Small-sized single-rotor unmanned helicopter speed change system

An unmanned helicopter and single-rotor technology, applied in the field of transmission system, can solve the problems of low transmission efficiency, complex structure and high noise of the transmission system, and achieve the effects of ensuring safety and reliability, reducing interference and reducing energy loss.

Pending Publication Date: 2016-02-24
衡阳云雁航空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of low transmission efficiency, high noise, large vibration and complex structure of the transmission system of the existing small single-rotor unmanned helicopter with tail rotor

Method used

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  • Small-sized single-rotor unmanned helicopter speed change system
  • Small-sized single-rotor unmanned helicopter speed change system
  • Small-sized single-rotor unmanned helicopter speed change system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1~3 Shown: small single-rotor unmanned helicopter transmission system, including engine 1, gearbox and tail shifter box 3 (installed on the frame of unmanned helicopter), primary transmission mechanism, tail rotor mechanism, propeller mechanism and tensioning wheel mechanism.

[0025] The gearbox (installed on the frame of the unmanned helicopter) includes a box base 21 and a box loam cake 22, and the box loam cake 22 is sealed and installed on the box base 21 and forms an inner chamber 23 with the box base 21.

[0026] The primary transmission mechanism includes front synchronous wheel 41, rear synchronous wheel 42, primary shaft 43, one-way bearing 44, input gear 45 and tail front wheel 46.

[0027] The front synchronous wheel 41 is associated with the engine crankshaft 11 through the clutch mechanism, the front synchronous wheel 41 drives the rear synchronous wheel 42 to rotate through the belt 47, the rear synchronous wheel 42 is sleeved on the one-...

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Abstract

The invention provides a small-sized single-rotor unmanned helicopter speed change system, which comprises an engine, a gearbox and a tailing box, wherein the gearbox comprises a box base and a box upper cover; the box upper cover is arranged on the box base in a sealed way; an inner cavity is formed between the box upper cover and the box base; and the small-sized single-rotor unmanned helicopter speed change system also comprises a one-stage transmission mechanism, a tail rotor mechanism and a propeller mechanism. The small-sized single-rotor unmanned helicopter speed change system has the advantages that a transmission system only has two-stage transmission; and a tail rotor and a propeller obtain power from two-stage transmission. Compared with the three-stage transmission of the existing small-sized single-rotor unmanned helicopter speed change system, the small-sized single-rotor unmanned helicopter speed change system has the advantages that the transmission stages are reduced; the transmission noise is reduced; the transmission efficiency is improved; components are reduced; the weight is reduced; the load on the engine during the flight is reduced; the gearbox part only comprises one-stage transmission; during the operation, the vibration is reduced, so that the interference of the vibration on electronic equipment is reduced; and the flight safety and the flight reliability are guaranteed.

Description

technical field [0001] The invention relates to a transmission system, in particular to a transmission system of a small single-rotor unmanned helicopter. Background technique [0002] Unmanned helicopters have the advantages of flexible maneuverability, convenient take-off and landing, hovering in the air, and controllable flight speed. They are widely used in military, agricultural, and civilian fields. [0003] At present, the ultra-low-altitude small single-rotor unmanned helicopter with tail rotor is powered by a small double-cylinder opposed air-cooled engine, and its variable speed transmission system transmits power to the gearbox through a belt drive (one-stage speed change). And the three-stage speed change mechanism, the main rotor and the tail rotor obtain power from the two-stage and three-stage speed change respectively. [0004] The disadvantage of the variable speed transmission system is that the number of transmission stages is as high as three, which caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/12B64D35/00
CPCB64C27/12B64D35/00B64C2027/125
Inventor 王国初李宝进李兆志
Owner 衡阳云雁航空科技有限公司
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