JP2585201B2 - Alarm device for fertilizer and seeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a granular fertilizer in a hopper,
The present invention relates to an alarm device for a fertilizer and a sowing machine that releases seeds to a field.

[0002]

2. Description of the Related Art For example, in a fertilizer applicator, a groove is formed on a field surface as the machine body travels, and granular fertilizer in a hopper is fed into a fertilizer hose by a feeding device in the groove, and the fertilizer is fed into the hose. It is configured to drop along the provided discharge spring rod and discharge into a groove formed on the field surface.

[0003]

Since the lower end discharge port of the fertilizer hose is close to the field surface, there is a possibility that the discharge port may be clogged with mud or the like and the fertilizer may not be discharged to the field surface. The present invention has been made in view of such circumstances, and an object of the present invention is to provide an alarm device that can detect when a flow path of granular fertilizer and seeds is clogged. I have.

[0004]

SUMMARY OF THE INVENTION An alarm device according to the present invention is a fertilizer that releases granular fertilizer and seeds to a field, a seeding machine, and a fertilizer that creates a groove into which granular fertilizer and seeds are to be dropped. The fertilizer is provided on the side, guides the granular fertilizer and seeds to be dropped into the groove, forms a U-shape having an open rear in plan view, and a gutter used as one electrode, and The other electrode which is attached at a distance from the gutter surface with an insulator, and a detection circuit which detects a change in voltage between the electrodes due to the attachment of granular fertilizer, seeds or mud between them. It is characterized by.

[0005]

According to the present invention, a granular fertilizer, a fertilizer, is provided between one electrode, which is a gutter, and the other electrode attached thereto.
When the seed or mud adheres, the two are connected with a certain resistance value, the voltage between the electrodes decreases, and the adhesion is detected by the detection circuit. The adhesion is a stage of clogging or a precursor stage thereof in the gutter portion. By detecting this voltage drop, clogging can be detected.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a left side view showing a state in which a side-strip fertilizer is attached to a planting section of a riding rice transplanter. In the figure, A is a traveling body, and a planting part B is attached to a three-point link mechanism 7 at the rear.
Is installed. The planting section B has a seedling mounting table 8 on the float 6.
Is installed, and the power from the traveling machine body A is transmitted to the planting claws 10 via the transmission mechanism in the transmission case 9. A side-strip fertilizer 11 is mounted at the rear of the planting section.

FIG. 2 is a left side view of the side fertilizer. The side-strip fertilizer applicator 11 is provided with a front portion of a roll case 21 for each strip mounted on a support frame 19 provided on an upper end of a support (not shown) provided on the upper surface of the transmission case 9. B is attached. A hopper 20 is provided above the roll case 21, and a fertilizer hose 4 is attached below the roll case 21. A gutter portion 2 is formed at a lower end portion of the fertilizing hose 4, and a groove forming body 1 is provided at a front side thereof.

FIG. 3 is a side sectional view of the roll case 21. A drive shaft 28 of the planting claw 10 penetrates the upper part of the roll case 21 in the left-right direction, and the rotation of the planting claw drive shaft 28 rotates vertically via a bevel gear.
Has been transmitted to. A feeding roll 23 is mounted below the roll drive shaft 29, and the feeding roll 23 is sandwiched between a roll upper lid 22 and a roll lower lid 24 locked to a roll case 21, and the feeding roll 23 is a roll. Upper lid 22 and lower lid
It rotates while sliding on 24.

An opening 25 is formed at the rear of the upper cover 22, and an opening 27 is also formed at the front of the lower cover 24. A large number of through-holes 26 are formed in the periphery of the feeding roll 26 at an appropriate distance from each other.
The roll is moved by 180 degrees with the rotation of the feeding roll 23 and dropped into the fertilizing hose 4 through the opening 27 at the front of the roll lower lid 24. In the center of the lower surface of the roll lower lid 24,
The upper end of the discharge spring rod 3 is attached, and the discharge spring rod 3 is located in the fertilizer hose 4, extends from the lower end discharge port of the fertilizer hose 4 into the gutter part 2, and reaches the lower part. ing.

FIG. 4 is a side sectional view of the lower end portion of the fertilizing hose 4, and FIG. 5 is a plan view of the groove forming member 1 and the gutter portion 2. The lower end of the fertilizer hose 4 is substantially vertical, and a gutter 2 having a U-shape in plan view and having an open rear portion and having a function as one electrode is continuously provided, and penetrates the fertilizer hose 4. The lower part of the discharged spring rod 3 is located in the lower part of the gutter part 2, and the granular fertilizer dropped into the fertilizing hose 4 is guided by the discharge spring rod 3 and falls into the groove from the lower end discharge port of the gutter part 2. Is done. Gutter part 2
A groove forming body 1 is attached to the front side of the vehicle, and the groove forming body 1 forms a groove on a field surface as the traveling machine body advances.

On the rear upper side of the right side surface of the gutter portion 2, a rod-shaped metal detector 5 whose base end is insulated from the gutter portion 2 by an insulator 5a and functions as the other electrode is provided. And is arranged substantially horizontally so that the tip thereof is located at the center portion. A predetermined voltage is applied to the detector 5, and the gutter 2 is body-grounded. A delivery mechanism such as the delivery roll 21 and the fertilizing hose 4 similar to the above configuration is provided for each section (four sections in this embodiment).

FIG. 6 is a main part electric circuit diagram of the device of the present invention. The four detectors 5 provided for each row are collectively connected to a positive electrode line of the battery via a resistor 12 and connected to one end of a comparator 15. The gutter 2 to which each detector 5 is attached is connected to the body ground. Therefore, when mud, fertilizer, or the like is clogged between any of the detectors 5 and the gutter 2, the detector 5 and the gutter 2 are connected via the resistance, and the detector 5 is connected to the body ground. As a result, the negative input potential of the comparator 15 decreases.

The + input terminal of the comparator 15 is connected to a connection point between the resistor 13 and the variable resistor 14, and the + input potential is determined by the resistance value of the variable resistor 14, and by changing the resistance value, The + input potential is changed. Comparator 15 outputs a high level signal when the + input potential is higher than the-input potential. The output of the comparator 15 is given to the switch transistor 16, and the switch transistor 16 is turned on by the high level output of the comparator 15, and the alarm lamp 17 is turned on.

The fertilizer application by the fertilizer applied as described above is performed as follows. Along with the traveling of the traveling aircraft A,
The groove forming body 1 forms a groove on the rice field while the roll drive shaft 29
The power of the traveling body A is transmitted and rotated. Therefore, the granular fertilizer that has fallen into the roll case 21 from the hopper 20 is fed out from the opening 25 of the roll top lid 22 through the through-hole of the roll 23.
26, is moved 180 degrees by the rotation of the feeding roll 23, falls into the fertilizer hose 4 through the opening 27 of the roll lower lid 24, is guided by the discharge spring rod 3, and is discharged from the lower end discharge portion of the fertilizer hose 4. Through the gutter part 2, it is discharged and dropped into the groove formed by the groove forming body 1.

When mud, fertilizer, or the like adheres to the gutter 2, the detector 5 to which the voltage is applied and the gutter 2 connected to the body ground are short-circuited by mud, fertilizer, or the like. , The negative input potential of the comparator 15 decreases to become lower than the positive input potential, the output of the comparator 15 becomes high level, and the alarm lamp 17 is turned on. Thus, the worker knows that the gutter portion 2 is clogged, and takes necessary measures. In such an embodiment, since the reference value of the comparator is changed by changing the set value of the variable resistance, the optimum reference value can be selected and set according to the fertilization, the number of seeds, the field conditions, and the type of fertilizer. . For example, when the number of strips is large, when there is a lot of water in the field, when the fertilizer is likely to absorb moisture and the conductivity is high, etc. What is necessary is just to make a value small and to set a low reference value. Further, the number of detection circuits may be one irrespective of the number of rows, and the detection level may be changed by changing the setting of one variable resistor, so that an effect excellent in economy and operability is obtained.

[0016]

According to the present invention as described above, since the back side of the gutter is open, clogging hardly occurs. That is, even if clogging occurs once, the clogging is removed and discharged from an open portion. The gutter part having such a function is used as one electrode for detecting clogging or for detecting the adhesion of granular fertilizer, seeds, and mud, which causes the clogging, and the other electrode is connected to the gutter part with an insulator. Since the parts are mounted at a distance from the surface, the number of parts can be reduced, and the occurrence of clogging can be easily detected without any movable parts, and the durability is high. Furthermore, the inconvenience of mistaking small amounts of mud or the like as clogging is eliminated.

[Brief description of the drawings]

FIG. 1 is a left side view of a rice transplanter equipped with a side fertilizer.

FIG. 2 is a left side view of the side-strip fertilizer applicator.

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a sectional view of a lower part of a fertilizer hose.

FIG. 5 is a plan view of a lower part of a fertilizer hose.

FIG. 6 is a main part electric circuit diagram of the device of the present invention.

[Explanation of symbols]

 A Running machine B Planting part 1 Groove body 2 Gutter part 3 Gutter part 3 Discharge spring rod 4 Fertilizer hose 5 Detector 5a Insulator 11 Lateral fertilizer 14 Variable resistance 15 Comparator 17 Alarm lamp 20 Hopper 21 Roll case 23 Feeding roll

Claims (1)

(57) [Claims] A fertilizer for releasing granular fertilizer and seeds to a field;
In the seeding machine, the granular fertilizer and the seeds are provided on the rear side of the groove forming body for creating a groove into which the seeds are to be dropped. The seed fertilizer and the seeds to be dropped into the grooves are guided, and the rear is opened in plan view. A U-shaped gutter used as one electrode, the other electrode attached to the gutter at a distance from the gutter surface with this and an insulator, and granular fertilizer and seeds between them Or a detection circuit for detecting a change in inter-electrode voltage due to adhesion of mud.