JPH048737Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a belt-type sowing method that mechanically and precisely sows seed rice in order to raise seedlings in a seedling box to be planted with a rice transplanter. This relates to the structure of the machine's guide sheet.

(B) Prior Art Conventionally, a belt-type seeding machine using a belt has been known as a device for taking out and conveying a certain amount of seed rice in a seeding box seeding device. For example, Japanese Patent Application Laid-Open No. 58-5103.

However, in the conventional technology, the rice seed is transported in the part of the sowing belt where most of the seed transport holes face upward, and the seeds are sown in the part where the sowing belt faces downward. There are fewer parts to be transported in the facing position.
Therefore, the portion from the hopper to the seed rice conveying hole has an unreasonable shape, and the seed rice tends to spill out.
Furthermore, since the back side of the seeding belt is not used as a conveyance section, the positions of the three rollers become wider in the front and back direction, making it impossible to make the entire seeding machine short and compact.

Further, as another prior art, there is Japanese Utility Model Application Publication No. 56-62018.

However, in the prior art, when the seed conveying hole of the sowing belt is oriented downward, the device that closes the hole to prevent the seed rice stuck therein from spilling out is constructed of an iron plate. Therefore, over long distances,
It is not possible to transport the seed paddy on the back side of the sowing belt, so in order to transport the captured paddy seeds downward to the top of the seedling box, the sowing belt is arranged in a chevron-shaped triangle and the top surface of the belt is used to transport the captured paddy seeds. I had no choice but to do so. As a result, belt-type seeding machines became longer from front to back.

(c) Problems that the invention aims to solve This invention aims to solve the above-mentioned problems of the conventional technology. When moving upwards, the seed rice is inserted into the seed rice transport hole 2a, and when the sowing belt turns to the back, a guide sheet is brought into contact with this surface to seal the seed rice so that it does not spill out from the seed rice transport hole 2a. Transport from top to bottom,
At the lower end closest to the seedling box, the guide sheet is released and the rice seeds are dropped and sown.

With this configuration, the seeding belt can be arranged diagonally, and the front-rear length of the belt-type seeding machine can be shortened. In this way, when the sowing belt turns to the back side, the guide sheet 8 guides the rice seed conveying hole 2.
In conveyance in a sealed manner, the present invention ensures that the guide sheet is always in close contact with the surface of the sowing belt, prevents the rice seeds from spilling from the seed conveyance hole 2a, and even if the guide sheet stretches due to long-term use, the sowing operation is maintained. It is constructed in such a way that it does not cause any problems.

(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 take-in roller 11 is arranged below the lower opening 1a of the hopper 1, an upper roller 10 is arranged diagonally above the take-in roller 11, and a seeding position roller is placed at a lower position between the take-in roller 11 and the upper roller 10. 12 is arranged, and a seeding belt 2 is wound in a triangular shape around the outer periphery of the three rollers,
While the seeding belt 2, which is arranged diagonally and rotates, moves from the take-in roller 11 to the upper roller 10, the seed rice is inserted into the seed transport hole 2a drilled on the surface, and is transferred from the upper roller 10 to the seeding position roller 12 on the back side. During the downward movement of the sowing belt 2, the guide sheet 8 is conveyed while being in contact with the surface of the sowing belt 2, and the seed rice is dropped at the terminal end of the guide sheet 8. is supported and fixed by a guide sheet support plate 36, and the lower end on the seeding position side is pressed and supported on the surface of the seeding belt 2 by a guide sheet pressing plate 43.

(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, and FIG. 7 is a front sectional view of the guide sheet 8.
FIG.

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, and the seeding belt 2 is rotated inside. Various types of shafts and rollers are arranged.

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, by inserting the hopper hook 16 obliquely from above, it fits into the engagement hole 75a of the upper frame 75, and by fitting the fitting bolt 30 into the engagement hole of the hopper support plate 47, the hopper hook 16 is locked. This ensures that it is held in place. 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, forming 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 rice seeds remaining inside the machine body after the sowing operation is finished.

The seeding belt 2 is tensioned from the inside by three rollers and rotates in a triangular shape. They are an upper roller 10, a take-in roller 11, and a seeding position roller 12. The upper roller 10 has the largest diameter and rotates facing the rotating brush shaft 29. 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 take-in roller 11 is used to take up slack due to stretching of the sowing belt 2, and when storing this belt-type seeding machine for a long period of time, if the sowing belt 2 is left stretched in a triangular shape, the sowing belt will be removed when the next work is carried out. 2 is formed into a triangular shape due to the hardening of the rubber, and the seed conveying hole 2a may not open and close properly at the corners, or the seeding belt 2 may not fit around each roller, so when storing it for a long time, , the seeding belt 2 is loosened greatly to prevent the seeding belt 2 from being formed into an abnormal shape. As shown in FIGS. 2 and 3, the adjustment device for the take-in roller 11 has a slide bearing plate 52, which allows the take-in roller shaft 6, which is the axis of the take-in roller 11, to slide on the left and right side plates.
52, and the slide bearing plate 52 is moved back and forth within the slide guide 53 by a belt adjustment bolt 54, thereby tensioning and relaxing the seeding belt 2.

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 supported by a roller arm 69 and biased by a biasing spring 70.
It is always biased in the direction of tension. 42b is a long hole provided in the left side plate 42 for moving the take-in roller shaft 6, and 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.
is opened.

As shown in FIG. 4, the seeding position roller 12 is constructed by alternately fitting a single seeding position roller 12 and a spacer roller 14 around the seeding position roller shaft 7. Conventionally, the seeding position roller 12 was integrally formed with the seeding position roller shaft 7 by casting or machining to form a convex portion, but this configuration reduces costs. This 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 on a pivot shaft 33, and the scraping brush arm 34 is attached to a spring plate 31.
It is configured so that it is held by passing over the fulcrum both when it is brought into contact with the upper surface of the seeding belt 2 and when it is released for cleaning.

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 and 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 to 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 with attached branches and stalks scraped off by the rotating brush shaft 29 rotate once and fall into the receiving box 35 for grains with branches and stalks. When the inside of the grain receiving box 35 becomes full, it is necessary to take it out, so the transparent cover 3
8 is arranged on the branch and stem attached grain receiving box 35. Further, the branch and stem attached grain receiving box 35 is connected to the guide sheet support plate 3.
6 is supported. Guide sheet support plate 3
6 is installed between the right side plate 41 and the left side plate 42, projects upward, and the upper end of the guide sheet 8 starts from the projecting portion. The guide sheet 8 is a synthetic resin sheet, and the lower end is not fixed.
It's free. The guide sheet pressing plate 43 protrudes from the bracket 44 and is pressed against the surface of the seeding belt 2. The seed rice is held by the guide sheet 8 in the seed conveyance hole 2a of the sowing belt 2, and when it is conveyed to the end of the guide sheet 8 and is no longer held by the guide sheet 8, it is held by the convex part of the sowing position roller 12. This opens the seed transport hole 2a and the rice seeds fall onto the seedling box 3. In the configuration of this embodiment, since the guide sheet press plate 43 is applied from below the lower end of the guide sheet 8, the end of the guide sheet press plate 43 actually becomes the end of the guide sheet 8, and in this part The seed rice is released.

Between the take-in roller 11 and the upper roller 10 of the seeding belt 2, a belt guide 80 is placed in contact from below to prevent the seeding belt 2 from sagging, and the upper roller shaft 5 of the seeding belt 2 and the seeding position The space between the rollers 12 is held in an arc shape by inner guide roller shafts 37, 71, 72 from the inside and 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 with each other. It is structured 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 centered around the seeding machine rotating shaft 55.
The lower part can be cleaned by rotating the part upward. Further, the seeding machine rotation shaft 55 is connected to a support frame 2 fixedly installed on the roller frame 19.
It is supported by 1. The support frame 2
1 is fixed with bolts to the roller frame 19 of an old conventional seeding machine, the belt-type seeding machine of the present invention for precision sowing can be installed while leaving the other soil filling devices, water sprinkling devices, and soil covering devices as they are. It is possible.

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 take-in roller shaft 6, and the sprocket 23 of the seeding position roller shaft 7. By engaging the outside of the chain 63 with the sprocket 57, the chain 59 for driving the box feeding roller 18 and the seeding belt 2 are connected to each other.
The rotation direction of the drive chain 63 is reversed. Also, the sprocket 5 of the drive motor 4
By arranging the sprocket 23 of the seeding position roller shaft 7 at the position closest to the tension side of the seeding position roller 6, accurate rotation of the seeding position roller shaft 7, which requires the most accurate rotation, can be obtained. Further, the seeding position roller shaft 7 is extended to the outside of the right side plate 41, and a pulley 26 is fixed to the protrusion, and a round belt 28 is used to pull the pulley 26 of the rotating brush shaft 17.
7.

The rotating brush shaft 17 is driven by the upper roller shaft 5.
Although it is possible to take the seeding position from the roller shaft 7 in order to obtain higher speed rotation. In addition, the rotating brush shaft 17 can be vertically adjusted in its axis position by a rotating brush rotating arm 65, a pivot shaft 66, and an adjustment bolt 67 provided on the left and right side plates, and a round belt is used for vertical adjustment. 28 is required to have a sufficient distance to extend and contract,
From this point as well, power is extracted from the seeding position 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, but 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, the adjustment bracket 51 is protruded downward from the left and right side plates, and the adjustment bracket 51 is
The vertical adjustment bolt 50 screwed into the support frame 2
The structure is such that it is brought into contact with the top surface of the fuselage 1 and the front and rear of the aircraft are horizontal.

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 located at an appropriate position with respect to the rice seed conveying hole 2a of the seed belt 2. Since the seedling box position adjustment spring 77 is a leaf spring biased toward the roller frame 19, when the seedling box position adjustment bolt 48 is retracted, it returns to its original position due to the spring force. Therefore, there is no need to separately provide a return spring as in the conventional case. 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, the seeding belt 2 is arranged diagonally, and the seed rice is captured while the seed rice conveying hole 2a moves on the upper surface,
When the rice seed conveyance hole 2a is turned to the back side, the rice seed is conveyed in a sealed manner by the guide sheet 8, so that the action of conveying the captured rice seed to the upper part of the seedling box 3 is carried out on the back side of the sowing belt 2, as in the conventional method. This eliminates the need to stretch the seeding belt in a chevron shape, making it possible to shorten the front-to-back length of the belt-type seeding machine.

Second, when the seeding belt 2 rotates, the guide sheet 8 is always stretched, and the guide sheet 8
is always in close contact with the front of the seeding belt 2 in an appropriate state.

Thirdly, even if the guide sheet 8 stretches due to long-term use, by leaving the lower end in a free state with the guide sheet pressing plate 43 pressed, the middle part of the guide sheet 8 will sag, and the sowing belt 2 There will be no space between the two, and reliable transportation will be achieved.

Even when the end of the guide sheet is stretched with an elastic body as in the conventional technique, if the stretch of the guide sheet becomes too large, slack still occurs.

[Brief explanation of the drawing]

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, and FIG. 7 is a front sectional view of the guide sheet 8.
FIG. 1... Hopper, 1a... Opening, 2... Seeding belt, 2a... Seed conveyance hole, 3... Seedling box, 7...
Seeding position roller shaft, 8... Guide sheet, 10
... Upper roller, 11 ... Take-in roller, 1
2... Seeding position roller, 36... Guide sheet support plate, 43... Guide sheet pressing plate.

Claims (1)

[Scope of utility model registration request] A take-in roller 11 is arranged below the lower opening 1a of the hopper 1, an upper roller 10 is arranged diagonally above the take-in roller 11, and a seeding position roller is placed at a lower position between the take-in roller 11 and the upper roller 10. 12 is arranged, and a seeding belt 2 is wound in a triangular shape around the outer periphery of the three rollers,
While the seeding belt 2, which is arranged diagonally and rotates, moves from the take-in roller 11 to the upper roller 10, the seed rice is inserted into the seed transport hole 2a drilled on the surface, and is transferred from the upper roller 10 to the seeding position roller 12 on the back side. During the downward movement of the sowing belt 2, the guide sheet 8 is conveyed while being in contact with the surface of the sowing belt 2, and the seed rice is dropped at the terminal end of the guide sheet 8. is supported and fixed by a guide sheet support plate 36, and the lower end of the sowing position side is pressed and supported on the surface of the sowing belt 2 by a guide sheet pressing plate 43.