Elevators TRIZ Cases

A safety circuit introduces a time delay between contact opening and brake activation to manage deceleration.

Segmented guide brackets provide floor-level access to measurement tape lines, resolving maintenance inflexibility while maintaining cable protection.

An elevator display system computes estimated arrival times for assigned cars and presents them on target floor registration units.

Segmented drive modules with integrated guidance reduce assembly complexity and vibration in high-rise elevator shafts.

Frequency converter deceleration data enables continuous mechanical brake condition monitoring without service interruptions.

A mobile device controls elevator positioning and safety protocols to eliminate manual intervention risks during maintenance access.

Logic unit correlates drive power with movement direction to determine elevator car load without permanent sensors, resolving retrofit complexity.

A lift safety mechanism employs a friction brake and frangible element to prevent catastrophic failures from wear or power loss.

Switching device segmentation resolves bandwidth limitations during elevator signalization device commissioning.

A control device uses door and occupant sensors to manage elevator cab accessories via a timer and contactor.

A sensor arrangement mounted on a carrier travels along elevator guide rails to detect deviations from vertical alignment using plumb line references.

Elevator controller sends component condition notifications to mobile stations, eliminating on-site mechanic visits and reducing downtime.

Optical detection system measures elevator car position relative to safety height for precise servicing space definition.

Threaded rod mechanism allows external adjustment of the elevator door interlock, resolving complex installation alignment issues.

Curved brake shoes mounted on sliding holders resolve the contradiction between high braking force and limited installation height in elevator systems.

Grouped bus node polling adapts request frequency to sensor urgency, improving communication speed without increasing system complexity.

Vertically movable compensation guide mounted on the counterweight screen supports the elevator compensation element during normal operation.

A solenoid actuator moves a friction member against an elevator guide rail to damp vertical oscillations.

A lift system uses a control unit to initiate a preemptive acceleration impulse on passengers before speed changes occur.

A semi-rigid curtain elevator apron folds upon contact with the pit floor to maintain safety coverage.

Automatic coupling locks conveyors against brake frames, eliminating uncontrolled free fall and reducing impact forces.

A monitoring device evaluates supply voltage gradients to detect impending switch failures in elevator safety circuits.

Segmented guide rails engage safety devices only during emergencies, resolving the contradiction between ride comfort and derailment prevention.

A safety controller manages elevator car velocity profiles to execute controlled stops during non-critical failures.

Adjustable output coil winding counts optimize spatial distribution to reduce detection errors in rotation angle sensors.

A control unit processes multi-dimensional call request messages containing user identification and resource demand features to generate dispatching commands.

Inductive radio-frequency measuring apparatus determines elevator car position using passive identifiers, eliminating mechanical contact failures.

A mechanical release device disengages the second friction lining from the elevator rail using a wedge or threaded bolt.

Rotation reversal pivots centrifugal bodies to decouple the speed limiter, eliminating downtime from manual resets and restoring safety gear readiness.

Displaceable cover parts retract to clear hoisting space for the support structure while maintaining safety protection against falling objects.

Movable platform with laser transmitters compensates for elevator shaft bending, ensuring accurate guide rail alignment.

A power-loss triggering device uses an electromagnet and spring-loaded impact bar to activate elevator brakes.

A flexible barrier in the elevator pit deforms to accommodate the car, preventing personnel injury when pit depth is reduced below standard clearance limits.

An elevator controller adjusts stopping distance using recorded trip data to maintain consistent car leveling at landings.

Depth sensor assembly detects user body orientation and gaze direction to issue elevator call signals.

Elevator control system discharges high-energy batteries to safe levels, preventing injuries during maintenance of Li-Ion units.

Monitoring system detects guide wheel rotational anomalies via Hall-Effect sensors, preventing hazardous mechanical failures and reducing service downtime.

Automated alignment apparatus replaces manual adjustments by using measuring devices and actuators to adjust elevator guide rails, ensuring consistent quality.

Flexible pit barrier deters personnel from hazardous zones using deformable uprights.

A stationary elevator door monitor system eliminates traveling cable dependencies through dedicated control and ventilation components.

A single lifting platform raises and locks elevator drive platforms sequentially, reducing device complexity and construction costs.

A controller manages ropeless elevator cars through in-group and out-of-group modes.

Access detection mode shuts down the elevator drive to prevent unexpected car movement while maintenance personnel work in the hoistway.

A processor detects elevator door motion by summing absolute X and Y axis acceleration values.

An optical encoder mounted to the roller guide detects elevator car motion state via reflected light signals.

Melamine-based geometry stabilizers prevent polymer jacket dripping during fires by forming an intumescent shell that maintains structural integrity.

A summation frame field bus system transmits signals via a closed ring topology between central control units and distributed elevator devices.