A high-reliability anti-loosening bolt connector for aircraft engines

Abstract

This utility model discloses a high-reliability anti-loosening fastening bolt connector for aero-engines, including a bolt head. The bolt head, the outer wall of the nut, and the inner wall of the hexagonal recess are all welded and fixedly connected with anti-slip textures. An installation slot is provided on the engine component, and the bolt shank is inserted into the installation slot. This high-reliability anti-loosening fastening bolt connector for aero-engines reduces thread wear by using the 60° triangular structure of the polytetrafluoroethylene (PTFE) coated thread on the bolt shank to connect it to the nut. Simultaneously, its elastic deformation fills the thread gap, enhancing the anti-loosening effect. Furthermore, auxiliary bolts and threaded mounting grooves can be used to further fix the bolt head and nut, restricting circumferential rotation of the nut. Anti-loosening washers provide support for relaxation, and the anti-slip textures prevent wrench slippage. The anti-loosening washers can be stably installed and removed using threaded mounting rings and auxiliary threaded mounting grooves, resulting in more stable installation.

Description

Technical Field

[0001] This utility model relates to the field of bolt connector technology, specifically a high-reliability anti-loosening fastening bolt connector for aero-engines. Background Technology

[0002] Aero engines operate in extremely harsh environments, enduring multiple loads including high-frequency vibration, high temperatures (up to 300-800℃), high pressure, and airflow impact. The reliability of the connections of their internal components directly affects the engine's operational safety. As a core fastening component, the bolt connector, if it loosens during operation, may lead to component displacement, friction, or even breakage, causing serious safety accidents.

[0003] The existing bolt connector structure CN201180049336.1 is made of a material with a lower elastic modulus as the bolts are positioned closer to the ends, in order to even out the load distributed on each bolt. Therefore, this load-sharing of the bolts can be averaged regardless of the shape of the joint between the joined parts. Thus, since no special processing is required for the joint, a bolt connector structure that does not conflict with design specifications can be achieved. However, it has shortcomings: the existing equipment has poor stability during tightening, poor anti-loosening and tightening effects, and poor gasket installation stability, which may cause loosening. Therefore, a highly reliable anti-loosening tightening bolt connector for aero-engines is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a highly reliable anti-loosening fastening bolt connector for aero-engines, in order to solve the problems mentioned in the background art, such as poor stability of bolt connector structure during fastening operation, poor anti-loosening and fastening effects, and poor gasket installation stability, which may cause loosening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-reliability anti-loosening fastening bolt connector for aero-engines, comprising a bolt head, a bolt shank vertically fixedly connected to the lower center of the bolt head, and an engine component fitted onto the outer wall of the bolt shank; an internal hexagonal groove is formed on the upper end of the inner wall of the bolt head; a nut is fitted onto the lower end of the outer wall of the bolt shank; a flange is fixedly connected to the nut and one edge of the bolt head; an auxiliary threaded mounting groove is formed on the inner side of one end of the flange; a threaded mounting ring is inserted into the inner wall of the auxiliary threaded mounting groove; an anti-loosening washer is fixedly connected to one end of the threaded mounting ring; an auxiliary bolt is inserted into the inner wall of the flange; anti-slip textures are welded and fixedly connected to the outer wall of the bolt head, the nut, and the internal hexagonal groove; an mounting slot is formed on the engine component; and the bolt shank is inserted into the mounting slot.

[0006] Preferably, the outer wall of the bolt shank has a 60° triangular thread with a polytetrafluoroethylene coating, and the nut is screwed into the bolt shank.

[0007] Preferably, the heads of the nuts and bolts are fitted and supported to the engine components by means of anti-loosening washers.

[0008] Preferably, the flange is connected to the engine component by auxiliary bolts and threaded mounting grooves in a locking and pressing manner.

[0009] Preferably, the anti-slip texture is distributed in a covering position on the bolt head, nut, and inner and outer walls of the hexagonal groove, and the anti-slip texture is a raised mesh structure.

[0010] Preferably, the anti-loosening gasket is screwed into the flange via a threaded mounting ring and an auxiliary threaded mounting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-reliability anti-loosening fastening bolt connector for aero-engines can reduce thread wear by using the 60° triangular structure of the polytetrafluoroethylene coating on the bolt shank to connect it to the nut. At the same time, its elastic deformation fills the thread gap, enhancing the anti-loosening effect. Furthermore, the bolt head and nut can be further fixed by auxiliary bolts and threaded mounting grooves, restricting the circumferential rotation of the nut. The anti-loosening washer can provide support for relaxation, and the anti-slip texture can prevent the wrench from slipping. Moreover, the anti-loosening washer can be stably installed and removed by threaded mounting rings and auxiliary threaded mounting grooves, making the installation more stable. Attached Figure Description

[0012] Figure 1 This is a front view of a high-reliability anti-loosening fastening bolt connector for aero engines according to this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of a high-reliability anti-loosening fastening bolt connector for aero engines according to this utility model;

[0014] Figure 3 This utility model relates to a highly reliable anti-loosening fastening bolt connector for aero engines. Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This utility model relates to a highly reliable anti-loosening fastening bolt connector for aero engines. Figure 2 Enlarged view at point B in the middle;

[0016] Figure 5 This utility model relates to a highly reliable anti-loosening fastening bolt connector for aero engines. Figure 2 Enlarged view of point C.

[0017] In the diagram: 1. Bolt head, 2. Bolt shank, 3. Nut, 4. Engine component, 5. Socket hexagon, 6. Flange, 7. Mounting slot, 8. Anti-slip texture, 9. Threaded mounting ring, 10. Auxiliary threaded mounting groove, 11. Anti-loosening washer, 12. Auxiliary bolt, 13. Threaded mounting groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5This utility model provides a technical solution: a high-reliability anti-loosening fastening bolt connector for aero-engines, comprising a bolt head 1, a bolt shank 2, a nut 3, an engine component 4, an internal hexagonal recess 5, a flange 6, a mounting slot 7, anti-slip texture 8, a threaded mounting ring 9, an auxiliary threaded mounting groove 10, an anti-loosening washer 11, an auxiliary bolt 12, and a threaded mounting groove 13. The bolt shank 2 is vertically fixed to the center of the lower end of the bolt head 1, and the engine component 4 is fitted onto the outer wall of the bolt shank 2. The outer wall of the bolt shank 2 is coated with 60° polytetrafluoroethylene. The threaded section has a triangular structure. The nut 3 is screwed onto the bolt shank 2, effectively preventing loosening. The upper inner wall of the bolt head 1 has an internal hexagonal groove 5. The lower outer wall of the bolt shank 2 is fitted with the nut 3. A flange 6 is fixedly connected to one edge of the nut 3 and the bolt head 1. The nut 3 and bolt head 1 are fitted and supported to the engine component 4 by an anti-loosening washer 11, effectively preventing loosening. The flange 6 is secured by auxiliary bolts 12. The threaded mounting groove 13 is locked and pressed into the engine component 4, allowing the flange 6 to be locked and supported by the auxiliary bolts 12, ensuring stable installation. An auxiliary threaded mounting groove 10 is provided on the inner side of one end of the flange 6, and a threaded mounting ring 9 is inserted into the inner wall of the auxiliary threaded mounting groove 10. An anti-loosening gasket 11 is fixedly connected to one end of the threaded mounting ring 9. The anti-loosening gasket 11 is screwed into the flange 6 via the threaded mounting ring 9 and the auxiliary threaded mounting groove 10, allowing for stable screwing and disassembly of the anti-loosening gasket 11 for easy replacement. The inner wall of the flange 6... The outer side is provided with a threaded mounting groove 13, and the inner wall of the threaded mounting groove 13 is connected to an auxiliary bolt 12. The outer wall of the bolt head 1, the nut 3 and the inner wall of the hexagonal groove 5 are all welded and fixed with anti-slip patterns 8. The anti-slip patterns 8 are distributed in a covering position on the inner and outer walls of the bolt head 1, the nut 3 and the hexagonal groove 5, and the anti-slip patterns 8 are a raised mesh structure. This allows the bolt head 1, the nut 3 and the hexagonal groove 5 to be stably tightened through the anti-slip patterns 8, which ensures stable use. The engine component 4 is provided with a mounting slot 7, and the bolt shank 2 is connected to the mounting slot 7.

[0020] Working principle: When using this type of high-reliability anti-loosening fastening bolt connector for aero-engines, firstly, the bolt shank 2 of the device is inserted into the mounting slot 7 inside the engine component 4. Then, the nut 3 is put onto the bolt shank 2 and screwed in. Then, it is supported and tightened by the 60° triangular thread structure of the polytetrafluoroethylene coating. During tightening, the anti-slip texture 8 can be used for anti-slip treatment. After locking, it can be supported and fixed by the anti-loosening washer 11. Then, the auxiliary bolt 12 and the threaded mounting groove 13 are locked and installed. When the anti-loosening washer 11 needs to be replaced, it can be disassembled and replaced by screwing in the threaded mounting ring 9 and the auxiliary threaded mounting groove 10. This is the usage process of this type of high-reliability anti-loosening fastening bolt connector for aero-engines.

[0021] It should be noted that this utility model is a high-reliability anti-loosening fastening bolt connector for aero-engines. All components are standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Furthermore, all electrical components mentioned above refer to power components, electrical components, and the matching monitoring computer and power supply connected by wires. The specific connection method should refer to the working principle described above, where the electrical connection between each electrical component is completed in sequence. The detailed connection method is a well-known technology in the field.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-reliability anti-loosening fastening bolt connector for aircraft engines, comprising a bolt head (1), wherein a bolt shank (2) is vertically fixedly connected to the lower center of the bolt head (1), and engine components (4) are sleeved on the outer wall of the bolt shank (2), characterized in that: The upper end of the inner wall of the bolt head (1) is provided with an internal hexagonal groove (5), the lower end of the outer wall of the bolt shank (2) is fitted with a nut (3), and a flange (6) is fixedly connected to one edge of the nut (3) and the bolt head (1). An auxiliary threaded mounting groove (10) is provided on the inner side of one end of the flange (6), and a threaded mounting ring (9) is inserted into the inner wall of the auxiliary threaded mounting groove (10). An anti-loosening washer (11) is fixedly connected to one end of the threaded mounting ring (9). A threaded mounting groove (13) is provided on the outer side of the inner wall of the flange (6), and an auxiliary bolt (12) is inserted into the inner wall of the threaded mounting groove (13). Anti-slip patterns (8) are welded and fixedly connected to the outer walls of the bolt head (1), the nut (3), and the inner wall of the internal hexagonal groove (5). An mounting slot (7) is provided on the engine component (4), and the bolt shank (2) is inserted into the mounting slot (7).

2. A high-reliability anti-loose fastening type bolt connector for an aero-engine according to claim 1, characterized in that: The outer wall of the bolt shank (2) is a 60° triangular thread with a polytetrafluoroethylene coating, and the nut (3) is screwed into the bolt shank (2).

3. A high-reliability anti-loose fastening type bolt connector for an aero-engine according to claim 2, characterized in that: The nut (3) and bolt head (1) are connected to the engine component (4) in a close fit through the anti-loosening washer (11).

4. A high-reliability anti-loose fastening type bolt connector for an aero-engine according to claim 3, characterized in that: The flange (6) is connected to the engine component (4) by auxiliary bolts (12) and threaded mounting grooves (13) in a locking and pressing manner.

5. A high-reliability anti-loose fastening type bolt connector for an aero-engine according to claim 4, characterized in that: The anti-slip texture (8) is distributed in a covering position on the inner and outer walls of the bolt head (1), nut (3) and internal hexagonal groove (5), and the anti-slip texture (8) is a raised mesh structure.

6. A high-reliability anti-loosening bolt connector for aero-engines according to claim 5, characterized in that: The anti-loosening gasket (11) is connected to the flange (6) by a threaded mounting ring (9) and an auxiliary threaded mounting groove (10).

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