JPH0130961Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a tilling device, more specifically, a tilling device that is provided with a disk curved in an arc shape so that it can be forcibly driven to obtain soil cutting and turning action. The purpose is to simultaneously crush and level the surface of the soil that has been cut and turned over by a disk. That is, the present invention crushes the surface layer of the soil that has been cut and turned over by the disk by rotating the crushing claw provided at the rear of the disk in the opposite direction to the rotating direction of the disk. The feature of this invention is that the soil surface is leveled by simultaneously crushing the soil and re-inverting the soil.The gist of the present invention is to create an appropriate gearing angle behind the tractor body. A tillage device in which a plurality of discs curved in an arc shape are mounted at regular intervals on a rotating shaft horizontally mounted so as to be forcibly driven. The reason why the soil crushing claw is provided so as to be forcibly driven is that the soil crushing claw is arranged so as to rotate in a direction opposite to the above-mentioned disk.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings. In the drawing, 1 is a four-wheeled tractor body, 2 is a three-point link hitch that is connected to the rear of the tractor body 1 via a hydraulic mechanism (not shown) so that it can be raised and lowered, and 3 is also connected to the rear of the tractor body 1 in the rear direction. This shows the PTO shaft protruding towards the target. 4
is a frame rod installed horizontally between the left and right lower links of the three-point link hitch 2, and the frame rod 4 has an appropriate gearing angle with respect to the center line in the traveling direction of the tractor body 1. It is installed diagonally towards the rear. The frame rod 4 is formed into a hollow pipe shape, and a drive shaft (not shown) is provided in the hollow part.
is built-in. In addition, a gear box 5 is installed at the intermediate position of the frame rod 4 in correspondence with the PTO shaft 3.
The tip of the PTO shaft 3 is connected to a bevel gear mechanism (not shown) built into the gear box 5.

A chain case 7 containing a chain mechanism (not shown) is fixed to one end of the frame rod 4, that is, one end located diagonally to the front, and a side plate 8 is fixed to the other end, that is, one end located diagonally to the rear. .
Furthermore, a rotating shaft 9 is horizontally suspended between the lower ends of the chain case 7 and the side plate 8 that extend downward from the frame rod 4, and a plurality of disks 10 are mounted on the rotating shaft 9 at regular intervals. It is mounted on a shaft.
More specifically, each disk 10 is formed in an arc shape with a gently curved surface, just like a part of a sphere is cut out, and is mounted on the rotating shaft 9 with its concave surface facing in the direction of travel.

Further, a chain case 17 having a built-in chain mechanism 16 is pivotally connected to the chain case 7, and a support arm 18 is pivotally connected to the side plate 8. The same chain case 17 and support arm 18 are gate-shaped rods 19
and a lift mechanism 20 so as to be freely movable up and down. A rotary shaft 21 is horizontally mounted between the chain case 17 and the rear end of the support arm 18 extending in the rear direction, and a crushing claw 22 is mounted on the rotary shaft 21. 21 and the crushing claws 22 are provided so as to rotate in the opposite direction (reverse rotation) with respect to the rotation direction (forward rotation) of the rotating shaft 9 and the disk 10.

On the other hand, a bracket 11 is provided at one end of the frame rod 4 diagonally toward the rear, extending from the side plate 8.
A stabilizing wheel 12 is supported at the rear end of the bracket 11. More specifically, the stabilizing wheel 12 has a disk portion 12a.
It is formed with a pair of truncated conical parts 12b, 12b protruding from both the front and back surfaces of the disk part 12a, and is provided in a forward inclined shape toward the inside of the fuselage.

Next, its effect will be explained.

By driving an engine (not shown) mounted on the tractor body, the driving force is transmitted to the traveling mechanism to obtain a traveling action of the tractor body. On the other hand, the driving force is transmitted to the rotary shaft 9 via the PTO shaft 3, the bevel gear mechanism in the gear box 5, the drive shaft in the frame rod 4, and the chain mechanism in the chain case 7.
The effect of rotating at a speed slightly faster than the running speed of the vehicle (approximately 3.5 times the vehicle speed) is obtained. More specifically, the action of cutting the soil is obtained through the rotation action of each disk 10, and the action of reversing the soil thus cut is continuously obtained.

Further, the rotation of the drive shaft within the frame rod 4 is transmitted to the rotary shaft 21 via the chain mechanism within the chain case 17, so that the effect of rotating each of the crushing claws 22 is obtained. That is, the rotation of the soil crushing claws 22 provides the effect of finely crushing the surface layer of soil, but in the present invention, the soil crushing claws 22 are provided so as to rotate in the opposite direction to the disk 10. As a result, the action of crushing the soil in the surface layer is obtained, and at the same time, the action of re-inverting the soil, that is, the action of returning the soil, which has been once inverted by the disk 10, back to its original direction is obtained.
In this way, by obtaining the action of re-inverting the soil by the soil-crushing claws 22, each piece of soil can be exactly turned over in its place, and as a result, the field surface is uneven (the work start side is low, and the work This can prevent the end side from becoming high. In other words, the evenness of the field surface can be maintained.

The present invention is constructed as described above.
With the above configuration, in addition to obtaining an ideal tillage effect by finely crushing the surface layer of the soil that has been cut and inverted, the soil is also re-inverted at the same time as the surface layer of the soil is crushed. By doing so, in other words, by obtaining a state of in-situ reversal, it has become possible to obtain evenness of the field surface.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entire tilling device according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a schematic explanatory view showing the operating state. 1... Tractor body, 2... Three-point link hitch, 3... PTO axis, 4... Frame rod, 5...
Gear box, 7... Chain case, 8... Side plate, 9... Rotating shaft, 10... Disk,
11... Bracket, 12... Stable wheel, 12a...
...Disc part, 12b...Truncated cone part, 17...Chain case, 18...Support arm, 19...Gate-shaped rod,
20... Lift mechanism, 21... Rotating shaft, 22...
Crushed nails.

Claims (1)

[Scope of utility model registration request] A tillage device in which a plurality of spherically curved disks are mounted at regular intervals on a rotary shaft which is horizontally mounted at an appropriate gearing angle so as to be forcibly driven at the rear of the tractor body. At the rear of the rotary shaft, another rotary shaft is mounted horizontally so as to be forcibly driven in parallel with the above-mentioned rotary shaft, and crushing claws are mounted on the rotary shaft at regular intervals. A soil crushing mechanism in a tillage device that is arranged to rotate in the opposite direction.