JPH0444007Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is applicable to side row fertilizer applicators and flooded direct seeding
This relates to a device that detects clogging in the part where seeds or fertilizers fall and notifies the operator.

(b) Conventional technology Traditionally, in side row fertilizer applicators and flooded direct seeding machines, a reflective surface for ejected particles has been installed at the lower end of the guide pipe in order to monitor whether seeds or fertilizers have stopped falling due to a malfunction in the feeding device located at the bottom of the tank. The technology of providing a clogging sensor is known.

For example, there is a technique described in Japanese Patent Application Laid-Open No. 61-88805.

Even though the feeding device was operating normally and feeding and dropping seeds and fertilizers, we were unable to detect a situation where the seeds and fertilizers and mud were kneaded together and solidified, blocking the inside of the guide plate. be.

(c) Problems that the invention aims to solve The purpose of the invention is that the seeds and fertilizers that are dropped from the tank and feeding device into the guide plate through the guide pipe are mixed with the mud in the guide plate and solidified, so that the seeds and fertilizer are In order not to close off each part of the plate or obstruct the rotation of the scraping spring provided to rotate for scraping inside the guide plate.
In particular, a sensor electrode is provided near the outlet of the fertilizer that comes out of the guide pipe and is discharged into the guide plate.

This prevents sowing/fertilization due to clogging of seeds and fertilizers.
This prevents interruptions in fertilization work.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A guide plate 12 is disposed at the rear of the furrower 13, and a certain amount of seeds or fertilizer fed out by a feeding device 34 is dropped into the guide plate 12. The sensor electrode 2 is arranged to protrude with an elastic body 42 interposed therebetween,
With the sensor electrode 2 as one pole, the earth 11
The guide plate 12 itself connected to the guide plate 12 is used as the other pole, and the degree of clogging of the guide plate 12 with mud is detected by the change in resistance value between the sensor electrode 2 and the guide plate 12.

(e) Embodiments and operations The purpose and structure of the present invention are as described above.Next, the structure of the embodiment shown in the attached drawings and the operation of the invention will be explained.

The present invention has almost the same configuration as a fertilizer, and can also be implemented in a flooded direct sowing machine that performs seeding work. However, since the fertilizer and sowing device have almost the same configuration, this invention is suitable for rice planting. This is an explanation of the side row fertilizer applicator attached to the machine.

Figure 1 is a side view of the side-row fertilization machine attached to a riding rice transplanter, Figure 2 is a side view of the side-row fertilization unit installed next to the planting part of the rice transplanter, and Figure 3 is a side view of the side-row fertilization unit attached to the rice transplanter. FIG. 4 is a cross-sectional plan view of the guide plate and sensor electrode portion, FIG. 5 is a cross-sectional plan view of the guide plate 12 filled with fertilizer, and FIG. A plan view of the instrument panel B of the dart board,
Fig. 7 is a perspective view of the fertilization control box 15, Fig. 8 is a circuit diagram showing the display circuit of the instrument panel when only the rice transplanter is installed without the side-row fertilization machine, and Fig. 9 is the display circuit with the side-row fertilization machine installed. FIG. 10 is a circuit diagram of the display circuit of the instrument panel when attached, and FIG. 10 is a circuit diagram of the sensor electrode.

The configuration of a riding rice transplanter equipped with a side row fertilizer applicator will be explained with reference to FIG.

The running gear is supported by front and rear lug wheels. The vehicle is configured as a four-wheel drive traveling device in which both front wheels 25 and rear wheels 26 are driven. A dash board is disposed at the rear end of the bonnet C below the steering handle 21, and an instrument panel B is disposed on the dash board as shown in FIG.

A fertilization control box 15 can be placed between the left and right steps 23 and the seat 22. The fertilization control box 15 can also be retrofitted when a side-row fertilization machine is attached.

In the seedling mounting stand 27 of the planting device, the planting claws 5 are driven by a planting drive transmission case 30. At the rear of the seedling platform 27, a fertilizer tank 32 and a feeding device 34 of a side row fertilizing machine are installed.
A guide pipe 17 that guides the fertilizer fed out is diagonally arranged.

A center float 29 and a side float 28 are fixedly attached to the lower end of the guide pipe 17, and the groove cutter 1
3 is attached. A guide plate 12, which is the essential part of the present invention, is attached to the rear of the groove cutter 13.

The configuration of the groove cutter 13 and the guide plate 12, which are the main parts of the present invention, will be explained based on the drawings of FIGS. 2 to 7.

The side row fertilization device is a planting drive transmission case 30.
The support body 6 protrudes further, and fertilizer tanks 32 are arranged on the support body 6 according to the number of planted rows.

Further, a guide rod 7 is provided to protrude downward from the support 6, and a guide bracket 9 is attached to the lower end of the guide rod 7.
is permanently installed. A groove cutter 13 is fixedly installed at the lower end of the guide bracket 9, and the guide plate 12, which is the essential part of the present invention, is provided at the rear of the groove cutter 13 in the shape of a "U" with an opening at the rear in plan view. It is installed as follows.

Further, the rear end of the soil plate 3 is pivotally supported on the guide bracket 9, so that the biasing force of the biasing spring 8, which applies a downward bias to the soil plate 3, can be adjusted in stages. The tip of the groove maker 13 is attached to a bracket 40 on a mounting rod protruding from the side float 28.
It is permanently installed.

In addition, the power to rotate the feeding plate in the feeding device 34 is extracted from the rotation of the planting claw 5 as an intermittent rotational force by the drive link 4, and the fertilizer is spread by matching the holes opened in both the feeding plate and the fixed disk. It is being taken out. The rotation of the feeding plate is transmitted to the scraping spring 1, thereby rotating the scraping spring 1 disposed through the guide pipe 17.

As the scraping spring 1 rotates within the guide pipe 17, the fertilizer adhering to the inner wall of the guide pipe 17 is scraped off. After the scraping spring 1 exits the guide pipe 17, the scraping spring 1 is removed from the guide plate 1.
The guide plate 12 is pressed against the front wall of the guide plate 12.
The fertilizer adhering to the front wall is also scraped off.

Even if the scraping spring 1 is arranged in this manner and the scraping spring 1 is driven and rotated, the inside of the guide plate 12 may be clogged with a mixture of fertilizer and mud.

In the present invention, a sensor electrode 2 is attached to the front wall of the guide plate 12 via an insulating elastic body 42 in order to detect clogging of the inside of the guide plate 12 with fertilizer and mud.

The sensor electrode 2 is used as one pole, and the guide plate 12 itself connected to the ground 11 is used as the other pole. Therefore, as shown in Figure 5, guide plate 1
When a mixture of fertilizer and mud adheres to the interior of the 6th floor, the resistance value changes due to the conductivity of the moisture contained in the fertilizer and mud, causing a certain amount of current to flow.
Fertilization error lamp 24 on instrument panel B shown in the figure
Then, the abnormal row display lamp 50 that indicates the position of the row where the abnormality has occurred lights up.

Reference numeral 10 denotes a connecting elastic body that connects the guide plate 12 and the guide pipe 17. Because of the connecting elastic body 10, the inside of the guide plate 12 may not be clearly visible and work may continue in a clogged state. .

Next, FIGS. 6 and 7 will be explained. FIG. 7 shows the configuration of the fertilization control box 15, and the resistance value in the clogged state, and thus the current value, differ depending on the type of fertilizer and the type of soil. Furthermore, regarding the degree of clogging, there are two types of clogging: clogging that does not interfere with work and clogging that does.The operator can adjust the set value for generating an alarm. In the case of FIG. 6, the set value display 19 has three stages, and the set value change switch 16 can be used to switch between the three stages.

Further, as shown in FIG. 5, a missing plant alarm lamp 20 is arranged on the instrument panel B, and is configured to warn of missing plants due to broken seedlings or poor feeding of seedlings. The abnormal row display lamp 50 is also used as the stock shortage warning lamp 20 and the abnormal fertilization lamp 24, thereby reducing the number of lamps.

In addition, not all rice transplanters are equipped with a side row fertilizer applicator, and it can be installed later only if requested, so the fertilization error lamp 2 is activated from the beginning.
It is possible to attach a separate instrument panel to every rice transplanter, or to attach a separate instrument panel for the side-row fertilizer applicator to the dart board section each time a side-row fertilizer applicator is attached.
Since it is wasteful from both a design point of view and a cost point of view, the abnormal row display lamp 50 for the stock shortage warning lamp 20 is also used as the fertilization abnormal lamp 24.
With this configuration, it is only necessary to provide an extra portion of the fertilization abnormality lamp 24. Numeral 14 is a row stop indicator lamp that is displayed when planting of some rows is stopped by the row stop device.

Next, the electric circuit of the fertilization abnormality sensor will be explained with reference to FIG. In the example of the electric circuit, a circuit of a fertilization abnormality sensor for a rice transplanter for 8-row planting is shown. The sensor electrode 2 detects a change in the resistance value of the mixture of fertilizer and mud, which is converted into a change in current, which is amplified by the differential amplifier 44 and lights up the fertilization abnormal lamp 24 and the abnormal row indicator lamp 50.

The main part of this invention is as shown in Figure 7.
A set value change switch 16 is provided in the fertilization control box 15, and as shown in FIG. The set value of the constant is changed only by the set value change switch 16. 45 is a constant voltage generator.

As shown in Figures 8 and 9, the instrument panel B can be used both for the rice transplanter alone and for the side row fertilizer. It is configured so that it can be easily installed by simply replacing the connector.

That is, in the case of only a rice transplanter, the connected connectors 46 and 47 are removed, and when the side row fertilizer applicator is attached as shown in Fig. 9, the connectors 46 and 47 are removed. Sensor electrode 2
The connectors 52 and 53 that extend further are connected. By providing the connectors 46 and 47 in this way, it becomes easy to attach the side row fertilizer to the rice transplanter, and even if the side row fertilizer is attached, it can be connected to the rice transplanter without attaching a separate instrument panel. Instrument panel B can be used as is without increasing costs. E is an electric circuit of the engine, 51 is an electric circuit of a key switch, 49 is a sensor for a row stopper, and 48 is a sensor for a stock shortage warning lamp 20.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, when detecting the presence or absence of ejected particles by reflecting the sensor on the reflective surface of the ejected particles, as in the conventional technology described in Japanese Patent Application Laid-open No. 61-88805, the reflective surface If mud or water gets on the
This alone causes a difference in the detected values, leading to malfunctions and false alarms.

In contrast, the present invention does not detect whether fertilizer or seeds have fallen, but rather detects whether mud has become clogged. By detecting the presence or absence of a blockage, it is possible to reliably detect a blockage.

Secondly, the fertilizer and seeds that fall from the feeding device fall or move toward the soil surface, and it is extremely difficult to instantly detect whether they are within the guide plate or not. On the other hand, since the mud clogged in the guide plate 12 tends to continue to exist in the area, detection by the sensor electrode 2 and the guide plate 12 becomes easier.

[Brief explanation of drawings]

Figure 1 is a side view of the side-row fertilization machine attached to a riding rice transplanter, Figure 2 is a side view of the side-row fertilization unit installed next to the planting part of the rice transplanter, and Figure 3 is a side view of the side-row fertilization unit attached to the rice transplanter. FIG. 4 is a cross-sectional plan view of the guide plate and sensor electrode portion, FIG. 5 is a cross-sectional plan view of the guide plate 12 filled with fertilizer, and FIG. A plan view of the instrument panel B of the dart board,
Fig. 7 is a perspective view of the fertilization control box 15, Fig. 8 is a circuit diagram showing the display circuit of the instrument panel when only the rice transplanter is installed without the side-row fertilization machine, and Fig. 9 is the display circuit with the side-row fertilization machine installed. FIG. 10 is a circuit diagram of the display circuit of the instrument panel when attached, and FIG. 10 is a circuit diagram of the sensor electrode. 1... scraping spring, 2... sensor electrode,
11... Earth, 12... Guide plate, 13... Grooving device, 15... Fertilization control box 16...
...Setting value change switch, 24...Fertilization error lamp, 50...Abnormal row display lamp.

Claims (1)

[Scope of utility model registration request] A guide plate 12 is disposed at the rear of the furrower 13, and a certain amount of seeds or fertilizer fed out by a feeding device 34 is dropped into the guide plate 12. The sensor electrode 2 is arranged to protrude with an elastic body 42 interposed therebetween,
With the sensor electrode 2 as one pole, the earth 11
The guide plate 12 connected to the guide plate 12 itself is used as the other pole, and the degree of clogging of the guide plate 12 with mud is detected by the change in resistance value between the sensor electrode 2 and the guide plate 12. Alarm device for seeding and fertilizing machines.