CN201590744U - Electromagnetic hysteresis damper - Google Patents
Electromagnetic hysteresis damper Download PDFInfo
- Publication number
- CN201590744U CN201590744U CN2009202303554U CN200920230355U CN201590744U CN 201590744 U CN201590744 U CN 201590744U CN 2009202303554 U CN2009202303554 U CN 2009202303554U CN 200920230355 U CN200920230355 U CN 200920230355U CN 201590744 U CN201590744 U CN 201590744U
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- yoke
- pole piece
- damping
- magnetic sheet
- rotary body
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Abstract
The utility model discloses an electromagnetic hysteresis damper. A magnet yoke is internally provided with a fixed coil. The magnet yoke and a pole piece are arranged at one end of a shaft and an adjustable pad and a bearing are arranged at the other end. A rotating body is fixed on an outer ring of the bearing, and a damping magnetic sheet is fixed on the rotating body and can rotate around the shaft. A gap respectively exists between the damping magnetic sheet and the magnetic yoke as well as between the damping magnetic sheet and the pole piece. The damper is stable in damping torque and convenient in adjustment. When the damper is used for controlling yarn tension, the yarn tension can be accurately and rapidly adjusted according to technological requirements. The damper can also be applied to other fields.
Description
Technical field
The utility model relates to a kind of electromagnetic hysteresis damper that can impose damping torque to rotary body.
Background technology
Known a kind of one group of quantity of hysteresis damper (patent No. 200520098258.6) that can impose damping torque to rotary body is the permanent magnet of even number, it is trapezoidal or fan-shaped that the cross section is, N, S magnetic pole are arranged along circle alternate, one end of permanent magnet, with the adhesive of magnetic conduction disk, the other end of permanent magnet and be fixed between the damping magnetic sheet on the rotary body adjustable clearance is arranged, rotary body can pivot.The permanent magnet of this hysteresis damper influences magnetic and can fail some factor, and the magnetic hysteresis damping changes thereupon.
Summary of the invention
The purpose of this utility model is to provide a kind of damping torque stable, easy to adjust electromagnetic hysteresis damper.
The purpose of this utility model is achieved in that a kind of electromagnetic hysteresis damper, fixing coil is arranged in the yoke, yoke, pole piece is installed in an end of axle, the other end is equipped with adjusting pad, bearing, rotary body is fixed on the outer ring of bearing, the damping magnetic sheet is fixed on the rotary body, can pivot, damping magnetic sheet and yoke, gapped δ between the pole piece, it is some that the notch end outer ring of yoke is provided with battlement sample projection, and the circumferential edge of pole piece also is provided with projection, and quantity equates with yoke battlement sample number of slugs, the projection of yoke and pole piece staggers mutually and does not contact, and pole piece is positioned on the inner ring of yoke notch end.
Owing to adopt said structure, behind coil electricity, different N, the S utmost points of polarization on the Internal and external cycle of yoke, pole piece is positioned on the inner ring of yoke notch end, polarity on the pole piece projection is different with polarity on the outer ring, position, outer ring in yoke forms N, S, the staggered magnetic pole circle of N, S, on the damping magnetic sheet of δ, producing corresponding opposite polarity magnetic pole circle simultaneously, and attract each other, adjust size of current in the coil, just can change the damping torque of rotary body rotation, so the utility model damping torque is stable, easy to adjust.
Description of drawings
Be described further below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cutaway view of figure one.
Fig. 3 is the structural representation that the utility model is used for automatically controlled yarn tensioner.
Embodiment
As shown in Figure 1: a kind of electromagnetic hysteresis damper, fixing coil 3 is arranged in the yoke 2, yoke 2, pole piece 4 is installed in an end of axle 1, the other end is equipped with adjusting pad 6, bearing 7, rotary body 8 is fixed on the outer ring of bearing 7, damping magnetic sheet 5 is fixed on the rotary body 8, can be around axle 1 rotation, damping magnetic sheet 5 and yoke 2, gapped δ between the pole piece 4, it is some that the notch end outer ring of yoke 2 is provided with battlement sample projection, and the circumferential edge of pole piece 4 also is provided with some projections, and quantity equates with yoke 2 battlement sample number of slugs, the projection of yoke 2 and pole piece 4 staggers mutually and does not contact, and pole piece 4 is positioned on the inner ring of yoke 2 notch ends.
Behind coil electricity, different N, the S utmost points of polarization on the Internal and external cycle of yoke, pole piece is positioned on the inner ring of yoke notch end, polarity on the pole piece projection is different with polarity on the outer ring, form N, S, the staggered magnetic pole circle of N, S in the position, outer ring of yoke like this, on the damping magnetic sheet of δ, producing corresponding opposite polarity magnetic pole circle simultaneously, and attracting each other.The damping magnetic sheet is fixed on the rotary body, and rotary body will rotate, and will overcome magnetic force, changes the original position of magnetic pole on the damping magnetic sheet, has so just produced the damping torque that hinders the rotary body rotation.Adjust size of current in the coil, just can change the damping torque of rotary body rotation,
Fig. 3 is an automatically controlled yarn tensioner of embodiment of the present utility model, promptly loads onto yoke cover 9, wired dish 10, nut 11 on the rotary body 8 of Fig. 1, is used for textile industry yarn tension is controlled.
On twisting machine, automatically controlled yarn tensioner is fixed by axle 1 and frame, after coil 3 energisings, different N, the S utmost points of polarization on the Internal and external cycle of yoke 2, pole piece 4 is positioned on the inner ring of yoke notch end, so the polarity on pole piece 4 projections is different with polarity on the outer ring, forms the magnetic pole circle of N, S, N, S arrangement like this in the position, outer ring of yoke 2, on the damping magnetic sheet 5 of δ, producing corresponding opposite polarity magnetic pole circle simultaneously, and attracting each other.Damping magnetic sheet 5, wired dish 10 are fixed on the rotary body 8, yarn passes walk around certain length in two wired dishes 10 after, yarn will move, just rotation of rotary body 8, will overcome magnetic force, change the original position of magnetic pole on damping magnetic sheet 5, produce the damping torque that hinders rotary body 8 rotations like this, yarn in wired dish 10 moves and is obstructed, and has just obtained tension force on the traversing through end yarn.Adjust size of current in the coil 3, just can change traversing through end yarn tension size.
Claims (3)
1. electromagnetic hysteresis damper, it is characterized in that: fixing coil (3) is arranged in the yoke (2), yoke (2), pole piece (4) are installed in an end of axle (1), the other end is equipped with adjusting pad (6), bearing (7), rotary body (8) is fixed on the outer ring of bearing (7), damping magnetic sheet (5) is fixed on the rotary body (8), can be around axle (1) rotation, gapped δ between damping magnetic sheet (5) and yoke (2), the pole piece (4).
2. according to the described electromagnetic hysteresis damper of claim 1, it is characterized in that: it is some that the notch end outer ring of yoke (2) is provided with battlement sample projection, the circumferential edge of pole piece (4) also is provided with projection, quantity equates with yoke (2) battlement sample number of slugs, pole piece (4) is positioned on the inner ring of yoke (2) notch end, and the projection of yoke (2) and pole piece (4) staggers mutually and do not contact.
3. according to the described electromagnetic hysteresis damper of claim 1, it is characterized in that: rotary body (8) shape variable, can design different profiles according to difference in functionality with purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202303554U CN201590744U (en) | 2009-11-27 | 2009-11-27 | Electromagnetic hysteresis damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202303554U CN201590744U (en) | 2009-11-27 | 2009-11-27 | Electromagnetic hysteresis damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590744U true CN201590744U (en) | 2010-09-22 |
Family
ID=42750539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202303554U Expired - Fee Related CN201590744U (en) | 2009-11-27 | 2009-11-27 | Electromagnetic hysteresis damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590744U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI495232B (en) * | 2013-05-24 | 2015-08-01 | ||
| CN110217630A (en) * | 2019-06-05 | 2019-09-10 | 长江大学工程技术学院 | Tension damper |
| CN117948367A (en) * | 2024-03-25 | 2024-04-30 | 浙江大学 | Damping mechanism |
-
2009
- 2009-11-27 CN CN2009202303554U patent/CN201590744U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI495232B (en) * | 2013-05-24 | 2015-08-01 | ||
| CN110217630A (en) * | 2019-06-05 | 2019-09-10 | 长江大学工程技术学院 | Tension damper |
| CN117948367A (en) * | 2024-03-25 | 2024-04-30 | 浙江大学 | Damping mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |