CN110468634B - Rail vibration damping fastener and installation method - Google Patents
Rail vibration damping fastener and installation method Download PDFInfo
- Publication number
- CN110468634B CN110468634B CN201910810413.9A CN201910810413A CN110468634B CN 110468634 B CN110468634 B CN 110468634B CN 201910810413 A CN201910810413 A CN 201910810413A CN 110468634 B CN110468634 B CN 110468634B
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- Prior art keywords
- elastic pad
- bearing plate
- rail bearing
- locking
- positioning boss
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/64—Rail fastenings gripping or encircling the sleeper
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
- E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a track vibration damping fastener which comprises a positioning boss (4), an elastic pad (3) and a locking mechanism; the elastic pad (3) comprises two layers of pads, and a rail bearing plate (2) is arranged between the two layers of pads; the locking mechanism comprises a locking nylon sleeve (6), wherein a preassembly protrusion (61) and a preassembly groove (22) are mutually buckled, and a flange (62) is pressed on the top of the rail bearing plate (2) so that the elastic pad (3), the rail bearing plate (2) and the locking nylon sleeve (6) form a preassembly structure; the pre-assembled structure penetrates through the boss structure on the positioning boss (4) and is arranged at the top of the track foundation, and the locking mechanism further comprises a locking cover plate (7) and a bolt assembly, and the positioning boss (4) and the pre-assembled structure are tightly pressed together. The invention also discloses a method for installing the track vibration damping fastener. The invention effectively realizes pre-assembly of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery, and realizes quick on-site installation.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a rail vibration damping fastener and an installation method.
Background
In recent years, the rapid development of a rail transit system brings convenience to people when the rail transit system is used for traveling, and meanwhile, the vibration and noise pollution caused by the rail transit system bring great trouble to the production and living of people.
Among the vibration reduction measures, the fastener vibration reduction is taken as a vibration reduction measure with low cost, good vibration reduction and noise reduction effect and convenient installation and maintenance, and is widely applied, and a series of rail fastener products with vibration reduction and noise reduction functions are already proposed in the market at present. Among the numerous damping fastener products, the separable double-layer damping fastener realizes the damping of two layers of elastomers, has excellent damping effect, and can conveniently replace invalid parts, so that a great deal of applications are obtained, the separable double-layer damping fastener is deeply favored by the market, and becomes a main stream product of the domestic damping fastener.
In order to realize the double-layer vibration reduction function of the fastener, the prior art discloses various technical schemes; the disclosed technical schemes are that double-layer vibration reduction functions are realized by matching two layers of iron backing plates with two layers of elastomers. In a double-layer fastener system, the upper iron pad plays a role of bearing and fixing steel rails, and the anchor bolts are screwed into nylon sleeves fixed in the ballast bed foundation and pressed on the lower iron pad, so that the fastener system is fixed on the ballast bed foundation.
According to the technical scheme in the prior art, the vibration reduction function of the two layers of elastomers can be fully exerted, and high vibration reduction amount is realized; however, there are the following problems:
1. The pre-buried double-layer vibration damping fastener system in the prior art cannot realize pre-assembly before delivery like double-layer vibration damping, has more parts, increases construction difficulty to a certain extent, increases the installation cost of the product in an intangible way, and reduces the market competitiveness of the product.
2. In the actual use process, a series of problems of high cost, easy failure of the nylon sleeve, high installation height and the like still exist.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides the track vibration damping fastener which can effectively realize pre-assembly of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery, realize quick on-site installation and reduce the installation cost of products.
In order to achieve the above object, according to one aspect of the present invention, there is provided a track vibration damping fastener including a positioning boss, an elastic pad, and a locking mechanism; wherein,
The elastic pad comprises two layers of pads, and a rail bearing plate is arranged between the two layers of pads;
The locking mechanism comprises a locking nylon sleeve, a preassembly protrusion is arranged on the outer side wall of the locking nylon sleeve and matched with a preassembly groove arranged on the inner wall of a first through hole on the rail bearing plate, the preassembly protrusion and the preassembly groove are mutually buckled, and a flange at the top of the locking nylon sleeve is pressed on the top of the rail bearing plate so that the elastic pad, the rail bearing plate and the locking nylon sleeve form a preassembly structure;
The positioning boss bottom is buried in the track foundation, the top of the positioning boss is a boss structure, the preassembly structure penetrates through the boss structure and is arranged at the top of the track foundation, and the locking mechanism further comprises a bolt assembly and a locking cover plate arranged at the top of the positioning boss and the top of the locking nylon sleeve, and the positioning boss and the preassembly structure are tightly pressed together.
Further, the elastic pad comprises an upper layer elastic pad and a lower layer elastic pad arranged below the upper layer elastic pad, the upper layer elastic pad and the lower layer elastic pad are fixedly connected through elastic pad side walls which are respectively perpendicular to the upper layer elastic pad and the lower layer elastic pad, and the elastic pad side walls are of elastic structures.
Further, the elastic pad comprises an upper elastic pad and a lower elastic pad arranged below the upper elastic pad, and vulcanization adhesion is adopted between the upper elastic pad and the lower elastic pad and between the lower elastic pad and the rail bearing plate.
Further, the lower layer elastic pad both ends are equipped with the third through-hole respectively, third through-hole inner wall is equipped with annular groove structure, with the outward annular boss phase-match of rail bearing plate that sets up in rail bearing plate bottom.
Further, one surface of the lower elastic pad, which is in contact with the rail bearing plate, is provided with a plurality of convex nail structures.
Further, a plurality of groove structures are arranged at the contact part of the bottom of the lower elastic cushion and the upper surface of the sleeper or the track bed plate or the track bed.
Further, the top of the upper elastic pad is provided with a plurality of convex nail structures.
Further, the vertical part of the locking cover plate is arranged at the top of the locking nylon sleeve, and the horizontal part of the locking cover plate is arranged at the top of the positioning boss.
Further, the bolt assembly comprises a bolt, the bottom end of the bolt is arranged in the positioning boss inner cavity, and a nut is arranged at the top end of the bolt.
According to another aspect of the present invention, there is provided a method of installing a rail vibration damping fastener for installing the rail vibration damping fastener, comprising the steps of:
S1: the upper layer elastic pad and the lower layer elastic pad of the elastic pad are fixed through the side wall of the elastic pad to form an integrated structure, and then the rail bearing plate is arranged between the upper layer elastic pad and the lower layer elastic pad; or alternatively, the first and second heat exchangers may be,
And the upper layer iron backing plate is stuck to the top of the rail bearing plate in a vulcanization bonding mode, and the lower layer elastic pad is stuck to the bottom of the rail bearing plate in a vulcanization bonding mode.
S2: then the preassembling protrusion and the annular boss of the rail bearing plate are buckled together to complete preassembling of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery;
s3: ensuring the cleaning of the sleeper surface and the cavity in the positioning boss;
s4: clamping the assembled elastic pad, the rail bearing plate and the locking nylon sleeve outside the positioning boss;
S5: mounting the horizontal part of the locking cover plate on the top of the positioning boss, and pressing the vertical part of the locking cover plate against the locking nylon sleeve;
S6: the bolt is screwed in the inner cavity of the positioning boss, the elastic pad and the nut are arranged, and the locking cover plate, the positioning boss, the elastic pad, the rail bearing plate and the locking nylon sleeve are tightly pressed through the nut;
S7: and installing a steel rail, installing a spring strip in a spring strip installation seat on the rail bearing plate, and arranging a track gauge block between the spring strip and the steel rail.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) The track vibration damping fastener adopts the integrated arrangement of the two layers of elastic pads, the side wall of the elastic pad has elasticity, the rail bearing plate can be arranged in the middle of the integrated elastic pad, the rail bearing plate and the locking insulating sleeve are mutually matched and buckled together, the pre-assembly of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery can be effectively realized while the double-layer vibration damping function is realized, the on-site rapid installation is realized, and the installation cost of a product is reduced.
(2) The track vibration damping fastener can also adopt a mode of bonding the elastic pad and the rail bearing plate to form a bonding pad, and combines the design of the locking mechanism for locking the insulating sleeve and the through hole of the rail bearing plate, so that the defect in the prior art can be effectively overcome, the double-layer vibration damping function of the rail pad and the plate pad can be realized, the pre-assembly of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery can be effectively realized, and the quick installation on site can be realized.
(3) According to the track vibration damping fastener, the lower iron backing plate in the prior art is replaced by the embedded positioning boss, so that the manufacturing cost of the double-layer vibration damping fastener can be reduced, the problem that a nylon sleeve is easy to fail is solved, the installation height of the fastener can be reduced, the installation height of the fastener is kept consistent with that of a conventional common fastener, the height transition is not needed, meanwhile, the installation height is reduced, the track stability is improved, and the track gauge holding capacity is enhanced.
(4) According to the track vibration damping fastener, the vertical part of the locking cover plate is tightly pressed on the top of the locking nylon sleeve, so that the compression of the locking nylon sleeve is small, the tightness of a bolt, a nut, the locking cover plate and a preassembled structure can be ensured, the elastic effect of an elastic pad at the lower layer is avoided, and the double-layer vibration damping function is achieved.
(5) According to the method for installing the track vibration damping fastener, the elastic pad, the rail bearing plate and the locking nylon sleeve are preassembled before delivery, and then the preassembled structure is clamped outside the positioning boss, so that the on-site installation workload can be reduced, the construction efficiency can be improved, and the market competitiveness of a product can be enhanced.
Drawings
FIG. 1 is a general assembly view of a track vibration damping fastener according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a track vibration damping fastener according to a first embodiment of the present invention;
FIG. 3 is a schematic view of an elastic pad structure of a track vibration damping fastener according to an embodiment of the present invention;
FIG. 4 is a schematic view of a rail bearing structure of a rail damping fastener according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a locking nylon sleeve related to a track vibration damping fastener according to a first embodiment of the present invention;
Fig. 6 is a schematic structural view of an adhesive pad related to a track vibration damping fastener according to a second embodiment of the present invention.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-steel rail, 2-rail bearing plate, 3-elastic pad, 4-positioning boss, 5-concrete sleeper, 6-locking nylon sleeve, 7-locking cover plate, 8-bolt, 9-nut, 10-elastic pad, 11-elastic strip and 12-insulation gauge block;
21-a rail bearing plate annular boss, 22-a preassembly groove and 23-a first through hole; 31-upper layer elastic pad, 32-lower layer elastic pad, 33-elastic pad sidewall; 61-preassembly projections, 62-flanges;
321-male pin structure, 322-groove structure, 323-annular groove structure, 324-third through hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
Fig. 1 is a general assembly view of a track vibration damping fastener according to an embodiment of the present invention, as shown in fig. 1, the vibration damping fastener of the present invention includes a rail bearing plate 2, an elastic pad 3, a positioning boss 4, a concrete sleeper 5, a locking nylon sleeve 6, a locking cover 7, a bolt 8, a nut 9, a spring pad 10, a spring bar 11, and an insulation gauge block 12; the bottom of the positioning boss 4 is buried in the track foundation, and the top of the positioning boss 4 is of a hollow boss structure. The rail bearing plate 2, the elastic pad 3 and the locking nylon sleeve 6 are of a pre-assembled structure, and the pre-assembled structure penetrates through a boss structure at the top of the positioning boss 4 and is arranged on the rail foundation. The locking cover plate 7 is arranged at the tops of the positioning boss 4 and the locking nylon sleeve 6, the bolt 8 is arranged in the hollow cavity of the positioning boss 4, the nut 9 is arranged at the top of the bolt 8, and the positioning boss 4 and the preassembly mechanism are tightly pressed through the nut 9 and the locking cover plate 7. The locking nylon sleeve 6, the locking cover plate 7 and the bolt assembly are locking mechanisms, wherein the bolt assembly comprises a bolt 8, a nut 9 and a spring pad 10.
Specifically, fig. 3 is a schematic diagram of an elastic pad structure related to a track vibration damping fastener according to an embodiment of the present invention, where the elastic pad 3 is divided into an upper layer and a lower layer, and includes an upper layer elastic pad 31 disposed on the upper layer and a lower layer elastic pad 32 disposed on the lower layer, where the upper layer elastic pad 31 is disposed between the rail bearing plate 2 and the rail 1, and the lower layer elastic pad 32 is disposed at the bottom of the rail bearing plate 2. The upper layer elastic pad 31 and the lower layer elastic pad 32 are integrally formed, and are fixedly connected through elastic pad side walls 33 which are respectively perpendicular to the upper layer elastic pad 31 and the lower layer elastic pad 32, so that a certain distance is reserved between the upper layer elastic pad 31 and the lower layer elastic pad 32, and the upper layer elastic pad 32 is positioned above the middle section of the lower layer elastic pad 31. The rail bearing plate 2 is located between the upper elastic pad 31 and the lower elastic pad 32, the elastic pad side wall 33 has elasticity, the rail bearing plate 2 can pass through the integrated upper elastic pad 31 and lower elastic pad 32, when the rail bearing plate 2 passes through a gap between the two layers of elastic pads, the elastic pad side wall 33 with elasticity is spread for one side elastic strip mounting seat on the rail bearing plate 2 to pass through, and after the elastic strip mounting seat passes through, the elastic pad side wall 33 returns to the previous rigidity again, and the upper elastic pad and the lower elastic pad can be supported.
The lower layer elastic pad 32 comprises a convex nail structure 321, a groove structure 322 and an annular groove structure 323, the transverse two ends of the lower layer elastic pad 32 are respectively provided with a third through hole 324, a positioning boss 4 penetrates through the third through hole, the inner wall of the third through hole 324 is provided with the annular groove structure 323, the bottom of the first through hole of the rail bearing plate 2 is provided with an outward rail bearing plate annular boss 21, the rail bearing plate annular boss 21 is matched with the annular groove structure 323, and the rail bearing plate annular boss 21 is inserted into the annular groove structure 323. One surface (two lateral sides of the lower elastic pad 32) of the lower elastic pad 32, which is contacted with the rail bearing plate 2, is provided with a plurality of convex nail structures 321, which is favorable for fully playing the elastic vibration reduction function of the lower elastic pad, and the part of the bottom of the lower elastic pad 32, which is contacted with the upper surface of the sleeper or the track bed plate or the track bed, is provided with a plurality of groove structures 322, which are used for increasing the contact area between the lower elastic pad and the sleeper and reducing the risk of abrasion damage between the lower elastic pad and the sleeper. The lower elastic pad 32 is provided with a protruding nail structure 321 except for the position of the third through hole 324.
The top of the upper layer elastic pad 31 is provided with a plurality of convex nail structures, and the two lateral sides of the upper layer elastic pad 31 are lower and are provided with corresponding positions matched with the first through holes 23 on the rail bearing plate 2.
Preferably, the upper layer elastic pad 31, the lower layer elastic pad 32 and the elastic pad side wall 33 of the elastic pad 3 are made of one of natural rubber, thermoplastic elastomer, polyurethane and other elastomers.
FIG. 4 is a schematic view of a rail bearing structure of a rail damping fastener according to an embodiment of the present invention; as shown in fig. 4, spring strip installation seats and first through holes 23 used for penetrating the positioning bosses 4 are respectively arranged at the two side end parts of the rail bearing plate 2, the spring strip installation seats are used for installing and fixing spring strips 11 of the steel rail 1, and insulating gauge blocks 12 are further arranged between the spring strips 11 and the steel rail 1.
Further, the locking mechanism comprises a locking nylon sleeve 6, a locking cover plate 7 and a bolt assembly, wherein the locking nylon sleeve 6 is arranged between the positioning boss 4 and the first through hole 23 and is used for locking the rail bearing plate 2 and the positioning boss 4. Fig. 5 is a schematic structural view of a locking nylon sleeve related to a track vibration damping fastener according to a first embodiment of the present invention, as shown in fig. 5, the locking nylon sleeve 6 includes a tubular body, a flange 62 disposed at the top end of the tubular body, and the tubular body is configured to be inserted into the positioning boss 4 and the annular cavity of the first through hole 23; the flange 62 is used to press the rail plate 2. The outer side wall of the locking nylon sleeve 6 is provided with a plurality of preassembly protrusions 61, and corresponding preassembly grooves 22 are correspondingly formed in the inner wall of the first through hole 23 of the rail bearing plate 2 and are mutually matched and buckled together, so that the preassembly of the locking nylon sleeve 6 and the rail bearing plate 2 before delivery can be realized, the field installation procedure is reduced, and the construction period is saved.
The outer edge of the vertical part of the locking cover plate 7 is arranged at the top of the locking nylon sleeve 6 and used for pressing the flange of the locking nylon sleeve 6; the upper horizontal part of the locking cover plate 7 is arranged at the top of the positioning boss 4 and is used for pressing the positioning boss 4; the middle position of the locking cover plate 7 is provided with a second through hole for the bolt 8 to penetrate, and the nut 9 is used for pressing the upper surface of the locking cover plate 7.
The bolt assembly comprises a bolt 8 and a nut 9, the bottom end of the bolt 8 is arranged in the cavity inside the positioning boss 4 and used for being connected with the positioning boss 4, and the top end of the bolt 8 is used for screwing in the nut 9 and locking the locking cover plate 7, the positioning boss 4 and the preassembled locking nylon sleeve 6, the elastic pad 3 and the rail bearing plate 2.
After the nuts are screwed down, the horizontal part of the locking cover plate 7 presses the top of the positioning boss 4, the vertical part presses the top of the locking nylon sleeve 6, the horizontal part (the top of the positioning boss 4) of the locking cover plate 7 bears most of the pressure, the top of the locking nylon sleeve 6 bears a small part of the pressure, and as the locking nylon sleeve 4, the elastic pad 3 and the rail bearing plate 2 are preassembled, the locking nylon sleeve 6 is less in pressure, so that the tightness of the bolts 8, the nuts 9, the locking cover plate 7 and the preassembled structure can be ensured, and the elastic effect of the lower elastic pad 32 (especially the lower elastic pad 3) in the shadow elastic pad 3 is avoided, so that the double-layer vibration reduction function is realized.
The invention adopts the integrated arrangement of the two layers of elastic pads, the side wall of the elastic pad has elasticity, the rail bearing plate can be arranged in the middle of the integrated elastic pad, the rail bearing plate and the locking insulating sleeve are mutually matched and buckled together, the pre-assembly of the elastic pad, the rail bearing plate and the locking nylon sleeve before delivery can be effectively realized while the double-layer vibration reduction function is realized, the on-site rapid installation is realized, and the installation cost of products is reduced.
The invention can also replace the lower iron pad plate in the prior art by embedding the positioning boss, can reduce the manufacturing cost of the double-layer vibration reduction fastener, solves the problem that the nylon sleeve is easy to fail, can reduce the mounting height of the fastener, ensures that the mounting height of the fastener is consistent with that of a conventional common fastener, does not need to carry out height transition, reduces the mounting height, can improve the track stability and enhances the track gauge holding capacity.
The invention also provides an installation method of the track vibration damping fastener, which comprises the following steps:
S1: the upper layer elastic pad 31 and the lower layer elastic pad 32 of the elastic pad 3 are fixed through the elastic pad side wall 33 to form an integrated structure, then the rail bearing plate 2 is arranged between the upper layer elastic pad 31 and the lower layer elastic pad 32, and the preassembled bulge 61 on the locking nylon sleeve 6 and the rail bearing plate annular boss 21 on the rail bearing plate 2 are buckled together to complete preassembly of the elastic pad 3, the rail bearing plate 2 and the locking nylon sleeve 6 before delivery;
S2: the cleaning of the inner cavity of the positioning boss 4 in the sleeper surface and the track foundation is ensured;
S3: the assembled elastic pad 3, the rail bearing plate 2 and the locking nylon sleeve 6 are clamped outside the positioning boss 4;
S4: a locking cover plate 7 is arranged at the top of the positioning boss 4, and the bottom of the locking cover plate 7 compresses the locking nylon sleeve 6;
s5: the bolts 8 are screwed in the inner cavities of the positioning bosses 4, the elastic pads 10 and the nuts 8 are arranged, and the locking cover plate 7, the positioning bosses 4, the preassembled elastic pads 3, the rail bearing plate 2 and the locking nylon sleeve 6 are tightly pressed through the nuts 8;
S6: the steel rail 1 is installed, the elastic strip 11 is installed in the elastic strip installation seat, and a track gauge block is arranged between the elastic strip 11 and the steel rail 1.
According to the method for installing the track vibration damping fastener, the elastic pad, the rail bearing plate and the locking nylon sleeve are preassembled before delivery, and then the preassembled structure is clamped outside the positioning boss, so that the on-site installation workload can be reduced, the construction efficiency is improved, and the market competitiveness of a product is enhanced.
Example two
It should be noted that, as shown in fig. 6, the schematic structural diagram of the bonding pad related to the track vibration damping fastener of the second embodiment of the present invention, and referring to fig. 1-6, this embodiment provides a track vibration damping fastener, which is different from the first embodiment in that the connection mode of the elastic pad 3 and the rail bearing plate 2 is vulcanization bonding, so as to form the bonding pad 13, where the bonding pad 13 includes an under-rail pad 131 and an under-plate pad 132, and the under-rail pad 131 is disposed at the top of the rail bearing plate 2, and the under-plate pad 132 is disposed at the bottom of the rail bearing plate 2.
In the second embodiment of the invention, the elastic pad 3 and the rail bearing plate 2 are bonded to form the bonding pad 13, and the locking mechanism design of the through holes of the locking insulating sleeve 6 and the rail bearing plate 2 is combined, so that the defects in the prior art can be effectively overcome, the double-layer vibration reduction function of the rail pad 131 and the plate pad 132 can be realized, the pre-assembly of the elastic pad 3, the rail bearing plate 2 and the locking nylon sleeve 6 before delivery can be effectively realized, and the quick on-site installation can be realized.
The installation method of the track vibration damping fastener in the second embodiment of the present invention is different from the installation method in the first embodiment in that the pre-assembly mode of the elastic pad 3, the rail bearing plate 2 and the locking nylon sleeve 6 in the S1 is different, in this embodiment, the rail lower pad 131 and the plate lower pad 132 of the elastic pad are respectively bonded with the rail bearing plate 2 by vulcanization to form a bonding pad 13, and then the pre-assembly protrusion 61 on the locking nylon sleeve 6 and the rail bearing plate annular boss 21 on the rail bearing plate 2 are buckled together to complete the pre-assembly of the elastic pad 3, the rail bearing plate 2 and the locking nylon sleeve 6 before leaving the factory.
According to the method for installing the track vibration damping fastener, the elastic pad, the rail bearing plate and the locking nylon sleeve are preassembled before delivery, and then the preassembled structure is clamped outside the positioning boss, so that the on-site installation workload can be reduced, the construction efficiency can be improved, and the market competitiveness of a product can be enhanced.
In the track vibration damping fastener provided in this embodiment, the main structure is similar to that of the embodiment, and for the connection of the main structure, please refer to the description of the first embodiment, the embodiment is intended to illustrate the difference between the two.
In the description of the present application, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The track vibration damping fastener is characterized by comprising a positioning boss (4), an elastic pad (3) and a locking mechanism; wherein,
The elastic pad (3) comprises an upper elastic pad (31) and a lower elastic pad (32) arranged below the upper elastic pad, the upper elastic pad and the lower elastic pad are fixedly connected through elastic pad side walls (33) which are respectively perpendicular to the upper elastic pad, and the elastic pad side walls (33) are of an elastic structure;
A rail bearing plate (2) is arranged between the upper elastic pad (31) and the lower elastic pad (32), a first through hole (23) is formed in the rail bearing plate (2), an outward rail bearing plate annular boss (21) is arranged at the bottom of the first through hole (23), and a preassembly groove (22) is formed in the inner wall of the first through hole (23);
The two ends of the lower elastic pad (32) are respectively provided with a third through hole (324), the inner wall of the third through hole (324) is provided with an annular groove structure (323) which is matched with an annular boss (21) of the rail bearing plate, which is arranged outwards at the bottom of the rail bearing plate (2), and the annular boss (21) of the rail bearing plate is inserted into the annular groove structure (323);
the locking mechanism comprises a locking nylon sleeve (6), a preassembly protrusion (61) is arranged on the outer side wall of the locking nylon sleeve and matched with a preassembly groove (22) arranged on the inner wall of a first through hole (23) on the rail bearing plate (2), the preassembly protrusion (61) and the preassembly groove (22) are mutually buckled, and a flange (62) at the top of the locking nylon sleeve (6) is pressed at the top of the rail bearing plate (2);
so that the elastic pad (3), the rail bearing plate (2) and the locking nylon sleeve (6) form a preassembled structure;
the bottom of the positioning boss (4) is buried in the track foundation, the top of the positioning boss is a boss structure, and the preassembly structure penetrates through the boss structure and is arranged at the top of the track foundation;
The locking mechanism further comprises a bolt assembly and a locking cover plate (7) arranged at the tops of the positioning boss (4) and the locking nylon sleeve (6), and the positioning boss (4) and the preassembled structure are tightly pressed together; the bolt assembly comprises a bolt (8), the bottom end of the bolt (8) is arranged in the inner cavity of the positioning boss (4), and a nut (9) is arranged at the top end of the bolt (8).
2. The track vibration damping fastener according to claim 1, characterized in that the side of the lower layer elastic pad (32) contacting the rail bearing plate (2) is provided with a plurality of convex nail structures (321).
3. A track vibration damping fastener according to claim 1, characterized in that the bottom of the lower resilient pad (32) is provided with groove structures (322) at the portion contacting the sleeper or ballast plate or ballast upper surface.
4. Rail vibration damping fastener according to claim 1, characterized in that the top of the upper layer of elastic pad (31) is provided with a number of stud structures.
5. The track vibration damping fastener according to claim 1, characterized in that the vertical portion of the locking cover plate (7) is provided at the top of the locking nylon sleeve (6), and the horizontal portion of the locking cover plate (7) is provided at the top of the positioning boss (4).
6. A method of installing a track vibration damping fastener as claimed in any one of claims 1 to 5, comprising the steps of:
S1: fixing the upper layer elastic pad (31) and the lower layer elastic pad (32) of the elastic pad (3) through the elastic pad side wall (33) to form an integrated structure, and then arranging the rail bearing plate (2) between the upper layer elastic pad (31) and the lower layer elastic pad (32); the annular boss (21) of the rail bearing plate at the bottom of the first through hole of the rail bearing plate (2) is inserted into the annular groove structure (323) of the inner wall of the third through hole of the lower elastic pad (32);
S2: then the preassembling protrusion (61) and the preassembling groove (22) are buckled together to finish the preassembling of the elastic pad (3), the rail bearing plate (2) and the locking nylon sleeve (6) before delivery;
S3: ensuring the cleaning of the sleeper surface and the inner cavity of the positioning boss (4);
s4: the assembled elastic pad (3), the rail bearing plate (2) and the locking nylon sleeve (6) are clamped outside the positioning boss (4);
s5: mounting the horizontal part of the locking cover plate (7) on the top of the positioning boss (4), and pressing the vertical part of the locking cover plate (7) against the locking nylon sleeve (6);
S6: the bolt (8) is screwed in the inner cavity of the positioning boss (4), the elastic pad (10) and the nut (9) are arranged, and the locking cover plate (7), the positioning boss (4), the elastic pad (3), the rail bearing plate (2) and the locking nylon sleeve (6) are tightly pressed through the nut (9);
s7: the steel rail (1) is installed, the elastic strip (11) is installed in an elastic strip installation seat on the rail bearing plate (2), and a track gauge block is arranged between the elastic strip (11) and the steel rail (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810413.9A CN110468634B (en) | 2019-08-29 | 2019-08-29 | Rail vibration damping fastener and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810413.9A CN110468634B (en) | 2019-08-29 | 2019-08-29 | Rail vibration damping fastener and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110468634A CN110468634A (en) | 2019-11-19 |
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| US7766249B2 (en) * | 2007-04-25 | 2010-08-03 | Osler Wilbur F | Anchor-bolt assembly |
| WO2016094965A1 (en) * | 2014-12-19 | 2016-06-23 | Sys-Tek Engineering Pty Ltd | Rail support system, components and method for control of noise and vibration from ballastless monorail or super narrow gauge railway track systems |
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| CN206538640U (en) * | 2017-01-13 | 2017-10-03 | 洛阳科博思新材料科技有限公司 | A kind of flexible clamp piece |
| CN210657813U (en) * | 2019-08-29 | 2020-06-02 | 中铁第四勘察设计院集团有限公司 | Track damping fastener |
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