Carrying vehicle

Abstract

The utility model discloses a carrier. The carrier comprises a chassis, a bearing platform and a lifting mechanism. The lifting mechanism is arranged between the bearing platform and the chassis and comprises a rotating shaft extending in the first direction, the rotating shaft can rotate in the first direction, at least one end face of the rotating shaft is provided with an eccentric sliding block, the eccentric sliding block is rotationally connected with the end face of the rotating shaft, and the rotating axis of the eccentric sliding block is parallel to the rotating axis of the rotating shaft. The end, close to the chassis, of the bearing platform is provided with a protruding matching part, and the matching part is attached to the eccentric sliding block. Under the condition that the rotating shaft rotates, the eccentric sliding block can be switched between the first position close to the chassis and the second position away from the chassis, and then the bearing platform can be driven to ascend and descend in the second direction. By the adoption of the lifting mechanism, the structure is simple, driving is achieved between the lifting mechanism and the bearing platform in a surface contact mode, and therefore the running stability of the carrier is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transportation equipment, in particular to a trolley. BACKGROUND

[0002] The trolley is a kind of transportation carrier for short-distance carrying goods, which is widely used in manufacturing, warehousing logistics, medical treatment, retail and other industries.

[0003] In the related art, in order to enable the trolley to realize the taking and placing functions of goods, a liftable loading platform is arranged on the trolley, and the loading platform is controlled by a scissor type lifting mechanism. However, the scissor type lifting mechanism is usually stacked by a plurality of cross linkages, and the structure is relatively complex. During the movement of the trolley, the scissor type lifting mechanism is prone to shaking and deflection, thereby affecting the stability of the trolley operation. CONTENT OF THE UTILITY MODEL

[0004] The present application discloses a trolley and a trolley system to solve the problem of poor trolley operation stability caused by the shaking and deflection of the lifting mechanism in the related art.

[0005] In order to solve the above technical problems, the present application is implemented as follows:

[0006] The present application discloses a trolley, which comprises a chassis, a bearing platform and a lifting mechanism.

[0007] The bearing platform is arranged on the chassis, the lifting mechanism is arranged between the bearing platform and the chassis, and is connected to the bearing platform and the chassis respectively.

[0008] The lifting mechanism comprises a rotating shaft extending in a first direction, the rotating shaft is rotatably connected to the chassis and can rotate around the first direction, at least one end surface of the rotating shaft is provided with an eccentric sliding block, the eccentric sliding block is rotatably connected to the end surface of the rotating shaft, and the rotation axis of the eccentric sliding block is parallel to the rotation axis of the rotating shaft.

[0009] In a second direction, the eccentric sliding block has a first position close to the chassis and a second position away from the chassis, one end of the bearing platform close to the chassis is provided with a protruding matching part, and the matching part and the eccentric sliding block are mutually attached.

[0010] In the case that the rotating shaft is rotated, the eccentric sliding block switches between the first position and the second position to drive the bearing platform to move up and down in the second direction.

[0011] The first direction is parallel to the disc surface of the chassis, and the second direction is perpendicular to the disc surface of the chassis.

[0012] The technical scheme adopted in the application can achieve the following technical effects:

[0013] The carrying vehicle disclosed in the embodiments of the application improves the related art. In the process of rotating the eccentric sliding block driven by the rotating shaft, the eccentric sliding block is switched between the first position and the second position, that is, the lifting movement of the bearing platform is realized. Since the eccentric sliding block of the lifting mechanism and the matching part of the bearing platform are driven in a surface contact manner, the problems of shaking and deflection are less likely to occur, thereby improving the stability of the carrying vehicle in operation. Moreover, the lifting mechanism has a simple structure and does not need to occupy much installation space, thereby reducing the height of the carrying vehicle, making the application scenarios of the carrying vehicle more extensive, and further improving the use flexibility of the carrying vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The figure is a schematic view of the assembly structure of the chassis and the lifting mechanism disclosed in the embodiments of the application.

[0015] Figure 2 The figure is a schematic view of the structure of the bearing platform disclosed in the embodiments of the application.

[0016] Figure 3 The figure is a schematic view of the assembly structure of the chassis, the bearing platform and the lifting mechanism disclosed in the embodiments of the application.

[0017] Figure 4 The figure is a schematic view of the eccentric sliding block in the first position disclosed in the embodiments of the application.

[0018] Figure 5 The figure is a schematic view of the eccentric sliding block in the second position disclosed in the embodiments of the application.

[0019] Figure 6 The figure is one of the schematic views of the structure of the carrying vehicle disclosed in the embodiments of the application.

[0020] Figure 7 The figure is another of the schematic views of the structure of the carrying vehicle disclosed in the embodiments of the application.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 100-chassis, 101-first direction, 102-second direction, 103-third direction, 110-chassis body, 120-first rudder wheel, 130-second rudder wheel, 140-first walking wheel, 150-second walking wheel, 160-floating beam,

[0023] 200-bear platform, 210-matching part, 211-slotted,

[0024] 300-lifting mechanism, 310-rotating shaft, 320-eccentric slider, 330-driving source, 340-transmission assembly, 341-reducer, 342-first gear, 343-second gear,

[0025] 400-guiding mechanism, 410-sleeve, 420-sliding column

[0026] 500-housing. DETAILED DESCRIPTION

[0027] For the purpose, technical solutions and advantages of the present application to be clearer, the technical solutions of the present application will be described clearly and completely below in combination with the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0028] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and are not limited to the number of objects, for example, the first object can be one or more.

[0029] The technical solutions disclosed in the various embodiments of the present application will be described in detail below in combination with the drawings.

[0030] Please refer to Figures 1 to 7 The embodiments of the present application disclose a trolley, which can include a chassis 100, a carrying platform 200 and a lifting mechanism 300. Among them, the chassis 100 is the basic part of the trolley, which is used to support the upper lifting mechanism 300 and the carrying platform 200, and realize the corresponding movement, steering function. The trolley can be an AGV (Automated Guided Vehicle, automatic guided vehicle), which refers to a transportation device equipped with electromagnetic or optical automatic guiding device, which can travel along the specified guiding path, has safety protection and various transfer functions; in addition, the trolley can also execute corresponding actions through remote control.

[0031] The bearing platform 200 is arranged on the chassis 100 and is mainly used for bearing goods. In order to facilitate the taking, placing and carrying of the goods, the bearing platform 200 can be designed to be liftable. Specifically, a lifting mechanism 300 can be arranged between the bearing platform 200 and the chassis 100, and the lifting mechanism 300 is connected with the bearing platform 200 and the chassis 100 respectively, so as to realize the lifting movement of the bearing platform 200.

[0032] The first direction 101 is defined as parallel to the disc surface of the chassis 100, and the second direction 102 is defined as perpendicular to the disc surface of the chassis 100. It should be noted that the disc surface of the chassis 100 is the surface of the chassis 100 close to the bearing platform 200, and the disc surface of the chassis 100 can be approximately planar, and the disc surface is mainly used for supporting the lifting mechanism 300 and the bearing platform 200 on the upper part. Considering that the bearing platform 200 is also parallel to the disc surface of the chassis 100 during actual installation, the first direction 101 can also be parallel to the bearing platform 200, and the second direction 102 can also be perpendicular to the bearing platform 200.

[0033] As shown in Figures 1 to 5 , the specific structure of the lifting mechanism 300 and the bearing platform 200 is described in combination with the first direction 101 and the second direction 102. The lifting mechanism 300 can include a rotating shaft 310 extending along the first direction 101. A raised mounting bracket can be arranged on the disc surface of the chassis 100, and the rotating shaft 310 is arranged on the mounting bracket and is rotationally connected with the chassis 100. The rotating shaft 310 can rotate relative to the chassis 100 about the first direction 101, and the first direction 101 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 an eccentric sliding block 320. The eccentric sliding block 320 is rotationally connected with the end face of the rotating shaft 310 through a connecting shaft, and the rotation axis of the eccentric sliding block 320 is parallel to the rotation axis of the rotating shaft 310. The rotation axes of the two are spaced apart by a preset distance.

[0034] In the case where the rotating shaft 310 rotates about the first direction 101, the eccentric sliding block 320 moves eccentrically along the second direction 102, and the eccentric sliding block 320 has a first position close to the chassis 100 and a second position away from the chassis 100. Correspondingly, one end of the bearing platform 200 close to the chassis 100 is provided with a raised matching part 210, and the matching part 210 has a support plane facing the eccentric sliding block 320. Similarly, the eccentric sliding block 320 also has a support plane facing the matching part 210, and the two can be attached to each other through the support planes.

[0035] In the case where the rotating shaft 310 rotates, the eccentric sliding block 320 switches between the first position and the second position, as Figure 4As shown, the eccentric slider 320 is in the first position, at this time, the carrying platform 200 is in the low position (close to the chassis 100), as shown in the figure Figure 5 As shown, the rotating shaft 310 rotates and drives the eccentric slider 320 to switch to the second position, at this time, the carrying platform 200 is in the high position (far away from the chassis 100), so that the eccentric slider 320 can drive the carrying platform 200 to move up and down along the second direction 102 through the matching part 210.

[0036] It should be noted that, in the case of rotating the rotating shaft 310, with the chassis 100 as the reference, the motion state of the eccentric slider 320 can be generally divided into three parts, one is that the eccentric slider 320 moves up and down along the second direction 102, the up and down movement of the eccentric slider 320 can directly drive the matching part 210 and the carrying platform 200 to move up and down; second, define the third direction 103 parallel to the disc surface of the chassis 100 and perpendicular to the first direction 101, the motion state of the eccentric slider 320 also includes translation along the third direction 103, in order to avoid the eccentric slider 320 driving the carrying platform 200 to move along the third direction 103, the eccentric slider 320 can slide along the third direction 103 relative to the matching part 210, in a specific implementation manner, a limiting mechanism can be arranged on the chassis 100 to limit the translation of the carrying platform 200 along the third direction 103, so that the carrying platform 200 can only move up and down along the second direction 102; third, the eccentric slider 320 will also rotate relative to the end surface of the rotating shaft 310, through the rotation of the eccentric slider 320, the support plane of the eccentric slider 320 can always be matched with the support plane of the matching part 210, so as to stably support the carrying platform 200.

[0037] In order to ensure the stability of the carrying platform 200 during lifting, the setting position, size and other parameters of the eccentric slider 320 and the matching part 210 can be selected according to the center of gravity of the carrying platform 200, so that the center of gravity of the carrying platform 200 always falls on the contact area of the eccentric slider 320 and the matching part 210, thereby avoiding the deflection of the carrying platform 200.

[0038] As described above, the carrying vehicle of the embodiment disclosed in the application improves the related art, by using the lifting mechanism 300 described above, since the lifting mechanism 300 and the carrying platform 200 are driven by face contact, the problem of shaking and deflection is less likely to occur, thereby improving the stability of the carrying vehicle in operation; moreover, the structure of the lifting mechanism 300 is simple, without occupying much installation space, thereby reducing the height of the carrying vehicle, making the application scenarios of the carrying vehicle more extensive, and further improving the use flexibility of the carrying vehicle.

[0039] As shown in the figure Figures 1 to 5As shown, in order to improve the stability during the relative sliding of the eccentric sliding block 320 and the matching portion 210 along the third direction 103, a sliding groove 211 can be arranged on the matching portion 210, the sliding groove 211 extends along the third direction 103, and at least part of the eccentric sliding block 320 can extend into the sliding groove 211 and be in sliding connection with the sliding groove 211. In order to enable the eccentric sliding block 320 to stably match with the sliding groove 211, at least one end surface of the eccentric sliding block 320 can be in close contact with the groove wall of the sliding groove 211. For example, the eccentric sliding block 320 has an upper end surface and a lower end surface which are distributed in opposite directions along the second direction 102, and the upper end surface and the lower end surface can be in close contact with the groove wall of the sliding groove 211, respectively. During the relative sliding of the eccentric sliding block 320 and the sliding groove 211, the bearing platform 200 is not prone to sliding and deflection, thereby improving the stability of the lifting of the bearing platform 200.

[0040] As shown in FIG. 1, Figures 1 to 5 Both ends of the rotating shaft 310 along the first direction 101 are provided with eccentric sliding blocks 320. Correspondingly, one end of the bearing platform 200 close to the chassis 100 is provided with two matching portions 210, and the two matching portions 210 are in close contact with the eccentric sliding blocks 320 at both ends of the rotating shaft 310, respectively. This design can increase the contact area between the lifting mechanism 300 and the bearing platform 200, thereby improving the stability and load capacity of the bearing platform 200. It should be noted that, in order to avoid the inclination of the bearing platform 200 during lifting, the eccentric sliding blocks 320 at both ends of the rotating shaft 310 need to rotate synchronously, so that the eccentric sliding blocks 320 at both ends of the rotating shaft 310 can be in synchronous contact with the corresponding matching portions 210.

[0041] In addition, in order to avoid interference between the rotating shaft 310 and the bearing platform 200, an extension can be arranged on the end surface of the rotating shaft 310, the extension extends along the radial direction of the rotating shaft 310, and the eccentric sliding block 320 can be rotatably connected to the extension through a connecting shaft.

[0042] As shown in FIG. 1, Figure 1 The carrier can further include a driving source 330 and a transmission assembly 340. The driving source 330 can be a motor, a rotary cylinder or the like, and the driving source 330 is connected to the chassis 100. The transmission assembly 340 can be a connecting rod, a transmission chain, a transmission belt or the like. The power input end of the transmission assembly 340 is connected to the output end of the driving source 330, and the power output end of the transmission assembly 340 is connected to the rotating shaft 310, so as to drive the rotating shaft 310 to rotate around the first direction 101, thereby driving the eccentric sliding block 320 to switch between the first position and the second position, and further driving the bearing platform 200 to move up and down along the second direction 102.

[0043] In an optional embodiment of the present application, as Figure 1As shown, the transmission assembly 340 can include a reducer 341, a first gear 342 and a second gear 343, the main function of the reducer 341 is to reduce the rotating speed of the driving source 330 and increase the torque, the input end of the reducer 341 is connected with the output end of the driving source 330, the output end of the reducer 341 is fixedly connected with 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 the second gear 343 is fixedly connected with 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 arranged at a position close to the middle part of the rotating shaft 310. The first gear 342 and the second gear 343 are in meshing connection, and under the condition that the driving source 330 rotates, the first gear 342 is driven to rotate through the reducer 341, the first gear 342 transmits power to the second gear 343 in a meshing transmission mode, and further drives the rotating shaft 310 to rotate, so as to drive the eccentric slider 320 to switch between the first position and the second position, and further drive the bearing platform 200 to move up and down along the second direction 102. In this embodiment, the transmission assembly 340 has the advantages of simple structure, small occupied space and low volume of the carrier.

[0044] In an optional embodiment of the present application, the carrier can further include two lifting mechanisms 300, which can be respectively installed at different positions between the chassis 100 and the bearing platform 200, so as to further improve the stability and load capacity of the bearing platform 200 in operation. Specifically, the bearing platform 200 has a first bearing part and a second bearing part arranged adjacently. For example, the bearing platform 200 is rectangular, and can be divided into the first bearing part and the second bearing part along the center line or the diagonal line of the bearing platform 200. The end of the first bearing part close to the chassis 100 and the end of the second bearing part close to the chassis 100 are each provided with a matching part 210. The number of the matching parts 210 on the first bearing part and the second bearing part can be one or two, which can be selected according to the number of the eccentric sliders 320.

[0045] In the case that the rotating shafts 310 of the two lifting mechanisms 300 rotate synchronously, the eccentric sliders 320 of each lifting mechanism 300 can cooperate with the corresponding matching parts 210, so as to jointly drive the bearing platform 200 to move up and down along the second direction 102. It should be noted that, in order to avoid the inclination of the bearing platform 200 during the lifting process, it is necessary to ensure that the rotating shafts 310 of the two lifting mechanisms 300 rotate synchronously, and the motion states of the eccentric sliders 320 of the two lifting mechanisms 300 also remain synchronous.

[0046] In a specific embodiment of the present application, as shown in Figure 1 ,Figure 4 and Figure 5 As shown in FIGS. 1, 2 and 3, each rotating shaft 310 of the lifting mechanism 300 is provided with an eccentric slider 320 at both ends thereof, and the first bearing part is provided with two matching parts 210 matched with one rotating shaft 310, and the second bearing part is also provided with two matching parts 210 matched with the other rotating shaft 310, and each matching part 310 is provided with a sliding groove 211 extending along the third direction 103, and at least part of the eccentric slider 320 can extend into the sliding groove 211 and be in sliding connection with the sliding groove 211.

[0047] The two lifting mechanisms 300 can be driven independently or by the same driving source 330. In an optional embodiment of the present application, as shown in FIGS. 4 and 5, the two lifting mechanisms 300 can be driven by the same driving source 330. Specifically, the driving source 330 and the transmission assembly 340 are arranged between the two lifting mechanisms 300, the power input end of the transmission assembly 340 is connected with the driving source 330, and the power output end of the transmission assembly 340 is connected with the corresponding rotating shaft 310 of each of the two lifting mechanisms 300, so as to drive the two rotating shafts 310 to rotate synchronously, thereby ensuring that the motion states of the corresponding eccentric sliders 320 of the two lifting mechanisms 300 remain synchronous. Figure 1

[0048] In order to enable the bearing platform 200 to stably lift in the second direction 102, a guide mechanism 400 can also be arranged between the chassis 100 and the bearing platform 200, and the guide mechanism 400 can extend along the second direction 102. The guide mechanism 400 can specifically include a telescopic rod, a lifting slide rail, etc. In an optional embodiment of the present application, as shown in FIGS. 6 and 7, the guide mechanism 400 can include a sleeve 410 and a sliding column 420. The first end of the sleeve 410 is connected with the chassis 100, and the specific connection mode can 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 relatively slide along the second direction 102, and the end of the sliding column 420 away from the sleeve 410 is connected with the bearing platform 200, and the specific connection mode can be bolt connection, welding, etc. In the case that the bearing platform 200 lifts along the second direction 102, the sliding column 420 and the sleeve 410 also relatively slide along the second direction 102. By limiting the sliding column 420 and the sleeve 410, the lifting posture of the bearing platform 200 can be constrained, so that the lifting process is more stable. In addition, the guide mechanism 400 can also limit the movement of the bearing platform 200 along the third direction 103, so that the sliding groove 211 and the eccentric slider 320 can relatively slide. Figure 4 Figure 5

[0049] ​​​In an optional embodiment of the present application, the number of guide mechanisms 400 can be multiple, for example, three, four, five, etc., and the multiple guide mechanisms 400 can be arranged at intervals along the edges of the carrying platform 200 to achieve guiding at different positions of the carrying platform 200. It should be noted that the surface of the carrying platform 200 facing the chassis 100 has edges, which are the edges of the carrying platform 200 described above. The shape of the edges of the carrying platform 200 can be rectangular, circular, oval, etc. For example, for a rectangular carrying platform 200, guide mechanisms 400 can be arranged at the four corners of the carrying platform 200 to achieve stable guiding.

[0050] As shown in Figure 1 and Figure 3 , the chassis 100 can include a chassis body 110 and a first steering wheel 120, a second steering wheel 130, a first walking wheel 140, and a second walking wheel 150. The first steering wheel 120 and the first walking wheel 140 are rotatably arranged at the front end of the chassis body 110, and the second steering wheel 130 and the second walking wheel 150 are rotatably arranged at the rear end of the chassis body 110. It should be noted that the front end and the rear end of the chassis body 110 can be the two ends of the chassis body 110 along its length direction. The first steering wheel 120 and the second steering wheel 130 are driving wheels, mainly used to realize the walking and steering functions of the trolley, and the first walking wheel 140 and the second walking 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 arranged on the surface of the chassis 100.

[0051] As shown in Figures 1 to 3 , the chassis 100 is further provided with a floating beam 160, the middle part of the floating beam 160 is rotatably installed on the rear end of the chassis body 110 through a connecting shaft, and the second steering wheel 130 and the second walking wheel 150 are rotatably arranged at the opposite ends of the floating beam 160. By arranging the floating beam 160, the contact state of the second steering wheel 130 and the second walking wheel 150 with the ground can be dynamically adjusted, so that the trolley can adapt to various complex road conditions.

[0052] As shown in Figure 6 and Figure 7As shown, the carrier can further include a shell 500, which is mounted on the chassis 100, and the shell 500 and the chassis 100 can be assembled by clamping, bolting or the like, and the shell 500 can protect the components provided on the chassis 100. The shell 500 is also provided with an opening, and the carrying platform 200 is arranged in the opening and is in gap cooperation with the edge of the opening. In addition, the side surface of the shell 500 is also provided with a charging interface, a control switch, an indicator light, a sensor and the like, the charging interface is used to charge the built-in battery, the control switch can be used to control the opening and closing of the carrier, the indicator light can indicate the working state of the carrier, and the sensor is used to realize the walking and obstacle avoidance of the carrier.

[0053] The above embodiments of the present application mainly describe the differences between various embodiments, and the different optimization features between various embodiments can be combined to form a more optimal embodiment without contradiction. In view of the brevity of the writing, it will not be repeated here.

[0054] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims, which all belong to the protection of the present application.

Claims

1. A carrier vehicle characterized in that, The carrying vehicle comprises a chassis (100), a bearing platform (200) and a lifting mechanism (300); The bearing platform (200) is arranged on the chassis (100), and the lifting mechanism (300) is arranged between the bearing platform (200) and the chassis (100) and connected with the bearing platform (200) and the chassis (100) respectively. The lifting mechanism (300) comprises a rotating shaft (310) arranged along a first direction (101), the rotating shaft (310) is rotationally connected with the chassis (100) and can rotate around the first direction (101), at least one end surface of the rotating shaft (310) is provided with an eccentric sliding block (320), the eccentric sliding block (320) is rotationally connected with the end surface of the rotating shaft (310), and the rotation axis of the eccentric sliding block (320) is parallel to the rotation axis of the rotating shaft (310). Along a second direction (102), the eccentric sliding block (320) has a first position close to the chassis (100) and a second position away from the chassis (100), one end of the bearing platform (200) close to the chassis (100) is provided with a protruding matching part (210), and the matching part (210) and the eccentric sliding block (320) are mutually attached. In the case that the rotating shaft (310) rotates, the eccentric sliding block (320) switches between the first position and the second position to drive the bearing platform (200) to move up and down along the second direction (102). The first direction (101) is parallel to the disc surface of the chassis (100), and the second direction (102) is perpendicular to the disc surface of the chassis (100).

2. The truck of claim 1, wherein, The matching part (210) is provided with a sliding groove (211) arranged along a third direction (103), at least part of the eccentric sliding block (320) extends into the sliding groove (211) and is slidingly connected with the sliding groove (211), and at least one end surface of the eccentric sliding block (320) and the groove wall of the sliding groove (211) are mutually attached. The third direction (103) is parallel to the disc surface of the chassis (100) and perpendicular to the first direction (101).

3. The truck of claim 1, wherein, Both ends of the rotating shaft (310) along the first direction (101) are provided with the eccentric sliding blocks (320), and one end of the bearing platform (200) close to the chassis (100) is provided with two matching parts (210), and the two matching parts (210) are respectively attached with the eccentric sliding blocks (320) at both ends of the rotating shaft (310).

4. The truck of claim 1, wherein, The carrying vehicle further comprises a driving source (330) and a transmission assembly (340). The driving source (330) is connected with the chassis (100), the power input end of the transmission assembly (340) is connected with the driving source (330), and the power output end of the transmission assembly (340) is connected with the rotating shaft (310) to drive the rotating shaft (310) to rotate.

5. The vehicle of claim 4, wherein, The transmission assembly (340) comprises a reducer (341), a first gear (342) and a second gear (343); An input end of the reducer (341) is connected with the driving source (330), the first gear (342) is fixedly connected to an output end of the reducer (341), the second gear (343) is sleeved outside the rotating shaft (310) and is fixedly connected with the rotating shaft (310), and the first gear (342) and the second gear (343) are in mesh with each other.

6. The vehicle of claim 4 wherein, The carrier comprises two lifting mechanisms (300), the bearing platform (200) has a first bearing part and a second bearing part arranged adjacently, the two lifting mechanisms (300) are arranged opposite to the first bearing part and the second bearing part respectively, and one end of the first bearing part close to the chassis (100) and one end of the second bearing part close to the chassis (100) are both provided with a matching part (210), and the two matching parts (210) are respectively used for matching with eccentric sliding blocks (320) of the corresponding lifting mechanisms (300).

7. The vehicle of claim 6, wherein The driving source (330) and the transmission assembly (340) are arranged between the two lifting mechanisms (300), and power output ends of the transmission assembly (340) are connected with corresponding rotating shafts (310) of the two lifting mechanisms (300) respectively, so as to drive the two rotating shafts (310) to rotate synchronously.

8. The truck of claim 1, wherein, The carrier further comprises a guide mechanism (400), the guide mechanism (400) is arranged along the second direction (102), the guide mechanism (400) comprises a sleeve (410) and a sliding column (420), a first end of the sleeve (410) is connected with the chassis (100), a second end of the sleeve (410) is an open end, the sliding column (420) extends into the sleeve (410) through the second end and slides relative to the sleeve (410) along the second direction (102), and an end of the sliding column (420) away from the sleeve (410) is connected with the bearing platform (200).

9. The vehicle of claim 8, wherein, The carrier comprises a plurality of guide mechanisms (400), and the plurality of guide mechanisms (400) are arranged along edges of the bearing platform (200) at intervals.

10. The truck of claim 1, wherein, The chassis (100) comprises a chassis body (110), a first rudder wheel (120), a second rudder wheel (130), a first walking wheel (140) and a second walking wheel (150), the first rudder wheel (120) and the first walking wheel (140) are rotatably arranged at a front end of the chassis body (110), and the second rudder wheel (130) and the second walking wheel (150) are rotatably arranged at a rear end of the chassis body (110).

11. The truck of claim 10, wherein, The chassis (100) further comprises a floating beam (160), a middle part of the floating beam (160) is rotatably installed on the rear end of the chassis body (110) through a connecting shaft, and the second rudder wheel (130) and the second traveling wheel (150) are rotatably arranged on opposite ends of the floating beam (160).

12. The truck of claim 1, wherein, Further comprising a shell (500), the shell (500) covers the chassis (100) and is provided with an opening, and the bearing platform (200) is arranged in the opening.

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