JP2005333895A - Precision sowing device for hill seeding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a precision sowing device for hill seeding capable of precisely sowing vegetable seeds and producible at a low cost. <P>SOLUTION: The sowing device is provided with an upper transfer belt 11 and a lower transfer belt 12. The upper transfer belt 11 is slantly installed close to the seed discharging port 4a of a seed hopper 4 along the longitudinal direction of the device raising the front side, circulated in the direction the same as the moving direction of the device and provided with seed holding holes 21 holding nearly definite amount of seeds and bored on the surface at regular intervals. The lower transfer belt 12 is placed under the upper transfer belt 11 to form a double-deck structure with the upper transfer belt and provided with seed holding holes 22 receiving the seeds transferred by the upper transfer belt 11 and bored on the surface at regular intervals. The lower transfer belt 12 is placed opposite to the upper transfer belt and rotated in the direction reverse to the moving direction of the device in a manner synchronized with the motion of the upper transfer belt 11. The seeds held in the seed holding hole 22 are dropped on the field from the transfer end of the lower transfer belt 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a precision sowing apparatus for spot sowing that can plant seeds of plants with high accuracy and can be produced at low cost.

As a device (mechanism) for sowing plant seeds, the following two types are well known as typical sowing mechanisms.
One of them is a seed hopper that accommodates plant seeds, and a seed hopper that is disposed facing a seed outlet that discharges seeds from the seed hopper, and is drilled at a predetermined interval on the surface of the belt in the seed outlet. An endless transport belt that transports seeds stored in the storage hole to the outside of the seed discharge port and seeds the seeds on the field along with the movement of the device from the transport terminal end, for example, in Patent Document 1 It is disclosed.
The other one is a mechanism that uses a suction (vacuum) mechanism and a tube (tube) that is thinner than the seed to be sown, and sucks air from the tube so that the seed is adsorbed to the tip of the tube and is sown in the field. For example, it is disclosed in Patent Document 2.

JP-A-11-187708 JP-A-6-253616

The problems and advantages of the two types of seeding mechanisms (methods) are as follows.
First, in the case of using one endless conveying belt, the seed receiving hole formed in the belt is sized so that only one seed can enter in order to take out one seed at a time. However, since the seed size is not uniform, the seed may be clogged in the seed accommodation hole, and is not discharged (seeded) at regular intervals from the conveyance end of the conveyance belt, and is further conveyed by the belt, Seeds fall at a position deviated from the position to be sown and are sown in a state where the sowing interval is not constant. For this reason, the sowing interval varies, making it difficult to sow at a precise interval and the number of grains. However, since the mechanism for taking out and sowing the seed is constituted by one endless conveying belt, there is an advantage that the structure is simple and can be constructed at low cost.

  Next, a mechanism for adsorbing and taking out seeds in a vacuum state by using a suction (vacuum) mechanism and a suction thin cylinder and sowing the seed requires a vacuum pump and a power source for driving the power source. When using a motor for this, it is necessary to install a battery, and a switching valve mechanism for switching the suction path of the vacuum pump is required, which complicates the mechanism and increases production costs. It was. However, there is an advantage that it is possible to take out seeds one by one with high accuracy and to sow seeds with high accuracy at equal intervals.

  For this reason, there is a need for a seeding mechanism that can be seeded with high accuracy at regular intervals and that can be constructed at low cost.

In order to achieve the above object, the precision seeding device for spot seeding of the present invention is characterized by having the following configuration.
A. A seed hopper that accommodates plant seeds and a seed discharge port that discharges seeds from the seed hopper and is disposed in a seed receiving hole that is formed at a predetermined interval on the surface of the belt. In a belt-type seed sowing device comprising an endless transport belt that transports the seeds out of the seed discharge port and seeds them on the field along with the movement of the device from the transport terminal end,
Facing the seed outlet of the seed hopper, the seed hopper is obliquely installed so that the front is higher and the rear is lower with respect to the front-rear direction of the device, and seed receiving holes for storing a predetermined amount of seeds are formed on the surface at regular intervals. And an upper conveyor belt that rotates in the same direction as the moving direction of the apparatus, and is arranged to overlap the upper conveyor belt below the upper conveyor belt so as to overlap the upper conveyor belt. The seed receiving holes for receiving and storing the seeds conveyed by the above are formed on the surface at regular intervals, faced with the upper conveying belt, and rotated in a direction opposite to the moving direction of the apparatus in synchronization with the holes. A lower conveyor belt for seeding seeds accommodated in the seed accommodation holes from the end to the field.

B. The size of the seed receiving hole of the upper conveyor belt is set to a size that allows one seed to enter, the size of the seed receiving hole of the lower conveyor belt is made larger than the size of the seed receiving hole of the upper conveyor belt, and the seeds The size was not clogged.
C. A seed spillage prevention cover is provided at the upper end portion of the upper conveyor belt so that the seeds accommodated in the seed accommodation holes do not fall out except for the seed accommodation holes of the lower conveyor belt.
D. The seed accommodated and conveyed in the seed accommodation hole at the lower end portion of the lower conveyance belt does not fall while the conveyance belt rotates to a predetermined position, and naturally falls when reaching the predetermined position. A seed drop positioning cover that regulates sowing was provided.

The present invention provides the above-described A. (Claim 1) to C.I. By having the structure of (Claim 3), there can exist the following effects.
A. A. above. With this configuration, the upper conveyor belt accommodates an almost predetermined amount of seed in the seed receiving hole in the seed discharge port of the seed hopper, carries it out of the seed discharge port, conveys it obliquely upward, and seeds from the end of the conveyance. The seed accommodated in the accommodation hole can be transferred to the seed accommodation hole of the lower conveyor belt and conveyed obliquely downward, and the seed can be sown in the field from the end of the conveyance. For this reason, a substantially predetermined amount of seeds can be sown at equal intervals, and a highly accurate sowing operation can be performed. In addition, since the mechanism for taking out seeds from the seed hopper and sowing is composed of only the upper conveyor belt and the lower conveyor belt, the entire sowing mechanism can be constructed at low cost and at low cost.

B. B. above. With this configuration, the size of the seed accommodation hole of the upper conveyance belt is the size of one seed, and the size of the seed accommodation hole of the lower conveyance belt is the size of the seed accommodation hole of the upper conveyance belt. The seeds are larger than the size and do not clog the seeds, and the upper transport belt and the lower transport belt are opposed to each other and rotated synchronously, so that one grain accommodated in the seed accommodation hole of the upper transport belt The seeds can be moved to the seed receiving holes of the lower conveyor belt almost certainly, so that one seed can be sown with high accuracy at a predetermined interval.
C. C. above. With this configuration, the seed stored in the seed receiving hole of the upper conveyor belt is regulated so that it will not spill out except for the seed receiving hole of the lower conveyor belt by the cover for preventing seed spillage at the position where the seed is most likely to spill out. Therefore, the seed accommodated in the seed accommodation hole of the upper conveyance belt can be almost certainly moved to the seed accommodation hole of the lower conveyance belt, and the operation of sowing a predetermined amount of seeds at substantially predetermined intervals, It can be carried out with high accuracy.
D. D. above. With this configuration, when the seed accommodated in the seed accommodation hole and conveyed at the lower end portion of the lower conveyance belt does not fall while the conveyance belt rotates to the predetermined position, the seed reaches the predetermined position. Since a seed drop positioning cover is provided that regulates sowing so as to fall naturally, it can be dropped at a position where there is no influence of the inertial force acting on the seed accommodated in the seed accommodation hole, and a predetermined amount at almost predetermined intervals The operation of sowing seeds can be performed with high accuracy.

The best mode for carrying out the present invention will be specifically described below with reference to the accompanying drawings.
FIG. 1 is a side view of an inclined two-stage belt type seeding device according to the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a partially enlarged plan view of an upper conveyor belt or a lower conveyor belt, and FIG. It is the graph which compared the seeding accuracy of the present invention and the conventional (commercially available) belt type seeder with respect to the seeding accuracy when seeding spinach seeds.

  An inclined two-stage belt type seeding apparatus according to the present invention will be described with reference to FIGS. 1 and 2, reference numeral 1 denotes an upper cassette, and 2 denotes a lower cassette, which are conventionally known and are commercially available as cassettes for inclined belt type seeders. The two cassettes 1 and 2 are installed so as to be inclined so that the front is higher and the rear is lower with respect to the front-rear direction of the apparatus. The position of 2 is fixed so as not to shift.

  A seed hopper 4 for accommodating seeds is attached to the upper side of the upper cassette 1 via a mounting bracket 5, and the upper side of the upper cassette 1 faces the seed outlet 4 a of the seed hopper 4. Not. The lower cassette 2 can be mounted on the cassette support base 7 attached to the main body frame 6 at the lower part, and the upper part is fixed to the main body frame 6 by the fixing thumbscrews 8 so that both cassettes 1 and 2 are attached. Hold in an inclined position. Both cassettes 1 and 2 can be easily attached to and detached from the main body frame 6. The main body frame 6 can be fixed by a hexagonal bar, and is fixed to a fixing base 9. Further, a motor 10 that transmits rotational power to both cassettes 1 and 2 is attached to the fixed base 9.

  An endless upper conveyor belt 11 and a lower conveyor belt 12 are wound around both cassettes 1 and 2 so as to rotate in the direction of the arrow. As shown in FIG. 3, both belts 11 and 12 are configured by continuously mounting cells 13 each having a seed receiving hole 21 or 22 which will be described later. Therefore, it is easy to attach and detach the cell 13 from both cassettes 1 and 2, and it is possible to change the cell 13 according to the size of the seed to be sown and change the upper conveyor belt 11 and the lower conveyor belt 12. It is. In this embodiment, the seed receiving hole 21 of the upper transport belt 11 is a hemispherical shape that is large enough to store one seed, and the seed receiving hole 22 of the lower transport belt 12 is the upper transport belt. 11 hemispheres larger than the 11 seed receiving holes 21. Further, the belts 11 and 12 can be stretched under conditions suitable for sowing work by loosening or tightening the tension screw 14 to move the pulley 15 back and forth.

  Gears 16 and 17 are attached to drive rotation shafts of the upper conveyor belt 11 and the lower conveyor belt 12 of both cassettes 1 and 2 so as to mesh with each other. A gear 18 is attached coaxially with the gear 17, and the gear 18 is in mesh with a gear 19 attached to a drive shaft 20 to which the output shaft of the motor 10 is connected. Therefore, when the drive shaft 20 is rotated by the motor 10, the drive rotation shaft of the lower conveyor belt 12 is rotated via the gears 19 and 18, and the lower conveyor belt 12 is rotated in the direction of the arrow in FIG. Simultaneously with this rotation, the drive rotation shaft of the upper conveyor belt 11 is rotated via the gears 17 and 16, and the upper conveyor belt 11 is rotated in the direction of the arrow opposite to the lower conveyor belt 12. .

  The seed receiving hole 21 of the upper conveyor belt 11 has a hemispherical shape that is approximately the same size as the seed to be sown, and the seed receiving hole 22 of the lower conveyor belt 12 is the seed to be sown. It has a hemispherical shape that is considerably larger than the size of. And the drilling interval of the seed accommodation hole 21 of the upper conveyance belt 11 and the drilling interval of the seed accommodation hole 22 of the lower conveyance belt 12 are the same, and the length of the upper conveyance belt 11 is also the same. The number of the seed accommodation holes 21 is the same as the length of the lower conveyor belt 12 and the number of the seed accommodation holes 21. Further, an upper spill preventive cover 23 is provided at the upper end of the upper conveyor belt 11 to prevent the seeds contained in the seed receiving holes from spilling out. Seed drop positioning is performed so that seeds housed and transported in the housing hole 22 do not fall while the transport belt 12 rotates to a predetermined position, and when the seed reaches the predetermined position, the seed drops are naturally dropped and seeded. A cover 24 is provided. In addition, the prevention tool (for example, brush) which prevents that a seed rides on the conveyance belt 11 other than entering the seed accommodation hole 21 is provided in the upper end position where the conveyance belt 11 above the seed discharge port 4a comes off. May be.

  As described above, in the present invention, a seed hopper that accommodates plant seeds and a seed discharge port that discharges seeds from the seed hopper are disposed at predetermined intervals on the surface of the belt. It is premised on a belt-type seeding device that includes an endless transport belt that transports seeds stored in the drilled seed storage hole to the outside of the seed discharge port and seeds the seeds on the field with the movement of the device. As a technique, facing the seed discharge port 4a of the seed hopper 4, the seed receiving hole 21 is obliquely installed so that the front is high and the back is low with respect to the front-rear direction of the device, and a substantially predetermined amount of seed is stored on the surface. Are arranged at regular intervals, and are arranged so as to overlap the upper conveying belt 11 rotating in the same direction as the movement direction (arrow) of the apparatus and the lower side of the upper conveying belt 11 in two stages. On the upper conveyor belt 11 The seed receiving holes 22 for receiving and storing the transferred seeds are bored on the surface at regular intervals so that the seed receiving holes 21 and 22 of the upper transport belt 11 are opposed to each other and synchronized. A lower conveyor belt 12 that rotates in the direction opposite to the moving direction of the apparatus and seeds the seeds accommodated in the seed accommodation holes 22 from the end of conveyance in the field.

Further, in the present invention, the size of the seed accommodation hole 21 of the upper conveyance belt 11 is set to a size that allows one seed to enter, and the size of the seed accommodation hole 22 of the lower conveyance belt 12 is set to the size of the upper conveyance belt 11. The seed receiving hole 21 is larger than the seed receiving hole 21 and the seed is not clogged.
Further, in the present invention, seed spillage prevention is performed so that the seed accommodated in the seed accommodation hole 21 at the upper end portion of the upper conveyance belt 11 does not fall out except for the seed accommodation hole 22 of the lower conveyance belt 12. The cover 23 is provided, and seeds accommodated in the seed accommodation hole 22 and conveyed at the lower end portion of the lower conveyance belt 12 may fall while the conveyance belt 12 rotates to a predetermined position. Rather, a seed drop positioning cover 24 is provided to restrict the seed so as to fall naturally when it reaches a predetermined position.

Next, the operation of the inclined two-stage belt type seeding device configured as described above will be described.
First, seeds to be seeded are put in the hopper 4 and when the motor 10 is turned on, the drive shaft 20 rotates to rotate the drive rotation shaft of the lower conveyor belt 12 via the gears 19 and 18, The conveyor belt 12 is rotated in the direction of the arrow. Simultaneously with the rotation of the lower conveyor belt 12, the drive rotation shaft of the upper conveyor belt 11 is rotated via gears 17 and 16, and the upper conveyor belt 11 is in the direction opposite to the lower conveyor belt 12. It rotates in synchronization with the direction. The upper conveyor belt 11 moves obliquely upward with its conveyance surface facing the seed discharge port 4 a of the seed hopper 4.

  While the transport surface of the upper transport belt 11 moves obliquely upward facing the seed discharge port 4a, the seeds in the hopper 4 are stored one by one in the various child storage holes 21 and pass through the seed discharge port 4a. Then, it is conveyed upward in the inclination. When the seed accommodated in the seed accommodation hole 21 reaches the conveyance end portion of the upper conveyance belt 11 and the upper conveyance belt 11 reaches a position facing the lower conveyance belt 12, seeds fall out from the seed accommodation hole 21. In this manner, it falls into the seed accommodation hole 22 of the lower conveyor belt 12. And the seed accommodated in the seed accommodation hole 22 is conveyed to the conveyance termination | terminus part of the lower conveyance belt 12, falls naturally to a farm field, and is sown.

  Even when the seed accommodated in the seed accommodation hole 21 is difficult to fall naturally, the belts 11 and 12 move in a considerably long distance in a state of facing each other. The seed accommodated in the hole 21 almost certainly falls into the seed accommodation hole 22. Further, a seed spillage prevention cover 23 is provided at the upper end portion of the upper conveyor belt 11 so that the seeds accommodated in the seed accommodation holes 21 do not fall out except for the seed accommodation holes 22 of the lower conveyance belt 12. Therefore, the seeds do not fall off from the seed receiving holes 22, the seeds almost certainly fall into the seed receiving holes 22, and a seed drop positioning cover 24 is provided at the lower end portion of the lower conveying belt 22. Since it is provided, the position where the seed falls from the seed receiving hole 22 becomes constant, and one seed can be sown at a predetermined interval with high accuracy.

  A seed sowing device (machine) for spot sowing according to the present invention was prototyped and attached to a support base, the motor 10 was turned on, and sowing work was performed using spinach seeds. The results are shown in the graph of FIG. 4 in comparison with the results of the seeding operation using a commercially available belt type seeder under the same conditions. As is apparent from this graph, it was confirmed that the seeding machine for spot seeding according to the present invention can be seeded at equal intervals than the commercially available belt type seeding machine. The seeding setting interval of the seeder was 5.5 cm, and the working speed was 0.36 m / s.

  From the above test results, it was found that by using the precision seeding machine for spot seeding according to the present invention, it is possible to carry out sowing work with a high precision and uniform sowing amount and sowing interval even though it is a simple sowing mechanism.

  With the precision sowing apparatus for spot sowing according to the present invention, plant seeds can be spotted with high precision at predetermined grains and at predetermined intervals. In addition, the device can be manufactured at low cost.

1 is a side view of an inclined two-stage belt type seeding device according to the present invention. It is the same rear view. FIG. 6 is a partially enlarged plan view of an upper conveyor belt or a lower conveyor belt. It is the graph which compared the sowing precision at the time of sowing a spinach seed with the sowing machine of the present invention and the conventional belt type sowing machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper cassette 2 Lower cassette 3 Connection frame 4 Seed hopper 4a Seed discharge port 5 Mounting bracket 6 Main body frame 7 Cassette support stand 8 Fixing thumb screw 9 Fixing stand 10 Motor 11 Upper conveyance belt 12 Lower conveyance belt DESCRIPTION OF SYMBOLS 13 Cell 14 Tension screw 15 Pulley 16-19 Gear 20 Drive shaft 21 Seed receiving hole of upper conveying belt 22 Seed receiving hole of lower conveying belt 23 Seed falling prevention cover 24 Seed falling positioning cover

Claims (4)

A seed hopper that accommodates plant seeds and a seed discharge port that discharges seeds from the seed hopper and is disposed in a seed receiving hole that is formed at a predetermined interval on the surface of the belt. In a belt-type seed sowing device comprising an endless transport belt that transports the seeds out of the seed discharge port and seeds them on the field along with the movement of the device from the transport terminal end,
Facing the seed outlet of the seed hopper, the seed hopper is obliquely installed so that the front is higher and the rear is lower with respect to the front-rear direction of the device, and seed receiving holes for storing a predetermined amount of seeds are formed on the surface at regular intervals. And an upper conveyor belt that rotates in the same direction as the moving direction of the apparatus, and is arranged to overlap the upper conveyor belt below the upper conveyor belt so as to overlap the upper conveyor belt. The seed receiving holes for receiving and storing the seeds conveyed by the above are formed on the surface at regular intervals, faced with the upper conveying belt, and rotated in a direction opposite to the moving direction of the apparatus in synchronization with the holes. A precision sowing apparatus for spot sowing, comprising: a lower conveyor belt for sowing seeds accommodated in a seed accommodation hole from the end.   The size of the seed receiving hole of the upper conveyor belt is set to a size that allows one seed to enter, the size of the seed receiving hole of the lower conveyor belt is made larger than the size of the seed receiving hole of the upper conveyor belt, and the seeds 2. The precision seeding device for spot seeding according to claim 1, wherein the size is set so as not to clog.   A seed spill prevention cover is provided at the upper end portion of the upper conveyor belt so that the seeds accommodated in the seed accommodation holes are not spilled other than the seed accommodation holes of the lower conveyor belt. Item 3. A precision seeding device for spot seeding according to item 1 or 2.   The seed accommodated and conveyed in the seed accommodation hole at the lower end portion of the lower conveyance belt does not fall while the conveyance belt rotates to a predetermined position, and naturally falls when reaching the predetermined position. 4. A precision seeding device for spot seeding according to claim 1, further comprising a seed drop positioning cover for restricting sowing.

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