Controllable pitch propeller for ship

A marine propeller and pitch technology, applied in ship construction, ship propulsion, ship parts, etc., can solve the problems of high price, complex and expensive system, difficult application of transport ships, etc., and achieve the effect of simple structure and low cost

Inactive Publication Date: 2011-05-11
GUANGZHOU SHIPYARD INTERNATIONAL LTD
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clearly, the systems required to control hydraulic pitch props are complex and expensive
Due to its high price, it is currently only used on luxury cruise ships

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Controllable pitch propeller for ship
  • Controllable pitch propeller for ship
  • Controllable pitch propeller for ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The elastic blade root variable-pitch marine propeller includes a propeller hub 2 and a plurality of propeller blades 1. Bolts 3 are used to fix the connector 4 at the lower end of each propeller blade 1. The connector 4 is inserted into the mounting hole of the propeller hub 2 to be rotatable. The propeller hub 2 The fastening ring 7 is fixed at the bottom of the mounting hole, and there is a gap between the fastening ring 7 and the connecting piece 4. The two ends of the elastic blade root 6 are respectively inserted into the connecting piece 4 and the fastening ring 7 and fixedly connected. The material of the elastic blade root 6 can use PP-medium melting fat engineering plastic model SP179, or use natural rubber model SCR5, or synthetic rubber BR9000 butadiene rubber. When the torque on the propeller 1 increases or decreases, the elastic blade root 6 can be twisted and deformed or restored to its original shape, so that the propeller 1 can rotate around the blade sh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A controllable pitch propeller for a ship is provided with an elastic blade root and comprises a propeller hub and a plurality of blades, wherein a connecting piece fixed at the lower end of each blade is inserted into a mounting hole of the propeller hub can be rotated, a securing ring is fixed at the bottom of the mounting hole of the propeller hub, a clearance is reserved between the securing ring and the connecting piece, and two ends of the elastic blade root are respectively inserted into the connecting piece and the securing ring and fixedly connected with the connecting piece and the securing ring. When the power of a main engine is increased or the flow coming speed of the propeller is reduced, the load of the propeller is increased, the pushing force is also increased, the blades are finely adjusted to rotate, the elastic blade root is twisted and deformed, and a pitch angle is changed, and a pitch is reduced. Therefore, the load is reduced. When the load of the propeller is reduced, the elastic blade root enables the pitch angle to recover according to the elastic force. The propeller can adjust the pitch to adapt to the working conditions of the ship, and can enable the blades to carry out adaptive adjustments according to different flow speeds under different angles of rotation, and the load is enabled to be more uniform during a circle of movement.

Description

technical field [0001] The invention relates to a marine propeller, especially a variable-pitch marine propeller. Background technique [0002] The pitch in the present invention refers to the surface pitch of the propeller: the paddle surface of the propeller is the rotating surface. The intersection line between any cylindrical surface coaxial with the propeller and the blade surface is a section of the helix line, and the cylindrical surface intercepts the blade to obtain the tangent surface of the blade, that is, the tangent surface of the blade is on the helical line where the cylindrical surface and the blade surface intersect , the axial distance between the two ends of the blade is equal to the pitch of the helix. (See pages 10-11 of the 1985 edition of Ship Propulsion). [0003] There are great changes in the operating conditions of the ship, for example, the full load condition or the ballast condition represent the maximum carrying capacity or the lightest carry...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B63H3/00
Inventor 何光伟
Owner GUANGZHOU SHIPYARD INTERNATIONAL LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap