Ring assembly for elevator governor, governor and elevator system

A core ring assembly for an elevator governor, wherein the core ring assembly comprises:

• a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween;
• and
• a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring,
• wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates by virtue of friction of the contact surfaces and enables a safety activating module;
• wherein the first portion of the core ring has an opening for sleeving a fixed shaft and is capable of rotating around the fixed shaft;
• wherein the first portion of the core ring has a body, and a front side of the body of the first portion of the core ring defines a surface for frictional contact with the second portion of the core ring;
• wherein the front side of the body of the first portion of the core ring is formed as a convex conical surface;
• wherein a cylindrical contraction part extends from an inner ring on the front side of the body of the first portion of the core ring, and the second portion of the core ring is sleeved on the cylindrical contraction part of the first portion of the core ring.

A governor, wherein the governor comprises a core ring assembly, including:

• a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween;
• and
• a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring,
• wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates by virtue of friction of the contact surfaces and enables a safety activating module;
• wherein the second portion of the core ring is connected with an elevator safety gear pull rod.