Synchronous control device of hydraulic headstock gear

Abstract

The invention relates to hydraulic start-stop technique field, particularly a control device of high degree of accuracy synchronization hydraulic start-stop machine. The hydraulic can auto controls double-cylinder synchronous operation in start-stop progress of anchor gate. It has a hydraulic and an electricity control device. The hydraulic control device makeup with an oil pump electric engine group, two rectified speed control value group and a by-pass cut-away gate gurgle value group. The electricity control system makeup with a gate opening-detection device and a PLC. The invention use synchronous closed loop program combine the coarse adjustment of rectified speed control value group and gate gurgle of by-pass cut-away gate gurgle value group. It makes high degree of accuracy synchronization of two fluid cylinders and low cost of hydraulic start-stop machine.

Description

technical field [0001] The invention relates to the technical field of hydraulic hoists, in particular to a synchronous control device for a hydraulic hoist which can automatically control the synchronous operation of two cylinders and has high synchronization precision during the opening and closing process of a gate. Background technique [0002] The hydraulic hoist has a series of advantages such as high transmission efficiency, stable operation, large opening and closing capacity, compact structure, light weight, simplified hydraulic structure, stepless speed regulation, convenient on-site operation and remote centralized control, etc., and gradually replaces Hoist hoist is widely used in water conservancy projects. For the hydraulic hoist with double lifting points, although the gate itself has a relatively large spatial rigidity, there is always a synchronization deviation during operation. The synchronous deviation of the two hydraulic cylinders of the hydraulic hois...

AI Technical Summary

Problems solved by technology

Since the hydraulic hoists used in water conservancy projects are often of large capacity and long working strokes, it is difficult to control if the volume synchronization is used; the synchronization accuracy of the servo synchronization is high, but the servo valve is particularly expensive; since the gate itself has a certain rigid synchronization function Therefore, flow synchronization is often used in water conservancy projects. Currently, flow synchronization is more commonly used with throttle valve synchronization, flow diversion and flow collection valve synchronization, and proportional speed control valve synchronization. However, for some occasions that require high synchronization accuracy, it still cannot meet the use requirements.

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