CN202380369U - Multi-directional vibration reduction fastener of steel track - Google Patents
Multi-directional vibration reduction fastener of steel track Download PDFInfo
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- CN202380369U CN202380369U CN201120439921XU CN201120439921U CN202380369U CN 202380369 U CN202380369 U CN 202380369U CN 201120439921X U CN201120439921X U CN 201120439921XU CN 201120439921 U CN201120439921 U CN 201120439921U CN 202380369 U CN202380369 U CN 202380369U
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- rail
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- nonmetal
- base plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 123
- 238000013016 damping Methods 0.000 claims description 24
- 229920001967 Metal rubber Polymers 0.000 claims description 21
- 238000010521 absorption reaction Methods 0.000 claims description 15
- 230000035939 shock Effects 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 4
- 241001669679 Eleotris Species 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 206010003830 Automatism Diseases 0.000 abstract 3
- 150000002843 nonmetals Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- Vibration Prevention Devices (AREA)
- Railway Tracks (AREA)
Abstract
The utility model belongs to the technical field of vibration reduction and noise reduction for tracks and provides a multi-directional vibration reduction fastener of a steel track. Three groups of automatism vibration absorbing systems are arranged for each corresponding steel track. Non-metal elastic components I (2) and non-metal elastic components II (3) of two groups of automatism vibration absorbing systems are arranged on the waist portion of each steel track (1) symmetrically, a third group of automatism vibration absorbing systems are non-metal elastic components III (10) arranged between each steel track bottom and each bottom plate (9), and the non-metal elastic components III (10) are closely attached to each steel track bottom. The multi-directional vibration reduction fastener of the steel track effectively solves the problems of steel track vibration and noise increasing caused by low vertical rigidity of the steel tracks, dynamic deformation of the steel tracks can be controlled well, generation of steel track wave can be reduced, reaction on vehicles of the steel tracks is reduced, riding comfort is improved, potential hazards of fatigue fracture formed by overlarge deformation of the steel tracks are avoided, and driving safety is guaranteed.
Description
Technical field
The utility model belongs to the track vibration damping denoising technical field, relates generally to a kind of multidirectional Damping fastening of rail, especially is applicable to ew lines laying or old line transformations such as city underground, light rail, inter-city passenger rail and high-speed railway traffic.
Background technology
Use vibration and noise reduction fastener and be and administer the vibration that produces in the City Rail Transit System running and a kind of effective means of noise pollution.Fastener system design and diversity structure according to the difference constraint position to rail, can be divided into foot constraint formula and web of the rail constraint formula.Wherein web of the rail constraint formula fastener retrains rail web of the rail position; Rail is in suspended state during operate as normal; The suffered torsional moment of this fastener system is obviously little than foot constraint formula; Lower vertical stiffness can be obtained, the fastener system isolation effect that vibration is propagated to sub rail foundation to wheel-rail impact can be obviously improved.But this structure also has some shortcomings; The reduction of vertical stiffness; Though improved the vibration isolation effect, increased the vertical distortion of rail, aggravated the rail wave degree, and then increased rail vibration and noise radiation; And increased the reaction of building on the steel track to track, reduced riding comfort; Because rail is in suspended state, the rail distortion has increased rail because the tired possibility that fracture takes place has increased traffic safety hidden danger greatly during train driving.
Usually foot constraint formula Damping fastening is avoided rail because the excessive hidden danger that causes fatigue fracture of distortion because the rail foot is withheld by spring, and vertical stiffness is bigger, though controlled the vertical distortion of rail, rail is carried out effective support; But effectiveness in vibration suppression is lower; And this kind fastener just plays damping vibration attenuation to rail on vertical; Can't realize vibration-damping function in other directions; Resonance or other vibrational energies that rail is produced in vibration frequency range can't play the effect that absorbs or transform, and can not play good inhibition to rail by the noise radiation that vibration produces.
The utility model content
For addressing the above problem, the purpose of the utility model is the multidirectional Damping fastening that proposes a kind of rail.
The utility model adopts following technical scheme for accomplishing the foregoing invention task:
A kind of multidirectional Damping fastening of rail, the ultromotivity shock absorption system that multidirectional Damping fastening had are three groups that corresponding every one steel rail is provided with; Described ultromotivity shock absorption system comprises nonmetal flexible member and is embedded in the nonmetal flexible member, at least one resonant mass gauge block, and the density of this resonant mass gauge block is greater than the density of nonmetal flexible member; The nonmetal flexible member I of two groups of ultromotivity shock absorption systems, the nonmetal flexible member II waist that is symmetricly set on every one steel rail wherein, and through connecting support or other can act on the parts of nonmetal flexible member I, nonmetal flexible member II or the both sides waist that structure is clamped in rail; The profile kiss of the upper surface of the profile of described nonmetal flexible member I, nonmetal flexible member II and rail contact surface and the outline of rail waist and orbiting end plate, the soffit of tread plate is joined; The 3rd group of ultromotivity shock absorption system is the nonmetal flexible member III that is arranged between the rail flange of rail and the base plate, and nonmetal flexible member III and the rail flange of rail fit tightly; Parts or structure that described connection support or other can act on nonmetal flexible member I, nonmetal flexible member II are fixed on sub rail foundation or the sleeper.
Described resonant mass gauge block can be embedded in nonmetal elastic component I, nonmetal elastic component II, the nonmetal elastic component III fully, also can partly be exposed to outside the nonmetal elastic component.
Said connection support or other parts or the structure that can act on nonmetal flexible member I, nonmetal flexible member II that is positioned at the rail both sides is separable setting.
The said connection support that is arranged in the rail both sides or other parts that can act on nonmetal flexible member I, nonmetal flexible member II or structure one of them and base plate are fixing inseparable, and another is separable setting.
Fluted on non-metal elastomers I, the nonmetal flexible member II, connecting support and non-metal elastomers fitting face has convexity, makes the non-metal elastomers element and is connected support and cooperates connection.
On described non-metal elastomers I, nonmetal flexible member II, has boss; Connect have on the support with non-metal elastomers I, nonmetal flexible member II on the boss kiss that the had draw-in groove of joining, make non-metal elastomers and connect between connect.
On described non-metal elastomers I, nonmetal flexible member II, have boss, connect have on parts or the structure that support or other can act on nonmetal flexible member I, nonmetal flexible member II with non-metal elastomers I, nonmetal flexible member II on the boss kiss that the had draw-in groove of joining.
On described non-metal elastomers I, nonmetal flexible member II, have draw-in groove, connect have on parts or the structure that support or other can act on nonmetal flexible member I, nonmetal flexible member II with non-metal elastomers I, nonmetal flexible member II on the draw-in groove kiss that the had boss of joining.
Said connection support or other can act on the parts of nonmetal flexible member I, nonmetal flexible member II or the lower end of structure is fixed in the guide groove of base plate; And be located through the location voussoir that inserts in the groove of base plate two ends, described base plate is fixed on sub rail foundation or the sleeper.
Heighten pad connecting to be provided with between parts or structure and the base plate that support or other can act on nonmetal flexible member I, nonmetal flexible member II.
Height adjusting cushion plate and coupling backing plate are set between described base plate and sub rail foundation; Wherein said height adjusting cushion plate is between base plate and coupling backing plate; Described coupling backing plate between height adjusting cushion plate and sub rail foundation, by railway spike with base plate, height adjusting cushion plate, coupling shim on sub rail foundation.
Said connection support or other can act on the parts of nonmetal flexible member I, nonmetal flexible member II or the lower end of structure is embedded in the sub rail foundation.
The multidirectional Damping fastening of a kind of rail that the utility model proposes; Through the generation that the ultromotivity shock absorption system is controlled the rail dynamic deformation and reduced the rail wave degree being set simultaneously at the rail both sides waist and the flange of rail; Can effectively overcome rail because of low rail vibration that causes of vertical stiffness and noise increase problem; Absorb, reduce rail vibration and noise radiation from rail both sides and three aspects, bottom, reduced the reaction of rail, improved riding comfort vehicle; The flange of rail and nonmetal elastic component II are combined closely in addition, have avoided rail because of being out of shape the hidden danger of excessive formation fatigue fracture, guarantee driving safety; The utility model simple in structure; It is convenient to install, and effect of vibration and noise reduction is good, and cost performance is high; Rail damping sheet, rail dynamic vibration absorber etc. can be effectively substituted, engineerings such as city underground, light rail can be widely used in.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the sectional view of flexible member I in the utility model.
Fig. 3 and Fig. 4 are for being connected support and non-metal elastomers, the non-metal elastomers sketch map that links in the utility model.
Fig. 5 is embedded in sketch map in the sub rail foundation for the lower end that connects support in the utility model.
Among the figure: 1, rail, 2, the non-metal elastomers I, 3, the non-metal elastomers II, 4, resonant mass gauge block a, 5, resonant mass gauge block b, 6, connect support; 7, bolt, 8, heighten pad, 9, base plate, 10, non-metal elastomers III II, 11, resonant mass gauge block c, 12, resonant mass gauge block d; 13, height adjusting cushion plate, 14, the coupling backing plate, 15, railway spike, 16, sub rail foundation, 17, the location carves piece; 18, convexity, 19 grooves, 20, boss, 21, draw-in groove, 22, pre-buried part.
The specific embodiment
In conjunction with accompanying drawing and specific embodiment the utility model is explained:
Like Fig. 1, shown in Figure 2, a kind of multidirectional Damping fastening of rail, described multidirectional Damping fastening mainly comprises the ultromotivity shock absorption system; Corresponding every one steel rail 1 is provided with three groups of ultromotivity shock absorption systems, and described ultromotivity shock absorption system comprises nonmetal flexible member and be embedded in the nonmetal flexible member, at least one resonant mass gauge block; Wherein the nonmetal flexible member I 2 of two groups of ultromotivity shock absorption systems, nonmetal flexible member II 3 are symmetricly set on the waist of every one steel rail 1 and clamp rail from rail 1 both sides waist respectively; The profile kiss of the upper surface of the profile of described nonmetal flexible member I 2, nonmetal flexible member II 3 and rail contact surface and the outline of rail waist and orbiting end plate, the soffit of tread plate is joined, and parts or the structure that can act on nonmetal flexible member I 2, nonmetal flexible member II 3 through connection support or other makes nonmetal flexible member I 2, nonmetal flexible member II 3 from rail 1 both sides waist rail clamped; In nonmetal flexible member I 2, nonmetal flexible member II 3, all be inlaid with resonant mass gauge block a4, resonant mass gauge block b5; Form ultromotivity shock absorption system to rail 1; When vibration takes place in rail 1; Can suppress, shift or absorb the vibrational energy from rail 1, decay rail amplitude reduces the noise radiation that rail causes because of vibration; Simultaneously,, also reduced the reaction of 1 pair of vehicle of rail, improved riding comfort owing to suppressed the generation and the aggravation of rail wave degree; The 3rd group of ultromotivity shock absorption system is the nonmetal flexible member III 10 that is arranged between the rail flange of rail and the base plate 9, and nonmetal flexible member III 10 fits tightly with the rail flange of rail; In described nonmetal flexible member III 10, be inlaid with resonant mass gauge block c11, resonant mass gauge block d12; Corresponding nonmetal flexible member I 2, nonmetal flexible member II 3 are provided for providing for nonmetal flexible member I 2, nonmetal flexible member II 3 the connection support 6 of clamping force respectively in the both sides of rail 1; In conjunction with Fig. 3, it is protruding 18 that the upper end of said connection support 6 has, respectively with nonmetal flexible member I 2, nonmetal flexible member II 3 on groove 19 cooperate; The lower end of said connection support 6 is fixed in the guide groove of base plate 9, and is located through the location voussoir that inserts in the groove of base plate two ends; Between connection support 6 and base plate 9, be provided with and heighten pad 8; The lower end of said connection support 6 is fixed on the base plate 9; To connect on the guide groove that support 6 is fixed on base plate 9 by bolt 7, when not tightening, bolt 7 can drive heighten pad 8 be connected support 6 in the guide groove of base plate 9 along rail 1 vertical being free to slide; Not only can regulate the clamping force of elastic body, all right buffer rail distance through regulating connection support 6 to the rail waist; Height adjusting cushion plate 13 and coupling backing plate 14 are set between described base plate 9 and sub rail foundation 16; Wherein said height adjusting cushion plate 13 is between base plate 9 and coupling backing plate 14; Described coupling backing plate 14 is fixed on base plate 9, height adjusting cushion plate 13, coupling backing plate 14 on the sub rail foundation 16 by railway spike 15 between height adjusting cushion plate 13 and sub rail foundation 16.
The connected mode of said resonant mass gauge block a4, resonant mass gauge block b5 and nonmetal elastic component I 2, nonmetal elastic component II 3; The connected mode of resonant mass gauge block c11, resonant mass gauge block d12 and nonmetal flexible member III 10; But gluing connecing; Or vulcanize bondingly, perhaps be not bonding alternate manner; The shape of described resonant mass gauge block a4, resonant mass gauge block b5, resonant mass gauge block c11, resonant mass gauge block d12 can be respectively cuboid, cylinder or prism; Or be the geometry of Else Rule; Or be irregular geometry; The a4 of resonant mass gauge block described in this embodiment, resonant mass gauge block b5 are shaped as cylinder; And the diameter of resonant mass gauge block a4, resonant mass gauge block b5 is different, and said resonant mass gauge block c11, resonant mass gauge block d12 are shaped as cuboid, and the sectional area of resonant mass gauge block c11, resonant mass gauge block d12 is identical.
Described resonant mass gauge block a4, resonant mass gauge block b5, resonant mass gauge block c11, the employed material of resonant mass gauge block d12 can be all metal, or be all nonmetal, or metal and nonmetal shared.
The structure of the multidirectional steel rail vibration damping fastener of the utility model; Its bind mode that connects support and base plate can be above-mentioned bolted on connection; Connect but be not limited only to bolt, also can adopt metal spring, shell fragment etc., or various abilities such as draw-in groove will connect the structure of support and base plate connection.
The another kind of syndeton that connects support and non-metal elastomers, non-metal elastomers and base plate and sub rail foundation that provides as shown in Figure 5; Among this embodiment; The upper end of said connection support 6 is connected with nonmetal flexible member I 2, nonmetal flexible member II 3 respectively, non-metal elastomers I 2, nonmetal flexible member II 3 and to be connected support 6 be that plug-in type connects; In conjunction with Fig. 4, on described non-metal elastomers I 2, nonmetal flexible member II 3, have draw-in groove 21, connect have on the support with non-metal elastomers I, nonmetal flexible member II on the draw-in groove kiss that the had boss 20 of joining; The lower end of said connection support 6 is fixed in the guide groove of base plate 9, and is located through the location voussoir 17 that inserts in the groove of base plate two ends; Between connection support 6 and base plate 9, be provided with and heighten pad 8, the pre-buried part 22 in the lower end of said connection support 6 is embedded in the sub rail foundation 16.
Claims (9)
1. the multidirectional Damping fastening of a rail is characterized in that: the ultromotivity shock absorption system that multidirectional Damping fastening had is three groups that corresponding every one steel rail is provided with; Described ultromotivity shock absorption system comprises nonmetal flexible member and is embedded in the nonmetal flexible member, at least one resonant mass gauge block, and the density of resonant mass gauge block is greater than the density of nonmetal flexible member; Wherein the nonmetal flexible member I (2) of two groups of ultromotivity shock absorption systems, nonmetal flexible member II (3) are symmetricly set on the waist of every one steel rail (1), and can act on the parts of nonmetal flexible member I (2), nonmetal flexible member II (3) or the both sides waist that structure is clamped in rail through connection support (6) or other; The profile kiss of the upper surface of the profile of described nonmetal flexible member I (2), nonmetal flexible member II (3) and rail contact surface and the outline of rail waist and orbiting end plate, the soffit of tread plate is joined; The 3rd group of ultromotivity shock absorption system is for to be arranged on the nonmetal flexible member III (10) between the rail flange of rail and the base plate (9), and nonmetal flexible member III (10) fits tightly with the rail flange of rail; Parts or structure that described connection support (6) or other can act on nonmetal flexible member I, nonmetal flexible member II are fixed on sub rail foundation (16) or the sleeper.
2. the multidirectional Damping fastening of a kind of rail according to claim 1; It is characterized in that: described resonant mass gauge block can be embedded in nonmetal elastic component I (2), nonmetal elastic component II (3), the nonmetal elastic component III (10) fully, also can partly be exposed to outside the nonmetal elastic component.
3. the multidirectional Damping fastening of a kind of rail according to claim 1, it is characterized in that: said connection support (6) or other parts or the structure that can act on nonmetal flexible member I, nonmetal flexible member II that is positioned at the rail both sides is separable setting.
4. the multidirectional Damping fastening of a kind of rail according to claim 1; It is characterized in that: the said connection support (6) that is arranged in the rail both sides or other parts that can act on nonmetal flexible member I, nonmetal flexible member II or structure one of them and base plate (9) are fixing inseparable, and another is separable setting.
5. the multidirectional Damping fastening of a kind of rail according to claim 4; It is characterized in that: the lower end of said connection support (6) is fixed in the guide groove of base plate (9); And be located through the location voussoir (17) that inserts in the groove of base plate two ends, described base plate (9) is fixed on sub rail foundation (16) or the sleeper.
6. the multidirectional Damping fastening of a kind of rail according to claim 4 is characterized in that: heighten pad (8) connecting between parts or structure and the base plate (9) that support (6) or other can act on nonmetal flexible member I, nonmetal flexible member II setting.
7. the multidirectional Damping fastening of a kind of rail according to claim 5; It is characterized in that: height adjusting cushion plate (13) and coupling backing plate (14) are set between described base plate (9) and sub rail foundation (16); Wherein said height adjusting cushion plate (13) is positioned between base plate (9) and the coupling backing plate (14); Described coupling backing plate (14) is positioned between height adjusting cushion plate (13) and the sub rail foundation (16), by railway spike (15) base plate (9), height adjusting cushion plate (13), coupling backing plate (14) is fixed on the sub rail foundation (16).
8. the multidirectional Damping fastening of a kind of rail according to claim 1, it is characterized in that: said connection support (6) or other can act on the parts of nonmetal flexible member I, nonmetal flexible member II or the lower end of structure is embedded in the sub rail foundation (16).
9. the multidirectional Damping fastening of a kind of rail according to claim 1 is characterized in that: non-metal elastomers I (2), nonmetal flexible member II (3) and be connected support (6) or parts or structure that other can act on nonmetal flexible member I, nonmetal flexible member II are that plug-in type connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120439921XU CN202380369U (en) | 2011-11-09 | 2011-11-09 | Multi-directional vibration reduction fastener of steel track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120439921XU CN202380369U (en) | 2011-11-09 | 2011-11-09 | Multi-directional vibration reduction fastener of steel track |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380369U true CN202380369U (en) | 2012-08-15 |
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| CN201120439921XU Expired - Lifetime CN202380369U (en) | 2011-11-09 | 2011-11-09 | Multi-directional vibration reduction fastener of steel track |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295517A (en) * | 2018-03-21 | 2019-10-01 | 洛阳双瑞橡塑科技有限公司 | A kind of resonant mode Damping fastening |
| CN110295518A (en) * | 2018-03-21 | 2019-10-01 | 洛阳双瑞橡塑科技有限公司 | A kind of resonant mode Damping fastening |
| CN110952393A (en) * | 2019-12-11 | 2020-04-03 | 成都轨道建设管理有限公司 | Rail fixing seat for rail transit |
| CN110952394A (en) * | 2019-10-28 | 2020-04-03 | 建湖金洋科技有限公司 | A rail shock absorber |
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | A multi-directional hydraulic vibration-reducing force-vibration absorber structure for steel rails |
| CN113026443A (en) * | 2019-12-09 | 2021-06-25 | 洛阳双瑞橡塑科技有限公司 | Steel rail vibration damper |
| CN113818290A (en) * | 2021-11-22 | 2021-12-21 | 成都中拓科技有限公司 | Continuous support floating rail type fastener system |
| CN114541185A (en) * | 2022-04-25 | 2022-05-27 | 成都中拓科技有限公司 | Vibration absorption energy dissipation vibration reduction backing plate |
| CN116815556A (en) * | 2023-07-27 | 2023-09-29 | 河北中烁轨道科技有限公司 | A rail-supported vibration-absorbing fastener system and its construction technology |
| WO2024021445A1 (en) * | 2022-07-23 | 2024-02-01 | 浙江天铁实业股份有限公司 | Steel rail vibration isolation system |
| CN118896109A (en) * | 2024-10-09 | 2024-11-05 | 三亚乾泰石油机械技术有限公司 | Anti-loosening nut |
-
2011
- 2011-11-09 CN CN201120439921XU patent/CN202380369U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295518A (en) * | 2018-03-21 | 2019-10-01 | 洛阳双瑞橡塑科技有限公司 | A kind of resonant mode Damping fastening |
| CN110295517A (en) * | 2018-03-21 | 2019-10-01 | 洛阳双瑞橡塑科技有限公司 | A kind of resonant mode Damping fastening |
| CN110952394B (en) * | 2019-10-28 | 2021-05-28 | 建湖金洋科技有限公司 | A rail shock absorber |
| CN110952394A (en) * | 2019-10-28 | 2020-04-03 | 建湖金洋科技有限公司 | A rail shock absorber |
| CN113026443A (en) * | 2019-12-09 | 2021-06-25 | 洛阳双瑞橡塑科技有限公司 | Steel rail vibration damper |
| CN110952393A (en) * | 2019-12-11 | 2020-04-03 | 成都轨道建设管理有限公司 | Rail fixing seat for rail transit |
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | A multi-directional hydraulic vibration-reducing force-vibration absorber structure for steel rails |
| CN113818290A (en) * | 2021-11-22 | 2021-12-21 | 成都中拓科技有限公司 | Continuous support floating rail type fastener system |
| CN113818290B (en) * | 2021-11-22 | 2022-01-28 | 成都中拓科技有限公司 | Continuous support floating rail type fastener system |
| CN114541185A (en) * | 2022-04-25 | 2022-05-27 | 成都中拓科技有限公司 | Vibration absorption energy dissipation vibration reduction backing plate |
| WO2024021445A1 (en) * | 2022-07-23 | 2024-02-01 | 浙江天铁实业股份有限公司 | Steel rail vibration isolation system |
| CN116815556A (en) * | 2023-07-27 | 2023-09-29 | 河北中烁轨道科技有限公司 | A rail-supported vibration-absorbing fastener system and its construction technology |
| CN118896109A (en) * | 2024-10-09 | 2024-11-05 | 三亚乾泰石油机械技术有限公司 | Anti-loosening nut |
| CN118896109B (en) * | 2024-10-09 | 2025-01-21 | 三亚乾泰石油机械技术有限公司 | Anti-loosening nut |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |