JPH0310830Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a pruning machine that can easily and reliably cut branches without damaging tree trunks.

<Conventional technology and its problems> When planting trees for the purpose of harvesting timber,
Branches are pruned at regular intervals to keep the trees growing straight and to support their growth.

Therefore, the method of pruning is to cut the branches with an ax or a saw, but in the case of using the ax mentioned above, there are many cases where the tree trunk is damaged or the tree is cut too deeply into the trunk, so it is necessary to be skilled. There are problems such as the need for

In addition, when using the above-mentioned saw manually, there are problems such as requiring more labor than necessary and poor work efficiency, and when using an electric saw, the footing is always unstable, so it is difficult to use it for safety reasons. The current situation is that this has not been done.

The present invention aims to solve the above-mentioned problems and provide an electric pruning machine that is safe and has good work efficiency.

<Means for Solving the Problems> The purpose of the present invention can be achieved by the following device.The gist is that a support member is erected on a board attached to the upper end of a concave grip, and the support member At the same time, the lower end of a semicircular protection part for enclosing and protecting the rotary saw teeth is mounted on the lower part of the support member so as to be opposite to each other. On the other hand, a lever for opening the legs of the protection part is provided in the grip part, which is normally biased and supported toward the upper end by the urging force of a spring body, and both ends of the lever for opening the legs of the protection part and the above-mentioned By connecting the inner periphery of each protection part with the connecting rod for opening the legs, the protection part is always in a closed state, and the lever for opening the legs is moved downward when in use. The pruning machine is characterized in that the protection part is opened by moving, and the rotary saw teeth are driven and rotated.

<Embodiments and operations> The pruning machine according to the present invention will be described in detail below with reference to drawings showing embodiments thereof.

As shown in FIGS. 1 and 2, plate-shaped support members 2 and 2' are erected at the upper center end of the board 1, and a drive motor 3 is fixedly supported on the upper parts of the support members 2 and 2'. . In other words, the rotation shaft 4 of the drive motor 3
The rotary saw teeth 5 for cutting branches are attached to the tip of a rotary shaft 4 that is inserted loosely from the back surface to the front surface of the support member 2 and protrudes from the surface of the support member 2.
Therefore, in order to freely protect the rotary saw teeth 5, semicircular protection parts 6, 6' whose lower ends are pivotally supported are attached to the lower part of the support member 2. 6' is configured such that the legs can be freely opened in the directions of arrows A and A' in the figure, centering on the pivot parts 7 and 7'.

Next, a concave grip part 8 is formed at the bottom of the board 1, and a protective part opening lever 9 which is movable above and below the grip part 8 is attached. The leg-spreading lever 9 is always supported in the upper part by the biasing force of spring bodies 10 and 10' built into the lower part of both ends thereof. Therefore, both upper ends of the protective part leg opening lever 9 and the protective parts 6, 6'
Connecting rods 11, 1 protruding from the back surface of the circumferential edge side of
1', both ends of the connecting rods 12, 12' for opening the legs are pivotally connected between the connecting rods 12, 1' for opening the legs.
2' is loosely inserted into an insertion hole 13 formed on both sides of the center of the substrate 1, so that it can be moved upwardly and downwardly without any hindrance.

That is, by moving the protective part leg opening lever 9 downward against the urging force of the spring bodies 9, 9', the leg opening connecting rods 12, 1 connected thereto are moved.
2', the protective parts 6, 6' are opened, and are normally kept closed to protect the rotary saw teeth 5 by the biasing force of the spring bodies 10, 10'. It is something.

Furthermore, a push-in type switch 1 is provided at the bottom of the grip portion 8.
4 is attached and is normally in the OFF state, and by moving the protective part leg opening lever 9 downward, the switch 14 is pushed down by the protective part leg opening lever 9, It is in the ON state and rotates the rotary saw teeth 5.

Reference numerals 15 and 15' shown in the figure are auxiliary spring bodies for maintaining the upper protection part leg opening lever 9 in the upper position, and 16 is a main power switch for safety reasons.

Various methods are conceivable for the drive motor 3, such as electric or gasoline type, and it is desirable to adopt the most suitable method depending on the situation.

In the present invention having the above configuration, when cutting the branch B, by grasping the protective part leg opening lever 9 and the lower part of the grip part 8 by hand, the protective part leg opening lever 9 is moved downward. The protective parts 6, 6' are opened,
By further pressing the switch 14, the rotary saw teeth 5 rotate and cut the branch A.
Further, after cutting, the switch 14 is turned off by releasing the lever 9 for opening the protective part leg, and the rotation of the rotary saw tooth 5 is stopped. , 6' are returned to the closed state, resulting in a completely encapsulated and protected state.

<Effects of the invention> As described above, according to the invention, when cutting branches in poor footing, the teeth of the rotary saw are always protected by the protective part, which prevents accidental injury to the body. There was no problem, and the protective part was opened when cutting, and the switch was turned on at the same time.
This has the effect of allowing work to be carried out safely and efficiently.

[Brief explanation of drawings]

FIG. 1 is an overall explanatory view of the pruning machine of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is an explanatory view showing the pruning machine in use. In the figure, 1: board, 2, 2': support member, 3: drive motor, 5: rotary saw teeth, 6, 6': protective part,
8: Grip part, 9: Protective part leg opening lever, 10, 1
0': Spring body, 12, 12': Connecting rod for opening legs.

Claims (1)

[Scope of utility model registration request] A support member is erected on a base plate attached to the upper end of the concave grip part, and a drive motor having rotary saw teeth is installed on the upper part of the support member to support it, and the rotary saw teeth are covered and protected. The lower ends of the semicircular protective parts are pivotally supported on the lower part of the support member so as to face each other so that the legs can be opened freely, while the grip part is normally biased toward the upper end by the biasing force of a spring body. By providing a lever for opening the legs of the protective part to be supported, and connecting both ends of the lever for opening the legs of the protecting part and the inner circumferential part of each of the protection parts with a connecting rod for opening the legs, The protective part is normally kept in a closed state, and when in use, the legs of the protective part are opened by moving the leg opening lever downward, and the rotary saw teeth are driven and rotated. A pruning machine that is characterized by: