JPS5543270A - Hydraulic piston pump - Google Patents

Hydraulic piston pump

Info

Publication number
JPS5543270A
JPS5543270A JP11702078A JP11702078A JPS5543270A JP S5543270 A JPS5543270 A JP S5543270A JP 11702078 A JP11702078 A JP 11702078A JP 11702078 A JP11702078 A JP 11702078A JP S5543270 A JPS5543270 A JP S5543270A
Authority
JP
Japan
Prior art keywords
cylinders
discharge
suction
driving
pump
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
Application number
JP11702078A
Other languages
Japanese (ja)
Inventor
Misae Izaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP11702078A priority Critical patent/JPS5543270A/en
Publication of JPS5543270A publication Critical patent/JPS5543270A/en
Pending legal-status Critical Current

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  • Reciprocating Pumps (AREA)

Abstract

PURPOSE: To simplify the driving liquid pressure circuit and improve its response to the change in running conditions, by providing the pump with main cylinders for driving a piston, cylinders for driving suction and discharge valve, solenoid valves, pulse generator for oil pressure pump and control unit.
CONSTITUTION: Objects to be transferred are pressure-fed through suction ports 12, 13, discharge ports 14, 15 and Y branch 18. The amount of discharge of a hydraulic pump 30 is checked by a pulse generator 41, and a control unit 42 controls solenoid valves 31, 32 for main cylinders 3, 4, suction valve driving cylinders 5a, 5b and discharge valve driving cylinders 6a, 6b according to the pulse. The timing of controlling the suction and discharge valves is easily and freely changeable by changing the pulse number. This system can improve the response to the change in the running conditions and reduce the noise.
COPYRIGHT: (C)1980,JPO&Japio
JP11702078A 1978-09-22 1978-09-22 Hydraulic piston pump Pending JPS5543270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11702078A JPS5543270A (en) 1978-09-22 1978-09-22 Hydraulic piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11702078A JPS5543270A (en) 1978-09-22 1978-09-22 Hydraulic piston pump

Publications (1)

Publication Number Publication Date
JPS5543270A true JPS5543270A (en) 1980-03-27

Family

ID=14701448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11702078A Pending JPS5543270A (en) 1978-09-22 1978-09-22 Hydraulic piston pump

Country Status (1)

Country Link
JP (1) JPS5543270A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321014A (en) * 1979-12-31 1982-03-23 Polaroid Corporation Constant flow pumping apparatus
JPS57194592A (en) * 1981-05-26 1982-11-30 Ando Electric Device for machining printed board
JPS5835680U (en) * 1981-09-01 1983-03-08 佐々木　功 Gate valve structure in concrete pump
JP2009197798A (en) * 2008-02-19 2009-09-03 Waertsilae Schweiz Ag Device for lubricating cylinder
CN102536725A (en) * 2011-11-07 2012-07-04 北京市三一重机有限公司 Pumping system, control method thereof, and fire fighting equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956086A (en) * 1972-09-29 1974-05-30
JPS5213609U (en) * 1975-07-17 1977-01-31

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956086A (en) * 1972-09-29 1974-05-30
JPS5213609U (en) * 1975-07-17 1977-01-31

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321014A (en) * 1979-12-31 1982-03-23 Polaroid Corporation Constant flow pumping apparatus
JPS57194592A (en) * 1981-05-26 1982-11-30 Ando Electric Device for machining printed board
JPS5835680U (en) * 1981-09-01 1983-03-08 佐々木　功 Gate valve structure in concrete pump
JP2009197798A (en) * 2008-02-19 2009-09-03 Waertsilae Schweiz Ag Device for lubricating cylinder
CN102536725A (en) * 2011-11-07 2012-07-04 北京市三一重机有限公司 Pumping system, control method thereof, and fire fighting equipment

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