CN107161325B - Inner and outer flap cross-linking device - Google Patents

Abstract

The invention relates to an inner and outer flap cross-linking device. The inner and outer flap cross-linking device includes: a piston cylinder assembly; a piston rod assembly, the piston rod assembly is arranged in the piston cylinder assembly, and is fixed radially and axially movable relative to the piston cylinder assembly; a wedge, the arc wedge is fixed on the outside of the piston barrel assembly, and the arc wedge includes a first wedge extrusion surface; a concave ring, the concave ring is fixed on the outside of the piston rod assembly Above, the concave ring includes a second wedge-shaped pressing surface; when the first wedge-shaped pressing surface is in contact with the second wedge-shaped pressing surface, an axial force is generated to realize positive buffering. The cross-linking device for inner and outer flaps of the present invention can have the following beneficial technical effects: it can realize the over-travel positive buffer function, and has a simple structure and is easy to install and maintain.

Description

Internal and external flap cross-linking device

technical field

The invention relates to an inner and outer flap cross-linking device.

Background technique

Due to the limitation of the length of the airport runway, the speed of the landing gear tires, and in order to improve the safety of aircraft take-off and landing, high-lift devices have been continuously developed and widely used in the design of modern large aircraft. The highly precise and complex kinematic mechanism and drive system arranged in the rear edge compartment of the wing realize the free conversion of the high-lift airfoil between various aerodynamic configurations/positions. The drive system is generally composed of a power output unit, a torque transmission line and an actuator with high transmission ratio force/torque output. The main force transmission components of the actuator are generally machined from high-strength high-quality steel and have high durability. performance, but poor resistance to fatigue and initial flaw crack growth. Without dismantling and disassembling the actuator during aircraft operation, ground maintenance personnel cannot effectively inspect it for damage. Airworthiness regulations require that a single failure of such a system must be considered in the design (no matter how low the failure probability is), and it must be ensured that the aircraft still has the ability to continue flying and landing safely after the system fails.

Each trailing edge flap generally has more than two driving actuators. When one of the actuators fails to disengage, the airfoil will have a large degree of inclination (mainly manifested as chord motion of the rib at the end of the airfoil). When this deformation displacement is too large, the wings on both sides will produce a rolling moment that exceeds the trimming capability of the aircraft, thereby hindering flight safety. Arranging a single-degree-of-freedom actuator along the chord direction of the flaps between the inner and outer flaps, that is, the inner and outer flap cross-linking devices, can reduce the excessive tilt of the faulty airfoil and provide auxiliary restraint of the airfoil, thereby ensuring that the system fails. The aircraft still has the ability to continue flying and landing safely.

However, the cross-linking devices of the inner and outer flaps in the prior art generally have complex structures and are inconvenient to install and maintain.

Contents of the invention

An object of the present invention is to overcome the defects of the existing inner and outer flap cross-linking devices, and provide a new inner and outer flap cross-linking device, which can realize the over-travel positive buffer function, and has a simple structure and is easy to install and maintain.

The above purpose of the present invention is achieved by a cross-linking device for inner and outer flaps, which includes:

Piston barrel assembly;

a piston rod assembly, the piston rod assembly is arranged in the piston cylinder assembly, and is radially fixed and axially movable relative to the piston cylinder assembly;

an arc-shaped wedge, the arc-shaped wedge is fixed on the outer side of the piston barrel assembly, and the arc-shaped wedge includes a first wedge-shaped extrusion surface;

a concave ring secured to the outer side of the piston rod assembly, the concave ring including a second wedge-shaped extrusion surface;

When the first wedge-shaped pressing surface is in contact with the second wedge-shaped pressing surface, an axial force is generated to realize positive buffering.

According to the above technical solution, the cross-linking device for inner and outer flaps of the present invention can have the following beneficial technical effects: it can realize the forward buffering function of overtravel, and it has a simple structure and is easy to install and maintain.

Preferably, the piston barrel assembly is provided with piston barrel serrations in the middle of its inner side, and the piston rod assembly is provided with piston rod serrations at both ends of its outer side, wherein, when the first wedge-shaped extrusion surface and the When the second wedge-shaped extrusion surface contacts, a radial force is also generated to tightly embrace the serrations of the piston cylinder and the serrations of the piston rod to realize reverse locking.

According to the above technical solution, the inner and outer flap cross-linking device of the present invention can have the following beneficial technical effects: it can realize the overtravel reverse locking function.

Preferably, the piston cylinder assembly is three separate piston cylinder assemblies with a convex middle, and the piston cylinder assembly has radial elastic deformation capability.

Preferably, the cross-linking device for the inner and outer flaps also includes:

an axial travel stopper, the axial travel stopper is fixed on the outer side of the piston barrel assembly;

a detection sensor, the detection sensor is fixed on the axial travel stopper;

a target, the target is fixed on the concave ring;

Wherein, when the distance between the detection sensor and the target is less than a predetermined threshold, the detection sensor sends out an electrical signal to realize overtravel detection.

According to the above technical solution, the cross-linking device for inner and outer flaps of the present invention can have the following beneficial technical effects: it can realize the overtravel detection function.

Preferably, the axial travel stopper also includes a first axial stop impact surface;

The concave ring also includes a second axial stop impact surface;

A positive stop is achieved when the first axial stop impact surface is in contact with the second axial stop impact surface.

According to the above technical solution, the cross-linking device for inner and outer flaps of the present invention can have the following beneficial technical effects: it can realize the overtravel positive stop function.

Preferably, the cross-linking device for inner and outer flaps further includes a radial spacer arranged between the arc wedge and the piston cylinder assembly, so as to realize the adjustment of the outer diameter of the pressing surface of the arc wedge.

Preferably, the cross-linking device for inner and outer flaps further includes an axial spacer arranged between the concave ring and the piston rod assembly, so as to realize free stroke adjustment.

Description of drawings

Fig. 1 is a perspective view of an inner and outer flap cross-linking device according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an inner and outer flap cross-linking device according to an embodiment of the present invention.

List of reference signs

1. Piston rod assembly

2. Piston barrel assembly

3. Curved wedge

4. Concave ring

5. Detection sensor

6. Target

7. The first wedge-shaped extrusion surface

8. The second wedge-shaped extrusion surface

9. The first axial stop impact surface

10. The second axial stop impact surface

11. Piston barrel sawtooth

12. Serrated piston rod

13. Axial travel stop

Detailed ways

Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpreted as insufficient content of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used in the claims and the description shall have the ordinary meanings understood by those skilled in the technical field to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "A" or "one" and similar words do not indicate a limitation of number, but mean that there is at least one. Words such as "comprises" or "comprises" and similar terms mean that the elements or items listed before "comprises" or "comprises" include the elements or items listed after "comprises" or "comprises" and their equivalent elements, and do not exclude other components or objects. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

Fig. 1 is a perspective view of an inner and outer flap cross-linking device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of an inner and outer flap cross-linking device according to an embodiment of the present invention.

As shown in Figures 1-2, according to an exemplary and non-exclusive embodiment of the present invention, the inner and outer flap cross-linking device includes:

Piston barrel assembly 2;

The piston rod assembly 1, the piston rod assembly 1 is arranged in the piston cylinder assembly 2, and is radially fixed and axially movable relative to the piston cylinder assembly 2;

The arc-shaped wedge 3 is fixed on the outer side of the piston cylinder assembly 2, and the arc-shaped wedge 3 includes a first wedge-shaped extrusion surface 7;

A concave ring 4, the concave ring 4 is fixed on the outer side of the piston rod assembly 1, and the concave ring 4 includes a second wedge-shaped extrusion surface 8;

When the first wedge-shaped pressing surface 7 contacts the second wedge-shaped pressing surface 8, an axial force is generated to realize positive cushioning.

In this way, the inner and outer flap cross-linking device of the present invention can realize the over-travel positive buffer function, and has a simple structure and is easy to install and maintain. Moreover, the inner and outer flap cross-linking device of the present invention has smaller volume and lighter weight.

When any driving actuator of the trailing edge flap is out of order, the cross-linking device of the inner and outer flaps of the present invention can reduce the excessive inclination of the faulty airfoil and avoid the unfavorable vibration of the faulty airfoil, so as to meet the requirements of airworthiness regulations. Requirements for continued safe flight and landing capability in the event of disengagement failure of a single flap actuator of an aircraft.

Specifically, when any driving actuator of the trailing edge flap breaks off, the distance between the two installation points of the inner and outer flap cross-linking devices respectively fixed on the end ribs of the inner and outer flaps will be lengthened or shortened. changes, thereby causing the piston rod assembly 1 to move relative to the piston cylinder assembly 2 along the axial direction in tension or compression.

Preferably, the inner and outer flap cross-linking device also includes:

An axial travel stopper 13, which is fixed on the outer side of the piston barrel assembly 2;

The detection sensor 5 is fixed on the axial travel stopper 13;

Target 6, the target 6 is fixed on the concave ring 4;

Wherein, when the distance between the detection sensor 5 and the target 6 is less than a predetermined threshold, the detection sensor 5 sends out an electric signal to realize the overtravel detection of the distance between the two installation points of the inner and outer flap cross-linking devices.

Preferably, the axial travel stopper 13 also includes a first axial stop impact surface 9;

The concave ring 4 also includes a second axial stop impact surface 10;

A positive stop is achieved when the first axial stop impact surface 9 is in contact with the second axial stop impact surface 10 .

Specifically, when the piston rod assembly 1 moves overtravel in any direction relative to the piston cylinder assembly 2, and the distance between the detection sensor 5 and the target 6 is less than a predetermined threshold, the detection sensor 5 will send out an electrical signal to realize overtravel detection. . Next, the first wedge-shaped extrusion surface 7 of the arc-shaped wedge member 3 contacts the second wedge-shaped extrusion surface 8 of the concave ring 4 to generate an axial force to achieve positive (axial) buffering. Finally, the first axial stop impact surface 9 of the axial travel stopper 13 is in contact with the second axial stop impact surface 10 of the concave ring 4 to realize positive (axial) stop.

Preferably, the axis of the cross-linking device for inner and outer flaps of the present invention is roughly along the chord direction of the flap, the rear end is installed on the end rib of the inner flap, and the front end is installed on the end rib of the outer flap. The stroke limit of free movement along the axis needs to be determined by combining the full-stroke multibody dynamics and finite element deformation simulation results. The free movement travel limit needs to cover the change in the distance between the two installation points of the inner and outer flap cross-linking devices caused by the difference in the movement mechanism of the inner and outer flaps and the aerodynamic load within the full travel range, and the inner and outer flap cross-linking devices must not hinder the movement of the flaps. Normal use.

Preferably, the piston cylinder assembly 2 is provided with piston cylinder serrations 11 in the middle of its inner side, and the piston rod assembly 1 is provided with piston rod serrations 12 at its outer two ends, wherein, when the first wedge-shaped extrusion of the arc-shaped wedge-shaped part 3 When the surface 7 is in contact with the second wedge-shaped extrusion surface 8 of the concave ring 4, a radial force is also generated to tightly embrace the piston barrel serration 11 and the piston rod serration 12 to realize reverse locking.

That is to say, according to the above preferred embodiments of the present invention, the inner and outer flap cross-linking device can not only provide overtravel target approach detection and forward buffer stop function, but also provide overtravel reverse locking function.

Preferably, the piston cylinder assembly 2 is a three-piece separated piston cylinder assembly with a protruding middle, and the piston cylinder assembly 2 has radial elastic deformation capability.

In this way, the piston barrel serrations 11 and the piston rod serrations 12 can better achieve tight grip under radial force.

Preferably, the piston barrel assembly 2 is a pre-deformed piston barrel assembly with a convex center.

In this way, the piston cylinder assembly 2 has a certain convex shape and/or has a certain pre-deformation in the middle, so when the first wedge-shaped extrusion surface 7 of the arc-shaped wedge 3 and the second wedge-shaped extrusion surface of the concave ring 4 8 contact, a radial force is also generated to hold the piston barrel serrations 11 and the piston rod serrations 12 tightly to realize reverse locking. That is to say, the above-mentioned convex pre-deformation of the middle part of the piston cylinder assembly 2 provides a margin for the piston cylinder serrations 11 and the piston rod serrations 12 to hug tightly.

Preferably, the piston cylinder assembly 2 and the concave ring 4 are made of high-strength metal materials, such as Ti-6Al-4V materials.

Preferably, the piston barrel serrations 11 and the piston rod serrations 12 are made of high-strength metal materials, such as Ti-6Al-4V materials.

Of course, the above-mentioned Ti-6Al-4V material is only a preferred material form of the piston cylinder assembly, concave ring, piston cylinder serrations and/or piston rod serrations in the internal and external flap crosslinking device of the present application. Based on the disclosure of the present application, it can be understood that other suitable materials can also be used without departing from the protection scope of the claims of the present application.

Preferably, the detection sensor 5 is a proximity detection sensor.

Preferably, the internal and external flap cross-linking device also includes a radial gasket (such as a metal peelable gasket) arranged between the arc wedge 3 and the piston cylinder assembly 2, so as to realize the extrusion surface of the arc wedge Outer diameter adjustment.

In this way, the outer diameter of the first wedge-shaped extrusion surface of the arc-shaped wedge can be changed by adding (setting) a radial gasket between the arc-shaped wedge and the piston cylinder assembly, and the external field adjustment of the cushioning performance can be better realized .

Preferably, the inner and outer flap cross-linking device further includes an axial gasket (such as a metal gasket) arranged between the concave ring 4 and the piston rod assembly 1, so as to realize free stroke adjustment.

In this way, by adding (setting) an axial gasket between the concave ring and the piston rod assembly, the free stroke adjustment can be better realized.

Some exemplary embodiments have been described above. However, it should be understood that various modifications may be made. For example, if the described techniques are performed in a different order and/or if components of the described system, architecture, device, or circuit are combined in a different manner and/or are replaced or supplemented by additional components or their equivalents, then Suitable results can be achieved. Correspondingly, other implementations also fall within the protection scope of the claims.

Claims (6)

1. a kind of inside and outside wing flap crosslinking apparatus, including：

Piston cartridge module；

Piston rod assembly, the piston rod assembly are set in the piston cartridge module, and relative to the piston cartridge module diameter To fixation, it is axially moveable；

Arc wedge piece, the arc wedge piece are fixed on the outside of the piston cartridge module, and the arc wedge piece includes First wedge-shaped compressive plane；

Recessed circle, the recessed circle are fixed on the outside of the piston rod assembly, and the recessed circle includes the second wedge shaped squeeze face；

When the described first wedge-shaped compressive plane is contacted with second wedge shaped squeeze face, axial force is generated to realize positive buffering；

Wherein, the piston cartridge module is equipped with piston cylinder sawtooth, piston rod assembly both ends on the outside in its middle inside Equipped with piston rod sawtooth, wherein when the described first wedge-shaped compressive plane is contacted with second wedge shaped squeeze face, also generate radial Power holds the piston cylinder sawtooth and the piston rod sawtooth tightly, realizes reverse locked.

2. inside and outside wing flap crosslinking apparatus as described in claim 1, which is characterized in that the piston cartridge module is three pieces of separate types The piston cartridge module of middle part evagination, the piston cartridge module have elastomeric radial ability.

3. the inside and outside wing flap crosslinking apparatus as described in any one in claim 1-2, which is characterized in that the inside and outside wing flap Crosslinking apparatus further includes：

Axial stroke retainer, the axial stroke retainer are fixed on the outside of the piston cartridge module；

Detection sensor, the detection sensor are fixed on the axial stroke retainer；

Target, the target are fixed on the recessed circle；

Wherein, when the distance between the detection sensor and the target are less than predetermined threshold, the detection sensor hair Go out electric signal to realize that overtravel detects.

4. inside and outside wing flap crosslinking apparatus as claimed in claim 3, which is characterized in that

The axial stroke retainer further includes first axis stop shock surface；

The recessed circle further includes the second axial retention shock surface；

When the first axis stop shock surface and the second axial retention shock surface contact, positive stop is realized.

5. the inside and outside wing flap crosslinking apparatus as described in any one in claim 1-2, which is characterized in that the inside and outside wing flap Crosslinking apparatus further includes the radial gasket being set between the arc wedge piece and the piston cartridge module, to realize arc wedge Shape part compressive plane outer diameter is adjusted.

6. the inside and outside wing flap crosslinking apparatus as described in any one in claim 1-2, which is characterized in that the inside and outside wing flap Crosslinking apparatus further includes the axial gasket being set between the recessed circle and the piston rod assembly, to realize free travel tune Section.