JPS5934253Y2 - Missing plant detection device for rice transplanter - Google Patents

Description

[Detailed description of the invention] The present invention is a rice transplanter that continuously performs rice planting work, which is equipped with a seedling stand that moves back and forth from side to side, and a planting claw that takes out one seedling from the seedling stand. Regarding.

Conventionally, as shown in Japanese Utility Model Application Publication No. 52-78621, for example, a planted seedling detection switch that detects a planted seedling held by a planting claw, and a planting device that detects a planted seedling held by a planting claw, and a planting device in which the planting claw holds a seedling. There was a technology that was equipped with a malfunction prevention switch that detected planted seedlings within the trajectory.

In the prior art, the presence or absence of planted seedlings was confirmed for each plant, but the planted seedling detection switch was attached to the seedling stand and activated by the leaves or stems of the planted seedlings. The amount and hardness of the leaves or stems of the planted seedlings change due to changes in the size of the planted seedlings (young or adult seedlings) and the number of plants per plant, so the detection switch is set each time. It is necessary to adjust the operation of the detection switch, which is cumbersome to handle, and there is a risk of malfunction. This causes problems such as the leaves or stems being handled and damaged.

In addition, when the seedling mat of the planted seedlings scraped by the planting claw is soft, the seedlings will fall off from the planting claw before being planted on the circular surface, so the seedlings planted on the circular surface will be removed from the planting claw instantly. It was difficult to set the seedling clamping force of the planting claws to the minimum necessary force so that the seedlings would easily separate, and there was a problem that the planting claws could not easily separate the seedlings.

The inventor of the present invention has addressed the above-mentioned conventional problems, and has provided a seedling holding spring for holding the planted seedlings scraped and held by the planting claws, and provided on the planting claws. The spring is attached to the planting claw so that the detection switch can be turned on and off.

However, in the present invention, by sandwiching the planted seedlings between the planting claws and the seedling holding spring, the seedling clamping force of the planting claws is reduced to the minimum necessary force that makes it easy for the planted seedlings to instantly separate from the planting claws. Even seedlings planted on soft seedling mats can be held well in the planting claws, and the seedlings can be easily separated from the planting claws. By switching the switch, the switch can be easily installed in the part of the planting claw where mud does not adhere, but even if the size of the planted seedlings and the number of plants per plant are changed, the switch can be easily installed. It does not require complicated operation adjustments as in the past, and the handling operation can be simplified compared to the past, and it also prevents damage to the leaves or stems of the planted seedlings and deformation of the pine (root) of the seedlings. It is possible to detect planted seedlings more safely and properly than before by preventing such problems.

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a schematic side view of a rice transplanter, in which 1 is an engine, 2 is a transmission case, and 3 is a planting mission case. The engine 1 and each case 2.3 are integrally connected. The machine is intercepted and paddy wheels 5 are installed on the side of the machine via a swing case 4.

A handle 6 extends above the rear end of the planting mission case 3, and a seedling stand 9 with a low front and rear height that can be reciprocated from side to side via a guide member 7.8 is attached to the top of the case 3 and the handle 6. At the same time, a planting claw 10 is installed to take out one seedling from the seedling stand 9, and the body is attached to a float-like sliding body via a link 12 having a planting depth adjustment lever 11 and a buffer member 13. The seedling loading stand 9
The seedlings to be loaded on the seedlings are taken out by the planting claws 10, and the seedlings corresponding to -seeds are taken out so as to be successively planted in the field.

Figures 2 and 3 are enlarged views of the three parts of the planting mission case, and 15 in the figure is one of the planting claws 10 that cuts and holds one seedling 16 from the seedling stand 9. A certain fixed claw, 1
Reference numeral 7 denotes a movable claw, 1, which is the other of the planting claws 10 that forcibly pushes out the planted seedlings 16 held between the fixed claws 15 and plants them.
Reference numeral 8 denotes a planting arm having the fixed claw 15 and movable claw 17 installed at its tip; 19 indicates a rotating arm that is pivotally supported by a planting claw drive shaft 20 and connected to the middle of the planting arm 18 via a shaft 21;
Reference numeral 2 denotes a swinging arm which is rotatably mounted on a support rod 23 integrally formed with the mission case 3 via a shaft 24 and connected to the rear end of the planting arm 18 via a shaft 25, and the tip of the fixed claw 15 When one planted seedling 16 is held between the two, the seedling holding spring 26, which is pushed open by the planted seedling 16, is fixed by the fixing claw 1.
A planted seedling detection switch 27 is installed inside the fixed claw 15 and is switched by the opening/closing operation of the spring 26. Formed to be detected via.

Furthermore, the planting in which the fixed claws 15 cut and hold the planted seedlings 16 follows the trajectory r3. 4. 5. A cam plate 28 for detecting point 6J is fixed to the rotary arm 19, and the cam plate 28 switches the planting to follow the trajectory r.
3. 4. 5. A malfunction prevention switch 29 for detecting planted seedlings 16 within point 6J is attached to the transmission case 3 via a bracket 30, and is configured to prevent malfunction even if the spring 26 is displaced by mud in the field.

As shown in FIG. 4, the normally closed contact 27a of the planted seedling detection switch 27 is connected to the blue lamp 31 for confirming seedling planting, and the normally open contact 27b of the switch 27 is connected to the buzzer 32 and red lamp 33 for warning of missing plants. The contacts 2 are connected in series, and the contacts 2 are connected in series through the normally open contact 29a of the malfunction prevention switch 29.
7a and 27b are connected in parallel to a power source 34, and the power source 34 can be applied to the lamp 31 or the buzzer 32 only when the switch 29 is turned on by the cam plate 28.

The present invention is based on the above, and when seedlings are loaded on the seedling platform 9 and rice planting is carried out under the conditions shown in Fig. 1,
While reciprocating the seedling platform 9 from side to side, the rotary arm 19 is rotated at a constant speed via the drive shaft 20, and the swinging arm 22 is moved to move the planting arm 18 at an inconstant speed.
The planting claw 10 is moved in a planting cycle along this planting trajectory, the planting claw 10 takes out one seedling from the seedling stand 9, and the seedling is planted in the field. The movement is performed continuously to sequentially plant the seedlings on the seedling stand 9, and the planting claws 10 are planted along the trajectories r2, 3, . When the fixed claw 15 cuts and clamps the planted seedling 16 between the points, the planted seedling 16 opens the seedling holding spring 26, and at the same time the cam plate 28 comes into sliding contact with the malfunction prevention switch 29, as shown in FIG. Then, the contacts 27a and 29a are turned on, the contact 27b is turned off, the blue lamp 31 is lit, and normal rice planting work is performed.

On the other hand, when the planted seedlings 16 are not cut and held by the fixed claws 15, the planting occurs on the trajectory r4. 5. When the planted seedling 16 falls off from the fixed claw 15 between points 6J, the seedling holding spring 26 becomes the closed position, one contact 27a turns off, and the blue lamp 31 goes out, and at the same time the other contact 27
b is turned on, the buzzer 32 sounds, and the red lamp 33
lights up to alert you to the occurrence of missing plants.Planting should be done on the trajectory between points ``6°7'' and ``r2''. Between points 3J and 3J, the cam plate 28 separates from the switch 29, turning off the contact 29a to prevent the switch 27 from malfunctioning due to mud or the like.

When the seedling stand 9 is for multiple rows, the same number of blue lamps 31 and red lamps 33 as the number of planting claws 10 can be provided to facilitate the discovery of missing plants.

Furthermore, FIGS. 5 and 6 show other embodiments, and the planting in which the fixed claws 15 do not clamp the planted seedlings 16 follows the trajectory r7.
．． 8. 9.10.11. 0. 1. A cam plate 28' for detecting the 2J point is fixed to the rotating arm 19, and the cam plate 28' is switched by slidingly contacting the malfunction prevention switch 29', and the normally closed contact 27a of the planted seedling detection switch 27'' to the blue lamp 31' for identifying the rocky shore for planting seedlings, and the normally open contact 27b' of the switch 27' to the stock shortage alarm buzzer 32 and the red lamp 33'.
and an accidental animal prevention switch 29'.
each contact 27a' via a normally closed contact 29a'.

27b' to the power source 34, and the blue lamp 31' to the power source 3 through the normally open contact 29b' of the switch 29'.
4 and connect the cam plate 28 to the switch 29'.
When the switch 29' is in sliding contact, the blue lamp 31 is turned on via the contact 29b', while when the switch 29' is separated, the switch 27 is switched by the seedling holding spring 26.
The blue lamp 31' is turned on through the contact 27a' of the switch 27', or the buzzer 32' is turned on through the contact 27b' of the switch 27', and the red lamp 33' is turned on.
The blue lamp 31' lights up continuously during normal rice planting work, and the buzzer 32' lights up when a missing plant occurs or the planted seedling 16 falls off midway.
The red lamp 33' is turned on, and only at this time the blue lamp 31' is turned off to notify that an abnormality has occurred.

As is clear from the above embodiments, the present invention has a planted seedling detection switch 27 that detects the planted seedlings 16 held by the planting claws 10.
．． 27', and a malfunction prevention switch 29 that causes the planting claw 10 to hold the seedling and performs a planting seedling detection operation within the trajectory.
．． 29', the device includes a seedling holding spring 26 that clamps the planted seedlings 16 scraped and held by the planting claws 10, and a planted seedling detection switch 27 provided on the planting claws 10. The spring 26 is attached to the planting claw 10 so that the spring 27' can be switched on and off.
By pinching the planted seedlings 16 between the and the seedling holding springs 26, the seedling clamping force of the planting claws 10 can be set to the minimum necessary force that makes it easy for the planted seedlings to instantly separate from the planting claws 10, more easily than before. Even the seedlings planted on a soft seedling mat can be held well by the planting nails 10, and the strain of the planting 10 can be obtained well.
．． By switching the switch 27 and 27', the switch 27 and 27' can be easily attached to the part of the planting claw 10 where mud does not adhere. Even if the detection switches 27 and 27' are changed, the troublesome operation adjustment of the detection switches 27 and 27' can be omitted, and the operation of the detection switches 27 and 27' can be simplified compared to the conventional ones. This has practical effects such as preventing damage to the leaves or stems of the seedlings 16 and deformation of the seedling pine (roots), etc., and detecting the planted seedlings 16 more safely and properly than in the past.

[Brief explanation of the drawing]

Fig. 1 is a side view of a rice transplanter showing one embodiment of the present invention;
3 and 3 are enlarged views of the main parts thereof, FIG. 4 is an electric circuit diagram thereof, FIG. 5 is an enlarged view of the main parts showing another embodiment, and FIG. 6 is an electric circuit diagram thereof. 10... Planting nails, 16... Planting seedlings, 2
7.27'... Planted seedling detection switch, 29.2
9'...Malfunction prevention switch.

Claims (1)

[Scope of utility model registration request] A planted seedling detection switch 27, 27' that detects the planted seedling 16 held by the planting claw 10, and a planting seedling detection switch 27, 27' that detects the planted seedling 16 held by the planting claw 10, and a malfunction prevention function that performs the planted seedling detection operation within the trajectory of the planting where the planting claw 10 holds the seedling. In an apparatus equipped with a switch 29, 29', the planted seedling 16 to be scraped and held by the planting claw 10 is removed by the planting claw 10.
The rice transplanter is equipped with a seedling holding spring 26 which is held between the rice planting claws 10 and 26, and the spring 26 is attached to the planting claw 10 so that a planted seedling detection switch 27, 27' provided on the planting claw 10 can be turned on and off. Stock deficiency detection device.