CN201536064U

CN201536064U - Permanent-magnet operating mechanism

Info

Publication number: CN201536064U
Application number: CN200920237952XU
Authority: CN
Inventors: 唐杰; 李松乔; 卢进
Original assignee: ZHUHAI FANGXIN ELECTRICAL CO Ltd
Current assignee: ZHUHAI FANGXIN ELECTRICAL CO Ltd
Priority date: 2009-10-27
Filing date: 2009-10-27
Publication date: 2010-07-28
Anticipated expiration: 2019-10-27

Abstract

The utility model discloses a permanent-magnet operating mechanism which comprises a supporting stand, a first static iron core, a second static iron core, a moving iron core, a permanent magnet, a guide bar and an excitation coil, wherein the first static iron core and the second static iron core are fixed in the supporting stand, the permanent magnet is positioned between the first static iron core and the second static iron core, the excitation coil is installed on the outer end of the second static iron core, the guide bar penetrates through the first static iron core, the second static iron core and the middle portion of the permanent magnet, and the sheet-like round moving iron core is fixed on one end of the guide bar and located on the front end of an opening air gap of the second static iron core. The rear end of the moving iron core is provided with another group of a first static iron core, a second static iron core and a permanent magnet, wherein the outer end of the second static iron core is provided with a demagnetizing coil. The permanent-magnet operating mechanism has simple structure and quite convenient processing, and the mass of the moving iron core is light, thereby the generated impact force is small, furthermore, motion elements can not be contacted with the permanent magnet, the confining force is large, and the movement is stable.

Description

A kind of permanent-magnet manipulating mechanism

Technical field:

The utility model relates to the electromagnetic operating mechanism of device for switching, especially relates to the electromagnetic operating mechanism that remains on combined floodgate and two service positions of separating brake by permanent magnet.

Background technology:

For actuating device for switching reliably is installed, for a long time, people have researched and developed moving iron core miscellaneous and have done straight-line electromagnetic operating mechanism.The appearance of high ferromagnetic permanent magnet (as neodymium iron boron type), quickened greatly to rely on permanent magnet to remain on the development of the electromagnetic operating mechanism of combined floodgate and two service positions of separating brake, device for switching is greatly simplified at the position holding device of combined floodgate, sub-switching operation, the component number of action obviously reduces, thereby reliability also greatly improves.But existing moving iron core is done the straight-line electromagnetic operating mechanism part that also comes with some shortcomings, and the precision of two ends positioning requirements is very high up and down mainly to show moving iron core, brings difficulty to processing; Otherwise moving iron core moves up and down and is obstructed, and needs to increase the Electromagnetically-operating merit; The coefficient of friction of the guider of moving iron core increases simultaneously, shortens the operation lifetime of mechanism, and after particularly moving iron core and permanent magnet contacts excessive wear, the precision of two ends positioning requirements obviously reduces, and makes operating mechanism can not satisfy the performance requirement of device for switching.

Practical content:

The purpose of this utility model is to provide a kind of new permanent-magnet manipulating mechanism, and it has the advantages that processing is simple, impulsive force is little, confining force is big, action is stable.

For achieving the above object, one of permanent-magnet manipulating mechanism of the present utility model includes support, first static iron core, second static iron core, moving iron core, permanent magnet, guide post, magnet exciting coil, wherein, first static iron core and second static iron core are fixed in the support, permanent magnet is between first static iron core and second static iron core, magnet exciting coil is installed in the second static iron core outer end, guide post passes first static iron core, second static iron core and permanent magnet middle part, the moving iron core of the circle of sheet is fixed on guide post one end, and is positioned at the front end of the second static iron core opening air gap; Also be provided with another in moving iron core rear end and organize first static iron core, second static iron core, permanent magnet, wherein, the second static iron core outer end is equipped with the magnetic coil of dispelling, and this is organized last group first static iron core, second static iron core, the permanent magnet that first static iron core, second static iron core, permanent magnet and guide post pass and is symmetrically distributed in support.

Another kind of permanent-magnet manipulating mechanism of the present utility model includes support, first static iron core, second static iron core, moving iron core, permanent magnet, guide post, magnet exciting coil, wherein, first static iron core and second static iron core are fixed in the support, permanent magnet is between first static iron core and second static iron core, magnet exciting coil is installed in the second static iron core outer end, guide post passes first static iron core, second static iron core and permanent magnet middle part, the moving iron core of the circle of sheet is fixed on guide post one end, and is positioned at the front end of the second static iron core opening air gap; Be arranged with tripping spring in position, moving iron core upper end on the guide post.

The beneficial effects of the utility model are: it is simple in structure, and it is comparatively convenient to process, the light weight of moving iron core, and the impulsive force of generation is little; In addition, movement parts can not contact permanent magnet, and confining force is big, action is stable.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the structural representation of the utility model embodiment two.

Embodiment:

The following stated only is preferred embodiment of the present utility model, does not therefore limit protection range of the present utility model.

See shown in the accompanying drawing 1: permanent-magnet manipulating mechanism of the present utility model includes cylindric support 10, first static iron core 20, second static iron core 30, moving iron core 40, permanent magnet 50, guide post 60, magnet exciting coil 70, wherein, first static iron core 20 and second static iron core 30 are fixed in the support 10, permanent magnet 50 is between first static iron core 20 and second static iron core 30, magnet exciting coil 70 is installed in second static iron core, 30 outer ends, guide post 60 passes first static iron core 20, second static iron core 30, and permanent magnet 50 middle parts, the moving iron core 40 of the circle of sheet is fixed on guide post 60 1 ends, and is positioned at the front end of second static iron core, 30 opening air gaps; In addition, also be provided with another in moving iron core 40 rear ends and organize first static iron core 21, second static iron core 31, permanent magnet 51, wherein, second static iron core, 31 outer ends are equipped with the magnetic coil 80 of dispelling, and this is organized first static iron core 21, second static iron core 31, permanent magnet 51 and is symmetrically distributed in support 10 with last group first static iron core 20, second static iron core 30, the permanent magnet 50 that guide post 60 passes.

When closing operation, magnet exciting coil 70 and dispel magnetic coil 80 energising excitations and energising degaussing, moving iron core 40 is led by guide post 60 under the effect of excitation power, move upward and finish closing operation, and will move iron core 40 by the magnetic field suction that the permanent magnet 50 that is installed between support 10 upper ends, first static iron core 20 and second static iron core 30 produces and remain on closing position.During sub-switching operation, magnet exciting coil 70 and dispel magnetic coil 80 energising degaussings and energising excitation, moving iron core 40 is moved downward by guide post 60 guiding under the effect of excitation power, and the magnetic field suction that is produced by the permanent magnet between first static iron core 21 that is installed in support 10 lower ends and second static iron core 31 will move iron core 40 and remain on the separating brake position at last.Certainly, also can as required said structure be changed into downwards for closing a floodgate, upwards be separating brake.

See the embodiment two shown in the accompanying drawing 2, in this embodiment, permanent-magnet manipulating mechanism includes cylindric support 10, first static iron core 20, second static iron core 30, moving iron core 40, permanent magnet 50, guide post 60, magnet exciting coil 70, wherein, first static iron core 20 and second static iron core 30 are fixed in the support 10, permanent magnet 50 is between first static iron core 20 and second static iron core 30, magnet exciting coil 70 is installed in second static iron core, 30 outer ends, guide post 60 passes first static iron core 20, second static iron core 30, and permanent magnet 50 middle parts, the moving iron core 40 of the circle of sheet is fixed on guide post 60 1 ends, and is positioned at the front end of second static iron core, 30 opening air gaps; Be arranged with tripping spring 90 in position, moving iron core 40 upper end on the guide post 60.

Moving iron core 40 produces under the electromagnetic attraction effect in magnet exciting coil 70 energisings and moves, and compress tripping spring 90 simultaneously and finish closing operation, produce the magnetic field suction and will move iron core 40 and remain on closing position by being installed in permanent magnet 50 between first static iron core 20 and second static iron core 30; Moving iron core 40 is in magnet exciting coil 70 logical reverse current degaussings, the suction of first

static iron core

20 and 30 pairs of moving iron cores 40 of second static iron core sharply reduces, to move iron core 40 by the counter-force of tripping spring 90 and be pushed into the separating brake position, and remain on the separating brake position by the starting force of tripping spring 90.

Claims

1. permanent-magnet manipulating mechanism, include support, first static iron core, second static iron core, moving iron core, permanent magnet, guide post, magnet exciting coil, it is characterized in that: first static iron core and second static iron core are fixed in the support, permanent magnet is between first static iron core and second static iron core, magnet exciting coil is installed in the second static iron core outer end, guide post passes first static iron core, second static iron core and permanent magnet middle part, the moving iron core of the circle of sheet is fixed on guide post one end, and is positioned at the front end of the second static iron core opening air gap; Also be provided with another in moving iron core rear end and organize first static iron core, second static iron core, permanent magnet, wherein, the second static iron core outer end is equipped with the magnetic coil of dispelling, and this is organized last group first static iron core, second static iron core, the permanent magnet that first static iron core, second static iron core, permanent magnet and guide post pass and is symmetrically distributed in support.

2. permanent-magnet manipulating mechanism, include support, first static iron core, second static iron core, moving iron core, permanent magnet, guide post, magnet exciting coil, it is characterized in that: first static iron core and second static iron core are fixed in the support, permanent magnet is between first static iron core and second static iron core, magnet exciting coil is installed in the second static iron core outer end, guide post passes first static iron core, second static iron core and permanent magnet middle part, the moving iron core of the circle of sheet is fixed on guide post one end, and is positioned at the front end of the second static iron core opening air gap; Be arranged with tripping spring in position, moving iron core upper end on the guide post.