Tool type scaffold for hoisting prefabricated stairs

Abstract

The tool type scaffold comprises a scaffold body, the scaffold body comprises a vertical rod steel pipe, a transverse steel pipe and a longitudinal steel pipe, the transverse steel pipe and the longitudinal steel pipe are connected with the vertical rod steel pipe and intersect with each other, and a connecting device used for being connected with a building body is arranged at the bottom of the scaffold body. A detachably connected locking device is arranged between the frame body and the connecting device, and the frame body is integrally disassembled or assembled when the locking device is unlocked. The structure can be processed, assembled and integrally hoisted according to the sizes of different staircases, can be repeatedly used, avoids repeated erection of scaffolds, and can effectively accelerate the construction progress, reduce the cost and save the labor cost.

Description

Technical Field

[0002] The utility model relates to the technical field of prefabricated building construction, in particular to a tool-type scaffold for hoisting precast stairs.

Background Art

[0004] As a tool convenient for construction workers, the tool-type scaffold is widely used in the construction industry, especially in prefabricated buildings. In the existing technology, an operation platform scaffold is erected on the precast stair section in the stairwell to meet the construction requirements of the upper structure and the safety protection requirements for stair holes and edges. After the construction of the upper structure is completed, the scaffold is removed and the precast stairs of this floor are hoisted. However, the existing tool-type scaffold has the following problems: the scaffold is repeatedly erected and disassembled on each floor, resulting in low construction efficiency and high labor costs. Improvements are urgently needed.

Content of the Utility Model

[0006] In order to solve the technical problems of repeated erection and disassembly of the existing tool-type scaffold, low construction efficiency and high labor costs, the utility model provides a tool-type scaffold for hoisting precast stairs.

[0007] The utility model is realized by the following technical solutions:

[0008] A tool-type scaffold for hoisting precast stairs includes a scaffold body. The scaffold body includes vertical pole steel pipes, and transverse steel pipes and longitudinal steel pipes that are respectively connected to the vertical pole steel pipes and cross each other. A connecting device for connecting with the main body of the building is provided at the bottom of the scaffold body. A detachable locking device is provided between the scaffold body and the connecting device. When the locking device is unlocked, the connecting device and the scaffold body can be integrally disassembled or installed. The prefabricated scaffold and the connecting device can be directly hoisted as a whole to the floor to be constructed after the construction is completed and directly connected to the main body of the building as a whole, avoiding repeated erection of the scaffold, effectively improving the construction efficiency and reducing the construction cost.

[0009] For a tool-type scaffold for hoisting precast stairs as described above, the transverse steel pipe is connected to the vertical pole steel pipe by means of a fastener connection.

[0010] For a tool-type scaffold for hoisting precast stairs as described above, the longitudinal steel pipe is connected to the vertical pole steel pipe by means of a fastener connection.

[0011] For a tool-type scaffold for hoisting precast stairs as described above, corner lifting points for hoisting the scaffold body are provided at the bottom of the scaffold body. The corner lifting points include a first corner lifting point, a second corner lifting point, a third corner lifting point and a fourth corner lifting point located at the four top corners of the bottom of the scaffold body. A first steel pipe for ensuring the stability of the scaffold body during hoisting is connected between the first corner lifting point and the third corner lifting point, and a second steel pipe for ensuring the stability of the scaffold body during hoisting is connected between the second corner lifting point and the fourth corner lifting point.

[0012] As described above, a tool-type scaffold for hoisting a prefabricated staircase is provided with obliquely crossed vertical steel pipes from the bottom to the top of the frame.

[0013] In the tool-type scaffolding for hoisting prefabricated stairs as described above, the connecting device includes threaded steel bars for fitting onto the vertical pole steel pipes and an I-beam assembly connected to the main body of the building, and the threaded steel bars are welded to the top flange plate of the I-beam assembly of the connecting device.

[0014] In the tool-type scaffolding for hoisting prefabricated stairs as described above, the I-beam assembly is provided with double steel pipes locked and connected with a locking device.

[0015] In the tool-type scaffolding for hoisting prefabricated stairs as described above, the locking device includes a screw rod steel bar welded to the I-beam beam assembly and a locking fastener for locking connection with the double steel pipes.

[0016] In the tool-type scaffolding for hoisting prefabricated stairs as described above, the threaded steel bars are provided with force nuts and anti-loosening nuts for fastening the locking fasteners.

[0017] As described above, in a tool-type scaffolding for hoisting prefabricated stairs, the locking fastener is provided with a first curved surface and a second curved surface for compressing and locking the double steel pipes, and the first curved surface and the second curved surface are connected by a metal connector.

[0018] Compared with the prior art, the tool-type scaffolding for prefabricated staircase hoisting proposed by the utility model has the following beneficial effects:

[0019] 1. The frame structure adopts an integral lifting design. The frame can be processed, assembled and hoisted as a whole according to the size of different stairwells. This structural design can be prefabricated according to different prefabricated building sections. During the installation and disassembly process, there is no need to repeatedly build and dismantle scaffolding. It only needs to be hoisted as a whole, avoiding repeated scaffolding. It can effectively speed up the construction progress and reduce costs and save labor costs.

[0020] 2. The connecting device includes threaded steel bars for fitting vertical pole steel pipes and an I-beam assembly connected to the main body of the building. The I-beam assembly can be prefabricated according to different prefabricated building sections. The bottom of the I-beam assembly can be fixed to the structural beam plate by expansion bolts or embedded anchor bolts, providing support and stability for the frame.

[0021] 3. The locking device includes a screw rod steel bar welded to the I-beam steel component and a locking fastener used for locking and connecting with the double steel pipes. The locking fastener is provided with a first arc surface and a second arc surface for pressing and locking the double steel pipes. By locking the double steel pipes on the I-beam steel component, while ensuring the integrity of the I-beam steel component, the firmness and reliability of the overall structure are also improved.

Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments.

[0024] Figure 1 Schematic diagram of the bottom structure of the tool-type scaffolding of the present invention;

[0025] Figure 2 Schematic diagram of the erection of the tool-type scaffolding of the present invention;

[0026] Figure 3 Application scenario diagram of the tool-type scaffolding of the present invention;

[0027] Figure 4 Large-scale drawing of the end of the I-beam steel component of the present invention;

[0028] Figure 5 Enlarged schematic diagram of area A of the I-beam steel component of the present invention;

[0029] Figure 6 Plan view of the bottom of the framework of the present invention.

Detailed Embodiments

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the following will further elaborate on the present invention in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Specific embodiments are as Figures 1 to 6As shown, the technical solution of the utility model is further explained, a tool-type scaffold for prefabricated staircase hoisting, including a prefabricated frame 1, a connection device 27 for connecting to the main body of the building is provided at the bottom 16 of the frame 1, and a detachably connected locking device 20 is provided between the frame 1 and the connection device 27, the frame 1 includes a vertical pole steel pipe 5 and a transverse steel pipe 4 and a longitudinal steel pipe 3 respectively connected to the vertical pole steel pipe 5 and intersecting each other, the bottom 16 of the frame 1 is connected to the main body of the building through the connection device 27, the frame 1 and the connection device 27 can be prefabricated according to the erection size of different prefabricated building sections and related calculation books, and a detachably connected locking device 20 is provided between the frame 1 and the connection device 27. After the construction is completed, the prefabricated scaffold can be directly hoisted as a whole to the proposed construction floor and directly connected to the main body of the building as a whole, avoiding repeated erection of scaffolding, effectively improving construction efficiency, and reducing construction costs.

[0033] Furthermore, as a preferred implementation mode of the present invention but not a limitation, the frame 1 is constructed by steel pipes having a size of φ48.3×3.6 mm. The spacing between the transverse steel pipes 4 and the longitudinal steel pipes 3 of the frame 1 needs to be determined based on the erection dimensions of 15 prefabricated stairs and related calculations. The erection height of the frame 1 should be at least 1200 mm higher than the upper structural surface.

[0034] In this embodiment, the frame structure adopts an integral lifting design. The frame is made of horizontal steel pipes and longitudinal steel pipes connected to the vertical steel pipes by fasteners. The frame is processed and assembled according to the sizes of different stairwells, and hoisted as a whole. The vertical steel pipes at the bottom of the frame are sleeved on the connection device welded with threaded steel bars. This structural design can be prefabricated according to different prefabricated building sections. During the installation and disassembly process, there is no need to repeatedly build and dismantle the scaffolding. It only needs to be hoisted as a whole, thereby reducing the time for repeated construction and dismantling of the scaffolding.

[0035] Further, as a preferred embodiment of the present solution but not a limitation, the bottom 16 of the frame 1 is provided with corner hanging points 30 for hanging the frame 1, and the corner hanging points 30 are located at the four top corners of the bottom 16 of the frame 1, namely the first corner hanging point 31, the second corner hanging point 32, the third corner hanging point 33 and the fourth corner hanging point 34. A first steel pipe 35 is connected between the first corner hanging point 31 and the third corner hanging point 33 to ensure the stability of the frame 1 during hanging, and a second steel pipe 36 is connected between the second corner hanging point 32 and the fourth corner hanging point 34 to ensure the stability of the frame 1 during hanging, and the first steel pipe 35 and the second steel pipe 36 cross to form a horizontal scissors shape. The frame 1 is also provided with obliquely crossed vertical steel pipes 37 from the bottom 16 to the top 17.

[0036] In this embodiment, corner lifting points for lifting the frame are provided at the four top corners of the bottom of the frame. A first steel pipe and a second steel pipe are connected between the diagonal corners of the corner lifting points. The first steel pipe and the second steel pipe cross to form a horizontal scissors shape, and this structure can prevent the frame from deforming during lifting or transfer, ensuring the integrity and stability of the frame.

[0037] Further, as a preferred implementation manner rather than a limitation of this solution, the connecting device 27 includes a threaded steel bar 271 for sleeving the vertical steel pipe 5 and an I-shaped steel beam assembly 272 connected to the main body of the building. The length of the threaded steel bar 271 is 200 mm. The model of the threaded steel bar 271 is matched with the model of the vertical steel pipe 5 at the bottom 16 of the frame 1. The threaded steel bar 271 is welded on the top flange 9 of the I-shaped steel beam assembly 272. The I-shaped steel beam assembly 272 is provided with a double steel pipe 2 tightly connected to the locking device 20. The I-shaped steel beam assembly 272 can also adopt a channel steel beam or a square steel beam.

[0038] In this embodiment, the specifications and quantities of the I-shaped steel beam assemblies need to be determined according to the erection dimensions between precast floor segments and relevant calculation sheets. The bottom of the I-shaped steel beam assembly can adopt the expansion bolt method or the embedded anchor bolt method to fix its bottom on the structural beam slab. This structure can be precast according to different precast floor segments, providing support and stability for the frame.

[0039] Further, as a preferred implementation manner rather than a limitation of this solution, the locking device 20 includes a screw steel bar 201 welded on the top flange 9 of the I-shaped steel beam assembly 272 and a locking fastener 202 for tightly connecting with the double steel pipe 2. A stress nut 10 and a locknut 11 for fastening the locking fastener 202 are provided on the screw steel bar 201. The locking fastener 202 is provided with a first arc surface 13 and a second arc surface 14 for pressing and locking the double steel pipe 2. The first arc surface 13 and the second arc surface 14 are connected by a metal connecting piece 12.

[0040] In this embodiment, the locking device is provided with a locking fastener for locking the double steel pipe, which not only ensures the integrity of the I-shaped steel beam assembly but also improves the firmness and reliability of the overall structure.

[0041] The working principle of this embodiment is as follows:

[0042] A tool - type scaffold for hoisting precast stairs proposed by the present utility model. The precast frame body 1 is made by connecting transverse steel pipes 4 and longitudinal steel pipes 3 to the vertical pole steel pipes respectively through fasteners. The frame body 1 and the connecting device 27 can be precast according to different precast floor sections 15. The bottom of the connecting device 27 can be fixed on the structural beam - slab by expansion bolt method or other methods, providing support and stability for the overall structure. The vertical pole steel pipe 5 at the bottom 16 of the frame body 1 is sleeved on the connecting device 27 welded with threaded steel bars 271, and the double steel pipes 2 of the I - shaped steel beam assembly 272 are tightly locked and connected with the locking fasteners 202 of the locking device 20, ensuring the integrity and firmness of the connecting device 27.

[0043] After the construction of the upper - layer structural beam - slab is completed, separate the frame body 1 structure from the connecting device 27, and unlock the locking fasteners 202 that tightly connect the double steel pipes 2 on the I - shaped steel beam assembly 272 with the locking device 20, realizing the separation of the connecting device 27 from the locking device 20. Then hoist the frame body 1 structure and the I - shaped steel beam assembly 272 onto the upper - layer structural beam - slab respectively. After ensuring that all components are stably hoisted onto the upper - floor beam - slab, repeat the previous installation steps.

[0044] In summary, a tool - type scaffold for hoisting precast stairs proposed by the present utility model includes that the frame body and the connecting device can be processed, assembled and precast according to different stair - well sizes. At the same time, the double steel pipes on the I - shaped steel beam assembly are tightly locked by a conveniently detachable locking device, ensuring the integrity of the I - shaped steel beam assembly while improving the firmness and reliability of the overall structure. This structure can be hoisted integrally and reused multiple times, avoiding repeated erection of the scaffold, effectively accelerating the construction progress, reducing costs and saving labor costs.

[0045] Those of ordinary skill in the art should understand that: as described above is an implementation manner provided in combination with specific content, and it is not considered that the specific implementation of the present utility model is only limited to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any structure similar or identical to the method and structure of the present utility model, or any several technical deductions or replacements made under the premise of the inventive concept of the present utility model, should be regarded as within the protection scope of the present utility model.

Claims

1. A tool-type scaffold for hoisting prefabricated stairs, characterized in that: The invention comprises a frame (1), wherein the frame (1) comprises a vertical pole steel pipe (5) and a transverse steel pipe (4) and a longitudinal steel pipe (3) respectively connected to the vertical pole steel pipe (5) and intersecting with each other; a connecting device (27) for connecting to a building body is provided at the bottom (16) of the frame (1); a detachably connected locking device (20) is provided between the frame (1) and the connecting device (27); when the locking device (20) is unlocked, the connecting device (27) and the frame (1) can be disassembled or installed as a whole.

2. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The transverse steel pipe (4) is connected to the vertical pole steel pipe (5) by means of a fastener connection.

3. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The longitudinal steel pipe (3) is connected to the vertical pole steel pipe (5) by means of a fastener connection.

4. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The bottom (16) of the frame (1) is provided with corner hanging points (30) for hanging the frame (1), and the corner hanging points (30) include a first corner hanging point (31), a second corner hanging point (32), a third corner hanging point (33) and a fourth corner hanging point (34) located at four top corners of the bottom (16) of the frame (1), a first steel pipe (35) is connected between the first corner hanging point (31) and the third corner hanging point (33) to ensure the stability of the frame (1) during hanging, and a second steel pipe (36) is connected between the second corner hanging point (32) and the fourth corner hanging point (34) to ensure the stability of the frame (1) during hanging.

5. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The frame body (1) is also provided with obliquely intersecting vertical steel pipes (37) from the bottom (16) to the top (17).

6. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The connection device (27) comprises a threaded steel bar (271) for fitting onto a vertical pole steel pipe (5) and an I-beam assembly (272) connected to a main body of a building, wherein the threaded steel bar (271) is welded to a top flange plate (9) of the I-beam assembly (272) of the connection device (27).

7. The tool-type scaffolding for hoisting prefabricated stairs according to claim 6 is characterized in that: The I-beam assembly (272) is provided with a double steel pipe (2) which is locked and connected to the locking device (20).

8. The tool-type scaffolding for hoisting prefabricated stairs according to claim 1 is characterized in that: The locking device (20) comprises a threaded steel bar (201) welded to an I-beam assembly (272) and a locking fastener (202) for lockingly connecting with the double steel pipes (2).

9. The tool-type scaffolding for hoisting prefabricated stairs according to claim 8, characterized in that: The threaded steel bar (201) is provided with a force-bearing nut (10) and a locking nut (11) for fastening the locking fastener (202).

10. The tool-type scaffolding for hoisting prefabricated stairs according to claim 8, characterized in that: The locking fastener (202) is provided with a first curved surface (13) and a second curved surface (14) for pressing and locking the double steel pipes (2); the first curved surface (13) and the second curved surface (14) are connected via a metal connecting piece (12).

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