JP2534441Y2 - Guide device for wire saw - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device used in a wire saw method employed for cutting concrete structures and the like.

[0002]

2. Description of the Related Art The wire saw method is a method of cutting a reinforced concrete structure or a stone material using a wire saw in which beads on which granular diamond is electrodeposited or sintered are attached to a wire. 53426
Patent Documents, Japanese Patent Publication No. 3-53427, and the like disclose the configuration. The wire saw method disclosed in these publications has an advantage that cutting can be performed with high efficiency and the influence on the surrounding environment is small. is there.

[0003] By the way, in this type of construction method, for example, when cutting a columnar object, a wire saw is wound around the object to be cut, and the object is frictionally run with a drive pulley. The wire saw wound endlessly between the object to be cut and the driving pulley is guided in a predetermined direction by installing a guide pulley that changes the traveling direction at an appropriate position, and moves the driving pulley backward. By such means, a predetermined tension is introduced.

[0004] An example of a guide device used for such an application is disclosed in Japanese Utility Model Publication No. 4-1127. The guide device disclosed in this publication includes a support frame fixed to a body, a pair of main pulleys rotatably supported by the support frame, and a rotation surface orthogonal to the main pulley. There is a pair of guide and auxiliary pulleys arranged, and the annular groove of the guide pulley is arranged on an extension of an inner tangent to the annular groove of the main pulley facing the main pulley.

[0005] In the guide device configured as described above, the direction of the wire saw can be changed from the horizontal direction to the vertical direction, but there are also technical problems described below.

[0006]

[Problems to be Solved by the Invention] That is, in the wire sawing method described above, construction is performed under various conditions. For example, when there is an obstacle near the frame to be cut, the wire saw is simply moved from a horizontal position. It may be difficult to cut the object only by changing the direction vertically, and it has been desired to develop a device that can pull out the wire saw in an arbitrary direction.

The present invention has been made in view of such a conventional problem, and an object of the invention is to provide a guide device capable of pulling out a wire saw in an arbitrary direction.

[0008]

In order to achieve the above-mentioned object, the present invention provides a cutting method in which a cutting object is wound endlessly between an object to be cut and a driving pulley and circulated and driven under a predetermined tension. in the guide device for guiding a wire saw for cutting the object in a predetermined direction, a support frame which is fixed to the cutting object, a pair of main pulleys for guiding the pre-Symbol wire saw to the drive pulley side, the main pulley
-Is installed facing the outside so that the
On the same plane substantially coincident with the planned cutting line of the cutting object
And at least a pair of auxiliary pulleys arranged on the
The support frame rotates one of the auxiliary pulleys automatically.
A horizontal frame portion that supports the
The auxiliary pulley extends in the direction perpendicular to
Between the vertical frame part that supports rotatably and the auxiliary pulley
The center is located on a straight line connecting the annular grooves of
Having a disk surface orthogonal to the rotation surface of the
Rotating plate support play with both ends supported between vertical frame parts
And concentrically above and below the disk surface of the rotating plate support plate.
And supported to rotate in the same direction at the same time
A pair of rotating plates, and a pair of standing plates respectively provided on the rotating plates.
The main pulley is connected to the auxiliary pulley.
The rotation center is located on a straight line connecting the
And turn the support stay so that the rotation surface is flush with the support stay.
Rolling freely is supported, wound the said word on the drive pulleys
Pass one end of the earsaw through one inside of the main pulley
Around the outside of one of the auxiliary pulleys,
The other end wound around the cutting object is the auxiliary pulley.
Through the other outside of the main pulley
And return to the drive pulley.
Characterized in that that.

[0009]

According to the above configuration guide device, the support frame is provided.
Has a disk surface perpendicular to the rotation surface of the auxiliary pulley,
Rotating plate support with both ends supported between flat and vertical frame parts
Holding plate above and below the disk surface of the rotating plate support plate.
Centered and simultaneously supported in the same direction to rotate
Pair of rotating plates and a pair of standing
The main pulley and the auxiliary pulley ring
The rotation center is located on the straight line connecting the
Are rotatably supported by the support stay so that
When the rotating plate is rotated, the main pulley
Is changed. The rotation surface of the main pulley is different
Then, pass through the inside of the main pulley and along its rotating surface
Pull-out direction of the wire saw pulled out to the drive pulley side
Has been changed, and as a result,
Will be possible.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of the guide device for a wire saw according to the present invention. The guide device for a wire saw shown in FIG. 1 has a support frame 10, a pair of main pulleys 12, 13 and five auxiliary pulleys 15, 16, 17, 18, and 19.

In this embodiment, the support frame 10 includes a base plate 10a fixed to an object to be cut and a base plate 10a.
a, a vertical frame 10d fixed to the horizontal frame 10c perpendicular to the horizontal frame 10c, and a vertical frame 10d fixed to the horizontal frame 10c via the reinforcing stay 10b.
d is located on the side and both ends are horizontal and vertical frame parts
Rotating plate support plate 1 fixedly supported by 10c and 10d
0e. Rotating plate support plate 10e is horizontal
And rotatably supported by the vertical frame portions 10c and 10e.
Times of auxiliary pulleys 15, 16, 17, 18, 19
The auxiliary pulleys 15 and 1 extend in a direction orthogonal to the turning surface.
Has a disk surface whose center is located on the straight line connecting the annular grooves of No. 6
doing.

Of the five auxiliary pulleys 15 to 19, four are rotatably mounted by pins so that their respective rotation centers are located on the central axis of the horizontal frame portion 10c. Further, the remaining one auxiliary pulley 15 is similarly rotatably connected to the distal end side of the vertical frame portion 10d by a pin. On the other hand, the main pulleys 12 and 13 are rotatably supported by a pair of rotary plates 20 and 21 disposed on upper and lower surfaces of a rotary plate support plate 10e of the support frame 10, respectively. According to such an arrangement state, a pair of main
With a pair of auxiliary pulleys sandwiching the pulleys 12 and 13,
Lees 15 and 16 face outside the main pulleys 12 and 13
It is arranged so that.

FIG. 2 shows a top view of one of the main pulleys 12 attached to the rotating plate 20. In this embodiment, the rotating plates 20 and 21 are the rotating plate supporting plates 10e.
Is in contact with the upper and lower surfaces, and the rotary shaft 22 passing through these three plates are provided in the rotational center, these 3 members same
It is placed on the heart. Circle of rotating plate support plate 10e
The board surface is perpendicular to the rotation surface of the auxiliary pulleys 15 to 19.
Orientation . A pair of semicircular guide grooves 10f are formed in the outer periphery of the rotating plate support plate 10e . And the rotating plates 20 and 21 are each
And are connected by guide pins 23 respectively inserted into these guide grooves 10f.

The main pulleys 12 and 13 are respectively supported by support stays 24 and 25 erected on the upper surfaces of the rotating plates 20 and 21, respectively.
The rotation center is rotatably connected with a pin so that the extension line of the rotation center coincides with the rotation center point of the rotating plates 20 and 21. In this embodiment, the relationship between the annular grooves of the main pulleys 12 and 13 and the annular grooves of the auxiliary pulleys 15 and 16 on which the wire saw is hung next to the main pulleys 12 and 13 is set as follows.

The center lines of the annular grooves of the main pulleys 12 and 13 are located on the same straight line, and the inner bottoms of the annular grooves of the auxiliary pulleys 15 and 16 are on a line (l) obtained by extending this straight line. positioned. That is, the auxiliary pulley 15,
Of the main pulleys 12 and 13 on a straight line connecting between the 16 annular grooves.
Rotation where the rotation center is located and rotates simultaneously in the same direction
The rotation centers of the plates 20 and 21 are set. FIG. 3 shows a use state of the guide device thus configured.
The use state shown in the figure is a case where the guide device of the present invention is used for horizontally cutting the cutting object a . In use, first, the base plate 10a of the support frame 10 is used.
Is fixed to a predetermined position of the cutting object a by an anchor or the like. At this time, the auxiliary pulleys 15 to 19 are fixed.
The turning surface and the line to be cut of the object to be cut a are almost positioned.
It is performed.

When the support frame 10 is fixed, the wire saw b is wound around each of the pulleys 12, 13, 15 to 19. When winding the wire saw b, first, the wire saw b is passed through the inside of one main pulley 12, the wire saw b is inserted into the annular groove, and then the auxiliary pulley 15 is passed.
After being inserted into each annular groove from the inside of the auxiliary pulleys 17 and 18 to the outside and wound around the outer periphery of the cutting object a , the inside of the auxiliary pulley 16 is inserted from the outside of the auxiliary pulley 19 .
Side, and finally into the annular groove of the main pulley 13 to be drawn out from the inside.

Both ends of the wire saw b guided by the main pulleys 12 and 13 are wound around the outer periphery of a driving pulley of a driving device (not shown ), and are installed endlessly between the cutting object a and the driving pulley. Then, the vehicle is driven in a state where a predetermined tension is introduced.
A frictional force is generated in a portion in contact with the object a, and the object to be cut a is cut by the frictional force.

In such a cutting operation, in the guide device of the present invention, the support frame 10 is
It has a disk surface that is perpendicular to the rotation surfaces of 5, 16 and is horizontal and
Times the vertical frame portion 10c, at both ends between 10d supported
Rolling plate support plate 10e and rotating plate support plate 10
e is arranged concentrically above and below the disk surface and simultaneously in the same direction.
A pair of rotating plates 20 and 21 supported to rotate,
A pair of support stays erected on the rotating plates 20 and 21 respectively.
-24, 25 and assist the main pulleys 12, 13
The center of rotation is on the straight line connecting the annular grooves of the pulleys 15 and 16.
Support stage so that the rotating surface is
-24 and 25 are rotatably supported, so the rotating plate
By rotating 20, 21 the main pulleys 12, 13
The direction of the turning surface is changed. Rotation of main pulleys 12 and 13
If the surface is different, it passes through the inside of the main pulleys 12 and 13 and
Drawn out to the drive pulley side along the rotating surface of
The drawing direction of the saw b is changed. Therefore, since the direction in which the wire saw b is pulled out can be arbitrarily selected, the degree of freedom of the installation position of the drive pulley is increased.

Further, in the guide device of the present embodiment, the bottoms of the annular grooves of the auxiliary pulleys 15 and 16 are arranged on an extension of the center line of the annular grooves of the main pulleys 12 and 13 in the vertical direction. When the pulleys 12, 13 are rotated via the rotary plates 20, 21, the pulleys 12, 13, 1
The wire saw b hung between the 5, 16 ring-shaped grooves can be prevented from coming off.

In the above example, the guide device of the present invention is used for horizontal cutting of the object a.
The use of the guide device of the present invention is not limited to this, and can be used for vertical or oblique cutting. In addition, the number of auxiliary pulleys for guiding the wire saw b to the object a to be cut is not necessarily five, and
For example, the auxiliary pulleys 18 and 19 may be deleted, or the auxiliary pulleys 17, 18 and 19 may be deleted and two auxiliary pulleys 15 and 16 may be used.

[0021]

[Effect of the Invention] As described above in detail in the embodiment,
In wire saw guide device according to the present invention, the degree of freedom of the installation location of the drive <br/> dynamic pulley is increased, it is expected to improve the construction efficiency.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a wire saw guide device according to the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a plan view of the use state of the guide device of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 Support frame 10a Base plate 10e Rotary plate support plate 12,13 Main pulley 15,16 Auxiliary pulley 20,21 Rotary plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A guide device for guiding a wire saw, which is wound endlessly between an object to be cut and a drive pulley, and circulates and runs under a predetermined tension state in a predetermined direction, in a predetermined direction. , facing installation and supporting frame fixed to the cutting object, a pair of main pulleys for guiding the pre-Symbol wire saw to the drive pulley side to the outer side so as to sandwich the main pulley
The rotation surface substantially coincides with the cutting line of the object to be cut.
At least one pair of auxiliary pulleys arranged on the same plane , wherein the support frame rotates one of the auxiliary pulleys automatically.
A horizontal frame portion which is supported at the current position, and which extends in a direction orthogonal to the horizontal frame portion;
A vertical frame that rotatably supports the other auxiliary pulley
And the center is located on a straight line connecting between the annular grooves between the auxiliary pulleys.
And has a disk surface orthogonal to the rotation surface of the auxiliary pulley.
And both ends are supported between the horizontal and vertical frame portions.
Rotating plate support plate, and arranged concentrically above and below the disk surface of the rotating plate support plate
And a pair of supported at the same time rotate in the same direction
A rotating plate, and a pair of support stays erected on the rotating plate, respectively.
The main pulley is connected directly between the annular grooves of the auxiliary pulley.
The rotation center is located on the line and the rotation surface is coplanar.
So as to be rotatably supported by the support stay, and one end of the wire saw wound around the drive pulley.
The auxiliary pulley passes through one inside of the main pulley
Wrap around the outside of one side of the
Pass the hooked other end through the other outside of the auxiliary pulley.
And wound around the other side of the main pulley in order.
A guide device for a wire saw, wherein the guide device is wound so as to return to the driving pulley .