JP7385889B2 - Seeding device - Google Patents

Description

The present invention relates to a technology for a seeding device that dispenses seeds from a dispensing device and sows them in a field.

Conventionally, it has been known to perform direct cultivation (flooded direct sowing) to increase the cultivation area of rice. In the direct-seeding cultivation, granular rice seeds are sown directly into a water-filled paddy field (field). Some of the seeds used in the direct sowing cultivation have their surfaces coated with calcium peroxide, iron, etc., while others are not coated with such a coating.
As a device for directly sowing the granular seeds in a field, various techniques are known regarding a seeding device that includes a hopper in which seeds are stored and a feeding device that feeds out seeds in predetermined amounts (see Patent Document 1).
The seeding device is configured as a rice transplanter dedicated to flooded direct sowing, and is equipped with the seeding device at the rear of a running section.It is also installed at the rear of a working machine such as a harrow attached to the rear of a tractor, and is attached to the running section or the rice transplanter. The seeding operation is performed while the tractor is running.

Japanese Patent Application Publication No. 2014-135923

However, when performing seeding work using a seeding device, if you do not own a rice transplanter dedicated to direct sowing in water, it is necessary to purchase a new rice transplanter. Furthermore, when sowing is performed using a tractor, sowing accuracy may be reduced due to muddy currents coming from the rear of a working machine such as a harrow.

The present invention has been made in view of the above-mentioned circumstances, and eliminates the need to purchase a new rice transplanter dedicated to direct sowing in water when performing seeding work, and also suppresses a decrease in sowing accuracy. The challenge is to provide what is possible.

The problem to be solved by the present invention is as described above, and next, means for solving this problem will be explained.

That is, in claim 1, there is provided a seeding device that feeds out seeds from a feeding device and sows them in a field, which is mounted on the rear of a tractor without using any other work equipment, and when the tractor performs a seeding operation while traveling. further comprising a guide portion that adjusts the flow direction of field mud around the seeding device behind the tractor and guides the mud so that it does not spread and flow outside the seeding device; the guide portion comprises an outer guide member and an inner guide member, the outer guide member is a plate-like member whose longitudinal direction is in the front-rear direction , and the inner guide member is formed in a substantially dogleg shape in a plan view. The outer guide member is a plate-like member that is provided on the inner surface of the outer guide member so that the corner portion of the midway portion formed by the substantially doglegged shape protrudes inward.

According to a second aspect of the present invention, the vehicle includes a ground leveling section that is arranged behind the rear wheels of the tractor and leveled the wheel marks formed when the tractor runs.

According to a third aspect of the present invention, a mudguard is provided behind the rear wheels of the tractor to prevent mud from being scattered rearward when the tractor runs.

According to a fourth aspect of the present invention, the rice straw holding part is provided for pushing rice straw floating in the mud of the field into the soil .

The present invention has the following effects.
That is, according to the present invention, it is not necessary to purchase a new rice transplanter exclusively for submerged direct sowing when performing seeding work, and it is possible to suppress a decrease in sowing accuracy.

FIG. 1 is a side view showing a state in which a seeding device according to an embodiment of the present invention is attached to a tractor. FIG. 3 is a rear view showing a state in which the seeding device is attached to the tractor. FIG. 3 is a plan view showing a state in which the seeding device is attached to a tractor. Similarly, a front view of the seeding device. Similarly, a rear view of the seeding device. Similarly, a plan view of the seeding device. Similarly, a bottom view of the seeding device. Similarly, the left side view of the seeding device. Similarly, the right side view of the seeding device. Similarly, the left side view of the seeding device. Similarly, an enlarged front view of the seeding device. Similarly, an enlarged perspective view of the seeding device.

Next, a seeding device 10 according to an embodiment of the present invention will be described using FIGS. 1 to 12.

The seeding device 10 performs direct sowing under water, and sows granular rice seeds directly into a paddy field (field) that is filled with water. Some of the seeds have their surfaces coated with calcium peroxide, iron, etc., while others are not coated with such a coating.
As shown in FIGS. 1 to 3, the seeding device 10 is directly attached to the work equipment mounting device 9 at the rear of the tractor 1 without using any other work equipment (work equipment such as a harrow or cultivator other than the seeding device 10). be done.
As shown in FIGS. 1 to 12, the seeding device 10 includes a feeding device 11, a hopper 12, a transmission shaft 13, a gear case 14, a mounting section 15, a guide section 20, a float 30, and a groove cutter. It includes a section 40, a ground leveling section 50, a mudguard section 60, and a straw holding section 70.

The feeding device 11 feeds out a predetermined amount of granular seeds (like spot sowing) from a lower discharge port. A plurality of feeding devices 11 (for example, 12 devices) are arranged in the seeding frame 80 in the left-right direction for the number of rows. The number of feeding devices 11 can be changed as appropriate depending on required specifications, conditions, and the like.
A hopper 12 in which seeds are stored is provided above the feeding device 11.
A transmission shaft 13 extending left and right from a gear case 14 is inserted into the feeding device 11 . The gear case 14 has a motor inside and is arranged at the left and right center of the seeding frame 80. The transmission shaft 13 is rotationally driven by a motor within the gear case 14 . When the transmission shaft 13 is rotationally driven in the feeding device 11, a perforated plate in the feeding device 11 is driven to rotate, and seeds in the hopper 12 are fed out in predetermined amounts.
In addition to the configuration in which the feeding device 11 feeds out seeds using the motor in the gear case 14 as a power source, there is also a configuration in which power from the engine of the tractor 1 is fed into the gear case 14 via a PTO shaft, an input shaft, etc. A configuration in which the transmission shaft 13 is rotationally driven by the transmission, and the power generated when the tractor 1 runs and the rear wheels 6 or front wheels 7 etc. rotate is transmitted to the gear case 14 via the input shaft etc. It is also possible to adopt a configuration in which the shaft 13 is rotationally driven.

As shown in FIGS. 1 to 3, the tractor 1 is a tractor 1 for agricultural work, and has an engine disposed in a bonnet 3 at the front of a body frame 2, a dashboard 4 provided at the rear of the bonnet 3, and a dashboard. A driver's seat 5 is provided behind the board 4 in which an operator sits. A transmission case housing a transmission is disposed below the driver's seat 5, and rear wheels 6 are supported on both rear sides of the transmission case via rear axle cases. A front wheel 7 is supported in front of the rear wheel 6 via a front axle case. An operating section 8 is provided on the dashboard 4 or around the driver's seat 5, and includes a steering handle, a work equipment elevation switch, a forward/reverse switching lever, a speed change lever, an accelerator lever, or the like.
A work implement mounting device 9 is provided at the rear of the tractor 1 body.
The work equipment mounting device 9 is a quick hitch that includes a top link 9a and a lower link 9b, and is configured to be able to mount the work equipment (seeding device 10), and can be attached by operating the operating unit 8 (work equipment elevation switch). By operating the hydraulic cylinder, the attached working machine can be raised and lowered.

As shown in FIGS. 1 to 12, the guide portions 20 are provided at the left end and right end of the seeding frame 80, respectively, and constitute the left side or the right side of the seeding device 10. When the seeding device 10 performs a seeding operation while the tractor 1 is traveling, the guide section 20 indicates the direction of flow of mud (mud or muddy water) in the field around the seeding device 10 behind the tractor 1 (the direction of flow of muddy current). Adjustments are made to guide the mud so that it does not spread and flow outside of the seeding device 10.
The guide section 20 includes an outer guide member 21 and an inner guide member 22.

The outer guide member 21 of the guide part 20 guides the mud so that it does not spread and flow outside the seeding device 10.
The outer guide member 21 is a plate-like member whose longitudinal direction is the front-rear direction, and its upper end portion is bent inward to form a substantially L-shape when viewed from the front. The outer guide member 21 is fixed to the left end or right end of the seeding frame 80 via a mounting plate, and is arranged outside the feeding device 11 (the feeding device 11 disposed on the leftmost or rightmost side). The front end portion of the outer guide member 21 is located forward of the ground leveling frame 88 and extends to the side of the rear wheel 6 of the tractor 1. The rear end portion of the outer guide member 21 is located further back than the seeding frame 80. The front lower edge of the outer guide member 21 is formed into an arc shape that gently curves upward as it goes forward.

The inner guide member 22 of the guide part 20 decelerates the flow of mud inside the outer guide member 21 while directing the flow direction of the mud inward.
The inner guide member 22 is a member obtained by bending a single plate member at 90 degrees (approximately in a dogleg shape) when viewed from above. It is arranged on the inner surface of the guide member 21 (the right surface of the left outer guide member 21 or the left surface of the right outer guide member 21).
The inner guide member 22 is located on the side of the soil leveling frame 88, located behind the rear wheels 6 of the tractor 1, and located ahead of the seeding frame 80.

As described above, the guide unit 20 adjusts the flow direction of the mud in the field around the seeding device 10 at the rear of the tractor 1, and guides the mud so that it does not spread and flow outside the seeding device 10. , it is possible to stabilize the field and perform seeding work reliably.
In addition, in the guide section 20, the outer guide member 21 and the inner guide member 22 are constructed by bending plate-shaped members, so that the mud is prevented from spreading and flowing outside the seeding device 10. What is to be guided can be realized with a simple configuration.

A cart 25 is removably provided in the guide section 20. When transporting the seeding device 10 or moving the tractor 1, the trolley 25 is attached to the guide section 20. Further, when performing seeding work, the trolley 25 is removed from the guide section 20 (see FIG. 10).
The trolleys 25 are arranged on the outside of each of the guide sections 20 on both sides.
The trolley 25 includes a platform 26, wheels 27, and a mounting body 28. The platform 26 of the truck 25 is a rod-shaped member whose longitudinal direction is the front-rear direction. Wheels 27 of the truck 25 are provided at the front and rear portions of the lower surface of the platform 26, respectively. The mounting body 28 of the trolley 25 is a rod-shaped member that is supported by the support body 24 of the guide section 20 when the trolley 25 is attached to the guide section 20, and projects upward from the approximately central portion of the front and back of the platform section 26. It is set up like this.
A support 23 is provided on the outer surface of the outer guide member 21 of the guide portion 20 . The support body 23 is a stay having a substantially U-shape in plan view, and supports the mounting body 28 of the truck 25 when the truck 25 is attached to the guide section 20 .
With the mounting body 28 of the trolley 25 placed inside the support body 23 of the guide section 20, by replacing and inserting the U-shaped pin into the support body 23 of the guide section 20, the trolley 25 can be guided. It is attached to the section 20.

A mounting member 81 is provided on the seeding frame 80.
The attachment member 81 is arranged in front of the seeding frame 80. The mounting member 81 is a member whose longitudinal direction is the left-right direction, which is obtained by bending a plate-shaped member so as to have a rear surface portion and an upper surface portion (approximately L-shaped when viewed from the side). A projecting portion is provided so as to project downward, and supports 51 are provided on the left and right rear surfaces of the projecting portion, respectively, so as to project rearward. The projecting portion of the attachment member 81 is fixed to the float 30, and the rear end portion of the support portion is fixed to the seeding frame 80.

The float 30 is provided on the seeding frame 80 via a mounting member 81, and supports the seeding device 10 so that it does not sink into mud.
The float 30 is a member whose longitudinal direction is the left-right direction, which is formed by bending a single plate-like member so that it curves gently upward as it goes forward (in a cross-shaped shape when viewed from the side), and whose longitudinal direction is the left-right direction. It is constructed by providing a plurality of projecting portions so as to protrude upward. The float 30 is attached to the mounting member 81 by fixing the projecting portion of the float 30 to the projecting portion of the mounting member 81 .
The rear end of the float 30 is located below the seeding frame 80 (lower and rearward of the feeding device 11), and the front end of the float 30 is located in front of the seeding frame 80 and the first support frame 82. The left end of the float 30 is located on the outer side of the feeding device 11 located on the leftmost side, and the right end portion of the float 30 is located on the outside of the feeding device 11 located on the rightmost side. The left end of the float 30 is in contact with the inner surface of the outer guide member 21 on the left side of the guide part 20, and the right end part of the float 30 is in contact with the inner surface of the outer guide member 21 on the right side of the guide part 20. Mud is prevented from entering into the float 30 from between the float 30 and the outer guide member 21 of the guide section 20. The upper end of the float 30 is configured to be flush with the upper end of the outer guide member 21 of the guide section 20, and the lower end of the float 30 is configured to be flush with the lower end of the outer guide member 21 of the guide section 20.
In this way, the left end of the float 30 is located on the outer side of the feeding device 11 located on the leftmost side, and the right end portion of the float 30 is located on the outside of the feeding device 11 located on the rightmost side. Since the float 30 is relatively large, it is possible to level the field with the lower surface of the float 30.

A groove cutting frame 89 is provided on the projecting portion of the float 30 via a bracket or the like.
The grooving frame 89 is arranged below the seeding frame 80. The left end of the grooving frame 89 contacts the inner surface of the outer guide member 21 on the left side of the guide part 20, and the right end part of the grooving frame 89 contacts the inner surface of the outer guide member 21 on the right side of the guide part 20. comes into contact with.
A plurality of grooved portions 40 are provided on the grooved frame 89 via brackets or the like.

The groove cutting part 40 is formed in the field by the tractor 1 traveling so that mud can easily escape and enter the place where the seeds are sown.
The groove section 40 is composed of a relatively large large groove section 41 and a small groove section 42.
The large grooves 41 and the small grooves 42 are arranged alternately in the left-right direction so as to protrude from the lower surface of the float 30. The large groove section 41 is arranged below the feeding device 11 when viewed from the rear, and the small groove section 42 is arranged below the feeding device 11 when viewed from the rear. The small groove section 42 is located in front of the feeding device 11, and the large groove section 41 is located behind the small groove section 42.
The number of large grooves 41 and small grooves 42, their arrangement locations, etc. can be changed as appropriate according to required specifications, conditions, and the like.

A first support frame 82 is provided on the seeding frame 80 via a bracket or the like.
The first support frame 82 is arranged in the left and right center of the seeding device 10, in front of the seeding frame 80 and the gear case 14, and above the float 30.
An extension plate 83 is provided at each of the left end and right end of the first support frame 82 so as to extend forward.
A front end portion of the extension plate 83 is located forward of the float 30. Hitch plates 84 are provided at the front ends of the left and right extending plates 83, respectively, so as to be inclined toward the center as they go upward.
A support plate 85 is provided extending from the upper end of the gear case 14 to the upper end of the hitch plate 84.
The top link 9a of the work implement mounting device 9 of the tractor 1 is connected to the upper end of the hitch plate 84, and the lower link 9b of the work implement mounting device 9 of the tractor 1 is connected to the front end of the extension plate 83. The seeding device 10 is directly mounted on the work implement mounting device 9 of the tractor 1 (at the rear of the tractor 1). The mounting portion 15 is constituted by the hitch plate 84 and the extension plate 83.

As described above, the seeding device 10 is equipped with the attachment part 15 and is directly attached to the rear of the tractor 1 without using a working machine. Therefore, when performing seeding work, a new rice transplanter specifically designed for direct sowing in water is purchased. In addition, the influence of muddy current from the rear of a working machine such as a harrow is eliminated, and it is possible to suppress a decrease in sowing accuracy.

A second support frame 87 is provided across the extension plates 83, and an extension frame 87 is provided at each of the left and right ends of the second support frame 87 so as to extend forward and downward. A ground leveling frame 88 is provided at the front end of the exit frame 87.
The soil leveling frame 88 has left and right end portions located on the left and right outer sides of the hitch plate 84, and is configured to be shorter than the seeding frame 80. The earth leveling frame 88 is arranged in front of the float 30. A ground leveling section 50 is provided on the ground leveling frame 88.

The ground leveling unit 50 levels the farmland where wheel marks left by the tractor 1 are left. The ground leveling unit 50 is arranged behind each of the left rear wheel 6 and the right rear wheel 6 of the tractor 1. The ground leveling unit 50 includes a pair of left and right supports 51 and a pair of left and right ground leveling bodies 52 and 52.

The support body 51 of the earth leveling unit 50 is a rod-shaped member, and is fixed to the earth leveling frame 88 via a bracket or the like so as to project downward. The left support 51 supports the left earth leveling body 52, and the right support 51 supports the right earth leveling body 52.
The ground leveling body 52 is fixed to the lower part of the support body 51 via screws or the like. The ground leveling body 52 is a plate-shaped member, and the left and right leveling bodies 52 are fixed to the support body 51 in an inclined state so that they approach each other as they go upward (so that they have an abbreviated letter shape when viewed from the rear). be done. The lower edge of the ground leveling body 52 is formed in an arc shape.
Further, the support body 51 is configured such that its mounting position in the vertical direction can be adjusted as appropriate. A plurality of screw holes are formed in the ground leveling body 52, and by appropriately selecting the screw holes to be fixed to the support body 51, the angle and position at which the earth leveling body 52 is supported by the support body 51 can be selected.

As described above, the seeding device 10 is attached to the tractor 1, which has relatively large wheels compared to a rice transplanter, because the land leveling unit 50 leveling the field has left wheel marks formed by the traveling of the tractor 1. Even when the seeding operation is carried out using a wheel, it is possible to prevent wheel marks from remaining in the field. Therefore, it is possible to suppress the occurrence of poor germination due to wheel marks remaining in the field.
In addition, since the ground leveling unit 50 is constructed by fixing the left and right leveling bodies 52, which are plate-shaped members, to the support body 51, wheel marks formed when the tractor 1 runs are left behind. It is possible to level a farmland with a simple configuration.

The mudguard section 60 prevents mud from scattering behind the rear wheels 6 when the tractor 1 runs. The mudguard section 60 is arranged behind each of the left rear wheel 6 and the right rear wheel 6 of the tractor 1. The mudguard section 60 is a plate-shaped member, and is erected upward from the front upper end of the float 30. The upper end of the mudguard 60 is located above the upper end of the hopper 12, and the width of the mudguard 60 is larger than the width of the wheels of the tractor 1.

As described above, since the mudguard part 60 suppresses mud from scattering behind the rear wheels 6 when the tractor 1 runs, ) can be prevented from becoming soiled by the scattered mud.

A straw holding frame 90 is provided in front of the front upper end of the float 30. The straw holding frame 90 is arranged in front of the float 30 and behind the mudguard part 60. The straw presser frame 90 is provided with a straw presser part 70.

The straw pressing unit 70 pushes rice straw floating in the mud of the field into the soil.
The straw holding part 70 is configured such that a plurality of rod shapes are arranged side by side in the left-right direction. In the straw holding part 70, the central part of a relatively thin rod-shaped member is used as a base, and the rod-shaped member is bent in a substantially U-shape when viewed from the rear so as to extend from the base in parallel to the left and right. The rod-shaped member, whose extending portion is formed into an approximately 1/4 arc shape in side view, is fixed near the base of the rod-shaped member to the straw presser frame 90 using a fixing tool or the like, and is attached rearwardly and downwardly from the straw presser frame 90. Extend to. The straw presser section 70 is constructed by arranging a plurality of straw presser members formed in this manner and fixed to the straw presser frame 90 in the left-right direction. The tip (lower end) of the rod-shaped member constituting the straw holding part 70 is located below the float 30.

As described above, the rice straw floating in the mud of the field can be pressed into the soil by the straw holding part 70 while sowing work is performed, and the sowing work can be performed efficiently and reliably.
Moreover, since the central portion of the rod-shaped member near the base is fixed to the straw presser frame 90 using a fixture or the like, the state of fixation to the straw presser frame 90 can be stabilized.

In addition to being constructed in this way, the straw holding part 70 may also be constructed by forming a relatively thin rod-shaped member into a substantially 1/4 arc shape when viewed from the side and extending rearward and downward from the straw holding frame 90. It is also possible to arrange a plurality of ejected objects side by side in the left and right direction. When configured in this way, the rod-shaped member of the straw holding part 70 can be processed relatively easily.

1 Tractor 9 Working machine mounting device 10 Seeding device 11 Feeding device 12 hopper 15 Mounting section 20 Guide section 30 Float 40 Grooving section 50 Ground leveling section 60 Mud guard section 70 Straw holding section

Claims (4)

A seeding device that feeds out seeds from a feeding device and sows them in a field,
It is attached to the rear of the tractor without using other work equipment.
When the tractor performs a seeding operation while traveling, the flow direction of the mud in the field around the seeding device behind the tractor is adjusted so that the mud does not spread and flow outside the seeding device. Equipped with a guide section to guide you,
The guide section includes an outer guide member and an inner guide member,
The outer guide member is a plate-like member whose longitudinal direction is the front-rear direction ,
The inner guide member is a plate-like member formed in a substantially dogleg shape in a plan view, and the inner guide member is a plate member formed in a substantially dogleg shape in a plan view, and the inner guide member is formed in a shape such that a corner portion of the midway portion formed by the substantially doglegged shape protrudes inward. provided on the inner surface of the outer guide member,
Seeding equipment. a ground leveling unit disposed behind the rear wheels of the tractor to level the wheel marks formed when the tractor travels;
The seeding device according to claim 1. a mudguard disposed behind the rear wheels of the tractor to prevent mud from scattering rearward when the tractor runs;
The seeding device according to claim 1 or claim 2. Equipped with a straw holding part that pushes rice straw floating in the mud of the field into the soil.
The seeding device according to any one of claims 1 to 3.

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