CN209905042U

CN209905042U - Folding blade of helicopter

Info

Publication number: CN209905042U
Application number: CN201920303158.4U
Authority: CN
Inventors: 葛讯; 沈元; 郭述臻; 刘卫东
Original assignee: Suzhou Tao - Aviation Technology Co Ltd
Current assignee: Suzhou Tao - Aviation Technology Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2020-01-07
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a folding paddle of helicopter, including propeller hub, connecting piece, coil spring, paddle. Wherein, the propeller hub is articulated with the connecting piece, and the connecting piece is articulated with the paddle. The spiral spring is provided with two, and every spiral spring both ends are respectively with propeller hub and connecting piece fixed connection. The utility model discloses technical scheme provides a folding paddle of helicopter simple structure is reliable, easily manufacturing, can reduce the area that the helicopter took up at the horizontal direction after folding by a wide margin.

Description

Folding blade of helicopter

Technical Field

The utility model relates to a helicopter field, in particular to folded paddle of helicopter.

Background

The helicopter has good take-off and landing and maneuvering performances, is widely applied to reconnaissance, aerial photography, surveying and mapping and other tasks, and has wide military and civil use.

Helicopter blades are usually slender blades, which makes the helicopter occupy a large area in the horizontal plane, and causes inconvenience in transportation and storage. Although the existing foldable helicopter blades can be folded in a rotating way in the horizontal plane, the occupied area of the helicopter in the horizontal plane is reduced, but the occupied space of the helicopter is still large.

Disclosure of Invention

The utility model aims at overcoming the above-mentioned problem, provide a folding paddle of helicopter.

In order to achieve the purpose, the utility model discloses a method is: a folding blade of a helicopter comprises a hub, a connecting piece, a spiral spring and a blade. Wherein, the propeller hub is articulated with the connecting piece, and the connecting piece is articulated with the paddle. The two spiral springs are arranged, and two ends of each spiral spring are fixedly connected with the propeller hub and the connecting piece respectively at two sides of the propeller hub.

As the utility model discloses a preferred, the connecting piece lower part has the board of stretching out, and when the paddle was folded, its board of stretching out and paddle hub lower plane contact carried on spacingly, and paddle leaf exhibition direction is 90 degrees with the horizontal axis direction of paddle hub this moment.

Has the advantages that:

the utility model discloses technical scheme provides a folding paddle of helicopter simple structure is reliable, easily manufacturing, through off-plate folding mode, the space of rational utilization fuselage side, the space that greatly reduced helicopter paddle occupy in the horizontal direction.

Drawings

FIG. 1 is a schematic view of a folded blade configuration of a helicopter;

FIG. 2 is a schematic front side view of a folded blade of a helicopter;

fig. 3 is a schematic side view of a folded blade of a helicopter.

Fig. 1, 2 and 3 show 1, hub, 2, attachment, 3, coil spring, 4, blade, 2a, extension plate.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

Example 1:

fig. 1 and fig. 2 are a schematic view and a schematic view of a folded blade and a folded front side view of the helicopter disclosed in the present embodiment, respectively. The folding blade of the helicopter disclosed by the embodiment comprises a hub 1, a connecting piece 2, a spiral spring 3 and a blade 4. Wherein, the propeller hub 1 is articulated with the connecting piece 2, and the connecting piece 2 is articulated with the blade 4. Two spiral springs 3 are arranged, and two ends of each spiral spring 3 are fixedly connected with the propeller hub 1 and the connecting piece 2 at two sides of the propeller hub 1 respectively.

Fig. 3 is a schematic side view of a folded blade of a helicopter according to the present embodiment, and the lower portion of the connecting member 2 has an extending plate 2a, and when the blade 4 is folded, the extending plate 2a contacts with the lower plane of the hub 1 for limiting, and the extending direction of the blade 4 is 90 degrees to the horizontal axis direction of the hub 1.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics. The foregoing is a detailed description of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered as the protection scope of the present invention.

Claims

1. A helicopter folding blade, comprising: the two spiral springs are arranged, and two ends of each spiral spring are fixedly connected with the hub and the connecting piece respectively on two sides of the hub.

2. A helicopter folding blade according to claim 1, characterized in that: the lower part of the connecting piece is provided with an extending plate, when the blade is folded, the extending plate is contacted with the lower plane of the hub to limit, and the extending direction of the blade forms 90 degrees with the horizontal axis direction of the hub.