CN215668764U - Double-layer vibration-damping fastener with shoulder - Google Patents
Double-layer vibration-damping fastener with shoulder Download PDFInfo
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- CN215668764U CN215668764U CN202121279367.3U CN202121279367U CN215668764U CN 215668764 U CN215668764 U CN 215668764U CN 202121279367 U CN202121279367 U CN 202121279367U CN 215668764 U CN215668764 U CN 215668764U
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Abstract
The utility model provides a have and keep off double-deck damping fastener of shoulder, through to structural optimization design, when realizing making things convenient for the pre-assembling, realize that horizontal dog and fender shoulder cooperation target in place, improve the stability, reliability and the damping performance that have and keep off double-deck damping fastener of shoulder, reduce the machining precision requirement to spare part simultaneously. The steel plate comprises an upper iron base plate, a lower iron base plate and a middle elastic base plate arranged between the upper iron base plate and the lower iron base plate, wherein transverse retaining shoulders are fixedly arranged on the plate body at the two transverse sides of the lower iron base plate through an assembly connection structure, the transverse retaining shoulders at the two transverse sides are provided with inner transverse limiting surfaces corresponding to outer transverse limiting surfaces of the upper iron base plate, and a transverse stop block is inserted between the inner transverse limiting surfaces and the outer transverse limiting surfaces. The horizontal both sides of going up the iron backing plate are provided with the assembly through-hole, correspond to set up on the lower iron backing plate by its plate body bellied cavity boss that makes progress, and the cavity boss inserts in the assembly through-hole that corresponds, passes through the joint structure by the nylon cover and goes up iron backing plate, lower iron backing plate be assembled between/be connected as an organic whole, and form the pre-assembled body with middle elastic backing plate, horizontal fender shoulder and horizontal dog.
Description
Technical Field
The utility model relates to rail transit, in particular to a double-layer vibration-damping fastener with a shoulder.
Background
In recent years, with the rapid development of rail transit, people are not only convenient, but also have environmental problems such as vibration and noise. To solve this problem, people would mount vibration damping fasteners on the rails. Various fasteners are provided in the market at present, wherein the upper self-locking type double-layer vibration-damping fastener with the shoulder is widely applied due to the excellent vibration-damping performance and reasonable manufacturing cost.
The upper self-locking type double-layer vibration-damping fastener with a shoulder is divided into an upper iron base plate, a middle rubber pad, a lower iron base plate, a transverse stop block and a connecting nylon sleeve for connecting the upper iron base plate and the lower iron base plate together. The upper self-locking type double-layer vibration damping fastener with the shoulder adopts two layers of elastic base plates to realize the vibration damping effect, and the two layers of elastic base plates are respectively placed below the steel rail, below the upper iron base plate and above the lower iron base plate. Based on the different characteristics of mechanical property and track atress, the damping fastener mainly relies on middle elastic backing plate to realize the damping effect, and the elastic backing plate plays the function of supplementary damping under the track. When the fastener is subjected to the vibration impact force of the steel rail, the vibration impact force is transmitted to the upper iron base plate, and then the middle elastic base plate arranged below the upper iron base plate is elastically deformed, so that the vibration impact is buffered and isolated, and the corresponding vibration reduction effect is realized. The design can effectively isolate the transmission of the vibration of the wheel track to the track bed foundation, but has the following technical defects:
(1) the installation fit is not in place. The transverse stopper is arranged between the retaining shoulders of the upper iron base plate and the lower iron base plate, can strengthen the connection of the upper iron plate and the lower iron plate and can buffer the impact force of the upper iron plate to the direction vertical to the transverse direction of the steel rail. However, the upper and lower iron plates are made of cast iron and subjected to anticorrosive paint spraying treatment, the transverse stop block is made of nylon and is influenced by the characteristics of the nylon material, and the actual size and the theoretical size of the transverse stop block are deviated after the transverse stop block is machined. When the fastener is assembled, the retaining shoulders of the upper iron backing plate and the lower iron backing plate and the transverse retaining block cannot be perfectly matched, so that the problem of incomplete assembly to a certain extent is caused, great trouble is brought to processing and production, and the actual using effect of a product is also influenced;
(2) the installation is difficult. When the upper iron base plate, the lower iron base plate, the middle elastic cushion, the nylon sleeve and the transverse check block are preassembled, the transverse check block cannot be smoothly installed due to the size problem, the installation is difficult, and the working efficiency is reduced to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a shoulder-retaining double-layer vibration-damping fastener, which is characterized in that through the optimized design of a structure, a transverse stop block and a shoulder are matched in place while convenient pre-assembly is realized, the stability, reliability and vibration-damping performance of the shoulder-retaining double-layer vibration-damping fastener are improved, and the requirement on the processing precision of parts is reduced.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model relates to a double-layer vibration-damping fastener with a shoulder, which comprises an upper iron base plate, a lower iron base plate and a middle elastic base plate arranged between the upper iron base plate and the lower iron base plate, and is characterized in that: transverse retaining shoulders are fixedly arranged on the plate bodies at the two transverse sides of the lower iron base plate through an assembly connection structure, inner transverse limiting surfaces of the transverse retaining shoulders at the two sides correspond to the outer transverse limiting surfaces of the upper iron base plate, and a transverse stop block is inserted between the inner transverse limiting surfaces and the outer transverse limiting surfaces; the horizontal both sides of going up the iron backing plate are provided with the assembly through-hole, correspond to set up on the lower iron backing plate by its plate body bellied cavity boss that makes progress, and the cavity boss inserts in the assembly through-hole that corresponds, passes through the joint structure by the nylon cover and goes up iron backing plate, lower iron backing plate be assembled between/be connected as an organic whole, and form the pre-assembled body with middle elastic backing plate, horizontal fender shoulder and horizontal dog.
The assembly connection structure comprises a T-shaped groove arranged on the lower iron base plate body and an inverted T-shaped clamping protrusion correspondingly arranged at the bottom of the transverse retaining shoulder, the inverted T-shaped clamping protrusion is inserted into the T-shaped groove, and a vertical contact surface of the inverted T-shaped clamping protrusion is provided with a tooth-shaped structure which is mutually occluded.
The joint structure is including setting up protruding and the corresponding screens groove that sets up on iron tie plate cavity boss outer wall down on the nylon cover inner wall to and set up the ladder flange on nylon cover upper portion, and the protruding and screens groove formation unsmooth screens cooperation on the iron tie plate cavity boss down of nylon cover is connected during the assembly, and nylon cover upper portion ladder flange is withheld on the face of last iron tie plate.
The utility model has the beneficial effects that the double-layer vibration damping fastener with the retaining shoulders is provided, the pre-assembled body can be conveniently installed, the optimal matching of the transverse stop block and the transverse retaining shoulders is realized, the processing size of parts is reduced, and the stability, the reliability and the vibration damping performance of the fastener are improved.
Drawings
The specification includes the following fourteen drawings:
FIG. 1 is a schematic view of a shoulder-mounted double-layer damping fastener according to the present invention;
FIG. 2 is a perspective view of a nylon sleeve in the double-deck vibration-damping fastener with shoulder stops of the present invention;
FIG. 3 is a perspective view of a nylon sleeve in the double-deck vibration-damping fastener with shoulder stops of the present invention;
FIG. 4 is a perspective view of a transverse shoulder of a double-layered vibration-damping fastener with shoulders according to the present invention;
FIG. 5 is a perspective view of a transverse shoulder of a double-layered vibration-damping shoulder-mounted fastener of the present invention;
FIG. 6 is a perspective view of a transverse stop in a shouldered dual-layer vibration damping fastener of the present invention;
FIG. 7 is a perspective view of an upper iron backing plate in a shoulder double layer damping fastener of the present invention;
FIG. 8 is a perspective view of the lower iron plate of the double-layered vibration damping fastener with shoulder stops of the present invention;
FIG. 9 is a schematic view of the assembly structure of the transverse block and the lower iron plate of the double-layer vibration-damping fastener with shoulder;
FIG. 10 is a cross-sectional view of an assembly of an upper iron plate, a lower iron plate, a middle elastic plate and a nylon sleeve of the double-layer vibration-damping fastener with shoulder stops according to the present invention;
FIG. 11 is a cross-sectional view of an assembly of an upper iron plate, a lower iron plate, a middle elastic plate, a transverse shoulder, and a transverse stop of the double-layered vibration damping fastener with shoulder stops according to the present invention;
FIG. 12 is a schematic perspective view of an assembly of a lower iron plate, a movable shoulder, and a movable block of a double-layered vibration-damping fastener with a shoulder according to the present invention;
FIG. 13 is a perspective view of a movable clamping block in a shoulder-mounted double-deck vibration damping fastener of the present invention;
FIG. 14 is a schematic plan view of the structure of the lower iron plate, the movable shoulder, and the movable clamping block set of the double-layered vibration-damping fastener with shoulder-stop of the present invention;
the figures show the components and corresponding references: the steel rail comprises a steel rail 10, an elastic backing plate 20 under the steel rail, a nylon sleeve 30, a protrusion 31, a step flange 32, an upper iron backing plate 40, an assembling through hole 41, an upper surface 42, an elastic strip seat 43, an outer lateral limiting surface 44, a locking cover plate 45, an anchor bolt 46, a lateral stop 50, a lateral stop shoulder 60, an inner lateral limiting surface 61, an inverted T-shaped clamping protrusion 64, a tooth-shaped structure 65, a clamping protrusion 66, a side surface 67, a lower iron backing plate 70, a through hole 71, a hollow boss 72, a clamping groove 73, a T-shaped groove 74, a lower iron backing plate side surface 75, a movable clamping block 76 and a middle elastic backing plate 80.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
Referring to fig. 1, the double-layer damping fastener with shoulder comprises an upper iron backing plate 40, a lower iron backing plate 70 and a middle elastic backing plate 80 arranged between the two plate surfaces. The lower iron backing plate 70 is fixedly provided with transverse blocking shoulders 60 at two transverse sides thereof through an assembly connection structure, the transverse blocking shoulders 60 at two transverse sides have inner transverse limiting surfaces 61 corresponding to the outer transverse limiting surfaces 44 of the upper iron backing plate 40, and a transverse stop 50 is inserted therebetween. Referring to fig. 1, 7, 8 and 10, the upper iron backing plate 40 is provided with assembling through holes 41 on both lateral sides, the lower iron backing plate 70 is correspondingly provided with hollow bosses 72 protruding upwards from the plate body, the hollow bosses 72 are inserted into the corresponding assembling through holes 41, the upper iron backing plate 40 and the lower iron backing plate 70 are assembled and connected into a whole by the nylon sleeve 30 through a clamping structure, and form a pre-assembled body with the middle elastic backing plate 80, the lateral blocking shoulder 60 and the lateral blocking piece 50. The installation of the pre-assembled body can be realized, the optimal matching of the transverse stop dog and the transverse retaining shoulder can be realized, the processing size of parts can be reduced, and the stability, reliability and vibration reduction performance of the fastener can be improved. In practical application, when the upper iron backing plate 40 is transversely pressed by the steel rail 10 to move transversely, the transverse retaining shoulders 60 at the two sides of the upper iron backing plate play a transverse limiting role, and the transverse retaining shoulders 60 at the two sides achieve a bidirectional limiting design.
Referring to fig. 4, 5, 8 and 9, the assembly connection structure includes a T-shaped groove 74 disposed on the lower iron plate 70 and an inverted T-shaped retaining protrusion 64 correspondingly disposed at the bottom of the transverse retaining shoulder 60, the inverted T-shaped retaining protrusion 64 is inserted into the T-shaped groove 74, and the vertical contact surfaces thereof are provided with tooth-shaped structures engaged with each other. Referring to fig. 12, 13 and 14, the movable block 76 is inserted into the T-shaped groove 74 at the outer side of the T-shaped locking protrusion 64, and the lateral contact surfaces of the movable block 76 and the T-shaped groove 74 are provided with tooth-shaped structures which are engaged with each other, so that the lateral stop 50 is not loosened after the fastener is assembled in place, and the firmness and reliability of the fastener are ensured. After the transverse blocking shoulder 60 is installed, the movable clamping block 76 is installed in the gap between the transverse blocking shoulder 60 and the T-shaped groove 74 to fix the transverse blocking shoulder 60, so that the transverse blocking shoulder 60 is prevented from moving forwards and backwards.
Referring to fig. 2, fig. 3, fig. 8 and fig. 10, the clamping structure includes a protrusion 31 disposed on the inner wall of the nylon sleeve 30, a locking groove 73 correspondingly disposed on the outer wall of the hollow boss 72 of the lower iron shim plate 70, and a stepped flange 32 disposed on the upper portion of the nylon sleeve 30, the protrusion 31 of the nylon sleeve 30 and the locking groove 73 on the hollow boss 72 of the lower iron shim plate 70 form a concave-convex locking fit connection during assembly, and the stepped flange 32 on the upper portion of the nylon sleeve 30 is buckled on the surface of the upper iron shim plate 40.
When the upper iron backing plate 40, the transverse retaining shoulders 60 and the lower iron backing plate 70 are assembled, the transverse retaining shoulders 60 on the two sides move outwards, the assembling clearance distance is increased, and enough space can be provided for assembling. By moving the lateral stop shoulder 60 laterally, the upper iron backing plate 40, the middle elastic backing plate 80, the lower iron backing plate 70 and the lateral stop 50 are assembled and matched in place.
Referring to fig. 5, the lateral shoulder 60 is provided with ribs 63 at intervals on the outer sidewall.
Referring to fig. 7 and 11, elastic strip seats 43 for fixing elastic strips are arranged on two lateral sides of the upper iron backing plate 40, and one ends of the elastic strips press against the bottom edge of the steel rail 10. Referring to fig. 1 and 8, the upper end surface of the hollow boss 72 is a tooth-shaped structural surface, the locking cover plate 45 is fastened on the tooth-shaped structural surface, and the preassembled body is fixed on the ballast bed foundation by the anchor bolt 46 penetrating through the locking cover plate 45.
The foregoing is illustrative of the principles of the present invention for a shoulder double layer fastener and is not intended to limit the utility model to the exact construction and operation shown and described, and accordingly, all modifications and equivalents may be resorted to, falling within the scope of the utility model.
Claims (7)
1. The utility model provides a have to keep off double-deck damping fastener of shoulder, includes iron tie plate (40), lower iron tie plate (70) and sets up in middle elastic backing plate (80) between both faces, characterized by: transverse retaining shoulders (60) are fixedly arranged on the plate body at the two transverse sides of the lower iron base plate (70) through an assembly connection structure, inner transverse limiting surfaces (61) of the transverse retaining shoulders (60) at the two sides correspond to the outer transverse limiting surfaces (44) of the upper iron base plate (40), and a transverse stop block (50) is inserted between the inner transverse limiting surfaces and the outer transverse limiting surfaces; go up the horizontal both sides of indisputable backing plate (40) and be provided with assembly through-hole (41), correspond on lower indisputable backing plate (70) and set up by its plate body bellied cavity boss (72) that makes progress, cavity boss (72) insert corresponding assembly through-hole (41) in, by nylon cover (30) with indisputable backing plate (40), lower indisputable backing plate (70) be assembled between as an organic whole through the joint structure, and with middle elastic backing plate (80), horizontal fender shoulder (60) and horizontal dog (50) formation pre-assembly body.
2. The double-deck damping fastener of claim 1 having shoulders, wherein: the assembly connection structure comprises a T-shaped groove (74) arranged on a lower iron base plate (70) and an inverted T-shaped clamping protrusion (64) correspondingly arranged at the bottom of the transverse retaining shoulder (60), the inverted T-shaped clamping protrusion (64) is inserted into the T-shaped groove (74) matched with the T-shaped groove, and a vertical contact surface of the inverted T-shaped clamping protrusion is provided with a tooth-shaped structure which is meshed with each other.
3. The double-deck damping fastener of claim 2 having shoulders, wherein: in the T-shaped groove (74), a movable clamping block (76) is inserted into the outer side of the T-shaped clamping bulge (64), and the transverse contact surfaces of the movable clamping block (76) and the T-shaped groove (74) are provided with tooth-shaped structures which are meshed with each other.
4. The double-deck damping fastener of claim 1 having shoulders, wherein: the joint structure is including setting up arch (31) on nylon cover (30) inner wall and corresponding screens groove (73) of setting on iron backing plate (70) cavity boss (72) outer wall down to and set up ladder flange (32) on nylon cover (30) upper portion, the arch (31) of nylon cover (30) and screens groove (73) on iron backing plate (70) cavity boss (72) down form unsmooth screens cooperation and are connected during the assembly, nylon cover (30) upper portion ladder flange (32) are withheld on the face of last iron backing plate (40).
5. The double-deck damping fastener of claim 1 having shoulders, wherein: and reinforcing ribs (63) are arranged on the outer side wall of the transverse retaining shoulder (60) at intervals.
6. The double-deck damping fastener of claim 1 having shoulders, wherein: elastic strip seats (43) for fixing elastic strips are arranged on the two transverse sides of the upper iron base plate (40), and one ends of the elastic strips press the bottom edge of the steel rail (10).
7. The double-deck damping fastener of claim 1 having shoulders, wherein: the upper end surface of the hollow boss (72) is a tooth-shaped structural surface, the locking cover plate (45) is buckled on the tooth-shaped structural surface, and the pre-assembled body is fixed on the ballast bed foundation through an anchoring bolt (46) penetrating through the locking cover plate (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121279367.3U CN215668764U (en) | 2021-06-08 | 2021-06-08 | Double-layer vibration-damping fastener with shoulder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121279367.3U CN215668764U (en) | 2021-06-08 | 2021-06-08 | Double-layer vibration-damping fastener with shoulder |
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| Publication Number | Publication Date |
|---|---|
| CN215668764U true CN215668764U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121279367.3U Active CN215668764U (en) | 2021-06-08 | 2021-06-08 | Double-layer vibration-damping fastener with shoulder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
-
2021
- 2021-06-08 CN CN202121279367.3U patent/CN215668764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
| CN114790668B (en) * | 2022-04-25 | 2024-02-27 | 上海工程技术大学 | Low-height vibration reduction fastener with side block |
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