Self-dismounting device for cargo boom of tower crane

Abstract

The utility model discloses a self-dismounting device for a cargo boom of a tower crane, which comprises a self-dismounting device frame body, a guide mechanism for guiding a hoisting steel wire rope of the crane is arranged on the self-dismounting device frame body, and a connecting structure for mounting the self-dismounting device frame body on the cargo boom through a clamping mechanism is arranged at the bottom of the self-dismounting device frame body. The problem that the tower crane cannot be normally disassembled due to the fact that some parts of the tower crane collide with a building and cannot automatically descend to the ground for disassembly height when the tower crane is not fully considered during early positioning of the tower crane and an enough tower crane descending space is not reserved is solved.

Description

[Technical field]

[0001] The utility model relates to the technical field of tower cranes, and in particular to a self-disassembly device for a tower crane lifting arm. [Background technology]

[0002] Tower cranes (abbreviated as tower cranes) are vertical transportation construction machinery frequently used in the construction industry. They are usually installed next to buildings under construction, and their height increases synchronously with the height of the buildings under construction. After the construction project is completed, the tower crane is usually lowered from a high altitude to the ground disassembly height, and then the tower crane boom is disassembled by a ground truck crane. However, due to insufficient consideration during the initial positioning of the tower crane, sufficient tower crane lowering space was not reserved, resulting in some parts of the tower crane colliding with the building during the tower lowering, and the tower crane could not be lowered to the ground disassembly height by itself, so the tower crane could not be disassembled normally.

[0003] Under normal circumstances, tower cranes on the market are usually lowered by lowering the tower crane by themselves, and then the tower crane boom is dismantled on the ground by a small truck crane. However, due to positioning errors, some parts of the tower crane collide with the building when the tower crane is lowered, making it impossible to dismantle the tower crane normally. Larger, more expensive, and more time-consuming large-scale lifting and hoisting equipment must be used directly at ultra-high altitudes for dismantling. If there is a large basement in the building, large equipment may not be able to approach, making it impossible to dismantle the tower crane. There are also cases where helicopters are used to assist in the dismantling of the tower crane. This type of dismantling process is cumbersome and the dismantling cost is too high. [Contents of the utility model]

[0004] The utility model provides a tower crane boom self-disassembly device, which is used for high-altitude disassembly of a tower crane boom section which cannot be lowered by itself, so as to solve the above problem.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-disassembly device for the boom of a tower crane, comprising a self-unloading device frame, on which a guide mechanism for guiding the lifting wire rope of the crane is provided, and a connecting structure for installing it on the boom through a clamping mechanism is provided at the bottom of the self-unloading device frame.

[0006] As described above, the self-disassembly device for the tower crane boom, the self-unloading device frame includes a front support rod and a rear tie rod, the front support rod and the rear tie rod are coupled forwardly and tilted, so that the boom to be disassembled can be located below the coupling point between the front support rod and the rear tie rod.

[0007] As in the above-mentioned tower crane boom self-disassembly device, the angle between the front support rod and the boom is greater than the angle between the rear tie rod and the boom.

[0008] As in the above-mentioned tower crane boom self-disassembly device, the guide mechanism is installed on the coupling point of the front support rod and the rear tie rod.

[0009] As in the above-mentioned tower crane boom self-disassembly device, the guide mechanism includes a fixed pulley that guides the crane lifting wire rope.

[0010] As in the above-mentioned tower crane boom self-disassembly device, the guide mechanism also includes an anti-rope jumping device that can prevent the crane lifting wire rope from detaching from the fixed pulley during operation.

[0011] As in the above-mentioned tower crane boom self-disassembly device, the connecting structure includes a first connecting plate provided with a fastening hole arranged at the bottom of the front support rod and a second connecting plate provided with a fastening hole arranged at the bottom of the rear tie rod, so that the clamping mechanism can clamp the front support rod on the upper chord of the tower crane boom through the first connecting plate and clamp the rear tie rod on the upper chord of the tower crane boom through the second connecting plate.

[0012] As in the above-mentioned tower crane boom self-disassembly device, the clamping mechanism includes a first clamping plate provided with a fastening hole that cooperates with the first connecting plate and a second clamping plate provided with a fastening hole that cooperates with the second connecting plate.

[0013] As in the above-mentioned tower crane boom self-disassembly device, the clamping mechanism includes bolts, and the bolts are used to clamp the first connecting plate and the first clamping plate and the second connecting plate and the second clamping plate so that the self-unloading device frame is installed on the boom.

[0014] As in the above-mentioned tower crane boom self-disassembly device, the front support rod or the rear tie rod is a welded structure of channel steel and rectangular tube, and the first connecting plate or the second connecting plate is a steel plate.

[0015] Compared with the prior art, this application has the following advantages:

[0016] 1. The device has a simple structure, is easy to use, safe and stable, and does not require additional auxiliary lifting equipment during installation.

[0017] 2. The invention has novel structure, light weight, low factory manufacturing cost, can be reused many times, and has good economic efficiency.

[0018] 3. The present invention has small dimensions, is easy to install and disassemble, and has low installation and use costs.

[0019] 4. The present invention saves the time of selecting, searching, proposing and setting up ultra-high altitude large-scale lifting equipment, greatly saves time cost and labor cost, greatly reduces the disassembly cost, and is very economical.

[0020] 5. Compared with ultra-high altitude and ultra-long distance disassembly, it is safer and more efficient.

Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0022] Figure 1 This is a diagram showing the initial state of a self-disassembly device for a tower crane boom according to the utility model;

[0023] Figure 2 This is a process state diagram of a tower crane boom self-disassembly device of the utility model;

[0024] Figure 3 The utility model is a diagram showing a disassembly completion state of a self-disassembly device for a tower crane boom. [Specific implementation method]

[0025] like Figure 1-3 As shown, a tower crane boom self-disassembly device includes a self-unloading device frame 3, on which a guide mechanism 1 for guiding the crane lifting wire rope is provided, and at the bottom of the self-unloading device frame 3, a connecting structure 4 is provided for installing it on the boom through a clamping mechanism 2.

[0026] Furthermore, the self-unloading device frame 3 includes a front support rod 31 and a rear tie rod 32, and the front support rod 31 and the rear tie rod 32 are coupled forwardly and tilted so that the lifting arm to be disassembled can be located below the coupling point between the front support rod 31 and the rear tie rod 32.

[0027] Furthermore, the angle between the front support rod 31 and the boom is greater than the angle between the rear tie rod 32 and the boom.

[0028] Furthermore, the guide mechanism 1 is installed on the coupling point of the front support rod 31 and the rear tension rod 32 .

[0029] Furthermore, the guide mechanism 1 comprises a fixed pulley 11 for guiding the hoisting wire rope of the crane.

[0030] Furthermore, the guide mechanism 1 also includes an anti-rope jumping device 12 which can prevent the crane lifting wire rope from detaching from the fixed pulley 11 during operation.

[0031] Furthermore, the connecting structure 4 includes a first connecting plate 41 provided with a fastening hole arranged at the bottom of the front support rod 31 and a second connecting plate 42 provided with a fastening hole arranged at the bottom of the rear tensioning rod 32, so that the clamping mechanism 2 can clamp the front support rod 31 on the upper chord of the tower crane boom through the first connecting plate 41 and clamp the rear tensioning rod 32 on the upper chord of the tower crane boom through the second connecting plate 42.

[0032] Furthermore, the clamping mechanism 2 includes a first clamping plate 22 provided with a fastening hole that cooperates with the first connecting plate 41 and a second clamping plate 23 provided with a fastening hole that cooperates with the second connecting plate 42 .

[0033] Furthermore, the clamping mechanism 2 includes bolts 21 , and the bolts 21 are used to clamp the first connecting plate 41 and the first clamping plate 22 and the second connecting plate 42 and the second clamping plate 23 so that the self-unloading device frame 3 is installed on the crane arm.

[0034] Furthermore, the front support rod 31 or the rear tie rod 32 is a structure of channel steel and rectangular tube welded together, and the first connecting plate 41 or the second connecting plate 42 is a steel plate.

[0035] The working principle of the utility model is as follows:

[0036] In the specific implementation, the self-unloading device frame is first installed on the upper chord of the tower crane boom manually, and the extension plate is clamped and fixed to the clamping plate by the bolts. Then, the lifting wire rope of the crane is passed through the fixed pulley, and the lifting wire rope is ensured to be stable by the anti-jumping rope device.

[0037] When disassembling a boom section, first tighten the lifting wire rope, pull the boom section to be disassembled, and properly adjust the lifting wire rope to facilitate the removal of the upper chord pin of the boom section to be disassembled. After tightening the lifting wire rope, lower the boom section to be disassembled to a suitable angle, and then disassemble the lower chord pin of the boom. Finally, lift the lifting wire rope to lower the boom section to a suitable position on the ground, and complete the disassembly of the boom section.

[0038] The above is an implementation method provided in combination with specific content, and it is not considered that the specific implementation of this application is limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or any technical deduction or replacement made on the premise of the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. A tower crane boom self-disassembly device, characterized in that: It comprises a self-unloading device frame (3), on which a guide mechanism (1) for guiding a crane hoisting wire rope is provided, and at the bottom of the self-unloading device frame (3) there is provided a connection structure (4) for mounting the self-unloading device frame on a crane arm via a clamping mechanism (2); The self-unloading device frame (3) comprises a front support rod (31) and a rear tie rod (32), wherein the front support rod (31) and the rear tie rod (32) are coupled forwardly and tilted so that the lifting arm to be disassembled can be located below the coupling point between the front support rod (31) and the rear tie rod (32); The connection structure (4) comprises a first connection plate (41) provided with a fastening hole and arranged at the bottom of the front support rod (31) and a second connection plate (42) provided with a fastening hole and arranged at the bottom of the rear tie rod (32), so that the clamping mechanism (2) can clamp the front support rod (31) on the upper chord of the tower crane boom through the first connection plate (41) and clamp the rear tie rod (32) on the upper chord of the tower crane boom through the second connection plate (42).

2. The tower crane boom self-disassembly device according to claim 1, characterized in that: The included angle between the front support rod (31) and the lifting arm is greater than the included angle between the rear tie rod (32) and the lifting arm.

3. The tower crane boom self-disassembly device according to claim 1, characterized in that: The guide mechanism (1) is installed at the coupling point between the front support rod (31) and the rear tension rod (32).

4. The tower crane boom self-disassembly device according to claim 1, characterized in that: The guide mechanism (1) comprises a fixed pulley (11) for guiding the hoisting wire rope of the crane.

5. The tower crane boom self-disassembly device according to claim 4, characterized in that: The guide mechanism (1) also includes an anti-rope jumping device (12) capable of preventing the crane hoisting wire rope from detaching from the fixed pulley (11) during operation.

6. The tower crane boom self-disassembly device according to claim 1, characterized in that: The clamping mechanism (2) comprises a first clamping plate (22) provided with a fastening hole and cooperating with the first connecting plate (41), and a second clamping plate (23) provided with a fastening hole and cooperating with the second connecting plate (42).

7. The tower crane boom self-disassembly device according to claim 6, characterized in that: The clamping mechanism (2) comprises a bolt (21), and the bolt (21) is used to clamp the first connecting plate (41) and the first clamping plate (22) and the second connecting plate (42) and the second clamping plate (23), so that the self-unloading device frame (3) is installed on the lifting arm.

8. The tower crane boom self-disassembly device according to claim 1, characterized in that: The front support rod (31) or the rear tie rod (32) is a structure of channel steel and rectangular tube welded together, and the first connecting plate (41) or the second connecting plate (42) is a steel plate.

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