JP3007980B2 - Cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire saw type cutting apparatus suitable for use in cutting stones, concrete structures and the like.

[0002]

2. Description of the Related Art A cutting device for cutting an endless wire saw which is stretched across a plurality of pulleys by pressing the same against an object to be cut while circulating and moving in a predetermined direction by a driving pulley is known.
Used for cutting structural structures. This cutting device
A wire saw is wound around an object to be cut, and
It can be used to cut large structures and objects with complicated shapes relatively easily, and can be cut underwater, etc., so it has recently been widely used in urban civil engineering. .

[0003] As a wire saw, a flexible cord is provided with large-diameter cutting blades at appropriate intervals, and hard teeth such as diamond particles are embedded on the surface of the large-diameter cutting blade. In general, the wire saw is applied with an appropriate tension and travels in a predetermined direction while being pressed against an object to be cut.

[0004]

The above wire saw type cutting device requires an appropriate tension on the wire saw,
A wire saw whose length is adjusted according to the size of the object to be cut is used. That is, the object to be cut is small and the wire
If the wire saw becomes loose, the wire saw is cut to shorten the wire saw. Conversely, if the wire saw to be used for the object to be cut is too short, a spare wire saw of an appropriate length is used. However, this length adjustment is a troublesome and complicated operation, and it is difficult to perform this operation at a construction site or the like, which causes a reduction in work efficiency.

[0005] In addition, since the wire saw is expensive, the cuts generated by adjusting the length are stored as spare parts and are used in addition to the wire saw having a short length.
Since the wire saw wears due to use and the diameter of the cutting edge decreases, adding a spare piece with less wear to it adds excessive force to this part during use, causing trouble such as abnormal wear or cutting. May occur. Therefore, an object of the present invention is to make it possible to easily adjust the length of the wire saw without cutting or adding.

[0006]

In order to solve the above problems, the present invention employs the following configuration. That is, the cutting device according to the present invention supports the drive pulley to the saw unit that moves on rails, an endless wound on the driving pulley Waiyaso - circulating movement wound around the object to be cut to the guide pulley as a guiding And the cutting machine body is
In a cutting device for cutting an object to be cut while applying tension to the wire saw by moving the wire saw along a rail, a mounting frame fixed to the rail is provided near the rail, and the wire saw is moved in a predetermined direction. Apart from the guiding guide pulleys, setting only a plurality of detour pulley spaced apart from each other on the mounting frame, by passing over the wire saw between the plurality of detour pulley, said at installation position near the rail Wire saw extra
The feature is that the length can be absorbed .

[0007]

Since the cutting device is provided with a plurality of bypass pulleys for bypassing the circulation path of the wire saw, the wire saw is actually detoured by using the bypass pulley, so that the wire saw is actually detoured. With a wire saw longer than required for cutting
Can also be used as it is because the extra length can be absorbed . For this reason, a sufficiently long wire source
If you have prepared , you do not need to perform the work of separation and splicing. Further, since the plurality of bypass pulleys are mounted on the mounting frame integrally provided with the rail near the rail supporting the cutting machine main body, the whole is compact and does not require a large space, and It is convenient for handling such as transportation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in the drawings will be described below. This cutting apparatus 1 is for cutting a building or the like with a loop-shaped wire saw-3 fed from a known wire machine 2. As shown in FIG. 2, the wire saw -3 is provided with cutting blades (beads) 5 having a large diameter at a predetermined pitch on an outer peripheral portion of a flexible cord body 4. It is a known one in which diamond particles are planted on the surface of the blade portion. As an example of a wire saw, for example, the diameter of the cord body 4 is 5 mm, and the diameter of the cutting blade 5 is 10.
5 mm, the pitch of the cutting blades is 25 mm, and diamond particles having a particle size of # 40 are dispersed and planted in the cylindrical cutting blades.

As shown in FIG. 1, a wire machine 2 is provided with a cutting machine main body 10 provided with a driving pulley 8 rotated by a motor 7 and provided on a frame 9. Le 11
The main body is provided with a tension applying device 13 for pulling the main body backward. The tension applying device 13 has a wire 14 having one end attached to the main body 10 and a winding winch 16 housed and fixed in a weight case 15 attached to the other end of the wire 14. The source functions as a weight that applies tension to the wire source via the driving pulley. And
The weight, that is, the weight case and the winch, are suspended by the wire 14 from a pulley 20 supported by an arm 19 provided at the upper end of the column 18. Therefore,
The main body 10 is always pulled rearward by the weight of the winch 16 and the weight case 15 so as to always apply an appropriate tension to the wire source.

[0010] As the cutting progresses, the loop of the wire saw-3 is drawn toward the wire machine 2, but the main body 10 retreats along the rail 11 as it is, so that the wire saw is not loosened. When the main body 10 is retracted, the weight case 15 descends together with the winch 16. When the lower end of the lowering step is reached, the winch 16 and the weight case in which the winch is stored are wound up by the winch 16.

In the drawing, reference numeral 21 denotes a guide rod for guiding the lifting and lowering of the weight case 15, and reference numeral 22 denotes an actuator of a limit switch for detecting the upper end of the winding process.
When this actuator comes into contact with the arm of the column 18,
Winding by the winch 16 automatically stops. The weight case 15 is provided with a weight storage portion 15a in addition to the winch storage portion, and a spare weight 23,... -3 can be adjusted.

At the front end of the frame 9, a pulley support 25 is provided upright. The support 25 has a prismatic shape, and a pair of upper and lower mounting blocks 27, 27 are mounted so as to be vertically adjustable, and guide pulleys 28 (a, b) are mounted on side surfaces of the movable blocks 27, respectively. When the mounting block 27 is rotated by 90 degrees in a horizontal plane and mounted on the pulley support 25, the direction of the guide pulley 28 mounted thereon changes by 90 degrees, so that the direction of the frame does not change. Also, the wire saw can be fed out in a direction perpendicular to the longitudinal direction of the frame, and the object to be cut located in this direction can be cut. A fixed guide pulley 29 is provided at the front end of the rail 11.
Is provided.

The cutting device 1 includes a plurality of bypass pulleys for bypassing the wire saw-3 in addition to the guide pulleys described above.
A detour device 30 provided with a hole is provided. First, a first detour pulley 31 is provided below the fixed guide pulley 29.
And a horizontal second detour pulley 32 on its side.
Is provided. The pulley 32 is integrally provided with a flange 32a for preventing the wire saw from falling off. A third detour pulley 33 is provided behind the pulley, a fourth detour pulley 34 is provided in front of the third detour pulley 33, and a fifth detour pulley 35 is further rearward thereof. Is provided. At the front side of the drive pulley, there is provided a sixth bypass pulley 36 supported on a horizontal horizontal shaft.

The bypass pulleys 33, 34, 35 are mounted on the mounting frames 40, 40 in the front-rear direction parallel to the rail 11 provided on the frame 9 so as to be adjustable in position. That is, the mounting frame 40 has a groove 40a formed along its axis as shown in FIG.
At the lower side of the detour pulleys, there are provided a mounting tool 41 to which the rotation shaft of the pulley is mounted, and a screw shaft 42 projecting downward from the mounting tool. Also, a pin 4 protruding downward is attached to the mounting tool 41 of these detour pulleys.
3 are provided, and the pin and the screw shaft 42 are fitted in the groove 40a. These three detour pulleys are mounted at an arbitrary position on the frame by clamping the mounting frame 40 between the mounting tool 41 and a nut 44 screwed to a screw shaft 42 with a washer therebetween. Fixed.
When tightening or loosening the nut 44,
The pin of the mounting tool 41 is inserted into the groove 40 of the mounting frame 40.
Since the rotation of the mounting tool 41 is prevented by contacting the edge of a, only the nut needs to be turned with a single wrench, and the work can be easily performed even in a narrow site.

When using the cutting apparatus 1, the wire saw-3 wound around the cutting position of the workpiece W is wound around each guide pulley, the detour pulley and the drive pulley to form an endless loop. State. In this case, the cutting machine body 10 is positioned near the front end of the rail, and the weight case is lifted. Also, the position of the detour pulley is adjusted so that the wire saw-3 is not loosened and an excessive force is not applied.

In this state, the motor of the cutting machine main body is driven, and the wire saw-3 is circulated in a predetermined direction via the driving pulley. In the illustrated example, the wire source that has exited the drive pulley
Is wound around an object to be cut from the upper guide pulley 28 (a), and is received by the lower guide pulley 28 (b) therefrom.
That is, the detour pools 31, 32, 33, 34, 3
5 and 36 are sequentially moved in a zigzag manner. Then, it is sent from the last pulley 36 to the drive pulley and circulated.

Cutting machine body 10 with a drive pulley attached
Is always pulled rearward by the tension applying device 13, so that a constant tension is always applied to the wire saw-3. As the cutting progresses, the cutting machine body retreats along the rail, and the weight case of the tension applying device descends. When the weight case has descended to the lower end of the ascending / descending stroke, wind it up with a winch. When the main body of the cutting machine has moved to the rear end, the main body of the cutting machine may be returned to the front part of the rail to continue the operation.

In the cutting apparatus 1, a detour pulley 31, 32,... Is provided on a frame 9 supporting a cutting machine main body 10, and the driving pulley 8 and the By circumventing the circulation path of the wire saw that circulates and moves with the object to be cut, the extra length can be absorbed and used as it is even if the wire saw is longer than actually required for cutting. For this reason, if a sufficiently long wire saw is facilitated, it is not necessary to cut or add the wire saw on site, and the work can be performed efficiently.
In addition, it is economical because expensive diamond wire saws are not wasted. The bypass pulley in the illustrated example is supported by the frames 9 and 40 so as to be within the forward and backward movement range of the cutting machine main body 10, so that it has a compact structure as a whole. Does not require a large space.

FIG. 6 shows a different embodiment. In this embodiment, detour pulleys 50 ,.
The wire saw 3 is circulated up and down. Detour in this example
The recycle pulley is indirect within the moving range of the cutting machine body.
, And at least one detour pulley is provided so as to be adjustable in position. Depending on the construction site, the space in the horizontal direction may be small, and a relatively large space may be left in the vertical direction. It is advantageous to provide it. In some cases, it is possible to adopt a detour in both the vertical direction and the horizontal direction, and it is also possible to provide an oblique detour.

As shown in FIG. 7, one or more detour pulleys 60 are pressed by an actuator 65 such as an air cylinder in a direction in which tension is applied to the wire saw-3. This is advantageous because the slack of the wire saw due to the progress of cutting can be effectively prevented, and the position of the bypass pulley need not be finely adjusted.

[0021]

As is apparent from the above description, the cutting device according to the present invention is provided with a bypass pulley for bypassing the wire saw in addition to the guide pulley originally required, so that the driving pulley and the object to be cut are provided. By using the pulley to appropriately detour the wire saw that circulates and cuts the object to be cut, the wire saw longer than the required length can be used as it is, and the wire saw can be used. Extra work such as separation and extension for length adjustment can be omitted. For this reason, the cutting work at the site where workability is poor is facilitated, and the wire saw is not wasted, so that it is economically superior.
Further, the bypass pulley is provided for moving the cutting machine body in the longitudinal direction.
It is supported by the frame so that it fits within the enclosure
In general, it is compact and handles installation, removal, transportation, etc.
Not only convenient but also to bypass the wire saw
Large space is not required, making it extremely practical
It became

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a wire saw.

FIG. 3 is a sectional view of a bypass pulley.

FIG. 4 is an explanatory diagram of a method of use.

FIG. 5 is a perspective view of a tension applying device.

FIG. 6 is a side view of a different embodiment.

FIG. 7 is an explanatory diagram of a main part of still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting device 2 Wire-saw machine 3 Wire-saw 8 Driving pulley 9 Frame 10 Cutting machine main body 11 Rail 13 Tension applying device 30 Detour device 31,32, ... Detour pulley

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B28D 1/08 B24B 27/06 E04G 23/08

Claims (3)

(57) [Claims] A cutting tool main body moving on a rail is provided with a drive pump.
Supporting the over Li, wound on the driving pulley an endless Waiyaso -
Is wrapped around the workpiece with the guide pulley as a guide and circulated.
While moving the cutting machine body along the rails.
In the cutting device for cutting an object to be cut while applying tension to the wire saw by moving the wire saw, a mounting frame fixed to the rail is provided near the rail, and the wire saw is guided in a predetermined direction. Apart from the guide pulley, setting only a plurality of detour pulley spaced apart from each other on the mounting frame, by passing over the wire saw between the plurality of detour pulley, said wire saw at the installation position near the rail Extra length can be absorbed
A cutting device characterized by the ability to function . 2. The cutting device according to claim 1, wherein the bypass pulley is attached to the frame so as to be position-adjustable. 3. As a tension applying device, one end of a suspended wire rope is connected to a cutting machine main body via a pulley provided behind the rail, and the other end is connected to the other end. A winch for winding the wire is mounted, and the winch is stored in a weight case capable of storing an additional weight, and the weight of the winch and the weight case is used as a traction force of the cutting machine body. The cutting device according to claim 1, further comprising a weight-type tension applying device to be used.