JPS6062924A - Blade guide of automatic pruning machine - 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 is applicable to pruning for the production of knotless wood, pruning for pest control or cold damage prevention, or pruning before felling of standing trees (hereinafter referred to as pruning). This is related to the blade guide of an automatic pruning machine, and the blade part of the pruning machine securely attaches to the branch so that it can reliably pruning against the random branch numbers of various sizes that exist around the outer circumference of the tree trunk. This provides a novel structure that can be brought into contact.

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 tree climbing devices. 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. This pruning machine has a machine body and a blade part that move up and down in a helical manner relative to the tree trunk, and a frame of the main body of the machine that moves vertically up and down, and a blade part that rotates on the machine frame and moves up and down against the tree trunk. There are two ways to move up and down in a spiral pattern. However, these automatic pruning machines mainly use a chainsaw as the cutting tool, so even though the tree trunk is always bent to a greater or lesser degree, the chainsaw is vertically long and difficult to follow the tree trunk. This leaves the base of the branch uncut, but it also has the disadvantage that the chenosaw can dig into the tree trunk, damaging the tree trunk or causing the chenosaw to be severed. 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 low, it may burn and cause the chino to break, making it inconvenient to handle. These things are the same even if the chenosaw is installed in front and rear double. To solve the problem of the cutter digging into the tree trunk and leaving branches uncut even when the tree trunk is bent and deformed, shorten the length of the 1WA cutter and install a cutter guide that follows the outer circumference of the tree trunk near the top and bottom of the cutter. The present inventors have previously discovered that it is possible to provide a.

The present invention further improves the structure of the automatic pruning machine as described above,
In order to reliably cut randomly located branches, the blade part is elastically supported on the main body of the branch cutting machine so that it can swing up and down, and a special guide is provided on the blade part to ensure that the blade cuts branches reliably. The aim is to provide a new structure that promises pruning that is as reliable or more reliable than conventional pruning done by people with a saw or rudder, and
It increases work efficiency. The structural features of this automatic pruning machine are that the blade is a rotating disc-shaped blade that rotates around the tree trunk to cut branches. It consists of a detection part that extends in the cutting tool's forward direction to the tip of the cutting edge and has a circular or semicircular tip, is elastically supported so as to be swingable in the vertical direction of the tree trunk, and is placed in contact with the tangential direction around the tree trunk. It is in.

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

FIG. 1 is a perspective view showing the state in which the automatic pruning machine with a finishing cutter according to the present invention is used, and FIG. 2 is a cross-sectional view of the cutter portion. FIG. 3 is a front view showing an embodiment of the blade part. FIG. 4 is a side view of the slide fitting portion. FIG. 5 is a front view of the blade guide when cutting branches, and FIG. 6 is a cross-sectional view thereof. Figures 7(a)(b) to 10(a)(b)
) are a front view and a cross-sectional view of another embodiment of the cutter guide of the present invention.

As shown in Figure 1, the pruning machine body consists of a machine frame (1),
The machine frame (1) consists of an engine (2), a cutter part (3), and a running shaft (4), and the upper ring rail (6) can be divided into two parts.
), a lower ring (7), and a plurality of vertical columns (8) that support them. The ring rail (6) has an outer rack gear (5) rotatably provided on the outer periphery, and the outer rack gear (5) is fixed to a gear case (10) of an engine (2), which will be described later.

The engine (2) is supported at the lower part of its gear case (10) together with the gear case (lO) so that it can be driven and rotated by a drive shaft (not shown) contained in a groove with a substantially C-shaped cross section in the ring rail (6). It is a mechanism that can rotate integrally with an outer peripheral rack gear (5) whose outer periphery is rotatably provided along the rail (6).

A running shaft (4) is arranged on the inner surface of the support column (8) and is supported by a tree trunk (15) with a spring or the like, and in this case is made of a rubber caterpillar. The power of the traveling shaft (4) is transmitted to the transmission shaft (1B) from a traveling reducer (17) equipped with a pinion gear (16) at the top that meshes with the outer rack gear (5) that rotates together with the gear case (10) of the engine (2). The branching machine transmits rotation to the caterpillar running shaft (4), is swingable up and down, and is provided so as to come into contact with the circumference of the tree trunk in the tangential direction. The blade part (3) consists of a rotating disc-shaped blade (12) and a blade guide (13) that guides it.The rotating disc-shaped blade (12) of the blade part (3) is a flexible blade for rotating the blade. Engine (2) by shaft (34)
is connected to.

Here, the structure of the blade guide (13) will be specifically explained using an example.

Branches are generally tree trunk numbers; they exist randomly, and the cutting position cannot be predicted. The trajectory of the blade part is shown in Figure 3 (
As shown in L), if the branch is near the center of the knife, the cutting condition will be good.

However, as shown in FIG. 5, if the branch is near the upper tip of the knife, without the knife guide, the branch will be partially cut, such as part or half, and it will not be possible to make a complete cut. This is possible by providing a blade guide. In particular, according to the invention it is possible to cut completely. Figure 5 shows the situation. When the branch A (11) is on the center line M of the knife guide arm (20) as shown in the figure, the detection part (21) at the tip of the knife guide arm (20)
When the guide roller advances and comes into contact with the branch A (11), it rolls either up or down, causing the entire blade group to swing either up or down.

As shown in branch B (11), its center is the blade guide arm (
20) above the center wAM, the entire blade group swings downward and no cutting is performed. On the contrary, branch C (1
If the center of 1) is below the center line M of the blade guide arm (20), the entire blade swings upward and the branch C is cut. In this way, the detection section (21) provided at the tip of the blade guide arm (20) can determine whether or not the branch (11) can be cut.

The specific structure of the detection unit (21) is not limited to the above-mentioned roller, but may also include a cutter guide arm (20) as shown in FIG.
) As shown in Figure 8, a circular bar made of a circular bar is attached to the tip of the cutter guide arm (20). The other end of the movably supported elliptical plate (22) is made to protrude vertically, and a spring (23) is interposed between the cutter guide arm (20) and the elliptical plate (22). like,
The object of the present invention can also be achieved by elastically supporting the sphere (32) on the cutter guide arm (20) with a plate spring (24).

Specifically, the above-mentioned detection unit (21) is a blade guide arm (20) of an automatic pruning machine having blade parts (3a) (3b) as shown in FIGS. 2 to 4. It can be provided at the tip. In this example, two blade parts are provided, a blade part (3a) that performs pruning in advance and a blade part (3b) that performs cutting after that, so that the work can be carried out efficiently. These blade parts (3a) and (3b) are elastically supported so that they are always in contact with the tree trunk. For this purpose, a guide bar support bracket (
Two parallel guide bars (25a) and (25b) are arranged by 28a and 28b, and a slide fitting (26) is slidably inserted through these.

This slide fitting (26) is attached to one guide bar support fitting (28a) by a spring (27) as shown in
) has been done. In addition, the blade part can be swung downwards by the link (20) forming the lower end of the blade guide as seen in FIG. cutlery (
12) is rotated by a bevel gear (
31).

By configuring the blade section of the automatic pruning machine as described above, it is possible to reliably prune branches that exist randomly and in various sizes around the outer periphery of a tree trunk.

[Brief explanation of drawings]

Figure 1 is an overall perspective view of the automatic pruning machine attached to the tree trunk, Figure 2
The figure is a cross-sectional view of the blade section of the branching machine. FIG. 3 is a front view of the blade part. FIG. 4 is a side view of the slide fitting portion. FIG. 5 is a front view showing the state of progress of the blade part during branch cutting, and FIG. 6 is a cross-sectional view of the same. FIGS. 7(a) and 10(b) to 10(a) and 10(b) are a front view and a cross-sectional view of the detection unit. (3) Cutting tool part (12) Rotating disk type cutting tool (13) Cutting tool guide (19) Swivel pace (20) Cutting tool guide arm (
21) Detection part (22) Elliptical plate (23) (27) Spring (24) Plate spring (25) Guide bar (2
6) Slide bracket (28) Guide bar support bracket (29)
) Link (31) Bevel gear (32) Sphere (34
) Applicant for flexible shafts and above Kurtz Kikai Co., Ltd. Agent Patent attorney Hirozo Mori Figure 7 Figure 8 (Q)

Claims (1)

[Claims] This is a blade guide for an automatic pruning machine that lifts and lowers the main body of the pruning machine while holding the circumference of the tree trunk with one traveling axis, and also rotates the blade installed on the upper part of the main body around the tree trunk to cut the tree trunk. It consists of a bottom surface that is pressed against the outer periphery of the tree trunk so as to roughly follow the outer periphery of the tree trunk, and a detection part that extends above the cutting tool in the direction of movement of the cutting tool and has a circular or semicircular tip, and can swing freely in the vertical direction of the tree trunk. A blade guide for an automatic pruning machine characterized by being elastically supported and placed in contact with the circumference of a tree trunk in a tangential direction.