JPS5942820A - Pruning machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a delimbing machine in which a support for rotatably supporting a single-turn blade and an engine are connected to each other by an outer vibe.

Conventionally, in tree trimmers, the axis of the rotary blade and the axis of the outer vibrator were installed to intersect on the same plane, so when cutting a branch at a high place from the ground, the outer vibrator Because of interference, it was not possible to cut from the top of the branch, so the branch was pushed up from below. For this reason, the rotary blade escapes from the branch due to the reaction force of cutting by the rotary blade, or the branch itself escapes, making work difficult.Also, in the middle of cutting, the rotary blade cuts when the branch is small, and the rotary blade is held in place by the rotary blade. Situations such as trees running away from branches, engines stopping, or limbers being swung around disrupted the work.

In the present invention, the outer vibe is arranged parallel to the converging straight line that intersects the axis of the rotary blade, and the outer vibe is arranged parallel to the axis of the rotary blade at an appropriate distance. The outer vibrator is brought into contact with the side of the branch, allowing the rotary blade to cut downward from the bottom of the branch, and the rotary blade is rotated by the reaction force of the rotary blade. The outer vibrator stops the force of the blade trying to escape laterally from the branch by coming into contact with the side surface of the branch, thereby making it easier to cut the branch.

Hereinafter, one embodiment of the present invention will be explained in detail with reference to the drawings.

In the figure, J3 is shown, and 1 is an outer vibe that connects the support body 5 that rotatably supports the rotary blade 3 and the engine 7;
．． Reference numeral 11 denotes a grip part provided in the middle of the outer vibe 1.The outer vibe 1 is provided in a direction parallel to a convergence straight line 15 is the bearing 17.17 on the support body 5.
The rotating shaft is rotatably supported by the rotary blade 3, and the outer end is between the washers 21 and 23 fitted via the spline 19.
and tighten it with the nut 25 screwed onto the tip (
Boo, it's stuck. 27 is a nut 2 at the tip of the rotating shaft 15.
A lower cover collinear with 5 protects the nut 25. 29 is an upper cover that covers the center of the upper surface of the rotary blade 3. 31 is a bevel gear provided at the inner end of the rotating shaft 15. 33 is an intermediate shaft provided in a direction perpendicular to the rotating shaft 15, and has a bevel gear 35 that engages with the bevel gear 31 at one end, and a bevel gear A7-37 at the other end, and connects the nuts 1 to 43. through splines 39 and 41, respectively. 45 and is pivotally supported on the support 5 by bearings 47 and 49. 51 and 53 are blind lids that are screwed onto the support 5. Reference numeral 55 denotes a support part that is perpendicular to the intermediate shaft 33' and protrudes from the support body 5 in a direction inclined to the rotating shaft 15. The support part 55 fits into the end of the outer vibe 1 and penetrates across the notch groove 57. It is fixed by small bolts 1 to 59. 61 is a transmission shaft that transmits the power of the engine 7, and a bevel gear 63 that engages with the bevel gear 17-37 is connected to the spline 6 at the end.
5, and is pivotally supported by the support portion 55 by a bearing 67. 69 is a branch to be cut.

In the above embodiment, by driving the engine 7, power is transmitted from the transmission shaft 61 to the intermediate shaft 33 via the bevel gears 63, 37, and further transmitted to the rotating shaft 15 via the bevel gears ν-35, 31. The rotary blade 3 is rotated and driven. The operator grasps the grip part 9°11 with both hands and
The rotary blade 3 is positioned above the branch 69 as shown in FIG. : Since the cut is made from the top to the bottom, the rotary blade 3 is not pinched by the cut, and the blade 3 rotates in the direction of the arrow pointing toward the outer vibe 1, so the rotary blade 3 is the reaction force of cutting, outer vibe 1 is branch 69
The rotary blade 3 is held in contact with and held by the rotary blade 3, so that the rotary blade 3 does not escape in the direction opposite to the arrow A, and the rotary blade 3 can be stably held.

Since the present invention has the configuration as described in the claims, the rotary blade can cut branches from the upper side to the lower side, and the rotary blade can be stably held. This makes work easier and improves work efficiency.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory view of one embodiment of the present invention, FIG.
The illustrations are a front view, side view, and
FIG. 4 and FIG. 5 are a front sectional view and a side sectional view of the main parts, respectively.

Claims (1)

[Claims] A support body 5 that rotatably supports the rotary blade 3, and an engine 7.
are connected to each other by an outer vibe 1, and the outer vibe 1 is provided in a direction parallel to a convergence straight line x-X intersecting the axial center line of the rotary blade 3 at an appropriate distance. A branch cutter.