Standby adjusting sheet connecting structure
By using a shaft-type nut and a specially designed bolt connection structure, the problem of insufficient surface quality and ease of disassembly/reassembly of the spare adjustment plate connection structure is solved, achieving an efficient and reliable connection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-04-07
AI Technical Summary
In the existing technology, the connection structure of the spare adjustment piece cannot meet the surface quality requirements of the bolt connection, and it is inconvenient to disassemble and assemble, thus failing to meet the need for quick disassembly and assembly.
It adopts a shaft-type nut and special bolt connection structure, and the deflection of the spare adjustment plate is achieved by the rotation of the bearing. Combined with the adjustment of verticality and coaxiality by the inclined washer, it ensures the reliability and convenience of the connection.
It meets the surface quality requirements of bolted connections, is easy to assemble and disassemble, and improves the interchangeability of spare adjustment pieces and the reliability of connections.
Smart Images
Figure CN224090417U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aerospace structural design technology, and relates to a spare adjustment tab connection structure. Background Technology
[0002] Hinged connections are a common form of connection for moving parts in aircraft. A spare trim tab is a secondary control surface. In the event of a trim tab failure, the spare trim tab can be operated to reduce or eliminate the pilot's control force on the control surfaces, thereby maintaining the aircraft's level and straight-line flight. The spare trim tab is located at the trailing edge of the control surface and is connected to the trailing edge beam via a hinged joint. During assembly, the aerodynamic shape of the trailing edge of the control surface must be maintained, and the need for quick assembly and disassembly of the spare trim tab must be met. Due to the small web height of the beam in the trailing edge connection area and the limited connection space, double-sided bolt and nut connections cannot be used. Conventional through-bolt and nut connections are used, but the nuts protrude outwards, failing to meet overall surface quality requirements. Utility Model Content
[0003] Purpose of the utility model: This utility model overcomes the shortcomings of the prior art and provides a spare adjustment plate connection structure that meets the surface quality requirements of bolted connections, is easy to assemble and disassemble, and has good processability and interchangeability.
[0004] Technical solution: A spare trim piece connection structure, including a rudder surface trailing edge beam, a shim, a spare trim piece suspension joint, a spare trim piece beam, a spare trim piece mating joint, and a bearing;
[0005] The web surface of the trailing edge beam of the rudder surface is fitted to the trailing edge beam surface of the rudder surface, and the flange surface is connected to the elevator wall panel skin; the liner is fitted to the trailing edge beam of the rudder surface; the spare trim piece suspension joint is inserted into the liner groove at the front end along the heading and connected by a shaft nut, and a bearing is pressed into the rear lug at the heading end, and the rotation of the bearing realizes the deflection of the spare trim piece; the web surface of the spare trim piece beam is fitted to the plane of the spare trim piece beam, and the flange surface is connected to the spare trim piece wall panel skin; the front end of the spare trim piece butt joint is recessed and connected to the flange surface of the spare trim piece beam, and bushings are pressed into both sides of the notch in the middle of the joint, and connected to the lug bearing of the spare trim piece suspension joint by bolts; the shaft nut and bolts are tightened to realize the connection between the spare trim piece and the rudder surface.
[0006] Furthermore, the shaft-type nut is also matched with a bevel washer. By adjusting the bevel washer, the perpendicularity and coaxiality of the shaft-type nut and the bolt are ensured, which facilitates assembly.
[0007] Furthermore, the shaft nut is a tubular steel component with a cross-shaped flat round head bolt head at the end to meet the overall surface quality requirements. The outer diameter of the shaft nut's smooth rod fits snugly against the wall of the connecting hole, using a small clearance fit to improve shear capacity. The inner diameter is threaded internally.
[0008] Furthermore, the bolts are specially made non-standard bolts, except for the specially made shank length and thread length, the rest are the same as standard bolts.
[0009] Furthermore, the gasket is a machined aluminum alloy part with a closed outer shape and a flat inner shape, which facilitates the assembly of the rudder surface suspension joint.
[0010] Furthermore, the trailing edge beam of the rudder and the spare adjustment beam are both aluminum alloy sheet metal parts.
[0011] Furthermore, the spare adjustment plate suspension joint is made of aluminum alloy forging.
[0012] Technical effects: The spare adjustment plate connection structure proposed in this utility model connects the rudder surface and the spare adjustment plate through the spare adjustment plate suspension joint via a shaft-type nut, which solves the problem that conventional bolt and nut connection methods cannot guarantee the overall surface quality requirements, and makes the spare adjustment plate easy to disassemble; the spare adjustment plate has good interchangeability, the bearing on the adjustment plate rotates, and the front end joint is an integral structure that can be inserted into the spare adjustment plate beam 4, and the insertion structure facilitates replacement. Attached Figure Description
[0013] This utility model includes 6 accompanying drawings, and the drawings and their descriptions are as follows:
[0014] Figure 1 Schematic diagram of the connection structure for the spare adjustment piece of the rudder surface;
[0015] Figure 2 This is a schematic diagram of the structural assembly of this utility model;
[0016] Figure 3 Schematic diagram of the spare adjustment plate suspension joint;
[0017] Figure 4 Schematic diagram of the spare adjustment piece docking joint;
[0018] Figure 5 This is a schematic diagram of a shaft-type nut;
[0019] Figure 6 This is a schematic diagram of a bolt, beveled washer, and shaft nut connection.
[0020] The components are: 1. Rudder aft edge beam, 2. Shim, 3. Spare trimmer suspension joint, 4. Spare trimmer beam, 5. Spare trimmer butt joint, 6. Bearing, 7. Bolt, 8. Angled washer, 9. Angled washer, 10. Shaft nut. Detailed Implementation
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings or specific implementation examples. It should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described, and these examples should not be construed as limited to the examples set forth herein. Rather, these examples are described to better demonstrate the positive effects of this utility model, and all aspects not detailed herein are considered to be well-known or conventional techniques in the art.
[0022] See appendix Figures 1-6 A connecting structure includes a rudder rear edge beam 1, a gasket 2, a spare adjustment plate suspension joint 3, a spare adjustment plate beam 4, a spare adjustment plate butt joint 5, a bearing 6, a bolt 7, a bevel washer 8, a bevel washer 9, and a shaft nut 10.
[0023] The spare adjusting plate is connected to the control surface via the spare adjusting plate suspension joint 3. The trailing edge beam 1 and the gasket 2 of the control surface are assembled as a whole with the elevator assembly. The spare adjusting suspension joint 3, the spare adjusting plate beam, and the spare adjusting plate mating joint 5 are assembled as a whole with the spare adjusting plate assembly. The spare adjusting suspension joint 3 and the spare adjusting plate mating joint 5 are rotated by the rotation of the bearing. When connecting the spare adjusting plate to the control surface, the spare adjusting plate suspension joint 3 is pushed into the groove of the gasket 2 assembled on the trailing edge beam 1 of the control surface. After assembly, a hole is drilled, and the hole is reamed to match the outer diameter of the shaft nut 10. After drilling, the shaft nut 10 is installed. The perpendicularity of the shaft nut 10 is ensured by adjusting the inclined washer 9. After the shaft nut 10 is assembled, the bolt 7 is inserted, and the thread of the bolt 7 is tightened to the internal thread of the shaft nut 10. The coaxiality of the bolt 7 and the shaft nut 10 is ensured by adjusting the inclined washer 8. After tightening, a punch is made at the end of the bolt 7 that protrudes from the shaft nut 10 to prevent loosening.
[0024] To remove the spare adjusting piece, simply unscrew bolt 7 and remove shaft nut 10. For reassembly, follow the assembly steps; re-reaming of shaft nut 10 is not required.
[0025] The above specific embodiments or examples are only used to explain the technical solutions of this utility model and are not intended to limit this application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. It can be understood by those skilled in the art that, based on the design concept of this application, adaptive modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications, equivalent substitutions, and adaptive improvements do not depart from the technical essence of this utility model and should all be covered within the protection scope of this application.
Claims
1. A spare adjustment piece connection structure, characterized in that, This includes the trailing edge beam of the rudder surface, the liner, the spare trimmer suspension joint, the spare trimmer beam, the spare trimmer mating joint, and the bearing; The web surface of the trailing edge beam of the rudder surface is fitted to the trailing edge beam surface of the rudder surface, and the flange surface is connected to the elevator wall panel skin; the liner is fitted to the trailing edge beam of the rudder surface; the spare trim piece suspension joint is inserted into the liner groove at the front end along the heading and connected by a shaft nut, and a bearing is pressed into the rear lug at the heading end, and the rotation of the bearing realizes the deflection of the spare trim piece; the web surface of the spare trim piece beam is fitted to the plane of the spare trim piece beam, and the flange surface is connected to the spare trim piece wall panel skin; the front end of the spare trim piece butt joint is recessed and connected to the flange surface of the spare trim piece beam, and bushings are pressed into both sides of the notch in the middle of the joint, and connected to the lug bearing of the spare trim piece suspension joint by bolts; the shaft nut and bolts are tightened to realize the connection between the spare trim piece and the rudder surface.
2. The spare adjustment piece connection structure as described in claim 1, characterized in that, The shaft-type nut is also matched with a bevel washer. By adjusting the bevel washer, the perpendicularity and coaxiality of the shaft-type nut and the bolt are ensured.
3. The spare adjustment piece connection structure as described in claim 2, characterized in that, The shaft nut is a tubular steel component with a cross-shaped flat round head bolt head at the end. The outer diameter of the shaft nut's smooth rod fits snugly against the wall of the connecting hole, using a small clearance fit. The inner diameter of the shaft nut is threaded internally.
4. The spare adjustment piece connection structure as described in claim 2, characterized in that, The bolts are specially made non-standard bolts. Except for the specially made shank length and thread length, they are the same as standard bolts.
5. The spare adjustment piece connection structure as described in claim 1, characterized in that, The gasket is a machined aluminum alloy part with a closed outer shape and a flat inner shape, which facilitates the assembly of the rudder surface suspension joint.
6. The spare adjustment piece connection structure as described in claim 1, characterized in that, The trailing edge beam of the rudder and the spare adjustment beam are both aluminum alloy sheet metal parts.
7. The spare adjustment piece connection structure as described in claim 1, characterized in that, The spare adjustment plate suspension joint is made of aluminum alloy forging.