JPS576139A - Braking system - Google Patents

Braking system

Info

Publication number
JPS576139A
JPS576139A JP7865680A JP7865680A JPS576139A JP S576139 A JPS576139 A JP S576139A JP 7865680 A JP7865680 A JP 7865680A JP 7865680 A JP7865680 A JP 7865680A JP S576139 A JPS576139 A JP S576139A
Authority
JP
Japan
Prior art keywords
oil
pressure
chamber
conduit
piston
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
JP7865680A
Other languages
Japanese (ja)
Other versions
JPH023046B2 (en
Inventor
Takashi Kanai
Kazuo Nagashima
Nobuo Uzawa
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 JP7865680A priority Critical patent/JPS576139A/en
Publication of JPS576139A publication Critical patent/JPS576139A/en
Publication of JPH023046B2 publication Critical patent/JPH023046B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Braking Arrangements (AREA)

Abstract

PURPOSE:To limit a piston pressure without any pressure reducing valve by dividing an oil pressure chamber into two portions and providing a changeover valve, which feeds oil pressure into both chambers when the oil pressure is below the predetermined level and into one chamber when the oil pressure is above the predetermined level. CONSTITUTION:Two oil pressure chambers, 9, 12 separated liquidtight by O-ring 17 mounted on the outer circumference of a piston 7, are provided between the outer wall surface of the piston 7 and the wall surface of the chamber of a motor casing 1, and oil conduits 6, 16 are respectively connected to oil chambers 9, 12. A changeover valve 13 is disposed in way of the oil conduit 16, so as to communicate the oil chamber 12 to the oil conduit 6 or oil tank, and the pilot oil conduit 15 of the changeover valve 13 is connected to the oil conduit 6.
JP7865680A 1980-06-10 1980-06-10 Braking system Granted JPS576139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7865680A JPS576139A (en) 1980-06-10 1980-06-10 Braking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7865680A JPS576139A (en) 1980-06-10 1980-06-10 Braking system

Publications (2)

Publication Number Publication Date
JPS576139A true JPS576139A (en) 1982-01-13
JPH023046B2 JPH023046B2 (en) 1990-01-22

Family

ID=13667896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7865680A Granted JPS576139A (en) 1980-06-10 1980-06-10 Braking system

Country Status (1)

Country Link
JP (1) JPS576139A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922524A (en) * 2010-09-17 2010-12-22 中钢集团衡阳重机有限公司 Enclosed multi-disc wet type braking device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5055930A (en) * 1973-09-20 1975-05-16
JPS533388U (en) * 1976-06-28 1978-01-13

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533388B2 (en) * 1973-10-04 1978-02-06

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5055930A (en) * 1973-09-20 1975-05-16
JPS533388U (en) * 1976-06-28 1978-01-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922524A (en) * 2010-09-17 2010-12-22 中钢集团衡阳重机有限公司 Enclosed multi-disc wet type braking device

Also Published As

Publication number Publication date
JPH023046B2 (en) 1990-01-22

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