Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine

Abstract

The invention discloses a hydraulic loop device used for coordinating machine body rotation and movable arm swinging of a digging machine, which belongs to a hydraulic loop device of the digging machine. The hydraulic loop device mainly comprises a hydraulic pump, a rotation motor, a movable arm oil cylinder, a rotation two-way hydraulic control reversing valve, a movable arm two-way hydraulic control reversing valve and a pilot control branch circuit, wherein a rotation manual pilot valve, a movable arm manual pilot valve, a shuttle valve and a one-way hydraulic control stop valve are arranged on the pilot control branch circuit, a first throttle valve is arranged between an oil inlet opening of the shuttle valve and an oil outlet opening of the rotation manual pilot valve, and a second throttle valve is arranged between an oil outlet opening of the shuttle valve and a work oil opening of the one-way hydraulic control stop valve. The invention solves the technical problems of low movable arm swinging speed and inconsistent movable arm swinging and machine body rotation action in the machine body rotation process of the digging machine. The invention has a reasonable structure, and can be widely applied to production and manufacture industry of the digging machine.

Description

technical field [0001] The invention relates to a hydraulic circuit device of an excavator, in particular to a hydraulic circuit device for coordinating the rotation of the body of the excavator and the swing of the swing arm. Background technique [0002] An excavator is an earth-moving machine that uses a bucket to excavate materials that are higher than or lower than the bearing surface, and load them into a transport vehicle or unload them to a stockyard. Hydraulic excavators are mainly composed of engines, hydraulic circuit devices, working devices, traveling devices and electrical controls. The hydraulic circuit device is composed of hydraulic pump, control valve, hydraulic cylinder, hydraulic motor, pipeline, fuel tank and so on. The electrical control system includes monitoring panel, engine control system, pump control system, various sensors, reversing valve, etc. [0003] At present, most common excavators on the market are hydraulic excavators, but there is a c...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hydraulic circuit device for coordinating the rotation of the body of the excavator and the swing of the boom, so as to solve the problem of the slow swing speed of the boom, the swing of the boom and the swing of the boom during the rotation of the body of the excavator. Technical problems of uncoordinated body turning movements

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