JPH07106089B2 - Ground work equipment lifting structure for work vehicles - Google Patents
Ground work equipment lifting structure for work vehiclesInfo
- Publication number
- JPH07106089B2 JPH07106089B2 JP63262425A JP26242588A JPH07106089B2 JP H07106089 B2 JPH07106089 B2 JP H07106089B2 JP 63262425 A JP63262425 A JP 63262425A JP 26242588 A JP26242588 A JP 26242588A JP H07106089 B2 JPH07106089 B2 JP H07106089B2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- ground work
- work
- reverse
- height
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Landscapes
- Transplanting Machines (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、対地作業装置を昇降駆動するアクチュエータ
と、地面から対地作業装置までの高さを検出する高さセ
ンサーとを備えると共に、高さセンサーの検出高さに基
づき対地作業装置が地面から設定高さを維持するように
アクチュエータを昇降駆動する自動制御手段を備えた作
業車の対地作業装置昇降構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention includes an actuator for lifting and lowering a ground work device, and a height sensor for detecting the height from the ground to the ground work device, and BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground work device lifting structure for a work vehicle including an automatic control means for lifting and lowering an actuator so that the ground work device maintains a set height above the ground based on a detection height of a sensor.
前述のような作業車として乗用型田植機があるが、この
乗用型田植機において通常の植付走行時（前進状態）に
は、対地作業装置である苗植付装置が田面から設定高さ
を維持するように自動的な昇降制御が行われている。そ
して、植付走行中において機体の向きを大きく修正すべ
く機体を後進させる必要がある場合に、前後進切換装置
を後進側に操作すると、苗植付装置の昇降制御を中断し
て苗植付装置を強制的に上昇操作するように構成してい
るものがある。There is a riding-type rice transplanter as a work vehicle as described above, and when the riding-type rice transplanter is running normally (forward movement), the seedling planting device, which is a ground work device, has a set height from the rice field. Automatic lifting control is performed to maintain it. If the forward / reverse switching device is operated to the reverse side when it is necessary to reverse the aircraft to greatly correct the orientation of the aircraft during planting, the raising / lowering control of the seedling planting device is interrupted and the seedling planting is stopped. Some devices are configured to forcibly raise the device.
前述のような構成であると、機体の向きの修正が終わり
前後進切換装置を前進側に戻し操作すると、持ち上げら
れていた苗植付装置が田面近くにまで急激に下降してし
まう。これは、前進側への操作により中断されていた昇
降制御が再開されるので、高さセンサーの検出値が設定
高さよりも高いと判断され、これに基づき苗植付装置が
下降操作されてしまうからである。With the above-described configuration, when the forward / backward movement switching device is returned to the forward side after the correction of the orientation of the machine body is completed, the seedling planting device that has been lifted abruptly descends to near the paddy field. This is because the elevator control that was suspended by the operation to the forward side is restarted, so it is determined that the detection value of the height sensor is higher than the set height, and based on this, the seedling planting device is lowered. Because.
このように、前後進切換装置を前進側に操作した途端に
対地作業装置が急激に下降してしまうと、安全性の面か
ら問題が生ずる。ここで、本発明はこのような問題に着
目してなされたものであり、作業車の安全を確保するこ
とを目的としている。As described above, if the ground work device suddenly descends as soon as the forward / reverse switching device is operated to the forward side, a problem arises in terms of safety. Here, the present invention has been made by paying attention to such a problem, and an object thereof is to ensure the safety of the work vehicle.
本発明の特徴は以上述べたような作業車の対地作業装置
昇降構造において、機体の走行状態を前進状態と後進状
態とに亘り切換操作可能な前後進切換装置を後進側に操
作すると、これに連動して対地作業装置を強制的に上昇
操作する強制上昇操作手段と、この強制上昇操作手段の
作動後に前後進切換装置の後進操作を解除した際におけ
る対地作業装置の自動下降を阻止する牽制手段とを備え
てあることにあり、その作用及び効果は次のとおりであ
る。The feature of the present invention is that when the forward / reverse switching device capable of switching the traveling state of the machine body between the forward traveling state and the reverse traveling state is operated to the reverse side in the ground work device lifting structure for a work vehicle as described above, A forcible raising operation means for forcibly raising the ground work implement in conjunction with it, and a restraining means for preventing automatic lowering of the ground work implement when the reverse operation of the forward / reverse switching device is canceled after the operation of the forced rise operation means. And the action and effect are as follows.
前述のように構成すると、前後進切換装置を後進側に操
作して対地作業装置が持ち上げ操作されている状態で、
前後進切換装置の後進操作を解除（前進側又は中立停止
位置に操作）しても、対地作業装置は下降していかな
い。従って、対地作業装置の自動的な昇降駆動を再開す
るには、操縦者が牽制手段を解除操作しなければならな
いことになる。With the configuration described above, in a state where the forward-reverse switching device is operated to the reverse side and the ground work device is being lifted,
Even if the reverse operation of the forward / reverse switching device is canceled (moved to the forward side or the neutral stop position), the ground work device does not descend. Therefore, in order to restart the automatic lifting drive of the ground work device, the operator must release the restraint means.
以上のように、前後進切換装置の後進操作を解除した途
端に自動的に対地作業装置が下降しないようにする牽制
手段を備えることにより、操縦者が対地作業装置の下降
を止めている牽制手段の解除操作の際に、周囲の安全を
確認できるようになるのである。従って、この周囲の安
全を確認した後に対地作業装置の下降操作を行えばよい
のである。As described above, by providing the restraint means for automatically preventing the ground work device from descending as soon as the reverse operation of the forward / reverse switching device is released, the restraint in which the operator stops the descent of the ground work device. The safety of the surroundings can be confirmed when the means is released. Therefore, it is sufficient to perform the descending operation of the ground work device after confirming the safety of the surroundings.
以下、本発明の実施例を作業車の１つである乗用型田植
機により図面に基づいて説明する。An embodiment of the present invention will be described below with reference to the drawings using a riding type rice transplanter which is one of the work vehicles.
第１図に示すように、植付ミッションケース（１）の後
部に植付アーム（２）、上部に苗のせ台（３）が備えら
れて対地作業装置（４）としての苗植付装置が構成され
ており、機体（図外）から延出された四連リンク機構
（５）に苗植付装置（４）が連結されている。この四連
リンク機構（５）にはこれを昇降操作するアクチュエー
タ（６）としての単動型の油圧シリンダが取り付けられ
ると共に、植付ミッションケース（１）の下面には、泥
面（６）から苗植付装置（４）までの高さを検出するソ
リ状の高さセンサー（７）が取り付けられている。この
高さセンサー（７）は横軸芯（P1）周りに揺動自在に、
且つ、下方揺動側に付勢されて泥面（Ｇ）に接地するよ
うに構成されており、高さセンサー（７）の揺動角を検
出するポテンショメータ（８）が取り付けられている。As shown in FIG. 1, a planting arm (2) is provided at the rear part of the planting mission case (1) and a seedling stand (3) is provided at the upper part of the planting mission case (1) to provide a seedling planting device as a ground working device (4). The seedling planting device (4) is connected to the quadruple link mechanism (5) extended from the machine body (not shown). The four-link mechanism (5) is equipped with a single-acting hydraulic cylinder as an actuator (6) for lifting and lowering the four-link mechanism, and the bottom surface of the planted mission case (1) is separated from the mud surface (6). A sled height sensor (7) for detecting the height up to the seedling planting device (4) is attached. This height sensor (7) can swing freely around the horizontal axis (P 1 ),
In addition, the potentiometer (8) that is configured to be biased to the swinging side to be grounded to the mud surface (G) and to detect the swinging angle of the height sensor (7) is attached.
次に、苗植付装置（４）の昇降について詳述すると第１
図に示すように、操縦部（図示せず）に昇降レバー
（９）が備えられており、昇降レバー（９）を上昇位置
（Ｕ）に操作すると、油圧シリンダ（６）に対する制御
弁（10）が制御装置（11）により作動油供給側に操作さ
れて苗植付装置（４）が上昇操作され、昇降レバー
（９）を下降位置（Ｄ）に操作すると、制御弁（10）が
制御装置（11）により排油側に操作されて苗植付装置
（４）が下降操作される。又、（Ｎ）は中立停止位置で
ある。Next, the lifting and lowering of the seedling planting device (4) will be described in detail.
As shown in the figure, the control unit (not shown) is provided with a lifting lever (9), and when the lifting lever (9) is moved to the raised position (U), the control valve (10) for the hydraulic cylinder (6) is moved. ) Is operated to the hydraulic oil supply side by the control device (11) to raise the seedling planting device (4) and the raising lever (9) is moved to the lower position (D), the control valve (10) is controlled. The device (11) is operated toward the oil draining side to lower the seedling planting device (4). Further, (N) is a neutral stop position.
そして、昇降レバー（９）を植付位置（Ａ）とすると植
付クラッチ（図示せず）が入状態となって苗の植付けが
行われると共に、ポテンショメータ（８）からの信号に
基づいて高さセンサー（７）の揺動角が一定となるよう
に、制御弁（10）により苗植付装置（４）の昇降制御が
行われるのである。When the lifting lever (9) is set to the planting position (A), the planting clutch (not shown) is turned on to plant the seedlings, and the height is set based on the signal from the potentiometer (8). The control valve (10) controls the raising and lowering of the seedling planting device (4) so that the swing angle of the sensor (7) becomes constant.
次に、前後進の切換えと苗植付装置（４）の昇降との関
係について詳述すると第１図に示すように、機体の走行
状態を前進状態と後進状態とに切換える前後進切換装置
（12）が備えられ、これを切換操作する切換レバー（1
3）が操縦部に備えられている。そして第２図に示すよ
うに切換レバー（13）を前進位置（Ｆ）として昇降レバ
ー（９）を植付位置（Ａ）に操作していると、通常の植
付走行が行われる（ステップ（S1），（S2），
（S3））。Next, the relationship between the forward / reverse switching and the raising / lowering of the seedling planting device (4) will be described in detail. As shown in FIG. 1, the forward / reverse switching device for switching the traveling state of the machine body between the forward traveling state and the reverse traveling state ( 12) is provided, and a switching lever (1
3) is provided in the control section. As shown in FIG. 2, when the switching lever (13) is set to the forward position (F) and the elevating lever (9) is operated to the planting position (A), normal planting traveling is performed (step ( S 1 ), (S 2 ),
(S 3 )).
そして、この植付走行中に切換レバー（13）を後進位置
（Ｒ）に操作すると、植付クラッチが切操作されて苗植
付装置（４）が強制的に上昇操作される（ステップ
（S2），（S4））。その後、切換レバー（13）を前進位
置（Ｆ）に戻し操作したとしても、苗植付装置（４）は
持ち上げられた位置で停止している（ステップ（S5），
（S6））。そして、植付位置（Ａ）に在る昇降レバー
（９）を中立停止位置（Ｎ）に戻し操作してからでない
と（ステップ（S5））、苗植付装置（４）の下降及び植
付操作が行えないようにしている（つまり、昇降レバー
（９）を中立停止位置（Ｎ）に戻さないとステップ
（S5）からステップ（S1）に移行できない）。When the switching lever (13) is operated to the reverse position (R) during this planting traveling, the planting clutch is disengaged and the seedling planting device (4) is forcibly lifted (step (S 2 ), (S 4 )). After that, even if the switching lever (13) is returned to the forward position (F), the seedling planting device (4) is stopped at the lifted position (step (S 5 ),
(S 6 )). Then, until the raising / lowering lever (9) at the planting position (A) is returned to the neutral stop position (N) (step (S 5 )), the seedling planting device (4) is lowered and planted. The operation cannot be performed (that is, the lifting lever (9) must be returned to the neutral stop position (N) to move from step (S 5 ) to step (S 1 )).
前述の実施例では切換レバー（13）を後進位置（Ｒ）に
操作してから前進位置（Ｆ）に操作した場合、操縦者が
昇降レバー（９）を中立停止位置（Ｎ）に戻し操作して
からでないと苗植付装置（４）の下降及び植付操作が行
えないように構成したが、これに対して切換レバー（1
3）を後進位置（Ｒ）に操作すると、苗植付装置（４）
が上昇操作されて、その後、昇降レバー（９）が自動的
に中立停止位置（Ｎ）に戻し操作されるように構成して
もよい。In the above-described embodiment, when the switching lever (13) is operated to the reverse position (R) and then to the forward position (F), the operator returns the lift lever (9) to the neutral stop position (N). It was constructed so that the seedling planting device (4) could not be moved down and planting operation only after this.
When 3) is operated to the reverse position (R), the seedling planting device (4)
May be operated to be raised, and thereafter the lifting lever (9) may be automatically returned to the neutral stop position (N).
又、本発明は乗用型田植機ばかりでなく、対地作業装置
としてのロータリ耕耘装置を昇降駆動自在に連結した農
用トラクタにも適用できる。Further, the present invention can be applied not only to a riding type rice transplanter but also to an agricultural tractor to which a rotary tiller as a ground working device is connected so as to be vertically movable.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.
図面は本発明に係る作業車の対地作業装置昇降構造の実
施例を示し、第１図は苗植付装置の側面図、第２図は制
御の流れを示すフローチャートである。 （４）……対地作業装置、（６）……アクチュエータ、
（７）……高さセンサー、（12）……前後進切換装置。1 is a side view of a seedling planting device, and FIG. 2 is a flow chart showing a control flow. (4) …… Ground work device, (6) …… Actuator,
(7) …… Height sensor, (12) …… Forward / reverse switching device.
Claims (1)
ュエータ（６）と、地面から対地作業装置（４）までの
高さを検出する高さセンサー（７）とを備えると共に、
前記高さセンサー（７）の検出高さに基づき対地作業装
置（４）が地面から設定高さを維持するように前記アク
チュエータ（６）を昇降駆動する自動制御手段を備えた
作業車の対地作業装置昇降構造であって、機体の走行状
態を前進状態と後進状態とに亘り切換操作可能な前後進
切換装置（12）を後進側に操作すると、これに連動して
前記対地作業装置（４）を強制的に上昇操作する強制上
昇操作手段と、この強制上昇操作手段の作動後に前記前
後進切換装置（12）の後進操作を解除した際における対
地作業装置（４）の自動下降を阻止する牽制手段とを備
えてある作業車の対地作業装置昇降構造。1. An actuator (6) for vertically moving a ground work device (4), and a height sensor (7) for detecting a height from the ground to the ground work device (4),
Ground work of a work vehicle equipped with automatic control means for raising and lowering the actuator (6) so that the ground work device (4) maintains a set height above the ground based on the height detected by the height sensor (7). When the forward / reverse switching device (12), which has a device elevating structure and is capable of switching the traveling state of the machine body between the forward traveling state and the backward traveling state, is operated to the backward traveling side, the ground working device (4) is interlocked with the operation. And a restraint for preventing automatic lowering of the ground work device (4) when the reverse operation of the forward / reverse switching device (12) is released after the operation of the forced lift operating means. And a ground work device lifting structure for a work vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63262425A JPH07106089B2 (en) | 1988-10-18 | 1988-10-18 | Ground work equipment lifting structure for work vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63262425A JPH07106089B2 (en) | 1988-10-18 | 1988-10-18 | Ground work equipment lifting structure for work vehicles |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29239896A Division JPH09103137A (en) | 1996-11-05 | 1996-11-05 | Elevation structure for transplanting device in sulky mobile farming machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02109901A JPH02109901A (en) | 1990-04-23 |
| JPH07106089B2 true JPH07106089B2 (en) | 1995-11-15 |
Family
ID=17375604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63262425A Expired - Lifetime JPH07106089B2 (en) | 1988-10-18 | 1988-10-18 | Ground work equipment lifting structure for work vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07106089B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04335812A (en) * | 1991-05-14 | 1992-11-24 | Kubota Corp | Rice transplanter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5099136U (en) * | 1974-01-22 | 1975-08-18 | ||
| JPS5633037U (en) * | 1979-08-23 | 1981-04-01 | ||
| JPH0210883Y2 (en) * | 1981-06-20 | 1990-03-19 | ||
| JPS6033815U (en) * | 1983-08-16 | 1985-03-08 | セイレイ工業株式会社 | Agricultural tractor work equipment lifting device |
| JPS6068911U (en) * | 1983-10-20 | 1985-05-16 | セイレイ工業株式会社 | Safety device for rotary tillage equipment |
| JPS62107611U (en) * | 1985-12-26 | 1987-07-09 | ||
| JPS633709A (en) * | 1986-06-24 | 1988-01-08 | ヤンマーディーゼル株式会社 | Plowing depth automatic control apparatus of tractor |
| JPS637701A (en) * | 1986-06-27 | 1988-01-13 | 株式会社クボタ | Agricultural working machine |
| JP2532038Y2 (en) * | 1987-09-18 | 1997-04-09 | ヤンマー農機株式会社 | Interlocking device between main transmission and planting section |
-
1988
- 1988-10-18 JP JP63262425A patent/JPH07106089B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02109901A (en) | 1990-04-23 |
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