Mechanical safety interlock with redundant locking tongue arrangement

Abstract

The utility model discloses a mechanical safety interlocking device with redundancy lock tongue structure, including the lock shell, two lock tongue drive mechanisms symmetry are arranged on the lock shell, the stable guide mechanism is arranged in the lock shell between the correspondence two lock tongue drive mechanisms, the utility model discloses two lock tongue drive mechanisms, form double redundancy lock tongue security guarantee, make two lock tongues bear locking load independently, avoid single lock tongue failure, another lock tongue still can keep the locking state, effectively avoid safety interlocking failure fault, improve the lock reliability, two lock tongue drive mechanisms independent operation, when one of lock tongue drive mechanisms fails, another lock tongue drive mechanism still can complete locking, reduce lock tongue jam risk, improve the lock independent work ability, adapt to the stable operation under complex working condition.

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