The Influence of Operating Factors on the Ram-type Steering Gear Elements Force Interaction

Abstract

Article deals with am-type ship steering gears load capacity, rigidity and parts force interaction. It is shown that mechanism of perception and transmission of lateral force by the parts of a ram-type steering gear can contain three stages depending on gaps between elements. Presented mathematical model of load distribution considers the size of the gaps between the ram and the sleeve, as well as the ram and the guide beam. At the example of R-18 steering gear using the developed model it is shown that the guide beam works inefficiently. In case of minimal gaps in linkings, the guide beam can take 74% of the lateral load, and when the gaps are increased to the maximum allowable values in operation, the guide beam will take only 56% of the lateral load overloading the ram which leads the intensity of wear on their sleeves and system oil leakage increases, which leads to an increased fire hazard in the tiller room.