EP3067910B1 - Dispositif de commutation electrique comprenant un dispositif de verrouillage mecanique pour les reglages de commutation de commutateurs - Google Patents

Dispositif de commutation electrique comprenant un dispositif de verrouillage mecanique pour les reglages de commutation de commutateurs Download PDF

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Publication number
EP3067910B1
EP3067910B1 EP16154380.6A EP16154380A EP3067910B1 EP 3067910 B1 EP3067910 B1 EP 3067910B1 EP 16154380 A EP16154380 A EP 16154380A EP 3067910 B1 EP3067910 B1 EP 3067910B1
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EP
European Patent Office
Prior art keywords
switch
blocking
blocking means
switching
turning
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EP16154380.6A
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German (de)
English (en)
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EP3067910A1 (fr
Inventor
Hans-Jürgen Mader
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Eaton Intelligent Power Ltd
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Eaton Intelligent Power Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H01H9/262—Interlocking, locking, or latching mechanisms for interlocking two or more switches using flexible transmission elements, e.g. Bowden cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • H01H2071/565—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel using a add on unit, e.g. a separate rotary actuator unit, mounted on lever actuated circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel

Definitions

  • the invention relates to an electrical switching device with a mechanical locking device for the switching positions of switches.
  • Object of the present invention is therefore to propose an electrical switching device with a mechanical locking device for the switching positions of switches, which is particularly suitable in the industrial sector for the circuit of the power supply of production machines.
  • the invention proposes to provide a mechanical connection between the drive units of the switching mechanisms of the switches in two switches, which are operated by manual drives, which prevents the required disallowed switch positions and in particular also switching operations.
  • the invention proposes a mechanical locking device for the switching positions of rotary handles manually operable switch, which ensures that this special switching sequence can be met.
  • this can be provided locking means which are coupled together via a power transmission device.
  • the blocking means may in this case be designed such that they enable a switching on of a second switch only when the first switch is switched on, and only enable a switching off of the first switch when the second switch is switched off.
  • the locking means block each other via the power transmission device such that in certain switching positions of a switch, the switching of the other switch is locked, in such a way that although both switches can be turned on, the switching on and off of a switch, however, depending on the Position of the other switch can be done.
  • An embodiment of the invention relates to an electrical switching device with a mechanical locking device for the switching positions of switches with a first switch and a second switch whose switching mechanisms via respective rotary handles between a first and a second switching position ON and OFF can be actuated and each having locking means for blocking an actuation of their respective switching mechanism, a power transmission device which couples the locking means of the two switches together, wherein the locking means of the first switch are formed in that in the first switching position ON they lock an actuation of the switching mechanism and in the second switching position OFF release an actuation of the switching mechanism, and the blocking means of the second switch are designed such that they release an actuation of the switching mechanism in the first switching position ON and the second OFF position to inhibit an actuation of the switching mechanism, wherein the locking means of the first switch in the second switching position OFF via the power transmission device, the locking means of the second switch in the second switching position OFF in a position hal in which they lock an actuation of the switching mechanism of the second switch, and the locking means of the first switch
  • the locking means may comprise a locking disc coupled to a switching axis of the rotary handle and a transmission lever mounted pivotably about an axis and having a locking pin, wherein the transmission lever can be pressed by the power transmission device against the locking disc such that the locking pin engage in a recess in the locking disc and thereby can block rotation of the rotary handle.
  • the transmission lever of the locking means of the first switch can be pivoted to a position in which Rotation of the rotary handle of the first switch is released and pivoted via the power transmission device, the transmission lever of the locking means of the second switch in a position in which the locking pin of the locking means of the second switch engages in the recess of the locking disc, so that locked rotation of the rotary handle of the second switch is.
  • This ensures that an actuation of the rotary handle of the second switch is locked and thus the rotary handle of the second switch can not be brought into the second switching position ON, when the rotary handle of the first switch is in the second switching position OFF.
  • the locking pin of the locking means of the first switch at least partially engage in the recess of the locking disc, so that on the power transmission device almost no force on the transmission lever Locking means of the second switch is exercised and the transmission lever of the locking means of the second switch is pivoted by a spring into a position in which the locking pin out of the recess of the locking disc of the locking means of the second switch, so that a rotation of the rotary handle of the second switch released is.
  • the transmission lever of the locking means of the second switch can be pivoted to a position in which a rotation of the rotary handle of the second switch is released and via the power transmission device, the transmission lever of the locking means of the first switch in a position is pivoted, in which the locking pin of the locking means of the first switch engages in the recess of the locking disc, so that rotation of the rotary handle of the first switch is locked.
  • This ensures that the rotary handle of the first switch can not be brought into the switching position OFF, as long as the rotary handle of the second switch is in the switching position ON. In other words, it is thus prevented that the first switch is switched before the second switch can by turning the rotary handle of the first switch from the switching position ON in the switching position OFF.
  • the power transmission device may comprise a Bowden cable, the ends of which are each secured to respective brackets of the transmission lever.
  • a Bowden cable has the advantage that it is flexible and therefore less restricting an arrangement of the first and second switches, for example, in a control cabinet than a rigid power transmission device by means of, for example, a lever mechanism.
  • the rotary handle of the first switch and / or the rotary handle of the second switch can be locked in the second switching position OFF, in particular has eyelets for locking by U-locks. As a result, it can be effectively prevented that a turning handle of a switch is turned from the second switching position OFF to the first switching position ON.
  • the first switch may be a load disconnector designed for powering a process controller
  • the second switch may be a load disconnect switch designed for powering a production machine.
  • the switching device according to the invention is particularly suitable for use in the industrial sector, in particular for the circuit of the power supply of a production machine.
  • the electrical switching device allows the use of two manually operated switch-disconnectors, taking into account the required switching positions and switching sequences.
  • the arrangement of two switchgear of the same or different size finds its application in the industrial sector with the aim of ensuring and controlling the power supply and control of the production machines in all situations.
  • the power supply for the process control should be independently and separately switchable by the power supply of the production machines by the arrangement.
  • a first switch-disconnector 10 is provided for the process control of all production machines (control line switch).
  • a parallel arranged second load breaker 12 is provided for the power supply of the production machines, such as welding and painting robots, transport and carriers, (power line switch).
  • the second switch 12 switches the voltage supply of the production machines via a power line 38, for example a 400 A N3 line.
  • the first switch 10 switches the power supply of the process control via a control line 40, For example, a 63 A PN1 line (optional, the power can also be supplied via an uninterruptible power supply UPS, or by a mains voltage supply, as in Fig. 1 is indicated by the branch from the power line 38 to the control line 40).
  • Both switches 10 and 12 each have knobs 14 and 16 for manually switching on or off the switches 10 and 12, respectively.
  • a rotary drive 34 and 36 of the switching mechanism of the respective switch 10 and 12 is actuated via a switching axis to operate the switching mechanisms between a first and a second switching position ON or OFF and the power supply via the switch switch on or off.
  • rotary actuators 34 and 36 respectively mechanical locks in the form of locking means 18 and 20 are arranged, which - as will be described in detail below - lock or unlock an operation of the switching mechanism of the respective switch on the knobs and rotary actuators, depending on the Switching position of the other switch, which uses a Bowden cable 32, which serves as a power transmission device between the two switches 10 and 12, "signaled" in terms of power.
  • the essential requirements with regard to the switching sequences and switching positions are that the power line switch 12 can only be switched on when the control line switch 10 is in the switching position ON. Furthermore, it must not be possible to switch off the control line switch 12 as long as the power line switch 10 is still switched on.
  • the requirements must be met mechanically in compliance with the device regulations.
  • the operational requirements can be met by the use of existing switches and assemblies (manual drives, mechanical interlock) and the use of a special mechanical interlock for the control line switch 10. This is connected via the Bowden cable 32 with the mechanical locking of the power line switch 12.
  • Both mechanical interlocks 18, 20 are in operative connection with one another via the Bowden cable 32 and control or lock the switches or switching devices 10, 12 for the required operating conditions.
  • the locking means or mechanical locks 18, 20 have in the in the Fig. 2-3 shown embodiment, in each case one coupled to a switching axis of the rotary handle locking disc 24 and 26 and a pivotably mounted about an axis transmission lever 30 which has approximately centrally a locking pin 28 which bears against the edge of the respective 24 and 26 locking disc.
  • a caused by a rotation of the rotary handle 14 and 16 corresponding rotation of the locking disc 24 and 26 causes by the design of the locking disc 24 and 26, a corresponding pivoting of the transmission lever 30 through the locking pin.
  • the locking discs 25 and 26 also have recesses 32 into which the locking pin 28 of the transmission lever 30 engage with a corresponding pivoting of the transmission lever 30 and position of the respective locking disc 24 and 26 and thereby block rotation of the corresponding rotary handle 14 and 16 respectively.
  • the transmission levers 30 are each mounted at one end on a pivot axis 31 and each have at their other end a holder 23 for the attachment of one end of the Bowden cable 22. As a result, the pivoting of the two transmission levers 30 is coupled via the Bowden cable.
  • Fig. 2 shows the starting position of the two switching devices 10 and 12, in which both switching devices are in the switching position OFF.
  • this switching position of the operation of the handle 16 of the power line switch 12 is blocked by the immersed in the recess 32 of the locking disc 26 locking pin 28.
  • the blocking position in the mechanical lock 20 of the power line switch 12 is achieved by the approached in the mechanical lock 18 of the control line switch 10 locking pin 28 and drawn over the twisted transmission lever 30 Bowden cable 22. This transmits the movement to the transmission lever 30 of the mechanical lock 20 of the power line switch 12 and brings the locking pin 28 in the locked position. In this position, only the switching on of the control line switch 10 is possible. An activation of the power line Switch 12 is not possible.
  • Fig. 3 shows a position in which the control line switch 10 is turned on, and the power line switch 12 is still in the switching position OFF.
  • the transmission lever 30 and the locking pins 28 are based on the locking discs 24 and 26 and their recesses 32 in an intermediate position in which both switches 10 and 12 are actuated.
  • the control line switch 10 can be turned off again, or the power line switch 12 can be turned on.
  • the handle 16 of the power line switch 12 can be completed with a padlock.
  • the handle 14 of the control line switch 14 can not be completed in the switching position ON.
  • Fig. 4 now shows a position in which the power line switch 12 is turned on, and the control line switch 10 is also in the switching position ON.
  • the Bowden cable 22 is pulled by the locking disc 26, the locking pin 28 and the transmission lever 30.
  • the locking pin 28 of the mechanical lock 18 of the control line switch 10 is pulled into the recess 32 in the locking disc 24 and now blocks any attempt to switch on the control line switch 10. Turning off the control line switch 10 without switching off the power line switch 12 is not possible.
  • the invention is particularly suitable for MCCB's (Molded Case Circuit Breaker) derived Lastrennschalter, which are mainly intended for industrial use, as the N u. PN Switch Disconnectors from Eaton Corp.
  • MCCB's Molded Case Circuit Breaker
  • Lastrennschalter which are mainly intended for industrial use, as the N u. PN Switch Disconnectors from Eaton Corp.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (9)

  1. Dispositif de commutation électrique comprenant un dispositif de verrouillage mécanique pour les réglages de commutation de commutateurs avec
    un premier commutateur (10) et un second commutateur (12), dont les mécanismes de commutation peuvent être actionnés par le biais de poignées tournantes (14, 16) respectives entre un premier et un second réglage de commutation MARCHE ou ARRÊT et qui présentent respectivement des moyens de blocage (18, 20) pour le blocage d'un actionnement de leur mécanisme de commutation respectif,
    un dispositif de transmission de force (22) qui accouple les moyens de blocage des deux commutateurs entre eux,
    dans lequel les moyens de blocage (18) du premier commutateur (10) sont réalisés de telle manière qu'ils bloquent un actionnement du mécanisme de commutation dans le premier réglage de commutation MARCHE et permettent un actionnement du mécanisme de commutation dans le second réglage de commutation ARRÊT, et les moyens de blocage (20) du second commutateur (12) sont réalisés de telle manière qu'ils permettent un actionnement du mécanisme de commutation dans le premier réglage de commutation MARCHE et bloquent un actionnement du mécanisme de commutation dans le second réglage de commutation ARRÊT,
    caractérisé en ce que
    les moyens de blocage (18) du premier commutateur (10) dans le second réglage de commutation ARRÊT maintiennent par le biais du dispositif de transmission de force (22) les moyens de blocage (20) du second commutateur (12) dans le second réglage de commutation ARRÊT dans une position dans laquelle ils bloquent un actionnement du mécanisme de commutation du second commutateur (12), et les moyens de blocage (18) du premier commutateur (10) dans le premier réglage de commutation MARCHE libèrent par le biais du dispositif de transmission de force (22) les moyens de blocage (20) du second commutateur (12) dans le second réglage de commutation ARRÊT, et
    dans lequel les moyens de blocage (20) du second commutateur (12) dans le premier réglage de commutation MARCHE maintiennent par le biais du dispositif de transmission de force (22) les moyens de blocage (18) du premier commutateur (10) dans le premier réglage de commutation MARCHE dans une position dans laquelle ils bloquent un actionnement du mécanisme de commutation du premier commutateur (10), et les moyens de blocage (20) du second commutateur (12) dans le second réglage de commutation ARRÊT libèrent par le biais du dispositif de transmission de force (22) les moyens de blocage (18) du premier commutateur (10) dans le premier réglage de commutation MARCHE.
  2. Dispositif de commutation selon la revendication 1,
    caractérisé en ce que
    les moyens de blocage comportent un disque de blocage (24, 26) accouplé à un axe de commutation (17) de la poignée tournante (14, 16) et un levier de transmission (30) présentant une tige de blocage (28) et logé de manière pivotante autour d'un axe, dans lequel le levier de transmission (30) peut être pressé par le dispositif de transmission de force (22) contre le disque de blocage (24, 26) de telle manière que la tige de blocage (28) puisse s'engager dans un évidement (32) dans le disque de blocage (24, 26) et bloquer ainsi une rotation de la poignée tournante (14, 16).
  3. Dispositif de commutation selon la revendication 2,
    caractérisé en ce que
    dans le second réglage de commutation ARRÊT des poignées tournantes (14, 16) du premier et second commutateur (10, 12) le levier de transmission (30) des moyens de blocage (18) du premier commutateur (10) est pivoté dans une position dans laquelle une rotation de la poignée tournante (14) du premier commutateur (10) est libérée et le levier de transmission (30) des moyens de blocage (20) du second commutateur (12) est pivoté dans une position par le biais du dispositif de transmission de force (22), dans laquelle la tige de blocage (28) des moyens de blocage (20) du second commutateur (12) s'engage dans l'évidement (32) du disque de blocage (26) de sorte qu'une rotation de la poignée tournante (16) du second commutateur (12) soit bloquée.
  4. Dispositif de commutation selon la revendication 2 ou 3,
    caractérisé en ce que
    dans le premier réglage de commutation MARCHE de la poignée tournante (14) du premier commutateur (10) et dans le second réglage de commutation ARRÊT de la poignée tournante (16) du second commutateur (12) la tige de blocage (28) des moyens de blocage (18) du premier commutateur (12) s'engage au moins partiellement dans l'évidement (32) du disque de blocage (24) de sorte que par le biais du dispositif de transmission de force (22) presque aucune force ne soit exercée sur le levier de transmission (30) des moyens de blocage (20) du second commutateur (12) et le levier de transmission (30) des moyens de blocage (20) du second commutateur (12) soit pivoté par un ressort dans une position dans laquelle la tige de blocage (28) est guidée hors de l'évidement (32) du disque de blocage (26) des moyens de blocage (20) du second commutateur (12) de sorte qu'une rotation de la poignée tournante (16) du second commutateur (12) soit libérée.
  5. Dispositif de commutation selon la revendication 2, 3 ou 4,
    caractérisé en ce que
    dans le premier réglage de commutation MARCHE des poignées tournantes (14, 16) du premier et second commutateur (10, 12) le levier de transmission (30) des moyens de blocage (20) du second commutateur (12) est pivoté dans une position dans laquelle une rotation de la poignée tournante (16) du second commutateur (12) est libérée et le levier de transmission (30) des moyens de blocage (18) du premier commutateur (10) est pivoté dans une position par le biais du dispositif de transmission de force (22), dans laquelle la tige de blocage (28) des moyens de blocage (18) du premier commutateur (10) s'engage dans l'évidement (32) du disque de blocage (24) de sorte qu'une rotation de la poignée tournante (14) du premier commutateur (10) soit bloquée.
  6. Dispositif de commutation selon l'une quelconque des revendications 2 à 5,
    caractérisé en ce que
    le dispositif de transmission de force présente un câble Bowden (22) dont les extrémités sont respectivement fixées sur des supports (23) correspondants des leviers de transmission (30).
  7. Dispositif de commutation selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    la poignée tournante (14) du premier commutateur (10) et/ou la poignée tournante (16) du second commutateur (12) peut être arrêtée dans le second réglage de commutation ARRÊT, en particulier présente des oeillets pour l'arrêt par des étriers de raccordement.
  8. Dispositif de commutation selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    le premier commutateur (10) est un sectionneur de charge conçu pour l'alimentation en tension (40) d'une commande de processus et le second commutateur (12) est un sectionneur de charge conçu pour l'alimentation en tension (38) d'une machine de production.
  9. Utilisation d'un dispositif de commutation selon l'une quelconque des revendications précédentes dans le domaine industriel, en particulier pour le circuit de l'alimentation en tension d'une machine de production.
EP16154380.6A 2015-03-13 2016-02-05 Dispositif de commutation electrique comprenant un dispositif de verrouillage mecanique pour les reglages de commutation de commutateurs Active EP3067910B1 (fr)

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EP3067910B1 true EP3067910B1 (fr) 2018-04-04

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19733720A1 (de) 1997-08-04 1999-02-11 Kloeckner Moeller Gmbh Verriegelungsvorrichtung für Schaltgeräte
DE10058420A1 (de) * 2000-11-24 2002-05-29 Moeller Gmbh Verriegelungsvorrichtung für eine elektrische Schalteinrichtung

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