Track fastener for vibration reduction of subway tunnel

Abstract

The utility model relates to the field of rail fasteners, in particular to a rail fastener for vibration reduction of a subway tunnel, which comprises a plurality of bases and a rail body arranged at the tops of the bases, and fastener mechanisms are mounted between the bases and the rail body. Through the arrangement of the buffering assembly, when the track body is instantly stressed, the buffering air bag and the buffering spring at the bottom of the track body can be driven to be stressed, buffering is carried out when the track body descends instantly, and when the buffering air bag is stressed, air in the buffering air bag is conveyed into the piston cylinder through the air pipe, so that the piston plate is jacked upwards; the damper is arranged on the rail body to drive the piston rod on the top of the damper to lift the sliding seat and the buffer block, the buffer performance of the rail body during instant stress is further improved, and the situation that vibration cannot be reduced in time due to insufficient transient response of the damper under the instant action of rapid passing of a train is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rail fastener, specifically a rail fastener for subway tunnel vibration reduction. BACKGROUND

[0002] In recent years, with the rapid development of urban subway tunnel rail transit in China, the vibration and noise problem caused by wheel-rail interaction is increasingly serious, and the use of damping fastener is an effective measure to alleviate this problem. Steel rail fastener is a part used to connect steel rail and sleeper (or other type of track foundation) on the track, also known as intermediate connecting part. Its function is to fix the steel rail on the sleeper, maintain the track gauge and prevent the longitudinal and lateral movement of the steel rail relative to the sleeper. Steel rail fastener includes spikes, under-rail pads and elastic or rigid clamping parts, etc.

[0003] According to the search, as shown in the patent document with authorization announcement number: CN220099540U, the device can have good damping capacity. Compared with the prior art, the device can rapidly reduce the amplitude by adding first and second dampers, thereby improving the damping capacity;

[0004] However, due to the high speed of the train, the damper has insufficient transient response under the instantaneous pressure action of the fast passing train, which leads to the inability to reduce the vibration in time and easily affects the stability of the train during running. INVENTION CONTENTS

[0005] In order to make up for the shortcomings of the prior art, due to the high speed of the train, the damper has insufficient transient response under the instantaneous action of the fast passing train, which leads to the inability to reduce the vibration in time and easily affects the stability of the train during running. The utility model provides a rail fastener for subway tunnel vibration reduction.

[0006] The utility model solves the technical scheme adopted by the technical problem: a rail fastener for subway tunnel vibration reduction, comprising a plurality of bases and a rail body provided on the top thereof, a fastener mechanism is installed between the base and the rail body;

[0007] The fastener mechanism comprises a mounting plate installed on the top of the base, a lateral damping assembly is fixedly installed on both sides of the top of the mounting plate, and a buffer assembly is installed through the surface of the mounting plate and located at the bottom of the rail body;

[0008] The buffer assembly comprises a buffer air bag fixedly installed on the top of the mounting plate, a buffer spring is fixedly installed on both sides of the top of the mounting plate, the top end of the buffer spring is fixedly installed with a buffer block, and the bottom of the two buffer blocks is fixedly installed with a sliding seat.

[0009] Preferably, a mounting groove is formed in the top of the base and the bottom of the mounting plate, the bottom of the sliding seat penetrates the mounting plate and the base in sequence and extends into the mounting groove, a piston cylinder is mounted in the mounting groove, a piston plate is slidably mounted in the piston cylinder, a piston rod is fixedly mounted on the top of the piston plate, the top end of the piston rod penetrates the piston cylinder and is connected with the bottom of the sliding seat, and a return spring is mounted on the bottom of the piston plate and connected with the bottom of the piston cylinder.

[0010] Preferably, a plurality of air pipes are communicated with the bottom of the buffer air bag, and the ends of the air pipes away from the buffer air bag penetrate the mounting plate and the base in sequence and are communicated with the bottom of the piston cylinder.

[0011] Preferably, the lateral damping assembly comprises two track frames fixedly mounted on the top of the mounting plate, an installation cavity is formed in the surface of the track frame, a fixed plate is slidably mounted in the installation cavity, a plurality of spring dampers are mounted on the side of the fixed plate close to the track body, an extrusion block is fixedly mounted on the extension end of the spring damper, an adjusting screw is mounted on the top of the track frame, the end of the adjusting screw located in the installation cavity is rotatably connected with the top of the fixed plate, and the adjusting screw and the track frame are in threaded connection.

[0012] Preferably, a limiting piece is fixedly mounted on the surface of the extrusion block on one side of the fixed plate, and the limiting piece and the extrusion block are in sliding connection.

[0013] Preferably, guide rails are fixedly mounted on both sides in the installation cavity, and sliding grooves matched with the guide rails are formed in both sides of the fixed plate, and the guide rails and the fixed plate are in sliding connection through the sliding grooves.

[0014] Preferably, bolts are mounted on both sides of the top of the mounting plate, and the mounting plate and the base are fixedly connected through the bolts.

[0015] The utility model discloses beneficial effects are as follows:

[0016] 1. The utility model discloses a buffer assembly can drive the buffer air bag and buffer spring of its bottom to bear force when the track body bears force momentarily, buffer when the track body drops momentarily, and the gas in the buffer air bag is transmitted to the inside of the piston cylinder through the air pipe when the buffer air bag bears force, so that the piston plate is lifted upward to drive the piston rod on its top to lift the sliding seat and the buffer block, further improve the buffer performance of the track body when bearing force momentarily, avoid the insufficient transient response of damper under the instantaneous effect of the fast train, and the situation that vibration cannot be reduced in time.

[0017] 2、By the lateral damping assembly is arranged, when the track body appears lateral swing, the track body forms extrusion to the extrusion block, and the extrusion block utilizes the damping performance of the spring damper under stress to form resistance to the extrusion block, so that the track body can have better lateral damping capacity, and further improve the damping performance of the track body, avoid the track body from appearing swing under lateral stress, and influence the stability of the train during running. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a structural schematic diagram of the fastener mechanism of the present application;

[0021] Figure 3 It is a structural schematic diagram of the buffer assembly of the present application;

[0022] Figure 4 It is a structural schematic diagram of the present application Figure 3 It is an enlarged structural schematic diagram of A in the present application;

[0023] Figure 5 It is a structural schematic diagram of the lateral damping assembly of the present application.

[0024] In the figure: 1, base; 2, track body; 3, fastener mechanism; 31, mounting plate; 32, lateral damping assembly; 321, track frame; 322, mounting cavity; 323, fixed plate; 324, spring damper; 325, extrusion block; 326, adjusting screw; 327, limiting piece; 328, guide rail; 33, buffer assembly; 331, buffer air bag; 332, buffer spring; 333, buffer block; 334, sliding seat; 335, piston cylinder; 336, piston plate; 337, piston rod; 338, reset spring; 339, air pipe; 3301, mounting groove; 34, bolt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. Figures 1-5 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. Figure 1 and Figure 5 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. Figure 3 and Figure 4 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. Figure 3The bottom of the buffer air bag 331 is communicated with a plurality of air pipes 339, and the ends of the plurality of air pipes 339 away from the buffer air bag 331 penetrate the mounting plate 31 and the base 1 in turn and are communicated with the bottom of the piston cylinder 335. By arranging the air pipes 339, when the buffer air bag 331 is forced, the gas in the buffer air bag 331 is transmitted to the inside of the piston cylinder 335 through the air pipes 339, so that the piston plate 336 is lifted upward to drive the piston rod 337 at the top of the piston plate 336 to lift the sliding seat 334 and the buffer block 333, further improving the instantaneous response speed of the device, and maintaining the stability of the track body 2 when the track body 2 is forced;

[0032] With reference to Figure 2 And Figure 5 The lateral damping assembly 32 comprises two track frames 321 fixedly installed on the top of the mounting plate 31. The surface of the track frame 321 is provided with a mounting cavity 322. The inside of the mounting cavity 322 is slidably provided with a fixed plate 323. A plurality of spring dampers 324 are installed on the side of the fixed plate 323 close to the track body 2. The extension end of the spring damper 324 is fixedly provided with a pressing block 325. An adjusting screw 326 is penetrated through the top of the track frame 321. The end of the adjusting screw 326 inside the mounting cavity 322 is rotatably connected with the top of the fixed plate 323. The adjusting screw 326 is in threaded connection with the track frame 321. By arranging the lateral damping assembly 32, when the track body 2 shakes laterally, the track body 2 exerts pressure on the pressing block 325. When the pressing block 325 is forced, the damping performance of the spring damper 324 is used to resist the pressing block 325, so as to play a damping buffering role on the side of the track body 2, so that the track body 2 has better lateral damping capacity.

[0033] With reference to Figure 5 A limiting piece 327 is fixedly installed on the side of the fixed plate 323 and on the surface of the pressing block 325. The limiting piece 327 is in sliding connection with the pressing block 325. By arranging the limiting piece 327, the sliding stability of the pressing block 325 can be maintained during the movement of the pressing block 325, so as to avoid the folding of the pressing block 325 and the breakage of the spring damper 324.

[0034] With reference to Figure 5 Both sides of the inside of the mounting cavity 322 are fixedly provided with guide rails 328. Both sides of the fixed plate 323 are provided with sliding grooves matched with the guide rails 328. The guide rails 328 are in sliding connection with the fixed plate 323 through the sliding grooves. By arranging the guide rails 328 and the sliding grooves, the stability of the fixed plate 323 can be maintained when the fixed plate 323 is forced, and the adjusting screw 326 can drive the fixed plate 323 to ascend and descend, so as to better fit the track body 2.

[0035] With reference to Figure 2The bolt 34 is arranged through the top of the two sides of the mounting plate 31, and the mounting plate 31 is fixedly connected with the base 1 through the bolt 34.

[0036] Working principle: when the track body 2 of the train passes through the corresponding track body 2, the track body 2 instantaneously drops to drive the buffer air bag 331 and the buffer spring 332 at the bottom to bear force, and the track body 2 instantaneously drops to buffer, and the buffer air bag 331 bears force, and the gas in the buffer air bag 331 is transmitted to the inside of the piston cylinder 335 through the air pipe 339, so that the piston plate 336 is lifted upward to drive the piston rod 337 at the top to lift the sliding seat 334 and the buffer block 333, further improving the buffering performance of the track body 2 when bearing force, and improving the stability of the track body 2 when bearing force;

[0037] When the track body 2 appears lateral swing, the track body 2 forms extrusion on the extrusion block 325, and the extrusion block 325 forms resistance on the extrusion block 325 by using the damping performance of the spring damper 324 when bearing force, so as to play the role of damping buffer of the side of the track body 2, so that the track body 2 can have better lateral damping capacity.

[0038] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the claimed utility model.

Claims

1. A rail fastener for a subway tunnel vibration reduction, characterized by: Including several base (1), and its top arrangement track body (2), the base (1) with track body (2) between installation has fastener mechanism (3); The fastener mechanism (3) includes a mounting plate (31), the mounting plate (31) is installed on the top of the base (1), both sides of the top of the mounting plate (31) are fixedly installed with lateral damping assembly (32), the surface of the mounting plate (31) and the bottom of the track body (2) are installed with buffer assembly (33) through. The buffer assembly (33) includes a buffer air bag (331) fixedly installed on the top of the mounting plate (31), the top of the mounting plate (31) and both sides of the buffer air bag (331) are fixedly installed with buffer spring (332), the top of the buffer spring (332) is fixedly installed with buffer block (333), and the bottom of the two buffer blocks (333) is fixedly installed with sliding seat (334).

2. The track fastener for a subway tunnel according to claim 1, wherein: The top of the base (1) and the bottom of the mounting plate (31) are provided with a mounting groove (3301), the bottom of the sliding seat (334) is sequentially installed through the mounting plate (31) and the base (1) and extends to the inside of the mounting groove (3301), the inside of the mounting groove (3301) is provided with a piston cylinder (335), the inside of the piston cylinder (335) is slidably installed with a piston plate (336), the top of the piston plate (336) is fixedly installed with a piston rod (337), and the top of the piston rod (337) penetrates the piston cylinder (335) and is connected with the bottom of the sliding seat (334), the bottom of the piston plate (336) is provided with a reset spring (338), and the bottom of the reset spring (338) is connected with the bottom of the inner cavity of the piston cylinder (335).

3. The track fastener for a subway tunnel according to claim 2, wherein: The bottom of the buffer air bag (331) is communicated with a plurality of air pipes (339), and one end of the plurality of air pipes (339) away from the buffer air bag (331) is sequentially installed through the mounting plate (31) and the base (1) and communicated with the bottom of the piston cylinder (335).

4. The track fastener for subway tunnel vibration reduction of claim 1, wherein: The lateral damping assembly (32) includes two track frames (321) fixedly installed on the top of the mounting plate (31), the surface of the track frame (321) is provided with a mounting cavity (322), the inside of the mounting cavity (322) is slidably installed with a fixed plate (323), one side of the fixed plate (323) close to the track body (2) is provided with a plurality of spring dampers (324), the telescopic end of the spring damper (324) is fixedly installed with a pressing block (325), the top of the track frame (321) is installed through an adjusting screw (326), one end of the adjusting screw (326) inside the mounting cavity (322) is rotatably connected with the top of the fixed plate (323), and the adjusting screw (326) and the track frame (321) are threadedly connected.

5. The track fastener for a subway tunnel according to claim 4, wherein: One side of the fixed plate (323) and the surface of the pressing block (325) are fixedly installed with a limiting piece (327), and the limiting piece (327) and the pressing block (325) are slidably connected.

6. The track fastener for a subway tunnel according to claim 4, wherein: Both sides of the installation cavity (322) are fixedly provided with guide rails (328), both sides of the fixed plate (323) are provided with sliding grooves matched with the guide rails (328), and the guide rails (328) and the fixed plate (323) are connected through the sliding grooves.

7. The track fastener for a subway tunnel according to claim 1, wherein: Both sides of the top of the mounting plate (31) are provided with bolts (34), and the mounting plate (31) and the base (1) are fixedly connected through the bolts (34).

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