JP6677424B2 - Direct sowing machine - Google Patents

Description

  The present invention relates to a direct seeder.

  Conventionally, the technology of a direct sowing machine is known (for example, Patent Document 1). In the device described in Patent Document 1, a seeding part removes seeds in a storage tank from the hole while a pressure-reducing ring makes a hole in the soil with a protrusion. Drain into.

  However, since the projection and the sowing part are spaced apart in the front-rear direction and spaced apart from each other, after the projection makes a hole in the soil until the sowing part discharges the seed to this hole. The time difference increases. Thereby, if a displacement (a displacement in the front-rear and left-right directions, a displacement in the pitching direction, etc.) occurs between the projection and the seeding part during the movement of the apparatus, the seeding part moves to a position (in the hole) aimed at the seed. There was a risk that it would be difficult to discharge.

JP-A-52-93514

  The present invention provides a direct sowing machine capable of accurately discharging seeds to a target position.

According to a first aspect of the present invention, there is provided a rolling portion that rotates about a first shaft supported by a frame, an opening portion that rotates together with the rolling portion to make a hole in soil, and the rotation of the rolling portion. And a sowing unit that discharges seeds, and when the sowing unit is viewed from the axial direction of the first axis, the rolling unit and the sowing unit have a portion overlapping each other, and the sowing unit is A roll provided around the second shaft supported by the frame and provided in the roll case, and a downward discharge port formed at a lower portion of the roll case; The rotation is transmitted to the feeding roll via a first gear provided on the first shaft and a second gear provided on the second shaft, and the seeding unit is viewed from the axial direction of the first shaft. when in, and the rolling section and the feed roll is straight seeder der having portions overlapping each other .

  In a second aspect, the plurality of apertures are juxtaposed in the direction around the axis of the first axis, and the outlet of the seeding part intersects the plurality of apertures and extends in the direction around the axis of the first axis. Are arranged inside a virtual circle extending to

According to a third aspect of the present invention, there is provided a rolling portion which rotates about a first shaft supported by a frame, an opening portion which rotates together with the rolling portion to make a hole in soil, and which is associated with the rotation of the rolling portion. And a sowing unit that discharges seeds, and when the sowing unit is viewed from the axial direction of the first axis, the rolling unit and the sowing unit have a portion overlapping each other, and the sowing unit is A roll provided around the second shaft supported by the frame and provided in the roll case, and a downward discharge port formed at a lower portion of the roll case; The rotation is transmitted to the feeding roll via a first gear provided on the first shaft and a second gear provided on the second shaft, and a discharge port of the seeding unit is closed by a shutter, The rolling section is provided with a predetermined timing at a predetermined timing as the rolling section rotates. Tsu is a straight-seeder which open pin is provided for opening the outlet by moving the data.

  According to the first aspect, it is possible to arrange the opening and the seeding part close to each other. This makes it possible to discharge the seeds to the seeding part near the opening. Thus, it is possible to reduce the time difference between the time when the opening portion makes a hole in the soil and the time when the seeding portion discharges the seed toward a predetermined position with respect to the hole. This makes it possible to discharge the seeds to the target position with high accuracy.

  According to the second aspect, it is possible to arrange the outlet close to the hole while avoiding the outlet interfering with the hole. This makes it possible to reduce the time difference between the time when the opening portion makes a hole in the soil and the time when the seeding portion discharges the seed toward the predetermined position with respect to this hole. This makes it possible to discharge the seeds to the target position with high accuracy.

  According to the third aspect, since the opening portion and the opening pin are provided on the same member (rolling portion), the operation of forming a hole by the opening portion and the opening of the discharge port by the opening pin allow the discharge port to be opened. It becomes easy to synchronize with the operation of discharging the seed. This makes it possible to easily adjust the positional relationship between the position where the holes are formed and the position where the seeds are discharged.

The right view of a direct sowing machine. The left view of a direct seeding machine. The top view of a direct seeding machine. The perspective view of a direct seeding machine. FIG. 4 is a perspective view showing a state in which a gear on a rolling unit side and a gear on a pay-out roll side mesh with each other. Sectional drawing of a sowing part. (A) Right side view when the direct sowing machine is sowing, (b) Diagram showing the soil after sowing by the direct sowing machine, (c) Soil after sowing by the direct sowing machine FIG. The figure when seeing part is seen from the axial direction of the rotation axis of a rolling part. (A) Right side view of a direct sowing machine showing a state where the outlet of the seeding unit is arranged inside the virtual circle, and (b) showing a state where the outlet of the seeding unit is arranged inside the virtual circle. , Bottom view of the direct sowing machine.

  The direct sowing machine 1 is for sowing seeds such as paddy on soil. The direct sowing machine 1 of the present embodiment discharges seeds into the muddy soil while moving the soil. The soil may be a paddy field or a field. The forward, backward, up, down, left, and right directions are defined with the forward direction of the direct sowing machine 1 when the sowing is performed while the straight sowing machine 1 moves straight.

  As shown in FIG. 1 to FIG. 4, the direct sowing machine 1 arranges the first float 10 and the second float 20 at intervals in the front-rear direction, and connects the first float 10 and the second float 20 to a frame. 30, the rolling part 40 and the seeding part 60 are arranged between the first float 10 and the second float 20, and the rolling part 40 and the seeding part 60 are supported by the frame 30, It has a structure in which the hole 50 is fixed to the rolling part 40.

  As described above, the rolling unit 40 and the seeding unit 60 are integrally configured by being supported by the same member (the frame 30). This makes it difficult for positional deviation to occur between the opening 50 fixed to the rolling part 40 and the seeding part 60.

  Hereinafter, the configuration of the direct seeder 1 will be described in detail.

  As shown in FIGS. 1 to 4, a groove generator 11 is attached to the first float 10. The groove generator 11 is provided at the rear of the first float 10. The second float 20 is arranged behind the first float 10. The second float 20 has a plurality of (three in this embodiment) float portions 21. The plurality of float portions 21 are juxtaposed in the left-right direction and are connected to each other. The direct sowing machine 1 is supported by floats 10 and 20 provided before and after so as not to sink in mud.

  The frame 30 has a front end connected to the first float 10 and a rear end connected to the second float 20. In the present embodiment, a plurality of (two) frames 30 are provided, and the plurality of frames 30 are juxtaposed in the left-right direction.

  The frame 30 includes an extending portion 31 extending in the front-rear direction, and a support portion 32 provided at an intermediate portion of the extending portion 31 in the front-rear direction. When viewed from above, the support portion 32 is formed so as to protrude in the left-right direction from the extension portion 31 and forms a gap 33 between the support portion 32 and the extension portion 31.

  A rotation shaft 41 extending in the left-right direction is inserted into the support portion 32 of the frame 30. The rotation shaft 41 is rotatably supported by the support portion 32. As shown in FIGS. 2 and 5, the rolling part 40 and the gear 43 are fixed to the rotating shaft 41. The rolling part 40, the rotating shaft 41, and the gear 43 rotate integrally in the direction X around the rotating shaft 41. The direction X around the axis is a direction in which the rotating shaft 41 rotates around the axis.

  As shown in FIG. 5, the opening 50 is fixed to the outer periphery of the rolling part 40. The opening 50 is fixed to the rolling part 40 via a bracket 42. The opening 50 rotates integrally with the rolling part 40.

  A plurality of apertures 50 are provided. The plurality of apertures 50 are juxtaposed in the direction X around the rotation shaft 41. In the present embodiment, the 16 apertures 50 are juxtaposed at equal intervals in the direction X around the rotation shaft 41.

  As shown in FIG. 6, the seeding unit 60 includes a hopper 61, a roll case 62, and a feed roll 63.

  The hopper 61 is for storing seeds. A roll case 62 is connected to a lower portion of the hopper 61. The roll case 62 is inserted into the gap 33 of the frame 30. A feeding roll 63 is provided in the roll case 62.

  As shown in FIG. 4, a rotating shaft 64 extending in the left-right direction is inserted into the extending portion 31 and the supporting portion 32 of the frame 30. The rotation shaft 64 is rotatably supported by the extending part 31 and the support part 32. As shown in FIG. 5, a feeding roll 63 and a gear 68 are fixed to the rotating shaft 64. The feeding roll 63, the rotation shaft 64, and the gear 68 rotate integrally in the direction Y around the rotation shaft 64. The direction Y around the axis is a direction in which the rotating shaft 64 rotates around the axis.

  The gear 43 on the rolling part 40 side and the gear 68 on the pay-out roll 63 mesh with each other. As a result, the rotation of the rolling portion 40 is transmitted to the feeding roll 63 via the gears 43 and 68, and the feeding roll 63 rotates. The rotation direction of the rolling part 40 and the rotation direction of the feeding roll 63 are opposite to each other.

  As shown in FIG. 6, a groove 63a is formed on the outer peripheral surface of the feeding roll 63. A plurality of grooves 63a are provided. The plurality of grooves 63a are juxtaposed in the rotation direction of the feeding roll 63. A partition plate 65 that partitions the space inside the roll case 62 into upper and lower portions is provided on the side of the feeding roll 63.

  The lower part of the roll case 62 is opened downward to form a discharge port 66 for discharging seeds. The discharge port 66 is provided below the partition plate 65. A shutter 67 for opening and closing the discharge port 66 is provided below the roll case 62. The shutter 67 is urged in a direction to close the discharge port 66. The shutter 67 is provided with a shutter pin 67a. The rolling portion 40 is provided with an opening pin 40a. A plurality (eight in the present embodiment) of the release pins 40a are provided and juxtaposed at equal intervals in the direction X around the axis. The release pin 40a rotates integrally with the rolling part 40. A shutter pin 67a is arranged on the rotation path of the release pin 40a.

  The seeds in the hopper 61 are guided to the roll case 62. Then, the seeds that have entered the groove 63 a of the feeding roll 63 pass through the partition plate 65 by rotation of the feeding roll 63, and are guided to the discharge port 66 below the roll case 62.

(1) When the release pin 40a is not in contact with the shutter pin 67a while the rolling unit 40 is rotating, the shutter 67 closes the discharge port 66. At this time, no seed is discharged from the discharge port 66.
(2) When the rolling pin 40 is rotating and the release pin 40a is in contact with the shutter pin 67a, the shutter 67 rotates with respect to the roll case 62 by the pressing force of the release pin 40a. The discharge port 66 is opened. When the outlet 66 is opened, the seed is discharged from the outlet 66. When the rolling portion 40 further rotates from this state, the release pin 40a separates from the shutter pin 67a, and the release pin 40a comes into non-contact with the shutter pin 67a, and the discharge port 66 is closed by the shutter 67. . As a result, the state (1) is reached. The state of (1) and the state of (2) are alternately repeated as the rolling unit 40 continues to rotate.

  Therefore, the release pin 40a opens the discharge port 66 by moving the shutter 67 at a predetermined timing (timing when the release pin 40a contacts the shutter pin 67a) as the rolling part 40 rotates. As a result, every time the release pin 40a comes into contact with the shutter pin 67a, the discharge port 66 is opened and the seed is discharged, so that the seed is discharged intermittently from the discharge port 66.

  In addition, the seeding part 60 should just have the structure which discharges a seed from the discharge opening 66 when the rolling part 40 is rotating, and when the rolling part 40 is rotating, the discharge opening is sufficient. The configuration for discharging the seeds from 66 is not limited to that of the present embodiment.

  Hereinafter, the operation of the direct sowing machine 1 will be described.

  As shown in FIG. 7A and FIG. 7B, when the direct sowing machine 1 moves forward, the rolling unit 40 rotates in the direction X around the axis. At this time, the opening 50 rotates integrally with the rolling part 40. The opening 50 scoops the soil backward when it reaches the lower part of the rolling part 40. Thereby, a hole H is made in the soil. At the rear of the opening edge of the hole H, the soil picked up by the opening 50 is deposited to form an embankment H1. Further, as the direct sowing machine 1 moves forward and the rolling part 40 rotates, the next opening part 50 makes a hole H in the soil. Thereby, holes H are formed in the soil at intervals in the moving direction of the direct sowing machine 1. Note that the size of the interval D1 between the adjacent holes H is determined in accordance with the size of the interval between the opening portions 50 adjacent in the axial direction X. Specifically, as the distance between the opening portions 50 adjacent in the axial direction X increases, the distance D1 between the adjacent holes H increases. When the rolling part 40 is rotating, the outlet 66 is opened at the predetermined timing, and the seed S is intermittently discharged from the outlet 66. The size of the interval D2 between the adjacent seeds S discharged to the soil is determined according to the size of the interval between the open pins 40a adjacent in the direction X around the axis. Specifically, as the distance between the open pins 40a adjacent in the axial direction X increases, the distance D2 between the adjacent seeds S increases. When the direct sowing machine 1 is moving, the sowing unit 60 discharges the seed S from the outlet 66 so as to pass between the openings 50 adjacent in the axial direction X.

  Therefore, when the direct sowing machine 1 is moved, the rolling part 40 rotates, whereby the hole 50 makes a hole H in the soil, and the seeding part 60 discharges the seed S. The drilling operation by the opening 50 and the seeding operation by the seeding unit 60 are performed on the soil leveled by the groove generator 11 of the first float 10.

  In the present embodiment, seeds S are discharged every other space between adjacent holes H (see FIG. 7B). The discharged seed S is restricted in its forward moving range by the embankment H1 formed at the opening edge of the hole H. In addition, regarding the positional relationship between the position where the hole H is formed and the position where the seed S is discharged, the number of the opening portions 50, the interval between the adjacent opening portions 50, the number of the opening pins 40a, the number of the opening pins 40a It can be adjusted by changing the distance between them. Therefore, it is also possible to configure so as to discharge the seeds S between the adjacent holes H (see FIG. 7C). Further, the seed S may be configured to be discharged into the hole H.

  The power for moving the direct sowing machine 1 is not particularly limited. A human or an animal such as a cow may move the direct sowing machine 1. In this case, for example, a hook, a string, or the like is hooked on the frame 30, and the direct sowing machine 1 is pulled. Alternatively, a vehicle may be connected to the direct seeder 1 so that the direct seeder 1 is moved by the vehicle.

  Hereinafter, the positional relationship among the rolling part 40, the opening part 50, and the seeding part 60 will be described.

  The discharge port 66 of the seeding unit 60 is disposed such that the position of the rotating shaft 41 of the rolling unit 40 in the axial direction is equal to the opening 50. The axial direction of the rotating shaft 41 of the rolling part 40 is a direction in which the rotating shaft 41 extends, and in the present embodiment, is a left-right direction. Therefore, the discharge port 66 and the opening 50 are arranged so that the positions in the left-right direction are equal (see FIG. 9B). Further, as shown in FIG. 8, when the seeding part 60 is viewed from the axial direction (left-right direction) of the rotation shaft 41 of the rolling part 40, the rolling part 40 and the seeding part 60 The portion 60 has a portion that overlaps with the other portion (see a hatched region α in FIG. 8).

  Thereby, it becomes possible to arrange the opening 50 and the seeding part 60 close to each other. Thereby, the seeds can be discharged to the sowing unit 60 in the vicinity of the hole 50. This makes it possible to reduce the time difference between the time when the opening 50 pierces the soil and the time when the sowing unit 60 discharges the seed toward a predetermined position with respect to this hole. This makes it possible to discharge the seeds to the target position with high accuracy. The predetermined position is a seed discharge position determined based on the position of the hole formed by the opening 50. The predetermined position is, for example, between adjacent holes (see FIG. 7B) or inside a hole.

  The plurality of apertures 50 are arranged so that the position of the rotating shaft 41 of the rolling part 40 in the axial direction (left-right direction) is shifted with respect to the rolling part 40 (see FIG. 5). Accordingly, when a virtual circle C that intersects the plurality of holes 50 and extends in the direction X around the rotation axis 41 of the rolling part 40, a space is secured inside the virtual circle C. The discharge port 66 of the seeding unit 60 is disposed in the space (see FIGS. 9A and 9B).

  Therefore, in the direct seeding machine 1, the outlet 66 of the seeding part 60 is disposed inside the virtual circle C (see FIGS. 9A and 9B). This makes it possible to dispose the outlet 66 close to the hole 50 while avoiding the outlet 66 interfering with the hole 50. This makes it possible to reduce the time difference between the time when the hole 50 pierces the soil and the time when the sowing unit 60 discharges the seed toward the predetermined position with respect to this hole. This makes it possible to discharge the seeds to the target position with high accuracy.

  As shown in FIG. 6, the rolling part 40 is provided with an opening 50 for making a hole in the soil as the rolling part 40 rotates, and the shutter is opened at the predetermined timing. An opening pin 40a is provided to move the opening 67 to open the discharge port 66.

  As a result, since the opening 50 and the release pin 40a are provided on the same member (rolling part 40), the operation of forming a hole by the opening 50 and the discharge port 66 being opened by the release pin 40a are discharged. The operation of discharging the seeds from the outlet 66 can be easily synchronized. This makes it possible to easily adjust the positional relationship between the position where the holes are formed and the position where the seeds are discharged.

DESCRIPTION OF SYMBOLS 1 Direct seeding machine 40 Rolling part 41 Rotation axis 50 Open hole part 60 Seeding part 66 Discharge port

Claims (3)

A rolling portion that rotates about a first shaft supported by a frame, an opening that rotates with the rolling portion to make a hole in the soil, and a seed that discharges seeds with the rotation of the rolling portion. And a part,
When seeing the seeding part from the axial direction of the first axis, the rolling part and the seeding part have a portion that overlaps each other,
The seeding unit is provided in a roll case, has a feeding roll that rotates about a second axis supported by the frame, and a downward discharge port formed at a lower portion of the roll case,
The rotation of the rolling portion is transmitted to the feeding roll via a first gear provided on the first shaft and a second gear provided on the second shaft ,
A direct sowing machine , wherein the rolling part and the payout roll have portions that overlap each other when the seeding part is viewed from the axial direction of the first shaft . A plurality of the apertures are juxtaposed in a direction around the first axis,
The direct sowing machine according to claim 1, wherein the discharge port of the seeding unit is arranged inside a virtual circle that intersects the plurality of holes and extends in a direction around the first axis. A rolling portion that rotates about a first shaft supported by a frame, an opening that rotates with the rolling portion to make a hole in the soil, and a seed that discharges seeds with the rotation of the rolling portion. And a part,
When seeing the seeding part from the axial direction of the first axis, the rolling part and the seeding part have a portion that overlaps each other,
The seeding unit is provided in a roll case, has a feeding roll that rotates about a second axis supported by the frame, and a downward discharge port formed at a lower portion of the roll case,
The rotation of the rolling portion is transmitted to the feeding roll via a first gear provided on the first shaft and a second gear provided on the second shaft,
The discharge port of the seeding unit is closed by a shutter,
Wherein the rolling unit, said rolling unit with to rotate, straight it characterized in that opening pin for opening the discharge opening by moving the shutter at a predetermined timing are provided seeder.

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