CN114635316A - Compound damping backing plate under multistage rigidity rail - Google Patents
Compound damping backing plate under multistage rigidity rail Download PDFInfo
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- CN114635316A CN114635316A CN202210410504.5A CN202210410504A CN114635316A CN 114635316 A CN114635316 A CN 114635316A CN 202210410504 A CN202210410504 A CN 202210410504A CN 114635316 A CN114635316 A CN 114635316A
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- 238000013016 damping Methods 0.000 title claims abstract description 61
- 150000001875 compounds Chemical class 0.000 title claims description 4
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 5
- 230000010485 coping Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
Images
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
- 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
- E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
- E01B9/683—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material layered or composite
-
- 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
- E01B19/003—Means for reducing the development or propagation of noise
-
- 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
-
- 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
- E01B9/688—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape with internal cavities
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a multi-stage rigidity composite vibration damping base plate under a rail, which consists of three base plates, namely an upper elastic layer, a lower elastic layer and a middle supporting layer, wherein a nonlinear rigidity-variable matching structure is arranged between the upper base plate and the lower base plate. The upper elastic layer and the lower elastic layer of the composite vibration damping pad under the rail are made of elastic materials, and the rigidity of the middle supporting layer is larger than that of the upper elastic layer and the lower elastic layer. The composite vibration damping base plate under the rail can have different coping rigidity when being impacted by different loads, has a reasonable stress distribution structure inside, and can ensure that the base plate under the rail keeps good vibration damping performance for a long time and prolong the service life.
Description
Technical Field
The invention relates to a rail lower base plate for vertical vibration reduction and energy absorption of a rail, in particular to a multi-level rigidity rail lower composite vibration reduction base plate, and belongs to the technical field of rail transit.
Background
The subway develops at a high speed, a large number of ballastless tracks are adopted, and the ballastless tracks are connected with the steel rails through fasteners. The rail-track connection device has the functions of effectively ensuring the reliable connection between the rail and the sleeper for a long time, keeping the continuity and the integrity of the rail as much as possible, preventing the longitudinal movement of the rail relative to the sleeper, ensuring the normal gauge, fully playing the buffer and vibration damping performance under the power action of a locomotive vehicle and slowing down the accumulation of the residual deformation of a track. The backing plate is used as an important elastic damping part of the fastener, not only provides proper rigidity, but also plays a role in supporting the steel rail.
At present, the existing backing plate is an elastic linear rigidity-variable backing plate, the rigidity of the backing plate is uniform, and in the actual use process, due to the dynamic action of a vehicle, the stressed conditions of the backing plate at different parts are changed into edge crushing, the thickness of the backing plate is reduced, the rigidity change rate is higher, and the vibration damping performance effect is obviously reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to keep good damping performance and prolong the service life of the under-rail backing plate for a long time.
Aiming at the problems, the technical scheme provided by the invention is as follows:
a multi-stage rigidity composite vibration damping base plate under a rail is composed of multiple layers of base plates, and a nonlinear rigidity-variable matching structure is arranged between the upper and lower adjacent base plates.
Furthermore, the composite vibration damping pad under the rail is composed of an upper elastic layer, a lower elastic layer and a middle supporting layer, wherein the upper elastic layer and the lower elastic layer are made of elastic materials.
Furthermore, the upper surface of the upper elastic layer is provided with a plurality of upper longitudinal pressure expansion grooves and a plurality of upper transverse pressure expansion grooves communicated with the upper longitudinal pressure expansion grooves, and the upper longitudinal pressure expansion grooves penetrate through the front end part and the rear end part of the upper elastic layer; the upper surface of the upper elastic layer is divided into a plurality of upper attaching pressing surfaces by the plurality of upper longitudinal pressure expansion grooves and the plurality of upper transverse pressure expansion grooves.
Further, the lower surface of the lower elastic layer is provided with a plurality of lower longitudinal pressure expansion grooves and a plurality of lower transverse pressure expansion grooves communicated with the lower longitudinal pressure expansion grooves, and the lower longitudinal pressure expansion grooves penetrate through the front end part and the rear end part of the lower elastic layer; the lower surface of the lower elastic layer is divided into a plurality of lower attaching surfaces by the plurality of lower longitudinal pressure expansion grooves and the plurality of lower transverse pressure expansion grooves.
Furthermore, the upper longitudinal pressure expansion groove and the lower longitudinal pressure expansion groove and the upper transverse pressure expansion groove and the lower transverse pressure expansion groove are arranged in a staggered mode, the lower longitudinal pressure expansion groove is located right below the upper adhering and pressing surfaces which are longitudinally arranged in a row, and the lower transverse pressure expansion groove is located right below the upper adhering and pressing surfaces which are transversely arranged in a row.
Further, the lower surface of the upper elastic layer is attached to the upper surface of the middle supporting layer, and the upper surface of the lower elastic layer is attached to the lower surface of the middle supporting layer.
Furthermore, the lower surface of the upper elastic layer is provided with a plurality of first circular grooves which are positioned right below the upper attaching pressure surface, the upper surface of the middle supporting layer is provided with a plurality of first bosses which correspond to the first circular grooves in position, the first bosses are inserted into the first circular grooves, a first spacing space is formed between the top end surfaces of the first bosses and the bottom surfaces of the first circular grooves, and the first bosses can move up and down in the first circular grooves; the upper surface of the lower elastic layer is provided with a plurality of circular grooves II which are positioned right above the lower pressing surface, the lower surface of the middle supporting layer is provided with a plurality of bosses II corresponding to the positions of the circular grooves II in position, the bosses II are inserted into the circular grooves II, an interval space II is arranged between the top end surface of the boss II and the groove bottom surface of the circular grooves II, and the bosses II can move up and down in the circular grooves II.
Furthermore, the first round groove is provided with a first damping air hole communicated with the upper longitudinal pressure expansion groove and/or the upper transverse pressure expansion groove, and the second round groove is provided with a second damping air hole communicated with the lower longitudinal pressure expansion groove and/or the lower transverse pressure expansion groove.
Further, the axial cross sections of the groove wall of the first circular groove and the groove wall of the second circular groove are both arc-shaped concave arc groove walls which are circumferentially concave, the top end portion of the first boss and the top end portion of the second boss are both provided with circumferentially convex contact wall edges, and the contact wall edges are in contact with the concave arc groove walls at the maximum diameter position under normal conditions.
Further, the rigidity of the middle supporting layer is greater than the rigidity of the upper elastic layer and the lower elastic layer; the middle supporting layer takes a longitudinal central line as a boundary, and the thickness of the middle supporting layer gradually increases from the longitudinal central line to two sides; the cross section of the lower surface of the upper elastic layer and/or the upper surface of the lower elastic layer is V-shaped corresponding to the thickness change of the middle supporting layer.
Has the advantages that: different coping rigidity can be achieved when different loads are impacted, the reasonable stress distribution structure is arranged inside the pad, and the pad under the rail can keep good vibration damping performance for a long time and prolong the service life.
Drawings
FIG. 1 is a schematic view of the installation of the composite vibration-damping pad under a rail under a steel rail;
FIG. 2 is a schematic perspective view of the composite vibration damping shim plate under the rail, showing primarily the upper surface of the composite vibration damping shim plate under the rail;
FIG. 3 is a schematic perspective view of the composite vibration damping shim plate under a rail, showing primarily the lower bottom surface of the composite vibration damping shim plate under a rail;
FIG. 4 is a schematic perspective view of the upper resilient layer of the composite vibration-damping pad under the rail;
FIG. 5 is a schematic perspective view of the middle support layer of the composite vibration-damping pad under the rail;
FIG. 6 is a schematic perspective view of the lower resilient layer of the composite vibration damping shim plate under the rail;
FIG. 7 is a schematic partial cross-sectional view of the composite vibration-damping pad under rail;
FIG. 8 is a disassembled view of a partial cross-sectional schematic view of the composite vibration damping pad under rail.
In the figure: 1000. compound damping backing plate under the rail; 1. an upper elastic layer; 101. an upper longitudinal pressure expansion slot; 102. an upper transverse pressure expansion slot; 103. pasting a pressing surface on the surface; 104. a first circular groove; 105. a first interval space; 106. damping air holes I; 2. a middle support layer; 201. a first boss; 202. a second boss; 3. a lower elastic layer; 301. a lower longitudinal pressure expansion groove; 302. a lower transverse pressure expansion slot; 303. pressing the surface downwards; 304. a second circular groove; 305. a second spacing space; 306. a second damping air hole; 4. a groove wall of the concave arc surface; 5. a wall-contacting edge; 6. a steel rail; 7. an iron backing plate.
Detailed Description
The invention is further described with reference to the following examples and figures:
example one
As shown in fig. 1 and 2, a multi-stage stiffness composite damping pad 1000 under a rail is composed of a plurality of layers of pads, and a nonlinear stiffness-variable matching structure is arranged between upper and lower adjacent pads. Therefore, the steel rail 6 can have different coping rigidity when subjected to different load impacts, a reasonable stress distribution structure is arranged inside the steel rail, and the under-rail pad can keep good vibration damping performance for a long time and prolong the service life of the under-rail pad.
As shown in fig. 2 and 3, the multi-stage stiffness composite damping pad 1000 for a rail is preferably composed of three layers of pads, namely, an upper elastic layer 1, a lower elastic layer 3 and a middle support layer 2, wherein the upper elastic layer 1 and the lower elastic layer 3 are made of elastic materials.
As shown in fig. 4 to 8, the upper surface of the upper elastic layer 1 has a plurality of upper longitudinal pressure-expansion grooves 101 and a plurality of upper transverse pressure-expansion grooves 102 communicated with the upper longitudinal pressure-expansion grooves 101, the upper longitudinal pressure-expansion grooves 101 penetrate through the front end and the rear end of the upper elastic layer 1; a plurality of upper longitudinal expansion channels 101 and a plurality of upper transverse expansion channels 102 divide the upper surface of the upper elastomeric layer 1 into a plurality of upper press surfaces 103. The upper attaching pressing surface 103 is contacted with the bottom of the steel rail 6, and when the upper attaching pressing surface 103 is impacted by load, the elastic body in the area of the upper attaching pressing surface 103 expands and fills the surrounding upper longitudinal expansion groove 101 and upper transverse expansion groove 102. When the upper longitudinal expansion grooves 101 and the upper transverse expansion grooves 102 are filled, the gas in the upper longitudinal expansion grooves 101 and the upper transverse expansion grooves 102 is discharged through the upper longitudinal expansion grooves 101 at the front end portion and the rear end portion of the upper elastic layer 1.
The lower surface of the lower elastic layer 3 is provided with a plurality of lower longitudinal pressure-expansion grooves 301 and a plurality of lower transverse pressure-expansion grooves 302 communicated with the lower longitudinal pressure-expansion grooves 301, and the lower longitudinal pressure-expansion grooves 301 penetrate through the front end part and the rear end part of the lower elastic layer 3; a plurality of lower longitudinal expansion grooves 301 and a plurality of lower transverse expansion grooves 302 divide the lower surface of the lower elastic layer 3 into a plurality of lower contact surfaces 303. The lower contact surface 303 is in contact with the lower iron shim plate 7, and when the lower contact surface 303 is subjected to load impact, the elastic body in the area of the lower contact surface 303 expands and fills the surrounding lower longitudinal expansion groove 301 and lower transverse expansion groove 302. When the lower longitudinal expansion grooves 301 and the lower transverse expansion grooves 302 are filled, the gas in the lower longitudinal expansion grooves 301 and the lower transverse expansion grooves 302 is discharged through the lower longitudinal expansion grooves 301 at the front end portion and the rear end portion of the upper elastic layer 1.
The upper longitudinal pressure expansion groove 101 and the lower longitudinal pressure expansion groove 301 and the upper transverse pressure expansion groove 102 and the lower transverse pressure expansion groove 302 are arranged in a staggered mode, the lower longitudinal pressure expansion groove 301 is located right below the upper attaching pressure surface 103 which is longitudinally arranged in a row, and the lower transverse pressure expansion groove 302 is located right below the upper attaching pressure surface 103 which is transversely arranged in a row. The design is that when the middle support layer 2 has certain elasticity, the upper attaching and pressing surface 103 has certain space for pressing and deforming downwards, and the lower attaching and pressing surface 303 has certain space for pressing and deforming upwards.
The lower surface of the upper elastic layer 1 is attached to the upper surface of the middle support layer 2, and the upper surface of the lower elastic layer 3 is attached to the lower surface of the middle support layer 2. However, the lower surface of the upper elastic layer 1 is provided with a plurality of circular grooves I104 which are positioned right below the upper attaching and pressing surface 103, the upper surface of the middle supporting layer 2 is provided with a plurality of bosses I201 which correspond to the positions of the circular grooves I104, the bosses I201 are inserted into the circular grooves I104, a spacing space I105 is arranged between the top end surface of the bosses I201 and the groove bottom surface of the circular grooves I104, and the bosses I201 can move up and down in the circular grooves I104; the upper surface of the lower elastic layer 3 is provided with a plurality of second circular grooves 304 which are positioned right above the lower abutting surface 303, the lower surface of the middle support layer 2 is provided with a plurality of second bosses 202 with positions corresponding to the positions of the second circular grooves 304, the second bosses 202 are inserted into the second circular grooves 304, a second spacing space 305 is formed between the top end surfaces of the second bosses 202 and the groove bottom surfaces of the second circular grooves 304, and the second bosses 202 can move up and down in the second circular grooves 304. When subjected to a load impact, both the first 105 and second 305 compartments are compressed.
With the above arrangement, when the composite vibration damping pad 1000 under the rail is subjected to load impact, the upper elastic layer 1 and the lower elastic layer 3 are integrally deformed, so that the first boss 201 moves upward in the first circular groove 104, and the first spacing 105 is compressed, and the second boss 202 moves downward in the second circular groove 304, and the second spacing 305 is compressed. This deformation process changes the stiffness of the in-track composite damping pad 1000 substantially close to a linear change. When the composite vibration damping pad plate 1000 under the rail encounters increased load impact, the elastic bodies in the areas where the upper attaching pressing surface 103 and the lower attaching pressing surface 303 are located deform, at this time, the elastic bodies in the areas where the upper attaching pressing surface 103 and the lower attaching pressing surface 303 are located participate in vibration damping deformation, and the composite vibration damping pad plate 1000 under the rail integrally shows a steep increase in rigidity and changes in nonlinear variable rigidity, so that the composite vibration damping pad plate 1000 under the rail has nonlinear variable rigidity changes adapted to different load impacts.
The first round groove 104 is provided with a first damping air hole 106 communicated with the upper longitudinal expansion groove 101 and/or the upper transverse expansion groove 102, and the second round groove 304 is provided with a second damping air hole 306 communicated with the lower longitudinal expansion groove 301 and/or the lower transverse expansion groove 302. When the first spacing space 105 and the second spacing space 305 are compressed by impact, the gas in the first spacing space 105 and the second spacing space 305 is exhausted from the first damping gas hole 106 and the second damping gas hole 306 respectively in a damping energy consumption mode. When the impact load is relieved, the external air is sucked into the first spacing space 105 and the second spacing space 305 through the first damping air hole 106 and the second damping air hole 306 respectively in a damping energy dissipation mode by virtue of the elastic restoring force of the upper elastic layer 1 and the lower elastic layer 3. Thus, the composite vibration damping pad 1000 under the rail has better vibration damping and energy absorbing characteristics.
Axial sections of the groove wall of the first circular groove 104 and the groove wall of the second circular groove 304 are both arc-shaped concave arc groove walls 4 which are concave in the circumferential direction, the top end portion of the first boss 201 and the top end portion of the second boss 202 are both provided with circumferentially convex contact wall edges 5, and the contact wall edges 5 are in contact with the concave arc groove walls 4 at the maximum diameter under the normal condition that no load impact is encountered. When the shock absorber is subjected to load shock, the inward pushing of the first boss 201 and the second boss 202 enables the contact wall edges 5 to encounter the gradually increased resistance of the groove wall 4 of the concave cambered surface, so that the linear variable stiffness can be converted into the nonlinear variable stiffness to adapt to the continuously increased load shock.
The rigidity of the middle supporting layer 2 is greater than that of the upper elastic layer 1 and the lower elastic layer 3; the middle supporting layer 2 is bounded by a longitudinal central line, and the thickness of the middle supporting layer is gradually increased from the longitudinal central line to two sides; the cross section of the lower surface of the upper elastic layer 1 and/or the upper surface of the lower elastic layer 3 is V-shaped corresponding to the thickness change of the middle supporting layer. Such a design actually gives the composite damping pad 1000 a greater damping effect in the longitudinal middle portion under the rail to accommodate the greater impact force in the longitudinal middle portion under the rail 6.
The above-described embodiments are intended to illustrate the invention more clearly and should not be construed as limiting the scope of the invention covered thereby, any modification of the equivalent should be considered as falling within the scope of the invention covered thereby.
Claims (10)
1. The utility model provides a compound damping backing plate under multistage rigidity rail which characterized in that: the device consists of a plurality of layers of base plates, and a nonlinear variable-rigidity matching structure is arranged between the upper base plate and the lower base plate.
2. The multi-level stiffness underfoot composite damping pad of claim 1, wherein: the cushion is composed of an upper elastic layer (1), a lower elastic layer (3) and a middle supporting layer (2), wherein the upper elastic layer (1) and the lower elastic layer (3) are made of elastic materials.
3. The multi-level stiffness underfoot composite damping pad of claim 1, wherein: the upper surface of the upper elastic layer (1) is provided with a plurality of upper longitudinal pressure expansion grooves (101) and a plurality of upper transverse pressure expansion grooves (102) communicated with the upper longitudinal pressure expansion grooves (101), and the upper longitudinal pressure expansion grooves (101) penetrate through the front end part and the rear end part of the upper elastic layer (1); the upper surface of the upper elastic layer (1) is divided into a plurality of upper attaching and pressing surfaces (103) by a plurality of upper longitudinal pressure and expansion grooves (101) and a plurality of upper transverse pressure and expansion grooves (102).
4. The multi-level stiffness underfoot composite damping pad of claim 3, wherein: the lower surface of the lower elastic layer (3) is provided with a plurality of lower longitudinal pressure-expansion grooves (301) and a plurality of lower transverse pressure-expansion grooves (302) communicated with the lower longitudinal pressure-expansion grooves (301), and the lower longitudinal pressure-expansion grooves (301) penetrate through the front end part and the rear end part of the lower elastic layer (3); the lower surface of the lower elastic layer (3) is divided into a plurality of lower attaching surfaces (303) by a plurality of lower longitudinal pressure-expansion grooves (301) and a plurality of lower transverse pressure-expansion grooves (302).
5. The multi-level stiffness underfoot composite damping pad of claim 4, wherein: the upper longitudinal pressure expansion groove (101) and the lower longitudinal pressure expansion groove (301) and the upper transverse pressure expansion groove (102) and the lower transverse pressure expansion groove (302) are arranged in a staggered mode, the lower longitudinal pressure expansion groove (301) is located right below the upper pressure sticking surfaces (103) which are arranged in a longitudinal row, and the lower transverse pressure expansion groove (302) is located right below the upper pressure sticking surfaces (103) which are arranged in a transverse row.
6. The multi-level stiffness underfoot composite damping pad of claim 5, wherein: the lower surface of the upper elastic layer (1) is attached to the upper surface of the middle supporting layer (2), and the upper surface of the lower elastic layer (3) is attached to the lower surface of the middle supporting layer (2).
7. The multi-level stiffness underfoot composite damping pad of claim 6, wherein: the lower surface of the upper elastic layer (1) is provided with a plurality of first circular grooves (104) which are positioned right below the upper attaching pressure surface (103), the upper surface of the middle supporting layer (2) is provided with a plurality of first bosses (201) which correspond to the first circular grooves (104), the first bosses (201) are inserted into the first circular grooves (104), a spacing space I (105) is reserved between the top end surfaces of the first bosses (201) and the groove bottom surfaces of the first circular grooves (104), and the first bosses (201) can move up and down in the first circular grooves (104); the upper surface of the lower elastic layer (3) is provided with a plurality of second circular grooves (304) which are positioned right above the lower pressing surface (303), the lower surface of the middle supporting layer (2) is provided with a plurality of second bosses (202) which correspond to the second circular grooves (304) in position, the second bosses (202) are inserted into the second circular grooves (304), a second spacing space (305) is formed between the top end surface of the second bosses (202) and the groove bottom surface of the second circular grooves (304), and the second bosses (202) can move up and down in the second circular grooves (304).
8. The multi-level stiffness underfoot composite damping pad of claim 7, wherein: the first round groove (104) is provided with a first damping air hole (106) communicated with the upper longitudinal expansion groove (101) and/or the upper transverse expansion groove (102), and the second round groove (304) is provided with a second damping air hole (306) communicated with the lower longitudinal expansion groove (301) and/or the lower transverse expansion groove (302).
9. The multi-level stiffness underfoot composite damping pad of claim 7, wherein: axial sections of the groove wall of the first circular groove (104) and the groove wall of the second circular groove (304) are both arc-shaped concave arc groove walls (4) which are concave in the circumferential direction, the top end portion of the first boss (201) and the top end portion of the second boss (202) are both provided with circumferentially convex contact wall edges (5), and the contact wall edges (5) are in contact with the concave arc groove walls (4) at the maximum diameter position under normal conditions.
10. The multi-stage stiffness underfloor composite damping pad according to any one of claims 1 to 9, wherein: the rigidity of the middle supporting layer (2) is greater than the rigidity of the upper elastic layer (1) and the lower elastic layer (3); the middle supporting layer (2) takes a longitudinal central line as a boundary, and the thickness of the middle supporting layer is gradually increased from the longitudinal central line to two sides; the cross section of the lower surface of the upper elastic layer (1) and/or the upper surface of the lower elastic layer (3) is V-shaped corresponding to the thickness change of the middle supporting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410504.5A CN114635316A (en) | 2022-04-19 | 2022-04-19 | Compound damping backing plate under multistage rigidity rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410504.5A CN114635316A (en) | 2022-04-19 | 2022-04-19 | Compound damping backing plate under multistage rigidity rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635316A true CN114635316A (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210410504.5A Pending CN114635316A (en) | 2022-04-19 | 2022-04-19 | Compound damping backing plate under multistage rigidity rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635316A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004050996A1 (en) * | 2002-12-03 | 2004-06-17 | Pandrol Limited | An abrasion assembly for supporting railroad ties related |
| CN200955109Y (en) * | 2006-10-16 | 2007-10-03 | 北京中科用通新材料技术有限公司 | Small-resistance high-elasticity shock-absorbing backing board |
| CN201901820U (en) * | 2010-05-31 | 2011-07-20 | 北京中科用通减振技术有限公司 | Vibration-absorbing backing plate with micropore/frustum structures |
| CN203546535U (en) * | 2013-11-01 | 2014-04-16 | 王琴兰 | Heavy load base plate with high friction coefficient |
| CN109385933A (en) * | 2017-08-04 | 2019-02-26 | 洛阳双瑞橡塑科技有限公司 | A kind of Damping fastening system of sandwich plate |
| CN111353207A (en) * | 2018-12-21 | 2020-06-30 | 洛阳双瑞橡塑科技有限公司 | Rigidity homogenization design method and system for fastener in turnout area |
| CN113403892A (en) * | 2021-06-25 | 2021-09-17 | 株洲时代新材料科技股份有限公司 | Method for increasing damping performance of steel rail damper and steel rail damper |
-
2022
- 2022-04-19 CN CN202210410504.5A patent/CN114635316A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004050996A1 (en) * | 2002-12-03 | 2004-06-17 | Pandrol Limited | An abrasion assembly for supporting railroad ties related |
| CN200955109Y (en) * | 2006-10-16 | 2007-10-03 | 北京中科用通新材料技术有限公司 | Small-resistance high-elasticity shock-absorbing backing board |
| CN201901820U (en) * | 2010-05-31 | 2011-07-20 | 北京中科用通减振技术有限公司 | Vibration-absorbing backing plate with micropore/frustum structures |
| CN203546535U (en) * | 2013-11-01 | 2014-04-16 | 王琴兰 | Heavy load base plate with high friction coefficient |
| CN109385933A (en) * | 2017-08-04 | 2019-02-26 | 洛阳双瑞橡塑科技有限公司 | A kind of Damping fastening system of sandwich plate |
| CN111353207A (en) * | 2018-12-21 | 2020-06-30 | 洛阳双瑞橡塑科技有限公司 | Rigidity homogenization design method and system for fastener in turnout area |
| CN113403892A (en) * | 2021-06-25 | 2021-09-17 | 株洲时代新材料科技股份有限公司 | Method for increasing damping performance of steel rail damper and steel rail damper |
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Application publication date: 20220617 |
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