JPH01168111U - - Google Patents
Info
- Publication number
- JPH01168111U JPH01168111U JP6692788U JP6692788U JPH01168111U JP H01168111 U JPH01168111 U JP H01168111U JP 6692788 U JP6692788 U JP 6692788U JP 6692788 U JP6692788 U JP 6692788U JP H01168111 U JPH01168111 U JP H01168111U
- Authority
- JP
- Japan
- Prior art keywords
- elevation
- control valve
- setting dial
- control device
- controller
- 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 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Description
第１図はトラクター後部側面図。第２図は制御
バルブをソレノイドにより切り換える場合の制御
ブロツク図。第３図は耕深設定ダイヤルの回動量
とその出力信号との関係を示す図。第４図は感度
モードを示す図である。
６……耕深設定ダイヤル、２０……コントロー
ラー、２１……制御バルブ、２５……モード切換
回路。
Figure 1 is a rear side view of the tractor. Figure 2 is a control block diagram when the control valve is switched by a solenoid. FIG. 3 is a diagram showing the relationship between the amount of rotation of the plowing depth setting dial and its output signal. FIG. 4 is a diagram showing the sensitivity mode. 6... Cultivation depth setting dial, 20... Controller, 21... Control valve, 25... Mode switching circuit.
Claims (1)
油圧昇降制御装置において、耕深設定ダイヤルの
設定値に対してリヤカバー１６の耕耘深さ検出信
号との差を零とするように、制御バルブをコント
ローラーにて制御したものにおいて、耕深設定ダ
イヤルにて耕耘深さを浅耕から深耕へ設定調整す
るに従つて、コントローラーが制御バルブを駆動
する際の中立ゾーンを狭く、かつ、デユーテイ比
を大きくするよう連動したことを特徴とするトラ
クターの作業機昇降制御装置。 In a hydraulic elevation control device that controls the elevation of a working machine attached to a tractor, a control valve is set in a controller so that the difference between a plowing depth detection signal of a rear cover 16 and a set value of a plowing depth setting dial is zero. As the tillage depth is adjusted from shallow to deep with the tillage depth setting dial, the controller narrows the neutral zone when driving the control valve and increases the duty ratio. A tractor work equipment elevation control device characterized by interlocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6692788U JPH01168111U (en) | 1988-05-20 | 1988-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6692788U JPH01168111U (en) | 1988-05-20 | 1988-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01168111U true JPH01168111U (en) | 1989-11-27 |
Family
ID=31292316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6692788U Pending JPH01168111U (en) | 1988-05-20 | 1988-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01168111U (en) |
-
1988
- 1988-05-20 JP JP6692788U patent/JPH01168111U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01168111U (en) | ||
| JPS6183805U (en) | ||
| JPH0249809U (en) | ||
| JPS6310825U (en) | ||
| JPS62144410U (en) | ||
| JPS6350504U (en) | ||
| JPS62193805U (en) | ||
| JPS61136809U (en) | ||
| JPS61125208U (en) | ||
| JPH0236910U (en) | ||
| JPS6318006U (en) | ||
| JPS61136811U (en) | ||
| JPS6183804U (en) | ||
| JPH0236911U (en) | ||
| JPH0348405U (en) | ||
| JPS6068913U (en) | Depth control device | |
| JPH0244912U (en) | ||
| JPS6315715U (en) | ||
| JPS6315713U (en) | ||
| JPS61136810U (en) | ||
| JPS61182211U (en) | ||
| JPS632413U (en) | ||
| JPH0331807U (en) | ||
| JPH0236908U (en) | ||
| JPS59113010U (en) | Angle control device for work equipment |