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Elevator Door Lock Device Moving Contact Elevator Lobby Hook Floor Door Device Lock Elevator Door Lo

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December 18, 2025
Category Connection: Elevator Spare Parts
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#Elevator Spare Parts #Elevator Spare Parts Supplier #Lift Spare Parts
Brief: In this video, we provide a comprehensive walkthrough of the Elevator Door Lock Device, showcasing its critical role in elevator safety systems. You'll see how the mechanical locking mechanism and electrical verification work together to ensure secure operation. Stay tuned as we highlight the most important features and real-use results, including interlocking control logic and maintenance requirements for B2B professionals.
Related Product Features:
  • Dual protection system combining mechanical locking with electrical verification for maximum elevator safety.
  • Mechanical locking mechanism uses hooks and arms to firmly secure landing and car doors against impact.
  • Built-in door lock contacts send 'door closed' signals to the elevator control system when fully locked.
  • Interlocking control logic synchronizes landing door operation with car position for safe opening.
  • Available in passive door lock types with simple structure and high reliability for standard elevators.
  • Active door lock variants with electromagnetic unlocking for high-precision applications like medical elevators.
  • Manufactured by SULAB with model DI M, suitable for various elevator types and configurations.
  • Complies with mandatory inspection requirements including hook engagement depth and contact reliability checks.
Faqs:
  • What is the dual protection mechanism in this elevator door lock device?
    The device provides dual protection through mechanical locking that physically secures the doors using hooks and arms, combined with electrical verification where built-in contacts only close when mechanically locked, sending safety signals to the control system.
  • How does the interlocking control system work with elevator operation?
    The interlocking system links landing door operation with car position - the door lock only unlocks when the elevator car is stopped at the corresponding floor leveling area, ensuring doors cannot open when the car isn't properly positioned.
  • What are the main differences between passive and active door lock types?
    Passive door locks use the door's opening mechanism for unlocking and are ideal for standard passenger and freight elevators, while active door locks feature electromagnetic unlocking for higher precision in medical and high-speed elevator applications.
  • What maintenance requirements are essential for elevator door lock devices?
    Regular inspections must check hook engagement depth (minimum 7mm), contact reliability, and return spring elasticity to prevent failures that could cause elevator entrapment or safety hazards, as these are mandatory inspection components.
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