JPS55151179A - Variable displacement type hydraulic pump - Google Patents

Variable displacement type hydraulic pump

Info

Publication number
JPS55151179A
JPS55151179A JP5951579A JP5951579A JPS55151179A JP S55151179 A JPS55151179 A JP S55151179A JP 5951579 A JP5951579 A JP 5951579A JP 5951579 A JP5951579 A JP 5951579A JP S55151179 A JPS55151179 A JP S55151179A
Authority
JP
Japan
Prior art keywords
servo
pump
hydraulic pump
rotary actuator
acted
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
JP5951579A
Other languages
Japanese (ja)
Inventor
Hiroshi Orishima
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP5951579A priority Critical patent/JPS55151179A/en
Publication of JPS55151179A publication Critical patent/JPS55151179A/en
Pending legal-status Critical Current

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  • Reciprocating Pumps (AREA)

Abstract

PURPOSE: To lower servo pressure, by actuating a rotary actuator interconnected to a valve plate by the difference of servo pressure acted to servo cylinders, and controlling the moment acted to a variable control element in the manner that it is always kept lower than a predetermined value.
CONSTITUTION: In case that the variable displacement type hydraulic pump of this invention is applied in a static hydraulic pressure transmitting system, hydraulic pump P is constituted by mounting pump element 7 in freely rotatable manner on input shaft 5 interconnected to charge pump D. Pistons 8 of the pump element 7 are held in contact with swash plate 12 serving as variable control element by the intermediary of shoes 11. Swash plate 12 is arranged to be capable of swinging around axis 13 within a limited range by means of a paier of servo cylinders 141, 142, which are communicated to displacement control valve 16 associated with actuator 15. Here, valve plate 9 in cap 2 is arranged to be freely rotatable formed rotary actuator 24 integrally therewith, and the rotary actuator 24 is actuated by the difference of servo pressure acted to servo cylinders 141, 142.
COPYRIGHT: (C)1980,JPO&Japio
JP5951579A 1979-05-14 1979-05-14 Variable displacement type hydraulic pump Pending JPS55151179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5951579A JPS55151179A (en) 1979-05-14 1979-05-14 Variable displacement type hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5951579A JPS55151179A (en) 1979-05-14 1979-05-14 Variable displacement type hydraulic pump

Publications (1)

Publication Number Publication Date
JPS55151179A true JPS55151179A (en) 1980-11-25

Family

ID=13115465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5951579A Pending JPS55151179A (en) 1979-05-14 1979-05-14 Variable displacement type hydraulic pump

Country Status (1)

Country Link
JP (1) JPS55151179A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314784A (en) * 2014-10-23 2015-01-28 宁波广天赛克思液压有限公司 Power control mechanism integrated in housing of hydraulic pump
CN104533743A (en) * 2014-12-30 2015-04-22 南京萨伯工业设计研究院有限公司 Hydraulic pump bilateral pressure-bearing servo variable device and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314784A (en) * 2014-10-23 2015-01-28 宁波广天赛克思液压有限公司 Power control mechanism integrated in housing of hydraulic pump
CN104533743A (en) * 2014-12-30 2015-04-22 南京萨伯工业设计研究院有限公司 Hydraulic pump bilateral pressure-bearing servo variable device and control method thereof

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