JP7150259B2 - Felling assist device for thinned wood, etc. - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a felling assist device for thinned timber, etc., which assists in correctly performing the work of creating a socket, which is important for determining the felling direction when felling timber such as thinned timber.

In the felling work of thinned wood, etc., the work of creating a socket for determining the felling direction is a very important work. When felling trees, at present, there is a simple jig for checking whether or not the direction has been created correctly after making a socket. Most of them are made by the workers themselves, and they are similar to a ruler or a T-square, and they are simply used to confirm the direction by aligning a ruler or the like to the back of a socket made using a laser pointer or the like. In logging work, there are many cases in which workers are injured or even die because they do not fall down correctly in the expected felling direction.

Chainsaw maker STIHL recently sells a product that supports the work of creating sockets by attaching a laser pointer to the handle of a chainsaw. By operating the chainsaw while pointing the laser pointer attached to the handle to a mark such as the ground, the work of making a receiving opening facing the felling direction is performed.
Since this laser pointer is attached to the chainsaw held in the hand, it moves with the chainsaw, and the user must constantly look at the ground and the saw blade alternately while working, which is not good workability.

On the other hand, there is known a putting practice assist device that can confirm whether the face of the putter is oriented in the correct direction when the golf putter is held or when the putter is stroked (see Patent Document 1). .
This well-known technology is a putting practice aid in which a line laser projector is attached just above the putter head, a battery case is attached to the grip, and the direction of the face is confirmed by the direction of the line laser light.

The applicant uses a line laser in order to correctly perform the work of making the undercut. We paid attention to the fact that it can clearly support the work of creating

JP 2008-253713 A Japanese Patent No. 6249386

SUMMARY OF THE INVENTION An object of the present invention is to provide a felling assistance device for thinned wood or the like that easily supports the work of creating a socket by using two line lasers.

The felling assistance device for thinned wood or the like of the present invention comprises a straight line laser generator that emits a straight line, a mounting member that fixes the straight line laser generator to a tree to be felled, and a crosshair line that emits a crosshair. A straight line laser generator fixed to the tree to be felled by the mounting member emits vertical line light along the tree, and the vertical line emits vertical line light from the cross line laser generator to the vertical line. The angle of the crosshair line laser generator is tilted according to the angle of the socket of the tree to be felled, and the crosshair line laser generator emits a transverse line to project the socket cutting arc.
The straight line laser generator determines the felling direction of the tree to be felled, and is fixed to the tree to be felled via the mounting member in accordance with the felling direction.
The crosshair line laser generator is installed so that its height and inclination angle can be adjusted according to the felling direction of the tree to be felled.

In the felling assistance device for thinned wood of the present invention, a straight line laser generator fixed to a tree to be felled by a mounting member emits light in a vertical line along the tree, and a cross line laser generator emits light along the vertical line. and the angle of the cross line laser generator is tilted to match the angle of the socket of the tree to be felled, and the horizontal line of the cross line laser generator projects the socket cutting arc line. Thus, work can be safely performed without removing the socket cut arc from the saw blade of the chain saw.

1 is a front view of a tree to be felled; FIG. Front view showing the relationship between the straight line laser generator and the undercut and felling cut FIG. 2 is a front view of a straight line laser generator attached to a tree to be felled; FIG. 4 is an explanatory diagram showing the relationship between a straight line laser generator and a cross line laser generator; FIG. 4 is an explanatory diagram showing the relationship between a straight line laser and a cross line laser;

An embodiment of the assisting device for felling thinned wood or the like according to the present invention will be described below with reference to the accompanying drawings.
The felling assistance device for thinned wood or the like of the present invention comprises a straight line laser generator that emits a straight line, a mounting member that fixes the straight line laser generator to a tree to be felled, and a crosshair line that emits a crosshair. and a laser generator.
A dot line laser may be used instead of the line laser.

In the felling work of thinned wood, etc., the work of creating a socket for determining the felling direction is a very important work.
As shown in the front view of FIG. 1, a felling direction 1 of a tree to be felled is determined, a receiving opening 2 is formed in accordance with the felling direction 1, and a felling opening 3 is formed on the opposite side to cut down the tree. I do.
In tree felling work, there are many cases in which workers are injured, and in some cases even killed, because they do not fall down correctly in the assumed felling direction 1 if the socket 2 is not formed correctly. .

As shown in the front view of FIG. 2, the felling direction 1 of the tree to be felled is determined, and the straight line laser generator 4 is fixed via the mounting member (not shown) in accordance with the felling direction 1. .
A straight laser beam 5 from the straight line laser generator 4 is irradiated along the receptacle 2 portion to be formed and its extension line.
In addition, the straight line laser generator 4 can adjust the angle of the straight laser beam 5, and can indicate the direction in which the tree falls down by shifting the angle.

A crosshair line laser generator 6 that emits crosshairs is fixed to a tripod 7 that is adjustable in height and angle of inclination, as shown in the explanatory diagram of FIG. Installed.

Next, the operating operation of the assisting device for felling thinned wood or the like according to the present invention will be described below with reference to the accompanying drawings.
As shown in the front view of FIG. 3, a felling direction 1 of a tree to be felled is determined, and the straight line laser generator 4 is fixed via the mounting member 8 in accordance with the felling direction 1 .
A straight laser beam 5 from the straight line laser generator 4 is irradiated along the receptacle 2 portion to be formed and its extension line.
As shown in the explanatory diagram of FIG. 4, the straight line laser generator 4 emits vertical line light along the tree, and the vertical line light emission from the cross line laser generator 6 coincides with the vertical line light emission. A crosshair line laser generator 6 is arranged oppositely.
Then, the angle of the cross line laser generator 6 is tilted so as to match the angle of the socket 2 of the tree to be felled, and the cross line laser generator 6 emits horizontal line light to project the socket cut arc line 9. - 特許庁

As shown in the explanatory diagram of FIG. 5, the cross line laser is generated so that the vertical line emission from the cross line laser generator 6 coincides with the vertical line emission of the straight laser light 5 of the straight line laser generator 4 . Since the devices 6 are arranged opposite each other, the horizontal laser beam 10 of the cross line laser generator 6 projects the socket cut arc line 9 by the arc portion of the tree to be felled.
Since it is only necessary to hold a chain saw (not shown) so that it is aligned with the socket cutting arc 9 of the horizontal laser beam 10 of the cross line laser generator 6, workability can be greatly improved.

1 felling direction 2 socket 3 felling 4 straight line laser generator 5 straight laser light 6 cross line laser generator 7 tripod 8 mounting member 9 socket cutting arc line 10 horizontal line laser

Claims (3)

A straight line laser generator that emits straight light, a mounting member that fixes the straight line laser generator to a tree to be felled, and a cross-hair line laser generator that emits cross-hairs. A linear line laser generator fixed to a tree to be felled emits vertical line light along the tree, and the vertical line is matched with the vertical line light emitted from the cross line laser generator to match the angle of the socket of the tree to be felled. and tilting the crosshair line laser generator to project a socket cutting arc line by lateral light emission of the crosshair line laser generator. 2. The thinned wood or the like according to claim 1, wherein the straight line laser generator determines a felling direction of the tree to be felled, and is fixed to the tree to be felled via the mounting member in accordance with the felling direction. felling aid. 2. A device for felling thinned wood or the like according to claim 1, wherein said crosshair line laser generator is installed so that its height and inclination angle can be adjusted according to the felling direction of the tree to be felled.

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