High-pressure oil circuit manifold block

Abstract

The invention discloses a high-pressure oil circuit manifold block. The high-pressure oil circuit manifold block comprises a manifold block body, an oil inlet connector, an oil inlet sealing ring, a steel ball, a spring, a guiding and limiting device, a piston sealing ring, a piston, a pressure regulation fixing device, a pressure regulation rod, a speed regulation valve element, a speed regulation fixing device, a speed regulation rod, a speed regulation valve element sealing ring, an oil outlet connector and an oil outlet sealing ring. According to the high-pressure oil circuit manifold block, the structure is reasonable and simple, the production cost is low, installation is convenient, centralized control can be conducted, installation is facilitated, the number of valve pipe connectors and pipelines for mutual connection between valve blocks is reduced, and thus the number of leakage points and the number of fault points are reduced; the multiple sealing rings are arranged, it is guaranteed that oil leakage of the oil circuit manifold block is avoided, and thus the oil circuit manifold block is more stable and reliable during work; the high-pressure oil circuit manifold block is designed to be of an integrated structure, and thus it is guaranteed that the structure of a hydraulic system is compact; in addition, maintenance and repair are quite convenient, and volume production is quite easy.

Description

technical field [0001] The invention relates to the technical field of hydraulic integrated block structures, in particular to a high-pressure oil circuit integrated block. Background technique [0002] At present, with the development of hydraulic technology, the hydraulic system of construction machinery is developing towards the direction of high pressure and large flow integration; therefore, the requirements for the hydraulic system require the organic combination of multiple hydraulic valves to achieve different functions, but the existing The structure of the hydraulic system is relatively scattered, and there are many connection nodes between the hydraulic valves, which is easy to cause oil leakage, and it is difficult to repair and maintain; in the traditional hydraulic system, the one-way valve adopts the straight-through type, and the pipeline (seamless steel pipe) is used to ) to connect the four one-way valves, and each one-way valve needs two pipelines, which m...

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Problems solved by technology

[0002] At present, with the development of hydraulic technology, the hydraulic system of construction machinery is developing towards the direction of high pressure and large flow integration; therefore, the requirements for the hydraulic system require the organic combination of multiple hydraulic valves to achieve different functions, but the existing The structure of the hydraulic system is relatively scattered, and there are many connection nodes between the hydraulic valves, which is easy to cause oil leakage, and it is difficult to repair and maintain; in the traditional hydraulic system, the one-way valve adopts the straight-through type, and the pipeline (seamless steel pipe) is used to ) to connect the four one-way valves, and each one-way valve needs two pipelines, which makes the pipelines many and complicated and occupies a large area; the pipelines are connected with the above valves by welding or threaded connection, and there are many seams ;In use, the oil pressure in the pipeline is frequently switched between high and low pressure; when the outlet pressure of the pump is high and the inlet and outlet are frequently reversed, it will cause impact on the pipeline, often causing cracking of the weld or failure of the threaded connection, resulting in Leakage in the pipeline; the leaked oil will cause serious pollution to the workplace and cause injury to the personnel on site

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