Sealing structure and hydraulic pipe joint for hydraulic hose connection

Abstract

The utility model relates to the technical field of hydraulic pipe joints, in particular to a sealing structure and a hydraulic pipe joint for hydraulic hose connection, which comprises a hydraulic pipe joint, nuts arranged at two ends of the hydraulic pipe joint, gaskets arranged in the nuts, a lining plate fixed at one end of each gasket, and a limit rod groove arranged on the surface of the lining plate. One end of a limiting rod is movably inserted into the limiting rod groove; the device has the beneficial effects that the gasket is adhered to the lining plate, the limiting rod groove is formed in the side wall of the lining plate, the limiting rod hole is formed in the surface of the nut, one end of the limiting rod stays in the limiting rod hole, and the other end of the limiting rod is inserted into the limiting rod, so that the lining plate and the gasket are limited in the nut; when the gasket and the lining plate are used, limiting can be relieved by retreating the limiting rod from the limiting rod groove, the old gasket and the lining plate are taken down, and then the new gasket and the lining plate are limited in the nut, so that the gasket is prevented from being lost due to free falling, and meanwhile, the gasket can be conveniently and actively replaced.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic pipe joints, in particular to a sealing structure and a hydraulic pipe joint for connecting a hydraulic hose. Background Art

[0002] Hydraulic hose connection is usually achieved using hydraulic pipe joints. Hydraulic pipe joints are components in hydraulic systems that connect high-pressure oil pipes. There are many types of hydraulic pipe joints, but their ends are usually provided with nuts, and the inner wall of the nut is provided with threads. When connecting the hydraulic pipe joint to the hydraulic hose, the end of the hydraulic hose is usually inserted into the nut of the hydraulic pipe joint, and the connection is made by tightening the threads between the two. The connection between the hydraulic hose and the hydraulic pipe joint needs to have good sealing properties.

[0003] In the prior art, a gasket is usually set in the nut of the hydraulic pipe joint. After the hydraulic hose is inserted into the nut and tightened, the pipe head of the hydraulic hose will rest on the surface of the gasket. The gasket is soft and highly elastic, and can seal the gap between the hydraulic hose and the hydraulic pipe joint, thereby ensuring the sealing of the connection between the hydraulic hose and the hydraulic pipe joint.

[0004] However, the existing method of setting the gasket is either to place it directly in the nut or to glue it to the end of the hydraulic pipe joint. Direct placement is likely to cause the gasket to fall and be lost when the hydraulic pipe joint is disassembled and assembled, and gluing it is very troublesome to remove the old gasket when the gasket needs to be replaced. Therefore, it is necessary to design a sealing structure that makes the gasket neither easy to lose nor difficult to replace. Utility Model Content

[0005] The utility model aims to provide a sealing structure and a hydraulic pipe joint for connecting a hydraulic hose, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure and a hydraulic pipe joint for connecting a hydraulic hose, comprising: a hydraulic pipe joint, nuts are arranged at both ends of the hydraulic pipe joint, a gasket is arranged in the nut, a lining plate is fixed to one end of the gasket, a limit rod groove is provided on the surface of the lining plate, one end of the limit rod is movably inserted in the limit rod groove, the other end of the limit rod is movably inserted in the limit rod hole, and the limit rod hole is provided on the surface of the nut.

[0007] Preferably, the limiting rod groove is a cylindrical groove body structure, the limiting rod is a circular rod body structure, and the diameter of the limiting rod is the same as the diameter of the limiting rod groove.

[0008] Preferably, two groups of the limiting rod grooves are provided, and the two groups of limiting rod grooves are symmetrically distributed about the lining plate.

[0009] Preferably, a sleeve is fixed at the position where the limiting rod hole is opened on the outer wall surface of the nut, and a spring plate is slidably connected in the sleeve. One end of the spring plate is fixed on the surface of the limiting rod, and a spring is fixed on the other end of the spring plate, and the other end of the spring is fixed on the inner wall of the sleeve.

[0010] Preferably, a pull rod hole is formed at one end of the sleeve away from the nut, one end of the pull rod is movably inserted in the pull rod hole, the other end of the pull rod is fixed on the surface of the spring plate, and a handle is fixed at the end of the pull rod away from the spring plate.

[0011] A hydraulic pipe joint for connecting a hydraulic hose comprises the sealing structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The sealing structure and the hydraulic pipe joint for connecting the hydraulic hose proposed by the utility model are achieved by adhering the gasket to the lining plate, opening a limit rod groove on the side wall of the lining plate, and opening a limit rod hole on the surface of the nut, one end of the limit rod stays in the limit rod hole and the other end is inserted into the limit rod, so that the lining plate and the gasket are limited in the nut. When the gasket needs to be replaced, the limit rod can be released by withdrawing the limit rod from the limit rod groove, the old gasket and lining plate are removed, and then the new gasket and lining plate are limited in the nut, so that the gasket can be prevented from freely falling and causing the gasket to be lost, and the gasket can be actively replaced conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0017] In the figure: hydraulic pipe joint 1, nut 2, gasket 3, lining plate 4, limit rod groove 5, limit rod 6, limit rod hole 7, sleeve 8, spring plate 9, pull rod 10, spring 11, pull rod hole 12, handle 13. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: a sealing structure and a hydraulic pipe joint for connecting a hydraulic hose, comprising: a hydraulic pipe joint 1, nuts 2 are arranged at both ends of the hydraulic pipe joint 1, a gasket 3 is arranged in the nut 2, a lining plate 4 is fixed at one end of the gasket 3, a limiting rod groove 5 is arranged on the surface of the lining plate 4, one end of a limiting rod 6 is movably inserted in the limiting rod groove 5, the other end of the limiting rod 6 is movably inserted in the limiting rod hole 7, the limiting rod hole 7 is arranged on the surface of the nut 2, the limiting rod groove 5 is a cylindrical groove body structure, the limiting rod 6 is a circular rod body structure, the diameter of the limiting rod 6 is the same as the diameter of the limiting rod groove 5, two groups of limiting rod grooves 5 are arranged, and the two groups of limiting rod grooves 5 are symmetrically distributed about the lining plate 4.

[0021] In actual use, the gasket 3 is pasted on a lining plate 4 of the same shape as the gasket 3. The lining plate 4 is made of metal material. When one end of the limiting rod 6 stays in the limiting rod hole 7 opened on the surface of the nut 2, and the other end of the limiting rod 6 is inserted into the limiting rod groove 5 opened on the surface of the lining plate 4, the lining plate 4 and the gasket 3 are both limited in the nut 2. At this time, even if the hydraulic hose is disassembled from the hydraulic pipe joint 1, the gasket 3 will not fall off the nut 2; when the gasket 3 needs to be replaced, the limiting rod 6 is moved away from the lining plate 4. Movement, so that the limiting rod 6 withdraws from the limiting rod groove 5. At this time, the limiting of the lining plate 4 is released, and the old gasket 3 and the lining plate 4 can be taken out from the nut 2 together, and the lining plate 4 with the new gasket 3 is placed in the nut 2, and the limiting rod groove 5 and the limiting rod hole 7 on the surface of the new lining plate 4 are aligned. After alignment, one end of the limiting rod 6 can be automatically inserted into the limiting rod groove 5, and the other end of the limiting rod 6 still stays in the limiting rod hole 7, so that the new gasket 3 and the lining plate 4 are limited in the nut 2, and the replacement of the nut 2 is completed conveniently.

[0022] Embodiment 2

[0023] On the basis of embodiment one, in order to realize that the limiting rod 6 is automatically inserted into the limiting rod groove 5 after the limiting rod groove 5 and the limiting rod hole 7 are aligned, a sleeve 8 is fixed at the position where the limiting rod hole 7 is opened on the outer wall surface of the nut 2, and a spring plate 9 is slidably connected in the sleeve 8, one end of the spring plate 9 is fixed on the surface of the limiting rod 6, and the other end of the spring plate 9 is fixed with a spring 11, and the other end of the spring 11 is fixed on the inner wall of the sleeve 8.

[0024] When the limit rod 6 moves in the direction away from the lining plate 4, the spring plate 9 also moves in the same direction with the limit rod 6. The movement of the spring plate 9 causes the spring 11 to be compressed by the inner wall of the sleeve 8 and the spring plate 9. Therefore, when the limit rod groove 5 is aligned with the limit rod hole 7, the spring 11 pushes the spring plate 9 in the direction close to the lining plate 4 under the action of its own elasticity, and the spring plate 9 pushes the limit rod 6 in the same direction, thereby pushing one end of the limit rod 6 into the limit rod groove 5.

[0025] Embodiment 3

[0026] On the basis of the second embodiment, in order to facilitate the control of the limit rod 6, a pull rod hole 12 is opened at the end of the sleeve 8 away from the nut 2, and one end of the pull rod 10 is movably inserted in the pull rod hole 12. The other end of the pull rod 10 is fixed on the surface of the spring plate 9, and a handle 13 is fixed at the end of the pull rod 10 away from the spring plate 9.

[0027] When the limiting rod 6 needs to be withdrawn from the limiting rod groove 5, it is only necessary to pull the handle 13 in the direction away from the nut 2. The movement of the handle 13 drives one end of the pull rod 10 to extend out of the sleeve 8 from the pull rod hole 12, and the other end of the pull rod 10 drives the spring plate 9 to move in the same direction. The movement of the spring plate 9 compresses the spring 11 on the one hand, and drives the limiting rod 6 to withdraw from the limiting rod groove 5 on the other hand; when the limiting rod 6 needs to be reinserted into the limiting rod groove 5, it is only necessary to loosen the handle 13 after the lining plate 4 is placed in the nut 2, and then rotate the lining plate 4 to align the limiting rod groove 5 with the limiting rod hole 7, and the limiting rod 6 can be pushed into the limiting rod groove 5 under the elastic action of the spring 11.

[0028] In actual use, the gasket 3 is pasted on a lining plate 4 of the same shape as the gasket 3. The lining plate 4 is made of metal material. When one end of the limiting rod 6 stays in the limiting rod hole 7 opened on the surface of the nut 2, and the other end of the limiting rod 6 is inserted into the limiting rod groove 5 opened on the surface of the lining plate 4, the lining plate 4 and the gasket 3 are both limited in the nut 2. At this time, even if the hydraulic hose is disassembled from the hydraulic pipe joint 1, the gasket 3 will not fall off the nut 2; when the gasket 3 needs to be replaced, the limiting rod 6 is moved in the direction away from the lining plate 4. The limiting rod 6 is withdrawn from the limiting rod groove 5, and the limiting of the lining plate 4 is released at this time, so that the old gasket 3 and the lining plate 4 can be taken out from the nut 2 together, and the lining plate 4 equipped with the new gasket 3 is put into the nut 2, and the limiting rod groove 5 and the limiting rod hole 7 on the surface of the new lining plate 4 are aligned. After alignment, one end of the limiting rod 6 can be automatically inserted into the limiting rod groove 5, and the other end of the limiting rod 6 still stays in the limiting rod hole 7, so that the new gasket 3 and the lining plate 4 are limited in the nut 2, and the replacement of the nut 2 is completed conveniently; when the limiting rod 6 is moved away from the limiting rod groove 5, the new gasket 3 and the lining plate 4 are limited in the nut 2. When the lining plate 4 moves in the same direction, the spring plate 9 also moves in the same direction with the limiting rod 6. The movement of the spring plate 9 causes the spring 11 to be compressed by the inner wall of the sleeve 8 and the spring plate 9. Therefore, when the limiting rod groove 5 is aligned with the limiting rod hole 7, the spring 11 pushes the spring plate 9 in the direction close to the lining plate 4 under its own elastic action, and the spring plate 9 pushes the limiting rod 6 in the same direction, so that one end of the limiting rod 6 can be pushed into the limiting rod groove 5. When the limiting rod 6 needs to be withdrawn from the limiting rod groove 5, it is only necessary to pull the handle 13 in the direction away from the nut 2. The handle The movement of 13 drives one end of the pull rod 10 to extend out of the sleeve 8 from the pull rod hole 12, and the other end of the pull rod 10 drives the spring plate 9 to move in the same direction. The movement of the spring plate 9 compresses the spring 11 on the one hand, and drives the limit rod 6 to withdraw from the limit rod groove 5 on the other hand; when the limit rod 6 needs to be reinserted into the limit rod groove 5, it is only necessary to loosen the handle 13 after the lining plate 4 is placed in the nut 2, and then rotate the lining plate 4 to align the limit rod groove 5 with the limit rod hole 7, and the limit rod 6 can be pushed into the limit rod groove 5 under the elastic action of the spring 11.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure, comprising: A hydraulic pipe joint (1), wherein nuts (2) are arranged at both ends of the hydraulic pipe joint (1), and a gasket (3) is arranged in the nut (2), characterized in that a lining plate (4) is fixed to one end of the gasket (3), a limiting rod groove (5) is provided on the surface of the lining plate (4), one end of a limiting rod (6) is movably inserted in the limiting rod groove (5), the other end of the limiting rod (6) is movably inserted in a limiting rod hole (7), and the limiting rod hole (7) is provided on the surface of the nut (2).

2. A sealing structure according to claim 1, characterized in that: The limiting rod groove (5) is a cylindrical groove structure, the limiting rod (6) is a circular rod structure, and the diameter of the limiting rod (6) is the same as the diameter of the limiting rod groove (5).

3. A sealing structure according to claim 1, characterized in that: The limiting rod grooves (5) are provided in two groups, and the two groups of limiting rod grooves (5) are symmetrically distributed with respect to the lining plate (4).

4. A sealing structure according to claim 1, characterized in that: A sleeve (8) is fixed at a position where a limit rod hole (7) is provided on the outer wall surface of the nut (2), a spring plate (9) is slidably connected in the sleeve (8), one end of the spring plate (9) is fixed on the surface of the limit rod (6), a spring (11) is fixed on the other end of the spring plate (9), and the other end of the spring (11) is fixed on the inner wall of the sleeve (8).

5. A sealing structure according to claim 4, characterized in that: A pull rod hole (12) is formed at one end of the sleeve (8) away from the nut (2), one end of the pull rod (10) is movably inserted into the pull rod hole (12), the other end of the pull rod (10) is fixed on the surface of the spring plate (9), and a handle (13) is fixed at one end of the pull rod (10) away from the spring plate (9).

6. A hydraulic pipe joint for connecting a hydraulic hose, characterized in that: The invention comprises the sealing structure as described in any one of claims 1 to 5.

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