JPH0242904A - Non-covered soil type direct seeding machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to an uncovered soil type flooded direct sowing machine.

(Prior Art) Some hot water direct seeding machines are of the non-covering type, in which a seeding recess such as a groove is formed on the rice field surface, and seeds are sown in the seeding recess and germinate without covering with soil.

This non-covered soil cultivation method has the advantage of ensuring a higher germination and seedling establishment rate than the conventional cultivation method of direct sowing in soil.

(Problems to be Solved by the Invention) In the case of the uncovered soil method, the seeds are not covered with soil after sowing, so if the sowing recess is in the form of a continuous groove, there is a drawback that the seeds will be moved by the water flow when entering the water.

In view of such conventional problems, an object of the present invention is to make it possible to prevent the movement of seeds after sowing.

(Means for Solving the Problem) As a means for that purpose, the present invention provides a forming tool 22 on the lower side of the seeding float 23 that can be raised and lowered, and the forming tool 22
This is a non-covered type flooded direct sowing machine that sows seeds A in a sowing recess 30 formed on the rice field surface, and is equipped with a lifting mechanism 32 that raises and lowers a seeding float 23 intermittently.

(Function) During sowing work, the sowing float 23 slides on the rice field,
A seeding recess 30 is formed on the rice field using the forming tool 22, and the recess 3 is
Seed A is sown in 0. On the other hand, since the elevating mechanism 32 intermittently raises and lowers the seeding float 23, when the seeding float 23 is raised, it becomes impossible for the forming tool 22 to form the recess 30, and the impossible section remains as a weir-like embankment 42.

(Example) Hereinafter, the present invention will be described in detail with reference to the illustrated example.
In the figure, reference numeral 1 denotes a rice transplanter attached to the rear of a riding-type mobile body via an elevating link mechanism 2, which includes a transmission case 3, a seedling platform 4, a planting mechanism 5, a center float 6, and a pair of left and right side floats 7. Consists of etc.

As shown in FIG. 1, the planting mechanism 5 includes a crank arm 9 fixed to the crankshaft 8 of the transmission case 3, a planting arm 11 connected to the crank arm 9 with a pin 10, and the transmission case 3. It has a swinging arm 14 which is pivotally supported by a pin 12 and connected to the planting arm 11 by a pin 13, and a planting claw 15 and an extrusion metal fitting 16 are provided at the tip of the planting arm 11. . And, the planting mechanism 5 has a crankshaft 8
Due to the rotation, the planting claw 15 of the planting arm 11 moves in a long ellipse in the vertical direction, and the swinging arm 14 swings back and forth around the bin 12.

A horizontal support rod 17 is removably attached to the rear of the rice transplanter 1 via a bracket or the like, and a plurality of non-covered hot water direct sowing machines 18 are laterally attached to the support rod 17.

The direct sowing machine 18 includes a seed tank 19 into which the seeds A are placed, a feeding device 20 which feeds out the seeds A in the seed tank 19, a seed chute 21 which guides the fed seeds A, and a molding tool 22.
It is equipped with a seeding float 23 and the like.

The feeding device 20 has a feeding shaft 24 and a feeding roll 25, and is interlocked and connected to the planting mechanism 5 via an interlocking mechanism (not shown), and rotates only in one direction.

As shown in FIG. 1, the seeding float 23 is connected to the support rod 17 via a bracket 26, a parallel link mechanism 27, and a bracket 28 so as to be able to rise and fall, and is biased downward by a spring 29. The seeding float 23 has a hollow shape, and a forming tool 22 for forming a seeding recess 30 in the field surface is provided in a protruding manner on the lower surface, and a seed chute 21 is attached to the seeding recess 30 formed by the forming tool 22. A sowing guide 31 is provided to guide and sow the seeds A from the seedbed.

32 is an elevating mechanism for intermittently elevating and lowering the seeding float 23, and includes a cam 33 provided at the end of the feeding shaft 24;
It has a swing link 36 pivotally attached to the support frame 34 of the seed tank 19 with a pin 35, and a connecting link 37.

The swinging link 36 is disposed on the side of the seed tank 19 in the front-rear direction, and is pivotally supported by a pin 35 so as to be able to swing vertically. A cam driven roller 38 that abuts from the side is attached. A connecting link 37 is pivotally attached to the rear end of the swing link 36 by a pin 39. As shown in FIG. 1, the connecting link 37 has a long hole 40 at its lower end, into which a pin 41 of the parallel link mechanism 27 is slidably inserted.

Therefore, the float 23 can move up and down within the elongated hole 40 following the ups and downs of the rice field, and the cam 3 of the lifting mechanism 32
It can also be moved up and down by driving No. 3. This lifting mechanism 32
The amount of rise of the seeding float 23 is such that the lower end of the forming tool 22 is approximately at the same level as the field surface, or slightly up and down from the field surface, and the weir-like embankments 4 are placed approximately equally spaced between the seeding recesses 30.
2 is now possible.

During sowing work, the rice transplanter 1 is idled, and the direct sowing machine 18
Activate the side. Then, the feed shaft 24 rotates in conjunction with the planting mechanism 5 of the rice transplanter 1, so the feed roll 25 feeds out the seeds A in the seed tank 19 in fixed quantities, and the seeds A pass through the seed chute 21 and the sowing guide 31. After that, it falls to the rice field side. At this time, the seeding float 23 slides on the rice field surface and forms a groove-shaped seeding recess 30 with the forming tool 22 on the lower side (so that the seeds A pass through the sowing guide 31 into the formed seeding recess 30. It falls and is spread in rows.

On the other hand, since the cam 33 drives the swing link 36 up and down by the rotation of the feed shaft 24, the seeding float 23 is intermittently raised and lowered via the connecting link 37 and the parallel link mechanism 27. That is, after sliding on the rice field for a certain distance, the seeding float 23 rises for a short distance.

Therefore, the forming tool 22 cannot form the seeding recess 30 in the rising section of the seeding float 23, and a weir-like embankment 42 is formed in that area, so this embankment 42 prevents the seeds A from flowing when entering the water. Can be done.

FIG. 3 shows an embodiment in which the present invention is adopted in a point-seeding type direct sowing machine. That is, in FIG. 3, reference numeral 43 denotes a seeding shutter, which is pivoted to the lower end of the seed chute 21 with a pivot 44 so as to be openable and closable, and is biased by a spring 45 in the closing direction. 46
is an interlocking mechanism that interlocks the planting mechanism 5 and the seeding rod shutter 43, and has an arm 48 that is pivotally supported by a pin 47 at the lower end of the bracket 26, and this arm 48 is connected to the seeding shutter through a rod 49 and a link 50. 43. Further, the arm 48 has a roller 51 at the upper end, and this roller 51
is urged by a spring 52 so as to come into contact with the swing arm 14. This arm 48 and the parallel link mechanism 27
A link 53 of the elevating mechanism 32 is connected between. The link 53 is connected to the lower end of the arm 48, and
It is connected to the parallel link mechanism 27 via a long hole 54 and a pin 55.

In this case, each time the swing arm 14 of the planting mechanism 5 swings, the seeding shutter 43 opens and closes, and the seeding float 23 moves up and down. Therefore, the forming tool 22 intermittently forms the seeding recesses 30, and the seeds A are sown into the seeding recesses 30 one by one.

(Effects of the Invention) According to the present invention, since the lifting mechanism 32 that raises and lowers the seeding float 23 intermittently is provided, the weir-like embankment portion 42 can be created between the seeding recesses 30, and therefore, the uncovered soil Despite this type, it is possible to prevent the seeds A from moving when entering the water.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, FIG. 2 is a side view of the main parts thereof, and FIG. 3 is a side view of the main parts showing another embodiment. DESCRIPTION OF SYMBOLS 1... Rice transplanter, 5... Planting mechanism, 18... Soilless direct seeding machine, 20... Feeding device, 22... Forming tool, 2
3... Seeding float, 27... Parallel link mechanism, 3
2... Lifting mechanism.

Claims (1)

[Claims] (1) Forming tool 2 is attached to the lower side of the seeding float 23 that can be raised and lowered freely.
2 is provided, and a seeding recess 3 is formed on the rice field using this forming tool 22.
Lifting mechanism 3 that intermittently lifts and lowers a seeding float 23 in an uncovered soil type flooded direct sowing machine that sows seeds A on the ground.
2. A non-covered soil flooded direct seeding machine characterized by: