JP3845730B2 - Rotary work machine for soil biological control - Google Patents

Description

  The present invention relates to a submerged biological extermination rotary working machine that extinguishes submerged organisms during plowing and plowing operations.

  Among the soil organisms that adversely affect the cultivation of crops, Sukuringogai (commonly known as jumbo tanishi) live in paddy fields, waterways, etc., and damage the rice seedlings immediately after planting or immediately after emergence by direct sowing. This has become a major problem, especially in the southwestern warm district. In order to prevent this damage, shallow water management of paddy fields has been introduced as an effective farming technique, but there is a problem that the removal effect is affected by the weather because it becomes difficult to respond when the rain increases. For this reason, fundamental density reduction by physical (mechanical) or chemical (pesticidal) extermination methods has been studied. However, from the environmental aspect, mechanical mollusc extermination methods have attracted attention as the most effective means. Has been.

  Therefore, the present applicant has already proposed a rotary working machine capable of performing effective mechanical removal simultaneously with the rotary tilling work in Patent Document 1 below. In this prior art, the tiller shaft of the rotary work machine is provided with a disinfecting pawl that is different from the tiller claw, and is located in the gap between the tiller claw and the tiller claw in parallel with the rotation surface of the tiller shaft. On the other hand, a straight blade-shaped disinfecting claw is attached in a spiral arrangement or in an equal arrangement.

JP 2002-34303 A

  According to this conventional technique, the removal claw is provided between the cultivation claws for the purpose of increasing the chance of mechanically hitting the scallop without increasing the drive torque of the tillage shaft. In the subsequent study, it was found that simply increasing the density of the nail by deploying the nail has a certain effect on the removal effect of the normal tillage nail, but there is a limit to improving the shelling rate. It was revealed.

  This point will be explained in more detail. In the conventional technology, the soil mass itself is fixed to soil organisms existing in the soil mass cultivated by the tilling nail even if the soil nail hits the soil nail. Therefore, there has been a problem that it is not possible to give a fatal blow to the soil organisms in it, and the extermination effect cannot be improved efficiently.

  An object of the present invention is to cope with such problems, and in a rotary working machine for controlling living organisms in soil, which is capable of controlling living organisms living in the soil during rotary operations, the present invention is effective. The purpose is to make it possible to improve the effective extermination effect.

The present invention that achieves such an object includes mounting a plurality of tilling claws extending radially from the circumference of the tilling shaft extending in the horizontal direction and curving at the tip end, and by rotating the tilling shaft, For the rotary working machine that performs the work, corresponding to each of the tilling claws, from the tilling claw mounting position to the curved side of the tilling claw, at a position that is approximately half the curving width of the tilling claw tip , forward in the rotational direction position or the juxtaposed to the mounting position position of the cultivating shaft than the attachment position, have a perpendicular cut surface on the cultivating shaft, consisting of a linear blade claw extending in the cultivating shaft and perpendicular linear extermination The nail for disinfection is arranged with respect to the tilling nail so that the nail is arranged and the disincision nail cuts along the longitudinal direction in the center of the clot formed by the tilling nail. And

  The inventor of the present application, as a result of diligent research to improve the above-described prior art, has revealed that soil organisms that are fixed in the soil of the field before the soil mass in which the soil organisms exist are cultivated by the tilling claws. As a result, it was found that the removal effect can be improved efficiently by giving a mechanical impact to the present invention, and the present invention has been completed.

  That is, the rotary working machine for soil biophysics having the above-described characteristics is applied to a soil block cut out from a field by a farming claw that is curved on the tip side, before one tilling piece cuts the soil block described above (that is, one soil claw). By cutting the nail for removal in the soil of the field before the plowing with the tilling nail), both the nail and the nail for removal will act on the organism fixed in the soil of the field. , Can be a deadly blow to the creatures that exist in the soil. As a result, in addition to the extermination effect obtained by the tilling nail itself of the rotary working machine, it is possible to surely eliminate the organisms present in the soil mass plowed by the tilling nail, so the soil organisms by rotary work The removal effect can be improved efficiently.

  Moreover, since the removal work of soil organisms can be performed in addition to the plowing / plowing work in the usual rotary work, the total work efficiency combining the rotary work and the removal work can be improved. Furthermore, since it can be configured by adding a part (disinfecting claw) to an existing rotary working machine, high spread can be obtained at low cost.

  More specifically, the above-mentioned extinguishing nail cuts the soil block cultivated with the tilling nail almost equally along the vertical direction of the tilling nail prior to the tilling, so that the organism present in the soil clump is removed. It becomes possible to give an effective blow. In other words, when considering the size of living organisms present in the soil mass, it is considered that harmful organisms have a size that is more than half the width of the soil mass (curved claw bending width). Therefore, by cutting the soil block in half vertically, it is possible to improve the probability of hitting the organisms present in the soil block, and to remarkably improve the extermination effect.

  The above-mentioned extinguishing nail is not particularly limited as long as it has a cut surface perpendicular to the tilling axis and can make an effective cut into the soil in the field. A straight blade claw that extends in a straight line perpendicular to the axis, or a bent claw that has a predetermined discharge angle and prevents biting of straw and weeds can be employed.

  The above-mentioned extinguishing claws do not have to be attached to all the tilling claws correspondingly, and a sufficient effect can be obtained by attaching to a part thereof. Preferably, an effective extermination effect can be obtained by attaching to 50 to 80% of the number of tilling claws.

  Embodiments of the present invention will be described below with reference to the drawings. Drawing 1 is an explanatory view explaining the structure of the rotary working machine for soil living thing control concerning an embodiment. In this rotary working machine, a tilling claw 2 having a predetermined rotation radius R is mounted on the shaft periphery of the tilling shaft 1 extending in the horizontal direction via a mounting holder 1a (only one of them is shown in the figure). And others are omitted.) This structure itself is the same as that of an ordinary rotary working machine, and a plurality of tilling claws 2 are mounted according to various arrangement forms. As the tilling nail 2, a general nail or the like can be adopted. The form should just be the form curved in the direction along the tilling axis | shaft 1 at the front end side extended radially from the axial periphery of the tilling axis | shaft 1 at least. By rotatively driving the tilling shaft 1 in the direction of the arrow, the tilling claw 2 acts on the soil in the field to perform tilling that cuts out a soil block of a predetermined shape.

  And in the rotary working machine which concerns on embodiment of this invention, the nail | claw 3 for extermination is arrange | positioned corresponding to each of the tilling nail | claw 2. FIG. The disinfecting claw 3 may be mounted on the mounting holder 1b mounted on the tilling shaft 1 in the same manner as the tilling claw 2, or mounted on the mounting holder 1a of the tilling claw 2 described above via an appropriate mounting member. Also good. Moreover, although this nail | claw 3 for extermination may be deployed with respect to all the tilling claws 2, an effective extermination effect is acquired by deploying with respect to 50 to 80% of the whole number of tilling claws.

  The form of the disinfecting nail 3 is not limited as long as it has at least a cut surface perpendicular to the tilling shaft 1, and an effective disinfecting effect can be obtained by forming the blade portion 3a on the edge on the front side in the rotation direction. As an example of the form of the disinfecting claw 3, a straight blade claw extending linearly perpendicular to the tilling shaft 1 as shown, or a bent claw having a predetermined discharge angle can be employed. In any form, by setting the length so as to be mounted within the rotation radius R of the tillage claw 2, the existing rotary working machine can be applied without changing the design.

  The feature of the rotary working machine for soil biological extermination according to the embodiment of the present invention lies in the arrangement relationship between the tilling claws 2 and the extinguishing claws 3 described above. The extinguishing claws 3 are arranged at a forward position in the rotational direction by a predetermined angle θ with respect to the corresponding tilling claws 2 so that the corresponding tilling claws 2 are cut into the soil before acting on the soil in the field. (See (a) of the same figure). This angle θ may be 0 ° or more and not more than a set angle determined by the arrangement state of the tilling claws 2. In the case of using a nail as the tilling nail 2 and a straight blade nail as the removal nail 3 as in the illustrated example, even if the removal nail 3 is arranged at a position juxtaposed with the mounting position of the cultivation nail 2 Good.

  The distance between the tilling claw 2 and the extinguishing nail 3 may be a width W1 within the curved width W of the tilling claw 2, as shown in FIG. W1 is preferably approximately half of the curved width W.

  The operation of the rotary working machine for controlling soil organisms having such a structure will be described with reference to FIGS. According to this, during the rotary work, a soil mass M having a vertical length corresponding to the arrangement pitch P of the tilling claws 2 and a lateral width W ′ corresponding to the curved width W of the tilling claws 2 is formed. On the other hand, before the soil mass M is cut out by the tilling nail 2, the cutting M1 by the extermination nail 3 is inserted. In other words, according to the soil biological biological extermination rotary working machine according to this embodiment, the width W ′ / 2 × the vertical length P of the soil in the field fixed by the tilling claws 2 and the extinguishing claws 3. Cuts can be made in the parcel. FIG. 3 shows a clot formation state when disinfecting claws 3 are arranged for a plurality of tilling claws 2 arranged at a predetermined pitch, and all the clots M are cut along the vertical direction thereof. M1 can be entered.

  According to this, when normal tilling claws 2 (seed claws) are arranged at a pitch of 32 mm with a width of 1500 mm and a rotary work is performed at a working speed of 1.5 km / h and a rotary speed of 250 rpm, Although the size is approximately 50 mm wide × 100 mm long, in an optimal embodiment according to the present invention, the width of the mass can be approximately 25 mm (50 mm × 1/2). As a result, it is theoretically possible to give a blow by the tilling claws 2 or the extinguishing claws 3 in the soil of the field to a scallop with a shell height (shell size) exceeding 25 mm.

FIG. 4 shows a case where only the tilling claws 2 are used (I), a case where the tilling pitch is halved (by increasing the tilling claws 2 or the like) (II), a case where the tilling claws 2 and the above-mentioned extinguishing claws 3 are used (this book) Embodiments of the invention:
It is the graph which divided | segmented into III) and calculated | required the probability that a spider apple guy will contact the cultivation nail 2 or the nail | claw 3 for extermination. This is because it is known that scallop apple oysters are submerged in a shallow part of the soil, and the probability that the scallop apple mussels and the cultivating claw 2 or the disinfecting claw 3 come into contact with each other is assumed to be distributed on the field surface. It is calculated every time. As is apparent from this, even if the tillage pitch is halved, the effect is small, but in the case of the embodiment of the present invention, the contact probability can be remarkably improved.

  That is, according to the embodiment of the present invention, it is possible to give a mechanical hit to a living organism fixed in the soil of a field with a very high probability. As a result, the extermination effect can be remarkably improved as compared with the case where the extinguishing claws are simply arranged between the tilling claws as in the prior art.

  That is, according to the embodiment of the present invention, it is possible to effectively improve the extermination effect in the submerged organism extermination rotary working machine capable of carrying out extermination of living organisms living in the soil during the rotary work.

It is explanatory drawing which shows the structure of the rotary working machine for soil biological extermination which concerns on embodiment of this invention. It is explanatory drawing which shows the effect | action of the rotary working machine for soil biological extermination which concerns on embodiment of this invention. It is explanatory drawing which shows the effect | action (state of the earth lump formed) of the rotary working machine for soil biological extermination which concerns on embodiment of this invention. It is a graph which shows the effect of the rotary working machine for soil organism extermination concerning the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cultivation shaft 1a, 1a Mounting holder 2 Cultivation claw 3 Disinfecting claw M Clot M1 Cut

Claims (1)

For a rotary work machine that is attached to a plurality of tilling claws extending radially from the circumference of the tilling shaft extending in the horizontal direction and curving on the tip side, and performing tilling / pricking work by rotating the tilling shaft,
Corresponding to each of the tillage claws, the position of the tillage claw on the curved side of the tillage claw is approximately half the curved width of the tillage claw tip, and the rotation axis of the tillage shaft is ahead of the wearing position. position or at a position juxtaposed to the mounting position, have a perpendicular cut surface to the tilling shaft, and deploying removal claw consisting of a straight blade claw extending in the cultivating shaft and vertically straight,
Extermination of soil organisms, wherein the disinfecting claw is arranged with respect to the tilling nail so that the disinfecting nail makes a cut along a longitudinal direction of a clot formed by the tilling nail Rotary work machine.

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