Shutter mechanism of switch cabinet

Abstract

The invention relates to a valve mechanism of a switch cabinet, which is composed of a crank arm device, a connecting rod, a guide rod, a fixed block and a valve, wherein, the guide rod is connected and fixed on the wall of the switch cabinet by the fixed block, the valve is sheathed on the guide rod by guide holes at the two ends of the valve, the two ends of the valve are connected with the crank arm by the connecting rod. The valve mechanism is characterized in that the guide rod is a drawn epoxy glass fiber rod, the fixed block is made from SMC insulating material; a nylon ring is respectively embedded in the guide holes at the two ends of the valve, The valve mechanism of the switch cabinet has the advantages of being capable of improving the flexibility of the valve motion, and eliminating the discharge and insulator breakdown accidents resulting from insufficient insulation distance among the guide rod, the fixed block and a contact arm of a circuit breaker.

Description

1. Technical field [0001] The invention relates to a shutter mechanism, in particular to a switch cabinet shutter mechanism. 2. Background technology [0002] The function of the switchgear valve mechanism is to cover the static contacts in the switchgear by the valve of the switchgear valve mechanism after the handcart circuit breaker in the switchgear is pulled out, so that the personnel will not be disturbed when operating in the switchgear. Electric shock accidents occur due to contact with static contacts; the current valve mechanism in the switch cabinet mainly consists of a crank device, a connecting rod, a guide rod, a fixed block and a valve. The guide rod is connected and fixed on the wall of the switch cabinet through the fixed block, and the valve passes through The guide holes at both ends are set on the guide rod, and the two ends of the valve are connected with the crank arm device through the connecting rod, and the crank arm device drives the valve to move ...

AI Technical Summary

Problems solved by technology

[0002]The function of the switchgear valve mechanism is to cover the static in the switchgear by the valve of the switchgear valve mechanism after pulling out the handcart circuit breaker in the switchgear. Contacts, so that personnel will not have electric shock accidents due to contact with static contacts when operating in the switch cabinet; the current valve mechanism in the switch cabinet mainly consists of a crank arm device, a connecting rod, a guide rod, a fixed block and a valve. The guide rod is connected and fixed on the wall of the switch cabinet through the fixed block, and the valve is set on the guide rod through the guide holes at both ends. The rod moves up and down; due to the high friction coefficient between the guide holes at both ends of the valve and the guide rod, the movement of the valve on the guide rod is not smooth; at the same time, because the valve is made of insulating material, the static contact will produce high pressure leakage to the valve electric current, thus prone to electric shock accidents; the guide rod and the fixed block are made of metal materials, in the switch cabinet of 24kV and above due to the limited space in the switch cabinet, after the handcart circuit breaker is pushed into the switch cabinet, the guide rod will , The insulation distance between the fixed block and the contact arm of the circuit breaker is not enough, resulting in the breakdown of the discharge insulator

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