CN111703512A - A scissor-type flexible wing device - Google Patents

Abstract

The invention relates to the field of aerodynamics, and discloses a scissor-type flexible vehicle wing device, which comprises an X-shaped scissor arm group, and the tail end of the X-shaped scissor arm group is connected with a V-shaped scissor fork arm through a hinge. The fork arm is close to the trailing edge of the wing, the head end of the X-shaped scissor arm group is connected to the rocker arm through a hinge, and the other end of the rocker arm is installed with a pivot A. The present invention is driven by a stepping motor, the transmission mechanism is simple, the motion response is fast, and there is no dead angle. According to different driving conditions, through the angle change of the scissor-type flexible mechanism, different wing airfoil sections can be adjusted, and the airfoil of the wing can be improved. Aerodynamic performance, has good application value.

Description

A scissor-type flexible wing device

technical field

The invention relates to the field of aerodynamics, in particular to a scissor-type flexible vehicle wing device.

Background technique

In the aerodynamic package of the racing car, the wing provides enough downforce for the racing car, especially the downforce provided by the rear wing accounts for 30-45% of the total downforce. The design of the car wing plays an important role in the performance of the racing car. There is an inevitable relationship between the development of the aerodynamic kit of the racing car and the research of aeronautical aircraft. The demand for downforce on the racing car can be regarded as the demand for lift when designing the aircraft, and the wings of the racing car can be regarded as an upside-down aircraft. wing.

At present, the wings used in racing cars are all fixed. During the competition, the driving conditions are changed. In order to improve the aerodynamic performance of the car and adapt to the needs of different driving conditions, the wings must be able to "deform on demand". The optimum aerodynamic shape required for the ride is always maintained, therefore, the fixed wing is less suitable and needs further improvement.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a scissor-type flexible wing device, which has a simple structure and reliable operation, and is driven by a stepping motor to drive the scissors-type actuator to move. Change different airfoil sections according to different driving conditions, improve the aerodynamic performance, improve the stability and handling of the racing car, and have good application value.

To achieve the above object, the present invention provides the following technical solutions:

A scissor-type flexible vehicle wing device comprises an X-shaped scissor arm group, the tail end of the X-shaped scissor fork arm group is connected with a V-shaped scissor fork arm through a hinge, and the V-shaped scissor fork arm is close to the trailing edge of the vehicle wing. The head end of the X-shaped scissor arm group is connected with a rocker arm through a hinge, and the other end of the rocker arm is installed with a pivot A.

As a further solution of the present invention: the X-shaped scissor arm group includes a first scissor arm, a second scissor arm, a third scissor arm, a fourth scissor arm and a fifth scissor arm which are connected end-to-end through hinges in sequence arm.

As a further solution of the present invention: the middle parts of the first scissor arm, the second scissor arm, the third scissor arm, the fourth scissor arm and the fifth scissor arm are connected by the first link and the second link. The rods are connected by the pivot axis B to form a two-force rod. As a further solution of the present invention: the V-shaped scissor arm is a two-force rod formed by two connecting rods hinged through a hinge.

As a further solution of the present invention: the rocker arm is hinged with the first link of the first scissor arm through a hinge.

As a further solution of the present invention: the rocker arm is connected with the output shaft of the stepping motor.

Compared with the prior art, the beneficial effects of the present invention are:

The scissor-type flexible wing device has a reasonable structure and novel design, is driven by a stepping motor, has a simple transmission mechanism, a fast motion response, and no dead angle occurs, and can pass the angle of the scissor-type flexible mechanism according to different driving conditions. Change, adjust different wing airfoil sections, improve the aerodynamic performance of the wing, and have good application value.

Description of drawings

FIG. 1 is a schematic structural diagram of a scissor-type flexible wing device.

Figure 2 is a schematic structural diagram of a scissor-type flexible wing device when the trailing edge is heightened.

FIG. 3 is a schematic structural diagram of a scissor-type flexible wing device when the trailing edge is lowered.

In the figure: 1-Pivot A, 2-Rocker arm, 3-First scissor arm, 4-Second scissor arm, 5-Third scissor arm, 6-Fourth scissor arm, 7-Fifth Scissor arm, 8-V type scissor arm, 9-second link, 10-first link, 11-hinge, 12-pivot B, 13-trailing edge.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Referring to FIG. 1 , in an embodiment of the present invention, a scissor-type flexible vehicle wing device is fixedly connected to the inner surface of the vehicle wing, and includes an X-shaped scissor arm group, and the X-shaped scissor fork arm group includes a hinge 11 in turn. The first scissor arm 3, the second scissor arm 4, the third scissor arm 5, the fourth scissor arm 6 and the fifth scissor arm 7 connected end to end, the first scissor arm 3, the second scissor arm The middle parts of the fork arm 4, the third scissor arm 5, the fourth scissor arm 6 and the fifth scissor arm 7 are formed by connecting the first link 10 and the second link 9 through the pivot B12. The rear end of the X-shaped scissor arm group is connected with a V-shaped scissor arm 8 through a hinge 11, and the V-shaped scissor arm 8 is close to the trailing edge 13 of the wing. The V-shaped scissor arm 8 is composed of two The connecting rod is a two-force rod that is hinged by a hinge 11. The head end of the X-shaped scissor arm group is connected with a rocker arm 2 through the hinge 11. The rocker arm 2 is connected to the first scissor arm 3 through the hinge 11. The connecting rod 10 is hinged, the rocker arm 2 is connected with the output shaft of the stepping motor, and the other end of the rocker arm 2 is installed with a pivot A1.

Among them, the wing adopts a cavity structure, and the surface is attached with a polyoxymethylene honeycomb skin, which has good flexibility and bearing capacity, so that the wing surface is deformed under the drive of the stepping motor. The invention improves the aerodynamic efficiency of the racing car. A scissor-type flexible wing device is developed under the mode of breaking the overall change of the traditional airfoil. Based on the adaptive flexible trailing edge system of the reference aircraft, a flexible wing is designed that can change the shape of the trailing edge during racing. It enables the system to improve the handling stability and the maximum speed of the racing car to varying degrees when the car is cornering at high speed or accelerating in a straight line. According to different driving conditions, the stepper motor rotates at different angles, and the scissors are driven by the rocker arm to be flexible. The movement of the mechanism realizes the change of the angle between the links of the scissor arm, thereby changing the shape of the trailing edge and realizing the change of the airfoil section of the wing.

The working principle of the invention is as follows: the stepper motor is logically calculated and judged by the control system to determine the airfoil section under different driving conditions. The stepping motor rotates a certain angle after receiving the signal, and drives the rocker arm 2 to rotate at a certain angle around the pivot axis A1. The other end of the rocker arm 2 drives the first link 10 of the first scissor arm 3 to rotate, and the first link The rotation of 10 makes the included angle of the two connecting rods of the first scissor arm 3 change, and the change of the included angle of the first scissor arm 3 is transmitted to the second scissor arm 4, the third scissor arm 5, The fourth scissor arm 6, the fifth scissor arm 7 and the V-shaped scissor arm 8 at the end drive the entire scissor-type transmission mechanism to move, so as to achieve the purpose of lowering or increasing the curvature of the trailing edge of the airfoil, and changing the The role of the airfoil section.

Referring to Figure 2, when the car is cornering at high speed, the outer wheels of the car will suffer from a serious lack of adhesion due to centrifugal force, which affects the driving of the car, and the car is prone to side slip. The size of the downforce on both sides to improve the stability of the car. When cornering at high speed, after calculation and logical judgment, the stepping motor will drive the rocker arm 2 to rotate counterclockwise around the pivot axis A1 by a certain angle, and the rocker arm 2 drives the first link 10 to move upward through the hinge, so that the first scissor arm The angle between the first link 10 and the second link 9 of 3 changes, and the second scissor arm 4, the third scissor arm 5, the fourth The scissor arm 6, the fifth scissor arm 7 and the V-shaped scissor arm 8 at the end make the trailing edge 13 of the wing raised and the curvature increased, thereby changing the airfoil section of the wing and increasing the airfoil generated by the wing. The downforce improves the handling stability of the car when cornering at high speed.

Referring to Figure 3, when the car starts to accelerate and drives on a straight road, the driving resistance should be reduced and the downforce of the rear wing of the car should be reduced. After calculation and logical judgment, the stepping motor will drive the rocker arm 2 to rotate clockwise around the pivot A1 by a certain angle, and the rocker The arm 2 drives the first link 10 to move downward through the hinge, so that the angle between the first link 10 and the second link 9 of the first scissor arm 3 changes, and the angle between the scissor arms 3 changes. The hinge transmits the second scissor arm 4, the third scissor arm 5, the fourth scissor arm 6, the fifth scissor arm 7 and the V-shaped scissor arm 8 in turn, so that the trailing edge 13 of the wing is lowered and bent. degree decreased. As a result, the airfoil section of the wing is changed, reducing the downforce generated by the wing, thereby increasing the acceleration performance and top speed of the car.

The scissor-type flexible wing device is driven by a stepping motor, and the scissors-type flexible transmission mechanism is driven by the rocker arm to move, so that the angle between each link of each scissor arm changes, so as to realize the change of the wing airfoil section. In this paper, a scissor-type flexible wing device system is proposed. During the driving process of the car, the wing cross-section airfoil is adjusted in real time according to the changes of the driving environment and the current speed to improve the aerodynamic efficiency of the wing. pressure to improve the car's cornering stability and straight-line top speed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (6)

1. a scissor-type flexible vehicle wing device, is characterized in that, comprises X-type scissor arm group, and the tail end of described X-type scissor fork arm group is connected with V-type scissor arm (8) by hinge (11), V-type scissor arm group The X-shaped scissor arm (8) is close to the trailing edge (13) of the wing, the head end of the X-shaped scissor arm group is connected to the rocker arm (2) through a hinge (11), and the other end of the rocker arm (2) is installed with a pivot A ( 1). 2. A scissor-type flexible vehicle wing device according to claim 1, characterized in that, the X-shaped scissor arm group comprises a first scissor arm (3), a first scissor arm (3), a first scissor arm (3), a second The second scissor arm (4), the third scissor arm (5), the fourth scissor arm (6) and the fifth scissor arm (7). 3. A scissor-type flexible vehicle wing device according to claim 2, wherein the first scissor arm (3), the second scissor arm (4), and the third scissor arm (5) The middle part of the fourth scissor arm (6) and the fifth scissor arm (7) are formed by connecting the first link (10) and the second link (9) through the pivot B (12). Two levers. 4. A scissor-type flexible vehicle wing device according to claim 1, wherein the V-shaped scissor arm (8) is a two-force rod hinged by two connecting rods through a hinge (11). . 5. A scissor-type flexible wing device according to claim 3, wherein the rocker arm (2) is connected to the first link (10) of the first scissor arm (3) through a hinge (11) ) hinged. 6. A scissor-type flexible vehicle wing device according to claim 1 or 5, wherein the rocker arm (2) is connected with an output shaft of a stepping motor.

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