Dismounting tool for cantilever beam of cantilever scaffold and construction method

Abstract

The invention discloses a dismantling tool for a cantilever beam of a cantilever scaffold and a construction method, and belongs to the technical field of building construction. The dismantling tool for the cantilever beam of the cantilever scaffold comprises a fixing plate, a boosting device and a stretching rod, the bottom of the boosting device is fixed to the fixing plate, a top plate is arranged on the top of the boosting device, and the boosting device acts to push the top plate to move in the direction away from the fixing plate; one end of the stretching rod is fixed on the fixing plate, the other end is provided with a hook, and the hook and the boosting device are distributed on the same side of the fixing plate. The U-shaped fixing piece of the cantilever beam is fully used as a supporting point, and the boosting device is used for assistance, so that the cantilever beam is dismounted indoors and outdoors, the dismounting construction safety of the cantilever beam is greatly improved, the dismounting operation is simple and rapid, and high economic benefits can be obtained.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a dismantling tool and a construction method for a cantilever beam of a cantilever scaffold. Background Art

[0002] Cantilever scaffolding is a commonly used outdoor scaffolding in high-rise building construction. It is necessary to fix the cantilever beam indoors. The most common choices for cantilever beams are I-beams or H-beams. In practice, U-shaped fixings are generally used, such as U-shaped metal pull rings, to fix the cantilever beams to the indoor floor.

[0003] The dismantling of cantilever beams, which serve as the foundation of cantilever scaffolding, is an inevitable part of construction. It is an aerial operation and often requires the use of a tower crane's traction rope for towing. This poses a high safety risk and results in poor dismantling efficiency. Summary of the Invention

[0004] In order to overcome the technical problem of inconvenient disassembly of cantilever beams on existing cantilever scaffolding, the present invention provides a disassembly tool and a construction method for cantilever beams of a cantilever scaffolding.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The dismantling tooling for cantilever beams of cantilever scaffolding comprises a fixed plate, a booster device and a stretching rod. The bottom of the booster device is fixed on the fixed plate, and a top plate is arranged on the top of the booster device. The operation of the booster device can push the top plate to move away from the fixed plate. One end of the stretching rod is fixed on the fixed plate, and the other end is arranged with a hook. The hook and the booster device are distributed on the same side of the fixed plate.

[0006] In this application, the U-shaped fixings of the cantilever beam are fully utilized as support points, and supplemented by a booster device, so that the cantilever beam can be dismantled indoors and outdoors in coordination, which greatly improves the safety of the cantilever beam dismantling construction. The dismantling operation is simple and quick, and higher economic benefits can be achieved.

[0007] In some embodiments, there are two stretching rods, which are symmetrically distributed on both sides of the boosting device.

[0008] In some embodiments, the boosting device is a jack.

[0009] In some embodiments, the size of the top plate is smaller than the size of the hole on the wall for the cantilever beam to pass through.

[0010] In some embodiments, the stretching rod is provided with threads for engagement with the fixing bolts, and a bolt pad is provided between the fixing bolts and the fixing plate, and the fixing bolts and the boosting device are distributed on different sides of the fixing plate.

[0011] The present invention also provides a construction method for dismantling cantilever beams of a cantilever scaffold, which adopts the dismantling tool for cantilever beams of a cantilever scaffold as described in any of the above embodiments.

[0012] The following steps are involved: S1. The hook on the stretch rod matches the U-shaped fixing piece on the cantilever beam. The booster device is placed on one side of the cantilever beam's indoor end, so that the top plate of the booster device can push the cantilever beam toward the outside. S2. Outdoor high-altitude personnel complete the outdoor tower crane hanging of the cantilever beam; S3. Activate the booster device to push the cantilever beam outdoors; S4. The tower crane lifts the cantilever beam and transports it to the ground; S5. Repeat S1-S4 to dismantle multiple cantilever beams.

[0013] In some embodiments, the process further includes step S0 before step S1: removing the wooden diagonal plug between the cantilever beam and the U-shaped fixing piece.

[0014] In some embodiments, in step S1 , the placement position of the boosting device can be adjusted by adjusting the position at which the fixing plate is connected to the stretching rod so that the top plate just abuts against the end of the cantilever beam.

[0015] The beneficial effects of the present invention are: By making full use of the U-shaped fixings of the cantilever beam as support points and supplemented by a booster device, the cantilever beam can be dismantled indoors in coordination with the outdoors, which greatly improves the safety of the cantilever beam dismantling construction. The dismantling operation is simple and quick, and higher economic benefits can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the dismantling tool provided by the present invention Figure 1 ; Figure 2 Schematic diagram of the structure of the dismantling tool provided by the present invention Figure 2 ; Figure 3 Schematic diagram of the structure of the dismantling tool provided by the present invention Figure 3 ; Figure 4 This is a schematic diagram of the structure of the cantilever beam in the present invention when it is in use; Figure 5 for Figure 4 Schematic diagram of the structure after the wooden oblique plug is removed from the central cantilever beam; Figure 6 for Figure 5 Schematic diagram of the structure after the installation and removal of the tooling of the mid-cantilever beam; Figure 7 for Figure 5 Schematic diagram of the outdoor hanging state of the central cantilever beam; Figure 8 for Figure 7 Schematic diagram of the hanging state of the central cantilever beam after it is pushed outdoors; Figure 9 This is a schematic diagram of the cantilever beam in operation of the tower crane; Figure 10 Flowchart of the tooling implementation method for removal.

[0017] Marked in the figure are, 1-boost device, 2-fixing plate, 3-first stiffening plate, 4-tension rod, 5-top plate, 6-bolt pad, 7-second stiffening plate, 8-fixing bolt, 9-cantilever beam, 10-U-shaped fixing piece, 11-wooden oblique plug. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] like Figure 1-10 As shown, the present invention discloses a dismantling tool and a construction method for a cantilever beam of a cantilever scaffolding.

[0021] like Figure 1-Figure 3 As shown, the present invention provides a tool for dismantling cantilever beams of cantilever scaffolding, which is used Figure 4 The extrapolation process of the indoor section of the cantilever beam 9 described in; Figure 5-10 The demolition construction process of cantilever beam 9 is shown.

[0022] The dismantling tooling for cantilever beams of cantilever scaffolding comprises a fixed plate 2, a booster device 1 and a stretching rod 4. The bottom of the booster device 1 is fixed on the fixed plate 2, and a top plate 5 is arranged on the top of the booster device 1. The operation of the booster device 1 can push the top plate 5 to move away from the fixed plate 2; one end of the stretching rod 4 is fixed on the fixed plate 2, and the other end is arranged with a hook. The hook and the booster device 1 are distributed on the same side of the fixed plate 2.

[0023] In this application, the U-shaped fixings of the cantilever beam 9 are fully utilized as support points, and assisted by the boosting device 1, so that the demolition operation of the cantilever beam 9 can be carried out indoors in coordination with the outdoors, which greatly improves the safety of the demolition construction of the cantilever beam 9. The demolition operation is simple and quick, and higher economic benefits can be obtained.

[0024] In this embodiment, two stretching rods 4 are provided, and the two stretching rods 4 are symmetrically distributed on both sides of the boosting device 1 .

[0025] Reference Figure 6As shown, the hooks at the front ends of the two stretching rods 4 are connected to the U-shaped fixing pieces on the cantilever beam 9. This implementation facilitates balanced force.

[0026] In this embodiment, the boosting device 1 is a hydraulic jack. Obviously, a driving member such as a cylinder or a linear motor can realize the boosting function as long as the front end top plate 5 can achieve reciprocating linear motion.

[0027] In this embodiment, the size of the top plate 5 is smaller than the size of the hole on the wall for the cantilever beam 9 to pass through, so that the cantilever beam 9 can be pushed out as a whole.

[0028] As mentioned above, the cantilever beam 9 is usually an I-beam or H-beam, and its four end points can be connected to form a rectangular outline. The size of the top plate 5 should be smaller than or equal to the rectangular outline here. In this application, the cantilever beam 9 is an H-beam.

[0029] In this embodiment, the stretching rod 4 is provided with threads for engagement with the fixing bolts 8 , so as to adaptively adjust the position of the fixing plate 2 on the stretching rod 4 .

[0030] Furthermore, a bolt pad 6 is provided between the fixing bolt 8 and the fixing plate 2. The fixing bolt 8 and the booster device 1 are distributed on different sides of the fixing plate 2. The bolt pad 6 prevents loosening and improves the convenience and safety of the tooling.

[0031] like Figure 3 As shown, a first stiffening plate 3 is provided to connect the fixing plate 2 and the booster device 1, and a second stiffening plate 7 is provided to connect the bolt pad 6 and the fixing plate 2, so as to further improve the reliability of the tooling.

[0032] The present invention also provides a construction method for dismantling the cantilever beams of a cantilever scaffold, which adopts the above-mentioned dismantling tool for the cantilever beams of the cantilever scaffold.

[0033] Reference Figure 10 , including the following steps.

[0034] Removing the wooden oblique plug: Remove the wooden oblique plug between the cantilever beam 9 and the U-shaped fixing piece.

[0035] Installation and disassembly tooling: match the hook on the stretching rod 4 with the U-shaped fixing piece on the cantilever beam 9, and place the booster device 1 on one side of the end of the cantilever beam 9 indoors, so that the top plate 5 on the booster device 1 can move to push the cantilever beam 9 to move outdoors.

[0036] Furthermore, when installing the boosting device 1, the placement of the boosting device 1 can be adjusted by adjusting the position of the fixing plate 2 connected to the stretching rod 4 so that the top plate 5 just abuts the end of the cantilever beam 9. This simplifies the implementation process and effectively propels the cantilever beam 9.

[0037] Outdoor work: Outdoor high-altitude personnel complete the outdoor tower crane hanging of cantilever beam 9.

[0038] Obviously, there is no strict order requirement for the outdoor hanging operation here and the aforementioned installation and disassembly tooling steps.

[0039] Push the cantilever beam 9 outdoors: the booster device 1 on the disassembly and assembly tooling is actuated to push the cantilever beam 9 outdoors.

[0040] The tower crane places the cantilever beam 9: the tower crane lifts the cantilever beam 9 and transports it to the ground.

[0041] Repeat the above steps to complete the demolition of multiple cantilever beams 9.

[0042] The present invention discloses a dismantling tool and construction method for cantilever beams of cantilever scaffolding, which is generally applicable to cantilever beams 9 of the foundation of high-altitude cantilever scaffolding on the exterior wall of a building, such as cantilever H-shaped steel. The U-shaped fixings of the cantilever H-shaped steel are fully utilized, such as U-shaped clips or U-shaped metal pull rings, as support points. A stretching rod 4, a fixing plate 2 and a hydraulic jack are provided as an auxiliary boosting device 1 when dismantling the cantilever H-shaped steel, so as to achieve indoor and outdoor coordination in the dismantling of the high-altitude cantilever H-shaped steel, effectively assisting outdoor high-altitude personnel in the dismantling of the H-shaped steel, and solving the difficult problem of high-altitude dismantling of cantilever H-shaped steel of cantilever scaffolding on the construction site. This ensures the safety of dismantling the cantilever H-shaped steel and improves the construction efficiency of dismantling. This construction method effectively assists outdoor high-altitude personnel in dismantling the H-shaped steel, greatly improving the safety of dismantling construction of outdoor cantilever H-shaped steel. The dismantling operation is simple and quick, and higher economic benefits can be achieved.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for dismantling cantilever beams of cantilever scaffolding, characterized by: The invention comprises a fixed plate (2), a boosting device (1) and a stretching rod (4), wherein the bottom of the boosting device (1) is fixed on the fixed plate (2), and a top plate (5) is arranged on the top of the boosting device (1). The boosting device (1) is actuated to push the top plate (5) to move in a direction away from the fixed plate (2); One end of the stretching rod (4) is fixed on the fixed plate (2), and the other end is provided with a hook, and the hook and the boosting device (1) are distributed on the same side of the fixed plate (2).

2. The tool for dismantling cantilever beams of a cantilever scaffolding as claimed in claim 1, wherein: There are two stretching rods (4), and the two stretching rods (4) are symmetrically distributed on both sides of the boosting device (1).

3. The tool for dismantling cantilever beams of a cantilever scaffolding as claimed in claim 1, wherein: The boosting device (1) is a jack.

4. The tool for dismantling cantilever beams of a cantilever scaffolding as claimed in claim 1, wherein: The size of the top plate (5) is smaller than the size of the hole on the wall for the cantilever beam (9) to pass through.

5. The tool for dismantling cantilever beams of cantilever scaffolding according to any one of claims 1 to 4, characterized in that the stretching The rod (4) is provided with a thread for engaging with the fixing bolt (8), and a bolt pad (6) is provided between the fixing bolt (8) and the fixing plate (2). The fixing bolt (8) and the booster device (1) are distributed on different sides of the fixing plate (2).

6. A construction method for dismantling cantilever beams of cantilever scaffolding, characterized in that: The dismantling tool for cantilever beams of a cantilever scaffolding according to any one of claims 1 to 5 comprises the following steps: S1. The hook on the stretching rod (4) is matched with the U-shaped fixing piece on the cantilever beam (9), and the booster device (1) is placed on the end side of the cantilever beam (9) inside the room, so that the top plate (5) on the booster device (1) can move the cantilever beam (9) toward the outside; S2. Outdoor high-altitude personnel complete the outdoor tower crane hanging of the cantilever beam (9); S3. Start the booster device (1) to push the cantilever beam (9) outdoors; S4. The tower crane lifts the cantilever beam (9) and transports it to the ground; S5. Repeat S1-S4 to dismantle multiple cantilever beams (9).

7. The method for dismantling a cantilever beam of a cantilever scaffolding as claimed in claim 6, wherein: Before step S1, S0 is also included. S0: Remove the wooden diagonal plug between the cantilever beam (9) and the U-shaped fixing.

8. The method for dismantling a cantilever beam of a cantilever scaffolding according to any one of claims 6 or 7, wherein: In step S1, the placement position of the boosting device (1) can be adjusted by adjusting the position of the fixing plate (2) connected to the stretching rod (4) so ​​that the top plate (5) just abuts the end of the cantilever beam (9).

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