JP6435091B2 - Telephone pole cutting machine - Google Patents

Description

  The present invention relates to a utility pole cutting machine, and more particularly to a utility pole cutting machine that can accurately cut a utility pole with a cutter tool without incurring work complexity.

  When replacing and relocating the utility pole, it is necessary to remove the installed utility pole. Conventionally, a method of pulling out an electric pole with a crane has been adopted. However, since it is difficult to adopt the pulling method in a place where houses are densely populated, there is a tendency that a method of cutting and removing the utility pole is adopted.

  For example, a power pole cutter that attaches a holder with rollers between multiple links to the cutter tool, hangs the holder around the power pole, and cuts the power pole while turning the cutter tool around the power pole. A machine has been proposed (Patent Document 1).

  Moreover, while leaving the cutting edge of the rotary blade of the cutter tool and covering the rotary blade with a cover, a pair of arms are rotatably supported on the cutter tool, and guide rollers are attached to the tip and base portions of the pair of arms, A utility pole cutting machine has been proposed in which a pair of arms are held around a utility pole and the utility tool is cut while the cutter tool is guided around the utility pole by a guide roller (Patent Document 2).

Utility Model Registration No. 3165564 Utility Model Registration No. 3181319

  However, in the electric pole cutting machine described in Patent Document 1, since the holder is hung around the electric pole at a high place, the operation is troublesome.

  On the other hand, in the utility pole cutting machine described in Patent Document 2, it is only necessary to hold the utility pole with a pair of arms, so the work is less complicated, but the cutter tool slides downward during turning, and the disclosure and end positions coincide. There was a risk that it could not be cut well.

  In view of such problems, the present invention is to provide a utility pole cutter capable of accurately cutting a utility pole with a cutter tool without incurring work complexity.

  Therefore, the electric pole cutting machine according to the present invention includes a cutter tool that cuts the electric pole when the rotary blade is pressed against the electric pole, and an upper and lower portion that is attached to the cutter tool and that each of the left and right sides is provided with a vertical interval. Consists of plates, the base is pivotally supported with respect to each other, and the left and right holding arms are held by hugging the power pole, and the upper and lower plates rotate in the vicinity of the tip and the base of the left and right holding arms. It is attached freely, the left and right clamping arms are pressed against the power pole by closing the power pole, and the guide roller for guiding the cutter tool around the power pole and the left and right clamping arms are held in the power pole clamping state. And a holding tool.

  One of the features of the present invention is that the power tool is clamped by the left and right clamping arms and the cutter tool is set on the power pole. As a result, the cutter tool can be easily set on the utility pole at a high place, and the work is not complicated.

  The second feature of the present invention is that each of the left and right holding arms is constituted by a plate spaced vertically, and a guide roller is attached to each of the upper and lower plates in the vicinity of the distal end and the base of the left and right holding arms. It is in the point. As a result, the left and right clamping arms are supported at two positions above and below the utility pole in the vicinity of the distal end and the base, so that there is little possibility that the clamping arms will slide downward during turning.

  The third feature of the present invention resides in that the left and right holding arms are held in the holding state of the electric pole by the holder. Thereby, it is possible to prevent the holding arm from loosening with respect to the electric pole, to prevent the holding arm from sliding downward during turning, and to accurately cut the cutter tool with respect to the electric pole.

  The cutter tool may be an electric cutter tool, but it is preferable to adopt an air-driven air cutter tool in consideration of the work of cutting a power pole in rainy weather.

  The utility poles range from large-diameter utility poles to small-diameter utility poles. The utility pole cutting machine may be a dedicated utility pole cutting machine for each diameter, but the cost increases. Therefore, if the guide rollers of the pair of sandwiching arms are pivotally supported so as to be slidable along the arms, the guide rollers can be set according to the thickness of the utility pole, so that one type of utility pole cutting machine can be used.

It is a schematic plan view which shows preferable embodiment of the utility pole cutting machine which concerns on this invention. It is a top view except the cover of the embodiment. In the said embodiment, it is a partial top view which shows the state which removed the cutter tool. It is a side view which shows the clamping arm in the said embodiment. It is a figure which shows the state seen from the plane and side surface of the guide roller in the said embodiment. It is a disassembled perspective view which shows the cutter tool in the said embodiment.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 6 show a preferred embodiment of the utility pole cutting machine of the present invention. In the figure, a hose extending from an air compressor (not shown) is connected to the air cutter tool 10, and a rotary blade, for example, a diamond cutter 12 is attached around an attachment shaft 11.

  The rotary blade 12 is covered with the left and right covers 13A and 13B, leaving the cutting edge 12A of the rotary blade 12, and an exhaust port 13C is formed in the cover 13A to exhaust cutting dust away from the utility pole. ing. The left cover 13A protrudes forward with respect to the diamond cutter 12 and sucks cutting dust efficiently. The exhaust gas may be sucked by a suction device equipped with a filter.

  The left clamping arm 21 is rotatably attached to the case of the air cutter tool 10, and the base of the right clamping arm 22 is rotatably connected to the base of the left clamping arm 21 by a rotation shaft 23. Further, a wire spring 23A is mounted on the rotary shaft 23 to turn and bias the left and right holding arms 21 and 22 in a closing direction. The left and right holding arms 21 and 22 hold the electric pole 50 to hold the electric pole 50. I'm hugging.

  In this air cutter tool 10, as shown in FIG. 6, a stepped attachment pin 65 is attached to extend downward, while a block-like attachment base 60 is fixed to the case of the air cutter tool 10. A mounting pin 65 is inserted into the mounting hole 64, the recess 61 is sealed by the chuck 63 and locked by being hooked on the hook 62, and the mounting pin 65 is locked by the chuck 63 engaging the step of the mounting pin 65. 65 is prevented from coming off, and thus the air cutter tool 10 is detachably set in the case.

  The left and right clamping arms 21 and 22 are held at a predetermined distance from each other by arranging a pair of plates 21A vertically and fixing them with a cylindrical spacer 21C interposed therebetween.

  In addition, a slider 24 is slidably attached to each of the holding arms 21 and 22 and is fixed by a screw 28. The slider 24 has a U-shaped side surface, and the U-shaped side surface is held by a cylindrical spacer 27, and a guide roller 25 is rotatably attached to the tip of the upper surface and the lower surface of the slider 24.

  Further, guide rollers 26 are rotatably attached to the upper and lower plates 21A and 21B in the vicinity of the base of the sandwiching arm 21, respectively.

  Further, a holding tool 30 is attached in the vicinity of the base of the left and right holding arms 21 and 22, and the right holding arm 22 is closed with respect to the left holding arm 21 by rotating and reversing the screws of the holding tool 30. It can be adjusted.

  Further, an arm 35 is provided on the case of the air cutter tool 10 so as to extend downward. A pair of left and right lower guide rollers 36 are rotatably attached to the arm 35 so as to be in sliding contact with the outer peripheral surface of the utility pole 50. It has become. The lower guide roller 36 may be slidably brought into contact with the electric pole 50 as necessary by attaching the arm 35 to the case of the air cutter tool 10 so as to be tiltable. You may make it attach to this case so that attachment or detachment is possible.

  When the utility pole 50 is cut, as shown in FIG. 1, if the left and right sandwiching arms 21, 22 are held by the utility pole 50 by adjusting the position of the slider 24, the tip side of the sandwiching arms 21, 22 and the vicinity of the base portion Since the guide rollers 25 and 26 are pressed against the electric pole 50 and the holding arms 21 and 22 are held by the electric pole 50 by the urging force of the spring member 23A, the screws of the holder 30 are rotated or reversed so that the left and right holding arms When adjusting 21 and 22 in the direction to close each other, the holding arms 21 and 22 are firmly held by the utility pole 50, and at the same time, the lower guide roller 35 is pressed against the utility pole 50, and the air cutter tool 10 is firmly set on the utility pole. Is done. At this time, the guide belt 40 may be wound around the cutting line of the utility pole 50 as necessary.

  Next, high-pressure air is supplied to the air cutter tool 10 to rotate the rotary blade 12. Since the rotary blade 12 is pressed against the electric pole 50, the rotary blade 12 turns the electric pole 50 while turning along the electric pole 50. Cut off. The cutting dust is exhausted in a direction away from the utility pole 50 from the exhaust port 13C of the first cover 13A.

  At this time, since the sandwiching arms 21 and 22 are attached to the utility pole 50 by the upper and lower guide rollers 25 and 26, the sandwiching arms 21 and 22 do not slide downward during turning.

  Further, since the left and right holding arms 21 and 22 are held in the holding state of the electric pole 50 by the holder 30, the holding arms 21 and 22 are prevented from loosening with respect to the electric pole 50, and slide downward while turning. Therefore, the cutter tool 10 can be accurately turned with respect to the utility pole 50 and cut accurately.

  As a result, the cutting start position and the end position of the rotary blade 12 of the cutter tool 10 can be made to coincide with each other, and the cutting is not performed again.

  When cutting a small-diameter utility pole, the position of the slider 24 may be slid to the base side of the sandwiching arms 21 and 22 and fixed with screws 28, and thereafter the utility pole 50 may be cut in the same manner as described above.

DESCRIPTION OF SYMBOLS 10 Air cutter tool 12 Rotating blade 21 Left side holding arm 22 Right side holding arm 25, 26 guide roller 30 Holder 50 Electric pole

Claims (1)

A cutter tool (10) for cutting the electric pole (50) by pressing the rotary blade (12) against the electric pole (50);
A plurality of cylindrical spacers (21C) are attached to the cutter tool (10) and fixed between a pair of upper and lower plates (21A, 21B) with a space therebetween, and are held at a predetermined distance from each other. Left and right sandwiching arms (21, 22) that are pivotally supported with respect to each other, elastically biased toward each other in a closing direction, and held by hugging the utility pole (50);
The left and right sandwiching arms (21, 22) are rotatably attached to the upper and lower plates (21A, 21B) in the vicinity of the tip and the base, respectively, and the left and right sandwiching arms (21, 22) are connected to the utility pole (50). A guide roller (25 , 26 ), which is pressed against the electric pole (50) by closing the pin and guides the cutter tool (10) around the electric pole (50);
A holding tool (30) for holding the left and right holding arms (21, 22) in a holding state of the utility pole (50) ;
An arm (35) attached to the cutter tool (10) so as to extend downward from the left and right clamping arms (21, 22);
A guide roller (36) rotatably attached to the arm (35) and pressed against the power pole (50) to be in sliding contact;
A utility pole cutting machine characterized by comprising:

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