Elevators TRIZ Cases

This elevator brake auxiliary drive uses pivoting friction to reduce the reset air gap, simplifying automatic actuation and deactivation.

Frictional rail contact triggers elevator braking through a separate coupling link.

This elevator brake uses gravity, springs, and minimal components to avoid continuous power while maintaining robust emergency braking.

Shipping-container-based modules enable rapid elevator shaft assembly and dismantling while supporting pre-installed car guides.

A rotatable fastening flange guides the spindle drive through the cabin-frame cutout for easier removal while damping vibration.

Corrosion inhibitor in the jacket protects bare steel cords without pre-coating.

Destination-based elevator profiles adjust speed and braking for safer, simpler pit layouts.

This case uses a gas reservoir and pneumatic drive to shift elevator energy use off-peak and support outage operation.

A keyed drum sheave winds cables to retract locking pins, opening the elevator ceiling panel for tool-free maintenance access.

A robotic platform uses sensors and a controller to map hoistways, inspect elevator cars, and flag abnormal operating conditions.

Operational state data feeds a neural model to identify genuine trapped events and reduce unnecessary rescue dispatches.

Timed detection of the elevator car and counterweight measures suspension member elongation without absolute position referencing.

Elevator control uses door and usage monitoring to detect logistic operations and avoid assigning new calls to occupied cars.

A two-position coil-current method estimates brake gap and spring condition, reducing manual elevator brake inspections.

A mobile screen continuously displays elevator car position, helping technicians avoid unsafe shaft access during maintenance.

Segmented cable densities distribute elevator mass to limit frame moments and pressure on car shoes or rollers.

Operational state data feeds a neural network that estimates trapped-event probability and reduces unnecessary elevator rescue dispatches.

A computer tracks rope bending at wheel contact positions and compares limits to support timely elevator rope maintenance.

This case uses selectable arrival chimes near the doors to distinguish assigned elevator cars for passengers with disabilities.

A movable level meter on the protective cover indicates counterweight position, simplifying clearance measurement.

Crowd sensing adapts elevator dispatching to lobby occupancy and variable arrivals.

A controller selects user-preferred arrival chimes so passengers with disabilities can locate their assigned elevator car at the landing.

This case adjusts elevator load settings from real-time measurements, reducing empty dispatches and passenger wait times.

Pre-assembled lift modules use shaft-contact stabilisers to maintain alignment and speed installation in tall-building cores.

This case uses transmitter-receiver signal-strength thresholds to detect hoistway presence and trigger elevator safety actions.

Real-time charge and cell-voltage feedback routes calls to charging floors, sustaining elevator service without dedicated charging downtime.

Historical traffic and real-time bend data identify worn elevator belt segments and guide inspectors to precise hoistway locations.

This case uses traffic-responsive weighting and smoothing to balance elevator waiting time, transit time, and handling capacity.

Shock-absorbing protective elements and electronic detection help secure historic open elevators while preserving maintenance access.

A safety controller distinguishes critical from non-critical device changes, stopping immediately or allowing safe travel to a landing.

Multiple image regions let one super-wide-angle camera detect elevator users and support door safety without multiple cameras.

When parameters change remotely, the elevator enters out-of-service mode for functional safety tests before returning to service.

This case uses one touchless sensor across elevator input regions to reduce microbial transmission and component count.

Predetermined routes coordinate multiple elevator cars, reducing user input while making scheduled operation more predictable.