A hydraulic chassis mechanism

Abstract

This application discloses a hydraulic chassis mechanism, including a main frame. The front and rear ends of the main frame are respectively equipped with left and right front motor wheel sets and rear motor wheel sets. The front motor wheel sets are hinged to the main frame along the vertical axis, and a steering component is provided between the main frame and the front motor wheel sets. The rear motor wheel sets are hinged to the main frame along the horizontal axis, and a shock-absorbing component is provided between the main frame and the rear motor wheel sets. A hydraulic supply component is provided on the main frame, and the hydraulic supply component is connected to the front motor wheel sets, rear motor wheel sets, and steering component. The advantages of this application are: the chassis rear end is equipped with a universal structural interface and a hydraulic power source; by changing different towing devices after chassis replacement, modular application of agricultural machinery equipment can be provided, realizing power traction for different operating equipment; the use of hydraulic power transmission greatly simplifies the transmission structure; the hydraulic system can also improve low-speed, high-torque output, providing greater extrication force for machinery stuck in farmland and improving its passability.

Description

Technical Field

[0001] This application belongs to the field of agricultural machinery technology, specifically relating to a hydraulic chassis mechanism. Background Technology

[0002] With the further advancement of agricultural modernization, agricultural machinery is now widely used in agricultural production. This includes rice transplanters, seeders, fertilizer applicators, and pesticide sprayers. These existing agricultural machines are mostly independent pieces of equipment, with little overlap in their usage periods, resulting in significant amounts of idle equipment. This is primarily because most agricultural machinery currently uses traditional mechanical transmissions. While this method is praised for its precision and mature technology, its complex and relatively fixed transmission mechanism limits the development of multi-functional and modular agricultural machinery chassis. Furthermore, the need for a gearbox with shifting capabilities during transmission leads to complex structures, high maintenance costs, and low torque output at low speeds, making it unable to overcome obstacles in challenging farmland conditions. Utility Model Content

[0003] The purpose of this application is to provide a hydraulic chassis mechanism that solves the problem of complex existing agricultural machinery chassis structures and the inability to develop modularly.

[0004] The objective of this application is achieved through the following technical solution: A hydraulic chassis mechanism includes a main frame, with a front motor wheel assembly and a rear motor wheel assembly located at the front and rear ends of the main frame, respectively. The front motor wheel assembly is hinged to the main frame along the vertical axis, and a steering assembly is provided between the main frame and the front motor wheel assembly. The rear motor wheel assembly is hinged to the main frame along the horizontal axis, and a shock absorption assembly is provided between the main frame and the rear motor wheel assembly. A hydraulic supply assembly is provided on the main frame, and the hydraulic supply assembly is connected to the front motor wheel assembly, the rear motor wheel assembly, and the steering assembly, respectively.

[0005] Furthermore, the main frame includes at least two frame longitudinal bars, a front mounting plate is connected between the front ends of the frame longitudinal bars, a hydraulic supply assembly is mounted on the front mounting plate, a wheel assembly mounting rod is provided at the front end of the front mounting plate or the frame longitudinal bars, the wheel assembly mounting rod is hinged to the front motor wheel assembly, a frame crossbar is connected between the middle parts of the frame longitudinal bars, a wheel assembly mounting shaft is connected to the rear end of the frame longitudinal bars, the wheel assembly mounting shaft is hinged to the rear motor wheel assembly, a rear mounting plate is connected to the rear end of the frame longitudinal bars, and a universal mounting interface is provided on the rear mounting plate.

[0006] Furthermore, the hydraulic supply assembly includes a fuel engine mounted on the main frame. The fuel engine is connected to a hydraulic pump assembly, which is connected to the front motor wheel assembly, the rear motor wheel assembly, and the steering assembly.

[0007] Furthermore, the front motor wheel assembly includes a front motor support leg, the main frame is hinged to the front motor support leg via a vertical steering pin, the front motor support leg is equipped with a front hydraulic motor, and the front hydraulic motor is equipped with a front wheel. The rear motor wheel assembly includes a rear motor support leg, the main frame is hinged to the rear motor support leg via a horizontal lifting pin, the rear motor support leg is equipped with a rear hydraulic motor, and the rear hydraulic motor is equipped with a rear wheel.

[0008] Furthermore, the front motor outrigger is detachably connected to the front hydraulic motor, and the rear motor outrigger is detachably connected to the rear hydraulic motor.

[0009] Furthermore, the front hydraulic motor is detachably connected to the front wheel, and the rear hydraulic motor is detachably connected to the rear wheel.

[0010] Furthermore, the rear hydraulic motor is equipped with a rear motor encoder.

[0011] Furthermore, the shock absorption assembly includes a shock absorption spring, which is vertically positioned between the main frame and the rear motor support leg.

[0012] Furthermore, the steering assembly includes a steering cylinder mounted on the main frame. The extension rod of the steering cylinder is hinged to the steering linkage via a connecting rod pin, and the steering linkage is hinged to the front motor wheel assembly via a connecting rod pin.

[0013] Furthermore, the steering cylinder is a bidirectional telescopic cylinder.

[0014] The beneficial effects of this application are: (1) The rear of the chassis is equipped with a universal structural interface and a hydraulic power source. By replacing the different towing devices after the chassis (rice transplanter transplanting device, seeder sowing device, fertilizer applicator fertilizing device, pesticide sprayer spraying device), the modular application of agricultural machinery equipment can be provided, and the power traction of different operating equipment can be realized, which greatly reduces the types of equipment and the idle rate.

[0015] (2) The use of hydraulic power transmission greatly simplifies the transmission structure. The hydraulic system can also improve the output of low speed and high torque, providing greater extrication force for machinery stuck in farmland and improving its passability.

[0016] (3) By reserving a hydraulic power source, power can be provided to the towed device. The hydraulic power can achieve linear motion through the hydraulic cylinder and rotational motion through the motor. It is not limited by traditional mechanical transmission, which is more convenient and provides better support for the multi-functionality of agricultural machinery power chassis.

[0017] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of this application.

[0019] Figure 2 This is the main view of the structure of this application.

[0020] Figure 3 This is a bottom view of the structure of this application.

[0021] In the diagram: 1-Main frame, 2-Fuel engine, 3-Hydraulic pump unit, 4-Front motor outrigger, 5-Steering pin, 6-Front hydraulic motor, 7-Front wheel, 8-Rear motor outrigger, 9-Lifting pin, 10-Shock absorber spring, 11-Rear hydraulic motor, 12-Rear wheel, 13-Steering cylinder, 14-Steering link, 15-Linkage pin, 16-Radiator. Detailed Implementation

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

[0023] refer to Figures 1-3 As shown, a hydraulic chassis mechanism includes a main frame 1, a hydraulic supply assembly, a front motor wheel assembly, a rear motor wheel assembly, a steering assembly, and a shock absorption assembly.

[0024] The main frame 1 serves as the main structural framework, enabling the installation and fixation of other mechanical components. The front and rear ends of the main frame 1 are respectively equipped with left and right front motor wheel sets and rear motor wheel sets. All motor wheel sets are hydraulically driven drive wheels capable of independent self-movement, and the chassis moves through the four motor wheel sets.

[0025] The front motor wheel assembly is hinged to the main frame 1 along the vertical axis. A steering component is provided between the main frame 1 and the front motor wheel assembly, that is, the front motor wheel assembly can swing horizontally relative to the main frame 1 to adjust the horizontal orientation. The angle of the front motor wheel assembly is controlled and driven by the steering component to achieve steering and turning.

[0026] The rear motor wheel assembly is hinged to the main frame 1 along the horizontal axis. A shock-absorbing component is provided between the main frame 1 and the rear motor wheel assembly, so that the rear motor wheel assembly can swing up and down relative to the main frame 1 to adjust the horizontal height, meet the undulation requirements of the rear motor wheel assembly under different terrains, and then the shock-absorbing component dampens and buffers the undulation. At the same time, the shock-absorbing component has a suspension function.

[0027] The main frame 1 is equipped with a hydraulic supply component, which is connected to the front motor wheel set, the rear motor wheel set and the steering component through pipelines. The hydraulic supply component is a hydraulic power source that provides power to the motor wheel set and the steering component. At the same time, the hydraulic supply component also has a reserved hydraulic interface for the trailer device, which also provides power to the trailer device through pipelines.

[0028] The main frame 1 includes at least two longitudinal frame members, preferably two rectangular tubes arranged symmetrically on the left and right. A front mounting plate is welded to the front ends of the longitudinal frame members, and a crossbar is welded to the middle of the longitudinal frame members. The longitudinal frame members, the front mounting plate, and the crossbar together form a fixed rectangular frame structure. The hydraulic supply assembly is fixedly mounted on the front mounting plate.

[0029] A wheel assembly mounting rod is welded to the outer front end of the front mounting plate or the longitudinal member of the frame. Preferably, the wheel assembly mounting rod is a transverse rectangular tube, and it is hinged to the front motor wheel assembly. A wheel assembly mounting shaft is connected to the rear end of the longitudinal member of the frame. Preferably, the wheel assembly mounting shaft is a transverse round shaft, and it is hinged to the rear motor wheel assembly.

[0030] A radiator support is welded to the upper rear end of the longitudinal strut of the frame, and the radiators 16 are fixed between the left and right radiator supports by bolts. A longitudinal rear mounting plate is welded to the lower rear end of the longitudinal strut of the frame. The rear mounting plate is equipped with a universal mounting interface to realize the installation and fixing of various towing devices.

[0031] The hydraulic supply assembly includes a fuel engine 2, a hydraulic pump assembly 3, and a radiator 16. The fuel engine 2 is bolted to the front mounting plate of the main frame 1; preferably, the fuel engine 2 is a gasoline engine. The fuel engine 2 is connected to the hydraulic pump assembly 3, which is connected to the front motor wheel assembly, the rear motor wheel assembly, the steering assembly, and the radiator 16. That is, the fuel engine 2 provides torque to the hydraulic pump assembly 3, which in turn provides high-pressure fluid to the other hydraulic components, and the radiator 16 cools the high-temperature fluid.

[0032] The front motor wheel assembly includes a front motor support leg 4, a steering pin 5, a front hydraulic motor 6, and a front wheel 7. The main frame 1 is hinged to the front motor support leg 4 via the vertical steering pin 5, enabling the front motor support leg 4 to swing horizontally. The front motor support leg 4 is equipped with a front hydraulic motor 6, and the front hydraulic motor 6 is equipped with a front wheel 7. When the front motor support leg 4 swings horizontally, it drives the front hydraulic motor 6 and the front wheel 7 to swing synchronously, completing the steering function. At the same time, the front hydraulic motor 6, driven by high-pressure fluid, can drive the front wheel 7 to rotate and roll, achieving self-propelled movement.

[0033] The rear motor wheel assembly includes a rear motor support leg 8, a lifting pin 9, a rear hydraulic motor 11, and a rear wheel 12. The main frame 1 is hinged to the rear motor support leg 8 via the horizontal lifting pin 9, enabling the rear motor support leg 8 to swing and rise in response to different terrains. The shock absorption assembly includes a shock-absorbing spring 10, which is vertically positioned between the main frame 1 and the rear motor support leg 8 to dampen and cushion the undulating motion, and also serves as a suspension system.

[0034] A rear hydraulic motor 11 is mounted on the rear motor outrigger 8, and a rear wheel 12 is mounted on the rear hydraulic motor 11. Driven by high-pressure fluid, the rear hydraulic motor 11 can drive the rear wheel 12 to rotate and roll, thus achieving self-propelled movement. A rear motor encoder is mounted on the rear hydraulic motor 11 to monitor the travel speed of the chassis, thereby controlling the operating frequency of the rear towing device (e.g., controlling the transplanting speed of the rice transplanter tail tray to ensure the transplanting interval).

[0035] The front motor outrigger 4 is detachably connected to the front hydraulic motor 6, and the rear motor outrigger 8 is detachably connected to the rear hydraulic motor 11. The front hydraulic motor 6 is detachably connected to the front wheel 7, and the rear hydraulic motor 11 is detachably connected to the rear wheel 12. This detachable connection facilitates maintenance or replacement of the motors and wheels.

[0036] The steering assembly includes a steering cylinder 13, which is fixed to the front mounting plate of the main frame 1 by screws. The extension rod of the steering cylinder 13 is hinged to the steering linkage 14 via a connecting rod pin 15, and the steering linkage 14 is hinged to the front motor wheel assembly via a connecting rod pin 15. The extension and retraction of the steering cylinder 13's extension rod drives the steering linkage 14 to move synchronously, thereby horizontally pushing and pulling the front motor support leg 4 of the front motor wheel assembly to adjust its horizontal orientation. The steering cylinder 13 is a bidirectional extension cylinder; when one end extends, the other end retracts to ensure synchronous left and right steering.

[0037] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydraulic chassis mechanism comprising a main frame (1), front and rear ends of the main frame (1) are respectively provided with front and rear motor wheel groups on the left and right sides, characterized in that: The front motor wheel assembly is hinged to the main frame (1) along the vertical axis. A steering component is provided between the main frame (1) and the front motor wheel assembly. The rear motor wheel assembly is hinged to the main frame (1) along the horizontal axis. A shock absorption component is provided between the main frame (1) and the rear motor wheel assembly. A hydraulic supply component is provided on the main frame (1). The hydraulic supply component is connected to the front motor wheel assembly, the rear motor wheel assembly and the steering component respectively.

2. The hydraulic chassis mechanism according to claim 1, characterized by: The main frame (1) includes at least two frame longitudinal bars. A front mounting plate is connected between the front ends of the frame longitudinal bars. A hydraulic supply assembly is located on the front mounting plate. A wheel assembly mounting rod is provided at the front end of the front mounting plate or the frame longitudinal bars. The wheel assembly mounting rod is hinged to the front motor wheel assembly. A frame crossbar is connected between the middle parts of the frame longitudinal bars. A wheel assembly mounting shaft is connected to the rear end of the frame longitudinal bars. The wheel assembly mounting shaft is hinged to the rear motor wheel assembly. A rear mounting plate is connected to the rear end of the frame longitudinal bars. A universal mounting interface is provided on the rear mounting plate.

3. The hydraulic chassis mechanism of claim 1, wherein: The hydraulic supply assembly includes a fuel engine (2), which is mounted on the main frame (1). The fuel engine (2) is connected to a hydraulic pump assembly (3), which is connected to the front motor wheel assembly, the rear motor wheel assembly and the steering assembly respectively.

4. The hydraulic chassis mechanism according to claim 1, characterized in that: The front motor wheel assembly includes a front motor support leg (4), the main frame (1) is hinged to the front motor support leg (4) through a vertical steering pin (5), the front motor support leg (4) is provided with a front hydraulic motor (6), the front hydraulic motor (6) is provided with a front wheel (7), the rear motor wheel assembly includes a rear motor support leg (8), the main frame (1) is hinged to the rear motor support leg (8) through a horizontal lifting pin (9), the rear motor support leg (8) is provided with a rear hydraulic motor (11), the rear hydraulic motor (11) is provided with a rear wheel (12).

5. The hydraulic chassis mechanism of claim 4, wherein: The front motor outrigger (4) is detachably connected to the front hydraulic motor (6), and the rear motor outrigger (8) is detachably connected to the rear hydraulic motor (11).

6. The hydraulic chassis mechanism of claim 4, wherein: The front hydraulic motor (6) is detachably connected to the front wheel (7), and the rear hydraulic motor (11) is detachably connected to the rear wheel (12).

7. The hydraulic chassis mechanism of claim 4, wherein: The rear hydraulic motor (11) is equipped with a rear motor encoder.

8. The hydraulic chassis mechanism of claim 4, wherein: The shock absorption assembly includes a shock absorption spring (10), which is vertically positioned between the main frame (1) and the rear motor support leg (8).

9. Hydraulic chassis according to claim 1 or 4, characterized in that: The steering assembly includes a steering cylinder (13), which is mounted on the main frame (1). The extension rod of the steering cylinder (13) is hinged to the steering link (14) via a connecting rod pin (15), and the steering link (14) is hinged to the front motor wheel assembly via a connecting rod pin (15).

10. The hydraulic chassis mechanism of claim 9, wherein: The steering cylinder (13) is a bidirectional telescopic cylinder.

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