Lining plate fixing support used for being installed on machine body bulkhead
By designing a liner fixing bracket for the fuselage bulkhead, using filler and inclined plates to enhance connection strength, and reinforcing ribs to enhance structural strength, the problem of unstable connection between the fixing bracket and the bulkhead during aircraft modification was solved, achieving a stable connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN AIRCRAFT MAINTENANCE ENG CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-12
AI Technical Summary
During the aircraft modification process, the step depression on the fuselage frame caused the connection between the fixed bracket and the frame to be unstable, resulting in gaps and affecting the connection stability.
Design a liner fixing bracket for fuselage frame, comprising a connecting plate, a filling part, an inclined plate and reinforcing ribs. The filling part is tightly attached to the frame, the inclined plate enhances the connection strength, and the rivet connection achieves a stable installation.
This achieves a stable connection between the fixed bracket and the partition frame, enhancing the connection strength and stability, and avoiding connection instability caused by step depressions.
Smart Images

Figure CN224225282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft maintenance technology, specifically to a liner fixing bracket for installation on the fuselage frame. Background Technology
[0002] In the process of converting a passenger plane into a cargo plane, a liner needs to be installed on the bulkhead inside the fuselage. When installing the liner on the bulkhead, a fixing bracket is needed to connect the bulkhead and the liner. However, due to the different aircraft models, some fuselage bulkheads have stepped recesses. If the fixing bracket is directly installed on the stepped recess, a gap will be left between the rivet holes on the stepped recess and the fixing bracket, resulting in an unstable connection between the fixing bracket and the bulkhead. Utility Model Content
[0003] The purpose of this utility model is to provide a liner fixing bracket for installation on the body frame, which can stably connect the fixing bracket to the frame, thereby improving the stability of the connection between the frame and the liner.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following solution:
[0005] A liner fixing bracket for mounting on a fuselage frame includes a connecting plate for connecting to the frame and the liner respectively. The connecting plate has through-holes for rivets, and its front end face has a filling portion for filling a stepped recess in the frame. The shape and thickness of the filling portion are the same as the shape and depth of the stepped recess. Its function is to ensure that the connecting plate fits tightly against the frame, thereby securing the connection between the connecting plate and the frame.
[0006] Furthermore, the connecting plate is a long, straight strip, and it has an inclined plate that is tilted to the side of the connecting plate, with the inclined plate and the connecting plate lying in the same plane. Its function is to enhance the connection strength between the inclined plate and the partition frame by setting the inclined plate.
[0007] Furthermore, the inclined plate is located on the right side of the front end face of the connecting plate, and the left end of the front end face of the connecting plate is provided with a left convex plate for setting rivet holes.
[0008] Furthermore, the inclined plate is located on the upper side of the front end face of the connecting plate, the filling part is located on the lower side of the front end face of the connecting plate, and the lower end of the filling part is provided with a lower protruding plate for setting rivet holes.
[0009] Furthermore, the lower convex plate includes a primary lower convex plate and a secondary lower convex plate, with the distance between the secondary lower convex plate and the upper end of the connecting plate being greater than the distance between the primary lower convex plate and the upper end of the connecting plate. By configuring the left convex plate, the primary lower convex plate, and the secondary lower convex plate, rivets can be positioned at the edge of the connecting plate, increasing the rivet placement range and enhancing the connection strength between the connecting plate and the partition frame.
[0010] Furthermore, the upper left end of the connecting plate is provided with an upper protrusion plate.
[0011] Furthermore, reinforcing ribs are provided on the rear end face of the connecting plate. Their function is to enhance the overall structural strength of the connecting plate and prevent it from bending.
[0012] Furthermore, the reinforcing rib includes a main body located at the upper end of the rear end face of the connecting plate, the main body extending from the left end to the right end of the rear end face of the connecting plate.
[0013] Furthermore, the reinforcing rib includes an oblique reinforcing rib disposed on the rear end face of the inclined plate and a vertical reinforcing rib disposed on the rear end of the upper convex plate. The oblique reinforcing rib is inclined to the main reinforcing rib, and the vertical reinforcing rib is perpendicular to the main reinforcing rib.
[0014] Furthermore, the rivet holes are separated from the reinforcing ribs.
[0015] The beneficial effects of this utility model are:
[0016] 1. The filling part allows the connecting plate to fit tightly against the partition frame, thus ensuring a stable connection between the connecting plate and the partition frame;
[0017] 2. The inclined plate enhances the connection strength between the inclined plate and the partition frame. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure with the front end facing forward, as shown in Example 1.
[0019] Figure 2 This is a schematic diagram of the three-dimensional structure with the rear end facing forward, as shown in Example 1.
[0020] Reference numerals: 1. Connecting plate; 2. Rivet hole; 3. Filler part; 4. Inclined plate; 5. Left convex plate; 6. Primary lower convex plate; 7. Secondary lower convex plate; 8. Upper convex plate; 9. Main reinforcing rib; 10. Inclined reinforcing rib; 11. Vertical reinforcing rib. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.
[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example 1
[0025] A liner mounting bracket for mounting on a fuselage frame, such as Figure 1 As shown, the assembly includes a connecting plate 1 for connecting to the partition and the backing plate respectively. The connecting plate 1 has rivet holes 2 extending through it. The front end face of the connecting plate 1 has a filling portion 3 for filling the stepped recesses on the partition. The shape and thickness of the filling portion 3 are the same as the shape and depth of the stepped recesses. Its function is to ensure that the connecting plate 1 fits tightly against the partition, thereby making the connection between the connecting plate 1 and the partition stable.
[0026] Specifically, such as Figure 1 As shown, the connecting plate 1 is a long, straight strip, and an inclined plate 4 is provided on the connecting plate 1 at an angle to it. The inclined plate 4 and the connecting plate 1 are located in the same plane. Its function is to enhance the connection strength between the inclined plate 4 and the partition frame by setting the inclined plate 4.
[0027] Specifically, such as Figure 1 As shown, the inclined plate 4 is located on the right side of the front end face of the connecting plate 1, and the left end of the front end face of the connecting plate 1 is provided with a left convex plate 5 for setting the rivet hole 2.
[0028] Specifically, such as Figure 1 As shown, the inclined plate 4 is located on the upper side of the front end face of the connecting plate 1, and the filling part 3 is located on the lower side of the front end face of the connecting plate 1. The lower end of the filling part 3 is provided with a lower convex plate for setting the rivet hole 2.
[0029] Specifically, such as Figure 1 As shown, the lower convex plate includes a primary lower convex plate 6 and a secondary lower convex plate 7. The distance between the secondary lower convex plate 7 and the upper end of the connecting plate 1 is greater than the distance between the primary lower convex plate 6 and the upper end of the connecting plate 1. By setting the left convex plate 5, the primary lower convex plate 6, and the secondary lower convex plate 7, rivets can be placed at the edge of the connecting plate 1, increasing the rivet placement range and enhancing the connection strength between the connecting plate 1 and the partition frame.
[0030] Specifically, such as Figure 1 As shown, the upper left end of the connecting plate 1 is provided with an upper protrusion plate 8.
[0031] Specifically, such as Figure 1 As shown, the connecting plate 1 has reinforcing ribs on its rear end face. The purpose of these ribs is to enhance the overall structural strength of the connecting plate 1 and prevent it from bending.
[0032] Specifically, such as Figure 1 As shown, the reinforcing rib includes a main body located at the upper end of the rear end face of the connecting plate 1, and the main body extends from the left end to the right end of the rear end face of the connecting plate 1.
[0033] Specifically, such as Figure 2 As shown, the reinforcing ribs include an oblique reinforcing rib 10 disposed on the rear end face of the inclined plate 4 and a vertical reinforcing rib 11 disposed on the rear end of the upper convex plate 8. The oblique reinforcing rib 10 is inclined to the main reinforcing rib 9, and the vertical reinforcing rib 11 is perpendicular to the main reinforcing rib 9.
[0034] Specifically, such as Figure 1 As shown, the rivet hole 2 is separated from the reinforcing rib.
[0035] The working principle of this embodiment is explained as follows: First, the front end of the connecting plate 1 faces the back of the partition frame, and the filling part 3 is embedded into the stepped recess on the back of the partition frame. Then, the liner is positioned on the front of the partition frame, and rivets are passed through the rivet holes 2 on the connecting plate 1, the partition frame, and the liner in sequence. After the riveting operation is completed, the installation of the liner on the partition frame is completed.
[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.
Claims
1. A liner fixing bracket for mounting on a fuselage frame, comprising a connecting plate (1) for connecting to the frame and the liner respectively, wherein the connecting plate (1) has rivet holes (2) extending through it, characterized in that: The front end face of the connecting plate (1) is provided with a filling part (3) for filling the step depression on the partition frame. The shape and thickness of the filling part (3) are the same as the shape and depth of the step depression.
2. A liner fixing bracket for mounting on a fuselage frame according to claim 1, characterized in that: The connecting plate (1) is in the shape of a long straight plate, and an inclined plate (4) is provided on the connecting plate (1) at an angle to the connecting plate (1). The inclined plate (4) and the connecting plate (1) are located in the same plane.
3. A liner fixing bracket for mounting on a fuselage frame according to claim 2, characterized in that: The inclined plate (4) is located on the right side of the front end face of the connecting plate (1), and the left end of the front end face of the connecting plate (1) is provided with a left convex plate (5) for setting rivet holes (2).
4. A liner fixing bracket for mounting on a fuselage frame according to claim 3, characterized in that: The inclined plate (4) is located on the upper side of the front end face of the connecting plate (1), and the filling part (3) is located on the lower side of the front end face of the connecting plate (1). The lower end of the filling part (3) is provided with a lower convex plate for setting rivet holes (2).
5. A liner fixing bracket for mounting on a fuselage frame according to claim 4, characterized in that: The lower convex plate includes a primary lower convex plate (6) and a secondary lower convex plate (7). The distance between the secondary lower convex plate (7) and the upper end of the connecting plate (1) is greater than the distance between the primary lower convex plate (6) and the upper end of the connecting plate (1).
6. A liner fixing bracket for mounting on a fuselage frame according to claim 5, characterized in that: The upper left end of the connecting plate (1) is provided with an upper protrusion plate (8).
7. A liner fixing bracket for mounting on a fuselage frame according to claim 6, characterized in that: The connecting plate (1) has reinforcing ribs on its rear end face.
8. A liner fixing bracket for mounting on a fuselage frame according to claim 7, characterized in that: The reinforcing rib includes a main body located at the upper end of the rear end face of the connecting plate (1), which extends from the left end to the right end of the rear end face of the connecting plate (1).
9. A liner fixing bracket for mounting on a fuselage frame according to claim 8, characterized in that: The reinforcing ribs include an oblique reinforcing rib (10) disposed on the rear end face of the inclined plate (4) and a vertical reinforcing rib (11) disposed on the rear end of the upper convex plate (8). The oblique reinforcing rib (10) is inclined to the main reinforcing rib (9), and the vertical reinforcing rib (11) is perpendicular to the main reinforcing rib (9).
10. A liner fixing bracket for mounting on a fuselage frame according to claim 9, characterized in that: The rivet hole (2) is set separately from the reinforcing rib.