Morgan tubing quick release coupling

Abstract

The utility model provides a Morgan oil pipe anti -loose quick -operation joint relates to Morgan oil pipe joint technical field, mainly through the male joint of first joint's lug and the joint circumferential limiting portion of second joint insert fit cooperation, the relative circumferential rotation of male and female joint is limited from the source, avoids the mutual separation of two adapter because of rotation, the clamping portion of the sleeve and the connecting portion of first joint cooperation, realized the reliable pressure of first, second joint cooperation end face, guarantee seal, locking assembly passes through the clamping of convex tooth and the circumferential limiting portion of sleeve, directly limits the circumferential rotation of sleeve, completely replaces the single locking mode of existing dependence spring force, effectively resists the continuous vibration of rolling mill frame, prevents the joint from separating because of vibration acceleration. The overall structure design gives consideration to the connection reliability and the operation convenience, solves the core problem of easy to come off, leakage of existing joint, adapts the quick dismounting demand of daily maintenance again, significantly reduces the equipment downtime risk and maintenance intensity.

Description

Technical Field

[0001] This utility model relates to the field of Morgan tubing fitting technology, and in particular to a Morgan tubing anti-loosening quick coupling. Background Technology

[0002] In the continuous casting and rolling process of thin slabs, Morgan bearings, as core transmission components of the rolling mill, directly determine production efficiency and product quality through the stable operation of their lubrication and cooling systems. Morgan bearing hoses commonly employ quick-connect couplings to meet the needs of rapid disassembly and assembly during routine equipment maintenance and repair. These couplings have become critical connecting components in the hydraulic and lubrication systems of the rolling mill.

[0003] However, existing Morgan tubing quick-connect fittings have numerous structural defects in their locking mechanisms, leading to frequent loosening and leakage problems in practical applications. Current locking methods mostly involve tightening the ferrule and then folding the handle to achieve locking, but this folded state is maintained solely by spring force. This spring-loaded locking structure presents significant safety hazards: firstly, accidental external force or impact can cause the handle to unlock, leading to connector loosening; secondly, the handle uses a cam-spring combination structure, and the cam is prone to wear after prolonged use, directly causing the locking function to fail. Furthermore, the handle installation position lacks directional limiting design; when the handle is not in a directly overhead position (especially directly below), it is prone to opening naturally due to its own weight, further increasing the risk of locking failure.

[0004] Therefore, it is necessary to propose a Morgan tubing anti-loosening quick coupling to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main purpose of this utility model is to provide a Morgan oil pipe anti-loosening quick coupling to solve the problem that Morgan oil pipe quick couplings in the prior art are easily loosened by external forces, leading to oil leakage.

[0006] To achieve the above objectives, this utility model provides a Morgan tubing anti-loosening quick coupling, including a first connector, a second connector, a ferrule, and a locking assembly; wherein, The first connector is used for threaded connection to the Morgan bearing housing end, and the second connector is used for threaded connection to the hose end. The first connector is inserted into the second connector. A protrusion is formed at the end of the first connector, and a circumferential limiting portion is formed at the end of the second connector. The protrusion is inserted into the circumferential limiting portion to restrict the circumferential rotation of the first connector and the second connector. The sleeve is fitted onto the second connector, and the sleeve has a retaining part. The outer side wall of the first connector has a connecting part that mates with the retaining part. The retaining part is connected to the connecting part by snapping to press the mating end faces between the first connector and the second connector. The outer wall of the second connector also forms a circumferential limiting part of the ferrule. The ferrule has a radial through hole. One end of the locking component is hinged to the ferrule and disposed at the radial through hole. The inner side of the hinge end of the locking component has a protruding tooth. The free end of the locking component is oscillatingly disposed around its hinge end to drive the protruding tooth through the radial through hole and engage in the circumferential limiting part of the ferrule to restrict the circumferential rotation of the ferrule.

[0007] Preferably, the circumferential limiting portion of the connector includes a plurality of slots protruding vertically at the end of the second connector, and the protrusions are inserted into the slots to restrict the circumferential rotation of the first connector and the second connector.

[0008] Preferably, the circumferential limiting portion of the ferrule includes a plurality of toothed grooves spaced circumferentially along the outer side wall of the second connector, and the protruding teeth are engaged in the toothed grooves to restrict the circumferential rotation of the ferrule.

[0009] Preferably, the holding part includes a claw protruding from the outside of the sleeve, and the connecting part includes a slide protruding from the outside of the first connector. The slide extends circumferentially along the first connector and is inclined in the height direction. The claw is used to lock onto the slide. The claw presses the mating end faces between the first connector and the second connector by rotating with the sleeve and rotating along the slide.

[0010] Preferably, the locking assembly includes a hinge seat and a handle. The hinge seat is connected to the sleeve and disposed at the radial through hole. The handle is hinged to the hinge seat by a pin, and the inner side of the handle has a protruding tooth.

[0011] Preferably, the locking assembly further includes a retaining ring, a spring, a bolt, and a pull ring. One end of the handle has a through hole extending along its length. The hinge seat has a pin hole corresponding to the through hole. The bolt passes through the through hole and is used to abut against the pin hole and is slidably disposed therein. The handle has a pressure plate. The retaining ring is sleeved on the bolt and abuts against the through hole of the handle. The spring is sleeved on the bolt and connected between the retaining ring and the pressure plate. The pull ring is connected to the end of the bolt away from the hinge seat.

[0012] Preferably, it further includes a sealing ring, and a boss is formed by protruding inward on the inner side of the end of the second connector, and the sealing ring abuts between the end of the first connector and the boss of the second connector.

[0013] Preferably, one of the jaws and one of the slides constitute a set of clamping groups, and there are two clamping groups, which are distributed radially opposite to each other along the sleeve.

[0014] Preferably, the insertion end of the pull bolt and the end of the pin hole are both rounded.

[0015] Preferably, the opposite ends of the first connector and the second connector are respectively formed with finger grooves arranged along their own circumference.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a Morgan hose anti-loosening quick coupling, including a first coupling, a second coupling, a ferrule, and a locking assembly. The first coupling is threaded onto the Morgan bearing seat end, and the second coupling is threaded onto the hose end. The first coupling is inserted into the second coupling. A protrusion is formed at the end of the first coupling, and a circumferential limiting portion is formed at the end of the second coupling. The protrusion, by inserting into the circumferential limiting portion, restricts the circumferential rotation of the first and second couplings. The ferrule is fitted onto the second coupling and has a retaining portion. The outer side wall of the first connector has a connecting part that mates with the holding part. The holding part is connected to the connecting part to press the mating end face between the first connector and the second connector. The outer side wall of the second connector also has a circumferential limiting part for the sleeve. The sleeve has a radial through hole. One end of the locking component is hinged to the sleeve and located at the radial through hole. The inner side of the hinge end of the locking component has a protruding tooth. The free end of the locking component is oscillating around its hinge end to drive the protruding tooth through the radial through hole and lock it in the circumferential limiting part of the sleeve to restrict the circumferential rotation of the sleeve. By interlocking the protrusion of the first connector with the circumferential limiting part of the second connector, the relative circumferential rotation of the male and female connectors is restricted from the source, preventing the two adapters from disengaging due to rotation. The retaining part of the ferrule engages with the connecting part of the first connector, achieving reliable clamping of the mating end faces of the first and second connectors and ensuring a seal. The locking component, through the engagement of the teeth with the circumferential limiting part of the ferrule, directly restricts the circumferential rotation of the ferrule, completely replacing the existing single locking method that relies on spring force. This effectively resists the continuous vibration of the rolling mill stand and prevents the connector from separating due to vibration. The overall structural design takes into account both connection reliability and ease of operation, solving the core problems of easy loosening and leakage in existing connectors, while also adapting to the quick disassembly and assembly requirements of daily maintenance, significantly reducing equipment downtime risk and maintenance intensity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention, illustrating an application scenario. Figure 2 This is a perspective view of the locking assembly of the overall structure in one embodiment of the present invention when it is open; Figure 3 This is a cross-sectional view of the locking assembly of the overall structure in one embodiment of the present invention. Figure 4 This is an exploded view of the overall structure in one embodiment of the present invention; Figure 5 This is a cross-sectional schematic diagram of the locking assembly of the overall structure in one embodiment of the present invention when closed.

[0019] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] Explanation of icon numbers: 10. First connector; 110. Protrusion; 120. Slide table; 130. Finger groove; 20. Second connector; 210. Slot; 220. Tooth groove; 230. Sealing ring; 240. Protrusion; 30. Sleeve; 310. Claw; 320. Radial through hole; 40. Locking assembly; 410. Hinge seat; 420. Handle; 421. Protruding tooth; 422. Pressure table; 430. Snap ring; 440. Spring; 450. Pull bolt; 460. Pull ring; 50. Morgan bearing seat end; 60. Hose end. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] Please see the appendix Figure 1-5 The present invention provides a Morgan tubing anti-loosening quick coupling in one embodiment, comprising a first connector 10, a second connector 20, a ferrule 30, and a locking assembly 40, the specific details of which are as follows: The first connector 10 is threaded onto the Morgan bearing housing end 50, and the second connector 20 is threaded onto the hose end 60. The first connector 10 is inserted into the second connector 20. A protrusion 110 is formed at the end of the first connector 10, and a circumferential limiting portion (not shown) is formed at the end of the second connector 20. The protrusion 110 restricts the circumferential rotation of the first connector 10 and the second connector 20 by inserting into the circumferential limiting portion. A retaining sleeve 30 is fitted onto the second connector 20, and the retaining sleeve 30 has a retaining portion (not shown). A connecting portion that mates with the retaining portion is formed on the outer side wall of the first connector 10. (Not shown in the figure) The holding part is connected to the connecting part by a snap-fit ​​to press the mating end faces between the first connector 10 and the second connector 20; the outer side wall of the second connector 20 also forms a circumferential limiting part of the sleeve (not shown in the figure). The sleeve 30 is provided with a radial through hole 320. One end of the locking component 40 is hinged to the sleeve 30 and disposed at the radial through hole 320. The inner side of the hinge end of the locking component 40 is provided with a protruding tooth 421. The free end of the locking component 40 is oscillatingly disposed around its hinge end to drive the protruding tooth 421 through the radial through hole 320 and snap into the circumferential limiting part of the sleeve to restrict the circumferential rotation of the sleeve 30.

[0026] Specifically, the Morgan hose anti-loosening quick coupling includes a first connector 10, a second connector 20, a retaining sleeve 30, and a locking assembly 40. The first connector 10 is used to connect to the Morgan bearing seat end 50, and the second connector 20 is used to connect to the hose. The protrusion 110 of the first connector 10 and the circumferential limiting part of the second connector 20 are inserted into each other, restricting the relative circumferential rotation of the male and female connectors from the source and preventing the two connectors from disengaging due to rotation. The retaining sleeve 30 is used to cooperate with the first connector 10 to increase the end face connection. The sealing is mainly achieved by the engagement of the retaining part of the ferrule 30 with the connecting part of the first connector 10, which achieves a reliable connection between the mating end faces of the first and second connectors through a snap-fit ​​and pressing method, further ensuring the seal. The locking component 40 is used to restrict the circumferential rotation of the ferrule 30. It directly restricts the circumferential rotation of the ferrule 30 through the engagement of the convex tooth 421 with the circumferential limiting part of the ferrule, completely replacing the existing single locking method that relies on the force of the spring 440, effectively resisting the continuous vibration of the rolling mill stand and preventing the joint from separating due to vibration.

[0027] In a preferred embodiment of the present invention, the circumferential limiting part of the connector includes a plurality of slots 210 protruding vertically at the end of the second connector 20, and the protrusion 110 restricts the circumferential rotation of the first connector 10 and the second connector 20 by inserting into the slots 210.

[0028] It should be noted that multiple slots 210 are distributed along the end of the second connector 20, so that the protrusion 110 of the first connector 10 does not need to be precisely aligned with a single limiting position during installation. It can be flexibly inserted into the corresponding slot 210 according to the actual assembly angle, which greatly improves assembly efficiency. At the same time, the insertion and engagement of the slot 210 and the protrusion 110 is a surface contact limiting, which results in more uniform force distribution and can effectively prevent the circumferential movement of the first and second connectors under the vibration environment of the rolling mill, avoiding damage to the integrity of the sealing surface due to relative rotation. This structure has a simple processing technology, controllable cost, and direct and stable limiting effect, which further strengthens the connection foundation between the connectors and provides a stable premise for subsequent axial pressing and locking, reducing the risk of chain leakage caused by circumferential loosening. Preferably, the protrusion 110 of the first connector 10 is also set as multiple, which are arranged at intervals along its own circumference to increase the uniformity of circumferential limiting.

[0029] In a preferred embodiment of the present invention, the circumferential limiting part of the sleeve includes a plurality of toothed grooves 220 arranged at intervals along the circumference of the second connector 20 on the outer side wall of the second connector 20, and the protruding teeth 421 are engaged in the toothed grooves 220 to restrict the circumferential rotation of the sleeve 30.

[0030] It is important to note that the spacing design of multiple tooth grooves 220 expands the locking range of the protruding teeth 421. When the handle 420 swings, the protruding teeth 421 can quickly engage with the nearest tooth groove 220 without repeatedly adjusting the angle of the ferrule 30, simplifying the operation process and reducing the difficulty of operation for maintenance personnel. The engagement between the tooth grooves 220 and the protruding teeth 421 is a tooth surface contact, which provides strong locking force and excellent anti-pull-out ability. It can effectively resist the impact force brought by the mill vibration and prevent the protruding teeth 421 from disengaging from the tooth grooves 220, causing the ferrule 30 to rotate. Compared with the existing cam plus spring 440 structure, this tooth groove 220 engagement structure has less wear and a longer service life, and can maintain locking effectiveness for a long time. It fundamentally solves the failure problems such as cam wear and handle 420 self-weight unlocking, ensuring the long-term stable operation of the joint.

[0031] In a preferred embodiment of the present invention, the holding part includes a claw 310 protruding from the outside of the sleeve 30, and the connecting part includes a slide 120 protruding from the outside of the first connector 10. The slide 120 extends circumferentially along the first connector 10 and is inclined in the height direction. The claw 310 is used to lock onto the slide 120. The claw 310 presses the mating end face between the first connector 10 and the second connector 20 by rotating with the sleeve 30 and rotating along the slide 120.

[0032] It is worth noting that the slide table 120 extends circumferentially along the first joint 10 and is set at a high angle. When the ferrule 30 rotates, the jaws 310 slide along the inclined surface of the slide table 120. As the table surface rises, the axial clamping force between the jaws increases continuously, pushing the first joint 10 to gradually fit towards the second joint 20. This ensures that the sealing surface is subjected to uniform force and avoids leakage caused by local incomplete sealing. This clamping method can be completed by simply rotating the ferrule 30. The operation is simple and quick, and it is fully adapted to the quick disassembly and assembly needs of daily maintenance. At the same time, the clamped jaws 310 and the slide table 120 form a mechanical self-locking structure with strong axial stability. It can effectively resist the axial loosening force caused by the vibration of the rolling mill, solve the prominent problem of accelerated separation of existing joints due to vibration, and improve the connection reliability of the joint under harsh working conditions.

[0033] In a preferred embodiment of the present invention, the locking assembly 40 includes a hinge seat 410 and a handle 420. The hinge seat 410 is connected to the sleeve 30 and disposed at the radial through hole 320. The handle 420 is hinged to the hinge seat 410 by a pin, and the inner side of the handle 420 is provided with the protruding tooth 421.

[0034] It is worth noting that the hinge seat 410 is fixedly connected to the ferrule 30 to ensure the positional stability of the hinge point of the handle 420 and prevent the handle 420 from shaking or shifting due to vibration. The pin hinge structure has low rotational resistance and smooth operation, reducing the operating intensity of maintenance personnel, and is especially suitable for high-frequency maintenance scenarios. The inner side of the handle 420 directly protrudes the tooth 421, which simplifies the locking transmission structure and reduces the wear links of parts. Compared with the complex transmission of the existing cam plus spring 440, this structure has a lower failure rate and a longer service life. The direct cooperation between the tooth 421 and the circumferential limiting part of the ferrule results in a rapid locking response, avoiding locking delay or failure caused by transmission failure, and further improving locking reliability.

[0035] Furthermore, the locking assembly 40 also includes a retaining ring 430, a spring 440, a bolt 450, and a pull ring 460. One end of the handle 420 has a through hole extending along its own length. The hinge seat 410 has a pin hole corresponding to the through hole. The bolt 450 passes through the through hole and is used to abut against the pin hole and is slidably disposed therein. The handle 420 has a pressure plate 422. The retaining ring 430 is sleeved on the bolt 450 and abuts against the through hole of the handle 420. The spring 440 is sleeved on the bolt 450 and connected between the retaining ring 430 and the pressure plate 422. The pull ring 460 is connected to the end of the bolt 450 away from the hinge seat 410.

[0036] It should be noted that under the elastic preload of spring 440, the pull bolt 450 remains locked within the pin hole, forming a double locking mechanism of "handle 420 engagement + pull bolt 450 pin insertion." Even under external impact or strong vibration from the rolling mill, this ensures that the handle 420 will not swing accidentally, completely eliminating the risk of accidental locking. The pull ring 460, as the only unlocking component, requires active pulling by maintenance personnel to disengage the pull bolt 450 from the pin hole. The operation logic is clear, avoiding misoperation. The retaining ring 430's limiting function prevents the pull bolt 450 from dislodging from the through hole of the handle 420, ensuring the structural integrity of the component. In this structure, the pull bolt 450 only needs to be operated during unlocking and does not require frequent contact during daily use. Combined with the hidden storage design of the pull ring 460 (located in the internal groove of the entire handle 420), it further reduces the risk of accidental snagging, especially suitable for use with oil pipes in concealed locations such as below the horizon, reducing the huge losses caused by undetected leaks.

[0037] Furthermore, it also includes a sealing ring 230, and a boss 240 is formed on the inner side of the end of the second connector 20, and the sealing ring 230 abuts between the end of the first connector 10 and the boss 240 of the second connector 20.

[0038] It should be understood that the sealing ring 230 fills the tiny gap between the end of the first connector 10 and the boss 240 of the second connector 20, forming a flexible seal. Compared with a rigid seal, it has stronger sealing adaptability, can compensate for the sealing surface displacement caused by assembly errors or slight vibrations, significantly improves sealing reliability, and reduces hydraulic oil or lubricating oil leakage. The boss 240 of the second connector 20 provides stable support and positioning for the sealing ring 230, preventing the sealing ring 230 from shifting, deforming, or falling off during the clamping process, ensuring the long-term effectiveness of the seal. This sealing structure, in conjunction with the axial clamping of the clamping part, forms a dual guarantee of "mechanical clamping + flexible sealing", further reducing the probability of leakage, reducing material loss, avoiding oil tank alarms and shutdowns for maintenance due to leakage, and ensuring the continuity of production.

[0039] Furthermore, one of the jaws 310 and one of the slides 120 constitute a set of clamping groups, and there are two clamping groups, which are distributed radially opposite to each other along the sleeve 30.

[0040] It should be noted that the symmetrical design makes the force on the ferrule 30 more even when rotating, making operation easier and avoiding jamming or difficulty in operation caused by excessive force on one side. It is suitable for the need for quick tightening in high-frequency maintenance and further improves maintenance efficiency.

[0041] Furthermore, the insertion end of the bolt 450 and the end of the pin hole are both rounded.

[0042] It is important to note that the rounded corner at the insertion end of the bolt 450 serves as a guide, allowing the bolt 450 to smoothly slide into the pin hole under the force of the spring 440, avoiding jamming or incomplete locking due to alignment deviations. The rounded corner at the end of the pin hole, in conjunction with the rounded corner of the bolt 450, further reduces contact resistance and improves the smoothness of the locking operation, especially in scenarios where maintenance personnel have limited operating space, enabling quick locking. In addition, the rounded corner structure reduces hard contact wear between the bolt 450 and the pin hole, reducing the fit clearance after long-term use, ensuring the fit accuracy between the bolt 450 and the pin hole, ensuring the long-term effectiveness and reliability of the locking, and avoiding locking failure or operational inconvenience caused by jamming.

[0043] Furthermore, the opposite ends of the first connector 10 and the second connector 20 are respectively formed with finger grooves 130 arranged along their own circumference.

[0044] Understandably, the circumferentially arranged finger grooves 130 increase the friction between the hand and the end of the connector, effectively preventing slippage during disassembly and assembly. Especially when the connector surface is covered with oil or the operating space is narrow, maintenance personnel can apply force more efficiently and quickly complete the tightening or disassembly of the first and second connectors, shortening maintenance time.

[0045] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A Morgan oil pipe anti-loosening quick coupling, characterized in that, Includes a first connector, a second connector, a ferrule, and a locking assembly; wherein, The first connector is used for threaded connection to the Morgan bearing housing end, and the second connector is used for threaded connection to the hose end. The first connector is inserted into the second connector. A protrusion is formed at the end of the first connector, and a circumferential limiting portion is formed at the end of the second connector. The protrusion is inserted into the circumferential limiting portion to restrict the circumferential rotation of the first connector and the second connector. The sleeve is fitted onto the second connector, and the sleeve has a retaining part. The outer side wall of the first connector has a connecting part that mates with the retaining part. The retaining part is connected to the connecting part by snapping to press the mating end faces between the first connector and the second connector. The outer wall of the second connector also forms a circumferential limiting part of the ferrule. The ferrule has a radial through hole. One end of the locking component is hinged to the ferrule and disposed at the radial through hole. The inner side of the hinge end of the locking component has a protruding tooth. The free end of the locking component is oscillatingly disposed around its hinge end to drive the protruding tooth through the radial through hole and engage in the circumferential limiting part of the ferrule to restrict the circumferential rotation of the ferrule.

2. The Morgan oil pipe anti-loosening quick coupling according to claim 1, characterized in that, The circumferential limiting part of the connector includes a plurality of slots protruding vertically at the end of the second connector. The protrusions are inserted into the slots to restrict the circumferential rotation of the first connector and the second connector.

3. The Morgan oil pipe anti-loosening quick coupling according to claim 1, characterized in that, The circumferential limiting part of the ferrule includes a plurality of toothed grooves arranged at intervals along the circumference of the second connector on the outer side wall of the second connector, and the protruding teeth are engaged in the toothed grooves to restrict the circumferential rotation of the ferrule.

4. The Morgan oil pipe anti-loosening quick coupling according to claim 1, characterized in that, The holding part includes a claw protruding from the outside of the sleeve, and the connecting part includes a slide protruding from the outside of the first connector. The slide extends circumferentially along the first connector and is inclined in the height direction. The claw is used to lock onto the slide. The claw presses the mating end faces between the first connector and the second connector by rotating with the sleeve and rotating along the slide.

5. The Morgan oil pipe anti-loosening quick coupling according to claim 4, characterized in that, The locking assembly includes a hinge seat and a handle. The hinge seat is connected to the sleeve and disposed at the radial through hole. The handle is hinged to the hinge seat by a pin, and the inner side of the handle has a protruding tooth.

6. The Morgan oil pipe anti-loosening quick coupling according to claim 5, characterized in that, The locking assembly further includes a retaining ring, a spring, a bolt, and a pull ring. One end of the handle has a through hole extending along its length. The hinge seat has a pin hole corresponding to the through hole. The bolt passes through the through hole and is held against the pin hole, and is slidably disposed therein. The handle has a pressure plate. The retaining ring is sleeved on the bolt and holds against the through hole of the handle. The spring is sleeved on the bolt and connected between the retaining ring and the pressure plate. The pull ring is connected to the end of the bolt away from the hinge seat.

7. The Morgan oil pipe anti-loosening quick coupling according to claim 2, characterized in that, It also includes a sealing ring, and a boss is formed by protruding inward on the inner side of the end of the second connector. The sealing ring abuts between the end of the first connector and the boss of the second connector.

8. The Morgan oil pipe anti-loosening quick coupling according to claim 4, characterized in that, One of the jaws and one of the slides constitute a set of clamping groups, and there are two clamping groups, which are distributed radially opposite to each other along the sleeve.

9. The Morgan oil pipe anti-loosening quick coupling according to claim 6, characterized in that, Both the insertion end of the pull bolt and the end of the pin hole have rounded corners.

10. The Morgan oil pipe anti-loosening quick coupling according to claim 1, characterized in that, The opposite ends of the first connector and the second connector are respectively formed with finger grooves arranged along their own circumference.

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