JPH02163001A - Rotary tiller - Google Patents

Abstract

PURPOSE:To shorten the tilling time by providing a hatchet edge for plowing and soil-crushing and a blade edge for earthing up and filling and attaching both edges to a tilling edge holder in freely exchangeable and detachable manner. CONSTITUTION:A tilling shaft 12 is rotated with a power-output shaft 5 of a tractor 1 via a propelling shaft 7, gear cases 17a... and a sprocket 17c. Soil is plowed and finely crushed with hatchet edges 20... and the crushed soil is pushed out in the direction of the tilling shaft 12 and heaped up with the following blade edge 18. When the tilling edges are placed in multiple stages, soil is repeatedly subjected to plowing, crushing and earthing and sufficient amount of fresh air is introduced into soil. The tilling time can be remarkably shortened by the use of the apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary tillage device suitable for raising ridges in a tobacco field.

(Conventional technology) Tilling blades are installed radially on a horizontally arranged tilling shaft,
2. Description of the Related Art A rotary tillage device for tilling field soil by forcibly rotating the tilling shaft is well known.

For example, ridge-raising work is essential for tobacco cultivation, and conventionally, this ridge-raising work first involves attaching a machete blade to a tiller shaft to plow the field and crushing the soil, then replacing the tilling blade with a blade to crush the crushed soil. Fill the area with soil and mound it around the tobacco stems.

(Problems to be Solved by the Invention) In the conventional technology, the first operation using a machete blade;
Two operations consisting of the second operation using the blade blade and a replacement operation for attaching the blade are required, resulting in a longer operation time.

Furthermore, since it is necessary to always have at least two types of tillage blades consisting of 91 sets of oaks and 1 set of feather blades, there are problems such as an increase in the area occupied by the farm machinery equipment area.

(Means for Solving the Problems) In order to solve the above problems, the present invention arranges a hatchet blade and a blade blade on a tilling shaft via a tilling blade holder that is replaceably and detachably attached.

(Function) The tilling shaft is forcibly rotated using the power output shaft of the tractor. First, a machete blade plows and crushes the field, and a feather blade gathers the crushed soil and mounds it up. It is characterized by being able to create ridges in one operation.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a side view of a tractor equipped with a rotary tillage device of the present invention.

The tractor 1 of this embodiment includes front wheels 3, 3 and rear wheels 4, 4 at the front and rear of a body frame 2, and a power take-off shaft 5 and a tiller mounting device 6 at the rear.

A propulsion shaft 7 including a universal joint is fitted into the power take-off shaft 5,
This propulsion shaft forcibly drives a rotary tiller, which will be described later.

The tiller mounting device 6 serves to tow the rotary tiller and also to regulate the height and inclination of the rotary tiller.
It consists of a lift arm 6C and a hydraulic cylinder (not shown) that raises and lowers this lift arm.

The rotary tillage device 10 includes a frame body 11 towed by the tiller mounting device 6, a tillage shaft 12 rotatably supported horizontally on the frame body, and tillage blades 13 arranged on the tillage shaft 12. and an arcuate cover 14 suspended from the frame 11. In the figure, 15 is a tilling blade 13 as appropriate.
It is a lever used when retracting ... upwards,
16 is a tail wheel.

The rotary tillage device 10 receives power from the power take-off shaft 5 while being towed by the tractor 1, and transmits this power to the propulsion shaft 7, gear case 17a, horizontal shaft 17b1 sprocket 17c, chain 17d1 sprocket 17c1 and tillage shaft 12 in this order. Then, the tilling blade 13... is rotated.

FIG. 2 is a view taken along the line A-A in FIG. 1, and the tilling shaft 12 of this embodiment is cantilevered by the frame 11, extends inward, and is fitted with a plurality of tilling blade holders 13A, 13B, and 13C. Matching.

The tilling blade holder 13A has a sleeve 13 that fits on the tilling shaft 12, as shown in FIG. 3, which is an exploded perspective view of the main part.
a, and a fan-shaped blade blade fixing plate 13c fixed to the outer periphery of this sleeve via a reinforcing plate 13b and extending in the radial direction.
and a machete blade fixing member 13d provided along the blade fixing plate.

The machete blade fixing member 13d is combined with the blade fixing plate 13c to form a pocket with a rectangular cross section that accommodates the handle of the machete blade.

Since the machete blade fixing member 13d has a groove-shaped cross section, it becomes an effective reinforcing material for the blade blade fixing plate 13c.

These machete blade fixing members 13d and blade blade fixing plates 1
3c are fixed to the sleeve 13a radially, for example, in three pieces at every 120 degrees.

Note that the blade blade 18 is attached to the blade blade fixing plate 13c with bolts 19a, 19a, nuts 19b, 19b, as shown in the figure.
, outer bolt hole 13f to be attached with washers 19c, 19c
, 13f are drilled. These outer bolt holes 13f
, inner bolt holes 13g and 13 drilled inward from 13f.
The blade blade 18 can also be attached to the blade 18.

Further, the machete blade fixing member 13d has a hexagonal hole 13h having the same shape as the head 21b of the bolt 21a that fixes the machete blade 2°,
A bolt hole 13i is bored.

Although the structure of the tilling blade holder 13A has been described above, the other tilling blade holder 13B is the same as the tilling blade holder 13A, and the tilling blade holder 13C has only one combination 13e.

A feather blade 19 and a machete blade 20 can be selectively attached to the combination 13e. For example, attach machete blades 20.20 to 2 out of 3 locations on the circumference, and attach blades 1 to the remaining 1 location.
9 is attached to obtain a tilling blade 13 as shown in FIG.

This tilling blade 13 is fitted onto the tilling shaft 12 as shown in FIG. 2, and locked with bolts 13j... however,
Only one hatchet blade 20 is fixed to the inner tilling blade 13C.

The operation of the rotary tiller constructed as described above will be described below.

From the power extraction shaft 5 of the tractor 1 to the propulsion shaft 7 and the gear case 1
7a, horizontal shaft 17b, sprocket 17C1 chain 1
The tilling shaft 12 is rotated via the 7d1 sprocket 17c.

First, the machete blades 20... till the field soil and break it into fine pieces, and then the blade blades 19 push out the crushed soil in the axial direction of the tilling shaft 12 and heap it up. When the tilling blades are arranged in multiple stages as shown in FIG. 2, the field soil is repeatedly plowed, crushed, and mulched, and sufficient fresh air is mixed into the soil.

Fig. 5 shows another arrangement example of Fig. 4, in which two of the three positions on the circumference are arranged.
Feather blades 19 and 19 are attached to one location, and a machete blade 20 is attached to the remaining location.

Furthermore, since the blade blades 19, 19 are bolted to the inner bolt holes 13g of the blade blade fixing plate, a turning circle C is drawn that is smaller in diameter than the turning circle B of the machete blade.

In this way, according to this embodiment, the machete blade and the feather blade can be freely attached and detached to change the number of blades in each, so it is possible to select the tilling blade that suits the condition of the field soil, the working period, and the working conditions. Can be configured.

Furthermore, since the blade blade fixing plate 13c and the machete blade fixing plate 13d are combined to increase bending rigidity, the blade blade fixing plate 1
There is no need to apply any special reinforcing place to 3c.

(Effects of the Invention) As described above, according to the present invention, a vine tillage blade holder is adopted in which the machete blade and the vane blade can be attached interchangeably and detachably, and the machete blade and the vane blade are attached in the rotational direction of the tillage shaft. With this arrangement, it is possible to perform ridge-building, which consists of plowing, crushing, damming, and mounding, in a single operation, thereby significantly shortening the work time.

Furthermore, it also has the effect of reducing the area occupied by the agricultural equipment storage area.

[Brief explanation of the drawing]

Fig. 1 is a side view of a tractor equipped with the rotary tillage device of the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, Fig. 3 is an exploded perspective view of the main part of Fig. 2, and Fig. 4 is a tiller blade arrangement diagram, and FIG. 5 is a different arrangement diagram from FIG. 4. 1...Tractor 5...Power take-off shaft O...
Rotary tillage device 3... Tilling blades 3A, 13B, 13C... Tilling blade holder 8... Vane plate 20... Hatchet blade patent

Claims (1)

[Scope of Claims] A rotary tiller comprising a tilling blade protruding from a tilling shaft driven by a power output shaft of a tractor via a tilling blade holder, wherein the tilling blade holder is a machete for tilling and crushing soil. A rotary tillage device characterized by having a structure in which a blade and a blade blade for making a soil bund and a soil mound are attached in a replaceable and detachable manner.