CN205224567U - Collapsible foldable elevartor shaft construction platform - Google Patents

Abstract

A retractable and foldable construction platform for an elevator shaft includes an operating platform and a folding platform. The main girder and the secondary girder are connected to form a frame structure, and steel nets are fixedly connected to it to form the operating platform. The two ends of the main beam are provided with suspension rings and inner sleeves, and the two sides of the main beam are symmetrically provided with a folding platform. The folding platform is connected with the main beam through a hinge, and the folding platform can be extended and folded. The utility model is a retractable and foldable elevator shaft construction platform, which effectively solves the personal safety problem of the personnel during the construction of the elevator shaft in the building construction project. Construction of elevator shafts of different sizes.

Description

A retractable and foldable elevator shaft construction platform

technical field

The utility model relates to a retractable and foldable elevator shaft construction platform, which relates to the field of elevator shaft construction in house construction engineering.

Background technique

In the elevator shaft construction technology of existing housing construction projects, the construction platform of the elevator shaft mainly adopts steel pipe scaffolding to set up a diagonally braced construction platform, or adopts section steel to be processed into an integrally shaped diagonally braced construction platform. Steel pipes are used to set up the diagonally braced construction platform. Since the safety of the stress system is completely determined by the steel pipe fasteners and the disturbance of the steel pipes, when the construction load is large or the construction load increases sharply, it is easy to cause loose cracks and damage of the fasteners and bending failure of the steel pipes. The construction is stable, and there are great potential safety hazards in the construction. And every time the construction platform is lifted, it is necessary to set up the oblique rod again and repeatedly connect and fix it with the pre-embedded connecting wall rod of the shear wall, which makes the construction more cumbersome. The profiled steel is used to process the overall qualitative inclined bracing construction platform. Due to the heavy weight of the profiled steel and the unbalanced weight of the triangular system itself, it is difficult to lift the whole upward and the operation is difficult. In addition, due to the overall finalization of the platform and the size constraints of the designed elevator shaft, One platform is only suitable for one size of elevator shaft construction.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides a retractable and foldable elevator shaft construction platform, which effectively solves the personal safety problem of the personnel during the construction of the elevator shaft in the building construction project, simplifies the lifting of the construction platform and the installation in place, and the same construction platform It is applicable to the construction of elevator shafts of different sizes. The platform is simple to manufacture, easy to operate, low in cost, high in safety performance, fast in construction speed and wide in application.

The technical scheme adopted in the utility model is:

A retractable and foldable construction platform for an elevator shaft includes an operating platform and a folding platform. The main girder and the secondary girder are connected to form a frame structure, and steel nets are fixedly connected to it to form the operating platform. Both ends of the main girder are provided with suspension rings and inner sleeves, and both sides of the main girder are symmetrically provided with folding platforms, which are connected to the main beam through hinges, and the folding platforms can be extended and folded.

Both ends of the main beam are provided with suspension rings, the main beam is provided with positioning steel pipes, and horizontal bolt holes are drilled at both ends of the main beam.

The inner sleeve is made of square steel pipe. The cross-sectional size of the inner sleeve is smaller than that of the main girder. The inner sleeve can be smoothly inserted into the main girder to expand and contract freely. The inner sleeve is drilled with a threaded hole. The threaded hole Corresponding to the horizontal bolt holes of the main beam, the inner casing is connected and fixed with the main beam through bolts.

The secondary beam is processed by channel steel, and the secondary beam is welded with the main beam to form a frame structure, and the welding form adopts full welding connection.

The folding platform is made of angle steel, covered with steel mesh, and the steel mesh and angle steel are welded and fixed.

The main girder is made of square steel pipes, and the length of the main girder is smaller than the width of the elevator shaft.

The utility model is a retractable and foldable elevator shaft construction platform, which effectively solves the personal safety problem of the personnel during the construction of the elevator shaft in the building construction project. Construction for elevator shafts of different sizes. The device has the advantages of simple manufacture, simple operation, low cost, high safety performance, fast construction speed and wide application range.

Description of drawings

Fig. 1 is a schematic diagram of the planar structure of the utility model.

Fig. 2 is a schematic diagram of the socket structure of the main girder of the present invention.

Fig. 3 is a schematic diagram of on-site installation of the utility model.

detailed description

As shown in FIGS. 1 to 3 , a retractable and foldable elevator shaft construction platform includes a main beam 1 , a secondary beam 2 , and a folding platform 4 . The main girder 1 and the secondary girder 2 are welded to form a frame structure, on which the expanded metal mesh 10 is welded to form an operating platform 3, and the two ends of the main girder 1 are provided with lifting rings 6 and inner sleeves 5, and the two sides of the main girder 1 are symmetrically provided with folding The platform 4 and the folding platform 4 are connected with the main beam 1 by hinges 8 . The folding platform 4 can be stretched and folded, and after being folded, it is beneficial to the overall hoisting and installation of the construction platform in the elevator shaft.

The main beam 1 is made of 200×200×2.5mm square steel pipe, the length of the main beam 1 is less than the width of the elevator shaft, the two ends of the main beam 1 are provided with lifting rings 6, the main beam 1 is provided with a positioning steel pipe 7, and the two sides of the main beam The end is drilled with horizontal bolt holes 9.

The inner sleeve 5 is made of 140×140×2.5mm square steel pipe. The cross-sectional size of the inner sleeve 5 is smaller than the cross-sectional size of the main beam 1. The inner sleeve 5 can be smoothly inserted into the main beam 1 and shrinks freely. The inner sleeve 5 One end is drilled with a threaded hole, and the threaded hole is set correspondingly to the drilled hole of the main beam 1, and is connected and fixed with the main beam 1 by bolts 11, and no less than two bolts 11 are used.

The secondary beam 2 is made of 8# channel steel, and is welded with the main beam 1 to form a frame, and the welding form adopts full welding connection.

The operating platform 3 is a frame formed by welding the main girder 1 and the secondary girder 2, on which the expanded metal mesh 10 is covered to form the operating platform 3, and the expanded metal mesh 10 is welded and fixed to the main girder 1 and the secondary girder 2.

The folding platform 4 is made of ∠50×50×3 mm angle steel, covered with steel mesh, and the steel mesh and angle steel are welded and fixed, and the folding platform 4 is fixed by welding the hinge 8 and the main beam 1.

Implementation steps:

1) Use steel wire ropes to fasten the rings 6 at both ends of the main beam 1 of the construction platform, and lift the construction platform as a whole into the elevator shaft through the hoisting device at the top of the elevator shaft.

2) Align the two ends of the main beam 1 with the reserved holes in the shear wall of the elevator shaft, the construction personnel install the inner casing 5 in place and extend it into the reserved holes in the shear wall, and manually move the construction platform slightly horizontally. Put the main beam 1 into the inner casing 5, and connect and fix them with bolts 11 through the bolt holes 9 preset on the main beam 1 and the inner casing 5. The distance between the outer end of the inner casing 5 and the end of the main beam 1 is 50cm, the inner casing 5 is inserted into the main beam 1 with a length of 25cm, lower the hook, bring the construction platform into contact with the floor, and use wooden wedges to tighten the gap between the inner casing 5 and the reserved hole in the shear wall.

3) After the construction platform is fixed, turn the folding platform 4 outwards and lay it flat, set up a steel pipe operation frame on the construction platform, insert the four vertical rods of the steel pipe operation frame into the positioning steel pipe 7 set above the main beam 1, and the operation frame The step distance shall not exceed 1.5m, and a working platform shall be set at the corresponding position of the operating frame for the use of upper reinforcement and formwork workers.

4) After the construction of the elevator shaft structure is completed, clean up the sundries on the operation platform 3, fasten the steel wire rope with the lifting ring 6 on the main beam 1 of the construction platform, fold the platform 4 on both sides, and remove the inner casing 5. Fix the wooden wedges and high-strength bolts 11, push the four inner sleeves 5 into the main beam 1 and lock the bolts 11 to prevent the inner sleeves from slipping outside the wall, and use the lifting device on the top of the elevator shaft to lift the construction platform upwards to the previous structure Layer construction position, repeat the installation steps.

Claims (6)

1. A retractable and foldable elevator shaft construction platform, including an operating platform (3) and a folding platform (4), characterized in that the main beam (1) and the secondary beam (2) are connected to form a frame structure, on which the An expanded metal mesh (10) is connected to form an operating platform (3); rings (6) and inner casings (5) are provided at both ends of the main beam (1), and folding platforms ( 4), the turning platform (4) is connected with the main beam (1) through the hinge (8), and the turning platform (4) can be stretched and folded. 2. A retractable and foldable elevator shaft construction platform according to claim 1, characterized in that suspension rings (6) are provided on both ends of the main beam (1), and positioning rings (6) are provided on the main beam (1). The steel pipe (7), the two ends of the main beam (1) are drilled with horizontal bolt holes (9). 3. A retractable and foldable elevator shaft construction platform according to claim 1, characterized in that the inner sleeve (5) is processed from a square steel pipe, and the cross-sectional size of the inner sleeve (5) is smaller than that of the main beam (1), the inner casing (5) can be smoothly inserted into the main beam (1) to expand and contract freely, and the inner casing (5) is drilled with threaded holes, and the threaded holes are connected with the horizontal bolts of the main beam (1) The holes (9) are arranged correspondingly, and the inner casing (5) is connected and fixed with the main beam (1) through bolts (11). 4. A retractable and foldable elevator shaft construction platform according to claim 1, characterized in that the secondary beam (2) is processed from channel steel, and the secondary beam (2) is welded to the main beam (1) Frame structure, welding form adopts full welding connection. 5. A retractable and foldable elevator shaft construction platform according to claim 1, characterized in that, the folding platform (4) is made of angle steel, covered with steel mesh, and the steel mesh is welded to the angle steel fixed. 6. A retractable and foldable elevator shaft construction platform according to claim 1, 2, 3 or 4, characterized in that the main beam (1) is made of square steel pipes, and the length of the main beam (1) is Less than the width of the elevator shaft.