CN112048946A - Noise reduction vibration isolator for subway - Google Patents
Noise reduction vibration isolator for subway Download PDFInfo
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- CN112048946A CN112048946A CN202010848745.9A CN202010848745A CN112048946A CN 112048946 A CN112048946 A CN 112048946A CN 202010848745 A CN202010848745 A CN 202010848745A CN 112048946 A CN112048946 A CN 112048946A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
Abstract
The application discloses a noise-reducing vibration isolator for a subway, which comprises an upper bearing plate (1) for bearing a road plate and a lower bottom plate (2) arranged on base concrete, wherein the upper bearing plate (1) and the lower bottom plate (2) are arranged in parallel, and a shock-buffering pressure-bearing assembly and a pressure-bearing guide assembly are arranged between the upper bearing plate (1) and the lower bottom plate (2); the middle part of the pressure-bearing guide component is provided with a cavity, and the shock-absorbing pressure-bearing component is arranged in the cavity in the middle part of the pressure-bearing guide component. The invention has the advantages that: the transverse supporting force of the rubber vibration isolator to the steel rail and the floating plate is improved, and the supporting effect and the vibration isolation effect of the whole vibration isolator are guaranteed.
Description
Technical Field
The invention relates to a noise-reducing vibration isolator for a subway, and belongs to the field of subway construction equipment.
Background
The subway is an urban traffic system which covers various underground and overground roadways of urban areas, is special, high-density, high-traffic, rapid and dragged by electric power. The train runs on a totally closed line, the line located in the central urban area is basically arranged in the underground tunnel, and the line outside the central urban area is generally arranged on a viaduct or the ground.
When the subway train moves, the stress generated by the contact surface of the wheels and the steel rail also moves, the stress distribution in the motion is transmitted to the surrounding contact surface, a basic motion stress field is formed, and secondary vibration and noise of nearby underground structures and buildings are induced. Vibration tests show that vibration has a great influence on the safety of buildings along the line, the normal use of laboratories and the life of residents living around subways.
In order to reduce the vibration during the operation of the subway, a vibration isolator is used for vibration isolation. The existing vibration isolator mainly comprises a steel spring vibration isolator and a rubber vibration isolator, for example, the spiral steel spring vibration isolator is mostly selected in Germany subway, and the rubber vibration isolator is mostly used in British subway. The steel spring vibration isolator is low in vertical frequency, the horizontal rigidity of the support is equivalent to the vertical rigidity, the rigidity of the support is linear, but the transmission rate of high-frequency vibration is high, the requirement on the fatigue life is met, and the requirement on a steel spring material is high. The rubber vibration isolator has good vibration isolation effect on high-frequency vibration due to the damping characteristic of the rubber material, and has long fatigue life through a high-quality vulcanization process. The rubber vibration isolator has better vertical rigidity, but the horizontal rigidity of the rubber vibration isolator in the prior art is much smaller than the vertical rigidity, so that the rubber vibration isolator has the defect of lower transverse rigidity. In the subway running process, the rubber vibration isolator has weak transverse supporting force on the steel rail and the floating plate, and the using effect and the vibration isolation effect of the rubber vibration isolator are influenced.
Disclosure of Invention
Aiming at the problems existing in the prior art: the horizontal rigidity of the rubber vibration isolator in the prior art is much smaller than the vertical rigidity, so that the rubber vibration isolator has the defect of lower transverse rigidity. The technical scheme of the invention provides a noise reduction vibration isolator for subway, which overcomes the defects that the rubber vibration isolator has weak transverse supporting force on a steel rail and a floating slab and influences the use effect and vibration isolation effect of the rubber vibration isolator in the running process of the subway.
In order to solve the technical problem, the technical scheme adopted by the invention is that the noise-reducing vibration isolator for the subway comprises an upper bearing plate for bearing a road plate and a lower bottom plate arranged on base concrete, wherein the upper bearing plate and the lower bottom plate are arranged in parallel, and a shock-buffering pressure-bearing assembly and a pressure-bearing guide assembly are arranged between the upper bearing plate and the lower bottom plate; the middle part of the pressure-bearing guide component is provided with a cavity, and the shock absorption pressure-bearing component is arranged in the cavity in the middle part of the pressure-bearing guide component; the upper end and the lower end of the pressure-bearing guide assembly are respectively fixedly connected with the upper bearing plate and the lower bottom plate; the shock-absorbing bearing assembly comprises an upper movable part and a lower fixed part, the lower fixed part is fixedly connected with the lower bottom plate, and the upper movable part moves relative to the lower bottom plate and the lower fixed part along with the movement of the upper bearing plate.
Among the technical scheme of this application, upper portion bearing board is fixed in the lower surface of floating slab, the lower part bottom plate is fixed in on the base concrete, bradyseism pressure-bearing subassembly and pressure-bearing direction subassembly have been set up between upper portion bearing board and lower part bottom plate, the subway carries out the vibration isolation through bradyseism pressure-bearing subassembly through the vibrations that the rail transmits the high frequency pressure production to the floating slab at the in-process of traveling, pressure-bearing direction subassembly parcel sets up around bradyseism pressure-bearing subassembly, support bradyseism pressure-bearing subassembly through horizontal parcel, improve rubber vibration isolator's lateral support power, guarantee whole vibration isolator's supporting effect and vibration isolation effect.
Preferably, the pressure-bearing guide assembly of the subway noise reduction vibration isolator comprises an annular rubber seat, an upper end opening and a lower end opening of the rubber seat face the upper bearing plate and the bottom plate respectively, and the shock-absorption pressure-bearing assembly is arranged in the annular rubber seat; the annular inner surface of the rubber seat is conical, and the shape of the upper movable part is matched with that of the annular inner surface of the rubber seat.
In this application, use annular rubber seat as the pressure-bearing direction subassembly, when upper portion bearing board receives the extrusion to produce the vibration, the upper portion movable part removes in annular rubber seat, and rubber seat parcel upper portion movable part and restriction upper portion movable part's moving direction provides horizontal support for the upper portion movable part, improves the horizontal holding power of whole isolator.
Preferably, the end surface of the rubber seat facing the upper bearing plate is provided with an annular upper fixing seat, and the end surface of the rubber seat facing the lower bottom plate is provided with an annular lower fixing seat; the upper fixing seat is embedded in the rubber seat, and the upper end face of the upper fixing seat and the upper end face of the rubber seat are in the same plane; the lower fixing seat is embedded in the rubber seat, and the lower end face of the lower fixing seat and the lower end face of the rubber seat are in the same plane; the upper fixing seat, the lower fixing seat and the rubber seat are integrally vulcanized; the upper fixing seat is fixedly connected with the upper bearing plate through bolts, and the lower fixing seat is fixedly connected with the lower bottom plate through bolts.
In this application, the rubber seat is fixed with upper portion bearing board, lower part bottom plate through upper portion fixing base, lower part fixing base, and upper portion fixing base, lower part fixing base, rubber seat are whole to be vulcanized and form for upper portion fixing base, lower part fixing base, rubber seat have better bulk strength. The rubber seat can also bear the pressure between upper portion fixing base, the lower part fixing base and can keep apart the vibrations between upper portion fixing base, the lower part fixing base, because the rubber seat sets up to the annular and annular internal surface is the toper for the rubber seat can bear great lateral pressure, reduces the lateral deformation of isolator, improves the transverse strength of isolator.
Optimized, above-mentioned isolator of making an uproar falls in subway, upper portion movable part includes an upper portion plug column, and upper portion plug column is conical, and the conical bottom face of upper portion plug column sets up towards upper portion bearing board, and upper portion plug column pegs graft in the annular of rubber seat and the surface of upper portion plug column contacts with the annular internal surface of rubber seat.
In this application, the rubber mount acts as a guide for the upper support plate and absorbs vibrational energy. When the upper portion bearing plate receives vibrations influence and takes place to reciprocate, upper portion bearing plate extrusion upper portion grafting post for upper portion grafting post is through the removal extrusion rubber seat in the rubber seat, and at upper portion grafting post removal in-process, the rubber seat supports the upper portion grafting post and absorbs the vibration energy of upper portion grafting post transmission, can prevent that the upper portion grafting post from moving to the side, guarantees the transverse support power of whole isolator.
Preferably, the upper support plate of the subway noise reduction vibration isolator is provided with a connecting guide rod, one end of the connecting guide rod penetrates through the upper support plate and is in threaded connection with the upper support plate, the connecting guide rod penetrates through the upper insertion column and is in sliding connection with the upper insertion column, and a gap of 2-3 mm is formed between the end face, facing the upper support plate, of the upper insertion column and the upper support plate.
In this application, the upper portion plug column is connected with upper portion bearing board through connecting the guide bar, and when upper portion bearing board extrusion upper portion plug column, it leads and connects the guide bar and support the longitudinal strength of upper portion plug column to connect the guide bar for the relative movement of upper portion plug column, upper portion bearing board. The upper inserting column is made of metal materials, and a rubber pad can be arranged on the end face, facing the upper bearing plate, of the upper inserting column to prevent the impact noise from being too large. A gap of 2-3 mm is formed between the end face, facing the upper bearing plate, of the upper inserting column and the upper bearing plate, in the process that the upper bearing plate is pressed downwards, the rubber seat is firstly extruded, the rigidity of the rubber seat is increased after the rubber seat is compressed, better support can be provided for the upper inserting column, and then the upper bearing plate extrudes the upper inserting column to realize sectional type pressure-bearing shock absorption.
Preferably, the lower fixing part of the subway noise reduction vibration isolator comprises a lower cylinder, the lower cylinder is fixedly arranged on a lower bottom plate, an opening is formed in one end, facing the upper bearing plate, of the lower cylinder, a sliding groove matched with the lower cylinder is formed in the upper insertion column, and the lower cylinder is inserted in the sliding groove and is in sliding connection with the sliding groove; the connecting guide rod penetrates through the upper insertion column, the end part of the connecting guide rod is arranged in the lower cylinder, one end of the connecting guide rod, which is arranged in the lower cylinder, is connected with a bearing plate in a threaded manner, and damping viscous liquid is filled in the lower cylinder.
In this application, when upper portion bearing board vibrations and removal, the pressure-bearing piece of connecting guide bar and its tip removes in the damping viscous liquid in the barrel of lower part, through the effect of damping viscous liquid increase the removal damping of connecting guide bar, pressure-bearing piece and upper portion bearing board, reduces the vibrations of upper portion bearing board.
The lower part barrel is inserted in the sliding tray on the upper part inserting column in a plugging mode, the moving direction of the upper part inserting column is limited through the lower part barrel, the upper part inserting column is prevented from moving laterally, the upper part inserting column is enabled to have better transverse supporting strength through the external support of the rubber seat and the internal support of the lower part barrel, and further the integral transverse supporting strength of the vibration isolator is improved.
Preferably, the middle part of the surface of the lower bottom plate facing the upper bearing plate is provided with a groove; and a rubber buffer ring is arranged in the groove and is in contact with the upper insertion column and the inner wall of the groove.
In this application, realize the lower part buffering of upper portion grafting post through the rubber buffer ring in the recess, improve the vibration isolation ability of isolator.
Preferably, in the subway noise reduction vibration isolator, the inner bottom end surface of the groove is a plane and is arranged in parallel with the upper bearing plate, the upper section of the inner side wall of the groove is a cylindrical surface, and the lower section of the inner side wall of the groove is an arc surface; one part of the side wall of the rubber buffer ring is attached to the upper section of the inner side wall of the groove, and the other part of the side wall of the rubber buffer ring is attached to the lower section of the inner side wall of the groove; the lower section of the upper insertion column is inserted into the rubber buffer ring and is in contact with the rubber buffer ring.
In this application, set up the inside lateral wall hypomere of recess into the arcwall face, one of them part of rubber buffering circle and the arcwall face laminating of recess, the arcwall face through the recess supports the position of rubber buffering circle and separates the inside bottom face of rubber buffering circle and recess, and the interval between the inside bottom face of rubber buffering circle and recess improves buffering vibration isolation performance as the buffering cavity of rubber buffering circle.
Preferably, in the subway noise reduction vibration isolator, the lower end surface of the upper insertion column is an arc surface, and the lower end surface of the upper insertion column is attached to the annular inner surface of the rubber buffer ring; and damping viscous liquid is filled in the lower part of the groove.
In this application, through the arcwall face of upper portion plug-in post lower extreme and the contact of the damping viscous liquid in the recess, realize that the damping of upper portion plug-in post lower extreme strains and shakes to the damping viscous liquid in the recess can carry out the damping to the lower extreme of rubber cushion circle and strain and shake, carries out dual filtration through the damping viscous liquid in rubber cushion circle and the recess and shakes the lower extreme of upper portion plug-in post, guarantees that the isolator has better vibration isolation and strains the performance of shaking.
Drawings
FIG. 1 is a schematic view of the internal structure of embodiment 1 of the present invention;
fig. 2 is a schematic view of the internal structure of embodiment 2 of the present invention.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the invention relates to a noise-reducing vibration isolator for a subway, which comprises an upper supporting plate 1 for supporting a road plate and a lower bottom plate 2 arranged on base concrete, wherein the upper supporting plate 1 and the lower bottom plate 2 are arranged in parallel, and a shock-absorbing pressure-bearing assembly and a pressure-bearing guide assembly are arranged between the upper supporting plate 1 and the lower bottom plate 2; the middle part of the pressure-bearing guide component is provided with a cavity, and the shock absorption pressure-bearing component is arranged in the cavity in the middle part of the pressure-bearing guide component; the upper end and the lower end of the pressure-bearing guide assembly are respectively fixedly connected with an upper bearing plate 1 and a lower bottom plate 2; the shock-absorbing pressure-bearing assembly comprises an upper movable part and a lower fixed part, the lower fixed part is fixedly connected with the lower bottom plate 2, and the upper movable part moves relative to the lower bottom plate 2 and the lower fixed part along with the movement of the upper bearing plate 1.
Among the technical scheme of this application, upper portion bearing board 1 is fixed in the lower surface of floating slab, lower part bottom plate 2 is fixed in on the base concrete, set up bradyseism pressure-bearing subassembly and pressure-bearing direction subassembly between upper portion bearing board 1 and lower part bottom plate 2, the subway carries out the vibration isolation through bradyseism pressure-bearing subassembly through the vibrations that the high frequency pressure of rail transmission to floating slab produced at the in-process of traveling, pressure-bearing direction subassembly parcel sets up around bradyseism pressure-bearing subassembly, support bradyseism pressure-bearing subassembly through horizontal parcel, improve the horizontal holding power of rubber isolator to rail and floating slab, guarantee whole isolator's supporting effect and vibration isolation effect.
The pressure-bearing guide assembly comprises an annular rubber seat 3, an upper end opening and a lower end opening of the rubber seat 3 face the upper bearing plate 1 and the bottom plate 2 respectively, and the shock-absorbing pressure-bearing assembly is arranged in the annular rubber seat 3; the annular inner surface of the rubber seat 3 is conical, and the shape of the upper movable part is matched with the shape of the annular inner surface of the rubber seat 3.
In this application, use annular rubber seat 3 as the pressure-bearing guide assembly, when upper portion bearing board 1 received the extrusion and produces the vibration, the upper portion movable part removed in annular rubber seat 3, and 3 parcel upper portion movable parts of rubber seat limit the moving direction of upper portion movable part, provide horizontal support for the upper portion movable part, improve the lateral support power of whole isolator.
An annular upper fixing seat 4 is arranged on the end face, facing the upper bearing plate 1, of the rubber seat 3, and an annular lower fixing seat 5 is arranged on the end face, facing the lower bottom plate 2, of the rubber seat 3; the upper fixing seat 4 is embedded in the rubber seat 3, and the upper end face of the upper fixing seat 4 and the upper end face of the rubber seat 3 are in the same plane; the lower fixed seat 5 is embedded in the rubber seat 3, and the lower end face of the lower fixed seat 5 and the lower end face of the rubber seat 3 are in the same plane; the upper fixed seat 4, the lower fixed seat 5 and the rubber seat 3 are integrally vulcanized; the upper fixing seat 4 is fixedly connected with the upper bearing plate 1 through bolts, and the lower fixing seat 5 is fixedly connected with the lower base plate 2 through bolts.
In this application, rubber seat 3 is fixed with upper portion bearing board 1, lower part bottom plate 2 through upper portion fixing base 4, lower part fixing base 5, rubber seat 3 wholly vulcanizes and forms for upper portion fixing base 4, lower part fixing base 5, rubber seat 3 have better bulk strength. Rubber seat 3 can also bear the pressure between upper portion fixing base 4, the lower part fixing base 5 and can keep apart the vibrations between upper portion fixing base 4, the lower part fixing base 5, because rubber seat 3 sets up to the annular and annular internal surface is the toper for rubber seat 3 can bear great transverse pressure, reduces the transverse deformation of isolator, improves the transverse strength of isolator.
The upper movable part comprises an upper inserting column 6, the upper inserting column 6 is conical, the conical bottom end face of the upper inserting column 6 faces the upper bearing plate 1, the upper inserting column 6 is inserted into the ring of the rubber seat 3, and the outer surface of the upper inserting column 6 is in contact with the inner surface of the ring of the rubber seat 3.
In the present application, the rubber mount 3 serves as a guide member for the upper support plate 1 and absorbs vibration energy. When upper portion bearing board 1 receives vibrations influence to take place to reciprocate, upper portion bearing board 1 extrudes upper portion plug-in connection post 6 for upper portion plug-in connection post 6 extrudees rubber seat 3 through the removal in rubber seat 3, and at upper portion plug-in connection post 6 removal in-process, rubber seat 3 supports upper portion plug-in connection post 6 and absorbs the vibration energy of upper portion plug-in connection post 6 transmission, can prevent that upper portion plug-in connection post 6 from moving to the side, guarantees the horizontal holding power of whole isolator.
The upper supporting plate 1 is provided with a connecting guide rod 7, one end of the connecting guide rod 7 penetrates through the upper supporting plate 1 and is in threaded connection with the upper supporting plate 1, the connecting guide rod 7 penetrates through the upper inserting-connecting column 6 and is in sliding connection with the upper inserting-connecting column 6, and a gap of 2-3 mm is formed between the end face, facing the upper supporting plate 1, of the upper inserting-connecting column 6 and the upper supporting plate 1.
In this application, upper portion plug column 6 is connected with upper portion bearing board 1 through connecting guide bar 7, and when upper portion bearing board 1 extrudeed upper portion plug column 6, it leads and connects the longitudinal strength that guide bar 7 supported upper portion plug column 6 to connect guide bar 7 for the relative movement of upper portion plug column 6, upper portion bearing board 1. The upper inserting column 6 is made of metal, and a rubber pad can be arranged on the end face, facing the upper bearing plate 1, of the upper inserting column 6 to prevent overlarge impact noise. A2-3 mm gap is formed between the end face, facing the upper bearing plate 1, of the upper inserting column 6 and the upper bearing plate 1, the rubber seat 3 is firstly extruded in the process that the upper bearing plate 1 is pressed downwards, the rigidity of the rubber seat 3 is increased after the rubber seat 3 is compressed, better support can be provided for the upper inserting column 6, and then the upper bearing plate 1 extrudes the upper inserting column 6, so that sectional type pressure-bearing shock absorption is realized.
Lower part barrel 8 pegs graft in the sliding tray 9 on the post 6 is pegged graft on upper portion, through the moving direction of the post 6 is pegged graft on the restriction upper portion of lower part barrel 8, prevents the 6 lateral shifting of the post of pegging graft on upper portion, supports and makes the post 6 of pegging graft on upper portion have better horizontal support intensity through the outside of rubber seat 3 and the inside support of lower part barrel 8, and then improves the holistic horizontal support intensity of isolator.
The middle part of the surface of the lower bottom plate 2 facing the upper supporting plate 1 is provided with a groove 10; and a rubber buffer ring 11 is arranged in the groove 10, and the rubber buffer ring 11 is contacted with the upper insertion column 6 and the inner wall of the groove 10.
In the application, the lower part buffering of the upper part inserting column 6 is realized through the rubber buffering ring 11 in the groove 10, and the vibration isolation capacity of the vibration isolator is improved.
The inner bottom end surface of the groove 10 is a plane and is arranged in parallel with the upper bearing plate 1, the upper section of the inner side wall of the groove 10 is a cylindrical surface, and the lower section of the inner side wall of the groove 10 is an arc-shaped surface; one part of the side wall of the rubber buffer ring 11 is attached to the upper section of the inner side wall of the groove 10, and the other part of the side wall of the rubber buffer ring 11 is attached to the lower section of the inner side wall of the groove 10; the lower section of the upper inserting column 6 is inserted into the rubber buffer ring 11 and is contacted with the rubber buffer ring 11.
In this application, set up the inside lateral wall hypomere of recess 10 into the arcwall face, one of them part of rubber buffering circle 11 and the arcwall face laminating of recess 10, the arcwall face through recess 10 supports the position of rubber buffering circle 11 and separates the inside bottom face of rubber buffering circle 11 and recess 10, and the interval between the inside bottom face of rubber buffering circle 11 and recess 10 improves buffering vibration isolation performance as the buffering cavity of rubber buffering circle 11.
The lower end surface of the upper insertion column 6 is an arc surface, and the lower end surface of the upper insertion column 6 is attached to the annular inner surface of the rubber buffer ring 11; the lower part in the groove 10 is filled with damping viscous liquid.
In this application, through the arcwall face of upper portion plug-in post 6 lower extreme and the contact of the damping viscous liquid in the recess 10, realize that the damping of upper portion plug-in post 6 lower extreme strains and shakes to the damping viscous liquid in the recess 10 can carry out the damping to the lower extreme of rubber buffer ring 11 and strain and shake, carries out dual strain through the damping viscous liquid in rubber buffer ring 11 and the recess 10 and shakes to the lower extreme of upper portion plug-in post 6, guarantees that the isolator has better vibration isolation and strains the performance of shaking.
Example 2
As shown in fig. 2, this embodiment is different from embodiment 1 in that: the lower fixing part comprises a lower barrel 8, the lower barrel 8 is fixedly arranged on the lower bottom plate 2, an opening is formed in one end, facing the upper bearing plate 1, of the lower barrel 8, a sliding groove 9 matched with the lower barrel 8 is formed in the upper inserting column 6, and the lower barrel 8 is inserted into the sliding groove 9 and is in sliding connection with the sliding groove 9; the connecting guide rod 7 penetrates through the upper insertion column 6, the end part of the connecting guide rod is arranged in the lower cylinder 8, one end, arranged in the lower cylinder 8, of the connecting guide rod 7 is connected with a pressure bearing sheet 10 in a threaded mode, and damping viscous liquid is filled in the lower cylinder 8.
In the application, when the upper bearing plate 1 vibrates and moves, the bearing piece 10 connected with the guide rod 7 and the end part of the guide rod moves in damping viscous liquid in the lower cylinder 8, the movement damping of the guide rod 7, the bearing piece 10 and the upper bearing plate 1 is increased through the action of the damping viscous liquid, and the vibration of the upper bearing plate 1 is reduced.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a vibration isolator that makes an uproar falls in subway which characterized in that: the device comprises an upper bearing plate (1) for bearing a road plate and a lower bottom plate (2) arranged on base concrete, wherein the upper bearing plate (1) and the lower bottom plate (2) are arranged in parallel, and a shock absorption pressure-bearing assembly and a pressure-bearing guide assembly are arranged between the upper bearing plate (1) and the lower bottom plate (2); the middle part of the pressure-bearing guide component is provided with a cavity, and the shock absorption pressure-bearing component is arranged in the cavity in the middle part of the pressure-bearing guide component; the upper end and the lower end of the pressure-bearing guide assembly are respectively fixedly connected with an upper bearing plate (1) and a lower bottom plate (2); the shock-absorbing pressure-bearing assembly comprises an upper movable part and a lower fixed part, the lower fixed part is fixedly connected with the lower bottom plate (2), and the upper movable part moves relative to the lower bottom plate (2) and the lower fixed part along with the movement of the upper bearing plate (1).
2. The noise-reducing vibration isolator for subways of claim 1, wherein: the pressure-bearing guide assembly comprises an annular rubber seat (3), an upper end opening and a lower end opening of the rubber seat (3) face the upper bearing plate (1) and the bottom plate (2) respectively, and the shock absorption pressure-bearing assembly is arranged in the annular rubber seat (3); the annular inner surface of the rubber seat (3) is conical, and the shape of the upper movable part is matched with the shape of the annular inner surface of the rubber seat (3).
3. The noise-reducing vibration isolator for subways according to claim 2, wherein: an annular upper fixing seat (4) is arranged on the end face, facing the upper bearing plate (1), of the rubber seat (3), and an annular lower fixing seat (5) is arranged on the end face, facing the lower bottom plate (2), of the rubber seat (3); the upper fixing seat (4) is embedded in the rubber seat (3), and the upper end face of the upper fixing seat (4) and the upper end face of the rubber seat (3) are in the same plane; the lower fixing seat (5) is embedded in the rubber seat (3), and the lower end face of the lower fixing seat (5) and the lower end face of the rubber seat (3) are in the same plane; the upper fixed seat (4), the lower fixed seat (5) and the rubber seat (3) are integrally vulcanized; the upper fixing seat (4) is fixedly connected with the upper bearing plate (1) through bolts, and the lower fixing seat (5) is fixedly connected with the lower bottom plate (2) through bolts.
4. The noise-reducing vibration isolator for subways according to claim 2, wherein: the upper movable part comprises an upper inserting column (6), the upper inserting column (6) is conical, the conical bottom end face of the upper inserting column (6) faces the upper bearing plate (1), the upper inserting column (6) is inserted into the ring of the rubber seat (3), and the outer surface of the upper inserting column (6) is in contact with the inner surface of the ring of the rubber seat (3).
5. The noise-reducing vibration isolator for subways of claim 4, wherein: the upper portion bearing plate (1) is provided with a connecting guide rod (7), one end of the connecting guide rod (7) penetrates through the upper portion bearing plate (1) and is in threaded connection with the upper portion bearing plate (1), the connecting guide rod (7) penetrates through the upper portion inserting column (6) and is in sliding connection with the upper portion inserting column (6), and a gap of 2-3 mm is formed between the end face, facing the upper portion bearing plate (1), of the upper portion inserting column (6) and the upper portion bearing plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010848745.9A CN112048946B (en) | 2020-08-21 | 2020-08-21 | Noise reduction vibration isolator for subway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010848745.9A CN112048946B (en) | 2020-08-21 | 2020-08-21 | Noise reduction vibration isolator for subway |
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| CN112048946A true CN112048946A (en) | 2020-12-08 |
| CN112048946B CN112048946B (en) | 2022-02-11 |
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| CN203702951U (en) * | 2014-02-27 | 2014-07-09 | 北京航材百慕合力高分子材料有限公司 | V-shaped rubber supporting part |
| CN104805740A (en) * | 2015-03-03 | 2015-07-29 | 中国船舶重工集团公司第七一一研究所 | Rubber vibration isolator for rail transit floating slab track bed vibration isolation system |
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- 2020-08-21 CN CN202010848745.9A patent/CN112048946B/en active Active
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|---|---|---|---|---|
| DE2828714A1 (en) * | 1978-06-30 | 1980-01-10 | Clouth Gummiwerke Ag | Sound attenuating machine foundation - has rubber-metal bearing at angle between periphery of foundation plate and ground |
| CN2752538Y (en) * | 2004-12-24 | 2006-01-18 | 中国船舶重工集团公司第七一一研究所 | Low-frequency large-loading rubber vibration isolator |
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| CN203702951U (en) * | 2014-02-27 | 2014-07-09 | 北京航材百慕合力高分子材料有限公司 | V-shaped rubber supporting part |
| CN104805740A (en) * | 2015-03-03 | 2015-07-29 | 中国船舶重工集团公司第七一一研究所 | Rubber vibration isolator for rail transit floating slab track bed vibration isolation system |
| CN210134298U (en) * | 2019-04-11 | 2020-03-10 | 陕西九域通创轨道系统技术有限责任公司 | Nonlinear vibration isolator for track traffic floating slab track system |
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| CN112048946B (en) | 2022-02-11 |
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Address after: 225800 No.5 No.6 workshop, Anyi Industrial Park, Baoying County, Yangzhou City, Jiangsu Province Patentee after: Qihao Precision Machinery (Yangzhou) Co.,Ltd. Address before: 225800 No.5 No.6 workshop, Anyi Industrial Park, Baoying County, Yangzhou City, Jiangsu Province Patentee before: JIANGSU QIHAO PRECISION MACHINERY Co.,Ltd. |
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