JPH0455641B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a field deep groove cutting machine.

[Problems to be solved by conventional technology and invention]

Traditionally, in the case of rice fields, for example, due to the mechanization of agricultural work in recent years, various large agricultural machines such as tractors and combines have been driven into the fields.
The rice field is compacted by the heavy weight of these various agricultural machines, and as a result, the field is compacted to a depth of 20 to 30 m
A hard soil area of up to 1 cm is formed, and the plowing depth using a tractor is about 10 to 15 cm, so a deep hard soil layer that cannot be tilled is formed below the cultivated soil layer.

The existence of this deep hard soil layer not only prevents the roots of paddy rice from growing deep, but also causes the irrigation and drainage functions to fail, even though the culvert is buried approximately 1 m below the rice field surface. The planned and systematic water supply, capture, and drainage of excess water, which are essential for the smooth growth of rice, cannot be carried out, which deteriorates the soil and inhibits the growth of paddy rice. are doing.

[Means for solving problems]

The purpose of the present invention is to solve these problems, and its gist is to connect a machine frame to a traveling machine body by a coupling mechanism, and to install a groove-making rotor that cuts a slightly wide upper groove in the machine frame. and a groove cutting rotor for cutting a narrow lower groove at the rear in the direction of movement of the groove cutting rotor, and the groove cutting rotor cuts the lower groove in the deep hard soil layer of the field. The field deep groove cutting machine is characterized by:

[Effect]

When the traveling machine travels, the groove cutting rotor cuts a slightly wide upper groove in the field, and then the groove cutting rotor cuts a narrow lower groove in the deep hard soil layer of the field.

〔Example〕

1 to 5 show a preferred embodiment of the present invention, in which reference numeral 1 denotes a traveling machine body, which is a tractor, and a machine frame 3 is connected to a three-point link type coupling mechanism 2 at the rear thereof.

In this connection mechanism 2, there are lower links 4 on both left and right sides of the lower part of the traveling body 1 and an upper link 5 in the middle.
, a swinging arm 6 on both left and right sides of the upper part, and a lifting link 7 that connects the swinging arm 6 and the middle of the lower link 4, and the lower link 4 and the upper link 5.
The machine frame 3 is supported at three points at the tip of the machine frame 3, and the machine frame 3 can be moved up and down by the rocking motion of the swing arm 6 using hydraulic pressure.

A gear case 8 is attached to the machine frame 3, and its input shaft 9 and a power output shaft 10 of the tractor are connected by a flexible joint 11.

In addition, a groove rotor 12 is attached to the lower front side frame of the machine frame 3.
is installed horizontally, and the groove-making rotor 12 consists of a rotor shaft 13, a rotor body 14, and a naginata-shaped groove-making blade 15.
The rotor shaft 13 is rotated by a front shaft 16 of the gear case 8 via a chain 17, and four pairs of groove cutting blades 15 are provided protruding at a predetermined pitch, and each pair cuts the upper groove 18. to be accomplished.

The depth of the upper groove 18 of this field 19 is approximately 15 cm, which is the plowing depth of the tractor.

Further, four support rods 20 are vertically installed at the rear of the machine frame 3, and a groove cutting rotor 21 is installed horizontally at the bottom of each support rod 20.
2, a rotor body 23, and a pair of naginata-shaped groove cutting blades 2.
4, whose rotor shaft 22 is rotated from the rear shaft 25 of the gear case 8 via a chain 26,
The lower groove 27 is cut with each pair of groove cutting blades 24.

The depth of this lower groove 27 is approximately 15 cm, which is the thickness of the deep hard soil layer 28. 31 is an intermediate shaft.

Further, the width of the upper groove 18 in this embodiment is approximately 50 mm,
The width of the lower groove 27 is approximately 15 mm.

Since the present embodiment has the above configuration, when the traveling body 1 travels, the groove-making rotor 12 cuts the upper groove 18 and the groove-cutting rotor 21 cuts the lower groove 27.

At this time, the groove cutting rotor 12 cuts an upper groove 27 in the cultivated soil layer 29 which is plowed deeply by the tractor, and the groove cutting rotor 12
1, a lower groove 27 is cut in the deep hard soil layer 28 at the bottom, and the deep hard soil layer 28 is torn by the lower groove 27, and the subsoil layer 30 and the cultivated soil layer 29 below the deep hard soil layer 28 are cut.
This allows for so-called deep cultivation work.

Therefore, the adverse effects caused by the presence of the deep hard soil layer 28 can be suppressed.

In addition, since the wide upper groove 18 is cut, the groove cutting rotor 21 can be placed in a lower position as much as possible, the length of the groove cutting blade 24 of the groove cutting rotor 21 can be shortened, and the cutting depth can be reduced. Since the length is short, the cutting resistance of the groove cutting rotor 21 can be reduced even in the hard deep soil layer 28.

Note that the shapes, quantities, etc. of the groove-making blade 15 and the groove-cutting blade 24 are not limited to those in the embodiment, and may also be applied to the groove-making rotor 1.
The support structure for the two-groove rotor 12 and the like is designed with appropriate changes.

〔Effect of the invention〕

As described above, in the present invention, the slightly wide upper groove is cut by the groove cutting rotor, and the narrow lower groove is cut by the groove cutting rotor, so it is possible to easily cut grooves in deep hard soil layers. The harmful effects of deep hard soil layers can be suppressed and work efficiency can be improved.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view explaining the whole, FIG. 2 is a plan view explaining the same, FIG. 3 is a sectional view of a soil layer, and FIGS. be. DESCRIPTION OF SYMBOLS 1... Traveling machine body, 2... Connection mechanism, 3... Machine frame, 12... Grooving rotor, 18... Upper groove, 19
...field, 21...grooving rotor, 27...lower groove, 28...deep hard soil layer.

Claims (1)

[Claims] 1 A machine frame is connected to the traveling machine body by a coupling mechanism, a groove-making rotor for cutting a slightly wide upper groove is provided on the machine frame, and a narrow lower groove is cut at the rear of the groove-making rotor in the direction of movement. 1. A field deep trench cutting machine, comprising: a trench cutting rotor configured to cut a lower trench in a deep hard soil layer in a field with the trench cutting rotor.