CN210420730U - Shoulder-blocking type vibration-damping fastener suitable for subway main line - Google Patents
Shoulder-blocking type vibration-damping fastener suitable for subway main line Download PDFInfo
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- CN210420730U CN210420730U CN201920771016.0U CN201920771016U CN210420730U CN 210420730 U CN210420730 U CN 210420730U CN 201920771016 U CN201920771016 U CN 201920771016U CN 210420730 U CN210420730 U CN 210420730U
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Abstract
The utility model discloses a shoulder-blocking type vibration damping fastener suitable for subway main lines, which comprises a steel rail and a short sleeper, wherein a rail lower base plate, a base iron base plate, a special-shaped vibration isolation pad, a floating iron base plate and a rail upper base plate are sequentially and upwards arranged between the steel rail and the short sleeper, a special-shaped cavity is arranged in the middle of the base iron base plate, and the special-shaped vibration isolation pad is arranged in the special-shaped cavity; the edge of the special-shaped cavity close to the shoulder is provided with an arc-shaped gap, and arc-shaped bosses matched with the arc-shaped gap are arranged on two sides of the vibration isolation pad; two sides of the base iron base plate are provided with retaining shoulders, and one side of each retaining shoulder is provided with a hand lifting frame; a side elastic body is clamped between the blocking shoulder of the base iron base plate and the outer side wall of the floating iron base plate. This fastener, compact structure, easily dismouting is carried on spacingly transversely and vertically simultaneously, has good vibration isolation performance guaranteeing to have under driving safety.
Description
Technical Field
The utility model relates to an urban rail transit damping fastener technical field especially relates to a keep off shoulder formula damping fastener that is suitable for subway main line.
Background
When a train runs, the vibration of the wheel track easily causes vibration pollution to surrounding buildings and indoor secondary structure noise. The vibration reduction fasteners are adopted on the rails, so that an effective way for solving the problem is achieved, and particularly in the field of urban rail transit, the vibration reduction fasteners are used in a large quantity.
The main functions of vibration-damping fasteners generally include the following categories, namely: driving safety performance, damping performance, easy dismouting performance, track adjustment performance, etc. The method specifically comprises the steps of firmly fixing the steel rail on a track bed and preventing hard impact of wheel rails so as to provide proper buffering capacity for driving safety; how to prevent the problem of rail creeping caused by longitudinal load; how to increase the transverse rigidity of the steel rail and reduce the transverse displacement caused by the transverse force of the wheel rail, and the like. For the vibration isolation performance, the vibration isolation device mainly relates to how to reduce the vertical rigidity of the fastener, realize the vibration attenuation of the track through larger vertical buffer displacement under the vertical load of the train, and the like.
When the vibration-damping fastener is used for replacing the existing common fastener of the line, the original sleeper and the screw track nail hole on the sleeper are required to be directly used for installation, and the height of the steel rail is required to be kept the same after the installation. At this moment, the design space of the damping fastener is limited in the narrow and small geometric dimension reserved by the original common fastener, and the designed damping fastener is required to ensure the driving safety, has larger vibration isolation capacity and can be replaced quickly.
The existing various vibration damping fasteners utilize respective structural forms and methods to achieve the design goal, and the achieving effects of the vibration damping fasteners are different, so that the comprehensive properties including vibration isolation amount are different. So far, the types of vibration-damping fasteners with high vibration-isolating capacity are still few, and how to design the vibration-damping fasteners which can ensure the driving safety and have high vibration-isolating capacity is still an important research direction in the field of rail transit, especially urban rail transit.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, the utility model aims at providing a keep off shoulder formula damping fastener that is suitable for subway main line, compact structure, easily dismouting is horizontal and vertically carry on spacingly simultaneously, has good vibration isolation performance under guaranteeing driving safety.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a keep off shoulder formula damping fastener that is suitable for subway main line, includes rail, short sleeper, upwards set up rail lower bolster, base iron tie plate, abnormal shape vibration isolator, floating iron tie plate and rail lower bolster in proper order between rail and short sleeper be provided with square boss on base iron tie plate diagonal angle, set up the locating hole of installation anchor screw on its another diagonal angle, seted up the quad slit in the square boss, and its circumference is equipped with spacing boss, abnormal shape cavity has been seted up at base iron tie plate middle part, abnormal shape vibration isolator is overlapped and is located in the abnormal shape cavity, arc breach has been seted up at abnormal shape cavity both sides middle part, abnormal shape vibration isolator both sides are provided with the arc boss that matches with the arc breach.
Preferably, the two sides of the base iron base plate are provided with retaining shoulders, one side of each retaining shoulder is provided with a lifting handle frame, and a side elastic body is clamped between each retaining shoulder of the base iron base plate and the outer side wall of the floating iron base plate.
Preferably, the middle part of the special-shaped vibration isolator is provided with a circular truncated cone which is arranged in 5 rows and 5 columns.
Preferably, the rail lower backing plate is provided with a through hole corresponding to the positioning hole; the steel rail, the lower rail base plate, the base iron base plate, the special-shaped vibration isolation pad, the floating iron base plate, the lower rail base plate and the short sleeper are fixed through the positioning holes.
Preferably, the blocking shoulder is provided with at least two pin holes, and the side elastic body is provided with a pin matched with the pin holes.
Preferably, the side elastomer is of a layered structure and is vulcanized in one piece.
The utility model has the advantages that: compared with the prior art, the installed anchor screw positioning holes are only two, and the positions of the anchor screw positioning holes are fixed, so that the requirement that the whole height of the vibration reduction fastener is reduced, and the vibration reduction fastener is convenient to install is met. In order to enable the height of the vibration damping fastener to be reduced, the whole vibration isolation performance is not weakened, the special-shaped cavity is arranged in the middle of the base plate, the special-shaped vibration isolation pad is arranged in the special-shaped cavity, therefore, the total height of the vibration damping fastener can be reduced, the steel rail height limiting condition reserved by the original fastener is easily met, and the vibration isolation pad can be limited under vibration, the vibration isolation performance is improved while the vibration isolation area is increased, arc notches are formed in two sides of the special-shaped cavity, arc bosses matched with the arc notches are arranged on two sides of the special-shaped vibration isolation pad, and the vibration isolation performance is improved while the vibration isolation area is further increased. The side elastic body with the layered structure has the properties of high extrusion rigidity and low shearing rigidity, so that the lateral displacement and the overturning displacement of the floating iron base plate are greatly restrained, and the vertical restraint of the floating iron base plate is very small; the handle arranged on the blocking shoulder facilitates the carrying and installation of the fastener. This damping fastener compact structure, the installation suitability is strong, and transport easy dismounting has good vibration isolation performance under guaranteeing driving safety.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the base iron backing plate of the present invention;
FIG. 3 is a schematic view of the structure of the cavity of the base iron backing plate of the present invention;
fig. 4 is a schematic view of the structure of the side elastomer of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.
Referring to fig. 1-4, a shoulder type vibration damping fastener suitable for a subway main line comprises a steel rail 1 and a short sleeper 2, wherein a rail lower base plate, a base iron base plate 4, a special-shaped vibration isolation pad 5, a floating iron base plate 6 and a rail upper base plate (it should be noted that the rail lower base plate and the rail lower base plate are all universal technologies of the existing vibration damping fastener, so that the rail lower base plate and the rail lower base plate are not marked in fig. 1) are sequentially and upwards arranged between the steel rail 1 and the short sleeper 2, a square boss 10 is arranged on one diagonal of the base iron base plate 4, a positioning hole 13 for installing an anchoring screw is formed in the other diagonal of the base iron base plate, and the requirement of installing the vibration damping fastener on site is met by the arrangement of the positioning hole 13. A square hole 102 is formed in the square boss 10, a limiting boss 101 is arranged in the circumferential direction of the square boss, and the limiting boss 101 prevents the special-shaped vibration isolator 5 from falling off in the transportation and installation processes. The special-shaped cavity 41 is formed in the middle of the base iron base plate 4, the special-shaped vibration isolating pad 5 is sleeved in the special-shaped cavity 41, the special-shaped cavity 41 and the special-shaped vibration isolating pad 5 are arranged, the vibration damping performance of the vibration isolating fastener is improved while the vibration damping area of the vibration isolating fastener is increased, the special-shaped cavity 41 is sleeved with the special-shaped vibration isolating pad 5, and the height of the vibration isolating fastener is reduced by reducing the height of the special-shaped vibration isolating pad 5. In order to improve the vibration isolation performance, increase the area of the special-shaped vibration isolation pad 5, limit the special-shaped vibration isolation pad 5 and reduce the displacement of the special-shaped vibration isolation pad 5 on the base iron base plate 4, arc-shaped notches 42 are formed in the middle parts of two sides of the special-shaped cavity 41, and arc-shaped bosses 52 matched with the arc-shaped notches 42 are arranged on two sides of the special-shaped vibration isolation pad 5. The arrangement of the arc-shaped notch 42 and the arc-shaped boss 52 further increases the damping area of the damping fastener and improves the damping performance of the damping fastener.
Referring to fig. 4, in order to facilitate clamping of the elastic body 9, two sides of the base iron backing plate 4 are provided with a shoulder 8, in order to facilitate carrying and installation of the vibration damping fastener, one side of the shoulder 8 is provided with a handle frame 81, and the side elastic body 9 is clamped between the shoulder 8 of the base iron backing plate 4 and the outer side wall of the floating iron backing plate 6.
Referring to fig. 2, in order to improve the vibration damping performance of the vibration damping fastener, the middle of the special-shaped vibration isolator 5 is provided with 5 rows and 5 columns of round platforms 51.
In order to facilitate the installation of the vibration damping fastener, a through hole (marked in fig. 1) corresponding to the positioning hole 13 is formed in the rail lower backing plate; the steel rail 1, the lower rail base plate, the base iron base plate 4, the special-shaped vibration isolation pad 5, the floating iron base plate 6, the lower rail base plate and the short sleeper 2 are fixed through the positioning holes 13.
Referring to fig. 2, in order to easily restrain the lateral displacement and the turning displacement of the floating iron pad 6 and make the restraint of the vertical displacement small, at least two pin holes 14 are arranged on the shoulder 8, and a pin 15 matched with the pin holes 14 is arranged on the side elastic body 9.
In order to increase the high extrusion stiffness and the low shear stiffness of the side elastomer 9, the side elastomer 9 is of a layered structure and is vulcanized in one piece. The layered structure includes a first metal plate 91 and a second metal plate 92 disposed opposite to each other on both sides, and thin rubber layers 93 and metal sheets 94 alternately interposed between the first metal plate 91 and the second metal plate 92. Under the action of the self-locking nut and the pre-pressing spring, the contact surface of the inner side surface of the retaining shoulder 8 and the side surface elastic body 9 keeps the same inclination angle.
In this embodiment, it should be noted that:
the manufacturing errors of the smoothness and the verticality of the inner wall of the retaining shoulder 8 arranged on the base iron base plate 4 need to be strictly controlled, and the problem of overlarge deflection of the side elastic body 9 during expected installation is prevented. The deflection within the tolerance range can be automatically compensated by the elasticity of the side elastic bodies 9.
The special-shaped vibration isolator 5 is a main part for determining the vibration isolation performance of the fastener, is made of low-rigidity elastic materials with good rebound resilience and fatigue resistance, and can be selected from thermoplastic elastomers and thermosetting elastomers.
The flatness of the outer side surface of the floating iron shim plate 6 and the inner side surface of the retaining shoulder 8 and the manufacturing errors of the inclination angle of the two need to be strictly controlled. Their problem of incomplete coincidence within the tolerance range can be automatically compensated by the elasticity of the lateral elastic bodies 9. The double-ended screw spike mounting hole arranged on the floating iron base plate 6 is large enough, so that the hexagonal stop block in the double-ended screw spike can freely come in and go out from the double-ended screw spike in the field installation and debugging process.
The rubber material of the rubber thin layer of the side elastic body 9 needs to be selected from materials with long fatigue life and good rebound resilience. In the vulcanization process, the working procedures of cleaning the metal plate, blasting sand, smearing adhesive, pressurizing, heating and the like need to be strictly executed according to requirements, and the problems of degumming, rubber aging and the like in the use process are prevented.
During installation, the pin 15 of the side elastic body 9 is placed in the pin hole 14 on the retaining shoulder 8 of the base iron backing plate 4; under the action of the self-locking nut and the pre-pressing spring, the outer side surface of the floating iron base plate 6 is tightly attached to the inner side surface of the side elastic body 9, and no connection measure exists between the outer side surface of the floating iron base plate 6 and the inner side surface of the side elastic body 9, so that the floating iron base plate belongs to a natural pressing state under the action of external force; a special-shaped vibration isolator 5 and an insulating wear-resistant sleeve are arranged between the floating iron base plate 6 and the base iron base plate 4, so that the floating iron base plate 6 and the base iron base plate 4 are isolated by the vibration isolator 5 in the vertical direction and are isolated by the insulating wear-resistant sleeve in the longitudinal direction of the track; the steel rail 1 and the rail upper backing plate are tightly pressed on the floating iron backing plate 6 by using elastic strips, T-shaped bolts, nuts and gauge blocks, wherein the T-shaped bolts are arranged on the floating iron backing plate 6; the base iron base plate 4 and the rail upper base plate are fastened on the short sleeper 2 through double-head spiral spikes, and the floating iron base plate is pressed on the upper surface of the vibration isolation pad through the locknut and the pre-pressing spring.
The fastener has the advantages of compact structure, high reliability and good vibration isolation performance under the condition of ensuring the driving safety by convenient assembly and disassembly.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A shoulder-blocking type vibration-damping fastener suitable for a subway main line comprises a steel rail (1) and a short sleeper (2), a rail lower base plate, a base iron base plate (4), a special-shaped vibration isolation pad (5), a floating iron base plate (6) and a rail upper base plate are sequentially arranged between the steel rail (1) and the short sleeper (2) upwards, it is characterized in that a square boss (10) is arranged on one diagonal of the base iron backing plate (4), the other diagonal of the square boss is provided with a positioning hole (13) for installing an anchoring screw, a square hole (102) is arranged in the square boss (10), a limit boss (101) is arranged on the circumference of the base, a special-shaped cavity (41) is arranged in the middle of the base iron backing plate (4), the special-shaped vibration isolation pad (5) is sleeved in the special-shaped cavity (41), the middle parts of two sides of the special-shaped cavity (41) are provided with arc-shaped notches (42), arc-shaped bosses (52) matched with the arc-shaped notches (42) are arranged on two sides of the special-shaped vibration isolation pad (5).
2. The shoulder type vibration damping fastener suitable for the subway main line according to claim 1, wherein the base iron backing plate (4) is provided with shoulders (8) at both sides, a lifting handle frame (81) is arranged at one side of the shoulders (8), and a side elastic body (9) is clamped between the shoulders (8) of the base iron backing plate (4) and the outer side wall of the floating iron backing plate (6).
3. The shouldering type vibration damping fastener suitable for the subway main line as claimed in claim 2, wherein the shaped vibration isolating pad (5) is provided with a circular truncated cone (51) arranged in 5 rows and 5 columns in the middle.
4. The shoulder-blocking type vibration-damping fastener suitable for the subway main line according to claim 3, wherein: the side surface elastic body (9) is provided with a pin (15) matched with the pin hole (14).
5. The shoulder-blocking type vibration-damping fastener suitable for the subway main line according to claim 4, wherein: the side elastic body (9) is of a layered structure and is vulcanized integrally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771016.0U CN210420730U (en) | 2019-05-27 | 2019-05-27 | Shoulder-blocking type vibration-damping fastener suitable for subway main line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771016.0U CN210420730U (en) | 2019-05-27 | 2019-05-27 | Shoulder-blocking type vibration-damping fastener suitable for subway main line |
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| CN210420730U true CN210420730U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920771016.0U Active CN210420730U (en) | 2019-05-27 | 2019-05-27 | Shoulder-blocking type vibration-damping fastener suitable for subway main line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117922A (en) * | 2019-05-27 | 2019-08-13 | 西安卓控环保科技有限公司 | A kind of shoulder block formula Damping fastening suitable for subway main track |
| CN112681025A (en) * | 2020-12-30 | 2021-04-20 | 无锡市青山铁路器材有限公司 | Novel damping fastener |
-
2019
- 2019-05-27 CN CN201920771016.0U patent/CN210420730U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117922A (en) * | 2019-05-27 | 2019-08-13 | 西安卓控环保科技有限公司 | A kind of shoulder block formula Damping fastening suitable for subway main track |
| CN112681025A (en) * | 2020-12-30 | 2021-04-20 | 无锡市青山铁路器材有限公司 | Novel damping fastener |
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Address after: 610000 room 03, floor 9, building 3, No. 25, Jinlu Second Road, Wuhou District, Chengdu, Sichuan Province Patentee after: Chengdu zhuokong Environmental Protection Technology Co.,Ltd. Address before: Room B509, Shaanxi Science and Technology Resources Planning Center, No. 10, Zhangba Fifth Road, Hi tech Zone, Xi'an, Shaanxi 710077 Patentee before: XI'AN ZHUOKONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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