JPH07317100A - Wood collecting machine - Google Patents

Abstract

PURPOSE:To improve working efficiency by a method wherein a working vehicle is provided with a working machine consisting of a first boom, an arm, and a bucket and a working machine consisting of a second boom and a winch. CONSTITUTION:When an arm cylinder 16 is expanded, a second boom 14 is rotated into an erected posture and an arm 12 is rotated into an approximately vertical posture and a bucket 13 touches a ground. The second boom formed integrally with the arm 12 is prevented from falling owing to a load exerted by a wire rope 5 wound around and between winches 2A and 2B and a forest work wherein the second boom 14 is used as a tower is carried out. Further, by inserting a pin 20 when the pin hole of a side plate coincides with the pin hole of the boss of a first boom 11 during rise and fall of the second boom 14, the second boom 14 is fixed in a state to be overlapped with the first boom 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a logging machine for gathering trees in a mountain forest, and in particular, in addition to the work of constructing a forest road by an excavator or constructing a gathering place, the excavator collects timber. The present invention relates to a timber logging machine that is also equipped with a tower for forestry work.

[0002]

2. Description of the Related Art Conventionally, a hydraulic excavator has been introduced to improve workability in the forestry field, but this is mainly for the construction of forest roads. As shown in the conventional example, one end of the wire 23 is wound around the drum winch 22 mounted on the hydraulic excavator 21, and the other end is fixed to the logging 25 via the guide pulley 24 so that the wire is collected. There is.

However, according to the gathering by the drum winch 22 mounted on the hydraulic excavator 21 of the conventional example shown in FIG. 8, the wire hoisting device fixed to the free end of the wire 23 pulled out from the drum winch 22 is used. Since the trees 25 are attracted to each other, the work efficiency is low, and the collecting area is limited to the vicinity of the hydraulic excavator 21.

[0004] Therefore, the applicant has devised and applied for an overhead wire collecting device using a hydraulic excavator shown in FIG. 9 in order to improve the above drawbacks. The present invention relates to a gathering operation between one collecting station S1 and another collecting station S2 which have different heights such as a mountain side and a valley side, and one collecting station S1
Two drum winches 32 and 33 are attached to the hydraulic excavator 31 arranged at. At the other collecting station S2, standing trees are used, or a fixed pulley 35 is attached to the erection means 34 installed. The working machine 36 of the excavator 31 is composed of a boom 36a, an arm 36b, a bucket 36c and the like, and a plurality of guide pulleys 37 are provided in the left-right direction at the tip of the boom 36a. Further, the fixed pulley 35 and the drum winch 3
An endless wire 38 and a main wire 39 are wound around the pulleys 2 and 33 via the pulley 37. Then, the tree 41 is attached to the endless wire 38 by the hanging device 4
It is suspended by 2 and can be transferred between the collecting stations S1 and S2 as the endless wire 38 rotates. In the figure, reference numeral 40 denotes a moving pulley which is movable around an endless wire 38.

The above-mentioned work requires a base for temporarily collecting the felled trees on the mountain side and the valley side before transferring them. Therefore, in addition to logging, excavators are used to install such an accumulation base.

[0006]

However, in the case of the conventional example shown in FIG. 9, since the guide pulley 37 is attached to the tip of the boom 36a, the load applied to the endless wire 38 and the main wire 39 during the forestry work. The excavator body becomes unstable with the danger of tipping. Further, if the height of the endless wire 38 or the main wire 39 stretched between the logging bases S1 and S2 is low, the transferred logging 41 may collide with the stumps or rocks of the slope 43, and as high as possible. However, the structure of the conventional hydraulic excavator cannot solve the contradiction that even if the guide pulley is attached to the end of the arm 36b, the height problem is solved but the stability is further deteriorated.

[0007] The present invention provides a forestry logging machine capable of stably performing earthmoving work such as collecting and loading, or ground leveling with one unit by simply modifying a conventional hydraulic excavator. It is intended to be provided.

[0008]

In order to achieve the above object, the present invention is to stop a work vehicle having a winch at one of the gathering bases, install a pulley at the other gathering base, and to connect the pulley and the winch. In forestry work in which a wire rope is wound in between and the timber felled from one of the logging bases is transferred to the other of the logging bases via the wire rope The work machine including the boom, the arm, and the bucket, the work machine including the second boom used for the lumber collecting work, and the winch are provided so that a single machine can perform the work.

Further, the lumber logger has an upper revolving structure on a lower traveling body, and one end of a second boom that can be hoisted is rotated at a base end of an arm of the earthworking machine provided on the upper revolving structure. A plurality of pulleys movably connected to each other and provided with a plurality of pulleys at the open end of the second boom, and the winch for winding and lowering the wire rope wound around the pulleys is attached to the rear portion of the upper swing body. Is.

In the above structure, the second boom is connected so as to rotate about the connecting pin of the first boom and the arm, and has a stable structure which is fixed to the back surface of the first boom when it falls down. It is a thing.

Similarly, the second boom can be raised and lowered by expanding and contracting an arm cylinder for rotating the arm mounted for the earthworking work.

Further, the second boom is provided with a connecting portion with an arm on the outside of the connecting portion between the first boom and the arm, and connects the first boom, the second boom and the arm with the same pin. Is.

In addition, the second boom is provided with a standing pin that engages with the hole of the boss portion fixed to the connecting portion of the arm cylinder outside the arm and the arm cylinder connecting pin. .

The second boom is a fulcrum for preventing overturning by installing a bucket at the tip end of the arm integrally with the arm on the ground during work.

[0015]

[Operation] According to the forestry logging machine configured as described above,
Since forestry work and loading work can be done by one machine, work on narrow uneven terrain becomes possible.

That is, in forestry work, since the second boom is erected on the arm and the bucket below the arm is grounded to prevent the second boom from tipping over, it is possible to reliably transfer the felled wood. Further, in the ground leveling and loading work, by folding the second boom on the first boom, the work as a normal shovel can be performed.

The second boom can be erected by extending the existing arm cylinder, and when the second boom is erected, it can be detached by attaching / detaching the pin of the connecting portion and attaching / detaching the pin of the connecting portion with the boom.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS. The forestry logging machine 1 according to the present invention is used for forestry work. That is, the forestry work means, as shown in FIG. 1, a work vehicle having winches 2A and 2B is stopped at one of the logging bases S1 and one of the trees planted at the other logging base S2 is used. As the pillar 3, one pulley 4 is installed here, and the pulley 4 and the winch 2A,
A wire rope 5 is wound between 2B via a work vehicle, and a hanging tool 6 is provided on the wire rope 5. Then, the lumber felled from the logging base S1 or S2 is moved by the wire rope 5 to the wood suspended from the logging base S2 or S1 by the hanging tool 6. The forestry logging machine 1 as a work vehicle in such forestry work enables both the forestry work and the leveling and excavating work of the logging base. In addition, in FIG. 1, 7.8 is a pulley fixed to the ground, and 9 is a wire rope that suppresses the movement of the hanger 6.

As shown in FIGS. 2 and 3, the structure of the forestry logging machine 1 is a lower traveling body 1A and an upper revolving body 1.
B is a hydraulic excavator in which the upper boom 1B is provided with the first boom 11, the arm 12 and the bucket 13. A second boom 14 which can be raised and lowered is rotatably connected to the base end of the arm 12, and
A plurality of pulleys 15 are provided in a plurality of rows at the open end of the boom 14, and a winch 2A provided at a rear portion of the upper revolving structure 1B,
The wire rope 5 wound around the pulley 15 is wound up and down by 2B.

Since the second boom 14 is raised and lowered by extending and contracting the existing arm cylinder 16 provided on the rear surface of the first boom 11, the forestry work by the tower can be performed by standing it up and the conventional boom cylinder can be folded down. Excavator work can be performed by selecting and using one forestry logging machine 1.

The detailed structure of the second boom 14 is as shown in FIGS. 4 and 5, both side plates 14 having appropriate intervals.
a, and a plate member 14b and a boss 14c that connect between the two. The first boom 11 and the arm 12 are attached to the first boom 11 which is attached so as to sandwich the end 12a of the arm 12 as shown in a portion a of FIG.
The bosses 14c, 14c on one side of the second boom 14 are attached so as to come into contact with the end 11a of the second boom 14 from both sides.
The boom 11 is connected to the arm 12 and the boss portion 14c of the second boom 14 by the same pin 17 penetrating therethrough, and the pin 17 portion is used as a rotation fulcrum. The second boom 14
When pivoting around the pin 17 in the direction of falling down, it overlaps the back surface of the first boom 11.

Further, as shown in FIG. 6B, the arm 12
The rod end 16a of the arm cylinder 16 that rotates the
The arm 12 is attached to the tip of the arm 12 via a mounting pin 18.
Arm 1 around this mounting pin 18
Holes 12c are formed in the 2 side part and the head of the pin 18, respectively.
Bosses 12b and 18a having and 18b are fixed, respectively. The second boom 14 has a pin 18
The pins 19 which coincide with the axis of the bosses 12b and 18a provided on the axis of the holes 12c and 18b from both sides.
It is adapted to be integrally connected to the arm 12 by being inserted into.

Therefore, when the arm cylinder 16 is extended, the second boom 14 is rotated from the solid line position in FIG. 4 to the two-dot chain line position as shown by the arrow to be in the standing posture, and at the same time, the arm 12 is also moved from the solid line position to the arrow. As described above, since it pivots to the position indicated by the two-dot chain line and assumes a substantially vertical posture, the bucket 13 provided at the tip of the arm 12 lands (see FIG. 2) to form a fulcrum and stabilize. As a result, the second boom 14 integrated with the arm 12 is prevented from falling or the like due to the load received from the wire rope 5, whereby forestry work using the second boom 14 as a tower can be performed.

Further, the both side plates 14a of the second boom 14 are provided with pin holes 14b as shown in FIG. A boss 11b is fixed to the outside of both side plates of the first boom 11 corresponding to the pin hole 14b, and a pin hole 11c having the same thickness as the pin hole 14b is formed in the boss 11b. Therefore, when the second boom 14 falls down, the pin hole 14
b and the pin holes 1 of the bosses 11b on both sides of the first boom 11.
When the pin 20 is inserted when they coincide with 1c, the second boom 14 is fixed so as to overlap with the first boom 11.

However, in this case, the pin 19 is connected to the second boom 1
4 to prevent the second boom 14 from standing up even if the arm cylinder 16 is accidentally extended. As a result, the wood collecting machine 1 can perform the excavation and loading work as in the conventional hydraulic excavator.

[0026]

Since the present invention is constructed as described above, it has the following effects.

[0027] collecting timber felled in forestry work,
Since excavation and loading work with a shovel can be performed by one work vehicle, work efficiency is improved.

When the second boom is used as a tower, the fulcrum is secured by the integrated arm, and the tower can be used in a stable posture.

When the second boom is not used, it is stored on the rear surface of the first boom, so that the shovel work can be performed without any trouble. Since the second boom is mounted on the same axis as the first boom and the arm are mounted, it is easy to process and can be easily mounted and dismounted.

Further, since the second boom can be raised and lowered by expanding and contracting the existing arm cylinder, the second boom can be easily mounted on the hydraulic excavator which is the main body, and the remodeling costs associated therewith can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of a forestry work using a forestry logging machine according to the present invention.

FIG. 2 is an external side view of a forestry logging machine according to the present invention.

FIG. 3 is an external perspective view of a forestry logging machine according to the present invention.

FIG. 4 is a side view of a second boom portion that is an essential part of the present invention.

FIG. 5 is a plan view of FIG.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a sectional view taken along line BB of FIG.

FIG. 8 is an explanatory diagram showing an example of a conventional wood transfer device.

FIG. 9 is an explanatory view showing another example of a conventional wood transfer device.

[Explanation of symbols]

 1 Wood collecting machine 1A Lower traveling body 1B Upper revolving structure 2A, 2B Drum winch 3 Strut 4 Pulley 5 Wire rope 6 Lifting tool 11 First boom 12 Arm 13 Bucket 14 Second boom 15 Pulley 16 Arm cylinder

Claims (7)

[Claims] 1. A work vehicle having a winch is stopped at one of the gathering bases, a pulley is installed at the other gathering base, and a wire rope is wound between the pulley and the winch to provide one of the gathering bases. In a forestry work vehicle configured to transfer timber felled from the other to the other of the logging bases via the wire rope, an earthworking machine comprising a first boom, an arm, and a bucket used for earthworking in the work vehicle, A timber gathering machine comprising both a second boom used for lumber gathering work and a working machine comprising the winch. 2. The lumber logger has an upper revolving structure on a lower traveling body, and one end of a second boom capable of undulating is rotated around a base end of an arm of the earthworking machine provided on the upper revolving structure. Movably connected to the second boom, and a plurality of pulleys are provided at the open end of the second boom to wind up the wire rope wound around the pulleys.
The lumber collecting machine according to claim 1, wherein the winch for lowering is attached to a rear portion of the upper swing body. 3. A structure in which the second boom is connected so as to rotate around a connecting pin of the first boom and the arm, and is fixed to the back surface of the first boom when the user falls down. The timber logging machine according to claim 2. 4. The lumber collecting machine according to claim 2, wherein the second boom can be raised and lowered by expanding and contracting an arm cylinder for rotating an arm mounted for the earthworking work. 5. The second boom has a connecting portion with an arm provided outside the connecting portion between the first boom and the arm, and connects the first boom, the second boom and the arm with the same pin. The timber collecting machine according to any one of claims 2 to 4, characterized in that: 6. The second boom is provided with a standing pin that engages with a hole in a boss portion that is fixed to a connecting portion of the arm cylinder outside the arm and an arm cylinder connecting pin. The timber collecting machine according to any one of claims 2 to 5. 7. The timber collecting machine according to claim 2, wherein the second boom has a bucket at the tip of the arm, which is integrated with the arm, installed on the ground when working, as a fulcrum for preventing overturning. .