CN214752580U

CN214752580U - Helicopter tail reducer demonstration model teaching aid

Info

Publication number: CN214752580U
Application number: CN202121313613.2U
Authority: CN
Inventors: 李汉东; 钱学文; 尹志文
Original assignee: Shenzhen Boer Creative Culture Development Co ltd
Current assignee: Shenzhen Boer Creative Culture Development Co ltd
Priority date: 2021-06-12
Filing date: 2021-06-12
Publication date: 2021-11-16
Anticipated expiration: 2031-06-12

Abstract

The utility model discloses a helicopter tail reduction gear demonstration model teaching aid relates to teaching demonstration equipment technical field, including fuselage, engine shaft, main reducer, main shaft and middle-end reduction gear, the slant is provided with the tail staff in the afterbody of fuselage, tail staff one end and middle-end retarder connection, tail staff other end fixedly connected with third bevel gear, third bevel gear side meshing is connected with the fourth helical gear, fourth bevel gear side fixedly connected with empennage axle, empennage axle side fixedly connected with fin body. The utility model discloses according to the theory of operation of helicopter tail rotor and tail reduction gear, imitative tail rotor reduction gear model teaching aid connects main reducer and middle part reduction gear with the main shaft, two reduction gear simultaneous workings under the drive of motor to drive the tail reduction gear simultaneously, demonstrate the function state of whole helicopter in actual conditions.

Description

Helicopter tail reducer demonstration model teaching aid

Technical Field

The utility model relates to a teaching demonstration equipment technical field especially relates to a helicopter tail reduction gear demonstration model teaching aid.

Background

The helicopter tail rotor is an indispensable part in the operation of the helicopter, and is a component for balancing the reaction torque and performing heading control on the helicopter. The rotating tail rotor is equivalent to a vertical stabilizing plane and can stabilize the heading of the helicopter. Although the tail rotor functions differently than a rotor, they are both aerodynamic in rotation and operate in an asymmetric airflow during forward flight, and thus the tail rotor structure has many similarities to the rotor structure. The tail rotor has the structural forms of a seesaw type, a universal joint type, a hinge type, a bearingless type, a duct tail rotor type and the like. The previous versions are similar to those discussed in the rotor version, except that the articulated tail rotor is generally not provided with a shimmy hinge. Over the 70 s, bearingless tail rotors (including those with crossed arrangements) and "ducted tail rotors" have been developed. The tail rotor of the duct is arranged in the duct of the tail oblique beam of the fuselage. The existing teaching demonstration tools do not have a teaching aid professional for the motion dynamics of various internal parts in the helicopter, including the description and the popular science of a tail reducer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a helicopter tail reducer demonstration model teaching aid.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a helicopter tail reduction gear demonstration model teaching aid, includes the fuselage and sets up the engine in the fuselage, the output of engine is equipped with the engine shaft, be equipped with the main reduction gear who is connected with the engine shaft in the fuselage, be equipped with the main shaft of being connected with main reduction gear in the fuselage, the one end that main reduction gear was kept away from to the main shaft is connected with the middle-end reduction gear, the slant is provided with the tail staff in the afterbody of fuselage, tail staff one end with middle-end retarder connection, tail staff other end fixedly connected with third bevel gear, third bevel gear side meshing is connected with the fourth helical gear, fourth bevel gear side fixedly connected with empennage axle, the empennage axle rotates with the fuselage to be connected, the empennage axle extends to the outer one end fixedly connected with fin body of fuselage.

As a still further scheme of the utility model, the middle-end reduction gear includes shell, first connecting axle, first helical gear, second helical gear and second connecting axle, the shell sets up in the fuselage, the shell internal rotation is connected with first connecting axle, first connecting axle and the one end fixed connection who extends to the main shaft in the shell, the first connecting axle other end and first helical gear fixed connection, first helical gear is connected with the meshing of second helical gear, the second helical gear with second connecting axle fixed connection, the second connecting axle rotates with the shell to be connected, the second connecting axle and the one end fixed connection who extends to the tail skew axle in the shell.

As a further proposal, the first connecting shaft and the second connecting shaft are provided with a first bearing fixedly connected with the shell.

As a further proposal of the utility model, one of the tail inclined shafts away from the third bevel gear is provided with a second bearing.

As a further proposal, the third bearing is arranged on one side of the tail oblique shaft and the tail wing shaft which are close to each other.

The embodiment of the utility model provides a pair of helicopter tail reduction gear demonstration model teaching aid, beneficial effect is:

the utility model discloses according to the theory of operation of helicopter tail rotor and tail reduction gear, imitative tail rotor reduction gear model teaching aid connects main reducer and middle part reduction gear with the main shaft, two reduction gear simultaneous workings under the drive of motor to drive the tail reduction gear simultaneously, demonstrate the function state of whole helicopter in actual conditions. The teaching aid has certain innovativeness and practicability, the appearance can directly reflect the motion dynamics of various internal parts of the helicopter, students can know the principle of relevance of helicopter transmission, and the structure and transmission characteristics of internal components of the helicopter, such as a speed reducer, a reduction gear, a transmission rod and the like, are known, so that the enthusiasm of teenagers for aviation knowledge is further stimulated.

Drawings

FIG. 1 is a schematic structural diagram of a helicopter tail reducer demonstration model teaching aid provided by the application.

Fig. 2 is a schematic diagram of a tail reducer structure of a helicopter tail reducer demonstration model teaching aid.

Fig. 3 is a partially enlarged structural schematic diagram of a part a in fig. 1 of a helicopter tail reducer demonstration model teaching aid.

In the figure: 1. a body; 2. an engine; 3. an engine shaft; 4. a main reducer; 5. a main shaft; 6. a middle-end reducer; 601. a housing; 602. a first connecting shaft; 603. a first helical gear; 604. a second helical gear; 605. a second connecting shaft; 606. a first bearing; 7. a tail skew shaft; 8. a tail body; 9. a second bearing; 10. a third bevel gear; 11. a fourth helical gear; 12. a tail shaft; 13. and a third bearing.

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.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1 and 2, a structure diagram of a helicopter tail reducer demonstration model teaching aid provided for an embodiment of the present application includes a body 1 provided with a transparent cover for easy observation and an engine 2 arranged in the body 1, an output end of the engine 2 is provided with an engine shaft 3, the body 1 is provided with a main reducer 4 connected with the engine shaft 3, the body 1 is provided with a motor connected with the main reducer 4, the body 1 is provided with a main shaft 5 connected with the main reducer 4, one end of the main shaft 5 far away from the main reducer 4 is connected with a middle reducer 6, a tail inclined shaft 7 is obliquely arranged in a tail part of the body 1, one end of the tail inclined shaft 7 is connected with the middle reducer 6, the motor connected with the main reducer 4 drives the engine 2 to work, and then the engine shaft 3 and the main shaft 5 rotate, the main shaft 5 rotates, the tail inclined shaft 7 rotates after the speed reduction work of the middle reducer 6, the other end of the tail inclined shaft 7 is fixedly connected with a third inclined gear 10, the side end of the third inclined gear 10 is connected with a fourth helical gear 11 in a meshed mode, the side end of the fourth helical gear 11 is fixedly connected with a tail wing shaft 12, the tail wing shaft 12 is rotatably connected with the machine body 1, the tail wing shaft 12 extends to one end of the machine body 1 outside and is fixedly connected with a tail wing body 8, the tail inclined shaft 7 rotates to enable the third inclined gear 10 fixedly connected with the tail wing shaft to rotate, the third helical gear 10 rotates to enable the fourth helical gear 11 connected with the third inclined gear in a meshed mode to rotate, the fourth helical gear 11 rotates to enable the tail wing shaft 12 fixedly connected with the fourth helical gear to rotate, and the tail wing shaft 12 rotates to enable the tail wing body 8 fixedly connected with the tail wing shaft to rotate.

In practical use, the motor-driven engine 2 connected to the main reducer 4 operates, and then the engine shaft 3 and the main shaft 5 rotate, the main shaft 5 rotates, the tail bevel shaft 7 rotates after the speed reduction operation of the middle reducer 6, the tail bevel shaft 7 rotates to enable the third bevel gear 10 fixedly connected to the third bevel gear to rotate, the third bevel gear 10 rotates to enable the fourth bevel gear 11 connected to the third bevel gear in a meshed mode to rotate, the fourth bevel gear 11 rotates to enable the tail wing shaft 12 fixedly connected to the fourth bevel gear to rotate, and the tail wing shaft 12 rotates to enable the tail wing body 8 fixedly connected to the tail wing shaft to rotate.

As shown in fig. 3, in one aspect of the present embodiment, the middle reduction gear 6 includes a housing 601, a first connecting shaft 602, a first bevel gear 603, a second bevel gear 604 and a second connecting shaft 605, the housing 601 is disposed in the body 1, the first connecting shaft 602 is rotatably connected in the housing 601, the first connecting shaft 602 is fixedly connected to one end of the main shaft 5 extending into the housing 601, the other end of the first connecting shaft 602 is fixedly connected to the first bevel gear 603, the first bevel gear 603 is engaged with the second bevel gear 604, the second bevel gear 604 is fixedly connected to the second connecting shaft 605, the second connecting shaft 605 is rotatably connected to the housing 601, the second connecting shaft 605 is fixedly connected to one end of the tail bevel shaft 7 extending into the housing 601, the main shaft 5 rotates to rotate the first connecting shaft 602 fixedly connected thereto in the housing 601, the first connecting shaft 602 rotates to rotate the first bevel gear 603 fixedly connected thereto, the first bevel gear 603 rotates to rotate the second bevel gear 604 in meshing engagement therewith, the second bevel gear 604 rotates to rotate the second connecting shaft 605 fixedly connected therewith, and the second connecting shaft 605 rotates to rotate the trailing bevel shaft 7 fixedly connected therewith.

Further, as shown in fig. 2, the first connecting shaft 602 and the second connecting shaft 605 are both provided with a first bearing 606 fixedly connected with the housing 601, and the first connecting shaft 602 and the second connecting shaft 605 can rotate better and smoothly through the arrangement of the first bearing 606.

As shown in fig. 2, as a preferred embodiment of the present application, a second bearing 9 is disposed on an end of the tail inclined shaft 7 away from the third inclined gear 10, and the rotation of the tail inclined shaft 7 is made smoother by the second bearing 9.

Furthermore, as shown in fig. 2, a third bearing 13 is disposed on a side where the tail oblique shaft 7 and the tail wing shaft 12 are close to each other, so that the tail oblique shaft 7 and the tail wing shaft 12 can rotate more smoothly.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A helicopter tail reducer demonstration model teaching aid comprises a helicopter body (1) and an engine (2) arranged in the helicopter body (1), wherein an engine shaft (3) is arranged at the output end of the engine (2), a main reducer (4) connected with the engine shaft (3) is arranged in the helicopter body (1), a main shaft (5) connected with the main reducer (4) is arranged in the helicopter body (1), the helicopter is characterized in that one end, far away from the main reducer (4), of the main shaft (5) is connected with a middle reducer (6), a tail inclined shaft (7) is obliquely arranged in the tail part of the helicopter body (1), one end of the tail inclined shaft (7) is connected with the middle reducer (6), the other end of the tail inclined shaft (7) is fixedly connected with a third inclined gear (10), the side end of the third inclined gear (10) is meshed with a fourth inclined gear (11), the side end of the fourth inclined gear (11) is fixedly connected with a tail wing shaft (12), the tail wing shaft (12) is rotatably connected with the fuselage (1), and one end of the tail wing shaft (12) extending out of the fuselage (1) is fixedly connected with a tail wing body (8).

2. The helicopter tail reducer demonstration model teaching aid according to claim 1, wherein the middle reducer (6) comprises a housing (601), a first connecting shaft (602), a first bevel gear (603), a second bevel gear (604) and a second connecting shaft (605), the housing (601) is arranged in the fuselage (1), the first connecting shaft (602) is rotatably connected in the housing (601), the first connecting shaft (602) is fixedly connected with one end of a main shaft (5) extending into the housing (601), the other end of the first connecting shaft (602) is fixedly connected with the first bevel gear (603), the first bevel gear (603) is engaged with the second bevel gear (604), the second bevel gear (604) is fixedly connected with the second connecting shaft (605), and the second connecting shaft (605) is rotatably connected with the housing (601), the second connecting shaft (605) is fixedly connected with one end of a tail inclined shaft (7) extending into the shell (601).

3. The helicopter tail reducer demonstration model teaching aid according to claim 2, characterized in that the first connecting shaft (602) and the second connecting shaft (605) are both provided with a first bearing (606) fixedly connected with the housing (601).

4. The helicopter tail reducer demonstration model teaching aid according to claim 1, characterized in that a second bearing (9) is arranged on one end of the tail inclined shaft (7) far away from the third inclined gear (10).

5. A helicopter tail reducer demonstration model teaching aid according to any one of claims 1-4, characterized in that a third bearing (13) is arranged on each side of the tail oblique shaft (7) and the tail wing shaft (12) that are close to each other.