CN108612761B - Method and structure for eliminating torsion bar system noise - Google Patents
Method and structure for eliminating torsion bar system noise Download PDFInfo
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- CN108612761B CN108612761B CN201810799658.1A CN201810799658A CN108612761B CN 108612761 B CN108612761 B CN 108612761B CN 201810799658 A CN201810799658 A CN 201810799658A CN 108612761 B CN108612761 B CN 108612761B
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- 229910052751 metal Inorganic materials 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 4
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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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
- F16F2224/00—Materials; Material properties
Abstract
A method and structure for eliminating torsion bar system noise includes supporting seat, supporting ball hinge and torsion bar shaft, the supporting ball hinge is set in the supporting seat, the torsion bar shaft is passed through the supporting ball hinge; the outer layer of the torsion bar shaft and the supporting spherical hinge are coated with a wear-resistant coating with low friction coefficient, and a tiny gap is arranged between the wear-resistant layer of the supporting spherical hinge and the torsion bar shaft. The friction between the supporting spherical hinge and the torsion bar shaft is reduced by adopting the wear-resistant self-lubricating friction pair to reduce the friction coefficient between the supporting spherical hinge and the torsion bar shaft, and the impact noise generated during operation is avoided by reducing the vertical movement range of the torsion bar shaft. The invention can not only eliminate the noise of the torsion bar system, but also prolong the service life of the torsion bar system.
Description
Technical Field
The invention relates to a method and a structure for eliminating noise, in particular to a method and a structure for eliminating torsion bar system noise, and belongs to the technical field of railway vehicles.
Background
In a torsion bar system used on a railway vehicle at present, a built-in supporting mode is adopted for a torsion bar shaft, a supporting spherical hinge is of a two-flap friction structure, noise can be generated when the supporting spherical hinge runs on a torsion bar assembly, but the cost for changing related parts is too high, such as changing the spherical hinge into a friction-free rubber metal piece, and when an inner sleeve of the supporting spherical hinge is made of a friction-resistant nylon material, the problem of noise is quite large according to the prior art.
The current state of torsion bar systems in use today are as follows:
1) The supporting ball hinge has discontinuous click sound when running on the torsion bar component
2) The friction coefficient of the friction pair is more than or equal to 0.4 when the torsion bar runs, the service life of the torsion bar is consistent with that of a rubber part (ensuring 8 years), and no surplus exists.
3) Market share is affected by torsion bar noise problems.
4) The design of the torsion bar supporting spherical hinge does not form a design standard, and the noise problem is continued with the subsequent product development.
5) The ball hinge is supported without precompression during assembly, so that the gap between the upper and lower movable torsion bar shafts is overlarge, and impact noise is generated during operation.
6) The friction bearing material on the supporting spherical hinge is nylon Long Jian which is wear-resistant, but has a larger friction coefficient, and is generally more than 0.4. The parts of the torsion bar shaft which are rubbed with the torsion bar shaft are primed, the friction is increased, and the torsion bar shaft is easy to abrade into fine particles, thereby causing noise. When the torsion bar component moves, the torsion bar shaft drives the nylon sleeve to move due to the existence of friction force, so that the supporting spherical hinge is twisted. When the torsion moment of the supporting spherical hinge is larger than the friction moment after a certain angle is rotated, the torsion rod shaft and the nylon sleeve move relatively quickly, and a 'click' sound is generated.
7) The sealing of the original structure is poor, dust and water are easy to enter, and abrasion and noise are easy to cause.
Some related methods for reducing or eliminating noise exist, such as application number CN201610498591.9, and the invention patent application entitled "anti-abnormal noise structure for torsion bar of automobile rear cover hinge" discloses an anti-abnormal noise structure for torsion bar of automobile rear cover hinge, which comprises a hinge sheet metal part, wherein a torsion bar placing groove is arranged on the hinge sheet metal part, a torsion bar is placed in the torsion bar placing groove, a copper sleeve is arranged in the torsion bar placing groove, and the torsion bar is placed in contact with the copper sleeve when placed in the torsion bar placing groove. Through set up the copper sheathing in the sheet metal component of hinge and the contact position department of torsion bar, protect the sheet metal component through the copper sheathing, reduce and produce abnormal sound with sheet metal component direct friction, the life of extension hinge.
As another example, application number CN201711049252.3, the invention patent application entitled "bearing seat with low noise" discloses a bearing seat with low noise, which comprises a base, the mounting hole is opened to base top outer wall both sides, and base top inner wall welding has shock pad, shock pad top outer wall welding has the lower lid, and the bottom outer wall both sides of lower lid and the top inner wall both sides of base all open there is the connecting hole, lower lid bottom outer wall welding has spacing post, and spacing post outer wall has cup jointed the spring, the bottom inner wall of base top inner wall is opened there is the spacing groove, the bottom outer wall that the spring both ends are fixed in the lower lid respectively through the screw and the bottom inner wall of spacing groove, the fixed orifices have all been opened to lower lid top outer wall both sides. According to the invention, the contact area of the bearing seat and the bearing is reduced in a notch-forming manner, the sound transmission effect is reduced, and the vibration of the bearing seat is reduced by the cooperation of the damping cushion block and the spring, so that the service life of the bearing seat is prolonged, and meanwhile, the noise can be reduced by reducing the vibration.
The first document discloses an abnormal sound prevention structure on an automobile, but the structure cannot meet the requirements on rigidity and the like of a torsion bar system on a railway vehicle, and the structure is not suitable for the torsion bar system due to the fact that the automobile structure is different from the railway vehicle structure and performance. Likewise, the second document cannot meet the performance requirements of the rail vehicle on all aspects of the torsion bar system, and cannot be used as a solution of the project. Thus, redesign and testing is required.
Disclosure of Invention
The invention provides a method and a structure for eliminating the noise of a torsion bar system, which aims at the problem that the current torsion bar system generates noise during operation, eliminates the noise of the torsion bar system and can prolong the service life of the torsion bar system.
The invention adopts the technical means for solving the problems that: a method for eliminating noise of torsion bar system features that a self-lubricating antiwear friction pair is used to reduce the friction coefficient between supporting spherical hinge and torsion bar axle and the friction between supporting spherical hinge and torsion bar axle is reduced, and/or the up-down range of motion of torsion bar axle is reduced to prevent the impact noise generated during running.
Further, the friction coefficient between the supporting spherical hinge and the torsion bar shaft is reduced by spraying a wear-resistant coating with low friction coefficient on the surface of the torsion bar shaft at the position where the surface of the torsion bar shaft contacts with the supporting spherical hinge.
Further, PTFE coating is sprayed on the contact position of the surface of the torsion bar shaft and the supporting spherical hinge, and the friction coefficient is reduced to 0.1-0.4.
Further, a high polymer wear-resistant layer with low friction coefficient is arranged in the spherical hinge outer sleeve for supporting the spherical hinge and is contacted with the torsion bar shaft so as to reduce the friction coefficient between the supporting spherical hinge and the torsion bar shaft.
Further, the vulcanized PET wear-resistant layer in the spherical hinge outer sleeve is contacted with the torsion bar shaft, so that the friction coefficient is reduced to 0.05-0.2.
Further, the outer diameter of the supporting spherical hinge is larger than the inner diameter of the supporting seat, the supporting spherical hinge is precompressed and installed in the supporting seat, and play caused by a gap between the supporting spherical hinge and the supporting seat is avoided; and a tiny gap is arranged between the wear-resistant layer in the supporting spherical hinge and the torsion bar shaft, so that the rigidity of the torsion bar system is ensured, and meanwhile, the gap between the supporting spherical hinge and the torsion bar shaft is reduced, and the friction force between the supporting spherical hinge and the torsion bar shaft is reduced.
Further, after the supporting ball joint is formed, secondary processing is performed at the radial end face of the supporting ball joint to ensure a minute gap between the supporting ball joint and the torsion bar shaft.
Further, a notch is arranged on the outer side of the radial end face of the spherical hinge outer sleeve, and the spherical hinge outer sleeve is released towards the notch when the supporting spherical hinge is precompressed and installed in the supporting seat.
Further, the spherical hinge sleeve is protruded inwards at one end close to the end part of the torsion shaft to form a structure with a 7-shaped cross section, and the sealing ring formed at the protruded end is contacted with the torsion shaft to form a sealing structure, so that foreign matters are prevented from entering the contact surface between the torsion shaft and the supporting spherical hinge.
Further, the outside of the supporting spherical hinge is provided with an outwards protruding bulge, the corresponding position of the inner side of the supporting seat is provided with an inwards concave groove, and the bulge is matched with the groove when the supporting spherical hinge is arranged in the supporting seat, so that the supporting spherical hinge is prevented from moving in the supporting seat.
Further, a metal cutting sleeve is arranged on the torsion bar shaft, one end of the metal cutting sleeve is in contact matching with one end of the supporting spherical hinge, which is far away from the end part of the torsion bar shaft, so that the supporting spherical hinge is prevented from moving along the torsion bar shaft.
The structure for eliminating the noise of the torsion bar system comprises a supporting seat, a supporting spherical hinge and a torsion bar shaft, wherein the supporting spherical hinge is arranged in the supporting seat, and the torsion bar shaft penetrates through the supporting spherical hinge; the outer layer of the torsion bar shaft and the supporting spherical hinge are coated with a wear-resistant coating with low friction coefficient, and a tiny gap is arranged between the wear-resistant layer of the supporting spherical hinge and the torsion bar shaft.
Further, the supporting seat and the supporting spherical hinge are both two-petal, the wear-resistant layer is vulcanized on the inner side of the spherical hinge jacket, and one end of the wear-resistant layer, which is close to the end part of the torsion bar shaft, is provided with a sealing ring formed by inward protruding of the spherical hinge jacket.
Further, a notch is arranged on the outer side of the radial end face of the spherical hinge outer sleeve.
Further, the outer side of the spherical hinge outer sleeve is provided with a bulge protruding outwards, the corresponding position of the inner side of the supporting seat is provided with a concave groove, and the bulge is matched with the groove when the supporting spherical hinge is arranged in the supporting seat.
Further, a metal cutting sleeve is arranged on the torsion bar shaft, and one end of the metal cutting sleeve is in contact matching with one end of the supporting spherical hinge, which is far away from the end part of the torsion bar shaft.
The beneficial effects of the invention are as follows:
1. according to the invention, the high polymer wear-resistant layer with low friction coefficient is arranged in the supporting spherical hinge, and the wear-resistant coating with low friction coefficient is sprayed at the contact position of the torsion bar shaft and the supporting spherical hinge, so that the friction coefficient between the supporting spherical hinge and the torsion bar shaft is reduced, the friction between the supporting spherical hinge and the torsion bar shaft is reduced, and the abrasion of the supporting spherical hinge is reduced.
2. The support spherical hinge is precompressed into the support seat, the support spherical hinge is in interference fit with the support seat, a gap between the support spherical hinge and the support seat is eliminated, a small gap is arranged between the support spherical hinge and the torsion bar shaft, the rigidity of the torsion bar system is ensured, the movable range of the torsion bar shaft during operation is reduced, and impact noise generated during operation is avoided.
3. The structure formed by the invention can resist the erosion of chemical agents, greatly improves the wear resistance, uniformly increases the heat conductivity, the compressive strength and the compression modulus, and has good shock absorption performance.
Drawings
FIG. 1 is a schematic view of a torsion bar system currently in use;
FIG. 2 is an axial cross-sectional schematic view of the structure of the present invention;
FIG. 3 is a schematic view of an axial cross-sectional structure of a supporting spherical hinge according to the present invention;
FIG. 4 is a schematic view of the radial direction of the supporting spherical hinge of the present invention;
in the figure: 1. the torsion bar comprises a torsion bar shaft, a supporting seat, a groove, a supporting spherical hinge, a spherical hinge jacket, a boss, a sealing ring, a notch, a wear-resistant layer, a metal cutting sleeve, a torsion arm and a connecting rod.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, one torsion bar system currently used is that torsion arms 5 are arranged at two ends of a torsion bar shaft 1, and a connecting rod 6 is connected with the torsion bar shaft 1 through the torsion arms 5; the supporting spherical hinge 3 is positioned in the supporting seat 2 and fixed at the two ends of the torsion bar shaft 1 near the torsion arm 6 so as to fix the torsion bar system on the bogie. The supporting seat 2 and the supporting spherical hinge 3 are both two-petal type, the supporting seat 2 is a metal piece, and the supporting spherical hinge 3 is made of nylon 66 material. The position on the torsion bar shaft 1, which is in contact with the supporting spherical hinge 3, is coated with a primer, whereby the friction coefficient of the friction pair formed between the supporting spherical hinge 3 and the torsion bar shaft 1 is high, and the primer is easily worn into fine particles due to the large friction during the running of the vehicle, further increasing noise.
Example 1
The structure for eliminating the noise of the torsion bar system comprises a supporting seat 2, a supporting spherical hinge 3 and a torsion bar shaft 1, wherein the supporting spherical hinge 3 is arranged in the supporting seat 2, the torsion bar shaft 1 penetrates through the supporting spherical hinge 3, and the supporting seat 2 and the supporting spherical hinge 3 adopt a two-flap structure; in the embodiment, the PTFE self-lubricating coating with low friction coefficient is sprayed at the contact position of the torsion bar shaft 1 and the supporting spherical hinge 3 to improve the noise generated during operation, the friction coefficient of a friction pair formed between the supporting spherical hinge 3 made of nylon 66 and the torsion bar shaft 1 with the surface of the PTFE self-lubricating coating is reduced to be between 0.1 and 0.4 compared with that of the original structure, and the torsion bar system with the structure is noiseless during starting after being on line, and noise can appear during subsequent operation, but the friction pair is obviously reduced compared with the original structure.
Example two
As shown in fig. 2, in this embodiment, nylon 66 is used as the spherical hinge outer sleeve 31 for supporting the spherical hinge 3, and the PET wear-resistant layer 32 with low friction coefficient is vulcanized in the spherical hinge outer sleeve 31, and the friction pair formed between the supporting spherical hinge 3 with the PET wear-resistant layer 32 and the torsion bar shaft 1 with the PTFE self-lubricating coating sprayed on the outside is greatly reduced to 0.05-0.2 compared with the original structure. The reduction of friction between the supporting spherical hinge 3 and the torsion bar shaft 1 can avoid noise, and simultaneously reduce abrasion between the supporting spherical hinge 3 and the torsion bar shaft 1, thereby prolonging the service life of the torsion bar system.
Example III
In this embodiment, the outer diameter of the supporting spherical hinge 3 is slightly larger than the inner diameter of the supporting seat 2, the supporting spherical hinge 3 is in interference fit with the supporting seat 2 after precompressed, and a small gap is arranged between the wear-resistant layer 32 of the supporting spherical hinge 3 and the torsion bar shaft 1. The interference fit between the support spherical hinge 3 and the support seat 2 after precompression avoids the gap between the support spherical hinge 3 and the support seat 2 in the original structure, so that the torsion bar shaft 1 drives the support spherical hinge 3 and the support seat 2 to generate relative motion in the motion process, the support spherical hinge 3 and the support seat 2 rub, and meanwhile, the motion range of the torsion bar shaft 1 is too large, and impact noise is generated; a small gap is arranged between the supporting spherical hinge 3 and the torsion bar shaft 1, so that the rigidity of the torsion bar component is not influenced.
Example IV
As shown in fig. 3, in this embodiment, a seal ring 312 formed by inwardly protruding the spherical hinge outer jacket 31 is provided at one end of the wear-resistant layer 32 supporting the spherical hinge 3 near the end of the torsion bar shaft 1. The existence of the seal ring 312 prevents dust, water and other foreign matters from entering the contact surface between the supporting spherical hinge 3 and the torsion bar shaft 1, thereby preventing the abrasion-resistant layer 32 and the torsion bar shaft 1 from being corroded and rubbed by the foreign matters, and prolonging the service life of the torsion bar system.
Example five
As shown in fig. 4, the outer spherical hinge sleeve 31 supporting the spherical hinge 3 in the present embodiment is provided with a notch 313 on the outer side of the radial end face. When the supporting spherical hinge 3 is precompressed and installed in the supporting seat 2, the supporting spherical hinge 3 is extruded and then releases pressure towards the notch 313, so that the supporting spherical hinge 3 is prevented from being extruded, broken and damaged in the installation process.
Example six
In this embodiment, the outer side of the spherical hinge sleeve 31 is provided with a protrusion 311 protruding outwards, and the corresponding position of the inner side of the supporting seat 2 is provided with a concave groove 21, and when the supporting spherical hinge 3 is installed in the supporting seat 2, the protrusion 311 is matched with the groove 21. By the cooperation between the protrusion 311 and the groove 21, the supporting spherical hinge 3 is prevented from moving in the supporting seat 2.
Example seven
As shown in fig. 1, in this embodiment, a metal ferrule 4 is provided on the torsion bar shaft 1, and one end of the metal ferrule 4 is in contact matching with one end of the supporting spherical hinge 3 away from the end of the torsion bar shaft 1. The setting of metal cutting ferrule 4 both further fixes the position of supporting spherical hinge 3 and supporting seat 2 at torsion bar axle 1, also seals the contact terminal surface between supporting spherical hinge 3 and torsion bar axle 1 simultaneously, avoids the foreign matter to get into the contact surface of supporting spherical hinge 3 and torsion bar axle 1.
The invention also relates to a method for eliminating the noise of the torsion bar system, which reduces the friction between the supporting spherical hinge 3 and the torsion bar shaft 1 by adopting a wear-resistant self-lubricating friction pair to reduce the friction coefficient between the supporting spherical hinge 3 and the torsion bar shaft 1, and avoids the impact noise generated during operation by reducing the up-down movement range of the torsion bar shaft 1.
The friction coefficient between the supporting spherical hinge 3 and the torsion bar shaft 1 is reduced by spraying a wear-resistant coating with low friction coefficient on the surface of the torsion bar shaft 1 at the position contacted with the supporting spherical hinge 3 and arranging a high polymer wear-resistant layer 32 with low friction coefficient in a spherical hinge outer sleeve 31 of the supporting spherical hinge 3 to be contacted with the torsion bar shaft 1. After the friction coefficient is reduced, the friction between the supporting spherical hinge 3 and the torsion bar shaft 1 is reduced, the friction loss between the supporting spherical hinge 3 and the torsion bar shaft 1 is also reduced, and the service life of the torsion bar system is prolonged while noise is eliminated.
A PTFE coating is sprayed on the surface of the torsion bar shaft 1 at the contact position with the supporting spherical hinge 3, and a vulcanized PET wear-resistant layer 32 is contacted with the torsion bar shaft 1 in the spherical hinge jacket 31. The smoothness and high wear resistance of the PTFE material and the PET material reduce the friction coefficient between the supporting ball joint 3 and the torsion bar shaft 1, and prolong the service lives of the supporting ball joint 3 and the torsion bar shaft 1.
The outer diameter of the supporting spherical hinge 3 is set to be larger than the inner diameter of the supporting seat 2, the supporting spherical hinge 3 is precompressed and installed in the supporting seat 2, and play caused by a gap between the supporting spherical hinge 3 and the supporting seat 2 is avoided; a tiny gap is arranged between the wear-resistant layer 32 in the supporting spherical hinge 3 and the torsion bar shaft 1, so that the rigidity of the torsion bar system is ensured, and meanwhile, the gap between the supporting spherical hinge 3 and the torsion bar shaft 1 is reduced, and the friction force between the supporting spherical hinge and the torsion bar shaft is reduced.
The outer side of the spherical hinge sleeve 31 along the radial end face is provided with a notch 313, and when the supporting spherical hinge 3 is precompressed and installed in the supporting seat 2, the supporting spherical hinge is released towards the notch 313, so that the supporting spherical hinge 3 is prevented from being cracked, damaged and deformed after being extruded.
When the supporting ball pivot 3 is formed, secondary processing is performed at the radial end face of the supporting ball pivot 3 to ensure a minute gap between the supporting ball pivot 3 and the torsion bar shaft 1. After the support spherical hinge 3 is precompressed and installed in the support seat 2, the two support spherical hinges 3 are ensured to leave a tiny gap with the torsion bar shaft 1 after being combined into a whole through secondary processing due to extrusion. This unnecessary step eliminates the need for secondary processing when the radius of the supporting ball joint 3 and the size of the notch 313 of the ball joint cover 31 are properly designed after the technology is mature.
The spherical hinge sleeve 31 protrudes inwards at one end close to the end part of the torsion shaft 1 to form a structure with a 7-shaped cross section, and the sealing ring 312 formed at the protruding end contacts with the torsion shaft 1 to form a sealing structure, so that foreign matters are prevented from entering a contact surface between the torsion shaft 1 and the supporting spherical hinge 3. The sealing structure can prevent dust, water and other foreign matters from entering the contact surface between the torsion bar shaft 1 and the supporting spherical hinge 3, and the contact surface is worn and corroded due to the foreign matters, so that the sealing structure prolongs the service life of the torsion bar system.
The outside of the supporting spherical hinge 3 is provided with an outwards protruding bulge 311, the corresponding position of the inner side of the supporting seat 2 is provided with an inwards concave groove 21, and the bulge 311 is matched with the groove 21 when the supporting spherical hinge 3 is arranged in the supporting seat 2, so that the supporting spherical hinge 3 is prevented from moving in the supporting seat 2.
The torsion bar shaft 1 is provided with the metal cutting sleeve 4, one end of the metal cutting sleeve 4 is in contact matching with one end of the supporting spherical hinge 3, which is far away from the end part of the torsion bar shaft 1, so that the supporting spherical hinge 3 is prevented from moving along the torsion bar shaft 1. The setting of metal cutting ferrule 4 both further fixes the position of supporting spherical hinge 4 and supporting seat 2 at torsion bar axle 1, also seals the contact terminal surface between supporting spherical hinge 3 and torsion bar axle 1 simultaneously, avoids the foreign matter to get into the contact surface of supporting spherical hinge 3 and torsion bar axle 1.
Therefore, the high-molecular wear-resistant layer with low friction coefficient is arranged in the supporting spherical hinge, and the wear-resistant coating with low friction coefficient is sprayed at the contact position of the torsion bar shaft and the supporting spherical hinge, so that the friction coefficient between the supporting spherical hinge and the torsion bar shaft is reduced, the friction between the supporting spherical hinge and the torsion bar shaft is reduced, and the abrasion of the supporting spherical hinge is reduced. Through loading into the supporting seat with supporting spherical hinge precompression, interference fit between supporting spherical hinge and the supporting seat eliminates the clearance between supporting spherical hinge and the supporting seat, sets up tiny clearance simultaneously between supporting spherical hinge and torsion bar axle, reduces the torsional bar axle and is the movable range when guaranteeing torsion bar system rigidity, avoids the impact noise that produces when the operation. The structure formed by the invention can resist the erosion of chemical agents, greatly improves the wear resistance, uniformly increases the heat conductivity, the compressive strength and the compression modulus, and has good shock absorption performance.
The above embodiments are only for illustrating the present invention, not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, so that all equivalent technical solutions shall fall within the scope of the present invention, which is defined by the claims.
Claims (3)
1. The utility model provides a eliminate structure of torsion bar system noise, includes supporting seat (2), support ball pivot (3) and torsion bar axle (1), its characterized in that: the supporting spherical hinge (3) is arranged in the supporting seat (2), and the torsion bar shaft (1) passes through the supporting spherical hinge (3); the outer layer of the torsion bar shaft (1) matched with the supporting spherical hinge (3) is coated with a wear-resistant coating with low friction coefficient, and a tiny gap is arranged between the wear-resistant layer (32) of the supporting spherical hinge (3) and the torsion bar shaft (1);
the supporting seat (2) and the supporting spherical hinge (3) are both two-petal, the wear-resistant layer (32) is vulcanized on the inner side of the spherical hinge jacket (31), and one end, close to the end part of the torsion bar shaft (1), of the wear-resistant layer (32) is provided with a sealing ring (312) formed by inward protruding of the spherical hinge jacket;
a notch (313) is arranged on the outer side of the radial end surface of the spherical hinge outer sleeve (31);
the outer side of the spherical hinge jacket 31 is provided with a bulge (311) protruding outwards, the corresponding position of the inner side of the supporting seat (2) is provided with a concave groove (21), and when the supporting spherical hinge (3) is installed in the supporting seat (2), the bulge (311) is matched with the groove (21);
the torsion bar shaft (1) is provided with a metal cutting sleeve (4), and one end of the metal cutting sleeve (4) is in contact matching with one end of the supporting spherical hinge (3) far away from the end part of the torsion bar shaft (1).
2. A method of eliminating torsion bar system noise using the structure of claim 1, wherein: the friction between the supporting spherical hinge (3) and the torsion bar shaft (1) is reduced by adopting a wear-resistant self-lubricating friction pair to reduce the friction coefficient between the supporting spherical hinge (3) and the torsion bar shaft (1), and/or impact noise generated during operation is avoided by reducing the vertical movement range of the torsion bar shaft (1);
the PET wear-resistant layer (32) is vulcanized in the spherical hinge jacket (31) to be contacted with the torsion bar shaft (1), so that the friction coefficient is reduced to 0.05-0.2;
the outer diameter of the supporting spherical hinge (3) is set to be larger than the inner diameter of the supporting seat (2), the supporting spherical hinge (3) is precompressed and arranged in the supporting seat (2), and play caused by the gap between the supporting spherical hinge (3) and the supporting seat (2) is avoided; a small gap is arranged between a wear-resistant layer (32) in the supporting spherical hinge (3) and the torsion bar shaft (1), so that the rigidity of the torsion bar system is ensured, the gap between the supporting spherical hinge (3) and the torsion bar shaft (1) is reduced, and the friction force between the supporting spherical hinge (3) and the torsion bar shaft (1) is reduced;
a notch (313) is arranged on the outer side of the radial end surface of the spherical hinge outer sleeve (31), and when the supporting spherical hinge (3) is precompressed and installed in the supporting seat (2), the supporting spherical hinge outer sleeve is released towards the notch (313);
the spherical hinge jacket (31) protrudes inwards at one end close to the end part of the torsion shaft (1) to form a structure with a 7-shaped cross section, and a sealing ring (312) formed at the protruding end is contacted with the torsion shaft (1) to form a sealing structure, so that foreign matters are prevented from entering a contact surface between the torsion shaft (1) and the supporting spherical hinge (3);
the outer side of the supporting spherical hinge 3 is provided with an outwards protruding bulge (311), the corresponding position of the inner side of the supporting seat (2) is provided with an inwards concave groove (21), and the bulge (311) is matched with the groove (21) when the supporting spherical hinge (3) is arranged in the supporting seat (2), so that the supporting spherical hinge (3) is prevented from moving in the supporting seat (2);
the torsion bar shaft (1) is provided with the metal cutting ferrule (4), one end of the metal cutting ferrule (4) is in contact matching with one end of the supporting spherical hinge (3) far away from the end part of the torsion bar shaft (1), and the supporting spherical hinge (3) is prevented from moving along the torsion bar shaft (1).
3. A method of eliminating torsion bar system noise in accordance with claim 2, wherein: after the supporting spherical hinge (3) is formed, secondary processing is carried out at the radial end face of the supporting spherical hinge (3) to ensure a tiny gap between the supporting spherical hinge (3) and the torsion bar shaft (1).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405109A1 (en) * | 1989-06-30 | 1991-01-02 | Fried. Krupp AG Hoesch-Krupp | Torsion bar |
| JPH0798034A (en) * | 1993-09-30 | 1995-04-11 | Kinugawa Rubber Ind Co Ltd | Structure of sliding bush |
| CN101998910A (en) * | 2008-04-03 | 2011-03-30 | 普尔曼公司 | Curled bushing with torsional slip |
| CN201863861U (en) * | 2010-10-27 | 2011-06-15 | 株洲时代新材料科技股份有限公司 | Side-rolling resistant torsion rod system for railway vehicle |
| CN208457031U (en) * | 2018-07-20 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of structure for eliminating torsion bar system noise |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10204975B4 (en) * | 2001-02-12 | 2006-05-11 | The Pullman Co., Milan | swivel |
| DE10116053A1 (en) * | 2001-03-30 | 2002-10-10 | Zf Boge Gmbh | Rubber bearings for chassis parts in motor vehicles |
| AT502800B1 (en) * | 2006-01-16 | 2007-06-15 | Siemens Transportation Systems | Bearing for bearing torsion spring bar of roll stabilization system of track vehicle, has pair of seals and each seal of pair has peripheral sealing lip and seals interact with each other via sealing lips in sealing manner |
| US20110116731A1 (en) * | 2009-11-17 | 2011-05-19 | The Pullman Company | Confined heavy duty bushing for high load applications |
-
2018
- 2018-07-20 CN CN201810799658.1A patent/CN108612761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405109A1 (en) * | 1989-06-30 | 1991-01-02 | Fried. Krupp AG Hoesch-Krupp | Torsion bar |
| JPH0798034A (en) * | 1993-09-30 | 1995-04-11 | Kinugawa Rubber Ind Co Ltd | Structure of sliding bush |
| CN101998910A (en) * | 2008-04-03 | 2011-03-30 | 普尔曼公司 | Curled bushing with torsional slip |
| CN201863861U (en) * | 2010-10-27 | 2011-06-15 | 株洲时代新材料科技股份有限公司 | Side-rolling resistant torsion rod system for railway vehicle |
| CN208457031U (en) * | 2018-07-20 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of structure for eliminating torsion bar system noise |
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| CN108612761A (en) | 2018-10-02 |
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