Anti-shift damping fastener

Abstract

The utility model discloses an anti -migration shock -absorbing fastener, including from top to bottom arranged rigid backing plate, embedded rod and first elastic backing plate, and the first elastic backing plate and rigid backing plate are hinged through embedded rod, still include insulating buffer apron and first connecting piece, and the first elastic backing plate is embedded in the insulating buffer apron, and the rigid backing plate bottom surface is located above the insulating buffer apron top surface, and the rigid backing plate, embedded rod, first elastic backing plate and insulating buffer apron are installed on the track board upper surface through the first connecting piece, still include elastic strip, second elastic backing plate and second connecting piece, and the rigid backing plate upper surface is installed steel rail body through the second elastic backing plate, and the elastic strip is pressed in the steel rail body and rigid backing plate through the second connecting piece. The utility model has the advantages that when the shock -absorbing fastener is subjected to greater lateral force, avoids the slip between rigid backing plate and first elastic backing plate and the first elastic backing plate and insulating buffer apron, makes the shock -absorbing fastener whole stability height.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to an anti-deviation vibration damping fastener. Background Technology

[0002] While bringing convenience to people's lives, urban rail transit systems are also becoming new sources of noise and vibration. Controlling the noise and vibration of urban rail transit systems not only plays a positive role in protecting the environment, but also has important significance for improving passenger comfort.

[0003] In existing technologies, vibration damping fasteners mostly employ the method of laying grooved low-stiffness rubber pads under the rail or adding an intermediate rubber pad between two layers of iron pads in conjunction with the rubber pads under the rail for vibration damping. However, laying grooved low-stiffness rubber pads under the rail results in a large dynamic displacement of the rail, and adding an intermediate rubber pad between two layers of iron pads makes the fastener system complex in structure, with a large number of parts and relatively high cost.

[0004] Chinese patent CN218059724U discloses a locking type vibration damping fastener, including an iron pad, a spring clip, an under-rail elastic pad, an under-plate elastic pad, an insulating buffer plate, a connecting rod, and a gauge block. The insulating buffer plate, the under-plate elastic pad, and the iron pad are stacked and fixed on the track plate in sequence. The gauge block is located on the outside of the rail. The spring clip presses on the iron pad and the gauge block. The under-rail elastic pad is located between the rail and the iron pad. The connecting rod is located between the iron pad and the under-plate elastic pad. Each end of the connecting rod has a hollow tenon and a second through hole. The iron pad has a first through hole diagonally. The upper surface of the under-plate elastic pad has a first through groove. The hollow tenon is embedded in the first through hole, and the lower end face of the connecting rod is embedded in the first through groove. The connecting rod is embedded between the iron pad and the under-plate elastic pad.

[0005] However, in actual operation, this set of locking vibration damping fasteners exhibits poor stability on small curves when the lateral force is large.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The technical problem to be solved by this utility model is: to solve the problem of insufficient stability of the vibration damping fastener when it is subjected to large lateral forces, while ensuring the vibration damping performance of the fastener.

[0008] This utility model solves the above-mentioned technical problems through the following technical means:

[0009] This utility model claims protection for an anti-displacement vibration damping fastener, which includes a rigid pad, an insert rod and a first elastic pad arranged sequentially from top to bottom. The first elastic pad and the rigid pad are engaged by the insert rod to limit the sliding of the first elastic pad and the rigid pad in the horizontal direction.

[0010] It also includes an insulating buffer plate and a first connector. The first elastic pad is fitted inside the insulating buffer plate, and the bottom surface of the rigid pad is located above the top surface of the insulating buffer plate. The rigid pad, the insert rod, the first elastic pad and the insulating buffer plate are installed on the upper surface of the track plate through the first connector.

[0011] It also includes a spring clip, a second elastic pad, and a second connector. The rail body is mounted on the upper surface of the rigid pad through the second elastic pad. The spring clip is pressed against the rail body and the rigid pad through the second connector. The static stiffness threshold of the second elastic pad is greater than that of the first elastic pad.

[0012] Preferably, the insulating buffer plate includes an insulating buffer pad and a first blocking block. The first blocking block protrudes from the outer edge of the insulating buffer pad. The first blocking block is perpendicular to the surface of the insulating buffer pad. The first blocking block and the insulating buffer pad enclose a space. A first elastic pad is embedded in the space. The bottom surface of the rigid pad is located above the first blocking block.

[0013] Preferably, the first blocking block includes a horizontal transverse blocking block and a horizontal longitudinal blocking block. One or more horizontal transverse blocking blocks are provided on the wide side of the insulating buffer pad, and one or more horizontal longitudinal blocking blocks are provided on the long side of the insulating buffer pad.

[0014] The first elastic pad is placed from top to bottom until it is attached to the upper surface of the insulating buffer pad, until the horizontal and vertical blocks are fitted into the first grooves corresponding to the outer edge of the first elastic pad, and the bottom surface of the rigid pad is located above the top surface of the horizontal and vertical blocks.

[0015] Preferably, the first elastic pad and the rigid pad have grooves on their adjacent surfaces that mate with each other, and a rod is engaged in the groove, the outline of the rod being adapted to the groove.

[0016] Preferably, a second blocking block is protruding at the wide edge of the upper surface of the insert rod, and it forms an insertion fit with the second blocking groove recessed on the lower surface of the rigid pad.

[0017] Preferably, the insert has an "8" shaped cross-section, and the upper surface of the insert has diagonally arranged bosses on both sides, which form a plug-in fit with the concave hole through the surface of the rigid pad.

[0018] Preferably, it also includes gauge blocks, with gauge blocks set on both sides of the rail body; a set of mounting blocks are set diagonally on both sides of the rigid pad, the mounting blocks and the insulating sleeve are staggered, a gap is set between adjacent mounting blocks, and mounting grooves are opened on the bottom side of the adjacent mounting blocks, the mounting grooves are engaged with the screw heads of T-bolts, the T-bolts engage with the nuts, and the elastic strip is pressed against the gauge blocks and the rigid pad by the nuts, wherein the T-bolts and nuts together constitute the second connecting member.

[0019] Preferably, it also includes an insulating sleeve and a pressure cap. The upper surface of the rigid pad is recessed with a pressure hole, which is concentrically arranged with the boss. An insulating sleeve is embedded in the pressure hole. A pressure cap is provided on the upper surface of the insulating sleeve. The pressure cap, insulating sleeve, rigid pad, insert rod, first elastic pad and insulating buffer plate pass through the first mounting hole. The first mounting hole is coaxially arranged with the boss. The first connecting piece passes through the first mounting hole from top to bottom and is threadedly engaged with the second mounting hole on the track plate.

[0020] Preferably, it also includes a limiting sleeve, which is located between the second blocking block and the second blocking groove.

[0021] Preferably, a second elastic pad is provided on the bottom surface of the rail body, and a limit block is provided on the wide side of the second elastic pad. The limit block is recessed with a groove, and the groove and the block provided on the long side of the rail body form a snap-fit ​​engagement.

[0022] The advantages of this utility model are:

[0023] I. This utility model restricts the horizontal sliding freedom of the first elastic pad and the rigid pad by setting a locking rod between them; furthermore, the first elastic pad is fitted into the insulating buffer plate until the bottom surface of the rigid pad contacts the top surface of the insulating buffer plate, further restricting the horizontal sliding freedom of the rigid pad and the insulating buffer plate; because the rigid pad and the first elastic pad adopt an installation method of hard on top and soft on the bottom, while ensuring that the vibration damping fastener has good vibration damping performance, when the vibration damping fastener is subjected to a large lateral force, the rigid pad and the first elastic pad are prevented from sliding together. Slippage occurs between the elastic pad and the insulating buffer plate, resulting in high overall stability of the vibration damping fastener. Furthermore, a second elastic pad with a static stiffness threshold greater than that of the first elastic pad is used. Through this top-hard, bottom-soft elastic distribution of the two pads, the static stiffness of the second elastic pad is increased, effectively improving the anti-overturning coefficient of the vibration damping fastener, ensuring the stability of the rail body, and improving the stress state of the elastic clip 15. Combined with reducing the static stiffness of the first elastic pad, the vibration damping fastener still achieves good vibration damping performance, thus improving the overall stability of the vibration damping fastener.

[0024] II. The first blocking block is positioned at the outer edge of the insulating buffer pad, forming a space with the insulating buffer pad to partially accommodate the first elastic pad. This design offers two advantages: First, the first elastic pad, compared to the insulating buffer pad, provides a limiting effect, preventing lateral displacement. Second, the bottom surface of the rigid pad is located above the first blocking block. When the vibration damping fastener's offset is excessive, the bottom surface of the rigid pad contacts the upper surface of the first blocking block, increasing the rigidity of the vibration damping fastener. Combining these two advantages, while ensuring the vibration damping performance of the fastener, not only improves its anti-overturning capability but also controls the vertical displacement of the rail body, increasing safety.

[0025] Third, the main purpose of setting the insert rod is to replace the lower rigid pad in the prior art. Those skilled in the art can understand that the prior art requires the design of two layers of vibration damping components. Each layer of vibration damping components contains at least one rigid pad and at least one elastic pad. Therefore, during installation, by embedding the insert rod into the groove of the first elastic pad and the rigid pad, the lower iron pad is reduced, and the overall height of the vibration damping fastener is reduced, so that it can be consistent with the height of the ordinary fastener of the main line. Therefore, the line does not need to be designed with a long slope, which not only ensures the vibration damping performance, but also simplifies the line design, laying and maintenance. The ordinary fastener of the main line is the prior art and will not be described in detail. Moreover, compared with the lower iron pad, the insert rod has a simpler structure and is lighter in weight. During casting production, it can be arranged on a mold plate with the rigid pad, which reduces costs and simplifies the overall structure of the vibration damping fastener, making it easier to install and disassemble on site.

[0026] IV. The shape of the insert rod is determined by a variety of factors, such as material loss and cutting difficulty in actual processing, as well as the stability effect of the first elastic pad and the rigid pad after being connected by the insert rod. It can also be designed into other shapes based on the actual situation. The preferred shape is an "8" shaped cross section of the insert rod, so as to ensure that the boss is arranged diagonally. The staggered effect formed by the diagonal arrangement makes the force more uniform and the lateral limiting effect better.

[0027] Fifth, by using the mounting groove and the screw head of the T-bolt to engage, the existing technology replaces the method of installing the T-bolt by rotating it through the anti-rotation hole of the rigid pad. This reduces the length requirement of the T-bolt and also reduces the tendency of the T-bolt to be damaged.

[0028] VI. Generally speaking, the most common first connector on the market is the anchor bolt. By setting an insulating sleeve and a pressure cap, the tightening force of the anchor bolt is prevented from being directly applied to the rigid pad. This not only avoids the elastic loss caused by the initial pre-compression of the first elastic pad, but also ensures good vertical stiffness consistency of the system and guarantees the vibration reduction effect.

[0029] 7. The limiting sleeve is preferably a wear-resistant polyurethane limiting sleeve. The limiting sleeve is pressed together with the boss and the concave hole respectively, which can further enhance the lateral limiting effect of the rigid pad and prevent lateral displacement. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of an anti-offset vibration damping fastener according to Embodiment 1 of this utility model;

[0031] Figure 2 This is a front view of an anti-offset vibration damping fastener according to Embodiment 1 of this utility model;

[0032] Figure 3 This is an exploded view of the rigid pad, the insert rod, the first elastic pad, and the insulating buffer plate in Embodiment 1 of this utility model;

[0033] Figure 4 This is a schematic diagram of the limiting sleeve in Embodiment 1 of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the second elastic pad in Embodiment 1 of this utility model;

[0035] Figure 6 This is a schematic diagram of the rigid pad in Embodiment 1 of this utility model.

[0036] 10. Rigid pad; 100. Recessed hole; 101. Second blocking groove; 102. Mounting block; 1020. Mounting slot; 11. Insert rod; 110. Boss; 111. Second blocking block; 12. First elastic pad; 13. Insulating buffer plate; 130. Insulating buffer pad; 131. First blocking block; 1310. Horizontal transverse blocking block; 1311. Horizontal longitudinal blocking block; 14. First connecting piece; 15. Elastic strip; 16. Track gauge block; 17. Second connecting piece; 170. T-bolt; 171. Nut; 18. Insulating sleeve; 19. Pressure cap; 20. Second elastic pad; 201. Limiting block; 202. Slot; 21. Limiting sleeve;

[0037] a. Rail body; b. Track slab. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Example 1

[0040] See Figures 1 to 3 This embodiment protects an anti-offset vibration damping fastener, including a rigid pad 10, an insert rod 11, a first elastic pad 12, an insulating buffer plate 13, a first connector 14, an elastic strip 15, a gauge block 16, a second connector 17, an insulating sleeve 18, a pressure cap 19, a second elastic pad 20, and a limiting sleeve 21.

[0041] See Figures 1 to 4 The rigid pad 10, the insert rod 11, and the first elastic pad 12 are arranged sequentially from top to bottom. The first elastic pad 12 and the rigid pad 10 are engaged by the insert rod 11. The surfaces of the first elastic pad 12 and the rigid pad 10 are recessed with grooves that align with each other. The insert rod 11 is engaged in the groove. The outline of the insert rod 11 matches the groove. The insert rod 11 has an "8" shaped cross-section. The shape of the insert rod 11 takes into account various factors, such as material loss and cutting difficulty in actual processing, as well as the stability effect after the first elastic pad 12 and the rigid pad 10 are engaged by the insert rod 11. It can also be designed into other shapes based on actual conditions. Preferably, the insert rod 11 has an "8" shaped cross-section, so as to ensure that the boss 110 is arranged diagonally. The misalignment effect formed by the diagonal arrangement makes the force more uniform and the lateral limiting effect better. Furthermore, the upper surface of the insert rod 11 is provided with diagonally arranged bosses 110 on both sides. The bosses 110 and the recesses 100 penetrating the surface of the rigid pad 10 form an insertion fit. A second blocking block 111 is provided on the wide side of the upper surface of the insert rod 11, and it forms an insertion fit with the second blocking groove 101 recessed on the lower surface of the rigid pad 10. A limiting sleeve 21 is provided between the second blocking block 111 and the second blocking groove 101. The limiting sleeve 21 is preferably a wear-resistant polyurethane limiting sleeve. The limiting sleeve 21 is pressed and fitted with the bosses 110 and the recesses 100 respectively, which can further enhance the lateral limiting effect of the rigid pad 10 and prevent its lateral displacement, thereby limiting the sliding of the first elastic pad 12 and the rigid pad 10 in the horizontal direction. The insert rod 11 is mainly to replace the lower rigid pad in the prior art. Those skilled in the art can understand that the prior art is the same as the rigid pad in the prior art. During the procedure, two layers of vibration damping components need to be designed. Each layer of vibration damping components contains at least one rigid pad and at least one elastic pad. Therefore, during installation, by embedding the insert rod 11 into the groove on the adjacent surface of the first elastic pad 12 and the rigid pad 10, the lower iron pad is reduced, and the overall height of the vibration damping fastener is reduced, so that it can be consistent with the height of the ordinary fastener on the main line. Therefore, the line does not need to be designed with a long slope, which not only ensures the vibration damping performance, but also simplifies the line design, laying and maintenance. The ordinary fastener on the main line is existing technology and will not be described in detail. Moreover, compared with the lower iron pad, the insert rod 11 has a simpler structure and is lighter in weight. During casting production, it can be arranged on a mold plate with the rigid pad 10, which reduces costs and simplifies the overall structure of the vibration damping fastener, making it easier to install and disassemble on site.

[0042] The first elastic pad 12 is fitted inside the insulating buffer enclosure 13. The bottom surface of the rigid pad 10 is located above the top surface of the insulating buffer enclosure 13. The insulating buffer enclosure 13 includes an insulating buffer pad 130 and a first blocking block 131. The first blocking block 131 protrudes from the outer edge of the upper surface of the insulating buffer pad 130. The first blocking block 131 is perpendicular to the surface of the insulating buffer pad 130. The first blocking block 131 and the insulating buffer pad 130 enclose a space. The first elastic pad 12 is fitted inside the space. The bottom surface of the rigid pad 10 is located above the first blocking block 131. The first blocking block 131 is located at the outer edge of the upper surface of the insulating buffer pad 130, so that the first blocking block 131 and the insulating buffer pad 130 enclose a space for partially placing the first elastic pad 12. This design has two advantages. First, the first elastic pad 12, compared to the insulating buffer pad 130, plays a limiting role and prevents lateral displacement. Secondly, the bottom surface of the rigid pad 10 is located above the first blocking block 131. When the offset of the vibration damping fastener is too large, the bottom surface of the rigid pad 10 contacts the upper surface of the first blocking block 131, which improves the rigidity of the vibration damping fastener. Combining these two advantages, while ensuring the vibration damping performance of the fastener, not only is the anti-overturning capability of the fastener improved, but the vertical displacement of the rail body a is also controlled, increasing safety.

[0043] The first blocking block 131 includes a horizontal transverse blocking block 1310 and a horizontal longitudinal blocking block 1311. One or more horizontal transverse blocking blocks 1310 are provided at the wide side of the upper surface of the insulating buffer pad 130, and one or more horizontal longitudinal blocking blocks 1311 are provided at the long side of the upper surface of the insulating buffer pad 130. The first elastic pad 12 is attached to the upper surface of the insulating buffer pad 130 from top to bottom, until the horizontal transverse blocking blocks 1310 and the horizontal longitudinal blocking blocks 1311 are fitted into the first blocking grooves correspondingly recessed on the outer edge of the first elastic pad 12, and the bottom surface of the rigid pad 10 is located above the top surface of the horizontal transverse blocking blocks 1310 and the horizontal longitudinal blocking blocks 1311. The rigid pad 10, the insert rod 11, the first elastic pad 12, and the insulating buffer plate 13 are mounted on the upper surface of the track slab b via the first connector 14. The upper surface of the rigid pad 10 has a recessed pressure hole, which is concentrically arranged with the boss 110. An insulating sleeve 18 is embedded in the pressure hole, and a pressure cap 19 is provided on the upper surface of the insulating sleeve 18. The pressure cap 19, insulating sleeve 18, rigid pad 10, insert rod 11, first elastic pad 12, and insulating buffer plate 13 pass through the first mounting hole, which is coaxially arranged with the boss 110. The first connector 14 passes through the first mounting hole from top to bottom and is threaded into the second mounting hole on the track slab b. Generally, the most common first connector 14 on the market is preferably an anchor bolt. By setting the insulating sleeve 18 and the pressure cap 19, the tightening force of the anchor bolt is prevented from being directly applied to the rigid pad 10. This not only avoids the elastic loss caused by the initial pre-compression of the first elastic pad 12, but also ensures good vertical stiffness consistency of the system and guarantees the vibration reduction effect.

[0044] See Figures 1 to 6 The rigid pad 10 has a rail body a mounted on its upper surface, and a second elastic pad 20 mounted on its bottom surface. A limit stop 201 is provided along the wide side of the second elastic pad 20, and the limit stop 201 has a recessed groove 202. The groove 202 and the locking block along the long side of the rail body a form a locking engagement. The rail body a is mounted on the upper surface of the rigid pad 10 via the second elastic pad 20. An elastic strip 15 is pressed against the rail body a and the rigid pad 10 via a second connector 17. The static stiffness threshold of the second elastic pad 20 is greater than that of the first elastic pad 12. Gauge blocks 16 are provided on both sides of the rail body a. A set of mounting blocks 102 are diagonally arranged on both sides of the upper surface of the rigid pad 10. The 2 and the insulating sleeve 18 are staggered from each other. A gap is set between adjacent mounting blocks 102, and mounting grooves 1020 are opened on the bottom side of the adjacent mounting blocks 102. The mounting grooves 1020 are engaged with the screw heads of T-bolts 170. T-bolts 170 engage with nuts 171. The spring strip 15 is pressed onto the gauge block 16 and the rigid pad 10 through nuts 171. The T-bolts 170 and nuts 171 together constitute the second connecting member 17, which is engaged with the screw heads of T-bolts 170 through mounting grooves 1020. This replaces the existing technology of installing by rotating through the anti-rotation hole of the rigid pad 10 using T-bolts, which reduces the length requirement of T-bolts and reduces the tendency of T-bolts to be damaged.

[0045] In this embodiment, the first elastic pad 12 and the rigid pad 10 are engaged by a locking rod 11, restricting the horizontal sliding freedom of the first elastic pad 12 and the rigid pad 10. Furthermore, the first elastic pad 12 is fitted into the insulating buffer plate 13 until the bottom surface of the rigid pad 10 contacts the top surface of the insulating buffer plate 13, further restricting the horizontal sliding freedom of the rigid pad 10 and the insulating buffer plate 13. Because the rigid pad 10 and the first elastic pad 12 are installed in a rigid-on-top, flexible-on-bottom configuration, while ensuring good vibration damping performance of the vibration damping fastener, the installation avoids contact between the rigid pad 10 and the first elastic pad 12 when the vibration damping fastener is subjected to a large lateral force. 2. Slippage occurs between the first elastic pad 12 and the insulating buffer plate 13, resulting in high overall stability of the vibration damping fastener. On this basis, the static stiffness threshold of the second elastic pad 20 is set to be greater than that of the first elastic pad 12. Through the elastic distribution method of the second elastic pad 20 and the first elastic pad 12, which are hard on the top and soft on the bottom, the static stiffness of the second elastic pad 20 can be increased, which can effectively improve the overturning coefficient of the vibration damping fastener, ensure the stability of the rail body, and improve the stress state of the elastic strip 15. Combined with reducing the static stiffness of the first elastic pad 12, the vibration damping fastener can still obtain good vibration damping performance and improve the overall stability of the vibration damping fastener.

[0046] Example 2

[0047] This embodiment, based on previous embodiments, provides a specific application scenario for the elastic distribution of the first elastic pad 12 and the second elastic pad 20 in an anti-offset vibration damping fastener. In fact, conventional vibration damping fasteners use a method of evenly distributing the elastic pads under the rail and under the slab. The static stiffness of the rail-under elastic pad is generally set to 40kN / mm, which is relatively low. The rail itself has poor stability, and the stress state of key components such as the elastic clips is unfavorable. The rail-under elastic pad is analogous to the second elastic pad 20, and the slab-under elastic pad is analogous to the first elastic pad 12.

[0048] This vibration damping fastener, while ensuring vibration damping performance, adopts an "upper hard, lower soft" elastic distribution method for the second elastic pad 20 and the first elastic pad 12. It is important to note that the "upper hard, lower soft" principle is relative; that is, the second elastic pad 20 has a relatively higher static stiffness. Essentially, both the second elastic pad 20 and the first elastic pad 12 still contribute to the overall vibration damping effect of the fastener. The second elastic pad 20 preferably has a static stiffness ≥300kN / mm, with a preferred cleavage range of 20kN to 70kN. The first elastic pad 12 preferably has a static stiffness of 12kN / mm to 20kN / mm, with a preferred cleavage range of 10kN to 60kN. The lower static stiffness of the first elastic pad 12 ensures good vibration damping performance of this fastener. Meanwhile, without changing the type and size of the first elastic pad 12, by appropriately increasing the design static stiffness of the first elastic pad 12 through changes in the production process, this vibration damping fastener is also suitable for subway mainline sections. Increasing the static stiffness of the second elastic pad 20 can effectively improve the overturning resistance coefficient of this vibration damping fastener, ensure the stability of the rail body a, and improve the stress state of the elastic strip 15 on the rail body a.

[0049] The horizontal transverse blocking block 1310 and the horizontal longitudinal blocking block 1311 preferably have a stiffness of 1000 kN / mm. Four horizontal transverse blocking blocks 1310 are preferably provided, placed at the four corners of the insulating buffer pad 130. Two horizontal longitudinal blocking blocks 1311 are preferably placed at the middle of the long side of the insulating buffer pad 130. During normal installation, the horizontal transverse blocking blocks 1310 and the horizontal longitudinal blocking blocks 1311 are approximately 3 mm away from the lower surface of the rigid pad 10. When the displacement of the vibration damping fastener is too large, the rigid pad 10 contacts the horizontal transverse blocking blocks 1310 and the horizontal longitudinal blocking blocks 1311, thus increasing the stiffness of the vibration damping fastener joint.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fastener for resisting displacement and damping vibration, characterized in that, It includes a rigid pad (10), a locking rod (11) and a first elastic pad (12) arranged from top to bottom. The first elastic pad (12) and the rigid pad (10) are engaged by the locking rod (11) to restrict the sliding of the first elastic pad (12) and the rigid pad (10) in the horizontal direction. It also includes an insulating buffer plate (13) and a first connector (14). The first elastic pad (12) is fitted inside the insulating buffer plate (13). The bottom surface of the rigid pad (10) is located above the top surface of the insulating buffer plate (13). The rigid pad (10), the insert rod (11), the first elastic pad (12) and the insulating buffer plate (13) are installed on the upper surface of the track plate (b) through the first connector (14). It also includes a spring clip (15), a second elastic pad (20), and a second connector (17). The rail body (a) is mounted on the upper surface of the rigid pad (10) through the second elastic pad (20). The spring clip (15) is pressed against the rail body (a) and the rigid pad (10) through the second connector (17). The static stiffness threshold of the second elastic pad (20) is greater than the static stiffness threshold of the first elastic pad (12).

2. The anti-displacement vibration damping fastener according to claim 1, characterized in that, The insulating buffer plate (13) includes an insulating buffer pad (130) and a first blocking block (131). The first blocking block (131) protrudes from the outer edge of the upper surface of the insulating buffer pad (130). The first blocking block (131) is perpendicular to the surface of the insulating buffer pad (130). The first blocking block (131) and the insulating buffer pad (130) enclose a space. A first elastic pad (12) is embedded in the space. The bottom surface of the rigid pad (10) is located above the first blocking block (131).

3. The anti-displacement vibration damping fastener according to claim 2, characterized in that, The first blocking block (131) includes a horizontal transverse blocking block (1310) and a horizontal longitudinal blocking block (1311). One or more horizontal transverse blocking blocks (1310) are provided on the wide side of the upper surface of the insulating buffer pad (130), and one or more horizontal longitudinal blocking blocks (1311) are provided on the long side of the upper surface of the insulating buffer pad (130). The first elastic pad (12) is placed from top to bottom to fit against the upper surface of the insulating buffer pad (130), until the horizontal transverse block (1310) and the horizontal longitudinal block (1311) are fitted into the first blocking grooves corresponding to the outer edge of the first elastic pad (12), and the bottom surface of the rigid pad (10) is located above the top surface of the horizontal transverse block (1310) and the horizontal longitudinal block (1311).

4. The anti-displacement vibration damping fastener according to claim 1, characterized in that, The first elastic pad (12) and the rigid pad (10) have grooves on their adjacent surfaces that fit together. A rod (11) is engaged in the groove, and the outline of the rod (11) is adapted to the groove.

5. The anti-displacement vibration damping fastener according to claim 4, characterized in that, The upper surface of the insert rod (11) has a protruding second blocking block (111) at the wide edge, which forms a plug-in fit with the second blocking groove (101) recessed on the lower surface of the rigid pad (10).

6. The anti-displacement vibration damping fastener according to claim 4, characterized in that, The insert rod (11) has an "8" shaped cross section and the upper surface of the insert rod (11) is provided with diagonal bosses (110) on both sides. The bosses (110) and the recessed holes (100) that penetrate the surface of the rigid pad (10) form a plug-in fit.

7. The anti-displacement vibration damping fastener according to claim 1, characterized in that, It also includes gauge blocks (16), with gauge blocks (16) set on both sides of the rail body (a); a set of mounting blocks (102) are set diagonally on both sides of the upper surface of the rigid pad (10), the mounting blocks (102) and the insulating sleeve (18) are staggered from each other, a gap is set between adjacent mounting blocks (102), and mounting grooves (1020) are opened on the bottom side of the adjacent mounting blocks (102), the mounting grooves (1020) are engaged with the screw heads of T-bolts (170), the T-bolts (170) engage with nuts (171), and the elastic strip (15) is pressed onto the gauge blocks (16) and the rigid pad (10) through the nuts (171). The T-bolts (170) and nuts (171) together constitute the second connecting member (17).

8. The anti-displacement vibration damping fastener according to claim 1, characterized in that, It also includes an insulating sleeve (18) and a pressure cap (19). The upper surface of the rigid pad (10) is recessed with a pressure hole. The pressure hole is concentrically arranged with the boss (110). The insulating sleeve (18) is embedded in the pressure hole. The pressure cap (19) is provided on the upper surface of the insulating sleeve (18). The pressure cap (19), the insulating sleeve (18), the rigid pad (10), the insert rod (11), the first elastic pad (12) and the insulating buffer plate (13) pass through the first mounting hole. The first mounting hole is coaxially arranged with the boss (110). The first connecting piece (14) passes through the first mounting hole from top to bottom and is threadedly engaged with the second mounting hole on the track plate (b).

9. The anti-displacement vibration damping fastener according to claim 1, characterized in that, It also includes a limiting sleeve (21), which is located between the second blocking block (111) and the second blocking groove (101).

10. The anti-displacement vibration damping fastener according to claim 1, characterized in that, A second elastic pad (20) is provided on the bottom surface of the rail body (a). A limit block (201) is provided on the wide side of the second elastic pad (20). The limit block (201) has a recessed groove (202). The groove (202) and the block provided on the long side of the rail body (a) form a snap-fit ​​engagement.

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