CN105292440B

CN105292440B - Frame structure of small single-rotor unmanned helicopter

Info

Publication number: CN105292440B
Application number: CN201510873181.3A
Authority: CN
Inventors: 王国初; 李宝进; 李兆志
Original assignee: Xuzhou Qifeng Intelligent Technology Co ltd
Current assignee: Xuzhou Qifeng Intelligent Technology Co ltd
Priority date: 2015-12-03
Filing date: 2015-12-03
Publication date: 2023-11-10
Anticipated expiration: 2035-12-03
Also published as: CN105292440A

Abstract

The frame structure of the small single-rotor unmanned helicopter comprises a bottom plate, a supporting vertical plate, a gearbox lower plate and a gearbox upper cover. The bottom plate is positioned below the lower plate of the gearbox, the lower end of the supporting vertical plate is connected with the bottom plate, and the upper end of the supporting vertical plate is connected with the lower plate of the gearbox; the upper cover of the gearbox is arranged at the upper end of the lower plate of the gearbox, and an inner cavity for installing a transmission part is formed between the upper cover of the gearbox and the lower plate of the gearbox. The invention has the advantage that the frame is provided with a cavity for installing the transmission part, namely an inner cavity between the upper cover of the gearbox and the lower plate of the gearbox. The gearbox is not required to be additionally arranged, and the overall weight of the unmanned helicopter is reduced. The frame type structure is adopted, the structure is simple, and the assembly is easy.

Description

Frame structure of small single-rotor unmanned helicopter

Technical Field

The invention relates to a frame structure, in particular to a frame structure of a small single-rotor unmanned helicopter.

Background

The unmanned helicopter has the advantages of flexibility, convenience in taking off and landing, capability of hovering in the air, controllable flying speed and the like, and is widely applied to the fields of military, agriculture, civil use and the like.

At present, a small single-rotor unmanned helicopter frame adopts a plate box type structure, and the following defects exist: 1. the gearbox is mutually independent with the frame, and the gearbox passes through the connecting piece to be connected in the frame, causes unmanned helicopter overweight, has increased unmanned helicopter's flight load. 2. The whole rigidity of the frame of the plate structure is poor, the whole low-frequency vibration is large during flight, potential safety hazards exist, and interference is generated to electronic equipment (a gyroscope or flight control equipment).

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a rack structure of a small single-rotor unmanned helicopter, which combines a gearbox in a rack, so that the weight of the unmanned helicopter is effectively reduced, the coincidence of an engine in flight is reduced, the structure is simple, and the overall rigidity of the unmanned helicopter is improved.

The technical scheme of the invention is as follows: the frame structure of the small single-rotor unmanned helicopter comprises a bottom plate, a supporting vertical plate, a gearbox lower plate and a gearbox upper cover;

the bottom plate is positioned below the lower plate of the gearbox, the lower end of the supporting vertical plate is connected with the bottom plate, and the upper end of the supporting vertical plate is connected with the lower plate of the gearbox; the upper cover of the gearbox is arranged at the upper end of the lower plate of the gearbox and is combined with the lower plate of the gearbox to form a gearbox body;

the bottom plate is provided with a water pump mounting hole, a storage battery mounting hole and an engine fixing screw hole; an electric starting motor mounting hole, an engine positioning hole, a primary shaft bearing hole A, a propeller shaft bearing hole A, a tensioning wheel shaft hole and a tail pipe seat fixing screw hole are formed in the lower plate of the gearbox; the upper cover of the gearbox is provided with a propeller shaft bearing hole B and a primary shaft bearing hole B;

the primary shaft bearing hole A, the propeller shaft bearing hole B and the primary shaft bearing hole B are communicated with the inner cavity of the gearbox body; the primary shaft bearing hole A corresponds to the primary shaft bearing hole B in position, and the propeller shaft bearing hole A corresponds to the propeller shaft bearing hole B in position.

The invention further adopts the technical scheme that the bottom plate comprises a plate A and a plate B which are connected into a whole through a supporting vertical plate by bolts; the water pump mounting hole, the storage battery mounting hole and the engine fixing screw hole are all positioned on the plate A.

The invention further adopts the technical scheme that an electric starting motor mounting hole, an engine positioning hole, a primary shaft bearing hole A and a propeller shaft bearing hole A are arranged in parallel and sequentially on a lower plate of a gearbox.

Compared with the prior art, the invention has the following advantages:

1. the frame is provided with a cavity for installing a transmission part, namely an inner cavity between the upper cover of the gearbox and the lower plate of the gearbox. The gearbox is not required to be additionally arranged, and the overall weight of the unmanned helicopter is reduced.

2. The frame type structure is adopted, the structure is simple, and the assembly is easy. The hole position of the lower plate of the gearbox is provided with the engine, the primary speed change and the secondary speed change which are arranged in parallel, so that the integral rigidity of the frame is improved, the vibration during flying is reduced, and the working stability and the reliability of the electronic equipment are improved.

The invention is further described below with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention in a top view;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of plate A;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is a bottom view of FIG. 4;

FIG. 7 is a schematic structural view of a transmission cover;

FIG. 8 is a cross-sectional view of C-C of FIG. 7;

FIG. 9 is a rear view of FIG. 7;

FIG. 10 is a schematic structural view of a lower plate of the transmission;

FIG. 11 is a D-D sectional view of FIG. 10;

fig. 12 is a rear view of fig. 10.

Detailed Description

Example 1:

as shown in fig. 1: the frame structure of the small single-rotor unmanned helicopter comprises a bottom plate 1, a supporting vertical plate 2, a gearbox lower plate 3 and a gearbox upper cover 4.

The bottom plate 1 is positioned below the gearbox lower plate 3, the lower end of the supporting vertical plate 2 is connected with the bottom plate 1 through bolts, and the upper end of the supporting vertical plate is connected with the gearbox lower plate 3 through bolts; the upper gearbox cover 4 is arranged at the upper end of the lower gearbox plate 3 and is combined with the lower gearbox plate 3 to form a gearbox body.

As shown in fig. 4 to 6: the bottom plate 1 comprises a plate A14 and a plate B15, and the plate A14 and the plate B15 are connected into a whole through a supporting vertical plate 2 by bolts; the plate a14 is provided with a water pump mounting hole 11, a battery mounting hole 12, and an engine fixing screw hole 13.

As shown in fig. 10 to 12: the lower plate 3 of the gearbox is provided with an electric starting motor mounting hole 31, an engine positioning hole 32, a primary shaft bearing hole A33, a propeller shaft bearing hole A34, a tensioning wheel shaft hole 35 and a tail pipe seat fixing screw hole 36; the electric starter motor mounting hole 31, the engine positioning hole 32, the primary shaft bearing hole a33 and the propeller shaft bearing hole a34 are arranged in parallel in order on the transmission lower plate 3.

As shown in fig. 7 to 9: the upper cover 4 of the gear box is provided with a propeller shaft bearing hole B41 and a primary shaft bearing hole B42.

The primary shaft bearing hole A33, the propeller shaft bearing hole A34, the propeller shaft bearing hole B41 and the primary shaft bearing hole B42 are communicated with the inner cavity 5 of the gearbox body; the primary shaft bearing hole a33 corresponds in position to the primary shaft bearing hole B42, and the propeller shaft bearing hole a34 corresponds in position to the propeller shaft bearing hole B41.

Claims

1. Frame construction of unmanned helicopter of small-size single rotor, characterized by: comprises a bottom plate (1), a supporting vertical plate (2), a gearbox lower plate (3) and a gearbox upper cover (4);

the bottom plate (1) is positioned below the lower gearbox plate (3), 6 supporting vertical plates (2) are arranged, the lower ends of the supporting vertical plates (2) are connected with the bottom plate (1), and the upper ends of the supporting vertical plates are connected with the lower gearbox plate (3); the upper gearbox cover (4) is arranged at the upper end of the lower gearbox plate (3), and an inner cavity (5) for installing a transmission part is formed between the upper gearbox cover and the lower gearbox plate (3);

the bottom plate (1) is provided with a water pump mounting hole (11), a storage battery mounting hole (12) and an engine fixing screw hole (13); an electric starting motor mounting hole (31), an engine positioning hole (32), a primary shaft bearing hole A (33), a propeller shaft bearing hole A (34), a tensioning wheel shaft hole (35) and a tail pipe seat fixing screw hole (36) are formed in the gearbox lower plate (3); a propeller shaft bearing hole B (41) and a primary shaft bearing hole B (42) are formed in the gearbox upper cover (4);

the primary shaft bearing hole A (33), the propeller shaft bearing hole A (34), the propeller shaft bearing hole B (41) and the primary shaft bearing hole B (42) are communicated with the inner cavity (5); the primary shaft bearing hole A (33) corresponds to the primary shaft bearing hole B (42), and the propeller shaft bearing hole A (34) corresponds to the propeller shaft bearing hole B (41);

the bottom plate (1) comprises a plate A (14) and a plate B (15), and the plate A (14) and the plate B (15) are connected into a whole through a supporting vertical plate (2) by bolts; the water pump mounting hole (11), the storage battery mounting hole (12) and the engine fixing screw hole (13) are all positioned on the plate A (14);

the electric starting motor mounting hole (31), the engine positioning hole (32), the primary shaft bearing hole A (33) and the propeller shaft bearing hole A (34) are arranged in parallel and in sequence on the gearbox lower plate (3).