JP2002315409A - Direct seeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately sow seeds in clusters in a field by solving problems that, when the seeds are delivered to the field in a row, seedlings grow in an overcrowding state with contacting in rows to each other during growing after germination, thus, the bad ventilation causes a bad growth, and neighboring seedlings are easily infected when diseases and pest insects outbreak. SOLUTION: The seeder feeds the seeds acceleratingly discharged downward from a seed-releasing device 37 to the guide of a seeding ditching machine 38, a guide plate 67 is made to vary a guide area for guiding the seeds by moving the plate forward and backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material discharger such as a fertilizer or a seeder.

[0002]

2. Description of the Related Art There is a sowing machine which feeds out seeds of a seed hopper in a seed feeding section and transfers the seeds to a groove generator by pressure air generated by a blower.

[0003]

In the above-mentioned prior art, the seeds fed in the seed feeding section are transferred to the groove generator by the pressure air from the blower. The seeds are transferred in a continuous state during the transfer to the air (while the air is transported over a long distance), and are transferred to the field in a row. Then, when the seedlings germinate and grow, the seedlings grow in an overcrowded state in which the seedlings are in contact with each other in a row, and poor ventilation is likely to cause poor growth. There is also a problem that when a disease or pest occurs, it is easily transmitted to an adjacent seedling.

[0004] It is an object of the present invention to accurately sow seeds in a field.

[0005]

SUMMARY OF THE INVENTION In order to solve such a technical problem, according to the present invention, seeds accelerated downward from a discharge device and supplied to a guide of a groove maker are supplied to a field. A seeding machine that is capable of changing a guide area for guiding seeds.

[0006]

According to the present invention, the seeding machine discharges the seed while accelerating downward and supplies the seed to the guide of the groove generator, so that the seed is intermittently seeded in the field. And since the guide area of the guide body of the groove generator can be changed, seeds can be prevented from being scattered and supplied to the field, and can be properly seeded on the field.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 shows a fertilizer / seeding machine 2 equipped with a fertilizing device 1 for applying a granular fertilizer to a sowing machine for sowing seed rice directly in a paddy field. The fertilizer sowing machine 2 is mainly composed of a riding type traveling body 3, eight fertilizer applicators 1 and a sowing apparatus 4.

[0008] The traveling vehicle body 3 is provided with left and right front wheels 5,5 and left and right rear wheels 6,6. The front wheel final case 8, on the left and right sides of the mission case 7 arranged at the front of the fuselage
The left and right front wheels 5, 5 are attached to front wheel shafts projecting laterally from the lower portions of the front wheel final cases 8, 8. Further, the front end of the main frame 9 is fixed to the rear part of the transmission case 7, and the rear wheel gear case 10, 10 can be freely rolled at the center of the rear end of the main frame 9 with the horizontal rear wheel rolling shaft as a fulcrum. The left and right rear wheels 6, 6 are mounted on a rear axle that supports and then projects laterally from the rear wheel gear cases 10, 10.

The engine 11 is mounted on the main frame 9,
The rotational power is taken out to an engine output shaft protruding from the left side surface of the engine 11, the rotational power is transmitted to the drive shaft of the hydraulic pump 12 a via the first belt transmission device 12, and further, a second continuously variable transmission is possible. The power is transmitted to the transmission case 7 via the belt transmission 13.

[0010] The rotational power transmitted to the transmission case 7 is shifted by a main transmission (not shown) in the case, branched into running power and work machine power, and taken out, and the running power is passed through the front wheel final cases 8,8. To the left and right front wheels 5, 5 and to the left and right rear wheels 6, 6 via the rear wheel gear cases 10, 10. In addition, the power of the working machine is taken out from the PTO shaft and transmitted to the fertilizer applicator 1, and further transmitted to the seeding apparatus 4 via the work machine transmitting shaft 15 which can be freely bent, thereby driving the operating section.

An upper part of the engine 11 is covered with an engine cover 16.
A cockpit 17 is provided on the engine cover 16. A steering wheel 18 for steering the left and right front wheels 5, 5 is provided in front of the cockpit 17. An elevating link device 19 is provided at the rear of the traveling vehicle body 3. The lifting link device 19 has a parallel link configuration and includes one upper link 19a and a pair of left and right lower links 19b, 19b. A link front frame 20 having the bases of these links 19a, 19b, 19b erected at the rear end of the main frame 9.
And a link rear frame 21 is connected to the distal ends of the links 19a, 19b, 19b. Then, the seeding apparatus 4 is mounted on the frame 21 after linking so as to freely roll left and right via a rolling shaft 21a.

A hydraulic elevating cylinder 23 is interposed between the support member fixed to the main frame 9 and the tip of the swing arm 22 integrally formed with the upper link 19a. Link 19a
Is rotated up and down, and the seeding device 4 connected to the frame 21 after linking is moved up and down in a substantially constant posture. The hydraulic lift cylinder 23 is a hydraulic lift valve (not shown) provided on the traveling vehicle body 3.
Is controlled to expand and contract.

The fertilizer applicator 1 includes a fertilizer hopper 24 for storing granular fertilizer, a plurality of fertilizer feeding sections 25 for feeding a predetermined amount of fertilizer in the fertilizer hopper 24, and a fertilizer fed from the fertilizer feeding section 25. A plurality of fertilizer guide pipes 26 for flowing down, a fertilizer air chamber 27 for supplying pressurized air to the fertilizer guide pipes 26, and a fertilizer blower 28 for supplying pressurized air to the fertilizer air chamber 27 are provided.

The fertilizer applicator 1 includes a fertilizer feeding section 25.
The fertilizer fed out from is dropped and supplied to the fertilizer guide tube 26,
The structure is such that the fertilizer is sent to a plurality of fertilizer application sections 29 through the fertilizer guide pipes 26 and the plurality of second fertilizer guide pipes 26a by the pressurized air from the fertilization air chamber 27.

The fertilizer application section 29 is connected to a fertilizer guide pipe 26a via a boot 30, and is attached to a leveling float 31 for leveling a field scene. Fertilizer application section 2
A fertilizer application groove device 32 is provided in front of 9, and a groove is formed by the fertilizer application groove device 32 by advancing the body, fertilizer is supplied from the fertilizer application section 29, and soil is covered by a fertilizer cover soil device (not shown). .

Next, the seeding device 4 will be described. Below the seeding device 4, two center leveling floats 31
, and left and right side leveling floats 31b,..., and these leveling floats 31a,.
b,... have a configuration in which the front-back inclination posture can be freely changed, and is a configuration in which the field scene is slid and leveled during the seeding operation.

The sowing section of the sowing apparatus 4 is a seed hopper 34 for storing seeds, a plurality of seed feeding sections 35 for feeding a predetermined amount of seeds in the seed hopper 34, and a seed flowing down from the seed feeding section 35. A plurality of seed first guide pipes 36, a plurality of seeds (about three seeds) fed to the first seed guide pipes 36, receiving the seeds, accelerating downward and releasing the seeds one by one Device 37 ... and the seed release device 3
7 comprises a seed second guide pipe 39 for guiding the seeds accelerated from 7 to the sowing device 38.

Reference numeral 41 denotes a seed sensor (granular material sensor) for detecting the falling of the seed, which is provided in the seed guide section 40 above the sowing groves 38. However, when mud or seeds are clogged in the seed guide unit 40 and cannot be sown, or when the seeds are clogged in the upper seed feeding unit 35 and cannot be sown, it is detected that the seeds are not sown, and the work is performed. This is for issuing an alarm to the operation panel 50 in front of the driver. When this warning is issued, the operator immediately stops the machine, checks and repairs the abnormal part, and resumes the seeding operation.

With the above structure, the seed releasing device 37 disposed near the upper part of the seeding and producing device 38 once receives the seeds fed from the seed feeding portion 35 and releases the seeds while sequentially accelerating downward and releasing the seeds. Tube 39 ... and seeding sulcus 3
8 so that the seeds are intermittently sown so as to be buried in the soil of the field, so that the seeding operation in a point sowing state can be favorably performed.

The seeding apparatus 4 includes a base frame 51 that rolls around the rolling shaft 21a with respect to the linked frame 21. A float support frame 52 long to the left and right is fixed to the base frame 51, and each of the leveling floats 31a and 31b is rotatable around a shaft 53a in the left and right direction on each float support arm 53 fixed to the float support frame 52. Is provided. At the left and right central portions of the float support frame 52, two left and right upper and lower frames 54 extending upward from the frame 52 are provided. A mounting base plate 56 having mounting holes 56a into which mounting bolts 55 can be inserted is fixed to the upper and lower frames 54 at two upper and lower positions. The mounting hole 56a is formed as a vertically long hole. On the other hand, seed hopper 3
4. A left and right long hopper supporting frame 57 for supporting the seed feeding section 35, the first seed guiding pipe 36, the seed releasing device 37, and the second seed guiding pipe 39 is provided. The left and right two seeding attachment plates 58
Is stuck. The upper and lower two
Seeding attachment holes 58a into which the attachment bolts 55 can be inserted are provided at several places. The sowing attachment hole 58a is provided on the right sowing attachment plate 58 with an attachment bolt 5
Although the hole is a true circular hole having substantially the same diameter as that of the hole 9, the hole provided on the seeding attachment plate 58 on the left side is formed as a long hole long in the front and back. A mounting bolt 55 is inserted into the mounting hole 56a and the seeding mounting hole 58a, and a mounting nut 60 is inserted.
To fix the seeding attachment plate 58 to the attachment base plate 56. still,
The sowing groves 38 are fixedly provided on the respective leveling floats 31a and 31b.

Therefore, the mounting hole 5 of the mounting base plate 56
6a is formed as a vertically long slot, so that the seed hopper 34, the seed feeding section 35, the seed first guide tube 36, the seed release device 37, and the seed second guide tube 39 are positioned at appropriate vertical positions. It can be mounted while adjusting. The adjustment bolt mounting plate 6 fixed to the two upper and lower frames 54
1, the upper and lower adjustment bolts 62 are respectively attached, and with the mounting bolts 59 and the nuts 60 loosened, the tips of the left and right adjustment bolts 62 are brought into contact with the lower ends of the respective left and right seeding mounting plates 58. Adjustment bolt 6
2, the vertical position of the hopper support frame 57 and the horizontal inclination posture are adjusted, and then the mounting bolt 59 and the nut 60 can be tightened and fixed. Further, since the seeding attachment hole 58a of the left seeding attachment plate 58 is formed as a long hole in the front and rear direction, the hopper support frame 57 can be viewed from above with the right attachment base plate 56 and the attachment portion of the seeding attachment plate 58 as the center. Can be fixed while finely adjusting the angle with respect to the traveling direction of the aircraft at an appropriate angle. The seed hopper 34, the seed feeding section 35, the seed first guide tube 36, the seed discharge device 37, and the seed second guide tube 39 ... can be mounted while being adjusted to the proper front-rear position. In this way, the seed second guide pipe 39 of each section ...
Of the seed release devices 37.
Can be smoothly guided to the sowing groomer 38 so as not to scatter the vigorously released seeds, and the spot sowing to the field can be performed accurately and satisfactorily.

The seeding groove generator 38 is a front groove forming projection 64.
And a seed discharge unit 65 on the rear side. The seed discharging portion 65 is a U-shaped guide member 6 which is open rearward and has a planar view.
6 and a guide plate 67 provided so as to close the open portion on the rear side of the guide body 66. The guide body 66 is formed in a tapered shape so that the right and left width becomes narrower as it goes downward, and the guide plate 67 is also made so that the right and left width becomes narrower as it goes downward. At the left and right of the lower end of the guide plate 67, a mounting portion 67a is formed by folding the plate backward, and the mounting portion has a long slot 67b long in the front and rear. On the other hand, a bolt hole 66a is provided on both left and right side surfaces of the guide body 66, and the bolt hole 66a and the long hole 67 of the guide plate 67 are provided.
The guide plate 67 is fixed by passing a fixing bolt 68 through the guide plate 67b and tightening the fixing bolt 68 and the nut 69. The guide plate 67 can be fixed by adjusting the front-rear position by the long hole 67b.

When the guide plate 67 is fixed at the front position, the length of the seed guide area of the seed discharge section 65 in the front-rear direction becomes shorter, and the guide area becomes narrower in plan view. Conversely, when the guide plate 67 is fixed at the rear side position,
The front and rear length of the guide area of the seed No. 5 is increased, and the guide area is widened in plan view. Therefore, it is possible to prevent the seeds from colliding and largely repelling in the seed discharge unit 65 due to differences in the seed particle diameter and specific gravity, the release power of the seed discharge device 37, etc. In order to prevent the seeds of one strain from being supplied over a wide area and to prevent the seeds of a plurality of grains that are equivalent to one strain from being scattered and being supplied to the field, the operator confirms the seeding state as appropriate while checking the guide area. It has been changed so that it can be seeded well. In addition, since the left-right width is comprised so that the guide body 66 and the guide plate 67 may go down, rotation of the guide plate 67 around the fixing bolt 68 is restricted. The guide plate 67 can be stably fixed at an appropriate position only by tightening the nut 69, and the front and rear position of the guide plate 67 can be easily adjusted.

In the above description, the configuration in which the front and rear lengths of the seed guide area of the seed discharge section 65 are changed to change the guide area is described. However, the guide area is changed by changing the left and right length of the guide area. The configuration may be changed. Further, the shape of the guide area in a plan view may be changed, for example, from a state close to a perfect circle to an elliptical shape, so that good spot seeding can be performed.

Although the above embodiment has been described with respect to the structure for performing the good seeding, the fertilizer is intermittently applied to the field in order to exert the fertilizing effect properly and without waste on the position of each seedling in the fertilizer. The present invention can be applied to a method of discharging and supplying a granular substance to a field, such as a case of discharging and applying fertilizer or a case of discharging and supplying a granular drug to a field.

[Brief description of the drawings]

FIG. 1 is a side view of a fertilizer sowing machine.

FIG. 2 is a plan view of the fertilizer sowing machine.

FIG. 3 is a partial cross-sectional side view of the seeding apparatus.

FIG. 4 is a partial cross-sectional side view showing a mounting base plate and a seeding mounting plate.

FIG. 5 is a plan view showing a mounting base plate and a seeding mounting plate.

FIG. 6 is a cross-sectional side view showing a sowing device.

FIG. 7 is a rear view showing the sowing device.

[Explanation of symbols]

2 ... fertilizer sowing machine, 37 ... seed release device, 38 ... sowing groover, 66 ... guide, 67 ... guide plate

Claims (1)

[Claims] 1. A seeding machine that supplies seeds accelerated downward from a discharge device downward and discharged to a guide of a groove generator and discharges the seeds to a field, wherein a guiding area for guiding the seeds can be changed. A seeding machine provided with a vessel guide.