JPS5455802A - Oil pressure drive type variabel speed underwater pump - Google Patents

Oil pressure drive type variabel speed underwater pump

Info

Publication number
JPS5455802A
JPS5455802A JP11553478A JP11553478A JPS5455802A JP S5455802 A JPS5455802 A JP S5455802A JP 11553478 A JP11553478 A JP 11553478A JP 11553478 A JP11553478 A JP 11553478A JP S5455802 A JPS5455802 A JP S5455802A
Authority
JP
Japan
Prior art keywords
pump
oil pressure
oil
servo
conduit
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
Application number
JP11553478A
Other languages
Japanese (ja)
Other versions
JPS5641838B2 (en
Inventor
Nobuyoshi Nishiyama
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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry 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 Shin Meiva Industry Ltd filed Critical Shin Meiva Industry Ltd
Priority to JP11553478A priority Critical patent/JPS5455802A/en
Publication of JPS5455802A publication Critical patent/JPS5455802A/en
Publication of JPS5641838B2 publication Critical patent/JPS5641838B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

PURPOSE: To ensure low cost and high efficiency, by turning an oil pump for supplementing a circulation closed circuit by means of an oil pressure motor shaft, and by arranging an oil pressure pump control circuit by connecting a pressure accumulator to a conduit to a servo-valve from a conduit at the low pressure side.
CONSTITUTION: When a prime mover 2 is driven to turn an oil pressure pump 1 and a power source of a torque motor 21 is switched ON to apply a fixed input. a servo-valve 18 is operated, the compressed oil of a pressure accumulator 27 enters a servo-cylinder 4 or 5 through a throttle valve 28, a swash plate 3 is displaced to discharge a fixed quantity of flow rate from the oil pressure pump 1, and oil is fed to an oil pressure motor 9 from a conduit 7 at the high pressure side to rotate an underwater pump 11 and an oil pump 13 for supplement. If providing the torque motor 21 with a command when chainging the discharge quantity of the underwater pump 11 during operation, the angle of the swash plate 3 changes in a quantity corresponding to the command, and the discharge quantity of the oil pressure pump 1 varies, thus changing the number of the revolution of the oil pressure motor 9 and the underwater pump 11. Consequently, a pump that ensures low cost and high efficiency can be obtained
COPYRIGHT: (C)1979,JPO&Japio
JP11553478A 1978-09-19 1978-09-19 Oil pressure drive type variabel speed underwater pump Granted JPS5455802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11553478A JPS5455802A (en) 1978-09-19 1978-09-19 Oil pressure drive type variabel speed underwater pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11553478A JPS5455802A (en) 1978-09-19 1978-09-19 Oil pressure drive type variabel speed underwater pump

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP10477974A Division JPS5529273B2 (en) 1974-09-10 1974-09-10

Publications (2)

Publication Number Publication Date
JPS5455802A true JPS5455802A (en) 1979-05-04
JPS5641838B2 JPS5641838B2 (en) 1981-09-30

Family

ID=14664906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11553478A Granted JPS5455802A (en) 1978-09-19 1978-09-19 Oil pressure drive type variabel speed underwater pump

Country Status (1)

Country Link
JP (1) JPS5455802A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3212446B1 (en) * 2014-10-27 2022-05-11 Danfoss Power Solutions II Technology A/S Hydraulic hybrid propel circuit with hydrostatic option and method of powering an accessory function of a hydraulic system for a mobile work vehicle

Also Published As

Publication number Publication date
JPS5641838B2 (en) 1981-09-30

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