Rail conveyor suitable for loading, unloading and transferring agricultural machinery and loading, unloading and transferring method thereof

Abstract

The present invention discloses a rail conveyor suitable for loading, unloading and transferring agricultural machinery and a loading, unloading and transferring method thereof. The rail conveyor comprises a rail and a transport vehicle; the transport vehicle comprises a vehicle frame, a travel drive device, a leveling device, a loading platform and a transfer device; the leveling device comprises a leveling platform and leveling legs, one end of the leveling legs being hinged to the leveling platform and the other end being hinged to the vehicle frame; the loading platform is rotatably connected to the leveling platform; the transfer device comprises a lifting and unloading platform and a retracting and extending mechanism for driving the lifting and unloading platform to move; the lifting and unloading platform comprises a support frame, a boarding plate and a vertical drive mechanism. The rail conveyor can transport, load, unload and transfer agricultural machinery of larger size and mass, allowing agricultural machinery to enter different planting planes in mountainous areas and hills. The rail conveyor also has the advantages of simple structure, easy operation and reliable performance.

Description

Technical Field

[0001] The present invention relates to the field of transportation by laying tracks in mountainous areas, and in particular to a track conveyor suitable for loading, unloading and transferring agricultural machinery and a loading, unloading and transferring method thereof. Background Art

[0002] Mountains and hills are both fundamental landforms of the world. Mountains generally refer to landforms with significant elevations above 500 meters. Hills are defined as gently undulating slopes of various rock types within 500 meters in absolute elevation and no more than 200 meters in relative elevation. These slopes are characterized by gentle undulations, a gentle slope, and a rugged surface, consisting of a continuous series of low hills. Due to geographical constraints, large areas of grain and fruit crops are typically cultivated in mountainous and hilly areas. To address transportation difficulties over complex road conditions and reduce labor costs, mountain and hill transportation equipment such as rail transporters have emerged. Rail transporters are currently primarily used to transport crops, water, fertilizer, and small tools. However, depending on the different altitudes of the mountains, planting operations will be carried out on different planes. However, due to the rugged and uneven terrain of mountains and hills, it is difficult for machinery for planting operations to enter the planting planes of the mountains. For agricultural machinery with larger size and mass, there is currently no rail transportation equipment that can flexibly and effectively transport agricultural machinery and load, unload and transfer agricultural machinery. Therefore, there is an urgent need for a rail transport machine suitable for loading, unloading and transferring agricultural machinery. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned problems and provide a rail conveyor suitable for loading, unloading and transferring agricultural machinery. The rail conveyor can transport, load and unload and transfer agricultural machinery of larger size and mass, so that agricultural machinery can enter different planting planes in mountains and hills. The rail conveyor also has the advantages of simple structure, easy operation and reliable performance.

[0004] Another object of the present invention is to provide a method for loading, unloading and transferring a rail conveyor suitable for loading, unloading and transferring agricultural machinery.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A rail transporter suitable for loading, unloading and transferring agricultural machinery comprises a rail and a transport vehicle arranged on the rail for transporting agricultural machinery; the transport vehicle comprises a frame, a travel drive device, a leveling device, a loading platform and a transfer device; wherein,

[0007] The frame is slidably arranged on the track, and the travel drive device is used to drive the frame to travel on the track;

[0008] The leveling device includes a leveling platform and a leveling leg with a telescopic function, wherein the front end of the leveling platform is hinged to the vehicle frame; the leveling leg is arranged between the leveling platform and the vehicle frame; one end of the leveling leg is hinged to the middle or rear end of the leveling platform, and the other end is hinged to the rear end of the vehicle frame;

[0009] The loading platform is used to place agricultural machinery, the loading platform is rotatably connected to the leveling platform, and a rotation driving mechanism is provided between the loading platform and the leveling platform for driving the loading platform to rotate on the leveling platform;

[0010] The transfer device is used to transfer agricultural machinery on the ground to the loading platform or to transfer agricultural machinery on the loading platform to the ground; the transfer device includes a lifting and unloading platform arranged at the rear end of the loading platform and a retracting and extending mechanism arranged between the loading platform and the lifting and unloading platform for driving the lifting and unloading platform to move between the ground and the loading platform; wherein, the lifting and unloading platform includes a support frame, a boarding plate slidingly arranged on the support frame and a vertical driving mechanism for driving the boarding plate to move in a vertical direction.

[0011] The working principle of the above-mentioned rail transporter suitable for loading, unloading and transferring agricultural machinery is:

[0012] The track is laid on mountains and hills. When agricultural machinery needs to be loaded, the transport vehicle is parked at the corresponding position, and the leveling platform is driven to swing along the hinge position of the front end by extending and retracting the leveling legs to adjust the leveling platform to a horizontal level; then the rotary drive mechanism drives the loading platform to rotate to 90 degrees, so that the length direction of the loading platform is perpendicular to the length direction of the leveling platform; the retracting mechanism drives the lifting and unloading platform to move from the loading platform to the ground, and the boarding plate is at the lowest position of the support frame; then the agricultural machinery is driven onto the boarding plate, and the vertical drive mechanism drives the boarding plate to rise to be flush with the loading platform or The position of the loading platform is slightly higher than that of the loading platform; the agricultural machinery moves from the boarding board to the loading platform; then the vertical drive mechanism drives the boarding board to descend to the lowest position; the retracting mechanism drives the lifting and unloading platform to lift to the specified height, and then the rotary drive mechanism drives the loading platform to rotate 90 degrees in the opposite direction, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and unloading platform is placed on the leveling platform, realizing the storage of the lifting and unloading platform; the traveling drive device drives the frame to move on the track, and the transport vehicle can go to the work place where agricultural machinery is needed (i.e. different planting planes).

[0013] After the transport vehicle arrives at the work site, the agricultural machinery needs to be unloaded. First, the leveling legs are extended and retracted to drive the leveling platform to swing along the hinged position at the front end, and the leveling platform is adjusted to a horizontal level. Then, the rotary drive mechanism is used to drive the loading platform to rotate to 90°, so that the length direction of the loading platform is perpendicular to the length direction of the leveling platform. The retracting mechanism drives the lifting and loading and unloading platform to move from the loading platform to the ground. The vertical drive mechanism drives the boarding plate to rise to a position flush with the loading platform or slightly higher than the loading platform or slightly lower than the loading platform. The agricultural machinery moves from the loading platform to the boarding plate, and the vertical drive mechanism drives the boarding plate to descend to the ground, and the agricultural machinery moves from the boarding plate to the ground. Finally, the retracting mechanism drives the lifting and loading and unloading platform to lift to the specified height, and then the rotary drive mechanism drives the loading platform to rotate in the opposite direction to 90°, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and loading and unloading platform is placed on the leveling platform, realizing the storage of the lifting and loading and unloading platform.

[0014] In a preferred embodiment of the present invention, a vertical guide mechanism is provided between the boarding platform and the support frame for guiding the boarding platform's movement on the support frame. The vertical guide mechanism includes vertical guide rails vertically disposed on both sides of the support frame, and a sliding assembly disposed on the boarding platform and slidably connected to the vertical guide rails. The sliding assembly includes a guide frame disposed on the boarding platform and a plurality of guide wheels disposed on the guide frame. The guide frame moves up and down along the vertical guide rails under the constraints of the plurality of guide wheels. The provision of the vertical guide mechanism enables the boarding platform to move stably on the support frame, thereby ensuring the stability of agricultural machinery transfer.

[0015] Preferably, the vertical guide rail is a foldable vertical guide rail, which includes a fixed guide rail fixed on the support frame and a movable folding guide rail arranged at the upper end of the fixed guide rail; a folding drive mechanism is provided between the folding guide rail and the support frame, and the folding drive mechanism includes a first connecting rod, a second connecting rod and a folding hydraulic rod; the head end of the first connecting rod is hinged to the support frame, the head end of the second connecting rod is hinged to the upper end of the folding guide rail, the cylinder body of the folding hydraulic rod is hinged to the support frame, and the telescopic rod of the folding hydraulic rod is hinged together with the end of the first connecting rod and the end of the second connecting rod. In the above structure, by providing a foldable vertical guide rail, the height dimension of the vertical guide rail can be reduced, making the structure more compact. When loading agricultural machinery, the retractable mechanism drives the lifting and unloading platform to move from the loading platform to the ground (at this time, the boarding platform is at the lowest position), the folding hydraulic rod extends, driving the first and second connecting rods to swing, and driving the folding guide rail to swing upward until the folding guide rail is collinear with the fixed guide rail. At this time, the folding hydraulic rod, the first and second connecting rods are also in the dead point position (i.e., the first and second connecting rods are in a straight line), ensuring the stability of the folding guide rail. After loading is completed, when folding is required, the folding hydraulic rod shortens to achieve folding of the folding guide rail. Then, the agricultural machinery is driven onto the boarding platform and the agricultural machinery can be raised or lowered. When the agricultural machinery on the ground needs to be transferred to the loading platform (i.e., when loading the agricultural machinery) or when the agricultural machinery on the loading platform needs to be transferred to the ground (i.e., when unloading the agricultural machinery), the folding guide rail is collinear with the fixed guide rail. When transporting the agricultural machinery, the folding guide rail is in a folded state.

[0016] Furthermore, the folding hydraulic rod, the first connecting rod, the second connecting rod and the folding guide rail are located on the same plane, so that the folding guide rail can be rotated within the same plane to achieve folding.

[0017] Furthermore, the fixed guide rail and the folding guide rail are connected via a hinge structure, so that the folding guide rail can rotate around the hinge structure.

[0018] Preferably, the vertical drive mechanism includes a lifting hydraulic rod, a chain, and a sprocket vertically disposed on either side of the support frame; one end of the chain is connected to the guide frame, and the other end is connected to the upper end of the support frame; the sprocket is disposed on the telescopic rod of the lifting hydraulic rod and meshes with the chain. In the above structure, the lifting hydraulic rod drives the telescopic rod upward, thereby driving the sprocket upward. The cooperation between the sprocket and the chain also causes the chain to move, driving the guide wheel upward on the vertical guide rail, thereby achieving the upward movement of the boarding platform; conversely, the downward movement of the boarding platform is achieved.

[0019] Preferably, the travel drive device is positioned in the middle of the track and includes a rack parallel to the track, a travel gear mounted on the vehicle frame, and a hydraulic motor for rotating the travel gear; the travel gear meshes with the rack. In this structure, the track can bear weight, ensuring stable operation of the vehicle frame. The travel drive device is positioned in the middle of the track, making it easier to drive the vehicle frame along the track and providing more uniform force distribution. The hydraulic motor drives the travel gear, thereby changing the position of the travel gear on the rack and driving the vehicle frame.

[0020] Preferably, the rotary drive mechanism includes a ring gear disposed on the leveling platform, a drive gear disposed at the lower end of the loading platform, and a power source for driving the drive gear; the drive gear meshes with the outer side of the ring gear. By providing the rotary drive mechanism, the power source drives the drive gear to rotate, causing the drive gear to rotate along the outer side of the ring gear, thereby driving the loading platform to rotate, with the loading platform being able to rotate left and right by an angle greater than 90 degrees each time.

[0021] Furthermore, a rotational guide mechanism is provided between the loading platform and the ring gear. The rotational guide mechanism includes a plurality of guide rollers evenly distributed along the circumference. The guide rollers are engaged and connected to the inner side of the ring gear, and the upper ends of the guide rollers are fixedly connected to the lower end of the loading platform. The rotational guide mechanism ensures the stability of the loading platform's rotation.

[0022] Preferably, the retractable mechanism is a hydraulic cylinder assembly, one end of which is hinged to the rear end of the loading platform and the other end is hinged to the support frame. By providing a hydraulic cylinder assembly, similar to the hydraulic cylinder assembly of a truck tailgate, the retractable and retractable lifting platform can be achieved. The retractable mechanism can lift the lifting platform to a certain height and place it on the leveling platform (retracting action); it can also lower the lifting platform to the ground (extending action).

[0023] Furthermore, the hydraulic cylinder group includes a first retractable hydraulic cylinder and a second retractable hydraulic cylinder arranged on both sides of the loading platform, the first retractable hydraulic cylinders on both sides are symmetrically arranged, and the second retractable hydraulic cylinders on both sides are symmetrically arranged; one end of the first retractable hydraulic cylinder is hinged to the rear end of the loading platform, and the other end is hinged to the upper end of the support frame; one end of the second retractable hydraulic cylinder is hinged to the loading platform, and the other end is hinged to the middle part of the support frame. In the above structure, the lifting and unloading platform is retracted and extended by the coordinated action of the two first retractable hydraulic cylinders and the two second retractable hydraulic cylinders; the length of the leveling platform is greater than the length of the loading platform. When the lifting and unloading platform is retracted, the support frame is lifted to a certain height by the retractable mechanism, and then the loading platform is rotated to the walking position, and then the lifting and unloading platform can be placed on the extended part of the leveling platform; when the lifting and unloading platform is placed on the ground, the opposite action is performed to place the support frame on the ground.

[0024] Preferably, the rail conveyor also includes a power supply system and a control system. The power supply system includes a generator station and a hydraulic station. The generator station and hydraulic station provide the necessary electricity and hydraulic power for the travel drive device, leveling device, rotary drive mechanism, retractable mechanism, vertical drive mechanism, and folding drive mechanism. The control system is used to control and regulate these electrical and hydraulic signals. The control system enables automatic control of the transport vehicle. The generator station provides electricity to each component, and the hydraulic station provides hydraulic power to each component. The control system controls the electrical and hydraulic signals to achieve operational control of the travel drive device, leveling device, rotary drive mechanism, retractable mechanism, vertical drive mechanism, and folding drive mechanism.

[0025] A method for loading, unloading and transferring agricultural machinery on a rail conveyor includes the following steps:

[0026] (1) When agricultural machinery needs to be loaded, the transport vehicle should be parked at the location where the agricultural machinery needs to be loaded;

[0027] (2) By extending and retracting the leveling legs, the leveling platform on the frame is driven to swing along the hinge position at the front end, and the leveling platform is adjusted to a horizontal level;

[0028] (3) The rotary drive mechanism drives the loading platform to rotate to 90° so that the length direction of the loading platform and the length direction of the leveling platform are perpendicular to each other;

[0029] (4) The retracting and extending mechanism drives the lifting and unloading platform to move to the ground;

[0030] (5) The agricultural machinery on the ground is driven onto the boarding platform, and the vertical drive mechanism drives the boarding platform to rise to a position flush with or higher than the loading platform;

[0031] (6) Agricultural machinery moves from the boarding platform to the loading platform;

[0032] (7) The vertical drive mechanism drives the boarding plate to descend to the lowest position;

[0033] (8) The retracting and extending mechanism drives the lifting and unloading platform to the specified height, and the rotating drive mechanism drives the loading platform to rotate in the opposite direction to 90 degrees, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and unloading platform is placed on the leveling platform;

[0034] (9) The travel drive device drives the frame to move on the track, and the transport vehicle goes to the work site where agricultural machinery is needed;

[0035] (10) After the transport vehicle arrives at the work site, the agricultural machinery needs to be unloaded. By extending and retracting the leveling legs, the leveling platform is driven to swing along the hinged position at the front end to adjust the leveling platform to a horizontal position;

[0036] (11) The rotary drive mechanism drives the loading platform to rotate to 90° so that the length direction of the loading platform and the length direction of the leveling platform are perpendicular to each other;

[0037] (12) The retractable mechanism drives the lifting and unloading platform to move to the ground;

[0038] (13) The vertical drive mechanism drives the boarding plate to rise to a position flush with or higher than the loading platform;

[0039] (14) The agricultural machinery moves from the loading platform to the boarding plate, the vertical drive mechanism drives the boarding plate down to the ground, and the agricultural machinery moves from the boarding plate to the ground;

[0040] (15) The retracting and extending mechanism drives the lifting and unloading platform to the specified height, and then the rotary driving mechanism drives the loading platform to rotate in the opposite direction to 90 degrees, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and unloading platform is placed on the leveling platform.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The rail transporter suitable for loading, unloading and transferring agricultural machinery in the present invention can travel on the rails by arranging a transport vehicle, and the loading platform of the transport vehicle can be loaded with agricultural machinery, thereby realizing the transportation of agricultural machinery.

[0043] 2. The rail conveyor suitable for loading, unloading and transferring agricultural machinery in the present invention can realize the loading and unloading of agricultural machinery without manual handling by setting a retracting and extending mechanism and a lifting and unloading platform, so that agricultural machinery of larger size and mass can be loaded and unloaded; in conjunction with the walking drive device, the transport vehicle can travel on the track, thereby transferring the agricultural machinery to different planting planes, thereby realizing the transfer of agricultural machinery on mountains and hills, facilitating the development of agriculture.

[0044] 3. The rail conveyor suitable for loading, unloading and transferring agricultural machinery in the present invention has the advantages of simple structure, easy operation and reliable performance.

[0045] 4. The rail conveyor suitable for loading, unloading and transferring agricultural machinery in the present invention is equipped with a leveling platform. The leveling legs are extended and retracted to achieve automatic leveling of the leveling platform, thereby being adaptable to loading and unloading on slopes. It has high flexibility and is more convenient for loading and unloading agricultural machinery. At the same time, the tendency of agricultural machinery to move can be reduced during the walking process.

[0046] 5. The rail conveyor suitable for loading, unloading and transferring agricultural machinery in the present invention has a support frame of the lifting and unloading platform located on the ground during operation, that is, the support point of the force when lifting the agricultural machinery is located on the ground. The lifting and lowering of the agricultural machinery will not generate additional torque on the frame, which significantly reduces the load on the frame and increases the life of the transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1-Figure 2 This is a structural diagram of a rail conveyor suitable for loading, unloading and transferring agricultural machinery in the present invention, wherein: Figure 1 A three-dimensional diagram showing loading and unloading of agricultural machinery. Figure 2 A perspective view showing the transport of agricultural machinery.

[0048] Figure 3 The rail conveyor in the present invention is a three-dimensional diagram omitting some structures.

[0049] Figure 4-Figure 6 This is a schematic diagram of the installation of the track and transport vehicle in the present invention, wherein: Figure 4 For the main view, Figure 5-Figure 6 It is a stereogram with different viewing angles.

[0050] Figure 7 Schematic diagram of the three-dimensional structure of the lifting and unloading platform in the present invention, wherein the vertical guide rails of the lifting and unloading platform are in a folded state.

[0051] Figure 8 for Figure 7 A partial enlarged view of the middle A.

[0052] Figure 9It is a schematic diagram of the three-dimensional structure of the lifting and unloading platform in the present invention, and the vertical guide rails of the lifting and unloading platform are in the open state.

[0053] Figure 10 Schematic diagram of the installation of the leveling platform and the rotary drive mechanism in the present invention.

[0054] Figure 11 It is a schematic diagram of the three-dimensional structure of the rotary drive mechanism in the present invention. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0056] Example 1

[0057] See also Figures 1-6 This embodiment discloses a rail conveyor suitable for loading, unloading and transferring agricultural machinery, including a rail 1 and a transport vehicle arranged on the rail 1 for transporting agricultural machinery; the transport vehicle includes a frame 24, a travel drive device 5, a leveling device, a loading platform 8 and a transfer device.

[0058] See also Figures 1-6 The frame 24 is slidably arranged on the track 1 , and the travel drive device 5 is used to drive the frame 24 to travel on the track 1 .

[0059] See also Figures 1-6 The leveling device includes a leveling platform 7 and a leveling leg 11 with a telescopic function, wherein the front end of the leveling platform 7 is hinged to the frame 24; the leveling leg 11 is arranged between the leveling platform 7 and the frame 24; one end of the leveling leg 11 is hinged to the middle or rear end of the leveling platform 7, and the other end is hinged to the rear end of the frame 24; wherein the number of the leveling legs 11 is two, distributed on both sides of the frame 24.

[0060] See also Figures 1-6 The loading platform 8 is used to place agricultural machinery. The loading platform 8 is rotatably connected to the leveling platform 7. A rotating drive mechanism is provided between the loading platform 8 and the leveling platform 7 for driving the loading platform 8 to rotate on the leveling platform 7.

[0061] See also Figures 1-9The transfer device is used to transfer agricultural machinery on the ground to the loading platform 8 or to transfer agricultural machinery on the loading platform 8 to the ground; the transfer device includes a lifting and unloading platform 10 arranged at the rear end of the loading platform 8 and a retracting and extending mechanism 9 arranged between the loading platform 8 and the lifting and unloading platform 10 for driving the lifting and unloading platform 10 to move between the ground and the loading platform 8; wherein, the lifting and unloading platform 10 includes a support frame 12, a boarding plate 23 slidably arranged on the support frame 12, and a vertical driving mechanism for driving the boarding plate 23 to move in a vertical direction.

[0062] See also Figures 1-9 A vertical guide mechanism is provided between the boarding platform 23 and the support frame 12 to guide the boarding platform 23 on the support frame 12. The vertical guide mechanism includes vertical guide rails 17 vertically arranged on both sides of the support frame 12, and a sliding assembly provided on the boarding platform 23 and slidably connected to the vertical guide rails 17. The sliding assembly includes a guide frame 14 provided on the boarding platform 23 and a plurality of guide wheels 24 provided on the guide frame 14. The guide frame 14 moves up and down along the vertical guide rails 17 under the constraints of the plurality of guide wheels 24. The provision of the vertical guide mechanism enables the boarding platform 23 to move stably on the support frame 12, ensuring the stability of the transfer of agricultural machinery.

[0063] See also Figures 1-9The vertical guide rail 17 is a foldable vertical guide rail, and the vertical guide rail 17 includes a fixed guide rail 22 fixed on the support frame 12 and a movable folding guide rail 21 arranged at the upper end of the fixed guide rail 22; a folding drive mechanism is provided between the folding guide rail 21 and the support frame 12, and the folding drive mechanism includes a first connecting rod 18, a second connecting rod 20 and a folding hydraulic rod 19; the head end of the first connecting rod 18 is hinged to the support frame 12, the head end of the second connecting rod 20 is hinged to the upper end of the folding guide rail 21, the cylinder body of the folding hydraulic rod 19 is hinged to the support frame 12, and the telescopic rod of the folding hydraulic rod 19 is hinged together with the end of the first connecting rod 18 and the end of the second connecting rod 20. In the above structure, by providing a foldable vertical guide rail 17, the size of the vertical guide rail 17 in the height direction can be reduced, making the structure more compact; when loading agricultural machinery, the retracting mechanism 9 drives the lifting and unloading platform 10 to move from the loading platform 8 to the ground (at this time, the boarding plate 23 is at the lowest position), and the folding hydraulic rod 19 extends, driving the first connecting rod 18 and the second connecting rod 20 to swing, driving the folding guide rail 21 to swing upward until the folding guide rail 21 is collinear with the fixed guide rail 22. At this time, the folding hydraulic rod 19, the first connecting rod 18, and the second connecting rod 20 are also in the dead point position (that is, the first connecting rod 18 and the second connecting rod 20 are in a straight line), ensuring the stability of the folding guide rail 21. After loading is completed, when folding is required, the folding hydraulic rod 19 is shortened to realize the folding of the folding guide rail 21; then the agricultural machinery is driven onto the boarding plate 23, and the agricultural machinery can be lifted or lowered. When the agricultural machinery on the ground needs to be transferred to the loading platform 8 (i.e., when loading the agricultural machinery) or when the agricultural machinery on the loading platform 8 needs to be transferred to the ground (i.e., when unloading the agricultural machinery), the folding guide rail 21 and the fixed guide rail 22 are in a collinear state; when transporting the agricultural machinery, the folding guide rail 21 is in a folded state.

[0064] See also Figure 9 The folding hydraulic rod 19, the first connecting rod 18, the second connecting rod 20, and the folding guide rail 21 are on the same plane, and the purpose is to enable the folding guide rail 21 to rotate within a plane to achieve folding.

[0065] See also Figure 7-Figure 9 The fixed guide rail 22 and the folding guide rail 21 are connected by a hinge structure, so that the folding guide rail 21 can rotate around the hinge structure.

[0066] See also Figure 7-Figure 9The fixed guide rail 22 is provided with fixing plates 25 on both sides of its upper end. The space between the two fixing plates 25 forms a fixing groove. When the fixed guide rail 22 and the folding guide rail 21 are aligned, the folding guide rail 21 engages with the fixing groove. The provision of the fixing plates 25 further ensures the stability of the connection between the fixed guide rail 22 and the folding guide rail 21 when they are aligned.

[0067] See also Figure 4-Figure 9 The vertical drive mechanism includes a lifting hydraulic rod 15, a chain 13, and a sprocket 16 vertically arranged on both sides of the support frame 12. One end of the chain 13 is connected to the guide frame 14, and the other end is connected to the upper end of the support frame 12. The sprocket 16 is mounted on the telescopic rod of the lifting hydraulic rod 15 and meshes with the chain 13. In the above structure, the telescopic rod is driven upward by the lifting hydraulic rod 15, which drives the sprocket 16 upward. With the cooperation of the sprocket 16 and the chain 13, the chain 13 also moves, driving the guide wheel 24 to move upward on the vertical guide rail 17, thereby achieving the upward movement of the boarding platform 23; conversely, the downward movement of the boarding platform 23 is achieved.

[0068] See also Figures 1-6 The travel drive device 5 is located in the middle of the track 1 and includes a rack 26 arranged parallel to the track 1, a travel gear 27 mounted on the vehicle frame 24, and a hydraulic motor 6 for driving the travel gear 27. The travel gear 27 engages with the rack 26. In this structure, the track 1 can bear the load, ensuring the stable operation of the vehicle frame 24. The travel drive device 5 is located in the middle of the track 1, making it easier to drive the vehicle frame 24 along the track 1 and providing more uniform force. The hydraulic motor 6 drives the travel gear 27 to rotate, thereby changing the position of the travel gear 27 on the rack 26 and driving the vehicle frame 24.

[0069] See also Figures 1-6 The track 1 is a three-track track with three rails, and the middle rail is integrated with the rack 26.

[0070] See also Figures 1-6 and Figure 10-11 The rotary drive mechanism includes a ring gear 28 provided on the leveling platform 7, a drive gear 29 provided at the lower end of the loading platform 8, and a power source for driving the drive gear 29 to rotate; the drive gear 29 meshes with the outer side of the ring gear 28. By providing the rotary drive mechanism, the power source drives the drive gear 29 to rotate, causing the drive gear 29 to rotate along the outer side of the ring gear 28, thereby driving the loading platform 8 to rotate. The loading platform 8 can rotate left and right by an angle greater than 90 degrees each time.

[0071] See also Figure 10-11 A rotational guide mechanism is provided between the loading platform 8 and the ring gear 28. The rotational guide mechanism includes a plurality of guide rollers 30 evenly distributed along the circumference. The guide rollers 30 are engaged and connected to the inner side of the ring gear 28. The upper ends of the guide rollers 30 are fixedly connected to the lower end of the loading platform 8. The rotational guide mechanism ensures the stability of the loading platform 8.

[0072] See also Figure 10-11 The guide roller 30 is provided with a tapered groove in the circumferential direction, and the inner side of the ring gear 28 is provided with a tapered protrusion along the circumferential direction, and the tapered protrusion is matched with the tapered groove.

[0073] See also Figures 1-6 The retractable mechanism 9 is a hydraulic cylinder assembly, one end of which is hinged to the rear end of the loading platform 8, and the other end is hinged to the support frame 12. By providing a hydraulic cylinder assembly, which is similar to the hydraulic cylinder assembly of a truck tailgate, the retractable and retractable lifting and unloading platform 10 can be achieved. The retractable mechanism 9 can lift the lifting and unloading platform 10 to a certain height and place it on the leveling platform 7, which is the retracting action; it can also lower the lifting and unloading platform 10 to the ground, which is the extending action.

[0074] See also Figures 1-6 The hydraulic cylinder group includes a first retractable hydraulic cylinder 9-1 and a second retractable hydraulic cylinder 9-2 arranged on both sides of the loading platform 8. The first retractable hydraulic cylinders 9-1 on both sides are symmetrically arranged, and the second retractable hydraulic cylinders 9-2 on both sides are symmetrically arranged; one end of the first retractable hydraulic cylinder 9-1 is hinged to the rear end of the loading platform 8, and the other end is hinged to the upper end of the support frame 12; one end of the second retractable hydraulic cylinder 9-2 is hinged to the loading platform 8, and the other end is hinged to the middle part of the support frame 12. In the above structure, the retraction and extension of the lifting and unloading platform 10 is achieved by the coordinated action of two first retraction and extension hydraulic cylinders 9-1 and two second retraction and extension hydraulic cylinders 9-2; the length of the leveling platform 7 is greater than the length of the loading platform 8. When the lifting and unloading platform 10 is retracted, the support frame 12 is lifted to a certain height by the retraction mechanism 9, and then the loading platform 8 is rotated to the walking position, and then the lifting and unloading platform 10 can be placed on the extended part of the leveling platform 7; when the lifting and unloading platform 10 is placed on the ground, the opposite action is performed to place the support frame 12 on the ground.

[0075] See also Figures 1-6 The position where the second retractable hydraulic cylinder 9-2 is hinged to the loading platform 8 is located in front of the position where the first retractable hydraulic cylinder 9-1 is hinged to the loading platform 8.

[0076] See also Figures 1-6When the transport vehicle is moving, the length direction of the loading platform 8 is parallel to the direction of the track 1. When performing loading and unloading operations, the length direction of the loading platform 8 is perpendicular to the direction of the track 1.

[0077] See also Figures 1-6 The rail transport vehicle also includes a power supply system and a control system 4. The control system is an operating cabinet and includes a generator station 2 and a hydraulic station 3. These provide the necessary electricity and hydraulics for the travel drive 5, leveling device, rotation drive mechanism, retractable mechanism 9, vertical drive mechanism, and folding drive mechanism. The control system 4 is used to control and regulate these electrical and hydraulic signals. The control system 4 enables automatic control of the transport vehicle. The generator station 2 provides electricity to each component, while the hydraulic station 3 provides hydraulics to each component. The control system 4 controls the electrical and hydraulic signals, enabling operational control of the travel drive 5, leveling device, rotation drive mechanism, retractable mechanism 9, vertical drive mechanism, and folding drive mechanism.

[0078] See also Figures 1-6 The generator station 2 and the hydraulic station 3 provide the required electricity and hydraulics for the leveling legs 11, the folding hydraulic rod 19, the lifting hydraulic rod 15, the hydraulic motor 6, the power source, and the hydraulic cylinder group.

[0079] See also Figures 1-6 The power supply system and control system 4 are arranged on a power mounting frame 31, wherein the power mounting frame 31 is slidably arranged on the track 1. The power mounting frame 31 can be fixedly connected to the frame 24 or can be integrally arranged with the frame 24. The power mounting frame 31 is also provided with a travel drive device 5.

[0080] See also Figures 1-6 When transporting agricultural machinery, it is only necessary to place the lifting and unloading platform 10 to the working position by remote control, drive the agricultural machinery onto the lifting platform, then control the boarding plate 23 to be raised to a certain height, so that the agricultural machinery enters the loading platform 8, and finally fold up the lifting and unloading platform 10; perform the opposite action when unloading the agricultural machinery; in this embodiment, the manual action participation is greatly reduced, and one person can complete the operation.

[0081] See also Figures 1-6 Guardrails 32 are provided on both sides and the front end of the loading platform 8 to prevent the agricultural machinery from falling during transportation.

[0082] See also Figures 1-9 The front and rear ends of the boarding plate 23 are hinged with guide plates 33. By setting the guide plates 33, it is convenient for agricultural machinery to enter the boarding plate 23 from the ground or the loading platform 8, and move from the boarding plate 23 to the loading platform 8 or the ground.

[0083] See also Figures 1-9 The working principle of the above-mentioned rail transporter suitable for loading and unloading agricultural machinery is:

[0084] The track 1 is laid on mountains and hills. During normal driving, the length direction of the loading platform 8 is consistent with the length direction of the leveling platform 7. When agricultural machinery needs to be loaded, the transport vehicle is parked at the corresponding position. At this time, the vertical guide rails 17 of the lifting and unloading platform 10 are in a folded state. First, the leveling legs 11 are extended and retracted to drive the leveling platform 7 to swing along the hinged position at the front end, and the leveling platform 7 is adjusted to a horizontal state; then the loading platform 8 is driven to rotate to 90° by the rotary drive mechanism, so that the length direction of the loading platform 8 is perpendicular to the length direction of the leveling platform 7; the retracting mechanism 9 drives the lifting and unloading platform 10 to move from the loading platform 8 to the ground, and the boarding plate 23 is at the lowest position of the support frame 12; then the vertical guide rails 17 of the lifting and unloading platform 10 are unfolded to a workable state, and then the agricultural machinery is started Go up to the boarding plate 23, and the vertical drive mechanism drives the boarding plate 23 to rise to a position flush with or slightly higher than the loading platform 8; the agricultural machinery moves from the boarding plate 23 to the loading platform 8; then the vertical drive mechanism drives the boarding plate 23 to descend to the lowest position, and the vertical guide rail 17 of the lifting and unloading platform 10 begins to fold; the retracting mechanism 9 drives the lifting and unloading platform 10 to lift to the specified height, and then the rotary drive mechanism drives the loading platform 8 to rotate in the opposite direction to 90°, and the loading platform 8 is reset. At this time, the length direction of the loading platform 8 is parallel to the length direction of the leveling platform 7, and the lifting and unloading platform 10 is placed on the leveling platform 7, realizing the storage of the lifting and unloading platform 10; the walking drive device 5 drives the frame 24 to walk on the track 1, and the transport vehicle can go to the work place where agricultural machinery is needed (that is, different planting planes).

[0085] After the transport vehicle arrives at the work site, the agricultural machinery needs to be unloaded. First, the leveling platform 7 is driven to swing along the hinged position of the front end by extending and retracting the leveling legs 11, and the leveling platform 7 is adjusted to a horizontal level. Then, the loading platform 8 is driven to rotate to 90 degrees by the rotary drive mechanism, so that the length direction of the loading platform 8 is perpendicular to the length direction of the leveling platform 7. The retracting and unfolding mechanism 9 drives the lifting and unloading platform 10 to move from the loading platform 8 to the ground. Then, the vertical guide rails 17 of the lifting and unloading platform 10 are unfolded to a workable state, and the vertical drive mechanism drives the boarding plate 23 to rise to the same level as the loading platform 8 or slightly higher than the loading platform 8. Or slightly lower than the loading platform 8; the agricultural machinery moves from the loading platform 8 to the boarding board 23, the vertical drive mechanism drives the boarding board 23 to descend to the ground, and the agricultural machinery moves from the boarding board 23 to the ground; then the vertical guide rail 17 of the lifting and loading and unloading platform 10 begins to fold, and finally, the retracting mechanism 9 drives the lifting and loading and unloading platform 10 to lift to the specified height, and then the rotary drive mechanism drives the loading platform 8 to rotate in the opposite direction to 90°, and the loading platform 8 is reset. At this time, the length direction of the loading platform 8 is parallel to the length direction of the leveling platform 7, and the lifting and loading and unloading platform 10 is placed on the leveling platform 7, realizing the storage of the lifting and loading and unloading platform 10.

[0086] Example 2

[0087] See also Figures 1-9 This embodiment discloses a method for loading and unloading agricultural machinery on a rail conveyor. The method is applied to the rail conveyor described in Example 1 and includes the following steps:

[0088] (1) When agricultural machinery needs to be loaded, the transport vehicle should be parked at the location where the agricultural machinery needs to be loaded;

[0089] (2) By extending and retracting the leveling legs 11, the leveling platform 7 on the frame 24 is driven to swing along the hinge position at the front end, and the leveling platform 7 is adjusted to a horizontal level;

[0090] (3) The rotary drive mechanism drives the loading platform 8 to rotate to 90°, so that the length direction of the loading platform 8 and the length direction of the leveling platform 7 are perpendicular to each other;

[0091] (4) The retracting and extending mechanism 9 drives the lifting and unloading platform 10 to move to the ground;

[0092] (5) The agricultural machinery on the ground is driven onto the boarding plate 23, and the vertical drive mechanism drives the boarding plate 23 to rise to a position flush with or slightly higher than the loading platform 8;

[0093] (6) The agricultural machinery moves from the boarding plate 23 to the loading platform 8;

[0094] (7) The vertical drive mechanism drives the boarding plate 23 down to the lowest position;

[0095] (8) The retracting mechanism 9 drives the lifting and unloading platform 10 to a specified height, and the rotary drive mechanism drives the loading platform 8 to rotate in the opposite direction to 90 degrees, and the loading platform 8 is reset. At this time, the length direction of the loading platform 8 is parallel to the length direction of the leveling platform 7, and the lifting and unloading platform 10 is placed on the leveling platform 7;

[0096] (9) The travel drive device 5 drives the frame 24 to travel on the track 1, and the transport vehicle goes to the work site where the agricultural machinery is needed;

[0097] (10) After the transport vehicle arrives at the work site, the agricultural machinery needs to be unloaded. By extending and retracting the leveling legs 11, the leveling platform 7 is driven to swing along the hinged position at the front end, and the leveling platform 7 is adjusted to a horizontal position;

[0098] (11) The rotary drive mechanism drives the loading platform 8 to rotate to 90°, so that the length direction of the loading platform 8 and the length direction of the leveling platform 7 are perpendicular to each other;

[0099] (12) The retracting and extending mechanism 9 drives the lifting and unloading platform 10 to move to the ground;

[0100] (13) The vertical drive mechanism drives the boarding plate 23 to rise to a position flush with or slightly above the loading platform 8;

[0101] (14) The agricultural machinery moves from the loading platform 8 to the boarding plate 23, and the vertical drive mechanism drives the boarding plate 23 down to the ground, and the agricultural machinery moves from the boarding plate 23 to the ground;

[0102] (15) The retracting and unfolding mechanism 9 drives the lifting and unloading platform 10 to the specified height, and then the rotary driving mechanism drives the loading platform 8 to rotate in the opposite direction to 90°, and the loading platform 8 is reset. At this time, the length direction of the loading platform 8 is parallel to the length direction of the leveling platform 7, and the lifting and unloading platform 10 is placed on the leveling platform 7.

[0103] Preferably, before step (3), if the lifting and unloading platform 10 is placed on the leveling platform 7, it is first necessary to drive the lifting and unloading platform 10 upward through the retracting mechanism 9 so that the lifting and unloading platform 10 is separated from the leveling platform 7, and then step (3) is performed. Similarly, before step (11), if the lifting and unloading platform 10 is placed on the leveling platform 7, it is first necessary to drive the lifting and unloading platform 10 upward through the retracting mechanism 9 so that the lifting and unloading platform 10 is separated from the leveling platform 7, and then step (11) is performed.

[0104] In step (8), the retracting and unloading mechanism 9 drives the lifting and unloading platform 10 to rise to a specified height. At this time, the height of the lifting and unloading platform 10 should be higher than the height of the leveling platform 7. After the loading platform 8 is reset, the retracting and unloading mechanism 9 drives the lifting and unloading platform 10 to move downward until the lifting and unloading platform 10 is placed on the leveling platform 7. Similarly, in step (15), the retracting and unloading mechanism 9 drives the lifting and unloading platform 10 to rise to a specified height. At this time, the height of the lifting and unloading platform 10 should be higher than the height of the leveling platform 7. After the loading platform 8 is reset, the retracting and unloading mechanism 9 drives the lifting and unloading platform 10 to move downward until the lifting and unloading platform 10 is placed on the leveling platform 7.

[0105] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A rail conveyor suitable for loading, unloading and transferring agricultural machinery, characterized in that: It includes a track and a transport vehicle arranged on the track for transporting agricultural machinery; the transport vehicle includes a frame, a travel drive device, a leveling device, a loading platform and a transfer device; wherein, The frame is slidably arranged on the track, and the travel drive device is used to drive the frame to travel on the track; The leveling device includes a leveling platform and a leveling leg with a telescopic function, wherein the front end of the leveling platform is hinged to the vehicle frame; the leveling leg is arranged between the leveling platform and the vehicle frame; one end of the leveling leg is hinged to the middle or rear end of the leveling platform, and the other end is hinged to the rear end of the vehicle frame; The loading platform is used to place agricultural machinery, the loading platform is rotatably connected to the leveling platform, and a rotation driving mechanism is provided between the loading platform and the leveling platform for driving the loading platform to rotate on the leveling platform; The transfer device is used to transfer agricultural machinery on the ground to the loading platform or to transfer agricultural machinery on the loading platform to the ground; the transfer device includes a lifting and unloading platform arranged at the rear end of the loading platform and a retracting and extending mechanism arranged between the loading platform and the lifting and unloading platform for driving the lifting and unloading platform to move between the ground and the loading platform; wherein, the lifting and unloading platform includes a support frame, a boarding plate slidably arranged on the support frame, and a vertical driving mechanism for driving the boarding plate to move in the vertical direction; A vertical guide mechanism is provided between the boarding plate and the support frame for guiding the boarding plate to move on the support frame; the vertical guide mechanism includes vertical guide rails vertically arranged on both sides of the support frame and a sliding assembly provided on the boarding plate and slidably connected to the vertical guide rails; the sliding assembly includes a guide frame provided on the boarding plate and a plurality of guide wheels provided on the guide frame; the guide frame moves up and down along the vertical guide rails under the constraint of the plurality of guide wheels; The vertical drive mechanism includes a lifting hydraulic rod, a chain, and a sprocket vertically arranged on both sides of the support frame; wherein one end of the chain is connected to the guide frame, and the other end is connected to the upper end of the support frame; the sprocket is arranged on the telescopic rod of the lifting hydraulic rod, and the sprocket is engaged with the chain; The vertical guide rail is a foldable vertical guide rail, which includes a fixed guide rail fixed on the support frame and a movable folding guide rail arranged at the upper end of the fixed guide rail; a folding drive mechanism is provided between the folding guide rail and the support frame, and the folding drive mechanism includes a first connecting rod, a second connecting rod and a folding hydraulic rod; the head end of the first connecting rod is hinged to the support frame, the head end of the second connecting rod is hinged to the upper end of the folding guide rail, the cylinder body of the folding hydraulic rod is hinged to the support frame, and the telescopic rod of the folding hydraulic rod is hinged together with the end of the first connecting rod and the end of the second connecting rod.

2. The rail conveyor suitable for loading, unloading and transferring agricultural machinery according to claim 1, characterized in that: The travel drive device is arranged in the middle of the track, and the travel drive device includes a rack arranged parallel to the track, a travel gear arranged on the frame, and a hydraulic motor for driving the travel gear to rotate; The traveling gear is meshed with the rack.

3. The rail conveyor suitable for loading, unloading and transferring agricultural machinery according to claim 1, characterized in that: The rotary drive mechanism includes a ring gear arranged on the leveling platform, a driving gear arranged at the lower end of the loading platform, and a power source for driving the driving gear to rotate; the driving gear is meshed with the outer side of the ring gear.

4. The rail conveyor suitable for loading, unloading and transferring agricultural machinery according to claim 1, characterized in that: The retractable mechanism is a hydraulic cylinder group, one end of which is hinged to the rear end of the loading platform, and the other end of which is hinged to the support frame.

5. The rail conveyor suitable for loading, unloading and transferring agricultural machinery according to claim 4, characterized in that: The hydraulic cylinder group includes a first retractable hydraulic cylinder and a second retractable hydraulic cylinder arranged on both sides of the loading platform. The first retractable hydraulic cylinders on both sides are symmetrically arranged, and the second retractable hydraulic cylinders on both sides are symmetrically arranged; one end of the first retractable hydraulic cylinder is hinged to the rear end of the loading platform, and the other end is hinged to the upper end of the support frame; one end of the second retractable hydraulic cylinder is hinged to the loading platform, and the other end is hinged to the middle part of the support frame.

6. The rail conveyor suitable for loading, unloading and transferring agricultural machinery according to claim 1, characterized in that: The rail conveyor also includes a power supply system and a control system. The power supply system includes a generator station and a hydraulic station. The generator station and the hydraulic station provide the required electricity and hydraulics for the travel drive device, leveling device, rotation drive mechanism, retraction mechanism, vertical drive mechanism and folding drive mechanism; the control system is used to control and adjust the electrical and hydraulic signals.

7. A method for loading, unloading and transferring a rail conveyor suitable for loading, unloading and transferring agricultural machinery according to any one of claims 1 to 6, characterized in that: The following steps are involved: (1) When agricultural machinery needs to be loaded, the transport vehicle should be parked at the location where the agricultural machinery needs to be loaded; (2) By extending and retracting the leveling legs, the leveling platform on the frame is driven to swing along the hinge position at the front end, and the leveling platform is adjusted to a horizontal level; (3) The rotary drive mechanism drives the loading platform to rotate to 90°, so that the length direction of the loading platform and the length direction of the leveling platform are perpendicular to each other; (4) The retracting and extending mechanism drives the lifting and unloading platform to move to the ground; (5) Drive the agricultural machinery on the ground onto the boarding platform, and the vertical drive mechanism drives the boarding platform to rise to a position flush with or higher than the loading platform; (6) Agricultural machinery moves from the boarding platform to the loading platform; (7) The vertical drive mechanism drives the boarding plate down to the lowest position; (8) The retracting and extending mechanism drives the lifting and unloading platform to the specified height, and the rotating drive mechanism drives the loading platform to rotate in the opposite direction to 90 degrees, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and unloading platform is placed on the leveling platform; (9) The travel drive device drives the frame to move on the track, and the transport vehicle goes to the work site where agricultural machinery is needed; (10) After the transport vehicle arrives at the work site, the agricultural machinery needs to be unloaded. By extending and retracting the leveling legs, the leveling platform is driven to swing along the hinged position at the front end to adjust the leveling platform to a horizontal level; (11) The rotary drive mechanism drives the loading platform to rotate to 90° so that the length direction of the loading platform and the length direction of the leveling platform are perpendicular to each other; (12) The retracting and extending mechanism drives the lifting and unloading platform to move to the ground; (13) The vertical drive mechanism drives the boarding plate to rise to a position flush with or higher than the loading platform; (14) The agricultural machinery moves from the loading platform to the boarding plate, the vertical drive mechanism drives the boarding plate down to the ground, and the agricultural machinery moves from the boarding plate to the ground; (15) The retracting and extending mechanism drives the lifting and unloading platform to the specified height, and then the rotary drive mechanism drives the loading platform to rotate in the opposite direction to 90 degrees, and the loading platform is reset. At this time, the length direction of the loading platform is parallel to the length direction of the leveling platform, and the lifting and unloading platform is placed on the leveling platform.

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