Portable Lifting TRIZ Cases

A rope hoist drum support uses asymmetric ribs and a distinct shaft axis to establish clear positioning references during assembly.

A capstan anti-reversing pawl mechanism uses a biased pawl and flexible coupling to transmit torque.

Segmented annular weights attach to the hook body to resolve the contradiction between high tensile load requirements and operator handling ease.

A damper pulley hub applies an abrasion prevention coating to reduce friction between the hub and oil seal.

Radial ribs segment the cavity to isolate thermal zones, minimizing shrinkage differences caused by fiber orientation and ensuring precise roundness.

Pivoting handle on lever hoist resolves left-right handed trade-off via spring-loaded joint.

A winch motor rotates a cable to raise and lower a lifting platform assembly using a biasing member that deflects the winch member.

Controlled carburization prevents proeutectoid cementite formation, resolving the trade-off between temper softening resistance and production efficiency.

Segmenting cables into a three-dimensional geometry reduces destabilizing moments and spin, simplifying crane operations.

A hoisting assembly uses an upper movable block to vary the equivalent spring coefficient of the rope system.

A securing strap integrates dual interfaces to maintain object tension without relying on a single ratcheting device.

Dynamic unwinding discs adjust position relative to the rope guide, preventing disengagement when the guide faces downwards.

Segmenting the load across multiple parallel cables reduces required line diameter, enabling 800-ton lifting capacity at depths exceeding 3500 meters.

Segmented drive wheel teeth tilt via clamping sleeves to distribute mechanical loads, compensating for chain pitch tolerances and reducing wear.

Integrated bayonet lock aligns gears axially, eliminating separate locking components while reducing assembly complexity.

Pre-toothing ring blanks before heat treatment enhances tooth base strength while maintaining precise gear geometry.

A plastic gear combines a high-strength inner core with a low-modulus surface layer to disperse load across tooth portions.

Thread pitch recesses on a slip clutch expand the heat exchange surface and circulate gearbox oil, resolving overheating without increasing installation size.

A low-profile trailer cart integrates a winch assembly to secure heavy cargo during transport.

Segmenting the trolley frame allows adaptation to varying rope drum lengths while avoiding bending torque loads that cause hoisting rope wear.

An adjustable pulley manifold simplifies aerial imaging by reducing device complexity while maintaining smooth camera movement.

Drum gear redirects processor energy to control heavy limbs, resolving productivity and operation trade-offs.

Directional roughness on elevator elements minimizes wear while enhancing lateral guidance to resolve manufacturing cost trade-offs.

Merging the auto tensioner and water pump into one assembly reduces package volume and shortens the power transmission belt.

A parabolic tooth trace gear mechanism utilizes pure rolling meshing to reduce frictional wear and improve motion stability.

A friction wheel drive adjusts contact pressing force via a transverse bearing unit to maintain slip control.

Tilting gearwheel teeth allows axial forging tools to form undercuts without complex radial sliding mechanisms, resolving production accuracy issues.

A tie-down device uses a speed-increasing gearbox to rotate a reel and wind straps, replacing heavy coil springs with lightweight mechanisms.

A mechanical tackle system moves drawer-type hoppers linearly from railcars using pulleys and chains.

A forestry winch uses a one-way clutch and manual lever to wind rope safely.

A gearing part uses a non-circular wheel body section to connect with a correspondingly shaped wheel rim for efficient torque transmission.

Spiral grooves on a transmission sleeve create axial spring force that eliminates backlash and reduces noise in helical gear systems.

Variable acceleration rate extends overvoltage application time, ensuring reliable brake release without reducing output frequency.

External strip cover reduces friction and wear on load cables while maintaining accident protection in block tackle systems.

A rigging block with a wider sheave channel and stacked bearings prevents lateral doubling of synthetic roundslings during off-center lifting.

Segmented plate elements reduce design complexity and manufacturing costs while enabling easy component replacement in chain drive systems.

Bent flat material spokes replace rolled profiles to resolve weldability issues and improve connection quality.

A portable pulley block uses a metallic reinforcing grid covered by a non-metallic liner to protect cables and reduce weight.

Segmenting the anchor point from the mobile capstan resolves the trade-off between portability and pulling capacity for heavy loads.

Logarithmic crowning curves maximize contact patterns to resolve limited torque transmission in hard gearing applications.

A self-aligning detent spring assembly uses a deformable cage to orient a roller perpendicular to detent teeth.

A self-locking electric actuator tensions a sail leech line without manual intervention.

Eccentric sheave freewheels one way to lock loads, eliminating manual cam pressure relief.

Segmented concave and convex portions on the shaft eliminate slits, boosting retaining strength without increasing machining complexity.

Integrated spring fingers eliminate separate stagger mechanisms, reducing complexity while preventing backlash.

An integrated lock mechanism retains the pulley trigger in an inactive state, eliminating the need for external karabiners and simplifying handling operations.

A tandem pulley uses a rotating clamp to secure the gate and sheaves in a compact housing.

Laser-fused friction lines on a supercharger pulley increase belt grip, eliminating slippage and noise from small diameter designs.

An adjustable hook block assembly positions sheaves via threaded rods to resolve low headroom constraints and maintain permissible wire rope tension.

A rotatable handle interface integrates direction and speed controls into a single user input mechanism for portable power driven systems.