EP0230851A1 - Interrupteur de puissance avec un dispositif d'actionnement et avec un accumulateur d'énergie - Google Patents

Interrupteur de puissance avec un dispositif d'actionnement et avec un accumulateur d'énergie Download PDF

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Publication number
EP0230851A1
EP0230851A1 EP86730184A EP86730184A EP0230851A1 EP 0230851 A1 EP0230851 A1 EP 0230851A1 EP 86730184 A EP86730184 A EP 86730184A EP 86730184 A EP86730184 A EP 86730184A EP 0230851 A1 EP0230851 A1 EP 0230851A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
cross member
spring
springs
legs
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
EP86730184A
Other languages
German (de)
English (en)
Other versions
EP0230851B1 (fr
Inventor
Ulrich Ing. Marquardt (Grad.)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0230851A1 publication Critical patent/EP0230851A1/fr
Application granted granted Critical
Publication of EP0230851B1 publication Critical patent/EP0230851B1/fr
Expired 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
    • H01H3/22—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
    • H01H2003/3068—Housing support frame for energy accumulator and cooperating mechanism

Definitions

  • the invention relates to a circuit breaker with a drive device and an energy storage device which contains at least one spring and is supported on a supporting structure of the circuit breaker and which has a push rod which is used to introduce a tensioning force or to transmit the storage force.
  • a circuit breaker of this type has become known, for example, from EP-A-0 088 215.
  • the spring is designed as a helical compression spring, the windings of which enclose two guide rods which can be displaced relative to one another in the longitudinal direction of the spring, one of which acts as a push rod in the direction of the drive parts of the circuit breaker, while the further guide rod for supporting and holding the spring arrangement on the supporting structure of the Circuit breaker is used.
  • a bolt is connected to the further guide rod, for the passage of which an opening is provided in the supporting structure of the circuit breaker.
  • the spring arrangement is to be fastened by a pin to be inserted into a transverse bore in the bolt on the back of the structure.
  • the invention is based on the object of eliminating the previous obstacles and dangers in connection with the voltage of the energy stores of circuit breakers.
  • This object is achieved according to the invention in that the energy store is designed as an independent assembly comprising the fixed abutment, a movable abutment and the push rod, the fixed abutment being a cross member that can be inserted between the side walls of the supporting structure of the circuit breaker and connected to the side walls is trained.
  • This design creates the possibility of manufacturing the energy store independently of the other components of a circuit breaker. Since it is now a relatively small and easily accessible assembly, it is not difficult to tension the spring in a device, all the requirements for easy handling and completely safe execution of the process are given.
  • the fixed abutment of the spring is designed as a cross member of the supporting structure of the circuit breaker and is therefore dimensioned not only in accordance with the stresses caused by the spring forces, but also other forces to be transmitted via the side walls and thus represents a component of great stability .
  • the desired great strength of the cross member can be achieved with a comparatively low cost of material in that the cross member has a U-shaped profile, the central part of which forms a bearing surface for the spring and the legs of which extend approximately parallel to the longitudinal axis of the spring.
  • the movable abutment of the spring can also have a U-shaped profile with legs extending parallel to the longitudinal axis of the spring, at least one leg of the cross member and of the movable abutment being at least partially overlapping one another when the spring is under tension.
  • inserts can be connected to its legs, each of which has an extension which extends in the direction of the movable abutment and is formed at a distance from at least one of the legs of the cross member.
  • guide surfaces are formed which grip the movable abutment when approaching the cross member when the spring or springs are tensioned and effectively limit the mutual rotation of the parts.
  • the springs can be secured in the tensioned state in a simple manner in that the cross member has a passage opening for an end piece of the push rod, wherein a bore for receiving a securing member is arranged in the end piece with an approximately operationally tensioned spring. It is advisable to choose a slightly lower tension of the spring or springs than corresponds to the operational full tension, since there is no difficulty in causing the remaining spring stroke after the energy store has been installed in the circuit breaker by means of its drive device.
  • the securing member is lifted off the cross member and can now be removed safely and without special tools, which makes the switch ready for operation.
  • the low-voltage circuit breaker 1 shown in FIG. 1 is shown in simplified form in the section of a pole and the switch lock.
  • the circuit breaker 1 has two side walls 2 and 3 as supporting components, one side wall 2 of which is visible in FIG. 1, while both side walls 2 and 3 are indicated in Figure 5.
  • An insulating carrier 4 for three adjacent contact arrangements extends between the side walls 2 and 3.
  • the current path of each pole comprises, starting from an upper, forked connecting rail 5 with partial rails 6 and 7, a fixed switching element 10, a movable switching lever 11, a flexible current band 12 and a lower connecting rail 13, which is likewise composed of partial rails 14 and 15.
  • the contact lever 11 is articulated on a contact carrier 16 which is pivotable about a fixed pivot bearing 17.
  • a switching shaft 21 mounted in the side walls 2 and 3 acts on the contact carrier 16 with the interposition of an insulating coupling rod 20.
  • a toggle lever arrangement of three articulated toggle levers 24, 25 and 26 engages, which in the illustrated switch-on position of the circuit breaker by a support lever 27 and a latch lever 30 is supported on a half shaft 31.
  • Rotation of the half-shaft 31 by a trigger (not shown) or by hand by means of a push button 32 cancels the support of the toggle lever system and causes it to buckle.
  • the contact carrier 16 and the contact lever 11 are then moved under the influence of a compression spring 33 into the switch-off position.
  • the energy required for switching on is stored in a manner not shown in detail by tensioning one or more helical springs 34, which are part of an energy store 35 made as a special structural unit, which is shown in simplified form in FIG.
  • a push rod 36 of the energy store 35 is connected to a driving rocker 37, which exerts the spring force transmits the lower toggle lever 26.
  • the compression springs 34 can be locked in the tensioned state in a manner known per se, a further pushbutton 40 being provided to release this locking and thus to switch on the circuit breaker.
  • a cross member 41 which is shown in FIG. 2 as an individual part in a view, serves as the load-bearing main part of the energy store 35.
  • Cross sections of the cross member 41 in the planes indicated in FIG. 2 are shown in FIGS. 3 and 4.
  • the cross member 41 has a substantially U-shaped main body 42 made of sheet steel, the legs 43 and 44 of which are of different lengths.
  • the leg 43 lying at the top in the installation position according to FIG. 1 is shorter than the lower leg 44 and is approximately at right angles to the middle part 45.
  • the leg 44 takes up a somewhat larger angle relative to the middle part 45.
  • the purpose of this design will be explained later.
  • At both ends of the cross member 41 has clamping pieces 46 which are provided with funnel-shaped passages 47.
  • the clamping pieces 46 can be made in one piece with the main body 42.
  • insert pieces 48 are inserted between the legs 43 and 44, the shape of which can best be seen in FIGS. 2 and 3.
  • each insert 48 has two legs 50 and 51, the angular position of which is adapted to the legs 43 and 44 of the main body 42.
  • the leg 51 of each insert 48 is dimensioned longer in accordance with the greater length of the associated leg 44.
  • the inserts 48 rest with their legs 50 and 51 on the legs 43 and 44 and are connected to them at these points by screws 52 and nuts 53.
  • each insert 48 forms an extension extending to the open side of the U-profile of the main body 42, the edges 56 and 57 of which are at an angle to one another. As particularly shown in FIGS. 3 and 5, this configuration forms a wedge-shaped tapering space 60 between the leg 44 and the edge 57.
  • an angle piece 61 is connected, which has a leg 62 which continues the leg 43 to the rear of the circuit breaker 1. Correct cohesion is achieved by interlocking pins 63 and holes 64 and rivets 65.
  • the angle piece 61 and the insert pieces 48 stiffen the U-profile in such a way that, despite a relatively small amount of material and weight, an extraordinarily high strength of the cross member against bending and torsion is achieved.
  • the web 62 also serves as a support for a current transformer 8 shown in FIG. 1.
  • the energy store 35 contains three helical compression springs 34 arranged parallel to one another. One end of these is supported on the middle part 44 of the cross member 41.
  • the springs 34 are given the desired mutual distance by three pairs of tongues 70 which are pressed out of the central part 44 of the base body 42.
  • openings 71 are formed for the push rod 36 and two guide rods 72.
  • the angle piece 61 is provided with corresponding openings 78 (FIG. 3).
  • the guide rods 72 are shorter than the push rod 36 and only serve to prevent the springs 36 from bending out laterally.
  • the guide rods 72 and accordingly the laterally arranged openings 71 can be omitted if the springs 34 do not tend to deflect laterally or buckle due to their dimensioning.
  • the springs 34 are supported on a movable abutment 73 which, according to FIG. 6, has a U-shaped cross section and the middle part of which is provided with lugs 75 for centering the springs 34.
  • a crosspiece 74 of the push rod 36 serves to transmit the spring forces.
  • the legs 76 of the abutment 73 extend in the direction of the cross member 41 and are dimensioned such that one of the legs 76 of the abutment 73 is in an overlapping position with the longer leg 44 of the base body 42 when the springs 34 are biased and in this position are secured. This can be done by inserting a locking pin 77 (FIG. 5) through a transverse bore 81 (FIG.
  • the springs 34 can also be secured in the tensioned position in a modified manner, as shown in FIG. 7.
  • the guide rods 72 in FIG. 5 are replaced by screws or threaded bolts 82, on the projecting ends of which nuts 83 are screwed on. This arrangement is particularly suitable for larger spring forces, for the control of which a cross pin corresponding to cross pin 77 in FIG. 5 would assume imprecise dimensions.
  • the energy store 35 shown in FIGS. 5 and 6 is an independent assembly which, after being assembled in a suitable device, can be tensioned in a simple manner and secured by inserting the locking pin 77 in the tensioned state.
  • the cross member 41 is part of the structure of the circuit breaker, so that this cross member not only performs the function of a fixed abutment of the helical compression springs 34, but contributes to the strength of the structure of the circuit breaker.
  • the cross member 41 is connected by means of the passages 46 to the side walls 2 and 3 ( Figures 1 and 5) by screws or similar fasteners. It is not difficult to bring the push rod 36 into engagement with the driving rocker 37 (FIG.
  • the push rod 36 can be tensioned in a known manner by means of the drive device of the circuit breaker, the push rod 36 continuing to pass through the associated openings 71 and 78 of the cross member 41 and the securing pin 77 can be removed. Likewise, the push rod 36 can be secured again by inserting the locking pin 77 if the spring accumulator is to be removed from the circuit breaker 1.
  • the energy store 35 described is suitable for receiving a spring 36 or two or three springs 36. In this way, the required energy supply can be provided for different circuit breakers. Moreover, it is only by using longer cross members 41 and movable abutment 73 possible to accommodate an even larger number of springs. The push rod 36 and the insert pieces 48 remain unchanged.
  • the energy store 35 is not tied to a specific design of a circuit breaker. Rather, only the cross member and the push rod 36 are to be considered as transition parts, as a result of which the energy store is also suitable for other switching devices, for example medium-voltage load and power switches.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP86730184A 1985-11-29 1986-11-05 Interrupteur de puissance avec un dispositif d'actionnement et avec un accumulateur d'énergie Expired EP0230851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853542746 DE3542746A1 (de) 1985-11-29 1985-11-29 Leistungsschalter mit einer antriebsvorrichtung und einem energiespeicher
DE3542746 1985-11-29

Publications (2)

Publication Number Publication Date
EP0230851A1 true EP0230851A1 (fr) 1987-08-05
EP0230851B1 EP0230851B1 (fr) 1989-10-25

Family

ID=6287505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730184A Expired EP0230851B1 (fr) 1985-11-29 1986-11-05 Interrupteur de puissance avec un dispositif d'actionnement et avec un accumulateur d'énergie

Country Status (4)

Country Link
US (1) US4746778A (fr)
EP (1) EP0230851B1 (fr)
JP (1) JPS62133620A (fr)
DE (2) DE3542746A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227352A1 (de) * 1992-04-01 1993-10-07 Siemens Ag Mehrpoliger Niederspannungs-Leistungsschalter mit einer Schaltwelle
DE4416088C1 (de) * 1994-04-20 1995-06-14 Siemens Ag Hebelanordnung zur Übertragung einer Antriebskraft
DE19609407A1 (de) * 1996-02-29 1997-09-04 Siemens Ag Leistungsschalter mit einem Federspeicher
DE10323094B3 (de) * 2003-05-16 2004-08-12 Siemens Ag Leistungsschalter
DE10343348B4 (de) * 2003-09-12 2005-08-25 Siemens Ag Antriebsvorrichtung für einen Niederspannungs- Leistungsschalter
CN105371724B (zh) * 2015-12-24 2019-04-23 安徽中电兴发与鑫龙科技股份有限公司 一种用于检查储能轴装配角度的工装

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073929A (en) * 1959-06-25 1963-01-15 Westinghouse Electric Corp Circuit breaker with spring closing mechanism
US3171938A (en) * 1960-12-30 1965-03-02 Ite Circuit Breaker Ltd Manual slow-close on spring operated breaker
US4163133A (en) * 1976-04-28 1979-07-31 Westinghouse Electric Corp. Circuit breaker apparatus including jack shaft support
EP0088215A2 (fr) * 1982-01-28 1983-09-14 Mitsubishi Denki Kabushiki Kaisha Disjoncteur à air libre

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595225A (en) * 1979-01-16 1980-07-19 Tokyo Shibaura Electric Co High speed breaker
JPS56107425A (en) * 1980-01-31 1981-08-26 Tokyo Shibaura Electric Co Circuit breaker
JPS58129717A (ja) * 1982-01-28 1983-08-02 三菱電機株式会社 気中しや断器
JPS58115046U (ja) * 1982-01-29 1983-08-05 三菱電機株式会社 気中しや断器
JPS58131623A (ja) * 1982-01-29 1983-08-05 三菱電機株式会社 気中しや断器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073929A (en) * 1959-06-25 1963-01-15 Westinghouse Electric Corp Circuit breaker with spring closing mechanism
US3171938A (en) * 1960-12-30 1965-03-02 Ite Circuit Breaker Ltd Manual slow-close on spring operated breaker
US4163133A (en) * 1976-04-28 1979-07-31 Westinghouse Electric Corp. Circuit breaker apparatus including jack shaft support
EP0088215A2 (fr) * 1982-01-28 1983-09-14 Mitsubishi Denki Kabushiki Kaisha Disjoncteur à air libre

Also Published As

Publication number Publication date
US4746778A (en) 1988-05-24
EP0230851B1 (fr) 1989-10-25
JPS62133620A (ja) 1987-06-16
DE3666641D1 (en) 1989-11-30
DE3542746A1 (de) 1987-06-04

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