CN110641682A - Rocker arm type motion cable mechanism - Google Patents

Abstract

The invention describes a rocker arm type moving cable mechanism comprising: a mechanical and electromagnetic interference shield for cables arranged in a slat; a telescopic link; Mechanical and electromagnetic interference shields; connectors at the leading edge of the wing for connecting the leading edge box section of the wing; wing fixed leading edge bracket for connecting the leading edge box section of the wing; spherical kinematic pair; rotary kinematic pair; A slat connector for docking the electrical equipment and wiring harness in the slat; a winding box installed at the position of the rotary kinematic pair and the spherical kinematic pair respectively; a connector for connecting the spherical kinematic pair to each other. The rocker arm type motion cable mechanism of the present invention has the characteristics of installation in a narrow space, and can adapt to the slat movement of various aircraft types by adjusting the parameter design of each rotary motion pair and the spherical motion pair, and the size and shape design of each structural arm. Surface movement cable layout requirements.

Description

Rocker arm movement cable mechanism

technical field

The invention relates to the field of aircraft electrical wiring harness design and installation, in particular to a novel rocker arm type moving cable mechanism for arranging electrical wiring harnesses in narrow spaces such as aircraft wings.

Background technique

In the arrangement of equipment in a narrow space such as an aircraft wing, the cable arrangement usually requires the installation of a wing motion cable mechanism in the fixed leading edge cabin of the wing to meet the electrical connection of the equipment arranged in the slat. The main implementation forms on the current aircraft are:

1. Folding arm movement mechanism

The knuckle-arm type motion mechanism adopts the form of a knuckle-arm mechanism. When the slat is retracted, the knuckle-arm type kinematic mechanism is hidden in the leading edge box section, and can be deployed as the slat is extended. Wherein, the cable is arranged inside the folding arm type motion mechanism, and the two ends of the cable are respectively connected to the electrical equipment and the power supply terminal. The folding arm type movement mechanism has a protective effect on the cable.

The advantage of the above-mentioned knuckle-arm type motion mechanism is that the knuckle-arm type kinematic mechanism occupies less space in the fixed leading edge compartment of the wing, so there is no space requirement for motion sweeping in the leading edge compartment during the movement.

The disadvantage of the above-mentioned foldable arm movement mechanism is that the foldable arm movement mechanism has a great influence on the structure of the fixed leading edge of the wing, and additional reinforcement ribs must be provided for the movement mechanism. The arm kinematics also open and close, which adversely affects the aerodynamic performance of the aircraft.

2. Rocker arm type motion mechanism between leading edge and slat

The rocker movement mechanism between the leading edge and the slat is arranged in a narrow area between the leading edge and the slat. With the retraction of the leading edge, the rocker movement mechanism between the leading edge and the slat does not occupy the space. Space within the leading edge box segment and the slat box segment.

The advantage of the rocker arm type motion mechanism between the leading edge and the slat is that the interface load transmitted by the rocker arm type motion mechanism between the leading edge and the slat to the structure is small, and because the rocker arm type motion mechanism between the leading edge and the slat It is arranged on the active surface of the slat, so it does not occupy the leading edge layout space.

The disadvantage of the rocker motion mechanism between the leading edge and the slat is that in order to meet the structure of the slat active surface of the mature model, it is necessary to make great changes for the installation of the rocker motion mechanism between the leading edge and the slat. , but also need to add a larger weight.

3. Telescopic sleeve type motion mechanism

The advantage of the telescopic sleeve type kinematic mechanism is that, similar to the rocker arm type kinematic mechanism between the leading edge and the slat, the telescopic sleeve type kinematic mechanism transmits less interface load to the structure.

The disadvantage of the telescopic sleeve type kinematic mechanism is that the telescopic sleeve type kinematic mechanism occupies a large space for the arrangement of the leading edge and is located in the high vibration area, while the telescopic form in the high vibration area has poor stability, which is easy to cause damage to the internal wiring harness. Wear, and the height space requirements of the leading edge of the wing are also relatively high.

In addition, other forms of cable mechanisms exist in the prior art, as follows:

1. CN106297995A (published on January 4, 2017) discloses a highly flexible sports cable, and introduces the internal composition of the cable. However, the present invention pays more attention to the motion mechanism itself in addition to the internal cables, so the prior art is completely different from the present invention.

2. CN106297972A (published on January 4, 2017) discloses a composite motion cable for a servo electric torque fastener. However, the present invention pays more attention to the motion mechanism itself in addition to the internal cables, so the prior art is completely different from the present invention.

3. US9187171B2 (published on November 17, 2015) discloses a telescopic mechanism for conducting flexible wire harnesses between two structures. The present invention, however, includes a rocker mechanical construction and motion cables within the construction. Moreover, in order to be suitable for the situation where the single-channel formed aircraft wing has a small space, the present invention is also designed with a special winding box to prevent the influence of the mechanism rotation during the movement and retraction process on the cable and structure.

4. "Mechanical Analysis of Telescopic Arm of Mining Single-arm Manipulator" (published in February 2015), this document discloses a single-arm manipulator for mining machinery. Although the telescopic form disclosed in this document is similar to the mechanism of the present invention, it is a manipulator and is driven by hydraulic pressure, while the present invention is a slave and has no power itself. Therefore, this document is also distinct from the present invention.

Obviously, none of the above-mentioned prior art documents can effectively solve the existing technical problems.

To install this mechanism on a mature model, it must be considered from the aspects of design realization, layout space, weight impact, and structural strength impact. Therefore, how to design a new rocker arm motion cable mechanism for electrical wiring harness arrangement in a narrow space such as an aircraft wing, which can not only reduce the impact on the aircraft structure and aerodynamics as much as possible, but also minimize the impact on the aircraft structure and aerodynamics. It is possible to reduce the impact on the weight of the aircraft, and at the same time to meet the wiring requirements in a narrow space such as an aircraft wing, which has become an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a new rocker arm type moving cable mechanism for arranging electrical wiring harnesses in narrow spaces such as aircraft wings, which is easy to install and maintain The influence of strength is small, the influence on the aerodynamic performance of the aircraft is small, and it is beneficial to reduce the weight of the aircraft structure.

In order to solve the above technical problems, the present invention provides a rocker type moving cable mechanism including: a mechanical and electromagnetic interference protective sleeve, the mechanical and electromagnetic interference protective sleeve is used for the cable arranged in the slat; a telescopic link; a mechanical and electromagnetic interference protective sleeve, the mechanical and electromagnetic interference protective sleeve is used for the cables arranged at the leading edge of the wing; the connector at the leading edge of the wing; the slat active surface bracket, the slat active surface bracket is used for connecting Slat active surface; wing fixed leading edge bracket for connecting wing leading edge box segments; spherical kinematic pair; rotary kinematic pair; slat connector, the slat connector is used for docking Electrical equipment and wiring harness in the slat; winding box, the winding box is respectively installed on the position of the rotating motion pair and the spherical motion pair; connecting piece, the connecting piece is used for the spherical motion The pair are connected to each other, wherein one end of the mechanical and electromagnetic interference shield is connected to the slat connector, and the other end is connected to the rotary motion pair, and the slat active surface bracket and the junction box are provided At the rotational motion pair, one end of the telescopic link is connected to the rotational motion pair, and the other end is connected to the spherical motion pair. The junction box is arranged at the spherical motion pair, and the mechanical And one end of the electromagnetic interference protective sleeve is connected to the spherical kinematic pair, and the other end is connected to the connector at the leading edge of the wing, and the fixed leading edge bracket of the wing and the junction box are arranged on the spherical kinematic pair. place.

Preferably, in the rocker arm type motion cable mechanism of the present invention, the telescopic link is made of stainless steel, preferably 316 stainless steel.

Preferably, in the rocker arm type motion cable mechanism of the present invention, the cable is a cable.

Therefore, compared with the prior art, the rocker arm type motion cable mechanism of the present invention has the feature of being installed in a narrow space. Adapt to the slat active surface motion cable arrangement requirements of various aircraft models. The rocker arm type moving cable mechanism of the present invention can not only reduce the impact on the structure and aerodynamics of the aircraft as much as possible, but also reduce the impact on the weight of the aircraft as much as possible. cabling requirements.

Description of drawings

FIG. 1 shows an axial perspective view of a rocker arm type motion cable mechanism according to a specific embodiment of the present invention.

FIG. 2 shows an assembly diagram of a rocker arm type motion cable mechanism according to a specific embodiment of the present invention.

FIG. 3 shows a schematic view of a rear view of the installation of the rocker arm type moving cable mechanism according to a specific embodiment of the present invention, wherein the rocker arm type moving cable mechanism of the present invention is in a state where the slats are retracted after installation.

4 shows a schematic side view of the installation of the rocker arm type moving cable mechanism according to a specific embodiment of the present invention, wherein the rocker arm type moving cable mechanism of the present invention is in a state where the slats are opened after installation.

Figure 5 shows a schematic diagram of the relative motion deformation of the wing under aerodynamic loads.

List of reference signs in the drawings in technical solutions and embodiments:

100． Rocker arm movement cable mechanism

1. Mechanical and EMI shields

2. Telescopic link

3. Mechanical and EMI shields

4. Connector at leading edge of wing

5. Connector at leading edge of wing

6. Slat active surface bracket

7. Wing fixed leading edge bracket

8. ball joint

9. ball joint

10. Rotary kinematic pair

11. Slat Connector

12. Slat Connector

13. Winding box

14. Winding box

15. Winding box

16. connector

Detailed ways

The specific embodiments of the present invention will be described below. It should be noted that, in the specific description of these embodiments, for the sake of brevity and conciseness, this specification may not describe all the features of the actual embodiments in detail. It should be understood that, in the actual implementation process of any embodiment, just as in the process of any engineering project or design project, in order to achieve the developer's specific goals, in order to meet the system-related or business-related constraints, Often a variety of specific decisions are made, which also vary from one implementation to another. Furthermore, it will also be appreciated that while such development efforts may be complex and tedious, for those of ordinary skill in the art to which this disclosure pertains, the techniques disclosed in this disclosure will Some changes in design, manufacture or production based on the content are just conventional technical means, and should not be construed that the content of the present disclosure is insufficient.

Unless otherwise defined, technical or scientific terms used in the claims and the specification shall have the ordinary meaning as understood by those with ordinary skill in the technical field to which this invention belongs. The terms "first", "second" and similar terms used in the description of the patent application and the claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. "A" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one. Words like "including" or "comprising" mean that the elements or items appearing before "including" or "including" cover the elements or items listed after "including" or "including" and their equivalents, and do not exclude other components or objects. Words like "connected" or "connected" are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

First, as shown in FIG. 1 , the figure shows an axial perspective view of a rocker arm type motion cable mechanism 100 according to a specific embodiment of the present invention. The rocker arm type motion cable mechanism 100 includes:

Mechanical and Electromagnetic Interference (EMI) shields for cables arranged in slats1;

Telescopic connecting rod 2, the telescopic connecting rod is made of stainless steel, preferably made of 316 stainless steel;

Mechanical and Electromagnetic Interference (EMI) shields for cables routed at the leading edge of the wing3;

Connectors 4 and 5 at the leading edge of the wing;

The slat active surface bracket 6 is used to connect the slat active surface;

The wing fixed leading edge bracket 7 is used to connect the leading edge box section of the wing;

Spherical motion pair 8, 9;

Rotary motion pair 10;

The slat connectors 11 and 12 are used to butt the electrical equipment and wiring harness in the slat;

Winding boxes 13, 14, 15, which are respectively installed at the positions of the rotary motion pair 10 and the spherical motion pair 8, 9, the cables are rotated in the winding box, thereby effectively avoiding the stress of axial movement;

A connecting piece 16 is used to connect the ball joints 8 and 9 to each other.

Please refer to FIG. 1 in conjunction with FIG. 2 , wherein FIG. 2 shows an assembly diagram of a rocker arm type motion cable mechanism 100 according to a specific embodiment of the present invention. It can be clearly seen from FIGS. 1 and 2 that one end of the mechanical and electromagnetic interference shield 1 is connected with the slat connectors 11 , 12 , and the other end is connected to the rotating kinematic pair 10 . A slat movable surface bracket 6 and a junction box 13 are arranged at the rotary motion pair 10 . One end of the telescopic link 2 is connected to the rotary motion pair 10 , and the other end is connected to the spherical motion pair 8 . The length of the telescopic link 2 does not change, it extends when the slat is opened, and is accommodated in the leading edge cabin of the wing when retracted. The ball joint 8 is provided with a junction box 14 . One end of the mechanical and electromagnetic interference protection sleeve 3 is connected to the spherical motion pair 9, and the other end is connected to the connectors 4 and 5 at the leading edge of the wing. A wing-fixing leading edge bracket 7 and a junction box 15 are provided at the spherical joint 9 . The ball joints 8 and 9 are connected to each other by a connecting piece 16 .

Still as shown in FIG. 1 , when the rocker arm type motion cable mechanism 100 of the present invention is installed on the wing, the wing fixing leading edge bracket 7 is fixed on the leading edge rib (not shown) of the wing, The slat active surface bracket 6 is fixed on the slat beam (not shown). The connectors 4 and 5 at the leading edge of the wing are connected to the main channel (not shown) at the leading edge of the wing, and the mechanical and electromagnetic interference shield 1 is arranged in the main channel of the slat. The slat connectors 11 and 12 are connected to the electrical equipment in the slat.

Among them, it is worth mentioning that, in the rocker arm type motion cable mechanism 100 of the present invention, the telescopic link 2 makes full use of the spanwise spatial arrangement of the leading edge of the wing, however, this arrangement will cause the slat to move during the movement process. The relative rotation occurs between the middle telescopic link 2 and the slat movable surface, so the present invention specially sets a rotary motion pair 10 and a winding box 13 between the telescopic link 2 and the slat movable surface bracket 6 to effectively prevent the The effect of such rotation on cables and structures. Therefore, compared with the folding arm type movement mechanism and the telescopic sleeve type movement mechanism in the prior art, the rocker arm type movement cable mechanism of the present invention has the advantages of convenient installation and maintenance, little influence on the structural strength, and influence on the aerodynamic performance of the aircraft. It has obvious advantages such as small size, which is conducive to reducing the weight of the aircraft structure.

When the slat is retracted, the rocker arm type motion cable mechanism 100 of the present invention will follow the movement of the slat, and the spherical motion pairs 8 and 9 and the rotary motion pair 10 can ensure the forward and backward movement and up and down movement of the rocker arm type motion cable mechanism 100 Flexibility of movement. The cables are rotated within the spools 13, 14 and 15 so as to effectively avoid the stress of axial movement. Specifically, please refer to FIGS. 3 and 4 , wherein FIG. 3 shows a schematic diagram of a rear view of the installation of the rocker arm type motion cable mechanism 100 of the present invention, wherein the rocker arm type motion cable mechanism 100 is in the slat retracted state after the installation is completed. 4 shows a schematic side view of the installation of the rocker arm type movement cable mechanism 100 of the present invention, wherein the rocker arm type movement cable mechanism 100 is in a state where the slats are opened after installation.

Figure 5 shows a schematic diagram of the relative motion deformation of the wing under aerodynamic loads. According to the relevant international regulations on the design of civil aircraft, the minimum movement gap between the moving parts and the fixed parts in the fuselage shall not be less than 12.7 mm, and considering that the moving parts and their adjacent objects will undergo relative deformation during use, it is determined when determining In the process of the skin of the leading edge of the wing and the opening size of the front spar, the configuration difference of the actual model must be considered, as well as the relative deformation of the aerodynamic lower slat and the leading edge of the wing upward (as shown by the dotted line in Figure 5). Show). In addition, the specific motion gap should be judged and realized through experiments or actual modeling.

In summary, the rocker arm type motion cable mechanism 100 of the present invention is installed on a mature model, and the following methods are used in actual operation:

1. The telescopic link 2 of the rocker arm type motion cable mechanism 100 of the present invention must be designed to be connected to the slat moving surface through structural openings, and to ensure that the rocker arm type of the present invention moves during the complete slat retraction process. The telescopic link 2 of the cable mechanism 100 always maintains a distance of 12.7 mm from the structural opening. For this purpose, it is necessary to simulate the slat opening process through CATIA, and capture the geometry of the telescopic link 2 passing through the structural opening at different positions of the slat. The geometric curve of the telescopic link 2 is obtained by fitting several point curves.

2. The rocker arm type motion cable mechanism 100 of the present invention is based on the available space at the leading edge rib of the wing, the aerodynamic load borne by the rocker arm type motion cable mechanism 100, the acceleration load at the installation position of the mechanism, and the installation, Considering the dismantling requirements and many other factors, the shape, fastener position and specification strength of the wing fixed leading edge bracket 7 are comprehensively designed.

3. The slat active surface bracket 6 of the rocker arm type movement cable mechanism 100 of the present invention can be determined according to the installation method of the wire harness on the slat active surface in the movement mechanism, and can be designed in cooperation with the slat structure.

All in all, in order to be suitable for the spatial arrangement of the currently mature mainstream models, the rocker arm type motion cable mechanism of the present invention is composed of a plurality of rotary motion pairs and spherical motion pairs. The slat movable surface brackets and the wing fixed leading edge brackets at both ends of the rocker arm type moving cable mechanism of the present invention are respectively connected to the slat movable surface and the wing box section. The rocker arm type moving cable mechanism of the present invention can follow the movement of the movable surface of the slat. The wire harness is arranged in the rocker arm type motion cable mechanism of the present invention, and a winding box is designed at the position of each rotary motion pair and spherical motion pair of the mechanism of the present invention, and the wire harness rotates in the winding box, thereby effectively avoiding the axial direction. Stress of movement. The rocker arm type motion cable mechanism of the present invention has the characteristics of installation in a narrow space, and can adapt to the slat active surfaces of various aircraft types by adjusting the parameter design of each rotary motion pair and the spherical motion pair, and the size and shape design of each structural arm. Motion cable layout requirements. The rocker arm type moving cable mechanism of the present invention can not only reduce the impact on the structure and aerodynamics of the aircraft as much as possible, but also reduce the impact on the weight of the aircraft as much as possible. cabling requirements.

The preferred embodiments of this invention have been described in detail above, but it should be understood that other advantages and modifications will readily occur to those skilled in the art after reading the foregoing teachings of this invention. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Therefore, those skilled in the art can reasonably combine or modify the elements of the above-described embodiments so as to make changes without departing from the spirit or scope of the general inventive concept of the present invention as defined by the appended claims and their equivalents. Various modifications.

Claims (4)

1. A rocker arm type motion cable mechanism (100) comprising: a mechanical and electromagnetic interference shield (1) for cables arranged in the slat; Telescopic link (2); a mechanical and electromagnetic interference shield (3) for cables arranged at the leading edge of the wing; Connectors (4, 5) at the leading edge of the wing; a slat active surface bracket (6), the slat active surface bracket (6) is used for connecting the slat active surface; The wing fixed leading edge bracket (7), the wing fixed leading edge bracket (7) is used to connect the wing leading edge box section; Spherical kinematic pair (8, 9); Rotary kinematic pair (10); Slat connectors (11, 12), the slat connectors (11, 12) are used for butt-jointing electrical equipment and wire harnesses in the slat; Winding boxes (13, 14, 15), the winding boxes (13, 14, 15) are respectively installed at the positions of the rotating motion pair (10) and the spherical motion pair (8, 9); a connecting piece (16) for connecting the spherical kinematic pairs (8, 9) to each other, Wherein, one end of the mechanical and electromagnetic interference protective cover (1) is connected with the slat connectors (11, 12), and the other end is connected with the rotating motion pair (10), The slat active surface bracket (6) and the junction box (13) are arranged at the rotary motion pair (10), One end of the telescopic link (2) is connected to the rotating motion pair (10), and the other end is connected to the spherical motion pair (8), The junction box (14) is arranged at the spherical motion pair (8), One end of the mechanical and electromagnetic interference protection sleeve (3) is connected to the spherical motion pair (9), and the other end is connected to the connector (4, 5) at the leading edge of the wing, The wing fixed leading edge bracket (7) and the junction box (15) are arranged at the spherical motion pair (9). 2. The rocker arm type motion cable mechanism (100) according to claim 1, wherein the telescopic link (2) is made of stainless steel. 3. The rocker arm type motion cable mechanism (100) according to claim 2, wherein the stainless steel is 316 stainless steel. 4. The rocker arm motion cable mechanism (100) of claim 1, wherein the cable is a cable.

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