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Steering control system of tractor

A steering control and tractor technology, applied in the field of tractors, can solve the problems of switching to manual driving state and tractor not being able to

Inactive Publication Date: 2017-02-08
LOVOL HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to provide a tractor steering control system, which can solve the technical problem that the existing tractor cannot be directly switched from the automatic driving state to the manual driving state, and realize the operation of the steering wheel by the operator. Automatic release of control of the electronically controlled steering device when turning

Method used

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  • Steering control system of tractor
  • Steering control system of tractor

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Embodiment Construction

[0023] The technical solution will be further elaborated below in conjunction with the accompanying drawings.

[0024] combine figure 1 and figure 2 Commonly shown, a tractor steering control system includes a steering cylinder 2, and the steering cylinder 2 has two working chambers. The hydraulic steering gear 1 has an oil inlet, an oil return port and two working oil ports and has a left-turn working position, a right-turn working position and an intermediate position. The two working oil ports of the hydraulic steering gear 1 and the steering cylinder 2 The two working chambers communicate with each other, and the oil inlet port of the hydraulic steering gear 1 communicates with the oil return port in the middle position state.

[0025] The electronically controlled steering device 3 includes a valve element that is controlled by the electric signal sent by the navigation controller to change the direction and flow of hydraulic oil accordingly. The valve element has an o...

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Abstract

The invention discloses a steering control system of a tractor, comprising a steering oil cylinder, wherein two working ports of a hydraulic steering gear are respectively communicated with two working cavities of the steering oil cylinder; an electric control steering device comprises a valve element which is controlled by electric signals sent from a navigation controller to cause the direction and flow rate of hydraulic oil to change correspondingly, and two working ports of the valve element are respectively communicated with the two working cavities of the steering oil cylinder; the steering oil pump is respectively communicated with an oil inlet of the hydraulic steering gear and an oil inlet of the valve element; the oil circuit through which the oil inlet of the hydraulic steering gear is communicated with the steering oil pump is connected with a pressure sensor in series, and the pressure sensor is electrically connected with the navigation controller; and an oil return resistance device is arranged on an oil return branch connected with an oil return port of the valve element. The system can automatically release the control of the electric control steering device when the operating personnel operate a steering wheel for steering.

Description

technical field [0001] The invention relates to the technical field of tractors, in particular to a tractor steering control system. Background technique [0002] Tractors are indispensable mechanical equipment in agricultural production, and can be used for plowing, sowing, fertilizing, transportation, etc. The tractor is mainly composed of a driving system, a working device system, and a steering system. The steering system is mainly driven by hydraulic pressure and consists of steering wheel, steering column, steering oil pump, steering gear, steering cylinder, steering oil pipe, steering bridge and tires. When not turning, the hydraulic oil of the steering oil pump flows back to the oil tank through the middle position of the steering gear; The branch road flows into the steering oil cylinder, and then drives the steering axle and tires, so that the tractor can adjust the driving direction according to needs. [0003] In order to reduce the labor intensity of operator...

Claims

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Application Information

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IPC IPC(8): B62D5/06B62D5/08
CPCB62D5/06B62D5/063B62D5/08
Inventor 李天富王进杨述庆李宏林李辉刘召栋谭洪洋杨垒范道平
Owner LOVOL HEAVY IND
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