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 first supporting part moving in the first direction, the end, facing the bearing platform, of the first supporting part is provided with a first driving matching face, the end, facing the first supporting part, of the bearing platform is provided with a second driving matching face, and the first driving matching face and the second driving matching face both form preset included angles with the disc face of the chassis. Under the condition that the first supporting part moves in the first direction, the first driving matching face is in sliding fit with the second driving matching face, and then the bearing platform can be driven to ascend and descend in the second direction. By the adoption of the lifting mechanism, due to the fact that 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 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 transportation of 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. UTILITY MODEL CONTENT

[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, 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 first support part moving in a first direction, and an end of the first support part facing the bearing platform has a first driving cooperation surface, and an end of the bearing platform facing the first support part has a second driving cooperation surface, and the first driving cooperation surface and the second driving cooperation surface are at a preset angle with the disc surface of the chassis.

[0009] When the first support part moves in the first direction, the first driving cooperation surface and the second driving cooperation surface are slidingly matched to drive the bearing platform to move up and down in a second direction.

[0010] 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.

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

[0012] The carrying vehicle disclosed by the embodiments of the present application improves the related art, and the sliding cooperation between the first driving cooperation surface of the lifting mechanism and the second driving cooperation 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 structure of the lifting mechanism is simple, and more installation space is not required, 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 The assembly structure schematic diagram of the chassis, the bearing platform and the lifting mechanism disclosed by the embodiments of the present application is shown;

[0014] Figure 2 The assembly structure schematic diagram of the chassis and the lifting mechanism disclosed by the embodiments of the present application is shown;

[0015] Figure 3 The assembly structure schematic diagram of the chassis and the lifting mechanism disclosed by the embodiments of the present application is shown;

[0016] Figure 4 The structure schematic diagram of the bearing platform disclosed by the embodiments of the present application is shown;

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

[0018] Figure 6 The structure schematic diagram of the carrying vehicle disclosed by the embodiments of the present application is shown;

[0019] Figure 7 The structure schematic diagram of the carrying vehicle disclosed by the embodiments of the present application is shown.

[0020] Explanation of reference signs:

[0021] 100-chassis, 101-first direction, 102-second direction, 103-third direction, 110-chassis body, 120-first steering wheel, 130-second steering wheel, 140-first walking wheel, 150-second walking wheel, 160-floating beam,

[0022] 200-bear platform, 210-first cooperation part, 211-second driving cooperation surface, 220-second cooperation part, 221-fourth driving cooperation surface,

[0023] 300-lifting mechanism, 310-first support part, 311-first driving matching surface, 312-first sliding block, 313-first ear part, 320-second support part, 321-third driving matching surface, 322-second sliding block, 323-second ear part, 330-driving source, 340-transmission assembly, 341-reducer, 342-first lead screw, 343-second lead screw, 344-first transmission chain, 345-second transmission chain,

[0024] 400-guiding mechanism, 410-sleeve, 420-sliding column

[0025] 500-housing. DETAILED DESCRIPTION

[0026] 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.

[0027] 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 usually a class, not limited to the number of objects, for example, the first object can be one or more.

[0028] The technical solutions disclosed by the various embodiments of the present application will be described in detail below in combination with the drawings.

[0029] Please refer to Figures 1 to 7 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 transport 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.

[0030] 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. 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 facing the carrying platform 200, and the disc surface of the chassis 100 can be approximately planar and is mainly used for supporting the lifting mechanism 300 and the carrying platform 200. Considering that the carrying platform 200 is parallel to the disc surface of the chassis 100 during actual installation, the first direction 101 can also be parallel to the carrying platform 200, and the second direction 102 can also be perpendicular to the carrying platform 200.

[0031] As shown in Figures 1 to 5 The specific structure of the lifting mechanism 300 is described in combination with the first direction 101 and the second direction 102. The lifting mechanism 300 can include a first support part 310 moving along the first direction 101. An installation support can be arranged on the disc surface of the chassis 100, and the first support part 310 can be arranged on the installation support and connected with the chassis 100 in a sliding manner. The end of the first support part 310 facing the carrying platform 200 has a first driving matching surface 311. Correspondingly, the end of the carrying platform 200 facing the first support part 310 has a second driving matching surface 211. The first driving matching surface 311 and the second driving matching surface 211 are both at a preset angle with the disc surface of the chassis 100, and the preset angle is greater than 0° and less than 90°, and can be 30°, 40°, 50°, etc. That is, taking the disc surface of the chassis 100 as a reference horizontal surface, the first driving matching surface 311 and the second driving matching surface 211 are both inclined surfaces, and the first driving matching surface 311 and the second driving matching surface 211 are mutually adhered. The first support part 310 can stably support the carrying platform 200 in a surface contact manner.

[0032] In the case that the first support part 310 moves along the first direction 101, relative sliding occurs between the first driving matching surface 311 and the second driving matching surface 211, and the second driving matching surface 211 is a slope surface with respect to the disc surface of the base disc 100. The second driving matching surface 211 has a bottom end and a top end along the inclination direction of the second driving matching surface 211, the bottom end of the second driving matching surface 211 is close to the base disc 100, and the top end of the second driving matching surface 211 is away from the base disc 100. The sliding mode of the first driving matching surface 311 with respect to the second driving matching surface 211 generally includes two modes. In the first mode, the first driving matching surface 311 slides from the bottom end to the top end of the second driving matching surface 211. At this time, since the position of the first driving matching surface 311 with respect to the base disc 100 in the second direction 102 does not change, the second driving matching surface 211 is in a descending state and drives the bearing platform 200 to descend along the second direction 102. In the second mode, the first driving matching surface 311 slides from the top end to the bottom end of the second driving matching surface 211. At this time, since the position of the first driving matching surface 311 with respect to the base disc 100 in the second direction 102 does not change, the second driving matching surface 211 is in a lifting state and drives the bearing platform 200 to ascend along the second direction 102, so that the ascending and descending movement of the bearing platform 200 along the second direction 102 can be realized. In this process, the first driving matching surface 311 and the second driving matching surface 211 are always in a state of adhesion, and the stability is good.

[0033] In order to ensure the stability of the bearing platform 200 during the ascending and descending process, the setting positions, sizes and preset angles of the first support part 310 and the second driving matching surface 211 can be selected according to the gravity center of the bearing platform 200, so that the gravity center of the bearing platform 200 always falls on the contact area of the first driving matching surface 311 and the second driving matching surface 211, thereby avoiding the deflection of the bearing platform 200.

[0034] 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 driving between the lifting mechanism 300 and the bearing platform 200 is realized by the surface contact mode, so that the problems of shaking and deflection are less likely to occur, thereby improving the stability of the trolley running. Moreover, the structure of the lifting mechanism 300 is simple, and a large installation space is not required, 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.

[0035] The second driving matching surface 211 is arranged at one end of the bearing platform 200 facing the first supporting part 310. The second driving matching surface 211 can be lower than the surface of the bearing platform 200, that is, the second driving matching surface 211 can be formed on the surface of the bearing platform 200 by means of slotting. Specifically, a groove can be formed at one end of the bearing platform 200 facing the first supporting part 310, and the second driving matching surface 211 is the bottom surface of the groove. When the first driving matching surface 311 and the second driving matching surface 211 are in sliding cooperation, at least part of the first supporting part 310 can extend into the groove. This way can save installation space, thereby effectively reducing the height of the trolley.

[0036] In an optional embodiment of the present application, as shown in Figure 4 and Figure 5 , a protruding first matching part 210 can be arranged at one end of the bearing platform 200 facing the first supporting part 310. The first matching part 210 is arranged opposite to the first supporting part 310, and the second driving matching surface 211 is the end surface of the first matching part 210 facing the first supporting part 310. The first matching part 210 and the bearing platform 200 can be an integral structure, or they can be separately manufactured and then assembled together by means of bonding, clamping or the like. By arranging the second driving matching surface 211 on the protruding first matching part 210, on the one hand, the structure strength of the bearing platform 200 will not be adversely affected, and on the other hand, the bearing platform 200 can also have sufficient lifting stroke to smoothly realize the lifting and lowering of goods.

[0037] To further improve the stability of the cooperation between the lifting mechanism 300 and the bearing platform 200, as shown in Figures 1 to 5 , the lifting mechanism 300 can also include a second supporting part 320 moving along the first direction 101. An installation bracket can be arranged on the disc surface of the chassis 100, and the second supporting part 320 can be arranged on the installation bracket and in sliding connection with the chassis 100. The bearing platform 200 has adjacently arranged first and second bearing half-areas. Exemplarily, the rectangular bearing platform 200 can be divided into first and second bearing parts along the center line or diagonal line of the bearing platform 200.

[0038] The first support part 310 can be arranged opposite to the first bearing part, and the first matching part 210 is arranged at one end of the first bearing part facing the first support part 310; the second support part 320 can be arranged opposite to the second bearing part, and one end of the second support part 320 facing the second bearing part has a third driving matching surface 321; correspondingly, the second matching part 220 is arranged as a protrusion at one end of the second bearing part facing the second support part 320, and one end of the second matching part 220 facing the second support part 320 has a fourth driving matching surface 221; the third driving matching surface 321 and the fourth driving matching surface 221 are both at the preset angle with the disc surface of the chassis 100, and the specific value of the preset angle can refer to the first driving matching surface 311 and the second driving matching surface 211 described above. By arranging the first support part 310 and the second support part 320 corresponding to the first bearing part and the second bearing part of the bearing platform 200, the stability of the bearing platform 200 can be improved.

[0039] In the case that the first support part 310 and the second support part 320 move along the first direction 101, the first driving matching surface 311 and the second driving matching surface 211 are in sliding cooperation, and the third driving matching surface 321 and the fourth driving matching surface 221 are in sliding cooperation, 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 bearing platform 200 from tilting during the lifting process, it is necessary to ensure that the first support part 310 and the second support part 320 move synchronously, so that the first driving matching surface 311 and the second driving matching surface 211, and the third driving matching surface 321 and the fourth driving matching surface 221 are in synchronous cooperation.

[0040] The moving directions of the first support part 310 and the second support part 320 when driving the bearing platform 200 to move up and down can be the same or opposite. In order to balance the stress of the bearing platform 200 on the first bearing part and the second bearing part, the first support part 310 and the second support part 320 can be configured in opposite directions. As shown in Figure 4 and Figure 5 When the first support part 310 and the second support part 320 move away from each other and move to the two sides of the bearing platform 200, the bearing platform 200 is in a lifted state; when the first support part 310 and the second support part 320 move towards each other and close, the bearing platform 200 is in a lowered state. The above design makes the support force of the bearing platform 200 on the first bearing part and the second bearing part evenly distributed, which is beneficial to improve the stability of the bearing platform 200.

[0041] As shown in Figures 2 to 5As shown, 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 with the chassis 100, the transmission assembly 340 can be a connecting rod, a transmission chain, a transmission belt, etc., a power input end of the transmission assembly 340 is connected with an output end of the driving source 330, and a power output end of the transmission assembly 340 is connected with the first support part 310 and the second support part 320 respectively, so as to drive the first support part 310 and the second support part 320 to move along the first direction 101 respectively, and further drive the bearing platform 200 to move up and down along the second direction 102.

[0042] In an optional embodiment of the present application, as shown in Figure 2 The transmission assembly 340 can include a speed reducer 341, a first lead screw 342 and a second lead screw 343, the first lead screw 342 and the second lead screw 343 are arranged along the first direction 101, the first lead screw 342 and the second lead screw 343 are connected with the chassis 100 through mounting supports respectively, the first lead screw 342 and the second lead screw 343 can rotate relative to the mounting supports respectively, the first support part 310 is sleeved on the first lead screw 342 and threadedly cooperates with the first lead screw 342 to form a first lead screw pair, and the second support part 320 is sleeved on the second lead screw 343 and threadedly cooperates with the second lead screw 343 to form a second lead screw pair. The driving source 330 provides the power required for rotation of the first lead screw 342 and the second lead screw 343 through the speed reducer 341.

[0043] The main function of the speed reducer 341 is to reduce the rotating speed of the driving source 330 and increase the torque, an input end of the speed reducer 341 is connected with an output end of the driving source 330, and output ends of the speed reducer 341 are in transmission connection with the first lead screw 342 and the second lead screw 343 respectively, so as to drive the first lead screw 342 and the second lead screw 343 to rotate respectively, thereby driving the first support part 310 and the second support part 320 to move along the first direction 101, and realizing the lifting control of the bearing platform 200. In the embodiment, since the components required for transmission are integrated in the interior of the speed reducer 341, the occupied space is less, which is beneficial to reduce the volume of the carrying vehicle.

[0044] In another optional embodiment of the present application, as shown in Figure 3As shown, the transmission assembly 340 can further include a first transmission chain 344 and a second transmission chain 345, the output end of the speed reducer 341 is provided with a first gear and a second gear, the first gear and the second gear are arranged in a spaced manner, one end of the first lead screw 342 is provided with a third gear, one end of the second lead screw 343 is provided with a fourth gear, the first transmission chain 344 is meshed with the first gear and the third gear respectively, and the second transmission chain 345 is meshed with the second gear and the fourth gear respectively. Under the condition that the driving source 330 rotates, the first transmission chain 344 can drive the first lead screw 342 to rotate; the second transmission chain 345 can drive the second lead screw 343 to rotate, thereby driving the first support part 310 and the second support part 320 to move along the first direction 101, and realizing the lifting control of the bearing platform 200. In this embodiment, the speed reducer 341 can drive the first gear and the second gear to rotate synchronously, so that the synchronization of the first support part 310 and the second support part 320 when moving is better.

[0045] In order to consider the convenience of installation of the first support part 310 and the second support part 320 and the stability of support, as shown in the figure, Figures 2 to 4 As shown, a third direction 103 is defined parallel to the disc surface of the chassis 100 and perpendicular to the first direction 101, the first support part 310 can include a first sliding block 312 and two first ear parts 313, the two first ear parts 313 are respectively connected to the two ends of the first sliding block 312 along the third direction 103, the connection mode of the first ear part 313 and the first sliding block 312 can be bonding, clamping, bolt connection, etc., both the two first ear parts 313 are provided with a first driving cooperation surface 311, and the end of the first bearing part facing the first support part 310 is respectively provided with two first cooperation parts 210, the first cooperation part 210 is arranged correspondingly with the first ear part 313, and correspondingly, each first driving cooperation surface 311 has a second driving cooperation surface 211 matched therewith.

[0046] The second support part 320 can include a second sliding block 322 and two second ear parts 323, the two second ear parts 323 are respectively connected to the two ends of the second sliding block 322 along the third direction 103, the connection mode of the second ear part 323 and the second sliding block 322 can be bonding, clamping, bolt connection, etc., both the two second ear parts 323 are provided with a third driving cooperation surface 321, and the end of the second bearing part facing the second support part 320 is respectively provided with two second cooperation parts 220, the second cooperation part 220 is arranged correspondingly with the first ear part 313, and correspondingly, each third driving cooperation surface 321 has a fourth driving cooperation surface 221 matched therewith. With the above design, the contact area between the lifting mechanism 300 and the bearing platform 200 can be increased, thereby further improving the stability of the lifting of the bearing platform 200.

[0047] In order to enable the bearing platform 200 to stably ascend and descend in the second direction 102, a guide mechanism 400 can also be arranged between the chassis 100 and the bearing platform 200, the guide mechanism 400 can be arranged to extend along the second direction 102, and the guide mechanism 400 can specifically include a telescopic rod, a lifting slide rail, etc.

[0048] In an optional embodiment of the present application, the guide mechanism 400 can include a sleeve 410 and a sliding column 420, a first end of the sleeve 410 is connected to the chassis 100, and the specific connection manner can be bolt connection, welding, etc., a 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 second direction 102, an end of the sliding column 420 away from the chassis 100 is connected to the bearing platform 200, and the specific connection manner can be bolt connection, welding, etc. In the case of ascending and descending of the bearing platform 200 along the second direction 102, the sliding column 420 and the sleeve 410 also slide relative to each other along the second direction 102, and by means of the limiting cooperation of the sliding column 420 and the sleeve 410, the ascending and descending posture of the bearing platform 200 can be constrained, so that the ascending and descending process is more stable.

[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 multiple guide mechanisms 400 can be arranged at intervals along the edges of the bearing platform 200 to realize the guiding effect on different positions of the bearing platform 200. It should be noted that the surface of the bearing platform 200 facing the chassis 100 has edges, which are the edges of the bearing platform 200 described above, and the shape of the edges of the bearing platform 200 can be rectangular, circular, elliptical, etc. Exemplarily, taking a rectangular bearing platform 200 as an example, a guide mechanism 400 can be arranged at each corner of the bearing platform 200 to realize stable guiding.

[0050] As shown in FIG. 1, Figures 1 to 3 The chassis 100 can include a chassis body 110 and 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 the front end of the chassis body 110, and the second rudder 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 the length direction thereof. The first rudder wheel 120 and the second rudder 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 rudder wheel 120, the second rudder wheel 130 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.

[0051] like Figures 1 to 3 As shown, 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 disposed at opposite ends of the floating beam 160. By providing 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.

[0052] like Figure 6 and Figure 7 As shown, 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 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.

[0053] 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.

[0054] 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 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 first support part (310) moving along a first direction (101), and an end of the first support part (310) facing the bearing platform (200) is provided with a first driving matching surface (311), and an end of the bearing platform (200) facing the first support part (310) is provided with a second driving matching surface (211), and the first driving matching surface (311) and the second driving matching surface (211) are both at a preset angle with the disc surface of the chassis (100); When the first support part (310) moves along the first direction (101), the first driving matching surface (311) and the second driving matching surface (211) are in sliding cooperation to drive the bearing platform (200) to move up and down along a 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, An end of the bearing platform (200) facing the first support part (310) is provided with a protruding first matching part (210), the first matching part (210) is arranged opposite to the first support part (310), and the second driving matching surface (211) is an end surface of the first matching part (210) facing the first support part (310).

3. The vehicle of claim 2, wherein, The lifting mechanism (300) further comprises a second support part (320) moving along the first direction (101); The bearing platform (200) has a first bearing part and a second bearing part arranged adjacent to each other, the first support part (310) is arranged opposite to the first bearing part, and the first matching part (210) is arranged at an end of the first bearing part facing the first support part (310); The second support part (320) is arranged opposite to the second bearing part, and an end of the second support part (320) facing the second bearing part is provided with a third driving matching surface (321), an end of the second bearing part facing the second support part (320) is provided with a protruding second matching part (220), an end of the second matching part (220) facing the second support part (320) is provided with a fourth driving matching surface (221), and the third driving matching surface (321) and the fourth driving matching surface (221) are both at the preset angle with the disc surface of the chassis (100). When the first support part (310) and the second support part (320) move along the first direction (101), the first driving cooperation surface (311) and the second driving cooperation surface (211) are in sliding cooperation, and the third driving cooperation surface (321) and the fourth driving cooperation surface (221) are in sliding cooperation, so as to drive the bearing platform (200) to move up and down along the second direction (102).

4. The vehicle of claim 3, wherein The first support part (310) and the second support part (320) move towards or away from each other along the first direction (101).

5. The truck of claim 3, 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), a power input end of the transmission assembly (340) is connected with the driving source (330), and power output ends of the transmission assembly (340) are respectively connected with the first support part (310) and the second support part (320), so as to drive the first support part (310) and the second support part (320) to move along the first direction (101) respectively.

6. The vehicle of claim 5, wherein, The transmission assembly (340) comprises a speed reducer (341), a first lead screw (342) and a second lead screw (343). The first lead screw (342) and the second lead screw (343) are arranged along the first direction (101) and are respectively connected with the chassis (100) through mounting supports, the first support part (310) is in threaded cooperation with the first lead screw (342) to form a first lead screw pair, and the second support part (320) is in threaded cooperation with the second lead screw (343) to form a second lead screw pair. An input end of the speed reducer (341) is connected with the driving source (330), and output ends of the speed reducer (341) are in transmission connection with the first lead screw (342) and the second lead screw (343) respectively, so as to drive the first support part (310) and the second support part (320) to move along the first direction (101) respectively.

7. The vehicle of claim 6, wherein The transmission assembly (340) further comprises a first transmission chain (344) and a second transmission chain (345). An output end of the speed reducer (341) is provided with a first gear and a second gear, one end of the first lead screw (342) is provided with a third gear, one end of the second lead screw (343) is provided with a fourth gear, the first transmission chain (344) is in meshing with the first gear and the third gear respectively, so as to drive the first lead screw (342) to rotate, and the second transmission chain (345) is in meshing with the second gear and the fourth gear respectively, so as to drive the second lead screw (343) to rotate.

8. The vehicle of claim 3, wherein, The first supporting part (310) comprises a first sliding block (312) and two first ears (313), the two first ears (313) are connected to two ends of the first sliding block (312) along a third direction (103), the first driving matching surface (311) is arranged on the first ear (313), and one end of the first bearing part towards the first supporting part (310) is respectively provided with two first matching parts (210), the first matching part (210) is arranged correspondingly to the first ear (313); The second supporting part (320) comprises a second sliding block (322) and two second ears (323), the two second ears (323) are connected to two ends of the second sliding block (322) along a third direction (103), the third driving matching surface (321) is arranged on the second ear (323), and one end of the second bearing part towards the second supporting part (320) is respectively provided with two second matching parts (220), the second matching part (220) is arranged correspondingly to the second ear (323); The third direction (103) is parallel to the disc surface of the chassis (100) and perpendicular to the first direction (101).

9. The truck of claim 1, wherein, The trolley 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 to 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 chassis (100) is connected to the bearing platform (200).

10. The truck of claim 9, wherein, The trolley comprises a plurality of guide mechanisms (400), and the plurality of guide mechanisms (400) are arranged at intervals along the edge of the bearing platform (200).

11. The truck of claim 1, wherein, The preset included angle is greater than 0° and less than 90°.

12. 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 the front end of the chassis body (110), and the second rudder wheel (130) and the second walking wheel (150) are rotatably arranged at the rear end of the chassis body (110).

13. The truck of claim 12, 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 walking wheel (150) are rotatably arranged at opposite ends of the floating beam (160).

14. 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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