Adjustable pitch propeller hub with rear-mounted oil cylinder

Abstract

A adjustable pitch propeller hub with a rear-mounted oil cylinder mainly comprises a propeller hub body, a blade seat, a guide frame, a piston, a rear cover plate, a propeller shaft with a single oilpipe, a flange bolt, an internal oil pipe, a slide block, a flange pin and bolts; the piston is positioned at the rear end of the propeller hub body; the propeller hub body and a rear end oil cylinderare integrated; the propeller hub body is connected with the propeller shaft through the flange bolt; the piston is mounted at the end part of the guide frame in the propeller hub through the bolts;the rear end of the piston forms a rear oil chamber together with the internal wall of the propeller hub body and the rear cover plate; the front end of the piston forms a front oil chamber together with the internal wall of the propeller hub body; the front end of the propeller hub body and the propeller shaft flange form a lubricating oil chamber; the rear cover plate is connected with the propeller hub body through the bolt; the guide frame is supported on a middle partition plate of the propeller hub body and the propeller shaft; a crank pin is arranged at the root of a circular disc of the blade seat; the slide block sleeves the crank pin and is mounted into a slide groove in the middle part of the guide frame; and the slide block is movably connected with the crank pin and the slidegroove. The adjustable pitch propeller hub with the rear-mounted oil cylinder has the characteristics of reasonable structure, convenient and reliable use, very low working oil pressure, same ahead and astern compression areas, high system operation stability, convenient maintenance and so on.

Description

technical field [0001] The invention relates to a rear-mounted oil cylinder adjustable propeller hub, especially a rear-mounted oil cylinder propeller hub for ship propulsion, side thrust, and full rotation, belonging to a ship propeller that can Controlled pitch propeller technical field. Background technique [0002] The propeller hub is one of the core components of the controllable pitch propeller device. It is not only the bearing part of the propulsion power, but also the final actuator of the pitch control. Therefore, the reliability of the propeller hub is very important. [0003] In the existing adjustable propeller hub, the separate oil cylinder body is connected to the rear end of the propeller hub body with bolts through the oil cylinder body flange, so that the piston area of ​​the oil cylinder is relatively small, and the working oil pressure is relatively high; the replacement of the oil cylinder seal is inconvenient. Contents of the invention [0004] The ...

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Problems solved by technology

[0003] In the existing adjustable propeller hub, the separate oil cylinder body is connected to the rear end of the propeller hub body with bolts through the oil cylinder body flange, so that the piston area of ​​the oil cylinder is relatively small, and the working oil pressure is relatively high; the oil cylinder seal is inconvenient to replace

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