Engineering truck support leg electrohydraulic control system, method, detection method and engineering truck

Abstract

The invention discloses an engineering truck support leg electrohydraulic control system, method, a detection method and an engineering truck. An oil outlet of a pilot valve module is connected with an oil inlet of a support leg operation handle; an oil outlet of a support leg electronic control valve set is connected with a work oil outlet of a reversing valve; the work oil outlet of the reversing valve is respectively connected with a rodless cavity and a rodlike cavity of a left support leg retracting oil cylinder; the work oil outlet of the reversing valve is respectively connected with a rodless cavity and a rodlike cavity of a right support leg retracting oil cylinder; and a control device is electrically connected with the support leg electronic control valve set and the pilot valve module individually. Great micro-motion and maneuverability can be achieved when the engineering truck slowly moves by the use of the electrohydraulic control system, the method, the detection method and the engineering truck; high signal collection precision is achieved; accurate judgments can be conducted to practical work conditions of the engineering truck; the engineering truck has strong controllability; mis-operation by operators can be avoided, so whole truck safety can be improved; service life of a balance valve is prolonged; detection time can be reduced; and occurrence rate of high risk accidents can be lowered.

Description

technical field [0001] The invention relates to the technical field of hydraulic control, in particular to an electro-hydraulic control system, method, detection method and engineering vehicle of an outrigger of an engineering vehicle. Background technique [0002] A construction vehicle is a kind of construction machinery with a wide range of uses, such as a crane, a dynamic compaction machine and so on. Different uses and complex working conditions determine the complexity of the hydraulic system of the construction vehicle, among which the hydraulic and electronic control systems of the outriggers play an important role in the balance of the whole vehicle. Because the outrigger plays an important role in the construction vehicle, the control system requires that the outrigger is simple to operate, safe and reliable, and responds quickly to reduce the incidence of high-risk accidents. However, at present, the faults of the hydraulic system of the outriggers of the common ...

AI Technical Summary

Problems solved by technology

However, at present, the failures of the outrigger hydraulic systems of engineering vehicles are relatively hidden, prone to sudden failures, relatively difficult to troubleshoot, long maintenance time, short service life of hydraulic components, and frequent replacement

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