JPH039603Y2 - - Google Patents

Description

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

For example, in a flooded direct sowing machine, seed grains whose surface is coated with an oxygen source such as Galvar agent are placed in the hopper, and the rice seeds are discharged from the lower end of the rice field onto the rice field and covered with soil for spot sowing. ing. Normally, it is important for seed rice to be sown accurately in a predetermined amount at predetermined intervals on the rice field for its growth, etc., but at the same time, it is also extremely important to prevent the occurrence of missing plants due to grain defects, etc., as this will affect the yield. has been done.

The present invention has been developed in view of the above circumstances, and its purpose is to use a device for sowing or fertilizing by discharging seeds or granular fertilizer in a hopper using a feeding device. It is equipped with a sensor that detects grains and an alarm circuit that issues an alarm when the grain detection interval by the sensor exceeds a _certain time _T. ) To provide a seeding or fertilizing device that can reliably prevent the occurrence of plant defects due to missing grains by delaying the activation state.

The present invention will be explained in detail below based on drawings showing an embodiment of a flooded direct seeding machine. FIG. 1 is a left side view of a submerged direct sowing machine equipped with a seeding device according to the present invention, and FIG. 2 is a plan view thereof. In the figure, D indicates this machine, and an engine 2 is mounted on the front part. Wheels 3, 3 are mounted on both sides behind the engine 2, and handles 4, 4 are extended on both sides of the rear side. ing. An operating column 41 equipped with a clutch lever and the like is provided between the handles 4, 4. Three sets of seeding devices A according to the present invention are attached to the rear of the machine D.

FIG. 3 is a rear view of one seeding device A, and FIG. 4 is a side sectional view thereof. 3 sets of seeding devices A, A, A
are provided on support stands 22, 22, 22 fixed to the tops of floats 5, 5, 5 of the same structure, which are arranged at the center, left, and right of the rear of the machine D, respectively, Each support stand 22 is connected by one connecting support rod 9 extending in the horizontal direction, and the connecting rod 9
is installed on the machine D.

Notches 6, 6 are formed on both rear sides of each float 5, and each float 5 is opened from below the front of each notch 6, 6.
Grooving bodies 7, 7 are respectively formed to protrude downward in the front-rear direction along the lower surface of the groove, and a culturing soil body 8 is installed at the rear side of each notch 6, respectively.

A hopper 11 having a lid 10 on the top is installed above the support stand 22 erected above each float 9. A falling gutter 12 is formed on the front side of the bottom plate 11a of the hopper 11.
A feeding chamber 13 is provided below 2. A feeding port 14 is opened at the rear of the feeding chamber 13, and a feeding roll 15 is mounted on a shaft within the feeding chamber 13 with its rear portion facing the feeding port 14. A large number of buckets 16, 16, .
The clutch knob 18 is configured to be operated by a clutch, and the amount of sowing can be adjusted using the clutch knob 18.

At the rear of the feeding chamber 13, there is a feeding port 14 at the upper end.
Bucket 16,1 of feed roll 15
A shutter 21 for receiving seeds from 6, . . . is installed vertically. The shooter 21 has a bifurcated structure in which the lower part is divided into left and right sides, respectively, and the lower end feeding ports 1, 1 are connected to both notches 6, 1 in the float 5, respectively.
It is facing the front upper part of 6.

An optical sensor 30 is disposed above the shooter 21, that is, below the feeding chamber 13, facing the area where the seed rice discharged from the feeding roll 15 falls.
FIG. 5 is a block diagram showing the optical sensor 30 and its signal processing system. They are arranged to face each other. Light emitting element 31
emits light in conjunction with the "on" operation of the driving clutch of the feed roll 15, and projects the light toward the light receiving element 32.
Each time the seed rice passes between the seed rice 2 and the rice seed 2, the light is blocked by this, and as a result, a signal is outputted from the light receiving element 32 in the form of a pulse. This light emitting element 3
The output signal from 2 is so configured that a waveform shaper 33 generates one pulse with a constant time width t and a steep rise and fall for each grain of rice, and this pulse signal is reset to a timer 34. Given as a pulse. The timer 34 normally outputs a low level signal, and when a preset time T has reached, outputs a high level signal to one terminal of the AND circuit 35.

36 is connected to the clutch that turns on and off the power to the feed roll 15, and is turned on when turned on;
This is an alarm switch that is turned off when the alarm switch 36 is off, and when the alarm switch 36 is off, a low level signal is sent to the on-delay circuit 36
7, a high level signal is output to the other terminal of the AND circuit ₃₅ after being delayed by a predetermined time t1. Further, when the alarm switch 36 is turned off, the input signal to the AND circuit 35 changes to a low level with a delay of a predetermined time _t2 by an off-delay circuit 38.

The AND circuit 35 is configured to emit a high level signal and sound the alarm 40 when both high level signals are input to its terminals, and the clutch for the feed roll 15 is turned on as described above. , the on-delay circuit 37 causes the alarm 40 to sound if the interval between drops of rice grains exceeds T time after ₁ hour has elapsed, and after the alarm 40 sounds, the off-delay circuit will not operate even if the clutch is turned off. 38, the ringing will continue for t ₂ hours, and then the ringing will stop. The delay time _t1 caused by the on-delay circuit 37 is from the time when the clutch for the feed roll 15 is turned on, until the seed rice is fed to the feed roll 1.
5 to the shutter 21 and reach the optical sensor 30. Therefore, even if the clutch for the feed roll 15 is turned on, it will take a predetermined amount of time for the seed rice to reach the optical sensor 30. Although it takes some time, the alarm 40 does not sound inconveniently during this time. If this time _t1 is set to the time from when the clutch is turned on until the seed rice falls onto the field, the machine D can be sown until the alarm circuit is activated. , it is possible to prevent the occurrence of stock shortages.

Furthermore, the delay time _t2 caused by the off-delay circuit 38 is determined by the fact that the alarm 40 starts sounding. is appropriately determined so as not to forget to supply seed rice or check the contents of the hopper 11.

6A to 6D are operation timing charts of the main switch (not shown), alarm switch 36, waveform shaper 33, and alarm 40 of the device D. 6th
Turn on the main switch as shown in FIG. 6A, turn on the clutch for the feed roll 15, and turn on the alarm switch 36 as shown in _FIG . As a result of a low level signal being output to the AND circuit 35 during this period, the time limit T set by the timer 34 is
Even after the period elapses, no signal is output from the AND circuit 35, and the alarm 40 does not sound. and t ₁
After a period of time has elapsed, the seed rice begins to pass between the optical sensors 30, and a pulse signal is output from the waveform shaper 33 to the timer 34 as a reset pulse, so the alarm 40 does not sound in the same way, and after that, When the falling interval of the seed rice exceeds T, a high level signal is input to the AND circuit 35, and the signal from the AND circuit 35 causes the alarm 40 to sound.

Note that when the alarm 40 starts sounding, the clutch of the feed roll 15 is operated to "off" and the alarm switch 3 is turned off.
Even if 6 is turned off, the off-delay circuit 38
As a result of the high level signal being input to the AND circuit 35 for t ₂ hours, the alarm 40 continues to ring for t ₂ hours and then stops.

In the flooded direct seeding machine constructed as described above, during operation, when each float 5 slides on the rice field surface, each groove-making body 7 forms a groove on the rice field as it slides on the rice field surface. On the other hand, coated rice seeds are falling into each feeding chamber 13 from the upper hopper 11, and the seed rice that has fallen into each bucket of feeding rolls 15 rotating as shown by arrow A in FIG. 16, and is directly thrown into the shooter 21 from the feeding port 14 as shown by the arrow B in the figure.

The seed rice put into the shooter 21 passes through an optical sensor 30 facing the area where it falls, and then passes through the shooter 21.
The soil is poured into a groove formed in the rice field from the left and right lower end ports 1, 1 through the notches 6, 6, and the culturing soil 8 covers the seed rice as the machine travels, completing the sowing.

In addition, in the above-mentioned embodiment, the alarm switch 3
Although the on/off operation of 6 has been described in conjunction with the clutch operation for turning on and off the power to the feed roll 15, it is of course possible to have a configuration in which the on/off operation of 6 is linked to other essential sowing operations.

In addition, although the above-mentioned example explained the sowing device attached to the flooded direct sowing machine, it is not limited to this, and can be applied to a sowing device for upland cultivation, a fertilization device for granular fertilizer, etc.

Further, in the above-described embodiment, a configuration using an optical sensor as a sensor for detecting rice seeds has been explained, but the present invention is not limited to this in any way, and it goes without saying that other sensors such as mechanical or electrical sensors may be used. .

As described in detail below, the present invention provides a circuit that issues an alarm when the falling of seeds or fertilizer discharged from the hopper by the feeding device is interrupted for a time T or more, from the time when the essential operation for sowing or fertilization is _activated. (t ₁ >
Since the operation state is delayed by t1, it is possible to detect whether or not seeds or fertilizers have fallen, and it is also possible to detect the presence or absence of falling seeds or fertilizers immediately after the start of sowing or fertilization work, that is, after the essential operation is activated _. During this period, it is possible to prevent the inconvenience of the alarm turning on when there are no seeds or fertilizers or only a small amount has fallen. Furthermore, for example, by stopping the machine from running when the alarm is inactive,
The present invention has excellent effects, such as preventing the occurrence of stock shortages, or preventing unnecessary sowing and fertilizing operations, allowing accurate and efficient sowing and fertilizing operations.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure shows a left side view of a submerged direct sowing machine equipped with a seeding device according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a rear view of the seeding device, FIG. teeth,
A rear view of the detection blade, a block diagram of the signal processing system, and FIG. 6 is a timing chart of the signal processing system. D...this machine, A...seeding device, 5...float, 7...grooving body, 8...cultivating soil body, 11...hopper, 13...feeding chamber, 15...feeding roll,
16...bucket, 21...shooter, 30...
Optical sensor, 31... Light emitting element, 32... Light receiving element, 34... Timer, 35... AND circuit, 36
...Alarm switch, 37...On-delay circuit,
38...Off-delay circuit, 40...Alarm device.

Claims (1)

[Scope of utility model registration request] A device for sowing or fertilizing by discharging seeds or granular fertilizer in a hopper by a feeding device includes a sensor that detects the released seeds or granular fertilizer, and an alarm is issued when the detection interval by the sensor is longer than a certain time T. An alarm circuit is provided, and the alarm circuit is activated for a predetermined period of time t ₁ from the time when the essential operation of sowing or fertilization is activated.
(t ₁ >T) A seeding or fertilizing device characterized in that it is brought into operation with a delay.