EP2242891A1 - Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector - Google Patents

Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector

Info

Publication number
EP2242891A1
EP2242891A1 EP09787637A EP09787637A EP2242891A1 EP 2242891 A1 EP2242891 A1 EP 2242891A1 EP 09787637 A EP09787637 A EP 09787637A EP 09787637 A EP09787637 A EP 09787637A EP 2242891 A1 EP2242891 A1 EP 2242891A1
Authority
EP
European Patent Office
Prior art keywords
detent
actuation shaft
configuration
locking
translational motion
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
EP09787637A
Other languages
German (de)
French (fr)
Other versions
EP2242891B1 (en
Inventor
Dario Bergamo
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.)
General Electric Technology GmbH
Original Assignee
Areva T&D Italy SpA
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 Areva T&D Italy SpA filed Critical Areva T&D Italy SpA
Publication of EP2242891A1 publication Critical patent/EP2242891A1/en
Application granted granted Critical
Publication of EP2242891B1 publication Critical patent/EP2242891B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0657—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like
    • E05B47/0665—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially
    • E05B47/0673—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially with a rectilinearly moveable blocking element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0084—Key or electric means; Emergency release
    • E05B2047/0086—Emergency release, e.g. key or electromagnet

Definitions

  • the present invention relates to an electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electric disconnector.
  • the locking assembly of an actuation shaft comprises a detent which interlocks with the actuation shaft, locked by a protrusion that can perform a translational motion into a release position by way of the action of an electromagnet.
  • the protrusion When the electromagnet is supplied with power, the protrusion is moved and frees the movement of the detent, which can be disengaged from the shaft in order to turn it.
  • This electromagnet of course has to be customized for each operating voltage, be it AC or DC, and requires a supporting terminal strip so that it can be wired and connected to the power supply and control system. Disclosure of the Invention
  • the aim of the present invention is to provide an electromechanical locking/release device that is more flexible in use, since it does not require adaptations according to the voltage available for its power supply.
  • an object of the invention is to provide an electromechanical locking/release device which allows, for its production, the use of generic commercial components that are currently easily commercially available.
  • Another object of the invention is to provide an electromechanical locking/release device that allows reliable confirmation of its operating configuration.
  • Another object of the invention is to provide an electromechanical locking/release device that is structurally simple and easy to use and can be manufactured with relatively low costs.
  • an electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft particularly of an electrical disconnector, comprising a detent for locking the rotation of said shaft which can perform a translational motion with respect to said shaft in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with elastic means, to release its rotation
  • a detent for locking the rotation of said shaft which can perform a translational motion with respect to said shaft in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with elastic means, to release its rotation
  • it comprises an electrical contactor with a movable element, which is coupled in a cam-like arrangement to said detent and is adapted to be arranged, with respect to said detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of said detent from said actuation shaft, in order to prevent or release its rotation.
  • Figure 1 is a partially sectional perspective view of an electromechanical locking/release device according to the invention
  • Figure 2 is a partially sectional front elevation view of an electromechanical locking/release device according to the invention.
  • Figure 3 is a sectional view, taken along the line III-III of Figure 2, of an electromechanical locking/release device according to the invention. Ways of carrying out the Invention
  • the reference numeral 10 generally designates an electromechanical device for locking/releasing a mechanism 11 for manual operation of an actuation shaft 12, particularly of an electrical disconnector, which comprises a detent 13 for locking the rotation of the actuation shaft 12, which can perform a translational motion with respect to it in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with a return spring 14, so as to free its rotation.
  • the return spring 14 can be replaced with elastic means that are adapted to apply equivalently a force for the elastic return of the detent 13 toward the actuation shaft 12 in order to lock it.
  • a particularity of the electromechanical locking/release device 10 according to the invention is that it comprises an electrical contactor 15 with a movable element 16, which is coupled in a cam-like arrangement to the detent 13 and is adapted to be arranged, with respect to said detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of the detent 13 from the actuation shaft 12, in order to prevent or release its rotation.
  • the electrical contactor 15 is advantageously a relay provided with an emergency mechanical operation device, which is per se known and not shown in the accompanying figures and can be operated to manually arrange the movable element 16 in the enabling configuration in contrast with elastic means for return to the preventing configuration.
  • the movable element 16 comprises a protrusion 17 that is coupled in a cam-like arrangement in a slot 18 provided in the detent 13.
  • the slot 18 conveniently has - a first portion 19, which lies substantially longitudinally to the direction of translational motion A for interlocking and releasing the detent 13 with respect to the actuation shaft 12, and
  • the protrusion 17 engages slidingly the first portion 19, so as to allow the translational motion of the detent 13 along the direction of translational motion A.
  • the protrusion 17 engages the second portion 20 in contrast with the translational motion of the detent 13 along the direction of translational motion A.
  • the first portion 19 conveniently has an inclined wall 21 that is adapted to guide the protrusion 17, during the translational motion for disengagement of the detent 13 from the actuation shaft 12, into a position for maintaining the enabling configuration when the detent 13 is disengaged from the actuation shaft 12.
  • FIG. 2 shows in broken lines the detent 13 disengaged from the shaft 12, with the protrusion 17 engaging the first portion 19 of the slot 18, correspondingly with respect to the enabling configuration of the movable element 16.
  • the manual operation mechanism 11 comprises a plate 22 for supporting the actuation shaft 12, which further supports slidingly the detent 13.
  • a flange 23 extends from the actuation shaft 12 and has at least one interlocking seat 24 for a tooth 25, with which the detent 13 is provided, in order to interlock with the actuation shaft 12.
  • the electrical contactor 15 is fixed to the supporting plate 22 by means of an elastic clip 26, which during use retains it so that the protrusion 17 is coupled in a cam-like arrangement in the slot 18.
  • the electrical contactor 15 is conveniently functionally connected to a control and monitoring device 27, which actuates it remotely, forcing the passage of its movable element 16 from the preventing configuration to the enabling configuration in order to allow the disengagement of the detent 13 from the actuation shaft 12 and therefore the rotation of said shaft.
  • the electrical contact provided in the electrical contactor 15 when its movable element 16 is in the enabling configuration allows to transmit to the control and monitoring device 27 a signal that confirms the state of freedom of manual disengagement of the detent 13 from the actuation shaft 12 and thus reports the freedom of said shaft to rotate manually.
  • the operation of the electromechanical locking/release device 10 according to the invention is as follows.
  • the detent 13 is interlocked with the actuation shaft 12, with the tooth 25 engaged with the seat 24 of the flange 23.
  • the movable element 16 is in the preventing configuration and therefore has the protrusion 17 that engages the second portion 20 of the slot 18, so as to prevent the translational motion of the detent 13 in the direction of translational motion A.
  • the detent 13 is allowed to perform a translational motion, by way of an electrical command on the part of the control and monitoring device 27, which for example is operated by an operator from a control room.
  • the movable element 16 moves to the enabling configuration, thus having the protrusion shifted into the first portion 19 of the slot 18.
  • the invention achieves the intended aim and objects, providing an electromechanical locking/release device that is more flexible in use, since it does not require adaptations as a function of the voltage available for its power supply, since it uses a relay of the commercial type whose operation does not depend on the available voltages.
  • An electromechanical locking/release device further allows reliable confirmation of its operating configuration.
  • the invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
  • the materials used may be any according to requirements and to the state of the art.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

An electromechanical device (10) for locking/releasing a mechanism (11) for the manual operation of an actuation shaft (12), particularly of an electrical disconnector, comprising - a detent (13) for locking the rotation of the actuation shaft (12) which can perform a translational motion with respect to the shaft in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with a return spring (14), to release its rotation, - an electrical contactor (15) with a movable element (16), which is coupled in a cam-like arrangement to the detent (13) and is adapted to be arranged, with respect to the detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of the detent (13) from the actuation shaft (12), in order to prevent or release its rotation.

Description

ELECTROMECHANICAL DEVICE FOR LOCKING/RELEASING A MECHANISM FOR THE MANUAL OPERATION OF AN ACTUATION SHAFT, PARTICULARLY OF AN ELECTRICAL DISCONNECTOR Technical field The present invention relates to an electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electric disconnector. Background Art
Currently, the locking assembly of an actuation shaft comprises a detent which interlocks with the actuation shaft, locked by a protrusion that can perform a translational motion into a release position by way of the action of an electromagnet.
When the electromagnet is not powered, the protrusion is kept in the detent locking position by a return spring and therefore the actuation shaft cannot be turned.
When the electromagnet is supplied with power, the protrusion is moved and frees the movement of the detent, which can be disengaged from the shaft in order to turn it.
This electromagnet of course has to be customized for each operating voltage, be it AC or DC, and requires a supporting terminal strip so that it can be wired and connected to the power supply and control system. Disclosure of the Invention
The aim of the present invention is to provide an electromechanical locking/release device that is more flexible in use, since it does not require adaptations according to the voltage available for its power supply.
Within this aim, an object of the invention is to provide an electromechanical locking/release device which allows, for its production, the use of generic commercial components that are currently easily commercially available. Another object of the invention is to provide an electromechanical locking/release device that allows reliable confirmation of its operating configuration.
Another object of the invention is to provide an electromechanical locking/release device that is structurally simple and easy to use and can be manufactured with relatively low costs.
This aim and these and other objects, that will become better apparent hereinafter, are achieved by an electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector, comprising a detent for locking the rotation of said shaft which can perform a translational motion with respect to said shaft in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with elastic means, to release its rotation, characterized in that it comprises an electrical contactor with a movable element, which is coupled in a cam-like arrangement to said detent and is adapted to be arranged, with respect to said detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of said detent from said actuation shaft, in order to prevent or release its rotation. Brief description of the drawings Further characteristics and advantages of the invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment of the electromechanical locking/release device according to the invention, illustrated by way of non-limiting example in the accompanying drawings, wherein: Figure 1 is a partially sectional perspective view of an electromechanical locking/release device according to the invention;
Figure 2 is a partially sectional front elevation view of an electromechanical locking/release device according to the invention;
Figure 3 is a sectional view, taken along the line III-III of Figure 2, of an electromechanical locking/release device according to the invention. Ways of carrying out the Invention
It is noted that anything found to be already known during the patenting process is understood not to be claimed and to be the subject of a disclaimer. With reference to the figures, the reference numeral 10 generally designates an electromechanical device for locking/releasing a mechanism 11 for manual operation of an actuation shaft 12, particularly of an electrical disconnector, which comprises a detent 13 for locking the rotation of the actuation shaft 12, which can perform a translational motion with respect to it in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with a return spring 14, so as to free its rotation.
In general, the return spring 14 can be replaced with elastic means that are adapted to apply equivalently a force for the elastic return of the detent 13 toward the actuation shaft 12 in order to lock it. A particularity of the electromechanical locking/release device 10 according to the invention is that it comprises an electrical contactor 15 with a movable element 16, which is coupled in a cam-like arrangement to the detent 13 and is adapted to be arranged, with respect to said detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of the detent 13 from the actuation shaft 12, in order to prevent or release its rotation.
The electrical contactor 15 is advantageously a relay provided with an emergency mechanical operation device, which is per se known and not shown in the accompanying figures and can be operated to manually arrange the movable element 16 in the enabling configuration in contrast with elastic means for return to the preventing configuration.
More particularly, preferably the movable element 16 comprises a protrusion 17 that is coupled in a cam-like arrangement in a slot 18 provided in the detent 13. The slot 18 conveniently has - a first portion 19, which lies substantially longitudinally to the direction of translational motion A for interlocking and releasing the detent 13 with respect to the actuation shaft 12, and
- a second portion 20, which lies substantially transversely to the direction of translational motion A.
In said enabling configuration, the protrusion 17 engages slidingly the first portion 19, so as to allow the translational motion of the detent 13 along the direction of translational motion A.
In said preventing configuration, instead, the protrusion 17 engages the second portion 20 in contrast with the translational motion of the detent 13 along the direction of translational motion A.
Further, the first portion 19 conveniently has an inclined wall 21 that is adapted to guide the protrusion 17, during the translational motion for disengagement of the detent 13 from the actuation shaft 12, into a position for maintaining the enabling configuration when the detent 13 is disengaged from the actuation shaft 12.
With particular reference to Figure 2, it shows in broken lines the detent 13 disengaged from the shaft 12, with the protrusion 17 engaging the first portion 19 of the slot 18, correspondingly with respect to the enabling configuration of the movable element 16.
Conveniently, the manual operation mechanism 11 comprises a plate 22 for supporting the actuation shaft 12, which further supports slidingly the detent 13.
A flange 23 extends from the actuation shaft 12 and has at least one interlocking seat 24 for a tooth 25, with which the detent 13 is provided, in order to interlock with the actuation shaft 12.
The electrical contactor 15 is fixed to the supporting plate 22 by means of an elastic clip 26, which during use retains it so that the protrusion 17 is coupled in a cam-like arrangement in the slot 18. The electrical contactor 15 is conveniently functionally connected to a control and monitoring device 27, which actuates it remotely, forcing the passage of its movable element 16 from the preventing configuration to the enabling configuration in order to allow the disengagement of the detent 13 from the actuation shaft 12 and therefore the rotation of said shaft. Further, in this manner, the electrical contact provided in the electrical contactor 15 when its movable element 16 is in the enabling configuration allows to transmit to the control and monitoring device 27 a signal that confirms the state of freedom of manual disengagement of the detent 13 from the actuation shaft 12 and thus reports the freedom of said shaft to rotate manually.
The operation of the electromechanical locking/release device 10 according to the invention is as follows.
In an inactive operating condition, the detent 13 is interlocked with the actuation shaft 12, with the tooth 25 engaged with the seat 24 of the flange 23.
The movable element 16 is in the preventing configuration and therefore has the protrusion 17 that engages the second portion 20 of the slot 18, so as to prevent the translational motion of the detent 13 in the direction of translational motion A. In order to turn the actuation shaft 12, the detent 13 is allowed to perform a translational motion, by way of an electrical command on the part of the control and monitoring device 27, which for example is operated by an operator from a control room.
In this case, the movable element 16 moves to the enabling configuration, thus having the protrusion shifted into the first portion 19 of the slot 18.
In this configuration, it is possible to produce the translational motion of the detent 13 along the direction of translational motion A, so as to disengage its tooth 25 from the seat 24 of the flange 23, freeing the rotation of the actuation shaft 12. The inclined wall 21, during the translational motion for disengagement of the detent 13 from the shaft 12, guides the protrusion 17 along the first portion 19 of the slot 18, so that the movable element 16 maintains the enabling configuration and provides the corresponding electrical contact, which by means of the control and monitoring device 27 allows to confirm its operating condition remotely.
In practice it has been found that the invention achieves the intended aim and objects, providing an electromechanical locking/release device that is more flexible in use, since it does not require adaptations as a function of the voltage available for its power supply, since it uses a relay of the commercial type whose operation does not depend on the available voltages.
An electromechanical locking/release device, according to the invention, further allows reliable confirmation of its operating configuration. The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. An electromechanical device (10) for locking/releasing a mechanism (11) for the manual operation of an actuation shaft (12), particularly of an electrical disconnector, comprising a detent (13) for locking the rotation of said actuation shaft (12) which can perform a translational motion with respect to said shaft in order to engage therein, so as to lock its rotation, and disengage from it, in contrast with elastic return means, to release its rotation, characterized in that it comprises an electrical contactor (15) with a movable element (16), which is coupled in a cam-like arrangement to said detent (13) and is adapted to be arranged, with respect to said detent, in two alternative configurations, respectively a configuration for preventing and a configuration for enabling the disengagement of said detent (13) from said actuation shaft (12), in order to prevent or release its rotation.
2. The electromechanical locking/release device according to claim 1, characterized in that said electrical contactor (15) is a relay provided with an emergency mechanical operation device that can be operated to manually arrange said movable element (16) in said enabling configuration in contrast with elastic means for return to said preventing configuration.
3. The electromechanical locking/release device according to claim 1, characterized in that said movable element (16) comprises a protrusion (17) that is coupled in a cam-like arrangement in a slot (18) provided in said detent (13), said slot (18) having
- a first portion (19), which is extended substantially longitudinally with respect to the direction of translational motion (A) for engaging and disengaging said detent (13) from said actuation shaft (12), and
- a second portion (20), which lies substantially transversely to said direction of translational motion (A), in said enabling configuration, said protrusion (17) engaging slidingly said first portion (19), in said preventing configuration said protrusion (17) engaging said second portion (20) to contrast the translational motion of said detent (13) along said direction of translational motion (A).
4. The electromechanical locking/release device according to claim 3, characterized in that said first portion (19) has an inclined wall (21), which is adapted to guide said protrusion (17), during the translational motion for disengaging said detent (13) from said actuation shaft (12), into a position for maintaining said enabling configuration when said detent (13) is disengaged from said actuation shaft (12).
EP09787637.9A 2009-02-05 2009-02-05 Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector Active EP2242891B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2009/000032 WO2010089781A1 (en) 2009-02-05 2009-02-05 Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector

Publications (2)

Publication Number Publication Date
EP2242891A1 true EP2242891A1 (en) 2010-10-27
EP2242891B1 EP2242891B1 (en) 2015-11-25

Family

ID=41402505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09787637.9A Active EP2242891B1 (en) 2009-02-05 2009-02-05 Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector

Country Status (3)

Country Link
EP (1) EP2242891B1 (en)
CN (1) CN102007257B (en)
WO (1) WO2010089781A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102723229B (en) * 2012-06-29 2014-11-05 浙江国源电气有限公司 Manual operation mechanism of outdoor permanent magnetic high-voltage vacuum circuit breaker
EP4350730A1 (en) 2022-10-07 2024-04-10 Rte Reseau De Transport D'electricite Device for immobilising an electrical substation disconnector of an electrical network

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8534595U1 (en) * 1985-12-09 1986-01-30 Coordinate Electric Industry Co., Ltd., Chung-Ki, Tao-Yuan Combination lock that can be operated with a card
DE8705383U1 (en) * 1987-04-10 1987-08-13 Bks Gmbh, 42549 Velbert Electromagnetically lockable rotary lever
FR2746132B1 (en) * 1996-03-14 1998-06-12 DEVICE FOR ELECTRICALLY LOCKING AND UNLOCKING A LOCK MEMBER AND LOCK EQUIPPED WITH SUCH A DEVICE
US5816085A (en) 1997-04-29 1998-10-06 Emhart Inc. Remote entry knobset
ITBO20030583A1 (en) * 2003-10-10 2005-04-11 Cisa Spa ELECTRIC LOCK WITH MAGNETIC SUPPORT OF THE COUPLING ORGAN

Non-Patent Citations (1)

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Title
See references of WO2010089781A1 *

Also Published As

Publication number Publication date
WO2010089781A1 (en) 2010-08-12
CN102007257B (en) 2013-09-04
CN102007257A (en) 2011-04-06
WO2010089781A8 (en) 2010-10-28
EP2242891B1 (en) 2015-11-25

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