Cutting device for tower body

Abstract

To provide a cutting device for a tower body capable of easily cutting by a small number of people.SOLUTION: A cutting device 100 is provided with a support part 1, an axial line moving part 2 which is provided on the support part 1 and moves an inner peripheral surface 91 of a cylindrically formed tower body 9 in an axial line direction O of the tower body 9, a circumferential moving part 3 which is provided on the support part 1 and moves the inner peripheral surface 91 of the tower body 9 in the circumferential direction, and a cutting part 4 which is provided at the distal end of the circumferential moving part 3 and cuts the tower body 9. The support part 1 has a column part 16 which is expandable in the radial direction of the tower body 9.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cutting device for a tower body.

Background Art

[0002] Conventionally, when cutting and disassembling a tower body, there is a case where a cutting device suspended by a crane or the like is inserted into the erected tower body and the tower body is cut from the inside with the cutting device (see Patent Document 1 below).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the method disclosed in Patent Document 1 has a problem that it is necessary to suspend the cutting device with a crane or the like, resulting in large-scale disassembly work. In addition, there is also a method of laying the tower body down, installing a scaffold outside the tower body, and having workers on the scaffold cut the tower body from the outside. However, since this is a work performed in an unstable state, there is a problem that it is necessary to perform the work with a plurality of people.

[0005] Therefore, the present invention has been made in view of the above circumstances, and provides a cutting device for a tower body that can be easily cut with a small number of people.

Means for Solving the Problems

[0006] In order to achieve the above object, the present invention employs the following means. That is, the tower body cutting device according to the present invention includes a support portion, an axial movement portion provided on the support portion and moving along the axial direction of the tower body on the inner peripheral surface of the tower body, a circumferential movement portion provided on the support portion and moving along the circumferential direction on the inner peripheral surface of the tower body, and a cutting portion provided at the tip of the circumferential movement portion for cutting the tower body.

[0007] In the tower body cutting device according to the present invention configured as described above, the cutting device is installed inside the tower body, and is moved by the axial movement portion to a desired position in the axial direction of the tower body. While moving the inner peripheral surface of the tower body in the circumferential direction by the circumferential movement portion, the tower body is cut by the cutting portion. Therefore, a crane or the like is not required, and since the work can be performed at a stable location inside the tower body, the tower body can be easily cut with a small number of people.

[0008] Further, in the tower body cutting device according to the present invention, the support portion may have a support column portion that can expand and contract in the radial direction of the tower body.

[0009] In the tower body cutting device according to the present invention configured as described above, the support column portion of the support portion can expand and contract in the radial direction of the tower body. Therefore, the length of the support column portion can be adjusted according to the diameter length of the tower body, and the radial lengths of the axial movement portion, the circumferential movement portion, and the cutting portion can be adjusted to optimal lengths.

[0010] Further, in the tower body cutting device according to the present invention, the support portion may have a base portion that supports the support column portion.

[0011] In the tower body cutting device according to the present invention configured as described above, the support column portion can be stably supported by the base portion.

Effects of the Invention

[0012] According to the tower body cutting device of the present invention, it can be easily cut with a small number of people.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0014] The cutting device for a tower body according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view of the cutting device according to an embodiment of the present invention as seen from the axial direction of the tower body. FIG. 2 is a view taken in the direction of the arrow along line II of FIG. 1. As shown in FIGS. 1 and 2, the cutting device 100 includes a support part 1, an axial movement part 2, a circumferential movement part 3, and a cutting part 4.

[0015] The cutting device 100 is disposed inside the tower body 9 formed in a cylindrical shape, and cuts the tower body 9 from the inner circumferential side toward the outer circumferential side. In the description of the cutting device 100, the movement direction of the axial movement part 2 will be described based on the state arranged along the axial direction O of the tower body 9. As shown in FIG. 2, one side in the axial direction O is indicated by O1, and the other side in the axial direction O is indicated by O2.

[0016] FIG. 3 is a view taken in the direction of the arrow along line III of FIG. 2. As shown in FIG. 3, the support part 1 has a base part 10, a support column part 16, and diagonal member parts 17, 18, 18.

[0017] The base portion 10 has first base members 11, 11, a second base member 12, and a third base member 13. The first base members 11, 11 are arranged apart from each other in the circumferential direction of the tower body 9. The first base member 11 is a long member that is long in the axial direction O. The second base member 12 connects the ends of the first base members 11, 11 on one side O1 in the axial direction O. The third base member 13 connects the ends of the first base members 11, 11 on the other side O2 in the axial direction O. As shown in FIG. 3, when viewed from the side of line III in FIG. 2, the base portion 10 is a substantially rectangular member.

[0018] FIG. 4 is a view showing a state in which the support column portion 16 of the cutting device 100 is expanded and contracted. The support column portion 16 is supported by the third base member 13. The support column portion 16 is a long member that extends from the third base member 13 toward the inside in the radial direction of the tower body 9. As shown in FIG. 2, the support column portion 16 has a plurality of square tubular columns 16a, 16b, 16c with different cross-sectional dimensions. By a drive mechanism (not shown), the column 16b is movable radially outward of the tower body 9 with respect to the column 16c. The column 16a is movable radially outward of the tower body 9 with respect to the column 16b. In this way, as shown in FIG. 4, the support column portion 16 expands and contracts in the radial direction of the tower body 9. Note that the number and shape of the columns constituting the support column portion 16 can be set as appropriate.

[0019] As shown in FIG. 3, the diagonal member portion 17 connects the center in the length direction of the second base member 12 and the support column portion 16. As shown in FIG. 2, the connection location between the diagonal member portion 17 and the support column portion 16 is the outer portion in the radial direction of the tower body 9 of the support column portion 16. The diagonal member portion 17 extends so as to gradually go inward in the radial direction as it goes toward the other side O2 in the axial direction O.

[0020] As shown in FIG. 3, the diagonal member portion 18 connects the end of the first base member 11 on the other side O2 in the axial direction O and the support column portion 16. The connection location between the diagonal member portion 18 and the support column portion 16 is the outer portion in the radial direction of the tower body 9 of the support column portion 16. The diagonal member portion 18 extends so as to gradually go inward in the radial direction as it goes toward the support column portion 16 side.

[0021] The axial movement part 2 has four wheels 21. The wheels 21 are, for example, tires, bearings, etc. The wheels 21 are provided at both ends in the longitudinal direction of the two first base materials 11. The wheels 21 are rotatable by a drive part (not shown) and the rotational speed is adjustable. As shown in FIG. 1, the wheels 21 are in contact with the inner peripheral surface 91 of the tower body 9. The wheels 21 are provided on the first base material 11 so as to be movable in the axial direction O along the inner peripheral surface 91 of the tower body 9. The rotation of the wheels 21 can be stopped by a brake handle 22 provided on the first base material 11.

[0022] As shown in FIG. 2, the circumferential movement part 3 has a rotating arm 31, a guide roller support part 32, and a guide roller 33.

[0023] The rotating arm 31 is a long member extending radially outward from the inner part in the radial direction of the support column part 16. The rotating arm 31 has a plurality of cylindrical arm columns 31a, 31b, 31c with different flat cross-sectional dimensions. By a drive mechanism (not shown), the arm column 31b is movable radially outward with respect to the arm column 31a. The arm column 31c is movable radially outward with respect to the arm column 31b. In this way, the rotating arm 31 expands and contracts in the radial direction. Note that the number and shape of the columns constituting the rotating arm 31 can be set as appropriate.

[0024] The inner part in the radial direction of the rotating arm 31 is connected to the inner part in the radial direction of the support column part 16. The rotating arm 31 is provided so as to be movable in the circumferential direction with respect to the support column part 16 by a drive part (not shown).

[0025] The guide roller support part 32 is connected to the outer part in the radial direction of the rotating arm 31. The guide roller 33 is provided on the outer part in the radial direction of the guide roller support part 32. The guide roller 33 is in contact with the inner peripheral surface 91 of the tower body 9. Along with the circumferential movement of the rotating arm 31, the guide roller 33 is movable in the circumferential direction along the inner peripheral surface 91 of the tower body 9. The rotational speed of the guide roller 33 is adjustable.

[0026] The cutting part 4 includes a connecting part 41 and a fusion cutting torch 42. The connecting part 41 is connected to the tip part on the outer side in the radial direction of the circumferential movement part 3. The fusion cutting torch 42 is connected to the connecting part 41. The fusion cutting torch 42 abuts against the inner circumferential surface 91 of the tower body 9 and cuts the tower body 9 from the inner side in the radial direction toward the outer side.

[0027] In the cutting device 100 for the tower body configured in this way, it is installed inside the tower body 9 and moved to a desired position in the axial direction O by the axial movement part 2. While moving the inner circumferential surface 91 of the tower body 9 in the circumferential direction by the circumferential movement part 3, the tower body 9 is cut by the cutting part 4. Therefore, a crane or the like is unnecessary, and since the work can be done at a stable place inside the tower body 9, the tower body can be cut simply with a small number of people.

[0028] In addition, the support column part 16 of the support part 1 can expand and contract in the radial direction of the tower body 9. Therefore, according to the diameter length of the tower body 9, the length of the support column part can be adjusted, and the radial lengths of the axial movement part 2, the circumferential movement part 3, and the cutting part 4 can be adjusted to optimal lengths.

[0029] Also, the support column part 16 can be stably supported by the third base material 13 of the base part 10.

[0030] Note that the various shapes, combinations, etc. of the respective constituent members shown in the above-described embodiment are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.

[0031] For example, in the above-described embodiment, the tower body 9 is formed in a cylindrical shape, but it is not limited to this. The tower body 9 cut by the cutting device 100 for the tower body may be formed in a semi-cylindrical shape, as long as it has at least a part of the circumferential surface as the inner circumferential surface.

Explanation of Reference Numerals

[0032] 1 Support part 2 Axial movement part 3 Circumferential movement part 4 Cutting part 9 Tower body 16 Strut part 91 Inner circumferential surface 100 Cutting device for tower body O-axis direction

Claims

1. A support part, An axial movement part provided on the support part and moving the inner peripheral surface of the tower body in the axial direction of the tower body, A circumferential movement part provided on the support part and moving the inner peripheral surface of the tower body in the circumferential direction, A cutting device comprising a cutting part provided at the tip of the circumferential movement part for cutting the tower body.

2. The cutting device according to claim 1, wherein the support part has a support column part that can expand and contract in the radial direction of the tower body.

3. The cutting device according to claim 2, wherein the support part has a base part for supporting the support column part.

Images