JPH07108165B2 - Felling rooting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention is applied to a front end of a boom of a work machine such as a hydraulic power shovel to form a front attachment, which is used for cutting trees or extracting or cutting roots of tree stumps. Regarding rooting machine.

Conventional technology When clearing a wasteland or a forest, it is necessary to cut trees and remove stumps. Conventionally, trees are felled with a chainsaw and the remaining stumps are manually dug up and removed.

Problems to be Solved by the Invention The work of digging up and removing a stump manually is laborious and requires a great deal of time and labor. Moreover, when arranging a wasteland on a residential land, it is necessary to remove as many rhizomes of trees as possible.

Therefore, an object of the present invention is to provide a felling and rooting machine capable of felling trees and pulling out the roots of stumps.

Means for Solving the Problems The present invention is directed to cutting trees that are attached to the boom tip of a working machine such as a hydraulic power shovel and operated by hydraulic pressure,
The present invention relates to a cutting and rooting machine used for extracting and cutting rhizomes of a stump. The present invention relates to a support attached to a boom tip of a working machine and attached to the support, and at least one middle portion of an arm rotates. A pair of arms rotatably supported and attached, a hydraulic cylinder attached to the rear ends of the pair of arms to open and close the tips of the arms, and a cutting blade fixed to the tips of the arms, By providing a plurality of cutouts on the blade surface of the cutting blade, or particularly, by providing a plurality of cutouts only on the blade tip side blade surface of the cutting blade, the base end of the cutting blade that is the arm shaft attachment side of the arm tip By eliminating the above-mentioned notch over the specified length of the section, it was possible to cut down roots of trees and rhizomes.

Further, a cover protruding from the arm opening / closing surface is attached to the arm shaft support portion of the support to facilitate excavation of a stump.

Action When cutting trees, operate the hydraulic cylinder to open the tip of the arm to which the cutting blade is fixed, position the trunk of the tree between the open arm tips, and operate the hydraulic cylinder to move the arm of the arm. Trees are cut with a cutting blade by closing the tip. Since the cutting blade has a notch on the blade surface, some cutting will be left, but by opening the arm and moving the main cutting root cutting machine itself along the longitudinal direction of the cutting blade. , If you close the arm again, the tree trunk will be cut.

In particular, when a plurality of notches are provided only on the blade surface of the cutting blade on the tip side of the arm tip and no notches are provided on the blade surface of the cutting blade at the base end, the base end portion of the cutting blade You can cut the tree with.

In addition, when pulling out trees, etc., before cutting the trunk of the tree completely, with the cutting blade cutting about half the trunk, set the main cutting root cutting machine itself in the longitudinal direction of the cutting blade, and If you move it upward, the trunk of the tree bites into the notch of the cutting blade, so the tree and the cutting blade do not slip, and you can pull out the tree along with its root as the logging rooting machine moves.

For tree stumps cut with a chainsaw, etc., part of the root is cut with the cutting blade at the tip of the arm and the root cutting machine is moved in the longitudinal direction of the cutting blade and upward. In this case, the root portion (root fiber) that bites into the notch provided in the cutting blade acts as a slip stopper, and the root can be pulled out.

Furthermore, as described above for some roots of the stump, after moving some of the roots pulled out, with the arm tip of the main cutting root cutting machine closed, insert the arm tip under the stump, The cover can be lifted up and dug up with the lever as a fulcrum. In this way, when the stump is dug up, a part of the stump or the root is clamped by the tip of the arm, the stump is lifted together with the root, and the root is completely pulled out.
Furthermore, even for the roots remaining in the ground, the roots can be clamped by the arm tips and pulled out by the method described above.
The roots can be cut if desired.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the first embodiment of the present invention, and FIG. 2 is a side view of the same. Reference numerals 1 and 1 denote a pair of arms arranged to face each other, and an intermediate portion of the arms 1 and 1 is provided with a support member 3 via pins 2 and 2.
The supporting members 3, 3 are rotatably pivoted between the three members and are connected to each other with a fixed interval therebetween, and their ends are fixed to the connecting plate 4.

A mounting bracket 8 having mounting holes 6 and 7 is fixedly mounted on the connecting plate 4. Mounting hole 6 for mounting bracket 8
Is pivotally attached to the boom tip of a work machine such as a hydraulic power shovel (not shown) through a pin, and the mounting hole 7 is provided with a pin at the tip of a piston rod of a hydraulic cylinder installed on the boom of the work machine. Pivoted through the piston
By changing the projecting length due to the expansion and contraction of the rod, the working angle of the support bodies 3,3, that is, the arms 1,1 is set. 5 is a 2-rod hydraulic cylinder that opens and closes the arms 1 and 1, and the pistons and rods 5a and 5a are pins.
It is pivotally attached to the rear end of the arm 1,1 via 9,9. Further, a trunnion pin is provided at the center of the cylinder of the two-rod hydraulic cylinder 5, and the pin is coupled so as to be able to move in a sliding groove provided on the back surface of the support bodies 3, 3.
The two-lot hydraulic cylinder 5 can be moved up and down in FIG. Further, in the above-mentioned two-rod hydraulic cylinder, pressure oil from a hydraulic pressure supply source on a working machine (not shown) is switched and supplied through a hydraulic hose to move the piston rods 5a, 5a forward and backward in synchronization with each other. Open and close 1 The tips 1a and 1a of the arms 1 and 1 are portions to be acting parts,
Cutting blades 10 and 10 are fixed to the la and la by facing each other with bolts 11 and the like. The cutting blades 10, 10 have notches 10a, 10a at equal intervals.
Are provided, and as shown in FIG. 4, the blade surfaces of the cutting blades 10, 10 are cut into a semi-conical shape to form a cutout portion, and the edge of the cutting blade is a recessed portion at the cutout portion. And each arm 1,
It is fixed to the tip parts 1a, 1a of 1 so as to be symmetrical, and when the tip parts 1a, 1a of the arms 1, 1 are closed and the working surfaces (edges) of the cutting blades 10, 10 are joined, the notch part Spaces are formed at the positions of 10a and 10a, and uncut portions are left. Further, the cutting blades 10, 10 are provided with notches 10a, 10a, ..., Bolt holes symmetrically with respect to the center point in the longitudinal direction, and the tip of the cutting blade 10 (arm tip position) is worn. At the time, it is formed so that the front and back can be interchanged.

Furthermore, in the pivot part where the arms 1 and 1 of the supports 3 and 3 are pivotally attached,
Semicircular protrusion-shaped cover 12,12 to cover the pins 2,2 of the pivot part
Are fixed with bolts or the like. Then, liners 13 and 13 are fixed to the ends of the supports 3 and 3 at positions facing the arms 1 and 1, respectively.

Next, the operation of the first embodiment will be described. First, this felling rooting machine is attached to the tip of a boom of a work machine such as a power shovel via a mounting bracket 8, and when felling a tree, the work machine is operated to operate the tip 1 of the arms 1,1.
When a and 1a are opened as shown in Fig. 1 and the tree is positioned between the open arm tips 1a and 1a, and the hydraulic pressure is supplied to the 2-rod hydraulic cylinder 5 from the hydraulic feeder on the working machine, the 2-rod hydraulic pressure is applied. Two piston rods 5 mounted on the cylinder 5
a and 5a are fed out synchronously, pressing the rear end portions of the arms 1 and 1 which are the force points, and the arms 1 and 1 fulcrum the pins 2 and 2 pivotally attached to the supports 3 and 3, respectively. As a result, they rotate at the same angle with each other, and the tip end, which serves as an action part, is closed as shown in FIG. 3, and the tree is cut by the cutting blades 10, 10. However, as shown in FIG. 3, even if the edges of the cutting blades 10 and 10 come into contact with each other, the cutting blade edges do not come into contact with each other at the positions of the cutout portions 10a and 10a, and as a result, uncut parts are left in the tree. Open the arm tips 1a, 1a and move this felling rooting machine in the longitudinal direction of the cutting blades 10, 10 (vertical direction in FIGS. 1 and 3) to bring the trees into contact with the cutting blades 10, 10. If the arm tip portions 1a and 1a are closed again by changing, the uncut portion will be cut and the tree will be cut.

When closing the arm tip, one cutting blade 10 comes into contact with the tree before the other cutting blade, and the piston rods 5a, 5
Even if there is a difference in the feed amount of a, the 2-rod hydraulic cylinder 5 rotates about the trunnion bin and
The rod hydraulic cylinder 5 always receives only the external force in the axial direction.

Next, when removing the roots of trees and stumps, arm tips 1a, 1
Open a, roughly align the open center of the arm tip 1a, 1a and the center position of the root, insert the arm tip 1a, 1a into the ground and put the root between the cutting blades 10, 10 of the arm tip 1a, 1a. Position and close the arm tips 1a, 1a. Then, during the cutting before the cutting blades 10, 10 come into contact with each other, the closing operation of the arm tip portions 1a, 1a is stopped, and in this state, the felling and rooting machine itself is moved above the cutting blades 10, 10 in the longitudinal direction (first (Upward in FIGS. 3 and 4). The cutting blades 10 and 10 are in the process of cutting the root, and part of the root cuts into the cutouts 10a and 10a of the cutting blades 10 and 10, and the cutting into the cutouts 10a and 10a of the root causes cutting. Preventing slippage between the blades 10, 10 and the root, the root is pulled up and pulled out. In this case, it is not necessary to completely pull out the root, and while the root has moved to some extent, the root pulling out work is stopped, the arm tip 1a, 1a is opened, and the arm tip 1a, 1a is moved to the root position next. Then, the root extraction operation described above is performed.

Then, after the main root is partially pulled out by the above-mentioned operation, the arm tips 1a, 1a are closed as shown in Fig. 3, and inserted under the tree and the stump to form a semicircular protrusion. Mounting bracket 8 so that the cover 12 comes into contact with the ground.
If the mounting bracket 8 is moved downward even after the cover 12 is brought into contact with the ground, the semicircular protruding cover serves as a fulcrum, the mounting bracket 8 serves as a force point, and the arm tips 1a, 1a.
Is the point of action, and the tree and stump are lifted upward by the lever principle and dug up. At this time, a bending moment is generated in the arms 1 and 1, but since the liners 13 and 13 are provided, the force is released to the fulcrum of the cover 12 via the liners to prevent the arms 1 and 1 from bending. It

After the tree or stump is lifted to some extent and dug up, the arm tip 1a, 1a clamps the tree, stump trunk, or root, and cuts a part of it, and the notches 10a, 10a of the cutting blades 10, 10 ... …
If the tree root and stump are lifted along with the root by moving part of the trunk or root into the tree and then moving this cutting and rooting machine upward in the longitudinal direction of the cutting blade, it is possible to remove the tree, stump and its root. it can. In particular, the cutting blades 10 and 10 face each other so that when they are closed, the cutting blade surfaces abut without intersecting each other, so when a tree trunk or root is pinched, a moment due to the pinching force does not occur, and the tree etc. Can be securely clamped and transported.

Further, when cutting the root, the same method as cutting the trunk of the tree described above can be used.

FIG. 5 is a front view of the second embodiment of the present invention. In the above-described first embodiment, the cutout portion is provided over the entire length of the cutting blade 10.
Although 10a is provided, in the second embodiment, a plurality of notches 10a are provided only on the arm tip side of the cutting blade 10, and the cut surface on the base end side, which is the shaft attachment side of the arm tip, has a predetermined length. The difference is that a normal cutting blade is provided without providing a notch portion over the entire length. In this way, since there is no notch 10a on the base end side of the cutting blade, it is easy to cut the trunk, branches or roots of the tree. When pulling out the root of the tree from the ground, insert the tip of the arm, that is, the tip of the cutting blade 10 into the ground, hold the root while biting the root into the notch 10a of the cutting blade 10, and by the method described above. Pull out the roots. Also, when transporting trees, a cutting blade
A tree trunk is sandwiched between the tip ends of 10 and the tree is bitten into the cutout portion 10a so that slippage does not occur between the tree and the cutting blade 10, and the felling and rooting machine is moved to convey the tree.

Further, when cutting the trunk or root of the tree, the cutting blade 10 should be cut at the base end. Notch at the base of the cutting blade
Since there is no 10a, tree trunks, branches, and roots can be cut reliably. In particular, when cutting a trunk, a branch, or a root having a small diameter, as compared with the first embodiment, since the notch portion is not at the base end portion of the cutting blade 10, it is possible to surely cut at one time by the base end portion. it can. In addition, even for large-diameter trunks and roots, cutting blades
Even if the whole 10 is cut, and there is an uncut portion due to the notch,
If this root cutting machine is moved so that the uncut portion is cut at the base end of the cutting blade 10, the cutting can be surely performed without any problem.

In particular, when cutting the trunk, branches, or roots of trees, a large amount of force is required, but since a large amount of force can be generated at the base end, there is no notch on the cutting blade surface of the base end, The advantage of using a cut surface is great. In this way, the base end with a large shearing force is used as a shear blade with no notch, and when the tree is transported or the root is pulled out, the force is applied in the shearing direction compared to the base end in order to hold the tree so that it does not slip off. By providing a notch on the weak tip, tree cutting, root extraction,
Various operations can be performed with this single cutting and rooting machine, such as transportation of trees.

In addition, the tip of the arm 1a has an acute angle to facilitate insertion of the arm tip into the ground, or the arm action portion 1a has a longer length so that the cutting blade 10 has a tip portion with a notch portion 10a and a base end without a notch portion. The sections may be of sufficient length to facilitate their role work.

In the embodiment described above, both arms 1, 1 of the 2-rod type hydraulic cylinder 5 are rotated to eliminate rattling of the arms 1, 1, but a single lot type hydraulic cylinder may be used. Further, one arm may be fixed to the supports 3 and 3 without rotating with respect to the supports 3 and 3.

Further, in the present embodiment, the arm tip 1 is arranged so that the cutting blades 10, 10 are symmetrical with respect to the open center of the arm tips 1a, 1a.
Attach to a, 1a, close arm tips 1a, 1a, and cut blades 10, 10
Although the notches 10a and 10a are opposed to each other when the abutting is made, the cutting edges 10a and 10a are closed so that the notches 10a and 10a do not face each other when the cutting blades 10 and 10 are closed. 10 may be attached.

Furthermore, in the above embodiment, the notch 1 provided in the cutting blade 10.10.
Although 0a and 10a are semi-conical, the cutouts 10a and 10a
Is not limited to this shape and may have another shape. However, the semi-conical shape has an advantage that the cutout can be machined with a conical cutting tool, which facilitates the machining.

EFFECTS OF THE INVENTION The present invention is capable of cutting trees and branches, pulling out roots of trees and stumps, and cutting roots, and cutting tree trunks and branches with one machine, It is possible to efficiently carry out operations such as pulling out and cutting down the roots of trees and further carrying and removing trees and stumps, and it is possible to easily perform ground preparation work in a short time.

[Brief description of drawings]

FIG. 1 is a front view of the first embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a view showing a state when the arm tip portion is closed in the same embodiment, and FIG. Explanatory drawing explaining the shape of the notch of the cutting blade in an Example, FIG. 5 is a front view of the 2nd Example of this invention. 1 ... arm, 1a ... arm tip, 3 ... support, 4
...... Connector, 5 …… 2 lot hydraulic cylinder, 5a …… Piston rod, 8 …… Mounting bracket, 9 …… Pin. Ten
...... Cut blade, 10a …… Notch, 12 …… Cover, 13 …… Liner.

Claims (3)

[Claims] 1. A support body attached to a boom tip of a working machine, and a pair of arms attached to the support body, at least one of which has an intermediate portion rotatably supported at an intermediate portion of the arm.
A hydraulic cylinder attached to the rear ends of the pair of arms to open and close the tips of the arms, and a cutting blade fixed to the tip of each of the arms. A cutting and rooting machine having a plurality of cutouts and not having cutouts on the blade surface of a predetermined length on the base end side of the cutting blade. 2. The felling and rooting machine according to claim 1, wherein a cover protruding from the arm opening / closing surface is attached to the arm shaft support of the support. 3. The felling and rooting machine according to claim 1, wherein the cutout portion is formed by cutting the blade surface into a semi-conical shape.