JPH0127694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a pruning machine used for cutting and delimbing tree branches.

BACKGROUND ART Conventionally, a pruning machine as shown in FIG. 4 has been used. In the figure, a is a handle, and a case b housing a drive device is provided at the upper end of the handle. c is a circular saw provided on the drive device. Also, d represents a sickle.

The circular saw c is designed to rotate in the direction of the arrow AC.

The worker hangs a sickle d on a branch (not shown) and uses a circular saw c
Cut the branch by.

Problems to be Solved by the Invention However, the conventional pruning machine described above has the following drawbacks. Regarding this, in general, most of the afforestation areas are sloped lands, and in order to make it easier for workers to work, they usually stand above the root of the tree and do not hold the pruning machine, but cut branches on the left side of the tree. cut. Next, cut the right branch of the tree from that height. In that case, point the tip of the sickle d toward yourself, apply the circular saw c to the back side of the branch facing the worker, and cut it in the front direction. However, in this case, the circular saw c will direct the branch from the bottom to the top, and as the amount of cutting increases, the circular saw c will be caught in the cut being cut and tightened by the branch's own weight. For this reason, the rotation speed may decrease or the rotation speed may stop. That is, it has such drawbacks.

Next, as a prior art of this invention,
An example of this is the idea described in Publication No. 137232. Although not shown, this invention relates to a pruning machine.
Branches are cut with a rotating blade installed at the upper end of the operating rod.The height of the contact member that comes into contact with the tree trunk, which is installed in the gear case at the upper end of the operating rod, is adjustable. The interval between the two can be adjusted.

However, this branch cutting machine also applies the rotary blade from the lower part of the branch to be cut, and cuts the branch towards the upper part. Therefore, this branch cutting machine also has the disadvantage that the rotary blade is tightened at the cutting part due to the weight of the branch to be cut.

This invention was made to solve the drawbacks of the conventional devices as described above, and its purpose is to ensure that no matter which direction the pruning machine is directed toward, forward or near, the circular saw will always cut the branches. To provide a pruning machine capable of cutting a branch from the upper part to the lower part.

Means for Solving the Problems The present invention that achieves the above object is described as follows: A drive device is installed at the upper end of an elongated handle 1, using the length direction as the up-down direction, in a direction intersecting with the handle 1. A circular saw 5 is provided on the output shaft 3 of the drive device protruding from the case 2, and a circular saw 5, which is larger than the circular saw 5, is provided in the case to guard the circular saw 5. A guard member 4 with a diameter of
This pruning machine has a notch 6 that faces substantially diagonally downward in a direction that approaches the starting point while rotating.

The guard member 4 is the pruning machine in which a stopper 7 is provided downwardly at the starting point. Further, the guard member 4 is the pruning machine having a hole 8 formed in its side surface.

Further, the case 2 is the pruning machine provided with the side where the circular saw 5 is provided facing upward with respect to the handle 1.

Operation Holding this pruning machine and standing above the root of the tree on a slope, first insert the branch on the right side of the tree to be cut into the notch 6 and cut it with the circular saw 5. For the branches growing on the left side of the tree,
The handle 1 is turned half a turn, the branch is inserted into the notch 6 from the back side facing the operator, and is cut by the circular saw 5. For other branches, the contractor moves to another location and cuts them as described above.

In addition, when a stopper 7 is provided downward at the starting point of the guard member 4, the branch is brought into contact with the stopper 7 and the branch is cut while regulating its position.

In addition, in the case where a hole 8 is formed on the side surface of the guard member 4, tree bark, chips, etc. generated during pruning come out from the hole 8, so that they are removed from the guard member 4.
There is no chance of getting stuck between the and the circular saw 5.

In addition, the case 2 has a handle 1 with the circular saw 5 facing upward, so even if the handle 1 is tilted forward in use, the circular saw 5 cuts the branch from the top to the bottom. It can be cut in such a way that it faces towards.

Embodiment In FIGS. 1, 2, and 3, reference numeral 1 denotes a handle, which is elongated and has a case 2 at its upper end that accommodates a drive device (as an example, a high-speed rotation motor, not shown). There is. 3 is an output shaft of the drive device, and a circular saw 5 is provided on this.

Note that the output shaft 3 is made to project from the motor in the lateral direction of the motor by means of a bevel gear (not shown). Reference numeral 4 denotes a guard member having a substantially dish-shaped side surface, which has a diameter larger than that of the circular saw 5, and is provided concentrically with the case. A plurality of holes 8 are formed on the side surface thereof. Furthermore, a notch 6 is formed which faces diagonally downward as a whole in the direction in which the circular saw 5 approaches while rotating (the circular saw 5 rotates in the direction of arrow A5) starting from approximately the lower end of the guard member 4. .

Reference numeral 7 denotes a stopper provided at the starting point of the guard member 4, and the stopper 7 is for regulating the position of the branch to be cut. Note that 9 is an electric wire and 10 is a switch.

Effects of the Invention By being configured as described above, the present invention has the following effects. The circular saw 5 is provided with a guard member 4 having a diameter larger than that of the circular saw 5, and a notch is provided that is substantially diagonally downward in the direction in which the circular saw 5 approaches the starting point while rotating, starting from the substantially lower end of the guard member 4. By forming the section 6, the circular saw 5 cuts from the upper part of the branch to the lower part even when the branch cutting machine is used in any direction, forward or near, so that the cutting part is cut by the weight of the branch to be cut. It is possible to cut effectively without being tightened.

Since the stopper 7 is provided downward at the starting point of the guard member 4, it is possible to effectively cut the branch while regulating the position of the branch. Further, by forming the hole 8 on the side surface of the guard member 4, it is possible to prevent tree bark or chips from clogging between the guard member 4 and the circular saw 5.

In addition, since the case 2 is provided with the circular saw 5 facing upward relative to the handle 1, even if the upper part of the handle 1 is tilted forward, the circular saw 5 will cut the branch from the upper part to the lower part. It can be cut in one direction.

[Brief explanation of drawings]

Figures 1, 2, and 3 show embodiments of the present invention; Figure 1 is a front view of the pruning machine, Figure 2 is a rear view of the pruning machine, and Figure 3 is a rear view of the pruning machine. The side view, FIG. 4, is a front view of a conventional pruning machine. 1...Handle, 2...Case, 3...Output shaft, 4...
...Guard member, 5...Circular saw, 6...Notch, 7...
...stopper, 8...hole.

Claims (1)

[Claims] 1. A case 2 housing a drive device is provided at the upper end of an elongated handle 1 whose length direction is used as an up-down direction in a direction intersecting with the handle 1, and the case 2 protrudes from the case 2. A circular saw 5 is provided on the output shaft 3 of the drive device provided in The branching machine is characterized in that a notch 6 is formed with a lower end of the guard member 4 as a starting point and a notch 6 that faces diagonally downward in a direction in which the circular saw 5 approaches the starting point while rotating. 2. The pruning machine according to claim 1, wherein the guard member 4 is provided with a stopper 7 facing downward at the starting point. 3. The pruning machine according to claim 1 or 2, wherein the guard member 4 has a hole 8 formed in its side surface. 4. The pruning machine according to claim 1, wherein the case 2 is provided with the side on which the circular saw 5 is provided facing upward with respect to the handle 1.