Suspended fixed-depth constant-tension anchoring device

Abstract

The invention relates to the technical field of anchoring equipment, and discloses a suspended fixed-depth constant-tension anchoring device which comprises a central stand column and a suction anchor used for penetrating into a seabed, a ballast tank is fixed to the bottom of the central stand column, two rotating seats are fixedly installed in the central stand column, a winding wheel is rotationally connected between the two rotating seats, and a plurality of rotating shafts are arranged on the winding wheel. An anchor cable is wound on the outer side of the winding wheel; a driving frame is rotatably connected in the winding wheel, a rotating drum is coaxially and rotatably arranged in the driving frame, a plurality of groups of sliding grooves are formed in the driving frame in the circumferential direction in an array mode, a top frame is slidably connected in each group of sliding grooves, and a first connecting rod is connected between the rotating drum and each top frame; a locking assembly used for locking the anchor cable is arranged in the center stand column. Through gravity adjustment of the ballast tank, the winding wheel and the locking assembly do not need to bear large tension, stable operation of equipment is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of anchoring equipment technology, specifically to a suspended, constant-depth, constant-tension anchor. Background Technology

[0002] Suspended constant-depth constant-tension anchors monitor and adjust the tension of the anchor cable in real time through sensors equipped on the winch or through an electronic control system. When the ship or floating platform moves at sea due to waves, currents, or wind, the anchor cable length remains unchanged, causing the ship or floating platform to sink or float. This changes the buoyancy experienced by the ship or floating platform, and the monitoring equipment detects the change in anchor cable tension. The system automatically adjusts the length of the anchor cable by winding or unwinding the winch, keeping the ship or floating platform suspended at a set depth. At the same time, it keeps the difference between the buoyancy and gravity experienced by the ship or floating platform constant, thus maintaining a constant anchor cable tension.

[0003] Currently, constant tension mooring devices often use hydraulic clamping to hold and secure the anchor cable during the winding and unwinding process to adjust the unwinding length. However, when using this existing method to secure the anchor cable, the cable is directly pulled by the winch during mooring, causing the anchor cable tension to exert a large pulling force on the winch's braking system and winding wheel. This results in the winch constantly bearing a high tensile load during the winding of the anchor cable, which can easily lead to overheating, wear, or even failure of the winch's braking and drive systems. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended, constant-depth, constant-tension mooring device to solve the problems mentioned in the above process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a suspended constant-depth constant-tension mooring device, comprising a central column and a suction anchor for penetrating the seabed, wherein a ballast tank is fixed at the bottom of the central column, and two rotating seats are fixedly installed inside the central column, a winding wheel is rotatably connected between the two rotating seats, an anchor cable is wound around the outside of the winding wheel, and one end of the anchor cable is fixedly connected to the suction anchor. A drive frame is rotatably connected inside the winding wheel. A rotating cylinder is coaxially rotatably provided inside the drive frame. Multiple sets of sliding grooves are arranged in a circumferential array on the drive frame. A top frame is slidably connected in each set of sliding grooves. A first connecting rod is connected between the rotating cylinder and each top frame. The inner side of the winding wheel is provided with slots that correspond one-to-one with multiple top frames, and a pressure sensor is provided in one of the slots. The central column is equipped with a locking assembly for securing the anchor cable.

[0006] As a preferred embodiment of the suspended constant-depth constant-tension mooring device of the present invention, it further includes a plurality of large holding anchors arranged in a circular array around the suction anchor, and each of the large holding anchors is connected to the ballast tank by an anchor chain, and each anchor chain is connected to a buoy.

[0007] As a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, wherein: a rotating shaft is rotatably provided inside the central column, and the rotating cylinder is fixedly sleeved on the outside of the rotating shaft.

[0008] As a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, the slot is configured as a right-angled triangle structure, the pressure sensor is disposed on the inner wall of the right-angled side of the slot, and a triangular block of a right-angled triangle structure that cooperates with the slot is fixed on the outer side of the top frame.

[0009] As a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, wherein: ratchet wheels are coaxially fixed at both ends of the drive frame, fixed plates are fixedly installed on the outer sides of the two rotating seats, second guide rods are slidably passed through the two fixed plates, trapezoidal blocks are fixedly connected to the top ends of the two second guide rods, second springs are fixedly connected between the two trapezoidal blocks and the two fixed plates respectively, and grooves that cooperate with the trapezoidal blocks are provided on the outer sides of the two ratchet wheels.

[0010] In a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, a brake seat is slidably connected to the inner side of each of the two rotating seats, the top of each of the two brake seats abuts against the outermost side of the winding wheel, a first guide rod is fixedly installed at the bottom of each of the two brake seats and slides into the central column, a first spring is fixedly connected between the bottom of each of the two brake seats and the central column, and multiple first springs are sleeved on the outer side of multiple first guide rods in a corresponding manner.

[0011] In a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, a movable plate is fixedly connected between the bottoms of the two brake seats, and the bottom ends of the two second guide rods respectively abut against the top of the movable plate.

[0012] As a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, the locking assembly includes a movable ring slidably connected to the central column and two symmetrically arranged clamping blocks. A second connecting rod is rotatably connected between the two clamping blocks and the movable ring. Two third connecting rods are rotatably connected between the two clamping blocks and the inner wall of the central column. A parallelogram structure is formed between the clamping blocks, the inner wall of the central column and the two third connecting rods.

[0013] In a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, a hydraulic push rod is fixedly installed inside the central column, and the telescopic end of the hydraulic push rod is fixedly connected to the bottom of the moving ring.

[0014] As a preferred embodiment of the suspended constant-depth constant-tension anchor of the present invention, wherein: a guide seat is fixed on the central column, the guide seat is provided with a through hole for the anchor cable to pass through, the through hole is located directly above the middle position of the two clamping blocks, and a plurality of balls are rotatably arranged on the inner wall of the through hole, the plurality of balls being arranged in a circumferential array.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves the total weight of a ship or offshore floating platform by adjusting the water intake or drainage of the ballast tank, thereby ensuring that the buoyancy of the ship or offshore floating platform is always slightly greater than the total weight. This reduces the tensile load on the winding wheel during winding. Furthermore, by setting up a locking assembly to clamp and fix the anchor cable, the winding wheel can be relieved of the anchor cable tensile load after being clamped by the locking assembly. Thus, neither the locking assembly nor the winding wheel needs to bear a large tensile force, ensuring stable operation of the equipment and increasing its service life.

[0016] This invention achieves constant tension of the anchor cable by automatically controlling the ballast tank, thereby applying pre-tension to the ship or offshore floating platform, reducing the platform's inertial motion response under the action of waves, currents or wind, and accurately controlling the ship or offshore floating platform to float at a set depth.

[0017] The buoy of this invention is submerged in seawater during use, so the buoyancy of the buoy is constant. The buoyancy of the buoy controls the shape of the anchor chain from the high-holding anchor to the buoy section to maintain stability, thereby keeping the high-holding anchor stable and not moving. Under the combined effect of the fixing forces of multiple high-holding anchors and anchor chains, the ship or offshore floating platform has both good wind and wave positioning capabilities and can maintain a relatively fixed operating position, improving its ability to resist the effects of horizontal wind, waves and currents.

[0018] When winding up the anchor cable, this invention uses a drive shaft to rotate, causing the drum to drive the first connecting rod and push the top frame outward along the slide groove. The top frame then contacts the inner wall of the winding wheel and, with the rotation of the drive frame, eventually extends into the slot of the winding wheel, thus fixing the drive frame relative to the winding wheel. This allows the drive frame to drive the winding wheel to rotate and wind up the cable. When the ship or floating platform rises to the surface, the drive shaft rotates in the opposite direction, causing the drum to drive the first connecting rod and pull the top frame inward along the slide groove. This separates multiple top frames from the winding wheel, allowing the cable to be pulled out directly as the ship or floating platform rises, reducing energy consumption.

[0019] In this invention, the fixing plate uses a spring and a sliding rod to allow the trapezoidal block to extend into the groove of the ratchet. The engagement between the trapezoidal block and the ratchet groove provides a certain resistance to the rotation of the drive frame. Therefore, when the rotating shaft rotates, it first drives the rotating drum to rotate, thereby allowing the top frame to extend into the slot to fix the drive frame and the winding wheel. After the top frame engages with the slot, the rotation of the rotating shaft is transmitted to the winding wheel through the rotating drum, the first connecting rod, the top frame, and the slot, thereby driving the winding wheel to rotate. At this time, the drive frame drives the ratchet to rotate, causing the groove of the ratchet to slide into the inclined side of the trapezoidal block. This causes the sliding rod to push the baffle to stretch the spring. Therefore, the trapezoidal block will not obstruct the rotating drum from driving the winding wheel to perform the winding operation.

[0020] In this invention, when the winding wheel is winding the anchor cable, one side of one of the top frames contacts a pressure sensor in the slot, and the pressure sensor transmits the detection signal to the external main controller in real time. After the anchor cable is straightened, the winding wheel can no longer rotate, which increases the pressure of the top frame on the side wall of the slot. When the pressure sensor value reaches the set value, it indicates that the anchor cable is taut. At this time, the external main controller controls the hydraulic push rod to push the moving ring to push the second connecting rod, causing the two clamping blocks to clamp the anchor cable. Since the force of the second connecting rod on the clamping blocks is obliquely upward, the anchor cable will separate upward after clamping, reducing the tension of the anchor cable between the top of the clamping block and the winding wheel. The pressure sensor can detect the slight change in pressure to determine that the locking assembly has locked the anchor cable. At this time, the rotating shaft can be driven to reverse to separate the top frame from the slot, thereby relieving the load on the winding wheel and increasing the service life of the equipment.

[0021] In this invention, when the winding wheel is winding the anchor cable, the drive frame drives the ratchet to rotate, causing the groove to push the trapezoidal block to compress the second spring. The continuous grooves on the outer side of the ratchet cause the trapezoidal block to push the second guide rod to move up and down reciprocally. The bottom end of the second guide rod moves down, pushing the moving plate to move the brake seat down and compress the first spring. When the bottom end of the second guide rod moves up, the elastic force of the first spring causes the brake seat to move the moving plate up, thereby realizing the up and down reciprocating movement of the brake seat. This allows the brake seat to intermittently contact the outer side of the winding wheel during winding, achieving the effect of intermittent braking. This avoids continuous friction and overheating between the brake seat and the outer side of the winding wheel during winding, thereby increasing the service life of the brake seat.

[0022] In this invention, when the winding wheel is unwound, the sliding top frame inside the drive frame separates from the slot inside the winding wheel. Therefore, when the anchor cable is pulled out and the winding wheel rotates, the drive frame and ratchet do not rotate, so that the trapezoidal block and the second guide rod do not move up and down. This ensures that the brake seat is always in contact with the outermost side of the winding wheel, preventing the anchor cable from loosening and tangling due to the inertial rotation of the winding wheel, thus ensuring the normal operation of the equipment.

[0023] If necessary, this invention can set only the central column to protrude above the water surface, and utilize the annular cross-section of the central column to further reduce the load on the platform's motion balance position control caused by the changes in drainage volume due to tidal rise and fall. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0027] Figure 4 This is a schematic cross-sectional view of the central column assembly structure of the present invention.

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide seat assembly of the present invention.

[0029] Figure 6 This is a schematic cross-sectional view of the guide seat assembly of the present invention.

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the winding wheel assembly of the present invention.

[0031] Figure 8 This is a cross-sectional view of the winding wheel assembly structure of the present invention.

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the drive frame assembly of the present invention.

[0033] Figure 10 This is a schematic cross-sectional view of the drive frame assembly structure of the present invention.

[0034] Figure 11 This is a schematic diagram of the first cross-sectional structure of the rotating shaft assembly of the present invention.

[0035] Figure 12 This is a schematic diagram of the second cross-sectional structure of the rotating shaft assembly of the present invention.

[0036] Figure 13 This is a schematic diagram of the three-dimensional structure of the top frame assembly of the present invention.

[0037] In the diagram: 1. Suction anchor; 2. Anchor cable; 21. Winding wheel; 211. Slot; 212. Pressure sensor; 22. Moving plate; 23. Brake seat; 231. First spring; 232. First guide rod; 3. High-holding-force anchor; 4. Anchor chain; 5. Buoy; 6. Central column; 61. Rotating seat; 62. Guide seat; 7. Ballast tank; 8. Drive frame; 81. Ratchet; 811. Trapezoidal block; 812. Second spring; 813. Fixing plate; 814. Second guide rod; 82. Rotating shaft; 821. Top frame; 822. First connecting rod; 823. Rotating cylinder; 83. Slide groove; 9. Moving ring; 91. Hydraulic push rod; 92. Second connecting rod; 93. Clamping block; 94. Third connecting rod. Detailed Implementation

[0038] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific configurations and algorithms presented below, but covers any modifications, substitutions, and improvements to elements, components, and algorithms without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description in order to avoid unnecessarily obscuring the invention.

[0039] Example 1, referring to Figure 1-13 The first embodiment of the present invention provides a suspended constant-depth constant-tension mooring device, which includes a central column 6 and a suction anchor 1 for penetrating the seabed. A ballast tank 7 is fixed at the bottom of the central column 6. Two rotating seats 61 are fixedly installed inside the central column 6. A winding wheel 21 is rotatably connected between the two rotating seats 61. An anchor cable 2 is wound around the outside of the winding wheel 21, and one end of the anchor cable 2 is fixedly connected to the suction anchor 1. A drive frame 8 is rotatably connected inside the winding wheel 21. A rotating drum 823 is coaxially rotatably provided inside the drive frame 8. Multiple sets of sliding grooves 83 are arranged in a circumferential array on the drive frame 8. A top frame 821 is slidably connected in each set of sliding grooves 83. A first connecting rod 822 is connected between the rotating drum 823 and each top frame 821. The inner side of the winding wheel 21 is provided with slots 211 that correspond one-to-one with multiple top frames 821, and a pressure sensor 212 is provided in one of the slots 211. The central column 6 is equipped with a locking assembly for securing the anchor cable 2.

[0040] It also includes multiple large holding anchors 3 arranged in a circular array around the suction anchor 1. Each large holding anchor 3 is connected to the ballast tank 7 by an anchor chain 4, and each anchor chain 4 is connected to a buoy 5.

[0041] The central column 6 has a rotating shaft 82 inside, and the rotating cylinder 823 is fixedly sleeved on the outside of the rotating shaft 82.

[0042] The card slot 211 is designed as a right-angled triangle structure, and the pressure sensor 212 is located on the inner wall of the right-angled side of the card slot 211. A triangular block with a right-angled triangle structure that cooperates with the card slot 211 is fixed on the outside of the top frame 821.

[0043] Both ends of the drive frame 8 are coaxially fixed with ratchet 81. The outer sides of the two rotating seats 61 are fixedly installed with fixing plates 813. The two fixing plates 813 are slidably connected with second guide rods 814. The top ends of the two second guide rods 814 are fixedly connected with trapezoidal blocks 811. The two trapezoidal blocks 811 and the two fixing plates 813 are respectively fixedly connected with second springs 812. The outer sides of the two ratchet 81 are provided with grooves that cooperate with the trapezoidal blocks 811.

[0044] The locking assembly includes a movable ring 9 slidably connected within the central column 6 and two symmetrically arranged clamping blocks 93. Each clamping block 93 is rotatably connected to the movable ring 9 with a second connecting rod 92. Each clamping block 93 is rotatably connected to the inner wall of the central column 6 with two third connecting rods 94. The clamping blocks 93, the inner wall of the central column 6, and the two third connecting rods 94 form a parallelogram structure.

[0045] A hydraulic push rod 91 is fixedly installed inside the central column 6, and the telescopic end of the hydraulic push rod 91 is fixedly connected to the bottom of the moving ring 9.

[0046] A guide seat 62 is fixed on the central column 6. The guide seat 62 is provided with a through hole for the anchor cable 2 to pass through. The through hole is located directly above the middle position of the two clamping blocks 93. Multiple balls are rotatably arranged on the inner wall of the through hole. The multiple balls are arranged in a circumferential array.

[0047] During use, the suction anchor 1 is fixedly installed in the center of the predetermined sea area, then one end of the anchor cable 2 is connected to the top of the suction anchor 1, and multiple large suction anchors 3 are evenly arranged and fixed around the circumference of the suction anchor 1, and the buoy 5 on the anchor chain 4 is completely submerged in the seawater. Then, when the ship or offshore floating platform needs to lower its buoyancy depth, the ballast tank 7 increases its total weight by absorbing water through the ballast system. At the same time, it drives the winding wheel 21 to rotate and wind up the anchor cable 2. The winding process of the anchor cable 2 is as follows: the drive device drives the rotating shaft 82 to rotate. At this time, the trapezoidal block 811 is engaged in the groove on the ratchet 81 by the elastic force of the second spring 812. The rotation of the drive frame 8 needs to overcome the elastic force of the second spring 812, so that the rotation of the drive frame 8 has a certain resistance. Therefore, when the rotating shaft 82 rotates, it first drives the rotating drum 823 to rotate, so that the first connecting rod 822 on the outside of the rotating drum 823 pushes the top frame 821 to slide along the sliding groove 83 on the inner side of the drive frame 8 to the outside of the drive frame 8, until the outside of the top frame 821 contacts the inner wall of the winding wheel 21. At this time, the top frame 821 can no longer move towards the outside of the drive frame 8. The rotating shaft 82 continues to rotate, so that the top frame 821 can move outward. The drive frame 8 is rotated by the slide groove 83, causing the groove on the ratchet 81 to abut against and slide relative to the inclined surface of the trapezoidal block 811. This causes the trapezoidal block 811 to push the second guide rod 814 downward and compress the second spring 812, so that the trapezoidal block 811 no longer obstructs the rotation of the drive 8. As the drive frame 8 rotates, the top frame 821 gradually moves to one side of the inner slot 211 of the winding 21. The top frame 821 is pushed by the first connecting rod 822 through the rotation of the rotating drum 823, causing the top frame 821 to extend into the slot 211 inside the winding wheel 21. The right-angled side of the triangular block on the top frame 821 abuts against the right-angled side inside the slot 211. As the rotating shaft 82 continues to rotate, the right-angled side of the triangular block on the top frame 821 pushes the right-angled side inside the slot 211, causing the top frame 821 to push the winding wheel 21 to rotate, thereby causing the winding wheel 21 to wind up the anchor cable 2. Simultaneously, the right-angled side of the triangular block on the top frame 821 abuts against the right-angled side inside the slot 211. One of the right-angled sides of the triangular block on the top frame 821 abuts against the pressure sensor 212 inside the slot 211. The pressure sensor 212 then transmits the detection signal to the external controller in real time. After the winding wheel 21 winds the anchor cable 2 until it is straight, the winding wheel cannot rotate. The continued rotation of the shaft 82 causes the top frame 821 and the slot 211, which are in contact with the pressure sensor 212, to press against the pressure sensor 212, increasing the sensing value of the pressure sensor 212. This continues until the sensing value of the pressure sensor 212 reaches the set value, indicating that the anchor cable 2 has been straightened and has a certain tension to prevent bending. At this point, the external controller controls the hydraulic push rod 91 to extend the telescopic end, causing the moving ring 9 to move upwards within the central column 6, thus pushing one of the two second connecting rods 92. The ends move upward, causing the other ends of the two second connecting rods 92 to push the two clamping blocks 93 to move. This causes the two clamping blocks 93 to drive the third connecting rods 94, which are rotatably connected to themselves, to rotate inside the central column. Since the clamping blocks 93, the inner wall of the central column 6, and the two third connecting rods 94 form a parallelogram structure, the clamping blocks 93 are always in a vertical state. This allows the two clamping blocks 93 to clamp the anchor cable 2 along an upward arc path. The second connecting rods 92 generate an upward thrust on the clamping blocks 93. As the two clamping blocks 93 clamp the anchor cable 2, the clamping force of the two clamping blocks 93 on the anchor cable 2 is partially separated upward. This reduces the tension of the anchor cable 2 between the top of the clamping blocks 93 and the winding wheel 21, thus reducing the pressure value monitored by the pressure sensor 212. This indicates that the two clamping blocks 93 are clamping the anchor cable 2. Then, based on the pressure value monitored by the pressure sensor 212, the automatic control can reduce the rotation of the drive shaft 82 in the reverse direction. At this time, the right-angled side of the trapezoidal block 811 abuts against the groove on the ratchet 81, making the ratchet 81 unable to rotate in the reverse direction, thus preventing the drive frame 8 from rotating in the reverse direction. When the shaft 82 rotates in the reverse direction, it drives the rotating drum 823 to rotate in the reverse direction, causing the first connecting rod 822 to pull the top frame 821 towards the middle of the drive frame 8, thereby causing the top frame 821 to disengage from the slot 211 inside the winding wheel 21, thus making the drive frame 8 and the winding wheel 21 no longer relatively fixed. At this time, the tension of the anchor cable 2 between the top of the clamping block 93 and the winding wheel 21 can make the winding wheel 21 rotate slightly, so that the winding wheel 21 no longer bears the tension of the anchor cable 2, avoiding overheating, wear or failure of the equipment, and increasing the service life of the equipment. After the anchor cable 2 is locked by the locking assembly and the load on the winding reel 21 is removed, some of the seawater pressed into the ballast tank 7 is discharged through the ballast system of the ballast tank 7, thereby increasing the buoyancy of the ship or floating platform. This ensures that the buoyancy of the ship or floating platform is always slightly greater than the total weight. The tension of the anchor cable 2 is gradually increased to the design value. In this way, the tension of the anchor cable 2 is used to apply preload to the ship or floating platform, reducing the inertial motion response of the platform under the action of waves, currents or wind.

[0048] Furthermore, when a ship or offshore floating platform is suspended at a constant depth in seawater, the buoy 5 is submerged in seawater during use, so the buoy force on the buoy 5 is constant. The buoy force of the buoy 5 controls the shape of the anchor chain 4 from the high-holding anchor 3 to the buoy 5 section to be stable, so that the high-holding anchor 3 is not easy to move on the seabed. Under the combined effect of the fixing forces of multiple high-holding anchors 3 and anchor chains 4, the ship or offshore floating platform has both good anti-wind and wave positioning capabilities and can maintain a relatively fixed operating position, improving its ability to resist the effects of horizontal wind, waves and currents. Furthermore, when the ship or offshore floating platform moves through wind and waves, the buoyancy of the ship or offshore floating platform is always slightly greater than the total weight through the automatic adjustment of the ballast tank 7. At the same time, the anchor cable 2 is automatically controlled to be wound up and unwound, so that the tension is constant, and the ship or offshore floating platform can be accurately controlled to float at a set depth.

[0049] In addition, if necessary, only the upper part of the central column 6 can be set to protrude above the water surface. By utilizing the smaller annular cross-section of the central column, the volume change of drainage caused by tidal rise and fall can be further reduced, thereby reducing the change of buoyancy and thus reducing the possibility of platform movement, thereby better achieving suspension at a constant depth.

[0050] Example 2, refer to Figure 1-13 This is the second embodiment of the present invention, which differs from the first embodiment in that: Both rotating seats 61 are slidably connected to brake seats 23 on their inner sides. The tops of the two brake seats 23 respectively abut against the outermost side of the winding wheel 21. The bottoms of the two brake seats 23 are fixedly installed with first guide rods 232 that slide into the central column 6. The bottoms of the two brake seats 23 are fixedly connected to the central column 6 with first springs 231. Multiple first springs 231 are sleeved on the outside of multiple first guide rods 232 in a corresponding manner.

[0051] A movable plate 22 is fixedly connected between the bottoms of the two brake seats 23, and the bottom ends of the two second guide rods 814 respectively abut against the top of the movable plate 22.

[0052] During use, when the winding wheel 21 winds up the anchor cable 2, the drive frame 8 drives the ratchet 81 to rotate. This causes the groove on the ratchet 81 to push the trapezoidal block 811 through the inclined surface of the trapezoidal block 811, compressing the second spring 812. At the same time, this causes the second guide rod 814 to move downwards. The continuous grooves on the outer side of the ratchet 81 cause the trapezoidal block 811 to push the second guide rod 814 downwards, and the elastic force of the second spring 812 causes the second guide rod 814 to move upwards. This causes the second guide rod 814 to reciprocate up and down when the winding wheel 21 winds up the anchor cable 2. As the second guide rod 814 moves downwards, the second guide rod 814... The bottom end pushes the moving plate 22 to move the brake seat 23 down and compress the first spring 231. When the second guide rod 814 moves up, the elastic force of the first spring 231 causes the brake seat 23 to move the moving plate 22 up and reset. Thus, the brake seat 23 moves up and down through the reciprocating motion of the second guide rod 814. This allows the brake seat 23 to intermittently contact the outer side of the winding wheel 21 when the winding wheel 21 is winding, thus achieving the effect of intermittent braking. This avoids the brake seat 23 from overheating due to continuous friction with the outer side of the winding wheel 21 during the winding process, thereby increasing the service life of the brake seat 23. In addition, when the winding wheel 21 unwinds the anchor cable 2, the sliding top frame 821 inside the drive frame 8 separates from the slot 211 inside the winding wheel 21. Therefore, when the anchor cable 2 is pulled out and the winding wheel 21 rotates, the drive frame 8 and the ratchet 81 do not rotate, so that the trapezoidal block 811 and the second guide rod 814 do not move up and down. This ensures that the brake seat 23 is always in contact with the outermost side of the winding wheel 21, thereby preventing the anchor cable 2 from becoming loose during unwinding due to the inertial rotation of the winding wheel 21, which would easily cause the anchor cable 2 to become entangled. This ensures that the anchor cable 2 is unwound neatly and that the equipment is operating normally.

[0053] The remaining structure is the same as that in Example 1.

[0054] Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art, based on a study of the drawings, specification, and claims, should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to identify names rather than to indicate any particular order. No reference numerals in the claims should be construed as limiting the scope of protection. The functionality of multiple parts appearing in the claims can be implemented by a single hardware or software module. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A suspended, constant-depth, constant-tension mooring device, characterized in that: It includes a central column (6) and a suction anchor (1) for penetrating the seabed. A ballast tank (7) is fixed at the bottom of the central column (6). Two rotating seats (61) are fixedly installed inside the central column (6). A winding wheel (21) is rotatably connected between the two rotating seats (61). An anchor cable (2) is wound around the outside of the winding wheel (21), and one end of the anchor cable (2) is fixedly connected to the suction anchor (1). A drive frame (8) is rotatably connected inside the winding wheel (21). A rotating cylinder (823) is coaxially rotatably provided inside the drive frame (8). Multiple sets of sliding grooves (83) are arranged in a circumferential array on the drive frame (8). A top frame (821) is slidably connected inside each set of sliding grooves (83). A first connecting rod (822) is connected between the rotating cylinder (823) and each top frame (821). The inner side of the winding wheel (21) is provided with slots (211) corresponding to multiple top frames (821), and a pressure sensor (212) is provided in one of the slots (211). The central column (6) is equipped with a locking assembly for locking the anchor cable (2).

2. The suspended constant-depth constant-tension anchorage according to claim 1, characterized in that: It also includes multiple large holding anchors (3) arranged in a circular array around the suction anchor (1), and each of the large holding anchors (3) is connected to the ballast tank (7) by an anchor chain (4), and each of the anchor chains (4) is connected to a buoy (5).

3. The suspended constant-depth constant-tension anchorage according to claim 1, characterized in that: The central column (6) is provided with a rotating shaft (82) that rotates inside, and the rotating cylinder (823) is fixedly sleeved on the outside of the rotating shaft (82).

4. The suspended constant-depth constant-tension anchorage according to claim 1, characterized in that: The slot (211) is configured as a right-angled triangle structure, the pressure sensor (212) is located on the inner wall of the right-angled side of the slot (211), and a triangular block with a right-angled triangle structure that cooperates with the slot (211) is fixed on the outside of the top frame (821).

5. The suspended constant-depth constant-tension anchorage according to claim 1, characterized in that: Both ends of the drive frame (8) are coaxially fixed with ratchet (81), and both rotating seats (61) are fixedly mounted with fixing plates (813) on their outer sides. Both fixing plates (813) have second guide rods (814) slidingly passing through them. Both second guide rods (814) have trapezoidal blocks (811) fixedly connected to their top ends. The two trapezoidal blocks (811) and the two fixing plates (813) are respectively fixedly connected with second springs (812). Both ratchet (81) have grooves on their outer sides that cooperate with the trapezoidal blocks (811).

6. The suspended constant-depth constant-tension anchorage according to claim 5, characterized in that: Both rotating seats (61) are slidably connected to brake seats (23) on their inner sides. The tops of the two brake seats (23) respectively abut against the outermost side of the winding wheel (21). The bottoms of the two brake seats (23) are fixedly installed with first guide rods (232) that slide into the central column (6). The bottoms of the two brake seats (23) are fixedly connected to the central column (6) with first springs (231). Multiple first springs (231) are sleeved on the outside of multiple first guide rods (232) in a corresponding manner.

7. The suspended constant-depth constant-tension anchorage according to claim 6, characterized in that: A movable plate (22) is fixedly connected between the bottoms of the two brake seats (23), and the bottom ends of the two second guide rods (814) respectively abut against the top of the movable plate (22).

8. The suspended constant-depth constant-tension anchorage according to claim 1, characterized in that: The locking assembly includes a movable ring (9) slidably connected to the central column (6) and two symmetrically arranged clamping blocks (93). A second connecting rod (92) is rotatably connected between the two clamping blocks (93) and the movable ring (9). Two third connecting rods (94) are rotatably connected between the two clamping blocks (93) and the inner wall of the central column (6). A parallelogram structure is formed between the clamping blocks (93), the inner wall of the central column (6), and the two third connecting rods (94).

9. The suspended constant-depth constant-tension anchorage according to claim 8, characterized in that: A hydraulic push rod (91) is fixedly installed inside the central column (6), and the telescopic end of the hydraulic push rod (91) is fixedly connected to the bottom of the moving ring (9).

10. The suspended constant-depth constant-tension anchorage according to claim 8, characterized in that: A guide seat (62) is fixed on the central column (6). The guide seat (62) has a through hole for the anchor cable (2) to pass through. The through hole is located directly above the middle position of the two clamping blocks (93). Multiple balls are rotatably arranged on the inner wall of the through hole. The multiple balls are arranged in a circumferential array.

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