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Elevator design by the German engineer ... Overload sensor – prevents the elevator from moving until excess load has been removed. ... In hydraulic elevator systems ...
For example, elevators are equipped with an interlock that prevents the moving elevator from opening its doors and prevents the stationary elevator (with open doors) from moving. Interlocks may include sophisticated elements such as curtains of infrared beams , photodetectors , simple switches , and locks .
The device usually acts as the interface of a sensor (such as a light curtain), designed to signal a safety-related event, typically when the light curtain beam's being "broken". OSSD signals are the outputs from the protective device (light curtain or scanner) to a safety relay .
A destination dispatch elevator, here using a Compass system from Otis. Destination dispatch is an optimization technique used for multi-elevator installations, in which groups of passengers heading to the same destinations use the same elevators, thereby reducing waiting and travel times. This contrasts with the traditional approach, in which ...
The digital capacitive technology is based on a non-contacting ceramic sensor mounted inside the load cell body. As the load cell contains no moving parts and the ceramic sensor is not in contact with the load cell body, the load cell tolerates very high overloads (up to 1000%), sideloads, torsion, and stray welding voltages. [ 3 ]
Magnetic couplings offer protection against overload during operation. If the load on the driven component becomes too large, the two parts may slip out of sync and end the transmission of torque. This avoids damage to the system, protecting both the motor from excessive loads and the driven component from deformation.
Isolation valves, and control valves, that are used for example in systems containing hazardous substances, can be designed to close upon loss of power, for example by spring force. This is known as fail-closed upon loss of power. An elevator has brakes that are held off brake pads by the tension of the elevator cable. If the cable breaks ...
MULTI is the first cable-less elevator developed by TK Elevator (formerly ThyssenKrupp Elevator). Rather than using cables to lift the elevator, MULTI uses linear motors. [1] As well as moving vertically between floors of a building, MULTI can also move horizontally through a floor of a building. MULTI is being tested at Rottweil Test Tower. [2 ...