Patent Description:
Advanced Driver Assistant System, abbreviated as ADAS, uses a variety of sensors installed on a vehicle to collect environmental data inside and outside the vehicle at the first time to perform technical processing such as identification, detection and tracking of dynamic and static objects, so that a driver can be aware of possible dangers in a fastest time, in order to attract attention and improve safety and active safety technology.

At present, the sensors used in ADAS mainly include cameras, radars, lasers and ultrasonics, etc., which can detect light, heat, pressure or other variables used to detect the state of the vehicle, and are usually located inside of a front and rear bumpers, side mirrors and steering column, or on the windshield. During the use of the vehicle, vibration, collision, environmental temperature and humidity, etc. would change the physical installation status of the above-mentioned sensors, and therefore need to be adjusted or calibrated irregularly.

Since the irregular adjustment or calibration of the vehicle ADAS may be carried out indoors (performed in maintenance shop) or outdoors. However, the existing ADAS calibration devices occupy a large space and are inconvenient to carry due to their own structure. As a result, the related calibration operations of the ADAS calibration device cannot be performed outdoors or the operation is difficult, which waste time and energy. Therefore, how to design a portable ADAS calibration device has become an urgent problem to be solved.

A Patent Application <CIT> disclosed a vehicle calibration field discloses a calibration system and demarcation support thereof, and the demarcation support includes base, grudging post subassembly and beam assembly.

A Patent Application <CIT> disclosed a stand device in which its leg bodies can be prevented from causing obstruction and the entire of the stand device can be placed in a standing state without being thrown down sideways when the leg bodies are folded and in state unused.

A Patent Application <CIT> disclosed a portable, folding telescopic support that can be used to secure and position, inter alia, equipment belonging to a portable X-ray generator, an X-ray cassette or a portable X-ray detector, the support can be folded to a minimum volume, facilitating transport, and comprises simple means for securing and orienting a portable X-ray generator, an X-ray cassette or a portable X-ray detector.

One of objects of embodiments of the present disclosure is to provide a calibration device for a vehicle ADAS, in order to solve the technical problem that the calibration device occupy a large space.

In order to solve above-mentioned technical problem, an embodiment of the present disclosure adopts the technical scheme is:
providing a calibration device for a vehicle Advanced Driver Assistant System, comprising:.

The beneficial effect of the calibration device for the vehicle ADAS provided by the embodiment of the present disclosure is that the bearing arms of the foldable base can be turned over relative to the bearing seat and stays in the current position stably, the beams can also be turned from a horizontal direction to a vertical direction, and the bearing arms can be turned over relative to the beam, such that the calibration device for the vehicle ADAS can be folded when it is not in use, so that it occupies a small space and is convenient to carry, thereby facilitating its storage and transportation.

In order to explain the embodiments of the present disclosure more clearly, a brief introduction regarding the accompanying drawings that need to be used for describing the embodiments of the present disclosure or the prior art is given below; it is obvious that the accompanying drawings described as follows are only some embodiments of the present disclosure, for those skilled in the art, other drawings can also be obtained according to the current drawings on the premise of paying no creative labor.

In order to make the purpose, the technical solution and the advantages of the present disclosure be clearer and more understandable, the present disclosure will be further described in detail below with reference to accompanying figures and embodiments. It should be understood that the specific embodiments described herein are merely intended to illustrate but not to limit the present disclosure.

In order to illustrate the technical solutions provided by the present disclosure, detailed descriptions are given below in conjunction with specific drawings and embodiments.

As shown in <FIG>, a calibration device for a vehicle ADAS provided by an embodiment of the present disclosure will now be described. The calibration device includes foldable base <NUM>, a stand assembly <NUM>, a beam assembly <NUM>, a laser <NUM> and target plates <NUM>.

Among them, the foldable base <NUM> is configured to bear and realize the movement and location of the calibration device. The foldable base <NUM> includes a bearing seat <NUM> and a plurality of bearing arms <NUM> rotatably disposed onto the bearing seat <NUM>; the stand assembly <NUM> is installed on the foldable base <NUM> and configured to support the beam assembly <NUM> so as to realize the height adjustment of the beam assembly <NUM>. In a preferred situation, the bearing arms <NUM> are folded toward the stand assembly <NUM> relative to the bearing seat <NUM>; the beam assembly <NUM> is configured to mount the target plates <NUM> and laser <NUM>. The beam assembly <NUM> is arranged onto the top of the stand assembly <NUM>. The beam assembly <NUM> includes two foldable beams <NUM>. The beam <NUM> is also folded in a direction adjacent to the stand assembly <NUM>. The beams <NUM> and the bearing arms <NUM> are folded relative to a folding direction which taking the middle of the stand assembly <NUM> as reference point. The laser <NUM> is disposed on the beam assembly <NUM> and is located on the symmetry line of the two beams <NUM>. The laser <NUM> is configured to locate the position of the calibration device. As shown in <FIG> and <FIG>, in the present embodiment, when in a work situation, the foldable base <NUM> is folded; when out of work, the foldable base <NUM> is unfolded to reduce the space occupied by the foldable base <NUM> during storing. The beam assembly <NUM> is also be folded to reduce the beam assembly <NUM> occupying the space when storing, so as to facilitate the calibration device to be carried.

In the present embodiment, based on the above-mentioned embodiment <NUM>, the specific structure of the foldable base <NUM> is described in detail as shown in <FIG>.

Specifically, the foldable base <NUM> includes a bearing seat <NUM> and a plurality of bearing arms <NUM> rotatably arranged on the bearing seat <NUM>. There are three bearing arms <NUM> which are arranged at intervals of equal angles with the bearing seat <NUM> as the center. An end of each of the bearing arms <NUM> away from the bearing seat <NUM> is provided with a traveling wheel <NUM> a height adjusting member <NUM>. The traveling wheels <NUM> are configured to realize the movement of the calibration device for the vehicle ADAS during the positioning process, making it convenient to be adjusted. The height adjusting member <NUM> is configured to adjust the height of the foldable base <NUM> from the ground and the level of the foldable base <NUM>, so that the foldable base <NUM> is suitable for uneven ground and the ground having obstacles. In other embodiments, the bearing arms <NUM> are detachably installed on the bearing seat <NUM>. When the foldable base is stored, the bearing arms <NUM> can be detached from the bearing seat <NUM>, and then attached to the bearing seat <NUM> for placement.

Specifically, the stand assembly <NUM> is arranged at the center of the bearing seat <NUM> and extend vertically, which make the center of gravity of the calibration device for the vehicle ADAS being on the bearing seat <NUM>. The stability and levelness of foldable base <NUM> in an unfold situation can be ensured by the three bearing arms <NUM> because of the stability theorem of the triangle formed, it can ensure.

Specifically, as shown in <FIG> and <FIG>, the bearing arms <NUM> can be folded relative to the bearing seat <NUM> in a direction adjacent to the stand assembly <NUM>. Specifically, the extension direction of the bearing arm <NUM> can be reversed from the horizontal direction to the vertical direction, and a locking assembly <NUM> that limits the folding angle of the bearing arm <NUM> is provided at the rotational connection of each of the bearing arms <NUM> and the bearing seat <NUM>. The locking assembly <NUM> is configured to ensure the firmness of the bearing arm <NUM> in the unfolded and folded storage state. The bearing arms <NUM> are in an unfold situation when The bearing arms <NUM> extend horizontally, as the traveling wheels <NUM> are in touch with the ground to make the foldable base <NUM> bearing the load; while the bearing arms <NUM> are in a fold situation when The bearing arms <NUM> extend vertically, with a small storage space for the foldable base <NUM>, which is convenient for storage and transportation and makes it easy to carry. In order to explain in more detail, the horizontal direction refers to the left-right direction in the figures, and the vertical direction refers to the up-down direction in the figures.

As shown in <FIG>, the bearing seat <NUM> includes a bearing plate <NUM> and baffles <NUM> surrounding the bearing plate <NUM>. The baffles <NUM> are provided with three and are distributed in a triangle shape. The baffles <NUM> are curved plates and there is a gap between same ends of each two adjacent baffles <NUM>, and one end of each bearing arms <NUM> is arranged in the gap between the two baffles <NUM> through a first rotating shaft <NUM>.

As shown in <FIG>, the locking assembly <NUM> includes a first locking hole <NUM> and a second locking hole <NUM> arranging on the baffle <NUM>, and a locking member <NUM> arranging on the bearing arm <NUM>. When the locking member <NUM> is in the first locking hole, the bearing arm extends in the horizontal direction, and the bearing arm <NUM> is in the unfolded state; when the locking member <NUM> is in the second locking hole <NUM>, the bearing arm <NUM> extends in the vertical direction, and the bearing arm <NUM> is in the folded state.

Specifically, as shown in <FIG>, the first locking hole <NUM> is a first groove formed on the baffle <NUM>, the second locking hole <NUM> is a second groove formed on the baffle <NUM>, and a first opening of the first groove faces the horizontal direction, and a first opening of the second groove faces the vertical direction, and the locking member <NUM> is a locking rod that is slidably arranged on the bearing arm <NUM> and can be respectively engaged with the first groove and the second groove. When the locking rod is engaged in the first groove, the bearing arm <NUM> extends horizontally, and when the locking rod is engaged in the second groove, the bearing arm <NUM> extends vertically. The locking rod is slidingly set on the bearing arm <NUM>, to make the locking rod can be separated from the first groove or the second groove, so that the bearing arm <NUM> can rotate. In other embodiments, the first locking hole <NUM> and the second locking hole <NUM> are formed by the first through hole and the second through hole spaced apart from the first rotating shaft <NUM>, and the connection line between the first through hole and the first rotating shaft <NUM> is a horizontal line, while the connecting line between the second through hole and the first rotating shaft <NUM> is a vertical line. The locking member <NUM> is a bolt that can pass through the first through hole or the second through hole respectively. The bolt is configured to cooperate with the first rotating shaft <NUM> to limit the bearing arm <NUM> from rolling-over.

As shown in <FIG>, the bearing arms <NUM> are hollow columns, each of which can be a hollow square column or a hollow cylinder, the bearing arm <NUM> is provided with a sliding slot <NUM>, which is disposed on the side wall of the bearing arm <NUM>, a second rotating shaft <NUM> is slidably disposed in the sliding slot <NUM>, and the second rotating shaft <NUM> is provided with a sliding handle <NUM>, which the locking rod is installed on. The sliding handle <NUM> is slidable along a longitudinal direction of the sliding slot <NUM> under the action of external force to drive the locking rod engaged into or out of the first groove and second groove. The sliding handle <NUM> is L-shaped, the bottom wall of the bearing arm <NUM> is provided with a first slot, a part of the sliding handle <NUM> is inserted into the bearing arm <NUM> through the first slot and arranged on the second rotating shaft <NUM>, wherein a part of the locking rod is arranged on the sliding handle <NUM> and extends out of the bearing arm <NUM> through the sliding slot <NUM>, so that the part of the locking rod that extends out of the bearing arm <NUM> is engaged in the first groove or the second groove. The function of the sliding handle <NUM> is to facilitate the operation of the equipment user to drive the locking rod to move. In a preferred embodiment, the first groove and the second groove are both semi-circular grooves. In this case, the locking rod is a cylindrical rod with a circular cross section. In other embodiments, the first groove and the second groove are both polygonal, such as triangle grooves, square grooves, etc., correspondingly, the cross-sectional shape of the locking rod is a triangular prism rod or a square rod that matches the first groove and the second groove.

As shown in <FIG>, the locking assembly <NUM> also includes an elastic reset member <NUM>. In a natural state, the elastic reset member <NUM> drives the locking rod to be engaged into the first groove or the second groove. The purpose of setting the elastic reset member <NUM> is to ensure the continuous engaging of the locking rod in the first groove or the second groove, and to ensure the stability of the engaging effect of the locking rod.

Specifically, as shown in <FIG>, the elastic reset member <NUM> is a tension spring, one end of the tension spring is sleeved on the first rotating shaft <NUM>, the other end of the tension spring is sleeved on the locking rod, and the tension spring is located inside the bearing arm <NUM>. The tension spring is in a stretched state in a natural state and pulls the locking rod to move in the direction of being locked into the first groove or the second groove. Of course, one end of the tension spring can also be connected to the baffle <NUM>, and the other end of the tension spring can be connected to the second rotating shaft <NUM> or sliding handle <NUM>. The number of tension springs can be set to two or more, as long as it can ensure that the locking rod does not detach from the first groove or the second groove without being subjected to external force, that is, during normal transportation or movement, the received vibration force will not cause the locking rod to detach from the first groove or the second groove.

In other embodiments, the elastic reset member <NUM> is a spring, one end of the spring is disposed on the bearing arm <NUM>, and the other end of the spring abuts on the locking rod. The spring is in a compressed state in a natural state and drives the locking rod to move in the direction of being locked into the first groove or the second groove. Alternatively, one end of the spring is fixed on the bearing arm <NUM>, and the other end abuts on the second rotating shaft <NUM>. Among them, the natural state means that after the locking rod is engaged in the first groove or the second groove, the tension spring is still in a stretched state, and the spring is still in a compressed state, so as to continuously provide tension or elasticity to ensure the stability of the locking rod being engaged to the first groove or the second groove.

As shown in <FIG>, the edge of the baffle <NUM> between the first groove and the second groove is an arc-shaped edge. The arc-shaped edge is convenient for the locking rod to slide from the first groove along the arc-shaped edge to the second groove for the user save energy.

In the present embodiment, on the basis of the foregoing embodiment <NUM> and embodiment <NUM>, as shown in <FIG>, the specific structures of the traveling wheels <NUM> and the height adjusting member <NUM> are described in detail.

As shown in <FIG>, the height adjusting member <NUM> is a knob screw, which is screwed to the bearing arm <NUM>. One end of the knob screw is rotatably disposed on the traveling wheel <NUM>, and the other end is the operating end. The bearing arm <NUM> can be controlled to lift by rotating the knob screw, thereby adjusting the height between the bearing arm <NUM> and the ground, so that the foldable base <NUM> can overcome higher obstacles.

As shown in <FIG>, in the present embodiment, the traveling wheels <NUM> are brake-type universal wheels, which make the position of the foldable base <NUM> convenient and stable. Among them, the knob screw and the brake-type universal wheels are rotatably connected by a bearing <NUM>, and the rotation axis of the rotating screw is coincide with the brake-type universal wheel.

As shown in <FIG>, the traveling wheel <NUM> includes a mounting frame <NUM> and a rotating wheel <NUM>. Among them, the rotating wheel <NUM> is mounted on the mounting frame <NUM> to rotate through a sixth rotating shaft <NUM>. In a preferred embodiment, the rotating wheel <NUM> is a TPR (Thermo-Plastic-Rubber material, thermoplastic rubber) wheel, which can increase the friction between the wheel <NUM> and the ground to ensure the stability of the mobile positioning base at the current position. In other embodiments, the rotating wheel <NUM> can be a polyurethane wheel, a plastic wheel, a nylon wheel or a steel wheel.

As shown in <FIG>, the mounting frame <NUM> includes two parallel plates <NUM> arranged at intervals and a connecting plate <NUM> connecting the two parallel plates <NUM>. The mounting frame <NUM> has a U-shaped structure as a whole, and the rotating wheel <NUM> is rotatably arranged between two parallel plates <NUM> through the sixth rotating shaft <NUM>, such that the traveling wheels <NUM> have the advantages of easy production and installation.

As shown in <FIG>, the connecting plate <NUM> is provided with a through hole <NUM>, and the height adjusting member <NUM> includes a screw <NUM> and a knob handle <NUM>. The screw <NUM> and the bearing arm <NUM> are threadedly connected, and the knob handle <NUM> is arranged at the operating end of the screw <NUM>. The end of the screw <NUM> away from the knob handle <NUM> is provided with a first nut <NUM> with an outer diameter greater than the diameter of the through hole <NUM>, and the connecting plate <NUM> is provided with a bearing <NUM>, and the bearing <NUM> and the first nut <NUM> are respectively located on both sides of the connecting plate <NUM>, the end of the screw <NUM> away from the first nut <NUM> passes through the through hole <NUM> and the bearing 74successively, and is threadedly connected to the bearing arm <NUM>, and then the knob handle <NUM> is installed, so that the first nut <NUM> and the bearing <NUM> are located on the two sides of the connecting plate <NUM>, the screw <NUM> passes through the through hole <NUM> and is rotatably connected to the mounting frame <NUM> through the bearing <NUM>. Among then, the first nut <NUM> is configured to prevent the screw <NUM> from separating from the mounting frame <NUM>, and the bearing <NUM> is configured to connect the screw <NUM> and the mounting frame <NUM> rotatably, so that the traveling wheel <NUM> can rotate freely around the axis of the height adjustment assembly.

Specifically, the bearing <NUM> is a ball bearing, and the ball bearing includes an inner ring and an outer ring that can rotate relative to each other. Among then, the outer ring of the bearing <NUM> is fixed on the connecting plate <NUM> through a limiting block <NUM>. The limiting block <NUM> is provided with limiting teeth on the side which close to the connecting plate <NUM>. The limiting teeth abut against the connecting plate <NUM>, and the limiting teeth are configured to limit the relative position change of the limiting block <NUM> and the connecting plate <NUM>, so that the outer ring of the bearing <NUM> and the connecting plate <NUM> are fixed together, which can help the inner ring of the bearing <NUM> rotate relative to the connecting plate <NUM>.

Specifically, a nut <NUM> is screwed on the screw <NUM>, and the nut <NUM> abuts on the inner ring of the bearing <NUM> so that both the screw <NUM> and the inner ring rotate synchronously with respect to the outer ring. The screw <NUM> realizes the synchronous rotation of the screw <NUM> and the inner ring through the friction between the nut <NUM> and the inner ring, and is configured to space the bearing arm <NUM> and the outer ring of the bearing <NUM> to ensure that the inner ring can rotate. The use of the nut <NUM> enables the installation between the screw <NUM> and the inner ring to have the advantages of adjustable position and convenient installation.

As shown in <FIG>, the traveling wheel <NUM> also includes a brake pad <NUM> rotatably arranged on the mounting frame <NUM> by a seventh rotating shaft <NUM> and a pedal <NUM> rotatably arranged on the mounting frame <NUM> rotated by an eighth rotating shaft <NUM>, the brake pad <NUM> and the pedal <NUM> are both arranged between two parallel plates <NUM>. The brake pad <NUM> is located above the top of the rotating wheel <NUM>. The pedal <NUM> drives the brake pad <NUM> and the rotating wheel <NUM> to abut or separate when subjected to external force. The pedal <NUM> is convenient for the user to apply force. The seventh rotating shaft <NUM> and the eighth rotating shaft <NUM> are both damped and arranged on two parallel plates <NUM>, so that the brake pads <NUM> and the pedal <NUM> are damped and connected to the mounting frame <NUM>, in this way, the stability of the brake pad <NUM> being parked at the current position is ensured, thereby ensuring that the brake pad <NUM> can restrict the rotating wheel <NUM> from rolling.

As shown in <FIG> and <FIG>, a gradienter <NUM> is provided on the beam assembly <NUM>. The gradienter <NUM> is configured to determine the level of the laser <NUM> on the beam assembly <NUM>, and the level adjustment of the gradienter <NUM> is realized by the height adjusting member <NUM>.

In the present embodiment, based on the embodiments <NUM>-<NUM>, as shown in <FIG>, the specific structure of the stand assembly <NUM> is described in detail.

As shown in <FIG>, <FIG> and <FIG>, the stand assembly <NUM> includes: a fixing seat <NUM>, an outer column <NUM>, an inner column <NUM>, a limiting ring <NUM>, a transmission member <NUM>, and a drive member <NUM>.

Among them, the fixing seat <NUM> is fixed at the center of the bearing seat <NUM> by screws, and one end of the outer column <NUM> is fixed on the fixing seat <NUM> by screws. The outer column <NUM> is firstly inserted into the fixing seat <NUM> and then is fixed together using screws from the side surface of the outer column <NUM>.

Among them, the outer column <NUM> is a hollow column, the inner portion of the outer column <NUM> has a channel with the same cross section as that of the inner column <NUM>, the inner column <NUM> is movably inserted into the outer column <NUM>, and there is a gap between the inner wall of the outer column <NUM> and the outer wall of the inner column <NUM>, and the gap is configured to reduce the contact area between the outer column <NUM> and the inner column <NUM>, thereby reducing the friction force when the inner column <NUM> is lifted relative to the outer column <NUM>, which is convenient and labor-saving.

The beam assembly <NUM> and the laser <NUM> are installed at the end of the inner column <NUM> away from the fixing seat <NUM>. Specifically, a mounting plate <NUM> for installing the beam assembly <NUM> and the laser <NUM> is fixed in the inner column <NUM>. The laser <NUM> and inner column <NUM> are located on the same axis, so as to ensure accurate positioning of the laser <NUM>.

Among them, the limiting ring <NUM> is arranged at the end of the outer column <NUM> away from the fixing seat <NUM>, the limiting ring <NUM> is provided with a first engagement portion <NUM>, the inner column <NUM> is provided with a second engagement portion <NUM>, and the first engagement portion <NUM> and the second engagement portion <NUM> are engaged, such that the second engagement portion <NUM> can only slide back and forth along the longitudinal direction of the outer column <NUM> relative to the first engagement portion <NUM>, so that the inner column <NUM> can move up and down relative to the outer column <NUM>; the first engagement portion <NUM> and the second engagement portion <NUM> are configured for limiting the relative rotation of outer column <NUM> and inner column <NUM> to ensure the precise position of the laser <NUM> installed onto inner column <NUM>. The laser <NUM> is configured to position the center axis of the vehicle to determine the relative position between the target plate <NUM> on the beam assembly <NUM> and the vehicle.

Among them, the transmission member <NUM> is arranged on the inner column <NUM> and the transmission member <NUM> is flush with the outer surface of the inner column <NUM> or recessed on the outer surface of the inner column <NUM>, so as to ensure that the transmission member <NUM> will not abut with the inner wall of the outer column <NUM> to ensure that the friction between inner column <NUM> and outer column <NUM> will not be increased. The drive member <NUM> is disposed on the outer column <NUM> and connected to the transmission member <NUM>. The drive member <NUM> drives the inner column <NUM> to lift by driving the transmission member <NUM> to lift. The drive member <NUM> can be controlled manually, or the drive member <NUM> can be controlled electrically, such as by the motor plus gear, to drive the transmission member <NUM> to lift. Alternatively, the inner column <NUM> is provided with a screw, the bottom of the screw is provided with a screw motor, and the screw motor is installed on the bearing seat <NUM>, the inner column <NUM> is lifted by a lead screw disposed onto the screw. In order to be suitable for more environments such as no power supply environment, the drive member <NUM> of the present embodiment adopts a manual control method.

In the present disclosure, the outer column <NUM> is an outer cylinder, and the inner column <NUM> is an inner cylinder. In other embodiments, the outer column <NUM> and the inner column <NUM> are both regular polygons with the same cross-sectional shape, such as triangles, rectangles, rhombuses, squares, regular hexagons, etc. For example, the outer column <NUM> and inner column <NUM> are replaced by square columns, in this case, the limiting ring <NUM> can be omitted. That is, the stand assembly <NUM> includes a fixing seat <NUM>, an outer square column, an inner square column, a transmission member <NUM> and a drive member <NUM>. The inner square column is tightly inserted into the outer square column. The inner square column and the outer square column can prevent the inner square column from rotating. The cross-sections of the inner and outer square columns are not limited to squares, but can also be triangles, pentagons, hexagons, ellipses or arcs combined with straight lines and polygons, as long as the inner square column cannot rotate relative to the outer square column being guaranteed.

In the present embodiment, the inner column <NUM> is inserted in the outer column <NUM> and spaced from the outer column <NUM>, which reduces the contact area, thereby reducing the friction force, so that the lifting of the inner column <NUM> is labor-saved, and the outer column <NUM> and the inner column <NUM> pass through the first engagement portion <NUM> and the second engagement portion <NUM> are limited to prevent relative rotation between the outer column <NUM> and the inner column <NUM>, and ensure the position accuracy of the inner column <NUM>. The lifting of the inner column <NUM> is realized by the cooperation of the transmission member <NUM> and the drive member <NUM>, which only needs one person to operate, and making the lifting of inner column <NUM> has the advantages of simple operation, good stability, high precision and time saving.

As shown in <FIG>, <FIG> and <FIG>, since the outer column <NUM> and the inner column <NUM> are both cylinders, the limiting ring <NUM> is an annular ring structure, and the first engagement portion <NUM> is a protrusion radially protruding from the limiting ring <NUM> and the second engagement portion <NUM> is a groove provided on the inner column <NUM> and slidably engaged with the protrusion. The length direction of the groove is the same as that of the inner column <NUM>. In the present embodiment, the friction between the inner column <NUM> and the outer column <NUM> only comes from the friction between the protrusion and the side walls of the groove, and the contact area is relatively smaller, which can save effort. Two protrusions and two grooves are symmetrically arranged, and the transmission member <NUM> is arranged in the middle of the arcs of the two grooves.

As shown in <FIG>, <FIG> and <FIG>, one end of the outer column <NUM> away from the fixing seat is provided with a notch <NUM> for the protrusion inserting into the outer column <NUM>. The limiting ring <NUM> is fixed on the outer column <NUM> by fasteners such as screws. The notch <NUM> is communicated to an end surface of outer column <NUM>. The protrusion is engaged into the notch <NUM> during installation, so that the limiting ring <NUM> is attached to the outer column <NUM>, then using screws to fix the limiting ring <NUM> and outer column <NUM> to make the limiting ring <NUM> is easy to disassemble and assemble.

As shown in <FIG>, <FIG> and <FIG>, the inner column <NUM> is provided with a receiving groove <NUM>, and the transmission member <NUM> is fixed in the receiving groove <NUM> by a fastener such as a screw, so that the transmission member <NUM> is detachable and does not protrude an outer surface of inner column <NUM>. In a preferred embodiment, the transmission member <NUM> is a straight rack, and in other embodiments, the transmission member <NUM> is a helical rack.

As shown in <FIG>, <FIG> and <FIG>, one end surface of the inner column <NUM> inserted into the outer column <NUM> is provided with a plurality of limiting rods <NUM>, the plurality of limiting rods <NUM> are spaced apart in an equi-arc, and an end surface of each of the limiting rods <NUM> is in contact with the inner wall of the outer column <NUM>, the function of the limiting rod <NUM> is to ensure that the axis of the inner column <NUM> coincides with the axis of the outer column <NUM>, thereby ensuring the position accuracy of the laser <NUM> onto the inner column <NUM>. In the present embodiment, some of the limiting rods <NUM> abut against the corresponding protrusions to stop the inner column <NUM> from lifting when the limiting rods <NUM> are lifted to the limiting ring <NUM> along with the inner column <NUM>. At this time, the limiting rods <NUM> can also prevent inner column <NUM> from rising and detaching from outer column <NUM>, and ensure the stability of the insertion of the inner column <NUM> into the outer column <NUM>. In the present embodiment, the limiting rods <NUM> may be arranged in multiple turns along the axis of the inner column <NUM> at intervals.

As shown in <FIG>, <FIG> and <FIG>, the limiting rods <NUM> are screws, so that the height of the limiting rods <NUM> protruding from the outer surface of the inner column <NUM> can be adjusted so as to be suitable for the difference width of the gap between the inner column <NUM> and the outer column <NUM>. In addition, the surface of the limiting cap of the screw in contact with the inner wall of the outer column <NUM> is an arc-shaped surface, and its arc-shaped surface fits the arc of the inner wall of the outer column <NUM>, thus ensuring the fitting stability between the limiting rods <NUM> and the inner wall of the outer column <NUM>. The limiting cap can be the nut itself of the screw, or a hemispherical protrusion provided on the nut of the screw, that is, the arc-shaped surface can be obtained by setting the nut of the screw into a hemispherical shape or setting a hemispherical protrusion onto the nut of the screw.

As shown in <FIG>, <FIG> and <FIG>, the drive member <NUM> includes: a box body <NUM> fixed on the outer column <NUM>, a third rotating shaft <NUM> and a fourth rotating shaft <NUM> rotatably provided in the box body <NUM>, a turbine <NUM> and a first transmission wheel <NUM> disposed on the third rotating shaft <NUM>, a second transmission wheel <NUM> meshed with the first transmission wheel <NUM> and a driving wheel <NUM> meshed with the transmission member <NUM> that are disposed on the fourth rotating shaft <NUM>, a worm <NUM> rotatably disposed on the box body <NUM> and in self-locking meshed with a turbine <NUM>, and an operating handle <NUM> arranged outside the box body <NUM> and configured to drive the worm <NUM> to rotate. The outer column <NUM> is provided with a second slot <NUM> configured for a part of the driving wheel <NUM> extending into the outer column <NUM> and meshing with the transmission member <NUM>, that is, the driving wheel <NUM> is a spur gear and meshes with a spur rack for transmission. Of course, the driving wheel <NUM> can also be a helical gear, and the transmission member <NUM> is a helical rack. When adjusting the lifting of the inner column <NUM>, the user drives the worm <NUM> to rotate by the operating handle <NUM>, the worm <NUM> drives the turbine <NUM> to rotate, so that the third rotating shaft <NUM> rotates, and the third rotating shaft <NUM> rotates to drive the first transmission wheel <NUM> to rotate, and the first transmission wheel <NUM> rotates to drive the second transmission wheel <NUM> to rotate, and when the second transmission wheel <NUM> rotates, it drives the fourth rotating shaft <NUM> to rotate, and the fourth rotating shaft <NUM> rotates to drive the driving wheel <NUM> to rotate, and the driving wheel <NUM> rotates to drive the transmission member <NUM> to lift, so as to realize the lifting of the inner column <NUM>. Among them, the turbine <NUM> and the worm <NUM> have a self-locking function, which makes the inner column <NUM> stable at the current position. The first transmission wheel <NUM> and the second transmission wheel <NUM> have a good transmission function. The diameter of the first transmission wheel <NUM> is larger than the diameter of the second transmission wheel, which has a higher transmission ratio, saves effort. In other embodiments, the transmission mode of the transmission member <NUM> and the drive member <NUM> can also be connected by a conventional mechanical transmission mode such as chain transmission, screw transmission, worm gear transmission and the like.

As shown in <FIG>, <FIG> and <FIG>, the box body <NUM> includes: a semicircular plate <NUM> fixed on the outer column <NUM> and half-enclosing the outer column <NUM>; two side plates <NUM> fixedly connected to the arc-shaped ends of the semicircular plate <NUM>; a top plate <NUM>, a bottom plate <NUM>, a front plate <NUM> and a rear plate <NUM> fixedly connected to the two side plates <NUM> respectively; the front plate <NUM> and the rear plate <NUM> are configured to rotatably install the worm <NUM>, and the two side plates <NUM> are configured to rotatably install the third rotating shafts <NUM> and the fourth rotating shaft <NUM>, the rear plate <NUM> is provided with a second opening <NUM> corresponding to the second slot <NUM>, the second opening <NUM> and the second slot <NUM> are used to facilitate the engagement of the driving wheel <NUM> with the transmission member <NUM>. In the present embodiment, the outer column <NUM> passes through the box body <NUM>, and the semicircular plate <NUM> facilitates the installation of the side plates <NUM>. The third rotating shaft <NUM>, the fourth rotating shaft <NUM> and the worm <NUM> are all arranged to rotate through a bearing seat. The first transmission wheel <NUM>, the second transmission wheel <NUM>, the turbine <NUM> and the worm <NUM> are all arranged in the box body <NUM> to improve safety. In the present embodiment, each plate of the box body <NUM> is fixed by screws.

In the present disclosure, the top plate is further provided with a handle <NUM> configured for supporting the user with one hand, so that the user can apply force to the operating handle <NUM>, and can prevent the stand assembly <NUM> from shaking.

As shown in <FIG> and <FIG>, in the present embodiment, the target plates <NUM> includes a small target plate and a large target plate, and the target plates <NUM> are installed through the beam assembly <NUM>.

Embodiment <NUM>: In the present embodiment, on the basis of the foregoing embodiments <NUM>-<NUM>, as shown in figrues <NUM> to <NUM>, the specific structure of the beam assembly <NUM> is described in detail.

As shown in <FIG>, <FIG>, <FIG>, and <FIG>, the beam assembly <NUM> is arranged on the top of the stand assembly <NUM>. The beam assembly <NUM> includes: a mounting seat <NUM>, a beam <NUM>, a fixing block <NUM>, and a supporting rod <NUM>. Among them, the mounting seat <NUM> is fixed on the top of the stand assembly <NUM>, specifically, a mounting plate <NUM> is provided on the top of the inner column <NUM>, and the mounting seat <NUM> is installed on the mounting plate <NUM>. The gradienter <NUM> is installed on the mounting seat <NUM>. At least two beams <NUM> are provided, and each beam <NUM> can be folded toward the direction adjacent to the stand assembly <NUM>. Specifically, the extending direction of the beam <NUM> can be folded from the horizontal direction to the vertical direction, and can also be unfolded from the vertical direction to the horizontal direction. In the present embodiment, the beam <NUM> is folded down, and the bearing arm <NUM> is unfolded up, so that the beam <NUM> and the bearing arm <NUM> are adjacent to the outer periphery of the stand assembly <NUM>, thereby reducing the overall storage size of the calibration device for the vehicle ADAS and making it easy to carry. The laser <NUM> is arranged on the beam assembly <NUM> and is located on the symmetry line of the two beams <NUM>. At the same time, the laser <NUM> is also located on the extension line of the stand assembly <NUM> to facilitate the positioning of the laser <NUM>.

In the present embodiment, the bearing arm <NUM> of the foldable base <NUM> can be unfolded relative to the bearing seat <NUM> and stay at the current position stably, the beam <NUM> can also be unfolded from the horizontal direction to the vertical direction, and the bearing arm <NUM> and the beam <NUM> are unfolded relatively, so that when the calibration device for the vehicle ADAS is out of work, it occupy a smaller space and is convenient to carry, thereby facilitating the transportation and storage of the calibration device for the vehicle ADAS.

As shown in <FIG>, <FIG> and <FIG>, there are two beams <NUM>, and the two beams <NUM> are symmetrically arranged on both sides of the mounting seat <NUM>, and the two beams <NUM> form straight line with the mounting seat <NUM> when unfolded. Each of the beams is provided with at least one fixing block <NUM>, the fixing block <NUM> is slidably disposed on the beam <NUM>, and each fixing block <NUM> can be configured to fix a small target plate individually. The beam <NUM> is provided with scale line for positioning the position of the fixing block <NUM>, the scale line is used to conveniently determine the distance between the fixing block <NUM> and the laser <NUM>, so as to facilitate the adjustment of the distance between the target plate <NUM> and the laser <NUM>. The supporting rod <NUM> is arranged on the mounting seat <NUM>, the length direction of the supporting rod <NUM> is perpendicular to the length direction of the beam <NUM>, and the supporting rod <NUM> is located on the symmetry line of the two beams <NUM>, that is, the length direction of the supporting rod <NUM> the same as that of the stand assembly <NUM>. Since the supporting rod <NUM> is arranged on the mounting seat <NUM> and the mounting seat <NUM> is arranged on the stand assembly <NUM>, such that the length directions of the supporting rod <NUM> and the stand assembly <NUM> are overlapped, so that the supporting rod <NUM> will not interfere the sliding of the fixing block <NUM>, therefore, the supporting rod <NUM> does not need to be disassembled.

When a large target plate is installed, the supporting rod <NUM> is configured to hold the lower edge of the large target plate, and the two fixing blocks <NUM> are used to clamp the two sides of the large target plate to complete the fixing of the large target plate. In the present embodiment, since the supporting rod <NUM> is a fixed structure, such that the supporting rod <NUM> has good stability and accuracy when holding the large target plate. The beam assembly <NUM> of the present embodiment can install target plates <NUM> of various sizes, without other redundant workload, and the operation is simple.

As shown in <FIG>, in the present embodiment, one end of the supporting rod <NUM> is fixed on the mounting seat <NUM>, the supporting rod <NUM> is fixed in the middle of the lower bottom of the mounting seat <NUM> by screws, and the other end of the supporting rod <NUM> is provided with a cross rod <NUM> whose length direction is perpendicular to that of the supporting rod <NUM>, the cross rod <NUM> is parallel to the beam <NUM>, so that the connecting line between the cross rod <NUM> and the two fixing blocks <NUM> is parallel. The cross rod <NUM> is provided with at least two supporting members <NUM> spaced apart and configured to hold the lower edge of the large target plate. The supporting member is provided at least two, which is configured to ensure that the large target plate is placed on the two supporting members <NUM> in a horizontal state, thereby ensuring the accuracy of positioning of the large target plate.

In the present embodiment, the supporting member <NUM> is provided with a limiting groove for supporting the lower edge of the large target plate, and the limiting groove is configured to fix the position of the large target plate. In the present embodiment, the supporting member <NUM> is arranged on the cross rod <NUM> by screws, so that the supporting member <NUM> can be detachably installed, so that the supporting member <NUM> with different limiting grooves can be replaced to be suitable for large target plates of different thicknesses.

In the present embodiment, the length of the cross rod <NUM> is less than the length of the mounting seat <NUM>. As shown in <FIG>, when the calibration device for the vehicle ADAS is stored, the cross rod <NUM> does not occupy additional space, so that the calibration device for the vehicle ADAS occupies a smaller space when it is stored.

As shown in <FIG> and <FIG>, one end of the beam <NUM> is rotatably disposed on the mounting seat <NUM> through the fifth rotating shaft <NUM>, and the fifth shaft <NUM> can be a bolt. The beam <NUM> is provided with a first connection member <NUM> and the mounting seat <NUM>, the mounting seat <NUM> is provided with a second connection member <NUM>, and two beams <NUM> form in a horizontal straight line, that is, the beam <NUM> is in a unfolded state when the first connection member <NUM> and the second connection member <NUM> are connected. The two beams <NUM> can be bent down and fit the stand assembly <NUM>, that is, the beam <NUM> is in the folded storage state when the first connection member <NUM> is not connected with the second connection member <NUM>, as shown in <FIG>, so that the calibration device for the vehicle ADAS occupies a smaller space when it is stored, and easy to be carried. The first connection member <NUM> is a fixed hook, and the second connection member <NUM> is a rotating hook. In other embodiments, the beam <NUM> and the mounting seat <NUM> can also be restricted from rotating by means of bolts or latches.

As shown in <FIG> and <FIG>, the fixing block <NUM> is provided with a tightening screw <NUM>, and the tightening screw <NUM> and the fixing block <NUM> are threadedly connected and can be abutted or separated from the beam <NUM>. In a preferred embodiment, the beam <NUM> is provided with a guide rail, and the fixing block <NUM> is slidably arranged on the beam <NUM> through the guide rail. The position of the fixing block <NUM> on the guide rail is fixed when the tightening screw <NUM> abuts the beam <NUM>; and the fixing block <NUM> can slide on the beam <NUM> along the length direction of the guide rail when the tightening screw <NUM> separates from the beam <NUM>. The position of the fixing block <NUM> is slidable, so that it is convenient for fixing a target plate <NUM> of different sizes. The fixing block <NUM> is provided with an indicator arrow, which is used to indicate the scale line, which is convenient for determining the position of the fixing block <NUM> on the beam <NUM>. In other embodiments, the beam <NUM> is provided with a sliding groove, and the fixing block <NUM> is convexly provided with a protrusion that is slidably fitted into the sliding groove. The cross section of the sliding groove is in the shape of "<IMG>", and the cross section of the fixing block <NUM> and the protrusion is in the shape of "<IMG>", this can ensure that the fixing block <NUM> slides stably on the beam <NUM>. Or, the beam <NUM> is provided with a groove, and a guide rod is arranged in the groove, and the fixing block <NUM> partially extends into the groove and is sleeved on the guide rod, so as to realize a stable sliding connection of the fixing block <NUM> on the beam <NUM>. Of course, the sliding method of the fixing block <NUM> on the beam <NUM> can also adopt other methods such as screw drive, as long as the fixing block <NUM> can be stably slid on the beam <NUM>.

As shown in <FIG> and <FIG>, a side surface of the fixing block <NUM> is provided with a third slot <NUM>, and the third slot <NUM> is configured for the side edge of the large target plate being inserted into. Two fixing blocks <NUM> can clamp the edges of both sides of the large target plate, thereby preventing the large target plate from shaking left and right.

As shown in <FIG> and <FIG>, a rear side of the small target plate is provided with a first connection hole, and a side surface of the fixing block 33configured for mounting the small target plate is concavely provide with a first magnet <NUM> configured for attracting the small target plate, and a first connection member <NUM> configured for connecting with the first connection hole. The first connection member <NUM> is firstly connected to the first connection hole on the small target plate, then the first magnet attracts the small target plate such that the small target plate and the side surface of the fixing block <NUM> are fit firmly, so as to ensure the firmness of installation of the small target plate. The fixing block <NUM> is provided with a counter bore, and the first magnet <NUM> is fixed in the counter bore by a screw. Among them, the rear side of the small target plate can be provided with a rear plate <NUM> to be described below, and the first connection hole is provided on the rear plate <NUM>. At this time, the first connection hole has the same structure as the second connection hole <NUM> to be described below.

Specifically, the first connection member <NUM> is a T-shaped member with a T-shaped vertical section, the first connection hole is a limiting connection hole that is connected to the first connection member <NUM>, and the small target plate is provided with a receiving groove communicated with the limiting connection hole, and the cross-sectional area of the receiving groove is larger than the cross-sectional area of the limiting connection hole. After the T-shaped member and the limiting connection hole are connected, the small target plate cannot be pulled out directly, so as to ensure the firmness of installation of the small target plate.

As shown in <FIG>, the T-shaped member is preferably a screw, and the limiting connection hole is preferably a gourd hole. The screw includes a second nut <NUM>, a smooth section <NUM> and a threaded section <NUM> that are connected in sequence. The threaded section <NUM> is configured for threadedly connecting the fixing block <NUM> to facilitate the disassembly and assembly of the screw. The length of the smooth section <NUM> is approximately the same as the depth of the limiting connection hole, and the smooth section <NUM> is configured to carry the small target plate. An outer diameter of the second nut <NUM> is smaller than a diameter of a large hole of the limiting connection hole and greater than a small hole of the limiting connection hole, and the second nut <NUM> passes through the large hole of the limiting connection hole and is fixed in the receiving groove during installation, and then the small target plate is pressed down so that the small hole of the limit connection hole and the smooth section <NUM> are engaged. At this time, the second nut <NUM> can restrict the small target plate from separating from the fixing block <NUM>, ensuring the stability of the small target plate being installed on the fixing block <NUM>. The screw is provided with two to prevent the small target plate from shaking left and right, since the structure of the first connection hole and the second connection hole <NUM> to be described below are the same, the specific structure of the first connection hole can refer to the following description of the second connection hole <NUM>.

In the present embodiment, on the basis of the foregoing embodiments <NUM>-<NUM>, as shown in <FIG>, the installation method of the laser <NUM> and the mounting seat <NUM> is described in detail.

As shown in <FIG>, <FIG>, <FIG>, in the present embodiment, the laser <NUM> is arranged on the mounting seat <NUM> by a rotatable plate <NUM> and a hinge <NUM>. The rotatable plate <NUM> can be turned upwards by <NUM>° such that the laser <NUM> is recessed on a side surface of the mounting seat <NUM> adjacent to the target plate <NUM>, so that the laser <NUM> does not need to be disassembled and will not interfere with the installation of the large target plate.

Specifically, the rotatable plate <NUM> is first arranged on the mounting seat <NUM> through the hinge <NUM>, and the laser <NUM> is detachably mounted on the rotatable plate <NUM>. Wherein, the side surface of the mounting seat <NUM> is substantially flush with the side surface of the stand assembly <NUM>, or recessed in the side surface of the stand assembly <NUM> to ensure that the mounting seat <NUM> will not affect the installation of the large target plate, the side surface of the stand assembly <NUM> refers to the side surface close to the target plate <NUM>. After the laser <NUM> is installed on the mounting seat <NUM> through the rotatable plate <NUM>, the laser <NUM> will protrude from the side surface of the mounting seat <NUM>. After the rotatable plate <NUM> is turned upward by <NUM>°, based on the same side surface, the side surface of the mounting plate <NUM> facing away from the laser <NUM> is flush with the side surface of the mounting seat <NUM>, or the side surface of the mounting plate <NUM> facing away from the laser <NUM> is recessed inside the side surface of the mounting seat <NUM>. In this way, after the laser <NUM> is turned upward by <NUM>°, it will not interfere with the installation of the large target plate, that is, the large target plate can be installed without disassembling the laser <NUM>, which saves time and effort and has a protective effect on the laser <NUM>, which effectively prevents the accident such as loss or damage to the laser <NUM> from occurring. In addition, the operation of the turning process is relatively simple, which saves the time for calibration of the calibration device for the vehicle ADAS.

Specifically, as shown in <FIG>, <FIG>, the top of the mounting seat <NUM> is provided with a first mounting hole, the top surface of the mounting plate <NUM> is provided with a second mounting hole, the hinge <NUM> is fixed to the first mounting hole and the second mounting hole by screws, and the rotatable plate <NUM> are arranged on the mounting seat <NUM> by the hinge <NUM>. The hinge <NUM> includes two blades rotatably connected. One blade fits on the top of the mounting seat <NUM> through the screws and the first mounting hole, and the other blade fits on the top surface of the mounting plate <NUM> through the screw and the second mounting hole. The screw is provided with four, which are configured to ensure the firmness of installation of the hinge <NUM>.

In the present embodiment, the hinge <NUM> is a damping hinge, that is, after the laser <NUM> is installed on the rotatable plate <NUM>, and then rotatably arranged on the mounting seat <NUM> by the damping hinge. In this way, the rotatable plate <NUM> needs to be rotated under the action of external force. Thereby ensuring the stability of the position of the laser <NUM> and ensuring the accuracy of the laser <NUM> during detection.

As shown in <FIG>, a rear plate <NUM> is provided on the laser <NUM>, and the laser <NUM> and the rear plate <NUM> are connected by screws. The rear plate <NUM> and the rotatable plate <NUM> are detachably connected. Specifically, the rear plate <NUM> is provided with a second connection hole <NUM>, and the rotatable plate <NUM> is provided with a second connection member <NUM> configured to connect with the second connection hole <NUM>. The laser <NUM> is detachably connected to the rotatable plate <NUM> by the second connection member <NUM> of the rotatable plate <NUM> being connected to the second connection hole <NUM> of the rear plate <NUM>, thereby the installation and disassembly of the laser <NUM> is convenient.

As shown in <FIG>, the side of the rotatable plate <NUM> adjacent to the rear plate <NUM> is provided with a counter bore <NUM>, and the counter bore <NUM> is provided with a second magnet <NUM> that attracts the rear plate <NUM>. The second magnet <NUM> is fixed in the counter bore <NUM> by screws, and the counter bore <NUM> is configured to ensure that the surface of the rotatable plate <NUM> is flat, so as to prevent the second magnet <NUM> from affecting the installation of the rear plate <NUM>. In the present embodiment, the rotatable plate <NUM> and the rear plate <NUM> are made of steel materials, so that the second magnet <NUM> in the rotatable plate <NUM> can attract the rear plate <NUM> to further ensure firmness of the attachment between the rear plate <NUM> and the rotatable plate <NUM>.

As shown in <FIG>, the second connection hole <NUM> and the above first connection hole have the same structure, the second connection member <NUM> and the first connection member <NUM> are also T-shaped members having a T-shaped vertical section, the T-shaped member includes a connection rod and a limiting cap, and the T-shaped member is preferably a screw. That is, the connection rod is equivalent to the smooth section and the threaded section of the screw, the limiting cap is equivalent to the nut of the screw, and the specific structure of the screw has been described in the above embodiment <NUM>, and the description is not repeated herein.

As shown in <FIG>, in the present embodiment, the second connection hole <NUM> includes a receiving groove <NUM> opened on the rear plate <NUM> and a limiting connection hole <NUM> communicated with the receiving groove <NUM>, a cross-sectional area of the receiving groove <NUM> is greater than that of the limiting connection hole <NUM>, and the limiting connection hole <NUM> is arranged adjacent to the rotatable plate <NUM>. The receiving groove <NUM> is configured for receiving the limiting cap. The limiting connection hole <NUM> is preferably a gourd hole. That is, the limiting connection hole <NUM> includes a large round hole and a small round hole that communicate with each other. The limiting cap can be fixed in the receiving groove through the limiting connection hole <NUM>. Specifically, when the second connection member <NUM> is a screw, the diameter of the nut is smaller than that of the large round hole and greater than that of the small round hole, so that the nut can be inserted into the receiving groove <NUM> through the large round hole, and then the smooth section of the screw is engaged with the small round hole to prevent the nut from detaching from the small round hole, which ensures the connection stability of the second connection member <NUM> and the second connection hole <NUM>.

As shown in <FIG>, an escape groove <NUM> is provided on the top of the mounting seat <NUM>, and the unfolded hinge <NUM> can be received in the escape groove <NUM>. In this way, after turning over, the rotatable plate <NUM> and the laser <NUM> can be placed horizontally on the top of the mounting seat <NUM> to ensure the stability of the laser <NUM> after turning over on the top of the mounting seat <NUM>. Specifically, the top shape of the mounting seat <NUM> can be set to match the top shape of the laser <NUM>, which is beneficial to protect the laser <NUM>.

In the present embodiment, on the basis of the foregoing embodiments <NUM>-<NUM>, the use method and state of the calibration device for the vehicle ADAS are described in detail.

As shown in <FIG>, the calibration device is in an unfolded state, at this time, the calibration device can be used for calibration. As shown in <FIG>, the vehicle ADAS calibration device is in a folded storage state, at this time, the entire calibration device occupies a smaller space and is convenient to carry.

When the calibration device is required to perform the calibration work, the bearing arms <NUM> of the folding base are forced to be in the unfolded state and the beam <NUM> in the unfolded state, as shown in <FIG>.

According to the calibration requirements, a small target plate is installed, as shown in <FIG>, or a large target plate is installed, as shown in <FIG>. Before installing the large target plate, you need to position the calibration device, and turn over the laser <NUM><NUM>° by the rotatable plate <NUM>, so that the laser <NUM> does not affect the installation of the large target plate.

According to the calibration requirements, the position adjustment and positioning of the calibration device are realized through the brake-type universal wheels, so that the laser <NUM> is aligned with axis of the vehicle. In the process of position adjustment, the height adjusting member <NUM> is used to enable the calibration device to overcome obstacles and adjust the levelness of the calibration device. The levelness is determined by observing the gradienter <NUM>.

Claim 1:
A calibration device for a vehicle Advanced Driver Assistant System, comprising:
a foldable base (<NUM>), comprising a bearing seat (<NUM>) and a plurality of bearing arms (<NUM>) rotatably arranged on the bearing seat (<NUM>);
a stand assembly (<NUM>), disposed on the bearing seat (<NUM>), wherein the bearing arms (<NUM>) are able to be folded relative to the bearing seat (<NUM>) in a direction approaching the stand assembly (<NUM>);
a beam assembly (<NUM>), disposed on a top of the stand assembly (<NUM>) and comprising two foldable beams (<NUM>); and
characterized in that an end of the bearing arm (<NUM>) away from the bearing seat (<NUM>) is provided with a traveling wheel (<NUM>) and a height adjusting member (<NUM>), and the height adjusting member (<NUM>) being a knob screw, the traveling wheel (<NUM>) being a brake-type universal wheel, the knob screw is threadedly connected with the bearing arm (<NUM>) and an end of the knob screw is rotatably disposed onto the brake-type universal wheel, and the other end of the knob screw is provided with a knob handle.