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Stepped disc type ratio electromagnet

A proportional electromagnet and step-type technology, applied in the field of proportional electromagnets, can solve the problems of difficulty in guaranteeing dimensional accuracy, limiting the output force of the electromagnet, complicated processes, etc., to avoid self-locking force, improve output force, and have good process performance. Effect

Inactive Publication Date: 2012-07-25
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of the armature cone angle is a sensitive parameter that affects the performance of the electromagnet. The process is complex and the dimensional accuracy is difficult to guarantee. At the same time, the magnetic saturation phenomenon of the armature cone angle also limits the further improvement of the output force of the electromagnet.

Method used

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  • Stepped disc type ratio electromagnet

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Embodiment Construction

[0035] Figure 1 ~ Figure 3 Combined with a stepped disc-type proportional electromagnet, it includes a fixed nut 1, an armature 2, a limit piece 3, a permanent magnet 4, a push rod 6, a control coil 7, a magnetic core column 8 with a cavity inside, Hollow magnetically conductive outer casing 9; armature 2, magnetically conductive core column 8 and magnetically conductive outer casing 9 are all made of soft magnetic material, and push rod 6 is made of nonmagnetically conductive material.

[0036] The magnetically conductive outer shell 9 is a hollow cubic shell, and the magnetically conductive core column 8 is set in the inner cavity of the magnetically conductive outer shell 9, and the magnetically conductive core column 8 is fixedly connected with the magnetically conductive outer shell 9; The permanent magnet 4 and the control coil 7 are arranged in the annular space formed by 8 and the magnetically permeable outer shell 9 respectively.

[0037] A stopper 91 fixedly connec...

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Abstract

The invention discloses a stepped disc type ratio electromagnet which comprises an armature (2), a push rod (6) and the like, wherein the armature (2) comprises a bottom (21), an annular side wall (20) and an outer ring (25); the end surface of the annular side wall (20) is a stepped surface (22); a radial working air gap I (203) is formed between the annular side wall (20) and a magnetic conduction shell (9); a radial working air gap II (204) is formed between the annular side wall (20) and a magnetic conduction iron core column (8); an axial working air gap III (201) is formed between the outer ring (25) and the magnetic conduction shell (9); an axial working air gap IV (202) is formed between the bottom (21) and the magnetic conduction iron core column (8); and a permanent magnet (4) is arranged in an annular space formed by the magnetic conduction iron core column (8) and the magnetic conduction shell (9). The ratio electromagnet has the characteristics of good ratio property and the like.

Description

technical field [0001] The invention relates to a proportional electromagnet with a disc structure. Background technique [0002] The proportional electromagnet has horizontal displacement-force characteristics, and is an electric-mechanical conversion device with proportional control characteristics, which is widely used in various proportional control systems. Invention patent CN200910097989 discloses a double-cone disc proportional electromagnet, which adopts the structure of a double-cone disc armature, and utilizes the characteristic that the cone angle of the armature is in a magnetic saturation state when energized to realize the proportional characteristic of force. However, the size of the armature cone angle is a sensitive parameter affecting the performance of the electromagnet. The process is complex and the dimensional accuracy is difficult to guarantee. At the same time, the magnetic saturation phenomenon of the armature cone angle also limits the further impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/08H01F7/122
Inventor 满军丁凡李其朋陈兴达笪靖满在朋
Owner ZHEJIANG UNIV
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