Connecting structure for limiting swing angle of knuckle bearing
By using the boss bushing in the connecting structure of the rotating part of the aircraft, the swing angle of the joint bearing is adjusted, and the problem of inadequate adjustment of the installation angle of the rotating part of the aircraft is solved, and flexible rotation and reliable load-bearing capacity are achieved.
Patent Information
- Application Number
- CN202420905334.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When installing bushings or joint bearings in the rotational part of the aircraft, there are problems such as inability to adjust the installation angle and structural instability, especially when large gaps are required, the structural instability caused by excessive swing angle of joint bearings.
A connecting structure including a rotating shaft, joint bearing, a first rotating base and a second rotating base are designed. By installing a boss bushing between the second rotating base, the boss bushing has a circumferentially distributed boss and a pre- With the gap, the thickness and angle can be adjusted to limit the swing angle of the joint bearing to avoid structural instability.
It realizes the flexible rotation and reliable load-bearing capacity of the structure, meeting the flexible rotation and stability requirements that cannot be achieved by ordinary bushings and joint bearings alone.
Smart Images
Figure CN222208623U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of aircraft structure design, and in particular relates to a connection structure for limiting the swing angle of a spherical bearing. Background Art
[0002] At present, rotating parts on aircraft are generally installed with bushings or spherical bearings. Installing bushings can generally protect the base from frequent rotation and severe wear. Installing spherical bearings can protect the base, and the swing angle of the bearing itself can make the installation angle adjustable. However, if only bushings are installed, the installation angle cannot be adjusted; if only spherical bearings are installed, if a large gap is required between the two bases of the rotating part, the swing angle of the spherical bearing will be too large, which may cause structural instability. Utility Model Content
[0003] In order to solve the above problems, the present application provides a connection structure for limiting the swing angle of a spherical bearing, comprising:
[0004] A rotating shaft, a spherical bearing sleeved on the rotating shaft, a first rotating base sleeved on the spherical bearing, a second rotating base sleeved on both sides of the first rotating base, a boss bushing between the second rotating base and the first rotating base, the boss bushing has circumferentially distributed bosses on the end surface close to the spherical bearing, and a preset gap is provided between the boss and the rotating base.
[0005] Preferably, the second rotating base is sleeved on the rotating shaft through two common bushings, one end of the common bushing has a shoulder, and the shoulders of the two common bushings are respectively placed at two ends of the second rotating base.
[0006] Preferably, one end surface of the boss bushing close to the common bushing has a groove for accommodating the shoulder.
[0007] Preferably, the boss surface is a cylinder, and its axis points to the center of the boss bushing.
[0008] Preferably, the boss bushing includes a plurality of models with different boss heights.
[0009] Preferably, the contour line of the boss includes a cosine function shape.
[0010] Preferably, both end surfaces of the center hole of the boss bushing have chamfers.
[0011] Preferably, there is a reserved gap between the common bushings on both sides of the second rotating base.
[0012] In summary, the connection structure of limiting the swing angle of the spherical bearing in this design can solve three problems through a set of boss bushings: first, it can make the two bases that need to rotate rotate flexibly; second, the thickness of the boss bushing can be adjusted according to the required gap size between the bases; finally, the boss of the boss bushing can prevent the structural instability caused by the large swing angle of the spherical bearing. This design achieves requirements that cannot be achieved by ordinary bushings and spherical bearings alone, and meets the requirements of flexible rotation of the structure and reliable load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of a boss bushing in a preferred embodiment of the present application;
[0014] Figure 2 It is a stereoscopic diagram of a boss bushing in a preferred embodiment of the present application;
[0015] Figure 3 is a cross-sectional view of a boss bushing in a preferred embodiment of the present application;
[0016] Figure 4 It is a schematic diagram of the swing connection structure of a spherical bearing in a preferred embodiment of the present application. DETAILED DESCRIPTION
[0017] 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.
[0018] The present application provides a connection structure for limiting the swing angle of a spherical bearing, comprising:
[0019] A rotating shaft, a spherical bearing 4 sleeved on the rotating shaft, a first rotating base 2 sleeved on the spherical bearing 4, a second rotating base 3 sleeved on both sides of the first rotating base 2, a boss bushing 1 between the second rotating base 3 and the first rotating base 2, the boss bushing 1 has circumferentially distributed bosses on the end face close to the spherical bearing 4, a preset gap is provided between the boss and the rotating base 2, and the two ends of the rotating shaft can be limited by nuts.
[0020] Preferably, the second rotating base 3 is sleeved on the rotating shaft through two common bushings 5 , one end of the common bushing 5 has a shoulder, and the shoulders of the two common bushings 5 are respectively placed at two ends of the second rotating base 3 .
[0021] Preferably, one end surface of the boss bushing 1 close to the common bushing 5 has a groove for accommodating the shoulder.
[0022] Preferably, the boss surface is a cylinder, and its axis points to the center of the boss bushing 1.
[0023] Preferably, the boss bushing 1 includes a plurality of models with different boss heights, and the thickness of the boss bushing 1 varies according to the size of the gap required between the first rotating base 2 and the second rotating base 3 .
[0024] The height of the boss of the boss bushing 1 is determined according to the required angle between the first rotating base 2 and the second rotating base 3 .
[0025] Preferably, the contour line of the boss includes a cosine function shape, and the arc surface avoids scratching the surface of the second rotating base 3. The cosine function-shaped contour line can resist the tangential force when contacting the second rotating base 3.
[0026] Preferably, both end surfaces of the center hole of the boss bushing 1 have chamfers.
[0027] Preferably, there is a reserved gap between the common bushings 5 on both sides of the second rotating base 3 .
[0028] In summary, the connection structure of limiting the swing angle of the spherical bearing in this design can solve three problems through a set of boss bushings: first, it can make the two bases that need to rotate rotate flexibly; second, the thickness of the boss bushing can be adjusted according to the required gap size between the bases; finally, the boss of the boss bushing can prevent the structural instability caused by the large swing angle of the spherical bearing. This design achieves requirements that cannot be achieved by ordinary bushings and spherical bearings alone, and meets the requirements of flexible rotation of the structure and reliable load-bearing capacity.
[0029] 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 connection structure for limiting the swing angle of a spherical bearing, characterized in that: include: A rotating shaft, a spherical bearing (4) sleeved on the rotating shaft, a first rotating base (2) sleeved on the spherical bearing (4), a second rotating base (3) sleeved on both sides of the first rotating base (2), a boss bushing (1) between the second rotating base (3) and the first rotating base (2), the boss bushing (1) having circumferentially distributed bosses on the end surface close to the spherical bearing (4), and a preset gap between the boss and the rotating base (2).
2. The connection structure for limiting the swing angle of a spherical bearing according to claim 1, characterized in that: The second rotating base (3) is sleeved on the rotating shaft through two common bushings (5), one end of the common bushing (5) has a convex shoulder, and the convex shoulders of the two common bushings (5) are respectively placed at the two ends of the second rotating base (3).
3. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: One end surface of the boss bushing (1) close to the common bushing (5) has a groove for accommodating the boss.
4. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: The surface of the boss is a cylinder, and its axis points to the center of the boss bushing (1).
5. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: The boss bushing (1) includes a plurality of models with different boss heights.
6. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: The contour line of the boss includes a cosine function shape.
7. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: Both end surfaces of the center hole of the boss bushing (1) are chamfered.
8. The connection structure for limiting the swing angle of a spherical bearing according to claim 2, characterized in that: There is a reserved gap between the common bushings (5) on both sides of the second rotating base (3).