JPH0880128A - Trunk processor - Google Patents

Abstract

PURPOSE: To provide a trunk processor capable of surely and stably moving and accurately cutting a trunk without damaging it. CONSTITUTION: A length measuring device 6 equipped with an endless belt for detecting length freely rotatably around a periphery along a longitudinal direction face is installed at the lower part of a base frame 3. Each grapple arm 5 is equipped through an arm member 12 to be rocked and driven around a horizontal shaft 4 in the longitudinal direction set at the relatively higher position of the grapple arms with a material sending device 13 furnished with a material sending endless belt 15 to be brought into contact with the lower side part of a trunk under pressure rotatably around a periphery along a longitudinal direction face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to grasping and moving an appropriate number of tree trunks that have been felled and accumulated in a forest, or pruning or measuring the length of each trunk. The present invention relates to a trunk processor used for cutting while cutting.

[0002]

2. Description of the Related Art Known trunk processors have been developed overseas and their basic structures are a grapple mechanism for grasping the trunk, a feeding mechanism for sending the grasped trunk in the horizontal direction, and a trunk mechanism for transmitting the trunk in the horizontal direction. It consists of a pruning knife to remove the branches, a length measuring mechanism for measuring the feed length of the trunk, and a cutting mechanism for cutting the trunk to an appropriate length. There is a problem as follows.

[0003] In other words, the surface of the trunk is frequently damaged due to the fact that the trunk is given an unnecessarily large feeding power, and such damage lowers the market value of Japanese cedar and cypress wood. It is hard to overlook. In particular, the degree is remarkable in the one disclosed in JP-A-2-41201.

Further, there is a tendency that the accuracy of the cutting length of the trunk is not so strictly required for the trunk processing abroad, as compared with the domestic timber,
The length measurement accuracy is about ± 1 to 2%, which is insufficient in Japan.

Further, in US Pat. No. 4,239,067, the four circumferences of the trunk are supported by the feed rollers, so that the trunk is not stably supported during feeding. Due to the presence of the feed roller, the length device has to be arranged either before or after the feed roller, and the entire length of the machine becomes large.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a trunk processor capable of simultaneously realizing the contents described in the following items. I. When sending the material in the longitudinal direction while grasping the trunk, make sure that the trunk surface is not damaged by the material feeding device,
Improve the commercial value of treated materials. B. The present invention makes it possible to stably and surely feed a tree trunk and to make the length measurement at the time of the feeding high in accuracy, thereby preventing cutting with a large error and improving the yield of a processing material. C. Secure a large space for grasping the trunk,
Increase the efficiency of the accumulation work. D. Make the aircraft compact.

[0007]

In order to achieve the above object, the present invention is capable of swinging a grapple arm through horizontal shafts in the front-rear direction on left and right sides of a basic frame which is driven to rotate about a vertical axis. A tree trunk processor attached to
A length measuring device having an endless belt for length detection abutting on the top of the trunk is operably mounted along the front-rear direction surface at a lower portion of the basic frame, and each grapple arm has the same. The endless belt for feeding material pressed against the lower side of the tree trunk is driven to circulate along the front-rear surface through an arm member that is swingably driven around a horizontal axis in the front-rear direction provided at a relatively upper portion. It is characterized in that a material feeding device which is mounted as possible is provided.

In the above invention, in order to make the feeding of the tree trunk more reliable, it is possible to drive the endless belt for length detection in a circular manner.

[0009]

[Function] When used as a device for grasping and moving the trunk group, the material feeding device is swung outward around a horizontal axis in the front-rear direction provided on the grapple arm, and the inner side of a pair of grapple arms. A large trunk space can be secured, and many trunks can be grasped in the space.

When the tree grasped horizontally by the grapple arm is fed in the longitudinal direction, the pair of material feeding devices are swung so as to be in a state of being projected to the inner surface side of the grapple arm. Thus, the pair of feeding devices simultaneously support the lower side parts of the tree trunk and press the upper part of the tree trunk against the length measuring device.

In this case, the material feeding device supports the tree trunk by contacting the trunk surface in a long linear manner with a relatively wide flat surface of the material feeding endless belt, and the length measuring device is used for the length detection endless belt. The relatively wide and flat surface of the body touches the trunk surface in a long line to press the trunk.

The pair of feeders and one length measuring device can be arranged on the same cross section of the trunk, thereby shortening the overall length of the machine.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an embodiment of a processor according to the present invention, FIG. 2 is a diagram showing the main parts thereof with solid lines, and FIG. 3 is a front view showing the operation of the main parts when grasping the trunk. FIG. 4 is a view showing a usage state of the processor, FIG. 5 is a front view showing a state of grasping a trunk group by the processor, and FIG. 6 is a front view showing a state of feeding the trunk horizontally. Is.

Reference numeral 1 denotes a suspension member whose upper end is fixed to the tip or the like of an arm operated by hydraulic pressure. A basic frame 3 which is driven to turn around a vertical axis by a hydraulic motor 2 is fixed to a lower end. .

A grapple arm 5 is mounted on each of the left and right sides of the basic frame 3 via a horizontal shaft 4 in the front-rear direction f1, and these two arms 5, 5 are moved around the horizontal shaft 4 by a hydraulic cylinder (not shown). It is designed to be symmetrically driven to swing.

Reference numeral 6 denotes a length measuring device mounted on the lower central portion of the basic frame 3, and as shown in FIG. 2, an endless strip 7 for length detection, which is formed by continuously connecting short plates 7a, Through the guide wheel mechanism 8 mounted on the basic frame 3, it is mounted so that it can be orbitally displaced along the standing surface in the front-rear direction, and the orbital movement of the endless belt 7 is detected and a number proportional to the amount of movement is detected. A pulse counter 9 is provided for sending pulses to a control device (not shown) provided in the basic frame 3 or the like.

Although the endless band 7 for detecting the length is positively driven to rotate by a hydraulic motor 10 fixed to a guide wheel mechanism 8, it is not always necessary to drive. Absent.

At the center of the front-rear direction f1 of each grapple arm 5, a material feeding device 13 is provided by a hydraulic cylinder 11 so that the horizontal shaft 4 (in addition to this, a front-rear horizontal shaft provided relatively above the grapple arm 5). It may be provided) via an arm member 12 which is swingably driven around.

Each feeding device 13 has a feeding endless belt 15 mounted on a guide wheel mechanism 14 fixed to the arm member 12 so as to be freely displaceable around the front-rear direction surface. A hydraulic motor 16 for driving the orbit 15 in a specific direction f4 is fixed to the guide wheel mechanism 14, and when each arm member 12 is swung inward f2 around the horizontal axis 4, two endless belts 15 are formed. , 15 are pressed against each side of the lower surface of the trunk w regardless of the diameter of the trunk w as shown in FIG. 3. In this case, the endless strip 15 conforms to the strip 7 described above. Is made.

Reference numeral 17 denotes a head knife fixed to the front portion of the basic frame 3, and reference numerals 18 and 18 are provided at slightly lower positions on the respective sides thereof so as to be swingable around a spindle 19 mounted on the frame 3. Side knife, and 20 and 20
Is an under knife provided to be able to swing around a support shaft 21 provided on each grapple arm 5.

Reference numeral 22 denotes a chain saw provided at the rear of the basic frame 3 for cutting the trunk of the tree, and as shown in FIG. 4, rotation of the hydraulic motor 23 causes the cutting blade chain 24 to orbit the chain sover 25 and According to a command from the control device, the whole is oscillated in a direction of an arrow f3 along a vertical surface by a hydraulic cylinder (not shown).

An example of use and operation of the product of the present invention configured as described above will be described.

The upper end of the suspension member 1 is fixed to the tip of an arm extended so that it can be bent and operated from the self-propelled vehicle device with a bolt or the like, so that the basic frame 3 is in a suspended state. It is made to move to the place where piles of felled tree trunks are used.

When the product of the present invention is simply used as a grapple device, the hydraulic cylinders 11 and 11 are operated to operate as shown in FIG.
As shown in FIG. 5, the material feeding devices 13, 13 are swung outwardly of the brachle arms 5, 5, whereby the material feeding devices 13, 13 are brought into a pair of grapple arms 5, 5.
It is in a state of being withdrawn from the grasping space s on the inner surface side of the.

Under this condition, the grapple arms 5, 5
Is opened and closed to grasp the trunk w group as shown in FIG. 5, lift it, move it to an appropriate place, and release it. A pair of grapple arms 5, 5
Can grasp many trunks w groups in the grasping space s which can be secured as wide as possible, thereby enabling efficient work.

When used as a pruning device, first, by operating it as a grapple device, one trunk w
Of the hydraulic cylinder 1
As shown in FIG. 3, the material feeding devices 13, 13 are actuated by actuating the first and the first parts 11 and 12 to the inside f2 of the grapple arms 5, 5.
It swings around the horizontal shafts 4 and 4 toward the f2 side to support each side portion of the lower surface of the tree w with an appropriate force. The stem w is pushed up on the outer surfaces of the endless strips 15, 15 of the material feeding devices 13, 13, and the upper portion thereof is lifted by the endless strips 7 of the length measuring device 6.
And is stably supported on the same circumference of the trunk w by the relatively wide and long flat outer surfaces of the three endless strips 7, 15, 15 on the same circumference of the trunk w. w The outer periphery is slightly separated from the inner surfaces of the grapple arms 5, 5 by the reaction force of the pressing force by the hydraulic cylinders 11, 11. On the other hand, the side knives 18, 18 and the under knives 20, 20 are swung by the operation of a hydraulic cylinder (not shown), and the three types of knives 17, 18,.
As shown in the figure, the outer circumference of the trunk w is in a state. Thereafter, the endless belts 15, 15, 7 of the material feeding devices 13, 13 and the length measuring device 6 are circulated in the specific directions f4, f4, f4 shown in FIG. 2 by the operation of the hydraulic motors 16, 16, 10. The trunk w is fed and moved at an appropriate speed toward the stem side f5 as shown in FIG. 4. At this time, the laterally protruding branches collide with any of the knives 17, 18,. It is pruned as if cut off with.

In this pruning process, the endless belt 15,
Since 15 and 7 are in contact with the outer periphery of the trunk w in a relatively wide area and in a long linear shape, even if there are large irregularities on the trunk surface, the surface pressure of the strips 15, 15, and 7 on the trunk surface is small. Nevertheless, the feeding force of the material feeding devices 13, 13 and the length measuring device 7 is effectively transmitted to the trunk w,
The trunk surface is reliably sent between the endless strips 15, 15, 7 without slipping, and is prevented from being damaged by the strips 15, 15, 7.

When used as a cutting device, when the pruning process is performed after the trunk root of one of the trunk groups after pruning is grasped in the same manner as described above by operating as a grapple device and a pruning device. Similarly to the above, the material feeding devices 13 and 13 and the length measuring device 6 are operated, and the trunk w is shown in FIG.
The pulse counter 9 of the length measuring device 6 operates in conjunction with the endless band 7 in the course of this movement in accordance with the amount of movement of the band 7 in the course of this movement. The number of generated pulses is transmitted to a controller (not shown). The control device determines the feed dimension of the trunk w by this pulse, and when this dimension reaches a preset cutting length L, the circulation operation of the endless strips 15, 15, 7 is stopped and the hydraulic pressure (not shown) is set. By operating the cylinder, the chain saw 22 is swung in the direction of the arrow f3, and the cutting blade chain 24, which is rotated by the hydraulic motor 23, is cut into balls. Thus, when one ball cutting process is completed, the grapple arms 5 and 5 again grasp the next tree trunk w, and feed and move the same to the material feeding devices 13 and 13 and the length measuring device 6 as described above. The next ball cutting is performed.

Even in this cutting process, the endless belt 15,
Since 15 and 7 are relatively wide flat surfaces and come into contact with the tree trunk w in a long linear shape to reliably and stably feed and move, the length measuring device 6
Can accurately measure the feed dimension of the trunk w, and the trunk w is cut to an accurate length.

[0030]

According to the present invention configured as described above, the endless strips of the pair of material feeding devices and the length measuring device make a long linear contact with the circumference of the tree trunk and a relatively wide flat surface to form a pair of feeding members. Since the lumber device feeds the trunk while supporting the trunk on each side of its lower surface,
The trunk is sent stably and reliably in a specific direction, and the length measurement by the length measuring device is high, cutting with little error is possible, and the yield of treated material is improved. This prevents the body from slipping on the trunk surface and damaging the trunk surface, which can maintain the commercial value of cedar and cypress in particular, and the material feeding device swings out of the grapple arm. As a result, it is possible to grasp a large number of trunk groups in the same arm and to increase the efficiency of the accumulation work. The long device is arranged on the same cross section of the trunk, thereby making the body compact.

According to the second aspect of the invention, the endless belt of the length measuring device gives a feeding force to the trunk,
The trunk can be more reliably fed and moved.

[Brief description of drawings]

FIG. 1 is a diagram showing one embodiment of a processor according to the present invention.

FIG. 2 is a diagram showing a main part of the processor by a solid line.

FIG. 3 is a front view showing an operation of a main part when the tree trunk is grasped by the processor.

FIG. 4 is a diagram showing a use state of the processor.

FIG. 5 is a front view showing a state in which a tree trunk group is grasped by the processor.

FIG. 6 is a front view showing a state in which the tree trunk is fed horizontally by the processor.

[Explanation of symbols]

 Reference Signs List 3 Basic frame 4 Horizontal axis 5 Grapple arm 6 Length measuring device 7 Endless band for length detection 12 Arm member 13 Feeding device 15 Endless band for feeding

Claims (2)

[Claims] 1. A tree processor in which a grapple arm is oscillatably mounted on each of the left and right side portions of a basic frame which is driven to rotate about a vertical axis through horizontal axes in the front-rear direction, and which corresponds to the top of the tree trunk. A length measuring device is attached to the lower part of the basic frame, and an endless strip for length detection is attached to the lower part of the basic frame, and is mounted relatively above the grapple arms. An endless belt for feeding material, which is pressed against the lower surface of the tree trunk, is mounted so as to be able to circulate along the front-rear direction surface via an arm member that is oscillated about a horizontal axis in the front-rear direction. A tree trunk processor, which is provided with a material feeding device. 2. The trunk processor according to claim 1, wherein the endless strip for length detection can be driven to rotate.