Railway track pad with easy replacement

Abstract

The utility model discloses an easily replaceable shock pad for rail, including gasket main part, one support assembly is equipped with in gasket main part both sides, the support assembly includes the support frame sliding connection in gasket main part one side, two clamping strips are fixedly connected with in support frame one side outer wall, the utility model discloses a support assembly can support up the edge of gasket main part to make the replacement process of gasket convenient and fast, and the operation of supporting and flattening is also convenient enough, and it is favorable to improve the replacement efficiency, and the support frame is aligned with gasket main part end, then two clamping strips of support frame side edge are inserted into two insertion slots respectively, along with the complete insertion of clamping strip insertion slot, and the side edge position of support frame will just wrap up gasket main part, under the cooperation of clamping strip and insertion slot, the position of support frame will be limited, at this moment, gasket main part can keep the fixed state under the stable support of support frame.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction technology in rail transit, specifically to a vibration damping pad for railway tracks that is easy to replace. Background Technology

[0002] Rail vibration damping pads are key components in railway infrastructure. They are mainly used to isolate the vibration transmission between the track and the foundation structure, such as the ballast bed, bridge piers, and tunnel walls, thereby improving the smoothness, safety, and passenger comfort of train operation, while reducing vibration and noise pollution to the surrounding environment.

[0003] A search revealed a utility model patent with Chinese patent publication number CN223103382U, which discloses a vibration damping device for subway track laying and its vibration damping rubber pad, relating to the field of track vibration damping. This subway track laying vibration damping device and its vibration damping rubber pad include a vibration damping rubber assembly, which includes a composite rubber component. The composite rubber component includes a composite rubber plate, a rubber base frame, and a conical rubber block. The composite rubber plate is fixedly connected to the top of the conical rubber block, and the rubber base frame is fixedly connected to the bottom of the conical rubber block.

[0004] When replacing the shock-absorbing pads, the cabinet is raised using lifting tools, the old shock-absorbing pads are removed, and then the new ones are inserted. Currently, the track shims are usually controlled at 3-15 mm, and the rubber material is relatively soft, which makes the replacement operation inconvenient. The new shims are also prone to unevenness, affecting the performance. There is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide an easily replaceable shock-absorbing pad for railway tracks to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an easily replaceable shock-absorbing pad for railway tracks, comprising a pad body, with a support assembly on each side of the pad body, the support assembly including a support frame slidably connected to one side of the pad body, two snap-fit ​​strips fixedly connected to the outer wall of one side of the support frame, the two snap-fit ​​strips being symmetrically arranged, a slot being provided on the top and bottom outer walls of the pad body, the two snap-fit ​​strips being slidably connected to the two slots respectively, and a limit structure being fixedly connected to the support frame.

[0007] The support frame can support the edge of the gasket body, making gasket replacement convenient and quick. The flattening operation is also easy, improving replacement efficiency. Align the support frame with the end of the gasket body, then insert the two locking strips on the side of the support frame into the two slots. As the locking strips are fully inserted, the support frame will precisely wrap around the side of the gasket body. With the cooperation of the locking strips and slots, the position of the support frame is restricted. At this point, the gasket body remains fixed under the stable support of the support frame, preventing it from moving or deforming. During the process of inserting the gasket body under the rail, the stable support and positioning provided by the support frame allow the operator to more easily push the gasket body to the designated position. As a further preferred embodiment of this technical solution, the limiting structure includes a baffle fixedly connected to the outer wall of one end of the support frame.

[0008] As a further preferred embodiment of this technical solution, the edge of the snap-fit ​​strip is provided with an arc-shaped angle.

[0009] As a further preferred embodiment of this technical solution, the support component is made entirely of 7075 aluminum alloy.

[0010] As a further preferred embodiment of this technical solution, the gasket body includes an absorption layer one, an absorption layer two, a support layer and a protective layer. The absorption layer two is located between the absorption layer one and the support layer, and the protective layer is located outside the absorption layer one, the absorption layer two and the support layer. The materials of each layer of the gasket body are fixedly connected to each other by adhesive.

[0011] As a further preferred embodiment of this technical solution, the first absorbent layer is made of microporous foamed polyurethane material, the second absorbent layer is made of ACF artificial cartilage material, the support layer is made of TPEE thermoplastic elastomer material, and the protective layer is made of graphene-reinforced rubber material.

[0012] The topmost absorption layer of the pad body is made of microporous foamed polyurethane material, which can absorb high-frequency vibration, reduce wheel-rail contact noise, provide initial buffering, and disperse local pressure on the rail. The middle absorption layer is made of ACF artificial cartilage material, which can absorb the impact energy of train operation, reduce the transmission of vibration to the sleeper, has strong fatigue resistance, and ensures long-term stability. The bottom support layer is made of TPEE thermoplastic elastomer material, which can provide elastic support, disperse sleeper pressure, reduce track bed stress concentration, and prevent sleeper settlement.

[0013] As a further preferred embodiment of this technical solution, the adhesive is a nano-silica modified adhesive.

[0014] This utility model provides an easily replaceable shock-absorbing pad for railway tracks, which has the following beneficial effects: (1) By setting up a support component, this utility model can support the edge of the gasket body, making the gasket replacement process convenient and quick. The flattening operation is also convenient and conducive to improving the replacement efficiency. Align the support frame with the end of the gasket body, and then insert the two snap-fit ​​strips on the side of the support frame into the two slots respectively. As the snap-fit ​​strips are fully inserted into the slots, the support frame will just wrap around the side of the gasket body. With the cooperation of the snap-fit ​​strips and the slots, the position of the support frame will be restricted. At this time, the gasket body can maintain a fixed state under the stable support of the support frame and will not move or deform at will. During the process of inserting the gasket body under the rail, since the support frame provides stable support and positioning, the operator can push the gasket body to the designated position more easily.

[0015] (2) This utility model sets up a gasket body. The topmost absorption layer of the gasket body is made of microporous foamed polyurethane material, which can absorb high-frequency vibration, reduce wheel-rail contact noise, provide initial buffer, and disperse local pressure on the rail. The middle absorption layer is made of ACF artificial cartilage material, which can absorb the impact energy of the train during operation, reduce the transmission of vibration to the sleeper, and has strong fatigue resistance to ensure long-term stability. The bottommost support layer is made of TPEE thermoplastic elastomer material, which can provide elastic support, disperse sleeper pressure, reduce track bed stress concentration, and prevent sleeper settlement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is an enlarged structural diagram of the gasket body of this utility model; Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; In the diagram: 1. Gasket body; 2. Support assembly; 101. Absorption layer one; 102. Absorption layer two; 103. Support layer; 104. Protective layer; 201. Support frame; 202. Snap-fit ​​strip; 203. Slot; 204. Curved corner; 205. Baffle. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] This utility model provides a technical solution: such as Figure 2 , Figure 3As shown in Figure 4, in this embodiment, an easily replaceable rail shock absorber includes a pad body 1. A support assembly 2 is provided on both sides of the pad body 1. The support assembly 2 includes a support frame 201 slidably connected to one side of the pad body 1. Two snap-fit ​​strips 202 are fixedly connected to the outer wall of one side of the support frame 201. The two snap-fit ​​strips 202 are symmetrically arranged. A slot 203 is provided on the top and bottom outer walls of the pad body 1. The two snap-fit ​​strips 202 are slidably connected inside the two slots 203. A limiting structure is fixedly connected to the support frame 201. The snap-fit ​​strips 202 have a semi-circular cross-section, allowing the pad body 1 to be removed directly by pulling after installation without damaging the pad body 1.

[0019] The limiting structure includes a baffle 205 fixedly connected to the outer wall of one end of the support frame 201. When the gasket body 1 contacts the baffle 205, its edge will be completely wrapped, and there is no need to reduce the fitting speed when approaching the edge.

[0020] The edge of the snap-fit ​​strip 202 has an arc-shaped corner 204, which makes it easier to insert the snap-fit ​​strip 202 into the slot 203, and the operation can be completed without precise alignment.

[0021] The support component 2 is made of 7075 aluminum alloy, which is lightweight, structurally stable, and not easily deformed. It can be reused after installation.

[0022] Align the support frame 201 with the end of the pad body 1, and then insert the two snap-fit ​​strips 202 on the side of the support frame 201 into the two slots 203 respectively. As the snap-fit ​​strips 202 are fully inserted into the slots 203, the support frame 201 will just cover the side of the pad body 1. With the cooperation of the snap-fit ​​strips 202 and the slots 203, the position of the support frame 201 will be restricted. At this time, the pad body 1 can maintain a fixed state under the stable support of the support frame 201, and will not move or deform at will. During the process of inserting the pad body 1 under the rail, because the support frame 201 provides stable support and positioning, the operator can push the pad body 1 to the designated position more easily. Moreover, when it is found that the surface of the pad body 1 is uneven during the insertion process, the operator only needs to gently pull the support frame 201. Through the pulling and adjustment of the side of the pad body 1 by the support frame 201, the pad body 1 can be quickly and effectively restored to a flat state.

[0023] like Figure 1 and Figure 3As shown, the gasket body 1 includes an absorption layer 101, an absorption layer 102, a support layer 103, and a protective layer 104. The absorption layer 102 is located between the absorption layer 101 and the support layer 103, and the protective layer 104 is located outside the absorption layer 101, the absorption layer 102, and the support layer 103. The materials of each layer of the gasket body 1 are fixedly connected to each other by adhesive.

[0024] The first absorbent layer 101 is made of microporous foamed polyurethane material, the second absorbent layer 102 is made of ACF artificial cartilage material, the support layer 103 is made of TPEE thermoplastic elastomer material, and the protective layer 104 is made of graphene-reinforced rubber material. It can seal between the materials of each layer, effectively prevent the external environment from affecting the absorbent layer, and help improve the overall service life of the gasket body 1.

[0025] The topmost absorption layer 101 of the gasket body 1 is made of microporous foamed polyurethane material, which can absorb high-frequency vibration, reduce wheel-rail contact noise, provide initial buffering, and disperse local pressure on the rail. The middle absorption layer 102 is made of ACF artificial cartilage material, which can absorb the impact energy of train operation, reduce the transmission of vibration to the sleeper, has strong fatigue resistance, and ensures long-term stability. The bottommost support layer 103 is made of TPEE thermoplastic elastomer material, which can provide elastic support, disperse sleeper pressure, reduce track bed stress concentration, and prevent sleeper settlement.

[0026] The adhesive uses a nano-silica modified adhesive, which can enhance mechanical properties, optimize rheological characteristics, and improve environmental resistance, significantly improving the reliability, durability, and economy of the rail vibration damping pad.

[0027] This utility model provides an easily replaceable shock-absorbing pad for railway tracks, and its specific working principle is as follows: When the device is in operation, the support frame 201 is aligned with the end of the pad body 1, and then the two snap-fit ​​strips 202 on the side of the support frame 201 are inserted into the two slots 203 respectively. As the snap-fit ​​strips 202 are fully inserted into the slots 203, the support frame 201 will just cover the side of the pad body 1. With the cooperation of the snap-fit ​​strips 202 and the slots 203, the position of the support frame 201 will be restricted. At this time, the pad body 1 can maintain a fixed state under the stable support of the support frame 201, and will not move or deform at will. During the process of inserting the pad body 1 under the rail, because the support frame 201 provides stable support and positioning, the operator can push the pad body 1 to the designated position more easily. Moreover, when it is found that the surface of the pad body 1 is uneven during the insertion process, the operator only needs to gently pull the support frame 201. Through the pulling and adjustment of the side of the pad body 1 by the support frame 201, the pad body 1 can be quickly and effectively restored to a flat state.

[0028] The topmost absorption layer 101 of the gasket body 1 is made of microporous foamed polyurethane material, which can absorb high-frequency vibration, reduce wheel-rail contact noise, provide initial buffering, and disperse local pressure on the rail. The middle absorption layer 102 is made of ACF artificial cartilage material, which can absorb the impact energy of train operation, reduce the transmission of vibration to the sleeper, has strong fatigue resistance, and ensures long-term stability. The bottommost support layer 103 is made of TPEE thermoplastic elastomer material, which can provide elastic support, disperse sleeper pressure, reduce track bed stress concentration, and prevent sleeper settlement.

[0029] 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. An easily replaceable shock-absorbing pad for railway tracks, comprising a pad body (1), characterized in that: The gasket body (1) has a support component (2) on both sides. The support component (2) includes a support frame (201) slidably connected to one side of the gasket body (1). Two snap-fit ​​strips (202) are fixedly connected to the outer wall of one side of the support frame (201). The two snap-fit ​​strips (202) are symmetrically arranged. A slot (203) is opened on the top and bottom outer walls of the gasket body (1). The two snap-fit ​​strips (202) are slidably connected to the two slots (203) respectively. The support frame (201) is fixedly connected to a limit structure.

2. The easily replaceable rail damping pad according to claim 1, characterized in that: The limiting structure includes a baffle (205) fixedly connected to the outer wall of one end of the support frame (201).

3. The easily replaceable rail damping pad according to claim 1, characterized in that: The edge of the snap-fit ​​strip (202) has an arc-shaped corner (204).

4. The easily replaceable rail damping pad according to claim 1, characterized in that: The support component (2) is made of 7075 aluminum alloy.

5. The easily replaceable rail damping pad according to claim 1, characterized in that: The gasket body (1) includes an absorption layer one (101), an absorption layer two (102), a support layer (103), and a protective layer (104). The absorption layer two (102) is located between the absorption layer one (101) and the support layer (103). The protective layer (104) is located outside the absorption layer one (101), the absorption layer two (102), and the support layer (103). The materials of each layer of the gasket body (1) are fixedly connected to each other by adhesive.

6. The easily replaceable rail damping pad according to claim 5, characterized in that: The first absorbent layer (101) is made of microporous foamed polyurethane material, the second absorbent layer (102) is made of ACF artificial cartilage material, the support layer (103) is made of TPEE thermoplastic elastomer material, and the protective layer (104) is made of graphene-reinforced rubber material.

7. The easily replaceable rail damping pad according to claim 5, characterized in that: The adhesive is a nano-silica modified adhesive.

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