Anchoring clamp for pulling of submarine cables

Abstract

The application provides an anchoring clamp for submarine cable pulling, and relates to the field of cable fixing. The anchoring clamp for submarine cable pulling comprises a supporting leg, the top of the supporting leg is fixedly connected with a fixing cylinder, the top of the fixing cylinder is fixedly connected with a supporting frame, and the top of the supporting frame is fixedly connected with a fixing support; the inner cavity of the supporting frame is provided with a driving assembly matched with the fixing cylinder, the driving assembly comprises a double-head motor fixed between the supporting frame and the fixing support, the inner side of the fixing cylinder is provided with a clamping assembly matched with the driving assembly in lifting, and the inner side of the clamping assembly is provided with an adjusting assembly. The anchoring clamp for submarine cable pulling can realize automatic locking and fixing of submarine cables with different diameters under the premise of guiding straightening through the cooperation of the driving assembly, the clamping assembly, the adjusting assembly and the guiding assembly during the anchoring and clamping of the submarine cable pulled to the sea.

Description

Technical Field

[0001] This application relates to the field of cable fixing technology, and more specifically, to an anchoring clamp for pulling submarine cables. Background Technology

[0002] After the submarine cables for offshore oil and gas production facilities are laid on the seabed, a special winch is used to pull the submarine cables from the seabed through bend limiters and conduits to the offshore facilities. Then, they are cut, anchored, and introduced into the cable junction box. After the submarine cables are pulled out and before the matching anchoring flanges are installed, the submarine cables need to be temporarily fixed to prevent them from slipping to the seabed. The previous method was to use fiber slings or hemp ropes with chain hoists for temporary fixing, which was unreliable, unsafe, and inconvenient to operate. Moreover, there was a risk of damaging the cables. If the submarine cables are damaged or slip back to the seabed, it will cause huge property losses and project delays.

[0003] Among existing technologies (patent application CN216566925U, entitled "A Protective Armor Clamp for Submarine Cables with a Protective Structure"), the structure is reasonable and the design is novel. Under the action of the buffer spring, it can buffer the cable and the protective clamp when they shake, extending service life and reducing costs. Furthermore, the positions of both the upper and lower clamps are adjustable, facilitating the adjustment of the cable's position within the protective clamp. However, in implementing this technical solution, it was found that existing technologies suffer from at least the problem of unstable positioning due to manual clamping and excessive labor intensity.

[0004] Since power grids and fiber optic communication networks between offshore oil and gas facilities are a common trend in the future development and construction of offshore oil and gas facilities, submarine cable laying and pulling operations occur frequently. In order to improve the safety, reliability and operability of submarine cable pulling operations, an anchoring clamp for submarine cable pulling is designed. Summary of the Invention

[0005] This application aims to at least address the technical problems in existing technologies where it is impossible to quickly and automatically lock and fix submarine cables of different diameters based on guided straightening, resulting in low safety, low reliability, and low operability of existing anchoring clamps during submarine cable pulling operations. Therefore, this application proposes an anchoring clamp for submarine cable pulling.

[0006] An anchoring clamp for pulling submarine cables according to an embodiment of this application includes: a support leg, a fixing cylinder fixedly connected to the top of the support leg, a support frame fixedly connected to the top of the fixing cylinder, and a fixing frame fixedly connected to the top of the support frame.

[0007] The inner cavity of the support frame is provided with a drive assembly that works in conjunction with the fixed cylinder, and the drive assembly includes a double-headed motor fixed between the support frame and the fixed frame. The inner side of the fixed cylinder is provided with a clamping assembly that works in conjunction with the lifting of the drive assembly.

[0008] An adjustment component is provided on the inner side of the clamping assembly.

[0009] Preferably, one output shaft of the dual-head motor is embedded with a first electric push rod, and the piston rod of the first electric push rod is fixedly connected to a first clamp. A main synchronous pulley is rotatably connected at the center of the inner cavity of the support frame, and a first slot is opened on the top of the main synchronous pulley to engage with the first clamp. The other two sides of the main synchronous pulley are connected to a secondary synchronous pulley that rotatably engages with the support frame via a synchronous belt drive.

[0010] Preferably, the clamping assembly includes a lead screw fixed to the inner cavity of the synchronous pulley, and a lead screw sleeve is threadedly connected to the surface of the lead screw. A connecting seat is fixedly connected to the inner side of the lead screw sleeve, and a lower clamping seat is fixedly connected to the inner side of the connecting seat. An upper clamping seat is provided above the lower clamping seat and is fixedly engaged with the support frame. A semi-circular protective sleeve is provided in the inner cavity of the lower clamping seat and the upper clamping seat.

[0011] Preferably, the adjusting assembly includes stepped grooves formed around the inner cavities of the lower clamp and the upper clamp, and a limiting spring is fixedly connected to the inner cavity of the stepped groove. A stepped slide block that slides with the stepped groove is fixedly connected to the inner side of the limiting spring, and the inner side of the stepped slide block is fixedly connected to the outer side of the semi-circular sleeve. An elastic pad is fixedly connected between the semi-circular sleeve and the lower clamp and the upper clamp.

[0012] Furthermore, the inner cavity array of the semi-circular sheath is provided with an arc-shaped sliding cavity, and the inner cavity of the arc-shaped sliding cavity is slidably connected with an elastic strip.

[0013] Preferably, the inner cavity of the support frame is rotatably connected with limiting wheels that are engaged with the tensioning of the timing belt around the main synchronous pulley, and the upper and lower sides of the main synchronous pulley, the driven synchronous pulley and the limiting wheels are integrally formed with limiting edges that are engaged with the timing belt.

[0014] Preferably, a limiting groove is vertically formed at the bottom of the outer side of the fixed cylinder, and a limiting slider that is fixedly engaged with the lead screw sleeve is slidably connected to the inner cavity of the limiting groove. A through groove that is slidably engaged with the connecting seat is vertically formed at the bottom of the inner side of the fixed cylinder.

[0015] Preferably, each of the four corners of the top of the lower clamp is fixedly connected with a docking rod, and the inner cavity of the upper clamp is provided with docking holes around the perimeter for insertion and mating with the docking rods. Both the docking rods and the docking holes adopt a stepped design.

[0016] Preferably, the stepped slide groove, the limiting spring, and the stepped slide are distributed in a circumferentially divergent manner around the center point of the semi-circular sheath, and the elastic pad and the stepped slide are distributed in an interlaced manner, and the elastic strip and the arc-shaped slide cavity are designed in a staggered manner.

[0017] Preferably, both sides of the support leg are threaded with threaded rods, and the top of the threaded rods is fixedly connected with a rotating wheel. The bottom of the threaded rods is provided with a suction cup for use with the support leg, and the two sides of the support leg near the suction cups are provided with anti-slip grooves.

[0018] Preferably, both sides of the top of the support frame are fixedly connected with lifting lugs, and the edges of the lifting holes of the lifting lugs are provided with rounded chamfers and have a recessed design.

[0019] The beneficial effects of this application are as follows: During the anchoring and clamping of the submarine cable pulled to the sea, a dual-head motor provides a unified drive source, and the first electric push rod adjusts the clamping stroke between the first clamp head and the first clamp slot. The main synchronous pulley drives two sets of driven synchronous pulleys to achieve synchronous rotation via a synchronous belt. Then, the two synchronously rotating driven synchronous pulleys drive two sets of lead screws and lead screw sleeves for lifting and lowering adjustment. Finally, the two sets of lead screw sleeves, through two sets of connecting seats, drive the lower clamp to automatically lock and clamp the submarine cable upwards against the upper clamp, and downwards to disengage from the upper clamp and release the submarine cable from the lock. The system restricts and protects the submarine cable sheath with semi-circular sheaths. Then, the stepped grooves, limiting springs, and stepped slides in the lower and upper clamps provide elastic support for the two sets of semi-circular sheaths, achieving a locking effect for submarine cables of different diameters. Two sets of elastic pads, arc-shaped sliding cavities, and elastic strips further elastically limit the two sets of semi-circular sheaths, firmly anchoring them to submarine cables of different diameters. This system quickly and automatically locks and fixes submarine cables of different diameters, achieving high safety, high reliability, and high operability during submarine cable pulling operations.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structure clamping state diagram of an anchoring clamp for pulling submarine cables according to an embodiment of this application;

[0023] Figure 2 This is a three-dimensional structural guidance state diagram of an anchoring clamp for pulling a submarine cable according to an embodiment of this application;

[0024] Figure 3 This is a bottom cross-sectional view of a three-dimensional structure of an anchoring clamp for pulling submarine cables according to an embodiment of this application;

[0025] Figure 4 This is a top sectional view of a three-dimensional structure of an anchoring clamp for pulling submarine cables according to an embodiment of this application;

[0026] Figure 5 This is an initial state diagram of the driving component and clamping component structure according to an embodiment of this application;

[0027] Figure 6 This is a diagram showing the working state of the driving component and clamping component according to embodiments of this application;

[0028] Figure 7 This is a side view of the drive component structure according to an embodiment of this application;

[0029] Figure 8 This is an exploded bottom view of the clamping and adjusting components according to an embodiment of this application;

[0030] Figure 9 This is a partial exploded sectional view of the upper clamp, stepped slide, limiting spring, and stepped slide structure according to an embodiment of this application;

[0031] Figure 10 This is an exploded bottom view of the semi-circular sheath, arc-shaped sliding cavity, and elastic strip structure according to an embodiment of this application;

[0032] Figure 11 This is a bottom view of the structure of the fixing frame, dual-head motor and guide assembly according to an embodiment of this application;

[0033] Figure 12 This is a top view of the dual-head motor and guide assembly structure according to an embodiment of this application;

[0034] Figure 13 This is a partial bottom view of the guide component structure according to an embodiment of this application;

[0035] Figure 14 This is a partial side view of the three-dimensional structure of an anchoring clamp for pulling submarine cables according to an embodiment of this application.

[0036] Icons: 1. Support leg; 2. Fixing cylinder; 3. Support bracket; 4. Fixing frame; 5. Drive assembly; 51. Dual-head motor; 52. First electric push rod; 53. First clamp; 54. Main synchronous pulley; 55. First slot; 56. Slave synchronous pulley; 6. Clamping assembly; 61. Lead screw; 62. Lead screw sleeve; 63. Connecting seat; 64. Lower clamp; 65. Upper clamp; 66. Semi-circular protective sleeve; 7. Adjustment assembly; 71. Stepped slide; 72. Limiting spring; 73. Stepped slide; 74. Elastic pad; 75. 76. Arc-shaped sliding cavity; 87. Elastic strip; 88. Guide assembly; 89. Slide rail; 80. Second electric push rod; 81. Second chuck; 82. Main spur gear; 83. Second slot; 84. Rack plate; 85. Slide bar; 86. Connecting column; 87. Guide head; 88. Circular sleeve; 89. Universal ball bearing; 10. Limiting wheel; 10. Limiting slide groove; 11. Limiting slider; 12. Connecting rod; 13. Connecting hole; 14. Threaded rod; 15. Rotary wheel; 16. Suction cup; 17. Anti-slip toothed groove; 18. Lifting lug. Detailed Implementation

[0037] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment 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 limitations on this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] like Figures 1-14 As shown, an anchoring clamp for pulling submarine cables according to an embodiment of this application includes: a support leg 1, a fixing cylinder 2 fixedly connected to the top of the support leg 1, a support frame 3 fixedly connected to the top of the fixing cylinder 2, and a fixing frame 4 fixedly connected to the top of the support frame 3.

[0045] Both sides of the support leg 1 are threaded with threaded rods 14, and the top of the threaded rod 14 is fixedly connected with a rotating wheel 15. The bottom of the threaded rod 14 is provided with a suction cup 16 that works with the support leg 1 to adsorb and position the support leg 1 when it is placed on a flat surface, so as to prevent the support leg 1 from shifting when it is stationary. The two sides of the support leg 1 near the suction cup 16 are provided with anti-slip grooves 17 to increase the friction between the support leg 1 and the flat surface. The two sides of the top of the support frame 3 are fixedly connected with lifting lugs 18, and the lifting holes of the lifting lugs 18 are provided with rounded chamfers and have a concave design, so as to facilitate the use of a crane to lift the clamp as a whole.

[0046] The inner cavity of the support frame 3 is equipped with a drive assembly 5 that works in conjunction with the fixed cylinder 2. The drive assembly 5 includes a dual-head motor 51 fixed between the support frame 3 and the fixed frame 4, which provides a unified drive source. The inner side of the fixed cylinder 2 is equipped with a clamping assembly 6 that works in conjunction with the lifting of the drive assembly 5. The inner side of the clamping assembly 6 is equipped with an adjustment assembly 7, which can quickly achieve automatic locking and fixing of submarine cables of different diameters, and achieve high safety, high reliability and high operability in the process of pulling submarine cables.

[0047] like Figures 5 to 10 As shown, a first electric push rod 52 is embedded in one output shaft of the dual-head motor 51, and the piston rod of the first electric push rod 52 is fixedly connected to a first clamp 53. A main synchronous wheel 54 is rotatably connected at the center of the inner cavity of the support frame 3, and a first groove 55 is opened on the top of the main synchronous wheel 54 to engage with the first clamp 53. The first electric push rod 52 adjusts the engagement stroke between the first clamp 53 and the first groove 55. The other two sides of the main synchronous wheel 54 are connected to the slave synchronous wheel 56, which are rotatably engaged with the support frame 3, through a synchronous belt drive. The main synchronous wheel 54 drives the two sets of slave synchronous wheels 56 to achieve synchronous rotation through the synchronous belt.

[0048] The inner cavity of the support frame 3 is rotatably connected with the limiting wheel 9 around the main synchronous pulley 54, which is in coordination with the tensioning of the synchronous belt. This helps to adjust the tension of the synchronous belt and facilitates stable transmission between the main synchronous pulley 54 and the two sets of driven synchronous pulleys 56. The upper and lower sides of the main synchronous pulley 54, the driven synchronous pulleys 56 and the limiting wheel 9 are integrally formed with limiting edges that are in coordination with the timing belt, which helps to prevent the timing belt from falling off.

[0049] The clamping assembly 6 includes a lead screw 61 fixed in the inner cavity of the synchronous pulley 56, and a lead screw sleeve 62 is threadedly connected to the surface of the lead screw 61. The two sets of synchronous pulleys 56 rotate synchronously, driving the two sets of lead screws 61 and lead screw sleeves 62 to adjust their height. A connecting seat 63 is fixedly connected to the inner side of the lead screw sleeve 62, and a lower clamping seat 64 is fixedly connected to the inner side of the connecting seat 63. An upper clamping seat 65 is provided above the lower clamping seat 64 and is fixedly engaged with the support frame 3. The two sets of lead screw sleeves 62, which are adjusted by height, drive the lower clamping seat 64 upward and automatically lock and clamp the submarine cable with the upper clamping seat 65 through the two sets of connecting seats 63. When the lower clamping seat 64 moves downward and disengages from the upper clamping seat 65, the locking restriction on the submarine cable is released. The inner cavities of the lower clamping seat 64 and the upper clamping seat 65 are provided with a semi-circular sheath 66, which protects the outer sheath of the submarine cable.

[0050] A limiting groove 10 is vertically opened at the bottom of the outer side of the fixed cylinder 2, and a limiting slider 11 that is fixedly matched with the lead screw sleeve 62 is slidably connected to the inner cavity of the limiting groove 10. This limit the sliding of the lead screw sleeve 62 and improves the lifting stability of the lead screw sleeve 62. A through groove that is slidably matched with the connecting seat 63 is vertically opened at the bottom of the inner side of the fixed cylinder 2. This provides sliding support for the connecting seat 63 and prevents the connecting seat 63 from shaking or tilting during the lifting of the lead screw sleeve 62.

[0051] Each of the four corners of the top of the lower clamp 64 is fixedly connected with a connecting rod 12, and the four sides of the inner cavity of the upper clamp 65 are provided with connecting holes 13 that are inserted and matched with the connecting rods 12. These holes serve to connect the four corners of the lower clamp 64 and the upper clamp 65 in the snap-fit ​​and snap-fit ​​states, preventing the lower clamp 64 and the upper clamp 65 from tilting or shaking during snap-fit ​​and snap-fit. Both the connecting rods 12 and the connecting holes 13 adopt a stepped design to improve the tightness of the insertion between the connecting rods 12 and the connecting holes 13, and also to prevent the connecting rods 12 from shaking in the connecting holes 13 and affecting the overall stability between the lower clamp 64 and the upper clamp 65 in the snap-fit ​​state.

[0052] The adjustment assembly 7 includes stepped grooves 71 formed around the inner cavities of the lower clamp 64 and the upper clamp 65. A limiting spring 72 is fixedly connected to the inner cavity of the stepped groove 71. A stepped slide block 73 that slides with the stepped groove 71 is fixedly connected to the inner side of the limiting spring 72. The stepped grooves 71, the limiting spring 72, and the stepped slide block 73 in the lower clamp 64 and the upper clamp 65 provide elastic support for the two sets of semi-circular sheaths 66, achieving a locking effect for submarine cables of different diameters. The inner side of the stepped slide block 73 is fixedly connected to the outer side of the semi-circular sheath 66. An elastic pad 74 is fixedly connected between the semi-circular sheath 66 and the lower clamp 64 and the upper clamp 65.

[0053] The stepped slide groove 71, the limiting spring 72, and the stepped slide block 73 are distributed in a circumferentially divergent manner around the center point of the semi-circular sheath 66, providing uniform elastic support for the semi-circular sheath 66. Furthermore, the elastic pad 74 is distributed in an alternating manner with the stepped slide block 73, compensating for any support areas not reached by the stepped slide block 73, thus improving the overall tension adjustment performance of the semi-circular sheath 66. Additionally, the inner cavity of the semi-circular sheath 66 is arrayed with arc-shaped sliding cavities 75. The inner cavity is slidably connected with an elastic strip 76. The elastic strip 76 and the arc-shaped sliding cavity 75 are designed in a staggered manner to prevent the elastic strip 76 from detaching from the arc-shaped sliding cavity 75, thereby improving the lateral elastic support of the semi-circular sheath 66. At the same time, it also prevents the semi-circular sheath 66 from deforming due to the pressure of the submarine cable. The two sets of elastic pads 74, the arc-shaped sliding cavity 75 and the elastic strip 76 further elastically limit the two sets of semi-circular sheaths 66, so that the two sets of semi-circular sheaths 66 are firmly anchored to submarine cables of different diameters.

[0054] like Figures 11 to 13As shown, before anchoring the submarine cable that has been pulled out of the sea surface, the submarine cable is bent and needs to be straightened in advance before it can be inserted into the anchoring clamp for temporary clamping. The anchoring clamp does not have the function of straightening. The two sides of the inner cavity of the fixing frame 4 are provided with guide components 8 diagonally. The guide components 8 include slide rails 81 diagonally opened on both sides of the inner cavity of the fixing frame 4. The other output shaft of the dual-head motor 51 is embedded with a second electric push rod 82. The piston rod of the second electric push rod 82 is fixedly connected to a second clamp head 83. The center of the inner cavity of the fixing frame 4 is rotatably connected to a main spur gear 84. The bottom of the main spur gear 84 is provided with a second groove 85 that engages with the second clamp head 83. The second electric push rod 82 first adjusts the engagement stroke between the second clamp head 83 and the second groove 85.

[0055] The main spherical gear 84 has two diagonally meshed rack plates 86 that penetrate the fixed frame 4. Slide bars 87, which slide and engage with slide rails 81, are fixedly connected to the outer sides of the rack plates 86. With the two sets of slide rails 81 and slide bars 87 acting as sliding limits on the two sets of diagonally distributed rack plates 86, the dual-head motor 51 first drives the main spherical gear 84 to rotate forward via the second locking head 83 after it is engaged. The main spherical gear 84 then causes the two sets of diagonally distributed rack plates 86 to expand outwards, moving the rack plates 86 away from the main spherical gear 84. One end is fixedly connected to a connecting post 88, and the bottom of the connecting post 88 is fixedly connected to a guide head 89 that works with the lower clamp 64 and the upper clamp 65. The inner wall of the guide head 89 is fixedly connected to a circular sheath 810 that works with the semi-circular sheath 66, and the inner wall of the circular sheath 810 is rolled with universal balls 811. The two sets of rack plates 86 drive the guide heads 89 on the two sets of connecting posts 88 to extend outward, pre-guide and straighten the submarine cable, which is beneficial for the subsequent anchoring and locking of the submarine cable.

[0056] Specifically, the working principle of this kind of anchoring clamp for pulling submarine cables is as follows: If the clamp needs to be placed in a flat position, first grip the rotating wheel 15 to drive the threaded rod 14 to rotate clockwise. The threaded rod 14 drives the suction cup 16 to move down and adsorb and position the flat position where the support leg 1 is placed. The anti-slip groove 17 provides anti-slip treatment for the flat position where the support leg 1 is placed, thus completing the overall positioning and placement of the clamp. If the clamp needs to be lifted, use a crane to hook the lifting lug 18 to drive the clamp to the predetermined height. When temporarily anchoring and clamping the submarine cable pulled out of the sea surface, first control the second electric push rod 82 to open and drive the second clamp 83 to move up and clamp into the second groove 85 of the main spur gear 84. Then control the double-head motor 51 to open and drive the main spur gear 84 to rotate forward through the second clamp 83 in place. At this time, the first clamp 53 on the first electric push rod 52 is in an idle state.

[0057] With the sliding limit provided by the two sets of slide rails 81 and slide bars 87, the main spherical gear 84 drives the two diagonally distributed sets of rack plates 86 to expand outward. The two sets of rack plates 86, through the two sets of connecting columns 88, drive the two sets of guide heads 89 to expand outward and into position. The head end of the submarine cable passes through the first set of guide heads 89 in front, and the universal ball bearings 811 in the circular sheath 810 of the first set of guide heads 89 assist in rolling the head end of the submarine cable, so that the head end of the submarine cable passes through the front guide head 89 quickly and smoothly, and guides and straightens the area of ​​the head end of the submarine cable that has passed through, until the straightened head end of the submarine cable passes through the semi-circular sheath 66 area between the lower clamp 64 and the upper clamp 65 and reaches the second set of guide heads 89 in the rear. Similarly, the universal ball bearings 811 in the circular sheath 810 of the second set of guide heads 89 continue to pull the head end of the submarine cable backward.

[0058] After the submarine cable is pulled back to the predetermined length, the dual-head motor 51 is first stopped, and then the second electric push rod 82 is closed and the second clamp 83 is moved down to disengage from the second slot 85 of the main sprocket 84 to the initial position. At this time, after the front and rear guide heads 89 maintain a fixed extended guiding state for the submarine cable, the first electric push rod 52 is first opened and the first clamp 53 is moved down to clamp into the first slot 55 of the main synchronous wheel 54. Then the dual-head motor 51 is controlled to continue and drive the main synchronous wheel 54 to rotate forward through the first clamp 53 after it is in place. At this time, the second clamp 83 on the second electric push rod 82 is in an idle state.

[0059] With the tensioning transmission of the synchronous belt by the four sets of limiting wheels 9, the main synchronous wheel 54 drives the two sets of slave synchronous wheels 56 to rotate synchronously in the forward direction through the synchronous belt. The two sets of slave synchronous wheels 56 drive the two sets of lead screws 61 to rotate synchronously in the forward direction. With the sliding limiting cooperation of the two sets of limiting grooves 10 and limiting sliders 11 on the two sets of lead screw sleeves 62, the two sets of lead screws 61 drive the two sets of lead screw sleeves 62 to move upward synchronously. The two sets of lead screw sleeves 62 drive the lower clamp 64 to move upward toward the upper clamp 65 through the two sets of connecting seats 63. The docking rods 12 on the four corners of the lower clamp 64 are inserted into the docking holes 13 in the inner cavity of the upper clamp 65. Since the upper clamp 65 is in a fixed state, the lower clamp 64 and the upper clamp 65 tightly anchor and lock the submarine cable that has passed through. The upper and lower semi-circular sheaths 66 protect the outer sheath of the submarine cable.

[0060] During the period when the upper clamp 65 and the upper clamp 65 are tightly anchored and locked to the passing submarine cable by the two sets of semi-circular sheaths 66, the two sets of semi-circular sheaths 66 are subjected to the reverse extrusion force of the submarine cable, which forces the two sets of stepped slides 73 to slide outward in the two sets of stepped slide grooves 71 and compress the two sets of limiting springs 72. At the same time, the two sets of semi-circular sheaths 66 also compress the two sets of elastic pads 74 synchronously, and drive the two sets of elastic strips 76 to stretch and expand in the arc-shaped slide cavity 75 in the two sets of semi-circular sheaths 66 until the two sets of semi-circular sheaths 66 are tightly attached to the passing submarine cable, thus completing the temporary anchoring and locking work of the submarine cable of the predetermined length.

[0061] It should be noted that the specific models and specifications of the dual-head motor 51, the first electric push rod 52, and the second electric push rod 82 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0062] The power supply and operating principle of the dual-head motor 51, the first electric push rod 52, and the second electric push rod 82 are clear to those skilled in the art and will not be described in detail here.

[0063] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0064] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An anchoring clamp for pulling submarine cables, characterized in that, include: The support leg (1) has a fixed cylinder (2) fixedly connected to its top, and a support frame (3) fixedly connected to the top of the fixed cylinder (2), and a fixed frame (4) fixedly connected to the top of the support frame (3). The inner cavity of the support frame (3) is provided with a drive assembly (5) that works in conjunction with the fixed cylinder (2), and the drive assembly (5) includes a double-head motor (51) fixed between the support frame (3) and the fixed frame (4). The inner side of the fixed cylinder (2) is provided with a clamping assembly (6) that works in conjunction with the drive assembly (5) for lifting. An adjustment component (7) is provided on the inner side of the clamping component (6).

2. The anchoring clamp for pulling submarine cables according to claim 1, characterized in that, One output shaft of the dual-head motor (51) is fitted with a first electric push rod (52), and the piston rod of the first electric push rod (52) is fixedly connected to a first clamp (53). A main synchronous pulley (54) is rotatably connected at the center of the inner cavity of the support frame (3), and a first slot (55) is opened on the top of the main synchronous pulley (54) to engage with the first clamp (53). The other two sides of the main synchronous pulley (54) are connected to a secondary synchronous pulley (56) that rotatably engages with the support frame (3) via a synchronous belt drive.

3. The anchoring clamp for pulling submarine cables according to claim 2, characterized in that, The clamping assembly (6) includes a lead screw (61) fixed in the inner cavity of the synchronous pulley (56), and a lead screw sleeve (62) is threadedly connected to the surface of the lead screw (61). A connecting seat (63) is fixedly connected to the inner side of the lead screw sleeve (62), and a lower clamping seat (64) is fixedly connected to the inner side of the connecting seat (63). An upper clamping seat (65) is provided above the lower clamping seat (64) and is fixedly engaged with the support frame (3). A semi-circular protective sleeve (66) is provided in the inner cavity of the lower clamping seat (64) and the upper clamping seat (65).

4. The anchoring clamp for pulling submarine cables according to claim 3, characterized in that, The adjustment assembly (7) includes a stepped slide groove (71) formed around the inner cavity of the lower clamp (64) and the upper clamp (65), and a limit spring (72) is fixedly connected to the inner cavity of the stepped slide groove (71). A stepped slide seat (73) that slides with the stepped slide groove (71) is fixedly connected to the inner side of the limit spring (72), and the inner side of the stepped slide seat (73) is fixedly connected to the outer side of the semi-circular sleeve (66). An elastic pad (74) is fixedly connected between the semi-circular sleeve (66) and the lower clamp (64) and the upper clamp (65). Furthermore, the inner cavity array of the semi-circular sheath (66) is provided with an arc-shaped sliding cavity (75), and the inner cavity of the arc-shaped sliding cavity (75) is slidably connected with an elastic strip (76).

5. The anchoring clamp for pulling submarine cables according to claim 4, characterized in that, The inner cavity of the support frame (3) is rotatably connected to the surrounding area of ​​the main synchronous pulley (54) and the limiting wheel (9) is engaged with the tensioning of the synchronous belt. The upper and lower sides of the main synchronous pulley (54), the secondary synchronous pulley (56) and the limiting wheel (9) are integrally formed with limiting edges that are engaged with the limiting of the synchronous belt.

6. The anchoring clamp for pulling submarine cables according to claim 5, characterized in that, The bottom of the outer side of the fixed cylinder (2) is vertically provided with a limiting groove (10), and the inner cavity of the limiting groove (10) is slidably connected with a limiting slider (11) that is fixedly engaged with the lead screw sleeve (62). The bottom of the inner side of the fixed cylinder (2) is vertically provided with a through groove that is slidably engaged with the connecting seat (63).

7. The anchoring clamp for pulling submarine cables according to claim 6, characterized in that, The four corners of the top of the lower clamp (64) are fixedly connected with docking rods (12), and the inner cavity of the upper clamp (65) is provided with docking holes (13) that are inserted and matched with the docking rods (12). The docking rods (12) and docking holes (13) are both designed in a stepped shape.

8. The anchoring clamp for pulling submarine cables according to claim 7, characterized in that, The stepped slide groove (71), the limiting spring (72) and the stepped slide (73) are distributed in a circumferentially divergent manner along the center point of the semi-circular sleeve (66), and the elastic pad (74) and the stepped slide (73) are distributed in an interlaced manner. The elastic strip (76) and the arc-shaped slide cavity (75) are designed in a staggered manner.

9. An anchoring clamp for pulling submarine cables according to claim 8, characterized in that, Both sides of the support leg (1) are threaded with threaded rods (14), and the top of the threaded rods (14) is fixedly connected with a rotating wheel (15). The bottom of the threaded rods (14) is provided with a suction cup (16) that works with the support leg (1), and anti-slip grooves (17) are provided on both sides of the support leg (1) near the suction cup (16).

10. An anchoring clamp for pulling submarine cables according to claim 9, characterized in that, The support frame (3) has two fixedly connected lifting lugs (18) on both sides of its top, and the lifting holes of the lifting lugs (18) have rounded chamfers and a recessed design.

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