CN2310419Y

CN2310419Y - Housing secondary type tube-shaped straight line induction motor

Info

Publication number: CN2310419Y
Application number: CN 97228905
Authority: CN
Inventors: 叶云岳
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1997-10-22
Filing date: 1997-10-22
Publication date: 1999-03-10
Anticipated expiration: 2007-10-22

Abstract

The utility model discloses a housing secondary type tube-shaped straight line induction motor. The primary level is arranged inside and is fixed on a mandrel frame. The secondary level of the tubular type is sheathed outside the primary level. The inner wall surface contacts a spherical guide device arranged on the mandrel frame and do the rectilinear motion along an axial line. The linear motor with the structure can be used as a power device, can be widely apply to a mechanism device with linear operation, and is especially suitable for the occasion of vertical displacement.

Description

Shell secondary pole type pipe-shape straight-line induction motor

The utility model belongs to a kind of linear motor.

Known pipe-shape straight-line induction motor, commonly cylinder type is outside elementary, and secondary interior, its motion mode is nothing more than two kinds: i.e. casing primary fixed, axle collateral motion; Or the axle secondary fixed, the elementary motion of casing.The former is the most frequently used, the latter is rare, make as elementary coil windings motionless, and require casing to move as secondary realization shell, this is a kind of new structure undoubtedly, and the tube-type linear motor of this new construction does not see that as yet the document record is arranged, and existing common cylindrical linear does not possess this structure function.

The purpose of this utility model provides a kind of elementary interior, outside secondary, and primary fixed, and the secondary shell secondary pole type pipe-shape straight-line induction motor of doing straight reciprocating motion is to expand the linear electric motors application scenario.

Shell secondary pole type pipe-shape straight-line induction motor of the present utility model, comprise primary and secondary, elementary alternately repeatedly being put by coil windings and iron core forms, feature is that primary fixed is on the mandrel frame, on the mandrel frame elementary two ends at least the one end be provided with the track-type facilities of guiding collateral motion, cast secondary be enclosed within elementary outside, inner wall surface thereof is touched mutually with track-type facilities.Like this, when elementary energising, the secondary guiding by guide rail done straight reciprocating motion.

Be generally and make guide rail have higher precision and stability, track-type facilities preferably adopts ball bearing guide bushing.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is a kind of concrete structure schematic diagram of the utility model;

Fig. 2 is the ball bearing guide bushing schematic diagram;

Fig. 3 is secondary a kind of concrete structure figure of the present utility model;

Fig. 4 is secondary another kind of concrete structure figure of the present utility model.

With reference to Fig. 1, alternately repeatedly put elementary 2 being fixed on the mandrel frame 1 of forming by coil windings 3 and iron core 4 for one, the 6th, hold-down nut, tighten up with mandrel frame 1 elementary 2 by guide pillar piece 7, the 5th, coil connects lead-in wire, in the illustrated example, be positioned at elementary two ends, on mandrel frame 1 and guide pillar piece 7, track-type facilities 8 has been installed respectively, this track-type facilities is the ball bearing guide bushing that is made of cylinder and the plurality of balls 15 that is embedded in barrel as shown in Figure 2, and secondary 9 of tubular type is enclosed within outside elementary 2, inner wall surface thereof is touched mutually with ball, is led along the axis moving linearly by ball.The secondary of cast can be as shown in Figure 3, is to be enclosed within the conductive tube 12 outer cast shapes that constitute by magnetic conductive cylinder 11, and as the iron copper-clad, the iron alclad also can be as shown in Figure 4, be by annular shape magnetic guiding cycle 13 and annular shape conductive ring 14 alternately repeatedly dress constitute.

Linear induction motor of the present utility model can be used three-phase alternating current, also can use single-phase alternating current, and the former realizes that by the mode that changes phase sequence the latter adopts the mode of phase shift to realize.After elementary coil windings energising, just can in the air gap between elementary and secondary, produce the air gap travelling-magnetic-field that moves along rectilinear direction, magnetic field mobile makes secondary generation induced current, the effect of induced current and air-gap field produces electromagnetic push, forms the linear relative movement between elementary, secondary.

The utility model proposes a kind of linear electric motors of new construction, expanded the extensive use of linear electric motors, the linear electric motors of this structure are specially adapted to produce the occasion of vertical displacement.

Claims

1. shell secondary pole type pipe-shape straight-line induction motor, comprise elementary [2] and secondary [9], elementary alternately repeatedly being put by coil windings [3] and iron core [4] forms, it is characterized in that elementary [2] are fixed on the mandrel frame [1], at least the one end is provided with the track-type facilities [8] of guiding secondary [9] motion at two ends that mandrel frame [1] is gone up elementary [2], secondary [9] of cast are enclosed within outside elementary [2], and inner wall surface thereof is touched mutually with track-type facilities [8].

2. by the described linear induction motor of claim 1, the track-type facilities [8] that it is characterized in that being installed on the mandrel frame [1] is the ball bearing guide bushing that is made of cylinder and the plurality of balls [15] that is embedded in barrel.

3. by the described linear induction motor of claim 1, it is characterized in that cast secondary be to be enclosed within the outer cast shape that constitutes of conductive tube [12] by magnetic conductive cylinder [11], or by annular shape magnetic guiding cycle [13] and annular shape conductive ring [14] dress formation repeatedly alternately.