CN113482329A - Elevator shaft platform creeping formwork combined system - Google Patents
Elevator shaft platform creeping formwork combined system Download PDFInfo
- Publication number
- CN113482329A CN113482329A CN202110795574.2A CN202110795574A CN113482329A CN 113482329 A CN113482329 A CN 113482329A CN 202110795574 A CN202110795574 A CN 202110795574A CN 113482329 A CN113482329 A CN 113482329A
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- elevator shaft
- steel
- formwork
- plate
- platform
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/082—Retractable forms for the inside face of at least three walls
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
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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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a climbing formwork combination system for an elevator shaft platform, which comprises an elevator shaft operating platform, wherein the elevator shaft operating platform comprises an elevator shaft truss supporting system, and the elevator shaft truss supporting system is anchored with a shear wall of a lower-layer main body structure through an elevator shaft platform attached climbing device and realizes vertical self-climbing of the elevator shaft platform; the elevator shaft truss support system is provided with a bottom operation platform plate, a middle operation platform plate and a top operation platform plate respectively, a steel template lifting device is arranged on the truss body system of the top operation platform plate, and steel template positioning and checking devices in three directions are arranged on the bottom operation platform plate and the middle operation platform plate respectively. By optimizing the design of a truss support system of the elevator shaft operating platform, the difficult problem of positioning and correcting the inner steel template is solved, and the problem of adaptability of the assembled steel template to the construction of the variable cross-section core tube is solved by optimizing the inner steel template system of the elevator shaft.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a climbing formwork combination system for a shaft platform of a super high-rise elevator.
Background
At present, in the construction process of a super high-rise frame-core tube concrete structure system, because the inner side and the outer side of a core tube must be constructed synchronously, the construction of an elevator shaft in the core tube is difficult, the safety is difficult to guarantee in the traditional construction mode, and the synchronous construction speed of structural floors is greatly delayed. Therefore, the problem of synchronous construction of concrete structures inside and outside the super high-rise core tube is solved from the aspect of safety and technical feasibility.
Disclosure of Invention
Aiming at the current construction situation, the invention provides a climbing formwork combination system for an elevator shaft platform, which solves the problems of safety and progress of synchronous construction of concrete structures inside and outside a core barrel and solves the technical problems of positioning, checking and the like of steel formwork construction.
In order to realize the application purpose, the invention adopts the following technical scheme: an elevator shaft platform climbing formwork combination system comprises an elevator shaft operating platform, wherein the elevator shaft operating platform comprises an elevator shaft truss support system, and the elevator shaft truss support system is anchored with a shear wall of a lower-layer main body structure through an elevator shaft platform attached climbing device and realizes vertical self-climbing of the elevator shaft platform; the elevator shaft truss support system is provided with a bottom operation platform plate, a middle operation platform plate and a top operation platform plate respectively, a steel template lifting device is arranged on the truss body system of the top operation platform plate, and steel template positioning and checking devices in three directions are arranged on the bottom operation platform plate and the middle operation platform plate respectively.
In the foregoing scheme, still include the inboard steel form system of elevator shaft, the inboard steel form system of elevator shaft includes that the steel form is wholly assembled to the inboard steel form of elevator shaft and adheres to the steel form telescoping device on the whole steel form of assembling, wholly assemble the steel form and include standard plate steel form and corner dysmorphism plate steel form, the steel form telescoping device includes strip plate and detachable hinge, all through detachable hinged joint between strip plate and the corner dysmorphism plate steel form and the strip plate each other.
In the scheme, the steel template lifting device comprises a sliding module, a star-shaped anti-falling device, a steel wire rope and an electric hoist four-corner oil tanker which is fixed on a vertical supporting truss and used for drawing the steel wire rope,
the star-shaped anti-falling device is provided with a wheel shaft connected with the sliding module through a bolt, and the sliding module is arranged on the top operating platform plate horizontal supporting truss in a sliding mode and used for moving back and forth on the top operating platform plate horizontal supporting truss through a side hydraulic roller.
In the scheme, the steel formwork positioning and checking device comprises a retraction system and a section steel beam supporting system, the section steel beam supporting system is connected with the elevator shaft truss supporting system, and the retraction system takes the section steel beam supporting system as a counter-force supporting point.
Furthermore, the retraction system comprises an operating handle, a screwing-in fixing device and a telescopic screw rod, wherein the operating handle is a hollow thin-wall steel pipe with a rotary operating handle, the inner side of the end part of the thin-wall steel pipe is provided with spiral threads and is connected with the telescopic screw rod, the inner side of the screwing-in fixing device is provided with threads, the outer side of the screwing-in fixing device is provided with a stop lever, and the screwing-in fixing device is fixed on a section steel beam supporting system on the bottom of the elevator shaft and on the middle operating platform plate through the outer stop lever.
Furthermore, the section steel beam supporting system comprises a rectangular steel beam and a steel plate with a U-shaped groove, the rectangular steel beam is connected with the elevator shaft truss supporting system in a welding mode, and the U-shaped groove steel plate is welded on the rectangular steel beam.
Furthermore, the telescopic screw comprises a threaded screw, a bayonet connected with the steel formwork vertical edge and a connecting bolt.
By the aid of the method, the technical problems of assembling, positioning, correcting, die assembling, reinforcing, die withdrawing, integral lifting and the like of construction of the steel template on the inner side of the elevator shaft are solved. Compared with the prior art, the invention has at least the following beneficial effects:
1. the elevator shaft protection platform and the steel template are combined to form a whole climbing template system, and construction safety, quality and progress are considered.
2. Through innovating the improvement to the inboard steel form of pit shaft, can adapt to the variable cross section construction of elevator pit shaft shear force wall under the condition of not disassembling the template, greatly promoted the efficiency of construction.
3. The steel form positioning and checking device is arranged at the steel form hoisting point supporting truss and the middle operating platform form, so that the thick and heavy steel forms can be easily, simply and accurately matched and released, and the construction is convenient.
4. The steel formwork positioning and checking device is arranged at the middle operating platform formwork, so that the verticality adjustment and checking of the integral steel formwork can be realized, the checking efficiency of the steel formwork is improved, and the construction quality is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of the overall model structure of the present invention;
FIG. 2 is a top plan view of FIG. 1 of the present invention;
fig. 3 is a plan view of the assembly of the steel form system inside the elevator shaft of the present invention;
fig. 4 is a schematic view of the telescopic device node of the steel template system on the inner side of the elevator shaft;
fig. 5 is a floor plan of an elevator shaft operating platform of the present invention;
FIG. 6 is a cross-sectional view of the steel form lifting apparatus of the present invention;
FIG. 7 is a schematic perspective view of the steel form lifting apparatus of the present invention;
FIG. 8 is a schematic view of a steel form positioning and checking apparatus according to the present invention
FIG. 9 is a schematic view of the retraction system of the present invention;
figure 10 is a schematic structural view of the steel beam support system of the present invention.
Reference numerals：
1. An elevator shaft truss support system;
2. a wooden template outside the elevator shaft;
3. a steel formwork system inside the elevator shaft; 3-1, standard plate steel templates; 3-2, corner special-shaped plate steel templates;
4. a steel form expansion device; 4-1, connecting bolts with the steel templates; 4-2, vertically corrugating a steel template; 4-3, strip-shaped plates; 4-4, a detachable hinge; 4-5, rotating track;
5. operating the platform plate; 5-1, operating a platform plate at the top; 5-2, an intermediate operating platform plate; 5-3, a bottom operation platform plate;
6. a steel template positioning and checking device; 6-1, a retraction system; 6-2, a section steel beam supporting system; 6-3, operating a handle; 6-4, screwing in a fixing device; 6-5, a telescopic screw rod; 6-6, rectangular steel beams; 6-7, steel plate with U-shaped groove;
7. a steel form lifting device; 7-1, a sliding module; 7-2, steel wire ropes; 7-3 star-shaped anti-falling devices; 7-4 hydraulic rollers;
8. a lower-layer main body structure shear wall;
9. the elevator shaft platform is attached to a climbing device.
Detailed Description
The present invention will be described in further detail with reference to embodiments for facilitating understanding and implementation of the present invention by those of ordinary skill in the art, and it should be understood that the embodiments described herein are merely illustrative and explanatory of the present invention and are not restrictive thereof.
Fig. 1 is a schematic structural diagram showing an elevator shaft platform creeping formwork combined system formed by combining a steel platform and a large-area steel formwork for ultra-high elevator shaft construction, and fig. 2 is a top view of fig. 1.
As shown in fig. 1 and 2, an elevator shaft platform creeping formwork combination system comprises an elevator shaft operating platform, an elevator shaft inside steel formwork system 3 and an elevator shaft outside wood formwork 2, wherein:
the elevator shaft operating platform comprises an elevator shaft truss support system 1, an operating platform plate 5 and an elevator shaft platform attached climbing device 9, wherein the elevator shaft platform attached climbing device 9 consists of a wall attaching part and a guide rail, and the principle of the elevator shaft platform attached climbing device is the same as that of a traditional self-climbing system. In the construction process, the elevator shaft truss support system 1 is anchored with the shear wall 8 of the lower-layer main structure through the climbing device 9 attached to the elevator shaft platform, and vertical self-climbing of the elevator shaft operation platform is realized; a bottom operation platform plate 5-3, a middle operation platform plate 5-2 and a top operation platform plate 5-1 are respectively arranged on an elevator shaft truss support system 1, and a steel template lifting device 7 is arranged on a truss body system of the top operation platform plate 5-1; the steel template positioning and checking devices 6 in three directions are respectively arranged on the bottom operating platform plate 5-3 and the middle operating platform plate 5-2, so that the functions of self-climbing of the elevator shaft operating platform, synchronous lifting of the steel template system 3 on the inner side of the elevator shaft, positioning and checking, mold closing and mold releasing and the like are realized.
As shown in fig. 1 and 2, a template system of the shear wall of the elevator shaft is formed by an outer side wood template 2 of the elevator shaft and an inner side steel template system 3 of the elevator shaft. In the construction process, the outer side wood formwork 2 of the elevator shaft is fixedly connected with the inner side steel formwork system 3 through the pull rod, and an inner side formwork system and an outer side formwork system of the elevator shaft shear wall are formed.
As shown in fig. 3, the steel formwork system 3 on the inner side of the elevator shaft consists of an integrally assembled steel formwork on the inner side of the elevator shaft and a steel formwork expansion device 4 attached to the integrally assembled steel formwork; the integral assembled steel template consists of a standard plate steel template 3-1 with the size of 4200 multiplied by 2000 multiplied by 40 and a corner special-shaped plate steel template 3-2, the steel template expansion device 4 consists of a strip plate 4-3 with the size of 4200 multiplied by 50 multiplied by 40 and a detachable hinge 4-4, and the strip plate 4-3 and the corner special-shaped plate steel template 3-2 and the strip plates 4-3 are connected with each other through the detachable hinge 4-4; the steel template system 3 on the inner side of the elevator shaft realizes the transverse dimension change of the integrally assembled steel template through a steel template expansion device 4 attached to the joint of the corner special-shaped plate steel template 3-2 and the standard plate steel template 3-1 so as to adapt to different section dimension changes of the elevator shaft of the super high-rise; the steel formwork system 3 on the inner side of the elevator shaft is suspended on a supporting truss of the top operating platform plate 5-1 through a steel formwork lifting device 7, and the steel formwork lifting device 7 is composed of a sliding module 7-1, a star-shaped anti-falling device 7-3, a steel wire rope 7-2 and an electric hoist four-corner oil tanker. The synchronous lifting of the steel formwork system 3 inside the elevator shaft system and the vertical truss system 1 of the elevator shaft is realized through the steel formwork lifting device 7; the steel template positioning and checking device 6 arranged on the horizontal supporting truss on the bottom operation platform plate 5-3 and the middle operation platform plate 5-2 is used for realizing the assistance of die assembly, positioning, verticality checking and die stripping of the inner steel template in the elevator shaft by the steel template positioning and checking system 3.
As shown in fig. 4, in the construction process, under the working condition that the size of the cross section of the inner steel template needs to be adjusted, the steel template connecting bolt 4-1 between the standard plate steel template 3-1 and the corner special-shaped plate steel template 3-2 and positioned on the steel template vertical edge 4-2 is loosened, the strip-shaped plate 4-3 attached to the corner special-shaped plate steel template 3-2 through the detachable hinge 4-4 is assembled or removed between the standard plate steel template 3-1 and the corner special-shaped plate steel template 3-2 according to the rotating track 4-5, and the cross section of the inner steel template is increased or reduced by a modulus of 50mm so as to adapt to the change of the cross section size of the super high-rise elevator shaft. Meanwhile, the strip plates 4-3 are attached and connected with each other and the strip plates 4-3 and the corner special-shaped plate steel templates 3-2 through the detachable hinges 4-4, and the strip plates 4-3 can be increased or decreased or removed according to actual construction conditions, so that construction is facilitated.
As shown in fig. 5, in the construction process, the steel formwork system 3 on the inner side of the elevator shaft is suspended on the supporting truss of the top operating platform plate 5-1 through the steel formwork lifting device 7, so that the steel formwork system 3 on the inner side of the elevator shaft is synchronously lifted vertically along with the supporting truss system 1 of the elevator shaft truss and moves forwards and backwards and leftwards in the horizontal direction; the steel formwork positioning and checking device 6 in three directions is respectively arranged on an operation platform plate 5-3 at the bottom of the elevator shaft and a middle operation platform plate 5-2, the end part of the steel formwork positioning and checking device 6 is fixed with a steel formwork vertical ridge 4-2 by bolts, the section steel beam supporting system 6-2 at the operation platform plate at the bottom and the middle part is taken as a counter-force supporting point, and the functions of mold closing, positioning, verticality adjustment and checking, auxiliary mold releasing and the like of the steel formwork system 3 in the inner side of the elevator shaft are realized through the screwing-in and screwing-out of the indentation system 6-1.
As shown in fig. 6 and 7, the steel formwork lifting device 7 consists of a sliding module 7-1, a star-shaped anti-falling device 7-3, a steel wire rope 7-2 and an electric hoist four-corner oil tanker which is fixed on a vertical supporting truss and pulls the steel wire rope 7-2, wherein the sliding module 7-1 realizes the back and forth movement on the horizontal supporting truss of the top operating platform plate 5-1 through a side hydraulic roller 7-4, so that the back and forth movement of the steel formwork suspended on the sliding module 7-1 is realized; one end of a steel wire rope 7-2 is connected with the inner steel template system 3, the other end of the steel wire rope is connected with an electric hoist four-corner oil tanker fixed on the vertical supporting truss, and the steel template is pulled to move up and down through the electric hoist to pull the steel wire rope 7-2; the axle of the star-shaped anti-falling device 7-3 is connected with the sliding module 7-1 through a bolt, the star-shaped anti-falling device 7-3 utilizes the gear and rack meshing principle, when the steel form which is dragged and suspended by the electric hoist is normally lifted or descended, the rotation of the axle drives the star wheel to rotate positively and negatively to drag the anti-falling stop block to go in and out, when the steel form falls rapidly, the falling speed is higher than the falling stop block resetting speed, so that the axle is blocked to rotate, and the steel form is prevented.
As shown in fig. 8, the steel form positioning and checking device 6 comprises a retraction system 6-1 and a section steel beam support system 6-2, the section steel beam support system 6-2 is connected with the elevator shaft truss support system 1, and the retraction system 6-1 takes the section steel beam support system 6-2 as a counter force support point.
As shown in figure 9, the retraction system 6-1 of the steel form positioning and checking device 6 comprises an operating handle 6-3, a screwing fixing device 6-4 and a telescopic screw 6-5, wherein in the construction process, the operating handle 6-3 is a hollow thin-wall steel pipe with a rotary operating handle, and the inner side of the end part of the thin-wall steel pipe is provided with a spiral thread which is connected with the telescopic screw 6-5. The inner side of the precession fixing device 6-4 is provided with threads, the outer side of the precession fixing device is provided with a stop lever, the precession fixing device is fixed on the bottom of an elevator shaft and a section steel beam supporting system 6-2 on a middle operating platform plate through the outer side stop lever, and the front and back fine adjustment of the telescopic screw 6-5 is realized through the threads arranged on the inner side. The telescopic screw 6-5 consists of a threaded screw, a bayonet connected with the steel formwork vertical edge and a connecting bolt. In the construction process, when the precession fixing device 6-4 is not fixed with the section steel beam supporting system 6-2 on the operation platform plate 5, the large-amplitude forward and backward movement can be realized; when the screwing fixing device 6-5 is fixed with the section steel beam supporting system 6-2 on the operating platform plate 5, the operating handle 6-3 is rotated, so that the telescopic screw 6-5 and the inner side of the screwing fixing device 6-4 are provided with threads to interact, and small-amplitude forward and backward movement is realized.
As shown in figure 10, a section steel beam supporting system 6-2 is arranged at a position, which is 5-3 away from a bottom operation platform plate and 5-2 of an intermediate operation platform plate, of an elevator shaft truss supporting system 1 and is 500mm high, the section steel beam supporting system 6-2 is composed of a rectangular steel beam 6-6 and a steel plate 6-7 with a U-shaped groove, the rectangular steel beam 6-6 is connected with the truss supporting system in a welding mode, and the U-shaped groove steel plate 6-7 is welded on the rectangular steel beam 6-6. In the construction process, when the positioning and verticality of the steel formwork system 3 on the inner side of the elevator shaft need to be finely adjusted in a small range, the stop rod of the screwing-in fixing device 6-4 in the figure 9 is buckled into the steel plate 6-7 with the U-shaped groove, so that the rectangular steel beam 6-6 serves as a reverse supporting beam of the retraction system 6-1, and the small-range forward and backward movement of the steel formwork on the inner side is realized.
The climbing formwork combination system of the elevator shaft platform is mainly suitable for the construction of the super high-rise elevator shaft with the inside and the outside of a core cylinder constructed synchronously, and the technical problem that the inside steel formwork system is lifted synchronously along with the elevator shaft protection platform is solved by arranging steel formwork lifting points on the climbing elevator shaft platform; the steel formwork plate splicing nodes are provided with a plurality of strip plates which can be rotatably spliced and disassembled, so that the size of an inner side steel formwork system is changed to adapt to the technical problem of section size change of the same elevator shaft in the construction process; the technical problems of positioning, checking, die assembly and die withdrawal of an inner steel template system are solved by arranging the positioning and checking device at the bottom construction platform and the middle construction platform of the elevator shaft protection platform.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, the invention is not to be limited to the details of the examples, which are set forth in the following claims.
Claims (7)
1. The climbing formwork combination system for the elevator shaft platform is characterized by comprising the elevator shaft operating platform, wherein the elevator shaft operating platform comprises an elevator shaft truss supporting system, and the elevator shaft truss supporting system is anchored with a shear wall of a lower-layer main body structure through an attached climbing device of the elevator shaft platform and realizes vertical self-climbing of the elevator shaft platform; the elevator shaft truss support system is provided with a bottom operation platform plate, a middle operation platform plate and a top operation platform plate respectively, a steel template lifting device is arranged on the truss body system of the top operation platform plate, and steel template positioning and checking devices in three directions are arranged on the bottom operation platform plate and the middle operation platform plate respectively.
2. The elevator shaft platform creeping formwork combination system defined in claim 1, further comprising an elevator shaft inside steel formwork system, wherein the elevator shaft inside steel formwork system comprises an elevator shaft inside integral assembled steel formwork and a steel formwork telescoping device attached to the integral assembled steel formwork, the integral assembled steel formwork comprises a standard plate steel formwork and a corner special-shaped plate steel formwork, the steel formwork telescoping device comprises a strip plate and a detachable hinge, and the strip plate and the corner special-shaped plate steel formwork and the strip plate are connected through the detachable hinge.
3. The elevator shaft platform creeping formwork combination as claimed in claim 1, wherein the steel form hoisting device comprises a sliding module, a star-shaped fall arrest device, a wire rope and an electric block quad tanker fixed on the vertical support truss pulling the wire rope,
the star-shaped anti-falling device is provided with a wheel shaft connected with the sliding module through a bolt, and the sliding module is arranged on the top operating platform plate horizontal supporting truss in a sliding mode and used for moving back and forth on the top operating platform plate horizontal supporting truss through a side hydraulic roller.
4. The elevator shaft landing and creeping formwork combination system according to claim 1, wherein the steel form positioning and checking device comprises a retraction system and a section steel beam support system, the section steel beam support system is connected with the elevator shaft truss support system, and the retraction system takes the section steel beam support system as a counter force support point.
5. The elevator shaft platform creeping formwork combination system of claim 4, wherein the retracting system comprises an operating handle, a screwing fixing device and a telescopic screw, the operating handle is a hollow thin-wall steel pipe with a rotary operating handle, the end part of the thin-wall steel pipe is provided with a spiral thread at the inner side and is connected with the telescopic screw, the screwing fixing device is provided with a thread at the inner side, and a stop lever at the outer side is fixed on the section steel beam supporting system at the bottom of the elevator shaft and on the middle operating platform plate through the stop lever at the outer side.
6. The elevator shaft landing creeping formwork assembly of claim 5, wherein the steel section beam support system comprises a rectangular steel beam welded to the elevator shaft truss support system and a steel plate with U-grooves welded to the rectangular steel beam.
7. The elevator shaft landing creeping formwork assembly of claim 5, wherein the telescopic screws comprise threaded screws, bayonets attached to the steel form vertical edges, and attachment bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795574.2A CN113482329B (en) | 2021-07-14 | 2021-07-14 | Elevator shaft platform creeping formwork combined system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795574.2A CN113482329B (en) | 2021-07-14 | 2021-07-14 | Elevator shaft platform creeping formwork combined system |
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| CN113482329A true CN113482329A (en) | 2021-10-08 |
| CN113482329B CN113482329B (en) | 2022-09-27 |
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| CN113482329B (en) | 2022-09-27 |
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