Aviation hydraulic pipeline connecting assembly

Abstract

The utility model relates to the technical field of aviation hydraulic pipelines, in particular to an aviation hydraulic pipeline connecting assembly which comprises a first connecting piece and a second connecting piece arranged at one end of the first connecting piece, a locking clamping piece is arranged on the peripheral face of the end, close to the second connecting piece, of the first connecting piece, and a locking mechanism is arranged in the locking clamping piece. A limiting groove is formed in the end face, close to the first connecting piece, of the second connecting piece, and the locking mechanism can be clamped into the limiting groove so that the first connecting piece and the second connecting piece can be connected and limited. The end, close to the second connecting piece, of the first connecting piece extends out of a connecting pipe, the connecting pipe penetrates out of the locking clamping piece and can extend into the second connecting piece, and the outer wall of the connecting pipe can be attached to the inner wall of the second connecting piece. The sealing device is good in sealing effect, low in machining precision requirement and convenient to mount and dismount.

Description

Technical Field

[0001] This utility model relates to the field of aviation hydraulic pipeline technology, specifically to an aviation hydraulic pipeline connection component. Background Technology

[0002] Piping refers to the conduits that transmit working fluid in a hydraulic system. Compared to individual pipes, piping is a rationally arranged piping system. Due to its flexibility, piping is frequently used in hydraulic systems and other fluid-driven mechanical equipment.

[0003] In the aviation industry, hydraulic piping systems have long been plagued by leaks and spills, a problem more pronounced than in other industries. This is because aviation equipment operates in complex high-altitude environments, subjecting hydraulic systems to extreme pressure and temperature fluctuations, which exacerbates wear and tear on the piping. To address this challenge, currently manufactured pipe fittings must be stored in a special environment—liquid nitrogen. This storage condition makes installation and use extremely inconvenient. If the ambient temperature exceeds the specified range, especially if it is too high, the pipe sleeve will rapidly contract due to thermal expansion and contraction, rendering the entire fitting unusable and significantly increasing costs and maintenance difficulties.

[0004] However, existing pipe fittings have a conical-to-conical sealing surface. This structure requires high machining precision; even minor machining errors can significantly reduce the sealing effect, making it difficult for pipe fittings to meet the stringent high-sealing requirements of hydraulic systems in the aerospace industry. Furthermore, most pipe fittings are installed using multiple sets of bolts, which, while enabling connection, makes installation and maintenance inconvenient. Utility Model Content

[0005] To address the technical problems of existing pipeline connectors requiring high precision in the machining of sealing surfaces and inconvenient installation and maintenance due to the use of multiple sets of bolts, this utility model provides an aviation hydraulic pipeline connection component.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An aviation hydraulic pipeline connection assembly includes a first connector and a second connector disposed at one end of the first connector. The outer peripheral surface of the first connector near the second connector is provided with a locking clip, and the locking clip is provided with a locking mechanism. The end face of the second connector near the first connector is provided with a limiting groove, and the locking mechanism can be engaged into the limiting groove to connect and limit the first connector and the second connector. A connecting tube extends from the end of the first connector near the second connector, passes through the locking clip, and can extend into the second connector. The outer wall of the connecting tube can fit against the inner wall of the second connector.

[0008] By adopting the above structural scheme, a locking clip and locking mechanism are provided on the outer circumference of connector one, and a limiting groove is opened on the end face of connector two, allowing the locking mechanism to engage with the limiting groove, thus achieving the connection and limitation between connector one and connector two. This avoids the traditional multi-bolt connection method, simplifies the installation process, reduces installation difficulty, and also makes maintenance more convenient. The connecting pipe extending from connector one can extend into connector two, and its outer wall fits snugly against the inner wall of connector two. Compared with the traditional conical-conical sealing structure, the requirements for machining accuracy are reduced. Even with certain machining errors, a good fit can be guaranteed, thereby improving the sealing effect and meeting the high sealing requirements of hydraulic systems in the aerospace field.

[0009] As a preferred implementation of an aviation hydraulic pipeline connection component, the outer circumferential surface of the connecting pipe is provided with a positioning groove with a stepped cross-section, and the outer surface of the positioning groove is provided with a sealing rib. The positioning groove and the sealing rib are tightly fitted with the groove on the inner wall of the connector.

[0010] With the above structural design, the stepped positioning groove on the outer circumference of the connecting pipe and the sealing ribs on its outer surface can fit tightly with the groove on the inner wall of the connector. This increases the sealing contact area and the layering of the seal, further improving the sealing performance of the connector and reducing the risk of leakage in the hydraulic system.

[0011] As a preferred implementation of an aviation hydraulic pipeline connection assembly, the outer circumferential surface of the connecting pipe is also provided with an inclined slope. The outer circumferential dimension of the inclined slope gradually decreases along the direction from connector one to connector two. The inclined slope is located on the side of the positioning slot away from connector two, and the sealing ring is fitted onto the outer surface of the inclined slope.

[0012] With the above structural design, the outer circumferential slope of the connecting pipe gradually decreases in size from connector one to connector two, and the sealing ring is fitted onto the outer surface of the slope. When the connecting pipe is inserted into connector two, the slope is inserted into the connecting pipe two to form a seal, and the sealing ring is also squeezed under the action of the slope, thereby better filling the gap between the connecting pipe and connector two, playing an auxiliary sealing role, and further improving the overall sealing effect.

[0013] As a preferred implementation of an aviation hydraulic pipeline connection component, the locking clip has several positioning grooves inside, which are arranged around the circumference of the locking clip. Each positioning groove penetrates the locking clip in the axial direction, and the cross-section of the positioning groove is a "T" shape. The locking mechanism includes an adjusting plate, which is slidably engaged inside the positioning groove. A return spring is installed on the side of the adjusting plate facing the outer circumference of the locking clip, and the other end of the return spring abuts against the positioning groove. A limiting clip is connected to the side of the adjusting plate near the second connector, and the limiting clip extends out of the positioning groove.

[0014] With the above structural design, the locking clip has several circumferentially arranged and axially penetrating "T"-shaped positioning grooves inside. The adjusting plate is slidably engaged in these grooves and abuts against them via a return spring. This allows the adjusting plate to slide flexibly and move up and down within the positioning grooves without easily coming out. The locking clip can move with the adjusting plate, facilitating the connection and separation of connector one and connector two, and improving the ease of installation and maintenance.

[0015] As a preferred implementation of an aviation hydraulic pipeline connection component, the cross-section of the defined groove is an "L" shaped structure, and the defined clamp can slide and engage inside the defined groove.

[0016] With the above structural design, the cross-section of the limiting groove is L-shaped, and the return spring provides the limiting clip with the space to move up and down to engage with the limiting groove. The L-shaped design provides better positioning and locking for the limiting clip, ensuring that connector one and connector two will not easily loosen after connection, thus enhancing the reliability and stability of the connection.

[0017] As a preferred implementation of an aviation hydraulic pipeline connection assembly, the adjusting plate has a pushing clip on the side opposite to the limiting clip, and the side of the pushing clip away from the adjusting plate is inclined toward the outer peripheral surface of the locking clip.

[0018] With the above structural design, the adjusting plate has a pushing mechanism that tilts towards the outer periphery of the locking mechanism on the side opposite to the limiting mechanism. This tilting design of the pushing mechanism facilitates the sliding of the adjusting plate when it is used with other components, thereby controlling the movement of the limiting mechanism and providing convenience for the installation and disassembly of the connecting parts.

[0019] As a preferred implementation of an aviation hydraulic pipeline connection assembly, a connecting sleeve is fitted on the outer peripheral surface of the locking clip. The axial length of the connecting sleeve is greater than that of the locking clip. The inner wall of the end of the connecting sleeve away from the second connector is fitted with the outer peripheral surface of the first connector. An inclined member is provided on the inner end face of the connecting sleeve away from the second connector, and the inclined member is adapted to the pushing clip.

[0020] With the above structural design, the connecting sleeve fitted on the outer circumference of the locking clip has an axial length greater than that of the locking clip, and its inner end face away from the second connecting piece has an inclined member adapted to the pushing clip. When the connecting sleeve is operated, the inclined member can push the pushing clip, thereby causing the adjusting plate to slide and locking the limiting clip in the limiting groove.

[0021] As a preferred implementation of an aviation hydraulic pipeline connection assembly, the inner wall of the connecting sleeve is provided with threads, and the outer circumferential surface of the second connector is provided with positioning threads, so that the sleeve can be threadedly connected to the second connector.

[0022] With the above structural design, the inner wall of the connecting sleeve is threaded, and the outer circumferential surface of the second connector is provided with a positioning thread, enabling the connecting sleeve to be threadedly connected to the second connector. The threaded connection is self-locking, ensuring the stability of the connection between the first and second connectors. Furthermore, during installation and disassembly, the operation can be completed simply by rotating the connecting sleeve, further improving the efficiency of installation and maintenance.

[0023] As a preferred implementation of an aviation hydraulic pipeline connection assembly, the adjusting plate has two baffles on both sides of the return spring, and the two baffles are arranged along the axial direction.

[0024] With the above structural design, the adjusting plate has two baffles arranged axially on both sides of the return spring. The baffles prevent the return spring from shifting or twisting during operation, ensuring that the return spring can work normally, extending its service life, and thus ensuring the reliability and stability of the locking mechanism.

[0025] As a preferred implementation of aviation hydraulic pipeline connection components, the sealing ring has a circular arc cross-section.

[0026] With the above structural design, the sealing ring has a circular arc cross-section, which can better adapt to the gap changes between the connecting pipe and the second connecting piece. When squeezed, it can distribute pressure more evenly, thereby filling the gap more effectively, further optimizing the sealing performance and reducing the possibility of leakage.

[0027] The beneficial effects of this utility model include:

[0028] This invention allows for the connection of connector one and connector two by embedding a connecting pipe inside the connector two. The stepped positioning groove reduces fluid flow pressure, and the positioning groove, sealing rib, and sealing ring ensure a tight seal between connector one and connector two. The connecting sleeve, in conjunction with the locking mechanism, allows for quick and easy locking of connector one and connector two, avoiding the time-consuming and labor-intensive process of using multiple sets of bolts. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a top view of the aviation hydraulic pipeline connection assembly in a specific embodiment of this utility model;

[0031] Figure 2 This is a left view of connector one in a specific embodiment of the present utility model;

[0032] Figure 3 This is a right-side view of connector one in a specific embodiment of this utility model;

[0033] Figure 4 This is a left view of connector two in a specific embodiment of this utility model;

[0034] Figure 5 This is a top view of the adjustment plate in a specific embodiment of the present utility model;

[0035] Figure 6 This is a cross-sectional schematic diagram of the aviation hydraulic pipeline connection assembly in a specific embodiment of this utility model;

[0036] Figure 7 This is a cross-sectional schematic diagram of the sealing ring in a specific embodiment of this utility model.

[0037] List of components and reference numerals:

[0038] 1. Connector 1; 101. Conduit 1; 2. Connector 2; 201. Conduit 2; 3. Connecting pipe; 301. Positioning groove; 302. Sealing rib; 303. Inclined slope; 304. Sealing ring; 4. Locking clip; 5. Positioning groove; 6. Adjusting plate; 7. Limiting clip; 8. Return spring; 9. Limiting groove; 10. Pushing clip; 11. Connecting sleeve; 12. Inclined component; 13. Positioning thread; 14. Baffle. Detailed Implementation

[0039] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Reference Figure 1-7This embodiment proposes an aviation hydraulic pipeline connection assembly, including a connector 1 and a connector 2 disposed at one end of connector 1. Both connector 1 and connector 2 are tubular structures. A ring-shaped locking clip 4 is provided on the outer peripheral surface of connector 1 near connector 2. A locking mechanism is provided inside the locking clip 4. A limiting groove 9 is provided on the end face of connector 2 near connector 1. The locking mechanism can engage with the limiting groove 9 to connect and limit connector 1 and connector 2. A connecting pipe 3 extends from the end of connector 1 near connector 2. The connecting pipe 3 passes through the locking clip 4 and can extend into connector 2. The outer wall of the connecting pipe 3 can fit against the inner wall of connector 2. A conduit 101 is connected inside connector 1, and a conduit 201 is connected inside connector 2.

[0041] The outer circumferential surface of the connecting pipe 3 has a positioning groove 301 with a stepped cross-section. A sealing rib 302 is provided on the outer surface of the positioning groove 301. The positioning groove 301 and the sealing rib 302 are tightly fitted with the groove on the inner wall of the connecting member 2. The outer circumferential surface of the connecting pipe 3 also has an inclined slope 303. The outer circumferential dimension of the inclined slope 303 gradually decreases along the direction from the connecting member 1 to the connecting member 2. The inclined slope 303 is located on the side of the positioning groove 301 away from the connecting member 2. A sealing ring 304 is fitted onto the outer surface of the inclined slope 303. The sealing ring 304 has a circular arc cross-section.

[0042] The locking clip 4 has several positioning grooves 5 inside. The positioning grooves 5 are arranged around the circumferential direction of the locking clip 4. Each positioning groove 5 penetrates the locking clip 4 in the axial direction. The cross-section of the positioning groove 5 is a "T" shaped structure.

[0043] The locking mechanism includes an adjusting plate 6, which is slidably engaged inside the positioning groove 5. A return spring 8 is installed on the side of the adjusting plate 6 facing the outer peripheral surface of the locking clip 4, and the other end of the return spring 8 abuts against the positioning groove 5. Two baffles 14 are provided on both sides of the return spring 8 on the adjusting plate 6, and the two baffles 14 are arranged axially. A limiting clip 7 is connected to the side of the adjusting plate 6 near the connecting member 2, and the limiting clip 7 extends out of the positioning groove 5. The limiting groove 9 has an "L" shaped cross-section, and the limiting clip 7 can be slidably engaged inside the limiting groove 9. A pushing clip 10 is provided on the side of the adjusting plate 6 opposite to the limiting clip 7, and the side of the pushing clip 10 away from the adjusting plate 6 is inclined towards the outer peripheral surface of the locking clip 4. A connecting sleeve 11 is fitted onto the outer circumferential surface of the locking clip 4. The axial length of the connecting sleeve 11 is greater than that of the locking clip 4. The inner wall of the end of the connecting sleeve 11 away from the second connector 2 is fitted onto the outer circumferential surface of the first connector 1. An inclined member 12 is provided on the inner end face of the connecting sleeve 11 away from the second connector 2, and the inclined member 12 is adapted to the pushing clip 10. The inner wall of the connecting sleeve 11 is provided with threads, and the outer circumferential surface of the second connector 2 is provided with positioning threads 13, so that the sleeve can be threadedly connected to the second connector 2.

[0044] Work process:

[0045] Prepare all components such as connector 1, connector 2, and connecting sleeve 11, and ensure that the connecting pipe 3, locking clip 4, positioning groove 5, and limiting groove 9 are clean and free of debris.

[0046] With the end of connector 1 with the connecting tube 3 facing connector 2, align the connecting tube 3 with the internal opening of connector 2, and then slowly insert the connecting tube 3 into connector 2. During this process, when the positioning groove 301 and the sealing rib 302 on the outer circumference of the connecting tube 3 reach the groove position on the inner wall of connector 2, they fit tightly together. The stepped structure of the positioning groove 301 and the sealing rib 302 increase the contact area and layering of the seal, thereby improving the sealing performance.

[0047] Continue inserting the connecting tube 3. The inclined slope 303 on the outer periphery of the connecting tube 3 enters the second connector 2. As the outer periphery dimension of the inclined slope 303 gradually decreases along the direction from the first connector 1 to the second connector 2, the sealing ring 304 (with a circular arc cross-section) will be gradually squeezed during the insertion process, further playing a sealing role.

[0048] As the connecting tube 3 is inserted, the locking clip 4 approaches the second connector 2. At this time, since the connecting sleeve 11 has not yet started operating, as the second connector 2 approaches the first connector 1, the limiting clip 7 aligns with the "L"-shaped limiting groove 9 on the end face of the second connector 2. As it approaches further, the limiting clip 7 will gradually slide into the limiting groove 9. The return spring 8 provides the limiting clip 7 with the space to move up and down to engage with the limiting groove 9.

[0049] The connecting sleeve 11 is fitted onto the outer circumferential surface of the locking clip 4, so that the inner wall of the end away from the second connector 2 is fitted with the outer circumferential surface of the first connector 1. Then, the connecting sleeve 11 is rotated. Since the thread on the inner wall of the connecting sleeve 11 is compatible with the positioning thread 13 on the outer circumferential surface of the second connector 2, the connecting sleeve 11 will gradually move towards the second connector 2. The inner end face of the connecting sleeve 11 away from the second connector 2 is provided with an inclined member 12. During the movement of the connecting sleeve 11, the inclined member 12 will contact the pushing clip 10 on the adjusting plate 6. Since the side of the pushing clip 10 away from the adjusting plate 6 is inclined towards the outer circumferential surface of the locking clip 4, the inclined member 12 will push the pushing clip 10, thereby causing the adjusting plate 6 to slide in the "T"-shaped positioning groove 5, so that the limiting clip 7 is further abutted and locked in the limiting groove 9. Finally, the connecting sleeve 11 and the second connector 2 are firmly connected by threads, completing the installation of the first connector 1 and the second connector 2.

[0050] When the aviation hydraulic system is working, the working fluid enters connector 1 from conduit 101, passes through the channel between connecting pipe 3 and connector 2, and then flows out from conduit 201. Due to the tight fit between connecting pipe 3 and the inner wall of connector 2, as well as the sealing effect of positioning groove 301, sealing rib 302, and sealing ring 304, leakage of the working fluid is effectively prevented. At the same time, the locking mechanism ensures the stability of the connection between connector 1 and connector 2, can withstand the pressure generated during hydraulic system operation, and guarantees the normal operation of the entire hydraulic pipeline system.

[0051] During disassembly, rotate the connecting sleeve 11 in the opposite direction to gradually loosen the threaded connection between the connecting sleeve 11 and the connecting part 2. As the connecting sleeve 11 moves away from the connecting part 2, the contact between the tilting part 12 and the pushing clip 10 gradually separates. Under the elastic force of the return spring 8, the adjusting plate 6 slides back to its original position, and the limiting clip 7 and the limiting groove 9 no longer abut. The plate then slides inward and gradually disengages from the limiting groove 9.

[0052] Disconnecting connector 1 and connector 2, the retaining clip 7 will disengage from the retaining groove 9 under the action of the return spring 8. Once the retaining clip 7 is completely disengaged from the retaining groove 9, the connecting tube 3 of connector 1 can be pulled out from inside connector 2. During this process, the sealing ring 304 gradually returns to its original shape and is no longer compressed. The disassembly of connector 1 and connector 2 is now complete, facilitating maintenance or replacement of components.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aviation hydraulic pipeline connection assembly, comprising a first connector (1) and a second connector (2) disposed at one end of the first connector (1), characterized in that, A locking clip (4) is provided on the outer peripheral surface of the end of connector 1 (1) near connector 2 (2). The locking clip (4) is provided with a locking mechanism. A limiting groove (9) is provided on the end face of connector 2 (2) near connector 1 (1). The locking mechanism can be inserted into the limiting groove (9) to connect and limit connector 1 (1) and connector 2 (2). Connector 1 (1) extends a connecting tube (3) from one end near connector 2 (2). The connecting tube (3) passes through the locking clip (4). The connecting tube (3) can extend into connector 2 (2). The outer wall of the connecting tube (3) can fit against the inner wall of connector 2 (2).

2. The aviation hydraulic pipeline connection assembly according to claim 1, characterized in that, The outer circumferential surface of the connecting pipe (3) is provided with a positioning groove (301) with a stepped cross-section. The outer surface of the positioning groove (301) is provided with a sealing rib (302). The positioning groove (301) and the sealing rib (302) are closely fitted with the groove on the inner wall of the connecting part (2).

3. The aviation hydraulic pipeline connection assembly according to claim 2, characterized in that, The outer periphery of the connecting pipe (3) is also provided with an inclined slope (303). The outer periphery dimension of the inclined slope (303) gradually decreases along the direction from the first connector (1) to the second connector (2). The inclined slope (303) is located on the side of the positioning slot (301) away from the second connector (2). The sealing ring (304) is fitted onto the outer surface of the inclined slope (303).

4. The aviation hydraulic pipeline connection assembly according to claim 1, characterized in that, The locking clip (4) has several positioning grooves (5) inside. The several positioning grooves (5) are arranged around the circumferential direction of the locking clip (4). Each positioning groove (5) penetrates the locking clip (4) in the axial direction. The cross-section of the positioning groove (5) is a "T" shaped structure. The locking mechanism includes an adjusting plate (6), which is slidably engaged inside the positioning groove (5). A return spring (8) is installed on the side of the adjusting plate (6) facing the outer peripheral surface of the locking clip (4). The other end of the return spring (8) abuts against the positioning groove (5). A limiting clip (7) is connected to the side of the adjusting plate (6) near the connecting part two (2). The limiting clip (7) extends out of the positioning groove (5).

5. The aviation hydraulic pipeline connection assembly according to claim 4, characterized in that, The cross-section of the limiting groove (9) is an "L" shaped structure, and the limiting clip (7) can slide and engage inside the limiting groove (9).

6. The aviation hydraulic pipeline connection assembly according to claim 4, characterized in that, The adjusting plate (6) has a pushing clip (10) on the side opposite to the limiting clip (7), and the side of the pushing clip (10) away from the adjusting plate (6) is inclined toward the outer peripheral surface of the locking clip (4).

7. The aviation hydraulic pipeline connection assembly according to claim 6, characterized in that, A connecting sleeve (11) is fitted on the outer peripheral surface of the locking clip (4). The axial length of the connecting sleeve (11) is greater than that of the locking clip (4). The inner wall of the end of the connecting sleeve (11) away from the second connector (2) is fitted with the outer peripheral surface of the first connector (1). An inclined part (12) is provided on the inner end face of the connecting sleeve (11) away from the second connector (2). The inclined part (12) is adapted to the pushing clip (10).

8. The aviation hydraulic pipeline connection assembly according to claim 7, characterized in that, The inner wall of the connecting sleeve (11) is provided with threads, and the outer circumferential surface of the connecting part (2) is provided with positioning threads (13). The sleeve (11) can be threadedly connected to the connecting part (2).

9. An aviation hydraulic pipeline connection assembly according to claim 4, characterized in that, The adjusting plate (6) has two baffles (14) on both sides of the reset spring (8), and the two baffles (14) are arranged along the axial direction.

10. An aviation hydraulic pipeline connection assembly according to claim 3, characterized in that, The sealing ring (304) has a circular arc-shaped cross-section.

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