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Four-wheel transport vehicle steering control device

A technology of steering control and transport vehicles, which is applied in the direction of fluid steering mechanism, etc., which can solve the problems of long vehicle length and large turning radius, and achieve the effect of direction correction

Active Publication Date: 2015-09-16
江西省分宜驱动桥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the coal mine underground roadway is relatively narrow, the front wheel steering method has a relatively large turning radius because the rear wheels cannot steer. The latter has a relatively long length and a relatively large turning radius due to the articulated frame of the engineering vehicle.
This has brought a lot of inconvenience to the driver working in the coal mine underground roadway

Method used

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  • Four-wheel transport vehicle steering control device
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Examples

Experimental program
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Effect test

Embodiment 1

[0012] See accompanying drawing, the four-wheel transport vehicle steering control device that the present invention proposes, comprises filter 1, steering oil pump 2, monostable valve 3, overflow valve 4, steering gear 5, steering switching valve 6, direction correction valve 7, front Axle steering oil cylinder 8, rear axle steering oil cylinder 9 and fuel tank 10. The monostable valve 3 is a throttle and overflow valve, which ensures the flow stability of the steering system when the engine speed changes. The overflow valve 4 is used for the pressure protection of the whole system.

[0013] Both the steering switching valve 6 and the direction correction valve 7 are two-position four-way valves.

[0014] The oil inlet of the steering oil pump 2 is provided with a filter 1, the oil outlet of the steering oil pump 2 is connected with the oil inlet 3-1 of the monostable valve 3, and the execution port 3-2 of the monostable valve 3 is connected to the steering gear 5 The oil i...

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Abstract

A steering control device for a four-wheel transport vehicle comprises a steering oil cylinder, a steering gear, a steering switching valve, a direction correction valve, a front axle steering oil cylinder, a rear axle steering oil cylinder and an oil tank. The steering switching valve and the direction correction valve are two-position four-way valves. When the steering switching valve is switched to a front-wheel steering state, oil ways of the rear axle steering oil cylinder are stopped; and when the steering switching valve is switched to a four-wheel steering state, the front axle steering oil cylinder and the rear axle steering oil cylinder are connected in series. When the steering gear is disposed at a middle position and four wheels are in steering states, the direction correction valve is opened, and the front axle steering oil cylinder and the rear axle steering oil cylinder are connected in parallel. The steering control device can be switched between four-wheel steering and front-wheel steering through the steering switching valve, four-wheel steering can provide a small steering radius under the same wheel base and does not affect the direction stability during normal driving, the front axle steering oil cylinder and the rear axle steering oil cylinder are connected in parallel when the vehicle deviates, strokes of pistons in the two oil cylinders are maintained consistent through self-adaption of wheels, and the direction is corrected.

Description

technical field [0001] The invention relates to a steering control device for a four-wheel transport vehicle, which is particularly suitable for use on an auxiliary transport vehicle for coal mines. Background technique [0002] The steering control of the existing coal mine auxiliary transport four-wheeled transport vehicle is that a modified vehicle adopts a mechanical or hydraulic front wheel steering mode, and the other is a central articulated steering mode that an engineering vehicle adopts. Because the coal mine underground roadway is relatively narrow, the front wheel steering method has a relatively large turning radius because the rear wheels cannot steer. The latter has a longer length and a larger turning radius due to the articulated frame of the engineering vehicle. This has brought a lot of inconvenience to the driver in coal mine tunnel operation. Contents of the invention [0003] The object of the present invention is to propose a steering control device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/08
Inventor 伍生宏汪达勇张秋根王仁群姜国华
Owner 江西省分宜驱动桥有限公司
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