Patent Description:
Due to the generally high locations of the engineering gantry cranes, it is easy to cause electrical equipment failure due to lightning strike, which affects the operation of the equipment. If the failure cannot be eliminated in time, it may even cause engineering problems, leading to more serious consequences. Therefore, the lightning protection of the gantry crane is very important, but the current lightning rod lightning protection method has poor protection effect on the electrical equipment of the gantry crane, especially for the induction lightning, the whole surface of the gantry crane can not be covered, and as a result, the protection effect is affected. <CIT> discloses a gantry crane according to the preamble of claim <NUM>.

Therefore, the technical problem to be solved by the present invention is to overcome the drawbacks that the lightning protection method of the gantry crane lightning rod in the prior art can not cover the surface of the gantry crane and affect the protection effect, so as to provide a gantry crane comprising a lightning protection device, a machine and a use method thereof.

In order to solve the above problem, the present invention provides a gantry crane comprising a lightning protection device, wherein the lightning protection device comprises a conductive structure comprising a conductive wire, and the gantry crane has a rail, including:.

Optionally, longitudinal rod connecting balls are arranged on the conductive longitudinal rods, and the conductive cross-rings are connected with cross-ring connecting circles which are arranged on the conductive longitudinal rods in a sleeving manner.

Optionally, ball diameters of the longitudinal rod connecting balls on the respective conductive longitudinal rods increase sequentially in a direction from the outer side to the guide sleeve, aperture diameters of the cross-ring connecting circles connected on the conductive cross-rings increase sequentially in a direction from the outer side to the guide sleeve, and the aperture diameters of the cross-ring connection circles are smaller than the ball diameters of the longitudinal rod connecting balls arranged in the same layer therewith, and in the lightning protection state, the conductive cross-rings in different layers are hung at positions of different heights on the conductive longitudinal rods.

Optionally, an insulating layer is arranged outside the insulating sleeve, and the insulating sleeve is embedded in the gantry crane.

Optionally, the upper part of the insulating sleeve is funnel-shaped, an inner inclined surface of the funnel-shaped upper part is provided with a connecting plate, an outer ring of the connecting plate is provided with conductive longitudinal rod sliding slot holes to guide and support the conductive longitudinal rods to slide in an extending direction or in a retracting direction, the conductive longitudinal rods pass in or out of the sliding slot holes when the rotatable rod rotates to drive an umbrella net to unfold or contract; an inner circumference of the connecting plate is provided with a support plate to support a control box and a power element, both the support plate and a load bearing plate are made of insulating material, so that a control cabinet, an accumulator and the power element inside the control box, and a casing of the control box are insulated from outside lightning and static electricity; an upper bearing is arranged in a central hole of the support plate and the control box is connected by a charging wire with an electrical control cabinet on a walking trolley of the gantry crane, and the accumulator is configured to be charged by the electrical control cabinet.

Optionally, a hoop is provided at the bottom of the rotatable rod, the hoop is rotatably connected with the rotatable rod by a bearing, the hoop is connected to an inner wall of the insulating sleeve by a bracket, the guide sleeve is arranged on the rotatable rod to move up and down between the connecting plate and the hoop by means of the movement of the rotatable rod.

Optionally, the power element is further included, the power element is connected with the rotatable rod, the power element is connected with the rotatable rod through a flexible coupling made of an insulating material, and the power element is supported on the support plate by a bracket.

A machine includes the above gantry crane comprising a lightning protection device, and the machine further includes walking wheels adapted to carry a gantry crane with an umbrella net structure to move on a rail, the upper surface of part of the rail being provided with an insulating cushion layer.

A use method of the gantry crane comprising a lightning protection device includes the steps of:.

Optionally, the use method includes the steps of:.

The technical solution according to the present invention has the following advantages:.

In order to illustrate more clearly the specific embodiments of the present invention or the technical solutions in the prior art, the drawings required for the detailed description or prior art description will now be briefly described, and it will be apparent that the drawings in the following description are some embodiments of the present invention, from which other drawings can be derived without inventive step for a person of ordinary skill in the art.

Description of the reference signs: <NUM>. gantry crane; <NUM>. rotating rod; <NUM>. guide sleeve; <NUM>. conductive upright rod; <NUM>. conductive cross-ring; <NUM>. hoop; <NUM>. flange; <NUM>. control box; <NUM>. accumulator; <NUM>. power element; <NUM>. umbrella net structure; <NUM>. connecting plate; <NUM>. insulating sleeve; <NUM>. conductive wire; <NUM>. grounding carbon rod; <NUM>. machine room; <NUM>. insulating layer; <NUM>. walking wheel; <NUM>. insulating cushion layer; <NUM>. rail; <NUM>. bearing; <NUM>. cross-ring connecting circle; <NUM>. upright rod connecting ball; <NUM>. sliding slot hole; <NUM>. support plate; <NUM>. upper bearing; <NUM>. charging wire; <NUM>. electrical control cabinet; <NUM>. load bearing plate; <NUM>. support rod; <NUM>. control cabinet.

The technical solutions of the present invention will now be clearly and fully described in conjunction with the accompanying drawings. Apparently, the embodiments described below are a part, but not all, of the embodiments of the present invention. Based on the embodiments of the invention, all other embodiments obtained by common technicians in the field on the premise of not making creative labor belong to the range of protection of the invention.

In the description of the invention, it should be noted that, the terms "center," "upper," "lower," "left," "right," "longitudinal," "horizontal," "inner," "outer," and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is merely for convenience of description of the invention and simplification of the description, it is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore cannot be construed as limiting the present invention. Moreover, the terms "first", "second", "third" are used for descriptive purposes only and cannot be construed to indicate or imply relative importance.

Throughout the description of the present invention, it should be noted that the terms "installed", "connected", and "connection" are to be broadly understood, for example, the connection can be fixed connection, removable connection, or integrated connection; the connection can be mechanical connection or electrical connection; the connection can be direct connection, or indirect connection through intermediate media, or the connection can be the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the invention can be understood in specific circumstances.

Furthermore, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The gantry crane lightning protection device provided by the present invention includes: a rotatable rod structure, including a rotatable rod <NUM>, wherein the rotatable rod <NUM> is fitted inside an insulating sleeve <NUM> at the top of a gantry crane <NUM>, and the rotatable rod <NUM> is of an externally threaded structure; an umbrella net structure <NUM>, including a guide sleeve <NUM> threadedly and rotatably connected with the rotatable rod <NUM>, wherein the guide sleeve <NUM> is arranged on an outer circumference of the rotatable rod <NUM>, at least three conductive longitudinal rods <NUM> are arranged at intervals in the circumferential direction of the guide sleeve <NUM>, and at least two conductive cross-rings <NUM> are arranged at intervals and around the conductive longitudinal rods <NUM>; the radii of the conductive cross-rings <NUM> are different from each other so that the working heights of positions of the conductive cross-rings <NUM> are also different from each other when the umbrella net structure <NUM> is unfolded; and a conductive structure, including a conductive wire <NUM> and a grounding carbon rod <NUM>, wherein one end of the conductive wire <NUM> is fixedly connected with a tail end of the rotatable rod <NUM>, the other end thereof is connected with the grounding carbon rod <NUM>, and in a lightning protection state, the conductive longitudinal rods <NUM> extend out of the insulating sleeve <NUM>, the conductive cross-rings <NUM> unfold along the circumferential direction of the conductive longitudinal rods <NUM> into an umbrella shape, and the conductive cross-rings <NUM> and the conductive longitudinal rods <NUM> together form an umbrella-shaped structure covering the upper part of the gantry crane <NUM>, so that the gantry crane <NUM> is shielded from lightning, wherein lightning is transmitted to the rotatable rod <NUM>, and then transmitted to the conductive wire <NUM> by the rotatable rod <NUM>, and finally transmitted to the ground through a rail <NUM> by the conductive wire <NUM> via the grounding carbon rod <NUM>.

In thunderstorm weather, the conductive longitudinal rods <NUM> extend out of the insulating sleeve <NUM>, and the conductive cross-rings <NUM> unfold the conductive longitudinal rods <NUM> outward along the circumferential direction so as to form an umbrella-shaped structure covering the upper part of the gantry crane <NUM> by the conductive cross-rings <NUM> and the conductive longitudinal rods <NUM>, so that lightning falling above or near the gantry crane <NUM> reaches the umbrella-shaped structure, and then is transmitted to the ground through the rail <NUM> by the conductive wire <NUM> via the grounding carbon rod <NUM>, thus solving the problem that the lightning rod cannot cover the gantry crane <NUM>. The lightning protection device is insulated from the structure of the gantry crane <NUM> and the lightning does not affect the gantry crane <NUM>, thus having a good protection effect on the gantry crane <NUM>.

A specific implementation of the gantry crane lightning protection device are shown in <FIG> the device includes: a rotatable rod structure provided with the rotatable rod <NUM>, an umbrella net structure <NUM> rotatably connected with the rotatable rod structure, a conductive structure fixedly connected with one end of the rotatable rod structure and a control structure configured to control rotation of the rotatable rod <NUM>.

As shown in <FIG>, the gantry crane lightning protection device is applicable not only to the gantry crane <NUM>, but also to various kinds of equipment and buildings, structures, devices and the like that require lightning protection. Correspondingly, lightning protection devices such as the rotatable rod structures can be arranged on corresponding structures at the top of the equipment and buildings, structures and devices requiring protection. For the case that the lightning protection device is arranged on the gantry crane <NUM>, the rotatable rod structure includes the rotatable rod <NUM> fitted inside the insulating sleeve <NUM> at the top machine room <NUM> of the gantry crane <NUM>. In order to facilitate the rotation of the rotatable rod <NUM> in a firm support condition, as shown in <FIG>, the rotatable rod and its matching structure are fixed by at least two points, namely, the upper part is supported by a connecting plate <NUM> and the lower part is supported by a hoop <NUM>. The upper support way by the connecting plate <NUM> is as follows: an inner circumference of the connecting plate <NUM> is embedded with a support plate <NUM> to support a control box <NUM> and a power element <NUM>, both the support plate <NUM> and a load bearing plate <NUM> are made of insulating material, so that a control cabinet <NUM>, the power element <NUM> and a casing are insulated from outside lightning and static electricity; the center of the support plate is of a hole structure, an upper bearing <NUM> is arranged in the hole as the upper support of the rotatable rod <NUM>, and the upper bearing <NUM> also cooperates with the rotation of the rotatable rod <NUM>. The lower support way by the hoop <NUM> is as follows: a hoop <NUM> is provided at the bottom of the insulating sleeve <NUM>, the hoop <NUM> is rotatably connected with the rotatable rod <NUM> by a bearing <NUM>, the hoop <NUM> is connected to an inner wall of the insulating sleeve <NUM> by a bracket. As the lower support of the rotatable rod <NUM>, the hoop <NUM> also cooperates with the rotation of the rotatable rod <NUM>. In order to facilitate the access of the umbrella net structure <NUM>, the upper part of the insulating sleeve <NUM> is tapered, and an inclined surface of the tapered upper part is provided with a connecting plate <NUM>. From the perspective of expanding the scope of application, fixed points can also be added according to the different structural characteristics of the gantry crane or other engineering equipment, which are within the scope of protection of this patent.

As shown in <FIG>, in order to facilitate the extension of the conductive cross-rings <NUM>, the umbrella net structure <NUM> includes the guide sleeve <NUM> rotatably connected with the rotatable rod <NUM>, the guide sleeve <NUM> is arranged on an outer circumference of the rotatable rod <NUM>, the guide sleeve <NUM> is threadedly connected with the rotatable rod <NUM>, the guide sleeve <NUM> is arranged on the rotatable rod <NUM> to move up and down between the connecting plate <NUM> and the hoop <NUM> by means of the movement of the rotatable rod <NUM>. A plurality of conductive longitudinal rods <NUM> are arranged at intervals in the circumferential direction of the guide sleeve <NUM>, each of the conductive longitudinal rods <NUM> has a curved radian so as to cover the appropriate area after expansion, and a plurality of conductive cross-rings <NUM> are movably arranged along the length direction of the conductive longitudinal rods <NUM>; the radii of the conductive cross-rings <NUM> are different from each other, and the farther away from the guide sleeve <NUM>, the larger the diameter. The heights of positions of the conductive cross-rings <NUM> are also different from each other when the umbrella net structure <NUM> is unfolded.

As shown in <FIG>, longitudinal rod connecting balls <NUM> are arranged on the conductive longitudinal rods <NUM>, and the conductive cross-rings <NUM> are movably connected with cross-ring connecting circles <NUM> which are all shaped as an inner-hole ring and are arranged on the conductive longitudinal rods <NUM> in a sleeving manner. Ball diameters of the longitudinal rod connecting balls <NUM> on the respective conductive longitudinal rods <NUM> increase sequentially in a direction from the outer side to the guide sleeve, aperture diameters of the cross-ring connecting circles <NUM> connected on the conductive cross-rings <NUM> increase sequentially in a direction from the outer side to the guide sleeve, and the aperture diameters of the cross-ring connection circles <NUM> are smaller than the ball diameters of the longitudinal rod connecting balls <NUM> arranged in the same layer therewith, in this way, when the lightning protection umbrella net is unfolded, the conductive cross-rings <NUM> in different layers are hung at positions of different heights on the conductive longitudinal rods <NUM> and extend reasonably layer-by-layer. In this manner, when the conductive longitudinal rods <NUM> extend, the longitudinal rod connecting balls <NUM> on the outer side can directly pass through the inner holes of the corresponding cross-ring connecting circles <NUM> due to the small diameters thereof to the cross-ring connecting circles <NUM> which are lightly smaller in diameter. When the longitudinal rod connecting ball <NUM> move, the corresponding conductive cross-rings <NUM> continue to extend outward.

In the lightning protection state, the conductive longitudinal rods <NUM> extend out of the insulating sleeve <NUM>, and the conductive cross-rings <NUM> are unfolded along the circumferential direction of the conductive longitudinal rods <NUM> into an umbrella shape so as to form an umbrella-shaped structure covering the upper part of the gantry crane <NUM> by the conductive cross-rings <NUM> and the conductive longitudinal rods <NUM>, so that the gantry crane <NUM> is shielded from lightning, lightning is transmitted to the rotatable rod <NUM>, and then transmitted to the conductive wire <NUM> by the rotatable rod <NUM>, and finally transmitted to the ground by the conductive wire <NUM> via the grounding carbon rod <NUM>.

As shown in <FIG>, the conductive structure includes the conductive wire <NUM> and the grounding carbon rod <NUM>, wherein, the conductive wire <NUM> is arranged along the frame of the gantry crane <NUM>, that is, one end of the conductive wire <NUM> is fixedly connected with the rotatable rod <NUM>, and the other end is connected with the grounding carbon rod <NUM> arranged at the bottom of the gantry crane <NUM>.

The upper part of the insulating sleeve <NUM> is funnel-shaped, an inner inclined surface of the funnel-shaped upper part is provided with a connecting plate <NUM>, an outer ring of the connecting plate <NUM> is provided with conductive longitudinal rod sliding slot holes <NUM> to guide and support the conductive longitudinal rods <NUM> to slide in an extending direction or in a retracting direction, the conductive longitudinal rods <NUM> pass in or out of the conductive longitudinal rod sliding slot holes <NUM> when the rotatable rod <NUM> rotates to drive an umbrella net to unfold or contract; an inner circumference of the connecting plate <NUM> is embedded with a support plate <NUM> to support a control box <NUM> and a power element <NUM>, both the support plate <NUM> and a load bearing plate <NUM> are made of insulating material, so that a control cabinet <NUM>, an accumulator <NUM> and the power element <NUM> inside the control box <NUM>, and a casing of the control box <NUM> are insulated from outside lightning and static electricity; the center of the support plate is of a hole structure, and an upper bearing <NUM> is arranged in the hole as the upper support of the rotatable rod <NUM>, and the upper bearing <NUM> also cooperates with the rotation of the rotatable rod <NUM>. This ensures that the umbrella net structure <NUM> is reliably fixed with the gantry crane <NUM> through the insulating sleeve <NUM> and the connecting plate <NUM>, and because there is no metal connection or contact between the insulating sleeve <NUM> and the gantry crane <NUM>, the overall insulation between the umbrella net structure <NUM> and the body of the gantry crane <NUM> is ensured, thus ensuring the operation reliability of the device.

As shown in <FIG>, the control structure is arranged on the top of the machine room <NUM>, and the control structure includes a control box <NUM>. A control cabinet <NUM>, an accumulator <NUM> and a power element <NUM> are arranged inside the control box <NUM> and are configured to control and provide power for the rotation of the rotatable rod <NUM>. The control cabinet <NUM>, the accumulator <NUM> and a load bearing plate <NUM> are made of insulating material. The control box <NUM> is connected by a charging wire <NUM> with an electrical control cabinet <NUM> on a walking trolley of the gantry crane, and the accumulator <NUM> is configured to be charged by the electrical control cabinet <NUM>. The control structure further includes the power element <NUM> connected with the rotatable rod <NUM>, the power element <NUM> is connected with the rotatable rod <NUM> through a flexible coupling made of an insulating material. Specifically, the power element <NUM> is any kind of motor. The power element <NUM> is supported on an insulating support plate <NUM> in the middle by a bracket in the form of a flange <NUM> or the like. The wireless control mode is preferred to avoid the electrical damage caused by lightning when the cable in the wired mode is struck by lightning.

It should be noted that a housing of the control structure is a protective cover made of metal conductive materials to prevent rain and dust. Inside the control structure, the load bearing plate <NUM> and the insulating support plate <NUM> of the control cabinet <NUM>, the accumulator <NUM> and power element <NUM> are all made of insulating plastic, insulating rubber, wood and other materials. When the housing of the control structure is subject to lightning or static electricity, because of the insulating effect of the support plate, the internal devices can be guaranteed to operate stably without being damaged by lightning or static electricity.

A machine includes the above gantry crane lightning protection device, and as shown in <FIG>, the machine further includes walking wheels <NUM> arranged under the gantry crane <NUM>, and the walking wheels <NUM> are adapted to carry the gantry crane <NUM> with the umbrella net structure <NUM> to move on a rail <NUM>, an appropriate area of the end of the rail <NUM> is provided with an insulating cushion layer <NUM>, so that the gantry crane <NUM> can run through the walking wheels <NUM> to the area with insulating cushion layer <NUM> to block a lightning conduction channel connecting the gantry crane <NUM>, the walking wheels <NUM>, the rail <NUM> and the ground, and prevent the lightning from damaging other electrical equipment through the lightning conduction channel. The walking wheels <NUM> are complementary to the umbrella net structure <NUM> to further strengthen the lightning protection effect.

In the specific implementation process, the specific use method is as follows:.

Lightning protection measures for the control system body and operators of this patent: <NUM>. The top control box <NUM> and the power element <NUM> of the device of the present invention are externally provided with a protective cover made of an integral metal conductive material, which play a role in preventing rain, moisture and dust for the internal devices. Inside the device, these devices such as the electric control cabinet <NUM>, the accumulator <NUM> and the power element <NUM> are provided with the support plate <NUM> and the load bearing plate <NUM> which are made of insulating materials such as insulating plastic, insulating rubber and wood, which are the same as those used in the protective cover. On the one hand, the internal devices are reliably fixed, and on the other hand, reliable connection with the guide sleeve <NUM> is realized so as to ensure the stable operation of the internal mechanism. The power element <NUM> and the rotatable rod <NUM> are not directly connected by a metal coupling, and an insulated flexible coupling made of nylon, plastic, rubber or the like is used for insulation. In this way, the control and power system of the device of the present invention can be physically isolated from the external parts that may be struck by lightning. Surge protectors are added inside the control box <NUM>, the electrical control cabinet <NUM> and the control cabinet <NUM> of the top control system of the present invention to further slow down surge impact and protect the safety of internal electrical devices when the insulating materials isolated from the outside fail. The opening and closing operation of the device of the present invention is operated by remote control, which ensures the safety of operators. A signal transceiver and control device is set in the control cabinet to ensure the normal realization of the function.

In an alternative embodiment, the umbrella shape may also be other shapes such as a circle.

In an alternative embodiment, the adjacent conductive longitudinal rods <NUM> have different curved radians.

The invention has the following advantages: (<NUM>) The patent is simple and feasible, easy to realize, good in economy, does not affect the normal operation of equipment, has strong universality, and is suitable for popularization; (<NUM>) The patent adopts multi-level lightning protection, has high reliability, plays a very good lightning protection effect, and ensures the safety of equipment.

The gantry crane lightning protection device provided in this application solves the following difficulties: (<NUM>) In order to avoid vibration damage during the daily operation of the equipment, the lightning protection device must adopt a telescopic mode, which realizes retraction protection in non-thunderstorm weather and unfolding lightning protection in thunderstorm weather; (<NUM>) The lightning protection device must be insulated from the whole gantry crane to avoid the damage of the gantry crane; (<NUM>) The control system of the lightning protection device adopts reliable internal lightning protection design to ensure the reliability of the control and action of the lightning protection device.

Claim 1:
A gantry crane comprising a lightning protection device, wherein the lightning protection device comprises a conductive structure comprising a conductive wire (<NUM>), and the gantry crane has a rail (<NUM>), characterized in that, the lightning protection device further comprises:
a rotatable rod structure, comprising a rotatable rod (<NUM>), wherein the rotatable rod (<NUM>) is fitted inside an insulating sleeve (<NUM>) at the top of the gantry crane (<NUM>);
an umbrella net structure (<NUM>), comprising a guide sleeve (<NUM>) threadedly and rotatably connected with the rotatable rod (<NUM>) in a sleeving manner, wherein the guide sleeve (<NUM>) is arranged on an outer circumference of the rotatable rod (<NUM>), at least three conductive longitudinal rods (<NUM>) are arranged at intervals in the circumferential direction of the guide sleeve (<NUM>), each of the conductive longitudinal rods (<NUM>) has a curved radian, and at least two conductive cross-rings (<NUM>) are arranged at intervals and around the conductive longitudinal rods (<NUM>); the radii of the conductive cross-rings (<NUM>) are different from each other so that the heights of positions of the conductive cross-rings (<NUM>) are also different from each other when the umbrella net structure (<NUM>) is unfolded; and
the conductive structure further comprises a grounding carbon rod (<NUM>), wherein one end of the conductive wire (<NUM>) is fixedly connected with a tail end of the rotatable rod (<NUM>), the other end thereof is connected with the grounding carbon rod (<NUM>), and in a lightning protection state, the conductive longitudinal rods (<NUM>) extend out of the insulating sleeve (<NUM>), the conductive cross-rings (<NUM>) unfold along the circumferential direction of the conductive longitudinal rods (<NUM>) into an umbrella shape, and the conductive cross-rings (<NUM>) and the conductive longitudinal rods (<NUM>) together form an umbrella-shaped structure covering the upper part of the gantry crane (<NUM>), so that the gantry crane (<NUM>) is shielded from lightning, wherein lightning is transmitted to the rotatable rod (<NUM>), and then transmitted to the conductive wire (<NUM>) by the rotatable rod (<NUM>), and finally transmitted to the ground through the rail (<NUM>) by the conductive wire (<NUM>) via the grounding carbon rod (<NUM>).