JPS6181307A - Method for taking-out of lumber from thinning - Google Patents

Abstract

PURPOSE:To enable lumber from thinning to be taken out even from a steep sloping site by utilizing a pipe line laid along a slope of mountainous area. CONSTITUTION:A pipe line A is laid along a slope 1 of a mountainous area by connecting in series a plurality of pipes 2 made of FRP pieces of lumber from thinning cut in an appropriate length (about 4m long) are put in this pipe line A to be dropped by their own weight into a pool B before they are collected therefrom.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a method for transporting thinned wood.

(Conventional technology) Mountain forests in Japan account for 68% of the country, and since 1955,
Reforestation is progressing, and 10 million hectares, or 40% of the mountain forest area, has been created as artificial forests.

Of these, 19% of all artificial forests currently require urgent thinning. Thinning is an important task that is essential to growing a vibrant and healthy artificial forest.

Conventionally, methods for transporting thinned wood include building forest roads or working roads and collecting the wood using work vehicles, and transporting the wood by hanging it on cables.

(Problem to be solved by the invention) However, the conventional method of transporting thinned wood requires a huge amount of money to build forest roads and working roads on steep slopes and to install cables, and There were problems such as having to cut down many trees that should not have been cut down.

Furthermore, since the thinned wood has a small diameter, the selling price is low and the production cost is relatively high.

Due to these problems, nine tree thinning operations were not carried out.

There are many places where artificial forests have been destroyed.

(Means for Solving the Problems) Therefore, one object of the present invention is to provide a method for transporting thinned wood using a pipe, and to eliminate the problems that the conventional method of transporting thinned wood has. The purpose is

(Function) Specifically, a pipeline is laid along the slope of a mountain, and thinned wood cut to a length of about 4 meters is put into this vibrator line and allowed to slide down.

(Example) FIG. 1 is a schematic diagram showing a method for transporting thinned wood of the present invention,
Pipeline A is laid by connecting a plurality of pipes 2 along the slope 1 of the mountain, and thinned wood 3 cut to an appropriate size and length of about 4 m) is placed in the pipeline A. transport. When thinned wood 3 is put into pipeline A, it slides down due to its own weight.

Pipe 2 is preferably made of synthetic resin material in view of durability, TFT impact resistance, transportability, etc.
RP is preferred.

Since the diameter of the thinned wood 3 is about 20~2G(2), the diameter of the pipe 2 is about 40~50cm, which is about twice the diameter of the thinned wood 3.
m is preferred. In addition, the length of the pipe 2 is preferably 2 to 5 m (preferably 2 m to 5 m) in consideration of transportability, connection workability, etc.

Next, specific examples of the pipe 2, which can have various shapes, will be described.

[First embodiment of pipe] The pipe 2 shown in FIG. 2 is a cylindrical body. The diameter of one end of the pipe 2 is enlarged to form a receiving part 5, into which the other end 6 of the other pipe 2 connected can be fitted. In this way, a plurality of pipes 2 are connected to form a pipeline A. 7 is pipe 2
It is a band that is wrapped around the Both ends of the band 7 are raised up, and the raised parts serve as fastening pieces 7a and 7b. Both fastening pieces? A bolt through hole' (not shown) is formed in each of a and 7b, and the band 7 is fixed to the outer peripheral surface of the pipe 2 by passing a bolt 8 through the bolt through hole and tightening a nut 9. Also.

A protruding piece 10 is also protruded outward in the middle of the band 7.
' has been made. The protruding piece 10 and both fastening pieces 7 described above
A through hole 1''1.11 is formed in a and 7b, one end of a string or wire 12 is tied to the through hole 11, and the other end of the string or wire 12 is connected to a standing tree 13 or a stake (not shown). In this way, the string or wire 12 is stretched to fix the pipe 2 (see Figure 4).1
Reference numeral 4 denotes a substantially M-shaped support base on which the pipe 2 is placed and supported. In addition.

The support stand 14 is not limited to this shape.

[Second Embodiment of Pipe] The pipe 2 shown in FIG. 5 is also a cylindrical body, but the pipe 2 is provided with flanges 15, 15 at both ends. To connect the pipes 2.2, align the flanges, fit the bolt holes (not shown) formed in the flanges, and insert the bolts 16.
, and tighten nut 17. In this way, a plurality of pipes 2... are connected to form a pipeline A. The flange 15.15 has a string or wire 12
A suitable number of through holes 18 are formed to connect one end of the tube.

The other end of the string or wire 12 is tied to a standing tree 13 or a stake, as in the previous embodiment.

[Third Embodiment of Pipe] In FIGS. 6 and 9, a pipe 2 is formed by two identical members cut in half. Pipe 2 is the seventh
As shown in the figure, the half members 2 a +2a are combined and formed. The half members 2a, 2a have the same shape, and each has edge pieces 2b horizontally protruding outward on both side edges.
・ is provided. Bolt holes (not shown) are formed in these edge pieces 2b. The pipe 2 is formed by aligning the edge pieces 2b, . . . of the two half-split members 2a, . In this way, the connections of the pipes 2 having the edge pieces 2b . . . are made as shown in FIGS. 7 and 9, for example. In the embodiment shown in FIG. 7, the pipes 2 are connected using a substantially U-shaped connecting fitting 22. Fitting holes 23 are formed in the edge pieces 2b near each end of the pipe 2, into which the leg rods 22a, 22a of the connecting fitting 22 are fitted. The connecting fitting 22 has a head 22b formed at the tip of one leg 22a to prevent removal, and a head 22b for preventing removal from the other leg 22.
A screw 22C is formed at the tip of a (see Figure 8).
. Butt the end surfaces of the two pipes 2.2 and insert into the fitting hole 23.
．． Insert the leg rods 22a, 22a of the connection fitting 22 into 23,
Both pipes 2, 2 are connected by screwing the nut 24 into the screw 22C.

[Fourth embodiment of pipe] Next, a connection example of the pipe 2 shown in FIG. 9 will be described. The edge pieces 2b near each end of the pipe 2 are notched. The two pipes 2.2 are connected by abutting the end surfaces of the two pipes 2.2 and connecting them, and by fixing this connected portion with a band 25. The band 25 has both ends erected outward, and is fastened by passing a bolt 26 through a bolt hole (not shown) formed in the upright pieces 25a, 25a, and screwing a nut 27 into the band 25. In addition, the connecting part is fixed with a band 25, and
A reliable connection can be achieved by connecting the edge pieces 2b, 2b of both pipes 2.2 with a wire 28 or the like.

Further, the pipe 2 formed by combining the two half-split members 2a, 2a is also connected to the receiving part by enlarging the diameter of one end of the pipe 2, as in the first embodiment of the pipe. The other end of the other pipe 2 may be fitted into the pipe.

The third part of the pipe. In both the fourth embodiment, a through hole 29 is formed in the edge piece 2b to which one end of the string or wire 12 is tied.
The other end of the string or wire 12 is tied to a tree 13, a stake, etc., so that the pipe 2 can be fixed.

As described above, several specific examples of the shape of the pipe 2 and the connection means have been described, but the present invention is not limited to these specific examples. What is common to the pipe 2 of each example is that
A structure may be provided inside the pipe to adjust the sliding speed of the thinning material 3 or to buffer it.

Along the mountain slope 1, a plurality of pipes 2,
... is connected to form pipeline A.

It is a good idea to create pool B below pipeline A.

The thinned wood 3 that has slipped down inside the pipeline A falls into the pool B. Pool 3 is filled with water, so 1
The impact of falling thinned wood 3 is softened by the water in pool B.

Although the above-mentioned embodiment describes only the transport of thinned wood, it goes without saying that the method of the present invention can also be applied to the transport of ordinary lumber with a rather small diameter.

(Effects of the invention) The method of the present invention allows pipeline assembly and disassembly to be carried out on the ground without requiring any special technology, requires minimal maintenance of forest roads and working roads, and allows for transport of thinned timber even on steep slopes. It is possible. In addition, since the pipe is lightweight, it is easy to transport, and thinned wood can be transported at low cost.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an embodiment of the method for transporting thinned wood of the present invention, Figs. 2 to 10 show embodiments of pipes, and Fig. 2 is a sectional view showing a connected state 1 Example], Fig. 3 is a side view of the band, Fig. 4 is a perspective view showing a means for fixing the pipe and pipeline to the mountain slope, and Fig. 5 is a side view of the band.
The figure is a perspective view showing the connected state of the pipe [a second embodiment of the pipe]. Figure 6 is a front view of a pipe formed by combining two half-split members, and Figure 7 is a perspective view showing how the pipes are connected.
3rd embodiment of the pipe]; Figure 8 is a front view of the connecting fitting;
Figure 9 is a front view showing the connection state of the pipes.
Embodiment] FIG. 10 is a side view of the band.

Claims (1)

[Claims] 1) Carrying out thinned wood, which is characterized by laying a pipeline by connecting multiple pipes along the slope of a mountain, and inserting thinned wood cut to an appropriate size into the pipeline and letting it slide down. Method.