JPS6329377Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seedling detection device for grouped seedlings placed on a seedling stand.

When planting seedlings using a rice transplanter, the number of remaining planting rows at the edge of the bank often does not match the number of rows planted by the rice transplanter. In the previous step of the planting process, seedlings are planted by reducing the number of planting rows, and in the final step along the edge of the bank, the seedlings that have already been planted are disturbed by planting with the entire number of rows aligned. This allows for orderly planting rows to be formed throughout the area. For this reason, the seedling platform is equipped with a seedling stopper that can temporarily stop seedling planting by removing grouped seedlings from the scraping path of the planting claw, but the seedlings are not placed at the rear of the machine. For things like riding rice transplanters that have attached parts,
In some cases, the retraction operation status of the seedling stopper was not visible, and after adjusting the reduction of the planting row, the user forgot to release the seedling stopper, and the final planting work was carried out at the edge of the bank with the group seedlings stopped. In this case, there was a drawback that the missing stubble rows in which seedling planting had been stopped had to be manually supplemented. Therefore, it is proposed to provide a detection mechanism that detects that the seedling stopper is in operation, but it is also proposed that the seedling stand is provided with another detection mechanism that detects when there are few remaining grouped seedlings. In addition, there are new drawbacks such as the need to provide a notification device for each detection mechanism, which is complicated and also makes it confusing to recognize which detection mechanism is operating.

The present invention was devised to eliminate these drawbacks in view of the above-mentioned circumstances, and is equipped with a detection mechanism that detects the operating state of the seedling stopper to prevent forgetting to release the seedling stopper. However, the notification by the detection mechanism for the seedling stopper and the notification by the detection mechanism for group seedlings, which is activated when the number of placed group seedlings is running low, are different notifications from the same notification device. Accordingly, it is an object of the present invention to provide a seedling detection device for a rice transplanter that can reliably recognize which detection mechanism is operating.

The structure of the present invention will be explained with reference to an embodiment shown in the drawings. 1 is a traveling body of a riding rice transplanter, and a rear part of the traveling body 1 is used for planting seedlings via a parallel link mechanism. The attachment part 3 is equipped so that it can be raised and lowered freely. 4 is a seedling stand of the seedling planting section 3, 5 is a planting claw, and 6 is a float sliding on the rice field. A seedling receiver 7 in which a seedling scraping groove 7a is formed is provided at the lower end of the slope of the seedling platform 4, and the seedling receiver 7 at the lower end of the slope is fed out by a seedling feeding rotor 8 that rotates intermittently. The extended ends of the grouped seedlings A are divided into seedlings for unit planting from the seedling scraping groove 7a by the planting claws 5 which move in a planting cycle, and are then planted on the rice field. A bracket 9b is provided at the inclined lower end of the partition wall 4a that partitions each seedling mounting surface of the seedling mounting table 4, and between the brackets 9b, two upper and lower rows of seedling holding rods 9, 9a are arranged horizontally. The seedling leaves on the lower end side of the feeding group of seedlings A can be held down at a position above the seedbed position to prevent damage to the seedling leaves when scraping the seedlings with the planting claws 5. There is. Reference numeral 10 is a support arm whose base end is rotatably supported on the lower side seedling holder 9a,
An engaging portion 10a is formed in the middle portion of the support arm 10 and is detachably engaged with the upper seedling presser 9. A plate-shaped seedling stopper 1 is provided between the tips of the support arms 10.
1 is fixed, but in the upward movement position where the engaging part 10a is locked to the upper side seedling leaf holding body 9, the seedling holding body 11 presses the upper end of the seedling, and the seedling holding body 11 holds the upper end of the seedling on the seedling stand 4. At the lowered position where it contacts the surface, the feeding and lowering of the collective seedlings A is regulated.

In the embodiments shown in FIGS. 2 to 5,
Above the lowered position of the seedling stopper 11 of the seedling platform 4 is a seedling detection switch 1 for detecting the presence or absence of grouped seedlings A.
2 detection bodies 12a are provided between the attachment position of the seedling dispensing rotating body 8 and the lowering position of the seedling stopper 11 to detect when the seedling stopper 11 has been lowered and the dispensing of the group seedlings A has stopped. A detection body 13a of a seedling stop detection switch 13 is provided. These detection switches 12 and 13 are formed of normally closed contacts, and when the clustered seedlings A are placed on the detection bodies 12a and 13a, they are pressed by the clustered seedlings A and turned OFF.
It's starting to become. FIG. 5 shows a wiring diagram of a detection mechanism using each detection switch 12, 13, and the side line of the power supply 14 is connected to switch group B consisting of seedling detection switch 12 and seedling stop detection switch 1.
The detection switches 12 and 13 are connected to one terminal of each of the detection switches 12 and 13. On the other hand, each switch 12,1
The other terminal of 3 is wired and connected to the other terminal of the notification light 15, which has one terminal connected to the side line of the power source 14. That is, in this embodiment, when either one of the detection switches 12 and 13 is turned ON, the notification light 15 lights up, but during the rotation to the switch group B, the blinking unit 16 is interposed.
When only the seedling detection switch 12 is turned on, the notification light 15 is in a blinking state.

On the other hand, the ones shown in FIGS. 6 to 8 show other embodiments, in which a two-contact type detection switch 17 is provided on the seedling stand 4.
The detection switch 17 is turned OFF when the group seedlings A are placed on the seedling stand 4 and the detection body 17a is pressed down to the position shown by the solid line in FIG. 6, and the group seedlings A are consumed and the group seedlings A In the state where the push-down is released and the plant moves upward (the virtual line position in Fig. 6), the switch contact d of the seedling detection side circuit D in which the flashing unit 16 is interposed is turned on, and the notification light 15 is brought into a flashing state. When the feeding of the group of seedlings A is stopped by the seedling stopper 11, the above-mentioned
It is pushed down further below the OFF position to turn on the switch contact e of the seedling stop detection side circuit E, so that the notification light 15 continues to light up.

In the figure, 18 is an operation panel provided with a warning light 15, 19 is a spare seedling stand, and 20 is a running wheel.

Next, the operation of the present invention constructed as described above will be explained. When planting seedlings, in order to plant all the rows in one row, the engaging portion 10a of the support arm 10 is engaged with the upper seedling holding body 9, and the seedling holding body 11 is raised. Once fixed in position, the grouped seedlings A are intermittently fed out by the intermittently rotating seedling feeding rotor 8, and are moved into the seedling scraping groove 7 of the seedling receiver 7 by the planting claws 5.
Seedlings will be scraped off from a to the unit planting stock and planted on the rice field.

In this kind of seedling planting work,
In the first embodiment shown in the figure, the detection switch 1
Both of Nos. 2 and 13 are pushed down by group seedling A (see Figure 3) and turned OFF. When the planting work progresses and the group of seedlings A is consumed to the point where it passes the sensing body 12a on the side of the seedling detection switch 12, the sensing body 12a rises (as shown by the imaginary line in FIG. 3) and closes the seedling detection switch. 12 is turned on, and the corresponding notification light 15 lights up in a blinking state to notify the operator that it is necessary to replenish the group seedlings A. Thereupon, the machine can be stopped, the spare group seedlings A can be supplied from the spare seedling platform 19, and the planting work can be continued again.

Then, as the seedling planting process progresses, it is necessary to reduce the number of planting rows in the process before the final seedling planting process, which is the edge-to-edge process, and then perform the planting process with all the rows in place in the final process. In this case, the group of seedlings A in the relevant row is shifted above the lowered position of the seedling retaining body 11, and the engaging portion 10a is moved from the upper side seedling retaining body 9.
The seedling stopper 11 is brought into contact with the seedling mounting surface, and the group of seedlings A is evacuated from the scraping path of the planting claws 5, as shown in FIG. If the seedling planting work is carried out in this manner, the number of planting rows will be reduced by an arbitrary number. At this time, the detection body 12 of the seedling detection switch 12
A is pushed by group seedling A and turned OFF, but
The seedling stop detection switch 13 is turned ON because the movement of the group of seedlings A is stopped above the detection position by the detection body 13a, and the corresponding notification light 15 is turned on. Therefore, even if the seedling planting section 3 is provided at the rear of the machine as in this embodiment, the operator can indicate by lighting the warning light 15 that the planting row reduction adjustment work is in progress. Since this can be recognized, it is possible to prevent forgetting to release the seedling stopper 11 during the final verge work, and to perform seedling planting work with all the rows aligned. Moreover, the consumption state of the group of seedlings A is detected and the time when the seedlings are stopped is detected using one notification light 15, and furthermore, this notification light 15 blinks during one detection, and continuously flashes during the other detection. Since both detection states can be identified by lighting, the number of notification lights 15 can be minimized according to the number of strips, and identification and maintainability can be improved.

Further, in the second embodiment shown in FIGS. 6 to 8, when the group of seedlings A is placed on the seedling stand 4 (see FIG. 6), the detection switch 17
, the detection body 17a is pushed down by the group seedlings A and is turned off, but when the group seedlings A are consumed and pass the detection body 17a position, the detection body 17a rises to the imaginary line position and the detection is stopped. The switch 17 turns on the switch contact d of the seedling detection side circuit D, causing the corresponding notification light 15 to blink. On the other hand, when the seedling stopper 11 is used, the operating rod 11a pushes the detection body 17a further downwards than the position where it touches the bottom of the seedling bed, turns on the switch contact e of the seedling stopper detection side circuit E, and lights up the corresponding notification light 15. It is something to do.

In the above embodiment, the notification light 15 is used, but the invention is not limited to this, and a notification buzzer or the like may be used.Furthermore, a relay may be used to make the notification light 15 blink, or a notification buzzer may be used in combination. You may also do so.

In summary, the present invention provides a rice transplanter that intermittently feeds out group seedlings placed on a seedling platform and scrapes them with a planting claw for planting. A seedling detection switch that detects when there are few remaining clustered seedlings, and a seedling stop detection switch that detects the retracting operation state of a seedling stopper that can evacuate the clustered seedlings from the scraping trajectory of the planting claw are provided. Connect both detection switches to the notification device, and
Since the above-mentioned notification device is configured to give different notifications depending on the detection of each detection switch, the seedling stopper detection switch detects the operating state of the seedling stopper and allows the seedlings to be seeded after the planting row reduction adjustment work is completed. Although it can prevent forgetting to release the stopper, the notification device can notify by both the seedling stop detection switch and the seedling detection switch, so it is not possible to configure it with a single notification device. This makes it possible to improve identifiability and maintainability. Moreover,
Since the notifications for seedling stop detection and the consumption status detection of group seedlings are different, it is possible that the number of placed group seedlings remaining is decreasing, or that the seedling stopper is moving the group seedlings away from the scraping trajectory. This makes it possible to reliably recognize whether or not the seedlings have stopped, to replenish the group of seedlings at an appropriate time, and to reliably prevent forgetting to release the seedling stopper.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling detection device in the rice transplanter according to the present invention, and FIG. 1 is an overall side view of the riding-type rice transplanter, FIG. 2 is a perspective view of the main parts, FIG. 4 is a longitudinal cross-sectional view of the main part explaining the function, FIG. 5 is a wiring diagram, FIGS. 6 and 7 are longitudinal cross-sectional views of the main part explaining the function in other embodiments,
The figure is the wiring diagram. In the figure, 4 is a seedling stand, 5 is a planting claw, 8 is a seedling feeding rotor, 11 is a seedling stopper, 12 is a seedling detection switch,
13 is a seedling stop detection switch, 15 is a warning light, 17
is a detection switch.

Claims (1)

[Scope of utility model registration request] In a rice transplanter that intermittently pulls out group seedlings placed on a seedling platform and scrapes them with a planting claw for planting, there are few remaining grouped seedlings on the seedling feeding path of the seedling platform. A seedling detection switch that detects when a seedling has grown, and a seedling stop detection switch that detects the retracting operation state of a seedling stopper that can evacuate grouped seedlings from the scraping trajectory of the planting claw are provided, and both of the above detection switches are used as an alarm device. 1. A seedling detection device for a rice transplanter, characterized in that the above-mentioned notification device is connected to the device and configured to issue different notifications depending on the detection of each detection switch.