JPH0233601Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a rotary tiller that is attached to the rear of an agricultural tractor, and the two shafts, one for roughing and the other for crushing soil, are parallel to each other. The present invention relates to a biaxial rotary tilling device that is installed to perform rough raising and crushing of soil at the same time in subsequent crops in paddy fields.

(b) Prior Art Biaxial rotary tillers have been known for some time.

For example, Publication No. 16768-16768, Utility Model Publication No. 16768-
This is similar to the technology described in Publication No. 113805.

(c) Problems to be solved by the invention The invention is a biaxial rotary tiller that can finish roughing and crushing the soil in one stroke when planting soybeans and wheat as subsequent crops in paddy fields. It can be used as a machine, thereby cutting the work time and effort in half.

In addition, when the biaxial rotary tilling device is used for rough raising and puddling in rice cultivation in paddy fields, it must be used as a single-shaft rotary tilling device, and a tilling device for crushing soil is not required, so it can be removed. That is.

In such a case, the tilling device for crushing soil can be easily attached and detached, and even after the tilling device for crushing soil is removed, the parts of the biaxial rotary can be used as they are as a single-shaft rotary as much as possible.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

An output gear box 32 is installed at the end of the main beam 26 of the rough tillage device in which a power transmission shaft 27 is arranged, and outputs power to the tillage device for crushing soil.
Power is transmitted from the output gear box 32 to the input gear box 33 fixedly installed on the crushing shaft cover 5 of the tilling device for crushing soil through a universal joint 31,
At least one of the output gear box 32 and the input gear box 33 is configured to be detachable from the universal joint 31, and in the case of a biaxial rotary, the area around the rough tilling claw 1 is covered with a rough tilling cover 25. Then, the space between the rough tilling claw 1 and the tilling claw for crushing soil 7 is covered with a crushed soil tilling cover 11, and the rear cover 10 is pivotally supported by a pin 40 at the rear end of the crushed soil tilling cover 11. In this example, a rear cover 10 is pivotally supported at the rear end of a rough tilling cover 25 by a pin 12.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is a side view of a biaxial rotary tilling device, and FIG. 2 is a side view of the case where the tilling device for crushing soil is removed and used only as a rough tilling device. Third
4 is a rear sectional view with the universal joint 31 attached, and FIG. 5 is a rear sectional view with the universal joint 31 removed.

Referring to FIGS. 1 and 2, the overall configuration will be explained.

Power is transmitted from the rear PTO shaft of the agricultural tractor to the input shaft 22 of the rotary gearbox 21 located in the center of the rotary tiller in the left-right direction through a universal joint.

The rotary gearbox 21 extends downward and forms a chain case 3.
Roughly raised tilling claw shafts 2, 2 are protruded from the left and right sides of the lower end. A rough tilling claw 1 is attached to this rough tilling claw shaft 2.
has been planted.

Main beams 26, 26 protrude left and right from the side surface of the rotary gearbox 21, and a power transmission shaft 27 is provided in the left main beam 26.
Power is transmitted to an output gearbox 32 provided on the left side of the main beam 26.

In addition, a mast stay 28 is attached to the front part of the mounting flange 37 fixed to the middle part of the main beams 26, 26.
is fixedly installed to reinforce the top link mast 20 protruding from the side surface of the rotary gearbox 21. A pin 38 that fixes the lower end of the mast stay 28 serves as a lower link pivot pin of the agricultural tractor.

A top link is pivotally supported in a pin hole 39 at the apex of the top link mast 20. Left and right flanges 37
Depth control bars 23, 23 are protruded from the rear of the vehicle, and a depth wheel 30 is supported at the rear end of the depth control bars 23 via a vertical rod 24.

The depth control bar 23 is adjusted up and down using the plowing depth adjustment handle 16. Side plates 4, 4 are fixedly installed inside the output gear box 32 on the left side and on the inside of the right side frame, and these two left and right side plates 4, 4
An arc-shaped rough tillage cover 25 is installed between the two.

The crushed soil tilling cover 11 is fixed to the rear end of the rough tilling cover 25 with a pin 12, and the rear end of the crushed soil tilling cover 11 is fixed to the crushing soil shaft cover 5 with a pin 40.

Further, a rear cover 10 is simultaneously pivotally supported on the pin 40 of the crushing shaft cover 5, and the rear cover 10
is urged downward by the spring of the hanger rod 17, and rotates up and down according to the unevenness of the field.
A rubber sag 13 is fixed on the lower surface of the rear cover 10 to prevent soil from adhering to the rear cover 10 and to reduce impact.

Further, a scraping plate 41 protrudes from the rear cover 10 toward the rotation gap of the soil crushing claws 7, and scrapes and cuts clogged straw waste and soil clods.

In addition, from the bottom of the crushed soil tillage cover 11, the rake rod 9
Dozens of them are placed to stop large earth clods. As a result, large lumps of soil that were not crushed are sorted out. As a result, large lumps of soil that have not been crushed are sorted out and dropped to the soil surface as soon as possible, followed by fine grains that fall to form the sowing beds for soybeans and wheat.

Similarly, straw waste and rice plants are stopped by the rake and fall first, so they form a layer from the bottom in order, with the top layer forming a seed bed of fine soil.

In addition, the large soil mass at the bottom improves air circulation, promotes the proliferation of microorganisms, and promotes the rotting of straw waste and rice plants.

The soil crushing shaft cover 5 rotates around a pin 12 and serves as the center of vertical movement of the tilling device for crushing soil. The hook pin 6 and the notch 5a constitute a lower limit stopper of rotation.

Further, the bolt 34 serves as an upper limit stopper for rotation. A bearing case is fixed to the right-hand crushing soil tilling cover 5, an input gear box 33 is fixed to the left-hand crushing soil shaft cover, and a tilling claw shaft 8 for crushing soil is installed across both. This tilling claw shaft for crushing soil 8
A crushing claw 7 configured as a Tomoe claw shaft or the like is fixedly installed on the
This soil crushing claw 7 rotates clockwise, contrary to the counterclockwise direction of the hatchet claw, which is the rough tilling claw 1. A universal joint 31 is interposed between the output gearbox 32 and the input gearbox 33.

The tip of the vertical adjustment handle 14 of the tilling device for crushing soil is pivotally supported on the crushing soil tilling cover 11 by a pivot support 44.

By turning the vertical adjustment handle 14, only the tilling device for crushing soil can be moved up and down without changing the plowing depth of the rough tilling device. The vertical adjustment handle 14 is pivotally supported between the depth control bars 23 and 23 by a connecting pin 15.
It can be removed by removing 5. 18,1
9 is a sensor arm and a sensor link used for automatic depth control.

FIG. 2 shows the state in which the tilling device for crushing soil is removed, and the tilling device for crushing soil includes a crushing soil shaft cover 5, a crushing soil claw shaft 8, a crushing soil claw 7, a crushing soil tilling cover 11, a vertical adjustment handle 14, a bearing case 43, The input gear box 33, universal joint 31, etc. are removed as one unit.

This removal is done by connecting the connecting pin 15 of the vertical adjustment handle 14 and the front and rear pins 1 of the crushed soil tillage cover 11.
2. It can be removed by removing the pin 40.

Even after removal, the output gearbox 32 is left in place.

Then, the rear cover 10 moves forward and is pivoted to the rear end of the rough tillage cover 25 with a pin 12, and the hanger rod rotates forward to change its position and urge it downward.

As shown in Figures 4 and 5, when the crushing shaft cover 5 is used for rough-raising, another crushing shaft cover 8' may be attached, or the one used in the tilling device for crushing soil may be removed. It is okay to do so.

The power transmission system will be explained with reference to FIGS. 3, 4, and 5.

A power transmission shaft 27 within the main beam 26 rotates an output shaft 55 by output bevel gears 53 and 54 on the left side. A universal joint 31 is interposed between the output shaft 55 and the input shaft 56 of the input bevel gear box 33.

A short shaft 50 is driven by an input shaft 56 via bevel gears 55 and 56. A tilling claw shaft 8 for crushing soil is fixed to this short shaft 50. 51 and 52 are for the extendable universal joint 31,
This is a cover designed to be able to follow.

A pin 58 is provided between the output shaft 55 and the universal joint 31, and a doll pin 59 is provided for fixing this pin in an inserted state. 5
7 is a bolt for attaching the cover 51.

(f) Function of the invention This invention is suitable for use in crushed soil, since when a biaxial rotary tiller is used for paddy rice cultivation, both roughing and puddling can be carried out using only the rough tilling and tilling equipment. Tillage equipment is not necessary.

In this case, first remove the bolts 57 shown in FIG. 5, and then slide the cover 51 downward. Next, the doll pin 59 is pulled out, the pin 58 is removed, and the universal joint 31 is removed.

After that, remove the pin shown in Fig. 1, remove the notch 5a of the crushing shaft cover 5 from the pin 6, and at the same time remove the vertical adjustment handle 14 and the coupling pin 15, and connect the automatic depth control feedback link 19.
This causes the hanger rod 17 to be removed. Thereafter, the rear cover 10 is roughly raised using the pins 12 and replaced with the tilling cover 25.

(g) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the power transmission system to the crushed soil tilling device can be removed at the universal joint, and in the case of paddy rice cultivation, the tilling device for crushing soil can be removed and the tilling device can be used alone for rough raising. It is. On the other hand, when growing soybeans or wheat as a back crop for paddy fields, a tilling device for crushing soil can be attached and the soil can be rough-raised and crushed in one process, so one unit can be used for two purposes.

This allows the rotary tiller to be redundant,
There is no need to purchase multiple machines, and waste on the demand side can be eliminated.

Second, the rough tilling cover 25 and the rear cover 1
By arranging the crushed soil tilling cover 11 between the two shafts, when converting between the uniaxial type and the biaxial type, only the crushed soil tilling cover 11 can be attached and detached, and other parts can be used for the same purpose.

Thirdly, by replacing the rear cover 10 with the pins 12 and 40 in the uniaxial and biaxial types, the rear cover 10 maintains an optimal gap with respect to the rough tilling claws 1 and the soil crushing tilling claws 7. It was possible to improve the crushing effect, finish accuracy and levelness, and suppress the increase in required horsepower.

That is, the pivot position of the rear cover can be easily changed between the uniaxial type and the biaxial type, and in either case, the posture of the rear cover can be maintained in the optimum posture, and the pin 12 The rear cover can be easily pivoted using the pin 40.

At the same time, the position of the rear cover 10 can be set at an optimal gap with respect to the rotating outer periphery of the rough tilling claw 1 and the soil crushing tilling claw 7.

This improves the soil crushing effect, improves the finish of tilled soil, and improves the levelness of the soil surface.
This made it possible to reduce the required horsepower.

Fourth, if there are two types of rear covers, one for crushing soil tillage equipment and one for rough tillage equipment, it is possible that the desired performance may not be obtained due to incorrect installation. By doing so, it can be used for both purposes, so there is no chance of installation errors.

[Brief explanation of the drawing]

FIG. 1 is a side view of the biaxial rotary tilling device of the present invention. Figure 2 shows the tilling device for crushing soil removed.
A side view when used only as a rough tillage device. FIG. 3 is also a rear sectional view. FIG. 4 is a rear sectional view when the universal joint is connected.
FIG. 5 is a rear sectional view with the universal joint removed. 1...Raw-raising tilling claw, 2...Rough-raising tilling claw axis,
5... Soil crushing shaft cover, 7... Tilling claw for crushing soil, 8...
... Tilling claw shaft for crushing soil, 10... Rear cover, 11...
...Crushed soil tillage cover, 12,40...Pin, 25...
...Rough tillage cover, 26...Main beam, 2
7...Power transmission shaft, 31...Universal joint, 32...Output gearbox, 33...Input gearbox.

Claims (1)

[Scope of utility model registration request] An output gear box 32 is provided at the end of the main beam 26 of the rough tillage device in which a power transmission shaft 27 is disposed, and outputs power to the crushing tillage device.
The power is transmitted from the output gear box 32 to the input gear box 33 fixed to the crushing shaft cover 5 of the tilling device for crushing soil through a universal joint 31,
At least one of the output gear box 32 and the input gear box 33 is configured to be detachable from the universal joint 31, and in the case of a biaxial rotary, the area around the rough tilling claw 1 is covered with a rough tilling cover 25. Then, the space between the rough tilling claws 1 and the tilling claws 7 for crushing soil is covered with a crushed soil tilling cover 11, and the rear cover 10 is pivotally supported by a pin 40 at the rear end of the crushed soil tilling cover 11, in the case of a uniaxial rotary. is a uniaxial type, characterized in that a rear cover 10 is pivotally supported at the rear end of a rough tilling cover 25 by a pin 12.
Biaxial conversion rotary tilling device.