Mechanical Machines/Dredgers TRIZ Cases

A correction mechanism links left and right hydraulic travel lines to balance actuator force and improve straight travel during intermediate control input.

Machine-state sensing keeps the blade out of float during jacking while still enabling float-based leveling on uneven ground.

Two independent hydraulic circuits enable pressureless Power-Beyond coupling at standby pressure while steering and leveling continue without engine shutdown.

Weighted boom velocity limits blend operator input and target-surface distance to avoid shocks during excavator compaction work.

Mode-specific valve control reshapes hydraulic actuator acceleration and deceleration, improving shovel responsiveness for fast or precise work.

A single switching valve links actuator chambers and an accumulator to enable floating and anti-vibration modes with less leakage.

A one-piece extruded or cast crossbar removes weld voids and keeps parallel coupling surfaces for stronger, lower-vibration implement connections.

A controller switches bucket valve flow restriction by lever-change frequency to preserve fuel efficiency without losing hydraulic response.

A diverter valve and pressure-compensated flow path let compact track loader blades tilt and angle together with lower parasitic load.

Closed-loop boom speed correction uses posture and cylinder thrust to keep bucket pressing force accurate on the target construction surface.

Integrated control valves recover boom return-oil through an accumulator and assist motor while adding floating function without extra valve complexity.

Directional supply and discharge flow control keeps excavator boom speed accurate under varying loads, improving bucket path and surface precision.

A non-coaxial rotary actuator uses separate urea and cable passages to save space, reduce leakage risk, and simplify harvester head maintenance.

Coordinated control of multiple arm joints keeps the tool in lifting position through upward paths while improving load stability and energy recovery.

A controller opens a third valve to reroute swing-pump oil to the boom during combined motion, cutting relief loss and oil discard.

When slip occurs during excavation, the controller raises the design surface so the blade tip regains ground contact faster and avoids repeated slip.

Operator-triggered target surface control uses vehicle position and orientation to manage blade load and improve digging and filling finish.

Detachable 4-way blade inserts and a laterally adjustable guide blade cut jamming and simplify wear-part replacement in heavy-duty shears.

A spring-driven sliding safety plate secures the quick coupler attachment pin without hydraulic cylinders or hoses, reducing failure risk.

A discharge valve bypass lets a hydraulic cylinder maintain precise fine pulling speed under contraction load despite pump leakage at low tilt.

A rotatable piercing tip lets demolition shears switch worn edges after 180° indexing while enclosing the jaw nose for added protection.

Separate return paths and unequal throttles stabilize pressure and improve operation feel when hydraulic actuators run simultaneously.

Pump flow ramping is adjusted by both swing inertia and operator input to avoid excess angular acceleration while reducing hydraulic energy loss.

At low engine speed, a center bypass valve is tightened below combined spool area to keep lever range wide and actuator flow variable.

Keeping pump discharge pressure below a set level at engine start keeps the bleed-off valve open and lets the starter motor turn reliably.

Excavation-load feedback adjusts hydraulic speed-up valve opening to keep boom-arm motion balanced, reduce locus deviation, and avoid relief loss.

Pressure-based pump displacement switching reduces excess hydraulic pressure during simultaneous boom raising and arm crowding in leveling.

Perception-guided control shifts a material mover to an alternate spot when obstacles or topography block the planned path.

Rod and bottom pressure feedback corrects boom cylinder motion to prevent excavator rear lift and maintain stable digging.

A stepped boss and coupling member reduce bending stress at side-plate welds, extending work arm fatigue life while limiting weight.

A single forged center pintle hub replaces multi-piece weldments to improve load strength, durability, and welding access in heavy machines.

A controller opens a third valve to divert swing pump oil to the boom cylinder before steady swing, cutting relief loss and oil discard.

A hinged lock with interlocking bodies and a frusta-conical insert secures wear members, resists ejection, and simplifies replacement.

A raised support tube locks and lifts front attachments in one motion, reducing precise repositioning, manual steps, and connection errors.

Pressure-based meter-in and meter-out valve control keeps branch flows accurate across multiple hydraulic actuators despite load variation.

An electronic controller turns joystick input into repeatable carriage oscillation, giving hydraulic attachments precise shake frequency and amplitude.

Gradual pressure ramping in a work machine hydraulic valve smooths travel speed shifts while reducing abrupt motion and component wear.

Adjusting turning valve opening by operation mode preserves boom raising during combined motion while cutting single-operation pressure loss.

Boom cylinder pressure and motion are corrected to limit rear-body lift in shovel digging, improving stability and work efficiency.

A flow-controlled hydraulic accumulator buffers peak actuator demand, helping demolition robots run from low-power outlets without heavy batteries.

A selector valve bypasses solenoid pressure reduction in the pilot line to preserve excavator actuator response during rapid implement control.

Excavated topography feedback shifts the target profile upward to keep work implements on grade despite soil hardness and machine limits.

Predicted center-of-gravity control slows excavator actuators before sudden stops to limit tilt, floating, and ride-quality loss.

A variable displacement pump and bypass circuit combine valve and bypass flow to support high-flow implements with better hydraulic efficiency.

Pump flow ramping is adjusted by swing inertia and operator input to curb excess acceleration, reduce relief loss, and keep swing control responsive.

A fuel-efficiency map compares RPM reduction with torque-curve switching to choose the best engine control when auxiliary power is used.

Adjustable pilot and load-sense valve pressures cut hydraulic pressure drop, reducing pump energy use and fuel loss in work vehicles.

Variable regeneration flow limits arm cylinder speed fluctuation during area limiting control, keeping bucket excavation on target.

Position-based control keeps a ground engaging implement above the surface between tasks, then lowers it before the start point to cut cycle time.

Piston position sensing lets a hydraulic boom stop a hammer or drill at the desired angle, reducing wear while preserving operator control.