CN204213252U - A kind of torsional vibration damper having the non-definite value of the natural frequency of damping - Google Patents
A kind of torsional vibration damper having the non-definite value of the natural frequency of damping Download PDFInfo
- Publication number
- CN204213252U CN204213252U CN201420560687.XU CN201420560687U CN204213252U CN 204213252 U CN204213252 U CN 204213252U CN 201420560687 U CN201420560687 U CN 201420560687U CN 204213252 U CN204213252 U CN 204213252U
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- mass block
- natural frequency
- definite value
- vibration damper
- lining
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Abstract
The utility model discloses a kind of torsional vibration damper having the non-definite value of the natural frequency of damping, comprise mass block, described mass block is hollow cylindrical structure, in mass block, lining is installed, flange for installing transmission shaft and floor are installed in lining, described flange is hub-type structure, and floor is installed on the gap of flange, and is connected by variable pitch spring.The utility model is arranged on transmission shaft, when driving flange to rotate when drive axis, also can drive lining and mass block motion.Effectively can carry out vibration damping when the rotating speed of transmission shaft is undergone mutation, prevent transmission system from occurring jitter phenomenon and resonance phenomenon.This has the natural frequency of damping not to be that the torsional vibration damper of definite value is with a wide range of applications as can be seen here.
Description
Technical field
The utility model belongs to the vibration damping field of machinery equipment transmission system, is specifically related to a kind of torsional vibration damper having the non-definite value of the natural frequency of damping.
Background technique
Advanced machinery equipment is that social economy's develop rapidly and manufacturing efficiency greatly improve one of indispensable factor.In machinery equipment, transmission system is diversified, adopts transmission shaft driven to be a kind of conventional mode.The defect that this kind of drive also has it namely when rotating speed suddenlys change transmission shaft can produce obvious shake, and then affect the performance of machinery equipment.Require in modern machines equipment that transmission system uses under the operating mode of different rotating speeds, and traditional torsion dynamic vibration absorber only has spring damping, effectiveness in vibration suppression is limited.Therefore, designing a kind of natural frequency of damping that has that can use under different operating mode is not the torsional vibration damper of definite value, extends machinery equipment have great importance working life for the resistance to shock improving mechanical drive shaft.
Model utility content
For above-mentioned defect or deficiency, the purpose of this utility model is to provide a kind of torsional vibration damper having the non-definite value of the natural frequency of damping, and transmission shaft operating mode at different frequencies can be enable to reach damping requirements.
For reaching above object, the technical solution of the utility model is:
Comprise mass block, described mass block is hollow cylindrical structure, in mass block, lining is installed, flange for installing transmission shaft and floor are installed in lining, described flange is hub-type structure, flange is provided with spoke, and floor is installed between adjacent spoke, and is connected with spoke by variable pitch spring.
The airtight chamber that described transmission shaft is formed through mass block and lining, and arrange with flange coaxial.
Fixed by roller bearing between described transmission shaft and mass block.
Passive elastomer block is provided with on described lining inwall has.
Described flange and bushing interface have been provided with active elastic block.
Described passive mass block and described active mass block are the mass block that chloroprene type glue is made.
Described floor both ends of the surface are provided with variable pitch spring, and the other end of variable pitch spring is connected with spoke.
Described lining is by radial location pin and mass block location sealing.
Equidistantly be provided with four outstanding floors in described lining, the length direction of floor is identical with the radial direction of lining.
Described flange inner wall is provided with keyway, and in mating connection with the key be arranged on transmission shaft.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model provides a kind of torsional vibration damper having the non-definite value of the natural frequency of damping, by mounting bush on the mass block of hollow cylindrical structure, and the flange installed in lining for installing transmission shaft and floor, floor is by variable pitch spring and Flange joint, when the rotating speed of transmission shaft occurs to change suddenly, consume because rotating speed suddenlys change and causes shake by the expansion force of variable pitch spring and compressive force and the frictional force between passive elastomer block and active elastic block, play the effect of damper, the non-definite value of natural frequency of variable pitch spring can prevent transmission shaft from occurring the appearance of resonance phenomenon effectively.
Accompanying drawing explanation
Fig. 1 is the structural representation having the torsional vibration damper of the non-definite value of the natural frequency of damping of the present utility model.
Fig. 2 is the sectional view of Fig. 1.
In figure: 1, mass block, 2, fixing rod, 3, roller bearing, 4, radial location pin, 5, lining, 6, passive elastomer block, 7, active elastic block, 8, flange, 9, key, 10, variable pitch spring, 11, floor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, 2, the present embodiment provides a kind of torsional vibration damper having the non-definite value of the natural frequency of damping, comprises mass block 1, lining 5 and flange 8, and mass block 1 is hollow cylinder.
The utility model provides a kind of torsional vibration damper having the non-definite value of the natural frequency of damping, comprise mass block 1, described mass block 1 is hollow cylindrical structure, lining 5 is installed in mass block 1, lining 5 is by radial location pin and mass block 1 location sealing, flange 8 for installing transmission shaft and floor 11 are installed in lining 5, described flange 8 is hub-type structure, flange 8 is provided with spoke, between floor 11 adjacent spoke, and be connected with spoke by variable pitch spring 10, described floor 11 both ends of the surface are provided with variable pitch spring 10, the other end of variable pitch spring 10 is connected with spoke.Wherein, the airtight chamber that transmission shaft is formed through mass block 1 and lining 5, and coaxially arrange with flange 8, fixed by roller bearing between transmission shaft and mass block 1.
Further, on described lining 5 inwall has, be provided with passive elastomer block 6, and flange 8 and lining 5 surface of contact are provided with active elastic block 7; Passive mass block 6 and described active mass block 7 are the mass block that chloroprene type glue is made.
In the utility model, the sidewall of mass block 1 is equidistantly provided with four outstanding floors 11, the length direction of rib 11 is the radial direction of mass block 1; There are four fixing rods 4 outside of mass block 1, is used for being fixed on by mass block 1 in the slip conduit in machinery equipment.Mass block 1 is connected with roller bearing 3 with between transmission shaft.
Lining 5 is a cylinder, and adopt Elastic Steel to make, its inwall posts passive elastomer block 6 for one week, and passive elastomer block 6 is connected with the mode adopting sulfuration to paste between lining 5.Passive elastomer block 6 adopts the strong neoprene that cost is low, oil resistant ability, durability are high to make.Use eight radial location pins 4 to position between mass block 1 with lining 5 to be connected.
Flange 8 is connected with adopting use two keys 9 between transmission shaft.There is active elastic block 7 the circumference outer end of flange 8, and the mode adopting sulfuration to paste between active elastic block 7 with flange 8 is connected.Active elastic block 7 adopts the strong neoprene that cost is low, oil resistant ability, durability are high to make.Decrement between active elastic block 7 and passive elastomer block 6 is less than 3%.Variable pitch spring 10 is adopted to be connected between flange 8 with floor 11.
Working principle of the present utility model is as follows:
When transmission shaft starts rotation gradually, key 9 drives flange 8 to rotate in the sealed chamber that lining 5 and mass block 1 are formed, and rotates in chute because the frictional qualities block 1 between passive elastomer block 6 and active elastic block 7 is also driven.The expansion force effect of the variable pitch spring 10 simultaneously between flange 8 and floor 11 also can force mass block 1 to rotate.
When rotating speed declines suddenly, because the inertia of mass block 1 is large, the rotating speed of mass block 1 is still very high, and under the drive of radial location pin 4, lining 5 is also at High Rotation Speed.Friction now between passive elastomer block 6 and active elastic block 7 can make the rotating speed of flange 8 and transmission shaft decline rapidly.And the compression force of the variable pitch spring 10 between flange 8 and floor 11 also can force the rotating speed of transmission shaft gradually to decline reposefully.
When the rotating speed of rotating shaft raises rapidly, the friction between passive elastomer block 6 and active elastic block 7, can prevent the rotating speed of flange 8 and transmission shaft can increase gradually.Quality comparation simultaneously due to mass block 1 is large, High Rotation Speed need compared with high pulling torque start also can time transmission shaft rotating speed lifting slowly.
When the rotating speed sudden change of rotating shaft, due to the non-definite value of the natural frequency employing variable pitch spring 10, even if having occurred shaking also there will not be resonance phenomenon.
In summary, when the rotating speed sudden change of the transmission system of machinery equipment, realize vibration damping by device of the present utility model, effectively can improve the jitter phenomenon that transmission system occurs, and prevent transmission system from occurring the phenomenon of resonance.
Claims (10)
1. one kind has the torsional vibration damper of the non-definite value of the natural frequency of damping, it is characterized in that, comprise mass block (1), described mass block (1) is hollow cylindrical structure, lining (5) is installed in mass block (1), flange (8) for installing transmission shaft and floor (11) are installed in lining (5), described flange (8) is hub-type structure, (8) are provided with spoke to flange, floor (11) is installed between adjacent spoke, and is connected with spoke by variable pitch spring (10).
2. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, it is characterized in that, the airtight chamber that described transmission shaft is formed through mass block (1) and lining (5), and coaxially arrange with flange (8).
3. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 2, is characterized in that, is fixed between described transmission shaft and mass block (1) by roller bearing.
4. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, is characterized in that, is provided with passive elastomer block (6) on described lining (5) inwall has.
5. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 4, is characterized in that, described flange (8) and lining (5) surface of contact have been provided with active elastic block (7).
6. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 5, is characterized in that, described passive mass block (6) and described active mass block (7) are the mass block that chloroprene type glue is made.
7. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, it is characterized in that, described floor (11) both ends of the surface are provided with variable pitch spring (10), the other end of variable pitch spring (10) is connected with spoke.
8. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, is characterized in that, described lining (5) is by radial location pin and mass block (1) location sealing.
9. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, it is characterized in that, equidistantly be provided with four outstanding floors (11) in described lining (5), the length direction of floor (11) is identical with the radial direction of lining (5).
10. a kind of torsional vibration damper having the non-definite value of the natural frequency of damping according to claim 1, is characterized in that, described flange (8) inwall is provided with keyway, and in mating connection with the key be arranged on transmission shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560687.XU CN204213252U (en) | 2014-09-26 | 2014-09-26 | A kind of torsional vibration damper having the non-definite value of the natural frequency of damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560687.XU CN204213252U (en) | 2014-09-26 | 2014-09-26 | A kind of torsional vibration damper having the non-definite value of the natural frequency of damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213252U true CN204213252U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560687.XU Expired - Fee Related CN204213252U (en) | 2014-09-26 | 2014-09-26 | A kind of torsional vibration damper having the non-definite value of the natural frequency of damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204213252U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606054A (en) * | 2017-10-23 | 2018-01-19 | 苏州大学 | A kind of self-adapting type torsional vibration damper and diesel engine |
| CN107630974A (en) * | 2017-10-27 | 2018-01-26 | 四川嘉义索隐科技有限公司 | Dynamical system damper with efficient shock-absorbing function |
| CN111173914A (en) * | 2020-02-12 | 2020-05-19 | 常州工学院 | High-damping dynamic vibration reduction gear |
| CN113864399A (en) * | 2021-10-20 | 2021-12-31 | 西南交通大学 | Self-adaptive order tracking vibration reduction metamaterial shaft structure |
| CN114483832A (en) * | 2021-12-29 | 2022-05-13 | 福建金泰机械制造有限公司 | Brake drum and production process thereof |
-
2014
- 2014-09-26 CN CN201420560687.XU patent/CN204213252U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606054A (en) * | 2017-10-23 | 2018-01-19 | 苏州大学 | A kind of self-adapting type torsional vibration damper and diesel engine |
| CN107630974A (en) * | 2017-10-27 | 2018-01-26 | 四川嘉义索隐科技有限公司 | Dynamical system damper with efficient shock-absorbing function |
| CN107630974B (en) * | 2017-10-27 | 2023-12-22 | 成都嘉擎动力科技有限公司 | Dynamic system shock absorber with efficient shock absorption function |
| CN111173914A (en) * | 2020-02-12 | 2020-05-19 | 常州工学院 | High-damping dynamic vibration reduction gear |
| CN113864399A (en) * | 2021-10-20 | 2021-12-31 | 西南交通大学 | Self-adaptive order tracking vibration reduction metamaterial shaft structure |
| CN114483832A (en) * | 2021-12-29 | 2022-05-13 | 福建金泰机械制造有限公司 | Brake drum and production process thereof |
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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: 20150318 Termination date: 20160926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |