JPH032484B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a seeding device that is attached to a combine harvester and is capable of performing seeding operations simultaneously with harvesting operations using the combine harvester.

[Conventional technology]

In the cropping system of agricultural crops, for example, when continuous double crops such as wheat and rice or wheat and soybeans are carried out, the harvesting of wheat and direct sowing of rice, and the harvesting of wheat and sowing of soybeans occur at the same time and overlap, so labor is reduced. Not only is a peak formed, but this work period falls during the rainy season, so the suitable period for work is short and unstable.
As a means to eliminate this work peak, by directly sowing rice or sowing soybeans at the same time as wheat harvest, we have installed a sowing device that stabilizes agricultural work, sows at the right time, and saves labor. Combine harvesters have been proposed, for example, in Japanese Utility Model Application Publications No. 170920/1982 and Japanese Unexamined Utility Model No. 8514/1989.

[Problem to be solved by the invention]

In the above-mentioned prior art, since seeds are sown at the same time as harvesting with a combine harvester, no-tillage sowing is the keynote, and several problems have arisen from the viewpoint of work accuracy. For example, when forming the seeding groove,
There is a need for a furrowing machine that is suitable for relatively hard soils containing a lot of organic matter, that does not cause uneven seeding depth, and that does not impair the straightness of the combine harvester due to lateral forces generated in the furrowing.

In addition, when harvesting wheat using a simultaneous harvest sowing machine,
Wheat rows (rows) are not necessarily evenly spaced and may be meandering, so operators must drive in accordance with the wheat rows. This could also result in excessive twisting motion being applied to the parts, which could lead to malfunctions. Also, even if you try to sow at a certain depth,
It is difficult to adjust the cutting height by pitching the combine harvester due to the undulations and irregularities of the field, and with conventional work equipment, it requires skill to operate and is highly tiring for the operator. Furthermore, the method of mounting a seeding machine is not necessarily simple; some seeding machines have a weight added to improve the accuracy of groove-cutting, making manual operation difficult and requiring a hydraulic cylinder to be attached. In addition, this method requires an auxiliary worker to confirm that the seeds are being sown, as the sowing, covering with soil, and covering the sowing area with cut wheat rods are carried out at the same time. Various problems arose.

The present invention solves the above-mentioned problems of the conventional technology, and is attached to a combine harvester that achieves high sowing accuracy, completely eliminates the need for assistants, enables timely work, and realizes stable agricultural work. The present invention aims to provide a seeding device that does the following:

[Means to solve the problem]

In order to achieve this object, the present invention provides a seeding device that is removably installed in place of the divider device provided in front of the reaping section of a combine. 25, and a vertical movement tracking device 22 is provided, which is located at the back of the grass divider 5 provided at the tip of the fuselage, and is supported horizontally by a support shaft 8 so as to be rotatable in the horizontal direction. A disk 7 is pivotally supported on the support arms 10, 10 via pins 11, and groove opening plates 13, 13 are provided on both left and right sides of the lower part of the disk 7 to form a groove forming section 6 that follows the direction of movement of the combine harvester. A sowing section is provided behind the plowing groove section 6 to feed out the seeds stored in the seed hopper 14 by a seed dispensing section 15 driven by a DC motor 16 and sow the seeds from the seed conduit 17 into the sowing groove. A feature is that a suppression ring 19 is provided at the rear of the soil cover 17 and also serves as a soil cover that can be adjusted up and down.

[Effect]

With the above configuration, the seeding device can be easily attached to and removed from the divider section of the combine, moves up and down independently independently of the up and down movement of the combine, and the disc and groove opening plate rotate left and right to remove organic matter. Even if there is a large amount of relatively hard soil, the seeding depth will not be uneven, and the straightness of the combine will not be deteriorated due to lateral forces generated during operation. In addition, the seeds are delivered accurately, and the soil covering and compaction work by the compaction wheel is also performed accurately.

〔Example〕

The invention will now be described with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes a well-known self-removal type combine harvester, and a sowing device 3 is attached to a divider attachment part 2 at the front of this combine 1 with a divider (not shown) removed. ing.

As shown in detail in FIGS. 2 and 3, the seeding device 3 is provided with a weeding rod 5 at the tip of the main body frame 4. This weeding rod 5 is indispensable for eliminating the covering of the planned sowing area with lodging crops and for supplementing each function after furrowing work. The lower end is set low enough to touch the ground, has a triangular planar shape with an acute point, and is attached to the main body frame 4 in a rearwardly inclined manner. A groove forming section 6 is provided at the rear of the grass dividing rod 5. The groove cutting unit 6 rotates a disk 7 capable of cutting grooves in the horizontal direction via a support shaft 8 at the front part of the main body frame 4, targeting hard uncultivated land where organic materials are scattered on the surface of the harvest field. A pair of left and right support arms 10, 10 whose tips are fixed to a hollow cylindrical ring 9 which is rotatably supported, is rotatably supported via a pin 11. teeth,
Grooved plates 13, 13 are fixed to the support arms 10, 10 via connecting pieces 12, 12. The grooved plates 13, 13 have a disc 7 at the tip end.
The rear portion thereof is spaced symmetrically from the disk 7 to the left and right so as to open a groove.

Therefore, even if the traveling direction of the combine changes, the groove forming section 6 is configured so that the disk 7 remains in the pin position while the support arm 10 rotates left and right via the hollow cylindrical ring 9 and the support shaft 8 to follow the movement. It rotates around 11 to cut grooves in the soil, and grooves are created by groove opening plates 13, 13. The lateral reaction forces are balanced by the grooved plates 13, 13, so that they do not impede the straightness of the combine harvester. In addition, the groove opening plate 13,
Since the tip of 13 is in contact with the side surface of the disk 7, it also functions as a scraper for scraping off soil adhering to the side surface of the disk 7.

A seed hopper 14 is provided on the main body frame 4 behind the groove-making section 6, and a seed dispensing section 15 is provided at the bottom of the seed hopper 14, and the seed dispensing section 15 is driven by a DC motor. It's becoming like that. Note that the type of the seed feeding section is not limited to the roll type, but may be of other types.

A seed conduit 17 is provided below the seed feeding section 15.
The seed conduit 17 is provided with an optical sensor 18 that detects the seeds passing through the conduit using natural light and converts it into an electrical signal. This optical sensor 1
No. 8 has a structure in which if there are no seeds falling, a buzzer will sound an alarm to notify the operator.

At the rear of the seed conduit 17, a suppression ring 19 is pivotally supported in a long hole 20 provided in the main body frame 4 with a screw 21 so as to be able to adjust its vertical movement. This suppression ring 19 is
It has a middle-split shape and serves both to cover and compact the seeds sown in the seeding furrow, and by moving up and down with a screw 21, the furrow cutting and seeding depth can also be adjusted.

Further, a link-shaped vertical motion tracking device 22 is provided at the rear of the main body frame 4 to follow the vertical movement of the combine when connected to the combine harvester. Following device 2
2 has tension springs 23, 23 stretched in two stages, upper and lower. At the rear end of this vertical motion tracking device 2,
A mounting portion 24 for attaching and detaching the combine harvester is provided, and a detachable nut 25 is provided to the attaching portion 24.

The seeding device 3 configured as described above is attached to the divider attachment portion 2 of a combine harvester as shown in FIG. 1 with the divider removed. and,
Seeds such as rice or soybeans are placed in the seed hopper, and by operating the combine harvester 1, wheat is harvested simultaneously with sowing of rice or soybeans.

At this time, in the seeding device 3, the lying wheat is raised by the cutting rod 5, and the wheat that is standing is branched left and right, and is supplied to the combine harvester 1 for processing. In the groove making section 6, a disk 7 rotating around a pin 11 cuts vertical grooves in the soil between the rows of wheat, and the cut grooves are cut into a predetermined width by left and right groove opening plates 13. Open to form a seeding furrow (bed). In addition, the support arm 10 supporting the disc 7 and the groove opening plate 13 is rotatable in a predetermined range in the left and right direction by the hollow cylindrical ring 9 and the support shaft 8 at the tip, so that the running direction of the combine harvester can be adjusted. Even if there is some change, the supporting portion of the disk 7 will not be damaged by excessive force. Seeds fed out from the seed feeding section 15 are guided to the seed conduit 17 and sown in the seeding groove, and the falling state of the seeds is detected by the optical sensor 18 and notified to the operator who is hoisting the combine harvester 1. . The sowing groove in which the seeds have been sown is covered with soil and compressed by the compression wheel 19. In addition, since the suppression ring 19 is in the shape of a chain, the suppression trace becomes medium-height, resulting in good drainage performance.

Even if the cobine 1 moves up and down during work, the up and down movement is absorbed by the up and down movement tracking device 22 and the tension spring 23, and the sowing device 3 sows the seeds at the sowing depth determined by the up and down setting position of the suppression wheel 19. Able to perform work.

Although the seeding device in the above embodiment is equipped with only a seeding mechanism, the same effect can be achieved even if a fertilization mechanism and a chemical dispersion mechanism are incorporated into this seeding device.

〔Effect of the invention〕

As explained above, according to the seeding device mounted on a combine harvester according to the present invention, the following effects can be achieved.

(b) Multiple seeding devices can be attached to the combine depending on the cutting width, improving work efficiency. Further, the seeding device can be easily attached to and detached from the combine harvester in a short time.

(b) Even in no-tillage fields where the soil is hard and there are many weeds on the ground surface, it is possible to form seeding furrows of a certain depth. In addition, soil covering and compaction work can be carried out reliably.

(c) Even if the combine harvester's running direction changes, the disc that has dug into the ground follows the combine's travel direction while rotating from side to side, so no excessive force is applied and the machine body is not damaged. Furthermore, the formation of the seeding groove is never interrupted.

(d) Since a ground drive wheel is not used for the driving power of the seed dispensing section, the seeds are reliably dispensed. Therefore, highly accurate seeding work can be stably performed.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted side view showing an embodiment of the present invention, FIG. 2 is a side view of a seeding device, and FIG. 3 is a plan view thereof. 1... Combine harvester, 2... Divider mounting part, 3
... Seeding device, 4 ... Main frame, 5 ... Grass division rod, 6 ... Groove section, 7 ... Disc, 8 ... Support shaft, 9
...Hollow cylindrical ring, 10...Support arm, 11...
Pin, 12... Connecting piece, 13... Groove plate, 14
...Seed hopper, 15...Seed feeding section, 16...
... DC motor, 17 ... Seed conduit, 18 ... Optical sensor, 19 ... Suppressing wheel, 20 ... Long hole, 21 ...
Screw, 22...Vertical movement follower, 23...Tension spring, 24...Mounting portion, 25...Detachable nut.

Claims (1)

[Scope of Claims] 1. A seeding device that is detachably installed in place of a divider device provided in front of a reaping section of a combine, in which a mounting portion 24 is attached to and detached from a divider attachment portion 2 by an attachment/detachment nut 25. At the same time, a vertical movement tracking device 22 is provided, and a support arm 10 is located at the back of the weeding rod 5 provided at the tip of the machine body and is supported horizontally by a support shaft 8 so as to be rotatable. , 10, a disk 7 is pivotally supported via a pin 11, and groove opening plates 13, 13 are provided on both left and right sides of the lower part of the disk 10 to form a groove forming section 6 that follows the direction of movement of the combine harvester. A seeding section is provided at the rear of the groove section 6 for dispensing the seeds stored in the seed hopper 14 by a seed dispensing section 15 driven by a DC motor 16 and sowing the seeds from the seed conduit 17 into the seeding groove. A seeding device to be attached to a combine harvester, characterized in that a suppressing ring 19 that also serves as a soil cover that can be adjusted up and down is provided.