JPH0567241B2 - - 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 more specifically, a seedling feeding device for a rice transplanter, in which a plurality of seedlings with soil are placed and accommodated on the left and right sides and reciprocated horizontally from side to side. This invention relates to a seedling feeding device for a seedling planting machine that feeds seedlings one plant at a time to seedling planting tools arranged side by side on the left and right.

[Conventional technology and its issues]

Conventionally, as this type of device,
There was one with the configuration shown in Publication No. 56522. In other words, a part of the bottom plate of the seedling stand is cut out and the front and back parts are placed in this part.
There was a structure in which a rear fixed roll was attached and a seedling transfer belt was stretched, and when the seedling tank reached the left and right sides, it rotated a certain amount to supply the seedlings to the seedling planting tool. However, with this conventional structure, if the thickness of the seedling bed for the seedlings placed and housed on the seedling stand is not constant, the seedling bed may be unnecessarily pressed down or clogged between the seedling transfer belt and the seedling floating prevention body. This has caused problems such as not being able to vertically feed the seedlings, or creating a large gap between the seedlings and the floating preventer, causing the seedbed to move up and down unnecessarily, damaging the seedbed. It is also possible to adjust the seedling transfer belt up and down or to adjust the seedling floating preventer up and down, but these adjustment operations are troublesome. Furthermore, when the side of the seedling floating prevention body is pressed down with a spring, the seedbed is pressed down too strongly only in the area where the seedling floating prevention body is located, so that accurate transfer cannot be expected.

[Means to solve the problem]

In order to solve the above-mentioned problem, this invention provides a seedling tank 9 in which a plurality of seedling stands each consisting of left and right side walls a and a bottom plate b are arranged in a row in the left and right direction.
Seedling planting tools 10a, 10b, 10c, 10d, 10e installed opposite to a, 9b, 9c, 9d, 9e are moved back and forth horizontally to the left and right to plant one seedling at a time. 10c, 10d, 10e
In the seedling supply device that supplies seedlings to
A hole 15 of a predetermined width is formed in the bottom plate b of each of a, 9b, 9c, 9d, and 9e, and on one side of the front and back of this hole 15 there is a drive roll that rotates a certain amount when the seedling tank 9 reaches the left and right lateral ends. 16, and on the other side of the front and rear of the hole 15, a driven roll 26 attached to a support shaft that can freely swing in the vertical direction is installed on each seedling stand 9a, 9b, 9c, 9.
d and 9e, and a transfer belt 25 is stretched between the driving roll 16 and the driven roll 26,
Spring 2 moves each driven roll 26 side to the bottom plate b side of the seedling stand.
2 and 23, and a seedling floating preventer 30 is provided on the upper part of the transfer belt 25 to prevent the seedlings placed on the transfer belt 25 from floating. did.

[Function and effect of the invention]

According to this invention, when the thickness of the seedling bed of seedlings placed on the seedling platform is thick, the transfer belt 25 automatically moves downward due to the seedling floating prevention action of the seedling floating prevention body 30, so that the seedlings are not unnecessarily damaged. The seedlings can be accurately transferred by the transfer belt 25 without causing an unexpected situation such as being stuck between the transfer belt 25 and the seedling floating prevention body 30 and becoming unable to transfer. Further, when the thickness of the nursery bed for seedlings is thin, the transfer belt 25 moves upward and the seedling floating prevention body 3
At 0, the seedlings are appropriately transported by the transport belt 25 while preventing the seedlings from floating.

Therefore, even if the thickness of the nursery bed for seedlings is somewhat thick or thin, the seedlings can be accurately transported by the transfer belt 25 while being prevented from floating by the seedling floating preventer 30. Seedling planting tools 10a, 10b,
With 10c, 10d, and 10e, the seedlings can be divided into individual plants and planted in the field, allowing for good rice transplanting work.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

1 is a towing vehicle body. 2 is the front wheel, 3 is the rear wheel, 4
indicates the bonnet covering the engine, 5 indicates the steering wheel, and 6 indicates the seat.

Reference numeral 7 denotes a rice transplanting device, which supports a seedling tank 9 on the top of a planting mechanism case 8 so that it can be moved horizontally and reciprocally, and has seedling planting tools 10a, 10b, 10c at the rear end of the planting mechanism case 8. , 10d, and 10e are mounted by a crank and a swinging arm so as to move up and down.
a and 12b are installed.

The rice transplanting device 7 is attached to the rear part of the towing vehicle body 1 via an elevating link mechanism 13. 14 is a hydraulic cylinder device.

The seedling tank 9 has five seedling stands 9a, 9b, 9c, 9d, which are composed of left and right side walls a, a and a bottom plate b.
9e are integrally arranged in a row in the left and right lateral directions.

Holes 15, 15, . . . are bored in the bottom plate b of each of the seedling stands, and are cut out with a constant width and a constant size in the front-rear direction.

Reference numerals 16, 16, . . . are drive rolls, which are fixed to a drive shaft 18 supported by brackets 17, 17, . Drive rolls 16, 16
... extends inside one end of the holes 15, 15. Then, the drive shaft 18 is connected to the ratchet mechanism 19.
The ratchet lever 19a is configured to be engaged and rotated by a rotary arm 20 that constantly rotates on the outside of the planting mechanism case 8.
It is set so that it is engaged when it reaches the left and right lateral edges.

26, 26... are driven rolls, and transfer belts 25, 25... are wound between the drive rolls 16, 16..., and these driven rolls also have holes 15, 15.
... can intervene between each driven roll 26,
26... are each pivoted by separate metal fittings 21, 21..., and these metal fittings 21, 21... are suspended on both left and right sides by weak springs 22, 22... to the bottom plate side of each seedling stand 9a to 9e, respectively. It's lowering. And the metal fittings 21, 21 in the middle part of these left and right springs 22, 22...
One end of the spring 23, 23... is fixed to the other end of the spring 23, 23..., which is attached to the lever 24, 24... attached to the back side of each upper end of the seedling stand 9a, 9b... via wires 27, 27... , 24... and springs 23, 2
3. It is structured so that each part can be relaxed or tensed separately. That is, when tensioning the springs 23, 23... with the levers 24, 24..., the transfer belt 2
5, 25... are stretched so that the upper surfaces of the windings protrude slightly upward from the holes 15, 15, and can swing freely in the vertical direction.On the other hand, when the springs 23, 23... are loosened, the windings 23, 23... are stretched downward by the weight. Rotating transfer belt 25,
25... are relaxed so that even if the drive shaft 18 rotates, its power is not transmitted.

In the illustrated example, the metal fittings 21, 21, . . . are lifted up by springs, but it is of course possible to adopt a structure in which the support shaft itself is lifted up.

In the figure, 28, 28, . . . are switches for detecting a decrease in the number of seedlings, and this switch is connected to a warning light 29, and is installed in each of the seedling stands 9a to 9e to warn of a decrease in the number of seedlings. ing. 30,3
Reference numeral 0 denotes a seedling floating prevention body, which is a rod-shaped object attached to the seedling tank 9 so as to be positioned above the transfer belt 25 on the upper surface of each of the seedling stands 9a to 9e.

To explain the operation of the configuration of the above example, plate-shaped seedlings with soil are placed and accommodated in each of the seedling tanks 9a to 9e. At this time, each lever 24, 24... holds the spring 23, 23... in a tensioned state as shown in FIG.
Then, the bed of seedlings is placed on the upper surface of the transfer belts 25, 25.... At this time, the seedling floating prevention body 30,
30...acts to prevent the seedlings from floating up. That is, the transfer belts 25, 25...
2..., 23..., the bottom plate b of the seedling stands 9a to 9e
Since it is energized so as to protrude upward from the upper surface, the seedling floating prevention body 30 always prevents the seedlings from floating, regardless of whether the thickness of the seedling bed is thick or thin.

In this state, seedling planting work is started.
That is, the towing vehicle body 1 tows the rice transplanting device 7 with each of the soil leveling floats 11, 12a, and 12b in contact with the topsoil surface of the paddy field, and each rotating part of the rice transplanting device 7 is driven, and the seedling tank 9 is reciprocated from side to side. Moving, the seedling planting tools 10a to 10e divide the seedlings in each of the seedling stands 9a to 9e one by one and plant them on the leveled surface of the paddy field.

When the seedling tank 9 reaches the left and right lateral ends, the rotating arm 20, which is constantly rotating, engages the ratchet mechanism 19.
engage the ratchet lever 19a of the drive shaft 18.
Rotate. Therefore, the drive roll 16,1
Transfer belt 2 that 6... rotates and wraps around it
5, 25... Therefore, the seedling bed is reliably transferred downward in a state where it is prevented from floating by the seedling floating prevention body 30, and the seedling planting tools 10a to 10
Accurately supply seedlings to e.

In this way, the seedling planting work is carried out, but if the width of the remaining paddy field becomes narrower than the width of the entire planting row due to the ridge, the seedling planting tool 10a for 5-row planting - 10e, the operation of several seedling planting tools on the lateral end side is stopped and the seedling planting work is performed. At this time, unless the rotation of the transfer belts 25, 25, . In such a case, operate the levers 24, 24... attached to the upper part of the seedling stand to relax the springs 23, 23..., rotate the transfer belts 25, 25... downward, and rotate the transfer belts 25, 25... 25... to prevent the belt from driving.

As described above, even if the thickness of the seedling bed is slightly different, the driven rolls 26, 26 of the transfer belts 25, 25... can be automatically swung upward by the springs 22..., 23... In order to be
This allows the seedlings to be transported smoothly.

If the switch 28 detects a decrease in the number of seedlings while the spring 23 is in tension, it releases the tension and relaxes the transfer belt 25, or depresses the main clutch pedal to lock it. If a configuration is adopted in which the tension state is released due to the operation as shown in FIG. The work of supplying seedlings to ~9e becomes extremely easy.

That is, since the transfer belt 25 retracts downward into the bottom plate b, it can be easily replenished without getting caught on the transfer belt 25.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view, and FIGS. 3 and 4 are side sectional views of main parts.
FIG. 5 is a perspective view of the main part. Symbols in the figure, 9 are seedling tanks, 9a, 9b, 9c,
9d, 9e are seedling stands, 10a, 10b, 10c,
10d and 10e are seedling planting tools, 15 is a hole, 16 is a drive roll, 22 and 23 are springs, 25 is a transfer belt, 26 is a driven roll, 30 is a seedling floating prevention body,
a indicates a side wall, and b indicates a bottom plate.

Claims (1)

[Claims] 1 Seedling planting by installing a seedling tank 9 in which a plurality of seedling stands consisting of left and right side walls a and a bottom plate b are arranged side by side in the left and right direction opposite each seedling stand 9a, 9b, 9c, 9d, and 9e. Tools 10a, 10b, 10c, 10d, 10e
The seedling planting tools 10a, 10b, 10c, 10d,
In the seedling feeding device 10e, a hole 15 of a predetermined width is formed in the bottom plate b of each of the seedling stands 9a, 9b, 9c, 9d, and 9e, and a seedling tank 9 is provided on one side of the front and back of the hole 15. A drive roll 16 that rotates a certain amount when the left and right lateral ends are reached, and a driven roll 26 attached to a support shaft that can swing vertically on the other front and rear sides of the hole 15 are installed on each seedling stand 9a, 9b. ,9
c, 9d, and 9e, and the drive roll 1
A transfer belt 25 is stretched between the rollers 6 and the driven rolls 26, and the side of each driven roll 26 is elastically supported by the springs 22 and 23 to the bottom plate b side of the seedling stand. A seedling floating prevention body 3 that prevents the seedlings placed on the transfer belt 25 from floating up.
A seedling feeding device for a rice transplanter equipped with a 0.