JPH0637607Y2 - Root cutting machine - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial field of application) The present invention cuts the roots of trees while digging circular grooves in the ground around the trees for fertilizer application or transplanting. It relates to a root cutting machine for doing.

(Prior Art) Conventionally, in this type of root cutting machine, a plate-shaped root cutting that forms several radial blades at the inner end of the rotor shaft to which the digging blades are radially fixed The cutter was stuck.

(Problems to be solved by the invention) Generally, the root cutting cutter has a short life because the blade rotates in the soil, but the conventional root cutting cutter requires replacement of the entire root cutting cutter when the blade is worn. Was expensive. For this reason, a root cutting cutter that fixes several blades to the outer circumference of the disc with bolts was used, but if the number of blades is large, the work of exchanging is difficult and the number of blades is small. Were usually provided with 4 or 6 blades. Therefore, unlike the saw-shaped blade, the root was intermittently deeply cut, giving large vibration to the root and detaching the soil adhering to the root, causing growth failure.

(Means for Solving the Problem) The present invention is a root-cutting cutter, in which a saw chain in which cutter links are connected at appropriate intervals between connection links connected in a chain shape is wound around the outer circumference of a disk and locked. It is provided.

(Operation) The present invention excavates a circular groove with a tilling blade and simultaneously cuts the root with a root cutting cutter. A saw chain is generally used as a large number of chainsaws, and only the saw chain is replaced when worn. Generally, saw chains have small continuous links, and since left and right alternating cutter links are continuously provided with one in between, blade intervals are short, and many blades are provided all around the root cutting cutter. Since the number of times of cutting is increased, the cutting depth is shallow and the root is not vibrated greatly.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 10, the root cutting machine 1 is configured as follows. That is, the vehicle body 3 is divided into the front frame 5 and the rear frame 7, and the brackets 9 and
An engagement shaft 13 is pivotally mounted at 11 so as to be swingable in the horizontal direction. The upper portion of the bracket 9 on the front frame 5 side has an engaging shaft 13
It is formed in a disk shape centered around and has a plurality of pin holes 15,15, ...
Pins that are arranged side by side in the circumferential direction and fit into one pin hole 15
Reference numeral 17 engages with a pin hole 19 provided in the bracket 11 on the rear frame 7 side to position and fix the front frame 5 and the rear frame 7 at an appropriate horizontal angle. Note that, contrary to the above, the bracket 11 on the rear frame 7 side may be formed in a disc shape to provide a plurality of pin holes. A rotor shaft 23 is rotatably supported in the horizontal direction on the front portion of the front frame 5 via a chain box 21, and the rotor shaft 23 has a plurality of radial plowing blades.
25 are installed side by side, and the root cutting cutter is installed at both ends of the rotor shaft 23.
27 is fixed by screws 29. The tilling blade 25 is formed in a shape in which a knurled cutter blade is curved in the lateral direction, and excavates the soil. The root cutting cutter 27 is configured as follows. That is, the guide piece inward
Drive link 36 from which 35 projects and connecting links 3 on both sides
3, 33 and 33 are alternately and continuously connected in a chain by a pin 37, and the connecting links 3 adjacent to the front and rear of this pair of connecting links 33, 33 on both sides are connected.
Instead of connecting link 33 on one side of 3, 33, blade 31
The saw chain 39 in which the cutter links 34 provided with are alternately connected to the right and left over the entire circumference, the guide piece 35 is engaged with the groove 40 formed on the outer circumference of the disk 30, and the circumference is formed by an appropriate means such as a locking pin. Locked in the direction. A gutter 41 is provided in the horizontal direction above the rotor shaft 23, and a guide cover 43 formed to cover the rotor shaft 23 and guide the soil scattered by the tilling blade 25 to the gutter 41 is provided on the front frame 5. Is stuck to. The gutter 41 is fixed to the guide cover 43, the discharge port 45 is provided at the end protruding outward, the screw conveyor 47 is rotatably supported inside, and the end of the shaft 49 of the screw conveyor 47. A sprocket 51, which transmits the power of the engine via a chain (not shown), is fixed to this. A locking ring 55 for locking one end of the connecting pair (wire in this embodiment) 53 is provided on the inner side surface of the guide cover 43.

Wheels 59 are fixed to both ends of a horizontal axle 57 on the rear frame 7, and are driven by an engine 61 mounted on the upper portion. The rear frame 7 is provided with a handle 63 for operation by a worker behind the vehicle body 3.

A wire support ring 67 for holding one end of the wire 53 rotatably is fixed to a trunk 65 of the tree. The wire support ring 67 is configured as follows. That is,
An annular body 73 having a collar 71 at the lower end of a metal cylindrical portion 69 is divided into two parts, pivotally attached by a shaft 75 so as to be openable and closable, and provided with a pin 77 in a closed state. A bolt 79 is screwed into the cylindrical portion 69 at three equal positions, and the bolt 79
A circular support plate 81 is fixed to the inner end of the. Wire 53
The end portion of is formed in a ring shape that fits on the outer periphery of the cylindrical portion 69, and in order to form this ring, a hook 83 with which a ring formed at the end portion is locked is provided.

A jacking device 87 is attached to the inner ring of the vehicle body 3 on the rear frame 7 via a bracket 85. That is, the vertical outer cylinder 89 is fixed to the bracket 85, and the bottom plate is attached to the inside and the lower end.
An inner cylinder 93 to which 91 is fixed is fitted so as to be able to move up and down, and is urged upward by a bullet 95. A bellows-type telescopic bellows 97 is mounted inside the inner cylinder 93, and the inner cylinder 93 is extended downward against the ammunition 95 by press-fitting exhaust gas from the air pipe 99.

In the above embodiment, when the engine 61 is driven and a clutch (not shown) is connected, the rotor shaft 23 rotates in the direction of arrow A while rotating in the direction of arrow B in FIG.
Go forward with 59. If the front frame 5 and the rear frame 7 are fixed at appropriate angles by locking the pins 17 in the appropriate pin holes 15 and 19 in advance, the rotor shaft 23 and the axle 57 will not be aligned with each other. Even if the wire 53 is not connected, the vehicle body 3 turns around the intersection with the forward movement even when the wire 53 is not connected, and the circular groove is excavated by the tilling blade 25. The soil dug up by the plowing blade 25 and splashed upward is guided by the guide cover 43 and received by the gutter.
It falls inside 41, is sent by the screw conveyor 47, falls from the discharge port 45, and is accumulated outside the circular groove.
At the same time, the root of the groove wall is the root cutting cutter 27, a large number of blades 31 of 27
The root cutting work required for transplanting trees can be easily performed.

In this case, the rotor shaft 23 and the axle shaft 57 rotate in opposite directions, and the reaction force applied to the vehicle body 3 is applied at an angle inclining to each other from the front-back direction. The turning radius is gradually increased by being pushed outward, and it is easy to capsize outward due to the movement of the center of gravity.
In order to prevent this, one end may be pivotally supported at a position serving as the center of rotation, and a connecting body that connects the other end to the vehicle body 3 may be provided. For example, a wire support ring 67 may be provided on the outer periphery of the trunk 65.
And the support plate 81 is pressed and fixed to the tree trunk 65 by the bolt 79. One end of the wire 53 is wound around the outer circumference of the cylindrical portion 69 and locked to the hook 83, and the other end is locked on one side of the cover 37.
If the vehicle body 3 is run while being locked to 55, an accurate circular groove can be excavated and the vehicle body can be prevented from falling. Further, by using the wire support trunk 67, damage to the epidermis of the trunk 65 can be prevented.

After excavating the circular groove, when carrying out the rooting machine in the groove to the ground, the operator switches the exhaust gas of the engine to the jacking device 87 by the switching valve operating lever (not shown), and the bellows 97 The cylinder 93 extends and the entire root cutting machine is lifted. The operator raises the height appropriately while maintaining balance with the handle 63, rotates the root cutting machine 1 horizontally by 90 degrees around the jacking device 87, and then contracts the jacking device 87 and suspends it in the groove. The wheels 59 are placed on the top of the wheels, and the wheels 59 are run to be carried out to the ground.

When the blade portion 31 is worn, the saw chain 39 is replaced with a saw chain of the same standard.

(Effects of the Invention) According to the present invention, since a large number of blades can be provided, the depth of cut for each blade becomes small when cutting a root, and a large force does not act on the root, and thus a large vibration occurs. And the soil that adheres to the roots will not fall off,
Growth is not hindered. In addition, it is possible to extend the life of the blade by using only a super hard material for the blade, and at the time of wear it is sufficient to replace only the saw chain with a commercially available saw chain and it can be replaced at low cost and easily. It is a thing. Further, unlike the chain saw, since the guide piece does not swing in the groove, soil does not enter the groove to prevent the root cutting cutter from rotating.

In the present invention, "inward" and "outward" mean that the direction of the turning center is inward and the opposite direction is outward. The root cutting cutter is fixed to the inner end of the rotor shaft,
They may be provided at the outer ends together, or a plurality of root cutting cutters may be provided in parallel between them.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view of an embodiment of the present invention, FIG. 2, and FIG.
The figures are plan view and side view, respectively, and FIG. 4 is the front view of the main part.
FIG. 5 is a side sectional view of a main part, FIG. 6 is a side view of a root cutting cutter, FIG. 7 is a front sectional view taken along line VII-VII of FIG. 6, and FIG.
FIG. 9 and FIG. 9 are a plan view and a side sectional view, respectively, of the wire support ring, and FIG. 10 is a front sectional view of the jacking device. 23 …… Rotor shaft 25 …… Tilling blade 27 …… Root cutting cutter 30 …… Disk 33 …… Coupling link 34 …… Cutter link 39 …… Saw chain 57 Axle 59 …… Wheel

Claims (1)

[Scope of utility model registration request] 1. A horizontal rotor shaft 23, to which a plowing blade 25 is radially fixed, is provided in front of a driving vehicle 59, and the wheel is provided.
The axle 57 of 59 and the rotor shaft 23 are respectively fixed on a straight line that relatively intersects with each other, and at the end of the inner side of turning of the rotor shaft 23, the root cutting cutter 27 is fixed in the root cutting machine,
Connection link 3 in which the root cutting cutter 27 is connected in a chain shape
A root cutting machine characterized in that a saw chain 39 in which cutter links 34 are connected at appropriate intervals between 3, 33, ...