JPH0177304U - - Google Patents
Info
- Publication number
- JPH0177304U JPH0177304U JP1987173328U JP17332887U JPH0177304U JP H0177304 U JPH0177304 U JP H0177304U JP 1987173328 U JP1987173328 U JP 1987173328U JP 17332887 U JP17332887 U JP 17332887U JP H0177304 U JPH0177304 U JP H0177304U
- Authority
- JP
- Japan
- Prior art keywords
- lifting
- control
- plowing depth
- oil temperature
- 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.)
- Granted
Links
- 230000003028 elevating effect Effects 0.000 claims 3
- 239000003921 oil Substances 0.000 claims 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Description
第１図は、本考案による対地作業機の昇降速度
制御装置を有するトラクタの全体側面図。第２図
は、同平面図。第３図は、制御装置及び油圧回路
の構成を示すブロツク図。第４図ａ及びｂは、作
業機上下位置と電磁油圧制御弁への制御信号の通
電時間比率との対応を示すグラフ（高温時）。第
５図ａ及びｂは、同グラフ（低温時）。
Ａ：トラクタ、Ｂ：作業機、Ｃ：制御装置、１
９：昇降機構、２４：昇降スイツチ、２７：コン
トローラー、２８：記憶装置、２９：耕深設定器
、３０：電磁油圧制御弁、３６：油圧回路、３７
：油温センサー。
FIG. 1 is an overall side view of a tractor having a lifting speed control device for ground-based work equipment according to the present invention. FIG. 2 is a plan view of the same. FIG. 3 is a block diagram showing the configuration of the control device and hydraulic circuit. FIGS. 4a and 4b are graphs showing the correspondence between the vertical position of the working machine and the energization time ratio of the control signal to the electromagnetic hydraulic control valve (at high temperature). Figures 5a and 5b are the same graphs (at low temperatures). A: Tractor, B: Work equipment, C: Control device, 1
9: Lifting mechanism, 24: Lifting switch, 27: Controller, 28: Storage device, 29: Tillage depth setting device, 30: Electromagnetic hydraulic control valve, 36: Hydraulic circuit, 37
: Oil temperature sensor.
Claims (1)
と、同制御弁３０を手動制御するための昇降スイ
ツチ２４と、昇降機構１９と連結された作業機Ｂ
の耕深設定器２９と、記憶装置２８を有するコン
トローラー２７とを具備して、耕深設定器２９で
設定した耕深を目標として昇降機構１９を自動制
御すると共に、昇降スイツチ２４による昇降機構
１９の手動制御時には、電磁油圧制御弁３０を、
上記目標耕深と作業機上下位置との偏差に対して
段階的に変更させた通電時間比率との対応に従つ
て手動制御すべく構成した作業機の昇降制御装置
において、昇降機構１９の油圧回路３６中に油温
センサー３７を設けると共に、上記偏差と通電時
間比率の対応を数種類設けて、油温センサー３７
が検出した作動油温に応じて上記各対応のいずれ
かを選択可能に構成してなる対地作業機の昇降速
度制御装置。 Lifting mechanism 19 controlled by electromagnetic hydraulic control valve 30
, a lifting switch 24 for manually controlling the control valve 30, and a working machine B connected to the lifting mechanism 19.
A controller 27 having a plowing depth setting device 29 and a storage device 28 is provided to automatically control the elevating mechanism 19 with the plowing depth set by the plowing depth setting device 29 as a target, and to control the elevating mechanism 19 by the elevating switch 24. During manual control, the electrohydraulic control valve 30 is
In the lifting control device for a working machine configured to be manually controlled in accordance with the correspondence with the energization time ratio that is changed in stages with respect to the deviation between the target plowing depth and the vertical position of the working machine, the hydraulic circuit of the lifting mechanism 19 is provided. In addition to providing an oil temperature sensor 37 in the oil temperature sensor 36, several types of correspondence between the above deviation and the energization time ratio are provided.
A lifting/lowering speed control device for a ground-based work machine, which is configured to be able to select one of the above responses depending on the hydraulic oil temperature detected by the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173328U JPH076729Y2 (en) | 1987-11-12 | 1987-11-12 | Lifting speed control device for ground work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173328U JPH076729Y2 (en) | 1987-11-12 | 1987-11-12 | Lifting speed control device for ground work machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0177304U true JPH0177304U (en) | 1989-05-24 |
| JPH076729Y2 JPH076729Y2 (en) | 1995-02-22 |
Family
ID=31465255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987173328U Expired - Lifetime JPH076729Y2 (en) | 1987-11-12 | 1987-11-12 | Lifting speed control device for ground work machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076729Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021132560A (en) * | 2020-02-26 | 2021-09-13 | 株式会社クボタ | Work vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6068912U (en) * | 1983-10-20 | 1985-05-16 | セイレイ工業株式会社 | Depth control device |
| JPS6113005A (en) * | 1984-06-28 | 1986-01-21 | Iseki & Co Ltd | Hydraulic system control device |
-
1987
- 1987-11-12 JP JP1987173328U patent/JPH076729Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6068912U (en) * | 1983-10-20 | 1985-05-16 | セイレイ工業株式会社 | Depth control device |
| JPS6113005A (en) * | 1984-06-28 | 1986-01-21 | Iseki & Co Ltd | Hydraulic system control device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021132560A (en) * | 2020-02-26 | 2021-09-13 | 株式会社クボタ | Work vehicle |
| US11730074B2 (en) | 2020-02-26 | 2023-08-22 | Kubota Corporation | Work vehicle |
| EP3872269B1 (en) * | 2020-02-26 | 2025-11-26 | Kubota Corporation | Work vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH076729Y2 (en) | 1995-02-22 |
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