A double seal ring self-adapting hydraulic joint

Abstract

This utility model discloses a double-sealing-ring adaptive hydraulic joint, relating to the field of hydraulic joint technology. It includes a joint body comprising an insertion head assembly and a threaded head assembly. The insertion head assembly includes a first connecting pipe with a positioning retaining ring fixedly connected to its wall and an external threaded sleeve fixedly connected to one end of its wall. The threaded head assembly includes a second connecting pipe with a threaded locking sleeve slidably fitted onto its wall and a support ring fixedly connected to one end of its wall. The joint body provided by this utility model achieves a stable seal and facilitates quick connection and disassembly while simultaneously providing anti-loosening and anti-tightening protection. This solves the problems of loosening and sealing failure caused by equipment and hydraulic system vibration in double-sealing-ring adaptive hydraulic joints, leading to leakage and safety hazards. Furthermore, it addresses the shortcomings of existing designs, such as insufficient vibration adaptability and lack of effective anti-loosening measures.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic joint technology, specifically to a double-sealing-ring adaptive hydraulic joint. Background Technology

[0002] Hydraulic fittings are key connectors in hydraulic systems, used to connect pipes, pumps, valves and other components to achieve sealed transmission of media such as hydraulic oil. They are classified into types such as threaded, compression fittings and flanges according to the connection method, and need to be adapted to working conditions such as pressure and temperature. Their sealing and connection performance directly affects the stability of the system and are the basic components to ensure the efficient operation of the hydraulic system.

[0003] A search revealed the following publication (announcement) number: CN209340695U, entitled "Hydraulic Fitting," which includes a first fitting and a second fitting used in conjunction with the first fitting; the first fitting and the second fitting can each be sealed; when the first fitting and the second fitting are connected, the first core abuts against the second core, etc. This utility model can isolate the oil in each fitting before the two fittings are separated, preventing oil leakage.

[0004] The above technical solution has the following shortcomings;

[0005] In practical use, the above-mentioned solutions are prone to loosening and sealing failure due to vibration. During equipment operation, mechanical vibrations are caused by engine piston movement and high-speed motor rotation. High-speed fluid flow, pressure fluctuations, and periodic pump operation in the hydraulic system also generate significant vibrations. These vibrations are transmitted to the joints through the equipment structure and pipelines. The mechanical stress generated by the vibrations causes the threaded connections of the joints to gradually loosen. After the joints loosen, gaps appear between the double sealing rings and the pipe or equipment port, reducing the compression of the sealing rings and lowering the sealing specific pressure, making it impossible to maintain an effective seal. This leads to liquid or gas leakage, resulting in resource waste and even safety hazards such as fires and explosions. The existing joint design is not sufficiently adaptable to vibration, the sealing structure does not fully consider dynamic loads, and there is a lack of effective anti-loosening measures. Utility Model Content

[0006] In view of the problems existing in the current double-sealing ring adaptive hydraulic joint, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a double-sealing ring adaptive hydraulic joint, which solves the problems of loose connection and sealing failure caused by equipment and hydraulic system vibration, which leads to leakage and safety hazards. Furthermore, the existing design is not adaptable to vibration and lacks effective anti-loosening measures.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A double-sealing-ring adaptive hydraulic connector includes a connector body, the connector body including an insertion head assembly and a threaded head assembly, the insertion head assembly including a first connecting pipe, a positioning retaining ring fixedly connected to the wall of the first connecting pipe, and an external threaded sleeve fixedly connected to one end of the wall of the first connecting pipe; the threaded head assembly including a second connecting pipe, a threaded locking sleeve slidably sleeved on the wall of the second connecting pipe, and a support ring fixedly connected to one end of the wall of the second connecting pipe.

[0010] One end of the first connecting pipe and the second connecting pipe is fixedly connected to a connecting flange. A sealing connection mechanism is provided between the insert head assembly and the threaded head assembly. U-shaped brackets are fixedly connected to the side walls of both ends of the threaded locking sleeve. T-shaped clamping plates are rotatably connected between the two U-shaped brackets. Both T-shaped clamping plates are engaged with positioning clamping rings. The side walls of both ends of the positioning clamping ring are provided with limiting mechanisms that engage with the T-shaped clamping plates. A spiral buffer cavity is opened in the cavity of both the first connecting pipe and the second connecting pipe.

[0011] Preferably, the sealing connection mechanism includes a double sealing groove, a double sealing ring, a stepped groove, and a silicone stepped connecting tube head. The side wall of the support ring is provided with a double sealing groove. One end of the external threaded sleeve is fixedly connected to a double sealing ring, which engages with the double sealing groove. One end of the second connecting tube is provided with a stepped groove. One end of the first connecting tube is fixedly connected to a silicone stepped connecting tube head, which is inserted into the stepped groove.

[0012] Preferably, the limiting mechanism includes a limiting slot, a sliding head, a spring, an adjusting groove, and an operating ring. The side walls of the T-shaped plates at both ends are provided with limiting slots. The cavities at both ends of the positioning ring are slidably connected to sliding heads. The side walls of the sliding heads at both ends are fixedly connected to springs. The side walls at both ends of the positioning ring are provided with adjusting grooves and slidably connected to operating rings. The inner side walls at both ends of the operating ring are fixedly connected to the side walls of the corresponding sliding heads. The sliding heads at both ends are inserted into the corresponding limiting slots.

[0013] Preferably, the positioning ring includes a stepped support ring, and U-shaped limiting seats are fixedly connected to both side walls of the stepped support ring, and the U-shaped limiting seats at both ends are engaged with corresponding T-shaped plates.

[0014] Preferably, the double sealing ring consists of two sealing rings, each with a tapered surface.

[0015] Furthermore, the sidewall of the operating ring is provided with friction damping grooves.

[0016] Preferably, the surfaces of the insertion head assembly and the threaded head assembly are provided with a rust-proof zinc-aluminum alloy coating, and the cavities of the insertion head assembly and the threaded head assembly are provided with a corrosion-resistant fluorocarbon resin coating.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. This utility model utilizes an external threaded sleeve and a threaded locking sleeve for initial locking. The T-shaped card plate and the positioning ring engage with the sliding card head of the limiting mechanism, which is inserted into the limiting slot to form a double anti-loosening structure. The U-shaped limiting card seat restricts the radial displacement of the T-shaped card plate, effectively preventing equipment vibration from causing the connection to loosen and improving the connection stability.

[0019] 2. This utility model utilizes a double-sealing snap ring and a double-sealing slot in a sealing connection mechanism, and a silicone stepped connecting pipe head and a stepped slot to form a double seal. The conical surface design of the double-sealing snap ring enhances the fit, and the sealing effect increases with pressure under hydraulic action, which can prevent media leakage.

[0020] 3. This utility model utilizes the spiral buffer chamber to buffer pressure fluctuations in the hydraulic system, reducing the impact of vibration on the connection parts. The anti-rust zinc-aluminum alloy coating on the surface of the insertion head assembly and the threaded head assembly, as well as the anti-corrosion fluorocarbon resin coating inside the cavity, enhance corrosion resistance and extend service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a front sectional view of the present invention;

[0024] Figure 3 This is a side sectional view of the present invention;

[0025] Figure 4 This is a partial perspective view of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Connector body; 2. Insert head assembly; 3. Threaded head assembly; 4. First connecting pipe; 5. Positioning retaining ring; 6. External threaded sleeve; 7. Second connecting pipe; 8. Threaded locking sleeve; 9. Support ring; 10. Connecting flange; 11. U-shaped bracket; 12. T-shaped clamping plate; 13. Spiral buffer chamber; 14. Double sealing groove; 15. Double sealing retaining ring; 16. Stepped groove; 17. Silicone stepped connecting pipe head; 18. Limiting bayonet; 19. Sliding clamp; 20. Spring; 21. Adjusting slide; 22. Operating ring; 23. Stepped support ring; 24. U-shaped limiting seat; 25. Friction damping texture. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model discloses a double-sealing ring adaptive hydraulic joint.

[0030] This utility model provides, for example Figure 1-4 A double-sealing-ring adaptive hydraulic connector is shown, including a connector body 1. The connector body 1 includes an insertion head assembly 2 and a threaded head assembly 3. The insertion head assembly 2 includes a first connecting pipe 4. A positioning retaining ring 5 is fixedly connected to the wall of the first connecting pipe 4. An external threaded sleeve 6 is fixedly connected to one end of the wall of the first connecting pipe 4. The threaded head assembly 3 includes a second connecting pipe 7. A threaded locking sleeve 8 is slidably sleeved on the wall of the second connecting pipe 7. A support ring 9 is fixedly connected to one end of the wall of the second connecting pipe 7.

[0031] One end of the first connecting pipe 4 and the second connecting pipe 7 is fixedly connected to a connecting flange 10. A sealing connection mechanism is provided between the insert head assembly 2 and the threaded head assembly 3. U-shaped brackets 11 are fixedly connected to the side walls of both ends of the threaded locking sleeve 8. T-shaped clamping plates 12 are rotatably connected between the two U-shaped brackets 11. Both ends of the T-shaped clamping plates 12 are engaged with the positioning clamping ring 5. The side walls of both ends of the positioning clamping ring 5 are provided with a limiting mechanism that engages with the T-shaped clamping plate 12. A spiral buffer cavity 13 is provided in the cavity of both the first connecting pipe 4 and the second connecting pipe 7. The hydraulic pipeline is quickly connected by the connector body 1 through the insert head assembly 2 and the threaded head assembly 3. The first connecting pipe 4 and the second connecting pipe 7 provide a channel for the flow of medium. The positioning clamping ring 5 provides a positioning base for the connection of the insert head assembly 2 and the threaded head assembly 3. The 6th threaded locking sleeve 8 is used to achieve initial locking. The support ring 9 is used to limit and support the threaded locking sleeve 8 to prevent excessive slippage. The connecting flange 10 is used to facilitate the fixed connection between the connector body 1 and the external pipeline. The sealing connection mechanism is used to improve the sealing performance of the connection between the insert head assembly 2 and the threaded head assembly 3 to prevent media leakage. The T-shaped clamping plate 12 is used to engage with the positioning clamping ring 5 to form a double anti-loosening structure, which enhances the connection stability. The spiral buffer chamber 13 is used to buffer the pressure fluctuations in the hydraulic system and reduce the impact of vibration on the connection. This solves the problem that the double sealing ring adaptive hydraulic connector is prone to loosening and sealing failure due to equipment and hydraulic system vibration, which leads to leakage and safety hazards. In addition, the existing design is not adaptable to vibration and lacks effective anti-loosening measures.

[0032] To improve the sealing performance of the connection between the insert assembly and the threaded head assembly and prevent media leakage, such as Figure 2 and 4 The sealing connection mechanism includes a double-seal groove 14, a double-seal retaining ring 15, a stepped groove 16, and a silicone stepped connecting tube head 17. The side wall of the support ring 9 has a double-seal groove 14. One end of the external threaded sleeve 6 is fixedly connected to the double-seal retaining ring 15, which engages with the double-seal groove 14. One end of the second connecting tube 7 has a stepped groove 16, and one end of the first connecting tube 4 is fixedly connected to the silicone stepped connecting tube head 17, which is inserted into the stepped groove 16. The double-seal retaining ring 15 and the double-seal groove 14 engage to form the first seal, and the silicone stepped connecting tube head 17 and the stepped groove 16 insert to form the second seal. The double-seal structure greatly improves the sealing performance, and the silicone material has a certain elasticity, which can adapt to the displacement caused by slight vibration and ensure the sealing effect.

[0033] To prevent the T-shaped retaining plate from detaching from the positioning retaining ring and to enhance the anti-loosening effect, such as Figure 1-3As shown, the limiting mechanism includes a limiting slot 18, a sliding head 19, a spring 20, an adjusting groove 21, and an operating ring 22. Limiting slots 18 are provided on the side walls of both ends of the T-shaped plates 12. Sliding heads 19 are slidably connected to the cavities at both ends of the positioning ring 5. Springs 20 are fixedly connected to the side walls of both sliding heads 19. Adjusting grooves 21 are provided on the side walls at both ends of the positioning ring 5, and operating rings 22 are slidably connected thereto. The inner side walls at both ends of the operating ring 22 are fixedly connected to the side walls of the corresponding sliding heads 19. The sliding heads 19 are inserted into the corresponding limiting slots 18. The springs 20 push the sliding heads 19 into the limiting slots 18, firmly locking the T-shaped plates 12 and the positioning ring 5, preventing vibration from causing the T-shaped plates 12 to fall off. The sliding ring 22 can slide along the adjusting groove 21 to disengage the sliding heads 19 from the limiting slots 18, facilitating disassembly and operation.

[0034] To improve the stability of the engagement between the T-shaped clamping plate and the positioning ring, such as Figure 1-3 As shown, the positioning ring 5 includes a stepped support ring 23. Both ends of the stepped support ring 23 are fixedly connected to U-shaped limiting seats 24. The U-shaped limiting seats 24 at both ends engage with the corresponding T-shaped locking plates 12. The stepped support ring 23 provides stable support for the U-shaped limiting seats 24. When the U-shaped limiting seats 24 engage with the T-shaped locking plates 12, they can limit the radial displacement of the T-shaped locking plates 12. In conjunction with the limiting mechanism, the anti-loosening effect is further enhanced, and the connection stability is improved.

[0035] To enhance the sealing fit between the double-sealing retaining ring and the double-sealing retaining groove, such as Figure 2 and 4 As shown, the double sealing ring 15 consists of two sealing rings, each with a tapered surface. The two sealing rings form a double seal. The tapered surface design makes the double sealing ring 15 fit more tightly when it engages with the double sealing groove 14. Under hydraulic pressure, the sealing effect increases with pressure, thus improving the reliability of the seal.

[0036] To facilitate the sliding adjustment of the operating ring, such as Figure 1 As shown, the side wall of the operating ring 22 is provided with friction damping grooves 25. The friction damping grooves 25 are used to increase the friction between the hand and the operating ring 22, prevent slippage during adjustment, and improve the convenience and stability of operation.

[0037] To improve the corrosion resistance and service life of the joint, such as Figure 1-4 As shown, the surfaces of the insertion head assembly 2 and the threaded head assembly 3 are coated with a rust-proof zinc-aluminum alloy coating, and the cavities of the insertion head assembly 2 and the threaded head assembly 3 are coated with a corrosion-resistant fluorocarbon resin coating. The rust-proof zinc-aluminum alloy coating can effectively prevent the joint surface from rusting and adapt to harsh environments such as humidity. The corrosion-resistant fluorocarbon resin coating can resist the corrosion of hydraulic media, protect the inner surface of the connecting pipe cavity, and extend the service life of the joint.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double seal ring self-adapting hydraulic joint comprising a joint body (1), characterized in that, The connector body (1) includes an insertion head assembly (2) and a threaded head assembly (3). The insertion head assembly (2) includes a first connecting tube (4). A positioning retaining ring (5) is fixedly connected to the wall of the first connecting tube (4). An external threaded sleeve (6) is fixedly connected to one end of the wall of the first connecting tube (4). The threaded head assembly (3) includes a second connecting tube (7). A threaded locking sleeve (8) is slidably sleeved on the wall of the second connecting tube (7). A support ring (9) is fixedly connected to one end of the wall of the second connecting tube (7). One end of the first connecting pipe (4) and the second connecting pipe (7) is fixedly connected to a connecting flange (10). A sealing connection mechanism is provided between the insert head assembly (2) and the threaded head assembly (3). U-shaped brackets (11) are fixedly connected to the side walls of both ends of the threaded locking sleeve (8). T-shaped clamps (12) are rotatably connected between the two ends of the U-shaped brackets (11). The two ends of the T-shaped clamps (12) are engaged with the positioning clamps (5). The two ends of the positioning clamps (5) are provided with a limiting mechanism that engages with the T-shaped clamps (12). A spiral buffer cavity (13) is opened in the cavity of both the first connecting pipe (4) and the second connecting pipe (7).

2. A dual seal ring self-adapting hydraulic fitting according to claim 1, wherein, The sealing connection mechanism includes a double sealing groove (14), a double sealing ring (15), a stepped groove (16), and a silicone stepped connecting tube head (17). The side wall of the support ring (9) is provided with a double sealing groove (14). One end of the external threaded sleeve (6) is fixedly connected to a double sealing ring (15). The double sealing ring (15) is engaged with the double sealing groove (14). One end of the second connecting tube (7) is provided with a stepped groove (16). One end of the first connecting tube (4) is fixedly connected to a silicone stepped connecting tube head (17). The silicone stepped connecting tube head (17) is inserted into the stepped groove (16).

3. A dual seal ring self adaptive hydraulic fitting as claimed in claim 1, wherein, The limiting mechanism includes a limiting slot (18), a sliding head (19), a spring (20), an adjusting groove (21), and an operating ring (22). The side walls of the T-shaped plates (12) at both ends are provided with limiting slots (18). The cavities at both ends of the positioning ring (5) are slidably connected with sliding heads (19). The side walls of the sliding heads (19) at both ends are fixedly connected with springs (20). The side walls at both ends of the positioning ring (5) are provided with adjusting grooves (21) and are slidably connected with operating rings (22). The inner side walls at both ends of the operating ring (22) are fixedly connected to the side walls of the corresponding sliding heads (19). The sliding heads (19) at both ends are inserted into the corresponding limiting slots (18).

4. The double-sealing ring adaptive hydraulic joint according to claim 1, characterized in that, The positioning ring (5) includes a stepped support ring (23), and U-shaped limiting seats (24) are fixedly connected to both side walls of the stepped support ring (23). The U-shaped limiting seats (24) at both ends are engaged with the corresponding T-shaped plates (12).

5. A dual seal ring self adaptive hydraulic fitting as claimed in claim 2, wherein, The double sealing ring (15) consists of two sealing rings, each with a tapered surface.

6. A dual seal ring self adaptive hydraulic fitting as claimed in claim 3, wherein, The sidewall of the operating ring (22) is provided with friction damping grooves (25).

7. A dual seal ring self adaptive hydraulic fitting as claimed in claim 1, wherein, The surfaces of the insertion head assembly (2) and the threaded head assembly (3) are provided with a rust-proof zinc-aluminum alloy coating, and the cavities of the insertion head assembly (2) and the threaded head assembly (3) are provided with a corrosion-resistant fluorocarbon resin coating.

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