JP4039496B2 - Tillage rotor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention detachably attaches a side plate having a plurality of blades on the outer peripheral portion to the outer end portion of both tillage rotors attached to the rotating shaft protruding from the lower end of the transmission case of the walking type tiller to the left and right sides, In addition, the present invention relates to a tillage rotor in which left and right side plates are provided to be exchangeable.
[0002]
[Prior art]
Conventionally, there has been known a tillage rotor that is detachably attached to both rotary shafts that protrude from the lower end of the transmission case of the walking type tiller to both the left and right sides, and that has a number of tillage claws attached to the outer periphery of the tillage claws mounting body. Yes. A rotary rotor is attached to the rotary shaft to perform various operations such as tillage, crushed soil, middle tillage, cutting, and cultivation.
[0003]
[Problems to be solved by the invention]
By the way, the conventional tillage rotor uses the same method even when the soil of the field to be worked is hard or soft. For this reason, when the work target soil is soft, such as volcanic ash soil, sandy land, wet field, etc., the tilling nail penetrates deeply into the soil, the tilling rotor tends to sink, and not only the tilling resistance increases, The person had to lift up the aircraft with the handle that he grasped, and had a problem that fatigue would increase. On the other hand, if the soil to be worked is hard, the tilling claws only enter the soil shallowly, the tilling rotor tends to float due to the tilling reaction force, and the operator must work while pressing the aircraft. After all, there was a problem of increased fatigue.
The present invention has been made to solve the above problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is detachably mounted on both rotary shafts projecting from the lower end of the transmission case of the walking type tiller to the left and right sides, and a plurality of tilling claws are attached to the outer periphery of the tilling claws mounting body. In the attached tilling rotor, the side plates having a plurality of blades formed on the outer peripheral portion thereof are detachably provided on the outer end portions of the two tilling rotors so that the left and right side plates can be exchanged. In addition, the blade is characterized in that when it rotates in one direction, it bites into the soil and when it rotates in the other, it rises up against the soil and acts freely.
[0005]
[Action]
With the above-described configuration, when the work target soil is soft, the tillage rotor of the present invention is attached to the left and right side plates so that the left and right side plates are lifted with respect to the soil. It is possible to prevent the tillage rotor from sinking into the ground. In addition, when the work target soil is hard, the left and right side plates are reversed and replaced so that they can be bite into the soil, so that the tillage rotor is lifted by the biting action of the side plates during the work. Is prevented.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
In the figure, reference numeral 1 denotes a tilling rotor that is detachably mounted on a rotating shaft that projects from the lower end of a transmission case of a well-known walking type power tiller, not shown.
This tillage rotor 1 is composed of a pair of left and right tillage claws 5 attached to the outer periphery of the tillage claw attachment body 2 via a number of claw attachment parts 3 and bolts and nuts 4, and in the direction of the arrows. Used to rotate. Since the right and left tilling rotors 1 are symmetrical and have the same configuration, only one of them will be described.
[0007]
A cylindrical rotary shaft mounting portion 6 is provided in the axial direction of the axial center portion of the tilling claw mounting barrel 2 at the inner end of the tilling rotor 1, and the rotary shaft mounting portion 6 is inserted through the rotary shaft. Then, the fixing pin 8 is inserted through the rotating shaft mounting portion 6 and the rotating shaft into the fixing hole 7 drilled from the outer periphery of the tillage claw mounting body 2 in a direction orthogonal to the rotation claw mounting barrel 2. A stopper pin (not shown) is inserted into the tip portion to prevent it from being fixed and fixed.
[0008]
The tillage claw mounting body 3 is a cylinder having a long horizontal length and a hexagonal side surface (cross section). The outer edge of the cylinder has three blades 9a on the outer periphery. The side plate 9 according to the present invention is formed so as to be detachable and can be exchanged by inverting the left and right ones. When the three blades 9a are curved on the side surfaces and rotated to one side, the side surfaces bite into the soil without resistance and bite into the soil, and when rotated to the other side, the side surfaces become resistance and have buoyancy. It is formed so as to lift up with respect to the working soil and can be used by exchanging the left and right ones according to the hardness of the soil in the field to be worked.
[0009]
Further, each corner portion having a hexagonal cross section of the tillage claw mounting body portion 2 has a stepped portion 2a inclined so that the front side inclination is gentle and the rear side inclination becomes tight with respect to the rotation direction (arrow direction). The claw mounting portion 3 is formed on the body surface immediately after the step 2a and is equally distributed and fixed in the length direction and the circumferential direction of the tilling claw mounting body portion 2. When the tillage rotor 1 rotates and works, the stepped portion 2a reduces the amount of tillage that directly contacts the claw mounting portion 3 and the bolt / nut 4 and wears.
[0010]
In this embodiment, the tilling claw mounting body 2 is detachably connected to the left and right by an attaching / detaching means described later, and further, another tilling claw mounting body 2 can be connected and extended. It is possible. Further, the side plate 9 can be attached to and detached from any outer end of the tilling claw mounting body 2 by the same attaching / detaching means.
[0011]
A connecting shaft fitting insertion hole (shaft cylinder) 10 having a hexagonal cross section is provided at the axial center position of the outer end portion of each tillage claw mounting body portion 2, and the connecting side corresponding to the connecting shaft fitting insertion hole 10 is provided. A connecting shaft 11 having a hexagonal cross section projects from a shaft center portion of the inner end portion of the tillage claw mounting body portion 2. In addition, a connecting pin 12 is provided at the outer peripheral position of the coupling claw mounting body 2 on the connecting side so as to project toward the cultivation claw mounting body 2 on the connecting side. A connection pin insertion protrusion 13 is provided at the outer peripheral position of the tillage claw mounting body 2 on the side connected to the connection pin 12.
[0012]
Then, the connecting shaft 11 and the connecting pin 12 of the connecting nail mounting body 2 on the connecting side are inserted through the connecting shaft fitting insertion hole 10 and the connecting pin insertion protrusion 13 of the connecting nail mounting body 2 on the connecting side, A retaining pin 14 is inserted into the distal end portion of the connecting pin 12 to prevent the retaining pin 14 from coming off. Further, the connecting shaft 15 and the connecting shaft 15 inserted into the connecting shaft fitting insertion hole 10 and the connecting pin insertion protrusion 13 of the tillage claw mounting body portion 2 connected to the inner side surface axial center portion and the outer peripheral portion of the side plate 9 are connected. A pin 16 is provided, and is connected to the outer end of the tilling claw mounting body 2 in the same manner as when the tilling claw mounting body 2 is connected.
[0013]
Next, the operation of the tillage rotor according to the present invention configured as described above will be described.
[0014]
The rotary rotor 1 is attached to the rotary shaft protruding from the lower end of the transmission case of the power tiller (not shown) to the left and right sides through the rotary shaft attachment portion 6, the fixing hole 7, and the fixing pin 8, respectively. The operator holds the handle of the tiller and rotates the left and right tillage rotors 1 to advance the body, and at the same time, performs various operations such as tillage, crushed soil, intermediate tillage, cutting, and cultivation.
[0015]
At this time, in the tiller rotor 1, the second rotor is connected to the outer end portion of the first rotor whose inner end portion is attached to the rotating shaft. A side plate 9 is attached to the outer end of the second rotor. The left and right side plates 9 are used by selecting the left and right side plates according to the hardness of the soil of the field to be worked. That is, when the work target soil is soft, such as volcanic ash soil, sandy land, wet field, etc., and the tilling claw 5 penetrates deeply into the soil and the tilling rotor 1 tends to sink, the blades 9a, 9a of the left and right side plates 9 Is attached so as to act freely on the soil, so that the tiller rotor 1 is prevented from sinking during the operation due to the lifting action of the side plate 9.
[0016]
In addition, when the work target soil is hard like dry clay soil and the tilling claw 5 hardly enters the soil only shallowly, and the cultivation rotor 1 is likely to float due to the tilling reaction force of the cultivation claw 5, By attaching the blades 9a, 9a ... of the side plate 9 so as to bite into the soil, the tilling depth of the tillage claw 5 is deepened by the biting action of the side plate 9 during work, and the tilling rotor 1 is It is prevented from floating.
[0017]
The tillage rotor 1 can also be operated by removing the second rotor from the first rotor and attaching the side plate 9 to the outer end of the first rotor. Further, the side plate 9 is removed from the second rotor, a third rotor is attached to the outer end portion of the second rotor and extended, and the side plate is attached to the outer end portion of the third rotor. It is also possible to work with 9 attached. It is also possible to remove the side plate 9 and work only with the tilling rotor. The detachment operation of the tilling rotor 1 and the side plate 9 can be easily performed by inserting / removing the retaining pin 14 inserted through the distal ends of the connecting pins 12, 15.
[0018]
The tiller rotor 2 can perform stable and smooth work in substantially the same state by the action of the side plate 9 even when the soil of the field to be worked is hard or soft. Therefore, an operator who works with the handle of the cultivator does not need to press down the handle or lift it up like before, and the fatigue is reduced. Further, since the side plate 9 is mounted, the straightness of the airframe is good, the work is easy to perform, and the work accuracy can be improved.
[0019]
【The invention's effect】
As described above, according to the tillage rotor of the present invention, the side plates having a plurality of blades formed on the outer peripheral portion thereof are detachably provided at the outer end portions of the left and right tillage rotors. The right and left blades can be exchanged, and the blade is designed to bite into the soil when rotated to one side, and lifts against the soil when rotated to the other side. If the target soil is soft, attach the left and right side plates to the soil so that they will act freely, and the tiller rotor will sink due to the biting of the tilling nails during work due to the side plate's lifting action Is prevented. Accordingly, the tillage resistance of the tillage rotor is reduced, and the operator who works by holding the handle of the tiller does not need to lift the body and work slightly, thereby reducing fatigue.
[0020]
In addition, when the work target soil is hard, by attaching the left and right side plates so that they can bite into the soil, it is possible to prevent the tillage rotor from floating due to the biting action of the side plates during work. , Work with the proper depth is done by the tilling nail. Therefore, an operator who works by holding the handle of the tiller does not need to hold down the machine body to work, and fatigue is reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a one-side tillage rotor according to the present invention.
FIG. 2 is a plan view of the tillage rotor.
FIG. 3 is a bottom view of the tillage rotor.
FIG. 4 is a side view from the side plate side of the tillage rotor.
FIG. 5 is a side view of the tillage rotor from the rotating shaft mounting side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cultivation rotor 2 Cultivation claw attachment trunk | drum 2a Step part 3 Claw attachment part 4 Bolt / nut 5 Cultivation claw 6 Rotating shaft attachment part 7 Fixing hole 8 Fixing pin 9 Side plate 9a Blade 10 Connecting shaft fitting insertion hole (shaft cylinder)
11, 15 Connecting shaft 12, 16 Connecting pin 13 Connecting pin insertion protrusion 14 Retaining pin

Claims (1)

In a tillage rotor that is detachably mounted on both rotary shafts that protrude from the lower end of the transmission case of the walking type tiller to the left and right sides, and that has a number of tillage claws attached to the outer periphery of the tillage claws mounting body,
A side plate having a plurality of blades formed on the outer peripheral portion thereof is detachably provided at the outer ends of the two tillage rotors, and the left and right sides of the side plates can be reversed and exchanged. A tilling rotor characterized in that when it rotates, it is configured to bite into the soil, and when it rotates to the other, it floats up against the soil.

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