JPS60105403A - Double-axis type rotary plough - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a biaxial rotary tiller for making seedbeds for upland farming.

The conventional tilling device is a rotary tiller that specializes in raising the soil using only the -axis, and can only raise the soil by tilling the - times. After that, in order to obtain fine soil that is ideal for use as a seeding bed, it is necessary to repeat tilling with crushed soil using faster rotation of the nails.

(b) Prior art Although there have been two-shaft rotary tillers in the past, they were designed for deep tilling for soil improvement, and the second fine tilling claw shaft was configured to be even lower than the first fine tiller. This also applies a large amount of torque, so it has a sturdy structure as a side drive.

Also, since this is a special machine designed to specialize in deep plowing, we do not consider removing only the second fine plow. On the other hand, in the biaxial rotary tilling device of the present invention, the second fine grain is a tilling claw shaft for crushing soil to finely form the large soil lump caused by the first fine grain, and the fine grain shaft is also arranged above.
It is constructed so that the torque is also minimized.

(c) Purpose of the Invention The biaxial rotary tilling device of the present invention eliminates the side drive of the conventional tilling claw shaft for crushing soil so that the tilling device for crushing soil can be easily installed and removed.
The power transmission system is a simple center drive system. In addition, with this configuration, there is no need to use a chain case or gear case as the power transmission method.
The power transmission section can be configured with a simple structure using a universal joint that passes through the center of the rotary tiller.

B) Structure of the Invention The purpose of the present invention is as described above, and the detailed structure of the present invention will be explained based on the structure of the embodiment shown in the attached drawings.

FIG. 1 is a side view of a case in which the rough tilling device is a center drive, and the tilling device for crushing soil is also a center drive.

FIG. 2 is a drawing showing the power transmission state in plan view. FIG. 3 is a side view when the rough tilling device is a side drive and the crushing tillage device is a center drive. Figure 4 is also a rear view. FIG. 5 is a plan view similarly showing the power transmission state.

Let me explain the configuration of FIGS. 1 and 2.

Power is transmitted to the two-shaft rotary tiller through the rear p't'o shaft that protrudes rearward from the rear axle case of an agricultural tractor. Universal joint 1. ! 3
) is fitted to the rear PTO shaft (incorporated), and its rear end is fitted to the input shaft +151 of the roughly raised rotary gear box (9). The input shaft (15) has a bevel gear C! ! 9)
is fixedly installed, and the bevel gear +29+ is connected to the power transmission shaft 128
) meshes with the upper bevel gear (to)). Power transmission shaft! 28) has a sprocket (451) fixedly installed, and power is transmitted from +451 to the sprocket ((support)) of the rough tilling claw shaft (2) by a chain (46). The claw shaft is a roughly raised power transmission case (7)
It protrudes to the left and right, and a rough tilling claw (1) is planted on the shaft (2) (21).

The bevel gear 01) of the rotor IJ-PTO shaft meshes with the aforementioned bevel gear (30), and the rotary PTO shaft
I'm rotating the example. This rotor! A J-PTO shaft (universal joint 10 at the bottom) is fitted, and its rear end is fitted to the input shaft of the earth crushing rotary gear box (8).

A bevel gear link is fixed to the input shaft (2), and a bevel gear (5) of the shaft (351) meshes with this bevel gear mark.

A sprocket (36) is fixedly installed on the shaft (35), and a chain (A) is wound between the sprocket (36) and the sprocket (3η) on the crushing soil tilling claw 5 (4). A tilling claw (3) for crushing soil is fixedly attached to a crushing soil tilling claw shaft (4).

The above is the power transmission system, and the other overall configuration will be explained from FIG. 1.

The two lower links of the agricultural tractor are the bracket 121
) is pivotally connected to the lower link pivot pin (8). The top link is attached to the top link bracket (pivot hole 126 of 14J).
).

The depth frame (11) is also pivotally supported at its base end by the bracket (21J), and the depth control handle (11) is
3) and the screw rod (121). An adjustment handle (5) is interposed between the depth frame (11) and the crushed soil tillage cover 06), and the interval between them can also be adjusted. It is possible. In this case, the side plate [81] and the crushed soil side plate (one wing pivot shaft 201) rotate.

The crushed soil tilling cover f161 is pivotally supported by a pivot shaft I20 which overlaps the rear part of the tilling cover (1η) so that the tilled soil does not scatter even when rotated. Crushed tillage cover +16
A rear cover (41) is pivotally supported at the rear end of 1.

Next, the cases shown in FIGS. 3, 4, and 5 will be explained.

The difference is that the rough tillage device is driven by a side drive system.

In other words, the input shaft 0 of the roughly raised rotary gear box (9)
ω protrudes directly through to the rear, forming the rotary PTO shaft. The first layer of the power transmission shaft of the roughly raised rotary gear box (9) is connected to the main beam (42
The power is transmitted to the sprocket (4η) in the power transmission case (39) fixed to the side plate (181) by extending the inside of the i. Sprocket (wound between Tsukuda and Tsukuda. On the right end of the other main beam (4
4) is fixedly installed, and supports the right end of the rough tilling claw shaft (2) with a bearing.

The tilling claw shaft (4) for crushing soil is driven by a center drive system via a universal joint 00), as in the case of FIGS. 1 and 2.

In the case of Figures 3 and 4, the distance between the depth frame (11J) and the tilling device for crushing soil can be adjusted using the hanging rod f40+ +4.
This is done by adjusting the position of the pin (49) pushed into 01.

In addition, the lifting rotary gear box (9) and the rotary gear box for crushing soil (universal joint +10 connecting between 81) or their cover engage with the connecting rod (43) of the depth frame fill (11) when moving up and down. To prevent this, the connecting rod (43) forms a convex portion that is retracted upward.

In addition, the tilling claw shaft (4) for crushing soil is designed to reduce the load torque, and since the sowing bed is located only in the center, unnecessary length is not required. The width is also quite narrow. This narrowing structure is difficult to achieve in the case of side drive.

In addition, the tilling claw shaft (2) for raising the soil is low, and the tilling claw shaft for crushing soil is configured high.

(e) Function of the invention Since the structure is as described above, when a large soil clod is raised with the raising and tilling claw (1), a part of the large soil gets on the hatchet claw and is blown away, so that it can be used for crushing soil. It falls within the rotation locus of the tiller claws (3). When the soil enters this area, it is thrown up and crushed by the rotation of the soil-crushing tilling claw (3), and falls into fine soil along the rear cover (41).

The soil created by this tillage consists of large soil clods, medium soil clods, grass straw,
The fine soil is arranged in layers in order, with the surface being fine soil suitable for sowing, and the bottom layer forming a large soil mass that allows ventilation and is suitable for field crops.

(f) Effects of the Invention As described above, the present invention provides a biaxial rotary tilling device in which a lifting tiller is arranged in the front and a tilling device for crushing soil is arranged parallel to the rear, and the tilling claw shaft for crushing soil is arranged in the center. The power transmission case is a center drive type that transmits power to the left and right tilling claw shafts for crushing soil, and the power is transmitted to the rotary gear box for crushing soil. Since power is transmitted through the inlet, the power transmission case of the tilling claw shaft for crushing soil does not pass through the side plate part, so it does not have a negative effect on mud scattering, and the power transmission is located in the center of the rotary tilling device in the left and right direction. Since this is done using a universal joint, there is no possibility of twisting of each part when a load is applied, and by removing the universal joint, it can be converted into a rotary tilling device with only a tilling device. This can be done with simple operations.

[Brief explanation of drawings]

FIG. 1 is a side view of a case in which the raising and tilling device is a center drive, and the tilling device for crushing soil is also a center drive. FIG. 2 is a drawing showing the power transmission state in plan view. FIG. 3 is a side view of a case where the raising and tilling device is a side drive and the tilling device for crushing soil is a center drive, and shows the case where the tilling device for crushing soil is adjusted to a high position. Figure 4 is also a rear view. FIG. 5 is a plan view showing the state of power transmission. (1)... Raising tilling claw shaft (2)... Raising tilling claw shaft (3)... Tilling claw shaft for crushing soil (4)... Tilling claw shaft for crushing soil (6)... For crushing soil Power transmission case (8)... Rotary gear box for crushing soil (10).
...Universal Joint (Foundation)...Rotor 17
- PTO axis applicant Yanmar Diesel Co., Ltd. agent Patent attorney Toshikazu Yano

Claims (1)

[Claims] In a two-shaft rotary tilling device in which the lifting tiller is placed in the front and the tilling device for crushing soil is arranged parallel to the rear, the tilling pawl shaft for crushing soil is placed between the power transmission case in the center and the tilling pawl shafts for left and right crushing soil. The second invention is characterized in that the power is transmitted to the rotary gear box for crushing soil through a universal joint from the rotary tilling device protruding from the rear surface of the rotary gear box. Axial rotary tiller.