Front-located two-way lockup valve device used for stabilizing pitch of marine controllable pitch propeller and method for front-located two-way lockup valve device

Abstract

The invention discloses a front-located two-way lockup valve device used for stabilizing a pitch of a marine controllable pitch propeller and a method for the front-located two-way lockup valve device. A first hydraulic control check valve and a second hydraulic control check valve are axially arranged in a valve seat from the end face of the valve seat; the valve seat is connected with a connecting plate; an oil distribution stub column penetrates through an inner bore of an oil distribution seal sleeve and is connected with the connecting plate; a front dual oil pipe is connected with the oil distribution stub column; a front chamber and a rear chamber are formed in the oil distribution seal sleeve; the front chamber of the oil distribution seal sleeve communicates with an oil inlet of the first hydraulic control check valve through a front oil inlet / outlet, and communicates with a control oil port of the second hydraulic control check valve; an oil outlet of the first hydraulic control check valve communicates with a rod chamber of an oil cylinder; the rear chamber of the oil distribution seal sleeve communicates with an oil inlet of the second hydraulic control check valve through a rear oil inlet / outlet, and communicates with a control oil port of the first hydraulic control check valve; an oil outlet of the second hydraulic control check valve communicates with a non-rod chamber of the oil cylinder. The defects that shaft system strength is influenced, space is occupied, the device is complicated, maintenance cost is high, and the like by installing a pitch stabilizing device in the prior art are eliminated.

Description

technical field [0001] The invention relates to a pitch control device for ships, in particular to a front-mounted two-way lock valve device and method for pitch control of ships. Background technique [0002] In order to ensure the stability of the ship's navigation, the controllable pitch propeller of the ship needs a pitch stabilizing device to fix the pitch of the blade at a certain value during the navigation process. There are two installation forms of the existing pitch stabilizer: the first one is installed on the shaft, which needs to mill out an installation plane on the shaft, which weakens the strength of the shaft; the second one is installed in the hub of the controllable pitch propeller In this form, once the distance stabilization device fails, it needs to be repaired in the dock, and the maintenance cost is relatively high. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and to prov...

AI Technical Summary

Problems solved by technology

There are two installation forms of the existing pitch stabilizer: the first one is installed on the shaft, which needs to mill out an installation plane on the shaft, which weakens the strength of the shaft; the second one is installed in the hub of the controllable pitch propeller , once the distance stabilization device fails in this form, it needs to be repaired in the dock, and the maintenance cost is relatively high

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