Hydraulic pipe joint locking mechanism convenient to assemble and disassemble

Abstract

The utility model relates to the technical field of hydraulic pipe joint locking mechanisms, in particular to a hydraulic pipe joint locking mechanism convenient to assemble and disassemble, which comprises a hydraulic pipe joint, a nut and a hydraulic pipe, the nut is fixedly sleeved on the surface of the hydraulic pipe joint, the hydraulic pipe is movably inserted in the nut, and the nut is in threaded connection with the hydraulic pipe. A locking groove is formed in the surface of the hydraulic pipe, one end of a locking rod is movably inserted into the locking groove, and the other end of the locking rod is movably inserted into the locking rod mounting hole; the hydraulic pipe joint has the advantages that when one end of the locking rod stays in the locking rod mounting hole formed in the surface of the nut and the other end of the locking rod is inserted into the locking groove formed in the surface of the hydraulic pipe, threaded connection between the nut and the hydraulic pipe can be locked, and when the hydraulic pipe joint needs to be disassembled, locking can be released only by retreating the locking rod from the locking groove, so that the hydraulic pipe joint is convenient to disassemble. Therefore, the threaded connection of the nut and the hydraulic pipe is locked, and meanwhile, the hydraulic pipe joint is very convenient to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic pipe joint locking mechanisms, in particular to a hydraulic pipe joint locking mechanism which is easy to install and disassemble. Background Art

[0002] Hydraulic pipe joints are important components for connecting pipelines in hydraulic systems. They can withstand the impact of high-pressure hydraulic oil and need to have good sealing performance to prevent oil leakage. The sealing performance of existing hydraulic pipe joints is usually achieved by setting nuts at both ends of the hydraulic pipe joints, the nuts are provided with internal threads, and external threads are provided at the ends of the hydraulic pipes. The ends of the hydraulic pipes are inserted into the hydraulic pipe joints and the threads are tightened, so that the ends of the hydraulic pipes are pressed against the sealing gaskets provided in the nuts of the hydraulic pipe joints. The gaps between the hydraulic pipe joints and the ends of the hydraulic pipes are blocked by the sealing gaskets, thereby achieving good sealing performance. This makes the sealing performance of the hydraulic pipe joints depend on the threaded connection between the nuts at the ends of the hydraulic pipe joints and the hydraulic pipes. During long-term use, the threaded connection will inevitably loosen due to factors such as uneven force and temperature changes, thereby destroying the sealing performance of the hydraulic pipe joints. In order to avoid this situation, locking measures need to be designed for the hydraulic pipe joints to lock the threaded connection to prevent it from loosening.

[0003] In the prior art, usually after tightening the threaded connection between the nut of the hydraulic pipe joint and the hydraulic pipe, sealant is poured into the gap of the threaded connection to allow the sealant to penetrate between the threads. After the sealant is dried, the nut of the hydraulic pipe joint and the end of the hydraulic pipe can be glued together to prevent the thread from loosening and achieve the purpose of locking.

[0004] However, the locking measures in the prior art require that the portion filled with sealant be immersed in a sol for a long time when the hydraulic pipe joint needs to be reinstalled, and the hydraulic pipe joint can only be reinstalled after the sealant is dissolved, which makes the installation and removal of the hydraulic pipe joint very inconvenient. Utility Model Content

[0005] The utility model aims to provide a hydraulic pipe joint locking mechanism which is easy to install and disassemble, 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 locking mechanism for a hydraulic pipe joint that is easy to install and disassemble, comprising: a hydraulic pipe joint, a nut and a hydraulic pipe, the nut is fixedly sleeved on the surface of the hydraulic pipe joint, the hydraulic pipe is movably inserted in the nut, a threaded connection is provided between the nut and the hydraulic pipe, a locking groove is provided on the surface of the hydraulic pipe, one end of a locking rod is movably inserted in the locking groove, the other end of the locking rod is movably inserted in a locking rod mounting hole, and the locking rod mounting hole is provided on the surface of the nut.

[0007] Preferably, the locking groove is in the form of an annular groove body, and the locking groove is provided around the side wall of the hydraulic pipe.

[0008] Preferably, the locking rod mounting hole is a circular hole, and an opening is provided on the outer surface of the nut. A sleeve is fixed at the position on the outer surface of the nut where the nut is opened, and a spring plate is slidably connected in the sleeve. One end of the spring plate is fixed to the end of the locking rod away from the locking groove, and a spring is fixed to the other end of the spring plate, and the other end of the spring is fixed to the inner wall of the sleeve.

[0009] Preferably, a pull rod hole is provided on the surface of one end of the sleeve away from the nut, and the pull rod hole is a circular hole. A pull rod is movably inserted in the pull rod hole, one end of the pull rod is inserted into the sleeve through the pull rod hole, the end of the pull rod inserted into the sleeve is fixed on the surface of the spring plate, the other end of the pull rod extends out of the spring plate, and a pull ring is provided at the end of the pull rod extending out of the spring plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model provides a locking mechanism for a hydraulic pipe joint that is easy to install and disassemble. When one end of a locking rod stays in a locking rod installation hole provided on the surface of a nut and the other end is inserted into a locking groove provided on the surface of a hydraulic pipe, the threaded connection between the nut and the hydraulic pipe can be locked. When the hydraulic pipe joint is to be disassembled, the locking rod can be released by simply withdrawing the locking rod from the locking groove. Thus, the threaded connection between the nut and the hydraulic pipe is locked and the installation and disassembly of the hydraulic pipe joint is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0015] In the figure: hydraulic pipe joint 1, nut 2, hydraulic pipe 3, locking groove 4, locking rod 5, locking rod mounting hole 6, sleeve 7, spring plate 8, pull rod 9, spring 10, pull rod hole 11, pull ring 12. DETAILED DESCRIPTION

[0016] 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.

[0017] Embodiment 1

[0018] See also Figure 1-Figure 3 The utility model provides a technical solution: a locking mechanism for a hydraulic pipe joint that is easy to install and disassemble, comprising: a hydraulic pipe joint 1, a nut 2 and a hydraulic pipe 3, the nut 2 is fixedly sleeved on the surface of the hydraulic pipe joint 1, the hydraulic pipe 3 is movably inserted in the nut 2, a threaded connection is provided between the nut 2 and the hydraulic pipe 3, a locking groove 4 is provided on the surface of the hydraulic pipe 3, one end of a locking rod 5 is movably inserted in the locking groove 4, the other end of the locking rod 5 is movably inserted in a locking rod mounting hole 6, and the locking rod mounting hole 6 is provided on the surface of the nut 2.

[0019] In actual use, when installing the hydraulic pipe joint 1 and the hydraulic pipe 3, first make the end of the locking rod 5 extending into the nut 2 completely retract into the locking rod mounting hole 6, and then tighten the nut 2 and the hydraulic pipe 3 through threaded connection. After tightening, fine-tune the hydraulic pipe 3 to align the locking groove 4 with the locking rod mounting hole 6. After alignment, one end of the locking rod 5 is automatically inserted into the locking groove 4. When the hydraulic pipe 3 tends to loosen, the hydraulic pipe 3 will move outward. At this time, the locking rod 5 is against the groove wall of the locking groove 4 to hinder the movement of the hydraulic pipe 3, so that the hydraulic pipe 3 cannot be loosened, thereby realizing the locking function of the threaded connection between the nut 2 and the hydraulic pipe 3. When the hydraulic pipe joint 1 and the hydraulic pipe 3 need to be disassembled, only the locking rod 5 needs to be re-engaged. When the end of the locking rod 5 extending into the inner side of the nut 2 is completely retracted into the locking rod mounting hole 6, the locking rod 5 can be withdrawn from the locking groove 4, the locking function is released, and the hydraulic pipe joint 1 and the hydraulic pipe 3 can be removed by loosening the hydraulic pipe 3; when one end of the locking rod 5 stays in the locking rod mounting hole 6 opened on the surface of the nut 2 and the other end is inserted into the locking groove 4 opened on the surface of the hydraulic pipe 3, the threaded connection between the nut 2 and the hydraulic pipe 3 can be locked. When the hydraulic pipe joint 1 is to be removed, the locking rod 5 can be released by withdrawing the locking rod 5 from the locking groove 4, thereby realizing the locking of the threaded connection between the nut 2 and the hydraulic pipe 3, and making the installation and removal of the hydraulic pipe joint 1 very convenient.

[0020] Embodiment 2

[0021] On the basis of the first embodiment, in order to facilitate the alignment of the locking groove 4 and the locking rod mounting hole 6 , the locking groove 4 is an annular groove body, and the locking groove 4 is opened around the side wall of the hydraulic pipe 3 .

[0022] The locking groove 4 is opened around the side wall of the hydraulic pipe 3, so that the alignment between the locking groove 4 and the locking rod mounting hole 6 does not need to take into account the circumferential position. The locking groove 4 and the locking rod mounting hole 6 can be easily aligned by simply aligning the locking groove 4 and the locking rod mounting hole 6 axially.

[0023] Embodiment 3

[0024] On the basis of Example 2, in order to realize the automatic insertion of the locking rod 5 into the locking groove 4 after the locking groove 4 and the locking rod mounting hole 6 are aligned, the locking rod mounting hole 6 is a circular hole, and the locking rod mounting hole 6 is provided with an opening on the outer surface of the nut 2. A sleeve 7 is fixed at the position where the nut 2 is opened on the outer surface of the nut 2, and a spring plate 8 is slidably connected in the sleeve 7. One end of the spring plate 8 is fixed to the end of the locking rod 5 away from the locking groove 4, and the other end of the spring plate 8 is fixed to a spring 10, and the other end of the spring 10 is fixed to the inner wall of the sleeve 7.

[0025] When one end of the locking rod 5 extending into the nut 2 is completely retracted into the locking rod mounting hole 6, the locking rod 5 moves in the direction away from the axis of the nut 2. The movement of the locking rod 5 causes the spring plate 8 to move in the same direction. The movement of the spring plate 8 causes the spring 10 to be compressed by the inner wall of the sleeve 7 and the spring plate 8. After the locking groove 4 and the locking rod mounting hole 6 are aligned, the locking rod 5 is stopped from being manipulated. The compressed spring 10 generates a thrust on the spring plate 8 under the action of its own elasticity, and the spring plate 8 further generates a thrust on the locking rod 5, so that the locking rod 5 is automatically pushed into the locking groove 4 under the thrust of the spring plate 8.

[0026] Embodiment 4

[0027] On the basis of embodiment three, in order to realize convenient operation of the locking rod 5, a pull rod hole 11 is opened on the surface of the end of the sleeve 7 away from the nut 2. The pull rod hole 11 is a circular hole. A pull rod 9 is movably inserted in the pull rod hole 11. One end of the pull rod 9 is inserted into the sleeve 7 through the pull rod hole 11. The end of the pull rod 9 inserted into the sleeve 7 is fixed on the surface of the spring plate 8, and the other end of the pull rod 9 extends out of the spring plate 8. A pull ring 12 is provided on the end of the pull rod 9 extending out of the spring plate 8.

[0028] When it is necessary to operate the end of the locking rod 5 extending into the nut 2 to be completely retracted into the locking rod mounting hole 6, it is only necessary to pull the pull ring 12 in the direction away from the nut 2, so that the end of the pull rod 9 extending out of the spring plate 8 extends a longer distance from the pull rod hole 11. The movement of the pull rod 9 drives the spring plate 8 to move in the same direction, and the spring plate 8 pulls the end of the locking rod 5 extending into the nut 2 completely into the locking rod mounting hole 6; when it is necessary to insert the locking rod 5 into the locking groove 4, it is only necessary to loosen the pull ring 12 when the locking groove 4 and the locking rod mounting hole 6 are aligned, so that one end of the locking rod 5 can be pushed into the locking groove 4 under the elastic force of the spring 10.

[0029] In actual use, when installing the hydraulic pipe joint 1 and the hydraulic pipe 3, first make the end of the locking rod 5 extending into the nut 2 completely retract into the locking rod mounting hole 6, and then tighten the nut 2 and the hydraulic pipe 3 through threaded connection. After tightening, fine-tune the hydraulic pipe 3 to align the locking groove 4 with the locking rod mounting hole 6. After alignment, one end of the locking rod 5 is automatically inserted into the locking groove 4. When the hydraulic pipe 3 tends to loosen, the hydraulic pipe 3 will move outward. At this time, the locking rod 5 is against the groove wall of the locking groove 4 to hinder the movement of the hydraulic pipe 3, so that the hydraulic pipe 3 cannot be loosened, thereby realizing the locking function of the threaded connection between the nut 2 and the hydraulic pipe 3. When the hydraulic pipe joint 1 and the hydraulic pipe 3 need to be disassembled, it is only necessary to re-tighten the locking rod 5. When the end extending into the inner side of the nut 2 is completely retracted into the locking rod mounting hole 6, the locking rod 5 can be withdrawn from the locking groove 4, the locking function is released, and the hydraulic pipe joint 1 and the hydraulic pipe 3 can be removed by loosening the hydraulic pipe 3. The locking mechanism of the hydraulic pipe joint that is easy to install and remove can lock the threaded connection between the nut 2 and the hydraulic pipe 3 when one end of the locking rod 5 stays in the locking rod mounting hole 6 opened on the surface of the nut 2 and the other end is inserted into the locking groove 4 opened on the surface of the hydraulic pipe 3. When the hydraulic pipe joint 1 is to be removed, the locking rod 5 can be released by withdrawing the locking rod 5 from the locking groove 4, thereby realizing the locking of the threaded connection between the nut 2 and the hydraulic pipe 3, making the installation and removal of the hydraulic pipe joint 1 very convenient. The groove 4 is opened around the side wall of the hydraulic pipe 3, so the alignment between the locking groove 4 and the locking rod mounting hole 6 does not need to take into account the circumferential position. The locking groove 4 and the locking rod mounting hole 6 can be easily aligned by only axially aligning the locking groove 4 and the locking rod mounting hole 6; when the end of the locking rod 5 extending into the nut 2 is completely retracted into the locking rod mounting hole 6, the locking rod 5 moves in a direction away from the axis of the nut 2, and the movement of the locking rod 5 causes the spring plate 8 to move in the same direction. The movement of the spring plate 8 causes the spring 10 to be compressed by the inner wall of the sleeve 7 and the spring plate 8. After the locking groove 4 and the locking rod mounting hole 6 are aligned, the locking rod 5 is stopped from being manipulated, and the compressed spring 10 generates a thrust on the spring plate 8 under the action of its own elasticity, and the spring plate 8 then A thrust is generated on the locking rod 5, so that the locking rod 5 is automatically pushed into the locking groove 4 under the thrust of the spring plate 8; when it is necessary to manipulate the end of the locking rod 5 extending into the nut 2 to be completely retracted into the locking rod mounting hole 6, it is only necessary to pull the pull ring 12 in the direction away from the nut 2, so that the end of the pull rod 9 extending out of the spring plate 8 extends a longer distance from the pull rod hole 11, and the movement of the pull rod 9 drives the spring plate 8 to move in the same direction, and the spring plate 8 pulls the end of the locking rod 5 extending into the nut 2 completely into the locking rod mounting hole 6; when it is necessary to insert the locking rod 5 into the locking groove 4, it is only necessary to loosen the pull ring 12 when the locking groove 4 and the locking rod mounting hole 6 are aligned, so that one end of the locking rod 5 can be pushed into the locking groove 4 under the elastic force of the spring 10.

[0030] 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 locking mechanism for a hydraulic pipe joint that is easy to install and disassemble, comprising: A hydraulic pipe joint (1), a nut (2) and a hydraulic pipe (3), wherein the nut (2) is fixedly sleeved on the surface of the hydraulic pipe joint (1), the hydraulic pipe (3) is movably inserted in the nut (2), and a threaded connection is provided between the nut (2) and the hydraulic pipe (3), characterized in that a locking groove (4) is provided on the surface of the hydraulic pipe (3), one end of a locking rod (5) is movably inserted in the locking groove (4), the other end of the locking rod (5) is movably inserted in a locking rod mounting hole (6), and the locking rod mounting hole (6) is provided on the surface of the nut (2).

2. A locking mechanism for a hydraulic pipe joint that is easy to install and disassemble according to claim 1, characterized in that: The locking groove (4) is in the form of an annular groove body, and the locking groove (4) is formed around the side wall of the hydraulic pipe (3).

3. A locking mechanism for a hydraulic pipe joint that is easy to install and disassemble according to claim 1, characterized in that: The locking rod mounting hole (6) is a circular hole. The locking rod mounting hole (6) is provided with an opening on the outer surface of the nut (2). A sleeve (7) is fixed at a position on the outer surface of the nut (2) where the nut (2) is opened. A spring plate (8) is slidably connected in the sleeve (7). One end of the spring plate (8) is fixed to an end of the locking rod (5) away from the locking groove (4). A spring (10) is fixed to the other end of the spring plate (8). The other end of the spring (10) is fixed to the inner wall of the sleeve (7).

4. A locking mechanism for a hydraulic pipe joint that is easy to install and disassemble according to claim 3, characterized in that: A pull rod hole (11) is provided on the surface of one end of the sleeve (7) away from the nut (2); the pull rod hole (11) is a circular hole; a pull rod (9) is movably inserted into the pull rod hole (11); one end of the pull rod (9) is inserted into the sleeve (7) through the pull rod hole (11); the end of the pull rod (9) inserted into the sleeve (7) is fixed on the surface of the spring plate (8); the other end of the pull rod (9) extends out of the spring plate (8); and a pull ring (12) is provided at the end of the pull rod (9) extending out of the spring plate (8).

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