Track damping fastener
阅读说明:本技术 一种轨道减振扣件 (Track damping fastener ) 是由 孙井林 潘涛 冉蕾 瞿连辉 马佳骏 黄庆 吴凯伟 薛玥 刘雪锋 于 2019-11-04 设计创作,主要内容包括:本发明公开了一种轨道减振扣件,包括上垫板、下垫板、中间弹性垫板和轨下弹性垫板,所述中间弹性垫板设置于上垫板和下垫板之间,所述轨下弹性垫板设置于上垫板上;所述下垫板上设有凸台,所述上垫板套设在所述凸台外;所述上垫板上设有纵向的第一横向限位面,所述下垫板上设有向上延伸的横向挡肩,所述横向挡肩的上端设有朝向所述第一横向限位面延伸的纵向挡肩;轨道减振扣件还包括横向卡位块,所述横向卡位块设置于第一横向限位面和横向挡肩之间。通过设置横向挡肩结构,能够实现轨道减振扣件较高的横向刚度和较低的垂向刚度的统一,不影响轨道减振扣件的减振效果。(The invention discloses a track vibration-damping fastener which comprises an upper backing plate, a lower backing plate, a middle elastic backing plate and a lower track elastic backing plate, wherein the middle elastic backing plate is arranged between the upper backing plate and the lower backing plate; the lower base plate is provided with a boss, and the upper base plate is sleeved outside the boss; the upper backing plate is provided with a longitudinal first transverse limiting surface, the lower backing plate is provided with an upwardly extending transverse retaining shoulder, and the upper end of the transverse retaining shoulder is provided with a longitudinal retaining shoulder extending towards the first transverse limiting surface; the track vibration reduction fastener further comprises a transverse clamping block, and the transverse clamping block is arranged between the first transverse limiting surface and the transverse blocking shoulder. Through setting up horizontal fender shoulder structure, can realize the unity of the higher transverse rigidity of track damping fastener and lower vertical rigidity, do not influence the damping effect of track damping fastener.)
1. A rail vibration damping fastener comprises an upper backing plate, a lower backing plate, a middle elastic backing plate and a rail lower elastic backing plate, wherein the middle elastic backing plate is arranged between the upper backing plate and the lower backing plate, the rail lower elastic backing plate is arranged on the upper backing plate,
the lower base plate is provided with a boss, and the upper base plate is sleeved outside the boss;
the upper backing plate is provided with a first transverse limiting surface extending upwards, the lower backing plate is provided with a transverse retaining shoulder extending upwards, and the upper end of the transverse retaining shoulder is provided with a longitudinal retaining shoulder extending towards the first transverse limiting surface;
the track vibration damping fastener further comprises a transverse clamping block, and the transverse clamping block is arranged between the first transverse limiting surface and the transverse retaining shoulder.
2. The track vibration damping fastener as claimed in claim 1, wherein the vertical surface of the lateral retaining shoulder facing the first lateral limiting surface is a second lateral limiting surface, and the lateral retaining block includes a third lateral limiting surface for engaging and limiting with the second lateral limiting surface and a fourth lateral limiting surface for engaging and limiting with the first lateral limiting surface.
3. A track dampening fastener according to claim 2 wherein said second and third lateral restraint surfaces are inclined surfaces and said first and fourth lateral restraint surfaces are vertical surfaces.
4. A track dampening fastener according to claim 1 wherein the lower end surface of the longitudinal stop shoulder cooperates with the upper end surface of the lateral stop block for limiting movement.
5. The rail vibration damping fastener as claimed in claim 4, wherein the upper end face of the transverse block is provided with a retaining protrusion, and the longitudinal shoulder is provided with a slot for engaging and limiting with the retaining protrusion.
6. A track fastener according to any one of claims 1 to 5, wherein said lateral stop shoulders are provided on both sides of said lower plate, said first lateral stop surface is provided on both sides of said upper plate, and two lateral stop blocks are provided.
7. A track shock absorbing fastener as claimed in any one of claims 1 to 5, wherein said lower base plate has a through hole in the middle thereof, and said intermediate resilient base plate has a projection on the lower end surface thereof, said projection being received in said through hole.
8. A track dampening fastener according to claim 7, wherein the lower end of the upper plate is provided with a projection and the upper end of the intermediate resilient plate is provided with a cavity, the projection being located in the cavity.
9. The track vibration damping fastener as claimed in any one of claims 1 to 5, wherein said boss is a hollow boss, and a retaining groove is provided on an outer vertical surface of said hollow boss;
the track vibration damping fastener further comprises a connecting sleeve, wherein a buckle and a flange are arranged on the connecting sleeve, the connecting sleeve is sleeved outside the hollow boss, the buckle is connected with the clamping groove in a clamped mode, and the flange is pressed on the upper end face of the upper base plate.
10. The track damping fastener as claimed in claim 9, wherein the hollow boss has a removal hole, and the removal hole is a transverse through hole passing through the side walls of the hollow boss and the locking groove.
Technical Field
The invention relates to the technical field of rail transit, in particular to a rail vibration reduction fastener.
Background
In recent years, with the vibration noise of urban rail transit becoming more serious, effective solution to the problem has become a key area of research in academic and engineering circles. At present, various types of damping fasteners are put forward in the market, wherein the upper locking type double-layer damping fastener is applied more by virtue of higher cost performance, but the damping fastener also has certain problems in the practical application process.
The double-deck damping fastener of upper portion locking formula relies on two-layer elastic backing plate to cushion wheel rail vibration and strikes, realizes the damping effect, still set up two-layer iron backing plate simultaneously in the fastener system, this two-layer iron backing plate and two-layer elastic backing plate set up through certain structure and mutually support, in order to realize keeping the gauge of the track and two core functions of buffering damping of fastener, and the essential requirement of realizing these two functions is that the damping fastener has vertical rigidity than lower, also has higher transverse rigidity. However, in the design of practical products, the two cannot be considered, and when the vertical rigidity of the vibration damping fastener is low, the transverse rigidity is also low, so that the problems of abnormal expansion of the track gauge and the like of the track occur; when the transverse rigidity of the vibration damping fastener is high, the vertical rigidity is also higher, so that the vibration damping effect of the fastener is poor.
In addition, the overall structural design of 'two-layer iron base plate + two-layer elastomer' adopted in the current market leads to the fact that the overall installation height of the damping fastener is higher, the height from the sleeper to the rail bottom of the steel rail is usually more than 56mm, and the installation height of other non-damping fasteners on the track line is generally less than 45 mm. The change of mounting height for damping fastener has to realize the unity with other fasteners through the mounting height that reduces the sleeper face when using, all brings unnecessary trouble and higher cost for construction and later stage operation, dimension guarantor.
Disclosure of Invention
In order to solve at least one of the technical problems, the invention provides a track vibration damping fastener, which can realize the unification of higher transverse rigidity and lower vertical rigidity of the track vibration damping fastener, simultaneously realize the consistency of the integral installation height with the installation height of other non-vibration damping fasteners, and further reduce the construction and later-stage operation maintenance cost.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a rail vibration damping fastener comprises an upper backing plate, a lower backing plate, a middle elastic backing plate and a rail lower elastic backing plate, wherein the middle elastic backing plate is arranged between the upper backing plate and the lower backing plate;
the upper backing plate is provided with a first transverse limiting surface extending upwards, the lower backing plate is provided with a transverse retaining shoulder extending upwards, and the upper end of the transverse retaining shoulder is provided with a longitudinal retaining shoulder extending towards the first transverse limiting surface;
the track vibration damping fastener further comprises a transverse clamping block, and the transverse clamping block is arranged between the first transverse limiting surface and the transverse retaining shoulder.
Optionally, the vertical surface of the transverse retaining shoulder facing the first transverse limiting surface is a second transverse limiting surface, and the transverse retaining block comprises a third transverse limiting surface matched and limited with the second transverse limiting surface and a fourth transverse limiting surface matched and limited with the first transverse limiting surface.
Optionally, the second horizontal limiting surface and the third horizontal limiting surface are inclined surfaces, and the first horizontal limiting surface and the fourth horizontal limiting surface are vertical surfaces.
Optionally, the lower end surface of the longitudinal blocking shoulder is matched with the upper end surface of the transverse clamping block for limiting.
Optionally, a clamping protrusion is arranged on the upper end face of the transverse clamping block, and a clamping groove matched with the clamping protrusion for limiting is arranged on the longitudinal blocking shoulder.
Optionally, the two sides of the lower base plate are provided with the transverse blocking shoulders, the two sides of the upper base plate are provided with the first transverse limiting surfaces, and the number of the transverse blocking blocks is two.
Optionally, a through hole is formed in the middle of the lower cushion plate, a protrusion is arranged on the lower end face of the middle elastic cushion plate, and the protrusion is arranged in the through hole.
Optionally, a protruding portion is arranged on the lower end face of the upper backing plate, a concave cavity is arranged on the upper end face of the middle elastic backing plate, and the protruding portion is arranged in the concave cavity.
Optionally, the boss is a hollow boss, and a clamping groove is formed in an outer vertical surface of the hollow boss;
the track vibration damping fastener further comprises a connecting sleeve, wherein a buckle and a flange are arranged on the connecting sleeve, the connecting sleeve is sleeved outside the hollow boss, the buckle is connected with the clamping groove in a clamped mode, and the flange is pressed on the upper end face of the upper base plate.
Optionally, a disassembly hole is formed in the hollow boss and is a transverse through hole penetrating through the clamping groove and the side wall of the hollow boss.
After the technical scheme is adopted, the invention has the following beneficial effects:
1. the lower backing plate of the track vibration damping fastener is provided with a boss, the upper backing plate is sleeved outside the boss, the boss is transversely limited to the upper backing plate, in addition, the lower backing plate is further provided with a transverse retaining shoulder extending upwards, the upper backing plate is provided with a first transverse limiting surface extending upwards, the transverse clamping block is arranged between the transverse retaining shoulder and the first transverse limiting surface, so that transverse positioning between the upper backing plate and the lower backing plate is realized, the integral transverse rigidity of the track vibration damping fastener is improved, meanwhile, the vertical rigidity of the track vibration damping fastener can be kept low, and the vibration damping effect is not influenced.
In the track damping fastener application process, on the horizontal spacing basis that the cavity boss of lower bolster provided for the upper bolster, transversely keep off the shoulder and transversely block out the piece and still can provide the horizontal spacing of secondary to the upper bolster, effectively improve track damping fastener's whole transverse rigidity.
2. In the rail vibration damping fastener, the lower end surface of an upper backing plate is provided with a protruding part, the upper end surface of a middle elastic backing plate is provided with a concave cavity, and the protruding part of the lower end surface of the upper backing plate is arranged in the concave cavity of the upper end surface of the middle elastic backing plate; the middle part of the lower backing plate is provided with a through hole, the lower end face of the middle elastic backing plate is provided with a bulge, and the bulge is arranged in the through hole in the middle part of the lower backing plate.
Through the arrangement, when the upper padding plate, the middle elastic padding plate and the lower padding plate are tightly assembled, the mounting height of the track vibration damping fastener can be reduced, the mounting height of the track vibration damping fastener is consistent with the mounting height of other non-vibration damping fasteners, and construction and later-stage operation maintenance cost is further reduced.
3. The second transverse limiting surface on the transverse blocking shoulder and the third transverse limiting surface on the transverse clamping block are inclined surfaces, and the first transverse limiting surface on the upper backing plate and the fourth transverse limiting surface on the transverse clamping block are vertical surfaces; the upper end of the transverse blocking shoulder is provided with a longitudinal blocking shoulder extending towards the transverse clamping block, and the lower end surface of the longitudinal blocking shoulder is matched with the upper end surface of the transverse clamping block for limiting; the upper end face of the transverse clamping block is provided with a clamping protrusion, and the longitudinal blocking shoulder is provided with a clamping groove matched with the clamping protrusion for limiting.
Through the arrangement, the inclined plane can conveniently adjust the fit clearance between the transverse blocking shoulder, the transverse clamping block and the upper padding plate, the blocking shoulder structure simultaneously realizes the transverse and longitudinal limiting of the transverse clamping block and the limiting of the transverse clamping block in the parallel direction with the steel rail, and further, the transverse limiting effect of the upper padding plate and the overall transverse rigidity of the track vibration damping fastener are ensured.
4. The horizontal clamping block is provided with a plurality of cavities, so that the contact area of the limiting surfaces of the horizontal retaining shoulder, the horizontal clamping block and the upper backing plate which are in mutual contact is reduced, the friction between two stress surfaces is further reduced, the service lives of the lower backing plate, the horizontal clamping block and the upper backing plate are prolonged, further, the weight of the horizontal clamping block can be reduced, and the use of raw materials is reduced.
5. Hollow bosses are respectively arranged in the diagonal directions of the two sides of the lower backing plate, and clamping grooves are arranged on the outer vertical surfaces of the hollow bosses; the connecting sleeve of the track vibration-damping fastener is provided with a buckle and a flange, when the connecting sleeve is sleeved outside the hollow boss of the lower backing plate, the buckle is clamped with the clamping groove of the hollow boss, meanwhile, the flange of the connecting sleeve is pressed on the upper end surface of the upper backing plate, and the middle elastic backing plate is clamped between the upper backing plate and the lower backing plate.
Through the arrangement, the pre-assembly of the upper padding plate, the lower padding plate, the middle elastic padding plate and the connecting sleeve can be realized, the overall assembly of the track vibration damping fastener is further realized, and the assembly and construction efficiency of the track vibration damping fastener can be greatly improved.
6. The hollow boss of the lower backing plate is provided with a dismounting hole which penetrates through the clamping groove and the side wall of the hollow boss, so that the connecting sleeve, the upper backing plate and the like of the track vibration reduction fastener can be conveniently dismounted step by step.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic view of an assembly structure of a track damping fastener according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the construction of the lower mat shown in FIG. 1;
FIGS. 3A and 3B are schematic structural views of the lateral capture block shown in FIG. 1;
FIGS. 4A and 4B are schematic structural views of the upper mat shown in FIG. 1;
FIGS. 5A and 5B are schematic views showing the structure of the intermediate elastic pad shown in FIG. 1;
fig. 6A and 6B are schematic structural views of the connecting sleeve shown in fig. 1;
FIG. 7 is a schematic view, partially in section, of the track dampening clip of FIG. 1;
fig. 8 is another partial cross-sectional structural view of the track dampening clip of fig. 1.
Reference numerals:
1. a steel rail; 2. an under-rail elastic pad; 3. an anchor bolt; 4. locking the cover plate; 5. connecting sleeves; 51. buckling; 52. a flange; 6. a transverse clamping block; 61. a third transverse limiting surface; 62. a fourth transverse limiting surface; 63. a clamping bulge; 64. a cavity; 7. an upper base plate; 71. a spring strip seat; 72. a first lateral limiting surface; 73. a protrusion; 8. a middle elastic backing plate; 81. a protrusion; 82. a concave cavity; 9. a lower base plate; 91. a transverse shoulder; 92. a second lateral limiting surface; 93. a longitudinal shoulder; 931. a card slot; 94. a hollow boss; 941. a clamping groove; 942. disassembling the hole; 95. a through hole; 10 spring bars.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below 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.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, however, the present disclosure may be practiced otherwise than as specifically described herein, and thus the scope of the present disclosure is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the rail vibration damping fastener comprises an
Optionally, the upper and
Specifically, as shown in fig. 1, the
Alternatively, as shown in fig. 1, the locking cover plate 4 is arranged above the
Through the arrangement, when the steel rail 1 is subjected to a vertically downward wheel rail force, the elastic backing plate 2 under the rail and the middle
Optionally, as shown in fig. 1, fig. 2, fig. 3A, fig. 3B, fig. 4A, fig. 4B and fig. 7, the
Optionally, two lateral retaining shoulders 91 are disposed on two sides of the
Optionally, as shown in fig. 2 and 7, the upper end of the transverse stopping
Alternatively, as shown in fig. 2, fig. 3A, fig. 3B, fig. 4A, fig. 4B and fig. 7, the vertical surface of the
In addition, the second transverse limiting
Optionally, the material of the
Optionally, as shown in fig. 3A, the
Of course, the opening of the cavity 64 may be disposed on the fourth
Alternatively, as shown in fig. 1, fig. 2, fig. 4A, fig. 4B, fig. 5A and fig. 5B, in the rail damper fastener, the lower end surface of the
Through the setting, when realizing that
Alternatively, as shown in fig. 2, 4A, 4B, 5A, 5B, 6A, 6B and 8, a
Through the arrangement, the preassembly of the
Specifically, as shown in fig. 8, the height of the
Optionally, as shown in fig. 2, the
Alternatively, the track damper clip may secure both sides of the rail 1. Specifically, as shown in fig. 1, the track vibration damping fastener includes two locking cover plates 4, two anchor bolts 3, two connecting
In summary, the track vibration damping fastener provided by the embodiment of the invention can realize the unification of higher transverse rigidity and lower vertical rigidity of the track vibration damping fastener by arranging the transverse shoulder blocking structure and the nested structure of the upper backing plate, the middle elastic backing plate and the lower backing plate, and simultaneously realize the consistency of the overall installation height with the installation height of other non-vibration damping fasteners, thereby further reducing the construction and later-stage operation maintenance cost.
In the description of the present invention, the terms "connect", "fasten", etc. should be understood broadly, for example, "connect" 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 herein can be understood by those of ordinary skill in the art as appropriate.
The above embodiments are merely exemplary embodiments of the present invention, and the description thereof is more specific and detailed, and the present invention is not limited to the embodiments adopted for understanding 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 invention as defined by the appended claims.
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