Connecting and supporting combined device for inner oil pipe in adjustable propeller

Abstract

The invention discloses a connecting and supporting combined device for an inner oil pipe in an adjustable propeller. The device is mainly formed by casing the inner oil pipe in an outer oil pipe, wherein the inner oil pipe at least consists of a left oil pipe and a right oil pipe which are connected with each other through an inner pipe connecting sleeve; an inner pipe support in which hydraulic oil can pass through is sleeved on the left oil pipe or the right oil pipe between the inner oil pipe and the outer oil pipe; one side of the inner pipe connecting sleeve is connected with the left oil pipe or the right oil pipe through internal threads and is radially fixed through a fastening screw, and the other side of the inner pipe connecting sleeve is sleeved on the right oil pipe or the left oil pipe and is connected through welding; one side of the inner pipe connecting sleeve is connected with the left oil pipe or the right oil pipe through the internal thread, and a seal ring is arranged at the connecting junction; and the inner pipe support which is sleeved on the left oil pipe and the right oil pipe is made of a cast copper piece, a cross section of the inner pipe support is of flower type, the middle part of the inner pipe support is used for supporting the inner oil pipe, and the two end walls are made to be thin and are fixed on the outer wall of the inner oil pipe through clamping deformation. The device has the characteristics of simple structure, convenience in use and mounting, high reliability for connection, long service life and the like.

Description

technical field [0001] The invention relates to a connection and support combination device for connecting and supporting the inner oil pipe in the propeller hub of a marine propeller. Background technique [0002] In marine propellers, the propeller shaft extends from the engine room to the outside of the hull, so the oil pipe inside the propeller shaft needs to be very long. In order to facilitate processing and installation, the oil pipes are combined in sections, so the inner pipe connecting sleeve and inner pipe support are necessary. Less. The existing inner pipe connection sleeves are used to connect and support at the same time, and the cast copper parts are used. The rigidity of this material is very low, so the length of a single inner oil pipe is limited; the inner oil pipe is fixed on the propeller hub through the flange On the piston, when the inner oil pipe moves with the piston, the oil pipe connection sleeve must bear tension or reasoning; at the sam...

AI Technical Summary

Problems solved by technology

The existing inner pipe connection sleeves are used to connect and support at the same time, and the cast copper parts are used. The rigidity of this material is very low, so the length of a single inner oil pipe is limited; the inner oil pipe is fixed on the propeller hub through the flange On the piston, when the inner oil pipe moves with the piston, the oil pipe connection sleeve must bear tension or reasoning; at the same time, it is used as a support, and the inner pipe connection sleeve will wear when moving relative to the outer oil pipe, which makes it easier to damage the oil pipe connection sleeve. If the oil pipe bursts, the propeller will lose its working ability, which will cause great loss and damage to the safety of the ship and crew; its maintenance will require a lot of time and money, so it is very important to ensure the safe operation of the propeller hub oil pipe system

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