Reciprocating Drilling Machines TRIZ Cases
- Hydraulic Impact Device Warm-Up With Accumulator Pressure Limiting
Pre-heated hydraulic fluid is pressure-limited during warm-up to protect accumulator membranes and seals in low-temperature rock drilling.
- Resonant Piston Vibration Control for Construction Machines
Electronic valve control tunes piston motion to fluid-system resonance, enabling adjustable percussion frequency and energy without duct rework.
- Percussion Piston Valve Housing for Faster Stroke Adjustment
A common valve housing shortens hydraulic paths for quicker stroke adjustment while reducing leaks and mechanical damage in percussion drills.