JPS57171086A - Piston pump - Google Patents

Piston pump

Info

Publication number
JPS57171086A
JPS57171086A JP56055909A JP5590981A JPS57171086A JP S57171086 A JPS57171086 A JP S57171086A JP 56055909 A JP56055909 A JP 56055909A JP 5590981 A JP5590981 A JP 5590981A JP S57171086 A JPS57171086 A JP S57171086A
Authority
JP
Japan
Prior art keywords
oil
port
jet flow
main
communicated
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
JP56055909A
Other languages
Japanese (ja)
Other versions
JPS6145073B2 (en
Inventor
Tokihiko Umeda
Hiroshi Morita
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP56055909A priority Critical patent/JPS57171086A/en
Publication of JPS57171086A publication Critical patent/JPS57171086A/en
Publication of JPS6145073B2 publication Critical patent/JPS6145073B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

PURPOSE:To prevent errosion of a piston chamber of a piston pump caused at its opening section by main jet flow of oil, by changing the injection angle of main jet flow of oil ejected from a main oil feed port or a slot formed in a valve plate for the purpose of lowering the pump noises. CONSTITUTION:Between a low-pressure port 10 and a high-pressure port 11 of a valve plate 7, there is formed a subsidiary oil feed port 22 communicated to an oil groove 15, the port 22 is communicated to an opening 12 of a piston chamber 2 prior to a main oil feed port 16 which is communicated to the high- pressure port 11 via the oil groove 15. When the subsidiary oil feed port 22 is communicated to the opening 12 of the piston chamber 2, a main jet flow of oil 18 begins to be ejected from the main port 16 along a sliding surface 19. Here, the main jet flow 18 of oil is deflected through a large angle in a direction increasing the injection angle theta by a subsidiary jet flow 23 of oil ejected from the subsidiary port 22 in a direction substantially parallel to the axis of a piston 4. Therefore, it is enabled to prevent errosion by the main jet flow of oil.
JP56055909A 1981-04-13 1981-04-13 Piston pump Granted JPS57171086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055909A JPS57171086A (en) 1981-04-13 1981-04-13 Piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055909A JPS57171086A (en) 1981-04-13 1981-04-13 Piston pump

Publications (2)

Publication Number Publication Date
JPS57171086A true JPS57171086A (en) 1982-10-21
JPS6145073B2 JPS6145073B2 (en) 1986-10-06

Family

ID=13012232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055909A Granted JPS57171086A (en) 1981-04-13 1981-04-13 Piston pump

Country Status (1)

Country Link
JP (1) JPS57171086A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550645A (en) * 1984-04-27 1985-11-05 Sundstrand Corporation Thin valve plate for a hydraulic unit
JPH0514568U (en) * 1991-07-31 1993-02-26 川崎重工業株式会社 Hydraulic pump motor
KR980009921A (en) * 1996-07-31 1998-04-30 김무 Valve Plate Structure of Axial Piston Pump
JP2003065215A (en) * 2001-08-22 2003-03-05 Toshiba Mach Co Ltd Piston pump motor
CN102434420A (en) * 2012-01-13 2012-05-02 无锡威孚精密机械制造有限责任公司 Gas etching preventing distribution disk
KR20230040264A (en) 2021-09-15 2023-03-22 나부테스코 가부시키가이샤 Fluid machine and construction machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61118572U (en) * 1985-01-09 1986-07-26

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51129905A (en) * 1975-04-24 1976-11-11 Lucas Industries Ltd Hydraulic rotary machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51129905A (en) * 1975-04-24 1976-11-11 Lucas Industries Ltd Hydraulic rotary machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550645A (en) * 1984-04-27 1985-11-05 Sundstrand Corporation Thin valve plate for a hydraulic unit
JPH0514568U (en) * 1991-07-31 1993-02-26 川崎重工業株式会社 Hydraulic pump motor
KR980009921A (en) * 1996-07-31 1998-04-30 김무 Valve Plate Structure of Axial Piston Pump
JP2003065215A (en) * 2001-08-22 2003-03-05 Toshiba Mach Co Ltd Piston pump motor
JP4657520B2 (en) * 2001-08-22 2011-03-23 東芝機械株式会社 Piston pump / motor
CN102434420A (en) * 2012-01-13 2012-05-02 无锡威孚精密机械制造有限责任公司 Gas etching preventing distribution disk
KR20230040264A (en) 2021-09-15 2023-03-22 나부테스코 가부시키가이샤 Fluid machine and construction machine

Also Published As

Publication number Publication date
JPS6145073B2 (en) 1986-10-06

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