WO2017188313A1 - Repiqueuse de riz - Google Patents

Repiqueuse de riz Download PDF

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Publication number
WO2017188313A1
WO2017188313A1 PCT/JP2017/016533 JP2017016533W WO2017188313A1 WO 2017188313 A1 WO2017188313 A1 WO 2017188313A1 JP 2017016533 W JP2017016533 W JP 2017016533W WO 2017188313 A1 WO2017188313 A1 WO 2017188313A1
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WO
WIPO (PCT)
Prior art keywords
leveling device
shaft
supported
leveling
rice transplanter
Prior art date
Application number
PCT/JP2017/016533
Other languages
English (en)
Japanese (ja)
Inventor
市川　祐介
Original Assignee
ヤンマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Publication of WO2017188313A1 publication Critical patent/WO2017188313A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B49/00—Combined machines
    • A01B49/04—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings

Definitions

  • the present invention relates to a rice transplanter equipped with a leveling device.
  • Patent Document 1 discloses a mechanism having a configuration in which the height of the leveling device is electrically adjusted.
  • the rise of the leveling device due to stones falling on the field is detected to raise the seedling platform, and the revolving arm is installed in the link mechanism from the electric drive source to the vertical movement of the leveling device.
  • the breakage of the adjusting mechanism that may occur when the leveling device is greatly raised is prevented.
  • the technology that makes it possible to adjust the height of the leveling device electrically is desirable from the viewpoint of reducing the heavy weight of the leveling device and the burden on the operator. And it is desirable to provide the mechanism for preventing the damage by the pushing-up of the leveling device also in the electric height adjusting mechanism.
  • the electric height adjusting mechanism of the leveling device is required to have a simple structure with a small number of parts while preventing damage due to sudden thrusting to the leveling device.
  • a rice transplanter comprising a leveling device, a support link mechanism that supports the leveling device so as to be movable up and down, and a height adjustment device that electrically adjusts the height of the leveling device
  • the height adjustment device is electrically driven.
  • a rotating member that is rotated by driving of the electric drive source, and is supported from below by the rotating member, and the ground leveling is performed via the support link mechanism as the rotating member rotates.
  • a supported member that moves the apparatus up and down, and the supported member is allowed to move upward in a state where the supported member is supported by the rotating member.
  • the supported member is guided in an arc shape centering on a link support shaft located closest to the supported member in the support link mechanism that moves up and down the leveling device.
  • the output shaft of the electric drive source, the rotating shaft of the rotating member, and the rotating shaft of the link support shaft are arranged so as to be parallel to each other.
  • the height adjusting device includes fixing means for fixing the leveling device at a raised position.
  • the electric height adjusting mechanism of the leveling device in the electric height adjusting mechanism of the leveling device, it is possible to provide a simple structure with a small number of parts while preventing damage due to a sudden push-up to the leveling device.
  • FIG. 1 is a diagram showing the overall structure of the rice transplanter.
  • the rice transplanter 1 includes an engine 2, a power transmission unit 3, a planting unit 4, and a lifting unit 5.
  • the planting unit 4 is connected to the airframe via the lifting unit 5. By controlling the operation of the lifting unit 5, the planting unit 4 can be automatically lifted up and down.
  • the planting unit 4 is driven by the power transmitted from the engine 2 to the planting unit 4 via the power transmission unit 3.
  • the rice transplanter 1 plants seedlings in the field by the planting unit 4 while traveling by driving the engine 2.
  • the driving force from the engine 2 is transmitted to the PTO shaft 7 through the transmission 6 in the power transmission unit 3.
  • the PTO shaft 7 is provided to protrude rearward from the transmission 6. Power is transmitted from the PTO shaft 7 to the planting center case 8 via the universal joint, and the planting unit 4 is driven.
  • a drive shaft 9 is provided rearward from the transmission 6, and a driving force is transmitted from the drive shaft 9 to the rear axle case 10.
  • a leveling drive shaft 11 extends further rearward from the rear axle case 10, and a driving force is transmitted from the leveling drive shaft 11 to a leveling device 30 (to be described later) through a universal joint.
  • the planting unit 4 includes a planting arm 12, a planting claw 13, a seedling stage 14, a float 15, a leveling device 30 and the like.
  • the planting claw 13 is attached to the planting arm 12.
  • the planting arm 12 is rotated by the power transmitted from the planting center case 8.
  • a seedling is supplied to the planting claw 13 from a seedling stage 14.
  • the planting claws 13 are inserted into the field, and seedlings are planted so as to have a predetermined planting depth (the amount of nail protrusion of the planting claws 13).
  • a rotary planting claw is employed, but a crank type may be used.
  • FIG. 2 is a diagram showing the configuration of the planting part of the rice transplanter.
  • the planting unit 4 has a plurality of floats arranged in the left-right direction (this embodiment shows a six-planted rice transplanter, and a center float 15A leveling the center two segments, its Two side floats 15B) that are arranged on the sides and level the two sides are provided.
  • Each of the floats 15A and 15B is attached to a planting frame 51 located at the lower part of the planting unit 4. More specifically, the front end of each float is supported so as to be swingable in the vertical direction with respect to the planting frame 16, and the rear end of each float is linked to the rotation support shaft 17 provided on the planting frame 51. It is attached to be movable up and down via.
  • a leveling device 30 for headland leveling is disposed in front of the float 15.
  • a part of the power from the drive shaft 9 is branched to the leveling drive shaft 11 via the rear axle case 10 and transmitted from the leveling drive shaft 11 to the leveling transmission shaft 31 via the universal joint. And it transmits to the drive shaft 35 extended toward the both sides through the universal joint 32, the input shaft 33, and the transmission case 34 from the leveling transmission shaft 31.
  • a plurality of rotors 36 are fixed to each drive shaft 35, and the rotor 36 is rotated by the rotational drive of the drive shaft 35 so that the field is leveled.
  • the ground leveling device 30 is arranged so that the center is disposed forward and is inclined from the front toward the rear as it goes from the center to both sides. That is, the transmission case 34 disposed in the center is provided so as to be positioned in front of the drive shaft 35 and the rotor 36, and is disposed in a letter C shape when viewed from above. With such a configuration, a space is secured behind the center portion of the leveling device 30, and the center float 15A can be disposed near the front using the space.
  • the center float 15A disposed in the center is used as a sensing float for detecting the field ground contact surface.
  • the planting part height (distance between the field and the planting part 4) is determined from the angle of the center float 15A that swings up and down in accordance with the unevenness of the rice field.
  • the accuracy of sensing by the center float 15A is improved by arranging the center float 15A forward using the configuration of the leveling device 30.
  • FIG. 3 is a front perspective view showing the overall configuration of the leveling device.
  • FIG. 4 is an enlarged rear perspective view showing the internal structure of the height adjusting device of the leveling device.
  • FIG. 5 is an enlarged side view showing the structure of the height adjusting device of the leveling device, and is a side view seen from the right of the rice transplanter.
  • the leveling device 30 is attached to the seedling stage frame 50 of the planting unit 4 via the support link mechanism 40.
  • the support link mechanism 40 supports the leveling device 30 such that it can move up and down (turn) with respect to the planting unit 4. That is, the leveling device 30 (the transmission case 34, the drive shaft 35, and the leveling rotor 36) can change the height with respect to the planting part 4 according to the raising and lowering of the support link mechanism 40.
  • the support link mechanism 40 connects the link support shaft 41 provided along the extending direction (the left-right direction of the machine body) of the leveling device 30, the links 42 fixed to both ends of the link support shaft 41, and the link 42 and the leveling device 30.
  • a support arm 43 that supports the leveling device 30 and an auxiliary link 44 that connects the lower end of the support arm 43 and the seedling support frame 50 are provided.
  • the link support shaft 41 is rotatably supported by the seedling stage frame 50 via the arm 45 at both ends.
  • the link 42 rotates and the support arm 43 moves up and down as the link support shaft 41 rotates, so that the seedling mounting frame 50 (planting unit) of the leveling device 30 is moved.
  • the height with respect to 4) can be changed.
  • An electric height adjusting device 60 that rotates the link support shaft 41 is provided on the middle of the link support shaft 41 on the right side of the body. By operating the height adjusting device 60, the link support shaft 41 can be rotated to adjust the height of the leveling device 30.
  • the height adjusting device 60 is supported by the seedling stand frame 50.
  • the seedling stand frame 50 includes a planting frame 51 having a square pipe structure, a side frame 52 provided upward from both side end portions of the planting frame 51, and a rolling arm that is passed to the upper and lower middle portions of the side frame 52. 53 and a pin holder 54 passed to the upper end of the side frame 52.
  • the bracket 57 to which the auxiliary link 44 of the support link mechanism 40 is fixed is provided on both sides of the planting frame 51.
  • brackets 58 to which the arm 45 of the support link mechanism 40 is fixed are provided on both sides of the rolling arm 53.
  • a bracket 59 for fixing the height adjusting device 60 is provided on the rolling arm 53. Then, the auxiliary link 44 is fixed to the bracket 57, the arm 45 is fixed to the bracket 58, and the height adjusting device 60 is fixed to the bracket 59, so that the support link mechanism 40 and the leveling device 30 are transferred to the seedling stand frame 50. Supported by
  • the height adjusting device 60 includes a rotation bracket 61, a guide pin 62, a support frame 63, a guide hole 64, a sector gear 65, an electric motor 66, a potentiometer 67, and the like in the cover 70.
  • the rotation bracket 61 is a member that is fixed to the link support shaft 41 and protrudes in the radial direction of the link support shaft 41.
  • the link support shaft 41 is rotated with the rotation of the rotation bracket 61.
  • a guide pin 62 protruding toward the side (the axial direction of the link support shaft 41) is provided at the tip of the rotating bracket 61.
  • the link support shaft 41 is a link member that is closest to the guide pin 62 in the support link mechanism 40. The weight of the leveling device 30 applied to the link support shaft 41 is transmitted to the guide pin 62 via the rotation bracket 61.
  • the support frame 63 is a flat member fixed to the rolling arm 53 via the bracket 59.
  • the support frame 63 is provided along the radial direction of the link support shaft 41.
  • a cover 70, an electric motor 66, and a potentiometer 67 are fixed to the support frame 63, and a sector gear 65 is rotatably provided.
  • a guide hole 64 through which the guide pin 62 is inserted is formed in the middle portion of the support frame 63.
  • the guide hole 64 is formed in an arc shape around the link support shaft 41.
  • the sector gear 65 is a rotating member that is rotatably supported by the support frame 63.
  • the sector gear 65 is a fan-shaped gear and functions as a support member that directly supports the guide pin 62 on its upper surface.
  • the weight applied to the guide pin 62 as a supported member is supported from below by the sector gear 65, and as a result, the load applied to the rotating bracket 61 provided with the guide pin 62, that is, fixed to the rotating bracket 61.
  • the weight of the leveling device 30 applied to the link support shaft 41 is supported from below by the sector gear 65 via the guide pins 62.
  • the electric motor 66 is an electric drive source that rotationally drives the sector gear 65, and has an output gear (not shown) that meshes with the gear of the sector gear 65 on its output shaft.
  • the output shaft of the electric motor 66 is disposed so as to be parallel to the axial direction of the link support shaft 41. That is, the output direction of the electric motor 66 is set in the left-right direction of the machine body, and the direction of the output shaft is the same as the direction of the rotation shaft of the sector gear 65 and the direction of the rotation shaft of the link support shaft 41. Placed in.
  • the output directions of the members in parallel, the thickness when the members are arranged can be suppressed, and the height adjusting device 60 can be accommodated in a compact manner.
  • the radius of the sector gear 65 is set larger than the radius of the output gear of the electric motor 66. From this, the output of the electric motor 66 is decelerated by the sector gear 65 and transmitted.
  • the operating position of the guide pin 62 that is the output destination is set to a position different from the rotation fulcrum of the sector gear 65.
  • the position of the guide pin 62 is disposed on the inner side of the output fulcrum of the sector gear 65 with respect to the output point of the electric motor 66. Further, the distance between the rotation fulcrum of the sector gear 65 and the guide pin 62 is set to be smaller than the rotation radius of the guide pin 62 (the distance between the link support shaft 41 and the guide pin 62).
  • the transmission of power from 65 to the guide pin 62 is also decelerated.
  • the output of the electric motor 66 can be efficiently transmitted to the link support 41 by performing two-stage deceleration in the transmission path from the electric motor 66 to the link support 41.
  • the potentiometer 67 can obtain a more accurate detection value by detecting the rotation angle of the rotation shaft of the sector gear 65, and use the detection value of the electric motor 66. More accurate control is possible when controlling the output.
  • the cover 70 is an exterior that covers the height adjusting device 60, and in particular, is a protective member that protects the electric system including the electric motor 66. As shown in FIG. 5, a part of the cover 70 is cut out on the side opposite to the side on which the rotating bracket 61 is disposed, and the guide hole 64 and the guide pin 62 in the guide hole 64 are cut through the cutout. It is possible to visually check the position of the ground leveling device 30, making it easy to make initial settings and check for problems when adjusting the height of the leveling device 30.
  • fixing holes 68 are formed in the support frame 63.
  • a fixing hole 69 that can communicate with the fixing hole 68 is formed at a position corresponding to the fixing hole 68 of the rotating bracket 61.
  • the fixing hole 68 is provided near the link support shaft 41 that is the rotation center of the rotation bracket 61 with respect to the guide pin 62 and corresponds to the position where the guide pin 62 has moved to the uppermost position. It is provided in the position to do.
  • the fixing hole 69 is provided in the rotating bracket 61 so as to be the same distance as the distance between the link support shaft 41 and the fixing hole 68.
  • the rotating bracket 61 can be maintained at the uppermost position. That is, the state where the leveling device 30 is stored in the uppermost position can be maintained. Thereby, even when the function of the height adjusting device 60 is hindered, it is possible to continue the planting operation with the leveling device 30 stored. At this time, if there is a problem with the electric motor 66, the leveling device 30 can be lifted manually.
  • the height adjusting device 60 drives the sector gear 65 by the electric motor 66 and moves the guide pin 62 up and down along the guide hole 64 in an arc shape, thereby rotating the pivot bracket 61 (link support shaft). 41) is rotated to adjust the height of the leveling device 30.
  • the guide pin 62 that receives the weight of the leveling device 30 is supported by the sector gear 65 from below, so that upward movement is permitted. That is, when the reaction force from the ground is applied to the leveling device 30 adjusted to a predetermined height by the height adjusting device 60 and the upward push-up occurs, the guide pin 62 is allowed to move upward. Therefore, a large external force suddenly applied to the leveling device 30 and the support link mechanism 40 can be released upward.
  • the guide pin 62 is not allowed to move upward using a spring, a link mechanism or the like, so that the leveling device 30 is pushed up with a simple structure with a small number of parts.
  • An avoidance mechanism can be provided.
  • an input shaft 33, an idler shaft 80 and a drive shaft 35 are disposed in the leveling transmission case 34.
  • a bevel gear 81 is fixed to the end of the input shaft 33.
  • the bevel gear 81 meshes with a bevel gear 82 fixed to the middle part of the idler shaft 80.
  • Tapered gears 83 are disposed at both ends of the idler shaft 80.
  • the taper gear 83 meshes with a spur gear 84 provided at the end of the drive shaft 35.
  • the spur gear 84 may be a tapered gear.
  • the leveling transmission case 34 is disposed in the center, and the drive shafts 35 on both the left and right sides are tilted rearward from the base point. Therefore, in the leveling transmission case 34, the drive shaft 35 is disposed laterally around the input shaft 33, and the idler shaft 80 is disposed between the input shaft 33 and the drive shaft 35, whereby the drive shaft 35 is disposed on both sides. The direction of rotation is the same.
  • the idler shaft 80 is disposed behind the input shaft 33, and the idler shaft 80 meshes with the drive shaft 35 from the rear side.
  • the position of the input shaft 33 can be moved backward.
  • the leveling transmission case 34 can be comprised compactly, and between irregular regions can be made small.
  • the intersection point Q of the central axes of the drive shafts 35 arranged on the left and right sides is located in the middle of the input shaft 33 in the leveling transmission case 34.
  • the bevel gear 81 of the input shaft 33 and the bevel gear 82 of the idler shaft 80 mesh with each other behind the intersection Q, and the size of the leveling transmission case 34 in the front-rear direction can be made compact.
  • the idler shaft 80 is disposed offset to the rear of the input shaft 33 and the drive shafts 35 and 35, thereby preventing the lateral width of the leveling transmission case 34 from increasing.
  • the leveling transmission case 34 is configured to reduce the width in the left-right direction while reducing the width in the front-rear direction.
  • the input shaft 33 is provided to be inclined upward with respect to the horizontal direction. Transmission of power to the input shaft 33 is performed via the universal joint 32, but the rear axle case 10 that is a source of the power for the ground leveling device 30 is disposed above. Therefore, if the operating angle of the universal joint 32 becomes too large, a problem that the life of the universal joint 32 is shortened is included.
  • the input shaft 33 is provided at the front height and the rear height and tilted upward, thereby reducing the load by reducing the folding angle of the universal joint 32, thereby extending the life. .
  • the input shaft 33 is merely tilted, and the portions other than the input shaft 33 are horizontally arranged to have the drive shaft of the rotor 36 on the same plane. Thereby, the power transmitted from the input shaft 33 can be efficiently transmitted to the rotor 36.
  • the present invention can be used for a rice transplanter equipped with a leveling device.
  • SYMBOLS 1 Rice transplanter, 30: Leveling device, 40: Support link mechanism, 41: Link spindle, 50: Seedling stand frame, 60: Height adjusting device, 61: Rotating bracket, 62: Guide pin (Supported member) ), 63: support frame, 64: guide hole, 65: sector gear (rotating member), 66: electric motor (electric drive source)

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transplanting Machines (AREA)
  • Soil Working Implements (AREA)

Abstract

Une repiqueuse de riz selon la présente invention comprend : un dispositif de préparation de sol ; un mécanisme de liaison de support qui soutient le dispositif de préparation de sol de façon à permettre des mouvements vers le haut et vers le bas de celui-ci, et un dispositif de réglage de hauteur qui ajuste électriquement la hauteur du dispositif de préparation de sol, le dispositif de réglage de hauteur comprenant une source d'entraînement électrique, un élément de pivot qui est entraîné par la source d'entraînement électrique et pivote, et un élément soutenu qui est soutenu par l'élément de pivot par le bas et qui déplace le dispositif de préparation de sol vers le haut et vers le bas par l'intermédiaire du mécanisme de liaison de support conjointement avec le pivotement de l'élément de pivot, et dans lequel, dans un état dans lequel l'élément soutenu est soutenu par l'élément de pivot, un mouvement vers le haut de l'élément soutenu est autorisé.
PCT/JP2017/016533 2016-04-28 2017-04-26 Repiqueuse de riz WO2017188313A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-090978 2016-04-28
JP2016090978A JP6796946B2 (ja) 2016-04-28 2016-04-28 田植機

Publications (1)

Publication Number Publication Date
WO2017188313A1 true WO2017188313A1 (fr) 2017-11-02

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PCT/JP2017/016533 WO2017188313A1 (fr) 2016-04-28 2017-04-26 Repiqueuse de riz

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WO (1) WO2017188313A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7033982B2 (ja) * 2018-03-28 2022-03-11 株式会社クボタ 作業機
JP6937726B2 (ja) * 2018-06-26 2021-09-22 株式会社クボタ 水田作業機
JP7034018B2 (ja) * 2018-06-26 2022-03-11 株式会社クボタ 水田作業機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3090837B2 (ja) * 1994-01-26 2000-09-25 三菱農機株式会社 作業用走行車における作業部のローリング制御装置
JP3440947B2 (ja) * 2002-05-31 2003-08-25 井関農機株式会社 苗移植機
JP4484755B2 (ja) * 2005-04-27 2010-06-16 株式会社クボタ 田植機の代掻き用回転体
JP2013176331A (ja) * 2012-02-29 2013-09-09 Iseki & Co Ltd 苗移植機
JP2015213444A (ja) * 2014-05-08 2015-12-03 ヤンマー株式会社 乗用田植機
JP2015213443A (ja) * 2014-05-08 2015-12-03 ヤンマー株式会社 乗用田植機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1389091A (zh) * 2002-04-13 2003-01-08 洪全明 回转式多排活动秧爪手插秧机运动设计方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3090837B2 (ja) * 1994-01-26 2000-09-25 三菱農機株式会社 作業用走行車における作業部のローリング制御装置
JP3440947B2 (ja) * 2002-05-31 2003-08-25 井関農機株式会社 苗移植機
JP4484755B2 (ja) * 2005-04-27 2010-06-16 株式会社クボタ 田植機の代掻き用回転体
JP2013176331A (ja) * 2012-02-29 2013-09-09 Iseki & Co Ltd 苗移植機
JP2015213444A (ja) * 2014-05-08 2015-12-03 ヤンマー株式会社 乗用田植機
JP2015213443A (ja) * 2014-05-08 2015-12-03 ヤンマー株式会社 乗用田植機

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JP6796946B2 (ja) 2020-12-09

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