Two-dimensional half-bridge type electro-hydraulic proportional reversing valve based on Halbach array bidirectional magnetic suspension shaft coupling

Abstract

The invention provides a two-dimensional half-bridge type electro-hydraulic proportional reversing valve based on a Halbach array bidirectional magnetic suspension shaft coupling. The two-dimensionalhalf-bridge type electro-hydraulic proportional reversing valve comprises a two-dimensional half-bridge type electro-hydraulic proportional reversing valve body, a proportional electromagnet and the Halbach array bidirectional magnetic suspension shaft coupling, wherein the two-dimensional half-bridge type electro-hydraulic proportional reversing valve body is a 2D valve composed of a valve core and a valve base body, the left end of the valve base body is provided with one bidirectional proportional electromagnet, the left end of the valve core is provided with one Halbach array bidirectionalmagnetic suspension shaft coupling, the valve core is connected with the bidirectional proportional electromagnet through the Halbach array bidirectional magnetic suspension shaft coupling, the poleshoe surfaces of yoke irons are provided with Halbach array magnetic sheets in a pasted manner, the wing surfaces of the upper and lower two sides of an oblique wing promoter corresponding to the poleshoe surfaces of yoke irons are provided with the Halbach array magnetic sheets in a pasted manner, so that magnetic repulsion force is formed, and the magnetic repulsion force makes the oblique wingpromoter be capable of being 'suspended' between the yoke irons purely depending on magnetic force without any help of mechanical structures, a left-end high-pressure round hole in the left end of the valve core, a tight-end high-pressure round hole, a right-end low-pressure round hole and a feeling channel form a four-way rotary valve and form a hydraulic resistance half bridge by being connected in series, and the pressure of a left sensitive cavity and a right sensitive cavity at the two ends of the valve core is controlled.

Description

technical field [0001] The invention belongs to a flow and reversing 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 Halbach array two-way magnetic suspension coupling. Background technique [0002] Since the emergence of electro-hydraulic servo control technology in the 1940s, it has occupied a high-end position in electromechanical transmission and control technology due to its high power-to-weight ratio, large output force (torque) and excellent static and dynamic characteristics. Aerospace, military weapons, ships, large power stations, steel and other strategic industrial occasions have achieved great success. However, the electro-hydraulic servo valve is extremely sensitive to oil pollution, has harsh application and maintenance conditions, and pursues zero-position characteristics to meet the requi...

AI Technical Summary

Problems solved by technology

The main problem of this valve is that the pressure-torsion coupling that plays the role of pressure-torsion amplification is a roller inclined mechanical mechanism, which has non-linear links such as friction and assembly clearance, which affects the linearity, repeatability and hysteresis of the electro-hydraulic proportional valve Static characteristics such as rings will have a greater impact on

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