JP4286971B2 - Tower crane removal method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to filter workpiece lane removing method easily performed removal of its dismantled parts.
[0002]
[Prior art]
When building a building structure, a tower crane is used as a means for lifting materials.
When a tower crane is used outside the building structure, a mast is first set up at a predetermined position outside the building structure, and the wall surface of the frame and the mast are firmly connected by a wall connecting material. And the crane main body which can be swung and can be raised / lowered is provided in the upper part of a mast, a mast is sequentially added upwards with the progress of frame construction, and a crane main body is raised along a mast with the raising / lowering apparatus with which the crane main body was equipped.
After the construction on the top floor is completed, the tower crane that has become unnecessary is dismantled and removed, but the dismantled parts of the tower crane, such as wall connecting materials, are suspended and removed by the crane itself.
[0003]
[Problems to be solved by the invention]
However, when the tower crane is in close proximity to the housing, the crane body is unable to turn because the crane body contacts the housing.
Therefore, when removing the dismantled parts, the direction in which the dismantled parts can be hung by the crane body itself is only the hoisting direction of the boom of the crane body. Therefore, when removing a dismantled part that is not in the boom up-and-down direction, the dismantled part is removed using a mobile crane for tower crane dismantling, but the use of the mobile crane is inefficient in removing work.
So, for example, the dismantling part is swung to the boom hoisting direction with a chain block taken from the mast so that the dismantling part can be hung by the crane itself, and then the dismantling part is suspended on the crane body, Although the dismantling parts are removed by the main body itself, it is dangerous to work at a high place.
[0004]
The present invention has been made in view of the above circumstances, and a tower that can safely turn and dismantle the dismantled parts of a tower crane such as a wall connecting material under conditions where the crane body cannot be turned. It aims at providing the removal method of a crane and a tower crane.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a load suspension device (20) capable of turning around a mast in a tower crane (1) provided with a crane body (10) that can be moved up and down along the mast (30). The construction provided in the crane body is characterized.
[0006]
Thus, according to the present invention , for example, when the crane main body cannot be turned, a load such as a wall connecting material in a direction in which the crane main body cannot be hung is suspended by a load lifting device, and The load suspension device swivels around the mast together with the load, so that the load can be easily swung to the direction in which the crane main body can be hung (the boom undulation direction) and the load is hung by the crane main body. Is possible.
[0007]
The present invention relates to a track (for example, rail 21) in which the load suspension device is fixed to surround the mast at the lower part of the crane body, and a traveling device (for example, a trolley) that rotates around the mast along the track. 22), and a suspension device (for example, a chain block 23) provided in the traveling device, for suspending a load (for example, a dismantling part of a tower crane such as a wall connecting member 40, a stay frame 41, and a reinforcing member 42), It is composed of.
[0008]
In addition, a track | orbit guides a traveling apparatus along the circumference | surroundings of a mast. Thus, according to the present invention, hanging load by crane, Ri is pivotable der traveling device around the mast along a track which is fixed so as to surround the mast to the crane bottom, front yn It becomes possible to easily turn to the direction in which the crane main body can be hung (the boom hoisting direction) and to suspend the load by the crane main body.
[0009]
The present invention uses a tower crane provided with the above-described load suspension device, and swings the load suspension device around the mast with respect to the crane main body so that the load suspension device has at least a tower crane and a building structure (100). ) And a process of suspending a dismantling part (for example, a wall connecting member 40, a stay frame 41, and a reinforcing member 42), and then a swiveling operation of a load lifting device that suspends the dismantling part around the mast. And a step of removing the dismantled parts suspended on the load suspension device from the crane main body, and a tower crane removing method.
[0010]
Thus, according to the present invention , the dismantling part of the tower crane is suspended by the load lifting device, and the dismantling part is swung to the direction in which the crane body can be hung around the mast (the boom undulation direction). Then, the dismantling part is suspended by the crane body. Therefore, even when the crane body cannot be turned, the crane body can be removed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Below, the 1st example of embodiment of this invention is demonstrated with reference to figures.
FIG. 1 is a front view showing a tower crane to which the present invention is applied. 10 is a crane body, 11 is a lifting device, 12 is a boom, 13 is a hook, 20 is a load lifting device, 30 is a mast, and 40 is a wall connecting material. , 100 is a building structure.
[0012]
As shown in FIG. 1, the crane body 10 having the lifting device 11 at the lower part is installed at the upper part of the mast 30, that is, the crane body 10 moves the mast 30 as the building construction of the building structure proceeds. The crane body 10 is lifted along the mast 30 by the lifting device 11 and is installed above the mast 30. In addition, after completion of the building construction of the building structure, the crane body 10 can be lowered along the mast 30 by the lifting device 11.
[0013]
The boom 12 is provided in the crane body 10, and the boom 12 can be raised and lowered by a raising and lowering device (not shown). The load is lifted by a hoisting device (not shown) using a hook 13 lowered from the tip of the boom 12 via a rope 14.
[0014]
The crane body 10 includes a turning device (not shown) and can turn above the mast 30.
As described above, the tower crane 1 can turn and undulate according to the construction status, and can suspend loads such as materials for building structures and dismantled parts of the tower crane.
[0015]
FIG. 2 is an enlarged view of the lower part of the crane body 10, and is a side view seen from the lateral direction. The wall connecting material 40 is a member that connects the mast 30 and the housing 100 of the building structure. The stay frame 41 is fixed to the mast 30 so as to surround the mast 30, and is a member that supports the wall connecting member 40 on the mast 30. The reinforcing member 42 is fixed to the mast 30 in the vertical direction, and is a member for fixing the stay frame 41 and the mast 30 more firmly. As shown in the figure, the wall connecting member 40 is supported on the mast 30 by a stay frame 41, and the stay frame 41 and the mast 30 are firmly fixed by a reinforcing member 42. And the wall connecting material 40 is being fixed to the wall of the housing 100 of a building structure. Thus, the mast 30 is firmly fixed to the housing 100 of the building structure by the wall connecting member 40, the stay frame 41, and the reinforcing member 42.
[0016]
The load suspension device 20 is a device capable of hanging the removed wall connecting member 40, the stay frame 41, and the reinforcing member 42 when the tower crane is disassembled. As shown in an enlarged view in FIG. 3, the load lifting device 20 is attached to the lower part of the mounting base 24. Then, the mounting base 24 and the mounting iron column 26 are fixed by the mounting bolts 25, 25, 25, and 25 so that the lower portion of the lifting device 11 is sandwiched in the vertical direction by the mounting base 24 and the mounting iron column 26. Thus, the load lifting device 20 is attached to the lifting device 11 provided in the crane body 10.
[0017]
The load suspension device 20 includes a rail 21, a trolley 22, and a chain block 23.
The rail 21 that is a track guides the trolley 22 along the periphery of the mast 30. The rail 21 is an I-shaped cross section, and is attached to the lower part of the lifting device 11 as shown in FIG. As shown in FIG. 4, the rail 21 has a circular shape and is attached so as to surround the mast 30.
[0018]
The trolley 22, which is a traveling device, includes wheels 221 on the front, rear, left, and right sides so as to be movable. The left and right wheels are inserted into the grooves of the rail 21 so as to sandwich the rail 21. In this way, the trolley 22 can turn around the mast 30 along the rail 21.
[0019]
The chain block 23, which is a hanging tool, is a device for hanging a load, and the chain block 23 is provided with a chain 231 and a hook 232, thereby enabling the load to be hung. The chain block 23 is attached to the trolley 22 and can turn around the mast along the rail 21 together with the trolley 22.
[0020]
Thus, the load suspension device 20 can suspend the load by the chain block 23 and can turn around the mast 30 by the rail 21 and the trolley 22.
[0021]
For example, when the tower crane 1 is approaching the building structure housing 100 after the construction of the top floor of the building structure is completed, the crane body 10 comes into contact with the building structure housing 100, and thus the crane body 10. Can't turn.
In such a case, a disassembly procedure of the tower crane 1 configured as described above will be described.
[0022]
The worker in the landing 31 removes the wall connecting material 40 that has fixed the mast 30 to the housing 100 of the building structure. Then, the operator turns the chain block 23 with the trolley 22 so that the removed wall connecting material 40 can be hung on the chain block 23. Then, the operator locks the removed wall connecting member 40 on the hook 232 of the chain block 23, or directly connects the wall connecting member 40 with the chain 231 and hangs it on the chain block 23. Then, the worker turns the trolley 22 together with the wall connecting material 40 suspended from the chain block 23 around the mast 30 along the rail 21. Thus, the operator can easily turn the wall connecting member 40 in the direction in which the crane body 10 can be hung (the direction in which the boom 12 is raised and lowered). Then, the wall connecting member 40 swung in the direction in which the crane body 10 can be hung is hung on the hook 13 of the crane body 10. Then, the boom 12 is turned down, the rope 14 is extended, and the wall connecting material 40 is suspended to the ground and removed.
[0023]
Similarly, the stay frame 41 and the reinforcing member 42 are also suspended from the chain block 23, and are swung around the mast 30 by the trolley 22 so that the crane body 10 can be hung in the direction in which the crane body 10 can be hung. Then, hang it on the crane body 10 and remove it.
[0024]
As described above, in the lower part of the crane body 10, the chain block 23 can be swung around the mast 30 along the rail 21 by the trolley 22, in the lower part of the crane body 10, and the direction in which the crane body 10 cannot be suspended. The dismantling parts such as the wall connecting member 40, the stay frame 41 and the reinforcing member 42 are suspended by the chain block 23, and the trolley 22 swivels around the mast 30 together with the chain block 23 and these dismantling parts. Can be swung in the direction in which the crane body 10 can be hung (the direction in which the boom 12 is raised and lowered), and the crane body 10 can be suspended and these dismantled parts can be hung by the crane body 10. The crane body 10 can be removed.
[0025]
In addition, in the above embodiment, although the hanging tool was the chain block 23, what is necessary is just an apparatus which can hang a load.
The track is a circular rail having an I cross-sectional shape, but any shape can be used as long as it guides the trolley along the periphery of the mast.
The dismantling part such as the wall connecting member 40 is hung by the hook 232 or the chain 231 of the chain block 23. For example, the disassembling part is mounted on the plate material and is hung by the hook 232 or the chain 231. You may suspend through this member. The same applies to the case of hanging on the hook 13 of the crane body 10. In addition, it is needless to say that details such as a method for removing a wall connecting material, a method for turning a load suspension device, a tower crane, a crane body, a trolley, and a mast wall connecting material can be appropriately changed.
[0026]
【The invention's effect】
According to the present invention , for example, when the crane main body cannot turn, a load in a direction in which the crane main body cannot be hung is hung by the load hanger, and the load hanger is mast together with the load. By turning around, the load can be easily turned to the direction in which the crane main body can be hung (boom hoisting direction). Therefore, the safety of the removal work at a high place is improved. Also, the crane body itself can suspend the load, and for example, it is not necessary to remove the dismantling parts using a mobile crane for dismantling the tower crane, and the efficiency of the tower crane removing operation is improved.
[0027]
According to the present invention, hanging load by crane, Ri traveling device pivotally der around the mast along has been fixed track to surround the mast to the crane bottom, front yn crane body flown It is possible to easily turn to the direction in which it is possible (boom hoisting direction). Therefore, the safety of the removal work at a high place is improved. Further, the crane body itself can hang the load, and for example, it is not necessary to remove the dismantling parts using a mobile crane for dismantling the tower crane, and the efficiency of the tower crane removing operation is improved.
[0028]
According to the present invention , the dismantling part of the tower crane is hung by the load lifting device, and the dismantling part is swung in a direction in which the crane main body can be hung (boom hoisting direction). Hanging dismantling parts. Therefore, even when the crane body cannot be turned, it can be removed by the crane body. For example, it is not necessary to remove the dismantling parts using a mobile crane for dismantling the tower crane, and the tower crane can be removed. Work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a front view showing a tower crane as an example to which the present invention is applied.
FIG. 2 is an enlarged side view showing a lower part of a crane body in FIG.
FIG. 3 is an enlarged view showing a specific example of the load suspension device of FIG. 1;
4 is a diagram showing a specific example of the load suspension device of FIG. 3 from above. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tower crane 10 Crane main body 11 Lifting device 12 Boom 20 Lifting device 21 Rail (track)
22 Trolley (travel device)
23 Chain block (suspender)
30 Mast 40 Wall connecting material (load)
41 Stay frame (load)
42 Reinforcement material (load)

Claims (2)

Using a tower crane equipped with a crane that can swivel around the mast on the crane body that can move up and down along the mast ,
Swiveling the load suspension device around the mast with respect to the crane body, and suspending at least a dismantling part constructed between the tower crane and the frame of the building structure on the load suspension device;
Next, a step of swiveling the load lifting device that suspends the dismantling part around the mast;
Next, the tower crane removal method characterized by comprising the step of suspending the dismantled parts suspended on the load suspension device to the crane body. A track in which a load lifting device is fixed to the lower part of the crane body so as to surround the mast, a traveling device that swivels around the mast along the track, and a suspension for hanging a load provided in the traveling device. The tower crane removing method according to claim 1, wherein the tower crane is removed from the tower crane.

Images