CN108265571A - A kind of Damping fastening system - Google Patents
A kind of Damping fastening system Download PDFInfo
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- CN108265571A CN108265571A CN201710003168.1A CN201710003168A CN108265571A CN 108265571 A CN108265571 A CN 108265571A CN 201710003168 A CN201710003168 A CN 201710003168A CN 108265571 A CN108265571 A CN 108265571A
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- boss
- bolt
- rail
- fastener system
- vibration
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- 238000013016 damping Methods 0.000 title claims abstract description 39
- 238000009434 installation Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 12
- 230000007547 defect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 25
- 239000010959 steel Substances 0.000 description 25
- 239000010410 layer Substances 0.000 description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 239000004677 Nylon Substances 0.000 description 15
- 229920001778 nylon Polymers 0.000 description 15
- 230000006870 function Effects 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 10
- 241001669679 Eleotris Species 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
Classifications
-
- 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
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A kind of Damping fastening system is disclosed herein, including positioning seat, support rail backing plate, locking mechanism；The lower part of the positioning seat is the cylinder for being embedded to track foundation, and top is the boss for connecting support rail backing plate；The support rail backing plate is equipped with spring seat and for the perforative first through hole of boss；The locking mechanism is used to implement the locking connection between support rail backing plate and positioning seat；The application can be applied to field of track traffic, it can effectively overcome defect in the prior art using the application, the cost of fastener system can effectively be reduced, intensity and the service life of fastener entirety can be effectively improved, the mounting height of rail can effectively be reduced, and then the increased situation of constructing tunnel cost caused by mounting height is higher can be effectively avoided, while the lateral stability of rail can be effectively improved.
Description
Technical Field
The application relates to but is not limited to the rail transit field, especially a damping fastener system.
Background
In recent years, with the rapid development of rail transit systems represented by subways, intercity railways and the like, the tension situation of urban traffic is effectively relieved; however, at the same time, vibration and noise pollution caused by the transportation modes also bring great troubles to the production and life of people.
Wherein, the rail fastener is as the adapting unit between rail and the sleeper, when playing fixed rail function, its damping falls the function of making an uproar and also receives people's attention more and more, has promoted a series of rail fastener products that have the damping and fall the function of making an uproar on the market at present. In numerous damping fastener products, thereby separable double-deck damping fastener has realized the damping of two-layer elastomer and has reached higher damping effect to can conveniently realize the dismantlement of spare part and change, consequently obtain a large amount of applications, receive market's favor deeply.
In order to achieve double-layer elastomer damping of rail fasteners, various documents in the prior art disclose different technical solutions; the technical proposal disclosed in the patent refers to the realization of vibration damping effect in a system by the cooperation of two layers of iron backing plates and two layers of elastomers. In the fastener system, an upper iron tie plate plays a role of bearing and fixing a steel rail, and an anchoring spike is screwed into a nylon sleeve fixed in a ballast bed foundation and is pressed against a lower iron tie plate, thereby fixing the fastener system on the ballast bed foundation, fig. 1 is a typical prior art structural diagram.
The technical scheme in the prior art can fully play the vibration damping function of the two layers of elastomers, and realize higher vibration damping capacity; however, in the actual use process, the following disadvantages still exist:
1, the double-layer vibration-damping fastener is high in cost;
in the technical scheme disclosed by the prior art, two layers of metal iron base plates are required for the double-layer vibration-damping fastener, and the two layers of iron base plates respectively play different roles; the two layers of metal iron backing plates are two parts with the highest cost in the whole fastener system, account for more than 70% of the whole cost, and compared with a single layer of metal backing plate of a common fastener, the two layers of metal iron backing plates are additionally provided with one layer of metal backing plate, so that the cost is greatly increased.
2, the nylon sleeve is easy to lose efficacy;
in the technical scheme disclosed by the prior art, the double-layer vibration reduction fasteners are screwed into the nylon sleeve by the anchoring spike, so that the fasteners are fixed on a ballast bed foundation; wherein, the nylon sleeve pipe belongs to the plastics material, and the screw thread structure that anchor spike and its screw thread cooperate to form can't bear and dismantle repeatedly and screw up, and the inefficacy phenomenon just appears in the screw thread of nylon sleeve pipe after screwing up several times, causes the fastener to be unable firmly to be fixed on the ballast bed basis, brings the hidden danger for driving safety.
3. The mounting height of the steel rail is higher;
in the technical scheme disclosed by the prior art, two layers of metal backing plates are arranged on the double-layer vibration-damping fasteners, and the height of the fasteners is higher and is usually more than 14 mm; this will cause the height of the rail foot to the tie face to be higher; the installation height of the steel rail is high, so that the section height of the subway tunnel is required to be increased, and the construction cost of the tunnel is increased; on the other hand, the higher the height from the rail to the sleeper surface, the poorer the lateral stability of the rail, which brings adverse effects on the safety and stability of the whole system.
Disclosure of Invention
The technical problem that this application was solved provides a damping fastener system, can effectively overcome the defect that exists among the prior art, can effectively reduce the cost of fastener system, can effectively improve the holistic intensity of fastener and life-span, can effectively reduce the mounting height of rail, and then can effectively avoid the condition because of the higher tunnel construction cost that causes of mounting height increases, can effectively improve the lateral stability of rail simultaneously.
In order to solve the technical problem, the application provides a vibration damping fastener system which comprises a positioning seat, a bearing rail base plate and a locking structure;
the lower part of the positioning seat is a cylinder for embedding a track foundation, and the upper part of the positioning seat is a boss for connecting a track bearing base plate; the rail bearing base plate is provided with an elastic strip seat and a first through hole for the boss to penetrate through; the locking structure is used for realizing the locking connection between the rail bearing backing plate and the positioning seat.
The above-described vibration-damping fastener system may also be characterized as follows,
also comprises a middle elastic cushion and an under-rail elastic cushion; wherein,
the middle elastic cushion is arranged below the rail bearing backing plate and is provided with a third through hole for the boss to penetrate through; the elastic pad under the rail is arranged above the rail bearing backing plate, and the outer edge of the elastic pad under the rail is provided with an arc-shaped avoiding area matched with the first through hole.
The above-described vibration-damping fastener system may also be characterized as follows,
the locking structure comprises a clamping sleeve and a bolt; wherein,
the clamping sleeve comprises a tubular body and a flange arranged at the top end of the tubular body, the tubular body is used for being inserted into an annular cavity between the first through hole and the boss, and the flange is used for pressing the rail bearing base plate; the bottom of bolt is used for connecting the boss, the top of bolt is used for connecting the screens cover.
The above-described vibration-damping fastener system may also be characterized as follows,
the locking structure further comprises a locking cover plate; wherein,
the middle position of the locking cover plate is provided with a second through hole for the bolt to penetrate through, the top end of the bolt is used for pressing the locking cover plate, and the outer edge of the locking cover plate is used for pressing the flange.
The above-described vibration-damping fastener system may also be characterized as follows,
the bottom end of the bolt is integrally connected with the boss; or,
the bottom end of the bolt is in threaded connection with the boss, and an internal thread groove matched with the bolt is formed in the boss; or,
the bottom end of the bolt is connected with the boss in a clamping mode, the bolt is a T-shaped bolt, and a T-shaped clamping groove matched with the T-shaped bolt is formed in the boss in the positioning seat.
The above-described vibration-damping fastener system may also be characterized as follows,
the top end of the bolt is provided with a nut which is used for pressing the locking cover plate; or,
the top end of the bolt is provided with a head structure, and the head structure is used for compressing the locking cover plate.
The above-described vibration-damping fastener system may also be characterized as follows,
the top end of the boss is provided with an installation cavity used for being connected with the locking structure, and the bottom end of the installation cavity is provided with a drain hole.
The above-described vibration-damping fastener system may also be characterized as follows,
the tubular body is a tubular body having a non-uniform wall thickness.
The above-described vibration-damping fastener system may also be characterized as follows,
still include the protection backing plate, the below of middle cushion is located to the protection backing plate, the protection backing plate is equipped with the fourth through-hole that is used for the boss to run through.
The above-described vibration-damping fastener system may also be characterized as follows,
the height-adjusting cushion plate is arranged below the rail bearing cushion plate.
The above-described vibration-damping fastener system may also be characterized as follows,
two spring bar seats arranged diagonally and two first through holes arranged diagonally are arranged on the rail bearing base plate, and the middle point of a connecting line between the centers of the two spring bar seats is not coincident with the middle point of a connecting line between the centers of the two first through holes.
The above technical scheme of this application has following beneficial effect:
compared with the prior art, the lower-layer iron base plate in the prior art can be replaced by the positioning seat, the rail bearing base plate and the rail foundation can be connected and fixed, the total weight of the base plate in the prior art can be effectively reduced due to the arrangement of the positioning seat, and the cost can be effectively saved; in addition, the positioning seat is embedded, so that the problem of failure of the nylon sleeve caused by the fact that the anchoring spike is matched with the nylon sleeve to fix the nylon sleeve in the conventional vibration damping fastener technology can be solved; finally, the thickness of the cushion plate layer is reduced in height by the fastener system, so that the mounting height of the steel rail can be effectively reduced, the height of the section of the tunnel can be effectively reduced, and the construction cost of the tunnel can be effectively reduced; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and the stability of the whole system are further improved.
The damping performance of the fastener system can be effectively improved by arranging the middle elastic cushion and the elastic cushion under the rail; the tubular body can be inserted into the annular cavity between the first through hole and the boss, so that the position of the rail bearing base plate in the horizontal direction can be fixed; furthermore, the rail bearing backing plate can be pressed through the matching of the flange and the bolt, and the position fixation of the rail bearing backing plate in the vertical direction can be realized; secondly, still can realize the convenient installation fixed operation of support rail backing plate through the setting of above-mentioned bolt.
The invention can also realize the adjustment of the relative position of the rail bearing backing plate and the positioning seat through the arrangement of the non-uniform wall thickness of the tubular body, thereby changing the horizontal position of the elastic strip seat on the rail bearing backing plate and further changing the horizontal position of the steel rail fixed with the elastic strip seat, namely realizing the change of the installation position of the steel rail and the relative distance of two strands of steel rails on a track, namely realizing the function of adjusting the track gauge; the middle point of a connecting line between the centers of the two elastic strip seats and the middle point of a connecting line between the centers of the two first through holes are not coincident, the mounting position of the rail bearing base plate can be changed through rotation, the change of the horizontal position of the elastic strip seats can be realized, the mounting position of the steel rail and the change of the relative distance of the steel rail can be further realized, and the track gauge adjusting capacity of the fastener system can be effectively improved.
The invention can also transmit the compression of the nut to the outer edge position through the arrangement of the locking cover plate, and compress the top end flange of the clamping sleeve through the outer edge of the locking cover plate; the setting of the above-mentioned cell body of accessible can provide the independent cavity that holds the boss top, can effectively guarantee the convenience of later stage operation, and then can effectively increase the accent ability of fastener.
The positioning seat can be arranged in the track foundation, so that the connection stability of the positioning seat in the track foundation can be effectively improved, and the connection stability of the whole fastener can be further effectively improved; through the arrangement of the drain holes, the accumulated water in the boss can be avoided, the condition that the service life of the part is shortened due to the corrosion of the accumulated water in the boss can be effectively avoided, and the service life of the part can be effectively prolonged; the protective base plate can protect the middle elastic pad from being damaged by sand possibly appearing on the sleeper; the setting of the backing plate of increaseing of accessible can realize the function of increaseing of fastener.
The invention can also adjust the thickness of the gasket by adjusting the torque of the nut on the bolt or adjusting the thickness of the pretightening force adjusting gasket below the locking cover plate, thereby realizing the adjustment of the pretightening force of the middle elastic cushion.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
FIG. 1 is a schematic view of a prior art fastener system;
FIG. 2 is a first cross-sectional view of an assembly according to a first embodiment of the present invention;
FIG. 3 is a second cross-sectional view of the final assembly in the first embodiment of the present invention;
fig. 4 is a schematic structural diagram of the positioning seat according to the first embodiment of the invention;
FIG. 5 is a schematic view illustrating a connection between the positioning seat and the rail supporting pad according to the first embodiment of the present invention;
fig. 6 is a schematic structural view of a positioning sleeve according to a first embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a T-bolt according to a first embodiment of the present invention;
FIG. 8 is a first schematic structural view of a locking end cap according to a first embodiment of the present invention;
fig. 9 is a structural schematic diagram of a locking end cover in the first embodiment of the invention;
FIG. 10 is a schematic view of an intermediate elastic pad according to one embodiment of the present invention;
FIG. 11 is a schematic structural diagram of an under-rail elastic pad according to a first embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a protective pad according to a first embodiment of the present invention;
fig. 13 is a schematic structural diagram of the positioning seat in the third embodiment of the invention;
fig. 14 is a schematic structural diagram of a locking end cap in the third embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The first embodiment is as follows:
as shown in connection with fig. 2-12;
the embodiment of the invention provides a vibration-damping fastener system, which comprises a positioning seat 9, a rail bearing backing plate 2 and a locking structure; wherein, the lower part of the positioning seat 9 is a column 92 used for embedding a track foundation, and the upper part is a boss 91 used for connecting the track bearing backing plate 2; the rail bearing backing plate 2 is provided with an elastic strip seat 21 and a first through hole 22 for the boss 91 to penetrate through; the locking structure is used for realizing the locking limit connection between the rail bearing backing plate 2 and the positioning seat 9.
In the concrete operation, the positioning seat 9 can be embedded into a track foundation, so that the rail bearing backing plate 2 can be connected and supported; the rail bearing backing plate 2 can be connected with the positioning seat 9 through the arrangement of the locking structure, and the application of a single-layer metal plate can be realized; during installation, the elastic strip can be installed on the elastic strip seat 21, and a gauge block and other structures can be further included to realize the fixation of the steel rail 1.
Compared with the prior art, the lower-layer iron base plate in the prior art can be replaced by the positioning seat 9, the rail bearing base plate 2 and the rail foundation can be connected and fixed, the total weight of the base plate in the prior art can be effectively reduced due to the arrangement of the positioning seat 9, and the cost can be effectively saved; in addition, the positioning seat 9 is embedded, so that the problem of failure of the nylon sleeve caused by the fact that the anchoring spike is matched with the nylon sleeve to fix the nylon sleeve in the conventional vibration damping fastener technology can be solved; finally, the thickness of the cushion plate layer is reduced in height by the fastener system, so that the mounting height of the steel rail can be effectively reduced, the height of the section of the tunnel can be effectively reduced, and the construction cost of the tunnel can be effectively reduced; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and the stability of the whole system are further improved.
Preferably, in this embodiment, as shown in fig. 10 and 11, a middle elastic pad 4 and an under-rail elastic pad 3 may be further included; the middle elastic pad 4 is arranged below the rail bearing backing plate 2, and the middle elastic pad 4 is provided with a third through hole for the boss 91 to penetrate through; the under-rail elastic pad 3 is arranged above the rail bearing backing plate 2, and the outer edge of the under-rail elastic pad 3 is provided with an arc-shaped avoiding area matched with the first through hole 22.
In the specific operation, the arrangement of the middle elastic cushion 4 and the under-rail elastic cushion 3 can effectively improve the vibration damping performance of the fastener system; furthermore, in the present embodiment, the upper surfaces of the middle elastic pad 4 and the under-rail elastic pad 3 are both provided with a plurality of columnar protrusions; the arrangement of the protrusions can generate certain deformation when bearing load, so that the corresponding buffer vibration reduction technical effect is realized; furthermore, the middle elastic pad and the under-rail elastic pad can also adopt a groove type structure or other vibration reduction structures so as to realize the corresponding vibration reduction function. Meanwhile, the middle elastic cushion and the under-rail elastic cushion can be made of rubber, or polyester elastomer, or other elastic materials; in this embodiment, the middle elastic pad and the under-rail elastic pad are preferably made of rubber or polyester elastomer.
In this embodiment, the locking structure may include a locking sleeve 8 and a bolt; the clamping sleeve 8 comprises a tubular body and a flange arranged at the top end of the tubular body, the tubular body is used for being inserted into an annular cavity between the first through hole 22 and the boss 91, and the flange is used for pressing the rail bearing base plate 2; the bottom of bolt is used for connecting boss 91, and the top of bolt is used for connecting screens cover 8.
In a specific operation, as shown in fig. 6, the clamping sleeve 8 may be a clamping insulating sleeve, specifically a clamping nylon sleeve, and the material may be preferably a glass fiber reinforced nylon 66 material; the tubular body can be inserted into the annular cavity between the first through hole 22 and the boss 91, so that the position of the rail bearing backing plate 2 in the horizontal direction can be fixed; furthermore, the rail bearing backing plate 2 can be pressed through the matching of the flange and the bolt, so that the position of the rail bearing backing plate 2 in the vertical direction can be fixed; secondly, still can realize the convenient installation fixed operation of support rail backing plate 2 through the setting of above-mentioned bolt.
In this embodiment, the bottom end of the bolt is in clamping connection with the boss 91; the top end of the bolt is provided with a nut which is used for pressing the locking cover plate.
In the specific operation, as shown in fig. 7, the bolt may be a T-shaped bolt 6, and a T-shaped slot matched with the T-shaped bolt 6 is provided in a boss 91 in the positioning seat 9; in the use, can insert the T type tip of bolt in the boss 91, when the T type tip of bolt was located the T type draw-in groove department in the boss 91, rotatable T type bolt 6 had blocked the T type tip of T type bolt 6 in corresponding T type draw-in groove, can realize the stable connection operation between bolt and the boss 91.
In order to realize the adjusting capacity of the rail gauge of the steel rail; in this embodiment, the tubular body has a non-uniform wall thickness, that is, the geometric centers of the inner tubular wall and the outer tubular wall of the tubular body are not coincident.
In the concrete operation, above-mentioned tubular body specifically is the cavity cylinder, and the geometric centre of its inner contour and outline does not coincide, and the wall thickness of cavity cylinder is unequal in the circumferencial direction promptly, rotates screens cover 8, can realize adjusting the relative position of holding rail backing plate 2 and positioning seat 9 to change the horizontal position of holding the bullet strip seat 21 on the rail backing plate 2, and then change the horizontal position of the rail fixed mutually with bullet strip seat 21, can realize changing the mounted position of rail and the relative distance of rail promptly, can realize the gauge regulatory function promptly. Furthermore, when the fastener needs to adjust the track distance, the clamping sleeves with different wall thicknesses can be directly replaced, so that the relative position of the rail bearing backing plate 2 and the positioning seat 9 can be adjusted, and the track distance adjusting function can be realized.
Preferably, in this embodiment, the rail bearing pad 2 is provided with two spring seats 21 arranged diagonally and two first through holes 22 arranged diagonally, and a midpoint of a connecting line between centers of the two spring seats 21 does not coincide with a midpoint of a connecting line between centers of the two first through holes 22.
In the specific operation, the connecting line midpoint between the centers of the two elastic strip seats 21 is not coincident with the connecting line midpoint between the centers of the two first through holes 22, the change of the horizontal position of the elastic strip seats 21 can be realized by adjusting the mounting position of the first through holes 22 on the bearing rail base plate 2, the change of the mounting position of the steel rail and the relative distance of the steel rail can be further realized, and the rail gauge adjusting capability of the fastener system can be effectively improved; in addition, in this embodiment, the above-mentioned fastener system can be compatible with different elastic strip forms, can adopt the form of "e" type elastic strip or "omega" type elastic strip, or other types of elastic strip structural style, only need set up the elastic strip seat that different elastic strips correspond on the rail bearing backing plate 2, can realize the installation of different forms of elastic strip.
In order to effectively improve the locking stability of the locking structure; in this embodiment, as shown in fig. 8, the locking structure further includes a locking cover plate 7, a second through hole for a bolt to pass through is formed in the middle of the locking cover plate 7, the nut 5 is used for pressing the upper surface of the locking cover plate 7, and the nut 5 may further include a spring washer and a flat washer; the outer edge of the locking cover 7 is used to press the flange.
In the specific operation, the compression of the nut 5 can be transmitted to the outer edge position through the arrangement of the locking cover plate 7, and the top end flange of the clamping sleeve 8 is compressed through the outer edge of the locking cover plate 7; in the installation, can overlap locking apron 7 on the bolt to press on screens cover 8, and then the accessible is screwed up nut 5, realize locking of locking apron 7 and the locking operation of the vertical direction of screens cover 8.
In this embodiment, when the fastener needs to adjust the pre-tightening force of the middle elastic pad 4, the pre-tightening force of the middle elastic pad 4 can be adjusted only by adjusting the torque of the locking nut 5; or, a pretightening force adjusting gasket is arranged between the lower surface of the locking cover plate 7 and the upper surface of the boss 91 of the positioning seat 9, and when the pretightening force needs to be adjusted, different pretightening forces for the middle elastic cushion can be realized while the nut is screwed down only by changing the thickness of the pretightening force adjusting gasket.
Preferably, to enable fastener pull-up capability; in this embodiment, as shown in fig. 9, a groove is formed in the lower surface of the locking cover plate 7, and the groove is used for accommodating the top end of the boss 91.
In the specific operation, the groove body can be arranged to provide an accommodating cavity at the top end of the boss 91; due to the containing cavity, the rail bearing backing plate can be still in a connection state of the boss of the positioning seat after being lifted; specifically, when the fastener needs to increase the installation height of the steel rail, only the increase backing plate needs to be additionally arranged below the rail bearing backing plate (in a broad sense), and the nut is screwed to a preset torque. More preferably, when the heightening base plate is additionally arranged, a cushion block used for eliminating a gap is additionally arranged between the locking cover plate and the boss, and then the nut is screwed, so that the heightening function of the fastener can be realized.
In this embodiment, the column 92 in the positioning seat 9 is a column 92 with a concave-convex structure on a side wall; in the specific operation, the column 92 with the concave-convex structure on the side wall can effectively improve the connection stability of the positioning seat 9 in the track foundation, so that the connection stability of the whole fastener can be effectively improved; furthermore, the columns of two or more positioning seats in the fastener system can be connected together to increase the strength and connection stability of the positioning seats.
Preferably, in this embodiment, the top end of the boss is provided with an installation cavity for connecting the locking structure, and the bottom end of the installation cavity is provided with a drainage hole 93; according to the record, the T-shaped clamping groove is an installation cavity for connecting the locking structure; a drain hole 93 is formed at the bottom end of the T-shaped slot in the boss 91; above-mentioned wash port 93's setting can avoid the inside ponding of boss 91, can effectively avoid the condition that the part longevity face that causes because of inside ponding corrodes reduces, can effectively improve the life of part.
Further, as shown in fig. 12, the fastener system further includes a protective pad disposed below the middle elastic pad 4, and the protective pad is provided with a fourth through hole for the boss 91 to pass through.
In the specific operation, the fourth through hole on the protection backing plate can be sleeved on the boss 91 of the positioning seat 9 to form the positioning of the protection backing plate; through the protective base plate, the middle elastic pad 4 can be protected from sand and stones possibly appearing on the sleeper; flanges can be arranged around the fourth through hole of the protective base plate, and the arrangement of the flanges can increase the mutual positioning capacity between the flanges and 91 of the boss of the positioning seat 9; in addition, the protective pad may preferably be a plate material formed by a sheet metal process or a steel plate processing.
Furthermore, the fastener system also comprises a heightening base plate which is arranged below the rail bearing base plate 2; the heightening base plate can also be arranged below the middle elastic cushion 4; the protective cushion plate can be placed below the protective cushion plate or between the middle elastic cushion 4 and the protective cushion plate; the setting of the backing plate of increaseing of accessible can realize the function of increaseing of fastener.
Example two:
the essential difference between the second embodiment and the first embodiment is that: the connection relationship between the bolt and the protrusion is different.
The main structure of the vibration damping fastener system provided in this embodiment is similar to that of the embodiment, and please refer to the description of the first embodiment regarding the connection of the main structure, and this embodiment is intended to illustrate the difference between the two embodiments.
In this embodiment, the bottom end of the bolt is integrally connected with the boss; namely, the spiral and the positioning seat are integrally formed, and the integrally formed structural form can avoid the arrangement of structures such as T-shaped clamping grooves and the like and can realize the stable connection of the rail bearing base plate; in addition, the top end of the bolt is provided with a nut, the nut can also be provided with a spring washer and a flat washer, and the nut is used for pressing the locking cover plate.
Example three:
the essential difference between the third embodiment and the first embodiment is that: the connection relationship between the bolt and the protrusion is different.
The main structure of the vibration damping fastener system provided in this embodiment is similar to that of the embodiment, and please refer to the description of the first embodiment regarding the connection of the main structure, and this embodiment is intended to illustrate the difference between the two embodiments.
In this embodiment, the bottom end of the bolt is in threaded connection with the boss; namely, the boss is provided with a threaded hole, and the bottom end of the bolt is screwed into the corresponding threaded hole, so that the stable connection between the bolt and the boss of the positioning seat can be realized; the threaded connection structure is realized, the mounting of rail bearing base plates with different thicknesses can be met, and the adaptability of a fastener system can be effectively improved; in addition, the top of bolt is equipped with head structure, and head structure is used for compressing tightly the locking apron.
Further, as shown in fig. 13 and 14, in this embodiment, a boss of the positioning seat may further include a groove, a protrusion is disposed on the corresponding locking cover plate, and the protrusion on the locking cover plate and the groove on the boss of the positioning seat are locked with each other, so as to prevent the locking cover plate from rotating during use, and effectively improve the connection stability of the locking cover plate.
Compared with the prior art, the lower-layer iron base plate in the prior art can be replaced by the positioning seat, the rail bearing base plate and the rail foundation can be connected and fixed, the total weight of the base plate in the prior art can be effectively reduced due to the arrangement of the positioning seat, and the cost can be effectively saved; in addition, the positioning seat is embedded, so that the problem of failure of the nylon sleeve caused by the fact that the anchoring spike is matched with the nylon sleeve to fix the nylon sleeve in the conventional vibration damping fastener technology can be solved; finally, the thickness of the cushion plate layer is reduced in height by the fastener system, so that the mounting height of the steel rail can be effectively reduced, the height of the section of the tunnel can be effectively reduced, and the construction cost of the tunnel can be effectively reduced; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and the stability of the whole system are further improved.
The damping performance of the fastener system can be effectively improved by arranging the middle elastic cushion and the elastic cushion under the rail; the tubular body can be inserted into the annular cavity between the first through hole and the boss, so that the position of the rail bearing base plate in the horizontal direction can be fixed; furthermore, the rail bearing backing plate can be pressed through the flange, so that the position of the rail bearing backing plate in the vertical direction can be fixed; secondly, the convenient installation and fixation operation of the rail bearing base plate can be realized through the arrangement of the bolts; in the use, can be with the boss is connected to the bottom of bolt, the nut can be screwed up at the top.
The invention can also realize the adjustment of the relative position of the rail backing plate and the positioning seat through the arrangement of the non-uniform wall thickness of the tubular body, thereby changing the horizontal position of the elastic seat on the steel rail, namely changing the installation position of the steel rail and the relative distance of the steel rail, namely realizing the function of adjusting the rail gauge; the middle point of a connecting line between the centers of the two elastic strip seats and the middle point of a connecting line between the centers of the two first through holes are not coincident, the mounting position of the rail bearing base plate can be changed through rotation, the change of the horizontal position of the elastic strip seats can be realized, the mounting position of the steel rail and the change of the relative distance of the steel rail can be further realized, and the track gauge adjusting capacity of the fastener system can be effectively improved.
The invention can also transmit the compression of the nut to the outer edge position through the arrangement of the locking cover plate, and compress the top end flange of the clamping sleeve through the outer edge of the locking cover plate; the setting of the above-mentioned cell body of accessible can provide the cavity that holds on boss top, and the top that can avoid the in-process boss of screwing pushes up the screw-up inefficacy that causes to the lower surface of locking apron, can effectively guarantee the convenience of later stage operation, can effectively increase the accent ability of fastener.
The positioning seat can be arranged in the track foundation, so that the connection stability of the positioning seat in the track foundation can be effectively improved, and the connection stability of the whole fastener can be further effectively improved; through the arrangement of the drain holes, water accumulation in the boss can be avoided, the condition that the service life of the part is reduced due to corrosion of the water accumulation in the boss can be effectively avoided, and the service life of the part can be effectively prolonged; the protective base plate can protect the middle elastic pad from being damaged by sand possibly appearing on the sleeper; the setting of the backing plate of increaseing of accessible can realize that the fastener increases the function.
In addition, the pre-embedding mentioned in the invention is a popular name, and means that the pre-embedding is prefabricated together with the concrete sleeper through a prefabricating method. In the practical implementation process, the positioning seat can be directly embedded into a concrete track bed foundation by a field pouring method, and can also be fixed into other sleepers such as a wooden sleeper or a composite sleeper by other methods such as bonding, anchoring and the like; those skilled in the art can select the corresponding connection mode according to the actual situation.
In the description of the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood by those skilled in the art that the embodiments of the present invention are described above, but the descriptions are only for the purpose of facilitating understanding of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.
Claims (10)
1. A vibration damping fastener system is characterized by comprising a positioning seat, a bearing rail base plate and a locking structure;
the lower part of the positioning seat is a cylinder for embedding a track foundation, and the upper part of the positioning seat is a boss for connecting a track bearing base plate; the rail bearing base plate is provided with an elastic strip seat and a first through hole for the boss to penetrate through; the locking structure is used for realizing the locking connection between the rail bearing backing plate and the positioning seat.
2. The vibration-damped fastener system according to claim 1 further comprising a middle elastomeric pad and an under-rail elastomeric pad; wherein,
the middle elastic cushion is arranged below the rail bearing backing plate and is provided with a third through hole for the boss to penetrate through; the elastic pad under the rail is arranged above the rail bearing backing plate, and the outer edge of the elastic pad under the rail is provided with an arc-shaped avoiding area matched with the first through hole.
3. The vibration-damped fastener system according to claim 1 wherein the locking structure comprises a retaining sleeve and a bolt; wherein,
the clamping sleeve comprises a tubular body and a flange arranged at the top end of the tubular body, the tubular body is used for being inserted into an annular cavity between the first through hole and the boss, and the flange is used for pressing the rail bearing base plate; the bottom of bolt is used for connecting the boss, the top of bolt is used for connecting the screens cover.
4. The vibration-damped fastener system according to claim 3 wherein the locking structure further comprises a locking cover; wherein,
the middle position of the locking cover plate is provided with a second through hole for the bolt to penetrate through, the top end of the bolt is used for pressing the locking cover plate, and the outer edge of the locking cover plate is used for pressing the flange.
5. The vibration-damped fastener system according to claim 3 or 4,
the bottom end of the bolt is integrally connected with the boss; or,
the bottom end of the bolt is in threaded connection with the boss, and an internal thread groove matched with the bolt is formed in the boss; or,
the bottom end of the bolt is connected with the boss in a clamping mode, the bolt is a T-shaped bolt, and a T-shaped clamping groove matched with the T-shaped bolt is formed in the boss in the positioning seat.
6. The vibration-damped fastener system according to claim 4,
the top end of the bolt is provided with a nut which is used for pressing the locking cover plate; or,
the top end of the bolt is provided with a head structure, and the head structure is used for compressing the locking cover plate.
7. The vibration-damped fastener system according to claim 1, 2, 3 or 4,
the top end of the boss is provided with an installation cavity used for being connected with the locking structure, and the bottom end of the installation cavity is provided with a drain hole.
8. The vibration-damped fastener system according to claim 3, 4 or 6,
the tubular body is a tubular body having a non-uniform wall thickness.
9. The vibration-damped fastener system according to claim 2,
still include the protection backing plate, the below of middle cushion is located to the protection backing plate, the protection backing plate is equipped with the fourth through-hole that is used for the boss to run through.
10. The vibration-damped fastener system according to claim 1 or 2,
the height-adjusting cushion plate is arranged below the rail bearing cushion plate.
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| CN201710003168.1A CN108265571B (en) | 2017-01-03 | 2017-01-03 | Vibration reduction fastener system |
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|---|---|---|---|
| CN201710003168.1A CN108265571B (en) | 2017-01-03 | 2017-01-03 | Vibration reduction fastener system |
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| CN108265571B CN108265571B (en) | 2023-11-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468634A (en) * | 2019-08-29 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | A kind of track vibration-reducing fastener and installation method |
| CN113847318A (en) * | 2021-08-09 | 2021-12-28 | 中铁隆昌铁路器材有限公司 | Anti-loosening embedded sleeve assembly and assembling method thereof |
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468634A (en) * | 2019-08-29 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | A kind of track vibration-reducing fastener and installation method |
| CN110468634B (en) * | 2019-08-29 | 2024-07-09 | 中铁第四勘察设计院集团有限公司 | Rail vibration damping fastener and installation method |
| CN113847318A (en) * | 2021-08-09 | 2021-12-28 | 中铁隆昌铁路器材有限公司 | Anti-loosening embedded sleeve assembly and assembling method thereof |
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
| CN116623477B (en) * | 2023-03-31 | 2023-11-24 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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