A logistics turnover box coding device and method

Abstract

The application provides a logistics turnover box code distribution device and method, and relates to the technical field of logistics equipment.The logistics turnover box code distribution device and method can realize automatic stacking and distribution of logistics turnover boxes, reduce the labor intensity of operators, improve production efficiency, ensure the safety of goods, and reduce equipment cost.The cylinder of the fork mechanism of the logistics turnover box code distribution device drives the first crank to swing, the first crank drives the rotating shaft to rotate, and then drives the second crank to swing, the second crank drives the traction pin to slide to the lower end of the limiting groove, at this time, the lower end of the fork swings towards the middle position of the rack by a set angle, the lower end of the fork abuts against the logistics turnover box, the force direction of the second crank on the traction pin is perpendicular to the sliding direction of the traction pin relative to the limiting groove, the fork is limited from swinging relative to the mounting seat to lock the position of the fork, the fork stably supports the logistics turnover box, and the safety of goods is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of logistics equipment, in particular to a logistics turnover box coding device and method. BACKGROUND

[0002] Turnover boxes are generally used by logistics enterprises to sort, load and transport small goods. After loading small goods into turnover boxes, a plurality of turnover boxes are stacked into a pile, and the stacked turnover boxes are transported to a target position for unloading. Subsequently, empty turnover boxes are transported back and distributed to various workstations for sorting and loading small goods. In the above operation process, the stacking and distribution of logistics turnover boxes are manually stacked and transported, which results in high labor intensity of the operators, low production efficiency and cannot guarantee the safety of the goods. SUMMARY

[0003] The present application aims to provide a logistics turnover box coding device and method to realize automatic stacking and distribution of logistics turnover boxes.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0005] A logistics turnover box coding device comprises:

[0006] a rack;

[0007] a lifting drive mechanism arranged on the rack and used to drive the mounting seat to rise and fall relative to the rack;

[0008] a fork mechanism, one arranged on the left side of the rack and one on the right side of the rack;

[0009] The fork mechanism comprises a mounting seat and a fork. The mounting seat is slidingly fitted to the rack. The upper end of the fork is hingedly connected to the mounting seat. The lower end of the fork can swing at a set angle towards the middle position of the rack or away from the middle position of the rack relative to the mounting seat.

[0010] a conveying mechanism passing through the middle position of the rack and used to convey the logistics turnover boxes to the middle position of the rack or convey the logistics turnover boxes at the middle position of the rack out;

[0011] The lower end of the fork swings at a set angle towards the middle position of the rack so that the lower end of the fork can abut against the logistics turnover boxes. The lower end of the fork swings away from the middle position of the rack so that the lower end of the fork is separated from the logistics turnover boxes.

[0012] Further, the fork mechanism further comprises a pneumatic cylinder. The cylinder body end of the pneumatic cylinder is arranged on the mounting seat. The extension end of the pneumatic cylinder is connected to the fork. The extension end of the pneumatic cylinder extends and retracts relative to the cylinder body end to drive the lower end of the fork to swing at a set angle towards the middle position of the rack or away from the middle position of the rack.

[0013] Further, a limiting slot in the shape of a long hole is formed on the shift fork; the shift fork mechanism further comprises a first crank, a rotating shaft, a second crank, and a traction pin; the cylinder body end of the air cylinder is hingedly connected to a mounting base; the telescopic end of the air cylinder is hingedly connected to one end of the first crank; the rotating shaft is rotatably connected to the mounting base; the other end of the first crank is fixedly connected to the rotating shaft; one end of the second crank is fixedly connected to the rotating shaft; the other end of the second crank is hingedly connected to the traction pin; and the traction pin is slidably fitted in the limiting slot.

[0014] Further, when the lower end of the shift fork swings towards the middle position of the rack by a set angle, the traction pin is located at the lower end of the limiting slot, and the direction of the force exerted by the second crank on the traction pin is perpendicular to the sliding direction of the traction pin relative to the limiting slot.

[0015] When the lower end of the shift fork swings away from the middle position of the rack, the traction pin is located at the upper end of the limiting slot.

[0016] Further, the device further comprises a first proximity sensor and a second proximity sensor; the first proximity sensor can monitor the swinging of the lower end of the shift fork towards the middle position of the rack by a set angle; and the second proximity sensor can monitor the swinging of the lower end of the shift fork away from the middle position of the rack.

[0017] Further, the lifting driving mechanism comprises a driving sprocket, a chain, and a driving motor; the driving sprocket is arranged above the rack; one end of the chain is connected to the driving sprocket; the other end of the chain is connected to the mounting base; the driving motor is arranged on the rack; and the output rotating shaft of the driving motor is connected to the driving sprocket.

[0018] Further, the lifting driving mechanism further comprises a speed reducer; the output rotating shaft of the driving motor is connected to the input shaft of the speed reducer; and the output shaft of the speed reducer is connected to the driving sprocket.

[0019] Further, a slide rail is arranged on the rack; the slide rail is arranged vertically; a slide base is slidably fitted on the slide rail; and the mounting base is arranged on the slide base.

[0020] Further, the conveying mechanism comprises a support frame and a conveying chain arranged on the support frame; the conveying chain is used for placing the logistics turnover boxes.

[0021] A logistics turnover box coding method, which applies the logistics turnover box coding device described above, and selectively automatically performs the stacking or distribution operation on the logistics turnover boxes:

[0022] I. Stacking operation on the logistics turnover boxes;

[0023] When the conveying mechanism conveys the first logistics turnover box to the middle position of the rack, the lifting driving mechanism drives the mounting seat to descend to a set height relative to the rack, the lower end of the fork swings to a set angle towards the middle position of the rack, the lower end of the fork abuts against the logistics turnover box, the lifting driving mechanism drives the mounting seat and the logistics turnover box to ascend to the set height;

[0024] When the conveying mechanism conveys the second and subsequent logistics turnover boxes to the middle position of the rack, the lifting driving mechanism drives the mounting seat and the logistics turnover boxes to descend to a set height relative to the rack, the upper logistics turnover boxes are placed on the lower logistics turnover boxes, the lower end of the fork is away from the middle position of the rack, the lower end of the fork is separated from the logistics turnover box, the lifting driving mechanism drives the mounting seat to continue to descend to a set height relative to the rack, the lower end of the fork swings to a set angle towards the middle position of the rack, the lower end of the fork abuts against the lowermost logistics turnover box, and the lifting driving mechanism drives the mounting seat and the logistics turnover boxes to ascend to the set height;

[0025] II. Logistics turnover box distribution operation;

[0026] The lifting driving mechanism drives the mounting seat and the logistics turnover boxes to descend to a set height relative to the rack, the lowermost logistics turnover box is placed on the conveying mechanism, the lower end of the fork is away from the middle position of the rack, the lower end of the fork is separated from the logistics turnover box, the lifting driving mechanism drives the mounting seat to ascend to a set height relative to the rack, the lower end of the fork swings to a set angle towards the middle position of the rack, the lower end of the fork abuts against the second logistics turnover box from bottom to top, the lifting driving mechanism drives the mounting seat and the upper logistics turnover boxes to ascend to the set height, and the conveying mechanism conveys the lowermost logistics turnover box out.

[0027] The beneficial technical effects of the present application are:

[0028] The logistics turnover box coding device and method can realize automatic stacking and distribution of logistics turnover boxes, reduce the labor intensity of operators, improve production efficiency, ensure the safety of goods, and reduce equipment costs.

[0029] The cylinder of the fork mechanism of the logistics turnover box coding device drives the first crank to swing, the first crank drives the rotating shaft to rotate, and then drives the second crank to swing, the second crank drives the traction pin to slide to the lower end of the limiting groove, at this time, the lower end of the fork swings to a set angle towards the middle position of the rack, the lower end of the fork abuts against the logistics turnover box, the force direction of the second crank on the traction pin is perpendicular to the sliding direction of the traction pin relative to the limiting groove, the fork is prevented from swinging relative to the mounting seat to lock the position of the fork, the stable support of the fork on the logistics turnover box is ensured, and the safety of goods is ensured.

[0030] The logistics turnover box code division device has the advantages of simple and reliable structure, low cost and high application promotion value compared with the traditional code division device. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a front view of the logistics turnover box code division device of the embodiment of the present application.

[0032] Figure 2 It is a side view of the logistics turnover box code division device of the embodiment of the present application.

[0033] Figure 3 It is a front view of the fork mechanism of the embodiment of the present application.

[0034] Figure 4 It is a sectional view of the fork mechanism of the embodiment of the present application along the horizontal direction.

[0035] Figure 5 It is a side view of the fork mechanism of the embodiment of the present application. Figure 1

[0036] Figure 6 It is a side view of the fork mechanism of the embodiment of the present application. Figure 2

[0037] Figure 7 It is a perspective view of the fork mechanism of the embodiment of the present application.

[0038] REFERENCE SIGNS:

[0039] 1, rack, 11, bearing seat, 12, slide rail, 13, slide base, 21, drive sprocket, 22, chain, 23, drive motor, 24, speed reducer, 31, mounting seat, 32, fork, 321, limiting groove, 33, air cylinder, 34, first crank, 35, rotating shaft, 351, bearing, 36, second crank, 37, traction pin, 4, logistics turnover box, 51, first hinge, 52, second hinge, 53, third hinge, 61, support frame, 62, conveying chain, 71, first proximity sensor, 72, second proximity sensor. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and beneficial effects of the present application clearer, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings. Some but not all of the embodiments of the present application will be shown in the drawings. In fact, various embodiments of the present application can be implemented in many different forms, and should not be interpreted as being limited to the embodiments described herein; on the contrary, these embodiments are provided to meet the applicable legal requirements.

[0041] ​​In the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In an embodiment of the present application, a logistics turnover box code sorting device and method are provided, please refer to Figures 1 to 7

[0043] A logistics turnover box code sorting device, comprising a rack 1, a lifting driving mechanism, a fork mechanism and a conveying mechanism.

[0044] The rack 1 is in a frame structure as a whole, and the lifting driving mechanism is arranged above the rack 1 to drive the mounting seat 31 to ascend or descend relative to the rack 1.

[0045] The lifting driving mechanism comprises a driving sprocket 21, a chain 22, a driving motor 23 and a speed reducer 24. The driving sprocket 21 is arranged above the rack 1, one end of the chain 22 is connected to the driving sprocket 21, the other end of the chain 22 is connected to the mounting seat 31, the driving motor 23 is arranged above the rack 1, and the output shaft of the driving motor 23 is connected to the driving sprocket 21.

[0046] The speed reducer 24 is arranged above the rack 1, the output shaft of the driving motor 23 is connected to the input shaft of the speed reducer 24, and the output shaft of the speed reducer 24 is connected to the driving sprocket 21. In this embodiment, a bearing seat 11 is arranged above the rack 1, the output shaft of the speed reducer 24 is connected to the bearing seat 11 through a bearing, and one driving sprocket 21 is arranged at each end of the output shaft of the speed reducer 24.

[0047] The output shaft of the driving motor 23 rotates to drive the driving sprocket 21 to rotate, so as to drive the chain 22 to partially wrap around the driving sprocket 21 or partially detach from the driving sprocket 21, so that the chain 22 drives the mounting seat 31 to ascend or descend.

[0048] One fork mechanism is arranged on the left and right sides of the rack 1 respectively, and each side of the fork mechanism corresponds to two forks 32. The left two forks 32 and the right two forks 32 jointly abut against the logistics turnover box 4 to stably support the logistics turnover box 4.

[0049] The fork mechanism comprises the mounting seat 31, the fork 32, the air cylinder 33, the first crank 34, the rotating shaft 35, the second crank 36 and the traction pin 37.

[0050] ​The mounting base 31 is slidingly fitted to the frame 1. Specifically, the frame 1 is provided with a sliding rail 12 arranged vertically, and the sliding rail 12 is slidingly fitted with a sliding seat 13. The mounting base 31 is arranged on the sliding seat 13.

[0051] The shift fork 32 has an L-shaped cross section. The upper end of the shift fork 32 is hingedly connected to the upper end of the mounting base 31 via a first hinge 51. The lower end of the shift fork 32 can swing at a set angle towards or away from the middle position of the frame 1 relative to the mounting base 31.

[0052] The cylinder body end of the air cylinder 33 is arranged on the mounting base 31. The telescopic end of the air cylinder 33 is connected to the shift fork 32. The telescopic end of the air cylinder 33 is extended or retracted relative to the cylinder body end to drive the lower end of the shift fork 32 to swing at a set angle towards or away from the middle position of the frame 1. Figure 5 Figure 6

[0053] The shift fork 32 is provided with a limiting slot 321 in the form of a long hole structure. The cylinder body end of the air cylinder 33 is hingedly connected to the mounting base 31 via a second hinge 52. The telescopic end of the air cylinder 33 is hingedly connected to one end of the first crank 34 via a third hinge 53. The rotating shaft 35 is rotatably connected to the mounting base 31 via a bearing 351. The other end of the first crank 34 is assembled and connected to one end of the rotating shaft 35. One end of the second crank 36 is fixedly connected to the rotating shaft 35. The other end of the second crank 36 is hingedly connected to the traction pin 37. The traction pin 37 is slidingly fitted in the limiting slot 321.

[0054] When the telescopic end of the air cylinder 33 is extended relative to the cylinder body end, the first crank 34 is driven to swing towards the middle position of the frame 1. The first crank 34 drives the rotating shaft 35 to rotate forward relative to the mounting base 31. The rotating shaft 35 drives the second crank 36 to swing towards the middle position of the frame 1. The traction pin 37 slides from the upper end of the limiting slot 321 to the lower end of the limiting slot 321.

[0055] When the telescopic end of the air cylinder 33 is retracted relative to the cylinder body end, the first crank 34 is driven to swing away from the middle position of the frame 1. The first crank 34 drives the rotating shaft 35 to rotate reversely relative to the mounting base 31. The rotating shaft 35 drives the second crank 36 to swing away from the middle position of the frame 1. The traction pin 37 slides from the lower end of the limiting slot 321 to the upper end of the limiting slot 321.

[0056] When the lower end of the shift fork 32 swings at a set angle towards the middle position of the frame 1, the traction pin 37 is located at the lower end of the limiting slot 321. The direction of the force of the second crank 36 on the traction pin 37 is perpendicular to the sliding direction of the traction pin 37 relative to the limiting slot 321. When the lower end of the shift fork 32 swings away from the middle position of the frame 1, the traction pin 37 is located at the upper end of the limiting slot 321.

[0057] ​​The matching relationship between the force direction of the second crank 36 on the traction pin 37 and the sliding direction of the traction pin 37 relative to the limiting groove 321 is perpendicular, so that the limiting fork 32 no longer swings relative to the mounting seat 31 to lock the position of the fork 32, ensuring stable support of the fork 32 on the logistics turnover box 4 and ensuring the safety of the goods. At this time, even if the air cylinder 33 fails, the fork 32 still cannot swing relative to the mounting seat 31.

[0058] The fork mechanism of the embodiment adopts the mechanism that the air cylinder 33 drives the fork 32 to swing through the first crank 34, the rotating shaft 35, the second crank 36, and the traction pin 37, which has lower cost and higher support stability compared with the air cylinder direct pushing mechanism (a mechanism in which the extension end of the air cylinder is directly connected to the fork 32 and drives the fork 32 to push out or retract).

[0059] Specifically, if the air cylinder direct pushing mechanism is adopted, a cylinder with a linear bearing needs to be selected, the air cylinder needs to drive the whole fork 32 to move, and a cylinder with a large diameter needs to be selected, which further increases the cost. Compared with the air cylinder direct pushing mechanism, the fork mechanism of the embodiment adopts the air cylinder swing mode, only needs to select a common cylindrical air cylinder, and the pushing force of the air cylinder only needs to drive the fork 32 to swing, which has lower cost.

[0060] The conveying mechanism passes through the middle position of the rack 1 and is used to convey the logistics turnover box 4 to the middle position of the rack 1 or convey the logistics turnover box 4 at the middle position of the rack 1 out.

[0061] The lower end of the fork 32 swings towards the middle position of the rack 1 by a set angle, so that the lower end of the fork 32 can abut against the gap in the end face of the logistics turnover box 4; and the lower end of the fork 32 moves away from the middle position of the rack 1, so that the lower end of the fork 32 is separated from the logistics turnover box 4.

[0062] The conveying mechanism includes a support frame 61 and a conveying chain 62 arranged on the support frame 61, the conveying chain 62 is used to place the logistics turnover box 4, and the conveying chain 62 operates to convey the logistics turnover box 4 to the middle position of the rack 1 or convey the logistics turnover box 4 at the middle position of the rack 1 out.

[0063] The first proximity sensor 71 and the second proximity sensor 72 are arranged on the rack 1, the first proximity sensor 71 can monitor the swinging of the lower end of the fork 32 towards the middle position of the rack 1 by a set angle, and the second proximity sensor 72 can monitor the swinging of the lower end of the fork 32 away from the middle position of the rack 1. In this way, it is determined whether the lower end of the fork 32 swings to the position, so that the fork 32 stably abuts against and cooperates with the logistics turnover box 4, or the fork 32 is prevented from interfering with the logistics turnover box 4 when the fork 32 does not carry the logistics turnover box 4 to ascend or descend.

[0064] A logistics turnover box code division method, the method selectively automatically stacks or distributes the logistics turnover box 4 by using the logistics turnover box code division device of the embodiment:

[0065] I. Stacking operation of logistics turnover box;

[0066] When the conveying mechanism conveys the first logistics turnover box 4 to the middle position of the rack 1, the lifting driving mechanism drives the mounting seat 31 to descend to a set height relative to the rack 1, the lower end of the fork 32 swings to a set angle towards the middle position of the rack 1, so that the lower end of the fork 32 abuts against the logistics turnover box 4, and the lifting driving mechanism drives the mounting seat 31 and the logistics turnover box 4 to ascend to a set height.

[0067] When the conveying mechanism conveys the second and subsequent logistics turnover boxes 4 to the middle position of the rack 1, the lifting driving mechanism drives the mounting seat 31 and the logistics turnover boxes 4 to descend to a set height relative to the rack 1, so that the logistics turnover boxes 4 above are placed on the logistics turnover box 4 below, the lower end of the fork 32 is away from the middle position of the rack 1, so that the lower end of the fork 32 is separated from the logistics turnover box 4, the lifting driving mechanism drives the mounting seat 31 to continue to descend to a set height relative to the rack 1, the lower end of the fork 32 swings to a set angle towards the middle position of the rack 1, so that the lower end of the fork 32 abuts against the lowermost logistics turnover box 4, and the lifting driving mechanism drives the mounting seat 31 and the logistics turnover boxes 4 to ascend to a set height.

[0068] II. Distribution operation of logistics turnover box;

[0069] The lifting driving mechanism drives the mounting seat 31 and the logistics turnover boxes 4 to descend to a set height relative to the rack 1, so that the lowermost logistics turnover box 4 is placed on the conveying mechanism, the lower end of the fork 32 is away from the middle position of the rack 1, so that the lower end of the fork 32 is separated from the logistics turnover box 4, the lifting driving mechanism drives the mounting seat 31 to ascend to a set height relative to the rack 1, the lower end of the fork 32 swings to a set angle towards the middle position of the rack 1, so that the lower end of the fork 32 abuts against the second logistics turnover box 4 from bottom to top, the lifting driving mechanism drives the mounting seat 31 and the logistics turnover boxes 4 above to ascend to a set height, and the conveying mechanism conveys the lowermost logistics turnover box 4 out.

[0070] So far, the embodiment has been described in detail in combination with the drawings. According to the above description, those skilled in the art should have a clear understanding of the logistics turnover box coding device and method of the present application. The logistics turnover box coding device and method of the present application can realize automatic stacking and distribution of logistics turnover boxes 4, reduce the labor intensity of operators, improve production efficiency, ensure the safety of goods, and reduce equipment cost. The logistics turnover box coding device of the present application, the cylinder 33 of the fork mechanism drives the first crank 34 to swing, the first crank 34 drives the rotating shaft 35 to rotate, and then drives the second crank 36 to swing, the second crank 36 drives the traction pin 37 to slide to the lower end of the limiting groove 321, at this time, the lower end of the fork 32 swings to the middle position of the rack 1 by a set angle, the lower end of the fork 32 abuts against the logistics turnover box 4, the force direction of the second crank 36 to the traction pin 37 is perpendicular to the sliding direction of the traction pin 37 relative to the limiting groove 321, which limits the fork 32 from swinging relative to the mounting seat 31 to lock the position of the fork 32, ensures the stable support of the fork 32 to the logistics turnover box 4, and ensures the safety of the goods. The logistics turnover box coding device of the present application is simple, reliable, low in cost, and has high application and promotion value compared with the traditional coding device.

[0071] Of course, the above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are only examples of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A logistics turnover box sorting device, characterized in that, include: frame; The lifting drive mechanism, mounted on the frame, is used to drive the mounting base to rise and fall relative to the frame; One shift fork mechanism is arranged on each of the left and right sides of the frame; The shift fork mechanism includes a mounting base and a shift fork. The mounting base is slidably fitted with the frame. The upper end of the shift fork is hinged to the mounting base. The lower end of the shift fork can swing relative to the mounting base in the left and right directions toward the middle position of the frame by a set angle, or away from the middle position of the frame. The shift fork mechanism also includes a cylinder, the cylinder body end of which is disposed on the mounting base, and the telescopic end of the cylinder is connected to the shift fork. The telescopic end of the cylinder extends and retracts relative to the cylinder body end to drive the lower end of the shift fork to swing towards the middle position of the frame at a set angle, or away from the middle position of the frame. The shift fork has a limiting groove with an elongated hole structure; the shift fork mechanism also includes a first crank, a rotating shaft, a second crank, and a traction pin; the cylinder body end of the cylinder is hinged to a mounting base, the telescopic end of the cylinder is hinged to one end of the first crank, the rotating shaft is rotatably connected to the mounting base, the other end of the first crank is fixedly connected to the rotating shaft, and one end of the second crank is fixedly connected to the rotating shaft. The other end of the second crank is hinged to a traction pin, which slides into the limiting groove. The telescopic end of the cylinder extends relative to the cylinder body end to drive the first crank to swing toward the middle position of the frame. The first crank drives the rotating shaft to rotate in the positive direction relative to the mounting base. The rotating shaft drives the second crank to swing toward the middle position of the frame. The traction pin slides from the upper end of the limiting groove to the lower end of the limiting groove. The telescopic end of the cylinder retracts relative to the cylinder body end, thereby causing the first crank to swing away from the middle position of the frame. The first crank causes the rotating shaft to rotate in the opposite direction relative to the mounting base. The rotating shaft causes the second crank to swing away from the middle position of the frame. The traction pin slides from the lower end of the limiting groove to the upper end of the limiting groove. When the lower end of the shift fork swings towards the middle position of the frame at a set angle, the traction pin is located at the lower end of the limit groove, and the direction of the force exerted by the second crank on the traction pin is perpendicular to the sliding direction of the traction pin relative to the limit groove; at this time, even if the cylinder fails, the shift fork will still not swing relative to the mounting base. When the lower end of the shift fork is far from the middle position of the frame, the traction pin is located at the upper end of the limit groove; The conveying mechanism passes through the middle of the rack and is used to transport the logistics turnover box to the middle of the rack, or to transport the logistics turnover box out of the middle of the rack; Among them, the lower end of the shift fork swings at a set angle toward the middle position of the frame so that the lower end of the shift fork can abut against the logistics turnover box; the lower end of the shift fork moves away from the middle position of the frame so that the lower end of the shift fork detaches from the logistics turnover box. The cylinder of the shift fork mechanism drives the first crank to swing, which in turn drives the rotating shaft to rotate, which in turn drives the second crank to swing. The second crank drives the traction pin to slide to the lower end of the limit groove. At this time, the lower end of the shift fork swings towards the middle position of the frame at a set angle, and the lower end of the shift fork abuts against the logistics turnover box. The direction of the force exerted by the second crank on the traction pin is perpendicular to the sliding direction of the traction pin relative to the limit groove, which restricts the shift fork from swinging relative to the mounting base and locks the position of the shift fork, ensuring that the shift fork stably supports the logistics turnover box and ensuring the safety of the goods.

2. The logistics turnover box sorting device according to claim 1, characterized in that: It also includes a first proximity sensor and a second proximity sensor; the first proximity sensor can monitor the lower end of the shift fork swinging at a set angle toward the middle position of the frame; the second proximity sensor can monitor the lower end of the shift fork moving away from the middle position of the frame.

3. The logistics turnover box sorting device according to claim 1, characterized in that: The lifting drive mechanism includes a drive sprocket, a chain, and a drive motor. The drive sprocket is located above the frame. One end of the chain is connected to the drive sprocket, and the other end of the chain is connected to the mounting base. The drive motor is located on the frame, and the output shaft of the drive motor is connected to the drive sprocket.

4. The logistics turnover box sorting device according to claim 3, characterized in that: The lifting drive mechanism also includes a reducer, the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the drive sprocket.

5. A logistics turnover box sorting device according to claim 1, characterized in that: The frame is provided with a slide rail, which is arranged vertically. A slide block is slidably fitted on the slide rail, and the mounting base is disposed on the slide block.

6. A logistics turnover box sorting device according to claim 1, characterized in that: The conveying mechanism includes a support frame and a conveyor chain disposed on the support frame, wherein logistics turnover boxes are placed on the conveyor chain.

7. A method for sorting and distributing logistics turnover boxes, using the logistics turnover box sorting and distributing device according to any one of claims 1 to 6, characterized in that, The method selectively and automatically performs palletizing or distribution operations on logistics turnover boxes:

1. Palletizing operations for logistics turnover boxes; When the conveying mechanism transports the first logistics turnover box to the middle position of the frame, the lifting drive mechanism drives the mounting base to descend to a set height relative to the frame, and the lower end of the fork swings towards the middle position of the frame at a set angle so that the lower end of the fork abuts against the logistics turnover box. The lifting drive mechanism drives the mounting base and the logistics turnover box to rise to the set height. When the conveying mechanism transports the second and subsequent logistics turnover boxes to the middle position of the frame, the lifting drive mechanism drives the mounting base and logistics turnover boxes to descend to a set height relative to the frame, placing the upper logistics turnover boxes on the lower logistics turnover boxes. The lower end of the fork moves away from the middle position of the frame, causing the lower end of the fork to detach from the logistics turnover box. The lifting drive mechanism drives the mounting base to continue descending to a set height relative to the frame. The lower end of the fork swings towards the middle position of the frame at a set angle, causing the lower end of the fork to abut against the bottommost logistics turnover box. The lifting drive mechanism then drives the mounting base and logistics turnover boxes to rise to a set height. II. Distribution of logistics turnover boxes; The lifting drive mechanism lowers the mounting base and logistics turnover boxes relative to the frame to a set height, placing the bottom logistics turnover box on the conveying mechanism. The lower end of the fork moves away from the middle of the frame, causing the lower end of the fork to detach from the logistics turnover box. The lifting drive mechanism then raises the mounting base relative to the frame to a set height. The lower end of the fork swings towards the middle of the frame at a set angle, causing the lower end of the fork to abut against the second logistics turnover box from the bottom. The lifting drive mechanism then raises the mounting base and all the logistics turnover boxes above it to a set height, and the conveying mechanism transports the bottom logistics turnover box out.

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