An easy-to-install and maintain aircraft engine lubricating oil line connector

Abstract

This utility model relates to the field of connector technology and discloses an aero-engine lubricating oil pipeline connector that is easy to install and maintain. It includes a connector head with an external thread at its front end. A connector is threaded onto the outer wall of the external thread. Storage boxes are fixedly connected to the upper and lower parts of the rear end of the connector's outer wall. Storage grooves are formed on the outer wall of the opposite end of each storage box, and return springs are fixedly connected to the front end of the inner wall of each storage groove. In this utility model, the aero-engine lubricating oil pipeline connector is initially fixed by the threaded connection between the external thread and the connector. With the help of the wedge structure of the first and second abutments, the rotating rod is pushed to rotate under the action of the return spring. This causes the locking block to engage with the limiting hole, forming a double lock to prevent vibration from causing thread displacement. It also facilitates the installation and separation of the connector and the connector head, making it convenient for seal replacement and pipeline maintenance, significantly shortening maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to an aircraft engine lubricating oil pipeline connector that is easy to install and maintain. Background Technology

[0002] As is well known, the lubricating oil system of an aircraft engine is a core subsystem that ensures the operation of the engine. Its pipeline joints need to achieve reliable transmission of lubricating oil in environments with high temperature (-55℃~120℃), high pressure (usually 8~30MPa), and strong vibration (10~2000Hz). At the same time, it needs to meet the requirements of rapid installation and convenient maintenance in order to shorten the engine maintenance cycle. Most of the existing lubricating oil pipeline joints adopt a single set of seals. Replacing the seals or repairing the pipeline requires disassembling the entire joint, which is complicated and significantly increases maintenance time and downtime costs. Moreover, in a vibration environment, it is easy to loosen due to uneven pre-tightening force. Therefore, technical improvements are urgently needed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an easy-to-install and maintain aircraft engine lubricating oil pipeline connector. In use, the connector is initially fixed by connecting the external thread to the threaded joint. The wedge structure of the first and second abutments, under the action of a return spring, pushes the rotating rod to rotate, causing the locking block to engage with the limiting hole, forming a double lock to prevent vibration from causing thread displacement. This also facilitates the installation and separation of the connector and the connecting head, makes seal replacement and pipeline maintenance convenient, and significantly shortens maintenance time.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An easy-to-install and maintain aircraft engine lubricating oil pipeline connector includes a connector head. The front end of the connector head has an external thread, and a joint is threaded onto the outer wall of the external thread. A storage box is fixedly connected to the upper and lower parts of the rear end of the outer wall of the joint. A storage groove is formed on the outer wall of the opposite end of the storage box. A return spring is fixedly connected to the front end of the inner wall of the storage groove. A push block is fixedly connected to the rear end of the return spring. The rear end of the push block passes through the storage groove and the storage box and is fixedly connected to a stop block. A rotating rod is rotatably connected to the upper and lower parts of the outer wall of the connector near the rear end of the storage box. A stop block is fixedly connected to the front end of the lower surface of the rotating rod.

[0006] Compared with existing aircraft engine lubricating oil pipeline joints, the above technical solution achieves initial fixation through the external thread and the threaded connection of the joint. With the help of the wedge structure of the first and second abutments, the rotating rod is pushed to rotate under the action of the return spring. This causes the locking block to lock with the limiting hole, forming a double lock to prevent vibration from causing the thread to shift. It also facilitates the installation and separation of the joint and the connector, and makes it convenient for the replacement of seals and pipeline maintenance, greatly shortening maintenance time.

[0007] Furthermore, a connecting pipe is fixedly connected to the outer wall of the rear end of the connector;

[0008] The above technical solution facilitates reliable oil transfer via connecting pipes.

[0009] Furthermore, limit holes are provided at the upper and lower parts of the front end of the outer wall of the connector, and a snap-fit ​​block is fixedly connected to the rear end of the lower surface of the rotating rod.

[0010] The above technical solution facilitates the positioning of the snap-fit ​​block through the limiting hole.

[0011] Furthermore, each of the snap-fit ​​blocks engages with the limiting hole.

[0012] With the above technical solution, the snap-fit ​​blocks are engaged with the limiting holes respectively, which facilitates the secondary locking of the connector and the connecting head.

[0013] Furthermore, the outer walls of the push blocks are all provided with anti-slip textures and are all slidably connected to the inner walls of the storage slots.

[0014] The above technical solution increases the friction during operation by using the anti-slip texture on the outer wall of the push block, making it easier to apply force stably in greasy or confined spaces. The sliding connection of the push block in the storage slot ensures smooth movement driven by the reset spring, thus guaranteeing that the first and second blocks can be locked or unlocked.

[0015] Furthermore, both the first and second abutments are wedges, with an arc-shaped transition edge at the rear end of the first abutment and a rounded corner structure at the front end of the second abutment.

[0016] The above technical solution reduces stress concentration when the two come into contact by using an arc-shaped transition edge and a rounded corner structure, thus avoiding structural damage during long-term use.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model proposes an aircraft engine lubricating oil pipeline connector that is easy to install and maintain. Compared with existing aircraft engine lubricating oil pipeline connectors, this aircraft engine lubricating oil pipeline connector achieves initial fixation through the external thread and the threaded connection of the connector. With the help of the wedge block structure of the first and second abutment blocks, the rotating rod is pushed to rotate under the action of the return spring. This causes the locking block to lock with the limiting hole to form a double lock to prevent vibration from causing the thread to shift. It also facilitates the installation and separation of the connector and the connection head, facilitates the replacement of seals and pipeline maintenance, and greatly shortens the maintenance time. Attached Figure Description

[0019] Figure 1 This is an isometric view of an aircraft engine lubricating oil pipeline joint that is easy to install and maintain, as proposed in this utility model.

[0020] Figure 2 An exploded schematic diagram of the connector in an aero-engine lubricating oil pipeline connector that is easy to install and maintain, as proposed in this utility model.

[0021] Figure 3 Axonometric schematic diagram of the connector in an aero-engine lubricating oil pipeline connector that is easy to install and maintain, as proposed in this utility model.

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a side view of the connection of an aircraft engine lubricating oil pipeline joint that is easy to install and maintain, as proposed in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Connector; 11. Connecting pipe; 12. External thread; 13. Limiting hole; 2. Connector; 21. Storage box; 22. Storage slot; 23. Return spring; 24. Push block; 25. Abutment block one; 26. Rotating rod; 27. Abutment block two; 28. Snap-fit ​​block. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Reference Figure 1-5This utility model provides an embodiment of an aircraft engine lubricating oil pipeline connector that is easy to install and maintain. It includes a connector 1, with an external thread 12 at the front end of the connector 1. A connector 2 is threaded onto the outer wall of the external thread 12. Storage boxes 21 are fixedly connected to the upper and lower parts of the rear end of the outer wall of the connector 2. Storage grooves 22 are formed on the outer wall of the opposite end of each storage box 21. Return springs 23 are fixedly connected to the front end of the inner wall of each storage groove 22. Push blocks 24 are fixedly connected to the rear end of each return spring 23. The rear ends of push blocks 24 penetrate the storage grooves 22 and storage boxes 21 and are fixedly connected to a first abutment 25. Rotating rods 26 are rotatably connected to the upper and lower parts of the outer wall of the connector 2 near the rear end of the storage box 21. A second abutment 27 is fixedly connected to the front end of the lower surface of the rotating rod 26.

[0028] Compared with existing aircraft engine lubricating oil pipeline joints, this aircraft engine lubricating oil pipeline joint achieves initial fixation through the threaded connection between the external thread 12 and the joint 2. With the wedge structure of the first abutment 25 and the second abutment 27, the rotating rod 26 is pushed to rotate under the action of the return spring 23. This causes the locking block 28 to lock with the limiting hole 13, forming a double lock to prevent vibration from causing thread displacement. It also facilitates the installation and separation of the joint 2 and the connector 1, and makes it convenient for the replacement of seals and pipeline maintenance, greatly shortening maintenance time.

[0029] A connecting pipe 11 is fixedly connected to the outer wall of the rear end of connector 1;

[0030] The connecting pipe 11 facilitates reliable transmission of lubricating oil.

[0031] Limiting holes 13 are provided at the upper and lower parts of the front end of the outer wall of connector 1, and locking blocks 28 are fixedly connected to the rear end of the lower surface of rotating rod 26.

[0032] The limiting hole 13 facilitates the positioning of the snap-fit ​​block 28.

[0033] Each of the snap-fit ​​blocks 28 is engaged with the limiting hole 13;

[0034] Each of the snap-fit ​​blocks 28 engages with the limiting hole 13, facilitating a secondary locking of the connector 2 and the connector 1.

[0035] The outer walls of the push blocks 24 are all provided with anti-slip textures and are all slidably connected to the inner walls of the storage slots 22.

[0036] The anti-slip texture on the outer wall of the push block 24 increases the friction during operation, making it easier to apply force stably in greasy or confined spaces. The sliding connection of the push block 24 in the storage slot 22 ensures smooth movement driven by the reset spring 23, thus ensuring that the first stop block 25 and the second stop block 27 are locked or unlocked.

[0037] Both abutment block 1 25 and abutment block 2 27 are wedge blocks. Abutment block 1 25 has an arc-shaped transition edge at its rear end, and abutment block 2 27 has a rounded corner structure at its front end.

[0038] The use of curved transition edges and rounded corners reduces stress concentration at the point of contact, thus preventing structural damage during long-term use.

[0039] Working principle: During use, the external thread 12 at the front end of the connector 1 is first threadedly connected to the connector 2 to achieve initial fixation. At this time, the return spring 23 in the storage box 21 is in its natural state. The push block 24 drives the abutment block 27 on the rotating rod 26 to fit against the inclined surface. Under the pushing force of the return spring 23, the rotating rod 26 is pushed to rotate around the outer wall of the connector 2, so that the locking block 28 at the rear end of the rotating rod 26 is locked into the limiting hole 13 of the connector 1, forming a secondary lock in addition to the threaded connection to prevent vibration from causing the thread to shift. When separation is required for maintenance, push the push block 24 to compress the return spring 23 and drive the abutment block 25 to continuously separate from the abutment block 27. The rotating rod 26 can rotate in the opposite direction to make the locking block 28 disengage from the limiting hole 13. Loosening the connector 2 completes the disassembly, realizing quick installation and maintenance.

[0040] The following points should be noted in this article:

[0041] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0042] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 utility model should be included within the protection scope of the present utility model.

Claims

1. An easy-to-install and maintain aircraft engine lubricating oil pipeline connector, comprising a connector (1), characterized in that: The connector (1) has an external thread (12) at its front end. The outer wall of the external thread (12) is threaded with a connector (2). The upper and lower parts of the outer wall of the connector (2) are fixedly connected to a storage box (21). The outer wall of the opposite end of the storage box (21) has a storage groove (22). The front end of the inner wall of the storage groove (22) is fixedly connected to a return spring (23). The rear end of the return spring (23) is fixedly connected to a push block (24). The rear end of the push block (24) passes through the storage groove (22) and the storage box (21) and is fixedly connected to a stop block one (25). The upper and lower parts of the outer wall of the connector (2) near the rear end of the storage box (21) are rotatably connected to a rotating rod (26). The front end of the lower surface of the rotating rod (26) is fixedly connected to a stop block two (27).

2. The aircraft engine lubricating oil pipeline joint according to claim 1, characterized in that: A connecting pipe (11) is fixedly connected to the outer wall of the rear end of the connector (1).

3. The aircraft engine lubricating oil pipeline joint according to claim 1, characterized in that: Limiting holes (13) are provided at the upper and lower parts of the front end of the outer wall of the connector (1), and a snap-fit ​​block (28) is fixedly connected to the rear end of the lower surface of the rotating rod (26).

4. The aircraft engine lubricating oil pipeline joint according to claim 3, characterized in that: Each of the snap-fit ​​blocks (28) is snapped into the limiting hole (13).

5. The aircraft engine lubricating oil pipeline joint according to claim 1, characterized in that: The outer walls of the push blocks (24) are all provided with anti-slip textures and are all slidably connected to the inner walls of the storage slots (22).

6. The aircraft engine lubricating oil pipeline joint according to claim 1, characterized in that: Both the first abutment (25) and the second abutment (27) are wedges. The rear end of the first abutment (25) is provided with an arc-shaped transition edge, and the front end of the second abutment (27) is provided with a rounded corner structure.

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