JPS645441Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a tillage device, more specifically, a method of cutting and turning soil by forcibly driving a rotor that is curved into a spherical shape with a gentle arc. The purpose of this invention is to improve a tillage device, and its purpose is to make it possible to obtain flat, wide furrows without causing the inverted soil to bulge up in the center.

One method of cultivating soil is to forcibly drive a rotor that is curved into a spherical shape with a gentle arc, and the soil is cut and turned over by the rotary drive of the rotor. was previously proposed by the applicant.

However, in the above proposal, since each rotor is installed with its rotation direction at a slight angle of inclination with respect to the center line in the direction of movement of the aircraft, the soil cut and reversed by each rotor is The problem is that it bulges in the center of the fuselage, making it impossible to form a flat wide ridge.

This invention is an attempt to improve the above-mentioned problems by providing a rotary claw in the center of the machine body, and through the rotary drive of the rotary claw, the soil in the center of the machine body can be moved forward and outward. Screw blades are installed on the same axis at both ends of the rotary claw, and by further distributing the soil scattered by the rotary claw in both left and right directions, the mound in the center of the aircraft can be reduced. More specifically, each of the rotary claws is located in front of the rotor, and is driven to rotate in the opposite direction to the rotation direction of the rotor, thereby preventing soil damage in the center of the aircraft. The screw blades are positioned in front of each rotor and extend in the width direction of the machine, so that the scattered soil can be scattered over the entire plowing width of the rotary. The main feature of this invention is that a pair of left and right rotating shafts are provided at the rear of the tractor body so as to extend diagonally backward and outward. , an appropriate number of rotors having gentle arcs on both rotating shafts and forming a spherical curve are mounted on the shafts at regular intervals so that their concave surfaces face inward,
In the center of the machine, there is a shaft located in front of the rotor that points outward so that the rotary claw can rotate from the rear toward the front and upward, and the excavated soil can be scattered diagonally forward and outward. The rotary claw is constructed so that screw blades are coaxially provided at both ends of the rotary claw.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings. In each drawing, reference numeral 2 denotes a three-point link hitch which is connected to the rear of the tractor body (not shown) via a hydraulic mechanism (not shown) so as to be able to rise and fall freely, and the three-point link hit 2 has a cover frame 4 at its center. It is provided in a substantially V-shape so as to extend more diagonally toward the rear. The cover frame 4 includes a rotor 13 mounted on the rotating shafts 12, 12,
The displacement angle of 13 can be adjusted arbitrarily. That is, in the cover frame 4, a pair of left and right main frames 4B, 4B extend in both width directions from base frames 4A, 4A fixed to the three-point link hitch 2 so as to be rotatable in the front and rear directions, and a An angle adjustment plate 17 that opens a plurality of adjustment holes 17a, 17b, and 17c is fixed. Further, from the base frame 4A, adjustment frames 4C, 4C extend in both width directions from a position near the rear end, and the adjustment holes 17a, 17b, 17c are provided at the tips of the adjustment frames 4C, 4C. Connection holes (not shown) are provided in correspondence with each other, and the adjustment holes 17a, 17b, 17 are connected to the connection holes.
Select any adjustment hole in c, align the adjustment hole with the connecting hole, and insert the pin 19 between both holes.
It is provided so that it can be connected by. Further, a gear box 6 containing a pair of bevel gears 5, 5' is fixed to an intermediate position of the cover frame 4. Of both bevel gears 5, 5', the transmission shaft 7 that supports one bevel gear 5 is connected to a PTO shaft (not shown) of the tractor body, while the transmission shaft 7' that supports the other bevel gear 5' has a sprocket. 8A is mounted on a shaft. The gearbox 6 is integrally provided with a chain case 9 extending downward from the bottom thereof, and a transmission shaft 10A is installed at the lower end of the chain case 9 in the width direction of the machine body.

Further, the lower end portion of the chain case 9 is provided so as to bulge out toward the front. That is, the same chain case 9
has a portion that bulges forward in its lower end (hereinafter referred to as "bulge 9'"), and its overall shape is approximately L-shaped, and the bulge 9' has a One transmission shaft 10B is installed parallel to the transmission shaft 10A in the width direction of the fuselage. And the above sprocket 8A is attached to both transmission shafts 10A and 10B.
Sprockets 8B and 8C are mounted on shafts in correspondence with each other, and a chain 11 is stretched between each sprocket 8A, 8B and 8C. Further, in the same bulged portion 9', another transmission shaft 10C is located between the two transmission shafts 10A, 10B.
It will be constructed parallel to B. And the same transmission shaft 10
C is sprocket 8D mounted on the same transmission shaft 10C.
By engaging with the outer side of the chain 11, the transmission shafts 10A and 10B are provided so as to be able to rotate in opposite directions.

Rotating shafts 12, 12 are connected to both ends of the transmission shaft 10A via universal joints 16, 16. Both rotating shafts 12, 12 extend slightly diagonally rearward along the extending direction of the cover frame 4, and both ends thereof are supported by both ends of the cover frame 4. and both rotating shafts 12,
Rotors 13, 13 are mounted on shafts 12 at regular intervals. Both rotors 13, 13 are formed into a substantially plate-like shape with an arcuate curved surface, as if a part of a sphere is cut out, and each rotor 13, 13 has a concave surface with respect to both rotating shafts 12, 12. is mounted on an axis so as to point toward the center of the fuselage 1. Also, the transmission shaft 10C
A rotary claw is provided on the shaft so that the excavated soil can be scattered in both left and right directions. The transmission shaft 10C is located in front of each rotor 13, 13 and is provided so as to extend in both width directions,
Screw blade bodies 23, 23 are provided in the extension. Further, a residual tillage treatment claw 15 is fixedly installed at the bottom of the bulging portion 9'.

On the other hand, at both ends of the cover frame 4, brackets 20, 20 are provided extending rearward, and at the rear ends of the brackets 20, 20, vertical shafts 21, 21 are provided, the mounting angle of which can be adjusted arbitrarily. Stabilizing wheels 22, 22 are mounted on the lower ends of the vertical shafts 21, 21 so as to be freely rotatable. The stabilizing wheels 22, 22 are composed of a blade body 22a formed in a disk shape and a grounding ring 22b formed in a cylindrical shape.
The blade 2b has a diameter smaller than that of the blade 22a, and is formed by being fixed concentrically to the inner surface of the blade 22a.

Next, its effect will be explained.

By driving the engine (not shown) mounted on the tractor body, the driving force is transmitted to the traveling mechanism and the traveling action of the tractor body is obtained. The signal is then transmitted to each transmission shaft 10A, 10b, and 10C. That is, a state is obtained in which the transmission shaft 10C rotates reversely (in the direction of arrow b) while both transmission shafts 10A and 10B rotate in the forward direction (in the direction of arrow a). The rotation of the transmission shaft 10A is further transmitted to each rotor 13, 13 via the universal joints 16, 16 and the rotating shafts 12, 12. and the above rotating shaft 1
By rotating the rotors 2 and 12 at a speed slightly faster than the traveling speed of the tractor body 1 (approximately 3.5 times the traveling speed of the vehicle), a soil cutting action can be obtained through the action of the rotor 13 slipping against the soil. At the same time, the effect of continuously inverting the soil thus cut through the arcuate curved surface of the rotor 13 is obtained.

On the other hand, the rotation of the transmission shaft 10C is controlled by each rotary pawl 14.
is transmitted to the screw blade body 23,
Since the transmission shaft 10C is provided to rotate in the opposite direction, each rotary claw 14 is driven into the soil from a rear position toward the front with respect to the traveling direction of the machine body 1. As the rotary claw 14 is driven forward from the rear of the machine body in this way, the excavated soil is thrown up from the soil surface in front of the machine body and directed diagonally to both sides with respect to the direction of movement of the machine body 1. The effect of scattering the particles is obtained. The excavated soil thus scattered diagonally to both sides is conveyed in both width directions by the screw blade 23 provided at the extension of the rotary claw 14, and the excavated soil is dispersed over the entire plowing width. You can get the effect of In this way, the soil in the center of the machine is excavated by the rotary claws 14, and after the excavated soil is distributed over the entire plowing width by the screw blade 23, the soil cut by the rotor 13 is By reversing the excavated portion, it is possible to prevent the central part of the fuselage from rising. That is, flat wide ridges are formed.

In addition, as described above, the rotary claw 14 is driven from the rear position and excavation is performed in such a way that it flips up from the lower layer toward the surface layer at the front position, so that the straw etc. scattered on the soil surface are removed from the rotary claw 14 and the rotation shaft. It is possible to prevent the straw from wrapping around the rotary claw 12, and to effectively bury the straw etc. in the inverted soil through the flipping action of the rotary claw 14.

The present invention is constructed as described above.
As mentioned above, a spherical rotor with a gentle arc is provided at the rear of the tractor body so that it can be freely rotated at a slight displacement angle with respect to the traveling direction of the tractor body, and the rotary action of the rotor is In a tillage device that performs tillage by cutting and inverting soil through a rotor, a rotary claw is located at the center of the machine in front of the rotor and rotates in the opposite direction to the direction of rotation of the rotor. and a screw blade are installed on the same axis, and the rotary pawl excavates soil from the rear of the aircraft toward the front, scattering the soil in front of the rotor, and using the screw blade to scatter the soil. Convey in both width directions,
By distributing the soil over the entire plowing width, it was possible to prevent the soil surface from rising at the center of the machine, and it became possible to form a flat, wide ridge.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the entire tilling device according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side sectional view of the gearbox and chain case portion, and Figs. 4 and 5 are the tilling operation state. FIG. 2... Three-point link hitch, 4... Cover frame, 4A... Base frame, 4B... Main frame, 4C... Adjustment frame, 5, 5'... Bevel gear, 6... Gear box, 7, 7'... Transmission shaft, 8A, 8B, 8C, 8
D...Sprocket, 9...Chain case, 9'
...Bulging portion, 10A, 10B, 10C... Transmission shaft, 11... Chain, 12... Rotating shaft, 13...
Rotor, 14...Rotary claw, 15...Remaining tillage processing claw, 16...Universal joint, 17
... Angle adjustment plate, 17a, 17b, 17c ... Adjustment hole, 19 ... Pin, 20 ... Bracket, 21
... Vertical axis, 22 ... Stable ring, 22a ... Blade body, 2
2b...Grounding ring, 23...Screw blade body.

Claims (1)

[Scope of utility model registration request] A pair of left and right rotating shafts are provided at the rear of the tractor body so as to extend diagonally backward and outward, and a suitable number of rotors each having a gentle arc and forming a spherical curve are installed on both rotating shafts. The shafts are mounted at regular intervals so that the concave surface faces inward, and the rotary claw is located forward of the rotor in the center of the body and can rotate from the rear to the front and upward, and the excavated soil is moved diagonally forward and outward. A tillage device that has a shaft that faces outward so as to be able to scatter objects in the opposite direction, and has screw blades coaxially provided at both ends of the rotary claw.