Single-phase linear-motion inserting sheet type electromagnet

Abstract

The invention discloses a single-phase linear-motion inserting sheet type electromagnet which comprises an armature assembly, a stator assembly, a shell, a front end cover and a rear end cover, wherein the stator assembly comprises a stator left retainer, a stator left inserting sheet, a stator right retainer, a stator right inserting sheet, a coil retaining frame, a control coil and a circular-ring-shaped permanent magnet. The armature assembly comprises three portions, namely a hollow cup type armature retainer, armature inserting sheets and a push rod, wherein a plurality of inserting slots which are evenly distributed are formed in the radial outer cylindrical surface of the hollow cup type armature retainer, the armature inserting sheets can be inserted into the inserting slots and are made of silicon steel materials. Each arm inserting sheet is in a flat strip shape, is formed in a cold stamping mode and is provided with three rectangular teeth at different intervals, and the widths of the three rectangular teeth are the same. The shell, the front end cover and the rear end cover restraint and fix the stator assembly in the axial direction, and the shell is connected with the front end cover and the rear end cover through bolts.

Description

technical field [0001] The invention belongs to an electro-mechanical converter for an electro-hydraulic high-speed switching valve in the field of fluid transmission and control, and in particular relates to a single-phase direct-acting plug-in electromagnet. Background technique [0002] In the electro-hydraulic proportional / servo control system, the electro-mechanical converter as a key component of the electro-hydraulic control element has a small working stroke, and its performance mainly pursues the real-time and precision of the conversion of electrical energy and mechanical energy, that is, it is required to ensure a certain While outputting force / torque, try to obtain a higher dynamic response. In addition, in special environments (such as vehicle or aerospace applications), it is also required that the valve and the electro-mechanical conversion mechanism can reduce the overall size and weight as much as possible while ensuring the output power. [0003] The contr...

AI Technical Summary

Problems solved by technology

[0004] For high-speed switching electromagnets that require rapidity, the return spring is one of the key components, and its stiffness directly determines the return time of the armature and the natural frequency of the electromagnet; however, as a mechanical part, the spring will inevitably be Fatigue, fracture, corrosion, etc., will cause reliability problems of the electromagnet, affect the service life of the electromagnet, and even lead to failure of the electromagnet in severe cases; in addition, the installation method and position of the spring need to be considered when designing the electromagnet, so that Make its internal structure complex, high processing cost

[0005] In order to overcome the shortcomings of the existing direct-acting high-speed switching electromagnets, such as complex structure, high processing cost, poor reliability, and short service life, relevant technical personnel proposed a structural scheme of a springless direct-acting high-speed switching electromagnet and obtained it. Invention patent authorization, but because the electromagnet is an integral structure, when working in an environment with transient current changes, there is inevitably the problem of eddy currents

The eddy current increases the useless loss and temperature rise of the electromagnet; the eddy current also hinders the change of the current in the control winding, which affects the dynamic performance of the electromagnet; in addition, the characteristics of the integral structure of the stator and rotor also determine In addition, it is necessary to use a whole piece of metal as the soft magnetic material of the iron core, so that the weight remains high and affects the power-to-weight ratio of the whole machine

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