CN115467261A - Arch totally enclosed sound insulation protective screen - Google Patents

Arch totally enclosed sound insulation protective screen Download PDF

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Publication number
CN115467261A
CN115467261A CN202211157578.9A CN202211157578A CN115467261A CN 115467261 A CN115467261 A CN 115467261A CN 202211157578 A CN202211157578 A CN 202211157578A CN 115467261 A CN115467261 A CN 115467261A
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CN
China
Prior art keywords
sound insulation
sound
channel
air outlet
air
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Granted
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CN202211157578.9A
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CN115467261B (en
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甘成
洪少华
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Chengdu Weiteng Environmental Protection Technology Co ltd
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Chengdu Weiteng Environmental Protection Technology Co ltd
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Publication of CN115467261A publication Critical patent/CN115467261A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

The equipment comprises a plurality of support frames which are arranged on a road at intervals, wherein a sound insulation board is fixedly arranged between every two adjacent support frames; the support frame is including setting up in the stand of road both sides and the fixed arch bar that sets up on two stands, and the air intake has been seted up to the opposite flank of two stands, and the air outlet has been seted up to the opposite flank of two stands, has seted up the syllable-dividing wind channel that is used for intercommunication air intake and air outlet in the stand, and the wind channel that gives sound insulation is including the inlet air channel who communicates in proper order, circle round the passageway and the air-out passageway, and the passageway that circles round is the cavity of cylinder type, and the center rotation of the passageway that circles round is provided with the sound absorbing column. The convolute passage of the application reduces wind power to a certain extent, reduces the effect of wind load on the sound insulation board, and prolongs the service life of the sound insulation board; meanwhile, the sound absorption column can filter passing noise to a certain extent, so that the transmission of the noise is reduced.

Description

Arch totally enclosed sound insulation protective screen
Technical Field
The application relates to sound insulation barrier technical field, especially relates to an arch totally enclosed sound insulation barrier.
Background
With the development of economy in China, the number of automobiles in China is continuously increased, and the construction of urban roads, expressways, intercity light rails and high-speed railways also enters a high-speed development period. However, while providing convenience of transportation, the generated traffic noise has adverse effects on the health and lives of surrounding residents. Acoustic barriers are generally used, i.e. they are inserted between the source and the recipient, providing a significant additional attenuation of the acoustic wave propagation, thus reducing the noise contribution in a certain area where the recipient is located. The existing sound insulation barrier is arched and totally enclosed, so that a sound insulation effect can be better achieved.
With respect to the related art among the above, there are the following drawbacks: when a vehicle runs on a road, the sound insulation barrier can obstruct air movement to a certain extent, and damage to the sound insulation barrier due to overlarge wind force in the sound insulation barrier is easily caused.
Disclosure of Invention
For the life of effectual extension acoustic celotex board, this application provides an arch totally enclosed sound insulating barrier.
The application provides a pair of arch totally enclosed sound insulation barrier adopts following technical scheme:
an arched totally-enclosed sound insulation barrier comprises a plurality of support frames which are arranged on a road at intervals, and a sound insulation board is fixedly arranged between every two adjacent support frames; the support frame is including setting up in the stand of road both sides and the fixed arch bar that sets up on two stands, two the air intake has been seted up to the opposite flank of stand, two the air outlet has been seted up to the opposite flank of stand, set up the syllable-dividing wind channel that is used for communicateing air intake and air outlet in the stand, the wind channel that gives sound insulation is including the inlet air channel that communicates in proper order, the passageway that circles round is the cavity of cylinder type, the center rotation of the passageway that circles round is provided with the sound absorbing column.
Through adopting above-mentioned technical scheme, support frame and acoustic celotex board cooperate, can form confined domes on the road to realize the sound insulation around the road. Wind power generated when the vehicle moves enters the sound insulation air duct from the air inlet, is guided to rotate by the inner wall of the convoluted passage and then is discharged from the air outlet passage, so that the wind power is reduced to a certain extent, the effect of wind load on the sound insulation board is reduced, and the service life of the sound insulation board is prolonged; meanwhile, the sound absorption column can filter passing noise to a certain extent, so that the transmission of the noise is reduced.
Optionally, a partition plate for partitioning the air outlet channel is rotatably disposed on the inner wall of the air outlet channel, and a positioning block for limiting the free end of the partition plate to rotate towards the air inlet is fixedly disposed on the inner wall of the air outlet channel; the rotating shaft of the partition plate is sleeved with a torsional spring, one end of the torsional spring is fixedly arranged on the partition plate, and the other end of the torsional spring is fixedly arranged on the inner wall of the air outlet channel.
By adopting the technical scheme, the partition plate is matched with the positioning block, so that the air outlet channel can be partitioned, and the wind outside the sound-proof barrier can be prevented from entering the sound-proof barrier; simultaneously, according to the wind-force size in the sound-proof protective screen, can let the turned angle of cut-off plate different to adjust the passageway size that the air-out passageway supplied wind-force to pass through, make better filtering in the wind channel that gives sound insulation along with the noise of wind-force propagation.
Optionally, a plurality of sound absorbing strips parallel to the rotating shaft of the partition plate are fixedly arranged on the side surface of the partition plate facing the positioning plate.
Through adopting above-mentioned technical scheme, wind-force is when the division board, inhales the sound strip and can further filter the noise to reduce the propagation of noise.
Optionally, an air collecting plate is fixedly arranged on one side of the upright post, which is positioned at the air inlet, and the air collecting plate is obliquely arranged towards the driving direction of the vehicle; and a rain shield is fixedly arranged above the air outlet on the upright post.
By adopting the technical scheme, the wind collecting plate can guide the air flow in the sound insulation barrier, so that the air flow in the sound insulation barrier can better enter the sound insulation channel; the rain baffle can reduce rainwater and enter into the sound insulation channel, so that the sound insulation channel can play a better sound insulation and silencing effect.
Optionally, the air inlet channel and the air outlet channel have the same structure, the cross section of the cavity of the air inlet channel is gradually reduced, and the left wall and the right wall of the air inlet channel are tangent to the inner wall of the convolute channel.
Through adopting above-mentioned technical scheme, the structural setting of inlet air channel and air-out passageway can be so that wind-force gets into the passageway that circles round from inlet air channel to discharge from the air-out passageway after rotatory through the inner wall guide of the passageway that circles round, thereby let the better quilt sound absorption post of noise filter, the propagation of noise abatement.
Optionally, the inner walls of the air inlet channel and the air outlet channel are coated with sound insulation layers.
Through adopting above-mentioned technical scheme, wind-force is when through inlet air channel and air-out passageway, and the body that the noise reduction process stand is spread out.
Optionally, adjacent two the tip male inserting groove that is used for the acoustic celotex board is all offered to the opposite flank of support frame, the acoustic celotex board is dull and stereotyped and is located the arc abatvoix between two arch bars including being located inhaling between two stands, the both ends of arc abatvoix are fixed to be provided with and are used for cup jointing in inhaling the outer syllable-dividing lagging of sound dull and stereotyped.
Through adopting above-mentioned technical scheme, the lagging that gives sound insulation can cover and inhale the junction of sound flat board and arc abatvoix, and the noise reduction spreads away from inhaling the clearance between sound flat board and the arc abatvoix to make the sound-proof protective screen play better syllable-dividing effect.
Optionally, the holding tank has been seted up towards inhaling dull and stereotyped one side of sound on the lagging for giving sound, the holding tank internal fixation is provided with the sealing strip.
Through adopting above-mentioned technical scheme, the sealing strip can increase the sealed effect between the lagging and the sound absorption flat board, and the holding tank can reduce the condition that the sealing strip drops from the lagging that gives sound insulation to increase the syllable-dividing effect of sound-proofing protective screen.
Optionally, a threaded hole communicated with the insertion groove is formed in the side surface of the upright column, and a bolt abutting against the surface of the sound absorption flat plate is connected to the threaded hole in an inner thread mode.
Through adopting above-mentioned technical scheme, the screw hole cooperatees with the bolt, can fix the tip of acoustic celotex board in the inserting groove, reduces the condition that the acoustic celotex board drops from the support frame.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the cooperation of support frame and acoustic celotex board, can form confined domes on the road to realize the sound insulation around the road. Wind power caused by vehicle movement enters the sound insulation air duct from the air inlet, and is guided to rotate through the inner wall of the rotary passage and then is discharged from the air outlet passage, so that the wind power is reduced to a certain extent, the effect of wind load on the sound insulation plate is reduced, and the service life of the sound insulation plate is prolonged; meanwhile, the sound absorption column can filter the passing noise to a certain extent, so that the transmission of the noise is reduced;
2. the partition plate is matched with the positioning block and can partition the air outlet channel, so that wind outside the sound-insulating barrier is prevented from entering the sound-insulating barrier; simultaneously, according to the wind-force size in the sound-proof protective screen, can let the turned angle of cut-off plate different to adjust the passageway size that the air-out passageway supplied wind-force to pass through, make better filtering in the wind channel that gives sound insulation along with the noise of wind-force propagation.
Drawings
FIG. 1 is a schematic view of an arched totally enclosed sound barrier according to an embodiment of the present application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a partial cross-sectional view of a post and acoustic duct in an embodiment of the present application;
FIG. 5 is an enlarged view of portion C of FIG. 4;
description of reference numerals: 1. a support frame; 2. a column; 3. an arch bar; 4. a sound insulating board; 41. a sound absorbing panel; 42. an arc-shaped sound-absorbing board; 5. an air inlet; 6. an air outlet; 7. a sound insulation air duct; 71. an air inlet channel; 72. a convolute channel; 73. an air outlet channel; 8. a sound absorbing column; 9. dividing the plate; 10. positioning a block; 11. a torsion spring; 12. a sound absorbing strip; 13. a wind-collecting plate; 14. a rain shield; 15. a sound insulating layer; 16. inserting grooves; 17. a sound insulation sheathing board; 18. accommodating a tank; 19. a sealing strip; 20. a threaded hole; 21. a bolt; 22. a base; 23. mounting holes; 24. and a cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-5 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The embodiment of the application discloses arch totally enclosed sound insulating barrier.
Referring to fig. 1 and 2, the sound insulation barrier includes a plurality of support frames 1 arranged on a road at intervals, and a sound insulation board 4 is fixedly arranged between two adjacent support frames 1; the support frame 1 comprises upright posts 2 arranged on two sides of a road and arch bars 3 fixedly arranged on the two upright posts 2. In this embodiment, the upright column 2 is a hollow rectangular steel column, the bottom end of the upright column 2 is fixedly welded with the base 22, and the top end of the upright column 2 is fixedly welded with the cover plate 24; the upright 2, the base 22 and the cover plate 24 cooperate to form a hollow chamber in the upright 2. Four mounting holes 23 are formed in the base 22, and the upright 2 can be fixed on two sides of a road through the mounting holes 23.
Referring to fig. 1 and 3, for better installation acoustic celotex board 4, the opposite side of two adjacent support frames 1 all offers the inserted inserting groove 16 of tip that is used for acoustic celotex board 4, and acoustic celotex board 4 is including being located the dull and stereotyped 41 of inhaling between two stands 2 and being located the arc abatvoix 42 between two arch bars 3, and the both ends of arc abatvoix 42 are fixed to be provided with and are used for cup jointing the sound insulation lagging 17 outside inhaling dull and stereotyped 41. In the present embodiment, the sound absorbing flat plate 41, the arc-shaped sound absorbing plate 42, and the sound insulating sheathing plate 17 are transparent acrylic plates, wherein the sound insulating sheathing plate 17 is integrally formed at the end of the arc-shaped sound absorbing plate 42. The sound-insulating sleeve 17 can cover the joint between the sound-absorbing flat plate 41 and the arc-shaped sound-absorbing plate 42, and reduce the noise from being spread out from the gap between the sound-absorbing flat plate 41 and the arc-shaped sound-absorbing plate 42, so that the sound-insulating barrier can achieve better sound-insulating effect.
Referring to fig. 1 and 3, in order to increase the sound insulation effect of the sound insulation barrier, a receiving groove 18 is formed on one side of the sound insulation sleeve plate 17 facing the sound absorption flat plate 41, and a sealing strip 19 is fixedly arranged in the receiving groove 18. In this embodiment, the sealing strip 19 is fixed in the accommodating groove 18 by strong glue, the sealing effect between the sound-insulating sleeve 17 and the sound-absorbing flat plate 41 can be increased by the sealing strip 19, and the accommodating groove 18 can reduce the situation that the sealing strip 19 falls off from the sound-insulating sleeve 17.
Referring to fig. 1 and 2, in order to reduce the possibility that the baffle 4 is detached from the support frame 1, a screw hole 20 communicating with the insertion groove 16 is opened in the side surface of the pillar 2, and a bolt 21 abutting against the surface of the sound absorbing flat plate 41 is screwed into the screw hole 20. In this embodiment, the screw hole 20 is located inside the sound barrier, and the end of the baffle 4 can be fixed in the insertion groove 16 by the screw hole 20 being engaged with the bolt 21.
Referring to fig. 4 and 5, in order to exhaust wind in the sound insulation barrier, air inlets 5 are formed in opposite side surfaces of the two columns 2, air outlets 6 are formed in opposite side surfaces of the two columns 2, and sound insulation air ducts 7 for communicating the air inlets 5 and the air outlets 6 are formed in the columns 2. In this embodiment, the air inlet 5 is located the bottom of the upright post 2, the air outlet 6 is located the top of the upright post 2, and the air inlet 5 and the air outlet 6 are both communicated with the sound insulation air duct 7 by adopting six circular holes. Wind power in the sound insulation barrier enters the sound insulation air duct 7 from the air inlet 5 and is discharged from the air outlet channel 73, so that the wind power is reduced to a certain degree, the effect of wind load on the sound insulation plate 4 is reduced, and the service life of the sound insulation plate 4 is prolonged.
Referring to fig. 4 and 5, in order to make the airflow better enter the sound insulation channel, a wind collecting plate 13 is fixedly arranged on one side of the upright post 2, which is positioned at the air inlet 5, and the wind collecting plate 13 is obliquely arranged towards the driving direction of the vehicle; a rain shield 14 is fixedly arranged above the air outlet 6 on the upright post 2. In this embodiment, the wind collecting plate 13 and the rain shielding plate 14 are fixed outside the pillar 2 by welding, and the wind collecting plate 13 can guide the air flow in the sound-proof barrier, so that the air flow in the sound-proof barrier can better enter the sound-proof channel; rainwater can be reduced to enter the sound insulation channel through the rain shielding plate 14, so that the sound insulation channel can achieve better sound insulation and silencing effects.
Referring to fig. 4 and 5, in order to filter noise of the air flow entering the sound insulation channel, the sound insulation air duct 7 includes an air inlet channel 71, a convolute channel 72, and an air outlet channel 73, which are sequentially communicated, the convolute channel 72 is a cylindrical cavity, and a sound absorbing column 8 is rotatably disposed in the center of the convolute channel 72. In this embodiment, the sound insulation duct 7 may be one, or a plurality of ducts that are sequentially communicated; the wind power is guided to rotate by the inner wall of the convolute channel 72 and then is discharged from the wind outlet channel 73, so that the wind power can be reduced to a certain extent.
Referring to fig. 4 and 5, in order to further reduce the propagation of noise, the air inlet channel 71 and the air outlet channel 73 have the same structure, the cavity cross section of the air inlet channel 71 is gradually reduced, and the left and right walls of the air inlet channel 71 are tangent to the inner wall of the swirl channel 72; the inner walls of the air inlet channel 71 and the air outlet channel 73 are coated with sound insulation layers 15. In this embodiment, through the structural arrangement of the air inlet channel 71 and the air outlet channel 73, wind power can enter the convolute channel 72 from the air inlet channel 71, and is guided to rotate by the inner wall of the convolute channel 72 and then is discharged from the air outlet channel 73, so that noise is better filtered by the sound absorbing column 8, and the transmission of noise is reduced. Simultaneously, the noise insulation layer 15 reduces the noise in the noise insulation air duct 7 from propagating out through the body of the upright post 2.
Referring to fig. 4 and 5, in order to filter noise better in the sound insulation air duct 7, a partition plate 9 for partitioning the air outlet channel 73 is rotatably disposed on the inner wall of the air outlet channel 73, and a positioning block 10 for limiting the free end of the partition plate 9 to rotate toward the air inlet 5 is fixedly disposed on the inner wall of the air outlet channel 73; cup jointed torsional spring 11 in the pivot of partition plate 9, the one end of torsional spring 11 is fixed to be set up on partition plate 9, and the other end is fixed to be set up in the inner wall of air-out passageway 73. In this embodiment, the positioning block 10 is fixed on the inner wall of the air outlet channel 73 by welding, and the air outlet channel 73 can be partitioned by matching the partition plate 9 with the positioning block 10, so that the wind outside the sound insulation barrier is prevented from entering the sound insulation barrier; meanwhile, according to the wind power in the sound insulation barrier, the rotation angles of the partition plates 9 can be different, so that the size of a channel for the wind power to pass through of the air outlet channel 73 is adjusted, and the noise transmitted along with the wind power is better filtered in the sound insulation air duct 7.
Referring to fig. 4 and 5, in order to reduce the noise transmission in the air outlet channel 73, a plurality of sound absorbing strips 12 parallel to the rotation axis of the partition plate 9 are fixedly arranged on the side surface of the partition plate 9 facing the positioning plate. In the embodiment, the sound absorption strips 12 are fixed on the surface of the partition plate 9 in a collection and bonding manner, and when wind passes through the partition plate, the sound absorption strips 12 can further filter noise, so that the transmission of the noise is reduced.
The implementation principle of an arch totally enclosed sound insulation barrier of the embodiment of the application is as follows: wind power generated when the vehicle moves enters the sound insulation air duct 7 from the air inlet 5, is guided by the inner wall of the convoluted passage 72 to rotate and then is discharged from the air outlet passage 73, so that the wind power is reduced to a certain extent, the effect of wind load on the sound insulation plate 4 is reduced, and the service life of the sound insulation plate 4 is prolonged; meanwhile, the sound absorption column 8 can filter the passing noise to a certain extent, so that the transmission of the noise is reduced.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Claims (9)

1. An arched totally-enclosed sound insulation barrier is characterized by comprising a plurality of support frames (1) which are arranged on a road at intervals, wherein a sound insulation plate (4) is fixedly arranged between every two adjacent support frames (1); support frame (1) is including setting up in stand (2) of road both sides and fixed arch-shaped pole (3) of setting on two stands (2), two air intake (5) have been seted up to the opposite side of stand (2), two air outlet (6) have been seted up to the opposite side of stand (2), set up syllable-dividing wind channel (7) that are used for communicateing air intake (5) and air outlet (6) in stand (2), syllable-dividing wind channel (7) are including air inlet channel (71), the passageway (72) and the air-out passageway (73) of circling round that communicate in proper order, the passageway (72) of circling round is the cavity of cylinder type, the center of the passageway (72) of circling round rotates and is provided with sound absorbing column (8).
2. The arched totally-enclosed sound insulation barrier as claimed in claim 1, wherein the inner wall of the air outlet channel (73) is rotatably provided with a partition plate (9) for partitioning the air outlet channel (73), and the inner wall of the air outlet channel (73) is fixedly provided with a positioning block (10) for limiting the free end of the partition plate (9) to rotate towards the direction of the air inlet (5); a torsion spring (11) is sleeved on a rotating shaft of the dividing plate (9), one end of the torsion spring (11) is fixedly arranged on the dividing plate (9), and the other end of the torsion spring is fixedly arranged on the inner wall of the air outlet channel (73).
3. An arched totally enclosed sound barrier according to claim 2, characterized in that said dividing plate (9) is fixedly provided with a plurality of sound absorbing strips (12) parallel to the axis of rotation of the dividing plate (9) on the side facing the positioning plate.
4. The arched totally enclosed sound insulation barrier according to claim 1, characterized in that a wind collecting plate (13) is fixedly arranged on one side of the upright post (2) which is positioned at the air inlet (5), and the wind collecting plate (13) is obliquely arranged towards the driving direction of the vehicle; and a rain baffle (14) is fixedly arranged above the air outlet (6) on the upright post (2).
5. The arch-shaped totally enclosed sound insulation barrier as claimed in claim 1, wherein the air inlet channel (71) and the air outlet channel (73) have the same structure, the cross section of the cavity of the air inlet channel (71) is gradually reduced, and the left and right walls of the air inlet channel (71) are tangent to the inner wall of the convoluted channel (72).
6. An arched totally enclosed sound insulating barrier according to claim 5, characterized in that the inner walls of the air inlet channel (71) and the air outlet channel (73) are coated with a sound insulating layer (15).
7. The arch-shaped totally-enclosed sound insulation barrier as claimed in claim 1, wherein the opposite side surfaces of two adjacent support frames (1) are respectively provided with a plug-in slot (16) for inserting the end of the sound insulation board (4), the sound insulation board (4) comprises a sound absorption flat plate (41) positioned between two upright posts (2) and an arc-shaped sound absorption plate (42) positioned between two arch-shaped rods (3), and two ends of the arc-shaped sound absorption plate (42) are fixedly provided with sound insulation sleeve plates (17) sleeved outside the sound absorption flat plate (41).
8. An arched totally enclosed sound insulating barrier according to claim 7, characterized in that said sound insulating panels (17) are provided with a receiving groove (18) on the side facing the sound absorbing panel (41), said receiving groove (18) being internally fitted with a sealing strip (19).
9. The arch-shaped totally enclosed sound insulation barrier as claimed in claim 7, wherein the side of the upright post (2) is provided with a threaded hole (20) communicated with the insertion groove (16), and the threaded hole (20) is internally threaded with a bolt (21) abutting against the surface of the sound absorption flat plate (41).
CN202211157578.9A 2022-09-22 2022-09-22 Arch totally enclosed sound insulation barrier Active CN115467261B (en)

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Application Number Priority Date Filing Date Title
CN202211157578.9A CN115467261B (en) 2022-09-22 2022-09-22 Arch totally enclosed sound insulation barrier

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CN202211157578.9A CN115467261B (en) 2022-09-22 2022-09-22 Arch totally enclosed sound insulation barrier

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CN115467261A true CN115467261A (en) 2022-12-13
CN115467261B CN115467261B (en) 2024-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116949963A (en) * 2023-09-18 2023-10-27 山西军昊实业有限公司 Cylindrical integrated totally-enclosed sound barrier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208545684U (en) * 2018-06-05 2019-02-26 中铁十五局集团电气化工程有限公司 A kind of sound barrier
CN110512538A (en) * 2019-08-28 2019-11-29 深圳市双禹王声屏障工程技术有限公司 A kind of arch totally enclosed type noise barrier
CN212247935U (en) * 2020-05-13 2020-12-29 陈墨涵 Composite sound barrier for expressway
CN217325099U (en) * 2022-04-24 2022-08-30 山东高速交通科技有限公司 Noise control trackside sound barrier device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208545684U (en) * 2018-06-05 2019-02-26 中铁十五局集团电气化工程有限公司 A kind of sound barrier
CN110512538A (en) * 2019-08-28 2019-11-29 深圳市双禹王声屏障工程技术有限公司 A kind of arch totally enclosed type noise barrier
CN212247935U (en) * 2020-05-13 2020-12-29 陈墨涵 Composite sound barrier for expressway
CN217325099U (en) * 2022-04-24 2022-08-30 山东高速交通科技有限公司 Noise control trackside sound barrier device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116949963A (en) * 2023-09-18 2023-10-27 山西军昊实业有限公司 Cylindrical integrated totally-enclosed sound barrier
CN116949963B (en) * 2023-09-18 2024-01-02 山西军昊实业有限公司 Cylindrical integrated totally-enclosed sound barrier

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