Logistics vehicle

Abstract

The utility model provides a logistics vehicle. The logistics vehicle comprises a wheel mechanism and a vehicle frame assembly. The wheel mechanism comprises a damping assembly and a wheel assembly. The damping assembly comprises a first fixing plate, a damping piece and a second fixing plate. The first fixing plate is used for installing a box body. In the vertical direction of the frame assembly, the damping piece is located between the first fixing plate and the second fixing plate, one end of the damping piece makes contact with the wheel assembly, and the other end of the damping piece makes contact with the first fixing plate. The second fixing plate is fixed to the frame assembly and used for limiting the downward moving position of the wheel assembly. By means of the arrangement, when the logistics vehicle passes through a road section with poor road conditions, bumping caused by the road conditions can be efficiently counteracted, and transported articles are protected. And meanwhile, the wheel assemblies can reciprocate within a limited distance under the action of the damping pieces, so that the bumping degree of the logistics vehicle is reduced, the stability of transported articles is improved, and the articles are prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and particularly to a logistics vehicle. Background Art

[0002] With the rapid development of industrial technology, the popularization range of various vehicles is getting wider and wider, which greatly facilitates people's life and production. Among them, various push-pull carts are more popular among people due to their advantages such as light weight, low cost, and simple use, especially in the fields of people's camping, grocery shopping, and factory workers' transporting items, etc., with a higher penetration rate.

[0003] In order to reduce the impact on goods caused by uneven ground conditions, shock-absorbing components are usually added to push-pull carts in the existing market, thereby improving the shock resistance of the vehicles. However, the shock-absorbing stroke of the push-pull carts in the prior art is relatively large. When the push-pull cart passes through a bumpy section of the road, it will cause the vehicle to move up and down relative to the ground by a large distance, which is not conducive to fixing the items in the vehicle and is likely to damage the transported items.

[0004] Therefore, it is necessary to provide an improved logistics vehicle to solve some or all of the above problems. Utility Model Content

[0005] The present application provides a logistics vehicle with good shock absorption.

[0006] The present application provides a logistics vehicle, including a wheel mechanism and a frame assembly; the wheel mechanism includes a shock-absorbing component and a wheel assembly; the shock-absorbing component includes a first fixing plate, a shock-absorbing member, and a second fixing plate; the first fixing plate is used for installing a box body; in the up-down direction of the frame assembly, the shock-absorbing member is located between the first fixing plate and the second fixing plate, and one end of the shock-absorbing member contacts the wheel assembly, and the other end contacts the first fixing plate; the second fixing plate is fixed to the frame assembly, and the second fixing plate is used for limiting the downward movement position of the wheel assembly.

[0007] Further, the wheel assembly includes a guiding column; the guiding column slidably penetrates through the first fixing plate; the shock-absorbing member is sleeved on the guiding column.

[0008] Further, it further includes a driving component fixed to the wheel assembly; the driving component is used for driving the wheel assembly to move forward or turn; in the up-down direction of the frame assembly, the driving component can reciprocally move relative to the frame assembly along with the wheel assembly.

[0009] Further, the wheel assembly further includes a wheel member and a platform mounting plate; the wheel member and the driving component are arranged on the platform mounting plate, and the driving component is used for driving the wheel member to turn or move forward.

[0010] Furthermore, the wheel assembly further includes a guiding block fixed on the platform mounting plate; in the vertical direction of the vehicle frame assembly, the guiding block is arranged opposite to the wheel member; a part of the guiding block is slidably located between the first fixing plate and the second fixing plate.

[0011] Furthermore, the guiding block includes a block body; the block body is arranged on the platform mounting plate, and one end of the shock absorber contacts the block body; the wheel assembly includes a guiding column, and one end of the guiding column is fixed to the block body.

[0012] Furthermore, the length of the guiding column is greater than the moving stroke of the block body relative to the second fixing plate; the block body can move downward to contact the second fixing plate.

[0013] Furthermore, the shock absorber assembly further includes a guiding rod; one end of the guiding rod is fixed to the first fixing plate, and the other end is fixed to the second fixing plate; the guiding block includes a guiding sleeve fixed to the block body; the guiding sleeve is slidably sleeved on the guiding rod.

[0014] Furthermore, the wheel member includes a slave transmission part; the slave transmission part is located between the second fixing plate and the platform mounting plate; the driving assembly includes a transmission part and a driving part; the transmission part is respectively connected to the driving part and the slave transmission part.

[0015] Furthermore, it further includes a box body fixed to the first fixing plate; the shock absorber assembly and the driving assembly are located inside the vehicle frame assembly; the number of the driving assemblies is set in one-to-one correspondence with the number of the wheel assemblies.

[0016] Compared with the prior art, by arranging the shock absorber in the logistics vehicle of the present application, when the logistics vehicle passes through a section with poor road conditions, the bumps brought by the road conditions can be offset efficiently, protecting the transported items. At the same time, by limiting the downward movement position of the wheel assembly through the second fixing plate, the wheel assembly makes a reciprocating movement within a limited distance under the action of the shock absorber, thereby reducing the bump degree of the logistics vehicle, improving the stability of the transported items, and avoiding damage to the items.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with this specification, and are used together with the specification to explain the principles of this specification.

[0019] Figure 1 is a perspective view of the logistics vehicle of the present application.

[0020] Figure 2 is Figure 1 A perspective view of the wheel mechanism in

[0021] Figure 3 is Figure 1 A perspective view of another angle of the wheel mechanism in

[0022] Figure 4 is Figure 2 A perspective view of the shock absorption assembly in

[0023] Figure 5 is Figure 2 A perspective view of the assembly of the guide block and guide post in the wheel mechanism and the shock absorption assembly.

[0024] Figure 6 is Figure 5 A side view of the assembly of the guide block and guide post in the wheel mechanism and the shock absorption assembly.

[0025] Figure 7 is Figure 6 A cross-sectional view of along A-A in

[0026] Figure 8 is Figure 2 A side view of the wheel mechanism in

[0027] Figure 9 is Figure 8 A cross-sectional view of along B-B in

[0028] Figure 10 is Figure 1 A perspective view of the frame assembly in

[0029] Explanation of the reference numerals in the drawings: 1 - wheel mechanism; 11 - shock absorption assembly; 111 - first fixing plate; 112 - shock absorber; 113 - second fixing plate; 114 - guiding rod; 12 - wheel assembly; 121 - guiding post; 122 - wheel member; 1221 - secondary transmission part; 1222 - wheel; 1223 - middle connecting member; 123 - platform mounting plate; 124 - guide block; 1241 - block main body; 1242 - guiding sleeve; 1243 - upper block body; 1244 - support leg; 13 - driving assembly; 131 - transmission member; 132 - driving member; 133 - support frame; 14 - front wheel mechanism; 15 - rear wheel mechanism; 2 - frame assembly; 21 - chassis; 22 - frame. Detailed implementation manner

[0030] As Figure 1As shown, the logistics vehicle of the present application includes a wheel mechanism 1, a frame assembly 2 and a box body (not shown). The wheel mechanism 1 is connected to the frame assembly 2, and the box body is located inside the frame assembly 2 and connected to the wheel mechanism 1. The wheel mechanism 1 is used to drive the logistics vehicle to move and turn. The box body is used to hold items.

[0031] Further integration Figures 2 to 4 As shown, in one embodiment, the wheel mechanism 1 includes a shock absorbing assembly 11, a wheel assembly 12 and a driving assembly 13. The shock absorbing assembly 11 is fixed to the frame assembly 2, the wheel assembly 12 is connected to the shock absorbing assembly 11, and the wheel assembly 12 can move relative to the shock absorbing assembly 11, so that when the logistics vehicle passes through a section with poor road conditions, the shock absorbing assembly 11 can reduce the bumps of the road surface on the wheel assembly 12, thereby improving the passability and transportation safety of the logistics vehicle.

[0032] In one embodiment, the shock absorbing assembly 11 includes a first fixing plate 111, a shock absorbing member 112, a second fixing plate 113, and a guide rod 114. The first fixing plate 111 is located in the frame assembly 2 and is used to install the box body, so that the box body can be fixed on the first fixing plate 111. In the up and down direction of the frame assembly 2, the shock absorbing member 112 is located between the first fixing plate 111 and the second fixing plate 113. Specifically, one end of the shock absorbing member 112 contacts the first fixing plate 111, and the other end contacts the wheel assembly 12.

[0033] The shock absorber 112 is used to offset the impact force of the road surface on the wheel assembly 12. The shock absorber 112 is preferably an elastic member, such as a spring, a leaf spring, etc. This arrangement can make the shock absorber 112 have good elastic force. In addition, the shock absorber 112 can also be a leaf spring, thereby reducing the manufacturing cost of the logistics vehicle. Of course, the shock absorber 112 can also be a hydraulic cylinder, a cylinder, etc. This arrangement further improves the shock absorption effect of the vehicle and better protects the transported items.

[0034] To improve the shock absorption effect of the logistics vehicle, the shock absorber 112 is always in a compressed state, thereby ensuring that the shock absorber 112 is always in a working state to reduce the impact of the road surface on the wheel assembly 12. At the same time, to improve the shock absorption effect of the logistics vehicle, multiple shock absorbers 112 can be provided.

[0035] The second fixing plate 113 is preferably fixed to the frame assembly 2. Specifically, the second fixing plate 113 can be fixed by screwing, welding or riveting. The second fixing plate 113 is used to limit the downward movement of the wheel assembly 12, so that the wheel assembly 12 can reciprocate over a limited distance under the action of the shock absorber 112, thereby reducing the bumpiness of the logistics vehicle, improving the stability of the transported items, and avoiding damage to the items.

[0036] One end of the guide rod 114 is fixed to the first fixing plate 111, and the other end is fixed to the second fixing plate 113. The guide rod 114 is used to guide the wheel assembly 12 to slide in the up and down direction of the frame assembly 2. The guide rod 114 is preferably cylindrical. Of course, the guide rod 114 can also be elliptical, square or triangular. As long as the guiding function of the guide rod 114 is met, the shape of the guide rod 114 is not limited in the present application.

[0037] In the up-down direction of the frame assembly 2, the second fixing plate 113 is located below the first fixing plate 111, and the shock absorbing assembly 11 is located inside the frame assembly 2. In another embodiment, the first fixing plate 111 can be fixed to the frame assembly 2, and the shock absorbing assembly 11 is located below the frame assembly 2. With such a configuration, the distance between the frame assembly 2 and the wheel assembly 12 can be increased, that is, the height between the frame assembly 2 and the ground can be increased, thereby improving the passability of the logistics vehicle.

[0038] In one embodiment, the wheel assembly 12 is used to drive the logistics vehicle to move and turn. The number of drive assemblies 13 is set in a one-to-one correspondence with the number of wheel assemblies 12, thereby making the wheel assembly 12 move and turn more quickly. Of course, the logistics vehicle of the present application can also adopt a design in which every two wheel assemblies 12 are matched with one drive assembly 13, and the wheel assembly 12 is controlled to rotate or turn through a connecting rod mechanism, thereby reducing the manufacturing cost.

[0039] Further integration Figures 5 to 7 As shown, in one embodiment, the wheel assembly 12 includes a guide column 121, a wheel member 122, a platform mounting plate 123 and a guide block 124. In the up and down direction of the frame assembly 2, the guide column 121 is connected to the shock absorbing assembly 11 for relative movement. Specifically, one end of the guide column 121 is fixed to the guide block 124, and is slidably arranged on the first fixing plate 111. The guide column 121 is used to guide the wheel assembly 12 to move relative to the shock absorbing assembly 11. That is, when the logistics vehicle passes over an uneven road surface, the wheel assembly 12 moves toward the frame assembly 2 through the guide column 121, thereby compressing the shock absorbing member 112.

[0040] The length of the guide post 121 is greater than the moving stroke of the wheel assembly 12 relative to the frame assembly 2. With such a configuration, when the wheel assembly 12 is reset under the action of the shock absorber 112, it is prevented that the guide post 121 slips out of the first fixing plate 111, thereby causing the guide post 121 to fail. The guide post 121 is preferably cylindrical in structure. Of course, the guide post 121 may also be elliptical, square, or triangular in structure. As long as the guiding function of the guide post 121 is met, the shape of the guide post 121 is not limited in the present application.

[0041] The shock absorber 112 is preferably sleeved on the guiding column 121, and thus the shock absorber 112 can be limited by the guiding column 121. Specifically, the shock absorber 112 abuts between the first fixing plate 111 and the guiding block 124.

[0042] In one embodiment, the wheel member 122 is connected to the platform mounting plate 123. The wheel member 122 is connected to the driving assembly 13, and thus the driving assembly 13 drives the wheel member 122 to turn or move forward. In the up-and-down direction of the frame assembly 2, part of the wheel members 122 pass through the platform mounting plate 123 and are located above the platform mounting plate 123 and are connected to the driving assembly 13.

[0043] Specifically, the wheel member 122 includes a secondary transmission part 1221. The secondary transmission part 1221 is located between the second fixing plate 113 and the platform mounting plate 123, that is, the secondary transmission part 1221 is located above the platform mounting plate 123 and is connected to the driving assembly 13. The wheel member 122 includes a wheel 1222 and an intermediate connecting member 1223. The wheel 1222 is rotatably connected to the intermediate connecting member 1223. The intermediate connecting member 1223 is arranged on the platform mounting plate 123. The secondary transmission part 1221 is arranged on the intermediate connecting member 1223.

[0044] In another embodiment, the driving assembly 13 can be arranged on the intermediate connecting member 1223, and the driving assembly 13 is connected to the wheel 1222, so that the driving assembly 13 can directly drive the wheel 1222 to rotate. With such an arrangement, the components between the driving assembly 13 and the wheel 1222 are reduced, thus simplifying the design, reducing the production cost, and making the driving assembly 13 more sensitive when driving the wheel 1222.

[0045] In one embodiment, the platform mounting plate 123 is located below the frame assembly 2. To facilitate the installation of the second fixing plate 113 on the frame assembly 2, the second fixing plate 113 is located above the platform mounting plate 123, and along the length direction of the second fixing plate 113, both ends of the second fixing plate 113 extend beyond the platform mounting plate 123. The guiding block 124 is fixed on the platform mounting plate 123.

[0046] In the up-and-down direction of the frame assembly 2, the guiding block 124 and the wheel member 122 are arranged back to back on the platform mounting plate 123. The guiding block 124 is slidably connected to the shock absorber assembly 11. Specifically, the guiding block 124 is sleeved on the guiding rod 114 and moves along the guiding rod 114. Part of the guiding block 124 slides between the second fixing plate 113 and the first fixing plate 111.

[0047] The guiding and shifting block 124 includes a block main body 1241 and a guiding kit 1242. The block main body 1241 is fixed on the platform mounting plate 123, and one end of the guiding column 121 is fixed to the block main body 1241. One end of the shock absorber 112 abuts against the first fixing plate 111, and the other end abuts against the block main body 1241.

[0048] Part of the block main body 1241 is located between the first fixing plate 111 and the second fixing plate 113, and thus the block main body 1241 can be limited by the first fixing plate 111 and the second fixing plate 113. Specifically, the second fixing plate 113 passes through the block main body 1241, and the second fixing plate 113 can contact the block main body 1241, that is, the block main body 1241 can move downward to contact the second fixing plate 113, so that the wheel member 122 makes a reciprocating movement within a limited distance under the action of the shock absorber 112, reducing the bumpiness of the logistics vehicle. To prevent the guiding column 121 from disengaging from the first fixing plate 111, the length of the guiding column 121 is greater than the moving stroke of the block main body 1241 relative to the second fixing plate 113.

[0049] When the block main body 1241 moves downward to contact the second fixing plate 113, the maximum distance between the slave transmission part 1221 and the second fixing plate 113 is greater than the moving stroke of the wheel assembly 12 relative to the second fixing plate 113. With such a setting, the slave transmission part 1221 is prevented from colliding with the second fixing plate 113.

[0050] The block main body 1241 includes an upper block body 1243 and supporting feet 1244. The upper block body 1243 is located between the second fixing plate 113 and the first fixing plate 111. One end of the guiding column 121 is fixed to the upper block body 1243, and one end of the shock absorber 112 abuts against the upper block body 1243. The supporting feet 1244 extend from the upper block body 1243 towards the platform mounting plate 123. The supporting feet 1244 are fixed to the platform mounting plate 123.

[0051] There are multiple supporting feet 1244, which are arranged at intervals on one side of the upper block body 1243. The second fixing plate 113 is located between the multiple supporting feet 1244. Due to the existence of the supporting feet 1244, there is a space between the upper block body 1243 and the platform mounting plate 123, and the slave transmission part 1221 and part of the second fixing plate 113 are both located in this space.

[0052] In an embodiment, the guiding kit 1242 is fixed to the block main body 1241 and moves synchronously with the block main body 1241. Specifically, the guiding kit 1242 is arranged on the upper block body 1243 and sleeved on the guiding rod 114 in a sliding manner. To make the guiding and shifting block 124 more stable when sliding, there are multiple guiding kits 1242, which are respectively located on opposite sides of the upper block body 1243. The number of the guiding kits 1242 is set in one-to-one correspondence with the number of the guiding rods 114.

[0053] In another embodiment, the shock absorber 112 can be sleeved on the guiding rod 114. One end of the shock absorber 112 abuts against the wire kit 1242, and the other end abuts against the first fixing plate 111. When the guiding block 124 slides, the shock absorber 112 is compressed. To improve the shock absorption effect of the logistics vehicle, the shock absorbers 112 and the guiding rods 114 are arranged in one-to-one correspondence.

[0054] The guiding rod 114 and the guiding post 121 cooperate with each other, so that when the wheel assembly 12 slides relative to the shock absorption assembly 11, it is more stable, and the impact force of the ground on the wheel assembly 12 is offset to the greatest extent, improving the smoothness of the operation of the logistics vehicle.

[0055] The guiding post 121 is fixedly connected to the wheel member 122, the platform mounting plate 123 and the guiding block 124, and can reciprocate relative to the frame assembly 2 in the up-down direction of the frame assembly 2, thereby reducing the bumpy condition of the logistics vehicle.

[0056] Further combined Figure 8 and Figure 9 As shown, in one embodiment, the driving assembly 13 is connected to the wheel assembly 12 and is used to drive the wheel assembly 12 to move forward or turn. Both the driving assembly 13 and the shock absorption assembly 11 are located inside the frame assembly 2. With this arrangement, damage to the driving assembly 13 is avoided, so that the driving assembly 13 can work stably and safely. At the same time, damage to the shock absorption assembly 11 is also avoided, and the box body can be conveniently fixed on the first fixing plate 111 of the shock absorption assembly 11. The driving assembly 13 can reciprocate relative to the frame assembly 2 along with the wheel assembly 12. When the logistics vehicle passes through a section with poor road conditions, even if there is a bump, the driving assembly 13 can continuously drive the wheel assembly 12 to ensure the stability of the movement of the wheel assembly 12.

[0057] The driving assembly 13 is fixed on the platform mounting plate 123. Both the driving assembly 13 and the shock absorption assembly 11 are located on the same side of the platform mounting plate 123. In the direction from the second fixing plate 113 to the first fixing plate 111, the driving assembly 13 does not exceed the first fixing plate 111, thereby avoiding interference during the installation of the storage compartment. The driving assembly 13 is used to drive the wheel member 122 to turn or move forward. The driving assembly 13 includes a transmission member 131, a driving member 132 and a support frame 133. The transmission member 131 is respectively connected to the driving member 132 and the secondary transmission part 1221, so that the driving member 132 drives the wheel 1222 to rotate or turn through the transmission member 131.

[0058] The transmission member 131 extends between the upper block 1243 and the platform mounting plate 123. The transmission member 131 is preferably a belt structure. With this arrangement, the transmission structure of the drive assembly 13 is simple in design, maintenance and replacement, and can buffer and absorb shock. At the same time, the transmission member 131 of the belt structure has good elasticity and can relieve the impact by slipping when overloaded, avoiding affecting other components.

[0059] In another embodiment, the transmission member 131 can be a gear structure. With this arrangement, the transmission ratio of the drive assembly 13 is constant, the transmission is accurate and stable, and the reliability of the drive assembly 13 is improved. At the same time, the transmission member 131 of the gear structure has a large transmission power and a long service life.

[0060] In one embodiment, the driving member 132 is a motor. The driving member 132 is fixed to the support frame 133 and is spaced from the guide block 124. In the direction from the second fixing plate 113 to the first fixing plate 111, the driving member 132 does not exceed the first fixing plate 111. The support frame 133 is fixed to the platform mounting plate 123, and a space is formed between the support frame 133 and the platform mounting plate 123. Part of the driving member 132 passes through the support frame 133 and is located in this space.

[0061] If the transmission member 131 is in the form of a belt structure, part of the transmission member 131 is located between the support frame 133 and the platform mounting plate 123. If the transmission member 131 is in the form of a gear structure, the transmission member 131 is completely located between the support frame 133 and the platform mounting plate 123.

[0062] In the present application, the drive assembly 13 is fixed on the platform mounting plate 123 and moves together with the wheel assembly 12. The wheel assembly 12 is sleeved on the guide rod 114 through the guide kit 1242, and the guide post 121 passes through the first fixing plate 111, so that the wheel assembly 12 has multiple guides when sliding relative to the shock absorption assembly 11, and the wheel assembly 12 slides more stably. The wheel assembly 12 and the shock absorption assembly 11 are buffered and shock-absorbed by the shock absorption member 112.

[0063] In one embodiment, the wheel mechanism 1 includes a front wheel mechanism 14 and a rear wheel mechanism 15. To make the logistics vehicle run more smoothly, the wheel mechanism 1 is preferably provided with four, that is, both the front wheel mechanism 14 and the rear wheel mechanism 15 are provided with two. The front wheel mechanism 14 can be used for active steering, and the rear wheel mechanism 15 is used for driving forward. With this arrangement, since the direction of the logistics vehicle changes by the same angle as the front wheel mechanism 14 steers, the logistics vehicle is more stable and easier to control when steering.

[0064] In another embodiment, the front wheel mechanism 14 can be used for driving forward, and the rear wheel mechanism 15 is used for active steering. With such an arrangement, when the logistics vehicle changes direction, the required torque is smaller, and it is more labor-saving when turning. In another embodiment, both the front wheel mechanism 14 and the rear wheel mechanism 15 can be used for steering, so that the turning radius of the logistics vehicle is smaller, and the logistics vehicle is more sensitive and easier to control when steering.

[0065] Further combined with Figure 10 As shown, in one embodiment, the frame assembly 2 includes a chassis 21 and a frame 22. The frame 22 is fixed to the chassis 21, and the box body is located inside the frame 22. The shock absorption assembly 11 is fixed to the chassis 21, and the shock absorption assembly 11 and the drive assembly 13 are within the range of the frame 22. Further, the second fixing plate 113 is fixed to the chassis 21, and the drive assembly 13 can reciprocate relative to the chassis 21 along with the wheel assembly 12.

[0066] The logistics vehicle of the present application can be applied in situations such as camping, grocery shopping, and transporting items in factories, thereby helping people transport items and improving the convenience of life and work efficiency.

[0067] By setting the drive assembly 13 in the logistics vehicle of the present application, the logistics vehicle can be self-driven, liberating people's physical strength, improving the safety of the logistics vehicle during travel, and the drive assembly 13 is located inside the frame assembly 2, avoiding damage to the drive assembly 13, so that the drive assembly 13 can work stably and safely. At the same time, through the shock absorber 112 in the shock absorption assembly 11, when the logistics vehicle passes through a section with poor road conditions, the bumps caused by the road conditions can be offset efficiently, protecting the transported items, and the drive assembly 13 can continuously drive the wheel assembly 12, making the logistics vehicle more stable when traveling or turning. And by limiting the downward movement position of the wheel assembly 12 through the second fixing plate 113, the wheel assembly 12 makes a reciprocating movement within a limited distance under the action of the shock absorber 112, thereby reducing the bumpiness of the logistics vehicle, improving the stability of the transported items, and avoiding damage to the items.

Claims

1. A logistics vehicle, characterized in that: include: A wheel mechanism (1) and a frame assembly (2); the wheel mechanism (1) comprises a shock absorbing assembly (11) and a wheel assembly (12); the shock absorbing assembly (11) comprises a first fixing plate (111), a shock absorbing member (112) and a second fixing plate (113); the first fixing plate (111) is used for installing a box body; in the up and down direction of the frame assembly (2), the shock absorbing member (112) is located between the first fixing plate (111) and the second fixing plate (113), and one end of the shock absorbing member (112) contacts the wheel assembly (12) and the other end contacts the first fixing plate (111); the second fixing plate (113) is fixed to the frame assembly (2), and the second fixing plate (113) is used for limiting the downward movement position of the wheel assembly (12).

2. The logistics vehicle according to claim 1, characterized in that: The wheel assembly (12) comprises a guide column (121); the guide column (121) is slidably inserted into the first fixing plate (111); and the shock absorbing component (112) is sleeved on the guide column (121).

3. The logistics vehicle according to claim 1, characterized in that: The vehicle further comprises a driving assembly (13) fixed to the wheel assembly (12); the driving assembly (13) is used to drive the wheel assembly (12) to move forward or turn; in the up and down directions of the frame assembly (2), the driving assembly (13) can reciprocate with the wheel assembly (12) relative to the frame assembly (2).

4. The logistics vehicle according to claim 3, characterized in that: The wheel assembly (12) further comprises a wheel component (122) and a platform mounting plate (123); the wheel component (122) and the driving assembly (13) are arranged on the platform mounting plate (123), and the driving assembly (13) is used to drive the wheel component (122) to turn or move.

5. The logistics vehicle according to claim 4, characterized in that: The wheel assembly (12) further comprises a guide block (124) fixed on the platform mounting plate (123); in the up and down directions of the frame assembly (2), the guide block (124) and the wheel assembly (122) are arranged opposite to each other; a portion of the guide block (124) is slidably located between the first fixing plate (111) and the second fixing plate (113).

6. The logistics vehicle according to claim 5, characterized in that: The guide block (124) includes a block body (1241); the block body (1241) is arranged on the platform mounting plate (123), and one end of the shock absorber (112) contacts the block body (1241); the wheel assembly (12) includes a guide column (121), and one end of the guide column (121) is fixed to the block body (1241).

7. The logistics vehicle according to claim 6, characterized in that: The length of the guide column (121) is greater than the moving stroke of the block body (1241) relative to the second fixing plate (113); the block body (1241) can move downward to contact the second fixing plate (113).

8. The logistics vehicle according to claim 6, characterized in that: The shock absorbing assembly (11) further comprises a guide rod (114); one end of the guide rod (114) is fixed to the first fixing plate (111), and the other end is fixed to the second fixing plate (113); the guide block (124) comprises a guide sleeve (1242) fixed to the block body (1241); the guide sleeve (1242) is slidably sleeved on the guide rod (114).

9. The logistics vehicle according to claim 4, characterized in that: The wheel component (122) comprises a secondary transmission part (1221); the secondary transmission part (1221) is located between the second fixing plate (113) and the platform mounting plate (123); the driving assembly (13) comprises a transmission member (131) and a driving member (132); the transmission member (131) is respectively connected to the driving member (132) and the secondary transmission part (1221).

10. The logistics vehicle according to claim 3, characterized in that: It also includes a box body fixed to the first fixing plate (111); the shock absorbing assembly (11) and the driving assembly (13) are located in the frame assembly (2); and the number of the driving assemblies (13) is arranged in a one-to-one correspondence with the number of the wheel assemblies (12).

Images