Rigidity-adjustable water lubricating stem bearing

Abstract

The invention discloses a rigidity-adjustable water lubricating stem bearing. The stem bearing comprises a bearing sleeve, bearing supports and rigidity-adjustable bearing bushes. Each rigidity-adjustable bearing bush is of a flexible structure with an airtight cavity. The rigidity-adjustable bearing bushes are fixedly connected in the bearing sleeve through the bearing supports. The rigidity-adjustable bearing bushes are distributed in the circumferential direction of the bearing sleeve. The surfaces of the rigidity-adjustable bearing bushes are higher than the inner diameter surface of the bearing sleeve. A flow partition water groove is formed between every two adjacent rigidity-adjustable bearing bushes. The rigidity-adjustable bearing bushes can be used for adjusting the rigidity of the bearing in the manner that high-pressure gas is changed in and discharged from the airtight cavities of the rigidity-adjustable bearing bushes. By means of the rigidity-adjustable water lubricating stem bearing, the problems that the maintenance period is long and the maintenance workloads are large when an existing water lubricating stem bearing is replaced or maintained, and the rigidity of the water lubricating bearing cannot be adjusted to adapt to vibration of a stem shaft system can be solved.

Description

technical field [0001] The invention belongs to the technical field of marine bearing structures, and in particular relates to a water-lubricated stern bearing, which is used for supporting large-diameter shafting systems such as ship propulsion shafting and rudder shafting on outboard parts. Background technique [0002] At present, water-lubricated stern bearings are commonly used in my country, including bearing bushes and bearing bushes. The bearing bushes are cylindrical, the outer circle of the bearing bush is the mounting surface, and the inner circle is used to support the bearing bush. The bearing bush mainly has two structural forms: shaft In the case of a small shaft diameter ≤ Φ250mm, the integral bearing pad is generally used, and the bearing pad material is directly vulcanized on the inner circle of the bearing bush. In the case of large shaft diameters with a shaft diameter > Φ250mm, slatted bearings are generally used. The above two forms of water-lubricate...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a water-lubricated stern bearing with adjustable stiffness, which can solve the problem that the existing water-lubricated stern bearing has a large maintenance cycle and maintenance workload during replacement or maintenance, and cannot adjust the stiffness of the water-lubricated bearing to adapt to the stern. The problem of shaft vibration

Images