Solenoid assembly for solenoid directional valve

Abstract

The invention relates to an electromagnet assembly of a magnetic exchange valve. The electromagnet assembly comprises a first iron core, a second iron core, a push-pull rod, a cooling bracket, an armature, coils, a magnetic yoke, a magnetic isolating sleeve and a magnetic conducting ring, wherein the armature, the coils, the magnetic yoke, the magnetic isolating sleeve and the magnetic conducting ring are arranged in an axial installation through hole of the cooling bracket; the first iron core and the second iron core are arranged at two ends of the cooing bracket separately; one end of the armature and one end of the push-pull rod are assembled or manufactured into a whole; two ends of the magnetic isolating sleeve are assembled or welded on the first iron core and the second iron core separately and the magnetic isolating sleeve is located on the periphery of the armature; and two coils are arranged on the periphery of the magnetic isolating sleeve and the magnetic conducting ring is arranged between the two coils. The electromagnet assembly is characterized in that the magnetic yoke is formed by two or more strip-shaped magnetic yokes; two or more strip-shaped magnetic yoke slots are formed in the inner wall of the cooling bracket; and the strip-shaped magnetic yokes are embedded into the strip-shaped magnetic yoke slots separately. The electromagnet assembly has the advantages that the eddy current phenomenon can be reduced, heat dissipation of the coils is facilitated and the electromagnetic conversion efficiency is improved.

Description

technical field [0001] The invention relates to an electromagnetic reversing valve, in particular to an electromagnet assembly of an electromagnetic reversing valve used in engineering vehicles. Background technique [0002] The electromagnet assembly of the electromagnetic reversing valve used in existing engineering vehicles (including forklifts, tractors, loaders, etc.) includes a first iron core, a second iron core, a yoke, a coil and an insulating protective layer. The yoke is a ring structure, and the yoke fits snugly on the outer circumference of the coil, and then the insulating protective layer is packaged on the outer circumference of the yoke, so that not only the positioning of each component must be ensured during the packaging process, but also the coil The surface is not easy to dissipate heat, and it is easy to generate eddy current phenomenon, which reduces the electromagnetic conversion efficiency. Contents of the invention [0003] The purpose of the pr...

AI Technical Summary

Problems solved by technology

[0002] The electromagnet assembly of the electromagnetic reversing valve used in existing engineering vehicles (including forklifts, tractors, loaders, etc.) includes a first iron core, a second iron core, a yoke, a coil and an insulating protective layer. The yoke is a ring structure, and the yoke fits snugly on the outer circumference of the coil, and then the insulating protective layer is packaged on the outer circumference of the yoke, so that not only the positioning of each component must be ensured during the packaging process, but also the coil The surface is not easy to dissipate heat, and it is easy to generate eddy current phenomenon, which reduces the electromagnetic conversion efficiency

Images