Figure 24
From: Present Status and Prospect of High-Frequency Electro-hydraulic Vibration Control Technology
New method of twin-valve independently controlled high-frequency electro-hydraulic vibration. 1. Vibration hydraulic cylinder; 2. Linear motor; 3. Valve body; 4. Spool; 5. Large gear 1; 6. Large gear 2; 7. Small gear; 8. Servo motor; 9. Pilot electromagnetic relief valve; 10. One-way valve; 11. Constant pressure proportional variable pump; 12. Filter; 13. Pilot proportional relief valve