Elevators TRIZ Cases

A one-piece plastic guide element with an integrated collar and engagement feature secures elevator counterweights to yokes.

A hydraulic elevator safety device uses a two-stage threshold system to detect abnormal car movement and prevent false braking during open-door states.

Nested linkage and electromagnetic latch actuate safety brake during over-speed events, reducing system complexity.

Text-based elevator communication replaces voice alarms with digital messaging, reducing wait times and operational costs through parallel handling.

Motor drive position deviation determines loading state, eliminating sensor errors that impair ride comfort and stopping accuracy.

An adjustable holding element reduces energy consumption by varying magnetic force based on operational modes.

Brake safety control detects non-critical events and initiates automatic resetting by moving the elevator travel body to stress the braking element.

Shape memory alloy wires homogenize contact pressures on ropes passing through pulleys under 130 mm, reducing fatigue damage.

A lift fault detection device monitors car movement parameters to identify operational anomalies and trigger maintenance signals.

A monitoring device compares measured procedure frequencies against estimated values to detect equipment unavailability.

A mobile-based elevator control system detects assigned car delays and reassigns calls to alternative units.

Dynamic tension adjustment mitigates rope sway and structural damage during building lateral motion without reducing elevator speed.

Differentiated coating hardness increases flexural rigidity between load-bearing members while maintaining friction for drive wheel engagement.

Weight measurement detects brake release to eliminate displacement sensors, resolving reliability complexity trade-offs while ensuring safety compliance.

Fitted guide faces align the upper and lower covers to eliminate gaps at divided parts, preventing aesthetic deterioration and foreign substance introduction.

Multi-sensor floor position detection device segments elevator car location into distinguishable sub-areas for precise alignment.

Merging control and emergency systems onto one data line reduces installation costs while maintaining reliable communication.

Rotatable support mechanisms adjust receiver positions to suppress fading effects while preserving maintenance workspace.

Independent wall-mounted drives and counterweights for two superimposed cars reduce traction moments and resolve shaft volume constraints.

A hydraulic brake system uses a motor-driven pump to deliver fluid and set piston chamber pressure.

A folded textile rope assembly encased in a common sleeve ensures parallel load distribution between portions.

Mobile RFID transceivers replace stationary detectors, eliminating permanent electromagnetic fields and reducing installation costs.

A leveling fault detection method compares real-time sensor signal sequences against stored normal patterns to identify positioning errors.

Hydraulically-powered braking assemblies guide elevator cars to controlled stops, preventing abrupt mechanical engagement that causes passenger entrapment.

A group management control device determines assigned elevator cars and outputs hall lantern lighting instructions only when a disabled person signal is detected.

Elevator control system overrides initial servicing routes to serve new passenger requests, reducing wait times without completing the first direction.

Segmenting the interface into separate key and rotary knob inputs resolves mobility access barriers while maintaining operational simplicity.

A call controller switches elevator operation modes based on traffic thresholds to allocate cars efficiently.

Dynamic braking force suppresses main rope vibration, enhancing ride comfort and safety.

Branch and bound algorithms with spectral relaxations minimize cumulative waiting times by approximating pairwise delays in dynamic passenger reassignment.

Onboard propulsion motors replace hoist cables, while proximity sensors maintain safe distances between cabs in the same shaft.

Predicting elevator usage patterns sets target storage states for an energy storage system, reducing demand on the primary power supply during peak conditions.

Inertial sheave and pawl mechanism detect elevator abnormal acceleration, enabling immediate safety device activation without waiting for overspeed thresholds.

Bypassing the landing stop button via a pit-mounted control unit reduces ladder climbs and tripping risks during deep pit maintenance.

A ropeless elevator system uses back EMF signals to determine car positions for precise stopping.

An elevator braking arrangement applies periodic hydraulic pressure cycles via a control unit to reduce passenger jerk during emergency stops.

Pivoting roof and cross members collapse the protection deck for rapid repositioning, resolving installation time versus reliability trade-offs.

Electromagnet actuates a translatable safety block to engage guide rails, eliminating complex mechanical linkages and reducing system volume.

A shaft door locking mechanism uses a position-dependent blocking element to secure elevator access.

Gravity-induced tension from a hanging weight reduces rope sway, minimizing stress and noise without complex damping mechanisms.

Sensor-based elevator door commissioning adjusts control parameters to resolve Stack Effect deviations and ensure operational precision.

Acoustic signals guide visually impaired users to assigned elevators, resolving navigation barriers.

Inertial measurement units track elevator car acceleration along multiple axes to calculate precise position relative to sync sensors.

Sealed power unit tank and moisture sensor prevent elevator car entry into flooded hoistway areas.

Car-mounted sensors detect elevator leveling offsets via combined accelerometer and ultrasonic data, eliminating costly landing wiring.

A mobile device transmits a time-dependent code to an elevator system for contactless destination requests.

Load weighing sensors determine axial hanging masses to identify stalling conditions, eliminating separate detection switches.

Dynamic resistance thresholds adapt to actual traffic patterns, resolving the contradiction between measurement precision and fixed threshold accuracy.

Lateral stops constrain a twisting web in an elevator brake lever to prevent sagging while allowing torsional movement for smooth operation.

Segmented sliding elements accommodate diverse rail geometries by repositioning damping inserts, eliminating complex housing adjustments.