CN214824111U - Adjustable speed reduction device of unmanned helicopter and unmanned helicopter - Google Patents
Adjustable speed reduction device of unmanned helicopter and unmanned helicopter Download PDFInfo
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- CN214824111U CN214824111U CN202120132349.6U CN202120132349U CN214824111U CN 214824111 U CN214824111 U CN 214824111U CN 202120132349 U CN202120132349 U CN 202120132349U CN 214824111 U CN214824111 U CN 214824111U
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Abstract
The utility model belongs to the technical field of unmanned helicopter, concretely relates to adjustable decelerator of unmanned helicopter and unmanned helicopter. The device comprises: a pinion gear fixed to an output shaft of the engine; the large gear is fixed on the transmission shaft; and a driving belt for connecting the pinion gear and the bull gear; the output shaft of the engine drives the transmission shaft to rotate through the matching of the pinion, the gearwheel and the transmission belt. The utility model has the advantages that the adjustable reduction gear of the unmanned helicopter of the utility model is driven by the matching of the small gear, the big gear and the driving belt, so that the power of the engine is output through the driving shaft after being reduced, the structure is simplified, the assembly, the maintenance and the replacement of parts are convenient, and the cost can be reduced; and the transmission of the transmission belt is convenient for adjusting the tooth number ratio of the small gear and the big gear.
Description
Technical Field
The utility model belongs to the technical field of unmanned helicopter, concretely relates to adjustable decelerator of unmanned helicopter and unmanned helicopter.
Background
During the working process of the unmanned helicopter, the rotating speed of the engine of the helicopter is high, and the rotating speed of the blades must be maintained at a low rotating speed due to shock waves and the like. Therefore, the engine power must be output to the main rotor or the tail rotor through the speed reducer.
The existing unmanned helicopter generally adopts a gear reduction box to reduce speed, and the vibration and noise of gear transmission are large, so that the flight control system is easily influenced greatly. In addition, the gears are usually required to be packaged in a gear box, lubricating oil is added, and the gear box is complex and high in sealing requirement. Meanwhile, the complex structure also makes the processing, assembling and maintaining more difficult and the cost higher.
Therefore, a reduction gear driven by a belt is needed to simplify the structure and facilitate maintenance and replacement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an unmanned helicopter adjustable speed reduction device and unmanned helicopter to simplify the structure, assembly, maintenance, the change of the part of being convenient for.
In order to solve the technical problem, the utility model provides an adjustable decelerator of unmanned helicopter, include: a pinion gear fixed to an output shaft of the engine; the large gear is fixed on the transmission shaft; and a driving belt for connecting the pinion gear and the bull gear; the output shaft of the engine drives the transmission shaft to rotate through the matching of the pinion, the gearwheel and the transmission belt.
Furthermore, the adjustable speed reduction device of the unmanned helicopter also comprises a frame fixedly connected with the engine mounting beam; the frame comprises two assembling plates which are oppositely arranged and a plurality of connecting rods of which the two ends are respectively and fixedly connected with the corresponding assembling plates; the pinion, the gearwheel and the transmission belt are all positioned between the two assembling plates.
Furthermore, the adjustable speed reduction device of the unmanned helicopter also comprises an elasticity adjusting mechanism arranged on the frame; the tightness adjusting mechanism is suitable for adjusting the tightness of the assembly of the transmission belt with the pinion and the bull gear.
Furthermore, the tightness adjusting mechanism comprises sliding chutes which are respectively positioned on the two assembling plates and are oppositely arranged, adjusting shafts of which two ends respectively extend into the corresponding sliding chutes, and adjusting wheels which are sleeved on the adjusting shafts and are rotationally connected with the adjusting shafts; the two ends of the adjusting shaft are respectively suitable for moving away from or close to the transmission belt along the sliding grooves so as to adjust the tightness of the assembly of the transmission belt, the small gear and the large gear through the adjusting wheels abutting against the transmission belt.
Furthermore, threaded holes for fastening are formed in two end faces of the adjusting shaft.
Furthermore, mounting arms extend from two side ends of the assembling plate; the mounting arm is fixed on the engine mounting beam through a vibration reduction bolt.
Furthermore, the vibration reduction bolt comprises a stud and a vibration reduction piece sleeved on the stud; one end of the stud is fixedly connected with the mounting arm, the other end of the stud is fixedly connected with the engine mounting beam through the L-shaped fixing piece, and two end faces of the vibration damping piece are respectively abutted to the mounting arm and the L-shaped fixing piece.
On the other hand, the utility model also provides an unmanned helicopter, include: the engine, the transmission shaft and the adjustable speed reducing device of the unmanned helicopter are arranged on the transmission shaft; and an output shaft of the engine drives the transmission shaft to rotate through the adjustable speed reduction device of the unmanned helicopter.
The utility model has the advantages that the adjustable reduction gear of the unmanned helicopter of the utility model is driven by the matching of the small gear, the big gear and the driving belt, so that the power of the engine is output through the driving shaft after being reduced, the structure is simplified, the assembly, the maintenance and the replacement of parts are convenient, and the cost can be reduced; and the transmission of the transmission belt is convenient for adjusting the tooth number ratio of the small gear and the big gear.
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 an adjustable reduction gear of the unmanned helicopter of the present invention;
fig. 2 is an installation schematic diagram of the adjustable reduction gear of the unmanned helicopter of the present invention;
fig. 3 is a schematic view of a tightness adjusting mechanism of the adjustable reduction gear of the unmanned helicopter of the present invention;
fig. 4 is a fixed schematic view of the mounting arm of the adjustable reduction gear of the unmanned helicopter of the present invention.
In the figure:
the engine 110, the transmission shaft 120, and the engine mounting beam 130;
a pinion gear 210, a bull gear 220, a drive belt 230;
the structure comprises a frame 300, a mounting plate 310, a mounting arm 311, a connecting rod 320, a damping bolt 330, a stud 331, a damping piece 332 and an L-shaped fixing piece 340;
the tightness adjusting mechanism 400, the chute 410, the adjusting shaft 420, the threaded hole 421 and the adjusting wheel 430.
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 and fig. 2, the present embodiment provides an adjustable deceleration device for an unmanned helicopter, including: a pinion gear 210 fixed to an output shaft of the engine 110; a large gear 220 fixed on the transmission shaft 120; and a driving belt 230 for connecting the pinion gear 210 and the bull gear 220; wherein the output shaft of the motor 110 drives the transmission shaft 120 to rotate through the cooperation of the small gear 210, the large gear 220 and the transmission belt 230.
In this embodiment, the adjustable reduction gear of the unmanned helicopter is driven by the cooperation of the pinion 210, the gearwheel 220 and the driving belt 230, so that the power of the engine 110 is output through the transmission shaft 120 after being reduced, the structure is simplified, the assembly, the maintenance and the replacement of parts are facilitated, and the cost can be reduced.
In this embodiment, the driving belt 230 is used for transmission, so that the adjustable length of the driving belt 230 can be fully achieved, the tooth number ratio of the small gear 210 and the large gear 220 can be adjusted conveniently, that is, the small gear 210 can be matched with the large gears 220 with different tooth numbers, and the adaptability is stronger.
In this embodiment, preferably, the adjustable deceleration device of the unmanned helicopter further comprises a frame 300 fixedly connected with the engine mounting beam 130; the frame 300 comprises two assembling plates 310 which are oppositely arranged and a plurality of connecting rods 320, two ends of each connecting rod are fixedly connected with the corresponding assembling plate 310; the pinion gear 210, the bull gear 220, and the drive belt 230 are located between two mounting plates 310.
In this embodiment, the frame 300 is formed by two assembling plates 310 and a plurality of connecting rods 320, and can be used for protecting and assembling the pinion gear 210, the bull gear 220 and the transmission belt 230; and, compared with a gear box, the frame structure is more cost-saving and simpler in structure.
The length of the transmission belt 230 is increased or decreased due to the change of temperature or the performance of the transmission belt, and the like, and preferably, as shown in fig. 3, the adjustable speed reduction device of the unmanned helicopter further comprises a tightness adjusting mechanism 400 mounted on the frame 300; the tightness adjusting mechanism 400 is suitable for adjusting the tightness of the assembly of the transmission belt 230 with the pinion gear 210 and the bull gear 220.
As a preferred embodiment of this embodiment, the tightness adjusting mechanism 400 includes two sliding slots 410 respectively located on the two assembling plates 310 and oppositely disposed, an adjusting shaft 420 with two ends respectively extending into the corresponding sliding slots 410, and an adjusting wheel 430 sleeved on the adjusting shaft 420 and rotatably connected with the adjusting shaft 420; the two ends of the adjusting shaft 420 are respectively adapted to move away from or close to the driving belt 230 along the sliding slots 410, so as to adjust the tightness of the assembly of the driving belt 230 with the small gear 210 and the large gear 220 by means of the adjusting wheel 430 abutting against the driving belt 230.
In this embodiment, optionally, both end surfaces of the adjusting shaft 420 are provided with fastening threaded holes 421, and both ends of the adjusting shaft 420 can be fixedly connected to the corresponding assembling plates 310 through fasteners after adjustment is completed.
In one application scenario, when the belt 230 needs to be tightened, the adjusting shaft 420 is close to the belt 230 and is abutted against the belt 230 through the adjusting wheel 430; when the transmission belt 230 needs to be loosened, the adjusting shaft 420 is moved away from the transmission belt 230, and the transmission belt 230 can be loosened; the tightness adjusting mechanism 400 is simple in structure and convenient to adjust, and the adjusting shaft 420 can be fastened on the assembling plate 310 through screws and is convenient to operate.
Since great vibration is generated during the operation of the engine, in order to reduce the influence of the vibration on the reduction gear, as shown in fig. 2, mounting arms 311 are extended from both side ends of the mounting plate 310; the mounting arm 311 is secured to the engine mounting beam 130 by a vibration dampening bolt 330.
In one application scenario, the engine mounting beams 130 are two parallel beams, and the frame 300 is mounted between the two engine mounting beams 130; optionally, mounting arms 311 extend from both side ends of the mounting plate 310, and the two mounting arms 311 are respectively fixed to the corresponding engine mounting beam 130 by vibration damping bolts 330.
As shown in fig. 4, in the present embodiment, optionally, the damping bolt 330 includes a stud 331 and a damping member 332 sleeved on the stud 331; one end of the stud 331 is fixedly connected with the mounting arm 311, the other end is fixedly connected with the engine mounting beam 130 through an L-shaped fixing piece 340, and two end surfaces of the vibration damping piece 332 are respectively abutted against the mounting arm 311 and the L-shaped fixing piece 340.
In this embodiment, the L-shaped mount may reduce the spacing between the mounting arm 311 and the engine mounting beam 130, which may reduce the size of the helicopter; the L-shaped fixing piece can cover the assembly range of the engine mounting beam 130, the size of the engine mounting beam 130 does not need to be increased, and cost is reduced; the damping member 332 may be a rubber material.
Example 2
On the basis of embodiment 1, the present embodiment provides an unmanned helicopter, including: the engine, the transmission shaft and the adjustable speed reducing device of the unmanned helicopter in the embodiment 1; and an output shaft of the engine drives the transmission shaft to rotate through the adjustable speed reduction device of the unmanned helicopter.
In summary, the adjustable reduction gear of the unmanned helicopter transmits through the matching of the pinion 210, the gearwheel 220 and the transmission belt 230, so that the power of the engine 110 is output through the transmission shaft 120 after being reduced, the structure is simplified, the assembly, the maintenance and the replacement are convenient, and the cost can be reduced; the transmission belt 230 is used for transmission, so that the adjustable length of the transmission belt 230 can be fully achieved, the tooth number matching of the small gear 210 and the large gear 220 can be conveniently adjusted, namely the small gear 210 can be matched with the large gears 220 with different tooth numbers, and the adaptability is stronger; compared with a gear box, the frame structure saves more cost and has simpler structure; the tightness adjusting mechanism 400 is suitable for adjusting the tightness of the assembly of the transmission belt 230 with the pinion gear 210 and the bull gear 220, and is convenient to assemble and adjust; the mounting arms 311 extend from both side ends of the mounting plate 310, and the mounting arms 311 are fixed to the engine mounting beam 130 by the damper bolts 330, so that the influence of vibration on the reduction gear can be reduced.
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 otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected.
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 (8)
1. An adjustable speed reduction device of an unmanned helicopter is characterized by comprising:
a pinion gear (210) fixed to an output shaft of the engine (110);
the large gear (220) is fixed on the transmission shaft (120); and
a transmission belt (230) for connecting the pinion gear (210) and the bull gear (220); wherein
An output shaft of the engine (110) drives the transmission shaft (120) to rotate through the matching of the pinion (210), the bull gear (220) and the transmission belt (230).
2. The adjustable deceleration device of unmanned helicopter of claim 1,
the adjustable speed reduction device of the unmanned helicopter further comprises a frame (300) fixedly connected with the engine mounting beam (130);
the frame (300) comprises two assembling plates (310) which are oppositely arranged and a plurality of connecting rods (320) of which two ends are respectively and fixedly connected with the corresponding assembling plates (310);
the pinion (210), the bull gear (220) and the drive belt (230) are located between the two mounting plates (310).
3. The adjustable deceleration device of unmanned helicopter of claim 2,
the adjustable speed reduction device of the unmanned helicopter also comprises a tightness adjusting mechanism (400) arranged on the frame (300);
the tightness adjusting mechanism (400) is suitable for adjusting the tightness of the assembly of the transmission belt (230), the pinion (210) and the bull gear (220).
4. The adjustable deceleration device of unmanned helicopter of claim 3,
the tightness adjusting mechanism (400) comprises sliding grooves (410) which are respectively positioned on the two assembling plates (310) and are oppositely arranged, adjusting shafts (420) of which two ends respectively extend into the corresponding sliding grooves (410), and adjusting wheels (430) which are sleeved on the adjusting shafts (420) and are rotatably connected with the adjusting shafts (420);
the two ends of the adjusting shaft (420) are respectively suitable for moving away from or close to the transmission belt (230) along the sliding groove (410) so as to adjust the tightness of the assembly of the transmission belt (230) with the small gear (210) and the large gear (220) through an adjusting wheel (430) abutting against the transmission belt (230).
5. The adjustable deceleration device of unmanned helicopter of claim 4,
and threaded holes (421) for fastening are formed in the two end faces of the adjusting shaft (420).
6. The adjustable deceleration device of unmanned helicopter of claim 2,
mounting arms (311) extend from two side ends of the assembling plate (310);
the mounting arm (311) is fixed on the engine mounting beam (130) through a vibration damping bolt (330).
7. The adjustable deceleration device of unmanned helicopter of claim 6,
the vibration damping bolt (330) comprises a stud (331) and a vibration damping piece (332) sleeved on the stud (331);
one end of the stud (331) is fixedly connected with the mounting arm (311), the other end of the stud is fixedly connected with the engine mounting beam (130) through an L-shaped fixing piece (340), and two end faces of the vibration damping piece (332) are respectively abutted against the mounting arm (311) and the L-shaped fixing piece (340).
8. An unmanned helicopter, comprising:
an engine, a transmission shaft and an adjustable deceleration device of the unmanned helicopter according to any one of claims 1 to 7;
and an output shaft of the engine drives the transmission shaft to rotate through the adjustable speed reduction device of the unmanned helicopter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120132349.6U CN214824111U (en) | 2021-01-18 | 2021-01-18 | Adjustable speed reduction device of unmanned helicopter and unmanned helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120132349.6U CN214824111U (en) | 2021-01-18 | 2021-01-18 | Adjustable speed reduction device of unmanned helicopter and unmanned helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214824111U true CN214824111U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120132349.6U Active CN214824111U (en) | 2021-01-18 | 2021-01-18 | Adjustable speed reduction device of unmanned helicopter and unmanned helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214824111U (en) |
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2021
- 2021-01-18 CN CN202120132349.6U patent/CN214824111U/en active Active
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