JP2014165033A - Operating section for switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operating section for switch the size and weight of which are reduced for switching a plurality of positions.SOLUTION: An operating section for switch includes a rotating body 1a, a rod operating in conjunction with the rotational movement of the rotating body, an operating force generation unit 43 for generating a driving force capable of rotating the rotating body 1a to a plurality of positions, and a coupling unit connected with the operating force generation unit 43 and the rotating body 1a and converting a substantially linear operating force generated from the operating force generation unit 43 into the torque of the rotating body 1a. The coupling unit is displaceable by rotating the rotating body 1a with an external force other than that from the operating force generation unit 43, and the rotational direction of the rotating body 1a for the operating force of the operating force generation unit 43 is reversed before and after displacement of the coupling unit by an external force other than that from the operating force generation unit 43.

Description

  The present invention relates to an operation unit for turning on / off, disconnecting, and grounding a voltage / current of a power switch used in a power distribution facility or the like.

  In the power receiving equipment, the main circuit switch section for cutting off the load current or accident current, the disconnect switch section and the ground circuit switch section for ensuring the safety of the worker when carrying out the maintenance of the load, the system voltage A closed-type switchboard with a current detector and a protective relay housed in the housing is installed. Insulation methods of this switch section are various, and in addition to the conventional air insulation board and cubicle type gas insulation switchgear (GIS) using SF6 gas, nowadays, solid insulation, compression from the viewpoint of the environment Air insulation and all-vacuum insulation types have appeared, and depending on each insulation method, functions such as circuit breaker, disconnector, disconnection are integrated into one switch part, including a three-position type or grounding position. In addition, multi-position type vacuum switches such as four positions have been proposed.

  For example, Patent Document 1 discloses a three-position type opening / closing switch that takes a disconnection position in addition to such an on / off operation, or a four-position type opening / closing switch that takes a disconnection / grounding position in addition to an on / off operation. There is what is described. In this patent document, a first electromagnetic operation mechanism and a second electromagnetic operation mechanism are provided, the movable iron cores of both operation mechanisms are arranged on a common operation rod, and an operation mechanism that switches between a closed / open / ground position. In addition, there is disclosed an operation mechanism that further includes a third electromagnetic operation mechanism for disconnection operation and that can be switched to a disconnection position.

JP 2009-80941 A

  The above-described switch is a vacuum that houses a three-position type opening / closing switch section that takes a disconnection position in addition to turning on and off, or a four-position type opening / closing switch section that takes a disconnection and grounding position in addition to turning on and off. The container is housed inside the housing, and is small, lightweight, and highly reliable. For example, it can meet the needs for miniaturization and weight reduction for important facilities of power distribution facilities in urban areas. . However, according to the switch operating unit described above, a driving force device is required for each continuous operation, and there is room for improvement in miniaturization and the like. Therefore, an object of the present invention is to provide a switch operating unit that is reduced in size and weight when switching between a plurality of positions.

  In order to solve the above-described problems, a switch operating unit according to the present invention includes a rotating body, a rod that operates in conjunction with the rotational motion of the rotating body, and a driving force that can rotate the rotating body to a plurality of positions. An operating force generating unit that is generated, and a connecting unit that is connected to the operating force generating unit and the rotating body and converts a substantially linear operating force generated by the operating force generating unit into a rotating force of the rotating body, By rotating the rotating body with an external force other than the operating force generating unit, the connecting unit can be displaced, and before and after the displacement of the connecting unit by an external force other than the operating force generating unit, The rotating direction of the rotating body with respect to the operating force is reversed.

  According to the present invention, it is possible to provide a switch operating unit that is reduced in size and weight when switching between a plurality of positions.

It is a sectional side view of the switchgear which concerns on an Example. It is a top view which shows the gearwheel and connecting insulating rod of the injection position of the operation part demonstrated in an Example. It is a top view which shows the gearwheel and connection insulation rod of the interruption | blocking position of the operation part demonstrated in an Example. It is a figure which shows the connection unlocking mechanism demonstrated in the Example. It is a top view which shows the gear and the connection insulation rod of the disconnection position of the operation part demonstrated in an Example. It is a figure which shows the rotation assistance tool demonstrated in an Example. It is a top view which shows the gearwheel and connection insulating rod of the earthing | grounding position of the operation part demonstrated in an Example.

  Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to FIGS. It should be noted that the following is merely an example of implementation, and it goes without saying that the embodiment is not intended to be limited to the following specific embodiment.

  As shown in FIG. 1, the switchgear described in the present embodiment includes a three-phase bus 40 and a switch unit 46, a cable 42, etc. in FIG. Shows only one phase (the other phase is basically the same configuration), and is connected to the bus bar 46 and has an open / close switch having four switches for switching on, shutting off, disconnecting and grounding A switch unit 46, a cable 42 connected to the switch unit 46 via the cable head 45 to supply power to the load side, and an operating device (operating force generating unit) for operating the switch unit in the switch unit 46 43 and a control device room 44 that houses a protective relay that protects the device when an overcurrent is detected or a lightning strike occurs. The operating device 43 is configured using an electromagnet or the like, and generates a substantially linear driving force MG1.

  The switch unit 46 is provided with two contact points 47 made up of the fixed electrode 5 and the movable electrode 25 arranged opposite to each other, and switches the on / off / disconnect position, and the main circuit switch is internally insulated by vacuum. A grounding circuit switch having a fixed electrode and a movable electrode disposed opposite to each other, the movable electrode being at a ground potential, and grounding the fixed electrode side by inserting the movable electrode into the fixed electrode Section 20, a connection conductor 48 for electrically connecting one fixed electrode 5 provided in main circuit switch section 21 and the fixed electrode of ground circuit switch section 20, main circuit switch section 21, and ground circuit circuit The switch unit 20 and the connection conductor 48 are integrally provided with an insulating container 4 that is solid-insulated with a resin such as epoxy. The other fixed electrode 5 provided in the main circuit switch unit 21 is connected to the bus 40 side. The connection conductor 48 is drawn from the insulating container 4 and connected to the cable 42 via the cable head 45.

  A movable rod connected to the movable electrode 25 is drawn out from the main circuit switch unit 21, and the movable rod is connected to the main circuit insulating rod 23. A movable rod connected to the movable electrode in the main circuit switch section 21 is drawn out of the insulating container through the bellows from the main circuit switch section 21, and the movable rod is connected to the ground circuit insulating rod 22. Is done. A main circuit lever 6 that rotates about the support shaft 8 is connected to the main circuit insulation rod 23, and rotates about the support shaft 8 as the main circuit insulation rod 23 moves in the axial direction. A grounding circuit lever 7 that rotates about the support shaft 8 is connected to the grounding circuit insulating rod 22, and rotates about the support shaft 8 as the grounding circuit insulating rod 22 moves in the axial direction. The ground circuit lever 7 rotates in conjunction with (at least in part) the rotation of the main circuit lever 6 to realize the axial movement of the ground circuit insulating rod 22. The main circuit insulating rod 23 is connected to a connecting insulating rod 1b having an uneven portion. The concavo-convex portion of the connecting insulating rod 1b is formed so as to be able to be fitted with a gear described below.

  As shown in FIGS. 1 to 3, the operation unit in this embodiment includes an operation unit 43, a gear 1 a, a link unit 1 k connected to the operation unit 43, and a link unit 1 k and one end via a connecting part 1 e. The connecting member 1c on the operating device side to which the motor is connected and the other end of the connecting member 1c are connected via a fulcrum 1i, and the connecting member on the gear side whose one end is connected to be rotatable about the fulcrum 1i. 1d, a drive shaft 1f to which the other end of the connecting member 1d is fixed, and a connecting insulating rod 1b having a concavo-convex portion that can be fitted to a gear. The drive shaft 1f is provided at the rotation center of the gear 1a and rotates integrally with the gear 1a. The fulcrum 1i connects the connecting position between the link portion 1k and the operation device 43 and the connecting position with the gear 1a in the connecting member 1d (in the present embodiment, coincides with the drive shaft that is the rotation center of the gear 1a). It is provided at a position shifted from the straight line to one side. The fulcrum 1i can be displaced to a position shifted to the other side with respect to the straight line by applying an external force other than the operating device 43. A specific displacement procedure will be described later. The gear 1a can receive the driving force from the operating device 43 at any fulcrum 1i position.

  Further, a guide portion 24 is provided around the link portion 1k so as to prevent the movement of the link portion 1k from deviating from a predetermined substantially linear shape. The guide portion 24 allows the link portion 1k to move without deviating from a predetermined stroke. The connecting members 1c and 1d are arranged in a surface 1g substantially parallel to the gear 1a, and guide the left-right rotational direction from a substantially linear driving force on the driving shaft of the operating device 43. And the operating device 43 which operates the link part 1k in a present Example operate | moves 2 steps | paragraphs in the direction which approaches the gear 1a, and the direction which leaves | separates.

  The connecting part 1e for connecting the link part 1k and the connecting member 1c is provided with an operating device 43 during continuous operation of closing (FIG. 2) dredging (FIG. 3) and continuous operation of disconnection (FIG. 4) dredging (FIG. 5). Concatenated with On the other hand, at the time of continuous operation of blocking (FIG. 3) and disconnection (FIG. 4), the connection with the operating device 43 is unlocked by the connection unlocking mechanism.

  The drive shaft 1f provided at the rotation center of the gear 1a is formed with a fitting shape to which one end of the rotation auxiliary tool 1h can be attached or detached. A handle 1h ′ is provided at the other end of the rotation assisting tool 1h. The rotation assist tool 1h moves the fulcrum 1i from the position shifted to one side from the straight line connecting the connection position of the link portion 1k and the operating device 43 and the connection position of the gear 1a in the connection member 1d to the other side. An external force that moves (including the reverse direction) to a shifted position (on the opposite side to the drive shaft 1f) can be applied.

  FIG. 3B shows each state when the link portion 1k and the connecting member 1c constituting the connection / unlocking mechanism are connected and unlocked. A pin hole into which a connecting part 1e (for example, a bolt) can be inserted is formed in the link portion 1k and the connecting member 1c of the operating device 43. The connecting part 1e is locked by a nut) so as not to come off. At the time of unlocking, the stop part 1e 'is removed, and the connecting part 1e is removed, so that the link part 1k of the operating device 43 and the connecting member 1c of the gear 1a are separated.

  Then, after the blocking operation shown in FIG. 3 (a), the link 1k and the connecting member 1c are unlocked by the coupling / unlocking mechanism, and then the rotation direction of the gear 1a when shifting from the closing position to the blocking position. Are operated using the rotation assist tool 1h (shown in FIG. 4A) in the same direction. That is, by using the rotation assist tool 1h, the fulcrum 1i is shifted to one side from the straight line connecting the connection position of the link portion 1k and the operating device 43 and the connection position of the gear 1a in the connection member 1d. Thus, an external force that moves to a position shifted to the other side (on the opposite side to the drive shaft 1f) can be applied. The distance by which the gear 1a is rotated by the external force corresponds to a distance necessary for the movable electrode in the switch unit to move from the blocking position to the disconnecting position. That is, at the time of transition, after the blocking operation, the link portion 1k and the connecting member 1c are unlocked, and then the rotation assist tool 1h is attached, and the operator rotates the handle 1h 'so that the connecting member 1d is reversed. . In this operation process, the position of the connecting insulating rod 1b in contact with the gear 1a moves from the position p2 to the position p3. And after the said movement, the link part 1k and the connection member 1c are connected again.

  By this operation from disconnection to disconnection, the position of the fulcrum 1i with respect to the straight line connecting the connecting position of the link portion 1k and the operating device 43 and the connecting position of the connecting member 1d with the gear 1a is reversed, and the operating device 43 is generated. The rotation direction of the rotating body with respect to the operating force in the same direction (the side where the link portion 1k approaches or separates from the gear 1a) is reversed. That is, in the structure in the present embodiment, the gear 1a rotates counterclockwise when the link portion 1k moves away from the gear 1a in the closing position, and the gear 1a rotates clockwise when the link portion 1k approaches the gear 1a in the blocking position. In the disconnected position, the gear 1a rotates counterclockwise when the link portion 1k approaches the gear 1a, and in the grounding position, the gear 1a rotates clockwise when the link portion 1k moves away from the gear 1a. Will rotate.

  Subsequently, the four-position operation according to the present embodiment will be described with reference to FIGS. FIG. 2 shows the state of the operation unit at the closing position. The direction in which the link unit 1k approaches the gear 1a by operating the operating unit 43 from the blocking position shown in FIG. Push the link part 1k into. As a result, the gear 1a is rotated clockwise, the connecting insulating rod 1b is driven in a direction approaching the switch portion, and the movable electrode 25 is pushed in. As a result, the contact 47 is turned on.

  In the closing position, the gear 1a is fitted at the p1 position of the connecting insulating rod 1b. On the other hand, at the blocking position, the gear 1a is fitted at the p2 position of the connecting insulating rod 1b and is moved by G1. On the contrary, when shifting from the closing position shown in FIG. 2 to the blocking position shown in FIG. 3 (a), the link unit 1k is moved in the direction away from the gear 1a (in the direction of the dotted arrow) by the operation device 43. Pull out and rotate gear 1a counterclockwise. As a result, the connecting insulating rod 1b is driven in a direction away from the switch portion, the movable electrode 25 is moved away from the fixed electrode 5, and the contact 47 is cut off.

  FIG. 3 (a) shows the blocking position. When shifting from this position to the disconnecting position shown in FIG. 4 (a), the connecting part 1e is removed to connect the operating device 43 and the connecting member 1c. Then, the rotation auxiliary tool 1h is fitted into the drive shaft 1f. Then, the operator rotates the handle 1 h ′ of the rotation assist tool 1 h to drive the connecting insulating rod 1 b in the direction away from the switch unit, thereby moving the movable electrode 25 further away from the fixed electrode 5. Thereby, the contact 47 is brought into a disconnected state. Thereafter, the rotation assist tool 1h is removed from the drive shaft 1f, and the connecting component 1e is attached, whereby the transition to the disconnection position is completed. It should be noted that the rotation direction of the gear 1a is the same as the direction in which the gear 1a is rotated when shifting from the closing position to the blocking position when shifting from the blocking position to the disconnecting position. The position of the fulcrum is displaced by the main transition process from the disconnection to the disconnection, and the direction in which the gear 1a rotates is reversed even when the force in the same direction is applied from the operating device 43.

  In the cutoff position, the gear 1a is fitted at the p2 position of the connecting insulating rod 1b. However, at the disconnecting position, the gear 1a is fitted at the p3 position of the connecting insulating rod 1b and moves by G2. ing. Further, it is necessary to perform lightning protection at the disconnection position, and the transition distance from the cutoff position to the disconnection position is longer than the transition distance from the closing position to the cutoff position (G2> G1).

  When shifting from the disconnecting position to the blocking position, the connecting component 1e is also removed, the connection between the operating device 43 and the connecting member 1c is disengaged, and the rotation assisting tool 1h is fitted into the drive shaft 1f. Thereafter, the handle 1h ′ is rotated to drive the connecting insulating rod 1b in a direction approaching the switch portion, and the contact 47 is shifted to the cutoff position. Subsequently, the rotation assist tool 1h is removed from the drive shaft 1f, and the connecting part 1e is attached, whereby the transition to the blocking position is completed. In addition, when making it transfer from a disconnection position to the interruption | blocking position, the rotation direction of the gear 1a by the rotation auxiliary tool 1h becomes reverse to the case where it transfers to the disconnection position from the interruption | blocking position.

  When shifting from the disconnecting position shown in FIG. 4A to the grounding position shown in FIG. 5, the operating unit 43 pushes the link part 1k in the direction in which the link part 1k approaches the gear 1a again (solid arrow direction). This time, the position of the fulcrum is reversed from the case of shifting from the shut-off position to the closing position, and the gear 1a rotates counterclockwise. Thereby, the connection insulation rod 1b drives in the direction away from a switch part. At this time, the main circuit insulating rod 23 connected to the connecting insulating rod 1b is also driven in a direction away from the switch portion. In this embodiment, the main circuit lever 6 is connected to the main circuit insulating rod 23, The ground circuit lever 7 rotates in conjunction with the rotation of the main circuit lever 6. Therefore, the grounding circuit insulating rod 22 moves in the direction approaching the fixed electrode side of the grounding circuit switch unit 20, and the contact is turned on. As a result, the load side is grounded via the connection conductor 48, the cable head 45 and the cable 42. In the disconnecting position, the gear 1a is fitted at the p3 position of the connecting insulating rod 1b. However, in the grounding position, the gear 1a is fitted at the p4 position of the connecting insulating rod 1b, and moves by G3. Since G1 and G3 are movements in the same stroke by the operating device 43, G1 = G3 <G2.

  When shifting from the ground contact position to the disconnection position, the operation unit 43 pulls the link portion 1k in a direction away from the gear 1a (in the direction of the dotted line arrow). As a result, the gear 1a rotates clockwise, and the connecting insulating rod 1b is driven in the direction approaching the switch portion. Therefore, the main circuit insulating rod 23 connected to the connecting insulating rod 1b is also driven in a direction away from the switch portion. The main circuit lever 6 is connected to the main circuit insulating rod 23, and the ground circuit lever 7 rotates in conjunction with the rotation of the main circuit lever 6. The grounding circuit insulating rod 22 to be connected is separated from the fixed electrode side of the grounding circuit switch unit 20. Thereby, a contact is opened and it transfers to a disconnecting position from a grounding position.

  According to the present embodiment, the coupling member 1c connected to the operating device 43 side, the coupling member 1d connected to the gear 1a side, and the fulcrum 1i that couples both together so as to be rotatable about itself. The fulcrum 1i is provided at a position shifted to one side from the straight line connecting the connecting position of the connecting member 1c and the operating device 43 and the connecting position of the connecting member 1d and the gear 1a, and passes through the rotation assist tool. The fulcrum 1i can be displaced to a position shifted from the straight line to the other side by an external force, and the rotation direction of the gear 1a with respect to the operation force generated by the operation device 43 before and after the displacement is reversed. Yes. Therefore, even if one controller is used, it is possible to stop at two or more positions, and it is possible to switch positions exceeding two positions. Furthermore, it can switch to 4 positions by switching between two positions with external forces other than the said operating device. Accordingly, it is not necessary to provide three operating devices when switching the four positions, and it is possible to provide a switch operating unit that is reduced in size and weight.

  Moreover, it is only necessary to provide a rotating body and a rod that operates in conjunction with the rotational motion of the rotating body without using the gear 1a and the connecting insulating rod 1b provided with the concave and convex portions that can be fitted to the gear 1a. It is not essential to transmit the operating force by fitting the gears.

  In the above embodiment, the operation device 43 can be switched between two positions in a substantially linear shape, but an operation device that generates a driving force capable of rotating the rotating body to a plurality of positions can also be used. In this case, more positions can be switched. In this case as well, it is only necessary to enable an operation in which the rotating direction of the rotating body with respect to the operating force of the operating device is reversed like the breaking / breaking path in the present embodiment. Other than the operation of the external force, a symmetrical operation in the reverse direction is possible.

  Further, in this embodiment, a connecting member 1c connected to the operating device 43 side, a connecting member 1d connected to the gear 1a side, and a fulcrum 1i that connects both of them so as to be rotatable about itself are provided. Is connected to the operating device 43 and the rotator, and includes a connecting portion that converts the substantially linear operating force generated by the operating device 43 into the rotating force of the rotator, and By rotating the rotating body with an external force other than the operating device 43, the connecting portion can be displaced, and if the rotating direction of the rotating body with respect to the operating force of the operating device 43 is reversed before and after the displacement, the operating device It can be configured to be switchable to four positions by the operation force generated by 43 and the external force. This also makes it possible to reduce the number of operating devices.

  Further, in this embodiment, when switching the 4 positions, the case of switching the 4 positions of closing / breaking / disconnecting / grounding is explained, and in particular, switching of the disconnecting / breaking disconnection is performed by an external force other than the operation unit 43. This configuration has the following advantages.

  That is, in order to ensure the safety of the switch and the energization performance, it is necessary to satisfy the fast switching speed required during continuous operation of turning on and off and continuous operation of disconnecting and grounding. Therefore, switching of these positions can be performed with a driving force by the operation device 43 (electromagnet or the like) capable of high-speed operation. On the other hand, at the time of continuous operation of interruption and disconnection at the intermediate position, a higher opening / closing speed than the above is not required. Therefore, the continuous operation of interruption and disconnection can be performed with another external force that does not use an operating device. The external force includes manual operation. In other words, it can be operated at an optimum speed according to the required speed.

DESCRIPTION OF SYMBOLS 1a Gear 1b Connection insulation rod 1c Connection member 1d Connection member 1e Connection part 1f Drive shaft 1g Surface parallel to gear 1h Rotation auxiliary tool 1i Support point 1k Link part 4 Insulation container 5 Fixed electrode 6 Main circuit lever 7 Grounding circuit lever 8 Support shaft 13 Housing 14 Circuit switch unit 20 Ground circuit switch unit 21 Main circuit switch unit 22 Ground circuit insulation rod 23 Main circuit insulation rod 24 Guide mechanism 25 Fixed electrode 40 Busbar 42 Cable 43 Controller 44 Control device room 45 Cable head 46 Switch unit 47 Contact

Claims (7)

A rotating body, a rod that operates in conjunction with the rotational motion of the rotating body, an operating force generator that generates a driving force that can rotate the rotating body at a plurality of positions, and the operating force generator and the rotating body. A connecting portion that converts a substantially linear operating force generated by the operating force generating portion into a rotational force of the rotating body,
By rotating the rotating body with an external force other than the operation force generating unit, the connecting unit can be displaced,
The switch operating unit according to claim 1, wherein the rotation direction of the rotating body with respect to the operating force of the operating force generating unit is reversed before and after the displacement of the connecting unit by an external force other than the operating force generating unit. The switch operating portion according to claim 1,
The connecting portion includes an operating device side connecting member connected to the operating force generating portion side, and a rotating body side connecting member connected to the rotating body side,
The operating device side coupling member and the rotating body side coupling member are coupled via a fulcrum and are pivotably coupled around the fulcrum.
The fulcrum is provided at a position shifted to one side from a straight line connecting a connection position of the connection portion with the operating force generation portion and a connection position of the connection portion with the rotating body,
Due to an external force other than the operating force generating portion, the fulcrum is moved from the straight line connecting the connecting position of the connecting portion to the operating force generating portion and the connecting position of the connecting portion to the rotating body to the other side. An operation part for a switch, which is displaced to a shifted position. The switch operating portion according to claim 2,
The operating force generator can be stopped at two positions in a substantially straight line,
The switch operating unit can switch between four positions of on / off / disconnect / ground for one or more switches connected to the switch operating unit,
The switch operating portion, wherein switching from the breaking position to the disconnecting position in the switch is performed by displacement of the fulcrum by an external force other than the operating force generating portion. The switch operating portion according to claim 2 or 3,
The operating part for a switch, wherein the rotating body is a gear, and the rod includes an uneven portion that can be fitted to the gear. The switch operating part according to any one of claims 2 to 4,
The rotating body has a drive shaft at the center of rotation, and rotates as the drive shaft rotates,
The switch operating portion is connected to the drive shaft. The switch operating part according to claim 5,
The switch operating unit further includes a rotation assisting tool that can be fitted to the drive shaft, and the rotation assisting tool can apply the external force. The switch operating part according to any one of claims 2 to 6,
A link portion connected to the operating force generation portion and the operating device side coupling member;
A guide portion provided around the link portion to prevent movement of the link portion from deviating from a predetermined substantially linear shape;
The link part and the operation unit side connecting member are connected, and further includes a removable connecting part,
The switch operating unit, wherein the link unit and the operating unit side connecting member are connected to each other so as to be rotatable about the connecting component.