Patent Description:
The present disclosure relates to the technical field of vehicles, and in particular, to a chassis of an automated guided vehicle and an automated guided vehicle.

With the development of technology, automated guided vehicles (AGVs) are not only used in industrial production lines, but also in many logistics industries such as goods-to-person systems and line-side transfer where AGVs have been introduced in large quantities to achieve warehouse automation. Unlike in industrial production lines, the demand for AGVs in the field of warehousing and logistics is great, and the load of an AGV in use tends to be <NUM>-<NUM>, and the whole AGV is required to have the characteristics of a small size, light weight, fast speed, low cost, etc..

It should be noted that the information disclosed in the background section of the present disclosure is only intended to enhance understanding of the general background of the present disclosure, and should not be considered as an admission or any form of implication that the information constitutes related technology well known to those skilled in the art.

<CIT> discloses an automatic guide transport vehicle for improving ground adaptability.

<CIT> discloses a six-wheeled robot chassis.

<CIT> discloses an automated guided vehicle chassis structure capable of adapting to ground deformation.

According to an aspect of the present disclosure, a chassis of an automated guided vehicle is provided, including: a first mounting plate; a first wheel set mounted on the first mounting plate; a second mounting plate rotatably connected to the first mounting plate; a second wheel set mounted on the second mounting plate; a support frame; a first connecting rod rotatably connected to the support frame and the first mounting plate, respectively; and a second connecting rod fixedly connected to the support frame at one end thereof, and rotatably connected to the second mounting plate at the other end thereof; a connection assembly connected between the first mounting plate and the second mounting plate to enable the first mounting plate and the second mounting plate to rotate relative to each other; wherein the connection assembly comprises: a first connecting seat mounted on the first mounting plate; a second connecting seat mounted on the second mounting plate; a first connecting shaft configured to connect the first connecting seat and the second connecting seat to enable the first connecting seat and the second connecting seat to rotate relative to each other; the chassis of an automated guided vehicle further comprises the automated guided vehicle further includes a limiting assembly configured to limit an angle of the relative rotation between the first mounting plate and the second mounting plate, the limiting assembly including a limiting plate, which is connected to the first connecting seat and a surface of the limiting plate close to the first connecting seat includes a first mating part and a second mating part connected with the first mating part, the first mating part being in contact with an upper surface of the first connecting seat, the second mating part extending in a direction away from the first connecting seat and being inclined upward with respect to the first mating part.

In some embodiments, the chassis of an automated guided vehicle includes two first connecting rods and two second connecting rods, the support frame is rectangular; and the first connecting rods, the second connecting rods and the support frame are connected to form a cuboid support bracket.

In some embodiments, the limiting assembly further includes a limiting sleeve, which is mounted on the second connecting seat, the limiting plate being provided with a first hole, a diameter of the first hole being greater than an outer diameter of the limiting sleeve, the limiting sleeve passing through the first hole and moving relative to the limiting plate, the limiting sleeve being provided with a limiting part at an end away from the second connecting seat, the limiting part being configured to restrict the limiting sleeve from escaping from the first hole.

In some embodiments, the limiting part includes a boss extending radially outwardly of the limiting sleeve, and the diameter of the limiting part is greater than that of the first hole.

In some embodiments, the limiting assembly further includes a spacer sleeve, which is arranged between the limiting plate and the limiting part.

In some embodiments, the first wheel set includes a first universal wheel assembly and a drive wheel assembly, and the second wheel set includes a second universal wheel assembly.

In some embodiments, the first universal wheel assembly includes:.

In some embodiments, a connecting line between a rotation center of the first universal wheel and a rotation center of the second universal wheel is parallel to a rotation axis between the first mounting plate and the second mounting plate; and/or a connecting line between a rotation center of the third universal wheel and a rotation center of the fourth universal wheel is parallel to a rotation axis between the first mounting plate and the second mounting plate.

In some embodiments, the chassis of an automated guided vehicle includes two drive wheel assemblies, which are mounted on two sides of the first mounting plate, respectively, each of the two drive wheel assemblies including:.

According to another aspect of the present disclosure, an automated guided vehicle is provided, which includes the above-mentioned chassis of an automated guided vehicle.

Based on the above technical solution, the chassis in the embodiment of the present disclosure includes the first mounting plate and the second mounting plate that are rotatably connected to each other, so that when the road surface is uneven, by relative rotation of the first mounting plate and the second mounting plate, both the first wheel set and the second wheel set can touch the ground to ensure the steadiness of a vehicle body mounted on the chassis; furthermore, the chassis also includes the support frame, the first connecting rod and the second connecting rod, the first connecting rod being rotatably connected to the support frame and the first mounting plate, and the second connecting rod being fixedly connected to the support frame and rotatably connected to the second mounting plate, so when the first mounting plate and the second mounting plate rotate relative to each other, the first connecting rod and the second connecting rod also correspondingly rotate relative to the first mounting plate and the second mounting plate, and the first connecting rod and the second connecting rod can also provide the possibility of uniform distribution of the weight carried by the support frame, on the first mounting plate and the second mounting plate, to avoid dive or lift of the vehicle body, and further ensure the stability of the vehicle body.

Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

To more clearly describe technical solutions in the embodiments of the present disclosure or in the related art, a brief introduction to the drawings for use in description of the embodiments or the related art will be given below. Obviously, the drawings in the following description only illustrate some embodiments of the present disclosure, and other drawings may also be obtained by those of ordinary skill in the art based on the drawings provided herein without creative work.

The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In description of the present disclosure, it should be understood that orientation or position relations denoted by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are orientation or position relations illustrated based on the drawings, are merely for the convenience of describing the present disclosure and simplifying description, instead of indicating or implying the denoted devices or elements must have specific orientations or be constructed and operated in specific orientations, and thus the terms cannot be understood as limiting the protection scope of the present disclosure.

After research, the inventor found that chassis structures of automated guided vehicles in the related art mainly include the following two forms.

For an AGV wheel train of a fixed vehicle model, a positive pressure thereof is determined. According to the positive pressure relationship between a drive force F and µFn, the magnitude of the drive force not only depends on the power of a drive motor. With the same motor power, the magnitude of the positive pressure is also a key factor for acceleration and efficiency. For the chassis structure in this form, operational stability of a vehicle body can be maintained only by increasing the self-weight of the vehicle body or by increasing a friction coefficient µ. However, increasing the self-weight of the vehicle body causes an increase in power loss, and increasing the friction coefficient µ causes an increase in the maintenance cost of a logistics site.

(<NUM>) Drive wheels are fixed, and auxiliary wheels can adapt to the road surface.

As the drive wheels are fixed, and auxiliary wheels float, a positive pressure increases with the increase of a load of a vehicle body. However, a dive or lift phenomenon occurs during acceleration or deceleration, leading to low stability of a carrying platform of the vehicle, and this is more disadvantageous especially for transferring liquid-type goods.

Based on the above research, the inventor improved the structure of the automated guided vehicle. Referring to <FIG> and <FIG>, in some embodiments of a chassis of an automated guided vehicle provided in the present disclosure, the chassis includes a first mounting plate <NUM>, a first wheel set, a second mounting plate <NUM>, a second wheel set, a support frame <NUM>, a first connecting rod <NUM>, and a second connecting rod <NUM>, wherein the second mounting plate <NUM> is rotatably connected to the first mounting plate <NUM>; the first wheel set is mounted on the first mounting plate <NUM>; the second wheel set is mounted on the second mounting plate <NUM>; the first connecting rod <NUM> is rotatably connected to the support frame <NUM> and the first mounting plate <NUM>, respectively; and one end of the second connecting rod <NUM> are fixedly connected to the support frame <NUM>, and the other end of the second connecting rod <NUM> are rotatably connected to the second mounting plate <NUM>.

In the above embodiments, the chassis includes the first mounting plate <NUM> and the second mounting plate <NUM> that are rotatably connected to each other, so that when the road surface is uneven, by relative rotation of the first mounting plate <NUM> and the second mounting plate <NUM>, both the first wheel set and the second wheel set can touch the ground to ensure the steadiness of a vehicle body mounted on the chassis; furthermore, the chassis also includes the support frame <NUM>, the first connecting rod <NUM> and the second connecting rod <NUM>, the first connecting rod <NUM> being rotatably connected to the support frame <NUM> and the first mounting plate <NUM>, and the second connecting rod <NUM> being fixedly connected to the support frame <NUM> and rotatably connected to the second mounting plate <NUM>, so when the first mounting plate <NUM> and the second mounting plate <NUM> rotate relative to each other, the first connecting rod <NUM> and the second connecting rod <NUM> also correspondingly rotate relative to the first mounting plate <NUM> and the second mounting plate <NUM>, and the first connecting rod <NUM> and the second connecting rod <NUM> can also provide the possibility of uniform distribution of the weight carried by the support frame <NUM>, on the first mounting plate <NUM> and the second mounting plate <NUM>, to avoid dive or lift of the vehicle body, and further ensure the stability of the vehicle body.

Based on the chassis of an automated guided vehicle in the above embodiments, the present disclosure also proposes an automated guided vehicle, which includes the above-mentioned chassis of an automated guided vehicle. The positive technical effects of the embodiments of the chassis of the automated guided vehicle are also applicable to those of the automated guided vehicle and will not be repeated here.

Structures of some embodiments of a chassis of an automated guided vehicle provided in the present disclosure will be described below in conjunction with <FIG>.

As shown in <FIG>, in some embodiments, the chassis of an automated guided vehicle includes a first mounting plate <NUM>, a second mounting plate <NUM>, a drive wheel assembly <NUM>, a first universal wheel assembly <NUM>, a connection assembly <NUM>, a support body <NUM>, and a second universal wheel assembly <NUM>.

Two drive wheel assemblies <NUM> and the first universal wheel assembly <NUM> are mounted on the first mounting plate <NUM>, and thus can form a triangular support and can be brought into contact with the ground at the same time to achieve high stability. The second universal wheel assembly <NUM> is mounted on the second mounting plate <NUM>. The first mounting plate <NUM> and the second mounting plate <NUM> are rotatably connected to each other by two connection assemblies <NUM>. The support body <NUM> is mounted above the first mounting plate <NUM> and the second mounting plate <NUM> and across the first mounting plate <NUM> and the second mounting plate <NUM>.

In these embodiments, the first mounting plate <NUM> is provided on the front side of the automated guided vehicle, and the second mounting plate <NUM> is provided on the rear side of the automated guided vehicle. In other embodiments, the first mounting plate <NUM> and the second mounting plate <NUM> may also be provided on the left side and the right side of the automated guided vehicle, respectively, or arranged along an oblique direction.

As shown in <FIG>, when a raised road surface H is encountered, the second mounting plate <NUM> rotates counterclockwise with respect to the first mounting plate <NUM> at a rotating angle of θ to ensure that both the first wheel set and the second wheel set can touch the ground, and the support body <NUM> is slightly deformed to ensure the stability of the vehicle body and other components connected to the top of the support body <NUM> and achieve uniform load distribution on the support body <NUM>.

As shown in <FIG>, when a depressed road surface L is encountered, the second mounting plate <NUM> rotates clockwise with respect to the first mounting plate <NUM> at a rotating angle of θ to ensure that both the first wheel set and the second wheel set can touch the ground, and the support body <NUM> is slightly deformed to ensure the stability of the vehicle body and other components connected to the top of the support body <NUM> and achieve uniform load distribution on the support body <NUM>.

In some embodiments, as shown in <FIG>, the first mounting plate <NUM> is provided with five sets of mounting holes, and the second mounting plate <NUM> is provided with three sets of mounting holes, wherein first mounting holes <NUM> and fifth mounting holes <NUM> are configured to mount the connection assemblies <NUM>; second mounting holes <NUM> are configured to mount the drive wheel assemblies <NUM>; third mounting holes <NUM> and seventh mounting holes <NUM> are configured to mount the support body <NUM>; fourth mounting holes <NUM> are configured to mount the first universal wheel assembly <NUM>; and sixth mounting holes <NUM> are configured to mount the second universal wheel assembly <NUM>.

The first mounting plate <NUM> is provided with a concave portion and the second mounting plate <NUM> is provided with a convex portion, the convex portion being inserted into the concave portion to facilitate mounting and positioning of the first mounting plate <NUM> and the second mounting plate <NUM>.

On the left and right sides of the first mounting plate <NUM> are respectively provided holes recessed inward configured to expose drive wheels of the drive wheel assemblies <NUM> from a bottom surface of the first mounting plate <NUM>, and on the front side are also provided circular holes configured to expose universal wheels of the first universal wheel assembly <NUM> from the bottom surface of the first mounting plate <NUM>. The first mounting plate <NUM> is also provided with a square hole in the middle.

On the rear side of the second mounting plate <NUM> is provided a circular hole configured to expose universal wheels of the second universal wheel assembly <NUM> from a bottom surface of the second mounting plate <NUM>.

By providing the above-mentioned holes recessed inward and circular holes, main parts of the drive wheel assemblies <NUM>, the first universal wheel assembly <NUM> and the second universal wheel assembly <NUM> can all be mounted above the first mounting plate <NUM> and the second mounting plate <NUM>, with the drive wheels and the universal wheels being exposed from the bottom surfaces. Such configuration can effectively protect the main parts and facilitate assembly.

<FIG> show structural diagrams of the drive wheel assemblies <NUM>. The structures of the two drive wheel assemblies <NUM> may be the same or different.

In some embodiments, each of the two drive wheel assemblies <NUM> includes a drive wheel bracket <NUM>, a speed reducer <NUM>, a motor <NUM> and a drive wheel <NUM>, the drive wheel bracket <NUM> being fixedly mounted on the first mounting plate <NUM> by screws, the speed reducer <NUM> being mounted on the drive wheel bracket <NUM>, the motor <NUM> being connected to the speed reducer <NUM>, and the drive wheel <NUM> being in drive connection with an output shaft of the speed reducer <NUM>.

The speed reducer <NUM> may be a hypoid flange output reducer, and the speed reducer <NUM> is fixedly mounted on the drive wheel bracket <NUM> by a first screw <NUM>. The motor <NUM> is fixedly connected to the speed reducer <NUM> by a second bolt <NUM>. The drive wheel <NUM> may be a polyurethane covered wheel, and the drive wheel <NUM> is fixedly connected to an output flange end of the speed reducer <NUM> by a first bolt <NUM>. A dust cover <NUM> functions to seal the whole wheel train, and the dust cover <NUM> is connected to the drive wheel bracket <NUM> by a second screw <NUM>.

Power is transferred in such a manner that the motor <NUM> drives the speed reducer <NUM> to rotate, which in turn causes the drive wheel <NUM> to rotate.

<FIG> show structural diagrams of the first universal wheel assembly <NUM>. The second universal wheel assembly <NUM> may be of the same structure as the first universal wheel assembly <NUM>, or of a different structure from the first universal wheel assembly <NUM>.

In some embodiments, the first universal wheel assembly <NUM> includes a first mounting bracket <NUM>, a first universal wheel <NUM>, and a second universal wheel <NUM>, the first mounting bracket <NUM> being rotatably mounted on the first mounting plate <NUM>, the first universal wheel <NUM> being mounted at a first end of the first mounting bracket <NUM>, and the second universal wheel <NUM> being mounted at a second end of the first mounting bracket <NUM>.

The second universal wheel assembly <NUM> includes a second mounting bracket, a third universal wheel, and a fourth universal wheel, the second mounting bracket being rotatably mounted on the second mounting plate <NUM>, the third universal wheel being mounted at a first end of the second mounting bracket, and the fourth universal wheel being mounted at a second end of the second mounting bracket.

The first universal wheel assembly <NUM> and the second universal wheel assembly <NUM> are both configured with double wheels, which can increase the contact area with the ground and reduce the intensity of pressure on the ground.

The first universal wheel <NUM> and the second universal wheel <NUM> are connected to the first mounting bracket <NUM> by third bolts <NUM>, respectively, and the first mounting bracket <NUM> is rotatably connected to a third connecting seat <NUM> by a first articulated shaft <NUM>, and the first mounting bracket <NUM> can rotate about the first articulated shaft <NUM> so that at least one of the first universal wheel <NUM> and the second universal wheel <NUM> can contact the ground when the road surface is uneven. A first shaft clip <NUM> is configured to prevent the first articulated shaft <NUM> from falling off. The first articulated shaft <NUM> is a stepped shaft. A bottom surface of the third connecting seat <NUM> is fixedly connected to the first mounting plate <NUM> by a bolt.

In some embodiments, a connecting line between a rotation center of the first universal wheel <NUM> and a rotation center of the second universal wheel <NUM> is parallel to a rotation axis between the first mounting plate <NUM> and the second mounting plate <NUM>; and/or a connecting line between a rotation center of the third universal wheel and a rotation center of the fourth universal wheel is parallel to the rotation axis between the first mounting plate <NUM> and the second mounting plate <NUM>.

In some embodiments, the first mounting plate <NUM> is provided on the front side of the automated guided vehicle, and the second mounting plate <NUM> is provided on the rear side of the automated guided vehicle, and the rotation axis between the first mounting plate <NUM> and the second mounting plate <NUM> is transverse, and perpendicular to a traveling direction of the automated guided vehicle. The first universal wheel <NUM> and the second universal wheel <NUM> are arranged in the left-right direction, and the first mounting bracket <NUM> is parallel to the rotation axis, and a connecting line between a rotation center of the first universal wheel <NUM> and a rotation center of the second universal wheel <NUM> is also parallel to the rotation axis, both being perpendicular to the traveling direction of the automated guided vehicle. The advantage of this configuration is that the first mounting plate <NUM> and the second mounting plate <NUM> enables the vehicle body to resist the unevenness of the road surface in the front-rear direction, and the first universal wheel <NUM> and the second universal wheel <NUM> enables the vehicle body to resist the unevenness of the road surface in left-right direction, to ensure the stability of the vehicle body overall.

In other embodiments, it may also be configured such that the first universal wheel <NUM> and the second universal wheel <NUM> are arranged in the front-rear direction, and the first mounting plate <NUM> and the second mounting plate <NUM> are arranged in the left-right direction.

In other embodiments, the first universal wheel assembly and the second universal wheel assembly may each include one universal wheel.

<FIG> show structural diagrams of the connection assemblies <NUM>.

In some embodiments, the connection assemblies <NUM> are connected between the first mounting plate <NUM> and the second mounting plate <NUM> to enable the first mounting plate <NUM> and the second mounting plate <NUM> to rotate relative to each other.

Each connection assembly <NUM> includes a first connecting seat <NUM>, a second connecting seat <NUM> and a first connecting shaft, the first connecting seat <NUM> being mounted on the first mounting plate <NUM>, the second connecting seat <NUM> being mounted on the second mounting plate <NUM>, and the first connecting shaft being configured to connect the first connecting seat <NUM> and the second connecting seat <NUM> to enable the first connecting seat <NUM> and the second connecting seat <NUM> to rotate relative to each other.

The connection assembly <NUM> further includes a limiting assembly configured to limit an angle of the relative rotation between the first mounting plate <NUM> and the second mounting plate <NUM>. By providing the limiting assembly, a maximum angle of the relative rotation between the first mounting plate <NUM> and the second mounting plate <NUM> can be limited to prevent the vehicle body from shaking too much.

The limiting assembly includes a limiting plate <NUM>, the limiting plate <NUM> being connected to the first connecting seat <NUM> and a surface of the limiting plate <NUM> close to the first connecting seat <NUM> including a first mating part and a second mating part abutted with the first mating part, the first mating part being in contact with an upper surface of the first connecting seat <NUM>, the second mating part extending in a direction away from the first connecting seat <NUM> and being inclined upward with respect to the first mating part. An included angle between the first mating part and the second mating part is less than <NUM>°. Upper surfaces of the first connecting seat <NUM> and the second connecting seat <NUM> are parallel to each other.

The advantage of such configuration is that a certain distance may be formed between the second mating part and the plane where the upper surface of the first connecting seat <NUM> is located, and the distance gradually increases along a direction of approaching the second connecting seat <NUM>, so that the second mounting plate <NUM> connected to the second connecting seat <NUM> can rotate counterclockwise upward relative to the first mounting plate <NUM> and stop when the upper surface of the second connecting seat <NUM> is in contact with the second mating part.

In some embodiments, the limiting assembly further includes a limiting sleeve <NUM>, the limiting sleeve <NUM> being mounted on the second connecting seat <NUM>, the limiting plate <NUM> being provided with a first hole, a diameter of the first hole being greater than an outer diameter of the limiting sleeve <NUM>, the limiting sleeve <NUM> passing through the first hole and moving relative to the limiting plate <NUM>, the limiting sleeve <NUM> being provided with a limiting part at an end away from the second connecting seat <NUM>, the limiting part being configured to restrict the limiting sleeve <NUM> from escaping from the first hole. There is a movement space between the limiting part and the upper surface of the limiting plate <NUM> so that the limiting sleeve <NUM> and the second connecting seat <NUM> can rotate clockwise downward and stop when the limiting part is in contact with the upper surface of the limiting plate <NUM>.

In some embodiments, the limiting part includes a boss extending radially outwardly of the limiting sleeve <NUM>, and the diameter of the limiting part is greater than that of the first hole.

In some embodiments, the connection assembly <NUM> further includes a spacer sleeve <NUM>, the spacer sleeve <NUM> being arranged between the limiting plate <NUM> and the limiting part. The spacer sleeve <NUM> may be a rubber sleeve, such that the limiting part can squeeze the rubber sleeve and move downward; or a gap of a certain height may also be preset between the spacer sleeve <NUM> and the limiting part.

To facilitate the installation of the limiting sleeve <NUM>, the second connecting seat <NUM> is provided with a recess, into which the bottom of the limiting sleeve <NUM> is inserted, and the limiting sleeve <NUM> is provided with a through hole in the center, and a fifth bolt <NUM> passes through the limiting sleeve <NUM> and is connected to the second connecting seat <NUM> by means of threads to fix the limiting sleeve <NUM> to the second connecting seat <NUM>.

In some embodiments, the first connecting seat <NUM> and the second connecting seat <NUM> are connected in an articulated manner by a second articulated shaft <NUM>, and a second shaft clip <NUM> is configured to prevent the second articulated shaft <NUM> from falling off. The first connecting seat <NUM> is fixed on the first mounting plate <NUM> through the first mounting holes <NUM> and bolts. The second connecting seat <NUM> is fixed on the second mounting plate <NUM> through the fifth mounting holes <NUM> and bolts. The number of the connection assembly <NUM> is two to achieve articulated connection of the first mounting plate <NUM> and the second mounting plate <NUM>.

The limiting plate <NUM> is fixed to the upper end face of the first connecting seat <NUM> by two fourth bolts <NUM>. The second connecting seat <NUM> stops after rotating about the second articulated shaft <NUM> to a lower bottom surface of the limiting plate <NUM>.

In some embodiments, the limiting sleeve <NUM> is a hollow stepped shaft that runs through the first hole in the limiting plate <NUM> and is inserted into the recess in the second connecting seat <NUM>, and is fixedly connected to the second connecting seat <NUM> by the fifth bolt <NUM>, and a gasket <NUM> is provided between the fifth bolt <NUM> and the limiting sleeve <NUM>. This allows the second connecting seat <NUM> to stop after rotating about the second articulated shaft <NUM> to a position where a lower end face of a step of the limiting sleeve <NUM> abuts against the upper end face of the limiting plate <NUM>.

<FIG> show structural diagrams of the support body <NUM>.

In some embodiments, the support body <NUM> includes a support frame <NUM>, two first connecting rods <NUM> and two second connecting rods <NUM>, the support body <NUM> being in a cuboid shape, the support frame <NUM> being a rectangular planar frame, and the top of the support frame <NUM> being connected to the vehicle body or other components to carry the load.

In the case the ground is horizontal, the first connecting rods <NUM> are perpendicular to the plane where the support frame <NUM> is located and perpendicular to the first mounting plate <NUM>, the plane where the support frame <NUM> is located being parallel to the first mounting plate <NUM> and the second mounting plate <NUM>, and the second connecting rods <NUM> are perpendicular to the second mounting plate <NUM> and also perpendicular to the plane where the support frame <NUM> is located.

A rib plate <NUM> is provided between the second connecting rods <NUM> and the support frame <NUM>.

In some embodiments, the support body <NUM> further includes two first mounting seats <NUM> and two second mounting seats <NUM>, the two first mounting seats <NUM> being mounted on the first mounting plate <NUM> through the third mounting holes <NUM>, respectively, and the two second mounting seats <NUM> being mounted on the second mounting plate <NUM> through the seventh mounting hole <NUM>, respectively. The two first mounts <NUM> are rotatably connected to the first connecting rods <NUM> by third articulated shafts <NUM>, and third shaft clips <NUM> prevent the third articulated shafts <NUM> from falling off. The two second mounting seats <NUM> are rotatably connected to fourth mounting seats <NUM> provided at ends of the second connecting rods <NUM> by fifth articulated shafts <NUM>. The first connecting rods <NUM> are also rotatably connected to third mounting seats <NUM> provided on the support frame <NUM> by fourth articulated shafts <NUM>.

The top of the support frame <NUM> is provided with backing plates <NUM> for connection with the vehicle body or other components to bear the load.

In some embodiments, a connection body of the first mounting plate <NUM>, the second mounting plate <NUM>, the first connecting rods <NUM> and the support frame <NUM> and the second connecting rods <NUM> is connected in an articulated manner to form a four-link mechanism, such that when the ground is uneven, both the first wheel set and the second wheel set can be kept in contact with the ground through deformation of the four-link mechanism, thus ensuring the stability of the vehicle body.

From the description of multiple embodiments of the chassis of an automated guided vehicle and the automated guided vehicle of the present disclosure, it can be seen the embodiments of the chassis of an automated guided vehicle and the automated guided vehicle of the present disclosure have at least one or more of the following advantages:.

Claim 1:
A chassis of an automated guided vehicle, comprising:
a first mounting plate (<NUM>);
a first wheel set mounted on the first mounting plate (<NUM>);
a second mounting plate (<NUM>) rotatably connected to the first mounting plate (<NUM>);
a second wheel set mounted on the second mounting plate (<NUM>);
a support frame (<NUM>);
a first connecting rod (<NUM>) rotatably connected to the support frame (<NUM>) and the first mounting plate (<NUM>), respectively; and
a second connecting rod (<NUM>) fixedly connected to the support frame (<NUM>) at one end thereof, and rotatably connected to the second mounting plate (<NUM>) at the other end thereof;
wherein the chassis of an automated guided vehicle further comprises a connection assembly (<NUM>), the connection assembly (<NUM>) being connected between the first mounting plate (<NUM>) and the second mounting plate (<NUM>) to enable the first mounting plate (<NUM>) and the second mounting plate (<NUM>) to rotate relative to each other, wherein the connection assembly (<NUM>) comprises:
a first connecting seat (<NUM>) mounted on the first mounting plate (<NUM>);
a second connecting seat (<NUM>) mounted on the second mounting plate (<NUM>); and
a first connecting shaft configured to connect the first connecting seat (<NUM>) and the second connecting seat (<NUM>) to enable the first connecting seat (<NUM>) and the second connecting seat (<NUM>) to rotate relative to each other;
characterized in that
the chassis of an automated guided vehicle further comprises a limiting assembly configured to limit an angle of the relative rotation between the first mounting plate (<NUM>) and the second mounting plate (<NUM>), the limiting assembly comprising a limiting plate (<NUM>), the limiting plate (<NUM>) being connected to the first connecting seat (<NUM>) and a surface of the limiting plate (<NUM>) close to the first connecting seat (<NUM>) comprising a first mating part and a second mating part connected with the first mating part, the first mating part being in contact with an upper surface of the first connecting seat (<NUM>), the second mating part extending in a direction away from the first connecting seat (<NUM>) and being inclined upward with respect to the first mating part.