JPH035201Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a mechanism for adjusting the inclination angle of a stable wheel in a tillage device using a disc, and more specifically, a rotating shaft mounted at regular intervals so as to be able to forcibly drive a spherically curved disc. The stability wheel is provided at one end of the rotating shaft, which is horizontally installed across both widths of the tractor body with an appropriate angle of inclination (giang angle), near the rear end to receive the lateral pressure of the disk. This invention relates to a tilt angle adjustment mechanism.

One of the methods of cultivating soil is to forcibly rotate a disk that is curved into a spherical shape with a gentle arc, and obtain a tilling action by rotating the disk. A method in which a plurality of disks are mounted at regular intervals along a rotating shaft horizontally installed across both widths of a tractor with a gearing angle, and soil is cut and turned over through forced rotation of the disks. has been proposed first.

In the above-mentioned tilling method, lateral pressure is applied to each disk by rotating each disk at a constant angle of inclination (gewing angle) with respect to the center line in the direction of movement. In order to prevent this lateral pressure from impairing the straightness of the tractor body, a stabilizing wheel for receiving the lateral pressure of the disk is attached to one rear end of the rotating shaft as a supporting wheel for the disk. More specifically, the stable ring consists of a disc blade body and a grounding ring formed concentrically with a smaller diameter than the disc blade body,
It is designed to receive lateral pressure by biting the disc blade into the tiller, but the lateral pressure depends on the nature of the tilled soil (e.g. clay, wetland) and condition (e.g. dry soil, wet soil). Change. The stabilizer wheel is designed to cope with such changes in lateral pressure by appropriately adjusting the angle of inclination of the stabilizer wheel, but with conventionally structured stabilizer wheels, adjustment of the angle of inclination is not possible. The problem was that it was troublesome.

The present invention is an attempt to improve the conventional situation in view of the above-mentioned circumstances, and the purpose of the present invention is to enable the tilt angle of the stabilizing wheel to be adjusted by a simple operation.

That is, the present invention is characterized in that the stability wheel can be adjusted to any inclination angle by adjusting the mounting angle of the soil scraping plate attached to the stability wheel. The gist is that a support shaft bent in a substantially V-shape is provided at the rear end of an arm that extends rearward from one end of the rotating shaft that supports the disk, and that the support shaft is rotatably adjustable. The stable wheel is mounted on a shaft so that it can freely rotate, while a bracket is provided protruding from the supporting shaft in the radial direction of the stable wheel.
The bracket has a pair of sloped surfaces, which are bent to have a V-shaped cross section, and a mud scraping board is formed by providing slits along the ridge lines of the bent portions, with the bent portions facing the direction of rotation of the stabilizing wheel. , and is configured so that the stabilizing ring is inserted through the slit.

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 via a hydraulic mechanism (not shown) so that it can be raised and lowered freely, and 4 is a horizontal suspension between the left and right lower links of the three-point link hit 2. The frame rod 4 is provided diagonally so as to extend from diagonally forward to diagonally rearward at an appropriate gearing angle with respect to the center line in the traveling direction of the tractor body 1.

Although not shown, the frame rod 4 is formed in the shape of a hollow pipe, and a drive shaft is housed in the hollow portion. A gear box 5 is also provided at an intermediate position of the frame rod 4 in correspondence with a PTO shaft protruding rearward from the tractor body 1.
The PTO shaft is provided so as to be connected to a bevel gear mechanism built into the gear box 5.

A chain case (not shown) containing a chain mechanism 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.
Further, a rotating shaft 9 is horizontally suspended between the lower ends of the chain case and the side plate 8 extending 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.

On the other hand, a stabilizing roller 14 is connected diagonally in front of the frame rod 4 so as to be freely rotatable. An arm 16 is provided at one end of the frame rod 4 diagonally rearward and extends diagonally rearward and inward from the side plate 8, and at the rear end of the arm 16 is a support shaft 15 bent into a substantially V-shape. is fixed to the support shaft 15 so as to be rotatably adjustable through tightening with bolts and nuts 17, and a stabilizing ring 22 is rotatably supported at the tip of the support shaft 15. The stabilizing ring 22 consists of a disc-shaped blade 22a and a cylindrical grounding ring 22b.
b 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.

A bracket 24 is provided to protrude in the radial direction of the stable wheel 22 from a support shaft 15 that supports the stable wheel 22, and a mud scraping plate 23 is attached to the tip of the bracket 24. The mud-scraping plate 23 has a pair of inclined surfaces 23a, 23a, and is bent to have a V-shaped cross section, and a slit 23b is formed along the ridge line at the bent portion, extending one end of the base side along the longitudinal direction. It is set up so that it is open. The mud scraping plate 23 has a bent portion facing the stabilizing wheel 22 in the direction of rotation of the blade body 22a (direction of arrow a), and a slit 23.
The blade 22a is attached to the blade 22a so as to be inserted through the blade 22a in the radial direction.

Next, its effect will be explained.

By driving an engine (not shown) mounted on the tractor body 1, the driving force is transmitted to the traveling mechanism and the tractor body 1 can be driven. On the other hand, the driving force is transmitted from the PTO shaft to 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 to the rotating shaft 9.
, and each disc 10 runs at a speed slightly higher than the traveling speed of the tractor body 1 (about 3.5 times the vehicle speed)
The action of rotating can be obtained.

In this way, the action of cutting the soil and reversing the cut soil through the rotation of the disks 10 is continuously obtained, so that lateral pressure is applied to each disk 10, and this lateral pressure is applied to the stabilizing wheel 22. The action of receiving the lateral pressure, more specifically, the action of receiving the lateral pressure is obtained by the blade body 22a biting into the tiller. As the blade body 22a bites into the tiller in this way, mud adheres to the blade body 22a.
The mud attached to the blade 22a is removed by the slit 23b.
When passing through, the mud collides with both side surfaces 23a, 23a, thereby providing an effect of scraping off the mud adhering to both the front and back surfaces of the blade body 22a.

By unfastening the bolt nut 17 again, the support shaft 15, the bracket 24 protruding from the support shaft 15, and the mud scraping plate 23 attached to the bracket 24 are free with respect to the arm 16, that is, they can rotate freely. It becomes possible to move. In such a state, by rotating the mud scraping plate 23 in the front-rear direction, a state is obtained in which the support shaft 15 rotates together with the mud scraping plate 23. By being bent in an F-shape, the angle of inclination of the stabilizing wheel 22 can be adjusted in a stepless manner by rotating the support shaft 15.

The present invention is constructed as described above.
By installing the mud scraping plate as described above, it is possible to simultaneously scrape off the mud adhering to both the front and back sides of the stabilizing wheel (blade body), which makes it effective for plowing the stabilizing wheel (blade body). In addition to being able to obtain a good biting action, the inclination angle of the stabilizing wheel can be easily adjusted by rotating the mud scraping plate.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the entire tilling device equipped with a mechanism for adjusting the inclination angle of a stabilizing wheel according to the present invention;
3 is a sectional view thereof, FIG. 4 is a front view of the mud scraping plate, and FIG. 5 is a sectional view taken along line A-A. 1... Tractor body, 2... Three-point link hitch, 4... Frame rod, 5... Gearbox, 8
... Side plate, 9 ... Rotating shaft, 10 ... Disk, 14 ... Stable roller, 15 ... Support shaft,
16...Arm, 17...Bolt and nut, 2
2... Stability wheel, 22a... Blade body, 22b... Grounding ring, 23... Mud scraping plate, 23a... Inclined surface, 23
b...Slit, 24...Bracket.

Claims (1)

[Scope of utility model registration request] A plurality of discs formed in a spherical shape with a gently curved surface are mounted on a rotary shaft that is installed obliquely at an appropriate gearing angle across both width directions of the tractor body so as to be able to be forcibly driven. In the tillage device using a disc, a support shaft bent in a substantially V-shape is provided at the rear end of an arm extending rearward from one end near the rear of the rotating shaft, and the support shaft is rotatably adjustable. A stable ring is mounted on the shaft so that it can rotate freely, and a bracket is provided that projects from the supporting shaft in the radial direction of the stable ring.The bracket has a pair of inclined surfaces and has a V-shaped cross section. A disk comprising a mud scraping plate that is bent and formed with slits along the ridge line of the bent part, and is attached so that the bent part faces the rotation direction of the stabilizing wheel and the stabilizing ring is inserted through the slit. A mechanism for adjusting the tilt angle of the stabilizing wheel in a tillage device.