Energy storage spring operating mechanism for low-voltage disconnecting switch

Abstract

The invention discloses an energy storage spring operating mechanism for a low-voltage disconnecting switch. The operating mechanism comprises an upper connecting rod, a lower connecting rod, a slide block, a rotating shaft, a spring guide rod and an energy storage spring, wherein one end of the upper connecting rod is connected to the bottom of a manual operating shaft and the other end of the upper connecting rod is contacted with a switch contact actuator; a long hole is formed on the upper connecting rod; one end of the lower connecting rod is hinged on the surface of a contact cover and the upper and lower surfaces of the other end of the lower connecting rod are respectively provided with an arc-shaped groove; two ends of the rotating shaft are inserted into the two arc-shaped grooves respectively; one end of the slide block is hinged on the lower part of the rotating shaft and the bottom surface of the other end of the slide block protrudes downward to form a boss; one end of the spring guide rod is connected to the manual operating shaft and the other end of the spring guide rod is connected to the middle part of the rotating shaft; and the energy storage spring is sleeved outside the spring guide rod. By utilizing the energy storage spring operating mechanism, the operating speed of an operator is guaranteed by utilizing an idle stroke on the lower connecting rod and is irrelevant to a switching action, so that the contact is rapidly connected and disconnected, therefore, an accident of burning the contact of the disconnecting switch is avoided.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, in particular to an energy storage spring operating mechanism of a low-voltage isolating switch. Background technique [0002] When maintaining electrical equipment, it is necessary to cut off the power supply, isolate the maintenance part from the live part, and maintain an effective isolation distance. At this time, a low-voltage isolation switch is required. The currently commonly used low-voltage isolating switch mainly includes a housing, a switch contact mechanism, a contact cover, a manual operation shaft and a handle; wherein the switch contact mechanism is located inside the housing; the contact cover is arranged on the upper end of the switch contact mechanism, and The switch contact actuator on the switch contact mechanism is movably inserted into the opening on the contact cover; an operating rod is connected to the lower part of the manual operation shaft, and the outer ...

AI Technical Summary

Problems solved by technology

But there is following problem in this prior art low-voltage isolating switch: the closing speed of the contact is related to the operating speed of the staff, so-called relative manpower operation, so that once the operating speed is too slow, the isolating switch is easy to burn

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