Quantitative pump hydraulic control system of work mechanism of underground carrying scraper

Abstract

The invention discloses a quantitative pump hydraulic control system of a work mechanism of an underground carrying scraper, comprising a steering oil pump, a steering multi-path valve, a work oil pump, a work multi-path valve and a pilot valve, wherein a plurality of control oil paths are arranged between the pilot valve and the work multi-path valve; an outlet oil path of the steering oil pump is connected with an inlet oil path of the steering multi-path valve; an outlet oil path in the middle path of the steering multi-path valve and an outlet oil path of the work oil pump are combined into an oil path which is connected with an inlet oil path of the work multi-path valve; and a pressure-relief bypass is arranged on the outlet oil path in the middle path of the steering multi-path valve or the outlet oil path of the work oil pump and is provided with a hydraulic control two-position and two-way valve, so that the work mechanism of the underground carrying scraper can automatically select a single-pump oil supply state or a dual-pump oil supply state according to the operation requirement. In addition, the energy utilization rate of the quantitative pump hydraulic control system of the underground carrying scraper can be improved and the equipment availability of the underground carrying scraper can be improved.

Description

technical field [0001] The invention relates to a hydraulic control system of the working mechanism of an underground scraper, in particular to a quantitative pump hydraulic control system of the working mechanism of the underground scraper. Background technique [0002] The hydraulic system is one of the key systems of the underground scraper, and its performance directly affects the reliability and comprehensive performance indicators of the scraper. [0003] The hydraulic system of the underground scraper in the prior art includes a quantitative pump hydraulic system and a variable pump hydraulic system. Compared with the variable pump hydraulic system, the quantitative pump hydraulic system is simple in system, low in cost, reliable in use, convenient in maintenance, less demanding on oil cleanliness, strong in adaptability, and able to adapt to the harsh environment of underground mines. equipment has been widely used. [0004] In the prior art, in the shoveling worki...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a quantitative pump hydraulic control system of the working mechanism of the underground scraper, which can improve the energy utilization rate of the quantitative pump hydraulic system of the underground scraper, and solve the problem of excessive energy consumption during the prying process of the bucket , reduce the heating of the hydraulic system, reduce the failure of the hydraulic system, improve the traction of the chassis during shoveling, improve the filling rate of the bucket for one shoveling, improve production efficiency, reduce the cost of mining, and improve the equipment integrity rate of the underground scraper

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