JPH044487Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grain missing alarm device for a seeding and fertilizing machine that forms a groove in a rice field and covers the soil by throwing seeds or granular fertilizer into the groove.

[Prior art]

For example, in a flooded direct sowing machine, multiple grooves are formed on the rice field as the machine moves, and seed rice whose surface has been coated with an oxygen source such as a culver agent is fed into these grooves using a feeding device. The structure is such that seeds are sown by covering them with soil.

With such a flooded direct sowing machine, the sown rice seeds are covered with soil, so it is not possible to confirm that the rice seeds have been sown on the field surface, making the operator anxious. For this reason, a sensor is provided to detect the seed rice discharged from the feeding device, and if the sensor does not detect the seed rice for a predetermined period of time, it is assumed that the seed rice is not released by the feeding device and grains are missing. Progress is being made in developing a missing grain warning device that will issue an alarm.

[Problem that the invention attempts to solve]

The lack of grain alarm system is designed to issue an alarm if the sensor does not detect rice seed and this condition continues for a predetermined period of time, but usually the power to the feeding device is turned off to prevent false alarms from being issued. It is configured to logically determine the operating status of the sowing clutch, which controls transmission and cutoff, and the row stop switch, which stops seeding in a predetermined row, as well as the sensor. However, with such a configuration, the circuit becomes extremely complex, and even if, for example, the sensor itself malfunctions and a false alarm is issued, it is difficult to determine whether the sensor is malfunctioning or there is a break in the circuit. However, there was a drawback that it was extremely time-consuming, such as the need to use a measuring device to find the location of the failure.

[Means for solving problems]

In a sowing or fertilizing machine that sows or fertilizes by discharging seeds or granular fertilizers using a plurality of dispensing devices, each passage of the seeds or granular fertilizers discharged from each dispensing device is detected and a signal is emitted. Each sensor is equipped with multiple passing indicators that flash each time a granule passes by a signal, and if any sensor does not detect seeds or granular fertilizer granules for a certain period of time, it will indicate a grain missing condition. A missing grain alarm device is provided which is provided with an alarm circuit that activates a missing grain indicator that clearly indicates a certain feeding device and also sounds an alarm.

〔Example〕

The present invention will be described in detail below based on drawings showing embodiments thereof. FIG. 1 is a left side view of a submerged direct seeding machine equipped with a missing grain warning device according to the present invention, and FIG. 2 is a plan view thereof. In the figure, D is a traveling aircraft which is equipped with an engine 11 at the front and a driver's seat 12 behind the engine 11, and a seeding device B is attached to a three-point link mechanism 13 at the rear of the traveling aircraft D. It is installed. The seeding device B includes a seeding unit A consisting of a float 20 equipped with a trenching body 21, a soil body 22, etc., and a feeding section 30 having a hopper 31, a feeding chamber 32, a shooter 34, etc. above the float 20. The assembly is integrally connected in the lateral direction, and the rear side of the connecting part 14 is attached to the seeding unit A in the center, and the front side thereof is attached to the three-point link mechanism 13 in the traveling body D. The connecting portion 14 utilizes a parallel link mechanism, so that the entire seeding device B can be moved in parallel to the left and right sides and fixed.

FIG. 3 is a side sectional view of one seeding unit shown together with the connecting portion 14 at the rear of the traveling body D, and FIG. 4 is an enlarged rear view thereof. Each seeding unit A has approximately the same structure, including a float 20 and a feeding device 30.
have. A support rod 19 is provided at the front of the connecting portion 14.
t is erected, and an operation box 19 is attached above the support rod 19t.

On the upper surface of the float 20 of each seeding unit A, a support stand 24 consisting of left and right side plates 24b whose front sides are respectively bent outward is installed, and on the upper front side of the support stand 24, The center and left side of the hollow connecting frame 15 extending in the left-right direction,
Each right side portion is attached, and therefore, the support stands 24 of each seeding unit A are integrally connected to the connection frame 15 at an appropriate distance apart. Connectors 16, 16 are attached to the connecting frame 15, which are spaced a suitable distance from the support stand 24 to the left and right sides of the central seeding unit A, respectively. The rear part of a connecting bracket 14i, which has a planar U-shape and is open at the rear, is pivotally supported on the rear side of the bracket 14 so as to be rotatable in the left-right direction.

The left and right sides of the float 20 are provided with notches 23 that open rearward and vertically, respectively, and the front of each notch 23 has a lower surface protruding downward from the lower surface of the float 20. A groove forming body 21 is attached, and above the rear part of the groove forming body 21,
Each lower end discharge port 34a of each drop passage 34d in the shooter 34, which will be described later, faces. Each groove forming body 21
A cultivating soil body 22 is attached to the rear center side of the float 20, respectively.

A feeding device 30 is attached to the upper side of each support stand 24. Each feeding device 30 has one hopper 31 on the upper side, a falling gutter 31a is formed in the lower front part of the hopper 31, and a feeding chamber 32 is provided behind the falling gutter 31a. A feed-out port 32a is formed on the rear surface of the feed-out chamber 32, and a drive shaft 33a whose axial direction is in the left-right direction is installed between the left and right side surfaces of the feed-out port 32a. is the feeding port 32a
It is loosely fitted so that its rear side faces the front. A large number of buckets 33b for scooping out the seed rice are attached to the left and right side peripheral surfaces of the feed roll 33, respectively. A locking piece 32c that locks an input port 34e of a shutter 34, which will be described later, extends in the front-rear direction on each of the left and right inner surfaces of the feeding chamber 32. It extends backwards.

The feeding roll 33 and the drive shaft 33a are connected or separated by a clutch mechanism, and an operating rod 33g of the clutch extends outward from the feeding chamber 32, and has a push pull at its end. One end of the wire 33h is locked. Then, by pulling the push-pull wire 33h, the feed roll 33 and the drive shaft 33a are separated, and the rotation of the drive shaft 33a is not transmitted to the feed roll 33. A strip stop switch 33i is provided below the end of the operating rod 33g, and when the operating lever 33g is rotated downward by pulling the push-pull wire 33h, the strip stop switch 33i is turned on.

The other end of each push-pull wire 33h is connected to the connecting portion 1
4, and is latched to an operating tool 19C, which will be described later, provided on the front surface of the operating box 19.

The upper part of the shutter 34 faces the rear side of the feeding chamber 32. The shooter 34 is made of a transparent material such as acrylic resin, has a bifurcated lower part, and has falling passages 34d that separate left and right on each left and right side, and a central part of the support tube 34 connecting the falling passages 34d. It is pivotally supported on a support stand 24 erected on the float 20 so as to be rotatable in the front-rear direction. Shooter 34
An input port 34e is formed in the upper front surface of the
When the shooter 34 is approximately vertical, the input port 3
4e is a feeding port 32 on the rear surface of the feeding chamber 32
The locking pieces abutted against each other and extending rearward from the left and right sides of the feed-out port 32a are configured to engage with the lower edge of the input port 34e.

A shock sensor 35 is provided on each left and right side of the support tube, and its detection surface 35a is connected to each fall passage 3.
It is installed so that it is inclined similarly to the inner surface of 4d and the inner surface and the detection surface coincide with each other. A piezoelectric element 35 is provided on the inner surface of the detection surface 35a of the impact sensor 35.
Further, in the case of the sensor 35, an amplifier 35l (see FIG. 5) for amplifying the output of the piezoelectric element 35k is provided.

Three sets of seeding units A having the same structure as above are arranged in parallel in the horizontal direction, and the drive shafts 33a of each feeding roll 33 are connected to each other, and the traveling machine D
The power is transmitted through the flexible transmission shaft 18 and a transmission provided on the left side of the right seeding unit A, and the seeding unit A is integrally rotated.

FIG. 5 is an electrical circuit diagram of the main part of the missing grain alarm device. In the figure, 61 is a battery provided in the traveling machine body D, and its positive electrode is provided outside the feeding chamber 32 of each seeding unit A in the seeding device B via a key switch 62 and a coupler 79, and is connected to the drive shaft 33a. One end of each row stopper switch 33i, which is turned on when the roll 33 is separated from the so-called row stopper, is operated to engage the sowing clutch by operating the operating lever 17 (see Fig. 2) to perform the sowing operation. Seeding switch 8, which is turned on when
One end of 1, astable multivibrator 6
8. Each alarm lamp 19a serves as a missing grain indicator to clearly indicate through each switch transistor 76 that a missing grain has occurred in the feeding device of any row of each seeding unit A and that the row is being stopped. The piezoelectric element 35k is connected to one buzzer 82 as an alarm, and on the other hand, the piezoelectric element 35k attached to the detection surface 35a of each shock sensor 35 provided in each seeding unit A described above is connected to one buzzer 82 as an alarm. Each time a contact occurs, a predetermined signal is output to an amplifier 35l, which amplifies the signal and applies it to a retriggerable one-shot multivibrator 63 and an LED (light emitting diode) 78, respectively. As will be described later, the LEDs 78 are arranged side by side on the upper surface of the operation box 19 in the left-right direction, and each LED functions as a passing indicator that blinks each time a particle passes.

Each multivibrator 63 is triggered when a high level signal is input within a predetermined time t, and outputs a high level signal for a predetermined time, and if a high level signal is not input within a predetermined time t, the multivibrator 63 outputs a high level signal for a predetermined time. The output becomes low level. This time t is set to be longer than the time interval T at which the feed roll 33 feeds out the seed rice. The outputs of the multivibrators 63 connected to the shock sensors 35 in one seeding unit A are applied to the input terminals of one OR gate 65 via inverters 74, respectively.

On the other hand, each feeding chamber 32 of each seeding unit A
Each strip stop switch 33i provided on the right outer surface of
are connected to one end of each of the three AND gates 64, and are connected to one end of each of three OR gates 75, which will be described later. The seeding switch 81 is also connected to a Schmitt trigger 67, and the output of the Schmitt trigger 67 is connected to the three AND gates 64.
and to each timing terminal CK of three latches 71, which will be described later. The output of each AND gate 64 is applied to a clear terminal C of a multivibrator 63 connected to each shock sensor 35 in one seeding unit A, respectively. When a high level signal is applied to the clear terminal C of the multivibrator 63,
Its output becomes high level. Each OR gate 65
The output of is applied to each input terminal D of three latches 71 operating on the down edge, and also to each input terminal of a three-input OR gate 69. The latch 71 stores the D input as the Q output at the falling timing of the timing terminal CK. The Q output of each latch 71 has three
is given to one end of each AND gate 72, and each
The output of the above-mentioned astable multivibrator 68 is given to the other end of the AND gate 72. The output of each AND gate 72 serves as one input for each of three OR gates 75, and each OR gate 75
The other input end is connected to each strip stop switch 33i, as described above. and OR gate 7
The output of 5 is the key switch 62 and each alarm lamp 1.
These terminals serve as respective inputs of switch transistors 76 interposed between the transistors 9a and one end of the transistors 9a. The other end of each alarm lamp 19a is connected to body ground.

On the other hand, the output of the OR gate 69 is the 3-input AND
It serves as one input of gate 73. Other inputs of the AND gate 73 are the output of the Schmitt trigger 67 connected to the seeding switch 81 and the output of the astable mono multivibrator 68. The output of the AND gate 73 is the key switch 62
This serves as an input to a switch transistor 77 interposed between the buzzer 82 and one end of the buzzer 82, and the other end of the buzzer 82 is connected to body ground.

FIG. 6 is a perspective view of the operation box 19.
The operation box 19 is provided on the upper part of the support rod 19t which is erected at the front part of the connecting part 14, and is inclined so that the front part is on the upper side. The above-mentioned electric circuit is installed inside the operation box 19, and three warning lamps 1 are installed on the top of the entire surface to notify that grains are missing and that the row is being tightened.
A feed roll 33 in each seeding unit A is provided below each warning lamp 19a.
Three operating tools 19c are arranged for engaging and disengaging the drive shaft 33a and the drive shaft 33a, respectively. Each operating tool 19
At c, one end of the push-pull wire 33h is locked, and the other end of the push-pull wire 33h is locked to the operating rod 33g of the clutch mechanism, which engages and disengages the feed-out roll 33 of each seeding unit A and the drive shaft 33a. The push-pull wire 33 is pulled by pulling the operating tool 19c.
h is pulled and the feeding roll 33 and drive shaft 33a
disengage with.

A long window 19d that is elongated in the left and right direction is provided at the rear of the upper surface of the operation box 19, that is, at a position where the operator seated in the driver's seat can see it. LED78 is
Each shock sensor 35 connected to each LED 78
are arranged in parallel in accordance with the arrangement order.

The aforementioned buzzer 82 is provided on one side of the front surface of the operation box 19.

[Effect]

In the flooded direct sowing machine configured as described above, when performing seeding work, the key switch 62 and the sowing clutch are engaged, the sowing switch 81 is turned on, and the upper input port 34e of the shutter 34 is connected to the locking piece 3.
2b, coated rice seeds are put into the hopper 31, and when the traveling body D is run and the float 5 slides on the rice field surface, the groove making body 21 forms a groove on the rice field surface. The seed rice that has fallen from the hopper 31 through the drop gutter 31a into the feeding chamber 32 is scooped up by each bucket 33b by the rotation of the feeding roll 33, and is thrown into the input port 34e of the shooter 34 from the feeding port 32a. It falls through each of the drop passages 34d of the shooter 34, is discharged from the lower end discharge port 34a into the premises above the rice field, and is covered with soil by the culturing soil body 22, completing the sowing.

On the other hand, the missing grain warning during seeding work will be explained. When all the row stop switches 33i are in the off state and the output of the AND gate 65 is at a low level, the respective drop passages 34 of each shooter 34
The rice seeds falling within d come into contact with the detection surface 35a of each impact sensor 35, and each piezoelectric element 35K provided on the inner surface outputs a high level signal when the seed rice comes into contact with the detection surface 35a. This high level signal is then amplified by the amplifier 35l and given to the retriggerable one-shot multivibrator 63, which lights up the LED 78. If the piezoelectric element 35K does not detect contact with the seed rice for a predetermined time t, and a high level signal is not input to the multivibrator 63 for a predetermined time t, the output of the mono multivibrator 63 becomes a low level, OR gate 65 output becomes high level, latch 71 output also becomes high level,
The AND gate 72 outputs an intermittent signal corresponding to the output of the Astable multivibrator 68, and causes the alarm lamp 19a corresponding to the seeding unit A associated with that row to blink. Again here AND gate 7
3 output also becomes high level intermittently corresponding to Astable multivibrator 68 output and buzzer 8
2 beeps intermittently. Further, the LED 78 is turned off because the seed rice does not come into contact with the impact sensor 35. Therefore, when the driver visually inspects the operation box 19, he or she will see that the warning lamp 19a is turned on and the LED 78 is turned off at the same time, thereby confirming that grain chipping has occurred.

In this way, each fall passage 34d of the shooter 34
When a grain is missing, the lamp 19a flashes and the buzzer 8
2 is making an intermittent sound, if the sowing clutch is disengaged and the sowing switch 81 is turned off,
Each latch 71 stores the input state at the time when the sowing switch 81 is turned off in the Q output, and the Q output of the latch 71 related to the falling passage 34d where grain loss has occurred maintains a high level state and blinks. The lamp 19a that is present will continue to be in that state. In this case, when the seeding switch 81 is turned off, the output of the AND gate 73 becomes low level and the buzzer 82 stops sounding.

Therefore, when the sowing clutch is in the disengaged state, the operator knows which seeding unit A has missing grains in the shutter 34, and can identify the cause of the missing grains, for example, clogging in the feeding chamber 32. etc., should be resolved. When the cause of the missing grain is removed and the sowing clutches are brought into engagement, the sowing switch 81 is turned on and each clutch 7 is turned on.
Timing terminal CK of No. 1 becomes high level, and its D input becomes Q output as it is, and shock sensor 3
5 detects contact with the seed rice, the alarm lamp 19a
goes out.

Furthermore, when the operating tool 19b is pulled to prohibit sowing in any of the sowing units, the feed roll 3
3 stops, and the row stop switch 33 is turned off.
i is turned on, the clear terminal C of the mono multivibrator 63 becomes high level, the output of the mono multivibrator 63 becomes high level, the output of the inverter 74 becomes low level, and by turning on the row stop switch 33i, the OR gate 75 Warning lamp 19 related to the line stop switch 33i via
a is in a lit state. That is, the alarm lamp 19a blinks when grains are missing when the row is not fastened, to notify that grains are missing, and when the row is fastened, the warning lamp 19a indicates the state of the row. It is designed to light up continuously to notify you. In addition, the buzzer 82 is also configured to sound intermittently at the same time to alert the user when grains are missing.

Therefore, even though the shock sensor 35 is normal and detects rice seed, the alarm lamp 19a lights up or the buzzer 82 sounds due to a failure in the electric circuit, alarm lamp 19a, buzzer 82, etc. In this case, because the seed rice is in contact with the impact sensor 35, the contact of the seed rice with the impact sensor 35 causes
LED 78 is lit. Therefore, when the operator looks back and looks at the operation box 19 while sitting in the driver's seat 12, the warning lamp 19a on the front of the box lights up or the buzzer 82 sounds.
The lighting of the LED 78 will be visually confirmed, and the alarm lamp 19a will be lit even though the shock sensor 35 has normally detected rice seeds, or the buzzer 82 will be lit.
This confirms that the electric circuit, alarm lamp 19a, buzzer 82, etc. is malfunctioning.

In addition, if an abnormality occurs in the impact sensor 35 and the warning lamp 19a and buzzer 82 are not activated even though the impact sensor 35 is in a missing grain state where no seed rice is detected, the LED 78 will be turned off. This confirms that an abnormality has occurred in the impact sensor 35.

〔effect〕

According to the present invention, it is possible to easily know that missing grains have occurred, to identify the corresponding feeding device in the missing grain state, and to easily confirm whether or not it is a false alarm.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention.
The figure is a left side view of the flooded direct seeding machine, the second figure is the same plan view,
Fig. 3 is a side sectional view of the sowing unit, Fig. 4 is a rear view of the same, Fig. 5 is an electrical circuit diagram of the main part of the missing grain alarm device,
FIG. 6 is a perspective view of the operation box. D... Traveling machine, A... Seeding unit, B...
Seeding device, 14... Connection section, 19... Operation box, 19a... Warning lamp, 20... Float,
21... Grooving body, 22... Cultivating soil body, 30... Feeding part, 31... Hopper, 33... Feeding roll,
34... Shooter, 35... Shock sensor, 78...
...LED, 82...buzzer.

Claims (1)

[Scope of utility model registration request] In a sowing or fertilizing machine that sows or fertilizes by discharging seeds or granular fertilizers using a plurality of dispensing devices, each passage of the seeds or granular fertilizers discharged from each dispensing device is detected and a signal is emitted. Each sensor is equipped with multiple passing indicators that flash each time a granule passes by a signal, and if any sensor does not detect seeds or granular fertilizer granules for a certain period of time, it will indicate a grain missing condition. A particle missing alarm device characterized by being provided with an alarm circuit that activates a particle missing indicator that clearly indicates a certain feeding device and also sounds an alarm.