JPS6016258Y2 - disc plow - Google Patents

Description

[Detailed Description of the Invention] 1. Field of Industrial Application The present invention relates to a disc plow that rotates and creates furrows for seeding or fertilization.

1. Conventional technology A conventional disc plow of this kind is, for example,
As shown in Publication No. 49285, two perfectly circular groove-making rotary disks are both inclined in opposite directions with respect to a vertical plane, that is, they are opposed to each other in a V shape, and the distance between them is on the rear side. They were fixed to a common rotating shaft in such a way that they spread toward each other, and a ruler ring for regulating the depth was fixed to the outer surface of both grooved rotating disks.

1 The problem that the idea is trying to solve However, this method had the following problems.

(1) Both groove rotary disks are diagonal to the center line of the groove and press down on the soil from above, digging into the soil, which causes excessive force to be applied to the rotating shaft and the ruler ring. Since the groove-making rotary disk and the ruler wheel contact the ground while rotating obliquely, not only is it impossible to accurately regulate the depth, but also the groove-making rotary disk and the ruler ring cannot be smoothly rotated.

(2) Both grooves Since the distance between the rotary disks widens toward the rear, the center of the bottom of the formed groove is raised in a convex shape, making it impossible to accurately sow seeds in the center.

(3) The width of the groove created cannot be adjusted.

(4) It is not easy to assemble or disassemble.

The purpose of the present invention is to provide a disc plow that can eliminate these problems.

The disc plow of the present invention has a cylindrical bearing with a mounting rod fixed upright on the upper side, a bracket fixed on the lower side, a male threaded part at one end, and a cylindrical bearing in the middle. It has a rotating shaft with a flange and a hole drilled at the other end, and a semicircular shape whose center and rear upper part are almost vertical, but whose front upper and lower parts are inclined from the center and have a conical surface. A vertical grooving rotary disk having a hole in the center for fitting a shaft, and a circular grooving rotary disk having a smaller outer diameter than the grooving rotary disk, with one end open and the other end closed by a side plate. The rotary ruler shaft is drum-shaped and has a shaft-fitting hole in the center of the side plate, and is assembled as follows.

That is, the rotating shaft is inserted into the bearing and the pin is inserted into the pin hole to horizontally attach the rotating shaft to the bearing so as to be freely rotatable. These grooves can be formed by fitting the hole into the rotating shaft, screwing a nut onto the external thread of the rotating shaft, and sandwiching the groove-making rotary disk and the side plate of the rotary ruler shaft between the collar of the rotating shaft and the nut. The rotating disk and the rotary ruler shaft are fixed perpendicularly to the rotating shaft, and the groove-making swash plate is fixed to the bracket with bolts, and the lower periphery of the groove-making swash plate is placed close to the lower periphery of the groove-making rotary disk. A space is formed between the groove-making swash plate and the groove-making rotary disk, the lower side and the front upper surface of which are closed by the lower part and the front upper part forming the conical surface of the groove-making swash plate. This is what happens.

1.Accordingly, at the same time as one groove-making rotary disk rolls to vertically cut the soil, the lower and front upper parts of the semicircular groove-making slant plate, which form a conical surface, rotate. It digs diagonally into the soil and displaces the soil, creating a trench with one side vertical and the other side sloping.

This groove is prevented from collapsing because the groove-making rotary disk and the rear upper part of the groove-making swash plate maintain a parallel state perpendicular to each other.

The rotary ruler shaft also remains vertical and rolls with its outer peripheral surface in close contact with the ground.

The depth of the groove can be changed by replacing the rotary ruler shaft, and the width of the groove can be changed by replacing the groove making swash plate.

1st example Embodiments of the present invention will be described in detail below based on the drawings.

Figures 1 and 2 show a seeding machine, which is equipped with a machine frame A, a parallel link mechanism 1, a disc plow B according to the present invention, a soil cover plate C, and a suppression force.

The parallel link mechanism 1 connects the front and rear vertical plates 2 with two links 3 on the left and right sides, and in the center of the front vertical plate 2,
A connecting rod 4 for connecting to a tiller, tractor, etc. is fixed.

The rear vertical plate 2 of this parallel link mechanism 1 is fixed on the rear side of the machine frame A.

The top end of the lever 5 of the cover plate C is pivotally connected to a shaft 6 which is horizontally suspended in the middle of the machine frame A.

In the suppression force, the front end of a vehicle frame 9 is rotatably supported on a parallelepiped hitch 8 having a rectangular vertical through hole 7 on a shaft 10, and a suppression wheel 11 is rotated on the rear end of the vehicle frame 9. It is freely pivoted.

This suppression force is to insert the vertical through hole 7 of the hitch 8 into the machine frame A.
The hitch 8 is removably connected to the rear end of the machine frame A by fitting into a connecting rod (square rod) 12 erected at the rear end and fixing the hitch 8 with a set screw 13.

As shown in FIGS. 3 to 7, the disc plow B includes a cylindrical bearing 16, a rotating shaft 20, a groove-making swash plate 21, a perpendicular groove-making rotary disk 23, a rotating ruler shaft 26, and a disk-shaped nut 27. It consists of

The bearing 16 has a mounting rod 14 erected on its upper side, and a bracket 15 fixed on its lower side.

The rotating shaft 20 has a male threaded portion 17 at one end, a flange 18 inside the male threaded portion 17, and a bottle hole 19 at the other end.

The groove-making swash plate 21 is semicircular, and its center and rear upper portions are substantially vertical, but its front upper and lower portions are inclined from the center to form a conical surface.

The groove-making rotary disk 23 has a perfect circular shape, and a shaft-fitting hole 22 is provided in the center.
is installed.

The rotary ruler shaft 26 has a smaller outer diameter than the groove-making rotary disk 23 and has a drum shape with one end open and the other end closed by the side plate 24. A shaft fitting 25 is provided in the center of the side plate 24. ing.

This disc plow B is completed by assembling these parts as follows.

That is, the center part of the groove-forming swash plate 21 is fixed to the bracket 15 with two bolts 28, and the rotating shaft 20 is fixed to the bracket 15 with two bolts 28.
By inserting the pin 29 into the pin hole 19 through the bearing 16, the pin 29 is horizontally supported rotatably without coming off from the bearing 16, and a grooved rotary disk is attached to the external threaded portion 17 of the rotary shaft 20. These operations are performed by fitting the shaft fitting 22 of 23 and the shaft fitting 25 of the rotary ruler ring 26, screwing a nut 27 into the male threaded portion 17, and sandwiching the nut 27 and the collar 18. The groove rotating disk 23 and the rotary ruler ring 26 are vertically fixed to the rotating shaft 20 so as to rotate integrally with each other. Between the groove-making swash plate 21 and the groove-making rotary disk 23, a space whose lower side and front side are closed is formed by the lower part and the front upper part of the conical surface of the groove-making swash plate 21.

The disc plow B assembled in this manner has its mounting rod 14 passed through the vertical through hole 31 of the plow mounting boss 30 fixed to the center of the front end of the machine frame A as shown in FIGS. It is attached to the front end of the machine frame A by tightening with a set screw 32.

To use this seeding machine, the seeding machine E is mounted on the machine frame A, and the lower end of the seeding pipe 33 is placed between the groove-making swash plate 21 and the groove-making rotary disk 23 of the desk plow B. At the same time, the sowing power of the sowing machine E is taken from the suppression wheel 11 by linking them through a chain 34 and a sprocket wheel 35, and the connecting rod 4 of the parallel link mechanism 1 is connected to a tiller or the like (not shown). It is made to follow.

In this way, the groove-making swash plate 21 and the groove-making rotary disk 23 of the disc plow B are such that only the portion below the outer peripheral surface of the rotary ruler wheel 26 rolls on the ground surface. It digs into the ground, that is, the groove-making rotary disk 23 cuts the soil vertically to a predetermined depth, and at the same time, the groove-making slant plate 21 digs diagonally to a predetermined depth. It is possible to create a groove of a predetermined depth with one side vertical and the other side sloped.

The depth of this groove can be determined by preparing and exchanging a plurality of rotary ruler wheels 26 with different outer diameters, and the width of the groove can be determined by preparing and exchanging a plurality of groove making swash plates 21 with different inclination angles. This allows for easy adjustment.

Once the trench is made in this manner, seeds are immediately sown into the trench by the sowing machine E, and then the soil is covered with soil by the soil-covering plate C, and then the damping action by the pressing wheel 11 is performed.

Incidentally, the disc plow B according to the present invention can also be attached to a fertilizer applicator F to create a groove for fertilizing, as shown in FIG.

1. Effects of the invention As mentioned above, the disc plow of the invention has the following effects.

- Since both the groove-making rotary disk and the rotary ruler ring rotate in a vertical position, they can be rotated smoothly and the depth can be precisely regulated.

■ At the same time, a single vertical groove-making rotary disk rolls vertically to cut the soil, and at the same time, the lower and front upper parts of the semicircular groove-making slant plate, which form a conical surface, sink into the soil without rotating. This creates a groove with one side perpendicular and the other side slanted, and this groove is created in such a way that the groove-making rotary disk and the rear side of the groove-making slanted plate are perpendicular to each other and parallel to each other. Since it maintains its condition, it is prevented from collapsing, and it is possible to reliably create grooves with this shape, and the bottom of the groove does not become convex as in the case of conventional methods. It will not collapse, thus making it possible to sow exactly in the center of the furrow.

■ Groove width can be adjusted by replacing the groove making swash plate.

■ The depth of the groove can be adjusted by replacing the rotating ruler ring, and the replacement can be easily performed by removing the nut from the male threaded portion of the rotating shaft.

■ Easy to assemble and disassemble.

[Brief explanation of the drawing]

Figures 1 and 2 are a side view and a plan view of a seeding machine equipped with a disc plow according to the present invention, Figures 3 and 4.5.6.7 are a partially cutaway front view and side view of the disc plow, A plan view, a bottom view, an exploded front view, and FIG. 8 are side views showing an example of use when attached to a fertilizer applicator. B...Disc plow, 14...Mounting rod, 15...Bracket, 16...Bearing, 17...Male thread part, 18... ...Tsuba,
19... In hole, 20... Rotating shaft, 21
... Groove swash plate, 22 ... Shaft fitted prematurely, 2
3...grooving rotary disk, 24...side plate,
25... Shaft fitted prematurely, 26... Rotating ruler shaft, 27... Nut, 8... Bolt,
29...Pin.

Claims (1)

[Scope of utility model registration request] A cylindrical bearing 16 has a mounting rod 14 fixed upright on the upper side and a bracket 15 fixed on the lower side, and has a male threaded part 17 at one end, a collar 18 in the middle, and a pin hole 19 at the other end. A rotary shaft 20 formed in a hole, a groove forming slanting plate 21 which is semicircular and has a center portion and an upper rear portion that are substantially vertical, but an upper front portion and a lower portion that are inclined from the center portion to form a conical surface;
A perfectly circular vertical groove-making rotary disk 23 with a shaft-fitting die 22 in the center, and a drum shape having a smaller outer diameter than this groove-making rotary disk 23 and having one end open and the other end closed with a side plate 24. A rotating ruler ring 26 is provided in the center of the side plate 24 with a shaft fitting 25, and the rotating shaft 20 is inserted into the bearing 16 and a pin 29 is inserted into the pin hole 19, so that the rotating shaft 20 is supported on the bearing. 16 horizontally so as to be rotatable, and the groove-making rotary disk 2
3, prematurely fitted shaft 22 and prematurely fitted shaft 2 of the rotating ruler wheel 26
5 to the rotating shaft 20 and the male threaded portion 17 of the rotating shaft 20 is inserted.
The groove-making rotary disk 23 and the side plate 24 of the rotary ruler ring 26 are connected to the collar 18 of the rotary shaft 20 and the nut 27 by screwing together the nut 27.
The groove-making rotary disk 23 and the rotary ruler ring 26 are fixed perpendicularly to the rotating shaft 20 by being held between
8, the lower peripheral edge of this groove-making swash plate 21 is exposed to a position close to the lower periphery of the groove-making rotary disk 23, and these groove-making swash plates 21
A space is formed between the groove-making rotary disk 23 and the lower side portion forming the conical surface of the groove-making swash plate 21 and the front upper part thereof, the lower side and the front upper surface being closed. disc plow.