CN112878720B - Life rope fixing device for steel beam installation and using method thereof - Google Patents
Life rope fixing device for steel beam installation and using method thereof Download PDFInfo
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- CN112878720B CN112878720B CN202110062609.1A CN202110062609A CN112878720B CN 112878720 B CN112878720 B CN 112878720B CN 202110062609 A CN202110062609 A CN 202110062609A CN 112878720 B CN112878720 B CN 112878720B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention relates to the field of life rope mounting equipment, in particular to a life rope fixing device for mounting a steel beam and a using method thereof, wherein the life rope fixing device comprises a fixing mechanism, the fixing mechanism comprises a bracket, the bracket is connected with the steel beam through a buckle, and the buckle comprises a main buckle; the main buckle comprises a main clamping body, and the main clamping body is connected with the edge of the steel beam through a fastening part; the upper end of the main clamping body is connected with the bracket. The invention discloses a life rope fixing device for mounting steel beams, which can realize the mounting of life ropes and finally facilitate the connection of safety belts through the arrangement of a fixing mechanism.
Description
Technical Field
The invention relates to the field of life rope mounting equipment, in particular to a life rope fixing device for mounting a steel beam and a using method thereof.
Background
Along with the rapid development of urbanization, the land resources are increasingly lacking, more and more high-rise buildings are pulled out, and the steel structure becomes a new development direction of the high-rise buildings due to the advantages of light dead weight, high strength, excellent structural performance, short construction period, flexible layout, high space utilization rate, energy conservation, environmental protection and the like.
In the high-rise steel structure building, when carrying out girder steel eminence welding and bolted connection construction, the safety belt does not have the point of hanging, has the eminence potential safety hazard of falling, so in order to make things convenient for the connection of safety belt, needs a safety belt fixed equipment to assist the safe connection who realizes the safety belt.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a life rope fixing device convenient for installation of a safety belt.
In order to achieve the purpose, the invention adopts the technical scheme that:
a life rope fixing device for mounting a steel beam comprises a fixing mechanism, wherein the fixing mechanism comprises a support, the support is connected with the steel beam through a buckle, and the buckle comprises a main buckle; the main buckle comprises a main clamping body, and the main clamping body is connected with the edge of the steel beam through a fastening part; the upper end of the main clamping body is connected with the bracket.
The main clamping body is provided with a main clamping groove connected with the upper flange of the steel beam.
The buckle further comprises an auxiliary buckle, the auxiliary buckle comprises an auxiliary clamp body, and the auxiliary clamp body comprises an auxiliary clamp groove; the auxiliary clamping body is clamped on the steel beam through the auxiliary clamping groove.
The auxiliary card body is connected with the main card body through a connecting piece; the auxiliary buckle is connected with the steel beam through the fastening part.
The connecting piece comprises a connecting piece, a connecting hole is formed in the connecting piece, and two ends of the connecting piece are connected with the auxiliary clamping body and the main clamping body through fastening parts respectively.
The main card body and the auxiliary card body are arranged oppositely; the main clamping body and the auxiliary clamping body are arranged on two opposite sides of the same steel beam.
The main clamp body is provided with a positioning transverse groove, and the auxiliary clamp body is provided with a connecting transverse groove and a penetrating transverse groove; the penetrating transverse groove is communicated with the connecting transverse groove; the connecting transverse groove and the positioning transverse groove are oppositely arranged; one side of the connecting sheet close to the main clamping body is placed in the positioning transverse groove; one side of the connecting sheet close to the auxiliary clamping body penetrates through the connecting transverse groove; one end of the connecting piece close to the connecting transverse groove penetrates through the penetrating transverse groove and extends to the outer side of the auxiliary clamping body.
The support comprises a vertical rod connected with the main clamp body, and a hanging lug for connection is arranged on the vertical rod.
The fixing device comprises a plurality of fixing mechanisms, and the fixing mechanisms are arranged in parallel.
A construction method of a life line fixing device for steel beam installation, the construction method comprising the steps of:
s1, selecting fixing mechanisms with proper sizes, and selecting at least two fixing mechanisms; assembling each fixing mechanism on the corresponding steel beam;
s2, mounting a main buckle, namely buckling the main buckle on one side of the flange at the upper part of the steel beam and connecting the main buckle to the bottom surface of the flange at the upper part of the steel beam through a fastening part;
s3, mounting an auxiliary buckle: buckling an auxiliary buckle on one side of the flange at the upper part of the steel beam; the auxiliary buckles and the main buckles are distributed on two sides of the flange of the upper part of the steel beam; the auxiliary buckle is also connected with the flange at the upper part of the steel beam through a fastening part;
s4, mounting a connecting piece: the connecting piece penetrates through the auxiliary buckle and the end part of the connecting piece is placed in the positioning transverse groove of the main clamping body; after the connecting piece is placed, the connecting piece is respectively connected with the main card body and the auxiliary card body by using the fastening part;
s5, repeating the steps S2-S4, and assembling each fixing mechanism;
s6, installing a life rope: the life rope is connected to the hangers of each fixing mechanism in a penetrating manner and is fixed;
s7, subsequent use: and hanging the safety belt on the life rope, and carrying out corresponding installation operation.
The invention has the advantages that:
the invention discloses a life rope fixing device for mounting a steel beam, which can realize the mounting of a life rope and finally facilitate the connection of a safety belt through the arrangement of a fixing mechanism.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a schematic structural view of the fixing mechanism and the steel beam after being connected.
Fig. 3 is a schematic structural view of the fixing mechanism of the present invention.
Fig. 4 is a schematic structural view of the main buckle and the bracket of the present invention after connection.
Fig. 5 is a schematic structural view of the hanger of the present invention after being connected to the vertical rod by the clamp.
Fig. 6 is a schematic structural view of the hoop and the column in the present invention.
Fig. 7 is an exploded view of the clip of the present invention.
The labels in the above figures are:
1. life rope, 2, support, 3, buckle, 31, main buckle, 311, main card body, 312, main draw-in groove, 213, location transverse groove, 32, vice buckle, 321, vice card body, 322, vice draw-in groove, 323, connection transverse groove, 324, run-through transverse groove, 33, connecting piece, 4, girder steel.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
A life rope fixing device for mounting a steel beam 4 comprises a fixing mechanism, wherein the fixing mechanism comprises a support 2, the support 2 is connected with the steel beam 4 through a buckle 3, and the buckle 3 comprises a main buckle 31; the main buckle 31 comprises a main buckle body 311, and the main buckle body 311 is connected with the edge of the steel beam 4 through a fastening part; the upper end of the main card body 311 is connected with the bracket 2; the invention discloses a life rope fixing device for mounting a steel beam 4, which can realize the mounting of a life rope 1 and finally facilitate the connection of a safety belt through the arrangement of a fixing mechanism; in addition, in the invention, the buckle 3 is connected with the steel beam 4, the buckle 3 comprises a main buckle 31, the main buckle 31 is fixed on the steel beam 4, the main buckle 31 is provided with the bracket 2, and the bracket 2 is used for connecting the life rope 1; in addition, the fixing device disclosed in the invention at least comprises two fixing mechanisms which are distributed on the steel beam 4 at intervals; the fixing mechanisms distributed at intervals are used for connecting the life rope 1, so that the subsequent safety rope connection is facilitated.
Preferably, in the present invention, the main card body 311 is provided with a main card slot 312 connected to the upper flange of the steel beam 4; the main clamping groove 312 is arranged, so that the main clamping buckle 31 is conveniently connected with the steel beam 4; the arrangement of the main clamping groove 312 facilitates the initial positioning when the main clamping buckle 31 is fixedly connected with the steel beam 4, and simultaneously avoids the problem that the subsequent bracket 2 inclines; the stability of the connection of the fixing mechanism is ensured.
Preferably, the clip 3 further comprises a secondary clip 32, the secondary clip 32 comprises a secondary clip body 321, and the secondary clip body 321 comprises a secondary slot 322; the auxiliary clamping body 321 is clamped on the steel beam 4 through an auxiliary clamping groove 322; the auxiliary buckle 32 can also be connected with the steel beam 4 through an auxiliary clamping groove 322, and the auxiliary clamping groove 322 plays a positioning role; meanwhile, the main buckle 31 and the auxiliary buckle 32 are connected with each other, so that the stability of connection between the buckle 3 and the steel beam 4 can be better ensured.
Preferably, the sub card body 321 is connected with the main card body 311 through a connecting member 33; the auxiliary buckle 32 is connected with the steel beam 4 through a fastening part; the connecting member 33 is disposed so that the main card body 311 and the sub card body 321 can be spaced apart; the subsequent arrangement of the main catch 31 and the sub-catch 32 is facilitated.
Preferably, the connecting member 33 of the present invention includes a connecting plate, the connecting plate is provided with a connecting hole, and two ends of the connecting plate are respectively connected with the sub card body 321 and the main card body 311 through fastening components; the connection piece can realize the connection between the auxiliary card body 321 and the main card body 311, and the connection piece is convenient to connect with the main card body 311 or the auxiliary card body 321 through the arrangement of the connection hole.
Preferably, the main card body 311 and the sub card body 321 are oppositely arranged in the present invention; the main card body 311 and the auxiliary card body 321 are arranged on two opposite sides of the same steel beam 4; due to the arrangement, the overall placement stability of the whole buckle 3 structure can be ensured, and meanwhile, the main clamping body 311 and the auxiliary clamping body 321 are arranged oppositely, so that the main clamping groove 312 and the auxiliary clamping groove 322 are also arranged oppositely, and can be well clamped at the flange at the upper part of the steel beam 4; and the connection integrity of the main buckle 31 and the auxiliary buckle 32 can be ensured by arranging the connecting sheet.
Preferably, in the present invention, the main card body 311 is provided with a positioning transverse groove 313, and the auxiliary card body 321 is provided with a connecting transverse groove 323 and a penetrating transverse groove 324; the penetrating transverse groove 324 is communicated with the connecting transverse groove 323; the connecting transverse groove 323 is opposite to the positioning transverse groove 313; the connecting piece is arranged in the positioning transverse groove 313 close to one side of the main card body 311; one side of the connecting sheet close to the auxiliary clamping body 321 is arranged by penetrating through the connecting transverse groove 323; one end of the connecting piece, which is close to the connecting transverse groove 323, penetrates through the penetrating transverse groove 324 and extends to the outer side of the auxiliary card body 321; the arrangement of the positioning transverse groove 313 facilitates the connection between the connecting piece and the main card body 311, the arrangement of the connecting transverse groove 323 facilitates the connection between the connecting piece and the auxiliary card body 321, and in addition, the arrangement of the through transverse groove 324 enables the connecting piece to pass through the auxiliary card body 321; therefore, the length of the connecting piece between the main card body 311 and the auxiliary card body 321 can be changed according to requirements, and the stability of connection between the main card body 311 and the auxiliary card body 321 is ensured.
Preferably, the bracket 2 of the invention comprises an upright rod 21 connected with the main card body 311, and the upright rod 21 plays a role of elevating, thereby conveniently improving the installation height of different life ropes 1 selected according to the requirement; in addition, a hanging lug 22 for connection is arranged on the upright rod 21; the arrangement of the hanging lugs 22 facilitates the connection between the life rope 1 and the upright rod 21.
Preferably, the hanging lug 22 is connected to the upright rod 21 through a hoop, and the arrangement of the hoop can facilitate the selection of the position of the hanging lug 22 on the upright rod 21, so that the hanging height of the safety rope can be conveniently adjusted; in addition, the clamp comprises a left clamp 221 and a right clamp 222, the left clamp 221 and the right clamp 222 are arranged oppositely, and the left clamp 221 and the right clamp 222 are connected through bolts; in addition, a hanging groove 227 is formed in the end portion of the left clamp 221, a hanging block 228 is formed in the end portion of the right clamp 222, and the hanging block 228 is clamped in the hanging groove 227; the horizontal projection of the hanging block 228 and the hanging groove 227 is T-shaped; the hanging groove 227 is longitudinally arranged, and the upper end of the hanging groove 227 is communicated with the outer side surface of the left clamp 221; the depth of the hanging groove 227 is smaller than the width of the left clamp 221, and due to the arrangement, the hanging groove 227 is not a through groove structure, and when the hanging block 228 is clamped in the hanging groove 227, a good limiting effect is achieved; the connection stability of the left clamp 221 and the right clamp 222 is ensured; meanwhile, as a greater optimization, in the invention, the hanging sliding blocks 225 are arranged on the inner walls of the left clamp 221 and the right clamp 222, the hanging sliding grooves 226 are arranged on the upright rods 21, and the hanging sliding blocks 225 are matched with the hanging sliding grooves 226, so that the clamps can be ensured to transversely rotate after the position of the safety rope is determined; in addition, in the invention, the hanging slide block 225 is connected with the left clamp 221 and the right clamp 222 through a plug-in part, the plug-in part comprises a plug-in groove 229 arranged on the left clamp 221 or the right clamp 222, the hanging slide block 225 is arranged in the plug-in groove 229, the hanging slide block 225 can transversely move in the plug-in groove 229, and when in actual use, after the position of the clamp is limited, the hanging slide block 225 is manually pressed, so that the hanging slide block 225 is inserted into the hanging slide groove 226; when the clamp needs to move, the hanging slide block 225 is manually pulled to be separated from the hanging chute 226; the clamp can prevent rotation well when normal movement of the clamp is not influenced; in addition, the locking nut 223 is arranged on the vertical rod 21; two locking nuts 223 are arranged on the upright rod 21; the two locking nuts 223 are distributed at the upper end and the lower end of the hoop, so that a good longitudinal limiting effect is achieved, and the hoop is prevented from moving longitudinally; the hanging lug can be directly welded on the upright post; if the connecting position of the life rope needs to be changed, a plurality of hangers are welded on the upright post.
Preferably, the fixing device comprises a plurality of fixing mechanisms, the plurality of fixing mechanisms are arranged, the fixing device can be suitable for connecting life ropes 1 with different lengths, and meanwhile, the stability of connection of the life ropes 1 can be ensured; in addition, all the fixing mechanisms are arranged in parallel; the life rope 1 is convenient to be connected with the fixing mechanism.
A construction method of a life line fixing device for installing a steel beam 4 comprises the following steps:
s1, selecting fixing mechanisms with proper sizes, and selecting at least two fixing mechanisms; assembling each fixing mechanism on the corresponding steel beam 4;
s2, installing a main buckle 31, namely buckling the main buckle 31 on one side of the upper flange of the steel beam 4 and connecting the main buckle 31 to the bottom surface of the upper flange of the steel beam 4 through a fastening part;
s3, mounting an auxiliary buckle 32: the auxiliary buckle 32 is buckled on one side of the flange at the upper part of the steel beam 4; the auxiliary buckles 32 and the main buckles 31 are distributed on two sides of the upper flange of the steel beam 4; the auxiliary buckle 32 is also connected with the upper flange of the steel beam 4 through a fastening part;
s4, mounting a connecting piece 33: the connecting piece 33 passes through the auxiliary buckle 32 and the end part of the connecting piece 33 is placed in the positioning transverse groove 313 of the main card body 311; after the connecting piece 33 is placed, the connecting piece 33 is respectively connected with the main card body 311 and the auxiliary card body 321 by using a fastening part;
s5, repeating the steps S2-S4, and assembling each fixing mechanism;
s6, installing the life rope 1: the life rope 1 is connected on the hanging ears 22 of each fixing mechanism in a penetrating way and is fixed;
s7, subsequent use: the safety belt is hung on the life rope 1, and corresponding installation operation is carried out.
It is clear that the specific implementation of the invention is not restricted to the above-described modes, and that various insubstantial modifications of the inventive concept and solution are within the scope of protection of the invention.
Claims (4)
1. A life rope fixing device for mounting a steel beam is characterized by comprising a fixing mechanism, wherein the fixing mechanism comprises a bracket, the bracket is connected with the steel beam through a buckle, and the buckle comprises a main buckle; the main buckle comprises a main clamping body, and the main clamping body is connected with the edge of the steel beam through a fastening part; the upper end of the main clamping body is connected with the bracket;
the main clamping body is provided with a main clamping groove connected with the upper flange of the steel beam;
the buckle further comprises an auxiliary buckle, the auxiliary buckle comprises an auxiliary clamp body, and the auxiliary clamp body comprises an auxiliary clamp groove; the auxiliary clamping body is clamped on the steel beam through the auxiliary clamping groove;
the auxiliary card body is connected with the main card body through a connecting piece; the auxiliary buckle is connected with the steel beam through a fastening part;
the connecting piece comprises a connecting piece, a connecting hole is formed in the connecting piece, and two ends of the connecting piece are connected with the auxiliary clamping body and the main clamping body respectively through fastening parts;
the main clamp body is provided with a positioning transverse groove, and the auxiliary clamp body is provided with a connecting transverse groove and a penetrating transverse groove; the penetrating transverse groove is communicated with the connecting transverse groove; the connecting transverse groove and the positioning transverse groove are oppositely arranged;
one side of the connecting sheet close to the main clamping body is placed in the positioning transverse groove; one side of the connecting sheet close to the auxiliary clamping body penetrates through the connecting transverse groove; one end of the connecting sheet close to the connecting transverse groove penetrates through the penetrating transverse groove and extends to the outer side of the auxiliary clamping body; the support comprises a vertical rod connected with the main clamp body, and a hanging lug for connection is arranged on the vertical rod;
the hanging lug is connected to the vertical rod through a hoop;
the clamp comprises a left clamp and a right clamp, the left clamp and the right clamp are arranged oppositely, and the left clamp and the right clamp are connected through a bolt; in addition, a hanging groove is formed in the end part of the left clamp, a hanging block is arranged on the end part of the right clamp, and the hanging block is clamped in the hanging groove; the horizontal projection of the hanging block and the hanging groove is in a T shape; the hanging groove is longitudinally arranged, and the upper end of the hanging groove is communicated with the outer side surface of the left clamp; the depth of the hanging groove is smaller than the width of the left clamp;
hanging sliding blocks are arranged on the inner walls of the left clamp and the right clamp, hanging sliding grooves are arranged on the vertical rods, and the hanging sliding blocks are matched with the hanging sliding grooves; the hanging sliding block is connected with the left hoop and the right hoop through an inserting part, the inserting part comprises an inserting groove arranged on the left hoop or the right hoop, the hanging sliding block is arranged in the inserting groove, and the hanging sliding block can move transversely in the inserting groove;
in addition, a locking nut is arranged on the vertical rod; two locking nuts are arranged on the vertical rod; the two locking nuts are distributed at the upper end and the lower end of the hoop; the locking nut plays a good role in longitudinally limiting the clamp, and the clamp is prevented from moving longitudinally;
when the clamp is used, after the position of the clamp is limited, the hanging sliding block is manually pressed, so that the hanging sliding block is inserted into the hanging sliding groove; when the clamp needs to move, the hanging slide block is manually pulled to be separated from the hanging chute.
2. The life line fixing device for steel beam installation according to claim 1, wherein the main clamping body and the auxiliary clamping body are oppositely arranged; the main clamping body and the auxiliary clamping body are arranged on two opposite sides of the same steel beam.
3. The life rope fixing device for installing the steel beam as claimed in claim 1, wherein the fixing device comprises a plurality of fixing mechanisms, and each fixing mechanism is arranged in parallel.
4. A construction method of a life line fixing device for steel beam installation as claimed in any one of claims 1 to 3, wherein the construction method comprises the steps of:
s1, selecting fixing mechanisms with proper sizes, and selecting at least two fixing mechanisms; assembling each fixing mechanism on the corresponding steel beam;
s2, mounting a main buckle, namely buckling the main buckle on one side of the upper flange of the steel beam and connecting the main buckle to the bottom surface of the upper flange of the steel beam through a fastening part;
s3, mounting an auxiliary buckle: buckling an auxiliary buckle on one side of the flange at the upper part of the steel beam; the auxiliary buckles and the main buckles are distributed on two sides of the flange of the upper part of the steel beam; the auxiliary buckle is also connected with the upper flange of the steel beam through a fastening part;
s4, mounting a connecting piece: the connecting piece penetrates through the auxiliary buckle and the end part of the connecting piece is placed in the positioning transverse groove of the main clamping body; after the connecting piece is placed, the connecting piece is respectively connected with the main clamping body and the auxiliary clamping body by using the fastening part;
s5, repeating the steps S2-S4, and assembling each fixing mechanism;
s6, installing a life rope: the life rope is connected to the hangers of each fixing mechanism in a penetrating manner and is fixed;
s7, subsequent use: and hanging the safety belt on the life rope, and carrying out corresponding installation operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062609.1A CN112878720B (en) | 2021-01-18 | 2021-01-18 | Life rope fixing device for steel beam installation and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062609.1A CN112878720B (en) | 2021-01-18 | 2021-01-18 | Life rope fixing device for steel beam installation and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112878720A CN112878720A (en) | 2021-06-01 |
| CN112878720B true CN112878720B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110062609.1A Active CN112878720B (en) | 2021-01-18 | 2021-01-18 | Life rope fixing device for steel beam installation and using method thereof |
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| Country | Link |
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| CN (1) | CN112878720B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2357112A (en) * | 1999-12-01 | 2001-06-13 | Jason Paul Mcinulty | Safety line system |
| DE202009010707U1 (en) * | 2009-08-07 | 2009-10-08 | Abs Safety Gmbh | fall Protection |
| CN201933785U (en) * | 2010-12-08 | 2011-08-17 | 中建钢构有限公司 | Annular anchor ear for installing safety rope on tubular column by means of pulling |
| CN203947786U (en) * | 2014-06-17 | 2014-11-19 | 中国建筑第二工程局有限公司 | adjustable mobile base |
| CN204152225U (en) * | 2014-09-03 | 2015-02-11 | 中国建筑第八工程局有限公司 | Lifeline is drawn and is established fastening devices |
| CN207260623U (en) * | 2017-09-20 | 2018-04-20 | 广州市番禺区第五建筑工程公司 | Edge protection frame |
| CN209556337U (en) * | 2018-11-08 | 2019-10-29 | 辛凤 | A kind of civil engineering scaffold clasp |
| CN209604369U (en) * | 2019-02-18 | 2019-11-08 | 马鞍山市恒大线路器材有限公司 | A kind of three-dimensional combined type bracing wire anchor ear |
| CN210134661U (en) * | 2019-03-27 | 2020-03-10 | 云南建投第十三建设有限公司 | Device for fixing life rope of steel pipe scaffold |
-
2021
- 2021-01-18 CN CN202110062609.1A patent/CN112878720B/en active Active
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| CN112878720A (en) | 2021-06-01 |
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