JPS6344079A - Body cutter for concrete structure - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a device for cutting the frame of a concrete structure, and more particularly to a cutting device suitably used for dismantling a cylindrical concrete structure.

``Conventional technology'' Conventionally known methods for dismantling cylindrical concrete structures include blasting methods, mechanical methods using impact or hydraulic pressure, thermal methods using flame or electric heating, and manual dismantling methods using scaffolding. ing. Using these methods as they are,
When demolition is carried out, explosive or mechanical methods will cause the concrete to become fragments and dust and be scattered around, thermal methods will generate a large amount of secondary waste such as smoke, and manual methods will require the construction of scaffolding. There was a problem in that it took a lot of effort to remove the pipes and the work speed was slow.

Also, the frame of a cylindrical concrete structure (for example, a wall?5
) by using a tubular cutting tool (core drill) to continuously perforate a predetermined portion of the thickness in the circumferential direction, thereby cutting the frame into an inner part and an outer part, and
A method has been proposed in which the cut inner part is cut in a lattice shape using a disc-shaped cutting tool (diamond blade) to form blocks, and the divided blocks are sequentially removed and dismantled.

With such a dismantling method, since the frame is dismantled while leaving the outer part of the frame intact, it is possible to obtain the fl1 point at which the concrete can be cut without scattering to the outside.

"Problems to be Solved by the Invention" By the way, when carrying out the concrete structure demolition method described above, up until now, one cutting device has been used, and the above-mentioned tube-shaped cutting tool is attached to the tip of the working arm. The idea was to attach whichever one of the disc-shaped cutting tools was needed and to proceed with the frame cutting work by replacing the cutting tools as necessary.

However, in a cutting method using such a device, it takes time to replace the cutting tool. However, drilling with a core drill is less efficient than cutting with a diamond blade and requires more time, resulting in longer construction times.

The present invention has been made in view of the above circumstances, and includes IV
A method for cutting the framework of a concrete structure that allows cutting of the framework of a concrete structure using only a Class X cutting tool, eliminates the need to replace the cutting tool, improves cutting efficiency, and facilitates storage and handling of the cutting tool. The purpose is to provide equipment.

"Means for Solving the Problems" In order to achieve the above object, the present invention includes an arm base provided on a column so as to be movable in the length direction of the column, and an attitude control mechanism attached to the arm base. and a cutting unit attached to the arm base, and the posture control mechanism is capable of moving and adjusting the cutting unit with respect to the arm base in the length direction of the arm base and three axes (X, Y, Z) perpendicular to each other. The cutting unit is configured to be able to control its posture so as to face in any direction among the directions, and the cutting unit is characterized by comprising a cutting tool and a cutting tool moving operation section that moves the cutting tool.

"Operation J" To explain the case where the cutting device of the present invention is used to cut the frame of a concrete structure, for example, a vertical wall part, first, the attitude of the cutting unit is controlled by the attitude control mechanism, and the cutting unit is attached to the cutting unit. Center the cutting tool so that it is perpendicular to the top of the wall.In this state, after cutting to a predetermined depth, move the cutting tool using the cutting tool movement operation section to cut a predetermined portion in the thickness direction of the wall. The wall is cut continuously in the circumferential direction, and the wall is edge-trimmed into an inner part and an outer part.

Next, operate the posture control mechanism so that the cutting direction of the cutting tool of the cutting unit is vertical, and in this state, drive the cutting tool movement operation section to move the cutting tool to remove the cut inside wall. Cut vertically at predetermined intervals in the circumferential direction.

Next, operate the posture control mechanism so that the cutting direction of the cutting tool is horizontal, and move the cutting tool by driving the cutting tool movement operation part in the same way as for surface cutting, and cut the inner wall of the wood wool. Cut in the direction.

By repeating the above operations, one type of cutting tool (
For example, just a disc-shaped diamond blade)
The inner part of the wall can be divided into blocks.

"Example" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

This example shows an example in which the cutting device according to the present invention is used for demolition work of a cylindrical concrete structure,
FIG. 1 is a partially sectional side view showing the cutting device set in a concrete structure.

Reference numeral 1 in the figure is a cylindrical concrete structure, and a frame 2 is installed on the upper part of the concrete structure. A support 4 is provided in the center of the pedestal 2 so as to hang down. This support 4 is rotatable at any angle by a rotation device 3 installed between it and the pedestal 2, and is provided so as to be located in the center of a space 5 surrounded by the inner wall 1a of the concrete structure 1. There is. Further, a support leg 6 is attached to the lower end of the column 4, so that the lower end of the column 4 is prevented from swinging, and the rotation after being set at a predetermined angle is restricted by two locations at the upper and lower ends. It has become. The support leg 6 is connected to a main body 7 fixed to the support support 4, and an arm 8 provided to extend and contract radially horizontally from the main body 7, and the tip of the arm 8 is pressed against the inner wall 1a. . The number of arms 8 may be 2 or 3 or more and can be set to any number.

A cutting device 9.9 according to the present invention and a clamping device IO for removing block pieces cut by the cutting device 9 are installed in the middle part of the column 4, respectively, and wires 11S and 12 are connected to each other.
1.13, it is attached so that it can move vertically along the support column 4. Also,
14 shows the state of cutting by the cutting device 9 and the clamping device! This is a monitor television camera for observing the state in which the block piece is gripped by the robot.

The cutting device 9 includes an arm base 21 provided on the support 4 so as to be movable in the longitudinal direction thereof, and a cutting unit 23 attached to the arm base 21 via a posture control mechanism 22 (see FIG. 2). ), the attitude control mechanism 22 moves the cutting unit 23 with respect to the arm base 21, and
The cutting unit is configured to be able to adjust its movement in the length direction (X direction in FIG. 6) and to control its posture so as to face in any direction among the three axes (X, Y, Z) directions orthogonal to each other. Reference numeral 23 includes a cutting tool 24 and a cutting tool moving operation section 25 that moves the cutting tool 24 in the cutting direction.

Next, to explain each of these mechanisms in detail, FIG. 3 shows the configuration of a part of the arm base 2I and the posture control mechanism 22 connected thereto. By using the rails as rails, it is possible to move up and down along the support column 4. A cylindrical arm 31 is provided on the arm base 21 via a bearing 32 so as to be freely rotatable about the central axis Q of the arm base 21 .

A toothed portion 33 is formed on the outer periphery of the end of the arm 31 that is housed in the arm base 21, and a pinion 35 that is rotatably driven by a motor 34 fixed to the arm base 21 via a connecting shaft 34a is attached to this toothed portion 33. They mesh together.

Further, a piston rod 36 is inserted into the central hole 31a of the arm 31 from the tip side (left side in FIG. 3).

The piston rod 36 is attached to the arm 31 with the sliding key 3
7 prevents rotation, and is provided so as to be movable in the direction of the rotation axis of the arm 31. A motor 38 is attached to the end of the arm 31 housed in the arm base 21, and the motor 38 is rotatably supported by the arm 31 via a bearing 39 so as to pass through the arm 31. It is connected to a threaded rod 40 via a joint 41. screw! i%40 is the piston rod 3
The piston rod 36 is inserted into a hole 36a formed in the center of the piston rod 6, and is screwed into a threaded portion 36b formed inside the end of the piston rod 36 on the arm base 21 side.

A connecting arm 42 is fixed to the tip of the piston rod 36 (see FIGS. 4 to 6). The flat plate base 43 of the connecting arm 42 has bearings 4 at both left and right ends (X direction in FIG. 6).
4.44, and a shaft 45.45 is rotatably supported on this bearing 44 so as to be perpendicular to the central axis Q1 of the arm base 21. A rotary table 47 is attached to the shaft 45 via a plate 4G.
7 rotates about a shaft 45 in a direction perpendicular to the oil mud axis Q.

A gear 48 is attached to one of the shafts 45 that supports the rotary table 47, and this gear 48 meshes with a gear 50 that is rotated by a motor 119 fixed to the flat base 43. When the motor 49 is driven, one shaft 45 is rotated via the gear 50.48, and the rotary table 47 is rotated as shown in FIGS. 4 and 5. ing.

Further, in FIGS. 6 to 8, 51 is a locking mechanism for positioning and fixing the rotary table 47 at a position orthogonal to the central axis gl of the arm base 21 or parallel to the coaxial line e. In the locking mechanism 51, an abbreviated plate 52 is fixed to the same side of the rotary table 47 as the plate 46 is provided, and holes 52a and 52b are formed at two predetermined locations on the plate 52, respectively. Turntable 47
is rotated by the drive of the motor 49 and reaches a position perpendicular to the axes Q and l, the cylinder 53 attached to the flat base 43 of the connecting arm 42 is actuated, and then the protruding slider rod The seventh hole should be inserted into the hole 52a.
On the other hand, when the rotary table 47 comes to a position parallel to the axis (!1), the cylinder 54 attached to the flat plate base 43 of the connecting arm 42 is actuated, and the rod protruding from it is inserted into the hole 52b. (see FIG. 8), thereby making it possible to restrict the rotation of the rotary table 47 with respect to the connecting arm 42.

The above is the attitude control mechanism 22 connected to the arm base 21.
The composition is as follows.

Further, to explain the cutting unit 23 based on FIGS. 4 to 6, two guide rails 61 and 61 are provided on the left side surface of the rotary table 47 in FIG. 4, parallel to each other and orthogonal to the axis Q1. A feed base 63 is attached to the guide rail 61 via a slider 62 so as to be movable along the longitudinal direction of the guide rail 61.

Further, the rotary table 47 is formed in a U-shape, and a rattle 65 is rotatably provided at the bent portions of both ends via bearings 64 and parallel to the guide rail 61.

The screw barrel 65 is connected via a joint 67 to a motor 66 provided on the outside of the bent portion of one end of the rotary table 47 via a connecting portion (aug 6a), and is rotated by the motor 66. Also, the screw W, 65
is screwed together with a nut portion 68 extending from the feed base 63, and when the screw barrel 65 is rotated by the motor 66, the feed base 63 is moved along the guide rail 61 by the screw mechanism. There is.

A motor 69 is fixed to the feed table 63, and the cutting tool 24, which is made of a disc-shaped diamond blade, is attached to the motor 69, and its axis of rotation is aligned with the guide rail 61. threaded rod 6
It is installed perpendicular to the 5th mag. In addition, 70 is a cover attached to the case song of the motor 69,
This prevents chips and the like from scattering to the outside during cutting.

Next, a method for disassembling the inner wall 1a using the cutting device 9 and clamping device 1O configured as described above will be explained.

p13 First, as shown in FIG.
4 along the circumferential direction of the inner wall 1a, and moved U-1 inner wall 1a
Cut the edges into inner and outer parts.

That is, the motor 49 attached to the connecting arm 12
is driven so that the axis of rotation of the cutting tool 24 aligns with the arm base 21.
In other words, the turntable 47 is set so as to be parallel to the central axis r21 of the axis Q1, or perpendicular to the axis Q1 (see FIGS. 4, 6, and 7). Next, the lock mechanism 51
The clamp 53 is actuated and the rod protruding from the clamp is inserted into the hole 52a of the plate 52, and the rotary table 47 is placed in this state.

Next, the motor 34 in the arm base 21 is driven to rotate the arm 31 and the connecting arm 12 around the axis Q1, so that the screw barrel 65 for feeding the cutting tool 24 is parallel to the top of the inner wall 1a. Set it so that Also, at the same time,
The motor 38 in the arm base 21 is driven to move the piston rod 36 in the length direction with respect to the arm base 21, and the cutting tool 24 is set to be located at a predetermined position in the thickness direction of the inner wall 1a.

In this state, the wire is operated while the motor 69 is driven and the cutting tool 24 is rotated, and the entire cutting device is moved along the support column 4 to cut into the inner wall 1a. After cutting to a predetermined depth, the wire operation is stopped, and then the motor 66 of the cutting tool moving operation section 25 is driven to move the feed table 63.
The cutting tool 24 is integrally moved along the circumferential direction of the inner wall 1a to edge-cut the inner wall 1a into an inner portion and an outer portion.

Ell] When the above-mentioned cutting is completed, the cutting tool 24 is once moved upward along with the cutting device 4 to control the attitude of the cutting tool 24, and then, with respect to the inner part of the inner wall 1a where the edge has been cut,
It is cut vertically at predetermined intervals in the circumferential direction (see Fig. 9).

That is, the rod of the cylinder 53 of the locking mechanism 51 is retracted to release the lock, and in this state, the motor 49 is driven to rotate the rotary table 47 and the cutting tool 24 by 90 degrees about the shaft 45. Then, the cylinder 54 is driven to insert the cylinder rod into the hole 52b and locked in this state (see FIGS. 5 and 8).

Next, the motor 34 in the arm base 21 is driven, and the arm 31. The piston rod 36, the connecting arm 42, etc. are rotated about the central axis Q1 of the arm base, and set so that the cutting tool 24 faces in the vertical direction. Next, the motor 38 in the arm base 2I is driven to move the piston rod 36, the connecting arm 42, etc. with respect to the arm 31 along the axis C direction of the arm base 2I, and the cutting tool 24 is moved.
The amount of cut into the inner wall 1a is adjusted.

After the above work is completed, the motor 69 is driven to rotate the cutting tool 24, and in this state, the motor 66 is driven, and the cutting tool 24 is integrally connected to the feeding table 63 by a screw mechanism.
Cut into the inner part of the inner wall 1a while moving the cutter 4 in the vertical direction. Hereinafter, while moving the cutting tool 24 in the circumferential direction of the inner wall 1a, similar operations are performed to cut the inner wall 1a vertically at predetermined intervals in the circumferential direction.Next, horizontal cuts are made to the inner wall 1a. , thereby dividing the inner part of the inner wall 1a into blocks (
(See Figure 1O).

That is, while the rotary table 47 is locked at 90 degrees with respect to the connecting arm 42, the motor 3.1 is driven to rotate the arm 31. The piston rod 36, rotating table 47, etc. are rotated about the axis σ1, and the cutting tool 24 is positioned in the horizontal direction. In the second state, the cutting device 9 is adjusted in the vertical direction, and then, while the cutting tool 24 is rotationally driven by the motor 69, the motor 38 is driven to move the piston rod 36 and the connecting arm 42 close to the inner wall la side. garnish,
The inner wall 1a is cut horizontally by the cutting tool 24.

Next, the motor 38 is stopped, and the rotating device 3 is driven to rotate the cutting tool 24 in the circumferential direction of the inner wall 1a while keeping it in the horizontal direction, thereby dividing the inner portion of the inner wall 1a into blocks.

In addition, if 1a is not cylindrical but linear, the motor 38
At the same time, the motor 6 of the cutting tool movement operation section 25 is stopped.
6 and keep the cutting tool 24 horizontally while keeping it on the inner wall 1a.
is moved in the circumferential direction to divide the inner part of the inner wall la into blocks.

Thereafter, the divided block pieces are gripped by the clamp device IO and taken out to the outside.

In this way, the inner part of the inner wall 1a can be dismantled.

In the above embodiment, a disk-shaped diamond blade is used as the cutting tool, but other cutting tools such as a high-pressure jet injection device, a laser generator, etc. can also be used.

Furthermore, in the above embodiment, the case where a cylindrical concrete structure is demolished using the cutting device of the present invention is explained as an example, but the structure to which the cutting device of the present invention is applied is a cylindrical structure. For example, it may be a box-shaped structure, and is not limited to a cylindrical structure.

"Effects of the Invention" As explained above, according to the present invention, it is possible to cut in three directions orthogonal to each other with a -FJt type cutting tool, which eliminates the need to replace cutting tools, and eliminates the need for cutting tubes with poor cutting efficiency. Cutting can be performed efficiently using only the cutting tool without using a shaped cutting tool (core drill), and work efficiency can be greatly improved. Further, as mentioned above, since there is only one type of cutting tool, the cutting tool can be easily stored and handled.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing the entire cutting device of the present invention, FIG. 2 is a schematic configuration diagram of the cutting device, FIG. 3 is a vertical sectional view showing the structure of the arm base and the arm, and FIG. 4 5 is a partially sectional side view showing details of the connecting arm and the cutting unit, FIG. 5 is a side view showing different states of the cutting unit shown in FIG. 4, and FIG. 7 and 8 are diagrams illustrating different rotational states of the connecting arm and the rotary table, and FIGS. 9 and 1θ are diagrams illustrating the operation of the cutting device. l... Concrete purchase, 9, Rirom 3... Rotating device, 4... Support column, 6... Support leg, 9... Cutting device, IO... Clamp Device, 21... Arm base, 22... Posture control mechanism, 23... Cutting unit, 24... Cutting tool, 25... Cutting tool movement operation Part, 31...Arm, 36...Piston loft, 37...Sliding key, 42...Connection arm, 17...Rotary table, 51...Lock mechanism, 61...・Guide rail, 62...Feeding base.

Claims (1)

[Claims] A cutting device that is attached to a support that is fixed parallel to the frame part of a concrete structure to be cut,
The support includes an arm base that is movable in the length direction of the support, and a cutting unit that is attached to the arm base via an attitude control mechanism, and the attitude control mechanism is configured to be connected to the arm base. The cutting unit can be moved and adjusted in the length direction of the arm base, and the three axes (X, Y) perpendicular to each other
, Z) direction, and the cutting unit is configured to include a cutting tool and a cutting tool moving operation section for moving the cutting tool. Equipment for cutting the framework of concrete structures.