JPS627084Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic pruning machine with a milling cutter that not only scrapes the pruned cut surface down to the surface of the trunk, but also makes the cut surface smooth.

A self-lifting automatic pruning machine is known as a labor-saving machine for pruning work, which is equipped with a chainsaw and climbs up the trunk in a spiral pattern while holding the trunk, and uses the chainsaw to blow away the branches. That is, as shown in FIG. 1, a circular frame body 1 is equipped with an engine 2, and power from the engine 2 is applied to drive wheels 4 that are brought into contact with the trunk 3 from the outside so as to hug the trunk 3.
...and a chain saw 5 provided in the vertical direction
The purpose of pruning is to convey the information to the following people. However,
Since the driving wheels 4 contact the trunk 3 and rotate, the automatic pruning machine 6 performs pruning while rotating in a helical pattern. After this automatic pruning machine 6 passes, a cut surface 7 of the pruned branch remains (second
(see figure).

However, even with such an automatic pruning machine 6,
Since the pruned cut surface is outside the bark 8 of the trunk 3, it is said that if left as is, it will become a dead joint when made into a wood product. Therefore, when producing the highest quality wood products, the work of manually cutting the cut surface 7 pruned by the automatic pruning machine 6 down to the surface of the trunk 3 remains, which does not save much labor. There were some drawbacks such as not being able to do so.

Therefore, this invention solves the above-mentioned drawbacks by attaching a milling cutter to the automatic pruning machine 6.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

FIG. 3 is a side view showing the operating state of the automatic pruning machine 6 according to this invention, in which the branches that have been removed are removed almost up to the surface of the trunk 3 at the rear position in the ascending direction of the part where the chainsaw 5 is installed. A milling cutter 9 is attached.

Note that power is transmitted from the engine 2 to the chain saw 5 and the milling cutter 9 as follows. That is, the power is first transmitted to the sprocket 11 fixed to the output shaft 10 of the engine 2 or a gear replacing it, and then the power is split into two, one being transmitted to the chain 14 and the sprocket 12 or a replacement thereof. The other side is transmitted to the chainsaw 5 through the gear, and the other side is transmitted to another chain 1.
5 and sprocket 13, or a gear in place of these, and is transmitted to the milling cutter 9.

Furthermore, since the automatic pruning machine 6 rotates in a helical shape and ascends, the diameter and mounting location of the milling cutter 9 are at least as large as the chain saw 5.
For example, if the upward lead of the automatic pruning machine 6 is l, and the diameter of the milling cutter 9 is w, which is approximately equal to l, then the milling cutter 9 will advance covering the entire surface of trunk 3.

The cutting surface of the milling cutter 9 is set to be closer to the trunk 3 than the chain saw 5, and the branch base 16 cut off by the chain saw 5 is further cut by this milling cutter 9. At this time, the cut surface of the milling cutter 9 is the skin 8 of the trunk 3.
The diameter of the stem 3 is set to be about the same as that of the stem 3, and the cutting is performed almost to the surface of the trunk 3 by using some vibration etc. (see Fig. 4).

In some cases, when the milling cutter 9 comes into contact with the branch base 16 to be cut, the milling cutter 9 can be moved forward to reduce its diameter, thereby cutting the bark 8 or the trunk 3 more. It can be brought closer.

As mentioned above, this invention is equipped with Chain Saw 5,
In the self-elevating automatic pruning machine 6 that lifts up in a spiral shape while holding the trunk 3 and shoots off the branches, a milling cutter cuts off the branches that have been removed almost to the surface of the trunk 3 at a position behind the chain saw 5. 9 is attached, and the diameter of the milling cutter 9 is made almost equal to the ascending lead l of the automatic branch cutting machine 6. Therefore, even if the branch head 16 is cut somewhat thickly, it can be easily cut by the milling cutter 9. It is gradually scraped off during the ascent, and the cut ends are finished smoothly without any bruises or lacerations, which is preferable over the conventional disadvantages such as all the cut ends being corroded by rainwater that penetrates into the scars. In addition, since the branch base 16 is scraped close to the surface of the trunk 3, wrapping of the bark 8 around the cut end later is promoted, which has the advantage of suitably suppressing dead knots when made into a wood product. , Furthermore, the diameter of the milling cutter 9 is the same as that of the automatic pruning machine 6.
The fact that it is almost equal to the rising lead l of the milling cutter 9 means that all the cuts can be removed no matter where the milling cutter 9 is placed as long as it is at the rear of the chain saw 5. This leads to the advantage that positional accuracy is not a problem.

[Brief explanation of the drawing]

Fig. 1 is a side view of a self-elevating automatic pruning machine, Fig. 2 is a perspective view showing its usage, and Fig. 3 is a side view when a milling cutter according to this invention is installed.
FIG. 4 is a sectional view of a cut surface obtained by pruning using the automatic pruning machine equipped with a milling cutter according to this invention. Code, 3... Stem, 5... Chainsaw, 6...
Automatic pruning machine, 9...Milling cutter, w...Diameter of milling cutter, l...Rising lead of automatic pruning machine.

Claims (1)

[Scope of utility model registration request] In a self-elevating pruning machine 6 equipped with a chain saw 5, which ascends in a spiral shape while holding the trunk 3 and knocks off branches, at a position behind the chain saw 5,
With a milling cutter, which is characterized in that it is equipped with a milling cutter 9 that cuts off the removed branches almost to the surface of the trunk 3, and the diameter of the milling cutter 9 is made almost equal to the ascending lead l of the automatic pruning machine 6. Automatic pruning machine.