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

• Main Authors: WENG ZEYU, TAO YONGSHUO, ZHU FUHONG, LIU SHENGLI, WANG YONG, XU TEQI, WU XIAOYU, SHI KAIDI
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2020
• 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

A semi-active control vibration isolation system for longitudinal vibration of a propulsion shafting comprises the shafting, a thrust disc and a foundation, the rear end of the shafting is connected with a propeller, the front end of the shafting is connected with a unit through a flexible coupling, the shafting is connected with a propulsion flange, the front end of the propulsion flange is connected with a thrust bearing, and 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 further arranged between the thrust disc and the foundation, and each controllable damper is paired with the corresponding low-rigidity element to form a group. Avibration 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 with an industrial personal computer,