CN113005934B - Closed urban rail sound barrier - Google Patents
Closed urban rail sound barrier Download PDFInfo
- Publication number
- CN113005934B CN113005934B CN202110258409.3A CN202110258409A CN113005934B CN 113005934 B CN113005934 B CN 113005934B CN 202110258409 A CN202110258409 A CN 202110258409A CN 113005934 B CN113005934 B CN 113005934B
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- barrier
- barriers
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- base
- fixedly connected
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
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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
- E01B26/00—Tracks or track components not covered by any one of the preceding groups
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
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Abstract
The invention relates to the field of rail transit, and particularly discloses a closed sound barrier for urban rails, which comprises traffic rails, wherein bases fixed on the ground are arranged on two sides of the traffic rail, slide rails are fixedly connected on the bases, the slide rails are vertical to the traffic rails, the slide rails are connected with bases in a sliding manner, and pushing cylinders used for pushing the bases to slide are fixed on the bases; the base is fixedly connected with vertical barriers, transverse barriers are arranged between the vertical barriers and comprise horizontal barriers, sliding grooves which are horizontally arranged are formed in two sides of each horizontal barrier, connecting barriers are connected in the sliding grooves in a sliding mode, and the connecting barriers are fixedly connected to the top ends of the corresponding vertical barriers respectively; two symmetrical control cylinders are arranged on the traffic track, and stress blocks are arranged at the top ends of the control cylinders; the invention aims to solve the problem that when a vehicle passes through a closed sound barrier, the ear discomfort of a passenger is caused by obvious pressure difference change inside and outside the vehicle.
Description
Technical Field
The invention relates to the technical field of rail transit, and particularly discloses a closed sound barrier for urban rails.
Background
Currently, sound barriers have been used as the most effective means for noise control of railway, urban rail transit and highway traffic, and especially in recent years, cities develop rapidly, and rail transit lines passing through urban areas have great influence on the urban sound environment. The main structural types of sound barriers include: the noise reduction effect of the vertical sound barrier can reach 6-10dB generally, the noise reduction effect of the semi-closed sound barrier can reach 9-15dB generally, and when the noise barrier with the noise reduction of 15dB or above is required, a fully-closed structure is required.
When vehicles such as trains pass through the sound barrier, the totally enclosed sound barrier forms a relatively enclosed area, the trains almost drive all air in the enclosed area to move at high speed, and therefore the air can only be supplemented by the air from the inside of the trains, so that the air pressure in the train is very low, the pressure difference between the inside and the outside of the vehicles is changed violently, and the situation that the pressure inside and the outside of the middle ears of passengers is unbalanced, so that ears are blocked or the ears are tinnitus, pain and other uncomfortable conditions occur.
Disclosure of Invention
The invention aims to provide a closed sound barrier for urban rails, and solves the problem that when a vehicle passes through the closed sound barrier, the ear discomfort of a passenger is caused due to obvious pressure difference change inside and outside the vehicle.
In order to achieve the purpose, the basic scheme of the invention is as follows:
the closed sound barrier for the urban rails comprises traffic rails, wherein bases fixed on the ground are arranged on two sides of traffic of the traffic rails, sliding rails are fixedly connected to the bases and are perpendicular to the traffic rails, bases are connected to the sliding rails in a sliding mode, and pushing cylinders used for pushing the bases to slide are fixed to the bases; the base is fixedly connected with vertical barriers, transverse barriers are arranged between the vertical barriers and comprise horizontal barriers, sliding grooves which are horizontally arranged are formed in two sides of each horizontal barrier, connecting barriers are connected in the sliding grooves in a sliding mode, and the connecting barriers are fixedly connected to the top ends of the corresponding vertical barriers respectively; two symmetrical control cylinders are arranged on the traffic track, pipelines are communicated between the rodless cavities of the control cylinders and the rodless cavities of the corresponding telescopic cylinders respectively, a return spring is fixed between the rodless cavity of the control cylinder and the piston, and a stress block is arranged at the top end of the control cylinder; the vertical barrier further comprises a middle barrier and end barriers at two ends, and the connecting barrier is fixedly connected with the middle barrier; the two ends of the middle barrier are rotatably connected with vertically arranged rotating shafts, the end barriers are fixed on the rotating shafts, and the bottoms of the rotating shafts are fixedly connected with coaxial gears; all set up the recess that is on a parallel with the slide rail on the base, all be fixed with the tooth with gear engagement on the lateral wall that the recess is close to the middle part protective screen.
Optionally, the base is provided with a concave cavity, the control cylinder and the slide rail are fixed in the corresponding concave cavity, the bottom of the middle barrier is not in the concave cavity, and the end barriers are higher than the concave cavity; be fixed with the arc on the cavity keeps away from traffic track's the lateral wall, sliding connection has the arc protective screen with the arc laminating on the arc, and the arc protective screen is the same with the radian of arc, and arc protective screen top articulates there is the connecting seat, and the vertical sliding connection of connecting seat is on middle part protective screen lateral wall.
Optionally, the two sides of the middle barrier are both fixed with a support seat, and the other end of the support seat is fixedly connected with the base.
Optionally, the top end of the force-bearing block is an inclined surface, and the inclined surface is inclined towards the direction of the traffic track.
Optionally, a stiffener is fixed between the connecting barrier and the middle barrier.
Optionally, the middle barrier, the end barriers and the connecting barrier are all formed by compounding a transparent acrylic acoustic panel and an aluminum acoustic panel.
The working principle and the beneficial effects of the scheme are as follows:
1. in the scheme, when rail vehicles such as trains and the like drive into the closed sound barrier, air in the rodless cavity of the control cylinder is extruded into the rodless cavity of the pushing cylinder through the vehicle overstocked stress block, so that the bases on the two sides are pushed to slide towards opposite directions, the vertical barriers on the two sides are driven to slide in opposite directions, the horizontal barrier and the connecting barrier are kept connected with the vertical barriers on the two sides, the closed sound barrier is ensured, and the sound insulation effect of the sound barrier is ensured; and vertical barrier towards opposite direction slip in-process, the space grow that the sound barrier formed lets in the air can be better gets into the sound barrier, plays the air that fills in the sound barrier, is convenient for the air supply to the car in to reduce the inside and outside pressure change of car in the sound barrier region, reduce the inside and outside atmospheric pressure change condition of passenger middle ear promptly, improve passenger ear's comfort.
2. In this scheme, when vertical protective screen slided towards opposite direction, the gear received the influence of tooth to drive the pivot and rotates, and the pivot then drives the swing of tip protective screen to with the bore grow of sound barrier both ends port department, further improve the efficiency that the air entered into in the sound barrier, reach the effect that reduces the pressure variation condition in the sound barrier region.
3. In the scheme, the middle barrier and the base are in a slidable connection relationship, so that noise is easily transmitted through the gap, and the noise reduction effect is poor; and after noise reduction treatment is carried out on the noise generated by the train through the sound barrier, the sound is transmitted to the arc-shaped plate through the gap between the cavity and the middle barrier, a second closed type sound barrier is formed between the arc-shaped plate and the arc-shaped barrier and between the arc-shaped plate and the middle barrier, and noise reduction treatment is carried out again, so that the noise reduction effect is further improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a transverse cross-sectional view of a base in an embodiment of the invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a longitudinal sectional view of a control cylinder in the embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a traffic track 1, a base 2, a sliding rail 3, a base 4, a horizontal barrier 5, a connecting barrier 6, a control cylinder 7, a pipeline 8, a stress block 9, a return spring 10, a middle barrier 11, an end barrier 12, a rotating shaft 13, a gear 14, a groove 15, teeth 16, a cavity 17, an arc plate 18, an arc barrier 19, a connecting seat 20, a supporting seat 21, a reinforcing rib 22 and a pushing cylinder 23.
Examples
As shown in fig. 1, 2, 3 and 4:
the closed type sound barrier for the urban rails comprises a traffic rail 1 and a base 2, wherein the traffic rail 1 is provided with bases 2 fixed on the ground, the bases 2 are fixedly connected with slide rails 3, the slide rails 3 are perpendicular to the traffic rail 1, the slide rails 3 are connected with a base 4 in a sliding manner, and the bases 2 are respectively fixed with a pushing cylinder 23 used for pushing the base 4 to slide; the base 4 is fixedly connected with vertical barriers, transverse barriers are arranged between the vertical barriers and comprise horizontal barriers 5, sliding grooves are horizontally formed in two sides of each horizontal barrier 5, connecting barriers 6 are connected in the sliding grooves in a sliding mode, and the connecting barriers 6 are respectively and fixedly connected to the top ends of the corresponding vertical barriers; the traffic track 1 is provided with two symmetrical control cylinders 7, the bottoms of the control cylinders 7 are not fixed on the ground, the rodless cavities of the control cylinders 7 are respectively communicated with the rodless cavities of the corresponding telescopic cylinders through pipelines 8, return springs 10 are fixed between the rodless cavities of the control cylinders 7 and the pistons, and the top ends of the control cylinders 7 are provided with stress blocks 9.
When rail vehicles such as trains and the like drive into the closed sound barrier, the gas in the rodless cavity of the control cylinder 7 is extruded into the rodless cavity of the push cylinder 23 through the pipeline 8 by the aid of the vehicle overstocked stress block 9, pressure in the rodless cavity of the push cylinder 23 is increased, so that the bases 4 on two sides are pushed to slide in opposite directions, the vertical barriers on two sides are driven to slide in opposite directions, and the horizontal barrier 5 and the connecting barrier 6 are in sliding connection, so that the closed sound barrier is still formed in the sliding process of the vertical barriers on the top, and the sound insulation effect of the sound barrier is guaranteed; and vertical barrier towards opposite direction slip in-process, the space grow that the sound barrier formed, in the entering sound barrier that the air in the outside of being convenient for can be better, fill the air in the sound barrier, the air of being convenient for supplyes to the car in, thereby reduce the inside and outside pressure change of the car in the sound barrier region, it is little to reduce the inside and outside atmospheric pressure change of passenger middle ear promptly, improve passenger ear's comfort, reduce the inside and outside atmospheric pressure change condition of passenger middle ear promptly, improve passenger ear's comfort.
In addition, the larger the weight and the speed of the train are, the larger the force of the stress block 9 extruded by the train is, so that the volume of the air extruded from the rodless cavity of the control cylinder 7 to the rodless cavity of the push cylinder 23 is increased, the distance of the push cylinder 23 pushing the base 4 is prolonged, the space in the sound barrier is larger, the air inflow efficiency is higher, and the pressure difference between the inside and the outside of the train is further balanced
When the train leaves the sound barrier, the piston of the control cylinder 7 is reset under the action of the reset spring 10 in the rodless cavity of the control cylinder 7, so that the vertical barrier and the stress block 9 are reset.
Optionally, the vertical barrier comprises a middle barrier 11 and end barriers 12 at two ends, and the connecting barrier 6 is fixedly connected with the middle barrier 11; the two ends of the middle barrier 11 are rotatably connected with vertically arranged rotating shafts 13, the end barriers 12 are fixed on the rotating shafts 13, and the bottoms of the rotating shafts 13 are fixedly connected with coaxial gears 14; grooves 15 parallel to the sliding rails 3 are formed in the base 4, and teeth 16 meshed with the gears 14 are fixed on the side walls, close to the middle barrier 11, of the grooves 15.
When the vertical barrier slides in the opposite direction, the gear 14 is influenced by the teeth 16 to drive the rotating shaft 13 to rotate, and the rotating shaft 13 drives the end part barrier 12 to swing, so that the calibers of the two end ports of the sound barrier are enlarged, the efficiency of air entering the sound barrier is further improved, and the effect of reducing the pressure change condition in the sound barrier area is achieved; the swing angle of the end barrier 12 is controlled by adjusting the angle at which the shaft 13 rotates by controlling the length of the teeth 16.
During the vertical barrier reset process, the gear 14 and the teeth 16 are meshed again to drive the rotating shaft 13 to rotate reversely, so that the end barrier 12 is driven to swing and reset.
Optionally, the base 2 is provided with a concave cavity 17, the control cylinder 7 and the slide rail 3 are fixed in the corresponding concave cavity 17, the bottom of the middle barrier 11 is not in the concave cavity 17, and the end barriers 12 are higher than the concave cavity 17; be fixed with arc 18 on the lateral wall of cavity 17 keeping away from traffic track 1, sliding connection has arc protective screen 19 with the laminating of arc 18 on the arc 18, and arc protective screen 19 is the same with the radian of arc 18, and arc protective screen 19 top articulates there is connecting seat 20, and the vertical sliding connection of connecting seat 20 is on middle part protective screen 11 lateral wall.
Because the middle barrier 11 and the base 2 are in a slidable connection relationship, noise is easily transmitted through the gap, and the noise reduction effect is poor; and in the noise that the train produced through the sound barrier after the noise reduction treatment is carried out through the sound barrier itself, sound then sees through the gap conduction between cavity and middle part protective screen 11 to the arc 18 in, and the arc 18 forms second closed sound barrier with arc protective screen 19, middle part protective screen 11 between, carries out noise reduction treatment once more, further improves noise reduction effect.
Optionally, a support seat 21 is fixed on both sides of the middle barrier 11, and the other end of the support seat 21 is fixedly connected to the base 4.
By providing the support base 21, the connection stability between the middle barrier 11 and the base 4 is improved.
Optionally, the top end of the force-bearing block 9 is an inclined surface, and the inclined surface is inclined towards the coming direction of the traffic track 1.
The top end of the stress block 9 is an inclined surface which inclines towards the coming direction of the traffic track 1, so that the impact feeling when a train is in contact with the stress block 9 is reduced, and the train is prevented from bumping.
Optionally, a stiffener 22 is fixed between the connecting barrier 6 and the middle barrier 11.
By providing the reinforcing ribs 22, the connection stability between the connection barrier 6 and the middle barrier 11 is improved.
Optionally, the middle barrier 11, the end barriers 12 and the connecting barrier 6 are all made of a transparent acrylic acoustic board and an aluminum acoustic board in a composite mode.
The transparent acrylic acoustic board and the aluminum acoustic board are compounded into the screen, so that the sound absorption and noise reduction capability of the screen is improved.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (6)
1. Closed city sound barrier for rail, including traffic track, its characterized in that: the base fixed on the ground is arranged on each of two sides of the traffic track traffic, a sliding rail is fixedly connected to each base, each sliding rail is perpendicular to the traffic track, a base is connected to each sliding rail in a sliding mode, and a pushing cylinder used for pushing the base to slide is fixed to each base; the base is fixedly connected with vertical barriers, transverse barriers are arranged between the vertical barriers and comprise horizontal barriers, sliding grooves which are horizontally arranged are formed in two sides of each horizontal barrier, connecting barriers are connected in the sliding grooves in a sliding mode, and the connecting barriers are fixedly connected to the top ends of the corresponding vertical barriers respectively; two symmetrical control cylinders are arranged on the traffic track, pipelines are communicated between the rodless cavities of the control cylinders and the rodless cavities of the corresponding telescopic cylinders respectively, a return spring is fixed between the rodless cavity of the control cylinder and the piston, and a stress block is arranged at the top end of the control cylinder; the vertical barrier further comprises a middle barrier and end barriers at two ends, and the connecting barrier is fixedly connected with the middle barrier; the two ends of the middle barrier are rotatably connected with vertically arranged rotating shafts, the end barriers are fixed on the rotating shafts, and the bottoms of the rotating shafts are fixedly connected with coaxial gears; all set up the recess that is on a parallel with the slide rail on the base, all be fixed with the tooth with gear engagement on the lateral wall that the recess is close to the middle part protective screen.
2. The closed urban rail sound barrier according to claim 1, wherein: the base is provided with concave cavities, the control cylinder and the slide rail are fixed in the corresponding concave cavities, the bottom of the middle barrier is not arranged in the concave cavities, and the end barriers are higher than the concave cavities; be fixed with the arc on the cavity keeps away from traffic track's the lateral wall, sliding connection has the arc protective screen with the arc laminating on the arc, and the arc protective screen is the same with the radian of arc, and arc protective screen top articulates there is the connecting seat, and the vertical sliding connection of connecting seat is on middle part protective screen lateral wall.
3. The closed urban rail sound barrier according to claim 2, wherein: and supporting seats are fixed on two sides of the middle barrier, and the other ends of the supporting seats are fixedly connected with the base.
4. The closed urban rail sound barrier according to claim 3, wherein: the top end of the stress block is an inclined plane, and the inclined plane inclines towards the direction of the traffic track.
5. The closed urban rail sound barrier according to claim 4, wherein: and reinforcing ribs are fixed between the connecting barrier and the middle barrier.
6. The closed urban rail sound barrier according to claim 5, wherein: the middle barrier, the end barriers and the connecting barrier are all formed by compounding a transparent acrylic sound-insulating plate and an aluminum sound-absorbing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258409.3A CN113005934B (en) | 2021-03-10 | 2021-03-10 | Closed urban rail sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258409.3A CN113005934B (en) | 2021-03-10 | 2021-03-10 | Closed urban rail sound barrier |
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| Publication Number | Publication Date |
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| CN113005934A CN113005934A (en) | 2021-06-22 |
| CN113005934B true CN113005934B (en) | 2022-04-19 |
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| CN202110258409.3A Active CN113005934B (en) | 2021-03-10 | 2021-03-10 | Closed urban rail sound barrier |
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Families Citing this family (1)
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| CN115492017A (en) * | 2022-09-26 | 2022-12-20 | 中铁二院工程集团有限责任公司 | Method and device for setting urban rail transit evacuation near-rail sound barrier |
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| US5469932A (en) * | 1994-06-09 | 1995-11-28 | Mcnair; Edward P. | Sound barrier with oblique surfaces |
| CN101654995A (en) * | 2008-08-22 | 2010-02-24 | 马兴华 | Porous glass plate and structures adopting porous glass plate |
| CN201546179U (en) * | 2009-09-30 | 2010-08-11 | 华东交通大学 | Sound barrier for intercity rail traffic and city rail traffic viaduct |
| CN101858061B (en) * | 2010-06-28 | 2012-10-24 | 四川正升声学科技有限公司 | Ventilation pressure leakage sound barrier module |
| KR101012468B1 (en) * | 2010-09-30 | 2011-02-08 | 에스에이 주식회사 | Soundproof system by using h-beam engagement structure for adjusting wind pressure |
| CN103422450B (en) * | 2013-07-11 | 2016-02-03 | 西南交通大学 | A kind of high-speed railway compound off-load formula sound barrier |
| CN104612071B (en) * | 2015-02-10 | 2016-06-08 | 华东交通大学 | Adjustable automatic deloading sound barrier |
| CN205589233U (en) * | 2016-05-11 | 2016-09-21 | 武汉科技大学 | Multifunctional train seat |
| CN106522117A (en) * | 2016-12-22 | 2017-03-22 | 中国铁路总公司 | Circular-arc-shaped all-closed sound barrier |
| CN106758902A (en) * | 2016-12-29 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Railway integrated curved form sound barrier |
| CN107740356B (en) * | 2017-09-26 | 2019-08-06 | 同济大学 | Applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous |
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