JPH089A - Working machine for tilling - Google Patents

Abstract

PURPOSE:To improve tilling operation speed from 0.3-0.7m/second to about 1.2-1.5m/second in coarse plowing operation of a paddy field by a rotary working machine for tilling of a conventional forced driving type. CONSTITUTION:The angle of a bent part of a tilling pawl is made <= about 45 degrees and a working machine for tilling is drawn without driving a tilling pawl shaft planted with the tilting pawl so that soil can be tilled. A tilling pitch is reduced so as to facilitate tilling operation even in the case of a high- speed drawing tractor. A great number of tilling pawls can be attached to the same plate on the tilling pawl shaft so that a trochoid curve drawn by the tips of the tilling pawls will not stand and no tilting trace is left. The tilling pawls are arranged at a fixed pitch on the tilling pawl shaft so that the right and left tilling pawls are unsymmetrically driven in soil and thrust in soil by empty weight of the working machine for tilling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rotary tilling work machine attached to a work machine mounting device of a tractor.

[0002]

2. Description of the Related Art Conventionally, a technique related to a rotary tiller is known. For example, Jitsuko Sho 19
It is like the technique described in Japanese Patent Publication No. 201-201 or Japanese Utility Model Publication No. 59-21808.

[0003]

In the case of the conventional forced drive type rotary tiller, the speed of tilling is as follows.
It was 0.3 to 0.7 m / sec in the uplifting work of paddy fields. The present invention is intended to improve the tilling work speed of a rotary tiller to about 1.2 to 1.5 m / sec. Therefore, in the conventional forced drive type, the driving of the plowing claw itself may serve as a brake, so the drive is abolished and a towed rotary tiller is used. With the towed type, even if the speed of the tractor increases, the tractor can follow, and the plunging of the plowing pawl does not serve as a brake. The conventional rotary tiller was a drive type in which the tiller shaft was forcibly driven by the driving force of the engine mounted on the tractor to drive the tiller into the soil. However, in the case of a drive-type rotary tiller, when high-speed tillage is performed,
There was a problem that the tilling pitch became rough and the trochoid curve, which is the rotation locus of the tip of the tilling claw, stood up, and the residual tillage was likely to remain. Although the speed of work on rice transplanters etc. becomes faster, there was a problem that the agricultural work could not be performed in a short time because the work speed of the rotary tiller was slow, so this rotary tiller It is configured so that the working speed is increased and no residual tillage occurs. In order to achieve the above-mentioned object, the present invention enables high-speed plowing by making the plowing implement a towed type and a driven type. As a result, the size of the clod becomes uniform, the inversion accuracy of the clod is improved, and the biting pitch of the tilling claw can be reduced. In addition, the setting of the tilling speed is now freely possible, weeds are not entangled in the tilling claw holder, and the reaction force of the tilling claw can be dispersed.

Further, in the case of a forced drive type rotary tiller, when high speed tilling is performed, a large noise is generated from a gear box portion which is a driving portion of a tiller claw, and this noise is avoided. Therefore, a speed-up collar is interposed between the support shafts of the bevel gear.

[0005]

According to a first aspect of the present invention, in the rotary tiller, the angle of the bending portion of the tilling pawl is set to about 45 degrees or less, and the tilling pawl shaft in which the tilling pawl is planted is not driven. The soil can be tilled by pulling the tiller.

According to a second aspect of the present invention, even when the speed of the towed tractor is high, the plowing pitch is made small so that the plowing work can be performed, and the trochoid curve drawn by the tip of the plowing claw does not stand, and A large number of plowing pawls can be mounted on the same surface of the plowing pawl shaft so that no residual plowing remains.

In the third aspect, the left and right tillage claws are asymmetrically driven into the soil, and the weight of the tiller is used,
In order to bite into the soil, the plow claws on the plow shaft are arranged at a constant pitch.

According to a fourth aspect of the present invention, in the drive type rotary tiller, a speed increasing collar 8 is provided between the input shaft 10 and the power transmission shaft 11 arranged in the bevel gear box 12 in order to prevent noise from being generated. And the braking body 9 is interposed.

[0009]

Next, the operation will be described. According to claim 1, the angle of the bent portion of the tilling claw is set to about 45 degrees or less, and the soil can be tilled by pulling the tilling implement without driving the tilling claw shaft in which the tilling claw is planted. Therefore, the paddy field can be cultivated and ploughed by high-speed towing by a tractor, and even in that case, the plowing claws can be smoothly bited without causing resistance to bite.

According to the second aspect of the present invention, the number of plowing pawls is increased to 64 so that the plowing work can be performed even when the speed of the tractor to be pulled is high. In order to prevent the trochoidal curve drawn from standing and to prevent residual tillage from remaining, it is possible to attach multiple plowing pawls on the same surface of the plowing pawl shaft, and between the disc-shaped holder and holder cover, Since the tillage claws were attached, a towed rotary tiller was able to be constructed, and high-speed tillage became possible.

In the third aspect, the left and right plowing pawls are asymmetrically driven into the soil, and the plowing pawls on the plowing pawl shaft are arranged at a constant pitch so as to bite into the soil due to the weight of the tilling implement. Therefore, it was possible to use not a forced drive but a towed rotary tiller, and the left and right drives were unbalanced, further improving the biting performance.

According to a fourth aspect of the present invention, in the drive-type rotary tilling work machine, the speed increasing collar 8 is provided to prevent the generation of noise.
Since it is installed, it is possible to eliminate the noise generated in the bevel gear gearbox 12 and the bevel gears 13 and 14 when the forced drive type rotary tiller is cultivated at high speed.

[0013]

EXAMPLES Next, examples will be described. FIG. 1 is a side view of a state in which the towed rotary tiller implement of the present invention is provided with a nata claw 1 for towing and plowing, and FIG. Fig. 3, Fig. 3 is a development view showing a planting arrangement position of the nata claw 1, Fig. 4 is a side view showing the arrangement of the nata claw 1, and Fig. 5 is a side view showing a state where the ordinary claw 2 is planted on the tilling claw shaft 3. FIG. 6 is a side view showing a state where the nata claw 1 is planted on the tilling claw shaft 3, FIG. 7 is a front view showing a state where the ordinary claw 2 is planted on the tilling claw shaft 3, and FIG. 1 is a front view showing a state where the claw 1 is implanted, FIG. 9 is a side view showing an angle of a bent portion of the nata claw 1, and FIG.
0 is also a plan view showing the angle of the bent portion of the nata claw 1, FIG.
1 is a side view showing an angle of a bent portion of a normal nail 2. FIG.

FIG. 12 is a plan view showing the angle of the bent portion of the normal claw 2, FIG. 13 is a side view of the nata claw holder 4 fixed to the tilling claw shaft 3, and FIG. 14 is a rear view of the same claw claw holder 4. FIG. 15 is a side view of the nata claw holder cover 5, FIG.
6 is a rear view of the same claw holder cover 5, FIG. 17 is a side view of the normal claw holder 6, and FIG. 18 is a normal claw holder 6
Rear view, FIG. 19 is a side view of the normal nail holder cover 7,
20 is a rear view of the normal claw holder cover 7, FIG. 21 is a plan sectional view showing a drive portion of a forcibly driven rotary tiller, and FIG. 22 is a sectional view showing a relational arrangement of the speed increasing collar 8 and the braking body 9. is there.

FIG. 1 shows a locus of a trochoidal curve in a cultivated state of a towed rotary cultivator in which a nata 1 is planted. In the case of the forced drive type, the driving force of the engine drives the nata claws into the soil to make them bite, but in the case of the tow type, the nata claws 1 driven and rotated by the traction force rotate the rotary tiller. The weight of the work machine cuts into the soil. Therefore, in the case of the forced drive, the loose claws do not bite smoothly, resulting in running resistance of the tractor. In the present invention, in order to eliminate this inconvenience, the angle of the bent portion of the biting portion of the ratchet claw 1 is made smaller than that in the case of forced drive, and is set to an angle smaller than about 45 degrees.

By thus setting the angle of the bent portion to 45 degrees or less, the biting of the nata claw 1 and the inversion of the cultivated soil are made smooth. In FIGS. 2, 3 and 4,
The arrangement | positioning of the nata nail 1 planted on the tillage nail shaft 3 is shown. Sixty-four nata claws 1 are planted, but these 64 nata claws 1 are arranged as shown in FIGS. 3 and 4 so as to bite one after another without difficulty in order. Plow shaft 3
9 sets of nata claw holder covers 5 and ordinary claw holders 6 are arranged on the upper part, and the nata claw holder covers 5 on the left and right ends are configured to implant four nata claws 1 only on the inside. are doing. The nata claw holders 4 arranged in the positions between the other parts are capable of implanting four nata claws 1 on each of the left and right sides. A total of 64 nata claws 1 are arranged.

The 64 claws are the same as the nata claws 1 arranged in the nine sets of nata claw holders 4 shown in FIG.
60/64 = 5.625 degrees are shifted and arranged in order. However, instead of striking with, the striking is performed in the order of so that the striking with 90 degrees is completed. Further, the implantation is repeated four times in the same order, and the implantation of 360 degrees is finally completed. Further, the order of this driving is not such that the left and right are balanced and driven in order like the conventional forced driving method, but the order in which the left and right balance is not taken into consideration.

That is, and are driven with a slight gap, then with a slight gap, and then with a slight gap. This is an imbalance. For balancing, and should be driven simultaneously, and at the same time, and at the same time, and at the same time, but not so configured.

Regarding the balance between the left and right tillage pawl shafts, the balance between the left and right tillage pawl shafts is required in the case of a forcibly driven rotary tiller work machine, but in the case of a towed rotary tiller work machine. Does not need to be balanced on the left and right, but rather, the left and right ambassals are better able to bite the soil into the soil. In the present invention, as shown in the drawing, the left and right imbalances are intentionally set so that the tilling nail easily bites into the soil.

FIGS. 5 and 6 show a case where the normal claw 2 is planted and a case where the nata claw 1 is planted.
Further, FIG. 7 shows a rear view of the state in which the normal claw 2 is implanted, and FIG. 8 shows a rear view of the case in which the nata claw 1 is implanted.

In FIG. 9 and FIG. 10, the angle a of the bent portion of the ratchet 1 is shown. In the case of the conventional forced rotation type, the angle a in FIG. 9 was set to about 60 degrees. The angle a is a side view of a portion of the nata claw 1 bent in the direction of the plow claw shaft 3 with respect to an extension line radially extending from the center of the plow claw shaft 3 to the outer circumference of the nata claw 1. How many angles do you make? 9 and 1
0 is an angle formed by a line connecting the edge 1a at the tip of the nata claw 1 and the center of the tillage claw shaft 3. This angle is an angle that is a major factor in driving the nata claw 1. At the bending start line PP, the nata claw 1 itself is
This is the angle formed by the edge 1a at the tip of the bent portion, which has started bending in the direction of the tillage claw shaft 3. The edge 1a coincides with the entire angle of the bent portion 1b, and the front surface of the bent portion 1b from the bending start line P-P to the edge 1a has the same angle a. This angle a is about 45 degrees or less.

The reason why the angle of the bent portion 1b is set to about 45 degrees or less is that the traction type rotary tiller is an angle at which the tilling claws bite into the soil. Specifically, if it is smaller than about 45 degrees, the biting performance is not affected. Conventionally, since the rotary tiller is a forced drive system, if the angle of the bent portion is not about 60 degrees, there is a risk that the tiller itself will bite into the soil under its own weight and become in a braking state. Therefore, in the case of the forced drive system,
The angle of the bent portion could not be set to 60 degrees or less.

11 and 12 show the angle formed by the bent portion 2b in the case of the normal claw 2. In this case, all the surfaces of the bent portion 2b do not have the same angle but an angle that gradually changes from 36 degrees 31 minutes to 37 degrees 33 minutes. However, even in the case of the normal nail 2, the angle of the bent portion 2b is about 45 degrees or less.

13 and 14, the structure of the ratchet claw holder 4 is disclosed. The nata claw holder 4 is formed in a disc shape, and is fixed to the cultivating claw shaft 3 by welding. The natta claw holder 4 is provided with a base fitting groove 4a into which the base of the natta claw 1 is fitted, and the base fitting groove 4 is provided.
A bolt insertion hole 4b is provided inside a. 15 and 16, the nata claw holder cover 5 is shown. A bolt head insertion hole 5a into which the head of the bolt is inserted is provided in the nata claw holder cover 5. 17 and 18 show a normal claw holder 6, which is also provided with a base fitting groove 6a and a bolt insertion hole 6b. 19 and 20, a normal claw holder cover 7 is disclosed, and a bolt head fitting hole 7a is formed in the normal claw holder cover 7.

FIG. 21 is a plan sectional view showing the drive portion of the forcible drive type rotary tiller, and FIG. 22 is a sectional view showing the relational arrangement of the speed increasing collar 8 and the braking body 9. 21 and 22
The rotary cultivator shown in is a forced drive type. Power is transmitted from the PTO shaft of the tractor into the bevel gear box 12 via the input shaft 10, and the bevel gears 13 and 14 are transmitted.
Via the power transmission shaft 11 in the main beam 17, via the chain case 16, the tillage claw shaft 15 is driven.

When the forcible drive type rotary tiller is used for high speed tilling, the meshing backlash portions of the bevel gears 13 and 14 generate noise and noise every time they are joined and separated. At high speeds, there is considerable noise. In the present invention, in order to avoid the noise caused by the hash lash in the bevel gears 13 and 14, the reduction ratio of the bevel gears 13 and 14 such that a rotation difference occurs between the input shaft 10 and the power transmission shaft 11. As an example, the speed increasing collar 8 is provided on the input shaft 10 and the braking body 9 is provided on the power transmission shaft 11 so that the two members are always in frictional contact with each other at an angle of 90 degrees. As a result, a braking force is generated between the input shaft 10 and the power transmission shaft 11 to avoid noise due to backlash.

[0027]

Since the present invention is constructed as described above, it has the following effects. According to claim 1, the angle of the bending portion of the tilling claw is set to about 45 degrees or less, and the soil can be tilled by pulling the tilling implement without driving the tilling nail shaft in which the tilling nail is planted. Therefore, it is possible to cultivate and cultivate the paddy field by high-speed towing by the tractor, and even in that case, the plowing claw can be smoothly bited without causing resistance to bite.

Even if the speed of the tractor to be towed is high, the number of plowing pawls is increased to 64 to reduce the plowing pitch and the tip of the plowing pawl is increased even if the speed of the tractor to be towed is high. In order to prevent the trochoidal curve drawn by and not to leave residual tillage, it is possible to mount multiple plowing pawls on the same surface of the plowing pawl shaft, and between the disc-shaped holder and the holder cover. Since the cultivating claws were attached, it was possible to construct a towed rotary cultivator, which enabled high-speed cultivating.

According to claim 3, the left and right plowing pawls are asymmetrically driven into the soil, and the plowing pawls on the plowing pawl shaft are arranged at a constant pitch so as to bite into the soil by the weight of the tilling implement. Therefore, it was possible to use not a forced drive but a towed rotary tiller, and the left and right drives were unbalanced, which further improved the bite performance.

In the drive type rotary tiller according to the present invention, the speed-increasing collar 8 is provided in order to prevent the generation of noise, so that the forced drive type rotary tiller is operated at high speed. The noise generated in the bevel gear gearbox 12 and the bevel gears 13 and 14 can be eliminated.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a tongue-type rotary tiller working machine according to the present invention is additionally equipped with a ratchet claw 1 and towed and tilled.

FIG. 2 is a front view of a state in which the nata claw 1 is planted on the tilling claw shaft 3.

FIG. 3 is a development view showing a planting arrangement position of a nata claw 1.

FIG. 4 is a side view showing the arrangement of the nata claws 1.

FIG. 5 is a side view showing a state in which the ordinary nail 2 is planted on the tilling nail shaft 3.

FIG. 6 is a side view showing a state in which the nata claw 1 is planted on the cultivating claw shaft 3.

FIG. 7 is a front view of a state in which the ordinary nail 2 is planted on the tilling nail shaft 3.

FIG. 8 is a front view of a state in which the nata claw 1 is planted on the tiller claw shaft 3.

9 is a side view showing an angle of a bent portion of the nata claw 1. FIG.

FIG. 10 is a plan view showing the angle of the bent portion of the ratchet 1.

FIG. 11 is a side view showing the angle of the bent portion of the normal pawl 2.

FIG. 12 is a plan view showing the angle of the bent portion of the normal pawl 2 as well.

FIG. 13 is a side view of the nata claw holder 4 fixed to the cultivating claw shaft 3.

FIG. 14 is a rear view of the same claw holder 4.

FIG. 15 is a side view of the nata claw holder cover 5.

FIG. 16 is a rear view of the nata claw holder cover 5.

FIG. 17 is a side view of the normal claw holder 6.

FIG. 18 is a rear view of the normal claw holder 6.

FIG. 19 is a side view of the normal claw holder cover 7.

FIG. 20 is a rear view of the normal claw holder cover 7.

FIG. 21 is a plan cross-sectional view showing a drive unit of a forced drive type rotary tiller.

FIG. 22 is a sectional view showing a relational arrangement of the speed increasing collar 8 and the braking body 9.

[Explanation of symbols]

 1 Nata Claw 2 Normal Claw 3 Tillage Claw Shaft 4 Nata Claw Holder 5 Nata Claw Holder Cover 6 Normal Claw Holder 7 Normal Claw Holder Cover 8 Acceleration Collar 9 Braking Body

Claims (4)

[Claims] 1. A rotary tiller, wherein the angle of the bent portion of the tiller is set to about 45 degrees or less, and the tiller is pulled without driving the tiller shaft in which the tiller is planted. A tilling machine characterized by being able to cultivate soil. 2. The rotary tiller according to claim 1, wherein the speed of the towed tractor is high,
In order to enable plowing work, the plowing pitch is made small, so that the trochoidal curve drawn by the tip of the plowing claw does not stand, and there is no residual plowing, on the same surface of the plowing claw shaft,
A tilling machine characterized by being able to attach a large number of tillers. 3. The rotary tiller according to claim 1, wherein the left and right tillage claws are asymmetrically driven into the soil, and are bited into the soil by the weight of the tiller.
A tillage implement characterized by arranging tillers on a tiller shaft at a constant pitch. 4. A bevel gear box 12 for preventing generation of noise in a drive-type rotary tiller.
A tillage implement characterized in that a speed increasing collar 8 and a braking body 9 are interposed between an input shaft 10 and a power transmission shaft 11 arranged inside.