Unlock instant, AI-driven research and patent intelligence for your innovation.

A connection device between a blade and a hub with a metal handle

A connecting device and paddle handle technology, which is applied to propellers, transportation and packaging, aircraft parts, etc., can solve problems such as surface damage, no protection measures for paddle handles, safety accidents, etc., to ensure sealing and rotation accuracy, improve strength and The effect of using accuracy and improving maintenance efficiency

Active Publication Date: 2022-04-22
CHINA ACAD OF AEROSPACE AERODYNAMICS
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Propellers are an important part of low- and medium-speed aviation vehicles. At present, the handles and blades of most propellers on the market are made of carbon fiber composite materials. The propeller hub will repeatedly squeeze the propeller handle to cause surface damage, which will affect the rotation accuracy and service life, and more seriously will lead to safety accidents
In addition, the propeller blades are often damaged due to external sandstone or hot and humid environment during use. During the replacement process, it is often necessary to replace the entire propeller hub including the pitch change mechanism, and re-calibrate and adjust the pitch angle of the propeller blades. , propeller maintenance efficiency is poor

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
  • A connection device between a blade and a hub with a metal handle
  • A connection device between a blade and a hub with a metal handle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] A connection device between a blade with a metal handle and a hub, including a hub 1, a root shaft 2, a blade with a metal handle 3, a stud pin 4, a rotatable end surface support, a spacer 8, Locking piece 9, trim block 10;

[0026] The root shaft 2 is fixedly connected with the blade 3 with the metal handle; the root shaft 2 is fitted in the hub 1; the rotatable end support is located between the hub 1 and the root shaft 2, so that the root shaft 2 and the blade 3 with the metal handle is rotatable relative to the hub 1, and the position between the hub 1 and the root shaft 2 is relatively fixed through the rotatable end surface support member, spacer 8 and locking member 9, wherein The spacer 8 is located between the locking ...

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 connection device between a blade with a metal handle and a hub, the root shaft (2) and the blade (3) with a metal handle are fixed by a stud pin (4), and they pass through a rotatable end surface support together It is fitted and positioned with the propeller hub (1), and rotates relative to the propeller hub (1). Under the axial tension of the spacer (8) and the locking piece (9), the propeller root shaft (2), belt The axial positions of the blade (3), the rotatable end surface support and the hub (1) of the metal rotor handle are fixed, and the built-in sealing ring (7) seals the inner cavity of the hub (1). The centrifugal trim of 10) can reduce the effect of the centrifugal moment on the blade (3) due to the deviation of the center of gravity from the rotation axis of the blade (3), and finally satisfy the requirement that the blade (3) with a metal handle can be inserted into the hub (1) Install and fix.

Description

technical field [0001] The invention belongs to the technical field of aviation equipment and relates to a connection device between a blade with a metal blade handle and a blade hub. Background technique [0002] Propellers are an important part of low- and medium-speed aviation vehicles. At present, the handles and blades of most propellers on the market are made of carbon fiber composite materials. The propeller hub will repeatedly squeeze the propeller handle to cause surface damage, which will affect the rotation accuracy and service life, and even lead to safety accidents. In addition, the propeller blades are often damaged due to external sandstone or hot and humid environment during use. During the replacement process, it is often necessary to replace the entire propeller hub including the pitch change mechanism, and re-calibrate and adjust the pitch angle of the propeller blades. , Propeller maintenance efficiency is poor. Contents of the invention [0003] The ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B64C11/20B64C11/02
CPCB64C11/20B64C11/02
Inventor 李广良陈强康国剑张江董金刚秦永明赵波
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS