Split cab structure for self-propelled crawler rotary cultivator

Abstract

The utility model discloses a detachable driver's stand structure of self -propelled caterpillar type rotary cultivator, including frame, driver's stand, walking gearbox and machine tool assembly, walking gearbox has two steering clutches and steering shift lever axle, and steering shift lever axle lower extreme stretches walking gearbox, the front end detachable connection of driver's stand and frame, driver's stand includes front support, driver's stand board and steering assembly, and the lower part detachable connection of front support is passed through connecting bolt and frame front end, steering assembly includes two steering pull rod, and the rear end of steering pull rod is downwardly bent and forms the hanging rod, is equipped with one steering arm respectively in the lower end of two steering shift lever axle, and steering arm has a hanging ring, and the hanging rod is inserted into the hanging ring from the top of hanging ring, the utility model discloses can further split frame main body to make the volume of frame main body smaller, and more regular, makes same carriage or packing box to be able to dress more caterpillar rotary cultivator to thereby reduce transportation cost greatly.

Description

Technical Field

[0001] This utility model relates to the field of tracked rotary tiller technology, and in particular to a detachable cab structure for a self-propelled tracked rotary tiller. Background Technology

[0002] With societal development, agricultural operations are increasingly mechanized, especially in large-scale farming where mechanization is highly prevalent. However, in hilly and mountainous areas, where fields are small and scattered, and roads are generally narrow and steep, high-horsepower tracked rotary tillers struggle to adapt. In managing cash crops such as vegetable greenhouses and orchards, where row spacing is limited, users typically use mini-tillers, but operating them is physically demanding. Furthermore, existing tracked rotary tillers require extensive disassembly and repair of the drive gearbox, necessitating the disassembly of numerous components.

[0003] To this end, the applicant has designed a miniaturized and easy-to-operate self-propelled tracked rotary tiller through continuous research and development. The driver's cab is located at the front of the chassis, and a seat is provided behind the driver's cab. The PTO transmission box and the travel gearbox are arranged front and rear, with the travel gearbox located under the seat and the PTO transmission box located under the engine. A multi-way control valve is also located behind the seat. For ease of operation, all control mechanisms of the rotary tiller, except for steering, are distributed on both sides of the seat, so that all operations can be completed by hand. This not only makes operation more convenient but also improves the accuracy of operation.

[0004] While the above solution miniaturizes the entire tracked rotary tiller, current tracked rotary tillers require separating the implements from the main unit during packaging and transportation. This packaging method results in low space utilization in the truck bed or container, leading to a smaller number of products that can be loaded into the container and higher transportation costs.

[0005] Therefore, how to further optimize the structure of tracked rotary tillers to reduce packaging volume and transportation costs has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to solve the problems of large body size, inconvenient packaging and high transportation cost of existing tracked rotary tillers. It provides a detachable cab structure for a self-propelled tracked rotary tiller, which can further disassemble the main body of the vehicle frame, thereby making the main body of the vehicle frame smaller and more regular in size, and allowing more tracked rotary tillers to be packed in the same carriage or packaging box, thereby significantly reducing transportation costs.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a detachable cab structure for a self-propelled tracked rotary tiller, including a frame, a cab, a travel gearbox, and a implement assembly. The implement assembly is detachably connected to the rear end of the frame via a implement frame. The travel gearbox has two steering clutches and a steering fork shaft. The two steering fork shafts are vertically arranged, with their upper ends connected to the steering forks and their lower ends extending out of the travel gearbox and rotatably connected to it. The key feature is that the cab is detachably connected to the front end of the frame.

[0008] The driver's cab includes a front support, a driver's cab plate, and a steering assembly. The front support is detachably connected to the lower part of the front end of the vehicle frame by connecting bolts. The driver's cab plate is laid on the front support and fixedly connected to the front support. The front end of the front support has a support plate in the middle, and the steering assembly is mounted on the support plate.

[0009] The steering assembly includes two steering tie rods, the rear ends of which are bent downward to form a hanger; a steering arm is provided at the lower end of each of the two steering fork shafts, one end of which is connected to the steering fork shaft and the other end has a hanger; the hanger is inserted into the hanger from above and can drive the steering fork shaft to rotate around its axis through the steering arm.

[0010] Furthermore, the steering assembly also includes a steering riser, a steering wheel, a steering shaft, a steering drive gear, and a steering driven gear. The steering riser is fixedly connected to a support plate. The upper end of the steering shaft is fixedly connected to the steering wheel, and the lower end passes through the steering riser and is connected to the steering drive gear via a universal coupling. The steering shaft is connected to the steering riser via a bearing. The steering driven gear is located behind the steering drive gear and is rotatably connected to the front bracket via a gear shaft. The steering driven gear is semi-circular, with transmission teeth on its arc-shaped side, which mesh with the steering drive gear. The center of the circle containing the steering driven gear is rotatably connected to the gear shaft. The steering tie rods are symmetrically distributed on both sides of the gear shaft, and their front ends are rotatably connected to the steering driven gear.

[0011] Furthermore, a reset mechanism is provided between the steering driven gear and the front bracket. The reset mechanism includes two reset pull rods symmetrically distributed on both sides of the gear shaft. The front end of the reset pull rod is rotatably connected to the steering driven gear. A reset bearing plate is vertically provided on the front bracket and is fixedly connected to the front bracket. The rear end of the reset pull rod passes through the reset bearing plate and forms a spring seat. A reset spring is provided between the spring seat and the reset bearing plate and is sleeved on the reset pull rod.

[0012] Furthermore, the front ends of the steering tie rod and the reset tie rod are respectively fixedly connected to a connecting fork. The front end of the connecting fork is U-shaped, and the two side plates of the connecting fork are located on the upper and lower sides of the steering driven gear disk, respectively, and are rotatably connected to the steering driven gear disk through a rotating pin.

[0013] Furthermore, the front bracket includes a support frame and two connecting frames located below the support frame. The frame has two longitudinal beams. The front ends of the two connecting frames are fixedly connected to the support frame, and the rear ends are tilted downwards and fixedly connected to the two longitudinal beams.

[0014] Furthermore, the support frame includes a front support rod, a rear support rod, and two side support rods; the support plate is located within the support frame and is fixedly connected to the middle of the front support rod; a connecting plate is provided on the lower side of the support frame, the steering drive gear is connected to a gear shaft, the gear shaft passes through the connecting plate from bottom to top and is connected to a universal coupling, and is rotatably connected to the connecting plate; the upper end of the gear disc shaft also passes through the connecting plate and is rotatably connected to the connecting plate; the reset bearing plate is fixedly connected to the rear support rod.

[0015] Furthermore, a seat is provided on the upper front side of the frame, the travel gearbox is located below the seat, an engine is located between the seat and the tool frame, and a PTO transmission box is located below the engine; the engine output shaft is connected to the input shaft of the travel gearbox and the PTO transmission box via pulleys and drive belts; a multi-way control valve is provided between the seat and the engine.

[0016] The multi-way control valve's tool upgrade lever, the travel gearbox's clutch lever, the travel gearbox's gear position lever, and the tool assembly's tool clutch lever are distributed on both sides of the seat.

[0017] Compared with the prior art, the present invention has the following advantages: In this solution, the implement assembly and the cab form a modular integrated structure and a detachable connection structure with the main body of the frame. In this way, the cab and the implement assembly can be disassembled during packaging, making the main body of the frame more regular and smaller in size. This allows more tracked rotary tillers to be loaded into the same carriage or packaging box, thereby significantly reducing transportation costs. Attached Figure Description

[0018] Figure 1 This is the assembly drawing of this utility model.

[0019] Figure 2 This is a structural diagram of the driver's cab.

[0020] Figure 3 This is a view of the drive gearbox from below.

[0021] In the diagram: 1—Frame, 2—Travel gearbox, 3—Tool assembly, 4—Steering fork shaft, 5—Front bracket, 6—Driving platform, 7—Support plate, 8—Steering tie rod, 9—Hanging rod, 10—Steering arm, 11—Steering riser, 12—Steering wheel, 13—Steering shaft, 14—Steering drive gear, 15—Steering driven gear, 16—Universal coupling, 17—Reset tie rod, 18—Reset bearing plate, 19—Reset spring, 20—Connecting fork, 21—Support frame, 22—Connecting bracket, 23—Connecting plate, 24—Seat. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example: See Figures 1 to 3A detachable cab structure for a self-propelled tracked rotary tiller includes a frame 1, a cab, a travel gearbox 2, and a implement assembly 3. The implement assembly 3 is detachably connected to the rear end of the frame 1 via a implement frame. The travel gearbox 2 has two steering clutches and two steering fork shafts 4. The two steering fork shafts 4 are vertically arranged, with their upper ends connected to steering forks and their lower ends extending out of and rotatably connected to the travel gearbox 2. In a specific implementation, a seat 24 is also provided on the upper front side of the frame 1, and the travel gearbox 2 is located below the seat 24. An engine is located between the seat 24 and the implement frame, and a PTO transmission box is located below the engine. The engine output shaft is connected to the input shafts of the travel gearbox 2 and the PTO transmission box via pulleys and a drive belt. A multi-way control valve is provided between the seat 24 and the engine to control the lifting and lowering of the implement assembly 3. For ease of driving and operation, the implement upgrade lever of the multi-way control valve, the clutch lever of the travel gearbox 2, the gear lever of the travel gearbox 2, and the implement clutch lever of the implement assembly 3 are distributed on both sides of the seat 24. With this design, all operating mechanisms except for the steering are mounted on the frame 1 and distributed on both sides of the seat 24. This means that only the steering assembly needs to be installed on the driver's cab, facilitating the modularization of the driver's cab and its disassembly and reassembly from the frame 1.

[0026] The driver's cab is detachably connected to the front end of the frame 1. The driver's cab includes a front support 5, a cab plate 6, and a steering assembly. The front support 5 is detachably connected to the lower part of the front end of the frame 1 via connecting bolts. Specifically, the front support 5 includes a support frame 21 and two connecting frames 22 located below the support frame 21. The frame 1 has two longitudinal beams. The front ends of the two connecting frames 22 are fixedly connected to the support frame 21, and their rear ends are tilted downwards and fixedly connected to the two longitudinal beams. During processing, connecting flange plates are formed at the ends where the connecting frames 22 connect to the longitudinal beams. The flange plates on the connecting frames 22 are connected to the flange plates on the longitudinal beams via connecting bolts; this makes disassembly and assembly more convenient and quick. The support frame 21 includes a front support rod, a rear support rod, and two side support rods. In implementation, the front support rod and the two side support rods are formed as a single unit, creating a U-shaped structure for better overall stability. Two mounting plates are also provided between the front and rear support rods, respectively close to the two sides of the support frame 21. The cab plate 6 is fixedly connected to the two mounting plates.

[0027] The dashboard 6 is laid on the front support 5 and fixedly connected to it. In practice, the front side of the dashboard 6 is fixedly connected to the front support rod, and the rear side extends to the rear of the support frame 21. Several connection holes are provided on the dashboard 6 to connect it to the main body of the vehicle frame 1, thus improving the overall integrity after connection. The front support 5 has a support plate 7 at its front center, and the steering assembly is mounted on this support plate 7. During processing, the support plate 7 is located inside the support frame 21 and fixedly connected to the center of the front support rod.

[0028] In this design, the steering assembly includes two steering tie rods 8, with the rear ends of the tie rods 8 bent downwards to form a hanger 9. A steering arm 10 is provided at the lower end of each of the two steering fork shafts 4. One end of each steering arm 10 is connected to the steering fork shaft 4, and the other end has a hanging ring. In implementation, the steering arm 10 is connected to the steering clutch fork shaft via a spline joint and secured together with locking bolts. The hanger 9 is inserted into the hanging ring from above. During the rotation of the steering wheel 12, the steering tie rods 8 drive the steering arm 10 to rotate, which in turn drives the steering fork shaft 4 to rotate around its axis. In implementation, a limiting plate is provided at the upper part of the hanger 9, and a limiting pin is provided at the end of the hanger 9 that passes through the hanging ring. The cooperation of the limiting plate and the limiting pin improves the connection stability between the hanger 9 and the steering arm 10, preventing it from falling off.

[0029] The steering assembly also includes a steering riser 11, a steering wheel 12, a steering shaft 13, a steering drive gear 14, and a steering driven gear 15. The steering riser 11 is fixedly connected to the support plate 7. The upper end of the steering shaft 13 is fixedly connected to the steering wheel 12, and the lower end passes through the steering riser 11 and is connected to the steering drive gear via a universal coupling 16. The steering shaft 13 is connected to the steering riser 11 via a bearing. The steering driven gear 15 is located behind the steering drive gear 14 and is rotatably connected to the front bracket 5 via a gear shaft. During assembly, a connecting plate 23 is provided on the lower side of the support frame 21, with its two ends connected to the front support rod and the rear support rod, respectively. The steering drive gear 14 is connected to a gear shaft, which passes through the connecting plate 23 from bottom to top and is connected to the universal coupling 16, and is rotatably connected to the connecting plate 23. The upper end of the gear shaft also passes through the connecting plate 23 and is rotatably connected to it. This improves the accuracy of the installation of the steering drive gear 14 and the steering driven gear. In practice, to improve the stability of the support plate 7, the end of the support plate 7 away from the front support rod is bent downwards and connected to the connecting plate 23.

[0030] The driven steering gear 15 is semi-circular, with transmission teeth on its arc-shaped side, which mesh with the steering drive gear 14. During steering wheel rotation, steering shaft 13 drives driven steering gear 15 via steering drive gear 14. Driven steering gear 15 then drives steering tie rod 8 to move back and forth, thereby rotating steering arm 10. Steering arm 10 then drives steering fork shaft 4 to rotate, controlling the steering clutch for steering. In this design, a normally open steering clutch is used. During implementation, there is a gap between the two ends of the transmission teeth and the two ends of the arc-shaped side, forming a limiting structure. The center of the circle containing driven steering gear 15 is rotatably connected to the gear shaft; this improves stability during rotation. Steering tie rod 8 is symmetrically distributed on both sides of the gear shaft, with its front end rotatably connected to driven steering gear 15.

[0031] A reset mechanism is also provided between the driven steering gear 15 and the front support 5. The reset mechanism includes two reset pull rods 17 symmetrically distributed on both sides of the gear shaft. The front end of the reset pull rod 17 is rotatably connected to the driven steering gear 15. A reset support plate 18 is vertically provided on the front support 5. The reset support plate 18 is fixedly connected to the front support 5. In practice, the reset support plate is fixedly connected to the rear support rod. The rear end of the reset pull rod 17 passes through the reset support plate and forms a spring seat. A reset spring 19 is provided between the spring seat and the reset support plate 18. The reset spring 19 is sleeved on the reset pull rod 17. By setting the reset pull rod 17 and cooperating with the reset spring 19, it is easier and faster to turn the steering wheel 12. At the same time, the reset spring 19 can improve the driving stability during straight driving.

[0032] The front ends of the steering tie rod 8 and the reset tie rod 17 are respectively fixedly connected to a connecting fork 20. The front end of the connecting fork 20 is U-shaped, and the two side plates of the connecting fork 20 are located on the upper and lower sides of the steering driven gear 15, respectively, and are rotatably connected to the steering driven gear 15 through a rotating pin; this makes installation more convenient and provides better stability.

[0033] In this design, both the implement assembly 3 and the cab form a modular integrated structure, and are detachably connected to the main body of the frame 1. This allows for easy disassembly of the cab and implement assembly 3 during packaging, resulting in a more streamlined and smaller main body of the frame 1. This enables more tracked rotary tillers to be packed in the same cargo box or packaging, significantly reducing transportation costs. Furthermore, the disassembly and assembly process is simple: just remove the bolts between the cab plate 6 and the main body of the frame 1, remove the bolts between the connecting frame 22 and the longitudinal beam, and remove the hook 9 of the steering tie rod 8 from the hanging ring. This completes the separation of the cab from the main body of the frame 1, making operation convenient and quick.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A detachable cab structure for a self-propelled tracked rotary tiller, comprising a frame, a cab, a travel gearbox, and a implement assembly, wherein the implement assembly is detachably connected to the rear end of the frame via a implement frame, and the travel gearbox has two steering clutches and a steering fork shaft, the two steering fork shafts being vertically arranged, their upper ends connected to steering forks, and their lower ends extending out of the travel gearbox and rotatably connected to the travel gearbox; characterized in that: The driver's cab is detachably connected to the front end of the vehicle frame; The driver's cab includes a front support, a driver's cab plate, and a steering assembly. The front support is detachably connected to the lower part of the front end of the vehicle frame by connecting bolts. The driver's cab plate is laid on the front support and fixedly connected to the front support. The front end of the front support has a support plate in the middle, and the steering assembly is mounted on the support plate. The steering assembly includes two steering tie rods, the rear ends of which are bent downward to form a hanger; a steering arm is provided at the lower end of each of the two steering fork shafts, one end of which is connected to the steering fork shaft and the other end has a hanger; the hanger is inserted into the hanger from above and can drive the steering fork shaft to rotate around its axis through the steering arm.

2. The detachable cab structure of the self-propelled tracked rotary tiller according to claim 1, characterized in that: The steering assembly also includes a steering riser, a steering wheel, a steering shaft, a steering drive gear, and a steering driven gear. The steering riser is fixedly connected to a support plate. The upper end of the steering shaft is fixedly connected to the steering wheel, and the lower end passes through the steering riser and is connected to the steering drive gear via a universal coupling. The steering shaft is connected to the steering riser via a bearing. The steering driven gear is located behind the steering drive gear and is rotatably connected to the front bracket via a gear shaft. The steering driven gear is semi-circular, with transmission teeth on its arc-shaped side, which mesh with the steering drive gear. The center of the circle containing the steering driven gear is rotatably connected to the gear shaft. The steering tie rods are symmetrically distributed on both sides of the gear shaft, and their front ends are rotatably connected to the steering driven gear.

3. The detachable cab structure of the self-propelled tracked rotary tiller according to claim 2, characterized in that: A reset mechanism is also provided between the steering driven gear and the front bracket. The reset mechanism includes two reset pull rods symmetrically distributed on both sides of the gear shaft. The front end of the reset pull rod is rotatably connected to the steering driven gear. A reset bearing plate is vertically provided on the front bracket. The reset bearing plate is fixedly connected to the front bracket. The rear end of the reset pull rod passes through the reset bearing plate and forms a spring seat. A reset spring is provided between the spring seat and the reset bearing plate. The reset spring is sleeved on the reset pull rod.

4. The detachable cab structure of the self-propelled tracked rotary tiller according to claim 3, characterized in that: The front ends of the steering tie rod and the reset tie rod are respectively fixedly connected to a connecting fork. The front end of the connecting fork is U-shaped, and the two side plates of the connecting fork are located on the upper and lower sides of the steering driven gear, respectively, and are rotatably connected to the steering driven gear through a rotating pin.

5. The detachable driver's cab structure of the self-propelled tracked rotary tiller according to claim 4, characterized in that: The front bracket includes a support frame and two connecting frames located below the support frame. The frame has two longitudinal beams. The front ends of the two connecting frames are fixedly connected to the support frame, and the rear ends are tilted downwards and fixedly connected to the two longitudinal beams.

6. The detachable cab structure of the self-propelled tracked rotary tiller according to claim 5, characterized in that: The support frame includes a front support rod, a rear support rod, and two side support rods; the support plate is located inside the support frame and is fixedly connected to the middle of the front support rod; a connecting plate is provided on the lower side of the support frame, the steering drive gear is connected to a gear shaft, the gear shaft passes through the connecting plate from bottom to top and is connected to a universal coupling, and is rotatably connected to the connecting plate; the upper end of the gear disc shaft also passes through the connecting plate and is rotatably connected to the connecting plate; the reset bearing plate is fixedly connected to the rear support rod.

7. The detachable cab structure of the self-propelled tracked rotary tiller according to claim 1, characterized in that: A seat is also provided on the upper front side of the frame, the travel gearbox is located below the seat, an engine is located between the seat and the tool frame, and a PTO transmission box is located below the engine; the engine output shaft is connected to the input shaft of the travel gearbox and the PTO transmission box via pulleys and drive belts; a multi-way control valve is provided between the seat and the engine; The multi-way control valve's tool upgrade lever, the travel gearbox's clutch lever, the travel gearbox's gear position lever, and the tool assembly's tool clutch lever are distributed on both sides of the seat.

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