Pipeline joint device

Abstract

The invention relates to the technical field of hydraulic equipment, in particular to a pipeline joint device which comprises a first adapter, a second adapter, a third adapter and a fourth adapter. The second adapter is provided with a second plug-in end matched with the first plug-in end, and the first plug-in end and the second plug-in end can be matched in a plug-in mode to form an outer edge protrusion; a hoop groove matched with the outer edge bulge is formed in the inner side of the hoop; the first safety ring is movably arranged on the first step in the axial direction and has a carry state and a retreat state; and the anti-loose baffle ring is detachably arranged between the first safety ring and the vertical surface of the first step so as to limit the first safety ring in a carry state. When the first safety ring is in a carry state, the first safety ring is close to the outer edge bulge, and at least one part of the first safety ring can lock the hoop in the radial direction; when the first safety ring is in the retreating state, the first safety ring is far away from the outer edge protrusion and close to the vertical face of the first step.

Description

Technical Field

[0001] This invention relates to the field of hydraulic equipment technology, and in particular to a pipeline connector device. Background Technology

[0002] Fully mechanized coal mining is a significant indicator of the modernization of coal mining technology. Hydraulic supports are crucial equipment in fully mechanized mining faces, directly impacting the safety of the entire mine. The pressure of the hydraulic supports is provided by a hydraulic pump station and transmitted to the hydraulic cylinders of the supports via a pipeline system. As coal mine pipelines trend towards higher pressure and larger flow rates, a single working face often has multiple pipeline joints and numerous interfaces, increasing the risk of leakage. Therefore, convenient assembly and disassembly and reliable connection of mine pipeline joints are essential for ensuring safe production.

[0003] Currently, mining pipelines mainly use SKV / SSKV quick-connect fittings. However, in actual use, existing quick-connect fittings are often secured with safety nuts. Due to the harsh working environment of the working face, such as vibration and hydraulic shock, the threads lack effective limiting structures, leading to the possibility of the nut loosening or falling off. This reduces the reliability and safety of the joint, seriously affecting the safe production of the fully mechanized mining face. Summary of the Invention

[0004] This invention provides a pipeline connector device to solve the problem of reduced reliability and safety of quick-connect connectors in the prior art due to loose or missing nuts, thereby enabling more convenient disassembly and assembly and reliable connection of mining pipeline connectors, thus improving the safety and production efficiency of fully mechanized mining faces.

[0005] This invention provides a pipe fitting device, comprising: a first adapter having a first plug-in end, the circumferential surface of the first adapter having a first step; a second adapter having a second plug-in end adapted to the first plug-in end, the first plug-in end and the second plug-in end being able to be inserted and fitted to form an outer edge protrusion; a clamp having a clamp groove on its inner side adapted to the outer edge protrusion; a first safety ring being movably disposed on the first step along the axial direction, having an advanced state and a retracted state; in the advanced state, the first safety ring is close to the outer edge protrusion, and at least a portion of the first safety ring can lock the clamp in the radial direction; in the retracted state, the first safety ring is away from the outer edge protrusion and close to the vertical surface of the first step; and an anti-loosening retaining ring being detachably disposed between the first safety ring and the vertical surface of the first step to limit the first safety ring to the advanced state.

[0006] According to a pipe fitting device of the present invention, the anti-loosening retaining ring is made of an elastic material; and / or, the anti-loosening retaining ring has a C-shaped structure.

[0007] According to a pipe fitting device of the present invention, the clamp has a C-shaped structure; or, the clamp includes two semi-circular clamp bodies, one end of which is connected by a hinge structure.

[0008] According to a pipe fitting device of the present invention, the first safety ring is slidably disposed on the axial surface of the first step; or, a threaded structure is provided between the first safety ring and the axial surface of the first step.

[0009] According to a pipe connector device of the present invention, a stop flange is provided on the outer peripheral surface of the first plug end, and a skirt portion is provided on the second plug end; when the first plug end and the second plug end are plugged in, the first plug end is inserted into the skirt portion, and the end of the skirt portion abuts against the stop flange, and the first plug end and the skirt portion form the outer edge protrusion.

[0010] According to a pipe fitting device of the present invention, an annular groove is provided on the inner circumferential surface of the skirt or the outer circumferential surface of the first insertion end; a sealing ring is provided in the annular groove.

[0011] According to a pipe fitting device of the present invention, the clamp has a cross-sectional shape of Z; in the advanced state, at least a portion of the first safety ring is fitted onto the Z-shaped side edge of the clamp.

[0012] According to a pipe fitting device of the present invention, the outer peripheral surface of the first adapter is provided with a first positioning groove adjacent to the stop flange; the outer peripheral surface of the second adapter is provided with a second positioning groove adjacent to the skirt portion; when the clamp is engaged with the outer edge protrusion, the zigzag side edges on both sides of the clamp are respectively positioned and engaged in the first positioning groove and the second positioning groove.

[0013] According to a pipe fitting device of the present invention, the width of the first positioning groove in the axial direction is greater than the width of the Z-shaped side edge.

[0014] According to a pipe fitting device of the present invention, a second step is formed on the circumferential surface of the second adapter; a second safety ring is provided on the second step in an axial direction; the second safety ring has an advancing state and a retracted state; in the advancing state, at least a portion of the second safety ring is fitted onto the Z-shaped side edge of the clamp; in the retracted state, the first safety ring protrudes away from the outer edge and approaches the vertical surface of the second step.

[0015] The pipe connector device provided by this invention uses a first adapter and a second adapter to form an outer protrusion, and uses a clamp to fix this protrusion structure. It also incorporates an axially movable first safety ring and an anti-loosening retaining ring. When the first safety ring is in the engaged position, it radially locks the clamp, preventing loosening of the connection due to vibration or hydraulic shock. The anti-loosening retaining ring further ensures that the first safety ring remains in the engaged position, effectively solving the problem of easy loosening or falling off of nuts in traditional quick-connect connectors, thereby improving the safety, reliability, and convenience of mining pipe connectors. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the pipe joint device provided by the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the pipe joint device provided by the present invention with the anti-loosening retaining ring removed.

[0019] Figure 3 This is a schematic diagram of the anti-loosening retaining ring of the pipe joint device provided by the present invention.

[0020] Figure 4 This is an exploded structural diagram of the adapter of the pipeline connector device provided by the present invention.

[0021] Figure 5 yes Figure 4 A cross-sectional view of the structure shown.

[0022] Figure label: 10. First adapter; 11. First plug end; 12. First step; 13. First safety ring; 14. Stop flange; 15. Annular groove; 16. Sealing ring; 17. First positioning groove; 20. Second adapter; 21. Second plug end; 22. Skirt; 23. Second positioning groove; 24. Second step; 25. Second safety ring; 30. Clamp; 40. Anti-loosening retaining ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0025] The following is combined Figures 1-5 Specific embodiments of the pipe fitting device of the present invention are described.

[0026] like Figure 1 and Figure 2 As shown, the present invention provides a pipeline connector device aimed at improving the safety and reliability of mine pipeline connections. The device includes: a first adapter 10, having a first insertion end 11, with a first step 12 formed on the circumferential surface of the first adapter 10; a second adapter 20, having a second insertion end 21 adapted to the first insertion end 11, the first insertion end 11 and the second insertion end 21 being able to insert and cooperate to form an outer edge protrusion; a clamp 30, having a clamp groove on its inner side adapted to the outer edge protrusion; a first safety ring 13, movably disposed on the first step 12 along the axial direction, having an advanced state and a retracted state; and an anti-loosening retaining ring 40, detachably disposed between the first safety ring 13 and the vertical surface of the first step 12, to limit the first safety ring 13 to the advanced state. In the first safety ring 13 in the advanced state, the first safety ring 13 protrudes near the outer edge, and at least a portion of the first safety ring 13 can lock the clamp 30 in the radial direction; in the first safety ring 13 in the retracted state, the first safety ring 13 moves away from the outer edge protrusion and is close to the vertical surface of the first step 12.

[0027] Specifically, the first adapter 10 has a first plug-in end 11 for connecting with other components (i.e., the second adapter 20), and a first step 12 is formed on its circumferential surface. The second adapter 20 has a second plug-in end 21 that matches the first plug-in end 11. When the two are combined, an outer edge protrusion structure is formed at the interface, ensuring a tight fit between the two parts. To further reinforce this connection, a clamp 30 with an internal groove is used, which can be fitted onto the outer edge protrusion to firmly fix the two adapters together.

[0028] To overcome the problem of connection loosening caused by vibration or hydraulic shock in harsh working environments, this invention introduces a first safety ring 13 and an anti-loosening retaining ring 40. The first safety ring 13 can be moved axially to the position of the first step 12 and can be in two states according to actual needs: when in the "advanced state", the safety ring protrudes near the outer edge and can apply additional pressure to the clamp 30 in the radial direction, thus providing a reinforcement effect; while in the "retracted state", the safety ring moves away from the outer edge protrusion and moves closer to the first step 12, no longer providing a locking effect to the outside. To ensure that the first safety ring 13 remains in the advanced state even under adverse conditions such as vibration, an anti-loosening retaining ring 40 is added to the design, placed between the first safety ring 13 and the first step 12, effectively restricting the axial movement of the safety ring, ensuring that it continues to perform its locking function, and preventing the risk of leakage due to accidental loosening.

[0029] Furthermore, the aforementioned pipe fitting device not only improves the stability and safety of the entire system but also simplifies the operation process for on-site personnel, making installation and disassembly more convenient and efficient. The use of the anti-loosening retaining ring 40 allows for quick and reliable securing of the first safety ring 13, reducing maintenance time and costs, and also lowering the possibility of production interruptions due to loose connections. Therefore, this invention provides a safer and more reliable mining pipe connection solution, contributing to improved overall operational efficiency and safety of fully mechanized mining faces.

[0030] like Figure 3As shown, in a pipe fitting device according to the present invention, the anti-loosening retaining ring 40 is made of an elastic material; and / or, the anti-loosening retaining ring 40 has a C-shaped structure. Using an elastic material (such as certain engineering plastics or other materials with similar elasticity) to make the anti-loosening retaining ring 40 ensures that it undergoes appropriate deformation during installation, thereby tightly fitting the space between the first safety ring 13 and the first step 12. This not only helps the anti-loosening retaining ring 40 firmly fix the first safety ring 13, preventing it from axially moving due to vibration or impact, but also absorbs external forces to a certain extent, reducing the impact on the entire connection structure. The C-shaped structure of the anti-loosening retaining ring 40 makes installation and disassembly more convenient and quick. Operators can easily insert or remove the anti-loosening retaining ring 40 into a predetermined position through the C-shaped opening without completely disassembling other components. By using a C-shaped anti-loosening retaining ring 40 made of an elastic material, the pipe fitting device provided by the present invention not only strengthens the stability of the connection point but also improves the overall impact resistance and ease of operation.

[0031] According to a pipe fitting device of the present invention, the clamp 30 has a C-shaped structure; or, the clamp 30 comprises two semi-circular clamp bodies, one end of which is connected by a hinge structure. Whether it is a C-shaped structure or a clamp 30 composed of two semi-circular clamp bodies, the clamp 30 is intended to provide a reliable and convenient way to reinforce the connection between the first adapter 10 and the second adapter 20.

[0032] The C-type clamp 30 features an opening, allowing it to be easily fitted over or removed from the outer protrusion. In space-constrained situations, operators can more easily position it correctly and secure it with simple tightening steps. The C-type clamp 30 can also have an additional fastening mechanism (such as a bolt or clip) on one side of the opening to ensure a secure closure and locking after installation, guaranteeing the stability and reliability of the connection.

[0033] The clamp 30 consists of two semi-circular hoops, one end of which is connected by a hinge structure. The hinge structure allows the two hoops to rotate around this point to open or close, forming a complete ring structure. In use, the operator can first open the clamp 30, then pass it around the outer edge protrusion, and finally close the other end and secure it with appropriate fasteners (such as bolts, locks, etc.).

[0034] According to a pipe fitting device of the present invention, a first safety ring 13 is slidably disposed on the axial surface of a first step 12. Alternatively, preferably, a threaded structure is provided between the first safety ring 13 and the axial surface of the first step 12. Specifically, the first safety ring 13 has an internal thread (e.g., a safety nut), while the axial surface of the first step 12 has an external thread. By tightening the first safety ring 13, it can be moved axially and locked in place by the clamp 30. The threaded structure provides a mechanical locking mechanism, increasing the strength and stability of the connection. When the first safety ring 13 is tightened, radial pressure is applied to the clamp 30, thereby further reinforcing the connection. The aforementioned anti-loosening retaining ring 40 further prevents the threaded connection from loosening in harsh working environments, adding extra safety assurance.

[0035] According to a pipe fitting device of the present invention, a stop flange 14 is provided on the outer peripheral surface of a first plug-in end 11, and a skirt portion 22 is provided on a second plug-in end 21. When the first plug-in end 11 and the second plug-in end 21 are plugged in, the first plug-in end 11 is inserted into the skirt portion 22, and the end of the skirt portion 22 abuts against the stop flange 14, forming an outer edge protrusion between the first plug-in end 11 and the skirt portion 22. The stop flange 14 is a raised annular structure that serves to limit insertion when the first plug-in end 11 is inserted into the second plug-in end 21, preventing over-insertion and ensuring correct mating position. When the first plug-in end 11 and the second plug-in end 21 are plugged in, the first plug-in end 11 is inserted into the skirt portion 22 of the second plug-in end 21. At this time, the end of the skirt portion 22 abuts against the stop flange 14 on the first insertion end 11, ensuring a tight fit between the two insertion ends. Through the interaction between the stop flange 14 and the skirt portion 22, a stable outer edge protrusion is formed. When the clamp 30 is fitted onto the outer edge protrusion, it can tightly fix the two insertion ends, preventing them from loosening under vibration or hydraulic impact.

[0036] According to a pipe fitting device of the present invention, an annular groove 15 is provided on the inner circumferential surface of the skirt portion 22 or the outer circumferential surface of the first plug end 11; a sealing ring 16 is provided in the annular groove 15. The annular groove 15 can be provided on the inner circumferential surface of the skirt portion 22 of the second plug end 21 or on the outer circumferential surface of the first plug end 11. The choice of location depends on specific application requirements and design considerations. The sealing ring 16 is usually made of an elastic material (such as rubber, silicone, etc.) that can deform under pressure, thereby filling the tiny gap between the two surfaces and preventing liquid or gas leakage. By providing the sealing ring 16 in the annular groove 15, a reliable sealing barrier can be formed between the first plug end 11 and the second plug end 21.

[0037] According to a pipe fitting device of the present invention, the clamp 30 has a Z-shaped cross-section. In the advanced position, at least a portion of the first safety ring 13 is fitted onto the Z-shaped side edge of the clamp 30. When the first safety ring 13 moves to the advanced position, it covers and presses against the side edge of the clamp 30. In this way, the first safety ring 13 applies not only radial pressure to the clamp 30 but also axial restraint. The engagement between the first safety ring 13 and the Z-shaped side edge of the clamp 30 forms a double locking mechanism, greatly enhancing the stability and safety of the entire connection system.

[0038] According to a pipe fitting device of the present invention, the outer peripheral surface of the first adapter 10 is provided with a first positioning groove 17 adjacent to the stop flange 14; the outer peripheral surface of the second adapter 20 is provided with a second positioning groove 23 adjacent to the skirt portion 22; when the clamp 30 is engaged with the outer edge protrusion, the Z-shaped side edges on both sides of the clamp 30 are respectively positioned and engaged in the first positioning groove 17 and the second positioning groove 23. When the clamp 30 is engaged with the outer edge protrusion, the Z-shaped side edges on both sides of the clamp 30 are respectively positioned and engaged in the first positioning groove 17 and the second positioning groove 23, so that the clamp 30 not only applies radial pressure from the outside to lock the outer edge protrusion, but also provides an additional locking effect in the axial direction through the engagement of the side edges with the positioning grooves.

[0039] Furthermore, according to a pipe fitting device of the present invention, the width of the first positioning groove 17 in the axial direction is greater than the width of the Z-shaped side edge. Since the width of the first positioning groove 17 is greater than the width of the Z-shaped side edge of the clamp 30, this provides greater tolerance for installation. Even if there is a certain positional deviation during installation, the clamp 30 can still smoothly enter the positioning groove, thereby simplifying the installation process. The wider first positioning groove 17 allows the clamp 30 a certain range of movement during installation, enabling the operator to make fine adjustments before final fixing to ensure the optimal mating position. When the first safety ring 13 is in the advanced position, radial pressure is applied to one side of the clamp 30, causing it to fit tightly against the outer edge protrusion.

[0040] According to a preferred embodiment of this application, in order to further enhance the safety and reliability of the pipeline joint device, safety rings and anti-loosening retaining rings 40 can be installed on one or both sides of the clamp (i.e., clamp 30). This not only improves the stability of the connection, but also increases the redundancy of the system, ensuring that if the safety ring on any side fails, the safety ring on the other side can still provide the necessary protection.

[0041] Specifically, in a preferred embodiment, such as Figure 4 and Figure 5As shown, a second step 24 is formed on the circumferential surface of the second adapter 20; a second safety ring 25 is movably disposed on the second step 24 in the axial direction; the second safety ring 25 has an engaged state and a disengaged state; in the engaged state, at least a portion of the second safety ring 25 is fitted onto the zig-shaped side edge of the clamp 30; in the disengaged state, the first safety ring 13 protrudes away from the outer edge and approaches the vertical surface of the second step 24. By respectively providing the first safety ring 13 and the second safety ring 25 on the first adapter 10 and the second adapter 20, a dual safety mechanism is formed. Even if one safety ring fails, the other safety ring can still maintain the stability of the connection.

[0042] Specifically, similar to the first safety ring 13, the second safety ring 25 can also be equipped with an anti-loosening retaining ring 40. The anti-loosening retaining ring 40 can be made of an elastic material or have a C-shaped structure, used to restrict the axial movement of the second safety ring 25, ensuring that it will not accidentally disengage in the engaged position. The anti-loosening retaining ring 40 not only quickly secures the second safety ring 25, reducing the risk of leakage, but also absorbs external impacts, improving the overall vibration resistance of the connection. Due to the symmetrical design, operators can perform the same installation and disassembly steps on both sides, simplifying the maintenance process. By providing a second step 24 on the circumferential surface of the second adapter 20 and installing the second safety ring 25 on the second step 24, the pipe fitting device of the present invention achieves a more comprehensive mechanical locking effect. This dual safety mechanism not only improves the safety and reliability of the connection but also enhances the stability and durability of the system under extreme conditions.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe fitting device, characterized in that, include: The first adapter (10) is provided with a first plug end (11), and a first step (12) is formed on the circumferential surface of the first adapter (10). The second adapter (20) is provided with a second plug end (21) that is adapted to the first plug end (11), and the first plug end (11) and the second plug end (21) can be plugged in to form an outer edge protrusion; The clamp (30) has a groove on its inner side that is adapted to the outer edge protrusion; The first safety ring (13) is movably disposed on the first step (12) in the axial direction and has an advancing state and a retracting state; in the advancing state, the first safety ring (13) is close to the outer edge protrusion, and at least a portion of the first safety ring (13) can lock the clamp (30) in the radial direction; in the retracting state, the first safety ring (13) is away from the outer edge protrusion and close to the vertical surface of the first step (12); An anti-loosening retaining ring (40) is detachably disposed between the first safety ring (13) and the vertical surface of the first step (12) to limit the first safety ring (13) to the advanced position.

2. The pipe fitting device according to claim 1, characterized in that, The anti-loosening retaining ring (40) is made of elastic material; And / or, the anti-loosening retaining ring (40) has a C-shaped structure.

3. The pipe fitting device according to claim 1, characterized in that, The clamp (30) has a C-shaped structure; Alternatively, the clamp (30) may include two semi-circular clamp bodies, one end of which is connected by a hinge structure.

4. The pipe fitting device according to claim 1, characterized in that, The first safety ring (13) is slidably disposed on the axial surface of the first step (12); Alternatively, a threaded structure may be provided between the axial surfaces of the first safety ring (13) and the first step (12).

5. The pipe fitting device according to any one of claims 1-4, characterized in that, The outer peripheral surface of the first plug-in end (11) is provided with a stop flange (14), and the second plug-in end (21) is provided with a skirt portion (22). When the first plug-in end (11) and the second plug-in end (21) are plugged in, the first plug-in end (11) is inserted into the skirt portion (22), and the end of the skirt portion (22) abuts against the stop edge (14). The first plug-in end (11) and the skirt portion (22) form the outer edge protrusion.

6. The pipe fitting device according to claim 5, characterized in that, An annular groove (15) is provided on the inner circumferential surface of the skirt portion (22) or the outer circumferential surface of the first insertion end (11). The annular groove (15) is provided with a sealing ring (16).

7. The pipe fitting device according to claim 5, characterized in that, The cross-sectional shape of the clamp (30) is shaped like a zigzag. In the carry-over state, at least a portion of the first safety ring (13) is fitted onto the zig-shaped side edge of the clamp (30).

8. The pipe fitting device according to claim 7, characterized in that, The outer peripheral surface of the first adapter (10) is provided with a first positioning groove (17) adjacent to the stop edge (14). The outer peripheral surface of the second adapter (20) is provided with a second positioning groove (23) adjacent to the skirt portion (22); When the clamp (30) is engaged with the outer edge protrusion, the zigzag side edges on both sides of the clamp (30) are respectively positioned and engaged in the first positioning groove (17) and the second positioning groove (23).

9. The pipe fitting device according to claim 8, characterized in that, The width of the first positioning groove (17) in the axial direction is greater than the width of the zigzag side edge.

10. The pipe fitting device according to claim 8, characterized in that, The circumferential surface of the second adapter (20) is formed with a second step (24); The second step (24) is provided with a second safety ring (25) that moves along the axial direction; The second safety ring (25) has a carry state and a retraction state; In the carry-in state, at least a portion of the second safety ring (25) is fitted onto the zig-shaped side edge of the clamp (30); In the retracted state, the first safety ring (13) is away from the outer edge protrusion and close to the facade of the second step (24).

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