JP7196804B2 - Disconnecting operation device for solid insulated switchgear - Google Patents

Disconnecting operation device for solid insulated switchgear Download PDF

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JP7196804B2
JP7196804B2 JP2019170176A JP2019170176A JP7196804B2 JP 7196804 B2 JP7196804 B2 JP 7196804B2 JP 2019170176 A JP2019170176 A JP 2019170176A JP 2019170176 A JP2019170176 A JP 2019170176A JP 7196804 B2 JP7196804 B2 JP 7196804B2
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聡 佐藤
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Meidensha Corp
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本発明は、断路器や開閉器などの固体絶縁開閉装置の断路部操作装置に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnecting section operating device for a solid insulated switchgear such as a disconnecting switch and a switch.

従来の固体絶縁開閉装置の断路部引出装置の一例を図３に示す。図３（ａ）は正面図、図３（ｂ）は左側面図である。図３において、１は車輪２を有する開閉装置、３はモーター、４は減速機構、５はクラッチ機構（機械的なクラッチ機構）、６はねじ軸である。モーター３の駆動時の回転力は減速機構４およびクラッチ機構５を介してねじ軸６に伝達される。 FIG. 3 shows an example of a disconnecting part drawing device of a conventional solid insulated switchgear. FIG. 3(a) is a front view, and FIG. 3(b) is a left side view. In FIG. 3, 1 is an opening and closing device having wheels 2, 3 is a motor, 4 is a reduction mechanism, 5 is a clutch mechanism (mechanical clutch mechanism), and 6 is a screw shaft. Rotational force generated when the motor 3 is driven is transmitted to the screw shaft 6 via the speed reduction mechanism 4 and the clutch mechanism 5 .

７は、例えば配電盤内の固定板８に固定された引出機構である。この引出機構７は、中空を有した筒体に構成され、固定板８とは反対側の端部には、内周部にめねじ部を有したナット９が設けられている。 Reference numeral 7 denotes a pull-out mechanism fixed to, for example, a fixed plate 8 in the switchboard. The pull-out mechanism 7 is configured as a hollow cylindrical body, and a nut 9 having an internal thread on the inner circumference is provided at the end opposite to the fixing plate 8 .

１１は、リミットスイッチを有し、開閉装置１が断路位置に到達したことを検出する断路位置検出器、１２は、リミットスイッチを有し、開閉装置１が接続位置に到達したことを検出する接続位置検出器である。 11 is a disconnection position detector having a limit switch and detecting that the switchgear 1 has reached the disconnection position; 12 is a connection having a limit switch and detecting that the switchgear 1 has reached the connection position; A position detector.

１３は、ナット９よりも若干固定板８側の引出機構７外周に設けられ、開閉装置１が接続位置に到達したときに接続位置検出器１２（のリミットスイッチ）が当接する当接板である。 A contact plate 13 is provided on the outer periphery of the drawer mechanism 7 slightly closer to the fixed plate 8 than the nut 9, and with which (the limit switch of) the connection position detector 12 contacts when the opening/closing device 1 reaches the connection position. .

開閉装置１のねじ軸６と引出機構７側のナット９は螺合状態にあり、開閉装置１に断路命令が入るとモーター３が一方の方向に回転し、その回転は減速機構４およびクラッチ機構５を介してねじ軸６に伝わり、ねじ軸６の回転によって開閉装置１は断路位置方向、すなわち引出機構７から離れる方向に移動する。 The screw shaft 6 of the opening/closing device 1 and the nut 9 on the drawer mechanism 7 side are screwed together. 5 to the screw shaft 6, and the rotation of the screw shaft 6 moves the opening/closing device 1 in the disconnecting position direction, that is, in the direction away from the drawer mechanism 7. As shown in FIG.

開閉装置１が断路位置に到達したことを断路位置検出器１１が検出すると、モーター３の電源が切れると同時にクラッチ機構５が切られることによりモーター３の回転はねじ軸６に伝わらなくなる。 When the disconnecting position detector 11 detects that the opening/closing device 1 has reached the disconnecting position, the power of the motor 3 is cut off and the clutch mechanism 5 is cut off at the same time, so that the rotation of the motor 3 is not transmitted to the screw shaft 6 .

これによってモーター３の惰性はねじ軸６に伝わらない構造であるが、しかし実際には開閉装置１を動かすためにモーター３の減速比を大きくとっていることから、クラッチ機構５を切ってもねじ軸６の惰性により回転は止まらず開閉装置１は動作する。断路操作においてはこの惰性を利用して、ねじ軸６がナット９から外れる位置まで動作することができる。 As a result, the inertia of the motor 3 is not transmitted to the screw shaft 6. However, since the reduction ratio of the motor 3 is set large in order to actually move the opening/closing device 1, even if the clutch mechanism 5 is disengaged, Due to the inertia of the shaft 6, the rotation does not stop and the opening/closing device 1 operates. In the disconnecting operation, this inertia can be used to move the screw shaft 6 to a position where it is disengaged from the nut 9 .

また接続操作時は、まずねじ軸６と、ばねで押されたナット９を螺合状態とした上で、接続命令によりモーター３を他方の方向に回転させ、ねじ軸６の回転によって開閉装置１を接続位置方向、すなわち引出機構７に近づく方向に移動させる。 In connection operation, the screw shaft 6 and the spring-loaded nut 9 are first screwed together, and then the motor 3 is rotated in the other direction by a connection command. is moved in the connection position direction, that is, in a direction approaching the drawer mechanism 7 .

開閉装置１が接続位置に到達してリミットスイッチが当接板１３に当接し、接続位置検出器１２が動作すると、前記断路操作の場合と同様に、モーター３の電源が切れると同時にクラッチ機構５が切られることによりモーター３の回転はねじ軸６に伝わらなくなり、開閉装置１は停止する。 When the switchgear 1 reaches the connection position, the limit switch comes into contact with the contact plate 13, and the connection position detector 12 operates, the power to the motor 3 is turned off and the clutch mechanism 5 is turned off, as in the case of the disconnection operation. When the switch is cut, the rotation of the motor 3 is no longer transmitted to the screw shaft 6, and the switchgear 1 stops.

尚、開閉装置１が断路位置に到達したら、図示省略の外部導体が、固定板８が固定される配電盤内の図示省略の母線から離れて断路状態となり、開閉装置１が接続位置に到達したら前記外部導体が前記母線に接続されて接続状態となる。 When the switchgear 1 reaches the disconnecting position, the external conductor (not shown) separates from the bus line (not shown) in the switchboard to which the fixing plate 8 is fixed and becomes disconnected. An external conductor is connected to the busbar to be in a connected state.

尚、従来の固体絶縁開閉装置の断路部引出装置は、例えば特許文献１、２に記載のものが提案されていた。 For example, Patent Documents 1 and 2 have proposed a disconnecting portion drawing device for a conventional solid insulated switchgear.

実開平５－９１１０８号公報Japanese Utility Model Laid-Open No. 5-91108 特許第２８７８７５０号公報Japanese Patent No. 2878750

しかしながら、図３に示す断路部引出装置は、機械的なクラッチ機構５を採用しているため、構造が複雑で部品点数が多く、大型化していた。また、例えば接続操作においてモーター３の電源を切っても、ねじ軸６の惰性により動作を止めることができない。このため、最終的にストッパーを取り付け、開閉装置１をストッパーに衝突させて止める構造とする必要があった。 However, since the disconnecting portion drawing device shown in FIG. 3 employs the mechanical clutch mechanism 5, the structure is complicated, the number of parts is large, and the size is large. Further, even if the power of the motor 3 is turned off during the connection operation, the motion cannot be stopped due to the inertia of the screw shaft 6 . For this reason, it is necessary to have a structure in which a stopper is finally attached and the opening/closing device 1 is stopped by colliding with the stopper.

本発明は、上記課題を解決するものであり、その目的は、機械的なクラッチ機構を不要とした固体絶縁開閉装置の断路部操作装置を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a disconnecting portion operating device for a solid insulated switchgear that eliminates the need for a mechanical clutch mechanism.

上記課題を解決するための請求項１に記載の固体絶縁開閉装置の断路部操作装置は、
モーターの回転力が減速機構を介して伝達され、断路部内のめねじと螺合するねじ軸を備えた固体絶縁開閉装置を、前記断路部の断路位置と接続位置の間で移動させて開閉操作を行う断路部操作装置であって、
前記開閉装置を断路位置に移動させる断路命令により動作する第１の電磁継電器の接点であって、一端が直流電源の正極端に接続され、断路命令が入力されたとき閉路し、開閉装置が断路位置に到達したとき開放される第１の電磁継電器の第１常開接点と、
前記開閉装置を接続位置に移動させる接続命令により動作する第２の電磁継電器の接点であって、一端が直流電源の正極端に接続され、接続命令が入力されたとき閉路し、開閉装置が接続位置に到達したとき開放される第２の電磁継電器の第１常開接点と、
一端が前記第１の電磁継電器の第１常開接点の他端に接続され、他端が直流電源の負極端に接続され、接続命令が入力されたとき閉路し、開閉装置が接続位置に到達したとき開放される第２の電磁継電器の第２常開接点と、
一端が前記第２の電磁継電器の第１常開接点の他端に接続され、他端が直流電源の負極端に接続され、断路命令が入力されたとき閉路し、開閉装置が断路位置に到達したとき開放される第１の電磁継電器の第２常開接点と、
前記第１の電磁継電器の第１常開接点および第２の電磁継電器の第２常開接点の共通接続点と、前記第２の電磁継電器の第１常開接点および第１の電磁継電器の第２常開接点の共通接続点との間に接続された前記モーターの巻線と、
一端が前記第１の電磁継電器の第１常開接点および第２の電磁継電器の第２常開接点の共通接続点に接続され、断路命令が入力されたとき開放され、開閉装置が断路位置に到達したとき閉路する前記第１の電磁継電器の常閉接点と、
一端が前記第１の電磁継電器の常閉接点の他端に接続された抵抗と、
カソードが前記抵抗の他端に接続されたダイオードと、
一端が前記ダイオードのアノードに接続され、他端が前記第２の電磁継電器の第１常開接点および第１の電磁継電器の第２常開接点の共通接続点に接続され、接続命令が入力されたとき開放され、開閉装置が接続位置に到達したとき閉路する前記第２の電磁継電器の常閉接点と、を備えたことを特徴としている。 In order to solve the above-mentioned problems, the solid insulated switchgear disconnecting section operating device according to claim 1,
Rotational force of the motor is transmitted through a speed reduction mechanism, and a solid insulated switchgear equipped with a threaded shaft that engages with a female thread in the disconnecting section is moved between the disconnecting position and the connecting position of the disconnecting section for opening and closing operation. A disconnecting section operating device for performing
A contact of a first electromagnetic relay that operates in response to a disconnection command for moving the switchgear to a disconnection position, one end of which is connected to the positive terminal of a DC power supply, and is closed when a disconnection command is input, and the switchgear is disconnected. a first normally open contact of the first electromagnetic relay that opens when the position is reached;
A contact of a second electromagnetic relay operated by a connection command for moving the switchgear to the connection position, one end of which is connected to the positive terminal of the DC power supply, and closed when the connection command is input, and the switchgear is connected. a first normally open contact of the second electromagnetic relay that opens when the position is reached;
One end is connected to the other end of the first normally open contact of the first electromagnetic relay, and the other end is connected to the negative terminal of the DC power supply. a second normally open contact of the second electromagnetic relay that is opened when
One end is connected to the other end of the first normally open contact of the second electromagnetic relay, the other end is connected to the negative terminal of the DC power supply, and when a disconnection command is input, the circuit is closed and the switchgear reaches the disconnection position. a second normally open contact of the first electromagnetic relay that is opened when
a common connection point between the first normally open contact of the first electromagnetic relay and the second normally open contact of the second electromagnetic relay; a winding of said motor connected between a common connection point of two normally open contacts;
One end is connected to the common connection point of the first normally open contact of the first electromagnetic relay and the second normally open contact of the second electromagnetic relay, and is opened when a disconnection command is input, and the switchgear is in the disconnection position. a normally closed contact of the first electromagnetic relay that closes when reached;
a resistor having one end connected to the other end of the normally closed contact of the first electromagnetic relay;
a diode whose cathode is connected to the other end of the resistor;
One end is connected to the anode of the diode, the other end is connected to a common connection point of the first normally open contact of the second electromagnetic relay and the second normally open contact of the first electromagnetic relay, and a connection command is input. and a normally closed contact of the second electromagnetic relay which is opened when the switching device reaches the connection position and which is closed when the switching device reaches the connection position.

本発明によれば、電気的制動回路の採用により、機械的なクラッチ機構を不要としたので、部品点数を削減し小型化を図ることができる。また、接続動作時はモーター電源切後に発電制動による電流を流すことができ、惰性無く開閉装置を停止させることが可能である。 According to the present invention, the use of an electric braking circuit eliminates the need for a mechanical clutch mechanism, so the number of parts can be reduced and miniaturization can be achieved. In addition, during the connection operation, the electric current can be applied by dynamic braking after the motor power is turned off, and the switchgear can be stopped without inertia.

本発明の実施形態例による固体絶縁開閉装置の断路部操作装置の機械的構成を示し、（ａ）は正面図、（ｂ）は左側面図。BRIEF DESCRIPTION OF THE DRAWINGS The mechanical structure of the disconnection part operating device of the solid insulated switchgear by the example of embodiment of this invention is shown, (a) is a front view, (b) is a left side view. 本発明の実施形態例による固体絶縁開閉装置の断路部操作装置の電気的ブレーキ回路を示す回路図。1 is a circuit diagram showing an electric brake circuit of a disconnecting portion operating device of a solid insulated switchgear according to an embodiment of the present invention; FIG. 従来の固体絶縁開閉装置の断路部引出装置の機械的構成を示し、（ａ）は正面図、（ｂ）は左側面図。The mechanical structure of the disconnection part drawing-out apparatus of the conventional solid insulated switchgear is shown, (a) is a front view, (b) is a left side view.

以下、図面を参照しながら本発明の実施の形態を説明するが、本発明は下記の実施形態例に限定されるものではない。本実施形態例では、従来用いられていたクラッチ機構を削除した機械的構造とし、断路部の接続操作時は発電制動を利用して惰性無く開閉装置を停止させ、断路操作時は惰性を利用して開閉装置を動作させることができる電気的回路構成とした。 Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiment examples. In this embodiment, the conventionally used clutch mechanism is removed and a mechanical structure is used. When the disconnecting portion is operated to connect, the switching device is stopped without inertia by using power generation braking, and when the disconnecting operation is performed, inertia is used. The electrical circuit configuration is such that the switchgear can be operated by

図１は、本実施形態例による固体絶縁開閉装置の断路部操作装置の機械的構成を示し、（ａ）は正面図、（ｂ）は左側面図である。図１において、図３と同一部分は同一符号をもって示している。 FIG. 1 shows the mechanical configuration of a disconnecting portion operating device for a solid insulated switchgear according to this embodiment, where (a) is a front view and (b) is a left side view. In FIG. 1, the same parts as in FIG. 3 are indicated by the same reference numerals.

図１において図３と異なる点は、開閉装置１中のクラッチ機構５を削除して開閉装置１０を構成したことにあり、その他の部分は図３と同様に構成されている。すなわち、モーター３の回転力は減速機構４を介してねじ軸６に伝達されるように構成している。 1 differs from FIG. 3 in that the clutch mechanism 5 in the opening/closing device 1 is removed to form the opening/closing device 10, and other parts are constructed in the same manner as in FIG. That is, the rotational force of the motor 3 is transmitted to the screw shaft 6 via the speed reduction mechanism 4 .

尚、開閉装置１０が断路位置に到達するとねじ軸６はナット９から外れるが、ねじ軸６の先端をナット９の先端部に接した状態を保持させる、図示省略のバネ機構を備えているものとする。 Although the screw shaft 6 is removed from the nut 9 when the opening/closing device 10 reaches the disconnecting position, a spring mechanism (not shown) is provided to keep the tip of the screw shaft 6 in contact with the tip of the nut 9. and

図２は、本実施形態例による固体絶縁開閉装置の断路部操作装置の電気的なブレーキ回路の回路図を表し、（ａ）は停止状態、（ｂ）は断路動作、（ｃ）は接続動作、（ｄ）は接続動作での発電制動における各回路状態を示している。 FIG. 2 shows a circuit diagram of an electric brake circuit of a disconnecting portion operating device of a solid insulated switchgear according to this embodiment, in which (a) is a stopped state, (b) is a disconnecting operation, and (c) is a connecting operation. , (d) show each circuit state in dynamic braking in connection operation.

図２において、８９ＣＸａ1は、図１の開閉装置１０を断路位置に移動させる断路命令により動作する８９ＣＸリレー（第１の電磁継電器）の接点であって、一端が図示省略の直流電源の正極端に接続され、断路命令が入力されたとき閉路し、開閉装置１０が断路位置に到達したとき開放される８９ＣＸリレーの常開接点（第１常開接点）である。 In FIG. 2, 89CXa 1 is a contact of an 89CX relay (first electromagnetic relay) that operates in response to a disconnection command for moving the switchgear 10 of FIG. 1 to the disconnection position. is a normally open contact (first normally open contact) of the 89CX relay which is connected to , is closed when a disconnection command is input, and is opened when the switching device 10 reaches the disconnection position.

８９ＴＸａ1は、前記開閉装置１０を接続位置に移動させる接続命令により動作する８９ＴＸリレー（第２の電磁継電器）の接点であって、一端が図示省略の直流電源の正極端に接続され、接続命令が入力されたとき閉路し、開閉装置１０が接続位置に到達したとき開放される８９ＴＸリレーの常開接点（第１常開接点）である。 89TXa 1 is a contact of an 89TX relay (second electromagnetic relay) that operates in response to a connection command for moving the switchgear 10 to the connection position. is input, and the normally open contact (first normally open contact) of the 89TX relay is opened when the switching device 10 reaches the connected position.

８９ＴＸａ2は、一端が前記８９ＣＸリレーの常開接点８９ＣＸａ1の他端に接続され、他端が８９ＴＸリレーの常開接点８９ＴＸａ3を介して図示省略の直流電源の負極端に接続された、８９ＴＸリレーの常開接点である。 89TXa2 has one end connected to the other end of the normally open contact 89CXa1 of the 89CX relay, and the other end connected to the negative terminal of the DC power supply (not shown) via the normally open contact 89TXa3 of the 89TX relay. This is the normally open contact of the relay.

これら８９ＴＸリレーの常開接点８９ＴＸａ2、８９ＴＸａ3は、接続命令が入力されたとき閉路し、開閉装置１０が接続位置に到達したとき開放される接点である。 The normally open contacts 89TXa 2 and 89TXa 3 of these 89TX relays are contacts that are closed when a connection command is input and are opened when the switching device 10 reaches the connection position.

８９ＣＸａ2は、一端が前記８９ＴＸリレーの常開接点８９ＴＸａ1の他端に接続され、他端が８９ＣＸリレーの常開接点８９ＣＸａ3を介して図示省略の直流電源の負極端に接続された、８９ＣＸリレーの常開接点である。 89CXa 2 has one end connected to the other end of the normally open contact 89TXa 1 of the 89TX relay, and the other end connected to the negative terminal of the DC power supply (not shown) via the normally open contact 89CXa 3 of the 89CX relay. This is the normally open contact of the relay.

これら８９ＣＸリレーの常開接点８９ＣＸａ2、８９ＣＸａ3は、断路命令が入力されたとき閉路し、開閉装置１０が断路位置に到達したとき開放される接点である。 The normally open contacts 89CXa 2 and 89CXa 3 of these 89CX relays are contacts which are closed when a disconnection command is input and are opened when the switching device 10 reaches the disconnection position.

前記常開接点８９ＣＸａ2、８９ＣＸａ3によって本発明の８９ＣＸリレー（第１の電磁継電器）の第２常開接点を構成し、前記常開接点８９ＴＸａ2、８９ＴＸａ3によって本発明の８９ＴＸリレー（第２の電磁継電器）の第２常開接点を構成している。 The normally open contacts 89CXa 2 and 89CXa 3 constitute a second normally open contact of the 89CX relay (first electromagnetic relay) of the present invention, and the normally open contacts 89TXa 2 and 89TXa 3 constitute a second normally open contact of the 89TX relay (second electromagnetic relay) of the present invention. electromagnetic relay) constitutes the second normally open contact.

８９Ｍは、８９ＣＸリレーの常開接点８９ＣＸａ1および８９ＴＸリレーの常開接点８９ＴＸａ2の共通接続点と、８９ＴＸリレーの常開接点８９ＴＸａ1および８９ＣＸリレーの常開接点８９ＣＸａ2の共通接続点との間に接続された前記モーター３の巻線である。 89M is between the common connection point of the normally open contacts 89CXa1 of the 89CX relay and the normally open contact 89TXa2 of the 89TX relay, and the common connection point of the normally open contacts 89TXa1 of the 89TX relay and the normally open contacts 89CXa2 of the 89CX relay. is the winding of the motor 3 connected to .

８９ＣＸｂは、一端が８９ＣＸリレーの常開接点８９ＣＸａ1および８９ＴＸリレーの常開接点８９ＴＸａ2の共通接続点に接続され、断路命令が入力されたとき開放され、開閉装置１０が断路位置に到達したとき閉路する８９ＣＸリレーの常閉接点である。 One end of 89CXb is connected to the common connection point of the normally open contact 89CXa 1 of the 89CX relay and the normally open contact 89TXa 2 of the 89TX relay, and is opened when a disconnection command is input, and when the switchgear 10 reaches the disconnection position. It is the normally closed contact of the 89CX relay that closes the circuit.

８９Ｒは、一端が前記常閉接点８９ＣＸｂの他端に接続された抵抗である。Ｄは、カソードが前記抵抗８９Ｒの他端に接続されたダイオードである。 89R is a resistor one end of which is connected to the other end of the normally closed contact 89CXb. D is a diode whose cathode is connected to the other end of the resistor 89R.

８９ＴＸｂは、一端が前記ダイオードＤのアノードに接続され、他端が前記常開接点８９ＴＸａ1および常開接点８９ＣＸａ2の共通接続点に接続され、接続命令が入力されたとき開放され、開閉装置１０が接続位置に到達したとき閉路する８９ＴＸリレーの常閉接点である。 89TXb has one end connected to the anode of the diode D and the other end connected to the common connection point of the normally open contacts 89TXa 1 and 89CXa 2 . is the normally closed contact of the 89TX relay which closes when the is in the connected position.

尚、開閉装置１０が断路位置に到達したことは、図１の断路位置検出器１１によって検出され、開閉装置が接続位置に到達したことは図１の接続位置検出器１２によって検出されるものである。 The arrival of the switchgear 10 at the disconnected position is detected by the disconnection position detector 11 in FIG. 1, and the arrival of the switchgear at the connection position is detected by the connection position detector 12 in FIG. be.

まず、開閉装置１０のねじ軸６と引出機構７側のナット９が螺合しており、各リレーの接点は図２（ａ）の停止状態にあるものとする。この状態で開閉装置１０に断路命令が入ると８９ＣＸリレーが動作してその常開接点８９ＣＸａ1～８９ＣＸａ3が図２（ｂ）のように閉路され、常閉接点８９ＣＸｂは開放され、モーター３の巻線８９Ｍには図示矢印方向の電流が流れる。 First, it is assumed that the screw shaft 6 of the opening/closing device 10 and the nut 9 of the drawer mechanism 7 are screwed together, and the contacts of each relay are in the stop state shown in FIG. 2(a). In this state, when a disconnection command is input to the switchgear 10, the 89CX relay operates and its normally open contacts 89CXa 1 to 89CXa 3 are closed as shown in FIG. A current flows through the winding 89M in the direction of the arrow shown.

これによってモーター３が駆動され、一方向への回転は減速機構４を介してねじ軸６に伝わり、ねじ軸６の回転によって開閉装置１０は断路位置方向、すなわち引出機構７から離れる方向に移動する。 As a result, the motor 3 is driven, the rotation in one direction is transmitted to the screw shaft 6 via the reduction mechanism 4, and the rotation of the screw shaft 6 causes the opening/closing device 10 to move in the disconnecting position direction, that is, in the direction away from the drawer mechanism 7. .

開閉装置１０が断路位置に到達したことを断路位置検出器１１が検出する（例えば断路位置検出器１１のリミットスイッチが、断路位置に設けられた凸部に当接することにより検出する）と、８９ＣＸリレーの常開接点８９ＣＸａ1～８９ＣＸａ3は開放され、これによってモーター３の電源は切断される。 When the disconnecting position detector 11 detects that the switchgear 10 has reached the disconnecting position (for example, when the limit switch of the disconnecting position detector 11 contacts a protrusion provided at the disconnecting position), 89CX. The normally open contacts 89CXa 1 to 89CXa 3 of the relay are opened, thereby cutting off the power of the motor 3 .

このとき、モーター３の巻線８９Ｍには発電制動の電流が流れるが、ダイオードＤにより一方向しか流れないため発電制動によるブレーキはかからず、ねじ軸６は惰性により動作し、ナット９から外れる位置まで開閉装置１０は動作する。 At this time, a current for dynamic braking flows through the winding 89M of the motor 3, but since it flows only in one direction due to the diode D, braking by dynamic braking is not applied, and the screw shaft 6 moves by inertia and comes off the nut 9. The opening/closing device 10 operates up to the position.

尚、ねじ軸６がナット９から外れても図示省略のバネ機構により、ねじ軸６の先端はナット９の先端側に接した状態にある。 Even if the screw shaft 6 is separated from the nut 9, the tip of the screw shaft 6 is kept in contact with the tip side of the nut 9 by a spring mechanism (not shown).

次に開閉装置１０に接続命令が入ると８９ＴＸリレーが動作し、その常開接点８９ＴＸａ1～８９ＴＸａ3が図２（ｃ）のように閉路され、常閉接点８９ＴＸｂは開放され、モーター３の巻線８９Ｍには図２（ｂ）の断路動作時とは逆方向の電流が流れる。 Next, when the switching device 10 receives a connection command, the 89TX relay operates, its normally open contacts 89TXa 1 to 89TXa 3 are closed as shown in FIG. A current flows in the line 89M in a direction opposite to that during the disconnection operation in FIG. 2(b).

これによってモーター３の他方向への回転は減速機構４を介してねじ軸６に伝わり、ねじ軸６はナット９と螺合され、ねじ軸６の回転によって開閉装置１０は接続位置方向、すなわち引出機構７に近づく方向に移動する。 As a result, the rotation of the motor 3 in the other direction is transmitted to the screw shaft 6 via the speed reduction mechanism 4, the screw shaft 6 is screwed with the nut 9, and the rotation of the screw shaft 6 moves the opening/closing device 10 toward the connection position, that is, the pull-out direction. It moves toward the mechanism 7 .

開閉装置１０が接続位置に到達したことを、接続位置検出器１２が検出する（例えば接続位置検出器１２のリミットスイッチが当接板１３に当接することにより検出する）と、８９ＴＸリレーの常開接点８９ＴＸａ1～８９ＴＸａ3は図２（ｄ）のように開放され、常閉接点８９ＴＸｂは閉路され、これによってモーター３の電源は切断される。 When the connection position detector 12 detects that the switchgear 10 has reached the connection position (for example, when the limit switch of the connection position detector 12 contacts the contact plate 13), the 89TX relay is normally open. The contacts 89TXa 1 to 89TXa 3 are opened as shown in FIG. 2(d), the normally closed contact 89TXb is closed, and the power supply to the motor 3 is cut off.

これと同時にモーター３の発電制動により電流が逆方向に流れ（図２（ｄ）の矢印で示す、巻線８９Ｍ→常閉接点８９ＴＸｂ→ダイオードＤのアノード、カソード→抵抗８９Ｒ→常閉接点８９ＣＸｂ→巻線８９Ｍのループで流れ）、モーター３にブレーキがかかり、開閉装置１０は停止する。 At the same time, a current flows in the opposite direction due to the dynamic braking of the motor 3 (indicated by the arrows in FIG. 2(d), the winding 89M → the normally closed contact 89TXb → the anode and cathode of the diode D → the resistor 89R → the normally closed contact 89CXb → flow in the loop of the winding 89M), the motor 3 is braked, and the switchgear 10 stops.

上記のように図２のダイオードＤによって、開閉装置１０が断路位置に到達した時はモーター３に発電制動電流が流れないように電流を阻止し（図２（ｂ））、開閉装置１０が接続位置に到達したときはモーター３に発電制動電流が流れる（図２（ｄ））ような回路を構成している。 As described above, when the switching device 10 reaches the disconnected position, the diode D in FIG. A circuit is constructed such that a dynamic braking current flows to the motor 3 when it reaches the position (FIG. 2(d)).

以上のように本実施形態例によれば、従来構造の機械クラッチ方式から電気ブレーキ回路方式に変更し、またブレーキ回路にはダイオードを挿入して一方向しか電流を流さない回路構成としたので、断路動作側は惰性の利用により、ねじ軸６がナット９から抜けるまで動作させることができ、接続動作側は発電制動の利用により、惰性無く開閉装置１０を止めることができる。 As described above, according to this embodiment, the mechanical clutch system of the conventional structure is changed to an electric brake circuit system, and a diode is inserted in the brake circuit to provide a circuit configuration in which current flows only in one direction. The disconnection operation side can operate until the screw shaft 6 is pulled out of the nut 9 by using inertia, and the connection operation side can stop the switching device 10 without inertia by using power generation braking.

これによって、従来の機械クラッチ方式の利点（惰性によりねじ軸６をナット９から外すことができる点）を利用し、欠点（部品点数が多く、大型化する点）を無くすことができた。 As a result, the advantages of the conventional mechanical clutch system (the screw shaft 6 can be removed from the nut 9 by inertia) can be used, and the disadvantages (the number of parts and the large size) can be eliminated.

２…車輪
３…モーター
４…減速機構
６…ねじ軸
７…引出機構
８…固定板
９…ナット
１０…開閉装置
１１…断路位置検出器
１２…接続位置検出器
１３…当接板
８９Ｍ…モーターの巻線
８９ＣＸａ1～８９ＣＸａ3…８９ＣＸリレーの常開接点
８９ＣＸｂ…８９ＣＸリレーの常閉接点
８９ＴＸａ1～８９ＴＸａ3…８９ＴＸリレーの常開接点
８９ＴＸｂ…８９ＴＸリレーの常閉接点
８９Ｒ…抵抗
Ｄ…ダイオード DESCRIPTION OF SYMBOLS 2... Wheel 3... Motor 4... Reduction mechanism 6... Screw shaft 7... Drawer mechanism 8... Fixed plate 9... Nut 10... Opening/closing device 11... Disconnection position detector 12... Connection position detector 13... Contact plate 89M... Motor's Winding 89CXa 1 to 89CXa 3 … normally open contact of 89CX relay 89CXb … normally closed contact of 89CX relay 89TXa 1 to 89TXa 3 … normally open contact of 89TX relay 89TXb … normally closed contact of 89TX relay 89R … resistor D … diode

Claims (1)

モーターの回転力が減速機構を介して伝達され、断路部内のめねじと螺合するねじ軸を備えた固体絶縁開閉装置を、前記断路部の断路位置と接続位置の間で移動させて開閉操作を行う断路部操作装置であって、
前記開閉装置を断路位置に移動させる断路命令により動作する第１の電磁継電器の接点であって、一端が直流電源の正極端に接続され、断路命令が入力されたとき閉路し、開閉装置が断路位置に到達したとき開放される第１の電磁継電器の第１常開接点と、
前記開閉装置を接続位置に移動させる接続命令により動作する第２の電磁継電器の接点であって、一端が直流電源の正極端に接続され、接続命令が入力されたとき閉路し、開閉装置が接続位置に到達したとき開放される第２の電磁継電器の第１常開接点と、
一端が前記第１の電磁継電器の第１常開接点の他端に接続され、他端が直流電源の負極端に接続され、接続命令が入力されたとき閉路し、開閉装置が接続位置に到達したとき開放される第２の電磁継電器の第２常開接点と、
一端が前記第２の電磁継電器の第１常開接点の他端に接続され、他端が直流電源の負極端に接続され、断路命令が入力されたとき閉路し、開閉装置が断路位置に到達したとき開放される第１の電磁継電器の第２常開接点と、
前記第１の電磁継電器の第１常開接点および第２の電磁継電器の第２常開接点の共通接続点と、前記第２の電磁継電器の第１常開接点および第１の電磁継電器の第２常開接点の共通接続点との間に接続された前記モーターの巻線と、
一端が前記第１の電磁継電器の第１常開接点および第２の電磁継電器の第２常開接点の共通接続点に接続され、断路命令が入力されたとき開放され、開閉装置が断路位置に到達したとき閉路する前記第１の電磁継電器の常閉接点と、
一端が前記第１の電磁継電器の常閉接点の他端に接続された抵抗と、
カソードが前記抵抗の他端に接続されたダイオードと、
一端が前記ダイオードのアノードに接続され、他端が前記第２の電磁継電器の第１常開接点および第１の電磁継電器の第２常開接点の共通接続点に接続され、接続命令が入力されたとき開放され、開閉装置が接続位置に到達したとき閉路する前記第２の電磁継電器の常閉接点と、
を備えたことを特徴とする固体絶縁開閉装置の断路部操作装置。 Rotational force of the motor is transmitted through a speed reduction mechanism, and a solid insulated switchgear equipped with a threaded shaft that engages with a female thread in the disconnecting section is moved between the disconnecting position and the connecting position of the disconnecting section for opening and closing operation. A disconnecting section operating device for performing
A contact of a first electromagnetic relay that operates in response to a disconnection command for moving the switchgear to a disconnection position, one end of which is connected to the positive terminal of a DC power supply, and is closed when a disconnection command is input, and the switchgear is disconnected. a first normally open contact of the first electromagnetic relay that opens when the position is reached;
A contact of a second electromagnetic relay operated by a connection command for moving the switchgear to the connection position, one end of which is connected to the positive terminal of the DC power supply, and closed when the connection command is input, and the switchgear is connected. a first normally open contact of the second electromagnetic relay that opens when the position is reached;
One end is connected to the other end of the first normally open contact of the first electromagnetic relay, and the other end is connected to the negative terminal of the DC power supply. a second normally open contact of the second electromagnetic relay that is opened when
One end is connected to the other end of the first normally open contact of the second electromagnetic relay, the other end is connected to the negative terminal of the DC power supply, and when a disconnection command is input, the circuit is closed and the switchgear reaches the disconnection position. a second normally open contact of the first electromagnetic relay that is opened when
a common connection point between the first normally open contact of the first electromagnetic relay and the second normally open contact of the second electromagnetic relay; a winding of said motor connected between a common connection point of two normally open contacts;
One end is connected to the common connection point of the first normally open contact of the first electromagnetic relay and the second normally open contact of the second electromagnetic relay, and is opened when a disconnection command is input, and the switchgear is in the disconnection position. a normally closed contact of the first electromagnetic relay that closes when reached;
a resistor having one end connected to the other end of the normally closed contact of the first electromagnetic relay;
a diode whose cathode is connected to the other end of the resistor;
One end is connected to the anode of the diode, the other end is connected to a common connection point of the first normally open contact of the second electromagnetic relay and the second normally open contact of the first electromagnetic relay, and a connection command is input. a normally closed contact of the second electromagnetic relay that is opened when the switching device reaches the connection position and is closed when the switching device reaches the connection position;
A disconnecting section operating device for a solid insulated switchgear, comprising:
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JP5471613B2 (en) 2010-03-05 2014-04-16 セイコーエプソン株式会社 Projector, projection unit and electronic blackboard

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JPS5215974A (en) * 1975-07-28 1977-02-05 Shingo Kizai Kk Stop device at designated position of belt state element
JPS5852877Y2 (en) * 1977-10-31 1983-12-01 三菱電機株式会社 Motor dynamic braking circuit
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Publication number Priority date Publication date Assignee Title
US4179646A (en) 1978-03-24 1979-12-18 General Electric Company Control circuit for circuit breaker DC motor operator
JP5215974B2 (en) 2009-08-07 2013-06-19 リットファスト コーポレイション Capacitive touch panel
JP5471613B2 (en) 2010-03-05 2014-04-16 セイコーエプソン株式会社 Projector, projection unit and electronic blackboard
CN103633891A (en) 2013-11-14 2014-03-12 河南平高东芝高压开关有限公司 Prompt braking device of three-station isolation grounding switch operating mechanism motor

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