Connecting mechanism with anti-falling structure for industrial communication

Abstract

This invention provides an industrial communication connection mechanism with an anti-detachment structure, belonging to the field of industrial communication equipment connection technology. The connection mechanism includes a base, a fixed adjustment box, a movable adjustment box, a clamping assembly, a spacing adjustment assembly, and a locking assembly. The clamping assembly is disposed on the fixed and movable adjustment boxes and can move synchronously towards or away from each other to achieve automatic centering and clamping of cables of different diameters. The spacing adjustment assembly is disposed between the fixed and movable adjustment boxes and is used to drive the movable adjustment box to move to adjust the mating distance at the cable ends. The locking assembly includes sleeves, a threaded connection pair disposed between the two sleeves, and a radial locking mechanism disposed on the sleeves. The radial locking mechanism has a self-locking characteristic and can drive a radial limiting member to move synchronously inward to press and lock the outer periphery of the cable. This invention achieves automatic centering, precise docking, and anti-loosening locking of cables through the cooperation of clamping components, spacing adjustment components, and locking components. It effectively solves the problem of communication interruption caused by easy loosening of connection mechanisms in industrial vibration environments. It has the advantages of compact structure, convenient operation, high reliability, and strong versatility. It is particularly suitable for complex industrial scenarios with high frequency and strong vibration, such as metallurgy, mining, and rail transportation.

Description

Technical Field

[0001] This invention belongs to the field of industrial communication equipment connection technology, specifically an industrial communication connection mechanism with an anti-detachment structure. Background Technology

[0002] With the continuous improvement of industrial automation, industrial sites place extremely high demands on the stability and reliability of communication networks. As the "nerve vessels" of data transmission, the stability of industrial communication cables at their connection points directly affects the normal operation of the entire control system. In typical industrial scenarios such as metallurgy, mining, rail transportation, and large machinery manufacturing, equipment often experiences high-frequency, high-intensity mechanical vibrations, and the environmental conditions are complex, frequently accompanied by dust, oil contamination, and drastic changes in temperature and humidity.

[0003] Most current industrial communication connectors use snap-fit ​​or simple threaded locking for fixation. In complex working conditions such as metallurgy and mining, where there is high frequency and strong vibration, connectors that rely solely on the friction of the threaded pair for locking are prone to loosening due to vibration, causing the connector to disconnect spontaneously and resulting in communication interruption. At the same time, existing devices are difficult to be compatible with cables of different diameters and are prone to damage to the cable due to uneven force caused by the clamping mechanism with unilateral clamping. Summary of the Invention

[0004] The purpose of this invention is to provide an industrial communication connection mechanism with an anti-detachment structure, which solves the above-mentioned shortcomings of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides an industrial communication connection mechanism with an anti-detachment structure, comprising a base, wherein the base is provided with: A fixed adjustment box and a movable adjustment box that can move relative to the base are provided on the base. The fixed adjustment box and the movable adjustment box are respectively used to carry the ends of the two communication cables to be connected. The clamping components disposed on the fixed adjustment box and the movable adjustment box are configured to move synchronously in opposite directions or in opposite directions to achieve centering clamping of cables of different diameters. A spacing adjustment component is disposed between the fixed adjustment box and the movable adjustment box. The spacing adjustment component is configured to drive the movable adjustment box to move relative to the fixed adjustment box in order to adjust the docking distance between the ends of the two cables. The locking components, located on each clamping assembly, are configured to lock the ends of the two cables to be connected.

[0006] Preferably, the clamping assembly includes a bidirectional lead screw rotatably connected inside the fixed adjustment box and the movable adjustment box, and movable seats or movable blocks threadedly connected to both sides of the bidirectional lead screw respectively; one end of the bidirectional lead screw is connected to a handle for driving the bidirectional lead screw to rotate, so as to realize the equidistant opposite or opposite movement of the movable seats or movable blocks on both sides.

[0007] Preferably, an arc-shaped clamping plate is fixedly connected to the top of the movable seat on the fixed adjustment box, and an arc-shaped clamping rod is fixedly connected to the top of the movable block on the movable adjustment box; the arc-shaped clamping plate and the arc-shaped clamping rod are respectively used to clamp the ends of the two cables to be connected.

[0008] Preferably, the bidirectional lead screw is connected to the handle via a second worm gear assembly.

[0009] Preferably, the spacing adjustment assembly includes a threaded rod rotatably connected to the lower end of the base, and a threaded seat threadedly connected to the outer periphery of the threaded rod; the top of the threaded seat is fixedly connected to the bottom of the movable adjustment box; one end of the threaded rod is connected to a handle for driving the threaded rod to rotate, thereby pushing the movable adjustment box to slide horizontally on the base.

[0010] Preferably, the threaded rod is connected to the handle via a third worm gear assembly.

[0011] Preferably, the locking assembly includes sleeves respectively connected to the ends of the two mating cables, a threaded connection pair disposed between the two sleeves, and a radial locking mechanism disposed on the sleeves, wherein: The two sleeves are respectively fixed on the arc-shaped clamping plate of the fixed adjustment box and the arc-shaped clamping rod of the movable adjustment box; The threaded connection is used to axially tighten the two sleeves; The radial locking mechanism is used to press against and lock the outer periphery of the cable to prevent the threaded connection from loosening due to vibration.

[0012] Preferably, the threaded connection includes a threaded cylinder rotatably connected to one end of one of the sleeves, and a threaded groove disposed on the outer periphery of one end of the other sleeve; the inner side of the threaded cylinder is threadedly connected to the outer periphery of the threaded groove.

[0013] Preferably, the radial locking mechanism includes a housing fixedly connected to the outer periphery of each sleeve, a turntable rotatably connected inside each housing, a first worm gear fixedly connected to one side of the turntable, a first worm gear drivingly connected to the outer side of the first worm gear, and a handle connected to one end of the first worm gear; the surface of the turntable is provided with a plurality of sliding grooves, a sliding column is slidably connected in each groove, a limit rod is fixedly connected to one side of each sliding column, and the limit rod is slidably connected to the outer periphery of the sleeve.

[0014] Preferably, there are three slide grooves and three limiting rods, with the three slide grooves evenly distributed circumferentially on the turntable surface and the three limiting rods evenly distributed circumferentially on the outer circumference of the sleeve, for achieving synchronous three-point radial locking of the cable.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention provides an industrial communication connection mechanism with an anti-detachment structure. By incorporating clamping components capable of synchronously moving in opposite directions, it achieves automatic centering and clamping of cables of different diameters, avoiding the problem of uneven force damage to the cable caused by traditional single-sided clamping methods, significantly improving the adaptability and reliability of clamping. Secondly, by setting up a locking component composed of a threaded connection pair and a radial locking mechanism, the threaded connection pair is responsible for axially tightening the two sleeves to achieve initial connection, while the radial locking mechanism, through a driving element, drives multiple radial limiters to move synchronously inward to press and lock the outer periphery of the cable. Furthermore, this radial locking mechanism has a self-locking characteristic, maintaining a radially locked state after the driving element stops, thereby effectively preventing the threaded connection pair from rotating and loosening due to high-frequency, strong vibrations in industrial environments, completely solving the problem of spontaneous disconnection of connectors in existing technologies. The design eliminates the defect of communication interruption caused by disconnection. Furthermore, the spacing adjustment component allows the movable adjustment box to move relative to the fixed adjustment box, flexibly adapting to communication cables of different lengths and specifications. Precise docking can be achieved without replacing connectors, greatly improving the mechanism's versatility and ease of on-site installation. Simultaneously, the clamping component, spacing adjustment component, and locking component work together to form a complete functional chain from cable clamping and fixing, end distance adjustment to docking anti-loosening locking. This ensures minimal physical contact resistance during communication cable connection to guarantee stable signal transmission, while also providing multiple anti-loosening safeguards in the mechanical structure. This significantly improves the long-term reliability and service life of the industrial communication connection mechanism under harsh working conditions. Moreover, the overall structure is compact and easy to operate, making it particularly suitable for complex industrial environments with high-frequency, high-vibration conditions, such as metallurgy, mining, and rail transportation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the mechanism involved in the embodiments of the present invention; Figure 2 This is a schematic diagram of the chute structure involved in an embodiment of the present invention; Figure 3 This is a schematic diagram of the threaded rod structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a bidirectional lead screw structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the threaded groove structure according to an embodiment of the present invention; In the diagram: 1. Base; 2. Fixed adjustment box; 3. Movable adjustment box; 4. Protective box; 5. Movable seat; 6. Arc-shaped clamping plate; 7. Movable block; 8. Arc-shaped clamping rod; 9. Sleeve; 10. Outer shell; 11. Threaded cylinder; 12. Threaded groove; 13. Turntable; 14. First worm gear; 15. First worm; 16. Handle; 17. Slide groove; 18. Slide column; 19. Limiting rod; 20. Two-way lead screw; 21. Second worm gear; 22. Second worm; 23. Handle; 24. Threaded rod; 25. Threaded seat; 26. Third worm gear; 27. Third worm; 28. Turning handle. Detailed Implementation

[0017] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0018] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0019] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0020] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0021] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0023] Example 1 This embodiment provides an industrial communication connection mechanism with an anti-detachment structure, including a base, on which: A fixed adjustment box and a movable adjustment box that can move relative to the base are provided on the base. The fixed adjustment box and the movable adjustment box are respectively used to carry the ends of the two communication cables to be connected. The clamping components disposed on the fixed adjustment box and the movable adjustment box are configured to move synchronously in opposite directions or in opposite directions to achieve centering clamping of cables of different diameters. A spacing adjustment component is disposed between the fixed adjustment box and the movable adjustment box. The spacing adjustment component is configured to drive the movable adjustment box to move relative to the fixed adjustment box in order to adjust the docking distance between the ends of the two cables. The locking components, located on each clamping assembly, are configured to lock the ends of the two cables to be connected.

[0024] In this embodiment, the clamping assembly includes a bidirectional lead screw rotatably connected to the inside of the fixed adjustment box and the movable adjustment box, and movable seats or movable blocks threadedly connected to both sides of the bidirectional lead screw respectively; one end of the bidirectional lead screw is connected to a handle for driving the bidirectional lead screw to rotate, so as to realize the equidistant opposite or opposite movement of the movable seats or movable blocks on both sides.

[0025] In this embodiment, an arc-shaped clamping plate is fixedly connected to the top of the movable seat on the fixed adjustment box, and an arc-shaped clamping rod is fixedly connected to the top of the movable block on the movable adjustment box; the arc-shaped clamping plate and the arc-shaped clamping rod are respectively used to clamp the ends of the two cables to be connected.

[0026] In this embodiment, the spacing adjustment assembly includes a threaded rod rotatably connected to the lower end of the base, and a threaded seat threadedly connected to the outer periphery of the threaded rod; the top of the threaded seat is fixedly connected to the bottom of the movable adjustment box; one end of the threaded rod is connected to a handle for driving the threaded rod to rotate, thereby pushing the movable adjustment box to slide horizontally on the base.

[0027] In this embodiment, the locking assembly includes sleeves respectively connected to the ends of the two mating cables, a threaded connection pair disposed between the two sleeves, and a radial locking mechanism disposed on the sleeves, wherein: The two sleeves are respectively fixed on the arc-shaped clamping plate of the fixed adjustment box and the arc-shaped clamping rod of the movable adjustment box; The threaded connection is used to axially tighten the two sleeves; The radial locking mechanism is used to press against and lock the outer periphery of the cable to prevent the threaded connection from loosening due to vibration.

[0028] In this embodiment, the threaded connection pair includes a threaded cylinder rotatably connected to one end of one of the sleeves, and a threaded groove disposed on the outer periphery of one end of the other sleeve; the inner side of the threaded cylinder is threadedly connected to the outer periphery of the threaded groove.

[0029] In this embodiment, the radial locking mechanism includes a housing fixedly connected to the outer periphery of each sleeve, a turntable rotatably connected inside each housing, a first worm gear fixedly connected to one side of the turntable, a first worm gear drivingly connected to the outer side of the first worm gear, and a handle connected to one end of the first worm gear; the surface of the turntable is provided with multiple sliding grooves, a sliding column is slidably connected in each sliding groove, a limit rod is fixedly connected to one side of each sliding column, and the limit rod is slidably connected to the outer periphery of the sleeve.

[0030] Example 2 like Figures 1-5 As shown, this embodiment provides an industrial communication connection mechanism with an anti-detachment structure, including a base 1. A fixed adjustment box 2 is fixedly connected to one side of the top of the base 1, and a movable adjustment box 3 is slidably connected to the other side of the top of the base 1. Protective boxes 4 are fixedly connected to the outer ends of both the fixed adjustment box 2 and the movable adjustment box 3. Movable seats 5 are symmetrically slidably connected to the upper ends of the fixed adjustment box 2. Arc-shaped clamping plates 6 are fixedly connected to the top of each movable seat 5, and the two arc-shaped clamping plates 6 are engaged.

[0031] The upper sides of the movable adjustment box 3 are symmetrically connected to movable blocks 7. The top of each movable block 7 is fixedly connected to an arc-shaped clamping rod 8. A sleeve 9 is fixedly connected to one side of the arc-shaped clamping plate 6 and the arc-shaped clamping rod 8.

[0032] Both sleeves 9 are fixedly connected to the outer periphery of the outer shell 10. One end of one sleeve 9 is rotatably connected to a threaded cylinder 11, and the outer periphery of one end of the other sleeve 9 is provided with a threaded groove 12. The inner side of the threaded cylinder 11 is threadedly connected to the outer periphery of the threaded groove 12. Through the screwing connection between the threaded cylinder 11 and the threaded groove 12, the two sleeves 9 can be tightly pulled together by utilizing the large lead angle or self-locking characteristics of the threaded pair, ensuring that the physical contact resistance of the connectors at both ends of the communication cable is minimized and the signal transmission is more stable.

[0033] The inner side of the outer shell 10 is rotatably connected to a turntable 13, and the inner side of the turntable 13 is rotatably connected to the outer circumference of the sleeve 9. A first worm wheel 14 is fixedly connected to one side of the turntable 13, and a first worm 15 is driven to the outer side of the first worm wheel 14. One end of the first worm 15 passes through the outer shell 10 and is fixedly connected to a handle 16. By utilizing the reverse self-locking characteristic of the transmission between the worm wheel 14 and the worm 15, when the handle 16 stops rotating, the worm wheel cannot drive the worm in the reverse direction.

[0034] The turntable 13 has three grooves 17 on its surface. Each groove 17 has a sliding column 18 slidably connected inside it. Each of the three sliding columns 18 has a limit rod 19 fixedly connected to one side. The three limit rods 19 are slidably connected to the outer circumference of the sleeve 9. By using the three grooves 17 and the three limit rods 19 in a circumferential distribution, the three limit rods 19 can be driven to move radially synchronously when the turntable 13 rotates.

[0035] Both the fixed adjustment box 2 and the movable adjustment box 3 are internally connected to a bidirectional lead screw 20. One end of the bidirectional lead screw 20 passes through the protective box 4 and is fixedly connected to a second worm gear 21. The outer side of the second worm gear 21 is connected to a second worm 22, and one end of the second worm 22 is fixedly connected to a handle 23. Through the left and right threads of the bidirectional lead screw 20, the movable seats 5 or movable blocks 7 on both sides can move towards each other or away from each other at equal distances when rotating. This ensures that the arc-shaped clamping plate 6 and the arc-shaped clamping rod 8 always move symmetrically relative to the center of the box, and can achieve automatic centering and clamping regardless of the thickness of the cable, avoiding damage to the cable due to uneven force.

[0036] The lower end of the base 1 is rotatably connected to a threaded rod 24, and the outer circumference of the threaded rod 24 is threadedly connected to a threaded seat 25. The top of the threaded seat 25 is fixedly connected to the bottom of the movable adjustment box 3. By rotating the threaded rod 24, the base distance between the fixed end and the movable end can be flexibly changed, thereby adapting to industrial communication cables of different lengths and specifications. There is no need to replace connectors of different sizes, making it highly versatile.

[0037] One end of the threaded rod 24 is fixedly connected to a third worm gear 26, and the outer periphery of the third worm gear 26 is connected to a third worm 27. One end of the third worm 27 is fixedly connected to a handle 28. The heavy mobile housing can be easily moved by the handle 28 without the need for power tools or hydraulic equipment, making it particularly suitable for rapid installation and maintenance in environments without power supply.

[0038] Working Principle: In use, first place both ends of the communication cable to be connected above the fixed adjustment box 2 and the movable adjustment box 3, respectively. By turning the handle 23, the bidirectional lead screw 20 inside the box rotates, causing the arc-shaped clamping plates 6 and arc-shaped clamping rods 8 on both sides to move towards each other, firmly clamping and fixing the two cables. Then, the operator turns the handle 28, which, through the transmission of the third worm gear 27 and the third worm wheel 26, drives the threaded rod 24 to rotate. Since the threaded seat 25 is fixedly connected to the movable adjustment box 3, the rotation of the threaded rod pushes the movable adjustment box 3 to slide horizontally on the base 1, thereby precisely adjusting the distance between the two connection ends and aligning the ends of the two cables. After alignment, insert the threaded sleeve 11 at one end of the sleeve 9 into the threaded groove 12 at the other end of the sleeve 9. By manually tightening the threaded sleeve 11 initially, the engagement of the threaded pair achieves axial tension of the two sleeves, completing the physical connection and initial fixation of the cables.

[0039] To ensure the connection remains secure under industrial vibration conditions, activate the anti-loosening locking procedure: The operator turns handle 16, causing the first worm gear 15 to rotate, which in turn drives the first worm wheel 14 and the turntable 13 to rotate. When the turntable 13 rotates, its three grooves 17 act as cam tracks, driving the internal sliding column 18 to retract radially inward. The sliding column 18 drives the limiting rod 19 to move synchronously, inserting it into the sleeve 9 and pressing it tightly against the outer circumference of the cable. At this time, due to the reverse self-locking characteristic of the worm gear mechanism, once the limiting rod 19 is locked in place, the turntable 13 cannot rotate in the opposite direction, thus completely "locking" the relative position of the threaded sleeve 11 and the threaded groove 12, preventing the threaded pair from rotating and loosening due to vibration. The limiting rod 19 provides a second mechanical safety, effectively preventing the connection mechanism from accidentally falling off and ensuring the long-term stability of the industrial communication connection.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such 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 this application, and should all be included within the protection scope of this application.

Claims

1. An industrial communication connection mechanism with an anti-detachment structure, characterized in that, Includes a base, on which are provided: A fixed adjustment box and a movable adjustment box that can move relative to the base are provided on the base. The fixed adjustment box and the movable adjustment box are respectively used to carry the ends of the two communication cables to be connected. The clamping components disposed on the fixed adjustment box and the movable adjustment box are configured to move synchronously in opposite directions or in opposite directions to achieve centering clamping of cables of different diameters. A spacing adjustment component is disposed between the fixed adjustment box and the movable adjustment box. The spacing adjustment component is configured to drive the movable adjustment box to move relative to the fixed adjustment box in order to adjust the docking distance between the ends of the two cables. The locking components, located on each clamping assembly, are configured to lock the ends of the two cables to be connected.

2. The connection mechanism for industrial communication having a fall-preventing structure according to claim 1, wherein The clamping assembly includes a bidirectional lead screw rotatably connected inside a fixed adjustment box and a movable adjustment box, and movable seats or movable blocks threadedly connected to both sides of the bidirectional lead screw respectively; one end of the bidirectional lead screw is connected to a handle for driving the bidirectional lead screw to rotate, so as to realize the equidistant opposite or opposite movement of the movable seats or movable blocks on both sides.

3. The connection mechanism for industrial communication with a fall-preventing structure according to claim 2, wherein An arc-shaped clamping plate is fixedly connected to the top of the movable seat on the fixed adjustment box, and an arc-shaped clamping rod is fixedly connected to the top of the movable block on the movable adjustment box; the arc-shaped clamping plate and the arc-shaped clamping rod are respectively used to clamp the ends of the two cables to be connected.

4. The industrial communication connection mechanism with an anti-detachment structure according to claim 2, characterized in that, The bidirectional lead screw is connected to the handle via a second worm gear assembly.

5. The connection mechanism for industrial communication having a structure for preventing disengagement according to claim 1, wherein The spacing adjustment assembly includes a threaded rod rotatably connected to the lower end of the base, and a threaded seat threadedly connected to the outer periphery of the threaded rod; the top of the threaded seat is fixedly connected to the bottom of the movable adjustment box; one end of the threaded rod is connected to a handle for driving the threaded rod to rotate, thereby pushing the movable adjustment box to slide horizontally on the base.

6. The connection mechanism for industrial communication with a fall-preventing structure according to claim 5, wherein The threaded rod is connected to the handle via a third worm gear assembly.

7. The connection mechanism for industrial communication having a structure for preventing disengagement according to claim 1, wherein The locking assembly includes sleeves respectively connected to the ends of the two mating cables, a threaded connection pair disposed between the two sleeves, and a radial locking mechanism disposed on the sleeves, wherein: The two sleeves are respectively fixed on the arc-shaped clamping plate of the fixed adjustment box and the arc-shaped clamping rod of the movable adjustment box; The threaded connection is used to axially tighten the two sleeves; The radial locking mechanism is used to press against and lock the outer periphery of the cable to prevent the threaded connection from loosening due to vibration.

8. The connection mechanism for industrial communication having a structure for preventing disengagement according to claim 7, wherein The threaded connection includes a threaded cylinder rotatably connected to one end of one of the sleeves, and a threaded groove disposed on the outer periphery of one end of the other sleeve; the inner side of the threaded cylinder is threadedly connected to the outer periphery of the threaded groove.

9. The connection mechanism for industrial communication having a structure for preventing disengagement according to claim 7, wherein The radial locking mechanism includes a housing fixedly connected to the outer periphery of each sleeve, a turntable rotatably connected inside each housing, a first worm gear fixedly connected to one side of the turntable, a first worm shaft drivenly connected to the outer side of the first worm gear, and a handle connected to one end of the first worm shaft; the surface of the turntable is provided with multiple sliding grooves, a sliding column is slidably connected in each groove, a limit rod is fixedly connected to one side of each sliding column, and the limit rod is slidably connected to the outer periphery of the sleeve.

10. The connection mechanism for industrial communication having a structure for preventing disengagement according to claim 8, wherein The number of the sliding grooves and the limiting rods are both three, and the three sliding grooves are evenly distributed in a circle on the surface of the turntable, and the three limiting rods are evenly distributed in a circle on the outer circumference of the sleeve, which is used to achieve synchronous three-point radial locking of the cable.

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