JP5922507B2 - Electromagnetic switchgear - Google Patents

Electromagnetic switchgear Download PDF

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JP5922507B2
JP5922507B2 JP2012136480A JP2012136480A JP5922507B2 JP 5922507 B2 JP5922507 B2 JP 5922507B2 JP 2012136480 A JP2012136480 A JP 2012136480A JP 2012136480 A JP2012136480 A JP 2012136480A JP 5922507 B2 JP5922507 B2 JP 5922507B2
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shaft
electromagnetically operated
operated switchgear
lever
operating device
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JP2014002877A (en
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佐藤　和弘
和弘 佐藤
土屋　賢治
賢治 土屋
歩 森田
歩 森田
彰男 中澤
彰男 中澤
勝 芳賀
勝 芳賀
久雄 川上
久雄 川上
滋 横須賀
滋 横須賀
雅人 藪
雅人 藪
竜一 渡辺
竜一 渡辺
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Hitachi Ltd
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本発明は電磁操作式開閉装置に係り、特に、真空遮断器を電磁操作装置の電磁力を利用して開閉するものに好適な電磁操作式開閉装置に関する。   The present invention relates to an electromagnetically operated switchgear, and more particularly to an electromagnetically operated switchgear suitable for opening and closing a vacuum circuit breaker using the electromagnetic force of the electromagnetically operated device.

真空遮断器を電磁操作装置の電磁力を利用して開閉する電磁操作式開閉装置は、特許文献１に記載のように、相対向して配置された可動鉄心と固定鉄心及び電磁力に応じて可動鉄心と固定鉄心を離間又は接触させるコイルを有する電磁石と、電磁石コイルを励磁するための電力を蓄積するコンデンサと、開閉器に対する投入指令又は開極指令に応答してコンデンサから電磁石コイルに供給する電流の通電方向を制御する制御基板と、可動鉄心に連結されて電磁石から発生した電磁力に伴う駆動力をリンク機構部を介して開閉器に伝達するシャフトと、電磁石とコンデンサ及び制御基板を収納するケースとを備え、ケースの引出し方向から見た正面に着脱可能な正面カバーが固定される開口が形成され、コンデンサと制御基板を挟んでそれぞれケースの左右側壁に着脱可能に固定して構成されている。   As described in Patent Document 1, an electromagnetically operated switchgear that opens and closes a vacuum circuit breaker using the electromagnetic force of an electromagnetically operated device corresponds to a movable iron core, a fixed iron core, and an electromagnetic force that are arranged to face each other. An electromagnet having a coil for separating or contacting the movable iron core and the fixed iron core, a capacitor for accumulating electric power for exciting the electromagnet coil, and supplying the electromagnetic coil from the capacitor in response to a closing command or opening command for the switch Houses the control board that controls the direction of current flow, the shaft that is connected to the movable iron core and transmits the driving force associated with the electromagnetic force generated from the electromagnet to the switch via the link mechanism, and the electromagnet, capacitor, and control board. And an opening for fixing a detachable front cover is formed on the front as viewed from the case pull-out direction. It is constructed by detachably fixed to the left and right side walls of over scan.

特開２００４−１５２６２５号公報JP 2004-152625 A

しかしながら、特許文献１に記載の構成では、電磁石から開閉器に駆動力を伝達するシャフトの両端部が軸受けとなる構成であるため、駆動時にシャフトに撓みやねじりが発生し、開閉動作速度が低下することが懸念され、しかも、筺体フレームの両側板面のみがシャフトの軸受けとなる構成であるため、開閉器の固定板面と、電磁石を固定及び収納しているケースに撓みが発生し、開閉動作が安定しない恐れがある。   However, in the configuration described in Patent Document 1, since both ends of the shaft that transmits the driving force from the electromagnet to the switch are bearings, the shaft is bent or twisted during driving, and the switching operation speed is reduced. In addition, since only the both side plate surfaces of the housing frame serve as shaft bearings, the fixing plate surface of the switch and the case where the electromagnet is fixed and housed are bent, and the switch is opened and closed. Operation may be unstable.

これらの対策として、シャフトの径や筺体フレーム板の厚みを大きくし、シャフトの撓みやねじりや筺体フレームの撓みが発生しない程度に強度を増加することが考えられるが、この対策では、必然的に開閉装置の重量、コスト、サイズが増加してしまう。   As countermeasures, the diameter of the shaft and the thickness of the frame frame plate may be increased to increase the strength to such an extent that the shaft is not bent or twisted or the frame of the frame is not bent. The weight, cost, and size of the switchgear increase.

本発明は、上述の事柄に基づいてなされたもので、その目的とするところは、駆動時にシャフトに対する撓みやねじりの発生を抑制することは勿論、開閉装置の重量、コスト、サイズを増加させることなく、安定した開閉動作を実現できる電磁操作式開閉装置を提供することにある。   The present invention has been made on the basis of the above-mentioned matters, and its object is to increase the weight, cost, and size of the switchgear as well as to suppress the occurrence of bending and twisting of the shaft during driving. It is another object of the present invention to provide an electromagnetically operated switchgear that can realize a stable opening / closing operation.

本発明の電磁操作式開閉装置は、上記目的を達成するために、電磁力に応じて可動鉄心と固定鉄心を離間又は接触させるコイルを有する電磁操作装置と、該電磁操作装置から発生した電磁力に伴う駆動力を可動ロッド、レバー、シャフト、絶縁ロッドから成るリンク機構部を介して接点同士が離間又は接触される開閉器部と、前記シャフトを支持する軸受け金具と、これらを収納支持する筐体フレームとを備え、
前記軸受け金具は、前記シャフトの端部より内側に配置され、前記筐体フレームの底面板と、前記電磁操作装置を収納支持するケースの背面板と、前記開閉器部を支持する固定板の３点で固定されていることを特徴とする。 In order to achieve the above object, an electromagnetically operated switchgear according to the present invention includes an electromagnetic operating device having a coil that separates or contacts a movable iron core and a fixed iron core according to electromagnetic force, and an electromagnetic force generated from the electromagnetic operating device. A switch part in which the contacts are separated or contacted via a link mechanism part composed of a movable rod, lever, shaft, and insulating rod, a bearing bracket for supporting the shaft, and a housing for storing and supporting them. With body frame,
The bearing fitting is disposed inside the end of the shaft, and includes a bottom plate of the housing frame, a back plate of a case that houses and supports the electromagnetic operating device, and a fixing plate that supports the switch unit. It is fixed at a point .

本発明によれば、駆動時にシャフトに対する撓みやねじりの発生を抑制することは勿論、開閉器部の重量、コスト、サイズを増加させることなく、安定した開閉動作を実現できる電磁操作式開閉装置を得ることができる。   According to the present invention, an electromagnetically operated switchgear that can realize a stable switching operation without increasing the weight, cost, and size of the switch unit as well as suppressing the occurrence of bending and twisting of the shaft during driving. Can be obtained.

本発明の電磁操作式開閉装置の実施例１を示す側面図である。It is a side view which shows Example 1 of the electromagnetically operated switchgear of the present invention. 本発明の電磁操作式開閉装置の実施例１を示すシャフト部の上面図である。It is a top view of the shaft part which shows Example 1 of the electromagnetically operated switchgear of the present invention. 本発明の電磁操作式開閉装置の実施例１に採用される軸受け金具の取付け状態を示す拡大図である。It is an enlarged view which shows the attachment state of the bearing bracket employ | adopted as Example 1 of the electromagnetically operated switchgear of this invention.

以下、図示した実施例に基づいて本発明の電磁操作式開閉装置を説明する。   The electromagnetically operated switchgear according to the present invention will be described below based on the illustrated embodiment.

図１及び図２に、本発明の電磁操作式開閉装置の実施例１を示す。図１に示すように、本実施例の電磁操作式開閉装置は、右側の主回路開閉部１と、左側の電磁操作装置２と、下側のリンク機構部３とから概略構成されている。   1 and 2 show a first embodiment of an electromagnetically operated switchgear according to the present invention. As shown in FIG. 1, the electromagnetically operated switchgear according to the present embodiment is roughly composed of a right main circuit switcher 1, a left electromagnetic switch2, and a lower link mechanism 3.

主回路開閉部１は、図示奥行き方向に三相分が等間隔で配置され、開閉器固定板４に固定されている。主回路開閉部１には、図示しない接離自在の一対の接点を有する真空バルブが設けられ、固定側には固定側主回路導体５、可動側には可撓導体６を介して可動側主回路導体７とワイプ機構を内部に収納した操作用絶縁ロッド８が接続されている。操作用絶縁ロッド８の他端側は、開閉器固定板４を貫通し、リンク機構部３の主回路開閉用レバー９の一端に回動自在に接続されている。   The main circuit opening / closing part 1 has three phases arranged at equal intervals in the illustrated depth direction, and is fixed to the switch fixing plate 4. The main circuit opening / closing part 1 is provided with a vacuum valve having a pair of contact points that are not shown in the figure, and the movable side main circuit conductor 5 is connected to the fixed side via the fixed side main circuit conductor 5 and the movable side via the flexible conductor 6. An operation insulating rod 8 in which the circuit conductor 7 and the wipe mechanism are housed is connected. The other end side of the operation insulating rod 8 passes through the switch fixing plate 4 and is rotatably connected to one end of the main circuit opening / closing lever 9 of the link mechanism section 3.

また、電磁操作装置２は、箱型形状に形成されたケース１０の内部に、駆動力を発生する電磁石１１、図示しない電磁石を励磁するコンデンサ、開閉動作の制御指令を出力する制御基板、開閉状態を外部に送出する補助接点、開閉状態を表示する表示板、開閉動作回数をカウントするカウンタが収納され、電磁石１１の駆動軸１２は、リンク機構部３の電磁操作装置用レバー１３に回動自在に接続されている。   Further, the electromagnetic operating device 2 includes an electromagnet 11 that generates a driving force, a capacitor that excites an electromagnet (not shown), a control board that outputs a control command for opening / closing operation, and an open / closed state inside a case 10 formed in a box shape. Are stored in the auxiliary contact point for sending out to the outside, a display board for displaying the open / close state, and a counter for counting the number of open / close operations. The drive shaft 12 of the electromagnet 11 can be freely rotated by the lever 13 for the electromagnetic operating device of the link mechanism 3 It is connected to the.

また、リンク機構部３は、図２に示すように、スプライン形シャフト１４に、主回路開閉用レバー９と電磁操作装置用レバー１３及び軸受け金具１５がそれぞれ嵌め込まれ、かつ、各レバー９、１３と軸受け金具１５が、配置を固定するパイプ１６で仕切られて、しかも、パイプ１６、各レバー９、１３の脱落を防止するための止め輪１７が、スプライン形シャフト１４の両端に配置され、主回路開閉用レバー９には操作用絶縁ロッド８が、電磁操作装置用レバー１３には電磁石１１の駆動軸１２が、それぞれ連結されている。   As shown in FIG. 2, the link mechanism unit 3 includes a spline shaft 14 in which a main circuit opening / closing lever 9, an electromagnetic operating device lever 13, and a bearing fitting 15 are fitted, and the levers 9, 13 are fitted. The bearing bracket 15 is partitioned by a pipe 16 for fixing the arrangement, and a retaining ring 17 for preventing the pipe 16 and the levers 9 and 13 from falling off is disposed at both ends of the spline shaft 14. An operating insulating rod 8 is connected to the circuit opening / closing lever 9, and a drive shaft 12 of an electromagnet 11 is connected to the electromagnetic operating device lever 13.

上述した構成により、電磁操作式開閉装置は、電磁石１１で発生する電磁力により、駆動軸１２を上下方向に駆動することができ、この駆動力がスプライン形シャフト１４を回転軸とするリンク機構部３の電磁操作装置用レバー１３と主回路開閉用レバー９を介して、主回路開閉部１に伝達することにより、接点の開状態と閉状態を切り替えている。   With the configuration described above, the electromagnetically operated switchgear can drive the drive shaft 12 in the vertical direction by the electromagnetic force generated by the electromagnet 11, and this drive force uses the spline-type shaft 14 as the rotation axis. 3 is transmitted to the main circuit opening / closing part 1 via the electromagnetic operating device lever 13 and the main circuit opening / closing lever 9, thereby switching the contact between the open state and the closed state.

そして、本実施例では、図２に示すように、スプライン形シャフト１４のケース奥行き方向（矢印Ｐ）の長さが、筺体フレーム底面板１８のケース奥行き方向（矢印Ｐ）の長さより短くなっており、上述した軸受け金具１５が、スプライン形シャフト１４の端部より内側に配置されている。具体的には、三相（Ｕ相、Ｖ相、Ｗ相）配置されている主回路開閉部１の相間（Ｕ相とＶ相の間及びＶ相とＷ相の間）に、軸受け金具１５がそれぞれ配置されている。   In this embodiment, as shown in FIG. 2, the length of the spline shaft 14 in the case depth direction (arrow P) is shorter than the length of the case frame bottom plate 18 in the case depth direction (arrow P). In addition, the above-described bearing fitting 15 is disposed inside the end portion of the spline shaft 14. Specifically, the bearing bracket 15 is provided between the phases (between the U phase and the V phase and between the V phase and the W phase) of the main circuit switching unit 1 arranged in three phases (U phase, V phase, W phase). Are arranged respectively.

この軸受け金具１５は、図２及び図３に示すように、筺体フレーム底面板１８と、ケース背面板１９と、開閉器固定板４の３点（（イ）、（ロ）、（ハ））でボルト等で固定されている。即ち、（イ）は、軸受け金具１５が開閉器固定板４とケース背面板１９に、（ロ）は、軸受け金具１５が筺体フレーム底面板１８に、（ハ）は、軸受け金具１５がケース背面板１９に、それぞれボルト等で固定されているものである。   As shown in FIGS. 2 and 3, the bearing bracket 15 has three points ((A), (B), (C)): a frame frame bottom plate 18, a case back plate 19, and a switch fixing plate 4. It is fixed with bolts. That is, (a) the bearing bracket 15 is on the switch fixing plate 4 and the case back plate 19, (b) the bearing bracket 15 is on the casing frame bottom plate 18, and (c) the bearing bracket 15 is on the case back. Each is fixed to the face plate 19 with a bolt or the like.

このような本実施例の電磁操作式開閉装置によれば、駆動力が加わる電磁操作装置用レバー１３と軸受け金具１５との距離（図２のｌ1及びｌ2）が短くなるため、スプライン形シャフト１４に働く曲げモーメントを小さくでき、駆動時に発生するスプライン形シャフト１４の撓みやねじりを抑制することができる。 According to the electromagnetically operated opening / closing device of this embodiment, the distance (l 1 and l 2 in FIG. 2 ) between the electromagnetic operating device lever 13 to which the driving force is applied and the bearing fitting 15 is shortened. The bending moment acting on the shaft 14 can be reduced, and the bending and torsion of the spline-type shaft 14 generated during driving can be suppressed.

従って、主回路開閉部１の重量、コスト、サイズを増加させることなく、安定した開閉動作を実現できる電磁操作式開閉装置を得ることができる。   Therefore, it is possible to obtain an electromagnetically operated switching device that can realize a stable switching operation without increasing the weight, cost, and size of the main circuit switching unit 1.

また、本実施例の軸受け金具１５は、筺体フレーム底面板１８と、ケース背面板１９と、開閉器固定板４の３点で固定されているため、筺体フレーム底面板１８とケース背面板１９及び開閉器固定板４は、軸受け金具１５で撓み強度が補強されることになり、駆動時に発生する主回路開閉部１を固定している開閉器固定板４と、電磁石１１を固定及び収納しているケース１０の撓みを抑制することができ、開閉動作速度が低減することなく、安定した開閉動作を実現できる。   Further, since the bearing fitting 15 of the present embodiment is fixed at three points of the frame frame bottom plate 18, the case back plate 19, and the switch fixing plate 4, the frame frame bottom plate 18, the case back plate 19, and The flexure strength of the switch fixing plate 4 is reinforced by the bearing bracket 15, and the switch fixing plate 4 that fixes the main circuit switch 1 generated during driving and the electromagnet 11 are fixed and stored. The case 10 can be prevented from bending, and a stable opening / closing operation can be realized without reducing the opening / closing operation speed.

上述した実施例では、主回路開閉部１の相間に軸受け金具１５を配置しているが、必ずしも主回路開閉部１の相間でなくでも良く、軸受け金具１５をスプライン形シャフト１４の端部より内側（三相のうちＵ相とＷ相の近く）に配置した場合でも同様な効果を得ることができる。   In the above-described embodiment, the bearing fitting 15 is disposed between the phases of the main circuit opening / closing portion 1, but the bearing fitting 15 may not necessarily be located between the phases of the main circuit opening / closing portion 1. The same effect can be obtained even when arranged in the vicinity of the U phase and the W phase among the three phases.

更に、上述した実施例１では、スプライン形シャフト１４の軸長であるケース奥行き方向（矢印Ｐ）の長さが、筺体フレーム底面板１８のケース奥行き方向（矢印Ｐ）の長さより短くなっている例について説明したが、スプライン形シャフト１４の軸長は、筺体フレーム底面板１８のケース奥行き寸法と同じであっても構わない。   Further, in the first embodiment described above, the length in the case depth direction (arrow P), which is the axial length of the spline shaft 14, is shorter than the length in the case depth direction (arrow P) of the housing frame bottom plate 18. Although the example has been described, the axial length of the spline-shaped shaft 14 may be the same as the case depth dimension of the housing frame bottom plate 18.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成を置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１…主回路開閉部、２…電磁操作装置、３…リンク機構部、４…開閉器固定板、５…固定側主回路導体、６…可撓導体、７…可動側主回路導体、８…操作用絶縁ロッド、９…主回路開閉用レバー、１０…ケース、１１…電磁石、１２…駆動軸、１３…駆動装置用レバー、１４…スプライン形シャフト、１５…軸受け金具、１６…パイプ、１７…止め輪、１８…筺体フレーム底面板、１９…ケース背面板。   DESCRIPTION OF SYMBOLS 1 ... Main circuit switching part, 2 ... Electromagnetic operating device, 3 ... Link mechanism part, 4 ... Switch fixing plate, 5 ... Fixed side main circuit conductor, 6 ... Flexible conductor, 7 ... Movable side main circuit conductor, 8 ... Insulating rod for operation, 9 ... Lever for opening / closing the main circuit, 10 ... Case, 11 ... Electromagnet, 12 ... Drive shaft, 13 ... Lever for drive device, 14 ... Spline shaft, 15 ... Bearing bracket, 16 ... Pipe, 17 ... Retaining ring, 18 ... frame frame bottom plate, 19 ... case back plate.

Claims (4)

電磁力に応じて可動鉄心と固定鉄心を離間又は接触させるコイルを有する電磁操作装置と、該電磁操作装置から発生した電磁力に伴う駆動力を可動ロッド、レバー、シャフト、絶縁ロッドから成るリンク機構部を介して接点同士が離間又は接触される開閉器部と、前記シャフトを支持する軸受け金具と、これらを収納支持する筐体フレームとを備え、
前記軸受け金具は、前記シャフトの端部より内側に配置され、前記筐体フレームの底面板と、前記電磁操作装置を収納支持するケースの背面板と、前記開閉器部を支持する固定板の３点で固定されていることを特徴とする電磁操作式開閉装置。 An electromagnetic operating device having a coil that separates or contacts the movable iron core and the fixed iron core according to the electromagnetic force, and a link mechanism comprising a movable rod, a lever, a shaft, and an insulating rod for driving force accompanying the electromagnetic force generated from the electromagnetic operating device A switch part in which the contacts are separated or contacted via the part, a bearing bracket for supporting the shaft, and a housing frame for storing and supporting them,
The bearing fitting is disposed inside the end of the shaft, and includes a bottom plate of the housing frame, a back plate of a case that houses and supports the electromagnetic operating device, and a fixing plate that supports the switch unit. An electromagnetically operated switchgear characterized by being fixed at a point . 請求項１に記載の電磁操作式開閉装置において、
前記軸受け金具は、二相配置の前記開閉器部の各相間に配置されていることを特徴とする電磁操作式開閉装置。 The electromagnetically operated switchgear according to claim 1,
The electromagnetically operated switchgear characterized in that the bearing fitting is arranged between each phase of the switch part of a two-phase arrangement. 請求項１又は２に記載の電磁操作式開閉装置おいて、
前記シャフトはスプライン形のシャフトであり、このスプライン形のシャフトに、前記開閉器部の駆動用レバーと前記電磁操作装置の駆動用レバー及び前記軸受け金具がそれぞれ嵌め込まれ、かつ、前記各レバーと前記軸受け金具が、パイプで仕切られていると共に、前記シャフトの両端には止め輪が配置されていることを特徴とする電磁操作式開閉装置。 In the electromagnetically operated switchgear according to claim 1 or 2 ,
The shaft is a spline-shaped shaft, and the driving lever of the switch, the driving lever of the electromagnetic operating device, and the bearing fitting are fitted into the spline-shaped shaft, respectively, and the lever and the lever An electromagnetically operated switchgear characterized in that a bearing fitting is partitioned by a pipe, and retaining rings are arranged at both ends of the shaft. 請求項１乃至３のいずれか１項に記載の電磁操作式開閉装置おいて、
前記シャフトの軸長は、ケースの奥行き寸法と同じか、或いは短いことを特徴とする電磁操作式開閉装置。 In the electromagnetically operated switchgear according to any one of claims 1 to 3 ,
An electromagnetically operated switchgear characterized in that the shaft length of the shaft is the same as or shorter than the depth of the case.
JP2012136480A 2012-06-18 2012-06-18 Electromagnetic switchgear Active JP5922507B2 (en)

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CN106158500B (en) * 2016-07-21 2018-11-20 新疆特变电工自控设备有限公司 The permanent-magnet breaker of included manual closing mechanism

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JPS5848316A (en) * 1981-09-17 1983-03-22 株式会社東芝 Circuit breaker
ATE112885T1 (en) * 1989-03-03 1994-10-15 Gec Alsthom T & D Ag SPRING OPERATION FOR A CIRCUIT BREAKER.
JPH1167022A (en) * 1997-08-12 1999-03-09 Fuji Electric Co Ltd Switch
JP2000340075A (en) * 1999-05-28 2000-12-08 Mitsubishi Electric Corp Breaker
JP3763094B2 (en) * 2002-10-30 2006-04-05 株式会社日立製作所 Electromagnetic operation device
JP2007087836A (en) * 2005-09-26 2007-04-05 Hitachi Ltd Gas-blast circuit breaker for electric power
CN102165553B (en) * 2008-12-02 2014-09-03 三菱电机株式会社 Electromagnetic contactor
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