EP0813742A1 - Mechanical and-member for mutually locking power switches - Google Patents
Mechanical and-member for mutually locking power switchesInfo
- Publication number
- EP0813742A1 EP0813742A1 EP96904749A EP96904749A EP0813742A1 EP 0813742 A1 EP0813742 A1 EP 0813742A1 EP 96904749 A EP96904749 A EP 96904749A EP 96904749 A EP96904749 A EP 96904749A EP 0813742 A1 EP0813742 A1 EP 0813742A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- coupling
- coupling carriage
- gate
- carrier
- 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
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20408—Constant tension sustaining
Definitions
- the invention relates to a mechanical AND gate for interlocking three circuit breakers with the following features:
- Each circuit breaker is provided with a flexible transmission element, whereby
- two of the transmission elements can be actuated as a function of the switching position of the associated circuit breakers in the sense of an input signal to be fed to the AND element and the remaining transmission element can be actuated by simultaneous actuation of the two first transmission elements in the sense of an output signal to be transmitted to the third circuit breaker,
- the AND element has a carrier and a coupling slide which can be moved relative to the carrier, - each flexible transmission element has a jacket and a cable pull which is displaceable in the jacket, wherein
- the carrier is designed as an abutment for supporting the coats
- the transmission elements are connected to the carrier in such a way that the cables with parallel longitudinal axes in the
- the object of the invention is to simplify the construction of a mechanical AND gate and to ensure reliable operation.
- Each of the cables is provided with a driver for connection to the coupling carriage, which interacts with the coupling carriage in the sense of a one-way clutch in such a way that only tensile forces can be transmitted between the coupling carriage and the cables,
- the coupling carriage is designed as a bar that extends transversely to the longitudinal axes of the cables and the
- the cable that transmits the output signal is connected to the coupling carriage on the outside, while the cable for one of the input signals is connected approximately in the middle and the cable that is assigned to the remaining input signal is connected to the coupling carriage opposite to the cable that transmits the output signal,
- the cable pulls assigned to the input signals are arranged with opposite directions of action and - in the uri-operated idle state of the AND gate, the driver of the in the middle position with the clutch pour the connected cable and the driver of the cable for the output signal onto the coupling carriage, while the driver of the cable arranged in the external position for the one input signal faces the coupling carriage at a distance such that the coupling carriage upon actuation of the cable attached in the middle position is pivotable about the driver of the cable pull attached in the external position.
- the AND gate according to the invention has the property that only a complete stroke of the cables for the input signals actuates the cable for the output signal. If only one of the input signals is present, the cable for the output signal remains at rest.
- the relative change in the distance between the cables when pivoting the coupling carriage is so small that special means to compensate for the misalignment can be dispensed with.
- the coupling slide extend in its longitudinal direction Has elongated holes for receiving a slide piece for the passage of the cables assigned to the input signals. In this arrangement, the coupling carriage aligns itself with the remaining third cable pull assigned to the output signal.
- FIG. 1 shows a basic circuit diagram with three power switches.
- Figures 2 and 3 show an AND gate schematically in plan view and in a side view.
- FIG. 4 shows the AND gate according to FIGS. 2 and 3 when one of the input signals is present, while FIG. 5 shows the state when the other input signal is present.
- FIG. 6 shows the state that both input signals are present and an output signal is accordingly output.
- Circuit breakers LSI, LS2 and LS3 shown.
- the circuit breakers LSI and LS2 are each assigned to a power supply via a transformer, while the circuit breaker LS3 is assigned to an emergency power generator G. In such a circuit, it is required for operational reasons that the circuit breaker LS3 is open when one of the circuit breakers LSI and LS2 is closed.
- a mechanical AND gate U using the above-described task of mutual
- the following figures show the locking of the circuit breakers LSI, LS2 and LS3.
- the AND gate U has a carrier T, for example made of sheet metal, which is folded twice on the upper edge and on the lower edge to form an edge web T1. Openings T2 are used for any attachment of the AND gate U in a switchgear or on a circuit breaker.
- the bevels of the carrier T serve as abutments of three flexible transmission elements S1, S2 and S3, each of which has a jacket S4, S5 or S6 and a cable pull S7, S8 and S9 guided in the jacket S4, S5, S6.
- an end piece S10 is provided in each case.
- the cable pulls S7, S8 and S9 have parallel longitudinal axes.
- the cables S7, S8 and S9 are connected to a bar-like coupling carriage K, which is formed from two parallel sheet metal parts K6, as can be seen in more detail in FIG. 3. Both sheet metal parts K6 are connected by riveted spacers K7.
- the cable pulls S7, S8 and S9 each pass through a cylindrical slider Kl, K2 and K3, which engages in opposite openings of the coupling carriage K.
- the openings for the sliders K1 and K2 are designed as elongated holes K4 and K5.
- the coupling carriage K is thus floatingly supported on the carrier T by the connection with the cable pulls S7, S8 and S9.
- a protective cover T3 which is shown in FIG.
- each of the cable pulls S7, S8 and S9 is provided with an associated driver Sll, S12 or S13.
- the drivers S12 are located and S13 on the sliders K2 and K3, while the driver S11 is at a distance D from the slider Kl.
- the arrangement of the transmission elements S1, S2 and S3 relative to the coupling slide K is important for the operation of the AND gate U.
- the cables S7 and S8 of the transmission elements S1 and S2 assigned to the input signals El and E2 act on the coupling carriage K in the opposite direction.
- the cable pull S9 of the transmission element S3 for the output signal A is arranged parallel to the cable pull S7 and engages at the opposite end of the coupling slide K.
- the cable S8 of the transmission element S2 for the input signal E2 engages approximately centrally on the coupling slide K and acts in the opposite direction as the cables S7 and S9.
- the transmission elements S1 and S2 are each assigned to an input signal E1 or E2, while the transmission element S3 serves to forward an output signal A.
- the coupling carriage K In the state of the AND gate U according to FIGS. 2 and 3, there are no input signals E1 and E2. Accordingly, the coupling carriage K is in its rest position, in which it is aligned with a dash-dotted basic position labeled "0".
- the designations of the input signals E1 and E2 and of the output signal A are given in parentheses to indicate that these signals are not active.
- FIG. 4 shows the state that an input signal E1 acts on the cable pull S7.
- the driver S now no longer faces the slider Kl at a distance D, but at a shorter distance Dl.
- the coupling carriage K thus remains unactuated, so that no output signal A is emitted.
- FIG. 5 shows that the coupling carriage K assumes an inclined position if instead of the input signal El an input signal E2 is present. However, the cable pull S8 for the output side of the AND gate U remains at rest, as can be seen from the fact that the slider K3 remains unchanged in the reference plane "0".
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Mechanical Control Devices (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19508808A DE19508808C1 (en) | 1995-03-06 | 1995-03-06 | Mechanical AND gate for mutual interlocking of circuit breakers |
DE19508808 | 1995-03-06 | ||
PCT/DE1996/000412 WO1996027890A1 (en) | 1995-03-06 | 1996-03-01 | Mechanical and-member for mutually locking power switches |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0813742A1 true EP0813742A1 (en) | 1997-12-29 |
EP0813742B1 EP0813742B1 (en) | 1998-09-30 |
Family
ID=7756404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96904749A Expired - Lifetime EP0813742B1 (en) | 1995-03-06 | 1996-03-01 | Mechanical and-member for mutually locking power switches |
Country Status (7)
Country | Link |
---|---|
US (1) | US5892301A (en) |
EP (1) | EP0813742B1 (en) |
JP (1) | JPH11501451A (en) |
CN (1) | CN1182498A (en) |
DE (2) | DE19508808C1 (en) |
IN (1) | IN185758B (en) |
WO (1) | WO1996027890A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3212546B2 (en) * | 1997-08-25 | 2001-09-25 | ファナック株式会社 | Deadman switch mechanism for robot emergency stop and teaching operation panel |
US6388214B1 (en) * | 2000-11-03 | 2002-05-14 | Eaton Corporation | Mechanical and gate for interlocking electric power switches and distribution system incorporating same |
CN101101821B (en) * | 2006-07-03 | 2010-07-21 | 浙江正泰电器股份有限公司 | Circuit breaker set with interlocking apparatus |
DE102008007987B3 (en) | 2008-02-07 | 2009-05-07 | Moeller Gmbh | Arrangement for locking switches |
DE102008052365B4 (en) * | 2008-10-20 | 2010-07-29 | Siemens Aktiengesellschaft | Device for locking several devices |
CA3172129C (en) * | 2020-09-25 | 2023-09-26 | James F. Ryley Iii | Managing non-contact forces in mechanisms |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2480993A1 (en) * | 1980-04-17 | 1981-10-23 | Telemecanique Electrique | LOCKING DEVICE BETWEEN TWO REMOTE ELECTRICAL DEVICES AND INSTALLATION EMPLOYING THE SAME |
DE3611020A1 (en) * | 1986-03-27 | 1987-10-01 | Siemens Ag | ARRANGEMENT FOR LOGICALLY LINKING MECHANICAL SIGNALS |
US5138898A (en) * | 1991-08-19 | 1992-08-18 | Teleflex Incorporated | Core element junction box |
FR2703183B1 (en) * | 1993-03-25 | 1995-05-19 | Gec Alsthom Equip Basse Tens | Safety device for mechanically locking circuit breakers between them. |
-
1995
- 1995-03-06 DE DE19508808A patent/DE19508808C1/en not_active Expired - Fee Related
-
1996
- 1996-03-01 JP JP8526534A patent/JPH11501451A/en active Pending
- 1996-03-01 EP EP96904749A patent/EP0813742B1/en not_active Expired - Lifetime
- 1996-03-01 US US08/913,030 patent/US5892301A/en not_active Expired - Fee Related
- 1996-03-01 DE DE59600631T patent/DE59600631D1/en not_active Expired - Fee Related
- 1996-03-01 WO PCT/DE1996/000412 patent/WO1996027890A1/en active IP Right Grant
- 1996-03-01 CN CN96193450A patent/CN1182498A/en active Pending
- 1996-03-04 IN IN398CA1996 patent/IN185758B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9627890A1 * |
Also Published As
Publication number | Publication date |
---|---|
IN185758B (en) | 2001-04-21 |
US5892301A (en) | 1999-04-06 |
WO1996027890A1 (en) | 1996-09-12 |
CN1182498A (en) | 1998-05-20 |
DE59600631D1 (en) | 1998-11-05 |
EP0813742B1 (en) | 1998-09-30 |
JPH11501451A (en) | 1999-02-02 |
DE19508808C1 (en) | 1996-09-19 |
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