EP2460167B1 - Elektrisches schaltgerät mit einem sprungantrieb - Google Patents

Elektrisches schaltgerät mit einem sprungantrieb Download PDF

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Publication number
EP2460167B1
EP2460167B1 EP10740194.5A EP10740194A EP2460167B1 EP 2460167 B1 EP2460167 B1 EP 2460167B1 EP 10740194 A EP10740194 A EP 10740194A EP 2460167 B1 EP2460167 B1 EP 2460167B1
Authority
EP
European Patent Office
Prior art keywords
arm
switching
lever
electrical switchgear
shaft
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.)
Active
Application number
EP10740194.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2460167A1 (de
Inventor
Axel Faber
Frank Mantwill
Jürgen SEIBT
Gerd Ahlf
Andreas Schuldt
Carsten Seybold
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2460167A1 publication Critical patent/EP2460167A1/de
Application granted granted Critical
Publication of EP2460167B1 publication Critical patent/EP2460167B1/de
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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 an electrical switching device, in particular a load-disconnector, with a jump drive according to the preamble of claim 1.
  • a switching device is for example from the DE 28 50 761 C3 known.
  • load disconnectors used to switch high voltage circuits in the industrial and marine systems.
  • load disconnectors for DC voltages from 450 V to 900 V and switching currents up to 400 A are used.
  • arcs which lead to a gradual burn-off of the contacts and thus can wear the switching devices.
  • the resulting arcing must be as low as possible. This can be achieved by short switching times.
  • the switching kinematics within the load disconnectors are provided with stepper drives.
  • the jump drive increases the speed of movement that an operator applies to a switching element in the region of a switching point. This is usually done by spring elements in jump drive.
  • an on-load tap changer with energy storage is known in which the energy storage device is used for uninterrupted switching between different winding taps of a tapped transformer under load.
  • the energy accumulator has one or more compression springs, which are tensioned at the beginning of a changeover.
  • One from the DE 28 50 761 C3 known jump drive for an electrical switching device with a switching shaft comprises a compression spring whose spring force causes a jump-like movement of the switching shaft via a rotatably mounted on the switching shaft transmission member.
  • a tensioning device for the spring is also arranged rotatably on the shift shaft and rotates in its rotational movement after a freewheel movement with the transmission member.
  • the transmission member is designed as a U-shaped driver part in which a first and a second clamping pin sits.
  • the tensioning device comprises a tensioning pulley and an actuating lever which is connected to the tensioning pulley.
  • the actuating lever has a circular recess in which moves the first dowel pin, which also establishes a connection with the compression spring.
  • the first dowel pin is taken with the U-fömigen driver part on the operating lever while the spring tensioned. After reaching a dead center, the tensioned spring is released and frictionally a seated on the shift shaft dowel pin moves through the second dowel pin, so that the shift shaft is rotated.
  • a switching device with a jump drive which is characterized by a simple structural design, small number of components and a small footprint and thus in particular for use in mobile systems with limited space, such as. in ships, is suitable.
  • a switching device with a switching shaft and with a jump drive with a spring element which causes a sudden movement of the switching shaft, comprising Jump drive a buckling lever with a first and a second arm, wherein the first arm at its end facing away from the second arm is rotatably connected to the switching shaft and the second arm is rotatably mounted at its end facing away from the first arm stationary relative to the shift shaft, and wherein the second arm comprises two sub-arms, between which the spring element is arranged.
  • the articulated lever serves both to tension the spring element and as a transmission member for transmitting the spring force to the shift shaft.
  • the solution according to the invention is thus characterized by only a small number of components and a small footprint.
  • the solution according to the invention is also characterized by a structurally simple structure.
  • the jump drive acts in both switching directions, ie both for a switch-off and for a switch-on. As a result, components can also be saved.
  • the jump drive can be operated from multiple sides, which increases the flexibility in terms of the installation location of the switching device and its operation.
  • a holder for the spring element is formed on the two partial arms.
  • the spring element can thus be reliably held in a correct position between the two partial arms.
  • the spring element comprises one or more compression springs, since compression springs are characterized by a comparatively high reliability.
  • the spring element may also comprise two concentric pressure springs arranged.
  • the concentric arrangement also leads to a uniform spring load and a small footprint.
  • the switching device has a base plate in or on which the switching shaft and the second arm of the articulated lever are rotatably mounted.
  • the switching device advantageously on a manually operable control element and a mechanism for converting a movement of the operating element in a rotational movement of the shift shaft.
  • control element comprises an operating lever which is rotatably connected to a rotatable disc through which one end of a first actuating lever is guided, which in turn leads with its other end a second operating lever which is non-rotatably connected to the switching shaft.
  • FIG. 1 illustrated switching device in the form of a load disconnector 1 includes a switching shaft 2, a jump drive 3 for the switching shaft 2 and a manual control in the form of a stirrup drive. 4
  • cam switching elements are used as switching units. At voltages higher than 24V, the cam switching elements are equipped with arcing chambers to extinguish the arc.
  • the load disconnector 2 therefore has cam switching elements and arcing chambers, which are not shown in more detail.
  • the switching shaft 2 cam not shown for actuating the cam switching elements.
  • the switching shaft 2 is rotatably supported on a base plate 5 of the load disconnector 1 via a shaft bearing.
  • the cam switching elements, the arc chambers and electrical connection components are attached (not shown).
  • stirrup drive 4 is a manual drive, ie the operation is done manually, for example via an operating lever 6, and not via additional drive units.
  • An actuating mechanism 7 is used to convert a movement of an operating lever 6 of the stirrup drive 4 in a rotational movement of the shift shaft 2.
  • the operating lever 6 is rotatably connected thereto with a rotatable disc 20 through which one end of a first operating lever 21 is guided, with his other End again a second operating lever 22 leads, which is rotatably connected to the switching shaft 2.
  • the first operating lever 21 has a slot 23 for guiding the second operating lever 22. In this a bolt 24 is guided, which sits on the second operating lever 22.
  • the disc 20 Upon actuation of the operating lever 6, the disc 20 is rotated and thus the first actuating lever 21 is guided vertically downward in a substantially translational movement.
  • the bolt 24 is pressed into the upper end position of the elongated hole 23 and positively entrained by the first actuating lever 21.
  • the bolt 24 then guides the second operating lever 22 such that it rotates the switching shaft 2.
  • the jump drive 3 includes a buckling lever 8 with a first arm 9 and a second arm 10, which are connected to each other via a hinge 11.
  • the first arm 9 is rotatably connected at its second arm 10 and the hinge 11 facing away from the switching shaft 2.
  • the second arm 10 is rotatably mounted at its end facing away from the first arm 9 and the hinge 11 by a bolt 14 in a holder 13.
  • the holder 13 is screwed tightly to the base plate 5.
  • the second arm 10 is thus fixedly mounted with respect to the shift shaft 2.
  • the second arm 10 comprises two partial arms 10a, 10b, between which a spring element 15 is arranged.
  • the spring element 15 comprises two concentric cylindrical pressure springs 15a, 15b, whose longitudinal axis extends in the direction of the longitudinal axis of the second arm 10.
  • Each of the partial arms 10a, 10b has at its respective side facing the springs 15a, 15b a holder 12 for the springs 15a, 15b.
  • This holder 12 comprises a flat support surface 16 for the end faces of the spring 15 a, 15 b and elevations 17, 18.
  • the support surface 16 is bounded radially outwardly by an annular elevation 17, at which the outer compression spring 15a is applied and thus always kept in the correct position.
  • the bearing surface 16 is bounded radially inwardly by a cylindrical elevation 18, on which the inner compression spring 15b is seated and thus likewise always held in the correct position. As it turns out, these measures are sufficient for correct positioning and guidance of the position of the springs in most cases.
  • a bolt may be arranged centrally within the springs for guiding the springs 15a, 15b.
  • the bolt head is then advantageous in a socket, which is screwed in the region of the spring support surface 16 of the hinge 11 facing first part of arm 10a with this arm 10a.
  • a gap In the region of the spring support surface 16 of the joint 11 facing away from the partial arm 10 b is then preferably a gap through which the bolt is fixed by means of a lock washer.
  • the articulated lever 8 and the second operating lever 22, both of which are non-rotatably connected to the switching shaft 2 may be formed as a separate lever.
  • the articulated lever 8 is of an in FIG. 2 shown in the first end position in which he is bent over a in FIG. 3 shown stretched position in an in FIG. 4 shown second end position in which he is also kinked, and vice versa.
  • the lengths of the first arm 9, the lengths of the first and second partial arms 10a, 10b, the dimensioning of the springs 15a, 15b and the distance between the switching shaft 2 and the bolt 14 are matched to one another such that in the in FIG. 3 shown extended position of the articulated lever 8 between the first part of arm 10a and the second part of arm 10b enough space for the compressed compression springs 15a, 15b is present.
  • control shaft 2 is rotated counterclockwise via the first operating lever 21 and the second operating lever 22 and thereby the rocker arm 8 from its in FIG. 2 shown end position in an in FIG. 3 shown expanded position in which the rocker arm 8 is fully extended.
  • the springs 15a, 15b are compressed or tensioned.
  • the holder 13 serves as an abutment for the second arm 10 of the articulated lever 8 during compression of the springs 15a, 15b.
  • the springs 15a, 15b relax and move the rocker arm 8 and thus also the selector shaft 2 abruptly counterclockwise to the in FIG. 4 As a result, the spring force is dimensioned such that it reaches a switching force required for switching the contacts of the switching device 1.
  • the jump drive 3 has a structurally very simple structure and is characterized, in particular in combination with a stirrup drive, by a high reliability and shock resistance at the same time high compactness and small footprint.
  • a great advantage is also that the stirrup drive 4 can be arranged below the base plate 5 instead of above the base plate 5, wherein the first actuating lever 21 is then coupled from below with the second actuating lever 22. This results in a high degree of flexibility with regard to the installation location and the operation of the switching device, which is particularly suitable for use in mobile systems such as e.g. in ships is of great advantage.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Mechanical Control Devices (AREA)
EP10740194.5A 2009-07-31 2010-07-26 Elektrisches schaltgerät mit einem sprungantrieb Active EP2460167B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009035855A DE102009035855B4 (de) 2009-07-31 2009-07-31 Elektrisches Schaltgerät mit einem Sprungantrieb
PCT/EP2010/060771 WO2011012564A1 (de) 2009-07-31 2010-07-26 Elektrisches schaltgerät mit einem sprungantrieb

Publications (2)

Publication Number Publication Date
EP2460167A1 EP2460167A1 (de) 2012-06-06
EP2460167B1 true EP2460167B1 (de) 2015-12-23

Family

ID=43242761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740194.5A Active EP2460167B1 (de) 2009-07-31 2010-07-26 Elektrisches schaltgerät mit einem sprungantrieb

Country Status (6)

Country Link
EP (1) EP2460167B1 (ko)
KR (1) KR101375478B1 (ko)
AU (1) AU2010277675B2 (ko)
DE (1) DE102009035855B4 (ko)
ES (1) ES2560286T3 (ko)
WO (1) WO2011012564A1 (ko)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850761C3 (de) * 1978-11-23 1981-12-24 Felten & Guilleaume GmbH, 5000 Köln Sprungantriebsvorrichtung für elektrische Schaltgeräte
DE3701216A1 (de) * 1987-01-17 1988-07-28 Sachsenwerk Ag Universalantrieb
FR2723252B1 (fr) * 1994-08-01 1996-09-13 Schneider Electric Sa Mecanisme de disjoncteur equipe d'un dispositif a ccumulateur d'energie a butee d'amortissement
US6069544A (en) * 1998-10-22 2000-05-30 General Electric Company Circuit breaker operating mechanism having a collapsible contact arm linkage assembly
DE19910172B4 (de) * 1999-02-24 2006-07-06 Siemens Ag Leistungsschalter mit strombegrenzender Öffnung von Schaltkontakten
DE19925537C2 (de) * 1999-06-04 2002-01-03 Felten & Guilleaume Ag Sprungantrieb für elektrische Schaltgeräte
ITMI20032310A1 (it) * 2003-11-26 2005-05-27 Pfisterer Srl Dispositivo per l'azionamento di sezionatori sotto carico per linee elettriche, particolarmente per linee elettriche per trasporto ferroviario
DE102006008338B3 (de) * 2006-02-23 2007-02-15 Maschinenfabrik Reinhausen Gmbh Laststufenschalter mit Kraftspeicher

Also Published As

Publication number Publication date
KR101375478B1 (ko) 2014-03-18
DE102009035855A1 (de) 2011-02-10
DE102009035855B4 (de) 2011-12-08
KR20120031233A (ko) 2012-03-30
AU2010277675B2 (en) 2013-09-19
ES2560286T3 (es) 2016-02-18
AU2010277675A1 (en) 2012-02-23
EP2460167A1 (de) 2012-06-06
WO2011012564A1 (de) 2011-02-03

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