JPH08214606A - Rotary tillage unit - Google Patents

Abstract

PURPOSE: To provide a rotary tillage unit having a simple structure, capable of dispensing with resistance bars, preventing the occurrence of dashing, attributable to a rotary part on a dry field, etc., by means of straight blades and free from the trapping of mud and foreign materials by placing the straight blades between hatchet tines facing to each other. CONSTITUTION: This rotary tillage unit is obtained by placing a normal tine 26 consisting of a straight blade between a hatchet tine 24 and another hatchet tine 25, both hatchet tines are facing to each other. Further, several sets of the unit are preferably placed within the tillage width, and this works for preventing the falling-off of paint and solves the defects of rusting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cultivator without resistance rods.

[0002]

2. Description of the Related Art Conventionally, a rotary cultivator is attached to the rear of a tractor or a cultivator, and this rotary cultivator is used for cultivating work. This rotary cultivator is composed of a plurality of ratchet claws and resistance rods. However, as one example, in order to increase the traveling speed during the tilling work, one in which a resistance rod composed of a cutting blade is arranged at the front part of the rotary tiller is proposed.

[0003]

A rotary tiller constructed by a plurality of conventional ratchet claws and resistance rods has no problem under dry field conditions, but it will contaminate foreign substances under wet field conditions. There is a drawback to Further, even in the case where a resistance rod made of a cutting blade is provided in the front part of the rotary cultivator, when the distance between the cultivating claw shaft and the cutting blade is large, the mud is sucked in, and due to the foreign matters and the mud sucked in, It has the drawback that the paint on the tillage shaft will also come off and rust.
Therefore, it is an object of the present invention to provide a rotary tiller that does not suck in mud or foreign matters.

[0004]

SUMMARY OF THE INVENTION The present invention provides the following rotary tiller in order to achieve the above objects. That is, it is a rotary cultivating device in which normal claws composed of straight blades are arranged between the nata claws facing each other.

[0005]

[Function] By arranging the normal blades made of straight blades between the facing claws and the facing claws, it is possible to prevent the dashing from the rotary part in the dry field etc. When placed, mud will not be trapped.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. First, a side drive type rotary tiller mounted on a tractor in which a cutting blade is arranged at the front will be described.
In FIG. 5 and FIG. 6, the rotary tiller has a gear box (1) arranged at the center, an input shaft (2) is projected forward from the gear box (1), and a universal joint or a drive shaft is attached to the input shaft (2). Power is transmitted via the PTO shaft of the tractor via the. Project the beams (3) and (3) from the side of the gear box (1) to both sides,
The support plates (4) and (4) are fixedly installed at the midpoints of the beams (3) and (3), and the front ends of the support plates (4) and (4) are provided with pins for pivotally connecting the lower links, The front end of the depth frame (5) is pivotally supported at the rear end, and a support stay (6) is further interposed between the front side portions of the support plates (4) and (4) and the mast (7) so that the top end is attached to the front end of the mast. It constitutes the pivotal part of the link.

An upper part of the chain case (10) and an upper part of the side port (11) are fixed to the outer ends of the beams (3) and (3), and the lower part of the chain case (10) and the side port (1) are fixed.
A tilling claw shaft (12) is horizontally installed between the lower parts of (1), and a large number of tilling claws (13) made of nata claws are radially planted on the tilling claw shaft (12) in a side view. The upper part of the rotation locus (A) of 13) is covered with a tilling cover (20), both sides are covered with side covers (21), and a rear cover (22) is connected to the rear end of the tilling cover (20). The tiller claw shaft (12) is driven by the input shaft (2) through the gear in the gear box (1), the transmission shaft in the beam (3), the sprocket in the chain case (10), and the chain, and the tiller claw shaft (12) is driven. The pawl (13) is rotated so that it can be cultivated.

A plate (14) is fixed to the front side of the upper inner surfaces of the support plates (4) (4), the chain case (10) and the side port (11), and a support rod () is provided at the front end of the plate (14). 15) is laid horizontally and the supporting rod (1
The plate (16) is externally fitted and fixed to the plate 5) so that its position can be adjusted, and the upper part of the cutting blade (17) is fixed to the mounting plate (16). The cutting blade (17) has a straight upper part (17a), and several mounting holes (17b) are vertically formed on the side surface of the cutting blade (17) to be aligned with the mounting holes formed in the mounting plate (16). The height can be adjusted with bolts and pins. And a cutting blade (17)
The lower part (17c) of the
c) is made to face the front part of the rotation locus A of the tilling claw (13) and the tip is floated. That is, when viewed from the side, the lower part (1
7c) is arranged so as to be inserted into the rotation locus (A) near the surface of the ground at the time of plowing, so that the straw on the field surface does not wind around the cutting blade (17), and the lower end of the cutting blade (17) has a plowing claw (1).
It protrudes forward from the rotation locus (A) of 3) and is arranged such that its height is longer (h) than the height of the lower end.

In the above, the lower part of the cutting blade (17) is located at the front rotation locus (A) of the tilling claw (13) of the rotary tiller.
By arranging so as to face the inside, when the plowing work, the plowing claw (13) enters the soil and reaches the lowest end, the soil is cut by the plowing claw (13) and can be inverted. However, the cut soil is pushed by the cutting blade (17) as it is while being rotated rearward to be a propulsive force. That is, the forward speed is increased and the working speed can be increased. When the tilling claw (13) rotates backward and upward from the lowermost end, the cutting blade (17) is not provided, so the cut soil is inverted, stirred and cultivated.

As described above, the conventional one can increase the traveling speed during the tilling work by merely disposing the cutting blade at the front part of the rotary tiller, but it is a problem under the dry condition of the field. Even if it does not exist, there is a disadvantage that foreign matters are taken in under the condition that the field is wet.

The present invention is an improvement of the above points, in which a resistance rod or the like such as a cutting blade is abolished, and a normal blade made of a straight blade is arranged between the nata claw and the nata claw facing each other. is there. In FIG. 1 and FIG. 2, (23) is a tillage claw shaft,
(24) and (25) are nata claws facing each other. The normal claw (26) composed of a straight blade is arranged between the nata claw (24) and the nata claw (25) facing each other. In the above-mentioned thing, there is a straight blade between the nata claws (24) (25) which are separated from each other, which can prevent the mud from entering. Then, the normal claw composed of a straight blade prevents dashing coming from the rotary part in a dry field or the like. Further, the above-mentioned devices are provided in the plowing width several times.

Incidentally, the tillage claw shaft (29) as shown in FIG.
In which the resistance rod (30) is attached to the frame with the attachment bolt metal fittings (32) in front of the rotary tiller covered with the tiller claw (28) and covered with the tiller cover (27),
Since the resistance rod (30) and the tillage claw shaft (29) are separated from each other, mud is sucked into this separated space (31) and at the same time, the tilling claw shaft (29) is caused by the foreign matters and muddy that have been sucked in.
The paint is peeled off and rusted. Therefore, as shown in Fig. 4, the resistance rod (3
0) is formed in a hook shape, and the upper circular arc portion (30a) is fixed to the frame by mounting bolt metal fittings (32) (33) at front and rear. Then, the upright portion (30b) of the resistance rod (30) is brought as close as possible to the tillage shaft (29). Then, the resistance rod (3
0) and the tillage claw shaft (29), there is no gap between them, so that wet soil does not accumulate during this period. The resistance rods are arranged at several places (actually four) within the tilling width. In any case, the present invention is based on a rotary cultivating device in which normal claws composed of straight blades are arranged between nata claws and nata claws facing each other, and the design is arbitrarily changed within the scope of the spirit of the present invention. It is profitable.

[0013]

According to the present invention, since the normal claws composed of straight blades are arranged between the nata claws facing each other and the nata claws, there is a straight blade between the nata claws separated from each other. Therefore, it is possible to prevent the mud from being mixed. In addition, the straight blade can prevent dashing from the rotary part in dry fields. As described above, since the conventional function of the resistance rod can be achieved by the straight blade, the resistance rod can be eliminated and a rotary tiller having a simple device can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view of the device of the present invention seen from the front.

FIG. 2 is an explanatory view seen from a side surface of the same.

FIG. 3 is an explanatory view of a rotary tiller equipped with a resistance rod in front of it.

FIG. 4 is an explanatory diagram of the improved product of the above.

FIG. 5 is a front view of a rotary tiller equipped with a cutting blade.

FIG. 6 is a plan view of the above.

[Explanation of symbols]

 23 Cultivating Claw Shaft 24 Nata Claw 25 Nata Claw 26 Straight Claw Normal Claw

Claims (1)

[Claims] 1. A rotary cultivating device in which a normal claw composed of a straight blade is arranged between the nata claw and the nata claw facing each other.