Compound oil cylinder and refuse compactor thereof

Abstract

The invention relates to a compound oil cylinder and a refuse compactor thereof. The compound oil cylinder comprises a cylinder body, a first-stage piston rod assembly and a second-stage piston rod assembly, wherein the first-stage piston rod assembly separates an inner cavity of the cylinder body into a first-stage cylinder rodless cavity and a first-stage cylinder rod cavity; the second-stage piston rod assembly separates the inner cavity of the first-stage piston rod assembly into a second-stage cylinder rodless cavity and a second-stage cylinder rod cavity; in the extending process of the first-stage piston rod assembly, the first-stage cylinder rodless cavity and the second-stage cylinder rodless cavity are cavities which are not mutually communicated, and the first-stage cylinder rod cavity and the second-stage cylinder rod cavity are cavities which are not mutually communicated; the first-stage cylinder rodless cavity is communicated with a first-stage independent oil inlet, and the first-stage cylinder rod cavity is communicated with a first-stage independent oil outlet; the second-stage cylinder rodless cavity is communicated with a second-stage independent oil inlet, and the second-stage cylinder rod cavity is communicated with a second-stage independent oil outlet. The refuse compactor comprises a refuse box, a compacting device, a driving device and a push shovel, wherein the driving device uses the compound oil cylinder. The invention has simple and compact structure and high control accuracy and can piecewise realize the positions required by parts, and the like.

Description

technical field [0001] The invention mainly relates to the field of hydraulic control equipment, in particular to a hydraulic cylinder and garbage compression equipment using the hydraulic cylinder. Background technique [0002] The structure of the existing multi-stage double-acting oil cylinder is an oil inlet and an oil outlet. The oil cylinders at all levels are interrelated and have no independence. They can only be extended or retracted at one time according to the pre-designed action sequence. If it is necessary to stop at a certain position in the middle of the full stroke, the position signal is generally obtained by installing a position sensor and transmitted to the control system to control the position of the cylinder. For example, a proximity switch is used as a position sensor, and the proximity switch is used to take a signal and transmit it to the control system. The control system makes the hydraulic valve return or change direction, stops the oil supply or...

AI Technical Summary

Problems solved by technology

However, with the traditional multi-stage oil cylinder, in the process of garbage displacement, due to the failure of the position sensor control method, the position control of the oil cylinder is inaccurate, and accidents often damage the front door of the garbage bin, which brings great losses to both users and manufacturers.

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