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Switchgear and switchgear operating mechanism

A technology of switch device and operating mechanism, which is applied in the direction of contact operating mechanism, power device inside the switch, electric switch, etc., which can solve the problem of longer disconnection time and achieve the effect of shortening disconnection time and improving stability and reliability

Active Publication Date: 2011-04-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the force of the return spring of the latch body is increased as a countermeasure, the breaking time becomes longer

Method used

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  • Switchgear and switchgear operating mechanism
  • Switchgear and switchgear operating mechanism
  • Switchgear and switchgear operating mechanism

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0046] First, use Figure 1 to Figure 9 A first embodiment of the operating mechanism of the switchgear of the present invention will be described. figure 1 It is a front view showing the ON state of the holding device of the operating mechanism of the switchgear and the holding control device. figure 2 is to include figure 1 Diagram of the off-state of the spring-operated mechanism of the device shown. image 3 is to include figure 1 Diagram of the ON state of the spring-operated mechanism of the device shown. Figure 4 ~ Figure 7 It is a diagram showing the process of the off operation during the transition from the on state to the off state. Figure 8 and Figure 9 It is a figure explaining the process of the ON operation during the transition from the OFF state to the ON state.

[0047] exist figure 2 and image 3 In , the movable contact 200 is connected to the left side of the link mechanism 6 . Such as figure 2 As shown, when the link mechanism 6 moves t...

no. 2 Embodiment approach

[0086] Figure 10 It is a front view showing main parts of a latch body and a solenoid lever of an operating mechanism of a switchgear according to a second embodiment of the present invention, and their surrounding parts. Here, the same reference numerals are assigned to the same or similar parts as those of the first embodiment, and redundant explanations will be omitted. In this embodiment, the front end portion 102 of the latch body 91 is formed as a convex arc surface (that is, a convex cylindrical surface), and the center position of the arc surface is formed to be in contact with the center of the roller pin 72a in the connected state. The center of the rotation axis 103 of the latch body 91 is roughly consistent with the straight line 111 . As a result, the force required to disengage the front end portion of the latch body 91 from the roller pin 72a at the start of disconnection is smaller, and it is possible to reduce the size of the electromagnetic coil and shorten...

no. 3 Embodiment approach

[0089] Figure 11 It is a front view showing main parts of a latch body and a solenoid lever of an operating mechanism of a switchgear according to a third embodiment of the present invention, and their surrounding parts. Here, the same reference numerals are assigned to the same or similar parts as those of the first embodiment, and redundant explanations will be omitted. In this embodiment, a latch body pin 91b is arranged on the latch body 91, and a ring 52 is arranged on the latch body pin 91b, and the ring 52 is movable in the radial direction of the latch body pin 91b. The inner diameter of ring 52 is larger than the outer diameter of latch body pin 91b.

[0090] Figure 12 and Figure 13 A state immediately before completion of the switching-on operation of the present embodiment configured in this way is shown.

[0091] When the latch body 91 is reset to the on-state position by the latch body return spring 91a, the latch body 91 collides with the roller pin 72a an...

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PUM

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Abstract

According to an embodiment, a switchgear operating mechanism has a roller pin rotatably fixed to a leading end of a latch lever. A latch is fixed to a solenoid lever at a position different from the rotation axis of the solenoid lever, and has a leading end engageable with the roller pin. In a state where the switchgear operating state is shifted from the closed state to the cutoff state, the solenoid lever is pushed by an electromagnetic solenoid for cutoff so as to be rotated in an opposite direction to the biasing direction of the solenoid lever return spring, and the latch lever is rotated by a biasing force of the roller pin to release an engagement between the roller pin and the leading end of the latch, which causes a cutoff spring to discharge its energy to rotate the latch lever.

Description

technical field [0001] The invention relates to a switch device and its operating mechanism for switching on and off an electrical circuit, and is especially suitable for breaking high-voltage current in a short time. Background technique [0002] In general, the operating mechanism of the switchgear includes an operating mechanism using a hydraulic operating force capable of obtaining a large output, and an operating mechanism utilizing a spring operating force with a medium / low output force. The former is called the hydraulic operating mechanism, and the latter is called the spring operating mechanism. Especially in recent years, the miniaturization of the arc-extinguishing chamber of the gas circuit breaker, which is a kind of switchgear, has been promoted, and a fault current can be interrupted with a relatively small operating force, so spring operating mechanisms have been used more and more. However, a gas circuit breaker of an ultra-high voltage class requires high-...

Claims

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Application Information

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IPC IPC(8): H01H3/30
CPCH01H3/3031H01H2003/3036
Inventor 丸岛敬小林义贤纲田芳明清水正治井上彻
Owner KK TOSHIBA
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