Способ повышения надежности дейдвудных подшипников валопроводов судов

Abstract

The paper gives the analysis of the ship power plant its elements: a shaft line and deadwood bearings. The deadwood bearings are said to serve as supports for the ship shaft line. The operating conditions, the effect of loads and the occurrence of possible defects that reduce the life of deadwood bearings and the shaft line are described. The actual operation life of ships without repair depends on the technical condition of the deadwood unit and on the size of clearance between the propeller shaft and deadwood bearings which increases because of wear of the bearings. Structural and technological ways of increasing the reliability of deadwood bearings are described. It is stated that the resource loss of deadwood bearings is caused by the irreversible physical processes occurring on the surface and inside the bearings at the structural level under continuous cyclic stresses, which results in the extreme condition and wear unacceptable for further operation. There are considered the methods of improving the structures of the deadwood unit, as well as new solutions for the design or repair of ship deadwood bearings. There is proposed a new design of a deadwood bearing based on the requirements and rules of regulatory documents. A sketch and a picture of the proposed deadwood bearing are presented, which is a metal housing with segments made of two materials: ZX-100K (Zedex) and rubber. The proposed design of the deadwood bearing will increase the reliability of the ship deadwood device, eliminate non-working sections of segments and increase the support area of the propeller shaft on the bushings. It has been inferred that there is a possibility to reduce the contact static and dynamic specific loads and amortize the shock loads.