Frequency-adjustable damping suppression corrugation device

Abstract

The utility model discloses a frequency-adjustable damping suppression corrugation device which comprises a pair of vibration absorption blocks arranged on the two sides of a rail waist and a clamp for clamping the vibration absorption blocks to be tightly attached to the rail waist, and the clamp comprises a connecting plate arranged on a rail bottom and blocking shoulders arranged at the two ends of the connecting plate and arranged on the two sides of the rail waist. A wedge block and a pre-tightening bolt capable of driving the wedge block to wedge tightly are arranged between at least one retaining shoulder and the vibration absorption block corresponding to the retaining shoulder, and at least one retaining shoulder in the pair of retaining shoulders can be detached, so that the connecting plate can penetrate through a smaller rail bottom space to carry out clamp arrangement and installation. And the wedge block can be wedged through the pre-tightening bolt, so that the vibration absorption block is more tightly attached to the steel rail, the vibration absorption effect is improved, and the corrugation of the steel rail is further inhibited.

Description

Technical Field

[0001] The utility model relates to the field of rail transportation, in particular to a rail corrugation suppression device. Background Art

[0002] Rail corrugated wear refers to the wear phenomenon of the longitudinal regular ups and downs on the top surface of the rail. The causes are relatively complex. It is related to the material and manufacturing process of the rail, the structure and axle weight of the locomotive and vehicle, the wheel-rail contact vibration, the plastic flow and surface fatigue of the rail top metal, and the adhesion and slip effect of the small radius curve. On the other hand, it is also related to the vibration of the rail during driving. The solution is to use a rail vibration absorber made of damping material to cover the rail for vibration absorption. The rail vibration absorber is made of damping material and covered on the waist of the rail. The vibration of the rail is absorbed by the vibration absorbing block, thereby reducing the vibration of the rail, thereby suppressing the noise and the corrugation of the rail. In order to make the vibration absorber have a better vibration absorbing effect, in addition to improving the material and structure of the vibration absorber itself, making the vibration absorber and the rail fit closely together can also achieve a better vibration absorbing effect. The traditional method is to fix the vibration absorber on both sides of the rail with elastic bars, and the elastic force of the elastic bars drives the vibration absorbing block close to the rail. However, the clamping force of this method will decrease over time, resulting in a decrease in the vibration absorbing effect.

[0003] In order to adjust the clamping force, the rail vibration reduction fastener disclosed in the Chinese utility model patent publication number CN 212983484 U drives the front side plate to squeeze the elastic body through the positioning adjustment block and the shoulder, so that the elastic body is close to the rail.

[0004] However, the above scheme is only applicable to the fastener position, and the base plate needs to be arranged on the sleeper in advance, and then the rail is placed on the fastener to install the vibration-absorbing block. It is difficult to use this structure to install the vibration-absorbing block between two sleepers, especially when the track is laid. Due to the small space at the bottom of the rail and the large height of the shoulder, the base plate cannot be arranged at the bottom of the rail to place the two shoulders on both sides of the rail. Utility Model Content

[0005] In order to solve the problem that it is inconvenient to install the fixture in the laid track due to the small space at the bottom of the track, and to provide a corrugation suppression device capable of adjusting the holding force of the vibration absorbing block, the technical solution adopted by the utility model is:

[0006] The adjustable frequency damping and corrugation suppression device comprises a pair of vibration absorbing blocks arranged on both sides of the rail waist and a clamp for clamping the pair of vibration absorbing blocks tightly against the rail waist.

[0007] The clamp comprises a connecting plate placed at the bottom of the rail;

[0008] A pair of shoulders arranged at both ends of the connecting plate, at least one of which is detachable and assembled with the connecting plate and placed on both sides of the rail;

[0009] At least one wedge block is placed between the shoulder and the vibration absorbing block on the side corresponding to the shoulder;

[0010] The wedge block can drive the wedge block to wedge into the gap between the shoulder and the vibration absorbing block to tighten the pre-tightening bolt.

[0011] Furthermore, an inclined surface cooperating with the wedge block is arranged on the shoulder and / or the vibration absorbing block on one side where the wedge block is arranged.

[0012] Furthermore, a wedge block is arranged between the shoulder and the vibration absorbing block on one side of the rail, and the shoulder on the other side of the rail is in contact with and cooperates with the vibration absorbing block.

[0013] Furthermore, a wedge block is arranged between the shoulder and the vibration absorbing block on one side of the rail, and an insert block 2-4 for filling the gap between the shoulder and the vibration absorbing block is arranged between the shoulder and the vibration absorbing block on the other side of the rail.

[0014] Furthermore, wedges are provided on both sides of the rail. Furthermore, the pre-tightening bolts are connected to the shoulder or the connecting plate.

[0015] Furthermore, the shoulder on one side of the wedge block is provided with a semi-enclosed structure to limit the wedge block. Furthermore, the shoulder is provided with a semi-enclosed structure to limit the wedge block and the insert block.

[0016] The vibration absorbing block is provided with a resonance block, and the resonance block is covered with an

[0017] Ni layer.

[0018] By adopting this technical solution, since the shoulder guard and the connecting plate can be disassembled by assembly, when the space at the bottom of the rail is small, the shoulder guard can be removed to pass the connecting plate through the narrow space at the bottom of the rail and then the shoulder guard can be installed. Moreover, since the wedge block can be wedged by the pre-tightening bolt, the clamping force of the wedge block on the vibration absorbing block can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the use status of the corrugation suppression device;

[0020] Figure 2 This is a schematic diagram of the fixture assembly structure;

[0021] Figure 3 This is an exploded schematic diagram of the detachable structure of the single-side shoulder of the fixture;

[0022] Figure 4 This is an exploded schematic diagram of the structure in which the shoulders on both sides of the fixture can be removed;

[0023] Figure 5 Schematic diagram of a structure in which a wedge block is arranged on one side of a device for suppressing corrugation and an insert block is arranged on the other side;

[0024] Figure 6 Schematic diagram of the wedge structure for suppressing corrugation on one side of the device;

[0025] Figure 7 It is a schematic diagram of the cooperation state 1 of the wedge block, the shoulder block and the vibration absorbing block;

[0026] Figure 8 It is a schematic diagram of the cooperation state 2 of the wedge block, the shoulder block and the vibration absorbing block;

[0027] Fig. 9 It is a schematic diagram of the cooperation state 3 of the wedge block, the shoulder block and the vibration absorbing block;

[0028] Fig.10 This is a schematic structural diagram of shoulder guard embodiment 1;

[0029] Fig.11 This is a schematic structural diagram of shoulder guard embodiment 2;

[0030] Fig.12 It is a schematic diagram of the assembly method 1 of the detachable shoulder and the connecting plate;

[0031] Fig.13 It is a schematic diagram of the assembly method 2 of the detachable shoulder and the connecting plate;

[0032] Fig.14 It is a schematic diagram of the assembly method 3 of the detachable shoulder and the connecting plate;

[0033] Fig.15 It is a schematic diagram of the assembly method 4 of the detachable shoulder and connecting plate. DETAILED DESCRIPTION

[0034] The technical solution of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 The illustrated wave grinding suppression device comprises a pair of vibration absorbing blocks 1, which are placed on both sides of the rail and fit closely to the rail waist to absorb the vibration of the rail caused by running, thereby reducing noise pollution. In order to enable the pair of vibration absorbing blocks 1 to fit closely to the rail to achieve better vibration absorption and noise reduction effects and further suppress rail wave grinding, the wave grinding suppression device is also equipped with a clamp 2 that can tighten and fix the pair of vibration absorbing blocks 1 so that the vibration absorbing blocks 1 fit closely to the rail waist.

[0036] like Figure 2The above-mentioned clamp shown includes a connecting plate 2-1 and shoulders 2-2 arranged at both ends of the connecting plate 2-1. During installation, the connecting plate 2-1 is placed at the bottom of the rail, and the shoulders 2-2 are placed on both sides of the rail. Since the corrugation suppression device is generally installed after the rail is laid or on the existing laid rails, and the space between the bottom of the rail and the foundation is small, if the shoulders 2-2 are fixedly connected to the connecting plate 2-1, when the connecting plate 2-1 passes through the bottom of the rail, it is necessary to reserve or excavate enough space at the bottom of the rail to allow the shoulders 2-2 to pass through.

[0037] Therefore, in order to pass the connecting plate 2-1 through the rail bottom in a sufficiently small rail bottom space, Figure 3 In the illustrated embodiment, one of the shoulders 2-2 of the clamp is assembled with the connecting plate 2-1 so that the shoulder 2-2 can be removed from the connecting plate 2-1. When the connecting plate 2-1 is arranged at the bottom of the rail, the detachable shoulder 2-2 is removed, and the overall height of the connecting plate 2-1 is lowered. The end of the removed shoulder 2-2 of the connecting plate 2-1 is passed through the bottom of the rail, which can ensure that the connecting plate 2-1 can be arranged under the bottom of the rail when the space at the bottom of the rail is small, and then the shoulder 2-2 can be assembled and installed on the connecting plate 2-1.

[0038] Of course, you can also Figure 4 As shown, the two shoulders 2-2 are combined with the connecting plate 2-1 by assembly. When the connecting plate 2-1 is arranged at the bottom of the rail, one of the shoulders 2-2 can be selectively removed, or the connecting plate 2-1 is arranged at the bottom of the rail with both shoulders 2-2 removed, and then the shoulders 2-2 are assembled onto the connecting plate 2-1 so that the shoulders are set on both sides of the rail.

[0039] Based on the above two embodiments, in order to clamp the vibration absorbing block 1 and adjust the clamping force, Figure 5 As shown, a wedge block 2-3 is arranged between the shoulder 2-2 and the vibration absorbing block 1, and the wedge block 2-3 is connected to the connecting plate 2-1 or the shoulder 2-2 through a pre-tightening bolt 2-5. Specifically, the pre-tightening bolt 2-5 passes through the through hole of the wedge block 2-3 and is connected to the bottom of the connecting plate 2-1 or the shoulder 2-2. The small-diameter end of the wedge block 2-3 is placed at the bottom and leaves a certain distance from the top surface of the connecting plate 2-1. When the pre-tightening bolt 2-5 is screwed, the wedge block 2-3 can be driven to move toward the connecting plate 2-1, and then the large-diameter end of the wedge block 2-3 is continuously fed between the shoulder 2-2 and the vibration absorbing block 1 to drive the wedge block 2-3 to wedge the vibration absorbing block 1, so that the vibration absorbing block 1 fits tightly to the rail waist.

[0040] Since the other side of the wedge block 2-3 can also move the shoulder 2-2 toward the rail under the lateral force of the connecting plate 2-1 during the wedging process, the following method can be used: Figure 7The embodiment shown only needs to set one wedge block 2-3 for wedging, and an insert block 2-4 can be set in the shoulder block on the side where the wedge block 2-3 is not set to fill the gap between the shoulder block 2-2 and the vibration absorbing block 1. When the wedge block 2-3 on one side is wedged, the connecting plate 2-1 pulls the shoulder block 2-2 on the other side to drive the insert block 2-4 close to the vibration absorbing block 1, and can also squeeze the vibration absorbing block 1 on the other side to make it fit the rail waist. The insert block 2-4 can also be fixed to the shoulder block 2-2 by a pre-tightening bolt 2-5.

[0041] The purpose of the above structure to set the insert block 2-4 is to fill the gap, so that when the wedge block 2-3 has a small downward movement distance, the insert block 2-4 can quickly squeeze the vibration absorbing block 1. Of course, it is also possible to use Figure 6 As shown, the thickness of the shoulder 2-2 is increased so that the inner side of the shoulder 2-2 contacts the vibration absorbing block 1 or the gap between the two is reduced, thereby replacing the solution of arranging the insert block 2-4 therebetween.

[0042] Of course Figure 5 As shown, it is a more preferred solution to set wedge blocks 2-3 between the shoulder blocks 2-2 and the vibration absorbing blocks 1 on both sides. The wedge blocks 2-3 on both sides can be used to adjust the wedging at the same time, thereby keeping the rail centered relative to the connecting plate and the shoulder block.

[0043] On the basis of the above structure, in order to enable the wedge block 2-3 to fully exert its wedging function during the wedging process, an inclined surface matching the wedge block 2-3 can be selectively set on the vibration absorbing block 1 and / or the shoulder 2-2. The scheme of setting the inclined surface at different positions is further described in detail below.

[0044] like Fig. 9 As shown, only the inclined surface 2a is set on the shoulder 2-2, and the vibration absorbing block 1 is in plane contact with the wedge block 2-3. In this case, the through hole on the wedge block 2-3 for the pre-tightening bolt 2-5 to pass through is a waist-shaped hole. Since the wedge block 2-3 is subjected to the lateral force of the inclined surface on the shoulder 2-2 during the downward movement, it will move toward the side of the vibration absorbing block 1. Therefore, the waist-shaped hole can provide displacement space for the wedge block 2-3 to move horizontally. The plane contact between the wedge block 2-3 and the vibration absorbing block 1 is to increase the contact area, make the extrusion force more uniform, and improve the tightness of the vibration absorbing block 1 and the rail waist. Of course, the wedge block 2-3 can also be inclined on both sides, and the surface of the vibration absorbing block 1 and the wedge block 2-3 is a plane. This will only result in a smaller contact area between the wedge block 2-3 and the vibration absorbing block 1, and a poor clamping effect.

[0045] Therefore, when both sides of the wedge block 2-3 are inclined surfaces, the following can be used: Fig.10As shown, inclined surfaces 2a are provided on the shoulder 2-2 and the vibration absorbing block 1, and inclined surfaces 2a are provided at the contact parts of the wedge block 2-3, the vibration absorbing block 1 and the shoulder 2-2. Under this structure, the wedging process of the wedge block is relatively smooth, but the ratio between the downward movement of the wedge block 2-3 and the wedging pressure is small, and a larger moving distance is required to meet the wedging.

[0046] like Figure 8 As shown, only the inclined surface 2a cooperating with the wedge block 2-3 is provided on the vibration absorbing block 1, and the wedge block 2-3 and the shoulder 2-2 are matched with each other in a plane. This is a more preferred structure. On the one hand, it is more convenient to process the shoulder 2-2, and it is more convenient to set the inclined surface 2a on the vibration absorbing block 1, and the through groove 2-6 on the wedge block 2-3 does not need to be set as a waist-shaped hole. At the same time, since the wedge block 2-3 cooperates with the inclined surface 2a of the vibration absorbing block 1, the inclined surface 2a on the vibration absorbing block 1 can limit the wedge block to avoid the risk of the entire clamp falling.

[0047] In the above three forms of cooperation between the wedge block 2-3, the shoulder 2-2 and the vibration absorbing block 1, if the other side of the rail uses the insert block 2-4 or directly contacts and cooperates with the vibration absorbing block 1 through the shoulder 2-2, the contact part between the wedge block 2-3 or the shoulder 2-2 and the vibration absorbing block 1 can adopt a flat surface contact. In order to prevent the clamp from falling due to the falling force, the flat surface can be matched with a relatively rough tooth surface, or the same as the wedge block, an inclined surface contact can be used to prevent the clamp from falling.

[0048] When the shoulder 2-2 is provided with a wedge block 2-3 or an insert block 2-4, the force bearing part is mainly concentrated on the surface of the shoulder 2-2 opposite to the rail, so the shoulder 2-2 can be simply set as follows: Fig.11 The planar structure shown is, of course, to form a better limit constraint for the wedge block 2-3 or the insert block 2-4, such as Fig.12 As shown, it is more preferable to set the shoulder 2-2 to have a semi-enclosed cross-section with a U-shaped or V-shaped structure.

[0049] When the shoulder 2-2 needs to be installed on the connecting plate 2-1 by assembly, the following method can be used: Fig.13 As shown, a through slot 2-6 is provided on the connecting plate 2-1, and a retaining ring 2-7 is provided at the bottom of the shoulder 2-2. When installing the shoulder 2-2, the shoulder 2-2 is installed through the through slot 2-6 from the bottom of the connecting plate 2-1.

[0050] Of course, the above-mentioned assembly method has the disadvantage that there must be enough space for the shoulder 2-2 to be installed into the through groove 2-6 from the bottom of the connecting plate 2-1. Fig.14In the assembly method shown, two flanges 2-8 are arranged at the bottom of the shoulder, the length of the through slot 2-6 is greater than the distance between the edges of the two flanges 2-8, and the width of the through slot 2-6 is less than the distance between the edges of the two flanges 2-8. The two flanges 2-8 of the shoulder 2-2 are inserted from the top of the connecting plate 2-1 along the length direction of the through slot 2-6 and then rotated 90° to complete the clamping. Alternatively, the following method can be used: Fig.15 In the assembly method shown, flanges 2-9 are set on both sides of the bottom of the shoulder 2-2, and limiting grooves 2-10 are set on the connecting plate 2-1. When installing the shoulder 2-2, the flanges 2-9 are inserted into the limiting grooves 2-10 for installation. In this case, there is no need to set a through groove on the connecting plate 2-1, so the pre-tightening bolts 2-5 can be directly connected to the connecting plate 2-1.

[0051] like Figure 5 The vibration absorbing block 1 used in the above-mentioned scheme is mainly made of damping material. In order to further improve the vibration absorbing effect, a resonance block 1-1 is also arranged in the vibration absorbing block 1. The resonance block 1-1 is coated with a damping layer made of a material different from that of the vibration absorbing block 1 to improve the resonance effect, thereby achieving a better vibration absorbing effect and effectively suppressing rail corrugation.

Claims

1. A frequency-adjustable damping device for suppressing corrugation, comprising a pair of vibration-absorbing blocks (1) disposed on both sides of a rail waist and a clamp (2) for clamping the pair of vibration-absorbing blocks (1) against the rail waist, characterized in that: The clamp (2) comprises: A connecting plate (2-1) placed at the bottom of the rail; A pair of shoulders (2-2) arranged at both ends of the connection plate (2-1), at least one of which is detachable and assembled with the connection plate (2-1) and placed on both sides of the rail; At least one wedge block (2-3) disposed between the stop shoulder (2-2) and a vibration absorbing block (1) on a side corresponding to the stop shoulder (2-2); A pre-tightening bolt (2-5) is used for installing the wedge block (2-3) and can drive the wedge block (2-3) to be wedged into the gap between the shoulder (2-2) and the vibration absorbing block (1).

2. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: An inclined surface (2a) cooperating with the wedge block is arranged on the shoulder (2-2) and / or the vibration absorbing block (1) on one side where the wedge block (2-3) is arranged.

3. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: A wedge block (2-3) is arranged between the shoulder (2-2) and the vibration absorbing block (1) on one side of the rail, and the shoulder (2-2) on the other side of the rail is in contact with and fits with the vibration absorbing block (1).

4. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: A wedge block (2-3) is arranged between the shoulder (2-2) and the vibration absorbing block (1) on one side of the rail, and an insert block (2-4) is arranged between the shoulder (2-2) and the vibration absorbing block (1) on the other side of the rail to fill the gap between the shoulder (2-2) and the vibration absorbing block (1).

5. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: Wedge blocks (2-3) are arranged on both sides of the rail.

6. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: The pre-tightening bolt (2-5) is connected to the shoulder (2-2) or the connecting plate (2-1).

7. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: The shoulder (2-2) on which the wedge block (2-3) is installed is in a semi-enclosed structure to limit the wedge block (2-3).

8. The adjustable frequency damping corrugation suppression device according to claim 4, characterized in that: The shoulder (2-2) is in a semi-enclosed structure to limit the wedge block (2-3) and the insert block (2-4).

9. The adjustable frequency damping corrugation suppression device according to claim 1, characterized in that: A resonance block (1-1) is arranged inside the vibration absorbing block (1), and a damping layer (1-2) is coated on the resonance block (1-1).

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