Unmanned transport vehicle

Abstract

The unmanned transport vehicle comprises a vehicle body, a fixed-point rotating device, a translation device and a driving assembly, a carriage is arranged on the vehicle body, box doors capable of being opened outwards are arranged on the two sides of the carriage, and two sliding frames capable of sliding out of and sliding into the box doors through the translation device are arranged on the front inner wall of the carriage; a rotating frame is rotationally connected to the sliding frame, a plurality of sets of positioning assemblies are arranged on the rotating frame in the vertical direction, the rotating frame can receive stacked turnover baskets from two stacking lines at the same time, the turnover baskets are lifted to be separated from the stacking lines through a supporting assembly and a clamping assembly, meanwhile, the turnover baskets are clamped, and the turnover baskets are prevented from sliding off; the conveying belt can be used for arranging the turnover baskets transferred by the rotating frame into rows, so that the aim of transferring a plurality of turnover baskets at one time is fulfilled; when the box door is closed, the fixing assemblies can be driven to fill the gaps between the front and back adjacent turnover baskets on the conveying belt, and the two stacks of turnover baskets arranged side by side left and right are clamped and fixed.

Description

Technical Field

[0001] The present invention relates to the field of transportation, and in particular to an unmanned transport vehicle. Background Art

[0002] Some existing products such as wine, cola, vinegar, etc. that are packaged in glass containers need to be placed in turnover baskets after production and processing, and then stacked on the palletizing line and placed on the corresponding pallet. The stacks of turnover baskets are transported to the warehouse for storage by forklifts.

[0003] Since this type of turnover basket has a high center of gravity after stacking, some existing general forklifts only use the fork head to insert into the bottom of the pallet when transporting these stacked turnover baskets, and then carry several turnover baskets on the pallet. There is a lack of other side fixing structures, which makes it easy for the turnover baskets to tip over and slide, and injure workers.

[0004] Secondly, existing forklifts can only transfer one stack of turnover baskets at a time. When dealing with a large number of transfer tasks on multiple stacking lines, multiple forklifts are required to work together or perform multiple transports to complete the transportation, resulting in low transportation efficiency. Summary of the Invention

[0005] The present invention aims to provide an unmanned transport vehicle to solve the problems mentioned in the above background technology.

[0006] The camshaft is actuated by a lever, which is configured to move the load shelf upwards to move the load shelf upwards, and the camshaft is configured to move the load shelf upwards to move the load shelf downwards.

[0007] There are also fixing components on both sides of the carriage. When the box door is closed, the fixing components are driven to fill the gap between the front and rear adjacent turnover baskets on the conveyor belt, and clamp and fix the two stacks of turnover baskets side by side on the left and right.

[0008] Preferably, the translation device includes a motor, a slide rail and a rack 1. A rack 1 and two upper and lower symmetrical slide rails are provided on the front inner wall of the carriage. The slide is slidably connected to the slide rails. The motor is fixedly connected to the slide, and its output shaft is fixedly connected to a gear 1, and the gear 1 is engaged with the rack 1.

[0009] Preferably, the fixed-point rotation device includes a support shaft, a rotating shaft, a second rack and a positioning groove, the support shaft and the rotating shaft are both rotatably connected to the slide, the rotating frame is fixedly connected to the support shaft, the support shaft and the rotating shaft are both fixedly connected with synchronous wheels, the synchronous wheels are connected by a synchronous belt, the rotating shaft is also fixedly connected with a second gear, the second gear is meshed with the second rack, the second rack is fixedly connected to the box door, the positioning groove is fixedly connected to the front inner wall of the car, and the side of the rotating frame is rotatably connected with a roller.

[0010] Preferably, the roller is inserted into the positioning groove when the rotating frame rotates to the horizontal direction and slides in the positioning groove. When the second gear is engaged with the second rack, the roller is disengaged from the positioning groove.

[0011] Preferably, the driving device includes an electric push rod and a driving frame. The driving frame is arranged on the outside of the rotating frame and can move up and down along the vertical direction of the rotating frame. Two electric push rods are fixedly connected to the rear side of the rotating frame. The output shafts of the electric push rods are fixedly connected to the driving frame. The rear side of the rotating frame is provided with a photoelectric switch facing the peripheral box.

[0012] Preferably, the support assembly includes a support plate and a push plate, one end of the support plate is hinged to the rotating frame, the other end is hinged to the upper end of the push plate, the lower end of the push plate is hinged to the driving frame, and a pulley is rotatably connected to the support plate.

[0013] Preferably, the clamping assembly includes a clamping block and a pushing block, the clamping block is provided with an inclined surface, the bottom of the clamping block is fixedly connected to a sliding rod, the sliding rod passes through a limiting plate on the rotating frame and is fixedly connected to a bottom plate, a spring is sleeved on the sliding rod between the bottom plate and the limiting plate, and the pushing block is provided below the bottom plate and is fixedly connected to the driving frame.

[0014] Preferably, the fixing assembly includes side panels and inner push frames, a plurality of raised blocks are equidistantly provided on the inner wall of the side panel, and a support rod is fixedly connected to the outer wall thereof, the support rod passes through the side wall of the carriage and is fixedly connected to the side wall of the carriage, a stop block is fixedly connected to the outer end of the support rod, a spring 2 is sleeved on the support rod between the stop block and the carriage, a plurality of inner push frames are provided on the box door, the front end of the inner push frame is rotatably connected to a sliding roller, and a slot is provided on the box door for the inner push frame and the sliding roller to pass through.

[0015] The advantages of the present invention are:

[0016] By setting a slide that can slide outward and setting a rotating frame on the slide that can automatically rotate at different positions, when docking with the palletizing line, it is possible to simultaneously receive stacks of turnover baskets from two palletizing lines, and use the support assembly and the clamping assembly to lift the turnover basket away from the palletizing line and clamp the turnover basket at the same time to prevent the turnover basket from slipping;

[0017] Afterwards, the motor drives the carriage to slide into the car, automatically rotating the rotating frame to the horizontal direction, and finally placing two stacks of turnover baskets on the conveyor belt, so that the turnover baskets coming from both sides can be pressed against each other to prevent shaking during the transportation process. The conveyor belt is then used to arrange the turnover baskets in rows. When unloading, it is only necessary to reversely transport the turnover baskets one by one out of the car, thus achieving the purpose of transporting multiple turnover baskets at one time.

[0018] When the box door is closed, the fixing component can be driven to fill the gap between the front and rear adjacent turnover baskets on the conveyor belt. On the one hand, the front and rear side walls of the turnover basket can be fixed, and on the other hand, two stacks of turnover baskets side by side can be clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure when the rotating rack is longitudinally prepared to receive the turnover basket;

[0020] Figure 2 This is a structural diagram of the rotating frame being located transversely in the carriage;

[0021] Figure 3 is a schematic diagram of the various structures on the back of the rotating frame when it is located in the carriage;

[0022] Figure 4 This is a schematic diagram of the structure of the rotating rack when it receives or unloads the turnover basket longitudinally;

[0023] Figure 5 for Figure 4 Schematic diagram from another perspective;

[0024] Figure 6 A front view of the turnover basket after the support assembly and the clamping assembly are fixed;

[0025] Figure 7 is a schematic structural diagram of the clamping assembly;

[0026] Figure 8 A partial structural diagram of the fixed component.

[0027] In the figure: 1, vehicle body; 2, fixed-point rotating device; 21, support shaft; 22, rotating shaft; 23, rack 2; 24, positioning groove; 25, synchronous wheel; 26, gear 2; 27, roller;

[0028] 3. Translation device; 31. Motor; 32. Slide rail; 33. Rack 1; 34. Gear 1;

[0029] 4. Drive assembly; 41. Electric push rod; 42. Drive frame; 43. Photoelectric switch;

[0030] 5. Carriage; 51. Door; 511. Missing slot;

[0031] 6. Support assembly; 61. Support plate; 62. Push plate; 63. Pulley;

[0032] 7. Clamping assembly; 71. Clamping block; 711. Tilt; 72. Push block; 73. Slide bar; 74. Limit plate; 75. Bottom plate; 76. Spring 1;

[0033] 8. Conveyor belt; 9. Slide; 91. Rotating rack; 10. Turnover basket; 11. Palletizing line;

[0034] 12. Fixed assembly; 121. Side plate; 122. Inner push frame; 123. Protruding block; 124. Support rod; 125. Stop block; 126. Spring 2; 127. Sliding roller. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects of the invention easier to understand, the invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 7 As shown, an unmanned transport vehicle includes a vehicle body 1, a fixed-point rotating device 2, a translation device 3 and a driving component 4. The vehicle body 1 is provided with a carriage 5, which is an existing AGV vehicle. Both sides of the carriage 5 are provided with doors 51 that can be opened outwards. The front inner wall of the carriage 5 is provided with two slides 9 that can slide out of and into the doors 51 through the translation device 3. The slide 9 is rotatably connected to a U-shaped rotating frame 91, and the rotating frame 91 is provided with several groups of positioning components in the vertical direction. The positioning assembly consists of two support assemblies 6 and a clamping assembly 7. The support assemblies 6 are located on both sides of the rotating frame 91, and the clamping assembly 7 is located on the rear side of the rotating frame 91. The driving device is used to drive the support assemblies 6 to support the turnover basket 10 and use the clamping assembly 7 to clamp the turnover basket 10. The fixed-point rotating device 2 rotates the rotating frame 91 to the horizontal direction when the rotating frame 91 moves into the carriage 5, and rotates it to the longitudinal direction when the rotating frame 91 moves out of the carriage 5. A conveyor belt 8 is provided at the bottom of the carriage 5.

[0037] The carriage 51 is also provided with fixing components 12 on both sides. When the box door 51 is closed, the fixing components 12 are driven to fill the gap between the front and rear adjacent turnover baskets 10 on the conveyor belt 8, and clamp and fix the two stacks of turnover baskets 10 side by side on the left and right.

[0038] In this embodiment, the fixing assembly 12 includes a side panel 121 and an inner push frame 122. A number of raised blocks 123 are equidistantly provided on the inner wall of the side panel 121, and a support rod 124 is fixedly connected to the outer wall thereof. The support rod 124 passes through the side wall of the carriage 5 and is fixedly connected to the side wall of the carriage 5. A stopper 125 is fixedly connected to the outer end of the support rod 124. A spring 126 is sleeved on the support rod 124 between the stopper 125 and the carriage 5. A number of inner push frames 122 are provided on the box door 51. The front end of the inner push frame 122 is rotatably connected to a sliding roller 127. Compared with the direct contact between the inner push frame 122 and the side panel 121, the contact between the sliding roller 127 and the side panel 121 has less rolling friction and less resistance. The box door 51 is provided with a slot for the inner push frame 122 and the sliding roller 127 to pass through. Figure 2 As shown, when the door 51 is closed, the rollers 127 on the inner push frame 122 act on the side panels 121, causing the side panels 121 to move toward the turnover basket 10 under the support and guidance of the support rods 124. The second spring 126 is compressed under the action of the stopper 125 and the carriage 5, and the protrusions 123 are inserted into the gap between the two adjacent stacks of turnover baskets 10, which can fix the turnover baskets 10 between the protrusions 123 and further improve the stability of the turnover baskets 10 during transportation. When the door 51 is opened, the second spring 126 is released, acting on the stopper 125, causing the side panels 121 to automatically move to the sides, releasing the turnover baskets 10 from their fixed state on the conveyor belt, allowing the turnover baskets 10 to move along the conveyor belt to the door 51 for unloading.

[0039] In this embodiment, the translation device 3 includes a motor 31, a slide rail 32 and a rack 33. A rack 33 and two upper and lower symmetrical slide rails 32 are provided on the front inner wall of the carriage 5. The slide 9 is slidably connected to the slide rail 32. The motor 31 is fixedly connected to the slide 9, and its output shaft is fixedly connected to a gear 34. The gear 34 is engaged with the rack 33.

[0040] In this embodiment, the fixed-point rotation device 2 includes a support shaft 21, a rotating shaft 22, a rack 23 and a positioning groove 24. The support shaft 21 and the rotating shaft 22 are both rotatably connected to the slide 9. The rotating frame 91 is fixedly connected to the support shaft 21. The support shaft 21 and the rotating shaft 22 are both fixedly connected with a synchronous wheel 25. The synchronous wheels 25 are connected by a synchronous belt. The rotating shaft 22 is also fixedly connected with a gear 26. The gear 26 is engaged with the rack 23. The rack 23 is fixedly connected to the box door 51. The positioning groove 24 is fixedly connected to the front inner wall of the carriage 5. The side of the rotating frame 91 is rotatably connected with a roller 27.

[0041] In this embodiment, the roller 27 is inserted into the positioning groove 24 when the rotating frame 91 rotates to the horizontal direction and slides in the positioning groove 24 to ensure that the rotating frame 91 can maintain a horizontal state to enter the carriage 5 or be pulled out of the carriage 5. When the gear 2 26 is engaged with the rack 2 23, the roller 27 disengages from the positioning groove 24, so that the rotating frame 91 changes from a horizontal state to a longitudinal state, that is, a state in the same direction as the palletizing line 11.

[0042] In this embodiment, the drive device includes an electric push rod 41 and a drive frame 42. The drive frame 42 is located outside the rotating frame 91 and can move up and down vertically along the rotating frame 91. Two electric push rods 41 are fixedly connected to the rear side of the rotating frame 91. The output shafts of the electric push rods 41 are fixedly connected to the drive frame 42. A photoelectric switch 43 facing the turnover box is provided on the rear side of the rotating frame 91. The photoelectric switch 43 can detect whether the turnover basket 10 has entered and is close to the rear inner wall of the rotating frame 91.

[0043] In this embodiment, the support assembly 6 includes a support plate 61 and a push plate 62. One end of the support plate 61 is hinged to the rotating frame 91, and the other end is hinged to the upper end of the push plate 62. The lower end of the push plate 62 is hinged to the drive frame 42. A pulley 63 is rotatably connected to the support plate 61. The pulley 63 is used to align the turnover basket 10 with the center of the rotating frame 91.

[0044] In this embodiment, the clamping assembly 7 includes a clamping block 71 and a pushing block 72. The clamping block 71 is provided with an inclined surface 711. The bottom of the clamping block 71 is fixedly connected to a sliding rod 73. The sliding rod 73 passes through the limiting plate 74 on the rotating frame 91 and is fixedly connected to the bottom plate 75. A spring 76 is sleeved on the sliding rod 73 between the bottom plate 75 and the limiting plate 74. The pushing block 72 is arranged below the bottom plate 75 and is fixedly connected to the driving frame 42.

[0045] Working process and principle:

[0046] When receiving turnover baskets 10 from palletizing lines 11, the logistics vehicle is located between two palletizing lines 11 and can simultaneously receive turnover baskets 10 from both palletizing lines 11. The turnover basket 10 is a rectangular parallelepiped frame structure with an open top. Strip-shaped notches are provided on each of its four longitudinal sides to facilitate manual handling. The present invention utilizes a rotating frame 91 to constrain the turnover basket 10 as a whole, and then utilizes a support assembly 6 and a clamping assembly 7 to support and position the notches, thereby securing the turnover basket 10.

[0047] The transfer method using this device is as follows:

[0048] Step 1: Move the carriage 9 out of the box door 51 to receive the turnover basket 10. The specific method is as follows:

[0049] First, the motor 31 drives the gear 1 34 to rotate, and the meshing action of the rack 1 33 drives the slide 9 to move toward the box door 51. Initially, the roller 27 is located in the positioning groove 24. Therefore, while the positioning groove 24 constrains the roller 27, the two rotating frames 91 remain open and facing each other and move laterally outward from the car 5. When the roller 27 just slides out of the positioning groove 24, the gear 2 26 begins to contact the rack 2 23.

[0050] At this time, the positioning groove 24 no longer has a restraining effect on the roller 27, so when the gear 26 starts to contact the rack 23, the rotating shaft 22 rotates, and the support shaft 21 is driven to rotate through the synchronous wheel 25 and the synchronous belt. The rotating frame 91 fixed to the support shaft 21 will gradually rotate outward from the horizontal direction until it becomes longitudinal, that is, the same as the conveying direction of the stacking line 11. The opening of the rotating frame 91 is aligned with the stacking line 11, and the motor 31 stops at the same time.

[0051] Step 2: Fix the turnover basket 10. The specific method is as follows:

[0052] When the turnover basket 10 on the palletizing line 11 is transported to the inside of the rotating frame 91 along the palletizing line 11 and contacts the photoelectric switch 43 on the inner wall of the rear side of the rotating frame 91, the electric push rod 41 starts and extends, the driving frame 42 rises, and pushes the support plate 61 to rotate from bottom to top in the gap of the turnover basket 10 through the push plate 62. When the support plate 61 contacts the turnover basket 10, the turnover basket 10 will be lifted up. The rollers 27 on the support plates 61 on both sides can play a role in centering the turnover basket 10, so that the turnover basket 10 moves to the center position, reserving space for the position deviation of the turnover basket 10. When the support plate 61 reaches a horizontal state, the electric push rod 41 is closed.

[0053] While the support assembly 6 is working, the rising drive frame 42 drives the push block 72 to rise, and the push block 72 contacts the bottom plate 75, and pushes the clamping block 71 to rise through the slide rod 73. When the inclined surface 711 on the clamping block 71 contacts the turnover basket 10, it can promote the turnover basket 10 to move closer to the inner wall of the rotating frame 91. Finally, the turnover basket 10 is clamped between the clamping block 71 and the inner wall of the rotating frame 91 to achieve fixation, which can prevent the turnover basket 10 from slipping or tipping over when the turnover basket 10 is transported.

[0054] Step 3: Use the slide 9 and the rotating frame 91 to transfer the fixed turnover basket 10 to the top of the conveyor belt 8, and make the two adjacent turnover baskets 10 on the left and right press against each other, and finally place them on the conveyor belt 8. The specific method is as follows:

[0055] The motor 31 reverses and drives the slide 9 to slide into the carriage 5. The gear 2 26 engages with the rack 2 23. When they finally disengage, the rotating frame 91 rotates to a horizontal state, and the pulley 63 re-enters the positioning groove 24, so that the rotating frame 91 can maintain the horizontal state and send the turnover basket 10 into the carriage 5, so that the two adjacent turnover baskets 10 on the left and right can approach each other and finally press against each other to prevent shaking during transportation, improve the stability of transportation, and avoid the collapse of stacked turnover boxes 10 during transportation. Then the electric push rod 41 shortens and the turnover basket 10 drops onto the conveyor belt 8.

[0056] The conveyor belt 8 starts to move the turnover basket 10 a certain distance to the rear side of the carriage 5 to make room for subsequent turnover baskets 10 to enter the carriage 5. This is repeated several times until the number of turnover baskets 10 reaches the maximum value that the carriage 5 can accommodate. The slide 9 then remains in the carriage 5.

[0057] Then the box door 51 is closed, and the sliding roller 127 on the inner push frame 122 acts on the side plate 121, so that the side plate 121 moves toward the turnover basket 10 under the support and guidance of the support rod 124. The protruding blocks 123 are inserted into the two adjacent stacks of turnover baskets 10 in front and behind, so that the turnover baskets 10 can be fixed between the protruding blocks 123, further improving the stability of the turnover basket 10 during transportation.

[0058] Step 4: Unloading of turnover basket 10

[0059] The vehicle 1 starts to transport the turnover basket 10 to the warehouse. When the door 51 opens, the second spring 126 releases pressure, acting on the stopper 125, causing the side panels 121 to automatically move to the sides, releasing the turnover basket 10 from its fixed position on the conveyor belt, allowing the turnover basket 10 to move along the conveyor belt to the door 51 for unloading.

[0060] Afterwards, the support assembly 6 and the clamping assembly 7 fix the turnover basket 10, and the slide 9 slides out again. In the process, the turnover basket 10 is pulled out from the carriage 5 again and rotated 90 degrees by the rotating frame 91. Then, the support assembly 6 and the clamping assembly 7 are released, so that the turnover basket 10 is placed in the corresponding area. Then, the conveyor belt 8 transports the turnover basket 10 behind to the position of the turnover basket 10 that has just been pulled out, so that the rotating frame 91 can take the material. Repeat the above operation until all turnover baskets 10 are taken out of the carriage 5 in turn.

[0061] It is understood from common technical knowledge that the present invention may be implemented through other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications that fall within the scope of the present invention or are equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. An unmanned transport vehicle, characterized in that: The invention comprises a vehicle body (1), a fixed-point rotating device (2), a translation device (3) and a driving assembly (4); the vehicle body (1) is provided with a carriage (5); both sides of the carriage (5) are provided with doors (51) that can be opened outwards; two slides (9) are provided on the front inner wall of the carriage (5) and can slide out of and into the doors (51) through the translation device (3); the slides (9) are rotatably connected to a U-shaped rotating frame (91); the rotating frame (91) is provided with a plurality of positioning assemblies in the vertical direction; the positioning assemblies are composed of two supporting assemblies (6) and The invention relates to a vehicle frame (91) and a vehicle frame (92) comprising a plurality of fixed-point rotating devices (2). The fixed-point rotating device (2) is composed of a clamping assembly (7), the supporting assembly (6) is located on both sides of the rotating frame (91), the clamping assembly (7) is located on the rear side of the rotating frame (91), the driving device is used to drive the supporting assembly (6) to support the turnover basket (10), and use the clamping assembly (7) to clamp the turnover basket (10), the fixed-point rotating device (2) rotates the rotating frame (91) to the horizontal direction when the rotating frame (91) moves into the carriage (5), and rotates the rotating frame (91) to the longitudinal direction when the rotating frame (91) moves out of the carriage (5), and a conveyor belt (8) is provided at the bottom of the carriage (5); The carriage (51) is also provided with fixing components (12) on both sides. When the box door (51) is closed, the fixing components (12) are driven to fill the gap between the front and rear adjacent turnover baskets (10) on the conveyor belt (8) and clamp and fix the two stacks of turnover baskets (10) arranged side by side on the left and right.

2. The unmanned transport vehicle according to claim 1, characterized in that: The translation device (3) includes a motor (31), a slide rail (32) and a rack (33). A rack (33) and two upper and lower symmetrical slide rails (32) are provided on the front inner wall of the carriage (5). The slide (9) is slidably connected to the slide rails (32). The motor (31) is fixedly connected to the slide (9), and its output shaft is fixedly connected to a gear (34). The gear (34) is meshed with the rack (33).

3. The unmanned transport vehicle according to claim 1, characterized in that: The fixed-point rotating device (2) comprises a support shaft (21), a rotating shaft (22), a second rack (23) and a positioning groove (24); the support shaft (21) and the rotating shaft (22) are both rotatably connected to the slide (9); the rotating frame (91) is fixedly connected to the support shaft (21); the support shaft (21) and the rotating shaft (22) are both fixedly connected with a synchronous wheel (25); the synchronous wheels (25) are connected via a synchronous belt; the rotating shaft (22) is also fixedly connected with a second gear (26); the second gear (26) is meshed with the second rack (23); the second rack (23) is fixedly connected to the box door (51); the positioning groove (24) is fixedly connected to the front inner wall of the carriage (5); and the side surface of the rotating frame (91) is rotatably connected with a roller (27).

4. The unmanned transport vehicle according to claim 3, characterized in that: The roller (27) is inserted into the positioning groove (24) when the rotating frame (91) rotates to the horizontal direction and slides in the positioning groove (24). When the second gear (26) is engaged with the second rack (23), the roller (27) is disengaged from the positioning groove (24).

5. The unmanned transport vehicle according to claim 1, characterized in that: The driving device comprises an electric push rod (41) and a driving frame (42). The driving frame (42) is arranged on the outside of the rotating frame (91) and can move up and down along the vertical direction of the rotating frame (91). Two electric push rods (41) are fixedly connected to the rear side of the rotating frame (91). The output shafts of the electric push rods (41) are fixedly connected to the driving frame (42). The rear side of the rotating frame (91) is provided with a photoelectric switch (43) facing the peripheral packaging box.

6. The unmanned transport vehicle according to claim 1, characterized in that: The support assembly (6) includes a support plate (61) and a push plate (62), one end of the support plate (61) is hinged to the rotating frame (91), and the other end is hinged to the upper end of the push plate (62), the lower end of the push plate (62) is hinged to the driving frame (42), and a pulley (63) is rotatably connected to the support plate (61).

7. The unmanned transport vehicle according to claim 1, characterized in that: The clamping assembly (7) includes a clamping block (71) and a pushing block (72), wherein the clamping block (71) is provided with an inclined surface (711), and the bottom of the clamping block (71) is fixedly connected to a sliding rod (73), wherein the sliding rod (73) passes through a limiting plate (74) on a rotating frame (91) and is fixedly connected to a bottom plate (75), and a spring (76) is sleeved on the sliding rod (73) between the bottom plate (75) and the limiting plate (74), and the pushing block (72) is provided below the bottom plate (75) and is fixedly connected to the driving frame (42).

8. The unmanned transport vehicle according to claim 1, characterized in that: The fixing assembly (12) includes a side plate (121) and an inner push frame (122), the inner wall of the side plate (121) is equidistantly provided with a plurality of protruding blocks (123), and the outer wall thereof is fixedly connected with a support rod (124), the support rod (124) passes through the side wall of the carriage (5) and is fixedly connected to the side wall of the carriage (5), the outer end of the support rod (124) is fixedly connected with a stopper (125), a spring (126) is sleeved on the support rod (124) between the stopper (125) and the carriage (5), a plurality of inner push frames (122) are provided on the box door (51), the front end of the inner push frame (122) is rotatably connected with a sliding roller (127), and the box door (51) is provided with a slot (511) for the inner push frame (122) and the sliding roller (127) to pass through.

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