CN206318021U - Depopulated helicopter variable ratio drive system - Google Patents
Depopulated helicopter variable ratio drive system Download PDFInfo
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- CN206318021U CN206318021U CN201621323880.7U CN201621323880U CN206318021U CN 206318021 U CN206318021 U CN 206318021U CN 201621323880 U CN201621323880 U CN 201621323880U CN 206318021 U CN206318021 U CN 206318021U
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- wheel
- tail
- engine
- transmission
- clutch
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Abstract
Depopulated helicopter variable ratio drive system, including engine, gearbox and tail dial 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 depopulated helicopter variable ratio drive system 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 depopulated helicopter variable ratio drive system.
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 depopulated helicopter gear system
System.Transmission system transmission efficiency that it solves existing small-sized single rotor magnetic tape trailer rotor unmanned helicopter is low, noise is big, vibrations
The problem of larger, complex structure.
The technical solution of the utility model is：Depopulated helicopter variable ratio drive system, including engine, gearbox and tail are dialled
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
Including primary transmission mechanism, tailspin wing mechanism and propeller mechanism；
Primary transmission mechanism includes preamble wheel, rear synchronizing wheel, primary axis, unilateral bearing, 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 sleeved on unilateral bearing and is positioned in the axial direction, and unilateral bearing is sleeved on primary axis and in the axial direction
It is positioned, its inner ring and primary axis are affixed, its outer ring and rear synchronizing wheel are affixed, primary axis two ends are supported installed in bottom seat respectively
On box cover, its 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 installed
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 supports are arranged on tail and dialled on case；
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；
Engine run when, all the way power pass sequentially through preamble wheel, belt, rear synchronizing wheel, primary axis, input gear and
Output gear, is transferred to propeller shaft, to drive propeller rotational；Another road power passes sequentially through preamble wheel, belt, rear same
Wheel, primary axis, tail front-wheel, belt and tail trailing wheel are walked, tail rotor axle is transferred to, to drive tail rotor to rotate.
The further technical scheme of the utility model is:The arbor of engine is closed by clutch pack and preamble wheel
Connection；Clutch pack includes starting fluted disc, connecting shaft, clutch and clutch bearing；The arbor of engine and connecting shaft are affixed,
Start fluted disc to be set with and be fixed on the arbor of engine, clutch sleeve is in connecting shaft and affixed with startup fluted disc, clutch
Device bearing holder (housing, cover) is in connecting shaft and is positioned in the axial direction, and preamble wheel is sleeved on outside clutch and clutch bearing；Pass through
Clutch is realized：The transmission separation when the arbor rotating speed of engine is less than definite value, the arbor rotating speed of engine is passed when being higher than definite value
Dynamic engagement.
Further technical scheme is the utility model:It also includes the skin for being used to be tensioned between tail front-wheel and tail trailing wheel
The tension pulley mechanism of band；Tension pulley mechanism includes tension wheel shaft, tensioning wheel, fixed seat；Tension wheel shaft upper end is arranged on bottom seat
Waist hole in, 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 pacified by bearing
On tension wheel shaft and positioned at the lower end of fixed seat.
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 depopulated helicopter variable ratio drive system, transmission series is reduced, drive noise reduction, transmission efficiency lifting, zero
Part is reduced, weight saving, the load of engine when reducing flight.Transmission components only include primary transmission, are shaken during operation
Reduction, reduces interference of the vibrations to electronic equipment, ensures flight safety reliability.
2nd, realize that engine misses are protected by unilateral bearing.Assuming that depopulated helicopter engine in flight course is unexpected
Flame-out, then engine crankshaft can stop operating in a short time, but propeller continues to rotate under effect of inertia, slows down slow
Reduction.If without unilateral bearing, power will reversely be exported from propeller shaft, pass sequentially through output gear, input gear, primary axis,
Synchronizing wheel, preamble wheel and connecting shaft are transferred to the arbor of engine afterwards, force to drive the arbor of engine to rotate, damage is started
Machine.After unilateral bearing, in the case of above-mentioned identical, power is reversely exported from propeller shaft, pass sequentially through output gear,
Input gear and primary axis are transferred to the inner ring of unilateral bearing, and the outer ring of individual event bearing is not with inner ring synchronous axial system, thus
Ensure that power will not reinfusion to arbor, realize the blowout protection of engine.
3rd, 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：
Depopulated helicopter variable ratio drive system, including engine 1, gearbox and tail dial case 3 and (are arranged on depopulated helicopter
In frame), 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, unilateral bearing 44, input gear 45
With tail front-wheel 46.
Preamble wheel 41 is associated by clutch pack with the arbor 11 of engine 1, and preamble wheel 41 passes through the band of belt 47
Synchronizing wheel 42 is rotated after dynamic, and rear synchronizing wheel 42 is sleeved on unilateral bearing 44 and is positioned in the axial direction, and unilateral bearing 44 is set with
And be fixed on primary axis 43 and be positioned in the axial direction, its outer ring and rear synchronizing wheel 42 are affixed, and the two ends of primary axis 43 are propped up respectively
Hold on bottom seat 21 and box cover 22, its lower end is stretched out from inner chamber 23, 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.
The arbor 11 of engine 1 is associated by clutch pack with preamble wheel 41；Clutch pack includes starting fluted disc
71st, connecting shaft 72, clutch block 73, clutch bearing 74 and contiguous block 75；The arbor 11 and connecting shaft 72 of engine 1 are affixed, open
Active toothed disk 71 is set with and is fixed on the arbor 11 of engine 1, and contiguous block 75 is fixedly connected with starting fluted disc 71, and clutch block 73 is pacified
In the chute of contiguous block 75, clutch bearing 74 is sleeved in connecting shaft 72 and is positioned in the axial direction, preamble wheel 41
It is sleeved on outside clutch bearing 74, provided with the internal tooth being engaged with the external tooth of clutch block 73, its underpart endoporus in the endoporus of its underpart
Clutch block 73 and contiguous block 75 are accommodated in the inner；When the rotating speed of arbor 11 of engine 1 is less than definite value, clutch block 73 not with it is preceding same
Step wheel 41 is contacted, i.e. transmission separation；When the rotating speed of arbor 11 of engine 1 is higher than definite value, the centrifugal force that clutch block 73 is subject to is compeled
Make it be moved in the chute of contiguous block 75 to engage with 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 supports of tail rotor axle 52 are arranged on tail and dial case 3
On.
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：When engine 1 is run, power passes sequentially through preamble wheel 41, skin all the way
Band 47, rear synchronizing wheel 42, primary axis 43, input gear 45 and output gear 61, are transferred to propeller shaft 62, to drive propeller
Rotate；Another road power passes sequentially through preamble wheel 41, belt 47, rear synchronizing wheel 42, primary axis 43, tail front-wheel 46, belt 53
With tail trailing wheel 51, tail rotor axle 52 is transferred to, to drive tail rotor to rotate.
Claims (3)
1. depopulated helicopter variable ratio drive system, including engine (1), gearbox and tail dial case (3)；Gearbox includes bottom seat
(21) and box cover (22), box cover (22) is sealingly mounted on bottom seat (21) and forms inner chamber between bottom seat (21)
(23)；It is characterized in that：Also include primary transmission mechanism, tailspin wing mechanism and propeller mechanism；
Primary transmission mechanism includes preamble wheel (41), rear synchronizing wheel (42), primary axis (43), unilateral bearing (44), input tooth
Take turns (45) and tail front-wheel (46)；
Preamble wheel (41) is associated with the arbor (11) of engine (1) and rotated with arbor (11), and preamble wheel (41) passes through skin
Synchronizing wheel (42) is rotated after band (47) drives, and rear synchronizing wheel (42) is sleeved on unilateral bearing (44) and is positioned in the axial direction,
Unilateral bearing (44) is sleeved on primary axis (43) and is positioned in the axial direction, and its inner ring and primary axis (43) are affixed, its outer ring
Affixed with rear synchronizing wheel (42), primary axis (43) two ends are supported on bottom seat (21) and box cover (22) respectively, under it
End is stretched out from inner chamber (23), and tail front-wheel (46) is arranged on primary axis (43) lower end and is located at inner chamber (23) outside；Input gear
(45) it is arranged on primary axis (43) and in inner chamber (23)；
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), tail rotor axle (52) two supports peace
Dialled mounted in tail on case (3)；
Propeller mechanism includes output gear (61) and propeller shaft (62)；Input gear (45) in primary transmission mechanism with it is defeated
Go out gear (61) engagement, output gear (61) is arranged on propeller shaft (62), and propeller shaft (62) two ends support installation respectively
On bottom seat (21) and box cover (22), its upper end is stretched out from inner chamber (23)；
When engine (1) is run, power passes sequentially through preamble wheel (41), belt (47), rear synchronizing wheel (42), primary axis all the way
(43), input gear (45) and output gear (61), are transferred to propeller shaft (62), to drive propeller rotational；Move on another road
Power pass sequentially through preamble wheel (41), belt (47), rear synchronizing wheel (42), primary axis (43), tail front-wheel (46), belt (53) and
Tail trailing wheel (51), is transferred to tail rotor axle (52), to drive tail rotor to rotate.
2. depopulated helicopter variable ratio drive system as claimed in claim 1, it is characterized in that：The arbor (11) of engine (1) leads to
Clutch pack is crossed to associate with preamble wheel (41)；Clutch pack includes starting fluted disc (71), connecting shaft (72), clutch block
(73), clutch bearing (74) and contiguous block (75)；The arbor (11) and connecting shaft (72) of engine (1) are affixed, start fluted disc
(71) it is set with and is fixed on the arbor of engine (1) (11), contiguous block (75) is fixedly connected with starting fluted disc (71), clutch block
(73) in the chute of contiguous block (75), clutch bearing (74) is sleeved in connecting shaft (72) and determined in the axial direction
Position, preamble wheel (41) is sleeved on clutch bearing (74) outside, and the external tooth being provided with the endoporus of its underpart with clutch block (73) matches
Clutch block (73) and contiguous block (75) are accommodated in the inner by the internal tooth of conjunction, its underpart endoporus；When arbor (11) rotating speed of engine (1)
During less than definite value, clutch block (73) is not contacted with preamble wheel (41), i.e. transmission separation；When the arbor (11) of engine (1) turns
When speed is higher than definite value, the centrifugal force that clutch block (73) is subject to forces it to be moved to and preamble wheel in contiguous block (75) chute
(41) engage, i.e. transmission engagement.
3. depopulated helicopter variable ratio drive system as claimed in claim 1 or 2, it is characterized in that：It also includes being used to be tensioned tail
The tension pulley mechanism of belt (53) between front-wheel (46) and tail trailing wheel (51)；Tension pulley mechanism includes tension wheel shaft (81), opened
Bearing up pulley (82), fixed seat (83)；Tension wheel shaft (81) upper end is arranged in the waist hole of bottom seat (21), and lower end is from fixed seat (83)
On axis hole in stretch out, fixed seat (83) be connected to bottom seat (21) lower end, tensioning wheel (82) by bearing be arranged on tensioning
On wheel shaft (81) and positioned at the lower end of fixed seat (83).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015209860906 | 2015-12-03 | ||
| CN201520986090 | 2015-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206318021U true CN206318021U (en) | 2017-07-11 |
Family
ID=59264460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621323880.7U Expired - Fee Related CN206318021U (en) | 2015-12-03 | 2016-12-05 | Depopulated helicopter variable ratio drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206318021U (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 CN201621323880.7U patent/CN206318021U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20191205 |