CN208457031U - A kind of structure for eliminating torsion bar system noise - Google Patents
A kind of structure for eliminating torsion bar system noise Download PDFInfo
- Publication number
- CN208457031U CN208457031U CN201821148943.9U CN201821148943U CN208457031U CN 208457031 U CN208457031 U CN 208457031U CN 201821148943 U CN201821148943 U CN 201821148943U CN 208457031 U CN208457031 U CN 208457031U
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- torsion bar
- flexural pivot
- support
- bar shaft
- friction
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Abstract
A kind of structure for eliminating torsion bar system noise, including support base, support flexural pivot and torsion bar shaft, support flexural pivot are arranged in support base, and torsion bar shaft passes through support flexural pivot；It is interference fitted between support base after wherein supporting flexural pivot precommpression, the outer layer wear-resistant coating that be coated with coefficient of friction low of torsion bar shaft and support flexural pivot cooperation supports between the wearing layer of flexural pivot and torsion bar shaft equipped with minim gap.Friction by using wear-resisting self-lubricating friction pair to reduce the coefficient of friction between support flexural pivot and torsion bar shaft to reduce between support flexural pivot and torsion bar shaft avoids the impact noise generated when operation by reducing the up and down range of torsion bar shaft.The utility model can not only eliminate the noise of torsion bar system, while can also extend the service life of torsion bar system.
Description
Technical field
The utility model relates to a kind of structures for eliminating noise, and in particular to a kind of structure for eliminating torsion bar system noise,
Belong to rail vehicle technical field.
Background technique
In a kind of torsion bar system used on current track vehicle, torsion bar shaft using built-in supporting way,
Supporting flexural pivot is the friction structure of two-flap type, and such support flexural pivot can generate noise in torsion bar component on-line running, but change
Associated components cost is too high, flexural pivot is such as changed to friction free rubber metal parts, and when support flexural pivot inner sleeve is using antifriction
When nylon material, still there is very big noise problem.
The status of torsion bar system used at present is as follows:
1) support flexural pivot has discontinuous " click click " sound in torsion bar component on-line running
2) coefficient of friction >=0.4 of friction pair when torsion bar is run, and the service life is consistent with rubber parts (guaranteeing 8 years), no richness
It is remaining.
3) since torsion bar noise problem influences the market share.
4) for the not formed design standard of design of torsion bar support flexural pivot, noise problem continues to grind with later product
Hair.
5) cause the mobilizable gap of torsion bar shaft or more excessive without precommpression when the assembly of support flexural pivot, punching is generated when operation
Hit noise.
6) supporting the material that friction is born on flexural pivot is that nylon part is although wear-resisting, but coefficient of friction is larger, generally higher than
0.4.The position to rub therewith in torsion bar shaft is priming paint, same to increase friction, and easy to wear is fine particle, causes noise.It turns round
Due to the presence of frictional force when bar assembly moves, torsion bar shaft drives nylon jacket to be moved, so that support flexural pivot is reversed.When
After rotating certain angle, when the torque of support flexural pivot torsion is greater than the torque of frictional force, occur between torsion bar shaft and nylon jacket
Relatively quick movement generates the sound of " click ".
7) sealing of original structure is poor, easily enters dust and water, easily leads to abrasion and noise.
The method that existing some correlations reduce or eliminate noise, such as application number CN201610498591.9, entitled " automobile
The application for a patent for invention of the anti-abnormal sound structure of rear cover hinge torsion bar " discloses a kind of anti-abnormal sound structure of car rear cover hinge torsion bar, packet
Hinge sheet metal component is included, torsion bar placing groove is provided on the hinge sheet metal component, is placed with torsion bar in the torsion bar placing groove, it is described
Copper sheathing is provided in torsion bar placing groove, the torsion bar is in contact when being placed on torsion bar placing groove with copper sheathing.Pass through the metal plate in hinge
Copper sheathing is set at the contact position of golden part and torsion bar, sheet metal component is protected by copper sheathing, is reduced and sheet metal component direct friction
Abnormal sound is generated, the service life of hinge is extended.
The application for a patent for invention of for another example application number CN201711049252.3, entitled " a kind of bearing block that noise is small " are public
A kind of bearing block that noise is small, including pedestal are opened, base top outer wall two sides are provided with mounting hole, and base top inner wall
It is welded with damping cushion, the damping cushion top exterior walls are welded with lower cover, and the bottom outer wall two sides of lower cover and pedestal
Top inner wall two sides be provided with connecting hole, the lower cover bottom outer wall is welded with limited post, and limits column outer wall and be socketed with
Spring, the base top inner wall are provided with limiting slot, and the both ends of the spring passes through screw respectively and is fixed on outside the bottom of lower cover
The bottom interior wall of wall and limiting slot, lower cover top exterior walls two sides are provided with fixation hole.The side that the present invention passes through open gap
Formula reduces bearing block and bearing cotact area, reduces sound transmission effect, by the cooperation of damping cushion and spring, reduces bearing
The vibration of seat is conducive to extend the service life of bearing block, while can also reduce the size of noise by reducing vibration.
Above-mentioned file one discloses the structure of anti-abnormal sound on automobile, but this structure is unable to satisfy on rail vehicle to torsion bar
The requirement of the rigidity of system etc., and due to the difference of vehicle structure and rail vehicle structure and performance, this structure is not
Adaptation and torsion bar system.Equally, file two is also unable to satisfy requirement of the rail vehicle to torsion bar system various aspects of performance, can not
Solution as this project.Therefore, it is necessary to redesign and test.
Utility model content
The utility model leads to the problem of noise current torsion bar system at runtime, proposes a kind of elimination torsion bar
The structure of system noise eliminates the noise of torsion bar system, while can also extend the service life of torsion bar system.
The utility model in order to solve the above problem used by technological means are as follows: it is a kind of eliminate torsion bar system noise knot
Structure, including support base, support flexural pivot and torsion bar shaft, support flexural pivot are arranged in support base, and torsion bar shaft passes through support flexural pivot；Wherein
It is interference fitted between support base after support flexural pivot precommpression, to be coated with coefficient of friction low for the outer layer that torsion bar shaft cooperates with support flexural pivot
Wear-resistant coating, support between the wearing layer of flexural pivot and torsion bar shaft be equipped with minim gap.
Further, be the flexural pivot housing to play a supportive role on the outside of support flexural pivot, inside is the low macromolecule of coefficient of friction
Wearing layer.
Further, support base and support flexural pivot are two-flap type, and wearing layer vulcanization is and wear-resisting in the inside of flexural pivot housing
Layer has by flexural pivot housing the sealing ring that is formed towards convex close to one end of torsion bar shaft end.
Further, flexural pivot housing radially end face outside setting it is jagged.
Further, the outside of flexural pivot housing is equipped with the protrusion protruded outwardly, the corresponding position setting of the inside of support base
There is the groove of indent, protrusion and matching grooves when supporting flexural pivot to be packed into support base.
Further, metal ferrule is set in torsion bar shaft, one end of metal ferrule and support flexural pivot are far from torsion bar shaft end
End thereof contacts matching.
The beneficial effects of the utility model are:
1. the utility model by support flexural pivot the low high molecular abrasion-proof layer of setting coefficient of friction, torsion bar shaft with
The wear-resistant coating for supporting the contact position spraying coefficient of friction of flexural pivot low, reduces the friction system between support flexural pivot and torsion bar shaft
Number reduces the friction between support flexural pivot and torsion bar shaft, reduces the abrasion of support flexural pivot.
2. the support flexural pivot precommpression of the utility model is packed into support base, supports and is interference fitted between flexural pivot and support base,
The gap between support flexural pivot and support base is eliminated, while minim gap is set between support flexural pivot and torsion bar shaft, is being guaranteed
Torsion bar shaft is scope of activities when reducing operation while torsion bar system rigidity, avoids the impact noise generated when operation.
3. the structure that the utility model is formed is resistant to the erosion of chemicals, wearability is increased substantially, and thermal conductivity resists
Compressive Strength, compression modulus uniformly increase, and damping performance is good.
Detailed description of the invention
Fig. 1 is a kind of currently used torsion bar system structural schematic diagram；
Fig. 2 is the utility model structure axial direction schematic cross-sectional view；
Fig. 3 is that the utility model supports flexural pivot axial direction schematic cross-sectional view；
Fig. 4 is that the utility model supports flexural pivot radial direction schematic diagram；
In figure: 1. torsion bar shafts, 2. support bases, 21. grooves, 3. support flexural pivots, 31 flexural pivot housings, 311. protrusions, 312. is close
Seal, 313. notches, 32. wearing layers, 4. metal ferrules, 5. torsion arms, 6. connecting rods.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
For a kind of currently used torsion bar system as shown in Figure 1, the both ends of torsion bar shaft 1 are torsion arm 5, connecting rod 6 passes through torsion
Arm 5 is connect with torsion bar shaft 1；Support flexural pivot 3 is located in support base 2, is fixed on 1 both ends of torsion bar shaft close to the position of torsion arm 6, with
Torsion bar system is fixed on bogie.Support base 2 and support flexural pivot 3 are two-flap type, and support base 2 is metalwork, support flexural pivot 3
It is made of nylon 66 material.The position contacted in torsion bar shaft 1 with support flexural pivot 3 is coated with priming paint, thus supports flexural pivot 3 and turns round
The secondary coefficient of friction of the friction formed between bar axis 1 is high, big due to rubbing in the operational process of vehicle, and priming paint is easy to be ground
Damage is fine particle, further increases noise.
Embodiment one
A kind of structure for eliminating torsion bar system noise, including support base 2, support flexural pivot 3 and torsion bar shaft 1, support flexural pivot 3 are set
It sets in support base 2, torsion bar shaft 1 passes through support flexural pivot 3, and support base 2 and support flexural pivot 3 use two-flap type structure；The present embodiment
Production when using the low PTFE self-lubricating coat in use of the position spraying coefficient of friction contacted in torsion bar shaft 1 with support flexural pivot 3 come to operation
Raw noise improves, and material is the support flexural pivot 3 of nylon66 fiber and surface is shape between the torsion bar shaft 1 of PTFE self-lubricating coat in use
At its secondary coefficient of friction of friction dropped between 0.1-0.4 compared with original structure, and this structure torsion bar system it is online after open
Noiseless when dynamic, when follow-up operation, will appear noise, but be obviously reduced relative to original structure.
Embodiment two
As shown in Fig. 2, using nylon66 fiber as the flexural pivot housing 31 of support flexural pivot 3 in the present embodiment, in flexural pivot housing 31
The low PET wearing layer 32 of inside vulcanization coefficient of friction, this inside are that the support flexural pivot 3 of PET wearing layer 32 has with external spray
Its secondary coefficient of friction of the friction formed between the torsion bar shaft 1 of PTFE self-lubricating coat in use is greatly reduced compared with original structure, is reduced to
0.05-0.2.The reduction to rub between support flexural pivot 3 and torsion bar shaft 1 is not only able to avoid noise, while also reducing support ball
Abrasion between hinge 3 and torsion bar shaft 1, extends the service life of torsion bar system.
Embodiment three
In the present embodiment support flexural pivot 3 outer diameter be slightly larger than support base 2 internal diameter, support 3 precommpression of flexural pivot after with support
It is interference fitted between seat 2, and is equipped with minim gap between the wearing layer 32 and torsion bar shaft 1 of support flexural pivot 3.Support 3 precompressed of flexural pivot
Interference fit avoids supporting the gap generated between flexural pivot 3 and support base 2 to make torsion bar shaft in original structure between support base 2 after contracting
1 generates relative motion between drive support flexural pivot 3 and support base 2 during the motion, supports and rubs between flexural pivot 3 and support base 2
It wipes, while also making the scope of activities of torsion bar shaft 1 excessive, generate impact noise；It is arranged between support flexural pivot 3 and torsion bar shaft 1 small
Gap guarantees that this structure will not influence the rigidity of torsion bar component.
Example IV
As shown in figure 3, supporting the wearing layer 32 of flexural pivot 3 to have close to one end of 1 end of torsion bar shaft by flexural pivot in the present embodiment
The sealing ring 312 that housing 31 is formed towards convex.The presence of sealing ring 312 avoids the foreign matters such as dust and water and enters support flexural pivot
Contact surface between 3 and torsion bar shaft 1, and then corrosion and friction of the foreign matter to wearing layer 32 and torsion bar shaft 1 are avoided, to extend
The service life of torsion bar system.
Embodiment five
As shown in figure 4, in the present embodiment support flexural pivot 3 flexural pivot housing 31 radially end face outside setting it is jagged
313.When 3 precommpression of flexural pivot will be supported to be packed into support base 2, support flexural pivot 3 be squeezed after towards releasing stress at notch 313,
It avoids supporting flexural pivot 3 to squeeze crack damage in loading procedure.
Embodiment six
The outside of flexural pivot housing 31 is equipped with the protrusion 311 protruded outwardly, the corresponding positions of the inside of support base 2 in the present embodiment
The groove 21 for being equipped with indent is installed, protrusion 311 and groove 21 match when supporting flexural pivot 3 to be packed into support base 2.Pass through protrusion 311
Cooperation between groove 21 avoids the support play in support base 2 of flexural pivot 3.
Embodiment seven
As shown in Figure 1, metal ferrule 4, one end of metal ferrule 4 and support flexural pivot 3 is arranged in torsion bar shaft 1 in the present embodiment
End thereof contacts far from 1 end of torsion bar shaft match.The setting of metal ferrule 4 was both further turning round support flexural pivot 3 and support base 2
The position of bar axis 1 is fixed, while being also sealed to the contact face between support flexural pivot 3 and torsion bar shaft 1, avoids foreign matter
Into the contact surface of support flexural pivot 3 and torsion bar shaft 1.
The utility model reduces rubbing between support flexural pivot 3 and torsion bar shaft 1 by using wear-resisting self-lubricating friction pair
Coefficient is wiped to reduce the friction between support flexural pivot 3 and torsion bar shaft 1, is avoided by reducing the up and down range of torsion bar shaft 1
The impact noise generated when operation.
The low wear-resistant coating of coefficient of friction is sprayed by the position contacted on 1 surface of torsion bar shaft with support flexural pivot 3, is being supported
The low high molecular abrasion-proof layer 32 of setting coefficient of friction is contacted with torsion bar shaft 1 to reduce support flexural pivot 3 in the flexural pivot housing 31 of flexural pivot 3
Coefficient of friction between torsion bar shaft 1.After coefficient of friction reduces, the friction between flexural pivot 3 and torsion bar shaft 1 is supported to reduce, support
Frictional dissipation between flexural pivot 3 and torsion bar shaft 1 also reduces, and the service life of torsion bar system is extended while eliminating noise.
PTFE coating is sprayed in the position that 1 surface of torsion bar shaft is contacted with support flexural pivot 3, vulcanizes PET in flexural pivot housing 31
Wearing layer 32 is contacted with torsion bar shaft 1.The slickness and high-wearing feature of PTFE material and PET material reduce support flexural pivot 3 and turn round
Coefficient of friction between bar axis 1 extends the service life of support flexural pivot 3 and torsion bar shaft 1.
The outer diameter that support flexural pivot 3 is arranged is greater than the internal diameter of support base 2, and support 3 precommpression of flexural pivot is packed into support base 2,
It avoids generating gap between support flexural pivot 3 and support base 2 and play occur；Wearing layer 32 and torsion bar shaft 1 in support flexural pivot 3
Between minim gap is set, guarantee to reduce gap and the reduction between support flexural pivot 3 and torsion bar shaft 1 while torsion bar system rigidity
Support the frictional force between flexural pivot and torsion bar shaft.
By flexural pivot housing 31 radially end face outside be arranged notch 313, when support 3 precommpression of flexural pivot be packed into support base 2
When discharged towards at notch 313, avoid support flexural pivot 3 from being squeezed rear cracking damage deformation.
After supporting the formation of flexural pivot 3, secondary operation is carried out at the radial end face of support flexural pivot 3 to guarantee to support flexural pivot 3
With the minim gap between torsion bar shaft 1.After supporting 3 precommpression of flexural pivot to be packed into support base 2, due to being squeezed, added by secondary
There are minim gaps between torsion bar shaft 1 after being combined into an entirety to guarantee two valves support flexural pivot 3 for work.This inessential step
Suddenly, it can not needed when 313 Sizes of notch of the radius of technology maturation rear support flexural pivot 3 and flexural pivot housing 31 design
Secondary operation.
By flexural pivot housing 31 towards projecting inward at one end close to 1 end of torsional axis, Formation cross-section at " 7 " font knot
Structure, the sealing ring 312 that protruding end is formed contact to form sealing structure with torsional axis 1, and foreign matter is avoided to enter torsion bar shaft 1 and support ball
Contact surface between hinge 3.Sealing structure can be avoided the foreign matters such as dust, water and enter torsion bar shaft 1 and support the contact surface between flexural pivot 3,
Because foreign matter can bring abrasion and corrosion to contact surface, therefore sealing structure extends the service life of torsion bar system.
The protrusion 311 outwardly protruded is set in the outside of support flexural pivot 3, is arranged in the corresponding position of the inside of support base 2
There is the groove 21 of indent, protrusion 311 and groove 21 match when support flexural pivot 3 is packed into support base 2, and support flexural pivot 3 is avoided to prop up
Support play in seat 2.
In torsion bar shaft 1, metal ferrule 4 is set, one end of metal ferrule 4 and support flexural pivot 3 far from 1 end of torsion bar shaft one
End in contact matching avoids support flexural pivot 3 along 1 play of torsion bar shaft.The setting of metal ferrule 4 is both further to support flexural pivot 4 and branch
Support seat 2 is fixed in the position of torsion bar shaft 1, while also carrying out to the contact face between support flexural pivot 3 and torsion bar shaft 1 close
Envelope avoids foreign matter from entering the contact surface of support flexural pivot 3 and torsion bar shaft 1.
As it can be seen that the utility model by support flexural pivot the low high molecular abrasion-proof layer of setting coefficient of friction, in torsion bar shaft
The wear-resistant coating low with the contact position spraying coefficient of friction of support flexural pivot, reduces the friction system between support flexural pivot and torsion bar shaft
Number reduces the friction between support flexural pivot and torsion bar shaft, reduces the abrasion of support flexural pivot.By the way that flexural pivot precommpression will be supported to be packed into
Support base is supported and is interference fitted between flexural pivot and support base, eliminates the gap between support flexural pivot and support base, while supporting
Minim gap is set between flexural pivot and torsion bar shaft, and torsion bar shaft is movable model when reducing operation while guaranteeing torsion bar system rigidity
It encloses, avoids the impact noise generated when operation.The structure that the utility model is formed is resistant to the erosion of chemicals, and wearability is substantially
Degree improves, and thermal conductivity, compression strength, compression modulus uniformly increase, and damping performance is good.
Above embodiments are only for illustration of the utility model, rather than limitations of the present invention, related technical field
Technical staff in the case where not departing from the spirit and scope of the utility model, can also make a variety of changes or convert, because
This all equivalent technical solution also should belong to the protection scope of the utility model, and the protection scope of the utility model should be by
Each claim limits.
Claims (6)
1. a kind of structure for eliminating torsion bar system noise, including support base, support flexural pivot and torsion bar shaft, support flexural pivot setting is being propped up
It supports in seat, torsion bar shaft passes through support flexural pivot；It is characterized by: being interference fitted between support base after support flexural pivot precommpression, turn round
The outer layer wear-resistant coating that be coated with coefficient of friction low of bar axis and support flexural pivot cooperation, supports between the wearing layer of flexural pivot and torsion bar shaft
Equipped with minim gap.
2. eliminating the structure of torsion bar system noise as described in claim 1, it is characterised in that: be support on the outside of support flexural pivot
The flexural pivot housing of effect, inside are the low high molecular abrasion-proof layer of coefficient of friction.
3. eliminating the structure of torsion bar system noise as claimed in claim 2, it is characterised in that: support base and support flexural pivot are
Two-flap type, wearing layer vulcanizes in the inside of flexural pivot housing, and wearing layer has close to one end of torsion bar shaft end by flexural pivot housing court
Convex and the sealing ring formed.
4. eliminating the structure of torsion bar system noise as claimed in claim 2, it is characterised in that: flexural pivot housing radially end face
Outside setting is jagged.
5. eliminating the structure of torsion bar system noise as claimed in claim 2, it is characterised in that: the outside of flexural pivot housing is equipped with court
The corresponding position of the protrusion of outer protrusion, the inside of support base is provided with the groove of indent, convex when supporting flexural pivot to be packed into support base
Rise and matching grooves.
6. eliminating the structure of torsion bar system noise as described in claim 1, it is characterised in that: metal card is arranged in torsion bar shaft
One end of set, metal ferrule is matched with support flexural pivot far from the end thereof contacts of torsion bar shaft end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821148943.9U CN208457031U (en) | 2018-07-20 | 2018-07-20 | A kind of structure for eliminating torsion bar system noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821148943.9U CN208457031U (en) | 2018-07-20 | 2018-07-20 | A kind of structure for eliminating torsion bar system noise |
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| Publication Number | Publication Date |
|---|---|
| CN208457031U true CN208457031U (en) | 2019-02-01 |
Family
ID=65180392
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821148943.9U Active CN208457031U (en) | 2018-07-20 | 2018-07-20 | A kind of structure for eliminating torsion bar system noise |
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| Country | Link |
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| CN (1) | CN208457031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612761A (en) * | 2018-07-20 | 2018-10-02 | 株洲时代新材料科技股份有限公司 | A kind of method and structure for eliminating torsion bar system noise |
| CN113669360A (en) * | 2021-08-16 | 2021-11-19 | 株洲时代瑞唯减振装备有限公司 | Method for reliably reducing friction force between curved surface sliding block and curved surface coating in rubber spherical hinge |
-
2018
- 2018-07-20 CN CN201821148943.9U patent/CN208457031U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612761A (en) * | 2018-07-20 | 2018-10-02 | 株洲时代新材料科技股份有限公司 | A kind of method and structure for eliminating torsion bar system noise |
| CN108612761B (en) * | 2018-07-20 | 2023-11-07 | 株洲时代新材料科技股份有限公司 | Method and structure for eliminating torsion bar system noise |
| CN113669360A (en) * | 2021-08-16 | 2021-11-19 | 株洲时代瑞唯减振装备有限公司 | Method for reliably reducing friction force between curved surface sliding block and curved surface coating in rubber spherical hinge |
| CN113669360B (en) * | 2021-08-16 | 2022-08-26 | 株洲时代瑞唯减振装备有限公司 | Rubber spherical hinge for reducing friction force between curved surface sliding block and curved surface coating |
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