CN214033193U

CN214033193U - Elastic fastener applied to railway steel rail

Info

Publication number: CN214033193U
Application number: CN202022564825.XU
Authority: CN
Inventors: 耿传智; 方正
Original assignee: Tong Tech Metro Vibration Control Co ltd
Current assignee: Tong Tech Metro Vibration Control Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-24
Anticipated expiration: 2030-11-09

Abstract

The utility model provides an elastic fastener applied to railway rails, which comprises a rail fixing component and an elastic component, wherein the rail fixing component is fixedly arranged on a rail bearing platform, the elastic component is arranged below the rail bearing platform, and the elastic component is arranged on a railway track bed; the elastic assembly comprises an air chamber cavity, compressed air is filled in the air chamber cavity, the air chamber cavity is connected with the rail bearing platform in a sealing mode, stress on the railway steel rail is transmitted to the air chamber cavity through the rail bearing platform, the compressed air is filled in the air chamber cavity with good sealing performance in a fluid mode as a damping medium, and the air chamber cavity is arranged between the steel rail fixing assembly and the railway track bed, so that vibration noise of the wheel rail is greatly reduced and improved; and a support boss is arranged in the air chamber cavity, is perpendicular to the track bed and is used for limiting the railway steel rail to move along the direction of the railway track bed.

Description

Elastic fastener applied to railway steel rail

Technical Field

The utility model relates to a rail transit technical field especially relates to an elastic fastener who is applied to railway rails.

Background

In rail transit passing through or in downtown areas, vibration and noise generated by noise sources such as rails, vehicles and the like have prominent influence on the surrounding environment, the life and health of people are directly influenced, and the reduction of the vibration and the noise to the maximum extent becomes one of the keys of rail transit construction. The rail traffic vibration and noise control is a comprehensive technology, and corresponding vibration reduction measures need to be taken on the aspects of steel rails, sleepers, fasteners, track beds and the like when the rail structure is subjected to vibration control. For the steel rail, when the wheel rolls over the top surface of the steel rail, the web of the steel rail is thin, and the rail web vibrates, and the vibration radiates to the outside to form noise.

In urban rail transit, in order to reduce the influence of vibration noise on the surrounding environment, an elastic fastener is often adopted to reduce wheel rail vibration and noise generated during train operation. The elastic fastener is used for alleviating vibration and impact of the train wheel rail by providing enough elasticity while keeping good technical performance of the rail structure, and finally achieves the purpose of vibration and noise reduction.

However, the existing elastic fasteners at home and abroad generally utilize the rigidity and damping characteristics of the elastic rubber layer to realize the vibration damping performance of the track structure, and the elastic fasteners using solid rubber as a vibration damping medium have poor vibration damping performance and insufficient transverse rigidity; in addition, the vibration noise problems of polygonal abrasion of wheels, initiation and development of wavy abrasion of steel rails, elastic strip breakage and the like are accelerated.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model aims to provide an elastic fastener with damping effect is obvious and not fragile.

The utility model discloses an elastic fastener applied to railway rails, which comprises a rail fixing component and an elastic component, wherein the rail fixing component is fixedly arranged on a rail bearing platform, the elastic component is arranged below the rail bearing platform, and the elastic component is arranged on a railway track bed; the elastic assembly comprises an air chamber cavity, compressed air is filled in the air chamber cavity, the air chamber cavity is hermetically connected with the rail bearing platform, and stress on the railway steel rail is transmitted to the air chamber cavity through the rail bearing platform; a support boss is arranged in the air chamber cavity, is perpendicular to the track bed and is used for limiting the railway steel rail to move along the direction of the railway track bed; the air inlet channel is arranged on the bearing rail platform and communicated with the air chamber cavity, and an air inlet switch is arranged on the air inlet channel.

Preferably, the air chamber cavity comprises two side walls, the two side walls are perpendicular to the railway track bed, and two sides of the rail bearing platform are hermetically connected with the two side walls, so that the air chamber cavity is a sealed space.

Preferably, a first buffer piece is arranged between the rail bearing platform and the side wall.

Preferably, the rail bearing platform comprises a rail bearing platform and two rail bearing side platforms, and the two rail bearing side platforms are respectively arranged on two sides of the rail bearing platform and are perpendicular to the rail bearing platform; the two rail-bearing side tables are respectively connected with the two side walls in a sealing manner, and when the air chamber cavity is in a full state, the rail-bearing side tables are higher than the side walls.

Preferably, the first buffer member comprises an interlayer buffer member and a connecting buffer member, and the interlayer buffer member is arranged at the overlapping part of the side wall and the bearing rail side platform; the rail supporting side table is not connected with the wall surface of the side wall in superposition with the top end of the side wall through the connecting buffer piece.

Preferably, the interlayer buffer is connected with the connection buffer.

Preferably, a second buffer member is disposed at a top end of the support boss, and contacts the second buffer member when the railway rail moves in the direction along the railway track bed.

Preferably, the rail fixing assembly comprises an elastic strip, the railway rail is fixedly arranged on the rail bearing platform through the elastic strip, elastic strip mounting seats are arranged on two sides of the railway rail, and the elastic strip is arranged on the elastic strip mounting seats; and a rail lower base plate is arranged between the railway steel rail and the rail bearing platform.

Preferably, a mounting gap is formed between the elastic strip mounting seat and the railway steel rail; and a gauge limiting block is arranged in the mounting gap and used for limiting the radial displacement of the railway steel rail in the mounting gap.

Preferably, a mounting bottom plate is arranged between the railway track bed and the elastic assembly, and the mounting bottom plate is fixedly arranged on the railway track bed through an anchoring piece; the support boss is arranged on the mounting base plate.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

1. compressed air is filled in the well-sealed air chamber cavity in a fluid form as a damping medium, and the air chamber cavity is arranged between the steel rail fixing assembly and the railway track bed, so that the vibration noise of the wheel rail is greatly reduced and improved;

2. the air chamber cavity is fixed through the side wall, the steel rail fixing assembly is indirectly fixed, and the overhead railway steel rail is positioned;

3. the first buffer piece is arranged between the side wall of the air chamber cavity and the steel rail fixing assembly, so that the original rigid connection of the air chamber cavity and the steel rail fixing assembly can be converted into elastic medium connection, and the vibration damping effect is further enhanced by matching with the air chamber cavity;

4. the rail supporting side table is arranged to be higher than the side wall when the air chamber cavity is in a full state, and a movement space can be provided for the radial reciprocating motion of the steel rail fixing assembly;

5. the part of the rail bearing side platform, which is higher than the side wall, is also connected with the top end of the side wall through the connecting buffer piece, so that the rail bearing platform is completely connected with the side wall, has strong stability and can bear enough vertical load and longitudinal load;

6. the radial displacement of the steel rail fixing component is limited by the supporting boss, and the buffer force is provided by the second buffer piece, so that large impact force generated by rigid contact is prevented;

7. the railway steel rail is fixedly arranged on the steel rail fixing component through an elastic strip, and a primary vibration damping effect relative to the air chamber cavity and the first buffer piece is provided through the elastic strip.

Drawings

Fig. 1 is a vertical sectional view of a preferred embodiment of the present invention.

Reference numerals: 1-air chamber cavity, 2-rail bearing platform, 3-side wall, 4-first buffer piece, 5-supporting boss, 6-second buffer piece, 7-railway rail, 8-elastic strip, 9-elastic strip mounting seat, 10-gauge limiting block, 11-rail lower backing plate, 12-mounting bottom plate, 13-anchoring piece and 14-air inlet channel.

Detailed Description

The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.

Referring to the attached drawing 1, the utility model discloses a be applied to elastic fastener of railway rail 7, including rail fixed subassembly and elastic component, rail fixed subassembly sets firmly on bearing rail platform 2, and railway rail 7 is fixed in bearing rail platform 2 through rail fixed subassembly on, and bearing rail platform 2 below sets up elastic component, and elastic component locates on the railway roadbed, has greatly reduced through elastic component and has improved the vibration noise of railway rail 7.

Specifically, the elastic assembly comprises an air chamber cavity 1, compressed air is filled in the air chamber cavity 1, the air chamber cavity 1 is connected with a rail bearing platform 2 in a sealing mode, stress on the railway steel rail 7 is transmitted to the air chamber cavity 1 through the rail bearing platform 2, and the compressed air is used as a vibration reduction medium, so that vibration energy is effectively reduced. Because the railway steel rail 7 can be displaced towards the track bed when a train passes or is under other pressure conditions, the supporting lug boss 5 vertical to the track bed is arranged in the air chamber cavity 1, the railway steel rail 7 is supported at a certain height, and the railway steel rail 7 is prevented from collapsing.

In this embodiment, be equipped with intake duct 14 on the support rail platform 2, intake duct 14 and air chamber 1 intercommunication, be equipped with air inlet switch on the intake duct 14, open air inlet switch, it charges compressed gas in to air chamber 1 through intake duct 14, make air chamber 1 inflation be enough to support the fixed subassembly of rail, and with support the boss 5 between have the clearance, make the gas in the air chamber 1 be full of in the fixed subassembly of rail and support between the boss 5, realize the fixed subassembly of rail for air chamber 1 from this, and then realize air chamber 1 and fall the energy-absorbing damping of the fixed subassembly of rail overhead vibration.

Preferably, the air chamber 1 comprises two side walls 3, the two side walls 3 are arranged perpendicular to the railway track bed, and two sides of the rail bearing platform 2 are hermetically connected with the two side walls 3, so that the air chamber 1 is a sealed space. The side wall 3 is made of hard materials, the air chamber cavity 1 is fixed through the side wall 3, the steel rail fixing assembly is indirectly fixed, and the overhead railway steel rail 7 is positioned.

Preferably, two lateral walls 3 and the support rail platform 2 of the air chamber cavity 1 are both hard materials, and the two-phase connection can generate vibration except for the steel rail, the steel rail fixing component and the support rail platform 2, and even if the two-phase connection is fixedly connected by welding, the vibration energy can be caused to pass through the gas medium in the air chamber cavity 1 and be directly transmitted to the railway track bed through the lateral walls 3, so the utility model discloses be equipped with the first buffer member 4 between the support rail platform 2 and the lateral walls 3, set the support rail platform 2 and the lateral walls 3 to be elastically connected, the railway steel rail 7 can carry out reciprocating motion under the pressure due to the compressed gas in the air chamber cavity 1 and the elastic action of the first buffer member 4, on one hand, the vibration energy is prevented from being directly transmitted to the railway track bed, and the vibration damping effect of the gas medium in the air chamber cavity 1 is exerted to the maximum; on the other hand, the buffer piece can be used as another vibration damping piece to absorb vibration energy, so that the noise reduction effect is further enhanced.

In this embodiment, the first buffer 4 is made of rubber, and in other embodiments, other materials with elastic function may be used, which is not limited herein.

Preferably, the rail bearing platform 2 comprises a rail bearing platform and two rail bearing side platforms, and the two rail bearing side platforms are respectively arranged on two sides of the rail bearing platform and are perpendicular to the rail bearing platform; the two rail supporting side tables are respectively connected with the two side walls 3 in a sealing mode through the first buffer parts 4, and when the air chamber cavity 1 is in a full state, the rail supporting side tables are higher than the side walls 3, and a movement space is provided for radial reciprocating motion of the steel rail fixing assembly.

Preferably, the first buffer member 4 comprises an interlayer buffer member and a connecting buffer member, wherein the interlayer buffer member is arranged at the superposed part of the side wall 3 and the bearing rail side platform and is used as a damping medium of the superposed part of the side wall 3 and the bearing rail side platform; and the part of the rail bearing side platform higher than the side wall 3 is also connected with the top end of the side wall 3 through the connecting buffer piece, so that the rail bearing platform 2 is completely connected with the side wall 3, has strong stability and can bear enough vertical load and longitudinal load.

Preferably, the sandwiched buffer is connected to the connecting buffer, so that the first buffer 4 has a complete structure and higher stability. In other embodiments, the sandwiched buffer is not connected to the connection buffer, and the sandwiched buffer may also be implemented without limitation.

Preferably, the top end of the support boss 5 is provided with a second buffer member 6, when the railway rail 7 is displaced towards the track bed when a train passes or is otherwise stressed, the second buffer member 6 is contacted to provide a buffer force, and a large impact force generated by rigid contact between the rail bearing platform 2 and the support boss 5 is prevented.

Preferably, the rail fixing assembly comprises elastic strips 8, elastic strip mounting seats 9 are arranged on two sides of the railway rail 7, the elastic strips 8 are arranged on the elastic strip mounting seats 9 on the two sides, the two sides of the railway rail 7 are fixedly arranged on the rail bearing platform 2 through the elastic strips 8 on the two sides respectively, and primary vibration reduction effects relative to the air chamber cavity 1 and the first buffer piece 4 are provided through the elastic strips 8. And a rail lower cushion plate 11 is arranged between the railway steel rail 7 and the rail bearing platform, and the rail lower cushion plate 11 can also provide a vibration absorption function.

Preferably, an installation gap is formed between the elastic strip installation seat 9 and the railway steel rail 7, and a gauge limiting block 10 is arranged in the installation gap to limit the radial displacement of the railway steel rail 7 in the installation gap and prevent the safety problem caused by the change of the gauge due to the radial displacement of the railway steel rail 7. The gauge limiting block 10 of the embodiment is an insulating block, and safety problems caused by sparks generated by direct friction with the railway steel rail 7 are prevented.

Preferably, a mounting base plate 12 is arranged between the railway track bed and the elastic component, threaded mounting holes are formed in two sides of the mounting base plate 12, the anchoring piece 13 penetrates through the threaded mounting holes to be inserted into the railway track bed, and the mounting base plate 12 is fixedly arranged on the railway track bed through the anchoring piece 13, so that two side walls 3 of the air chamber 1, the rail bearing platform of the rail bearing platform 2 and four surfaces of the mounting base plate 12 form a closed chamber for containing compressed air. The support boss 5 is provided on the mounting baseplate 12.

The utility model provides a pair of be applied to railway rails's elastic fastener's mounting method includes: the installation bottom plate 12 is fixedly arranged on the railway track bed through an anchoring piece 13, and the two side walls 3 are fixedly arranged on the installation bottom plate 12 through welding; fixedly connecting the side wall 3, the first buffer member 4 and the rail bearing side table through a vulcanization process, so that the air chamber cavity 1 becomes a closed cavity; the railway steel rail 7 is fixedly arranged on the rail bearing platform 2 through the steel rail fixing assembly, the air inlet switch is turned on, compressed air with certain pressure is filled into the air chamber cavity 1 through the air inlet channel 14, the air chamber cavity is expanded to a state that the rail bearing side platform is higher than the side wall 3 and the rail bearing platform is not in contact with the supporting boss 5, the air inlet switch is turned off, and the air chamber cavity 1 becomes a closed cavity filled with the compressed air.

It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. The elastic fastener is characterized by comprising a steel rail fixing component and an elastic component, wherein the steel rail fixing component is fixedly arranged on a rail bearing platform, the elastic component is arranged below the rail bearing platform, and the elastic component is arranged on a railway track bed;

the elastic assembly comprises an air chamber cavity, compressed air is filled in the air chamber cavity, the air chamber cavity is hermetically connected with the rail bearing platform, and stress on the railway steel rail is transmitted to the air chamber cavity through the rail bearing platform;

a support boss is arranged in the air chamber cavity, is perpendicular to the track bed and is used for limiting the railway steel rail to move along the direction of the railway track bed;

the air inlet channel is arranged on the bearing rail platform and communicated with the air chamber cavity, and an air inlet switch is arranged on the air inlet channel.

2. The elastic fastener of claim 1, wherein the air chamber comprises two side walls, the two side walls are arranged perpendicular to the railway track bed, and two sides of the rail bearing platform are connected with the two side walls in a sealing manner, so that the air chamber is a sealed space.

3. An elastic fastener according to claim 2, wherein a first buffer member is provided between said rail support platform and said side wall.

4. The elastic fastener of claim 3, wherein the rail supporting platform comprises a rail supporting platform and two rail supporting side platforms, and the two rail supporting side platforms are respectively arranged on two sides of the rail supporting platform and are arranged perpendicular to the rail supporting platform;

the two rail-bearing side tables are respectively connected with the two side walls in a sealing manner, and when the air chamber cavity is in a full state, the rail-bearing side tables are higher than the side walls.

5. The elastic fastener of claim 4, wherein said first cushioning member comprises an interlayer cushioning member and a connecting cushioning member, said interlayer cushioning member is disposed at a portion where said side wall and said rail side platform coincide;

the wall surface of the rail bearing side table, which is not coincided with the side wall, is connected with the top end of the side wall through the connecting buffer piece.

6. An elastic fastener according to claim 5, wherein said interlayer buffer is connected to said connecting buffer.

7. An elastic clip according to claim 1, wherein a second buffer member is provided at a top end of said support boss to contact with said second buffer member when said railway rail moves in a direction along said railway track bed.

8. The elastic fastener of claim 1, wherein the rail fixing assembly comprises an elastic strip, the railway rail is fixed on the rail bearing platform through the elastic strip, elastic strip mounting seats are arranged on two sides of the railway rail, and the elastic strip is arranged on the elastic strip mounting seats;

and a rail lower base plate is arranged between the railway steel rail and the rail bearing platform.

9. An elastic fastener according to claim 8, wherein a mounting gap is provided between said spring bar mounting seat and said railway rail;

and a gauge limiting block is arranged in the mounting gap and used for limiting the radial displacement of the railway steel rail in the mounting gap.

10. The elastic fastener of claim 9, wherein a mounting base plate is disposed between the railway track bed and the elastic member, and the mounting base plate is fixed to the railway track bed by an anchoring member;

the support boss is arranged on the mounting base plate.