CN211543861U

CN211543861U - Load diffusion piece connected with wing spar

Info

Publication number: CN211543861U
Application number: CN201922301849.3U
Authority: CN
Inventors: 党敏; 余明
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-22
Anticipated expiration: 2029-12-19

Abstract

The utility model belongs to the field of airplane structure design, in particular to a load diffusion piece connected with a wing spar; comprises a diffusion piece a (3) and a diffusion piece b (4); the right side face of the diffusion piece a (3), the wing ribs (5) and the left side face of the diffusion piece b (4) are fixedly connected through bolts, the left side face of the diffusion piece a (3) is fixedly connected with the back beam (2), the right side face of the diffusion piece b (4) is fixedly connected with the back beam (2), and the cross section of the formed assembly is triangular. Under the conditions of limited structural space and constrained size and position, the load diffusion piece is designed into a triangular assembly, two ends of the triangle are connected with the beam and the suspension support arm, and the other end of the triangle is connected with the rib; the diffuser web is perforated and stiffened for weight reduction. The form diffuser connects the suspension support arms, beams, wall plates and ribs, and effectively ensures the effective transfer of load to the wall plates and the ribs. The design has high force transmission efficiency and light weight, and meets the assembly requirement.

Description

Load diffusion piece connected with wing spar

Technical Field

The utility model belongs to aircraft structural design field, concretely relates to load diffusion spare of being connected with wing spar.

Background

The airplane is provided with flaperon hanging arms which are generally connected with wing back beams, and the back beams need to be locally reinforced for diffusing the concentrated load, such as adding a diffusion angle box on the inner side of the beams or connecting with inner ribs of box sections. However, the size of some suspension arms is large, the span is large, and the size of the diffusion piece of the beam needs to be correspondingly increased, so that the number of parts is increased, and the weight is increased more.

Disclosure of Invention

The utility model aims at: on the premise of meeting the requirement of diffusion concentrated load, the structure form is optimized, and the structure weight is reduced.

The technical scheme of the utility model: a load diffuser for connection to a wing spar, comprising diffuser a3, diffuser b 4; the right side of the diffuser a3, the wing rib 5 and the left side of the diffuser b4 are fixedly connected through bolts, the left side of the diffuser a3 is fixedly connected with the back beam 2, the right side of the diffuser b4 is fixedly connected with the back beam 2, and the cross section of the formed assembly is triangular.

The diffuser a3 and the diffuser b4 are plate-shaped structures, and a rectangular hole is arranged in the middle.

The upper and lower ends of the rectangular holes of the diffusing piece a3 and the diffusing piece b (4) are respectively provided with a rectangular groove.

One corner of the right side surface of the diffusing piece a3 and the right side surface of the diffusing piece b4 is a trapezoidal surface.

Reinforcing ribs are added in the vertical direction of the sides of the rectangular holes in the middle of the diffusing pieces a3 and b 4.

The reinforcing ribs are near the end where the diffusing pieces a3 and b4 are connected to the rib 5.

The utility model has the advantages that: under the conditions of limited structural space and constrained size and position, the load diffusion piece is designed into a triangular assembly, two ends of the triangle are connected with the beam and the suspension support arm, and the other end of the triangle is connected with the rib; the diffuser web is perforated and stiffened for weight reduction. The form diffuser connects the suspension support arms, beams, wall plates and ribs, and effectively ensures the effective transfer of load to the wall plates and the ribs. The design has high force transmission efficiency and light weight, and meets the assembly requirement.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic view of the assembly state of the present invention

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, a load diffuser for connection to a wing spar includes diffuser a3, diffuser b 4; the right side of the diffuser a3, the wing rib 5 and the left side of the diffuser b4 are fixedly connected through bolts, the left side of the diffuser a3 is fixedly connected with the back beam 2, the right side of the diffuser b4 is fixedly connected with the back beam 2, and the cross section of the formed assembly is triangular. The diffusing piece a3 and the diffusing piece b4 are of plate-shaped structures, the middle of the diffusing piece a3 and the diffusing piece b4 is provided with a rectangular hole, four walls form four surfaces, and the upper end and the lower end of the rectangular hole in the middle are respectively provided with a rectangular groove for transmitting the load of the suspension arm 1; one corner of the right side surface of the diffusion piece a3 and the right side surface of the diffusion piece b4 is a trapezoidal surface, so that the connection of the right side surface of the diffusion piece a3, the wing rib 5 and the diffusion piece b4 is more attached; reinforcing ribs are added in the vertical direction of the sides of the rectangular holes in the middle of the diffusion pieces a3 and b4, and the reinforcing ribs are close to one ends, connected with the ribs 5, of the diffusion pieces a3 and b 4.

Claims

1. A load diffuser element for connection to a wing spar, comprising a diffuser element a (3), a diffuser element b (4); the right side face of the diffusion piece a (3), the wing ribs (5) and the left side face of the diffusion piece b (4) are fixedly connected through bolts, the left side face of the diffusion piece a (3) is fixedly connected with the back beam (2), the right side face of the diffusion piece b (4) is fixedly connected with the back beam (2), and the cross section of the formed assembly is triangular.

2. A load diffuser element for connection to a wing spar as claimed in claim 1, wherein the diffuser elements a (3) and b (4) are of plate-like configuration with a rectangular aperture in the middle.

3. A load diffuser element for attachment to a wing spar as claimed in claim 1, wherein the rectangular holes in the diffuser element a (3) and diffuser element b (4) each have a rectangular slot at each of their upper and lower ends.

4. A load diffuser element for connection to a wing spar as claimed in claim 1, wherein the right side of diffuser element a (3) and the right side of diffuser element b (4) are trapezoidal in shape at one corner.

5. A load diffuser element for attachment to a wing spar as claimed in claim 1, wherein stiffeners are added to the diffuser element a (3) and diffuser element b (4) perpendicular to the sides of the rectangular hole in the middle.

6. A load diffuser element for connection to a wing spar as claimed in claim 5, wherein the stiffener is located adjacent the end of the diffuser element a (3) and diffuser element b (4) to which the rib (5) is connected.