JP2011021423A - Cutting method by wire saw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a construction time by increasing cutting capacity by the combined use of a plurality of wire saw units sized to be easily carried into the field. <P>SOLUTION: The first wire saw unit 1a and the third wire saw unit 1c are linearly arranged, and the second wire saw unit 1b is installed in a position off a straight line that connects the first and third wire saw units 1a, 1c. Connecting caster pulleys 5a, 5b arranged between the second wire saw unit 1b and the first and third wire saw units freely change the traveling direction of a wire 3 to allow a change in the layout of the wire saw units. Since the wire 3 is driven by the plurality of wire saw units, cutting force is increased, and a cutting time is reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cutting method for increasing cutting ability by using a plurality of diamond wire saw units used when cutting a concrete structure or rock.

  Cutting and dismantling of a concrete structure using a diamond wire saw (see Japanese Patent Laid-Open Nos. 9-41682 and 2595470) and cutting out stone materials at a quarry (see Japanese Patent Laid-Open No. 6-246636) are performed. ing. A diamond wire saw has a structure in which diamond beads for cutting are fixed to a steel wire at an appropriate interval. The wire is wound around an object to be cut, and the wire is driven at a high speed by a driving device so that the wire is bitten into the object. It will be cut off.

  The cutting method using a diamond wire saw can cut a concrete structure freely with low noise and low vibration. Therefore, as proposed in Patent Document 1, etc., the cutting and removal of the structure and the expansion joint of the expressway Used for cutting and removing concrete slabs and expansion joints during repair and replacement.

JP 2001-226914 A

In urban areas and high-traffic highways, railways, airports, and other terminals, construction is required within a limited amount of time during the night, but the capacity of conventional small wire saw drives that are easy to carry in is limited. The construction time could not be shortened.
High-capacity wire saw drive units are often large and difficult to carry into the construction site, and even if they can be carried in somehow, it takes time to install and set up, shortening the actual cutting work time. Even if possible, the total work time could not be reduced, and the total construction time could not be reduced.
Therefore, the present invention reduces the cutting time by shortening the entire construction time by combining a plurality of wire saw units of a size that can be easily carried into the construction site in order to shorten the cutting time, thereby improving the cutting ability. It enables early opening of construction sites.

A plurality of wire saw units having a wire drive pulley, a wire take-up auxiliary pulley, and a wire take-up adjusting pulley are connected so that an endless wire is driven by each wire saw unit via a caster pulley, and is to be cut. It is a method of cutting an object.
When there are three wire saw units, the first and third wire saw units are arranged linearly, and the second wire saw unit is installed at a position off the straight line connecting the first and third wire saw units. And a method of cutting the object to be cut by converting the traveling direction of the wire with a caster pulley disposed between the first and third wire saw units.

  When there are four wire saw units, the first and fourth wire saw units are arranged linearly, the second and third wire saw units are arranged linearly, and deviated from the straight line connecting the first and fourth wire saw units. In the method of cutting the object to be cut by changing the traveling direction of the wire by the caster pulley installed between the first wire saw unit and the second wire saw unit, and between the third wire saw unit and the fourth wire saw unit. is there.

  Since wires are arranged using a combination of a plurality of wire saw units, it is easy to carry in and install at the work site and can be completed in a shorter time than when using a large wire saw drive unit. In addition, by increasing the number of wire saw units used, the cutting capacity will increase, so the cutting time of the structure can be shortened. When used to cut and remove expansion joints on highways, traffic is blocked. Time can be shortened, and smooth road traffic can be secured by opening the construction site early.

The conceptual diagram of the state which connected the two wire saw units. The conceptual diagram of the other state which connected the two wire saw units. The conceptual diagram of the state which connected the three wire saw units. The conceptual diagram of the state which connected the four wire saw units. The conceptual diagram of an example of a wire saw unit.

A combination arrangement of wire saw units and an arrangement of caster pulleys for interconnection in the cutting method of the present invention will be described based on a conceptual diagram.
As shown in FIG. 5, the wire saw unit 1 includes a drive pulley 2 that applies a driving force to the wire 3, wire adjustment pulleys 21 and 22 that adjust the slack of the wire 3 that occurs as the cutting operation proceeds, an auxiliary pulley 23, and the wire 3. The caster pulleys 5 for converting the traveling direction into the horizontal direction are arranged at both ends of the wire inlet and outlet and are installed on a base (not shown) provided with moving wheels.
A plurality of relatively small wire saw units 1 having the same ability are arranged, and the endless wires 3 are sequentially wound from the first wire saw unit to the final wire saw unit, wound around the object to be cut, and the whole operates in a coordinated manner. In this way, the wire winding adjustment pulleys 21 and 22 of each unit apply a tension to the wire 3 to increase the cutting ability and perform cutting.

Example 1
As shown in FIG. 1, two wire saw units 1 are connected to each other. A first wire saw unit 1a and a second wire saw unit 1b are arranged in series, and the rotation shafts of the drive pulleys 2a and 2b of the wire saw units 1a and 1b are shown. Are parallel, and the drive pulleys 2a and 2b are arranged on a straight line.
The endless wire 3 is stretched between the first and second wire saw units 1a and 1b, and the wire 3 fed out from the first wire saw unit 1a is changed in traveling direction by caster pulleys 5a and 5b, so that the first wire saw Guided to unit 1b. The two caster pulleys 5a and 5b can be installed at arbitrary positions because the rotation direction of the pulleys changes according to the traveling direction of the wire.

The wire 3 is wound around the drive pulley 2a of the first wire saw unit 1a, guided to the adjustment pulleys 21 and 22 of the second wire saw unit 1b via the caster pulleys 5a and 5b, and wound around the drive pulley 2b. The caster pulleys 5a and 5b can move in the running direction as long as the tension is applied to the wire 3 even when the cutting object 100 is being cut and the cut portion is close to the wire saw units 1a and 1b. Since it follows, the wire 3 does not come off from the caster pulleys 5a and 5b.
By connecting the wire saw units 1a and 1b and unifying the whole, two driving forces can be used, and the force for driving the wire 3 is increased to increase the cutting speed.
In the example shown in FIG. 2, the first wire saw unit 1a and the second wire saw unit 1b are arranged so as to be shifted, and the distance between the wire saw units is made smaller than that in the arrangement example shown in FIG.

Example 2
As shown in FIG. 3, it is a cutting method in which three wire saw units are connected, the first wire saw unit 1a and the third wire saw unit 1c are arranged linearly, and the respective drive pulleys 2a, 2c are on a straight line. Be placed. The second wire saw unit 1b is disposed at a position deviating from the straight line connecting the first wire saw unit 1a and the third wire saw unit 1c, and the traveling direction of the wire 3 is converted by the caster pulley 5 between the wire saw units. .

  In order to make the layout of the wire saw units 1a, 1b, 1c compact, even when the distance between the first and third wire saw units 1a, 1c is reduced and made smaller, the caster pulley 5 follows the cutting travel direction of the wire 3 and is smooth. You can travel to.

Example 3
As shown in FIG. 4, it is a cutting method in which four wire saw units are connected.
The first and fourth wire saw units 1a and 1d are linearly arranged, and the second and third wire saw units 1b and 1c are linearly arranged at positions deviating from the straight line connecting the first and fourth wire saw units. . Even if the wire saw unit is not arranged linearly, the traveling direction of the wire 3 is changed by the caster pulley, so that the wire 3 can travel smoothly.

DESCRIPTION OF SYMBOLS 1 Wire saw unit 2 Wire drive pulley 21, 22 Wire winding adjustment pulley 23 Wire winding auxiliary pulley 3 Wire 5 Caster pulley

Claims (3)

A plurality of wire saw units having a wire drive pulley, a wire take-up auxiliary pulley, and a wire take-up adjusting pulley are coupled so that the endless wires are driven by the respective wire saw units via the caster pulley, and the first And a cutting method in which an endless wire is wound around an object to be cut through a caster pulley of a final wire saw unit. In Claim 1, there are three wire saw units, the first and third wire saw units are linearly arranged, and the second wire saw unit is installed at a position deviating from the straight line connecting the first and third wire saw units. The caster pulley disposed between the second wire saw unit and the first and third wire saw units is disposed so as to guide the wire saw obliquely or perpendicularly to the straight line connecting the first and second wire saw units. Cutting method that is what. In Claim 1, there are four wire saw units, the first and fourth wire saw units are linearly arranged, the second and third wire saw units are linearly arranged, and the first and fourth wire saw units are connected. The caster pulleys installed at positions deviating from the straight line and arranged between the first wire saw unit and the second wire saw unit, and between the third wire saw unit and the fourth wire saw unit are in relation to the straight line connecting the first and fourth wire saw units. And a cutting method in which the wire saw is arranged so as to be guided obliquely or at a right angle.

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