CN212501060U

CN212501060U - Unmanned aerial vehicle afterbody transmission

Info

Publication number: CN212501060U
Application number: CN202021079528.XU
Authority: CN
Inventors: 王鑫业
Original assignee: Qingdao Shitian Innovation Aviation Technology Co Ltd
Current assignee: Qingdao Shitian Innovation Aviation Technology Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-02-09
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses an unmanned aerial vehicle tail transmission device, which relates to the technical field of unmanned helicopters, and a pipe body is provided with a through hole; the support frame, the fixed setting of support frame is equipped with the ring channel in the through-hole of body, the outside of support frame, and the elastic ring sets up in the ring channel of support frame, and at least three location bearing's outer lane sets up on the support frame, and the transmission shaft setting is in location bearing, and the ratio scope of the axle length of transmission shaft and external diameter length is 100 ~ 200. The utility model has the advantages that the transmission device directly realizes the locking and fixing of the slender rotating shaft through rotation, thus effectively fixing the slender rotating shaft, preventing looseness, playing the role of simple and firm installation and ensuring good rotating effect in the shaft transmission process; the manufacturing process is simple, the manufacturing cost is low, and the condition that vibration is generated in the transmission process of the empennage system of the unmanned helicopter is improved.

Description

Unmanned aerial vehicle afterbody transmission

Technical Field

The utility model relates to an unmanned helicopter technical field, especially an unmanned aerial vehicle afterbody transmission.

Background

Along with modern development, unmanned helicopters are widely popularized, and unmanned helicopters are paid more attention to people by virtue of the characteristics of simple structure, convenient operation and control, higher safety and the like, are suitable for various industries such as agriculture, geology, emergency and disaster relief, video shooting, fire fighting, city management, artificial precipitation and the like, and have wide application.

The unmanned aerial vehicle mainly comprises engine, gearbox, frame, rotor section, fin system and flight control system. The fin system usually can adopt synchronous belt drive's mode to carry out power transmission, this is because the fin system needs very long transmission system, but the hold-in range is at high-speed moving in-process unlubricated to can phenomenons such as high temperature, seriously choose can fracture, the veneer, and the centre-to-centre spacing when the installation is extremely strict, and, unmanned aerial vehicle takes off the back, receives the influence of certain factor, the fin system can be extremely unstable, influence the safety problem of unmanned helicopter, the simultaneous processing technology is complicated, high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is, change the transmission mode of fin system, improve unmanned helicopter's security, designed an unmanned aerial vehicle afterbody transmission.

The utility model provides a technical scheme that its technical problem adopted is: an unmanned aerial vehicle tail transmission device, comprising: the pipe body is provided with a through hole; the supporting frame is fixedly arranged in the through hole of the pipe body, and an annular groove is formed in the outer side of the supporting frame; the elastic ring is arranged in the annular groove of the support frame; the outer rings of the positioning bearings are arranged on the supporting frame; the transmission shaft, the transmission shaft sets up in the locating bearing, the ratio range of the axial length of transmission shaft and external diameter length is 100 ~ 200.

Further, the pipe body is a straight round pipe or a straight square pipe.

Furthermore, the middle part of the pipe body is provided with a rotating cavity.

Further, the material of the pipe body is carbon fiber.

Furthermore, the elastic ring is a rubber ring.

Furthermore, the support frame is a hollow frame.

Further, the number of the supporting frames is four.

Further, the support frame in the outermost side sets up the both ends at the body.

Further, the positioning bearing is a self-aligning bearing.

The utility model has the advantages that: the transmission device directly realizes locking and fixing of the slender rotating shaft through rotation, so that the slender rotating shaft can be effectively fixed, looseness is prevented, the effect of simple and firm installation is achieved, and a good rotating effect can be ensured in the shaft transmission process; the manufacturing process is simple, the manufacturing cost is low, and the condition that vibration is generated in the transmission process of the empennage system of the unmanned helicopter is improved.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic structural view of a transmission;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

fig. 4 is a sectional view of the internal structure of the transmission.

In the above figures, 1, a tube body; 2. a support frame; 3. an elastic ring; 4. positioning the bearing; 5. a drive shaft.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

The utility model provides an unmanned aerial vehicle afterbody transmission, includes body 1, support frame 2, elastic ring 3, at least three location bearing 4 and transmission shaft 5.

The body 1 is equipped with the through-hole, and support frame 2 is fixed to be set up in the through-hole of body 1, and is preferred, and the material of body 1 is carbon fiber material, improves stability. The support frame 2 is a hollow frame to reduce weight.

The method for arranging the support frame 2 in the pipe body 1 is that an annular groove is arranged on the outer side of the support frame 2, and the elastic ring 3 is arranged in the annular groove of the support frame 2. Because the elastic ring 3 has ductility, can be made of rubber, when installing it in the body 1, the elastic ring 3 is outside expansion, fixes the elastic ring 3 in the body 1 to play the effect of tensioning support frame 2, and, elastic ring 3 can also play the antivibration effect.

The outer ring of the positioning bearing 4 is arranged on the support frame 2, the transmission shaft 5 is arranged in the positioning bearing 4, and the range of the ratio of the shaft length of the transmission shaft 5 to the outer diameter length of the transmission shaft is 100-200. The ratio range is one of the core points of the application, and as the transmission is long-distance transmission and common belt transmission, the applicant adopts an unexpected long shaft for transmission, so that the problem can be better solved. The elongated tube corresponds to the ratio range. Due to the large ratio, at least three positioning bearings 3 are used to maintain stability, and in fig. 1 and 2, four positioning bearings 3 are used. Further, the support frame 2 in the outermost side sets up at the both ends of body 1, is favorable to keeping intraductal clean. As for the positioning bearing 3, it is preferable to use a self-aligning bearing because there is a certain error inevitably in the process of processing each component and mounting, and the error inevitably affects the mounting of the transmission shaft 4, and the self-aligning bearing can alleviate the error and allow a certain error.

The pipe body 1 mainly plays a supporting role, and especially plays a crucial role in an unmanned helicopter, namely a tail pipe, and the pipe body 1 is an important bridge for mutually building a fuselage and a tail wing. The shape of the pipe body 1 can be a common straight round pipe or a straight square pipe. Further, the transmission shaft 4 is not necessarily a unitary shaft, and may have a certain shape, for example, a rotation chamber is provided in the middle of the pipe body 1, and the transmission shaft 4 rotates in the non-linear pipe body 1.

When the transmission device is installed, the support frame 2 and the centering bearing 3 are fixed firstly, then the elastic ring 3 is placed in the annular groove on the outer side of the support frame 2, and the support frame 2 and the elastic ring 3 are integrally pushed into the pipe body 1. The two ends of the transmission shaft 5 are respectively connected with an input power device and an output power device, so that the power transmission is realized.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for those skilled in the art that the technical solutions described in the above embodiments can be modified or some technical features can be replaced equivalently as long as there is no structural conflict; and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. An unmanned aerial vehicle afterbody transmission, its characterized in that includes:

the pipe comprises a pipe body (1), wherein the pipe body (1) is provided with a through hole;

the supporting frame (2) is fixedly arranged in the through hole of the pipe body (1), and an annular groove is formed in the outer side of the supporting frame (2);

the elastic ring (3) is arranged in the annular groove of the support frame (2);

the outer ring of each positioning bearing (4) is arranged on the corresponding support frame (2);

the transmission shaft (5), transmission shaft (5) set up in locating bearing (4), the ratio range of the axle length of transmission shaft (5) and external diameter length is 100 ~ 200.

2. The unmanned aerial vehicle tail transmission device of claim 1, wherein the pipe body (1) is a straight round pipe or a straight square pipe.

3. The unmanned aerial vehicle tail transmission device of claim 1, characterized in that the middle of the pipe body (1) is provided with a rotating cavity.

4. The unmanned aerial vehicle tail transmission device of claim 1, wherein the material of the pipe body (1) is carbon fiber.

5. The unmanned aerial vehicle tail transmission device of claim 1, wherein the elastic ring (3) is a rubber ring.

6. The unmanned aerial vehicle tail transmission device of claim 1, characterized in that the support frame (2) is a hollow frame.

7. Unmanned aerial vehicle tail transmission of claim 1, characterized in that the number of support frames (2) is four.

8. The unmanned aerial vehicle tail transmission device of claim 1, characterized in that, the support frame (2) of the outermost side sets up at the both ends of body (1).

9. The unmanned aerial vehicle tail transmission device of claim 1, wherein the locating bearing (4) is a self-aligning bearing.