Express sorting car running drive system

Abstract

The present application relates to a kind of express sorting car running drive systems, including express sorting car, wheel body driving device, sorting platform and track, track includes friction section, when express sorting car runs along track, can make the sorting platform switch in operation interval and stagnation interval, wheel body driving device includes friction wheel, in the operation interval of sorting platform, friction wheel keeps friction contact with friction section to make friction wheel operate;In the stagnation interval of sorting platform, friction wheel keeps from friction section to make friction wheel to hang, its beneficial effect is that sorting platform is driven to run by wheel body driving device, the torque input end of wheel body driving device is friction wheel, when friction wheel rotates, it can drive sorting platform to run;Only in the operation interval of sorting platform, friction wheel keeps contact with friction section, and in the stagnation interval of sorting platform, friction wheel is then separated from friction section and keeps to hang, to avoid unnecessary wear of friction wheel.

Description

Technical Field

[0001] This invention relates to the technical field of express delivery sorting, and in particular to an express delivery sorting vehicle operation drive system.

[0002] This case claims priority information for the invention patent entitled "Express Sorting Vehicle Operation Drive System" with an application date of October 24, 2023 and application number 202311381503.3. Background Technology

[0003] An express sorting vehicle is a type of logistics sorting equipment. The express sorting vehicle includes a frame and a sorting platform as the execution device. The sorting platform is set on the frame and includes at least two rotating rollers and a belt for linking the two rotating rollers. A sorting area is formed on the belt.

[0004] The operation of the express sorting vehicle can be used to drive the rotating roller through the wheel drive device. The torque input end of the wheel drive device is the friction wheel. When the express sorting vehicle runs along the track on the line, the friction wheel is supported by the track to support the express sorting vehicle. The friction wheel can rotate, thereby inputting driving torque to the wheel drive device, so that the wheel drive device can drive the rotating roller.

[0005] Since the sorting platform only needs to operate in specific parts of the line, such as the upper and lower packaging sections, the friction wheel, as the only supporting wheel of the express sorting vehicle, needs to be supported on the track at all times. Therefore, when the sorting platform does not need to operate, the friction wheel experiences unnecessary wear, which reduces its service life and makes it easier for the friction wheel to slip on the track, which is not conducive to improving the operating accuracy of the sorting platform. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drive system for the operation of express sorting vehicles, which solves the technical problems of unnecessary wear of friction wheels in the prior art, which reduces the service life of friction wheels and makes friction wheels more prone to slipping on the track, which is not conducive to improving the operating accuracy of sorting platforms.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] In a first aspect, the present invention provides a drive system for operating a courier sorting vehicle, including a courier sorting vehicle, a wheel drive device, a sorting platform, and a track. The track includes a friction section. When the courier sorting vehicle runs along the track, it enables the sorting platform to switch between an operating range and a stationary range. The wheel drive device includes a friction wheel. In the operating range of the sorting platform, the friction wheel maintains frictional contact with the friction section to make the friction wheel rotate. In the stationary range of the sorting platform, the friction wheel remains detached from the friction section to make the friction wheel suspend in the air.

[0011] In this technical solution, the sorting platform is driven by a wheel drive device. The torque input end of the wheel drive device is a friction wheel. When the friction wheel rotates, it can drive the sorting platform to run.

[0012] When the sorting platform needs to operate, it is in the operating range; when the sorting platform does not need to operate, it is in the stationary range. Only in the operating range of the sorting platform will the friction wheel remain in contact with the friction section. In the stationary range of the sorting platform, the friction wheel will detach from the friction section and remain suspended to avoid unnecessary wear on the friction wheel.

[0013] The friction wheel is an elastic wheel. When the friction wheel and the friction section come into contact with each other, the friction wheel itself will deform, so that the friction wheel has a first contact surface with the friction section. That is, the friction wheel and the friction section are in surface contact, which increases the friction coefficient between the friction wheel and the friction section, avoids the friction wheel from slipping and improves the driving accuracy of the wheel drive device.

[0014] In one technical solution of the present invention, the track further includes a support section, which is close to the friction section. The express sorting vehicle driving system also includes a support wheel, which can support the support section to support the express sorting vehicle.

[0015] In this technical solution, support wheels are used to support the express sorting vehicle to ensure its operational stability, thereby improving the stability and reliability of the express sorting operation. The support wheels can be configured to support the express sorting vehicle only in the operating and stationary sections of the sorting platform, or they can be configured to support the express sorting vehicle in the stationary section and use friction wheels to support it in the operating section.

[0016] In one technical solution of the present invention, the track further includes a base, and the friction section and the support section are detachably connected to the base; the friction section and the support section are both configured as sheet-like structures.

[0017] In this technical solution, the friction section and the support section are sheet-like structures that can be detachably connected to the base. Since the friction section and the support section are the actual support components of the track, targeted design for both, including structure, strength, and surface roughness, can make the track meet the actual usage requirements. The base can be used as a fixed support frame, and the base can be set as a regular steel frame or even a wooden structure to reduce the overall weight of the track and the production cost.

[0018] In one technical solution of the present invention, the support section is a closed loop connected end to end; within the operating range and the stationary range of the sorting platform, the support wheels remain supported on the support section to support the express sorting vehicle; the support section includes a straight section, and the friction section extends along the extension direction of the straight section.

[0019] In this technical solution, the support section is a closed loop. Within the operating and stationary zones of the sorting platform, the support wheel always remains supported on the support section to ensure the operational stability of the express sorting vehicle. Within the operating zone of the sorting platform, the friction wheel also remains in frictional contact with the friction section, but the friction wheel does not provide the main support force for the express sorting vehicle.

[0020] The operating range of the sorting platform corresponds to the straight section of the support segment. Within the operating range of the sorting platform, the sorting platform's working action is to load or unload packages. The straight operating range facilitates the arrangement of the loading and unloading devices, which is conducive to realizing bidirectional loading and unloading, and also helps to improve the efficiency of express sorting.

[0021] In one technical solution of the present invention, multiple friction sections and multiple support sections are connected in an alternating manner to form a ring-shaped track; within the operating range of the sorting platform, the support wheels remain detached from the friction sections and support sections, while the friction wheels are supported on the friction sections to support the express sorting vehicle; within the stationary range of the sorting platform, the support wheels remain supported on the support sections to support the express sorting vehicle.

[0022] In this technical solution, the support section and the friction section are connected in an alternating manner to form a circular track. The support section supports the support wheel in the stationary section of the sorting platform to support the express sorting cart, while the friction wheel supports the express sorting cart in the running section of the sorting platform. This ensures that the friction wheel applies sufficient positive pressure to the friction section, so that the friction wheel does not slip when it is running while supporting the express sorting cart, thereby further improving the driving accuracy of the wheel drive device for the sorting platform.

[0023] After the support wheel detaches from the support section, it will also enter a suspended position detached from the track, so that the support wheel will not be supported by the track indefinitely, thus reducing the frictional wear of the support wheel.

[0024] In one technical solution of the present invention, the friction segment is set as a straight segment and the support segment is set as a curved segment.

[0025] In this technical solution, the operating range of the sorting platform is the straight section, and the stationary range of the sorting platform is the curved section. Within the operating range of the sorting platform, the working action of the sorting platform is to load or unload packages. The straight section facilitates the arrangement of the loading and unloading devices, while the curved section ensures that the track can form a loop.

[0026] In one technical solution of the present invention, the track further includes a parallel section, a first side of the parallel section is connected to the end of the friction section near the parallel section, and a second side of the parallel section is connected to the end of the support section near the parallel section; when the wheel drive device runs to the parallel section, the friction wheel is supported on the first side of the parallel section, and the support wheel is supported on the second side of the parallel section.

[0027] In this technical solution, the parallel section is used to realize the transition when the friction wheel and support wheel are engaged or disengaged from the corresponding friction section and running section. When the working condition of one of the friction wheel and support wheel supporting the express sorting vehicle is switched to the working condition of the other friction wheel and support wheel supporting the express sorting vehicle, a bearing platform is provided to simultaneously support the friction wheel and support wheel, thereby ensuring the operational stability of the express sorting vehicle when the working condition is switched.

[0028] In one embodiment of the present invention, the track further includes a first ramp and a second ramp connected to the parallel section to guide or deflect the friction wheel and the support wheel away from the parallel section.

[0029] In this technical solution, both the first ramp and the second ramp are connected to the parallel section. When the friction wheel and the support wheel move from the suspended position to the parallel section, or from the parallel section to the suspended position of the friction wheel and the support wheel, the first ramp and the second ramp respectively guide the friction wheel and the support wheel, avoiding jerking during operation, thereby ensuring the operational stability of the sorting platform and the express sorting vehicle.

[0030] In one embodiment of the present invention, the track further includes a third ramp connected to the friction section to guide or deflect the friction wheel away from the friction section.

[0031] In this technical solution, the support section always supports the support wheel to support the express sorting vehicle within the operating and stationary zones of the sorting platform. The third ramp is used to guide the friction wheel from the suspended position to the friction section, or to guide the friction wheel from the friction section to the suspended position, to avoid the friction wheel from jerking during operation, thereby ensuring the operational stability of the sorting platform and the express sorting vehicle.

[0032] In one technical solution of the present invention, the hardness and wear resistance of the support wheel are greater than those of the friction wheel, and the friction coefficient of the support wheel is less than that of the friction wheel.

[0033] (III) Beneficial Effects

[0034] The beneficial effects of the present invention are as follows: The express sorting vehicle operation drive system of the present invention drives the sorting platform to run through a wheel drive device. The torque input end of the wheel drive device is a friction wheel. When the friction wheel rotates, it can drive the sorting platform to run.

[0035] When the sorting platform needs to operate, it is in the operating range; when the sorting platform does not need to operate, it is in the stationary range. Only in the operating range of the sorting platform will the friction wheel maintain contact with the friction section. In the stationary range of the sorting platform, the friction wheel will detach from the friction section and remain suspended to avoid unnecessary wear on the friction wheel and extend its service life. Attached Figure Description

[0036] Figure 1 This is one of the top view structural schematic diagrams of the express sorting vehicle operation drive system in one embodiment of the present invention;

[0037] Figure 2 This is a second top view of the track structure in one embodiment of the present invention;

[0038] Figure 3 This is a third top view of the track structure in one embodiment of the present invention;

[0039] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0040] Figure 5 For the present invention Figure 2 A magnified view of the structure at point B in the middle;

[0041] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the local structure at point C;

[0042] Figure 7 This is a schematic diagram of the main structure of the express sorting vehicle operation drive system in one embodiment of the present invention;

[0043] Figure 8 This is a top view of the wheel drive device of the present invention.

[0044] Figure 9 This is a schematic diagram of the track structure in one embodiment of the present invention;

[0045] Figure 10 This is a top view of the drive system for the express sorting vehicle in another embodiment of the present invention;

[0046] Figure 11 For the present invention Figure 10A magnified schematic diagram of the local structure at point D;

[0047] Figure 12 This is a schematic diagram of the track structure in another embodiment of the present invention;

[0048] Figure 13 This is a schematic diagram of the main structure of the express sorting vehicle operation drive system in another embodiment of the present invention;

[0049] Figure 14 This is a schematic diagram of the operating drive system of the express sorting vehicle in another embodiment of the present invention;

[0050] Figure 15 For the present invention Figure 14 A magnified schematic diagram of the local structure at point X;

[0051] Figure 16 For the present invention Figure 14 A magnified schematic diagram of the local structure at point Y;

[0052] Figure 17 This is a schematic diagram of the structure of a sorting platform according to another embodiment of the present invention;

[0053] Figure 18 This is a top view of the track structure in another embodiment of the present invention;

[0054] Figure 19 For the present invention Figure 18 A schematic diagram of the structure at the junction of the friction section and the support section in the embodiment;

[0055] Figure 20 This is a top view of the track structure in another embodiment of the present invention;

[0056] Figure 21 For the present invention Figure 20 A schematic diagram of the structure at the junction of the friction section and the support section in the embodiment.

[0057] [Explanation of Labels in the Attached Image]

[0058] 1: Express sorting vehicle;

[0059] 2: Wheel drive mechanism; 21: Friction wheel;

[0060] 3: Sorting platform;

[0061] 4: Track; 41: Friction section; 42: Support section; 421: Straight section; 43: Parallel section; 44: First ramp; 45: Second ramp; 46: Third ramp; 47: Base;

[0062] 5: Support wheels. Detailed Implementation

[0063] To better explain and facilitate understanding of this invention, the following description is provided in conjunction with the appendix. Figure 1-21 The present invention will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used interchangeably with other directional terms. Figure 14 The orientation is used as a reference.

[0064] Example 1:

[0065] Reference Figures 1-21 The present invention provides a drive system for a courier sorting vehicle, including a courier sorting vehicle 1, a wheel drive device 2, a sorting platform 3, and a track 4. The track 4 includes a friction section 41. When the courier sorting vehicle 1 runs along the track 4, the sorting platform 3 can switch between an operating range and a stationary range. The wheel drive device 2 includes a friction wheel 21. In the operating range of the sorting platform 3, the friction wheel 21 maintains frictional contact with the friction section 41 to make the friction wheel 21 rotate; in the stationary range of the sorting platform 3, the friction wheel 21 remains detached from the friction section 41 to make the friction wheel 21 suspended.

[0066] In this embodiment, the sorting platform 3 is driven by the wheel drive device 2. The torque input end of the wheel drive device 2 is the friction wheel 21. When the friction wheel 21 rotates, it can drive the sorting platform 3 to run.

[0067] When there is a need for operation, the sorting platform 3 is in its operating range; when there is no need for operation, the sorting platform 3 is in its stationary range. Only within the operating range of the sorting platform 3 will the friction wheel 21 remain in contact with the friction section 41. In the stationary range of the sorting platform 3, the friction wheel 21 will detach from the friction section 41 and remain suspended to avoid unnecessary wear on the friction wheel 21.

[0068] Friction wheel 21 is an elastic wheel. When friction wheel 21 comes into contact with friction section 41, friction wheel 21 itself will deform, so that friction wheel 21 has a first contact surface with friction section 41, that is, friction wheel 21 and friction section 41 are in surface contact, thereby increasing the friction coefficient between friction wheel 21 and friction section 41, preventing friction wheel 21 from slipping and improving the driving accuracy of wheel drive device 2.

[0069] Specifically, the sorting platform 3 includes a roller assembly, which includes two rollers and a belt for linking the two rollers. A sorting area is formed above the belt. A sorting platform 3 can be configured to be driven by two wheel drive devices 2. In this configuration, one wheel drive device 2 drives one roller to rotate forward, and the other wheel drive device 2 drives the other roller to rotate in reverse.

[0070] More specifically, in Figure 1-13The wheel drive device 2 shown includes a friction wheel 21 and a clutch, as well as a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft cross each other and transmit torque through a bevel gear. The friction wheel 21 is connected to the first rotating shaft through the clutch, and the second rotating shaft is connected to the sorting platform 3 in a driving connection.

[0071] exist Figures 14-17 The wheel drive device 2 shown includes a friction wheel 21 and a clutch, as well as a first rotating shaft and a second rotating shaft. The second rotating shaft is located at both ends of the first rotating shaft and the two are coaxial. Torque is transmitted between the two through the clutch.

[0072] Regardless of which wheel drive device is used, the friction wheels are configured in two sets, which are respectively connected to both sides of the first rotating shaft. The clutches are also configured in two sets, each clutch including a torque input part and a torque output part. The torque input part is connected to the first rotating shaft or the friction wheel 21, while the output part is connected to the corresponding second rotating shaft. The second rotating shaft is driven by the roller assembly of the sorting platform 3, and the two second rotating shafts drive the roller assembly of the sorting platform 3 in opposite directions.

[0073] The two clutches are not simultaneously in a closed state. The clutches can switch between a closed state that maintains the driving connection between the friction wheel 21 or the first rotating shaft and the second rotating shaft, and a disengaged state that maintains the disconnection between the friction wheel 21 or the first rotating shaft and the second rotating shaft. By controlling the closing of different clutches, the friction wheel 21 can drive the rotating roller to rotate forward or backward, thereby enabling the sorting platform 3 to run forward or backward. This allows the sorting platform 3 to unload packages in both directions, improving the flexibility of the sorting platform 3 and the express sorting vehicle 1. It also enables bidirectional sorting of the sorting platform 3, improving the sorting efficiency of the sorting platform 3.

[0074] Specifically, the clutch can be configured as an electromagnetic clutch or a magnetic powder clutch. Taking the electromagnetic clutch as an example, the electromagnetic clutch can be configured to be powered by a power supply module installed on the express sorting vehicle 1 through a wire, or it can be configured to be powered by a power supply module installed on the base surface of the express sorting vehicle 1 that is running relative to it through a brush.

[0075] In this embodiment, the track 4 also includes a support section 42, which is close to the friction section 41. The express sorting vehicle driving system also includes a support wheel 5, which can be supported on the support section 42 to support the express sorting vehicle 1.

[0076] In this embodiment, the express sorting vehicle 1 is supported by support wheels 5 to ensure the operational stability of the express sorting vehicle 1, thereby improving the stability and reliability of the express sorting operation. The support wheels 5 can be configured to support the express sorting vehicle 1 only in the operating and stationary sections of the sorting platform 3, or they can be configured to support the express sorting vehicle 1 in the stationary section and support it in the operating section by friction wheels 21.

[0077] In this embodiment, the track also includes a base 47, and the friction section 41 and the support section 42 are detachably connected to the base 47; the friction section 41 and the support section 42 are both configured as sheet structures.

[0078] In this embodiment, the friction section 41 and the support section 42 are sheet-like structures that are detachably connected to the base 47. Since the friction section 41 and the support section 42 are the actual support components of the track 4, targeted design for both, including structure, strength and surface roughness, can make the track 4 meet the actual usage requirements and make the base 47 a fixed support frame. In this way, the base 47 can be set as an ordinary steel frame or even a wooden structure to reduce the overall weight of the track 4 and the production cost.

[0079] Specifically, the friction section 41 and the support section 42 can both be configured as steel sheets connected to the base 47 by countersunk bolts, and the friction coefficient of the friction section 41 can be set to be greater than the friction coefficient of the support section 42.

[0080] The support wheel 5 has a higher hardness and wear resistance than the friction wheel 21, and the friction coefficient of the support wheel 5 is lower than that of the friction wheel 21. The friction wheel 21 is a polylactide coated wheel, and the support wheel 5 is a polyurethane coated wheel.

[0081] Polylactone coated wheel material has advantages such as high coefficient of friction and good elasticity. Friction wheel 21 made of this material not only has a sufficient coefficient of friction after contacting friction section 41, but also has a sufficient area for the first contact surface between friction wheel 21 and friction section 41, which can further prevent friction wheel 21 from slipping on friction section 41, thereby improving the operating stability and operating accuracy of wheel drive device 2.

[0082] Polyurethane-coated wheels have advantages such as high hardness, good wear resistance and low operating noise. Using this material for the support wheels 5 helps to reduce the operating noise of the express sorting vehicle 1 and improve the quietness of the express sorting vehicle's drive system during operation.

[0083] Example 2:

[0084] Reference Figures 1-6 , Figure 9 , Figures 14-19In addition to possessing all the technical solutions of Embodiment 1 described above, the embodiments of the present invention further possess the following technical solutions:

[0085] Multiple friction sections 41 and multiple support sections 42 are interlocked to form a ring track 4; within the operating range of the sorting platform 3, the support wheel 5 remains detached from the friction section 41 and the support section 42, while the friction wheel 21 is supported on the friction section 41 to support the express sorting vehicle 1; within the stationary range of the sorting platform 3, the support wheel 5 remains supported on the support section 42 to support the express sorting vehicle 1.

[0086] In this embodiment, the support section 42 and the friction section 41 are connected in an alternating manner to form a ring track 4. The support section 42 supports the support wheel 5 in the stationary section of the sorting platform 3 to support the express sorting vehicle 1. In the running section of the sorting platform 3, the friction wheel 21 supports the express sorting vehicle 1. This ensures that the friction wheel 21 applies sufficient positive pressure to the friction section 41 to ensure that the friction wheel 21 does not slip when it is running while supporting the express sorting vehicle 1, thereby further improving the driving accuracy of the wheel drive device 2 for the sorting platform 3.

[0087] After the support wheel 5 is separated from the support section 42, it will also enter a suspended position that is separated from the track 4, so that the support wheel 5 will not be supported on the track 4 indefinitely, thus reducing the frictional wear of the support wheel 5.

[0088] In this embodiment, the friction segment 41 is set as a straight segment, and the support segment 42 is set as a curved segment.

[0089] In this embodiment, the operating range of the sorting platform 3 is the straight section, and the stationary range of the sorting platform 3 is the curved section. Within the operating range of the sorting platform 3, the working action of the sorting platform 3 is to load or unload packages. The straight section facilitates the arrangement of the loading and unloading devices, while the curved section ensures that the track 4 can form a loop.

[0090] In this embodiment, the track 4 also includes a parallel section 43. The first side of the parallel section 43 is connected to the end of the friction section 41 near the parallel section 43, and the second side of the parallel section 43 is connected to the end of the support section 42 near the parallel section 43. When the wheel drive device 2 runs to the parallel section 43, the friction wheel 21 is supported on the first side of the parallel section 43, and the support wheel 5 is supported on the second side of the parallel section 43.

[0091] In this embodiment, the parallel section 43 is used to realize the transition when the friction wheel 21 and the support wheel 5 are engaged or disengaged from the corresponding friction section 41 and the running section. When the working condition of one of the friction wheel 21 and the support wheel 5 supporting the express sorting vehicle 1 is switched to the other of the friction wheel 21 and the support wheel 5 supporting the express sorting vehicle 1, a bearing platform is provided to simultaneously support the friction wheel 21 and the support wheel 5, thereby ensuring the operational stability of the express sorting vehicle 1 when the working condition is switched.

[0092] Specifically, the parallel segment 43 can be configured as an integral platform, the upper surface of which is used to support the friction wheel 21 and the support wheel 5.

[0093] More specifically, the first side of the parallel segment 204 can be set as the inner side of the parallel segment 204 relative to the loop, and the second side of the parallel segment 204 can be set as the outer side of the parallel segment 204 relative to the loop.

[0094] In this embodiment, the track 4 also includes a first ramp 44 and a second ramp 45 connected to the parallel section 43 to guide or move the friction wheel 21 and the support wheel 5 away from the parallel section 43.

[0095] In this embodiment, the first ramp 44 and the second ramp 45 are both connected to the parallel section 43. When the friction wheel 21 and the support wheel 5 move from the suspended position to the parallel section 43, or from the parallel section 43 to the suspended position of the friction wheel 21 and the support wheel 5, the first ramp 44 and the second ramp 45 respectively guide the friction wheel 21 and the support wheel 5, so as to avoid the friction wheel 21 and the support wheel 5 from jerking during operation, thereby ensuring the operational stability of the sorting platform 3 and the express sorting vehicle 1.

[0096] Specifically, the cross sections of the first slope 44 and the second slope 45 can both be set as right-angled trapezoids and welded to the parallel segment 43.

[0097] More specifically, the first ramp 44 and the second ramp 45 slope upward at the end closer to the parallel section 43 and downward at the end farther from the parallel section 43.

[0098] Meanwhile, the friction section 41 can be set in the inner ring of the support section 42.

[0099] Example 3:

[0100] Reference Figures 10-13 , Figure 20 , Figure 21 In addition to possessing all the technical solutions of Embodiment 1 described above, the embodiments of the present invention further possess the following technical solutions:

[0101] In this embodiment, the support section 42 is a closed loop connected end to end; within the operating range and the stationary range of the sorting platform 3, the support wheel 5 remains supported on the support section 42 to support the express sorting vehicle 1; the support section 42 includes a straight section 421, and the friction section 41 extends along the extension direction of the straight section 421.

[0102] In this embodiment, the support section 42 is a closed loop. Within the operating and stationary zones of the sorting platform 3, the support wheel 5 always remains supported on the support section 42 to ensure the operational stability of the express sorting vehicle 1. Within the operating zone of the sorting platform 3, the friction wheel 21 also remains in frictional contact with the friction section 41, but the friction wheel 21 does not provide the main support force for the express sorting vehicle 1.

[0103] The operating range of the sorting platform 3 corresponds to the straight section 421 of the support section 42. Within the operating range of the sorting platform 3, the working action of the sorting platform 3 is to load or unload packages. The straight operating range facilitates the arrangement of the loading and unloading devices, which is conducive to realizing bidirectional loading and unloading, and also helps to improve the efficiency of express sorting.

[0104] In this embodiment, the track 4 also includes a third ramp 46 connected to the friction section 41 to guide or deflect the friction wheel 21 away from the friction section 41.

[0105] In this embodiment, within the operating and stationary zones of the sorting platform 3, the support section 42 always supports the support wheel 5 to support the express sorting vehicle 1. The third ramp 46 is used to guide the friction wheel 21 from the suspended position to the friction section 41, or to guide the friction wheel 21 from the friction section 41 to the suspended position, to avoid the friction wheel 21 from jerking during operation, thereby ensuring the operational stability of the sorting platform 3 and the express sorting vehicle 1.

[0106] Specifically, the cross-section of the third slope 46 can be set as a right trapezoid and welded to the friction section 41.

[0107] More specifically, the third slope 46 slopes upward at the end closest to the friction section 41 and downward at the end furthest from the friction section 41.

[0108] It can be understood that, except for conflicting parts, the above embodiments 1-3 can be freely combined to form other embodiments of the present invention.

[0109] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0110] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0111] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0112] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0113] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A drive system for a courier sorting vehicle, comprising a courier sorting vehicle (1), a wheel drive device (2), a sorting platform (3), and a track (4), characterized in that: The track (4) includes a friction section (41). When the express sorting vehicle (1) runs along the track (4), the sorting platform (3) can switch between the operating range and the stationary range. The wheel drive device (2) includes a friction wheel (21). Within the operating range of the sorting platform (3), the friction wheel (21) maintains frictional contact with the friction section (41) to make the friction wheel (21) rotate. Within the stagnation zone of the sorting platform (3), the friction wheel (21) remains detached from the friction section (41) so that the friction wheel (21) is suspended in the air; The wheel drive device (2) also includes a clutch and a second shaft; The clutch includes a torque input section and a torque output section. The torque input section is connected to the friction wheel (21), and the torque output section is connected to the corresponding second rotating shaft. The second rotating shaft is driven to maintain a connection with the roller assembly of the sorting platform (3). The clutch can switch between a closed state that maintains the driving connection between the friction wheel (21) and the second shaft, and a disconnected state that maintains the disconnection between the friction wheel (21) and the second shaft.

2. The cart drive system of claim 1, wherein: The track (4) also includes a support section (42), and the express sorting vehicle driving system also includes a support wheel (5), which can be supported on the support section (42) to support the express sorting vehicle (1).

3. The express sorting vehicle operation drive system as described in claim 2, characterized in that: The track also includes a base (47), and the friction section (41) and the support section (42) are detachably connected to the base (47); Both the friction section (41) and the support section (42) are configured as sheet-like structures.

4. The cart drive system of claim 2, wherein: The support segment (42) is a closed loop connected end to end; Within the operating and stationary zones of the sorting platform (3), the support wheels (5) remain supported on the support section (42) to support the express sorting vehicle (1). The support section (42) includes a straight section (421), and the friction section (41) extends along the extension direction of the straight section (421).

5. The cart drive system of claim 2, wherein: The multiple friction segments (41) and the multiple support segments (42) are interleaved to form the ring-shaped track (4). Within the operating range of the sorting platform (3), the support wheel (5) remains detached from the friction section (41) and the support section (42), while the friction wheel (21) is supported on the friction section (41) to support the express sorting vehicle (1). Within the stagnation zone of the sorting platform (3), the support wheel (5) remains supported on the support section (42) to support the express sorting vehicle (1).

6. The cart drive system of claim 5, wherein: The friction section (41) is set as a straight section, and the support section (42) is set as a curved section.

7. The cart drive system of claim 6, wherein: The track (4) further includes a parallel segment (43), a first side of which is connected to the friction segment (41) near one end of the parallel segment (43), and a second side of which is connected to the support segment (42) near one end of the parallel segment (43). When the wheel drive device (2) runs to the parallel section (43), the friction wheel (21) is supported on the first side of the parallel section (43), and the support wheel (5) is supported on the second side of the parallel section (43).

8. The cart drive system of claim 7, wherein: The track (4) also includes a first ramp (44) and a second ramp (45) connected to the parallel section (43) to guide or deflect the friction wheel (21) and the support wheel (5) away from the parallel section (43).

9. The cart drive system of claim 4, wherein: The track (4) also includes a third ramp (46) connected to the friction section (41) to guide or deflect the friction wheel (21) away from the friction section (41).

10. The cart drive system of claim 5, wherein: The hardness and wear resistance of the support wheel (5) are greater than those of the friction wheel (21), and the friction coefficient of the support wheel (5) is less than that of the friction wheel (21).

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