JP6890315B2 - Stump rooting machine - Google Patents

Description

The present invention relates to a stump rooting machine for removing roots of a tree stump.

For example, when replanting roadside trees, if the roots of the stumps of the old trees remain in the soil, it may be an obstacle to planting new trees, so the roots of the stumps of the old trees should be used. It is necessary to remove it from the soil. As a rooting machine for removing the roots of such tree stumps, for example, Patent Document 1 discloses a rooting machine attached to the tip of an arm of a working machine such as a hydraulic excavator and provided with a chuck tool.

The chuck tool of this rooting machine has a pair of opening / closing bodies, and a plurality of opening / closing bodies are arranged side by side and closed to fix claws that mesh with each other. The rooting of a stump by this rooting machine is performed by closing a pair of opening and closing bodies of the chuck tool, grasping the stump with a claw at the tip, and turning and pulling up the chuck tool.

Japanese Unexamined Patent Publication No. 63-216412

However, in the rooting machine of Patent Document 1 described above, since the stump is gripped and rooted only by the claws at the tips of the pair of opening and closing bodies, the stump is sufficiently rooted during the rooting operation. There was a problem that the roots could not be grasped, and if the chuck tool was swiveled and forcibly pulled out, especially when the roots were growing deeply, the roots would be cut off in the middle and remain in the soil.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stump rooting machine capable of performing stable rooting work.

In order to achieve the above object, the stump rooting machine of the present invention is used.
A pair of a frame that is swingably attached to the tip of the work machine arm of the work machine via a bracket and that is swingably provided at the lower part of the bracket and that is supported by the frame so as to be openable and closable and grips a stump. A stump rooting machine equipped with a gripping arm
The pair of gripping arms include a blade portion provided along the proximal end side of the facing surface, a protrusion provided on the tip end side of the blade portion and projecting from the blade edge, and the tip end of the facing surface. It is characterized by having a claw-shaped portion provided in the above and a wedge-shaped portion provided between the blade portion and the claw-shaped portion.

The pair of gripping arms may be used to cut the stump before rooting.

The protrusions may be used more provided away septum to the blade edge of tip side of the blade portion.

According to the present invention, it is possible to provide a stump rooting machine capable of performing stable rooting work.

It is a front view which shows the structure of the stump rooting machine which concerns on embodiment of this invention. It is a perspective view which shows the structure of the stump rooting machine shown in FIG. (A) is an enlarged perspective view showing the configuration of one gripping arm included in the stump rooting machine according to the embodiment of the present invention, and (B) is an enlarged perspective view showing the configuration of the stump rooting machine according to the embodiment of the present invention. It is an enlarged perspective view which shows the structure of the other gripping arm. It is explanatory drawing for demonstrating the schematic structure of the work machine to which the stump rooting machine which concerns on embodiment of this invention is attached. It is explanatory drawing for demonstrating the work which cuts while breaking a stump by the stump rooting machine which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the stump root extraction work by the stump root extraction machine which concerns on embodiment of this invention.

The stump rooting machine according to the embodiment of the present invention will be described below with reference to the drawings. The rooting machine 1 is a device for removing the roots of the stump 30 of a tree cut down with a chainsaw or the like. As shown in FIG. 4, the rooting machine 1 is swingably mounted on the tip of the work machine arm 21 of the work machine 2 such as a hydraulic excavator.

As shown in FIGS. 1 and 2, the rooting machine 1 includes a pair of gripping arms 11a and 11b, a frame 12, a pair of hydraulic cylinders 13a and 13b, a swivel mechanism 14, and a mounting portion 15. .. The pair of gripping arms 11a and 11b are used not only for gripping the stump 30 in the root extraction work of the tree stump 30, but also for cutting the stump 30 before the root extraction work while breaking the stump 30. As shown in FIGS. 1 to 3, the facing surfaces of the pair of gripping arms 11a and 11b for gripping the stump 30 have blades 111a and 111b on the base end side, claw-shaped portions 112a and 112b on the tip, and blades. Wedge-shaped portions 113a and 113b are provided between the portions 111a and 111b and the claw-shaped portions 112a and 112b, and protrusions 114a and 114b are provided on the tip end side of the blade edge of the blade portions 111a and 111b.

The blade portions 111a and 111b are formed on the facing surfaces of the pair of gripping arms 11a and 11b from the vicinity of the base end to the tip end side. When gripping the stump 30, the blades 111a and 111b are opened at a predetermined angle without being completely closed so as to bite into the stump 30. The blade portions 111a and 111b are also used for cutting the stump 30 before the root extraction work.

The tips of the protrusions 114a and 114b are formed in a single-edged shape with opposite surfaces inclined. Therefore, even if the pair of gripping arms 11a and 11b are closed, the protrusions 114a and 114b do not collide with each other. The protrusions 114a and 114b bite into the stump 30 when gripping the stump 30 and prevent the stump 30 gripped between the blades 111a and 111b from moving and escaping from the tip side. The protrusions 114a and 114b are also used for cutting the stump 30 before the root extraction work.

The claw-shaped portions 112a and 112b are provided so as to project so as to face each other. The claw-shaped portions 112a and 112b are made to bite into the stump 30 when gripping the stump 30. Further, the claw-shaped portions 112a and 112b are particularly effectively used for the work of breaking the stump 30 before the root extraction work. The wedge-shaped portions 113a and 113b are provided so that the tips of the wedge portions face each other. When gripping the stump 30, the wedge-shaped portions 113a and 113b are made to bite into the stump 30 from the tip of the wedge-shaped portion. Further, the wedge-shaped portions 113a and 113b are effectively used together with the claw-shaped portions 112a and 112b for the work of breaking the stump 30 before the root extraction work.

The pair of gripping arms 11a and 11b are rotatably supported on the inside of the frame 12 on the proximal end side by pins 16a and 16b. The pair of hydraulic cylinders 13a and 13b are used to rotate and open / close the pair of gripping arms 11a and 11b. One end of the pair of hydraulic cylinders 13a and 13b is rotatably connected to the outside of the pair of gripping arms 11a and 11b on the base end side by pins 17a and 17b, and the other end is rotatably connected to the frame 12 by pins 18a and 18b. It is connected as possible. The hydraulic oil is supplied to the pair of hydraulic cylinders 13a and 13b via a hydraulic hose (not shown). By expanding and contracting the pair of hydraulic cylinders 13a and 13b, the pair of gripping arms 11a and 11b can be rotated and opened and closed.

The swivel mechanism 14 is fixed to the upper part of the frame 12 and the lower part of the bracket 25 described later. The frame 12 is swiveled by the motor 19 shown in FIG. 4 via the swivel mechanism 14. As the swivel mechanism 14, for example, a mechanism such as a rolling bearing is used.

As shown in FIG. 4, the working machine 2 to which the rooting machine 1 is mounted is provided with, for example, a crawler type traveling unit 22 and can travel. The work machine 2 includes a swivel body 23 rotatably provided on the traveling portion 22, a boom 24 whose base end side is rotatably attached to the swivel body 23 and driven by a boom cylinder 28a, and a tip of the boom 24. A working machine arm 21 whose base end side is rotatably attached to the side and driven by an arm cylinder 28b, and a rooting machine cylinder 28c which is swingably attached to the tip side of the working machine arm 21 around a pin 26. It has a bracket 25 that is oscillated via a link mechanism 27.

The mounting portion 15 of the rooting machine 1 is mounted on the tip of the working machine arm 21 via the bracket 25. Therefore, the rooting machine 1 is oscillated by the rooting machine cylinder 28c via the bracket 25.

Here, the work of removing the roots of the tree stump 30 using the root removal machine 1 will be described. The swivel body 23 of the work machine 2 is swiveled, the boom 24 is swiveled, and the arm 21 for the work machine is swiveled as appropriate, and the rooting machine 1 is swiveled and swung as appropriate, and a pair of hydraulic cylinders 13a and 13b is used. By opening and closing the gripping arms 11a and 11b, as shown in FIG. 5, the work of cutting the tree stump 30 into several pieces is performed. This work makes the roots of the stump 30 stable and easy to pull out. The stump 30 is gradually cracked by the claw-shaped portions 112a and 112b and the wedge-shaped portions 113a and 113b of the pair of gripping arms 11a and 11b, and the cracks are gradually widened. Further, the stump 30 can be cut into several pieces by using the blade portions 111a and 111b and the protrusions 114a and 114b together.

After the cutting work of the stump 30 is completed, the pair of gripping arms 11a and 11b are closed by the pair of hydraulic cylinders 13a and 13b to close the blade portions 111a and 111b, the protrusions 114a and 114b, the claw-shaped portions 112a and 112b and the wedge. The shaped portions 113a and 113b are made to bite into the carved stump 30. As a result, the stump 30 cut by the pair of gripping arms 11a and 11b is gripped. With the pair of gripping arms 11a and 11b gripping the cut stump 30, the rooting machine 1 is appropriately swiveled and swung, the boom 24 is rotated, the working machine arm 21 is rotated, and the swivel body is swiveled. When the rooting machine 1 is pulled up little by little by appropriately rotating 23, the roots of the cut stump 30 are extracted as shown in FIG. The root extraction operation is performed in the same manner for all the remaining carved stumps 30.

As described above, in the rooting machine of the present embodiment, the stump 30 is gripped by the pair of gripping arms 11a and 11b so that the blade portions 111a and 111b, the protrusions 114a and 114b, the claw-shaped portions 112a and 112b and the wedge-shaped portions 113a and 113b are formed. Since the roots can be extracted by grasping the roots in a stable state where they have bitten into the roots, for example, even deeply grown roots can be stably removed.

Further, in the rooting machine of the present embodiment, when the stump 30 is gripped by the pair of gripping arms 11a and 11b, the stump 30 gripped between the protruding portions 114a and 114b and the blade portions 111a and 111b moves. Stable rooting work is also possible from the viewpoint that it is possible to prevent the tip side from escaping.

Further, in the rooting machine of the present embodiment, the pair of gripping arms 11a and 11b can be used not only for the rooting work but also for the cutting work of the stump 30 for stabilizing the rooting work, so that the stump 30 can be cut efficiently at low cost. Can perform rooting work.

Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments and can be modified in various ways. For example, in the above embodiment, the root extraction work is performed with all of the blade portions 111a, 111b, the protrusions 114a, 114b, the claw-shaped portions 112a, 112b, and the wedge-shaped portions 113a, 113b biting into the stump 30. However, depending on the shape, size, etc. of the stump 30, it is not necessary to make all of the stump 30 bite into the stump 30, and only a part of the stump 30 may be made to bite.

Further, in the above embodiment, an example in which all of the blade portions 111a, 111b, the protrusions 114a, 114b, the claw-shaped portions 112a, 112b, and the wedge-shaped portions 113a, 113b are used in the cutting operation of the stump 30 has been described. It is not always necessary to use all of them, and depending on the shape, size, etc. of the stump 30, only a part of the stump 30 may be used.

Further, in the above embodiment, an example in which the stump 30 is cut before the rooting work has been described, but when the diameter of the stump 30 is small, it is not always necessary to carry out the stump 30 cutting work.

In the above embodiment, the projections 114a, 114b of the blade portion 111a, has been described one provided example respectively on the tip side of the blade edge of 111b, provided with a plurality of projections and away septum to the blade edge The grip of the stump 30 may be made more stable.

Further, in the above embodiment, the example in which the frame 12 is swiveled by the motor 19 via the swivel mechanism 14 has been described, but the frame 12 may be provided so as to be freely swivelable without using the motor 19. ..

Further, in the above embodiment, an example in which the tips of the protrusions 114a and 114b are formed in a single-edged shape has been described, but the tips do not necessarily have to be formed in a single-edged shape, and may be formed in a wedge shape, for example. , The entire protrusions 114a and 114b may be formed in a plate shape.

1 Root pulling machine 11a, 11b Pair of gripping arms 111a, 111b Blade part 112a, 112b Claw-shaped part 113a, 113b Wedge-shaped part 114a, 114b Protrusion part 12 Frame 13a, 13b Pair of hydraulic cylinder 14 Swing mechanism 2 Working machine 21 Working machine Arm 25 Bracket 26 Pin 27 Link mechanism 28c Cylinder for rooting machine 30 Stump

Claims (3)

A pair of a frame that is swingably attached to the tip of the work machine arm of the work machine via a bracket and that is swingably provided at the lower part of the bracket and that is supported by the frame so as to be openable and closable and grips a stump. A stump rooting machine equipped with a gripping arm
The pair of gripping arms include a blade portion provided along the proximal end side of the facing surface, a protrusion provided on the tip end side of the blade portion and projecting from the blade edge, and the tip end of the facing surface. A stump rooting machine characterized by having a claw-shaped portion provided in the above and a wedge-shaped portion provided between the blade portion and the claw-shaped portion. The stump rooting machine according to claim 1, wherein the pair of gripping arms cut the stump before rooting. The protrusions uprooting machine stumps according to claim 1 or 2, characterized in that in the distal end side away septum to the blade edge of the blade section provided with a plurality.

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