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 used for controlling the bearing platform to ascend and descend. The lifting mechanism comprises a supporting part, the supporting part is rotationally connected with the chassis, a first spiral surface is arranged at the end, facing the bearing platform, of the supporting part, a second spiral surface is arranged at the end, facing the supporting part, of the bearing platform, and the first spiral surface and the second spiral surface are attached to each other; under the condition that the supporting part rotates relative to the chassis, the first spiral surface is in sliding fit with the second spiral surface, and then the bearing platform can be driven to ascend and descend in the first 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, the problems of shaking and deflection are not prone to occurring, 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 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, and the lifting mechanism is arranged between the bearing platform and the chassis and connected to the bearing platform and the chassis respectively.

[0008] The lifting mechanism comprises a support part, which is rotatably connected to the chassis. One end of the support part towards the bearing platform has a first helical surface, and one end of the bearing platform towards the support part has a second helical surface. The first helical surface and the second helical surface are mutually fitted.

[0009] When the support part rotates relative to the chassis, the first helical surface and the second helical surface slide to drive the bearing platform to move up and down along a first direction.

[0010] The first direction is perpendicular to the disc surface of the chassis.

[0011] The technical solution adopted by the present application can achieve the following technical effects:

[0012] The carrying vehicle disclosed by the embodiment of the application improves the related art, and the sliding fit between the first driving helical surface of the lifting mechanism and the second helical surface of the bearing platform can realize the lifting movement of the bearing platform. Since the driving between the lifting mechanism and the bearing platform is realized by the surface contact, the problems of shaking and deflection are less likely to occur, thereby improving the stability of the carrying vehicle. 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 improving the use flexibility of the carrying vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 An assembly structure schematic view of the chassis, the bearing platform and the lifting mechanism disclosed by the embodiment of the application is shown;

[0014] Figure 2 An assembly structure schematic view of the chassis and the lifting mechanism disclosed by the embodiment of the application is shown;

[0015] Figure 3 A structure schematic view of the bearing platform disclosed by the embodiment of the application is shown;

[0016] Figure 4 An assembly structure schematic view of the support part, the gear ring and the bearing seat disclosed by the embodiment of the application is shown;

[0017] Figure 5 A side view of the chassis, the bearing platform and the lifting mechanism disclosed by the embodiment of the application is shown;

[0018] Figure 6 A side view of the bearing platform and the lifting mechanism disclosed by the embodiment of the application is shown;

[0019] Figure 7 A cross-sectional view of the bearing platform and the lifting mechanism disclosed by the embodiment of the application is shown;

[0020] Figure 8 One of the structure schematic views of the carrying vehicle disclosed by the embodiment of the application is shown;

[0021] Figure 9 The other of the structure schematic views of the carrying vehicle disclosed by the embodiment of the application is shown.

[0022] Explanation of reference signs:

[0023] 100-chassis, 101-first direction, 110-chassis body, 120-first rudder wheel, 130-second rudder wheel, 140-third rudder wheel, 150-fourth rudder wheel, 160-floating beam,

[0024] 200-bearin platform, 210-matching part, 211-sub-matching part, 220-second helical surface, 221-second sub-helical surface,

[0025] 300-lifting mechanism, 310-supporting part, 311-sub-supporting part, 320-first helical surface, 321-first sub-helical surface, 330-driving source, 340-transmission assembly, 341-reducer, 342-bevel gear, 343-tooth ring, 350-bearing seat,

[0026] 400-guiding mechanism, 410-sleeve, 420-sliding column,

[0027] 500-housing. DETAILED DESCRIPTION

[0028] 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, not 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.

[0029] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, not to describe a particular 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" and the like are generally of a kind and do not limit the number of objects, for example, the first object can be one or more.

[0030] The technical solutions disclosed by the various embodiments of the present application will be described in detail below in combination with the drawings.

[0031] Please refer to Figures 1 to 9 The embodiments of the present application disclose a carrier vehicle, 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 carrier vehicle, which is used to support the upper lifting mechanism 300 and the carrying platform 200, and realize the corresponding movement, steering function. The carrier vehicle 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 carrier vehicle can also execute corresponding actions through remote control.

[0032] The carrying platform 200 is arranged on the chassis 100 and is mainly used for carrying goods. In order to facilitate the taking, placing and carrying of the goods, the carrying platform 200 can be designed to be liftable. Specifically, a lifting mechanism 300 can be arranged between the carrying platform 200 and the chassis 100, and the lifting mechanism 300 is connected with the carrying platform 200 and the chassis 100 respectively, so as to realize the lifting movement of the carrying platform 200.

[0033] As shown in Figures 1 to 5 The lifting mechanism 300 can include a support part 310, and a rotating shaft, a sliding rail or the like can be arranged between the support part 310 and the chassis 100, so as to realize the rotating connection between the support part 310 and the chassis 100. An end of the support part 310 facing the carrying platform 200 has a first helical surface 320, and an end of the carrying platform 200 facing the support part 310 has a second helical surface 220. The first helical surface 320 and the second helical surface 220 are mutually adhered. It should be noted that the helical surface is a curved surface formed by a generatrix spirally moving around an axis. The axis can be perpendicular to the chassis 100 or the carrying platform 200. The first helical surface 320 is helically raised from the chassis 100 to the carrying platform 200, and the second helical surface 220 is helically lowered from the chassis 100 to the carrying platform 200. The first helical surface 320 and the second helical surface 220 can be continuously distributed or intermittently distributed.

[0034] The first direction 101 is 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 end of the chassis 100 facing the carrying platform 200. The disc surface of the chassis 100 can be approximately a plane, and the disc surface is mainly used for supporting the lifting mechanism 300 and the carrying platform 200. Considering that the carrying platform 200 is also parallel to the disc surface of the chassis 100 when actually installed, the first direction 101 can also be perpendicular to the carrying platform 200.

[0035] When the support part 310 rotates relative to the chassis 100, the first helical surface 320 and the second helical surface 220 slide relative to each other, and the first helical surface 320 is helically raised or helically lowered relative to the disc surface of the chassis 100. The first helical surface 320 has a bottom end and a top end, the bottom end of the first helical surface 320 is close to the chassis 100, and the top end of the first helical surface 320 is away from the chassis 100. The sliding mode of the second helical surface 220 relative to the first helical surface 320 generally includes two modes. In one mode, the second helical surface 220 slides from the bottom end to the top end of the first helical surface 320, at this time, the second helical surface 220 is in a raised state, and drives the carrying platform 200 to be raised along the first direction 101. In the second mode, the second helical surface 220 slides from the top end to the bottom end of the first helical surface 320, at this time, the second helical surface 220 is in a lowered state, and drives the carrying platform 200 to be lowered along the first direction 101, so that the lifting movement of the carrying platform 200 along the first direction 101 can be realized. In this process, the first helical surface 320 and the second helical surface 220 are always in a fitted state, and the stability is good.

[0036] To ensure the stability of the carrying platform 200 during lifting, the setting positions, extension lengths and other parameters of the support part 310, the first helical surface 320 and the second helical surface 220 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 first helical surface 320 and the second helical surface 220, thereby avoiding the deflection of the carrying platform 200.

[0037] As can be seen from the above, the trolley disclosed in the embodiments of the present application improves the related art. The lifting mechanism 300 is used, and the lifting mechanism 300 and the carrying platform 200 are driven by surface contact, so that the problems of shaking and deflection are less likely to occur, thereby improving the stability of the trolley in operation. Moreover, the lifting mechanism 300 has a simple structure and does not need to occupy much installation space, thereby reducing the height of the trolley, making the application scenarios of the trolley more extensive, and further improving the use flexibility of the trolley.

[0038] The second helical surface 220 is arranged at one end of the carrying platform 200 facing the support part 310. The second helical surface 220 can be lower than the surface of the carrying platform 200, that is, the second helical surface 220 can be formed on the surface of the carrying platform 200 in a slotted manner. Specifically, a groove can be formed at one end of the carrying platform 200 facing the support part 310, and the second helical surface 220 is the bottom surface of the groove. When the first helical surface 320 and the second helical surface 220 slide and cooperate, at least part of the support part 310 can extend into the groove, which can save installation space and effectively reduce the height of the trolley.

[0039] In an alternative embodiment of the present application, as shown in Figures 3 to 7 The raised matching part 210 can be arranged at one end of the bearing platform 200 facing the support part 310, and the second helical surface 220 can be arranged at one end of the matching part 210 facing the support part 310. The matching part 210 and the bearing platform 200 can be an integral structure, or they can be separately manufactured and then assembled together by bonding, clamping or other methods. By arranging the second helical surface 220 on the raised matching part 210, on the one hand, the structural strength of the bearing platform 200 will not be adversely affected, and on the other hand, the bearing platform 200 can have sufficient lifting stroke to smoothly realize the lifting and lowering of the goods.

[0040] To further improve the stability of the cooperation between the lifting mechanism 300 and the bearing platform 200, as shown in Figures 1 to 7 The support part 310 can include at least two sub-support parts 311 arranged along a predetermined circumferential direction, and the first helical surface 320 can include at least two first sub-helical surfaces 321 arranged at one end of the sub-support part 311 facing the bearing platform 200. The projection of the first sub-helical surface 321 along the first direction 101 can be 1 / 2 circle, 1 / 3 circle or 1 / 4 circle, etc. The first sub-helical surface 321 has a bottom end close to the bottom plate 100 and a top end away from the bottom plate 100. For adjacent first sub-helical surfaces 321, the bottom end of one first sub-helical surface 321 is arranged adjacent to the top end of the other first sub-helical surface 321.

[0041] The matching part 210 includes at least two sub-matching parts 211 arranged along a predetermined circumferential direction, and the second helical surface 220 can include at least two second sub-helical surfaces 221. The projection of the second sub-helical surface 221 along the first direction 101 can be 1 / 6 circle, 1 / 8 circle or 1 / 12 circle, etc. The second sub-helical surface 221 is arranged at one end of the sub-matching part 211 facing the sub-support part 311. The sub-support part 311 and the sub-matching part 211 are arranged one by one, and the first sub-helical surface 321 and the second sub-helical surface 221 are mutually adhered. Considering that the second sub-helical surface 221 needs to slide on the first sub-helical surface 321, the first sub-helical surface 321 needs to provide a certain sliding path for the second sub-helical surface 221. Therefore, the projection of the first sub-helical surface 321 along the first direction 101 and the projection of the second sub-helical surface 221 along the first direction 101 can have the following corresponding relationship:

[0042] When the projection of the second sub-spiral surface 221 along the first direction 101 is 1 / 6 of a circle, the projection of the first sub-spiral surface 321 along the first direction 101 can be 1 / 2 of a circle; when the projection of the second sub-spiral surface 221 along the first direction 101 is 1 / 8 of a circle, the projection of the first sub-spiral surface 321 along the first direction 101 can be 1 / 3 of a circle; when the projection of the second sub-spiral surface 221 along the first direction 101 is 1 / 12 of a circle, the projection of the first sub-spiral surface 321 along the first direction 101 can be 1 / 4 of a circle.

[0043] When the support part 310 rotates relative to the chassis 100, the first sub-spiral surface 321 and the corresponding second sub-spiral surface 221 are in sliding fit, and the sub-cooperating part 211 can slide between the top end and the bottom end of the sub-support part 311, so that the lifting and lowering movement of the bearing platform 200 along the first direction 101 can be realized. In this process, the first sub-spiral surface 321 and the second sub-spiral surface 221 are always in the state of fit, and the stability is good.

[0044] In an optional embodiment of the present application, at least two sub-support parts 311 are arranged continuously along a preset circumferential direction, and correspondingly, at least two first sub-spiral surfaces 321 are also arranged continuously along the preset circumferential direction; at least two sub-cooperating parts 211 are arranged at intervals along the preset circumferential direction, and correspondingly, at least two second sub-spiral surfaces 221 are also arranged at intervals along the preset circumferential direction. The continuously arranged sub-support parts 311 can stably support the sub-cooperating part 211 along the preset circumferential direction, so that the bearing platform 200 is uniformly stressed in the preset circumferential direction. The center of the above-mentioned preset circumferential direction can be the geometric center of the bearing platform 200.

[0045] For example, four sub-support parts 311 are arranged continuously along the preset circumferential direction, and correspondingly, four sub-cooperating parts 211 are also arranged at intervals along the preset circumferential direction at one end of the bearing platform 200 facing the support part 310.

[0046] As shown in Figures 1 to 7 The lifting mechanism 300 can further include a driving source 330 and a transmission assembly 340. The driving source 330 can be a motor, a rotary cylinder, etc. 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, etc. 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 support part 310, so as to drive the support part 310 to rotate relative to the chassis 100, and further drive the bearing platform 200 to move up and down along the first direction 101.

[0047] In an optional embodiment of the present application, as Figure 2As shown, the transmission assembly 340 can include a reducer 341, a bevel gear 342 and a gear ring 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 driving source 330, the bevel gear 342 is connected to the output end of the reducer 341 and can rotate synchronously with the output end of the reducer 341. The gear ring 343 is sleeved on the outer side of the support part 310 and is fixedly connected with the support part 310, the gear ring 343 and the support part 310 can be respectively manufactured and then assembled together by welding, bolting, riveting or the like, or the gear ring 343 and the support part 310 can be of an integrated structure, the edge of the support part 310 on the side extends radially to form the gear ring 343. In the case that the driving source 330 rotates, the bevel gear 342 meshes with the gear ring 343 to drive the support part 310 to rotate relative to the chassis 100, thereby realizing the lifting control of the bearing platform 200. In this embodiment, the transmission assembly 340 has a simple structure and occupies less space, which is conducive to reducing the size of the carrier.

[0048] To ensure that the support part 310 can rotate stably, as shown in Figure 2 , Figure 4 and Figure 7 , the lifting mechanism 300 can further include a bearing seat 350, the bearing seat 350 is protrudingly arranged on the disc surface of the chassis 100, the bearing seat 350 can be of a disc structure, and one end of the bearing seat 350 towards the chassis 110 can be assembled with the chassis 110 by bonding, riveting, bolting or the like. The support part 310 can be of a ring structure, the support part 310 is sleeved and installed on the outer side of the bearing seat 350 and is rotationally connected with the bearing seat 350, the outer side of the bearing seat 350 and the inner side of the support part 310 are connected through a bearing, thereby reducing the friction when the support part 310 rotates. In actual processing, the support part 310, the bearing seat 350 and the gear ring 343 can be processed as a whole to save the installation space on the chassis 100; of course, in the case that the installation space is sufficient, the support part 310, the bearing seat 350 and the gear ring 343 can be respectively processed and then assembled.

[0049] As shown in Figure 1 and Figure 2 , to enable the bearing platform 200 to stably lift in the first direction 101, a guide mechanism 400 can be further arranged between the chassis 100 and the bearing platform 200, the guide mechanism 400 can extend along the first direction 101, and the guide mechanism 400 can specifically include a telescopic rod, a lifting slide rail or the like.

[0050] In an optional embodiment of the present application, 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 manner can be bolt connection, welding, etc., the second end of the sleeve 410 is an open end, 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 first direction 101, the end of the sliding column 420 away from the sleeve 410 is connected with the carrying platform 200, and the specific connection manner can be bolt connection, welding, etc. When the carrying platform 200 is lifted along the first direction 101, the sliding column 420 and the sleeve 410 also slide relative to each other along the first direction 101, and by the limiting cooperation of the sliding column 420 and the sleeve 410, the lifting posture of the carrying platform 200 can be constrained, so that the lifting process is more stable.

[0051] In an optional embodiment of the present application, the number of guide mechanisms 400 can be multiple, for example, three, four, five, etc., and multiple guide mechanisms 400 can be arranged at intervals along the edge of the carrying platform 200 to realize the guiding effect on different positions of the carrying platform 200. It should be noted that the surface of the carrying platform 200 facing the chassis 100 has an edge, which is the edge of the carrying platform 200 described above, and the shape of the edge of the carrying platform 200 can be rectangular, circular, elliptical, 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 realize stable guiding.

[0052] As shown in Figure 1 and Figure 2 The chassis 100 can include a chassis body 110, a first steering wheel 120, a second steering wheel 130, a third steering wheel 140, and a fourth steering wheel 150, the first steering wheel 120 and the second steering wheel 130 are rotatably arranged at the front end of the chassis body 110, and the third steering wheel 140 and the fourth steering 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 the length direction thereof. The steering wheel is a driving wheel, mainly used to realize the walking and steering function of the trolley, and by arranging four steering wheels, the flexibility of the trolley can be improved. The steering wheel and the lifting mechanism 300 can be powered by a battery, and the battery can be arranged on the disc surface of the chassis 100.

[0053] As shown in Figure 1 and Figure 2As shown, the chassis 100 is further provided with a floating beam 160, the middle part of the floating beam 160 is rotatably installed at the rear end of the chassis body 110 through a connecting shaft, and the third steering wheel 140 and the fourth steering 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 third steering wheel 140 and the fourth steering wheel 150 with the ground can be dynamically adjusted, so that the trolley can adapt to various complex road conditions.

[0054] As shown in Figure 8 and Figure 9 The trolley can further include a shell 500, the shell 500 is arranged on the chassis 100, the shell 500 and the chassis 100 can be assembled by clamping, bolt connection, etc., and the shell 500 can protect the parts arranged on the chassis 100. The shell 500 is further provided with an opening, the bearing 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 further provided with a charging interface, a control switch, an indicator light, a sensor and the like, the charging interface is used for charging the built-in battery, the control switch can be used for controlling the opening and closing of the trolley, the indicator light can indicate the working state of the trolley, and the sensor is used for realizing the walking and obstacle avoidance of the trolley.

[0055] 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 better embodiment without contradiction. Considering the brevity of the text, the details are not repeated here.

[0056] 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, the above specific embodiments are only illustrative and not restrictive, and 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 protection scope of the claims, all of which belong to the protection of the present application.

Claims

1. A carrier vehicle characterized in that, The device 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 support part (310) which is rotationally connected with the chassis (100), and one end of the support part (310) facing the bearing platform (200) is provided with a first helical surface (320), and one end of the bearing platform (200) facing the support part (310) is provided with a second helical surface (220), and the first helical surface (320) and the second helical surface (220) are mutually fitted; In the case that the support part (310) rotates relative to the chassis (100), the first helical surface (320) and the second helical surface (220) are slidingly fitted to drive the bearing platform (200) to move up and down along a first direction (101); The first direction (101) is perpendicular to the disc surface of the chassis (100).

2. The truck of claim 1, wherein, One end of the bearing platform (200) facing the support part (310) is provided with a protruding matching part (210), the matching part (210) is arranged opposite to the support part (310), and the second helical surface (220) is arranged at one end of the matching part (210) facing the support part (310).

3. The vehicle of claim 2, wherein, The support part (310) comprises at least two sub-support parts (311), and the at least two sub-support parts (311) are arranged along a preset circumferential direction, the first helical surface (320) comprises at least two first sub-helical surfaces (321), and the first sub-helical surfaces (321) are correspondingly arranged at one end of the sub-support parts (311) facing the bearing platform (200); The matching part (210) comprises at least two sub-matching parts (211), and the at least two sub-matching parts (211) are arranged along the preset circumferential direction, the second helical surface (220) comprises at least two second sub-helical surfaces (221), and the second sub-helical surfaces (221) are correspondingly arranged at one end of the sub-matching parts (211) facing the sub-support parts (311); In the case that the support part (310) rotates relative to the chassis (100), the first sub-helical surface (321) and the corresponding second sub-helical surface (221) are slidingly fitted to drive the bearing platform (200) to move up and down along the first direction (101).

4. The vehicle of claim 3, wherein, The at least two sub-support parts (311) are continuously arranged along the preset circumferential direction, and the at least two sub-matching parts (211) are arranged at intervals along the preset circumferential direction.

5. The truck of claim 1, wherein, The lifting mechanism (300) further comprises a driving source (330) and a transmission assembly (340). The driving source (330) is connected with the chassis (100), the transmission assembly (340) is connected with the support part (310) and the driving source (330) respectively, and the driving source (330) drives the support part (310) to rotate relative to the chassis (100) through the transmission assembly (340).

6. The vehicle of claim 5, wherein, The transmission assembly (340) comprises a speed reducer (341), a bevel gear (342) and a gear ring (343). The input end of the speed reducer (341) is connected with the driving source (330), the bevel gear (342) is connected to the output end of the speed reducer (341), and the gear ring (343) is sleeved on the outer side of the support part (310) and fixedly connected with the support part (310). When the driving source (330) rotates, the bevel gear (342) and the gear ring (343) are engaged and driven to drive the support part (310) to rotate relative to the chassis (100).

7. The vehicle of claim 6, wherein, The lifting mechanism (300) further comprises a bearing seat (350), the bearing seat (350) is protrudingly arranged on the disc surface of the chassis (100), the support part (310) is sleeved on the outer side of the bearing seat (350) and rotationally connected with the bearing seat (350).

8. The truck of claim 1, wherein, Further comprising a guide mechanism (400), the guide mechanism (400) is arranged along the first direction, the guide mechanism (400) comprises a sleeve (410) and a sliding column (420), the first end of the sleeve (410) is connected with the chassis (100), the second end of the sleeve (410) is an open end, the sliding column (420) extends into the interior of the sleeve (410) through the second end and slides relative to the sleeve (410) along the first direction, and the 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 the guide mechanisms (400), and the plurality of the guide mechanisms (400) are arranged along the 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 third rudder wheel (140) and a fourth rudder wheel (150), the first rudder wheel (120) and the second rudder wheel (130) are rotatably arranged at the front end of the chassis body (110), and the third rudder wheel (140) and the fourth rudder wheel (150) are rotatably arranged at the rear end of the chassis body (110).

11. The truck of claim 10, wherein, The chassis (100) further comprises 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 third rudder wheel (140) and the fourth rudder wheel (150) are rotatably arranged at the opposite two ends of the floating beam (160).

12. The truck of claim 1, wherein, Also included is a housing (500) covering mounted on the chassis (100), the housing (500) being provided with an opening, the bearing platform (200) being arranged in the opening.

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