CN114517425A - High-damping steel rail stabilizer and stabilizing method - Google Patents
High-damping steel rail stabilizer and stabilizing method Download PDFInfo
- Publication number
- CN114517425A CN114517425A CN202210202258.4A CN202210202258A CN114517425A CN 114517425 A CN114517425 A CN 114517425A CN 202210202258 A CN202210202258 A CN 202210202258A CN 114517425 A CN114517425 A CN 114517425A
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- rail
- damping
- steel rail
- support frame
- elastic
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/60—Rail fastenings making use of clamps or braces supporting the side of the rail
-
- 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
- E01B9/62—Rail fastenings incorporating resilient supports
Abstract
A high-damping steel rail stabilizer and a stabilizing method are disclosed, wherein a steel rail is arranged on a track bed board, stabilizers are arranged on two sides of the steel rail and comprise a base, a support and an elastic part, the base is fixedly connected to the track bed board, the inner side of the elastic part is tightly attached to the steel rail, a cavity is dug in the outer side of the elastic part, one end of the support is embedded in the cavity of the elastic part, and the other end of the support is arranged on the base. The high-damping elastic supporting devices are arranged between the two fasteners and between the track bed plate and the steel rail, so that the restraint degree and integrity of the track bed plate and the steel rail are improved, the vibration form of the steel rail is changed, the continuous support of the steel rail is approximately realized, and the periodic abrasion of the wheel rail caused by the small rigidity and discrete support of the fasteners can be effectively inhibited.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a high-damping steel rail stabilizer and a stabilizing method.
Background
The rapid development of the subway relieves the pressure of urban traffic and causes the problems of vibration noise pollution and the like, so that the vibration reduction and the noise reduction become problems to be solved urgently in the subway construction process. The adoption of the vibration-damping fastener is one of effective measures for relieving environmental vibration and noise, and the vibration-damping fastener becomes a preferred vibration-damping measure in a plurality of medium-low vibration-damping sections with the advantage of relatively low price. The vibration damping fastener has small connection rigidity and good vibration isolation performance, and the impact energy of the wheel and the rail is not easy to be transmitted to the structure below the track bed plate, thereby achieving the purpose of reducing the environmental vibration noise. However, the vibration damping fastener adopts a low-rigidity design to improve the vibration damping effect of the rail and simultaneously increase the deformation of the rail structure, the constraint capacity of the rail structure on the steel rail is reduced, the vibration response of the rail structure is increased, and particularly, the mode of discrete support of the vibration damping fastener is easier to cause the secondary bending dynamic stress caused by the discrete support of the steel rail increased by the discrete support, the high-frequency coupling vibration of the wheel rail is aggravated, the periodic abrasion problem of the wheel rail system is easy to cause, the short wave corrugation of the steel rail and the high-order out-of-round of the wheel are generated, and therefore the high-frequency motion effect of the wheel rail is further aggravated. In addition, most of the existing vibration damping fasteners adopt lower vertical rigidity, inevitably cause the reduction of the transverse rigidity of the fasteners, cause the weakening of the transverse stability of the track, easily cause the steel rail to generate larger steel rail tipping amount when the steel rail is subjected to wheel rail force, thereby causing the remarkable increase of the dynamic gauge, not only affecting the driving safety, but also increasing the abrasion of the wheel rail. The high-frequency vibration of the wheel rail caused by the periodic abrasion of the wheel rail not only aggravates the environmental vibration and influences the riding comfort of the train, but also causes the fatigue damage of the train and a track structure, such as the problems of elastic strip breakage, fastener failure, train axle box damage, framework crack and the like, and causes huge hidden danger to the train running safety. A large amount of manpower and material resources are invested every year in railway track management departments and train operation departments for managing rail corrugation and wheel out-of-round.
The following patents are found to have similarities with the invention through domestic search:
the patent with application number CN201611205613.4 entitled "constrained damping noise reduction plate" mainly increases the damping of the steel rail by adding a constrained damping noise reduction plate composed of a connecting plate and a constraining plate at the rail web of the steel rail, in order to improve the noise reduction capability of the steel rail. And this patent is mainly between two fasteners, set up high damping elastic support device between road bed board and rail, improve the restraint degree and the wholeness of road bed board and rail, change the vibration form of rail, approximately realize the continuous support of rail, can effectively restrain the periodic wearing and tearing of wheel rail that leads to because fastener little rigidity and discrete support, and simultaneously, the rail waist is hugged closely to this high damping elastic support device, orbital structural damping has been improved greatly, the function that has reduction wheel rail high frequency radiation noise, a novel rail connecting device of damping (especially wheel rail periodic wearing and tearing) and the function integrated design of making an uproar of falling is provided.
The patent with publication number CN112796177A and name "an assembled type damping vibration absorber for all-directional common-frequency steel rails" is arranged on the rail web at two sides of a steel rail, the damping vibration absorber is matched with the surface shape of the rail web of the steel rail to utilize the shear reducing performance of rubber, so that the rigidity of the steel rail vibration absorber product is reduced, and the resonance frequency is quickly adjusted by adopting an assembled type replaceable component. And this patent mainly sets up high damping elastic support device between two fasteners, between railway roadbed board and rail, improves the restraint degree and the wholeness of railway roadbed board and rail, changes the vibration form of rail, approximately realizes the continuous support of rail, can effectively restrain because the periodic wearing and tearing of wheel rail that fastener little rigidity and discrete support lead to.
The application number is CN201920833245.0, the name is "a split type wide band rail damping vibration attenuation falls the ware" patent including rail waist damping plate and the jump ring of hugging closely on the rail waist, still including middle regulating block and rail end damping shock absorber, middle regulating block and the contact of rail waist damping plate, the cladding of rail end damping shock absorber is at the rail bottom and with middle regulating block contact, be equipped with a set of regulation hole on rail waist damping plate and middle regulating block contact surface, be equipped with the spacing arch that matches with the regulation hole on middle regulating block, be equipped with the sawtooth surface on middle regulating block and rail end damping shock absorber contact surface, be equipped with the profile of tooth face that matches with the sawtooth surface on the damping shock absorber of rail end. The rail bottom damping shock absorber is ensured to be positioned in the middle position of the two sleepers by the coarse adjustment of the matching of the limiting protrusion and the adjusting hole and the fine adjustment of the serrated surface and the serrated surface, the adjusting mode is convenient and rapid, the rail bottom damping shock absorber can be effectively prevented from moving by the matching of the limiting protrusion and the adjusting hole as well as the matching of the serrated surface and the serrated surface, and the shock absorbing effect is ensured. This patent is mainly between two fasteners, set up high damping elastic support device between road bed board and rail, improve the restraint degree and the wholeness of road bed board and rail, change the vibration form of rail, approximately realize the continuous support of rail, can effectively restrain because the wheel rail periodicity wearing and tearing that fastener little rigidity and discrete support lead to, and simultaneously, the rail waist is hugged closely to this high damping elastic support device, orbital structural damping has been improved greatly, the function that has reduction wheel rail high frequency radiation noise, a novel rail connecting device of damping (especially wheel rail periodicity wearing and tearing) and the function integrated design of making an uproar of falling is provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the steel rail connecting device and the steel rail fixing structure can improve the transverse rigidity of the steel rail on the premise of not influencing the vibration damping effect of the rail, and reduce the vibration noise of the rail by installing damping on the rail web.
In view of the above problems, the technical solution proposed by the present invention is: the utility model provides a high damping rail stabilizer, the rail is installed on the bed board, and the both sides of rail are provided with the stabilizer, and the stabilizer includes base, support and elastic component, and base fixed connection is on the bed board, and the inboard and the rail of elastic component are pasted tightly, and the cavity has been dug in the outside of elastic component, and the one end of support inlays in the cavity of elastic component, the other end of support is installed on the base.
Preferably, the cavity dug at the outer side of the elastic part comprises an upper groove, a middle groove and a lower groove, the upper groove is arranged at the upper end of the elastic part, and the upper groove is sunken towards the upper end of the elastic part; the lower groove is arranged at the lower end of the elastic piece and is sunken towards the lower end of the elastic piece; the middle groove is arranged between the upper groove and the lower groove, and the middle groove is sunken towards the inner side direction of the elastic piece.
Preferably, more than two convex blocks are arranged on the outer side of the elastic part, the convex blocks are arranged in the cavity, the convex blocks protrude towards the outer side of the elastic part, and a middle groove is formed between every two adjacent concave blocks.
Preferably, a stopper extending downward is provided at an outer side of an upper end of the elastic member, and a stopper extending upward is provided at an outer side of a lower end of the elastic member.
Preferably, the support comprises a damping constraint embedded in a cavity of the elastic element, the shape and size of the damping constraint matching the shape and size of the cavity.
Preferably, the support further comprises a support frame and a reinforcing rib, the support frame is bent, one end of the support frame is connected with the damping constraint part, and the other end of the support frame is fixedly connected with the base; the bottom of the reinforcing rib is fixedly connected with the support frame, and the front end of the reinforcing rib is connected with the damping constraining part.
Preferably, the base comprises a hard base body and a soft base body, the top of the soft base body is connected to the bottom of the hard base body, the soft base body is arranged on the ballast bed plate, and the bottom of the soft base body is provided with a convex pattern for increasing friction force.
A high damping steel rail stabilizing method, symmetrically arranging elastic parts at two sides of a steel rail, making the inner sides of the elastic parts tightly attached to the steel rail, and forming a cavity at the outer sides of the elastic parts; the ballast bed plate is provided with a base, a bracket is arranged on the base, and the other end of the bracket is arranged in the cavity of the elastic part.
Preferably, the cavity of the elastic element comprises more than two grooves, one end of the bracket is provided with the damping constraint part, the shape and the size of the damping constraint part are matched with the cavity of the elastic element, and the damping constraint part and the elastic element are mutually meshed.
Preferably, a support frame and a reinforcing rib are arranged in the support, the support frame is bent, one end of the support frame is fixedly connected to the base, and the other end of the support frame is tightly propped against the damping constraint part; and fixedly connecting the bottom of the reinforcing rib with the support frame to enable the front end of the reinforcing rib to prop against the damping constraint part.
The beneficial technical effects of the invention are as follows: the invention mainly aims at the problems of high-frequency coupling vibration and periodic abrasion of the wheel rail caused by discrete support of the steel rail and insufficient transverse rigidity of the steel rail and the problem of high-frequency radiation noise caused by contact friction of the wheel rail, and high-damping elastic supporting devices are arranged between two fasteners, a track bed plate and the steel rail, so that the restraint degree and integrity of the track bed plate and the steel rail are improved, the vibration form of the steel rail is changed, the continuous support of the steel rail is approximately realized, and the periodic abrasion of the wheel rail caused by small rigidity of the fasteners and discrete support can be effectively inhibited; in addition, the torsional rigidity of the steel rail is improved through the elastic support at the rail web, so that the relative sliding of the wheel rail is reduced when a vehicle curve passes through, and the abrasion of the steel rail is reduced when the vehicle curve passes through. Meanwhile, the high-damping elastic supporting device is tightly attached to the rail waist, so that the structural damping of the rail is greatly improved, the function of reducing high-frequency radiation noise of the wheel rail is achieved, and the novel steel rail connecting device with the integrated design of vibration reduction (especially periodic abrasion of the wheel rail) and noise reduction functions is provided. The invention does not need to be directly and rigidly connected with a sleeper or a steel rail, realizes fixed connection through clamping force and self-locking, does not need to open a hole on the sleeper, and greatly simplifies the installation difficulty.
Drawings
FIG. 1 is a schematic view of an embodiment of an overall structure of a track bed slab;
FIG. 2 is a schematic perspective view of the first embodiment;
FIG. 3 is a cross-sectional view of the first embodiment;
FIG. 4 is a cross-sectional view of the elastic member;
FIG. 5 is a schematic cross-sectional view of the second embodiment;
in the figure: 1-a support; 11-a damping restraint; 12-a support frame; 13-reinforcing ribs; 2-a base; 21-a hard seat body; 22-soft base body; 3-an elastic member; 31-middle upper bump; 32-middle lower bump; 33-a stopper; 34-upper groove; 35-a middle groove; 36-lower groove; 4-fastening bolts; 5-steel rail; 6-a fastener; 7-ballast bed plate.
Detailed Description
The invention is further described with reference to the following examples and figures:
example one
As shown in fig. 1 to 4, the stabilizer of the present embodiment includes a bracket 1, a base 2, an elastic member 3, and a fastening bolt 4, where the bracket 1 includes a damping constraint portion 11 in close contact with the elastic member 3 and a support frame 12 connected to the base 2, and the damping constraint portion 11 and the support frame 12 may be welded together, or may be connected by a bolt or other means. Bending the support frame 12 to enable one end of the support frame 1 to press the elastic piece 3 onto the rail web of the steel rail 5 through the damping constraint part 11; and the other end of the support frame 12 is connected with the base 2 through a bolt 4. Set up strengthening rib 13 on the support frame 12, the bottom and the support frame fixed connection of strengthening rib 13, the front end of strengthening rib compresses tightly on the restricted portion of damping, improves this strutting arrangement's part intensity and stability.
The base 2 comprises a hard seat body 21 and a soft seat body 22, in this embodiment, the hard seat body 21 is made of metal, the soft seat body 22 is made of rubber, and the base 2 is formed by vulcanizing the hard seat body 21 and the soft seat body 22. The hard seat body 21 can also be made of a hard material such as plastic, the soft seat body 22 can be made of polyurethane or other elastic materials, and the hard seat body 21 and the soft seat body 22 can be fixedly connected by glue or bolts. The bottom of the base elastic body 22 is provided with a rubber boss or other lines to increase the friction force with the top surface of the ballast bed plate 7.
The cavity dug outside the elastic member 3 includes an upper groove 34, a middle groove 35 and a lower groove 36, the upper groove 34 is disposed at the upper end of the elastic member 3, and the upper groove 34 is recessed toward the upper end of the elastic member 3. In this embodiment, the upper groove 34 is a concave groove formed by 4 planes at the inner side of the stopper 33 at the upper end of the elastic member 3. The lower groove 36 is provided at the lower end of the elastic member 3, and the lower groove 36 is recessed toward the lower end of the elastic member 3. In this embodiment, the lower groove 36 is a groove recessed toward the lower end and surrounded by 3 planes at a position inside the stopper 33 at the lower end of the elastic member 3. The middle groove 35 is provided between the upper groove 34 and the lower groove 36, and the middle groove 35 is recessed toward the inner side of the elastic member 3. In this embodiment, there are only 1 middle groove 35, and the middle groove 35 is defined by the side surfaces of the middle upper convex block 31 and the middle lower convex block 32 and the outer side surface of the elastic member 3, and the cross section of the middle groove is trapezoidal.
In this embodiment, the number of the protruding blocks disposed on the outer side of the elastic member 3 is two, the protruding blocks are disposed in the cavity, the protruding blocks protrude to the outer side of the elastic member 3, and a middle groove 35 is formed between the two concave blocks. The outer side of the upper end of the elastic member 3 is provided with a stopper 33 extending downward, and the outer side of the lower end of the elastic member 3 is provided with a stopper 33 extending upward. In this embodiment, the damping constraining part 11 is embedded in the cavity of the elastic member 3 in an interference manner, and the shape and size of the damping constraining part 11 match with those of the cavity. Therefore, the damping constraining part 11 can be tightly attached to the elastic member 3 and mutually engaged, and the stopper 33 can make the engagement between the damping constraining part 11 and the elastic member 3 more sufficient, so as to effectively prevent the looseness or relative movement between the damping constraining part 11 and the elastic member 3 in the long-term vibration process.
The stabilizer is arranged between the rail fasteners 6 and is mainly used for supporting the rail 5 in an auxiliary way at the curve section of the rail 5, solving the problem of poor stability of the rail 4 at the curve line, the elastic element 3 can be used at the straight end to improve the stability of the steel rail 5, specifically, the elastic element 3 is tightly fixed at the two sides of the web of the steel rail 5 through the bracket 1 and the base 2, and the whole elastic element 3 is transmitted to the base 2 from the bracket 1 to be supported by stress, can greatly improve the torsional rigidity of the steel rail 5, reduce the relative sliding of the steel rail when a vehicle passes through a curve, reduce the wheel-rail corrugation phenomenon caused by insufficient transverse rigidity of the steel rail 5 in the running process of the vehicle, improve the restraint degree and integrity of the track bed plate 7 and the steel rail 5, change the vibration form of the steel rail, approximately realize the continuous support of the steel rail 5, the problem of diseases caused by poor stability of the steel rail due to small rigidity and discrete support of the fastener can be effectively inhibited. Simultaneously because this rail connecting device sets up between rail fastener 6, rail 5 at this department is in unsettled state, therefore this rail connecting device is less to the vertical rigidity influence of rail, can not influence orbital damping effect, and elastic component 3 can also consume the vibration energy of rail 5, and then restrain rail 5's noise.
Example two
Because the model, weight, structure of vehicle differ on different routes, consequently, the stabilizer structure on different routes also can be different. Under some working conditions, the structure in the embodiment can also be adopted to achieve better vibration reduction and stabilization effects. The difference between the present embodiment and the first embodiment is that the elastic member 3 of the present embodiment has no hollow cavity, the elastic member 3 is an integral solid bump, and the thickness of the elastic member 3 is large.
It will be apparent that modifications and variations are possible without departing from the principles of the invention as set forth herein.
Claims (10)
1. The utility model provides a high damping rail stabilizer, the rail is installed on the bed board, and the both sides of rail are provided with the stabilizer, its characterized in that, stabilizer include base, support and elastic component, and base fixed connection is on the bed board, and the inboard and the rail of elastic component are pasted tightly, and the cavity has been dug in the outside of elastic component, and the one end of support inlays in the cavity of elastic component, the other end of support is installed on the base.
2. The high damping steel rail stabilizer according to claim 1, wherein the cavity dug outside the elastic member comprises an upper groove, a middle groove and a lower groove, the upper groove is arranged at the upper end of the elastic member, and the upper groove is sunken towards the upper end of the elastic member; the lower groove is arranged at the lower end of the elastic piece and is sunken towards the direction of the lower end of the elastic piece; the middle groove is arranged between the upper groove and the lower groove, and the middle groove is sunken towards the inner side direction of the elastic piece.
3. The high damping rail stabilizer of claim 2, wherein more than two convex blocks are arranged outside the elastic member, the convex blocks are arranged in the cavity, the convex blocks protrude towards the outside of the elastic member, and a middle groove is formed between two adjacent concave blocks.
4. A high damping rail stabilizer as claimed in claim 2 or 3, wherein the outer side of the upper end of the elastic member is provided with a stopper extending downward, and the outer side of the lower end of the elastic member is provided with a stopper extending upward.
5. A high damping rail stabilizer according to claim 4 in which the mount includes a damping restraint which is embedded in the cavity of the resilient member and the shape and size of the damping restraint matches the shape and size of the cavity.
6. The high-damping steel rail stabilizer according to claim 5, wherein the support frame further comprises a support frame and a reinforcing rib, the support frame is bent, one end of the support frame is connected with the damping constraint part, and the other end of the support frame is fixedly connected with the base; the bottom of the reinforcing rib is fixedly connected with the support frame, and the front end of the reinforcing rib is connected with the damping constraining part.
7. A high damping rail stabilizer as claimed in claim 6, wherein the base comprises a hard base body and a soft base body, the top of the soft base body is connected to the bottom of the hard base body, the soft base body is disposed on the track bed plate, and the bottom of the soft base body is provided with a convex pattern for increasing the friction force.
8. A high damping steel rail stabilizing method is characterized in that elastic pieces are symmetrically arranged on two sides of a steel rail, the inner sides of the elastic pieces are tightly attached to the steel rail, and cavities are formed in the outer sides of the elastic pieces; the ballast bed plate is provided with a base, a bracket is arranged on the base, and the other end of the bracket is arranged in the cavity of the elastic piece.
9. A method for stabilizing a high damping rail according to claim 8 wherein the cavity in the resilient member comprises two or more recesses, and the damping constraint is provided at one end of the bracket and is shaped and sized to fit the cavity in the resilient member so that the damping constraint engages the resilient member.
10. The method for stabilizing a high-damping steel rail according to claim 9, wherein a support frame and a reinforcing rib are arranged in the support frame, the support frame is bent, one end of the support frame is fixedly connected to the base, and the other end of the support frame is tightly pressed against the damping restraining part; and fixedly connecting the bottom of the reinforcing rib with the support frame to enable the front end of the reinforcing rib to tightly prop the damping restriction part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210202258.4A CN114517425A (en) | 2022-03-03 | 2022-03-03 | High-damping steel rail stabilizer and stabilizing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210202258.4A CN114517425A (en) | 2022-03-03 | 2022-03-03 | High-damping steel rail stabilizer and stabilizing method |
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| CN114517425A true CN114517425A (en) | 2022-05-20 |
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| CN202210202258.4A Pending CN114517425A (en) | 2022-03-03 | 2022-03-03 | High-damping steel rail stabilizer and stabilizing method |
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| CN113699836A (en) * | 2021-09-08 | 2021-11-26 | 株洲时代新材料科技股份有限公司 | Steel rail supporting device with vibration and noise reduction effects |
| CN114032713A (en) * | 2021-12-06 | 2022-02-11 | 株洲时代新材料科技股份有限公司 | Steel rail connecting device and steel rail fixing structure |
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2022
- 2022-03-03 CN CN202210202258.4A patent/CN114517425A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103088724A (en) * | 2011-10-29 | 2013-05-08 | 青岛科而泰环境控制技术有限公司 | Rail fixing device with function of vertical guidance |
| CN103088723A (en) * | 2011-10-29 | 2013-05-08 | 青岛科而泰环境控制技术有限公司 | Elastic rail fixing device |
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