Adaptive centering multi-quick coupling docking device and method of using same

Abstract

The application relates to a self-adaptive centering multi-quick connector docking device and a use method thereof, wherein the device comprises a first docking panel, a plurality of male connectors are arranged on the first docking panel; a second docking panel, a plurality of female connectors are arranged on the second docking panel, the female connectors are connected with the male connectors when the second docking panel is docked with the first docking panel; a self-adaptive centering structure is arranged on the female connector or the male connector, and is used for adjusting a radial gap and a shaft center deflection when the male connector or the female connector is docked; and a locking mechanism is used for locking the first docking panel and the second docking panel when the first docking panel and the second docking panel are docked. The application greatly reduces the difficulty of synchronous docking of the multi-hydraulic connector, greatly reduces the high requirement of a hydraulic connector installation positioning hole machining precision, and greatly reduces the machining manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of marine oil equipment technology, specifically to an adaptive self-aligning multi-quick coupling device and its usage method. Background Technology

[0002] The umbilical cable is used to transmit hydraulic signals, chemical agents, and photoelectric signals from the platform to the underwater production system, and to connect with underwater equipment through the umbilical cable underwater terminal docking device.

[0003] According to the production needs of the underwater production system, the umbilical cable usually carries high and low pressure pipelines, methanol, scale inhibitors, anti-marine organism agents and other chemical agents, as well as spare pipelines. Therefore, the underwater terminal docking device of the umbilical cable also needs to be designed with a corresponding number of hydraulic joints to realize the transmission of hydraulic and chemical agents.

[0004] While it is relatively easy to connect a single hydraulic joint, it is much more difficult to connect multiple hydraulic joints simultaneously underwater. This requires overcoming multiple environmental factors such as external seawater pressure, water flow, and sediment. The concentricity requirement for multiple hydraulic joints is very high, which also makes the processing and assembly difficult and costly. Furthermore, there is a high risk of failure during underwater connection. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide an adaptive self-aligning multi-quick coupling docking device and its usage method, which enables rapid docking of multiple hydraulic couplings underwater. Furthermore, the adaptive self-aligning multi-quick coupling docking device significantly reduces the difficulty of synchronous docking of multiple hydraulic couplings, eliminates the excessively high requirements for the machining accuracy of the hydraulic coupling installation positioning holes, and greatly reduces the processing and manufacturing costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The adaptive self-aligning multi-quick connector docking device of the present invention includes:

[0008] A first mating panel, wherein a plurality of male connectors are provided on the first mating panel;

[0009] The second docking panel is provided with a plurality of female connectors. When the second docking panel is docked with the first docking panel, the female connectors are connected to the male connectors.

[0010] An adaptive self-aligning structure is provided on the female connector or the male connector to adjust the radial clearance and axial deflection when the male connector or the female connector is mated.

[0011] A locking mechanism is used to lock the first and second docking panels together when they are docked.

[0012] Preferably, the self-aligning structure of the multi-quick connector docking device includes an inner ring, an outer ring, a radial adjusting pin, and a spring.

[0013] The outer ring is fitted over the inner ring, and the inner ring has a spherical groove.

[0014] The radial adjusting pin has two spherical structures at both ends. The spherical structure at the first end is embedded in the spherical groove of the inner ring body, and the spherical structure at the second end abuts against the inner wall of the outer ring body. The inner wall of the outer ring body has a spherical structure.

[0015] The spring is sleeved on the straight section of the radial adjusting pin;

[0016] The outer ring body mates with the hydraulic connector mounting hole on the first or second docking panel, and the inner ring body mates with the male or female connector.

[0017] Preferably, in the multi-quick connector docking device, the first docking panel and the second docking panel each include two overlapping sub-panels. The first sub-panel is provided with a bolt, and the second sub-panel is provided with an arc-shaped hole. The bolt passes through the arc-shaped hole so that the two sub-panels can rotate relative to each other.

[0018] Preferably, the multi-quick connector docking device has "figure-eight" shaped mounting holes horizontally arranged on the two sub-panels, and the direction of the "figure-eight" shaped mounting holes on the first sub-panel is opposite to the direction of the "figure-eight" shaped mounting holes on the second sub-panel.

[0019] When the large-diameter hole of the "figure-eight gourd" shaped mounting hole on the first sub-panel corresponds to the large-diameter hole of the "figure-eight gourd" shaped mounting hole on the second sub-panel, the large-size male or female connector is installed on the corresponding large-diameter hole.

[0020] When the small diameter hole of the "figure-eight gourd" shaped mounting hole on the first sub-panel corresponds to the small diameter hole of the "figure-eight gourd" shaped mounting hole on the second sub-panel, the small-sized male or female connector is installed on the corresponding small diameter hole.

[0021] The aforementioned multi-quick connector docking device preferably further includes a coarse guide positioning device;

[0022] The coarse guide positioning device includes a positioning groove disposed on the first docking panel and a positioning pin disposed on the second docking panel;

[0023] When the first docking panel and the second docking panel are docked, the positioning groove cooperates with the positioning pin block.

[0024] The aforementioned multi-quick connector docking device preferably further includes a precision guide and positioning device;

[0025] The precision guiding and positioning device includes a positioning pin rod disposed on the first docking panel and a positioning hole disposed on the second docking panel;

[0026] When the first docking panel and the second docking panel are docked, the positioning pin engages with the positioning hole.

[0027] Preferably, the positioning pin of the multi-quick connector docking device has at least two indicator strips of different colors.

[0028] Preferably, in the multi-quick connector docking device, the locking mechanism includes:

[0029] Nuts are used to fix the first mating panel in place.

[0030] The rotating sleeve is a cylindrical structure with a stepped inner cavity. A locking spring is provided in the first cavity of the stepped inner cavity. A flange is fixedly provided at the first end of the rotating sleeve. The flange is used to limit the locking spring. A square head is provided at the second end of the rotating sleeve.

[0031] A screw rod is inserted through the second mating panel. Its first end is used to screw onto the nut, and its second end is located in the second cavity of the stepped inner cavity. One end of the locking spring is sleeved on the second end of the screw rod.

[0032] The locking mechanism further includes a first outer sleeve, a connecting ring, and a second outer sleeve;

[0033] The first outer sleeve, the connecting ring, and the second outer sleeve are sequentially fitted onto the rotating sleeve from front to back, and the first outer sleeve and the second outer sleeve are connected by the connecting ring; the whole formed by the first outer sleeve, the connecting ring, and the second outer sleeve is connected to the second mating panel;

[0034] The screw is equipped with an emergency exit groove, and the screw has a hollow structure.

[0035] The present invention also provides a method of using an adaptive self-aligning multi-quick coupling device, comprising the following steps:

[0036] The first docking panel is pre-installed on the underwater equipment. The diver or ROV carries the second docking panel and docks with the first docking panel. The second docking panel is gradually brought closer to the first docking panel. During the docking process, the first stage of coarse positioning is achieved by the positioning groove cooperating with the positioning pin block. Then, the second stage of fine positioning is achieved by the positioning pin rod and the positioning pin hole. The docking is then achieved by the cooperation of the first stage of coarse positioning and the second stage of fine positioning.

[0037] When the screw and nut are not concentric, the locking spring causes the screw to retract and buffer to adjust the centering position, thus realizing the spring buffer of the third-stage locking mechanism. Through the adaptive self-aligning structure, the radial clearance and shaft deflection are adjusted so that the shafts of the male connector and the corresponding female connector coincide, thus realizing the fourth-stage radial automatic self-aligning of the multi-hydraulic connector. The docking is achieved through the cooperation of the first-stage coarse positioning, the second-stage fine positioning, the third-stage locking mechanism spring buffer, and the fourth-stage radial automatic self-aligning of the multi-hydraulic connector.

[0038] The first and second docking panels are locked together by the locking mechanism.

[0039] Preferably, the method of use further includes the following steps:

[0040] The size of the male or female connector mounting holes can be adjusted by the interaction of the "figure-eight gourd" shaped mounting holes on the first and second sub-panels to accommodate male or female connectors of different sizes and specifications.

[0041] When the first docking panel and the second docking panel are docked, two different colored indicator strips are designed on the positioning pin. When the first indicator strip is fully visible, it indicates that the first docking process of the first docking panel and the second docking panel has been completed. The diver or ROV then operates the tightening wrench to lock the two panels. When the second indicator strip is fully visible and the torque is tightened to the required level, it indicates that the two panels have been docked and the diver or ROV can then exit the operation.

[0042] The screw is equipped with a pressure relief hole to achieve internal and external pressure balance during the docking process. When the underwater terminal docking device of the umbilical cable is recovered after long-term service, due to factors such as marine organism growth, when the screw and nut are locked, the tightening torque is increased to reach the breaking torque at the emergency exit slot position, causing the screw to break and realizing the emergency exit of the second docking panel.

[0043] The present invention has the following advantages due to the adoption of the above technical solutions:

[0044] (1) The present invention is designed with coarse positioning and fine positioning guide positioning devices based on the hydraulic panel, which can realize the combination of rapid and precise positioning of the panel, ensuring the reliability and efficiency of underwater docking.

[0045] (2) The screw spring buffer retraction structure of the present invention can realize the buffer retraction when the two panels are misaligned during docking, avoid forced docking under misalignment, and make the screw and nut threaded together. Combined with the self-adjusting structure on the hydraulic joint, after the concentricity is readjusted, the docking is re-docked, ensuring the safety and reliability of docking.

[0046] (3) The present invention, through its adaptive self-aligning structure, can adjust the radial clearance and shaft deflection when the hydraulic male and female connectors are connected;

[0047] (4) Since multiple hydraulic joints are arranged on a panel, the present invention can realize the male and female docking of multiple hydraulic joints in one connection. The docking process is achieved by a docking method that combines the first-level coarse positioning, the second-level fine positioning, the third-level locking mechanism spring buffer, and the fourth-level radial automatic self-aligning of multiple hydraulic joints. This method takes into account both docking efficiency and docking reliability. The present invention can realize the rapid docking of multiple hydraulic joints underwater, while greatly reducing the difficulty of synchronous docking of multiple hydraulic joints and the excessively high requirements for the machining accuracy of the hydraulic joint installation positioning holes, thus greatly reducing the processing and manufacturing cost.

[0048] (5) In view of the problem of inconsistent functional specifications of hydraulic pipelines in different umbilical cables, the present invention designs a universal multi-hydraulic connector docking panel. By adjusting the adaptation installation angle of the hydraulic connector panel, it is possible to assemble a larger hydraulic connector at the same hydraulic connector installation position, while also assembling a smaller hydraulic connector, thus realizing on-demand selection and realizing the universal design of the hydraulic panel.

[0049] (6) The present invention provides a docking progress indicator device on the docking panel at the same time, and provides clear indication of the progress of the diver or ROV in the installation and docking process by indicating several key stages in the docking process, so as to remind the diver or ROV when to proceed to the next step, thus ensuring the reliability of the docking process.

[0050] (7) By designing a hollow cylindrical hole on the screw, the present invention achieves pressure balance between the inner and outer cavities of the locking mechanism during the locking process, thereby ensuring the smooth progress of the underwater docking process;

[0051] (8) The present invention designs an emergency exit groove in a local section of the screw. After the end of service, if the screw cannot be unlocked and recovered normally due to factors such as the growth of marine organisms, the locking mechanism is operated by a diver or underwater robot until the destructive torque of the locking mechanism is greater than the normal locking torque and a safety margin is considered. Then the screw will break at the section of the groove where the stress intensity is weakened, thereby separating the second docking panel from the first docking panel for recovery. Attached Figure Description

[0052] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. In the drawings:

[0053] Figure 1 This is a schematic diagram of the self-aligning multi-quick connector docking device described in this invention;

[0054] Figure 2 This is a schematic diagram of the adaptive center-aligning structure in this invention;

[0055] Figure 3 This is a schematic diagram of the assembly of the male or female connector with the self-aligning structure in this invention;

[0056] Figure 4 This is a schematic diagram of the structure of the first docking panel in this invention, which includes two sub-panels;

[0057] Figure 5 This is a schematic diagram of the structure of one of the sub-panels in this invention;

[0058] Figure 6 This is a schematic diagram of the structure of the first docking panel in this invention, which shows the structure of the positioning groove;

[0059] Figure 7 This is a schematic diagram of the docking device in this invention before docking;

[0060] Figure 8 This is a schematic diagram of the docking device in the present invention in preparation for docking;

[0061] Figure 9 This is a schematic diagram of the docking device after docking in this invention;

[0062] Figure 10 This is a schematic diagram of the internal structure of the locking mechanism in this invention;

[0063] Figure 11 yes Figure 10 A schematic diagram of the screw structure.

[0064] The markings in the attached diagram are as follows:

[0065] 1-First mating panel; 101-Male connector; 2-Second mating panel; 201-Female connector; 3-Self-adjusting structure; 301-Inner ring; 302-Outer ring; 303-Radial adjusting pin; 304-Spring; 4-Locking mechanism; 401-Nut; 402-Rotating sleeve; 403-Locking spring; 404-Flange; 405-Square head; 406-Screw; 407-First outer sleeve; 408-Connecting ring; 409-Second outer sleeve; 410-Emergency withdrawal groove; 5-Sub-panel; 501-Bolt; 502-Arc-shaped hole; 503-“Figure-8 gourd” shaped mounting hole; 6-Positioning groove; 7-Positioning pin block; 8-Positioning pin rod; 9-Positioning hole. Detailed Implementation

[0066] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0067] This invention provides an adaptive self-aligning multi-quick coupling docking device, which can realize the rapid docking of multiple hydraulic couplings underwater. The adaptive self-aligning structure greatly reduces the difficulty of synchronous docking of multiple hydraulic couplings and significantly reduces the high requirements for the machining accuracy of the hydraulic coupling installation positioning holes, thereby greatly reducing the processing and manufacturing costs.

[0068] like Figure 1 As shown, the self-aligning multi-quick connector docking device provided by the present invention includes: a first docking panel 1, on which a plurality of male connectors 101 are disposed; a second docking panel 2, on which a plurality of female connectors 201 are disposed, wherein when the second docking panel 2 docks with the first docking panel 1, the female connectors 201 are connected to the male connectors 101; and a self-aligning structure 3 (see Figure 3 The first mating panel 1 and the second mating panel 2 are located between the female connector 201 and the male connector 101 and are used to adjust the radial clearance and axial deflection when the male connector 101 and the female connector 201 are mated; the locking mechanism 4 is used to lock the first mating panel 1 and the second mating panel 2 when they are mated.

[0069] In the above embodiments, preferably, as follows: Figure 2As shown, the self-aligning structure 3 includes an inner ring 301, an outer ring 302, a radial adjusting pin 303, and a spring 304. The outer ring 302 is sleeved on the outer ring 301, and the inner ring has a spherical groove. The radial adjusting pin 303 has two spherical structures at both ends. The spherical structure at the first end is embedded in the spherical groove of the inner ring, and the spherical structure at the second end abuts against the inner wall of the outer ring, wherein the inner wall of the outer ring is spherical. In addition, to facilitate the installation of the radial adjusting pin 303, the outer ring is configured to be formed by the joining of two half-rings. The spring 304 is sleeved on the straight section of the radial adjusting pin 303. The outer ring 301 is connected to the hydraulic connector mounting hole on the first or second mating panel, and the inner ring 301 is connected to the male connector 101 or the female connector 201.

[0070] In the above embodiments, preferably, as follows: Figure 4 As shown, the first docking panel 1 and the second docking panel 2 each include two overlapping sub-panels 5. The first sub-panel 5 is provided with a bolt 501, and the second sub-panel 5 is provided with an arc-shaped hole 502. The bolt 501 passes through the arc-shaped hole 502 so that the two sub-panels 5 can rotate relative to each other.

[0071] In the above embodiments, preferably, as follows: Figure 5 As shown, two sub-panels 5 are respectively provided with horizontally arranged "figure-eight" shaped mounting holes 503, and the direction of the "figure-eight" shaped mounting holes 503 on the first sub-panel is opposite to the direction of the "figure-eight" shaped mounting holes 503 on the second sub-panel; when the large diameter hole of the "figure-eight" shaped mounting hole 503 on the first sub-panel corresponds to the large diameter hole of the "figure-eight" shaped mounting hole 503 on the second sub-panel, the large-size male or female connector is installed on the corresponding large diameter hole; when the small diameter hole of the "figure-eight" shaped mounting hole 503 on the first sub-panel corresponds to the small diameter hole of the "figure-eight" shaped mounting hole 503 on the second sub-panel, the small-size male or female connector is installed on the corresponding small diameter hole.

[0072] In the above embodiments, preferably, as follows: Figure 6 As shown, the present invention also includes a coarse guiding positioning device; the coarse guiding positioning device includes a positioning groove 6 disposed on the first docking panel 1 and a positioning pin 7 disposed on the second docking panel 2 (see...). Figure 7 When the first docking panel 1 and the second docking panel 2 are docked, the positioning groove 6 cooperates with the positioning pin block 7.

[0073] In the above embodiments, preferably, as follows: Figure 7As shown, the present invention also includes a precision guiding and positioning device; the precision guiding and positioning device includes a positioning pin 8 disposed on the first docking panel 1 and a positioning hole 9 disposed on the second docking panel 2; when the first docking panel 1 and the second docking panel 2 are docked, the positioning pin 8 cooperates with the positioning hole 9.

[0074] In the above embodiment, preferably, the positioning pin 8 is provided with at least two segments of indicator strips of different colors. When the first docking panel and the second docking panel are docked, by designing two segments of indicator strips of different colors on the positioning pin 8, when the first segment of indicator strip fully appears, it indicates that the first step of the docking process of the first docking panel and the second docking panel has been completed; the diver or ROV operates the tightening wrench behind it to lock the two panels. When the second segment of indicator strip fully appears and the torque is tightened to the required level, it indicates that the two panels have been docked, and the diver or ROV exits the operation.

[0075] In the above embodiments, preferably, as follows: Figure 10 As shown, the locking mechanism 4 includes: a nut 401, fixedly connected to the first docking panel 1; a rotating sleeve 402, which is a cylindrical structure with a stepped inner cavity, wherein a locking spring 403 is disposed in the first cavity of the stepped inner cavity, a flange 404 is fixedly disposed at the first end of the rotating sleeve 402, the flange 404 is used to limit the locking spring 403, and a square head 405 is disposed at the second end of the rotating sleeve 402; and a screw 406, which passes through the second docking panel 2, wherein its first end is used to screw onto the nut 401, and its second end is disposed in the stepped inner cavity. Inside the second cavity, one end of the locking spring 403 is sleeved on the second end of the screw 406; the locking mechanism 4 also includes a first outer sleeve 407, a connecting ring 408, and a second outer sleeve 409; the first outer sleeve 407, the connecting ring 408, and the second outer sleeve 409 are sequentially sleeved on the outside of the rotating sleeve 402 from front to back, and the first outer sleeve 407 and the second outer sleeve 409 are connected by the connecting ring 408; the first outer sleeve 407, the connecting ring 408, and the second outer sleeve 409 form a whole that is connected to the second docking panel 2.

[0076] In the above embodiments, preferably, as follows: Figure 11 As shown, the screw 406 is provided with an emergency exit groove 410, and the screw 406 is a hollow structure.

[0077] It should be noted that an emergency withdrawal groove is designed on the screw. After the underwater umbilical cable terminal has been in place for a long time, due to silt, marine organisms, or other influencing factors, the screw and nut may become stuck, causing the second docking panel to be unable to retract during umbilical cable retrieval. In this case, by increasing the tightening torque, the emergency withdrawal groove will reach the breaking torque and break, thus enabling the emergency retraction of the second docking panel. In addition, the screw is designed with a hollow structure to avoid waterlocking of the locking mechanism during underwater docking, which could prevent the underwater umbilical cable terminal docking device from docking.

[0078] In addition, the screw is equipped with a pressure relief hole to achieve internal and external pressure balance during the docking process.

[0079] The present invention also provides a method of using an adaptive self-aligning multi-quick coupling device, comprising the following steps:

[0080] (1) The first docking panel is pre-installed on the underwater equipment. The diver or ROV carries the second docking panel and docks with the first docking panel. The second docking panel is gradually brought closer to the first docking panel. During the docking process, the first stage of coarse positioning is achieved by the positioning groove cooperating with the positioning pin block. Then, the second stage of fine positioning is achieved by the positioning pin rod and the positioning pin hole. The docking is then achieved by the first stage of coarse positioning and the second stage of fine positioning.

[0081] (2) When the screw and nut are not concentric, the screw is retracted and buffered by the locking spring to adjust the centering position, so as to realize the spring buffer of the third-stage locking mechanism; the radial clearance and shaft deflection are adjusted by the self-adaptive self-aligning structure so that the shafts of the male connector and the corresponding female connector are coincident, thus realizing the radial automatic self-aligning of the fourth-stage multi-hydraulic connector. The overall docking method is: docking is carried out by coarse positioning of the first stage, fine positioning of the second stage, spring buffer of the third-stage locking mechanism and radial automatic self-aligning of the fourth-stage multi-hydraulic connector.

[0082] (3) Lock the first docking panel and the second docking panel through the locking mechanism.

[0083] In the above embodiments, preferably, the following steps are also included:

[0084] (4) Adjust the size of the male or female connector mounting holes by the mutual cooperation of the “figure-eight gourd” shaped mounting holes on the first and second sub-panels to accommodate male or female connectors of different sizes and specifications.

[0085] (5) When the first docking panel and the second docking panel are docked, two different colored indicator strips are designed on the positioning pin. When the first indicator strip appears completely, it indicates that the first docking process of the first docking panel and the second docking panel has been completed. The diver or ROV operates the tightening wrench behind the operation to lock the two panels. When the second indicator strip appears completely and the torque is tightened to the required level, it indicates that the two panels have been docked and the diver or ROV exits the operation.

[0086] (6) A pressure relief hole is designed on the screw to achieve internal and external pressure balance during the docking process. When the underwater terminal docking device of the umbilical cable is recovered after long-term service, due to factors such as marine organism growth, when the screw and nut are locked, the torque is increased to reach the breaking torque at the emergency exit slot position, and the screw breaks, so as to realize the emergency exit of the second docking panel.

[0087] The docking process of this invention is as follows: Figure 7-9 As shown.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-aligning multi-quick connector docking device, characterized in that, include: A first mating panel, wherein a plurality of male connectors are provided on the first mating panel; The second docking panel is provided with a plurality of female connectors. When the second docking panel is docked with the first docking panel, the female connectors are connected to the male connectors. An adaptive self-aligning structure is provided on the female connector or the male connector to adjust the radial clearance and axial deflection when the male connector and the female connector are mated. A locking mechanism is used to lock the first and second mating panels together when they are mated. The first docking panel and the second docking panel each include two overlapping sub-panels. The first sub-panel is provided with a bolt, and the second sub-panel is provided with an arc-shaped hole. The bolt passes through the arc-shaped hole so that the two sub-panels can rotate relative to each other. The two sub-panels are respectively provided with "figure-eight gourd" shaped mounting holes horizontally, and the direction of the "figure-eight gourd" shaped mounting holes of the first sub-panel is opposite to the direction of the "figure-eight gourd" shaped mounting holes of the second sub-panel. When the large-diameter hole of the "figure-eight gourd" shaped mounting hole on the first sub-panel corresponds to the large-diameter hole of the "figure-eight gourd" shaped mounting hole on the second sub-panel, the large-size male or female connector is installed on the corresponding large-diameter hole. When the small diameter hole of the "figure-eight gourd" shaped mounting hole on the first sub-panel corresponds to the small diameter hole of the "figure-eight gourd" shaped mounting hole on the second sub-panel, the small-sized male or female connector is installed on the corresponding small diameter hole.

2. The multi-quick connector docking device according to claim 1, characterized in that, The adaptive self-aligning structure includes an inner ring, an outer ring, a radial adjusting pin, and a spring; The outer ring is fitted over the inner ring, and the inner ring has a spherical groove. The radial adjusting pin has two spherical structures at both ends. The spherical structure at the first end is embedded in the spherical groove of the inner ring body, and the spherical structure at the second end abuts against the inner wall of the outer ring body. The inner wall of the outer ring body has a spherical structure. The spring is sleeved on the straight section of the radial adjusting pin; The outer ring body mates with the hydraulic connector mounting hole on the first or second docking panel, and the inner ring body mates with the male or female connector.

3. The multi-quick connector docking device according to claim 2, characterized in that, It also includes a coarse guide positioning device; The coarse guide positioning device includes a positioning groove disposed on the first docking panel and a positioning pin disposed on the second docking panel; When the first docking panel and the second docking panel are docked, the positioning groove cooperates with the positioning pin block.

4. The multi-quick connector docking device according to claim 3, characterized in that, It also includes a precision guidance and positioning device; The precision guiding and positioning device includes a positioning pin rod disposed on the first docking panel and a positioning hole disposed on the second docking panel; When the first docking panel and the second docking panel are docked, the positioning pin engages with the positioning hole.

5. The multi-quick connector docking device according to claim 4, characterized in that, The positioning pin is provided with at least two indicator strips of different colors.

6. The multi-quick connector docking device according to claim 5, characterized in that, The locking mechanism includes: Nuts are used to fix the first mating panel in place. The rotating sleeve is a cylindrical structure with a stepped inner cavity. A locking spring is provided in the first cavity of the stepped inner cavity. A flange is fixedly provided at the first end of the rotating sleeve. The flange is used to limit the locking spring. A square head is provided at the second end of the rotating sleeve. A screw rod is inserted through the second mating panel. Its first end is used to screw onto the nut, and its second end is located in the second cavity of the stepped inner cavity. One end of the locking spring is sleeved on the second end of the screw rod. The locking mechanism further includes a first outer sleeve, a connecting ring, and a second outer sleeve; The first outer sleeve, the connecting ring, and the second outer sleeve are sequentially fitted onto the rotating sleeve from front to back, and the first outer sleeve and the second outer sleeve are connected by the connecting ring; the whole formed by the first outer sleeve, the connecting ring, and the second outer sleeve is connected to the second mating panel; The screw is equipped with an emergency exit groove, and the screw has a hollow structure.

7. A method of using the self-aligning multi-quick coupling device according to claim 6, characterized in that, Includes the following steps: The first docking panel is pre-installed on the underwater equipment. The diver or ROV carries the second docking panel and docks with the first docking panel. The second docking panel is gradually brought closer to the first docking panel. During the docking process, the first stage of coarse positioning is achieved by the positioning groove cooperating with the positioning pin block. Then, the second stage of fine positioning is achieved by the positioning pin rod and the positioning pin hole. The docking is then achieved by the cooperation of the first stage of coarse positioning and the second stage of fine positioning. When the screw and nut are not concentric, the locking spring causes the screw to retract and buffer to adjust the centering position, thus realizing the spring buffer of the third-stage locking mechanism. Through the adaptive self-aligning structure, the radial clearance and shaft deflection are adjusted so that the shafts of the male connector and the corresponding female connector coincide, thus realizing the fourth-stage radial automatic self-aligning of the multi-hydraulic connector. The docking is achieved through the cooperation of the first-stage coarse positioning, the second-stage fine positioning, the third-stage locking mechanism spring buffer, and the fourth-stage radial automatic self-aligning of the multi-hydraulic connector. The first and second docking panels are locked together by the locking mechanism.

8. The method of use according to claim 7, characterized in that, It also includes the following steps: The size of the male or female connector mounting holes can be adjusted by the interaction of the "figure-eight gourd" shaped mounting holes on the first and second sub-panels to accommodate male or female connectors of different sizes and specifications. When the first docking panel and the second docking panel are docked, two different colored indicator strips are designed on the positioning pin. When the first indicator strip is fully visible, it indicates that the first docking process of the first docking panel and the second docking panel has been completed. The diver or ROV then uses the tightening wrench to lock the two panels. When the second indicator strip is fully visible and the torque is tightened to the required level, it indicates that the two panels have been docked and the diver or ROV can then exit the operation. The screw is equipped with a pressure relief hole to achieve internal and external pressure balance during the docking process. When the underwater terminal docking device of the umbilical cable is recovered after long-term service, due to the growth of marine organisms, when the screw and nut are locked, the tightening torque is increased to reach the breaking torque at the emergency exit slot position, causing the screw to break and realizing the emergency exit of the second docking panel.

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