Blocking device for elevator system and elevator system

A blocking device for an elevator system, comprising:

• a base, configured to be mounted in an elevator hoistway at a preset distance from a top or bottom of the elevator hoistway;
• a first signal member and a second signal member, fixed relative to the base;
• and
• a rod, pivotally fixed to the base with a first end connected to one end of a rope arranged in the elevator system, and configured such that:
• when the other end of the rope is operated to tighten the rope to pivot the rod to a first preset position, the rod triggers the first signal member to generate a first signal, and the elevator system is allowed to operate normally in response to the first signal;
• when the other end of the rope is operated to release the rope to pivot the rod to a second preset position by gravity, the rod triggers the second signal member to generate a second signal, and the elevator system enters a stopped state in response to the second signal.