JP6976739B2 - Felling cutting machine - Google Patents

Description

The present invention relates to a felling cutting machine capable of cutting down a standing tree or grasping and carrying a log lying down.

This type of felling cutting machine has a head that includes a gripping device and a cutting device, the head being attached via a hanger to an attachment operably attached to the boom arm of a tracked vehicle. , Has joints and hanging brackets rotatably attached to the joints. The head is pivotally connected to a hanging bracket and is rotated by a hydraulic cylinder between a horizontal position and a vertical position. The head gripping device includes a grapple that is pivotally connected to the frame of the head on the left and right sides of the head and is operated to be openable and closable by a hydraulic cylinder, and the cutting device includes a chain saw mounted on the head.

For felling work, the head is placed in the vertical position, the head is brought closer to the tree by manipulating the boom arm, the grapple that is closed holds the tree, and then the chain saw is operated to cut the tree. Depending on the thickness of the standing tree, it may not be possible to cut with a single operation of the chain saw. The hanging pukette of the hanger is rotated with respect to the joint by a hydraulic motor, the position of the head is changed around the tree, and the chain saw is operated again to repeat the cutting work. The cutting of the standing tree is performed by the high-speed running of the chain saw.

In the vertical and horizontal position of the head, the chain saw is near the root of the tree and is prone to encounter soil, stones and gravel around the cutting tree. Since the chain saw runs at high speed during operation, when it encounters soil, stones or gravel, it may flick them off, resulting in damage to the chain saw blade.

An object of the present invention is a combination of a grapple that holds a standing tree and a cutting blade that cuts the standing tree near the root. Is to provide.

The above object of the present invention is a felling cutting machine for cutting down a standing tree, which has a head attached via a hanger to an attachment operably attached to a boom arm of an infinite track vehicle. The head consists of a head body, left and right grapples rotatably connected to the head body by a pivot, a hydraulic cylinder that operates to open and close these grapples around the pivot, and a head rotation by the pivot. A cutting blade that is connectable and can rotate between the cutting position and the retracted position, a hydraulic cylinder that operates to rotate the cutting blade around the pivot axis, and resists the cutting force of the cutting blade during cutting of a standing tree. Including a pair of front and rear receiving portions for receiving a standing tree provided on the head body, and further having a hydraulic motor for the hanger that rotates the hanger around an axis extending in the vertical direction, the hydraulic motor for the hanger. By operating, the cutting blade is returned to the retracted position, and with the left and right glamples holding the standing tree, the head is rotated around the standing tree to change the position of the head, and the cutting operation of the standing tree with the cutting blade is repeated. Achieved by providing a felling cutting machine that is configured to be capable of.

[Action]
The head suspended from the hanger is turned vertically, and the left and right grapples are opened and brought close to the standing tree, the grapples are closed to hold the standing tree, and then the standing tree is cut by the pushing action by the cutting blade. At that time, since the receiving part of the head body catches the standing tree, the tree is easy to cut and does not cause vertical cracks. If the tree cannot be cut down with a single cutting operation, operate the hydraulic motor for the hanger, return the cutting blade to the retracted position, and with the left and right glamples holding the tree, move the head around the tree. The position of the head is changed by rotating it, so that the operation of cutting the standing tree with the cutting blade can be repeated.

It is the whole side view of the endless track car which shows the state of the cutting work of a standing tree, and the felling cutting machine by this invention. It is a side view of the felling cutting machine shown in a horizontal position. It is a front view of a felling cutting machine. It is a top view of a felling cutting machine. It is a bottom view of a felling cutting machine. It is a front view of the portion of the cutting blade from the arrow 6-6 of FIG. It is a front view of a grapple part. It is a figure seen from the arrow 8-8 of FIG. It is a figure seen from the arrow 9-9 of FIG.

Referring to FIG. 1, the felling cutting machine 1 according to the present invention has a head 4 including a gripping device 2 and a cutting device 3, and the head is operably attached to a boom arm 6 of a tracked vehicle 5. It is attached to the track 7 via the hanger 8. The hanger 8 has a joint 9 and a hanging bracket 10 rotatably attached to the joint and rotated by a hydraulic motor. The head 4 is pivotally connected to the hanging bracket 10 by a pin 11 and is rotated by a hydraulic cylinder 12 between a horizontal position and a vertical position.

The head gripping device 2 includes two left grapples 17 and 17 and one right grapple 18 provided on the head body 4a, as clearly shown in FIGS. 2-5 and 7. The connecting pipes 14 and 15 extend longitudinally through the grabbles 17 and 17 and the grapples 18, respectively, and are fixedly attached to the grabbles 17 and 17 and the grapples 18, respectively. The grapples 17 and 17 and the grapples 18 are connected to a pair of front and rear brackets 19 and 19 constituting the frame of the head body 4a by pivots 20 and 20. Since the grapple 18 is a single one, the pivot 20 is supported by two pairs of front and rear brackets 21 and 21 fixed to the connecting pipe 15 in order to secure the support of the pivot 20. Thus, the grapple 18 is between the grapples 17 and 17, and the grapples 17 and 18 are configured to intersect each other when the grapples 17 and 18 rotate about their pivots.

The hydraulic cylinder 23 has a rear end connected to the pivot 20 of the right grapple 18 and a plunger end to a pair of bracket arms 24, 24 fixedly attached to a connecting pipe 14 of the left grapple, which is integral with the grapple 17. It is connected by a pivot pin 25. A tuning culm 26 connects the left and right grapples 17 and 18 to each other in order to transmit the rotation of one grapple to the other grapple. Specifically, one end of the tuning culm 26 is connected to the pucket arms 24 and 24 with pins 27 and 27, and the other end is connected to the grapple 18 and the bracket 21 integrally with the grapple 18 with pins 28 and 28. Thus, by expanding and contracting the hydraulic cylinder 23, the grapples 17 and 18 can be opened and closed synchronously with respect to the pivots 20 and 20 via the tuning culm 26.

As can be seen in FIGS. 2 to 7, the cutting device 3 includes a cutting blade 29 arranged at the rear of the head main body 4a. The cutting blade 29 is preferably made of a warped blade. The sleeve 30 is rotatably supported by a pivot 33 provided between a pair of front and rear brackets 31 and 32 constituting the frame of the head body 4a, and the cutting blade 29 is bolted to a mounting plate 34 fixed to the sleeve 30. 35. A hydraulic cylinder 36 that operates so as to rotate the cutting blade 29 around the pivot 33 is provided. One end of the hydraulic cylinder 36 is connected to a pivot pin 37 provided between the brackets 31 and 32, and one end of the plunger is connected to the mounting plate 31 by a pivot pin 38. Thus, by expanding and contracting the hydraulic cylinder 38, the cutting blade 29 can be rotated between the cutting position (open position) and the storage position around the pivot 33.

As can be seen in FIGS. 5, 8 and 9, a pair of receiving portions 39, 40 for receiving the cutting neutral tree by the cutting blade 29 are provided before and after the cutting blade 296. The receiving portion 39 exists as an arc surface in the lower center of the bracket 31 of the head main body 4a, and the receiving portion 40 exists as an arc surface in the lower center of the receiving plate provided fixed to the main body. It is desirable that the receiving portions 39 and 40 are located close to both sides of the cutting blade. If the distance between the receiving parts is too wide, the receiving of the standing tree will be difficult, and the cutting blade will not cut the standing tree well, which may sometimes cause cracks in the material.

When cutting down a standing tree, the head 4 of the felling cutting machine, which is attached via the hanger 8 from the attachment 7 operably attached to the boom arm 6 of the endless track vehicle 5, is moved from the horizontal position to the vertical position by the hydraulic cylinder 12. do. With the left and right grapples 17 and 18 open, bring them closer to the standing tree T, extend the hydraulic cylinder 23, close the grapples 17 and 18, and hold the standing tree. As a result, the standing tree is firmly held by the grapples 17 and 18. In the vertical position, the cutting blade 29 is located near the root of the standing tree T (see FIG. 1). Next, the hydraulic cylinder 36 is extended to rotate the cutting blade 29 around the pivot 33, and the standing tree T is received by the pair of receiving portions 39 and 40 while the standing tree is cut by a push-cutting action. If the standing tree cannot be cut down by one cutting operation, the cutting blade 29 is returned by the contraction of the hydraulic cylinder 36, the head 1 is rotated around the standing tree to change the position of the head 1, and the cutting blade 29 is used for cutting. Repeat the operation as appropriate. The cut tree is knocked down with the head 4 while being held by the grapple.

According to the present invention, the rotating cutting blade cuts the standing tree like a push-off, so that even if the soil, stones or gravel that may exist around the standing tree are encountered, they can be thrown away. Therefore, it does not damage the blade. Cutting a standing tree with a cutting blade Since the standing tree is received by a pair of receiving parts, no distorted force is applied to the standing tree, so that the tree does not crack.

According to the present invention, in a felling cutting machine, when the cutting blade is in the retracted position, the grapple can grab one or more of the timber lying down and carry it from place to place or load it into a carrier. It can also be used as a forestry machine and is very useful.

1 Track car 2 Grasp device 3 Cutting device 4 Head 4a Head body 6 Boom arm 7 Attachment 8 Hanger 17 Grapple 18 Grapple 20 Axis 23 Hydraulic cylinder 29 Cutting blade 33 Axis 36 Hydraulic cylinder 39 Receiving part 40 Receiving part T Standing tree

Claims (2)

It is a felling cutting machine for cutting down standing trees,
It has a head attached via a hanger to an attachment operably attached to the boom arm of a track car,
This head
With the head body
The left and right grapples rotatably connected to this head body by an axis,
A hydraulic cylinder that operates to open and close these grapples around the Axis,
A cutting blade that is rotatably connected to the head body by a pivot axis and can rotate between the cutting position and the storage position.
A hydraulic cylinder operable to rotate the cutting blade about the pivot,
Comprises a pair of receiving portions before and after receiving the trees provided in the head body to resist the cutting force by the cutting blade during the cutting of trees,
Further, it has a hydraulic motor for the hanger that rotates the hanger around a shaft extending in the vertical direction.
By operating the hydraulic motor for the hanger, the cutting blade is returned to the retracted position, and the head is rotated around the standing tree while the left and right glamples are holding the standing tree to change the position of the head. A felling cutting machine configured to be able to repeat the cutting operation of a standing tree with the above cutting blade. The felling cutting machine according to claim 1, which comprises a tuning culm that connects the left and right grapples to each other in order to transmit the rotation of one grapple to the other grapple.

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