Rail-crossing chassis and automatic guided vehicle

Abstract

The utility model relates to the technical field of automatic guided vehicles, and provides a rail-crossing chassis and an automatic guided vehicle, the rail-crossing chassis comprises a chassis body, walking wheels and auxiliary wheels, the walking wheels are arranged on the chassis body, and the walking wheels comprise a first walking wheel and a second walking wheel which are distributed in the longitudinal direction of the chassis body; the auxiliary wheels are arranged on the chassis body, the auxiliary wheels and the walking wheels are located on the same side of the chassis body, the axes of the auxiliary wheels are arranged in the transverse direction of the chassis body, the longitudinal direction of the chassis body is perpendicular to the transverse direction of the chassis body, and the maximum distance between treads of the auxiliary wheels and the chassis body is a first distance. The maximum distance between the tread of the walking wheel and the chassis body is a second distance, the first distance is smaller than the second distance, and the distance between the axis of the auxiliary wheel and the axis of the walking wheel is larger than the width of the target groove in the longitudinal direction of the chassis body. By means of the arrangement, the automatic guided vehicle with the rail-crossing chassis can automatically cross a groove in the side of a rail, and the trafficability is improved.

Description

Technical Field

[0001] This utility model relates to the field of automated guided vehicles (AGVs), and provides a track-crossing chassis and an AGV. Background Technology

[0002] In bogie manufacturing plants, numerous tracks are typically laid out on the floor to facilitate the movement of wheelset and bogie assemblies within the plant. These tracks are accompanied by grooves, approximately 70 millimeters wide. If Automated Guided Vehicles (AGVs) are deployed within the plant, their wheels will get stuck in the grooves when they need to cross the tracks, hindering automated material flow. These grooves are designed to fit the wheel flanges; filling them would compromise the mobility of the wheelsets and bogies.

[0003] The horizontal and vertical crisscrossing tracks inside the factory almost completely surround the work area, and the horizontal and vertical crisscrossing trenches also almost cover the work area. The operation of the automated guided vehicles cannot avoid these trenches at all.

[0004] Therefore, how to enable automated guided vehicles to automatically cross the ditches on the side of the track is an important issue that the industry urgently needs to address. Utility Model Content

[0005] This utility model provides a track-crossing chassis and an automated guided vehicle (AGV) to enable the AAV to automatically cross the grooves on the side of the track, thereby improving the AAV's passability.

[0006] This utility model provides a rail-crossing chassis, comprising:

[0007] Chassis body;

[0008] The chassis body has a set of wheels for traveling, including a first wheel and a second wheel that are distributed longitudinally along the chassis body.

[0009] An auxiliary wheel is disposed on the chassis body. The auxiliary wheel and the traveling wheel are located on the same side of the chassis body. The axis of the auxiliary wheel is arranged along the transverse direction of the chassis body. The longitudinal direction of the chassis body is perpendicular to the transverse direction of the chassis body. The maximum distance between the tread of the auxiliary wheel and the chassis body is a first distance. The maximum distance between the tread of the traveling wheel and the chassis body is a second distance. The first distance is less than the second distance. Along the longitudinal direction of the chassis body, the distance between the axis of the auxiliary wheel and the axis of the traveling wheel is greater than the width of the target groove.

[0010] According to the rail-crossing chassis provided by this utility model, the auxiliary wheels include:

[0011] A first auxiliary wheel, corresponding to the first traveling wheel, wherein the distance between the axis of the first auxiliary wheel and the axis of the first traveling wheel is greater than the width of the target groove;

[0012] The second auxiliary wheel corresponds to the second traveling wheel, and the distance between the axis of the second auxiliary wheel and the axis of the second traveling wheel is greater than the depth of the target trench.

[0013] According to the present invention, in a track-crossing chassis, the first auxiliary wheel is disposed on the side of the first traveling wheel away from the second traveling wheel;

[0014] The second auxiliary wheel is located on the side of the second traveling wheel closer to the first traveling wheel, or the second auxiliary wheel is located on the side of the second traveling wheel farther away from the first traveling wheel.

[0015] According to the overpass chassis provided by this utility model, the first auxiliary wheel is disposed on the side of the first traveling wheel close to the second traveling wheel;

[0016] The second auxiliary wheel is located on the side of the second traveling wheel closer to the first traveling wheel, or the second auxiliary wheel is located on the side of the second traveling wheel farther away from the first traveling wheel.

[0017] According to the present invention, a rail-crossing chassis is provided, wherein at least two first auxiliary wheels are provided, and each first auxiliary wheel is distributed at a lateral interval along the chassis body;

[0018] And / or, at least two second auxiliary wheels are provided, with each second auxiliary wheel distributed laterally at intervals along the chassis body.

[0019] According to the present invention, the tread of the auxiliary wheel along the lateral direction of the chassis body is larger than the tread of the traveling wheel along the lateral direction of the chassis body.

[0020] According to the rail-crossing chassis provided by this utility model, the auxiliary wheels include:

[0021] The auxiliary wheel body is rotatably mounted on the chassis body.

[0022] A drive unit is disposed on the chassis body, and the drive unit is adapted to drive the auxiliary wheel body to rotate relative to the chassis body.

[0023] According to the rail-crossing chassis provided by this utility model, it also includes:

[0024] A trench detection mechanism is installed on the chassis body, and the trench detection mechanism is adapted to detect the road conditions in front of the chassis body;

[0025] The control mechanism is electrically connected to both the drive unit and the trench detection mechanism. The control mechanism is adapted to control the start and stop of the drive unit according to the road conditions ahead of the chassis body.

[0026] According to the present invention, a rail-crossing chassis is provided on the chassis body, and the multiple mounting positions are distributed at intervals along the longitudinal direction of the chassis body. The auxiliary wheel is adapted to be installed in any one of the mounting positions.

[0027] Along the longitudinal direction of the chassis body, the distances between each mounting position and the axis of the traveling wheel are different and all are greater than the width of the target groove.

[0028] This utility model also provides an automated guided vehicle, including the aforementioned track-crossing chassis.

[0029] This utility model provides a track-crossing chassis, comprising a chassis body, traveling wheels, and auxiliary wheels. Both the traveling wheels and auxiliary wheels are mounted on the chassis body and located on the same side of the chassis body. The traveling wheels include a first traveling wheel and a second traveling wheel, distributed longitudinally along the chassis body. The axis of the auxiliary wheel is arranged transversely along the chassis body, with the longitudinal direction of the chassis body perpendicular to its transverse direction. The maximum distance between the tread of the auxiliary wheel and the chassis body is a first distance, and the maximum distance between the tread of the traveling wheel and the chassis body is a second distance; the first distance is less than the second distance. When both the first and second traveling wheels are on a flat surface, they support the chassis body. Rotation of the first and second traveling wheels relative to the chassis body can displace the chassis body. Along the longitudinal direction of the chassis body, the distance between the axis of the auxiliary wheel and the axis of the traveling wheel is greater than the width of the target trench. As the track-crossing chassis travels until the first traveling wheel gradually enters the target trench, both the second traveling wheel and the auxiliary wheel are on a flat surface. As the height of one end of the chassis body corresponding to the target groove gradually decreases, the auxiliary wheel gradually approaches and contacts the flat road surface, and the second traveling wheel and the auxiliary wheel support the chassis body. The rotation of the second traveling wheel and the auxiliary wheel relative to the chassis body can cause the chassis body to shift, thereby driving the first traveling wheel to cross the target groove. Similarly, when the overpass chassis travels to the point where the second traveling wheel gradually enters the target groove, the first traveling wheel and the auxiliary wheel can also drive the second traveling wheel to cross the target groove. With this configuration, the automated guided vehicle equipped with the overpass chassis provided by this utility model can automatically cross the grooves on the side of the track, improving its passability.

[0030] Furthermore, the automated guided vehicle provided by this utility model, having the track-crossing chassis described above, also possesses the various advantages described above. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram showing the distribution of the traveling wheels and auxiliary wheels of the track-crossing chassis provided by this utility model on the chassis body.

[0033] Figure 2 This is a front view of the track-crossing chassis provided by this utility model.

[0034] Figure 3 This is a schematic diagram showing the relative positions of the tread of the first traveling wheel and the tread of the first auxiliary wheel provided by this utility model.

[0035] Figure 4 This is a schematic diagram of the overpass chassis provided by this utility model passing through the target trench.

[0036] Figure label:

[0037] 1. Chassis body; 2. First traveling wheel; 3. Second traveling wheel; 4. Target trench; 5. First auxiliary wheel; 6. Second auxiliary wheel; 7. Track; 8. Level road surface. Detailed Implementation

[0038] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0039] The following is combined Figures 1 to 4 The present invention describes a track-crossing chassis for crossing a track 7 with grooves on the side. The track-crossing capability of the track-crossing chassis is its ability to cross the grooves on the side of the track 7.

[0040] like Figures 1 to 4 As shown, the track-crossing chassis provided in this embodiment of the present invention includes a chassis body 1, traveling wheels and auxiliary wheels.

[0041] Specifically, both the traveling wheels and the auxiliary wheels are located on the chassis body 1, and the traveling wheels and the auxiliary wheels are located on the same side of the chassis body 1.

[0042] The traveling wheels include a first traveling wheel 2 and a second traveling wheel 3, which are distributed longitudinally along the chassis body 1. The longitudinal direction of the chassis body 1 is the front-to-back direction, corresponding to the front-to-back direction of the automated guided vehicle, as shown in the reference section. Figure 1 The direction indicated by y. The lateral direction of chassis body 1 is the left-right direction of chassis body 1, corresponding to the left-right direction of the automated guided vehicle. The lateral direction of chassis body 1 is perpendicular to the longitudinal direction of chassis body 1. The lateral direction of chassis body 1 is referenced to... Figure 1 The direction indicated by x in the middle.

[0043] In a specific embodiment, two first traveling wheels 2 and two second traveling wheels 3 are provided. The two first traveling wheels 2 are located at one end of the longitudinal direction of the chassis body 1, and are distributed at intervals along the lateral direction of the chassis body 1. The two second traveling wheels 3 are located at the other end of the longitudinal direction of the chassis body 1, and are distributed at intervals along the lateral direction of the chassis body 1.

[0044] The axis of the auxiliary wheel is set along the transverse direction of the chassis body 1, and the longitudinal direction of the chassis body 1 is perpendicular to the transverse direction of the chassis body 1.

[0045] The maximum distance between the tread of the auxiliary wheel and the chassis body 1 is the first distance, such as... Figure 3 The distance indicated by L1; the maximum distance between the tire tread of the traveling wheel and the chassis body 1 is the second distance, such as... Figure 3 The distance indicated by L2; the first distance is less than the second distance. That is to say, when the chassis body 1 is set in the horizontal direction and the traveling wheels and auxiliary wheels are located below the chassis body 1, the height of the lowest point of the auxiliary wheel tread is greater than the height of the lowest point of the traveling wheel tread.

[0046] Specifically, the difference between the second distance and the first distance can be controlled within the range of 3 to 5 millimeters.

[0047] When both the first traveling wheel 2 and the second traveling wheel 3 are on the flat road surface 8, the first traveling wheel 2 and the second traveling wheel 3 support the chassis body 1, while the auxiliary wheel is suspended in the air and its tread does not contact the flat road surface 8. The first traveling wheel 2 and the second traveling wheel 3 rotate relative to the chassis body 1, which can drive the chassis body 1 to move.

[0048] Along the longitudinal direction of the chassis body 1, the distance between the axis of the auxiliary wheel and the axis of the traveling wheel is greater than the width of the target groove 4. The target groove 4 can be a groove located on the side of the track 7, or it can be other types of grooves; the form of the target groove 4 is not limited.

[0049] When one of the first traveling wheel 2, the second traveling wheel 3, and the auxiliary wheel is above the target groove 4, the other two are on the smooth road surface 8. In some embodiments, the minimum distance between the tread of the auxiliary wheel and the tread of the traveling wheel along the longitudinal direction of the chassis body 1 may be greater than the width of the target groove 4.

[0050] As the chassis travels along the track and the first traveling wheel 2 gradually enters the target ditch 4, the second traveling wheel 3 and the auxiliary wheel are both located on the flat surface 8. As the height of one end of the chassis body 1 corresponding to the target ditch 4 gradually decreases, the auxiliary wheel gradually approaches and contacts the flat surface 8, while the second traveling wheel 3 and the auxiliary wheel support the chassis body 1. The rotation of the second traveling wheel 3 and the auxiliary wheel relative to the chassis body 1 can cause the chassis body 1 to shift, thereby causing the first traveling wheel 2 to cross the target ditch 4.

[0051] Similarly, as the chassis travels along the track and the second traveling wheel 3 gradually enters the target ditch 4, the first traveling wheel 2 and the auxiliary wheel are both located on the flat surface 8. As the height of one end of the chassis body 1 corresponding to the target ditch 4 gradually decreases, the auxiliary wheel gradually approaches and contacts the flat surface 8, and the first traveling wheel 2 and the auxiliary wheel support the chassis body 1. The rotation of the first traveling wheel 2 and the auxiliary wheel relative to the chassis body 1 can drive the chassis body 1 to move, thereby driving the second traveling wheel 3 to cross the target ditch 4.

[0052] With this configuration, the automated guided vehicle with the track-crossing chassis provided in this embodiment of the present invention can automatically cross the grooves on the side of the track 7, thereby improving its passability.

[0053] In this embodiment, the auxiliary wheel includes a first auxiliary wheel 5 and a second auxiliary wheel 6.

[0054] The first auxiliary wheel 5 corresponds to the first traveling wheel 2, and the distance between the axis of the first auxiliary wheel 5 and the axis of the first traveling wheel 2 is greater than the width of the target groove 4. The first auxiliary wheel 5 is located near the first traveling wheel 2, and as the first traveling wheel 2 gradually enters the target groove 4, the chassis body 1 is supported by the first auxiliary wheel 5 and the second traveling wheel 3.

[0055] The second auxiliary wheel 6 corresponds to the second traveling wheel 3, and the distance between the axis of the second auxiliary wheel 6 and the axis of the second traveling wheel 3 is greater than the depth of the target trench 4. The second auxiliary wheel 6 is located near the second traveling wheel 3, and as the second traveling wheel 3 gradually enters the target trench 4, the chassis body 1 is supported by the second auxiliary wheel 6 and the first traveling wheel 2.

[0056] It should be noted that the distances between the axis of the first auxiliary wheel 5 and the axis of the first traveling wheel 2, and between the axis of the second auxiliary wheel 6 and the axis of the second traveling wheel 3, cannot be too large. These distances need to be determined based on the longitudinal dimensions of the chassis body 1, the diameters of the first and second traveling wheels 2 and 3, the width of the target groove 4, the difference between the second and first distances corresponding to the first auxiliary wheel 5, and the difference between the second and first distances corresponding to the second auxiliary wheel 6. The first auxiliary wheel 5 must contact the smooth road surface 8 before the first traveling wheel 2 is completely within the target groove 4 and before its tread contacts the inner wall of the target groove 4. Similarly, the second auxiliary wheel 6 must contact the smooth road surface 8 before the second traveling wheel 3 is completely within the target groove 4 and before its tread contacts the inner wall of the target groove 4.

[0057] In some embodiments, the first auxiliary wheel 5 is positioned on the side of the first traveling wheel 2 away from the second traveling wheel 3. In this case, the second auxiliary wheel 6 can be positioned on the side of the second traveling wheel 3 closer to the first traveling wheel 2, or on the side of the second traveling wheel 3 away from the first traveling wheel 2.

[0058] In other embodiments, the first auxiliary wheel 5 is positioned on the side of the first traveling wheel 2 closest to the second traveling wheel 3. In this case, the second auxiliary wheel 6 can be positioned on the side of the second traveling wheel 3 closest to the first traveling wheel 2, or it can be positioned on the side of the second traveling wheel 3 furthest from the first traveling wheel 2.

[0059] In other words, the first auxiliary wheel 5 can be positioned either on the side of the first traveling wheel 2 furthest from the second traveling wheel 3, or on the side of the first traveling wheel 2 closest to the second traveling wheel 3. Similarly, the second auxiliary wheel 6 can be positioned either on the side of the second traveling wheel 3 furthest from the first traveling wheel 2, or on the side of the second traveling wheel 3 closest to the first traveling wheel 2. Alternatively, both the first auxiliary wheel 5 and the second auxiliary wheel 6 can be positioned between the first traveling wheel 2 and the second traveling wheel 3; or both can be positioned on the side of the first traveling wheel 2 furthest from the second traveling wheel 3; or one of the first auxiliary wheel 5 and the second auxiliary wheel 6 can be positioned between the first traveling wheel 2 and the second traveling wheel 3, and the other on the side of the first traveling wheel 2 furthest from the second traveling wheel 3. The specific positional relationship between the first auxiliary wheel 5 and the second auxiliary wheel 6 is not limited, as long as the distance between the first auxiliary wheel 5 and the first traveling wheel 2, and the distance between the second auxiliary wheel 6 and the second traveling wheel 3, meets the requirements.

[0060] In some embodiments, only one first auxiliary wheel 5 and one second auxiliary wheel 6 may be provided. In this case, the first auxiliary wheel 5 and the second auxiliary wheel 6 need to be located in the center of the transverse direction of the chassis body 1.

[0061] As the first traveling wheel 2 gradually enters the target trench 4, the first auxiliary wheel 5 and the two second traveling wheels 3 provide three-point support for the chassis body 1. As the second traveling wheel 3 gradually enters the target trench 4, the second auxiliary wheel 6 and the two first traveling wheels 2 provide three-point support for the chassis body 1.

[0062] In this embodiment of the invention, at least two first auxiliary wheels 5 are provided, and each first auxiliary wheel 5 is distributed laterally at intervals along the chassis body 1. As the first traveling wheel 2 gradually enters the target groove 4, each first auxiliary wheel 5 and the two second traveling wheels 3 can provide stable support for the chassis body 1.

[0063] At least two second auxiliary wheels 6 are provided, and each second auxiliary wheel 6 is distributed laterally at intervals along the chassis body 1. As the second traveling wheel 3 gradually enters the target trench 4, each second auxiliary wheel 6 and the two first traveling wheels 2 can provide stable support for the chassis body 1.

[0064] In this embodiment, the tread size of the auxiliary wheel along the lateral direction of the chassis body 1 is larger than that of the traveling wheel along the lateral direction of the chassis body 1. This arrangement improves the stability of the track-crossing chassis, ensuring stability even when only one of each of the first auxiliary wheel 5 and the second auxiliary wheel 6 is provided.

[0065] In some embodiments, the auxiliary wheel itself does not have a drive mechanism, while both the first traveling wheel 2 and the second traveling wheel 3 have drive mechanisms. The possibility of the first traveling wheel 2 and the second traveling wheel 3 being simultaneously located in the trench is extremely small. When one of the first traveling wheel 2 and the second traveling wheel 3 is located in the target trench 4, the auxiliary wheel and the other are both located on the flat road surface 8, and the other of the first traveling wheel 2 and the second traveling wheel 3 can provide driving force.

[0066] In other embodiments, the auxiliary wheel includes an auxiliary wheel body and a driving member. The auxiliary wheel body is rotatably disposed on the bottom of the chassis body 1, and the driving member is disposed on the chassis body 1. The driving member is used to drive the auxiliary wheel body to rotate relative to the chassis body 1.

[0067] The auxiliary wheel itself has a drive component. When one of the first traveling wheel 2 and the second traveling wheel 3 is located in the target groove 4, both the auxiliary wheel and the other can provide driving force, which can enable the over-rail chassis to quickly cross the target groove 4.

[0068] Moreover, under extreme conditions such as when the target grooves 4 are relatively dense, when both the first traveling wheel 2 and the second traveling wheel 3 are located in the grooves, the chassis can also cross the grooves by relying on the driving force of the auxiliary wheel, thus improving the passability of the chassis.

[0069] In some embodiments, during the chassis's movement over the track, the drive mechanism of the auxiliary wheel is continuously operated, so that the auxiliary wheel body rotates continuously relative to the chassis body 1 even when it is not in contact with the ground. Thus, when at least one of the first traveling wheel 2 and the second traveling wheel 3 is located in the target ditch 4, the auxiliary wheel can provide driving force as long as it is in contact with the smooth road surface 8. No additional detection elements are required, resulting in a simple structure.

[0070] In other embodiments, the track-crossing chassis also includes a groove detection mechanism and a control mechanism.

[0071] The ditch detection mechanism is installed on the chassis body 1 and is used to detect the road conditions in front of the chassis body 1. Both the drive unit and the ditch detection mechanism are electrically connected to the control mechanism, which can control the start and stop of the drive unit according to the road conditions in front of the chassis body 1.

[0072] With this configuration, when the first traveling wheel 2 and the second traveling wheel 3 are detected to be about to enter the target trench 4, the control mechanism controls the drive unit to operate, causing the auxiliary wheel body to begin rotating relative to the chassis body 1. When it is detected that neither the first traveling wheel 2 nor the second traveling wheel 3 will approach the target trench 4, the control mechanism controls the drive unit to stop operating, causing the auxiliary wheel body to stop rotating, thus saving energy.

[0073] Specifically, a vision camera can be selected as the aforementioned groove detection mechanism. The vision camera can capture images of the road conditions under the chassis body 1, and the control mechanism can analyze and determine whether there is a target groove 4 under the chassis body 1 based on the images.

[0074] In this embodiment, multiple mounting positions are provided on the chassis body 1, and these mounting positions are distributed at intervals along the longitudinal direction of the chassis body 1. Along the longitudinal direction of the chassis body 1, the distance between each mounting position and the axis of the traveling wheel is different and all are greater than the width of the target groove 4.

[0075] The auxiliary wheels can be installed in any mounting position. By installing the auxiliary wheels in different mounting positions, the track-crossing chassis can have different abilities to cross grooves. The grooves in the application scenarios of the track-crossing chassis can be any groove other than the groove on the side of track 7. The width of these grooves is variable. The appropriate mounting position for installing the auxiliary wheels can be selected according to the width of the grooves in the application scenarios of the track-crossing chassis, so that the track-crossing chassis's ability to cross grooves is adapted to the application environment of the track-crossing chassis.

[0076] In summary, the overpass chassis provided by this utility model utilizes the height difference between the auxiliary wheels and the traveling wheels. When traveling on a flat road surface 8, it relies on the traveling wheels for support. When it needs to pass through the target ditch 4, it relies on the auxiliary wheels for transitional support, thus realizing the passability of the overpass chassis and the automatic guided vehicle to the target ditch 4. The structure is simple and the cost is low.

[0077] On the other hand, this embodiment of the present invention also provides an automated guided vehicle, including the track-crossing chassis provided in any of the above embodiments. The track-crossing chassis provided in any of the above embodiments can automatically cross the grooves on the side of the track 7; therefore, the automated guided vehicle provided in this embodiment can automatically cross the grooves on the side of the track 7, exhibiting excellent passability. The derivation process of the beneficial effects of the automated guided vehicle in this embodiment of the present invention is largely similar to the derivation process of the beneficial effects of the track-crossing chassis described above, and therefore will not be repeated here.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rail-crossing chassis, characterized in that, include: Chassis body (1); The traveling wheels are disposed on the chassis body (1), and the traveling wheels include a first traveling wheel (2) and a second traveling wheel (3) distributed longitudinally along the chassis body (1). An auxiliary wheel is provided on the chassis body (1). The auxiliary wheel and the traveling wheel are located on the same side of the chassis body (1). The axis of the auxiliary wheel is arranged in the transverse direction of the chassis body (1). The longitudinal direction of the chassis body (1) is perpendicular to the transverse direction of the chassis body (1). The maximum distance between the tread of the auxiliary wheel and the chassis body (1) is a first distance. The maximum distance between the tread of the traveling wheel and the chassis body (1) is a second distance. The first distance is less than the second distance. Along the longitudinal direction of the chassis body (1), the distance between the axis of the auxiliary wheel and the axis of the traveling wheel is greater than the width of the target groove (4).

2. The overpass chassis according to claim 1, characterized in that, The auxiliary wheel includes: The first auxiliary wheel (5) corresponds to the first traveling wheel (2), and the distance between the axis of the first auxiliary wheel (5) and the axis of the first traveling wheel (2) is greater than the width of the target groove (4); The second auxiliary wheel (6) corresponds to the second traveling wheel (3), and the distance between the axis of the second auxiliary wheel (6) and the axis of the second traveling wheel (3) is greater than the depth of the target trench (4).

3. The overpass chassis according to claim 2, characterized in that, The first auxiliary wheel (5) is located on the side of the first traveling wheel (2) away from the second traveling wheel (3); The second auxiliary wheel (6) is located on the side of the second traveling wheel (3) close to the first traveling wheel (2), or the second auxiliary wheel (6) is located on the side of the second traveling wheel (3) away from the first traveling wheel (2).

4. The overpass chassis according to claim 2, characterized in that, The first auxiliary wheel (5) is disposed on the side of the first traveling wheel (2) near the second traveling wheel (3); The second auxiliary wheel (6) is located on the side of the second traveling wheel (3) close to the first traveling wheel (2), or the second auxiliary wheel (6) is located on the side of the second traveling wheel (3) away from the first traveling wheel (2).

5. The overpass chassis according to claim 3, characterized in that, At least two first auxiliary wheels (5) are provided, and each first auxiliary wheel (5) is distributed at a lateral interval along the chassis body (1); And / or, at least two second auxiliary wheels (6) are provided, and each second auxiliary wheel (6) is distributed at a lateral interval along the chassis body (1).

6. The rail-crossing chassis according to any one of claims 1-5, characterized in that, The tread of the auxiliary wheel is larger in the lateral dimension of the chassis body (1) than the tread of the traveling wheel is larger in the lateral dimension of the chassis body (1).

7. The overpass chassis according to any one of claims 1-5, characterized in that, The auxiliary wheel includes: The auxiliary wheel body is rotatably mounted on the chassis body (1) with a fixed axis. A drive unit is disposed on the chassis body (1), and the drive unit is adapted to drive the auxiliary wheel body to rotate relative to the chassis body (1).

8. The overpass chassis according to claim 7, characterized in that, Also includes: A trench detection mechanism is installed on the chassis body (1), and the trench detection mechanism is adapted to detect the road conditions in front of the chassis body (1); The control mechanism is electrically connected to both the drive unit and the trench detection mechanism. The control mechanism is adapted to control the start and stop of the drive unit according to the road conditions in front of the chassis body (1).

9. The overpass chassis according to any one of claims 1-5, characterized in that, The chassis body (1) is provided with multiple mounting positions, which are distributed at intervals along the longitudinal direction of the chassis body (1), and the auxiliary wheel is adapted to be installed in any one of the mounting positions; Along the longitudinal direction of the chassis body (1), the distance between each of the mounting positions and the axis of the walking wheel is different and all are greater than the width of the target groove (4).

10. An automated guided vehicle, characterized in that, Includes the overrail chassis as described in any one of claims 1 to 9.

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