Volume closed-loop synchronous oil cylinder and control system

Abstract

The invention relates to a volume closed-loop synchronous oil cylinder and control system, which comprises an outer cylinder barrel, wherein a piston is slidably arranged in the outer cylinder barrel,one side of the piston is connected with a piston rod, the piston rod is slidably arranged in the outer cylinder barrel, an inner cavity of the outer cylinder barrel is divided into an outer cylinderrod cavity and an outer cylinder rodless cavity by means of the piston, and an outer cylinder rod cavity oil port and an outer cylinder rodless cavity oil port are further formed in the outer cylinder barrel; a second piston is slidably arranged in the piston rod and the piston, and is connected with one end of the second piston rod; the other end of the second piston rod is connected with a right end cover; an inner cavity of the piston rod is divided into an inner cylinder rod cavity and an inner cylinder rodless cavity by means of the second piston; and an inner cylinder rodless cavity oilport is formed in the piston rod. The volume closed-loop synchronous oil cylinder and control system is simple and compact in structure; the synchronous oil cylinders are connected in series by meansof an oil outlet volume cavity and an oil inlet volume cavity which are completely equal and are generated when telescopic stroke occurs on synchronous oil cylinders, so as to achieve volume closed-loop synchronous control; and the volume closed-loop synchronous oil cylinder and control system has very high synchronization precision, and the measurement and calculation synchronization precision reaches up to five thousandths.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission equipment and relates to a volume closed-loop synchronous oil cylinder. Background technique [0002] Conventional synchronous control has independent torsion beam structure to achieve mechanical synchronization, split flow and current collection control synchronization, synchronous motor, series cylinder volume synchronization, electric ratio control closed-loop synchronization and other synchronous control methods. These methods have short transmission distance, low control accuracy, and pollution interference. Large impact, high cost, large-scale multi-stage synchronous cylinder, complex system control and other issues. Contents of the invention [0003] The purpose of the present invention is to provide a volumetric closed-loop synchronous oil cylinder and a control system, which can solve the problems of short transmission distance, low control precision, large influence of p...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a volumetric closed-loop synchronous oil cylinder and control system, which can solve the problems of short transmission distance, low control precision, large pollution interference, high cost, large scale of multi-stage synchronous oil cylinder, complex system control, and low cost. , high reliability, high synchronization accuracy, automatic synchronization without additional control

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