JPH0632006U - Guide device for wire saw - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a guide device capable of pulling out a wire saw in an arbitrary direction. [Structure] The guide device includes a support frame 10, a pair of main pulleys 12 and 13, and five auxiliary pulleys 15 to 19. The support frame 10 includes a base plate 10a fixed to an object to be cut, a horizontal frame portion 10c, and a vertical frame portion.
It has 10d and a fixed disk portion 10e. Auxiliary pulley
16 to 19 are rotatably mounted on the central axis of the horizontal frame portion 10c. The auxiliary pulley 15 has a vertical frame portion 10d.
Is rotatably attached to the tip side of the. Main pulley 12,1
3 is rotatably supported by a pair of rotating plates 20 and 21 arranged on the upper and lower surfaces of the fixed disc portion 10e. Rotating plate 20,21
Is provided with a rotating shaft 22 that is in contact with the upper and lower surfaces of the fixed disk portion 10e and penetrates the center of rotation. A pair of semicircular guide grooves are formed on the outer circumference of the fixed disc portion 10e. The rotating plates 20 and 21 are connected by guide pins 23 which are respectively inserted in these guide grooves.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a guide device used in a wire saw method adopted for cutting concrete structures and the like.

[0002]

[Prior art]

 The wire saw method is a method of cutting a reinforced concrete structure or stone material using a wire saw in which beads on which granular diamond is electrodeposited or sintered are attached to a wire. For example, Japanese Patent Publication No. 3-53426. The structure is disclosed in Japanese Examined Patent Publication No. 3-534727, etc., and the wire saw method disclosed in these publications has the advantage that it can cut with high efficiency and has little effect on the surrounding environment. There is.

By the way, in this type of construction method, for example, when a columnar object is to be cut, it is constructed by winding a wire saw around the object to be cut and frictionally running it with a drive pulley. However, the wire saw is wound endlessly between the object to be cut and the drive pulley, and a guide pulley that changes the traveling direction is installed at an appropriate place to guide the wire saw in a predetermined direction, and the drive pulley is moved backward. A certain tension is introduced by means such as moving.

An example of a guide device used for such an application is disclosed in Japanese Utility Model Publication No. 4-13127. The guide device disclosed in this publication includes a support frame fixed to a frame, a pair of main pulleys rotatably supported by the support frame, and a direction in which a rotation surface is orthogonal to the main pulley. The guide and auxiliary pulleys are arranged in pairs, and the guide pulley annular groove is arranged on an extension of the inner tangent line of the opposing main pulley annular groove.

With the guide device configured as described above, the wire saw can be turned from the horizontal direction to the vertical direction, but there is also a technical problem described below.

[0006]

[Issues to be solved by the device]

 That is, in the wire saw method described above, construction is performed under various conditions.For example, if there is an obstacle in the vicinity of the body to be cut, simply changing the direction of the wire saw from horizontal to Since it may be difficult to cut the target object, it was desired to develop a device that can pull out the wire saw in any direction.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a guide device that can pull out a wire saw in an arbitrary direction.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a wire saw, which is wound endlessly between a cutting object and a drive pulley, and which cuts the cutting object by circulating running under a predetermined tension state. In a guide device that guides the wire saw in the direction of, the support frame fixed to the cutting target and the support frame are pivotally attached to the support frame so that the rotation surfaces are on the same plane, and the wire saw is guided to the drive pulley side. A pair of main pulleys, and at least a pair of auxiliary pulleys that are pivotally attached to the support frame so that their rotation surfaces are on the same plane and that guide the wire saw to the object to be cut. Is rotatably arranged.

The main pulley is rotatably supported by the center portions of a pair of rotating plates disposed on the upper and lower surfaces of the fixed disc portion of the support frame, and the center line of the annular groove of these main pulleys. The ring-shaped groove of the auxiliary pulley can be arranged on the vertical extension line of the.

[0010]

[Action]

 According to the above configuration guide device, since the main pulley for guiding the wire saw to the drive pulley side is rotatably arranged, the wire saw wound around the object to be cut can be rotated in any direction by rotating the main pulley. Can be pulled out. Further, according to the configuration of claim 2, when the main pulley is rotated, it is possible to prevent the wire saw from being removed from the wire saw hooked in the annular groove of the pulley.

[0011]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of a guide device for a wire saw according to the present invention. The wire saw guide device shown in the figure includes a support frame 10, a pair of main pulleys 12 and 13, and five auxiliary pulleys 15, 16, 17, 18, and 19.

In this embodiment, the support frame 10 includes a base plate 10 a fixed to an object to be cut, a horizontal frame portion 10 c fixed to the base plate 10 a via a reinforcing stay 10 b, and a horizontal frame portion 10 c. The vertical frame portion 10d is fixed so as to be orthogonal to the vertical frame portion 10d, and the fixed disk portion 10e is disposed on the side of the vertical frame portion 10d.

Of the five auxiliary pulleys 15 to 19, four are rotatably supported by pins so that their rotation centers are located on the center axis of the horizontal frame portion 10c. The remaining one auxiliary pulley 15 is also rotatably attached by a pin to the tip side of the vertical frame portion 10d so as to be rotatable. On the other hand, the main pulleys 12 and 13 are rotatably supported by a pair of rotary plates 20 and 21 arranged on the upper and lower surfaces of the fixed disk portion 10e of the support frame 10, respectively.

FIG. 2 shows a top view of one main pulley 12 attached to the rotary plate 20. In this embodiment, the rotary plates 20 and 21 are in contact with the upper and lower surfaces of the fixed disc portion 10e, and the rotary shaft 22 is provided at the center of rotation so as to penetrate these three plates. In addition, a pair of semicircular guide grooves 10f are formed on the outer periphery of the fixed disc portion 10e. The rotary plates 20 and 21 are connected by guide pins 23 which penetrate the rotary plates 20 and 21 and are inserted into the guide grooves 10f.

The main pulleys 12 and 13 are respectively provided on support stays 24 and 25 which are erected on the upper surfaces of the rotary plates 20 and 21, respectively, and the extension lines of the rotation centers are aligned with the center points of the rotary plates 20 and 21. , Rotatably pinned. In this embodiment, the relationship between the main pulleys 12 and 13 ring-shaped grooves and the ring 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 ring-shaped grooves of the main pulleys 12 and 13 are located on the same straight line, and on the line (l) that is an extension of this straight line, the center lines of the ring-shaped grooves of the auxiliary pulleys 15 and 16 are formed. The inner bottom is located. FIG. 3 shows a usage state of the guide device configured as described above. In the usage state shown in the figure, the gate device of the present invention is used when horizontally cutting the skeleton a to be cut. In use, first, the base plate 10a of the support frame 10 is set to the predetermined skeleton a. It is fixed in position by an anchor.

When the support frame 10 is fixed, the wire saw b is wound around the pulleys 12, 13, 15 to 19. When winding the wire saw b, first insert the wire saw b into the ring-shaped groove of the one main pulley 12, then insert it into each ring-shaped groove of the auxiliary pulleys 15, 17, 18 and wind it around the outer periphery of the body a. , Through the annular grooves of the auxiliary pulleys 19 and 16, and finally into the annular groove of the main pulley 13.

Both ends of the wire saw b guided by the main pulleys 12 and 13 are wound around the outer periphery of the drive pulley of the drive device (not shown), and are installed between the cutting target frame a and the drive pulley in an endless state. Then, the vehicle travels with a predetermined tension introduced, which causes a frictional force to be generated in the portion where the wire saw b and the body a are in contact with each other, and the body a is cut by this frictional force. Become.

In such a cutting operation, in the guide device of the present invention, since the main pulleys 12 and 13 for guiding the wire saw a to the drive pulley side are configured to be rotatable, the main pulleys 12 and 13 are supported. By rotating the rotating plates 20 and 21, the direction of the rotation surface of the main pulleys 12 and 13 can be arbitrarily changed, and thus the pulling direction of the wire saw b can be arbitrarily selected and the drive The degree of freedom of the pulley installation position is increased.

Further, in the guide device of this embodiment, since the bottoms of the annular grooves of the auxiliary pulleys 15 and 16 are arranged on the vertical extension lines of the center lines of the annular grooves of the main pulleys 12 and 13, the main pulleys are arranged. When 12 and 13 are rotated via the rotary plates 20 and 21, it is possible to prevent the wire saw b from being detached from the ring grooves of the pulleys 12, 13, 15 and 16.

In the above example of use, the guide device of the present invention is used for the horizontal cutting of the object a, but the use of the guide device of the present invention is not limited to this, and the guide device may be used vertically or It can also be used for oblique cutting. In addition, the number of auxiliary pulleys for guiding the wire saw b to the side of the cutting object a is not necessarily required, and for example, the auxiliary pulleys 18 and 19 may be deleted or the auxiliary pulleys 17, 18 and 19 may be omitted. It is also possible to omit it and configure with two auxiliary pulleys 15 and 16.

[0022]

[Effect of device]

 As described above in detail in the embodiments, in the wire saw guide device according to the present invention, the main pulley that guides the wire saw to the drive pulley side is configured to be rotatable, so that the position where the drive pulley is installed is The degree of freedom is increased and the construction efficiency can be expected to improve.

[Brief description of 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.

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

[Explanation of symbols]

 10 Support Frame 10a Base Plate 10e Fixed Disc Part 12,13 Main Pulley 15,16 Auxiliary Pulley 20,21 Rotating Plate

Claims (2)

[Scope of utility model registration request] 1. A guide device which guides a wire saw, which is wound endlessly between a cutting object and a drive pulley, and which circulates in a predetermined tension state to cut the cutting object in a predetermined direction. A supporting frame fixed to the object to be cut, a pair of main pulleys pivotally attached to the supporting frame so that rotation surfaces thereof are on the same plane, and guiding the wire saw to the drive pulley side, the supporting frame And a pair of auxiliary pulleys that are pivotally attached to each other so that their rotation surfaces are on the same plane, and that guide the wire saw to the cutting object side, and the main pulley is rotatably disposed. Guide device for wire saw. 2. The main pulley is rotatably supported at the central portions of a pair of rotary plates arranged on the upper and lower surfaces of the fixed disc portion of the support frame, and the main groove has a ring-shaped groove. 2. The ring-shaped groove of the auxiliary pulley is arranged on the vertical extension line of the center line.
Guide device for the wire saw described.