CN205745096U - A kind of two-freedom torsional vibration damper - Google Patents
A kind of two-freedom torsional vibration damper Download PDFInfo
- Publication number
- CN205745096U CN205745096U CN201620407250.1U CN201620407250U CN205745096U CN 205745096 U CN205745096 U CN 205745096U CN 201620407250 U CN201620407250 U CN 201620407250U CN 205745096 U CN205745096 U CN 205745096U
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- mover
- stator
- tooth
- wall
- coil
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Abstract
nullThe purpose of this utility model is to provide a kind of two-freedom torsional vibration damper，Including stator、First mover、Second mover、Permanent magnet，First mover is cylindrical structure，Second mover and stator are the cylindrical structure of hollow，The first mover axle it is fixed with on first mover，Stator axis it is fixed with on stator，The two ends of the first mover axle extend out to the outside of first two ends of mover respectively，The two ends of stator axis extend out to the outside of two ends of stator respectively，Stator is arranged on inside the second mover，First mover is arranged on stator interior，Matched by bearing and the second mover respectively in the two ends of stator axis，Match with stator respectively in the two ends of the first mover axle，Permanent magnet is arranged in stator，All offer on the outer wall of stator and inwall and put coil groove，In the coil groove of outer wall, first coil is set，In the coil groove of inwall, the second coil is set.This utility model is capable of controlling fundamental frequency and two frequencies of frequency multiplication simultaneously.
Description
Technical field
The utility model relates to a kind of vibration absorber, specifically device for damping torsional vibration.
Background technology
The power output of the dynamic power machines such as diesel engine and transmission be unable to do without various shaft elements, its twisting vibration
Being one of the principal vibration noise source of the apparatus of transport such as boats and ships, automobile, its harm is also well-known.
In order to effectively suppress twisting vibration, people have carried out substantial amounts of research for a long time.
In the patent application document of Application No. 88107926.X, it is provided that a kind of electromagnetic type spring rate is continuous
Adjustable method for vibration and dashpot.This dashpot includes mechanical spring and electromagnetic spring, and its electromagnetic spring is by fixed
Son, mover and magnet exciting coil composition, stator, mover working surface on the facewidth, tooth pitch and the number of teeth are distributed
Identical rectangle gear ring, stays an air gap, stator to be fixedly connected with by weakening object, and lead between working surface
Cross bearing and mechanical spring movably to couple with mover composition.When on the stator and mover working surface of electromagnetic spring
Gear ring axially distributed, mechanical spring use torsion spring time, can be used for eliminate twisting vibration.
In the patent application document of Application No. 201110191102.2, it is provided that a kind of torsional vibration damper
Device, it includes the cavity that housing and the cover plate of case weld sealing, housing surround with cover plate, is positioned at cavity
In the coasting body with at least one annular groove, fill in described cavity volume and the groove of described coasting body
In damping-article and at least one Limit Bearing between described coasting body and described cavity volume, the of housing
End face is stress end face, and the second end face is non-stress end face, and the second end face is the combination of cover plate and housing
Position, housing uses spinning monolithic molding, has that rigidity is strong, compact conformation and a working (machining) efficiency advantages of higher.
In the patent application document of Application No. 201410435114.9, it is provided that a kind of truck drive shaft reverses
Vibroshock.Including inner frame, inertia rings, outer ring, centering limit element and block rubber, its inner frame passes through
Bolt assembly is connected with driving shaft flange, at the inner frame lateral wall uniform block rubber of circumference, block rubber side sulfur
Changing and be fixed on the lateral wall of inner frame, opposite side sulfuration is fixed on the inwall of outer ring, and outer ring sleeve is contained in internal skeleton
The outside of frame, press-fits inertia rings on the inwall of two ends, outer ring, and centering limit element is distributed on outer ring and inner frame
Between cavity in.Fragile for solving existing torsional vibration damper Elastic connector, bulk life time is short
Problem.
Above-mentioned patent is both for the control of single-frequency vibration, and the vibration of most dynamic power machine is generally in again
Frequently relation, the vibration of second-order natural frequency is the biggest, needs to control with first natural frequency simultaneously.
Summary of the invention
The purpose of this utility model is to provide be capable of simultaneously controlling fundamental frequency and two frequencies of frequency multiplication one
Plant two-freedom torsional vibration damper.
The purpose of this utility model is achieved in that
This utility model one two-freedom torsional vibration damper, is characterized in that: include stator, first move
Son, the second mover, permanent magnet, described first mover is cylindrical structure, and described second mover and stator are
The cylindrical structure of hollow, the first mover is fixed with the first mover axle, stator is fixed with stator axis, the
The two ends of one mover axle extend out to the outside of first two ends of mover respectively, and the two ends of stator axis are stretched out respectively
To the outside of two ends of stator, stator is arranged on inside the second mover, and the first mover is arranged on stator interior,
Matched by bearing and the second mover respectively in the two ends of stator axis, the two ends of the first mover axle respectively with stator
Matching, permanent magnet is arranged in stator, the outer wall of stator and inwall is all offered and puts coil groove, outer wall
Arranging first coil in coil groove, arrange the second coil in the coil groove of inwall, the position of permanent magnet is positioned at
Between one coil and the second coil.
This utility model can also include:
1, it is provided with edge on the inwall of the inwall of stator, outer wall and the outer wall of the first mover, the second mover
The tooth of even circumferential distribution, the tooth of stator outer wall and the position one_to_one corresponding of the tooth of the second mover inwall, stator
The tooth of inwall and the position one_to_one corresponding of the tooth of the first mover outer wall.
2, leave working gas gap between tooth and the tooth of the second mover inwall of stator outer wall, the tooth of stator inner wall with
Working gas gap is left between the tooth of the first mover outer wall.
Advantage of the present utility model is: this utility model is by changing the electric current of two magnet exciting coils, permissible
Follow the tracks of fundamental frequency and two torsion frequencies of frequency multiplication, it is achieved having of the twisting vibration of fundamental frequency and two frequencies of frequency multiplication simultaneously
Effect controls；Equipped with annular permanent magnet on stator, one can be produced under the cold initial situation of coil
The magnetic field of sizing, it is ensured that time initial, tooth on stator tooth and two movers is in aligned condition, it is to avoid adopt
The problem making structure complicated with mechanical alignment parts or to use coil electricity alignment to cause energy dissipation.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model；
Fig. 2 is the A-A view of Fig. 1.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and this utility model be described in more detail:
In conjunction with Fig. 1～2, the present embodiment include stator 1, location nut 2, stator axis 3, the first mover axle
4, the second mover 5, permanent magnet 6, first coil the 7, second coil the 8, second bearing 9, clutch shaft bearing 10,
First mover 11 parts such as grade, the first mover axle 4 and the first mover 11 are connected, and pass through clutch shaft bearing 10
Being connected with stator 1, stator axis 3 is connected with stator 1, and is connected with the second mover 5 by the second bearing 9,
Stator axis 3 two ends are equipped with location nut 2, and the outside of stator 1 and inner side all have coil groove, be respectively provided with
First coil 7 and the second coil 8, stator 1 is also equipped with annular permanent magnet 6.
It is all provided with on the surfaces externally and internally of described stator, on the outer surface of the first mover and on the inner surface of the second mover
Have the most equally distributed tooth, and on stator outer surface with the tooth one_to_one corresponding on the second mover inner surface,
With the tooth one_to_one corresponding on the first mover outer surface on stator inner surface.
Between cog on tooth on described first mover and stator inner surface, the tooth on the second mover and stator appearance
Between cog on face all leaves a certain size working gas gap.
Described location nut is for ensureing that the second mover relative stator does not moves axially.
Described first mover, the second mover and stator all use electrical pure iron DT4, and other parts all use non-
Permeability magnetic material.
In real work, stator axis is connected with the axle needing vibration damping, when the axle needing vibration damping twists vibration,
Stator vibrates together with this axle, and the first mover and the second mover are due to the existence of inertia, its motion delay in
Stator, thus two produce relative rotation between mover and stator, make corresponding between cog deviate.
After magnet exciting coil is energized, between stator and two movers, produce magnetic pull, the size of magnetic pull, side
To relevant with the offset direction between stator, mover, deviation distance, the effect of magnetic pull is to eliminate bias,
Make stator, mover return to aligned position, i.e. form electromagnetic spring.
If the rotary inertia of the first mover is I1, the ELECTROMAGNETIC STIFFNESS between it and stator is k1；Turning of second mover
Dynamic inertia is I2, and the ELECTROMAGNETIC STIFFNESS between it and stator is k2.For the first rank natural frequency ω 1 and second-order
Natural frequency ω 2, can be obtained by the computing formula of natural frequency:
By the electric current in two magnet exciting coils of regulation, two ELECTROMAGNETIC STIFFNESS between mover and stator can be changed；
By changing quality or the radius of gyration of two movers, the rotary inertia of correspondence can be changed.
For fundamental frequency and the vibration of two frequencies of frequency multiplication, have:
ω2=2 ω1
Owing to the rotary inertia of stator is determined by the structural parameters of amortisseur, cannot change after designing,
Therefore in order to control fundamental frequency and the vibration of two frequencies of frequency multiplication simultaneously, need to control the electric current of two coils, make two
ELECTROMAGNETIC STIFFNESS between individual mover and stator meets (2) formula relation.
Therefore, by controlling the electric current of two magnet exciting coils, so that it may so that the eigentone of two movers
Follow the tracks of fundamental frequency and the frequency multiplication needing vibration damping axle, reach resonance, the vibrational energy needing vibration damping axle is more delivered to
Two movers of vibroshock, reach the purpose of vibration damping.
This utility model include stator, location nut, stator axis, the first mover, the first mover axle, second
The parts such as mover, permanent magnet, first coil, the second coil, clutch shaft bearing, the second bearing, the first mover
Axle and the first mover are connected, and are connected with stator by clutch shaft bearing, and stator axis is connected with stator, and passes through
Second bearing and the second mover are connected, and stator axis two ends are equipped with location nut, and outside and the inner side of stator are all opened
Wired ring recess, is respectively provided with first coil and the second coil, stator is also equipped with annular permanent magnet.
It is equipped with edge on the surfaces externally and internally of stator, on the outer surface of the first mover and on the inner surface of the second mover
Even circumferential distribution tooth, and on stator outer surface with the tooth one_to_one corresponding on the second mover inner surface, stator
With the tooth one_to_one corresponding on the first mover outer surface on inner surface.
Between cog on tooth on first mover and stator inner surface, the tooth on the second mover with on stator outer surface
Between cog all leave a certain size working gas gap.
Claims (3)
1. a two-freedom torsional vibration damper, is characterized in that: include stator, the first mover, second
Mover, permanent magnet, described first mover is cylindrical structure, and described second mover and stator are the circle of hollow
Column structure, the first mover is fixed with the first mover axle, and stator is fixed with stator axis, the first mover axle
Two ends extend out to the outside of first two ends of mover respectively, the two ends of stator axis extend out to stator two respectively
The outside of individual end, stator is arranged on inside the second mover, and the first mover is arranged on stator interior, stator axis
Two ends matched by bearing and the second mover respectively, match with stator respectively in the two ends of the first mover axle,
Permanent magnet is arranged in stator, the outer wall of stator and inwall is all offered and puts coil groove, in the coil groove of outer wall
First coil is set, in the coil groove of inwall, the second coil is set, the position of permanent magnet be positioned at first coil and
Between second coil.
A kind of two-freedom torsional vibration damper the most according to claim 1, is characterized in that: stator
Inwall, outer wall and the outer wall of the first mover, the second mover inwall on be provided with and the most uniformly divide
The tooth of cloth, the tooth of stator outer wall and the position one_to_one corresponding of the tooth of the second mover inwall, the tooth of stator inner wall with
The position one_to_one corresponding of the tooth of the first mover outer wall.
A kind of two-freedom torsional vibration damper the most according to claim 2, is characterized in that: stator
Working gas gap is left, outside the tooth of stator inner wall and the first mover between tooth and the tooth of the second mover inwall of outer wall
Working gas gap is left between the tooth of wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407250.1U CN205745096U (en) | 2016-05-06 | 2016-05-06 | A kind of two-freedom torsional vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407250.1U CN205745096U (en) | 2016-05-06 | 2016-05-06 | A kind of two-freedom torsional vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205745096U true CN205745096U (en) | 2016-11-30 |
Family
ID=57370965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407250.1U Withdrawn - After Issue CN205745096U (en) | 2016-05-06 | 2016-05-06 | A kind of two-freedom torsional vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205745096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782340A (en) * | 2016-05-06 | 2016-07-20 | 哈尔滨工程大学 | Two-degree-of-freedom torsional vibration reducer |
-
2016
- 2016-05-06 CN CN201620407250.1U patent/CN205745096U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782340A (en) * | 2016-05-06 | 2016-07-20 | 哈尔滨工程大学 | Two-degree-of-freedom torsional vibration reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20171121 |
|
| AV01 | Patent right actively abandoned |