Mitsubishi Double Folded Side Opening Landing Door Device

Product Description

Elevator swing door, elevator door closer, elevator landing door / Electric components elevator landing door device

SN-DM-MLL/R Mitsubishi Type
Double-folded side opening landing door device

JJ	700	800	900	1000	1100	1200	1300	1400	1500	1600	1700	1800
A1	1226	1376	1526	1676	1826	1976	2126	2276	2426	2576	2726	2876
B1	225	275	325	375	425	475	525	575	625	675	725	775
C1	375	425	475	525	575	625	675	725	775	825	875	927
D1	/								1425	1525	1625	1725

Elevator Landing Door Device - Ensuring Safe and Reliable Access to Elevator Shafts

The elevator landing door device is a critical safety component in vertical transportation systems, designed to secure elevator shaft entrances at each floor while allowing controlled access when the cabin arrives. These doors prevent accidental falls into the shaft and ensure passengers can safely enter and exit the elevator.
Key Features & Functions

Mechanical & Electrical Locking - Integrates with door locks (e.g., roller latches, solenoid locks) to prevent unauthorized opening when the elevator is not present 48.
Interlock System - Ensures the landing door only opens when aligned with the car door, using mechanisms like door couplers (door knives) for synchronized operation 46.
Safety Compliance - Meets international standards (EN 81-20/50, ASME A17.1) for strength and durability, resisting forced entry while allowing emergency access via key-operated releases 12.
Automatic Reclosure - Equipped with springs or counterweights to force doors shut if left open, maintaining shaft integrity 48.

Applications & Benefits
Commercial & Residential Buildings - Provides secure, smooth operation for high-traffic environments.
Emergency Access - Supports firefighter and maintenance entry via dedicated unlocking mechanisms 18.
Enhanced Passenger Safety - Reduces risks of entrapment or accidental falls with fail-safe designs.

Our factory:







About us

Why choose us?
Shanghai Sunny Elevator Co., Ltd, founded in 1992, is a 33-year professional manufacturer specializing in designing and producting Opto-Electro-Mechanical products.
Sunny Elevator has started import and export since 2012.
We have experience in exporting all kinds of elevator parts and complete elevator to 80 countries all over the world.

FAQ
1. Are the elevator wire ropes durable?
The elevator wire rope has special provisions and requirements. Configuration is not only for wire rope and rated load, but also considered the size of the traction, as a result, the tensile strength of wire rope is greater than the weight of the lift. The safety factor is equipped with more than four wire rope. So it won't break at the same time.
2. Is it dangerous for power failure suddenly during the elevator running?
If it occurs, the elevator will automatically stop due to the electrical and mechanical safety device. In case of power failure,elevator brakes will automatically taken. In addition, the power supply departments such as planned outage, prior notice are also operating.
3. Will us be hurt when it closed suddenly?
In the closing process, if people touch the hall door, the door of elevator will automatically restart without any danger. With anti clamping switch, once the gate touched, this switching action make the elevator unable to be closed and even reopened. In addition, closing force is also available here.
4. How the elevator running?
Elevators are operated with a counterweight wire rope through the (tractor) traction drive, making ups and downs on the guide rail.
5. Is the escalator installation complicated?
We believe the functions of an escalator are not necessarily proportional to the operation complexity. Therefore, escalators designed by us apply an integrated structure, so that the equipment is more precise and more efficient and allows easier and more convenient commissioning.
6. Do you have any cerifications?
Yes, we do with ISO9001 / CCC / CE Certificates for u.