Hydraulic system, control method thereof and excavator

Abstract

The invention provides a hydraulic system, a control method thereof and an excavator, and relates to the technical field of hydraulics. The hydraulic system comprises an oil storage device, a detection device and a filtering device, wherein the detection device and the filtering device are connected with each other. The detection device is connected with the oil storage device and used for detecting the cleanliness of oil liquid in the oil storage device. The filtering device communicates with the oil storage device through an oil outlet way and an oil return way to form a circulation oil wayand is used for filtering the oil liquid in the oil storage device. Under the condition that the detection device detects the cleanliness of the oil liquid in the oil storage device in real time, thepurpose of cleaning and filtering the non-standard oil liquid is completed through the operation of operators or autonomous judgment of the filtering device, that is, the source, namely the oil storage device, of the whole hydraulic system is cleaned, so that the situation that an existing hydraulic device adopts a fixed-cycle maintenance mode, maintenance is inadequate and accordingly the deviceis likely to break down or the maintenance cost is high due to excessive maintenance is avoided, the maintenance time of the device is effectively shortened, and the operation efficiency of the deviceis improved.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a hydraulic system, a control method thereof, and an excavator. Background technique [0002] Since the hydraulic system can reduce the size of the components to a certain extent and achieve more precise control, it is widely used in large machinery. As one of them, the hydraulic excavator is widely used on the construction site. Due to the complex and changeable construction conditions, and the usually harsh working environment, it is easy to cause the hydraulic excavator to malfunction due to contamination of the oil in the hydraulic system. [0003] The entire hydraulic system of the existing hydraulic excavator relies on the oil suction filter and oil return filter in the hydraulic oil tank to clean the oil. In order to ensure the normal operation of the hydraulic excavator, periodic maintenance is adopted to reduce the breakdown of the excavator. Influenced by actual wor...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic system and its control method, and an excavator to solve the problem of low operating efficiency of existing hydraulic equipment due to insufficient maintenance or excessive maintenance.

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