Locking fastener for rail transit

Abstract

The utility model discloses a locking fastener for rail transit, which comprises a base and a steel rail, an under-rail rubber cushion plate is arranged at the top of the base, a rail iron cushion plate is arranged at the top of the under-rail rubber cushion plate, the steel rail is arranged at the top of the rail iron cushion plate, and gauge stoppers are arranged on the left inner side and the right inner side of the base. A shaft sleeve fixing piece is fixedly installed on the gauge stop block, and elastic strips are installed on the left side and the right side of the shaft sleeve fixing piece. According to the structure, deviation and separation of the elastic strip and the insulating plate caused by vibration in the long-term use process can be avoided, the disc spring is arranged between the locking bolt a and the hoop, loosening of the locking bolt a under vibration is prevented, the stability of the gauge stop block and the elastic strip assembled on the steel rail is improved, and the service life of the gauge stop block is prolonged. And meanwhile, the elastic strip and the shaft sleeve fixing piece as well as the elastic strip inserting shaft sleeve are of inserting structures, so that the elastic strip is convenient to disassemble and replace, and the whole locking fastener structure has the characteristics of simplicity in assembly and disassembly and high damping stability.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically a locking fastener for rail transit. Background Technology

[0002] With the rapid development of rail transit, more and more urban rail transit lines are being laid using elevated lines, ground lines, and other methods, and more and more lines are passing through residential areas and densely populated areas. However, when vehicles are running, the impact between the wheels and the rails causes increased rail vibration. Rail locking fasteners are used in rail transit to reinforce the stability of the rails. These fasteners need to have shock-absorbing and stable requirements, and insulating blocks combined with spring clips can also play a certain role in shock absorption. However, over time, the connection between the insulating blocks and spring clips on the locking fasteners may not be tight enough. Since the contact between the wheels and the rails is rigid, vibration is inevitable. It is necessary to ensure that the insulating blocks are stably pressed down by the spring clips to prevent the insulating blocks from shifting. At the same time, after long-term use, when the spring clip structure bends and deforms, it needs to be disassembled and replaced in time. Therefore, this solution provides a locking fastener for rail transit. Utility Model Content

[0003] The purpose of this utility model is to provide a locking fastener for rail transit to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a locking fastener for rail transit, comprising a base and a rail, wherein a rail under-rail rubber pad is provided on the top of the base, a rail iron pad is provided on the top of the rail under-rail rubber pad, and a rail is provided on the top of the rail iron pad. Track gauge blocks are provided on both the left and right inner sides of the base, and a bushing fixing component is fixedly installed on the track gauge block. Spring strips are installed on both the left and right sides of the bushing fixing component. A hinge spring is provided at the center of the bushing fixing component, and a clamp is connected to the outside of the hinge spring. A locking bolt a is installed on the clamp.

[0005] Insulating plates are installed on both the left and right sides of the bottom of the rail. The surface of the insulating plate is provided with a sliding groove, and a spring clip insertion bushing is slidably connected to the sliding groove. The spring clip insertion bushing and the insulating plate are fixed together by a locking bolt b.

[0006] Preferably, both sides of the rail are limited and blocked by gauge blocks.

[0007] Preferably, the bottom end of the locking bolt a passes through the gauge block and the base thread for fixing, and a disc spring is provided between the locking bolt a and the clamp.

[0008] Preferably, one end of the spring bar is inserted into the bushing fixing member, and the other end of the spring bar is inserted into the spring bar insertion bushing.

[0009] Beneficial effects

[0010] This utility model provides a locking fastener for rail transit, which has the following advantages:

[0011] In this structure, the two insulating plates can be pressed down by the spring clip, and the end of the spring clip is inserted into the spring clip insertion bushing, which prevents the spring clip and the insulating plates from shifting and separating due to vibration during long-term use. There is a disc spring between the locking bolt a and the clamp to prevent the locking bolt a from loosening under vibration, thereby improving the stability of the gauge block and the spring clip assembly on the rail. At the same time, the spring clip and bushing fixing parts, as well as the spring clip insertion bushing, are all plug-in structures, which facilitates the disassembly and replacement of the spring clip. The entire locking fastener structure has the characteristics of simple assembly and disassembly and strong shock absorption and stability. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention;

[0013] Figure 2 This is an enlarged schematic diagram of the assembly structure of the spring bar and insulating plate of this utility model;

[0014] In the diagram: 1. Base; 2. Rail; 3. Rubber pad under rail; 4. Rail pad; 5. Track gauge block; 6. Bushing fastener; 7. Spring clip; 8. Hinge spring; 9. Clamp; 10. Locking bolt a; 11. Insulating plate; 12. Slide groove; 13. Spring clip insertion bushing; 14. Locking bolt b; 15. Disc spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2 This utility model provides a technical solution: a locking fastener for rail transit, including a base 1 and a rail 2, a rail pad 4 is provided at the base, a rail 2 is provided on the top of the rail pad 4, a gauge block 5 is provided on the left and right inner sides of the base 1, a bushing fastener 6 is fixedly installed on the gauge block 5, a spring strip 7 is installed on the left and right sides of the bushing fastener 6, a hinge spring 8 is provided at the center of the bushing fastener 6, a clamp 9 is connected to the outside of the hinge spring 8, and a locking bolt a10 is installed on the clamp 9;

[0017] Insulating plates 11 are provided on the left and right sides of the bottom of the rail 2. The surface of the insulating plate 11 is provided with a sliding groove 12. A spring clip insertion bushing 13 is slidably connected on the sliding groove 12. The spring clip insertion bushing 13 and the insulating plate 11 are fixed together by a locking bolt b14.

[0018] Both sides of rail 2 are limited and blocked by gauge blocks 5.

[0019] The bottom end of the locking bolt a10 passes through the gauge block 5 and the base 1 and is threaded. A disc spring 15 is provided between the locking bolt a10 and the clamp 9.

[0020] One end of the spring clip 7 is inserted into the bushing fixing part 6, and the other end of the spring clip 7 is inserted into the spring clip insertion bushing 13, which facilitates the quick installation and removal of the spring clip 7. At the same time, the hinge spring 8 at the center of the bushing fixing part 6 is fixed to the gauge block 5 by the locking bolt a10, ensuring that the bushing fixing part 6 is stably installed under the action of the locking bolt a10. The hinge spring 8 and the disc spring 15 at the locking bolt a10 are used to increase the shock absorption effect at the gauge block 5.

[0021] In this structure, spring 7 is the intermediate DI spring: clamping force: 12~13KN.

[0022] The specific loading and unloading methods are as follows:

[0023] When assembling the entire locking fastener structure and the rail 2, first place the under-rail rubber pad 3 in the groove on the surface of the base 1, then lay the rail iron pad 4 on the surface of the under-rail rubber pad 3, then lay the rail 2 on the rail iron pad 4, and then place the two gauge blocks 5 on the left and right inner walls of the base 1 respectively to abut against the left and right sides of the rail 2.

[0024] A bushing fixing part 6 is fixed on the gauge block 5. A hinge spring 8 is provided at the center of the bushing fixing part 6. A clamp 9 is connected to the outside of the hinge spring 8. A locking bolt a10 is installed on the clamp 9. The bottom end of the locking bolt a10 passes through the gauge block 5 and is threadedly connected and fixed to the base 1.

[0025] A spring clip 7 is inserted into the outside of the bushing fixing part 6. The other end of the spring clip 7 is inserted into the spring clip insertion bushing 13. Insulating plates 11 are laid on the bottom left and right sides of the rail 2. The spring clip insertion bushing 13 is slidably installed on the surface of the insulating plate 11 through the sliding groove 12. The spring clip insertion bushing 13 can be adjusted by sliding left and right. Then, the spring clip insertion bushing 13 and the insulating plate 11 are locked and fixed by the locking bolt b14. When it is necessary to insert one end of the spring clip insertion bushing 13 and the spring clip 7, the two spring clip insertion bushings 13 are slid from the center of the sliding groove 12 of the insulating plate 11 to the two side edges until the ends of the two spring clips 7 can be fitted and inserted into the spring clip insertion bushing 13. Then, the two spring clip insertion bushings 13 are fixed on the insulating plate 11 by the locking bolt b14.

[0026] Through the above assembly, the two insulating plates 11 on the left and right sides of the bottom of the rail 2 can be pressed down by the spring clip 7, and the end of the spring clip 7 is inserted into the spring clip insertion bushing 13, which prevents the spring clip 7 and the insulating plate 11 from shifting and separating due to vibration during long-term use. There is a disc spring 15 between the locking bolt a10 and the clamp 9 to prevent the locking bolt a10 from loosening under vibration, thereby improving the stability of the gauge block 5 and the spring clip 7 on the rail 2. At the same time, the spring clip 7, the bushing fixing part 6, and the spring clip insertion bushing 13 are all plug-in structures, which facilitates the disassembly and replacement of the spring clip 7. The entire locking fastener structure has the characteristics of simple assembly and disassembly and strong shock absorption and stability.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking fastener for rail transit, comprising a base (1) and a rail (2), characterized in that, The base (1) is provided with a rail under rubber pad (3) on the top, a rail iron pad (4) is provided on the top of the rail under rubber pad (3), a rail (2) is provided on the top of the rail iron pad (4), a gauge block (5) is provided on the left and right inner sides of the base (1), a bushing fastener (6) is fixedly installed on the gauge block (5), a spring strip (7) is installed on the left and right sides of the bushing fastener (6), a hinge spring (8) is provided in the center of the bushing fastener (6), a clamp (9) is connected to the outside of the hinge spring (8), and a locking bolt a (10) is installed on the clamp (9). Insulating plates (11) are provided on the bottom left and right sides of the rail (2). A groove (12) is provided on the surface of the insulating plate (11). A spring clip insertion bushing (13) is slidably connected on the groove (12). The spring clip insertion bushing (13) and the insulating plate (11) are fixed together by locking bolts b (14).

2. A locking fastener for rail transit according to claim 1, characterized in that: The left and right sides of the rail (2) are both limited and blocked by the gauge blocks (5).

3. A locking fastener for rail transit according to claim 1, characterized in that: The bottom end of the locking bolt a (10) is threaded through the gauge block (5) and the base (1) and is fixed. A disc spring (15) is provided between the locking bolt a (10) and the clamp (9).

4. A locking fastener for rail transit according to claim 1, characterized in that: One end of the spring bar (7) is inserted into the bushing fixing member (6), and the other end of the spring bar (7) is inserted into the spring bar insertion bushing (13).

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