Vibration reduction fastener system capable of resisting transverse torsion
On the basis of the rail elastic strips compressing the hard-head rail strips, a rigid plate under the rail, a buffer layer between the plates and a rigid plate on the sleeper are provided, and buffer plate groups are set at both ends of the sleeper extension direction, which solves the problem of existing vibration-absorbing buckles. It solves the problems of parts wear and poor overturning resistance, extends the service life and improves the torsion resistance.
Patent Information
- Application Number
- CN202421070904.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing vibration-absorbing fasteners have worn out the self-locking structure and anchor bolts after long-term operation, resulting in assembly gaps and lateral shear breaks, poor anti-capsulation ability, and affecting the normal driving of the train.
With the help of track elastic strips, the hard-head rail strips are pressed onto the sleepers. A rigid plate under the rail, a buffer layer between the plates and a rigid plate on the sleeper are set up. Buffer plate groups are set at both ends of the sleeper extension direction, including two rigid plates. The buffer plate and an elastic buffer plate realize buffer contact between the fastener components through the buffer plate set.
It extends the service life of the limit mechanisms at both ends of the sleeper, improves the anti-torsion performance of the rail, reduces frictional resistance, and ensures the normal running of the train.
Smart Images
Figure CN222375102U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of rail transportation, and in particular relates to a vibration-damping fastener system that resists lateral torsion. Background Art
[0002] The perfect network of urban rail transit provides people with a fast, safe and green way of travel. However, as the rail transit network continues to mature, whether it is underground or elevated lines, when trains pass, the vibration and noise caused by the impact between wheels and rails have a great impact on the buildings along the line or the work and life of the surrounding residents. In order to suppress the vibration and noise of wheels and rails from spreading to the surroundings, vibration-damping fasteners are the simplest and most cost-effective measure to reduce line vibration and noise.
[0003] The common double-layer nonlinear vibration-damping fasteners are composed of an upper iron plate, a sandwich elastic pad and a lower iron plate. After long-term operation, the self-locking structure and anchor bolts of the fasteners are worn, resulting in gaps in the assembly of the self-locking mechanism and the upper and lower iron plates. In severe cases, the bolts will suffer from transverse shear fractures. At the same time, in the small-radius curve sections of the line, the anti-overturning ability of the double non-vibration-damping fasteners is poor, resulting in the expansion of the dynamic track gauge of the line and the continuous development of rail wear, which cannot guarantee the normal operation of the train.
[0004] At present, as a countermeasure to the above, vibration-damping fasteners with lateral limiting structures have appeared on the market. By setting limiting structures at both ends of the fasteners along the extension direction of the sleeper, the self-locking function of the fastener components is enhanced and the tendency of assembly gaps is reduced. However, due to the high-frequency vibration and friction between the upper / lower iron plates and the limiting structure during the operation of the rail train, the above-mentioned limiting structure is severely worn and fails after a period of use, which affects the anti-torsion performance of the rail. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a vibration-damping fastener system that resists lateral torsion. By arranging buffer plate groups at both ends along the extension direction of the sleeper, buffer contact is achieved between the fastener components, thereby greatly extending the service life of the limiting mechanisms at both ends of the sleeper, that is, greatly improving the torsion resistance of the rails.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A vibration-damping fastener system that resists lateral torsion, which presses a hard-head rail onto a sleeper through a rail spring bar, and takes the direction from the hard-head rail to the sleeper vertically as the direction of rail drop, and is characterized in that it comprises: a rail-under-rail rigid plate, an inter-plate buffer layer, and an upper-sleeper rigid plate, which are sequentially stacked along the rail drop direction and arranged between the hard-head rail and the sleeper, wherein the upper end surface of the rail-under-rail rigid plate has a fixing hole for fixing one end of the rail spring bar, the upper end surface of the upper-sleeper rigid plate is used as the upper end surface of the plate, the upper end surface of the plate is formed by drawing a shell along the rail drop direction to form an open first limiting cavity, the two ends of the upper-sleeper rigid plate in the direction of the sleeper extension length are used as the plate side ends, and the inter-plate buffer layer is laid in cooperation with It is arranged in the first limiting cavity, and the side ends of the two plates both have vertically extending side baffle parts. The side baffle parts are formed into an open second limiting cavity by withdrawing the shell along the extending length direction of the sleeper. The second limiting cavity is connected with the first limiting cavity, and the bottom surface of the second limiting cavity is formed with a pin rod part along the extending length direction of the sleeper. The anti-lateral torsion vibration damping fastener system also includes a buffer plate group laid in the second limiting cavity. In the extending length direction of the sleeper, the buffer plate group includes two rigid buffer plates and an elastic buffer plate. The two rigid buffer plates respectively abut against the bottom of the second limiting cavity, the side of the rigid plate under the rail, and the elastic buffer plate is arranged between the two rigid buffer plates.
[0008] Preferably, the surface of the rigid buffer plate abutting against the side surface of the rigid plate under the rail is a concave-convex structure, and the top of the protrusion abuts against the side surface of the rigid plate under the rail.
[0009] Preferably, the upper and lower surfaces of the inter-plate buffer layer have a plurality of densely distributed buffer bulges, the tops of the buffer bulges respectively abut against the bottom surface of the rigid plate under the rail and the bottom surface of the first limiting cavity, a rigid buffer plate and an elastic buffer plate are completely located inside the second limiting cavity, and the surface of the rigid buffer plate in contact with the rigid plate under the rail has a plurality of contact ridges along the extension direction of the hard head rail, the number of the contact ridges is multiple and parallel to each other, and the contact ridges have a convex arc surface, so that the surfaces of the rigid plate under the rail and the rigid buffer plate form a linear contact.
[0010] Preferably, the upper end surface of the rigid plate under the rail has a fixing portion, the fixing portion is formed with connected fixing holes and drainage holes, the buffer layer between the plates has a water-passing hole, and the rigid plate on the pillow has a water-leakage hole, and the drainage hole, the water-passing hole and the water-leakage hole are connected in sequence.
[0011] Furthermore, the bottom surface of the first limiting cavity has a first intra-cavity boss extending toward the inter-plate buffer layer, the first intra-cavity boss passes through the water through hole, and the water leakage through hole is formed on the first intra-cavity boss.
[0012] Preferably, the rigid plate under the rail has an upper combining through hole, the buffer layer between the plates has a combining through hole, and the rigid plate on the pillow has a lower combining through hole. The upper combining through hole, the combining through hole and the lower combining through hole are connected by bolts, so that the rigid plate under the rail, the buffer layer between the plates and the rigid plate on the pillow are connected.
[0013] Furthermore, the bottom surface of the first limiting cavity has a second cavity boss extending toward the inter-plate buffer layer, the second cavity boss passes through the combining via and extends into the channel of the upper combining through hole, and the lower combining through hole is formed on the second cavity boss.
[0014] Furthermore, the utility model also includes an adjustable coupling assembly, including an adjustable coupling plate and a coupling ring sleeve, the bolt connection passes through the coupling ring sleeve and the adjustable coupling plate in sequence, the inner circumferential surface of the coupling ring sleeve is formed with a coupling reference protrusion, the upper and lower surfaces of the coupling reference protrusion form radially extending step surfaces relative to the inner surface of the coupling ring sleeve, respectively serving as an upper reference step surface and a lower reference step surface, the coupling ring sleeve is inserted into the upper combining through hole, and the bottom of the adjustable coupling plate abuts on the upper end surface of the coupling ring sleeve, and the bottom of the adjustable coupling plate has a coupling rack extending along the extension length direction of the sleeper, the outer circumferential surface of the boss in the second cavity is formed with a radially extending cut-off step, the cut-off step abuts against the lower reference step surface, and the top surface of the boss in the second cavity has a top rack meshing with the coupling rack.
[0015] Furthermore, the inner surface of the coupling ring sleeve is also formed with a radially extending inner hole step, and the coupling reference protrusion is formed on the inner wall of the smaller inner diameter channel section formed by the inner hole step.
[0016] Furthermore, a first straight groove is formed on the upper step surface of the step in the hole, the top surface of the boss in the second cavity has a second straight groove that cuts off the tooth shape of the top rack, and the bottom of the adjustable coupling plate has a guide protrusion that cuts off the tooth shape of the coupling rack. The first straight groove and the second straight groove are connected in radial correspondence along the upper combining through hole to form a lower half groove; the guide protrusion is matched with the lower half groove in a concave and convex manner.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. Because the anti-lateral torsion vibration-damping fastener system of the utility model comprises a rigid plate under the rail, a buffer layer between the plates and a rigid plate on the pillow, the rigid plate on the pillow has a plate upper end surface and a plate side end, a first limiting cavity is formed on the plate upper end surface, the buffer layer between the plates is cooperatively laid in the first limiting cavity, the plate side end has a vertically extending side baffle portion, the side baffle portion forms a second limiting cavity, the second limiting cavity is connected to the first limiting cavity, and a pin rod portion is formed on the bottom surface of the second limiting cavity, the anti-lateral torsion vibration-damping fastener system also comprises a buffer plate group cooperatively laid in the second limiting cavity, the buffer plate group comprises two rigid buffer plates and an elastic buffer plate, and the two rigid buffer plates respectively abut against the second limiting cavity The bottom of the cavity, the side of the rigid plate under the rail, and the elastic buffer plate are arranged between the two rigid buffer plates, so that when the train is running, the two rigid buffer plates are respectively abutted against the side baffle part and the rigid plate under the rail. After the rigid buffer plate is worn due to vibration and friction, due to the elastic buffer layer, the two rigid buffer plates are still respectively kept in abutment with the side baffle part and the rigid plate under the rail, that is, the fastener components can still have the self-locking function, and no assembly gap will appear. Therefore, the utility model arranges buffer plate groups at both ends along the extension direction of the sleeper, so that the fastener components have buffer contact, thereby greatly extending the service life of the limiting mechanisms at both ends of the sleeper, that is, greatly improving the torsion resistance of the rail.
[0019] 2. Because the surface of the rigid buffer plate of the utility model that abuts against the side of the rigid plate under the rail is a concave-convex structure, and the top of the protrusion abuts against the side of the rigid plate under the rail, the utility model effectively reduces the contact surface between the rigid plate under the rail and the rigid buffer plate by abutting the top of the protrusion against the side of the rigid plate under the rail, thereby reducing the friction resistance generated by the rigid buffer plate to the rigid plate under the rail.
[0020] 3. Because the upper and lower surfaces of the inter-plate buffer layer of the utility model have multiple densely distributed buffer bulges, the tops of the buffer bulges are respectively in contact with the bottom surface of the rigid plate under the rail and the bottom surface of the first limiting cavity, a rigid buffer plate and an elastic buffer plate are completely located inside the second limiting cavity, and the surface of the rigid buffer plate in contact with the rigid plate under the rail has multiple contact ridges along the extension direction of the hard head rail, the number of contact ridges is multiple and parallel to each other, and the contact ridges have convex arc surfaces, so that the surfaces of the rigid plate under the rail and the rigid buffer plate form a line contact, therefore, the utility model provides elastic buffering between the rigid plate under the rail and the rigid plate on the pillow through the buffer bulge, and further reduces the friction resistance generated by the rigid buffer plate to the rigid plate under the rail through the contact ridges.
[0021] 4. Because the utility model also includes an adjustable coupling assembly, the adjustable coupling assembly includes a coupling ring sleeve and an adjustable coupling plate, the bolt connection passes through the adjustable coupling and the plate coupling ring sleeve in sequence, the inner circumferential surface of the coupling ring sleeve is formed with a coupling reference protrusion, the upper and lower surfaces of the coupling reference protrusion are respectively formed with radially extending step surfaces relative to the inner surface of the coupling ring sleeve as the upper and lower reference step surfaces, the coupling ring sleeve is inserted into the upper combining through hole, and the bottom of the adjustable coupling plate abuts on the upper end surface of the coupling ring sleeve, and the bottom of the adjustable coupling plate has a coupling rack extending along the extension length direction of the sleeper, the outer circumferential surface of the boss in the second cavity is formed with a radially extending cut-off step, the cut-off step abuts with the lower reference step surface, and the top surface of the boss in the second cavity has a top rack meshing with the coupling rack, by changing the corresponding meshing positions of the top rack and the coupling rack, the rigid plate below the plate rail can be slightly moved relative to the rigidity on the sleeper, thereby being able to adapt to a variety of rail distances.
[0022] 5. Because a first straight groove is formed on the upper step surface of the step in the hole of the utility model, the top surface of the second cavity boss has a second straight groove that cuts off the tooth shape of the top rack, and the bottom of the adjustable coupling plate has a guide protrusion that cuts off the tooth shape of the coupling rack, the first straight groove and the second straight groove are correspondingly connected along the radial direction of the upper combining through hole, thereby forming a lower half groove; the guide protrusion is matched with the lower half groove in a concave-convex manner, therefore, the cooperation of the guide protrusion and the lower half groove of the utility model realizes the relative position positioning of the top rack and the coupling rack, thereby enabling convenient meshing. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A schematic diagram of a vibration-damping fastener system for resisting lateral torsion according to an embodiment of the utility model;
[0024] Figure 2 for Figure 1 Half-section of
[0025] Figure 3 A schematic diagram of a rigid plate under a rail according to an embodiment of the utility model;
[0026] Figure 4 A schematic diagram of an inter-plate buffer layer according to an embodiment of the present utility model;
[0027] Figure 5 A schematic diagram of a rigid plate on a pillow according to an embodiment of the utility model;
[0028] Figure 6 It is a schematic diagram of a buffer plate group;
[0029] Figure 7 Another form of contact ridge;
[0030] Figure 8 A schematic diagram of a coupling ring sleeve according to an embodiment of the utility model;
[0031] Fig. 9 A schematic diagram of an adjustable coupling plate according to an embodiment of the utility model;
[0032] Fig.10 It is a cross-sectional view of the bolt and the adjustable coupling assembly of the utility model.
[0033] In the figure: 100, anti-lateral torsion damping fastener system, R, hard head rail, S, sleeper, T, rail spring bar, D, sleeper direction, 10, rail under the rigid plate, 11, fixing part, 111, fixing hole, 12, upper joint through hole, 121, bearing step, 20, inter-plate buffer layer, 21, buffer convex hull, 22, water through hole, 23, joint through hole, 30, pillow rigid plate, 30a, first limiting cavity, 31, side baffle part, 31a, second limiting cavity, 311, pin rod part, 32, first cavity boss, 32a, water leakage through hole, 33, second Intracavity boss, 33a, top rack, 33b, second straight groove, 33c, cut-off step, 33d, lower coupling through hole, 40, buffer plate group, 40a, pin hole, 41, rigid buffer plate, 411, contact ridge, 42, elastic buffer plate, 50, adjustable coupling assembly, 51, adjustable coupling plate, 511, coupling rack, 512, guide protrusion, 52, coupling ring sleeve, 521, first abutment step, 522, second abutment step, 523, step in hole, 523a, first straight groove, 523b, coupling reference protrusion, L, coupling bolt. DETAILED DESCRIPTION
[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and the accompanying drawings specifically illustrate the anti-lateral torsion vibration-damping fastener system of the present invention. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention.
[0035] like Figure 1 and Figure 2 As shown, the anti-lateral torsion vibration-damping fastener system 100 in this embodiment presses the hard-head rail R onto the sleeper S through the track spring bar T, and the direction vertically pointing from the hard-head rail T to the sleeper S is used as the rail-dropping direction D. Specifically, the track spring bar T is arranged in the anti-lateral torsion vibration-damping fastener system 100, and one end of the track spring bar T is pressed against the lower end surface of the hard-head rail R by an elastic pressure block (not shown in the drawings), so that the end of the track spring bar T causes the pressure block to press the hard-head rail R onto the sleeper S, and the anti-lateral torsion vibration-damping fastener system 100 is arranged between the hard-head rail R and the sleeper S.
[0036] The anti-lateral torsion vibration-damping fastener system 100 comprises a rail-under-rail rigid plate 10 , an inter-plate buffer layer 20 , an upper-pillar rigid plate 30 , a buffer plate group 40 and an adjustable coupling assembly 50 .
[0037] The rigid plate 10 under the rail, the buffer layer 20 between the plates and the rigid plate 30 on the sleeper are stacked in sequence between the hard head rail R and the sleeper S along the rail dropping direction D. Specifically, the hard head rail R and the rigid plate 10 under the rail are buffered and separated by a gasket under the rail (not shown in the drawings), and the sleeper S and the rigid plate 30 on the sleeper are buffered and separated by a gasket on the sleeper (not shown in the drawings).
[0038] like Figure 3 As shown, the under-rail rigid plate 10 has a fixing portion 11 and an upper combining through hole 12. In this embodiment, the number of the fixing portions 11 is two.
[0039] The fixing portion 11 is located on the upper end surface of the under-rail rigid plate 10 , and the fixing portion 11 has a fixing hole 111 and a drainage hole (not shown in the drawings).
[0040] The fixing hole 111 is used to fix one end of the track spring bar T, that is, the two ends of the track spring bar T are respectively pressed against the hard head rail R and fixed in the fixing hole 111. Specifically, the fixing part 11 has a solid structure protruding relative to the upper surface of the rigid plate 10 under the rail, and the lower surface of the rigid plate 10 under the rail is flat.
[0041] The water leakage through hole is communicated with the fixing hole 111 . Specifically, the water leakage through hole is used to leak the accumulated water in the fixing hole 111 downward.
[0042] Specifically, the combining through hole 12 is a stepped hole with a bearing step 121 inside, and the hole with a larger radius faces the hard head rail R. In this embodiment, the number of the combining through holes 12 is two.
[0043] like Figure 4 As shown, the inter-board buffer layer 20 has a buffer convex bump 21 , a water through hole 22 and a bonding through hole 23 .
[0044] There are multiple buffer bumps 21, which are densely distributed on the upper and lower surfaces of the inter-plate buffer layer 20. The tops of the buffer bumps 21 on the two surfaces are respectively in contact with the rigid plate 10 under the rail and the rigid plate 30 on the pillow. Specifically, the buffer bumps 21 are made of elastic material, which is specifically manifested as elasticity in the direction D of the stiff neck.
[0045] The water through hole 22 and the combining through hole 23 are communicated with the water drain through hole and the upper combining through hole 12 respectively.
[0046] like Figure 5 As shown, the upper pillow rigid plate 30 has a side baffle portion 31 , a first in-cavity boss 32 and a second in-cavity boss 33 .
[0047] The upper end surface of the rigid plate 30 on the sleeper is used as the upper end surface of the plate, and the two ends of the rigid plate 30 on the sleeper in the extending length direction of the sleeper are used as the side end portions of the plate.
[0048] The upper end surface of the plate is shelled along the rail-falling direction D to form an open first limiting cavity 30a, and the inter-plate buffer layer 20 is laid in the first limiting cavity 30a. Specifically, the top of the buffer convex hump 21 abuts against the bottom surface of the first limiting cavity 30a, and the height of the buffer convex hump 21 is greater than or equal to the depth of the first limiting cavity 30a.
[0049] There are two side baffles 31, which are formed at two side ends of the plate, and the side baffles 31 are formed by withdrawing the shell along the extending length direction of the sleeper to form an open second limiting cavity 31a. The second limiting cavity 31a is connected to the first limiting cavity 30a, and the bottom surface of the second limiting cavity 31a is formed with a pin rod portion 311 extending along the extending length direction of the sleeper.
[0050] The first intra-cavity boss 32 is formed on the bottom surface of the first limiting cavity 30a and extends toward the inter-plate buffer layer 20. The first intra-cavity boss 32 cooperates to pass through the water through hole 22. The first intra-cavity boss 32 is formed with a water leakage through hole 32a extending along the stiff neck direction D, and the water leakage through hole, the water through hole 22 and the water leakage through hole 32a are connected in sequence.
[0051] The second intra-cavity boss 33 is formed on the bottom surface of the first limiting cavity 30a and extends toward the inter-plate buffer layer 20. The second intra-cavity boss 33 passes through the combining through hole 23 and extends into the channel of the upper combining through hole 12. The second intra-cavity boss 33 is formed with a lower combining through hole 33d extending along the stiff neck direction D, and the upper combining through hole 12, the combining through hole 23 and the lower combining through hole 33d are connected by combining bolts L, so that the under-rail rigid plate 10, the inter-plate buffer layer 20 and the upper-pillow rigid plate 30 are connected together.
[0052] The second cavity boss 33 is further formed with a top rack 33 a , a second straight groove 33 b and a stop step 33 c .
[0053] The top rack 33a is located on the top surface of the second cavity boss 33 and extends along the extension direction of the sleeper S. The second straight groove 33b extends along the extension direction of the sleeper S and separates the tooth shape of the top rack 33a from the middle. The cut-off step 33c is formed on the outer peripheral surface of the second cavity boss 33 and extends radially.
[0054] like Figure 6 As shown, the buffer plate group 40 is laid in cooperation inside the second limiting cavity 31 a , and in the extending length direction of the sleeper, the buffer plate group 40 includes two rigid buffer plates 41 and an elastic buffer plate 42 .
[0055] The two rigid buffer plates 41 respectively abut against the bottom of the second limiting cavity 31a and the side of the rigid plate 10 under the rail, and the elastic buffer plate is arranged between the two rigid buffer plates. A rigid buffer plate 41 and the elastic buffer plate 42 are completely located inside the second limiting cavity 31a, so that the second limiting cavity 31a forms a shield between the elastic buffer plate 42 and the external environment, thereby avoiding the shortening of the service life of the elastic buffer plate 42 due to the influence of negative environmental factors such as weathering and environmental radiation.
[0056] The surface of the rigid buffer plate 41 abutting against the side of the rigid plate 10 under the rail is a concave-convex structure, and the top of the convexity abuts against the side of the rigid plate 10 under the rail. Specifically, Figure 7 As shown, the surface of the rigid buffer plate 41 in contact with the rigid plate 10 under the rail has a plurality of contact ridges 411 along the extension direction of the hard head rail R. The number of the contact ridges 411 is multiple and they are parallel to each other, and the contact ridges 411 have convex arc surfaces, so that the surfaces of the rigid plate 10 under the rail and the rigid buffer plate 41 form a line contact. In this embodiment, a flat-top contact ridge 411 or an arc-top contact ridge 411 can be used.
[0057] like Figures 8 to 10 As shown, the adjustable coupling assembly 50 includes a coupling ring sleeve 52 and an adjustable coupling plate 51 , and is connected by a bolt L that passes through the adjustable coupling plate 51 and the coupling ring sleeve 52 in sequence.
[0058] The coupling ring sleeve 52 is inserted into the upper combining through hole 12. Specifically, the outer peripheral surface of the coupling ring sleeve 52 forms a first abutting step 521 and a second abutting step 522 extending radially. The first abutting step 521 abuts against the orifice of the upper combining through hole 12, and the second abutting step 522 abuts against the bearing step 121. The adjustable coupling plate 51 abuts against the upper end surface of the coupling ring sleeve 52.
[0059] The inner peripheral surface of the coupling ring sleeve 52 is formed with an inner hole step 523 and a coupling reference protrusion 523 b.
[0060] The inner hole step 523 extends in the radial direction of the coupling ring sleeve 52 , and the coupling reference protrusion 523 b is formed on the inner wall of the smaller inner diameter channel section formed by the inner hole step 523 .
[0061] A first straight groove 523a is formed on the upper step surface of the step 523 in the hole. The first straight groove 523a and the second straight groove 33b are correspondingly connected along the radial direction of the upper connecting through hole to form a lower half groove (not shown in the drawings). Specifically, the step 523 in the hole enables the coupling ring sleeve 52 to have two sections of channels with different radii, and the channel with a larger radius is open upward.
[0062] The upper and lower surfaces of the coupling reference protrusion 523b form radially extending step surfaces relative to the inner surface of the coupling ring sleeve 52, which serve as an upper reference step surface (not shown in the drawings) and a lower reference step surface (not shown in the drawings), respectively.
[0063] The bottom of the adjustable coupling plate 51 abuts against the upper end surface of the coupling ring sleeve 52 , and the bottom of the adjustable coupling plate 51 has a coupling rack 511 and a guide protrusion 512 .
[0064] The coupling rack 511 and the guide protrusion 512 both extend along the extension length direction of the sleeper. The guide protrusion 512 separates the tooth shape of the coupling rack 511 from the middle. The coupling rack 511 is engaged with the top rack 33a, the guide protrusion 512 is engaged with the lower half groove, and the cut-off step 33c is in contact with the lower reference step surface.
[0065] The above-mentioned implementation modes are preferred cases of the present utility model and are not used to limit the protection scope of the present utility model. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.
Claims
1. A vibration-damping fastener system that resists lateral torsion, in which a hard-head rail is pressed against a sleeper by rail spring bars, and the direction from the hard-head rail to the sleeper is used as the direction of the rail drop, characterized in that: include: The rail underside rigid plate, the inter-plate buffer layer and the upper rigid plate are stacked in sequence along the rail drop direction. The upper end surface of the rigid plate under the rail has a fixing hole for fixing one end of the rail spring bar. The upper end surface of the rigid plate on the sleeper is used as the upper end surface of the plate, and the upper end surface of the plate is formed into an open first limiting cavity by drawing a shell along the direction of the rail drop, and the two ends of the rigid plate on the sleeper in the extending length direction of the sleeper are used as the side ends of the plate, and the buffer layer between the plates is laid in the first limiting cavity. The two side ends of the plate each have a vertically extending side baffle portion, which is formed by withdrawing a shell along the extending length direction of the sleeper to form an open second limiting cavity, the second limiting cavity is connected to the first limiting cavity, and the bottom surface of the second limiting cavity is formed with a pin rod portion along the extending length direction of the sleeper, The anti-lateral torsion vibration-damping fastener system also includes a buffer plate group laid in the second limiting cavity. In the extension length direction of the sleeper, the buffer plate group includes two rigid buffer plates and an elastic buffer plate. The two rigid buffer plates are respectively abutted against the bottom of the second limiting cavity and the side of the rigid plate under the rail, and the elastic buffer plate is arranged between the two rigid buffer plates.
2. The anti-lateral torsion damping fastener system according to claim 1, characterized in that: in, The surface of the rigid buffer plate abutting against the side surface of the rigid plate under the rail is a concave-convex structure, and the top of the convexity abuts against the side surface of the rigid plate under the rail.
3. The anti-lateral torsion damping fastener system according to claim 1, characterized in that: in, The upper and lower surfaces of the inter-plate buffer layer are provided with a plurality of densely distributed buffer convex humps, the tops of which are respectively in contact with the bottom surface of the rigid plate under the rail and the bottom surface of the first limiting cavity. The rigid buffer plate and the elastic buffer plate are completely located inside the second limiting cavity, and the surface of the rigid buffer plate in contact with the rigid plate under the rail has a plurality of contact ridges along the extension direction of the hard head rail. The number of the contact ridges is multiple and parallel to each other, and the contact ridges have convex arc surfaces, so that the surfaces of the rigid plate under the rail and the rigid buffer plate form linear contact.
4. The anti-lateral torsion damping fastener system according to claim 1, characterized in that: in, The upper end surface of the rigid plate under the rail has a fixing portion, which is formed with the connecting fixing hole and the drainage hole. The inter-plate buffer layer has a water-passing hole, and the rigid plate on the pillow has a water-leakage hole. The drainage hole, the water-passing hole and the water-leakage hole are connected in sequence.
5. The anti-lateral torsion damping fastener system according to claim 4, characterized in that: in, The bottom surface of the first limiting cavity has a first intra-cavity boss extending toward the inter-plate buffer layer. The first intra-cavity boss passes through the water-passing through hole, and the water-leaking through hole is formed on the first intra-cavity boss.
6. The anti-lateral torsion damping fastener system according to claim 1, characterized in that: in, The rigid plate under the rail has an upper combining through hole, the buffer layer between the plates has a combining through hole, and the rigid plate on the pillow has a lower combining through hole. The upper combining through hole, the combining through hole and the lower combining through hole are connected by bolts, so that the rigid plate under the rail, the buffer layer between the plates and the rigid plate on the pillow are connected.
7. The anti-lateral torsion vibration-damping fastener system according to claim 6, characterized in that: in, The bottom surface of the first limiting cavity has a second intra-cavity boss extending toward the inter-plate buffer layer. The second intra-cavity boss passes through the combining via and extends into the channel of the upper combining through hole. The lower combining through hole is formed on the second intra-cavity boss.
8. The anti-lateral torsion vibration-damping fastener system according to claim 7, characterized in that: Also includes: The adjustable coupling assembly includes a coupling ring and an adjustable coupling plate, wherein a bolt connection passes through the adjustable coupling plate and the coupling ring in sequence. The inner circumference of the coupling ring is formed with a coupling reference protrusion, and the upper and lower surfaces of the coupling reference protrusion form radially extending step surfaces relative to the inner surface of the coupling ring, respectively serving as an upper reference step surface and a lower reference step surface. The coupling ring is inserted into the upper through hole, and the bottom of the adjustable coupling plate abuts against the upper end surface of the coupling ring, and the bottom of the adjustable coupling plate has a coupling rack extending along the extending length direction of the sleeper. A radially extending cut-off step is formed on the outer peripheral surface of the second intra-cavity boss, and the cut-off step abuts against the lower reference step surface. The top surface of the second intra-cavity boss has a top rack meshing with the coupling rack.
9. The anti-lateral torsion vibration-damping fastener system according to claim 8, characterized in that: in, The inner surface of the coupling ring sleeve is also formed with a radially extending inner hole step, and the coupling reference protrusion is formed on the inner wall of the smaller inner diameter channel section formed by the inner hole step.
10. The anti-lateral torsion damping fastener system according to claim 9, characterized in that: in, A first straight groove is formed on the upper step surface of the step in the hole, a second straight groove is formed on the top surface of the boss in the second cavity to separate the tooth shape of the top rack, a guide protrusion is formed on the bottom of the adjustable coupling plate to separate the tooth shape of the coupling rack, the first straight groove and the second straight groove are correspondingly connected along the radial direction of the upper combining through hole to form a lower half groove; the guide protrusion is matched with the lower half groove in a concave and convex manner.