JPH0397474U - - Google Patents
Info
- Publication number
- JPH0397474U JPH0397474U JP682190U JP682190U JPH0397474U JP H0397474 U JPH0397474 U JP H0397474U JP 682190 U JP682190 U JP 682190U JP 682190 U JP682190 U JP 682190U JP H0397474 U JPH0397474 U JP H0397474U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- discharge amount
- hydraulic pump
- flow rate
- 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
- 238000010276 construction Methods 0.000 claims 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Description
第１図は本考案の実施例にもとづくリフテイン
グマグネツト用発電機の油圧駆動回路図、第２図
は第１図における流量優先弁の作動説明図で、ａ
はポンプ吐出量が、絞り弁のセツト流量より少な
い場合、ｂはポンプ吐出量が増加し、制御流量回
路と非制御流量回路に分流された状態を示す図、
第３図は従来の技術にもとづくリフテイングマグ
ネツト用発電機の油圧駆動回路図である。
１……油圧ポンプ、２……作業機コントロール
バルブ、３……流量優先弁、４……油圧モータ、
５……切換弁、６……リフテイングマグネツト発
電機、７……スイツチ、８……制御ポンプ、９…
…開閉弁、１０……作業機アクチエータ、１１…
…コントローラ、１２……リフテイングマグネツ
ト、Ｂ……絞り弁。
Fig. 1 is a hydraulic drive circuit diagram of a lifting magnet generator based on an embodiment of the present invention, and Fig. 2 is an explanatory diagram of the operation of the flow rate priority valve in Fig. 1.
1 is a diagram showing a state in which the pump discharge amount is smaller than the set flow rate of the throttle valve, and b is a diagram showing a state in which the pump discharge amount increases and is divided into a controlled flow rate circuit and a non-controlled flow rate circuit,
FIG. 3 is a hydraulic drive circuit diagram of a generator for a lifting magnet based on the prior art. 1...Hydraulic pump, 2...Work equipment control valve, 3...Flow rate priority valve, 4...Hydraulic motor,
5...Switching valve, 6...Lifting magnet generator, 7...Switch, 8...Control pump, 9...
...Opening/closing valve, 10... Work equipment actuator, 11...
...controller, 12...lifting magnet, B...throttle valve.
Claims (1)
タに作動油を供給するための油圧ポンプの吐出管
路に流量優先弁を接続し、前記油圧ポンプの吐出
量が所定値以下では前記油圧ポンプの全吐出量を
、また、前記所定値以上では常に一定吐出量を分
流する前記流量優先弁の優先流量ポートを、操作
弁を介して発電機駆動用油圧モータに接続し、ま
た、前記流量優先弁の余剰流量ポートを作業機操
作弁を介して作業機アクチユエータに接続するこ
とを特徴とする建設機械に搭載された発電機の油
圧駆動装置。 A flow rate priority valve is connected to the discharge pipe of a hydraulic pump for supplying hydraulic oil to a hydraulic motor for driving a generator mounted on construction machinery, and when the discharge amount of the hydraulic pump is less than a predetermined value, the hydraulic pump is closed. A priority flow port of the flow rate priority valve, which divides the entire discharge amount and always divides a constant discharge amount above the predetermined value, is connected to a hydraulic motor for driving a generator via an operation valve, and the flow priority valve A hydraulic drive device for a generator mounted on a construction machine, characterized in that a surplus flow port of the machine is connected to a work machine actuator via a work machine operation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP682190U JPH0397474U (en) | 1990-01-26 | 1990-01-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP682190U JPH0397474U (en) | 1990-01-26 | 1990-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0397474U true JPH0397474U (en) | 1991-10-07 |
Family
ID=31510494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP682190U Pending JPH0397474U (en) | 1990-01-26 | 1990-01-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0397474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202343A (en) * | 2007-02-21 | 2008-09-04 | Hitachi Constr Mach Co Ltd | Hydraulic drive unit of construction machine |
| WO2012128091A1 (en) * | 2011-03-24 | 2012-09-27 | カヤバ工業株式会社 | Mixer drum driving device |
-
1990
- 1990-01-26 JP JP682190U patent/JPH0397474U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202343A (en) * | 2007-02-21 | 2008-09-04 | Hitachi Constr Mach Co Ltd | Hydraulic drive unit of construction machine |
| WO2012128091A1 (en) * | 2011-03-24 | 2012-09-27 | カヤバ工業株式会社 | Mixer drum driving device |
| JP2012201143A (en) * | 2011-03-24 | 2012-10-22 | Kyb Co Ltd | Mixer drum driving device |
| US8616758B2 (en) | 2011-03-24 | 2013-12-31 | Kayaba Industry Co., Ltd. | Mixer drum driving device |
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