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Steering control device for four-wheel transport vehicle

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

Active Publication Date: 2013-07-10
CHANGZHOU DEV & MFR CENT
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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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  • Steering control device for four-wheel transport vehicle
  • Steering control device for four-wheel transport vehicle

Examples

Experimental program
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Embodiment 1

[0012] See the accompanying drawings, the four-wheel transport vehicle steering control device proposed by the present invention includes filter 1, steering oil pump 2, monostable valve 3, overflow valve 4, steering gear 5, steering switching valve 6, direction correction valve 7, front The axle steering cylinder 8, the rear axle steering cylinder 9, and the fuel tank 10. The monostable valve 3 is a kind of throttle relief valve, when the engine speed changes, it can ensure the stability of the steering system flow. The overflow valve 4 is used for pressure protection of the entire system.

[0013] The steering switching valve 6 and the direction correction valve 7 are both 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...

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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, and is particularly suitable for application to auxiliary transport vehicles for coal mines. Background technique [0002] For the steering control of the existing auxiliary transportation four-wheel transport vehicles for coal mines, one is the mechanical or hydraulic front-wheel steering method of the modified vehicle, and the other is the central articulated steering method of the engineering vehicle. Due to the narrow tunnels in the coal mines, the front-wheel steering method cannot turn the rear wheels, and the turning radius is relatively large. The latter is due to the articulated frame of the engineering vehicle, which leads to a long vehicle length and a relatively large turning radius. This brings a lot of inconvenience to the driver in the underground mine tunnel operation. Summary of the invention [0003] The purpose of the present invention is to provide a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/08
Inventor 伍生宏汪达勇张秋根王仁群姜国华
Owner CHANGZHOU DEV & MFR CENT
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