Hydraulic system of articulating arm type aerial work vehicle

Abstract

The invention relates to a hydraulic system of an articulating arm type aerial work vehicle. The rod chamber of the lower luffing cylinder of the hydraulic system of the crank arm type aerial work vehicle communicates with the middle luffing rodless chamber through the first two-way balance valve and the second two-way balance valve, wherein the first two-way balance valve and the second two-way balance The communication oil passage between the valves communicates with the oil inlet port of the auxiliary synchronous valve; the first oil control port of the first two-way balance valve communicates with the rod chamber of the middle luffing through the second two-way balance valve, wherein the first oil control port communicates with the The communication oil passage between the second two-way balance valves communicates with the oil outlet of the auxiliary synchronous valve; the second oil control port of the second two-way balance valve communicates with the rodless chamber of the lower amplitude through the first two-way balance valve; wherein, the auxiliary The synchronous valve consists of a relief valve and a throttle valve connected in parallel. The hydraulic system of the crank arm type aerial work vehicle provided by the present invention uses the auxiliary synchronous valve to make the lower luffing oil cylinder and the middle luffing oil cylinder move simultaneously, so that the hydraulic system of the articulating arm type aerial work vehicle has a compact layout and is easy to maintain.

Description

technical field [0001] The invention relates to the technical field of aerial work equipment, in particular to a hydraulic system of an articulating arm type aerial work vehicle. Background technique [0002] The articulating arm type aerial work vehicle is a lifting device used for high-altitude operations. It can cross obstacles for high-altitude operations. When the platform is lifted to any position, it can work while walking. It is widely used in municipal, electric power, street lights, advertising, communications, and photography. , gardens, transportation, docks, airport ports, large industrial and mining enterprises and other industries installation and maintenance and climbing operations. [0003] At present, the hydraulic system of the articulated boom aerial work vehicle has a scattered layout, which leads to the problem that the hydraulic system is not easy to maintain. Contents of the invention [0004] Based on this, it is necessary to provide a hydraulic s...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an articulating arm type aerial work vehicle hydraulic system with a centralized layout and easy maintenance to solve the problem of difficult maintenance caused by the scattered layout of the existing hydraulic system of aerial work vehicles.

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