JP2003018928A - Root cutting attachment and root cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a root cutting attachment and a root cutting machine with which a channel around tree roots for tree transplantation is efficiently dug out. SOLUTION: This root cutting attachment 6 is directly or through a bracket to an operation arm 5 of the machine 1. The root cutting attachment 6 is constituted of a ripper 7 to be fixed and attached to the operation arm 5 or the bracket and a cutter 8 which is ahead of the ripper and openably and closably fixed to the ripper 7 by a hydraulic cylinder 30. The ripper 7 has a point formed into a sharpened shape and is provided with a channel digging function. The channel around the tree roots is dug out by operating the operation arm 5 and dug out around the ripper 7. When channel digging is obstructed by roots, the roots are nipped between the cutter 8 and the ripper 7 and cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root cutting attachment for use in landscaping and the like, which is used for root cutting and root cutting of a tree when it is dug up and transplanted with a root. Regarding work machines.

[0002]

2. Description of the Related Art As an attachment for cutting roots of trees for transplanting trees, for example, Japanese Patent Laid-Open No. 6-34335.
There is one described in JP-A-6. The root cutting attachment described in the publication includes a scissors-shaped root cutting tool that is attached to the tip of a work arm of a working machine, and a movable tooth in the front is opened and closed with respect to a fixed tooth by a hydraulic cylinder. The digging bucket is mounted rotatably in the vertical direction, and the digging bucket is raised and fixed during root cutting work, and the digging bucket is lowered and fixed to the fixed teeth during digging work.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In landscaping work, as one means for transplanting trees, the soil around the roots is cut into a rectangular parallelepiped shape, and the bottom part of the roots is separated from the soil together with the roots of the trees and transplanted. There are cases. In this case, in the structure in which root cutting is performed by the fixed teeth and the movable teeth, the root circumference cannot be excavated efficiently in a groove shape, and transplantation cannot be performed efficiently.

An object of the present invention is to provide a root-cutting attachment and a root-cutting work machine capable of efficiently excavating a groove around a root for transplantation.

[0005]

The root cutting attachment according to claim 1 is attached to a working arm of a working machine directly or via a bracket to fix a root of a tree, and is fixed to the working arm or the bracket. And a cutter that is provided in front of the ripper so as to be openable and closable with respect to the ripper by a hydraulic cylinder. The ripper is provided with an excavating claw at the tip to have a groove digging function. .

According to a second aspect of the present invention, in the root cutting attachment according to the first aspect, the ripper integrally combines parallel plate-like bodies to form a groove between both plate-like bodies, and on both surfaces of the groove facing the cutter. The opposing blade is provided with a flat receiving blade, and the cutter has a blade on the opposing surface on the ripper side, and the opposing surface is flat, and is fitted into the groove of the ripper by expansion and contraction of the hydraulic cylinder. It is characterized in that it is provided detachably.

A working machine according to a third aspect is characterized by having the root cutting attachment according to the first or second aspect.

In the present invention, the root cutting attachment is attached to the work arm of the working machine, and the ripper is moved to the working machine body side from the hole provided in the vicinity of the root in advance to excavate the groove. When it is difficult to excavate the groove when it is difficult to excavate the groove while excavating the groove, the cutter is driven and the root is sandwiched between the cutter and the ripper to perform root cutting.

If the receiving blade of the ripper and the blade of the cutter are formed so that the facing surfaces are flat, the root debris and the like can be gripped between the tips having a weak cutting force. The root cutting attachment can also be used as a gripping tool.

[0010]

FIG. 1 is a side view showing an embodiment of a working machine equipped with a root cutting attachment according to the present invention. The working machine 1 uses a hydraulic excavator as a base machine, and a revolving structure 4 is installed on a traveling structure 2 via a revolving device 3, and the revolving structure 4 has a boom 5a, a boom cylinder 5b,
A work arm 5 having a multi-joint structure including an arm 5c and an arm cylinder 5d is attached.

Reference numeral 6 denotes a root cutting attachment according to the present invention, which is attached to the tip of the working arm 5. The root cutting attachment 6 comprises a ripper 7 and a cutter 8. The ripper 7, as shown in FIGS. 2 (A) and (B),
The upper part of the two parallel plate members is welded to the mounting bracket 10 and the lower part is welded to the excavation claw 11 (may be bolted) to form the ripper body 9 having the groove 12 into which the cutter is fitted. ing. The excavation claw 11 at the tip of the ripper body 9 has a sharp shape.

The receiving blade 13 of the cutter 8 is fixed to the front surface of the ripper body 9 with bolts 14 (FIG. 3 (B)).
reference). Further, the bracket 10 has a pin hole 20 for coupling with a pin 19 at the tip of the arm 5c, as shown in FIG. Further, the bracket 10 is provided with a mounting arm 18, and the arm 18 is provided with a pin hole 17 for connecting with a bracket 15 provided on the back surface of the arm 5c by a pin 16.

On the other hand, the cutter 8 is shown in FIG.
As shown in (D), a blade 25 is attached by a bolt 24 to the surface of the plate-shaped body that constitutes the cutter body 23 facing the ripper 7.
(See FIG. 3 (B)), and a bracket 28 having a pin hole 27 for coupling with the pin 19 is provided on the upper end of the cutter body 23 as shown in FIG. Further, an arm 33 having a pin hole 32 through which a pin 31 connected to the hydraulic cylinder 30 attached to the arm 5c is inserted is provided.

As shown in FIG. 3A, in the root cutting attachment 6, the bracket 10 of the ripper 7 is connected to the tip of the arm 5c by a pin 19, and the mounting arm 18 is connected to the bracket 15 on the rear surface of the arm 5c. Pin 1
Connect by 6 and install. On the other hand, in the cutter 8, the bracket 28 is connected to the tip of the arm 5c by the pin 19 and the arm 33 is connected to the hydraulic cylinder 30 by the pin 31.

As shown in FIG. 3A, the hydraulic cylinder 3
When 0 is contracted, the cutter 8 is open with respect to the ripper 7, and the hydraulic cylinder 30 is extended to close the cutter 8. When the cutter 8 is closed, the cutter body 23 is fitted in the groove 12 of the ripper body 9 as shown by the chain double-dashed line in FIG. By this closing operation of the cutter 8, root cutting is performed between the edge of the blade 25 and the edge of the receiving blade 13.

FIG. 4 (A) shows the groove 3 around the tree 35 shown in FIG. 4 (B) using the attachment 6 of the above embodiment.
6 shows a working state in which 6 is excavated. When transplanting the tree 35, a hole 39 into which the box-shaped transplant bucket 37 shown in FIGS.

Then, as shown in FIG. 4A, the hydraulic cylinder 30 is extended and the cutter 8 is closed.
The cutter 8 and the ripper 7 in the closed state are put into one side of the hole 39, the arm cylinder 5d is extended, and the working machine 1 is retracted as necessary to move the ripper 8 and the cutter 7 in the arrow X direction. Groove 3 shown in FIG. 4 (B)
Drill 6

When the thick part of the root of the tree 35 is caught during the movement for excavation and the movement of the ripper 8 is blocked, the boom cylinder 5b is extended to pull up the attachment 6 and open the cutter 8 again. The boom cylinder 5b contracts to cause the ripper 8 and the cutter 7 to bite over the root, and the hydraulic cylinder 30 extends to perform root cutting. At the time of this root cutting, since the sharpened claws 11 are provided at the tip of the ripper 7, the ripper 8 can be easily bited into the ground, and the root cutting can be performed easily.

In this way, the tree 35 is removed from the end of the hole 39.
After excavating the groove 36 on both sides of the tree, the tree 35 is excavated by the transplant bucket 37 shown in FIGS. 5 (A) and 5 (B).
Here, the transplantation bucket 37 has a rectangular planar shape, and is attached to the arm 5c of another hydraulic excavator.
That is, the pin 43 is connected to the tip of the arm 5c by using the pin hole 41 of the upper bracket 40, and the link 43 is connected to the hydraulic cylinder 30 and the link 45 attached to the arm 5c by using the other pin hole 42. Pin 4
Connect by 4.

The transplantation bucket 37 has a fork 46 attached to the bottom so that it can be retracted and retracted. As shown in FIG.
Move the hydraulic cylinder 47 attached to the transplant bucket 37 to the arrow a.
When extended in the direction, a link 48, one end of which is connected to the hydraulic cylinder 47, rotates about a shaft 49 as shown by an arrow b, and the rotation of the link 48 causes the fork engaged with the link 48. 46 is configured to project from the bucket 37 as shown by an arrow c and bite into the soil.

Such a transplant bucket 37 is put into the hole 39 after the groove 36 has been excavated as described above, and the hydraulic cylinder 47 is extended to move the hawk 46 from the bottom side of the hole 39 to below the tree 35. Let it go under, and transfer graft 37 to FIG.
The tree 35 is moved in a direction to approach the tree 35 as shown by an arrow d in (B). At this time, the side plate 50 of the bucket 37 is moved along the groove 36 so that a part of the soil on the bucket 37 side of the tree 35 is accommodated in the bucket 37, and then the bucket 37 is pulled up to bring the tree 35 to the ground. Peel it off along with the soil around the roots and load it onto a truck.

Thus, the side plate 50 of the transplant bucket 37 is
By excavating the portion where the moving part moves in advance in a groove shape with the root cutting attachment 6, the transplanting bucket 37 can be easily moved, and the transplanting work can be performed smoothly and efficiently.

Further, since the tip ends of the ripper 7 and the cutter 8 have a smaller cutting force than the base end portion, and the facing surfaces of the ripper body 9 and the cutter body 23 have a width, the root debris cut between the tip ends is not removed. For example, it can be used to remove by pinching or removing obstacles that have fallen around the tree before cutting.
It can be used as a gripping tool.

FIG. 6A is a side view showing another embodiment of the root cutting attachment according to the present invention, and FIG. 6B is a front view showing a combined state of the ripper 7A and the cutter 8A. In the present embodiment, a bracket 52 is rotatably attached to the arm 5c by the hydraulic cylinder 30, a ripper 7A is provided on the bracket 52, and a cutter 8A is attached to the ripper 7A with a pin 53 so as to be openable and closable. A hydraulic cylinder 54 attached to the bracket 52 is connected to the cutter 8A by a pin 55 so that the cutter 8A can be opened and closed by expanding and contracting the hydraulic cylinder 54. 1 to 4 in the figure
The same reference numerals as those shown in FIG. 3 indicate parts and portions having equivalent functions.

In the embodiment shown in FIG. 6, the hydraulic cylinder 30 and links 43 and 4 that are normally used in hydraulic excavators are used.
This root cutting attachment 6A can be attached instead of the backhoe bucket without removing 5, so that when the root cutting attachment 6A is used by exchanging with the backhoe bucket, the exchange attachment / detachment becomes easy.

[0026]

According to the present invention, when excavating a groove on both sides of a tree for transplantation, the groove can be excavated by moving a ripper, and when the excavation of the groove is obstructed by the root, a root cutting attachment is scissors. Since root cutting can be performed by using it like a tree, it is possible to efficiently excavate a groove around the root for transplanting trees. Also, when the box-shaped transplant bucket is moved to take the soil near the tree into the bucket, the side plate of the transplant bucket can be moved along the groove, making it easy to take the root of the tree into the bucket. Become.

Further, when the receiving blade of the ripper and the blade of the cutter are formed so that the facing surfaces are flat, the root debris or the like can be gripped between the tips having a weak cutting force. The root cutting attachment can also be used as a gripping tool, which is convenient for work.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a working machine provided with a root cutting attachment according to the present invention.

FIG. 2A is a side view of the ripper according to the present embodiment,
(B) is a view from the arrow E of (A), (C) is a side view of the cutter of the present embodiment, and (B) is a view from the arrow F of (C).

FIG. 3A is a side view showing an open state of the root cutting attachment according to the present embodiment, and FIG. 3B is a cross-sectional view showing the ripper and the cutter.

FIG. 4 (A) is a side view showing a state of excavating a groove by the root cutting attachment of the present embodiment, and FIG. 4 (B) is a plan view for explaining the excavation of a groove around a tree.

FIG. 5A is a side view showing an example of a transplant bucket;
(B) is a plan view showing a state in which the root portion of the tree is taken into the bucket by the transplanting bucket.

FIG. 6A is a side view showing another embodiment of the root cutting attachment of the present invention, and FIG. 6B is a front view showing a combined state of the ripper and the cutter.

[Explanation of symbols]

1: Working machine, 2: Traveling body, 3: Revolving device, 4: Revolving body,
5: Working arm, 6, 6A: Root cutting attachment,
7, 7A: Ripper, 8, 8A: Cutter, 9: Ripper body, 10: Bracket, 11: Excavation claw, 12: Groove,
13: receiving blade, 15: bracket, 18: mounting arm, 19: pin, 23: cutter body, 25: blade, 2
8: bracket, 30: hydraulic cylinder, 33: arm,
35: tree, 36: groove, 37: transplant bucket, 39:
Hole, 40: bracket, 43, 45: link, 46: fork, 47: hydraulic cylinder, 48: link, 49: shaft,
50: side plate, 52: bracket, 53, 55: pin, 5
4: Hydraulic cylinder

Claims (3)

[Claims] 1. An attachment for cutting trees, which is attached to a work arm of a work machine directly or via a bracket, and a ripper fixedly attached to the work arm or the bracket, and a hydraulic cylinder in front of the ripper. The root cutting attachment is characterized in that it comprises a cutter that can be opened and closed with respect to the ripper, and that the ripper has a digging claw at the tip to have a groove digging function. 2. The root-cutting attachment according to claim 1, wherein the ripper integrally combines parallel plate-like members to form a groove between both plate-like members, and faces the cutter on both sides of the groove. A receiving blade having a flat surface is provided, and the cutter has a blade having a flat surface on the facing surface on the ripper side, and the cutter fits into or disengages from the groove of the ripper by expansion and contraction of the hydraulic cylinder. A root cutting attachment characterized by being installed as much as possible. 3. A root-cutting working machine comprising the root-cutting attachment according to claim 1.