JP5604414B2 - Spring actuator for circuit breaker and circuit breaker - Google Patents

Spring actuator for circuit breaker and circuit breaker Download PDF

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JP5604414B2
JP5604414B2 JP2011279326A JP2011279326A JP5604414B2 JP 5604414 B2 JP5604414 B2 JP 5604414B2 JP 2011279326 A JP2011279326 A JP 2011279326A JP 2011279326 A JP2011279326 A JP 2011279326A JP 5604414 B2 JP5604414 B2 JP 5604414B2
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spring
circuit breaker
lever
closing
operating device
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JP2013131354A (en
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裕明 橋本
健一 大久保
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Hitachi Ltd
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Hitachi Ltd
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    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/046—Enhanced legend space by smaller actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/044—High voltage application

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

Description

本発明は遮断器用ばね操作器及び遮断器に係り、特に、電力系統の変電所や開閉所などの高電圧仕様の電力用に好適な遮断器用ばね操作器及び遮断器に関する。   The present invention relates to a circuit breaker spring actuator and a circuit breaker, and more particularly to a circuit breaker spring actuator and a circuit breaker suitable for high voltage power such as a power station substation or switch.

送電系統の大容量化に伴い、変電所や開閉所に用いられる遮断器の遮断容量が増加し、かつ、高い信頼性が要求されている。遮断器の信頼性を高めるには、部品数を少なくし、構造を簡素化することが重要である。   With the increase in capacity of power transmission systems, the breaking capacity of circuit breakers used in substations and switching stations has increased, and high reliability is required. To increase the reliability of the circuit breaker, it is important to reduce the number of parts and simplify the structure.

通常、大容量遮断器には、パッファ形ガス遮断器が使用されるが、このパッファ形ガス遮断器は、遮断時に発生するアークにガスを吹き付けて消孤する構造であり、遮断部の構造が簡単な上に、封入された絶縁性のガス、例えばＳＦ６ガスによる優れた絶縁、消孤性能を有することが知られている。 Normally, a puffer type gas circuit breaker is used for a large capacity circuit breaker, but this puffer type gas circuit breaker has a structure in which gas is blown to an arc generated at the time of interruption and is extinguished. In addition to being simple, it is known to have excellent insulation and quenching performance with an enclosed insulating gas such as SF 6 gas.

パッファ形ガス遮断器は、ＳＦ６ガスが封入され固定電極と可動電極とを有する遮断部と、前記可動電極を固定電極に対して接触及び開離させるための駆動源を有する操作器とで構成されている。遮断部において、前記可動電極と固定電極は対向して設けられており、可動電極と固定電極が接触している状態で通電される。 The puffer-type gas circuit breaker is composed of a cut-off portion that is filled with SF 6 gas and has a fixed electrode and a movable electrode, and an operating device that has a drive source for bringing the movable electrode into contact with and separating from the fixed electrode. Has been. In the blocking part, the movable electrode and the fixed electrode are provided opposite to each other, and energized while the movable electrode and the fixed electrode are in contact with each other.

そして、例えば落雷などで電力系統に異常電流が流れると、遮断器に遮断指令が入力され、前記操作器の駆動力をもって、固定電極から可動電極を引離して電流を遮断する操作が行われる。   When an abnormal current flows through the power system due to lightning, for example, an interruption command is input to the circuit breaker, and an operation for cutting off the current by separating the movable electrode from the fixed electrode is performed with the driving force of the operation device.

操作器の駆動源としては、高圧油圧、加圧空気圧、金属ばねを用いることが一般的であり、この中で駆動源に金属ばねを用いるばね操作器は、周囲温度条件に影響されず、安定して駆動エネルギーを保持可能なため、３００ｋＶを越える超々高圧クラスにまで適用されるようになっている。   As a drive source of the operating device, it is common to use a high pressure hydraulic pressure, a pressurized air pressure, or a metal spring. Among them, the spring operating device using a metal spring as the driving source is not affected by ambient temperature conditions and is stable. Since the drive energy can be held, the ultra-high pressure class exceeding 300 kV is applied.

ガス遮断器に適用している従来のばね操作器は、例えば特許文献１に記載されている。特許文献１に記載のばね操作器は、以下の如く構成される。   A conventional spring operating device applied to a gas circuit breaker is described in Patent Document 1, for example. The spring operating device described in Patent Document 1 is configured as follows.

即ち、カム軸及び主軸と、前記カム軸の一方側に設けられたカムと、電動機の駆動力を前記カム軸に伝達すると共に、前記カム軸の他方側に設けられ、かつ、投入ばねの駆動力が伝達される主ギアと、前記カムの荷重が伝達されると共に、前記主軸の一方側に設けられ、かつ前記投入ばねの駆動力を遮断ばねに伝達する主レバーと、前記投入ばねの駆動力を緩衝装置に伝達すると共に、前記主軸の他方側に設けられた緩衝レバー或いは前記投入ばねの駆動力を開閉器の接点に伝達すると共に、前記主軸の他方側に設けられた接点レバーとを備え、前記カム軸は、前記カムと前記主ギア間で１つの軸受装置によってブラケットに支持され、前記主軸は、前記主レバーと前記緩衝レバー或いは前記接点レバー間で１つの軸受装置によってブラケットに支持されているものである。   That is, the camshaft and the main shaft, the cam provided on one side of the camshaft, and the driving force of the electric motor are transmitted to the camshaft, provided on the other side of the camshaft, and driven by the closing spring. A main gear for transmitting force, a load for the cam, a main lever provided on one side of the main shaft and transmitting the driving force of the closing spring to a cutoff spring, and driving of the closing spring A force is transmitted to the shock absorber, a buffer lever provided on the other side of the main shaft or a driving force of the closing spring is transmitted to the contact of the switch, and a contact lever provided on the other side of the main shaft. The cam shaft is supported by a bracket between the cam and the main gear by a single bearing device, and the main shaft is bracketed by a single bearing device between the main lever and the buffer lever or the contact lever. Those supported by the.

特許第３８２３６７６号公報Japanese Patent No. 3823676

上記特許文献１に記載のばね操作器では、主軸に対して主レバー、緩衝レバー、接点レバーの３つのレバーが設けられている。特に、主レバーは、回転軸心から三方向に羽根部が延在した略Ｙ字形状に構成されている。このため、主レバーの重心位置は回転軸心から所定の距離の位置にあり、主レバーの回転軸心周りの慣性モーメントが重心周りの慣性モーメントより大きくなり（平行軸の定理）、遮断動作時の主レバーの回動速度の増加が困難になる可能性がある。   In the spring operating device described in Patent Document 1, three levers, ie, a main lever, a buffer lever, and a contact lever, are provided on the main shaft. In particular, the main lever is configured in a substantially Y shape in which a blade portion extends in three directions from the rotation axis. For this reason, the center of gravity of the main lever is at a predetermined distance from the center of rotation, and the moment of inertia around the center of rotation of the main lever is greater than the moment of inertia around the center of gravity (parallel axis theorem). It may be difficult to increase the rotation speed of the main lever.

また、主レバーに作用する遮断及び投入の駆動力を、主軸の捻りを介して接点レバーに伝達するため、主軸のねじり剛性が小さい場合には、駆動力の伝達ロスが増加して接点の移動速度が低下する可能性がある。   In addition, because the driving force for blocking and closing acting on the main lever is transmitted to the contact lever via the main shaft torsion, if the main shaft has low torsional rigidity, the transmission loss of the driving force increases and the contact moves. The speed may be reduced.

更に、主軸の軸線方向の３箇所にレバーが配置されているので、操作器の幅方向寸法の縮小を図れない課題もある。   Further, since the levers are arranged at three positions in the axial direction of the main shaft, there is a problem that the size in the width direction of the operating device cannot be reduced.

本発明は上述の点に鑑みなされたもので、その目的とするところは、接点移動の高速化が図れると共に、信頼性が向上し、しかも、部品点数を低減して小形化が図れる遮断器用ばね操作器及び遮断器を提供することにある。   SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to increase the speed of contact movement, improve reliability, and reduce the number of parts and reduce the size of the circuit breaker spring. It is to provide an operating device and a circuit breaker.

本発明の遮断器用ばね操作器は、上記目的を達成するために、電力の遮断と投入を行うために遮断部の固定接触子と可動接触子を開閉する遮断ばね及び投入ばねと、該投入ばねの駆動力が投入ばねリンクを介して伝達されるカムと、該カムの荷重が伝達されると共に、該カムの駆動力が伝達される主軸に取り付けられている主レバーと、該主レバーから前記遮断ばね及び投入ばねの駆動力が伝達されるリンクと、前記遮断ばねの駆動力が保持、解放される遮断制御機構とを備えた遮断器用ばね操作器において、前記主レバーは２つの板材から成ると共に、四方向に羽根部が延在され、かつ、この四方向に羽根部が延在した前記主レバーに、前記主レバーの２つの板材に挟まれ前記遮断部の投入動作時に前記カムと接触する第１のローラと、前記主レバーの２つの板材の間に前記リンクを接続する第１のピンと、前記主レバーの２つの板材の間に前記遮断ばねの駆動力を伝達する遮断ばねリンクを接続する第２のピンと、前記主レバーの２つの板材に挟まれ前記遮断制御機構に前記遮断ばねの駆動力を伝達する第２のローラとを有し、これらの駆動力の伝達、保持が略同一面内で行われるように構成されていることを特徴とする。 In order to achieve the above object, a spring actuator for a breaker according to the present invention includes a breaker spring and a closing spring that opens and closes a stationary contact and a movable contact of a breaker in order to cut off and turn on power, and the closing spring. A driving force transmitted through the closing spring link, a main lever attached to a main shaft to which the cam load is transmitted and the driving force of the cam is transmitted, and from the main lever In a circuit breaker spring actuator comprising a link for transmitting a driving force of a breaking spring and a closing spring and a breaking control mechanism for holding and releasing the driving force of the breaking spring, the main lever is composed of two plates. In addition , the blade portion is extended in four directions, and the main lever with the blade portion extended in the four directions is sandwiched between two plate members of the main lever and contacts the cam during the closing operation of the blocking portion. a first roller for the previous A first pin for connecting said link between the two plate members of the main lever, and a second pin for connecting the cutoff spring link for transmitting the driving force of the blocking spring between the two plate members of the main lever, the A second roller that is sandwiched between two plates of the main lever and transmits the driving force of the blocking spring to the blocking control mechanism, so that the driving force is transmitted and held in substantially the same plane. It is configured.

このように構成することにより、主レバーの回転軸心周りの慣性モーメントが低減されるので、遮断器の接点を高速動作させることができると共に、主軸の捻りを介さずに遮断、投入の駆動力が接点側に伝達するので、主軸および主軸を支持する筐体、軸受の信頼性が向上し、しかも、主軸に連結するレバーの数が減るので、構成が簡素化され操作器を小型化することができる。   With this configuration, the moment of inertia around the rotation axis of the main lever is reduced, so that the contact of the circuit breaker can be operated at high speed, and the driving force for breaking and closing without involving the twisting of the main shaft Is transmitted to the contact side, which improves the reliability of the main shaft, the housing that supports the main shaft, and the bearing, and reduces the number of levers connected to the main shaft, thus simplifying the configuration and reducing the size of the operating device. Can do.

また、本発明は、上記構成に加え、主レバーの重心位置が、該主レバーの回転軸心位置に概ね一致していることを特徴とする。   In addition to the above configuration, the present invention is characterized in that the position of the center of gravity of the main lever substantially matches the position of the rotation axis of the main lever.

この構成によっても、上記と同様な効果が得られると共に、主レバーの回転速度を速めることができる。   Also with this configuration, the same effect as described above can be obtained, and the rotation speed of the main lever can be increased.

また、本発明は、上記構成に加え、遮断ばねの動作軸線上に、遮断、投入の動作終了時に可動部品を制動する緩衝装置が配置されていることを特徴とする。   In addition to the above-described configuration, the present invention is characterized in that a shock absorber for braking the movable part at the end of the shut-off and closing operations is disposed on the operating axis of the shut-off spring.

この構成によっても、上記と同様な効果が得られると共に、主軸に緩衝装置と接続するためのレバーを設ける必要がなく、部品点数を減らすことができる。   With this configuration, the same effect as described above can be obtained, and it is not necessary to provide a lever for connecting the shock absorber to the main shaft, and the number of parts can be reduced.

また、本発明は、上記構成に加え、主軸は、中間部分が筐体によって回動支持され、一端に前記主レバーが連結され、更に、主軸を回動支持する筐体内部に、１つの軸受けを備えていることを特徴とする。   According to the present invention, in addition to the above-described configuration, the main shaft has a middle portion pivotally supported by the housing, the main lever is connected to one end, and one bearing inside the housing that pivotally supports the main shaft. It is characterized by having.

この構成によっても、上記と同様な効果が得られると共に、主軸、及び主軸を支持する筺体、軸受の信頼性が向上する。   Also with this configuration, the same effects as described above can be obtained, and the reliability of the main shaft, the casing supporting the main shaft, and the bearing can be improved.

また、本発明は、上記構成に加え、主レバーに角穴又はスプライン溝穴が形成され、かつ、前記主軸に角軸又はスプライン軸が形成され、前記主レバーが前記主軸に対して着脱自在に構成されていることを特徴とする。   According to the present invention, in addition to the above-described configuration, the main lever is formed with a square hole or a spline slot, the main shaft is formed with a square shaft or a spline shaft, and the main lever is detachable from the main shaft. It is configured.

この構成によっても、上記と同様な効果が得られると共に、外部から主レバーを着脱可能であり、また、主レバーを主軸に組み付ける際に、軸方向の位置が調整可能で、組立性が向上する効果がある。   With this configuration, the same effects as described above can be obtained, and the main lever can be attached and detached from the outside. When the main lever is assembled to the main shaft, the position in the axial direction can be adjusted, and assemblability is improved. effective.

更に、本発明は、上記構成に加え、前記主レバーが連結された前記主軸の端部とは反対側の軸端を前記筐体から突出させ、遮断器の非電気指令操作時に該突出部に手動操作手段を連結して前記接点の遮断、投入動作を行うように構成されていることを特徴とする。   Furthermore, in addition to the above-described configuration, the present invention has a shaft end opposite to the end of the main shaft to which the main lever is coupled projecting from the housing, and the projecting portion is disposed at the time of non-electrical command operation of the circuit breaker. A manual operation means is connected so as to cut off and close the contacts.

具体的には、前記手動操作手段は、前記主軸の端部に固定されたレバーと、該レバーに回動自在に一端が接続されたリンクと、該リンクの他端に接続された油圧ピストンと、該油圧ピストンを移動可能に収納している油圧シリンダとを備え、油圧源からの高圧油を前記油圧シリンダに導入することにより前記油圧ピストンを移動させ、これに伴い前記リンクが移動して前記レバー及び主軸が回転することで前記接点の遮断、投入動作が行われることを特徴とする。   Specifically, the manual operation means includes a lever fixed to the end of the main shaft, a link having one end rotatably connected to the lever, and a hydraulic piston connected to the other end of the link. A hydraulic cylinder that movably accommodates the hydraulic piston, and the hydraulic piston is moved by introducing high-pressure oil from a hydraulic source into the hydraulic cylinder, and the link moves accordingly, and the link moves. The contact and the closing operation are performed by rotating the lever and the main shaft.

この構成によっても、上記と同様な効果が得られると共に、変電所、開閉所の電源喪失時にも動作可能となる。   Also with this configuration, the same effect as described above can be obtained, and operation is possible even when the power supply of the substation and the switching station is lost.

また、本発明の遮断器は、固定接触子と可動接触子からなる接点を開閉することによって電力の遮断と投入を行う遮断部と、歪エネルギーを放勢することにより前記接点の開閉を行う遮断ばね及び投入ばねを有するばね操作器とを備えて遮断器において、前記ばね操作器は、上記のいずれか１つの構成の遮断器用ばね操作器であることを特徴とする。   The circuit breaker according to the present invention includes a breaker that cuts off and puts in power by opening and closing a contact made up of a fixed contact and a movable contact, and a break that opens and closes the contact by releasing strain energy. A circuit breaker comprising a spring actuator having a spring and a closing spring, wherein the spring actuator is a spring actuator for a circuit breaker having any one of the above-described configurations.

このように構成することにより、上述した遮断器用ばね操作器と同様な効果が得られることは勿論、遮断器用ばね操作器が小型化するので、遮断器の小型化が図れる効果がある。   By configuring in this way, the same effect as that of the above-described circuit breaker spring operating device can be obtained, and the circuit breaker spring operating device can be downsized, so that the circuit breaker can be downsized.

本発明によれば、主レバーの回転軸心周りの慣性モーメントが低減されるので、遮断器の接点を高速動作させることができると共に、主軸の捻りを介さずに遮断、投入の駆動力が接点側に伝達するので、主軸および主軸を支持する筐体、軸受の信頼性が向上し、しかも、主軸に連結するレバーの数が減るので、構成が簡素化され操作器の小型化を図ることができる。   According to the present invention, since the moment of inertia around the rotation axis of the main lever is reduced, the contact of the circuit breaker can be operated at a high speed, and the driving force for breaking and closing without the twist of the main shaft can be contacted. Since the transmission to the side increases the reliability of the main shaft and the housing and bearings that support the main shaft, and the number of levers connected to the main shaft is reduced, the configuration can be simplified and the operating device can be downsized. it can.

本発明の遮断器用ばね操作器の実施例１であり、ガス遮断器投入状態の遮断器用ばね操作器を示す図である。It is Example 1 of the spring operating device for circuit breakers of this invention, and is a figure which shows the spring operating device for circuit breakers in a gas circuit breaker insertion state. 実施例１におけるばね操作器を示す断面図である。It is sectional drawing which shows the spring operating device in Example 1. FIG. 実施例１におけるガス遮断器遮断動作終了状態の遮断器用ばね操作器を示す図である。It is a figure which shows the spring actuator for circuit breakers of the gas circuit breaker interruption | blocking operation completion state in Example 1. FIG. 実施例１におけるガス遮断器投入動作中の状態の遮断器用ばね操作器を示す図である。It is a figure which shows the spring actuator for circuit breakers in the state during the gas circuit breaker injection | throwing-in operation | movement in Example 1. FIG. 実施例１におけるガス遮断器投入動作終了状態の遮断器用ばね操作器を示す図である。It is a figure which shows the spring actuator for circuit breakers of the gas circuit breaker injection | throwing-in operation completion state in Example 1. FIG. 実施例１の遮断器用ばね操作器が搭載されたガス遮断器を示す正面図である。It is a front view which shows the gas circuit breaker by which the spring operating device for circuit breakers of Example 1 was mounted. 実施例１におけるばね操作器の主レバーの羽根部長さの定義を説明するための図である。It is a figure for demonstrating the definition of the blade | wing part length of the main lever of the spring operating device in Example 1. FIG. ガス遮断器の非電気指令操作時に使用される手動操作手段を示す図である。It is a figure which shows the manual operation means used at the time of non-electrical command operation of a gas circuit breaker.

以下、本発明の遮断器用ばね操作器及び遮断器の一実施例を、図面を用いて説明する。   Hereinafter, an embodiment of a spring actuator for a circuit breaker and a circuit breaker according to the present invention will be described with reference to the drawings.

まず、本発明の遮断器の一実施例であるガス遮断器を、図６を用いて説明する。該図に示す如く、ガス遮断器１００は、円筒形の接地容器１０３が架台１０５上に設置されている。この円筒形の接地容器１０３には、絶縁性のガス、例えばＳＦ６ガス（六弗化硫黄ガス）が規定の圧力で封入され、円筒形の接地容器１０３の軸方向中間部から斜め上方に、ブッシング１０１、１０２が突き出ている。変電所や開閉所の中の電線を接続して電路を構成する導体が、ブッシング１０１、１０２内に収納されている。また、架台１０５の側部には、ガス遮断器１００の操作部を収納する操作箱１０４が取り付けられている。 First, the gas circuit breaker which is one Example of the circuit breaker of this invention is demonstrated using FIG. As shown in the figure, the gas circuit breaker 100 has a cylindrical grounding container 103 installed on a mount 105. The cylindrical grounding container 103 is filled with an insulating gas, for example, SF 6 gas (sulfur hexafluoride gas) at a predetermined pressure, and obliquely upward from the axial intermediate portion of the cylindrical grounding container 103. Bushings 101 and 102 protrude. The conductors that connect the electric wires in the substation and the switching station to form the electric circuit are accommodated in the bushings 101 and 102. An operation box 104 that houses the operation unit of the gas circuit breaker 100 is attached to the side of the gantry 105.

このように構成したガス遮断器１００では、例えば、通電時に電力が図示しない系統から上流側のブッシング１０２に供給される。そして、ブッシング１０２から接地容器１０３内の接点に導かれ、下流側のブッシング１０１を経て再び系統に供給される。例えば、落雷などで系統に事故が発生すると、操作箱１０４内の操作器を駆動して接地容器１０３内の接点を開く。これにより、下流側への電力の供給を遮断する。   In the gas circuit breaker 100 configured as described above, for example, power is supplied from an unillustrated system to the upstream bushing 102 when energized. And it guide | induces from the bushing 102 to the contact in the grounding container 103, and is supplied to a system | strain again through the bushing 101 of a downstream side. For example, when an accident occurs in the system due to a lightning strike or the like, the controller in the operation box 104 is driven to open the contact in the ground container 103. Thereby, supply of the electric power to the downstream side is interrupted.

なお、本実施例では、接地容器１０３は水平方向に延在しているが、鉛直方向に延在した形でもよい。また、本実施例では、接地容器１０３にブッシング１０１、１０２を直接取り付けた単体のガス遮断器を説明するが、ガス絶縁開閉装置の中に組み込まれた遮断器であってもよい。また、ここでは、ＳＦ６ガスを使用したガス遮断器を例にとり説明するが、接地容器１０３内を、真空や他のガスを封入した開閉装置にも本発明を適用できることは言うまでもない。 In the present embodiment, the ground container 103 extends in the horizontal direction, but may be extended in the vertical direction. In the present embodiment, a single gas circuit breaker in which the bushings 101 and 102 are directly attached to the ground container 103 will be described, but a circuit breaker incorporated in a gas insulated switchgear may be used. Here, a gas circuit breaker using SF 6 gas will be described as an example, but it goes without saying that the present invention can also be applied to a switchgear in which the inside of the ground container 103 is filled with vacuum or other gas.

次に、図１乃至図５を用いて、図６で示した操作箱１０４内に収容されるばね操作器４００を接地容器１０３内の遮断部４０５と共に説明する。   Next, the spring operating device 400 housed in the operation box 104 shown in FIG. 6 will be described together with the blocking portion 405 in the ground container 103 with reference to FIGS.

図１に示す如く、遮断部４０５の固定接触子６２の一端は、筒状の固定側導体６１に固定支持されており、他端は可動接触子６３に接触している。可動接触子６３は、固定接触子６２との接触側が筒状に形成されている。可動接触子６３を保持する可動側導体６０は、図示を略した絶縁筒により接地容器１０３内に支持固定されている。また、可動接触子６３の固定接触子６２との接触端との反対端は、棒状の絶縁材６４に接続されている。   As shown in FIG. 1, one end of the fixed contact 62 of the blocking portion 405 is fixedly supported by the cylindrical fixed conductor 61, and the other end is in contact with the movable contact 63. The movable contact 63 is formed in a cylindrical shape on the contact side with the fixed contact 62. The movable conductor 60 that holds the movable contact 63 is supported and fixed in the ground container 103 by an insulating cylinder (not shown). Further, the end of the movable contact 63 opposite to the contact end with the fixed contact 62 is connected to a rod-shaped insulating material 64.

ここで、遮断部４０５とばね操作器４００との接続を説明する。図示を略した接地容器１０３内に回転自在に支持された回転軸６６を有し、この回転軸６６に第２のレバー６５および第１のレバー６７のそれぞれの一端部が嵌合されている。第２のレバー６５の他端部は、絶縁材６４と接続されている。第１のレバー６７の他端部は、リンク６８の一端に接続されている。リンク６８の他端は、ばね操作器４００の主レバー５に接続されている。   Here, the connection between the blocking portion 405 and the spring operating device 400 will be described. A rotating shaft 66 is rotatably supported in a ground container 103 (not shown), and one end of each of the second lever 65 and the first lever 67 is fitted to the rotating shaft 66. The other end of the second lever 65 is connected to the insulating material 64. The other end of the first lever 67 is connected to one end of the link 68. The other end of the link 68 is connected to the main lever 5 of the spring operating device 400.

ばね操作器４００は、主軸および遮断ばね２６を有する遮断操作部４０３と、カム軸２および投入ばね２８を有する投入操作部４０４と、投入ばね２８の駆動力を保持解放する投入制御機構４０２と、遮断ばね２６の駆動力を保持解放する遮断制御機構４０１とを有している。以下、このばね操作器４００の各部の構成を説明する。   The spring operator 400 includes a shut-off operation unit 403 having a main shaft and a shut-off spring 26, a closing operation unit 404 having a camshaft 2 and a closing spring 28, a closing control mechanism 402 for holding and releasing the driving force of the closing spring 28, And a cutoff control mechanism 401 that holds and releases the driving force of the cutoff spring 26. Hereinafter, the configuration of each part of the spring operating device 400 will be described.

遮断操作部４０３を構成する主軸４には、主レバー５と図２に示す抜け止め部材７３が取り付けられている。主レバー５は、回転軸心から四方向に延在した羽根部を有し、端部にローラやピンが取り付けられている。即ち、四方向に延在した羽根部を有している主レバー５には、遮断部４０５の投入動作時にカム３と接触する第１のローラ６と、リンク６８を接続する第１のピン５ｂと、遮断ばね２６の駆動力を伝達する遮断ばねリンク２５の一端を接続する第２のピン５ａと、遮断制御機構４０１に遮断ばね２６の駆動力を伝達する第２のローラ７が取り付けられている。そして、第１のローラ６は、投入動作時にカム３と接し、第２のローラ７は、投入保持状態で圧縮された遮断ばね力を遮断制御機構４０１にて保持するために、第２遮断ラッチ８と係合する。   A main lever 5 and a retaining member 73 shown in FIG. 2 are attached to the main shaft 4 constituting the shut-off operation unit 403. The main lever 5 has a blade portion extending in four directions from the rotation axis, and a roller or a pin is attached to the end portion. That is, the main lever 5 having blade portions extending in four directions includes a first roller 6 that contacts the cam 3 during the closing operation of the blocking portion 405 and a first pin 5b that connects the link 68. And a second pin 5a that connects one end of the cutoff spring link 25 that transmits the driving force of the cutoff spring 26, and a second roller 7 that transmits the driving force of the cutoff spring 26 to the cutoff control mechanism 401. Yes. The first roller 6 is in contact with the cam 3 during the closing operation, and the second roller 7 is a second blocking latch for holding the blocking spring force compressed in the closing holding state by the blocking control mechanism 401. 8 is engaged.

以上の如く構成することにより、遮断、投入の駆動力の接点側への伝達、遮断制御機構への遮断ばね力の伝達を、図２に示すＺＹ面のみ、即ち、同一面内で行うことができる。   With the configuration as described above, the transmission of the breaking and closing driving force to the contact side and the transmission of the breaking spring force to the breaking control mechanism can be performed only on the ZY plane shown in FIG. 2, that is, in the same plane. it can.

一端が主レバー５に接続された遮断ばねリンク２５の他端は、遮断、投入の動作終了時に可動部品を制動する緩衝装置３８内のピストン３６の一端に、ピン２５ｂにより接続されている。遮断ばねリンク２５には、ピン２５ｂの近くにフランジ２５ａが設けられ、遮断ばね２６のばね力が作用する。   The other end of the shut-off spring link 25 having one end connected to the main lever 5 is connected to one end of a piston 36 in the shock absorber 38 that brakes the movable part at the end of the shut-off and closing operation by a pin 25b. The cutoff spring link 25 is provided with a flange 25a near the pin 25b, and the spring force of the cutoff spring 26 acts.

上述した緩衝装置３８は、円筒状のシリンダ３７内に図示を略した非圧縮性流体、例えば油と、ピストン３６が収納され、ピストン３６にはフランジ３６ａが設けられ、その外面がシリンダ３７の内面にほぼ接している。ピストン３６は、遮断ばねリンク２５と連動してシリンダ３７内を左右方向に移動することで、油を圧縮して制動力を発生している。また、緩衝装置３８は、遮断ばねリンク２５の動作軸線方向に取り付けられているので、主軸４に緩衝装置３８と接続するためのレバーを設ける必要がなく、部品数を減らすことができる。また、制動力が主軸４を捻ることなく、主レバー５を介して接点側に伝達されるため、制動特性を向上させることができる。   In the above-described shock absorber 38, a non-compressible fluid (not shown) such as oil and a piston 36 are accommodated in a cylindrical cylinder 37. The piston 36 is provided with a flange 36a, and an outer surface thereof is an inner surface of the cylinder 37. Almost touching. The piston 36 moves in the left-right direction in the cylinder 37 in conjunction with the cutoff spring link 25, thereby compressing oil and generating a braking force. Further, since the shock absorber 38 is attached in the operation axis direction of the cutoff spring link 25, it is not necessary to provide a lever for connecting the shock absorber 38 to the main shaft 4, and the number of parts can be reduced. Further, since the braking force is transmitted to the contact side through the main lever 5 without twisting the main shaft 4, the braking characteristics can be improved.

図１に示す投入操作部４０４は、以下のように構成されている。即ち、カム軸２に大歯車５２とカム３が取り付けられ、カム軸２は、図２に示す一対の軸受装置７１ａ、７１ｂで回転自在に支持され、軸受装置７１ａ、７１ｂが、筐体１の突出部に配置されている。大歯車５２には、小歯車５１が噛み合っており、小歯車５１には、図示を略した電動機から駆動力が伝達される。カム３の外側には、投入ばねリンク２７の一端部が回動自在に取り付けられている。投入ばねリンク２７の他端部には、ばね受け３５が取り付けられており、投入ばね２８の可動端を支持している。   The input operation unit 404 shown in FIG. 1 is configured as follows. That is, the large gear 52 and the cam 3 are attached to the cam shaft 2, the cam shaft 2 is rotatably supported by a pair of bearing devices 71 a and 71 b shown in FIG. 2, and the bearing devices 71 a and 71 b are connected to the housing 1. It is arrange | positioned at the protrusion part. A small gear 51 is engaged with the large gear 52, and a driving force is transmitted to the small gear 51 from an electric motor (not shown). One end of the closing spring link 27 is rotatably attached to the outside of the cam 3. A spring receiver 35 is attached to the other end of the closing spring link 27 and supports the movable end of the closing spring 28.

投入制御機構４０２は、以下のように構成される。即ち、カム３の最大半径部付近にはローラ１８が取り付けられ、このローラ１８には、係合可能に投入ラッチ１９が配置されている。投入ラッチ１９は、略Ｖ字形状をしており、その屈曲部を軸に回動自在に取り付けている。投入ラッチ１９のＶ字の一方端部には、テーパが形成されており、カム３のローラ１８に係合するようになっている。投入ラッチ１９のＶ字型の他端部には、ローラ２１が取り付けられ、このローラ２１に当接可能に、トリガレバー２２が配置されている。投入ラッチ１９の回転軸心とローラ２１までの中間部に一端が筐体１に固定された復帰ばね２０が取り付けられている。トリガレバー２２は、中間部で筐体１に固定された軸に回動自在に取り付けられており、投入ラッチ１９のローラ２１に当接する側と反対端に投入トリガ２２ａを形成している。この投入トリガ２２ａに、当接可能に投入用電磁石２０２のプランジャ２１２が配置されている。   The input control mechanism 402 is configured as follows. That is, a roller 18 is attached in the vicinity of the maximum radius portion of the cam 3, and a closing latch 19 is disposed on the roller 18 so as to be engageable. The closing latch 19 is substantially V-shaped, and is attached so as to be rotatable about its bent portion. A taper is formed at one end of the V-shape of the closing latch 19 so as to engage with the roller 18 of the cam 3. A roller 21 is attached to the other V-shaped end of the closing latch 19, and a trigger lever 22 is disposed so as to be able to contact the roller 21. A return spring 20 having one end fixed to the housing 1 is attached to an intermediate portion between the rotation axis of the closing latch 19 and the roller 21. The trigger lever 22 is rotatably attached to a shaft fixed to the housing 1 at an intermediate portion, and forms a closing trigger 22a at the opposite end of the closing latch 19 to the side in contact with the roller 21. A plunger 212 of the charging electromagnet 202 is disposed on the charging trigger 22a so as to be able to come into contact therewith.

遮断制御機構４０１は、以下の如く構成される。即ち、主レバー５に設けた第２のローラ７に第２遮断ラッチ８が係合可能に配置され、第２遮断ラッチ８の中間部は、筐体１に固定した軸に回動自在に取り付けられている。第２遮断ラッチ８の一端に形成したテーパ部には、主レバー５の第２のローラ７が係合する。第２遮断ラッチ８の他端部には、ローラ１０が取り付けられ、このローラ１０に係合可能に、遮断ラッチ１１が配置されている。第２遮断ラッチ８の軸心とテーパ部との中間に、第２遮断ラッチ８の復帰ばね９が取り付けられている。復帰ばね９は、一端が筐体１に固定されている。   The shutoff control mechanism 401 is configured as follows. That is, the second blocking latch 8 is disposed so as to be engageable with the second roller 7 provided on the main lever 5, and the intermediate portion of the second blocking latch 8 is rotatably attached to the shaft fixed to the housing 1. It has been. The second roller 7 of the main lever 5 is engaged with a tapered portion formed at one end of the second blocking latch 8. A roller 10 is attached to the other end of the second blocking latch 8, and a blocking latch 11 is disposed so as to be engageable with the roller 10. A return spring 9 of the second cutoff latch 8 is attached between the shaft center of the second cutoff latch 8 and the tapered portion. One end of the return spring 9 is fixed to the housing 1.

遮断ラッチ１１の中間部は、筐体１に固定した軸に回動自在に取り付けられており、一端側に形成したテーパ部が、第２遮断ラッチ８のローラ１０と係合可能になっている。遮断ラッチ１１の他端部には、ローラ１３が取り付けられている。このローラ１３に係合可能に、遮断トリガ１４ａが配置されている。遮断ラッチ１１の軸心とテーパ部との中間に、筐体１に一端が固定された復帰ばね１２が取り付けられている。   An intermediate portion of the blocking latch 11 is rotatably attached to a shaft fixed to the housing 1, and a tapered portion formed on one end side can be engaged with the roller 10 of the second blocking latch 8. . A roller 13 is attached to the other end of the blocking latch 11. A blocking trigger 14a is disposed so as to be engageable with the roller 13. A return spring 12 having one end fixed to the housing 1 is attached between the axis of the blocking latch 11 and the tapered portion.

遮断トリガ１４ａは略Ｌ字状をしており、回転軸心から水平方向の端部に、遮断ラッチ１１のローラ１３に当接する曲面部が形成されている。遮断トリガ１４ａの一方の鉛直方向のトリガレバー１４ｂは、遮断用電磁石２０１のプランジャ２１１が当接するように構成されている。また、トリガレバー１４ｂの他方に一端が筐体１に固定された復帰ばね１５が取り付けられている。   The cutoff trigger 14a is substantially L-shaped, and a curved surface portion that comes into contact with the roller 13 of the cutoff latch 11 is formed at the horizontal end from the rotation axis. One vertical trigger lever 14b of the blocking trigger 14a is configured such that the plunger 211 of the blocking electromagnet 201 contacts. A return spring 15 having one end fixed to the housing 1 is attached to the other side of the trigger lever 14b.

第２遮断ラッチ８および遮断ラッチ１１、遮断トリガ１４ａに取り付けられた復帰ばね９、１２、１５は、図１に示す投入保持状態で圧縮状態にあり、第２遮断ラッチ８及び遮断ラッチ１１、遮断トリガ１４ａには常にこれらの復帰ばねのばね力が作用している。   The return springs 9, 12, and 15 attached to the second cutoff latch 8, the cutoff latch 11, and the cutoff trigger 14a are in the compressed state in the closing and holding state shown in FIG. 1, and the second cutoff latch 8 and the cutoff latch 11, The spring force of these return springs always acts on the trigger 14a.

このように構成した本実施例のガス遮断器１００の動作を説明する。   Operation | movement of the gas circuit breaker 100 of the present Example comprised in this way is demonstrated.

はじめに、図１に示した投入状態から遮断状態へ移行する動作について述べる。遮断部４０５の投入状態において、遮断指令が入力されるとガス遮断器１００は、遮断動作を開始する。遮断制御機構４０１の遮断用電磁石２０１が励磁され、遮断用電磁石２０１のプランジャ２１１が突出して、トリガレバー１４ｂを押圧する。トリガレバー１４ｂは、プランジャ２１１に押されて時計回りに回転する。その結果、遮断トリガ１４ａと遮断ラッチ１１との係合が外れる。   First, the operation for shifting from the on state shown in FIG. 1 to the shut off state will be described. When a shut-off command is input while the shut-off unit 405 is turned on, the gas circuit breaker 100 starts a shut-off operation. The blocking electromagnet 201 of the blocking control mechanism 401 is excited, the plunger 211 of the blocking electromagnet 201 protrudes, and presses the trigger lever 14b. The trigger lever 14b is pushed by the plunger 211 and rotates clockwise. As a result, the engagement between the cutoff trigger 14a and the cutoff latch 11 is released.

遮断トリガ１４ａとの係合が外れた遮断ラッチ１１は回動自由になる。第２遮断ラッチ８のローラ１０が遮断ラッチ１１を押しているので、遮断ラッチ１１は軸８ａ回りに回転する。次に、第２遮断ラッチ８は、主レバー５の第２のローラ７からの押圧力により時計回りに回転する。そして、主レバー５と第２遮断ラッチ８との係合が外れる。   The interruption latch 11 which is disengaged from the interruption trigger 14a is free to rotate. Since the roller 10 of the second blocking latch 8 pushes the blocking latch 11, the blocking latch 11 rotates around the shaft 8a. Next, the second blocking latch 8 rotates clockwise by the pressing force from the second roller 7 of the main lever 5. Then, the main lever 5 and the second cutoff latch 8 are disengaged.

主レバー５と第２遮断ラッチ８との係合が外れて主レバー５は回動自在となる。これにより、遮断ばね２６が放勢され、主レバー５を時計回りに回動させる。主レバー５に接続されたリンク６８が上方に移動し、第１のレバー６７を反時計回りに回動させる。これに伴い、回転軸６６および第２のレバー６５も反時計回りに回動する。第２のレバー６５の回動に伴い、第２のレバー６５に接続した絶縁材６４と可動接触子６３が右方向に移動する。これにより、可動接触子６３が固定接触子６２から離れて接点を遮断する。遮断動作後半では、緩衝装置３８で制動力が発生して可動部を減速させ、遮断動作が終了する。この際、主レバー５の端部の第１のローラ６が、カム３の外周面にほぼ当接して止まる（図３参照）。   The main lever 5 and the second blocking latch 8 are disengaged from each other, and the main lever 5 is rotatable. Thereby, the cutoff spring 26 is released, and the main lever 5 is rotated clockwise. The link 68 connected to the main lever 5 moves upward to rotate the first lever 67 counterclockwise. Accordingly, the rotating shaft 66 and the second lever 65 also rotate counterclockwise. As the second lever 65 rotates, the insulating material 64 and the movable contact 63 connected to the second lever 65 move in the right direction. As a result, the movable contact 63 moves away from the fixed contact 62 and blocks the contact. In the second half of the blocking operation, a braking force is generated by the shock absorber 38 to decelerate the movable part, and the blocking operation is completed. At this time, the first roller 6 at the end of the main lever 5 substantially stops in contact with the outer peripheral surface of the cam 3 (see FIG. 3).

図７に、主レバー５の回転軸心（主軸４）から羽根部までの長さの記号定義を示す。該図に示す如く、四方向の羽根部の中で、回転軸心からリンク６８の第１のピン５ｂまでの長さＬ４５ａが最も長く、同軸心から第１のローラ６までの長さＬ４６が最も短い。回転軸心から第２のローラ７までの長さＬ４７および回転軸心から遮断ばねリンク２５の第２のピン５ａまでの長さＬ４５ｂの長さは、Ｌ４５ａに概ね一致させている。 In FIG. 7, the symbol definition of the length from the rotating shaft center (main shaft 4) of the main lever 5 to a blade | wing part is shown. As shown in the figure, the length L45a from the rotation axis to the first pin 5b of the link 68 is the longest, and the length L46 from the coaxial center to the first roller 6 is the longest among the four direction blades. short. The length L47 from the rotation axis to the second roller 7 and the length L45b from the rotation axis to the second pin 5a of the cutoff spring link 25 are substantially matched to L45a.

これにより、主レバー５において回転軸心から四方向の羽根部先端まで長さ比（Ｌ４５ａ/Ｌ４６）を最大１．４としている。この場合、主レバー５の重心位置は、回転軸心に直接一致しないものの、主軸４の外径内に収まるため、遮断動作時の主レバー５の回動速度を速めることができる。回動速度を最大とするには、主レバー５の四方向の羽根部の長さを一致させれば良い。 Thus, the length ratio (L 45a / L 46 ) from the rotation axis to the tip of the blade in the four directions in the main lever 5 is set to 1.4 at the maximum. In this case, the position of the center of gravity of the main lever 5 does not directly coincide with the rotational axis, but is within the outer diameter of the main shaft 4, so that the rotational speed of the main lever 5 during the blocking operation can be increased. In order to maximize the rotation speed, the lengths of the four blade portions of the main lever 5 may be matched.

次に、遮断部４０５が図３に示した遮断状態から、図５に示した投入状態に移行する動作を以下に説明する。   Next, an operation in which the blocking unit 405 shifts from the blocking state illustrated in FIG. 3 to the closing state illustrated in FIG. 5 will be described below.

先ず、図３に示す遮断状態で遮断器に投入指令が入力されると、投入用電磁石２０２が励磁される。すると、投入用電磁石２０２のプランジャ２１２が左方向に突出して投入トリガ２２ａを押圧する。押圧されたトリガレバー２２は時計回りに回動して、投入ラッチ１９とトリガレバー２２との係合が解除される。これにより、カム３に取り付けられたローラ１８からの押圧力により投入ラッチ１９が時計回りに回転し、投入ラッチ１９とカム３との係合が解除される。すると、カム３の動作規制がなくなったので、投入ばね２８のばね力が解放され、投入ばねリンク２７が左方向に移動する。この投入ばねリンク２７の移動に伴い、カム軸２及び大歯車５２が時計回りに回動する。   First, when a closing command is input to the circuit breaker in the blocking state shown in FIG. 3, the closing electromagnet 202 is excited. Then, the plunger 212 of the making electromagnet 202 protrudes leftward and presses the making trigger 22a. The pressed trigger lever 22 rotates clockwise, and the engagement between the closing latch 19 and the trigger lever 22 is released. Thereby, the closing latch 19 rotates clockwise by the pressing force from the roller 18 attached to the cam 3, and the engagement between the closing latch 19 and the cam 3 is released. Then, since the operation restriction of the cam 3 is eliminated, the spring force of the closing spring 28 is released, and the closing spring link 27 moves leftward. As the closing spring link 27 moves, the camshaft 2 and the large gear 52 rotate clockwise.

カム軸２の回動に伴い、カム３も時計回りに回動する。そして、図４に示すようにカム３の外周面が主レバー５の第１のローラ６に当接し、主レバー５を反時計回りに回転させる。図４の状態からさらに投入動作が進行し、カム３が時計回りに略反回転すると、カム３の最大曲率半径部分で、カム３の外周面が主レバー５の第１のローラ６に当接する。このとき、主レバー５に接続した遮断ばねリンク２５が、遮断ばね２６をほぼ元の位置まで圧縮してきている。   As the cam shaft 2 rotates, the cam 3 also rotates clockwise. As shown in FIG. 4, the outer peripheral surface of the cam 3 comes into contact with the first roller 6 of the main lever 5 and rotates the main lever 5 counterclockwise. When the feeding operation further proceeds from the state of FIG. 4 and the cam 3 is substantially counterclockwise rotated, the outer peripheral surface of the cam 3 comes into contact with the first roller 6 of the main lever 5 at the maximum curvature radius portion of the cam 3. . At this time, the cutoff spring link 25 connected to the main lever 5 has compressed the cutoff spring 26 to almost the original position.

また、投入動作では主レバー５の回動に伴い、リンク６８を下方に移動させる。これにより、遮断動作と反対回りに第１のレバー６７、回転軸６６、第２のレバー６５が回転して接点の投入動作が行われる（図５参照）。   Further, in the closing operation, the link 68 is moved downward as the main lever 5 rotates. As a result, the first lever 67, the rotary shaft 66, and the second lever 65 rotate in the opposite direction to the blocking operation, and the contact closing operation is performed (see FIG. 5).

このような本実施例によれば、投入動作においても主軸４の捻りを介さずに接点を移動させるため、高速化が可能となる。また、従来は、主軸４の回動支持のために、筐体１に一対の軸受装置を配置していたが、唯一の軸受７２（図２参照）のみに減らすことができる。   According to this embodiment, since the contact is moved without twisting the main shaft 4 even in the closing operation, the speed can be increased. Conventionally, a pair of bearing devices is arranged in the housing 1 to support the rotation of the main shaft 4, but the number of bearings can be reduced to only one bearing 72 (see FIG. 2).

なお、本実施例では、主軸４に主レバー５が取り付けられた一端の反対端では抜け止め部材７３（図２参照）が接続されているが、非電気指令動作時、例えば変電所へのガス遮断器据付段階における低速での動作確認の際には、図８に示す手動操作手段７０をばね操作器４００に接続する。 In this embodiment, a retaining member 73 (see FIG. 2) is connected at the end opposite to the end where the main lever 5 is attached to the main shaft 4, but during non-electrical command operation, for example, gas to a substation In the operation check at low speed in the circuit breaker installation stage, the manual operation means 70 shown in FIG. 8 is connected to the spring operation device 400.

図８を用いて、上記した手動操作手段７０の構成を説明する。なお、図８は、ガス遮断器の遮断動作終了状態を示す。   The configuration of the manual operation means 70 will be described with reference to FIG. FIG. 8 shows a state where the gas circuit breaker is shut off.

図８に示すガス遮断器の遮断動作終了状態において、主軸４の端部４ａにレバー７１を嵌め込む。主軸４の端部４ａおよびレバー７１との締結は、角軸と角穴との嵌合の他にスプライン締結などでも良い。   In the state where the shutoff operation of the gas circuit breaker shown in FIG. The end 4a of the main shaft 4 and the lever 71 may be fastened by spline fastening in addition to the fitting of the square shaft and the square hole.

レバー７１の一端にピン７７が回転自在に支持されており、リンク７８の一端が接続されている。リンク７８の他端は、ピン７９を介して油圧ピストン７４の一端に接続されている。油圧ピストン７４は、油圧シリンダ７５の内部に収納されている。カップラ７６に、図示を略した油圧源から配管を接続して高圧油を油圧シリンダ７５に入れることにより、油圧ピストン７４を図８の右方向に移動させる。これに伴いリンク７８も右方向に移動し、レバー７１および主軸４ａが反時計回りに回転する。よって、図３で主レバー５も反時計回りに回転するので接点の、遮断、投入動作が行われる。   A pin 77 is rotatably supported at one end of the lever 71, and one end of the link 78 is connected. The other end of the link 78 is connected to one end of the hydraulic piston 74 via a pin 79. The hydraulic piston 74 is housed inside the hydraulic cylinder 75. A pipe is connected to the coupler 76 from a hydraulic source (not shown) and high pressure oil is put into the hydraulic cylinder 75, whereby the hydraulic piston 74 is moved to the right in FIG. As a result, the link 78 also moves to the right, and the lever 71 and the main shaft 4a rotate counterclockwise. Therefore, in FIG. 3, the main lever 5 also rotates counterclockwise, so that the contact is cut off and closed.

このように、ガス遮断器の通常運転状態においては、主軸４から手動操作手段７０を切り離しておくことにより、接点移動の高速化を図ることができる。   As described above, in the normal operation state of the gas circuit breaker, by separating the manual operation means 70 from the main shaft 4, the contact movement speed can be increased.

また、本実施例において、主レバー５と主軸４との嵌合を角穴、角軸による結合またはスプライン溝穴、スプライン軸による結合としているので、外部から容易に主レバー５を着脱可能である。また、主レバー５を主軸４に組み付ける際に、幅方向の位置が調整可能であり、組立性を向上することができる。   Further, in this embodiment, the main lever 5 and the main shaft 4 are fitted to each other by a square hole, a combination by a square axis, or a connection by a spline slot or a spline shaft, so that the main lever 5 can be easily attached and detached from the outside. . Further, when the main lever 5 is assembled to the main shaft 4, the position in the width direction can be adjusted, and assemblability can be improved.

１…筐体、２…カム軸、３…カム、４…主軸、４ａ…主軸の端部、５…主レバー、５ａ…第２のピン、５ｂ…第１のピン、６…第１のローラ、７…第２のローラ、８…第２遮断ラッチ、９、１２、１５、２０…復帰ばね、１０、１３、１８、２１…ローラ、１１…遮断ラッチ、１４ａ…遮断トリガ、１４ｂ…トリガレバー、１９…投入ラッチ、２２…トリガレバー、２２ａ…投入トリガ、２５…遮断ばねリンク、２５ａ、３６ａ…フランジ、２５ｂ、７７、７９…ピン、２６…遮断ばね、２７…投入ばねリンク、２８…投入ばね、３５…ばね受け、３６…ピストン、３７…シリンダ、３８…緩衝装置、５１…小歯車、５２…大歯車、６０…可動側導体、６１…固定側導体、６２…固定接触子、６３…可動接触子、６４…絶縁材、６５…第２のレバー、６６…回転軸、６７…第１のレバー、６８、７８…リンク、７０…手動操作手段、７１…レバー、７１ａ、７１ｂ…軸受装置、７２…軸受、７３…抜け止め部材、７４…油圧ピストン、７５…油圧シリンダ、７６…カップラ、１００…ガス遮断器、１０１、１０２…ブッシング、１０３…接地容器、１０４…操作箱、１０５…架台、２０１…遮断用電磁石、２０２…投入用電磁石、２１１、２１２…プランジャ、４００…ばね操作器、４０１…遮断制御機構、４０２…投入制御機構、４０３…遮断操作部、４０４…投入操作部、４０５…遮断部。   DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Cam shaft, 3 ... Cam, 4 ... Main shaft, 4a ... End of main shaft, 5 ... Main lever, 5a ... Second pin, 5b ... First pin, 6 ... First roller , 7 ... 2nd roller, 8 ... 2nd interruption | blocking latch, 9, 12, 15, 20 ... Return spring 10, 13, 18, 21 ... Roller, 11 ... interruption | blocking latch, 14a ... interruption | blocking trigger, 14b ... trigger lever , 19 ... closing latch, 22 ... trigger lever, 22a ... closing trigger, 25 ... blocking spring link, 25a, 36a ... flange, 25b, 77, 79 ... pin, 26 ... blocking spring, 27 ... closing spring link, 28 ... closing Spring, 35 ... Spring receiver, 36 ... Piston, 37 ... Cylinder, 38 ... Shock absorber, 51 ... Small gear, 52 ... Large gear, 60 ... Movable conductor, 61 ... Fixed conductor, 62 ... Fixed contact, 63 ... Movable contact, 64 ... insulating material, 65 ... second Bar, 66 ... Rotating shaft, 67 ... First lever, 68, 78 ... Link, 70 ... Manual operation means, 71 ... Lever, 71a, 71b ... Bearing device, 72 ... Bearing, 73 ... Retaining member, 74 ... Hydraulic pressure Piston, 75 ... Hydraulic cylinder, 76 ... Coupler, 100 ... Gas circuit breaker, 101, 102 ... Bushing, 103 ... Grounding vessel, 104 ... Operating box, 105 ... Ground, 201 ... Electromagnet for interruption, 202 ... Electromagnet for injection, 211 , 212... Plunger, 400... Spring actuator, 401... Blocking control mechanism, 402... Closing control mechanism, 403.

Claims (9)

電力の遮断と投入を行うために遮断部の固定接触子と可動接触子を開閉する遮断ばね及び投入ばねと、該投入ばねの駆動力が投入ばねリンクを介して伝達されるカムと、該カムの荷重が伝達されると共に、該カムの駆動力が伝達される主軸に取り付けられている主レバーと、該主レバーから前記遮断ばね及び投入ばねの駆動力が伝達されるリンクと、前記遮断ばねの駆動力が保持、解放される遮断制御機構とを備えた遮断器用ばね操作器において、
前記主レバーは２つの板材から成ると共に、四方向に羽根部が延在され、かつ、この四方向に羽根部が延在した前記主レバーに、前記主レバーの２つの板材に挟まれ前記遮断部の投入動作時に前記カムと接触する第１のローラと、前記主レバーの２つの板材の間に前記リンクを接続する第１のピンと、前記主レバーの２つの板材の間に前記遮断ばねの駆動力を伝達する遮断ばねリンクを接続する第２のピンと、前記主レバーの２つの板材に挟まれ前記遮断制御機構に前記遮断ばねの駆動力を伝達する第２のローラとを有し、これらの駆動力の伝達、保持が略同一面内で行われるように構成されていることを特徴とする遮断器用ばね操作器。 A cutoff spring and a closing spring that opens and closes the stationary contact and the movable contact of the blocking portion in order to cut off and supply power; a cam to which the driving force of the closing spring is transmitted via a closing spring link; and the cam A main lever attached to a main shaft to which the driving force of the cam is transmitted, a link to which the driving force of the blocking spring and the closing spring is transmitted from the main lever, and the blocking spring In a circuit breaker spring operating device having a breaking control mechanism that holds and releases the driving force of
The main lever is composed of two plate materials , and a blade portion is extended in four directions. The main lever with the blade portion extended in the four directions is sandwiched between the two plate materials of the main lever, and the blocking is performed. A first roller that comes into contact with the cam during the closing operation of the part, a first pin that connects the link between the two plate members of the main lever, and the blocking spring between the two plate members of the main lever . A second pin for connecting a blocking spring link for transmitting a driving force, and a second roller that is sandwiched between two plate members of the main lever and transmits the driving force of the blocking spring to the blocking control mechanism. A circuit breaker spring operating device, wherein the driving force is transmitted and retained in substantially the same plane. 請求項１に記載の遮断器用ばね操作器において、
前記主レバーの重心位置が、該主レバーの回転軸心位置に概ね一致していることを特徴とする遮断器用ばね操作器。 In the spring actuator for circuit breakers according to claim 1,
A circuit breaker spring operating device, wherein a position of a center of gravity of the main lever substantially coincides with a position of a rotation axis of the main lever. 請求項１又は２に記載の遮断器用ばね操作器において、
前記遮断ばねの動作軸線上に、遮断、投入の動作終了時に可動部品を制動する緩衝装置が配置されていることを特徴とする遮断器用ばね操作器。 In the spring actuator for circuit breakers according to claim 1 or 2,
A circuit breaker spring operating device, wherein a shock absorber for braking a movable part at the end of the operation of breaking and closing is disposed on an operating axis of the breaking spring. 請求項１乃至３のいずれか１項に記載の遮断器用ばね操作器において、
前記主軸は、中間部分が筐体によって回動支持され、一端に前記主レバーが連結されていることを特徴とする遮断器用ばね操作器。 The circuit breaker spring operating device according to any one of claims 1 to 3,
The circuit breaker spring operating device according to claim 1, wherein an intermediate portion of the main shaft is pivotally supported by a housing, and the main lever is connected to one end. 請求項４に記載の遮断器用ばね操作器において、
前記主軸を回動支持する筐体内部に、１つの軸受けを備えていることを特徴とする遮断器用ばね操作器。 In the spring actuator for circuit breakers according to claim 4,
A circuit breaker spring operating device comprising a single bearing in a housing that rotatably supports the main shaft. 請求項１乃至５のいずれか１項に記載の遮断器用ばね操作器において、
前記主レバーに角穴又はスプライン溝穴が形成され、かつ、前記主軸に角軸又はスプライン軸が形成され、前記主レバーが前記主軸に対して着脱自在に構成されていることを特徴とする遮断器用ばね操作器。 The circuit breaker spring operating device according to any one of claims 1 to 5,
The main lever is formed with a square hole or a spline slot, the main shaft is formed with a square axis or a spline shaft, and the main lever is configured to be detachable from the main shaft. Spring actuator for dexterity. 請求項４乃至６のいずれか１項に記載の遮断器用ばね操作器において、
前記主レバーが連結された前記主軸の端部とは反対側の軸端を前記筐体から突出させ、遮断器の非電気指令操作時に該突出部に手動操作手段を連結して前記接点の遮断、投入動作を行うように構成されていることを特徴とする遮断器用ばね操作器。 The circuit breaker spring operating device according to any one of claims 4 to 6,
The shaft end opposite to the end of the main shaft to which the main lever is connected is protruded from the housing, and manual operation means is connected to the protrusion during non-electrical command operation of the circuit breaker to interrupt the contact. A circuit breaker spring operating device configured to perform a closing operation. 請求項７に記載の遮断器用ばね操作器において、
前記手動操作手段は、前記主軸の端部に固定されたレバーと、該レバーに回動自在に一端が接続されたリンクと、該リンクの他端に接続された油圧ピストンと、該油圧ピストンを移動可能に収納している油圧シリンダとを備え、油圧源からの高圧油を前記油圧シリンダに導入することにより前記油圧ピストンを移動させ、これに伴い前記リンクが移動して前記レバー及び主軸が回転することで前記接点の遮断、投入動作が行われることを特徴とする遮断器用ばね操作器。 The circuit breaker spring actuator according to claim 7,
The manual operation means includes a lever fixed to an end portion of the main shaft, a link having one end rotatably connected to the lever, a hydraulic piston connected to the other end of the link, and the hydraulic piston. A hydraulic cylinder that is movably housed, and by introducing high pressure oil from a hydraulic source into the hydraulic cylinder, the hydraulic piston is moved, and accordingly, the link is moved to rotate the lever and the main shaft. Thus, the circuit breaker spring operating device is characterized in that the contact is shut off and the closing operation is performed. 固定接触子と可動接触子からなる接点を開閉することによって電力の遮断と投入を行う遮断部と、歪エネルギーを放勢することにより前記接点の開閉を行う遮断ばね及び投入ばねを有するばね操作器とを備えて遮断器において、
前記ばね操作器は、請求項１乃至８のいずれか１項に記載の遮断器用ばね操作器であることを特徴とする遮断器。 A spring operating device having a shut-off portion that shuts off and on power by opening and closing a contact made up of a fixed contact and a movable contact, a shut-off spring that opens and closes the contact by releasing strain energy, and a closing spring In the circuit breaker with
The circuit breaker according to any one of claims 1 to 8, wherein the spring operation unit is a circuit breaker spring operation unit.
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CN201210548144.1A CN103177900B (en) 2011-12-21 2012-12-17 Breaker spring operator and breaker
KR1020120147988A KR101395151B1 (en) 2011-12-21 2012-12-18 Spring operation device for circuit breaker and circuit breaker

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