JPS6219121Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a lateral vibration prevention mechanism for a tillage device, and more specifically, a rotor that is curved into a spherical shape with a gentle arc relative to the center line in the traveling direction of the tractor body. This invention relates to the improvement of a tilling device that is installed so as to cut and turn the soil by slightly displacing the direction of rotation and forcibly driving the tilling device. The purpose is to obtain a stable wheel that has a lateral vibration prevention function.

One method of cultivating soil is to cut the soil by driving a rotor, which is curved into a spherical shape with a gentle arc, by slightly displacing its rotation direction in the direction of travel. A method of performing inversion has been previously proposed by the applicant.

However, in the method described above, in which the rotor is rotated with its direction of rotation slightly displaced from the direction of travel, cutting and turning the soil is achieved, lateral vibration occurs in the tillage device. However, there is a problem in that the mounting angle of the rotor is displaced due to the lateral runout. In other words, the mounting angle of the rotor has a subtle effect on the cutting and turning of the soil, but tillage equipment is prone to lateral vibration, and this lateral vibration can cause the rotor mounting angle to shift. As a result, it becomes impossible to obtain effective cutting and reversing action by the rotor.
It is possible to prevent the tiller from swinging by tightening the check chain provided on the lower link of the three-point link hitch to the maximum extent at the connection to the tractor body of the tiller. When the tension is applied to the maximum, the workability of the tractor body is significantly impaired as a reaction, such as hindering the operation of the handle of the tractor body.

The present invention is an attempt to improve the above-mentioned conventional circumstances by improving the stabilizing wheels that support both ends of the tilling device.
That is, a stabilizing ring having a grounding part and a disc blade body is provided,
By supporting the load at both ends of the tiller with the ground-contacting part, it prevents it from sinking, and by digging the disc blade into the soil, it prevents the stabilizing wheel from swinging in the width direction. The gist of this is to prevent the tilling device from swinging sideways by regulating the

The feature of the present 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, and both rotating shafts have a gentle arc and are curved into a spherical shape. A tillage device consisting of several rotors mounted on shafts at regular intervals, which comprises a ground-contacting part at both ends of the rotating shaft, and a disc blade body formed so as to protrude downward from the ground-contacting part of the ground-contacting part. The reason is that it is configured to have a stabilizing ring.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings. 1 to 7 are drawings showing the first embodiment, and in the same drawings, reference numeral 2 denotes a 3-wheel drive unit connected to the rear of a tractor body (not shown) via a hydraulic mechanism (not shown) so as to be able to rise and fall freely. A cover frame 4 is connected to the three-point link hitch 2, which is a point link hitch. The cover frame 4 is provided in a substantially eight-shape shape with both left and right ends protruding diagonally rearward, and a gear box 6 containing a pair of bevel gears 5, 5' is fixed at an intermediate position of the cover frame 4. Ru. Of both bevel gears 5, 5', the transmission shaft 7 supporting one bevel gear 5 is connected to a PTO shaft (not shown) of the tractor body, while the other bevel gear 5'
A sprocket 8A is mounted on the transmission shaft 7' which supports the transmission shaft 7'.

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 body 1.

Further, the chain case 9 is provided so that a part of its lower end bulges out toward the front (hereinafter referred to as a "bulge part 9'").In other words, the chain case 9 has a bulge part 9'. Its overall shape is approximately L-shaped, and another transmission shaft 10B is installed in the bulged portion 9' in parallel with the transmission shaft 10A in the width direction of the fuselage. Axis 10A, 10
Sprockets 8B and 8C are mounted on shafts B in correspondence with the sprocket 8A, and a chain 11 is stretched between each sprocket 8A, 8B and 8C.

Further, the transmission shafts 10A and 10B are attached to the bulged portion 9'.
Another power transmission shaft 10C is located in between and is installed parallel to both power transmission shafts 10A and 10B. The transmission shaft 10C is connected to the transmission shafts 10A, 1 by engaging the sprocket 8D mounted on the transmission shaft 10C with the outer side of the chain 11.
It is provided so that it can rotate in the opposite direction to 0B.

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. The rotors 13, 13 are formed into a substantially disk-like shape with an arcuate curved surface, as if a part of a sphere was 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 that it points toward the center of the fuselage. Further, a rotary pawl 14 is provided on the transmission shaft 10C so as to be able to scatter excavated soil toward both left and right sides.
Also, at the bottom of the swollen portion 9' is a residual tillage treatment claw 15.
is fixed downward.

On the other hand, brackets 20, 20 extend rearward at both ends of the cover frame 4, and vertical shafts 21, 21 are provided at the rear ends of the brackets 20, 20, the mounting angle of which can be adjusted arbitrarily. The vertical shafts 21, 21 are provided with stabilizing wheels 23, 23 at their lower ends. The stabilizing wheels 23, 23 include a blade body 23a and a grounding piece 23b formed in a disc shape.
The grounding piece 23b is fixed downwardly to the lower end of the vertical shaft 21, and the blade body 23a is formed by supporting the vertical shaft 21 so that it can freely rotate in the front-rear direction.

Next, its effect will be explained.

The traveling action of the tractor body is obtained by driving the engine (not shown) mounted on the tractor body and transmitting the driving force to the traveling mechanism, while the driving force is transmitted from the PTO shaft to both transmission shafts 10A,
10C, and a state is obtained in which the transmission shaft 10A rotates forward (in the direction of arrow a) and the transmission shaft 10C rotates in reverse (in the direction of arrow b). and transmission shaft 10
The rotation of A is transmitted to each rotor 13 via the rotating shafts 12, 12, and each rotor 13 slips and rotates against the soil, so that a soil cutting action is obtained and the soil is cut in this way. While the action of reversing the soil through the arcuate curved surface of the rotor 13 is continuously obtained, the rotation of the transmission shaft 10C is transmitted to each rotary pawl 14, and the center of the machine body is rotated through the reverse rotation of the rotary pawl 14. The effect of flipping up the soil in the area toward the front of the rotor 13 can be obtained. That is, the surface tillage effect is obtained through the rotational drive of the rotor 13 and the rotary claw 14, but when the above-mentioned tillage operation is being carried out, the grounding piece 2 of the stabilizing wheel 23
3b comes into contact with the tiller to prevent the tiller from sinking, while the blade 23a bites into the tiller and rotates in the direction of travel, thereby preventing the tiller from sinking. This provides the effect of regulating lateral vibration during work.

The present invention is constructed as described above.
As mentioned above, the rotor, which is formed into a spherical shape with a gentle arc, is rotated at an angle that is slightly displaced with respect to the direction of movement of the aircraft to cut and turn the soil. By attaching a stabilizing ring consisting of a grounding piece and a disk blade to the tilling device, it has become possible to obtain a lateral vibration prevention effect in addition to a subsidence prevention effect. This has made it possible to ensure effective cutting and reversing action by the rotor. In particular, in the case of the present invention, by combining the grounding piece with the disc blade body to form a stable ring,
It was possible to increase the ground contact area, which made it possible to obtain an effective subsidence prevention effect.

[Brief explanation of the drawing]

Figures 1 to 7 are drawings showing a first embodiment, in which Figure 1 is a perspective view showing the operating state of the tilling device equipped with a guide wheel according to the present invention, and Figure 2 is an enlarged view of the same. A perspective view, FIG. 3 is a plan view, FIG. 4 is a side sectional view of the gearbox and chain case, and FIG.
The figure is a perspective view showing the operating state of the stabilizing ring part.
The figure is a perspective view of the stabilizing wheel, and FIG. 7 is a schematic diagram showing the plowed state. 2... Three-point link hitch, 4... Cover 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, 20
... Bracket, 21 ... Vertical shaft, 23 ... Stable ring, 23a ... Blade body, 23b ... Grounding piece.

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 that are curved into a spherical shape with a gentle arc are installed on both rotating shafts at a constant rate. A tillage device comprising shafts mounted at intervals, characterized in that a stabilizing ring consisting of a grounding piece and a disk blade formed so as to protrude downward from the grounding piece is provided at both ends of the rotating shaft. A mechanism to prevent horizontal vibration of tillage equipment.