Special app lock for high-voltage isolation switch

Abstract

The invention discloses a special app lock for a high-voltage isolation switch. The special app lock is characterized in that a lock shell, a lock cylinder, a cam plate, a lock tongue, a limiting mechanism, a microswitch, a screw rod, a tension spring and a lock cover are included, the lock shell is further provided with a lock hole; the lock cylinder is installed in the lock hole; the cam plate is installed at the top end of the lock cylinder; the lock tongue is connected with the lock shell; the limiting mechanism is installed on a vertical face of the lock shell; the microswitch is installed on the bottom face of the lock shell; the screw rod is connected with the lock tongue; the tension spring is respectively connected with the lock shell and the screw rod; the lock shell is connected with the lock cover. In the preceding mode, the special app lock for the high-voltage isolation switch is designed in a pure mechanical mode, interlocking of the isolation switch, a door and a vacuum contactor is eliminated, and the special app lock is easy to operate and reasonable in structure, does not need electricity and saves energy and materials.

Description

technical field [0001] The invention relates to a door lock, in particular to a special program lock for a high-voltage isolating switch. Background technique [0002] The high-voltage isolating switch is a manually operated power switch. At present, only electrical interlocking can be used to meet the "five defenses" requirements. For the isolating switch that cannot be electrically operated, it is really a problem for the electrical designer. Convert to electrical interlocking solution. For example, customize an electromagnetic lock installed in the pin-pull hole to be interlocked with the limit switch on the door, that is, the door is closed, the limit switch is closed, the electromagnetic lock can be powered to pull the pin, and then the handle can be operated; after the door is opened, the limit switch is closed. The position switch disconnects the electromagnetic lock circuit, and the action of pulling out the pin cannot be carried out, so it remains at the position a...

AI Technical Summary

Problems solved by technology

However, there is a loophole here. When the handle is not pulled in place, the pin of the electromagnetic lock is not aligned with the breaking hole of the handle. When the door is not closed, the handle can also be closed, so that the cabinet with the open door is charged. life threatening

[0003] At present, it is still impossible to open the vacuum contactor first and then pull the isolation switch handle

Images