An external rotation-stopping structure of a ball bearing ear structure

Abstract

The utility model belongs to the technical field of aircraft structure design, concretely relates to a kind of external rotation-stopping structure of ball bearing lug structure, including single lug joint and double lug connecting rod connected by bearing, the lug joint side is provided with lug outer side boss, rotation-stopping member is fixed on the boss.The utility model solves the problem that the connecting rod of ball bearing installed at both ends is prone to rotation, and also has the advantages of simple structure, easy installation, light weight and the like.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft structural design technology, specifically relating to an external anti-rotation structure for a ball bearing lug structure. Background Technology

[0002] Ball bearings are widely used in single and double lug connection technology in aircraft structural design. Lug joints, through the cooperation of ball bearings and bolts, can transmit high concentrated loads. When designing the connecting bracket for a certain type of aircraft, it is necessary to design both ends of the connecting rod as single and double lug connections. Ball bearings are installed in the single lug joints to solve the problem of multi-link installation and coordination. At the same time, the bracket structure must be lightweight and easy to install. However, the multidirectional nature of ball bearings causes the connecting rod to rotate with the lugs, which brings many challenges to the stability design of the aircraft structure. Utility Model Content

[0003] The purpose of this invention is to provide an external anti-rotation structure for a single-ear structure with ball bearings installed. This invention solves the problem of easy rotation of connecting rods with ball bearings installed at both ends, and also has the advantages of simple structure, easy installation, and light weight.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an external anti-rotation structure for a ball bearing lug structure, comprising a single-ear connector and a double-ear connecting rod connected by a bearing, wherein the single-ear connector has an outer boss on the side of the lug, and an anti-rotation component is fixed on the boss.

[0005] Furthermore, in the aforementioned anti-rotation structure, the anti-rotation component consists of a connecting base and a pointer cantilever structure.

[0006] Furthermore, in the aforementioned anti-rotation structure, the cross-section of the pointer cantilever of the anti-rotation component is a semi-circle, and the diameter of the semi-circle is equal to the gap between the single ear and the double ear.

[0007] Furthermore, in the aforementioned anti-rotation structure, the cantilever axis is perpendicular to the length direction of the connecting base and perpendicular to the axis of the connecting rod.

[0008] Furthermore, in the aforementioned anti-rotation structure, the thickness of the base is 1 / 4 of the thickness of a single ear piece.

[0009] Furthermore, in the aforementioned anti-rotation structure, the connecting base of the anti-rotation component is a plane, and after the two anti-rotation components are connected to the boss of the single ear, the total thickness is equal to the thickness of the single ear connector.

[0010] Furthermore, in the aforementioned anti-rotation structure, the outer boss of the ear piece is a rectangular boss, and the outer boss of the ear piece is attached to the base of the anti-rotation component and secured by fixing bolts.

[0011] In the aforementioned anti-rotation structure, both the anti-rotation base and the single-ear protrusion are provided with two mounting guide holes, the diameter of which is 2~4mm.

[0012] Technical benefits: The external anti-rotation structure of the ball bearing lug structure designed in this utility model solves the problem of easy rotation of the connecting rod with ball bearings installed at both ends. It also has the advantages of simple structure, easy installation, and light weight. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the anti-rotation structure and single-ear connector after installation; Figure 2 This is a schematic diagram showing the angle between the connecting structures of two ears and one ear; Figure 3 This is an exploded view of the boss and anti-rotation component of a single-ear connector; Figure 4 This is a schematic diagram showing the width of the boss and the single-ear connector; Figure 5 This is a schematic diagram of the anti-rotation component; Figure 6 This is a schematic diagram illustrating a specific application of this utility model; Among them, 1 is a single-ear connector, 2 is a boss, 3 is an anti-rotation component, 4 is a base, 5 is a pointer cantilever, 6 is a double-ear connecting rod, 7 is a bearing, 1 is a single-ear connector with thickness T, 2 is a boss with thickness t, 3 is an anti-rotation component with thickness t2, and 4 is a pointer cantilever with height t3. Detailed Implementation

[0014] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. Numerous specific design details are set forth in the following detailed description to provide a more complete understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific setup and method set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and device without departing from the spirit of this utility model. In the drawings and the following description, any parts not exhaustively described are considered to be common knowledge or conventional practices in the art.

[0015] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Combination Figure 1 , 6In the specific implementation of this utility model, an external anti-rotation structure for a ball bearing lug structure is designed, including a single lug connector 1, a boss 2, an anti-rotation component 3, a base 4, a pointer cantilever 5, a double lug connecting rod 6, and a bearing 7; the single lug connector 1 and the double lug connecting rod 6 are connected by the bearing 7, and the side of the single lug connector 1 is provided with an outer boss 2, and the anti-rotation component 3 is fixed on the boss 2.

[0017] The anti-rotation component 3 consists of a connecting base 4 and a pointer cantilever 5; the single-ear connector anti-rotation structure is described in detail below. Figure 1 , 4 6. It includes a single-ear connector 1, a boss 2, and an anti-rotation component 3. The single-ear connector and the boss are integrally machined structures. The single-ear connector 1 has a semi-circular outline, with a boss 2 on the outer side and two anti-rotation components 3 arranged on both sides of the boss. The anti-rotation component 3 includes a base 4 and a pointer cantilever 5.

[0018] The angle α between the boss and the axis of the double-ear connector is 90°, the angle W of the fan-shaped range of the boss width is 45°, the chamfer R of the boss and the single-ear connector is set around the edges, and the thickness t of the boss is 1 / 2 of the thickness T of the single-ear connector.

[0019] There are two anti-rotation components. The thickness of the base of the anti-rotation component is t2=1 / 4T. When installing the anti-rotation component, the height t3 of the pointer cantilever is ground to make the cantilever contact the surface of the ear piece, thereby filling the gap between the ear pieces.

[0020] The cantilever direction is set at a 90° angle with the connecting rod so that the cantilever length L is less than or equal to the radius of the single-ear joint.

[0021] The anti-rotation component base is provided with two mounting guide holes A, the diameter of which is 2~4mm. When using mounting bolts D to connect and assemble with the boss, the boss is fitted with these holes.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. An external anti-rotation structure for a ball bearing lug structure, characterized in that, It includes a single-ear connector and a double-ear connecting rod connected by a bearing. The single-ear connector has an outer boss on the side of the ear piece, and an anti-rotation component is fixed on the boss.

2. The external anti-rotation structure of the ball bearing lug structure as described in claim 1, characterized in that, The anti-rotation component consists of a connecting base and a pointer cantilever structure.

3. The external anti-rotation structure of the ball bearing lug structure as described in claim 2, characterized in that, The cross-section of the pointer cantilever of the anti-rotation component is a semi-circle, and the diameter of the semi-circle is equal to the gap between the single ear and the double ear.

4. The external anti-rotation structure of the ball bearing lug structure as described in claim 3, characterized in that, The cantilever axis is perpendicular to the length direction of the connecting base and the axis of the connecting rod.

5. The external anti-rotation structure of the ball bearing lug structure as described in claim 4, characterized in that, The thickness of the base is 1 / 4 of the thickness of a single earpiece.

6. The external anti-rotation structure of the ball bearing lug structure as described in claim 1, characterized in that, The base of the anti-rotation component is flat. After the two anti-rotation components are connected to the boss of the single ear, the total thickness is equal to the thickness of the single ear connector.

7. The external anti-rotation structure of the ball bearing lug structure as described in claim 1, characterized in that, The outer protrusion of the ear piece is a rectangular protrusion, and the outer protrusion of the ear piece is attached to the base of the anti-rotation component and fixed by bolts.

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