JP4113805B2 - Cutting equipment for reinforced concrete structures - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a cutting device for cutting a structure such as concrete, reinforced concrete, or brick or concrete block (hereinafter simply referred to as “reinforced concrete structure”) by wire sawing.
[0002]
[Prior art]
FIG. 1 shows a conventional cutting apparatus disclosed in Patent Document 1, and includes a mounting base 2 detachably fixed to a reinforced concrete structure 1 or the like by an anchor bolt or the like, and a protrusion from the mounting base 2. A self-propelled, which is provided with a main pole 4 provided with a rack 3, a main pulley 5 rotated by a motor, and a pinion that meshes with the rack 3 and is movably mounted on the main pole 4. A base 6, a guide bar 7 fixed perpendicularly to the main pole 4, and a plurality of guide pulleys 8a, 8b, 8c, 8d, which are detachably fixed to the guide bar 7 and are located on the same plane, The reinforced concrete structure 1 and the like and the main pulley 5 are composed of diamond wires 9 that are passed through guide pulleys 8a, 8b, 8c, and 8d. When cutting the object 1 etc., the main pulley 5 is rotationally driven to pull the diamond wire 9 hung on the reinforced concrete structure 1 etc., thereby retracting the self-propelled base 6 while wire sawing the reinforced concrete structure 1 etc. 9 slack is absorbed.
[0003]
During such wire sawing, heat generation of the diamond wire 9 and generation of dust are inevitable. Therefore, in the prior art, as shown in FIG. 1, the work is carried out while a large amount of water is poured as shown in the drawing where the outgoing diamond wire 9 and the reinforced concrete structure 1 and the like are in contact.
[0004]
[Patent Document 1]
JP-A-7-158290 [0005]
[Problems to be solved by the invention]
Water is sprayed by a nozzle installed near the entrance and the vicinity of the diamond wire 9 and the reinforced concrete structure 1 etc., but the wire sawing of the diamond wire 9 and the reinforced concrete structure 1 etc. as the cutting progresses. For example, as shown in a → b in FIG. 1, the place where it comes into contact must be temporarily stopped and the nozzle installation position must be changed. It is inefficient to interrupt the work every time the water supply position is changed. ,
A large amount of water is required for the work, and the used water is mixed with the chips to become sludge water, which takes a lot of work to recover and process.
Curing work such as covering with a sheet so that the supplied water does not splash around is necessary,
There was a problem such as.
[0006]
The present invention was made for the purpose of solving the above-mentioned problems. Wire sawing is performed without splashing water on a reinforced concrete structure, etc., and dust generated during work is sucked out by vacuum to interrupt wire sawing. It is an object of the present invention to provide a cutting device that can be performed without doing so.
[0007]
[Means for solving problems]
The invention according to claim 1 is a mounting base that is detachably fixed to a reinforced concrete structure or the like, a main pole that protrudes from the mounting base and is provided with a rack, a motor, and is driven to rotate by the motor. A main pulley and a pinion that meshes with the rack, a self-propelled base that is movably mounted on the main pole and moves along the main pole by the rotation of the pinion, and a plurality that is supported or attached to the main pole Reinforced concrete structure comprising a plurality of guide pulleys supported or attached to a guide pulley and / or a reinforced concrete structure, and a cutting cable spanned between the main pulley and the reinforced concrete structure via the guide pulley A cutting device for an object, etc., wherein at least one of the plurality of guide pulleys includes the guide pulley and An arm that is pivotally supported by an axis, follower means that is supported by the arm and that slidably engages the cutting cable to follow the position of the cable, and dust that is provided on the arm. It is characterized by comprising a suction port and a vacuum means connected to the suction port and sucking dust generated from a portion where the cutting cable on the outlet side contacts with the reinforced concrete structure or the like.
[0008]
According to the present invention, the position of the outlet cutting cable changes as the cutting progresses, and when the location where the cable contacts the reinforced concrete structure changes, the position of the suction port also follows the cutting cable. Displace towards. Further, since a large amount of water is not applied to the reinforced concrete structure or the like, water treatment is unnecessary, and a curing operation such as covering with a sheet so that water does not scatter around is also unnecessary.
[0009]
An example of the cutting cable used in the present invention is a diamond wire. Examples of the follow-up means include a hook that is hung on the cutting cable, a guide and a pulley that engage with the cutting cable, and among these, the friction resistance with the cutting cable is small, and the cutting cable is A pulley that runs smoothly is desirable. When a pulley is used, the cutting cable is sandwiched between a pair of pulleys, or one pulley is pressed by a spring so as to be engaged with the cutting cable from one side.
The vacuum means is not particularly limited as long as it is a device that generates a vacuum. One of these is the vacuum cleaner (industrial vacuum cleaner).
[0010]
The invention according to claim 2 is characterized in that the follow-up means of the invention according to claim 1 is a pulley engaged with a cutting cable,
The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, mist means for spraying water on a cutting cable coming out of a reinforced concrete structure or the like is provided.
According to the present invention, the outgoing cutting cable is cooled by the cooling water, but since the cooling water is sprayed in a sprayed state, no water treatment is required.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 shows a cutting apparatus shown in FIG. 1, in which an arm 11 is pivotally supported on a guide pulley 8a fixed to a guide bar 7 so as to be rotatable coaxially with the guide pulley 8a. 3), the arm 11 is biased to rotate counterclockwise in FIG. 2 and FIG. 3, and the arm 11 has a lower portion and an upper corner portion opened at the end thereof, and the lower portion is opened. A thin box-like casing 13 having a suction port 13a is fixed, and a diamond wire 9 as a cutting cable is passed through the casing 13 between the openings 13a and 13b of the lower and upper corners. A pulley 15 that is pivotally supported by the arm 11 is disposed in the casing 13, and is engaged with the diamond wire 9 from one side by the action of the helical spring 12.
[0012]
A dust collection port 16 connected to a vacuum cleaner (not shown) that is a vacuum means is attached to the casing 13, and a nozzle 17 (see FIG. 3) that constitutes a mist means is attached obliquely upward above the casing. Water is sprayed on the diamond wire 9 exiting the pulley 8a to cool it. In the illustrated example, the nozzle 17 is attached to the casing 13, but it may be attached to a place or part other than the casing 13.
[0013]
This apparatus is configured as described above. When cutting a reinforced concrete structure 1 or the like, dust generated from a portion where the outgoing diamond wire 9 and the reinforced concrete structure 1 etc. are in contact with each other is placed in the casing 13 by the vacuum cleaner. The air is sucked from the side suction port 13 a and discharged from the dust collection port 16. And the diamond wire 9 which came out of the casing upper corner part is cooled with the cooling water sprayed from the nozzle 17 on the guide pulley 8a.
[0014]
When the cutting progresses and the diamond wire 9 is displaced from the solid line position in FIG. 2 to the one-dot chain line position, the pulley 15 maintains the engagement state with the diamond wire 9 by the action of the helical spring 12 and the arm 11 and the counterclockwise of the figure. Rotate in the direction, the dust generated from the place where the diamond wire 9 and the reinforced concrete structure 1, etc. are in contact is sucked from the suction port 13a on the lower side, and continued to be removed from the dust collection port 16.
[0015]
【The invention's effect】
According to the first aspect of the present invention, the position of the dust suction port automatically changes following the cutting cable, and it is not necessary to interrupt the cutting operation for changing the position of the suction port, thereby improving the work efficiency. In addition, there is no need for curing work such as installing water treatment facilities and covering the surroundings with sheets so that water does not scatter.
[0016]
According to the invention according to claim 2, the cutting cable can be followed without impairing the smooth running of the cutting cable. According to the invention according to claim 3, the cutting cable is cooled by spraying the cooling water, Does not require water treatment.
[Brief description of the drawings]
FIG. 1 is a front view of a conventional cutting apparatus.
FIG. 2 is a front view of a cutting device according to the present invention.
FIG. 3 is a cross-sectional view of a main part of the apparatus.
[Explanation of symbols]
1. Reinforced concrete structures, etc. 2. Mounting base 3, Rack 4, Main pole 5, Main pulley 6, Self-propelled base 7, Guide bars 8a, 8b, 8c, 8d Guide pulley 9・ Diamond wire 11 ・ Arm 12 ・ Coil spring 13 ・ Case 15 ・ Pulley 16 ・ ・ Dust collector 17 ・ ・ Nozzle

Claims (3)

A mounting base that is detachably fixed to a reinforced concrete structure or the like, a main pole that protrudes from the mounting base and has a rack attached thereto, a motor, a main pulley that is rotationally driven by the motor, and the rack. A self-propelled base that has a pinion, is movably mounted on the main pole, and moves along the main pole by the rotational drive of the pinion, and a plurality of guide pulleys and / or reinforced concrete structures supported or attached to the main pole A cutting device for a reinforced concrete structure or the like, comprising a plurality of guide pulleys supported or attached to the cable, and a cutting cable that is passed between the main pulley and the reinforced concrete structure via the guide pulley. And at least one of the plurality of guide pulleys is coaxial with the guide pulley so as to be rotatable. Connected to the arm, follower means for slidably engaging the cutting cable to follow the position of the cable, a dust inlet provided in the arm, and connected to the inlet A cutting device comprising vacuum means for sucking dust generated from a portion where the outgoing cutting cable and the reinforced concrete structure are in contact with each other. 2. The cutting apparatus according to claim 1, wherein the following means is a pulley engaged with a cutting cable. The cutting device according to claim 1 or 2, further comprising mist means for spraying water on a cutting cable coming out of a reinforced concrete structure or the like.

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