Vibration reduction backing plate of vibration reduction fastener and vibration reduction fastener

Abstract

The utility model relates to the technical field of rail transit, in particular to a vibration reduction base plate of a vibration reduction fastener, the vibration reduction base plate of the vibration reduction fastener comprises a plate body, two sides of the plate body in the width direction are respectively provided with a first vibration reduction part, the two first vibration reduction parts are both arranged at the maximum pressure position on the plate body, and the first vibration reduction parts are arranged on the plate body. The two first vibration reduction parts are obliquely arranged, the highest points of the two first vibration reduction parts are both close to the central axis of the plate body, and the sections of the two first vibration reduction parts are both in a T shape. When the vibration reduction base plate is pressed, the first vibration reduction part is firstly pressed on the vibration reduction base plate mounted in the middle of the vibration reduction fastener, and the stress of the part, which is originally pressed to the greatest extent, on the plate body is reduced, so that the stress on the vibration reduction base plate is more uniform, the stress surface structure of the vibration reduction base plate is matched with the stress, and the transverse vibration reduction effect of the vibration reduction base plate is effectively improved; and the compression resistance of the vibration reduction base plate is improved, so that the service life of the vibration reduction base plate can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a vibration-damping pad of a vibration-damping fastener and the vibration-damping fastener. Background Art

[0002] Rail transit is a land transportation mode in which locomotives pull train vehicles on two parallel rails. The track structure is an important factor causing vibration and noise. In order to control vibration and noise, in the prior art, vibration-damping fasteners and rubber pads are usually used together under the rails. The rubber pad for railway track structure is an important component in the track structure and is installed between the steel rails and concrete sleepers. Its main function is to buffer the high-speed vibration and impact generated when vehicles pass through the rails, protect the roadbed and sleepers, and electrically insulate the signal system.

[0003] The existing vibration damping pads usually have a plane structure on their force-bearing surfaces, and the vibration damping pads are usually installed on both sides of the roadbed together with the vibration damping fasteners. Therefore, the force on the vibration damping pads is usually biased to one side, that is, the force on the force-bearing surface of the vibration damping pads is not uniform, which is incompatible with the structure of the force-bearing surface of the existing vibration damping pads. As a result, the service life of the vibration damping pads is not high. Utility Model Content

[0004] Based on the technical problems existing in the above-mentioned prior art, the utility model provides a vibration-damping pad of a vibration-damping fastener, which can increase the service life of the vibration-damping pad.

[0005] The technical solution adopted by the utility model to solve its technical problems is: providing a vibration-damping pad of a vibration-damping fastener, which is used for the vibration-damping fastener, wherein the vibration-damping pad of the vibration-damping fastener is installed in the middle part of the vibration-damping fastener, and the vibration-damping pad of the vibration-damping fastener includes a plate body, and a first vibration-damping part is provided on both sides of the plate body in the width direction, and the two first vibration-damping parts are both arranged at the maximum pressure point on the plate body, and the two first vibration-damping parts are inclined, and the highest points of the two first vibration-damping parts are close to the central axis of the plate body, and the cross-sections of the two first vibration-damping parts are both T-shaped.

[0006] Furthermore, a plurality of pressure dividing protrusions are provided on the first vibration reduction part.

[0007] Furthermore, the pressure-dividing protrusion is provided with a conical pressure-bearing surface.

[0008] Furthermore, a vibration-damping protrusion is provided on the plate body, and the vibration-damping protrusion is a circular protrusion.

[0009] Furthermore, the height of the vibration-damping protrusion is lower than the height of the first vibration-damping portion.

[0010] Furthermore, the plate body is also provided with a pressure relief hole.

[0011] Furthermore, the pressure relief hole is arranged in the middle of the plate body.

[0012] Furthermore, the vibration-damping pad of the vibration-damping fastener also includes a plurality of sound-absorbing cottons, and the plate body is provided with sound-absorbing holes for placing the sound-absorbing cottons.

[0013] Based on the above-mentioned problems existing in the prior art, the second purpose of the utility model is to provide a vibration-damping fastener having a vibration-damping pad of the vibration-damping fastener in any of the above-mentioned schemes, the vibration-damping fastener also including a rail arranged above the vibration-damping pad of the vibration-damping fastener and a sleeper located below the vibration-damping pad of the vibration-damping fastener, as well as a supporting member and a fixing member for relatively fixing the vibration-damping pad of the vibration-damping fastener and the vibration-damping fastener.

[0014] The beneficial effects of the utility model are as follows: a vibration-damping pad of a vibration-damping fastener is provided, which is used for the vibration-damping fastener, wherein the vibration-damping pad of the vibration-damping fastener includes a plate body, a first vibration-damping part is provided on both sides of the plate body in the width direction, two first vibration-damping parts are arranged at the most compressed part of the plate body, the two first vibration-damping parts are arranged at an angle, the highest points of the two first vibration-damping parts are close to the central axis of the plate body, and the cross-sections of the two first vibration-damping parts are both T-shaped. When the vibration-damping pad is compressed, the first vibration-damping part is compressed first on the vibration-damping pad installed in the middle of the vibration-damping fastener, and the force on the part of the plate body that was originally most compressed is reduced, so that the force on the vibration-damping pad is more uniform, and the force-bearing surface structure of the vibration-damping pad is adapted to the force received, which effectively increases the lateral vibration-damping effect of the vibration-damping pad, increases the compression resistance of the vibration-damping pad, and thus can improve the service life of the vibration-damping pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] In the figure: Figure 1 The overall structure diagram of a vibration-damping pad of a vibration-damping fastener provided by the utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the vibration-damping pad of the vibration-damping fastener shown;

[0018] Figure 3 It is a cross-sectional view of a vibration-damping fastener provided in the utility model.

[0019] Explanation of the reference numerals in the accompanying drawings: 100, vibration-damping pad of vibration-damping fastener; 10, plate body; 11, first vibration-damping part; 111, pressure-dividing protrusion; 1111, conical pressure-bearing surface; 12, vibration-damping protrusion; 13, pressure-relieving hole; 14, sound-absorbing hole; 20, sound-absorbing cotton; 200, vibration-damping fastener; 201, rail; 202, sleeper; 203, supporting member; 204, fixing member. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is now described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the utility model in a schematic manner, so it only shows the structure related to the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Please refer to Figure 1-3 The vibration-damping pad 100 of the vibration-damping fastener is used for the vibration-damping fastener 200, and the vibration-damping pad 100 of the vibration-damping fastener is installed in the middle of the vibration-damping fastener 200. The vibration-damping pad 100 of the vibration-damping fastener includes a plate body 10, and a first vibration-damping part 11 is provided on both sides of the plate body 10 in the width direction, and the two first vibration-damping parts 11 are both arranged at the maximum pressure point on the plate body 10. Specifically, the two first vibration-damping parts 11 are arranged obliquely, and the highest points of the two first vibration-damping parts 11 are close to the central axis of the plate body 10, and the cross-sections of the two first vibration-damping parts 11 are both T-shaped. The plate body 10 has an inclined structure with the same inclination angle as the first vibration-damping part 11.

[0022] A vibration-damping protrusion 12 is further provided on the plate body 10 . The vibration-damping protrusion 12 is a circular protrusion. The height of the vibration-damping protrusion 12 is lower than the height of the first vibration-damping portion 11 .

[0023] A plurality of pressure-dividing protrusions 111 are provided on the first vibration-damping part 11. The pressure-dividing protrusions 111 are provided with conical pressure-bearing surfaces 1111. Specifically, in this embodiment, the density of the pressure-dividing protrusions 111 is greater than the density of the vibration-damping protrusions 12, and the density ratio of the pressure-dividing protrusions 111 and the vibration-damping protrusions 12 is adjusted according to the actual installation state and usage of the vibration-damping fastener and the vibration-damping pad, and the plate body 10, the first vibration-damping part 11, the vibration-damping protrusions 12 and the distribution protrusions 111 are all made of rubber material with a certain elasticity.

[0024] The plate body 10 is also provided with a pressure relief hole 13. The pressure relief hole 13 is arranged in the middle of the plate body 10. The arrangement of the pressure relief hole 13 facilitates further sharing of the pressure received by the plate body 10, so that the plate body 10 is not easily damaged due to excessive pressure.

[0025] The vibration-damping pad 100 of the vibration-damping fastener also includes a plurality of sound-absorbing cottons 20, and the plate body 10 is provided with a sound-absorbing hole 14 for placing the sound-absorbing cottons 20. Specifically, in the present embodiment, the sound-absorbing cotton is made of polyester fiber. When the rail vehicle passes through the vibration-damping fastener and the vibration-damping pad used in conjunction, the plate body 10, the first vibration-damping portion 11, and the vibration-damping protrusion 12 are compressed to generate vibration noise, and the vibration noise is absorbed by a plurality of groups of microporous sound-absorbing holes 14. Furthermore, the air in the sound-absorbing hole 14 in the present embodiment forms an air column. When the frequency of the external incident wave is the same as the natural frequency of the system, the air column in the hole neck vibrates violently due to resonance. During this vibration process, sound energy is consumed due to overcoming friction resistance, thereby achieving a sound-absorbing effect. At the same time, a plurality of sound-absorbing cottons 20 are also arranged in the sound-absorbing hole 14 in the utility model, which can further improve the sound-absorbing and noise-reducing effect.

[0026] The utility model also includes a vibration-damping fastener 200 equipped with a vibration-damping pad 100 of the above vibration-damping fastener, the vibration-damping fastener 200 includes a rail 201, a sleeper 202, and a supporting member 203 and a fixing member 204 for supporting the rail 201 on the sleeper 202, the vibration-damping pad 100 of the vibration-damping fastener is placed between the rail 201 and the sleeper 202, and the vibration-damping pad 100 of the vibration-damping fastener is symmetrically arranged about the central axis of the vibration-damping fastener 200. When assembling the vibration-damping fastener 200 and the vibration-damping pad 100 of the vibration-damping fastener, place the vibration-damping pad 100 of the vibration-damping fastener between the rail 201 and the sleeper 202, and then use the supporting piece 203 and the fixing piece 204 to cooperate with each other to fix the rail 201 and the vibration-damping pad 100 of the vibration-damping fastener on the sleeper 202, so that when the rail vehicle is running, the vibration-damping pad 100 of the vibration-damping fastener and the vibration-damping fastener 200 remain in a relatively fixed state.

[0027] When a rail vehicle passes through the vibration-damping fastener 200 and the vibration-damping pad 100 of the vibration-damping fastener, the first side of the vibration-damping fastener 200 that is pressed is the side of the vibration-damping fastener 200 that is biased toward the rail vehicle, that is, the force-bearing surface on the rail 201 above the vibration-damping pad 100 of the vibration-damping fastener is the side of the rail 201 that is biased toward the rail vehicle. The pressure on the vibration-damping pad 100 of the vibration-damping fastener is also on the side of the vibration-damping pad 100 of the vibration-damping fastener that is biased toward the rail vehicle. Since the height of the first vibration damping part 11 is higher than the height of the vibration damping protrusion 12 and the plate body 10, the first vibration damping part 11 is first subjected to pressure, and the pressure received by the several pressure-dividing protrusions 111 on the first vibration damping part 11 is shared by each other. Then the vibration damping protrusion 12 is subjected to pressure, but the pressure received by the vibration damping protrusion 12 is less than that of the first vibration damping part 11, and the distribution density of the vibration damping protrusion 12 is less than the distribution density of the distribution protrusions on the first vibration damping part 11. Finally, the plate body 10 is subjected to pressure, and the pressure received by the plate body 10 has been greatly reduced. In the utility model, the first vibration damping part 11 is first subjected to pressure, and the vibration damping protrusion 12 and the plate body 10 are pressure-divided in turn, and the pressure is divided in multiple layers. According to the actual installation state of the vibration damping pad in actual application, the relative density ratio of the pressure-dividing protrusion 111 on the first vibration damping part 11 and the vibration damping protrusion 12 is adjusted, so that the state of the force-bearing surface of the vibration damping pad is more compatible with the actual force state, which can effectively increase the lateral vibration damping effect of the device.

[0028] Beneficial effect: When the vibration damping pad is under pressure, the first vibration damping part 11 on the vibration damping pad 100 installed in the middle of the vibration damping fastener 200 is under pressure, and the force on the part of the plate body 10 that was originally under the greatest pressure is reduced, so that the force on the vibration damping pad is more uniform, and the force surface structure of the vibration damping pad is adapted to the force received, effectively increasing the lateral vibration damping effect of the vibration damping pad, thereby increasing the compression resistance of the vibration damping pad, and thereby increasing the service life of the vibration damping pad.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The above is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without departing from the scope of the utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A vibration-damping pad for a vibration-damping fastener, used for the vibration-damping fastener (200), wherein the vibration-damping pad (100) for the vibration-damping fastener is installed in the middle of the vibration-damping fastener (200), characterized in that: The vibration-damping pad (100) comprises a plate body (10), wherein a first vibration-damping portion (11) is provided on both sides of the plate body (10) in a width direction, wherein the two first vibration-damping portions (11) are arranged at the maximum pressure-bearing position on the plate body (10), the two first vibration-damping portions (11) are arranged in an inclined manner, the highest points of the two first vibration-damping portions (11) are close to the central axis of the plate body (10), and the cross-sections of the two first vibration-damping portions (11) are both T-shaped.

2. The vibration-damping pad of the vibration-damping fastener according to claim 1, characterized in that: A plurality of pressure dividing protrusions (111) are provided on the first vibration reduction portion (11).

3. The vibration-damping pad of the vibration-damping fastener according to claim 2, characterized in that: The pressure dividing protrusion (111) is provided with a conical pressure receiving surface (1111).

4. The vibration-damping pad of the vibration-damping fastener according to claim 1, characterized in that: The plate body (10) is also provided with a vibration-damping protrusion (12), and the vibration-damping protrusion (12) is a circular protrusion.

5. The vibration-damping pad of the vibration-damping fastener according to claim 4, characterized in that: The height of the vibration-damping protrusion (12) is lower than the height of the first vibration-damping portion (11).

6. The vibration-damping pad of the vibration-damping fastener according to claim 1, characterized in that: The plate body (10) is also provided with a pressure relief hole (13).

7. The vibration-damping pad of the vibration-damping fastener according to claim 6, characterized in that: The pressure relief hole (13) is arranged in the middle of the plate body (10).

8. The vibration-damping pad of the vibration-damping fastener according to claim 1, characterized in that: The vibration-damping pad (100) of the vibration-damping fastener further comprises a plurality of sound-absorbing cottons (20), and the plate body (10) is provided with sound-absorbing holes (14) for placing the sound-absorbing cottons (20).

9. A vibration-damping fastener, characterized in that: The vibration-damping fastener (200) includes the vibration-damping pad (100) of the vibration-damping fastener described in any one of claims 1 to 8, and the vibration-damping fastener (200) also includes a rail (201) arranged above the vibration-damping pad (100) of the vibration-damping fastener and a sleeper (202) located below the vibration-damping pad (100) of the vibration-damping fastener, as well as an abutment (203) and a fixing member (204) for relatively fixing the vibration-damping pad (100) of the vibration-damping fastener and the vibration-damping fastener (200).

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