JPH1052181A - Lopping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lopping machine capable of remarkably reducing weight and size when carrying and relatively readily operating without almost accompanying danger even in an unsafty place, by carrying out binding and separation between a driving part and a mounting part by a simple operation. SOLUTION: In this lopping machine holding a trunk circumference (m) by using a driving part A1 equipped with a motor 2, a driving wheel 4 and a power transmitting device 3 for transmitting power of the motor 2 to the driving wheel 4 and a chain saw 1 and a mounting part A2 equipped with a frame 6 moved along the truck circumference (m), idler wheels 8 and 9 mounted thereon, a spring-pressing means 10 for pressing the idle wheels 8 and 9 to the truck circumference (m), vertically spirally moving the a machine body and cutting branches with the chain saw 1 of the driving part A1 in upward movement, each of the driving part A1 and a mounting part A2 is formed independently in integrated structure and both parts are joined or separated by simple operation. Furthermore, a lock means 7 for temporarily engaging the mounting part A2 at a specific position of the trunk circumference (m) is preferably provided in the lopping machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pruning machine which automatically performs a pruning process of a tree.

[0002]

2. Description of the Related Art Examples of a pruning machine in which a trunk is hung up and down while holding a trunk circumference, and a branch is cut while ascending, for example,
Japanese Patent Publication No. 3-12847 and Japanese Patent Publication No. 3-44724 disclose such a technique.

[0003] This type of pruning machine comprises a drive section and a mounting section on which the drive section is mounted, and the drive section and the mounting section are coupled in a state that is difficult to separate.

In use, an operator always treats the entire machine as a single unit. That is, specifically, by carrying to the side of the tree to be pruned, and subsequently opening and closing a part of the mounting part without separating the mounting part from the driving part, the driving part and the mounting part Both sides are fitted to the stem, and the stem is held by these. Thereafter, the drive unit is operated to perform the pruning process.

[0005]

The conventional pruning machine described above has a large weight and a large size because the whole body is handled as a single body, and therefore works particularly in a place with poor scaffolding such as a steep slope. Or, in the work of the elderly and women, it is difficult to handle them, which leads to heavy labor.

An object of the present invention is to solve such a problem and, in addition, to prevent the efficiency of work performed by a healthy person or the like from being impaired. It is.

[0007]

In order to achieve the above object, according to the present invention, a driving unit and a mounting unit on which the driving unit is mounted spirally move up and down in a spiral shape while holding the trunk circumference. In a pruning machine that cuts a branch with a chain saw of a driving unit, each of the driving unit and the mounting unit has an independent integrated structure, and both are connected and separated by a simple operation.

More specifically, the drive unit includes a prime mover, drive wheels, and a power transmission device for transmitting the power of the prime mover to the drive wheels and the chain saw, while the mounting unit includes a frame arranged along the trunk circumference. The frame includes a frame, an idler mounted on the frame, and spring pressing means for pressing the idler against the trunk circumference.

[0009] In the above invention, in order to make the body simple and lightweight, the driving section surrounds substantially one half of the trunk circumference, and the mounting section substantially half of the other side of the trunk circumference. To be surrounded. At this time, the drive unit and the mounting unit are attached to and detached from the trunk by their connection and separation.

In such a pruning machine, the drive unit and the mounting unit can be easily attached to the trunk even when the drive unit and the mounting unit are connected, so that the efficiency of work performed by a healthy person or the like is improved. A reinforcing frame which connects the left and right ends of the mounting portion so as to surround the outside of the driving portion, and a specific range structural portion between the left and right ends of the mounting portion is removable. , The reinforcing frame and the specific range structural portion are configured to be detachable by a simple operation.

In order to make it easier to hold the fuselage on the trunk, the mounting portion cooperates with the idler wheel pressed around the trunk by the elasticity of the spring pressing means, and the mounting portion specifies the trunk. A structure is provided in which locking means for temporarily locking at the position is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a description will be given of a pruning machine according to a first embodiment of the present invention. FIG. 1 is a diagram showing a state in which the body is locked to a trunk, and FIG. It is.

[0013] The pruning machine of this embodiment comprises a driving unit A1,
It consists of a mounting part A2 on which it is mounted.

At this time, each of the driving section A1 and the mounting section A2 has an independent integral structure, and is specifically configured as follows.

That is, the drive unit A1 includes, in addition to the chain saw 1, a prime mover 2, a power transmission device 3, such as a transmission 3a, vertical transmission cylinders 3b, 3c, and a horizontal transmission cylinder 3d, control devices for driving wheels 4, electric components, and the like. It is provided with oil-and-fat-related products such as the fuel oil tank 5.

On the other hand, the mounting portion A2 includes a frame 6 extending substantially along half the circumference of the trunk m, locking means 7 for locking the frame 6 to the trunk m, idler wheels 8, 9 and idler wheels 8. Is provided with a spring pressing means 10 and the like for pressing the arm against the circumference of the trunk m.

More specifically, the motor 2 is a gasoline engine, and the power transmission device 3 is a motor 2
Is transmitted to the drive wheel 4 and the chain saw 1. At this time, the mission 3a is capable of changing the rotation of the drive wheel 4 between forward and reverse or high and low speed at any time by manual operation and at any time preset by automatic operation.

The frame 6 is a semicircular main frame 6a,
6b are vertically arranged, and these are connected by a vertical frame 6c.

The lock means 7 has an appropriately bent lock lever 7a attached to the ends of the main frames 6a and 6b on the side where the idler wheel exists so as to be rotatable in a horizontal direction and a spring 7b. It is assumed that the spring 7b is displaced beyond the position of the shaft 7c by the horizontal rotation operation of the lock lever 7 attached between the main frame 6a and the main frames 6a and 6b.

When the lock lever 7a is largely operated toward the trunk m (lock side), the lock lever 7a
As shown in the figure, the main frames 6a and 6b are held horizontally upright by the spring force. Conversely, when the main frame 6a and 6b are largely operated to the opposite side m (open side), the main frames 6a and 6b are moved along the main frames 6a and 6b by the spring force. It is configured to be retained.

The idler wheels 8 are provided with four movable ones, two of which are respectively mounted on the connecting arm 11 via the support rods 12, and such idlers are arranged up and down to form the frame frame 6.
The supporting arm means 13 is supported at a substantially central position in the left-right direction.

At this time, each connecting arm 11 is formed by bending a pipe member into an arc shape and cutting off an outer portion excluding both end portions thereof.

The support arm means 13 is provided for each frame 6a,
6b, a support piece 15 is extended, a U-shaped piece 16 is mounted on a shaft 17, and two bar members 18 are fixed to the U-shaped piece 16 in a laterally extending shape. The vertical axis member 19 is fixed. At this time, the central portion of the connecting arm 11 is attached to each end of the longitudinal axis member 19 so as to be horizontally displaceable.

The other idler wheel 9 is of a fixed type, and is mounted on the end of the upper main frame 6a via a support rod 14.

The spring pressing means 10 is provided for each main frame 6a,
6b, one end of a spring 20 is connected to the other end, a handle 21 and a locking disk 22 are fixed to the other end, and the center of the spring 20 is inserted into the inside of the connecting arm 11, and further a specific one vertical It is assumed that a locking plate 23 having a groove into which a handle-side end of the spring 20 is engaged is fixed to the frame 6c.

Further, the driving section A1 and the mounting section A2 are configured to be connected or separated by a simple operation.

That is, for example, three connecting pieces 24 are extended from the power transmission tube portion near each drive wheel 4, while supporting pieces 25 are fixed to corresponding portions of the main frames 6 a and 6 b, and these are bolted and nuts. And so on.

The above-described pruning machine is used, for example, as follows. That is, the operator manually moves the airframe from tree to tree. In this movement, the driving unit A1 and the mounting unit A2 are disconnected from each other by the connecting pieces 24, and each of them is separately moved. You.

As a result, the weight and size to be moved by the operator are reduced by half, and the transport of the machine body is facilitated.

When the body is mounted on the trunk m of the tree to be pruned, each lock lever 7a is operated to the open side so that the mounting portion A1 is moved along one side of the trunk m as shown in FIG. After locating one idler wheel 9 on the side opposite to the mounting portion on the trunk m,
By operating the lock lever 7a to the lock side, the lock lever 7a is set up as shown in FIG.

Subsequently, each of the springs 2
The 0 end is locked to the locking plate 23. In this state, the rod member 18 rotates around the shaft 17 and the connecting arm 11 rotates around the longitudinal member 19, so that the four idler wheels 8 are pressed to one side of the circumference of the trunk m. One idler wheel 9 and two lock levers 7a are pressed to the opposite side of the circumference of the trunk m by the reaction force of the pressure. Therefore, the mounting frame A2 holds the trunk m by the two lock levers 7a and the five idler wheels 8, 9, and is in a state of being locked at the base of the trunk m.

Thereafter, the operator lifts the drive unit A1 to position it on the side of the trunk m where the anti-mounting portion exists, and places the tip of each connecting piece 24 on the corresponding supporting piece 25, and 24 and the support piece 25 are fastened with bolts and nuts. In this state, the drive wheel 4 does not completely contact the circumferential surface of the trunk m, and it is preferable that some gap is formed.

Finally, each lock lever 7a is operated to the open side. As a result, the pressing force of the lock lever 7a disappears, and the driving portion A1 is pressed against the trunk m by the spring force via the idler wheel 8, whereby the driving wheel 4 is completely pressed against the trunk m. The percussion machine can run.

Thereafter, the pruning height is set by a pruning height setting mechanism (not shown), the prime mover 2 is operated, and the drive wheels 4 and the chain saw 1 are operated, as in the prior art. As a result, while the body is spirally raised by the rotation of the drive wheels 4, it is pruned by the chain saw 1, rises to a set height, and then automatically reverses the drive wheels 4 to descend to the m-th trunk.

When the pruning of one tree is completed,
The motor 2 is stopped, and the driving unit A
1 and the mounting part A2 are separated from each other and removed from the trunk m.

Next, a description will be given of a pruning machine according to a second embodiment of the present invention. FIG. 3 is a view showing a state in which the pruning machine is locked on a trunk.

The pruning machine of this embodiment comprises a driving section A1 and a mounting section A2 on which the driving section A1 is mounted, as in the previous embodiment.

Each of the driving unit A1 and the mounting unit A2 has an independent integral structure, as before, and the driving unit A1 has the same configuration as the above.

On the other hand, since the mounting portion A2 has almost the same configuration as that of the previous embodiment, the same portions are denoted by the same reference numerals and the description thereof will be omitted, and only the characteristic portions will be described. That is, the specific range structure portion 26 between the left and right end portions is made removable. Specifically, each main frame 6
a and 6b are cut at two points k1 and k2, and these cut points are joined together by a simple operation so that they can be joined and separated.
7 and bolts and nuts.

The mounting portion A2 is provided with a reinforcing frame A3 connecting the left and right ends of the mounting portion A2 so as to surround the outside of the driving portion A1.

The reinforcing frame A3 is composed of two substantially semicircular pipe members 28, each of which is connected to each of the main frames 6a,
The main frames 6a and 6b are connected to the main frames 6a and 6b to form a circle.

Then, the pipe member 28 and the main frames 6a, 6
The connection point b is connected by a connecting piece 29 and a bolt / nut so that the connection point can be connected by a simple operation or can be separated in reverse.

The pruning machine configured as described above is, for example,
Used as follows: That is, when the worker is an elderly person or when there is no assistant, the pipe member 28 forming the reinforcing frame A3 is removed from the mounting part A2 in the state shown in FIG.

The pruning machine in this state is substantially the same as that of the previous embodiment, and is used in the same manner as described above. Thereby, the handling weight and size of the worker are reduced by half, and the work can be performed easily.

On the other hand, if the worker is a healthy person or an assistant exists, the reinforcement frame A3 is mounted as shown in FIG. 3 and only the specific range structure portion 26 is removed. At this time, since both ends of the main frames 6a and 6b are firmly supported by the reinforcing frame A3, the required rigidity of the mounting portion A2 is secured.

In the use of the pruning machine in this state, when the body is moved from tree to tree, it is carried as a unit.

When holding the trunk m, the end of the spring 20 is detached from the locking plate 23, and then the support arm means 13 is rotated outward around the axis 17 to thereby rotate the four idler wheels 8.
Is retracted from the inside of the mounting frame A2 to the outside, and under this state, the mounting portion A2 and the reinforcing frame A3 are externally fitted to the trunk m through a space formed by removing the specific range structural portion 26. Thereafter, the support arm means 13 and the idler wheel 8 are returned to the original state, and each spring 20
Is hooked on the locking plate 23.

As a result, the three drive wheels 4 and the five idler wheels 8 and 9 hold the trunk m, and the pruning machine can run, and is operated according to the above.

Such a use is made by the driving unit A1 and the mounting unit A2.
Need not be carried separately, and even when attached to the trunk m, there is no need to separate and connect them each time, and handling during work is simplified.

In this embodiment, the main frames 6a, 6a
A portion k3 near the end of b can be bent in the horizontal direction. In this case, when the reinforcing frame A3 is not used, it is fixed, and when the reinforcing frame A3 is used, it can be bent freely. .

By doing so, the main frames 6a, 6b
Is rotated around the location k3 to form a large space through which the trunk m passes, thereby facilitating the work of externally fitting the body to the trunk m.

In each of the above-described embodiments, the branch A2 where the chain saw 1 does not exist is apt to be caught by a branch or a sword. However, the main frame 6a,
6b and the like function as guides for preventing them from catching and act to remove them. Therefore, the interruption of the work conventionally caused by such catching is avoided.

[0053]

According to the present invention described above, the weight and size of a portable device can be greatly reduced.
Therefore, even if it is an unhealthy person such as an elderly person, or there is no assistant, or even when working in a place with poor scaffolding such as a steep slope, the pruning work can be performed relatively easily and with less risk. Become.

Further, since the body is simply divided into the driving unit and the mounting unit, it is easy to perform the operation of the driving unit, which has many narrow parts and is difficult to maintain.

According to the second aspect of the present invention, the weight of the portable unit can be reduced by half, and the number of modifications and mechanisms required to make each of the drive unit and the mounting unit independent is small. It will be simple.

According to the third aspect, there is no member for mounting the drive unit on the drive unit side, and the structure is simple and lightweight.

According to the fourth aspect, the pruning operation can be performed by holding the trunk without separating the driving unit and the mounting unit. In such situations, efficient work can be performed in this state.

According to the fifth aspect of the present invention, the mounting portion can be easily locked to the trunk by the locking action of the locking means to the trunk, and the drive is performed after the mounting portion is locked. Since the parts are mounted, the lifting weight of the worker is reduced. Accordingly, there is no need for an auxiliary tool for supporting the weight of the body, which is conventionally used when mounting the body on the trunk.

[Brief description of the drawings]

FIG. 1 is a view showing a pruning machine according to a first embodiment of the present invention, showing a state in which the body is locked to a trunk.

FIG. 2 is a view showing a drive unit of the pruning machine according to the first embodiment.

FIG. 3 is a view showing a pruning machine according to a second embodiment of the present invention, showing a state where the body is locked to a trunk.

[Explanation of symbols]

 A1 Drive unit A2 Mounting unit A3 Reinforcement frame m Trunk 1 Chain saw 2 Motor 3 Power transmission device 4 Drive wheel 6 Frame frame 7 Locking means 8, 9 Idling wheel 10 Spring pressing means 26 Specific range structure location

Claims (5)

[Claims] 1. A pruning machine in which a driving unit and a mounting unit on which the driving unit is mounted embrace a trunk circumference and helically move up and down, and cut branches with a chain saw of the driving unit during ascending. A pruning machine characterized in that each of the drive unit and the mounting unit has an independent integrated structure, and both are connected and separated by a simple operation. 2. A frame frame in which a drive unit includes a prime mover, drive wheels, and a power transmission device for transmitting power of the prime mover to the drive wheels and a chain saw, while a mounting unit is provided along a trunk circumference. 2. The pruning machine according to claim 1, further comprising: an idler wheel mounted on the main body; and a spring pressing means for pressing the idler wheel against the trunk circumference. 3. The drive unit is configured to surround substantially half of one side of the trunk circumference, and the mounting unit is configured to surround substantially half of the other side of the trunk circumference. The pruning machine according to claim 1 or 2, wherein the part is attached to and detached from the trunk by joining and separating the parts. 4. A reinforced frame for connecting the left and right ends of the mounting portion so as to surround the outside of the driving portion, and a specific range structural portion between the left and right ends of the mounting portion is removable. ,
4. The pruning machine according to claim 3, wherein the reinforcing frame and the specific area structure portion are detachably attached by a simple operation. 5. A lock in which the mounting portion cooperates with an idler wheel pressed against the trunk circumference by the elasticity of the spring pressing means to temporarily lock the mounting portion at a specific position on the trunk. 5. The pruning machine according to claim 3, wherein the pruning machine is provided with a means.