Oil pipe rack locking device and method

Abstract

The invention belongs to the technical field of oil pipe racks, and discloses an oil pipe rack locking device and method. The oil pipe rack locking device comprises a locking ring, a shell, a pressing plate assembly and an elastic component. A sliding groove and a connecting sliding block are arranged in the shell, the bottoms of the shell are communicated with each other, the two ends of the sliding groove are fixedly connected with the shell, the connecting sliding block is arranged in the sliding groove and movably connected with the sliding groove, the elastic component is arranged on one side of the connecting sliding block, one end of the elastic component is fixedly connected with the connecting sliding block, and the other end of the elastic component is fixedly connected with the locking ring. The pressing plate assembly is arranged at the upper end of the sliding groove and connected with the connecting sliding block in a clamped mode, one end of the locking ring penetrates through the upper end of the shell, the oil pipe is installed at the upper end of the pressing plate assembly and locked through the locking ring, and the technical problems that an existing horizontal racking pipe is large in occupied area, and the oil pipe cannot move are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil pipe racks, and relates to an oil pipe rack locking device and method. BACKGROUND

[0002] An oil pipe is a pipeline used for transporting crude oil and natural gas from an oil and gas layer to the ground surface after drilling is completed. The oil pipe can withstand the pressure generated during the mining process. Since the oil pipe is large in size, a large area of the site needs to be occupied.

[0003] A patent application with Chinese patent application number 202123402999.7 discloses an oil pipe basket, which comprises a base, an anti-falling fixing frame and a plurality of oil pipe racks. The oil pipe racks are welded on the main beam of the base. The base is provided with lifting lugs. The side surfaces of the oil pipe racks are provided with a plurality of inclined clamping sites. The anti-falling fixing frame is arranged between the oil pipe racks. However, the oil pipes are horizontally installed on the oil pipe racks to form a horizontal pipe bank. The horizontal pipe bank has the disadvantages of large occupied area and immovable oil pipes.

[0004] A patent application with Chinese patent application number 202110413612.3 discloses an intelligent pipe bank device, which comprises a drill pipe box, two opposite sides of the drill pipe box are respectively provided with guide rails, a plurality of work station identification holes are arranged on the top ends of the guide rails along the length direction of the guide rails; a mobile crane is arranged, the two ends of the mobile crane are respectively arranged on the two guide rails, a fixed plate of the mobile crane is provided with a first proximity switch sensor corresponding to the work station identification holes; a sliding mechanism is slidably connected to the cross beam of the mobile crane; a lifting drill pipe grabbing mechanism is arranged on the sliding mechanism, and the lifting drill pipe grabbing mechanism is provided with a second proximity switch sensor; and a control box is electrically connected to the above-mentioned electrical elements. The device has a small occupied area, but cannot fix the oil pipes. Therefore, it is necessary to design an oil pipe fixing device with a small occupied area, which can vertically arrange and fix the oil pipes to prevent the oil pipes from overturning. SUMMARY

[0005] In view of the deficiencies of the prior art, the oil pipe rack locking device and method provided by the present application can be used to solve the technical problems of large occupation area of the existing horizontal pipe rack, immobility of the oil pipe and inability to fix the oil pipe, and the like.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The present application provides an oil pipe rack locking device, which comprises a locking ring, a shell, a pressing plate assembly and an elastic component.

[0008] Further, the device further comprises a mounting base, an electromagnet and a sliding assembly.

[0009] Further, the device further comprises an upper limiting baffle and a lower limiting baffle.

[0010] Further, the upper limiting baffle is concave, and the locking ring is a semicircular ring.

[0011] Furthermore, an elastic component is provided on the other side of the connecting slider, one end of which is fixedly connected to the connecting slider and the other end is fixedly connected to the transmission rod.

[0012] Furthermore, the pressure plate assembly includes a pressure plate and a pressure plate spring;

[0013] The pressure plate is disposed between the upper ends of two adjacent outer shells and is fixedly connected to the lower end of the outer shell by a pressure plate spring. The pressure plate spring is disposed at the lower end of the pressure plate, with one end fixedly connected to the pressure plate and the other end fixedly connected to the outer shell.

[0014] Furthermore, the connecting slider is provided with a groove; the groove is adapted to the pressure plate assembly and engages with the pressure plate assembly.

[0015] Furthermore, the outer shell is provided with a first limiting groove, a second limiting groove, and a third limiting groove; the second limiting groove is disposed at the upper end of the third limiting groove, the second limiting groove and the third limiting groove are located on the same side, and the first limiting groove is disposed on one side of the second limiting groove and is located at the upper end of the second limiting groove.

[0016] Furthermore, the number and position of the locking ring, pressure plate assembly, and elastic component can be adjusted according to the actual situation.

[0017] The present invention also provides a method for locking an oil pipe rack, comprising: sequentially connecting a locking ring, a housing, a pressure plate assembly and an elastic component; placing an oil pipe on the pressure plate assembly; moving the pressure plate assembly downward and engaging with a connecting slider, thereby locking the oil pipe; moving the oil pipe upward by a robotic arm and separating it from the pressure plate assembly; the pressure plate assembly returning to its original state; and under the action of the elastic component, moving the locking ring and the connecting slider to the left, thereby removing the oil pipe by the robotic arm.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This invention discloses a tubing rack locking device. When there is no tubing, an electromagnet is energized, its magnetic poles are adjusted to attract a permanent magnet, causing a connecting rod to move to the left. A transmission rod, via an elastic component, drives a connecting slider, which in turn, via the elastic component, rotates a locking ring, opening the unit. Conversely, when the electromagnet discharges, its magnetic poles are adjusted to repel the permanent magnet, causing the connecting rod to move to the right and the locking ring to rotate, closing the unit. When there is tubing, a pressure plate moves downwards and engages with a groove in the connecting slider. An electromagnet is energized, its magnetic poles are adjusted to attract the permanent magnet, causing the connecting rod to move to the left. The connecting slider, being held in place by the pressure plate, cannot move and therefore cannot be opened. When the tubing is placed on a single pressure plate, the tubing storage switch can be controlled independently, unaffected by other pressure plates.

[0020] This invention discloses a tubing rack locking device, in which an electromagnet, a permanent magnet, a transmission rod, and a connecting rod constitute a control circuit, and a pressure plate, a pressure plate spring, a connecting slider, an elastic component, an upper limit baffle, and a lower limit baffle constitute a storage unit. One control circuit can simultaneously control the switching of multiple storage units. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a tubing rack locking device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the oil pipe rack locking device in an embodiment of the present invention.

[0023] Figure label:

[0024] 1-Locking ring; 2-Outer shell; 21-Sliding groove; 22-Connecting slider; 221-Groove; 23-First limiting groove; 24-Second limiting groove; 25-Third limiting groove; 3-Pressure plate assembly; 31-Pressure plate; 32-Pressure plate spring; 4-Elastic component; 5-Electromagnet; 6-Sliding assembly; 61-Permanent magnet; 62-Transmission rod; 63-Connecting rod; 64-Upper limit baffle; 65-Lower limit baffle. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] Example 1

[0027] This invention provides a tubing rack locking device, such as... Figure 1 As shown, it includes a locking ring 1, a housing 2, a pressure plate assembly 3, an elastic component 4, an electromagnet 5, and a sliding assembly 6. The housing 2 is composed of multiple convex structures. The lower end is composed of multiple first rectangles, each with a hollow interior and adjacent first rectangles are interconnected, and is placed horizontally on the ground. The upper end is composed of multiple second rectangles, each with a hollow interior, and is placed vertically on top of the first rectangles. The first and second rectangles on the same horizontal line are interconnected. In this embodiment, three second rectangles are used as an example, but the number can be increased or decreased accordingly in actual situations.

[0028] The second rectangle is provided with a first limiting groove 23, a second limiting groove 24, and a third limiting groove 25. The first limiting groove 23 is located on the left side of the second rectangle, and the second limiting groove 24 and the third limiting groove 25 are located on the right side of the second rectangle. It should be noted that the leftmost part of the second rectangle does not have the first limiting groove 23, the second limiting groove 24, and the third limiting groove 25. At the same time, the heights of the first limiting groove 23, the second limiting groove 24, and the third limiting groove 25 gradually decrease.

[0029] The first rectangle contains a sliding groove 21 and a connecting slider 22. The two ends of the sliding groove 21 are fixedly connected to the two ends of the first rectangle on the same horizontal line. A fixed connection refers to a connection where the parts or components are fixed without any relative movement. It is divided into detachable and non-detachable connections. Detachable connections use screws, splines, wedges, etc., to fix components together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct, such as the length of the bolts, keys, and wedges, and they must be properly tightened. Non-detachable connections mainly refer to welding, riveting, and tenon joints. Because forging, sawing, or oxy-acetylene cutting is required for disassembly during maintenance or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures during connection, such as correction and polishing. The fixed connection here is welding.

[0030] The connecting slider 22 is set in the sliding groove 21 and can move left and right. When the connecting slider 22 moves, the locking ring 1 moves in the same direction as the connecting slider 22.

[0031] Electromagnet 5 is positioned on the far left within the second rectangle, at the lower end of the sliding groove 21. Electromagnet 5 is a device that generates electromagnetism when energized. A conductive winding matching its power is wound around the outside of the iron core; this winding is typically made in a bar or horseshoe shape to facilitate magnetization of the iron core. Furthermore, to ensure that electromagnet 5 demagnetizes immediately upon de-energization, it is often made of soft iron or silicon steel, which demagnetizes quickly. Such an electromagnet 5 exhibits magnetism when energized, and the magnetism disappears when the power is de-energized.

[0032] A sliding assembly 6 is provided on one side of the electromagnet 5, specifically on its right side. The sliding assembly 6 includes a permanent magnet 61, a transmission rod 62, a connecting rod 63, and a baffle. The permanent magnet 61, connecting rod 63, and electromagnet 5 are located on the same horizontal line, and the permanent magnet 61 and connecting rod 63 are integrated. The permanent magnet 61 does not require an external power source or current to maintain its operation. This is because the electron spins inside the permanent magnet 61 can spontaneously align within a small range, forming a spontaneously magnetized region called a magnetic domain. The magnetic moments of these domains are arranged in a regular pattern, thus constituting a ferromagnetic material. When subjected to an external magnetic field, the magnetic moments of these domains change direction, causing the permanent magnet 61 to become magnetized.

[0033] The connecting rod 63 is equipped with multiple transmission rods 62 and baffles. The number of transmission rods 62 and baffles matches the number of locking rings 1. The transmission rods 62 are located at the upper end of the connecting rod 63, and their bottoms are fixedly connected to the connecting rod 63 by welding. It should be noted that the axis of the transmission rod 62 is perpendicular to the axis of the connecting rod 63. Each oil pipe storage unit includes a locking ring 1, a pressure plate assembly 3, a connecting slider 22, a transmission rod 62, and a baffle. The oil pipe is placed on the pressure plate assembly 3 and engages with the groove 221 on the connecting slider 22, which enables control of a single oil pipe storage unit. Locking or opening the current oil pipe storage unit does not affect other units. The baffle includes an upper limit baffle 64 and a lower limit baffle 65. The upper limit baffle 64 is located at the upper end of the connecting rod 63, and the lower limit baffle 65 is located at the lower end of the connecting rod 63. The upper limit baffle 64 is concave in shape, and the lower end of the upper limit baffle 64 and the upper end of the lower limit baffle 65 are slidably connected to the connecting rod 63, respectively. The concave upper limit baffle 64 has the characteristics of high stability, accurate positioning, strong adaptability, and safety and reliability. High stability: It provides a larger contact area and a more stable support structure, which helps to reduce vibration and impact; accurate positioning: It ensures that the locking ring 1 is accurately positioned at a specific position, reducing errors and deviations; strong adaptability: It can adapt to objects of different shapes and sizes, and has strong versatility and flexibility; safety and reliability: It ensures stability and safety under harsh working conditions.

[0034] The distance between the permanent magnet 61 and the transmission rod 62 is a fixed value, and the distance between the transmission rod 62 and the upper limit baffle 64 is determined by the connecting slider 22 and the two elastic components 4.

[0035] Elastic components 4 are provided on both sides of the connecting slider 22. Elastic components 4 are components capable of changing their shape or size and returning to their original state. In mechanical equipment, elastic components 4 can not only withstand loads in different directions, but also adjust the movement of the system, achieve gap sealing, and reduce vibration, among other functions. Elastic components 4 are typically made of elastic materials, such as metal springs, rubber seals, and elastic hangers. In this embodiment, the elastic component 4 is a connecting spring. One end of the elastic component 4 located on the left side of the connecting slider 22 is fixedly connected to the slider 22, and the other end is fixedly connected to the transmission rod 62. This fixed connection can be achieved by welding. One end of the elastic component 4 located on the right side of the connecting slider 22 is fixedly connected to the connecting slider 22, and the other end is fixedly connected to the locking ring 1. This fixed connection can also be achieved by welding, and adjustments can be made according to the actual situation. A groove 221 is provided on the connecting slider 22, and the shape of the groove 221 is adapted to the pressure plate 31.

[0036] The pressure plate assembly 3 includes a pressure plate 31 and a pressure plate spring 32. The pressure plate 31 is T-shaped, and the pressure plate spring 32 is sleeved under the pressure plate 31, with one end welded to the pressure plate 31 and the other end welded to the outer shell 2. The upper end of the pressure plate 31 is used to install an oil pipe. If an oil pipe is placed on the upper end of the pressure plate 31, the lower end passes through the outer shell 2 and engages with the groove 221 on the connecting slider 22; if no oil pipe is placed on the pressure plate 31, the lower end only passes through the outer shell 2 and does not engage with the groove 221.

[0037] The locking ring 1 passes through the third limiting groove 25, the second limiting groove 24, and the first limiting groove 23 from bottom to top. If the electromagnet 5 and the permanent magnet 61 attract each other, the transmission rod 62 moves to the left following the permanent magnet 61. Since the transmission rod 62 is connected to the connecting slider 22 through the elastic component 4, and the connecting slider 22 is connected to the locking ring 1 through the elastic component 4, when the permanent magnet 61 moves to the left, the locking ring 1 also moves downward, changing its position. The locking ring 1, located on the lower side, moves from the right side of the upper limit baffle 64 to the left side.

[0038] Example 2

[0039] A method for locking an oil pipe rack includes the following steps: connecting a locking ring 1, a housing 2, a pressure plate assembly 3, and an elastic component 4 in sequence; placing the oil pipe on the pressure plate assembly 3; moving the pressure plate assembly 3 downwards and engaging with the connecting slider 22, thus locking the oil pipe; moving the oil pipe upwards via a robotic arm and separating it from the pressure plate assembly 3; restoring the pressure plate assembly 3 to its original state; and under the action of the elastic component 4, moving the locking ring 1 and the connecting slider 22 to the left, allowing the robotic arm to remove the oil pipe.

[0040] Specifically: such as Figure 2 As shown, there are two locking rings 1. The left side shows a structural diagram without oil pipes, and the right side shows a structural diagram with oil pipes, provided that the electromagnet 5 is energized. Taking the left locking ring 1 as an example, when the electromagnet 5 is energized, the permanent magnet 61 attracts the electromagnet 5. When the permanent magnet 61 approaches the electromagnet 5, since the distance between the permanent magnet 61 and the transmission rod 62 is fixed, the transmission rod 62 separates from the upper limit baffle 64, and the distance between them gradually increases, determined by the connecting slider 22 and the spring components 4 on both sides. The transmission rod 62 drives the connecting slider 22 to move on the sliding groove 21 through the elastic component 4. When the connecting slider 22 moves, the elastic component 4 drives the locking ring 1 to move in the same direction. The upper limit baffle 64 ensures that the locking ring 1 runs within a preset track or area, preventing it from exceeding the predetermined upper limit position during movement through physical blocking, thereby protecting the entire device from damage.

[0041] The connecting slider 22 refers to a slider assembly used in mechanical structures or molds for connecting, transmitting, or realizing specific motion functions. Depending on the function of the application scenario, the connecting slider 22 can be divided into various types, such as linear guide sliders, mold sliders, and cross slider couplings. In this embodiment, it is a linear guide slider, which, through cooperation with the sliding groove 21, enables the smooth and precise movement of the object.

[0042] As can be seen from the right-hand diagram, the oil pipe is installed on the pressure plate 31. Under the action of gravity, the pressure plate spring 32 is compressed. The lower end of the pressure plate 31 is in contact with the upper end face of the groove 221. The second transmission rod 62 from the left also moves to the left. Since the connecting slider 22 is pressed down, the elastic component 4 located on the left side of the connecting slider 22 is stretched. The elastic component 4 located on the right side of the connecting slider 22 does not move, so the locking ring 1 does not change displacement.

[0043] like Figure 1 As shown, if electromagnet 5 is discharged, taking the left locking ring 1 as an example, since electromagnet 5 is discharged, permanent magnet 61 and electromagnet 5 repel each other, and permanent magnet 61 and connecting rod 63 move to the right. Since the distance between transmission rod 62 and permanent magnet 61 is constant, and locking ring 1 is... Figure 2 The position of the left side of the middle is changed to Figure 1 In the left-hand position, the spring component 4 is compressed. If an oil pipe is placed on the pressure plate 31, the locking ring 1 will not change position.

[0044] A connecting rod 63 is a mechanical component used to connect and secure different parts or devices. It is typically made of metal or high-strength plastic materials, including stainless steel, titanium alloy, aluminum alloy, and high-strength alloy steel, to ensure sufficient strength and durability. When selecting a connecting rod 63, the appropriate type should be chosen based on the specific application scenario and functional requirements. According to its shape and connection method, connecting rods 63 can be divided into various types such as cylindrical, flat, and angled, and the connection method can be divided into fixed and movable connections. For example, a cylindrical shape should be selected for applications requiring the transmission of axial forces; a flat or angled shape can be selected for applications requiring the transmission of lateral or bending forces.

[0045] In summary, when there is no oil pipe, electromagnet 5 is energized, and its magnetic pole direction is adjusted to attract permanent magnet 61, causing connecting rod 63 to move to the left. Transmission rod 62 drives connecting slider 22 through elastic component 4, and connecting slider 22 drives locking ring 1 to rotate through elastic component 4, opening the unit. Electromagnet 5 discharges, and its magnetic pole direction is adjusted to repel permanent magnet 61, causing connecting rod 63 to move to the right, causing locking ring 1 to rotate, closing the unit. When there is an oil pipe, pressure plate 31 moves downward and engages in groove 221 in connecting slider 22. Electromagnet is energized, and its magnetic pole direction is adjusted to attract permanent magnet 61, causing connecting rod 63 to move to the left. Connecting slider 22 cannot move because it is stuck by pressure plate 31, thus preventing it from opening. When the oil pipe is placed on one pressure plate 31, the oil pipe storage switch can be controlled independently, unaffected by other pressure plates 31. In the field of machining, pressure plate 31 is widely used in metal processing, plastic processing, woodworking and other fields to fix parts, adjust the shape or size of objects, and provide support and stability for other processes. In this embodiment, pressure plate 31 is used to place oil pipes.

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

Claims

1. A tubing hanger locking device, characterized in that: comprising a locking ring (1), a shell (2), a pressing plate assembly (3) and a resilient component (4); the shell (2) is internally provided with a sliding groove (21) and a connecting sliding block (22), the bottom of the shell (2) is in communication with each other, the two ends of the sliding groove (21) are fixedly connected with the shell (2), the connecting sliding block (22) is arranged in the sliding groove (21) and movably connected with the sliding groove (21), the resilient component (4) is arranged on one side of the connecting sliding block (22), one end of which is fixedly connected with the connecting sliding block (22), and the other end is fixedly connected with the locking ring (1), the pressing plate assembly (3) is arranged on the upper end of the sliding groove (21) and is clamped with the connecting sliding block (22), one end of the locking ring (1) penetrates through the upper end of the shell (2), and a tubing is mounted on the upper end of the pressing plate assembly (3) and is locked by the locking ring (1).

2. The tubing hanger locking device according to claim 1, characterized in that: further comprising an electromagnet (5) and a sliding assembly (6); the electromagnet (5) is arranged on one side of the bottom of the shell (2), and the sliding assembly (6) comprises a permanent magnet (61), a transmission rod (62), a connecting rod (63) and a baffle, the permanent magnet (61) is arranged on one side of the electromagnet (5), the connecting rod (63) is arranged on the side of the permanent magnet (61) away from the electromagnet (5) and is fixedly connected with the permanent magnet (61), the transmission rod (62) is arranged on the upper end of the connecting rod (63), and the baffle is arranged on both ends of the connecting rod (63).

3. The tubing hanger locking device according to claim 2, characterized in that: the baffle comprises an upper limiting baffle (64) and a lower limiting baffle (65); the upper limiting baffle (64) is arranged on the upper end of the connecting rod (63), the lower limiting baffle (65) is arranged on the lower end of the connecting rod (63), and the upper limiting baffle (64) is slidably connected with the connecting rod (63), and the lower limiting baffle (65) is slidably connected with the connecting rod (63).

4. The tubing hanger locking device according to claim 3, characterized in that: the upper limiting baffle (64) is concave, and the locking ring (1) is a semicircular ring.

5. The tubing hanger locking device according to claim 2, characterized in that: the other side of the connecting sliding block (22) is provided with a resilient component (4), one end of the resilient component (4) is fixedly connected with the connecting sliding block (22), and the other end is fixedly connected with the transmission rod (62).

6. The tubing hanger locking device according to claim 1, characterized in that: the pressing plate assembly (3) comprises a pressing plate (31) and a pressing plate spring (32); the pressing plate (31) is arranged between the upper ends of two adjacent shells (2) and is fixedly connected with the lower ends of the shells (2) through the pressing plate spring (32), the pressing plate spring (32) is arranged on the lower end of the pressing plate (31), one end of which is fixedly connected with the pressing plate (31), and the other end is fixedly connected with the shell (2).

7. The tubing hanger locking device according to claim 1, characterized in that: a groove (221) is arranged on the connecting sliding block (22). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The recess (221) is matched with the pressing plate assembly (3) and is clamped with the pressing plate assembly (3).

8. The tubing rack locking device according to claim 1, characterized in that: The outer shell (2) is provided with a first limiting recess (23), a second limiting recess (24) and a third limiting recess (25). The second limiting recess (24) is arranged at the upper end of the third limiting recess (25), the second limiting recess (24) and the third limiting recess (25) are located on the same side, the first limiting recess (23) is arranged on one side of the second limiting recess (24) and at the upper end of the second limiting recess (24).

9. The tubing rack locking device according to claim 1, characterized in that: The number and position of the locking ring (1), the pressing plate assembly (3) and the elastic component (4) can be adjusted according to actual conditions.

10. A tubing hanger locking method, characterized by, The tubing rack locking device according to any one of claims 1-9, comprising the following steps: The locking ring (1), the outer shell (2), the pressing plate assembly (3) and the elastic component (4) are sequentially connected, the tubing is placed on the pressing plate assembly (3), the pressing plate assembly (3) moves downward and is clamped with the connecting sliding block (22), and the tubing is locked; The tubing is moved upward by the mechanical hand and is separated from the pressing plate assembly (3), the pressing plate assembly (3) returns to the original state, under the action of the elastic component (4), the locking ring (1) and the connecting sliding block (22) move leftward, and the mechanical hand takes out the tubing.

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