JPS5525513A - Radial piston type fluid machine - Google Patents

Radial piston type fluid machine

Info

Publication number
JPS5525513A
JPS5525513A JP9719378A JP9719378A JPS5525513A JP S5525513 A JPS5525513 A JP S5525513A JP 9719378 A JP9719378 A JP 9719378A JP 9719378 A JP9719378 A JP 9719378A JP S5525513 A JPS5525513 A JP S5525513A
Authority
JP
Japan
Prior art keywords
rotor
fluid
change
over valve
leakage
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
JP9719378A
Other languages
Japanese (ja)
Inventor
Masami Ochiai
Takashi Kanai
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP9719378A priority Critical patent/JPS5525513A/en
Publication of JPS5525513A publication Critical patent/JPS5525513A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)

Abstract

PURPOSE: To provide on the side surface of rotor a device for attaching the rotor close to a change-over valve plate with proper pressure such that excessive gap is not formed between the rotor and change-over valve in operation to prevent fluid from leakage.
CONSTITUTION: In the operation of pump, high pressure fluid flowing from a cylinder 7 to an actuator through passages 8, 16, 15 is introduced between a change- over valve plate 14 and a rotor 24 and produces force to separate one from another while high pressure fluid in the cylinder 7 flows into a pressure chamber 25, pressure pocket 30 and change-over pocked 32 through passages 26, 31 so that the fluid introduced into the pressure chamber 25 and the elasticity of elastic seal 27 attach the rotor 24 close to the change-over valve plate 14 to permit the pump operation without excessive leakage of fluid. Also fluid between the slide plate 28 and rotor 24 is positively prevented from leakage by the elastic seal 27.
COPYRIGHT: (C)1980,JPO&Japio
JP9719378A 1978-08-11 1978-08-11 Radial piston type fluid machine Pending JPS5525513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9719378A JPS5525513A (en) 1978-08-11 1978-08-11 Radial piston type fluid machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9719378A JPS5525513A (en) 1978-08-11 1978-08-11 Radial piston type fluid machine

Publications (1)

Publication Number Publication Date
JPS5525513A true JPS5525513A (en) 1980-02-23

Family

ID=14185742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9719378A Pending JPS5525513A (en) 1978-08-11 1978-08-11 Radial piston type fluid machine

Country Status (1)

Country Link
JP (1) JPS5525513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60125779A (en) * 1983-12-10 1985-07-05 Akashi Kikai Seisakusho:Kk Seal device for rotary hydraulic equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60125779A (en) * 1983-12-10 1985-07-05 Akashi Kikai Seisakusho:Kk Seal device for rotary hydraulic equipment
JPH0541835B2 (en) * 1983-12-10 1993-06-24 Akashi Kikai Seisakusho Kk

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