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Propeller variable-pitch connecting rod mechanism

A connecting rod mechanism and propeller technology, which is applied to propellers, aircraft parts, transportation and packaging, etc., can solve problems such as motion jamming, short service life, poor performance of angle changes, etc.

Pending Publication Date: 2021-03-02
AVIC HUIYANG AVIATION PROPELLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piston and the internal guide rail of the propeller hub are splined to prevent circumferential rotation. The existing connecting rod mechanism has poor performance in adapting to the angle change caused by the manufacturing tolerance of the piston circumferential direction. Part interference and motion jamming frequently occur, resulting in the failure of the connecting rod mechanism. Severe wear and short service life, and once the link mechanism is severely worn and cannot be used, the link mechanism needs to be replaced as a whole, resulting in high cost of use of the link mechanism

Method used

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  • Propeller variable-pitch connecting rod mechanism
  • Propeller variable-pitch connecting rod mechanism
  • Propeller variable-pitch connecting rod mechanism

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] Such as Figure 1 to Figure 6 As shown, this embodiment includes a connecting rod 1 and a spherical slider 6 . The small end 51 of the connecting rod 1 is hingedly connected to the end of the piston 3 , and its large end 52 is hingedly connected to the blade eccentric pin 2 . Preferably, the small end 51 of the connecting rod 1 is flat, with a through hole 53 in the middle, which is installed in the groove of the piston 3, and passes through the piston 3 and the through hole 53 at the small end of the connecting rod through the positioning pin 7, so that it is aligned with the piston. 3 connected together. Preferably, the big end 52 of the connecting rod 1 is flat, and there is a spherical inner hole 54 in the middle, and the spherical slider 6 used in conjunction with the spherical inner hole 54 is rotatably installed in the spherical...

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Abstract

The invention discloses a propeller variable-pitch connecting rod mechanism which comprises a connecting rod and a spherical sliding block. The small end of the connecting rod is hinged to the tail end of the piston, and the large end is hinged to the paddle eccentric pin; a piston is slidably connected to the guide rail through a spline; and a paddle eccentric pin is eccentrically fixed on the end surface of the paddle. The angle change performance brought by manufacturing tolerance in the circumferential direction of the piston is high, part interference, movement clamping stagnation and abrasion slowing are prevented, the service life is prolonged, and the use cost is reduced.

Description

technical field [0001] The invention relates to a propeller pitch variable link mechanism. Background technique [0002] The variable pitch propeller needs the blade to change the angle, the rotation of the blade angle is circular motion, and the driving force is the linear motion of the piston, so there needs to be a connecting rod between the linear motion of the piston and the circular motion of the blade to form a crank linkage mechanism. The piston and the internal guide rail of the propeller hub are splined to prevent circumferential rotation. The existing connecting rod mechanism has poor performance in adapting to the angle change caused by the manufacturing tolerance of the piston circumferential direction. Parts interference and motion jamming frequently occur, resulting in the failure of the connecting rod mechanism. The wear is serious, the service life is short, and once the wear and tear of the connecting rod mechanism is serious and cannot be used, the connect...

Claims

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Application Information

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IPC IPC(8): B64C11/32B64C11/36
CPCB64C11/32B64C11/36
Inventor 汤斯佳蔡猛王慧玲王金利李桃李媛媛
Owner AVIC HUIYANG AVIATION PROPELLER
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