CN210032698U - Adjustable angle for building site faces limit safety protection railing - Google Patents
Adjustable angle for building site faces limit safety protection railing Download PDFInfo
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- CN210032698U CN210032698U CN201822266376.3U CN201822266376U CN210032698U CN 210032698 U CN210032698 U CN 210032698U CN 201822266376 U CN201822266376 U CN 201822266376U CN 210032698 U CN210032698 U CN 210032698U
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- skirting board
- safety protection
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- 238000010276 construction Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
An angle-adjustable limb safety protection guardrail for a construction site comprises a bottom fixing device of a separation structure, a vertical rod, a cross rod, a skirting board and a plurality of skirting board lower buckles for mutually connecting the vertical rod, the cross rod and the skirting board, wherein the skirting board upper buckles and the cross rod end clamping groove connecting pieces are arranged on the skirting board; in an assembly use state, the bottom fixing device is flatly and firmly fixed with a structural part through an expansion bolt, the bottom of the vertical rod is inserted into the bottom fixing device in an interpolation mode, and the bottom fixing device is fastened and fixed through the bolt; the cross rod is connected with the vertical rod through buckling into a clamping groove connecting piece at the end part of the cross rod, the skirting board is fixedly installed on the vertical rod through a lower buckle of the skirting board and an upper buckle of the skirting board, and the fastening bolt penetrates through the nut to fasten and connect the buckles of the skirting board and the vertical rod and adjust the angle. Each part of the safety protection guardrail can be prefabricated in a factory, standardized, normalized and batched production is realized, the quality is safe, firm and reliable, the safety protection guardrail can be circularly used, and is convenient to disassemble and suitable for serving as an edge safety protection guardrail with any gradient.
Description
Technical Field
The utility model relates to a building construction technical field, especially an adjustable angle for building site faces limit safety protection railing.
Background
Along with the continuous development of buildings, the construction and construction of safe civilization are more and more emphasized by construction and construction enterprises, the conventional marginal protective measures randomly erected on construction sites have the disadvantages of low turnover utilization, large material waste, complex construction and installation, non-standard erection, unqualified appearance, poor economic benefit and the like, and the requirements of the safe civilization of the modern building construction can not be met.
In order to solve the problems, the applicant has a patent publication number of: CN102644383A, an assembled floor guard rail, discloses an assembled floor guard rail; the above problems have been solved by on-site assembly of components of separate construction prefabricated in advance in the factory, but they have the following disadvantages: 1. the connecting device is too simple to adjust the angle; 2. no skirting board is installed; 3. the cross bar lengthening device is not provided, and the requirements of a construction site cannot be completely met.
Disclosure of Invention
The utility model aims at providing a structure is succinct, convenient to use, elegant appearance, quality safety is firm reliable, can circulate the turnover and use, and it is convenient to dismantle, and the reduction of erection time is applicable to the limit safety protection railing that faces of arbitrary slope, reaches safety protection reduce cost's purpose to overcome the above-mentioned not enough that prior art exists.
The technical scheme for solving the problems is as follows: the utility model provides an adjustable angle for building site faces limit safety protection railing, includes the bottom fixing device of isolating construction, pole setting, horizontal pole, baseboard and a plurality of connecting device who is used for pole setting, horizontal pole and baseboard interconnect, its characterized in that: the connecting device comprises a skirting board lower buckle, a skirting board upper buckle and a cross rod end clamping groove connecting piece;
the lower fastener of the skirting board consists of a sleeve I and an upward clamping hook, a connecting hole III is formed in the middle of one side of the sleeve I, a connecting nut II is welded at the position corresponding to the connecting hole III, and a fastening bolt II penetrates through the nut II to fasten the upward clamping hook of the skirting board and the vertical rod; the upward clamping hook is formed by bending a short round steel by 90 degrees, one short end of the upward clamping hook is welded in the middle of one side of the sleeve I, and the hook of the upward clamping hook faces upwards;
the fastening bolt III penetrates through the nut III to fasten and connect the skirting board downward clamping hook and the vertical rod, the downward clamping hook is formed by bending a short round steel by 90 degrees, one short end of the downward clamping hook is welded at the middle part of one side of the sleeve II, and the bent hook needs to be welded downwards when the downward clamping hook is welded;
the transverse rod end clamping groove connecting piece is made of a U-shaped piece I, a connecting hole V is formed in the center of a semicircular arc of the U-shaped piece I, two U-shaped grooves I are formed in the other end of the U-shaped piece I, and water overflow holes I for draining accumulated water deposited in the U-shaped piece I are formed in the middle of the bottom of the U-shaped piece I and correspond to the positions of the two U-shaped grooves I;
in the assembled and used state;
the bottom fixing device is flatly and firmly fixed with the structural part through an expansion bolt;
the bottom of the upright stanchion is inserted into the bottom fixing device in an interpolation way, and the bottom fixing device is fastened and fixed at the position where the nut is welded correspondingly by the bolt;
the cross rod is connected with the vertical rod through a clamping groove connecting piece buckled into the end part of the cross rod, and the skirting board is fixedly installed on the vertical rod through a lower buckle of the skirting board and an upper buckle of the skirting board.
A building site faces limit safety protection railing with adjustable angle's further technical scheme be: the connecting device also comprises a cross rod lengthening clamping groove connecting piece; the cross bar lengthening clamping groove connecting piece is made of a U-shaped piece II, four U-shaped grooves II are formed in the U-shaped piece II, and 4 water overflow holes II for draining accumulated water deposited in the U-shaped piece II are formed in the positions, corresponding to the four U-shaped grooves II, in the middle of the bottom of the U-shaped piece II;
under the condition that the length of the cross rod is not enough, the cross rod is lengthened by connecting the cross rod lengthening clamping groove connecting piece with the two cross rods, and the cross rod is firmly fixed by tightly jacking the upper surface of the cross rod through the fastening bolt IV.
A further technical scheme that the angle-adjustable limb safety protection guardrail for the construction site is: the bottom fixing device is formed by welding a bottom connecting plate and a short pipe, a connecting hole I is formed in one side of the short pipe close to the upper end 1/3, a connecting nut I and a fastening bolt I are welded at the position corresponding to the connecting hole I and penetrate through the nut I, and four bolt holes are formed in the bottom connecting plate and used for fixing with a structural member;
the upright stanchion is formed by welding a straight pipe and a top end sealing plate, and the middle part and the upper end part of the straight pipe are respectively provided with a connecting hole II.
Since the technical scheme is used, the utility model relates to an adjustable angle for building site faces limit safety protection railing compares with prior art, has following beneficial effect (beneficial effect will combine the characteristic description):
1. because the utility model relates to a building site faces the flexibility that adopts bolted connection very big improvement the construction between each part of limit safety protection railing with adjustable angle.
2. Because the utility model relates to a building site faces main component of limit safety protection railing with adjustable angle includes: bottom fixing device 1, pole setting 2, horizontal pole 7, baseboard 8 and be used for 2 with the pole setting 2 with horizontal pole 7 and pole setting 2 with baseboard 8 interconnect's buckle 3 under the baseboard, buckle 4 on the baseboard, horizontal pole tip draw-in groove connecting piece 5 and horizontal pole extension draw-in groove connecting piece 6 are the isolating construction, all can be at the mill prefabricated, can realize standardization, mass production, the component can repeatedly circulate and have enough to meet the need the use, thereby reduce the consumption and the waste of material, produce considerable economic benefits and reach reduce cost's purpose.
3. Because the utility model relates to a building site faces limit safety protection railing with adjustable angle is provided with movable baseboard buckle, can satisfy the installation of different angles, height and different width baseboard, has further guaranteed the security of construction.
4. Because the utility model relates to an adjustable angle for building site faces limit safety protection railing passes through bolted connection because of horizontal pole tip draw-in groove connecting piece and pole setting, the angle of regulation railing that can be random, not only convenient but also firm safety, very big improvement the efficiency and the holistic stability of installation dismantlement, further ensured the security performance.
5. Because the utility model relates to a building site faces limit safety protection railing with adjustable angle adopts the assembly of instrument formula, assembles the elegant appearance of high quality, further strengthened the outward appearance.
6. Because the utility model relates to an adjustable angle for building site faces limit safety protection railing has realized the regulation of horizontal pole length again and has fixed through horizontal pole tip draw-in groove connecting piece, horizontal pole extension draw-in groove connecting piece and railing fastening bolt, very big not isostructure building of having satisfied, and the arbitrary slope faces the installation of limit protection, and the construction flexibility is good.
7. Because the utility model relates to an adjustable angle for building site faces its horizontal pole tip draw-in groove connecting piece of limit safety protection railing and horizontal pole extension draw-in groove connecting piece and sets up porose spillway hole corresponding U type groove position in the U type spare bottom is in the house for the ponding of drainage deposit in U type spare inside, the first quality improvement of safety protection product has obtained the assurance.
8. Because the utility model relates to an adjustable angle for building site faces its horizontal pole tip draw-in groove connecting piece of limit safety protection railing and horizontal pole extension draw-in groove connecting piece and has seted up the U type recess for the horizontal pole fastening on U type spare, very big fastening regulation that has made things convenient for the railing installation.
To sum up, adopt the utility model relates to a building site faces limit safety protection railing with adjustable angle, the input of reducible people, machine, thing, material, reduction of erection time improves economic benefits, improves construction quality precision, has higher society, economic benefits.
The technical features of the adjustable angle limb safety guard rail for construction site of the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIGS. 1-2 are schematic structural views of 1 unit of the angle-adjustable limb safety guardrail for construction site of the present invention;
FIG. 1-1 corresponds to a safety guard rail unit I;
FIGS. 1-2 correspond to safety barrier unit II;
fig. 2-1 ~ 11 do the utility model relates to a building site faces subassembly structure schematic diagram of limit safety protection railing with adjustable angle:
FIGS. 2-1 to 2-2 are schematic structural views of the bottom fixing device;
FIG. 2-1 is a front view, and FIG. 2-2 is a top view of FIG. 2-1;
figure 3 is a schematic view of the structure of the vertical rod,
FIG. 4 is a schematic view of a lower buckle of a skirting board;
FIG. 5 is a schematic view of a buckle on the skirting board;
fig. 6-1 to 6-3 are schematic structural views of end clamping groove connecting pieces of the cross rod:
FIG. 6-1 is a front view, FIG. 6-2 is a top view, and FIG. 6-3 is a perspective view;
fig. 7-1-7-3 are schematic structural views of the cross bar lengthening clamping groove connecting piece:
FIG. 7-1 is a front view, FIG. 7-2 is a top view, and FIG. 7-3 is a perspective view;
FIGS. 8-1 to 8-2 are schematic structural views of a cross bar;
FIG. 8-1 is a front view, and FIG. 8-2 is a left side view of FIG. 8-1;
FIGS. 9-1 to 9-2 are schematic views of skirting boards;
FIG. 9-1 is a front view, and FIG. 9-2 is a left side view of FIG. 9-1;
FIG. 10 is a schematic view of a rail fastening bolt;
FIG. 11 is a schematic view of a gasket construction;
FIG. 12 is a perspective view of an application state of an adjustable angle limb safety protection rail for a construction site.
In the figure:
1-bottom fixing device, 11-bottom connecting plate, 12-short pipe, 13-connecting hole I, 14-nut I, 15-fastening bolt I;
2-upright rod, 21-straight tube, 23-connecting hole II;
3-a lower buckle of a skirting board, 31-a sleeve I, 32-an upward hook, 33-a connecting hole III, 34-a nut II, 35-a fastening bolt II;
4-a skirting board upper buckle, 41-a sleeve II, 42-a downward hook, 43-a connecting hole IV, 44-a nut III, 45-a fastening bolt III;
5-a clamping groove connecting piece at the end part of a transverse rod, 51-a U-shaped piece I, 511-a U-shaped groove I, 512-an overflow hole I, 52-a connecting hole V;
6-a transverse rod lengthening clamping groove connecting piece, a 61-U-shaped piece II, a 611-U-shaped groove II and a 612-overflow hole II;
7-cross bar, 8-skirting board, 9-fastening bolt IV, 10-gasket.
Detailed Description
An angle-adjustable limb safety protection guardrail for a construction site comprises a plurality of bottom fixing devices 1 with separate structures, upright posts 2, cross rods 7, skirting boards 8 and a plurality of connecting devices for connecting the upright posts 2, the cross rods 7 and the skirting boards 8 with one another, wherein the connecting devices at least comprise skirting board lower buckles 3, skirting board upper buckles 4 and cross rod end clamping groove connecting pieces 5;
as shown in fig. 2, the bottom fixing device 1 is formed by welding a bottom connecting plate 11 and a short pipe 12, a connecting hole i 13 is formed in one side of the short pipe 12 near the upper end 1/3, a connecting nut i 14 and a fastening bolt i 15 are welded at the position corresponding to the connecting hole i 13 and penetrate through the nut i 14, and four bolt holes 16 are formed in the bottom connecting plate 11 and used for fixing with a structural member;
as shown in fig. 3-1 to 3-2, the upright rod 2 is formed by welding a straight pipe 21 and a top end sealing plate 22, and a connecting hole ii 23 is respectively formed in the middle part and the upper end part of the straight pipe;
as shown in fig. 4, the lower buckle 3 of the skirting board is composed of a sleeve i 31 and an upward hook 32, a connecting hole iii 33 is formed in the middle of one side of the sleeve i 31, a nut ii 34 for connection is welded at the position corresponding to the connecting hole iii 33, and a fastening bolt ii 35 penetrates through the nut ii 34 to achieve the purposes of fastening the connection between the skirting board and the upright rod 2 and adjusting the connection angle between the skirting board and the upright rod 2 through adjustment; the upward hook 32 is formed by bending a short round steel bar by 90 degrees, one short end of the upward hook 32 is welded at the middle part of one side of the sleeve I31, and the hook of the upward hook 32 faces upwards (see fig. 4);
the skirting board upper buckle 4 comprises a sleeve II 41 and a downward clamping hook 42, a connecting hole IV 43 is formed in the middle of one side of the sleeve II 41, a connecting nut III 44 is welded at the position corresponding to the connecting hole IV 43, a fastening bolt III 45 penetrates through the nut III 44, the purposes of fastening the skirting board to be connected with the upright rod 2 and adjusting the connecting angle of the skirting board to the upright rod 2 are achieved through adjustment, the downward clamping hook 42 is formed by bending a short round steel by 90 degrees, one short end of the downward clamping hook 42 is welded to the middle of one side of the sleeve II 41, and the downward clamping hook 42 needs to be welded downwards when being welded (see fig. 5);
the transverse rod end clamping groove connecting piece 5 is made of a U-shaped piece I51, a connecting hole V52 is formed in the center of a semicircular arc of the U-shaped piece I, two U-shaped grooves I511 are formed in the other end of the U-shaped piece I, and water overflow holes I512 (shown in figures 6-1-6-3) for draining accumulated water deposited in the U-shaped piece I are formed in the middle of the bottom of the U-shaped piece I and correspond to the positions I of the two U-shaped grooves.
In the assembled and used state;
the bottom fixing device 1 is flatly and firmly fixed with a structural part through an expansion bolt;
the bottom of the upright rod 2 is inserted into the bottom fixing device 1 in an interpolation mode, and a nut is welded on the bottom fixing device correspondingly through a bolt for fastening and fixing;
the cross rod 7 is connected with the vertical rod 2 through a clamping groove connecting piece 5 buckled into the end part of the cross rod, and the skirting board 8 is fixedly installed on the vertical rod 2 through a lower skirting board buckle 3 and an upper skirting board buckle 4 to form a safety protection railing unit I (see fig. 1-1).
Under the condition that the length of the cross rod is insufficient, the cross rod is lengthened by connecting two cross rods through the cross rod lengthening clamping groove connecting piece 6, and the cross rod is firmly fixed by jacking the upper surface of the cross rod through a fastening bolt IV 9 to form a safety protection guardrail unit II (see the figure 1-2);
the cross bar lengthening clamping groove connecting piece 6 is made of a U-shaped piece II 61, four U-shaped grooves II 611 are formed in the U-shaped piece II, and 4 water overflow holes II 612 for draining accumulated water deposited in the U-shaped piece II are formed in the positions, corresponding to the four U-shaped grooves II, in the middle of the bottom of the U-shaped piece II (see the figures 7-1-7-3).
Under the assembly user state, according to the building site protection needs, make a plurality of safety protection railing unit I, safety protection railing unit II and connect into an integral one kind for building site face limit safety protection railing with adjustable angle (refer to fig. 12).
The utility model relates to a building site faces limit safety protection railing each parts raw and other materials and all adopts ready-made steel member preparation to form with adjustable angle:
1. the short sleeve 12 and the upright post 2 of the bottom fixing device are both made of a section steel square pipe (see fig. 2-1-3), the inner diameter of the section steel pipe of the short sleeve 12 ensures that the upright post can be inserted smoothly, and a gap between the inner wall of the base section steel square pipe and the outer diameter of the upright post section steel square pipe is reserved preferably between 2mm and 3 mm; the base bottom plate is made of steel plates, the thickness of the plate is preferably 10mm-12mm, the bottom plate is a square plate, and the width and the length of the bottom plate are 140 mm-150 mm;
2. the sleeves of the lower buckle 3 and the upper buckle 4 of the skirting board are also made of section steel which is the same as the section steel of the short sleeve 12 of the base;
3. the end clamping groove connecting piece 5 of the transverse rod and the long clamping groove connecting piece 6 of the transverse rod are bent into a U-shaped piece by a steel plate;
4. the cross rod is a section steel square pipe fitting, and the length can be adjusted through a rail end clamping groove and a rail extension clamping groove (see fig. 8-1-8-2);
5. the skirting board is made of flat steel plates (see the figure 9-1-9-2);
the specific dimensions of the components are determined as required, and the manufacturing method can be realized by those skilled in the art according to the known knowledge, and is not described in detail herein.
When the construction is finished, when the adjustable angle faces the limit safety protection railing for the building site, loosen the bolt for fastening of each part earlier, can demolish one by one, it is very convenient, and do not influence main part stair quality.
Claims (3)
1. The utility model provides an adjustable angle faces limit safety protection railing for building site, includes bottom fixing device (1), pole setting (2), horizontal pole (7), baseboard (8) and a plurality of connecting device that are used for pole setting (2), horizontal pole (7) and baseboard (8) interconnect of isolating construction, its characterized in that: the connecting device comprises a skirting board lower buckle (3), a skirting board upper buckle (4) and a cross rod end clamping groove connecting piece (5);
the lower buckle (3) of the skirting board consists of a sleeve I (31) and an upward clamping hook (32), a connecting hole III (33) is formed in the middle of one side of the sleeve I (31), a connecting nut II (34) is welded at the position corresponding to the connecting hole III (33), and a fastening bolt II (35) penetrates through the nut II (34) to fasten and connect the upward clamping hook of the skirting board and the vertical rod; the upward hook (32) is formed by bending a short round steel by 90 degrees, one short end of the upward hook (32) is welded in the middle of one side of the sleeve I (31), and the hook of the upward hook (32) faces upwards;
the skirting board upper buckle (4) is composed of a sleeve II (41) and a downward clamping hook (42), a connecting hole IV (43) is formed in the middle of one side of the sleeve II (41), a connecting nut III (44) is welded at the position corresponding to the connecting hole IV (43), a fastening bolt III (45) penetrates through the nut III (44) to fasten and connect the skirting board downward clamping hook with the vertical rod, the downward clamping hook (42) is formed by bending a short round steel for 90 degrees, one short end of the downward clamping hook (42) is welded in the middle of one side of the sleeve II (41), and the downward clamping hook (42) is required to be welded downwards when being welded;
the transverse rod end clamping groove connecting piece (5) is made of a U-shaped piece I (51), a connecting hole V (52) is formed in the center of a semicircular arc of the U-shaped piece I, two U-shaped grooves I (511) are formed in the other end of the U-shaped piece I, and overflow holes I (512) for draining accumulated water deposited in the U-shaped piece I are formed in the middle of the bottom of the U-shaped piece I and correspond to the two U-shaped grooves I;
in the assembled and used state;
the bottom fixing device (1) is flatly and firmly fixed with a structural part through an expansion bolt;
the bottom of the upright rod (2) is inserted into the bottom fixing device (1) in an interpolation mode, and a nut is welded on the bottom device correspondingly through a bolt for fastening and fixing;
the cross rod (7) is connected with the vertical rod (2) by being buckled into a clamping groove connecting piece (5) at the end part of the cross rod, and the skirting board (8) is installed and fixed on the vertical rod (2) by the lower buckle (3) of the skirting board and the upper buckle (4) of the skirting board.
2. The adjustable angle limb safety protection rail for the construction site according to claim 1, which is characterized in that: the connecting device also comprises a cross rod lengthening clamping groove connecting piece (6); the cross bar lengthening clamping groove connecting piece (6) is made of a U-shaped piece II (61), four U-shaped grooves II (611) are formed in the U-shaped piece II, and 4 water overflow holes II (612) for draining accumulated water deposited in the U-shaped piece II are formed in the positions, corresponding to the four U-shaped grooves II, in the middle of the bottom of the U-shaped piece II;
under the condition that horizontal pole length is not enough, connect two horizontal poles through horizontal pole extension draw-in groove connecting piece and realize lengthening the horizontal pole, push up the horizontal pole upper surface through fastening bolt IV (9) and fix firmly the horizontal pole.
3. The adjustable angle limb safety protection rail for the construction site according to claim 1 or 2, which is characterized in that: the bottom fixing device (1) is formed by welding a bottom connecting plate (11) and a short pipe (12), a connecting hole I (13) is formed in one side of the short pipe (12) close to the upper end 1/3, a connecting nut I (14) for connection and a fastening bolt I (15) penetrate through the connecting hole I (14) in a welding mode corresponding to the connecting hole I (13), and four bolt holes (16) are formed in the bottom connecting plate (11) and used for being fixed with a structural member;
the upright rod (2) is formed by welding a straight pipe (21) and a top end sealing plate (22), and the middle part and the upper end part of the straight pipe are respectively provided with a connecting hole II (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266376.3U CN210032698U (en) | 2018-12-29 | 2018-12-29 | Adjustable angle for building site faces limit safety protection railing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266376.3U CN210032698U (en) | 2018-12-29 | 2018-12-29 | Adjustable angle for building site faces limit safety protection railing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210032698U true CN210032698U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822266376.3U Expired - Fee Related CN210032698U (en) | 2018-12-29 | 2018-12-29 | Adjustable angle for building site faces limit safety protection railing |
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| CN (1) | CN210032698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379430A (en) * | 2018-12-29 | 2020-07-07 | 广西建工集团第五建筑工程有限责任公司 | Angle-adjustable limb safety protection railing for construction site and installation and construction method thereof |
-
2018
- 2018-12-29 CN CN201822266376.3U patent/CN210032698U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379430A (en) * | 2018-12-29 | 2020-07-07 | 广西建工集团第五建筑工程有限责任公司 | Angle-adjustable limb safety protection railing for construction site and installation and construction method thereof |
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Granted publication date: 20200207 |