Technology for controlling multiple hydraulic pumps by two-circuit oil pipes

Abstract

The invention provides a technology for controlling multiple hydraulic pumps by two-circuit oil pipes. Two long oil pipes are designed to be respectively used as a high-pressure main oil supply pipe and an oil drain pipe, two main oil pipes are connected with a plurality of three-way valves, and the three-way valves are connected with oil inlet holes and oil outlet holes of a plurality of hydraulic pumps in series through branch oil pipes. An electromagnetic valve is mounted at the front end of the oil inlet hole and the oil outlet hole of each hydraulic pump, and the opening or closing of the hydraulic pump is controlled by the electromagnetic valve.

Description

technical field [0001] The invention belongs to the field of hydraulic transmission, and in particular relates to a technology for controlling multiple hydraulic pumps by double-circuit oil pipes. . Background technique [0002] With the popularization and use of super-high concrete pouring pump trucks, super-high aerial ladders, and super-high fire trucks, the number of hydraulic pumps configured on a single piece of climbing equipment has doubled. The existing hydraulic pumps are all equipped with a pump and a set of oil pipes. , a set of equipment normally has up to seven or eight hydraulic pumps, and these hydraulic pumps are not installed centrally. Taking the concrete pump truck as an example, the existing highest working arm of the concrete pump truck is 72 meters high, and it can be installed on one pole. Five hydraulic pumps and more than a dozen oil pipes are easy to arrange. If a dozen, twenty or more hydraulic pumps are installed on the main working parts of a p...

AI Technical Summary

Problems solved by technology

[0002] With the popularization and use of super-high concrete pouring pump trucks, super-high aerial ladders, and super-high fire trucks, the number of hydraulic pumps configured on a single piece of climbing equipment has doubled. The existing hydraulic pumps are all equipped with a pump and a set of oil pipes. , a set of equipment normally has up to seven or eight hydraulic pumps, and these hydraulic pumps are not installed centrally. Taking the concrete pump truck as an example, the existing highest working arm of the concrete pump truck is 72 meters high, and it can be installed on one pole. Five hydraulic pumps and more than a dozen oil pipes are easy to arrange. If a dozen, twenty or more hydraulic pumps are installed on the main working parts of a piece of equipment, there are dozens of hydraulic oil pipes alone. It will take up a lot of space, especially when all the oil pipes are gathered together at the bottom of the equipment, it may make it impossible to arrange so many oil pipes in the originally limited space, and even make the entire super high pump truck, super high ladder, and super high fire truck None of the hydraulic devices can work reliably, which has become a major technical obstacle in the manufacture of aerial work equipment. At present, there is no way to solve this technical problem.