US3183332A - Circuit breaker closing mechanisms - Google Patents

Circuit breaker closing mechanisms Download PDF

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Publication number
US3183332A
US3183332A US215854A US21585462A US3183332A US 3183332 A US3183332 A US 3183332A US 215854 A US215854 A US 215854A US 21585462 A US21585462 A US 21585462A US 3183332 A US3183332 A US 3183332A
Authority
US
United States
Prior art keywords
spring
closing
trip
crankshaft
cam
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 - Lifetime
Application number
US215854A
Other languages
English (en)
Inventor
Russell E Frink
Olsson Paul
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US215854A priority Critical patent/US3183332A/en
Priority to ES0290565A priority patent/ES290565A1/es
Priority to FR944020A priority patent/FR1374429A/fr
Priority to JP4074963A priority patent/JPS4026779B1/ja
Application granted granted Critical
Publication of US3183332A publication Critical patent/US3183332A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3063—Decoupling charging handle or motor at end of charging cycle or during charged condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3021—Charging means using unidirectional coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper

Definitions

  • a further object of the invention is to provide for reducing shock on the mechanism during both closing and opening of the breaker.
  • FIG. 4 is a view, in right side elevation, of the mechanism
  • FIGS. 6 to 9, inclusive are detail views showing different operating positions of parts of the closing mechanism.
  • the ratchet mechanism 15 comprises a ratchet wheel 36, an actuator 37, a pawl carried by the actuator 37, and an additional pawl 3% pivotally mounted in the frame 11 by means of a pin 41.
  • the ratchet whee 36 is secured to the end of the shaft 14 opposite the crank lever 35.
  • the wheel 36 has a plurality of teeth disposed around a portion of its periphery.
  • the actuator 37 pivots on the shaft 14 and is biased toward an eccentric 43 by a tension spring 44.
  • the pawl 38 is biased toward the ratchet wheel 36 by means of a torsion spring 46.
  • the pawl 39 is also biased toward the ratchet wheel 36 by means of a torsion spring 47.
  • the motor lid drives a shaft 48 through spur gears and 51.
  • the eccentric 43 is secured to the shaft 45
  • the ratchet wheel 36 is advanced one tooth for each revolution of the shaft 43 in the clockwise direction, as viewed in PEG. 3, by means of the actuator 37 and the pawl 38.
  • the pawl 39 prevents the wheel 35 from rotating backwards between strokes of the actuator 37.
  • the last tooth on the ratchet wheel carries the crank lever 35 just over center in the spring charged position, and the force of the main spring 13 brings a roller 52, carried by the crank lever 35, against a closing latch 53 as shown in FIG. 7. In this position, there are no more teeth on the ratchet whee for the pawl 38 to engage and the motor L6 runs free until it is shutoff.
  • openings 96 are provided in one end of the cylinder 74. These openings are closed by valves 97 which are biased to the closed position by relatively light springs 69.
  • the cam 18, the lever :23 and the tripping latch assembly 59 are as shown in FIG. 8, having been reset by the spring 71.
  • the pressure of the roller 52 against the sloping surface of the latch 53 biases the latch in a counterclockwise direction against a roller 96 carried by a closing trigger 91.
  • the trigger 9 1. is biased in a counterclockwise direction about its pivot 92 by a spring 93. Lifting the trigger 91 releases the latch 5-3 and the closing spring 13 rotates the crank lever and the cam 18 in -a counterclockwise direction to close the breaker as shown in FIG. 5. In this position, the toggle link-v age 17 is fully extended.
  • a stored-energy mechanism comprising a frame, a trip-free shaft rotatably mounted in the frame, a closing spring, a crankshaft rotatably mounted in the frame, means for driving the crankshaft to charge the spring, closing latch means for releasably retaining the spring in the charged condition, an operating lever secured to the tripfree shaft, tripping latch means, toggle means having one link connected to the trip-free shaft and another link connected to the tripping latch means, and cam means driven by the crankshaft to extend the toggle means to rotate the trip-free shaft when the closing latch means is released to release the energy stored in said sprin 3.
  • a stored-energy mechanism comprising a frame, a trip-free shaft rotatably mounted in the frame, a closing spring, a crankshaft rotatably mounted in the frame, means for driving the crankshaft to charge the spring, closing latch means for releasably retaining the spring in the charged condition, an operating lever secured to the trip-free shaft, tripping latch means, toggle means having a first link and a second link pivotally connected together, one end of the first link being pivotally attached to said operating lever, one end of the second link being pivotally attached to the tripping latch means, cam means secured to the crankshaft, and said cam means being driven by the spring to extend the toggle means to rotate the tripfree shaft when the closing latch means is released.
  • a stored-energy mechanism for actuating contact members of a circuit breaker, in combination, a frame, a trip-free shaft rotatably mounted in the frame, a plurality of operating levers secured to the shaft, operating means for connecting said levers to the breaker contact members, a closing spring, a crankshaft rotatably mounted in the frame, a ratchet wheel secured to the crankshaft, a pivoted actuator for driving the ratchet wheel and the crankshaft to charge the spring, a motor for oscillating the actuator, closing latch means for releasably retaining the spring in the charged condition, tripping latch means, toggle means connected between the tripping latch means and one of the operating levers on the trip-free shaft, cam means driven by the crankshaft to extend the toggle means to rotate the trip-free shaft and to close the contact members of said circuit breaker when the closing latch means is released to release the energy stored in said spring, a spring-biased latch for retaining the toggle means in the extended position, and said tripping
  • a cam rotatable to close the breaker, said cam having an increasing lobe portion, means for rotating the earn, a roller disposed to engage and follow the cam, a toggle linkage carrying the roller, said linkage comprising a compression link and a tension link, said cam being disposed adjacent

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
US215854A 1962-08-09 1962-08-09 Circuit breaker closing mechanisms Expired - Lifetime US3183332A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US215854A US3183332A (en) 1962-08-09 1962-08-09 Circuit breaker closing mechanisms
ES0290565A ES290565A1 (es) 1962-08-09 1963-08-03 Un mecanismo almacenador de energia
FR944020A FR1374429A (fr) 1962-08-09 1963-08-07 Mécanismes de fermeture de disjoncteur
JP4074963A JPS4026779B1 (enExample) 1962-08-09 1963-08-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US215854A US3183332A (en) 1962-08-09 1962-08-09 Circuit breaker closing mechanisms

Publications (1)

Publication Number Publication Date
US3183332A true US3183332A (en) 1965-05-11

Family

ID=22804679

Family Applications (1)

Application Number Title Priority Date Filing Date
US215854A Expired - Lifetime US3183332A (en) 1962-08-09 1962-08-09 Circuit breaker closing mechanisms

Country Status (4)

Country Link
US (1) US3183332A (enExample)
JP (1) JPS4026779B1 (enExample)
ES (1) ES290565A1 (enExample)
FR (1) FR1374429A (enExample)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254186A (en) * 1963-12-10 1966-05-31 Westinghouse Electric Corp Stored energy mechanism for circuit breakers
US3582595A (en) * 1969-10-31 1971-06-01 Erickson Electrical Equipment Trip-free switch-operating mechanism
US3585330A (en) * 1969-06-25 1971-06-15 Westinghouse Electric Corp Motor-operated spring-closing circuit breaker
US3600538A (en) * 1970-01-09 1971-08-17 Allis Chalmers Mfg Co Circuit breaker arrangement for preventing slow closing of breaker contacts
US3600540A (en) * 1969-11-06 1971-08-17 Westinghouse Electric Corp Motor-operated spring-closing circuit breaker
US4114005A (en) * 1977-09-01 1978-09-12 Westinghouse Electric Corp. Circuit breaker spring assembly
US4166205A (en) * 1976-12-30 1979-08-28 Westinghouse Electric Corp. Stored energy circuit breaker
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
US5101675A (en) * 1989-11-17 1992-04-07 Mr Maschinenfabrik Rheinhausen Gmbh Force-storing actuator for rotor of step transformer
US5195632A (en) * 1990-10-26 1993-03-23 Maschinenfabrik Reinhausen Gmbh Force-storing actuator for load switch of step transformer
WO2013160272A1 (fr) * 2012-04-25 2013-10-31 Alstom Technology Ltd Commande de type a ressort(s) d'un interrupteur à haute ou moyenne tension munie d'un dispositif d'accouplement à roue libre à cliquet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581181A (en) * 1950-01-07 1952-01-01 Gen Electric Heavy-duty air circuit breaker
US2674345A (en) * 1951-10-25 1954-04-06 Gen Electric Instantaneous latch released energy storing load operating device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581181A (en) * 1950-01-07 1952-01-01 Gen Electric Heavy-duty air circuit breaker
US2674345A (en) * 1951-10-25 1954-04-06 Gen Electric Instantaneous latch released energy storing load operating device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254186A (en) * 1963-12-10 1966-05-31 Westinghouse Electric Corp Stored energy mechanism for circuit breakers
US3585330A (en) * 1969-06-25 1971-06-15 Westinghouse Electric Corp Motor-operated spring-closing circuit breaker
US3582595A (en) * 1969-10-31 1971-06-01 Erickson Electrical Equipment Trip-free switch-operating mechanism
US3600540A (en) * 1969-11-06 1971-08-17 Westinghouse Electric Corp Motor-operated spring-closing circuit breaker
US3600538A (en) * 1970-01-09 1971-08-17 Allis Chalmers Mfg Co Circuit breaker arrangement for preventing slow closing of breaker contacts
US4166205A (en) * 1976-12-30 1979-08-28 Westinghouse Electric Corp. Stored energy circuit breaker
US4114005A (en) * 1977-09-01 1978-09-12 Westinghouse Electric Corp. Circuit breaker spring assembly
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
US5101675A (en) * 1989-11-17 1992-04-07 Mr Maschinenfabrik Rheinhausen Gmbh Force-storing actuator for rotor of step transformer
US5195632A (en) * 1990-10-26 1993-03-23 Maschinenfabrik Reinhausen Gmbh Force-storing actuator for load switch of step transformer
WO2013160272A1 (fr) * 2012-04-25 2013-10-31 Alstom Technology Ltd Commande de type a ressort(s) d'un interrupteur à haute ou moyenne tension munie d'un dispositif d'accouplement à roue libre à cliquet
FR2990051A1 (fr) * 2012-04-25 2013-11-01 Alstom Technology Ltd Commande de type a ressort(s) d'un interrupteur a haute ou moyenne tension munie d'un dispositif d'accouplement a roue libre a cliquet
US9583281B2 (en) 2012-04-25 2017-02-28 Alstom Technology Ltd Control of spring(s) type for a high- or medium-voltage breaker furnished with a pawled free wheel coupling device

Also Published As

Publication number Publication date
FR1374429A (fr) 1964-10-09
JPS4026779B1 (enExample) 1965-11-22
ES290565A1 (es) 1963-12-01

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