EP2148348B1 - Schaltvorrichtung - Google Patents

Schaltvorrichtung Download PDF

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Publication number
EP2148348B1
EP2148348B1 EP09009513.4A EP09009513A EP2148348B1 EP 2148348 B1 EP2148348 B1 EP 2148348B1 EP 09009513 A EP09009513 A EP 09009513A EP 2148348 B1 EP2148348 B1 EP 2148348B1
Authority
EP
European Patent Office
Prior art keywords
operating
shaft
lever
operating lever
switching apparatus
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.)
Not-in-force
Application number
EP09009513.4A
Other languages
English (en)
French (fr)
Other versions
EP2148348A1 (de
Inventor
Miki Yamazaki
Kenji Tsuchiya
Takahiko Sawada
Masato Kobayashi
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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
Priority claimed from JP2008189051A external-priority patent/JP4611408B2/ja
Priority claimed from JP2009088991A external-priority patent/JP5189544B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP2148348A1 publication Critical patent/EP2148348A1/de
Application granted granted Critical
Publication of EP2148348B1 publication Critical patent/EP2148348B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements

Definitions

  • the present invention relates to a switching apparatus for power distribution equipments or power transmission systems, and more particularly to a switching apparatus having a new operating device for operating main circuit switches and earthing switches.
  • the patent document No. 2 discloses a multi-circuit switching apparatus comprising a mechanical interlocking mechanism for limiting a swing action of a lever in a closing direction of a main circuit switch and an earthing switch, wherein a shaft extending in a horizontal direction is disposed above an operating rod between the main circuit switch and the earthing switch, two levers rotatably supported by the shaft, and two pins for connecting the operating rods of the switches with one ends of the levers ( Fig. 11 ).
  • the interlocking mechanism comprises a link member connected to a pin and the lever, an interlock pin connected to one end of the link member, and a guide having an ellipse hole thereby moving the interlock pin up and down.
  • the interlocking mechanism is very complicated. Therefore, a switching apparatus having a simplified interlocking mechanism has been desired.
  • Switching apparatuses for power distribution systems or power transmission systems are provided with earthing switches in order to secure safety at the time of inspection etc thereof, in addition to main circuit switches. Accordingly, the switching apparatuses have a lever device for operating the main circuit switches and a lever device for operating the earthing switches. Therefore, two support shafts for supporting the lever devices are needed.
  • the present invention was made based upon the above fact, and it has an object to provide a switching apparatus provided with an operating device for main circuit switches and earthing switches for power use in three phases, which can be compact and simplified so that the whole switching apparatus can be made small in size.
  • the present invention provides a switching apparatus comprising an operating device (1), a main circuit switch (4), and an earthing switch (5), which comprises:
  • a structure of the lever devices can be simplified because the lever devices are rotatably supported around a single common shaft. As a result, the whole switching apparatus can be made small in size.
  • the present invention provides following various improvements or modifications of the above-mentioned invention.
  • the present invention provides a switching apparatus, wherein the first operating lever is connected to an operating rod of the main circuit switch, and the second operating lever is connected to an operating rod of the earthing switch.
  • the invention further provides a switching apparatus, which comprises a desired number of units for desired number of phases, wherein each unit comprises the operating device, the main circuit switch and the earthing switch.
  • the present invention provides a switching apparatus, wherein a plurality of main circuit switches are arranged right and left of the common shaft in a direction of the shaft length, and a plurality of the earthing switches are arranged left and right of the common shaft in the direction of the shaft length, the main circuit switches and the earthing switches are arranged alternately.
  • the present invention further provides a switching apparatus, wherein the first operating lever comprises a pair of levers (6C) for holding the main circuit switch and a first shaft cover (6A) that covers the common shaft at one end of the first operating lever, and wherein each end of the levers (6C) has a connecting portion (10A) having a connecting hole (6B) for connecting to the operating rod (4).
  • the first operating lever comprises a pair of levers (6C) for holding the main circuit switch and a first shaft cover (6A) that covers the common shaft at one end of the first operating lever, and wherein each end of the levers (6C) has a connecting portion (10A) having a connecting hole (6B) for connecting to the operating rod (4).
  • the present invention still further provides a switching apparatus, wherein the second operating lever comprises a pair of levers (7C) and a shaft cover (7A) for covering the common shaft at one end of each of the levers, and wherein the other end of each of the operating levers has a connecting portion (11A) having a hole (7B) for connecting to the operating rod of the main circuit switch.
  • the present invention provides a switching apparatus, wherein the first shaft cover is connected in the direction of the shaft length via the first connecting member (6D).
  • the present invention provides a switching apparatus, wherein the second shaft cover is connected in the direction of the shaft length via the second connecting portion (7D).
  • the present invention further provides a switching apparatus, wherein a shaft support (9) is fixed to each end of the common shaft, and wherein the upper end and lower end of the common shaft are positioned by positioning members (6E, 7E) thereby to position the shaft supports, first shaft cover and second shaft cover.
  • the positioning member may limit swing of the operating levers 6, 7 with respect to the shaft 8.
  • the present invention provides a switching apparatus according to claim 1, wherein the first operating lever and the first connecting member, and the second operating lever and the second connecting member are united respectively.
  • the present invention further provides a switching apparatus, wherein each of the first operating lever and the second operating lever has a semi-circular groove (61A1, 71A1) at one end thereof.
  • the present invention provides a switching apparatus, wherein the other end of each of the first operating lever and the second operating lever is a hollow lever (71A), the hollow lever is inserted to cover a connected member of an inner lever (60A, 70A).
  • the switching apparatus is composed of the apparatus according to combinations of two or more of the above-mentioned embodiments.
  • Fig. 1 there are three pairs of main circuit switches 4 for three phases and earthing switches 5 each corresponding to each of the main circuit switches in the casing 2 of the switching apparatus 1.
  • First operating levers 6 for operating the main circuit switches 4 for three phases and second operating levers 7 for operating the earthing switches for three phases are arranged alternately along a shaft 8 ( Fig. 2 ) and rotatably disposed coaxially on the shaft 8. The operating levers swing around the shaft 8.
  • the first operating levers 6 each comprises a plurality of shaft covers 6A (three, in this embodiment), levers 6C each being disposed at the shaft cover 7A in such a manner that the lever 6C interests the axis of the shaft cover 6A and having a connecting hole 7B at its end portion, first connecting members 6D disposed between the levers 6C to mechanically connect the lever members 6C, and a positioning member 6E at one end of the shaft 8.
  • the second operating member 7 has a similar structure to that of the first operating lever 6, which comprises a plurality of shaft covers 7A, levers 7C each being disposed between the shaft covers 6A in such a manner that the lever 7C interests the axis of the shaft cover 7A and having a connection hole 7B at its end portion, second connecting members 7D disposed between the levers 7C to mechanically connect the lever members 7C and a positioning member 7E at the other end of the shaft 8.
  • the positioning members 6E, 7E support the first operating levers 6 and second operating levers 7 towards the common shaft 8, as shown in Fig. 4 .
  • the end of the positioning members 6E, 7E are not in contact with the shaft supporting members 9 in order to secure free movement of the operating members, 6, 7.
  • Ends 10A, 11A of the lever portions 6C, 7C have connecting holes 6B, 7B.
  • the shaft supports 9 cover the shaft 8 as shown in Fig. 3 .
  • the shaft cover6A, 7A are alternately stacked on the common shaft 8.
  • the first operating lever 6 having the lever portion 6C and second operating lever 7 having the lever portion 7C are rotatably supported on the common shaft 8 though the shaft hole 6a, 7a and extend in the opposite direction, as shown in Fig. 4 .
  • the lever portions 6C, 7C have connecting holes 6B, 7B, respectively.
  • the switching apparatus may be provided with a swing action limiting members (16E, 17E), which limit a swing action of the first operating lever (6) and/or the second operating lever (7) around the common shaft (8).
  • the swing action limiting member limits swing action when the operating lever moves by a predetermined angle to prevent closing action of the switches.
  • the swing action limiting members (16E, 17E) each has a projection (16i, 17i) that touches the shaft cover (6A, 7A).
  • the swing action limiting member (16E, 17E) is disposed at one end of the lever portion.
  • the first operating lever 6 for the main circuit switches and the second operating lever 7 for the earthing switches are disposed alternately left and right sides along the common shaft 8.
  • the both ends of the common shaft 8 are inserted into holes of shaft supports 9 and the shaft supports 9 are fixed to inside of the casing 2 by means of bolts 10, as shown in Fig. 1 .
  • Each operating lever 6C of the first operating levers 6 is connected to an operating rod 4A of the main circuit switch 4 by means of a pin shaft 11, as shown in Fig. 1 .
  • Each operating lever 7C of the second operating levers 7 is connected to an operating rod 5A of the earthing switch 5 by means of a pin shaft 12.
  • the first operating lever 6 and the second operating lever 7 are connected to an operator (not shown), which is located vertically above the switching apparatus shown in Fig. 1 .
  • the first operating lever 6 and the second operating lever 7 may be united by forming them with casting. In this case, the inner face of holes of the shaft covers 6A, 7A of the first and second operating levers 6, 7 is machined to make the inner surface smooth.
  • first operating lever 6 and second operating lever 7 have a similar structure, but are arranged in an opposite direction.
  • the shaft covers 7A of the second operating lever 7 are inserted between the shaft covers 6A of the first operating lever 6 so that the shaft hole 7a of the shaft covers 7A of the second operating lever 7 and the shaft hole 6a of the shaft cover 6A of the first operating lever 6 are coincident.
  • the operating levers 6, 7 are assembled in back to back in the direction of an arrow, as shown in Fig. 5A so that a straight shaft hole is formed among the operating levers 6, 7. Then, the common shaft 8 is inserted into the shaft holes 6a, 7a. As a result, the first operating lever 6 and second operating lever 7 are united so that they are able to swing around the common shaft 8.
  • the operating devices thus assembled are fixed to the inside of the casing 2 by means of bolts 10 to install the operating devices in the casing.
  • Three operating lever devices are installed for one three-phase switching apparatus.
  • the operating device shown in Fig. 5C may move in states shown in Figs. 13A and 13B .
  • the main circuit switches and the earthing switches are open.
  • the main circuit switches are closed and the earthing switches are open.
  • the lever portions 6C of the first operating devices 6 installed in the casing 2 are connected to operating rods 4A of the main circuit switches 4 by means of the pin shafts 11.
  • the lever portion 7C of the second operating devices 7 installed in the casing 2 are connected to operating rods 5A by means of pin shafts.
  • the structure of the operating levers can be simplified because the first operating levers 6 for operating movable electrodes of the main circuit switches 4 and the second operating levers 7 for operating the movable electrodes of the earthing switches are arranged alternately and the end portions of lever portions 6A, 7A of the first and second operating levers 6, 7 are supported rotatably around the common shaft 8.
  • the switching apparatus can be further downsized.
  • the first operating lever 6 and second operating lever 7 have the same structure, and they can be manufactured by casting alloy with the same mold so that the production cost can be reduced and number of parts can be reduced.
  • first operating lever 6 and the second operating lever 7 are united in a casting, deformation or deviation in distance among the levers, etc becomes small so that assembling of the parts is easy.
  • Fig. 6 shows a cross sectional view of the operating device of another embodiment of the present invention.
  • Figs. 7A and 7B show an assembling process of the operating device.
  • the top plan view of the operating device is the same as shown in Fig. 2 and the cross sectional view of the operating device along the common shaft is the same as shown in Fig. 3 .
  • shaft covers 6A and lever portions 6C of the first operating lever 6 and shaft covers 7A and lever portions 7C of the second operating levers 7 are composed of two parts.
  • inner lever portions 60A, 70A are insertable into outer lever portions 61A, 71A.
  • the outer lever portion 71A, as well as 61A has the structure shown in Fig. 7A
  • the inner lever portions 70A have the structure shown in Fig. 7A .
  • the inner lever portion 60A has the same structure as that of the inner lever portion 70A.
  • the inner lever portions 60A, 70A have shaft covers 60A2, 70A2, each of which has a semi-circular groove 70A1 (60A1) extending along the shaft length, and the ends of the lever portions 60A4, 70A4 in opposite side to the semi-circular grooves 70A1, 60A1 have semi-circular grooves 70A3, 60A3.
  • a shaft hole and a connecting hole are formed by the circular inner lever 70A and the outer lever 71A.
  • the outer lever portions 61A, 71A are outer-insertable to the inner lever portions 60A, 70A, and the end portions of the lever 61A, 71A have semi-circular grooves 61A3, 71A3.
  • a circular hole is formed.
  • the outer lever portions 61A, 71A are made of casting as same as that of the first operating levers 6.
  • the outer lever portion 61A, 71A are outer-inserted to the inner lever portions 60A, 70A, which are separated by connecting member 7D by a predetermined distance, in a direction of the arrow.
  • the operating lever devices can be assembles. Advantages of this embodiment are that machining of the inner faces of the connecting holes can be conducted easily.
  • the second operating lever 7 is shown in Figs. 7A and 7B , the first operating lever 6 can be assembled as in the second operating lever.
  • the first and second operating levers are united by inserting a common shaft through the hole and shaft supports 9 are fixed to the both ends of the shaft 8.
  • the assembled first and second operating levers are fixed to the casing 2 of the switching apparatus 1.
  • shaft covers 6A, 7A of the first operating lever 6 and second operating lever 7 and the lever portions 6C, 7C are composed of two parts.
  • Outer lever portions 61A, 71A composed of lever portions having connection holes at the ends thereof and disposed to the shaft covers are outer-inserted to the inner lever portions 60A, 70A each having a rectangular shape in a cross section thereof as shown in Fig. 8 .
  • a size of the shaft covers 6A, 7A in a direction of the shaft of the first operating levers 6 and the second operating levers 7 is the same as that of the lever portions 6C, 7C in the shaft direction, but the size of the shaft covers 6A, 7A in the shaft direction can be made larger than that of the lever portions 6C, 7C in the shaft direction. According to this embodiment, the impact resistance of the operating levers can be further improved to increase reliability thereof.
  • the positioning members 6E, 7E are attached to the first and second operating levers 6, 7, they can be omitted.
  • the shaft covers 9 may be fixed to the operating levers.
  • the swing action limiting member has a function for prohibiting a swing action of the operating levers around the shaft with respect to the other operating lever.
  • a plan view of the switching apparatus according to this embodiment is omitted because the structure of the plan view thereof is the same as that of Fig. 1 .
  • FIG. 9 The plan view of one operating device of this embodiment is shown in Fig. 9 , wherein the main parts are the same as those in Fig. 2 except the swing action limiting members 16E, 17E are disposed at the end portions of the operating device.
  • a cross sectional view along the line III in Fig. 9 is shown in Fig. 10 , wherein the swing action limiting members 16E, 17E are disposed at the both end sides of the shaft 8.
  • the swing action limiting members 16E, 17E are projected from the operating levers 6, 7 as shown in Figs. 10 and 11 .
  • the projected portions are shown as projects (curved portions) 16i, 17i.
  • the swing action limiting member is compose of a straight portion 16h and curved portion 16i.
  • the swing action limiting member 16E is fixed to the second operating lever 7 and the swing action limiting member 17E is fixed to the operating lever 6.
  • the swing action limiting members cover part of the outer peripheries of the shaft covers of the levers 6, 7.
  • the tips of the projects 16i, 17i are opposite to each other as shown in Fig. 11 so that the swing of one of the operating levers 6, 7 is limited with respect to the other operating lever.
  • the second operating lever 7 has the same structure as that of the first operating lever 6.
  • the first operating lever 6 and the second operating lever 7 are alternately stacked along the common shaft 8, as shown in Fig. 10 , wherein the shaft cover portions 6A, 7A have shaft holes 6a, 7a through which the shaft 8 is inserted are stacked.
  • Figs. 12A , 12B and 12C show an assembling process of the operating device of this embodiment.
  • the first operating lever 6 having first levers 6C connected by connecting members 6D is provided with the swing action limiting member 16E at one end thereof.
  • the second operating lever 7 having second levers 7C connected by connecting members 7D is provided with the swing action limiting member 17E at one end thereof.
  • the swing action limiting member 6E has a curved portion and a straight portion to cover the surface of the shaft cover 7A, and the positioning ember 7E has a curved shape to cover the surface of the shaft cover 6A.
  • the shaft cover portion 6g is inserted into the recess 7f of the second operating lever 7, and the shaft cover portion 7g is inserted into the recess 6f of the first operating lever 6 to constitute the operating device as shown in Fig. 12B .
  • the shaft covers 6A are inserted into the gaps between the shaft covers 7A of the second operating lever 7 and the shaft covers 7A are inserted into the gaps between the shaft covers 6A of the first operating lever 6, as shown in an arrow in Fig. 12A . Then, the first and second operating levers 6, 7 are opposed to each other as shown in Fig. 12A and combined to make the shaft hole 6a, 7a.
  • the shaft 8 is inserted into the common shaft hole 6a, 7a in the direction of an arrow as shown in Fig. 12B .
  • the first operating lever 6 and the second operating lever 7 are supported by the common shaft 8 being able to swing around the shaft.
  • shaft supports 9 are fixed to both ends of the common shaft 8 to constitute a unit operating device, and three units of the operating devices are installed in the casing 2 side by side by means of bolts 10 as shown in Fig. 1 to constitute the three phase switching apparatus of the present invention.
  • Fig. 13A shows a perspective view of the unit of the operating device, which indicates a status where the main circuit switches and the earthing switches are open.
  • Fig. 13B shows a perspective view of the unit of the operating device, which indicates a status where the main circuit switches are open and the earthing switches are closed.
  • Fig. 14 is a diagram showing a movement of the levers 6, 7 and the swing action limiting member 16E.
  • the swing action limiting member 16E limits a swing action of the levers 6, 7 around the common shaft 8. Operation of the swing action limiting member 16E will be explained in detail later.
  • the lever portion 6C of the first operating lever 6 installed in the casing 2 is connected to the operating rod 4A of the main circuit switch 4 by means of the pin 11.
  • the lever portion 7C of the second operating lever 7 is connected to the operating rod 5A by means of pin 12.
  • Fig. 13A shows a status that all the switches 4, 5 are open wherein an angle constituted by the lever portion 6C of the first operating lever 6 and the lever portion 7C of the second operating lever 7 is about 180 degrees as shown in Fig. 11 .
  • the projection 16i of the swing action limiting member 16E of the first operating lever 6 is located with a gap around the periphery of the shaft cover 7A of the second operating lever 7.
  • the projection 17i of the swing action limiting member 16E of the second operating lever 7 is located with a gap around the periphery of the shaft cover 6A of the second operating lever 6.
  • Fig. 13B shows a perspective view of the operating device wherein the main circuit switches 4 are open and the earthing switches 5 are closed.
  • An angle constituted by the lever portion 6C of the first operating lever 6 and the lever portion 7C of the second operating lever 7 is over 180 degrees, wherein the lever portion 6C of the first operating lever 6 and the operating rod 4A are pressed down to connect a movable contact and a fixed contact of a main circuit switch.
  • the angle is decided in accordance with the gap between the movable contact and the fixed contact of the main circuit switch 4.
  • the tip of the projection 16i of the swing action limiting member 16E contacts with the outer periphery of the shaft cover 7A of the second operating lever 7 and the swing action limiting member 16E limits movement of the second operating lever 7 for operating the earthing switches in a clockwise direction.
  • the tip of the projection 17i of the swing action limiting member 17E contacts with the outer periphery of the shaft cover 6A of the first operating lever 6 and limits movement of the second operating lever 7 for operating the earthing switches in a clockwise direction.
  • the closing operation of the earthing switches 5 is locked.
  • the tip of the projection 17i of the swing action limiting member 17E of the second operating lever 7 contacts with the outer periphery of the shaft cover 6A of the first operating lever 6 to thereby limit a swing action of the first operating lever 6 for operating the main circuit switches 4 in a clockwise direction. As a result, the closing operation of the main circuit switches 4 is locked.
  • Fig. 14 is a side view of the operating device shown in Fig. 13A in solid lines, and a side view of the operating device shown in Fig. 13B is shown in dotted lines.
  • L is a length of the lever portion 6C, which is a length between the center of the connecting hole 6B and the center of the shaft hole 6a.
  • ⁇ is a swing angle of the first operating lever 6, which is a swing angle from the vertical line in the center of the shaft hole 6a at the time when the tip of the projection 16i contacts with the outer periphery of the shaft cover 7A of the second operating lever 7.
  • x is a moving distance of the first operating lever 6 in up and down directions, which corresponds to the gap between the movable contact and the fixed contact of the main circuit switches.
  • the symbol x is determined by the gap between the movable contact and the fixed contact, and the swing angle ⁇ is determined by the length L of the lever portion 6C of the first operating lever 6. Accordingly, the length L should be such that the tip of the projection 16i of the swing action limiting member 16E touches the outer periphery of the shaft cover 7A of the second operating lever 7, when the first operating lever 6 swings by the swing angle ⁇ .
  • Fig. 14 shows only the swing action limiting member 16E of the first operating lever 6, the swing action limiting member 17E having the projection 17i is formed in the same way as of the swing action limiting member 16E.
  • the number of the parts of the operating device will be reduced because an additional interlock mechanism for the main circuit switches and earthing switches, which is necessary for securing safety of the switching apparatus in case of the previous embodiments whose swing action limiting member has no swing limiting function.
  • the operating device of this embodiment can be applied to various switching apparatuses having different gaps between the movable contacts and the fixed contacts without changing basic structure of the operating device. As a result, production cost of the switching apparatuses with a reduced number of parts can be provided.
  • first operating lever 6 and the second operating lever 7 have the same structure, and hence they can be produced by using the same casting mold, thereby to reducing production cost.
  • first operating lever 6 and the second operating lever are united as a casting, deformation of the operating device can be minimized, and assembling of the switching apparatus becomes easy.
  • Figs. 15 , 16 , 17 , 18A, 18B and 19 show another embodiment.
  • Fig. 15 is a plan view of one unit of the operating device, which corresponds to Fig. 2 . This embodiment corresponds to that shown in Figs. 7A , 7B .
  • Fig. 16 is a cross sectional view along the line XII in Fig. 15 , which corresponds to Fig. 3 .
  • the swing action limiting member (swing movement limiting member) 16E, 17E has projections 16i, 17i as shown in Fig. 16 .
  • Fig. 17 is a cross sectional view along the line XIII in Fig. 15 . Since the shaft covers 6A, 7A of the first operating lever 6 and the second operating lever 7 are constituted by two parts, i.e. inner lever portions 60A, 70A and outer lever portions 61A, 71A, which are outer-insertable to the inner lever portions.
  • the inner lever portions 60A, 70A each has shaft cover 60A2, 70A2 with a semi-circle having a semi-circular groove 60A1, 70A1 at the shaft cover side.
  • the inner lever portions 61A, 71A each has lever portion 60A4, 70A4 having a semi-circular groove 60A3, 70A3 at the end of thereof.
  • the outer lever portions 61A, 71A are outer-insertable to the inner lever portions 60A, 70A as shown in Figs. 18A and 18B .
  • the outer lever portions 61A, 71A each has the semi-circular shaft cover 61A2, 71A2 having a semi-circular groove 61A1, 71A1 and the lever portions 61A4, 71A4 having the semi0circular groove 61A3, 71A3 at the end of the lever portion 61A, 71A.
  • the outer lever portions 61A, 71A can be produced by casting as same as the first operating lever 6 and the second operating lever 7.
  • the inner lever portions 70A are connected with connecting members 7D.
  • An outer lever portions 71A are outer-inserted to the inner lever portions as shown in Fig. 18B to constitute the second operating lever 7.
  • the first operating lever 6 is constituted by the same manner as shown in Figs. 18A and 18B .
  • the common shaft 8 is inserted into the shaft hole as shown in Figs. 5B and 12B .
  • the shaft supports 9 are fixed to both ends of the shaft 8 as shown in Figs. 5C and 12C .
  • FIG. 19 As another example wherein the shaft covers 6C, 7C and the lever portions 6C, 7C of the first and second operating levers 6, 7, there is shown a cross sectional view in Fig. 19 .
  • This embodiment corresponds to Fig. 8 .
  • the operating device is composed of the inner lever portions 60A, 70A with a rectangular shape and outer lever portions 60A, 70A, which are outer-insertable to the inner lever portions 61A, 71A.
  • the swing action limiting member 16E, 17E are disposed at the outside of the lever portion 6C, 7C as shown in Figs. 2 , 9 , 15 .
  • the swing action limiting members can be disposed inside of the lever portions 6C, 7C.
  • the swing action limiting members 16E, 17E are disposed to each of the first and second operating levers 6, 7; but at least one swing action limiting member for one of the operating levers is enough for limiting the swing action.
  • the tong form projections 16i, 17i of the swing action limiting member 16E, 17E are formed to cover the part of the outer periphery of the shaft cavers, wherein the member has a plate having a semi-circle with a radius of curvature of the shaft hole 6a, but the circular plate may be substituted with a L-shape plate that covers the shaft covers.
  • the L-shaped plate may have tips of the projections 16i, 17i that touch the outer periphery of the shaft covers.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (15)

  1. Schaltvorrichtung mit einem Betätigungsgerät (1), einem Hauptkreisschalter (4) und einem Erdungsschalter (5), aufweisend:
    eine gemeinsame Welle (8),
    einen ersten Betätigungshebel (6), der mit einer beweglichen Elektrode des Hauptkreisschalters (4) verbunden ist, und
    einen zweiten Betätigungshebel (7), der mit einer beweglichen Elektrode des Erdungsschalters (5) verbunden ist, der dem Hauptkreisschalter (4) entspricht,
    dadurch gekennzeichnet, dass die ersten und zweiten Betätigungshebel vereint und wechselweise um die gemeinsame Welle herum gestapelt sind und dass sie in der Lage sind, um die gemeinsame Welle herum zu schwenken.
  2. Schaltvorrichtung nach Anspruch 1, wobei der erste Betätigungshebel mit einer Betätigungsstange des Hauptkreisschalters verbunden ist und der zweite Betätigungshebel mit einer Betätigungsstange des Erdungsschalters verbunden ist.
  3. Schaltvorrichtung nach Anspruch 1 oder 2, der eine gewünschte Anzahl an Einheiten für eine gewünschte Anzahl an Phasen umfasst, wobei eine Einheit jeweils das Betätigungsgerät, den Hauptkreisschalter und den Erdungsschalter umfasst.
  4. Schaltvorrichtung nach einem der Ansprüche 1 bis 3, wobei rechts und links der gemeinsamen Welle in Richtung der Länge der Welle mehrere Hauptkreisschalter angeordnet sind und links und rechts der gemeinsamen Welle in Richtung der Länge der Welle mehrere der Erdungsschalter angeordnet sind, wobei die Hauptkreisschalter und die Erdungsschalter abwechselnd angeordnet sind.
  5. Schaltvorrichtung nach einem der Ansprüche 1 bis 4, wobei der erste Betätigungshebel ein Paar Hebel (6C) zum Halten des Hauptkreisschalters und eine erste Wellenabdeckung (6A), die die gemeinsame Welle an einem Ende des ersten Betätigungshebels abdeckt, aufweist und wobei jedes Ende der Hebel (6C) einen Verbindungsabschnitt (10A) mit einem Verbindungsloch (6B) zur Verbindung mit der Betätigungsstange (4) aufweist.
  6. Schaltvorrichtung nach einem der Ansprüche 1 bis 5, wobei der zweite Betätigungshebel ein Paar Hebel (7C) und eine Wellenabdeckung (7A) zum Abdecken der gemeinsamen Welle an einem Ende jedes der Hebel aufweist und das andere Ende jedes der Betätigungshebel einen Verbindungsabschnitt (11A) mit einem Loch (7B) zur Verbindung mit der Betätigungsstange des Erdungsschalters aufweist.
  7. Schaltvorrichtung nach Anspruch 5, wobei die erste Wellenabdeckung eine Verbindung über den ersten Verbindungsabschnitt (6D) in Richtung der Länge der Welle aufweist.
  8. Schaltvorrichtung nach Anspruch 6, wobei die zweite Wellenabdeckung eine Verbindung über den zweiten Verbindungsabschnitt (7D) in Richtung der Länge der Welle aufweist.
  9. Schaltvorrichtung nach einem der Ansprüche 1 bis 8, wobei an jedem Ende der gemeinsamen Welle ein Wellenhalter (9) befestigt ist und das obere Ende und das untere Ende der gemeinsamen Welle von Positionierelementen (6E, 7E) positioniert werden, wodurch die Wellenhalter, die erste Wellenabdeckung und die zweiten Wellenabdeckung positioniert werden.
  10. Schaltvorrichtung nach einem der Ansprüche 1 bis 9, wobei der erste Betätigungshebel und das zweite Verbindungselement sowie der zweite Betätigungshebel und das zweite Verbindungselement entsprechenderweise vereint sind.
  11. Schaltvorrichtung nach einem der Ansprüche 1 bis 10, wobei der erste Betätigungshebel und der zweite Betätigungshebel jeweils an ihrem einen Ende eine halbkreisförmige Rinne (61A1, 71A1) aufweisen.
  12. Schaltvorrichtung nach Anspruch 11, wobei das jeweilige andere Ende des ersten Betätigungshebels und des zweiten Betätigungshebels ein hohler Hebel (71A) ist, der zur Abdeckung eines Verbindungselements eines Innenhebels (60A, 70A) gesteckt wird.
  13. Schaltvorrichtung nach einem der Ansprüche 1 bis 12, mit einem Positionierelement (16E, 17E), das eine Schwenkbewegung des ersten Betätigungshebels (6) oder des zweiten Betätigungshebels (7) um die gemeinsame Welle (8) begrenzt.
  14. Schaltvorrichtung nach Anspruch 13, wobei
    das Positionierelement (16E, 17E) einen Vorsprung (16i, 17i) aufweist, der die Wellenabdeckung (6A, 7A) berührt, und/oder
    das Positionierelement (16E, 17E) an einem Ende des Hebelabschnitts angeordnet ist, und/oder
    das den Schwenkvorgang begrenzende Element auf der Seite des Hebelabschnitts am Ende des Betätigungsgeräts angeordnet ist, und/oder
    das den Schwenkvorgang begrenzende Element einen geraden Abschnitt und einen gekrümmten Abschnitt aufweist, um einen Teil des Außenumfangs der Wellenabdeckung abzudecken, und/oder
    das den Schwenkvorgang begrenzende Element einen Vorsprung aufweist, der den Außenumfang der Wellenabdeckung berührt, wenn sich der Betätigungshebel um einen bestimmten Winkel dreht, und/oder
    der gekrümmte Abschnitt des den Schwenkvorgang begrenzenden Elements den gleichen Krümmungsradius wie die Wellenabdeckung aufweist und das Zentrum des gekrümmten Elements das gleiche wie das der Welle ist, und/oder
    das den Schwenkvorgang begrenzende Element aus zwei Platten zusammengesetzt ist, so dass unter Abdeckung eines Teils des Außenumfangs der Wellenabdeckung eine L-Form gebildet wird.
  15. Schaltvorrichtung nach einem der Ansprüche 1 bis 14, wobei der erste Betätigungshebel über eine Betätigungsstange mit dem beweglichen Kontakt verbunden ist und der zweite Betätigungshebel über eine andere Betätigungsstange mit dem beweglichen Kontakt verbunden ist.
EP09009513.4A 2008-07-22 2009-07-22 Schaltvorrichtung Not-in-force EP2148348B1 (de)

Applications Claiming Priority (2)

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JP2008189051A JP4611408B2 (ja) 2008-07-22 2008-07-22 開閉器の操作装置
JP2009088991A JP5189544B2 (ja) 2009-04-01 2009-04-01 開閉器の操作装置

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EP2148348A1 EP2148348A1 (de) 2010-01-27
EP2148348B1 true EP2148348B1 (de) 2014-04-23

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GB202403132D0 (en) * 2021-08-05 2024-04-17 Glove Ip Pty Ltd Glove, rigid guard structure for a glove and a method of manufacturing a glove

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Publication number Priority date Publication date Assignee Title
US3594524A (en) * 1970-02-09 1971-07-20 Gen Electric Vacuum-type electric circuit breaker
JPH0689646A (ja) 1992-09-10 1994-03-29 Fuji Electric Co Ltd 回路遮断器の操作機構
JPH1117629A (ja) * 1997-06-24 1999-01-22 Nec Corp 受信機の故障検出回路
JPH1140012A (ja) * 1997-07-15 1999-02-12 Toshiba Corp 開閉器の操作機構
JP4358698B2 (ja) * 2004-07-23 2009-11-04 株式会社日立製作所 電磁操作装置
JP4423598B2 (ja) 2004-08-17 2010-03-03 株式会社日立製作所 真空スイッチギヤの単相モジュールおよび真空スイッチギヤ
ITBG20060051A1 (it) * 2006-10-06 2008-04-07 Abb Service S Rl Interruttore di bassa tensione con poli intercambiabili di tipo sigillato

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KR20100010488A (ko) 2010-02-01
HK1137851A1 (en) 2010-08-06
EP2148348A1 (de) 2010-01-27

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