GB1207348A - Improvements in or relating to rotary electrical machines - Google Patents

Improvements in or relating to rotary electrical machines

Info

Publication number
GB1207348A
GB1207348A GB51891/67A GB5189167A GB1207348A GB 1207348 A GB1207348 A GB 1207348A GB 51891/67 A GB51891/67 A GB 51891/67A GB 5189167 A GB5189167 A GB 5189167A GB 1207348 A GB1207348 A GB 1207348A
Authority
GB
United Kingdom
Prior art keywords
contact
rotor
winding
ring
bearings
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.)
Expired
Application number
GB51891/67A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1207348A publication Critical patent/GB1207348A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Synchronous Machinery (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

1,207,348. Bearings. ROBERT BOSCH G.m.b.H. 15 Nov., 1967 [16 Nov., 1966], No. 51891/67. Heading F2A. [Also in Division H2] A bearing fault detecting device in a rotary electrical machine, e.g. a vehicle A.C. generator, comprises a stationary substantially annular contact 28 coaxial with the rotor axis and so engageable with a contact 27 rotatable with the rotor 11 that a conductive connection is made between the contacts when the rotor is displaced radially by a distance less than the length of the air gap 30 between the rotor and stator 20. In the embodiment shown, the contact 28 is a ring formed by an extension of the bearing plate 22, and the contact 27 is an extension of a slip ring 15 conveying current to an excitation winding 14 between claw polepieces 12, 13. Both bearings may have such a device and a protective layer 29 may be applied to one ring and the other ring roughened. In a modification, the outer contact 28 is hexagonal. Visual warning of a fault is given by a changing indicator lamp 40 connected between the outputs A, B of two rectifier stalks 31, 34 respectively feeding a battery 32 and other loads 33, and the winding 14; such fault shorts the winding and the lamp is lit by the battery. The device is also applicable to generators having permanent magnet rotors (46) in which case, Fig. 8, a warning device, e.g. a dashboard lamp is operated by a relay (49) connected between the contacts 27, 28 and a 3 ph. stator winding (47) feeding a bridge rectifier (48) which may be controllable. The rings 27, 28 may be of sintered bronze in order to act as emergency bearings.
GB51891/67A 1966-11-16 1967-11-15 Improvements in or relating to rotary electrical machines Expired GB1207348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0089868 1966-11-16

Publications (1)

Publication Number Publication Date
GB1207348A true GB1207348A (en) 1970-09-30

Family

ID=6984985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51891/67A Expired GB1207348A (en) 1966-11-16 1967-11-15 Improvements in or relating to rotary electrical machines

Country Status (1)

Country Link
GB (1) GB1207348A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291937A (en) * 1994-07-27 1996-02-07 Lucas Aerospace Power Equip Bearing failure detector for electrical generator
US6445099B1 (en) 2000-05-09 2002-09-03 Trw, Inc. Bearing failure detector for electrical generator
CN104121153A (en) * 2013-04-23 2014-10-29 西门子公司 Wear sensor for wind turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291937A (en) * 1994-07-27 1996-02-07 Lucas Aerospace Power Equip Bearing failure detector for electrical generator
US5602437A (en) * 1994-07-27 1997-02-11 Lucas Aerospace Power Equipment Corporation Bearing failure detector for electric generator
GB2291937B (en) * 1994-07-27 1998-02-25 Lucas Aerospace Power Equip Bearing failure detector for electrical generator
US6445099B1 (en) 2000-05-09 2002-09-03 Trw, Inc. Bearing failure detector for electrical generator
CN104121153A (en) * 2013-04-23 2014-10-29 西门子公司 Wear sensor for wind turbine
CN104121153B (en) * 2013-04-23 2018-06-05 西门子公司 For the wear sensor of wind turbine

Also Published As

Publication number Publication date
DE1488879A1 (en) 1969-04-03
DE1488879B2 (en) 1975-06-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee