JPH07108164B2 - Root cutting device for trees - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root cutting device for digging the surrounding ground such as roots of trees.

[0002]

2. Description of the Related Art For example, in order to transplant a tree, it is necessary to dig up roots and carry out root winding, but the work for digging up roots requires a great deal of labor, and There is no equipment to do so, you have to operate a civil engineering machine such as a power shovel. However, the cultivated trees are often arranged in parallel at intervals of several shaku, it is not easy to put a machine in the forest to dig up the soil around it, and damage or break adjacent trees. There is a risk that The technique related to the root winding of the plant tree is disclosed in Japanese Patent Laid-Open No.
There is one proposed in 8-152423.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to rotate a substantially constant radius around a tree trunk or the like and dig the earth and sand around it. By taking it, it is possible to easily perform root cutting.

The main purpose of the present invention is to mechanically perform root cutting of a tree to dig up the tree together with its roots. It is clear that it can also be applied to.

[0005]

In order to solve the above-mentioned problems, the present invention is directed to lowering the rotary blade shaft 4 from the apparatus body 1 to the ground.
So, in order to form a groove in a substantially annular about the substantially upright planted設物such as tree trunk, a root cutting device taking dug earth and sand around the planting設物, detachable from the planting設物Is it possible
One rotatably provided on the distal end of the apparatus main body 1 to a mounting order
The rotary support part 2 and the device main body 1 are provided before and after the device.
Can bear the load of the member attached to the main body 1 , can move the ground around the plant, and has a constant radius centered on the plant.
A moving means 5 consisting of a direction convertible wheels in accordance with the,
It is rotatably installed around the vertical axis to dig up earth and sand.
It has a blade 3 and is installed on the device body 1 so that it can move up and down.
And the rotary blade shaft 4 driven by the drive power, and the rotary blade shaft 4
The guide plate 6 for closing the rear of the moving direction and forming the sediment discharge path for carrying the excavated sediment upward with the groove walls on the left and right of the movement direction and the groove wall in the front, and the sediment rising from the sediment discharge path to the ground. A discharge cylinder member 7 provided above the discharge path for raising the discharge and a discharge opening to the upper part of the discharge cylinder member 7 in order to discharge the earth and sand rising to the upper part of the inside 7 of the discharge member.
This means that the discharge means 8 having the mouth 28 is used.

The rotation support portion 2 is means for fixing one end of the device according to the present invention to the implant P so that the device main body 1 can rotate around the implant P. It is preferable to have a ring shape as in the example, but a hook shape that does not surround the entire circumference may be used.

The moving means 5 connects the apparatus body 1 to the plant P.
Around it is a means for causing one round movement, and also doubles as a means for the apparatus according to the present invention is moved around the. In an embodiment, the most common wheels as moving means 5 that provides an example of juxtaposed by each 2 exports to the main body at both ends.

In the case of the embodiment, the moving means 5 is not driven. Therefore, in order to move the device according to the present invention, an operator needs to push the device body 1 in the circumferential direction. However, it is easy to make it a self-propelled type that moves by power drive, in which case it is sufficient to drive the moving means 5 described above, and the driving force can use the power driving the rotary blade shaft 4, and the clutch The transmission of power can be controlled by 12.

The discharging means 8 is a means for discharging the earth and sand rising to the discharging cylinder member 7 from the inside to the outside, and the simplest is a window-shaped opening or ducts. However, if the earth and sand are pushed out by using the rotation of the rotary blade shaft 4, the earth and sand can be discharged more efficiently.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings. The drawing shows a root cutting device 10 for a planted tree (see FIG. 7), and the device body 1 has two wheels juxtaposed respectively at one end (tree side) and the other end, It has a four-wheeled vehicle structure. Wheels 13 trees side may not be changed is the direction, but the wheel 14 of the other end at a constant radius around the plant設物
Ru direction convertible der together.

As described above, the rotation support portion 2 is a means for rotatably connecting the device 10 according to the present invention to a tree or a plant P, and in the illustrated example, a pair of wheels at one end of the device body 1. It is located in between. The supporting portion 2 is a device body 1
It is composed of a semi-circular main body side metal fitting 15 attached to the and a semi-circular arc-shaped open / close metal fitting 16 pivotally supported at one end thereof, and the other end of the open / close metal fitting 16 is locked to the other end of the main body side metal fitting 15. Connected as possible. The center of the rotation support portion 2 coincides with the center of the plant P, that is, is set vertically, and is orthogonal to the axis of the tree-side wheel 13 (FIGS. 1 and 2).
The device 10 can be moved in the circumferential direction with almost no resistance even if the direction cannot be changed.

A rotary blade shaft 4 having blades 3 for digging earth and sand is attached to the apparatus main body 1 between the wheels 13 and 14. The blades 3 are formed in a spiral shape so as to perform the function of a conveyor that conveys upward while excavating earth and sand. A transmission shaft 18 is inserted from above into the hollow tube of the rotary blade shaft 4 to which it is attached, and both shafts 4 and 18 are integrally rotatable under engagement of a key 19 and a vertically long key hole 20, and The rotary blade shaft 4 is vertically movable within the range of the key hole 20. This vertical movement of the rotary blade shaft 4 is provided to move the rotary blade shaft 4 downward from the discharge cylinder 7 surrounding it.

Therefore, as shown in FIG. 3, the spiral blade 3 digs vertically from the ground S by the rotation of the rotary blade shaft 4 to dig a hole having a certain depth (FIG. 3). If only digging a hole, only the rotary blade shaft 4 is required, but if the rotary blade shaft 4 is not moved in a certain direction (direction of arrow Q), the long groove cannot be dug, and the excavated earth and sand must be discharged to the outside. Dirt remains and the groove does not open. Therefore, a guide plate 6 is provided to close the rear side of the rotary blade shaft 4 in the moving direction. That is, the left and right groove walls 21, 22 and the front groove wall 23 in the moving direction of the dug groove.
At the same time, the guide plate 6 is provided at a position forming the rear wall 24 to form the earth and sand discharge path 25 surrounding the rotary blade shaft 4. The illustrated guide plate 6 is attached movably up and down on the rear side in the moving direction of the discharge cylinder member 7 surrounding the rotary blade shaft 4. The vertical movement of the guide plate 6 can be performed by, for example, the key 2 similar to the above.
6 and a vertically elongated key hole 27 engageable therewith.

The discharge cylinder member 7 is formed in a cylindrical shape that surrounds the outer circumference of the rotary blade shaft 4 at an appropriate interval, and receives the earth and sand carried from the earth and sand discharge passage 25 formed in the lower layer during excavation and discharges it out of the device. To do. What is necessary as the earth and sand discharging means 8 is to provide the discharge port 28 on the cylindrical surface of the discharging cylinder member 7,
In order to accelerate the discharge of the earth and sand from the discharge port 28, it is advisable to install the discharge piece 11 side by side. The illustrated bare piece 11 is
Composed of fins radially attached to the rotary blade shaft 4 above the blade 3, and biasing the sand and sand that has risen to the upper portion of the rotary blade shaft 4 driven by the pulley 29 in the radial direction outward. It is designed to be ejected from the discharge port 28. 28 'shows a guide piece.

Mechanism 3 for adjusting the depth of the groove to be dug
0 is provided to move the discharge cylinder member 7 and the rotary blade shaft 4 up and down (FIG. 3). The depth adjusting mechanism 30 has a vertical screw rod 31 provided in a housing 36 on the apparatus main body 1, and the transmission shaft 18 is provided so that a female screw cylinder member 32 screwed with a male screw portion thereof does not rotate. Is inserted inside the
It moves up and down in the transmission shaft 18. Further, a rotating member 34 for receiving the rotation of the screw rod 31 by the transmitting means 33 and rotating is attached to the main body, and another screw rod 35 screwed with the female screw portion of the member 34 is attached to the upper end of the guide plate 6. Therefore, the guide plate 6 moves up and down synchronously with the female screw cylinder member 32, that is, the rotary blade shaft 4.

Further, the apparatus body 1 is provided with a radius adjusting mechanism 9 for moving the position of the rotary blade shaft 4 in the radial direction around the rotary support portion 2 (FIG. 6). Therefore, a housing 36 for suspending the discharge cylinder member 7 and the transmission shaft 18 so as to be movable in the radial direction is provided on the apparatus main body 1. The housing 36 is movable by a guide means such as a guide rail 37 and a guide leg 38 engaging with the guide rail 37,
The radius of the groove to be dug can be selected by operating the adjusting shaft 39 provided at the other end of the main body.

A handle 12 for pushing the entire apparatus is provided at the other end of the apparatus main body 1. In this embodiment, the handle 12 is a means for arranging the groove T in an annular shape. In the figure, 40 is an adjusting member and 41 is the wheel 1 at the other end.
The turning gear of No. 4 meshes with the worm gear 42,
Is rotated by the operation member 43.

The tree-rooting device 10 according to the present invention having the above-described structure is used for trees as shown in FIG.
The whole length of the apparatus main body 1 is set to be shorter than the interval between the planting objects P which are the trunks of trees. This can be achieved by arranging the moving means 5 at both ends, installing the rotary blade shaft 4 and any necessary mechanism between them, and moving the rotary blade shaft 4 up and down . For example with respect to the number feet between average tree, the device according to the present invention is that Ki de be set at about 100～140Cm.

To use the device 10 according to the present invention, the rotary support 2 is opened and attached to the implant P, the engine E is operated, and the rotary vane shaft 4 is lowered at an appropriately set radial position. At the same time as drilling a hole of a predetermined depth, handle 1
2 is pressed to move the apparatus body 1 in a certain direction, for example, counterclockwise when viewed from above. At this time, the rotary blade shaft 4 excavates the earth and sand, and at the same time, carries it up and discharges it from the discharge cylinder member 7 to the outside by the discharge means. Without leaving behind, it is possible to form a groove in the ground cleanly as long as it is dug.

[0020]

Therefore, according to the present invention, it is possible to move on the ground.
The rotating blade shaft 4 lowered from the device body 10
It is possible to form a groove with a necessary and sufficient width in an annular shape by excavating the earth and sand around the circumference of a circle with a substantially constant radius around the trunk of a tree, etc. Therefore, is root cutting work extremely easy on the ground ?
This has the effect that it can be performed with good stability .

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a root cutting device for trees and the like according to the present invention.

FIG. 2 is a partially cutaway side view of the same.

FIG. 3 is an enlarged cross-sectional view of a main part of the same.

4 is a sectional view taken along line IV-IV of FIG.

5 is a cross-sectional view taken along line VV of FIG.

6 is an overall perspective view of the device of FIG.

FIG. 7 is a side view showing the relationship between trees and the device according to the present invention.

Claims (6)

[Claims] 1. A rotary blade shaft 4 is moved downward from the apparatus body 1 to the ground.
It is a root-cutting device that digs out the soil around the plant to form a substantially circular groove around the plant that has been lowered and is almost upright like a tree trunk. Removable
Ability and rotatably to the tip of the main body 1 to a mounting order
The rotation support portion 2 provided and the front and rear of the apparatus main body 1,
It bears the load of the members attached to the device body 1 , can move the ground around the plant, and has a constant centering on the plant.
Moving means 5 consisting of wheels capable of changing direction according to radius
And to dig up the earth and sand, it is possible to rotate around the vertical axis
The apparatus main body 1 has the blades 3 provided and is movable up and down.
The rotary blade shaft 4 driven by the power and the rear of the rotary blade shaft 4 in the moving direction are closed to form a sediment discharge path for carrying up the excavated soil together with the groove walls on the left and right of the moving direction and the groove walls in the front. Guide plate 6 for discharging, and for discharging the earth and sand that have risen to the upper part of the discharge cylinder member 7 and the inside 7 of the discharge pipe member provided above the discharge path to raise the earth and sand that have risen in the sediment discharge path to the ground And opened at the upper part of the discharge cylinder member 7.
A root cutting device for trees and the like, which comprises a discharging means 8 having a discharging port 28 . 2. A rotary vane shaft 4 that can be moved up and down for digging sand is installed in the apparatus main body 1 via a radius adjusting mechanism 9 that allows the position to be adjusted in the radial direction around the rotary support 2. The root cutting device for trees and the like according to claim 1. 3. The moving means 5 is a wheel for making the apparatus main body 1 a movable carriage, and the wheel is the rotation supporting portion 2.
The root cutting device for trees or the like according to claim 1, wherein the root cutting device is provided in each of the front end of the main body provided with and the outside of the rotary blade shaft 4. 4. The guide plate 6 has a width which is substantially the same as the width of the dug groove, and the upper discharge cylinder member so that the guide plate 6 can be adjusted up and down to the same extent as the vertical movement range of the rotary blade shaft 4. 7. The root cutting device for trees and the like according to claim 1, which is attached to the device main body 7 or the vicinity thereof. 5. The rotary blade shaft 4 has a blade 3 spirally provided on the peripheral surface of the rotary shaft 10, and in order to push out the earth and sand rising to the upper part of the blade 3 outward in the radial direction, The root cutting device for trees and the like according to claim 1, wherein the rotary blade shaft 4 is integrally provided with a protruding piece 11. 6. One moving means 5 is provided at one end of the apparatus main body 1.
Is provided, and the other moving means 5 is provided at the other end so as to be able to change the direction, so that the surroundings of the plant can be rotated while supporting the load of the entire apparatus, and the rotation attached to the plant is possible. The support portion 2 is provided coaxially with the one moving means 5, and the rotary vane shaft 4 is provided on the device main body 1 between the both moving means 5 and 5 so as to be positionally adjustable via a radius adjusting mechanism 9. In addition, a handle 12 for pushing to move the entire apparatus is provided at the other end of the apparatus main body 1,
The root cutting device for trees or the like according to claim 1, wherein the entire length from one end to the other end of the device main body 1 is set to a length equal to or less than the average interval of the cultivated trees.