CN201402698Y

CN201402698Y - Novel electromagnetic mechanism

Info

Publication number: CN201402698Y
Application number: CN2009200228154U
Authority: CN
Inventors: 娄杰; 李庆民
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2010-02-10
Anticipated expiration: 2019-03-03

Abstract

The utility model discloses a novel electromagnetic mechanism, having the advantages of simple structure, convenient use, safety, reliability and the like. The electromagnetic mechanism has the following structure that the electromagnetic mechanism comprises a moveable coil L1 and a fixed coil L2, wherein the moveable coil L1 is a solenoid coil a which is winded with the same direction; the fixedcoil L2 comprises a coil b and a coil c, which are winded with one lead wire and have the same size and the inverse winding direction; and the distance from the bottom of the coil a to that of the coil c is a movable region.

Description

Novel electromagnetic mechanism

Technical field

The utility model relates to a kind of novel electromagnetic mechanism.

Background technology

Electromagnetic mechanism is widely used in various device for switching such as electromagnetically operated valve, contactor, circuit breaker, especially fast driving mechanism has broad application prospects in many technical fields such as hybrid solid-state switch, composite type fault current limiter, the quality of power supply, electric power system phased switch.Rapidity and controllability are the main targets that electromagnet thrust mechanism research institute is pursued.The novel thrust mechanism of studying at present comprises permanent magnet drive mechanism, motor operating mechanism and the quick thrust mechanism of Pulse Electric magnetic-type etc., and they are each has something to recommend him aspect action rapidity and precise control.The electromagnetic mechanism of joining permanent magnetism mainly is made of permanent magnet, coil and iron core, and is simple in structure, and bistable behavior is good; But also need iron core, its inductance and time constant are also bigger.The motor operating mechanism has precise control and advantages such as the action dispersiveness is little because of the complete controllability of utilizing motor, but also has the problems such as stable state maintaining body that operate time is long, control method is complicated and needs are special.Pulse Electric magnetic-type repulsion mechanism utilizes generation repulsion between two tabular coils (or plate coil and copper dish) and realizes driving, its inductance and time constant are little, can in the extremely short time, produce very big pulse-electromagnetic force by capacitor discharge, has the dispersed advantage such as little of quick action, time, but the crash shock problem that causes too greatly because of responsiveness is especially outstanding, need complicated buffer gear, and the controllability of its course of action is relatively poor, is unfavorable for the tracking of realization speed.

In fact, simple and easy and reliable physical topological structure, and simple and accurately mathematical analysis model, most important to rapidity and the controllability that realizes electromagnetic push mechanism, also be the prerequisite basis of optimized Structure Design and motion control.

Summary of the invention

The purpose of this utility model is exactly in order to address the above problem, and a kind of novel electromagnetic mechanism with advantage such as simple in structure, easy to use, safe and reliable is provided.

For achieving the above object, the utility model adopts following technical scheme:

A kind of novel electromagnetic mechanism, it comprises moving coil L ₁With fixed coil L ₂, moving coil L wherein ₁For same around solenoid coil a to coiling; Fixed coil L ₂Comprise with a lead coiling big or small identical, around to opposite coil b and coil c, coil a bottom is movable interval to the distance of coil c bottom.

The hanging of described coil b and coil a; Align with the center line of coil a in the top of coil c.

The beneficial effects of the utility model are: except that having the reliable advantage of simple structure, also have simply and accurately advantage of mathematical analysis model, for the optimal design and the controlled of motion process of realizing thrust mechanism are laid a good foundation.Prototype experiment has been verified the validity of this mechanism.Can be applicable to breaker operation mechanism, electromagnetic launch system (as magnetic artillery etc.).

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is L ₁During by electric current the initial magnetic field that produces distributed on (the yz plane at the x=0 place of only drawing);

Fig. 3 is radially (level) component size and a direction of the interior magnetic field of regional m, regional n.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

Among Fig. 1, it is by two groups of coil L ₁With L ₂Constitute.Wherein, moving coil L ₁Be same around solenoid coil a to coiling; Fixed coil L ₂Comprise with a lead coiling big or small identical, around to opposite coil b and c.The hanging of coil b and coil a; Align with the center line of coil a in the top of coil c.Coil a bottom is movable interval to the distance of coil c bottom.As a, b, when three coils of c flow through same electric current, L ₁At L ₂The magnetic field that produces will interact and relative motion that vertical direction takes place (is moving coil L shown in the figure ₁Vertically up motion).

Here be easy analysis, with L ₂At L ₁Stressed in the magnetic field that produces is example.L ₁To produce initial magnetic field distribution (the yz plane at the x=0 place of only drawing) shown in Figure 2 during by electric current.Corresponding Distribution of Magnetic Field profile shown in Figure 2, the magnetic field in regional m, regional n radially (level) component size and direction are represented with solid line, dotted line respectively as shown in Figure 3.Like this, be interface with z=0, L ₁Through-flow back is opposite in radially (level) magnetic-field component direction that upper and lower two hemispherical area produce, and the closer to two ends of solenoid coil a, radially (level) magnetic-field component is big more.Therefore, the coil b of the differential concatenation in two zones, office and coil c will be subjected to unidirectional vertical electromagnetic force (being beneficial to fast driving).According to the sense of current shown in Figure 1, L ₂To be subjected to vertically making a concerted effort down, that is L ₁Be subjected to electromagnetic force upwards and produce motion.

Claims

1. a novel electromagnetic mechanism is characterized in that, it comprises moving coil L ₁With fixed coil L ₂, moving coil L wherein ₁For same around solenoid coil a to coiling; Fixed coil L ₂Comprise with a lead coiling big or small identical, around to opposite coil b and coil c, coil a bottom is movable interval to the distance of coil c bottom.

2. novel electromagnetic mechanism as claimed in claim 1 is characterized in that, the hanging of described coil b and coil a; Align with the center line of coil a in the top of coil c.