Steering control device and control method for a high-horsepower tractor

Abstract

The invention mainly discloses a steering control device and control method of a high-horsepower tractor. The steering control device comprises a tractor frame, a steering wheel, a steering column, a steering pull rod, a steering device, a power assisting device and a control unit. The steering wheel is connected with the steering pull rod through the steering column. The steering device and the power assisting device are connected with the steering pull rod and the control unit. The steering column is composed of a first fixed rod, a movably air cylinder, an angle regulating mechanism and a second fixed rod. The steering pull rod is composed of a steering sleeve, a first pull rod body and a second pull rod body. The steering device is slidably connected to the steering sleeve. A bottom plate is arranged below the steering sleeve. A pushing air cylinder connected with the steering sleeve is arranged on the bottom plate. The control method comprises the steps of adjustment of the steering wheel position, detection of the twist angle of the steering wheel, detection of the tractor speed, steering control, power assisting control and deviation control. The steering control device is compact and simple in structure, the steering wheel is adjustable, the steering control device can adapt to drivers with various individual differences, control is convenient, driving is easier, operation is stable, and the precision and actuating efficiency are high.

Description

technical field [0001] The invention relates to a steering control device and a control method of a high-horsepower tractor. Background technique [0002] In the prior art, the steering control device of a traditional high-horsepower tractor mainly includes two parts, a rack and pinion steering structure and a hydraulic system. The working principle is that the hydraulic pump (driven by the engine belt) provides oil pressure to push the piston, and then generates auxiliary force to push the steering rod to assist the steering of the wheels. , the valve body remains in place, the oil pressure on both sides of the piston is the same, and it is in a balanced state. When the steering wheel is turned, the steering control valve will be opened or closed accordingly, and the oil on one side will directly flow back to the oil storage tank without passing through the hydraulic cylinder, and the oil on the other side will continue to be injected into the hydraulic cylinder, so that t...

AI Technical Summary

Problems solved by technology

However, this kind of structure is more complex, troublesome to maintain, more fuel-intensive, higher cost, and the strength of the auxiliary force cannot be adjusted.

Generally, the position of the steering wheel in the cab is fixed and cannot be adjusted, and related components cannot be disassembled, resulting in high maintenance costs; and because different users have different heights and driving habits, they have different grasps of the steering wheel. When driving the same tractor, there will be Different feelings, if the steering wheel of the tractor cannot be coordinated with the driver, it will bring discomfort to the driver, and the driver who cannot adapt to individual differences will bring inconvenience to the driver, affect driving, and cause certain safety hazards and traffic accidents

Images