Folding wing mechanism capable of being folded and unfolded repeatedly

Abstract

The utility model belongs to the field of aviation aircrafts, and relates to a folding wing mechanism capable of being folded and unfolded repeatedly. Comprising a machine body, a rotating shaft, left and right airfoils, a ball screw, a screw support, a linear guide rail, a sliding block, a pull rod, a locking mechanism and a rotating motor. Through the arrangement of the folding wing, repeated folding and unfolding of the airfoil surface of the aircraft are achieved, the airfoil surface can be unfolded when the aircraft is launched, the airfoil surface is folded when the aircraft is recycled, and therefore the recycling difficulty of the aircraft is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aviation aircraft, and relates to a foldable wing mechanism capable of being repeatedly folded and unfolded. BACKGROUND

[0002] In order to facilitate transportation and launching, many aircrafts adopt foldable wings to reduce their envelopes. The foldable wing mechanism makes the wing surface be in a folded state before transportation and launching, and makes the wing surface be unfolded after launching. However, most of the current foldable wing mechanisms can only realize the process from folding to unfolding, and when the aircraft needs to be recovered, the wing surface that cannot be folded again will greatly increase the difficulty of recovery and easily cause damage to the wing surface during the recovery process. Therefore, a foldable wing mechanism capable of being repeatedly folded and unfolded is needed to be designed, so that the wing surface of the aircraft can be unfolded during launching and folded again during recovery, thereby reducing the difficulty of aircraft recovery and improving the integrity of the aircraft after recovery. SUMMARY

[0003] OBJECTIVE

[0004] The present application is designed in view of the above-mentioned prior art, and provides a foldable wing mechanism capable of being repeatedly folded and unfolded, so that the wing surface of the aircraft can be unfolded during launching and folded again during recovery, thereby reducing the difficulty of aircraft recovery and improving the integrity of the aircraft after recovery.

[0005] TECHNICAL SCHEME

[0006] The foldable wing mechanism capable of being repeatedly folded and unfolded comprises a body, a rotating shaft, left and right wing surfaces, a ball screw, a screw rod support, a linear guide rail, a sliding block, a pull rod, a locking mechanism and a rotating motor. The left and right wings are connected with the body through the rotating shaft, and can rotate around the rotating shaft. The sliding block is connected with the left and right wings through the pull rod at both ends, and the pull rod is hingedly connected with the sliding block and the wings. The linear guide rail is fixedly installed on the body, and the sliding block is installed on the linear guide rail, so that the sliding block can slide in parallel along the linear guide rail. The sliding block drives the left and right wings to rotate around the rotating shaft through the pull rod by sliding forward and backward. The screw rod of the ball screw is installed on the body through the screw rod support at both ends, and the screw rod can rotate around its axis. The axis direction of the screw rod is parallel to the linear guide rail. The nut of the ball screw is fixedly connected with the sliding block, so that the screw rod drives the sliding block to slide forward and backward along the guide rail by rotating. The rotating motor is installed at one end of the screw rod to provide rotating power for the screw rod. The sliding block can slide forward and backward by the forward and reverse rotation of the rotating motor, so as to drive the wing surface to unfold or fold through the connecting rod.

[0007] Further, the locking mechanism is composed of a locking pin, a pressing pin, a spring, a shear pin and a shell.

[0008] Further, the locking pin and the spring are installed in the pressing pin, the pressing pin is installed in the shell and is fixedly connected with the shell through the shear pin. The locking mechanism is installed on the body, and its axis is perpendicular to the chord plane of the wing surface.

[0009] Further, when the wing surface is folded, the locking pin compression spring is retracted in the pressing pin, and when the wing surface is unfolded, the locking pin is ejected into the groove on the wing surface under the spring force to lock the unfolded state of the wing surface.

[0010] Further, when the wing surface needs to be folded, the pressing pin shears the shear pin under the action of the external gas power source to drive the locking pin to retract, thereby unlocking the wing surface, and at this time, the rotary motor is reversed to drive the wing surface to fold again.

[0011] Further, a kind of aircraft equipped with the repeatable folding and unfolding wing mechanism.

[0012] The beneficial effects of the present application are:

[0013] The utility model realizes the repeatable folding and unfolding of aircraft wing surface, can realize the unfolding of wing surface when aircraft is launched, and folds wing surface when recycling, to greatly reduce the difficulty of aircraft recycling. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Schematic view of repeatable folding and unfolding wing mechanism

[0015] Wherein: 1, wing surface; 2, body; 3, linear guide; 4, ball screw (including screw rod and nut)

[0016] 5, sliding block; 6, rotary motor; 7, screw rod support; 8, pull rod;

[0017] Figure 2 For Figure 1 A-A sectional view

[0018] Wherein: 1, wing surface; 2, body; 9, rotating shaft; 10, locking mechanism;

[0019] Figure 3 For locking mechanism schematic view;

[0020] Wherein: 10-1, locking pin; 10-2, pressing pin; 10-3, spring; 10-4, shear pin; 10-5, shell DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this invention. The embodiments described below with reference to reference are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below.

[0022] like Figures 1 to 3 As shown, the mechanism consists of a wing surface 1, a body 2, a linear guide rail 3, a ball screw (including the screw and nut) 4, a slider 5, a rotary motor 6, a screw support 7, a pull rod 8, a rotating shaft 9, and a locking mechanism 10. The locking mechanism 10 consists of a locking pin 10-1, a pressing pin 10-2, a spring 10-3, a shearing pin 10-4, and a housing 10-5.

[0023] The installation process of this mechanism is as follows: First, install the rotating shaft 9 onto the body 2 so that the rotating shaft 9 can rotate freely around its own axis; then fix the linear guide rail 3 and the lead screw support 7 onto the body 2; after fixing the slider 5 to the nut in the ball screw 4, install it together with the lead screw onto the lead screw support 7, and connect the slider 5 to the linear guide rail 3 so that the rotation of the lead screw can drive the slider 5 to slide back and forth along the linear guide rail 3; fix the wing surface 1 to the rotating shaft 9, and use the pull rod 8 to connect the wing surface 1 and the slider 5 so that the slider 5 can drive the wing surface 1 and the rotating shaft 9 to rotate when sliding; finally, fix the locking mechanism 10 to the body 2, and ensure that when the wing surface 1 rotates to the unfolded position, the locking pin 10-1 in the locking mechanism 10 can be inserted into the groove on the wing surface 1 under the action of the spring 10-3, and the installation is complete.

[0024] The working principle of this mechanism is as follows: When the aircraft is launched, the rotary motor 6 rotates forward, driving the lead screw in the ball screw 4 to rotate, thereby driving the slider 5 to slide backward along the linear guide rail 3; the backward sliding of the slider 5 transmits the motion to the wing surface 1 through the pull rod 8, causing the wing surface 1 to rotate around the rotating shaft 9, thus realizing the deployment of the wing surface 1; when the wing surface 1 is deployed to the specified angle, the locking pin 10-1 in the locking mechanism 10 is inserted into the groove on the wing surface 1 under the action of the spring 10-3, locking the wing surface 1 in the deployed position; during recovery, the pressing pin 10-2 in the locking mechanism 10 is sheared by the shearing pin 10-4 under the action of the external gas power source, moving downward and driving the locking pin 10-1 to be pulled out of the groove of the wing surface 1, unlocking the wing surface 1; then the rotary motor 6 reverses, driving the ball screw 4 to drive the slider 5 to slide forward along the linear guide rail 3, driving the wing surface 1 to rotate in the folding direction through the pull rod 8, thus realizing the folding of the wing surface 1.

[0025] As will be understood by one of ordinary skill in the art, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. The specific embodiments described above are illustrative of specific ways to make and use the application and are not meant to be limiting. It is to be understood that other embodiments can be used based on the teachings herein, and structural or logical changes can be made without departing from the scope of the present application. Accordingly, the specification is to be regarded as illustrative only and not restrictive.

Claims

1. A refoldable folding wing mechanism, characterized by, The device comprises a body, a rotating shaft, left and right wings, a ball screw, a screw support, a linear guide rail, a slider, a pull rod, a locking mechanism and a rotating motor. The left and right wings are connected to the body through the rotating shaft and can rotate around the rotating shaft. The slider is connected to the left and right wings through the pull rod at both ends. The pull rod is hingedly connected to the slider and the wings. The linear guide rail is fixedly installed on the body, and the slider is installed on the linear guide rail so that the slider can slide in parallel along the linear guide rail. The slider slides forward and backward to drive the left and right wings to rotate around the rotating shaft through the pull rod. The screw of the ball screw is installed on the body through the screw support at both ends, and the screw can rotate around its axis. The axis direction of the screw is parallel to the linear guide rail. The nut of the ball screw is fixedly connected to the slider so that the screw rotation drives the slider to slide forward and backward along the guide rail. The rotating motor is installed at one end of the screw to provide rotating power for the screw. The slider slides forward and backward by the forward and reverse rotation of the rotating motor, thereby driving the wings to unfold or fold through the connecting rod.

2. The mechanism of claim 1, wherein, The locking mechanism comprises a locking pin, a pressing pin, a spring, a shear pin and a shell.

3. The mechanism of claim 1, wherein, The locking pin and the spring are installed in the pressing pin, and the pressing pin is installed in the shell and fixedly connected to the shell through the shear pin. The locking mechanism is installed on the body and its axis is perpendicular to the chord plane of the wings.

4. The mechanism of claim 1, wherein, When the wings are folded, the locking pin is retracted in the pressing pin under the compression of the spring. When the wings are unfolded, the locking pin is ejected into the groove on the wings under the spring force to lock the unfolded state of the wings.

5. The mechanism of claim 1, wherein, When the wings need to be folded, the pressing pin is cut off under the action of the external gas power source to drive the locking pin to retract, thereby unlocking the wings. At this time, the rotating motor is reversed to drive the wings to fold again.

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