Device for dismantling ultrahigh steel truss gable wall

Abstract

The utility model discloses a device for dismantling an ultrahigh steel truss gable wall. The device comprises a main purline of an existing structure located above a steel truss gable wall, and further comprises a hanging basket, a top guide device, a winch and a bottom guide pulley, the hanging basket is connected with the main purline of the existing structure through a steel wire rope and suspended below the main purline of the existing structure, and the top guide device comprises two fixed pulleys suspended below the main purline of the existing structure. The two fixed pulleys are arranged at a certain interval and connected with a main purline of an existing structure through steel wire ropes, the winch and the bottom guide pulley are fixed to the ground on the side face of a gable wall of the steel truss, one end of the steel wire rope of the winch is connected with the winch, and the other end of the steel wire rope is a dismantling piece binding end. And the binding end of the dismantling piece sequentially bypasses the bottom guide pulley and the two fixed pulleys of the top guide device and then hangs down. The device is simple in structure, convenient to operate and low in construction safety risk, use of a large crane is avoided, multi-working-face construction can be achieved, and the construction progress can be accelerated.

Description

Technical Field

[0001] This utility model relates to a device for dismantling ultra-high steel space frame gable walls, belonging to the field of space frame construction. Background Technology

[0002] Many large factories currently use welded spherical steel space frame structures. The gable walls of these steel space frames are often quite high, sometimes exceeding 100 meters, classifying them as ultra-high steel space frame gable walls. When dismantling these ultra-high steel space frame gable walls, a top-down, segmented dismantling method is generally employed. This requires the use of large cranes. However, using large cranes for segmented dismantling presents challenges, including difficulty in controlling stress release during segment cutting, resulting in a high overall risk and danger. Furthermore, the large cranes must operate from inside the factory building, limiting their working area and hindering multi-faceted work. Additionally, the presence of cranes inside the factory building can interfere with other construction processes, impacting the overall construction progress. Utility Model Content

[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a device for dismantling ultra-high steel grid gable walls. When dismantling ultra-high steel grid gable walls, the use of large cranes can be avoided, the segmented cutting is easy to control, the construction safety risk is low, the operating area is small, multiple working surfaces can be constructed, and there is minimal interference with other processes.

[0004] This utility model is achieved through the following technical solution: a device for dismantling an ultra-high steel grid gable wall, comprising the main purlin of the existing structure located above the steel grid gable wall, characterized in that: it further comprises a suspended basket, a top guide device, a winch, and a bottom guide pulley. The suspended basket is connected to the main purlin of the existing structure by a steel wire rope and suspended below it. The top guide device comprises two fixed pulleys suspended below the main purlin of the existing structure. The two fixed pulleys are set at a certain distance and are both connected to the main purlin of the existing structure by steel wire ropes. The winch and the bottom guide pulley are both fixed on the ground on the side of the steel grid gable wall. One end of the steel wire rope of the winch is connected to the winch, and the other end is the binding end of the dismantling component. The binding end of the dismantling component hangs down after passing through the bottom guide pulley and the two fixed pulleys of the top guide device in sequence.

[0005] When using this invention for construction, workers can perform small-unit cutting operations inside the suspended platform. Before cutting, the unbundling end of the winch's wire rope is tied to the pole to be cut. After cutting, the cut small unit pole is slowly lowered to the ground using the winch, and then moved to a designated location using small machinery. During cutting, the small unit pole can be controlled using the winch's wire rope, minimizing construction safety risks.

[0006] Furthermore, to ensure the winch and bottom guide pulley are securely fixed and to guarantee the safety of the demolition operation, both the winch and bottom guide pulley are connected to the existing anchor foundation on the ground using anchors.

[0007] Furthermore, to facilitate the movement and adjustment of the winch according to the site conditions, wheels are installed on the lower part of the winch.

[0008] Furthermore, to ensure construction safety, the wire rope of the winch is connected to a guy rope at the binding end of the dismantling component. The dismantling component can be pulled using the guy rope.

[0009] The beneficial effects of this utility model are as follows: This utility model has a simple structure. By using a winch in conjunction with fixed pulleys, ultra-high steel grid gable walls can be reliably dismantled. The suspended platform, top guide device, bottom guide pulley, and winch are reliably fixed, ensuring construction safety. During the cutting process, the small unit members being cut can be controlled via the winch wire, minimizing construction safety risks. This utility model avoids the use of large cranes. During dismantling, only an appropriate safety zone needs to be defined to meet construction requirements. Dismantling is not affected by the site conditions, has minimal interference with other processes, and allows for multi-faceted construction, accelerating the construction progress. Using this utility model, small-unit cutting can be performed, resulting in minimal stress changes in the existing grid structure and minimal impact on the deformation of the original structure, thus better ensuring the safety of the existing structure. This utility model uses simple equipment, has a simple process, is easy to operate, and ensures construction safety. It has low safety risks and low construction costs for the dismantling of ultra-high steel grid gable walls. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is an enlarged schematic diagram of the suspended basket and the top pulley device in this utility model;

[0012] Figure 3 This is an enlarged schematic diagram of the winch and bottom fixed pulley in this utility model;

[0013] In the diagram, 1. Steel grid gable wall, 2. Winch, 3. Bottom guide pulley, 4. Wire rope of winch, 4.1. Binding end of dismantling component, 5. Suspended basket, 6. Main purlin of existing structure, 7. Top guide device, 7.1. First fixed pulley, 7.2. Second fixed pulley, 8. Secondary purlin of existing structure, 9. Guy rope, 10. Existing anchor foundation, 11. Anchor structure, 12. Front counterweight, 13. Rear counterweight. Detailed Implementation

[0014] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0015] As shown in the attached diagram, a device for dismantling an ultra-high steel grid gable wall includes a suspended platform 5, a top guide device 7, a winch 2, and bottom guide pulleys 3. The suspended platform 5 is connected to and suspended below the main purlins 6 of the existing structure located above the steel grid gable wall 1 via steel wire ropes. The top guide device 7 includes a first fixed pulley 7.1 and a second fixed pulley 7.2, which are suspended below the main purlins 6 of the existing structure at a certain distance. The first fixed pulley 7.1 and the second fixed pulley 7.2 are respectively connected to the main purlins 6 of the existing structure via steel wire ropes. The distance between the first fixed pulley 7.1 and the second fixed pulley 7.2 should be greater than 6m to ensure that the dismantled members can be moved horizontally outside the width range of the gable wall. Both the winch 2 and the bottom guide pulley 3 are fixed to the ground on the side of the steel grid gable wall. To ensure reliable fixing of the winch 2 and the bottom guide pulley 3, both are anchored to the existing anchor foundation 10 on the ground via an anchor structure 11. One end of the winch's wire rope 4 is connected to the winch 2, and the other end is the dismantling component binding end 4.1. The dismantling component binding end 4.1 passes sequentially around the bottom guide pulley 3, the first fixed pulley 7.1 of the top guide device, and the second fixed pulley 7.2 before hanging down. For safety, a guy rope 9 is connected to the dismantling component binding end 4.1 of the winch's wire rope 4. To facilitate the movement and adjustment of the winch 2, preferably, the lower part of the winch is equipped with rotatable wheels, which can flexibly move and adjust the winch according to the site conditions.

[0016] Depending on the construction site conditions, multiple units of this device can be installed, allowing for simultaneous construction on multiple work surfaces.

[0017] When using this invention for construction, firstly, a winch 2 and a bottom guide pulley 3 are installed on the ground. Then, workers climb to the top of the steel grid frame via the existing walkway, install the suspended basket 5 and the top guide device 7. Workers at the top of the steel grid frame pass a safety rope through the fixed pulley of the top guide device 7 and lower it down to the ground, connecting it to one end of the winch's wire rope 4. Then, a tractor is used to pull the winch's wire rope 4 to the top of the steel grid frame. After the entire device is installed, it is inspected to ensure safety. Then, existing poles are cut according to the predetermined plan, using a small-unit dismantling method. Before cutting, the winch's wire rope is tied to the pole to be cut. After cutting, the cut small units are slowly lowered to the ground using the winch 2, and then moved to a designated location using small machinery. They are then moved to the next work area.

[0018] This utility model has a simple structure, is easy to operate, has low construction safety risks, avoids the use of large cranes, and can carry out construction on multiple working surfaces, which can speed up the construction progress.

[0019] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A device for dismantling an ultra-high steel space frame gable wall, comprising main purlins of an existing structure located above the steel space frame gable wall, characterized in that: It also includes a suspended platform, a top guide device, a winch, and a bottom guide pulley. The suspended platform is connected to the main purlin of the existing structure by a steel wire rope and suspended below it. The top guide device includes two fixed pulleys suspended below the main purlin of the existing structure. The two fixed pulleys are set at a certain distance and are both connected to the main purlin of the existing structure by steel wire ropes. The winch and the bottom guide pulley are both fixed on the ground on the side of the steel grid gable wall. One end of the winch's steel wire rope is connected to the winch, and the other end is the end for binding the dismantling parts. The end for binding the dismantling parts passes through the bottom guide pulley and the two fixed pulleys of the top guide device in sequence and then hangs down.

2. The device for dismantling ultra-high steel grid gable walls according to claim 1, characterized in that: Both the winch and the bottom guide pulley are connected to the existing anchor foundation on the ground using anchors.

3. The device for dismantling ultra-high steel grid gable walls according to claim 2, characterized in that: The winch is equipped with wheels at the bottom.

4. The device for dismantling ultra-high steel grid gable walls according to claim 1, 2, or 3, characterized in that: The wire rope of the winch is connected to a guy rope at the unbundling end.

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