Rail type farm transportation system

Abstract

The invention provides a rail type farm transportation system, and relates to the technical field of agricultural equipment, the rail type farm transportation system comprises a main rail assembly and a traction device, the main rail assembly comprises a first main rail and a second main rail, and the two rails are used for being connected with a power source. The traction device adopts a cross-rail type design and comprises a traction frame, an electricity taking assembly, an electric energy storage device and a driving assembly. The power taking assembly is provided with two independent power taking wheels which are in rolling contact with the two main rails so as to obtain electric energy. The driving assembly comprises a power source, a driving wheel and a supporting wheel, the driving wheel is in transmission connection with the bottom face of the second main rail, and the supporting wheel is matched with the top face of the rail. The obtained electric energy is stored in the electric energy storage device and supplies power to the power source, and finally the whole traction device is driven by the driving wheels to run along the track. Through the double-track power supply structure and the optimized traction device layout, the operation stability and the power supply reliability of the system are remarkably improved, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural equipment, and in particular to a rail-type farm transportation system. Background Art

[0002] On farms and orchards, material transportation (such as fruit picking, fertilizer delivery, and tool handling) typically relies on traditional transport vehicles, such as agricultural tricycles, tractors, or carts. However, these modes of transportation have significant drawbacks: First, they require the construction and maintenance of dedicated roads, which is costly or even impossible in areas with undulating terrain or dense plantings. Second, traditional vehicles are prone to slipping and rolling over on slopes or in muddy conditions, making them inefficient and posing safety risks.

[0003] To address these issues, some farms have begun to adopt rail transport systems, which involves building tracks in the fields and transporting goods along the tracks with electric or human-powered carts. However, existing rail systems still have many shortcomings: the monorail design has poor stability, is prone to tilting when turning or driving on slopes, and has limited load capacity. Currently, farm rail transport systems mainly rely on battery power or monorail contact power supply, but both have obvious defects. Battery capacity is limited, and frequent charging or replacement of batteries affects transportation efficiency, especially in large farms or orchards, making it difficult to meet all-weather operation requirements. Although monorail contact power supply can provide continuous energy, the exposed conductive parts are easily affected by moisture, dust, and plant interference, resulting in poor contact, prominent mechanical wear problems, and high maintenance frequency. Summary of the Invention

[0004] In view of this, the present application proposes a rail-type farm transportation system to solve the problems of poor stability of single track, insufficient power supply reliability and high maintenance cost in the existing technology.

[0005] The technical solution of this application is achieved as follows:

[0006] This application provides a track-type farm transport system, comprising:

[0007] A main track assembly, the main track assembly comprising a first main track and a second main track arranged in parallel and spaced apart, the first main track and the second main track being used to connect to a power source;

[0008] The traction device includes a traction frame, a power-taking assembly, an electric energy storage device, and a drive assembly. The traction frame is arranged astride the main track assembly. The power-taking assembly includes a first main track and a second main track. The first power-taking wheel is rotatably mounted on one side of the traction frame and maintains rolling contact with the upper surface of the first main track; the second power-taking wheel is rotatably mounted on the opposite side of the traction frame and maintains rolling contact with the upper surface of the second main track; the drive assembly includes a power device and a drive wheel and a support wheel rotatably arranged on the traction frame. The drive source is arranged on the traction frame, the drive wheel is transmission-connected to the bottom surface of the second main track, and the support wheel is arranged between the top surface of the second main track and the traction frame;

[0009] Among them, the first power-taking wheel and the second power-taking wheel are respectively electrically connected to an electric energy storage device fixedly arranged on the traction frame. The electric energy storage device is used to store the track power supply energy and directly power the track power supply energy to the power device. The power device drives the traction device to move along the main track assembly through the driving wheel.

[0010] On the basis of the above technical solution, preferably, the power taking assembly further includes a first wheel frame and a second wheel frame, the first power taking wheel is insulated and fixedly connected to the traction frame through the first wheel frame, and the second power taking wheel is fixedly connected to the traction frame through the second wheel frame.

[0011] On the basis of the above technical solution, preferably, the first wheel frame includes a retaining frame, a rotating bracket, an insulating member, a connecting rod and an elastic member. The first power-taking wheel is rotatably provided at both ends of the retaining frame. The rotating bracket is rotatably connected to the retaining frame and the rotating axis is parallel to the axis of the first power-taking wheel. The upper end of the connecting rod is fixedly connected to the traction frame through the insulating member, and the lower end is movable through the rotating bracket and is provided with a limiting portion. The elastic member is sleeved on the connecting rod, and its two ends respectively abut the traction frame and the rotating bracket.

[0012] On the basis of the above technical solution, preferably, the traction frame includes a load-bearing plate and a mounting plate vertically fixed to the bottom of the load-bearing plate, the tail of the mounting plate is provided with a trailer hook for mounting a transport trolley, the first power-taking wheel is insulatedly connected to the load-bearing plate through a first wheel frame, the second power-taking wheel is connected to the load-bearing plate through a second wheel frame, and the driving wheel is located on the side wall of the mounting plate and in contact with the bottom surface of the second main track;

[0013] The power device includes a rotating motor, a reducer and a transmission member. The rotating motor is fixedly arranged on the top surface of the supporting plate, the reducer is fixedly arranged on the side wall of the mounting plate, the output shaft of the reducer is fixedly connected to the driving wheel, and the output shaft of the rotating motor is connected to the input shaft of the reducer through the transmission member.

[0014] On the basis of the above technical solution, preferably, the driving assembly also includes a guide wheel, which is rotatably arranged at the lower part of the side wall of the mounting plate and contacts the bottom surface of the second main rail, and the support wheel and the guide wheel are arranged up and down in the vertical direction, and the driving wheel and the second power-taking wheel are arranged up and down in the vertical direction.

[0015] On the basis of the above technical solution, preferably, the second main track is a tubular structure with a rectangular cross-section, the bottom surface of which is continuously provided with meshing teeth along the length direction, and the driving wheel includes:

[0016] Two wheels are spaced apart and arranged in parallel and fixedly connected to the output shaft of the reducer through a fixing member;

[0017] a first annular flange, disposed on the inner sides of the two wheel discs and in contact with the bottom surface of the second main track;

[0018] Multiple rollers are evenly distributed between the two wheels, with their axes parallel to the center axis of the wheels;

[0019] Wherein, the roller forms a transmission engagement with the meshing teeth on the bottom surface of the second main track.

[0020] On the basis of the above technical solution, preferably, limiting flanges are provided on both axial sides of the second power-taking wheel, support wheel and guide wheel to form a constraint structure on both sides of the wheel body. The spacing between the limiting flanges is adapted to the width of the second main track. A second annular flange is provided on the inner side of the limiting flange of the guide wheel to form a contact fit with the bottom surface of the second main track, and the outer peripheral surface of the guide wheel has an avoidance groove for accommodating the meshing teeth.

[0021] On the basis of the above technical solution, preferably, the first main track is a circular tubular structure.

[0022] On the basis of the above technical solution, preferably, it further includes a track changing mechanism and at least two groups of branch track groups, wherein the track changing mechanism includes a fixing frame, a track changing frame, an actuator and a plurality of docking track groups that are the same in number as the branch track groups;

[0023] The fixing frame is arranged at the intersection of the main track assembly and the plurality of branch track groups, and the track changing frame is slidably arranged on the fixing frame;

[0024] Each branch track group includes a first branch track and a second branch track arranged in parallel;

[0025] Each docking track set includes a first docking track and a second docking track arranged in parallel and fixed on the top of the track changing frame;

[0026] The actuator is arranged on the fixed frame and is used to drive the track changing frame to move horizontally, so that the first docking track in the selected docking track group connects the first main track and the first branch track of the corresponding branch track group, and the second docking track connects the second main track and the second branch track of the corresponding branch track group.

[0027] On the basis of the above technical solution, preferably, the curvature radii of the first docking track and the second docking track of the docking track group are respectively consistent with the curvature radii of the first diverging track and the second diverging track of the corresponding diverging track group.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] (1) The rail-type farm transport system disclosed in this application achieves high stability, high power supply reliability and low maintenance cost of the farm transport system through a dual-track power supply structure and an optimized traction device design. The dual-track design solves the problem of insufficient stability of the single-track system, and at the same time reduces the wear of electrical components and environmental interference through rolling contact power supply. The introduction of the power storage device ensures the continuity of power supply, and the coordination of the drive assembly and the support wheel further improves the load capacity and operating stability of the system. Overall, this solution provides an efficient, safe and easy-to-maintain solution for material transportation on farms or orchards.

[0030] (2) By optimizing the specific structure of the first wheel frame, dynamic and stable contact between the power-taking wheel and the track is achieved. Its dual-power-taking wheel design, the flexible adjustment capability of the rotating bracket, and the buffering effect of the elastic parts together ensure the reliable operation of the traction device under various terrain and load conditions. In addition, the introduction of insulating parts further improves electrical safety, making the system more adaptable to harsh agricultural environments. Overall, this structural design significantly enhances the stability, durability, and safety of the rail-type farm transportation system, providing reliable technical support for all-weather, high-efficiency agricultural transportation.

[0031] (3) By setting a guide wheel below the support wheel, the support wheel and the guide wheel are arranged vertically up and down, and the drive wheel and the second power-taking wheel are arranged vertically up and down. With this arrangement, the second power-taking wheel and the drive wheel form a first set of upper and lower clamping structures, which mainly undertake power transmission and active drive functions; the support wheel and the guide wheel form a second set of upper and lower clamping structures, which focus on vertical load support and running trajectory control. This "electric-mechanical" dual-channel design achieves functional decoupling, so that the power transmission system is not disturbed by mechanical vibration, while ensuring that the drive system does not affect the stability of power collection.

[0032] (4) The rack-and-rail meshing transmission system solves the technical problems of low power transmission efficiency and slippage on slopes in the rail transportation industry. The standardized design of the rectangular tubular track reduces manufacturing costs, and the multi-roller alternating meshing mechanism achieves "zero slip" in power transmission. This design is particularly suitable for orchards or sloping farms that require large loads and long-distance transportation. Its modular structure also facilitates rapid maintenance. Overall, this technical solution improves the reliability, efficiency, and adaptability of the rail-based farm transportation system.

[0033] (5) By setting up a track switching mechanism, the network expansion capability of the rail-type farm transport system is realized. This solution enables a single transport system to serve multiple operating areas, greatly improving equipment utilization and transport efficiency. The modular docking track group design ensures the smoothness and reliability of track switching, while ensuring continuous power supply after track switching. This technical solution breaks through the limitations of single-route transportation, builds a true farm rail transport network, and provides a flexible and efficient solution for large-scale farm transport systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the rail-type farm transportation system disclosed in this application;

[0036] Figure 2 This is a schematic diagram of the three-dimensional assembly structure of the main track assembly and the traction device disclosed in this application;

[0037] Figure 3 This is a schematic diagram of the planar assembly structure of the main track assembly and traction device disclosed in this application;

[0038] Figure 4 for Figure 2 A partial enlarged view of the middle part;

[0039] Figure 5 This is a schematic diagram of the three-dimensional structure of the traction device disclosed in this application;

[0040] Figure 6 This is a schematic structural diagram of the branch track assembly and track-changing mechanism disclosed in this application;

[0041] Reference numerals:

[0042] 1. Main track assembly; 11. First main track; 12. Second main track; 121. Meshing teeth;

[0043] 2. Traction device; 21. Traction frame; 211. Loading plate; 212. Mounting plate; 2110. Trailer hook;

[0044] 22. Power extraction assembly; 221. First power extraction wheel; 222. Second power extraction wheel; 223. First wheel frame; 224. Second wheel frame; 2231. Retaining frame; 2232. Rotating bracket; 2233. Insulating member; 2234. Connecting rod; 2235. Elastic member; 2236. Limiting portion;

[0045] 23. Power storage device;

[0046] 24. Drive assembly; 241. Power unit; 2411. Rotating motor; 2412. Reducer; 2413. Transmission member; 242. Drive wheel; 243. Support wheel; 244. Guide wheel; 2421. Wheel disc; 2422. First annular flange; 2423. Roller; 2424. Fixing member; P. Limiting flange; 2441. Second annular flange; 2442. Avoidance groove;

[0047] 3. Branch track assembly; 4. Track-changing mechanism; 41. Fixed frame; 42. Track-changing frame; 43. Actuator; 44. Docking track assembly; 31. First branch track; 32. Second branch track; 441. First docking track; 442. Second docking track. DETAILED DESCRIPTION

[0048] The following will be combined with the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] like Figure 1 As shown, combined Figure 2-5 , an embodiment of the present application discloses a rail-type farm transportation system, including a main rail assembly 1 and a traction device 2.

[0050] Among them, the track assembly adopts a first main track 11 and a second main track 12 arranged in parallel and spaced apart. The two tracks are connected to a power source so that current flows into the first main track 11 and the second main track 12. In this embodiment, the first main track 11 can be connected to the positive pole of the power source, and the second main track 12 can be connected to the negative pole of the power source. Of course, the two can be interchanged. This dual-track design not only provides physical support, but also constitutes a complete power supply circuit. Compared with the traditional single-track system, the dual-track structure significantly improves the stability of the system, especially on slopes or turning sections, and can effectively prevent the transport vehicle from tilting or derailing. The two tracks carry currents of different polarities, respectively, so that the power supply system can directly transmit electrical energy to the traction device 2 through the track, avoiding the endurance problem of battery power supply and the reliability defects of single-track contact power supply.

[0051] The traction device 2 is used to drag the transport trolley along the track assembly. Specifically, the traction device 2 includes a traction frame 21, a power supply assembly 22, an electric energy storage device 23 and a drive assembly 24.

[0052] Among them, the traction frame 21 is arranged across the main track assembly 1, and is electrically connected to the track through the power collection assembly 22. In this embodiment, the tail of the traction frame 21 can be connected to multiple transport carts in sequence, so as to achieve driving on a double track. The power collection assembly 22 includes two power collection wheels, which are in rolling contact with the two tracks respectively. Specifically, the first power collection wheel 211 is rotatably mounted on one side of the traction frame 21 and maintains rolling contact with the upper surface of the first main track 11, and the second power collection wheel 222 is rotatably mounted on the opposite side of the traction frame 21 and maintains rolling contact with the upper surface of the second main track 12.

[0053] The first power-taking wheel 221 and the second power-taking wheel 222 are respectively electrically connected to the power storage device 23 fixedly arranged on the traction frame 21 , and the first power-taking wheel 221 and the second power-taking wheel 222 respectively transmit currents of different polarities to the power storage device 23 .

[0054] In this embodiment, the power storage device 23 is used to store track-powered energy and directly power the power unit 241. Specifically, the power storage device 23 includes an electrical box, a battery housed within it, and a motor driver. The electric energy captured by the electric wheels on the track is directly stored in the battery, while the electric energy is directly supplied to the power unit via the motor driver. In the event of a track failure, the battery can serve as a backup power source, maintaining continued operation and ensuring the normal operation of the transportation system.

[0055] This rolling contact method reduces mechanical wear on exposed conductive parts and mitigates the impact of environmental factors (such as moisture and dust) on power supply stability. The power storage device 23, acting as an intermediate energy storage unit, can smooth power supply fluctuations and provide backup power during brief power outages, ensuring the continuity of the transportation process.

[0056] The drive assembly 24 is the power core of the traction device 2, and includes a power unit 241, a drive wheel 242 and a support wheel 243. The power unit 241 is connected to the bottom surface of the second main track 12 through the drive wheel 242 to provide traction. The support wheel 243 is located between the top surface of the second main track 12 and the traction frame 21. The support wheel 243 and the second main track 12 are spaced apart on the top surface of the second main track 12, and form an upper and lower clamping structure with the drive wheel 242, further enhancing the connection stability between the vehicle body and the track. This design not only improves the driving efficiency, but also disperses the vehicle body load through multi-point contact to avoid local overload of the track. The power unit 241 is powered by the power storage device 23, forming a closed-loop energy flow path. The entire process from taking power from the track to driving output is efficient and reliable.

[0057] In the embodiment, the first power-collecting wheel 221 is located on the first main rail 11 and serves as the fulcrum between the traction device 2 and the first main rail 11. In order to improve the operating stability of the traction device 2 on the upper double rail, two first power-collecting wheels 221 are provided and are spaced apart on the traction frame 21 along the axial direction of the first main rail 11.

[0058] This improvement allows the traction device 2 to have two wheels supporting both the first main track 11 and the second main track 12, forming a four-point contact structure (two first power-taking wheels 221 + one second power-taking wheel 222 + one support wheel 243). Compared to a single-point contact structure, the design of two first power-taking wheels 221 can more evenly distribute the load of the traction device 2, reducing the force on a single wheel, thereby reducing wear and improving operational stability.

[0059] The rail-type farm transport system disclosed in this application achieves high stability, high power supply reliability and low maintenance cost of the farm transport system through a dual-track power supply structure and an optimized traction device 2 design. The dual-track design solves the problem of insufficient stability of the single-track system, while reducing the wear of electrical components and environmental interference through rolling contact power supply. The introduction of the power storage device 23 ensures the continuity of power supply, while the cooperation of the drive assembly 24 and the support wheel 243 further enhances the load capacity and operational stability of the system. Overall, this solution provides an efficient, safe and easy-to-maintain solution for the transportation of materials on farms or orchards.

[0060] In some embodiments, the power extraction assembly 22 further includes a first wheel frame 223 and a second wheel frame 224. The first power extraction wheel 221 is insulated and fixedly connected to the traction frame 21 via the first wheel frame 223, and the second power extraction wheel 222 is fixedly connected to the traction frame 21 via the second wheel frame 224. By having the first power extraction wheel 221 insulated and fixedly connected to the traction frame 21 via the first wheel frame 223, the current on the first main track 11 can be prevented from being conducted to the traction frame 21. Even if the second power extraction wheel 222 introduces the current on the second main track 12 to the traction frame 21, no current loop will be generated between the first power extraction wheel 221, the traction frame 21, and the second power extraction wheel 222, thereby ensuring the stability of power transmission.

[0061] This embodiment shows a structural mode of the first wheel frame 223 . Specifically, the first wheel frame 223 includes a retaining frame 2231 , a rotating bracket 2232 , an insulating member 2233 , a connecting rod 2234 and an elastic member 2235 .

[0062] The first power-collecting wheels 221 are rotatably mounted on each end of the retaining frame 2231. This dual-wheel arrangement allows the power-collecting assembly 22 to better adapt to the undulations or unevenness of the track, ensuring that at least one power-collecting wheel always maintains good contact with the track, thereby preventing power interruptions caused by localized track deformation or vibration. Furthermore, the dual power-collecting wheel design disperses mechanical wear and extends the service life of the components.

[0063] The rotating bracket 2232 is rotatably connected to the retaining frame 2231, with the rotation axis parallel to the axis of the first power-taking wheel 221. This design allows the power-taking wheel to freely adjust its angle within a certain range to adapt to the curvature or slope of the track. This dynamic adjustment capability significantly improves the operating stability of the traction device 2 on complex terrain (such as ramps and curves) and reduces the risk of derailment or poor contact.

[0064] The combination of the connecting rod 2234 and the elastic member 2235 constitutes a buffer system. The upper end of the connecting rod 2234 is fixedly connected to the traction frame 21 through the insulating member 2233 to ensure the safety of electrical isolation; the lower end moves through the rotating bracket 2232 and is provided with a limit portion 2236 to prevent excessive displacement. The elastic member 2235 (such as a spring) is mounted on the connecting rod 2234, and its two ends respectively abut the traction frame 21 and the rotating bracket 2232, providing continuous pressure to the power-taking wheel to ensure its close contact with the track surface. This elastic support structure can not only absorb track vibration and impact, but also automatically compensate for the wear of the track or the power-taking wheel to maintain a stable contact force.

[0065] The provision of insulator 2233 further enhances electrical safety, preventing current from leaking through metal components to the traction frame 21 or other unintended paths, thereby avoiding the risk of short circuits or electric shock. This is particularly important in humid or dusty farm environments and can significantly improve system reliability and safety.

[0066] In this embodiment, except for the insulating part 2233, the other parts of the first wheel frame 223 are all made of conductive materials. In this way, the first power-taking wheel 221 finally transmits the current on the first main track 11 to the power storage device 23 through the connecting rod 2234 connected to the transmission line. The second wheel frame 224 can be composed of a base and a support that are connected to each other. Specifically, the base of the second wheel frame 224 is fixedly connected to the traction frame 21, and the second power-taking wheel 222 is rotatably set on the support. The second power-taking wheel 222 transmits the current on the second main track 12 to the power storage device 23 through the second wheel frame 224 connected to the transmission line.

[0067] In this embodiment, the second wheel frame 224 is preferably made entirely of metal, and the second power-collecting wheel, the second wheel frame, and the traction frame are electrically connected. This structural arrangement prevents a current loop from being generated between the first power-collecting wheel, the traction frame, and the second power-collecting wheel, thereby preventing a short circuit between the first main rail and the second main rail. Furthermore, no insulation is required between the second power-collecting wheel and the traction frame.

[0068] By optimizing the specific structure of the first wheel frame 223, dynamic and stable contact between the first power-taking wheel 221 and the first main rail 11 is achieved. Its dual power-taking wheel design, the flexible adjustment capability of the rotating bracket 2232, and the buffering effect of the elastic member 2235 together ensure the reliable operation of the traction device 2 under various terrain and load conditions. In addition, the introduction of the insulating member 2233 further enhances electrical safety, making the system more adaptable to harsh agricultural environments. Overall, this structural design significantly enhances the stability, durability, and safety of the rail-type farm transport system, providing reliable technical support for all-weather, high-efficiency agricultural transportation.

[0069] In some embodiments, the traction frame 21 consists of a load-bearing plate 211 and a mounting plate 212 vertically fixed to its bottom. This L-shaped structure not only provides sufficient rigidity to withstand transport loads but also facilitates modular assembly of various components. A trailer hook 2110 is provided at the rear of the mounting plate 212, making it easier to attach and detach transport carts. The number and type of attachments can be flexibly adjusted based on transport needs, improving the system's adaptability.

[0070] In this embodiment, the second power-taking wheel 222 and the support wheel 243 are in contact with the top surface of the second main rail 12, and the drive wheel 242 is in contact with the bottom surface of the second main rail 12. On the one hand, the second main rail 12 has wheels on the upper and lower parts to realize the upper and lower clamping structure. The second power-taking wheel 222 and the support wheel 243 provide vertical load support, and the drive wheel 242 provides power transmission. The drive wheel 242 transmits power along the second main rail 12, so that the entire traction device 2 can take power and transmit power along the double tracks.

[0071] The power unit 241 includes a rotating motor 2411, a reducer 2412 and a transmission member 2413. The rotating motor 2411 is fixedly arranged on the top surface of the supporting plate 211, and the reducer 2412 is fixedly arranged on the side wall of the mounting plate 212. The output shaft of the reducer 2412 is fixedly connected to the driving wheel 242, and the output shaft of the rotating motor 2411 is connected to the input shaft of the reducer through the transmission member 2413.

[0072] In this embodiment, the transmission member 2413 is a pulley transmission structure or a sprocket chain transmission structure.

[0073] The modular design of the traction frame 21 and the integrated layout of the power unit 241 achieve comprehensive improvements in system load capacity, operational stability, and ease of maintenance. The introduction of the trailer coupler 2110 enhances transport flexibility, while the optimized power transmission path ensures efficient energy conversion and reliable traction output. The comprehensive insulation design further strengthens the system's environmental adaptability.

[0074] As some embodiments, the drive assembly 24 of this embodiment also includes a guide wheel 244, which is rotatably arranged at the lower part of the side wall of the mounting plate 212 and contacts the bottom surface of the second main track 12. The support wheel 243 and the guide wheel 244 are arranged vertically up and down, and the drive wheel 242 and the second power-taking wheel 222 are arranged vertically up and down. With this arrangement, the second power-taking wheel 222 and the drive wheel 242 constitute a first set of upper and lower clamping structures, which mainly undertake power transmission and active drive functions; the support wheel 243 and the guide wheel 244 constitute a second set of upper and lower clamping structures, which focus on vertical load support and running trajectory control. This "electrical-mechanical" dual-channel design realizes functional decoupling, so that the power transmission system is not disturbed by mechanical vibration, while ensuring that the drive system does not affect the stability of power collection.

[0075] In this embodiment, the support wheel 243 , the guide wheel 244 , the driving wheel 242 and the second power-collecting wheel 222 are all electrically connected to the traction frame.

[0076] In order to improve the reliability and efficiency of power transmission, this embodiment also improves the structures of the second main track 12 and the driving wheel 242.

[0077] Specifically, the second main track 12 utilizes a tubular structure with a rectangular cross-section, ensuring both track rigidity and load-bearing capacity while facilitating standardized production and installation. Meshing teeth 121, continuously arranged along the track's underside along its length, provide a precise transmission interface for the drive wheel 242. This rack-and-rail design completely eliminates the slippage problem associated with traditional friction drives, ensuring 100% effective power transmission, particularly on slopes or in slippery conditions, significantly improving the system's operational reliability in harsh environments.

[0078] In order to achieve effective transmission between the driving wheel 242 and the second main track 12, this embodiment discloses a structural method of the driving wheel 242. Specifically, the driving wheel 242 includes two parallel and spaced pairs of wheel discs 2421. The two wheel discs 2421 are connected to the output shaft of the reducer 2412 through a fixing member 2424, forming a stable support frame. The first annular flange 2422 provided on the inner side of the wheel disc 2421 maintains contact with the bottom surface of the track, bears part of the vertical load of the traction device 2, and plays a guiding and stabilizing role. The multiple rollers 2423 evenly distributed between the two wheel discs 2421 have axes parallel to the central axis of the wheel disc 2421. This layout enables each roller 2423 to form a relay transmission with the track meshing teeth 121 in turn, converting point contact into continuous line contact, significantly reducing the wear of individual teeth.

[0079] The design of alternating meshing of multiple rollers 2423 has three major advantages: first, it reduces meshing impact and ensures smoother operation; second, it improves mechanical efficiency by replacing sliding friction with rolling friction of rollers 2423; and third, it allows a certain manufacturing tolerance for track tooth pitch, making the system more fault-tolerant.

[0080] The rack-and-rail meshing transmission system overcomes technical challenges in rail-based transportation, such as low power transmission efficiency and slippage on slopes. The standardized rectangular tubular track design reduces manufacturing costs, while the multi-roller 2423 alternating meshing mechanism achieves "zero slip" power transmission. This design is particularly suitable for orchards or sloping farms that require heavy loads and long-distance transport. Its modular structure also facilitates rapid maintenance. Overall, this technical solution improves the reliability, efficiency, and adaptability of rail-based farm transportation systems.

[0081] In this embodiment, the first main rail 11 adopts a circular tubular structure. The circular tubular rail significantly improves the continuity and stability of power transmission due to its omni-circumferential contact characteristics; and the second main rail 12 adopts a rectangular tubular rail structure, which provides reliable mechanical support for the system with its excellent bending resistance.

[0082] Based on the above technical solution, limiting flanges P are provided on both axial sides of the second power extraction wheel 222, support wheel 243, and guide wheel 244, forming a restraining structure on both sides of the wheel body. These three wheels are arranged in an "I" shape. The spacing between the limiting flanges P is adapted to the width of the second main track 12. This arrangement ensures that the preset contact pressure between the wheel body and the track is always maintained, neither shaking caused by excessive gaps nor increased friction resistance due to an overly tight fit.

[0083] A second annular flange 2441 is provided on the inner side of the limiting flange P of the guide wheel 244, which forms a contact fit with the bottom surface of the second main track 12, thereby realizing the diversion and bearing of the vertical load. The outer peripheral surface of the guide wheel 244 has an avoidance groove 2442 for accommodating the meshing teeth 121. The groove type adopts an involute profile design to ensure that when the guide wheel 244 rotates, the meshing teeth 121 on the bottom surface of the second main track 12 can smoothly pass through the avoidance groove 2442.

[0084] In a farm, there may be demands for track transportation on different paths. For example, when switching from the main track path to the branch track is required, it is necessary to ensure that the traction device 2 can quickly switch from the main track path to the corresponding branch track. This embodiment is achieved through the following solution.

[0085] Specifically, the rail-type farm transport system of this embodiment also introduces a track-changing mechanism 4 and at least two groups of branch track groups 3, providing a key path switching capability for the rail-type farm transport network.

[0086] Refer to the attached Figure 6 As shown, the track-changing mechanism 4 disclosed in this embodiment includes a fixing frame 41 , a track-changing frame 42 , an actuator 43 and a docking track group 44 , the number of which is the same as the number of the branch track groups 3 .

[0087] The fixed frame 41 is set as the basic support structure at the intersection of the tracks, and the sliding mechanism set inside it allows the track change frame 42 to perform precise horizontal displacement. This arrangement ensures both structural stability and the accuracy of track docking.

[0088] Each branch track set 3 includes a first branch track 31 and a second branch track 32, arranged in parallel, and maintaining the same electrical characteristics and mechanical specifications as the main track. This standardized design allows the system to flexibly add branch routes based on farm layout requirements without changing the basic structure of the traction device 2.

[0089] Each set of docking rails includes a first docking rail 441 and a second docking rail 442 arranged in parallel, which are fixed on the top of the track change frame 42 to form an independent module. When the actuator 43 (such as a hydraulic cylinder or an electric push rod) drives the track change frame 42 to move, it drives the entire docking rail group 44 to move synchronously, ensuring that the two rails always maintain the same relative position. This design avoids the track misalignment problem that may be caused by single-track switching and maintains the integrity of the dual-track system. The connection surface between the docking rail and the main track and the branch track adopts a bevel transition design to ensure that the traction device 2 can pass through the interface smoothly.

[0090] In some embodiments, the contact surfaces of the docking rails with the main rails and the branch rails are equipped with elastic conductive components. This automatically establishes an electrical connection during mechanical docking, maintaining the integrity of the power supply circuit. This design avoids power interruptions common in traditional switch systems, ensuring that the traction device 2 receives continuous power when passing through the branch.

[0091] When the traction device 2 is running on the main rail assembly 1 and is about to reach the track changing mechanism 4, for example, 2m-10m away from the track changing mechanism, the traction device 2 stops. At this time, the actuator 43 is actuated to drive the track changing frame 42 to move horizontally, so that the first docking rail 441 in the selected docking rail group 44 connects the first main rail 11 and the first branch rail 31 of the corresponding branch rail group 3, and the second docking rail 442 connects the second main rail 12 and the second branch rail 32 of the corresponding branch rail group 3. After the main rail assembly 1 is mechanically and electrically connected with the corresponding branch rail group 3 through the corresponding docking rail group 44, the traction device 2 can continue to move along the rail path.

[0092] The installation of a track-switching mechanism 4 enables networked scalability of the rail-based farm transport system. This solution enables a single transport system to serve multiple operating areas, significantly improving equipment utilization and transport efficiency. The modular docking track assembly 44 design ensures smooth and reliable track switching, while also guaranteeing continuous power supply after track switching. This technical solution overcomes the limitations of single-route transport, establishing a true farm rail transport network and providing a flexible and efficient solution for large-scale farm transport systems.

[0093] In some embodiments, the curvature radii of the first docking track 441 and the second docking track 442 of the docking track set 44 are respectively consistent with the curvature radii of the first diverging track 31 and the second diverging track 32 of the corresponding diverging track set 3 .

[0094] By precisely matching the curvature radius of the docking track with the branch track, the track system achieves a "senseless transition" when switching paths. This design ensures that the dynamic performance of the traction device 2 when passing through a branch track is essentially equivalent to that of a straight section, completely resolving the technical issues of traditional switch systems, such as high impact vibration and severe wear.

[0095] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A rail-type farm transport system, characterized in that: include: A main track assembly (1), comprising a first main track (11) and a second main track (12) arranged in parallel and spaced apart, the first main track (11) and the second main track (12) being used for connecting to a power source; The traction device (2) comprises a traction frame (21), a power collection component (22), an electric energy storage device (23) and a drive component (24), wherein the traction frame (21) is arranged above the main track component (1), and the power collection component (22) comprises a first power collection wheel (221) and a second power collection wheel (222), wherein the first power collection wheel (221) is rotatably mounted on one side of the traction frame (21) and maintains rolling contact with the upper surface of the first main track (11); the second power collection wheel (222) is rotatably mounted on the upper surface of the first main track (11); and the second power collection wheel (222) is rotatably mounted on the upper surface of the first main track (11). The driving assembly (24) is mounted on a side opposite to the traction frame (21) and maintains rolling contact with the upper surface of the second main track (12); the driving assembly (24) includes a power device (241) and a driving wheel (242) and a supporting wheel (243) rotatably arranged on the traction frame (21); the driving source is arranged on the traction frame (21); the driving wheel (242) is in transmission connection with the bottom surface of the second main track (12); and the supporting wheel (243) is arranged between the top surface of the second main track (12) and the traction frame (21); The first power-taking wheel (221) and the second power-taking wheel (222) are respectively electrically connected to an electric energy storage device (23) fixedly arranged on the traction frame (21); the electric energy storage device (23) is used to store track power supply energy and simultaneously directly use the track power supply energy to power a power device (241); and the power device (241) drives the traction device (2) to move along the main track assembly (1) via a driving wheel (242).

2. The rail-type farm transport system according to claim 1, characterized in that: The power extraction assembly (22) further comprises a first wheel frame (223) and a second wheel frame (224); the first power extraction wheel (221) is insulated and fixedly connected to the traction frame (21) via the first wheel frame (223); and the second power extraction wheel (222) is fixedly connected to the traction frame (21) via the second wheel frame (224).

3. The track-type farm transport system according to claim 2, wherein: The first wheel frame (223) comprises a retaining frame (2231), a rotating bracket (2232), an insulating member (2233), a connecting rod (2234) and an elastic member (2235). The first power-taking wheel (221) is rotatably provided at both ends of the retaining frame (2231). The rotating bracket (2232) is rotatably connected to the retaining frame (2231), and the rotation axis is parallel to the axis of the first power-taking wheel (221). The upper end of the connecting rod (2234) is fixedly connected to the traction frame (21) through the insulating member (2233), and the lower end movably passes through the rotating bracket (2232) and is provided with a limiting portion (2236). The elastic member (2235) is sleeved on the connecting rod (2234), and its two ends respectively abut against the traction frame (21) and the rotating bracket (2232).

4. The rail-type farm transport system according to claim 1, wherein: The traction frame (21) includes a load-bearing plate (211) and a mounting plate (212) vertically fixed to the bottom of the load-bearing plate (211); the tail of the mounting plate (212) is provided with a trailer hook (2110) for mounting a transport trolley; the first power-taking wheel (221) is insulatedly connected to the load-bearing plate (211) via a first wheel frame (223); the second power-taking wheel (222) is connected to the load-bearing plate (211) via a second wheel frame (224); and the driving wheel (242) is located on a side wall of the mounting plate (212) and in contact with the bottom surface of the second main track (12); The power device (241) comprises a rotating motor (2411), a reducer (2412) and a transmission member (2413); the rotating motor (2411) is fixedly arranged on the top surface of the carrier plate (211); the reducer (2412) is fixedly arranged on the side wall of the mounting plate (212); the output shaft of the reducer (2412) is fixedly connected to the driving wheel (242); and the output shaft of the rotating motor (2411) is transmission-connected to the input shaft of the reducer (2412) via the transmission member (2413).

5. The rail-type farm transport system according to claim 4, characterized in that: The driving assembly (24) further includes a guide wheel (244), which is rotatably arranged at the lower portion of the side wall of the mounting plate (212) and contacts the bottom surface of the second main track (12); the support wheel (243) and the guide wheel (244) are arranged vertically up and down; and the driving wheel (242) and the second power-collecting wheel (222) are arranged vertically up and down.

6. The track-type farm transport system according to claim 5, characterized in that: The second main track (12) is a tubular structure with a rectangular cross section, and its bottom surface is continuously provided with meshing teeth (121) along the length direction. The driving wheel (242) includes: Two wheel discs (2421) are spaced apart and arranged in parallel and fixedly connected to the output shaft of the reducer (2412) via a fixing member (2424); A first annular flange (2422) is provided on the inner sides of the two wheel discs (2421) and is in contact with the bottom surface of the second main track (12); A plurality of rollers (2423) are evenly distributed between the two wheels (2421), and the axes of the rollers are parallel to the central axis of the wheels (2421); The roller (2423) forms a transmission engagement with the meshing teeth (121) on the bottom surface of the second main track (12).

7. The track-type farm transport system according to claim 6, characterized in that: The second power-collecting wheel (222), the support wheel (243) and the guide wheel (244) are provided with limiting flanges (P) on both axial sides to form a constraint structure on both sides of the wheel body. The spacing between the limiting flanges (P) is adapted to the width of the second main track (12). A second annular flange (2441) is provided on the inner side of the limiting flange (P) of the guide wheel (244) to form a contact fit with the bottom surface of the second main track (12). The outer peripheral surface of the guide wheel (244) has an avoidance groove (2442) for accommodating the meshing teeth (121).

8. The rail-type farm transport system according to claim 1, wherein: The first main track (11) is a circular tube structure.

9. The rail-type farm transport system according to claim 1, wherein: It also includes a track-changing mechanism (4) and at least two groups of branch track groups (3), wherein the track-changing mechanism (4) includes a fixing frame (41), a track-changing frame (42), an actuator (43) and a docking track group (44) having the same number as the branch track group (3); The fixing frame (41) is arranged at the intersection of the main track assembly (1) and the plurality of branch track assemblies (3), and the track changing frame (42) is slidably arranged on the fixing frame (41); Each branch track group (3) comprises a first branch track (31) and a second branch track (32) arranged in parallel; Each docking track set (44) comprises a first docking track (441) and a second docking track (442) arranged in parallel and fixed on the top of the track changing frame (42); An actuator (43) is provided on a fixed frame (41) and is used to drive the track changing frame (42) to move horizontally, so that a first docking track (441) in a selected docking track group (44) connects the first main track (11) and the first branch track (31) of the corresponding branch track group (3), and a second docking track (442) connects the second main track (12) and the second branch track (32) of the corresponding branch track group (3).

10. The rail-type farm transport system according to claim 9, characterized in that: The curvature radii of the first docking track (441) and the second docking track (442) of the docking track set (44) are respectively consistent with the curvature radii of the first diverging track (31) and the second diverging track (32) of the corresponding diverging track set (3).

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