Coaxial double-layer linear circulation lifting cross belt sorting machine

Abstract

The present invention discloses a coaxial double-layer linear circulation lifting cross-belt sorting machine that can improve the utilization rate of a sorting trolley. The sorting machine includes a support frame, a head box and a tail box, and a plurality of sorting trolleys. The support frame is fixedly provided with a first horizontal slide rail, a second horizontal slide rail, a third horizontal slide rail, and a fourth horizontal slide rail. When in use, the sorting trolley can ensure that the loading platform of the sorting trolley is always facing upward, whether it moves in the upper horizontal slide rail, moves in the lower horizontal slide rail, or rotates, so that the items placed on the loading platform will not fall during the whole process of the movement of the sorting trolley, and the sorting can be carried out on the upper slide rail and the lower slide rail, which greatly improves the utilization rate of the sorting trolley, is conducive to improving the sorting efficiency, and at the same time improves the flexibility of the layout of equipment such as the feeding line and the sorting port, and at the same time greatly reduces the floor space occupied by the sorting machine. It is suitable for promotion and application in the field of logistics technology.

Description

Technical Field

[0001] The invention relates to the technical field of logistics, in particular to a coaxial double-layer linear circulation lifting cross-belt sorting machine. Background Art

[0002] The cross-belt sorting system is connected by the main driving belt conveyor and the trolley carrying the small belt conveyor (referred to as the sorting trolley). When the sorting trolley moves to the specified sorting position, the small belt conveyor of the sorting trolley is rotated to sort and send out the items placed on the sorting trolley. Because the main driving belt conveyor and the belt conveyor of the sorting trolley are in a cross shape, it is called a cross-belt sorter.

[0003] Conventional cross-belt sorters, such as circular cross-belt sorters, are usually horizontally laid on the ground. This structure occupies a large area, is difficult to adapt to small space applications, and has poor application flexibility.

[0004] In view of this, more and more companies have vigorously studied linear cross-belt sorting machines, and a linear cross-belt sorting machine has been revealed. This structure occupies a small area, but there are still certain problems: since the sorting trolley moves along the circular track, when the sorting trolley is in a high position, the conveying surface of the sorting trolley faces upward to transport items. When the trolley rotates to the corner of the circular track and the lower position, the conveying surface of the sorting trolley is tilted or downward, and the items cannot be kept on the conveying surface of the sorting trolley. Therefore, the items must be transferred on the upper layer and cannot be transferred on the lower layer, which greatly reduces the use efficiency of the trolley and reduces the flexibility of equipment layout. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a coaxial double-layer linear circulation lifting cross-belt sorting machine which can improve the utilization rate of a sorting trolley.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the coaxial double-layer linear cycle lifting cross-belt sorting machine comprises a support frame, a head box and a tail box, and a plurality of sorting trolleys, the head box is arranged at the front end of the support frame, the tail box is arranged at the rear end of the support frame, and the plurality of sorting trolleys are arranged in sequence along the front and rear directions of the support frame, the support frame is fixedly provided with a first horizontal slide rail, a second horizontal slide rail, a third horizontal slide rail, and a fourth horizontal slide rail, the first horizontal slide rail, the second horizontal slide rail, the third horizontal slide rail, and the fourth horizontal slide rail are parallel to each other, the first horizontal slide rail is located directly above the third horizontal slide rail, the second horizontal slide rail is located directly above the fourth horizontal slide rail, and the first horizontal slide rail and the second horizontal slide rail are located in a horizontal plane at the same height, and the third horizontal slide rail and the fourth horizontal slide rail are located in a horizontal plane at the same height, and the support frame is provided with a linear drive motor for driving the sorting trolley to move along the first horizontal slide rail or the third horizontal slide rail;

[0007] The sorting trolley comprises a loading platform and a base, the loading platform is fixed on the upper surface of the base, a first rotating shaft is fixedly arranged at the center of the left side surface of the base, a first roller and a first synchronous belt pulley are sleeved on the first rotating shaft, the first synchronous belt pulley is located on the outside of the first roller and there is a gap between the first roller and the first synchronous belt pulley, the first synchronous belt pulley is fixed on the first rotating shaft, a third rotating shaft is arranged at the front end and the rear end of the left side surface of the base, the distances between the first rotating shaft and the two third rotating shafts are the same, a third roller with the same structure is sleeved on the third rotating shaft, and the distance between the inner end surface of the first roller and the left side surface of the base is The cam is provided with a third wheel, the third wheel having a first end and a second end, and the cam is provided with a fourth wheel, the second wheel having a first end and a second end. A fourth roller with the same structure is sleeved on the four rotating shafts, and the distance between the inner end face of the second roller and the right side surface of the base is greater than the distance between the outer end face of the fourth roller and the right side surface of the base; two adjacent sorting carts are connected by a first connecting plate, a second connecting plate, a first synchronous belt, and a second synchronous belt, and the two ends of the first connecting plate are respectively sleeved on the first rotating shafts of the two adjacent sorting carts through bearing sleeves, and the two ends of the second connecting plate are respectively sleeved on the second rotating shafts of the two adjacent sorting carts through bearing sleeves, and the first synchronous belt sequentially bypasses the first synchronous belt wheels of the two adjacent sorting carts, and the second synchronous belt sequentially bypasses the two adjacent sorting carts. The second synchronous pulley of the trolley, when the sorting trolley moves between the first horizontal slide rail and the second horizontal slide rail, the third rollers of the sorting trolley are all located on the upper surface of the first horizontal slide rail and roll freely along the upper surface of the first horizontal slide rail, the fourth rollers of the sorting trolley are all located on the upper surface of the second horizontal slide rail and roll freely along the upper surface of the second horizontal slide rail, when the sorting trolley moves between the third horizontal slide rail and the fourth horizontal slide rail, the third rollers of the sorting trolley are all located on the upper surface of the third horizontal slide rail and roll freely along the upper surface of the third horizontal slide rail, the fourth rollers of the sorting trolley are all located in the upper surface of the fourth horizontal slide rail and roll freely along the upper surface of the fourth horizontal slide rail;

[0008] The head box and the tail box have the same structure. The head box includes a box body fixed on the support frame, and a first support plate and a second support plate are arranged in the box body, the first support plate is vertically arranged and is in the same vertical plane with the first roller of the sorting trolley, the second support plate is vertically arranged and is in the same vertical plane with the second roller of the sorting trolley, the first support plate is arranged in the same vertical plane with the second roller of the sorting trolley, the first support plate is arranged in the first arc-shaped groove, the first arc-shaped groove passes through the first support plate, the second arc-shaped groove is arranged on the second support plate, the second arc-shaped groove passes through the second support plate, the central axis of the first arc-shaped groove coincides with the central axis of the second arc-shaped groove, the front end of the first horizontal slide rail extends into the box body, and the vertical distance between the front end surface of the first horizontal slide rail and the central axis of the first arc-shaped groove is equal to the distance between the central axis of the first roller and the central axis of the third roller, the first horizontal slide rail is located on the inner side of the first support plate, and the front end of the third horizontal slide rail extends into the box body The first wheel is annularly arranged in a circle, and the second wheel is arranged on the inner side of the second support plate, and the first wheel is arranged on the inner side of the second support plate ...

[0009] Furthermore, a first auxiliary arc-shaped slide rail and a second auxiliary arc-shaped slide rail are arranged in the box body, the first auxiliary arc-shaped slide rail is located on the inner side of the first support plate, and the second auxiliary arc-shaped slide rail is located on the inner side of the second support plate. The inner surface extension direction of the first auxiliary arc-shaped slide rail coincides with the motion trajectory of the third roller located at the front end of the sorting trolley when the sorting trolley rotates around the central axis of the first circular arc groove.

[0010] Furthermore, a plurality of first limit rollers are arranged on the left side of the lower surface of the base, the central axes of the plurality of first limit rollers are parallel to each other, the central axes of the plurality of first limit rollers are perpendicular to the lower surface of the base, the distances between the central axes of the plurality of first limit rollers and the first horizontal slide rail are equal and equal to the radius of the first limit roller, and a plurality of second limit rollers are arranged on the right side of the lower surface of the base, the central axes of the plurality of second limit rollers are parallel to each other, the central axes of the plurality of second limit rollers are perpendicular to the lower surface of the base, the distances between the central axes of the plurality of second limit rollers and the second horizontal slide rail are equal and equal to the radius of the second limit roller.

[0011] Furthermore, the support frame is provided with a first protective cover, a second protective cover, a third protective cover, and a fourth protective cover, the first horizontal slide rail is located in the first protective cover, the second horizontal slide rail is located in the second protective cover, the third horizontal slide rail is located in the third protective cover, and the fourth horizontal slide rail is located in the fourth protective cover.

[0012] The beneficial effect of the present invention is that when the coaxial double-layer linear circulation lifting cross-belt sorting machine is in use, whether the sorting trolley moves in the upper horizontal slide rail, moves in the lower horizontal slide rail, or rotates around the central axis of the second arc-shaped groove, it can ensure that the loading platform of the sorting trolley is always facing upward, so that the items placed on the loading platform will not fall during the whole process of the movement of the sorting trolley. Therefore, the sorting can be realized on both the upper slide rail and the lower slide rail to transport and sort the items, which greatly improves the utilization rate of the sorting trolley, is conducive to improving the sorting efficiency, and at the same time improves the flexibility of the layout of equipment such as the feeding line and the sorting port, and at the same time greatly reduces the floor space occupied by the sorting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the coaxial double-layer linear circulation lifting cross-belt sorting machine of the present invention;

[0014] Figure 2 is a schematic diagram of the slide rail structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the head box structure of the present invention;

[0016] Figure 4 is a schematic structural diagram of the head box of the present invention from another viewing angle;

[0017] Figure 5 It is a structural schematic diagram of the sorting trolley of the present invention;

[0018] Figure 6 is a rear view of the sorting trolley of the present invention;

[0019] Markings in the figure: support frame 1, sorting trolley 2, loading platform 201, base 202, first rotating shaft 203, first roller 204, first synchronous pulley 205, third roller 206, second rotating shaft 207, second roller 208, second synchronous pulley 209, fourth roller 210, first connecting plate 211, second connecting plate 212, first synchronous belt 213, second synchronous belt 214, first limiting roller 215, second limiting roller 216, head box 3, box body 301, first supporting plate 302, second supporting plate 303, first arc-shaped groove 304, second arc-shaped groove 305, first auxiliary arc slide rail 306, second auxiliary arc slide rail 307, tail box 4, first horizontal slide rail 5, second horizontal slide rail 6, third horizontal slide rail 7, fourth horizontal slide rail 8, first protective cover 9, second protective cover 10, third protective cover 11, fourth protective cover 12. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-6 As shown, the coaxial double-layer linear cycle lifting cross-belt sorting machine includes a support frame 1, a head box 3 and a tail box 4, and a plurality of sorting carts 2. The head box 3 is arranged at the front end of the support frame 1, and the tail box 4 is arranged at the rear end of the support frame 1. A plurality of sorting carts 2 are arranged in sequence along the front and rear directions of the support frame 1. A first horizontal slide rail 5, a second horizontal slide rail 6, a third horizontal slide rail 7, and a fourth horizontal slide rail 8 are fixedly arranged on the support frame 1. The first horizontal slide rail 5, the second horizontal slide rail 6, the third horizontal slide rail 7, and the fourth horizontal slide rail 8 are parallel to each other. The first horizontal slide rail 5 is located directly above the third horizontal slide rail 7, and the second horizontal slide rail 6 is located directly above the fourth horizontal slide rail 8. The first horizontal slide rail 5 and the second horizontal slide rail 6 are located in a horizontal plane at the same height, and the third horizontal slide rail 7 and the fourth horizontal slide rail 8 are located in a horizontal plane at the same height. A linear drive motor for driving the sorting cart 2 to move along the first horizontal slide rail 5 or the third horizontal slide rail 7 is arranged on the support frame 1;

[0022] The sorting trolley 2 includes a loading platform 201 and a base 202, wherein the loading platform 201 is fixed on the upper surface of the base 202, a first rotating shaft 203 is fixedly arranged at the center of the left surface of the base 202, a first rotating shaft 204 and a first synchronous pulley 205 are sleeved on the first rotating shaft 203, the first synchronous pulley 205 is located on the outside of the first roller 204 and there is a gap between the first roller 204 and the first synchronous pulley 205, the first synchronous pulley 205 is fixed on the first rotating shaft 203, a third rotating shaft is arranged at the front and rear ends of the left surface of the base 202, the distances between the first rotating shaft 203 and the two third rotating shafts are the same, a third roller 206 with the same structure is sleeved on the third rotating shaft, the distance between the inner end face of the first roller 204 and the left surface of the base 202 is greater than the distance between the outer end face of the third roller 206 and the left surface of the base 202; the base 20 2, a second rotating shaft 207 is fixedly arranged at the center of the right side surface of the base 202, the central axes of the first rotating shaft 203 and the second rotating shaft 207 coincide, the central axis of the first rotating shaft 203 and the first horizontal slide rail 5 are perpendicular to each other, the second rotating shaft 207 is sleeved with a second roller 208 and a second synchronous belt pulley 209, the second synchronous belt pulley 209 is located on the outside of the second roller 208 and there is a gap between the second roller 208 and the second synchronous belt pulley 209, the second synchronous belt pulley 209 is fixed on the second rotating shaft 207, the front and rear ends of the right side surface of the base 202 are both provided with a fourth rotating shaft, the distances between the second rotating shaft 207 and the two fourth rotating shafts are the same, the fourth rotating shaft is sleeved with a fourth roller 210 of the same structure, the distance between the inner end face of the second roller 208 and the right side surface of the base 202 is greater than the distance between the outer end face of the fourth roller 210 and the right side surface of the base 202;Two adjacent sorting carts 2 are connected via a first connecting plate 211, a second connecting plate 212, a first synchronous belt 213, and a second synchronous belt 214. Both ends of the first connecting plate 211 are respectively mounted on the first rotating shaft 203 of the two adjacent sorting carts 2 via bearing sleeves, and both ends of the second connecting plate 212 are respectively mounted on the second rotating shaft 207 of the two adjacent sorting carts 2 via bearing sleeves. The first synchronous belt 213 sequentially bypasses the first synchronous belt pulleys 205 of the two adjacent sorting carts 2, and the second synchronous belt 214 sequentially bypasses the second synchronous belt pulleys 209 of the two adjacent sorting carts 2. When the sorting cart 2 moves to the first horizontal slide rail, 5 and the second horizontal slide rail 6, the third rollers 206 of the sorting trolley 2 are all located on the upper surface of the first horizontal slide rail 5 and roll freely along the upper surface of the first horizontal slide rail 5, the fourth rollers 210 of the sorting trolley 2 are all located on the upper surface of the second horizontal slide rail 6 and roll freely along the upper surface of the second horizontal slide rail 6, when the sorting trolley 2 moves between the third horizontal slide rail 7 and the fourth horizontal slide rail 8, the third rollers 206 of the sorting trolley 2 are all located on the upper surface of the third horizontal slide rail 7 and roll freely along the upper surface of the third horizontal slide rail 7, the fourth rollers 210 of the sorting trolley 2 are all located in the upper surface of the fourth horizontal slide rail 8 and roll freely along the upper surface of the fourth horizontal slide rail 8;

[0023] The head box 3 and the tail box 4 have the same structure. The head box 3 includes a box body 301 fixed on the support frame 1. A first support plate 302 and a second support plate 303 are arranged in the box body 301. The first support plate 302 is arranged vertically and is in the same vertical plane as the first roller 204 of the sorting trolley 2. The second support plate 303 is arranged vertically and is in the same vertical plane as the second roller 208 of the sorting trolley 2. A first arc-shaped groove 304 is arranged on the first support plate 302. The first arc-shaped groove 304 runs through the first support plate 302. The second support A second arc-shaped groove 305 is provided on the plate 303, and the second arc-shaped groove 305 penetrates the second support plate 303. The central axis of the first arc-shaped groove 304 coincides with the central axis of the second arc-shaped groove 305. The front end of the first horizontal slide rail 5 extends into the box body 301, and the vertical distance between the front end surface of the first horizontal slide rail 5 and the central axis of the first arc-shaped groove 304 is equal to the distance between the central axis of the first roller 204 and the central axis of the third roller 206. The first horizontal slide rail 5 is located on the inner side of the first support plate 302, and the front end of the third horizontal slide rail 7 extends into the box body 301. The third horizontal slide rail 7 is inserted into the box body 301, and the vertical distance between the front end surface of the third horizontal slide rail 7 and the central axis of the first arc-shaped groove 304 is equal to the distance between the central axis of the first roller 204 and the central axis of the third roller 206. The third horizontal slide rail 7 is located on the inner side of the first support plate 302; the front end of the second horizontal slide rail 6 extends into the box body 301, and the vertical distance between the front end surface of the second horizontal slide rail 6 and the central axis of the second arc-shaped groove 305 is equal to the distance between the central axis of the second roller 208 and the central axis of the fourth roller 210. The second horizontal slide rail 6 is located on the second support plate 302. 03, the front end of the fourth horizontal slide rail 8 extends into the box body 301 and the vertical distance between the front end surface of the fourth horizontal slide rail 8 and the central axis of the second arc-shaped groove 305 is equal to the distance between the central axis of the second roller 208 and the central axis of the fourth roller 210. The fourth horizontal slide rail 8 is located on the inner side of the second support plate 303. When the first rotating shaft 203 of any one of the sorting carts 2 moves to directly above the central axis of the first arc-shaped groove 304, the first roller 204 is in the first arc-shaped groove 304, and the second roller 208 is in the second arc-shaped groove 305.

[0024] The working principle of the coaxial double-layer linear circulation lifting cross-belt sorting machine is as follows: first, the sorting trolley 2 is driven to move by a linear drive motor. Since the central axis of the first arc-shaped groove 304 coincides with the central axis of the second arc-shaped groove 305, the front end of the first horizontal slide rail 5 extends into the box body 301 and the vertical distance between the front end surface of the first horizontal slide rail 5 and the central axis of the first arc-shaped groove 304 is equal to the distance between the central axis of the first roller 204 and the central axis of the third roller 206. The first horizontal slide rail 5 is located on the inner side of the first support plate 302. The front end of the third horizontal slide rail 7 extends into the box body 301 and the vertical distance between the front end surface of the third horizontal slide rail 7 and the central axis of the first arc-shaped groove 304 is equal to the distance between the central axis of the first roller 204 and the central axis of the third roller 206. The vertical distance is equal to the distance between the center axis of the first roller 204 and the center axis of the third roller 206, and the third horizontal slide rail 7 is located on the inner side of the first support plate 302; the front end of the second horizontal slide rail 6 extends into the box body 301 and the vertical distance between the front end surface of the second horizontal slide rail 6 and the center axis of the second arc-shaped groove 305 is equal to the distance between the center axis of the second roller 208 and the center axis of the fourth roller 210, the second horizontal slide rail 6 is located on the inner side of the second support plate 303, the front end of the fourth horizontal slide rail 8 extends into the box body 301 and the vertical distance between the front end surface of the fourth horizontal slide rail 8 and the center axis of the second arc-shaped groove 305 is equal to the distance between the center axis of the second roller 208 and the center axis of the fourth roller 210 The fourth horizontal slide rail 8 is located on the inner side of the second supporting plate 303; when the first rotating shaft 203 of any one of the sorting carts 2 moves toward the center axis of the first arc-shaped groove 304, the third roller 206 and the fourth roller 210 at the front end of the sorting cart 2 are first disengaged from the first horizontal slide rail 5 and the second horizontal slide rail 6 at the same time. Since the two adjacent sorting carts 2 are connected by the first connecting plate 211, the second connecting plate 212, the first synchronous belt 213, and the second synchronous belt 214, the first synchronous belt 213 and the second synchronous belt 214 are driven in such a way that as long as one of the sorting carts 2 rotates, the other sorting carts 2 will also rotate synchronously, that is, as long as one of the sorting carts 2 is in a horizontal state In this state, other sorting carts 2 will also be in a horizontal state. Since the sorting carts 2 on the horizontal slide rails are all in a horizontal state, even if the sorting cart 2 is only supported by the third roller 206 and the fourth roller 210 at the rear end of the sorting cart 2, due to the effects of the first synchronous belt 213 and the second synchronous belt 214 and the first connecting plate 211 and the second connecting plate 212, all the sorting carts 2 will be in a horizontal state, which can ensure that the sorting cart 2 will not flip over during the movement, thereby keeping the sorting cart 2 in a horizontal state. When the first rotating shaft 203 of the sorting cart 2 moves to just above the central axis of the first arc-shaped groove 304, at this time, the first roller 204 is in the first arc-shaped groove 304,The second roller 208 is in the second arc-shaped groove 305, and the third roller 206 and the fourth roller 210 at the rear end of the sorting trolley 2 are also separated from the first horizontal slide rail 5 and the second horizontal slide rail 6. When the sorting trolley 2 continues to rotate around the central axis of the first arc-shaped groove 304, due to the action of the first synchronous belt 213 and the second synchronous belt 214 and the action of the first connecting plate 211 and the second connecting plate 212, all the sorting trolleys 2 will be in a horizontal state, thereby keeping the sorting trolley 2 in a horizontal state. When the first rotating shaft 203 moves to the position directly below the central axis of the first arc-shaped groove 304, at this time, the first roller 204 disengages from the first arc-shaped groove 304, the second roller 208 disengages from the second arc-shaped groove 305, and the third roller 206 and the fourth roller 210 located at the rear end of the sorting trolley 2 simultaneously move to the upper surface of the third horizontal slide rail 7 and the upper surface of the fourth horizontal slide rail 8. At this time, due to the action of the first synchronous belt 213 and the second synchronous belt 214 and the action of the first connecting plate 211 and the second connecting plate 212, all the sorting trolleys 2 will also be in The sorting trolley 2 is in a horizontal state, thereby keeping the sorting trolley 2 in a horizontal state all the time. When the sorting trolley 2 continues to move, the third roller 206 and the fourth roller 210 at the front end of the sorting trolley 2 will simultaneously move to the upper surface of the third horizontal slide rail 7 and the upper surface of the fourth horizontal slide rail 8. The two adjacent sorting trolleys 2 are connected by the first connecting plate 211, the second connecting plate 212, the first synchronous belt 213, and the second synchronous belt 214. The sorting trolley 2 in front will drive the sorting trolley 2 behind to move when it moves, and this cycle is repeated. When in use, the sorting trolley 2 is Whether the sorting trolley 2 moves in the upper horizontal rail, moves in the lower horizontal rail, or rotates around the central axis of the second arc-shaped groove 305, it can ensure that the loading platform 201 of the sorting trolley 2 is always facing upward, so that the items placed on the loading platform 201 will not fall during the whole process of the movement of the sorting trolley 2. Therefore, the sorting can be realized on both the upper and lower rails. The transportation and sorting of items can be carried out, which greatly improves the utilization rate of the sorting trolley 2, is conducive to improving the sorting efficiency, and at the same time improves the flexibility of the layout of equipment such as the feeding line and the sorting port, and at the same time greatly reduces the floor space occupied by the sorting machine.

[0025] In order to ensure the stability of the sorting trolley 2 when rotating around the central axis of the first arc-shaped groove 304, a first auxiliary arc-shaped slide rail 306 and a second auxiliary arc-shaped slide rail 307 are arranged in the box body 301. The first auxiliary arc-shaped slide rail 306 is located on the inner side of the first support plate 302, and the second auxiliary arc-shaped slide rail 307 is located on the inner side of the second support plate 303. The inner surface extension direction of the first auxiliary arc-shaped slide rail 306 coincides with the motion trajectory of the third roller 206 located at the front end of the sorting trolley 2 when the sorting trolley 2 rotates around the central axis of the first arc-shaped groove 304. In this way, when the sorting trolley 2 rotates around the central axis of the first arc-shaped groove 304, four supporting points can be in the same plane, which can make the sorting trolley 2 run more smoothly during the rotation process.

[0026] In order to ensure the stability of the sorting trolley 2 when moving along the horizontal slide rail, a plurality of first limiting rollers 215 are arranged on the left side of the lower surface of the base 202, the central axes of the plurality of first limiting rollers 215 are parallel to each other, the central axes of the plurality of first limiting rollers 215 are perpendicular to the lower surface of the base 202, the distances between the central axes of the plurality of first limiting rollers 215 and the first horizontal slide rail 5 are equal and equal to the radius of the first limiting roller 215, and a plurality of second limiting rollers 216 are arranged on the right side of the lower surface of the base 202, the central axes of the plurality of second limiting rollers 216 are parallel to each other, the central axes of the plurality of second limiting rollers 216 are perpendicular to the lower surface of the base 202, the distances between the central axes of the plurality of second limiting rollers 216 and the second horizontal slide rail 6 are equal and equal to the radius of the second limiting roller 216. In this way, the sorting trolley 2 can be limited between the first horizontal slide rail 5 and the second horizontal slide rail 6 or between the third horizontal slide rail 7 and the fourth horizontal slide rail 8 by the limiting roller and the first roller 204 and the second roller 208, so that it runs more smoothly.

[0027] In order to prevent debris from falling onto the surface of the slide rail and affecting the operation of the sorting trolley 2, a first protective cover 9, a second protective cover 10, a third protective cover 11, and a fourth protective cover 12 are provided on the support frame 1. The first horizontal slide rail 5 is located in the first protective cover 9, the second horizontal slide rail 6 is located in the second protective cover 10, the third horizontal slide rail 7 is located in the third protective cover 11, and the fourth horizontal slide rail 8 is located in the fourth protective cover 12.

Claims

1. Coaxial double-layer linear circulation lifting cross belt sorting machine, characterized by: The invention comprises a support frame (1), a head box (3), a tail box (4), and a plurality of sorting carts (2), wherein the head box (3) is arranged at the front end of the support frame (1), the tail box (4) is arranged at the rear end of the support frame (1), and the plurality of sorting carts (2) are arranged in sequence along the front and rear directions of the support frame (1), and the support frame (1) is fixedly provided with a first horizontal slide rail (5), a second horizontal slide rail (6), a third horizontal slide rail (7), and a fourth horizontal slide rail (8), wherein the first horizontal slide rail (5), the second horizontal slide rail (6), and the third horizontal slide rail ( 7) and the fourth horizontal slide rail (8) are parallel to each other, the first horizontal slide rail (5) is located directly above the third horizontal slide rail (7), the second horizontal slide rail (6) is located directly above the fourth horizontal slide rail (8), and the first horizontal slide rail (5) and the second horizontal slide rail (6) are located in a horizontal plane at the same height, and the third horizontal slide rail (7) and the fourth horizontal slide rail (8) are located in a horizontal plane at the same height, and the support frame (1) is provided with a linear drive motor for driving the sorting trolley (2) to move along the first horizontal slide rail (5) or the third horizontal slide rail (7); The sorting trolley (2) comprises a loading platform (201) and a base (202); the loading platform (201) is fixed on the upper surface of the base (202); a first rotating shaft (203) is fixedly arranged at the center of the left surface of the base (202); a first roller (204) and a first synchronous belt pulley (205) are sleeved on the first rotating shaft (203); the first synchronous belt pulley (205) is located outside the first roller (204) and there is a gap between the first roller (204) and the first synchronous belt pulley (205); The first synchronous pulley (205) is fixed on the first rotating shaft (203); the front end and the rear end of the left side surface of the base (202) are both provided with third rotating shafts; the distances between the first rotating shaft (203) and the two third rotating shafts are the same; the third rotating shafts are sleeved with third rollers (206) of the same structure; the distance between the inner end surface of the first roller (204) and the left side surface of the base (202) is greater than the distance between the outer end surface of the third roller (206) and the left side surface of the base (202); the base ( A second rotating shaft (207) is fixedly arranged at the center of the right side surface of the first rotating shaft (202), the central axis of the first rotating shaft (203) and the central axis of the second rotating shaft (207) coincide, the central axis of the first rotating shaft (203) and the first horizontal slide rail (5) are perpendicular to each other, and the second rotating shaft (207) is sleeved with a second roller (208) and a second synchronous pulley (209), and the second synchronous pulley (209) is located on the outside of the second roller (208) and between the second roller (208) and the second synchronous pulley (209). There is a gap, the second synchronous pulley (209) is fixed on the second rotating shaft (207), the front end and the rear end of the right side surface of the base (202) are both provided with fourth rotating shafts, the distances between the second rotating shaft (207) and the two fourth rotating shafts are the same, a fourth roller (210) with the same structure is sleeved on the fourth rotating shaft, and the distance between the inner end surface of the second roller (208) and the right side surface of the base (202) is greater than the distance between the outer end surface of the fourth roller (210) and the right side surface of the base (202);Two adjacent sorting carts (2) are connected via a first connecting plate (211), a second connecting plate (212), a first synchronous belt (213), and a second synchronous belt (214); both ends of the first connecting plate (211) are respectively mounted on the first rotating shafts (203) of the two adjacent sorting carts (2) via bearing sleeves; both ends of the second connecting plate (212) are respectively mounted on the second rotating shafts (207) of the two adjacent sorting carts (2) via bearing sleeves; the first synchronous belt (213) sequentially passes around the first synchronous belt pulleys (205) of the two adjacent sorting carts (2); the second synchronous belt (214) sequentially passes around the second synchronous belt pulleys (209) of the two adjacent sorting carts (2); when the sorting cart (2) moves to the first horizontal slide rail (5), When the sorting trolley (2) is between the third horizontal slide rail (7) and the second horizontal slide rail (6), the third roller (206) of the sorting trolley (2) is located on the upper surface of the first horizontal slide rail (5) and rolls freely along the upper surface of the first horizontal slide rail (5); the fourth roller (210) of the sorting trolley (2) is located on the upper surface of the second horizontal slide rail (6) and rolls freely along the upper surface of the second horizontal slide rail (6); when the sorting trolley (2) moves between the third horizontal slide rail (7) and the fourth horizontal slide rail (8), the third roller (206) of the sorting trolley (2) is located on the upper surface of the third horizontal slide rail (7) and rolls freely along the upper surface of the third horizontal slide rail (7); the fourth roller (210) of the sorting trolley (2) is located on the upper surface of the fourth horizontal slide rail (8) and rolls freely along the upper surface of the fourth horizontal slide rail (8); The head box (3) and the tail box (4) have the same structure. The head box (3) includes a box body (301) fixed on the support frame (1). A first support plate (302) and a second support plate (303) are arranged in the box body (301). The first support plate (302) is arranged vertically and is in the same vertical plane as the first roller (204) of the sorting trolley (2). The second support plate (303) is arranged vertically and is in the same vertical plane as the second roller (208) of the sorting trolley (2). The first support plate (302) is provided with a first arc-shaped groove (304). The first arc-shaped groove (304) passes through the first support plate (302). A second arc-shaped groove (305) is provided on the second support plate (303), the second arc-shaped groove (305) passes through the second support plate (303), the central axis of the first arc-shaped groove (304) coincides with the central axis of the second arc-shaped groove (305), the front end of the first horizontal slide rail (5) extends into the box body (301), and the vertical distance between the front end surface of the first horizontal slide rail (5) and the central axis of the first arc-shaped groove (304) is equal to the distance between the central axis of the first roller (204) and the central axis of the third roller (206), the first horizontal slide rail (5) is located on the inner side of the first support plate (302), and the third horizontal slide rail (7) is located on the inner side of the first support plate (302). The front end of the third horizontal slide rail (7) extends into the box body (301) and the vertical distance between the front end surface of the third horizontal slide rail (7) and the central axis of the first arc-shaped groove (304) is equal to the distance between the central axis of the first roller (204) and the central axis of the third roller (206), and the third horizontal slide rail (7) is located on the inner side of the first support plate (302); the front end of the second horizontal slide rail (6) extends into the box body (301) and the vertical distance between the front end surface of the second horizontal slide rail (6) and the central axis of the second arc-shaped groove (305) is equal to the distance between the central axis of the second roller (208) and the central axis of the fourth roller (210), and the second horizontal slide rail (6) is located on the inner side of the second support plate ( The fourth horizontal slide rail (8) is located on the inner side of the second support plate (303), the front end of the fourth horizontal slide rail (8) extends into the box body (301), and the vertical distance between the front end surface of the fourth horizontal slide rail (8) and the central axis of the second arc-shaped groove (305) is equal to the distance between the central axis of the second roller (208) and the central axis of the fourth roller (210), the fourth horizontal slide rail (8) is located on the inner side of the second support plate (303), when the first rotating shaft (203) of any one of the sorting carts (2) moves to the top of the central axis of the first arc-shaped groove (304), the first roller (204) is located in the first arc-shaped groove (304), and the second roller (208) is located in the second arc-shaped groove (305);A first auxiliary arc-shaped slide rail (306) and a second auxiliary arc-shaped slide rail (307) are arranged in the box body (301); the first auxiliary arc-shaped slide rail (306) is located on the inner side of the first support plate (302); the second auxiliary arc-shaped slide rail (307) is located on the inner side of the second support plate (303); the inner surface extension direction of the first auxiliary arc-shaped slide rail (306) is aligned with the third roller (206) located at the front end of the sorting trolley (2) around the first arc-shaped groove ( 304) when the central axis rotates; the support frame (1) is provided with a first protective cover (9), a second protective cover (10), a third protective cover (11), and a fourth protective cover (12); the first horizontal slide rail (5) is located in the first protective cover (9), the second horizontal slide rail (6) is located in the second protective cover (10), the third horizontal slide rail (7) is located in the third protective cover (11), and the fourth horizontal slide rail (8) is located in the fourth protective cover (12). ; 2. The coaxial double-layer linear circulation lifting cross belt sorting machine according to claim 1, characterized in that: A plurality of first limiting rollers (215) are arranged on the left side of the lower surface of the base (202), the central axes of the plurality of first limiting rollers (215) are parallel to each other, the central axes of the plurality of first limiting rollers (215) are perpendicular to the lower surface of the base (202), the distances between the central axes of the plurality of first limiting rollers (215) and the first horizontal slide rail (5) are equal and equal to the radius of the first limiting roller (215), and a plurality of second limiting rollers (216) are arranged on the right side of the lower surface of the base (202), the central axes of the plurality of second limiting rollers (216) are parallel to each other, the central axes of the plurality of second limiting rollers (216) are perpendicular to the lower surface of the base (202), the distances between the central axes of the plurality of second limiting rollers (216) and the second horizontal slide rail (6) are equal and equal to the radius of the second limiting roller (216).

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