WO2024014815A1

WO2024014815A1 - Wire saw apparatus for excavator

Info

Publication number: WO2024014815A1
Application number: PCT/KR2023/009781
Authority: WO
Inventors: 이성준; 이채문
Original assignee: 주식회사 이건
Priority date: 2022-07-13
Filing date: 2023-07-10
Publication date: 2024-01-18
Also published as: KR102495999B1

Abstract

A wire saw apparatus for an excavator of the present invention comprises: a main body frame having an excavator connection part on the upper side and a driving pulley and a driven pulley therein; a horizontal frame coupled to the front bottom of the main body frame; a height-adjustable frame coupled to the front upper portion of the main body frame to enable height adjustment; a length-adjustable frame coupled to the height-adjustable frame to enable length adjustment; a first motor rotating the driving pulley; a second motor moving the rotation axis of the driven pulley forward and backward; a coolant spray pipe spraying a coolant to the driving pulley; a plurality of rollers rotatably mounted on the main body frame, the height-adjustable frame, and the length-adjustable frame; tongs mounted on the front of the main body frame to secure an object to be cut; and a wire wound between the driving pulley and the driven pulley and guided by the plurality of rollers to cut the object to be cut.

Description

Wire saw device for excavator

The present invention relates to a wire saw device for an excavator, and more specifically, to a wire saw device for an excavator that is mounted on an excavator and cuts metal or concrete pipes, concrete of a predetermined shape, rocks, or metal structures.

In general, stone processed through raw stone extraction is widely used in the construction field as a construction material for buildings or civil engineering works. For example, it is used as products such as building walls, road curbs, sidewalk blocks, or building floors. It is processed and used.

These stones are collected in a bulky rectangular shape by a business operator who has obtained a forest damage permit from Seoksan Mountain, transported to a stone processing company, then cut to an appropriate thickness and area and provided as plate-shaped stones themselves, and then cut again to meet specifications. It is also provided after surface processing.

Examples of methods for collecting ores from a rocky mountain as described above include the jet burner extraction method using a jet burner, a drill, and gunpowder, and the wire saw extraction method using a wire saw, a drill, and gunpowder.

Among them, the wire saw collection method determines the size of the stone (rock), drills vertically and horizontally with a longitudinal drill, drills vertical and horizontal holes in an "ㄴ" shape, and passes a wire saw (saw file) through the hole. Afterwards, both ends are pulled by a pulling machine and rotated to cut, but the back and bottom of the uncut stone are drilled and exploded with gunpowder.

This wire saw cutting method has advantages such as minimizing environmental problems and noise generation, not using diesel (oil), and suppressing flying dust, but the working conditions and cutting efficiency are poor, so it takes a lot of time to collect. There is a problem.

In particular, the wire saw method has the inconvenience of having to install a separate fixing pulley in the direction in which the stone is to be cut. In particular, in order to cut the stone, a wire saw machine must be installed, which causes inconvenience in the work. there is.

Also, since the wire saw machine must be placed in the direction of cutting the stone, it is difficult and inconvenient to work with.

The purpose of the present invention is to provide a wire saw device for an excavator that can be easily mounted on an excavator by changing the mounting angle, automatically sprays coolant, and can easily cut cutting objects of various sizes.

The wire saw device for an excavator of the present invention for achieving the above object includes a main body frame having an excavator connection part on the upper side and a driving pulley and a driven pulley therein; A horizontal frame coupled to the front bottom of the main body frame; A height-adjustable frame coupled to the front upper portion of the main body frame to enable height adjustment; A length-adjustable frame coupled to the height-adjustable frame to enable length adjustment; A first motor (including a hydraulic motor) that rotates the driving pulley; a second motor (including an electric motor) that moves the rotation axis of the driven pulley forward and backward; A coolant spray pipe that sprays coolant to the driving pulley; A plurality of rollers rotatably mounted on the main body frame, the height adjustment frame, and the length adjustment frame; A tongs device mounted on the front of the main body frame to secure the cutting object; and a wire wound between the driving pulley and the driven pulley and guided by the plurality of rollers to cut the cutting object.

The driving pulley is composed of N pulleys, and the driven pulley is composed of N+1 pulleys, so that the wire can be wound multiple times between the driving pulley and the driven pulley.

The driven pulley may be arranged so that its rotation axis is inclined.

The wire saw device for an excavator of the present invention includes a guide rail fixed to the main body frame in the longitudinal direction; a lead screw rotated by the electric motor; a moving member that moves forward and backward along the guide rail by rotation of the lead screw; It may further include a pulley bracket coupled to the moving member and on which the rotation axis of the driven pulley is mounted.

The excavator connection unit includes a center plate fixed to and fixed to the main body frame, a rotating plate rotatably mounted on the center plate and fastened to the main body frame, a bracket portion fixed to the rotating plate, and a bracket portion coupled to the bracket portion. It may include a pair of coupling pins.

The main body frame may further include a plurality of cover plates detachably coupled to at least an upper surface and a side surface, and a door plate rotatably mounted on one side to be opened and closed.

The clamp device includes a coupling plate coupled to the front of the main body frame, a pivoting shaft bracket coupled to the front of the coupling plate, a pair of clamping members rotatably mounted on the pivoting shaft bracket, and the coupling plate. It may include an actuator that is connected between the clamp members and expands and contracts.

According to the wire saw device for an excavator of the present invention described above, the wire saw device can be easily mounted on an excavator by changing its mounting angle.

It is equipped with a coolant spray pipe that sprays coolant to the drive pulley, so there is no need for the operator to supply coolant directly.

Since the length and height of a pair of horizontal frames can be changed, it can accommodate various sizes of cutting objects.

Since the driving pulley and the driven pulley are composed of a plurality of pulleys, the size of the pulley can be made small and the air cooling efficiency of the wire can be increased.

Safety accidents can be prevented by blocking the main body frame where the driving pulley and driven pulley are mounted with a cover plate and door plate.

The cutting object can be stably cut by providing a tongs device in the front to grip the cutting object.

Figure 1 is a diagram showing a wire saw device according to an embodiment of the present invention coupled to an excavator.

Figure 2 is a left side view showing a wire saw device for an excavator according to an embodiment of the present invention.

Figure 3 is a right perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

Figure 4 is an upper left rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

Figure 5 is a left perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

Figure 6 is an upper right rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

Figure 7 is a rear perspective view showing the inside of the main body of the wire saw device for an excavator.

Figure 8 is a diagram showing the driven pulley of the wire saw device for an excavator.

Figure 9 is a diagram showing the driving pulley of the wire saw device for an excavator.

Figure 10 is a diagram showing a coolant injection pipe of a wire saw device for an excavator.

Figure 11 is a front perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be exemplified and explained in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as 'include' or 'have' are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. At this time, note that in the attached drawings, like components are indicated by the same symbols whenever possible. Additionally, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically shown in the accompanying drawings.

Figure 1 is a diagram showing a wire saw device coupled to an excavator according to an embodiment of the present invention, Figure 2 is a left side view showing a wire saw device for an excavator according to an embodiment of the present invention, and Figure 3 is a view showing the wire saw device for an excavator according to an embodiment of the present invention. It is a right-side perspective view showing a wire saw device for an excavator according to an embodiment of the present invention, Figure 4 is a left upper rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention, and Figure 5 is an embodiment of the present invention. It is a left perspective view showing a wire saw device for an excavator according to an example, and Figure 6 is a top right rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

The wire saw device 100 according to an embodiment of the present invention includes a main body frame 110, a main body frame 110 having an excavator connection part 130 on the upper side and a driving pulley 160 and a driven pulley 200 therein. A horizontal frame 145 coupled to the front bottom of the body frame, a height-adjustable frame 140 coupled to the front upper part of the main body frame in a height-adjustable manner, a length-adjustable frame 150 coupled to the height-adjustable frame in a length-adjustable manner, and a driving pulley. A hydraulic motor 170 that rotates, an electric motor 240 that moves the rotation axis of the driven pulley forward and backward, a coolant spray pipe 290 that sprays coolant to the drive pulley, a main body frame, a horizontal frame, a height adjustment frame, and a length adjustment frame. A plurality of rollers 270 rotatably mounted on the body, a clamp device 190 mounted on the front of the main body frame to secure the cutting object, and a clamp device 190 that is wound between the driving pulley and the driven pulley and guided by a plurality of rollers to secure the cutting object. Includes a wire 101 for cutting.

The wire saw device 100 for an excavator of the present invention is a device that is detachably coupled to the arm of an excavator and cuts metal or concrete pipes, concrete pillars, etc. with a wire having diamond beads at predetermined intervals on the outer circumferential surface.

The main body frame 110 is formed in a structure in which 12 corners of a rectangular parallelepiped are connected to each other, so that it can form a structure that supports the entire wire saw device 100. The main body frame 110 may be provided with an excavator connection portion 130 to which the arm of the excavator 10 is coupled. The upper side of the main body frame 110 may be provided with an excavator connection frame 120 on which the excavator connection part 130 is mounted. The excavator connection frame 120 is disposed in front of the upper surface of the main body frame 110 and may be provided with a vertical coupling plate to which the excavator connection part 130 is fastened. The excavator connection part 130 may be coupled to the vertical coupling plate of the excavator connection frame 120 by fastening it with a plurality of bolts.

A driving pulley 160 and a driven pulley 200 may be rotatably mounted inside the main body frame 110. The driving pulley 160 is rotated by the hydraulic motor 170, and its rotation axis is fixed. A wire 101 is connected between the driving pulley 160 and the driven pulley 200, so that the driven pulley 200 can rotate according to the rotation of the driving pulley 160. In addition, the driven pulley 200 can move its rotation axis forward and backward by the electric motor 240 mounted inside the main body frame 110.

A pair of frames with adjustable height and length and equipped with a plurality of rollers to guide and support the wire may be coupled to the upper and lower sides of the front side of the main body frame 110. A horizontal frame 145 may be fastened or welded to the front bottom of the main body frame 110. An “L” shaped height adjustment frame 140 may be fastened to the front upper part of the main body frame 110. A plurality of fastening holes are formed at predetermined intervals on the front upper part of the main body frame 110, so that the height adjustment frame 140 can be fastened by changing the combined height.

A length-adjustable frame 150 may be fastened to the upper surface of the horizontal frame 145 and the upper surface of the height-adjustable frame 140, respectively. A plurality of fastening holes are formed at predetermined intervals in the horizontal frame 145 and the height adjustment frame 140, so that the overall length of the horizontal frame can be adjusted by changing the fastening position of the length adjustment frame 150.

As shown in FIGS. 1 and 10 , the coolant spray pipe 290 is mounted on a bracket coupled to the inside of the main body frame 110 and can spray coolant toward the driving pulley 160 . The coolant injection pipe 290 has a plurality of injection holes formed on its side, so that coolant can be supplied to each of the plurality of pulleys of the drive pulley 160. Conventionally, the operator had to directly supply coolant to the wire cutting area, but in the case of the present invention, coolant can be automatically supplied during cutting work by providing the wire saw device 100 with a coolant spray pipe 290.

As shown in FIG. 11, a plurality of rollers 270 may be rotatably mounted on the main body frame 110, the height adjustment frame 140, and the length adjustment frame 150. Two of the plurality of rollers 270 may be mounted in front of the bottom surface of the main body frame 110, and one may be mounted at a mid-height on the inner surface of one front side of the main body frame 110. In addition, one of the plurality of rollers 270 may be mounted on a bent portion of the height adjustment frame 140, and each may be mounted on the side of the pair of length adjustment frames 150.

The plurality of rollers 270 consists of a total of five main rollers 270, and each main roller 270 may be provided with an auxiliary roller 280 arranged at a predetermined interval with respect to the main roller. The main roller 270 and the auxiliary roller 280 may be made of heat-resistant plastic. The auxiliary roller 280 may have a smaller diameter than the main roller 270, and grooves for receiving the wire 101 may be formed on the outer peripheral surfaces of the main roller 270 and the auxiliary roller 280. The plurality of auxiliary rollers 280 can prevent the wire 101 hanging on the main roller 270 from easily falling out.

The tongs device 190 is mounted on the front of the main body frame 110 and can grip and secure the cutting object. The object to be cut may be a metal pipe or a concrete pillar with various outer diameters. The clamp device 190 holds the object to be cut between the upper and lower length adjustment frames 270 in front of the main body frame 110 to prevent it from moving during the cutting operation. It can be fixed.

The driving pulley 160 is composed of N pulleys 165, and the driven pulley 200 is composed of N+1 pulleys, so that the wire 101 can be wound multiple times between the driving pulley and the driven pulley.

As shown in FIG. 2, the driving pulley 160 includes a pulley bracket 161 coupled to and fixed to the main body frame 110, a rotation shaft 163 mounted on the pulley bracket, and a plurality of pulleys mounted on the rotation shaft ( 165) may be included.

As shown in FIG. 3, the pulley bracket 161 may be coupled to and fixed to one upper side of the main body frame 110. A driving pulley 160 may be mounted on one side of the pulley bracket 161, and a hydraulic motor 170 may be mounted on the other side of the pulley bracket 161.

The rotation shaft 163 may be mounted on the pulley bracket 161 in a cantilever shape. Instead, the pulley bracket 161 is formed in a “ㄷ” shape and can rotatably support one end and the other end of the rotation shaft 163.

Five pulleys 165 may be mounted on the rotating shaft 163. The number of pulleys 165 may be 2 to 10 depending on their size. In the present invention, the outer diameter of the driving pulley 160 can be made small by configuring the driving pulley 160 with a plurality of pulleys 165.

As shown in FIGS. 2 and 8, the driven pulley 200 includes a pulley bracket 201 coupled to a moving member 230 (see FIG. 7) to be described later, a rotating shaft 203 mounted on the pulley bracket, and a rotating shaft It may include a plurality of pulleys 205 mounted on.

The pulley bracket 201 is coupled to the moving member 230, so that the driven pulley 200 can also move forward and backward as the moving member 230 moves.

The rotation shaft 203 may be mounted on the pulley bracket 201 in a cantilever shape. Instead, the pulley bracket 201 is formed in a “ㄷ” shape and can rotatably support one end and the other end of the rotation shaft 203.

Six pulleys 205 may be mounted on the rotating shaft 203. The number of pulleys 205 may be 3 to 11 depending on their size. That is, the driven pulley 200 may have one more pulley than the driving pulley 160. In the present invention, the outer diameter of the driven pulley 200 can be made small by configuring the driven pulley 200 with a plurality of pulleys 205.

In addition, by configuring the driving pulley 160 and the driven pulley 200 with a plurality of pulleys, the length of the wire wound between them becomes longer, so the path in contact with the air becomes longer, allowing not only cooling by the coolant but also air The cooling effect can also be greater.

As shown in FIG. 8, the driven pulley 200 may be arranged so that the rotation axis 203 is inclined. When the driven pulley 200 is provided with six pulleys 205, the wire 101 is wound around each of the six pulleys 205 at approximately 180 degrees. Based on FIG. 8 , compared to the point where the wire 101 begins to contact the upper side of the pulley 205, the point where the contact ends on the lower side of the pulley 205 may be arranged relatively to the right. For this purpose, the rotation axis 203 of the driven pulley 200 is tilted and mounted on the pulley bracket 201. Accordingly, the wire 101 wound multiple times between the driven pulley 200 and the driving pulley 160 can be rotated smoothly.

As shown in FIG. 7, the wire saw device 100 includes a guide rail 210 fixed to the main body frame 110 in the longitudinal direction, a lead screw 220 rotated by an electric motor 240, and a lead screw of the lead screw 220. It is preferable to further include a moving member 230 that moves forward and backward along the guide rail by rotation.

A pair of guide rails 210 may be fixed to the upper inner side of the main body frame 110. The guide rail 210 is formed in the form of a circular tube or circular rod with a smooth outer peripheral surface, and the front and rear ends can be fixed to the main body frame 110 with screws.

The lead screw 220 has a square or trapezoidal thread formed on the outer peripheral surface, and the front and rear ends may be rotatably mounted on the main body frame 110 by bearings, respectively. The front end of the lead screw 220 may be connected to the rotation shaft of the electric motor 240 and rotated.

The moving member 230 is slidably mounted on a pair of guide rails 210, is screwed to the lead screw 220, and can be moved forward and backward by rotation of the lead screw 220. The pulley bracket 201 of the driven pulley 200 is coupled to one lower side of the moving member 230, so that the driven pulley 200 can move forward and backward as the moving member 230 moves.

As shown in Figures 6 and 7, the excavator connection part 130 includes a center plate 131 fixed to the main body frame 110, and a rotating plate 133 rotatably mounted on the center plate and fastened to the main body frame. ), a bracket portion 135 fixed to the rotating plate, and a pair of coupling pins 137 coupled to the bracket portion.

The excavator connection part 130 may be coupled to the vertical coupling plate of the excavator connection frame 120 by fastening it with a plurality of bolts. That is, the center plate 131 and the rotating plate 133 can be mounted by fastening a plurality of bolts to the vertical coupling plate of the excavator connection frame 120.

The center plate 131 may be formed in a circular disk shape. The center plate 131 can be fixed by fastening two bolts to the vertical coupling plate of the excavator connection frame 120.

The rotating plate 133 may be supported between the center plate 131 and the vertical coupling plate of the excavator connection frame 120 and may be mounted to rotate around the center plate 131. Four fastening holes are formed in the rotating plate 133, so the excavator connection part 130 can be rotated in 90-degree increments and then mounted by tightening bolts.

The bracket portion 135 may be formed of a pair of members in which four legs are integrally connected to the rotating plate 133.

Two coupling pins 137 may be installed between the pair of bracket parts 135. The two coupling pins 137 may be arranged at different heights.

Since the excavator connection part 130 of the present invention can be fastened by changing the mounting angle, it can cut not only horizontally arranged cutting objects but also vertically arranged cutting objects such as pillars.

As shown in FIGS. 4 and 6, the main body frame 110 includes a plurality of cover plates 114 detachably coupled to at least the top and sides, and a door plate 115 rotatably mounted on one side to be opened and closed. ) may further be included.

The cover plate 114 may be coupled to the top, right side, and rear of the main body frame 110 by a plurality of screws.

The door plate 115 may be mounted on the left side of the main body frame 110 so that the upper corner portion is rotatable.

The present invention can prevent safety accidents by isolating the inner space of the main body frame 110 from the outside by the cover plate 114 and the door plate 115. In addition, when performing maintenance, such as re-hanging the wire 101 that has come off inside to the driven pulley 200, the door plate 115 can be opened to provide easy access to the worker.

Meanwhile, the cover plate may be coupled to the top and both sides of the excavator connection frame 120. A flow control device 180 may be installed in the internal space of the excavator connection frame 120. As shown in FIG. 3, the flow control device 180 has a plurality of flow control valves therein, and a hydraulic hose may be connected between the excavator 10 and the hydraulic motor 170. The flow control device 180 can control operations such as forward and reverse rotation direction and speed of the hydraulic motor 170.

As shown in Figures 1 and 5, the clamp device 190 includes a coupling plate 191 coupled to the front of the main body frame 110, a rotation axis bracket 193 coupled to the front of the coupling plate, and a rotating shaft bracket 193 coupled to the front of the main body frame 110. It may include a pair of clamp members 195 rotatably mounted on a coaxial bracket, and an actuator 197 that is connected between the coupling plate and the clamp member and expands and contracts.

The coupling plate 191 may be coupled to the front of the main body frame 110 by fastening it with a plurality of bolts. The coupling plate 191 may be formed in the form of a rectangular plate elongated vertically.

The rotation axis bracket 193 may be integrally provided by being welded to the front middle portion of the coupling plate 191. The rotating shaft bracket 193 may include a pair of rotating shafts on which a pair of clamp members 195 are each rotatably mounted.

The pair of tongs members 195 may be formed to have an inner curved surface with a changing radius of curvature so that they can be fixed in close contact with the outer peripheral surface of a circular pipe-shaped cutting object. A rubber pad is provided on the inner side of the pair of tongs members 195 to firmly grip a cutting object with an outer diameter within a predetermined range.

The actuator 197 is connected between the coupling plate 191 and the clamp member 195 and can adjust the rotation angle of the clamp member 195. The actuator 197 may be composed of a stretchable linear actuator or a hydraulic cylinder.

As shown in Figure 11, the wire 101 is mounted on the lower length adjustment frame 150 from the driven pulley 200 through the two main rollers 270 mounted on the bottom surface of the main body frame 110. It is connected to the main roller 270 and the main roller 270 mounted on the upper length adjustment frame 150. Next, the wire 101 is connected to the driven pulley 200 through the main roller 270 mounted on the upper height adjustment frame 140 and the main roller 270 mounted inside the middle part of the main body frame 110. do. The wire 101 moves back and forth from the driven pulley 200 to the driving pulley 160 five times, and then finally from the driven pulley 200 to the two main rollers 270 mounted on the bottom of the main body frame 110. It continues. In this way, the wire 101 is formed in the form of a loop of a predetermined length and rotates by the hydraulic motor 160 between the driving pulley 160, the driven pulley 200, and the plurality of main rollers 270 to cut the cutting object. .

Above, an embodiment of the present invention has been described, but those skilled in the art will be able to understand the addition, change, deletion or addition of components without departing from the spirit of the present invention as set forth in the claims. The present invention may be modified and changed in various ways, and this will also be included within the scope of the rights of the present invention.

[Explanation of symbols]

10: Excavator 100: Wire saw device for excavator 101: Wire 110: Body frame

114: Cover plate 115: Door plate 120: Excavator connection frame 130: Excavator connection part

131: Center plate 133: Rotating plate 135: Bracket part 137: Coupling pin

140: Height adjustment frame 145: Horizontal frame 150: Length adjustment frame 160: Drive pulley

161: Pulley bracket 163: Rotating shaft 165: Pulley 170: Hydraulic motor

180: Flow control device 190: Clamp device 191: Coupling plate 193: Rotating shaft bracket

195: Clamp member 197: Actuator 200: Driven pulley 201: Pulley bracket

203: Rotating shaft 205: Pulley 210: Guide rail 220: Lead screw

230: Moving member 240: Electric motor 270: Main roller 280: Auxiliary roller

290: Coolant injection pipe

Wire saw devices for excavators can be used in industrial sites such as dismantling concrete structures.

Claims

A main body frame having an excavator connection on the upper side and a driving pulley and a driven pulley inside;

A horizontal frame coupled to the front bottom of the main body frame;

A height-adjustable frame coupled to the front upper portion of the main body frame to enable height adjustment;

A length-adjustable frame coupled to the height-adjustable frame to enable length adjustment;

a first motor that rotates the driving pulley;

a second motor that moves the rotation axis of the driven pulley forward and backward;

A coolant spray pipe that sprays coolant to the driving pulley;

A plurality of rollers rotatably mounted on the main body frame, the height adjustment frame, and the length adjustment frame;

A tongs device mounted on the front of the main body frame to secure the cutting object; and

A wire saw device for an excavator including a wire wound between the driving pulley and the driven pulley and guided by the plurality of rollers to cut the cutting object.
According to clause 1,

The driving pulley is composed of N pulleys,

The driven pulley consists of N+1 pulleys,

A wire saw device for an excavator, characterized in that the wire is wound multiple times between the driving pulley and the driven pulley.
According to clause 2,

A wire saw device for an excavator, wherein the driven pulley has a rotation axis disposed at an angle.
According to clause 1,

A guide rail fixed to the main body frame in the longitudinal direction; and

A wire saw device for an excavator, further comprising a lead screw rotated by the second motor.
According to clause 4,

a moving member that moves forward and backward along the guide rail by rotation of the lead screw; and

A wire saw device for an excavator further comprising a pulley bracket coupled to the moving member and on which the rotation axis of the driven pulley is mounted.
According to clause 1,

The excavator connection is

A center plate fastened to and fixed to the main body frame,

a rotating plate rotatably mounted on the center plate and fastened to the main body frame;

A bracket part fixed to the rotating plate,

A wire saw device for an excavator, comprising a pair of coupling pins coupled to the bracket portion.
According to clause 1,

The main body frame is

A plurality of cover plates detachably coupled to at least the top and sides,

A wire saw device for an excavator, further comprising a door plate that is rotatably mounted on one side and opens and closes.
According to clause 1,

The clamp device is

A coupling plate coupled to the front of the main body frame,

A wire saw device for an excavator, comprising a rotating shaft bracket coupled to the front of the coupling plate.
According to clause 8,

The clamp device is

A pair of tong members rotatably mounted on the pivot shaft bracket,

A wire saw device for an excavator, characterized in that it further includes an actuator that is connected between the coupling plate and the clamp member and expands and contracts.
According to clause 1,

The first motor includes a hydraulic motor,

A wire saw device for an excavator, wherein the second motor includes an electric motor.