CN113833932A

CN113833932A - Quick plugging connector

Info

Publication number: CN113833932A
Application number: CN202111132432.4A
Authority: CN
Inventors: 邵立伟; 郭初生
Original assignee: Guangdong Zhicheng Electrohydraulic Technology Co ltd; Zhongshan Research Institute Beijing Institute Of Technology; Beijing Institute of Technology BIT
Current assignee: Guangdong Zhicheng Electrohydraulic Technology Co ltd; Zhongshan Research Institute Beijing Institute Of Technology; Beijing Institute of Technology BIT
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2021-12-24

Abstract

The utility model relates to a quick shutoff connects, including a pair of opening and shutting piece, form a body that link up when opening and shutting piece and still include with the leak point of shutoff pipeline: a pair of supporting members extending in a radial direction of the opening and closing member and connected to the opening and closing member, respectively; a hinge connected to the opening part such that the opening part rotates around the hinge to be opened or closed; and two ends of the locking oil cylinder are respectively connected to the pair of supporting pieces. The quick plugging connector is characterized in that the opening and closing piece for plugging the pipeline is axially connected through the hinge piece, and the two ends of the locking oil cylinder are respectively connected with the pair of supporting pieces, so that the locking oil cylinder can be used for closing or opening the clamping piece through stretching, the leakage section of the pipeline is wrapped in the opening and closing piece, and the leakage point of the pipeline is plugged. In the plugging process, only the stretching of the locking oil cylinder needs to be controlled, the operations of alignment, thread locking and the like of the opening and closing piece do not need to be implemented, the structure is simple, and the operation is convenient.

Description

Quick plugging connector

Technical Field

The utility model relates to a pipeline repair equipment field, especially a quick shutoff connects.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The plugging joint is used for temporarily plugging leakage of the pipeline and wraps the pipeline along the axial direction of the pipeline so as to plug the leakage point of the pipeline. The existing plugging joint is two large semi-circular bodies, generally 6 large bolts are used for manual screwing, the plugging joint is carried, butted and screwed, the plugging operation is long, the torque is large, multiple persons are needed to cooperate, equipment such as a hydraulic wrench is needed to cooperate, and the quick automatic first-aid repair is not facilitated.

Disclosure of Invention

In view of the above, there is a need for a quick-plugging connector that can achieve quick plugging of a pipeline.

Therefore, the present disclosure provides a quick plugging connector, which includes a pair of opening and closing members, wherein a through pipe body is formed when the opening and closing members are closed to plug a leakage point of a pipeline, and the quick plugging connector further includes:

a pair of supporting members extending in a radial direction of the opening and closing member and connected to the opening and closing member, respectively;

a hinge connected to the opening part such that the opening part rotates around the hinge to be opened or closed;

the two ends of the locking oil cylinder are respectively connected to the pair of supporting pieces, and when the locking oil cylinder is contracted, the locking oil cylinder pulls the supporting pieces to enable the opening and closing piece to rotate around the hinge piece to be opened; when the locking oil cylinder extends, the locking oil cylinder pulls the supporting piece to enable the opening and closing piece to rotate around the hinged piece to be closed.

Preferably, the hinge member includes a turning shaft and a turning hole which is arranged at an end of the opening member and extends along an axial direction of the opening member, and the turning shaft is inserted into the turning hole to hinge the opening member.

Preferably, the locking oil cylinder is a mechanical self-locking hydraulic cylinder.

Preferably, the locking oil cylinder comprises a cylinder barrel and a piston assembly, the piston assembly comprises a piston and a piston rod, the piston rod is connected to the piston, the piston is arranged in the cylinder barrel and divides the cylinder barrel into a positive cavity and a negative cavity, the piston is in interference fit with the cylinder barrel, and the cylinder barrel and the racing rod are respectively hinged to the pair of supporting pieces.

Preferably, the opening and closing piece comprises a first sealing piece and a second sealing piece, wherein the first sealing piece is arranged at two ends of the opening and closing piece and extends along the circumferential direction of the opening and closing piece; the second sealing piece is arranged on the butted side surfaces of the opening pieces and extends along the axial direction.

Preferably, the locking cylinder further includes:

the unlocking oil port is arranged at the extending end of the piston rod;

and the unlocking oil way is arranged in the piston rod, one end of the unlocking oil way is connected with the unlocking oil port, and the other end of the unlocking oil way is connected with the unlocking cavity between the circumferential surface of the piston and the side wall of the cylinder barrel so as to expand the cylinder barrel.

Preferably, the locking cylinder further includes:

the extending oil port is arranged at the extending end of the piston rod;

and the extending oil way is arranged in the piston rod, one end of the extending oil way is connected with the extending oil port, and the other end of the extending oil way is connected with the positive cavity to convey oil to the positive cavity to push the piston rod to extend.

Preferably, the locking cylinder further includes:

the retraction oil port is arranged at the extending end of the piston rod;

and the retraction oil path is arranged in the piston rod, one end of the retraction oil path is connected with the retraction oil port, and the other end of the retraction oil path is connected with the reverse cavity so as to convey oil to the reverse cavity to push the piston rod to retract.

Preferably, the piston further comprises:

the first sealing ring is sleeved at the end part, close to the reverse cavity, of the piston and used for isolating the unlocking cavity from the reverse cavity;

the second sealing ring is sleeved on the end part, close to the positive cavity, of the piston and used for isolating the unlocking cavity and the positive cavity, wherein the unlocking cavity is located between the first sealing ring and the second sealing ring.

Preferably, the unlocking cavity comprises a groove body arranged on the circumferential surface of the piston, and the groove body extends along the circumferential direction of the piston.

Compared with the prior art, the quick plugging connector has the advantages that the opening and closing piece for plugging the pipeline is axially connected through the hinge piece, and the two ends of the locking oil cylinder are respectively connected with the pair of supporting pieces, so that the locking oil cylinder can be used for closing or opening the clamping piece through stretching, the leakage section of the pipeline is wrapped in the opening and closing piece, and the pipeline leakage point is plugged. In the plugging process, only the stretching of the locking oil cylinder needs to be controlled, the operations of alignment, thread locking and the like of the opening and closing piece do not need to be implemented, the structure is simple, and the operation is convenient.

Drawings

In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a quick plugging joint in a closed state.

Fig. 2 is a schematic structural diagram of the quick-plugging connector in an open state.

Fig. 3 is a schematic structural diagram of the opening and closing member and the locking cylinder.

Fig. 4 is a schematic structural view of a hydraulic line of the lock cylinder.

Fig. 5 is a schematic structural view of the lock cylinder.

Fig. 6 is a schematic sectional structure view of the lock cylinder.

Description of the main elements

The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Fig. 1 is a schematic structural view of a quick plugging joint in a closed state, and fig. 2 is a schematic structural view of the quick plugging joint in an open state. As shown in fig. 1 and 2, the quick-acting sealing joint includes a pair of opening units 10, a pair of supporting units 20, a hinge unit 30, and a locking cylinder 40. The locking member is used to hinge a pair of opening members 10, and the locking cylinder 40 is used to open or close the opening members 10 through the support member 20.

Fig. 3 is a schematic structural view of the opening and closing member 10 and the lock cylinder 40. As shown in fig. 1 to 3, the opening and closing member 10 has a substantially semi-cylindrical housing arc-shaped structure, and the side surfaces, i.e., the circumferential positions, of the opening and closing member 10 are hinged by the hinge member 30, so that the pair of opening and closing members 10 can rotate about the hinge member 30 to open or close the opening and closing members 10. When the opening and closing member 10 is in a closed state, as shown in fig. 1, two opening and closing members 10 are combined to form a pipe body structure with a through interior, and the inner diameter of the pipe body structure is larger than the outer diameter of the pipeline to be repaired, so that the pipe to be repaired can be wrapped, and the pipe body structure is located at the leakage point position of the pipeline to be repaired, so that the leakage point of the pipeline can be blocked, and the repairing operation of the pipeline can be started. When the opening and closing members 10 are in the open state, as shown in fig. 2, one of the two opening and closing members 10 is located above and the other is located below, one side of the opening and closing members 10 is connected by the hinge member 30, and the other side has a predetermined distance, so that the quick-acting sealing joint can be moved to above and below the pipe through the gap between the two opening and closing members 10, so that the pipe is located between the opening and closing members 10.

As shown in fig. 2, in order to improve the sealing performance of the quick-plugging connector, in the present embodiment, the opening and closing element 10 includes a first sealing member 11 and a second sealing member 12, and the first sealing member 11 is disposed at both ends of the opening and closing element 10 and extends in the circumferential direction of the opening and closing element 10; the second sealing member 12 is provided at the side of the abutting of the opening member 10 and extends in the axial direction. When the opening and closing member 10 is in a closed state, the first sealing member 11 forms a circular ring structure to seal both ends of the opening and closing member 10. The second sealing members 12 contact each other to seal the joint of the opening and closing member 10, so that the sealability of the opening and closing member 10 can be improved.

As shown in fig. 3, the hinge 30 is connected to two opening parts 10 so that the opening parts 10 can be rotated relative to the hinge 30 to be opened or closed. In this embodiment, the hinge 30 includes a turning shaft 31 and a turning hole provided at an end of the opening/closing member 10 and extending along an axial direction of the opening/closing member 10, and the turning shaft 31 is inserted into the turning hole to hinge the opening/closing member 10.

The pair of supporting members 20 has a rod-like structure corresponding to the pair of opening units 10, respectively. Specifically, as shown in fig. 3, the support member 20 includes two support portions extending in a radial direction of the opening and closing member 10 with a certain gap therebetween, and a connecting portion. Both ends of the connecting portion extend in the axial direction and are connected to the supporting portion. To facilitate the traction of the locking cylinder 40, the pair of supporting members 20 are respectively located at both sides of the hinge 30, so that the locking cylinder 40 can pull the supporting members 20 by a telescopic action, thereby pulling the supporting members 20 to open the opening member 10 or jacking the supporting members 20 to close the opening member 10.

The locking cylinder 40 is extendable or retractable for opening or closing the opening unit 10 by the supporting member 20. As shown in fig. 3, the locking cylinder 40 has one end hinged to the connecting portion of one of the pair of supporting members 20 and the other end hinged to the connecting portion of the other supporting member 20. Thus, the two end positions of the locking cylinder 40 can rotate relative to the support member 20, so as to facilitate the traction of the support member 20. In some preferred embodiments, the locking cylinder 40 may be a mechanical self-locking hydraulic cylinder. Specifically, the locking cylinder 40 includes a cylinder 41 and a piston assembly, the piston assembly includes a piston 415 and a piston rod 411, the piston rod 411 is connected to the piston 415, the piston 415 is disposed in the cylinder 41 to divide the cylinder 41 into a positive chamber 412 and a negative chamber 413, the piston 415 is in interference fit with the cylinder 41, and the cylinder 41 and the racing rod are respectively hinged to a pair of the supporting members 20.

Fig. 4 is a schematic diagram of the structure of the hydraulic line of the lock cylinder 40. As shown in fig. 4, the lock cylinder 40 is extended or retracted under the control of the hydraulic line. The hydraulic circuit includes a motor-pump set, a controller 43 and a valve switch assembly 44. The controller 43 controls the motor-pump set to drive the high-pressure oil to enter the locking cylinder 40 through the valve switch assembly 44 to perform corresponding actions. In the present embodiment, the motor-pump unit, the controller 43, the valve switch unit 44, and the like can be collectively mounted on the lock cylinder 40, thereby realizing miniaturization of the electro-hydraulic cylinder.

The motor-pump set comprises a motor 422 and a hydraulic pump 42 connected with the motor 422, wherein the hydraulic pump 42 is connected with the locking oil cylinder 40 and is used for driving oil to enter the locking oil cylinder 40 to push the piston 415 to move.

The controller 43 is connected to the motor 422 for controlling the motor 422 to drive the hydraulic pump 42 and controlling the valve switch assembly 44 to operate, so that the locking cylinder 40 can perform corresponding operations, such as extending or retracting the piston 415.

Fig. 5 is a schematic structural view of the lock cylinder 40, and fig. 6 is a schematic sectional structural view of the lock cylinder 40. As shown in fig. 5 and 6, the locking cylinder 40 includes a cylinder 41 and a piston rod 411, the piston rod 411 includes a piston 415, and the piston 415 is movably disposed in the cylinder 41 and can move back and forth in the cylinder 41 along the axial direction thereof. In general, the piston 415 and the cylinder 41 are in an interference fit state, and the cylinder 41 holds the piston 415 tightly by elastic restoring force so that the piston 415 can be kept at a fixed position without the support of high-pressure oil. Further, an unlock chamber 414 is provided between the circumferential surface of the piston 415 and the cylinder 41. In some embodiments, the unlocking chamber 414 includes one or more grooves that are communicated with each other and are disposed on the circumferential surface of the piston 415, and the grooves extend along the circumferential direction of the piston 415. When the unlock chamber 414 is filled with high-pressure oil, the high-pressure oil may expand the cylinder 41, so that a clearance fit state is formed between the cylinder 41 and the piston 415, and thus the piston 415 may move in the cylinder 41 under the pushing of the oil. In this embodiment, the piston 415 is further sleeved with two sealing rings 4114. A sealing ring 4114 is sleeved on the end of the piston 415 close to the reverse chamber 413, and is used for isolating the unlocking chamber 414 from the positive chamber 412 and the reverse chamber 413. Thus, the unlock chamber 414 is located between the seal rings 4114.

The valve switch assembly 44 is used for controlling the oil flowing direction of the locking cylinder 40, and the hydraulic pump 42 is connected to the locking cylinder 40 through the valve switch assembly 44. In the present embodiment, the valve switch assembly 44 includes an extension valve 441, a retraction valve 442, an unlock valve 443, and a hydraulic lock 444.

In this embodiment, the extending valve 441 is a reversing valve, an oil end is respectively connected to the hydraulic pump 42, the oil tank 421 and the positive chamber 412 of the locking cylinder 40, a control end is connected to the controller 43, and the working state of the extending valve 441 can be switched under the control signal of the controller 43 to communicate the positive chamber 412 of the locking cylinder 40 and the hydraulic pump 42 to extend the piston rod 411. The hydraulic fluid of the hydraulic pump 42 may flow into the positive chamber 412 of the lock cylinder 40 through the extension valve 441, or may flow back into the tank 421 from the positive chamber 412 of the lock cylinder 40 through the extension valve 441. The retraction valve 442 is a reversing valve, an oil end of the retraction valve 442 is respectively connected with the hydraulic pump 42, the oil tank 421 and the reverse chamber 413 of the locking cylinder 40, a control end of the retraction valve is connected with the controller 43, and the working state of the retraction valve 442 can be switched under a control signal of the controller 43 to communicate the reverse chamber 413 of the locking cylinder 40 and the hydraulic pump 42 to retract the piston rod 411. Specifically, the oil of the hydraulic pump 42 may flow into the reverse chamber 413 of the lock cylinder 40 through the retraction valve 442, or may flow back from the reverse chamber 413 of the lock cylinder 40 to the oil tank 421 through the retraction valve 442. The unlocking valve 443 is a reversing valve, an oil end is respectively connected with the hydraulic pump 42, the oil tank 421 and the unlocking chamber 414 between the piston 415 and the cylinder 41, and a control end is connected with the controller 43, and is used for communicating the hydraulic pump 42 and the unlocking chamber 414 under the control of the controller 43 to expand the cylinder 41. Specifically, the oil of the hydraulic pump 42 may flow into the unlock chamber 414 of the lock cylinder 40 through the unlock valve 443, or may flow back into the oil tank 421 from the unlock chamber 414 of the lock cylinder 40 through the unlock valve 443.

The hydraulic lock 444 is a one-way valve, one end of the hydraulic lock 444 is connected with the hydraulic pump 42, and the other end of the hydraulic lock 444 is connected with the unlocking valve 443, so that oil of the hydraulic pump 42 can only enter the unlocking valve 443 through the hydraulic lock 444, the hydraulic lock 444 can maintain the oil pressure in the unlocking cavity 414 when unlocking is needed, the hydraulic pump 42 is no longer required to continuously operate to maintain the oil pressure in the unlocking cavity 414, and therefore when the unlocking pressure is sufficient, the unlocking valve 443 can reset, and the hydraulic lock 444 can isolate the unlocking oil path 4112 from the locking oil cylinder 40 operation oil path.

In summary, three oil paths are formed in the valve switch assembly 44: the oil path for unlocking, extending and retracting, the oil path for unlocking is controlled by the unlocking valve 443, the oil path for extending is controlled by the extending valve 441, and the oil path for retracting is controlled by the retracting valve 442.

As shown in fig. 6, three pipes are provided in the piston rod 411 of the locking cylinder 40: unlocking oil passage 4112, extending oil passage 4111, and retracting oil passage 4113. The unlock chamber 414 is connected to the unlock valve 443 via the unlock oil passage 4112. In this embodiment, the unlocking chamber 414 is disposed in a gap between a rotating surface of the piston 415 and the cylinder 41, the unlocking chamber 414 is connected to the hydraulic pump 42 through an unlocking oil passage 4112 in the piston rod 411, and the hydraulic pump 42 inputs oil into the unlocking chamber 414 to expand the cylinder 41, so that the cylinder 41 and the piston 415 are in a clearance fit state to unlock the lock cylinder 40. In some embodiments, the electro-hydraulic cylinder further includes a pressure sensor 431, and the pressure sensor 431 is connected to the controller 43 and to an oil pipe connected to the unlock chamber 414 to detect a pressure value of the oil expanding the cylinder tube 41 (i.e., an unlock pressure) and transmit a detected pressure signal to the controller 43 in real time. In some preferred embodiments, the lock cylinder 40 is of an inverted type construction, i.e., the cylinder 41 moves with load while the piston rod 411 is fixed, so that the oil line is connected to the piston rod 411 without following the movement of the piston 415.

The retraction oil passage 4113 of the piston rod 411 has one end connected to the counter chamber 413 and the other end connected to the retraction valve 442, and the oil output from the hydraulic pump 42 enters the counter chamber 413 through the retraction oil passage 4113 to push the piston 415 to retract. One end of an extending oil path 4111 of the piston rod 411 is connected to the positive chamber 412, the other end is connected to the extending valve 441, and oil output from the hydraulic pump 42 extends out of the oil path 4111 into the positive chamber 412 to push the piston 415 to extend.

The working process of the quick plugging joint is described in detail below.

When the pipeline that reveals needs carry out quick shutoff, move quick shutoff joint to the point of revealing. The hydraulic pump 42 is controlled to drive oil liquid to enter the unlocking cavity 414 between the piston 415 and the cylinder 41 of the locking cylinder 40 through the unlocking valve 443, so that the cylinder 41 is expanded until a clearance fit is formed between the piston 415 and the cylinder 41.

Then, the unlock valve 443 is controlled so that the hydraulic pump 42 communicates with the unlock chamber 414 via the unlock valve 443 to maintain the oil pressure in the unlock chamber 414;

then, the operation of the extension valve 441 and the retraction valve 442 is controlled so that the hydraulic pump 42 communicates with the reverse chamber 413 of the locking cylinder 40 to drive the piston rod 411 to retract, and the opening and closing member 10 is opened by the supporting member 20 to move the pipe from the gap between the opening and closing members 10 to between the opening and closing members 10.

Then, the action of the extension valve 441 and the retraction valve 442 is controlled, so that the hydraulic pump 42 is communicated with the positive cavity 412 of the locking cylinder 40 to drive the piston rod 411 to extend, the locking cylinder 40 closes the opening element 10 through the supporting member 20, so that the opening element 10 wraps the pipeline along the axial direction of the pipeline and seals the leakage point of the pipeline.

After the piston rod 411 completes the moving command, the controller 43 controls the unlocking valve 443 to operate, so that the unlocking chamber 414 is communicated with the oil tank 421 through the unlocking valve 443 to unload the oil pressure in the unlocking chamber 414, and thus, an interference fit is formed between the cylinder 41 and the piston 415 to clasp the piston 415.

In the plugging process, the clamping force is the locking force provided by the stroke tail end of the locking oil cylinder 40 and is not the running resistance of the locking oil cylinder 40, so the power of a power source of the locking oil cylinder 40 is not influenced, and the turning action of the opening and closing member 10 can be completed only by small power. After the closure member 10 is inverted into position, the pressure fluid in the pipe is closed causing a gradual increase in pressure, at which point the pipe pressure exerts an opening force on the closure member 10. If a common oil cylinder is used, because the liquid in the cylinder has certain elasticity, the oil cylinder and the valve element have certain leakage, the oil cylinder can move backwards for a certain time, and the opening and closing piece 10 can have a certain opening degree to influence the sealing effect. When the quick plugging joint is unlocked, oil is filled into an unlocking cavity 414 between the circumferential surface of the piston 415 and the side wall of the cylinder 41 from an unlocking oil passage 4112 arranged in the piston rod 411 to unlock the quick plugging joint; in the moving process of the piston 415, the volumes of the unlocking oil passage 4112 and the unlocking cavity 414 are basically kept stable, so that the pressure of unlocking oil liquid does not need to be adjusted in real time any more, the energy consumption and the control complexity of a hydraulic system are effectively reduced, the energy consumption of the hydraulic system is avoided during unlocking, and the long-term high-precision mechanical locking and maintaining function of any position is realized.

According to the quick plugging connector, the opening and closing piece 10 for plugging a pipeline is axially connected through the hinge piece 30, and the two ends of the locking oil cylinder 40 are respectively connected with the pair of supporting pieces 20, so that the locking oil cylinder 40 can close or open the clamping piece through stretching, the leakage section of the pipeline is wrapped in the opening and closing piece 10, and the plugging of the leakage point of the pipeline is realized. In the plugging process, only the locking oil cylinder 40 needs to be controlled to stretch, and the operations of alignment, thread locking and the like of the opening and closing piece 10 do not need to be implemented any more, so that the structure is simple, and the operation is convenient.

After the opening and closing member 10 is turned to the right position, the locking oil cylinder 40 can always keep the clamping force through the mechanical locking function, and even if the power is off and oil in the oil cylinder is completely leaked, the locking oil cylinder can not sink or return for a long time.

In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.

Claims

1. The utility model provides a quick shutoff connects, includes a pair of opening and shutting piece, the opening and shutting piece forms a body that link up when closing and leaks the point with the shutoff pipeline, its characterized in that still includes:

2. The quick-plugging connector according to claim 1, wherein the hinge member comprises a flip shaft and a flip hole provided at an end of the opening member and extending in an axial direction of the opening member, and the flip shaft is inserted into the flip hole to hinge the opening member.

3. The quick-plugging connector according to claim 2, wherein the locking cylinder is a mechanical self-locking hydraulic cylinder.

4. The quick block joint of claim 3, wherein the locking cylinder comprises a cylinder barrel and a piston assembly, the piston assembly comprises a piston and a piston rod, the piston rod is connected to the piston, the piston is arranged in the cylinder barrel to divide the cylinder barrel into a positive cavity and a negative cavity, the piston is in interference fit with the cylinder barrel, and the cylinder barrel and the racing rod are respectively hinged to the pair of supporting members.

5. The quick-plugging connector according to claim 4, wherein the opening element comprises a first sealing element and a second sealing element, the first sealing element is arranged at two ends of the opening element and extends along the circumferential direction of the opening element; the second sealing piece is arranged on the butted side surfaces of the opening pieces and extends along the axial direction.

6. The quick disconnect coupling of claim 5, wherein said locking cylinder further comprises:

the unlocking oil port is arranged at the extending end of the piston rod;

7. The quick disconnect coupling of claim 6, wherein said locking cylinder further comprises:

the extending oil port is arranged at the extending end of the piston rod;

8. The quick disconnect coupling of claim 7, wherein said locking cylinder further comprises:

the retraction oil port is arranged at the extending end of the piston rod;

9. The quick-plugging connector of claim 8, wherein the piston further comprises:

10. The quick-plugging connector according to claim 9, wherein the unlocking chamber comprises a groove body provided on the circumferential surface of the piston, and the groove body extends in the circumferential direction of the piston.