CN210971524U

CN210971524U - Root connecting hole structure of aluminum profile rotor wing for unmanned aerial vehicle

Info

Publication number: CN210971524U
Application number: CN201922228000.8U
Authority: CN
Inventors: 于进峰; 张如意; 孟令恩
Original assignee: Henan Kunyu Uav Technology Co ltd
Current assignee: Henan Kunyu UAV Technology Co.,Ltd.
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-07-10
Anticipated expiration: 2029-12-13

Abstract

Root connecting hole structure of aluminium alloy rotor for unmanned aerial vehicle, the aluminium alloy rotor including adopt the aluminium alloy preparation to have the rotor main part of cavity, begin to have the through-hole on the rotor upper and lower face near the root, be full of in the cavity at through-hole position and glue, the through-hole set up after gelling is solid. The connecting hole adopting the opening structure is high in accuracy, not prone to deformation, capable of increasing strength of the opening of the rotor wing, small in influence on weight of the aluminum profile rotor wing and weight distribution and easy to control.

Description

Root connecting hole structure of aluminum profile rotor wing for unmanned aerial vehicle

Technical Field

The utility model relates to a single rotor unmanned aerial vehicle rotor especially relates to a root connecting hole structure of aluminium alloy rotor for unmanned aerial vehicle belongs to unmanned helicopter technical field.

Background

Unmanned helicopter develops rapidly in recent years, and quick application replaces manual work in multiple fields to unmanned aerial vehicle agricultural plant protection is for example, and oil moves unmanned aerial vehicle operation every day and can exceed 1000 mu, is higher than manual work efficiency greatly, provides reliable realization way for high-efficient accurate agriculture. However, the unmanned aerial vehicle has some problems in popularization, such as manufacturing cost and maintenance cost, the price of the existing helicopter is relatively expensive, and the replacement cost is high after damage, so that how to reduce the manufacturing cost and the subsequent use cost of the helicopter is one of the obstacles for eliminating the popularization, the rotor is one of the obstacles, the rotor is one of the core configurations of the unmanned aerial vehicle, and the rotor is a component which is very easy to damage after an accident of the unmanned aerial vehicle occurs, the existing unmanned helicopter rotor is basically manufactured by adopting carbon fiber composite materials, when in manufacturing, firstly, a mould is cleaned, then, a release agent is coated, then, the cut carbon fiber cloth is mutually adhered and connected to a set thickness layer by layer in the mould, the weight difference of two rotors is required to be within 2g on the helicopter, so the existing carbon fiber composite rotors are mutually matched after production, the two rotors which are matched with each other and qualified can be combined for use and cannot be replaced at will. The problem that the compound rotor of carbon fiber exists on the unmanned aerial vehicle of present, in order to reduce cost, raise the efficiency, need develop neotype rotor on unmanned aerial vehicle urgently, aluminium alloy light in weight, with low costs, easily shaping, can large-scale production, aluminium alloy never appears on the helicopter as the rotor use (aluminium alloy has essential difference with the cast aluminium rotor who uses on the helicopter originally, cast aluminium rotor is heavy, can process, but aluminium alloy processibility is poor), the applicant has carried out active research to the aluminium alloy rotor, rotor root and need be connected between the oar clamp, can't make the connection structure of root in the aluminium alloy one shot forming, need this connection structure of fixed connection at aluminium alloy ex-trusions rear portion, this connection structure's form and mode and the weight of rotor, the atress, life-span, performance etc. are directly relevant.

Disclosure of Invention

An object of the utility model is to provide a root connecting hole structure for low-cost aluminium alloy rotor.

In order to realize the purpose of the utility model, the following technical proposal is adopted: root connecting hole structure of aluminium alloy rotor for unmanned aerial vehicle, the aluminium alloy rotor including adopt the aluminium alloy preparation to have the rotor main part of cavity, begin to have the through-hole on the rotor upper and lower face near the root, be full of in the cavity at through-hole position and glue, the through-hole set up after gelling is solid.

Further, the method comprises the following steps of; the number of the through holes is 2-4.

Further, the method comprises the following steps of; the cavity is internally provided with a reinforcing rib which divides the cavity into a plurality of sub-cavities.

Further, the method comprises the following steps of; the outer end of the aluminum profile rotor wing is fixedly connected with a plastic block, the cavity is plugged by the plastic block, and the shape of the plastic block is manufactured according to the shape of the end part of the rotor wing.

The utility model discloses an actively beneficial technological effect lies in: the connecting hole adopting the opening structure is high in accuracy, not prone to deformation and capable of increasing strength of the opening of the rotor wing, influences on weight of the aluminum profile rotor wing and weight distribution are small, control is easy, and the aluminum profile rotor wing can be well applied to a single-rotor-wing helicopter.

Drawings

Fig. 1 is a schematic view of a portion of a rotor having a through hole formed therein.

Figure 2 is an overall schematic view of the rotor.

Fig. 3 is a schematic cross-sectional view of a through-hole.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a rotor body; 2: reinforcing ribs; 3: a sub-cavity; 4: a through hole; 5: a plastic block; 6: and (6) gluing.

Root connecting hole structure of aluminium alloy rotor for unmanned aerial vehicle, the aluminium alloy rotor including adopt the aluminium alloy preparation to have the rotor main part 1 of cavity, the cavity in have strengthening rib 2, the strengthening rib is cut apart into a plurality of subcavities 3 with the cavity, aluminium alloy rotor outer end fixedly connected with plastic block, fixed connection can adopt the bonding mode, the cavity is plugged up to the plastic block, the shape of plastic block is according to rotor tip shape preparation, begins to have through-hole 4 on the rotor that is close to the root about, the through-hole be 2-4. The through hole is a connecting hole, the cavity at the through hole part is filled with glue 6, and the through hole is formed after the glue is solidified.

When this connecting hole was seted up, at first pour into glue in the sub-chamber of outer end, wait to glue and can set up the through-hole after solidifying, under the intensity influence to the aluminum alloy after starting the through-hole like this, glue and to make and combine more closely between the aluminum alloy on every side moreover, the reinforcing rotor ability of cutting to shear, it is difficult not hard up after penetrating the bolt-up in the connecting hole of gluing the position moreover.

The technical scheme of this application is the whole development of aluminum alloy rotor partly, in rotor root connection, the form of the too big area bonding of initial attempt, through experimental structure insecure, the effect is not too good, it has also been tested to directly punch on aluminum alloy ex-trusions, but find when punching because the wall is thin, the big size error in hole is too big, and destroy its overall structure after directly punching, weaken the intensity of root, because the rotor root is one of main stress site, so easy damage, and it is not hard up after bolted connection in the through-hole, it is high to try the connecting hole precision that the encapsulating solidifies the back formation in follow-up research and development, it is little to the root intensity influence of aluminium alloy, and it is difficult not hard up after penetrating connecting bolt fastening in the through-hole, its concrete mechanism is unclear at present, but experimental effect is fine.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. Root connecting hole structure of aluminium alloy rotor for unmanned aerial vehicle, its characterized in that: the aluminium alloy rotor include that the aluminium alloy preparation has the rotor main part of cavity, begin to have the through-hole on the rotor upper and lower face near the root, be full of in the cavity at through-hole position and glue, the through-hole set up after solid gelling.

2. The root connecting hole structure of the aluminum profile rotor wing for the unmanned aerial vehicle as claimed in claim 1, is characterized in that: the number of the through holes is 2-4.

3. The root connecting hole structure of the aluminum profile rotor wing for the unmanned aerial vehicle as claimed in claim 1, is characterized in that: the cavity is internally provided with a reinforcing rib which divides the cavity into a plurality of sub-cavities.

4. The root connecting hole structure of the aluminum profile rotor wing for the unmanned aerial vehicle as claimed in claim 1, is characterized in that: the outer end of the aluminum profile rotor wing is fixedly connected with a plastic block, the cavity is plugged by the plastic block, and the shape of the plastic block is manufactured according to the shape of the end part of the rotor wing.