WO2017104495A1 - 田植機 - Google Patents
田植機 Download PDFInfo
- Publication number
- WO2017104495A1 WO2017104495A1 PCT/JP2016/086279 JP2016086279W WO2017104495A1 WO 2017104495 A1 WO2017104495 A1 WO 2017104495A1 JP 2016086279 W JP2016086279 W JP 2016086279W WO 2017104495 A1 WO2017104495 A1 WO 2017104495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- float
- planting
- field
- rice transplanter
- Prior art date
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/006—Other parts or details or planting machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
Definitions
- the present invention relates to a rice transplanter.
- Patent Document 1 discloses a configuration in which a sensor for detecting the surface of a field which is a rice field position is provided immediately before the planting position, thereby detecting the amount of float subsidence and correcting the deviation of the float sensing.
- the present invention is a technique for improving detection accuracy and the like by a sensor in a rice transplanter that detects a field surface by a sensor provided separately from a float and corrects a deviation between a field ground surface detected by the float and an actual field surface. It is an issue to provide.
- the rice transplanter of the present invention is a rice transplanter provided with a float for detecting a field ground contact surface, provided separately from the float, and provided with a sensor for detecting a field surface immediately before a planting position, A detection unit that follows the surface of the field, and a support unit that swingably supports the detection unit, the detection unit extending in a substantially horizontal direction with a stay coupled to the support unit,
- the grounding portion is in contact with the field surface, and is provided between the stay and the grounding portion, and includes an extending portion extending in the vertical direction.
- the shape of the grounding portion is wide at the bottom and wide at the top. It is formed so as to be narrow.
- the lower part of the grounding part By making the lower part of the grounding part wide, it is possible to increase the grounding area with the field and ensure the contact pressure without unnecessarily increasing the size of the grounding part itself. Further, by making the upper part of the grounding part narrow, it is possible to suppress accumulation of mud or the like on the grounding part. Thereby, accuracy deterioration can be suppressed while improving the sensing accuracy of the sensor.
- the shape of the extending portion was formed such that the front side in the traveling direction was narrow and the rear side in the traveling direction was wide.
- the muddy water flow can be effectively flowed backward while traveling, and the influence of the fluid force applied to the sensor can be reduced. Thereby, deterioration of the sensing accuracy of the sensor can be suppressed.
- the detection unit is formed by integral molding.
- any member may be used as long as it is integrally formed of a material according to the application of the present invention, such as resin or light metal.
- the present invention it is possible to improve the detection accuracy by the sensor and suppress the deterioration of the detection accuracy.
- the rice transplanter 1 includes an engine 2, a power transmission unit 3, a planting unit 4, and an elevating unit 5.
- the planting unit 4 is connected to the airframe via the lifting unit 5, and can be automatically moved up and down by controlling the operation of the lifting unit 5.
- Power from the engine 2 is transmitted 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 transmission case 8 through 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. Further, power is transmitted from the rear axle case 10 to the leveling device 20 disposed behind the rear axle case 10.
- the planting part 4 includes a planting arm 11, a planting claw 12, a seedling stage 13, a float 14 and the like.
- the planting claw 12 is attached to the planting arm 11.
- the planting arm 11 is rotated by the power transmitted from the planting transmission case 8.
- the seedling is supplied to the planting claw 12 from the seedling mount 13. With the rotational movement of the planting arm 11, the planting claws 12 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 12).
- a rotary planting claw is employed, but a crank type may be used.
- the planting unit 4 includes a plurality of floats arranged in the left-right direction (this embodiment shows an eight-row planting rice transplanter, and the center float 14 ⁇ / b> A is arranged on the side thereof. Two side floats 14B and auxiliary floats 14C) arranged at both ends.
- Each float is attached to a planting frame 15 constituting 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 15, and the rear end of each float is linked to a rotation support shaft 16 provided on the planting frame 15. It is attached to be movable up and down via.
- an appropriate sensor such as a potentiometer is attached to the rotation support shaft 16 or the link mechanism 17, and the link height h0 is calculated based on the detection value by the sensor.
- the center float 14A arranged at the center is used as a float detection body for detecting the ground contact surface of the field.
- the target angle ⁇ of the float is determined based on the swing angle of the center float 14A that changes according to the unevenness of the field (the rotation angle in the pitching direction according to the resistance received on the front surface of the float: the float angle ⁇ ).
- the planting part height is controlled so that the float angle ⁇ approaches the target angle ⁇ .
- a sensor 30 that detects the field surface is provided immediately before the planting position of the planting unit 4.
- the sensor 30 extends from the front toward the rear.
- the sensor 30 is supported by the planting frame 15 so as to be swingable in the pitching direction, and hangs down by gravity around the swing fulcrum, so that the rear end portion is in contact with the field surface. That is, the rice transplanter 1 advances so that the sensor 30 always follows the field surface.
- the rotation angle of the sensor 30 is measured by an appropriate angle measurement device such as a potentiometer, and the sensor 30 and the field are measured using the height of the rotation shaft of the sensor 30 and the distance between the rear end of the sensor 30 and the rotation shaft. Can be calculated, and the actual height of the field (the height of the field on which the seedling is planted) can be detected. Thus, by detecting the actual height of the field with the sensor 30, the subsidence amount d of the center float 14A (the amount of subsidence into the mud field) can be measured.
- the sensor 30 is provided separately from the center float 14A used for detecting the ground contact surface of the field, and the sensor 30 detects the height of the field surface in the vicinity of the planting position so that the center is a sensing float.
- the actual planting depth is detected by calculating the amount of settlement of the float 14A. Then, by detecting the actual planting depth by the sensor 30, it is possible to determine whether or not the seedling is properly planted. That is, it is not necessary to adjust the sensitivity according to the field conditions, and the sensitivity adjustment is automatically performed by the elevation control using the sensor 30.
- the planting position in this embodiment is the side of the rear end of the float that rotates via the link mechanism 17. Further, the position immediately before the planting position is a field after being leveled with a float for planting seedlings. In order to sense such a stable field, the uneven shape appearing on the surface of the field is the sensor 30. And the influence of the muddy water flow generated by the float on the sensor 30 can be reduced.
- the sensor 30 is supported by a support portion 32 that is rotatably provided on the swing support shaft 31.
- the support portion 32 is supported so as to be swingable in the pitching direction around the peristaltic support shaft 31, and the sensor 30 follows the unevenness of the field surface by the support portion 32.
- the rotation angle of the swing support shaft 31 is detected by a potentiometer 33, and the amount of settlement of the center float 14A is calculated based on the detected value.
- the senor 30 includes a stay 40 connected to the support part 32, a grounding part 41 that extends in a substantially horizontal direction and contacts the field surface, and the stay 40 and the grounding part 41. And an extending portion 42 extending in the vertical direction so as to connect the two.
- the extending part 42 and the grounding part 41 are extended from the stay 40 in a rake shape. Further, it is formed so as to be bent at a portion connected from the extending portion 42 to the grounding portion 41. By forming it in a rake shape, the influence of the fluid force due to the muddy water flow can be reduced, and the detection performance by the sensor 30 can be stabilized. Moreover, by forming it in a bent shape, the front-rear length can be reduced and the space can be compactly accommodated.
- the sensor 30 is a resin member molded by integral molding or a light metal member molded by integral molding.
- resin mass production can be easily performed and the cost of the sensor 30 can be reduced.
- metal By making it metal, the lifetime of the sensor 30 can be improved.
- the strength of the sensor 30 can be secured while reducing the weight of the sensor 30 by forming it in a hollow shape.
- the cross-sectional shape of the grounding portion 41 is formed such that the lower portion is wide and the upper portion is narrow. That is, the contact area is increased by making the lower part in contact with the field surface wider.
- the sensor 30 itself is configured to be thin while ensuring the surface pressure applied to the sensor 30.
- the amount of mud, water, etc. staying on the ground contact portion 41 can be reduced by narrowing the upper part that does not contact the field surface. Thereby, disturbance of the water flow by the sensor 30 can be suppressed, and accumulation of mud or the like can be prevented.
- the grounding portion 41 is configured to be vertically long, in other words, the vertical width is larger than the horizontal width. Thereby, the rigidity of the sensor 30 can be ensured.
- the cross-sectional shape of the extending part 42 is formed so that the front part is narrow and the rear part is wide. That is, by narrowing the front side in the traveling direction that collides with muddy water, it is possible to reduce the influence of the fluid force of muddy water from the front, suppress the lift of the sensor 30, and suppress deterioration in detection accuracy.
- the shape of the sensor 30 of the present embodiment it is possible to reduce the influence of the muddy water flow accompanying the progress of the rice transplanter 1, and to improve the sensing accuracy.
- the shape of the center float is often different, and a U-shaped float is often used.
- sensors are provided on both sides of the center float.
- the sensor 30 is not installed in order to ensure an equivalent surface pressure. It is preferable to arrange them side by side.
- the present invention is applicable to rice transplanters that perform float sensing.
Abstract
Description
図2に示すように、植付部4は、左右方向に配置される複数のフロート(本実施形態は8条植えの田植機を示しており、センターフロート14A、その側方に配置される二つのサイドフロート14B、及び、両端に配置される補助フロート14C)を備える。各フロートは、植付部4を構成する植付フレーム15に取り付けられる。より具体的には、各フロートの前端は植付フレーム15に対して上下方向に揺動可能に支持され、各フロートの後端は植付フレーム15に設けられる回動支軸16にリンク機構17を介して昇降可能に取り付けられる。
図2及び図3に示すように、センターフロート14Aにおいて、植付部4の植え付け位置の直前方には、圃場表面を検知するセンサ30が設けられる。センサ30は、前方から後方に向けて延出される。センサ30は、植付フレーム15にピッチング方向に揺動自在に支持され、その揺動支点を中心として重力によって垂れ下がるため、後端部が圃場表面に接触した状態が維持される。つまり、センサ30が常に圃場表面を追従するように田植機1が進行する。
Claims (3)
- 圃場接地面を検知するフロートを備える田植機であって、
前記フロートとは別に設けられ、植え付け位置の直前方で圃場表面を検知するセンサを備え、
前記センサは、前記圃場表面を追従する検知部と、該検知部を揺動自在に支持する支持部とを備えるとともに、
前記検知部は、前記支持部と連結されるステーと、略水平方向に延出され、前記圃場表面と接触する接地部と、前記ステーと接地部との間に設けられ、縦方向に延出される延出部とによって構成され、前記接地部の形状を下部が幅広、かつ、上部が幅狭となるように形成したことを特徴とする田植機。 - 前記延出部の形状を進行方向前側が幅狭、かつ、進行方向後側が幅広となるように形成した請求項1に記載の田植機。
- 前記検知部は、一体成形によって成形される請求項1又は2に記載の田植機。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680068123.6A CN108366528B (zh) | 2015-12-17 | 2016-12-06 | 插秧机 |
KR1020187019802A KR20180094037A (ko) | 2015-12-17 | 2016-12-06 | 이앙기 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-246626 | 2015-12-17 | ||
JP2015246626A JP6546523B2 (ja) | 2015-12-17 | 2015-12-17 | 田植機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017104495A1 true WO2017104495A1 (ja) | 2017-06-22 |
Family
ID=59056364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/086279 WO2017104495A1 (ja) | 2015-12-17 | 2016-12-06 | 田植機 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6546523B2 (ja) |
KR (1) | KR20180094037A (ja) |
CN (1) | CN108366528B (ja) |
WO (1) | WO2017104495A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61178820U (ja) * | 1984-10-26 | 1986-11-07 | ||
JPS63277327A (ja) * | 1987-05-06 | 1988-11-15 | Akizo Kubota | レ−キド−ザ−のレ−キ |
JPH0530818A (ja) * | 1991-07-29 | 1993-02-09 | Iseki & Co Ltd | 水田用農作業機の自動昇降制御装置 |
JP2007028936A (ja) * | 2005-07-25 | 2007-02-08 | Matsuyama Plow Mfg Co Ltd | 農作業機 |
JP2014128220A (ja) * | 2012-12-28 | 2014-07-10 | Yanmar Co Ltd | 田植機 |
JP2015173636A (ja) * | 2014-03-14 | 2015-10-05 | ヤンマー株式会社 | 田植機 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100409737C (zh) * | 2006-09-04 | 2008-08-13 | 福田雷沃国际重工股份有限公司 | 改进的插秧机 |
JP6108791B2 (ja) * | 2012-11-28 | 2017-04-05 | 株式会社クボタ | 苗植付け装置 |
CN105722383B (zh) * | 2013-11-15 | 2019-08-20 | 洋马株式会社 | 插秧机 |
CN204031791U (zh) * | 2014-08-13 | 2014-12-24 | 苏州久富农业机械有限公司 | 手扶步进式插秧机 |
-
2015
- 2015-12-17 JP JP2015246626A patent/JP6546523B2/ja active Active
-
2016
- 2016-12-06 CN CN201680068123.6A patent/CN108366528B/zh active Active
- 2016-12-06 WO PCT/JP2016/086279 patent/WO2017104495A1/ja active Application Filing
- 2016-12-06 KR KR1020187019802A patent/KR20180094037A/ko not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61178820U (ja) * | 1984-10-26 | 1986-11-07 | ||
JPS63277327A (ja) * | 1987-05-06 | 1988-11-15 | Akizo Kubota | レ−キド−ザ−のレ−キ |
JPH0530818A (ja) * | 1991-07-29 | 1993-02-09 | Iseki & Co Ltd | 水田用農作業機の自動昇降制御装置 |
JP2007028936A (ja) * | 2005-07-25 | 2007-02-08 | Matsuyama Plow Mfg Co Ltd | 農作業機 |
JP2014128220A (ja) * | 2012-12-28 | 2014-07-10 | Yanmar Co Ltd | 田植機 |
JP2015173636A (ja) * | 2014-03-14 | 2015-10-05 | ヤンマー株式会社 | 田植機 |
Also Published As
Publication number | Publication date |
---|---|
JP2017108695A (ja) | 2017-06-22 |
CN108366528B (zh) | 2021-03-26 |
JP6546523B2 (ja) | 2019-07-17 |
KR20180094037A (ko) | 2018-08-22 |
CN108366528A (zh) | 2018-08-03 |
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