JPS6466471A - Revolution detecting device for hydraulic motor - Google Patents

Revolution detecting device for hydraulic motor

Info

Publication number
JPS6466471A
JPS6466471A JP22212287A JP22212287A JPS6466471A JP S6466471 A JPS6466471 A JP S6466471A JP 22212287 A JP22212287 A JP 22212287A JP 22212287 A JP22212287 A JP 22212287A JP S6466471 A JPS6466471 A JP S6466471A
Authority
JP
Japan
Prior art keywords
spline
cylinder block
detecting device
revolution detecting
revolution
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
JP22212287A
Other languages
Japanese (ja)
Inventor
Hideaki Tanaka
Toichi Hirata
Masakazu Haga
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 JP22212287A priority Critical patent/JPS6466471A/en
Publication of JPS6466471A publication Critical patent/JPS6466471A/en
Pending legal-status Critical Current

Links

Landscapes

  • Hydraulic Motors (AREA)

Abstract

PURPOSE:To utilize a spline as a revolution detecting part by arranging an electromagnetic pickup at a position facing a spline of a cylinder block which forms a mechanical brake. CONSTITUTION:A cylinder block 3a is accommodated in a freely rotatable manner within a motor casing 1a which forms an outer shell, while a mechanical brake, which restricts the revolution of a motor output shaft 2a, is also accommodated in the casing 1a. This mechanical brake is provided with a friction plate 27 and a piston 28, which can abut on this friction plate 27. A revolution detecting device is equipped with a spline 24, which is formed on the outer periphery of the cylinder block 3a, and an electromagnetic pickup 22. This pick up 22 is accomodated in a through hole 21 that is formed at a position of the motor casing 1a, which faces the spline 24 of the cylinder block 3a.
JP22212287A 1987-09-07 1987-09-07 Revolution detecting device for hydraulic motor Pending JPS6466471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22212287A JPS6466471A (en) 1987-09-07 1987-09-07 Revolution detecting device for hydraulic motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22212287A JPS6466471A (en) 1987-09-07 1987-09-07 Revolution detecting device for hydraulic motor

Publications (1)

Publication Number Publication Date
JPS6466471A true JPS6466471A (en) 1989-03-13

Family

ID=16777508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22212287A Pending JPS6466471A (en) 1987-09-07 1987-09-07 Revolution detecting device for hydraulic motor

Country Status (1)

Country Link
JP (1) JPS6466471A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129381A (en) * 1990-06-18 1992-07-14 Nissan Motor Co., Ltd. Fuel injection system for internal combustion engine
JP2003090393A (en) * 2001-09-14 2003-03-28 Komatsu Ltd Hydraulic drive speed reducer
JP2020033886A (en) * 2018-08-27 2020-03-05 ナブテスコ株式会社 Hydraulic drive device, sensor housing and work machine
CN112983730A (en) * 2021-03-05 2021-06-18 江苏真绩机械制造有限公司 Integral output shaft hydraulic motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186173A (en) * 1981-05-13 1982-11-16 Toshiba Corp Detector for number of revolution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186173A (en) * 1981-05-13 1982-11-16 Toshiba Corp Detector for number of revolution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129381A (en) * 1990-06-18 1992-07-14 Nissan Motor Co., Ltd. Fuel injection system for internal combustion engine
JP2003090393A (en) * 2001-09-14 2003-03-28 Komatsu Ltd Hydraulic drive speed reducer
JP2020033886A (en) * 2018-08-27 2020-03-05 ナブテスコ株式会社 Hydraulic drive device, sensor housing and work machine
CN112983730A (en) * 2021-03-05 2021-06-18 江苏真绩机械制造有限公司 Integral output shaft hydraulic motor

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