JP3079891U - Pulley suspension for wire sawing - Google Patents

Abstract

(57) [Summary] [Problem] To provide a pulling device for wire sawing in which a wire saw can safely operate without interference even if a main pulley and a cutting position are in any relationship. SOLUTION: A pair of horizontal pulleys is provided on a pulley base body fixed to a concrete structure to be cut, a pair of vertical pulleys whose rotation surface is set on a surface orthogonal to the rotation surface of the horizontal pulley, and rotation of the vertical pulley. An auxiliary pulley that can support the distance from the horizontal pulley rotation surface to some extent freely on the same rotation surface as the surface, the vertical pulley has a pair of horizontal pulleys, outer peripheral edges of which are arranged close to each other, and the auxiliary pulley has a pair of rotation pulleys. It is located approximately in the middle of the vertical pulley and is pivotally connected to one of a plurality of mounting holes formed in a column which is detachably installed on the side opposite to the horizontal pulley.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an endless wire saw guide pulley suspension device for cutting an object to be cut with an endless wire saw such as when partially cutting a concrete structure.

[0002]

[Prior art]

 In this type of wire saw conventionally known, the guide pulleys of the endless wire saw are all fixed. Therefore, depending on the cutting position, the two reciprocating wire saws may sag or shake and interfere with each other. As a result, there is a risk that the wire saw may break.

[0003]

[Problems to be solved by the invention]

 It is an object of the present invention to eliminate the above-mentioned conventional drawbacks and to provide a device in which a wire saw can safely operate without any interference between a main pulley and a cutting position.

[0004]

[Means for Solving the Problems]

 The means of the present invention are as follows.

[0005] A pair of horizontal pulleys on a pulley base body fixed to a concrete structure to be cut, a pair of vertical pulleys whose rotation surface is set on a surface orthogonal to the rotation surface of the horizontal pulley, and a rotation surface of the vertical pulley An auxiliary pulley capable of freely supporting the distance from the horizontal pulley rotation surface to a certain extent on the same rotation surface as that of the vertical pulley. It is located approximately at the center of the vertical pulley, and is pivotally connected to one of a plurality of mounting holes formed in a column that can be set apart from the horizontal pulley.

[0006]

[Embodiment of the invention]

 A specific example of the pulling suspension device for wire sawing according to the present invention will be described with reference to the drawings. 1 is a pulley base main body, 2 and 3 are horizontal pulleys supported on the left and right sides of the base main body 1, and 4 and 5 are vertical supports supported on the base main body 1 by axes 8 and 9 at right angles to the axes 6 and 7 of the horizontal pulleys 2 and 3. Pulley. Reference numeral 10 denotes an auxiliary pulley, and a shaft 11 of the auxiliary pulley is mounted on one of a plurality of mounting holes 13 formed in a column 12 suspended from the base body 1. Therefore, when the shaft 11 of the auxiliary pulley 10 is inserted into another mounting hole 13, the position of the wire saw in contact with the auxiliary pulley changes. From the vertical pulley 5, it goes around the concrete to be cut via the horizontal pulley 3, returns to the horizontal pulley 2, passes through the vertical pulley 4, and finally returns to the main pulley 15 via the vertical auxiliary pulley 10. The auxiliary pulley 10 is located between the vertical pulley 4 and the main pulley 15 and if its mounting position is changed, the distance between the wire saw 16 passing between the vertical pulley 4 and the main pulley 15 and the distance between the wire saw passing through the vertical pulley 5 and the main pulley 15 becomes as described above. In this way, it can be adjusted by the pivotal position of the auxiliary pulley.

From the above, one end of the endless wire saw from the main pulley 15 of the driving device installed on the side of the concrete structure passes through the inside of one of the vertical pulleys, and is arranged close to the vertical pulley. The wire saw is wound around the concrete to be cut around one outer periphery of the horizontal pulley, and the wire saw that has passed around the concrete is moved from the other outer periphery of the horizontal pulley to the other of the vertical pulleys arranged close to this horizontal pulley. The auxiliary pulley can be wound around the outer periphery of the auxiliary pulley on the opposite side to the one vertical pulley and returned to the main pulley 15.

[0008]

[Effect of the invention]

 According to the present invention, no matter what the relationship between the position of the main pulley of the drive device and the cutting position for fixing the guide pulley, by appropriately selecting the mounting position of the auxiliary pulley 10, breakage due to interference between the two reciprocating wire saws 16 can be achieved. This eliminates the danger of fast, accurate, and safe cutting.

[Brief description of the drawings]

FIG. 1 is a vertical side view.

[Explanation of symbols]

 1 unit main body 2,3 horizontal pulley 4,5 vertical pulley 6,7 axis 8,9 axis 10 auxiliary pulley 11 axis 12 column 13 wire saw 14 drive device 15 main pulley

Claims (1)

[Utility model registration claims] 1. A pair of horizontal pulleys, a pair of vertical pulleys having a rotation surface set on a surface orthogonal to the rotation surface of the horizontal pulley, and a pair of vertical pulleys on a pulley base body fixed to a concrete structure to be cut. An auxiliary pulley that can support the distance from the horizontal pulley rotation surface to some extent freely on the same rotation surface as the rotation surface is provided. The vertical pulley has a pair of horizontal pulleys, the outer peripheral edges of which are arranged close to each other, and the auxiliary pulley has a pair. And a pulley suspension device for wire sawing, which is pivotally connected to one of a plurality of mounting holes formed in a column, which is located at a substantially intermediate position of the vertical pulley and is separated from the horizontal pulley.