Two-dimensional half-bridge electro-hydraulic proportional directional valve based on push rod mid-mounted roller coupling

Abstract

A two-dimensional half-bridge electro-hydraulic proportional directional valve based on a push rod mid-mounted roller coupling comprises a two-way proportional electromagnet, the push rod mid-mounted roller coupling and a two-dimensional half-bridge electro-hydraulic proportional directional valve body which are sequentially arranged from left to right, and the two-dimensional half-bridge electro-hydraulic proportional directional valve body comprises a valve body, a valve sleeve and a valve element. The two-way proportional electromagnet is mounted at the left end of the valve body, the push rod mid-mounted roller coupling is mounted at the left end of the valve element, and the valve element is connected with the two-way proportional electromagnet through the push rod mid-mounted roller coupling. A two-dimensional hydraulic amplification mechanism with two degrees of freedom of the valve element is adopted, rotation of the valve element serves as a pilot level, axial movement of the valve element serves as a power level, the pilot level and the power level are integrated on the single valve element, the structure is simple, the machining cost is low, and the power-to-weight ratio is greatly increased.

Description

technical field [0001] The invention relates to a directional control valve for electro-hydraulic proportional control technology in the field of fluid transmission and control, in particular to a two-dimensional half-bridge electro-hydraulic proportional reversing valve based on a push rod centered roller coupling. Background technique [0002] Hydraulic transmission technology has been applied to various cranes and presses with the Pascal principle since the 1950s. It has a history of nearly 200 years. At this stage, hydraulic technology and microelectronics technology have been combined. Transmission of as much power as possible in space and precise control, hydraulic technology has made significant progress in achieving high efficiency, high power, low noise, high speed, high pressure, highly integrated, intelligent and other aspects, key applications It is used in industrial occasions such as military weapons, aerospace, ships and oceans, steel smelting, forging and cas...

AI Technical Summary

Problems solved by technology

The ball screw type coupling needs to accurately control the helix angle, otherwise it will be stuck, and the screw will be worn seriously, the life of the parts will be shortened, and the maintenance cost will increase; the elastic reed coupling is due to the elastic element Existence, which will have a great impact on the response characteristics of the electro-hydraulic proportional directional valve, and because the reed is subjected to bending moments during the working process, it will also affect the life of the parts, and it needs to be replaced regularly

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