JP2021176269A - Device that assists in cutting down timber from forest-thinning - Google Patents

Abstract

To provide a device that assists in cutting down timber from forest-thinning, the device facilitating the work of making a cut in the tree by using two line lasers.SOLUTION: The direction in which a tree is cut down is determined, and a straight line laser generator 4 is fixed to the tree in accordance with the cut-down direction via a fixture 8. A straight laser beam 5 from the straight line laser generator 4 is emitted along a cut to be made and its extension line. A cross line laser generator 6 is disposed opposite the straight line laser generator 4 so that a vertical beam from the cross line laser generator 6 matches the vertical, straight laser beam 5 from the straight line laser generator 4. Thus, a horizontal laser beam 10 from the cross line laser generator 6 projects an arc-shaped cutting line 9 along the arc-shaped portion of the tree to be cut down.SELECTED DRAWING: Figure 4

Description

The present invention relates to a logging assisting device for thinned wood, etc., which assists in correctly performing the work of creating a socket, which is important for determining the logging direction when logging the thinned wood, etc.

In the logging work of thinned wood, etc., the work of creating a socket that determines the logging direction is a very important work. At present, when performing felling work, after making a socket, there is a simple jig for checking whether the direction is correctly created. Most of them are made by workers, etc., and they are like straightedges or T-squares, and they only check the direction by aligning the ruler etc. with the back of the socket made using a laser pointer or the like. In logging work, there are many cases in which workers are injured because they do not fall in the expected logging direction, and in some cases, fatal accidents occur.

Recently, chainsaw maker STIHL is selling a product that supports the work of creating a socket by attaching a laser pointer to the handle of the chainsaw. By operating the chainsaw while touching the laser pointer attached to the handle to a mark on the ground, etc., the work is done to create a socket facing the felling direction.
Since this laser pointer is attached to the chainsaw while it is held in the hand, it moves with the chainsaw and always looks at the ground and the saw blade alternately, which is not good workability.

On the other hand, there is known a putting practice aid that can confirm whether the face of the putter is facing the correct direction when preparing for golf putting practice or when making a stroke (see Patent Document 1). ..
This known technique is a putting practice auxiliary device in which a line laser floodlight is attached immediately above a putter head and a battery case is attached to a grip, and the direction of the face is confirmed by the direction of the line laser light.

The applicant uses a line laser so that the work of making the socket can be performed correctly, and by using two line lasers, it is better to indicate the felling direction with a line rather than a point, so that the felling direction can be easily understood. We focused on the fact that it can clearly and clearly support the work of making a laser.

Japanese Unexamined Patent Publication No. 2008-253713 Japanese Patent No. 6249386

An object of the present invention is to provide a felling assisting device such as thinned wood that easily supports the work of creating a socket by using two line lasers.

The felling assisting device for thinning materials and the like of the present invention includes 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 cross line that emits a cross line. It consists of a laser generator, and a straight line laser generator fixed to a tree to be felled by the mounting member emits vertical lines along the tree, and the vertical lines emit vertical lines from the cross line laser generator. The cross-line laser generator is tilted to match the angle of the socket of the tree to be felled, and the cross-line laser generator emits a horizontal line to project a socket-cutting arc line.
The straight line laser generator determines the direction in which the tree to be felled is to be felled, and is fixed to the tree to be felled via the mounting member in accordance with the direction in which the tree is to be felled.
The crosshair line laser generator is installed so that the height and tilt angle can be adjusted according to the direction in which the tree to be felled is felled.

The felling assisting device for thinning materials and the like of the present invention emits vertical lines along a tree from a straight line laser generator fixed to a tree to be felled by an attachment member, and the vertical lines are emitted from a cross line laser generator. The vertical line emission of the cross line laser generator is matched with the angle of the socket of the tree to be felled, and the angle of the cross line laser generator is tilted to project the socket cutting arc line by the horizontal line emission of the cross line laser generator. As a result, the work can be performed safely without removing the receiving port cutting arc line from the saw blade of the chainsaw.

It is a front view of a tree to be felled. Front view showing the relationship between the straight line laser generator and the socket and trailhead It is a front view of the state where the straight line laser generator is attached to the tree to be felled. It is explanatory drawing which shows the relationship between the straight line laser generator and the crosshair line laser generator. It is explanatory drawing which shows the relationship between a straight line laser and a crosshair line laser.

An embodiment of a felling assisting device for thinned wood and the like of the present invention will be described below with reference to the accompanying drawings.
The felling assisting device for thinning materials and the like of the present invention includes 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 cross line that emits a cross line. It consists of a laser generator.
A dot line laser may be used instead of the line laser.

In the logging work of thinned wood, etc., the work of creating a socket that determines the logging direction is a very important work.
As shown in the front view of FIG. 1, the work of determining the felling direction 1 of the tree to be felled, forming the receiving port 2 according to the felling direction 1, forming the trailing opening 3 on the opposite side, and cutting down the tree. I do.
In logging work, there are many cases in which workers are injured or even fatally injured because they do not fall correctly in the logging direction 1 assuming that 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. ..
The straight line laser beam 5 from the straight line laser generator 4 is irradiated along the socket 2 portion to be created and the extension line thereof.
Further, the linear line laser generator 4 can adjust the angle of the linear laser light 5, and can indicate the extension direction in which the tree falls by shifting the angle.

As shown in the explanatory view of FIG. 4, the crosshair line laser generator 6 that emits a crosshair is fixed to a tripod 7 that can adjust the height and the inclination angle, and is located at a position facing the straight line laser generator 4. Will be installed.

Next, the operation operation of the felling assisting device such as thinned wood of the present invention will be described below based on the attached drawings.
As shown in the front view of FIG. 3, 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 8 in accordance with the felling direction 1.
The straight line laser beam 5 from the straight line laser generator 4 is irradiated along the socket 2 portion to be created and the extension line thereof.
As shown in the explanatory view of FIG. 4, the linear line laser generator 4 emits vertical line light along the tree, and the vertical line light emission is matched with the vertical line light emission from the crosshair line laser generator 6. The crosshair line laser generator 6 is arranged so as to face each other.
Then, the angle of the crosshair line laser generator 6 is tilted so as to match the angle of the socket 2 of the tree to be felled, and the socket cutting arc line 9 is projected by the horizontal line emission of the crosshair line laser generator 6.

As shown in the explanatory view of FIG. 5, the cross line laser is generated so as to match the vertical line emission from the cross line laser generator 6 with the linear laser light 5 of the vertical line emission of the straight line laser generator 4. Since the vessels 6 are arranged to face each other, the socket cutting arc line 9 is projected by the arc portion of the tree cut by the horizontal line laser light 10 of the cross line laser generator 6.
Since it is only necessary to hold the chainsaw (not shown) so as to coincide with the receiving arc line 9 of the horizontal line laser beam 10 of the cross line laser generator 6, workability can be greatly improved.

1 Falling direction 2 Receptacle 3 Trailing port 4 Straight line laser generator 5 Straight line laser light 6 Cross line laser generator 7 Tripod 8 Mounting member 9 Receptacle cutting arc line 10 Horizontal line laser

Claims (3)

It consists of 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 cross line laser generator that emits a cross line, and is felled by the mounting member. A straight line laser generator fixed to the tree is used to emit vertical lines along the tree, and the vertical lines are matched with the vertical line emission from the cross line laser generator to match the angle of the socket of the tree to be felled. A felling assisting device for thinned materials or the like, characterized in that the angle of the cross-line laser generator is tilted and a receiving arc line is projected by the horizontal line emission of the cross-line laser generator. The thinned wood or the like according to claim 1, wherein the straight line laser generator determines a direction in which the tree to be felled is to be felled, and is fixed to the tree to be felled via the mounting member in accordance with the direction in which the tree is to be felled. Felling assistance device. The felling assisting device for thinned wood or the like according to claim 1, wherein the crosshair line laser generator is installed so that the height and tilt angle can be adjusted according to the felling direction of the tree to be felled.

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