Elevator door interlock device, elevator door interlock operation method and elevator system

An elevator door interlock operation method, comprising steps of:

• arranging an elevator door interlock device having a first state and a second state on an elevator car, wherein the elevator door interlock device is allowed to operate a landing door lock at a current arrival position of the elevator car to open or close a landing door in the first state, and to make no contact with the landing door lock in the second state;
• and
• determining a traveling direction of the elevator car, and enabling the elevator door interlock device to be in the first state when the elevator car travels in a vertical direction, and to be in the second state when the elevator car travels in a horizontal direction and to switch to the first state to open or close the landing door after the elevator car reaches a landing door position, and to return to the second state when the elevator car continues to travel in the horizontal direction;
• wherein the elevator door interlock device is configured to include two assemblies arranged opposite to each other, each assembly comprising:
• a base portion arranged on the elevator car;
• an operating portion movably mounted on the base portion;
• and
• a drive portion configured to drive the operating portion to move on the base portion such that the operating portion is capable of reaching a first position and a second position, wherein when respective operation portions of the two assemblies reach the first position and the second position, the elevator door interlock device is in the first state and the second state, respectively;
• wherein the operating portion is made to move along a guide rail arranged on the base portion, and a limiting portion is arranged on the guide rail to limit a relative displacement of the operating portion with respect to the guide rail in the horizontal direction.