CN105332794A - Vertically-outputting speed change mechanism and aircraft engine - Google Patents
Vertically-outputting speed change mechanism and aircraft engine Download PDFInfo
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- CN105332794A CN105332794A CN201510646029.1A CN201510646029A CN105332794A CN 105332794 A CN105332794 A CN 105332794A CN 201510646029 A CN201510646029 A CN 201510646029A CN 105332794 A CN105332794 A CN 105332794A
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Abstract
The invention discloses a vertically-outputting speed change mechanism and an aircraft engine. The vertically-outputting speed change mechanism comprises a shell, a power output shaft and a power input shaft. The power output shaft is supported in the shell in a running fit manner and the power output end of the power output shaft vertically extends out of the shell. The power output shaft is directly supported through the shell, so that the fit relation between the power output shaft and the shell is a running fit relation, the supporting effect is achieved, the overall stability of the mechanism is improved, and therefore stable power output is achieved; and the speed change mechanism is simple and compact in structure, low in weight, small in occupied space and suitable for being used by a small aircraft.
Description
Technical field
The present invention relates to the gear vertically exported, the gear of particularly a kind of vertical output.
Background technique
The Power output of motor has different outbound courses according to different Environmental Conditions, such as adopts propeller cavitation as the aircraft of power, then need Power output direction upwards and for driving propeller cavitation to form the driving forces such as lifting.For small aircraft, need motor and output mechanism entirety to have compact and light-weighted feature, existing structural design is then comparatively complicated, and stressing conditions is not ideal enough owing to being vertical output; Not only occupy larger space, also affect the stability of output mechanism entirety, increase use technology cost.
Therefore, need to improve the existing vertical output mechanism for motor, simple and compact for structure, lighter in weight, takes up room less, and has stable Power output, is applicable to small aircraft and uses.
Summary of the invention
In view of this, the object of this invention is to provide a kind of gear of vertical output, simple and compact for structure, lighter in weight, takes up room less, and has stable Power output, is applicable to small aircraft and uses.
The gear of vertical output of the present invention, comprises housing, pto＝power take-off and power input shaft, and described pto＝power take-off is rotatably assorted and is supported on housing and its clutch end vertically stretches out housing; Power input shaft is rotatably assorted and is installed on housing and carries out transmission, can adopt existing fit system, not repeat them here, and the matching relationship between pto＝power take-off and housing, for being rotatably assorted and forming support, increases the stability of whole mechanism; Power input shaft is then for accepting engine power, by kinds of drive such as gears, does not repeat them here.
Further, described power input shaft be parallel to engine crankshaft arrange and for inputting engine crankshaft power, described pto＝power take-off is spatially perpendicular to power input shaft; This structure can facilitate engine arrangement, and namely adopt ordinary motor vehicle (motorcycle) motor can form vertical shaft and export, integral power construction cost is lower, and stable.
Further, described power input shaft transmission cooperation is provided with drive bevel gear, and pto cooperation is provided with for the driven wheel of differential with drive bevel gear engagement driving; Described power input shaft is provided with the power input gear for inputting bent axle power, is realized the conversion of outbound course by bevel gear engagement pair, the simple and stable output of structure; Entirety realizes transmission by gear pair, makes whole power system architecture simply compact, takies less space, and stable transmission.
Further, described pto＝power take-off is coordinated with housing into rotation by tapered roller bearing, is formed and is rotatably assorted, be more suitable for support and the rotation of pivotal axis, the problem of the transmission shakinesses such as the play that partial offset axial force causes by tapered roller bearing.
Further, described housing is detachably provided with the bearing support for installing described tapered roller bearing, and described pto＝power take-off is axially fixed at bearing support and is rotatably assorted by tapered roller bearing with bearing support; Adopt independent bearing support to be formed to coordinate, the coaxality between bearing support and pto＝power take-off conveniently can be adjusted when installing and use, avoid the Form and position error caused by the manufacture of housing entirety, thus be beneficial to the installation of pto＝power take-off and be beneficial to stable Power output; Further, because bearing support is absolute construction, replacing and the maintenance of bearing and assembly can be facilitated.
Further, described bearing support is T-shaped nested structure, and described housing is provided with bearing saddle bore, and bearing support penetrates bearing saddle bore and the edge of a wing of T-shaped nested structure is installed on outboard end corresponding with bearing saddle bore on housing by detachable; As shown in the figure, the edge of a wing of T-shaped nested structure is also provided with steel pad with between outboard end corresponding with bearing saddle bore on housing, is also beneficial to adjustment and installs morpheme while formation sealing, is beneficial to and ensures install coaxality and have certain adaptive capacity.
Further, described tapered roller bearing comprises tapered roller bearing and lower tapered roller bearing, correspondence is installed on the two ends up and down of inner hole of bearing seat for rotational support pto＝power take-off respectively, and the upper and lower two ends of described inner hole of bearing seat are processed with respectively installs the upper heavy stand of tapered roller bearing and lower tapered roller bearing and lower heavy stand for correspondence; Two tapered roller bearings can bear axial force simultaneously, increase stability; And heavy stand structure is more conducive to form stable load basis, is formed axial with constraint that is radial direction, be beneficial to while location is installed and ensure long-term coaxality.
Further, described bearing saddle bore inner circle is coordinated by least two elastic rings be vertically set up in parallel with between bearing support cylindrical; Elastic ring generally adopts O RunddichtringO, also has good deformability while having seal action, thus makes bearing support have good coaxality adaptive capacity, ensures the stability of Power output, avoids forming eccentric wear between revolute pair.
Further, bearing support is detachable is provided with the bearing (ball) cover jointly forming the bearing installation cavity sealed with the external world with bearing support, the clutch end sealing of described pto＝power take-off passes bearing (ball) cover, by the setting of bearing (ball) cover, can facilitate the cleaning of bearing bore inside, examination and maintenance; Further, the existence of bearing installation cavity can make bearing dispel the heat well, and has abundant lubricating place.
Further, described upper tapered roller bearing bears the downward axial force of pto＝power take-off, and lower tapered roller bearing bears Power output axial force axially; Difference for input and output direction rationally arranges the tapered roller bearing having and bear axial force ability, not only makes Power output avoid the interference of axial force, also pointed direct elimination, improves output accuracy.
The invention also discloses a kind of aircraft engine, described aircraft engine is provided with the gear of described vertical output.
Beneficial effect of the present invention: the gear of vertical output of the present invention, by the direct supporting motive force output shaft of housing, make the matching relationship between pto＝power take-off and housing for being rotatably assorted and forming support, increase the stability of whole mechanism, thus there is stable Power output; And simple and compact for structure, lighter in weight, takes up room less, be applicable to small aircraft and use.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, as shown in the figure: the gear of the vertical output of the present embodiment, comprise housing 1, pto＝power take-off 5 and power input shaft 13, described pto＝power take-off 5 is rotatably assorted and is supported on housing 1 and its clutch end vertically stretches out housing 1; Power input shaft 13 is rotatably assorted and is installed on housing 1 and carries out transmission, can adopt existing fit system, not repeat them here; Matching relationship between pto＝power take-off and housing, for being rotatably assorted and forming support, increases the stability of whole mechanism; Power input shaft 13 is general passes through transmission transmission with engine crankshaft, for accepting engine power, by kinds of drive such as gears, does not repeat them here.
In the present embodiment, described power input shaft 13 be parallel to engine crankshaft arrange and for inputting engine crankshaft power, described pto＝power take-off 5 is spatially perpendicular to power input shaft 13, and the projection that spatial vertical refers in the plane all parallel with the two axis is vertical; As shown in the figure, the crankshaft installed position on housing 1 and the installation position axis being parallel of power input shaft 13; This structure can facilitate engine arrangement, and namely adopt ordinary motor vehicle (comprising motorcycle) motor can form vertical shaft and export, integral power construction cost is lower, and stable.
In the present embodiment, described power input shaft 13 transmission cooperation is provided with drive bevel gear 15, and pto＝power take-off 5 transmission cooperation is provided with for the driven wheel of differential 12 with drive bevel gear 15 engagement driving; Described power input shaft 13 is provided with power input gear 14; Power transmission to power input gear 14, by the mode (such as, jack shaft is provided with the structure of intermediate drive gear) etc. of intermediate reduction gear mechanism, can set by the bent axle of motor as required, no longer superfluous at this; The conversion of outbound course is realized, the simple and stable output of structure by bevel gear engagement pair; Entirety realizes transmission by gear pair, makes whole power system architecture simply compact, takies less space, and stable transmission.
In the present embodiment, described pto＝power take-off 5 is rotatably assorted by tapered roller bearing and housing 1, is formed and is rotatably assorted, be more suitable for support and the rotation of pivotal axis, the problem of the transmission shakinesses such as the play that partial offset axial force causes by tapered roller bearing.
In the present embodiment, described housing 1 is detachably provided with the bearing support 8 for installing described tapered roller bearing, and described pto＝power take-off 5 is axially fixed at bearing support 8 and is rotatably assorted by tapered roller bearing with bearing support 8; Adopt independent bearing support to be formed to coordinate, the coaxality between bearing support and pto＝power take-off conveniently can be adjusted when installing and use, avoid the driving error caused by the Form and position error of the manufacture of housing 1 entirety, thus be beneficial to the installation of pto＝power take-off and be beneficial to stable Power output; Further, due to bearing support 8 be absolute construction and with pto＝power take-off axial restraint, replacing and the maintenance of bearing and assembly can be facilitated, and the engagement of convenient adjustment gear.
In the present embodiment, described bearing support 8 is T-shaped nested structure, and described housing 1 is provided with bearing saddle bore, and bearing support 8 penetrates bearing saddle bore and the edge of a wing of T-shaped nested structure is installed on outboard end corresponding with bearing saddle bore on housing 1 by detachable; As shown in the figure, the edge of a wing of T-shaped nested structure is also provided with steel pad 10 with between outboard end corresponding with bearing saddle bore on housing 1, while forming sealing, also can utilize the thickness adjustment of steel pad 10 that morpheme is installed, be beneficial to and ensure coaxality is installed and there is certain adaptive capacity.
In the present embodiment, described tapered roller bearing comprises tapered roller bearing 4 and lower tapered roller bearing 2, correspondence is installed on the two ends up and down of inner hole of bearing seat for rotational support pto＝power take-off 5 respectively, and the upper and lower two ends of described inner hole of bearing seat are processed with respectively installs the upper heavy stand 7 of tapered roller bearing 4 and lower tapered roller bearing 2 and lower heavy stand 11 for correspondence, meanwhile, pto＝power take-off is also formed the structure to upper tapered roller bearing 4 and lower tapered roller bearing 2 axial limiting, as shown in the figure, driven wheel of differential and pto＝power take-off one-body molded, convenient to install, two tapered roller bearings can bear axial force simultaneously, increase stability, as shown in the figure, lower tapered roller bearing 2 outer ring is upwards against lower heavy stand 11, and inner ring lower end is against the shaft shoulder on pto＝power take-off, upper tapered roller bearing 4 outer ring is against heavy stand 7 downwards, inner ring upper end is locked downwards by the locking ring 17 (screw thread) on pto＝power take-off, this structure makes pto＝power take-off and bearing support form axial integrative-structure, when adjusting the thickness of steel pad 10, the axial position of adjustable driven wheel of differential, as shown in the figure, described drive bevel gear 15 also adjustable axial position, for matching with driven wheel of differential, reach better engagement, prevent heel and toe wear and spot corrosion, adjustment piece is annular shim 21, described power input shaft 13 two ends are rotatably assorted respectively by annular bearing with rolling contact and are supported in casing 1, the ring-shaped step (the present embodiment is formed in one) that power input shaft 13 is arranged is withstood in described drive bevel gear 15 front end, wherein an annular shim 21 is between drive bevel gear 3 back and corresponding annular bearing with rolling contact inner ring, between the inner ring of the annular bearing with rolling contact of the shaft shoulder that another annular shim is arranged on power input shaft 13 and correspondence, change thickness and the adjustable axial position of two drive bevel gear annular shims, structure is simple, be easy to realize, said structure can adjust the engagement situation of bevel gear engagement pair, is more conducive to form stable load basis, is formed axial with constraint that is radial direction, is beneficial to while installing location and ensures long-term coaxality.
In the present embodiment, coordinated by least two elastic rings be vertically set up in parallel 9 between described bearing saddle bore inner circle with bearing support 8 cylindrical; Elastic ring 9 generally adopts O RunddichtringO, while there is seal action, also there is good deformability, thus make bearing support 8 when restrained, have certain swing degrees of freedom, thus there is good coaxality adaptive capacity, ensure the stability of Power output, avoid forming eccentric wear between revolute pair.
In the present embodiment, detachable being provided with of bearing support 8 forms the bearing (ball) cover 6 with the extraneous bearing installation cavity 3 sealed jointly with bearing support 8, and as shown in the figure, bearing (ball) cover 6 is arranged at bearing support 8 by screw is detachable, and is provided with locating stud, conveniently installs location; The clutch end sealing of described pto＝power take-off 5 passes bearing (ball) cover 6, and as shown in the figure, bearing (ball) cover 6 is provided with oil sealing 18 for the clutch end ending cover hole through pto＝power take-off 5, forms sealing; The setting of bearing (ball) cover, can facilitate the cleaning of bearing bore inside, examination and maintenance; Further, the existence of bearing installation cavity can make bearing dispel the heat well, and has abundant lubricating place.
In the present embodiment, described upper tapered roller bearing 4 bears the downward axial force of pto＝power take-off, and lower tapered roller bearing 2 bears Power output axial force axially; Difference for input and output direction rationally arranges the tapered roller bearing having and bear axial force ability, not only makes Power output avoid the interference of axial force, also pointed direct elimination, improves output accuracy.
The invention also discloses a kind of aircraft engine, described aircraft engine is provided with the gear vertically exported described in the present embodiment.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. the gear vertically exported, is characterized in that: comprise housing, pto＝power take-off and power input shaft, and described pto＝power take-off is rotatably assorted and is supported on housing and its clutch end vertically stretches out housing.
2. the gear of vertical output according to claim 1, is characterized in that: described power input shaft is parallel to engine crankshaft setting and for inputting engine crankshaft power, described pto＝power take-off is spatially perpendicular to power input shaft.
3. the gear of vertical output according to claim 2, is characterized in that: described power input shaft transmission cooperation is provided with drive bevel gear, and pto cooperation is provided with for the driven wheel of differential with drive bevel gear engagement driving; Described power input shaft is provided with the power input gear for inputting bent axle power.
4. the gear of vertical output according to claim 1, is characterized in that: described pto＝power take-off is coordinated with housing into rotation by tapered roller bearing.
5. the gear of vertical output according to claim 4, it is characterized in that: described housing is detachably provided with the bearing support for installing described tapered roller bearing, and described pto＝power take-off is axially fixed at bearing support and is rotatably assorted by tapered roller bearing with bearing support.
6. the gear of vertical output according to claim 5, it is characterized in that: described bearing support is T-shaped nested structure, described housing is provided with bearing saddle bore, and bearing support penetrates bearing saddle bore and the edge of a wing of T-shaped nested structure is installed on outboard end corresponding with bearing saddle bore on housing by detachable.
7. the gear of vertical output according to claim 6, it is characterized in that: described tapered roller bearing comprises tapered roller bearing and lower tapered roller bearing, correspondence is installed on the two ends up and down of inner hole of bearing seat for rotational support pto＝power take-off respectively, and the upper and lower two ends of described inner hole of bearing seat are processed with respectively installs the upper heavy stand of tapered roller bearing and lower tapered roller bearing and lower heavy stand for correspondence.
8. the gear of vertical output according to claim 6, is characterized in that: described bearing saddle bore inner circle is coordinated by least two elastic rings be vertically set up in parallel with between bearing support cylindrical.
9. the gear of vertical output according to claim 7, it is characterized in that: bearing support is detachable is provided with the bearing (ball) cover jointly forming the bearing installation cavity sealed with the external world with bearing support, the clutch end sealing of described pto＝power take-off passes bearing (ball) cover.
10. an aircraft engine, is characterized in that: described aircraft engine is provided with the gear of the vertical output of the arbitrary claim of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646029.1A CN105332794B (en) | 2015-09-30 | 2015-09-30 | The gear and aircraft engine exported vertically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646029.1A CN105332794B (en) | 2015-09-30 | 2015-09-30 | The gear and aircraft engine exported vertically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105332794A true CN105332794A (en) | 2016-02-17 |
| CN105332794B CN105332794B (en) | 2018-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510646029.1A Active CN105332794B (en) | 2015-09-30 | 2015-09-30 | The gear and aircraft engine exported vertically |
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| Country | Link |
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| CN (1) | CN105332794B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374611A (en) * | 2021-05-27 | 2021-09-10 | 中国航发南方工业有限公司 | Accessory transmission structure |
| CN115614148A (en) * | 2022-12-05 | 2023-01-17 | 长沙光华航空科技有限公司 | Engine and unmanned aerial vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406404A (en) * | 1973-01-09 | 1975-09-17 | Volvo Penta Ab | Outboard drive for boats |
| JPH04191129A (en) * | 1990-11-26 | 1992-07-09 | Mazda Motor Corp | Power train structure of vehicle |
| CN2434435Y (en) * | 2000-06-15 | 2001-06-13 | 王京康 | I.C. engine having vertical power output |
| CA2254004C (en) * | 1998-02-10 | 2004-08-10 | Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) | Marine propulsion system |
| CN2746137Y (en) * | 2004-09-08 | 2005-12-14 | 重庆川渝精工机械配件开发有限公司 | Built-in reverse gear rear-axle drive device of regular tricycle |
-
2015
- 2015-09-30 CN CN201510646029.1A patent/CN105332794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406404A (en) * | 1973-01-09 | 1975-09-17 | Volvo Penta Ab | Outboard drive for boats |
| JPH04191129A (en) * | 1990-11-26 | 1992-07-09 | Mazda Motor Corp | Power train structure of vehicle |
| CA2254004C (en) * | 1998-02-10 | 2004-08-10 | Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) | Marine propulsion system |
| CN2434435Y (en) * | 2000-06-15 | 2001-06-13 | 王京康 | I.C. engine having vertical power output |
| CN2746137Y (en) * | 2004-09-08 | 2005-12-14 | 重庆川渝精工机械配件开发有限公司 | Built-in reverse gear rear-axle drive device of regular tricycle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374611A (en) * | 2021-05-27 | 2021-09-10 | 中国航发南方工业有限公司 | Accessory transmission structure |
| CN113374611B (en) * | 2021-05-27 | 2022-06-07 | 中国航发南方工业有限公司 | Accessory transmission structure |
| CN115614148A (en) * | 2022-12-05 | 2023-01-17 | 长沙光华航空科技有限公司 | Engine and unmanned aerial vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105332794B (en) | 2018-09-04 |
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Effective date of registration: 20191217 Address after: The 400052 District of Chongqing Kowloon Park C District Co-patentee after: Chongqing Longxin Engine Co., Ltd. Patentee after: Chongqing Longxin Engine Ltd. Address before: The 400015 District of Chongqing Kowloon Park C District Patentee before: Chongqing Longxin Engine Ltd. |
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