Bearing wall supporting box section

Abstract

The invention belongs to the technical field of airplane structural strength tests, and relates to a bearing wall supporting box section. The device comprises a bottom plate (1), a vertical rib plate (2), a horizontal rib plate (3), a horizontal welding plate (4), a vertical welding plate (5) and a cover plate (6), wherein the vertical rib plates (2) and the horizontal rib plates (3) are welded in a staggered mode to form a multi-grid structure, in each grid, the horizontal welding plates (4) are welded to the horizontal rib plates (3), the vertical welding plates (5) are welded to the vertical rib plates (2), the multi-grid structure is welded to the bottom plate (1), and double grooves (7) are formed in one sides of the horizontal welding plates (4) and the vertical welding plates (5). The double grooves (7) protrude out of the end face of the multi-grid structure on the side, away from the bottom plate (1), of the multi-grid structure so as to be inserted into strip-shaped holes (61) reserved in the cover plate (6) in a matched mode to be welded to the cover plate (6). The bearing wall supporting box section is firm and reliable in welding, smooth in outer surface and convenient to manufacture.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft structure strength testing, and in particular relates to a load-bearing wall support box segment. Background Art

[0002] When conducting ground strength tests on aircraft structural parts, it is necessary to process support box segments to fix the test pieces. The test pieces are assembled on the outer end faces of the support box segments. The support box segments are fixed to the load-bearing walls of the factory building through load-bearing wall bolts, and the test loads are applied by installing actuators on the load-bearing floor. At present, there are two ways to manufacture support box segments. The first manufacturing method is: first, weld the bottom plate, vertical ribs and horizontal ribs together in an open welding space; after covering the cover plate, weld the vertical ribs and horizontal ribs in the open position outside the support box segment to the cover plate. In this manufacturing method, the vertical ribs and horizontal ribs inside the support box segment are not welded to the cover plate, and the strength of the support box segment is low, which makes it difficult to meet the strength requirements of the test piece support. The second manufacturing method is: first, weld the bottom plate, vertical ribs and horizontal ribs together in an open welding space; design and process multiple small cover plates to cover each rectangular area surrounded by the vertical ribs and horizontal ribs, and cover one-third of the geometric dimensions of the vertical ribs and horizontal ribs; finally, weld all the small cover plates to the exposed vertical ribs and horizontal ribs. This manufacturing method has large welding deformation, and it is difficult to ensure that all the small cover plates are in the same plane, which does not meet the assembly requirements of the test piece. The design of the support box section of the load-bearing wall has always troubled the fixation of aircraft component test pieces. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present application provides a load-bearing wall support box segment, which mainly includes a bottom plate, a vertical rib plate, a horizontal rib plate, a horizontal welding plate, a vertical welding plate and a cover plate;

[0004] Among them, the vertical rib plates and the horizontal rib plates are welded alternately to form a multi-grid structure. In each grid, at least one horizontal welding plate is welded on the horizontal rib plate, and at least one vertical welding plate is welded on the vertical rib plate. The multi-grid structure is welded to the bottom plate. The horizontal welding plates and the vertical welding plates both form double grooves on one side. The double grooves of each horizontal welding plate and each vertical welding plate protrude from the end face of the multi-grid structure on the side of the multi-grid structure away from the bottom plate, so as to be inserted into the strip holes reserved on the cover plate for adaptation and then welded to the cover plate.

[0005] Preferably, in each grid, the length of the horizontal welding plate is 60 mm shorter than the length of the horizontal rib plate. When the horizontal welding plate is welded to the horizontal rib plate, the horizontal welding plate is located in the middle of the horizontal rib plate along the length direction, and both ends of the horizontal welding plate are 30 mm away from the end face of the horizontal rib plate.

[0006] Preferably, the length of the vertical welding plate is 60 mm shorter than that of the vertical rib plate. When the vertical welding plate is welded to the vertical rib plate, the horizontal welding plate is located in the middle of the vertical rib plate along the length direction, and both ends of the vertical welding plate are 30 mm away from the end face of the vertical rib plate.

[0007] Preferably, the depth of the overlapping area between the horizontal welding plate and the horizontal rib plate is 60 mm, the height of the side of the horizontal welding plate with a double groove protruding from the end face of the horizontal rib plate is 20 mm, the depth of the overlapping area between the vertical welding plate and the vertical rib plate is 60 mm, and the height of the side of the vertical welding plate with a double groove protruding from the end face of the vertical rib plate is 20 mm.

[0008] Preferably, the multi-grid structure is divided into an upper section and a lower section based on horizontal symmetry along the extension direction of the vertical ribs, and the horizontal ribs in each grid of the upper section have only horizontal welding plates arranged above them, and the horizontal ribs in each grid of the lower section have only horizontal welding plates arranged below them.

[0009] Preferably, when the double groove is welded to the cover plate, the weld is filled to the outer surface of the cover plate and then ground flat.

[0010] Preferably, a plurality of first-type through holes are provided on the bottom plate and the cover plate, serving as assembly bolt installation holes when the load-bearing wall support box section is installed to the load-bearing wall, and a plurality of second-type through holes are provided on the bottom plate and the cover plate, serving as assembly bolt installation holes when the load-bearing wall support box section is assembled with the aircraft test piece.

[0011] Preferably, the bottom plate, vertical rib plate, horizontal rib plate, horizontal welding plate, vertical welding plate and cover plate are all made of Q345 steel.

[0012] The load-bearing wall support box section of the present application is firmly and reliably welded, has a smooth outer surface, is easy and smooth to manufacture, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an unwelded cover plate of a preferred embodiment of the load-bearing wall support box section of the present application.

[0014] Figure 2 For this application Figure 1 A schematic diagram of the box section structure after welding the cover plate of the illustrated embodiment.

[0015] Figure 3 For this application Figure 1 A side view of the welding of the welding plate to the ribs and the cover plate of the illustrated embodiment.

[0016] Figure 4 For this application Figure 1 Front view of the welding of the welding plate, ribs and cover plate of the illustrated embodiment.

[0017] Figure 5 Schematic diagram of the horizontal welded plate structure.

[0018] Figure 6 Schematic diagram of the cover structure.

[0019] Among them, 1-bottom plate, 2-vertical rib plate, 3-horizontal rib plate, 4-horizontal welding plate, 5-vertical welding plate, 6-cover plate, 61-strip hole, 7-double groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0021] The present application provides a load-bearing wall support box segment, such as Figure 1-Figure 6 As shown, it mainly includes a bottom plate 1, a vertical rib plate 2, a horizontal rib plate 3, a horizontal welding plate 4, a vertical welding plate 5 and a cover plate 6.

[0022] Among them, the vertical ribs 2 and the horizontal ribs 3 are welded alternately to form a multi-grid structure. In each grid, at least one horizontal welding plate 4 is welded to the horizontal rib 3, and at least one vertical welding plate 5 is welded to the vertical rib 2. The multi-grid structure is welded to the base plate 1. The horizontal welding plates 4 and the vertical welding plates 5 both form a double groove 7 on one side. The double grooves 7 of each horizontal welding plate 4 and each vertical welding plate 5 protrude from the end face of the multi-grid structure on the side of the multi-grid structure away from the base plate 1, so as to be inserted into the strip hole 61 reserved on the cover plate 6 to be welded to the cover plate 6.

[0023] The present application firstly processes the above-mentioned parts by machining, then welds the vertical welding plate 5 on the vertical rib plate 2, welds the horizontal welding plate 4 on the horizontal rib plate 3, and then welds the vertical rib plate 2 and the horizontal rib plate 3 as a whole to form a multi-grid structure, and the side of the multi-grid structure without the double groove 7 is welded on the bottom plate 1 to form a structure as shown in FIG. Figure 1 The structural member shown in the figure is then covered with a cover plate 6, as shown in the figure. Figure 6 As shown, a strip hole 61 is reserved on the cover plate 6. Figure 5As shown, the top of the horizontal welding plate 4 has a double groove 7, and similarly, the vertical welding plate 5 also has a double groove 7. The double grooves 7 of the horizontal welding plate 4 and the vertical welding plate 5 can be inserted into the strip holes of the cover plate 6, and then the horizontal welding plate 4, the vertical welding plate 5 and the cover plate 6 are welded through the strip holes to form Figure 2 The bearing wall support box section is shown.

[0024] In some optional embodiments, within each grid, the length of the horizontal welding plate 4 is 60 mm smaller than the length of the horizontal rib plate 3. When the horizontal welding plate 4 is welded to the horizontal rib plate 3, along the length direction, the horizontal welding plate 4 is located in the middle of the horizontal rib plate 3, and both ends of the horizontal welding plate 4 are 30 mm away from the end face of the horizontal rib plate 3.

[0025] In some optional embodiments, the length of the vertical welding plate 5 is 60 mm shorter than the length of the vertical rib plate 2. When the vertical welding plate 5 is welded to the vertical rib plate 2, along the length direction, the horizontal welding plate 4 is located in the middle of the vertical rib plate 2, and both ends of the vertical welding plate 5 are 30 mm away from the end face of the vertical rib plate 2.

[0026] The above two embodiments refer to Figure 4 , Figure 4 The size of c in the middle is 30mm.

[0027] It should also be noted that Figure 1 In the figure, the vertical rib plate 2 is usually an integral structure that runs through the top and bottom, while the horizontal rib plate 3 is usually divided into left and right sections. Therefore, the width of the horizontal welding plate 4 is usually 60 mm smaller than the horizontal rib plate 3, so as to ensure that after the horizontal welding plate 4 is welded to the horizontal rib plate 3, both ends of the horizontal welding plate 4 are 30 mm away from the vertical rib plate 2, and the width of the vertical welding plate 5 is usually 60 mm smaller than the divided section of the vertical rib plate 2, so as to ensure that after the vertical welding plate 5 is welded to the vertical rib plate 2, both ends of the vertical welding plate 5 are 30 mm away from the horizontal rib plate 3.

[0028] In some optional embodiments, the depth of the overlapping area between the horizontal welding plate 4 and the horizontal rib plate 3 is 60 mm, the height of the side of the horizontal welding plate 4 with the double groove 7 protruding from the end face of the horizontal rib plate 3 is 20 mm, the depth of the overlapping area between the vertical welding plate 5 and the vertical rib plate 2 is 60 mm, and the height of the side of the vertical welding plate 5 with the double groove 7 protruding from the end face of the vertical rib plate 2 is 20 mm.

[0029] This embodiment refers to Figure 3 , Figure 3 In the figure, the size of a is 60 mm and the size of b is 20 mm.

[0030] In some optional embodiments, the multi-grid structure is divided into an upper section and a lower section along the extension direction of the vertical rib plate 2 based on horizontal symmetry, and the horizontal rib plate 3 in each grid of the upper section has only a horizontal welded plate 4 arranged above it, and the horizontal rib plate 3 in each grid of the lower section has only a horizontal welded plate 4 arranged below it.

[0031] In some optional embodiments, the position and size of the strip hole 61 on the cover plate 6 are the same as the position and size of the horizontal welding plate 4 and the vertical welding plate 5 welded on the horizontal rib plate 3 and the vertical rib plate 2, ensuring that the protruding portion of each welding plate can be embedded in the strip hole 61 of the cover plate 6.

[0032] In some optional embodiments, the vertical ribs 2 and horizontal ribs 3 at the open positions outside the support box section of the load-bearing wall are not arranged with vertical welding plates 5 and horizontal welding plates 4, and the vertical ribs 2 and horizontal ribs 3 are directly welded together with the cover plate 6.

[0033] In some optional embodiments, when the double groove 7 is welded to the cover plate 6 , the weld is filled to the outer surface of the cover plate 6 and then ground flat.

[0034] In some optional embodiments, a plurality of first-type through holes are provided on the base plate 1 and the cover plate 6, which serve as assembly bolt installation holes when the load-bearing wall support box section is installed to the load-bearing wall, and a plurality of second-type through holes are provided on the base plate 1 and the cover plate 6, which serve as assembly bolt installation holes when the load-bearing wall support box section is assembled with the aircraft test piece.

[0035] refer to Figure 1 , Figure 2 and Figure 6 The bottom plate 1 is a rectangular steel plate, and the two outer rows of first-class through holes processed thereon are used to support the connection between the box section and the load-bearing wall, and the inner circle of second-class through holes is used to support the box section and the aircraft test piece when the assembly bolts are installed. Correspondingly, the cover plate 6 is a rectangular steel plate, and the large holes processed thereon are first-class through holes, which are used to support the connection between the box section and the load-bearing wall, and the small holes processed thereon are second-class through holes, which are used to support the connection between the box section and the aircraft test piece.

[0036] In some optional embodiments, the bottom plate 1, the vertical rib plate 2, the horizontal rib plate 3, the horizontal welding plate 4, the vertical welding plate 5 and the cover plate 6 are all made of Q345 steel. The thickness of the bottom plate 1, the vertical rib plate 2, the horizontal rib plate 3 and the cover plate 6 is preferably 30 mm, and the thickness of the horizontal welding plate 4 and the vertical welding plate 5 is preferably 20 mm. The vertical rib plate 2, the horizontal rib plate 3, the horizontal welding plate 4 and the vertical welding plate 5 each usually have two specifications, and their lengths are different.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A bearing wall support box section, characterized in that: It comprises a bottom plate (1), a vertical rib plate (2), a horizontal rib plate (3), a horizontal welding plate (4), a vertical welding plate (5) and a cover plate (6); The vertical rib plates (2) and the horizontal rib plates (3) are welded in an alternating manner to form a multi-grid structure. In each grid, at least one horizontal welding plate (4) is welded to the horizontal rib plate (3), and at least one vertical welding plate (5) is welded to the vertical rib plate (2). The multi-grid structure is welded to the bottom plate (1). The horizontal welding plates (4) and the vertical welding plates (5) both form a double groove (7) on one side. The double groove (7) of each horizontal welding plate (4) and each vertical welding plate (5) protrudes from the end face of the multi-grid structure on the side of the multi-grid structure away from the bottom plate (1), so as to be inserted into the strip hole (61) reserved on the cover plate (6) and then welded to the cover plate (6).

2. The bearing wall support box section according to claim 1, characterized in that: In each grid, the length of the horizontal welding plate (4) is 60 mm shorter than the length of the horizontal rib plate (3). When the horizontal welding plate (4) is welded to the horizontal rib plate (3), along the length direction, the horizontal welding plate (4) is located in the middle of the horizontal rib plate (3), and the two ends of the horizontal welding plate (4) are 30 mm away from the end face of the horizontal rib plate (3).

3. The bearing wall support box section according to claim 1, characterized in that: The length of the vertical welding plate (5) is 60 mm shorter than the length of the vertical rib plate (2). When the vertical welding plate (5) is welded to the vertical rib plate (2), along the length direction, the horizontal welding plate (4) is located in the middle of the vertical rib plate (2), and the two ends of the vertical welding plate (5) are 30 mm away from the end surface of the vertical rib plate (2).

4. The bearing wall support box section according to claim 1, characterized in that: The depth of the overlapping area between the horizontal welding plate (4) and the horizontal rib plate (3) is 60 mm, and the height of the side of the horizontal welding plate (4) with the double groove (7) protruding from the end face of the horizontal rib plate (3) is 20 mm. The depth of the overlapping area between the vertical welding plate (5) and the vertical rib plate (2) is 60 mm, and the height of the side of the vertical welding plate (5) with the double groove (7) protruding from the end face of the vertical rib plate (2) is 20 mm.

5. The bearing wall support box section according to claim 1, characterized in that: The multi-grid structure is divided into an upper section and a lower section based on horizontal symmetry along the extension direction of the vertical rib plate (2); the horizontal rib plates (3) in each grid of the upper section have horizontal welding plates (4) arranged only above them, and the horizontal rib plates (3) in each grid of the lower section have horizontal welding plates (4) arranged only below them.

6. The bearing wall support box section according to claim 1, characterized in that: When the double groove (7) and the cover plate (6) are welded, the weld is filled to the outer surface of the cover plate (6) and then ground flat.

7. The bearing wall support box section according to claim 1, characterized in that: A plurality of first-type through holes are provided on the bottom plate (1) and the cover plate (6), serving as mounting holes for assembly bolts when the load-bearing wall support box section is mounted on the load-bearing wall. A plurality of second-type through holes are provided on the bottom plate (1) and the cover plate (6), serving as mounting holes for assembly bolts when the load-bearing wall support box section is assembled with an aircraft test piece.

8. The bearing wall support box section according to claim 1, characterized in that: The bottom plate (1), the vertical rib plate (2), the horizontal rib plate (3), the horizontal welding plate (4), the vertical welding plate (5) and the cover plate (6) are all made of Q345 steel.

Images