Building Lifts TRIZ Cases

Segmenting detection into a primary door sensor and a supplemental interior unit expands safety coverage beyond the immediate doorway.

Axially projecting circumferential stops transmit drive torque between separate elevator support shaft and traction sheave components.

Motor torque detection enables automatic diagnosis of hall door self-closability, reducing maintenance burdens caused by aging-related running loss.

Transferring car and hoisting machine loads from rails to the building's top-story floor beam reduces rail size and apparatus cost.

Active control replaces precise mechanical coupling, reducing assembly complexity while maintaining operational reliability.

Angled magnet layers and perpendicular coils minimize thrust force ripple in ropeless elevator systems, improving ride quality.

Segments elevator car structure with intermediary isolation members to prevent vibration transfer while nesting sheaves within existing platform depth.

A hoist carriage uses a secondary coil to receive power from a primary conductor system along the movement path.

Stationary support bears hoistway door movement loads to reduce interlock wear and simplify installation alignment.

A stairlift load carrier uses combined gyroscope and accelerometer signals to maintain horizontal orientation.

A circular elevator cabin uses nested hollow uprights to house structural supports inside the lift platform frame.

A landing jamb design plate uses sacrificial intermediate members to allow controlled displacement during thermal expansion.

Segmented dual motor and rotator mechanism ensures stairlift reliability when one drive unit fails.

Dynamic elevator door control adjusts open times based on traffic patterns to reduce energy consumption during non-peak hours.

Offset connection points on a pivotable plate allow the working platform to extend fully while keeping a compact footprint in small elevator cars.

An integrated asynchronous door knife combines the dynamic blade and unlocking mechanism into a single assembly to simplify installation.

Adjustable coupling rollers in an elevator door interlock separate unlocking and movement functions, resolving misalignment issues during installation.

Upper and lower rollers maintain carriage alignment on curved guides, reducing wear and improving safety.

Curved emitter and receiver strips match arched guide means, resolving detection gaps in circular elevator doors.

A pivoting mounting arm lifts and aligns an elevator drive into the shaft head using mechanical rotation.

Gearwheel rotation detection replaces slow inclination sensors, enabling faster control responses for incline lift units.

Segmented upper beam system with lateral C-profiles creates central clearance for trap door opening and refuge space volume.

Moving guides below sheaves aligns them with traction members, resolving rail misalignment and enabling additional traction capacity.

Shortened vertical support parts create shaft pit space for buffers while elastic bearings reduce friction losses.

Internal fastening through standing sections improves panel assembly workability by eliminating shaft access.

Y-shaped intermediate members reduce bending deformation and oscillation by minimizing distance between supported portions.

A moveable toe guard panel transitions between vertical and horizontal positions to adjust elevator car clearance.

Snap-fit cross members connect to uprights, reducing installation complexity and specialized labor requirements.

A telescopic cylinder uses guide devices interacting with partial cylinder surfaces to ensure stable vertical movement.

An elevator apron moves vertically to overlap with the door in a retracted position.

Integrating the elevator inside the tower cross-section simplifies construction complexity while optimizing space for transport and setup.

A magnetically actuated elevator door lock pivots a ferromagnetic latch using permanent magnetic attraction to replace complex solenoid assemblies.

Adjustable attachment sections orient pressure sensors relative to elevator door panels, resolving detection failures caused by non-parallel door hitting faces.

Tiltable construction hoist loading surface bridges varying deck gaps without custom walkways, reducing reassembly time.

An embedded sensor in a resilient elevator door panel detects obstruction deflection to reopen the door and prevent passenger injury.

Movable locking means engage automatically via gravity and spring forces to prevent accidental folding of the protective wall under load.

A ventilation duct formed from insulating material reduces elevator car noise while maintaining airflow.

Segmented frame parts with orthogonal rotational joints allow the stair lift drive to navigate sharp turns and twisted tracks without jamming.

Top and bottom locks synchronize via linkages to prevent door deviation during testing while resisting vandalism.

A rubber gasket with a spring section seals elevator shaft gaps between beams and panels, eliminating adhesive application in narrow spaces.

Segmented rail and mounting brackets eliminate custom manufacturing lead times while accommodating unique stairway dimensions.

Pre-assembled machine station brackets align elevator hoisting components with guide rails, eliminating time-consuming on-site measuring and plumbing errors.

A friction belt drive uses embedded markers and sensors to track position for precise elevator door movement.

A modular dock housing system uses integral fork pockets and slotted base attachments for rapid assembly without concrete construction.

Replacing hydraulic systems with a push chain mechanism eliminates odor and reduces horizontal space requirements for double-deck elevator car displacement.

Integrating the braking surface into the bearing stand reduces component count and manufacturing expense while maintaining reliable braking performance.

Doppler sensors in the safety shoe measure approach velocity to extend door opening time, preventing collisions while reducing service delays.