Constant tension control device of hydraulic winch

Abstract

The invention discloses a constant tension control device of a hydraulic winch, which is particularly applied to constant tension control. An electro-hydraulic control system comprises an oil tank, a power pump group, an electromagnetic reversing valve, hydraulic locks, pressure sensors, a motor safety valve, a hydraulic motor, a winch, a cable arranger, a tension sensor, a load, a programmable logic controller (PLC), a one-way throttling valve, an electric-hydraulic proportional overflow valve and a cooling valve, wherein the power pump group is connected with an oil inlet of the electromagnetic reversing valve; oil outlets a and b of the electromagnetic reversing valve are connected with the hydraulic locks and the one-way throttling valve, respectively; an oil return inlet of the electromagnetic reversing valve is connected with an oil inlet of the electric-hydraulic proportional overflow valve; an oil outlet of the electric-hydraulic proportional overflow valve is connected with the cooling valve; an oil return inlet of the cooling valve is connected with the oil tank; the two symmetric hydraulic locks on oil paths corresponding to the two oil outlets of the electromagnetic reversing valve are connected with openings A and B of the hydraulic motor, respectively; the motor safety valve is arranged in parallel between two oil cavity openings A and B of the hydraulic motor. The constant tension control device of the hydraulic winch has functions for setting and measuring the tension state of a cable and making the tension state constant under complicated sea conditions, and is high in response speed and high in anti-interference performance.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure and relates to a constant tension control device of a hydraulic winch. Background technique [0002] Hydraulic winches are widely used in marine engineering, construction, water conservancy engineering, mining and other operating fields. They are important auxiliary tools for retracting, lifting, and flat towing of equipment and materials. With the increase of the rated working conditions of the hoisting machinery and the complexity of the working environment, the requirements for the safety, stability and controllability of the hydraulic winch are getting higher and higher. Especially during the retraction and towing operation of marine engineering equipment, with the change of sea conditions, the tension in the cable is prone to sudden changes. If the tension is too high, the cable will easily break, and if the tension is too small, the cable will loosen and cause the equipment to col...

AI Technical Summary

Problems solved by technology

At present, the existing constant tension control system has problems such as complex structure, low control precision, poor safety and stability, etc.

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