JPH09298902A - Partly inversely operable rotary-tilling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partly inversely rotatable rotary-tilting apparatus, provided with a wing hiller behind the rotational loci of inversely rotating tilling tines, accordingly enabling the prevention of the trouble of the accumulation of tilted soil in front of the wing hiller, capable of efficiently performing ridging work without increasing pulling resistance and improved in straight running performance. SOLUTION: A partly inversely rotatable rotary tilting apparatus R is placed in a rear part of a power tiller, and a wing hiller B is placed behind the rotational loci of inversely rotating tines 8. Further, the mounting angle of the wing hiller B is preferably made larger than the mounting angle of a tail wheel 3 in forward inclination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tiller mounted on the rear part of a partially reversing rotary tiller as a working machine for a walking tiller, which is equipped with a partially reversing rotary tiller.

[0002]

2. Description of the Related Art Conventionally, it has been known that a walk-type cultivator is equipped with a partially reversing rotary cultivator as a working machine. For example, Japanese Patent Laid-Open No. 6-3433
No. 10, JP-A-6-303801, JP-A-6-197604, JP-A-7-79601, and Japanese Patent Publication No. 46-39041. Further, as a technique for mounting a soil cultivator on a partially reversing rotary tiller, there is a technique such as Japanese Patent Application No. 7-297671 which is a prior application of the same applicant.

[0003]

The problems to be solved by the present invention are as follows. Conventionally, when attaching a cultivator to a cultivator equipped with a partially reversing rotary cultivator, when attaching the tip of the cultivator to the rear part of the reversing cultivating claw, the boundary line between the reverse cultivating claw and the normal cultivating claw is There are three types of cases where the tip of the cultivator is attached to the part and where the tip of the cultivator is attached to the rear part of the forward-tiling claw, but in the present invention, the tip of the cultivator is reversed. By mounting it on the rear part of the rotating part of the cultivator, it is possible to avoid the increase in traction resistance generated by the cultivator by utilizing the fact that there is little accumulated tillage soil in front of the cultivator and to perform the cultivating work efficiently. To do.

Further, as a prior application, a technique for arranging a cultivator and a single tail wheel in order at the rear part of a rotary tiller mounted on the rear part of a tiller existed as in Japanese Patent Application No. 7-297671. However, the mounting angle of the cultivator and the mounting angle of the single tail wheel were arranged in parallel. The present invention
By changing the mounting angle between the cultivator and the single tail wheel, the resistance of the cultivator prevents the straightness of the fuselage from decreasing.

[0005]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. According to the first aspect of the present invention, in the configuration in which the partially reversing rotary tiller R is mounted on the rear part of the tiller, the tiller B is arranged at the rear part of the rotation locus of the reversing tiller claw 8.

According to a second aspect of the present invention, in the structure in which the partially reversing rotary tiller R is attached to the rear part of the tiller, the cultivator B is arranged at the rear part of the rotation locus of the reverse cultivating claw 8, and the cultivator B is attached. The angle is set such that the tail wheel 3 is tilted forward more than the mounting angle of the tail wheel 3.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. FIG. 1 is an overall side view showing the configuration of the present invention in which a cultivator B and a single tail wheel 3 are attached to the rear part of the partially reversing rotary tiller R, and FIG. 2 is an overall plan view showing the configuration of the present invention.
6 is a side view of a drive portion of the traveling drive device and the partially reversing rotary tiller, FIG. 4 is a rear sectional view of the traveling drive device, FIG. 5 is a rear sectional view of a drive device of the partially reversing rotary tiller, and FIG.
Is a rear view of a part of the partially reversing rotary tiller, cultivator B and the single tail wheel 3, and FIG. 7 is an enlarged side view showing the positional relationship between the cultivator B and the single tail wheel 3 in the tilling state by the partially reversing rotary tiller R. FIG. 8 is a rear view showing a state in which the reverse cultivating claw 8 and the normal cultivating claw 7 overlap each other.

The overall construction of the cultivator according to the present invention will be described with reference to FIGS. 1 and 2. The engine frame F projects forward from the traveling mission case M, and the engine frame F
The engine E is mounted and fixed on the above. A V-belt 14 is wound between the output shaft of the engine E and the pulley 20 of the input shaft 21 of the traveling mission case M. A belt tension type main clutch mechanism 16 for transmitting power by tensioning / relaxing the V-belt 14 is provided as a tension pulley mechanism.

A belt cover 15 for covering the V-belt 14 and the belt tension main clutch mechanism 16 is provided. The operation handle 1 is projected rearward from the upper part of the decorative cover 19 on the side of the belt cover 15. The operation handle 1 is composed of two left and right rectangular handles, and a main gear shift lever 10 and a tilling gear shift lever 11 are provided between the left and right handles in a protruding manner.

Further, a partial reversing rotary tiller R is arranged below the operating handle 1. The partial reverse rotation rotary tiller R includes a tillage mission case A, a forward tillage claw 7, a reverse tillage claw 8, a tiller B and a single tail wheel 3.
A tail wheel height adjusting device 6 for adjusting the vertical position of the single tail wheel 3,
It is composed of a tilling cover 9 and the like.

The tilling mission case A is integrally fixed so as to close the rear opening of the traveling mission case M, and power is supplied from the sprocket 22 inside the traveling mission case M by one chain 23. Has been transmitted. The cultivating mission case A constitutes a center drive type partial reversing rotary cultivating device R, and four reverse cultivating claws 8 are arranged at the left and right nearest parts of the central cultivating mission case A, two left and right in total. Has been done.

Since the reversing tilling pawl 8 is of the center drive type, it is necessary to till the soil under the tilling mission case A, and the reversing tilling pawl shaft 24 is the forward rotation tilling pawl shaft 5 in order to achieve the cross center system. With respect to the outer side, it is arranged so as to be inclined so that the outer side is lowered, and is rotated. Axles 26L and 26R are projected to the left and right from the central traveling mission case M, and the left and right wheels 13L are attached to the axles 26L and 26R.
・ 13R is attached.

A main clutch lever 18 for operating the belt tension type main clutch mechanism 16 and a finger clutch lever 4 are arranged at the rear end of the left operation handle 1. Further, a pinching prevention lever 2 is arranged so as to be installed between the left and right operation handles 1, and a throttle lever 27 is provided at the rear end of the right operation handle 1. The left and right operation handles 1 are connected and reinforced by a left and right handle connecting rod 28.

Next, referring to FIGS. 3, 4, and 5, the traveling mission case M, the cultivating mission case A, and their power transmission systems will be described. As shown in FIG. 3, an opening is provided on the rear surface of the traveling mission case M, and the cultivating mission case A is communicatively connected so as to close the opening. The chain 23 is configured to pass through the opening in the direction from the traveling mission case M to the tilling mission case A.

Inside the traveling mission case M shown in FIG. 4, in addition to the input shaft 21, a shift sliding gear shaft 30, a cultivating shift shaft 29, a parking brake shaft 31, and a counter shaft 32.
Is arranged. The power from the engine E is transmitted to the pulley 20 of the input shaft 21. On the input shaft 21, integral type loose fitting gears 39, 40 and 41 are loosely fitted. The fixed gears 38 and 42 are also fixed. The fixed gear 38
Engages with a fixed gear 37 on the variable speed sliding gear shaft 30 and transmits the rotation of the input shaft 21 to the variable speed sliding gear shaft 30. Sliding gears 36 and 35 are selectively slidable right and left on the speed-changing sliding gear shaft 30 while being engaged with the speed-changing sliding gear shaft 30.

When the sliding gear 36 slides to the left, it meshes with the fixed gear 43 on the parking brake shaft 31 to provide a reverse speed. Further, the sliding gear 36 is slid to the right beyond the neutral position of the center and meshes with the integral free-fitting gear 40 on the input shaft 21. Since the power is transmitted to the parking brake shaft 31 by meshing with the fixed gear 43 above 31, the first forward speed is obtained. Then, the sliding gear 35 slides to the left side to mesh with the fixed gear 44 on the counter shaft 32, and the third forward speed is obtained. Further, the sliding gear 35 crosses over the neutral position of the center and meshes with the right side integral loose fitting gear 41 to integrally configure the integral loose fitting gear 39.
Meshes with the fixed gear 43 on the parking brake shaft 31, so that the second forward speed can be obtained.

As described above, the gears of the third forward speed and the first reverse speed are transmitted to the counter shaft 32, and the sprocket 46 on the counter shaft 32 causes the left and right steering clutch mechanisms 48L and 48R to operate via the chain 47. It is transmitted to the sprocket 50 arranged. Steering clutch mechanism 48L / 48
By connecting and disconnecting R, the axles 26L and 26R are driven and the wheels 13L and 13R are rotated. The steering clutch mechanism 4
The left and right steering clutch link mechanisms 49L and 49R for connecting and disconnecting the 8L and 48R are provided, and the traveling mission case M is provided.
It can be operated outside. The steering clutch link mechanisms 49L and 49R are connected to steering clutch levers 51L and 51R provided on the left and right operation handles 1 via a push-pull wire mechanism 52.

Next, the drive mechanism of the partial reverse rotation rotary tiller R inside the traveling mission case M will be described. A fixed gear 42 on the input shaft 21 meshes with a loose fit gear 53 on the variable speed sliding gear shaft 30. The loose fit gear 53 meshes with the loose fit gear 33 on the tilling speed-change shaft 29. Also,
The fixed gear 37 on the variable speed sliding gear shaft 30 described above meshes with the loose fit gear 34 on the tilling speed variable shaft 29. Further, on the cultivating speed-changing shaft 29, there are left and right speed-changing sliding clutch bodies 54.
Numeral 55 meshes with the cultivating speed-change shaft 29 and is slidably interposed between the left and right. The shift sliding clutch bodies 54 and 55 are selectively slid to the left and right by the cultivating shift lever 11, so that the loose fitting gear 34, the loose fitting gear 33, and the shifting sliding clutch body 54 can be moved.
The high and low rotation of the tilling speed-change shaft 29 can be obtained by setting 55 to the connected state. The state in which neither of the variable speed sliding clutch bodies 54, 55 is engaged with the loose fitting gear 34 and the loose fitting gear 33 is the neutral state of the partial reverse rotation rotary tiller R.

The sprocket 22 on the cultivating transmission shaft 29
Further, the chain 23 is meshed. The chain 23 is
It is inserted into the cultivating mission case A and wound around three sprockets. Counter sprocket 56, reverse sprocket 57, forward sprocket 5
5 The forward sprocket 55 is configured to be directly engaged with the forward cultivating shafts 5L and 5R and driven.

The reverse rotation sprocket 57 rotates the forward rotation counter gears 59L and 59R on the forward rotation counter shaft 62, and the forward rotation counter gears 59L and 59R rotate on the reverse rotation tillage claw shaft 24 and reverse rotation tillage gears 60L and 60R. Are driving. The reverse cultivating gears 60L and 60R are the reverse cultivating claw shafts 24.
Drive. Then, the reverse cultivating claw 8 is planted on the reverse cultivating claw shaft 24, and the normal cultivating claw 7 is planted on the forward cultivating shafts 5L and 5R.

Next, referring to FIG. 6, the structure of the cutout portion 61 of the rubber droop G on the rear surface of the partially reversing rotary tiller R will be described. In the present invention, the cultivator B is arranged so that the tip thereof is located at the rear part of the central part of the rear part of the partially reversing rotary tiller R. Since the reverse cultivating pawl 8 is arranged at the center of the partial reverse rotary cultivating device R, the tip of the cultivator B is located at the rear of the reverse cultivating pawl 8.

Further, the single tail wheel 3 is arranged at a position behind the reversing tillage claw 8 of the tillage mission case A so as to be hidden behind the tiller B. It is a single tail wheel 3 so it is 1 in the center
Only placed. Then, a notch 61 is provided at the central portion of the rubber droop G that is stuck and hung on the rear surface of the tilling cover 9 that constitutes the partially reversing rotary tiller R, and a single tail is fitted to the notch 61. The wheel 3 is arranged. Further, the rubber dripping G is provided with a locking portion 63, and by engaging the portion of the locking portion 63 with an upper locking piece 64, the rubber dripping G is rolled up to form a cultivated soil. It is possible to bounce to the back of.

The essential parts of the present invention are disclosed in FIGS. 1, 6 and 7. That is, the partial reverse rotary tiller R
It is arranged so that the tip of the cultivator B is located in the central part which is the rear part of the reversing tiller claw 8 of No. 1, and in the rear part of the cultivator B, inside the part where the cultivator B is opened in a V shape, a single tail A wheel 3 is arranged. And the earthenware support rod 7 which supports the earthenware B
0 and the angle formed by the tail wheel support rod 6a of the tail wheel height adjusting device 6 that supports the single tail wheel 3 are different. That is,
The tail wheel support rod 6a and the pottery support rod 70 are configured not to be parallel but to intersect at an angle α.

The reason for setting the angle α is that, as shown in FIG. 1, when traveling on the road in a non-tiled state, the single tail wheel 3 influences the straightness of the body. Support rod 6a
The angle of the tail wheel support rod 6a is determined so that the wheel is substantially vertical to the ground. On the contrary, as shown in FIG. 7, the partial reversal rotary tiller R is pushed into the soil to partially rotate the rotary tiller R.
And the soil pot B bites into the soil, and the single tail wheel 3 is pulled upward by the tail wheel height adjusting device 6 so that the resistance does not become a resistance. Therefore, the angle α is configured such that the fertilizer support rod 70 that supports the fertilizer B in this state is orthogonal to the ground.

In FIG. 8, in the partially reversing rotary tiller R, one or a few of the normal tilling pawls 7 close to the reversing tiller claw 8 have a large diameter within a range in which they do not come into contact with the rotation locus of the reverse tiller pawl 8. The normal rotation large-diameter tilling claw 7K, the reverse rotating tilling claw 8 and the forward rotating tilling claw 7 have a crossover structure. It is suitable that the crossover area a of the normal large-diameter tilling nail 7K is approximately one-third of the tilling area b of the reversing tilling nail 8. In the case of the conventional partially reversing rotary tiller, the tilling soil by the reversing tiller near the tiller case is
The surface of the cultivated soil becomes uneven due to the nails and the cultivating case, cutting straws and rice plants are raised, and the appearance is significantly deteriorated. This configuration is a 7K large-diameter forward-turning claw than the reverse-turning claw 8.
By arranging, the above-mentioned inconvenience is solved.

With this construction, the tilling soil or the cut straw squirted forward by the reverse cultivating claw 8 can be rearward squirted again by the action of the normal-rotating large-diameter cultivating claw 7K, and the front accumulated soil can be reduced. It can be done. Further, due to this action, the tilled soil or the cut straw thrown to the central part of the tillage case moves in both side directions and is again thrown rearward by the forward claw. Therefore, front tillage tillage soil and cutting straw etc. are reduced, the accumulation is eliminated, and thus continuous tillage work can be performed. The number of the normal rotation large-diameter tilling claws 7K is one or several, and the others are the normal rotating tillage claws 7.

[0026]

As described above, the present invention has the following advantages. According to the first aspect of the present invention, in the structure in which the partially reversing rotary tiller R is attached to the rear part of the tiller, the rear part of the rotation track of the reversing tiller claw 8 is provided with the tiller B.
Since the cultivating soil is arranged, the tilling soil is not accumulated on the front surface of the soil cultivator B, and the soil cultivating work can be efficiently performed without increasing the traction resistance.

According to a second aspect of the present invention, in the structure in which the partially reversing rotary tiller R is attached to the rear part of the cultivator, the cultivator B is arranged at the rear part of the rotation locus of the reverse cultivating claw 8, and the cultivator B is attached. Since the angle of the tail wheel 3 is tilted forward more than the mounting angle of the tail wheel 3, when mounting the cultivator on the road,
The tail wheel support rod 6a becomes substantially vertical to the ground, and the single tail wheel 3
Since the ground touches the ground, the straight running performance of the cultivator is improved. Further, in the tilling work state in which the parts of the partially reversing rotary tiller R and the tiller B are bitten into the soil for traveling, the tiller support rod 70 of the tiller B is substantially vertical to the ground, so that the tiller B Therefore, it is possible to improve the straight running performance of the cultivator which is affected by.

[Brief description of drawings]

[Fig. 1] A pottery B at the rear of the partially reversing rotary tiller R
The whole side view which shows the structure of this invention which mounted | worn with the single tail wheel 3.

FIG. 2 is an overall plan view showing the structure of the present invention.

FIG. 3 is a side view of a drive unit of a traveling drive unit and a partially reversing rotary tiller.

FIG. 4 is a rear cross-sectional view of the traveling drive device.

FIG. 5 is a rear cross-sectional view of the drive device of the partial reverse rotation rotary tiller.

FIG. 6 is a rear view of a portion of the partially reversing rotary tiller.

FIG. 7 is an enlarged side view showing the positional relationship between the cultivator B and the single tail wheel 3 in the cultivated state by the partial reverse rotation rotary cultivator R.

FIG. 8 is a rear view showing a state in which the reverse cultivating claw 8 and the normal cultivating claw 7 overlap each other.

[Explanation of symbols]

 A Tillage mission case B Cultivator E Engine M Running mission case R Partial reverse rotation rotary tiller 1 Operation handle 3 Single tail wheel 5 Forward rotation tiller shaft 6 Tail wheel height adjustment device 6a Tail wheel support rod 7 Forward rotation tiller claw 8 Reverse Tilling claw 70 Plummer support rod

Claims (2)

[Claims] 1. A partially reversing rotary tiller, characterized in that, in a structure in which a partially reversing rotary tiller R is attached to the rear part of the tiller, a cultivator B is arranged at the rear of the rotation locus of the reversing tiller claw 8. 2. In a structure in which a partially reversing rotary tiller R is attached to the rear part of the tiller, a cultivator B is arranged at the rear of the rotation locus of the reverse cultivating claw 8 and the mounting angle of the cultivator B is set to the tail. A partially reversing rotary tiller which is mounted in a state in which the wheel 3 is tilted forward from the mounting angle of the wheel 3.