Figure 17
From: Present Status and Prospect of High-Frequency Electro-hydraulic Vibration Control Technology
New type of electro-hydraulic vibration equipment with single shoulder spool: a left motion state of the hydraulic cylinder; b right motion state of the hydraulic cylinder. 1. Piston rod; 2. Housing; 3. Piston; 4. Coupling; 5. Step motor; 6. Baffle; 7. First valve sleeve window; 8. Second valve sleeve window; 9. Shoulder; 10. Valve sleeve; 11. Single shoulder spool; 12. Bearing; 13. First groove; 14. Second groove; A: Local structure; P: Oil supply port; T: Oil return port