CN202705817U - Vibration-damping fastener - Google Patents
Vibration-damping fastener Download PDFInfo
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- CN202705817U CN202705817U CN 201220224350 CN201220224350U CN202705817U CN 202705817 U CN202705817 U CN 202705817U CN 201220224350 CN201220224350 CN 201220224350 CN 201220224350 U CN201220224350 U CN 201220224350U CN 202705817 U CN202705817 U CN 202705817U
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- iron gasket
- bolt hole
- boss
- lower iron
- gasket
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Abstract
The utility model discloses a vibration-damping fastener which comprises an upper iron gasket sheet, a rubber gasket, a lower iron gasket sheet, wherein the rubber gasket is arranged between the upper iron gasket sheet and the lower iron gasket sheet, the rubber gasket is completely bonded with the upper iron gasket sheet and the lower iron gasket sheet, the rubber gasket is a vulcanized rubber gasket, the lower iron gasket sheet comprises bosses of the lower iron gasket sheet, a groove is enclosed by the bosses of the lower iron gasket sheet, the area of the groove opening is larger than the area of the upper iron gasket sheet, the groove is placed at the central part of the lower iron gasket sheet, the upper iron gasket sheet is fixed inside the groove when the fastener is assembled, and the rubber gasket is placed between the upper iron gasket sheet and the lower iron gasket sheet.
Description
Technical field
The utility model relates to the track technology, refers to especially a kind of Damping fastening.
Background technology
Track traffic is a kind of mode of utilizing track train to carry out personnel transportation, it has, and freight volume is large, speed fast, safety, on schedule, the characteristics such as protection of the environment, energy conservation and land used, track traffic is the key that urban transport problems is solved.Track traffic comprises subway, light rail, tram etc., and wherein subway, light rail become the at present new traffic tool of fast development of China.
Speed-raising along with track traffic, haulage device has also produced some new problems in the process of advancing, wherein, the vibration between wheel and the track is one of significant problem, and the noise that simultaneously vibration produces has also caused bad impact to townsfolk's life.
For the vibration that reduces between train and the track has problems, generally between track and wheel, adopt shock absorber (Damping fastening) to reduce vibration.Shock-absorption fastener of the prior art, the parts that adopt often comprise baroque ironware, this Damping fastening can reduce the vibration between wheel and the track, but complicated structure causes its installation steps complicated, also is not easy to simultaneously change and safeguard.
The utility model content
In view of this, the purpose of this utility model is to propose a kind of Damping fastening.This Damping fastening is simple in structure, also has better effectiveness in vibration suppression simultaneously.
Based on the Damping fastening that above-mentioned purpose the utility model provides, comprise iron gasket, rubber pad, lower iron gasket; Described rubber pad is between upper iron gasket and lower iron gasket, and is and fully bonding with described upper iron gasket and lower iron gasket; Described rubber pad is vulcanized rubber mat; Described lower iron gasket comprises lower iron gasket boss, and described lower iron gasket boss surrounds into a groove, and the aperture area of this groove is greater than the area of described upper iron gasket; Groove is positioned at the middle part of described lower iron gasket, and under the assembled state, described upper iron gasket is fixed in the described groove, and described rubber pad is between upper iron gasket and lower iron gasket.
Optionally, the making material of described upper iron gasket, lower iron gasket is ductile iron, and the making material of described rubber pad is natural rubber.
Optionally, described upper iron gasket comprises that side is along boss, the first boss, bolt hole limit boss, bolt hole, described side is positioned at the described upper iron gasket left and right sides along boss, spiro keyhole position is in the right and left of described upper iron gasket longitudinal axis, described bolt hole limit boss is positioned at bolt hole near the edge of longitudinal axis, and the described bolt hole limit boss of the left and right sides has consisted of rail support groove; Described the first boss in bolt hole and side along between the boss.
Optionally, described the first boss is provided with four, and its position is symmetrical about the longitudinal axis in the described Damping fastening plane and axis of pitch.
Optionally, the length of bolt hole limit boss is 80mm, the lateral length basic size of the rail support groove between the boss of bolt hole limit is 169mm, described length variation is ± 1mm, the top of bolt hole limit boss is 22mm to the distance of described rail support groove bottom surface, the inwall of described rail support groove inclinedly opens, described inwall bottom is poor to the lateral separation on top to be 1mm, described rail support groove bottom surface is 41mm to described Damping fastening assembly bottom surface apart from basic size, deviation is ± 1.5mm that the width of bolt hole limit boss end face is 10mm; Ultimate range between the first boss of described longitudinal axis homonymy is 110mm, the end face of the first boss is that the plane of 7mm and arc surface that two sections projected lengths are respectively 16mm and 4mm consist of by a segment length, the radius of curvature of described two sections arc surfaces equates that the ultimate range between the first boss of homonymy and the bolt hole limit boss is 68mm.
Optionally, described lower iron gasket boss comprises the second boss, side edge, and described lower iron gasket comprises that also side is along bolt hole, sawtooth platform, bolt hole; Described the second boss is positioned at lower iron gasket left and right sides along upper, and its length is less than the left and right sides edge lengths of described lower iron gasket; Side is provided with four along being trapezoidal, is positioned at the transverse sides two ends of lower iron gasket; Along being provided with side along bolt hole, described side is mounting hole along bolt hole in side, is provided with the sawtooth platform in side along the top and bottom of bolt hole; Corresponding with the position of described bolt hole after the position assembling of bolt hole on lower iron gasket.
Optionally, the lateral length of described lower iron gasket is 425mm, and the upper base on described trapezoidal lateral edge is long to be 70mm, and the upper base on four side edges longitudinally distance is 300mm; Side is 26mm along the width of bolt hole, and its transverse center span is 245mm; The width of sawtooth platform is 6mm; The bolt hole of bolt hole and described upper iron gasket is overlapping after assembling to be bolt hole, the aperture of described bolt hole is 24mm, the degree of depth of bottom circular open is 9mm, the degree of depth of changeover portion is 5mm, the spacing of described circular open and described mounting hole lower surface is 5mm, described rail support groove bottom surface is 25mm apart from the distance of described circular open lower end, and the hole heart of bolt hole is 21mm apart from the minimum range of described rail support groove bottom surface, and the described hole heart is 20mm apart from the beeline of homonymy the first boss.
Optionally, the quality of described rubber pad is 1100-1500g.
In optional embodiment, the overall height of assembly is 70-85mm.
In the actual fabrication process, the dimensional errors of described upper iron gasket and lower iron gasket can be no more than ± 5mm.
Can find out that from above the Damping fastening that the utility model provides has been realized good effectiveness in vibration suppression when adopting simple structure, installation process is simple, is conducive to change and safeguard; Property indices all owing to the technical requirement of country, has more significant vibration absorbing low noise effect.
Damping fastening provided by the utility model, the elasticity of its rubber sheet gasket in use can be given full play to, and reaches 25 years application life, and in the time limit in application life, the variation of its sound rigidity is not more than 20%.In addition, the structure that this Damping fastening adopts can effectively be avoided the slip of parts in the use procedure and come off, and has higher safety.
Description of drawings
Fig. 1 is the schematic diagram of iron gasket on the Damping fastening of the utility model embodiment;
Fig. 2 is the schematic diagram of iron gasket under the Damping fastening of the utility model embodiment;
Fig. 3 is the Damping fastening package assembly elevation of the utility model embodiment;
Fig. 4 is the Damping fastening package assembly top view of the utility model embodiment.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
Damping fastening provided by the utility model comprises iron gasket, rubber pad, lower iron gasket; Described rubber pad is between upper iron gasket and lower iron gasket, and is and fully bonding with described upper iron gasket and lower iron gasket; Described rubber pad is vulcanized rubber mat; Described lower iron gasket comprises lower iron gasket boss, and described lower iron gasket boss surrounds into a groove, and the aperture area of this groove is greater than the area of described upper iron gasket; Described groove is positioned at the middle part of described lower iron gasket, and under the assembled state, described upper iron gasket is fixed in the described groove, and described rubber pad is fixed between iron gasket and the lower iron gasket.
Following embodiment has specifically described the size and dimension feature of Double layer iron pad.
Fig. 1 is the schematic diagram of iron gasket 1 on the Damping fastening of the utility model embodiment.Upper iron gasket 1 is roughly rectangle in the present embodiment.If the minor face of upper iron gasket 1 is that limit, the left and right sides, long limit are upper bottom, corresponding direction is made as left and right directions or horizontal, above-below direction or vertical.After Damping fastening is in the present embodiment installed, described direction of vertically extending corresponding to train rail.Upper iron gasket 1 upper surface is provided with a plurality of boss and bolt hole, lays respectively at the left and right sides of iron gasket 1, and is symmetrical about the axis of pitch line of upper iron gasket 1, symmetrical about the longitudinal axis of iron gasket 1 simultaneously.Described upper iron gasket comprises that side is along boss 11, the first boss 12, bolt hole limit boss 13; Upper iron gasket hole comprises two bolts hole 14.Short edge, the left and right sides of upper iron gasket 1 projection forms described side along boss 11; Side is isometric with the minor face of upper iron gasket 1 along boss 11.The projection of the first boss 12 is roughly rectangle, is provided with four, and its position is symmetrical about axis of pitch about the center line bilateral symmetry of upper iron gasket 1; In the present embodiment, the ultimate range between the first boss 12 of longitudinal axis homonymy is 110mm.Bolt hole limit boss 13 is provided with two, lays respectively at the left side of right side bolt hole 14 and the right side of left side bolt hole 14; In the present embodiment, the length of bolt hole limit boss 13 is 80mm.Bolt hole 14 is mounting hole, and both sides are circular arc about it, and the right and left is straight line, and the hole heart of two bolts hole is arranged on the axis of pitch, and is symmetrical about longitudinal axis.
Fig. 2 is the schematic diagram of iron gasket 2 under the Damping fastening of the utility model embodiment.Lower iron gasket boss comprises that the second boss 21, side are along 22; In addition, lower iron gasket 2 comprises that also side is along bolt hole 24, sawtooth platform 25, bolt hole 26; Described lower iron gasket boss surrounds into groove 23, and the aperture area of groove 23 is greater than the area of upper iron gasket.The minor face of setting iron gasket 2 is that limit, the left and right sides, long limit are upper bottom, and corresponding direction is made as left and right directions or horizontal, above-below direction or vertical.In the present embodiment, lower iron gasket 2 horizontal length are 425mm, and the second boss 21 is positioned at the side of two minor faces along upper, and its length is less than the bond length of lower iron gasket 2.Side has four along 22, lays respectively at the transverse sides two ends of lower iron gasket 2, is roughly trapezoidally, and in the present embodiment, side is 70mm along 22 upper base is long, and side is 300mm along the fore-and-aft distance between 22 the upper base.Be provided with side along bolt hole 24 in side along 22, described side is mounting hole along bolt hole 24, is provided with sawtooth platform 25 in side along the top and bottom of bolt hole 24.Side is 245mm along the transverse center span of bolt hole 24, and side is 26mm along the width of bolt hole 24, and the width of sawtooth platform 25 is 6mm.At the middle part of lower iron gasket 2, be provided with a groove 23, the size of groove 23 is greater than the size of the upper iron gasket 1 shown in Fig. 1, and upper iron gasket 1 can be put into groove 23.The position of bolt hole 26 is corresponding with the position of the bolt hole 14 shown in Fig. 1.
Fig. 3 A is the Damping fastening package assembly elevation of the utility model embodiment, and the sectional view at bolt hole 14 places.The Damping fastening that present embodiment provides, its assembled height are 72mm.As shown in FIG., top, the cross section end face of described the first boss 12 is made of plane and arc surface, and described arc surface comprises two sections arc surfaces that radius of curvature is identical, in the present embodiment, the length on described plane is 7mm, and the distance between two end points of described arc surface is respectively 16mm, 4mm; Two ends, end face left and right sides difference in height is 2.5mm.Having formed lateral length between the bolt hole limit boss 13 of the right and left is the rail support groove of 168-170mm, the width of rail support groove described in the present embodiment is roughly 169mm, the top of bolt hole limit boss 13 is 22mm to the distance of described rail support groove bottom surface, the left and right sides inwall of described rail support groove omits low dip so that the opening of described rail support groove opens slightly simultaneously, the slant range of described inwall from the bottom to the top is 1mm, and the distance from the bottom surface of described rail support groove to the assembly bottom surface is 41 ± 1.5mm.The end face width of bolt hole limit boss 13 is 10mm.The bolt hole 31 of assembly is mounting hole, is overlapped by the bolt hole 26 shown in Fig. 2 and the bolt hole 14 shown in Fig. 1; The aperture is 24mm, the degree of depth of bottom circular open is 9mm, the degree of depth of changeover portion is 5mm, the spacing of described circular open and described mounting hole lower surface is 5mm, described rail support groove bottom surface is 25mm apart from the distance of described circular open lower end, the hole heart of bolt hole 31 is 21mm apart from the minimum range of described rail support groove bottom surface, and the described hole heart is 20mm apart from the beeline of homonymy the first boss 12, and the first boss 12 of homonymy and the ultimate range between the bolt hole limit boss 13 are 68mm.
The size of upper iron gasket recited above and lower iron gasket allows certain deviation, and this deviation can be formulated according to the design needs, for example, can set this deviation and be no more than ± 5mm.
Fig. 3 B is the Damping fastening package assembly top view of the utility model embodiment.Between upper iron gasket 1 and lower iron gasket 2, place rubber pad, and upper iron gasket 1, described rubber pad, lower iron gasket 2 are bonded together fully, rubber pad is carried out vulcanizing treatment, utilize the rubber compressive strain of sulfuration below upper iron gasket 1, obtain elasticity.
Damping fastening provided by the utility model, iron gasket 1, rubber pad, lower iron gasket 2 all can be selected suitable making material according to the needs of environment for use on it.In the present embodiment, iron gasket 1 and lower iron gasket 2 use ductile iron to make foundry goods in the use; Further, select QT450-10 ductile iron, its mechanical performance satisfies the requirement of GB1348-2009.Described cast(ing) surface should be smooth, bright and clean, without obviously sand holes, corrosion or other defectives that significantly reduces intensity and affect outward appearance, such as pore, depression, crackle, burning into sand with loosen etc.; Described foundry goods should be without foreign material such as molding sand, oxide skin, overlap, burrs simultaneously; The surface antirust processing of should painting.Described rail support groove should not have the degree of depth greater than the defective of 1mm, and the hole on other surface point should be less than that 3 places, the degree of depth are no more than 2mm, diameter is not more than 5mm.The dead head ledge be should give rejecting, the remaining outstanding 1mm that is no more than.Described rubber pad uses natural rubber, and its quality is 1100-1500g, and employed rubber pad quality is 1350g in the present embodiment, its surface is should be smooth smooth, flawless, without the obvious visible impurity of naked eyes.The oeverall quality of assembly is about 17.5kg.
Can find out that from above Damping fastening provided by the utility model is applicable to have the location of medium vibration damping requirement, compares traditional Damping fastening, it is simple in structure, is convenient to the operations such as installation, replacing; And has excellent damping property, electrical insulation capability and long application life.By detections such as effectiveness in vibration suppression contrast test, falling weight impact test, field trial, fatigue tests, its impact resistance, fatigue resistance are far superior to all technical of China.Simultaneously, the hardness of rubber pad, hot strength, distortion, the performance such as anti-aging also all are better than all technical, have good oil resistant, corrosion resistance, adapt to various boisterous ambient conditionss.Damping fastening provided by the utility model has excellent gauge hold facility, can keep gauge when thermal expansion and rail fracture, and its vertical and horizontal adjustment is simpler and make things convenient for.Adopt the bolt design of slip-off preventing, so that change, keep in repair more easy.Because Damping fastening compact conformation provided by the utility model can reduce the earthwork amount, reduce construction costs; Also have better noise reduction effect, within service life, require the vibration sensing building place in vibration isolation location, by train by the time pass to the circular tunnel wall the Z level of shaking reduce more than 5 decibels than traditional Damping fastening in general vibration damping location.Vertical and under 8KN-40KN, vertical load 4KN-20KN, through after 3,000,000 load cycle, Damping fastening provided by the utility model is without any destruction and cracking; And its quiet stiffness variation is less than 10%, and simultaneously monolateral gauge expansion is no more than 3mm.Detect through overtesting, the quiet rigidity of Damping fastening provided by the utility model is 18KN/mm-22KN/mm, and quiet ratio of rigidity is no more than 1.4; The output ratio of Q-switching to free running is no more than 1.2; The sulfuration adhesion stress is not less than 80KN; Its resistance is greater than 10
8Ohm; Vibration isolating effect is 5 ~ 8 decibels.These performance parameters all are far superior to the corresponding performance indications of country.In addition, Damping fastening provided by the utility model, be 25 years its application life, greater than traditional Damping fastening.
Those of ordinary skill in the field are to be understood that: the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a Damping fastening is characterized in that, comprises iron gasket (1), rubber pad, lower iron gasket (2); Described rubber pad is positioned between iron gasket (1) and the lower iron gasket (2), and fully bonding with described upper iron gasket (1) and lower iron gasket (2); Described rubber pad is vulcanized rubber mat; Described lower iron gasket comprises lower iron gasket boss, and described lower iron gasket boss surrounds into a groove (23), and the aperture area of this groove (23) is greater than the area of described upper iron gasket; Groove (23) is positioned at the middle part of described lower iron gasket, and under the assembled state, described upper iron gasket (1) is fixed in the described groove (23), and described rubber pad is positioned between iron gasket (1) and the lower iron gasket (2).
2. Damping fastening according to claim 1 is characterized in that, the making material of described upper iron gasket, lower iron gasket is ductile iron, and the making material of described rubber pad is natural rubber.
3. Damping fastening according to claim 1, it is characterized in that, described upper iron gasket comprises that side is along boss (11), the first boss (12), bolt hole limit boss (13), bolt hole (14), described side is positioned at the described upper iron gasket left and right sides along boss (11), bolt hole (14) is positioned at the right and left of described upper iron gasket longitudinal axis, described bolt hole limit boss (13) is positioned at bolt hole (14) near the edge of longitudinal axis, and the described bolt hole limit boss (13) of the left and right sides has consisted of rail support groove; Described the first boss (12) is positioned at bolt hole (14) and side along between the boss (11).
4. Damping fastening according to claim 3 is characterized in that, described the first boss (12) is provided with four, and its position is symmetrical about the longitudinal axis in the described Damping fastening plane and axis of pitch.
5. Damping fastening according to claim 3, it is characterized in that, the length of bolt hole limit boss (13) is 80mm, the lateral length basic size of the rail support groove between the bolt hole limit boss (13) is 169mm, described length variation is ± 1mm, the top of bolt hole limit boss (13) is 22mm to the distance of described rail support groove bottom surface, the inwall of described rail support groove inclinedly opens, described inwall bottom is poor to the lateral separation on top to be 1mm, described rail support groove bottom surface is 41mm to described Damping fastening assembly bottom surface apart from basic size, deviation is ± 1.5mm that the width of bolt hole limit boss (13) end face is 10mm; The ultimate range that is positioned between first boss (12) of described longitudinal axis homonymy is 110mm, the end face of the first boss (12) is that the plane of 7mm and arc surface that two sections projected lengths are respectively 16mm and 4mm consist of by a segment length, the radius of curvature of described two sections arc surfaces equates that first boss (12) of homonymy and the ultimate range between the bolt hole limit boss (13) are 68mm.
6. Damping fastening according to claim 1 is characterized in that, described lower iron gasket boss comprises the second boss (21), side along (22), and described lower iron gasket comprises that also side is along bolt hole (24), sawtooth platform (25), bolt hole (26); Described the second boss (21) is positioned at lower iron gasket left and right sides along upper, and its length is less than the left and right sides edge lengths of described lower iron gasket; Side is trapezoidal along (22), is provided with four, is positioned at the transverse sides two ends of lower iron gasket; Be provided with side along bolt hole (24) in side along (22), described side is mounting hole along bolt hole (24), is provided with sawtooth platform (25) in side along the top and bottom of bolt hole (24); Corresponding with the position of described bolt hole (14) after the position assembling of bolt hole (26) on lower iron gasket.
7. according to claim 3 or 6 described Damping fastenings, it is characterized in that the lateral length of described lower iron gasket is 425mm, described trapezoidal lateral is 70mm along the upper base of (22) is long, four sides along the upper base of (22) longitudinally distance be 300mm; Side is 26mm along the width of bolt hole (24), and its transverse center span is 245mm; The width of sawtooth platform (25) is 6mm; The bolt hole (14) of bolt hole (26) and described upper iron gasket is overlapping after assembling to be bolt hole (31), the aperture of described bolt hole (31) is 24mm, the degree of depth of bottom circular open is 9mm, the degree of depth of changeover portion is 5mm, the spacing of described circular open and described mounting hole lower surface is 5mm, described rail support groove bottom surface is 25mm apart from the distance of described circular open lower end, the hole heart of bolt hole (31) is 21mm apart from the minimum range of described rail support groove bottom surface, and the described hole heart is 20mm apart from the beeline of homonymy the first boss (12).
8. Damping fastening according to claim 1 and 2 is characterized in that, the quality of described rubber pad is 1100-1500g.
9. the described Damping fastening of any one is characterized in that according to claim 1-8, and the overall height of assembly is 70-85mm.
10. Damping fastening according to claim 9 is characterized in that, the dimensional errors of described upper iron gasket and lower iron gasket is no more than ± 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224350 CN202705817U (en) | 2012-05-17 | 2012-05-17 | Vibration-damping fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224350 CN202705817U (en) | 2012-05-17 | 2012-05-17 | Vibration-damping fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202705817U true CN202705817U (en) | 2013-01-30 |
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ID=47586136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220224350 Expired - Fee Related CN202705817U (en) | 2012-05-17 | 2012-05-17 | Vibration-damping fastener |
Country Status (1)
| Country | Link |
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| CN (1) | CN202705817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714623A (en) * | 2014-12-04 | 2016-06-29 | 瑞泰潘得路铁路技术（武汉）有限公司 | Fastener system for quick elastic strip ballast-less track iron washer |
-
2012
- 2012-05-17 CN CN 201220224350 patent/CN202705817U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714623A (en) * | 2014-12-04 | 2016-06-29 | 瑞泰潘得路铁路技术（武汉）有限公司 | Fastener system for quick elastic strip ballast-less track iron washer |
| CN105714623B (en) * | 2014-12-04 | 2017-07-14 | 瑞泰潘得路铁路技术（武汉）有限公司 | Quick elastic bar non-fragment orbit iron chair fastener system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150517 |
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| EXPY | Termination of patent right or utility model |