JPS6049728A - Automatic pruning machine with finished blade - 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 performs pruning for the production of knot-free timber, pruning for pest control and management to prevent cold damage, or pruning before felling standing trees (hereinafter simply referred to as pruning). This paper concerns improvements to automatic pruning machines.

Most of the pruning and delimbing of standing trees is done manually using saws, rudders, etc., but in the case of high places, it is necessary to use ladders, ``burinawa'', etc., or use a tree climbing device. They were forced to do dangerous and hard labor. Recently, there has been a demand for mechanization and automation of pruning work, and several automatic pruning machines have been developed and appeared in which the device automatically moves up and down the tree trunk and the blade rotates while pruning. Proposed. However, these automatic pruning machines use a chenosaw as a cutting tool, so the chenosaw is long vertically, which makes it possible to leave the base of the branch uncut. There were drawbacks to it. In addition, since the chino with the cutter is rotated at high speed along the guide plate, it is necessary to lubricate the chino, the chino sprocket, and the guide plate. If the amount of oil is too large, oil will adhere to the cut end of the branch. It has been pointed out that if the amount of lubrication is too small, it may burn and cause the chino to break, making it inconvenient to handle. These things are the same even if the chenosaw is provided with a double front and rear saw.

The present invention improves the conventional automatic pruning machine as described above, and provides an automatic pruning machine with excellent performance that promises a finish equal to or better than that achieved by conventional manual pruning with a saw or rudder. In an automatic pruning machine that cuts branches by rotating the blade around the tree trunk, when the blade is arranged to rotate around the outer circumference of the tree trunk, the rotation circle is A plate-shaped cutter is arranged as a finishing cutter in contact with the periphery of the tree trunk in a substantially tangential direction, and a cutter guide is provided so that the bottom surface of the rotary disc-shaped cutter is in approximate contact with the outer periphery of the tree trunk, and the finishing cutter and the cutter guide are provided. At least ``the blade guide is provided so as to be rotated with the bottom surface pressed against the outer periphery of the tree trunk, and a pre-branching blade is used to cut the branch leaving a part of the branch before the finishing disc-shaped blade. This is because they are placed away from the outer circumference of the tree trunk and approximately tangentially around the tree trunk.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the state of use of an automatic pruning machine with a finishing knife according to the present invention, and FIG. 2 is a sectional view taken along line A-A in FIG. FIG. 3 is a cross-sectional view showing a state of cutting by a flat disc-shaped knife.

As shown in Figure 1, the main body of the pruning machine consists of a machine frame (1),
The machine frame (1) consists of an engine (2), a cutter part (3), and a running shaft (4). ), a middle ring rail B (9), and a plurality of vertical columns (8) that support them. Ring rail A (
6) and the lower ring (7) is the ring rail B (9).
), and the ring rail B (9) has an outer periphery rack gear (11) rotatably provided on the outer periphery.

This outer rack gear (1) is connected to the engine (2), which will be described later.
is fixed to the gear case (10).

The engine (2) is supported below the gear case (10) so as to be able to rotate around the outer periphery of the ring rail B (9) together with the gear case (10), and the upper part of the gear case (10) is connected to the outer peripheral gear (5) of the ring rail A (6). and meshes with a drive gear (not shown) that is substantially inserted into the gear case (10), and is held on the inner periphery of ring rail A (6) and ring rail B (9), and runs along ring rail A (6). ring rail B
An outer rack gear (11) rotatably provided on the outer periphery of (9)
) is a mechanism that can rotate integrally with the

The blade part (3) includes a disk-shaped blade (13) installed on the upper end of the engine's gear case so as to be able to swing up and down and come into contact with the tangential direction around the tree trunk, and a pre-pruning blade installed approximately at right angles to the disc-shaped blade (13). It consists of a cutlery chenosaw (19). The rotating disc-shaped cutter (13) is provided with a cutter guide (14). Details of these structures will be described later.

A running shaft (4) is arranged on the inner surface of the support column (8) and is supported by a spring or the like against a tree trunk (15), and in this case consists of a rubber caterpillar. The power of the running shaft (4) meshes with the outer rack gear' (11) which rotates together with the gear case (10) of the engine (2). Binion gear (16)
The transmission shaft (18) is connected from the traveling reducer (17) with
) to transmit rotation to the caterpillar running shaft (4) and raise and lower the pruning machine body.

The blade part (3) consists of a chenosaw (19) and a disc-shaped blade (13).
) are provided almost at right angles. Rotating disc-shaped cutter (
13) as a finishing cutter is placed in contact with the circumference of the tree trunk in a substantially tangential direction, and a cutter guide (
14) is provided so that it can be rotated with the bottom surface of at least the cutting tool guide of the finishing disc-shaped cutting tool (13) and the cutting tool guide (14) being pressed against the outer periphery of the tree trunk.

In addition, prior to the finishing disc-shaped knife (13), a chenosaw (19), which is a pre-branching knife, is used so as to cut away from the outer circumference of the tree trunk so as to cut while leaving a part of the branch, and at a point substantially tangent to the circumference of the tree trunk. It was placed in the direction. The pre-branching knife may be a rotating disc-shaped knife other than a chenosaw.

The details of the blade part (3) are shown in the cross-sectional view in Fig. 2.
The chenosaw (19), which is a cutting tool for cutting, and the disc-shaped cutting tool (13) for finishing are rotated by the same engine (2).

For that purpose, the blade axis A (20) of the chainsaw (19)
The gear (21) provided in the engine (2) and the gear (2) of the engine (2)
2) are interlocked, and the blade axis B (2) of the disc-shaped blade (13)
3) is connected to the cutter shaft A (20) via bevel gears (24) (25) and a flexible shaft (26).

With the above structure, a chainsaw with a pre-branching blade (
19) is first cut off leaving the base (28) of the branch (27) as shown by the dotted line in FIG. This is because when cutting suddenly with a finishing disc-shaped knife, the disc-shaped knife is left with a small portion of the branch to prevent it from being subjected to resistance due to the branch's own weight during cutting.

A finishing disc-shaped cutter (13) is then applied to the remaining base (28).
) section. With such a two-stage cutting method, the resistance of the base (also referred to as a branch seat) (28) of the branch (27) against the disc-shaped blade (13) is reduced. Therefore, a flat disc-shaped cutting tool as shown in FIG. 3 can be used as the finishing disc-shaped cutting tool (13).

Originally, a disc-shaped knife was the most preferable finishing knife, as mentioned above, but by cutting the branches in advance, leaving a few centimeters of branches, disc-shaped knives can now be used for finishing. . In addition, the problem of oil adhesion to the cutting surface caused by using a chainsaw as a pruning machine, which had been pointed out in the past, was solved by installing a disc-shaped blade next to the chain saw.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the automatic pruning machine attached to the tree trunk, Figure 2
The figure is a sectional view taken along the line AA in FIG. FIG. 3 is a cross-sectional view when a smooth disk-shaped cutter is used. (1) Machine frame (2) Engine (3) Cutting tool (4) Running wheel (5) Outer gear (6) Ring rail A (7) Lower ring (8) Support column (9) Ring rail B (10) Engine gear case (11) Outer rack gear (12) Cutting tool fulcrum (13)
Rotating disc-shaped cutter (14) Cutler guide (15) Tree trunk (
16) Binion gear (17) Travel reducer (18)
Transmission shaft (19) Chainsaw (20) Cutting tool shaft A (21)
(22) Gear (23) Knife shaft B (24) (25
) Bevel gear (26) Flexible shirt l ~ (27) Branch (28) Base and above Applicant Kurtz Kikai Co., Ltd. Agent Patent attorney Hirozo Mori

Claims (1)

[Claims] In an automatic pruning machine that lifts and lowers the main body of the pruning machine while hugging the circumference of the tree trunk with one running axis, and also rotates the blade installed on the upper part of the main body around the tree trunk to cut branches, the blade section rotates around the outer circumference of the tree trunk. When arranging the rotating disk-shaped cutter as a finishing cutter, it is placed in contact with the circumference of the tree trunk in a substantially tangential direction, and a cutter guide is provided so that the bottom surface of the rotating disk-shaped cutter substantially touches the outer periphery of the tree trunk. Of the finishing cutter and the cutter guide, at least the bottom surface of the cutter guide is provided so as to be rotated while being pressed against the outer periphery of the tree trunk, and a pre-pruning cutter is attached to a part of the branch prior to the finishing disc-shaped cutter. An automatic pruning machine equipped with a finishing blade, characterized in that it returns from the outer periphery of the tree trunk so as to cut while leaving a cut edge, and is arranged in a substantially tangential direction around the tree trunk.