JPH0337375Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grain missing warning device for a seeding or fertilizing machine that discharges seeds or granular fertilizer in a hopper onto a field.

[Prior art]

For example, in a flooded direct seeding machine with a seeding device attached to the rear of the traveling machine, a groove is formed on the rice field as the machine moves, and seed rice whose surface has been coated with an oxygen source such as a culper agent is placed in this groove. The seeds are put into a shooter from a hopper using a feeding device, and are allowed to fall through the shooter to be discharged into a trench and covered with soil to sow the seeds. In such a flooded direct sowing machine, the seed rice was covered with soil after sowing, so it could not be confirmed that the rice had been sown. For this reason, a detector is installed to detect the seed rice falling inside the shooter, and if the detector detects the seed rice, it is determined that the seed rice has been released onto the field and is covered with soil, and vice versa. It was designed to issue an alarm if the container did not detect the dropping of rice seeds.

[Problem that the invention attempts to solve]

In a large-scale direct sowing machine, when the amount of rice seeds remaining in the hopper decreases, the density of rice seeds in the hopper decreases, and peeled coating agent accumulates in the hopper, so the amount of rice seeds discharged by the feeding device decreases. However, conventional warning devices do not issue an alarm when the amount of seed rice decreases, and sowing is performed at a low grain density per plant, which is not always appropriate considering the harvest amount after growth. It couldn't be called a warning.

[Means to solve the problem]

The present invention was developed in view of these circumstances, and is a particle missing detection system that calculates the amount of grains released within a predetermined time and issues an alarm if the amount of grains released is less than a preset reference value. The purpose is to provide alarm devices. The present invention provides a seeding or fertilizing machine that discharges seeds or granular fertilizer by a dispensing device, and a detector for the seeds or granular fertilizer discharged from the dispensing device;
a setter for setting a reference value for the amount of seeds or granular fertilizer to be released within a predetermined time; a means for determining the amount of particles to be released within a predetermined time based on the detection result of the detector; The apparatus is characterized by comprising means for operating an alarm when the amount of grains added is less than a reference value set by the setting device.

〔Example〕

Figure 1 is a left side view of a flooded direct seeding machine equipped with a missing grain warning device according to the present invention (hereinafter referred to as the proposed device);
FIG. 2 is a plan view of the same. In the figure, D has an engine 11 in the front and a driver's seat 1 behind it.
2, and a seeding device B is attached to a three-point link mechanism 13 at the rear of the traveling body D. The seeding device B includes a seeding unit A consisting of a float 20 equipped with a trenching body 21, a culturing soil body 22, etc., and a feeding section 30 having a hopper 31 above the float 20, a feeding chamber 32, a shutter 34, etc. 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, with a float 20 and a feeding section 30.
have. Three-point linkage mechanism 13 of traveling body D
A support rod 19t is erected at the rear, and an operation box 19 is attached above the support rod 19t. On the upper front side of the operation box 19, a warning lamp 67 is installed in each sowing unit A to notify that the amount of grains is decreasing.
Therefore, two alarms related to each seeding unit A are connected to one lamp 6.
Done at 7.

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. 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 doubling body 22 is attached to the rear center side of the float 20, respectively.

A feeding section 30 is attached to the upper side of each support stand 24. Each feeding section 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. Feeding chamber 32
A feed-out port 32a is formed on the rear surface, and a drive shaft 33a whose axial direction is the left-right direction is installed between the left and right side surfaces of the feed-out port 32a.
A feed roll 33 is loosely fitted into the feed roll 3a so that its rear portion faces the feed opening 32a. 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 32e 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 feed roll 33 and the drive shaft 33a are connected or separated by a clutch mechanism.

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 drop passages 34d that separate left and right on each side, and a support tube connecting the drop passages 34d in the center.
It is pivotally supported on a support stand 24 erected on the float 20 so as to be rotatable in the front-rear direction. An input port 34e is formed in the upper front surface of the shooter 34, and when the shooter 34 is made approximately vertical, the input port 34e
is configured to abut against the feed-out port 32a on the rear surface of the feed-out chamber 32, and locking pieces extending rearward from the left and right sides of the feed-out port 32a engage with the lower edge of the input port 34e. .

A shock sensor 35 is provided on each of the left and right sides of the support tube, and its detection surface is inclined in the same way as the inner surface of each drop passage 34d, and the inner surface and the detection surface 3
5a. A piezoelectric element is provided on the inner surface of the detection surface 35a of the impact sensor 35.

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 via the flexible transmission shaft 18 and a transmission 40 (both shown in FIG. 2) 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 present device in one seeding unit A. A piezoelectric transducer 35k is attached to the detection surface 35a of each shock sensor 35 disposed in the shooter 34 in the seeding unit A, and each piezoelectric transduction element 35k detects the seed paddy on the detection surface 35a of each shock sensor 35. Each time a collision occurs, a high level signal is output to each amplifier 35l, and the signal amplified by each amplifier 35l is provided to the counter 61, respectively. The output of one timer 62 is given to the reset terminal of each counter 61, and the timer 62 outputs a high level signal at predetermined time intervals to reset the calculation contents of each counter 61. Therefore, each counter 61
counts the signal output by each piezoelectric transducer 35k within a predetermined time, in other words, counts the number of rice seeds colliding with each detection surface 35a. The output of each counter 61 is given to a digital/analog converter (D/A converter) 63 to be converted into an analog signal, and is given to the - input terminal of each comparator 64 via each hold circuit 71. . The hold circuit 71 is designed to hold the output state of the D/A converter 63. The hold circuit 71 is supplied with the output of the timer 62, and is reset by the high level output of the timer 62. A potential set by one variable resistor 65 is applied to the +input terminal of each comparator 64, and each comparator 64 outputs a high-level signal when its +input potential becomes higher than its -input potential. Output. The output of each comparator 64 is OR
are given to each input terminal of the gate 66,
The output of the OR gate 66 is the switch transistor 6
9 and the switch transistor 6
9 turns on, an alarm lamp 67 lights up and an alarm buzzer 68 sounds. Each alarm lamp 67 is arranged in the operation box 19 as described above. An electrical circuit similar to this arrangement is provided for each seeding unit.

In the above-mentioned embodiment, the particle amount was determined by a counter, but the output of the amplifier 35l is applied to an integrating circuit using a capacitor, and the number of particles is determined from the integrated voltage. It may also be configured to discharge current.

[Effect]

When sowing is performed using the flooded direct sowing machine configured as described above, the upper input port 3 of the shooter 34 is used.
4e is locked to the locking piece 32b, the coated seed rice is put into the hopper 31,
The traveling body D is run to slide the float 5 on the rice field.

As a result, the groove forming body 21 forms a groove on the rice field,
From the hopper 31 through the falling gutter 31a, the feeding chamber 3
The seed rice that has fallen into the tank 2 is scooped up by each bucket 33b by the rotation of the feed roll 33, is thrown into the input port 34e of the shooter 34 from the feed opening 32a, and falls through each dropping passage 34d of the shooter 34. The soil is discharged from the lower end discharge port 34a into the trench on the rice field and covered with soil by the soil body 22 to complete the sowing.

The rice seeds falling in the respective falling passages 34d of the shutters 34 collide with the detection surface of the impact sensor 35, and the piezoelectric transducer 35k provided on the inner surface generates a high level signal due to the collision of the rice seeds with the detection surface 35a. Output. After this high-level signal is amplified by an amplifier 35l, it is given to a counter 61, which counts the number of high-level signals (i.e., the number of rice seeds) over a predetermined time measured by a timer 62. The converter 63 sets the voltage to a potential corresponding to the counted value, and the hold circuit 71 holds the voltage for a predetermined period of time defined by the timer 62.
It is applied to the − input terminal of comparator 64. On the other hand, a reference potential preset by a variable resistor 65 is applied to the + input terminal of the comparator 64.
Normally, when each bucket 33b of the feed roll 33 scoops out a predetermined amount of seed rice, the comparator 6
4's - input potential becomes higher than the + input potential,
The output of the comparator 64 is at a low level.

Therefore, when the amount of rice seeds in the hopper decreases, or when the coating agent peeled off from the rice seeds accumulates in the feeding chamber 32, each bucket 3 of the feeding rolls 33
The amount of rice seeds scooped out by 3b decreases, and therefore the amount of rice seeds that collides with the detection surface of the impact sensor 35 within a predetermined time period decreases, and the − input potential of the comparator 64 becomes lower than the + input potential, The output becomes high level, the alarm lamp 67 lights up, and the alarm buzzer 68 sounds. This allows the operator to know that the grain size of the seed rice to be sown is decreasing and take necessary measures.

〔effect〕

According to the present invention, if the amount of seed rice sown within a predetermined time is less than a preset value, a warning is issued, so there is no risk that the number of grains per plant will decrease, and therefore the yield will be reduced. There is no risk of poor growth due to nutritional imbalance. Furthermore, since the reference value of the amount of rice seeds to be sown can be easily changed using a variable resistor, control can be performed according to the size, type, etc. of the seeds.

In addition, in the case of a fertilizer applicator, an alarm is generated when the amount of fertilizer applied at one time is reduced, so that there is no possibility of imbalance in nutrients in each fertilizing area.

Furthermore, in the above-described embodiment, since one timer is provided for each seeding unit, economical efficiency is also improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention.
The figure is a left side view of a flooded direct seeding machine equipped with the proposed device.
2 is a plan view of the same, FIG. 3 is a side sectional view of the seeding unit, FIG. 4 is a rear view of the same, and FIG. 5 is an electric circuit diagram of the present device in one seeding unit. D... Traveling machine, A... Seeding unit, B... Seeding device, 19... Operation box, 20... Float, 21
... Grooving body, 22... Cultivating soil body, 30... Feeding part, 31
...Hopper, 32...Feeding chamber, 33...Feeding roll, 34...Shooter, 34d...Falling passage, 35...
Impact sensor, 65...variable resistor, 67...alarm lamp, 68...alarm buzzer.

Claims (1)

[Scope of utility model registration request] In a seeding or fertilizing machine that releases seeds or granular fertilizer by a feeding device, a detector for the seeds or granular fertilizer released from the feeding device and a reference value for the amount of seeds or granular fertilizer released within a predetermined time are set. a means for determining the amount of particles emitted within a predetermined time based on the detection result of the detector; and an alarm when the amount of particles ejected within the predetermined time is less than a reference value set by the setting device. 1. A missing grain warning device for a seeding or fertilizing machine, characterized by comprising means for operating the device.