JP4346788B2 - 筍 Core cutting tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cocoon core cutting tool used for timber cutting work, which is one of overhead power line maintenance operations.
[0002]
[Prior art]
It is very smiley that buds sprout and grows and grows from spring to early summer every year, but in the vicinity of overhead power transmission lines, the grown moths contact the transmission lines and cause short-circuit accidents, etc. There is a fear. Therefore, as one of the maintenance work of overhead power transmission lines, in the power company, when the staff of each branch patrols the overhead power transmission lines in the jurisdiction and finds the corresponding part, logging is carried out . When the tip is cut, it stops growing at that position, but the portion below it has the property of branching out branches and leaves to grow into a parent bamboo, just like ordinary bamboo. For the reasons of the landowner's intention and the landscape / environment of the installation site of the overhead power transmission line, without cutting the sprouted buds from the root, only the tip of the overhead power transmission line has no problem. There are times when logging is done. This is referred to as a bales core-stop cutting operation, and conventionally, an existing sickle used for agricultural work or the like has been tied to the tip of a live wire work rod and felled.
[0003]
[Problems to be solved by the invention]
The above-mentioned core stop cutting operation of the fence is not easy because it is necessary to cut the tip of the fence at a high place with a sickle by operating a live work rod from the ground. Or the sap that oozes from the cut surface of the scissors at the time of cutting sticks to the blade surface of the sickle and immediately reduces the sharpness of the sickle, and it is necessary to sharpen the blade surface of the sickle frequently, so it is very cumbersome and work efficiency There was a problem of being bad.
[0004]
Therefore, an object of the present invention is to provide a cocoon core cutting tool that can improve the functionality and cut down efficiently.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a cocoon core cutting tool according to claim 1 of the present invention includes an outer frame having a trunk portion and a tip portion, a cutter blade that is removably attached to the tip portion of the outer frame, A live wire operation rod connecting part fixed to the backbone part of the frame , the cutter blade is detachably attached at one end by a thumbscrew, and the cutter blade is loosened to attach the cutter blade to the outer frame It can be stored and held at a safe position along the trunk . With this configuration, by carrying a spare cutter blade and going out for a patrol inspection, when the blade spills during the work or when the sharpness is reduced, only the cutter blade can be replaced and the logging operation can be performed. The sharpness is improved and the sharpening work of the blade surface is not required, so that the labor of the operator can be reduced and the functionality can be improved. Cutter blades are cheaper than conventional scythes, and even if they are disposable as consumables, the cost of the entire work cost is negligible. This reduces the labor of workers and improves work efficiency. This is far more advantageous in that it can be achieved. In addition, no special tool is required to replace the cutter blade, and it can be replaced by tightening or loosening the thumbscrew directly with the fingers of the operator, and the cutter blade is stored and held in a safe position when carried. Since it can be left and injury and accidents can be prevented, the safety is improved over the conventional sickle.
[0006]
According to a second aspect of the present invention, the outer core has a recess at the tip, and a cutter blade is attached to the bottom of the recess. With this configuration, when cutting the firewood, the tip of the firewood is hooked on the recess of the tip of the outer frame, and the live wire operation rod is pulled to the front at once, so that the tip of the firewood can be reliably cut and Can further improve the performance.
[0008]
According to a third aspect of the present invention, there is provided a stopper-holding tool in which a stopper member for holding the cutter blade in a normal position is installed at the tip of the outer frame. With this configuration, when cutting the tip of the reed, it is possible to prevent the cutter blade from escaping with the stopper member and reliably cut it.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1A is a front view of the tool, FIG. 1B is a right side view thereof, FIG. 1C is a left side view thereof, FIG. 1D is a cross-sectional view taken along a line DD in FIG. Fig. 2 (F) is an overall schematic diagram showing a state in which a live-line operating rod is connected to the tool, and Figs. 2 (A) and 2 (B) are schematic explanatory diagrams showing the state before and after the cutting of the firewood by the tool. It is.
[0010]
In FIG. 1, 1 is an outer frame, 2 is a cutter blade, 3 is a live wire operation rod connection part, 4 is a thumbscrew, 5 is a stopper member, and 6 is a live wire operation rod.
[0011]
The outer frame 1 has a series of distal end portions 1a and backbone portions 1b and is made of an aluminum material in a thin plate shape (for example, a thickness of about 6 mm). However, other lightweight materials, iron materials, stainless steel materials, etc. You may comprise. The tip 1a has a recess 1c, and the cutter blade 2 is attached to the bottom of the recess 1c so as to be replaceable. As shown in FIG. 1 (D), the thickness of the distal end portion 1a of the outer frame 1 that is the attachment portion of the cutter blade 2 is thin on the surface opposite to the attachment side toward the cutting edge 2a of the cutter blade 2. It is inclined so that it reduces the resistance to cutting the firewood. The concave portion 1c is bent and extended at a substantially right angle from the tip of the backbone portion 1b, and the extension end is further bent and extended at a substantially right angle in the same direction. The cutter blade 2 is attached near the tip of the backbone portion 1b. A hole is formed. The inner width dimension of the recess 1c is set to be slightly larger than the maximum diameter of the ridge. In addition, an inclined guide surface 1d at the time of cutting the straw is formed inside the entrance of the recess 1c.
[0012]
The cutter blade 2 is made of a thin rectangular blade material, and has a sharp edge 2a formed over the entire length on one long side. As this cutter blade 2, for example, a commercially available product (such as a cutter replacement blade manufactured by Olfa) can be used. An attachment hole is formed at one end of the cutter blade 2, and a wing screw 4 is inserted into the attachment hole and an attachment hole formed in the vicinity of the distal end of the trunk portion 1 b of the outer frame 1. Is attached to the outer frame 1 in a replaceable manner.
[0013]
As shown in FIGS. 1 (A) and 1 (B), the live wire operating rod connecting portion 3 is a bifurcated portion 3a that is fixed to the main portion 1b of the outer frame 1 via an appropriate number of mounting screws 7 in the upper half. And has an insertion hole 3b for the live line operating rod 6 in the lower half, and the outer shape is circular, and is made of the same material as the outer frame 1 or another appropriate material. A substantially L-shaped locking hole 3c is formed at the lower end serving as the insertion port of the insertion hole 3b, and a locking pin (not shown) on the side of the distal end of the live wire operating rod 6 is formed in the locking hole 3c. It is locked to prevent it from coming off.
[0014]
The thumbscrew 4 is for inserting the cutter blade 2 into the outer frame 1 by being inserted into the attachment hole at one end of the cutter blade 2 and the attachment hole in the vicinity of the tip of the trunk portion 1 b of the outer frame 1. The cutter blade 2 may be attached to the outer frame 1 by other means. However, when the cutter blade 2 is replaced, a special tool is not required when replacing the cutter blade 2, and the operator can directly use the fingers. The thumbscrew 4 can be replaced by tightening or loosening, and when carrying it, the cutter blade 2 is brought to a safe position along the backbone 1b of the outer frame 1 as shown by the chain line in FIG. Convenience in the case of storing and holding can also be improved.
[0015]
The stopper member 5 is provided for preventing the cutter blade 2 from escaping and cutting it reliably when cutting the edge of the reed. As shown in FIG. In addition to the cutter blade 2 which is attached to the vicinity of the outer bent portion of the distal end portion 1a of the outer frame 1 via an attachment screw 8 and is attached at one end with the thumbscrew 4 so as to be held at the normal position of the portion 1a. A receiving step portion 5a for receiving the end is formed between the outer frame 1 and the receiving step portion 5a. The stopper member 5 is made of the same material as the outer frame 1 or another appropriate material.
[0016]
The live wire operation rod 6 has a structure and material with a high degree of electrical insulation to prevent an electric shock accident when an operator should bring the tip of this tool into contact with an overhead power transmission line (live wire). It is configured to be adjustable in expansion and contraction, and is connected by inserting a tip into the insertion hole 3b of the live wire operation rod connecting portion 3 fixed to the outer frame 1, and is a locking hole 3c of the insertion hole 3b. Corresponding to the above, a locking pin (not shown) on the side surface of the front end of the hot wire operating rod 6 is provided so as to be locked to prevent the pin from coming off.
[0017]
The tool of the present invention has the above-described configuration. Next, a method of use will be described with reference to FIG. First, as shown in FIG. 1 (F), this tool is connected to the tip of the live wire operating rod 6, and as shown in FIG. The length of the live line operating rod 6 is adjusted, the concave portion 1c of the distal end portion 1a of the outer frame 1 is hooked on the flange 9, and the live line operating rod 6 is pulled strongly forward. Thereby, as shown to (B) of FIG. 2, the front-end | tip of the coffin 9 is cut down. The eaves 9 whose ends are cut off will stop growing, but will continue to grow, so that it will eventually become the same as the parent bamboo 10 and will be prevented from contacting the overhead power transmission line 11.
[0018]
Although the embodiment of the present invention is as described above, the shape of the outer frame 1 may be implemented as a shape similar to that of a sickle, and the outer frame 1 and the live wire operation rod connecting portion 3 are integrated. May be produced.
[0019]
【The invention's effect】
According to the invention of claim 1, by carrying out spare cutter blades and going out for patrol inspection, when cutting out of the work is occurring or when sharpness is deteriorated, only the cutter blades are replaced and logging work is performed. Can improve the sharpness, eliminate the need for sharpening of the blade surface, reduce the labor of the operator and improve the functionality, and improve the efficiency of this kind of cocoon core cutting operation be able to. Cutter blades are cheaper than conventional scythes, and even if they are disposable as consumables, the cost of the entire work cost is negligible. This reduces the labor of workers and improves work efficiency. This is far more advantageous in that it can be achieved.
[0020]
In addition, according to the invention of claim 2, when cutting the cocoon, the tip of the cocoon is hooked to the recess of the tip of the outer frame and the live wire operating rod is pulled forward to make sure the tip of the cocoon is securely attached. It can be cut down and workability can be further improved.
[0021]
Furthermore, according to the invention of claim 3, a special tool is not required for replacing the cutter blade, and it can be replaced by tightening or loosening the thumbscrew directly with the finger of the operator. Since the cutter blade can be stored and held in a safe position and injury and accidents can be prevented, safety is improved as compared with a conventional sickle.
[0022]
According to the invention of claim 4, when cutting the tip of the reed, the cutter blade can be prevented from escaping by the stopper member and can be cut down reliably.
[Brief description of the drawings]
1A is a front view of the tool, FIG. 1B is a right side view thereof, FIG. 1C is a left side view thereof, FIG. 1D is a cross-sectional view taken along line DD in FIG. The top view and (F) are the whole schematic which shows the state which connected the hot-wire operation stick | rod to this tool.
FIGS. 2A and 2B are schematic explanatory views showing states before and after a state of cutting a cocoon by this tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer frame 1a Front-end | tip part 1b Core part 1c Recessed part 1d Guide inclined surface 2 Cutter blade 2a Blade edge 3 Hot wire operation rod connection part 3a Bifurcated part 3b Insertion hole 3c Locking hole 4 Thumb screw 5 Stopper member 5a Accepting step part 6 Live line Operation rod 7 Mounting screw 8 Mounting screw 9 筍 10 Otake 11 Overhead power transmission line

Claims (3)

An outer frame having a trunk portion and a distal end, comprising: a cutter blade mounted replaceably to the distal end of the outer frame, and secured to the backbone portion of the outer frame hot-operating rod connecting portion, the cutter blade A cocoon cutting tool characterized by being detachably attached at one end with a thumbscrew and loosening the thumbscrew so that the cutter blade can be stored and held in a safe position along the trunk of the outer frame .   The outer-frame cutting tool according to claim 1, wherein the outer frame has a concave portion at a tip portion, and a cutter blade is attached to a bottom portion of the concave portion. 3. The culvert stop cutting tool according to claim 1, wherein a stopper member for holding the cutter blade in a normal position is installed at a front end portion of the outer frame.

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