JP7144967B2 - electric pole cutting machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a utility pole cutting machine, and more particularly to a utility pole cutting machine capable of accurately cutting a utility pole with a cutter tool without causing complicated work.

When replacing and relocating utility poles, it is necessary to remove existing utility poles. Conventionally, the method of pulling out utility poles with a crane was adopted, but since it is difficult to employ the pulling method in places where houses are densely packed, there is a tendency to adopt the method of cutting and removing utility poles.

For example, a holder is configured by interposing rollers between a plurality of links, the holder is attached to a cutter tool, the holder is hung around and embraced by a utility pole, and the utility pole is cut while rotating the cutter tool around the utility pole. A utility pole cutting machine has been proposed (Patent Document 1).

In addition, while the cutter blade of the tool is covered with a cover while leaving the cutting edge of the cutter blade of the tool, a pair of arms are rotatably supported on the cutter tool, and guide rollers are attached near the tip and base of the pair of arms. A utility pole cutting machine has been proposed in which the arm of the utility pole is wrapped around the utility pole and the utility pole is cut while the cutter tool is guided around the utility pole by guide rollers (Patent Document 2).

Furthermore, the guide rail divided into two parts is hugged by the utility pole with a gap between them and bolted to each other to form a ring shape, and the block is mounted on the guide rail so as to be rotatable around the utility pole, A utility pole cutting machine has been proposed in which a utility pole is cut by mounting a cutter tool on a block and turning the cutter tool around the utility pole (Patent Document 3).

Utility Model Registration No. 3165564 Utility Model Registration No. 3181319 Japanese Patent Application Laid-Open No. 2006-316610

However, in the utility pole cutting machine described in Patent Document 1, when the scattering concrete dust or the like is caught in the rotating roller, the holder cannot be rotated smoothly, and the cutting operation is sometimes interrupted.

In addition, in the electric pole cutting machine described in Patent Document 2, when the gripping force of the pair of arms decreases, the position of the cutter blade of the tool shifts and the end and start of the cutting opening do not match, and the operator manually hits it. There were times when I had to add and cut it.

In addition, in the electric pole cutting machine described in Patent Document 3, it was necessary to hold the two-divided guide rail to the electric pole and bolt it manually, which was a complicated work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a utility pole cutting machine capable of accurately cutting a utility pole with a cutter tool without complicating the work.

Therefore, the utility pole cutting machine according to the present invention has a cutter tool that cuts the utility pole by pressing the cutter blade against the utility pole while being rotated, and a base having a U-shaped vertical cross section. A mounting portion is provided, and one end of a pair of link arms is rotatably mounted on one side of the base by a mounting pin so as to be spaced apart from each other and parallel to the plate surface. A holder composed of plate-like link pieces rotatably connected in an arm shape by a connecting pin, and a roller rotatably supported by a rotating shaft via a roller bearing, and both ends of the rotating shaft are linked. A plurality of guide rollers rotatably supported between the arms, and rotatably attached to the other side of the base by mounting pins, the tip of which is hooked on the mounting pin of the link arm or the rotation shaft of the guide roller. and a holder that holds the link arm in a holding state of the utility pole, and has a mechanism for locking a state in which the tip is hooked on the rotating shaft of the mounting pin.

One of the features of the present invention is that the link arm is held by the utility pole, the other end of the link arm is hooked and locked by a retainer, and the cutter tool is set on the utility pole.
As a result, the link arm can be hung around the utility pole, hooked by the tip hook and locked, and the cutter tool can be easily set on the utility pole even at a high place, without incurring complication of work.

A second feature of the present invention is that guide rollers are provided between the upper and lower link arms, and roller bearings are incorporated in the guide rollers.
As a result, the cutter tool can be smoothly rotated around the utility pole to accurately cut the utility pole so that the starting end and the terminal end can be matched, and there is no need for a worker to cut the pole by manually applying a blow or the like.

A third feature of the present invention resides in that the tip hook of the holder is hooked to the attachment pin of the link arm or the rotating shaft of the guide roller so as to be hugged.
Utility poles range from large-diameter utility poles to small-diameter utility poles. The utility pole cutting machine may be a utility pole cutting machine dedicated to each diameter, but the cost will increase. In the present invention, utility poles with different diameters can be handled by selecting a mounting pin or a rotary shaft for hooking the tip hook of the holder.

The mounting pin of the link arm and the rotating shaft of the guide roller may be separate members, but the mounting pin may also function as the rotating shaft.

The cutter tool may be an electric cutter tool, but in consideration of the utility pole cutting work in rainy weather, an air cutter tool driven by air or a fluid cutter tool driven by fluid pressure, for example, pressurized oil, may be used.

Further, the roller bearing of the guide roller preferably has a structure in which both ends of the roller bearing are closed with lids in order to reduce entrainment of concrete dust and the like.

1 is a schematic perspective view showing a preferred embodiment of a utility pole cutting machine according to the present invention; FIG. It is a schematic perspective view which shows the holder, guide roller, and holder in the said embodiment. It is a schematic perspective view which shows the relationship between a holder and a holder in the said embodiment. It is a schematic perspective view which shows the cutter tool in the said embodiment. It is a side view which shows the structure of the link arm in the said embodiment. It is a figure which shows the structure of the holder in the said embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION 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 cutter tool 10 has a connecting nozzle 10A to which a hose extending from an air compressor (not shown) is connected, and a cutter blade such as a diamond cutter 12 is attached around an attachment shaft 11. As shown in FIG.

The cutter blade 12 is covered with a cover 13 leaving the cutting edge of the cutter blade 12. A handle 19 is attached to the cover 13, and an exhaust port 13A is formed in the cover 13 to direct dust from the cutting away from the utility pole. It is designed to exhaust to The exhaust may be sucked by a suction device equipped with a filter.

The cutter tool 10 is provided with a mounting pin (not shown), and the mounting pin is fitted into a mounting hole (mounting portion) 15A of the holder 14 so that the cutter tool 10 is mounted on the holder 14. As shown in FIG.

The base 15 of the holder 14 has a U-shaped longitudinal section, and one end of the upper and lower link arms 16 are rotatably mounted on one side of the base 15 by mounting pins 16E so as to be spaced apart from each other and parallel to the plate surface. The link arm 16 is constructed by rotatably connecting both ends of a plurality of plate-like link pieces 16A with a rotating shaft (connecting pin) 16B. A roller 16D is rotatably supported via a roller bearing 16C.

A mounting pin 18 is attached to the other end of the base 15 of the holder 14. A rod 17A of a holder 17 is slidably inserted through the mounting pin 18 and is retained by a nut 17B. A link piece 17C having a hook-shaped tip is attached to the other end of the rod 17A of the holder 17. The hook-shaped link piece 17C is hooked on a rotating shaft 16B of a guide roller 16D, and a nut 17B is screwed. It constitutes a mechanism that locks the tip hook in a state where it is hooked on the rotation shaft 16B by advancing it.

When cutting a utility pole, the link arm 16 is hooked around the cut point, the hook-shaped link piece 17B is hooked to the rotating shaft 16B at the position where the link arm 16 is in perfect contact with the outer surface of the utility pole, and the nut 17B is screwed to hold it. The rod 17A of the tool 17 is pulled to lock the hook-like link piece 17B hooked on the rotating shaft 16B.

Next, high-pressure air is supplied to the cutter tool 10, and while rotating the cutter blade 12, the cutter tool 10 is rotated by a predetermined angle, for example, 120° around the utility pole, and the cutter blade 12 is pressed against the utility pole. Because there is, the utility pole is cut. The cutting dust is exhausted from the exhaust port 13A of the cover 13 in the direction away from the utility pole.

After that, if the remaining cut portions of the utility pole are cut by 120 degrees in the same manner, the utility pole can be reliably cut.

As described above, the link arm 16 is held by the utility pole, the other end of the link arm 16 is hooked and locked by the holder 17, and the cutter tool 10 is set on the utility pole. It suffices to carry out a simple work of hanging it around, hooking the tip hook and locking it, and the cutter tool 10 can be easily set on the utility pole even at a high place, and the work is not complicated.

In addition, since the guide roller 16D is provided in the link arm and the roller bearing 16C is incorporated in the guide roller 16D, the cutter tool 10 is smoothly rotated around the utility pole to accurately cut the utility pole, thereby cutting the starting end and the terminal end. can be matched, and there is no need for the operator to cut by manually applying a blow or the like.

In the above example, high-pressure air is used as the drive source, but high-pressure fluid, such as high-pressure oil, may be used, and an electric cutter tool may also be used.

10 cutter tool 12 cutter blade 13 cover 14 holder 15 base 16 link arm 16A link piece 16B rotary shaft 16C ball bearing 16D roller 17 holder 17B hook-like link piece 17C nut

Claims (2)

a cutter tool (10) for cutting a utility pole by pressing the cutter blade (12) against the utility pole while being rotated;
A base (15) having a U-shaped vertical cross section is provided with a mounting portion for the cutter tool (10), and a pair of link arms ( 16) are rotatably attached by mounting pins (16E) so that one ends of the link arm (16) are spaced apart from each other and parallel to the plate surface, and the link arm (16) has a plurality of plate-like link pieces (16A) connected to the connecting pin. a holder (14) rotatably connected to an arm by (15B);
A roller (16D) is rotatably supported on a rotating shaft via a roller bearing (16C). Both ends of the rotating shaft are rotatably supported between link arms (16). a plurality of guide rollers whose upper and lower sides of the bearing (16C) are covered by the ends of the plate-like link pieces (16A) of the link arm (16) ;
It is rotatably attached to the other side of the base (15) by means of an attachment pin, and has a hook-like tip that can be hooked on the attachment pin (16B) of the link arm (16) or the rotating shaft of the guide roller. a holder for holding the link arm in a state of being held by the utility pole, and
An exhaust port is located above the link arm (16) and attached to the base (15), covers the cutting edge of the cutter blade (12) while leaving the cutting edge, and exhausts cutting dust away from the utility pole. a cover (13) having (13A) formed thereon;
A utility pole cutting machine comprising: 2. A utility pole cutting machine according to claim 1, wherein said mounting pin (16B) of said link arm (16A) also functions as a rotating shaft of said guide roller.

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