JPS58127204U - Actuator drive circuit - Google Patents
Actuator drive circuitInfo
- Publication number
- JPS58127204U JPS58127204U JP2439882U JP2439882U JPS58127204U JP S58127204 U JPS58127204 U JP S58127204U JP 2439882 U JP2439882 U JP 2439882U JP 2439882 U JP2439882 U JP 2439882U JP S58127204 U JPS58127204 U JP S58127204U
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- circuit
- actuator
- pump
- discharge side
- 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
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
第１図は従来のアクチュエータ駆動回路の１例を示す油
圧回路図、第２図はこの考案の１実施例を示す油圧回路
図である。
１１・・・第１ポンプ、１２・・・第２ポンプ、２１・
・・第１切換弁、２２・・・第２切換弁、３１・・・第
１アクチユエータ、３２・・・第２アクチユエータ、１
５・・・アンロード回路、′１６・・・第１供給回路、
１７・・・第２供給回路、１８・・・合流回路、１９・
・・圧力補償回路、４０・・・タンク、５７・・・圧力
補償弁、５９・・・パイロット部、６０・・・高圧選択
弁。FIG. 1 is a hydraulic circuit diagram showing an example of a conventional actuator drive circuit, and FIG. 2 is a hydraulic circuit diagram showing an embodiment of this invention. 11...First pump, 12...Second pump, 21.
...first switching valve, 22...second switching valve, 31...first actuator, 32...second actuator, 1
5... Unload circuit, '16... First supply circuit,
17... Second supply circuit, 18... Merging circuit, 19...
...Pressure compensation circuit, 40...Tank, 57...Pressure compensation valve, 59...Pilot section, 60...High pressure selection valve.
Claims (1)
１切換弁と；第２アクチユエータが接続する第２切換弁
と；前記第２ポンプの吐出側を、前記第１、第２切換弁
が中立位置にある時タンクに接続させるアンロード回路
と；前記第１ポンプの吐出側を、前記第１切換弁が中立
位置にある時前記アンロード回路に接続させる第１供給
回路と；前記第１切換弁と第２切換弁との間のアンロー
ド回路から分岐し第２切換弁が中立位置にある時閉鎖さ
れる第２供給回路と；前記第２ポンプの吐出側と第１ポ
ンプの吐出側とを、第１ポンプの吐出側を順方向とする
逆止弁を介して接続する合流回路と；前記第１ポンプの
吐出側とタンクとの間に設けられ、前記第１及び第２ア
クチユエータの高圧側が高圧選択弁を介して接続するパ
イロット部を有した圧力補償弁を備えた圧力補償回路と
；からなり、前記第１切換弁は、前記第１供給回路と第
１アクチユエータとの間に絞りを形成するとともに前記
アンロード通路を連通ずる第１切換位置と、前記第１供
給回路と第１アクチユエータとを接続するとともに前記
アンロード回路を閉鎖する第２切換位置とを有し、前記
第２切換弁は、前記第？供給回路と第２アクチユエータ
とを接続するとともに前記アンロード回路を閉鎖する切
換位置を有したアクチュエータの駆動回路。a first switching valve connected to a first actuator; a second switching valve connected to a second actuator; a discharge side of the second pump connected to the first switching valve and a second switching valve connected to the first actuator; an unload circuit connected to the tank when the first switching valve is in the neutral position; a first supply circuit that connects the discharge side of the first pump to the unload circuit when the first switching valve is in the neutral position; a second supply circuit that branches from the unload circuit between the switching valve and the second switching valve and is closed when the second switching valve is in the neutral position; a discharge side of the second pump and a discharge side of the first pump; and a confluence circuit connecting the first and second actuators via a check valve with the discharge side of the first pump as the forward direction; a pressure compensation circuit including a pressure compensation valve having a pilot portion connected to the high pressure side via a high pressure selection valve; and a second switching position connecting the first supply circuit and the first actuator and closing the unloading circuit; Is the switching valve the same as above? An actuator drive circuit having a switching position connecting the supply circuit and the second actuator and closing the unload circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2439882U JPS58127204U (en) | 1982-02-22 | 1982-02-22 | Actuator drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2439882U JPS58127204U (en) | 1982-02-22 | 1982-02-22 | Actuator drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58127204U true JPS58127204U (en) | 1983-08-29 |
Family
ID=30036401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2439882U Pending JPS58127204U (en) | 1982-02-22 | 1982-02-22 | Actuator drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58127204U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825468B1 (en) * | 1968-01-10 | 1973-07-28 | ||
| JPS55135205A (en) * | 1979-04-06 | 1980-10-21 | Tadano Tekkosho:Kk | Driving device for hydraulic actuator |
-
1982
- 1982-02-22 JP JP2439882U patent/JPS58127204U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825468B1 (en) * | 1968-01-10 | 1973-07-28 | ||
| JPS55135205A (en) * | 1979-04-06 | 1980-10-21 | Tadano Tekkosho:Kk | Driving device for hydraulic actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58127204U (en) | Actuator drive circuit | |
| JPH01156255U (en) | ||
| JPS59102666U (en) | Hydraulic circuit for work equipment | |
| JPS5820705U (en) | counterbalance valve | |
| JPS5818104U (en) | Multiple directional valve | |
| JPS6034104U (en) | Dual pressure relief valve circuit | |
| JPS6111693U (en) | Hydraulic circuit of hoist | |
| JPS5947106U (en) | Hydraulic circuit of single acting hydraulic cylinder | |
| JPS595599U (en) | Control circuit for clamper for forklift truck | |
| JPS58123903U (en) | hydraulic control circuit | |
| JPS6123510U (en) | Leak prevention device in series circuit | |
| JPS5961198U (en) | Hydraulic circuit in cargo handling vehicle | |
| JPS60127102U (en) | Structure of hydraulic control valve | |
| JPS6087268U (en) | Swing hydraulic circuit for rotating body | |
| JPS59183562U (en) | Hydraulic closed circuit control device | |
| JPS6060331U (en) | Drive device in lifting equipment | |
| JPS60141222U (en) | Hydraulic power source device for injection molding machine | |
| JPS60135364U (en) | Hydraulic excavator hydraulic circuit | |
| JPS59177803U (en) | Hydraulic supply control device | |
| JPS59102667U (en) | Hydraulic circuit for work equipment | |
| JPS5899137U (en) | Dump truck operation control device | |
| JPS6086603U (en) | Accumulator pressure accumulation circuit | |
| JPS5976661U (en) | Backhoe boom drive structure | |
| JPS59142553U (en) | hydraulic closed circuit | |
| JPS6123503U (en) | Compression actuation circuit device |