Hydraulic joint

Abstract

The utility model relates to the technical field of hydraulic machinery, in particular to a hydraulic connector. The connector comprises a connector body, one end of the connector body is connected with an axially-limited and circumferentially-rotatable connector nut, the end, away from the connector nut, of the connector body is fixedly connected with a fastening sleeve, and the outer diameter of the end, close to the connector nut, of the connector body is provided with a first limiting protruding ring. The end, close to the first limiting convex ring, of the connector nut is provided with a second limiting convex ring abutting against the side face of the first limiting convex ring, the connector body is further provided with a third limiting convex ring, the first limiting convex ring and the third limiting convex ring form a limiting groove, and the second limiting convex ring is located in the limiting groove. An elastic sealing gasket is arranged between the first limiting convex ring and the second limiting convex ring; after the prior art is improved, installation is convenient and labor-saving, and connection between the connector and a connecting pipe fitting is firm and not prone to loosening and falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic machinery, in particular to a hydraulic joint. Background Art

[0002] Hydraulic connectors are components used to connect various hydraulic components (such as pumps, delivery lines, reversing valves, shut-off valves, hydraulic motors, and hydraulic cylinders) to form a closed circuit. Their primary function is to ensure the smooth flow of fluid within the hydraulic system while preventing leakage and guaranteeing proper system operation.

[0003] For example, a Chinese patent document with authorization number CN220770391U discloses a high-seal hydraulic joint, including a joint body, an end of the joint body having an external thread and connected to a connecting pipe through the external thread, an end of the joint body having an inward-facing sealing groove, and a sealing device sealed and pressed by the connecting pipe in the sealing groove; when installing the above-mentioned hydraulic joint, the joint body needs to be rotated as a whole to make the threaded connection between the joint body and the connecting pipe, which is not very convenient and laborious; in addition, when the other end of the joint body is directly inserted into the external connecting pipe, it is easy to fall off due to the shaking of the pipe.

[0004] Therefore, it is necessary to improve the above shortcomings of the prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a hydraulic joint in view of the above-mentioned deficiencies in the prior art, so as to solve the problems in the prior art of inconvenient installation and easy falling off due to shaking of the pipe.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a hydraulic joint, comprising a joint body, one end of which is connected to an axially limited and circumferentially rotatable joint nut, and one end of the joint body away from the joint nut is fixedly connected to a fastening sleeve.

[0007] By adopting the above technical solution, when one end of the joint nut of the hydraulic joint is installed, the joint nut is directly rotated to connect with the external thread of the external connecting pipe fitting and tightened to achieve a sealed connection between the end of the joint body and the inner diameter of the external connecting pipe fitting. During the rotation of the joint nut, the joint body does not need to rotate accordingly, which is more convenient and labor-saving. In addition, the joint body is fixedly connected to the fastening sleeve away from one end of the joint nut, and the outer diameter surface of the joint body is tightly attached to the inner diameter surface of the external connecting pipe fitting. At the same time, the inner diameter surface of the fastening sleeve is tightly attached to the outer diameter surface of the external connecting pipe fitting, thereby limiting the inner and outer diameter surfaces of the external connecting pipe fitting at the same time, so that the connection between the joint body and the connecting pipe fitting is more firm and not easy to loosen and fall off.

[0008] The above technical solution is further configured as follows: a first limiting protrusion is provided on the outer diameter of one end of the joint body close to the joint nut, and a second limiting protrusion is provided on the end of the joint nut close to the first limiting protrusion, which abuts against the side of the first limiting protrusion. A third limiting protrusion is also provided on the joint body, and the first limiting protrusion and the third limiting protrusion form a limiting groove, and the second limiting protrusion is located in the limiting groove.

[0009] By adopting the above technical solution, the second limiting protrusion of the joint nut is confined in the limiting groove formed by the first limiting protrusion and the third limiting protrusion, thereby limiting the axial position of the joint nut and preventing it from separating from the joint body; at the same time, the joint nut can rotate circumferentially relative to the joint body, and the joint body does not need to be rotated during installation.

[0010] The above technical solution is further configured as follows: an elastic sealing gasket is provided between the first limiting convex ring and the second limiting convex ring.

[0011] By adopting the above technical solution, an elastic sealing gasket is set between the first limiting convex ring and the second limiting convex ring, which not only improves the sealing between the joint body and the joint nut, but also utilizes the elastic force of the elastic sealing gasket to prevent loosening between the joint body and the connecting pipe fitting, thereby further improving the firmness.

[0012] The above technical solution is further configured as follows: the fastening sleeve is bell-shaped and has an inner diameter surface provided with a plurality of annular steps.

[0013] By adopting the above technical solution, the bell-shaped structure cooperates with a plurality of annular steps and external connecting pipes, thereby achieving a better fastening and limiting effect.

[0014] The above technical solution is further configured as follows: both ends of the joint body are configured as arc surfaces with narrowed outer diameters.

[0015] By adopting the above technical solution, the arc surfaces at the two ends of the joint body enable both ends of the joint body to be inserted into the external connecting pipe more smoothly.

[0016] The beneficial effects achieved by the utility model are: easy and labor-saving installation, firm connection with the connecting pipe fittings and not easy to loosen or fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0019] Figure 3 It is a cross-sectional view of an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the connector body in the embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of the exploded structure of the joint nut in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-5 As shown in, a hydraulic joint comprises a joint body 1, one end of the joint body 1 is connected to a joint nut 2 which is axially limited and circumferentially rotatable, and the end of the joint body 1 away from the joint nut 2 is fixedly connected to a fastening sleeve 3, a first limiting convex ring 11 is provided on the outer diameter of one end of the joint body 1 close to the joint nut 2, and a second limiting convex ring 21 which abuts against the side surface of the first limiting convex ring 11 is provided on the end of the joint nut 2 close to the first limiting convex ring 11, a third limiting convex ring 12 is also provided on the joint body 1, the first limiting convex ring 11 and the third limiting convex ring 12 form a limiting groove 10, the second limiting convex ring 21 is located in the limiting groove 10, an elastic sealing gasket 4 is provided between the first limiting convex ring 11 and the second limiting convex ring 21, the fastening sleeve 3 is bell-shaped and the inner diameter surface is provided with a plurality of annular steps 31, and the two ends of the joint body 1 are set as arc surfaces with narrowed outer diameter.

[0024] In the above embodiment, when one end of the joint nut 2 of the hydraulic joint is installed, the joint nut 2 is directly rotated to connect with the external thread of the external connecting pipe fitting and tightened, so that the end of the joint body 1 is sealed with the inner diameter of the external connecting pipe fitting. During the rotation of the joint nut 2, the joint body 1 does not need to rotate accordingly, which is more convenient and labor-saving; in addition, the joint body 1 is fixedly connected to the fastening sleeve 3 away from one end of the joint nut 2, and the outer diameter surface of the joint body 1 is tightly attached to the inner diameter surface of the external connecting pipe fitting, and at the same time, the inner diameter surface of the fastening sleeve 3 is tightly attached to the outer diameter surface of the external connecting pipe fitting, thereby limiting the inner and outer diameter surfaces of the external connecting pipe fitting at the same time, so that the connection between the joint body 1 and the connecting pipe fitting is more firm and not easy to loosen and fall off.

Claims

1. A hydraulic joint, comprising a joint body, characterized in that: One end of the joint body is connected to a joint nut which is axially limited and circumferentially rotatable, and one end of the joint body away from the joint nut is fixedly connected to a fastening sleeve.

2. A hydraulic joint according to claim 1, characterized in that: A first limiting protrusion is provided on the outer diameter of one end of the joint body near the joint nut, and a second limiting protrusion is provided on the end of the joint nut near the first limiting protrusion, which abuts against the side of the first limiting protrusion. A third limiting protrusion is also provided on the joint body, and the first limiting protrusion and the third limiting protrusion form a limiting groove, and the second limiting protrusion is located in the limiting groove.

3. A hydraulic joint according to claim 2, characterized in that: An elastic sealing gasket is provided between the first limiting convex ring and the second limiting convex ring.

4. A hydraulic joint according to any one of claims 1 to 3, characterized in that: The fastening sleeve is bell-shaped and has an inner diameter surface provided with a plurality of annular steps.

5. A hydraulic joint according to claim 4, characterized in that: The two ends of the joint body are configured as arc surfaces with narrowed outer diameters.

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