JP2006123331A - Wire saw cutting device, cutting method by wire saw and self-propelled machine having cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device which can movably install a wire saw driving device in a predetermined place by free movement of the boom arm of a self-propelled machine even if the neighborhood of an object to be cut, such as concrete, is too narrow a place for the conventional cutting device to be installed; and to provide a cutting device having a structure which allows the work by exchanging as an attachment one driving source which is suitable in the case where a wire saw type and a disc type cutting machine are required alternately. <P>SOLUTION: Presupposing the wire saw cutting device in which the wire saw driving device is attached to the arm 52 working side of the self-propelled machine equipped with the boom arm which is movable turnably, up and down, left and right and before and behind, and the like, the wire saw cutting device is the one which is fitted with a base that is removably installed with the wire saw driving device in the arm tip, in which the base and the arm tip are installed to be orthogonally or at any angle turnable and rotatable to the axial center, and in which the plane of the rotation of the driving sheave of the wire saw of the wire saw driving device is made changeable orthogonally or arbitrarily. Further, the cutting device is the one in which the disc type cutting device and the wire saw type cutting device can be exchanged. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wire saw cutting device and method suitable for use when cutting a concrete structure or the like using a wire saw, and a self-propelled machine with a cutting device that combines a disc rotating saw and a wire saw.

It is common practice to cut concrete structures using a wire saw. An endless wire saw communicates between the drive source, guide pulley, and workpiece to be cut by friction, but the wire saw gradually loosens as it is cut. Conventionally, in order to eliminate the loosening amount, a guide sheave is used. A certain tension state is maintained by appropriately adjusting the positions of the heads and the like.
By the way, since the environment of a workpiece is not necessarily a flat place, there is a conventional structure in which a wire saw cutting device is mounted on a crawler device (Patent Document 1).

Such known devices are not so difficult to move even on uneven ground due to the crawler mechanism. The wire saw cutting device is configured to be movable with respect to the crawler device, thereby eliminating the loosening of the wire saw.

However, for example, in a place where the crawler device cannot be installed around the concrete work piece, if the crawler device must be installed at a far place or above each time, A lot of other guide sheaves must be installed in the wire saw. For this reason, there are disadvantages that it takes time to set up and the cost is bulky.

By the way, in the conventional wire saw cutting apparatus, the cutting edge of the wire saw gradually narrows at the end of cutting, and a bending stress is suddenly generated on the wire saw. Therefore, excessive stress is applied to the wire saw, and in the worst case, there is a fear of cutting. Therefore, conventionally, as a measure for mitigating such stress, means such as attaching a guide sheave etc. before and after the cutting portion of the wire saw and guiding the wire saw with the guide sheave so as to prevent sudden bending are taken. .

However, such a means is possible if there is a sufficient space at the cutting site, but has a drawback that it is difficult to realize when there is no space.

By the way, many large and small secondary products need to be cut according to the size of the site at construction sites constructed using concrete secondary products. If a wire saw cutter is used even for a small one, an installation place is required, and the efficiency of the cutting operation is rather deteriorated. Therefore, a disk cutting machine is required. Conventionally, however, the wire saw type and the disc type have been provided with their own drive sources, so it is impossible to cope with the case where both the wire saw and the disc are required to be cut at the site. It is also necessary to excavate earth and sand at the site. As described above, in order to introduce a large number of dedicated machines in a small-scale site, there are problems such as a large budget and a lack of space.

JP-A-7-189502

In view of this point, the present invention attaches a wire saw driving device to the working side of a self-propelled machine equipped with a boom arm that can be swung up and down, left and right, such as a backhoe equipped with a crawler device. Proposal is made of a cutting device in which the drive device can be movably installed at a predetermined location by free movement of the arm of the device of the present invention even in a narrow place where the conventional cutting device cannot be installed near the work piece. This is the main issue.

The present invention also proposes a cutting apparatus having a structure that can be used for work by replacing one drive source suitable as an attachment for use when a wire saw type and a disk type cutting machine are alternately required.

  The present invention is a wire saw cutting device characterized in that a wire saw driving device is attached to an arm working end side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right.

The present invention is a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be able to rotate and rotate with respect to the axis at right angles or at an arbitrary angle. A wire saw cutting device characterized in that the rotation surface can be changed orthogonally and / or arbitrarily.

The present invention is a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be rotatable with respect to the axis at right angles and / or at an arbitrary angle. The wire saw cutting device is characterized in that the rotation surface can be changed orthogonally and / or arbitrarily, a hydraulic motor is used as a drive source of the wire saw drive device, and the hydraulic source is taken out from the self-propelled machine.

  The present invention is also a method of attaching a wire saw driving device to an arm working end side of a self-propelled machine equipped with a boom arm capable of turning up, down, left and right, and cutting a workpiece with a wire saw.

The present invention further includes a method of attaching a wire saw driving device to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right, and cutting with a wire saw,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be able to rotate and rotate with respect to the axis at right angles or at an arbitrary angle. Using a wire saw hydraulic drive device whose rotation plane can be changed orthogonally and / or arbitrarily, the wire saw is driven at an arbitrary angle according to the angle of the drive sheave, and when the wire saw is loosened, the boom arm is removed from the driver's seat The wire saw cutting method is characterized in that the loosening of the wire saw is eliminated by a slight operation and hydraulic control.

The present invention further includes a wire saw cutting device and a disc cutting device that are interchangeably connected to the arm working side of a self-propelled machine equipped with a boom arm or the like that is capable of turning up, down, left and right. With a cutting device characterized in that the hydraulic motor in each cutting device is rotationally driven by a hydraulic drive source, and rotation control and boom arm operation are also performed from the driver's seat in the self-propelled machine It is a self-propelled machine.

  In the present invention, since the wire saw driving device is attached to the arm working end side of the self-propelled machine equipped with a boom arm capable of turning up and down, left and right, back and forth, the wire saw is attached to the wire saw driving device and is cut over the workpiece. Of course, the wire saw cutting device itself can be simplified without providing a wire saw driving source and a wire saw movement control unit, and can therefore be used as an attachment for a self-propelled machine, saving space.

The present invention is also a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm and the like capable of turning up, down, left and right.
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be rotatable with respect to the axis at right angles and / or at an arbitrary angle. Since the rotation plane can be changed orthogonally and / or arbitrarily
A wire saw can be attached to the wire saw drive device and cut over the workpiece, and the wire saw cutting device itself can be simplified without providing a wire saw drive source and a wire saw movement control unit. As well as saving space for storage, the wire saw drive device itself can change any angle with respect to the wire saw cutting surface, so that oblique cutting is possible and a flexible cutting device is provided. it can.

The present invention further includes a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm and the like capable of turning up, down, left and right.
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be rotatable with respect to the axis at right angles and / or at an arbitrary angle. Since the rotation surface can be changed orthogonally and / or arbitrarily, a hydraulic motor is used as the drive source of the wire saw drive device, and the hydraulic source is configured to be taken out from the self-propelled machine.
A wire saw can be attached to the wire saw drive device and cut over the workpiece, and the wire saw cutting device itself can be simplified without providing a wire saw drive source and a wire saw movement control unit. As well as saving space for storage, the wire saw drive device itself can change any angle with respect to the wire saw cutting surface, so that oblique cutting is possible and a flexible cutting device is provided. In addition, the use of hydraulic motors can reduce noise during construction due to low noise.

Since the present invention is further a method of cutting the object to be cut with a wire saw by attaching a wire saw driving device to the arm working end side of a self-propelled machine equipped with a boom arm or the like capable of turning up and down, left and right, back and forth,
For example, when a concrete pipe is buried in a culvert construction, if a modification of the mating surface occurs after the installation, the self-propelled machine will not be able to secure a space where a conventional concrete cutting device can be installed nearby. A self-propelled machine equipped with a cutting device at the tip of the boom arm can be installed at a flat and high position, and the boom arm can be lowered to the concrete pipe in the basement and the wire saw can be passed over, so it does not take time to set up It becomes possible to cut in a relatively short time.

The present invention further includes a method of attaching a wire saw driving device to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right, and cutting with a wire saw,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be able to rotate and rotate with respect to the axis at right angles or at an arbitrary angle. Using a wire saw hydraulic drive device whose rotation plane can be changed orthogonally and / or arbitrarily, the wire saw is driven at an arbitrary angle according to the angle of the drive sheave, and when the wire saw is loosened, the boom arm is removed from the driver's seat Since it was operated slightly to control the hydraulic pressure, the loosening of the wire saw was resolved.
For example, when embedding concrete pipes in a culvert construction, if there is a situation where the mating surface is modified after installation, even if it is not possible to secure a space where a conventional concrete cutting device can be installed nearby, A self-propelled machine equipped with a cutting device at the tip of the boom arm can be installed at a flat and high position, and the boom arm can be lowered to the concrete pipe in the basement and the wire saw can be handed over. The cutting surface can be cut in a relatively short time, and the optimal rotating surface can be secured by adjusting the rotating surface of the driving sheave. Therefore, the wear of the driving sheave and the wire saw can be reduced to avoid a decrease in driving torque. Can do.

The present invention further includes a wire saw cutting device and a disc cutting device that are interchangeably connected to the arm working side of a self-propelled machine equipped with a boom arm or the like that is capable of turning up, down, left and right. Since the hydraulic motor in each cutting device is rotationally driven by a hydraulic drive source, the rotation control and the operation of the boom arm are also performed from the driver seat in the self-propelled machine.
When cutting large and small concrete secondary products, a disk-type cutting device is attached to the self-propelled machine for cutting small concrete products, and a wire saw type cutting device is self-propelled for cutting large concrete products. By attaching to the machine, flexible response is possible. In addition, if a wire saw type cutting device and a disk type cutting device are provided, if one of the blades wears out or breaks due to an accident, the above cutting device is appropriately replaced and the work can be performed immediately without interruption. You can resume.

  FIGS. 1 and 2 are a plan view and a side view of an embodiment of the device of the present invention, where 10 indicates a backhoe bracket. The bracket 10 is provided with two support pin holes 11 drilled laterally so that the upper side coincides with the position of the pin mounting hole at the tip of the arm of a self-propelled machine such as a backhoe, and the lower side supports the wire saw driving device. The brackets 12 are connected to each other by screws 13.

Reference numeral 20 denotes a wire saw driving device, on which a hydraulic motor 22 as a driving motor, a hydraulic control valve 23, a pillow unit 25 for rotating and supporting a wire saw driving main guide sheave 24, and the like are mounted on a base 21.

As shown in FIG. 1, the lower side of the bracket 10 and the base 21 are screwed by screws 21a so that the base 20 side can rotate with respect to the shaft core with respect to the bracket 10 whose direction is fixed. For example, four holes on the circumference of 90 ° intervals or eight holes on the 45 ° interval can be set with screws so that they can be set as needed at appropriate angles. . The angle can be set to an arbitrary angle as required. Reference numeral 14 denotes a center bolt for connecting the bracket 10 and the base 20.

The hydraulic motor 22 is connected by piping from a hydraulic pump in the backhoe connected via the bracket 10 and is driven to rotate. The rotation control is performed by operating a valve provided in the driver's seat of the backhoe. The driving force of the hydraulic motor 22 is transmitted to the V-belt pulley attached to the rotating shaft 26 of the pillow unit 25 via the V-belt, and the main guide sheave 24 is fixed to the rotating shaft 26 and driven to rotate. A known wire saw in which diamond is fixed to a wire is wound around the main guide sheave 24, and the wire saw obtains a driving force by the rotational drive of the hydraulic motor 22, so that the workpiece can be cut.

The main guide sheave 24 is provided with a cover 27 to prevent danger. Similarly, a cover 28 is provided on the drive belt.

A support 31 for supporting the sub-guide sheave 30 of the wire saw is detachably extended at the tip of the base 20. A bearing rod 32 is provided at the tip of the column 31 so as to be orthogonal to each other, and a bearing 33 that rotatably supports the guide sheave 30 is provided at the tip of the bearing rod 32. The guide sheave 30 and the main guide sheep 24 are set so that both grooves are in a straight line. The intervals between the guide sheaves 30 are set so as to absorb vibrations when the wire saw is driven.

In the state shown in FIGS. 1 and 2, the rotating shaft 26 is supported horizontally, so that the sheave 24 is positioned vertically, and thus the wire saw 40 advances in a direction perpendicular to the work piece. It will be. In order to advance the workpiece in the horizontal direction, it is possible to remove the screw 21a, shift the base 20 by 90 degrees relative to the bracket 10, and retighten the screw 21a.

FIG. 3 is a view showing an example of use of the cutting apparatus of the present invention. Since the boom 51 and the arm 52 of the backhoe 50 are freely rotatable with respect to the spindle pin, a wire saw cutting device 70 provided at the tip of the arm is installed at an optimum position with respect to the workpiece 60 to be cut. The wire saw 40 is hung on 60, and the other side is hung on the main guide sheave 24 and the guide sheave 30. At that time, the boom 51 and the arm 52 of the backhoe 50 are set to protrude forward (position A in the figure), and the slack of the wire saw is eliminated. After completing the initial setting as described above, the operation is performed from the driver seat of the backhoe 50, the hydraulic motor 22 is rotationally driven, the wire saw 40 is transferred at a high speed, and the cutting is started. As the cutting progresses, the wire saw naturally sags against the workpiece 60 and the friction disappears. Therefore, the boom 51 and the arm 52 are slightly operated to eliminate the sag. As the wire saw 40 finally cuts at the end of cutting, the boom 51 and the arm 52 are further operated to pull the main guide sheave 24 toward the backhoe 50 (position B in the figure), and the vertical direction Can continue until the cutting is completed.

Accordingly, since the wire saw cutting is realized by the wire saw driving device provided at the arm tip position of the backhoe 50, even if the wire saw is bent suddenly at the end of the cutting and a cutting accident occurs, the operator can operate the driver seat of the backhoe 50. Because it is inside, the broken wire saw will not fly and cause direct injury to the operator.

Further, the cutting of the workpiece is completed by moving only the boom 51 and the arm 52 without moving the backhoe 50. If the cutting is not completed, the crawler is moved backward together with the boom 51 and the arm 52 in the driver's seat. The boom saw and the arm 52 are returned to their original positions (position A in the figure), so that the wire saw cutting can be continued again. At that time, even if the travel path of the backhoe 50 is unstable, there is no hindrance to the travel of the crawler, so that stable wire saw cutting can be realized.

Next, as shown in FIG. 4, when the workpiece to be cut is below the ground (or below the reference position) using a backhoe, a backhoe 50 is installed on a flat portion on the ground. Then, the boom 51 and the arm 52 can be extended to the lower side where the workpiece 60 is located, and a wire saw drive cutting device can be appropriately installed to realize cutting. When the wire saw 40 is cut and advanced, the wire saw 40 naturally becomes slack, so that the slack of the wire saw 40 can be eliminated by operating the boom 51 and arm 52 from the driver's seat and gradually moving them upward. In this case, the wire saw driven cutting device gradually moves upward, but no trouble occurs because of the vertical cutting.

In this case, the sub-guide sheave is removed, and the guide sheave 35 having the same function is fixed in the vicinity of the workpiece, so that the wire saw 40 can be moved smoothly.

Note that the inclined surface can be cut by appropriately adjusting the position of the sub-guide sheave 35.

In addition, in the apparatus of the present invention, when the object to be cut is under a cliff and there is no space for installing a backhoe around, it is often impossible to install a conventional wire saw cutting machine in the vicinity. Even in this case, cutting can be realized by installing a backhoe on the flat part on the cliff, extending the boom and arm to the lower side where the object to be cut is located, and installing a wire saw driving cutting device. When the wire saw is cut and advanced, the wire saw naturally becomes slack, so that the slack of the wire saw can be eliminated by operating the boom and arm from the driver's seat and gradually moving them upward. In this case, the wire saw cutting device gradually moves upward, but no trouble occurs because of the vertical cutting.

Next, in the case of wire saw cutting in renovation / removal work of a concrete bridge, as shown in FIG. 5, the backhoe 50 is positioned on the river bed side, which is the lower side of the bridge, and the boom 51 and the arm 52 are placed above, ie overhead. Position and set the cutting device (eg C or D position in FIG. 3). When the wire saw is cut and loosened, the boom 51 and the arm 52 can be slightly operated to eliminate the slack. In this case, in this type of construction in the past, since a large scale scaffolding is assembled and special consideration is given to safety, the cost becomes enormous, but the adoption of the device of the present invention eliminates the need for a scaffold, The work of flattening the riverbed is no longer necessary, and there is no need to install rails as in the prior art, thus shortening the construction period.

The present invention includes concrete pipe cutting, concrete wall cutting, underground structure cutting, sewer pipe cutting, tunnel wall cutting, highway roadbed cutting, underwater concrete structure cutting, bridge and viaduct cutting, etc. Can be adopted.

The top view which shows an example of this invention apparatus Side view showing an example of the device of the present invention Outline diagram showing an example of the method of the present invention Outline diagram showing another example of the method apparatus of the present invention Outline diagram showing another example of the method apparatus of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bracket 22 Hydraulic motor 24 Main guide sheave 40 Wire saw 50 Backhoe 51 Boom 52 Arm 60 Workpiece

Claims (6)

A wire saw cutting device characterized in that a wire saw driving device is attached to an arm working end side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right. In a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be able to rotate and rotate with respect to the axis at right angles or at an arbitrary angle. A wire saw cutting device characterized in that the rotation surface can be changed orthogonally and / or arbitrarily. In a wire saw cutting device in which a wire saw driving device is attached to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be rotatable with respect to the axis at right angles and / or at an arbitrary angle. A wire saw cutting device characterized in that a rotation surface can be changed orthogonally and / or arbitrarily, a hydraulic motor is used as a drive source of a wire saw drive device, and the hydraulic source is taken out from the self-propelled machine. A method in which a wire saw driving device is attached to an arm working end side of a self-propelled machine equipped with a boom arm or the like capable of turning up, down, left and right, and a workpiece is cut with a wire saw. In a method of attaching a wire saw driving device to the arm working side of a self-propelled machine equipped with a boom arm etc. capable of turning up and down, left and right, and cutting with a wire saw,
A base with a wire saw drive device attached to the arm tip is removably attached, and the base and the arm tip are provided so as to be able to rotate and rotate with respect to the axis at right angles or at an arbitrary angle. Using a wire saw hydraulic drive device whose rotation plane can be changed orthogonally and / or arbitrarily, the wire saw is driven at an arbitrary angle according to the angle of the drive sheave, and when the wire saw is loosened, the boom arm is removed from the driver's seat A wire saw cutting method characterized in that the loosening of the wire saw is eliminated by a slight operation and hydraulic control. A wire saw cutting device and a disc cutting device are interchangeably connected to the arm working side of a self-propelled machine equipped with a boom arm or the like capable of turning up and down, left and right, and forward by a hydraulic drive source in the self-propelled machine, respectively. A self-propelled machine with a cutting device, wherein the hydraulic motor in the cutting device is driven to rotate, and the rotation control and the operation of the boom arm are also performed from the driver's seat in the self-propelled machine.

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