Material box lifting mechanism and intelligent transport vehicle

Abstract

The utility model provides a workbin lifting mechanism and an intelligent transport vehicle, relates to the technical field of intelligent logistics, and solves the technical problem of low feeding and receiving efficiency of a workbin in the prior art. The material box lifting mechanism and the intelligent transport vehicle comprise a fixing frame, a lifting assembly and a box receiving assembly, the fixing frame is provided with a box receiving station and a plurality of material receiving stations, the lifting assembly and the box receiving assembly are both arranged on the fixing frame, and the box receiving assembly is used for receiving material boxes and conveying the material boxes to the box receiving stations; the lifting assembly moves between the box receiving station and the multiple material receiving stations in a lifting mode and is used for conveying the material boxes on the box receiving station to the material receiving stations. According to the material box lifting mechanism and the intelligent transport vehicle, the feeding efficiency and the receiving efficiency of the material box are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent logistics, in particular to a bin lifting mechanism and an intelligent transport vehicle. Background Art

[0002] With the development of industrial automation, intelligent warehousing has become a development trend in factories. The birth of intelligent robots has greatly liberated the labor force and improved the production efficiency of factories.

[0003] At present, the bin conveying and material receiving are composed of an AGV vehicle body and a fixed frame arranged on the AGV vehicle body. The bin is arranged on the fixed frame, and the bin is moved between a bin conveying line, a material receiving conveying line and a discharging conveying line through the AGV vehicle body, so as to realize the processes of bin receiving, material receiving and discharging of the bin filled with materials.

[0004] However, the processes of bin receiving and discharging mainly rely on manual labor. First of all, this will lead to high labor costs and low automation level; secondly, when receiving the bin, since the bin is in an empty state, manual operation is adopted, which wastes labor costs.

[0005] In addition, the existing fixed frame can only convey one bin at a time to complete material receiving, while in fact, there are often multiple discharging ends at the discharging end of the material receiving production line, and the multiple discharging ends are at different heights. In the prior art, only multiple AGV vehicle bodies and corresponding fixed frames can be used to realize bin material receiving, which leads to a large increase in cost and affects the material receiving efficiency; or, one AGV and a multi-layer fixed frame are used to realize bin material receiving, but the bin loading needs to be completed manually, which wastes labor and has low loading efficiency. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a bin lifting mechanism and an intelligent transport vehicle to solve the technical problem of low bin loading and material receiving efficiency in the prior art. The preferred technical solutions provided by the utility model can produce many technical effects, which will be elaborated below.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] The bin lifting mechanism provided by the utility model includes a fixed frame, a lifting component and a bin receiving component. The fixed frame has a bin receiving station and several material receiving stations, wherein:

[0009] Both the lifting component and the bin receiving component are arranged on the fixed frame. The bin receiving component is used for receiving the bin and conveying the bin to the bin receiving station;

[0010] The lifting component moves up and down between the bin receiving station and several material receiving stations, and is used for conveying the bin on the bin receiving station to the material receiving station.

[0011] Optionally, a plurality of clamping blocks are arranged at the material receiving station, and the plurality of clamping blocks are used for supporting the material box;

[0012] The clamping block is rotationally arranged on the fixing frame through a rotating shaft, and an inclined surface structure is arranged on the clamping block. The inclined surface structure faces the box receiving station. A clamping spring is arranged between the fixing frame and the clamping block. When the lifting assembly drives the material box to move towards the material receiving station by lifting and moving, the material box can drive the clamping block to rotate through the inclined surface structure to squeeze the clamping spring.

[0013] Optionally, the clamping block is of a right triangle structure.

[0014] Optionally, the box receiving assembly includes a plurality of electric rollers, and the plurality of electric rollers are arranged side by side at the box receiving station. The upper surfaces of the plurality of electric rollers form a placing plane.

[0015] Optionally, the box receiving assembly includes a conveying chain assembly, and the conveying chain assembly is arranged at the box receiving station.

[0016] Optionally, the lifting assembly includes a first double-row sprocket assembly and a second double-row sprocket assembly;

[0017] The first double-row sprocket assembly includes a first driving component, a first driving shaft and a first driven shaft. First driving sprockets are arranged at both ends of the first driving shaft, and first driven sprockets are arranged at both ends of the first driven shaft. Two first chains are respectively connected between the two groups of first driving sprockets and the first driven sprockets;

[0018] The second double-row sprocket assembly includes a second driving component, a second driving shaft and a second driven shaft. Second driving sprockets are arranged at both ends of the second driving shaft, and second driven sprockets are arranged at both ends of the second driven shaft. Two second chains are respectively connected between the two groups of second driving sprockets and the second driven sprockets;

[0019] Lifting blocks are arranged at corresponding positions on the two first chains and the two second chains. A lifting protrusion is arranged on the material box. The first driving component drives the first driving shaft, and the second driving component drives the second driving shaft to rotate synchronously, which can drive the four lifting blocks to move up and down synchronously through the lifting protrusion to convey the material box to the material receiving station.

[0020] Optionally, the first driving component includes a first driving motor, and the first driving motor is in transmission connection with the first driving shaft;

[0021] The second driving component includes a second driving motor, and the second driving motor is in transmission connection with the second driving shaft.

[0022] Optionally, at least two receiving stations are provided.

[0023] An intelligent transport vehicle includes a vehicle body and the bin lifting mechanism as described above, and the bin lifting mechanism is arranged on the vehicle body.

[0024] Optionally, the vehicle body is an AGV or an RGV.

[0025] The beneficial effects of the present utility model are as follows: The bin lifting mechanism and the intelligent transport vehicle provided by the present utility model include a fixed frame, a lifting component and a bin receiving component. The fixed frame is provided with a bin receiving station and a plurality of receiving stations. The bin receiving component is used to receive the bin and convey the bin to the bin receiving station, and the lifting component is used to convey the bin on the bin receiving station to the receiving station, so that multiple bins can be received on the fixed frame at the same time, and the reception of multiple bins can be completed automatically, greatly reducing the labor cost and improving the automation degree. Moreover, the position of the bin receiving station is fixed, which can ensure that multiple bins are received on the same bin conveying line, and the multiple bins can be respectively located at the bin receiving station and a plurality of receiving stations to complete the receiving work, significantly reducing the cost and improving the bin loading and receiving efficiency. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0027] Figure 1 is a schematic structural diagram of the present utility model;

[0028] Figure 2 is a schematic structural diagram of the bin of the present utility model;

[0029] Figure 3 is a schematic structural diagram of the lifting stopper of the present utility model;

[0030] Figure 4 is a schematic structural diagram of the clamping block of the present utility model.

[0031] In the figure:

[0032] 100, fixed frame; 200, lifting component; 300, bin receiving component; 400, bin receiving station; 500, receiving station; 600, bin;

[0033] 210. First double-row sprocket assembly; 220. Second double-row sprocket assembly;

[0034] 211. First driving shaft; 212. First driven shaft; 213. First driving sprocket; 214. First driven sprocket; 215. First chain; 216. Lifting stop block;

[0035] 221. Second driving shaft; 222. Second driven shaft; 223. Second driving sprocket; 224. Second driven sprocket; 225. Second chain;

[0036] 310. Electric roller;

[0037] 510. Positioning block; 520. Rotating shaft; 530. Inclined plane structure; 540. Positioning spring;

[0038] 610. Lifting protrusion. Detailed implementation mode

[0039] The following can refer to the attached drawings Figures 1 to 4 and the text content to understand the content of the present invention and the differences between the present invention and the prior art. The following further describes the technical solutions (including the preferred technical solutions) of the present invention by way of the attached drawings and by listing some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in this embodiment are one or several of a variety of optional technical features or optional technical solutions. For the sake of concise description, all alternative technical features and alternative technical solutions of the present invention cannot be exhausted in this document, nor is it convenient to emphasize that each implementation mode of each technical feature is one of the optional multiple implementation modes. Therefore, those skilled in the art should know that: any technical means provided by the present invention can be replaced, or any two or more technical means or technical features provided by the present invention can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution within this embodiment do not limit the protection scope of the present invention. The protection scope of the present invention should include any alternative technical solution that those skilled in the art can think of without creative labor and any new technical solution obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.

[0040] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The utility model provides a bin lifting mechanism and an intelligent transport vehicle that improve the bin loading and receiving efficiency.

[0043] The following Figures 1 to 4 will elaborate on the technical solution provided by the utility model in more detail.

[0044] The utility model provides a bin lifting mechanism, including a fixed frame 100, a lifting assembly 200, and a bin receiving assembly 300. The fixed frame 100 has a bin receiving station 400 and a plurality of material receiving stations 500, where:

[0045] The lifting assembly 200 and the bin receiving assembly 300 are both arranged on the fixed frame 100. The bin receiving assembly 300 is used to receive the bin 600 and transport the bin 600 to the bin receiving station 400;

[0046] The lifting assembly 200 moves up and down between the bin receiving station 400 and a plurality of material receiving stations 500, and is used to transport the bin 600 on the bin receiving station 400 to the material receiving station 500.

[0047] The bin lifting mechanism provided by the present utility model includes a fixed frame 100, a lifting assembly 200, and a bin receiving assembly 300. The fixed frame 100 has a bin receiving station 400 and a plurality of material receiving stations 500. The bin receiving assembly 300 is used to receive the bin 600 and transport the bin 600 to the bin receiving station 400. The lifting assembly 200 is used to transport the bin 600 on the bin receiving station 400 to the material receiving stations 500. Thus, it is realized that multiple bins 600 can be received on the fixed frame 100 at the same time, and the reception of multiple bins 600 can be completed automatically, greatly reducing the labor cost, improving the feeding efficiency, increasing the degree of automation. Moreover, the position of the bin receiving station 400 is fixed, which can ensure that multiple bins 600 are received on the same bin conveying line, and multiple bins 600 can be respectively located on the bin receiving station 400 and a plurality of material receiving stations 500 to complete the material receiving work, significantly reducing the cost and improving the material receiving efficiency.

[0048] In some embodiments of the present utility model, a plurality of clamping blocks 510 are arranged on the material receiving stations 500, and the plurality of clamping blocks 510 are used to support the bin 600.

[0049] The clamping block 510 is rotatably arranged on the fixed frame 100 through a rotating shaft 520. A bevel structure 530 is arranged on the clamping block 510, and the bevel structure 530 faces the bin receiving station 400. A clamping spring 540 is arranged between the fixed frame 100 and the clamping block 510. When the lifting assembly 200 moves up and down to drive the bin 600 to move towards the material receiving stations 500, the bin 600 can drive the clamping block 510 to rotate through the bevel structure 530 to compress the clamping spring 540.

[0050] In some of the above embodiments of the present utility model, by arranging a plurality of clamping blocks 510 on the material receiving stations 500, the plurality of clamping blocks 510 can support the bin 600; and the clamping block 510 is rotatably arranged on the fixed frame 100 through a rotating shaft 520. A clamping spring 540 is arranged between the clamping block 510 and the fixed frame 100. A bevel structure 530 is arranged on the clamping block 510. When the bin 600 moves up and down following the lifting assembly 200, the bin 600 can drive the clamping block 510 to rotate and compress the clamping spring 540, so that the bin 600 can pass through the clamping block 510 smoothly. After the bin 600 passes through the clamping block 510, when the lifting assembly 200 returns to the bin receiving station 400, the clamping block 510 can limit the movement of the bin 600, thereby realizing the fixation of the bin 600 on the material receiving stations 500.

[0051] It can be understood that a plurality of the clamping blocks 510 are used to support the material box 600, and the largest dimension of the material box 600 can be placed on a plurality of the clamping blocks 510. In a specific embodiment, lifting protrusions 610 are provided on two opposite sides of the material box 600. When the lifting assembly 200 drives the material box 600 to move from the box receiving station 400 to the material receiving station 500, the lifting protrusions 610 on the material box 600 can push the clamping blocks 510 to rotate through the inclined surface structure 530, so that the material box 600 can smoothly pass through the clamping blocks 510, and then the clamping blocks 510 are reset under the action of the clamping springs 540; when the lifting assembly 200 drives the material box 600 to move from above the material receiving station 500 to the box receiving station 400, due to the blocking of the clamping blocks 510, the material box 600 is supported on the clamping blocks 510, and the lifting assembly 200 continues to descend and can return to the box receiving station 400.

[0052] When two material receiving stations 500 are provided, that is, one box receiving station 400 and two material receiving stations 500 are provided, and the box receiving station 400 is located at the bottom, and the two material receiving stations 500 are sequentially arranged above the box receiving station 400. The box receiving assembly 300 completes the box receiving process. At this time, the material box 600 is located at the box receiving station 400, and the lifting assembly 200 moves upward, driving the material box 600 to move upward and smoothly pass through the two material receiving stations 500 in sequence to reach the uppermost material receiving station 500. At this time, the lifting assembly 200 moves downward back to the box receiving station 400, and the material box 600 can stay on the uppermost material receiving station 500; the lifting assembly 200 receives the material box 600 from the box receiving station 400 and drives the material box 600 to move upward, and the material box 600 can be placed on the material receiving station 500 above the box receiving station 400, so as to realize the lifting and conveying of the material boxes 600 on the two material receiving stations 500.

[0053] Similarly, when a plurality of material receiving stations 500 are provided, the material boxes 600 are sequentially placed downward from the uppermost material receiving station 500, and the lifting and conveying of the material boxes 600 on the plurality of material receiving stations 500 can be completed.

[0054] It should be noted that the box receiving station 400 can also be arranged at the middle position. Correspondingly, the material receiving station 500 can be arranged above or below the box receiving station 400.

[0055] In some embodiments of the present invention, the clamping block 510 is a right triangle structure.

[0056] In some of the above embodiments of the present invention, the clamping block 510 is a right triangle structure. The right triangle structure can ensure the accurate positioning of the clamping block 510 before and after rotation, and the right angle side can be attached to the fixed frame 100 to ensure the stable fixed position of the material box 600.

[0057] In some embodiments of the present utility model, the receiving box assembly 300 includes a plurality of electric rollers 310, and the plurality of electric rollers 310 are arranged side by side on the receiving box station 400, and the upper surfaces of the plurality of electric rollers 310 form a placement plane.

[0058] In some of the above embodiments of the present utility model, the receiving box assembly 300 is composed of a plurality of electric rollers 310 arranged side by side, and the upper surfaces of the plurality of electric rollers 310 form a placement plane. The material box 600 enters above the electric rollers 310 from the conveyor line, and the electric rollers 310 can convey the material box 600 to the receiving box station 400. The electric rollers 310 can complete the conveyance of the material box 600 by rotating. The structure is simple and the conveyance is convenient.

[0059] It should be noted that since the electric roller 310 is a conventional conveying component, it will not be elaborated here. The electric roller 310 can be driven individually, or a plurality of rollers can be connected by a conveyor belt and a unified driving method can be adopted to complete the conveyance.

[0060] In some embodiments of the present utility model, the receiving box assembly 300 includes a conveyor chain assembly, and the conveyor chain assembly is arranged on the receiving box station 400.

[0061] In some of the above embodiments of the present utility model, the receiving box assembly 300 includes a conveyor chain assembly, and the conveyor chain assembly is arranged on the receiving box station 400 for completing the conveyance of the material box 600.

[0062] It should be noted that since the conveyor chain assembly is a conventional conveying component, it will not be elaborated here.

[0063] In some embodiments of the present utility model, the lifting assembly 200 includes a first double-row sprocket assembly 210 and a second double-row sprocket assembly 220;

[0064] The first double-row sprocket assembly 210 includes a first driving component (not shown in the figure), a first driving shaft 211 and a first driven shaft 212. First driving sprockets 213 are arranged at both ends of the first driving shaft 211, and first driven sprockets 214 are arranged at both ends of the first driven shaft 212. Two first chains 215 are respectively connected between the two groups of first driving sprockets 213 and the first driven sprockets 214;

[0065] The second double-row sprocket assembly 220 includes a second drive assembly (not shown in the figure), a second driving shaft 221, and a second driven shaft 222. Second driving sprockets 223 are provided at both ends of the second driving shaft 221, and second driven sprockets 224 are provided at both ends of the second driven shaft 222. Two second chains 225 are respectively connected between two sets of the second driving sprockets 223 and the second driven sprockets 224;

[0066] Lifting blocks 216 are provided at corresponding positions on the two first chains 215 and the two second chains 225. Lifting protrusions 610 are provided on the material box 600. The first drive assembly (not shown in the figure) drives the first driving shaft 211, and the second drive assembly drives the second driving shaft 221 to rotate synchronously, so as to drive the four lifting blocks 216 to move up and down synchronously and convey the material box 600 to the material receiving station 500 through the lifting protrusions 610.

[0067] In some embodiments of the present invention described above, the lifting assembly 200 includes a first double-row sprocket assembly 210 and a second double-row sprocket assembly 220. The first double-row sprocket assembly 210 and the second double-row sprocket assembly 220 are respectively used to lift two ends of the material box 600. The first double-row sprocket assembly 210 and the second double-row sprocket assembly 220 move synchronously, and the lifting and moving of the material box 600 can be completed. The structure is simple. By providing the lifting blocks 216 on the four chains and the lifting protrusions 610 on the material box 600, the lifting blocks 216 drive the material box 600 to move up and down.

[0068] In some embodiments of the present invention, the first drive assembly includes a first drive motor, and the first drive motor is in transmission connection with the first driving shaft 211;

[0069] The second drive assembly includes a second drive motor, and the second drive motor is in transmission connection with the second driving shaft 221.

[0070] In some embodiments of the present invention, at least two material receiving stations 500 are provided.

[0071] The present invention further provides an intelligent transport vehicle, including a vehicle body and the material box lifting mechanism as described above, and the material box lifting mechanism is provided on the vehicle body.

[0072] In some embodiments of the present invention, the vehicle body is an AGV or an RGV.

[0073] The intelligent transport vehicle provided by the present utility model includes a vehicle body and the bin lifting mechanism as described above, which includes a fixed frame 100, a lifting assembly 200, and a bin receiving assembly 300. The fixed frame 100 has a bin receiving station 400 and a plurality of material receiving stations 500. The bin receiving assembly 300 is used to receive a bin 600 and transport the bin 600 to the bin receiving station 400. The lifting assembly 200 is used to transport the bin 600 on the bin receiving station 400 to the material receiving station 500. Thus, it is realized that multiple bins 600 can be received on the fixed frame 100 at the same time, and the reception of multiple bins 600 can be completed automatically, greatly reducing the labor cost and improving the degree of automation. Moreover, the position of the bin receiving station 400 is fixed, which can ensure that multiple bins 600 are received on the same bin conveying line, and multiple bins 600 can be respectively located on the bin receiving station 400 and a plurality of material receiving stations 500 to complete the material receiving work, significantly reducing the cost and improving the material receiving efficiency.

[0074] Embodiment 1:

[0075] The bin lifting mechanism provided by the present utility model is as Figure 1 shown, and includes a fixed frame 100, a lifting assembly 200, and a bin receiving assembly 300. The fixed frame 100 has a bin receiving station 400 and two material receiving stations 500. The bin receiving assembly 300 includes a plurality of electric rollers 310, and the plurality of electric rollers 310 are arranged side by side on the bin receiving station 400. The upper surfaces of the plurality of electric rollers 310 form a placement plane.

[0076] The lifting assembly 200 includes a first double-row sprocket assembly 210 and a second double-row sprocket assembly 220;

[0077] The first double-row sprocket assembly 210 includes a first driving component, a first driving shaft 211, and a first driven shaft 212. Both ends of the first driving shaft 211 are provided with first driving sprockets 213, both ends of the first driven shaft 212 are provided with first driven sprockets 214, and two first chains 215 are respectively connected between the two sets of first driving sprockets 213 and the first driven sprockets 214;

[0078] The second double-row sprocket assembly 220 includes a second driving component, a second driving shaft 221, and a second driven shaft 222. Both ends of the second driving shaft 221 are provided with second driving sprockets 223, both ends of the second driven shaft 222 are provided with second driven sprockets 224, and two second chains 225 are respectively connected between the two sets of second driving sprockets 223 and the second driven sprockets 224;

[0079] As Figures 2 - 3As shown, lifting blocks 216 are provided at corresponding positions on the two first chains 215 and the two second chains 225, and lifting protrusions 610 are provided on the material box 600. The first drive assembly drives the first drive shaft 211, and the second drive assembly drives the second drive shaft 221 to rotate synchronously, capable of driving the four lifting blocks 216 to move up and down synchronously and convey the material box 600 to the material receiving station 500 through the lifting protrusions 610.

[0080] Further, as Figure 4 shown, four positioning blocks 510 are provided on the material receiving station 500. The positioning blocks 510 are of a right triangle structure, and the four positioning blocks 510 are used to support the material box 600;

[0081] The four positioning blocks 510 are all rotatably arranged on the fixing frame 100 through rotating shafts 520. The inclined surface structure 530 on the positioning block 510 faces the box receiving station 400. A positioning spring 540 is provided between the fixing frame 100 and the positioning block 510. When the lifting assembly 200 moves up and down to drive the material box 600 to move towards the material receiving station 500, the material box 600 can drive the positioning block 510 to rotate through the inclined surface structure 530 to compress the positioning spring 540. After the material box 600 moves above the positioning block 510, the positioning spring 540 resets. The lifting assembly 200 moves up and down to drive the material box 600 to move towards the box receiving station 400, and the material box 600 can then be placed on the positioning block 510.

[0082] When loading the material box, first convey the first material box 600 to the uppermost material receiving station 500, and then convey the material box 600 to the lower material receiving station 500 to complete the loading of two material boxes 600, realizing the one-way conveyance of the material box 600.

[0083] The present utility model further provides an intelligent transport vehicle, including an AGV and the material box lifting mechanism as described above, and the material box lifting mechanism is arranged on the AGV.

[0084] In the description of this specification, the description with reference to terms such as "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0085] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A material box lifting mechanism, characterized in that: It includes a fixed frame, a lifting assembly and a box receiving assembly, wherein the fixed frame has a box receiving station and a plurality of material receiving stations, wherein: The lifting assembly and the box receiving assembly are both arranged on the fixed frame, and the box receiving assembly is used to receive the material box and transport the material box to the box receiving station; The lifting assembly is lifted and moved between the box receiving station and a plurality of material receiving stations to transport the material box on the box receiving station to the material receiving station.

2. The material box lifting mechanism according to claim 1, characterized in that: A plurality of positioning blocks are arranged on the material receiving station, and the plurality of positioning blocks are used to support the material box; The locking block is rotatably arranged on the fixing frame by a rotating shaft, and the locking block is provided with an inclined surface structure, which is arranged toward the box receiving station, and a locking spring is provided between the fixing frame and the locking block. When the lifting assembly is lifted and moved to drive the material box to move toward the material receiving station, the material box can drive the locking block to rotate through the inclined surface structure to squeeze the locking spring.

3. The material box lifting mechanism according to claim 2, characterized in that: The positioning block is a right triangle structure.

4. The material box lifting mechanism according to any one of claims 1 to 3, characterized in that: The box connection assembly comprises a plurality of electric rollers, which are arranged side by side on the box connection station, and the upper surfaces of the electric rollers form a storage plane.

5. The material box lifting mechanism according to any one of claims 1 to 3, characterized in that: The box connection assembly includes a conveyor chain assembly, and the conveyor chain assembly is arranged on the box connection station.

6. The material box lifting mechanism according to any one of claims 1 to 3, characterized in that: The lifting assembly includes a first double-row sprocket assembly and a second double-row sprocket assembly; The first double-row sprocket assembly comprises a first driving assembly, a first driving shaft and a first driven shaft, both ends of the first driving shaft are provided with first driving sprockets, both ends of the first driven shaft are provided with first driven sprockets, and two first chains are respectively connected between two groups of the first driving sprockets and the first driven sprockets; The second double-row sprocket assembly includes a second driving assembly, a second driving shaft and a second driven shaft, both ends of the second driving shaft are provided with second driving sprockets, both ends of the second driven shaft are provided with second driven sprockets, and two second chains are respectively connected between the two sets of the second driving sprockets and the second driven sprockets; Lifting blocks are provided at corresponding positions on the two first chains and the two second chains, and a lifting protrusion is provided on the material box. The first driving component drives the first active shaft and the second driving component drives the second active shaft to rotate synchronously, and the four lifting blocks can be driven to move up and down synchronously to transport the material box to the material receiving station through the lifting protrusion.

7. The material box lifting mechanism according to claim 6, characterized in that: The first driving assembly includes a first driving motor, and the first driving motor is drivingly connected to the first driving shaft; The second driving assembly includes a second driving motor, and the second driving motor is drivingly connected to the second driving shaft.

8. The material box lifting mechanism according to any one of claims 1 to 3, characterized in that: At least two material receiving stations are provided.

9. An intelligent transport vehicle, characterized in that: It comprises a vehicle body and a material box lifting mechanism as described in any one of claims 1 to 8, wherein the material box lifting mechanism is arranged on the vehicle body.

10. The intelligent transport vehicle according to claim 9, characterized in that: The vehicle body is an AGV or an RGV.

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