CN217948617U - Install damping fastener system fast - Google Patents

Abstract

The utility model discloses a rapid installation vibration damping fastener system, which relates to the technical field of vibration damping and noise reduction of rail transit, and comprises an insulation coupling base plate, a lower iron base plate, a middle vibration damping pad, an upper iron base plate and a lower rail vibration damping pad which are arranged from bottom to top in sequence; lower iron tie plate, middle damping pad, last iron tie plate pass through multiunit pre-assembled bolt preassembly as an organic wholely, be provided with the bullet strip seat on the last iron tie plate, be provided with the quick bullet strip that is used for fixed rail on the bullet strip seat, the reserve tank that is used for holding middle damping pad is offered to iron tie plate up end down, the mounting hole that is used for wearing to establish fastening connection spare is all offered to corresponding position on insulating coupling backing plate, lower iron tie plate, middle damping pad, the last iron tie plate, has solved among the prior art too high, the wet insulating properties of damping fastener mounting height not enough, damping pad elastic element atress inconsistent and the problem that fastener installation effectiveness is low.

Description

Install damping fastener system fast

Technical Field

The utility model relates to a technical field that makes an uproar falls in the rail transit damping, concretely relates to damping fastener system.

Background

The vibration reduction fastener realizes vibration reduction and noise reduction of the rail by reducing the vertical supporting rigidity of the steel rail, and is a common vibration reduction and noise reduction measure in the field of urban rail transit. The separable compression type vibration damping fastener has become the most widely applied vibration damping fastener form in China due to the advantages of simple structure, excellent vibration damping effect, independently detachable elastic element, easy installation and maintenance, low comprehensive application cost and the like. The main body structure of the separable compression type vibration damping fastener generally comprises an upper iron base plate, a lower iron base plate, a middle vibration damping pad (single layer or multilayer), a vibration damping pad under a rail, an insulation coupling base plate, a pre-tightening assembly structure, an elastic strip, an anchor bolt and other general parts. The following problems exist in practical application:

(1) Too high installation height

The installation height of the existing separable compression vibration-damping fastener is 14-16 mm higher than that of the common elastic split fastener. According to the requirement of vibration noise ring evaluation, for the same subway line, the situation that a part of road sections adopt common elastic split fasteners and a part of road sections adopt vibration reduction fasteners may exist. The two fasteners have too large difference in installation height, so that the construction of a new track bed base is not facilitated. The operation of replacing the vibration-damping fastener by the common elastic split fastener in the old line reconstruction project is also not facilitated.

(2) Insufficient wet insulation performance

The insulation coupling base plate laid between the iron base plate (lower iron base plate) of the existing separable compression damping fastener and the sleeper or the railway bed rail bearing platform is of a flat plate structure, and the thickness of the insulation coupling base plate is generally 3-5 mm. The size of the outer contour of the insulation coupling base plate is slightly larger than that of the iron base plate, on one hand, the iron base plate can be prevented from falling in the air during installation, and on the other hand, the creepage distance from the iron base plate to a sleeper or a railway bed rail bearing platform is increased to a certain extent. However, at the bolt hole position, the insulating coupling base plate does not do secondary insulating protection, so that the minimum creepage gap from the iron base plate to the sleeper or the railway bed rail bearing platform is based on the thickness of the insulating coupling base plate, and the creepage gap is relatively small. Under the condition that the fastener is polluted or wet, the creepage distance from the fastener to a sleeper or a railway bed rail bearing platform is insufficient, so that the insulation resistance of the fastener is too low, and the stray current is caused.

(3) The elastic units of the damping pad are stressed inconsistently

The load transmitted to the fastener by the steel rail has vertical load and transverse load, so that the vertical load borne by the damping pad is non-uniform, namely the outer side load of the steel rail is large and the inner side load of the steel rail is small. The conventional design of the damping pad distributes the resilient units (e.g., stud structures) with a uniform stiffness. According to the loading mode that the outer side load of the steel rail of the damping pad is large and the inner side load of the steel rail is small, the elastic unit on the outer side of the steel rail is large in loading, the stress level is relatively high, the elastic unit on the inner side of the steel rail is small in loading, the stress level is relatively low, and the fatigue performance of the damping pad is not facilitated.

(4) Low mounting efficiency

The elastic strip form that current detachable compression damping fastener adopted is unanimous with ordinary elasticity split type fastener to there are D I bullet strip, III type bullet strip etc. that no bolt bullet strip is as the representative, has I type bullet strip, II type bullet strip etc. that there is the bolt bullet strip as the representative. The online application effect of the elastic strips is widely accepted, but in the aspect of construction and installation, the elastic strips of the types still need to be manually installed, and the automation degree and the installation efficiency are low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an install damping fastener system fast to solve among the prior art problem that damping fastener mounting height is too high, wet attitude insulating properties is not enough, damping pad elastic element atress is inconsistent and fastener installation effectiveness is low.

In order to achieve the above purpose, the utility model provides a following technical scheme: a quick installation vibration damping fastener system comprises an insulation coupling base plate, a lower iron base plate, a middle vibration damping pad, an upper iron base plate and a lower rail vibration damping pad which are sequentially arranged from bottom to top; lower iron tie plate, middle damping pad, go up the iron tie plate and pass through multiunit pre-assembled bolt preassembly as an organic wholely, it is provided with the bullet strip seat on the iron tie plate to go up, be provided with the quick bullet strip that is used for fixed rail on the bullet strip seat, the reserve tank that is used for holding middle damping pad is offered to iron tie plate up end down, the mounting hole that is used for wearing to establish fastening connection spare is all offered to corresponding position on insulating coupling backing plate, lower iron tie plate, middle damping pad, the last iron tie plate.

In order to further optimize the utility model, the following technical scheme can be preferably selected for use:

preferably, the outer contour of the insulating coupling base plate is larger than that of the lower iron base plate, a boss is arranged at the position, corresponding to the mounting hole, of the upper end face of the insulating coupling base plate, and a groove matched with the flange is formed in the position of the mounting hole in the bottom of the lower iron base plate.

Preferably, the lower iron base plate is provided with a drainage groove connected with the preformed groove.

Preferably, the middle damping pad comprises a middle area and a peripheral area, wherein the thickness value of the middle area is greater than that of the peripheral area, and the bottom of the middle area is embedded in the reserved groove.

Preferably, the peripheral region is designed as a single-sided elastic unit, the middle region is designed as a double-sided elastic unit, the pre-tightening deformation of the middle region of the middle vibration damping pad is larger than that of the peripheral region, namely D-H is larger than D-H, wherein D is the thickness value of the middle region, H is the gap value of the upper iron base plate and the lower iron base plate in the vertical direction at the peripheral region, and H is the gap value of the upper iron base plate and the lower iron base plate in the vertical direction at the middle region.

Preferably, the lower and middle damping pads are designed to have non-uniform rigidity in the horizontal direction, wherein the rigidity of the outer sides of the corresponding steel rails on the lower and middle damping pads is higher than that of the inner sides of the steel rails.

Preferably, the fastening connecting piece comprises a connecting bolt arranged in the mounting hole in a penetrating mode, and the connecting bolt is provided with a distance adjusting cover plate and an insulating sleeve from bottom to top in sequence corresponding to the position above the upper iron base plate.

Preferably, the lower iron base plate is provided with a connecting bulge corresponding to the position of the mounting hole, the upper end of the connecting bulge penetrates through the upper iron base plate, and the upper end face of the connecting bulge and the upper end face of the distance adjusting cover plate are provided with mutually matched anti-slip lines.

Preferably, the upper iron base plate is provided with a clamping part for limiting the lower vibration damping pad of the rail.

Compared with the prior art, the beneficial effects of the utility model are that:

the fastener realizes the vibration damping performance of the quick elastic strip fastener through the two layers of iron base plates and the two layers of vibration damping pads; the installation height of the vibration-damping fastener is effectively reduced through the groove design of the lower iron base plate and the vertical low-spacing design of the upper iron base plate and the lower iron base plate, and the adaptability of the fastener on a line is improved; the consistency of the rigidity and stress of the damping unit (single) of the middle damping pad is realized through the matching design of the thickness and the distance between the middle area of the middle damping pad and the peripheral area of the upper iron base plate and the lower iron base plate. Through the design that the boss at the bolt hole of the insulating coupling base plate is matched with the groove at the bottom of the lower iron base plate, on one hand, the positioning effect of the lower iron base plate on the insulating coupling base plate is realized, and the problem that the insulating coupling base plate is installed in a staggered manner in the construction and installation process can be effectively avoided; on the other hand, this design has increased the creepage clearance of iron tie plate to railway roadbed support rail platform or sleeper down, can effectively promote the wet insulation resistance of this fastener.

Drawings

FIG. 1 is a schematic view of the overall structure of a vibration-damping fastener;

FIG. 2 is a cross-sectional view of a vibration-reducing fastener;

FIG. 3 is a schematic structural view of an upper iron backing plate;

FIG. 4 is a schematic view of the overall structure of the lower iron shim plate;

FIG. 5 is a schematic bottom structure view of the lower iron backing plate;

FIG. 6 is a structural sectional view of a lower iron shim plate;

FIG. 7 is a schematic structural diagram of an insulating coupling pad;

FIG. 8 is a schematic view of the structure of an intermediate damping pad;

FIG. 9 is a cross-sectional view of an intermediate damping pad;

fig. 10 is a schematic view of the upper and lower iron plates.

In the figure: 1. a steel rail; 2. a spring strip seat; 3. quick spring bars; 4. fastening a connecting piece; 5. an under-rail vibration damping pad; 6. feeding an iron base plate; 7. a lower iron base plate; 8. an insulating coupling pad plate; 9. an intermediate vibration damping pad; 10. preassembling the bolt; 11. a connecting bolt; 12. a distance adjusting cover plate; 13. an insulating sleeve; 14. mounting holes; 15. reserving a groove; 16. a connecting projection; 17. a water discharge tank; 18. a groove 19 and an anti-skid line; 20. an annular boss; 21. a middle region; 22. a peripheral region.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-10, a system for quickly mounting a vibration-damping fastener includes an insulating coupling pad 8, a lower iron pad 7, a middle vibration-damping pad 9, an upper iron pad 6, and a lower rail vibration-damping pad 5, which are sequentially mounted from bottom to top; the damping pad is installed under rail 1 and is used for supporting rail 1, lower iron tie plate, middle damping pad, go up the iron tie plate and preassemble as an organic whole through multiunit preassembled bolt 10, it installs elastic strip seat 2 to go up on the iron tie plate, install the quick elastic strip 3 that is used for fixed rail on the elastic strip seat, reserve groove 15 that is used for holding middle damping pad is offered to lower iron tie plate up end, insulating coupling backing plate, lower iron tie plate, middle damping pad, the mounting hole 14 that is used for wearing to establish fastening connection spare is all offered to corresponding position on the upper iron tie plate, the mounting hole is waist type hole in this embodiment, fastening connection spare 4 is including wearing to establish the connecting bolt 11 in the mounting hole, correspond upper iron tie plate top position on connecting bolt 11 and from lower supreme distance adjusting apron 12, insulating cover 13 of installing in proper order, wherein correspond mounting hole position department on the lower iron tie plate and connect protruding 16, connect protruding upper end through and extend the upper iron tie plate, connect protruding 16 up end and distance adjusting apron up end install mutually supporting anti-slip line 19.

The outer contour of the insulating coupling base plate is larger than that of the lower iron base plate, a boss is arranged at the position, corresponding to the mounting hole, of the upper end face of the insulating coupling base plate, a groove matched with the flange is formed in the position of the mounting hole in the bottom of the lower iron base plate, in the embodiment, in order to facilitate clamping, the boss is an annular boss 20, and the groove 18 is a circular groove; further, a drainage groove 17 connected with the preformed groove is formed in the lower iron base plate.

The middle damping pad comprises a middle area 21 and a peripheral area 22, wherein the thickness value of the middle area is larger than that of the peripheral area, the bottom of the middle area is embedded in the reserved groove, the peripheral area adopts the design of a single-sided elastic unit, the gap between the upper iron base plate and the lower iron base plate in the vertical direction is effectively reduced, and the mounting height of the fastener is further reduced.

Further, in this embodiment, the lower and middle damping pads are designed to have non-uniform rigidity in the horizontal direction, and the arrangement form thereof may refer to the structure in the drawings, wherein the rigidity of the lower and middle damping pads corresponding to the outer sides of the rails is greater than the rigidity of the inner sides of the rails. Install the block portion that is used for damping pad under the spacing rail on the last iron backing plate, carry on spacingly to damping pad's position under the rail through block portion, guarantee overall structure's stability.

In conclusion, the product has the following advantages:

(1) This damping fastener has adopted the interface condition of quick bullet strip, and the main component has: the device comprises an upper iron base plate, a lower rail vibration damping pad, an intermediate vibration damping pad, an insulation coupling base plate, a preassembled bolt system, a distance adjusting cover plate, an insulation sleeve, a quick elastic strip, a spike and other universal parts. Wherein the upper iron base plate, the lower iron base plate and the middle damping pad are factory assembled into a whole through a pre-assembled bolt system.

(2) The lower iron base plate of the fastener adopts a half-hollow design, and the middle damping pad is placed in the reserved groove, so that the mounting height of the fastener is reduced.

(3) The middle damping pad of the fastener adopts a double-thickness design, the thickness (D) of the middle area is large, and the thickness (D) of the peripheral area is small. The design of single-sided elastic units is adopted in the peripheral area, so that the gap between the upper iron base plate and the lower iron base plate in the vertical direction is effectively reduced, and the mounting height of the fastener is further reduced. Through the control of the vertical clearance between the upper iron base plate and the lower iron base plate and the thickness of the middle damping pad, the pre-tightening deformation of the middle area of the middle damping pad is larger than that of the peripheral area, namely D-H is larger than D-H. Therefore, the vertical rigidity of the elastic unit in the middle area of the middle damping pad is consistent with that of the elastic unit in the peripheral area. The purpose of uniform stress and deformation of the upper iron base plate is achieved.

(4) The damping pads (the lower damping pad and the middle damping pad) of the fastener adopt the design of non-uniform rigidity in the horizontal direction, namely the rigidity of the outer side of the steel rail is large and the rigidity of the inner side of the steel rail is small. Therefore, when the damping pad is subjected to uneven load (the load on the outer side of the steel rail is large, the load on the inner side of the steel rail is small), the damping pad can be uniformly deformed, and the stress of the single elastic unit is consistent.

(5) The outline of an insulating coupling base plate of the fastener is larger than that of an iron base plate, a boss is upwards formed at a bolt hole, and a groove is arranged at the corresponding position of the bottom of a lower iron base plate. On one hand, the creepage distance from the lower iron base plate to the sleeper or the railway bed rail bearing platform is increased, and the wet insulation resistance of the vibration damping fastener is effectively improved; on the other hand, through the screens of insulating coupling backing plate boss and lower iron backing plate bottom bolt hole position recess, can effectively prevent the emergence of lower iron backing plate dislocation installation problem.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. A quick installation vibration damping fastener system comprises an insulation coupling base plate, a lower iron base plate, a middle vibration damping pad, an upper iron base plate and a lower rail vibration damping pad which are sequentially arranged from bottom to top; the method is characterized in that: lower iron tie plate, middle damping pad, go up the iron tie plate and pass through multiunit pre-assembled bolt preassembly as an organic wholely, it is provided with the bullet strip seat on the iron tie plate to go up, be provided with the quick bullet strip that is used for fixed rail on the bullet strip seat, the reserve tank that is used for holding middle damping pad is offered to iron tie plate up end down, the mounting hole that is used for wearing to establish fastening connection spare is all offered to corresponding position on insulating coupling backing plate, lower iron tie plate, middle damping pad, the last iron tie plate.

2. A quick-install vibration-damping fastener system according to claim 1, wherein: the outer contour of the insulating coupling base plate is larger than that of the lower iron base plate, a boss is arranged at the position, corresponding to the mounting hole, of the upper end face of the insulating coupling base plate, and a groove matched with the flange is formed in the position of the mounting hole in the bottom of the lower iron base plate.

3. A quick-install vibration-damping fastener system according to claim 1, wherein: and the lower iron base plate is provided with a water drainage groove connected with the preformed groove.

4. The quick install, vibration-damped fastener system according to claim 1 wherein: the middle damping pad comprises a middle area and a peripheral area, wherein the thickness value of the middle area is larger than that of the peripheral area, and the bottom of the middle area is embedded in the reserved groove.

5. The quick install vibration-damped fastener system according to claim 4 wherein: the peripheral area is designed as a single-sided elastic unit, the middle area is designed as a double-sided elastic unit, the pre-tightening deformation of the middle area of the middle damping pad is larger than that of the peripheral area, namely D-H is larger than D-H, wherein D is the thickness value of the middle area, H is the gap value of the upper iron base plate and the lower iron base plate in the vertical direction at the peripheral area, and H is the gap value of the upper iron base plate and the lower iron base plate in the vertical direction at the middle area.

6. The quick install, vibration-damped fastener system according to claim 1 wherein: the lower vibration damping pad and the middle vibration damping pad are designed in a non-uniform rigidity mode in the horizontal direction, wherein the rigidity of the outer sides of the corresponding steel rails on the lower vibration damping pad and the middle vibration damping pad is larger than the rigidity of the inner sides of the steel rails.

7. The quick install, vibration-damped fastener system according to claim 1 wherein: the fastening connecting piece comprises a connecting bolt penetrating through the mounting hole, and a distance adjusting cover plate and an insulating sleeve are sequentially arranged on the connecting bolt from bottom to top corresponding to the position above the upper iron base plate.

8. A quick-install vibration-damping fastener system according to claim 7, wherein: the lower iron base plate is provided with a connecting bulge corresponding to the mounting hole, the upper end of the connecting bulge penetrates through the upper iron base plate, and the upper end face of the connecting bulge and the upper end face of the distance adjusting cover plate are provided with mutually matched anti-slip lines.

9. The quick install, vibration-damped fastener system according to claim 1 wherein: and the upper iron base plate is provided with a clamping part for limiting the lower vibration damping pad of the rail.

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