EP0400632A2 - Entrainement rotatif à ressort accumulé - Google Patents

Entrainement rotatif à ressort accumulé Download PDF

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Publication number
EP0400632A2
EP0400632A2 EP90110309A EP90110309A EP0400632A2 EP 0400632 A2 EP0400632 A2 EP 0400632A2 EP 90110309 A EP90110309 A EP 90110309A EP 90110309 A EP90110309 A EP 90110309A EP 0400632 A2 EP0400632 A2 EP 0400632A2
Authority
EP
European Patent Office
Prior art keywords
spring
disk
drive
rotary drive
locking member
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.)
Withdrawn
Application number
EP90110309A
Other languages
German (de)
English (en)
Other versions
EP0400632A3 (fr
Inventor
Josef Perle
Peter Dr. Völker
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.)
Gec Alsthom T & D GmbH
Original Assignee
GEC Alsthom T&D GmbH Germany
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 GEC Alsthom T&D GmbH Germany filed Critical GEC Alsthom T&D GmbH Germany
Publication of EP0400632A2 publication Critical patent/EP0400632A2/fr
Publication of EP0400632A3 publication Critical patent/EP0400632A3/fr
Withdrawn legal-status Critical Current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
    • H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth

Definitions

  • the invention relates to a spring-loaded rotary drive for electrical switching devices.
  • a spring-loaded rotary drive for electrical switching devices.
  • switch disconnectors with an earthing position provided in addition to the on and off position, consisting of a support element which can be connected to the associated switch shaft and is designed as a support shaft or hub, a locking element for the support element which interacts with detachable pawls, and a rotatably mounted on the support element Pawl acting control disk and a spring arrangement provided between a driver of the locking member and a support member connected to the control disk.
  • Such a spring-loaded rotary drive can be used, for example, with a switch disconnector of the type described in German patent application P 35 15 203.
  • Known spring-loaded actuators can generally only be actuated manually, for example by means of a plug lever. Apart from the fact that such an actuation is energy-intensive, it may be necessary in certain cases to carry out any switching operations remotely.
  • the invention has for its object to design a spring-loaded rotary drive of the type mentioned in such a way that it with little additional design effort is not only convenient and reliable, but can also be operated remotely for any switchover. Furthermore, the spring-loaded rotary drive according to the invention should remain manually operable.
  • a spring-loaded drive is to be created, in which it is reliably excluded that switch parts are exposed to excessive impact stress.
  • a motor drive is assigned to the control disk.
  • the connection between the motor drive and the control disk is preferably detachable, in particular for manual actuation of the control disk.
  • a variant that is particularly simple to construct is characterized in that the control disk is provided with a toothed ring over at least part of its circumference, which meshes with a gear of the motor drive.
  • the motor drive is only to be arranged on the circumference of the control disk, and apart from the problem-free attachment of the ring gear to the control disk, no additional structural changes to the main components of the spring-loaded rotary drive are required.
  • the uncoupling of the motor drive which is desired in particular for manual actuation, can also be implemented without any significant effort.
  • the motor drive is pivotably mounted on a fixed support plate and can be pivoted from a drive position into a rest position in which it is disengaged from the control disk.
  • the motor drive is preferably pivotable by means of an eccentric bolt arranged at one end of an actuating shaft, the actuating shaft being mounted in the fixed carrier plate at the end on the bolt side and in a fixed front plate at the other end.
  • a spring tongue can be attached to the front plate-side end of the actuating shaft, which tongue carries at the free end a pin which engages in a central opening in the drive position and in an eccentric opening in the front plate in the rest position.
  • End contacts and / or auxiliary switches associated with the electric motor drive can be fastened on the carrier plate and can be actuated in particular by the driver of the carrier element connected to the switch shaft. After the actual switch position can be detected via the driver, the signals supplied by the switches can be used for the targeted control of the motor drive.
  • a particularly advantageous embodiment of the invention is characterized in that the locking member and the carrier element connected to the switch shaft are connected to one another via a vulcanized rubber layer, that the locking member is additionally toothed with the carrier element, and that the distances between two interacting teeth of the toothing depending on the throughput the rubber layer are selected.
  • the locking member which is designed in particular as a hub, can be clamped onto the switch shaft via a guide piece arranged in an extension of the switch shaft.
  • a drive disk connected to the control disk can be rotatably mounted on the end of this guide piece opposite the switch shaft, with which a plug lever that may be used can be brought into engagement.
  • this drive disk expediently has a cylindrical extension directed towards the control disk
  • the spring arrangement in particular a torsion spring, can be arranged coaxially with this cylindrical extension.
  • control disk is toothed with the free end of the cylindrical extension connected to the drive disk, the interlocking teeth of the toothing extending parallel to the longitudinal axis of the arrangement.
  • the cylindrical extension expediently surrounds the guide piece arranged between the switch shaft and the drive disk.
  • the support member connected to the control disk comprises a cam arranged on the drive disk and a cam arranged directly on the control disk, one cam of one end of the torsion spring for entraining it in one direction of rotation and the other cam of the other End of the torsion spring is assigned to take it in the opposite direction of rotation.
  • the catch of the locking member can extend over the entire length of the torsion spring and, depending on the direction of rotation, cooperate with one end or the other end of the torsion spring.
  • a display disc which is rotatably mounted on the drive disc, is expediently connected to the locking member or the switch shaft via the driver. This ensures that the actual switch position is always transferred directly to the position indicator.
  • two pawls arranged on opposite sides are provided, which in the various switching positions rest on locking surfaces provided on the periphery of the disk-like locking element, while the control disk is designed in particular over approximately 180 ° with control surfaces for pawl lifting.
  • the spring-loaded rotary actuator shown in FIGS. 1 to 4 is designed for use with a load-break switch with an earthing position provided in addition to the on and off position.
  • It comprises a carrier hub 8 which is pushed onto the associated switch shaft 13 and which is wedged with the switch shaft 13 in order to produce a rotationally fixed connection.
  • a carrier hub 8 On the carrier hub 8 sits a disc-like locking member 7, which is connected to the carrier hub 8 via a vulcanized rubber layer 9.
  • the locking member 7 is toothed with the carrier hub 8, the distances between two interacting teeth 10, 11 of the toothing being selected depending on the deflection of the rubber layer (cf. in particular also FIG. 2).
  • the locking member 7 cooperates with two lateral, detachable pawls 1, 2, which are attached to the associated housing 4 by eccentric bolts 3.
  • a control disk 17 is rotatably mounted on the carrier hub 8, which acts on the pawls depending on the rotational position and, if necessary, lifts them off.
  • the control disk 17 has control surfaces 34, 37 extending over approximately 180 ° (cf. FIG. 2).
  • a torsion spring 19 is arranged between a driver 22 which is fixedly connected to the locking member 7 and a support member which is firmly connected to the control disk 17 and comprises two cams 20, 21.
  • the carrier hub 8 and the locking member 7 are clamped onto the switch shaft via a guide piece 12 arranged in an extension of the switch shaft 13.
  • the guide piece 12 is screwed onto an extension 52 of the switch shaft 13 which has an external thread.
  • a drive disk 14 connected to the control disk 17 is rotatably mounted and held by means of a screw 15.
  • the control disk 17 can be actuated manually via this drive disk 14, for example by means of a removable plug-in lever (not shown).
  • the drive disk 14 is connected to the control disk via a cylindrical extension 40 directed towards the control disk 17.
  • a toothing 16, 18 is provided between the free end of the cylindrical extension 40 and the control disk 17 (cf. also FIG. 2).
  • the torsion spring 19 forming the spring arrangement is arranged coaxially with the cylindrical extension 40 of the drive disk 14.
  • the cylindrical extension 40 assigned to the drive disk 14 and the torsion spring 19 arranged thereon enclose this guide piece 12 arranged between the switch shaft 13 and the drive disk 14.
  • the drive pulley 14 comprises a central recess 26 and an eccentric recess 27 for receiving the pins of the removable plug lever (not shown).
  • the support member connected to the control disk 17 comprises a cam 20 attached to the drive disk 14 and directed towards the control disk 17 and a cam 21 arranged directly on the control disk 17 and directed towards the drive disk 14.
  • These two cams 20, 21 cooperate with the radially bent ends of the torsion spring 19, the cam 20 being associated with the left end of the torsion spring 19 in FIG. 1 and the cam 21 with the right end of the torsion spring.
  • the driver 22 which is fixedly connected to the locking member 7, extends essentially over the entire length of the torsion spring 19 and acts, depending on Direction of rotation, with one or the other end of the torsion spring 19 together.
  • An indicator disc 24 is rotatably mounted on the drive disc 14 by means of three rivets 23, which is carried along via a pin 25 of the driver 22 which is fixedly connected to the locking member 7. This ensures that the actual switch position is always transferred directly to the display.
  • control disk 17 is assigned a motor drive 29.
  • control disk 17 has a toothed ring 28 which extends approximately over 180 ° of its circumference and which meshes with a toothed wheel 42 of the motor drive 29 (cf. FIGS. 1 and 4).
  • the motor drive 29 is pivotally mounted on a fixed support plate 30 which is supported on the housing 4 (cf. FIG. 1).
  • the motor drive 29 can be pivoted from the drive position shown in FIGS. 1 and 4, in which the toothing is held, into a rest position, in which it is disengaged from the control disk 17.
  • the pivot axis is designated 58 in FIG. 4.
  • the motor drive 29 is arranged in a frame with two side walls 59, 60, these side walls extending parallel to a front plate 46 and the carrier plate 30.
  • An opening is provided in the side wall 59 of the motor frame or housing facing the front plate 46, into which an eccentric bolt 44 arranged at one end of an actuating shaft 32 enters.
  • the actuating shaft 32 is rotatably mounted at the bolt end in the fixed support plate 30 and at the other end in the fixed front plate 46.
  • a spring tongue 48 is attached, which carries a bolt 33 at the free end.
  • the actuating shaft 32 mounted at one end in the front plate 46 is passed through a longitudinal slot 54 in the drive disk 14 (cf. in particular FIG. 3), which is dimensioned according to the maximum rotational movement of the control disk 17, that is, in the present case, over approximately 180 ° extends.
  • the drive is actuated by means of the motor drive 29 or by means of a removable plug lever via the control disk 17.
  • a pin of the plug lever (not shown) enters the central opening 26 and another pin enters the recess 27 of the drive disk 14.
  • the control disk 17 is rotated, for example, clockwise relative to the disk-like locking member 7. This rotation takes place against the force of the torsion spring 19, which is due to the arrangement of the cams 20, 21 and the Mit 22 always claimed in the winding direction, ie drawn.
  • the torsion spring Shortly before switching on (when turning to the right) the torsion spring is tensioned by turning the control disc. However, the blocking member 7 initially remains in its initial position. Only a further rotation of the control disk 17 causes the control surface 34 of the control disk 17 to engage the pawl 1 and cause this pawl to be lifted, whereupon the disk-like locking member 7 becomes free and thus, due to the now released torsion spring 19, the locking member 7 and thus the Carrier hub 8 suddenly lags behind, until the rotational movement is stopped by the contact of a cam 35 of the locking member on the pawl 1 and the locking member 7 is also locked in the opposite direction by the engagement of the spring-loaded pawl 2 in the locking surface 36 (cf. in particular Fig. 2).
  • the switching function described works in reverse on the same principle. From the last-explained on position, the off position shown in FIG. 2 is first reached again.
  • the switch moves to an earthing position in which the rotational movement of the locking member 7 is limited by the cam 62 of the locking member resting on the pawl 2 and the locking of the locking member 7 in the opposite direction by the contact of the jack 1 is ensured on the locking surface 38.
  • the pawl 2 is raised by the control surface 37 of the control disk 17.
  • the pin 33 can enter the eccentric opening 50 in the front plate 46. After the longitudinal slot 54 in the drive plate 14 extends over substantially 180 °, the rotary movement of the drive disk 14 is not prevented by the actuating shaft 32.
  • end contacts or auxiliary switches 31 associated with the electric motor drive 29 are fastened on the carrier plate 30.
  • three switch arrangements are provided, namely one on the left side, one on the right side and one on the top (cf. FIG. 4). Two adjacent end contacts or auxiliary switches 31 are accordingly offset from one another by 90 °.
  • each group consists of three such end contacts or auxiliary switches (see FIG. 1).
  • the end contacts or auxiliary switches 31 are actuated by the driver 22 of the locking member 7 connected to the switch shaft 13.
  • the switches arranged on the circumference of the rotary drive have rollers facing the rotary drive, which are supported on the carrier 22 that is guided past in order to actuate the respective contacts.

Landscapes

  • Transmission Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
EP19900110309 1989-06-02 1990-05-30 Entrainement rotatif à ressort accumulé Withdrawn EP0400632A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893918102 DE3918102A1 (de) 1989-06-02 1989-06-02 Federspeicher-drehantrieb
DE3918102 1989-06-02

Publications (2)

Publication Number Publication Date
EP0400632A2 true EP0400632A2 (fr) 1990-12-05
EP0400632A3 EP0400632A3 (fr) 1992-05-20

Family

ID=6381983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110309 Withdrawn EP0400632A3 (fr) 1989-06-02 1990-05-30 Entrainement rotatif à ressort accumulé

Country Status (2)

Country Link
EP (1) EP0400632A3 (fr)
DE (1) DE3918102A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563848A1 (fr) * 1992-04-01 1993-10-06 Gec Alsthom T & D GmbH Entrainement rotatif à ressort accumulateur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT513044B1 (de) 2012-07-30 2014-01-15 Benedict Alexander Vorrichtung für einen Trennschalter, insbesondere Lasttrennschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1554718A (en) * 1920-12-15 1925-09-22 Gen Electric Switch-operating mechanism
DE1887788U (fr) * 1963-12-06 1964-02-20
DE7731290U1 (de) * 1977-10-10 1978-01-26 Concordia Sprecher Schaltgeraete Gmbh, 7024 Filderstadt Schnellschaltvorrichtung
DE3626526A1 (de) * 1986-08-05 1988-02-11 Concordia Sprecher Schalt Federspeicher-antrieb fuer elektrische schaltgeraete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563848A1 (fr) * 1992-04-01 1993-10-06 Gec Alsthom T & D GmbH Entrainement rotatif à ressort accumulateur

Also Published As

Publication number Publication date
DE3918102A1 (de) 1990-12-13
EP0400632A3 (fr) 1992-05-20

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