Double-oil cylinder synchronous system for bridge detection operation vehicle

Abstract

The invention relates to a double-oil cylinder synchronous system for a bridge detection operation vehicle; the double-oil cylinder synchronous system at least comprises two drive oil cylinders, a balancing valve and two one-way back pressure valves for independently adjusting the back pressure, wherein each drive oil cylinder is a double-acting cylinder, and the two ends of the drive oil cylinder are respectively hinged with a fixed seat and a working platform with one U-shaped section; the two drive oil cylinders and oil ways thereof are connected in parallel; the one-way back pressure valves are respectively connected between rod cavity oil ports of the two drive oil cylinders and a working oil port of the balancing valve or are connected between the rod cavity oil ports of the two drive oil cylinders and a directional valve under the condition of not passing through the balancing valve; and after being intersected, rodless cavity oil ways of the two drive oil cylinders are respectively connected with another working oil port of the balancing valve. A substitute of each one-way back pressure valve is a one-way back pressure valve bank for independently adjusting the back pressure. The double-oil cylinder synchronous system has the beneficial effects that the creeping phenomenon of the working platform when the balancing valve is independently used can be avoided; compared with a closed-loop synchronous control and dynamic balancing valve and other schemes, the double-oil cylinder synchronous system has better economic effect; the synchronism of the oil cylinders at the two sides can be realized; and the damage caused by impact or asynchronism to the working platform can be effectively avoided.

Description

Background technique [0001] The invention relates to a double oil cylinder synchronous system under the condition of small rigidity, which is suitable for deploying the working platform of a bridge inspection vehicle (hereinafter referred to as a bridge inspection vehicle). [0002] The deployment of the existing bridge inspection vehicle working platform is driven by double oil cylinders arranged on both sides of the working platform. Since the working platform has a U-shaped cross-section and poor torsion resistance, the platform rigidity cannot be relied on to achieve balance during the deployment process of the working platform, and the out-of-synchronization of the oil cylinders may easily cause damage to the working platform. In addition, during the deployment process, due to the self-weight of the working platform, the oil cylinder is in a state of tension, which may easily cause the deployment speed to lose control, so it must be controlled. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double oil cylinder synchronous system of a bridge detection work vehicle, to solve the technical problem that the drive of the double oil cylinders is not synchronous, which may easily cause damage to the working platform; The problem of uncontrollable display speed

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