Helicopter main rotor wing flexible parallel connection driving device

Abstract

A helicopter main rotor wing flexible parallel connection driving device comprises a machine base, a movable table, three PSS driving branches, a ball sleeve, a shaft sleeve, a mandrel, four rotor wings, a spring, a planet gear speed increasing gear, six steel ropes, a flange plate and main and auxiliary drivers; one end of each PSS driving branch is connected with a movement pair of the machine base, and the other end of each PSS driving branch is connected with a ball pair of the movable table; the ball sleeve is connected with a ball pair of the machine base; the upper end of the shaft sleeve is rotationally connected with the rotor wings, the middle portion of the shaft sleeve is rotationally connected with the ball sleeve, the lower portion of the shaft sleeve is rotationally connected with the movable table, and the lower end of the shaft sleeve is connected with an output shaft of the planet gear speed increasing gear; a gear shaft at the upper end of the mandrel is in gear engagement with the rotor wings, the lower end of the mandrel is fixedly connected with four pin keys; the pin keys penetrate a key hole of the shaft sleeve to be fixedly connected with a bearing ring which is rotationally connected with a gear sleeve; and the gear sleeve is in threaded connection with the movable table. Helicopter main rotor wings of the helicopter main rotor wing flexible parallel connection driving device rotate and swing flexibly, the helicopter main rotor wing flexible parallel connection driving device is compact in structure and good in sealing performance, and a driver is in flexible transmission.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a parallel drive device for helicopter main rotors. Background technique [0002] Helicopter rotor motion drive device is the key component of helicopter motion. Usually the rotor consists of a hub and several blades. The hub is mounted on the rotor shaft, and the blades, which are shaped like slender wings, are attached to the hub. In order to meet the requirements of various forces during the rotor motion of the helicopter, the ball bearings supporting the main shaft of the rotor bear various loads, which may easily lead to premature damage and failure of the ball bearings. These issues have aroused great concern among helicopter designers. In recent years, the patent with the publication number [CN101961559B] discloses a rotor support device for a model airplane helicopter, which uses a V-shaped bracket to absorb the vibration produced by the helicopter, in order to red...

AI Technical Summary

Problems solved by technology

[0003] 1. The existing helicopter rotor motion drive device is very complicated, and some drive mechanisms, power supply lines, and oil supply pipes are located outside the cabin

[0004] 2. The ball bearing supporting the rotor shaft is only suitable for low speed, and the ball pair has poor load bearing capacity

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