CN217456335U

CN217456335U - Pitch pin structure of paddle handle for pitch-variable propeller

Info

Publication number: CN217456335U
Application number: CN202221514783.1U
Authority: CN
Inventors: 郑伟; 于欣; 钱德龙
Original assignee: Yichang Stana Aviation Technology Co ltd
Current assignee: Yichang Stana Aviation Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-20
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a pitch pin structure of a propeller handle for a pitch-variable propeller, which comprises a propeller aluminum sleeve handle, wherein the propeller aluminum sleeve handle is provided with a central channel; the propeller aluminum sleeve handle is provided with a variable pitch pin at the shaft end of the propeller aluminum sleeve handle; the axis of the pitch-variable pin is not coincident with the axis of the propeller aluminum sleeve handle; the propeller aluminum sleeve handle is provided with a mounting hole for mounting the variable pitch pin at the shaft end of the propeller aluminum sleeve handle, and the mounting hole and the propeller aluminum sleeve handle are integrally formed. The pitch-variable pin is installed in the installation hole in a threaded connection mode. The utility model discloses can let the combined material screw directly produce the oar handle of taking displacement group pinhole in manufacturing process. The variable-pitch shifting pin and the paddle handle are integrally formed, so that the position precision is higher. The composite material is used as a main support in the handle, and the variable-pitch shifting pin is more stable.

Description

Pitch pin structure of paddle handle for pitch-variable propeller

Technical Field

The utility model belongs to the technical field of aerial variable pitch screw and specifically relates to a oar handle pitch-changing pin structure for variable pitch screw.

Background

The pitch-variable shifting pin structure cannot be installed on the propeller handle made of the composite material. The conventional variable-pitch handle is realized by performing a variable-pitch function on the rear end of the all-metal paddle handle through a threaded connection variable-pitch pin pulling piece, the structure is easy to damage in a threaded connection structure, and the variable-pitch pin is easy to fall off. A safety accident occurs.

Day of publication (announcement): 2021-01-22, application No.: CN202011147647.9 discloses a static displacement propeller, mainly by the paddle, the propeller hub, the oar dish, the radome fairing is constituteed, the paddle root bonds with the propeller hub and forms the link joint structure, the propeller hub has a plurality of mounting flanges, installs in the oar dish, oar dish one end is provided with mounting flange and passes through the bolt and the locating pin is connected with external mechanism, the other end passes through the bolt and is connected with the radome fairing, realize the static displacement of propeller through the displacement piece of changing different mounting angles in the oar dish. The static variable pitch propeller has the advantages of simple structure, high efficiency, safety, reliability and the like.

Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a oar handle pitch-changing round pin structure for pitch-changing screw to the defect that prior art exists, can let the combined material screw directly produce the oar handle of taking the pitch-changing to dial the pinhole in the manufacturing process. The variable-pitch shifting pin and the paddle handle are integrally formed, so that the position precision is higher. The composite material is used as a main support in the handle, and the variable-pitch shifting pin is more stable.

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

a propeller handle pitch pin structure for a pitch propeller comprises a propeller aluminum sleeve handle, wherein the propeller aluminum sleeve handle is provided with a central channel;

the propeller aluminum sleeve handle is provided with a variable pitch pin at the shaft end of the propeller aluminum sleeve handle;

the axis of the pitch-variable pin is not coincident with the axis of the propeller aluminum sleeve handle;

the propeller aluminum sleeve handle is provided with a mounting hole for mounting the variable pitch pin at the shaft end of the propeller aluminum sleeve handle, and the mounting hole and the propeller aluminum sleeve handle are integrally formed.

Further, the pitch pin is directly installed in the installation hole in a threaded connection mode.

Furthermore, the mounting hole is a threaded hole, and an external thread is formed at the upper end of the pitch-variable pin.

Compared with the prior art, the utility model following beneficial effect has:

because the production and manufacturing process of the composite material propeller is not equal to that of other metal variable pitch propellers, the variable pitch shifting pin structure cannot be directly manufactured in the blade production process. It is necessary to install the pitch shifting pins after the blade forming process. Since the composite material propeller is not equal to the metal pitch changing blade, a screwed pitch changing pin can be added to the composite material propeller. The composite material paddle can be carried by an external aluminum structure at a variable-pitch pin mounting position in the forming process.

Drawings

Fig. 1 is a schematic structural view of a pitch pin structure of a blade handle for a pitch propeller according to the present invention;

fig. 2 is a bottom view of fig. 1.

In the figure: a propeller aluminum sleeve handle 1; a pitch pin 2.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to fig. 2, the present invention provides a technical solution:

a pitch pin structure of a propeller handle for a pitch propeller comprises a propeller aluminum sleeve handle 1 (namely a propeller handle); the propeller aluminum sleeve handle is provided with a central channel;

the propeller aluminum sleeve handle is provided with a variable pitch pin 2 at the shaft end of the propeller aluminum sleeve handle;

The aluminum protective sleeve of the composite variable pitch propeller can be directly taken out of the position for mounting the variable pitch shifting pin in the production and manufacturing process. And the pitch shifting pin is installed through a pitch shifting pin installing hole site directly brought out. The design can lead the composite propeller to directly produce the propeller handle with the variable pitch poking pin hole in the production and manufacturing process. This design has the advantage. The variable-pitch shifting pin and the paddle handle are integrally formed, so that the position precision is higher. The composite material is used for main support in the handle, and the variable-pitch shifting pin is more stable.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A propeller handle pitch pin structure for a pitch propeller comprises a propeller aluminum sleeve handle, wherein the propeller aluminum sleeve handle is provided with a central channel;

the propeller aluminum sleeve handle is characterized in that a variable pitch pin is arranged at the shaft end of the propeller aluminum sleeve handle;

2. A shank pitch pin arrangement for a pitch propeller as claimed in claim 1, wherein the pitch pin is mounted directly in the mounting hole by means of a threaded connection.

3. The structure of the pitch pin for the handle of the pitch propeller as claimed in claim 1 or 2, wherein the mounting hole is a threaded hole, and the upper end of the pitch pin is externally threaded.