Maintenance safety device for elevator and a operation method thereof
AssigneeOtis Elevator Company
InventorBin Wang
Life of this patent
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Abstract
The present invention provides a maintenance safety apparatus for an elevator system and a method for operating the same, and belongs to the technical field of elevators. The maintenance safety apparatus of the present invention comprises a safety switch, a door lock device, a linkage control assembly and a linkage locking assembly. The maintenance safety apparatus of the present invention is very simple to operate and is capable of ensuring the safety of the staff entering a hoistway for performing maintenance operations.
Claims26
A maintenance safety apparatus (100) for an elevator system, comprising:
- a safety switch (110) which, when placed in a first state, enables the elevator system to be in a maintenance operating mode, and when placed in a second state, enables the elevator system to be in a normal operating mode;
- a door lock device (120) configured to at least perform a locking operation and an unlocking operation on a landing door (10) in a manual mode;
- a linkage control assembly (130) driven by the door lock device (120) and linked with the locking operation and the unlocking operation, so as to cause the safety switch (110) to be placed in the first state during the unlocking operation, and to cause the safety switch (110) to be placed in the second state during the locking operation;
- and
- a linkage locking assembly (140) configured to place the linkage control assembly (130) in an actuation locked state when the landing door (10) is opened or during the opening operation of the landing door (10), and to place the linkage control assembly (130) in an actuation unlocked state when the landing door (10) is closed or during the closing operation of the landing door (10).
A method for operating a maintenance safety apparatus (100), comprising:
- performing an unlocking operation in a manual mode on a door lock device (120) while driving a linkage control assembly (130) to perform actuation, to enable a safety switch (110) to be placed in a first state, wherein the corresponding elevator system is enabled to be in a maintenance operating mode when the safety switch (110) is placed in the first state;
- opening a landing door (10), wherein when the landing door (10) is opened or during the opening operation of the landing door (10), the linkage control assembly (130) is placed in an actuation locked state by a linkage locking assembly;
- closing the landing door (10) after a staff goes out from a hoistway, wherein when the landing door (10) is closed or during the closing operation of the landing door (10), the linkage control assembly (130) is placed in an actuation unlocked state by the linkage locking assembly;
- and
- performing a locking operation in a manual mode on the door lock device (120) while driving the linkage control assembly (130) to perform actuation, to enable the safety switch (110) to be placed in the second state, wherein the elevator system is enabled to be in a normal operating mode when the safety switch (110) is placed in the second state.
Dependencies are inferred from the claim text.