CN209523079U - A vibration damping fastener system - Google Patents

Abstract

It from top to bottom successively include elastic cushion (6), the first backing plate (5), the first elastic layer (4), the second backing plate (3) under rail the utility model discloses the Damping fastening system；The Damping fastening system includes the second elastic layer (2), support column (7), connector sleeve (9) and anchor bolt (12), and second elastic layer (2) is located on the downside of the second backing plate (3)；The support column (7) cooperates with connector sleeve (9) links together the first backing plate (5), the first elastic layer (4), the second backing plate (3) and the second elastic layer (2), and Damping fastening system is fastened on railway roadbed by the anchor bolt (12)；The utility model proposes a kind of high Damping fastening based on compression-type obtains lower vertical stiffness, to reach higher effectiveness in vibration suppression so that elastic layer forms cascade using backing plate and elastic layer interval set-up mode；Meanwhile rail can directly fall within ground, guarantee safety in utilization, receive popularization using market.

Description

A vibration damping fastener system

technical field

The utility model belongs to the field of rail transit and relates to a vibration-damping fastener system.

Background technique

The environmental problem caused by wheel-rail vibration is one of the main problems affecting the development of urban rail transit. Rail dampers, that is, vibration-absorbing fasteners, are one of the main vibration-reducing measures used in the current rail system. Compared with the ballast bed vibration reduction and sleeper vibration reduction measures that need to be placed inside the concrete foundation, the fastener vibration reduction measures have obvious advantages in terms of construction cost, construction convenience, replacement and maintenance.

At present, ordinary damping fasteners and medium damping fasteners have developed rapidly and are widely used. Ordinary damping fasteners usually adopt the form of a single-layer backing plate, which provides elasticity through the elastic pad under the rail and the elastic pad under the board, and the backing plate is fixed on the sleeper or track bed by spikes. The problem with this kind of fastener is that when the actual line is installed, the builder often tightens the spike too tightly to ensure the safety of the line, so that the elastic pad under the plate loses its elasticity, and the vibration damping function is significantly reduced. At the same time, the lateral shear force of the spike is relatively large. big.

The most commonly used medium damping fastener is the double-layer nonlinear vibration-damping fastener, which is composed of a double-layer backing plate and a double-layer elastic pad, which can ensure the full function of the middle elastic pad. At the same time, a coupling plate is set at the bottom of the fastener. Can greatly reduce the lateral shear force of spikes. The same type of medium vibration reduction is the adhesive shear type fastener, which vulcanizes and bonds the two backing plates through the elastic layer. However, the adhesive fastener is very easy to disengage due to the aging of the elastic layer, and the safety is low. In addition, there are various forms such as medium shock-absorbing fasteners and detachment-proof adhesive fasteners.

For the fastener system, the lower its own vertical stiffness, the better the vibration isolation effect. Currently commonly used double-layer backing plate damping fasteners (CN2630303Y, CN205134109U, CN203755094U) and other structures, although also adopt the vibration damping mode that the elastic layer and the backing plate are arranged at intervals, in order to ensure the deformation safety of the elastic strip, the elastic layer under the rail The stiffness usually needs to be above 40kN/mm; and in order to ensure the life of the elastic layer, the stiffness of the middle elastic layer cannot be reduced infinitely (excessive deformation will lead to accelerated aging and fatigue of the elastic layer, and the life cannot meet the requirements). Under the double restrictions, the buckle The structural form of the component can only achieve a moderate vibration damping effect at best.

Restricted by the above reasons, ordinary vibration damping fasteners (vertical stiffness 40-200kN/mm) and medium vibration damping fasteners (15-40KN/mm) can no longer meet the requirements of high vibration reduction (10-15dB). Therefore, rail fasteners with low vertical stiffness have received more and more attention in recent years.

The existing high-grade vibration damping fasteners at home and abroad are only the Pioneer fastener (WO2005009817) produced by the British Pandrol Company, and the floating rail fastener (201110351159.4) of Luoyang Shuangrui Rubber and Plastic Technology Co., Ltd. Both of these two patents adopt the structural form of supporting the rail from the rail waist, so that the rail is suspended above the rail, thereby obtaining lower vertical stiffness. However, this type of fastener needs to be installed online with special tools, and the parts used are difficult to be unified with other fasteners, which is inconvenient for installation and maintenance. In addition, the suspension support method of the rail is visually unsafe in the event of rail breakage. Guaranteed and therefore less accepted in the market.

Through the above analysis, it can be seen that although the commonly used ordinary vibration damping fasteners and medium vibration damping fasteners are widely used and have various structures, they cannot meet the requirements of high-level vibration reduction; while rail suspension support fasteners can achieve high-level vibration reduction , but due to low market acceptance and obvious restrictions on application, high-level or special damping road sections have to adopt ballast bed damping pads, steel spring floating plates and other vibration damping methods with high cost, long construction period, and difficult maintenance and replacement, resulting in many inconvenient.

In view of this, propose the utility model.

Contents of the invention

The purpose of this utility model is to provide a vibration damping fastener system to solve the above problems.

In order to realize the purpose of the invention, the utility model adopts the following technical solutions:

A vibration-damping fastener system, the vibration-damping fastener system sequentially includes an elastic pad under a rail, a first backing plate, a first elastic layer, and a second backing plate from top to bottom; the vibration-damping fastener system includes a first Two elastic layers, support columns, connection sleeves and anchor bolts, the second elastic layer is located at the underside of the second backing plate; the support columns cooperate with the connection sleeve to connect the first backing plate, the first elastic layer, and the second backing plate and the second elastic layer are connected together, and the anchor bolt fastens the vibration-absorbing fastener system on the track bed.

Preferably, the support column includes a cylinder, one end of the cylinder is provided with a bottom plate, and the other end is sleeved with a connecting sleeve; the bottom plate is matched with the second elastic layer, and the connecting sleeve is buckled on the first backing plate .

Preferably, the second backing plate is provided with a fourth through hole, and a support column is installed in the fourth through hole; the shape of the fourth through hole is consistent with the shape of the bottom plate, and the bottom plate can pass through the fourth through hole hole, and after a certain angle of rotation, it is clamped with the second backing plate.

Preferably, the second elastic layer is provided with an eighth through hole, and the inner wall of the eighth through hole close to the end of the second backing plate is provided with a clamping pad, and a seventh through hole is formed between the clamping pads. The seventh through hole corresponds to the fourth through hole on the second backing plate, and has the same shape.

Preferably, the eighth through hole is located on the lower side of the pad to form an accommodation cavity, and the bottom plate on the support column is completely installed in the accommodation cavity.

Preferably, a first positioning protrusion is provided on the surface of the second backing plate adjacent to the first elastic layer; a first positioning hole is provided on the first elastic layer, and the first positioning hole is connected to the first positioning hole. Protrusions match.

Preferably, the second backing plate 3 is provided with a second positioning protrusion on the surface adjacent to the second elastic layer, the second elastic layer is provided with a second positioning hole, and the second positioning hole is connected to the second The second positioning protrusion on the backing plate is matched.

Preferably, the first positioning protrusion and the second positioning protrusion are integrally connected with the second backing plate by welding.

Preferably, both the first positioning protrusion and the second positioning protrusion are square steel blocks.

Preferably, the elastic pad under the rail is provided with an arc portion, and the connecting sleeve is provided with a pinch plate, and the pinch plate is buckled on the first backing plate; the shape of the arc portion is the same as that of the pinch plate of the connecting sleeve. Cooperate.

Beneficial effect

The utility model proposes a new type of high-grade vibration-damping fastener, which does not use the existing suspension support structure, and obtains lower vertical stiffness through the coupling of multiple elastic layers, thereby obtaining good vibration-damping and vibration-isolation effect, while greatly improving line security.

The utility model proposes a high-grade vibration-damping fastener based on the compression type, which adopts the spaced arrangement between the backing plate and the elastic layer, so that the elastic layer forms a series connection, obtains lower vertical stiffness, and thus achieves a higher vibration-damping effect. At the same time, the steel rail can be directly dropped on the ground to ensure the safety of use and be accepted and promoted by the market.

In the utility model, although a layer of elastic layer is added, the installation height will be increased compared with ordinary vibration-damping fasteners, which may cause a decrease in lateral stability, but the fasteners can be eliminated by means of mechanical connection and shoulder blocking. one impact. In addition, the second backing plate in the utility model is made of a steel plate of conventional specifications, and its thickness is much smaller than the backing plate formed by casting. Although an elastic layer is added, the thickness of the second backing plate is reduced, so that the utility model is reduced The height of the vibration-absorbing fastener system is slightly larger than ordinary vibration-absorbing fasteners or multi-layer medium vibration-absorbing fastener systems, so as to ensure the lateral stability of the fastener system. In addition, the number of backing plates and the number of elastic layers are not as many as possible. Considering the installation height requirements of the track, the arrangement of two layers of backing plates and three layers of elastic layers is the maximum series effect that can be achieved while meeting the installation height requirements of the track.

Compared with the traditional fasteners, the utility model has new technical effects. The second backing plate is provided with elastic layers up and down in the vertical direction, so the second backing plate can be used as a mass block, and its vertical and lateral directions have certain rigidity. It can be regarded as a spring-mass system and can be used as a separate resonance system; the second backing plate can be set as a continuous plate according to needs, or it can be divided into discontinuous multiple plates to resonate different frequency bands, fasteners The adaptability of the system is improved. This technical effect is not available in the current common and medium vibration damping fasteners.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the vibration-damping fastener system of the present invention;

Fig. 2 is the sectional view along B-B direction of Fig. 1;

Fig. 3 is a schematic structural view of the support column of the fastener system of the present invention;

Fig. 4 is a structural schematic diagram of the first viewing angle of the connecting sleeve of the fastener system of the present invention;

Fig. 5 is a structural schematic diagram of the second viewing angle of the connecting sleeve of the fastener system of the present invention;

Fig. 6 is a schematic structural view of the under-rail elastic pad of the fastener system of the present invention;

Fig. 7 is a schematic structural view of the first backing plate of the fastener system of the present invention;

Fig. 8 is a schematic structural view of the first elastic layer of the fastener system of the present invention;

Fig. 9 is a schematic structural view of the second backing plate of the fastener system of the present invention;

Fig. 10 is a first perspective schematic diagram of another structure of the second backing plate of the fastener system of the present invention;

Fig. 11 is a second perspective schematic view of another structure of the second backing plate of the fastener system of the present invention;

Fig. 12 is a schematic diagram of a third perspective of another structure of the second backing plate of the fastener system of the present invention;

Fig. 13 is a structural schematic diagram of the first viewing angle of the second elastic layer of the fastener system of the present invention;

Fig. 14 is a structural schematic diagram of the second viewing angle of the second elastic layer of the fastener system of the present invention;

Fig. 15 is a schematic diagram of the working principle of the fastener system of the present invention.

Explanation of reference signs

In order to further clearly illustrate the structure of the utility model and the connection relationship between the components, the following reference signs are given and explained.

Coupling backing plate 1, second elastic layer 2, seventh through hole 2.1, second positioning hole 2.2, eighth through hole 2.3, locking pad 2.4, accommodation cavity 2.5, second backing plate 3, fourth through hole 3.1, second Five through holes 3.2, first positioning protrusion 3.3, second positioning protrusion 3.4, first elastic layer 4, sixth through hole 4.1, first positioning hole 4.2, first backing plate 5, rail connector 5.1, third through hole 5.2, under-rail elastic pad 6, arc portion 6.1, support column 7, first through hole 7.1, column body 7.2, end 7.3, bottom plate 7.4, rail 8, connecting sleeve 9, buckle plate 9.1, sleeve 9.2, lock Tongue 9.3, second through hole 9.4, cover plate 10, washer 11, anchor bolt 12, T-bolt 13, fastening nut 14.

Through the description of the above reference numerals, combined with the embodiments of the utility model, the technical solution of the utility model can be understood and explained more clearly.

Detailed ways

The utility model is described in conjunction with accompanying drawing and specific embodiment:

As shown in Figure 1, a kind of damping fastener system, as shown in Figure 1, described vibration damping fastener system comprises elastic layer and backing plate, and described elastic layer comprises elastic pad 6 under rail, first elastic layer 4 And the second elastic layer 2; the backing plate includes a first backing plate 5 and a second backing plate 3. The elastic layer is made of rubber and polyurethane elastic materials; the backing plate can be produced by metal and non-metallic materials; the hardness and density of the material used for the backing plate are greater than the corresponding properties of the material used for the elastic layer. The under-rail elastic pad 6, the first backing plate 5, the first elastic layer 4, the second backing plate 3, and the second elastic layer 2 are adjacently arranged in sequence from top to bottom, so that the elastic layer and the backing plate are arranged at intervals . A coupling pad 1 is provided on the lower side of the second elastic layer 2 . The first backing plate 5 is provided with a rail connector 5.1 connected to the rail, as shown in Figure 2, the rail connector 5.1 is designed according to the requirements of the line, so as to be suitable for various types of elastic strips, such as "e" type elastic Bar, "w" type spring bar etc., thereby fixing rail 8. In this embodiment, it is set as a "w" type elastic strip. T-bolts 13 are installed on the rail connector 5.1, and the screw head of the T-bolt 13 cooperates with the rail connector 5.1. The column protrudes from the elastic strip, and a fastening nut 14 is installed on the extended end thereof, and the fastening nut 14 is tightened to fix the "w" type elastic strip on the rail connector 5.1.

The rail foot of the rail 8 is in contact with the elastic pad 6 under the rail. The vibration-damping fastener system includes a support column 7, a connecting sleeve 9 and an anchor bolt 12. The support column 7 cooperates with the connecting sleeve 9 to connect the first backing plate 5, the first elastic layer 4, the second backing plate 3 and The second elastic layer 2 is connected as a whole. A cover plate 10 is installed on the connecting sleeve 9, and the anchor bolt 12 passes through the cover plate 10 and the support column 7, and the first backing plate 5, the first elastic layer 4, the second backing plate 3 and the second elastic layer 2. Fix the damping fastener system on the ballast bed. A washer 11 is provided between the cover plate 10 and the anchor bolt 12 . As shown in FIG. 3 , the support column 7 includes a column body 7.2, one end of the column body 7.2 is provided with a terminal 7.3, and the other end is provided with a bottom plate 7.4. Preferably, the section size of the end 7.3 is larger than the section size of the cylinder 7.2. Preferably, the cross-sectional size of the bottom plate 7.4 is larger than the cross-sectional size of the end head 7.3. The support column 7 is provided with a first through hole 7.1, and the first through hole 7.1 runs through the end 7.3, the column body 7.2 and the bottom plate 7.4. The bottom plate 7.4 is oblong. As shown in Figures 4-5, the connecting sleeve 9 includes a sleeve 9.2, the sleeve 9.2 is provided with a second through hole 9.4, and one end of the sleeve 9.2 is provided with a buckle on the outside of the second through hole 9.4. Plate 9.1, the other end of the sleeve 9.2 is provided with a locking tongue 9.3 inside the second through hole 9.4. The first backing plate 5, the first elastic layer 4, the second backing plate 3 and the second elastic layer 2 are installed on the support column 7 from top to bottom, and the end 7.3 of the support column 7 is installed on the connecting sleeve 9 In the second through hole 9.4, the connecting sleeve 9 is rotated, and the lock tongue 9.3 at the end of the connecting sleeve 9 matches the end surface of the end 7.3 of the supporting column 7, and the connecting sleeve 9 and the supporting column 7 are connected together, that is, The first backing plate 5 , the first elastic layer 4 , the second backing plate 3 and the second elastic layer 2 are fixedly connected.

As shown in Figure 6, the under-rail elastic pad 6 is provided with an arc-shaped portion 6.1, and the arc-shaped portion 6.1 matches the shape of the buckle plate 9.1 of the connecting sleeve 9, thereby avoiding the buckle plate 9.1.

As shown in FIG. 7 , the first backing plate 5 is provided with a third through hole 5.2, and the third through hole 5.2 and the rail connector 5.1 are respectively located at two sets of diagonal positions of the rectangle.

As shown in FIG. 8 , the first elastic layer 4 is provided with a sixth through hole 4.1 corresponding to the third through hole 5.2 on the first backing plate 5 . The first elastic layer 4 is provided with a first positioning hole 4.2, and the first positioning hole 4.2 and the third through hole 5.2 are respectively located at two sets of opposite corners of the rectangle. Preferably, the first positioning hole 4.2 is a square through hole.

As shown in Figures 9-12, the second backing plate 3 is provided with a fourth through hole 3.1, the fourth through hole 3.1 and the third through hole 5.2 on the first backing plate 5, and the first elastic The sixth via 4.1 on layer 4 corresponds. The fourth through hole 3.1 is oblong, and its shape matches the shape of the bottom plate 7.4 on the support column 7 . Preferably, the surface of the second backing plate 3 adjacent to the first elastic layer 4 is provided with a first positioning protrusion 3.3, and the first positioning protrusion 3.3 corresponds to the first positioning hole 4.2 on the first elastic layer 4. Match and install in the first positioning hole 4.2, so as to limit the first elastic layer 4 and prevent the first elastic layer 4 from moving. Preferably, a second positioning protrusion 3.4 is provided on the surface of the second backing plate 3 adjacent to the second elastic layer 2, and the second positioning protrusion 3.4 corresponds to the position of the first positioning protrusion 3.3. Preferably, the first positioning protrusion 3.3 and the second positioning protrusion 3.4 are annular, and the second backing plate 3 is provided with a fifth through hole 3.2 in the annular interior of the first positioning protrusion 3.3 and the annular interior of the second positioning protrusion 3.4 . In this embodiment, the second backing plate 3 is selected from an existing steel plate of conventional specifications, and is directly punched to form a through hole, and the square steel block and the steel plate are connected together by welding, thereby forming the first positioning protrusion 3.3 and the second positioning protrusion 3.3. 3.4. In this embodiment, the fifth through hole 3.2 is provided, which is beneficial for welding the square steel block and the steel plate into one. The thickness of the steel plate of conventional specifications is 5mm, which is reduced compared with the cast backing plate; the thickness of the steel plate selected in this example is reduced compared with the thickness of the cast backing plate, but the rigidity of the fastener system The impact is negligible. The steel plate of the existing conventional specification selected in this embodiment is punched and formed, and then the square steel block and the steel plate are welded together, which can reduce the thickness of the second backing plate 3 and effectively avoid the defects caused by the casting process. Simplify the process and reduce the cost.

As shown in Figures 13-14, the second elastic layer 2 is provided with an eighth through hole 2.3 and a second positioning hole 2.2. The eighth through hole 2.3 corresponds to the third through hole 5.2 on the first backing plate 5, the sixth through hole 4.1 on the first elastic layer 4, and the fourth through hole 3.1 on the second backing plate 3 , and the support column 7 is installed therein. The second positioning hole 2.2 matches the second positioning protrusion 3.4 on the second backing plate 3, and the second positioning protrusion 3.4 is installed in the second positioning hole 2.2 to prevent the second elastic layer 2 from moving. A pad 2.4 is provided on the inner wall of the eighth through hole 2.3 close to the end of the second backing plate 3, so that an oblong seventh through hole 2.1 is formed at the end of the eighth through hole 2.3 close to the second backing plate 3, and An accommodating chamber 2.5 is formed on the side of the eighth through hole 2.3 away from the second backing plate 3, and the accommodating chamber 2.5 accommodates the bottom plate 7.4 on the supporting column 7. The seventh through hole 2.1 matches the fourth through hole 3.1 on the second backing plate 3 and the bottom plate 7.4 on the support column 7 in shape. The bottom plate 7.4 on the support column 7 can pass through the seventh through hole 2.1 and the fourth through hole 3.1 on the second backing plate 3, and through rotation, the bottom plate 7.4 is connected to the second elastic layer 2 and the second backing plate 3 Phase card connection.

When assembled, the support column 7 is installed in the seventh through hole 2.1, the fourth through hole 3.1, the sixth through hole 4.1 and the third through hole 5.2, and the oblong bottom plate 7.4 on the support column 7 is located in the second through hole. In the accommodation cavity 2.5 of the elastic layer 2, and the oval bottom plate 7.4 is relatively misaligned with the seventh through hole 2.1 on the second elastic layer 2, that is, the bottom plate 7.4 is engaged with the pad 2.4 on the second elastic layer 2 . The connecting sleeve 9 is installed between the supporting column 7 and the third through hole 5.2, and the locking tongue 9.3 on the connecting sleeve 9 is matched with the end face of the upper end 7.3 of the supporting column 7, and the connecting sleeve 9 and the supporting column 7 are connected on the together, and make the buckle plate 9.1 buckle on the first backing plate 5, and finally connect the first backing plate 5, the first elastic layer 4, the second backing plate 3 and the second elastic layer 2 into one to form a pre-assembled part, To facilitate transportation and on-site installation. In this embodiment, the first elastic layer 4 and the second elastic layer 2 in the pre-assembled part are compressed to store part of the elastic energy, which can effectively prevent the support column 7 from falling off due to the rotation of the support column 7 caused by non-human external forces such as vibration during transportation. Resulting pre-assembly failure. In addition, by rotating the support column 7, the upper bottom plate 7.4 of the support column 7 corresponds to the seventh through hole 2.1 on the second elastic layer 2 and the fourth through hole 3.1 on the second backing plate 3, so that the support column 7 can be moved by Take it out from bottom to top, so that the first elastic layer 4 or the second elastic layer 2 can be directly pulled out for replacement. After the replacement is completed, the upper bottom plate 7.4 of the supporting column 7 is first corresponding to the seventh through hole 2.1 on the second elastic layer 2 and the fourth through hole 3.1 on the second backing plate 3, and the supporting column 7 is passed through the seventh through hole 3.1. In the through hole 2.1 and in the receiving chamber 2.5, the support column 7 is rotated 90 degrees so that the bottom plate 7.4 is relatively misaligned with the seventh through hole 2.1. Then the connection sleeve 9 is installed on the end 7.3 of the support column 7, and the rotation connects the connection sleeve 9 and the support column 7, so that the buckle plate 9.1 is buckled on the first backing plate 5, and finally the first backing plate 5, The first elastic layer 4 , the second backing plate 3 and the second elastic layer 2 are connected as one.

In this embodiment, the first elastic layer 4 , the second backing plate 3 and the second elastic layer 2 can be arranged separately from each other. In this embodiment, the first elastic layer 4, the second backing plate 3 and the second elastic layer 2 can also be bonded together during preparation; the first elastic layer 4, the second backing plate 3 and the second elastic layer 2 Bonding as a whole can reduce the installation process and improve assembly efficiency.

Compared with the traditional multi-layer fastener, the utility model brings new technical effects. The second backing plate 3 is provided with elastic layers up and down in the vertical direction, so the second backing plate can be used as a mass block, and its vertical and lateral With a certain stiffness, it can be regarded as a spring-mass system and can be used as a separate resonance system; the second backing plate 3 can be a continuous plate, or can be divided into discontinuous multiple plates to resonate in different frequency bands . This technical effect is not available in the current common and medium vibration damping fasteners.

As shown in Figure 15, the fastener system is installed on the track bed, and the backing plate and the elastic layer of the fastener system are arranged adjacent to each other from top to bottom, forming a series system in the vertical direction, so that the fastener system can obtain a lower the vertical stiffness. The displacement of the second backing plate in the vertical direction is not constrained, and acts as a separate resonance system to absorb vibration energy, thereby reducing vibration and noise. In actual engineering, the quality, quantity, and shape of the second backing plate are adjusted according to the design of the fastener system to meet different needs.

The utility model proposes a high-grade vibration-damping fastener based on the compression type, which adopts the spaced arrangement between the backing plate and the elastic layer, so that the elastic layer forms a series connection, obtains lower vertical stiffness, and thus achieves a higher vibration-damping effect , At the same time, the steel rail can be directly dropped on the ground to ensure the safety of use, and the market is accepted for promotion.

In the utility model, although a layer of elastic layer is added, the installation height will be increased compared with ordinary vibration-damping fasteners, which may cause a decrease in lateral stability, but the fasteners can be eliminated by means of mechanical connection and shoulder blocking. one impact. In addition, the second backing plate in the utility model is made of a steel plate of conventional specifications, and its thickness is much smaller than the backing plate formed by casting. Although an elastic layer is added, the thickness of the second backing plate is reduced, so that the utility model is reduced The height of the vibration-absorbing fastener system is slightly larger than ordinary vibration-absorbing fasteners or multi-layer medium vibration-absorbing fastener systems, so as to ensure the lateral stability of the fastener system. In addition, the number of backing plates and the number of elastic layers are not as many as possible. Considering the installation height requirements of the track, the arrangement of two layers of backing plates and three layers of elastic layers is the maximum series effect that can be achieved while meeting the installation height requirements of the track.

Compared with the traditional fasteners, the utility model has new technical effects. The second backing plate is provided with elastic layers up and down in the vertical direction, so the second backing plate can be used as a mass block, and its vertical and lateral directions have certain rigidity. It can be regarded as a spring-mass system and can be used as a separate resonance system; the second backing plate can be a continuous plate or divided into discontinuous multiple plates to resonate in different frequency bands. This technical effect is not available in the current common and medium vibration damping fasteners.

It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model Inside.

Claims (10)

1. a kind of Damping fastening system, the Damping fastening system from top to bottom successively includes elastic cushion (6), the first backing plate under rail (5), the first elastic layer (4), the second backing plate (3)；It is characterized by: the Damping fastening system includes the second elastic layer (2), branch Dagger (7), connector sleeve (9) and anchor bolt (12), second elastic layer (2) are located on the downside of the second backing plate (3)；The support Column (7) and connector sleeve (9) cooperate the first backing plate (5), the first elastic layer (4), the second backing plate (3) and the second elastic layer (2) even It is connected together, Damping fastening system is fastened on railway roadbed by the anchor bolt (12).

2. a kind of Damping fastening system according to claim 1, it is characterised in that: the support column (7) includes cylinder (7.2), described cylinder (7.2) one end is equipped with bottom plate (7.4), and the other end is socketed with connector sleeve (9)；The bottom plate (7.4) and the Two elastic layers (2) match, and the connector sleeve (9) is withheld on the first backing plate (5).

3. a kind of Damping fastening system according to claim 2, it is characterised in that: second backing plate (3) is equipped with the Four through-holes (3.1), the fourth hole (3.1) is interior to install support column (7)；Fourth hole (3.1) shape and bottom plate (7.4) Shape is consistent, and the bottom plate (7.4) can pass through fourth hole (3.1), and after rotating by a certain angle, with the second backing plate (3) it is mutually clamped.

4. a kind of Damping fastening system according to claim 3, it is characterised in that: second elastic layer (2) is equipped with 8th through-hole (2.3), inner wall of the 8th through-hole (2.3) close to the second backing plate (3) one end is equipped with card mat (2.4), described The 7th through-hole (2.1), the fourth hole on the 7th through-hole (2.1) and second backing plate (3) are formed between card mat (2.4) (3.1) corresponding, and shape is consistent.

5. a kind of Damping fastening system according to claim 4, it is characterised in that: the 8th through-hole (2.3) is located at card It pads and forms accommodating chamber (2.5) on the downside of (2.4), the bottom plate (7.4) on the support column (7) is fully mounted in accommodating chamber (2.5).

6. a kind of Damping fastening system according to claim 1, it is characterised in that: second backing plate (3) and the first bullet Property layer (4) adjacent surface be equipped with the first positioning protrusion (3.3)；First elastic layer (4) is equipped with first positioning hole (4.2), the first positioning hole (4.2) matches with the first positioning protrusion (3.3).

7. a kind of Damping fastening system according to claim 6, it is characterised in that: second backing plate (3) and the second bullet Property layer (2) adjacent surface be equipped with the second positioning protrusion (3.4), second elastic layer (2) is equipped with second location hole (2.2), the second location hole (2.2) matches with the second positioning protrusion (3.4) on the second backing plate (3).

8. a kind of Damping fastening system according to claim 7, it is characterised in that: first positioning protrusion (3.3), Two positioning protrusions (3.4) are linked together with the second backing plate (3) by welding.

9. a kind of Damping fastening system according to claim 8, it is characterised in that: first positioning protrusion (3.3), Two positioning protrusions (3.4) are square steel block.

10. a kind of Damping fastening system according to claim 1, it is characterised in that: elastic cushion (6) is equipped under the rail Curved portion (6.1), the connector sleeve (9) are equipped with buckle (9.1), and the buckle (9.1) is withheld on the first backing plate (5)；Institute Curved portion (6.1) is stated to match with buckle (9.1) shape of connector sleeve (9).