Single-rotor unmanned helicopter tail transmission shaft supporting mechanism

Abstract

The invention discloses a single-rotor unmanned helicopter tail transmission shaft supporting mechanism which comprises a supporting mechanism body, the supporting mechanism body is composed of a shaft sleeve, a self-lubricating bearing, a shock absorption pad, a fixing base and a plurality of connecting parts, the shaft sleeve is fixed to a transmission shaft, and the shaft sleeve is used for connecting the self-lubricating bearing and the transmission shaft. The self-lubricating bearing is directly installed on the shaft sleeve, the shock absorption pad is arranged on an outer ring of the self-lubricating bearing in a sleeving mode, the fixing base is arranged at the top end of the supporting mechanism body, a baffle is installed on the right side of the shock absorption pad, and a checkring is arranged on the upper right side of the baffle. According to the single-rotor unmanned helicopter tail transmission shaft supporting mechanism, the self-lubricating bearing is selected and used, the service life is long, the shock absorption pad is added, the vibration frequency of a tail pipe is reduced, so that the overall vibration frequency of a helicopter is reduced, the adaptabilityof the helicopter and flight control equipment is improved, the overall reliability of the helicopter is improved, a shock absorption mechanism is easy to assemble and has few parts, and the mechanism mass is reduced.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a tail drive shaft support mechanism of a single-rotor unmanned helicopter. Background technique [0002] The main features of the mechanism of the single-rotor unmanned helicopter: the single-rotor helicopter engine drives the main rotor to provide lift for the aircraft to lift the helicopter in the air, and the single-rotor helicopter engine also delivers power to the small propeller at the tail. [0003] Common transmission methods for the tail drive of single-rotor drones include belt drive and drive shaft drive. The drive support mechanisms for most shaft drives use needle bearings. At the same time, the entire support mechanism is hard-connected to the tail pipe and drive shaft. This method Has the following flaws: [0004] Although the needle roller bearing is light in weight and easy to install, it cannot be lubricated, which will directly lead to the li...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a support mechanism for the tail drive shaft of a single-rotor unmanned helicopter, which solves the problem that although the prior art selects a needle roller bearing that is light in weight and easy to install, the bearing cannot be lubricated, which will cause It directly leads to the life of the bearing, and the support mechanism is not damped, resulting in a large vibration of the tail drive and affecting the overall stability of the aircraft.

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