Wheel-side motor walking driving structure of cotton picker

Abstract

A wheel-side motor walking driving structure of a cotton picker comprises an engine, a main oil pump, a connecting pipe, six three-way connectors, four hydraulic motors and a driving axle, the connecting pipe comprises two branch pipes, two main pipes and two annular pipelines, and an oil outlet and an oil return opening of the main oil pump sequentially pass through the branch pipes and the three-way connectors. The front wheels and the rear wheels are communicated with the middles of the two main pipes respectively, annular pipelines are arranged between the front wheels and between the rear wheels, the drive axle on each wheel is communicated with a hydraulic motor, and the hydraulic motors are communicated in the annular pipelines. The annular pipeline and the hydraulic motor are arranged near each wheel, the drive axles correspondingly connected with the four wheels are driven respectively, a gearbox, a side reducer and a drive rear axle are omitted, a low-speed large-torque motor direct drive scheme is adopted, power drive is more accurate, the drive structure is simple and convenient to design, self maintenance is facilitated, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cotton pickers, in particular to a wheel-side motor travel drive structure for cotton pickers. Background Art

[0002] Cotton pickers are important modern agricultural machinery. Their design and functions directly affect the efficiency and cost of cotton picking. The travel drive structure of cotton pickers is one of its core parts, which determines the mobility and stability of the machinery. The wheel-side motor travel drive structure refers to the motor installed on the side of the cotton picker wheel directly driving the wheel to rotate. This structure usually uses a hydraulic system to achieve power transmission and control. This structural design improves the load capacity of the cotton picker's drive axle and enables the harvesting machinery to develop towards heavy-duty and large-scale.

[0003] The existing six-row cotton picker travel drive relies on the motor with gearbox, and the gearbox outputs to the wheel side to reduce speed. The parking brake, differential lock, and travel gear are all controlled by the gearbox valve block to engage and disengage the internal clutch of the gearbox. The rear axle is driven by the motor to reduce speed in the first stage and drive in the second stage. The existing technology requires the configuration of front and rear travel motors, gearboxes, side reduction, and drive rear axles. Multiple components and multi-stage transmission make the power drive not precise enough. Due to the high cost of large-scale mold opening and manufacturing, fault diagnosis and maintenance are difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a cotton picker wheel-side motor travel drive structure to solve the deficiencies of the above-mentioned prior art. The technical problem to be solved by the utility model is: to simplify the existing drive structure for easy maintenance and to make the power drive of the six-row cotton picker more precise.

[0005] A cotton picker wheel-side motor travel drive structure comprises an engine, a main oil pump, a connecting pipe, six three-way joints, four hydraulic motors and a drive axle, wherein the connecting pipe comprises two branch pipes, two main pipes and two annular pipes, the output shaft of the engine is connected to the main oil pump, the oil outlet and the oil return port of the main oil pump are respectively connected to the middle of the two main pipes through the branch pipes and the three-way joints, annular pipes are provided between the front wheels and between the rear wheels, the drive axle on each wheel is connected to a hydraulic motor, the hydraulic motor is connected to the annular pipe, the annular pipe between the front wheels is connected to one end of the two main pipes through the three-way joint, and the annular pipe between the rear wheels is connected to the other end of the two main pipes through the three-way joint.

[0006] Preferably, the four hydraulic motors are all high-torque radial piston motors.

[0007] Preferably, the hydraulic motor connected to the drive axle of the front wheels is provided with a parking brake, and the hydraulic motor connected to the drive axle of the rear wheels is provided with a drum brake.

[0008] Preferably, the driving of the hydraulic motor relies on high-pressure oil provided by a main oil pump inside the cotton picker.

[0009] Beneficial effects of the utility model:

[0010] The utility model arranges an annular pipeline and a hydraulic motor near each wheel to drive the drive axles connected to the four wheels respectively, eliminates the gearbox, side reduction and rear axle reduction, and adopts a low-speed and high-torque motor direct drive solution. The layout is more flexible, the function inheritance of the original structure is gradually reduced, the power drive is more accurate, the drive structure is simply designed, which is conducive to its own maintenance and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the structure of the wheel-side motor travel drive structure of the cotton picker.

[0012] In the figure, 1, engine, 2, main oil pump, 3, three-way joint, 4, hydraulic motor, 5, drive axle, 6, branch pipe, 7, main pipe, 8, ring pipe, 9, front wheel, 10, rear wheel. DETAILED DESCRIPTION

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0015] Figure 1 The present invention shows a wheel-side motor travel drive structure of a cotton picker, which includes an engine 1, a main oil pump 2, a connecting pipe, six three-way joints 3, four hydraulic motors 4 and a driving axle 5. The output shaft of the engine 1 is connected to the main oil pump 2. When the engine rotates, the main oil pump 2 is driven to work, converting mechanical energy into pressure energy of hydraulic oil.

[0016] The connecting pipe is designed as follows: the connecting pipe includes two branch pipes 6, two main pipes 7 and two annular pipes 8. The oil outlet and the oil return port of the main oil pump 2 are respectively connected to the middle of the two main pipes 7 through the branch pipes 6 and the three-way joint 3 in turn. Annular pipes 8 are provided between the front wheels 9 and between the rear wheels 10. The driving axle 5 on each wheel is connected to a hydraulic motor 4, and the hydraulic motor 4 is connected to the annular pipe 8. The annular pipe 8 between the front wheels 9 is connected to one end of the two main pipes 7 through the three-way joint 3, and the annular pipe 8 between the rear wheels 10 is connected to the other end of the two main pipes 7 through the three-way joint 3. Therefore, the main oil pump 2 is connected to the hydraulic motor 3 through the above pipeline, and the pressurized oil flows out from the oil outlet of the main oil pump 2, passes through one of the branch pipes 6 and the main pipe 7, and is divided into the corresponding annular pipes 8 between the front wheels and the rear wheels through the three-way joint 3 in the middle of the main pipe 7, and then flows back from the respective annular pipes 8 to another main pipe 7 and branch pipe 6 in turn, and finally flows back to the oil return port of the main oil pump 2. The pressure oil in the main oil pump 2 drives the hydraulic motor 4 to rotate, thereby driving the drive axle 5 to rotate, and finally drives the wheels to rotate, realizing the movement of the cotton picker, and converting the pressure energy into mechanical energy.

[0017] When the vehicle needs to shift gears, the vehicle speed and driving force can be adjusted by increasing or decreasing the displacement of the main oil pump 2 and the displacement of the hydraulic motor 4 installed on the front wheel 9 and the rear wheel 10. By arranging annular pipelines and hydraulic motors near each wheel, driving the drive axles connected to the four wheels respectively, eliminating the gearbox, side reduction and rear axle reduction, and adopting a low-speed high-torque motor direct drive solution, the layout is more flexible, the function inheritance of the original structure is gradually reduced, the power drive is more accurate, the drive structure design is simple, and it is conducive to reducing costs and maintenance.

[0018] As an embodiment of the utility model, the four hydraulic motors 4 are all selected as large-torque radial piston motors, so as to adapt to various walking and climbing conditions of the cotton picker.

[0019] As another embodiment of the utility model, the hydraulic motor 4 of the drive axle 5 connected to the front wheel 9 is equipped with a parking brake, and the hydraulic motor 4 of the drive axle 5 connected to the rear wheel 10 is equipped with a drum brake. The front and rear wheels respectively use parking brakes and drum brakes to effectively control the wheels from stopping.

[0020] The drive of the hydraulic motor 4 relies on the high-pressure oil provided by the main oil pump 2 inside the cotton picker. The high-pressure oil effectively drives the hydraulic motor beside the wheel to rotate, thereby driving the wheel to rotate and realize the movement of the cotton picker.

[0021] Working principle of this utility model:

[0022] like Figure 1The hydraulic motors 4 on the front wheels 9 and the rear wheels 10 all use high-torque radial piston motors. The four hydraulic motors 4 directly drive the wheels on the sides to rotate. The settings can be switched between maximum displacement and half displacement respectively. The speed is changed by changing the displacement, thereby combining different gear speeds. There are 3 speed gears in total. When the four-wheel drive motor is fully loaded in the field, the speed is 7Km / h, and the maximum climbing ability is 45.8%; when the four-wheel drive motor is fully loaded with half displacement, the speed is 15Km / h, and the maximum climbing ability is 23.7%, which meets all walking and climbing conditions of the cotton picker.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cotton picker wheel motor travel drive structure, characterized in that: The invention comprises an engine (1), a main oil pump (2), a connecting pipe, six three-way joints (3), four hydraulic motors (4) and a drive axle (5). The connecting pipe comprises two branch pipes (6), two main pipes (7) and two annular pipes (8). The output shaft of the engine (1) is connected to the main oil pump (2). The oil outlet and the oil return port of the main oil pump (2) are respectively connected to the middle of the two main pipes (7) through the branch pipe (6) and the three-way joint (3). An annular pipe (8) is provided between the front wheels (9) and between the rear wheels (10). The drive axle (5) on each wheel is connected to a hydraulic motor (4). The hydraulic motor (4) is connected to the annular pipe (8). The annular pipe (8) between the front wheels (9) is connected to one end of the two main pipes (7) through the three-way joint (3). The annular pipe (8) between the rear wheels (10) is connected to the other end of the two main pipes (7) through the three-way joint (3).

2. A cotton picker wheel motor travel drive structure according to claim 1, characterized in that: The four hydraulic motors (4) are all high-torque radial piston motors.

3. The wheel motor travel drive structure of a cotton picker according to claim 1, characterized in that: The hydraulic motor (4) of the drive axle (5) connected to the front wheel (9) is provided with a parking brake, and the hydraulic motor (4) of the drive axle (5) connected to the rear wheel (10) is provided with a drum brake.

4. The wheel motor travel drive structure of a cotton picker according to claim 1, characterized in that: The driving of the hydraulic motor (4) relies on the high-pressure oil provided by the main oil pump (2) inside the cotton picker.

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