WO2011012564A1 - Electric switchgear having a snap-action drive - Google Patents
Electric switchgear having a snap-action drive Download PDFInfo
- Publication number
- WO2011012564A1 WO2011012564A1 PCT/EP2010/060771 EP2010060771W WO2011012564A1 WO 2011012564 A1 WO2011012564 A1 WO 2011012564A1 EP 2010060771 W EP2010060771 W EP 2010060771W WO 2011012564 A1 WO2011012564 A1 WO 2011012564A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arm
- switching device
- switching
- shaft
- lever
- Prior art date
Links
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 e.g. known from DE 28 50 761 C3.
- Electrical switching devices often require an indirectly acting drive to ensure that switching operations always take place independently of external influences with the same and sufficient speed. This is realized, for example, by jump drives, which comprise a rechargeable energy store, which enables sudden switching.
- 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 will increase the speed of movement that an operator has on
- a jump drive known from DE 28 50 761 C3 for an electrical switching device with a selector shaft comprises a compression spring, the spring force of which causes a jump-like movement of the selector shaft via a transmission member arranged so as to be rotatably mounted on the selector shaft.
- 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.
- Exceeding the stretched position can then relax the spring element and then abruptly moves the rocker arm and the switching shaft connected thereto, whereby a fast switching operation is effected in the switching device.
- the articulated lever serves both to tension the spring element and as a transmission member for transmitting the spring force on the
- the solution according to the invention is thus characterized by only a small number of components and a small footprint.
- an articulated lever is a structurally simple component, so that 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. Thus, even if one of the two springs fails, the function of the switching device can be maintained.
- 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.
- the 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 shows a partial sectional view of an electrical switching device according to the invention in side view
- FIG. 2 shows a detailed representation of the jump drive of FIG
- Switching device of FIG. 1 in a first end position, 3 shows a detailed representation of the jump drive of
- FIG. 1 An only hinted in Figure 1 switching device in the form of a load-disconnector 1 includes a switching shaft 2, a jump drive 3 for the shift 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 has not shown cams 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.
- On the base plate 5 are the cam switching elements, the
- the stirrup drive 4 is a hand drive, i. 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 rotary 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, the rotation with the
- the first operating lever 21 has a slot 23 for guiding the second operating lever 22.
- a bolt 24 is guided, which sits on the second operating lever 22.
- 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.
- Jump drive 3 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 on its end facing away from the first arm 9 or the joint 11 by a bolt 14 in a housing 13.
- the holder 13 is screwed tightly to the base plate 5.
- the second arm 10 is thus mounted stationarily in relation to the selector 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 support 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.
- Double lever i. the second operating lever 22 and the first arm 9 of the articulated lever 8 are connected in a line, wherein the switching shaft 2 is arranged between the two levers.
- the articulated lever 8 is movable from a first end position, shown in FIG. 2, in which it is bent over an extended position shown in FIG. 3 into a second end position, shown in FIG. 4, in which it is also bent, and vice versa.
- the fixation of the two end positions shown in Figures 2 and 4 can be effected by not shown stops, which are arranged on the shift shaft 2.
- the lengths of the first arm 9, the lengths of the first and second partial arm 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 extended position shown in FIG of the articulated lever 8 between the first partial arm 10a and the second partial arm 10b enough space for the compressed compression springs 15a, 15b is present.
- the articulated lever 8 is in a first end position.
- the two arms 9, 10 of the rocker arm 8 are tilted to each other. If an operator manually moves the control lever 6, the control shaft 2 is rotated counterclockwise via the first actuating lever 21 and the second actuating lever 22 and the rocker arm 8 is moved from its end position shown in FIG. 2 into an extended position shown in FIG Rocker 8 is fully extended. During this movement, 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.
- Switching shaft 2 jump in the counterclockwise direction to the end position shown in FIG 4 and thereby ensure a fast switching operation on the cam switching elements of the switching device 1.
- the spring force is dimensioned such that it reaches a required for switching the contacts of the switching device 1 switching force .
- a movement of the kick lever in the reverse direction i. from the end position shown in FIG 4 in the end position shown in Figure 2, a switch-on of the switching device is possible in the same way.
- 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.
- 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)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010277675A AU2010277675B2 (en) | 2009-07-31 | 2010-07-26 | Electric switchgear having a snap-action drive |
ES10740194.5T ES2560286T3 (en) | 2009-07-31 | 2010-07-26 | Electric switching device with a spring-loaded mechanism |
KR1020127002609A KR101375478B1 (en) | 2009-07-31 | 2010-07-26 | Electric switchgear having a snap-action drive |
EP10740194.5A EP2460167B1 (en) | 2009-07-31 | 2010-07-26 | Electric switchgear having a snap-action drive |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009035855.2 | 2009-07-31 | ||
DE102009035855A DE102009035855B4 (en) | 2009-07-31 | 2009-07-31 | Electrical switching device with a jump drive |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011012564A1 true WO2011012564A1 (en) | 2011-02-03 |
Family
ID=43242761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/060771 WO2011012564A1 (en) | 2009-07-31 | 2010-07-26 | Electric switchgear having a snap-action drive |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2460167B1 (en) |
KR (1) | KR101375478B1 (en) |
AU (1) | AU2010277675B2 (en) |
DE (1) | DE102009035855B4 (en) |
ES (1) | ES2560286T3 (en) |
WO (1) | WO2011012564A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2850761C3 (en) | 1978-11-23 | 1981-12-24 | Felten & Guilleaume GmbH, 5000 Köln | Jump drive device for electrical switchgear |
EP0696039A1 (en) * | 1994-08-01 | 1996-02-07 | Schneider Electric Sa | Circuit breaker mechanism provided with an energy accumulator with a damping stop |
EP1535791A1 (en) * | 2003-11-26 | 2005-06-01 | Pfisterer S.r.l. | Device for actuating on-load disconnectors for power lines, particularly for railroad power lines |
DE102006008338B3 (en) * | 2006-02-23 | 2007-02-15 | Maschinenfabrik Reinhausen Gmbh | Load-tap changer with power storage spring e.g., for variable transformers, has power storage spring as pressure spring supported on end by fixed spring abutment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3701216A1 (en) * | 1987-01-17 | 1988-07-28 | Sachsenwerk Ag | UNIVERSAL DRIVE |
US6069544A (en) * | 1998-10-22 | 2000-05-30 | General Electric Company | Circuit breaker operating mechanism having a collapsible contact arm linkage assembly |
DE19910172B4 (en) * | 1999-02-24 | 2006-07-06 | Siemens Ag | Circuit breaker with current-limiting opening of switching contacts |
DE19925537C2 (en) * | 1999-06-04 | 2002-01-03 | Felten & Guilleaume Ag | Jump drive for electrical switching devices |
-
2009
- 2009-07-31 DE DE102009035855A patent/DE102009035855B4/en not_active Expired - Fee Related
-
2010
- 2010-07-26 EP EP10740194.5A patent/EP2460167B1/en active Active
- 2010-07-26 KR KR1020127002609A patent/KR101375478B1/en active IP Right Grant
- 2010-07-26 ES ES10740194.5T patent/ES2560286T3/en active Active
- 2010-07-26 AU AU2010277675A patent/AU2010277675B2/en not_active Ceased
- 2010-07-26 WO PCT/EP2010/060771 patent/WO2011012564A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2850761C3 (en) | 1978-11-23 | 1981-12-24 | Felten & Guilleaume GmbH, 5000 Köln | Jump drive device for electrical switchgear |
EP0696039A1 (en) * | 1994-08-01 | 1996-02-07 | Schneider Electric Sa | Circuit breaker mechanism provided with an energy accumulator with a damping stop |
EP1535791A1 (en) * | 2003-11-26 | 2005-06-01 | Pfisterer S.r.l. | Device for actuating on-load disconnectors for power lines, particularly for railroad power lines |
DE102006008338B3 (en) * | 2006-02-23 | 2007-02-15 | Maschinenfabrik Reinhausen Gmbh | Load-tap changer with power storage spring e.g., for variable transformers, has power storage spring as pressure spring supported on end by fixed spring abutment |
Also Published As
Publication number | Publication date |
---|---|
EP2460167A1 (en) | 2012-06-06 |
DE102009035855A1 (en) | 2011-02-10 |
DE102009035855B4 (en) | 2011-12-08 |
EP2460167B1 (en) | 2015-12-23 |
KR101375478B1 (en) | 2014-03-18 |
AU2010277675B2 (en) | 2013-09-19 |
AU2010277675A1 (en) | 2012-02-23 |
ES2560286T3 (en) | 2016-02-18 |
KR20120031233A (en) | 2012-03-30 |
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