CN206318020U - Small-sized single rotor unmanned helicopter variable transmission mechanism - Google Patents
Small-sized single rotor unmanned helicopter variable transmission mechanism Download PDFInfo
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- CN206318020U CN206318020U CN201621323827.7U CN201621323827U CN206318020U CN 206318020 U CN206318020 U CN 206318020U CN 201621323827 U CN201621323827 U CN 201621323827U CN 206318020 U CN206318020 U CN 206318020U
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- wheel
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- tail
- engine
- transmission mechanism
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Abstract
Small-sized single rotor unmanned helicopter variable transmission mechanism, including engine, gearbox and coda wave case；Gearbox includes bottom seat and box cover, and box cover is sealingly mounted at bottom seat above and forms inner chamber between bottom seat；Also include primary transmission mechanism, tailspin wing mechanism and propeller mechanism.The utility model has the advantage of：Transmission system only has secondary transmission, and tail rotor and propeller obtain power from secondary transmission.Three-level compared to existing small-sized single rotor unmanned helicopter variable transmission mechanism is driven, and transmission series is reduced, and drive noise reduction, transmission efficiency lifting, parts are reduced, weight saving, the load of engine when reducing flight.Transmission components only include primary transmission, and reduction is shaken during operation, reduce interference of the vibrations to electronic equipment, ensure flight safety reliability.
Description
Technical field
The utility model is related to transmission system, particularly a kind of small-sized single rotor unmanned helicopter variable transmission mechanism.
Background technology
Depopulated helicopter has a maneuverability, and landing is convenient, can hovering, the advantages of flying speed is controllable extensively should
For the field such as military, agriculture and civilian.
Current extreme low-altitude small-sized single rotor magnetic tape trailer rotor unmanned helicopter is made using small-size double cylinder opposed type air cooling engine
Power, its variable ratio drive system imparted power to by V belt translation (one-level speed change) in gearbox, gearbox provided with two grades and
Three-stage speed change mechanism, main rotor and tail rotor obtain power from two grades and three-step gear shift respectively.
The weak point of variable ratio drive system is：It is driven series more up to three-level, so that cause drive noise big, transmission effect
The problem of rate is low.And the complex structure of this transmission system, main screw lift is larger, and engine load is higher during flight；Gearbox
Part have two-stage transmission, shaken during operation it is larger, to flight electronics produce interference, influence flight safety reliability.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and provides a kind of small-sized single rotor unmanned helicopter and become
Fast transmission mechanism.Transmission system transmission efficiency that it solves existing small-sized single rotor magnetic tape trailer rotor unmanned helicopter is low, make an uproar
Sound is big, it is larger to shake, complex structure the problem of.
The technical solution of the utility model is：Small-sized single rotor unmanned helicopter variable transmission mechanism, including engine, change
Fast case and coda wave case；Gearbox includes bottom seat and box cover, and box cover is sealingly mounted at bottom seat above and between bottom seat
Form inner chamber；Also include primary transmission mechanism, tailspin wing mechanism and propeller mechanism；
Primary transmission mechanism includes preamble wheel, rear synchronizing wheel, primary axis, input gear and tail front-wheel；
Preamble wheel is associated with the arbor of engine and rotated with arbor, and preamble wheel after belt drive by synchronously rotating
Dynamic, rear synchronizing wheel is set with and is fixed on primary axis, and primary axis two ends are supported on bottom seat and box cover respectively, one-level
Axle lower end is stretched out from inner chamber, and tail front-wheel is arranged on primary axis lower end and outside inner chamber；Input gear is arranged on primary axis
And in inner chamber；
Tailspin wing mechanism includes tail trailing wheel and tail rotor axle；After tail front-wheel in primary transmission mechanism is by belt drive tail
Wheel is rotated, and tail trailing wheel is arranged on tail rotor axle, and tail rotor axle two ends are arranged on coda wave case by bearing；
Propeller mechanism includes output gear and propeller shaft；Input gear in primary transmission mechanism is nibbled with output gear
Close, output gear is arranged on propeller shaft, propeller shaft two ends are supported on bottom seat and box cover respectively, its upper end
Stretched out from inner chamber.
The further technical scheme of the utility model is:It also includes the belt for being used to be tensioned between tail front-wheel and tail trailing wheel
Tension pulley mechanism；Tension pulley mechanism includes tension wheel shaft, tensioning wheel, fixed seat；Tension wheel shaft upper end is arranged on bottom seat
In waist hole, lower end is stretched out from the axis hole in fixed seat, and fixed seat is connected to the lower end of bottom seat, and tensioning wheel is installed by bearing
On tension wheel shaft and positioned at the lower end of fixed seat.
Further technical scheme is the utility model:The arbor of engine is closed by clutch pack and preamble wheel
Connection；Clutch pack includes starting fluted disc, connecting shaft, clutch block, clutch bearing and clutch base；The arbor of engine and company
Spindle is affixed, starts fluted disc and is set with and is fixed on the arbor of engine, and clutch base is fixedly connected with starting fluted disc, clutch block
It is sleeved on the slideway of clutch base, clutch bearing is sleeved in connecting shaft and is positioned in the axial direction, preamble wheel top
It is sleeved on outside clutch bearing, provided with the drag ring that is engaged with the rubbing surface of clutch block in the inwall of its underpart, its underpart will be from
Close block and clutch base is accommodated in the inner；When the arbor rotating speed of engine is less than definite value, clutch block is not contacted with preamble wheel, i.e.,
Transmission separation；When engine arbor rotating speed be higher than definite value when, clutch block by centrifugal action, centrifugal force make clutch block from
Be moved to and fitted with preamble wheel on clutch seat slideway, i.e. transmission engagement.
The utility model has the following advantages that compared with prior art：
1st, transmission system only has secondary transmission, and tail rotor and propeller obtain power from secondary transmission.Compared to existing
The three-level transmission of small-sized single rotor unmanned helicopter variable transmission mechanism, transmission series is reduced, drive noise reduction, transmission efficiency
Lifting, parts are reduced, weight saving, the load of engine when reducing flight.Transmission components only include primary transmission, fortune
Reduction is shaken during row, interference of the vibrations to electronic equipment is reduced, ensures flight safety reliability.
2nd, realize that engine crankshaft just exports power after reaching certain rotating speed by clutch pack, make engine start more
It is smooth, reduce the energy loss of startup stage.Realized by clutch block：The transmission point when the arbor rotating speed of engine is less than definite value
From transmission engagement when the arbor rotating speed of engine is higher than definite value.Be driven under released state, the arbor of engine drive connecting shaft and
Clutch bearing is rotated, and preamble wheel is not rotated.It is driven under engagement state, clutch block is engaged with preamble wheel, so that by power
Pass.
The utility model is further described below in conjunction with figure and embodiment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 removes the three-dimensional structure diagram after box cover for the utility model；
Fig. 3 is Fig. 2 B direction views and is used to represent tailspin wing mechanism and tension pulley mechanism.
Explanation：Belt and tailspin wing mechanism are not drawn in Fig. 2.
Embodiment
Embodiment 1：
As shown in Figure 1：Small-sized single rotor unmanned helicopter variable transmission mechanism, including engine 1, gearbox and coda wave case
3 (in the frames for being arranged on depopulated helicopter), primary transmission mechanism, tailspin wing mechanism, propeller mechanism and tension pulley mechanism.
Gearbox (in the frame for being arranged on depopulated helicopter) includes bottom seat 21 and box cover 22, the sealing peace of box cover 22
Inner chamber 23 is formed on bottom seat 21 and between bottom seat 21.
Primary transmission mechanism includes preamble wheel 41, rear synchronizing wheel 42, primary axis 43, input gear 45 and tail front-wheel 46
(as shown in Figure 2).Preamble wheel 41 is associated by clutch pack with the arbor 11 of engine 1, and preamble wheel 41 passes through belt
Synchronizing wheel 42 is rotated after 47 drives, and rear synchronizing wheel 42 is set with and is fixed in primary axis 43, and the two ends of primary axis 43 support installation respectively
On bottom seat 21 and box cover 22, the lower end of primary axis 43 is stretched out from inner chamber 23, and tail front-wheel 46 is arranged on the lower end of primary axis 43
And outside inner chamber 23.Input gear 45 is arranged on primary axis 43 and in inner chamber 23.
Clutch pack includes starting fluted disc 71, connecting shaft 72, clutch block 73, clutch bearing 74 and clutch base 75；
The arbor 11 and connecting shaft 72 of engine 1 are affixed, start fluted disc 71 and are set with and are fixed on the arbor 11 of engine 1, clutch
Seat 75 is bolted to connection with starting fluted disc 71, and clutch block 73 is sleeved on the slideway of clutch base 75, clutch bearing
74 are sleeved in connecting shaft 72 and are positioned in the axial direction, and preamble wheel 41 is sleeved on outside clutch bearing 74, its underpart inwall
In provided with the drag ring that is engaged with the rubbing surface of clutch block 73, clutch block 73 and clutch base 75 are accommodated in the inner by its underpart.
When the rotating speed of arbor 11 of engine 1 is less than definite value, the centrifugal force that clutch block 73 is subject to is insufficient to allow it to be slided in clutch base 75
Moved on road, clutch block 73 is not contacted with preamble wheel 41, i.e. transmission separation；When the rotating speed of arbor 11 of engine 1 is higher than definite value
When, clutch block 73 is by centrifugal action, and centrifugal force makes clutch block 73 be moved on the slideway of clutch base 75 and preamble wheel
41 laminatings, specifically the rubbing surface of clutch fast 73 is fitted with the drag ring of the lower inner wall of preamble wheel 41, i.e. transmission engagement.
Tailspin wing mechanism includes tail trailing wheel 51 and tail rotor axle 52.Tail front-wheel 46 in primary transmission mechanism passes through belt 53
Tail trailing wheel 51 is driven to rotate, tail trailing wheel 51 is arranged on tail rotor axle 52, the two ends of tail rotor axle 52 are arranged on coda wave by bearing
On case 3.
Propeller mechanism includes output gear 61 and propeller shaft 62.Input gear 45 and output in primary transmission mechanism
Gear 61 is engaged, and output gear 61 is arranged on propeller shaft 62, and the two ends of propeller shaft 62 are supported installed in bottom seat 21 respectively
On box cover 22, its upper end is stretched out from inner chamber 23.
Tension pulley mechanism is used for the belt 53 being tensioned between tail front-wheel 46 and tail trailing wheel 51, and it includes tension wheel shaft 81, opened
Bearing up pulley 82, fixed seat 83.The upper end of tension wheel shaft 81 is arranged in the waist hole of bottom seat 21, and lower end is from the axis hole in fixed seat 83
Stretch out, fixed seat 83 is connected to the lower end of bottom seat 21, tensioning wheel 82 is arranged on tension wheel shaft 81 and positioned at solid by bearing
The lower end of reservation 83.
Sketch drive path of the present utility model：As shown in Figure 1：It is same before power is passed sequentially through all the way when engine 1 is run
Step wheel 41, belt 47, rear synchronizing wheel 42, primary axis 43, input gear 45 and output gear 61, are transferred to propeller shaft 62, with
Drive propeller rotational；Another road power passes sequentially through preamble wheel 41, belt 47, rear synchronizing wheel 42, primary axis 43, tail front-wheel
46 (as shown in Figure 2), belt 53 and tail trailing wheel 51, are transferred to tail rotor axle 52 (as shown in Figure 3), to drive tail rotor to rotate.
Claims (3)
1. small-sized single rotor unmanned helicopter variable transmission mechanism, including engine, gearbox and coda wave case；Gearbox includes case
Base and box cover, box cover are sealingly mounted at bottom seat above and form inner chamber between bottom seat；It is characterized in that：Also include one
Level transmission mechanism, tailspin wing mechanism and propeller mechanism；
Primary transmission mechanism includes preamble wheel, rear synchronizing wheel, primary axis, input gear and tail front-wheel；
Preamble wheel is associated with the arbor of engine and rotated with arbor, and preamble wheel is rotated by synchronizing wheel after belt drive,
Synchronizing wheel is set with and is fixed on primary axis afterwards, and primary axis two ends are supported on bottom seat and box cover respectively, primary axis
Lower end is stretched out from inner chamber, and tail front-wheel is arranged on primary axis lower end and outside inner chamber；Input gear is arranged on primary axis simultaneously
In inner chamber；
Tailspin wing mechanism includes tail trailing wheel and tail rotor axle；Tail front-wheel in primary transmission mechanism after belt drive tail by rotating
Dynamic, tail trailing wheel is arranged on tail rotor axle, and tail rotor axle two ends are arranged on coda wave case by bearing；
Propeller mechanism includes output gear and propeller shaft；Input gear in primary transmission mechanism is engaged with output gear,
Output gear be arranged on propeller shaft on, propeller shaft two ends support respectively installed in bottom seat and box cover on, its upper end from
Stretched out in inner chamber.
2. small-sized single rotor unmanned helicopter variable transmission mechanism as claimed in claim 1, it is characterized in that：It also includes being used for
The tension pulley mechanism for the belt being tensioned between tail front-wheel and tail trailing wheel；Tension pulley mechanism includes tension wheel shaft, tensioning wheel, fixation
Seat；Tension wheel shaft upper end is arranged in the waist hole of bottom seat, and lower end is stretched out from the axis hole in fixed seat, and fixed seat is connected to case
The lower end of base, tensioning wheel is arranged on tension wheel shaft and positioned at the lower end of fixed seat by bearing.
3. small-sized single rotor unmanned helicopter variable transmission mechanism as claimed in claim 1 or 2, it is characterized in that：Engine
Arbor is associated by clutch pack with preamble wheel；Clutch pack includes starting fluted disc, connecting shaft, clutch block, clutch
Bearing and clutch base；The arbor of engine and connecting shaft are affixed, start fluted disc and are set with and are fixed on the arbor of engine, from
Clutch seat is fixedly connected with starting fluted disc, and clutch block is sleeved on the slideway of clutch base, and clutch bearing is sleeved on connecting shaft
It is positioned above and in the axial direction, preamble wheel top is sleeved on outside clutch bearing, is provided with and clutch block in the inwall of its underpart
Clutch block and clutch base are accommodated in the inner by the drag ring that rubbing surface is engaged, its underpart；When the arbor rotating speed of engine is less than
During definite value, clutch block is not contacted with preamble wheel, i.e. transmission separation；When the arbor rotating speed of engine is higher than definite value, clutch block
By centrifugal action, centrifugal force makes clutch block be moved on clutch base slideway to fit with preamble wheel, i.e. transmission engagement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015209861839 | 2015-12-03 | ||
| CN201520986183 | 2015-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206318020U true CN206318020U (en) | 2017-07-11 |
Family
ID=59265686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621323827.7U Expired - Fee Related CN206318020U (en) | 2015-12-03 | 2016-12-05 | Small-sized single rotor unmanned helicopter variable transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206318020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346712A (en) * | 2015-12-03 | 2016-02-24 | 衡阳云雁航空科技有限公司 | Small-sized single-rotor unmanned helicopter speed change system |
-
2016
- 2016-12-05 CN CN201621323827.7U patent/CN206318020U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346712A (en) * | 2015-12-03 | 2016-02-24 | 衡阳云雁航空科技有限公司 | Small-sized single-rotor unmanned helicopter speed change system |
| CN105346712B (en) * | 2015-12-03 | 2023-12-15 | 江苏神铸智能科技有限公司 | Speed changing system of small single-rotor unmanned helicopter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20191205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |