A quick connector device and method of operation thereof

Abstract

The application discloses a quick plug connector device and an operating method thereof, and belongs to the technical field of mechanical engineering, which comprises a fixed connector, a butt connector, a pendulum assembly, a driving head, a dismounting frame and an unlocking key. The fixed connector comprises a fixed connector body, a first locking hole, a first locking adjusting hole, a second locking hole and a second locking adjusting hole; the butt connector comprises a butt connector body, a first sliding lock hole, a second sliding lock hole, a limiting block and a sliding groove; the butt connector body comprises a front cavity, a rear cavity, a partition plate and a guide groove; the first sliding lock hole and the second sliding lock hole are limited by limiting surfaces; the pendulum assembly comprises a front pendulum, a front pendulum fixing pin, a rear pendulum and a rear pendulum fixing pin; the front pendulum and the rear pendulum comprise a weight deviation end, a locking end, a fixing hole and a guide surface; the driving head comprises a driving head body and a sliding block; and the dismounting frame comprises a body, a lifting connector, a limiting groove and an unlocking groove. The technical scheme of the application is more prominent in high-altitude operation.

Description

Technical Field

[0001] This invention relates to the field of mechanical engineering technology, and more specifically, to a quick-connect coupling device and its operating method. Background Technology

[0002] Oil drilling surface equipment often involves challenging and high-risk aerial connection operations, especially the high-altitude connection of main load-bearing equipment. In recent years, with the increasing integration of mechanical equipment, the demand for modular connections has grown significantly. Currently, the main factor restricting high-altitude connection operations is the structural type of the modular connection joints. How to achieve rapid, efficient, and reliable connections at high altitudes is a hot topic of concern for the entire industry. Connecting modular structures at high altitudes requires operators to be positioned at a height, while also requiring specialized personnel on the drilling platform to operate cranes to assist in the high-altitude connection work. Overall, this type of operation is difficult, risky, and time-consuming, necessitating the use of large lifting equipment.

[0003] Currently, the commonly used high-altitude docking methods in existing technologies all use standard or non-standard fasteners for connection. The connection process of fasteners requires full manual intervention and the use of large lifting equipment to complete the docking operation. The whole process is time-consuming, risky, and difficult, and it does not conform to the direction of automation development in the entire mechanical equipment field.

[0004] There is an urgent need to design a quick-connect device to meet the needs of high-altitude connection of modular mechanical equipment. Summary of the Invention

[0005] The purpose of this invention is to overcome the deficiencies in the existing technology and provide a quick-connect coupling device and its operating method. This technical solution is a high-altitude automatic docking technology, forming a quick-connect coupling equipment for rapid and automated connection of modular mechanical devices, with particularly prominent advantages for high-altitude operations. The embodiments of this invention are implemented as follows:

[0006] On one hand, embodiments of the present invention provide a quick-connect device, including a fixed connector, a mating connector, a pendulum assembly, a drive head, a disassembly / assembly frame, and an unlocking key. The fixed connector includes a fixed connector body, a first locking hole, a first locking adjustment hole, a second locking hole, and a second locking adjustment hole; the mating connector includes a mating connector body, a first sliding lock hole, a second sliding lock hole, a limiting block, and a sliding groove; the mating connector body includes a front cavity, a rear cavity, a partition, and a guide groove; the first and second sliding lock holes have limiting surfaces; the pendulum assembly includes a front pendulum, a front pendulum fixing pin, a rear pendulum, and a rear pendulum fixing pin; the front and rear pendulums include a weighted end, a locking end, a fixing hole, and a guide surface; the front pendulum includes a first weighted end, a first locking end, a first fixing hole, and a first guide surface, and the rear pendulum includes a second weighted end, a second locking end, a second fixing hole, and a second guide surface; the drive head includes a drive head body and a sliding block; the disassembly / assembly frame includes a body, a lifting connector, a limiting groove, and an unlocking groove.

[0007] Specifically, the first locking hole and the first locking adjustment hole are arranged vertically on one side of the fixed connector body, and the second locking hole and the second locking adjustment hole are arranged vertically on the other side of the fixed connector body. The locking holes arranged on both sides of the fixed connector body are also staggered in the front-back direction.

[0008] Specifically, the first sliding lock hole is distributed in the front cavity, and the second sliding lock hole is distributed in the rear cavity. The first sliding lock hole can coincide with the first locking hole and the first locking adjustment hole through vertical movement, and the second sliding lock hole can coincide with the second locking hole and the second locking adjustment hole through vertical movement. When the sliding lock hole and the locking hole are connected, corresponding adjustment holes are preset to ensure the success rate of connection.

[0009] Specifically, the front pendulum fixing pin connects the front pendulum to the front cavity through a fixing hole, and the rear pendulum fixing pin connects the rear pendulum to the rear cavity through a fixing hole. The front pendulum can rotate through the first sliding lock hole along the front pendulum fixing pin, and the rear pendulum can rotate through the second sliding lock hole along the rear pendulum fixing pin.

[0010] Specifically, the locking ends of the front and rear pendulums are in contact with the limiting surfaces. The presence of the limiting surfaces allows the unbalanced end and the locking end to reach a balanced state. The limiting surfaces include a first limiting surface and a second limiting surface.

[0011] Specifically, the drive head is connected to the docking joint via a sliding block. The drive head body can move along the guide groove of the docking joint body, while the sliding block can slide along the sliding groove of the docking joint body.

[0012] Specifically, the docking connector limiting block can slide within the disassembly and assembly frame limiting groove; the disassembly and assembly frame can slide along the docking connector body partition; the unlocking key can be inserted into the disassembly and assembly frame unlocking groove. When the unlocking key is inserted into the unlocking groove, it can simultaneously contact the drive head sliding block and push the sliding block to slide along the sliding groove.

[0013] On the other hand, embodiments of the present invention provide an operation method for a quick-connect device, including a self-locking process and an unlocking process:

[0014] The self-locking process mainly consists of two steps: target entry and locking.

[0015] The unlocking process mainly consists of three steps: inserting the unlocking device, separating and unlocking, and retracting the target.

[0016] Before the self-locking process, there is a logical initial state: the drive head is stationary at the lower end of the sliding groove via the sliding block; the locking ends of the front and rear pendulums are in contact with the limiting surface, which includes a first limiting surface and a second limiting surface, and is fixed to the docking joint body by a fixing pin, so that the weighted end and the locking end of the pendulum reach a balanced and static state relative to the docking joint body. The above logical initial state is only affected by gravity.

[0017] Specifically, the target entry process involves the crane connecting to the lifting joint and the disassembly frame, with the crane body sliding along both sides of the partition until the limiting groove and the limiting block come into contact. At this point, the disassembly frame drives the docking joint to move towards the fixed joint through the limiting block until the docking joint smoothly enters the fixed joint. This process is called target entry.

[0018] Specifically, the locking mechanism first defines the initial locking position as the contact between the current pendulum and the lower end of the fixed joint. As the docking joint continues to enter the fixed joint body, the front pendulum rotates into the front cavity, and the rear pendulum rotates into the rear cavity. When the first sliding lock hole coincides with the first locking hole or the first locking adjustment hole, and the second sliding lock hole coincides with the second locking hole or the second locking adjustment hole, the front and rear pendulums return to their initial positions. The crane moves along the direction of gravity, and the docking joint exits along the direction of gravity under the action of gravity, so that the locking ends of the front and rear pendulums contact the first locking hole (or the first locking adjustment hole) and the second locking hole (or the second locking adjustment hole) of the fixed joint body, respectively. The limiting groove and the limiting block separate, and the disassembly frame can be completely detached from the docking joint. At this time, the initial state of the pendulum becomes the locked state, and its locking state is determined by the pendulum fixing pin, the locking hole, and the limiting surface of the sliding lock hole.

[0019] Specifically, the aforementioned insertion unlocking device involves inserting the unlocking key into the unlocking slot of the disassembly frame. The crane connects to the disassembly frame via a lifting joint and lifts the disassembly frame body. The body slides along both sides of the partition until the unlocking key and the sliding block of the drive head come into contact. At this point, the limiting slot and the limiting block do not come into contact.

[0020] Specifically, the separation and unlocking process involves the unlocking key pushing the drive head sliding block along the sliding groove until the drive head contacts the guide surfaces of the front and rear pendulums. The drive head then rotates along the guide surfaces to the front and rear cavities, respectively. At this point, the front and rear pendulums do not contact the fixed joint or the mating joint.

[0021] Specifically, the target removal process involves the crane pushing out along the separation direction (i.e., the direction of gravity of the docking joint) after the fixed joint and the docking joint are completely separated, thus unlocking the target removal process. When the sliding block contacts the upper end of the sliding groove, the limiting groove and the limiting block also contact each other. The former ensures that the front and rear pendulums will not rotate, while the latter ensures that there is no relative movement between the docking joint body and the pendulums. These two features ensure that the fixed joint and the docking joint are completely separated during the target removal process.

[0022] Preferably, the present invention is not limited to the process described above, i.e., the fixed joint and the butt joint are perpendicular to the horizontal plane. The automatic docking process can also be at a certain angle to the horizontal plane, which can be freely selected within the range of 0°-180°. The automatic docking process at an angle requires the addition of a drag-reducing centering block on the inner surface of the fixed joint. Its function is to ensure that all locking holes and sliding locking holes are aligned, and to reduce the frictional resistance when the fixed joint and the butt joint move relative to each other.

[0023] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0024] 1. The quick-connect connector involved in this invention is suitable for modular and automated equipment connections, and its advantages are particularly prominent for high-altitude connection operations. The entire docking process mainly consists of the following five steps: target insertion, locking, insertion of the unlocking device, separation and unlocking, and target withdrawal. Among them, the first two steps can realize the self-locking of the connector, and the last three steps can realize the unlocking of the connector. The entire process can be automated without manual intervention.

[0025] 2. The pendulum assembly involved in this invention is the key to realizing automated docking technology. The design concept of the weighted pendulum with a guide surface maximizes the role of gravity in the whole process. The locking end of the pendulum and the guide surface can ensure the smooth realization of the self-locking and unlocking process.

[0026] 3. The disassembly and assembly frame involved in this invention is a power source for self-locking and unlocking. The locking and unlocking functions can be switched by inserting an unlocking key, without the need to add external power.

[0027] 4. In order to realize the locking process, an adjustment hole is provided in this invention. The locking hole and the locking adjustment hole have the same function, which improves the success rate of self-locking.

[0028] 5. In order to achieve the target withdrawal process, that is, the complete separation of the fixed joint and the docking joint, the present invention sets up three combinations of sliding block sliding groove, limiting block limiting groove, and driving head guide groove, which have the functions of straightening, guiding and limiting, so that the internal structure of the docking joint remains relatively static during the target withdrawal process, thereby improving the success rate of unlocking on the first attempt. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the assembly (initial state before self-locking) of the present invention, where A is the right view and B is the left view;

[0031] Figure 2 This is a schematic diagram of a mating joint, where A is the right view, B is the left view, and C is the sectional view;

[0032] Figure 3 This is a top view of the mating joint;

[0033] Figure 4 This is a schematic diagram of the pendulum assembly;

[0034] Figure 5 This is a schematic diagram of the drive head;

[0035] Figure 6 This is a diagram of the assembly / disassembly frame;

[0036] Figure 7 This is a schematic diagram of the locking process, where A is an overall schematic diagram of target entry and locking, B is a cross-sectional view of target entry, and C is a cross-sectional view of locking.

[0037] Figure 8 This is a diagram illustrating the insertion of the unlocking device;

[0038] Figure 9 This is a schematic diagram of separation, unlocking, and target withdrawal. In this diagram, A is an overall schematic diagram of separation, unlocking, and target withdrawal; B is a cross-sectional view of separation and unlocking; and C is a cross-sectional view of target withdrawal.

[0039] Figure 10 This is a schematic diagram showing the quick-connect connector being inserted at an angle to the horizontal plane;

[0040] In the diagram, 1-fixed connector, 2-button connector, 3-pendulum assembly, 4-drive head, 5-assembly / disassembly bracket, 6-unlock key;

[0041] 1-Fixed connector, 11-Fixed connector body, 12-First locking hole, 13-First locking adjustment hole, 14-Second locking hole, 15-Second locking adjustment hole;

[0042] 2-Matching joint, 21-Matching joint body, 22-First sliding lock hole, 23-Second sliding lock hole, 24-Limiting block, 25-Sliding groove;

[0043] 21-Matching joint body, 211-Front cavity, 212-Rear cavity, 213-Baffle plate, 214-Guide groove;

[0044] 22-First sliding lock hole, 221-First limiting surface;

[0045] 23-Second sliding lock hole, 231-Second limiting surface;

[0046] 3-Pendulum assembly, 31-Front pendulum, 32-Front pendulum retaining pin, 33-Rear pendulum, 34-Rear pendulum retaining pin;

[0047] 31-Front pendulum, 311-First eccentric end, 312-First locking end, 313-First fixing hole, 314-First guide surface;

[0048] 33-Rear pendulum, 331-Second eccentric end, 332-Second locking end, 333-Second fixing hole, 334-Second guide surface;

[0049] 4-Drive head, 41-Drive head body, 42-Sliding block;

[0050] 5-Disassembly and assembly frame, 51-Main body, 52-Lifting connector, 53-Limiting groove, 54-Unlocking groove. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Please refer to Figures 1-10The first embodiment of the present invention provides a quick-connect fitting device, which includes a fixed fitting 1, a mating fitting, a pendulum assembly 3, a drive head, a disassembly / assembly bracket, and an unlocking key. The fixed fitting 1 includes a fixed fitting body 11, a first locking hole 12, a first locking adjustment hole, a second locking hole, and a second locking adjustment hole; the mating fitting includes a mating fitting body 21, a first sliding lock hole, a second sliding lock hole, a limiting block, and a sliding groove; the mating fitting body 21 includes a front cavity 211, a rear cavity 212, a partition 213, and a guide groove 214; the first and second sliding lock holes have limiting surfaces; the pendulum assembly 3 includes a front pendulum 31, a front pendulum fixing pin 32, a rear pendulum 33, and a rear pendulum fixing pin. Pin 34; front pendulum 31 and rear pendulum 33 include a weighted end, a locking end, a fixing hole, and a guide surface; front pendulum 31 includes a first weighted end 311, a first locking end 312, a first fixing hole 313, and a first guide surface 314, and rear pendulum 33 includes a second weighted end 331, a second locking end 332, a second fixing hole 333, and a second guide surface 334; drive head 4 includes drive head body 41 and sliding block 42; disassembly frame 5 includes body 51, lifting joint 52, limit groove 53, and unlocking groove 54.

[0053] The first locking hole 12 and the first locking adjustment hole are arranged vertically on one side of the fixed connector body 11, and the second locking hole and the second locking adjustment hole are arranged vertically on the other side of the fixed connector body 11. The locking holes arranged on both sides of the fixed connector body 11 are also staggered in the front-back direction.

[0054] The first sliding lock hole is located in the front cavity 211, and the second sliding lock hole is located in the rear cavity 212. The first sliding lock hole can coincide with the first locking hole 12 and the first locking adjustment hole through vertical movement. The second sliding lock hole can coincide with the second locking hole and the second locking adjustment hole through vertical movement. When the sliding lock hole and the locking hole are connected, corresponding adjustment holes are preset to ensure the success rate of connection.

[0055] The front pendulum fixing pin 32 connects the front pendulum 31 to the front cavity 211 through the fixing hole, and the rear pendulum fixing pin 34 connects the rear pendulum 33 to the rear cavity 212 through the fixing hole. The front pendulum 31 can rotate through the first sliding lock hole along the front pendulum fixing pin 32, and the rear pendulum 33 can rotate through the second sliding lock hole along the rear pendulum fixing pin 34.

[0056] The locking ends of the front pendulum 31 and the rear pendulum 33 are in contact with the limiting surface. The presence of the limiting surface makes the unbalanced end and the locking end reach a balanced state. The limiting surface includes a first limiting surface 221 and a second limiting surface 231.

[0057] The drive head is connected to the docking joint via a sliding block. The drive head body can move along the guide groove 214 of the docking joint body 21, while the sliding block can slide along the sliding groove of the docking joint body 21.

[0058] The limiting block of the docking joint can slide within the limiting groove of the disassembly and assembly frame; the disassembly and assembly frame can slide along the partition plate 213 of the docking joint body 21; the unlocking key can be inserted into the unlocking groove of the disassembly and assembly frame. When the unlocking key is inserted into the unlocking groove, it can simultaneously contact the sliding block of the drive head and push the sliding block to slide along the sliding groove.

[0059] This invention can be widely applied to the connection process of automated mechanical equipment. This embodiment focuses on describing the self-locking and unlocking process of high-altitude connection.

[0060] The self-locking process mainly consists of two steps: target entry and locking.

[0061] Before the self-locking process, there is a logical initial state: the drive head is stationary at the lower end of the sliding groove 25 via the sliding block; the locking ends of the front pendulum 31 and the rear pendulum 33 are in contact with the limiting surface, which includes the first limiting surface 221 and the second limiting surface 231, and is fixed to the docking joint body 21 by the fixing pin, so that the pendulum's unbalanced end and the locking end reach a balanced and static state relative to the docking joint body 21. The above logical initial state is only affected by gravity.

[0062] Specifically, the target entry process involves the crane connecting to the lifting joint and the disassembly frame, with the main body sliding along both sides of the partition 213 until the limiting groove and the limiting block 24 come into contact. At this point, the disassembly frame drives the docking joint to move towards the fixed joint through the limiting block 24 until the docking joint smoothly enters the fixed joint. This process is called target entry.

[0063] Specifically, the locking mechanism first defines the initial locking position as the contact between the current pendulum 31 and the rear pendulum 33 with the lower end of the fixed connector. As the mating connector continues to enter the fixed connector body 11, the front pendulum 31 rotates into the front cavity 211, and the rear pendulum 33 rotates into the rear cavity 212. When the first sliding lock hole 22 coincides with the first locking hole 12 or the first locking adjustment hole 13, and the second sliding lock hole 23 coincides with the second locking hole 14 or the second locking adjustment hole 15, the front pendulum 31 and the rear pendulum 33 return to their initial positions. Initial position; the crane moves along the direction of gravity, and the docking joint is pulled out along the direction of gravity under the action of gravity, so that the locking ends of the front pendulum 31 and the rear pendulum 33 contact the first locking hole 12 (or the first locking adjustment hole 13) and the second locking hole 14 (or the second locking adjustment hole 15) of the fixed joint body 11 respectively, the limiting groove and the limiting block 24 separate, and the disassembly frame can be completely detached from the docking joint. At this time, the initial state of the pendulum becomes the locked state, and its locked state is determined by the limiting surface of the pendulum fixing pin, the locking hole and the sliding lock hole.

[0064] The unlocking process mainly consists of three steps: inserting the unlocking device, separating and unlocking, and retracting the target.

[0065] Specifically, the insertion unlocking device involves inserting the unlocking key into the unlocking slot of the disassembly frame. The crane connects to the disassembly frame via a lifting joint and lifts the disassembly frame body. The body slides along both sides of the partition 213 until the unlocking key and the drive head sliding block come into contact. At this point, the limiting slot and the limiting block 24 do not come into contact.

[0066] Specifically, the separation and unlocking process involves the unlocking key pushing the drive head sliding block to slide along the sliding groove 25 until the drive head contacts the guide surfaces of the front pendulum 31 and the rear pendulum 33. The drive head then rotates along the guide surfaces to the front pendulum 31 and the rear pendulum 33 to the front cavity 211 and the rear cavity 212, respectively. At this point, the front pendulum 31 and the rear pendulum 33 do not contact the fixed joint or the docking joint.

[0067] Specifically, the target removal process involves the crane pushing out along the separation direction, i.e., the direction of gravity of the docking joint, after the fixed joint and the docking joint are completely separated, thus unlocking the target removal process. When the sliding block contacts the upper end of the sliding groove 25, the limiting groove and the limiting block 24 contact each other. The former ensures that the front pendulum 31 and the rear pendulum 33 will not rotate, and the latter ensures that there is no relative movement between the docking joint body 21 and the pendulum. These two features ensure that the fixed joint and the docking joint are completely separated during the target removal process.

[0068] Preferably, the present invention is not limited to the process described above, i.e., the fixed joint and the butt joint are perpendicular to the horizontal plane. The automatic docking process can also be at a certain angle to the horizontal plane, which can be freely selected within the range of 0°-180°. The automatic docking process at an angle requires the addition of a drag-reducing centering block on the inner surface of the fixed joint. Its function is to ensure that all locking holes and sliding locking holes are aligned, and to reduce the frictional resistance when the fixed joint and the butt joint move relative to each other.

[0069] Any technical modifications made by those skilled in the art, such as increasing the success rate of locking (target entry) by adding chamfers, cones, conical surfaces, or other structures, or increasing the success rate of unlocking (target withdrawal) by adding various drag reduction, alignment, guidance, and centering mechanisms, are within the scope of protection of this invention.

[0070] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A quick-connect coupling device, characterized in that, The system includes a fixed connector, a docking connector, a pendulum assembly, a drive head, a disassembly / assembly frame, and an unlocking key. The fixed connector includes a fixed connector body, a first locking hole, a first locking adjustment hole, a second locking hole, and a second locking adjustment hole. The docking connector includes a docking connector body, a first sliding lock hole, a second sliding lock hole, a limiting block, and a sliding groove. The docking connector body includes a front cavity, a rear cavity, a partition, and a guide groove. Limiting surfaces are present in the first and second sliding lock holes. The pendulum assembly includes a front pendulum, a front pendulum fixing pin, a rear pendulum, and a rear pendulum fixing pin. The front and rear pendulums include an eccentric end, a locking end, a fixing hole, and a guide surface. The drive head includes a drive head body and a sliding block. The disassembly / assembly frame includes a main body, a lifting connector, a limiting groove, and an unlocking groove. The first locking hole and the first locking adjustment hole are arranged vertically on one side of the fixed connector body, and the second locking hole and the second locking adjustment hole are arranged vertically on the other side of the fixed connector body. The locking holes arranged on both sides of the fixed connector body are also staggered in the front-back direction. The first sliding lock hole is distributed in the front cavity, and the second sliding lock hole is distributed in the rear cavity. The first sliding lock hole can coincide with the first locking hole and the first locking adjustment hole through vertical movement. The second sliding lock hole can coincide with the second locking hole and the second locking adjustment hole through vertical movement. When the sliding lock hole and the locking hole are connected, corresponding adjustment holes are preset to ensure the success rate of connection. The front pendulum fixing pin connects the front pendulum to the front cavity through a fixing hole, and the rear pendulum fixing pin connects the rear pendulum to the rear cavity through a fixing hole. The front pendulum rotates along the front pendulum fixing pin and passes through the first sliding lock hole, and the rear pendulum rotates along the rear pendulum fixing pin and passes through the second sliding lock hole. The locking ends of the front and rear pendulums are in contact with the limiting surface, which includes a first limiting surface and a second limiting surface. The drive head is connected to the docking joint via a sliding block. The drive head body can move along the guide groove of the docking joint body, while the sliding block can slide along the sliding groove of the docking joint body. The docking connector limiting block can slide within the limiting groove of the disassembly and assembly frame; the disassembly and assembly frame slides along the partition plate of the docking connector body; the unlocking key can be inserted into the unlocking groove of the disassembly and assembly frame. When the unlocking key is inserted into the unlocking groove, it simultaneously contacts the sliding block of the drive head and pushes the sliding block to slide along the sliding groove.

2. A method of operating the quick-connect coupling device according to claim 1, characterized in that, Includes the following steps: Includes the self-locking process and the unlocking process: The self-locking process mainly consists of two steps: target entry and locking. The unlocking process mainly consists of three steps: inserting the unlocking device, separating the unlocking mechanism, and removing the target. Before the self-locking process, there is a logical initial state: the drive head is stationary at the lower end of the sliding groove through the sliding block; the locking ends of the front and rear pendulums are in contact with the limiting surface and are fixed to the docking joint body by the fixing pin, so that the weighted end and the locking end of the pendulum reach a balanced and static state relative to the docking joint body. The above logical initial state is only affected by gravity.

3. The operating method of the quick-connect coupling device according to claim 2, characterized in that, The aforementioned target entry is when the crane is connected to the lifting joint and the disassembly frame, and the main body slides along both sides of the partition until the limiting groove and the limiting block contact. At this time, the disassembly frame drives the docking joint to move towards the fixed joint through the limiting block until the docking joint smoothly enters the fixed joint. This process is called target entry. The locking mechanism is defined as follows: First, the initial locking position is defined as the contact between the current pendulum and the rear pendulum and the lower end of the fixed joint. As the docking joint continues to enter the fixed joint body, the front pendulum rotates into the front cavity and the rear pendulum rotates into the rear cavity. When the first sliding lock hole coincides with the first locking hole or the first locking adjustment hole, and the second sliding lock hole coincides with the second locking hole or the second locking adjustment hole, the front and rear pendulums return to their initial positions. The crane moves along the direction of gravity, and the docking joint is pulled out along the direction of gravity under the action of gravity, so that the locking ends of the front and rear pendulums contact the first and second locking holes of the fixed joint body, respectively. The limiting groove and the limiting block separate, and the disassembly frame can be completely detached from the docking joint. At this time, the initial state of the pendulum becomes the locked state, and its locking state is determined by the pendulum fixing pin, the locking hole, and the limiting surface of the sliding lock hole. The aforementioned insertion unlocking device involves inserting the unlocking key into the unlocking slot of the disassembly frame. The crane connects to the disassembly frame via a lifting joint and lifts the disassembly frame body. The body slides along both sides of the partition until the unlocking key and the sliding block of the drive head come into contact. At this point, the limiting slot and the limiting block do not come into contact. The aforementioned separation and unlocking involves the unlocking key pushing the drive head sliding block to slide along the sliding groove until the drive head contacts the guide surfaces of the front and rear pendulums. The drive head then rotates along the guide surfaces to make the front and rear pendulums rotate back to the front and rear cavities, respectively. At this point, the front and rear pendulums do not contact the fixed joint or the mating joint. The aforementioned target removal process involves the crane pushing out along the separation direction, i.e., the direction of gravity of the docking joint, after the fixed joint and the docking joint are completely separated, thus unlocking the target removal process. When the sliding block contacts the upper end of the sliding groove, the limiting groove and the limiting block also contact each other. The former ensures that the front and rear pendulums will not rotate, and the latter ensures that there is no relative movement between the docking joint body and the pendulums. These two features ensure the complete separation of the fixed joint and the docking joint during the target removal process.

4. The operating method of the quick-connect coupling device according to claim 2, characterized in that, The automatic docking process of the joint is at a certain angle to the horizontal plane, and the angle ranges from 0° to 180°. The automatic docking process at an angle requires the addition of a drag-reducing centering block on the inner surface of the fixed joint.

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