JPH0432001Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a rotary tiller that continuously plows a surface using a plurality of desks.

(Prior Art) Conventionally, as a rotary tiller using a desk, as shown in Japanese Utility Model Application No. 57-54201,
A desk cultivating body with multiple desks arranged side by side is installed on both sides of the machine frame. However, when cultivating with desk cultivating bodies on both sides like this,
There is a problem in that a residual tillage area is generated between the desk tillers on both sides, and it takes time and effort to dispose of the residual tillage area.

Therefore, first, a pre-treatment desk is installed in the front center between the desk tillers on both sides, and the soil between the desk tillers on both sides is plowed and turned over to the outside by this pre-treatment desk. A method has been proposed in which no residual tillage occurs. However, according to this structure, large clods of soil that have been plowed and reversed by the pre-treatment desk are piled up on the outside, leading to a new problem in that some parts of the soil swell up high, resulting in a mid-height phenomenon.

(Problems to be Solved by the Invention) As described above, rotary tillers using desks have the problem of residual tillage or over-tilting phenomena.

The present invention has been developed in view of the above points, and the object thereof is to enable a rotary tiller using a desk to perform planar tillage in an orderly manner without causing the mid-height phenomenon.

[Structure of the idea]

(Means for solving the problem) The rotary tillage device of the present invention has a machine frame and a plurality of desks arranged on both sides of the machine frame to continuously till and turn the soil inward. The desk tilling bodies on both sides are arranged in parallel at intervals, and the soil located between the desk tilling bodies on both sides, which is disposed at the front central part between the desk tilling bodies on both sides, is tilled and turned over in advance to the outside. A pair of pre-processing desks are arranged opposite each other in a substantially eight-shape shape when viewed from above, and each of the pair of pre-processing desks is arranged between a rear part of each of the pair of pre-processing desks with respect to the rear end thereof and a front part thereof with respect to the inner side of each of the desk cultivating bodies on both sides. It is equipped with soil guides on both sides for guiding and dispersing the tilled and reversed soil outwardly using a pre-treatment desk.

(Function) In the present invention, first, the pair of pretreatment desks in the center are located at an intermediate position between the desk cultivating bodies on both sides, and
The tilled soil is cut and tilled in advance at a position slightly ahead of the desk tillers on both sides, and then turned over to both sides. The soil inverted by the pair of pretreatment disks is guided and dispersed outwardly in front of each desk of the desk cultivating bodies on both sides by the soil induction bodies on both sides as the pair of pretreatment disks moves forward.

Then, the desk tillers on both sides till the tilled soil, including the soil that has been tilled and dispersed at the pretreatment desk. At the same time, the desk tillers on both sides are continuously plowed and reversed inwardly by the desks, so that the tilled portion by the pretreatment desks is filled. Therefore, as a whole, the surface plowing is carried out in an orderly manner without particularly high raised middle and high areas.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 3 show a first embodiment, in which reference numeral 1 denotes a machine frame, and the front part of this machine frame 1 is provided with a connecting part 2 to a tractor.

Drive-type desk cultivators 3 on both sides are disposed at the lower portions of both sides of the machine frame 1, respectively. In the desk cultivating body 3 on both sides, the inner end of a main frame 5 is supported horizontally rotatably by a support shaft 4 at the lower part of both sides at the rear of the machine frame 1. A drive shaft 8 is horizontally suspended through the case 6 and a bearing 7 at the inner end, and a plurality of circular bowl-shaped desks 9 are installed at predetermined intervals on this drive shaft 8 to continuously turn the soil inwards. installed in each. In addition, an angle adjustment arm 1 is attached to the rear of the main frame 5 on both sides with a support shaft 10.
The outer end of the adjusting arm 11 is rotatably mounted on an axis, and the angles on both sides and the inner end of the adjusting arm 11 are connected to bolts through one of a plurality of mounting holes 12 drilled at appropriate intervals. It is fixed by a nut 13 to a support frame 14 protruding from the center rear part of the machine frame 1. Then, by selecting the mounting holes 12 of each angle adjustment arm 11 and attaching and fixing them with bolts and nuts 13, each angle adjustment arm 11 is adjusted to expand and contract, and the main frame 5 is attached to the machine frame 1.
The desk cultivating body 3 on both sides is rotated about a support shaft 4 as a fulcrum to adjust the angle of the desk cultivating body 3 on both sides.

A transmission 15 is provided at the upper center of the machine frame 1. This transmission 15 has a power input shaft 16 bored in the front part thereof, which is connected to the power take-off part of the tractor, and a power output shaft 18 connected to the power input shaft 16 via a bevel gear mechanism 17 in both sides. Both ends are protruded. A transmission shaft 20 is connected between both ends of this power output shaft 18 and input shafts 19 protruding from the upper ends of the transmission cases 6 on both sides through universal joints at both ends, and power is transmitted from the tractor to the transmission case 15. Power input shaft 16, bevel gear mechanism 17, power output shaft 1
8, the power is transmitted to the drive shaft 8 via the transmission shaft 20, the input shaft 19 of the transmission case 6, and a sprocket and chain inside the transmission case 6 (not shown), so that each desk 9 is rotationally driven.

A pair of pre-treatment devices are located at the central lower part of the machine frame 1 in the front center between the desk tillers 3 on both sides, and plow and invert the soil located between the desk tillers 3 on both sides in advance to the outside. A desk 21 is provided. In the pair of pre-processing desks 21, a pair of circular, bowl-shaped rotating desk bodies 23 are arranged opposite to each other in a substantially eight-shape shape in a plan view at the lower end of a beam 22, and are rotatably mounted on shafts. That is, as shown in Figure 3,
Bearing tubes 24 are provided on both sides of the lower tip of the beam 22, and a pair of desk bodies 2 are installed in the bearing tubes 24 on both sides.
A shaft 25 of No. 3 is rotatably fitted, and a pin such as a bolt inserted from the outside of the bearing sleeve 24 is engaged with an annular groove formed on the outer circumferential surface of the shaft 25 for positioning. Furthermore, mounting pieces 26 are protruded from both sides near the lower end of the beam 22, and a scraper 27 for the desk body 23 is fixed to the mounting pieces 26 on both sides by a plurality of bolts and nuts 28. In addition, a plurality of mounting holes 29 are bored at appropriate intervals in the upper part of the beam 22, and as shown in FIG. 30 and is fixed with a bolt/nut 31 through one of the mounting holes 29. And the mounting hole 29 of the beam 22
By selecting and removing bolts and nuts 31, the beam 22 can be vertically adjusted and removed.

Further, as shown in FIG. 3, connecting fittings 32 are fixed to the middle both sides of the machine frame 1 by a plurality of bolts 33, and are adjusted in the vertical cylindrical portions 34 of the connecting fittings 32 on both sides. A shaft portion 36 of the metal fitting 35 is fitted so as to be vertically movable and horizontally rotatable, and its set position is fixed by a plurality of bolts 37. Further, an adjusting rod 40 provided on the soil guide body 39 is fitted into the horizontal cylindrical portion 38 of the adjusting fitting 35 so as to be adjustable forward and backward, and its set position is fixed by a plurality of bolts 41, and the adjusting rod 40 is inserted on both sides. The soil guide member 39 is positioned by adjusting its vertical movement and its movement toward the sides depending on the working environment. As shown in FIGS. 1 and 2, the soil induction bodies 21 on both sides are arranged between the rear part of the pair of pretreatment desks 21 relative to the rear ends and the front part of each desk cultivator 3 on both sides relative to the inner side. The tilled and inverted soil by the pretreatment desk 21 is guided and dispersed outwardly.

In the above configuration, the machine frame 1 is connected to the tractor by the connecting part 2, and the power input shaft 16 of the transmission 15 is connected to the power output part of the tractor to rotationally drive each desk 9 in the desk cultivating body 3 on both sides. While being pulled by a tractor, the tilled soil is tilled to a predetermined width using desk tillers 3 on both sides.

At the same time, a pair of pretreatment desks 21 at the lower center rotate at a position in the center between the desk tillers 3 on both sides and slightly ahead of the desk tillers 3 on both sides, cutting and cultivating the tilled soil in advance. and flip it to both sides. Then, as the soil is turned over by the pair of pre-treatment desks 21, it is transferred to the desk cultivating bodies 3 on both sides by the soil induction bodies 39 on both sides as the pair of pre-treatment desks 21 move forward.
It is guided and distributed to the outside of the front side of each desk 9.

Then, as described above, the tilled soil including the soil that has been plowed and dispersed by the pretreatment desk 21 is tilled by the desk tillers 3 on both sides. Along with this,
Since the desk cultivating bodies 3 on both sides are continuously plowed and reversed inwardly by the desks 9, the plowing area by the pretreatment desk 21 is filled. Therefore, as a whole, the surface plowing is carried out in an orderly manner without particularly high raised middle and high areas.

Next, in the embodiment described above, the soil derivative 39 is connected to the machine frame 1 via the connecting fitting 32 and the adjusting fitting 35. However, the invention is not limited to this, and as shown in FIG. It may be attached to the attachment piece 26 to which the attachment piece 26 is attached via the adjustment piece 42 so that it can be freely adjusted forward and backward with respect to the side part. In this case, the adjustment piece 4 fixed to the soil derivative 39
A plurality of sets of mounting holes are drilled in the base end of the holder 2, and the scraper 27 is attached to the mounting piece 26 using a plurality of bolts and nuts 28 to which the scraper 27 is attached to the mounting holes at selected positions.

In addition, as shown in FIG. 5, the scraper 27
A locking piece 43 is integrally protruded from the locking piece 4.
A soil derivative 39 may be attached to 3.

Furthermore, as shown in FIG. 6, the soil inducer 39 is not limited to the plate-like structure shown in each of the above embodiments, and the small-diameter rotary disk 44 is connected to the vertical position relative to the connecting fitting 32 via the support rod 45. It may be mounted for adjustment and horizontal angle adjustment.

In addition, in the implementation, as shown in FIGS. 7 and 8, the rotating desk bodies 23 as the pair of pre-processing desks 21 are set at a predetermined angle α in a substantially eight-shape shape when viewed from above, and when viewed from the rear. is also set to a predetermined angle β, and set so that the mutually adjacent portions that contact the ground surface while buried underground, that is, the intersections between the center of the rotating desk bodies 23 on both sides and the ground surface, are the narrowest. . Thereby, the remaining plowing portion generated between the rotating desk bodies 23 can be reduced as much as possible.

In addition, during implementation, please refer to Figures 7, 8, and 9.
As shown in the figure, it is preferable that a tilling claw 46 for tilling the remaining tillage area is detachably attached to the beam 22 at the rear part between the pair of pre-treatment desks 21.

[Effect of idea]

According to the present invention, a pair of pre-treatment desks in the front central part cut and plow the tilled soil in the center in advance and invert it to both sides, and the soil inverted by the pair of pre-treatment desks is transferred to both sides by the soil derivatives on both sides. By guiding and dispersing the desk cultivating body toward the outside of the front of each desk, the inverted soil tilled by the pretreatment desk will not be piled up in its lumps on the uncultivated soil. In addition, both sides of the pair of pretreatment desks can be tilled and inverted with the pretreated soil distributed on both sides by the desk tillers on both sides, and with this, the desk tillers on both sides are Plowing is continuously reversed inward to fill in the plowed area by the pre-processing desk, and as a result, the surface is plowed in an orderly manner without causing any particularly uneven areas. can be done.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view of the rotary tiller, Fig. 2 is an explanatory plan view of a part of the same, Fig. 3 is a perspective view of the pretreatment section of the above, and Fig. 4 is a plan view of the rotary tilling device.
6 to 6 are perspective views of the preprocessing section showing other embodiments, FIG. 7 is a cross-sectional plan view of the preprocessing desk section, FIG. 8 is a rear view of the same as above, and FIG. FIG. 1... Machine frame, 3... Desk cultivating body, 9... desk, 21... pretreatment desk, 39, 44... soil derivative.

Claims (1)

[Scope of Claim for Utility Model Registration] A machine frame and a plurality of desks arranged on both sides of the machine frame for continuously tilling and inverting the soil so as to turn the soil inward. A desk tiller and a desk tiller are arranged in the front central part between the desk tillers on both sides, and are arranged opposite each other in a substantially eight-shape in plan view, so that the soil located between the desk tillers on both sides is plowed and turned over in advance to the outside. A pair of pre-treatment desks; and a pair of pre-treatment desks disposed between the rear part of each of the pair of pre-treatment desks and the front part of each of the desks on both sides of the tilling body, which is arranged between the rear part of each of the pair of pre-treatment desks and the front part of each of the desks on both sides of the tilling body. A rotary tillage device characterized by comprising soil inducers on both sides that guide and disperse the soil outwardly, and the following.