Interlocking mechanism for drawer of low-voltage draw-out-type switchgear assembly

The utility model discloses an interlocking mechanism for a drawer of a low-voltage draw-out-type switchgear assembly. Compared with the prior art, all draw-out functional units can be pushed and plugged onto working positions from draw-out positions at a time by pressing a button so as to complete the plugging and unplugging of the functional units, the draw-out functional units also can be firstly pushed and plugged onto experimental positions and then are pushed and plugged onto the working positions from the experimental position by pressing the button so as to realize the effective separation and position locking of the experimental positions and the working positions, and a lock piece which is interlocked with a circuit breaker operation rod can realize the secondary locking of the entire functional units after the circuit breaker is switched on. The interlocking mechanism has simple structure, is safe, reliable, economical and practical, can greatly reduce the production and use cost, can be installed and used in a limited space which is half and a quarter of the draw-out function, and can ensure the effective separation of the experimental positions and the working positions of the small draw-out functional units.