Semi-active control vibration isolation system for longitudinal vibration of propulsion shaft system

• Main Authors: WENG ZEYU, TAO YONGSHUO, ZHU FUHONG, LIU SHENGLI, WANG YONG, XU TEQI, WU XIAOYU, SHI KAIDI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MARINE PROPULSION OR STEERING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The invention discloses a semi-active control vibration isolation system for a longitudinal vibration of a propulsion shaft system. The system comprises a shaft system, a thrust disc and a foundation;the rear end of the shaft system is connected with a propeller; the front end of the shaft system is connected with a unit through a flexible coupling; the shaft system is connected with a propellingflange; the front end of the propelling flange is connected with a thrust bearing; the front end of the thrust bearing is connected with the thrust disc; a plurality of low-rigidity elements are arranged between the thrust disc and the foundation; a plurality of controllable dampers are arranged between the thrust disc and the foundation; each controllable damper and the corresponding low-rigidity element are paired into a group; a vibration sensor is arranged on the thrust disc; the output end of the vibration sensor is connected with a data acquisition card; the output end of the data acquisition card is connected w