CN104787323A

CN104787323A - Unmanned helicopter transmission mechanism with combination of synchronous belt and wet type speed reducer

Info

Publication number: CN104787323A
Application number: CN201510151557.XA
Authority: CN
Inventors: 王川; 刘静江
Original assignee: Day Started Innovation (beijing) Technology Co Ltd
Current assignee: Day Started Innovation (beijing) Technology Co Ltd
Priority date: 2015-04-01
Filing date: 2015-04-01
Publication date: 2015-07-22

Abstract

The invention discloses an unmanned helicopter transmission mechanism with combination of a synchronous belt and a wet type speed reducer. The unmanned helicopter transmission mechanism consists of a turbine shaft engine, an engine mounting base, an engine power output belt wheel, a wet type gearbox input shaft belt wheel, a belt, a main shaft and a wet type gearbox, wherein the engine power output belt wheel is mounted on the output shaft of the turbine shaft engine and is used as a driving wheel to drive the wet type gearbox input shaft belt wheel through the belt; the wet type gearbox input shaft belt wheel is meshed with an umbrella spiral gear inside the wet type gearbox and is used for driving the main shaft to rotate; the belt is driven by the output shaft of the turbine shaft engine to transmit power to the input shaft of the wet type gearbox; the umbrella gear is mounted inside the wet type gearbox and is lubricated by using an oil bath. The unmanned helicopter transmission mechanism has practical values in the field of design of aviation aircrafts.

Description

The depopulated helicopter transmission device of a kind of Timing Belt and wet type reducer group

Technical field

The present invention relates to the depopulated helicopter transmission device of a kind of Timing Belt and wet type reducer group, it is with the Power train design of the small sized turbine shaft generator depopulated helicopter that is power, belongs to aviation aircraft design field.

Background technology

Depopulated helicopter is generally used for aviation target, battlefield investigation, injures the military mission such as assessment, target guide, also can be used for the non-military task such as flight test, aerial mapping simultaneously.Comparatively fixed wing aircraft, depopulated helicopter has the functions such as hovering, vertical takeoff and landing, can execute the task more flexibly.Because depopulated helicopter parts are many, therefore the position of its all parts needs to consider full machine center of gravity, operating needs, installation interference etc. problem.And due to depopulated helicopter engine power limited, often will drive the great rotor of size by big retarding ratio, therefore the Power train of a frame depopulated helicopter is most important

The power-efficient of driving engine is exported to main shaft by the Power train primary responsibility of depopulated helicopter, drive the main rotor of helicopter to rotate and produce lift, main load has the lift and moment of torsion that are brought by rotor, has the aerodynamic force that aerodynamic loading brings, and has the mass force loading and bring load.The Power train of current depopulated helicopter mainly drives main oar to rotate by the drive shaft canine tooth wheel disc of vertically arranged driving engine.The many employings of structure of traditional depopulated helicopter also adopt the drive configuration of this open type mostly, namely the miniature gears on engine power output shaft drives big gear wheel dribbling to move main shaft, outside whole drive configuration is all exposed to, especially for the helicopter of half involucrum, such Power train is equivalent to be directly exposed to outside machine, once have foreign matter or the parts that drop to snap in gear junction, will cannot output to main shaft to causing power, helicopter flight is constituted a latent danger safely; In addition, such open type structure makes helicopter cannot carry out work under the round-the-clock full topographic condition of complexity.Meanwhile, this depopulated helicopter requires that aircraft has larger mission payload and complicated aerial mission, and this project, for this problem, have developed the depopulated helicopter transmission device of a kind of Timing Belt and wet type reducer group, achieves extraordinary effect.

Summary of the invention

1. the technical matters that will solve

Traditional depopulated helicopter power system adopt the such structure of the straight gear-large fluted disc transmission of open type to cause the body of depopulated helicopter to shake and noise larger, make its application be subject to the restriction of environmental conditions, " Timing Belt-close wet type crowngear case " Power train design plan herein can solve the problem.

2. the technical scheme adopted

The present invention is mainly by realize the appropriate design of depopulated helicopter dynamic structure.

The technical scheme that the present invention specifically implements below is described.

1, belt gear appropriate design

The present invention is the depopulated helicopter transmission device of a kind of Timing Belt and wet type reducer group, it is by turboaxle motor (1), driving engine mount pad (2), engine power output pulley (3), wet type gearbox input shaft belt wheel (4), belt (5), main shaft (6), wet type gear case (7) forms, position annexation between them is: turboaxle motor (1) output shaft is provided with engine power output pulley (3), wet type gearbox input shaft belt wheel (4) is driven by belt (5) as driving wheel, wet type gearbox input shaft belt wheel (4) passes through umbrella-shaped screw gears meshing in wet type gear case (7) inside, main shaft (6) is driven to rotate.The output shaft of turboaxle motor drives belt by the input shaft of power transimission to wet type gear case, the reference radius of wet type gearbox input shaft belt wheel is greater than engine power output pulley, like this moment of torsion is tentatively improved, the bevel gear of the other end of wet type gearbox input shaft engages with the bevel gear of main shaft, drive shaft drives large oar to rotate, so again moment of torsion is improved further, this eliminate in conventional airframe mechanisms such as starting at right angle setting frame and large fluted disc, compared in traditional depopulated helicopter once by moment of torsion improve large fluted disc mechanism, the mechanism that this secondary improves moment of torsion makes structural volume greatly reduce, it is inner that crowngear is arranged on closed wet type gear case, adopt oil bath lubrication.Its structure as shown in Figure 1.

2, beneficial effect

The invention has the advantages that:

1) belt and crowngear connection structure is adopted to effectively reduce organization volume.

2) the important motivity mechanism adopting closed-end gear box structure to make all closes, and protection critical component, from destruction, makes aircraft can fly under complicated environmental condition (dust storm, misty rain weather etc.).

3) adopting belt to be connected with bevel gear makes power transmission efficiency greatly improve, and greatly reduces vibrations, makes aircraft flight more stable, be conducive to the normal table work of mission payload.

Accompanying drawing explanation

Fig. 1 is Poewr transmission mechanism integral structure axonometric drawing.

Fig. 2 is Power train lateral plan.

Fig. 3 is Power train front elevation.

In figure, nomenclature is as follows:

1, turboaxle motor; 2, driving engine mount pad; 3, engine power output pulley (driving wheel); 4, gearbox input shaft belt wheel (flower wheel); 5, belt; 6, main shaft; 7, wet type gear case;

Detailed description of the invention

See Fig. 1-Fig. 3, the depopulated helicopter transmission device of a kind of Timing Belt of the present invention and wet type reducer group, it is by turboaxle motor 1, driving engine mount pad 2, engine power output pulley 3 (driving wheel), gearbox input shaft belt wheel 4 (flower wheel), belt 5, main shaft 6, wet type gear case 7 forms, position annexation between them is: turboaxle motor 1 output shaft is installed with engine power output pulley 3, as driving wheel by belt 5 driven gear case input shaft belt wheel 4 i.e. flower wheel 4, flower wheel 4 passes through umbrella-shaped screw gears meshing in wet type gear case 7 inside, main shaft 6 is driven to rotate.

Below by example, embodiments of the present invention are described:

In the use procedure of depopulated helicopter, only need to safeguard normally it, comprise more oil change, bearing; Belt tension checks and bevel gear abrasion inspection and replacing thereof, because gear is in the inner oil bath lubrication of gear case, therefore in harsh environment, due to gear case leak tightness protection, the service life of part can correspondingly improve.

Claims

1. the depopulated helicopter transmission device of a Timing Belt and wet type reducer group, it is characterized in that: it is by turboaxle motor (1), driving engine mount pad (2), engine power output pulley (3), wet type gearbox input shaft belt wheel (4), belt (5), main shaft (6) and wet type gear case (7) composition, turboaxle motor (1) output shaft is provided with engine power output pulley (3), wet type gearbox input shaft belt wheel (4) is driven by belt (5) as driving wheel, wet type gearbox input shaft belt wheel (4) passes through umbrella-shaped screw gears meshing in wet type gear case (7) inside, main shaft (6) is driven to rotate, the output shaft of turboaxle motor drives belt by the input shaft of power transimission to wet type gear case, the reference radius of wet type gearbox input shaft belt wheel is greater than engine power output pulley, like this moment of torsion is improved, the bevel gear of the other end of gearbox input shaft engages with the bevel gear of main shaft, drive shaft drives large oar to rotate, so again moment of torsion is improved further, the mechanism that this secondary improves moment of torsion makes structural volume reduce, it is inner that crowngear is arranged on wet type gear case, adopts oil bath lubrication.