Handling vehicle
By combining the eccentric slider with the surface contact drive mechanism of the mating part and the guide mechanism, the problems of swaying and tilting of the scissor lift mechanism of the transport vehicle are solved, and a more stable and flexible transport vehicle design is achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HANGZHOU HIKROBOT TECH CO LTD
- Filing Date
- 2026-01-23
- Publication Date
- 2026-07-30
AI Technical Summary
The scissor lift mechanism of existing pallet trucks is prone to swaying and tilting during movement, which affects operational stability.
The platform adopts a surface contact drive method between the eccentric slider and the mating part. The eccentric slider is driven to switch between different positions by the rotating shaft, so as to realize the lifting and lowering of the carrying platform. Combined with the guide mechanism and transmission components, the stability and flexibility of the platform are ensured.
It improves the operational stability and usage flexibility of the transport vehicle, reduces the equipment height, and expands the applicable scenarios.
Smart Images
Figure CN2026074508_30072026_PF_FP_ABST
Abstract
Description
transport vehicle Technical Field
[0001] This application relates to the field of transportation equipment technology, and more particularly to a handling vehicle. Background Technology
[0002] A pallet truck is a transport vehicle used for short-distance moving of goods and is widely used in industries such as manufacturing, warehousing and logistics, medical care, and retail. Summary of the Invention
[0003] This application discloses a transport vehicle, which includes a chassis, a carrying platform, and a lifting mechanism. The carrying platform is disposed on the chassis, and the lifting mechanism is disposed between the carrying platform and the chassis, and is connected to both the carrying platform and the chassis. The lifting mechanism includes a rotating shaft extending along a first direction, which is rotatably connected to the chassis and can rotate around the first direction. At least one end face of the rotating shaft is provided with a movable member, which is rotatably connected to the end face of the rotating shaft, and the rotation axis of the movable member is parallel to the rotation axis of the rotating shaft. Along a second direction, the movable member has a first position close to the chassis and a second position away from the chassis. The end of the carrying platform close to the chassis is provided with a protruding mating part, which fits against the movable member. When the rotating shaft is rotating, the movable member switches between the first position and the second position to drive the carrying platform to move up and down along the second direction. The first direction is parallel to the surface of the chassis, and the second direction is perpendicular to the surface of the chassis.
[0004] The technical solution adopted in this application can achieve the following technical effects:
[0005] The transport vehicle disclosed in this application can achieve lifting and moving of the carrying platform by switching between a first position and a second position during the rotation of the moving part driven by the rotating shaft. Since the moving part of the lifting mechanism and the cooperating part of the carrying platform are driven by surface contact, it is not easy to have problems such as shaking or deflection, thereby improving the stability of the transport vehicle. Moreover, the lifting mechanism has a simple structure and does not require much installation space, thereby reducing the height of the transport vehicle and making the transport vehicle applicable to a wider range of scenarios, thus improving the flexibility of the transport vehicle. Attached Figure Description
[0006] Figure 1 is a schematic diagram of the assembly structure of the chassis and lifting mechanism disclosed in the embodiment of this application;
[0007] Figure 2 is a schematic diagram of the structure of the carrier platform disclosed in an embodiment of this application;
[0008] Figure 3 is a schematic diagram of the assembly structure of the chassis, bearing platform and lifting mechanism disclosed in the embodiments of this application;
[0009] Figure 4 is a schematic diagram of the eccentric slider in the first position as disclosed in the embodiment of this application;
[0010] Figure 5 is a schematic diagram of the eccentric slider in the second position as disclosed in the embodiment of this application;
[0011] Figure 6 is one of the structural schematic diagrams of the transport vehicle disclosed in the embodiments of this application;
[0012] Figure 7 is a second schematic diagram of the structure of the transport vehicle disclosed in the embodiments of this application;
[0013] Figure 8 is a schematic diagram of the bearing in the first position as disclosed in the embodiment of this application;
[0014] Figure 9 is a schematic diagram of the bearing in the second position as disclosed in the embodiment of this application. Explanation of reference numerals:
[0015] 100 - Chassis, 101 - First Direction, 102 - Second Direction, 103 - Third Direction, 110 - Chassis Body, 120 - First Steering Wheel, 130 - Second Steering Wheel, 140 - First Running Wheel, 150 - Second Running Wheel, 160 - Floating Beam
[0016] 200-Bearing platform, 210-Matching part, 211-Slide groove,
[0017] 300-Lifting mechanism, 310-Rotating shaft, 320-Eccentric slider, 330-Drive source, 340-Transmission assembly, 341-Reducer, 342-First gear, 343-Second gear, 350-Bearing
[0018] 400 - Guide mechanism, 410 - Sleeve, 420 - Sliding column
[0019] 500 - Housing. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more.
[0022] In related technologies, to enable a pallet truck to pick up and place goods, a liftable platform is installed on the truck, which is controlled by a scissor lift mechanism. However, scissor lift mechanisms are usually composed of multiple stacked cross links, making their structure relatively complex. During the movement of the pallet truck, the scissor lift mechanism is prone to swaying and tilting, which in turn affects the stability of the pallet truck's operation.
[0023] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.
[0024] Please refer to Figures 1 to 7. This application discloses a transport vehicle, which may include a chassis 100, a carrying platform 200, and a lifting mechanism 300. The chassis 100 is the basic part of the transport vehicle, supporting the upper lifting mechanism 300 and the carrying platform 200, and enabling corresponding movement and steering functions. The transport vehicle can be an AGV (Automated Guided Vehicle), which refers to a transport device equipped with electromagnetic or optical automatic guidance devices, capable of traveling along a prescribed guidance path, and possessing safety protection and various transfer functions; furthermore, the transport vehicle can also perform corresponding actions remotely.
[0025] The carrying platform 200 is mounted on the chassis 100 and is mainly used to carry goods. To facilitate the loading, unloading, and handling of goods, the carrying platform 200 can be designed to be height-adjustable. A lifting mechanism 300 can be installed between the carrying platform 200 and the chassis 100. The lifting mechanism 300 is connected to both the carrying platform 200 and the chassis 100, enabling the carrying platform 200 to be lifted and moved.
[0026] Define the first direction 101 as parallel to the surface of the chassis 100, and the second direction 102 as perpendicular to the surface of the chassis 100. It should be noted that the surface of the chassis 100 is the surface of the chassis 100 near the support platform 200. The surface of the chassis 100 can be approximated as a plane. The surface is mainly used to support the upper lifting mechanism 300 and the support platform 200. Considering that the support platform 200 will also be parallel to the surface of the chassis 100 during actual installation, the first direction 101 can also be parallel to the support platform 200, and the second direction 102 can also be perpendicular to the support platform 200.
[0027] As shown in Figures 1 to 5, the specific structures of the lifting mechanism 300 and the supporting platform 200 are described in conjunction with the first direction 101 and the second direction 102. The lifting mechanism 300 may include a rotating shaft 310 extending along the first direction 101. A protruding mounting bracket may be provided on the surface of the chassis 100. The rotating shaft 310 is mounted on the mounting bracket and rotatably connected to the chassis 100. The rotating shaft 310 can rotate relative to the chassis 100 about the first direction 101, which can be the axial direction of the rotating shaft 310. The rotating shaft 310 has two opposite end faces along the first direction 101. At least one end face of the rotating shaft 310 is provided with a moving element, such as an eccentric slider 320. The eccentric slider 320 may be rotatably connected to the end face of the rotating shaft 310, for example, through a connecting shaft. The rotation axis of the eccentric slider 320 is parallel to the rotation axis of the rotating shaft 310, and the rotation axes of the two are spaced apart by a preset distance.
[0028] Along the second direction 102, when the pivot 310 rotates about the first direction 101, the eccentric slider 320 performs an eccentric movement, and the eccentric slider 320 has a first position close to the chassis 100 and a second position away from the chassis 100. Correspondingly, a protruding mating part 210 is provided at one end of the support platform 200 near the chassis 100. The mating part 210 has a support plane facing the eccentric slider 320. Similarly, the eccentric slider 320 also has a support plane facing the mating part 210, and the two can be fitted together through the support planes.
[0029] With the rotating shaft 310 in operation, the eccentric slider 320 switches between a first position and a second position, as shown in Figure 4. In the first position, the support platform 200 is in a low position (close to the chassis 100), as shown in Figure 5. The rotating shaft 310 then rotates, causing the eccentric slider 320 to switch to the second position, where the support platform 200 is in a high position (away from the chassis 100). This allows the eccentric slider 320 to drive the support platform 200 to move up and down along the second direction 102 via the mating part 210. When it is desired that the support platform 200 remain in a low position, the eccentric slider can be controlled to stay in the first position; when it is desired that the support platform 200 remain in a high position, the eccentric slider can be controlled to stay in the second position.
[0030] It should be noted that, with the rotating shaft 310 in motion and the chassis 100 as a reference, the motion of the eccentric slider 320 can be roughly divided into three parts. First, the eccentric slider 320 moves up and down along the second direction 102, and this movement directly drives the mating part 210 and the supporting platform 200 to move up and down. Second, defining a third direction 103 parallel to the surface of the chassis 100 and perpendicular to the first direction 101, the motion of the eccentric slider 320 also includes translation along the third direction 103. For this motion, to avoid the eccentric slider 320 driving the supporting platform 200... 0. Along with the translation along the third direction 103, the eccentric slider 320 can slide relative to the mating part 210 along the third direction 103. In a specific implementation, a limiting mechanism can be set on the chassis 100 to restrict the translation of the bearing platform 200 along the third direction 103, so that the bearing platform 200 can only move up and down in the second direction 102. Thirdly, the eccentric slider 320 will also rotate relative to the end face of the rotating shaft 310. By rotating, the eccentric slider 320 can ensure that its own supporting plane can always be in contact with the supporting plane of the mating part 210, thereby providing stable support for the bearing platform 200.
[0031] To ensure the stability of the support platform 200 during the lifting process, the setting position, size and other parameters of the eccentric slider 320 and the mating part 210 can be selected according to the center of gravity of the support platform 200, so that the center of gravity of the support platform 200 always falls on the contact area between the eccentric slider 320 and the mating part 210, thereby preventing the support platform 200 from tilting.
[0032] As described above, the transport vehicle disclosed in this application adopts the aforementioned lifting mechanism 300. Since the lifting mechanism 300 and the carrying platform 200 are driven through surface contact, the problem of shaking or tilting is not likely to occur, thereby improving the stability of the transport vehicle's operation. Moreover, the lifting mechanism 300 has a simple structure and does not require much installation space, thereby reducing the height of the transport vehicle and making the transport vehicle applicable to a wider range of scenarios, thus improving the flexibility of the transport vehicle's use.
[0033] As shown in Figures 1 to 5, considering that the eccentric slider 320 and the mating part 210 will slide relative to each other along the third direction 103, a groove 211 can be provided on the mating part 210 to improve stability during the relative sliding process. The groove 211 extends along the third direction 103, and at least a portion of the eccentric slider 320 can extend into the groove 211 and slide in connection with it. To ensure stable engagement between the eccentric slider 320 and the groove 211, at least one end face of the eccentric slider 320 can be in contact with the groove wall of the groove 211. For example, the eccentric slider 320 has an upper end face and a lower end face distributed opposite to each other along the second direction 102, and the upper and lower end faces can respectively be in contact with the groove wall of the groove 211. During the relative sliding process between the eccentric slider 320 and the groove 211, the supporting platform 200 is less prone to sliding or tilting, thereby improving the stability of the lifting and lowering of the supporting platform 200.
[0034] As shown in Figures 1 to 5, eccentric sliders 320 are provided at both ends of the rotating shaft 310 along the first direction 101. Correspondingly, two mating parts 210 are provided on the side of the support platform 200 near the chassis 100, and the two mating parts 210 respectively engage with the eccentric sliders 320 at both ends of the rotating shaft 310. The advantage of this design is that it increases the contact area between the lifting mechanism 300 and the support platform 200, thereby improving the stability and load-bearing capacity of the support platform 200. It should be noted that, in order to prevent the support platform 200 from tilting during the lifting process, it is necessary to ensure that the eccentric sliders 320 at both ends of the rotating shaft 310 rotate synchronously so that the eccentric sliders 320 at both ends of the rotating shaft 310 can simultaneously contact and engage with the corresponding mating parts 210. In some embodiments, the eccentric sliders are nylon sliders.
[0035] In addition, in some embodiments, in order to avoid interference between the rotating shaft 310 and the support platform 200, when setting the eccentric slider 320, an extension can be provided on the end face of the rotating shaft 310. The extension extends radially along the rotating shaft 310, and the eccentric slider 320 can be rotatably connected to the extension via a connecting shaft.
[0036] As shown in Figure 1, the transport vehicle may also include a drive source 330 and a transmission assembly 340. The drive source 330 may be a motor, a rotary cylinder, etc. The drive source 330 is connected to the chassis 100. The transmission assembly 340 may be a connecting rod, a transmission chain, a transmission belt, etc. The power input end of the transmission assembly 340 is connected to the output end of the drive source 330, and the power output end of the transmission assembly 340 is connected to the rotating shaft 310 to drive the rotating shaft 310 to rotate around the first direction 101, thereby driving the eccentric slider 320 to switch between the first position and the second position, and then driving the carrying platform 200 to move up and down along the second direction 102.
[0037] In an optional embodiment of this application, as shown in FIG1, the transmission assembly 340 may include a reducer 341, a first gear 342, and a second gear 343. The main function of the reducer 341 is to reduce the rotational speed of the drive source 330 and increase the torque. The input end of the reducer 341 is connected to the output end of the drive source 330, and the output end of the reducer 341 is fixedly connected to the first gear 342. The reducer 341 can drive the first gear 342 to rotate synchronously. The second gear 343 is sleeved outside the rotating shaft 310 and is fixedly connected to the rotating shaft 310 so that the second gear 343 can rotate synchronously with the rotating shaft 310. To avoid interference between the second gear 343 and the eccentric slider 320, the second gear 343 can be positioned near the middle of the rotating shaft 310. The first gear 342 and the second gear 343 mesh with each other. When the drive source 330 rotates, it drives the first gear 342 to rotate through the reducer 341. The first gear 342 transmits power to the second gear 343 through meshing transmission, which in turn drives the rotating shaft 310 to rotate, thereby causing the eccentric slider 320 to switch between the first position and the second position, and thus driving the carrying platform 200 to move up and down along the second direction 102. In this embodiment, since the transmission component 340 has a simple structure and occupies less space, it is beneficial to reduce the size of the transport vehicle.
[0038] In an optional embodiment of this application, the transport vehicle may further include two lifting mechanisms 300, which may be respectively installed at different positions between the chassis 100 and the carrying platform 200 to further improve the stability and load capacity of the carrying platform 200. The carrying platform 200 has a first carrying part and a second carrying part arranged adjacent to each other. For example, taking a rectangular carrying platform 200 as an example, it can be divided into a first carrying part and a second carrying part along the center line or diagonal of the carrying platform 200. The end of the first carrying part near the chassis 100 and the end of the second carrying part near the chassis 100 are both provided with a mating part 210. The number of mating parts 210 on the first carrying part and the second carrying part can be one or two, which can be selected according to the number of eccentric sliders 320.
[0039] With the corresponding rotating shafts 310 of the two lifting mechanisms 300 rotating synchronously, the eccentric slider 320 of each lifting mechanism 300 can cooperate with the corresponding mating part 210, thereby jointly driving the support platform 200 to move up and down along the second direction 102. It should be noted that, in order to avoid the support platform 200 tilting during the lifting process, it is necessary to ensure that the corresponding rotating shafts 310 of the two lifting mechanisms 300 rotate synchronously, and that the movement state of the corresponding eccentric sliders 320 of the two lifting mechanisms 300 also remains synchronous.
[0040] In a specific embodiment of this application, as shown in Figures 1, 4 and 5, each lifting mechanism 300 has an eccentric slider 320 at both ends of its rotating shaft 310. Correspondingly, the first bearing part has two mating parts 210 that mate with one of the rotating shafts 310, and the second bearing part also has two mating parts 210 that mate with the other rotating shaft 310. Furthermore, each mating part 310 has a groove 211 extending along a third direction 103. At least a portion of the eccentric slider 320 can extend into the groove 211 and slide in connection with the groove 211.
[0041] The two lifting mechanisms 300 described above can be driven individually or through the same drive source 330. In an optional embodiment of this application, as shown in FIG1, the two lifting mechanisms 300 can be driven through the same drive source 330. The drive source 330 and the transmission assembly 340 are disposed between the two lifting mechanisms 300. The power input end of the transmission assembly 340 is connected to the drive source 330, and the power output end of the transmission assembly 340 is connected to the corresponding rotating shaft 310 of each of the two lifting mechanisms 300, thereby driving the two rotating shafts 310 to rotate synchronously, thus ensuring that the movement state of the corresponding eccentric sliders 320 of the two lifting mechanisms 300 remains synchronized.
[0042] To enable the support platform 200 to rise and fall stably in the second direction 102, a guide mechanism 400 can be provided between the chassis 100 and the support platform 200. The guide mechanism 400 can extend along the second direction 102 and may include a telescopic rod, a lifting slide rail, etc. In an optional embodiment of this application, as shown in Figures 4 and 5, the guide mechanism 400 may include a sleeve 410 and a sliding column 420. The first end of the sleeve 410 is connected to the chassis 100, and the specific connection method may be bolt connection, welding, etc. The second end of the sleeve 410 is an open end, and the sliding column 420 can extend into the interior of the sleeve 410 through the second end of the sleeve 410. The sliding column 420 and the sleeve 410 can slide relative to each other along the second direction 102. The end of the sliding column 420 away from the sleeve 410 is connected to the support platform 200, and the specific connection method may be bolt connection, welding, etc. When the support platform 200 is raised and lowered along the second direction 102, the sliding column 420 and the sleeve 410 also slide relative to each other along the second direction 102. By using the limiting cooperation between the sliding column 420 and the sleeve 410, the raising and lowering posture of the support platform 200 can be constrained, making its raising and lowering process more stable. In addition, the guide mechanism 400 can also restrict the movement of the support platform 200 along the third direction 103, so that relative sliding can occur between the slide groove 211 and the eccentric slider 320.
[0043] In one optional embodiment of this application, the number of guide mechanisms 400 can be multiple, such as three, four, or five. These multiple guide mechanisms 400 can be arranged at intervals along the edge of the support platform 200 to provide guidance at different positions on the support platform 200. It should be noted that the surface of the support platform 200 facing the chassis 100 has an edge, which is the aforementioned edge of the support platform 200. The shape of the edge of the support platform 200 can be rectangular, circular, elliptical, etc. For example, taking a rectangular support platform 200 as an example, guide mechanisms 400 can be provided at all four corners of the support platform 200 to achieve stable guidance.
[0044] As shown in Figures 1 and 3, the chassis 100 may include a chassis body 110, a first steering wheel 120, a second steering wheel 130, a first traveling wheel 140, and a second traveling wheel 150. The first steering wheel 120 and the first traveling wheel 140 are rotatably disposed at the front end of the chassis body 110, and the second steering wheel 130 and the second traveling wheel 150 are rotatably disposed at the rear end of the chassis body 110. It should be noted that the front and rear ends of the chassis body 110 can be the two ends of the chassis body 110 along its length. The first steering wheel 120 and the second steering wheel 130 are drive wheels, mainly used to realize the walking and steering functions of the transport vehicle, while the first traveling wheel 140 and the second traveling wheel 150 are driven wheels, mainly used to provide support. The first steering wheel 120, the second steering wheel 130, and the lifting mechanism 300 can be powered by a battery, which can be installed on the surface of the chassis 100.
[0045] As shown in Figures 1 to 3, a floating beam 160 is also provided on the chassis 100. The middle part of the floating beam 160 is rotatably mounted to the rear end of the chassis body 110 via a connecting shaft. The second steering wheel 130 and the second traveling wheel 150 are rotatably mounted at opposite ends of the floating beam 160. By setting the floating beam 160, the contact state between the second steering wheel 130 and the second traveling wheel 150 and the ground can be dynamically adjusted, enabling the transport vehicle to adapt to various complex road conditions. The floating beam floats according to the undulations of the ground, ensuring that both wheels on both sides can make contact with the ground, thus ensuring that all wheels of the vehicle can effectively make contact with the ground. For example, when there are potholes on the ground, the floating beam allows the second steering wheel and / or the second traveling wheel to float downwards, always maintaining contact with the ground; when there are protrusions on the ground, the floating beam allows the second steering wheel and / or the second traveling wheel to float upwards, always maintaining contact with the ground.
[0046] In some embodiments, the chassis 100 is provided with four steering wheels, wherein the two steering wheels at the front end are fixed and the two steering wheels at the rear end are disposed on the floating beam.
[0047] As shown in Figures 6 and 7, the transport vehicle may also include a housing 500, which is mounted on top of the chassis 100. The housing 500 and chassis 100 can be assembled by snap-fit, bolt connection, etc. The housing 500 can protect the components mounted on the chassis 100. The housing 500 also has an opening, and the carrying platform 200 is disposed in the opening and fits with the edge of the opening with a clearance. In addition, the side of the housing 500 is also provided with components such as a charging interface, a control switch, indicator lights, and sensors. The charging interface is used to charge the built-in battery, the bicycle control switch is used to control the opening and closing of the transport vehicle, the indicator lights can indicate the working status of the transport vehicle, and the sensors are used to realize the movement, obstacle avoidance, and other functions of the transport vehicle.
[0048] Some embodiments of this application also provide a transport vehicle, as shown in Figures 8 and 9. The difference from the above embodiments is that the moving part is replaced with a rolling bearing; other details are as described above and will not be repeated here.
[0049] During the rotation of the rotating shaft, the moving parts switch between the first and second positions, thereby realizing the lifting and moving of the carrying platform. Since the moving parts of the lifting mechanism and the cooperating parts of the carrying platform are driven by surface contact, it is not easy to have problems such as shaking or tilting, thus improving the stability of the transport vehicle. Moreover, the lifting mechanism has a simple structure and does not require much installation space, thereby reducing the height of the transport vehicle and making the transport vehicle applicable to a wider range of scenarios, thus improving the flexibility of the transport vehicle.
[0050] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.
[0051] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A transport vehicle, comprising a chassis (100), a carrying platform (200), and a lifting mechanism (300); The carrying platform (200) is mounted on the chassis (100), and the lifting mechanism (300) is located between the carrying platform (200) and the chassis (100), and is connected to the carrying platform (200) and the chassis (100) respectively. The lifting mechanism (300) includes a rotating shaft (310) extending along a first direction (101), the rotating shaft (310) being rotatably connected to the chassis (100) and rotatable about the first direction (101), and a movable member being provided on at least one end face of the rotating shaft (310), the movable member being rotatably connected to the end face of the rotating shaft (310), and the rotation axis of the movable member being parallel to the rotation axis of the rotating shaft (310); Along the second direction (102), the movable member has a first position close to the chassis (100) and a second position away from the chassis (100), and the bearing platform (200) has a protruding mating part (210) at one end close to the chassis (100), and the mating part (210) fits against the movable member. When the pivot (310) is rotating, the moving member switches between the first position and the second position to drive the support platform (200) to move up and down along the second direction (102); in, The first direction (101) is parallel to the surface of the chassis (100), and the second direction (102) is perpendicular to the surface of the chassis (100).
2. The transport vehicle according to claim 1, wherein, The mating part (210) is provided with a sliding groove (211), the sliding groove (211) extends along a third direction (103), at least a portion of the moving member extends into the sliding groove (211) and is slidably connected with the sliding groove (211), and at least one end face of the moving member is in contact with the groove wall of the sliding groove (211). The third direction (103) is parallel to the surface of the chassis (100) and perpendicular to the first direction (101).
3. The transport vehicle according to claim 1 or 2, wherein, The rotating shaft (310) has the moving parts at both ends along the first direction (101), and the bearing platform (200) has two mating parts (210) on the side near the chassis (100), and the two mating parts (210) respectively correspond to the moving parts at both ends of the rotating shaft (310) and fit together.
4. The transport vehicle according to any one of claims 1 to 3 further includes a drive source (330) and a transmission assembly (340); The drive source (330) is connected to the chassis (100), the power input end of the transmission assembly (340) is connected to the drive source (330), and the power output end of the transmission assembly (340) is connected to the rotating shaft (310) to drive the rotating shaft (310) to rotate.
5. The transport vehicle according to claim 4, wherein, The transmission assembly (340) includes a reducer (341), a first gear (342), and a second gear (343); The input end of the reducer (341) is connected to the drive source (330), the first gear (342) is fixedly connected to the output end of the reducer (341), the second gear (343) is sleeved outside the rotating shaft (310) and fixedly connected to the rotating shaft (310), and the first gear (342) and the second gear (343) mesh with each other.
6. The transport vehicle according to claim 4 or 5, wherein, The transport vehicle includes two lifting mechanisms (300). The carrying platform (200) has a first carrying part and a second carrying part arranged adjacent to each other. The two lifting mechanisms (300) are respectively arranged corresponding to the first carrying part and the second carrying part. The end of the first carrying part near the chassis (100) and the end of the second carrying part near the chassis (100) are provided with a mating part (210). The two mating parts (210) are respectively used to cooperate with the moving parts of the corresponding lifting mechanism (300).
7. The transport vehicle according to claim 6, wherein, The drive source (330) and the transmission assembly (340) are located between the two lifting mechanisms (300). The power output end of the transmission assembly (340) is connected to the corresponding rotating shaft (310) of each of the two lifting mechanisms (300) to drive the two rotating shafts (310) to rotate synchronously.
8. The transport vehicle according to any one of claims 1 to 7 further includes a guiding mechanism (400), the guiding mechanism (400) extending along the second direction (102) and connected to the chassis (100) and the carrying platform (200) respectively.
9. The transport vehicle according to claim 8, wherein, The guide mechanism (400) includes a sleeve (410) and a sliding post (420). The first end of the sleeve (410) is connected to the chassis (100), and the second end of the sleeve (410) is an open end. The sliding post (420) extends into the interior of the sleeve (410) through the second end and slides relative to the sleeve (410) along the second direction (102). The end of the sliding post (420) away from the sleeve (410) is connected to the bearing platform (200).
10. The transport vehicle according to claim 8 or 9, wherein, The transport vehicle includes a plurality of the guide mechanisms (400), which are arranged at intervals along the edge of the carrying platform (200).
11. The transport vehicle according to any one of claims 1 to 10, wherein, The chassis (100) includes a chassis body (110), a first steering wheel (120), a second steering wheel (130), a first running wheel (140), and a second running wheel (150). The first steering wheel (120) and the first running wheel (140) are rotatably disposed at the front end of the chassis body (110), and the second steering wheel (130) and the second running wheel (150) are rotatably disposed at the rear end of the chassis body (110).
12. The transport vehicle according to claim 11, wherein, The chassis (100) also includes a floating beam (160), the middle part of which is rotatably mounted to the rear end of the chassis body (110) via a connecting shaft, and the second steering wheel (130) and the second traveling wheel (150) are rotatably disposed at opposite ends of the floating beam (160).
13. The transport vehicle according to any one of claims 1 to 12, further comprising a housing (500) covering and mounted on the chassis (100), the housing (500) having an opening, and the carrying platform (200) being disposed in the opening.
14. The transport vehicle according to any one of claims 1 to 13, wherein, The moving part is an eccentric slider (320) or a rolling bearing (350).