Multi-dimensional transportation sorting system and transportation method

Abstract

The invention discloses a multi-dimensional transportation sorting system. The multi-dimensional transportation sorting system comprises a plurality of sorting trolleys; the sub-sorting systems are sequentially distributed in the vertical direction in an array mode, and the input ends of the sub-sorting systems are located in the same vertical direction; each group of transportation rails comprises a first rail and a second rail, and contact points of the sorting trolley and the first rail and contact points of the sorting trolley and the second rail are a first contact point and a second contact point respectively; at least part of the conveying rail is vertically arranged, the first contact and the second contact are located on the same horizontal plane, and the sorting trolley can be lifted horizontally and stably in the moving process and can convey logistics to the corresponding sorting sub-systems for sorting. The second power source drives the sorting trolley through the combination of the rotating shaft, the chain wheel and the chain, the transmission efficiency is high, and power transmission is stable; the double-chain design provides balanced pulling force for the sorting trolley, stable operation of the sorting trolley is ensured, and the sorting trolley can be kept stable even when the sorting trolley bears heavy goods or runs at a high speed.

Description

Technical Field

[0001] The present application relates to the technical field of express delivery sorting, and in particular to a multi-dimensional transport sorting system and a transport method. Background Art

[0002] With the explosive growth of express delivery business, higher requirements have been placed on express delivery sorting efficiency and accuracy. At present, express delivery sorting centers are rapidly transforming towards mechanization and intelligence. Manual sorting is gradually being replaced by mechanical sorting due to its low efficiency and prone to errors.

[0003] In the existing sorting technology, the mainstream sorting system mostly adopts a single-layer sorting mode. Although this mode has a relatively simple structure, its sorting efficiency is very limited when faced with a large number of express parcels. In order to improve the sorting efficiency, the industry has tried to build a multi-layer sorting system. However, the implementation of a multi-layer sorting system faces many challenges. On the one hand, it is necessary to design a complex transportation system to ensure the efficient and orderly flow of parcels between different floors; on the other hand, it is also necessary to be equipped with a sophisticated control system to achieve precise control of the sorting equipment on each floor. This will undoubtedly greatly increase the investment costs in equipment procurement, installation and commissioning, and later maintenance, limiting the widespread application of multi-layer sorting systems. Summary of the invention

[0004] The purpose of this application is to provide a multi-dimensional transport and sorting system and transport method to achieve multi-layer express transport and sorting.

[0005] In the first aspect, the present application provides a multi-dimensional transport and sorting system, which adopts the following technical scheme: a multi-dimensional transport and sorting system includes a plurality of sorting carts; a plurality of sub-sorting systems, which are arranged in an array in the vertical direction in sequence, and the input ends of the sub-sorting systems are located in the same vertical direction; at least two groups of transport tracks, each group of the transport tracks includes a first track and a second track, and the contact points between the sorting cart and the first track and the second track are respectively a first contact point and a second contact point; the transport tracks are at least partially arranged vertically, and the first contact point and the second contact point are in the same horizontal plane, and the sorting cart can maintain a horizontal and stable lift during the movement, and can transport the logistics to the corresponding sub-sorting system for sorting.

[0006] Preferably, the sorting cart includes a body, at least two first rollers, at least two second rollers, a transfer conveyor belt, a first power source for driving the transfer conveyor belt, and an energy storage component for providing electricity to the first power source, the first roller can move along a first track, the second roller can move along a second track, the rotation centers of the first roller and the second roller are located in the same plane, and the rotation directions of the first roller and the second roller are perpendicular to the moving direction of the transfer conveyor belt.

[0007] Preferably, the back side of the first track is fixedly connected to the back side of the second track, the first track and the second track have the same width, and the moving track of the first track and the moving track of the second track at least partially overlap.

[0008] Preferably, the first track is embedded in the second track, the width of the second track is greater than the width of the second track, and the moving track of the first track and the moving track of the second track at least partially overlap.

[0009] Preferably, it also includes a second power source for driving the sorting trolley to move, the output end of the second power source is fixedly connected to a rotating shaft, the rotating shaft is fixedly connected to a first sprocket and a second sprocket, the first sprocket and the second sprocket are respectively connected to a first chain and a second chain, the first chain and the second chain are respectively arranged along a first track and a second track, the sorting trolley is rotatably connected to a rotating pin, and the rotating pin is fixedly connected to the first chain and the second chain.

[0010] Preferably, it also includes an electric rail, which is parallel to the moving path of the sorting trolley. The sorting trolley is fixedly connected to a mounting frame, and the mounting frame is slidably connected to an electric contact, which is electrically connected to the energy storage component, and the electric contact abuts against the electric rail. A first spring is provided between the electric contact and the mounting frame, and the first spring forces the electric contact to press against the conductive rail.

[0011] Preferably, the mounting frame is slidably connected to a cleaning head, the mounting frame is rotatably connected to a driving rod, the driving rod and the cleaning head are connected by a sliding key, the driving rod and the first roller / second roller are connected by a gear set, and a second spring is provided between the cleaning head and the mounting frame, the second spring forces the cleaning head to abut against the conductive rail.

[0012] In a second aspect, the present application provides a transportation method, which adopts the following technical solution: A transportation method, characterized in that: the specific method is as follows: S1. Place the logistics that need to be transported and sorted on the transfer conveyor belt of the sorting vehicle, start the first power source, and make the transfer conveyor belt run; S2, start the second power source, the output end of the second power source drives the rotating shaft to rotate, and the first sprocket and the second sprocket on the rotating shaft rotate accordingly, and the sorting trolley starts to move along the first track and the second track driven by the chain; S3, move to the corresponding sub-sorting system position, start the first power source, reverse the transfer conveyor belt, transfer the logistics from the sorting trolley to the input end of the sub-sorting system, and the sub-sorting system sorts the logistics; S4. After the logistics unloading is completed, the sorting trolley, driven by the second power source, returns to the initial position along the transport track to prepare for the next logistics transportation task.

[0013] Preferably, when the sorting trolley needs to transport logistics to sub-sorting systems at different heights in step S3, the first roller and the second roller will synchronously enter the vertical parts of the first track and the second track. In this vertical area, the spacing between the first track and the second track is always constant, and this spacing is exactly equal to the spacing between the first roller and the second roller, so that the sorting trolley can always maintain a horizontal state during the movement, thereby achieving smooth vertical lifting.

[0014] Preferably, in the steps S1-S4, the electrical contacts and the electrical rails are kept in intermittent contact.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sub-sorting systems are arranged in an array along the vertical direction, making full use of the space height, increasing the number of sorting systems within a limited area, and improving the sorting capacity. It is especially suitable for places with limited space, such as urban logistics distribution centers; the sorting cart remains horizontal during movement to avoid tilting and rolling of items, reducing the risk of item damage; at the same time, the stable horizontal movement improves the accuracy and stability of the docking between the sorting cart and the sub-sorting system, and improves the sorting efficiency; the first track is embedded in the second track to provide precise guidance for the sorting cart, reduce positioning errors, and improve sorting accuracy; the wide and thick second track combined with the embedded first track design can adapt to sorting carts and goods of different weights and sizes, enhancing the flexibility of the system.

[0016] 2. The second power source drives the sorting trolley through a combination of a rotating shaft, a sprocket and a chain, with high transmission efficiency and stable power transmission; the double chain design provides balanced pulling force for the sorting trolley to ensure its smooth operation, even when carrying heavy goods or running at high speed; when the sorting trolley moves, the cleaning head can clean the electric rail in real time, effectively remove surface impurities, ensure good electrical contact between the electric contact and the electric rail, reduce energy loss and heating problems, and extend the service life of the equipment; the spring auxiliary mechanism can automatically adjust the position of the cleaning head to reduce the frequency and workload of manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This application Figure 1 Front view; Figure 3 It is a schematic diagram of the overall structure of the transport pipeline in Example 1 of the present application; Figure 4 It is a schematic diagram of the overall structure of the sorting trolley in Example 1 of the present application; Figure 5 This application Figure 4 Schematic diagram of the cross section of AA; Figure 6 It is a schematic diagram of the connection between the sorting trolley and the electric guide rail in Example 1 of the present application.

[0018] Explanation of the reference numerals: 1. transport track; 11. first track; 12. second track; 13. lifting section; 14. first contact; 15. second contact; 16. arc section; 2. sorting trolley; 21. first roller; 22. second roller; 23. transfer conveyor belt; 24. mounting frame; 241. guide rod; 242. moving block; 243. electric contact; 244. first spring; 245. cleaning head; 246. second spring; 247. driving rod; 25. rotating rod; 26. lever; 261. slide slot; 27. weight block; 28. second connecting rod; 281. first connecting rod; 29. ​​first power rod; 291. second power rod; 3. sub-sorting system; 4. rotating shaft; 41. first sprocket; 42. second sprocket; 43. first chain; 44. second chain; 5. electric guide rail. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0020] The embodiments of the present application disclose a multi-dimensional transport and sorting system and a transport method.

[0021] Example 1, reference Figure 1 A multi-dimensional transport sorting system includes a plurality of sorting carts, a plurality of sub-sorting systems, and two sets of transport tracks. The plurality of sub-sorting systems are arranged in an array along the vertical direction, and the input ends of the sub-sorting systems are located in the same vertical direction. This layout makes full use of the height of the space and sets up a plurality of sub-sorting systems within a limited area, thereby increasing the sorting capacity of the system. Compared with the horizontally spread sorting system, this vertical array method is more suitable for use in places with limited space, such as logistics distribution centers in cities, and can achieve efficient logistics sorting without occupying too much ground space; a number of sorting carts are connected in series to form a closed-loop transportation route, and two sets of transportation tracks are respectively set on both sides of the sorting carts. The sorting carts move along the transportation tracks. Each set of transportation tracks includes a first track and a second track. The contact points between the sorting cart and the first track and the second track are respectively the first contact point and the second contact point. The first track and the second track are both provided with a lifting section for lifting the sorting cart. The first contact point and the second contact point in the lifting section are in the same horizontal plane, so that the sorting cart can remain horizontal during movement. The horizontal and stable transportation can avoid tilting, rolling, etc. of the items during transportation, and reduce the risk of damage to the items. At the same time, the stable horizontal movement also helps to improve the accuracy and stability of the sorting cart when docking with the sub-sorting system, thereby improving the sorting efficiency.

[0022] refer to Figure 2 and Figure 3 , arc sections are provided at both ends of the lifting sections in the first track and the second track, the spacing between the arc sections of the first track and the second track is equal to the spacing between the lifting sections of the first track and the second track, and the spacing between the first track and the second track in the lifting section is greater than the spacing between the first roller and the second roller, so that when the first roller enters the arc section, the second roller also just enters the arc section. Since the spacing between the first track and the second track in the arc section and the lifting section remains constant, the sorting trolley cannot tilt or rotate in the first track and the second track, and the sorting trolley moves in a horizontal state. In terms of actual application results, this design has brought a qualitative leap in the quality of logistics transportation. Since the sorting trolley remains horizontal throughout the entire process, the goods placed on it will not be displaced, collided or even damaged due to the instability of the trolley, which effectively ensures the integrity of the goods. In the sorting process, stable horizontal movement helps the sorting cart to dock with the sub-sorting system more accurately, greatly improving the efficiency and accuracy of cargo sorting, greatly reducing sorting errors caused by docking deviations, and comprehensively enhancing the working efficiency of the entire logistics transportation sorting system.

[0023] refer to Figure 2 and Figure 3 The first track and the second track are also provided with a portion where the moving tracks overlap each other, and the spacing between the first track and the second track in this portion is smaller than the spacing between the first roller and the second roller, so that the sorting trolley is inclined or parallel to the first track and the second track. In this way, the posture of the sorting trolley is adjusted by changing the track spacing at the overlapping portion of the moving tracks, which helps to achieve more diversified transportation and sorting operations in a limited space, improves the space utilization of the entire system, and enables places such as logistics centers to improve logistics processing capabilities without expanding the floor area.

[0024] refer to Figure 3, the first track is embedded in the second track, and the width of the second track is greater than that of the second track; the structure of the first track embedded in the second track provides precise guidance for the sorting trolley. When the sorting trolley runs on the track, this nested design constitutes a precise guide rail system, which limits the freedom of the trolley in the horizontal and vertical directions and ensures that it moves along the predetermined path. For sorting trolleys that need to be accurately docked at different sub-sorting system positions, this precise guidance can effectively reduce positioning errors and improve sorting accuracy; the wide and thick second track combined with the embedded first track design can better adapt to sorting trolleys of different weights and sizes and the goods they carry. When transporting heavier goods, the track structure can withstand greater pressure without obvious deformation or damage. The adaptability of this design allows the system to flexibly handle a variety of logistics tasks, from light parcels to the transportation and sorting of heavy equipment.

[0025] refer to Figure 4 The sorting trolley includes a body, two first rollers installed at one end of the body, two second rollers installed at the other end of the body, a transfer conveyor belt installed on the top of the body, a first power source for driving the transfer conveyor belt, and an energy storage component for providing power to the first power source. The first roller can move along the first track, and the second roller can move along the second track. The rotation centers of the first roller and the second roller are located in the same plane, and the rotation directions of the first roller and the second roller are perpendicular to the moving direction of the transfer conveyor belt. The structural layout of the first roller and the second roller is adapted to the shape and spacing of the track, ensuring the smooth movement of the trolley on the track. For example, when the track has complex structures such as turns, lifts or intersections, the trolley can adapt well to track changes with its stable roller layout and appropriate wheelbase.

[0026] refer to Figure 1, also includes a second power source for driving the sorting trolley to move, the output end of the second power source is fixedly connected to a rotating shaft, the rotating shaft is fixedly connected to a first sprocket and a second sprocket, the first sprocket and the second sprocket are respectively connected to a first chain and a second chain, the first chain and the second chain are respectively arranged along the first track and the second track, the sorting trolley is rotatably connected to a rotating pin, and the rotating pin is fixedly connected to the first chain and the second chain; the second power source drives the sorting trolley through a combination of a rotating shaft, a sprocket and a chain, and this mechanical transmission method can effectively transmit power to the sorting trolley. Compared with other complex driving methods, chain transmission has a higher transmission efficiency, which can ensure that the power of the power source can be stably transmitted to the sorting trolley, reduce power loss, and ensure the moving speed and operating efficiency of the sorting trolley; the first chain and the second chain are respectively arranged along the first track and the second track, and this double chain design provides a balanced pulling force for the sorting trolley. During operation, the two sides of the sorting trolley are fixedly connected to the chain through rotating pins, so that the trolley can move smoothly along the track, avoiding tilting or shaking caused by excessive force on one side. Even when carrying heavy goods or running at high speed, this stable power transmission and balanced tension structure can ensure the smooth operation of the sorting trolley.

[0027] refer to Figure 4 and Figure 5 , the bottom of the vehicle body is rotatably connected with four rotating rods, the first roller and the second roller are respectively installed on the rotating rods, the rotating rod is fixedly connected with a lever, the lever is located near the center of the vehicle body, and the lever is provided with a slide groove; the bottom end of the vehicle body is rotatably connected with a weight block, the center of mass of the weight block is offset from the rotating point, the axis of the center of rotation of the weight block is located in the middle of the bottom of the vehicle body, the weight block is provided with an arc-shaped through groove, the center of rotation of the weight block is located between the arc-shaped groove and the arc center of the arc-shaped groove, the arc-shaped through groove is slidably connected with a first connecting rod, the first connecting rod passes through the weight block, the two ends of the first connecting rod are fixedly connected with the second connecting rod, the end of the second connecting rod is slidably connected to the slide groove, and the first connecting rod and the second connecting rod are perpendicular to each other. When the sorting trolley is in a horizontal state, the first connecting rod is located at the lowest end of the arc-shaped groove, so that the first roller and the second roller can better abut the first track and the second track outward, increasing the preload force of the roller on the track; when the sorting trolley is tilted, since the gravity of the weight block is always downward, the weight block will rotate, reducing the preload force between the roller and the track.

[0028] refer to Figure 6, and also includes two electric rails, the conductive rails are parallel to the moving path of the sorting trolley, the sorting trolley is fixedly connected to two mounting frames, the two mounting frames are respectively located above the two conductive rails, each mounting frame is fixedly connected to two guide rods, the guide rods are slidably connected to a moving block, the moving block is fixedly connected to an electric contact, a first spring is provided between the moving block and the mounting frame, the first spring forces the moving plate to move toward the electric rail, the electric contact is electrically connected to the energy storage component, the energy storage component in Example 1 takes a battery as an example, each mounting frame is slidably connected to two driving rods, the driving rod sliding key is connected to a cleaning head, the cleaning head passes through the moving block, the two cleaning heads are respectively arranged on both sides of the electric contact, the driving rod is connected to the first roller / the second roller through a gear set, a second spring is provided between the cleaning head and the mounting frame, the second spring forces the cleaning head to abut against the conductive rail. The shapes of both the electric contact and the cleaning head are adapted to the track position of the electric rail. The electric rails can always charge the energy storage components during the movement of the sorting trolley. The energy storage components are in a continuous charging state while providing power to the transfer conveyor belt and other circuits. The electrical contacts of the sorting trolley may be in unstable contact with the electric rails during the movement. The energy storage components can better stabilize the power fluctuations, so that the sorting trolley can obtain stable electricity.

[0029] refer to Figure 1 , Figure 4 and Figure 6 , the bottom end of the vehicle body is rotatably connected with a driving rod, the driving rod is connected to the cleaning head through a sliding key, a second spring is sleeved on the driving rod, the second spring forces the cleaning head to abut against the electric rail, a first power rod is fixedly connected between the two first rollers, the vehicle body is rotatably connected with a second power rod, the axis of the second power rod coincides with the rotation center of the rotating rod, the first power rod and the second power rod are connected through a belt transmission, and the second power rod is connected to the driving rod through a number of gear sets and a bevel gear set, so that during the movement of the sorting trolley, the cleaning head can be driven to clean the electric rail in real time. Since the cleaning head is arranged on both sides of the electric contact and its shape is adapted to the track part of the electric rail, it can effectively remove dust, oil and other impurities on the surface of the electric rail, ensuring good electrical contact between the electric contact and the electric rail. Good electrical contact not only helps to stabilize power transmission, but also reduces energy loss and heat problems caused by excessive contact resistance, and prolongs the service life of the electric rail and the electric contact; the second spring forces the cleaning head to always abut against the electric rail, ensuring that the cleaning head can effectively perform cleaning work at any time. At the same time, when the cleaning head is worn, the second spring can automatically adjust the position of the cleaning head so that it continues to maintain close contact with the electric rail to ensure the cleaning effect. This spring-assisted maintenance mechanism reduces the frequency and workload of manual maintenance and improves the operating efficiency of the system.

[0030] Embodiment 2, a transportation method, comprising the following steps: S1. Place the goods to be transported and sorted steadily on the transfer conveyor belt on top of the sorting trolley. Carefully check the placement of the goods to ensure that they will not be displaced or tipped over during transportation. Then, start the first power source to start the transfer conveyor belt at the set speed, and use the friction of the conveyor belt to initially fix the goods in a suitable position to prepare for subsequent transportation links. At the same time, perform routine inspections on various equipment on the sorting trolley, including the contact between the rollers and the tracks, the power status of the energy storage components, the connection between the electrical contacts and the electrical rails, etc., to ensure that the equipment is in good operating condition.

[0031] S2. After confirming that everything is ready, start the second power source. The output end of the second power source drives the rotating shaft to rotate at a high speed, and the first sprocket and the second sprocket fixedly connected to the rotating shaft also rotate synchronously. Driven by the sprockets, the first chain and the second chain arranged along the first track and the second track respectively start to move, and the sorting trolley is closely connected to the chain through the rotating pin, so that it starts to move smoothly along the first track and the second track under the drive of the chain. During the movement, the special design of the track lifting section is used to ensure that the sorting trolley always remains in a horizontal state to avoid damage to the goods due to the tilt of the trolley. At the same time, the spacing changes of the overlapping parts of the moving tracks in the track are used to adjust the posture of the sorting trolley in time according to actual transportation needs to achieve efficient transportation path planning.

[0032] S3. When the sorting trolley moves to the corresponding sub-sorting system position, the precise positioning system and the guiding function of the track ensure that the sorting trolley accurately stops at the input end of the sub-sorting system. At this time, the first power source is started again and controlled to reverse, so that the transfer conveyor belt runs in the opposite direction. Under the reverse push of the conveyor belt, the goods are smoothly transferred from the sorting trolley to the input end of the sub-sorting system. The sub-sorting system is then started, and the received goods are efficiently and accurately sorted according to the preset sorting rules and procedures, and different categories of goods are allocated to the corresponding channels or areas.

[0033] S4. After the cargo is unloaded, the sorting trolley returns to the initial position along the transport track according to the established return route under the continuous drive of the second power source. During the return journey, the energy storage components on the sorting trolley are charged by the contact between the electrical rails and the electrical contacts, ensuring that the energy storage components always maintain sufficient power and provide stable power support for the next transportation task. At the same time, driven by the gear set, the cleaning head cleans the electrical rails in real time to ensure good electrical contact and extend the service life of the equipment. After returning to the initial position, the sorting trolley is fully inspected and maintained again to replenish necessary materials and energy to fully prepare for the next logistics transportation task and ensure that the entire transportation and sorting process can run continuously and efficiently.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-dimensional transport and sorting system, characterized in that: include A number of sorting carts (2); A plurality of sub-sorting systems (3), wherein the sub-sorting systems (3) are sequentially distributed in an array along a vertical direction, and input ends of the sub-sorting systems (3) are located in the same vertical direction; At least two groups of transport tracks (1), each group of the transport tracks (1) comprising a first track (11) and a second track (12), and contact points between the sorting trolley (2) and the first track (11) and the second track (12) are respectively a first contact point (14) and a second contact point (15); The transport track (1) is at least partially arranged vertically, and the first contact point (14) and the second contact point (15) are located at the same horizontal plane. The sorting trolley (2) can maintain a horizontal and stable lifting during movement, and can transport the logistics to the corresponding sub-sorting system (3) for sorting.

2. The multi-dimensional transport and sorting system according to claim 1, characterized in that: The sorting trolley (2) comprises a body, at least two first rollers (21), at least two second rollers (22), a transfer conveyor belt (23), a first power source for driving the transfer conveyor belt (23) to rotate, and an energy storage component for providing power to the first power source. The first roller (21) can move along a first track (11), and the second roller (22) can move along a second track (12). The rotation centers of the first roller (21) and the second roller (22) are located in the same plane, and the rotation directions of the first roller (21) and the second roller (22) are perpendicular to the movement direction of the transfer conveyor belt (23).

3. The multi-dimensional transport and sorting system according to claim 2, characterized in that: The back side of the first track (11) is fixedly connected to the back side of the second track (12); the first track (11) and the second track (12) have the same width; and the movement track of the first track (11) and the movement track of the second track (12) at least partially overlap.

4. The multi-dimensional transport and sorting system according to claim 2, characterized in that: The first track (11) is embedded in the second track (12), the width of the second track (12) is greater than the width of the second track (12), and the movement track of the first track (11) and the movement track of the second track (12) at least partially overlap.

5. The multi-dimensional transport and sorting system according to claim 3 or 4, characterized in that: The invention also comprises a second power source for driving the sorting trolley (2) to move, wherein the output end of the second power source is fixedly connected to a rotating shaft (4), the rotating shaft (4) is fixedly connected to a first sprocket (41) and a second sprocket (42), the first sprocket (41) and the second sprocket (42) are respectively connected to a first chain (43) and a second chain (44), the first chain (43) and the second chain (44) are respectively arranged along a first track (11) and a second track (12), and the sorting trolley (2) is rotatably connected to a rotating pin, which is fixedly connected to the first chain (43) and the second chain (44).

6. The multi-dimensional transport and sorting system according to claim 5, characterized in that: It also includes an electric rail (5), the electric rail is parallel to the moving path of the sorting trolley (2), the sorting trolley (2) is fixedly connected to a mounting frame (24), the mounting frame (24) is slidably connected to an electric contact (243), the electric contact (243) is electrically connected to the energy storage component, the electric contact (243) abuts against the electric rail (5), a first spring (244) is provided between the electric contact (243) and the mounting frame (24), and the first spring (244) forces the electric contact (243) to abut against the electric rail.

7. The multi-dimensional transport and sorting system according to claim 6, characterized in that: The mounting frame (24) is slidably connected to a cleaning head (245), the mounting frame (24) is rotatably connected to a driving rod (247), the driving rod (247) and the cleaning head (245) are connected by a sliding key, the driving rod (247) and the first roller (21) / the second roller (22) are connected by a gear set, a second spring (246) is provided between the cleaning head (245) and the mounting frame (24), the second spring (246) forces the cleaning head (245) to abut against the conductive rail.

8. A transportation method, characterized in that: Applicable to the multi-dimensional transport and sorting system described in claim 7, the specific method is as follows: S1, placing the logistics to be transported and sorted on the transfer conveyor belt (23) of the sorting vehicle (2), starting the first power source, and operating the transfer conveyor belt (23); S2, starting the second power source, the output end of the second power source drives the rotating shaft (4) to rotate, and the first sprocket (41) and the second sprocket (42) on the rotating shaft (4) rotate accordingly, and the sorting trolley (2) starts to move along the first track (11) and the second track (12) driven by the chain; S3, moving to the corresponding sub-sorting system (3) position, starting the first power source, reversing the transfer conveyor belt (23), transferring the logistics from the sorting trolley (2) to the input end of the sub-sorting system (3), and the sub-sorting system (3) sorting and processing the logistics; S4. After the logistics unloading is completed, the sorting trolley (2) is driven by the second power source to return to the initial position along the transportation track (1) to prepare for the next logistics transportation task.

9. The transportation method according to claim 8, characterized in that: When the sorting trolley (2) needs to transport the logistics to the sub-sorting systems (3) at different heights in step S3, the first roller (21) and the second roller (22) will synchronously enter the vertical portion of the first track (11) and the second track (12). In this vertical region, the spacing between the first track (11) and the second track (12) is always constant, and this spacing is exactly equal to the spacing between the first roller (21) and the second roller (22), so that the sorting trolley (2) can always maintain a horizontal state during the movement, thereby achieving a smooth vertical lift.

10. The transportation method according to claim 9, characterized in that: In the steps S1-S4, the electrical contact (243) and the electrical rail (5) are kept in intermittent contact.

Images