JPH0142447Y2 - - 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. It is characterized in that a circular saw rotated by a driving means such as a motor is attached to the upper side of a rod rod of an appropriate length.

An example of implementing the present invention will be described with reference to the attached drawings. 1 is a rod having an appropriate length (approximately 1 to 5 m or more), and a motor 2 is installed on the upper side of the rod 1.
A circular saw 3, which is a circular saw with a cutting blade attached to the periphery of a disc that is rotated by a driving means such as the above, is attached. The driving means such as the motor 2 is housed in a storage box 5 having a handle 4 attached to the lower side of the rod 1. 6 is a power source (battery) for the driving means such as the motor 2, 7 is a cord insertion port for the battery, and 8 is a power switch for the driving means such as the motor 2. The rod rod 1 is hollow, and a connecting shaft 9 is disposed inside. The lower part of the connecting shaft 9 is connected to a rotating shaft 10 of a drive means such as a motor 2 via a connecting fitting 11, and the upper part is
Gear storage box 12 attached to the upper side of the rod 1
A gear rotatably disposed within the first gear 13
is connected to the rotating shaft 14 of the rotary shaft 14 via a connecting fitting 15. The first gear 13 meshes with a second gear 16, and the second gear 16 meshes with a third gear 17.
A bevel gear 18, which is a fourth gear, is integrally provided with the gear 17, and a bevel gear 19, which is a fifth gear, meshes with the fourth gear 18 at right angles. The fifth gear 19 is a circular saw 3 that penetrates from the inside of the gear storage box 12 to the outside and is pivotally connected via a bearing 20.
It is fixed to the rotating shaft 21 of. Therefore, the rotation of the driving means such as the motor 2 is transmitted to the circular saw 3 via the connecting shaft 9 and the first to fifth gears 13 to 19. Reference numerals 22 and 23 are frames that protrude oppositely from each other at appropriate intervals on both sides of the gear storage box 12 to prevent the branches from sliding sideways during cutting. This is to prevent tree branches from sliding sideways. 24 is a gear storage box 1 between a pair of sideslip prevention frames 22 and 23
This is an adjustment fitting provided at an appropriate position on the upper part of the tree branch, and is used to adjust the depth of entry of the upper part of the circular saw 3 into the lower surface of the tree branch. This is because if the circular saw 3 is used to cut the tree branch from only one direction, either the top or bottom, the tip of the tree branch will fall under its own weight before the cut is finished, and the remaining bark will be cut off. Since there is a risk of splitting, first saw the bottom of the tree branch to an appropriate depth, and then cut with a circular saw from the top side of the tree to avoid the inconvenience of splitting the remaining skin. It is for. The adjustment fittings 24 are attached to the sideslip prevention frames 22 and 23 with bolts and nuts.
2 and 23 in the vertical direction, and therefore, within the length of this long hole 25, the penetration depth of the upper part of the circular saw 3 into the lower surface of the tree branch is adjusted. You can adjust the mounting position as appropriate.

9 to 11 show other embodiments. In the above embodiment, the sideslip prevention frame 22 was fixed to the gear storage box 12, but in this case, a long hole 26 is bored in the mounting flange of the sideslip prevention frame 22 to the gear storage box 12. A tightening bolt is fitted into this elongated hole 26, and therefore, within the length of this elongated hole 26, the sideslip prevention frames 22, 23 are adjusted according to the thickness of the tree branch.
The facing distance between the two can be adjusted. Further, in the above embodiment, the metal fitting 24 for adjusting the depth of penetration of the upper part of the circular saw 3 into the lower surface of the tree branch is
Although those shown are attached to the skid prevention frames 22 and 23, in this case they are attached to the upper surface of the gear storage box 12. The adjustment fitting 24' has a structure in which an appropriate number of handles are provided on the circumferential surface of a disc and a threaded rod protrudes from the lower surface, and this threaded rod is fixed to the upper surface of the gear storage box 12 and a screw is carved inside. Its height is adjusted by screwing and fitting it into the boss.

Furthermore, in the above embodiment, the motor 2 is used as the driving means for the circular saw 3, but the motor 2 is not limited to this, and a motor or the like may also be used. Although the device is shown as being installed on the lower side of the rod 1, it is not limited to this, but it may also be installed on the upper side of the rod 1 and electrical wiring can be provided inside the rod. .

As described above, the present invention is to attach a circular saw that rotates via a drive means such as a motor, a connecting shaft, and gears to the upper side of a rod rod of an appropriate length, and to attach the circular saw to the gear storage box that houses the gears. A pair of tree side skid prevention frames are disposed on both the upper and lower sides, facing each other at appropriate intervals, or the opposing distance can be adjusted. A height-adjustable adjustment fitting for adjusting the penetration depth of the upper part of the saw was used to form a device for cutting tree branches, etc. at high places. By bringing the lower part into contact with the upper surface of the tree branch, there is no need to climb a tree or use a ladder, and the tree branch at a high place can be cut easily, reliably, and safely on the ground. Since the tree branches are cut while being held between a pair of skid prevention frames, it is possible to prevent the tree branches from skidding due to the rotation of the circular saw, making the cutting even safer and more reliable. . In addition, the adjustment metal fittings interposed between the pair of sideslip prevention frames are brought into contact with the lower surface of the tree branch by rotating the circular saw to saw the lower surface of the tree branch to an appropriate depth, and then the circular saw is cut from the upper surface side of the tree branch. By cutting the tree by applying it to the tree, it is possible to reliably prevent the skin of the remaining part of the tree from being torn, which may occur if the tree is cut from only one direction, either the top or bottom.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; Fig. 1 is an overall front view, Fig. 2 is a plan view of the upper side of the rod on which a circular saw is installed, and Fig. 3 is a cross section taken along line B-B in Fig. 4. figure,
Figure 4 is a sectional view taken along line E-E in Figure 2, Figure 5 is a view taken along arrow C in Figure 4, Figure 6 is a view taken along line D in Figure 4, and Figure 7 is taken along line F-- F cross-sectional view, Figure 8 is a vertical cross-sectional view of the lower part of the rod rod where driving means such as a motor are arranged, Figure 9
Figures to Figures 11 show other embodiments; Figure 9 is a plan view of the upper part of the rod rod where a circular saw can be installed;
The figure is a sectional view taken along the line AA in FIG. 11, and FIG. 11 is a sectional view taken along the line DD in FIG. 9. 1...Pole rod, 2...Drive means such as a motor, 3...
... Circular saw, 9 ... Connection shaft, 12 ... Gear storage box, 22, 23 ... Skid prevention frame, 24, 24'
...Adjustment fittings.

Claims (1)

[Scope of utility model registration request] A circular saw that rotates via a driving means such as a motor, a connecting shaft, and gears is attached to the upper side of a pole rod of an appropriate length, and a pair of tree branch side slides are installed on both upper and lower sides of the gear housing box that houses the gears. The prevention frames are arranged opposite to each other at appropriate intervals or the opposed interval can be adjusted, and the depth of entry of the upper part of the circular saw into the lower surface of the tree branch is adjusted in the upper part of the gear storage box between the pair of tree branch skid prevention frames. 1. A device for cutting tree branches, etc. at high places, characterized in that a height-adjustable adjustment fitting is interposed therebetween.