CN110748196A - Block terminal protection canopy for building site safety protection - Google Patents

Block terminal protection canopy for building site safety protection Download PDF

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Publication number
CN110748196A
CN110748196A CN201910891464.9A CN201910891464A CN110748196A CN 110748196 A CN110748196 A CN 110748196A CN 201910891464 A CN201910891464 A CN 201910891464A CN 110748196 A CN110748196 A CN 110748196A
Authority
CN
China
Prior art keywords
positioning frame
fixed
protection
sunshade net
distribution box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910891464.9A
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Chinese (zh)
Inventor
柳辉
陈子潇
高平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Construction Engineering Group Co Ltd
Original Assignee
China Railway Construction Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Construction Engineering Group Co Ltd filed Critical China Railway Construction Engineering Group Co Ltd
Priority to CN201910891464.9A priority Critical patent/CN110748196A/en
Publication of CN110748196A publication Critical patent/CN110748196A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/12Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
    • E04H1/1205Small buildings erected in the open air
    • E04H1/1238Shelters for engines, e.g. electrical meter housings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/343Structures characterised by movable, separable, or collapsible parts, e.g. for transport
    • E04B1/34315Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00Roofs; Roof construction with regard to insulation
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Lowering Means (AREA)

Abstract

The invention belongs to the technical field of building protection equipment, and particularly relates to a distribution box protection shed for building site safety protection, which comprises a base station paved on a road surface, wherein the top of the base station is fixedly connected with a positioning frame in a threaded manner, the inner side of the positioning frame is detachably connected with a protective guard, the protective guard is hinged with a protective door capable of being opened and closed, a sunshade net is arranged on the periphery of the outer side wall of the positioning frame, four corners of the sunshade net are respectively provided with a lantern ring, and the sunshade net is fixedly connected with the positioning frame through the lantern ring; through with whole protection canopy setting by two locating frames of top and bottom, rail guard and a ceiling that a plurality of steel pipes enclose constitute, all fix through the spiro union between the spare part, when needs shift, still can dismantle the spare part of installation in proper order, can not damage any part, but reuse rate is high, saves the cost, and all fixes through the spiro union, and the installation is with dismantle all more convenient.

Description

Block terminal protection canopy for building site safety protection
Technical Field
The invention belongs to the technical field of building protection equipment, and particularly relates to a distribution box protection shed for building site safety protection.
Background
In the building work progress, can use interim block terminal usually, the block terminal generally sets up near the building, because in the work progress, distribution equipment is touched by the constructor mistake easily, has certain potential safety hazard, generally all can set up simple and easy protection canopy in the block terminal outside on the building site at present.
Because the block terminal that uses on the building site is interim distribution equipment, need dismantle the transfer, the protection canopy of block terminal just needs to be dismantled equally simultaneously, and current block terminal protection canopy mostly adopts the welding mode to fix, and is just more troublesome to the dismantlement of protection canopy, is unfavorable for the reuse of protection canopy moreover, will build again protection canopy to next building site, causes the waste of steel resource, increase cost.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a distribution box protection shed for building site safety protection, which has the characteristics of convenience in disassembly and assembly and capability of disassembling and recycling all parts.
In order to achieve the purpose, the invention provides the following technical scheme: a distribution box protection shed for building site safety protection comprises a base station paved on a road surface, wherein a positioning frame is fixed on the top of the base station in a screwed mode, a protective guard is detachably connected to the inner side of the positioning frame, a protective door capable of being opened and closed is hinged to the protective guard, a sunshade net is installed on the outer side wall of the positioning frame in the circumferential direction, lantern rings are installed at four corners of the sunshade net, the sunshade net is fixedly connected with the positioning frame through the lantern rings, a ceiling is installed at the top of the positioning frame, a plurality of hinge pages are arranged at the joint of the positioning frame and the ceiling, the positioning frame is fixedly connected with the ceiling through the hinge pages, the protective guard comprises a plurality of steel pipes and a plurality of fixing sleeves installed at the top end and the bottom end of each steel pipe, each fixing sleeve is in a shape like a Chinese character 'ji', and welding seats are, the fixing sleeve is fixed on the inner side wall of the positioning frame through the welding seat in a welding mode, a steel pipe mounting hole is formed between the fixing sleeve and the positioning frame, two ends of each steel pipe are respectively inserted into the two steel pipe mounting holes, a fastening bolt is further installed on the fixing sleeve in a threaded mode, the steel pipes are fixed with the fixing sleeve through the fastening bolt in a threaded mode, and the fixing sleeves are evenly distributed on the inner side of the positioning frame.
Preferably, a rubber pad is further arranged on the inner side wall of the fixed sleeve, the rubber pad is fixedly connected with the fixed sleeve, and the rubber pad is arranged between the steel pipe and the positioning frame.
Preferably, the lantern ring is a circular ring with a fracture, a screw is fixed to the fracture of the lantern ring in a threaded mode, and the sunshade net and the lantern ring are fixed through the screw in a threaded mode.
Preferably, the locating frame includes first locating frame and second locating frame, the bottom welded fastening of first locating frame has a plurality of spiro union seat, spiro union seat evenly distributed is in the outer wall of first locating frame, first locating frame with pass through between the base station spiro union seat and expansion bolts fixed connection.
Preferably, the hinges are uniformly distributed on the peripheral outer wall of the second positioning frame, and the second positioning frame is fixedly connected with the ceiling through the hinges.
Preferably, the ceiling comprises a water slope top plate, a bearing plate and connecting columns, the number of the connecting columns is four, the connecting columns are fixed at four corners of the bearing plate respectively, and the water slope top plate is fixedly installed at the tops of the connecting columns.
Preferably, the sunshade net is a black mesh non-woven fabric.
Preferably, a plurality of the steel pipes are equidistantly distributed, and the distance between every two adjacent steel pipes is twenty centimeters.
Preferably, the slope of the water slope top plate is ten degrees.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the whole protection shed is provided with the protective guard and the ceiling which are formed by the two positioning frames at the top and the bottom, the plurality of steel pipes and the protective guard, the parts are fixed through the screw threads, when the parts need to be transferred, the installed parts can still be sequentially disassembled, any part cannot be damaged, the repeated utilization rate is high, the cost is saved, the parts are all fixed through the screw threads, and the installation and the disassembly are convenient.
In the invention, in addition, the outer part of the guard railing is also provided with the sunshade net made of black mesh non-woven fabric, the sunshade net can shield rain, snow and sunlight on the side surface without obstructing ventilation, the condition that the switch board is wetted by the rain and snow on the side surface to cause the interior of the switch board to be damp can be avoided, and the protection range is larger compared with the existing protection shed only provided with a ceiling.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is an enlarged view of the structure at A in the present invention;
FIG. 4 is a schematic view of the sunshade net of the present invention.
In the figure: 1. a base station; 2. a positioning frame; 201. a screw joint seat; 21. a first positioning frame; 22. a second positioning frame; 3. protecting the fence; 301. a protective door; 31. a steel pipe; 32. fixing the sleeve; 321. a steel pipe mounting hole; 322. a rubber pad; 323. welding a base; 324. fastening a bolt; 4. a sunshade net; 41. a collar; 411. a screw; 5. a ceiling; 51. a down-water slope roof; 52. a carrier plate; 53. connecting columns; 6. and (6) hinge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: a distribution box protection shed for safety protection of a construction site comprises a base platform 1 laid on a road surface, a positioning frame 2 is fixedly screwed at the top of the base platform 1, a protective guard 3 is detachably connected to the inner side of the positioning frame 2, a protective door 301 capable of opening and closing is hinged to the protective guard 3, a sunshade net 4 is installed on the periphery of the outer side wall of the positioning frame 2, lantern rings 41 are installed at four corners of the sunshade net 4, the sunshade net 4 is fixedly connected with the positioning frame 2 through the lantern rings 41, a ceiling 5 is installed at the top of the positioning frame 2, a plurality of hinge leaves 6 are arranged at the joint of the positioning frame 2 and the ceiling 5, the positioning frame 2 is fixedly connected with the ceiling 5 through the hinge leaves 6, the protective guard 3 comprises a plurality of steel pipes 31 and a plurality of fixing sleeves 32 installed at the top ends and the bottom ends of the steel pipes 31, the fixing sleeves 32 are in a shape like a Chinese character 'ji', both ends of the fixing sleeves 32 are, form steel pipe mounting hole 321 between fixed sleeve 32 and the locating frame 2, peg graft respectively in two steel pipe mounting holes 321 at the both ends of steel pipe 31, still the spiro union is installed fastening bolt 324 on the fixed sleeve 32, passes through fastening bolt 324 spiro union fixed between steel pipe 31 and the fixed sleeve 32, and a plurality of fixed sleeve 32 evenly distributed are at the inboard of locating frame 2.
In the embodiment, the whole protection shed is provided with a protective guard 3 and a ceiling 5, wherein the protective guard 3 is formed by two positioning frames 2 at the top and the bottom, a plurality of steel pipes 31 and a ceiling 5 are enclosed, the parts are fixed and detachable through screw threads, a base station 1 of concrete is paved on the ground in advance, a first positioning frame 21 is fixed through a screw seat 201 welded on the peripheral side of the first positioning frame 21 by installing expansion bolts, then the steel pipes 31 are sequentially inserted into a fixing sleeve 32 welded on the inner side wall of the first positioning frame 21, the steel pipes 31 are primarily fixed, then a second positioning frame 22 is installed at the top of the steel pipes 31, fastening bolts 324 on the fixing sleeve 32 are sequentially screwed and fixed, so that the plurality of steel pipes 31 form the protective guard 3 to protect the distribution box inside, finally the ceiling 5 is hung at the top of the second positioning frame 22, then a hinge 6 is installed between the ceiling 5 and the second positioning frame 22, the spiro union is fixed, accomplish the installation of whole protection canopy, when needs shift, still can dismantle the spare part of installation in proper order, can not damage any part, but reuse rate is high, save the cost, and all fix through the spiro union, the installation is all more convenient with the dismantlement, the sunshade net 4 of black mesh non-woven fabrics has still been installed to the outside of rail guard 3 in addition, sunshade net 4 can shelter from the sleet and the sunshine that blow that the side comes, and do not hinder the ventilation, the sleet that can avoid the side to blow comes is drenched the switch board, cause the inside condition of weing of switch board, for current protection canopy that only has ceiling 5, the protection scope is bigger.
Specifically, still be equipped with rubber pad 322 on the inside wall of fixed sleeve 32, rubber pad 322 and fixed sleeve 32 fixed connection, rubber pad 322 are between steel pipe 31 and posting 2, through set up rubber pad 322 on the inside wall of fixed sleeve 32, can strengthen the frictional force between steel pipe 31 and the fixed sleeve 32, make the installation of steel pipe 31 more stable, and can form the protection to steel pipe 31 and posting 2.
Specifically, the ring shape of lantern ring 41 for having the fracture, the fracture department spiro union of lantern ring 41 is fixed with screw 411, it is fixed through the screw 411 spiro union between sunshade net 4 and the lantern ring 41, can fix sunshade net 4 in the outside of rail guard 3, sunshade net 4 is black mesh non-woven fabrics, sunshade net 4 can shelter from the sleet and the sunshine that blow of side, and do not hinder the ventilation, the sleet that can avoid the side to blow comes is drenched the switch board, cause the inside condition of weing of switch board, for the current protection canopy that only has ceiling 5, the protection scope is bigger.
Specifically, the locating frame 2 includes first locating frame 21 and second locating frame 22, and the bottom welded fastening of first locating frame 21 has a plurality of spiro union seat 201, and spiro union seat 201 evenly distributed is at the outer wall of first locating frame 21, through spiro union seat 201 and expansion bolts fixed connection between first locating frame 21 and the base station 1, can carry on spacingly and fixedly to arranging of steel pipe 31 installation.
Specifically, hinge 6 evenly distributed is at the outer wall all around of second locating frame 22, and second locating frame 22 passes through hinge 6 fixed connection with ceiling 5, installs ceiling 5, makes things convenient for the dismantlement of later stage ceiling 5.
Specifically, ceiling 5 is including following water slope roof 51, loading board 52 and spliced pole 53, and spliced pole 53 quantity is four, and fixes four corners at loading board 52 respectively, follows water slope roof 51 fixed mounting at spliced pole 53's top, has two-layer protection, and can insulate against heat, reduces the temperature of switch board, and the slope of following water slope roof 51 is ten degrees, can get off the rainwater water conservancy diversion, prevents ponding.
Specifically, the steel pipes 31 are equidistantly distributed, and the distance between two adjacent steel pipes 31 is twenty centimeters, so that the strength of the guard rail 3 can be enhanced.
The working principle and the using process of the invention are as follows: the base station 1 of concrete is laid on the ground in advance, the first positioning frame 21 is installed with expansion bolts through the screwed seats 201 welded on the peripheral side of the first positioning frame 21, the steel pipes 31 are sequentially inserted into the fixing sleeves 32 welded on the inner side walls of the first positioning frame 21, the steel pipes 31 are preliminarily fixed, then the second positioning frame 22 is installed on the top of the steel pipes 31, the fastening bolts 324 on the fixing sleeves 32 are sequentially screwed for fixing, a plurality of steel pipes 31 form a protective guard 3, the internal distribution box can be protected, finally the ceiling 5 is hung on the top of the second positioning frame 22, the hinge 6 is installed between the ceiling 5 and the second positioning frame 22, and the whole protective shed is installed through screwing and fixing.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a block terminal protection canopy for building site safety protection, includes lays base station (1) on the road surface, its characterized in that: the top of the base station (1) is fixed with a positioning frame (2) in a threaded manner, the inner side of the positioning frame (2) is detachably connected with a protective guard (3), the protective guard (3) is hinged with a protective door (301) which can be opened and closed, a sunshade net (4) is installed on the outer side wall of the positioning frame (2), lantern rings (41) are installed at four corners of the sunshade net (4), the sunshade net (4) is fixedly connected with the positioning frame (2) through the lantern rings (41), a ceiling (5) is installed at the top of the positioning frame (2), a plurality of hinge pages (6) are arranged at the joint of the positioning frame (2) and the ceiling (5), the positioning frame (2) is fixedly connected with the ceiling (5) through the hinge pages (6), the protective guard (3) comprises a plurality of steel pipes (31) and a plurality of fixing sleeves (32) which are installed at the top end and the bottom end of the steel pipes (31), the fixing sleeve (32) is in a shape like a Chinese character 'ji', welding seats (323) are arranged at two ends of the fixing sleeve (32), the fixing sleeve (32) is fixed on the inner side wall of the positioning frame (2) through the welding seats (323) in a welding mode, steel pipe mounting holes (321) are formed between the fixing sleeve (32) and the positioning frame (2), two ends of a steel pipe (31) are respectively inserted into the two steel pipe mounting holes (321), fastening bolts (324) are further installed on the fixing sleeve (32) in a threaded mode, the steel pipe (31) and the fixing sleeve (32) are fixed through the fastening bolts (324) in a threaded mode, and the fixing sleeve (32) is evenly distributed on the inner side of the positioning frame (2).
2. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: the inner side wall of the fixed sleeve (32) is further provided with a rubber pad (322), the rubber pad (322) is fixedly connected with the fixed sleeve (32), and the rubber pad (322) is arranged between the steel pipe (31) and the positioning frame (2).
3. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: the lantern ring (41) is in a ring shape with a fracture, a screw (411) is fixed at the fracture of the lantern ring (41) in a threaded mode, and the sunshade net (4) and the lantern ring (41) are fixed through the screw (411) in a threaded mode.
4. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: the utility model discloses a positioning frame, including positioning frame (2), fixed position frame (21) and second positioning frame (22), the bottom welded fastening of first positioning frame (21) has a plurality of spiro union seat (201), spiro union seat (201) evenly distributed is in the outer wall of first positioning frame (21), first positioning frame (21) with pass through between base station (1) spiro union seat (201) and expansion bolts fixed connection.
5. The distribution box protection shed for the safety protection of the construction site according to claim 4, characterized in that: the hinge leaves (6) are uniformly distributed on the peripheral outer wall of the second positioning frame (22), and the second positioning frame (22) is fixedly connected with the ceiling (5) through the hinge leaves (6).
6. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: ceiling (5) are including following water slope roof (51), loading board (52) and spliced pole (53), spliced pole (53) quantity is four, and fixes respectively four corners of loading board (52), follow water slope roof (51) fixed mounting in the top of spliced pole (53).
7. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: the sunshade net (4) is a black mesh non-woven fabric.
8. The distribution box protection shed for the safety protection of the construction site according to claim 1, characterized in that: a plurality of steel pipe (31) equidistance distributes, and adjacent two the distance is twenty centimetres between steel pipe (31).
9. The distribution box protection shed for the safety protection of the construction site according to claim 6, characterized in that: the gradient of the downcast slope top plate (51) is ten degrees.
CN201910891464.9A 2019-09-20 2019-09-20 Block terminal protection canopy for building site safety protection Pending CN110748196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910891464.9A CN110748196A (en) 2019-09-20 2019-09-20 Block terminal protection canopy for building site safety protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910891464.9A CN110748196A (en) 2019-09-20 2019-09-20 Block terminal protection canopy for building site safety protection

Publications (1)

Publication Number Publication Date
CN110748196A true CN110748196A (en) 2020-02-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114575631A (en) * 2022-02-25 2022-06-03 江苏丰阳建设工程有限公司 Block terminal protection canopy for building site safety protection

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060180059A1 (en) * 2003-05-09 2006-08-17 Martin William D Modular cage for equipment and method of assembling the same
CN202266189U (en) * 2011-08-30 2012-06-06 吕海波 Line pole iron slipper
CN103982518A (en) * 2014-06-06 2014-08-13 常州德日机械有限公司 Multifunctional u-shaped bolt
CN204060064U (en) * 2014-08-11 2014-12-31 中国建筑第七工程局有限公司 A kind of novel assembled switchbox protection canopy
CN105888309A (en) * 2016-06-13 2016-08-24 湖北科保安防护设备有限公司 Distribution box protective shed for construction site
CN206487178U (en) * 2017-01-04 2017-09-12 繁昌县易能科技有限责任公司 Distribution box protection canopy is used in one kind construction
CN108708578A (en) * 2018-06-26 2018-10-26 徐晓胜 A kind of flexible portable distribution box protection canopy and installation and application
CN108952229A (en) * 2018-08-31 2018-12-07 林健夫 A kind of rain and snow distribution box protection canopy of high-building construction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060180059A1 (en) * 2003-05-09 2006-08-17 Martin William D Modular cage for equipment and method of assembling the same
CN202266189U (en) * 2011-08-30 2012-06-06 吕海波 Line pole iron slipper
CN103982518A (en) * 2014-06-06 2014-08-13 常州德日机械有限公司 Multifunctional u-shaped bolt
CN204060064U (en) * 2014-08-11 2014-12-31 中国建筑第七工程局有限公司 A kind of novel assembled switchbox protection canopy
CN105888309A (en) * 2016-06-13 2016-08-24 湖北科保安防护设备有限公司 Distribution box protective shed for construction site
CN206487178U (en) * 2017-01-04 2017-09-12 繁昌县易能科技有限责任公司 Distribution box protection canopy is used in one kind construction
CN108708578A (en) * 2018-06-26 2018-10-26 徐晓胜 A kind of flexible portable distribution box protection canopy and installation and application
CN108952229A (en) * 2018-08-31 2018-12-07 林健夫 A kind of rain and snow distribution box protection canopy of high-building construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114575631A (en) * 2022-02-25 2022-06-03 江苏丰阳建设工程有限公司 Block terminal protection canopy for building site safety protection

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Application publication date: 20200204

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