JPH048736Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a sowing device that mechanically and precisely sows rice seeds in order to raise seedlings in seedling boxes to be planted with a rice transplanter. Concerning configuration.

(B) Prior Art Conventionally, belt-type seeding machines using a belt as a device for taking out and conveying a certain amount of seed rice have been known in the field of seeding devices for seedling boxes. For example, Japanese Patent Application Laid-open No. 58-5103 and Utility Model Publication No. 39-
As in Publication No. 10511.

However, the technique described in Japanese Unexamined Patent Publication No. 58-5103 does not include a technique for tensioning the triangular seeding belt. Also, Jikosho 39-
In Publication No. 10511, the seeding belt is stretched by two rollers, and there is no structure for conveying and sowing seeds using seed conveying holes.

In addition, as another conventional technique, a technique such as that disclosed in Japanese Utility Model Application Laid-Open No. 56-62018 was known. However, these conventional belt-type seeding machines were not equipped with a tension device to greatly loosen the seeding belt and release the tension caused by each roller when stored for long periods of non-use. When I took it out for this purpose, the belt hardened and deformed into a triangular shape, causing a problem where it no longer adhered properly to each roller.

(c) Problems that the invention aims to solve This invention aims to solve the above-mentioned problems of the conventional technology. In particular, the roller below the opening of the hopper, which can loosen the belt most, is configured as a tension roller.

Even if the other two rollers are used as tension/relaxation adjustment rollers, rotating brush shafts, guide sheets, guide sheet pressing plates, etc. are arranged at opposing positions, so even if the tension of the rollers is loosened, Once the sowing belt is caught on these opposing objects, it cannot loosen.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A tension roller 11 is arranged below the lower opening 1a of the hopper 1, an upper roller 10 is arranged diagonally above the tension roller 11, and a belt hole is opened and closed at a lower position between the tension roller 11 and the upper roller 10. A roller 12 is arranged, a seeding belt 2 is wound around the outer periphery of the three rollers in a triangular shape, and the seed rice from the lower opening 1a is inserted into the seed rice conveying hole 2a opened on the outer periphery of the seeding belt 2, In a belt-type seeding machine that transports the seeds via the upper roller 10 to the belt hole opening/closing roller 12, releases the holding state at the seeding position on the seedling box 3, and sows the seeds falling, the tension roller 11 located below the lower opening 1a is used. ,
The seeding belt 2 is movable in the direction of the upper roller 10 so that the seeding belt 2 can be adjusted to a tensioned state during operation and a relaxed state during storage.

(e) Embodiments and operations The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings and the operation of the invention will be explained.

Figure 1 is a left side sectional view of the belt-type seeding machine of the present invention, Figure 2 is a left side view, Figure 3 is a right side view, Figure 4 is a front sectional view, and Figure 5 is a drive motor section. 6 is a perspective view of the seeding belt and three rollers, FIG. 7 is a side view with the scraping brush released, FIG. 8 is a perspective view of the scraping brush 32, and FIG. 10 is a side view of the rotary brush shaft 29 adjusted up and down, FIG. 11 is a perspective view of the branch and stem adhering grain receiving box 35, and FIG. 12 is a plan view showing the arrangement of the seedling box position adjustment spring 77. Figure 13 is a perspective view showing the shape of the draining board and the paddy scraping board, Figure 14 is the front view of Figure 13, and Figure 15 is the same as Figure 13.
The figure is a perspective view showing the state in which the hopper is attached, and FIG. 16 is a perspective view of the hopper hook.

The belt-type seeding machine of this invention has a roller frame 1
9 and the roller frame 19
It extends long from front to back, and in the front there is a soil filling device and water sprinkling device for putting in the soil that will become the seeding bed, and in the back there is a soil covering device to cover the seedling box with soil after sowing. It is.

The seedling box 3 is moved by a box feeding roller 18 on a roller frame 19 in which these devices are arranged side by side, and soiling, watering, sowing, covering with soil, etc. are carried out by the assembly work.

The belt-type seeding machine of the present invention has an outer frame composed of the front and rear side plates, the right side plate 41, the left side plate 42, the upper frame 75, etc., and the hopper 1 is placed on the upper part.
Various shafts and rollers are arranged inside to rotate the seeding belt 2.

In FIG. 1, the hopper 1 is made of transparent synthetic resin and has a hopper hook 16 fixedly attached to the front part and a fitting bolt 30 fixedly attached to the rear part.
It is constructed so that it can be easily installed and removed.

That is, the hopper hook 16 is attached to the upper frame 75.
By inserting the fitting bolt 30 into the engaging hole 75a of the hopper support plate 47, the hopper hook 16 is inserted obliquely in the vertical direction and is locked, so that it is reliably held in the fixed position. It is. It has a structure that allows it to easily come off diagonally upward, but it is securely held downward.

The lower part of the hopper 1 is provided with an opening 1a through which the seed rice falls onto the sowing belt 2 and forms an angle of repose to prevent further fall of the seed rice.

By closing the hopper support plate 47 and the cleaning cover 49 slidably disposed on the hopper support plate 47, the seed rice is dammed so that it does not fall anywhere other than onto the belt. The cleaning cover 49 can be opened to discharge the seed rice remaining inside the machine body after the sowing operation is completed.

The seeding belt 2 is rotated in a triangular shape under tension from the inside by three rollers. They are an upper roller 10, a tension roller 11, and a belt hole opening/closing roller 12. The upper roller 10 has the largest diameter, and the upper roller 10 has a rotating brush shaft 29.
It is rotating facing each other.

When rotating around the upper roller 10, the rice seeds are stored in the rice seed conveying hole 2a of the seeding belt 2 and pass therethrough, so if the rotation radius is too small, the rice seeds will spill out. .

The tension roller 11 is the main part of the present invention, and when the sowing belt 2 is stretched to take up the slack or when the belt-type seeding machine is stored for a long time, the sowing belt 2 can be left stretched in a triangular shape. When working next time, the sowing belt 2 will be formed into a triangular shape due to hardening of the rubber, and the seed conveying hole 2a will not open and close properly at the corner, or the sowing belt 2 will not fit into each roller. Therefore, when stored for a long period of time, the seeding belt 2 is loosened considerably to prevent the seeding belt 2 from being formed into an abnormal shape.

The configuration of the adjustment device for the tension roller 11 is as follows:
As shown in FIG. 3, the tension roller shaft 6, which is the shaft of the tension roller 11, is supported by slide bearing plates 52, 52 that are slidable on the left and right side plates, and the slide bearing plates 52 are moved to the slide guide 53.
Inside, the sowing belt 2 is tensioned and relaxed by moving it back and forth using a belt adjustment bolt 54.

The seeding belt 2 itself is elastic, so it does not suffer from tension or
Although the chain 63 that drives the three rollers may come off the sprocket as the seeding belt 2 loosens, the chain tension roller 68 is used to prevent tension or loosening. The chain is constructed so that it does not slacken.

The chain tension roller 68 is the roller arm 6
9, and is always biased in the tension direction by a biasing spring 70. 42b is a long hole provided in the left side plate 42 for moving the tension roller shaft 6;
42a is a cleaning hole opened in the left side plate 42 to enable cleaning of the inside of the seeding belt 2. Similarly, the right side plate 41 also has a cleaning hole 41a and a long hole 41b.

As shown in FIG. 4, the belt hole opening/closing roller 12 is composed of a belt hole opening/closing roller 12 formed as a single unit and a spacer roller 14 fitted around the belt hole opening/closing roller shaft 7 alternately. Conventionally, the belt hole opening/closing roller 12 was formed integrally with the belt hole opening/closing roller shaft 7 by casting or machining to form a convex portion, but this configuration reduces costs. It is possible.

The seed rice falling onto the seeding belt 2 from the opening 1a of the hopper 1 and constituting the angle of repose moves upwards on the seeding belt 2 and passes through the seed rice conveying hole 2a.
The rice seeds that fit into the rice seed transport hole 2a and do not fit into the rice seed transport hole 2a are scraped off by the scraping brush 32.

The scraping brush 32 is fixed to a scraping brush arm 34 that is pivotally supported by a pivot shaft 33.
When the scraping brush arm 34 is in contact with the spring plate 31 and urged against the upper surface of the seeding belt 2, and when it is released for cleaning, it is held by passing over the fulcrum. It is structured as follows.

The rotary brush 29 is used to remove the stuck grains and the like that protrude from the paddy transfer hole 2a after being scraped off by the scraping brush 32. When the grains attached to the branches and stalks protrude from the rice seed conveying hole 2a, the guide sheet 8 and the sowing belt 2 are held while being conveyed by the guide sheet 8 and the sowing belt 2.
The branches and stems are pinched and pulled out, which causes the seeds to fall in areas that are not intended for sowing, so they are removed. The rotating brush 29 is driven by the rotating brush shaft 17. The grains attached to the branches and stalks scraped off by the rotating brush 29 rotate once and fall into the grain receiving box 35.
When the inside of the grain-receiving box 35 becomes full, it is necessary to take it out, so a transparent cover 38 is placed over the grain-receiving box 35. Further, the branch and stalk-attached grain receiving box 35 is supported by a guide sheet support plate 36. The guide sheet support plate 36 is installed between the right side plate 41 and the left side plate 42,
The upper end of the guide sheet 8 protrudes upwardly from the protrusion. The guide sheet 8 is a synthetic resin sheet, and the lower end is not fixed and is left free.

The guide sheet pressing plate 43 protrudes from the bracket 44 and is pressed against the surface of the seeding belt 2. The rice seeds are held by the guide sheet 8 in the rice seed conveying hole 2a of the sowing belt 2,
When the seed rice is transported to the end of the guide sheet 8 and is no longer held by the guide sheet 8, the seed transport hole 2a is opened by the convex part of the belt hole opening/closing roller 12, and the seed rice falls onto the seedling box 3. .

Between the tension roller 11 and the upper roller 10 of the seeding belt 2, a belt guide 80 is brought into contact from below to prevent the seeding belt 2 from sagging, and between the upper roller shaft 5 of the seeding belt 2 and the belt hole. The space between the opening and closing rollers 12 is held in an arc shape by inner guide roller shafts 37, 71, 72 from the inside and by outer guide roller shafts 73, 74 from the outside, so that the surfaces of the guide sheet 8 and the seeding belt 2 are always in close contact. It is configured as much as possible.

In addition, on the edge 3a of the seedling box 3 before sowing,
If there are water droplets sprayed by a water spray device,
In order to scrape off this, a draining plate 39 supported by a pivot shaft 46 is urged downward by its own weight.

Further, in order to remove the seed rice after sowing from the edge 3a of the seedling box 3, a rice scraping plate 40 supported by a pivot shaft 45 is urged downward by its own weight.

Next, the drive device for the belt-type seeding machine of the present invention will be explained.

In conventional seeding machines, the drive motor is a part of the roller frame 19 and is arranged outside the seeding device, and is configured to drive the box feeding roller 18 and the seeding belt 2 by means of a belt or chain. It was.

In contrast, in the present invention, the drive motor 4
is attached to the inner surface of the left side plate 42 inside the belt-type seeding machine, and the drive motor 4 drives the seeding belt 2 and also drives the box feed roller 18 of the roller frame 19.

With this configuration, since the drive motor 4 is built-in, there is no need to connect it to an external motor for other devices, and it can be mounted on the roller frame 19 of a conventional roll-type seeding machine. A seeding plant can be easily constructed by installing the belt-type seeding machine of the present invention in place of the seeding machine. A sprocket 58 for driving the box feed roller 18 and a sprocket 57 for driving the seeding belt 2 are fixed to the shaft 56 of the drive motor 4. The chain 59 of the sprocket 58 transmits power to the sprocket 60 of the seeder rotation shaft 55, and the power is further transmitted to the sprocket 22 of the box feeding roller shaft 20 through the other sprocket 61 and chain 62 of the seeder rotation shaft 55. There is.

In this configuration, the seeding machine rotation shaft 55 serves as a rotation support shaft that also serves as a counter shaft. The vertical adjustment bolt 50 at the rear of the seeding machine is rotated upward around the seeding machine rotating shaft 55, thereby making it possible to clean the lower part. Further, the seeding machine rotating shaft 55 is pivotally supported by a support frame 21 fixedly installed on the roller frame 19. By fixing the support frame 21 to the roller frame 19 of an old conventional seeding machine with bolts, the belt-type seeding machine of the present invention can be used for precision sowing while leaving other soil filling devices, water sprinkling devices, and soil covering devices as they are. can be placed.

Further, the box feed roller shaft 20 is projected into the left roller frame 19, and there are two
Two sprockets 76 and 79 are fixedly installed to drive the lower box feed roller 18 of another device, which is supported by the roller frame 19.

Next, the drive system for the seeding belt 2 will be explained.

A chain 63 is wound around the sprocket 57 of the shaft 56 of the drive motor 4.
is wound around the sprocket 25 of the upper roller shaft 5, the sprocket 24 of the tension roller shaft 6, and the sprocket 23 of the belt hole opening/closing roller shaft 7. By engaging the outside of the chain 63 with the sprocket 57, the rotation directions of the chain 59 for driving the box feed roller 18 and the chain 63 for driving the seeding belt 2 are reversed. In addition, by arranging the sprocket 23 of the belt hole opening/closing roller shaft 7 at the position closest to the tension side of the sprocket 56 of the drive motor 4, the belt hole opening/closing roller shaft 7, which requires the most accurate rotation, can be rotated with precision. It's getting rotation.

Further, the belt hole opening/closing roller shaft 7 is extended to the outside of the right side plate 41, and a pulley 26 is fixed to the protrusion, and the rotary brush shaft 17 is connected to the round belt 28.
This drives the pulley 27.

The rotating brush shaft 17 is driven by the upper roller shaft 5.
Although it could be taken from the belt hole opening/closing roller shaft 7 in order to obtain higher speed rotation. Further, the rotating brush shaft 17 is connected to the rotating brush rotating arms 6 provided on the left and right side plates.
5, a pivot shaft 66, and an adjustment bolt 67, the axis position can be adjusted up and down, and for this up and down adjustment, there needs to be a sufficient distance for the round belt 28 to extend and contract, and from this point of view, the belt hole Power is extracted from the opening/closing roller shaft 7.

Reference numeral 64 is a sprocket retaining rod, and the sprocket 57 for driving the seeding belt on the shaft 56 of the drive motor 4 can be changed in size to change the seeding density. , the sprocket 57,5
8 is not fixed to the shaft 56, and a sprocket retaining rod 64 placed outside the shaft 56 is placed against the boss of the sprocket to prevent it from coming off.

Further, adjustment brackets 51 are protruded downward from the left and right side plates, and the vertical adjustment bolts 50 screwed into the adjustment brackets 51 are brought into contact with the upper surface of the support frame 21, so that the front and back horizontality of the aircraft body can be obtained. .

Further, a seedling box position adjustment spring 77 protrudes from the inner surface of the support frame 21 toward the side surface of the edge 3a of the seedling box 3, and the amount of protrusion of the seedling box position adjustment spring 77 is adjusted by the seedling box position adjustment bolt 48. Then, seedling box 3
The structure is such that the sowing belt 2 is positioned at an appropriate position relative to the rice seed conveying hole 2a of the seeding belt 2. Since the seedling box position adjustment spring 77 is biased in the direction of returning to the roller frame 19 side, when the seedling box position adjustment bolt 48 is returned, it returns by the force of the spring, so there is no need for a separate return spring as in the conventional case. be. The seedling box position adjustment spring 77 and the seedling box position adjustment bolt 48 are arranged on the left and right sides.

The drive unit explained above has a right side plate 41 and a left side plate 42.
A left drive section cover 15 and a right drive section cover 13 are covered on the left and right sides to hide these drive sections.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, in the case of a conventional belt-type seeding machine, the three rollers that tension the belt from the inside are
Because it was stored for a long time, it was not possible to loosen it significantly, so when the belt was taken out and used after storage, it hardened and deformed under tension, making it difficult to fit into each roller, making it difficult to sow seeds accurately. However, according to the present invention, the most movable roller under the opening of the hopper 1 is used as a tension roller, and by greatly relaxing the belt, the belt can be moved free of other obstructions. Even some parts of the belt were loosened, allowing the belt to be stored in as loose a state as possible, and the belt no longer deformed when stored.

Secondly, since the sliding direction of the tension roller 11 is the direction of the upper roller 10, when the sowing belt 2 is stretched during seeding work, the tension roller 11
1, even if the tension is applied, the distance between the hopper support plate 47 and the seeding belt 2 does not change, so the lower opening 1
This method has the advantage that the state of uptake of rice seeds into a does not change.

[Brief explanation of drawings]

Figure 1 is a left side sectional view of the belt-type seeding machine of the present invention, Figure 2 is a left side view, Figure 3 is a right side view, Figure 4 is a front sectional view, and Figure 5 is a drive motor section. 6 is a perspective view of the seeding belt and three rollers, FIG. 7 is a side view with the scraping brush released, FIG. 8 is a perspective view of the scraping brush 32, and FIG. 10 is a side view of the rotary brush shaft 29 adjusted up and down, FIG. 11 is a perspective view of the branch and stem adhering grain receiving box 35, and FIG. 12 is a plan view showing the arrangement of the seedling box position adjustment spring 77. Figure 13 is a perspective view showing the shape of the draining board and the paddy scraping board, Figure 14 is the front view of Figure 13, and Figure 15 is the same as Figure 13.
The figure is a perspective view showing the state in which the hopper is attached, and FIG. 16 is a perspective view of the hopper hook. 1... Hopper, 1a... Opening, 2... Seeding belt, 2a... Seed conveyance hole, 3... Seedling box, 7...
Belt hole opening/closing roller shaft, 8...Guide sheet,
10... Upper roller, 11... Tension roller,
12... Belt hole opening/closing roller.

Claims (1)

[Scope of utility model registration request] A tension roller 11 is arranged below the lower opening 1a of the hopper 1, an upper roller 10 is arranged diagonally above the tension roller 11, and a belt hole is opened and closed at a lower position between the tension roller 11 and the upper roller 10. A roller 12 is arranged, a seeding belt 2 is wound around the outer periphery of the three rollers in a triangular shape, and the seed rice from the lower opening 1a is inserted into the seed rice conveying hole 2a opened on the outer periphery of the seeding belt 2, In a belt-type seeding machine that transports the seeds via the upper roller 10 to the belt hole opening/closing roller 12, releases the holding state at the seeding position on the seedling box 3, and sows the seeds falling, the tension roller 11 located below the lower opening 1a is used. ,
A belt-type seeding machine, which is movable in the direction of an upper roller 10, and is capable of adjusting a seeding belt 2 to be in a tensioned state during operation and in a relaxed state when stored.