Rotary double-layer linear circulating lifting cross-belt sorting machine

Abstract

The present invention discloses a disc-type double-layer linear circulating lifting cross-belt sorting machine capable of improving the utilization rate of sorting trolleys. The sorting machine includes a support frame, a head box, 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. During use, whether the sorting trolley moves in the upper-level horizontal slide rail, the lower-level horizontal slide rail, or rotates around the disc, it can ensure that the loading platform of the sorting trolley always faces upward, so that the items placed on the loading platform will not fall during the whole process of the movement of the sorting trolley, realizing the conveyance and sorting of items on both the upper slide rail and the lower slide rail. This greatly improves the utilization rate of the sorting trolley, is beneficial 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. At the same time, the floor area of the sorting machine is greatly reduced. It is suitable for popularization and application in the field of logistics technology.

Description

Technical Field

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

[0002] The cross-belt sorting system is connected by a main driving belt conveyor and a trolley (referred to as a sorting trolley) carrying a small belt conveyor. 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. Since the belt conveyor of the main driving belt conveyor and the sorting trolley is in a cross shape, it is called a cross-belt sorting machine.

[0003] Conventional cross-belt sorting machines, such as ring cross-belt sorting machines, usually have a structure that is horizontally laid on the ground. This structure occupies a large area and is difficult to adapt to small-space usage occasions, and the application flexibility is poor.

[0004] In view of this, more and more enterprises are vigorously researching linear cross-belt sorting machines. A disclosed linear cross-belt sorting machine has a small floor area, but there are still certain problems: Since the sorting trolley moves along a circular track, when the sorting trolley is at a high position, the conveying surface of the sorting trolley faces upward and can convey items. When the trolley rotates to the corner and the lower layer position of the circular track, at this time, the conveying surface of the sorting trolley is inclined downward or faces downward, and the items cannot be kept on the conveying surface of the sorting trolley. Therefore, the items must be transferred when they are on the upper layer and cannot be transferred on the lower layer, which greatly reduces the usage efficiency of the trolley and also 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 roulette double-layer linear circulating lifting cross-belt sorting machine that can improve the utilization rate of sorting trolleys.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: The roulette double-layer linear circulating lifting cross-belt sorting machine includes a support frame, a head box and a tail box, and a number 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 a number of sorting trolleys are arranged in sequence along the front-rear direction of the support frame. A first horizontal slide rail, a second horizontal slide rail, a third horizontal slide rail and a fourth horizontal slide rail are fixedly arranged on the support frame. 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 directly above the third horizontal slide rail, the second horizontal slide rail is directly above the fourth horizontal slide rail, and the first horizontal slide rail and the second horizontal slide rail are in the same horizontal plane at the same height, and the third horizontal slide rail and the fourth horizontal slide rail are in the same horizontal plane at the same height. A linear drive motor is arranged on the support frame for driving the sorting trolley to move along the first horizontal slide rail or the third horizontal slide rail.

[0007] The sorting trolley includes a load platform and a base. The load platform is fixed on the upper surface of the base. A first rotating shaft is arranged at the front end of the left side surface of the base. A first roller and a first rotating cylinder are sleeved on the first rotating shaft. The first rotating cylinder is located outside the first roller and there is a gap between the first roller and the first rotating cylinder. A third rotating shaft is arranged at the rear end of the left side surface of the base. A third roller is sleeved on the third rotating shaft. A second rotating shaft is arranged at the rear end of the right side surface of the base. The central axes of the first rotating shaft and the second rotating shaft are parallel to each other, and the central axis of the first rotating shaft is perpendicular to the first horizontal slide rail. A second roller and a second rotating cylinder are sleeved on the second rotating shaft. The second rotating cylinder is located outside the second roller and there is a gap between the second roller and the second rotating cylinder. A fourth rotating shaft is arranged at the front end of the right side surface of the base. A fourth roller is sleeved on the fourth rotating shaft. Adjacent two sorting trolleys are connected by a first connecting plate and a second connecting plate. The two ends of the first connecting plate are respectively sleeved on the first rotating shafts of adjacent two sorting trolleys through bearings. The two ends of the second connecting plate are respectively sleeved on the second rotating shafts of adjacent two sorting trolleys through bearings. When the sorting trolley moves between the first horizontal slide rail and the second horizontal slide rail, the first roller and the third roller of the sorting trolley are both located on the upper surface of the first horizontal slide rail and freely roll along the upper surface of the first horizontal slide rail. The second roller and the fourth roller of the sorting trolley are located on the upper surface of the second horizontal slide rail and freely roll 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 first roller and the third roller of the sorting trolley are located on the upper surface of the third horizontal slide rail and freely roll along the upper surface of the third horizontal slide rail. The second roller and the fourth roller of the sorting trolley are located on the upper surface of the fourth horizontal slide rail and freely roll 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 a support frame. Inside the box body, a first support shaft and a second support shaft are provided. Both the first support shaft and the second support shaft are fixed on the side wall of the head box through bearings. A first disc is fixedly installed on the first support shaft. The first disc and the first roller are in the same vertical plane. A second disc is fixedly installed on the second support shaft. The second disc and the second roller are in the same vertical plane. The central axis of the first disc and the central axis of the second disc are in a horizontal plane at the same height and are parallel to each other. The diameter of the first disc is the same as the diameter of the second disc. The distance between the central axis of the first disc and the central axis of the second disc is equal to the distance between the central axis of the first rotating shaft and the central axis of the second rotating shaft of the sorting carts. A plurality of first clamping devices are provided on the circumferential surface of the first disc. Each first clamping device includes a first support seat. The first support seat is fixed on the circumferential surface of the first disc. A first circular arc groove is provided on the outer side of the first support seat. The inner diameter of the first circular arc groove matches the outer diameter of the first rotating cylinder. The arc distance between the central axes of the first circular arc grooves provided on two adjacent first support seats is equal to the distance between the central axes of the first rotating shafts of two adjacent sorting carts. A plurality of second clamping devices are provided on the circumferential surface of the second disc. Each second clamping device includes a second support seat. The second support seat is fixed on the circumferential surface of the second disc. A second circular arc groove is provided on the outer side of the second support seat. The inner diameter of the second circular arc groove matches the outer diameter of the second rotating cylinder. The arc distance between the central axes of the second circular arc grooves provided on two adjacent second support seats is equal to the distance between the central axes of the second rotating shafts of two adjacent sorting carts. The front end of the first horizontal slide rail extends into the box body and extends above the extension line of the second support shaft. The first horizontal slide rail is located inside the first disc. The front end of the third horizontal slide rail extends into the box body and extends below the extension line of the second support shaft. The third horizontal slide rail is located inside the first disc. The front end of the second horizontal slide rail extends into the box body and extends above the second support shaft. The second horizontal slide rail is located inside the second disc. The front end of the fourth horizontal slide rail extends into the box body and extends below the second support shaft. The fourth horizontal slide rail is located inside the second disc. When the first rotating shaft of any one of the sorting carts moves directly above the first support shaft, the first rotating cylinder is in the first circular arc groove of one of the first support seats, and the second rotating cylinder is in the second circular arc groove of one of the second support seats.

[0009] Furthermore, a first auxiliary annular slide rail is provided inside the casing of the headstock. The first auxiliary annular slide rail is located on the front side of the second turntable, and a first annular groove is provided on the inner surface of the first auxiliary annular slide rail. The extending direction of the first annular groove coincides with the movement track line of the fourth roller when it rotates around the second turntable, and the width of the first annular groove matches the outer diameter of the fourth roller.

[0010] Furthermore, a second auxiliary annular slide rail is provided inside the casing of the tailstock. The second auxiliary annular slide rail is located on the rear side of the first turntable, and a second annular groove is provided on the inner surface of the first auxiliary annular slide rail. The extending direction of the second annular groove coincides with the movement track line of the third roller when it rotates around the first turntable, and the width of the second annular groove matches the outer diameter of the third roller.

[0011] Furthermore, a plurality of first limit rollers are provided 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, and 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. A plurality of second limit rollers are provided 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, and 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.

[0012] Furthermore, a first protective cover, a second protective cover, a third protective cover, and a fourth protective cover are provided on the support frame. The first horizontal slide rail is located inside the first protective cover, the second horizontal slide rail is located inside the second protective cover, the third horizontal slide rail is located inside the third protective cover, and the fourth horizontal slide rail is located inside the fourth protective cover.

[0013] The beneficial effects of the present invention are as follows: When the disc-type double-layer linear circulating lifting cross-belt sorting machine is in use, whether the sorting trolley moves in the upper horizontal slide rail, the lower horizontal slide rail, or rotates around the turntable, it can ensure that the loading platform of the sorting trolley is always 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, it is realized that the items can be transported and sorted both on the upper slide rail and the lower slide rail, greatly improving the utilization rate of the sorting trolley, being beneficial to improving the sorting efficiency, at the same time improving the flexibility of the layout of equipment such as the feeding line and the sorting port, and greatly reducing the floor area of the sorting machine. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the disc-type double-layer linear circulating lifting cross-belt sorting machine of the present invention;

[0015] Figure 2 is a schematic structural view of the slide rail structure described in the present invention;

[0016] Figure 3 is a schematic structural view of the headstock described in the present invention;

[0017] Figure 4 is a rear view of the headstock described in the present invention;

[0018] Figure 5 is a schematic structural view of the sorting trolley described in the present invention;

[0019] Figure 6 is a rear view of the sorting trolley described in the present invention;

[0020] Description of the marks in the figure: support frame 1, sorting trolley 2, loading platform 201, base 202, first rotating shaft 203, first roller 204, first rotating cylinder 205, third rotating shaft 206, third roller 207, second rotating shaft 208, second roller 209, second rotating cylinder 210, fourth rotating shaft 211, fourth roller 212, first connecting plate 213, second connecting plate 214, first limiting roller 215, second limiting roller 216, headstock 3, box body 301, first support shaft 302, second support shaft 303, first disc 304, second disc 306, first support seat 308, first circular arc groove 309, second support seat 310, second circular arc groove 311, first auxiliary annular slide rail 312, first annular groove 313, tailstock 4, second auxiliary annular slide rail 401, second annular groove 402, 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 implementation manners

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] As Figure 1-6As shown in the figure, the roulette double-layer linear circulating lifting cross-belt sorting machine includes a support frame 1, a head box 3 and a tail box 4, and a number of sorting trolleys 2. 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 a number of sorting trolleys 2 are arranged in sequence along the front and rear direction 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 directly above the third horizontal slide rail 7, the second horizontal slide rail 6 is directly above the fourth horizontal slide rail 8, and the first horizontal slide rail 5 and the second horizontal slide rail 6 are in the same horizontal plane at the same height, and the third horizontal slide rail 7 and the fourth horizontal slide rail 8 are in the same horizontal plane at the same height. A linear drive motor is arranged on the support frame 1 for driving the sorting trolley 2 to move along the first horizontal slide rail 5 or the third horizontal slide rail 7;

[0023] The sorting trolley 2 includes a load platform 201 and a base 202. The load platform 201 is fixed on the upper surface of the base 202. At the front end of the left side surface of the base 202, a first rotating shaft 203 is provided. A first roller 204 and a first rotating cylinder 205 are sleeved on the first rotating shaft 203. The first rotating cylinder 205 is located outside the first roller 204 and there is a gap between the first roller 204 and the first rotating cylinder 205. At the rear end of the left side surface of the base 202, a third rotating shaft 206 is provided. A third roller 207 is sleeved on the third rotating shaft 206. At the rear end of the right side surface of the base 202, a second rotating shaft 208 is provided. The central axes of the first rotating shaft 203 and the second rotating shaft 208 are parallel to each other, and the central axis of the first rotating shaft 203 is perpendicular to the first horizontal slide rail 5. A second roller 209 and a second rotating cylinder 210 are sleeved on the second rotating shaft 208. The second rotating cylinder 210 is located outside the second roller 209 and there is a gap between the second roller 209 and the second rotating cylinder 210. At the front end of the right side surface of the base 202, a fourth rotating shaft 211 is provided. A fourth roller 212 is sleeved on the fourth rotating shaft 211. Adjacent sorting trolleys 2 are connected by a first connecting plate 213 and a second connecting plate 214. The two ends of the first connecting plate 213 are respectively sleeved on the first rotating shafts 203 of adjacent sorting trolleys 2 through bearings. The two ends of the second connecting plate 214 are respectively sleeved on the second rotating shafts 208 of adjacent sorting trolleys 2 through bearings. When the sorting trolley 2 moves between the first horizontal slide rail 5 and the second horizontal slide rail 6, the first roller 204 and the third roller 207 of the sorting trolley 2 are both located on the upper surface of the first horizontal slide rail 5 and freely roll along the upper surface of the first horizontal slide rail 5. The second roller 209 and the fourth roller 212 of the sorting trolley 2 are located on the upper surface of the second horizontal slide rail 6 and freely roll 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 first roller 204 and the third roller 207 of the sorting trolley 2 are located on the upper surface of the third horizontal slide rail 7 and freely roll along the upper surface of the third horizontal slide rail 7. The second roller 209 and the fourth roller 212 of the sorting trolley 2 are located inside the upper surface of the fourth horizontal slide rail 8 and freely roll along the upper surface of the fourth horizontal slide rail 8;

[0024] 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. Inside the box body 301, a first support shaft 302 and a second support shaft 303 are provided. The first support shaft 302 and the second support shaft 303 are both fixed on the side wall of the head box 3 through bearings. A first wheel disc 304 is fixedly installed on the first support shaft 302. The first wheel disc 304 and the first roller 204 are located in the same vertical plane. A second wheel disc 306 is fixedly installed on the second support shaft 303. The second wheel disc 306 and the second roller 209 are located in the same vertical plane. The central axis of the first wheel disc 304 and the central axis of the second wheel disc 306 are in a horizontal plane at the same height and are parallel to each other. The diameter of the first wheel disc 304 is the same as the diameter of the second wheel disc 306. The distance between the central axis of the first wheel disc 304 and the central axis of the second wheel disc 306 is equal to the distance between the central axis of the first rotating shaft 203 and the central axis of the second rotating shaft 208. A plurality of first clamping devices are provided on the circumferential surface of the first wheel disc 304. Each first clamping device includes a first support seat 308. The first support seat 308 is fixed on the circumferential surface of the first wheel disc 304. A first circular arc groove 309 is provided on the outside of the first support seat 308. The inner diameter of the first circular arc groove 309 matches the outer diameter of the first rotating cylinder 205. The arc distance between the central axes of the first circular arc grooves 309 provided on two adjacent first support seats 308 is equal to the distance between the central axes of the first rotating shafts 203 of two adjacent sorting trolleys 2. A plurality of second clamping devices are provided on the circumferential surface of the second wheel disc 306. Each second clamping device includes a second support seat 310. The second support seat 310 is fixed on the circumferential surface of the second wheel disc 306. A second circular arc groove 311 is provided on the outside of the second support seat 310. The inner diameter of the second circular arc groove 311 matches the outer diameter of the second rotating cylinder 210. The arc distance between the central axes of the second circular arc grooves 311 provided on two adjacent second support seats 310 is equal to the distance between the central axes of the second rotating shafts 208 of two adjacent sorting trolleys 2. The front end of the first horizontal slide rail 5 extends into the box body 301 and extends above the extension line of the second support shaft 303. The first horizontal slide rail is located inside the first wheel disc 304. The front end of the third horizontal slide rail 7 extends into the box body 301 and extends below the extension line of the second support shaft 303. The third horizontal slide rail is located inside the first wheel disc 304.The front end of the second horizontal slide rail 6 extends into the box body 301 and extends above the second support shaft 303. The second horizontal slide rail is located inside the second turntable 306. The front end of the fourth horizontal slide rail 8 extends into the box body 301 and extends below the second support shaft 303. The fourth horizontal slide rail is located inside the second turntable 306. When the first rotating shaft 203 of any one of the sorting trolleys 2 moves directly above the first support shaft 302, the first rotating cylinder 205 is located in the first circular arc groove 309 of one of the first support seats 308, and the second rotating cylinder 210 is located in the second circular arc groove 311 of one of the second support seats 310.;

[0025] The working principle of this roulette double-layer linear circulating 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 axes of the first roulette 304 and the second roulette 306 are in the same horizontal plane at the same height and are parallel to each other, and the diameters of the first roulette 304 and the second roulette 306 are the same, and the distance between the central axis of the first roulette 304 and the central axis of the second roulette 306 is equal to the distance between the central axis of the first rotating shaft 203 and the central axis of the second rotating shaft 208; at the same time, since the front end of the first horizontal slide rail 5 extends into the box body 301 and extends above the extension line of the second support shaft 303, the first horizontal slide rail is located inside the first roulette 304, and the front end of the third horizontal slide rail 7 extends into the box body 301 and extends below the extension line of the second support shaft 303, and the third horizontal slide rail is located inside the first roulette 304; when the first rotating shaft 203 of any one of the sorting trolleys 2 moves upward towards the directly above of the first support shaft 302, the first roller 204 and the fourth roller 212 are simultaneously disengaged from the first horizontal slide rail 5 and the second horizontal slide rail 6. At the same time, two adjacent sorting trolleys 2 are connected by a first connecting plate 213 and a second connecting plate 214. At this time, in addition to being supported by the coaxial third roller 207 and the second roller 209, the first connecting plate 213 will also provide a third support point for the first rotating shaft 203. Three non-collinear support points can ensure that the sorting trolley 2 will not flip during the movement, so as to keep the sorting trolley 2 always in a horizontal state. When the first rotating shaft 203 of the sorting trolley 2 moves to the directly above of the first support shaft 302, at this time, the first rotating cylinder 205 is in the first circular arc groove 309 of one of the first support seats 308, and the second rotating cylinder 210 is in the second circular arc groove 311 of one of the second support seats 310. The second roller 209 is disengaged from the second horizontal slide rail 6, and the third roller 207 is disengaged from the first horizontal slide rail 5. When the sorting trolley 2 continues to rotate around the roulette, since the sorting trolley 2 is fixed in the first circular arc groove 309 and the second circular arc groove 311 through the first rotating cylinder 205 and the second rotating cylinder 210, and the first rotating cylinder 205 and the second rotating cylinder 210 are not coaxial, therefore, when the sorting trolley 2 rotates around the roulette, the sorting trolley 2 can always be in a horizontal state. When the first rotating shaft 203 of the sorting trolley 2 moves to the directly below of the first support shaft 302 and continues to move, the first rotating cylinder 205 is disengaged from the first circular arc groove 309. At the same time, the third roller 207 enters the groove of the third horizontal slide rail 7. At the same time, the second rotating cylinder 210 is disengaged from the second circular arc groove 311. At the same time, the second roller 209 moves to the upper surface of the fourth horizontal slide rail 8. At this time, in addition to being supported by the coaxial third roller 207 and the second roller 209, the first connecting plate 213 will also provide a third support point for the first rotating shaft 203,Three non - collinear support points can ensure that the sorting trolley 2 will not tip over during the movement, so as to keep the sorting trolley 2 always in a horizontal state. When the sorting trolley 2 continues to move, the first roller 204 and the fourth roller 212 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. Adjacent sorting trolleys 2 are connected by a first connecting plate 213 and a second connecting plate 214. When the front sorting trolley 2 moves, it will drive the rear sorting trolley 2 to move. Repeating this process, during use, whether the sorting trolley 2 moves in the upper - layer horizontal slide rail, the lower - layer horizontal slide rail, or rotates around the turntable, it can ensure that the loading platform 201 of the sorting trolley 2 always faces upward. Thus, the items placed on the loading platform 201 will not fall during the whole process of the movement of the sorting trolley 2. Therefore, it realizes that the conveying and sorting of items can be carried out on both the upper - layer slide rail and the lower - layer slide rail, greatly improving the utilization rate of the sorting trolley 2, being beneficial to improving the sorting efficiency, at the same time improving the flexibility of the layout of equipment such as the loading line and the sorting port, and greatly reducing the floor area of the sorter.

[0026] To ensure the stability of the sorting trolley 2 when rotating around the turntable, a first auxiliary annular slide rail 312 is arranged inside the box body 301 of the head box 3. The first auxiliary annular slide rail 312 is located in front of the second turntable 306, and a first annular groove 313 is arranged on the inner surface of the first auxiliary annular slide rail 312. The extending direction of the first annular groove 313 coincides with the movement track line of the fourth roller 212 when rotating around the second turntable 306, and the width of the first annular groove 313 matches the outer diameter of the fourth roller 212. In this way, when the sorting trolley 2 rotates around the turntable, three support points can be in the same plane, enabling the sorting trolley 2 to run more smoothly during the rotation process. Similarly, a second auxiliary annular slide rail 401 is arranged inside the box body 301 of the tail box 4. The second auxiliary annular slide rail 401 is located behind the first turntable 304, and a second annular groove 402 is arranged on the inner surface of the first auxiliary annular slide rail 312. The extending direction of the second annular groove 402 coincides with the movement track line of the third roller 207 when rotating around the first turntable 304, and the width of the second annular groove 402 matches the outer diameter of the third roller 207.

[0027] To ensure the stability of the sorting trolley 2 when moving along the horizontal slide rail, a plurality of first limiting rollers 215 are provided 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, and 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 rollers 215. A plurality of second limiting rollers 216 are provided 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, and 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 rollers 216. In this way, through the limiting rollers and the first roller 204 and the second roller 209, the sorting trolley 2 can be restricted 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, making its operation more stable.

[0028] To prevent sundries 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 inside the first protective cover 9, the second horizontal slide rail 6 is located inside the second protective cover 10, the third horizontal slide rail 7 is located inside the third protective cover 11, and the fourth horizontal slide rail 8 is located inside the fourth protective cover 12.

Claims

1. Rotary double-layer linear circulating lifting cross-belt sorting machine, characterized in that: It includes a support frame (1), a head box (3), a tail box (4), and a number of sorting trolleys (2). 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 number of sorting trolleys (2) are arranged in sequence along the front-rear direction 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 directly above the third horizontal slide rail (7), the second horizontal slide rail (6) is directly above the fourth horizontal slide rail (8), and the first horizontal slide rail (5) and the second horizontal slide rail (6) are in the same horizontal plane at the same height. The third horizontal slide rail (7) and the fourth horizontal slide rail (8) are in the same horizontal plane at the same height. 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) is arranged on the support frame (1). The sorting trolley (2) includes a load platform (201) and a base (202). The load platform (201) is fixed on the upper surface of the base (202). At the front end of the left side surface of the base (202), a first rotating shaft (203) is provided. A first roller (204) and a first rotating cylinder (205) are sleeved on the first rotating shaft (203). The first rotating cylinder (205) is located outside the first roller (204), and there is a gap between the first roller (204) and the first rotating cylinder (205). At the rear end of the left side surface of the base (202), a third rotating shaft (206) is provided. A third roller (207) is sleeved on the third rotating shaft (206). At the rear end of the right side surface of the base (202), a second rotating shaft (208) is provided. The central axes of the first rotating shaft (203) and the second rotating shaft (208) are parallel to each other, and the central axis of the first rotating shaft (203) is perpendicular to the first horizontal slide rail (5). A second roller (209) and a second rotating cylinder (210) are sleeved on the second rotating shaft (208). The second rotating cylinder (210) is located outside the second roller (209), and there is a gap between the second roller (209) and the second rotating cylinder (210). At the front end of the right side surface of the base (202), a fourth rotating shaft (211) is provided. A fourth roller (212) is sleeved on the fourth rotating shaft (211). Adjacent sorting trolleys (2) are connected by a first connecting plate (213) and a second connecting plate (214). The two ends of the first connecting plate (213) are respectively sleeved on the first rotating shafts (203) of adjacent sorting trolleys (2) through bearings. The two ends of the second connecting plate (214) are respectively sleeved on the second rotating shafts (208) of adjacent sorting trolleys (2) through bearings. When the sorting trolley (2) moves between the first horizontal slide rail (5) and the second horizontal slide rail (6), the first roller (204) and the third roller (207) of the sorting trolley (2) are both located on the upper surface of the first horizontal slide rail (5) and freely roll along the upper surface of the first horizontal slide rail (5). The second roller (209) and the fourth roller (212) of the sorting trolley (2) are located on the upper surface of the second horizontal slide rail (6) and freely roll 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 first roller (204) and the third roller (207) of the sorting trolley (2) are located on the upper surface of the third horizontal slide rail (7) and freely roll along the upper surface of the third horizontal slide rail (7). The second roller (209) and the fourth roller (212) of the sorting trolley (2) are located inside the upper surface of the fourth horizontal slide rail (8) and freely roll 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 shaft (302) and a second support shaft (303) are arranged in the box body (301). The first support shaft (302) and the second support shaft (303) are both fixed on the side wall of the head box (3) through bearings. A first disc (304) is fixedly installed on the first support shaft (302). The first disc (304) and the first roller (204) are located in the same vertical plane. A second disc (306) is fixedly installed on the second support shaft (303). The second disc (306) and the second roller (209) are located in the same vertical plane. The central axis of the first disc (304) and the central axis of the second disc (306) are in a horizontal plane at the same height and are parallel to each other. The diameter of the first disc (304) is the same as the diameter of the second disc (306). The distance between the central axis of the first disc (304) and the central axis of the second disc (306) is equal to the distance between the central axis of the first rotating shaft (203) and the central axis of the second rotating shaft (208); A plurality of first clamping devices are arranged on the circumferential surface of the first disc (304). Each first clamping device includes a first support seat (308). The first support seat (308) is fixed on the circumferential surface of the first disc (304). A first circular arc groove (309) is arranged on the outside of the first support seat (308). The inner diameter of the first circular arc groove (309) matches the outer diameter of the first rotating cylinder (205). The arc distance between the central axes of the first circular arc grooves (309) arranged on two adjacent first support seats (308) is equal to the distance between the central axes of the first rotating shafts (203) of two adjacent sorting trolleys (2); A plurality of second clamping devices are arranged on the circumferential surface of the second disc (306). Each second clamping device includes a second support seat (310). The second support seat (310) is fixed on the circumferential surface of the second disc (306). A second circular arc groove (311) is arranged on the outside of the second support seat (310). The inner diameter of the second circular arc groove (311) matches the outer diameter of the second rotating cylinder (210). The arc distance between the central axes of the second circular arc grooves (311) arranged on two adjacent second support seats (310) is equal to the distance between the central axes of the second rotating shafts (208) of two adjacent sorting trolleys (2); The front end of the first horizontal slide rail (5) extends into the box body (301) and extends above the extension line of the second support shaft (303). The first horizontal slide rail (5) is located inside the first disc (304). The front end of the third horizontal slide rail (7) extends into the box body (301) and extends below the extension line of the second support shaft (303). The third horizontal slide rail (7) is located inside the first disc (304);The front end of the second horizontal slide rail (6) extends into the box body (301) and reaches above the second support shaft (303). The second horizontal slide rail (6) is located inside the second turntable (306). The front end of the fourth horizontal slide rail (8) extends into the box body (301) and reaches below the second support shaft (303). The fourth horizontal slide rail (8) is located inside the second turntable (306). When the first rotating shaft (203) of any one of the sorting trolleys (2) moves directly above the first support shaft (302), the first rotating cylinder (205) is located in the first circular arc groove (309) of one of the first support seats (308), and the second rotating cylinder (210) is located in the second circular arc groove (311) of one of the second support seats (310). A first auxiliary annular slide rail (312) is arranged inside the box body (301) of the head box (3). The first auxiliary annular slide rail (312) is located on the front side of the second turntable (306). A first annular groove (313) is arranged on the inner surface of the first auxiliary annular slide rail (312). The extending direction of the first annular groove (313) coincides with the movement track line of the fourth roller (212) when it rotates around the second turntable (306). The width of the first annular groove (313) matches the outer diameter of the fourth roller (212). A second auxiliary annular slide rail (401) is arranged inside the box body (301) of the tail box (4). The second auxiliary annular slide rail (401) is located on the rear side of the first turntable (304). A second annular groove (402) is arranged on the inner surface of the first auxiliary annular slide rail (312). The extending direction of the second annular groove (402) coincides with the movement track line of the third roller (207) when it rotates around the first turntable (304). The width of the second annular groove (402) matches the outer diameter of the third roller (207).; 2. The roulette double-layer linear circulating lifting cross-belt sorting machine according to claim 1, wherein: On the left side of the lower surface of the base (202), a plurality of first limiting rollers (215) are provided. 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 all 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). On the right side of the lower surface of the base (202), a plurality of second limiting rollers (216) are provided. 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 all 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).

3. The roulette double-layer linear circulating lifting cross-belt sorting machine according to claim 1, wherein: 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 within the first protective cover (9). The second horizontal slide rail (6) is located within the second protective cover (10). The third horizontal slide rail (7) is located within the third protective cover (11). The fourth horizontal slide rail (8) is located within the fourth protective cover (12).

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