Broken chain detection device

The utility model relates to the technical field of automatic elevators, and discloses a broken chain detection device which comprises a car cross beam, and a mounting hole is formed in the end, away from the center position, of the car cross beam. According to the broken chain detection device, when a chain is broken, the whole tripping linkage mechanism is pulled upwards, when the whole tripping linkage mechanism is pulled out of the outer side of the mounting shell, a connecting shaft of a second unhooking connecting block located on the lower portion rotates so as to be tripped and move upwards, and a sensing piece and a sensor located on one side of the second unhooking connecting block generate relative displacement; when the elevator is in use, the induction piece is separated from the detection range of the sensor, the sensor sends out a signal, the signal is transmitted to the controller through the wire, the controller controls the motor to brake emergently, the function of protecting equipment is a