Suspension assembly of unmanned transport vehicle

Abstract

The invention discloses a suspension assembly of an unmanned transport vehicle, the unmanned transport vehicle comprises a vehicle frame, the suspension assembly is detachably connected with the vehicle frame and arranged below the vehicle frame, and the suspension assembly is arranged in the middle of the vehicle frame in the width direction; the suspension assembly comprises a first suspension assembly and a second suspension assembly which are oppositely arranged at an interval; a first accommodating space is formed among the frame, the first suspension assembly and the second suspension assembly; a second accommodating space is formed between the frame and one side, far away from the second suspension assembly, of the first suspension assembly; a third accommodating space is formed between the frame and one side, far away from the first suspension assembly, of the second suspension assembly; and the first accommodating space, the second accommodating space and the third accommodating space are used for assembling different functional modules. According to the suspension assembly, the occupied space of the suspension assembly can be reduced, the requirements for the strength and fatigue resistance of the suspension assembly are lowered, and then the weight of the suspension assembly is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned transport vehicles, and in particular to a suspension assembly of an unmanned transport vehicle. Background Art

[0002] In order to reduce transportation costs, heavy-duty unmanned transport vehicles are now more and more widely used in the field of logistics and transportation. What makes heavy-duty unmanned transport vehicles different from traditional transport vehicles is that they also need to integrate an intelligent driving system on the vehicle to achieve unmanned driving. In addition, current heavy-duty unmanned transport vehicles are generally driven by hydrogen energy or electric energy, and correspondingly, hydrogen fuel systems or batteries and electronic control systems need to be integrated on the vehicle. Existing heavy-duty unmanned transport vehicles use an integrated suspension assembly, and the above-mentioned systems are integrated on the frame through an integrated suspension assembly. In actual use, since the unmanned transport vehicle needs to bear a large drop box load, and will repeatedly experience starting acceleration and parking braking during driving, this will produce higher requirements for the strength and fatigue resistance of the suspension assembly. However, in order to meet the strength and fatigue resistance requirements, the integrated suspension assembly currently used in heavy-duty unmanned transport vehicles will have too much weight of the suspension assembly itself, which increases the weight of the unmanned transport vehicle and shortens the endurance time, increasing the cost of using the unmanned transport vehicle. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a suspension assembly for an unmanned transport vehicle, which reduces the requirements for the strength and fatigue resistance of the suspension assembly while increasing the load capacity of the suspension assembly.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A suspension assembly of an unmanned transport vehicle, the unmanned transport vehicle comprising a frame, the suspension assembly being detachably connected to the frame and disposed below the frame, and the suspension assembly being disposed centrally in the width direction of the frame; the suspension assembly comprising a first suspension component and a second suspension component which are disposed opposite to and spaced apart from each other; a first accommodating space being formed between the frame, the first suspension component and the second suspension component; a second accommodating space being formed between the frame and the first suspension component on a side away from the second suspension component; a third accommodating space being formed between the frame and the second suspension component on a side away from the first suspension component; the first accommodating space, the second accommodating space and the third accommodating space being used for assembling different functional modules.

[0005] Furthermore, the first suspension assembly includes a rear load-bearing beam and at least two symmetrically arranged first cantilever beams; the upper end of the first cantilever beam is detachably connected to the frame; the rear load-bearing beam is arranged to pass through the lower ends of all the first cantilever beams in sequence, and in the length direction of the rear load-bearing beam, the rear load-bearing beam and the first cantilever beam form a first supporting area for connecting to the functional module.

[0006] Furthermore, every two of the first cantilever beams and part of the rear bearing beam form a U-shaped structure.

[0007] Furthermore, the rear bearing beam is provided with at least two connection plates in the first supporting area for detachably connecting with corresponding functional modules.

[0008] Furthermore, the ratio of the length of the first supporting area to the length of the first suspension component is 0.3-0.4.

[0009] Further, in the length direction of the first suspension assembly, the first accommodating space includes a left accommodating space and a right accommodating space, and the left accommodating space is arranged opposite to the right accommodating space.

[0010] Further, in the width direction of the frame, the lengths of the first suspension assembly and the second suspension assembly are both greater than the width of the frame.

[0011] Furthermore, a first auxiliary connection portion is provided on a side of the first suspension component away from the second suspension component, and a second auxiliary connection portion is provided on a side of the second suspension component away from the first suspension component.

[0012] Further, the first auxiliary connection portion and the second auxiliary connection portion respectively form an angle less than or equal to 90° with the vertical direction.

[0013] Furthermore, the rear bearing beam is detachably connected to the first cantilever beam.

[0014] The beneficial effects of the present invention are as follows: the suspension assembly of the present invention is mainly used on a vehicle frame with a two-bridge structure. By setting a first suspension component and a second suspension component separated from each other, three independent accommodating spaces are formed with the vehicle frame, so that different functional modules can be assembled in each accommodating space respectively, and the layout of the functional modules can be changed, so that the load points of the vehicle frame can be dispersed, and the load strength requirements of the load points of the vehicle frame can be reduced. Compared with the existing integrated suspension assembly, the weight of the functional module is dispersed to the first suspension component and the second suspension component, and the functional module located in the first accommodating space will be carried by the first suspension component and the second suspension component together, so that the load point distribution borne by the suspension assembly is more reasonable, even when the unmanned transport vehicle repeatedly performs the actions of starting acceleration and parking braking, the suspension assembly can also disperse the load, so that the suspension assembly is not easy to fatigue, reducing the requirements for the strength and fatigue resistance of the suspension assembly, and the load capacity of the suspension assembly can be increased. In addition, due to the use of a split structure, the overall weight of the suspension assembly is greatly reduced, reducing the overall weight of the unmanned transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A side view of a suspension assembly of an unmanned transport vehicle in the present invention; Figure 2 A top view of a suspension assembly of an unmanned transport vehicle in the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 A front view of a suspension assembly and a frame of an unmanned transport vehicle in the present invention; Figure 5 It is a structural schematic diagram of the second suspension assembly and the auxiliary beam in the present invention; Figure 6 It is a schematic structural diagram of the first suspension assembly in the present invention; Figure 7 The figure is a partial exploded view of a suspension assembly of an unmanned transport vehicle in the present invention.

[0016] Description of labels: 1. Frame; 2. Suspension assembly; 21. First suspension component; 211. Rear load beam; 212. First cantilever beam; 213. First support area; 214. Connecting plate; 215. First auxiliary connecting part; 22. Second suspension component; 221. Front load beam; 222. Second cantilever beam; 223. Second support area; 224. Second auxiliary connecting part; 23. First accommodating space; 24. Second accommodating space; 25. Third accommodating space; 3. First functional cabinet; 31. Heat dissipation cover; 32. Protective cover; 33. Cabinet body; 34. Connecting beam; 4. Second functional cabinet; 5. Third functional cabinet; 6. Auxiliary beam. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0018] For existing unmanned transport vehicles, the total weight of all functional modules on the vehicle is as high as about two tons, and some unmanned transport vehicles use a two-bridge structure frame 1 to reduce the deadweight of the vehicle body. Due to the large total weight of the functional modules, when the vehicle is frequently started and stopped, the strength and fatigue resistance of the suspension assembly 2 used to connect the functional modules to the frame 1 are a great test. In order to make the strength and fatigue resistance of this type of suspension assembly 2 meet the actual use requirements, the overall structure of the suspension assembly 2 is more complex, the deadweight is larger, and the space occupied is also larger, and it is more difficult to connect the suspension assembly 2 with the frame 1 and the functional module.

[0019] Based on this, please refer to Figure 1-Figure 7 , provides a suspension assembly of an unmanned transport vehicle, the unmanned transport vehicle includes a frame 1, a suspension assembly 2 is detachably connected to the frame 1 and is arranged below the frame 1, and the suspension assembly 2 is centrally arranged in the width direction of the frame 1; the suspension assembly 2 includes a first suspension component 21 and a second suspension component 22 that are relatively arranged and spaced apart; a first accommodating space 23 is formed between the frame 1, the first suspension component 21 and the second suspension component 22; a second accommodating space 24 is formed on the side of the frame 1 and the first suspension component 21 away from the second suspension component 22; a third accommodating space 25 is formed on the side of the frame 1 and the second suspension component 22 away from the first suspension component 21; the first accommodating space 23, the second accommodating space 24 and the third accommodating space 25 are used to assemble different functional modules.

[0020] It is understandable that the suspension assembly 2 of the present invention is mainly used on the frame 1 of the two-bridge structure. By setting the first suspension component 21 and the second suspension component 22 separated from each other, three independent accommodating spaces are formed with the frame 1, so that different functional modules can be assembled in each accommodating space respectively, and the layout of the functional modules can be changed, so that the load points of the frame 1 can be dispersed, and the load strength requirements of the load points of the frame 1 are reduced. Compared with the existing integrated suspension assembly 2, the weight of the functional module is dispersed to the first suspension component 21 and the second suspension component 22, and the functional module located in the first accommodating space 23 will be carried by the first suspension component 21 and the second suspension component 22, so that the load point distribution borne by the suspension assembly 2 is more reasonable. Even if the unmanned transport vehicle repeatedly performs the starting acceleration and parking braking actions, the suspension assembly 2 can also disperse the load, so that the suspension assembly 2 is not easy to fatigue, reducing the strength and fatigue resistance requirements of the suspension assembly 2, and the load capacity of the suspension assembly 2 can be increased. In addition, due to the split structure, the overall weight of the suspension assembly 2 is greatly reduced, reducing the overall weight of the unmanned transport vehicle. Since the scene applied by the present invention is a heavy-duty unmanned transport vehicle, this type of unmanned transport vehicle, in addition to its own large weight, needs to carry higher tonnage of goods during transportation. Compared with a small unmanned transport vehicle, the design of the suspension assembly 2 is more difficult. The main difficulty is that due to the large weight of the functional module, the suspension assembly 2 must be able to reasonably disperse the weight of the functional module to ensure the stability of the unmanned transport vehicle, and to ensure that the strength and fatigue resistance of the suspension assembly 2 can meet the requirements. The functional modules referred to in the present invention include but are not limited to hydrogen energy systems, electronic control systems, power supply systems, water cooling systems, dye battery systems, and hydraulic systems. In addition to meeting the condition of reasonable weight dispersion, the assembly positions of the above-mentioned functional modules also need to ensure that the functional modules can be smoothly connected, that is, when considering the layout of the functional modules, in addition to considering the weight of the functional modules, it should also be considered whether the connection lines of the functional modules are the most reasonable solution. Therefore, after comprehensive consideration of various factors, a first suspension assembly 2 and a second suspension assembly 2 that are independent of each other are finally designed, and three independent accommodating spaces are formed accordingly.

[0021] In some embodiments, the first suspension assembly 21 includes a rear bearing beam 211 and at least two symmetrically arranged first cantilever beams 212; the upper end of the first cantilever beam 212 is detachably connected to the frame 1; the rear bearing beam 211 is sequentially arranged through the lower ends of all the first cantilever beams 212, and in the length direction of the rear bearing beam 211, the rear bearing beam 211 and the first cantilever beam 212 form a first support area 213 for connecting with the functional module. By detachably connecting the first cantilever beam 212 to the frame 1, it is convenient to assemble the shock absorber, and the shock absorption effect of the functional module is improved compared with the integrated suspension assembly 2. Preferably, two first cantilever beams 212 are provided, and there is a spacing between the two first cantilever beams 212, and the two first cantilever beams 212 are arranged nearly in the middle in the length direction of the rear bearing beam 211, so that the lengths of the two first support areas 213 on the rear bearing beam 211 are nearly equal. By providing the rear bearing beam 211 and the two first cantilever beams 212, and arranging the two first cantilever beams 212 at the optimal positions on the rear bearing beam 211, it is possible to ensure that there is sufficient space on the rear bearing beam 211 to assemble the functional module, and to ensure the structural stability and strength of the first suspension assembly 21. Specifically, the end of the first cantilever beam 212 away from the vehicle frame 1 is the lower end, and a first through hole is provided at the lower end of the first cantilever beam 212 for the rear bearing beam 211 to pass through, and the first through hole should match the cross-sectional shape of the rear bearing beam 211 to ensure the stability of the rear bearing beam 211 and the first cantilever beam 212. Correspondingly, the second suspension assembly 22 includes a front load-bearing beam 221 and at least two symmetrically arranged second cantilever beams 222, and the upper ends of the second cantilever beams 222 are detachably connected to the frame 1; the front load-bearing beam 221 passes through the lower ends of all the second cantilever beams 222 in sequence, and in the length direction of the front load-bearing beam 221, the front load-bearing beam 221 and the second cantilever beams 222 form a second support area 223 for connecting to the functional module.

[0022] In some embodiments, the rear load-bearing beam 211 and the first cantilever beam 212 are detachably connected to facilitate assembly and adjustment of the relative positions of the rear load-bearing beam 211 and the first cantilever beam 212. At the same time, compared with the integrated suspension assembly 2, the shock absorption effect is improved.

[0023] In some embodiments, every two first cantilever beams 212 and part of the rear bearing beam 211 form a U-shaped structure to form a stable structure, and the load of the rear bearing beam 211 is dispersed to each first cantilever beam 212, so that the fatigue resistance time of the rear bearing beam 211 is extended, that is, the service life is extended.

[0024] In some embodiments, the rear load beam 211 is provided with at least two connecting plates 214 in the first supporting area 213 for detachably connecting with corresponding functional modules. The connecting plates 214 are provided for rapid positioning and rapid assembly of the functional modules, thereby improving assembly efficiency. Furthermore, a shock absorber 216 is provided on the connecting plate 214, and the shock absorber 216 is sandwiched between the connecting plate 214 and the corresponding functional module.

[0025] In some embodiments, the ratio of the length of the first support area 213 to the length of the first suspension assembly 21 is 0.3-0.4, and optionally, the ratio is 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39 or 0.4, and preferably, the ratio is 0.32 to ensure that the functional module has sufficient installation space and good stability on the rear bearing beam 211. Correspondingly, the ratio of the length of the second support area 223 to the second suspension assembly 22 is also 0.32.

[0026] In some embodiments, in the length direction of the first suspension assembly 21, the first accommodation space 23 includes a left accommodation space and a right accommodation space, and the left accommodation space is arranged opposite to the right accommodation space. Correspondingly, the second accommodation space 24 and the third accommodation space 25 also form two opposite accommodation spaces, so that the distribution of the functional modules is more reasonable.

[0027] In some embodiments, in the width direction of the frame 1, the lengths of the first suspension assembly 21 and the second suspension assembly 22 are both greater than the width of the frame 1. Preferably, the difference between the lengths of the first suspension assembly 21 and the second suspension assembly 22 and the width of the frame 1 should not be too large to prevent the first suspension assembly 21 and the second suspension assembly 22 from affecting the overall size of the unmanned transport vehicle and affecting the stability of the unmanned transport vehicle.

[0028] In some embodiments, a first auxiliary connection portion 215 is provided on a side of the first suspension component 21 away from the second suspension component 22, and a second auxiliary connection portion 224 is provided on a side of the second suspension component 22 away from the first suspension component 21. Further, the first auxiliary connection portion 215 and the second auxiliary connection portion 224 respectively form an angle less than or equal to 90° with the vertical direction. Optionally, the angle is 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89° or 90°, and preferably, the angle is 90°. In some embodiments, the first functional cabinet 3, the second functional cabinet 4 and the third functional cabinet 5 are respectively arranged in the first accommodation space 23, the second accommodation space 24 and the third accommodation space 25; wherein the third functional cabinet 5 is connected to the second auxiliary connecting portion 224 through the auxiliary beam 6, and the auxiliary beam 6 is used to play an extension role, forming a gap between the third functional cabinet 5 and the first functional cabinet 3 to ensure the heat dissipation effect. Taking the first functional cabinet 3 as an example, the first functional cabinet 3 includes a heat dissipation cover 31, a protective cover plate 32 and a cabinet body 33, the heat dissipation cover 31 is covered on at least one side of the cabinet body 33, and the protective cover plate 32 covers the area of ​​the cabinet body 33 not covered by the heat dissipation cover 31; the two ends of the cabinet body 33 in the length direction are respectively provided with connecting beams 34, and the connecting beams 34 are used to connect with the rear load-bearing beam 211 and the front load-bearing beam 221 respectively.

[0029] Embodiment 1 of the present invention is: A suspension assembly of an unmanned transport vehicle, the unmanned transport vehicle includes a frame 1, a suspension assembly 2 detachably connected to the frame 1 and arranged below the frame 1, and the suspension assembly 2 is centrally arranged in the width direction of the frame 1; the suspension assembly 2 includes a first suspension component 21 and a second suspension component 22 that are relatively arranged and spaced apart; a first accommodating space 23 is formed between the frame 1, the first suspension component 21 and the second suspension component 22; a second accommodating space 24 is formed between the frame 1 and the first suspension component 21 on a side away from the second suspension component 22; a third accommodating space 25 is formed between the frame 1 and the second suspension component 22 on a side away from the first suspension component 21; the first accommodating space 23, the second accommodating space 24 and the third accommodating space 25 are used to assemble different functional modules.

[0030] In this embodiment, the first suspension assembly 21 includes a rear bearing beam 211 and at least two symmetrically arranged first cantilever beams 212; the rear bearing beam 211 is detachably connected to the first cantilever beam 212; the upper end of the first cantilever beam 212 is detachably connected to the frame 1; the rear bearing beam 211 is sequentially arranged through the lower ends of all the first cantilever beams 212, and in the length direction of the rear bearing beam 211, the rear bearing beam 211 and the first cantilever beam 212 form a first support area 213 for connecting with the functional module. Preferably, there are two first cantilever beams 212, there is a spacing between the two first cantilever beams 212, and the two first cantilever beams 212 are arranged nearly in the center in the length direction of the rear bearing beam 211. Specifically, the end of the first cantilever beam 212 away from the frame 1 is the lower end, and a first through hole for the rear bearing beam 211 to pass through is arranged at the lower end of the first cantilever beam 212, and the first through hole should match the cross-sectional shape of the rear bearing beam 211. Correspondingly, the second suspension assembly 22 includes a front load-bearing beam 221 and two symmetrically arranged second cantilever beams 222, the upper ends of the second cantilever beams 222 are detachably connected to the frame 1; the front load-bearing beam 221 and the second cantilever beams 222 are detachably connected, the front load-bearing beam 221 passes through the lower ends of all the second cantilever beams 222 in sequence, and in the length direction of the front load-bearing beam 221, the front load-bearing beam 221 and the second cantilever beams 222 form a second support area 223 for connecting to the functional module.

[0031] In this embodiment, the two first cantilever beams 212 and a portion of the rear bearing beam 211 form a U-shaped structure, and the two second cantilever beams 222 and a portion of the front bearing beam 221 also form a U-shaped structure.

[0032] In this embodiment, the rear load beam 211 is provided with two connection plates 214 for detachably connecting with the corresponding functional modules in the first support area 213; correspondingly, the front load beam 221 is also provided with two connection plates 214 for detachably connecting with the corresponding functional modules in the second support area 223. The connection plates 214 are provided with shock absorbers 216, which are sandwiched between the connection plates 214 and the corresponding functional modules.

[0033] In this embodiment, the ratio of the length of the first supporting area 213 to the length of the first suspension component 21 is 0.32, and the ratio of the length of the second supporting area 223 to the length of the second suspension component 22 is also 0.32.

[0034] In this embodiment, in the length direction of the first suspension assembly 21, the first accommodation space 23 includes a left accommodation space and a right accommodation space, and the left accommodation space is arranged opposite to the right accommodation space. Correspondingly, the second accommodation space 24 and the third accommodation space 25 also form two opposite accommodation spaces.

[0035] In this embodiment, in the width direction of the frame 1 , the lengths of the first suspension assembly 21 and the second suspension assembly 22 are both greater than the width of the frame 1 .

[0036] In this embodiment, a first auxiliary connection portion 215 is provided on a side of the first suspension component 21 away from the second suspension component 22, and a second auxiliary connection portion 224 is provided on a side of the second suspension component 22 away from the first suspension component 21. Furthermore, the first auxiliary connection portion 215 and the second auxiliary connection portion 224 respectively form an angle of 90° with the vertical direction.

[0037] In this embodiment, the first functional cabinet 3, the second functional cabinet 4 and the third functional cabinet 5 are respectively arranged in the first accommodating space 23, the second accommodating space 24 and the third accommodating space 25; wherein the third functional cabinet 5 is connected to the second auxiliary connecting portion 224 via the auxiliary beam 6. The first functional cabinet 3 includes a heat dissipation cover 31, a protective cover plate 32 and a cabinet body 33, wherein the heat dissipation cover 31 is arranged on three surfaces of the cabinet body 33, and the protective cover plate 32 covers the area of ​​the cabinet body 33 not covered by the heat dissipation cover 31; the two ends of the cabinet body 33 in the length direction are respectively provided with connecting beams 34, and the connecting beams 34 are used to be connected to the rear load-bearing beam 211 and the front load-bearing beam 221 respectively.

[0038] In summary, the present invention provides a suspension assembly for an unmanned transport vehicle, which adopts a split structure to form a suspension assembly, so that the load of the functional module is dispersed at different positions of the frame, reducing the requirements for the strength and fatigue resistance of the suspension assembly, so the dead weight of the suspension assembly is also lighter. And because the suspension assembly adopts a split structure, the space occupied by the suspension assembly is smaller. On this basis, the space utilization under the frame will be more reasonable, and the difficulty of assembly will be greatly reduced. The functional module can be freely adjusted, and each functional module is independent of each other, which is convenient for disassembly and maintenance.

[0039] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A suspension assembly of an unmanned transport vehicle, the unmanned transport vehicle comprising a frame, characterized in that: The suspension assembly is detachably connected to the frame and is arranged below the frame, and the suspension assembly is arranged in the center of the width direction of the frame; The suspension assembly comprises a first suspension component and a second suspension component which are arranged opposite to each other and spaced apart; A first accommodating space is formed between the vehicle frame, the first suspension assembly and the second suspension assembly; The frame and a side of the first suspension component away from the second suspension component form a second accommodating space; The frame and the second suspension component form a third accommodating space on a side away from the first suspension component; The first accommodating space, the second accommodating space and the third accommodating space are used to assemble different functional modules.

2. The suspension assembly of an unmanned transport vehicle according to claim 1, characterized in that: The first suspension assembly includes a rear load-bearing beam and at least two symmetrically arranged first cantilever beams; The upper end of the first cantilever beam is detachably connected to the vehicle frame; The rear bearing beam is sequentially arranged to pass through the lower ends of all the first cantilever beams, and in the length direction of the rear bearing beam, the rear bearing beam and the first cantilever beam form a first supporting area for connecting with a functional module.

3. The suspension assembly of an unmanned transport vehicle according to claim 2, characterized in that: Every two of the first cantilever beams and part of the rear bearing beam form a U-shaped structure.

4. The suspension assembly of an unmanned transport vehicle according to claim 2, characterized in that: The rear bearing beam is provided with at least two connection plates in the first supporting area for detachably connecting with corresponding functional modules.

5. The suspension assembly of an unmanned transport vehicle according to claim 2, characterized in that: The ratio of the length of the first supporting area to the length of the first suspension component is 0.3-0.

4.

6. The suspension assembly of an unmanned transport vehicle according to claim 1, characterized in that: In the length direction of the first suspension assembly, the first accommodating space includes a left accommodating space and a right accommodating space, and the left accommodating space is arranged opposite to the right accommodating space.

7. The suspension assembly of an unmanned transport vehicle according to claim 1, characterized in that: In the width direction of the frame, the lengths of the first suspension assembly and the second suspension assembly are both greater than the width of the frame.

8. The suspension assembly of an unmanned transport vehicle according to claim 1, characterized in that: A first auxiliary connection portion is provided on a side of the first suspension component away from the second suspension component, and a second auxiliary connection portion is provided on a side of the second suspension component away from the first suspension component.

9. The suspension assembly of an unmanned transport vehicle according to claim 8, characterized in that: The first auxiliary connection portion and the second auxiliary connection portion respectively form an angle less than or equal to 90° with the vertical direction.

10. The suspension assembly of an unmanned transport vehicle according to claim 2, characterized in that: The rear bearing beam is detachably connected to the first cantilever beam.

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