JPH0240755Y2 - - Google Patents

Description

[Detailed description of the invention] The purpose of the invention is to provide a device for cutting tree branches, etc. at high places, which can safely, easily, and reliably cut tree branches, etc. at high places on the ground. A circular saw rotated by a drive means such as a motor is installed on the upper side of a pole rod of an appropriate length, and abutting rods for a number of tree branches, etc. are placed at appropriate intervals on the back side of the circular saw at its tip. It is characterized in that it is arranged parallel and radially to the circular saw from approximately the center of the back surface of the circular saw, with the portion protruding outward from the peripheral edge of the circular saw by an appropriate length.

An example of implementing the present invention will be described with reference to the attached drawings. Reference numeral 1 denotes a rod having an appropriate length (approximately 1 to 5 m or more), and the upper part of the rod 1 has a cutting edge around a disk that is rotated by a driving means such as a motor (not shown). A circular saw 2 is provided. A driving means such as a motor is housed in a storage box 4 having a handle 3 attached to the lower side of the rod 1. Rod rod 1 is hollow,
A connecting shaft 5 is disposed inside. The lower side of the connecting shaft 5 is connected to a rotating shaft 6 of a drive means such as a motor via a connecting joint 7, and the upper side is connected to a gear storage box 8 attached to the upper side of the rod 1.
Rotating shaft 10 of bevel gear 9 disposed inside
is connected to via a connecting joint 11. The gear storage box 8 has a cylindrical body part 8' on the lower surface, and by fitting this cylindrical body part 8' to the outer peripheral surface of the upper part of the rod rod 1 and fixing it with screws, it can be attached to the upper part of the rod rod 1. Fixed location. The bevel gear 9 in the gear storage box 8 is
The distal end protrudes forward and is engaged by a bearing 12 with a bevel gear 14 fixed to a rotary shaft 13 rotatably disposed within the gear storage box 8. A circular saw 2 is fixed to the tip of a rotary shaft 13 protruding to the front outside of the gear storage box 8 via a set screw 15. Therefore, the rotation of a driving means such as a motor is transmitted to the circular saw 2 via the connecting shaft 5, the bevel gears 9 and 14, and the rotary shaft 13. 16 is a bearing that rotatably supports the bevel gear 9. 17, 18, 19, 20, and 21 are arranged on the outer surface of the gear storage box 8 located at the central part of the back side of the circular saw 2, and are mounted parallel and radially to the circular saw 2 at appropriate intervals. With a contact rod against a tree branch, etc.
Each of its tip portions protrudes outward from the periphery of the circular saw 2 by an appropriate length.

A method of using the apparatus for cutting tree branches, etc. at high places according to the above embodiment will now be explained. 3rd, 4th
As shown in the figure, a contact rod 1 is attached to the outer periphery of the tree branch A located at a high place on the opposite side to the rotation direction (clockwise) of the circular saw 2.
An appropriate one among 7, 18, 19, 20, and 21 (one in a position suitable for contact with tree branch A)
At the same time, a part of the periphery of the circular saw near the contact bar is placed on the tree branch A, and an operation switch (not shown, provided at an appropriate location such as the handle 3) is turned on to move the circular saw 2 into the direction indicated by the arrow. Rotate clockwise. The tree branch A is connected to the outer surface of the circular saw 2 on the opposite side from the rotating direction with the contact rod (17 to 2
1), the circular saw 2 can be cut reliably without slipping sideways during the cutting operation by rotating the circular saw 2. Figures 3 and 4 are explanatory diagrams of usage conditions when the tree branch A is located diagonally above the right side and diagonally above the left side of the user, respectively. diagonally upward,
When tilting diagonally upward to the left, the contact rods 17, 18, and 19 are tilted diagonally upward to the right, and when diagonally upward to the left, the contact rods 20, 21 and the lower surface of the rod 1 are connected to the tree branch A.
The circular saw 2 is rotated to cut the tree branch A. By using the cutting tool in this manner, tree branches can be cut over a wide range at the same position without having to go directly under each tree branch to be cut. In addition, if the tree branch A is thick, if the circular saw 2 is used to cut it from only one side, the tip of the tree branch will fall under its own weight near the end of cutting, which may cause the remaining bark to tear. but,
In such a case, a portion of the radially protruding contact rods facing in the opposite direction and a peripheral portion of the circular saw 2 near the contact rod are used alternately. For example, in FIG. 3, the contact rods 18 and 21
To explain the case of using , first, the tree branch A
Place the contact rod 18 on the circular saw 2 near this contact rod 18.
Grind the left side of the tree branch A to an appropriate depth using the peripheral edge of the tree, then move the circular saw 2 to the right side of the tree branch A, place the abutment rod 21 on the tree branch A, and cut a circle near the abutment rod 21. By cutting the right side of the tree branch A with the peripheral edge of the saw 2 (this is almost the same situation as using the contact rod 21 in Figure 4), the inconvenience of tearing the remaining skin can be prevented. .

In the above embodiment, a motor is used as the driving means for the circular saw 2, but the motor is not limited to this, and a motor or the like may also be used, and the driving means such as the motor may be a rod. Although the device is shown as being installed in the storage box on the lower side of the rod 1, the device is not limited to this, but it may be placed outside or on the upper side of the rod 1 and electrical wiring is provided inside the rod 1. You can do without it. Furthermore, although the mechanism for transmitting the rotational force of the driving means such as the motor to the circular saw 2 is shown as using the connecting rod 5 and the pair of bevel gears 9 and 14, it is not limited to this, and any suitable mechanism may be used. However, as in the above embodiment, a drive means such as a motor is installed on the lower side of the rod 1, and the rotational force is simply transmitted to the circular saw 2 via the connecting rod 5 and a pair of bevel gears 9, 14.
In this case, the structure at the upper side of the rod rod is extremely simplified and the weight can be reduced, making it convenient to use and carry, which is practically preferable.

Since the present invention is configured as described above, it has the following effects. First, a circular saw that is rotated by a drive means such as a motor is installed on the upper side of a pole rod of an appropriate length, and the circular saw is placed at appropriate intervals on the back side of the saw to cut an appropriate number of tree branches, etc. The abutment rod is arranged radially parallel to the circular saw from approximately the center of the back of the circular saw, with the tip of the abutment rod protruding outward from the periphery of the circular saw. By abutting the outer surface of a tree branch on the side opposite to the direction of rotation of the circular saw, and by rotating the circular saw by placing the peripheral part of the circular saw near the contact rod on the tree branch, etc., it is possible to climb trees, climb ladders, etc. There is no need to use it, and tree branches, etc. at high places can be safely, easily, and reliably cut on the ground.

Second, the abutting rods for tree branches, etc. are arranged at appropriate intervals on the back side of the circular saw, and the circular saw is cut from approximately the center of the back of the circular saw with each tip protruding outward from the periphery of the circular saw. Since a number of rods are arranged radially in parallel with the circular saw, the entire periphery of the circular saw can be used as a cutting blade by using one of the contact rods arranged radially. This allows the user to cut tree branches, etc. at high places at a wide range of angles, front, back, right and left, without having to move from position to position, improving work efficiency. It is safe because there is no danger of cut branches, etc. falling on your hands.
Additionally, if the radially arranged contact rods can be brought into contact with multiple tree branches, etc. at the same time, multiple tree branches, etc. can be cut at the same time, which improves work efficiency. . Furthermore, by alternately using a pair of opposing contact rods among the contact rods arranged radially, it is possible to easily and reliably cut tree branches, etc. from both sides, such as vertically or horizontally. This makes it possible to prevent the inconvenience of tearing of the remaining bark near the end of cutting, which is a concern when cutting only on one side when the tree branch is thick. Furthermore, since the contact rods for the tree branches, etc. extend radially and parallel to the circular saw from approximately the center of the back of the circular saw to the outside of the periphery of the circular saw, the thickness of the tree branches can be adjusted through each contact rod. It is possible to fully accommodate the differences between the following. In addition, since each contact rod has the above-mentioned structure, it can be a straight, thin rod, so even if multiple contact rods are arranged, there is little increase in weight, which is required for this type of cutting device. This is sufficient to reduce the weight of the rod head.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention; Fig. 1 is a rear view, Fig. 2 is a partially sectional side view and partially omitted side view, and Figs. 3 and 4 are explanatory diagrams of the state of use. be. 1...Pole rod, 2...Circular saw, 5...Connection shaft, 8...Gear storage box, 17, 18, 19, 2
0,21...A contact rod for tree branches, etc.

Claims (1)

[Scope of utility model registration request] A circular saw that is rotated by a drive means such as a motor is installed on the upper side of a pole rod of an appropriate length, and abutting rods for several tree branches, etc. are placed on the back side of the circular saw at appropriate intervals. Cutting tree branches, etc. at high places, characterized in that the tip protrudes outward from the periphery of the circular saw by an appropriate length and is arranged parallel to and radially from approximately the center of the back of the circular saw. Device.