A low-height, high-shoulder vibration-damping fastener assembly and its pre-assembly method

Abstract

This invention discloses a low-installation-height, high-shoulder vibration-damping fastener assembly, comprising an adjustment plate, an elastic pad, a top plate, anchor bolts, adjustment blocks, and elastic clips. It also includes a base frame and left and right shoulder vibration-damping plates with lateral vibration-damping functions. The base frame has vertically connected vibration-damping cavities. The adjustment plate rests on the sleeper, and the base frame presses down on the adjustment plate. The elastic pad is installed within the vibration-damping cavity of the base frame. The left and right shoulder vibration-damping plates are vertically installed on the left and right sides of the vibration-damping cavity, respectively. The top plate is located between the left and right shoulder vibration-damping plates and presses down on the elastic pad. The adjustment blocks press on both sides of the top plate to control the rail feet on both sides, and are held in place by elastic clips. The advantages are: flexible replacement of any damaged component among the left, right, and elastic pads; enhanced overall integrity of the assembly of the left, right, elastic pads, and top plate; and reduced rail installation height.

Description

Technical Field

[0001] This invention relates to a low-installation-height, high-shoulder vibration-damping fastener assembly and its pre-installation method, belonging to the field of rail transit technology. Background Technology

[0002] In recent years, with the rapid development of the subway transportation system, in order to further reduce noise pollution caused by the subway and improve passenger comfort, more and more subway lines have proposed to use high-elasticity vibration-damping fasteners instead of ordinary fasteners.

[0003] High-elasticity vibration-damping fasteners significantly reduce the overall vertical stiffness of track fasteners, greatly improving their comprehensive vibration reduction effect and effectively addressing vibration and noise issues generated during rail transit operation. However, with the widespread use of these high-elasticity fasteners, rails have gradually shown signs of faster wear, even corrugation. The main reasons are: 1. These fasteners reduce both vertical and lateral stiffness, increasing both vertical and lateral vibrations of the rails, leading to increased lateral slippage and consequently, increased rail wear and even corrugation; 2. Due to the reduced fastener stiffness, the rail head deflection stiffness also decreases. The lateral force generated by the wheel-rail interaction repeatedly acts on the rail head, causing the rail to deflect repeatedly on both lateral sides, resulting in rail oscillation and further exacerbating rail corrugation.

[0004] Currently, the two most common vibration damping methods for subway vibration damping fasteners are: combined vibration damping fasteners (represented by double-layer nonlinear vibration damping fasteners) and vulcanized integrated vibration damping fasteners (compression type and shear type). Their working principle is to achieve vibration damping by compressing or shearing the rubber under load, thereby reducing the vibration and impact transmitted from the wheel to the roadbed.

[0005] However, the main problem with existing vulcanized integrated track vibration damping fasteners, i.e., the elastic pad and the two lateral shoulders are integrally formed, is:

[0006] 1. When the stiffness requirements of the lateral shoulders on both sides are met, the vertical stiffness of the elastic pad is relatively large, resulting in limited vertical vibration reduction effect; when the vertical stiffness requirements of the elastic pad are met, the lateral stiffness of the lateral shoulders on both sides is insufficient, leading to poor lateral stability of the rail.

[0007] 2. When only the elastic pad or only the lateral shoulders are damaged, the one-piece molded elastic pad and the two lateral shoulders must be discarded together. Generally, on curved sections, due to the large and repeated lateral forces exerted by the train during operation, the lateral shoulders will be damaged before the elastic pad. On straight sections, however, the lateral forces exerted by the train during operation are very small, and only frequent vertical load impacts occur, so the elastic pad will be damaged before the lateral shoulders.

[0008] In addition, existing non-vulcanized integrated track vibration damping fasteners have the following drawbacks: although lateral displacement control also uses rigid insulating components such as plastic or nylon, the internal structure is relatively complex. The interaction between numerous assembly parts greatly increases the possibility of wear between parts during use, making it inconvenient for later product maintenance, and installation and disassembly are cumbersome.

[0009] Taking the double-layer nonlinear vibration damping fastener from Luoyang Shuangrui Rubber & Plastic Technology Co., Ltd. as an example, the lower iron plate has a hollow structure in the middle, with part of the middle rubber pad embedded in the cavity. Simultaneously, the upper iron plate protrudes and is embedded in the middle rubber pad, thus reducing the installation height of the fastener. It adopts a common design of pre-assembly with a locking mechanism, with a hollow boss at the spike hole on the lower iron plate. This, along with a nylon connecting sleeve, enables the pre-assembly of the upper iron plate, lower iron plate, middle rubber pad, and nylon connecting sleeve. The vibration damper includes an upper iron plate, a transverse stop, a lower iron plate, a middle rubber pad, and locking sleeves for both upper and lower iron plates. The pre-assembled parts are a single unit, while the remaining components are interchangeable with ordinary fasteners. The installation and disassembly methods are the same as for ordinary fasteners.

[0010] However, the double-layer nonlinear vibration damping fastener still has the following problems: 1. High installation height; 2. Many parts; 3. The elastic pad is easy to pop out after operation; 4. The upper nylon sleeve is not wear-resistant; 5. Lateral impact force is directly transmitted to the anchor bolt, causing the nylon sleeve inside the sleeper to be easily damaged.

[0011] Further searches revealed several related documents on vibration damping fasteners. Among them, patent application number 202122219281.8, entitled "A Vibration Damping Fastener with a Lateral Shoulder and a Fastener System Thereof," is most similar to this application. It discloses a vibration damping fastener with a lateral shoulder and a fastener system thereof. The vibration damping fastener includes an upper pad and a lower pad, with a lateral shoulder structure between them. The lateral shoulder structure includes a mutually cooperating limiting post, a receiving cavity, and an elastic filling block. The limiting post is inserted into the receiving cavity, and the elastic filling block is disposed between the limiting post and the receiving cavity. The outer surface of the elastic filling block is in contact with the inner wall of the receiving cavity, and the inner wall of the elastic filling block is in contact with the outer surface of the limiting post. This utility model, through the concealed lateral shoulder design, reduces vertical stiffness while maintaining lateral stiffness, making the overall structure of the vibration damping fastener more compact and lightweight. Furthermore, the use of an insulating connecting sleeve allows for pre-assembly of the vibration damping fastener. The patent also discloses a transverse shoulder structure, but the patented solution adopts a multi-layer vibration reduction structure design. The limiting post, which is the main component of the transverse shoulder, is fixed on the lower pad plate. This adds an extra pad plate to the fastening system, which not only increases the component cost of the system, but also increases the installation height of the rail.

[0012] Therefore, how to design a vibration damping fastener that can flexibly replace vertical and lateral vibration damping components, and also achieve low installation height and fewer parts is an urgent problem to be solved. Summary of the Invention

[0013] The technical problem to be solved by this invention is: how to design a vibration damping fastener that can flexibly replace vertical and lateral vibration damping components, and achieve low installation height and few parts.

[0014] To address the above problems, the technical solution proposed by this invention is as follows:

[0015] A low-installation-height, high-shoulder vibration-damping fastener assembly includes a height adjustment plate, an elastic pad, a top plate, anchor bolts, adjustment blocks, and elastic clips. It also includes a base frame and left and right shoulder vibration-damping plates with lateral vibration-damping functions. The base frame is a frame-shaped structure with vertically connected vibration-damping cavities. The height adjustment plate is placed on the sleeper, and the base frame presses down on the height adjustment plate. The elastic pad is installed within the vibration-damping cavities of the base frame. The left and right shoulder vibration-damping plates are vertically installed on the left and right sides of the vibration-damping cavities, respectively. The top plate is located between the left and right shoulder vibration-damping plates and presses down on the elastic pad. The adjustment blocks press down on both sides of the top plate to control the rail feet on both sides, and are held in place by elastic clips.

[0016] Furthermore, the base frame has an upward-rising left shoulder and a right shoulder on both sides, and the right side of the left shoulder and the left side of the right shoulder are respectively provided with a vertical left mounting groove and a right mounting groove. The left shoulder damping plate and the right shoulder damping plate are respectively installed and confined in the left mounting groove of the left shoulder and the right mounting groove of the right shoulder.

[0017] Furthermore, the right side of the left shoulder damping plate and the left side of the right shoulder damping plate are respectively provided with a vertical left mounting groove 2 and a right mounting groove 2. The top plate has an upward-rising left shoulder 2 and a right shoulder 2 on both sides. The left shoulder 2 and the right shoulder 2 are located in the left mounting groove 2 and the right mounting groove 2, respectively, and respectively abut the left shoulder damping plate and the right shoulder damping plate against the left mounting groove 1 and the right mounting groove 1 of the left shoulder 1 and the right shoulder 1.

[0018] Furthermore, the left shoulder damping plate has a left pressure foot extending to the left on its left side, and the right shoulder damping plate has a right pressure foot extending to the right on its right side. The left end of the damping cavity extends into a space to accommodate the left pressure foot, the top wall of which is a downward-facing left pressure surface. The right end of the damping cavity extends into a space to accommodate the right pressure foot, the top wall of which is a downward-facing right pressure surface. During installation, the left pressure surface and the right pressure surface respectively press down on the left pressure foot of the left shoulder damping plate and the right pressure foot of the right shoulder damping plate.

[0019] Furthermore, the elastic pad is a basin-shaped body with a basin cavity, which is composed of elastic sidewalls and an elastic bottom plate. The top plate is pressed on the elastic bottom plate inside the basin cavity of the elastic pad, and the front and rear sides of the top plate are respectively pressed against the elastic sidewalls at the front and rear of the basin cavity of the elastic pad.

[0020] Furthermore, the left side of the second left shoulder of the top plate has a left extension plate extending to the left, and the right side of the second right shoulder has a right extension plate extending to the right.

[0021] Furthermore, the elastic base plate is provided with a plurality of elastic bosses, and there are compression gaps between the elastic bosses.

[0022] Furthermore, the base frame is integrally formed with the left shoulder 1 and the right shoulder 1; the top plate is integrally formed with the left shoulder 2 and the right shoulder 2.

[0023] Furthermore, the left and right sides of the left and right shoulder damping plates are both metal layers, and a rubber layer formed by vulcanization bonding exists between the left and right metal layers.

[0024] A pre-assembly method for a low-installation-height, high-shoulder vibration-damping fastener assembly involves pre-assembling the foundation frame, left shoulder vibration-damping plate, right shoulder vibration-damping plate, top plate, and elastic pad as a whole, comprising the following steps:

[0025] Step 1: Invert the base frame;

[0026] Step 2: Insert the left shoulder damping plate and the right shoulder damping plate downwards into the left mounting groove 1 and the right mounting groove 1 of the left shoulder 1 and the right shoulder 1 respectively, so that the left pressure foot of the left shoulder damping plate and the right pressure foot of the right shoulder damping plate press against the left pressure surface and the right pressure surface of the damping cavity respectively.

[0027] Step 3: Insert the top plate downwards into the vibration damping cavity, so that the left extension plate of the top plate presses against the bottom surface of the left pressure foot of the left shoulder vibration damping plate, and the right extension plate of the top plate presses against the bottom surface of the right pressure foot of the right shoulder vibration damping plate; so that the second left shoulder and the second right shoulder are located in the second left mounting groove of the left shoulder vibration damping plate and the second right mounting groove of the right shoulder vibration damping plate, respectively.

[0028] Step 4: Insert the elastic pad downwards into the vibration damping cavity, press the top plate into the basin of the elastic pad, and make the elastic sidewalls at both ends of the elastic pad press against the bottom surface of the left pressure foot of the left shoulder vibration damping plate and the bottom surface of the right pressure foot of the right shoulder vibration damping plate, respectively. Beneficial effects

[0029] 1. It can flexibly replace any damaged component among the left shoulder damping plate, right shoulder damping plate, and elastic pad;

[0030] 2. The installation of the base frame enhances the overall integrity of the assembly of the left shoulder damping plate, right shoulder damping plate, elastic pad, and top plate, especially the interlayer stability between the elastic pad and the top plate;

[0031] 3. It eliminates at least one bottom plate and two bolts used to fasten the top plate, elastic pad, and bottom plate;

[0032] 4. By eliminating one bottom plate, the overall installation height of the rail is reduced, enhancing the stability of the fastener assembly in controlling the rail. Attached Figure Description

[0033] Figure 1 A three-dimensional schematic diagram of using the low installation height, high shoulder vibration-damping fastener assembly to clamp the steel rail;

[0034] Figure 2 This is a three-dimensional schematic diagram showing the pre-assembled base frame, left shoulder damping plate, right shoulder damping plate, elastic pad, and top plate.

[0035] Figure 3 A three-dimensional schematic diagram of the basic framework;

[0036] Figure 4 This is a three-dimensional schematic diagram of the base frame, showing the left and right pressure surfaces;

[0037] Figure 5 A three-dimensional schematic diagram of the left and right shoulder damping plates;

[0038] Figure 6 A three-dimensional schematic diagram of the elastic pads installed inside the base frame;

[0039] Figure 7 This is a three-dimensional schematic diagram of an elastic pad.

[0040] Figure 8 A three-dimensional schematic diagram showing the installation relationship between the elastic pad and the left and right shoulder damping plates;

[0041] Figure 9 The top panel is a three-dimensional schematic diagram;

[0042] Figure 10 This is a schematic diagram of the cross-section of the right shoulder damping plate.

[0043] In the diagram: 1. Height adjustment plate; 2. Foundation frame; 201. Left shoulder 1; 2011. Left mounting slot 1; 202. Right shoulder 1; 2021. Right mounting slot 1; 203. Vibration damping cavity; 204. Left pressure surface; 205. Right pressure surface; 3. Left shoulder vibration damping plate; 301. Left mounting slot 2; 302. Left pressure foot; 4. Right shoulder vibration damping plate; 401. Right mounting slot 2; 402. Right pressure foot; 5. Elastic pad; 501. Elastic sidewall; 502. Elastic base plate; 5021. Elastic boss; 503. Basin; 6. Top plate; 601. Left shoulder 2; 602. Right shoulder 2; 603. Left extension plate; 604. Right extension plate; 7. Anchor bolt; 8. Adjustable distance block; 9. Elastic strip; 10. Metal layer; 11. Rubber layer; 12. Rail. Detailed Implementation

[0044] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1

[0045] like Figure 1 , 2 As shown in Figures 3 and 5, a low-installation-height, high-shoulder vibration-damping fastener assembly includes an adjustable plate 1, an elastic pad 5, a top plate 6, anchor bolts 7, adjustable blocks 8, and elastic strips 9. The improvement lies in the inclusion of a base frame 2 and left and right shoulder vibration-damping plates 3 and 4, respectively, which have lateral vibration-damping functions. The base frame 2 is a frame-shaped structure with vertically connected vibration-damping cavities 203. In application, the adjustable plate 1 is placed on the sleeper (not shown in the figure), the base frame 2 is pressed onto the adjustable plate 1, the elastic pad 5 is installed within the vibration-damping cavity 203 of the base frame 2, the left and right shoulder vibration-damping plates 3 and 4 are vertically installed on the left and right sides of the vibration-damping cavity 203, respectively, the top plate 6 is located between the left and right shoulder vibration-damping plates 3 and 4 and presses against the elastic pad 5, and the adjustable blocks 8 are pressed against the sides of the top plate 6 to control the rail feet on both sides of the rail 12, with the elastic strips 9 holding the adjustable blocks 8 in place. In this way, the base frame 2 horizontally constrains the elastic pad 5, the left shoulder damping plate 3, the right shoulder damping plate 4, and the top plate 6, while the elastic pad 5 bears the vertical pressure of the top plate 6 and dampens vertical impacts. Here, the left shoulder damping plate 3, the right shoulder damping plate 4, and the elastic pad 5 are set separately, and any damaged component can be replaced individually. Simultaneously, the base frame 2 uses a frame design instead of the base plate used in existing technologies, constraining the elastic pad 5 and the top plate 6 within the damping cavity 203 of the base frame 2. This not only greatly enhances the interlayer stability between the elastic pad 5 and the top plate 6, but also reduces the overall installation height of the damping fasteners due to the absence of a traditional base plate. Here, the high shoulder includes the left shoulder damping plate 3 and the right shoulder damping plate 4, which stand upright at both ends.

[0046] like Figure 2As shown in Figure 9, the base frame 2 further comprises an upwardly raised left shoulder 201 and a right shoulder 202 on both sides. The right side of the left shoulder 201 and the left side of the right shoulder 202 are respectively provided with vertical left mounting groove 2011 and right mounting groove 2021. The left shoulder damping plate 3 and the right shoulder damping plate 4 are respectively installed and confined in the left mounting groove 2011 of the left shoulder 201 and the right mounting groove 2021 of the right shoulder 202 of the base frame 2. The left shoulder damping plate 3 and the right shoulder damping plate 4 are respectively provided with vertical left mounting groove 301 and right mounting groove 401 on the right side and the right shoulder damping plate 4, respectively. The top plate 6 has upward-rising left shoulder 601 and right shoulder 602 on both sides. The left shoulder 601 and right shoulder 602 are located in the left mounting groove 301 and right mounting groove 401, respectively, and respectively press the left shoulder damping plate 3 and the right shoulder damping plate 4 against the left mounting groove 2011 and right mounting groove 2021 of the left shoulder 201 and the right shoulder 202. The left shoulder damping plate 3 has a left pressure foot 302 extending to the left on its left side, and the right shoulder damping plate 4 has a right pressure foot 402 extending to the right on its right side. The left end of the damping cavity 203 extends out to accommodate the left pressure foot 302, and the top wall of this space is a downward-facing left pressure surface 204. The right end of the damping cavity 203 extends out to accommodate the right pressure foot 402, and the top wall of this space is a downward-facing right pressure surface 205. During installation, the left pressure surface 204 and the right pressure surface 205 respectively press down on the left pressure foot 302 of the left shoulder damping plate 3 and the right pressure foot 402 of the right shoulder damping plate 4. The elastic pad 5 is a basin-shaped body with a basin 503, consisting of elastic sidewalls 501 and an elastic base plate 502. The top plate 6 presses against the elastic base plate 502 inside the basin 503 of the elastic pad 5. The front and rear sides of the top plate 6 are respectively in contact with the elastic sidewalls 501 at the front and rear of the basin 503 of the elastic pad 5. The left side of the left shoulder 2 601 of the top plate 6 has a left extension plate 603 extending to the left, and the right side of the right shoulder 2 602 has a right extension plate 604 extending to the right. This causes the bottom surface of the left pressure foot 302 of the left shoulder damping plate 3 to press on the left extension plate 603 of the top plate 6, and the bottom surface of the right pressure foot 402 of the right shoulder damping plate 4 to press on the right extension plate 604 of the top plate 6.

[0047] In the above configuration, the left pressure surface 204 and right pressure surface 205 of the foundation frame press down on the left pressure foot 302 of the left shoulder damping plate 3 and the right pressure foot 402 of the right shoulder damping plate 4, respectively. The left pressure foot 302 of the left shoulder damping plate 3 and the right pressure foot 402 of the right shoulder damping plate 4 then press down on the left extension plate 603 extending to the left of the top plate 6 and the right extension plate 604 extending to the right of the right shoulder 602, respectively. The top plate 6 then presses down on the elastic bottom plate 502 of the elastic pad 5. At the same time, the elastic pad 5 is installed and confined within the foundation frame 2, and the left shoulder damping plate 3 and the right shoulder damping plate 4 are installed and confined on the left shoulder 201 of the foundation frame 2, respectively. The top plate 6 is not only installed within the foundation frame, but its left shoulder 601 and right shoulder 602 are also respectively confined within the left mounting slot 301 of the left shoulder damping plate 3 and the right mounting slot 401 of the right shoulder damping plate 4. This allows the elastic pad 5, the foundation frame 2, the top plate 6, the left shoulder damping plate 3 and the right shoulder damping plate 4 to be assembled into a highly integrated whole. At the same time, it not only eliminates the need for a bottom plate in the traditional design, but also eliminates the need for at least two bolts that fix the top plate, elastic pad and bottom plate together in the traditional design.

[0048] like Figure 7 As shown, the elastic base plate 502 is further provided with a plurality of elastic protrusions 5021, and there are expansion gaps between the elastic protrusions 5021. When encountering vertical vibration damping impact, the elastic protrusions 5021 are compressed and expand outward into the expansion gaps.

[0049] like Figure 3 , 9 As shown, preferably, the base frame 2 is integrally formed with the left shoulder 201 and the right shoulder 202; the top plate 6 is integrally formed with the left shoulder 201 and the right shoulder 202. Example 2

[0050] like Figure 10 As shown, the left and right sides of the left shoulder damping plate 3 and the right shoulder damping plate 4 are both metal layers 10, and there is a rubber layer 11 formed by vulcanization bonding between the left metal layer 10 and the right metal layer 10.

[0051] like Figure 2 As shown in Figure 9, a pre-assembly method for a low-installation-height, high-shoulder vibration-damping fastener assembly involves pre-assembling the base frame 2, left shoulder vibration-damping plate 3, right shoulder vibration-damping plate 4, top plate 6, and elastic pad 5 into a single unit. The pre-assembly includes the following steps:

[0052] Step 1: Invert the base frame 2;

[0053] Step 2: Insert the left shoulder damping plate 3 and the right shoulder damping plate 4 downward into the left mounting groove 2011 and the right mounting groove 2021 of the left shoulder 201 and the right shoulder 202, respectively, so that the left pressure foot 302 of the left shoulder damping plate 3 and the right pressure foot 402 of the right shoulder damping plate 4 press against the left pressure surface 204 and the right pressure surface 205 of the damping cavity 203, respectively.

[0054] Step 3: Insert the top plate 6 downward into the vibration damping cavity 203, so that the left extension plate 603 of the top plate 6 presses against the bottom surface of the left pressure foot 302 of the left shoulder vibration damping plate 3, and the right extension plate 604 of the top plate 6 presses against the bottom surface of the right pressure foot 402 of the right shoulder vibration damping plate 4; so that the left shoulder 2 601 and the right shoulder 2 602 are respectively located in the left mounting groove 2 301 of the left shoulder vibration damping plate 3 and the right mounting groove 2 401 of the right shoulder vibration damping plate 4;

[0055] Step 4: Insert the elastic pad 5 downward into the vibration damping cavity 203, press the top plate 6 into the basin 503 of the elastic pad 5, and make the elastic sidewalls 501 at both ends of the elastic pad 5 press against the bottom surface of the left pressure foot 302 of the left shoulder damping plate 3 and the bottom surface of the right pressure foot 402 of the right shoulder damping plate 4, respectively.

[0056] After the above pre-assembly is completed, the pre-assembled body is turned over and used for the formal installation of the rails.

[0057] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A low-installation-height, high-shoulder vibration-damping fastener assembly, comprising an adjustable plate (1), an elastic pad (5), a top plate (6), anchor bolts (7), an adjustable block (8), and a spring strip (9), characterized in that: It also includes a base frame (2) and a left shoulder damping plate (3) and a right shoulder damping plate (4) with lateral vibration reduction function. The base frame (2) is a frame shape with a vertically connected damping cavity (203). The height adjustment plate (1) is placed on the sleeper, and the base frame (2) is pressed on the height adjustment plate (1). The elastic pad (5) is installed in the damping cavity (203) of the base frame (2). The left shoulder damping plate (3) and the right shoulder damping plate (4) are respectively vertically installed on the left and right sides of the damping cavity (203). The top plate (6) The adjustment block (8) is located between the left shoulder damping plate (3) and the right shoulder damping plate (4) and presses on the elastic pad (5). The adjustment block (8) presses on the rail feet on both sides of the top plate (6) and the control rail (12). The adjustment block (8) is pressed by the elastic strip (9). The base frame (2) has an upward-rising left shoulder (201) and a right shoulder (202) on both sides. The right side of the left shoulder (201) and the left side of the right shoulder (202) are respectively provided with vertical left mounting groove (2011) and right mounting groove (2021). The left shoulder (201) and the right shoulder (202) are respectively provided with vertical left mounting groove (2011) and right mounting groove (2021). The shoulder damping plate (3) and the right shoulder damping plate (4) are respectively installed and confined in the left mounting groove (2011) of the left shoulder (201) and the right mounting groove (2021) of the right shoulder (202); the right side of the left shoulder damping plate (3) and the left side of the right shoulder damping plate (4) are respectively provided with vertical left mounting groove (301) and right mounting groove (401); the top plate (6) has upward-rising left shoulder (601) and right shoulder (602) on both sides; the left shoulder (601) and right shoulder (602) are respectively provided with vertical left mounting groove (301) and right mounting groove (401). Shoulder 2 (602) is located in left mounting groove 2 (301) and right mounting groove 2 (401) respectively, and the left shoulder damping plate (3) and right shoulder damping plate (4) are pressed against the left mounting groove 1 (2011) and right mounting groove 1 (2021) of the left shoulder 1 (201) and right shoulder 1 (202) respectively; the left and right sides of the left shoulder damping plate (3) and right shoulder damping plate (4) are metal layers (10), and there is a rubber layer (11) formed by vulcanization bonding between the left metal layer (10) and the right metal layer (10).

2. The low installation height, high shoulder vibration damping fastener assembly according to claim 1, characterized in that: The left shoulder damping plate (3) has a left pressure foot (302) extending to the left on the left side, and the right shoulder damping plate (4) has a right pressure foot (402) extending to the right on the right side. The damping cavity (203) extends a space at the left end to accommodate the left pressure foot (302), and the top wall of the space is a downward left pressure surface (204). The damping cavity (203) extends a space at the right end to accommodate the right pressure foot (402), and the top wall of the space is a downward right pressure surface (205). During installation, the left pressure surface (204) and the right pressure surface (205) respectively press down the left pressure foot (302) of the left shoulder damping plate (3) and the right pressure foot (402) of the right shoulder damping plate (4).

3. The low installation height, high shoulder vibration damping fastener assembly according to claim 2, characterized in that: The elastic pad (5) is a basin-shaped body with a pelvic cavity (503) composed of an elastic sidewall (501) and an elastic bottom plate (502). The top plate (6) presses on the elastic bottom plate (502) inside the pelvic cavity (503) of the elastic pad (5). The front and rear sides of the top plate (6) are respectively pressed against the elastic sidewalls (501) at the front and rear of the pelvic cavity (503) of the elastic pad (5).

4. The low installation height, high shoulder vibration damping fastener assembly according to claim 3, characterized in that: The top plate (6) has a left extension plate (603) extending to the left on the left side of the left shoulder second (601) and a right extension plate (604) extending to the right on the right side of the right shoulder second (602).

5. The low installation height, high shoulder vibration damping fastener assembly according to claim 3, characterized in that: The elastic base plate (502) is provided with a plurality of elastic bosses (5021), and there are expansion gaps between the elastic bosses (5021).

6. The low installation height, high shoulder vibration damping fastener assembly according to claim 1, characterized in that: The base frame (2) is integrally formed with the left shoulder 1 (201) and the right shoulder 1 (202); the top plate (6) is integrally formed with the left shoulder 2 (601) and the right shoulder 2 (602).

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