CN2530390Y

CN2530390Y - Flat three-phase linear induction motor

Info

Publication number: CN2530390Y
Application number: CN 02210740
Authority: CN
Inventors: 杨天夫
Original assignee: Harbin Tech Full Industry Co ltd
Current assignee: Harbin Taifu Electric Co., Ltd.
Priority date: 2002-03-18
Filing date: 2002-03-18
Publication date: 2003-01-08
Anticipated expiration: 2012-03-18

Abstract

The utility model provides a flat three-phase linear induction motor, comprising a primary which consists of primary iron core and a primary coil, and a secondary. The primary iron core is made of two silicon steel sheets with different length of yoke pressing together through rivets; a layer of high temperature insulating adhesive is arranged between the silicon steel sheets. The utility model has the advantages that: simple structure and easy manufacture; the switching mechanism at the central part of the driving device can be removed, so that the energy is saved, the noise is reduced and the maintenance is convenient; the cost is low, the speed is fast and the stroke is long.

Description

Flat three-phase linear asynchronous motor

(1) technical field

The utility model relates to a kind of motor.

(2) background technology

Conventional motors is made up of rotor and stator, its output be revolving force.In many linear drive apparatus or system, all be to adopt electric rotating machine to be converted to rectilinear motion by mechanisms such as chain, steel wire rope, driving-belt, gear or screw mandrels.Because there are the intermediate conversion transmission mechanism in these devices or system, it is slow all to exist mechanism's loss, noise, stroke limiting system and speed, and problems such as maintenance difficult are so machine volume is big, efficient is low, precision is low.If adopt linear motor driving just can overcome these deficiencies.Important a kind of in the linear electric motors is the platypelloid type linear electric motors.It is made up of elementary, secondary.In prior art,, can not form large batch of suitability for industrialized production owing to problems such as the heat radiation that can not overcome the platypelloid type linear electric motors, losses.

(3) the summary of the invention the purpose of this utility model is to provide that a kind of self-radiating is effective, loss is low, can realizes the flat three-phase linear asynchronous motor of industrialization.The purpose of this utility model is achieved in that it comprises the primary and secondary of being made up of elementary iron core, primary coil, and elementary iron core is to be pressed by two kinds of silicon steel sheet snap-fasteners that yoke portion differs in length to constitute, and the high-temperature insulation bond layer is arranged between the silicon steel sheet.The advantage of flat three-phase linear asynchronous motor of the present utility model is: (1) drives linear motion device, directly produce thrust without any need for conversion equipment, therefore, it can save intermediate conversion mechanism, simplify whole device and system, guaranteed the safe and reliable of operation, improved transmission efficiency, reduced manufacturing cost, be easy to safeguard.(2) because electric rotating machine is subjected to action of centrifugal force, so the circumference transition is restricted, and the utility model output is linear thrust, be not subjected to centrifugal action, so space rate is unrestricted.Therefore more suitable when transmitting the high-speed straight-line motion.(3) device of the present utility model directly produces linear electromagnetic thrust by electric energy, and therefore, in drive unit, its motion can not have the machinery contact, makes driving parts not have wearing and tearing, has reduced a large amount of mechanical losss, does not almost have mechanical noise.(4) because elementary iron core is to adopt snap-fasteners to press by two kinds of silicon steel sheets that yoke portion differs in length, and form by the high-temperature insulation bonding agent is bonding, Gu yoke portion varying length, so under ventilation state, can play the effect of fin, reach better heat radiating effect, simultaneously also make the close reduction of motor yoke magnetic, can improve motor performance and reduce cost again; The snap-fastener that presses can make silicon steel sheet closed assembly when repeatedly pressing neat, and button is riveted tightly and closely firmly increased stacking factor, thereby reduces loss.Iron core is bonding, can make silicon steel sheet be bonded as one by insulating adhesive, and is bonding by insulating adhesive, improved the class of insulation between silicon steel sheet, reduces eddy current loss.And press or bondingly all can cancel rivet, reduce the eddy current that the existence because of rivet produces, thereby reduce yoke portion size, save material, reduce the wastage, raise the efficiency.In sum, the utlity model has simple in structurely, easy to manufacture, and can save intermediate conversion mechanism in transmission device, thereby save the energy, reduce noise, assemble easy to maintenancely, cost reduces, and speed height, stroke such as grow at advantage.Therefore it has extensive applicability, can replace the straight-line device of transmission that is driven by electric rotating machine, substitutes cylinder or oil cylinder moving linearly.

(4) description of drawings

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

Fig. 2 is the left view of Fig. 1.

(5) specific embodiments

For a more detailed description to the utility model for example below in conjunction with accompanying drawing:

In conjunction with Fig. 1 and Fig. 2.The composition of flat three-phase linear asynchronous motor comprises the primary and secondary of being made up of elementary iron core 1, primary coil 23, elementary iron core is to be pressed by two kinds of silicon steel sheet snap-fasteners that yoke portion differs in length to form, its underpart has formed fin 4, and the high-temperature insulation bond layer is arranged between the silicon steel sheet.Primary coil is formed by the copper cash coiling.Wherein secondary is by the steel plate that has groove, is embedded in copper bar or aluminum strip in the groove, makes the copper strips of copper bar or aluminum strip shorted on both ends or grid shape that aluminium strip is formed secondary.Operation principle of the present utility model is that primary magnetic field is open magnetic field, produces air-gap field behind the feeding symmetrical sine electric current in three phase windings, and the distribution situation of its air-gap field is similar to electric rotating machine, is that the rectilinear direction that spreads apart is Sine distribution.When three-phase current changed in time, air-gap field prolonged straight line by directed phase sequence and moves, and is translation, is called travelling-magnetic-field.Under the secondary ripple magnetic field intercepts of being expert at, induced electromotive force also produces electric current, just and secondary electric current and air gap magnetic field interaction produce electromagnetic push, as elementary be fixed, secondaryly just do rectilinear motion along the travelling-magnetic-field travel direction.

Second kind of embodiment of the present utility model be secondary for the magnetic that constitutes by steel plate secondary.Promptly play magnetic conduction at the secondary light plate of magnetic and play electric action again.

The third embodiment of the present utility model is secondary composite secondary for compound layer of copper on steel plate or aluminium formation.Steel plate wherein plays the magnetic conduction effect, and copper or aluminium sheet play electric action.

The 4th kind of embodiment of the present utility model is secondary non magnetic secondary for what be made of copper coin or aluminium sheet.Copper coin or aluminium sheet play conductive magneto-conductive.

Claims

1, a kind of flat three-phase linear asynchronous motor, it comprises the primary and secondary of being made up of elementary iron core, primary coil, it is characterized in that: elementary iron core is to be pressed by two kinds of silicon steel sheet snap-fasteners that yoke portion differs in length to constitute, and the high-temperature insulation bond layer is arranged between the silicon steel sheet.

2, flat three-phase linear asynchronous motor according to claim 1 is characterized in that: described secondary be by the steel plate that has groove, be embedded in copper bar or aluminum strip in the groove, the grid shape that the copper strips of copper bar or aluminum strip shorted on both ends or aluminium strip are formed is secondary.

3, flat three-phase linear asynchronous motor according to claim 1 is characterized in that: described secondary for the magnetic that constitutes by steel plate secondary.

4, flat three-phase linear asynchronous motor according to claim 1 is characterized in that: described secondary composite secondary for compound layer of copper on steel plate or aluminium formation.

5, flat three-phase linear asynchronous motor according to claim 1 is characterized in that: described secondary non magnetic secondary for what be made of copper coin or aluminium sheet.