JPH0318265U - - Google Patents
Info
- Publication number
- JPH0318265U JPH0318265U JP7806889U JP7806889U JPH0318265U JP H0318265 U JPH0318265 U JP H0318265U JP 7806889 U JP7806889 U JP 7806889U JP 7806889 U JP7806889 U JP 7806889U JP H0318265 U JPH0318265 U JP H0318265U
- Authority
- JP
- Japan
- Prior art keywords
- main switching
- switching valve
- pilot
- solenoid valve
- valve
- 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
- 238000011017 operating method Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案にかかる操作装置を示す回路
図、第２図は油圧シヨベルの側面図、第３図は運
転室の内部付近を示す斜視図、第４図は従来技術
操作装置を示す回路図である。
６，７，８，９……油圧アクチユエータ、１３
，１４……作業用操作レバー、１６……主切替弁
、１８，１９，４５，４６……電磁弁、２３，〜
，２８……制御弁、３１，〜，３８……パイロツ
ト弁、５３……電気回路、５４……リミツトスイ
ツチ、５５……操作スイツチ。
Fig. 1 is a circuit diagram showing the operating device according to this invention, Fig. 2 is a side view of the hydraulic excavator, Fig. 3 is a perspective view showing the inside of the operator's cab, and Fig. 4 is a circuit showing the conventional operating device. It is a diagram. 6, 7, 8, 9...hydraulic actuator, 13
, 14... Working operation lever, 16... Main switching valve, 18, 19, 45, 46... Solenoid valve, 23, ~
, 28... Control valve, 31, -, 38... Pilot valve, 53... Electric circuit, 54... Limit switch, 55... Operation switch.
Claims (1)
動を制御する所要数のパイロツト式制御弁と、こ
れら各制御弁のパイロツトポートに対応する所要
数のパイロツト弁と、これらのパイロツト弁を操
作する複数の操作レバーと、上記各制御弁のパイ
ロツトポートと各パイロツト弁とを接続する１個
の操作方式主切替弁をそなえ、その主切替弁の各
ポジシヨンのうちのいずれかポジシヨンに対して
、そのポジシヨンの一部の入力ポートと出力ポー
トとの接続関係を変換するために通路変換用電磁
弁を上記主切替弁に接続して設け、主切替弁の一
部の出力ポートと電磁弁の入力ポートとをそれぞ
れ別個に連結し、主切替弁を所要のポジシヨンに
切替操作してさらに電磁弁を切替操作したとき主
切替弁による操作方式にもとづきさらに別の操作
方式を設定できるようにした操作装置において、
上記主切替弁にリミツトスイツチを設けるととも
に、主切替弁を所要のポジシヨンにかつ電磁弁を
所要の位置に切替えた操作時に、電磁弁用電気回
路が非通電となつたとき上記電磁弁を遮断油路位
置に戻すように構成したことを特徴とする建設機
械の操作装置。 A required number of pilot control valves for controlling the operation of various hydraulic actuators in construction machinery, a required number of pilot valves corresponding to the pilot ports of each of these control valves, and a plurality of operating levers for operating these pilot valves; A main switching valve with an operating method is provided that connects the pilot port of each of the above control valves and each pilot valve, and for any one of the positions of the main switching valve, a part of that position can be input. In order to change the connection relationship between ports and output ports, a solenoid valve for passage conversion is connected to the above main switching valve, and some of the output ports of the main switching valve and the input port of the solenoid valve are connected separately. In the operating device, when the main switching valve is switched to a required position and the solenoid valve is further switched, another operating method can be set based on the operating method by the main switching valve,
A limit switch is provided on the main switching valve, and when the main switching valve is switched to the required position and the solenoid valve is switched to the required position, when the electrical circuit for the solenoid valve becomes de-energized, the solenoid valve is shut off. An operating device for construction machinery, characterized in that it is configured to be returned to its original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7806889U JPH0730771Y2 (en) | 1989-06-30 | 1989-06-30 | Operating equipment for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7806889U JPH0730771Y2 (en) | 1989-06-30 | 1989-06-30 | Operating equipment for construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0318265U true JPH0318265U (en) | 1991-02-22 |
| JPH0730771Y2 JPH0730771Y2 (en) | 1995-07-19 |
Family
ID=31621019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7806889U Expired - Lifetime JPH0730771Y2 (en) | 1989-06-30 | 1989-06-30 | Operating equipment for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730771Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231884A (en) * | 2010-04-28 | 2011-11-17 | Hitachi Constr Mach Co Ltd | Control device of hydraulic working machine |
-
1989
- 1989-06-30 JP JP7806889U patent/JPH0730771Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231884A (en) * | 2010-04-28 | 2011-11-17 | Hitachi Constr Mach Co Ltd | Control device of hydraulic working machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730771Y2 (en) | 1995-07-19 |
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