CN218510044U - Self-disconnection clutch for unmanned helicopter - Google Patents
Self-disconnection clutch for unmanned helicopter Download PDFInfo
- Publication number
- CN218510044U CN218510044U CN202221706697.0U CN202221706697U CN218510044U CN 218510044 U CN218510044 U CN 218510044U CN 202221706697 U CN202221706697 U CN 202221706697U CN 218510044 U CN218510044 U CN 218510044U
- Authority
- CN
- China
- Prior art keywords
- clutch
- shaft
- shell
- spline shaft
- sleeve
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model relates to a helicopter spare part technical field specifically is an unmanned helicopter is with connecting clutch certainly, include: the spline shaft, the shell, the cover plate, the sleeve and the transmission shaft are arranged on the shell; the shell is fixed at the upper end of the spline shaft, a movable cavity is formed between the shell and the outer surface of the spline shaft, a spring is arranged in the movable cavity, and a wedge block is connected to the spring; the transmission shaft is connected in the sleeve through a plurality of groups of clutch rollers, and the transmission shaft and the spline shaft are located on the same axis. This unmanned helicopter is with from disconnect clutch relies on the centrifugal force that produces when the moment of torsion transmission to realize the separation and reunion between integral key shaft and the transmission shaft, has improved unmanned helicopter's security, has reduced manual operation unmanned aerial vehicle's the degree of difficulty to and when unmanned helicopter loses power free fall, can make main rotor take place the reversal and be connected the disconnection with the engine, guarantee the safety landing of helicopter.
Description
Technical Field
The utility model relates to a helicopter spare part technical field specifically is an unmanned helicopter is with from clutch that disconnects.
Background
The clutch is an important part in the design process of the helicopter, most of domestic unmanned helicopters use electric transmission to program to complete clutch at present, when a control circuit has problems, the clutch can not normally complete work, the safety factor of the unmanned helicopter is reduced, the clutch has large structure volume, large waste resistance area of a machine body, more energy consumption and incapability of realizing automatic clutch, and the operation radius of the unmanned helicopter is reduced. In view of this, we propose a self-disconnect clutch for an unmanned helicopter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an unmanned helicopter is with connecting clutch certainly to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a self-disconnect clutch for an unmanned helicopter comprising: the spline shaft, the shell, the cover plate, the sleeve and the transmission shaft are arranged on the shell; the shell is fixed at the upper end of the spline shaft, a movable cavity is formed between the shell and the outer surface of the spline shaft, a spring is arranged in the movable cavity, one end of the spring is fixed on the outer surface of the spline shaft, and the other end of the spring is connected with a wedge block; the sleeve is fixed on the top surface of the shell through the cover plate; the transmission shaft is connected in the sleeve through a plurality of groups of clutch rollers, and the transmission shaft and the spline shaft are positioned on the same axis.
Preferably, the outer surface of the transmission shaft is provided with a plurality of groups of vertical sliding grooves, each sliding groove comprises a shallow groove and a deep groove, when the clutch roller is located in the shallow groove, the outer surface of the clutch roller is attached to the inner wall of the sleeve, and when the clutch roller is located in the deep groove, the outer surface of the clutch roller is separated from the inner wall of the sleeve.
Preferably, the bottom end of the spline shaft is provided with a coupling for connecting an output end of an engine.
Preferably, the inner wall of the shell is further provided with a clutch gasket which is in contact with the wedge-shaped block.
Preferably, the cover plate is fixed on the housing through bolts, and the sleeve is fixed on the cover plate through bolts.
Preferably, the top end of the transmission shaft is provided with a gear shaft for connecting a helicopter hub.
Compared with the prior art, the beneficial effects of the utility model are that: this unmanned helicopter is with connecting clutch certainly relies on the centrifugal force that produces when the moment of torsion transmission to realize the separation and reunion between integral key shaft and the transmission shaft, has improved unmanned helicopter's security, has reduced manual operation unmanned aerial vehicle's the degree of difficulty to and when unmanned helicopter loses power free fall, can make main rotor take place the reversal and be connected the disconnection with the engine, guarantee the safety of helicopter and descend.
Drawings
FIG. 1 is a sectional view of the overall structure of the present invention;
fig. 2 is a sectional view of the joint structure of the middle transmission shaft and the sleeve of the present invention.
In the figure: 1. a spline shaft; 11. a coupling; 2. a housing; 21. a movable cavity; 22. a spring; 23. a wedge block; 24. a clutch washer; 3. a cover plate; 4. a sleeve; 5. a drive shaft; 51. a clutch roller; 52. a chute; 521. shallow-groove; 522. deep grooves; 53. a gear shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate. In the description of the present invention, "plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution:
a self-disconnect clutch for an unmanned helicopter comprising: the spline shaft comprises a spline shaft 1, a shell 2, a cover plate 3, a sleeve 4 and a transmission shaft 5; the shell 2 is fixed at the upper end of the spline shaft 1, a movable cavity 21 is formed between the shell 2 and the outer surface of the spline shaft 1, a spring 22 is arranged in the movable cavity 21, one end of the spring 22 is fixed on the outer surface of the spline shaft 1, and the other end of the spring 22 is connected with a wedge block 23; the sleeve 4 is fixed on the top surface of the shell 2 through the cover plate 3; the transmission shaft 5 is connected in the sleeve 4 through a plurality of sets of clutch rollers 51, and the transmission shaft 5 and the spline shaft 1 are positioned on the same axis. Therefore, in the self-disconnecting clutch, under the condition that an engine rotates at a high speed, the engine torque transmitted from a helicopter engine is received through the spline shaft 1, centrifugal force is generated in the rotating process of the spline shaft 1 to enable the spring 22 to be pulled up after being stressed, the wedge block 23 is attached to the inner wall of the shell 2 and transmits the torque to the cover plate 3 and the sleeve 4, the sleeve 4 drives the transmission shaft 5 to rotate through the clutch roller 51 when rotating under the action of the torque, so that the transmission shaft 5 can drive the helicopter hub to rotate, meanwhile, under the condition that the engine rotates at a low speed, the spring 22 retracts the wedge block 23 by utilizing self elasticity, so that the wedge block 23 is separated from the inner wall of the shell 2, and at the moment, the helicopter hub and the spline shaft 1 are in a disconnected state, and the clutch effect is realized.
In this embodiment, the outer surface of the transmission shaft 5 is provided with a plurality of sets of vertical sliding grooves 52, each sliding groove 52 includes a shallow groove 521 and a deep groove 522, when the clutch roller 51 is located in the shallow groove 521, the outer surface of the clutch roller 51 is attached to the inner wall of the sleeve 4, and when the clutch roller 51 is located in the deep groove 522, the outer surface of the clutch roller 51 is separated from the inner wall of the sleeve 4. Therefore, under the condition that the engine rotates at a low speed, the spline shaft 1 and the transmission shaft 5 are in a disconnection state, when the helicopter loses a dynamic free-fall body, the main rotor rotates reversely under the influence of air resistance, the corresponding clutch roller 51 moves anticlockwise into the shallow groove 521, so that the transmission shaft 5 and the sleeve 4 are directly disconnected, and the main rotor rotates reversely in an acceleration mode in the free-fall body to obtain enough lift force to safely land.
It is worth mentioning that the bottom end of the spline shaft 1 is provided with a coupling 11 for connecting the output end of the engine. The spline shaft 1 is convenient to be connected with the torque output end of a helicopter engine through a coupling 11.
Further, the inner wall of the housing 2 is provided with a clutch washer 24 contacting the wedge 23. The friction force between the wedge-shaped block 23 and the inner wall of the shell 2 is increased through the clutch gasket 24, and the torque transmission efficiency of the spline shaft 1 in the rotating process is improved.
Furthermore, the cover plate 3 is fixed to the housing 2 by bolts, and the sleeve 4 is fixed to the cover plate 3 by bolts. The stability of being convenient for connect between each structure, and dismouting maintenance is convenient.
In particular, the top end of the drive shaft 5 is provided with a gear shaft 53 for connection to a helicopter hub. The transmission shaft 5 is conveniently connected with the helicopter hub through a gear shaft 53, so as to drive the main rotor on the hub to rotate.
The self-disconnecting clutch for the unmanned helicopter of the embodiment is used:
under the condition that the engine rotates at a high speed, the engine torque transmitted from the helicopter engine is received through the spline shaft 1, centrifugal force is generated in the rotation process of the spline shaft 1 to enable the spring 22 to be pulled up after being stressed, the wedge-shaped block 23 is attached to the inner wall of the shell 2 to transmit the torque to the cover plate 3 and the sleeve 4, and the sleeve 4 drives the transmission shaft 5 to rotate through the clutch roller 51 when rotating under the action of the torque, so that the transmission shaft 5 can drive the helicopter hub to rotate;
under the condition that the engine rotates at a low speed, the spring 22 retracts the wedge block 23 by utilizing the elasticity of the spring, so that the wedge block 23 is separated from the inner wall of the shell 2, at the moment, the helicopter hub and the spline shaft 1 are in a disconnection state, the main rotor on the hub is still, when the helicopter loses a dynamic free falling body, the main rotor reverses under the influence of air resistance, the corresponding clutch roller 51 moves anticlockwise into the shallow groove 521, the transmission shaft 5 is directly disconnected with the sleeve 4, and the main rotor realizes accelerated reversal when the main rotor freely falls, so that enough lift force is obtained to safely land;
therefore, this from breaking and reunion ware relies on centrifugal force that produces when the moment of torsion transmission realizes the separation and reunion between integral key shaft 1 and the transmission shaft 5, has improved unmanned helicopter's security, has reduced manual operation unmanned aerial vehicle's the degree of difficulty to and when unmanned helicopter loses power free fall, can make main rotor take place the reversal and be connected the disconnection with the engine, guarantee the safety of helicopter and descend.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A self-disconnect clutch for an unmanned helicopter, comprising: the spline shaft comprises a spline shaft (1), a shell (2), a cover plate (3), a sleeve (4) and a transmission shaft (5);
the shell (2) is fixed at the upper end of the spline shaft (1), a movable cavity (21) is formed between the shell (2) and the outer surface of the spline shaft (1), a spring (22) is arranged in the movable cavity (21), one end of the spring (22) is fixed on the outer surface of the spline shaft (1), and the other end of the spring (22) is connected with a wedge-shaped block (23);
the sleeve (4) is fixed on the top surface of the shell (2) through the cover plate (3);
the transmission shaft (5) is connected in the sleeve (4) through a plurality of groups of clutch rollers (51), and the transmission shaft (5) and the spline shaft (1) are located on the same axis.
2. The self-make-and-break clutch for the unmanned helicopter according to claim 1, characterized in that the outer surface of the transmission shaft (5) is provided with a plurality of sets of vertical sliding grooves (52), the sliding grooves (52) comprise a shallow groove (521) and a deep groove (522), when the clutch roller (51) is positioned in the shallow groove (521), the outer surface of the clutch roller (51) is attached to the inner wall of the sleeve (4), and when the clutch roller (51) is positioned in the deep groove (522), the outer surface of the clutch roller (51) is separated from the inner wall of the sleeve (4).
3. The self-disconnect clutch for an unmanned helicopter according to claim 1, characterized in that the bottom end of the spline shaft (1) is provided with a coupling (11) for connecting an engine output.
4. The self-disconnect clutch for an unmanned helicopter of claim 1 characterized in that the inner wall of the housing (2) is further provided with a clutch washer (24) in contact with the wedge block (23).
5. The self-disconnect clutch for the unmanned helicopter of claim 1 characterized in that the cover plate (3) is bolted to the housing (2) and the sleeve (4) is bolted to the cover plate (3).
6. The self-disconnect clutch for an unmanned helicopter of claim 1 characterized in that the top end of the drive shaft (5) is provided with a gear shaft (53) for connecting to a helicopter hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221706697.0U CN218510044U (en) | 2022-07-04 | 2022-07-04 | Self-disconnection clutch for unmanned helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221706697.0U CN218510044U (en) | 2022-07-04 | 2022-07-04 | Self-disconnection clutch for unmanned helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218510044U true CN218510044U (en) | 2023-02-21 |
Family
ID=85207480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221706697.0U Active CN218510044U (en) | 2022-07-04 | 2022-07-04 | Self-disconnection clutch for unmanned helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218510044U (en) |
-
2022
- 2022-07-04 CN CN202221706697.0U patent/CN218510044U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218510044U (en) | Self-disconnection clutch for unmanned helicopter | |
| CN103032487B (en) | A kind of centrifugal clutch | |
| CN115095614A (en) | Self-disconnection clutch for unmanned helicopter | |
| CN212667652U (en) | Tandem type electric double-rotor helicopter | |
| CN211820469U (en) | Gear assembly and transmission | |
| CN205114313U (en) | Mechanical type scraper conveyor soft start transmission | |
| CN210510223U (en) | Bearing assembly structure | |
| CN210240458U (en) | Coaxial planetary gear reducer | |
| CN203014583U (en) | Novel elastic connector of motor | |
| CN211791217U (en) | Magnetic speed reducer | |
| CN210318249U (en) | Equidistant cam centrifugal bidirectional automatic clutch | |
| CN209943372U (en) | Friction type soft start energy-saving safety coupling | |
| CN204632611U (en) | Gear rotating bidirectional clutch device | |
| CN202790213U (en) | Oil pumping unit soft start coupler | |
| CN202565093U (en) | Gravity centrifugation magnetic clutch used for low starting current motor | |
| CN207892511U (en) | A kind of motor of rolling shutter door opens Door by Hand system | |
| CN201896882U (en) | Clutch | |
| CN218082465U (en) | Hand-held type lithium electricity spanner | |
| CN205350243U (en) | Paper tube detects uses transmission | |
| CN218586960U (en) | Hydrogen circulating pump motor rotor structure for breaking ice by using rotation inertia | |
| CN211371063U (en) | Shaft coupling convenient to dismantle | |
| CN221081087U (en) | Novel structure electric ship propeller brushless motor | |
| CN220884690U (en) | Motorcycle clutch assembly | |
| CN218325886U (en) | Thorough-separation single-plate clutch suitable for agricultural machinery | |
| CN212868328U (en) | Automobile speed reduction one-way clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |