CN108360765B - Anti-falling system penetrating out of roof hole and processing method thereof - Google Patents
Anti-falling system penetrating out of roof hole and processing method thereof Download PDFInfo
- Publication number
- CN108360765B CN108360765B CN201711468215.6A CN201711468215A CN108360765B CN 108360765 B CN108360765 B CN 108360765B CN 201711468215 A CN201711468215 A CN 201711468215A CN 108360765 B CN108360765 B CN 108360765B
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- Prior art keywords
- metal round
- round tube
- roof
- falling
- outer metal
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 18
- 238000003672 processing method Methods 0.000 title description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 102
- 239000002184 metal Substances 0.000 claims abstract description 102
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 26
- 239000000565 sealant Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 7
- 229920000742 Cotton Polymers 0.000 abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 abstract description 5
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- -1 aluminum-magnesium-manganese Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
- E04D13/1407—Junctions of roof sheathings to chimneys or other parts extending above the roof for flat roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
- E04D13/1687—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure the insulating material having provisions for roof drainage
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Prevention Of Electric Corrosion (AREA)
- Building Environments (AREA)
Abstract
The invention belongs to the technical field of constructional engineering, and relates to a roof hole penetrating through a falling prevention system and a treatment method thereof. The outer metal round pipe is sleeved on the anti-falling inner metal round pipe, is arranged concentrically and in different diameters and is welded and connected with the roof board in a sealing manner, so that the welding range is small, the welding engineering quantity is reduced, and the labor input is reduced; the aluminum material is the same as the outer metal round tube and the aluminum welding, so that electrochemical corrosion among different metals is avoided; the sealing cover plate is in sealing connection with the outer metal round tube through the sealant, so that the integrity is high, and the waterproof performance is good; structural layers such as mode coiled materials, non-woven fabrics, heat preservation cotton and the like are not arranged in the roof board, so that the fire risk is reduced, and the safety performance is higher.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and relates to a roof hole penetrating through a falling prevention system and a treatment method thereof.
Background
With the popularization of metal roofs, most of various large public buildings adopt metal roofs, and the system is a falling protection system arranged for overhauling, maintaining and cleaning people on the roofs. The structure of the falling prevention system penetrating out of a roof hole in the prior art comprises a roof board 1', round steel pipes 2', a flashing board 5', a cover board 3', a hoop 6', a lower lining aluminum board 8' and fastening screws 9', wherein the roof board 1' adopts a composite structure layer roof board with heat insulation cotton, waterproof coiled materials 11' and a non-woven fabric multi-layer structure, the roof board 1' is provided with a hole penetrating out of the roof, the round steel pipes 2' are arranged above the hole, the outer surface of the upper end of the round steel pipes 2' is provided with the hoop 6' and the flashing board 5', the hoop 6' is fastened through stainless steel bolts 7', the joint of the hoop 6' and the outer surface of the round steel pipes 2' is sealed and filled through sealant 4', the flashing board 5' is welded on the outer surface of the round steel pipes 2', the top end of the round steel pipes 2' is provided with the cover board 3', and the cover board 3' is provided with an iron ring 31'; the lower end of the roof board 1 'is provided with a lower lining aluminum plate 8', the upper end face of the lower lining aluminum plate 8 'and the lower end face of the roof board 1' are provided with Z-shaped connecting plates 12 'and are respectively and fixedly connected with the roof board 1' and the lower lining aluminum plate 8 'through fastening screws 9'; however, the structural arrangement of the anti-falling system penetrating out of the roof hole has the following technical defects: 1. the flashing plates 5' are connected with the roof board 1', and are formed by splicing four flashing plates 5', so that the welding range is large, the integrity is low, and hidden danger of water leakage exists; 2. because the roof board 1' is a fluorocarbon spraying aluminum-magnesium-manganese alloy plate, the coating on the roof board 1' is easy to damage when the anti-falling system is welded, and the anti-corrosion capability of the roof board 1' is damaged; 3. because the structural layers of the metal roof board 1 'are provided with heat-insulating cotton, waterproof coiled materials 11', non-woven fabrics and the like, fire hidden danger exists in the welding process. Therefore, there is an urgent need for a safer fall protection system and roof hole penetrating structure.
Disclosure of Invention
The purpose of the invention is that: the invention provides a roof hole penetrating through an anti-falling system and a processing method thereof.
The technical scheme is as follows: in order to achieve the aim, the invention discloses a falling prevention system which penetrates out of a roof hole, and comprises a roof plate, a falling prevention inner metal round tube, an outer metal round tube, a sealing cover plate, sealing glue and a lower lining aluminum plate;
the roof board is provided with holes penetrating out of the roof;
the anti-falling inner metal round tube and the anti-falling outer metal round tube are arranged in a concentric reducing sleeve joint mode, the periphery of the lower end of the outer metal round tube is welded with the upper end face of the roof board through aluminum welding, the outer metal round tube is an aluminum alloy round tube, and the lower end of the anti-falling inner metal round tube extends into the hole and is fixedly connected with the lower lining aluminum plate;
the sealing cover plate is arranged at the upper ports of the anti-falling inner metal round tube and the anti-falling outer metal round tube, and the lower end face of the sealing cover plate is in sealing connection with the outer surface of the upper end of the outer metal round tube through sealing glue.
Preferably, the anti-falling inner metal round tube is a fluorocarbon-sprayed round steel tube and has the specification of phi 60 multiplied by 3mm.
Preferably, the specification of the outer metal round tube is phi 67 multiplied by 1.0mm.
Preferably, the sealing cover plate is a 6mm thick steel plate and radially protrudes out of the upper port of the outer metal round tube, and the outer surface of the sealing cover plate is uniformly sprayed with a fluorocarbon spray coating.
Preferably, an iron ring used for a steel wire rope to pass through is arranged at the right middle position of the upper end surface of the sealing cover plate, and a fluorocarbon spray coating is uniformly sprayed on the outer surface of the iron ring.
Preferably, galvanized angle steel is arranged between the roof board and the lower lining aluminum plate, one edge of the galvanized angle steel is fixedly connected with the lower end face of the roof board, the other edge of the galvanized angle steel is fixedly connected with the periphery of the lower end of the anti-falling inner metal round pipe, and the specification of the galvanized angle steel is L30 multiplied by 3mm.
Preferably, the upper end face of the roof board is provided with a plurality of parallel hot dip galvanized square steel pipes which are arranged at equal intervals, the anti-falling inner metal round pipe and the anti-falling outer metal round pipe are arranged at the middle position of the hot dip galvanized square steel pipes, and the specification of the hot dip galvanized square steel pipes is 120 multiplied by 80 multiplied by 5.0mm.
Preferably, the distance between the lower end surface of the sealing cover plate and the upper end surface of the roof board is 200mm.
Preferably, the aluminum welding is through-length welding around the outer metal round tube.
The method for processing the falling prevention system penetrating out of the roof hole comprises the following steps:
1) A plurality of holes penetrating out of the roof are formed in the roof board;
2) Sleeving an outer metal round pipe in the anti-falling inner metal round pipe, extending the lower end of the anti-falling inner metal round pipe into the hole and fixedly connecting the lower end of the anti-falling inner metal round pipe with a lower lining aluminum plate at the lower end of the roof board, and welding the lower end of the outer metal round pipe and the edge of the hole at the upper end of the roof board around the outer metal round pipe through aluminum welding;
3) The upper ports of the outer metal round tube and the anti-falling inner metal round tube are provided with sealing cover plates, and the lower end surfaces of the sealing cover plates and the outer surfaces of the upper ends of the outer metal round tubes are sealed and filled with sealing glue;
4) And the galvanized angle steel is arranged on the outer surface of the part of the anti-falling inner metal round tube extending into the hole to fixedly connect the roof board with the anti-falling inner metal round tube.
The technical scheme can be seen that the invention has the following beneficial effects: the anti-falling system passes through the roof hole, and is sleeved on the anti-falling inner metal round pipe by adopting the outer metal round pipe, is arranged concentrically and in different diameters and is welded and sealed with the roof board, so that the welding range is small, the welding engineering amount is reduced, and the labor input is reduced; the aluminum material is the same as the outer metal round tube and the aluminum welding, so that electrochemical corrosion among different metals is avoided; the sealing cover plate is in sealing connection with the outer metal round tube through the sealant, so that the integrity is high, and the waterproof performance is good; structural layers such as mode coiled materials, non-woven fabrics, heat preservation cotton and the like are not arranged in the roof board, so that the fire risk is reduced, and the safety performance is higher.
Drawings
FIG. 1 is a schematic diagram of a prior art fall arrest system;
FIG. 2 is a schematic top view of a prior art fall protection system extending out of a roof aperture;
FIG. 3 is a schematic view of the fall arrest system of the present invention;
FIG. 4 is a schematic top view of the fall protection system of the present invention penetrating out of a roof aperture;
in the figure: 1' -roof boarding, 2' -round steel pipe, 3' -cover plate, 31' -iron ring, 4' -sealant, 5' -flashing board, 6' -anchor ear, 7' -stainless steel bolt, 8' -lower lining aluminum plate, 9' -fastening screw, 10' -hot dip galvanized square steel pipe, 11' -waterproof coiled material, 12' -Z-shaped connecting plate, 1-roof boarding, 11-hole, 2-inner metal round pipe, 3-outer metal round pipe, 4-sealing cover plate, 5-iron ring, 6-sealant, 7-lower lining aluminum plate, 8-aluminum welding, 9-galvanized angle steel and 10-hot dip galvanized square steel pipe.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
Example 1
The anti-falling system passes through a roof hole, as shown in figures 3-4, and comprises a roof board 1, an anti-falling inner metal round tube 2, an outer metal round tube 3, a sealing cover board 4, sealing glue 6 and a lower lining aluminum plate 7;
the roof board 1 is provided with holes 11 penetrating out of a roof;
the anti-falling inner metal round tube 2 and the outer metal round tube 3 are arranged in a concentric reducing sleeve joint manner, the periphery of the lower end of the outer metal round tube 3 is welded with the upper end face of the roof board 1 through aluminum welding 8, the outer metal round tube 3 is an aluminum alloy round tube, and the lower end of the anti-falling inner metal round tube 2 extends into the hole 11 and is fixedly connected with the lower lining aluminum plate 7;
the sealing cover plate 4 is arranged at the upper ports of the anti-falling inner metal round tube 2 and the anti-falling outer metal round tube 3, and the lower end face of the sealing cover plate 4 is in sealing connection with the outer surface of the upper end of the outer metal round tube 3 through the sealant 6.
As shown in fig. 3-4, the anti-falling inner metal round tube 2 is a fluorocarbon-sprayed round steel tube and has the specification of phi 60 multiplied by 3mm.
As shown in FIG. 3, the specification of the outer metal round tube 3 is phi 67 multiplied by 1.0mm.
As shown in fig. 3, the sealing cover plate 4 is a 6mm thick steel plate and radially protrudes out of the upper port of the outer metal round tube 3, and a fluorocarbon spray coating is uniformly sprayed on the outer surface of the sealing cover plate 4.
As shown in fig. 3, an iron ring 5 for a steel wire rope (not shown) to pass through is arranged at the middle position of the upper end face of the sealing cover plate 4, and a fluorocarbon spray coating is uniformly sprayed on the outer surface of the iron ring 5.
As shown in fig. 3, galvanized angle steel 9 is arranged between the roof board 1 and the lower lining aluminum plate 7, one side of the galvanized angle steel 9 is fixedly connected with the lower end face of the roof board 1, the other side is fixedly connected with the periphery of the lower end of the anti-falling inner metal round tube 2, and the specification of the galvanized angle steel 9 is L30 multiplied by 3mm.
As shown in fig. 4, the upper end surface of the roof board 1 is provided with a plurality of hot dip galvanized square steel pipes 10 which are parallel and equidistantly arranged at intervals, the anti-falling inner metal round pipe 2 and the anti-falling outer metal round pipe 3 are arranged at the middle position of the hot dip galvanized square steel pipes 10, and the specification of the hot dip galvanized square steel pipes 10 is 120×80×5.0mm.
As shown in fig. 3, the distance between the lower end surface of the sealing cover plate 4 and the upper end surface of the roof board 1 is 200mm.
As shown in fig. 3, the aluminum welding 8 is a full length welding around the outer metal round tube 3.
The method for processing the falling prevention system penetrating out of the roof hole comprises the following steps:
1) A plurality of holes 11 penetrating out of the roof are formed in the roof board 1;
2) The outer metal round tube 3 is sleeved in the anti-falling inner metal round tube 2, the lower end of the anti-falling inner metal round tube 2 extends into the hole 11 and is fixedly connected with the lower lining aluminum plate 7 at the lower end of the roof board 1, and the lower end of the outer metal round tube 3 and the edge of the hole 11 at the upper end of the roof board 1 are welded around the outer metal round tube 3 through aluminum welding 8;
3) The upper ports of the outer metal round tube 3 and the anti-falling inner metal round tube 2 are provided with a sealing cover plate 4, and the lower end surface of the sealing cover plate 4 and the outer surface of the upper end of the outer metal round tube 3 are sealed and filled with sealing glue 6;
4) The galvanized angle steel 9 is arranged on the outer surface of the part of the anti-falling inner metal round tube 2 extending into the hole 11 to fixedly connect the roof board 1 with the anti-falling inner metal round tube 2.
Compared with the structure that the anti-falling system in the prior art penetrates out of the roof hole (as shown in figures 1-2), the structure that the anti-falling system in the invention penetrates out of the roof hole is simpler, the welding range is smaller, the welding engineering amount is reduced, and the labor input is reduced; and the metal tube 3 and the aluminum welding 8 are made of the same material, so that electrochemical corrosion between metals is avoided; the sealing cover plate 4 is in sealing connection with the outer metal round tube 3 through the sealant 6, so that the integrity is high, and the waterproof performance is good; the roof board 1 is not provided with structural layers such as coiled materials, non-woven fabrics, heat preservation cotton and the like, so that the fire risk is reduced, and the safety performance is higher.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a prevent falling system wears out roofing hole which characterized in that: the anti-falling metal roof comprises a roof board, an anti-falling inner metal round pipe, an outer metal round pipe, a sealing cover plate, sealant and a lower lining aluminum plate;
the roof board is provided with holes penetrating out of the roof;
the anti-falling inner metal round tube and the anti-falling outer metal round tube are arranged in a concentric reducing sleeve joint mode, the periphery of the lower end of the outer metal round tube is welded with the upper end face of the roof board through aluminum welding, the outer metal round tube is an aluminum alloy round tube, and the lower end of the anti-falling inner metal round tube extends into the hole and is fixedly connected with the lower lining aluminum plate;
the sealing cover plate is arranged at the upper ports of the anti-falling inner metal round tube and the anti-falling outer metal round tube, and the lower end face of the sealing cover plate is in sealing connection with the outer surface of the upper end of the outer metal round tube through sealing glue;
the upper end face of the roof board is provided with a plurality of parallel hot dip galvanized square steel pipes which are arranged at equal intervals,
the aluminum welding is through-length welding around the outer metal round tube.
2. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: the anti-falling inner metal round tube is a fluorocarbon-sprayed round steel tube and has the specification of phi 60 multiplied by 3mm.
3. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: the specification of the outer metal round tube is phi 67 multiplied by 1.0mm.
4. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: the sealing cover plate is a 6mm thick steel plate and radially protrudes out of the upper port of the outer metal round tube, and a fluorocarbon spray coating is uniformly sprayed on the outer surface of the sealing cover plate.
5. A fall arrest system according to claim 4, wherein: an iron ring used for a steel wire rope to pass through is arranged in the middle of the upper end face of the sealing cover plate, and a fluorocarbon spray coating is uniformly sprayed on the outer surface of the iron ring.
6. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: galvanized angle steel is arranged between the roof board and the lower lining aluminum plate, one edge of the galvanized angle steel is fixedly connected with the lower end face of the roof board, the other edge of the galvanized angle steel is fixedly connected with the periphery of the lower end of the anti-falling inner metal round pipe, and the specification of the galvanized angle steel is L30 multiplied by 3mm.
7. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: the anti-falling inner metal round tube and the anti-falling outer metal round tube are arranged at the middle position of the hot dip galvanized square steel tube, and the specification of the hot dip galvanized square steel tube is 120 multiplied by 80 multiplied by 5.0mm.
8. A fall arrest system according to claim 1, extending out of a roof aperture, wherein: the distance between the lower end face of the sealing cover plate and the upper end face of the roof board is 200mm.
9. A method of treating a roof opening through which a fall protection system according to any one of claims 1 to 8 passes, comprising: the method comprises the following steps:
1) A plurality of holes penetrating out of the roof are formed in the roof board;
2) Sleeving an outer metal round pipe in the anti-falling inner metal round pipe, extending the lower end of the anti-falling inner metal round pipe into the hole and fixedly connecting the lower end of the anti-falling inner metal round pipe with a lower lining aluminum plate at the lower end of the roof board, and welding the lower end of the outer metal round pipe and the edge of the hole at the upper end of the roof board around the outer metal round pipe through aluminum welding;
3) The upper ports of the outer metal round tube and the anti-falling inner metal round tube are provided with sealing cover plates, and the lower end surfaces of the sealing cover plates and the outer surfaces of the upper ends of the outer metal round tubes are sealed and filled with sealing glue;
4) And the galvanized angle steel is arranged on the outer surface of the part of the anti-falling inner metal round tube extending into the hole to fixedly connect the roof board with the anti-falling inner metal round tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468215.6A CN108360765B (en) | 2017-12-29 | 2017-12-29 | Anti-falling system penetrating out of roof hole and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468215.6A CN108360765B (en) | 2017-12-29 | 2017-12-29 | Anti-falling system penetrating out of roof hole and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360765A CN108360765A (en) | 2018-08-03 |
| CN108360765B true CN108360765B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468215.6A Active CN108360765B (en) | 2017-12-29 | 2017-12-29 | Anti-falling system penetrating out of roof hole and processing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN108360765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112095935B (en) * | 2020-09-01 | 2021-09-21 | 中国建筑第八工程局有限公司 | Construction method of waterproof structure of steel structure factory building outlet roof |
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|---|---|---|---|---|
| CN1180124A (en) * | 1996-08-30 | 1998-04-29 | 佳能株式会社 | Combination solar battery and roof unit and mounting method thereof |
| CN1237671A (en) * | 1998-05-20 | 1999-12-08 | 佳能株式会社 | Photovoltaic power generating structure |
| DE10204987A1 (en) * | 2001-06-22 | 2003-01-16 | Wilhelm Thorsten Braun | Leaf protection for down pipe of rain gutter has a wire mesh basket hung inside the top end of the down pipe |
| CN101294426A (en) * | 2008-06-06 | 2008-10-29 | 中建(长沙)不二幕墙装饰有限公司 | High-efficiency energy-saving solar photovoltaic glass curtain wall |
| CN106013633A (en) * | 2016-06-23 | 2016-10-12 | 山东雅百特科技有限公司 | Safety guarantee system for standing type dual-engaged accessible roof and mounting process of safety guarantee system |
| CN207700559U (en) * | 2017-12-29 | 2018-08-07 | 山东雅百特科技有限公司 | A kind of drop preventer is pierced by roofing hole |
-
2017
- 2017-12-29 CN CN201711468215.6A patent/CN108360765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180124A (en) * | 1996-08-30 | 1998-04-29 | 佳能株式会社 | Combination solar battery and roof unit and mounting method thereof |
| CN1237671A (en) * | 1998-05-20 | 1999-12-08 | 佳能株式会社 | Photovoltaic power generating structure |
| DE10204987A1 (en) * | 2001-06-22 | 2003-01-16 | Wilhelm Thorsten Braun | Leaf protection for down pipe of rain gutter has a wire mesh basket hung inside the top end of the down pipe |
| CN101294426A (en) * | 2008-06-06 | 2008-10-29 | 中建(长沙)不二幕墙装饰有限公司 | High-efficiency energy-saving solar photovoltaic glass curtain wall |
| CN106013633A (en) * | 2016-06-23 | 2016-10-12 | 山东雅百特科技有限公司 | Safety guarantee system for standing type dual-engaged accessible roof and mounting process of safety guarantee system |
| CN207700559U (en) * | 2017-12-29 | 2018-08-07 | 山东雅百特科技有限公司 | A kind of drop preventer is pierced by roofing hole |
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| Publication number | Publication date |
|---|---|
| CN108360765A (en) | 2018-08-03 |
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