CN115288519A - Sound insulation and noise reduction device for civil construction - Google Patents
Sound insulation and noise reduction device for civil construction Download PDFInfo
- Publication number
- CN115288519A CN115288519A CN202211123914.8A CN202211123914A CN115288519A CN 115288519 A CN115288519 A CN 115288519A CN 202211123914 A CN202211123914 A CN 202211123914A CN 115288519 A CN115288519 A CN 115288519A
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- 238000009413 insulation Methods 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000009467 reduction Effects 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 229920000742 Cotton Polymers 0.000 claims abstract description 23
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/16—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames
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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
- E01F8/0017—Plate-like elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/20—Posts therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/20—Posts therefor
- E04H17/22—Anchoring means therefor, e.g. specially-shaped parts entering the ground; Struts or the like
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a sound insulation and noise reduction device for civil construction, which is characterized by comprising a plurality of sound insulation and noise reduction mechanisms which are rotatably connected with each other, wherein each sound insulation and noise reduction mechanism comprises a base and a fixed plate which is vertically and fixedly arranged on the base, a first lifting plate is arranged on the fixed plate in a sliding manner along the height direction, one side of the first lifting plate, far away from the fixed plate, is provided with a second lifting plate in the height direction, the second lifting plate comprises a first plate body which is arranged on the first lifting plate in a sliding manner and a second plate body which is vertically connected with one side of the first plate body, far away from the base, a containing groove is arranged in the base, a shaft is rotatably arranged in the containing groove, and soundproof cotton is wound on the shaft and penetrates through the containing groove to be fixedly connected with the second plate body.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a sound insulation and noise reduction device for civil construction.
Background
Civil engineering construction is the construction of civil construction engineering, has covered a plurality of technical activities, carries out the civil engineering work in-process, often can use a lot of construction machinery, has produced a large amount of noises, has caused very big influence to people's production life, and the noise that the civil engineering produced all becomes radial outside propagation moreover, and the influence range is wider, consequently in the work progress, need give sound insulation and fall the management of making an uproar, avoids disturbing residents.
The conventional sound insulation and noise reduction device is usually provided with a surrounding barrier on a construction site, plays a role of simply isolating the construction site, is troublesome to fix, cannot be conveniently assembled and disassembled according to a construction site, is heavy in emergency construction tasks, often reduces the working efficiency, and has certain limitation in practical use; meanwhile, the height of the sound insulation and noise reduction device is fixed, and the sound insulation and noise reduction device cannot be adjusted in real time according to the height of a building, and cannot achieve the sound insulation and noise reduction operation of civil construction buildings with different heights.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the sound-insulating and noise-reducing device for civil construction, which solves the problems that the conventional sound-insulating and noise-reducing device cannot be conveniently assembled and disassembled according to a construction site and has certain limitation in practical use; simultaneously give sound insulation and fall the technical problem that the device of making an uproar highly is fixed, can't adjust according to the height of building in real time, can't realize not accomplishing the operation of making an uproar that gives sound insulation to the civil construction building of co-altitude.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a device of making an uproar falls in sound insulation for civil engineering, it includes:
a plurality of mechanisms of making an uproar that fall that rotate to connect each other give sound insulation, give sound insulation fall the mechanism include base and perpendicular fixed mounting in the fixed plate of base, every along direction of height slidable mounting have first lifter plate on the fixed plate, first lifter plate is kept away from fixed plate one side has the second lifter plate along direction of height slidable mounting, the second lifter plate include slidable mounting in the first plate body of first lifter plate and perpendicular connect in the first plate body is kept away from the second plate body of base one side, the inside groove of accomodating of having seted up of base, it installs around the axle to accomodate the inslot internal rotation, it has soundproof cotton just to wind on the axle soundproof cotton runs through accomodate the groove with second plate body fixed connection.
The sound insulation and noise reduction device for civil construction is further improved in that two ends of the fixing plate in the length direction are respectively provided with a U-shaped seat and a connecting plate matched with bayonets of the U-shaped seats, the connecting plate and the U-shaped seats are respectively provided with mounting holes matched with each other, and bolts used for being matched with first nuts to fixedly connect adjacent sound insulation and noise reduction mechanisms are inserted into the mounting holes.
The sound insulation and noise reduction device for civil construction is further improved in that the U-shaped seat is rotatably connected to the fixed plate through an end plate, through holes matched with each other penetrate through the end plate and the U-shaped seat along the height direction, and an inserting shaft used for matching a second nut to connect the end plate and the U-shaped seat in a threaded manner is arranged in each through hole.
The sound insulation and noise reduction device for civil construction is further improved in that a cavity is formed in the base, a first motor is fixedly installed in the cavity, the output end of the first motor is coaxially connected with a first gear, and one end of the shaft in the axial direction is coaxially connected with a second gear meshed with the first gear.
The sound insulation and noise reduction device for civil construction is further improved in that the bottoms of the first lifting plate and the second lifting plate are respectively and fixedly connected with a first sliding block and a second sliding block, sliding grooves for the first sliding block and the second sliding block to slide are respectively and correspondingly formed in the fixed plate and the first lifting plate, and driving mechanisms for driving the first sliding block and the second sliding block to slide along the sliding grooves are arranged in the sliding grooves.
The sound insulation and noise reduction device for civil construction is further improved in that the first sliding block and the second sliding block are respectively provided with a through threaded hole, the driving mechanism comprises a threaded rod which is in threaded connection with the threaded holes, and the threaded rod is coaxially connected to an output shaft of the second motor and is rotatably arranged in the sliding groove around the axis of the threaded rod.
The sound insulation and noise reduction device for civil construction is further improved in that supports are fixedly arranged at two ends of the bottom of the fixed plate, which are far away from one side of the first lifting plate, a guide roller is rotatably arranged between the two supports, and the sound insulation cotton is positioned between the fixed plate and the guide roller.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the fixing nuts are unscrewed, the U-shaped seats are rotated on the end plates, then the fixing nuts are screwed to fix the U-shaped seats, at the moment, the connecting plates of the adjacent fixing plates are inserted into the U-shaped seats and are fixed through the bolts and the limiting nuts, so that the sound-insulating and noise-reducing mechanisms are quickly and conveniently mounted, and the connecting angles among the sound-insulating and noise-reducing mechanisms are conveniently adjusted;
the threaded rod that drives in the spout of difference respectively through the second motor work of difference is rotatory, and then respectively through the first slider with threaded rod threaded connection, second slider and third slider remove in the spout, realize first lifter plate respectively, the lift operation of second lifter plate and third lifter plate, guarantee the fixed plate, first lifter plate, the total cooperation height and the construction building height of second lifter plate and third lifter plate match, and at the in-process of whole height adjustment, pull out soundproof cotton from the epaxial of accomodating the groove when the second lifter plate shifts up, guarantee soundproof cotton's height and the whole height matching of the mechanism of making an uproar of giving sound insulation, make an uproar of making an uproar falls through soundproof cotton.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a first structure of the sound-insulating and noise-reducing mechanism of the present invention.
Fig. 3 is a schematic view of a second structure of the sound-insulating and noise-reducing mechanism of the present invention.
Fig. 4 is a partial cross-sectional view of a base of the present invention.
Fig. 5 is a schematic structural diagram of a first slider, a second slider and a third slider according to the present invention.
The corresponding relation of reference numbers in the drawings:
1-a sound-insulation noise-reduction mechanism; 2-a base; 3, fixing a plate; 4-a first lifter plate; 5-a second lifter plate; (ii) a 51-a first plate body; 52-a second plate body; 6-a third lifter plate; 7-a storage groove; 8-around the shaft; 9-soundproof cotton; 10-a guide roller; 11-a connecting plate; 12-an end plate; 13-U-shaped seat; 14-inserting the shaft; 15-a second nut; 16-a first electric machine; 17-a first gear; 18-a second gear; 19-a chute; 20-a threaded rod; 21-a second motor; 22-a first slider; 23-a second slide; 24-a third slide; 25-support
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention aims to solve the technical problems that the existing sound insulation and noise reduction device cannot be conveniently assembled and disassembled according to a construction site and has certain limitation in practical use; the height of making an uproar device of making an uproar that gives sound insulation simultaneously is fixed, can't adjust according to the height of building in real time, can't realize not accomplishing the operation of making an uproar that gives sound insulation to the civil construction building of co-altitude not, provides one kind and both can be according to the convenient dismantlement in construction place, can be according to the device of making an uproar that gives sound insulation for the civil construction of building height adjustment again.
Referring to fig. 1 and 2, to achieve the above objects, the present invention provides a sound insulation and noise reduction device for civil engineering, comprising a plurality of sound insulation and noise reduction mechanisms 1 rotatably connected with each other, each of the sound insulation and noise reduction mechanisms 1 comprises a base 2 and a fixing plate 3 vertically and fixedly mounted on the base 2, a first lifting plate 4 is slidably mounted on a side wall of the fixing plate 3 along a height direction, a second lifting plate 5 is slidably mounted on a side of the first lifting plate 4 away from the fixing plate 3 along the height direction, it should be noted that the second lifting plate 5 is slidably connected to the first lifting plate 4, in addition, a receiving groove 7 is further formed in the base 2, a shaft 8 is rotatably mounted in the receiving groove 7 through gear transmission, a sound insulation cotton 9 for sound insulation and noise reduction is wound on the shaft 8 and penetrates the receiving groove 7 to be connected with a second plate body 52 of the second lifting plate 5, it should be noted that, here, the second lifting plate 5 is an L-shaped plate, including the first plate 51 which is slidably mounted on the second lifting plate 5 along the height direction through at least one third lifting plate 6 and the second plate 52 which is vertically connected to one side of the first plate 51 far from the base 2, and the soundproof cotton 9 is connected with the second plate 52, preferably, the second lifting plate 5 can be lifted by sliding the second lifting plate 5, and the soundproof cotton 9 can be pulled out from the accommodating groove 7 around the shaft 8, and meanwhile, according to the actual construction height of the building, the number of the corresponding third lifting plates 6 can be increased, so as to increase the total matching height, and ensure that the height of the soundproof cotton 9 matches with the overall height of the soundproof building height mechanism 1, so as to increase the soundproof height, and further match with the construction height of the building.
Referring to fig. 3, in order to limit and guide the soundproof cotton 9, two ends of the bottom of the fixed plate 3, which are far away from the first lifting plate 4, are fixedly provided with supports 25, a guide roller 10 is rotatably mounted between the two supports 25, and the soundproof cotton 9 is located between the fixed plate 3 and the guide roller 10, it should be noted that the supports 25 may be bearings or bushings, and are coaxially coupled to the guide roller 10, and under the action of the supports 25, the guide roller 10 can rotate around its own axis direction, so as to limit and guide the soundproof cotton 9.
Please refer to fig. 2 and fig. 3, two ends of the fixing plate 3 along the length direction are respectively provided with a connecting plate 11 and an end plate 12, the end plate 12 is rotatably installed with a U-shaped seat 13, and the connecting plate 11 has mounting holes matching with each other on the U-shaped seats 13, a bolt for matching the first nut to fixedly connect the connecting plate 11 and the U-shaped seat 13 of the two adjacent noise reduction mechanisms 1 is inserted in the mounting hole, the end plate 12 and the U-shaped seat 13 have through holes along the height direction, and an insertion shaft 14 for matching the second nut 15 to threadedly connect the end plate 12 and the U-shaped seat 13 is installed in the through hole.
Referring to fig. 4, after the second lifting plate 5 descends, in order to wind and store the soundproof cotton 9 into the storage groove 7, a cavity is formed in the base 2, a first motor 16 is fixedly installed in the cavity, an output shaft of the first motor 16 is coaxially connected with a first gear 17, and a second gear 18 meshed with the first gear 17 is coaxially connected to one end of the shaft 8 along the axial direction, it should be noted that after the second lifting plate 5 descends, the first gear 17 is driven by the first motor 16 to rotate, so as to drive the second gear 19 to rotate, and the rotation of the shaft 8 is realized through the meshing transmission of the two gears, so that the soundproof cotton 9 can be wound and stored into the storage groove 7.
Referring to fig. 5, the bottoms of the first lifting plate 4, the second lifting plate 5 and the third lifting plate 6 are respectively and fixedly connected with a first slider 22, a second slider 23 and a third slider 24, the fixed plate 3, the second lifting plate 5 and the first lifting plate 4 are respectively and correspondingly provided with a sliding groove 19 for the first slider 22, the second slider 23 and the third slider 24 to slide, and a driving mechanism for respectively driving the first slider 22, the second slider 23 and the third slider 24 to slide along the sliding groove 19 is arranged in the sliding groove 19. It should be noted that, all seted up the screw hole that link up on first slider 22, second slider 23 and the third slider 24, actuating mechanism includes threaded rod 20 of difference threaded connection in three screw hole, and threaded rod 20 coaxial coupling is in the output of second motor 21 and around self axis rotation install accomodate the groove 7 in, preferably, runs through on the second plate body 52 of second lifter plate 5 and has seted up the installing port, and second motor 21 is located the installing port.
The concrete operation steps of using the sound insulation and noise reduction device for civil construction are as follows:
1) Mounting the sound-insulation and noise-reduction mechanisms 1, loosening the second nuts 15, rotating the U-shaped seats 13 on the end plates 12, then tightening the second nuts 15 to fix the U-shaped seats 13, inserting the connecting plates 11 of the adjacent fixing plates 3 into the U-shaped seats 13, and fixing the U-shaped seats through bolts and first nuts;
2) The threaded rods 20 in different sliding grooves 19 are driven to rotate respectively through the work of different second motors 21, then the first sliding blocks 22, the second sliding blocks 23 and the third sliding blocks 24 which are in threaded connection with the threaded rods 20 move in the sliding grooves 19 respectively, the lifting operation of the first lifting plate 4, the second lifting plate 5 and the third lifting plate 6 is realized respectively, and the total matching height of the fixed plate 3, the first lifting plate 4, the second lifting plate 5 and the third lifting plate 6 is adjusted to be matched with the civil engineering height;
3) In the lift in-process of second lifter plate 5, pull out soundproof cotton 9 from receiving the spool 8 of groove 7, guarantee that soundproof cotton 9's height and the whole altitude matching of making an uproar mechanism 1 that falls gives sound insulation, after second lifter plate 5 descends, first motor 16 drives first gear 17 rotatory this moment, realizes the rotation around spool 8 through the meshing transmission of second gear 18, convolutes soundproof cotton 9 and accomodates to receiving in the groove 7.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and these embodiments are still within the scope of the invention.
Claims (7)
1. The utility model provides a device of making an uproar falls in giving sound insulation for civil engineering construction, its characterized in that, including a plurality of mutual rotation connection give sound insulation and fall the mechanism of making an uproar, every give sound insulation fall the mechanism include base and vertical fixed mounting in the fixed plate of base, along direction of height slidable mounting have first lifter plate on the fixed plate, first lifter plate is kept away from fixed plate one side has the second lifter plate along direction of height slidable mounting, the second lifter plate including slidable mounting in the first plate body and the perpendicular connection in of first lifter plate body keep away from the second plate body of base one side, the base has inside seted up and has accomodate the groove, accomodate the inslot internal rotation and install the axle, it has soundproof cotton just to twine around the axle soundproof cotton accomodate the groove with second plate body fixed connection.
2. The sound insulation and noise reduction device for civil engineering according to claim 1, wherein the fixing plate is provided with a U-shaped seat and a connecting plate matching with the bayonet of the U-shaped seat at both ends in the length direction, the connecting plate and the U-shaped seat are provided with mounting holes matching with each other, and a bolt for matching with a first nut to fixedly connect the adjacent sound insulation and noise reduction mechanisms is inserted into the mounting hole.
3. The sound insulation and noise reduction device for civil construction according to claim 2, wherein the U-shaped seat is rotatably connected to the fixed plate through an end plate, through holes matched with each other are formed in the end plate and the U-shaped seat in a penetrating manner along the height direction, and an insertion shaft for matching a second nut to connect the end plate and the U-shaped seat in a threaded manner is installed in the through holes.
4. The sound insulation and noise reduction device for civil construction according to claim 1, wherein a cavity is formed in the base, a first motor is fixedly installed in the cavity, a first gear is coaxially connected to an output end of the first motor, and a second gear meshed with the first gear is coaxially connected to one axial end of the shaft.
5. The sound insulation and noise reduction device for civil engineering construction according to claim 1, wherein the bottom of the first lifting plate and the bottom of the second lifting plate are fixedly connected with a first sliding block and a second sliding block respectively, sliding grooves for the sliding of the first sliding block and the second sliding block are correspondingly formed in the fixed plate and the first lifting plate respectively, and a driving mechanism for driving the sliding of the first sliding block and the second sliding block along the sliding grooves is arranged in the sliding grooves.
6. The sound insulation and noise reduction device for civil engineering according to claim 5, wherein the first slider and the second slider are each provided with a through threaded hole, and the driving mechanism includes a threaded rod that is threadedly connected to the threaded hole, and the threaded rod is coaxially coupled to the output shaft of the second motor and rotatably mounted in the chute about its axis.
7. The sound insulation and noise reduction device for civil engineering according to claim 1, wherein the bottom of the fixed plate is fixedly provided with supports at two ends of one side far away from the first lifting plate, a guide roller is rotatably arranged between the two supports, and the soundproof cotton is positioned between the fixed plate and the guide roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211123914.8A CN115288519A (en) | 2022-09-15 | 2022-09-15 | Sound insulation and noise reduction device for civil construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211123914.8A CN115288519A (en) | 2022-09-15 | 2022-09-15 | Sound insulation and noise reduction device for civil construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115288519A true CN115288519A (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211123914.8A Pending CN115288519A (en) | 2022-09-15 | 2022-09-15 | Sound insulation and noise reduction device for civil construction |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120097849A (en) * | 2011-02-25 | 2012-09-05 | 주식회사 동성엔지니어링 | Height adjustable membrane using soundproof wall |
| CN213573365U (en) * | 2020-10-21 | 2021-06-29 | 刘利 | A warning guardrail for building engineering construction |
| CN215717785U (en) * | 2021-05-17 | 2022-02-01 | 中国建筑第七工程局有限公司 | Recyclable construction protection fence |
| CN215907587U (en) * | 2021-07-02 | 2022-02-25 | 云南振鸿金属丝网制品有限公司 | Guardrail net convenient to equipment |
| CN216277277U (en) * | 2021-10-28 | 2022-04-12 | 俞彬 | Green construction noise reduction isolation device in aspect of building construction technology |
| CN216974415U (en) * | 2021-12-21 | 2022-07-15 | 海南山金矿业有限公司 | Safety protection device for electric construction of power plant |
| CN217300128U (en) * | 2021-12-17 | 2022-08-26 | 浦湘生物能源股份有限公司 | Building construction safety device |
-
2022
- 2022-09-15 CN CN202211123914.8A patent/CN115288519A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120097849A (en) * | 2011-02-25 | 2012-09-05 | 주식회사 동성엔지니어링 | Height adjustable membrane using soundproof wall |
| CN213573365U (en) * | 2020-10-21 | 2021-06-29 | 刘利 | A warning guardrail for building engineering construction |
| CN215717785U (en) * | 2021-05-17 | 2022-02-01 | 中国建筑第七工程局有限公司 | Recyclable construction protection fence |
| CN215907587U (en) * | 2021-07-02 | 2022-02-25 | 云南振鸿金属丝网制品有限公司 | Guardrail net convenient to equipment |
| CN216277277U (en) * | 2021-10-28 | 2022-04-12 | 俞彬 | Green construction noise reduction isolation device in aspect of building construction technology |
| CN217300128U (en) * | 2021-12-17 | 2022-08-26 | 浦湘生物能源股份有限公司 | Building construction safety device |
| CN216974415U (en) * | 2021-12-21 | 2022-07-15 | 海南山金矿业有限公司 | Safety protection device for electric construction of power plant |
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