Fall arrest device with ring connected to locking tooth

A fall arrest device with a ring connected to a locking tooth, comprising:

• a casing, wherein a top of the casing has a ring hole;
• a bottom of the casing has a rope exit;
• a mounting space is provided in the casing;
• the mounting space communicates with the rope exit and the ring hole;
• a part of the casing adjacent to an inner side of the ring hole forms a ring seat groove;
• a ring assembly, comprising a ring seat, a locking tooth, and a ring, wherein the ring seat is fitted into the ring seat groove;
• the locking tooth is connected to a side of the ring seat;
• a middle of the ring passes through the ring hole and an inner end of the ring is engaged with the ring seat;
• a main body, comprising a main shaft, a rotating drum, a spiral spring, a rope, and a braking assembly, wherein the main shaft is fixed in the mounting space;
• the rotating drum is rotatably fitted around the main shaft;
• a side of the rotating drum has a mounting portion;
• a spiral spring cavity is provided in the rotating drum;
• the spiral spring is disposed in the spiral spring cavity and is connected between the main shaft and the rotating drum;
• an end of the rope is engaged with the rotating drum and is wound around the rotating drum to have a plurality of turns;
• another end of the rope extends out of the rope exit;
• the braking assembly is engaged with the mounting portion and is configured to engage with the locking tooth.