JPS637704A - Working machine raising and lowering apparatus of tractor - Google Patents
Working machine raising and lowering apparatus of tractorInfo
- Publication number
- JPS637704A JPS637704A JP15220286A JP15220286A JPS637704A JP S637704 A JPS637704 A JP S637704A JP 15220286 A JP15220286 A JP 15220286A JP 15220286 A JP15220286 A JP 15220286A JP S637704 A JPS637704 A JP S637704A
- Authority
- JP
- Japan
- Prior art keywords
- lift arm
- sensor
- hydraulic cylinder
- tractor
- working machine
- 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.)
- Pending
Links
- 238000003971 tillage Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は農用トラクターに後部に付設する作業機を昇降
する装置において、作業機の昇降を強制的に駆動できる
ようにし、常に設定深さに制御するための構成に関する
ものである。Detailed Description of the Invention (a) Industrial Application Field The present invention provides a device for lifting and lowering a working implement attached to the rear of an agricultural tractor, which enables the lifting and lowering of the working implement to be forcibly driven, and always maintains a set depth. The present invention relates to a configuration for controlling.
(ロ)従来技術
従来からロータリー耕耘装置等の作業機の昇降は単動式
の油圧シリンダーにて行われ、上昇時には油圧シリンダ
ーに送油して伸長させ、下降時には送油を止めて作業機
の自重にて下降させていたのである。また、耕深を一定
に保つための耕深制御は、ロータリー耕耘装置後端に付
設したりャカバーの回動角を電気的或いは機械的にフィ
ードバックして耕深が深くなれば上昇させ、浅くなれば
下降させて、耕深を一定深さに保つように構成していた
のである。(B) Prior art Conventionally, working machines such as rotary tillers have been lifted and lowered using single-acting hydraulic cylinders.When going up, oil is sent to the hydraulic cylinder to extend the work equipment, and when going down, the oil supply is stopped to raise and lower the work equipment. It was being lowered by its own weight. In addition, tillage depth control to maintain a constant tillage depth is achieved by electrically or mechanically feeding back the rotation angle of the tiller cover attached to the rear end of the rotary tiller to raise it when the tillage depth becomes deeper and raise it when it becomes shallower. The plowing depth was maintained at a constant depth by lowering the plowing depth.
(ハ)発明が解決しようとする問題点
しかし上記のような構成において、畦の直交方向の切り
崩しや枕地での耕耘作業等においては、凹凸が多く、耕
盤が硬軟変化も多いため第4図の如く耕深が一定しない
のである。つまり、ロータリー耕耘装置の重量で下降さ
せる方法では、凹凸の変化に応じて下降が遅れたり、耕
盤が硬くてくい込みが少なかったりして、耕深の深い部
分(alと耕深の浅い部分(blが生じていたのである
。(c) Problems to be solved by the invention However, in the above-mentioned configuration, when cutting in the orthogonal direction of ridges or tilling work on headlands, there are many unevenness and the plowing plate often changes in hardness and softness. As shown in the figure, the plowing depth is not constant. In other words, with the method of lowering the rotary tiller using its weight, the lowering may be delayed depending on changes in unevenness, or the tiller may be hard and not penetrate into the tiller well, resulting in problems in deep tillage areas (al and shallow tillage areas). bl had occurred.
(ニ)問題を解決するための手段
本発明はこのような点に鑑み、次の如く構成したもので
ある。(d) Means for solving the problem In view of the above points, the present invention is constructed as follows.
作業機昇降装置におけるリフトアーム(11)回動基部
にセンサー(16)を設け、該リフトアーム(11)を
回動させる油圧シリンダーを複動式の油圧シリンダー(
10)とすると共に、後輪車軸(5a)近傍に前後方向
の傾斜を検知するセンサー(15)を設け、該センサー
(15) (16)の信号により制御バルブ(21)を
切り換えて作業機を一定温さにすべくリフトアーム(1
1)を強制駆動したものである。A sensor (16) is provided at the rotation base of the lift arm (11) in the work equipment lifting device, and the hydraulic cylinder that rotates the lift arm (11) is replaced by a double-acting hydraulic cylinder (
10), and a sensor (15) for detecting inclination in the longitudinal direction is provided near the rear wheel axle (5a), and the control valve (21) is switched based on the signals from the sensor (15) and (16) to operate the work machine. Lift arm (1) to maintain constant temperature
1) is forcibly driven.
(ホ)実施例
本発明の目的は以上の如くであり、添付の図面に示した
実施例の構成に基づいて本発明の詳細な説明すると。(E) Embodiments The objects of the present invention are as described above, and the present invention will be explained in detail based on the configuration of the embodiments shown in the accompanying drawings.
第1図は本発明の昇降装置を付設した農用トラクター側
面図。第2図は同じく凹凸のある圃場作業時の農用トラ
クター側面図。第3図は油圧回路図及び電気制御のブロ
ック図である。FIG. 1 is a side view of an agricultural tractor equipped with the lifting device of the present invention. Figure 2 is a side view of an agricultural tractor when working in a field with uneven surfaces. FIG. 3 is a hydraulic circuit diagram and a block diagram of electrical control.
第1図、第2図における農用トラクター(T)において
、(3)は座席、(4)は前輪、(5)は後輪である。In the agricultural tractor (T) shown in FIGS. 1 and 2, (3) is a seat, (4) is a front wheel, and (5) is a rear wheel.
座席(3)下部のミッションケース(1)下後部にロア
リンク(6)、後面にトップリンクヒンジ(8)を介し
てトップリンク(7)を枢結し、該ロアリンク(6)、
トップリンク(7)後端に作業機としてロータリー耕耘
装置(R)を装着している。ミッションケース(1)上
部には油圧シリンダー(10)及びリフトアーム(11
)を枢支し、リフトアーム(11)の回動軸にはアーム
(12)が固設され、該アーム(12)端部に油圧シリ
ンダー(10)のピストンロッドを枢支している。また
、リフトアーム(11)先端にはリフトリンク(9)を
枢支し、リフトリンク(9)他端をロアリンク(6)の
中途部に枢支している。よって、リフトアーム(11)
を回動ずればd−タリー耕耘装置(R)が昇降されるの
である。A lower link (6) is pivotally connected to the lower rear part of the mission case (1) at the bottom of the seat (3), and a top link (7) is pivotally connected to the rear surface via a top link hinge (8).
A rotary tiller (R) is attached to the rear end of the top link (7) as a working machine. At the top of the mission case (1) are a hydraulic cylinder (10) and a lift arm (11).
), and an arm (12) is fixed to the rotation axis of the lift arm (11), and a piston rod of a hydraulic cylinder (10) is pivotally supported at the end of the arm (12). Further, a lift link (9) is pivotally supported at the tip of the lift arm (11), and the other end of the lift link (9) is pivotally supported in the middle of the lower link (6). Therefore, lift arm (11)
By rotating the d-tally tiller (R), the d-tally tilling device (R) is raised and lowered.
前記油圧シリンダー(10)は複動式であり、第1図の
如く油圧シリンダー(10)を枢支しても、第3図の如
く油圧シリンダー(10)を固定して、アーム(12)
に長孔(12a)を穿設して、該長孔(12a)にピス
トンロッドを枢支しても構わない。また、後輪の車軸(
5a)は前後方向の作業機を含めた本機揺動中心となる
ので、後輪車軸(5a)近傍に水平に対する前後方向の
傾斜角を検出するセンサー(15)を設け、リフトアー
ム(11)基部にもリフトアーム(11)の回動角を検
出するセンサー(16)を設けている。The hydraulic cylinder (10) is a double-acting type, and even if the hydraulic cylinder (10) is pivoted as shown in Fig. 1, the hydraulic cylinder (10) is fixed as shown in Fig. 3, and the arm (12)
An elongated hole (12a) may be formed in the elongated hole (12a), and the piston rod may be pivotally supported in the elongated hole (12a). Also, the rear axle (
5a) is the center of swing of the machine including the work equipment in the longitudinal direction, so a sensor (15) is installed near the rear wheel axle (5a) to detect the angle of inclination in the longitudinal direction with respect to the horizontal direction, and the lift arm (11) A sensor (16) for detecting the rotation angle of the lift arm (11) is also provided at the base.
また、ロータリー耕耘装置(R)の高さ又は耕深を設定
するポジションレバー(19)の基部にも回動角を検知
するセンサー(17)が設けられている。上記センサー
(15) (16) (17)からの信号はコントロー
ラ(20)に入力され、該コントローラ(20)にて制
御バルブ(21)を切り換え高さ、耕深等を制御するの
である。(22) (23)は可変絞りであり、昇降時
の急激な変化を避け、衝撃を緩和している。Further, a sensor (17) for detecting the rotation angle is also provided at the base of the position lever (19) for setting the height or plowing depth of the rotary tillage device (R). Signals from the sensors (15), (16), and (17) are input to the controller (20), which switches the control valve (21) to control the height, plowing depth, etc. (22) and (23) are variable apertures, which avoid sudden changes when going up and down and reduce shock.
(へ)発明の作用
このような構成において、第1図の如く水平状態での耕
耘作業時にポジションレバー(19)を任意位置に設定
すると、センサー(17)の信号によりコントローラ(
20)を介して制御バルブ(21)を切り換えて、リフ
トアーム(11)を回動して機体平行線lより01下降
させるのである。このときセンサー(16)はフィード
バック信号を出力している。そして、第2図のように機
体が水平線りよりθ3傾斜すると、その角度をセンサー
(15)が検知して、コントローラ(20)に入力し演
算されて、ロータリー耕耘装置(R)が設定深さになる
ように制御バルブ(21)を切り換えるのである。即ち
、機体前方が上昇すれば後方のロータリー耕耘装置(R
)は下げられることになるから、その分ロータリー耕耘
装置(R)を上昇させなければならないから、制御バル
ブ(21)を切り換えて油圧シリンダー(10)を伸長
させてリフトアーム(11)を適正深さになるθ2なる
まで上昇させるのである。逆に、前方が下方に傾けばロ
ータリー耕耘装置(R)を下げるように制御バルブ(2
1)を切り換えるのである。(F) Function of the Invention In such a configuration, when the position lever (19) is set to an arbitrary position during tilling work in a horizontal state as shown in Fig. 1, the controller (
20), the control valve (21) is switched, and the lift arm (11) is rotated to lower the aircraft 01 from the parallel line l. At this time, the sensor (16) is outputting a feedback signal. Then, as shown in Figure 2, when the machine tilts by θ3 from the horizontal, the sensor (15) detects the angle, inputs it to the controller (20) and calculates it, and the rotary tiller (R) adjusts the angle to the set depth. The control valve (21) is switched so that In other words, if the front of the aircraft rises, the rear rotary tiller (R
) will be lowered, so the rotary tiller (R) must be raised accordingly, so the control valve (21) is switched to extend the hydraulic cylinder (10) and the lift arm (11) is moved to the appropriate depth. It is raised until it reaches θ2. On the other hand, if the front side tilts downward, the control valve (2) will lower the rotary tiller (R).
1).
(ト)発明の効果
本発明は以上のような構成により次のような効果が得ら
れるのである。(G) Effects of the Invention The present invention achieves the following effects by virtue of the above-described configuration.
第1に、ロータリー耕耘装置の昇降を強制的に駆動でき
るようになったので、圃場の凹凸に対してロータリー耕
耘装置を速やかに昇降して追随できるようになり、耕盤
を一定温さにできるようになっだのである。First, it is now possible to forcibly drive the rotary tiller up and down, so the rotary tiller can quickly move up and down to follow irregularities in the field, and the tiller can be kept at a constant temperature. That's how it happened.
第2に、本機側にセンサーを設けて耕深を制御できるの
で、プラウ等他の作業機の耕深も制御できるようになっ
たのである。Second, since the plowing depth can be controlled by installing a sensor on the machine side, it has become possible to control the plowing depth of other working machines such as plows.
第3に、リフトアームを強制的に下降させるので、下降
速度制御が可能となり、最上昇位置へ持ち上げて止めた
時のショックやくい込み初期の衝撃等も緩和できるので
ある。Thirdly, since the lift arm is forcibly lowered, it is possible to control the speed of descent, and the shock when lifting and stopping at the highest position and the shock at the initial stage of digging can be alleviated.
第4に、作業機の重量によらず下降できるので、作業機
の重量の軽量化も図れるのである。Fourthly, since the work machine can be lowered regardless of its weight, the weight of the work machine can be reduced.
第1図は本発明の昇降装置を付設した農用トラクター側
面図。第2図は同じく凹凸のある圃場作業時の農用トラ
クター側面図。第3図は油圧回路図及び電気制御のブロ
ック図。第4図は従来の耕深制御を示すトラクター側面
図である。
T・・・トラクター
R・・・ロータリー耕耘装置
5a・・・後輪車軸
10・・・油圧シリンダー
11・・・リフトアーム
15・16・・・センサー
21・・・制御バルブFIG. 1 is a side view of an agricultural tractor equipped with the lifting device of the present invention. Figure 2 is a side view of an agricultural tractor when working in a field with uneven surfaces. Figure 3 is a hydraulic circuit diagram and a block diagram of electrical control. FIG. 4 is a side view of a tractor showing conventional plowing depth control. T...Tractor R...Rotary tillage device 5a...Rear wheel axle 10...Hydraulic cylinder 11...Lift arms 15, 16...Sensor 21...Control valve
Claims (1)
にセンサー(16)を設け、該リフトアーム(11)を
回動させる油圧シリンダーを複動式の油圧シリンダー(
10)とすると共に、後輪車軸(5a)近傍に前後方向
の傾斜を検知するセンサー(15)を設け、該センサー
(15)(16)の信号により制御バルブ(21)を切
り換えて作業機を一定深さにすべくリフトアーム(11
)を強制駆動したことを特徴とするトラクターの作業機
昇降装置。A sensor (16) is provided at the rotation base of the lift arm (11) in the work equipment lifting device, and the hydraulic cylinder that rotates the lift arm (11) is replaced by a double-acting hydraulic cylinder (
10), and a sensor (15) for detecting inclination in the longitudinal direction is provided near the rear wheel axle (5a), and the control valve (21) is switched based on the signals from the sensor (15) and (16) to operate the work machine. Lift arm (11
) is a forcibly driven tractor work equipment lifting device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15220286A JPS637704A (en) | 1986-06-27 | 1986-06-27 | Working machine raising and lowering apparatus of tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15220286A JPS637704A (en) | 1986-06-27 | 1986-06-27 | Working machine raising and lowering apparatus of tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS637704A true JPS637704A (en) | 1988-01-13 |
Family
ID=15535291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15220286A Pending JPS637704A (en) | 1986-06-27 | 1986-06-27 | Working machine raising and lowering apparatus of tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS637704A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6314606A (en) * | 1986-07-04 | 1988-01-21 | 株式会社 東洋社 | Method and apparatus for controlling pitching of tractor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55148001A (en) * | 1979-05-07 | 1980-11-18 | Kubota Ltd | Soil treating working machine with automatic lifting control mechanism |
JPS5820102A (en) * | 1981-07-24 | 1983-02-05 | 株式会社クボタ | Earth working vehicle |
-
1986
- 1986-06-27 JP JP15220286A patent/JPS637704A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55148001A (en) * | 1979-05-07 | 1980-11-18 | Kubota Ltd | Soil treating working machine with automatic lifting control mechanism |
JPS5820102A (en) * | 1981-07-24 | 1983-02-05 | 株式会社クボタ | Earth working vehicle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6314606A (en) * | 1986-07-04 | 1988-01-21 | 株式会社 東洋社 | Method and apparatus for controlling pitching of tractor |
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