JPH0312841B2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a seedling feeding device for a rice transplanter, and is a device that effectively feeds pine-shaped seedlings toward a seedling dividing and planting device at all times. This is what we provide.

(Prior art) The rice transplanter is mainly equipped with a seedling division planting device 9 under an inclined seedling platform 11, and a seedling division planting device 9 is installed on the bottom plate 11b of the seedling platform 11 in an area of about 30 cm x 60 cm. The grown pine-shaped seedlings are placed on the seedlings, and while the seedlings are fed out to the side of the seedling dividing/planting device 9, each seedling is cut off with a claw 10 and planted in the field.

In order to feed out the seedlings, a ratchet wheel or a flat belt with protrusions is used, and in order to detect the presence or absence of the seedlings at a predetermined position and issue a signal,
A means is used in which the seedling detector 26 is made to protrude upward from b, and the seedling detector 26 is pushed down by passing seedlings.

Here is how to combine the seedling feeding device and the seedling detector 26. Conventionally, the seedling detector 26 was provided on the upper side of the flat belt, or as seen in Japanese Utility Model Application Publication No. 129217/1983. When viewed from the side, the seedling detector is provided so that its length when not pressed down is equal to the length of the ratchet wheel in the seedling feeding direction, and the seedling detector is located in front of the ratchet wheel. It was designed to cover the face.

(Problem to be Solved by the Invention) When a seedling passes by, the seedling detector 26
It floats up from b, and its operation also emits a signal,
It commands the replenishment of seedlings and interrupts the advance of the machine for that purpose. Replenishment of seedlings is carried out by inserting pine-shaped seedlings from the upper end of the slanted seedling platform 11. . And the rice transplanter is
The machine has a long idle period, operating only for about two weeks in spring a year, and the area near the seedling stand 11 is exposed to harsh conditions that receive water containing fertilizer, so the machine may not be able to operate after several years. At the beginning of the season, the seedling detector 26 may become rusty and not work properly.

Therefore, when feeding seedlings by inserting them onto the seedling tray 11, this seedling detector 26 becomes an obstacle, and since both of them do not have a feeding function in front of the seedling detector 26, the seedlings are not fed. There was something that happened.

(Means for Solving the Problems) The present invention solves the problems described above, and for this purpose, the following technical means are used.

In other words, the seedling division planting device 9 moves up and down at a fixed position with the tip of the claw 10 drawing a loop curve A.
The seedling platform 11 places seedlings on the bottom plate 11b and reciprocates from side to side, and when the seedling platform 11 reaches the left and right ends, the upper surface rotates in the direction toward the seedling dividing and planting device 9. It includes a flat belt 20 and a seedling detector 26 that is pressed down by a seedling passing on the bottom plate 11b of the seedling platform 11,
The seedling stand 11 is provided obliquely so that its lower end intersects with the downward side of the loop curve A of the claw 10, and the flat belt 20 has a large number of protrusions on its surface, and its upper surface is connected to the bottom plate 11b of the seedling stand 11. Place this seedling stand 1 so that it is aligned with
The seedling detector 26 is provided long at the bottom of the flat belt 20 so that the protrusions of the flat belt 20 appear in front and behind it when viewed from the side even when the seedling detector 26 is not pressed down by a seedling.
This seedling supply device for a rice transplanter is characterized in that the long flat belt 20 is shortened at the intermediate portion of the belt.

(Function) The seedling feeding device of the rice transplanter configured in this way has 30
Seedlings that have grown into a pine shape with a size of cm x 60 cm are placed on the bottom plate 11b of the seedling stand 11 in the longitudinal direction so as to be inserted from above.

Then, the seedling detector 26 is pressed down by the weight of the seedling. In addition, since the seedling platform 11 reciprocates from side to side, the pine-shaped seedlings are horizontally moved from the bottom end by the lateral movement of the seedling platform 11 and the operation of the seedling dividing and planting device 9. Each seedling is picked off one by one by the claws 10, and the seedlings are carried down and inserted into the field by the movement of the claws 10 in a loop curve A. In this way, when the seedling table 11 reaches the lateral end while the seedlings are being torn off, the flat belt 20 has its upper surface facing the seedling dividing and planting device 9, and the seedlings are being torn off. It rotates slightly more than its length, and the pine-shaped seedling is fed out toward the seedling dividing and planting device 9 by the engagement of the protrusion with the lower surface of the seedling.

In this way, the pine-shaped seedlings are cut off one by one to the left and right, and when one horizontal row is no longer available, they are fed out to the side of the seedling dividing and planting device 9, and the upper ends come down. When the end of the seedling passes over the seedling detector 26, the pressed down seedling detector 26 rises up and issues a signal indicating that the end of the seedling has passed over the seedling detector 26.

Based on this signal, the operator adds new seedlings onto the bottom plate 11b of the seedling platform 11 by inserting them from above.

(Effects) The rice transplanter has a long off-season and only one seedling stand.
The area near 1 receives water containing fertilizer components, so
When the machine gets a little old, it gets rusty and the seedling detector 26
may become difficult to operate early in the season.

The seedling stand 11 also has side walls 11a, 1 on the left and right.
1a, and its width is made to match the width of a pine-like seedling. If this is too wide, when the seedling stand 11 reaches the left and right ends, plants will be missing or the number of plants will be insufficient. Furthermore, if there is a gap between the left and right sides of the pine-shaped seedlings, the seedlings will be hit left and right by the left and right movement of the seedling stand 11, which will tend to further aggravate the above-mentioned missing plants and insufficient number of plants.

That is, the seedlings that are fed out are placed on the left and right side walls 11.
Since resistance is also received from a and 11a, the seedling detector 2
If 6 becomes rusty during the seeding period and becomes difficult to operate, the seedlings may not be drawn out satisfactorily.

On the other hand, according to the present invention, the seedling detector 26
is provided short in the middle of the long flat belt 20 so that when viewed from the side, the protrusions of the flat belt 20 appear on the front and back even when the seedlings are not pressing down. While the upper part of the detector 26 did not produce a feeding function, the upper part of the seedling detector 26 also gave a feeding force to the seedling.
Therefore, even if the seedling detector 26 becomes rusty during the off-season and its operation becomes slow, the seedling detector 2
6 does not pose an obstacle to feeding out the seedlings, and has the characteristic that the seedlings can always be fed out comfortably.

(Example) Next, embodiments of the invention will be described.

Reference numeral 1 denotes a towing vehicle body, which has a front wheel 2 and a rear wheel 3 at its lower part, an engine mounted at its upper front side, a control handle 4 at its rear side, and a pilot's seat 5 at its upper rear side. In addition, the engine is bonnet 6
It is covered with.

Reference numeral 7 designates spare seedling mounting stands provided on both the left and right sides of the pilot's seat 5.

8 is a planting transmission box that also serves as the body of the rice transplanting device, and the main transmission box part 8 is located at the center of the left and right sides.
a and an auxiliary transmission box portion 8b extending rearward from there.
The auxiliary transmission box section 8b extends from the left and right center portions or both left and right sides of the main transmission box section 8a, and differs depending on the number of rows in which seedlings are planted.

Reference numeral 9 denotes a seedling dividing and planting device, which is attached to the rear side of the sub-transmission box portion 8b via a crank and a swinging arm, and its claw 10 draws a long loop curve A in the vertical direction when viewed from the side. It is set up like this.

11 is a seedling stand, with left and right side walls 11a, 11a
and the bottom plate 11b are provided in a rectangular shape in plan view, and the front opening part thereof is positioned downward facing the seedling dividing and planting device 9, and the opposite side is positioned upward, and the planting transmission The box 8 is supported above the box 8 by horizontal sliding support frames 12 and 13 so as to be horizontally movable.

Reference numeral 14 denotes a seedling receiving frame, which is L-shaped in side view and is attached to the planting transmission box 8 so as to face the lower end of the seedling platform 11, and is compatible with the seedling dividing and planting device 9. A seedling splitting opening 15 is provided at the position where the claw 10 can intervene.

Reference numeral 16 denotes a moving rod that protrudes from both left and right sides of the main transmission box 8a and is provided to reciprocate from side to side in conjunction with a reciprocating and lateral movement device within the box 8a. The movable rod 16 and the bottom plate 11b of the seedling platform 11 are connected by an interlocking body 17, so that the seedling platform 11 can be moved horizontally and reciprocally.

Reference numeral 18 denotes a seedling vertical feeding device, which has a notch hole 19 formed in the bottom plate 11b of the seedling platform 11;
A flat belt 20 with protrusions is wound around the rotating wheels 21 and 22 at the front and rear of the lower side, and the outer peripheral surface of the flat belt 20 is lower than the surface of the bottom plate 11b of the seedling stand 11. It is configured to protrude slightly upward. The shaft to which the rotating wheel 21 located on the lower side is attached is provided to be rotated by a ratchet mechanism 23, and the ratchet lever 23a
When the flat belt 20 is rotated in the direction of the arrow C, the flat belt 20 is rotated in the direction of the arrow C.

Reference numeral 24 denotes a rotary drive body for vertically feeding the seedlings, which is located on both left and right sides of the main transmission box 8a and is rotated in the direction of the arrow 2. When the seedling platform 11 reaches the horizontal end by reciprocating from side to side, the ratchet lever 24 23a and this rotary drive body 24 are provided so as to engage with each other to rotate the flat belt 20. 25 indicates a bearing bracket.

Reference numeral 26 denotes a seedling detector, which is provided so as to protrude upward from a hole 27 provided in the bottom plate 11b of the seedling platform 11 on the side of the seedling vertical feeding device 18, that is, on the side of the flat belt 20 with projections. , its base is attached to a limit switch 28 fixed to the back surface of the bottom plate 11b of the seedling stand 11, and when a seedling is placed on this seedling detector 26, it is pressed down and the switch is turned OFF.
It is designed to stand up and turn on when the seedlings run out.

29 is a sensor mounting bracket. 30,
30 is a lead wire for an electric circuit, and is provided close to the back surface of the flat belt 20 with projections.

Reference numeral 31 denotes a warning lamp, and a center pole 32 attached to the bonnet of the towing vehicle body 1
is attached to the top of the limit switch 28,2.
8... is set to light up when any one of them is turned on.

Although the switch 28 mentioned above is of a contact type, as shown in FIGS. 6 and 7, a permanent magnet 33 is fixed to the seedling detector 26a, and the surface of the bottom plate 11b of the seedling stand 11 is covered with vinyl or A switch contact 35 is provided in a sealed tube 34 made of glass, and the seedling detector 26a is pressed by the weight of the seedling, and the permanent magnet 33
is close to the sealed tube 34, the switch is
It may be a non-contact type switch that turns off and turns on when the seedlings run out and escape upwards.

36 is the attachment link of the rice transplanting device, which is attached to the towing vehicle body 1.
The rice-transplanting device and the rice-transplanting device are connected to each other so that they can be moved up and down, and the rice-transplanting device can be moved up and down freely using a hydraulic device (not shown).

37 is a center float, and 38 is a side float, each of which is provided on the machine frame 8 of the rice transplanter so that its front side can move up and down. 39 indicates a transmission shaft.

Next, the operation of this rice transplanter will be explained.

Drive the rice transplanter into the field, place pine-shaped seedlings on the preliminary seedling mounting table 7 and each seedling loading table 11, and then move the rice transplanter to the towing vehicle body 1.
At the same time, each rotating portion of the rice transplanting device is transmitted from the towing vehicle body 1 side to the rice transplanting device side via the transmission shaft 39.

Then, the seedling platform 11 reciprocates left and right, and the seedling platform 1
Place the front end of the pine seedling placed on 1 in the seedling receiving frame 14.
The seedlings are fed into the seedling dividing opening 15 in sequence from the side. At this time, the seedling dividing and planting device 9 cuts off and engages the seedlings fed into the seedling dividing opening 15, and the central float 37
Then, use the side floats 38 to plant the seeds into the soil surface of the field, which has been leveled. In this way, the seedlings are divided and planted one by one, but when the seedling platform 11 reaches the left and right lateral ends, the rotating drive body 24, which is constantly rotating,
The ratchet lever 23a hits, and therefore,
The ratchet lever 23a is rotated in the direction of arrow R, and the rotating wheel 21 is driven via the ratchet mechanism 23. Therefore, the flat belt 20 rotates in the direction of arrow C, and the pine-shaped seedlings placed thereon are transferred so as to be drawn out toward the seedling receiving frame 14 side.

In this way, when the number of seedlings on the seedling platform 11 gradually decreases and the rear end of the seedling bed passes over the seedling detector 26, the seedling detector 26 is constantly pushed upward, so The switch turns ON.

Therefore, the warning lamp 31 lights up, instructing the operator to replenish the seedlings.

Therefore, the operator stopped the towing vehicle body 1 and also stopped the power transmission to the rice transplanting device side, and
The upper seedlings are supplied to the seedling stand 11 where there are fewer seedlings.

At this time, since the seedling detector 26 is located in the middle of the flat belt 20 and there is a protrusion on the upper side thereof, the front part of the seedling to be supplied is sure to be placed on the protrusion of the flat belt 20. becomes.

As mentioned above, in the case of the rice transplanter according to the present invention, not only when the seedling detector 26 is operating normally, but also due to the characteristics of the rice transplanter, at the beginning of the season, the seedling detector 26 may rust and become inoperable. Even if the seedling detector is heavy and creates resistance to feeding the seedlings, the seedling detector 2
The protrusions of the flat belt 20 also engage the bottom of the seedlings on the upper side of the transfer in step 6, and send them out forcefully.
Pine-shaped seedlings are always rolled out correctly.

[Brief explanation of the drawing]

Fig. 1 is a side view of a rice transplanter to which the present invention has been applied, Fig. 2 is a plan view of a portion thereof, Fig. 3 is an enlarged cutaway side view of a portion thereof, and Fig. 4 is a bottom view of a portion thereof. ,
FIG. 5 is an electrical circuit diagram thereof, FIG. 6 is a cutaway side view showing another embodiment of the seedling detector portion, and FIG. 7 is an enlarged cutaway side view of the switch portion. In addition, the symbols in the figure are as follows: 9... Seedling division planting device, 10... Claw, 11... Seedling stand, 11
b... Bottom plate, 20... Flat belt, 26... Seedling detector, I... Loop curve.

Claims (1)

[Claims] 1 A seedling dividing and planting device 9 in which the tips of the claws 10 draw a loop curve A and move up and down at a certain position, and a bottom plate 1.
Seedling stand 11 that reciprocates left and right with seedlings placed on 1b
When the seedling platform 11 reaches the left and right ends, the flat belt 20 rotates in such a direction that the upper surface faces the seedling dividing and planting device 9, and the seedlings pass over the bottom plate 11b of the seedling platform 11. The seedling stand 1 is equipped with a seedling detector 26 that can be pushed down.
1 is provided diagonally so that its lower end intersects with the downward side of the loop curve A of the claw 10, and the flat belt 20 has many protrusions on its surface so that its upper surface is aligned with the bottom plate 11b of the seedling stand 11. The seedling detector 26 is installed at the middle of the flat belt 20 so that the protrusions of the flat belt 20 appear in front and behind it when viewed from the side even when the seedling detector 26 is not pressed down by a seedling. A seedling feeding device for a rice transplanter is characterized in that it is provided shorter than the long flat belt 20.