阅读说明：本技术 一种直升机的尾旋翼传动结构 (Tail rotor transmission structure of helicopter ) 是由 王礼号 王坤 薛雄飞 李鑫 赵曙光 于 2020-07-30 设计创作，主要内容包括：本发明涉及直升机技术领域,尤其涉及一种直升机的尾旋翼传动结构,其包括主旋翼组件,转动设置在直升机的机身上,所述主旋翼组件竖直设置,能够带动主旋翼在水平面上转动；转接轴组件,转动设置在所述机身上,且所述转接轴组件水平设置；第一传动带,一端与所述主旋翼组件传动连接,另一端与所述转接轴组件传动连接；尾旋翼组件,设置在所述机身上,且与所述转接轴组件传动连接,所述尾旋翼组件能够在所述转接轴组件的传动下带动尾旋翼在竖直面上转动。本发明能够降低尾旋翼传动结构的制造难度,降低成本,而且避免尾旋翼产生的震动会传到机身,提升可靠度。(The invention relates to the technical field of helicopters, in particular to a tail rotor transmission structure of a helicopter, which comprises a main rotor component, a tail rotor component and a tail rotor component, wherein the main rotor component is rotatably arranged on a helicopter body of the helicopter and vertically arranged and can drive the main rotor to rotate on a horizontal plane; the transfer shaft assembly is rotatably arranged on the machine body and is horizontally arranged; one end of the first transmission belt is in transmission connection with the main rotor assembly, and the other end of the first transmission belt is in transmission connection with the transfer shaft assembly; the tail rotor subassembly sets up on the fuselage, and with the through-connection axle subassembly transmission is connected, the tail rotor subassembly can drive the tail rotor and rotate on vertical face under the transmission of through-connection axle subassembly. The tail rotor wing transmission structure can reduce the manufacturing difficulty of the tail rotor wing transmission structure, reduce the cost, prevent the vibration generated by the tail rotor wing from being transmitted to the machine body and improve the reliability.)

1. A tail rotor transmission structure of a helicopter, comprising:

the helicopter is characterized by comprising a main rotor component (1) which is rotatably arranged on a helicopter body (5), wherein the main rotor component (1) is vertically arranged and can drive a main rotor to rotate on a horizontal plane;

the transfer shaft assembly (2) is rotatably arranged on the machine body (5), and the transfer shaft assembly (2) is horizontally arranged;

one end of the first transmission belt (4) is in transmission connection with the main rotor assembly (1), and the other end of the first transmission belt is in transmission connection with the changeover shaft assembly (2);

tail rotor subassembly (3), set up on fuselage (5), and with the change shaft subassembly (2) transmission is connected, tail rotor subassembly (3) can drive the tail rotor and rotate on vertical face under the transmission of change shaft subassembly (2).

2. A tail rotor transmission structure of a helicopter in accordance with claim 1, characterized in that said main rotor assembly (1) comprises:

the main rotor shaft (11) is rotatably arranged on the airframe (5), the main rotor shaft (11) is vertically arranged, and one end of the main rotor shaft is provided with the main rotor;

the other end of main rotor wing axle (11) is established to action wheel (12), cover, action wheel (12) can be followed the rotation of main rotor wing axle (11) and rotate, the one end of first drive belt (4) with action wheel (12) transmission is connected.

3. A tail rotor transmission structure of a helicopter in accordance with claim 1, characterized in that said transfer shaft assembly (2) comprises

The rotating shaft (21) is rotatably arranged on the machine body (5), and the rotating shaft (21) is horizontally arranged;

the first driven wheel (22) is arranged on the rotating shaft (21) and is in transmission connection with the first transmission belt (4);

and the second driven wheel (23) is arranged on the rotating shaft (21) and is in transmission connection with the tail rotor assembly (3).

4. A tail rotor transmission structure of a helicopter according to claim 3, characterized in that said tail rotor assembly (3) comprises:

one end of the fixing component is detachably connected with the machine body (5);

the rotating assembly is rotatably arranged at one end of the fixing assembly, which is far away from the machine body (5), and can drive the tail rotor wing to rotate on a vertical surface;

and one end of the second transmission belt (31) is in transmission connection with the second driven wheel (23), and the other end of the second transmission belt is in transmission connection with the rotating assembly.

5. A tail rotor transmission structure of a helicopter according to claim 4, characterized in that said fixed assembly comprises a fixed plate (33) and a tail pipe (32) having a hollow structure, said fixed plate (33) is detachably connected to said fuselage (5), said tail pipe (32) is disposed at an end of said fixed plate (33) away from said fuselage (5), and said rotating assembly is disposed at an end of said tail pipe (32) away from said fixed plate (33).

6. A tail rotor transmission structure of a helicopter according to claim 5, characterized in that said fixing plate (33) is provided with a first through hole, said first through hole is communicated with said tail pipe (32), said second transmission belt (31) is inserted into said first through hole and said tail pipe (32).

7. A tail rotor transmission structure of a helicopter according to claim 5, characterized in that one side of said fixed plate (33) facing away from said tail pipe (32) is provided with an ear plate (331) perpendicular to said fixed plate (33), said ear plate (331) is provided with a second through hole, and said ear plate (331) is disposed on said rotary shaft (21) through said second through hole.

8. The tail rotor transmission structure of the helicopter according to claim 6, wherein a fixing seat (35) is provided at one side of the fixing plate (33) where the tail pipe (32) is provided, a third through hole penetrating through the fixing seat (35) is provided, the third through hole is respectively communicated with the tail pipe (32) and the first through hole, and the tail pipe (32) is provided on the fixing seat (35).

9. A tail rotor transmission structure for a helicopter as claimed in claim 5, wherein said rotation assembly comprises:

the tail rotor shaft is rotatably arranged on the tail pipe (32), is horizontally arranged and is provided with the tail rotor;

and the third driven wheel (34) is arranged on the tail rotor wing shaft and is in transmission connection with the second transmission belt (31).

10. A tail rotor transmission structure of a helicopter according to claim 9, characterized in that said second transmission belt (31) is a synchronous belt, and said second driven pulley (23) and said third driven pulley (34) are synchronous pulleys.

Technical Field

The invention relates to the technical field of helicopters, in particular to a tail rotor transmission structure of a helicopter.

Background

The tail rotor of an unmanned helicopter is a component for balancing the main rotor reaction torque and stabilizing and manipulating the heading. As for the power transmission mode of the tail rotor, part of the power transmission mode is transmitted through a transmission shaft connected with the main rotor. The traditional transmission mode has the following defects: the transmission shaft has a complex structure, high processing technology requirement and high cost; the vibration generated by the tail rotor can be transmitted to the fuselage through the transmission shaft; the tail rotor transmission structure is complex and has low reliability.

Therefore, a tail rotor transmission structure of a helicopter is needed to solve the technical problems.

Disclosure of Invention

The invention aims to provide a tail rotor transmission structure of a helicopter, which can reduce the manufacturing difficulty of the tail rotor transmission structure, reduce the cost, prevent the vibration generated by the tail rotor from being transmitted to a helicopter body and improve the reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tail rotor transmission structure of a helicopter, comprising:

the main rotor wing assembly is rotatably arranged on a helicopter body and is vertically arranged, so that the main rotor wing assembly can be driven to rotate on a horizontal plane;

the transfer shaft assembly is rotatably arranged on the machine body and is horizontally arranged;

one end of the first transmission belt is in transmission connection with the main rotor assembly, and the other end of the first transmission belt is in transmission connection with the transfer shaft assembly;

the tail rotor subassembly sets up on the fuselage, and with the through-connection axle subassembly transmission is connected, the tail rotor subassembly can drive the tail rotor and rotate on vertical face under the transmission of through-connection axle subassembly.

Optionally, the main rotor assembly comprises:

the main rotor shaft is rotatably arranged on the machine body, is vertically arranged, and is provided with the main rotor at one end;

the driving wheel is sleeved at the other end of the main rotor wing shaft and can rotate along with the rotation of the main rotor wing shaft, and one end of the first transmission belt is in transmission connection with the driving wheel.

Optionally, the adaptor shaft assembly comprises

The rotating shaft is rotatably arranged on the machine body and is horizontally arranged;

the first driven wheel is arranged on the rotating shaft and is in transmission connection with the first transmission belt;

the second is in from the driving wheel, set up in the pivot, and with the transmission of tail rotor subassembly is connected.

Optionally, the tail rotor assembly comprises:

one end of the fixing component is detachably connected with the machine body;

the rotating assembly is rotatably arranged at one end of the fixing assembly, which is far away from the machine body, and can drive the tail rotor wing to rotate on a vertical surface;

and one end of the second transmission belt is in transmission connection with the second driven wheel, and the other end of the second transmission belt is in transmission connection with the rotating assembly.

Optionally, the fixed component comprises a fixed plate and a tail pipe with a hollow structure, the fixed plate is detachably connected with the machine body, the tail pipe is arranged at one end, far away from the machine body, of the fixed plate, and the rotating component is arranged at one end, far away from the fixed plate, of the tail pipe.

Optionally, a first through hole is formed in the fixing plate, the first through hole is communicated with the tail pipe, and the second transmission belt penetrates through the first through hole and the tail pipe.

Optionally, one side of the fixing plate, which is away from the tail pipe, is provided with an ear plate perpendicular to the fixing plate, a second through hole is formed in the ear plate, and the ear plate is arranged on the rotating shaft through the second through hole.

Optionally, a fixing seat is arranged on one side, where the tail pipe is arranged, of the fixing plate, a third through hole penetrating through the fixing seat is formed in the fixing seat, the third through hole is communicated with the tail pipe and the first through hole respectively, and the tail pipe is arranged on the fixing seat.

Optionally, the rotating assembly comprises:

the tail rotor wing shaft is rotatably arranged on the tail pipe, is horizontally arranged and is provided with the tail rotor wing;

and the third driven wheel is arranged on the tail rotor shaft and is in transmission connection with the second transmission belt.

Optionally, the second transmission belt is a synchronous belt, and the second driven wheel and the third driven wheel are both synchronous belt wheels.

The invention has the beneficial effects that:

the invention provides a tail rotor transmission structure of a helicopter.A main rotor component is rotatably arranged on a helicopter body and can drive the main rotor to rotate on a horizontal plane, the main rotor component is in transmission connection with a through shaft assembly through a first transmission belt, the through shaft assembly is in transmission connection with the tail rotor component, and the tail rotor component is driven to rotate through the through shaft assembly, so that the tail rotor rotates on a vertical plane. By adopting the transmission structure of the transmission belt, the vibration generated by the tail rotor wing cannot be transmitted to the helicopter body, so that the running reliability of the helicopter is improved; and through above-mentioned setting, need not to set up the transmission shaft, can reduce the manufacturing degree of difficulty of tail rotor transmission structure, reduce cost.

Drawings

FIG. 1 is a schematic view of a tail rotor drive configuration of a helicopter of the present invention;

fig. 2 is a partial enlarged view of the invention at a in fig. 1.

In the figure:

1. a main rotor assembly; 11. a main rotor shaft; 12. a driving wheel; 2. the transfer shaft assembly; 21. a rotating shaft; 22. a first driven wheel; 23. a second driven wheel; 3. a tail rotor assembly; 31. a second belt; 32. a tail pipe; 33. a fixing plate; 331. an ear plate; 34. a third driven wheel; 35. a fixed seat; 4. a first drive belt; 5. a fuselage.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In order to fully utilize the power of a helicopter, reduce the manufacturing difficulty of a tail rotor transmission structure, reduce the cost, avoid the vibration generated by a tail rotor from being transmitted to a helicopter body and improve the reliability, as shown in fig. 1 and 2, the invention provides the tail rotor transmission structure of the helicopter, which comprises: the helicopter comprises a main rotor assembly 1, a transfer shaft assembly 2, a first transmission belt 4 and a tail rotor assembly 3, wherein the main rotor assembly 1 is rotatably arranged on a helicopter body 5, and the main rotor assembly 1 is vertically arranged and can drive a main rotor to rotate on a horizontal plane; the transfer shaft assembly 2 is rotatably arranged on the machine body 5, and the transfer shaft assembly 2 is horizontally arranged; one end of the first transmission belt 4 is in transmission connection with the main rotor assembly 1, and the other end of the first transmission belt is in transmission connection with the changeover shaft assembly 2; tail rotor subassembly 3 sets up on fuselage 5, and is connected with the transmission of main shaft subassembly 2, and tail rotor subassembly 3 can drive the tail rotor and rotate on vertical face under the transmission of main shaft subassembly 2.

Main rotor subassembly 1 is connected through 4 transmissions of first drive belt with through change shaft subassembly 2, and change shaft subassembly 2 is connected with the transmission of tail rotor subassembly 3, drives 3 subassemblies of tail rotor subassembly through change shaft subassembly 2 and rotates to make the tail rotor rotate on vertical face. By adopting a transmission structure of a transmission belt, the vibration generated by the tail rotor wing cannot be transmitted to the helicopter body 5, so that the running reliability of the helicopter is improved; and through above-mentioned setting, need not to set up the transmission shaft, can reduce the manufacturing degree of difficulty of tail rotor transmission structure, reduce cost.

Further, the main rotor assembly 1 comprises a main rotor shaft 11 and a driving wheel 12, wherein the main rotor shaft 11 is rotatably arranged on the airframe 5, the main rotor shaft 11 is vertically arranged, and one end of the main rotor shaft is provided with a main rotor; the driving wheel 12 is sleeved at the other end of the main rotor shaft 11, the driving wheel 12 can rotate along with the rotation of the main rotor shaft 11, and one end of the first transmission belt 4 is in transmission connection with the driving wheel 12. Specifically, the drive wheel 12 is keyed to the main rotor shaft 11 so that it can be quickly replaced after the drive wheel 12 or main rotor shaft 11 has failed. The rotation of main rotor shaft 11 transmits through action wheel 12 to transfer shaft subassembly 2 to improved the utilization ratio of the energy of drive main rotor shaft 11 pivoted, only need arrange a drive arrangement moreover and can drive main rotor and tail rotor and rotate, reduced the weight of helicopter.

Further, the transfer shaft assembly 2 comprises a rotating shaft 21, a first driven wheel 22 and a second driven wheel 23, wherein the rotating shaft 21 is rotatably arranged on the machine body 5, and the rotating shaft 21 is horizontally arranged; the first driven wheel 22 is arranged on the rotating shaft 21 and is in transmission connection with the first transmission belt 4; second driven wheel 23 is disposed on shaft 21 and is in driving connection with tail rotor assembly 3. Specifically, in this embodiment, the first driven wheel 22 and the driving wheel 12 are both synchronous belt wheels, and the first driven belt is a synchronous belt, so that a good transmission ratio can be ensured, and meanwhile, flexible transmission is realized, thereby reducing the influence of vibration in the transmission process on the helicopter body 5 and ensuring the stability of the helicopter. Through setting up the change shaft subassembly 2 with power transmission to tail rotor subassembly 3, on the one hand, be convenient for arrange tail rotor subassembly 3, on the other hand, can effectively avoid the rotation that the vibration direct influence main rotor axle 11 of the production of tail rotor subassembly 3 to helicopter in flight stability has been improved.

Further, tail rotor assembly 3 includes: the device comprises a fixed component and a rotating component, wherein one end of the fixed component is detachably connected with a machine body 5; the rotating assembly is rotatably arranged at one end of the fixed assembly, which is far away from the machine body 5, and can drive the tail rotor to rotate on a vertical surface; one end of the second transmission belt 31 is in transmission connection with the second driven wheel 23, and the other end is in transmission connection with the rotating assembly. The second driven wheel 23 on the rotating shaft 21 drives the second transmission belt 31, and the second transmission belt 31 drives the rotating assembly to rotate.

Specifically, the fixed assembly comprises a fixed plate 33 and a tail pipe 32 with a hollow structure, the fixed plate 33 is detachably connected with the body 5, the tail pipe 32 is arranged at one end of the fixed plate 33 far away from the body 5, and the rotating assembly is arranged at one end of the tail pipe 32 far away from the fixed plate 33. With the above arrangement, it is convenient to set the rotating assembly on the body 5.

Further, in order to facilitate the arrangement of the second transmission belt 31 and protect the second transmission belt 31, optionally, the fixing plate 33 is provided with a first through hole, the first through hole is communicated with the tail pipe 32, and the second transmission belt 31 is disposed through the first through hole and the tail pipe 32. The safety of the second belt 31 can be improved by the first through hole and the tail pipe 32 being blocked.

Furthermore, an ear plate 331 perpendicular to the fixing plate 33 is fixedly disposed on a side of the fixing plate 33 away from the tail pipe 32, a second through hole is opened on the ear plate 331, and the ear plate 331 is disposed on the rotating shaft 21 through the second through hole. Through the arrangement, when the helicopter is transported, the fixing plate 33 and the bolt fixedly connected with the helicopter body 5 are detached, and the fixing plate 33 can rotate for a certain angle relative to the helicopter body 5, so that the occupied space of the tail rotor wing assembly 3 is reduced, and the transportation is convenient.

Further, one side of the fixing plate 33, which is provided with the tail pipe 32, is provided with a fixing seat 35, the fixing seat 35 is provided with a third through hole penetrating through the fixing seat 35, the third through hole is respectively communicated with the tail pipe 32 and the first through hole, and the tail pipe 32 is arranged on the fixing seat 35. Through setting up fixing base 35, be convenient for tail pipe 32 and fixed plate 33 be connected, reduced the degree of difficulty of helicopter in the assembly process.

Further, the rotating assembly includes: a tail rotor shaft and a third driven wheel 34, wherein the tail rotor shaft is rotatably arranged on the tail pipe 32, is horizontally arranged and is provided with a tail rotor; the third driven wheel 34 is arranged on the tail rotor shaft and is in transmission connection with the second transmission belt 31. Drive the third through second drive belt 31 and rotate from driving wheel 34, in this embodiment, the third is from driving wheel 34 and tail rotor shaft key-type connection, and the third drives the tail rotor axle rotation from driving wheel 34 to drive the tail rotor and rotate, further absorb the vibration of tail rotor rotation in-process through setting up second drive belt 31, guarantee the stability of helicopter.

Specifically, the second belt 31 is a timing belt, and the second driven pulley 23 and the third driven pulley 34 are both timing pulleys. When can guarantee the drive ratio, realize flexible transmission, further weaken tail rotor and rotate the vibration that drives.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.