EP3807914A1 - Trennschalter und antriebsvorrichtung für einen trennschalter - Google Patents
Trennschalter und antriebsvorrichtung für einen trennschalterInfo
- Publication number
- EP3807914A1 EP3807914A1 EP19739936.3A EP19739936A EP3807914A1 EP 3807914 A1 EP3807914 A1 EP 3807914A1 EP 19739936 A EP19739936 A EP 19739936A EP 3807914 A1 EP3807914 A1 EP 3807914A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive device
- load torque
- transmission
- shaft
- output 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
- H01H31/16—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H2003/326—Driving mechanisms, i.e. for transmitting driving force to the contacts using bearings
-
- 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
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
Definitions
- the invention relates to a drive device for a disconnector with a motor and a transmission and a disconnector with such a drive device.
- Isolating switches which are also called isolators, are usually driven by a motor with which the isolating switch can be driven via a gearbox in two switching directions for switching on and off.
- a disconnector When the motor is at a standstill, a disconnector must not move in the current switching direction or in the opposite direction to this, as otherwise damage or accidents could result. For example, in the case of a pantograph separator driven by a motor, it must be prevented that the pantograph separator is accelerated in the direction of switch-off in the event of a motor failure during a switching movement due to the action of gravity.
- the transmission can, for example, be designed to be self-locking.
- a worm gear it can be achieved that the motor can drive the isolating switch via the gear, but conversely the gear inhibits a force effect emanating from the isolating switch.
- worm gears are not always reliably self-locking. Therefore, for example, two worm gear stages are arranged one behind the other.
- worm gears are expensive and are known to have poor efficiency.
- the invention has for its object to provide a Antriebsvor direction for a circuit breaker with a motor and a transmission, which is improved in terms of operational safety in the event of a motor failure.
- the object is achieved by a Antechnischsvorrich device with the features of claim 1.
- a drive device for a circuit breaker according to the invention comprises a motor, a transmission which has a drive shaft which can be driven by the motor in two opposite directions of rotation and an output shaft, and a load torque lock which transmits a load torque acting on the output shaft to the drive shaft in each direction of rotation prevented.
- the invention thus provides a drive device for a circuit breaker which has a load torque lock to prevent egg ne transmission of a load torque acting on the output shaft to the drive shaft in any direction of rotation. This prevents in both directions of rotation that a load moment acting on the output shaft causes a switching movement when the motor is at a standstill, which can cause damage or accidents.
- the invention requires no further complex self-locking design of the transmission bes to prevent such switching movements.
- Embodiments of the invention provide that the load torque lock is arranged on the drive shaft between the engine and the gearbox or between the drive shaft and the output shaft in the gearbox or on the output shaft behind the gearbox.
- a load torque lock can be arranged at various positions in front of, in or behind the transmission (based on the motor) and the arrangement of the load torque lock can therefore advantageously be adapted to the functional and structural properties of the disconnector.
- the transmission is a spur gear.
- the aforementioned embodiment of the invention takes advantage of the fact that the use of a load lock, in particular the formation of the transmission as a simple spur gear, he enables, since the transmission does not have to have a self-locking function that prevents a switching movement when the motor is at a standstill.
- Helical gear units have advantages over self-locking gear units such as self-locking worm gear units in terms of efficiency, costs, availability and availability. Since spur gearboxes have parallel axes, they are structurally simpler than worm gearboxes that have axes perpendicular to each other, and are therefore easier to manufacture with lower manufacturing tolerances and more cost-effectively.
- the load torque lock has wrap springs or clamping bodies or clamping rollers.
- a load torque lock of any type can be used for a drive device according to the invention.
- a load torque lock with wrap springs can have the advantage over a load torque lock with sprags or clamp rollers that the sprags cannot slide back or stick rollers due to the stick-slip effect, which can lead to noise and wear and tear.
- a disconnector according to the invention has a drive device according to the invention.
- the advantages of a circuit breaker according to the invention correspond to the advantages of a drive device according to the invention already mentioned above and are therefore not repeated here.
- FIG. 3 shows a schematic sectional view of a second
- Embodiment of a drive device for a disconnector Embodiment of a drive device for a disconnector.
- FIG. 1 shows an embodiment of a circuit breaker 1 in a side view.
- the isolating switch 1 is designed as a so-called double-pivot disconnector and comprises two isolator columns 3, 4, a rotary isolator 5 and a drive device 7 according to the invention.
- the rotary isolator 5 is arranged between the two isolator columns 3, 4 and is rotatably supported about an axis of rotation 8.
- the insulator columns 3, 4 and the rotary insulator 5 are arranged on a carrier 6.
- Each insulator column 3, 4 has a contact terminal 9, 10 at an upper end, which is connected to a connecting line 11,
- the rotary insulator 5 has two contact arms 13, 14 at an upper end.
- the rotary isolator 5 is rotatable between two switching positions about the axis of rotation 8. In a first switching position shown in Figure 1, a first contact arm 13 contacts the contact terminal 9 of a first Insulator column 3 and the second contact arm 14 contacts the contact terminal 10 of the second insulator column 4. In the two-th switching position, both contact arms 13, 14 are separated from the contact terminals 9, 10 of the insulator columns 3, 4.
- the drive device 7 is arranged on a support 15 of the carrier 6 below the rotary insulator 5. At the drive device 7 has an output shaft 17 which is coupled to the rotary isolator 5 and via which the rotary isolator 5 can be rotated by the drive device 7 between its switching positions.
- FIGS. 2 to 4 show various exemplary embodiments of the drive device 7.
- Figure 2 shows a first embodiment of the Antriebsvor direction 7 in a schematic sectional view.
- the drive device 7 comprises a motor 19, a transmission 21 and a load torque lock 23rd
- the motor 19 is designed as an electric motor.
- the gear 21 is designed as a two-stage spur gear with the output shaft 17, an input shaft 25, an intermediate shaft 27 and spur gears 29 to 32.
- a drive shaft axis 33 which is a longitudinal axis of Antriebswel le 25
- an intermediate shaft axis 34 which is a longitudinal axis of the intermediate shaft 27, and an output shaft axis 35, which is a longitudinal axis of the output shaft 17, are arranged parallel to one another.
- a first spur gear 29 is rigidly connected to the drive shaft 25, a second spur gear 30 and a third spur gear 31 are rigidly connected to the intermediate shaft 27 and a fourth spur gear 32 is rigidly connected to the output shaft 17.
- the first spur gear 29 is coupled to the second spur gear 30.
- the third spur gear 31 is coupled to the fourth spur wheel 32.
- the drive shaft 25, the intermediate shaft 27 and the output shaft 17 are about their respective longitudinal axes rotatably supported in bearings 37 which are arranged on a housing 50 of the transmission 21.
- the drive shaft 25 is driven by the motor 19 in two opposite directions of rotation around the Antechnischswellenach se 33.
- the rotations of the drive shaft 25 can be transmitted via the intermediate shaft 27 and the spur gears 29 to 32 to the output shaft 17, so that the output shaft 17 is rotated by rotations of the drive shaft 25 in the same direction of rotation as the drive shaft 25.
- the load torque lock 23 is arranged on the drive shaft 25 between the motor 19 and the transmission 21.
- the load torque lock 23 is designed to prevent transmission of a load torque acting on the output shaft 17 to the drive shaft 25 in each direction of rotation.
- the load torque lock 23 has, for example, wrap springs, clamping bodies or clamping rollers.
- Such load torque locks 23 are already known from the prior art and are therefore not described in detail here.
- load moment lock 23 with wrap springs are disclosed in DE 102011085851 A1
- load torque locks with pinch rollers in DE 202016101802 Ul load torque elements with clamp bodies of other shapes in EP 3106698 A1.
- FIG. 3 shows a second embodiment of the drive device 7 in a schematic sectional view.
- This exemplary embodiment of the drive device 7 differs from the exemplary embodiment shown in FIG. 2 essentially only in that the load torque lock 23 is arranged on the intermediate shaft 27 in the transmission 21, and in that the arrangement of the second spur gear 30 and the third spur gear 31 on the intermediate shaft 27 compared to the embodiment shown in FIG. 2 is interchanged.
- FIG. 4 shows a third embodiment of the drive device 7 in a schematic sectional view.
- This embodiment of the drive device 7 differentiates The embodiment shown in FIG. 2 essentially differs only in that the load torque lock 23 is arranged on the output shaft 17 behind the transmission 21, the arrangement of the second spur gear 30 and the third spur gear 31 on the intermediate shaft 27 compared to that in FIG 2 ge shown embodiment is interchanged and the drive shaft 25 and the intermediate shaft 27 are only supported by a bearing 37 on the housing 50.
Landscapes
- Gear Transmission (AREA)
- Transmission Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018212648.8A DE102018212648A1 (de) | 2018-07-30 | 2018-07-30 | Trennschalter und Antriebsvorrichtung für einen Trennschalter |
| PCT/EP2019/067655 WO2020025238A1 (de) | 2018-07-30 | 2019-07-02 | Trennschalter und antriebsvorrichtung für einen trennschalter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3807914A1 true EP3807914A1 (de) | 2021-04-21 |
| EP3807914B1 EP3807914B1 (de) | 2023-09-27 |
| EP3807914C0 EP3807914C0 (de) | 2023-09-27 |
Family
ID=67297137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19739936.3A Active EP3807914B1 (de) | 2018-07-30 | 2019-07-02 | Trennschalter und antriebsvorrichtung für einen trennschalter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11456124B2 (de) |
| EP (1) | EP3807914B1 (de) |
| CN (1) | CN112514016B (de) |
| DE (1) | DE102018212648A1 (de) |
| PL (1) | PL3807914T3 (de) |
| WO (1) | WO2020025238A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021173495A1 (en) * | 2020-02-24 | 2021-09-02 | Vanderbilt University | Prosthetic knee joint with electronically-controlled transmission |
| CN113345755B (zh) * | 2021-07-05 | 2025-03-18 | 江苏洛凯电气有限公司 | 隔离开关操作机构及其工作方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751857C2 (de) * | 1977-11-21 | 1979-05-17 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Elektrischer Motor mit Getriebe |
| DE8409940U1 (de) * | 1984-03-31 | 1984-07-19 | Elektro-Mechanik Gmbh, 5963 Wenden | Elektromechanischer stellantrieb |
| DE29811118U1 (de) * | 1998-06-22 | 1998-10-15 | SPN Schwaben Präzision Fritz Hopf GmbH, 86720 Nördlingen | Vorrichtung zur Betätigung eines Schaltelements |
| DE10354594B4 (de) * | 2003-11-21 | 2005-08-25 | Abb Technology Ag | Antriebseinheit eines Schaltgerätes einer gasisolierten Schaltanlage und Baukastensystem zur Bildung einer Antriebseinheit |
| CN100583332C (zh) * | 2008-04-29 | 2010-01-20 | 沈阳诚联宏电器制造有限公司 | 户外交流高压隔离开关电动操动机构 |
| DE102009028568B4 (de) * | 2009-08-17 | 2018-05-17 | Zf Friedrichshafen Ag | Vorrichtung zur Blockierung eines linearen Stellantriebs |
| CH704139B1 (de) * | 2010-11-29 | 2015-08-14 | Baumann Federn Ag | Anordnung als Lastmomentsperre mit Schlingfeder. |
| DE202013103040U1 (de) * | 2013-07-09 | 2014-10-10 | Alois Kober Gmbh | Antriebseinheit für einen Hilfsfahrantrieb |
| DE102014213607A1 (de) * | 2014-07-14 | 2016-01-14 | Zf Friedrichshafen Ag | Hybridantriebsgetriebe eines Kraftfahrzeugs |
| EP3106698A1 (de) * | 2015-06-17 | 2016-12-21 | Phoenix Mecano Komponenten AG | Mechanisches getriebe mit integrierter lastmomentsperre |
| DE202016101802U1 (de) * | 2016-04-06 | 2016-04-27 | Ringspann Gmbh | Lastmomentsperre |
| CN206340473U (zh) * | 2016-12-02 | 2017-07-18 | 北京华美煜力电力技术有限公司 | 一种铁路隔离开关传动系统 |
| CN106504935A (zh) | 2016-12-30 | 2017-03-15 | 福开尔(西安)电气有限公司 | 动车组高压箱内用电动隔离开关 |
-
2018
- 2018-07-30 DE DE102018212648.8A patent/DE102018212648A1/de not_active Ceased
-
2019
- 2019-07-02 PL PL19739936.3T patent/PL3807914T3/pl unknown
- 2019-07-02 EP EP19739936.3A patent/EP3807914B1/de active Active
- 2019-07-02 US US17/264,930 patent/US11456124B2/en active Active
- 2019-07-02 WO PCT/EP2019/067655 patent/WO2020025238A1/de not_active Ceased
- 2019-07-02 CN CN201980050187.7A patent/CN112514016B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112514016B (zh) | 2024-04-05 |
| EP3807914B1 (de) | 2023-09-27 |
| EP3807914C0 (de) | 2023-09-27 |
| WO2020025238A1 (de) | 2020-02-06 |
| CN112514016A (zh) | 2021-03-16 |
| DE102018212648A1 (de) | 2020-01-30 |
| US20210319961A1 (en) | 2021-10-14 |
| PL3807914T3 (pl) | 2024-04-02 |
| US11456124B2 (en) | 2022-09-27 |
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