JPH022165Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for sowing seeds by discharging seeds in a hopper using a feeding device.

For example, in a flooded direct sowing machine, rice seeds whose surface has been coated with an oxygen source such as a calper agent are put into a hopper, and the seeds are released from the hopper by a feeding device and fall into a groove formed on the rice field. The structure is such that it can be dot-sown by pouring it in and covering it with soil. Normally, it is important for seed rice to be accurately sown in specified amounts at specified intervals on the rice field for its growth, etc. Also, it is extremely important to prevent the occurrence of missing plants due to grain defects, etc., as this will affect the yield. is important.

Conventionally, it has been considered to detect the falling of rice seeds released by a feeding device using a photoelectric element, etc., and to issue an alarm when the detection interval exceeds a predetermined value to notify the occurrence of missing grains. However, when coated rice seeds fall, there is a risk that the coating agent may peel off, and there is a risk that the photoelectric element may catch this peeled coating agent and cause false detection. In addition, there is a risk that the peeled coating agent will melt in water and adhere to the detection surface of the photoelectric element, contaminating the detection surface.Furthermore, since the coating agent detects the dropping of rice seeds, it is difficult to determine whether or not the seeds have been covered with soil accurately. It was undetectable.

The present invention was developed in view of the above circumstances, and uses a magnet to release seeds coated with a drug containing a magnetic substance from within the hopper, and detects the released seeds covered with soil using a magnetic sensor. It is an object of the present invention to provide a seeding device having a structure that immediately notifies you of the occurrence of missing grains.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on drawings showing embodiments thereof. FIG. 1 is a left side view of a riding flooded direct sowing machine with a seeding device according to the present invention attached to the rear, and FIG. 2 is a plan view thereof. In the figure, A is a steering vehicle, and a sowing unit B is connected to the rear side of the vehicle by a three-point link mechanism. A prime mover 4 is disposed on the upper front side of the body frame 1 of the traveling vehicle A, and a driver's seat 5 is disposed on the rear side. Further, in the lower part of the fuselage frame 1, front wheels 6 are arranged on both sides of the front and rear wheels 7 are arranged on both sides of the rear. power is transmitted to the seeding section B.

The seeding section B has four sets of seeding devices 3 arranged side by side in the horizontal direction. FIG. 3 is a rear view of one seeding device 3, and FIG. 4 is a side sectional view thereof. Each seeding device 3 has a support stand 9 erected on each float 8, and each support stand 9 is connected by a connecting rod 12.

On both rear sides of each float 8, notches 13, 13 that are open in the vertical and rearward directions are respectively formed, and from the front lower part of each notch 13, grooves are formed in the front-rear direction along the lower surface of each float 8. 14 are formed to protrude downward, respectively, and culture soil bodies 15, 15 are installed on the rear left and right sides of each notch 13, respectively. Further, a magnetic sensor 31 is attached to the rear part of one of the culturing soil bodies 15.

A hopper 11 having a lid 10 is installed above the support stand 9 erected above each float 8 . A falling gutter 22 is formed on the front side of the bottom plate 11a of the hopper 11, and a feeding chamber 23 is provided below the falling gutter 22. The feeding chamber 23
A feed-out port 24 is opened at the rear of the roller, and a feed-out roll 25 is mounted on a shaft within the feed-out chamber 23 so that its rear portion faces the feed-out port 24 . Electromagnets 2 are placed on the circumferential surface of the feed roll 25 at appropriate intervals.
6, 26... are buried, and the feeding roll 25
The driving force from the traveling vehicle A side is transmitted via a flexible electric shaft 19, and the clutch can be operated by a clutch knob 28.
Each electromagnet 26 is constructed using a brush, a slip ring, etc. so that when it is located in the feeding opening 24, electricity is cut off to each electromagnet 26.

At the rear of the feeding chamber 23, there is a feeding port 24 at the upper end.
A shutter 21 that receives seed rice from an electromagnet 26 of a feed roll 25 is vertically provided facing the tank.

At the upper end of the shooter 21, a lower part of a cutting board 29 is attached with the upper part facing the circumferential surface of the feed roll 25, and as will be described later, the seed rice adsorbed by each electromagnet 26 of the feed roll 25 is If the seed rice does not fall into the shooter 21, the seed rice comes into contact with the cutting board 29 and falls into the shooter 21.

The lower part of the shooter 21 has a bifurcated structure divided into left and right parts, each having a lower end input port 17,
17 faces above the front portions of both notches 13, 13 in the float 8.

FIG. 5 is an electrical circuit diagram of the main part of the proposed device. In the figure, 41 is a battery whose negative electrode body is grounded, and a key switch 42 is interposed in the positive electrode line. A voltage regulator 4 is installed on the positive electrode line.
3 is interposed, and the voltage set by the voltage regulator 43 is applied to each electromagnet 2 embedded in the circumferential surface of the feeding roll 25 via normally closed contacts 44, 44, respectively.
6, 26... Each normally closed contact 44 is constructed using a cam and a microswitch so as to open when the respective electromagnet 26 is located within the feeding opening 24. Further, the voltage setting dial 49 of the voltage regulator 43 is arranged on the operation column 51 in front of the driver's seat 5.If the voltage is increased, the attraction force of each electromagnet 26 is increased, and if the voltage is decreased, the attraction force of each electromagnet 26 is increased. The attractive force of the electromagnets 26 will decrease, and therefore the amount of rice seed attracted to each electromagnet 26 will be proportional to its voltage.

On the other hand, the positive electrode line of the battery 41 is connected to the magnetic sensor 31 attached to the rear part of the culturing soil body 15 described above, and the magnetic sensor 31 detects the magnetic material in the seed rice that has been coated with a drug containing a magnetic material. In this case, a high level signal is output, and the output signal is amplified by the amplifier 45 and sent to the waveform shaper 3.
3 is given. The magnetic sensor 31 outputs a high-level signal every time it passes over the seed rice covered with soil, so it emits a steep pulse-like signal.
The waveform shaper 33 is configured to emit one pulse signal of a constant time width using a steep pulse signal generated by the detection of rice seeds, and this pulse signal is given to the timer 34 as a reset pulse. The timer 34 normally outputs a low level signal, and if a high level signal is not provided within a preset time, a high level signal is output to the common terminal of the changeover switch 46. The changeover switch 46 is used to selectively change over the occurrence of missing grains etc. using either a lamp 47 or a buzzer 48, and one terminal on the switching side is connected to the lamp 4.
The other terminal is connected to the body ground via a buzzer 48.

In the flooded direct seeding machine configured as described above, when each float 8 slides on the rice field, each groove-making body 14 forms a groove on the rice field as it slides on the rice field. On the other hand, seed rice coated with ferrite is dropped into each feeding chamber 23 from the hopper 11 above, and the seed rice that has fallen is transferred to each feeding roll 25 rotating as shown by arrow A in FIG. It is attracted by the electromagnet 26 and transported as it is into the feeding opening 24. At this time, the outlet 2
The power supply to the electromagnet 26 located in the electromagnet 26 is cut off, and the seed rice adsorbed by the electromagnet 26 falls into the shooter 21. In this case, even if the seed rice remains attracted to the electromagnet 26 for some reason when the power to the electromagnet 26 is cut off, the seed rice comes into contact with the cutting board 29 and falls into the shutter 21. The seed rice put into the shooter 21 is thrown into the groove formed in the rice field through the notch 13 from the input ports 17, 17 at the lower left and right ends of the shooter 21, and the culturing soil body 15 collects the seed rice as the machine runs. Cover with soil. In this case, the amount of seeding is adjusted by the operation column 51.
The electromagnet 26 is controlled by the setting dial 49 arranged in the
This is done by adjusting the voltage applied to the electromagnet 26 to change the attraction force of the electromagnet 26.

Magnetic sensor 31 attached to the rear of the culturing soil body 15
When passing over the seed rice covered with soil, the waveform shaper 33 outputs a high level signal, and the waveform shaper 33 uses this high level signal to give a rectangular pulse signal to the timer 34 as a reset signal to set the output of the timer 34 to a low level. The lamp 47 or buzzer 48 selected by the changeover switch 46 is not operated.

However, when the seed rice detection interval of the magnetic sensor 31 becomes longer than a predetermined time due to missing grains, the output of the magnetic sensor 31 becomes low level, and the timer 34
As a result of inputting a low level signal to the timer 34 for a certain period of time, the output of the timer 34 becomes high level.
The lamp 47 or buzzer 48 operates. Therefore, the driver can easily know that a grain defect has occurred by turning on the lamp 47 or sounding the buzzer 48.

As described above, the seeding device of the present invention is a seeding device that releases seeds coated with a drug containing a magnetic substance onto the rice field using a feeding roll equipped with a magnet. a soil body that covers the seeds released into the classroom, and a magnetic sensor that detects the covered seeds;
Since the device is characterized in that it is equipped with an alarm means that issues an alarm when the interval between seeds detected by the magnetic sensor exceeds a certain value, it is possible to accurately capture seeds that have been actually sown and covered with soil. I can do it.

In the above-mentioned embodiment, since the seed rice is fed out using an electromagnet, the feeding amount can be electrically adjusted, and the adjustment can be performed very easily. In addition, since the seed rice is coated with ferrite, it is possible to replenish iron to aging rice fields (Akiotada).
Ferrite can also be used as an oxygen supplement, which improves the germination rate of seeds. Furthermore, if the already sown row is detected by a magnetic sensor and the machine is run following it, there is an advantage that a marker serving as a steering target is not required.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a side view of a riding flooded direct sowing machine equipped with the seeding device according to the present invention, Figure 2 is a plan view of the same, Figure 3 is a rear view of the seeding device according to the present invention, and Figure 4 is its side. The sectional view and FIG. 5 are essential electrical circuit diagrams. A... Traveling vehicle, B... Seeding section, 3... Seeding device, 8... Float, 11... Hopper, 14...
Grooving body, 15... Cultivating soil body, 23... Feeding chamber, 2
5... Feeding roll, 26... Electromagnet, 31...
Magnetic sensor, 47... lamp, 48... buzzer.

Claims (1)

[Scope of Claim for Utility Model Registration] In a seeding device that releases seeds coated with a drug containing a magnetic substance onto the rice field using a feed roll equipped with a magnet, a groove-forming body that forms grooves on the rice field; A cultivating soil body that covers the seeds released into the groove, a magnetic sensor that detects the covered seeds, and an alarm means that issues an alarm when the interval between seeds detected by the magnetic sensor exceeds a certain level. A seeding device comprising: