JPH10108511A - Direct seeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direct seeding device capable of performing cultivation, the formation of a direct seeding groove, the application of a basal fertilizer, seeding and the push-in of seeds by a series of operations and improving a finish degree. SOLUTION: This device is provided with a rotary cultivation body 47 for cultivating a paddy field, groove formation bodies 56 positioned and arranged side by side at the rear part of the rotary cultivation body 47 for forming the plural lines of the direct seeding grooves, a fertilizer application conductor 64 for applying the basal fertilizer to the bottom part of the respective direct seeding grooves formed by the respective groove formation bodies 56, a seed conductor 67 positioned at the rear part of the fertilizer application conductor 64 for sowing the seeds to the direct seeding grooves and a finish roller 71 provided with plural seed push-in parts 74 positioned and freely rotatably provided on the rear part of the seed conductor 67 for pushing in the seeds inside the respective direct seeding grooves sown by the seed conductor 67 and a suppression part 75 for suppressing a surface part between the direct seeding grooves. The respective groove formation bodies 56 are provided with a pair of disks 58 to be rotated in the state of bringing front end parts closer and widening rear sides. The finish roller 71 is rotationally driven at a speed for performing slip-rotation to the surface of cultivation soil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct sowing apparatus and, more particularly, to an apparatus for directly sowing seeds such as original manure and seed rice for paddy rice in a paddy field.

[0002]

2. Description of the Related Art Conventionally, as a direct sowing apparatus of this kind, for example, as disclosed in Japanese Patent Application Laid-Open No. 6-276814, a rotary tilling body is rotatably provided, and a drainage is provided at the rear of the rotary tilling body. A ridge formed body having a plurality of drainage groove forming bodies forming grooves and a plurality of seeding groove forming bodies forming a plurality of seeding grooves formed between the drainage groove forming bodies is rotatably provided. A plurality of seed pushers each having a seed conduit having a seeding port for sowing seeds in each seeding groove at the rear part of the seeding groove molded body, and pushing seeds sown in the respective seeding grooves at the rear part of the various child conduits. A configuration in which a body is rotatably provided is known.

[0003]

In the configuration described in the above publication, a ridge of a predetermined width having drain grooves on both sides is formed by a ridge molded body, and a seeding groove is formed in an intermediate portion of the ridge. Although it is preferable to sow seeds in the sowing groove of this ridge, in the case of an agricultural method in which seeds are directly sowed by forming a groove on the surface of the cultivated soil without forming a ridge having a drainage groove as in recent times, In addition, the structure of the ridges is complicated by the amount of the drains forming the drains, and the original fertilizer is sprayed on the whole surface before tilling, or liquid fertilizer is applied to the side of the seeds with a conduit etc. In any case, there is a disadvantage that the original manure must be fertilized as a separate operation, and since the ridge forming and seed pushing are performed separately, the finished condition is not necessarily sufficient depending on the condition of the ground. The problem that sometimes does not become A.

The present invention has been made in view of the above points, and provides a direct sowing apparatus capable of plowing, forming a direct sowing groove, fertilizing an original manure, sowing and pushing a seed by a series of operations and having a good finishing condition. It is intended to provide.

[0005]

According to a first aspect of the present invention, there is provided a direct sowing apparatus comprising: a rotatable rotary tilling body for tilling a paddy field; A plurality of groove forming bodies forming a direct sowing groove of the ridge,
A fertilizer conduit for applying fertilizer to the bottom of each direct sowing groove formed by each of the groove forming bodies; a seed conduit provided at the rear of the fertilizing conduit for sowing seeds in the direct sowing groove; A finishing roller having a plurality of seed pressing portions for rotatably provided at the rear of the seed conduit and for pressing seeds in each of the direct sowing grooves sowed by the seed conduit and a pressure-reducing portion for suppressing the surface portion between the direct sowing grooves; , Is provided.

[0006] When the rotary tilling body is rotated, the paddy field is sequentially tilled by the rotary tilling body, and a plurality of direct sowing grooves are sequentially arranged in parallel on the surface of the tilling soil by the plurality of groove forming bodies. It is formed in a shape. In addition, at the bottom of the plurality of direct sowing grooves, the original manure is sequentially fertilized in each fertilizing conduit, and following the fertilization of the original fertilizer, seeds are sequentially sown in various child conduits in the plurality of direct sowing grooves. .

Further, when the finishing roller is rotated, various children in each direct sowing groove are sequentially pushed in at various child pushing portions of the finishing roller to be embedded in the soil, and at the same time, each pressure reduction of the finishing roller is performed. In the section, the surface between the direct sowing grooves is successively crushed to level the soil, and the foreign materials scattered on the surface between the directly sowing grooves are pushed into and embedded in the soil.

[0008] Therefore, a series of operations enable tillage, formation of a direct sowing groove, fertilization of original manure, sowing and pushing of seeds, and are finished in an orderly manner. Then, by pouring water into the paddy field after sowing and irrigating, both sides of each direct sowing groove collapse sequentially, and various children are buried in the collapsed soil.

According to a second aspect of the present invention, there is provided a direct sowing apparatus according to the first aspect, wherein the groove forming body has a pair of disks which rotate with the front end portion approaching and the rear side being widened. . Then, a direct sowing groove having a substantially U-shaped cross section is sequentially formed on the surface portion of the tilled soil with a predetermined depth and width by the pair of disks.

According to a third aspect of the present invention, there is provided the direct sowing apparatus according to the second aspect, wherein the fertilizing conduit has a fertilizing nozzle at a lower end thereof, and the fertilizing nozzle is disposed on a front side between the pair of disks. The conduit has a seeding nozzle at a lower end, and the seeding nozzle is disposed at a rear part between a pair of disks.

Then, the original fertilizer is sequentially fertilized at the bottom of the direct sowing groove having a substantially U-shaped cross section by the fertilizing nozzle of the fertilizing conduit, and is successively applied to the surface of the straight sowing groove having the substantially U-shaped cross section by the sowing nozzle of the seed conduit. Seeded. At this time, since the fertilizing nozzle of the fertilizing conduit and the seeding nozzle of the seed conduit are disposed at the front and rear portions between the pair of disks, it is possible to prevent the fertilizing nozzle and the seeding nozzle from being clogged.

According to a fourth aspect of the present invention, there is provided the direct sowing apparatus according to the first aspect, wherein the seed pushing portion is provided in a ring shape so as to protrude in a peripheral portion of the finishing roller with a width to enter the direct sowing groove. Then, as the finishing roller is rotated, various seeds sown on the surface of the direct sowing groove are sequentially pushed in by a seed pushing portion annularly protruding from the periphery of the finishing roller.

According to a fifth aspect of the present invention, in the direct sowing apparatus of the first aspect, the finishing roller is rotationally driven at a speed at which the finishing roller slips and rotates with respect to the surface of the tilling soil.

Then, at the same time as the various children are sequentially pushed in by the various child pressing portions of the finishing roller, the surface portions between the respective direct sowing grooves are successively crushed by the respective pressure reducing portions of the finishing roller to level the ground. Miscellaneous materials scattered on the surface between the direct sowing grooves are pushed into the soil.

Therefore, when water is poured into a paddy field after sowing and watered, both sides of each direct sowing groove collapse sequentially, and various children are buried in the collapsed soil, and these various children float by water. There is no germination at the position where the seeds are washed away or moved from the seeding position and shifted from the seeding position.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a machine frame. The machine frame 1 is a left-right hollow pipe-shaped main frame 3 having a transmission device 2 at an intermediate portion.
A vertical transmission case 4 and a bracket 5 disposed and fixed opposite to both ends of the main frame 3; Left and right lower connecting arms 7 having lower pins 6
An upper connecting arm 8 is integrally provided at an upper portion of the transmission device 2 so as to protrude forward and upward and has a connecting hole 8a at a distal end portion. The upper connecting arm 8 is connected to the left and right lower connecting arms 7 via stays (not shown).

The mission device 2 has a transmission case 9 which is integrally and liquid-tightly connected to and supported by an intermediate portion of the main frame 3. The input shaft 11 in the front-rear direction is rotatably supported in a state where the input shaft 11 is positioned by the
A front end portion has a connection shaft portion 12 formed with a number of axial splines on a circumferential side portion protruding forward from the transmission case 9, and the input shaft 11 has a circumferential side portion extending from a rear portion to a rear end. It has a spline shaft portion 13 in which a large number of axial splines are formed.

A first output shaft rotatably inserted into the main frame 3 is provided in both sides of the transmission case 9.
The spline shaft 15 at the inner end of the spline shaft 14 and the spline shaft 17 at the inner end of the second output shaft 16 are opposed to each other and rotatably project.

A cylindrical portion 19 of a bevel gear 18 is spline-fitted integrally with a spline shaft portion 15 of the first output shaft 14, and the cylindrical portion 19 is provided with a bearing member 20 provided on the transmission case 9. Is rotatably supported. The cylindrical portion 22 of the bevel gear 21 is spline-fitted integrally with the spline shaft portion 17 of the second output shaft 16, and the cylindrical portion 22 is rotated by a bearing 23 provided on the transmission case 9. It is freely supported.

Further, bearing bodies 24 are provided in the transmission case 9 on the front and rear sides of the first output shaft 14, respectively, and the input shaft is positioned with the front and rear bearing bodies 24. A first rotation shaft 25 in the front-rear direction for rotating and driving the first output shaft 14 in parallel with 11 is rotatably supported.

The first rotary shaft 25 has a spline shaft portion 26 at the front end, and a bevel gear 27
The cylindrical portion 28 is integrally spline-fitted, and the cylindrical portion 28
Is rotatably supported by a bearing body 24 at the front end. The bevel gear 27 of the first rotating shaft 25 is meshed with the bevel gear 18 of the first output shaft 14. Further, the first rotary shaft 25 has a spline shaft portion 29 having a large number of axial splines formed on a peripheral side portion at a rear end portion.

Further, bearing bodies 30 are provided in the transmission case 9 on the front and rear sides of the second output shaft 16, respectively. The input shafts are positioned by the front and rear bearing bodies 30. A second rotation shaft 31 in the front-rear direction for rotating and driving the second output shaft 16 in parallel with 11 is rotatably supported.

The second rotating shaft 31 has a spline shaft portion 32 at a front end thereof. The spline shaft portion 32 is supported by a spline shaft portion 32 via a collar 33 spline-fitted to the spline shaft portion. The body 30 is rotatably supported by a shaft. The second rotating shaft 31 has a spline shaft portion 34 having a plurality of axial splines formed on a peripheral side portion at a rear end portion, and a substantially intermediate portion located on a front side of the rear bearing body 30. Has a spline shaft portion 35. A bevel gear 36 is spline-fitted integrally with the spline shaft 35 at the substantially middle portion, and the bevel gear 36 is connected to the second output shaft 16.
Of the bevel gear 21.

Next, in the transmission case 9, there is provided a shift transmission means 37 capable of shifting and transmitting the rotation of the input shaft 11 to the first rotation shaft 25 and the second rotation shaft 31, respectively. Is provided. The speed change transmission means 37 includes a first speed change means 38 capable of changing the speed of transmission of the rotation of the input shaft 11 to the first rotation shaft 25 for transmission, and the input shaft 11.
Speed-change adjustable second transmission means 39 for transmitting the rotation of the second rotation shaft 31 to the second rotation shaft 31 at a variable speed.

The first transmission means 38 has a pair of spur gears 40 and 41 meshing with each other and having different rotational speeds, and one of the large diameter spur gears 40 is a spline shaft of the input shaft 11. The other small-diameter spur gear 41 is detachably spline-fitted to the spline shaft portion 29 of the first rotary shaft 25. The large-diameter spur gear 40 is detachably spline-fitted to the spline shaft portion 29 of the first rotating shaft 25, and the small-diameter spur gear 41 is detachably mounted to the spline shaft portion 13 of the input shaft 11. Is spline-fitted.

That is, the pair of spur gears 40 and 41 meshing with each other and having different rotation speeds are detachably attached to and removable from the spline shaft portion 13 of the input shaft 11 and the spline shaft portion 29 of the first rotation shaft 25. Is spline-fitted. The rotation of the input shaft 11 is controlled by the first rotation shaft 25.
The speed is adjusted and transmitted.

The second speed change means 39 has a pair of spur gears 42 and 43 which are meshed with each other and have different rotational speeds.
One of the small-diameter spur gears 42 is detachably spline-fitted to the spline shaft portion 13 of the input shaft 11, and the other large-diameter spur gear 43 is a spline shaft portion 34 of the second rotary shaft 31.
And is spline-fitted to be detachable. The small diameter spur gear 42 is connected to the spline shaft portion 34 of the second rotary shaft 31.
The large diameter spur gear 43 is detachably fitted to the spline
Is adapted to be detachably spline-fitted to the spline shaft portion 13 of the input shaft 11.

That is, the pair of spur gears 42 and 43 meshing with each other and having different rotation speeds are detachably attached to the spline shaft portion 13 of the input shaft 11 and the spline shaft portion 34 of the second rotation shaft 31. It is designed to be freely spline-fitted. Then, the rotation of the input shaft 11 is transmitted to the second rotation shaft.
The transmission is adjusted to 31 and transmitted.

Next, the spline shaft portion 1 of the input shaft 11
3, the spline shaft portion 29 of the first rotating shaft 25 and the spline shaft portion 34 of the second rotating shaft 31 have respective spur gears.
After spline fitting of the splines 40, 41, 42, and 43, cylindrical collars 44 for positioning the spur gears 40, 41, 42, and 43 are removably fitted.

A cover body 45 that opens and closes when adjusting the speed of the shift transmission means 37 is attached to the rear side of the transmission case 9 so as to be openable and closable. When the cover body 45 is closed, the cover body 45 is detachably fastened with a plurality of bolts 46, but when the cover body 45 is closed and fastened with the plurality of bolts 46, The cover body 45 and the transmission case 9 are sealed in a liquid-tight manner so that the transmission case 9 is sealed as a whole so that the lubricating oil does not leak.

Next, the transmission case 4 and the bracket 5
A rotary tilling body 47 is rotatably mounted between the lower end portions of the rotary tilling body. The rotary tilling body 47 is provided with a tilling shaft 48 rotatably mounted between lower ends of the transmission case 4 and the bracket 5, and radially protruding from the tilling shaft 48 at a predetermined interval in the axial direction. And a large number of tillage claws 49. Also, one end of the tilling shaft 48 projects into the lower end of the transmission case 4, and the outer end of the first output shaft 14 projects rotatably into the upper end of the transmission case 4. One end of the tilling shaft 48 is interlocked to the outer end of the output shaft 14 via an interlocking medium 50 provided in the transmission case 4.

A cover 51 covering the upper part of the rotary cultivator 47 is integrally fixed between the transmission case 4 and the bracket 5, and a rear end of the cover 51 is provided with the rotary cultivator. A ground plate 52 is supported at the back of 47 so as to be vertically rotatable.

Next, a support frame 53 is integrally formed on the main frame 3 so as to project rearward. The support frame 53 has a left-right support rod 54 at the lower rear side. A plurality of support members 55 are attached at predetermined intervals in the length direction, and each support member 55 has a groove forming body that forms a direct sowing groove on the surface portion of the tilled soil via a suspending body 55a. 56 are supported respectively. Each of the groove forming bodies 56 forms a direct sowing groove over a plurality of lines on the surface of the tilling soil.

Each of the groove forming bodies 56 has a substantially horizontal mountain-shaped rotation center axis 57 suspended from the lower end of a hanging body 55a of each support 55, and each of the rotation center axes 57. And a pair of disks 58 which are rotatably mounted on the shaft and which rotate with their front ends approaching each other and their rear sides being expanded and inclined. That is, each of the groove forming bodies 56 is composed of a disk opener 56a having the pair of disks 58. When the pair of disks 58 of each support 55 is rotated, the pair of disks 58 at each position forms a direct sowing groove having a substantially U-shaped cross section over a plurality of strips. .

The support frame 53 has a rectangular support frame 59 which is long in the left-right direction on the upper rear side, and a plurality of hoppers 60 are supported on the support frame 59 in parallel. Each of the hoppers 60 has a fertilizer hopper 61 containing an original fertilizer and a seed hopper 62 containing seeds such as seeds for paddy rice.
It is united with 62.

An upper end of a fertilizer conduit 64 is connected to the bottom of each fertilizer hopper 61 via a feeding mechanism 63 for feeding out fertilizer in the fertilizer hopper 61, and is connected to the lower end of each fertilizer conduit 64. Are a pair of disks 58 at each of the above positions.
Fertilizing nozzles which are respectively disposed and fixed at the front side between the fertilizer application pipes, and which are opened rearward at the lower end of each of the fertilizing conduits 64
Numerals 65 are provided at the front lower end between the pair of disks 58, respectively.

An upper end of a seed conduit 67 is connected to the bottom of the various child hoppers 62 via a feeding mechanism 66 for feeding out seeds in the seed hopper 62. Seeding nozzles which are respectively disposed and fixed at rear portions between the pair of disks 58 at the respective positions, and which are opened rearward at the lower end portions of the various conduits 67.
68 are provided at the rear part between the pair of disks 58 and above the fertilizing nozzle 65, respectively.

Next, a bracket 69 in the front-rear direction is integrally fixed to one end of the main frame 3, and the other end of the main frame 3 is parallel to the front-rear direction facing the bracket 69. The transmission case 70 is integrally fixed, and between the rear ends of the bracket 69 and the transmission case 70 on both sides thereof is located at the rear of the groove forming body 56 and has a left-right finishing roller 71
Is rotatably mounted on a shaft.

The finishing roller 71 has a roller body 72, and is integrally fixed to the roller body 72.
A roller support shaft 73 rotatably mounted between the rear ends of the transmission case 69 and the transmission case 70, and a ring-shaped protrusion protruding from the outer peripheral surface of the roller body 72 at a position opposite to the groove forming bodies 56, respectively. A large number of seed pushers that push the seeds in each direct sowing groove
74 and the roller body positioned between the various child pushing portions 74.
And 72, which are formed on the outer peripheral surface of the groove 72 and reduce the surface portion between the direct sowing grooves.

The various child pushing portions 74 are formed of an annular ring which is fitted and mounted on the outer peripheral surface of the roller body 72 so as to be adjustable, or an annular belt wound around the outer peripheral surface of the roller body 72 so as to be adjustable in position. ing. Each of the child pushing portions 74 formed of an annular ring or an annular belt is formed to have a width that enters each direct sowing groove.

The roller support shaft 73 of the finishing roller 71
One end of the second output shaft 16 protrudes into the rear end of the transmission case 70, and the outer end of the second output shaft 16 projects rotatably into the front end of the transmission case 70. One end of the roller support shaft 73 is operatively connected to the outer end of the roller support 73 via an intermediary medium 76.

Next, the operation of the above embodiment will be described.

The lower pin 6 and the upper connecting arm 8 of the lower connecting arm 7 on the right and left sides of the direct seeding apparatus A are connected to the three-point connecting portion of the tractor.
The connecting shafts (not shown) inserted into the connecting holes 8a are connected to each other, and the connecting shaft 12 of the input shaft 11 is spline-fitted to the PTO shaft of the tractor via a power transmission shaft.

Then, the direct seeding apparatus A is towed by the tractor, and the input shaft 11 is rotated by the PTO shaft of the tractor via the power transmission shaft. The speed is increased by the speed change means 38 and transmitted to the first rotating shaft 25, the first rotating shaft 25 is rotated at a high speed, and the bevel gear of the first rotating shaft 25 is rotated.
At 27, the first output shaft 14 is driven to rotate via the bevel gear 18 meshed with the bevel gear 27.

When the input shaft 11 is rotated,
The rotation of the input shaft 11 is reduced by the second transmission means 39 and transmitted to the second rotating shaft 31, and the second rotating shaft 31
The second output shaft 16 is rotated by the bevel gear 36 of the second rotating shaft 31 via the bevel gear 21 meshed with the bevel gear 36 while the second output shaft 16 is rotated at a speed lower than that of the rotating shaft 25.

When the first output shaft 14 is driven to rotate, the rotary tilling body 47 is rotated by the first output shaft 14 via the interlocking medium 50 in the transmission case 4, and the rotary tilling is performed. The soil of the paddy field is progressively tilled by a large number of tilling claws 49 of the body 47, and these tilling soils are
It is leveled in sequence at 52.

At this time, since the first rotating shaft 25 is rotated at a speed higher than the rotation of the input shaft 11, the rotation from the first rotating shaft 25 and the output from the first output shaft 14 drives the rotation. The rotating till 47 is rotated at a high speed.
Therefore, it is preferable in a case where the soil in the field is wet (wet field), the soil hardly adheres to each tilling claw 49, and the tilling efficiency is improved.

Further, the rotary tilling body 47 is rotated and driven to advance, and a number of groove forming bodies 56, ie, a pair of disks 58 of the disk opener 56a are respectively rotated, and the pair of disks 58 of each disk opener 56a are rotated. On the ground leveled by the ground leveling plate 52, straight seeding grooves a having a substantially U-shaped cross section are sequentially formed in parallel with a large number of strips at a predetermined width and depth, and both side edges of each straight seeding groove a are formed. In the portion, an embankment b which is pushed up by a pair of disks 58 and formed is formed.

Further, while the rotary tilling body 47 is driven to rotate, the feeding mechanism 63 of each fertilizer hopper 61 and the feeding mechanism 66 of each child hopper 62 are operated, and the feeding mechanisms 63 of each fertilizer hopper 61 are respectively operated. The original manure c in the fertilizer hopper 61 is fed out and led out to each fertilizing conduit 64, and the seed d in each seed hopper 62 is fed out by the feeding mechanism 66 of the various child hoppers 62, and is fed to the various child conduits 67. Derived.

The original fertilizer c is sequentially fertilized from the fertilizing nozzle 65 of each fertilizing conduit 64 to the bottom of each direct sowing groove a. The embankment b on both side edges of the direct sowing groove a is naturally collapsed, and the original manure c is buried in the collapsed embankment b.
In addition, following the fertilization of the original manure c, the seeding nozzle
Seed d is placed on the surface of embankment d that has collapsed in each direct sowing groove a from 68
Are sequentially sown. At this time, since each direct sowing groove a is formed in a substantially U-shaped cross section, the original manure c is fertilized at the lowest bottom of the direct sowing groove a, and the seed d is seeded on the surface of the embankment b which has collapsed in the direct sowing groove a. Therefore, the seeds d are sown so as not to contact the original manure c.

The fertilizing nozzle 65 of each fertilizing conduit 64 is disposed at the lower end on the front side between each pair of disks 58 and is opened rearward, so that each fertilizing nozzle 65 can be fertilized when the original fertilizer c is fertilized. Mud is prevented from entering inside. Also, since the seeding nozzle 68 of the various conduits 67 is located at the rear of the fertilization nozzle 65 and is disposed at the rear of the pair of disks 58 and is opened rearward,
Mud soil is prevented from entering into each sowing nozzle 68 at the time of sowing the seed d.

Further, when the second output shaft 16 is rotationally driven, the finishing roller 71 is rotated by the second output shaft 16 via the interlocking medium 76 in the transmission case 70 at a rotational speed higher than the traveling speed. While being rotated, the finishing roller 71 is slip-rotated with respect to the ground level between the direct sowing grooves a. Then, the direct seeding groove a
At the same time as the above-mentioned various children d are sequentially pushed into the soil, the surface portions between the direct sowing grooves a of the finishing rollers 71 are successively pressed down by the respective pressure suppressing portions 75 to be leveled.
Miscellaneous materials scattered on the surface in between are pushed into the soil.

At this time, since each direct seeding groove a is formed relatively soft because of the paddy field, various children d on each direct seeding groove a are easily pushed in by various child pushing parts 74, and various child seeding grooves a are formed. d is pushed into the soil without damaging it.
Is pushed in a state where it does not come into contact with the original manure c applied to the bottom of each direct sowing groove a and does not come up even if water is poured into a paddy field and watered. Further, when the finishing roller 71 is slip-rotated, each of the pressure reducing portions of the finishing roller 71 is rotated.
At 75, miscellaneous materials scattered on the surface between the direct sowing grooves a are reliably pushed into the soil.

Therefore, when water is poured into a paddy field after sowing and watering is performed, both sides of each direct sowing groove a are sequentially collapsed, and the various children d are covered with the collapsed soil e. This prevents the seeds d from floating and being washed away and moving from the seeding position to germinate at a biased position, without impairing the germination of the seeds d, and preventing the foreign substances from floating.

Therefore, by a series of operations, tillage, formation of the direct sowing groove a, fertilization of the original manure c, sowing and pushing of the seed d can be performed and finished in an orderly manner. Then, by pouring water into the paddy field after sowing and irrigating, the both sides of each direct sowing groove a sequentially collapse, and the various children d are buried in the collapsed soil e, and the various children d are protected from bird damage. You.

Next, the second speed change means 39 of the speed change transmission means 37 is changed, for example, to a small diameter spur gear according to the work situation in the field.
42 is detached from the spline shaft portion 13 of the input shaft 11 and spline-fitted to the spline shaft portion 34 of the second rotary shaft 31,
The large-diameter spur gear 43 of the transmission means 39 is removed from the spline shaft portion 34 of the second rotating shaft 31 to remove the spline shaft portion of the input shaft 11.
13 is spline fitted.

When the input shaft 11 is rotated, the speed of the rotation of the input shaft 11 is increased by the second speed change means 39 and transmitted to the second rotating shaft 31. Is set to rotate at a high speed. That is, the second rotating shaft 31 is set to be rotated at a higher speed than in the above case.

Further, the second output shaft 16 is connected to the second rotating shaft 31.
Is driven to rotate the finishing roller 71 at a rotation speed higher than the traveling speed by the second output shaft 16 via the interlocking medium 76 in the transmission case 70,
The finishing roller 71 is further slip-rotated with respect to the ground level between the direct sowing grooves a, and the foreign matter scattered on the surface between the direct sowing grooves a in each of the pressure reducing portions 75 of the finishing roller 71 is in the soil. Pressed firmly.

Next, the large-diameter spur gear 40 of the first speed change means 38 of the speed change transmission means 37 is connected to the input shaft 11 in accordance with the work situation in the field.
From the spline shaft portion 13 of the first rotary shaft 25 and spline-fitted to the spline shaft portion 29 of the first rotating shaft 25, and the first transmission means 38
Of the spline shaft portion 29 of the first rotating shaft 25
And is spline-fitted to the spline shaft portion 13 of the input shaft 11.

When the input shaft 11 is rotated, the rotation of the input shaft 11 is reduced by the first speed change means 38 and transmitted to the first rotary shaft 25. It is set to rotate at a slow speed. That is, the first rotation shaft 25 is set to rotate at a lower speed than in the above case.

The first rotating shaft 25 is rotated at a lower speed than the rotation of the input shaft 11 so that the first rotating shaft 25 is rotated.
The rotary cultivator 47, which is driven to rotate by the rotation shaft 25 and the output from the first output shaft 14, is rotated at a lower speed than in the above case. Therefore, it is preferable when the soil in the field is in a dry state (dry field), the soil hardly adheres to each of the tilling claws 49, and the soil is crushed at a relatively coarse tilling pitch, and the tilling efficiency is improved.

Further, if necessary, in the first transmission means 38 and the second transmission means 39 of the transmission means 37, a pair of large-diameter spur gears 40 and small-diameter spur gears 41 mesh with each other. And a pair of the large-diameter spur gear 43 and the small-diameter spur gear 42 meshing with each other are exchanged with each other so that the first
The transmission mechanism 37 is spline-fitted to the rotary shaft 25 and the second rotary shaft 31 to adjust the speed of each.
The speed of the rotation of the input shaft 11 is further shifted to a predetermined speed and transmitted to the first rotating shaft 25 and the second rotating shaft 31, respectively, and the first output shaft 14 and the second output shaft 16 are further shifted. Each is driven to rotate at the adjusted predetermined speed.

Then, the first output shaft 14 and the second output shaft
With the output from 16, the rotary tilling body 47 and the finishing roller 71 can be driven to rotate at an appropriate rotation speed so as to perform an operation according to the soil properties of the field.

[0065]

According to the first aspect of the present invention, the surface portion between the direct sowing grooves can be leveled simultaneously with the plowing, the formation of the direct sowing groove, the application of the original manure, the sowing and the pushing of the seeds by a series of operations. The seeding operation can be sufficiently labor-saving. At this time, the seeds can be stabilized in the direct sowing groove by pushing the seeds in the direct sowing groove, and the movement and loss of the seeds can be reliably prevented. By pressing down the surface between them and leveling, miscellaneous materials can be pushed securely into the soil, foreign materials can be prevented from floating, and seed pushing and leveling of seeds are done by the seed pushing part of the finishing roller and the repressing part And simultaneously performing the steps (a), (b), and (c), thereby providing a direct sowing apparatus with sufficient work efficiency and a satisfactory finish.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the groove forming member has a pair of disks which rotate with the front end portion approaching and the rear side being expanded. With this pair of disks, a direct sowing groove having a substantially U-shaped cross section can be formed, and an original manure can be applied to the bottom of the direct sowing groove, and seeds can be sown above the original manure in a state separated from the original manure. it can.

According to the third aspect of the present invention, in addition to the effect of the second aspect, the fertilizing conduit has a fertilizing nozzle at a lower end thereof, and the fertilizing nozzle is disposed on the front side between the pair of disks. The seed conduit has a sowing nozzle at the lower end, and the sowing nozzle is disposed at the rear part between the pair of disks, so that the fertilizing nozzle and the sowing nozzle fertilize and sow in a state surrounded by the pair of disks. It is possible to prevent mud from clogging the fertilizing nozzle and the seeding nozzle.

According to the fourth aspect of the present invention, in addition to the effect of the first aspect, the seed pushing portion is annularly protruded from the peripheral edge of the finishing roller with a width that enters the direct sowing groove. The seeds in the direct sowing groove can be continuously and reliably pushed in by the seed pushing portion projecting in a ring shape.

According to the fifth aspect of the invention, in addition to the effect of the first aspect, the finishing roller is rotationally driven at a speed of slip rotation with respect to the surface portion of the cultivated soil. The surface part between the direct sowing grooves can be crushed and the ground leveled in order, and the foreign materials on the surface part between the direct sowing grooves can be reliably pushed into the soil to improve the finishing condition. can do.

[Brief description of the drawings]

FIG. 1 is a side view of a direct sowing apparatus showing an embodiment of the present invention.

FIG. 2 is a plan view partially showing the same as above.

FIG. 3 is an enlarged sectional view of the mission device.

FIGS. 4 (A), (B), (C), (D), and (E) are explanatory views showing working steps.

[Explanation of symbols]

 47 Rotary tillage body 56 Groove forming body 58 Disk 64 Fertilizer application pipe 65 Fertilizer application nozzle 67 Seed pipe 68 Seeding nozzle 71 Finishing roller 74 Seed pushing part 75 Suppressing part a Direct sowing groove c Original fertilizer d Seed

Claims (5)

[Claims] 1. A rotatable rotary tilling body for cultivating a paddy field, and a plurality of groove forming bodies which are located in parallel behind the rotary tilling body and form a plurality of direct sowing grooves on a surface portion of the cultivated soil. A fertilizing conduit for fertilizing the original fertilizer at the bottom of each direct sowing groove formed by each of the groove forming bodies, a seed conduit provided at the rear of the fertilizing conduit and sowing seeds in the direct sowing groove, A finishing roller having a plurality of seed pushing portions that are rotatably provided at the rear of the conduit and push the seeds in the respective direct sowing grooves sowed by the seed conduit and a pressure-reducing portion that suppresses a surface portion between the direct sowing grooves. And a direct sowing apparatus characterized by comprising: 2. The direct seeding apparatus according to claim 1, wherein the groove forming body has a pair of disks that rotate with the front end approaching and the rear side expanded. 3. The fertilizing conduit has a fertilizing nozzle at a lower end, the fertilizing nozzle is disposed in front of a pair of disks, and the seed conduit has a sowing nozzle at a lower end. 3. The direct sowing device according to claim 2, wherein the sowing device is disposed at a rear portion between the pair of disks. 4. The direct sowing apparatus according to claim 1, wherein the seed pushing section is annularly protruded from a peripheral portion of the finishing roller with a width that enters the direct sowing groove. 5. The direct sowing apparatus according to claim 1, wherein the finishing roller is rotationally driven at a speed at which the finishing roller slips and rotates with respect to a surface portion of the tilling soil.