JPS6224407Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a tiller with a spring for removing dust from a tiller rotor.

The inventor of this invention curved the tilling knife into a shape that made it easy to drive into the soil, and provided an inverting plate on the curved part to invert the tilling soil and make it easier to perform deep tilling work even in hard clay fields. For this purpose, a mounting hole 2 is bored at the rear end of the straight sword base 1 made of banded iron, and a curved section 3 is formed by curving the front part of the sword base 1 inward at an almost right angle. The blade is further bent at an almost right angle in the direction of rotation b of the cultivator to form a tip portion 4, and on the inner edge of the curved portion 3 is a spoon curved in an approximately crescent shape along the curved portion 3. shaped reversal plate 5
We have developed a tilling knife that is used for a tilling rotor that is integrated with a tilling rotor.

This makes it easier to drive each tilling knife into the soil, and also allows each tilling knife to have a relatively wide tilling width B.
Furthermore, the turning plate 5 prevents entanglement of grass, straw, etc., and the turning performance of tilled soil is also improved, making it possible to carry out deep tilling work extremely easily even in hard clay fields. Summer. In this tilling knife, grass and straw in the soil are also pushed toward the sword base 1 along the reversing plate 5, preventing them from getting entangled. It was difficult to prevent it sufficiently.

This idea can be used in fields with a lot of grass and straw compost, as mentioned above, by installing a garbage collection spring.
The idea was to make deep plowing work easier by reducing the amount of grass and straw that gets entangled with the tip of the knife.

Further, embodiments of this invention shown in the drawings will be described in detail. A indicates a cultivating sword made of banded iron, and the cultivating sword a is, for example, 8 mm in width and height.
Using a band iron with a required length of about 24 mm, a mounting hole 2 is bored at the rear end of the straight sword base 1, and the front part of the sword base 1 is connected to the center line C of a center drive type cultivator. From the curved part 3 that is curved inward at a nearly right angle so as to face the side, the tip part 4 is further bent at a nearly right angle toward the rotational direction b of the cultivating knife a.
form. Note that it is preferable that the tip of the sword tip portion 4 be sharp. A spoon-shaped reversing plate 5, which is curved to follow the curved portion 3 in a substantially crescent shape, is integrally attached to the inner edge of the curved portion 3 by, for example, welding 6. .

In order to detachably attach a dust removal spring 10 to be described later to the curved portion 3, a triangular notch 7 is provided slightly below the middle of the inner edge of the reversing plate 5, and a triangular notch 7 is provided below the triangular notch 7. A stop hole 8 and an upper through hole 9 are bored in the reversing plate 5. Reference numeral 10 designates a dust removal spring, which is made of a steel wire of a required length, with one end of the steel wire serving as a locking protrusion 11 to be inserted into the stopper hole 8 of the reversing plate 5;
It is formed into a U-shaped holding part 12 which is folded back to the back side through a support part 13 bent from its tip toward the through hole 9 of the reversing plate 5, and a penetrating part 14 at the tip thereof.
The spring base 15 is formed by bending along the inner surface of the reversing plate 5 to the lower edge through the through hole 9 of the reversing plate 5, and the sword base 1 is bent from the tip into a dogleg shape.
A flip-up portion 16 is formed so as to protrude slightly obliquely toward the forward movement side. This dust removal spring 10 is detachably attached to the reversing plate 5 of the tiller a. For example, when attaching the spring 10, the flipping part 16, the spring base 15, and the penetrating part 14 are inserted into the through hole from the outer surface of the reversing plate 5. After inserting into the support part 1
3 along the lower part of the outer surface of the reversing plate 5,
The bent part of the U-shaped holding part 12 is made to straddle the triangular notch 7, and the locking protrusion 11 is inserted into the stopper hole 8 of the reversing plate 5 at the end.
You can insert it into , and to remove it,
Just follow the steps in the reverse order above.

Constructed as described above, the dust removal spring 10
The tilling knife a equipped with this is used by being attached to the tilling rotor. Reference numeral 19 indicates a cylindrical shaft at the center of the tilling rotor, and on the outer periphery of the cylindrical shaft 19, an appropriate number of tilling knife attachment fittings 20 are arranged at appropriate intervals, and each tilling force attachment fitting 20 has a phase difference of 120 degrees. They are installed in a radial arrangement. The rear end of the sword base 1 of the cultivating knife a is fitted into each of the above-mentioned mounting fittings 20 and fastened to the mounting fittings 20 with bolts 21 and nuts, and in this way, the tilling rotor of the present invention is installed. It is configured.

Reference numeral 17 schematically shows the lower part of a transmission case provided in the center of the center drive type cultivator.A main drive shaft is supported at the lower end of the transmission case 17 by protruding to both sides of the transmission case 17. The proximal ends of the foil tubes 18 are fitted into the protrusions on both sides and pinned using a conventional method, and the tilling rotors configured as described above are attached to the foil tubes 8 on both sides of the blade base 1 of each tilling claw a. The front curved portion 3 is directed toward the center line c side of the center drive type cultivator, and its cylindrical shaft 19 is fitted into the foil tube 18.Although not shown, the cylindrical shaft 19 is pinned to the foil tube 15, and the center The tilling rotor is connected to protrusions on both sides of a drive main shaft supported at the lower end of a central transmission case of a drive-type tiller.

Next, to explain its operation, when the center drive type cultivator is driven, power is transmitted from each drive shaft on both the left and right sides of the central transmission case 17 to the cylindrical shaft 19 via the foil tube 18, and the tilling rotors on both the left and right sides are rotated. It is rotated in the direction shown by arrow b in FIGS. 2 and 9. Therefore, each cultivating knife a is formed into a curved part 3 in which the front part of the sword base 1 is bent inward, that is, at a substantially right angle in the direction of the center line c of the center drive type cultivator. Since the angle is deviated in the lateral direction, a relatively wide tilling width B (see Figs. 1 and 3) can be obtained for each tilling knife a compared to conventional hatchet claws, thereby making it possible to
The soil is plowed roughly, which helps promote soil weathering. In addition, each cultivation sword a
The tip portion 4 of the blade is bent at a nearly right angle from the curved portion 3 toward the direction of rotation, so that the tip is almost on the circumference, making it possible to drive into the soil smoothly and with a small horsepower. Deep plowing work can now be carried out easily even in hard clay fields. Moreover, a crescent-shaped, spoon-shaped reversing plate 5 is provided on the inner edge of the curved portion 3 of the tilling knife a, and a dust removal spring 10 is attached to this reversing plate 5, and a dust removal spring 10 is installed from the lower end of the spring base 15. Since the pick-up part 16 bent in a dogleg shape is provided so as to protrude slightly diagonally from the lower edge of the inner surface of the reversing plate 5 when the sword base 1 moves forward, it can be used for cultivation work in fields with a lot of garbage such as grass, straw, and compost. When doing so, these debris are not only caught by the lifting part 16 of the dust removal spring 10, but also picked up by the occasional repulsion of the lifting part 16, so that these garbage are not caught by the blade edge of the tiller. Even if there is dirt that tries to get entangled with the cutting edge part 4, the dirt is pushed toward the sword base 1 along the reversing plate 5 and is picked up by the dirt removal spring 10 as the tiller rotates. The blade tip part 4 is thrown out onto the ground surface by the part 16, and there is almost no chance of the tiller getting entangled with the dirt, so even in fields where there is a lot of trash such as grass, straw, and compost, the blade part 4 always bites into the soil. Plowing and inversion crushing of plowed soil with inversion plates is performed well.

In addition, when cultivating a field with little grass, straw, compost, etc., it is possible to work without removing the dust removal spring 10 from each tilling knife a.

According to this invention, not only is each tilling knife a very good at digging into the soil, but the tilling width of each tilling knife a can be expanded, and it is also possible to prevent grass, straw, etc. from getting tangled in the tip part 4. This has the effect of making deep plowing work easier in fields where there is a lot of garbage such as grass, straw, and compost.

[Brief explanation of drawings]

The drawing shows an example of the cultivator according to this invention,
Figure 1 is its plan view, Figure 2 is its front view, Figure 3 is its front view, and Figure 3 is its front view.
The figure is a left side view seen from the left side of Figure 2, Figure 4 is a sectional view taken along line A-A' in Figure 2, and Figure 5 is a left side view of Figure 2.
FIG. 6 is a bottom view of FIG. 1 seen from below, FIG. 7 is a slope view of the dust removal spring, and FIG. 8 is a plan view showing an example of the tilling rotor.
FIG. 9 is an enlarged side view taken along line B-B' in FIG. 8. Code in the drawing 1...Sword base, 2...Mounting hole, 3
...curved part, 4... sword tip part, 5... reversal plate, 7...
... Triangular notch, 8 ... Stop hole, 9 ... Through hole, 10
... Dust removal spring, 11 ... Locking protrusion, 12 ...
U-shaped holding part, 13... Support part, 14... Penetrating part, 15... Spring base, 16... Lifting part, a...
... Cultivating knife, b... Rotating direction of the cultivating knife, c... Center line of center drive type cultivator.

Claims (1)

[Scope of utility model registration request] A mounting hole 2 is bored at the rear end of the straight sword base 1 made of banded iron, and from the curved part 3 where the front part of the sword base 1 is curved inward at a nearly right angle, there is a mounting hole 2 in the direction of rotation b of the sword. The blade is bent at a substantially right angle toward the blade to form a tip portion 4, and on the inner edge of the curved portion 3, a spoon-shaped inversion plate 5, which is approximately crescent-shaped and curved along the curved portion 3, is integrally formed. In the tilling blade of the tilling rotor, a triangular notch 7 is provided slightly below the middle of the inner edge of the reversing plate 5, and a stop hole 8 is provided below the triangular notch 7.
A through-hole 9 is bored in the reversing plate 5 at the top and a locking protrusion 11 for inserting one end of the steel wire into the locking hole 8, and a U-shaped clamping part is folded back to the back side through the triangular notch 7. 12 and is bent from its tip toward the through hole 9 to form a support portion 13, and is bent along the inner surface of the reversing plate 5 to the lower edge through the through hole 9 by the through portion 14 at the tip thereof to form a spring. A dust removal spring 10 is formed by forming a base part 15 and a flipping part 16 which is bent in a dogleg shape from the tip and projects slightly diagonally toward the forward movement side of the sword base part 1, and is detachably attached to the reversing plate 5. A tilling knife with a dust removal spring, which is characterized by being attached.