JPH081A - Tilling rotor - Google Patents

Abstract

PURPOSE:To provide a tilling rotor being attached to a tiller, forming a wide culture ridge, widely earthing up and forming a fine furrow. CONSTITUTION:This tilling rotor is attached to a tiller. The tilling rotor comprises an approximately circular outer peripheral edge of tilling pawls 12 fitted to pawl fixing parts 11, each tilling pawl 12 is extended long in such a way that a tip part spread from a fixing base part is not superimposed on the adjoining tilling pawl in a side view, is bent so as to gradually project from the approximately vertical fixing base part toward the outside and forms a throwing part at the tip part. The width of the throwing part is gradually enlarged from the fixing base part toward the throwing part. The cross-sectional shape of the throwing part has an inside projected face and an outside recessed part. The whole parts from the fixing base part to a tilling action part at the tip side have such elasticity to be elastically deformed by driving resistance into soil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cultivating rotor which is mounted on a cultivator and is capable of forming wide cultivation ridges, wide soil gathering, and forming fine grooves.

[0002]

2. Description of the Related Art Conventionally, a plurality of pawl mounting portions are provided at equal intervals in a radial direction on the circumference of a cultivating shaft that horizontally projects from the lower end of a power transmission case of a cultivator, and the cultivating pawls are mounted on these pawl mounting portions. A cultivating rotor is known, which is equipped with a base portion and is used for cultivating soil, gathering soil, and forming grooves. Further, the tilling claw attached to the tilling rotor has a short length in the circumferential direction of rotation and has a small amount of lateral overhang (eccentricity).

[0003]

In the above-mentioned conventional tilling rotor, since the length of the tilling claw in the rotational circumferential direction is short and the lateral overhanging amount is small, for example, the tilling work for a house is performed. When trying to widen the plowing width in order to do it, the array of tillers had to be divided in the width direction. Therefore, the lateral discharge of the cultivated soil becomes uneven,
The rotation of the plowing rotor caused the plowing of the plowing soil, which made it impossible to form clean wide ridges and grooves. In addition, the bottom surface of the ditch becomes uneven, which not only increases the required power, but also causes a problem that the plowing soil cannot be discharged laterally (laterally) smoothly. The present invention
The purpose is to solve the above problems.

[0004]

In order to achieve the above object, the present invention provides a plurality of pawls at equal intervals in the radial direction on the circumference of a tiller shaft projecting horizontally from the lower end of a power transmission case of a tiller. In a cultivating rotor having mounting parts and mounting bases of the cultivating claws attached to these claw mounting parts, the cultivating rotor has a substantially circular outer peripheral edge of the cultivating claws mounted on the claw mounting parts, Is extended long enough that the tip extending from the mounting base does not overlap with the adjacent tillage claws in a side view, and is curved so that the tip gradually extends outward from the almost vertical mounting base, and the projection is provided on the tip. The width of the cross section in the width direction is convex on the inside and concave on the outside, and the width of the cross section in the width direction is convex, and the outside is concave. of Characterized in that it has elasticity enough to be elastically deformed by Chikomi resistance.

[0005]

With the above-mentioned structure, the tiller rotor of the present invention is
When the rotor rotates, it is driven into the soil from the attachment base of the tiller, the soil moves laterally along the circumference of the tiller, and the bottom of the groove is evenly cut to form a clean groove, The cultivated soil is largely released to the side by the protruding part of the tilling claw to form a wide ridge or a wide gravel without causing a rotation. And the work suitable for a house etc. can be performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In FIG. 3, reference numeral 1 is a power cultivator. The power cultivator 1 has a pair of left and right traveling wheels 3, an engine 4 is mounted on the rear side of the body frame 2, and the power cultivator is operated at the center of the body frame 2. The handle 5 is projected rearward. In front of the traveling wheels 3 and the engine 4, a transmission case 6 that receives the power that has been shifted from the engine 4 via a transmission is provided in a forwardly inclined shape, and a cultivator that horizontally projects from the lower end of the transmission case 6. The tiller rotor 7 according to the present invention is attached to the shaft 6a so as to rotate in the upcut direction. A cultivating part cover 8 is provided above the cultivating rotor 7, and a pair of left and right gauge wheels 9 are provided on the front side of the transmission case 6 and the cultivating rotor 7. The cultivating rotors 7 are arranged on both the left and right sides of the transmission case 6 in the case of FIG. 3, but they may be arranged on only one of the left and right sides.

As shown in FIGS. 1 (a), 1 (b) and 2, the tiller rotor 7 has a pin hole 10a with respect to the tiller shaft 6a.
On the outer peripheral surface of the cultivating shaft mounting cylinder 10 to be mounted by inserting a pin into the claw, three claw mounting parts 11 are provided at equal intervals in the radial direction, and the mounting base parts 12a of the cultivating claws 12 are attached to these claw mounting parts 11, respectively. It is mounted with mounting bolts 13. The outer peripheral edge of the tilling claw 12 attached to the claw attaching portion 11 is shown in FIG.
As you can see, it is almost circular. Each of the tilling claws 12 is extended to such an extent that the tip end portion extending from the mounting base 12a does not overlap the adjacent tilling claws 12 in a side view. The mounting base portion 12a is attached to the claw mounting portion 11 and extends substantially vertically. The mounting base portion 12a extends while curving such that the working portion of the tilling claw 12 gradually projects outward (eccentric) from the mounting base portion 12a. Part 1
2b is formed. Further, the width of the tilling claw 12 is gradually widened from the attachment base portion 12a to the discharge portion 12b.

A single-edged blade edge 12c is formed inside the outer peripheral edge of the tilling claw 12. As shown in FIG. 1B, the cross-sectional shape of the tilling claw 12 in the width direction has a concave surface 12 on the outer side.
d, the inside is curved so as to form a convex surface 12e. The entire plowing action portion from the attachment base portion 12a of the plowing claw 12 to the tip side has elasticity to such an extent that when plunged into the soil, it can be elastically deformed by the plunging resistance. Further, as shown in FIG. 5, the cultivating rotor 7 is a cultivating rotor 7 in which the eccentric cultivating claws 16 and the eccentric cultivating claws 16 are integrally attached to the cultivating shaft mounting cylinder 10b with a predetermined gap and are connected in series. It may be configured. In this case, the cultivating claws 12 and the eccentric cultivating claws 16 are aligned with each other in the base end and the tip, and are respectively wrapped in a side view.

Next, the operation of the power tiller 1 having the tiller rotor 7 configured as described above will be described. In the power cultivator 1, the power from the engine 4 is transmitted by the transmission to the traveling wheels 3 and the transmission case 6, the traveling wheels 3 cause the vehicle body to travel, and the tiller rotor 7 rotates in the upcut direction. As shown in FIG. 4, for example, the tilling groove 14 and the wide ridge 15 are formed in the house.

In the tiller rotor 7 during such tilling / grooving work, when the tiller rotor 7 rotates, the mounting base 12a of the tiller claw 12 is first driven into the soil, and then the action portion of the tiller claw 12 is driven in order. , Plow soil 1
It is moved laterally along the circumference of circle 2. Therefore, the bottom surface of the tilling groove 14 is evenly cut to form a clean groove. The tilling soil is thrown outside by the outer surface of the tilling claw 12, but the length of the tilling claw 12 is long and the mounting base 1
Since the working portion of the cultivating claw 12 extends from 2a while curving so as to gradually project outward (eccentricity) and forms a bleeding portion 12b at its tip, it is thrown without cultivating soil. A wide ridge is formed by widening laterally by the portion 12b, or a wide soil digging operation is performed.

Further, the tiller 12 extends while curving so as to gradually project outward from the mounting base 12a,
The tip 12b is formed with a projecting portion 12b, and the cross section has a concave surface 12d on the outer side and a convex surface 12e on the inner side, which is curved, and the plowing pitch becomes small and the biting into the soil becomes good. It can be smoothly moved with less power and movement. Further, since the plowing claw 12 has elasticity such that it can be elastically deformed by the plunging resistance when plunged into the soil from the mounting base 12a to the entire plowing action portion on the tip side, the plowing claw 12 has Less soil adheres to improve work performance, and the soil is more easily discharged to the side.

The power tiller 1 equipped with the tiller rotor 7 of the present invention is not limited to the above-mentioned work for a house,
For example, drainage ditch work in paddy fields, compost ditch work in orchards, wide ridge creation work in general upland fields,
It can also be used for wide soil digging work. Also,
When the cultivating rotors 7 are provided on both sides of the transmission case 6, they are provided on one side, one station is used, and two stations are used in various ways.

[0013]

As described above, according to the cultivating rotor of the present invention, the cultivating rotor has a substantially circular outer peripheral edge of the cultivating pawl attached to the pawl mounting portion, and each cultivating pawl is attached from the mounting base portion. The extending tip is extended long enough not to overlap the adjacent plowing claws in a side view, and is curved so that it gradually projects outward from the almost vertical mounting base to form a protruding portion at the tip, and its width. Is gradually widened from the mounting base to the throw-out part, and the cross-sectional shape in the width direction has a convex surface on the inside and a concave surface on the outer side, and the entire plowing action part from the mounting base to the tip side is elastic due to the impact resistance to the soil. Since it has elasticity so that it can be deformed, the following effects can be obtained.

.. Since the outer peripheral edge of the tilling claw of the tilling rotor is substantially circular, it is possible to dig a clean groove and reduce the power required for tilling. ． The tiller claw of the tiller rotor is extended so that the tip extending from the attachment base does not overlap with the adjacent tiller in side view, and the tip is bent so that it gradually protrudes outward from the almost vertical attachment base. Since the throw-away portion is formed, the plowing pitch becomes small, the biting into the soil becomes good, and the lateral movement of the plowing soil and the wide-spreading work can be smoothly performed. In addition, it is possible to reduce the rotation of the tilled soil.

[0015] The width of the tilling claws was gradually widened from the mounting base toward the projecting part, and the cross-sectional shape in the width direction was curved so that the inner side was convex and the outer side was concave. Good results and a clean wide ridge can be formed. ． The entire part of the tilling action from the base of the tilling claw to the tip side has elasticity to the extent that it can be elastically deformed by the resistance to impact on the soil, so the soil adheres to the tilling claw less during the work. The performance can be improved.
It is also possible to improve the horizontal dischargeability of the tilled soil.

[Brief description of drawings]

FIG. 1 (a) is a perspective view of a tiller rotor according to the present invention,
(B) is the sectional view on the AA line of (a).

FIG. 2 is a front view of a tilling rotor according to the present invention.

FIG. 3 is a side view of a tiller equipped with a tiller rotor according to the present invention.

FIG. 4 is an operation explanatory view of a cultivator equipped with a cultivating rotor.

FIG. 5 is a front view of another embodiment of the tilling rotor according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Power tiller 2 Vehicle frame 3 Running wheel 4 Engine 5 Steering handle 6 Transmission case 6a Cultivating shaft 7 Cultivating rotor 8 Cultivating part cover 9 Gauge wheel 10, 10b Cultivating shaft mounting cylinder 10a Pin hole 11 Claw mounting part 12 12 Cultivating claw Base part 12b Exposed part 12c Blade edge 12d Concave surface 12e Convex surface 13 Mounting bolt 14 Plowing groove 15 Wide ridge 16 Eccentric plowing claw

Claims (1)

[Claims] 1. A plurality of pawl mounting portions are provided at equal intervals in a radial direction on the circumference of a cultivating shaft projecting horizontally from a lower end portion of a power transmission case of the cultivator, and mounting bases of the cultivating pawls are attached to these pawl mounting portions. In the cultivating rotor to be mounted, in the above cultivating rotor, the outer peripheral edge of the cultivating claw attached to the claw mounting part has a substantially circular shape, and each of the cultivating claws has a tip end extending from the mounting base adjacent to the cultivating claw. It extends so that it does not overlap with, and bends so that it gradually projects outward from the almost vertical mounting base to form a protruding part at the tip, and its width gradually widens from the mounting base to the protruding part. The cross-sectional shape in the width direction has a convex surface on the inside and a concave surface on the outside, and the entire cultivating part from the mounting base to the tip side has elasticity to the extent that it can be elastically deformed by resistance to hammering into soil. Tilling rotor characterized by Rukoto.