Helicopter rotor swing wing 4pss+sp parallel multi-drive device

Abstract

The invention relates to a helicopter rotary oscillating wing 4PSS + SP type parallel multi-drive device, which comprises a parallel mechanism, a rotary oscillating wing mechanism and a spring. The parallel mechanism comprises a motor base, a motion table, a middle SP type passive confinement branch, and four PSS type drive branches, so that the axial movement of a rotary wing spindle and the three-dimensional rotation of the rotary wing spindle around a center ball pair of the motor base are realized; the rotary oscillating wing mechanism comprises a wing group, the spindle, a motor group, a big gear wheel, a pinion group, a hydraulic cylinder, a mandrel and a connecting rod group; the wing group is rotatably connected with the upper end of the spindle; the mandrel moves in a center hole of the spindle and is in key joint with the center hole of the spindle; the motor group fixed on the motion table multiply drive the spindle and the wing group to rotate through the big gear wheel and pinions; the hydraulic cylinder fixed on the motion table drives the mandrel to move along the spindle; the upper end of the mandrel drives the wing group to synchronously oscillate relative to the upper end of the spindle through the connecting rod group; and the spring is supported between the motor base and the motion table, so that the action force of the lifting force of the rotary wings on each drive branch is reduced. The helicopter rotary oscillating wing 4PSS + SP type parallel multi-drive device provided by the invention is good in multi-drive safety, simple and compact in structure, and good in stress, and the main rotary wing rotates and oscillates flexibly.

Description

Technical field [0001] The invention relates to the technical field of helicopters, in particular to a driving device for a helicopter rotary wing. Background technique [0002] The driving device of the helicopter rotor movement is the key component of the helicopter movement. Usually the rotor is composed of a hub and several blades. The propeller hub is mounted on the rotor shaft, and the blade shaped like a slender airfoil is connected to the propeller hub. When the blade rotates, it interacts with the surrounding air to generate a pulling force along the rotor axis. If the direction of the relative airflow or the pitch of each blade is asymmetric to the rotor axis, a component force perpendicular to the rotor axis is also generated. In a helicopter, the direction of the rotor axis is close to vertical, so the rotor first has the function of a wing and generates upward force. Secondly, it also has a function similar to the aircraft propulsion device, generating forward for...

AI Technical Summary

Problems solved by technology

[0003] 1. A single engine drives the rotor to rotate. Once the engine fails, it will inevitably lead to serious accidents

[0004] 2. The lifting force of the high-speed rotary rotor is borne by the large ball bearing. Because the large ball bearing has a low load-bearing tensile capacity, it is not suitable for high-speed rotation, so the service life is low

[0005] 3. The existing rotor motion drive device is very complicated

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