CN104864026B - Compound type electromagnetic frcition damper - Google Patents
Compound type electromagnetic frcition damper Download PDFInfo
- Publication number
- CN104864026B CN104864026B CN201510175207.7A CN201510175207A CN104864026B CN 104864026 B CN104864026 B CN 104864026B CN 201510175207 A CN201510175207 A CN 201510175207A CN 104864026 B CN104864026 B CN 104864026B
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- China
- Prior art keywords
- friction plate
- electromagnet
- frcition damper
- type electromagnetic
- compound type
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of compound type electromagnetic frcition damper, the frcition damper includes electromagnet, friction plate, butterfly spring, frictional force adjustment bolt, extruding conical ring, circle outer barrel, backstop cylinder, sliding bar, controller, sensor, end casing, fixing nut and plug connections, circle outer barrel inner side sets friction plate, friction plate be by the cylinder polylith arc that straight joint is split to form vertically, and arc both ends prolong axial cross section be certain slope oblique section；Friction plate end both sides are set and extrude conical ring and butterfly spring with its gradient identical, and outermost frictional force adjustment bolt is connected by screw thread with end casing.Using electromagnet in the case of energization, the size according to slide displacement produces corresponding electromagnetic attraction to the present invention between electromagnet and friction plate, therefore and realizes becoming friction；The pressure between friction plate and electromagnet can also be changed simultaneously, so as to change the size that damper plays sliding power.
Description
Technical field
The present invention relates to Structural Engineering field, it is more particularly to a kind of by electromagnet-friction with conventional friction be combined it is compound
Type frcition damper, is installed in engineering structure resisting the dynamic actions such as high wind, earthquake.
Background technology
In order to mitigate the vibratory response of structure and equipment, can energy-consumption shock-absorption device be arranged in structure and equipment to consume
The energy of Seismic input, to mitigate the harm that vibration comes to structure and equipment belt.The energy-consumption shock-absorption device kind for researching and developing at present
Class is more, can be divided into lower class by the difference of its Energy Dissipation Mechanism：Viscoelastic damper, viscous damper, metal damper and
Frcition damper.
Frcition damper is a kind of a kind of energy-consumption shock-absorption device of the friction energy-dissipating consumption vibrational energy of utilization rubbing surface, because
Its energy dissipation capacity is strong, and load, frequency are little to its performance impact, and simple structure, and materials are easy, cheap, thus
With good application prospect.The research of frcition damper starts from late 1970s, is then built for adaptation is different types of
Building structure, domestic and foreign scholars have developed various frcition dampers successively.The major defect of general conventional friction damper is
The size of damper precompression in sliding process can not change automatically, thus its provide frictional force also generally protect
Hold constant, close to rectangle, such frcition damper cannot be according to structural vibration load action intensity for the hysteresis loop of damper
Size and change the size of frictional force in real time so that the too early sliding or non-sliding of frcition damper so that according to severe earthquake action
The damper of lower design is never slided under weak shock effect, and according to the damper of the lower design of weak shock effect in severe earthquake action
Under will not reach preferable effectiveness in vibration suppression because of exerting oneself too small.
The content of the invention
The technical problems to be solved by the invention are：The compound electricity that a kind of electromagnet-friction is combined with conventional friction is provided
Magnetic friction damper, the frictional force that the damper is provided by conventional friction part controls the size of sliding power damper, to prevent
Frcition damper crosses getting up early cunning or does not play cunning；Change friction portion is provided with change in displacement by electromagnet and mutually strain frictional force, with
Meet the requirement that structure damper in large deformation exports big frictional force.
The present invention solves its technical problem and uses following technical scheme：
The present invention is to provide the composite friction damper that a kind of conventional friction is combined with electromagnet-friction, the frictional damping
Device includes electromagnet, friction plate, disk spring, frictional force adjustment bolt, extruding conical ring, circle outer barrel, backstop cylinder, slip
Axle, controller, sensor, end casing, fixing nut and plug connections, wherein,
Described electromagnet forms closed magnetic loop with friction plate；
Described electromagnet is made up of magnetic conductor and coil windings；
Described friction plate be by cylinder by the polylith arc of straight joint even partition in the axial direction, it is adjacent
Interval identical straight joint is provided between the radial section of arc；Section is with certain angle vertically outside arc two ends
The oblique section of degree, its internal diameter is identical with magnetic conductor external diameter, and external diameter is identical with circle outer barrel internal diameter；Also, the inner surface of friction plate with
The outer surface contact of magnetic conductor；
Described friction plate both ends set extruding conical ring, and extruding conical ring is ring-type cone, the gradient of its intrados with rub
The gradient of the oblique section at wiping board both ends is identical, and intrados is in contact with friction plate both ends oblique section；
Described frictional force adjustment bolt is connected by screw thread with end casing；
The outside of described extruding conical ring and circle outer barrel inner side between be provided with backstop cylinder, its external diameter with circle outer barrel
Internal diameter it is identical；Its two ends contacts with end casing and friction plate respectively.
Further, end casing is respectively arranged with the two ends of described round outer barrel, has end in the middle setting of end casing
Lid screwed hole, frictional force adjustment bolt is connected by the screw thread on end casing with end casing；Described sliding axle passes through side
Frictional force adjustment bolt.
Further, described extruding conical ring is more than the side away from electromagnet in the internal diameter near the side of electromagnet,
Described crush cones ring set is connected on the oblique section outside at friction plate both ends.
Further, described disk spring is arranged between frictional force adjustment bolt and extruding conical ring, is used to extruding
Conical ring applies the oblique section at extruding force and extrusion friction plate two ends, makes to produce pressure between friction plate and magnetic conductor.
Further, described controller is connected with sensor and coil windings respectively by data wire.
Further, described electromagnet fixing nut is fixed on sliding axle, and the center section of magnetic conductor sets logical
Hole, sliding axle passes through the through hole, also, is respectively provided with fixing nut on the sliding axle at the two ends of magnetic conductor, in sliding axle
End is provided with plug connections.
Further, shoulder is respectively provided with the two ends of the friction plate, is described oblique section in the outside of shoulder.
Further, the electromagnet is that I-shaped magnetic conductor and coil are constituted by axial cross section.
Further, the magnetic conductor, friction plate are made up of permeability magnetic material, and circle outer barrel is made of non-magnet_conductible material.
Further, described controller includes displacement, acceleration collecting unit, and be converted into for the electric signal of sensor by it
Data signal；Embedded draught control unit, it controls damping force size according to control algolithm；Over-voltage over-current protection unit,
It is protected by whole controller；PWM constant-current power amplifying units；Aforementioned four unit is connected with each other with electric signal successively.
The present invention has following major advantage：
The one dampers increase electromagnet-friction part on the basis of conventional friction damper, damper is entered
Row feedback control, effectively improves damper energy dissipation capacity.
Even if secondly the dampers under powering-off state, still carry out friction energy-dissipating using conventional friction part, increased
Reliability when damper works.
Thirdly the dampers are in installation process, the need for engineer can be according to Practical Project, by regulating friction force
Power is slided in rising for adjustment bolt regulation damper, increased the flexibility that damper is used.
Brief description of the drawings
Fig. 1 is the structural representation of composite friction damper of the present invention.
Fig. 2 is the A-A profiles of Fig. 1；
Fig. 3 is the B-B profiles of Fig. 1；
Fig. 4 is magnetic conductor front elevation view and side elevational view；
Fig. 5 is extruding circular cone ring front elevation view and side elevational view.
In figure：1-1. magnetic conductors；1-2. coil windings；2. friction plate；3. disk spring；4. frictional force adjustment bolt；5.
Extruding conical ring；6. outer barrel is justified；7. backstop cylinder；8. sliding axle；9. controller；10. sensor；11. end casings；12. fix spiral shell
Female 13. plug connections；14. straight joints.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described, but does not limit the present invention.
The compound type electromagnetic frcition damper that the present invention is provided, its structure is as shown in Figure 1 to Figure 3：Including electromagnet, friction
Plate 2, disk spring 3, frictional force adjustment bolt 4, extruding conical ring 5, circle outer barrel 6, backstop cylinder 7, sliding axle 8, controller 9, biography
Sensor 10, end casing 11, fixing bolt 12, plug connections 13.
Wherein：Electromagnet is made up of magnetic conductor 1-1 (such as Fig. 4) and coil windings 1-2, described electromagnet fixing nut
12 are fixed on sliding axle 8, and in the present embodiment, the center section of magnetic conductor 1-1 sets through hole, and sliding axle 8 passes through the through hole,
Also, fixing nut 12 is respectively provided with the sliding axle 8 at the two ends of magnetic conductor 1-1, the end of sliding axle 8 is provided with latch
Connector 13.The electromagnet is that I-shaped magnetic conductor and coil are constituted by axial cross section.
Described friction plate 2 is by the polylith arc of the even partition of straight joint 14 in the axial direction, phase by cylinder
It is provided between the radial section of adjacent arc and is spaced identical straight joint 14；Outside arc two ends vertically section be with
The oblique section of certain angle, its internal diameter is identical with magnetic conductor 1-1 external diameters, and external diameter is identical such as Fig. 1 to Fig. 3 institutes with the circle internal diameter of outer barrel 6
Show；Also, the inner surface of friction plate 2 is contacted with the outer surface of magnetic conductor 1-1.Shoulder is respectively provided with the two ends of the friction plate 2
It is prominent, it is described oblique section in the outside of shoulder.
Electromagnet and friction plate 2 form complete closed magnetic loop, and magnetic energy input is provided by coil windings 1-2, lead to
Cross the electric current changed in coil and change the induction level in magnetic loop.
End casing 11 is respectively arranged with the two ends of circle outer barrel 6, has end cap screwed hole in the middle setting of end casing 11, rubbed
Power adjustment bolt 4 is wiped to be connected with end casing 11 by the screw thread on end casing 11.Frictional force of the described sliding axle 8 through side
Adjustment bolt 4.
In this embodiment, extruding conical ring 5 is ring-type cone (as shown in Figure 5), the gradient and the friction plate two ends of its intrados
The gradient of the oblique section in portion is identical, and intrados is in contact with friction plate both ends oblique section, and extruding conical ring 5 is near electromagnetism
The internal diameter of the side of iron is more than the side away from electromagnet, therefore, described extruding conical ring 5 is socketed in the oblique of friction plate both ends
Section outside.
Backstop cylinder 7 is provided between the inner side of the outside of described extruding conical ring 5 and circle outer barrel 6, its external diameter and circle
The internal diameter of outer barrel is identical；Its two ends contacts with end casing 11 and friction plate 2 respectively.
Described disk spring 3 is arranged between frictional force adjustment bolt 4 and extruding conical ring 5, is used to apply extruding conical ring 5
Plus the oblique section at extruding force and the two ends of extrusion friction plate 2, make to produce pressure between friction plate 2 and magnetic conductor 1-1, so that damping
Device produces frictional force.
In the present embodiment, controller 9 is connected with sensor 10 and coil windings 1-2 respectively by data wire.
The magnetic conductor 1-1, friction plate 2 can be made up of permeability magnetic material (silicon steel, magnetic alloy, mild steel), circle outer barrel 6
It is made of non-magnet_conductible material (copper, stainless steel), other components do not make specific requirement.The sectional dimension of magnetic conductor and friction plate
Thickness should all draw the physical dimension of optimization using Finite Element Magnetic Field Analysis so that be reached by the magnetic induction intensity of magnetic loop
It is maximum.
The controller 9 can be made up of the following units：Displacement, acceleration collecting unit, it can be by the electric signal of sensor
It is converted into data signal；Embedded draught control unit, it can control damping force size according to control algolithm；Over-voltage and over-current
Protection location, it can be protected by whole controller；PWM constant-current power amplifying units, it may ensure that controller is steady
It is qualitative.This four units are connected with each other with electric signal successively.
The effect of the sensor 10 is exactly the vibratory response for gathering external structure, and the sensor can be sensed using conventional
Device, such as displacement transducer, velocity sensor, acceleration transducer, optical pickocff etc..
The course of work of brief description damper of the present invention.
In the case of only alive, the Vibration Condition by sensor 10 come perceptual structure under outside dynamic action,
Dynamic response signal input to controller 9, controller 9 can be sent control signal by sensor 10 according to corresponding control strategy
Change the electric current in coil windings 1-2, so as to change the magnetic induction intensity of magnetic conductor 1-1 and friction plate 2.So, magnetic conductor 1-1
Change therewith with the electromagnetic attraction at the contact surface of friction plate 2, so that the frictional force of damper can be controlled.
In the case where obstructed electric current is only the frictional force adjustment bolt 4 for adjusting damper two ends, extruding conical ring 5 because
By disk spring 3 power and the oblique section at the two ends of extrusion friction plate 2, make to produce pressure between friction plate 2 and magnetic conductor 1-1,
So that damper produces frictional force.
While being alived in coil windings 1-2, designer needs also dependent on concrete engineering, adjusts damper two
The frictional force adjustment bolt 4 at end plays sliding power change damper, makes electromagnet-friction and conventional friction cooperation.In this situation
Under, even if being powered off, damper still can carry out friction energy-dissipating under the frictional force of designer's setting, increased damper work
Reliability.
Claims (10)
1. a kind of compound type electromagnetic-frcition damper, it is characterised in that a kind of its electromagnet-friction is combined with conventional friction
Compound frcition damper, the frcition damper includes electromagnet, friction plate, disk spring, frictional force adjustment bolt, extruding
Conical ring, circle outer barrel, backstop cylinder, sliding axle, controller, sensor, end casing, fixing nut and plug connections, wherein,
Described electromagnet forms closed magnetic loop with friction plate；
Described electromagnet is made up of magnetic conductor and coil windings；
Described friction plate is by the polylith arc of straight joint even partition in the axial direction, adjacent arc by cylinder
Interval identical straight joint is provided between the radial section of plate；Section is with certain angle vertically outside arc two ends
Oblique section, its internal diameter is identical with magnetic conductor external diameter, and external diameter is identical with circle outer barrel internal diameter；Also, the inner surface and magnetic conduction of friction plate
The outer surface contact of body；
Described friction plate both ends set extruding conical ring, and extruding conical ring is ring-type cone, the gradient and friction plate of its intrados
The gradient of the oblique section at both ends is identical, and intrados is in contact with friction plate both ends oblique section；
Described frictional force adjustment bolt is connected by screw thread with end casing；
Backstop cylinder is provided between the inner side of the outside of described extruding conical ring and circle outer barrel, its external diameter is interior with circle outer barrel
Footpath is identical；Its two ends contacts with end casing and friction plate respectively.
2. compound type electromagnetic-frcition damper according to claim 1, it is characterised in that the two of described round outer barrel
End is respectively arranged with end casing, has end cap screwed hole in the middle setting of end casing, and frictional force adjustment bolt is by end casing
Screw thread be connected with end casing；Frictional force adjustment bolt of the described sliding axle through side.
3. compound type electromagnetic-frcition damper according to claim 2, it is characterised in that described extruding conical ring is being leaned on
More than the side away from electromagnet, described crush cones ring set is connected on the oblique of friction plate both ends to the internal diameter of the side of nearly electromagnet
Section outside.
4. compound type electromagnetic-frcition damper according to claim 2, it is characterised in that described disk spring is set
Between frictional force adjustment bolt and extruding conical ring, it is used to apply extruding conical ring the bevel at extruding force and extrusion friction plate two ends
Face, makes to produce pressure between friction plate and magnetic conductor.
5. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that described controller is by number
It is connected with sensor and coil windings respectively according to line.
6. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that described electromagnet is fixed
Nut is fixed on sliding axle, and the center section of magnetic conductor sets through hole, and sliding axle passes through the through hole, also, in magnetic conductor
Fixing nut is respectively provided with the sliding axle at two ends, plug connections are provided with the tip of the axis is slided.
7. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that at the two ends of the friction plate
Shoulder is respectively provided with, is described oblique section in the outside of shoulder.
8. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that the electromagnet is by axial direction
Section is I-shaped magnetic conductor and coil composition.
9. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that the magnetic conductor, friction plate by
Permeability magnetic material is made, and circle outer barrel is made of non-magnet_conductible material.
10. compound type electromagnetic-frcition damper according to claim 4, it is characterised in that described controller includes position
Shifting, acceleration collecting unit, the electric signal of sensor is converted into data signal by it；Embedded draught control unit, its basis
Control algolithm controls damping force size；Over-voltage over-current protection unit, it is protected by whole controller；PWM constant-current powers
Amplifying unit；Aforementioned four unit is connected with each other with electric signal successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175207.7A CN104864026B (en) | 2015-04-15 | 2015-04-15 | Compound type electromagnetic frcition damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175207.7A CN104864026B (en) | 2015-04-15 | 2015-04-15 | Compound type electromagnetic frcition damper |
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| Publication Number | Publication Date |
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| CN104864026A CN104864026A (en) | 2015-08-26 |
| CN104864026B true CN104864026B (en) | 2017-06-20 |
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| CN201510175207.7A Expired - Fee Related CN104864026B (en) | 2015-04-15 | 2015-04-15 | Compound type electromagnetic frcition damper |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465270B (en) * | 2015-12-28 | 2017-06-30 | 东北大学 | One kind friction Electromagnetic heating damping intelligent vibration isolator system and method for testing vibration |
| CN108930133A (en) * | 2017-05-24 | 2018-12-04 | 青岛海尔洗衣机有限公司 | Use in washing machine hanger rod component and rotary drum washing machine |
| CN110195763A (en) * | 2018-02-25 | 2019-09-03 | 劳漠雨 | A kind of car electromagnetic damper |
| CN110056591A (en) * | 2019-04-25 | 2019-07-26 | 武汉理工大学 | A kind of linear displacement becomes friction and electromagnetism variation rigidity composite damper |
| CN113237627B (en) * | 2021-06-08 | 2023-04-25 | 沈阳工业大学 | Dual-wave impact amplifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420969A (en) * | 2000-03-29 | 2003-05-28 | 洛德公司 | Magnetically controlled friction damper |
| CN101216088A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Barrel-type friction-changing damper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3796288A (en) * | 1972-10-10 | 1974-03-12 | H Hollnagel | One or two way energy (shock) absorber |
| DE3041937A1 (en) * | 1980-11-06 | 1982-05-27 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | TUBULAR FRICTION SHOCK ABSORBER |
| CN101435477A (en) * | 2007-11-14 | 2009-05-20 | 黄潭城 | Damping structure |
| CN103291797B (en) * | 2013-03-15 | 2016-01-20 | 尹学军 | A kind of frcition damper |
| CN104482108B (en) * | 2014-12-05 | 2016-03-02 | 国家电网公司 | A kind of centring type friction damper for pillar class electrical equipment |
-
2015
- 2015-04-15 CN CN201510175207.7A patent/CN104864026B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420969A (en) * | 2000-03-29 | 2003-05-28 | 洛德公司 | Magnetically controlled friction damper |
| CN101216088A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Barrel-type friction-changing damper |
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| CN104864026A (en) | 2015-08-26 |
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Granted publication date: 20170620 Termination date: 20210415 |