CN212616123U - Large-load unmanned coaxial helicopter gear box - Google Patents
Large-load unmanned coaxial helicopter gear box Download PDFInfo
- Publication number
- CN212616123U CN212616123U CN202021369788.0U CN202021369788U CN212616123U CN 212616123 U CN212616123 U CN 212616123U CN 202021369788 U CN202021369788 U CN 202021369788U CN 212616123 U CN212616123 U CN 212616123U
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- China
- Prior art keywords
- bevel gear
- oil
- box body
- coaxial helicopter
- cover plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 39
- 239000010705 motor oil Substances 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000002337 anti-port Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Gear Transmission (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model belongs to the technical field of the helicopter gear box, concretely relates to unmanned coaxial helicopter gear box of heavy load. This unmanned coaxial helicopter gear box of heavy load includes: the bevel gear transmission mechanism comprises a box body, a driving bevel gear vertically arranged in the box body, an upper bevel gear positioned above the driving bevel gear, and a lower bevel gear positioned below the driving bevel gear; the driving bevel gear is suitable for being connected with an output shaft of an engine so as to drive the upper bevel gear and the lower bevel gear to rotate reversely. The utility model discloses an unmanned coaxial helicopter gear box of heavy load drives bevel gear and bevel gear antiport down through initiative awl tooth to realize the reversal of the upper and lower rotor realization of the unmanned coaxial helicopter of heavy load, thereby offset the reaction torque, make the helicopter flight more steady.
Description
Technical Field
The utility model belongs to the technical field of the helicopter gear box, concretely relates to unmanned coaxial helicopter gear box of heavy load.
Background
Compared with a single-rotor helicopter, the coaxial helicopter has the advantages of short rotor wing arm, low power consumption, no need of mounting a tail rotor to balance counter torque generated by rotation of the rotor wing, more flexible structural design and the like.
The existing gear box of the large-load unmanned coaxial helicopter drives the two layers of rotors to rotate reversely, so that the structure is complex, and the maintenance cost is too high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an unmanned coaxial helicopter gear box of heavy load drives bevel gear and bevel gear antiport down through initiative awl tooth to realize that the upper and lower rotor of the unmanned coaxial helicopter of heavy load realizes the reversal.
In order to solve the technical problem, the utility model provides an unmanned coaxial helicopter gear box of heavy load, include:
the bevel gear transmission mechanism comprises a box body, a driving bevel gear vertically arranged in the box body, an upper bevel gear positioned above the driving bevel gear, and a lower bevel gear positioned below the driving bevel gear; the driving bevel gear is suitable for being connected with an output shaft of an engine so as to drive the upper bevel gear and the lower bevel gear to rotate reversely.
Further, the upper bevel gear includes: the upper fluted disc is horizontally arranged and a plurality of upper conical teeth are circumferentially arranged along the outer edge of the upper fluted disc; the lower bevel gear and the upper bevel gear are identical in structure and are oppositely arranged, namely the side tooth surfaces of the upper bevel gear and the lower bevel gear are in concave arc shapes and are opposite in direction.
Further, the concave radian of the side tooth surface is 145-170 degrees.
Furthermore, an observation window is detachably mounted on the side surface of the box body; and a transparent engine oil mirror is arranged on the observation window to observe the engine oil allowance in the box body.
Furthermore, an upper cover plate is detachably mounted at the top of the box body; the bottom of the box body is detachably provided with a lower cover plate; the upper cover plate and the lower cover plate are used for installing the box body on the large-load unmanned coaxial helicopter through corresponding fasteners.
Further, the high-load unmanned coaxial helicopter gearbox further comprises an oil changing assembly; the oil change assembly comprises: the oil outlet structure comprises an oil filling hole positioned on the upper cover plate, an oil outlet hole positioned on the lower cover plate and an oil drainage screw arranged at the oil outlet hole; the oil discharge screw is unscrewed, and the oil outlet is opened to flow out the engine oil in the box body.
Furthermore, the oil drain screw is made of a magnetic material to adsorb scrap iron in engine oil.
The beneficial effects of the utility model are that, the utility model discloses an unmanned coaxial helicopter gear box of heavy load drives bevel gear and lower bevel gear antiport through initiative awl tooth to realize the reversal of the upper and lower rotor realization of the unmanned coaxial helicopter of heavy load, thereby offset the reaction torque, make the helicopter flight more steady.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a high load unmanned coaxial helicopter gearbox of the present invention;
FIG. 2 is a schematic view of the mating of the lower bevel gear and the inner shaft of the high load unmanned coaxial helicopter gearbox of the present invention;
FIG. 3 is a schematic view of the mating of the upper bevel gear and the outer shaft of the high load unmanned coaxial helicopter gearbox of the present invention;
figure 4 is a transmission schematic diagram of the large load unmanned coaxial helicopter gearbox of the present invention.
In the figure:
the oil injection device comprises a box body 1, a driving bevel gear 2, an upper bevel gear 3, an upper gear disc 31, upper bevel teeth 32, a side tooth surface 321, a lower bevel gear 4, an observation window 5, an engine oil mirror 51, an upper cover plate 6, an oil injection hole 61, a lower cover plate 7, an oil outlet hole 71, an inner shaft 8 and an outer shaft 9.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-3, the present embodiment provides a high load unmanned coaxial helicopter gearbox comprising: the bevel gear transmission mechanism comprises a box body 1, a driving bevel gear 2 vertically arranged in the box body 1, an upper bevel gear 3 positioned above the driving bevel gear 2, and a lower bevel gear 4 positioned below the driving bevel gear 2; the driving bevel gear 2 is suitable for being connected with an output shaft of an engine so as to drive the upper bevel gear 3 and the lower bevel gear 4 to rotate reversely. The upper bevel gear 3 and the lower bevel gear 4 are driven to reversely rotate through the driving bevel gear, so that the upper rotor wing and the lower rotor wing of the large-load unmanned coaxial helicopter are reversely rotated, the reaction torque is offset, the helicopter flies more stably, the structure is simple, and the use is more convenient and faster.
As shown in fig. 4, the upper bevel gear 3 is connected with the lower rotor of the large-load unmanned coaxial helicopter through the outer shaft 9, the lower bevel gear 4 is connected with the upper rotor of the large-load unmanned coaxial helicopter through the inner shaft 8, when the drive bevel gear 2 rotates, the upper bevel gear 3 and the lower bevel gear 4 rotate in opposite directions, the lower bevel gear 4 drives the upper rotor to rotate through the inner shaft 8, the upper bevel gear 3 drives the lower rotor to rotate through the outer shaft 9, the upper and lower rotors rotate in opposite directions, and the counter torque is offset through the counter rotation of the upper and lower rotors, so that the helicopter flies more stably.
In the present embodiment, the upper bevel gear 3 includes: an upper toothed disc 31 arranged horizontally and a plurality of upper bevel teeth 32 arranged circumferentially along the outer edge of the upper toothed disc 31; the lower bevel gear 4 and the upper bevel gear 3 are configured in the same manner and are disposed opposite to each other, that is, the side tooth surfaces 321 of the upper bevel gear 32 and the lower bevel gear are in a concave arc shape and face opposite directions. The upper bevel teeth 32 are engaged with the drive bevel gear 2, and the lower bevel teeth are also engaged with the drive bevel gear 2, so that when the drive bevel gear 2 rotates, the upper bevel teeth 32 and the lower bevel teeth are driven to rotate in opposite directions, and the side tooth surfaces 321 of the upper bevel teeth 32 and the lower bevel teeth are in a concave arc shape, thereby ensuring better engagement effect.
In this embodiment, the concave radian of the side tooth surface 321 is 145-170 °; preferably, the side tooth surfaces 321 have a concave curvature of 160 ° in a fitting relationship with the tooth surfaces of the drive bevel gear 2, so that the meshing area can be increased.
In this embodiment, the side surface of the box body 1 is detachably provided with an observation window 5; the observation window 5 is provided with a transparent engine oil mirror 51 for observing the engine oil residue in the box body 1. The engine oil mirror 51 is made of explosion-proof glass, so that safety can be improved, and the allowance of engine oil in the box body 1 can be observed conveniently.
In this embodiment, the top of the box body 1 is detachably provided with an upper cover plate 6; the bottom of the box body 1 is detachably provided with a lower cover plate 7; the upper cover plate 7 and the lower cover plate 7 are used for installing the box body 1 on the high-load unmanned coaxial helicopter through corresponding fasteners. The gear box has enough sealing performance by arranging the upper cover plate 6 and the lower cover plate 7, so that the engine oil is prevented from dripping and leaking; and the upper cover plate 6 and the lower cover plate 7 are respectively detachably connected with the box body 1, so that the later maintenance is convenient.
In this embodiment, the high-load unmanned coaxial helicopter gearbox further comprises an oil changing assembly; the oil change assembly comprises: the oil injection hole 61 is positioned on the upper cover plate 6, the oil outlet hole 71 is positioned on the lower cover plate 7, and the oil drain screw is arranged at the oil outlet hole 71; the oil discharge screw is unscrewed, and the oil outlet hole 71 is opened to discharge the engine oil in the tank body 1. The oil injection hole 61 is provided with a screw which is detachably connected with the upper cover plate 6, when engine oil in the box body 1 is insufficient, the screw is opened to inject oil into the box body 1, and the use is convenient; when oil needs to be changed, the oil discharging screw is unscrewed, the oil outlet hole 71 is opened, and the engine oil in the box body 1 is discharged along the oil outlet hole 71.
Wherein, the oil drain screw is magnetic material to adsorb iron fillings in the machine oil. Because the driving bevel gear 2 in the gear box is meshed with the upper bevel gear 3 and the lower bevel gear 4, some scrap iron can be generated, if the scrap iron is not cleaned in time, the scrap iron can be accumulated on the meshing position of the gears, and finally, the service lives of the driving bevel gear 25, the upper bevel gear 3 and the lower bevel gear 4 are greatly reduced.
To sum up, the utility model discloses a big load unmanned coaxial helicopter gear box drives upper bevel gear 3 and lower bevel gear 4 reverse rotation through initiative awl tooth, upper bevel gear 3 is connected with the lower rotor of big load unmanned coaxial helicopter through outer axle 9, lower bevel gear 4 is connected with the upper rotor of big load unmanned coaxial helicopter through interior axle 8, when initiative bevel gear 2 rotates, upper bevel gear 3 and lower bevel gear 4 reverse rotation, then lower bevel gear 4 drives the upper rotor through interior axle 8 and rotates, upper bevel gear 3 drives the lower rotor through outer axle 9 and rotates, and upper and lower rotor reverse rotation, through the reverse rotation of upper and lower rotor, in order to offset the counter-torque, make the helicopter fly more steadily; an observation window 5 is detachably mounted on the side surface of the box body 1, and a transparent engine oil mirror 51 is arranged on the observation window 5, so that the allowance of engine oil in the box body 1 can be observed conveniently; the gear box has enough sealing performance by arranging the upper cover plate 6 and the lower cover plate 7, so that the engine oil is prevented from dripping and leaking; the upper cover plate 6 and the lower cover plate 7 are respectively detachably connected with the box body 1, so that later maintenance is convenient; the oil drain screw is made of magnetic materials and adsorbs scrap iron in engine oil so as to prolong the service life of the driving bevel gear 25, the upper bevel gear 3 and the lower bevel gear 4.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A high load unmanned coaxial helicopter gearbox comprising:
the bevel gear transmission mechanism comprises a box body, a driving bevel gear vertically arranged in the box body, an upper bevel gear positioned above the driving bevel gear, and a lower bevel gear positioned below the driving bevel gear;
the driving bevel gear is suitable for being connected with an output shaft of an engine so as to drive the upper bevel gear and the lower bevel gear to rotate reversely.
2. A high load unmanned coaxial helicopter gearbox according to claim 1,
the upper bevel gear includes: the upper fluted disc is horizontally arranged and a plurality of upper conical teeth are circumferentially arranged along the outer edge of the upper fluted disc;
the lower bevel gear and the upper bevel gear are in the same structure and are oppositely arranged, i.e.
The side tooth surfaces of the upper bevel gear and the lower bevel gear are in concave arc shapes and are opposite in direction.
3. A high load unmanned coaxial helicopter gearbox according to claim 2,
the concave radian of the side tooth surface is 145-170 degrees.
4. A high load unmanned coaxial helicopter gearbox according to claim 1,
an observation window is detachably arranged on the side surface of the box body;
and a transparent engine oil mirror is arranged on the observation window to observe the engine oil allowance in the box body.
5. A high load unmanned coaxial helicopter gearbox according to claim 1,
an upper cover plate is detachably arranged at the top of the box body;
the bottom of the box body is detachably provided with a lower cover plate;
the upper cover plate and the lower cover plate are used for installing the box body on the large-load unmanned coaxial helicopter through corresponding fasteners.
6. A high load unmanned coaxial helicopter gearbox according to claim 5,
the large-load unmanned coaxial helicopter gearbox further comprises an oil changing assembly;
the oil change assembly comprises: the oil outlet structure comprises an oil filling hole positioned on the upper cover plate, an oil outlet hole positioned on the lower cover plate and an oil drainage screw arranged at the oil outlet hole;
the oil discharge screw is unscrewed, and the oil outlet is opened to flow out the engine oil in the box body.
7. A high load unmanned coaxial helicopter gearbox according to claim 6,
the oil drain screw is made of a magnetic material and is used for adsorbing scrap iron in engine oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021369788.0U CN212616123U (en) | 2020-07-13 | 2020-07-13 | Large-load unmanned coaxial helicopter gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021369788.0U CN212616123U (en) | 2020-07-13 | 2020-07-13 | Large-load unmanned coaxial helicopter gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616123U true CN212616123U (en) | 2021-02-26 |
Family
ID=74706493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021369788.0U Expired - Fee Related CN212616123U (en) | 2020-07-13 | 2020-07-13 | Large-load unmanned coaxial helicopter gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212616123U (en) |
-
2020
- 2020-07-13 CN CN202021369788.0U patent/CN212616123U/en not_active Expired - Fee Related
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| 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: 20210226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |