A logistics sorting device for logistics

Abstract

The present invention discloses a logistics sorting device for logistics, which specifically relates to the technical field of logistics sorting, including a belt conveyor for conveying goods, on which a sorting assembly for sorting goods according to their volume is installed, and the output end of the belt conveyor is provided with a large cargo conveyor for conveying large-volume goods and a small cargo conveyor for conveying small-piece goods, and the small cargo conveyor is located directly below the output end of the belt conveyor. The present invention sorts the height of the goods through a height sorting mechanism, and sorts the width and length of the goods through a length and width measuring mechanism, and after three sortings, a comprehensive judgment of the volume of the goods from the three aspects of length, width and height is achieved, which is conducive to improving the accuracy of the final sorting result.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics sorting, and more specifically to a logistics sorting device for logistics. Background Art

[0002] Logistics sorting is a very critical part of the logistics process. It involves classifying and sorting large quantities of parcels or goods according to their destination, size, weight and other characteristics in order to facilitate more efficient transportation and distribution. In particular, it involves the transportation of some large goods. With the rapid development of e-commerce, the online sales of large items such as home appliances and furniture are increasing, which has led to a significant increase in the demand for sorting large goods in the logistics system. In order to ensure the integrity of such large goods in logistics transportation, cartons and foam cotton filling and limiting methods are often used to package them, which will further increase the volume and weight of large goods, resulting in such large goods being large in size and heavy in weight, and placing higher requirements on logistics sorting devices. The working principle of existing logistics sorting devices usually involves the use of sensors such as barcode scanners, RFID tag readers, and visual systems to identify cargo information, and then distribute the goods to the correct sorting gates through mechanical devices (such as conveyor belts, sorting arms, rotating disks, etc.).

[0003] Generally, the size of the goods is manually determined and then manually controlled for sorting. This method is not only inefficient, but also results in an increase in additional labor costs. To solve this problem, a Chinese patent application with the prior art publication number CN111744816A provides a logistics piece sorting device for logistics. The sorting device intercepts large pieces of goods by setting a rotating rod on the conveyor to select large pieces of goods that are higher than the height of the rotating rod.

[0004] However, the size of a piece of cargo should be comprehensively evaluated from the three aspects of length, width and height. Judging from the height alone is one-sided and tends to overlook some long strips of cargo (i.e., the length and width are much greater than the height). These ignored low-height large cargoes will be transferred to the sorting area for small cargoes, resulting in sorting errors, thus affecting the accuracy of the final logistics sorting results. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a logistics sorting device for logistics, which sorts the height of the goods through a height sorting mechanism, and sorts the width and length of the goods through a length and width measuring mechanism. After three sortings, a comprehensive judgment of the volume of the goods from the three aspects of length, width and height is achieved, which is beneficial to improve the accuracy of the final sorting result, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a logistics sorting device for logistics, comprising a belt conveyor for conveying goods, the belt conveyor being equipped with a sorting assembly for sorting goods according to their volume, the output end of the belt conveyor being provided with a large goods conveyor for conveying large goods and a small goods conveyor for conveying small goods, the small goods conveyor being located directly below the output end of the belt conveyor;

[0007] The sorting assembly includes conveyor baffles installed at the front and rear sides of the belt conveyor, a height sorting mechanism is provided between the two conveyor baffles, and goods whose height is lower than the height sorting mechanism directly pass under the height sorting mechanism, and a length and width measuring mechanism embedded in the conveyor baffle is provided on one side of the height sorting mechanism, which is used to measure the length and width of goods whose height is not lower than the height sorting mechanism;

[0008] Two hydraulic cylinders a distributed up and down are fixed on the side of the two length and width measuring mechanisms away from the belt conveyor. The hydraulic cylinders a push the length and width measuring mechanisms to move horizontally on the top of the belt conveyor until they come into contact with the goods whose height is lower than the height sorting mechanism. A barometer a for detecting the change of air pressure inside the length and width measuring mechanisms is provided between the two hydraulic cylinders a to measure the length of the goods whose height is lower than the height sorting mechanism.

[0009] The four corners of the length and width measuring mechanism away from the belt conveyor are fixed with telescopic cylinders, and a barometer b is installed at one end of one of the telescopic cylinders to detect the change of air pressure inside the telescopic cylinder to measure the width of the goods whose height is lower than the height sorting mechanism.

[0010] In a preferred embodiment, the height sorting mechanism is located directly above the belt conveyor, and the height sorting mechanism includes two baffle rods, one end of which is fixed with a rotating shaft, and the rotating shaft is rotatably connected to a mounting seat on the inner wall of the conveyor baffle. Two magnets are embedded in the ends of the two baffle rods that are close to each other, and the magnets installed on the two baffle rods are magnetically attracted together when they come into contact. A touch switch and a laser ranging sensor for controlling the hydraulic cylinder a are fixed at one end of one of the baffle rods, and the laser ranging sensor is located at the bottom of the touch switch, and the laser ranging sensor is embedded inside the baffle rod.

[0011] In a preferred embodiment, the bottom ends of the two rotating shafts are both covered with coil springs, one end of the coil spring is fixed to the outer wall of the rotating shaft, and the other end of the coil spring is fixed to a mounting seat fixed to the inner wall of the conveyor baffle;

[0012] The coil springs are spirally wound around the outside of the rotating shaft, and the spiral directions of the two coil springs are opposite.

[0013] In a preferred embodiment, the length and width measuring mechanism comprises a moving frame embedded in the conveyor baffle, the side of the moving frame away from the belt conveyor is fixed to the output end of the hydraulic cylinder a, a partition is fixed inside the moving frame, the partition and the side of the moving frame away from the belt conveyor form an air pressure monitoring cavity, and the barometer a is used to monitor the air pressure changes inside the air pressure monitoring cavity;

[0014] A plurality of movable balls are inlaid on the side of the movable frame facing the belt conveyor, a plurality of hollow cylinders are fixed on the partition, a connecting rod is fixed on one side of the ball, one end of the connecting rod passes through the hollow cylinder and extends into the interior of the hollow cylinder, a piston plate is fixed on the end of the connecting rod extending into the interior of the hollow cylinder, the piston plate divides the interior of the hollow cylinder into a telescopic chamber a and a telescopic chamber b, the telescopic chamber a is connected to the interior of the air pressure monitoring chamber, and the telescopic chamber b is connected to the outside world. After the cargo whose height is lower than the barrier rod contacts the ball, it pushes the piston plate to move inside the hollow cylinder to increase the air pressure inside the air pressure monitoring chamber.

[0015] In a preferred embodiment, a spring is fixed between the ball and the hollow cylinder to push the ball to return to its original position.

[0016] In a preferred embodiment, the telescopic cylinders are installed at the four corners of a side of the moving frame away from the belt conveyor. Multiple telescopic cylinders installed on the same moving frame are grouped together, and the telescopic cylinders installed on two moving frames are divided into two groups. The two groups of telescopic cylinders extend as the two moving frames move toward the middle, and the internal air pressure of the extended telescopic cylinders decreases.

[0017] The two sets of telescopic cylinders are shortened as the two moving frames move toward the conveyor baffle, and the internal air pressure of the shortened telescopic cylinders increases.

[0018] In a preferred embodiment, the output end of the belt conveyor is provided with a conveyor connection assembly for connecting the small cargo conveyor and the large cargo conveyor;

[0019] The conveyor connection assembly includes a roller conveyor, which is rotatably connected to the output end of the belt conveyor. A hydraulic cylinder b is movably connected to the bottom of the roller conveyor for driving the roller conveyor to rotate up and down. The hydraulic cylinder b is controlled by a touch switch. When the roller conveyor is in a horizontal position, the roller conveyor is connected to a large cargo conveyor for transferring large cargo on the top of the belt conveyor to the large cargo conveyor. The hydraulic cylinder b drives the roller conveyor to rotate downward and then connects to a small cargo conveyor for transferring small cargo on the top of the belt conveyor to the top of the small cargo conveyor.

[0020] In a preferred embodiment, a main control box is installed on the rear side of the input end of the belt conveyor, and the main control box is used to control the operation of the hydraulic cylinder b, the small cargo conveyor and the large cargo conveyor. The air pressure detection results of the barometer a and the air pressure detection results of the barometer b are both uploaded to the main control box.

[0021] Technical effects and advantages of the present invention:

[0022] 1. In view of the one-sided problem in the prior art of sorting large goods, the present invention sorts the height of the goods through a height sorting mechanism and sorts the width and length of the goods through a length and width measuring mechanism. After three sortings, a comprehensive judgment of the volume of the goods from the three aspects of length, width and height is achieved. On the one hand, it can improve the comprehensiveness of the sorting method of the present invention, and on the other hand, it is conducive to improving the accuracy of the final sorting result.

[0023] 2. In the process of transporting goods, the present invention utilizes the side walls of different goods to extrude different numbers of balls to measure the length of the goods, and can also measure the area of ​​the side walls of the goods. The larger the area, the more balls are squeezed, which also indicates that the volume of the goods is larger, further ensuring the accuracy of the sorting results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 A first view of a belt conveyor and a sorting assembly according to the present invention;

[0026] Figure 3 A second view of the belt conveyor and the sorting assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the moving frame of the present invention after it moves;

[0028] Figure 5 It is a first view of the length and width measuring mechanism of the present invention;

[0029] Figure 6 A second view of the length and width measuring mechanism of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the ball, connecting rod, hollow cylinder and spring of the present invention;

[0031] Figure 8 It is a schematic diagram of two baffles of the present invention after being opened;

[0032] Fig. 9 It is a schematic diagram of two baffle bars of the present invention after being closed;

[0033] Fig.10 It is a structural schematic diagram of the conveyor connection assembly of the present invention;

[0034] Fig.11 is a schematic diagram of a large cargo conveyor of the present invention;

[0035] Fig.12 It is a schematic diagram of a small cargo conveyor of the present invention.

[0036] The accompanying drawings are marked as follows:

[0037] 1. Belt conveyor; 2. Sorting components; 3. Small cargo conveyor; 4. Large cargo conveyor; 5. Conveyor connection components; 6. Master control box;

[0038] 21. Conveyor baffle; 22. Height sorting mechanism; 23. Length and width measuring mechanism; 24. Barometer a; 25. Hydraulic cylinder a; 26. Telescopic cylinder; 27. Barometer b;

[0039] 221, stop bar; 222, magnet; 223, touch switch; 224, rotating shaft; 225, coil spring; 226, laser distance sensor;

[0040] 231, moving frame; 232, partition; 233, ball bearing; 234, connecting rod; 235, hollow cylinder; 236, piston plate; 237, spring;

[0041] 51. Roller conveyor; 52. Hydraulic cylinder b. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Refer to the instruction manual Figure 1 , 1012. The present invention provides a logistics sorting device for logistics, comprising a belt conveyor 1 for conveying goods, the belt conveyor 1 being provided with a sorting assembly 2 for sorting goods according to their volume, the output end of the belt conveyor 1 being provided with a large goods conveyor 4 for conveying large goods and a small goods conveyor 3 for conveying small goods, the small goods conveyor 3 being located directly below the output end of the belt conveyor 1, a conveyor connecting assembly 5 for connecting the small goods conveyor 3 and the large goods conveyor 4 being provided at the output end of the belt conveyor 1, a master control box 6 being provided at the rear side of the input end of the belt conveyor 1, the master control box 6 being used to control the operation of the small goods conveyor 3 and the large goods conveyor 4;

[0044] Specific as Fig.10 As shown, the conveyor connection assembly 5 includes a roller conveyor 51, which is rotatably connected to the output end of the belt conveyor 1. The bottom of the roller conveyor 51 is movably connected to a hydraulic cylinder b52 for driving the roller conveyor 51 to rotate up and down. The hydraulic cylinder b52 is also controlled by the main control box 6. When the roller conveyor 51 is in a horizontal position, the output end of the roller conveyor 51 is connected to the input end of the large cargo conveyor 4. The roller conveyor 51 drives itself to transport the large cargo on the top of the belt conveyor 1 to the large cargo conveyor 4. On the conveyor 4, the large cargo conveyor 4 transports the large cargo to the large cargo area of ​​the logistics station; after the hydraulic cylinder b52 drives the roller conveyor 51 to rotate downward, the output end of the roller conveyor 51 is connected with the input end of the small cargo conveyor 3. At this time, since the roller conveyor 51 is tilted downward, the small cargo can move to the top of the small cargo conveyor 3 through the roller conveyor 51 under the action of its own gravity, and then the small cargo conveyor 3 transports the small cargo to the small cargo area of ​​the logistics station, thereby realizing the sorting of large cargo and small cargo.

[0045] The present invention uses the conveying of the belt conveyor 1 and the sorting assembly 2 to sequentially sort the height, width and length of the goods so as to select large goods of various shapes.

[0046] During the sorting process, the height of the goods is first sorted, such as Figure 2-4 As shown, the sorting assembly 2 includes conveyor baffles 21 installed at the front and rear sides of the belt conveyor 1, and a height sorting mechanism 22 is provided between the two conveyor baffles 21. The height sorting mechanism 22 is located directly above the belt conveyor 1. Goods with a height lower than the height sorting mechanism 22 pass directly under the height sorting mechanism 22, while goods with a height not lower than the height sorting mechanism 22 will come into contact with the height sorting mechanism 22, so as to help the present invention sort out large goods with a higher height.

[0047] Furthermore, the specific structure of the height sorting mechanism 22 is as follows: Figure 8 and9 As shown, the height sorting mechanism 22 includes two blocking rods 221, one end of which is fixed with a rotating shaft 224, and the rotating shaft 224 is rotatably connected to a mounting seat on the inner wall of the conveyor baffle 21. The two blocking rods 221 can be rotated above the belt conveyor 1 through the connection of the rotating shaft 224. When the goods whose height is not lower than the blocking rod 221 contact the blocking rod 221, since the position of the blocking rod 221 remains unchanged and the position of the goods will move under the conveyance of the belt conveyor 1, the moving goods can knock open the two originally closed blocking rods 221. The state of the two blocking rods 221 after being knocked open is as shown in FIG. Figure 8 As shown, it means that the height of the cargo is higher than or equal to the set height of the barrier bar 221, and the cargo is large and high;

[0048] In addition, two magnets 222 are embedded in the ends of the two blocking rods 221 that are close to each other. When the magnets 222 installed on the two blocking rods 221 are in contact, they are magnetically attracted together. A touch switch 223 for controlling the operation of the hydraulic cylinder b52 is fixed at one end of one of the blocking rods 221. The touch switch 223 used in the present invention is a normally closed touch switch. When the two blocking rods 221 are closed under the magnetic attraction of the magnets 222 installed on the ends, the touch switch 223 is squeezed. At this time, the touch switch 223 is subjected to pressure and the circuit for controlling the operation of the hydraulic cylinder b52 is disconnected. When the goods knock the two blocking rods 221 open, the touch switch 223 is no longer subjected to pressure and can connect the circuit controlling the hydraulic cylinder b52. At this time, the main control box 6 controls the moving end of the hydraulic cylinder b52 to extend, pushing one end of the roller conveyor 51 to rotate upward to a horizontal position. Fig.10 As shown, the horizontal roller conveyor 51 is connected to the belt conveyor 1 and the large cargo conveyor 4, so that the large cargo can be transported to the top of the large cargo conveyor 4 through the conveyance of the belt conveyor 1 and the transfer of the roller conveyor 51 to achieve sorting;

[0049] In order to ensure the continuous sorting operation, the spacing between the large items in the present invention is as follows: Figure 1 As shown, after the front cargo is output from the top of the roller conveyor 51, the rear cargo will move to the front side of the two baffle bars 221 to ensure that the large cargo sorted by the height sorting mechanism 22 can be moved to the top of the large cargo conveyor 4 and the small cargo can be moved to the top of the small cargo conveyor 3.

[0050] After a cargo passes through between the two blocking bars 221, in order to reset the blocked blocking bars 221, as shown in FIG. Fig. 9As shown, the bottom ends of the two rotating shafts 224 are both covered with coil springs 225, one end of the coil spring 225 is fixed to the outer wall of the rotating shaft 224, and the other end of the coil spring 225 is fixed to a mounting seat fixed to the inner wall of the conveyor baffle 21. The coil spring 225 is spirally wound around the outside of the rotating shaft 224, and the spiral directions of the two coil springs 225 are opposite. The originally knocked-open baffle 221 will synchronously drive the rotating shaft 224 to rotate around the mounting seat on the conveyor baffle 21, and the rotating shaft 224 stretches the coil spring 225 during the rotation process. Therefore, when the goods pass between the two baffle bars 221, the stretched coil spring 225 will drive the baffle bars 221 to rotate in the opposite direction, so that the two baffle bars 221 that have been knocked open can be restored to their original state. Fig. 9 The initial state is shown.

[0051] Next, the width of the goods passing through the bottom of the baffle 221 is detected. The height of this type of goods is lower than the height of the baffle 221. In order to detect whether it has a longer width or length, the present invention provides a length and width measuring mechanism 23 embedded in the conveyor baffle 21 on one side of the height sorting mechanism 22. Two hydraulic cylinders a25 distributed up and down are fixed on the side of the two length and width measuring mechanisms 23 away from the belt conveyor 1. Telescopic cylinders 26 are fixed on the four corners of the side of the length and width measuring mechanism 23 away from the belt conveyor 1. The telescopic cylinders 26 are installed at the four corners of the side of the moving frame 231 away from the belt conveyor 1. Multiple telescopic cylinders 26 installed on the same moving frame 231 are grouped together, and the telescopic cylinders 26 installed on the two moving frames 231 are divided into two groups. The two groups of telescopic cylinders 26 follow the two moving frames 231 to move toward the middle and extend, and the air pressure inside the extended telescopic cylinders 26 decreases. The two groups of telescopic cylinders 26 follow the two moving frames 231 to move toward the conveyor baffle 21 and shorten, and the air pressure inside the shortened telescopic cylinders 26 increases. A barometer b27 is installed at one end of one of the telescopic cylinders 26 to detect the change in air pressure inside the telescopic cylinder 26. When the telescopic cylinder 26 does not extend following the movement of the length and width measuring mechanism 23, the air pressure value inside it is the largest. As the piston rod inside the telescopic cylinder 26 moves together with the length and width measuring mechanism 23, the internal space of the telescopic cylinder 26 is increased, and the original gas volume remains unchanged, the air pressure value inside the telescopic cylinder 26 will decrease as the moving distance of the length and width measuring mechanism 23 toward the belt conveyor 1 increases;

[0052] To detect that low-height cargo passes under the two blocking bars 221, Fig. 9As shown, a control hydraulic cylinder a25 is fixed at one end of one of the baffle bars 221 to operate a laser distance sensor 226, and the laser distance sensor 226 is located at the bottom of the touch switch 223. In order to prevent the top of the goods from scratching the laser distance sensor 226, the present invention embeds the laser distance sensor 226 inside the baffle bar 221. When no goods pass under the baffle bar 221, the height measured by the laser distance sensor 226 is the distance between the baffle bar 221 and the top of the belt conveyor 1 (this distance is now named D0), and the distance D0 value remains unchanged. When the goods with a height lower than the baffle bar 221 move to the bottom of the two baffle bars 221, the height value measured by the laser distance sensor 226 is the distance D1 between the top of the goods and the bottom of the baffle bar 221, and D1 is less than D0. That is to say, when there is goods passing through the bottom of the baffle bar 221, the laser distance sensor 226 measures a height of D1. The distance measured by the optical distance measuring sensor 226 decreases, and the laser distance measuring sensor 226 synchronously uploads the measured result to the main control box 6. At this time, the main control box 6 controls the hydraulic cylinder a25 to start according to the result, and uses the hydraulic cylinder a25 to push the length and width measuring mechanism 23 to move horizontally on the top of the belt conveyor 1 until it contacts the low-height goods. While the length and width measuring mechanism 23 moves, it will synchronously stretch the four telescopic cylinders 26 installed at its four corners. During this process, the barometer b27 synchronously measures the change in the air pressure inside the telescopic cylinder 26 and uploads the change value to the main control box 6. It is known that the air pressure value inside the telescopic cylinder 26 is the largest when the length and width measuring mechanism 23 is not moved. Therefore, if the width of the goods is larger, the distance moved by the length and width measuring mechanism 23 is shorter. In other words, the smaller the change in the air pressure inside the telescopic cylinder 26, the larger the width of the goods, thereby realizing the measurement and sorting of the width of the goods.

[0053] When the two length and width measuring mechanisms 23 stop moving, the air pressure inside the telescopic cylinder 26 no longer changes. The main control box 6 determines whether the goods are large goods with a larger width based on the difference (P3) between the initial air pressure value (P1) and the final air pressure value (P2). If they are large goods, the hydraulic cylinder b52 is controlled to extend and the roller conveyor 51 is rotated to a horizontal position to transport the goods to the large goods conveyor 4. If they are not large goods, the hydraulic cylinder b52 is not started to transport the goods to the small goods conveyor 3 to achieve sorting.

[0054] Moreover, since the two conveyor baffles 21 are moved by the hydraulic cylinders a25, and the two hydraulic cylinders a25 are started by the main control box 6 at the same time, the two hydraulic cylinders a25 extend out to the same distance, that is, the distance they push the conveyor baffles 21 to move is also the same. Therefore, even if the goods are located on one side of the top of the belt conveyor 1, the two hydraulic cylinders a25 can move it back to the middle position. In other words, the present invention does not limit the loading position of the goods, so as to facilitate flexible loading and improve practicality.

[0055] After the above height and width sorting, the goods are sorted according to their length. Figure 3-6 As shown, a barometer a24 for detecting the air pressure change inside the length and width measuring mechanism 23 is provided between the two hydraulic cylinders a25, and the specific structure of the length and width measuring mechanism 23 includes a moving frame 231 embedded in the conveyor baffle 21, the side of the moving frame 231 away from the belt conveyor 1 is fixed to the output end of the hydraulic cylinder a25, a partition 232 is fixed inside the moving frame 231, and the partition 232 and the side of the moving frame 231 away from the belt conveyor 1 form an air pressure monitoring cavity, and the barometer a24 is used to monitor the air pressure change inside the air pressure monitoring cavity;

[0056] Further, such as Figure 5-7 As shown, a plurality of movable balls 233 are embedded on the side of the moving frame 231 facing the belt conveyor 1, a plurality of hollow cylinders 235 are fixed on the partition plate 232, a connecting rod 234 is fixed on one side of the ball 233, one end of the connecting rod 234 passes through the hollow cylinder 235 and extends into the interior of the hollow cylinder 235, a piston plate 236 is fixed on one end of the connecting rod 234 extending into the interior of the hollow cylinder 235, the piston plate 236 divides the interior of the hollow cylinder 235 into a telescopic chamber a and a telescopic chamber b, the telescopic chamber a is connected to the interior of the air pressure monitoring chamber, and the telescopic chamber b is connected to the outside;

[0057] When the hydraulic cylinder a25 pushes the side wall of the length and width measuring mechanism 23 to contact the cargo, the ball 233 installed on one side of the moving frame 231 will first contact the side wall of the cargo. As the moving frame 231 continues to move, the ball 233 can be squeezed into the side wall of the moving frame 231. In the process of moving to the side wall of the moving frame 231, the ball 233 simultaneously drives the connecting rod 234 and the piston plate 236 to move. The piston plate 236 moves inside the hollow cylinder 235, and squeezes the gas originally located inside the hollow cylinder 235 into the air pressure monitoring cavity. For cargo of the same height, the longer the side length, the larger the side area, the more balls 233 can be squeezed by the cargo, and the more gas is squeezed into the air pressure monitoring cavity. Finally, the greater the air pressure value detected by the barometer a24.

[0058] When the goods move between the two moving frames 231, one end of the goods continuously releases the squeezed ball 233, and the other end of the goods continuously squeezes new ball 233, and a spring 237 is fixed between the ball 233 and the hollow cylinder 235, and the ball 233 that is not squeezed can be reset under the push of the spring 237. At this time, the number of balls 233 squeezed by the goods is constant until the other end of the ball 233 moves out from between the two moving frames 231. At this time, the air pressure value (P4) measured by the barometer a24 does not change. The barometer a24 uploads the result to the main control box 6. The main control box 6 determines whether the goods belong to large-volume goods with a long length based on the air pressure value (P4). If it does, the hydraulic cylinder b52 is controlled to extend, and the roller conveyor 51 is rotated to a horizontal position to transport the goods to the large-goods conveyor 4. If it does not, the hydraulic cylinder b52 is not started to transport the goods to the small-goods conveyor 3 to achieve sorting again.

[0059] In addition, it is worth explaining that the judgment basis P3 used by the master control box 6 of the present invention in the width sorting stage and the judgment basis P4 used in the length sorting stage need to be compared with the pre-set judgment standard thresholds a and b: if P3 is less than the judgment standard threshold a, it means that the sorted goods are large goods, and if P4 is greater than the judgment threshold b, it means that the sorted goods are large goods, otherwise it means that the sorted goods are small goods, and then the master control box 6 executes the next control procedure according to the comparison result. The judgment standard threshold is flexibly set according to the specific sorting scenario of the goods, which helps to expand the scope of application of the present invention. Moreover, the control program used by the master control box 6 in the present invention and the setting of the judgment standard thresholds a and b can be realized through the existing technology, and will not be further elaborated here.

[0060] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A logistics sorting device for logistics, comprising a belt conveyor (1) for conveying goods, characterized in that: The belt conveyor (1) is provided with a sorting assembly (2) for sorting goods according to their volume; the output end of the belt conveyor (1) is provided with a large goods conveyor (4) and a small goods conveyor (3); the small goods conveyor (3) is located directly below the output end of the belt conveyor (1); The sorting assembly (2) comprises conveyor baffles (21) installed at the front and rear sides of the belt conveyor (1); a height sorting mechanism (22) is provided between the two conveyor baffles (21); goods whose height is lower than the height sorting mechanism (22) directly pass under the height sorting mechanism (22); and a length and width measuring mechanism (23) embedded in the conveyor baffle (21) is provided on one side of the height sorting mechanism (22) for measuring the length and width of goods whose height is not lower than that of the height sorting mechanism (22); Two hydraulic cylinders a (25) distributed vertically are fixed to the sides of the two length and width measuring mechanisms (23) away from the belt conveyor (1), and the hydraulic cylinders a (25) push the length and width measuring mechanisms (23) to move horizontally on the top of the belt conveyor (1) until they contact the goods whose height is lower than the height sorting mechanism (22). A barometer a (24) for detecting the change of air pressure inside the length and width measuring mechanisms (23) is provided between the two hydraulic cylinders a (25) to measure the length of the goods whose height is lower than the height sorting mechanism (22); The length and width measuring mechanism (23) comprises a movable frame (231) embedded in the conveyor baffle (21); a side of the movable frame (231) away from the belt conveyor (1) is fixed to the output end of the hydraulic cylinder a (25); a partition (232) is fixed inside the movable frame (231); the partition (232) and a side of the movable frame (231) away from the belt conveyor (1) form an air pressure monitoring cavity; the barometer a (24) is used to monitor air pressure changes inside the air pressure monitoring cavity.

2. A logistics sorting device for logistics according to claim 1, characterized in that: Telescopic cylinders (26) are fixed to the four corners of the length and width measuring mechanism (23) on the side away from the belt conveyor (1), and a barometer b (27) is installed at one end of one of the telescopic cylinders (26) for detecting changes in air pressure inside the telescopic cylinder (26) to measure the width of goods whose height is lower than that of the height sorting mechanism (22).

3. A logistics sorting device for logistics according to claim 1, characterized in that: The height sorting mechanism (22) is located directly above the belt conveyor (1). The height sorting mechanism (22) comprises two baffles (221). A rotating shaft (224) is fixed at one end of the baffles (221). The rotating shaft (224) is rotatably connected to a mounting seat on the inner wall of the conveyor baffle (21). Two magnets (222) are embedded in the ends of the two baffles (221) that are close to each other. The magnets (222) installed on the two baffles (221) are magnetically attracted together when in contact. A touch switch (223) and a laser distance sensor (226) for controlling a hydraulic cylinder a (25) are fixed at one end of one of the baffles (221). The laser distance sensor (226) is located at the bottom of the touch switch (223), and the laser distance sensor (226) is embedded in the baffle (221).

4. A logistics sorting device for logistics according to claim 3, characterized in that: The bottom ends of the two rotating shafts (224) are both covered with coil springs (225), one end of the coil spring (225) is fixed to the outer wall of the rotating shaft (224), and the other end of the coil spring (225) is fixed to a mounting seat fixed to the inner wall of the conveyor baffle (21); The coil springs (225) are spirally wound around the outside of the rotating shaft (224), and the spiral directions of the two coil springs (225) are opposite.

5. A logistics sorting device for logistics according to claim 1, characterized in that: A plurality of movable balls (233) are embedded on a side of the movable frame (231) facing the belt conveyor (1); a plurality of hollow cylinders (235) are fixed on the partition plate (232); a connecting rod (234) is fixed on one side of the ball (233); one end of the connecting rod (234) passes through the hollow cylinder (235) and extends into the interior of the hollow cylinder (235); a piston plate (236) is fixed to the end of the connecting rod (234) extending into the interior of the hollow cylinder (235); the piston plate (236) divides the interior of the hollow cylinder (235) into a telescopic chamber a and a telescopic chamber b; the telescopic chamber a is connected to the interior of the air pressure monitoring chamber, and the telescopic chamber b is connected to the outside; goods whose height is lower than the stop rod (221) contact the ball (233) and push the piston plate (236) to move inside the hollow cylinder (235) to increase the air pressure inside the air pressure monitoring chamber.

6. A logistics sorting device for logistics according to claim 5, characterized in that: A spring (237) is fixed between the ball (233) and the hollow cylinder (235) and is used to push the ball (233) to return to its original position.

7. A logistics sorting device for logistics according to claim 2, characterized in that: The telescopic cylinders (26) are installed at four corners of a side of the moving frame (231) away from the belt conveyor (1). A plurality of telescopic cylinders (26) installed on the same moving frame (231) form a group, and the telescopic cylinders (26) installed on two moving frames (231) are divided into two groups. The two groups of telescopic cylinders (26) extend as the two moving frames (231) move toward the middle, and the internal air pressure of the telescopic cylinders (26) decreases after the extension. The two groups of telescopic cylinders (26) are shortened as they follow the two movable frames (231) and move toward the conveyor baffle (21), and the internal air pressure of the shortened telescopic cylinders (26) increases.

8. A logistics sorting device for logistics according to claim 3, characterized in that: The output end of the belt conveyor (1) is provided with a conveyor connection assembly (5) for connecting the small cargo conveyor (3) and the large cargo conveyor (4); The conveyor connection assembly (5) comprises a roller conveyor (51), the roller conveyor (51) being rotatably connected to the output end of the belt conveyor (1), the bottom of the roller conveyor (51) being movably connected to a hydraulic cylinder b (52) for driving the roller conveyor (51) to rotate up and down, the hydraulic cylinder b (52) being controlled by a light touch switch (223), the roller conveyor (51) being in a horizontal position, being connected to a large cargo conveyor (4) for transferring large cargo on the top of the belt conveyor (1) to the large cargo conveyor (4), the hydraulic cylinder b (52) driving the roller conveyor (51) to rotate downward and then being connected to a small cargo conveyor (3) for transferring small cargo on the top of the belt conveyor (1) to the top of the small cargo conveyor (3).

9. A logistics sorting device for logistics according to claim 6, characterized in that: A main control box (6) is installed at the rear side of the input end of the belt conveyor (1). The main control box (6) is used to control the operation of the hydraulic cylinder b (52), the small cargo conveyor (3) and the large cargo conveyor (4). The air pressure detection results of the barometer a (24) and the air pressure detection results of the barometer b (27) are both uploaded to the main control box (6).

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