Nested damping fastener

Abstract

The utility model relates to a nested damping fastener, including sleeper, press plate, steel rail and fixing bolt, the sleeper, press plate and steel rail are provided with the fixing mechanism that is used for fixing steel rail, the fixing mechanism includes the mounting groove that is provided in the sleeper surface, the lower surface of the mounting groove inner cavity is fixedly equipped with the rubber pad, and the rubber pad is fixed on the mounting groove inner cavity. A fixing pin is fixedly installed on the lower surface of the pressing plate, a spring is fixedly installed on the surface of the fixing pin, a connecting mechanism and a limiting mechanism are arranged between the pressing plate and the sleeper, and a circular groove is formed in the surface of the steel rail. According to the nested vibration reduction fastener, the fixing groove is formed in the steel rail, the fixing pin is arranged on the pressing plate, when the nested vibration reduction fastener is used, the fixing pin can be clamped into the fixing groove, then the pressing plate is fixed to a sleeper, the steel rail can be fixed, meanwhile, the rubber pad is arranged in the mounting groove, the rubber column is arranged on the pressing plate, and the spring is arranged on the fixing pin; and vibration transmitted to the pressing plate by the steel rail can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a nested vibration-damping fastener. Background Art

[0002] The track nested vibration-damping fastener is a vibration-damping device specially used in railway track systems. It usually consists of two parts, an internal part and an external part. The internal part can be embedded in the external part to achieve better vibration-damping effect. This vibration-damping fastener is usually made of rubber or other elastic materials. The internal part can provide certain buffering and shock-absorbing effects, and the external part can provide better fixation and support. When the train passes through the railway track, the track nested vibration-damping fastener can absorb part of the vibration energy and reduce the vibration transmission to the surrounding environment, thereby reducing noise and protecting the stability of the track system. This vibration-damping fastener usually has the characteristics of wear resistance, durability, and aging resistance. It can effectively improve the vibration and noise problems of the railway track system and improve the comfort and safety of train operation. It has important application value in the field of railway transportation and plays an important role in ensuring the smooth and safe operation of trains.

[0003] Chinese patent CN218059725U discloses a nested vibration-damping fastener, which belongs to the field of track vibration reduction technology. The fastener comprises a sub-iron pad, a mother iron pad, an insulating buffer ring, an elastic pad under the plate, an insulating buffer pad, an elastic pad under the rail, a spring bar, and a gauge block. The elastic pad under the plate and the sub-iron pad are stacked and nested in the mother iron pad in sequence. The elastic pad under the plate is located below the sub-iron pad. There are two insulating buffer rings, which are respectively located in the gaps between the sub-iron pad, the mother iron pad and the elastic pad under the plate. The insulating buffer ring has a heightening structure in the vertical direction. The fastener is suitable for "ω"-shaped spring bars, the sub-iron pad and the mother iron pad adopt a nested structure, and the insulating buffer ring is provided with two, which are respectively nested between the sub-iron pad and the mother iron pad, which saves materials, reduces costs, and is easy to install and disassemble. The heightening structure can also resist the lateral force transmitted by the rail, improve the anti-lateral stability of the fastener system, and improve the driving safety of the train. The split-inlaid combined elastic pad under the plate is adopted to meet the different requirements of the line for static stiffness.

[0004] The above patent improves the shortcomings of the existing fastener insulation buffer nesting ring that is easy to wear and the overall lateral stability of the fastener is low. However, the vibration-damping fastener in the patent uses spring bars to fix the rails. Although it can reduce the impact of rail vibration on the bolts, the spring bars only contact the surface of the rail and cannot be embedded in the interior of the rail, resulting in poor fixing effect on the rail. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a nested vibration-damping fastener, which has the advantage of good fixing effect and solves the problem that the existing vibration-damping fasteners use spring bars to fix the rails. Although the influence of rail vibration on the bolts can be reduced, the spring bars only contact the surface of the rails and cannot be embedded in the interior of the rails, resulting in poor fixing effect on the rails.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nested vibration-damping fastener, comprising a sleeper, a pressure plate, a rail and a fixing bolt, wherein the sleeper, the pressure plate and the rail are provided with a fixing mechanism for fixing the rail;

[0007] The fixing mechanism includes a mounting groove opened on the surface of the sleeper, a rubber pad is fixedly installed on the lower surface of the inner cavity of the mounting groove, a fixing pin is fixedly installed on the lower surface of the pressure plate, a spring is fixedly installed on the surface of the fixing pin, a connecting mechanism and a limiting mechanism are provided between the pressure plate and the sleeper, a circular groove is opened on the surface of the rail, a fixing groove is opened on the lower surface of the inner cavity of the circular groove, and a protective mechanism for preventing the fixing bolts from rusting is provided on the surface of the pressure plate.

[0008] Furthermore, the connection mechanism comprises a first threaded hole formed on the surface of the pressure plate, and a second threaded hole is formed on the surface of the sleeper, and both the first threaded hole and the second threaded hole are adapted to be fitted with fixing bolts.

[0009] Furthermore, a rubber column is fixedly installed on the lower surface of the pressure plate, and a circular hole is opened on the surface of the rubber column. The circular hole corresponds to the first threaded hole and the second threaded hole, and the inner diameter of the circular hole is larger than the diameter of the fixing bolt.

[0010] Furthermore, the limiting mechanism comprises two limiting holes opened on the surface of the sleeper, and two limiting rods are fixedly mounted on the lower surface of the pressure plate, and the limiting rods are adapted to the limiting holes.

[0011] Furthermore, the protection mechanism includes a fixed block fixedly mounted on the upper surface of the pressure plate, a connecting belt fixedly mounted on the surface of the fixed block, a rubber sleeve fixedly mounted on one end of the connecting belt away from the fixed block, and the rubber sleeve is adapted to the top of the fixing bolt.

[0012] Furthermore, the width of the mounting groove is adapted to the bottom width of the rail.

[0013] Furthermore, the width of the rubber pad matches the width of the mounting groove, and the thickness of the rubber pad is smaller than the depth of the mounting groove.

[0014] Furthermore, the fixing groove is matched with the fixing pin, and the spring is matched with the circular groove.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The nested vibration-damping fastener has a fixing groove on the rail and a fixing pin on the pressure plate. When in use, a fixing pin can be inserted into the fixing groove, and then the pressure plate is fixed to the sleeper, so that the rail can be fixed. At the same time, a rubber pad is provided in the installation groove, a rubber column is provided on the pressure plate, and a spring is provided on the fixing pin, which can reduce the vibration transmitted from the rail to the pressure plate, and solves the problem that the existing vibration-damping fastener uses spring bars to fix the rail. Although it can reduce the influence of the rail vibration on the bolt, the spring bar only contacts the surface of the rail and cannot be embedded in the rail, resulting in a poor fixing effect on the rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0020] Figure 4 It is a schematic diagram of the structural pressure plate of the utility model.

[0021] In the figure: 1. sleeper; 2. pressure plate; 3. rail; 4. fixing bolt; 5. mounting groove; 6. rubber pad; 7. fixing pin; 8. spring; 9. round groove; 10. fixing groove; 11. first threaded hole; 12. second threaded hole; 13. rubber column; 14. round hole; 15. limiting hole; 16. limiting rod; 17. fixing block; 18. connecting belt; 19. rubber sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] For example, see Figure 1-4A nested vibration-damping fastener in this embodiment comprises a sleeper 1, a pressure plate 2, a rail 3 and a fixing bolt 4. The sleeper 1, the pressure plate 2 and the rail 3 are provided with a fixing mechanism for fixing the rail. The fixing mechanism comprises a mounting groove 5 opened on the surface of the sleeper 1. The width of the mounting groove 5 matches the bottom width of the rail 3, so that the rail 3 can be placed in the mounting groove 5. A rubber pad 6 is fixedly installed on the lower surface of the inner cavity of the mounting groove 5. The width of the rubber pad 6 matches the width of the mounting groove 5. The thickness of the rubber pad 6 is less than the depth of the mounting groove 5, so that the rubber pad 6 can be fixed in the mounting groove 5. A fixing pin 7 is fixedly installed on the lower surface of the pressure plate 2. A spring 8 is fixedly installed on the surface of the fixing pin 7. A connecting mechanism and a limiting mechanism are provided between the pressure plate 2 and the sleeper 1. The connecting mechanism comprises a first threaded hole 11 opened on the surface of the pressure plate 2. A second threaded hole 12 is provided on the surface, and the first threaded hole 11 and the second threaded hole 12 are both compatible with the fixing bolt 4. The pressure plate 2 can be fixed on the sleeper 1 by setting a connecting mechanism. A rubber column 13 is fixedly installed on the lower surface of the pressure plate 2. A circular hole 14 is provided on the surface of the rubber column 13. The circular hole 14 corresponds to the first threaded hole 11 and the second threaded hole 12. The inner diameter of the circular hole 14 is larger than the diameter of the fixing bolt 4. The rubber column 13 is provided to provide a vibration reduction space between the pressure plate 2 and the sleeper 1, which is beneficial to reduce the vibration transmitted from the sleeper 1 to the pressure plate 2. The limiting mechanism includes two limiting holes 15 opened on the surface of the sleeper 1, and two limiting rods 16 are fixedly installed on the lower surface of the pressure plate 2. The limiting rods 16 are compatible with the limiting holes 15, which are convenient for limiting the pressure plate 2 and can prevent the pressure plate 2 from rotating on the sleeper 1.

[0024] A circular groove 9 is provided on the surface of the rail 3, and a fixing groove 10 is provided on the lower surface of the inner cavity of the circular groove 9. A protective mechanism for preventing the fixing bolts 4 from rusting is provided on the surface of the pressing plate 2. The protective mechanism includes a fixing block 17 fixedly installed on the upper surface of the pressing plate 2, and a connecting belt 18 is fixedly installed on the surface of the fixing block 17. A rubber sleeve 19 is fixedly installed on one end of the connecting belt 18 away from the fixing block 17. The rubber sleeve 19 is matched with the top of the fixing bolt 4, so that the rubber sleeve 19 can be put on the fixing bolt 4 to protect the fixing bolt 4.

[0025] The working principle of the above embodiment is:

[0026] When in use, the two limiting rods 16 on the pressing plate 2 are inserted into the limiting holes 15 on the sleeper 1, so that the first threaded hole 11 on the pressing plate 2 corresponds to the second threaded hole 12 on the sleeper 1. At this time, the round hole 14 on the rubber column 13 corresponds to the first threaded hole 11 and the second threaded hole 12 respectively. At this time, the fixing pin 7 is inserted into the fixing groove 10, and the spring 8 is located in the round groove 9. Then the fixing bolt 4 is inserted into the first threaded hole 11, the second threaded hole 12 and the round hole 14, and the pressing plate 2 can be fixed on the sleeper 1, and then the rail 3 can be fixed in the installation groove 5. At this time, the bottom of the rail 3 is in close contact with the surface of the rubber pad 6

[0027] Embodiment 2, on the basis of embodiment 1, the fixing groove 10 is matched with the fixing pin 7 , and the spring 8 is matched with the circular groove 9 , so that the fixing pin 7 can be inserted into the fixing groove 10 and the spring 8 can be inserted into the circular groove 9 .

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nested vibration-damping fastener, comprising a sleeper (1), a pressure plate (2), a rail (3) and a fixing bolt (4), characterized in that: The sleeper (1), the pressure plate (2) and the rail (3) are provided with a fixing mechanism for fixing the rail; The fixing mechanism comprises a mounting groove (5) formed on the surface of the sleeper (1), a rubber pad (6) being fixedly mounted on the lower surface of the inner cavity of the mounting groove (5), a fixing pin (7) being fixedly mounted on the lower surface of the pressure plate (2), a spring (8) being fixedly mounted on the surface of the fixing pin (7), a connecting mechanism and a limiting mechanism being arranged between the pressure plate (2) and the sleeper (1), a circular groove (9) being formed on the surface of the steel rail (3), a fixing groove (10) being formed on the lower surface of the inner cavity of the circular groove (9), and a protective mechanism for preventing the fixing bolts (4) from rusting being arranged on the surface of the pressure plate (2).

2. A nested vibration-damping fastener according to claim 1, characterized in that: The connection mechanism comprises a first threaded hole (11) formed on the surface of the pressure plate (2), and a second threaded hole (12) formed on the surface of the sleeper (1), wherein both the first threaded hole (11) and the second threaded hole (12) are compatible with the fixing bolt (4).

3. A nested vibration-damping fastener according to claim 2, characterized in that: A rubber column (13) is fixedly installed on the lower surface of the pressure plate (2), and a circular hole (14) is opened on the surface of the rubber column (13). The circular hole (14) corresponds to the first threaded hole (11) and the second threaded hole (12), and the inner diameter of the circular hole (14) is larger than the diameter of the fixing bolt (4).

4. The nested vibration-damping fastener according to claim 1, characterized in that: The limiting mechanism comprises two limiting holes (15) opened on the surface of the sleeper (1), and two limiting rods (16) are fixedly mounted on the lower surface of the pressing plate (2), and the limiting rods (16) are adapted to the limiting holes (15).

5. The nested vibration-damping fastener according to claim 1, characterized in that: The protective mechanism comprises a fixing block (17) fixedly mounted on the upper surface of the pressure plate (2), a connecting belt (18) fixedly mounted on the surface of the fixing block (17), a rubber sleeve (19) fixedly mounted on one end of the connecting belt (18) away from the fixing block (17), and the rubber sleeve (19) is adapted to fit the top of the fixing bolt (4).

6. The nested vibration-damping fastener according to claim 1, characterized in that: The width of the installation groove (5) is adapted to the bottom width of the rail (3).

7. The nested vibration-damping fastener according to claim 1, characterized in that: The width of the rubber pad (6) matches the width of the mounting groove (5), and the thickness of the rubber pad (6) is smaller than the depth of the mounting groove (5).

8. The nested vibration-damping fastener according to claim 1, characterized in that: The fixing groove (10) is matched with the fixing pin (7), and the spring (8) is matched with the circular groove (9).

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