Two-Dimensional Half-Bridge Electro-hydraulic Proportional Directional Valve Based on Push Rod Mid-mounted Roller Coupling

Abstract

The two-dimensional half-bridge electro-hydraulic proportional directional control valve based on the push rod mid-mounted roller coupling includes bidirectional proportional electromagnets, push rod mid-mounted roller couplings and 2D half-bridge electro-hydraulic valves. Hydraulic proportional reversing valve body, 2D half-bridge electro-hydraulic proportional reversing valve body includes valve body, valve sleeve and valve core. A two-way proportional electromagnet is installed on the left end of the valve body, and a push rod middle is installed on the left end of the valve core. Mounted roller coupling, the valve core is connected to the two-way proportional electromagnet through the push rod mid-mounted roller coupling. The invention adopts a two-dimensional hydraulic amplifying mechanism with double degrees of freedom of the spool. The rotation of the spool is used as the pilot stage, and the axial movement of the spool is used as the power stage. The pilot control stage and the power stage are integrated on a single spool. The structure Simple, inexpensive to manufacture and greatly improved power-to-weight ratio.

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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