CN112412077A - Elevator shaft safety isolation protection construction device and construction method thereof - Google Patents
Elevator shaft safety isolation protection construction device and construction method thereof Download PDFInfo
- Publication number
- CN112412077A CN112412077A CN202010927390.2A CN202010927390A CN112412077A CN 112412077 A CN112412077 A CN 112412077A CN 202010927390 A CN202010927390 A CN 202010927390A CN 112412077 A CN112412077 A CN 112412077A
- Authority
- CN
- China
- Prior art keywords
- elevator shaft
- safety isolation
- protection
- steel pipe
- construction device
- 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
Links
Images
Classifications
-
- 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
- E04G21/3266—Safety nets
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention relates to a safety isolation protection construction device for an elevator shaft and a construction method thereof, wherein the safety isolation protection construction device comprises a positioning plate fixedly arranged on a floor slab concrete layer, a support frame is assembled on the positioning plate, one end of the support frame and the positioning plate form an inclination angle of 45 degrees, and the other end of the support frame abuts against the inner wall of an elevator shaft; the support frame is provided with a square protective net which is formed by erecting reinforcing steel bars, and the square protective net is arranged above the wellhead of the elevator shaft. The elevator shaft safety isolation protection construction device is simple in structure, convenient and practical, the elevator shaft safety isolation protection construction device can improve the isolation protection construction efficiency of the elevator shaft of the floor at the construction site, and meanwhile, the economy, the safety and the reliability are considered.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a safety isolation protection construction device for an elevator shaft and a construction method thereof.
Background
With the continuous development of cities, more and more large-scale integrated buildings, high-rise and super high-rise residential buildings appear. Building construction belongs to the high-risk industry, and the eminence falls as one of five major injuries in job site, and the accident proportion that accounts for is high, and the entrance to a cave protection that reaches one end such as elevator well, tail gas well in the building is the key place of prevention eminence accident that falls. In the building construction safety inspection standard JGJ59-2011, the protection requirements of the hoistway are as follows: a safety flat net should be arranged in every two floors (not more than 10M) in the elevator shaft. At present, in the construction site, for horizontal protection of an elevator shaft, a steel pipe inclined supporting method is adopted in the traditional method, and the steel pipe inclined supporting method has large short plates in safety, reliability, economy and convenience. The main points are as follows: firstly, steel pipes with similar lengths and capable of meeting the width requirement of a hoistway need to be found in advance, and cutting operation, labor and materials are required frequently; two steel pipes at the longitudinal end part and the first crosspiece steel pipe need to be fixed simultaneously, so that the requirement on the technical level of workers is high, and professional technical workers are needed; and thirdly, the safety of the whole horizontal protection frame is mainly supported by two fasteners at the end part, the horizontal protection frame not only bears the pressure of the frame, but also resists the impact force formed by the upper solid object, the fasteners can burst, and the whole frame falls. Fourthly, the quality reliability is poor, and the unified construction standard is not available. The problem that garbage on the isolation frame is difficult to clean and the like can be caused by the small inclination angle.
In view of the above problems, it is necessary to improve them.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the safety isolation and protection construction device and the construction method thereof, which have the advantages of simple structure and reasonable design, meet the safety production requirements of a construction site, and can improve the construction efficiency and the safety protection of the elevator shaft.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a safety isolation protection construction device for an elevator shaft comprises a positioning plate fixedly arranged on a concrete layer of a floor slab, wherein a support frame is assembled on the positioning plate, one end of the support frame and the positioning plate form an inclination angle of 45 degrees, and the other end of the support frame abuts against the inner wall of an elevator shaft; the support frame is provided with a square protective net which is formed by erecting reinforcing steel bars, and the square protective net is arranged above the wellhead of the elevator shaft.
As a preferred scheme of the present invention, the positioning plate includes a connecting plate and a mounting plate; the connecting plate is perpendicular to the mounting plate, and the connecting plate is fixedly connected with the mounting plate and integrally formed.
In a preferred embodiment of the present invention, the connecting plate and the mounting plate are made of steel plates with a thickness of 3mm and a size of 120mm × 150 mm.
As a preferred scheme of the invention, the support frame comprises a plurality of length-adjustable support rods and a transverse steel pipe, and the transverse steel pipe is fastened with the support rods through steel pipe buckles; the square protective net is arranged on the transverse steel pipe and the supporting rod.
As a preferable scheme of the invention, the plurality of support rods are arranged at equal intervals, and the distance between every two adjacent support rods is not more than 400 mm.
As a preferred scheme of the present invention, the support rod comprises an adjusting nut, an inner screw rod and an outer steel tube; the adjusting nut is used for connecting the inner screw rod and the outer steel pipe.
According to a preferable scheme of the invention, a clamping groove is formed in the bottom of the adjusting nut, the outer steel pipe is embedded in the clamping groove, internal threads are formed on the inner side wall of the adjusting nut along the length direction, and the internal threads are matched with the internal screw rod in a screwed mode.
As a preferable scheme of the present invention, an adjusting handle for rotating the adjusting nut is disposed outside the adjusting nut.
As a preferable scheme of the invention, the protective net comprises transverse ribs and longitudinal ribs which are arranged in a transverse and longitudinal staggered manner, and the transverse ribs and the longitudinal ribs are connected by welding or bound by steel wires.
A construction method of an elevator shaft safety isolation protection construction device comprises the following steps:
step 4, sequentially installing all the support rods, connecting the end parts of the adjacent support rods with the transverse steel pipes, and connecting the support rods with the transverse steel pipes through steel pipe fasteners;
The invention has the beneficial effects that:
the elevator shaft safety isolation protection construction device is simple in structure, convenient and practical, the elevator shaft safety isolation protection construction device can improve the isolation protection construction efficiency of the elevator shaft of the floor at the construction site, and meanwhile, the economy, the safety and the reliability are considered; by adopting the finished adjustable screw, the construction is fast, the protection quality is easy to check, the labor cost (no professional scaffold is needed) and the material cost (the outer sleeve pipe uses a conventional steel pipe and does not need to be cut) can be reduced, and the safety and the reliability are improved.
Drawings
FIG. 1 is a cross-sectional view of a safety isolation guard in accordance with the present invention;
FIG. 2 is a schematic view of the adjustment of the support rods of the present invention;
FIG. 3 is a schematic view of an adjusting nut according to the present invention;
FIG. 4 is a top plan view of the safety isolation guard of the present invention;
fig. 5 is a schematic view of a protective net structure of the present invention;
reference numbers in the figures: the concrete floor comprises a positioning plate 1, a connecting plate 1-1, a mounting plate 1-2, a supporting rod 2, a clamping groove 2-1, internal threads 2-2, an adjusting handle 2-3, an internal screw rod 3, an external steel pipe 4, a protective net 5, transverse ribs 5-1, longitudinal ribs 5-2, a transverse steel pipe 6, an adjusting nut 7, a floor concrete layer 10 and a supporting frame 20.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1-5, the construction device for safety isolation and protection of elevator shaft provided in this embodiment includes a positioning plate 1 fixedly disposed on a floor slab concrete layer 10, a support frame 20 is assembled on the positioning plate 1, an inclination angle of 45 ° is formed between one end of the support frame 20 and the positioning plate 1, and the other end of the support frame 20 abuts against an inner wall of an elevator shaft; a square protective net 5 erected by steel bars is assembled on the support frame 20, and the square protective net 5 covers the top of the wellhead of the elevator shaft; in the embodiment, the adjustable inner screw rods 3 are matched with steel pipes of common specifications to form the supporting rods 2 with adjustable length, and the supporting rods are effectively attached to the floor slab concrete layer 10 to form the supporting frame 20 with a 45-degree angle, safety and reliability. The specific implementation steps are as follows: first, a steel pipe having an appropriate length is selected according to the width of the elevator shaft. Secondly, the adjustable screw rod is nested with the steel pipe, and the support is obliquely placed for 45 degrees after the nut on the adjustable screw rod is adjusted to a proper position according to the width of the elevator shaft. And finally, fine-adjusting the nut to ensure that the fixing piece with the thickness of 3mm at the end part of the adjustable screw rod is effectively attached to the floor concrete. After the oblique support is arranged, a longitudinal steel pipe fastener is installed to form a # -shaped framework, and finally the protective net 5 is fully paved.
Wherein, the protection network 5 adopts the reinforcing bar to set up and forms, and is with low costs, need not to reserve the installation hole during the installation on the elevartor shaft template, and is easy and simple to handle, and is fixed reliable, can effectively prevent the emergence of eminence falling accident and can not increase the risk of elevartor shaft seepage.
The elevator shaft safety isolation protection construction device is simple in structure, convenient and practical, the elevator shaft safety isolation protection construction device can improve the isolation protection construction efficiency of the elevator shaft of the floor at the construction site, and meanwhile, the economy, the safety and the reliability are considered; by adopting the finished adjustable screw, the construction is fast, the protection quality is easy to check, the labor cost (no professional scaffold is needed) and the material cost (the outer sleeve pipe uses a conventional steel pipe and does not need to be cut) can be reduced, and the safety and the reliability are improved.
Specifically, the positioning plate 1 comprises a connecting plate 1-1 and a mounting plate 1-2; the connecting plate 1-1 and the mounting plate 1-2 are mutually vertical, the connecting plate 1-1 and the mounting plate 1-2 are fixedly connected and integrally formed, and specifically, the connecting plate 1-1 and the mounting plate 1-2 are steel plates with the specification of 120mm multiplied by 150mm and the thickness of 3 mm; by adopting the scheme, the structural strength and the integral firmness of the positioning plate 1 are improved, and the use safety is further ensured.
The support frame 20 comprises a plurality of length-adjustable support rods 2 and transverse steel pipes 6, and the transverse steel pipes 6 are fastened with the support rods 2 through steel pipe buckles; the square protective net 5 is arranged on the transverse steel pipe 6 and the support rod 2; the supporting rods 2 are arranged at equal intervals, and the distance between every two adjacent supporting rods 2 is not more than 400 mm.
The support rod 2 comprises an adjusting nut 7, an inner screw rod 3 and an outer steel tube 4; the adjusting nut 7 is used for connecting the inner screw rod 3 and the outer steel tube 4; a clamping groove 2-1 is formed in the bottom of the adjusting nut 7, the outer steel pipe 4 is embedded in the clamping groove 2-1, an internal thread 2-2 is formed on the inner side wall of the adjusting nut 7 along the length direction, and the internal thread 2-2 and the internal screw rod 3 are matched and screwed with each other; the key of the embodiment is the design and manufacture of the inner screw rod 3; in order to meet the requirements of elevator shafts with different specifications to the maximum extent, the application range is wide.
The outer side of the adjusting nut 7 is provided with an adjusting handle 2-3 for rotating the adjusting nut 7; through setting up adjustment handle 2-3, can make things convenient for rotatory adjusting nut 7 for the length of adjustment bracing piece 2 makes things convenient for the assembly of elevator well safety isolation protection.
The support rod 2 adopts an inner screw rod 3 with the diameter of 36mm and an outer steel pipe 4 with the diameter of phi 48mm and the thickness of phi 3.5mm to be mutually nested, the length of the inner screw rod 3 is 600mm, and the length of the outer steel pipe 4 can be selected according to the actual width of a well. When 4 outer steel pipes are selected, in order to ensure safety, reduce the length of the movable end and increase the length of the nested section, the length of the movable end can be adjusted and controlled to be 200 mm.
The end part of the inner screw rod 3 is connected with a positioning plate 1, an outer steel pipe 4 with proper length is selected according to the width of a hoistway during installation, the inner screw rod 3 and the outer steel pipe 4 are nested, then a nut on the screw rod is adjusted to a proper position, the positioning plate 1 is arranged on a floor slab concrete layer 10, the support rod 2 is obliquely placed on the floor slab, and then the nut on the screw rod is finely adjusted, so that a positioning sheet is attached to the floor slab surface to be flat; after all the support frames 20 are installed, the steel pipe fastener frameworks are installed, and then the protective net 5 is fully paved. The method is suitable for horizontal isolation protection of elevator shafts, ventilation shafts and tail gas shafts.
The protection net 5 comprises transverse ribs 5-1 and longitudinal ribs 5-2 which are arranged in a transverse and longitudinal staggered manner, the erection is simple and convenient, the transverse ribs 5-1 and the longitudinal ribs 5-2 are connected in a transverse and longitudinal staggered manner to form the protection net 5 with square grids, certainly, the specific structure of the protection net 5 is not limited to the structure, the grids of the protection net 5 can be in other shapes such as rhombus and triangle, and the application is not limited to this.
The transverse bar 5-1 and the longitudinal bar 5-2 are welded and connected, the connection is firm and reliable, and the protective net 25 can be formed by binding steel wires at the intersection of the transverse bar 5-1 and the longitudinal bar 5-2.
In order to ensure the protection effect of the protection net 5, the transverse ribs 5-1 and the longitudinal ribs 5-2 of the protection net 25 provided by the invention preferably adopt reinforcing steel bars with the diameter of not less than 10mm, the distance between two adjacent transverse ribs 5-1 is not more than 150mm, and the distance between two adjacent longitudinal ribs 5-2 is not more than 150 mm.
A construction method of an elevator shaft safety isolation protection construction device comprises the following steps:
Step 4, sequentially installing all the support rods 2, connecting the end parts of the adjacent support rods 2 with transverse steel pipes 6, and connecting the support rods 2 with the transverse steel pipes 6 through steel pipe fasteners;
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the concrete floor comprises terms such as a positioning plate 1, a connecting plate 1-1, a mounting plate 1-2, a supporting rod 2, a clamping groove 2-1, internal threads 2-2, an adjusting handle 2-3, an internal screw rod 3, an external steel pipe 4, a protective net 5, transverse ribs 5-1, longitudinal ribs 5-2, a transverse steel pipe 6, an adjusting nut 7, a floor concrete layer 10 and a supporting frame 20, but the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides an elevator well safety isolation protection construction equipment which characterized in that: the elevator car floor structure comprises a positioning plate (1) fixedly arranged on a floor slab concrete layer (10), wherein a support frame (20) is assembled on the positioning plate (1), one end of the support frame (20) and the positioning plate (1) form an inclined angle of 45 degrees, and the other end of the support frame (20) is abutted against the inner wall of an elevator shaft; the supporting frame (20) is provided with a square protective net (5) which is erected by reinforcing steel bars, and the square protective net (5) covers the top of a well mouth of the elevator shaft.
2. The construction device for safety isolation and protection of the elevator shaft according to claim 1, wherein: the positioning plate (1) comprises a connecting plate (1-1) and a mounting plate (1-2); the connecting plate (1-1) and the mounting plate (1-2) are mutually vertical, and the connecting plate (1-1) and the mounting plate (1-2) are fixedly connected and integrally formed.
3. The construction device for safety isolation and protection of the elevator shaft according to claim 2, wherein: the specification of the connecting plate (1-1) and the mounting plate (1-2) is 120mm multiplied by 150mm, and the thickness is 3 mm.
4. The construction device for safety isolation and protection of the elevator shaft according to claim 1, wherein: the support frame (20) comprises a plurality of support rods (2) with adjustable lengths and transverse steel pipes (6), and the transverse steel pipes (6) are fastened with the support rods (2) through steel pipe buckles; the square protective net (5) is arranged on the transverse steel pipe (6) and the supporting rod (2).
5. The construction device for safety isolation and protection of the elevator shaft according to claim 4, wherein: the supporting rods (2) are arranged at equal intervals, and the distance between every two adjacent supporting rods (2) is not more than 400 mm.
6. The construction device for safety isolation and protection of the elevator shaft according to claim 5, wherein: the support rod (2) comprises an adjusting nut (7), an inner screw rod (3) and an outer steel pipe (4); the adjusting nut (7) is used for connecting the inner screw rod (3) and the outer steel pipe (4).
7. The construction device for safety isolation and protection of the elevator shaft according to claim 6, wherein: a clamping groove (2-1) is formed in the bottom of the adjusting nut (7), the outer steel pipe (4) is embedded in the clamping groove (2-1), an internal thread (2-2) is formed in the inner side wall of the adjusting nut (7) along the length direction, and the internal thread (2-2) and the internal screw (3) are matched and screwed mutually.
8. The construction device for safety isolation and protection of the elevator shaft according to claim 7, wherein: and an adjusting handle (2-3) for rotating the adjusting nut (7) is arranged on the outer side of the adjusting nut (7).
9. The construction device for safety isolation and protection of the elevator shaft according to claim 1, wherein: the protective net (5) comprises transverse ribs (5-1) and longitudinal ribs (5-2) which are arranged in a transverse and longitudinal staggered mode, and the transverse ribs (5-1) and the longitudinal ribs (5-2) are connected in a welded mode or in a binding mode through steel wires.
10. The construction method of the safety isolation and protection construction device for the elevator shaft according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
step 1, selecting a steel pipe with proper length according to the width of an elevator shaft;
step 2, assembling the supporting rod (2), nesting the inner screw rod (3) and the outer steel pipe (4) through an adjusting nut (7), adjusting the adjusting nut (7) on the inner screw rod (3) to a proper position according to the width of the elevator hoistway, and inclining the supporting rod (2) by 45 degrees and then placing the supporting rod aslant;
step 3, fine adjustment of an adjusting nut (7) is carried out, and effective fitting of a positioning plate (1) with the end part of the inner screw rod (3) being 3mm thick and a floor concrete layer is guaranteed;
step 4, sequentially installing all the support rods (2), connecting the end parts of the adjacent support rods (2) with the transverse steel pipes (6), and connecting the support rods (2) with the transverse steel pipes (6) through steel pipe fasteners;
step 5, mounting a protective net (5) on the support rods (2) and the transverse steel pipes (6) in the step 4; the protective net (5) is connected to the support rod (2) and the transverse steel pipe (6) through steel wire binding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927390.2A CN112412077A (en) | 2020-09-07 | 2020-09-07 | Elevator shaft safety isolation protection construction device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927390.2A CN112412077A (en) | 2020-09-07 | 2020-09-07 | Elevator shaft safety isolation protection construction device and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112412077A true CN112412077A (en) | 2021-02-26 |
Family
ID=74855035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010927390.2A Pending CN112412077A (en) | 2020-09-07 | 2020-09-07 | Elevator shaft safety isolation protection construction device and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112412077A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110154739A1 (en) * | 2009-12-30 | 2011-06-30 | Grun Andrea Luisa | Device with protection net and assembly procedure suitable as barrier for all kinds of openings |
| CN203238977U (en) * | 2013-05-16 | 2013-10-16 | 江苏省苏中建设集团股份有限公司 | Elevator shaft protective net |
| CN203905514U (en) * | 2014-01-10 | 2014-10-29 | 中建八局第四建设有限公司 | Guard assembly for elevator shafts |
| CN205025074U (en) * | 2015-08-12 | 2016-02-10 | 上海绿地建设(集团)有限公司 | Elevator well steel bracing promotes double -deck scaffold operation platform of formula |
| CN205713172U (en) * | 2016-04-06 | 2016-11-23 | 宝鸡建安集团股份有限公司 | A kind of novel hoistway horizontal protective device |
| CN107829567A (en) * | 2017-12-18 | 2018-03-23 | 广西建工集团联合建设有限公司 | A kind of safety protection device for elevator hoistway and its application method |
| CN211143813U (en) * | 2019-11-05 | 2020-07-31 | 上海宝冶集团有限公司 | Elevator shaft protection device |
-
2020
- 2020-09-07 CN CN202010927390.2A patent/CN112412077A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110154739A1 (en) * | 2009-12-30 | 2011-06-30 | Grun Andrea Luisa | Device with protection net and assembly procedure suitable as barrier for all kinds of openings |
| CN203238977U (en) * | 2013-05-16 | 2013-10-16 | 江苏省苏中建设集团股份有限公司 | Elevator shaft protective net |
| CN203905514U (en) * | 2014-01-10 | 2014-10-29 | 中建八局第四建设有限公司 | Guard assembly for elevator shafts |
| CN205025074U (en) * | 2015-08-12 | 2016-02-10 | 上海绿地建设(集团)有限公司 | Elevator well steel bracing promotes double -deck scaffold operation platform of formula |
| CN205713172U (en) * | 2016-04-06 | 2016-11-23 | 宝鸡建安集团股份有限公司 | A kind of novel hoistway horizontal protective device |
| CN107829567A (en) * | 2017-12-18 | 2018-03-23 | 广西建工集团联合建设有限公司 | A kind of safety protection device for elevator hoistway and its application method |
| CN211143813U (en) * | 2019-11-05 | 2020-07-31 | 上海宝冶集团有限公司 | Elevator shaft protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107100358B (en) | Cantilever bracket and bracket body special for unloading-free industrialized safety protection and construction method of cantilever bracket and bracket body | |
| CN206903022U (en) | A kind of steel bar truss floor support plate | |
| KR101312400B1 (en) | structure for safety working foothold having form fixing means | |
| CN104631650B (en) | Screen plate outer wall with heat insulation layer and construction method | |
| CN113323189A (en) | Assembled heat-preservation energy-saving shear wall based on channel steel connecting piece and implementation method | |
| CN112412077A (en) | Elevator shaft safety isolation protection construction device and construction method thereof | |
| CN110616735A (en) | Template system for retaining wall and construction method of retaining wall | |
| KR101941340B1 (en) | Support structure for slab foam panel | |
| JP2019112904A (en) | Building construction method | |
| CN205077886U (en) | Shaped steel protection canopy of encorbelmenting | |
| CN212866842U (en) | Frame structure type building scaffold | |
| CN209907886U (en) | Adjustable assembled stair construction platform | |
| CN212984626U (en) | Prefabricated assembled formwork system | |
| CN203603461U (en) | Floor aluminum shuttering splicing formwork structure system | |
| CN201826535U (en) | Connecting fastener | |
| CN111155775A (en) | Safety protection device for reserved hole and construction method thereof | |
| CN206888511U (en) | A kind of aluminum alloy formwork system for variable cross-section rectangular column | |
| CN111155793B (en) | Prefabricated steel bar processing shed capable of being installed quickly for building construction | |
| CN220848703U (en) | Connecting assembly and supporting structure for aluminum-wood combined template | |
| CN219196671U (en) | Modularized silo construction stair | |
| CN219219401U (en) | Temporary protection device for deformation joint in staggered floor construction of tower | |
| CN216893638U (en) | Template reinforcing apparatus | |
| CN220725814U (en) | Floor-free temporary support structure for floor support plate | |
| CN219910246U (en) | Adjustable detachable pole holding structure | |
| CN220377808U (en) | External triangular support frame fixing device of assembled building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210226 |