JPS6119554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD This invention relates to an aerial transport device for collecting felled wood.

Prior Art Conventionally, endless tyler systems, falling block systems, and double endless systems have been commonly used as aerial conveyance devices for collecting wood.

In the endless styler system, as shown in Fig. 1, an overhead cable 3 is installed and fixed between a base column 1 and a front column 2, a carriage 4 is movably supported on the aerial cable 3, and one end is connected to a power winch. 5 drum 6
A loading cable 7 wrapped around the carriage 4 passes through two sets of guide pulleys 8 and is tied to the front post 2, and a loading hook 9 is provided on the loading cable 7 between the guide pulleys 8. An endless cable 111, a part of which is wound around another drum 10 of the power winch 5, is fixed to the carriage 4 and is looped around the sides of the aerial cable 3 via a number of guide pulleys 12. Furthermore, a pull cable 14 having one end wrapped around the drum 13 of the power winch 5 is routed around the side of the aerial cable 3 via a guide pulley 12 and tied to the load hook 9.

In this endless styler system,
If the endless cable 11 is moved around to either the left or right, the loading hook 9 moves to the main column 1 side or the leading column 2 side, and when the loading cable 7 is loosened, the pulling cable 14
When the load rope 7 is reeled in, the load hook 9 is pulled down, and conversely, when the load rope 7 is reeled in and the lead-in rope 14 is loosened, the load hook 9 is pulled up.

However, the endless styler system described above has the following defects. First, this system requires as many as four cables, and two of them bypass the sides of the aerial cable 3, so the number of guide pulleys installed increases accordingly, and it takes a lot of effort to erect and remove the cables. It takes. In particular, it takes a lot of effort to erect just one endless cable. That is, since the endless cable 11 cannot be wound around the drum 10 in an endless state, when winding it around the drum 10, some of the constituent wires of the endless cable are unraveled, a part of which is cut open, and the endless cable is wrapped around the drum 10. After winding, it is necessary to twist the component wires and rejoin the cut openings.

Moreover, the circumference of the endless cable 11 is constant,
Even if this system is re-strung in a place where the distance between the base pole 1 and the front pole 2 is short, the endless cable 11
As in the case where the distance is long, it is necessary to make a large detour, and the effort is the same.

In addition, especially in recent years, thinning has become more important than clear-cutting for the purpose of environmental conservation, etc., and the amount of felling per rope has decreased, requiring many cable re-strings. Naturally, if this system is adopted, it will be very difficult to replace it.

Further, in this endless styler system, the pull cable 14 between the carriage 4 and the guide pulley 12 closest to the carriage 4 moves back and forth so as to rotate around the guide pulley 12 as the carriage 4 travels. Therefore, if there is an obstacle within the triangular site connecting the guide pulley 12, the base pillar 1, and the front pillar 2, it will hinder the movement of the carriage 4. Therefore, a thinning method in which trees are cut down in spots and there are remaining trees. That would be inconvenient.

Further, the falling block system includes an overhead cable 3 and a carriage 4, as shown in FIG.
A pull line 15 has one end wrapped around the drum 6 of the power winch 5 and runs parallel to the overhead cable 3, and is tied to the carriage 4 via the guide pulley 8 of the carriage 4; drum 1
3 and a pull-in cable 14 that bypasses the side of the aerial cable 3 and is tied to the load hook 9 at the other end.

Compared to the endless styler system, this falling block system does not have anything equivalent to an endless rope, so it is easier to erect and take down the rope, but the towing rope 15 is still bypassing the side of cable 3;
It is similar to the endless styler system in that the pulling cable 14 moves forward and backward in a rotational manner around the guide pulley 12, and is not suitable for use in tree thinning.

The double endless system has two endless cables 11, 1 outside the aerial cable 3, as shown in FIG.
6, one endless line 11 is strung similarly to the endless tyler system, and the other endless line 16 is attached to the drum 1 of the power winch 5.
3 and around the drive pulley 17 of the carriage 4 multiple times to bypass the side of the aerial cable 3, and the loading hook 9 is taken in and out as the endless cable 16 runs. This is how it was done.

Therefore, in this double endless system, there is no rope that moves forward and backward while rotating as the carriage 4 moves, but since there are two endless ropes, it is extremely labor-intensive to string the rope, and the above-mentioned Similarly, it is not suitable for thinning.

OBJECTS OF THE INVENTION It is an object of the present invention to provide an erection conveyance device that eliminates the deficiencies of the prior art as described above, prevents entanglement, etc., and enables efficient timber collection work.

Embodiment Hereinafter, an embodiment embodying the present invention will be described based on FIG. 4 and subsequent figures. The power winch 20 includes a first drum 22, a second drum 22, and a third drum 22, which are actively rotated by an engine 21 in either forward or reverse directions.
23 and 24.

The traveling overhead cable 25, which is wound around the first drum 22 at one end, is installed and supported so as to be able to travel via a guide pulley 20 attached to the base column 26 and a guide pulley 29 attached to the tip column 28, respectively,
The other end is tied to a carriage 30, which will be described later. Then, as the first drum 22 rotates in the clockwise direction in FIGS. 4 and 5, the traveling overhead cable 25 is wound up.

A hoisting carriage 30 (hereinafter simply referred to as a carriage) is suspended from the overhead cable 25 between the guide pulleys 27 and 29, and the hoisting carriage 30 rotates clockwise when the first drum 22 rotates. By traveling in the direction of arrow P, the traveling aerial cable 25 is moved to the front post 28 side, and
The first drum 22 rotates counterclockwise and the traveling overhead cable 25 travels in the direction of the reverse arrow P, thereby moving toward the base pillar 26 side. The carriage 30 is provided with an hourglass-shaped pulley 31 as a driving pulley and two sets of guide pulleys 32 and 33. Further, as shown in FIG. 6, a winding shaft 34 is supported on the carriage 30 coaxially with the hourglass-shaped pulley 31, and a hanging rope 35 is wound around the outer periphery of the winding shaft 34. The hanging rope 35 is suspended downward via a fleet angle pulley 42 and a guide pulley 43, and a load hook 36 is provided at its tip. The winding shaft 34 is rotated integrally with the hourglass-shaped pulley 31, and as the hourglass-shaped pulley 31 is rotated clockwise in FIGS. 4 and 5, the winding is performed. The handle shaft 34 is rotated in a direction to unwind the hanging rope 35 and pull out the load hook 36.

Both ends of a load guide rope 37 are wound around the second and third drums 23 and 24 in the same winding direction, and as both drums 23 and 24 rotate clockwise, the load guide rope 37 is wound around the second and third drums 23 and 24. is wound up.
This load guide cable 37 is supported by the guide pulley 27, and at the middle part, as shown in FIG.
1 can be wrapped at least once and a half times. Further, the load guide cable 37 is removed from the hourglass-shaped pulley 31, and as shown in FIG.
33 and revolves around a guide pulley 38 located on the side of the traveling overhead cable 25.

An auxiliary carriage 41 is suspended from the load guiding rope 37 between the guide pulleys 32 and 33 on one side of the carriage 30 and the guide pulley 38 on the side of the traveling overhead cable 25. A clamp 39 and a load hook 40 are fixed to the load guide cable 37 between the guide pulley 38 and the guide pulley 32 or 33.
and is provided.

Further, the power winch 20 is designed to recover the unwinding force of the drum rotated in the unwinding direction as the winding force of another drum, and details of this can be found in Japanese Patent Laid-Open No. 53-128846 by the same applicant. Please refer to the publication.

Next, the operation of the aerial conveyance device configured as above will be explained. First, when collecting felled timber immediately below or in the vicinity of the traveling overhead cable 25, the middle part of the load guide cable 37 is moved to the carriage 3 as shown in FIG.
0 around the hourglass-shaped pulley 31. In this state, the first drum 22 is rotated in the winding direction, and
If the second and third drums 23 and 24 are simultaneously rotated in the rewinding direction, the carriage 30 moves toward the front post 28, and the carriage 30 can be placed at a desired working position.

After the carriage 30 is placed in the working position in this way, the second drum 23 is rotated in the unwinding direction, the third drum 24 is rotated in the winding direction, and the hourglass pulley 31 is rotated clockwise. When rotated, the load hook 36 is lowered, and the load hook 36 can be carried to a load loading point directly below or in the vicinity of the traveling overhead cable 25.

After hanging the wood on the loading hook 36 at the loading point, the second drum 23 is rotated in the winding direction and the third drum is rotated in the unwinding direction, contrary to the above, and the loading hook 36 is hung. 36 is pulled up and the wood W
is suspended. Then, in that state, the second and third
By rotating the first drums 23 and 24 in the winding direction and rotating the first drum 22 in the unwinding direction, the carriage 30 is moved and the wood W is transported in the direction of the base pillar 26. I can do it.

In particular, in this conveyance device, the loading hook 36
Since the hanging rope 35 having the above-mentioned structure is wound around the winding shaft 34, the hanging rope 35 does not become entangled with the traveling overhead cable 25 or the load guidance cable 37.
There is no possibility of tangles interfering with timber collection work. Also, as mentioned above, the hanging rope 35
is wound around the winding shaft 34, so even if the carriage 41 is placed at a high place to increase the lifting height, there is no need for a balance weight on the loading hook 36 that would interfere with the work, resulting in efficient operation. Able to perform work. In order to avoid burning, if the hanging rope 35 is tied to the load guide rope 37 without being wound around the winding shaft 34, in this case, the load guide rope 37 can be wound up and unwound. The weight of the hanging rope 35 itself causes the hanging rope 35 to hang down between the tie and the fleet angle pulley 42, so that a force is applied to lift the loading hook 36. Therefore, it becomes difficult to pull out the load hook 36 or to hold it in the pulled-out position, and it becomes necessary to provide the load hook 36 with a balance weight whose weight counteracts the lifting force. However, when the balance weight is provided in this way, it takes a lot of effort to carry the hook while walking in the mountains, and the work efficiency is significantly reduced.

Next, in order to collect timber from a position away from the traveling aerial cable 25, as shown in FIG. Then, the load guide cable 37 is routed around the guide pulley 38 via the guide pulleys 32 and 33 of the carriage 30. Further, the auxiliary carriage 4 has a load hook 40 on the load guide cable 37 between the guide pulley 32 or 33 and the guide pulley 38.
1 with clamp 39.

In this way, the second and third drums 23, 24
If you rotate it in the winding or unwinding direction, the wood W
The wood can be transported to the position of the carriage 30 in a nose-up state (the wood gathering direction side is up), and the wood will not get stuck between the remaining trees.

When a predetermined amount of wood has been accumulated below the carriage 30, the load guiding cable 37 is again connected to the hourglass pulley 3.
1, the accumulated wood can be transported to the main pillar side in the same manner as described above.

As described above, in this aerial conveyance device, timber can be collected over a wide range with only two ropes, the traveling overhead rope 25 and the load guide rope 37, and the load guide rope 37 is The cable 25 is not bypassed to the side, and a guide pulley for that purpose is not required. Therefore, in addition to the fact that there are no endless cables, the installation and removal of the cables is extremely easy compared to the aforementioned endless tyler system, double endless system, and even falling block system.

Furthermore, since this aerial transport device does not include any cables that rotate as the carriage 30 moves, the transport work is not dependent on the presence or absence of obstacles such as remaining trees.

Therefore, in combination with the fact that the cables can be easily erected and removed as described above, this aerial conveyance device functions extremely effectively in collecting wood from tree thinning.

Note that, as in the above embodiment, the power winch 20
If the unwinding force can be recovered as the winding force, there is no risk of dangerous accidents caused by brake failure, etc., and the energy consumption for operation can be reduced.

Effects of the Invention As exemplified in the embodiments above, the present invention is configured to be able to collect wood using only two ropes, making it extremely easy to erect and take down the ropes, and It works effectively and exhibits excellent effects.

In addition, this invention has the effect that a hanging rope is wound around a winding shaft, which prevents the rope from becoming tangled, eliminates the need for a balance weight, and enables efficient wood collection work.

[Brief explanation of the drawing]

Figure 1 is an overall view of the endless styler system, Figure 2 is an overall view of the falling block system, Figure 3 is an overall view of the double endless system, and Figures 4 and below are an embodiment of the present invention. To show an example, Fig. 4 is an overall view showing a state in which the load guide cable is wrapped around an hourglass-shaped pulley, and Fig. 5 is a state in which the load guide cable is wrapped around a guide pulley on an imaginary side. FIG. 6 is a plan view of the carriage. Power winch...20, first drum...2
2. Second drum...23. Third drum...2
4. Traveling aerial cable...25, Main pillar...26, Guide pulley...27, 29, 32, 33, 38, Leading pillar...
28, Carriage...30, Drum-shaped pulley...31,
Take-up shaft...34, hanging rope...35, load hook...36, load guiding rope...37.

Claims (1)

[Claims] 1. A first, which is actively rotated in either forward or reverse directions.
A power winch 20 having second and third drums 22, 23, 24, which is wound around the first drum 22 at one end and is driven by guide pulleys 27, 29 on the base post 26 and the front post 28. A traveling overhead cable 25 that can be erected and supported, and a traveling overhead cable 2 that is suspended from the traveling overhead cable 25.
5, the other end of which is tied to the carriage 30, and the load guide cable 3, one end of which is wound around the second drum 23 and the other end of which is wound around the third drum 24.
7, and the carriage 30 includes a driving pulley 31 around which the intermediate portion of the load guiding rope 37 is wound, a winding shaft 34 that rotates integrally with the driving pulley 31, and a winding shaft 34 around the winding shaft 34. A hanging rope 35 is attached and has a load hook 36 at the tip and is moved in and out by the rotation of the drive pulley 31, and a load guiding rope 37.
An aerial transport device for collecting timber, characterized in that it is provided with two sets of guide pulleys 32 and 33 that support the traveling aerial cable 25 so as to orbit on a guide pulley 38 on the side thereof.