Marine exploration bearing device

Abstract

The utility model discloses a bearing device for ocean exploration, which belongs to the field of ocean exploration, solves the problem that a steel cable is wound due to the fact that the steel cable cannot be released when generating extra weaving and winding rotation torsion in the prior art, and mainly adopts the technical scheme that the bearing device for ocean exploration comprises an optical cable, the optical cable is wrapped by a steel cable, the steel cable is fixedly provided with a bearing head, the bearing head is externally and rotatably connected with a bearing seat, the bearing head can rotate around the axis of the optical cable relative to the bearing seat, the bearing head and the bearing seat are axially fixed, the bearing seat is provided with a detector, and the detector is connected with the optical cable. The optical cable and the detector are in photoelectric connection through a rotary photoelectric coupler. The utility model has the main effects that the winding rotation torsion generated by the steel cable can be released in time, and the bearing seat is prevented from rotating along with the steel cable.

Description

Technical Field

[0001] The utility model relates to the field of optical cable transmission, in particular to a marine exploration load-bearing device. Background Art

[0002] Since the steel cable is woven and twisted in a spiral manner, additional winding and rotational torque will be generated when it is stretched. The steel cables used for marine sampling and exploration are often tens of thousands of meters long, and the harm caused by this winding and rotational torque is very serious. As the sampling and exploration equipment is lowered to the seabed, the increasing steel cable will continuously increase its own tension. At the same time, the long steel cable will have system self-excited resonance, and together with the heaving of the ship caused by the undulation of the sea surface, the instantaneous tension formed by their combined action is huge, and the additional winding and rotational torque generated is also quite considerable. Before the detection equipment touches the bottom, this torque will continuously be generated, forcing the sampling and exploration equipment to rotate continuously during the lowering process. And during the cable recovery process of the equipment, as the steel cable shortens and its self-weight decreases, the reverse action of this torque will force the detection equipment to rotate continuously in the opposite direction.

[0003] There are two dangerous situations:

[0004] First, when the sampling and exploration equipment touches the bottom, the load-bearing of the steel cable is reduced. According to Hooke's law, the steel cable will retract when the tension decreases. At the moment of touching the bottom, since the steel cable is still in a taut state, it is not easy to get entangled. However, if it is lowered further, the steel cable will become slack, the tensile force will decrease, and a torsional force in the opposite direction to the previous one will be generated. At this time, the detection equipment touching the bottom cannot rotate freely to release the corresponding torque, and the slack steel cable will then twist and entangle. During the cable recovery process, the entangled part is pulled into a dead knot. While the steel cable is damaged, it also causes the detection equipment to be unable to pass through the A-frame pulley smoothly, resulting in the inability to carry out the cable recovery work of the detection equipment. The equipment for ocean exploration is usually very expensive, and there may even be no backup. The equipment damage and associated economic losses caused by the kinking of the steel cable are incalculable;

[0005] Second, after the steel cable is lowered several kilometers, its relative rigidity becomes very low, and it is very easy to generate self-excited resonance in the steel cable system. Although there is the damping effect of seawater movement, the resonance amplitude will not be infinitely amplified, but this resonance amplitude increase will still be several meters or even more than ten meters. When the oscillating motion moves upward, the steel cable in the taut state will become slack. After reaching the highest point, it will be re-tightened under the action of the equipment and its own gravity, and then sink to the bottom of the oscillating motion, and then start a new round of upward and downward movements, repeating in cycles. When the periodic oscillation descends to the bottom, although there is also an additional winding rotational torque generated by the pulling force of the steel cable being pulled down and tightened, it is not easy to generate entanglement in the tightened state. When it reaches the upper end of the oscillation, the lowest part of the steel cable becomes slack and the pulling force decreases, and a reverse rotational torque will be generated in the steel cable. If this torque is not released in a timely manner, the steel cable will become entangled. Especially when the weight-to-buoyancy ratio (weight in air ÷ buoyancy in water) of the ocean exploration equipment is close to 1, the sinking speed is already slow. At the highest point of resonance, it cannot sink in time, so the steel cable cannot be tightened in time, and the reverse torsional force cannot be released in time, resulting in the steel cable becoming entangled and forming a dead knot during the process of cable recovery. Summary of the Invention

[0006] In order to overcome the problem that the steel cable cannot release the additional winding rotational torque generated, resulting in the entanglement of the steel cable in the prior art, the present invention provides an ocean exploration load-bearing device, which can release the winding rotational torque generated by the steel cable in time and prevent the load-bearing seat from rotating with the steel cable.

[0007] To achieve the above object, the present invention adopts the following technical solution: An ocean exploration load-bearing device includes an optical cable, a steel cable is wrapped outside the optical cable, a load-bearing head is fixedly provided on the steel cable, a load-bearing seat is rotatably connected outside the load-bearing head, the load-bearing head can rotate around the axis of the optical cable relative to the load-bearing seat, the load-bearing head and the load-bearing seat are axially fixed, a detector is installed on the load-bearing seat, and the optical cable and the detector are optically and electrically connected through a rotating optoelectronic coupler.

[0008] After adopting the above technical solution, the present invention has the following advantages: By fixedly connecting the steel cable with the optical cable to the load-bearing head, and the load-bearing head and the load-bearing seat can rotate circumferentially, the detector connected to the load-bearing seat can rotate circumferentially with respect to the optical cable, avoiding the rotation of the detector due to the additional winding rotational torque generated by the steel cable when entering the water, and when the detector lands, the corresponding rotational torque can also be released; By optically and electrically connecting the optical cable and the detector through a rotating optoelectronic coupler, the rotation of the optical cable is avoided from affecting the transmission of optical and electrical signals and electricity.

[0009] Further, a universal joint structure is connected between the load-bearing seat and the load-bearing head. The universal joint structure enables the load-bearing head to rotate around the axis of the optical cable relative to the load-bearing seat, and enables the load-bearing seat to deflect at a certain angle relative to the axis of the steel cable.

[0010] With the foregoing technical solution, a universal joint structure is connected between the load-bearing seat and the load-bearing head, enabling the load-bearing seat to deflect at a certain angle relative to the axis of the steel cable. When the detector enters the water, the steel cable will sway horizontally due to the impact of seawater on the detector, and the steel cable deflects, resulting in a certain angle between its axis and the axis when it is vertical. The use of the universal joint structure can prevent the load-bearing seat from swaying with the steel cable, thus maintaining the stability and safety of the load-bearing seat.

[0011] Furthermore, the universal joint structure includes a universal ball head on the load-bearing head and a ball head cavity provided in the load-bearing seat and adapted to the universal ball head.

[0012] With the foregoing technical solution, spherical contact is achieved through the universal ball head and the ball head cavity, avoiding hard friction and reducing the frictional force, enabling the load-bearing seat to deflect at a certain angle relative to the axis of the steel cable. When the load-bearing head deflects due to the torsion of the steel cable and the impact of seawater, the load-bearing seat can be prevented from rotating accordingly, maintaining the stability and safety of the load-bearing seat.

[0013] Furthermore, the load-bearing head further includes a fixing sleeve and a connecting sleeve. The fixing sleeve is fixedly connected to the steel cable and is conical, and the small end of the fixing sleeve is away from the load-bearing seat. The connecting sleeve is sleeved outside the fixing sleeve, and the connection part is adapted to the fixing sleeve. The connecting sleeve wraps the rotating optoelectronic coupler inside and seals it.

[0014] With the foregoing technical solution, after the detector enters the water, the equipment and seawater will increase a certain dragging force on the steel cable, and the tensile force of the steel cable will increase. The cooperation of the fixing sleeve and the connecting sleeve is adopted. Since the fixing sleeve is conical, after the tensile force of the steel cable increases, the fixing sleeve and the connecting sleeve will be pulled tighter, thus increasing the strength of the relevant mechanism. And since the connecting sleeve wraps the rotating optoelectronic coupler inside and seals it, it can prevent the rotating optoelectronic coupler from contacting seawater, with a simple structure and convenient manufacturing.

[0015] Furthermore, the load-bearing head further includes a connecting sleeve and a closed cylinder. The connecting sleeve is detachably connected to the closed cylinder. The closed cylinder wraps outside the rotating optoelectronic coupler, and the optical cable penetrates into the closed cylinder to be connected to the rotating optoelectronic coupler.

[0016] With the foregoing technical solution, the rotating optoelectronic coupler is wrapped by the closed cylinder to isolate it from the outside world, which can prevent seawater from entering the rotating optoelectronic coupler. The optical cable penetrates into the closed cylinder to be connected to the rotating optoelectronic coupler to enable the transmission of optical and electrical signals and power.

[0017] Furthermore, the connecting sleeve and the closed cylinder are fixed by connecting screws.

[0018] With the foregoing technical solution, the connecting sleeve and the closed cylinder are fixed by the connecting screw, facilitating the disassembly and assembly between the connecting sleeve and the closed cylinder.

[0019] Further, one end of the closed cylinder is sealed by a closed seat, and the optical cable passes through the closed seat and is connected to the rotary optoelectronic coupler.

[0020] With the foregoing technical solution, one end of the closed cylinder is sealed by the closed seat, preventing the rotary optoelectronic coupler from being eroded by seawater.

[0021] Further, the closed seat and the optical cable are sealed by upper sealing glue.

[0022] With the foregoing technical solution, after the installation and calibration are completed, the last step is to seal the closed seat and the optical cable with upper sealing glue, further enhancing the sealing performance of the closed seat for the interior of the closed cylinder.

[0023] Further, a rotating assembly is provided between the load-bearing head and the output cable, and the load-bearing head rotates relative to the output cable through the rotating assembly.

[0024] With the foregoing technical solution, it is necessary to separate the output cable connected to the detector from the closed cylinder to prevent the closed cylinder from driving the output cable to rotate and avoid the output cable from being twisted and broken due to the winding torsion force.

[0025] Further, the rotating assembly is composed of a closed rotating seat, a bearing, and a rotating sealing ring. The closed rotating seat and the output cable are rotatably connected through the bearing, and the closed rotating seat and the output cable form a seal through the rotating sealing ring, with the rotating sealing ring outside the bearing.

[0026] With the foregoing technical solution, the rotating assembly realizes the relative rotation between the closed cylinder and the output cable through the bearing between the inner side wall of the closed cylinder and the output cable, and the closed rotating seat and the closed cylinder and the output cable respectively ensure the sealing performance inside the closed cylinder through the rotating sealing ring, preventing seawater from entering the closed cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following further illustrates the present invention with reference to the drawings:

[0028] Figure 1 It is a schematic diagram of an ocean exploration load-bearing device of the present invention;

[0029] Figure 2 It is an enlarged view of part A.

[0030] Description of the Drawings: 1. Optical cable; 11. Steel cable; 2. Load-bearing head; 21. Fixed sleeve; 22. Connecting sleeve; 3. Load-bearing seat; 31. Ball head cavity; 4. Rotary optoelectronic coupler; 5. Output cable; 6. Enclosed cylinder; 61. Enclosed seat; 62. Upper sealing glue; 7. Universal ball head; 8. Rotating assembly; 81. Enclosed rotating seat; 811. Sealing cover; 82. Bearing; 83. Rotary sealing ring; 84. Output claw sleeve; 85. Cable outlet sheath. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model.

[0032] The terms "first", "second", etc. (if any) in the description and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily imply the existence of "first". It should be understood that in the present utility model, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. It should be understood that in the present utility model, "a plurality of" means two or more. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y may represent: X exists alone, X and Y exist simultaneously, and Y exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. "Including X, Y, and Z", "including X, Y, Z" means that X, Y, and Z are all included, "including X, Y, or Z" means including any one of X, Y, and Z, and "including X, Y, and / or Z" means including any one or any two or three of X, Y, and Z.

[0033] The technical solutions of the present utility model will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be repeated in some embodiments.

[0034] Embodiment 1:

[0035] As Figures 1 to 2As shown in the figure, the utility model provides an ocean exploration load-bearing device, which includes an optical cable 1. The optical cable 1 is wrapped with a steel cable 11. A load-bearing head 2 is fixedly sleeved on the steel cable 11. A load-bearing seat 3 is rotatably connected to the outside of the load-bearing head 2. The load-bearing head 2 can rotate around the axis of the optical cable 1 relative to the load-bearing seat 3. The load-bearing head 2 and the load-bearing seat 3 are axially fixed. A detector is installed on the load-bearing seat 3. The optical cable 1 and the detector are optically and electrically connected through a rotary optoelectronic coupler 4.

[0036] After adopting the above technical solution, the utility model has the following advantages: By fixedly connecting the steel cable 11 with the optical cable 1 to the load-bearing head 2, and the load-bearing head 2 can rotate circumferentially with respect to the load-bearing seat 3, the detector connected to the load-bearing seat 3 can rotate circumferentially with respect to the optical cable 1, avoiding the detector from rotating due to the additional winding and rotating torque generated by the steel cable 11 when entering the water, and when the detector touches the ground, the corresponding rotating torque can also be released; The optical cable 1 and the detector are optically and electrically connected through a rotary optoelectronic coupler 4, avoiding the rotation of the optical cable 1 from affecting the transmission of optical and electrical signals and power.

[0037] Specifically, the detector is a deep-sea sampling detector; the end of the optical cable 1 is stripped of the steel cable 11, so that the steel cable 11 can be connected to the rotary optoelectronic coupler 4; In order to solve the signal transmission and safety problems between the optical cable 1 and the detector, a rotary optoelectronic coupler 4 is connected between them, disconnecting the direct mechanical connection with the output cable 5, and the optical and electrical signals and power are coupled and transmitted, isolating the mechanical rotation movement of the optical cable 1.

[0038] Furthermore, a universal joint structure is connected between the load-bearing seat 3 and the load-bearing head 2. The universal joint structure enables the load-bearing head 2 to rotate around the axis of the optical cable 1 relative to the load-bearing seat 3, and enables the load-bearing seat 3 to deflect at a certain angle relative to the axis of the steel cable 11.

[0039] Adopting the foregoing technical solution, a universal joint structure is connected between the load-bearing seat 3 and the load-bearing head 2, which enables the load-bearing seat 3 to deflect at a certain angle relative to the axis of the steel cable 11. When the detector enters the water, the steel cable 11 will shake laterally due to the impact of seawater on the detector, and the steel cable 11 deflects, and an angle will be generated between its axis and the axis when it is vertical. The universal joint structure can avoid the load-bearing seat 3 from shaking together with the steel cable 11, thus maintaining the stability and safety of the load-bearing seat 3.

[0040] Furthermore, the universal joint structure includes a universal ball head 7 on the load-bearing head 2, and a ball head cavity 31 adapted to the universal ball head 7 is provided in the load-bearing seat 3; or, other universal joints that can enable the load-bearing head 2 to rotate around the axis of the steel cable 11 relative to the load-bearing seat 3 and enable the load-bearing seat 3 to deflect at a certain angle relative to the axis of the steel cable 11.

[0041] With the foregoing technical solution, spherical contact is achieved through the universal ball head 7 and the ball head cavity 31, avoiding hard friction, reducing the frictional force, enabling the load-bearing seat 3 to deflect at a certain angle relative to the axis of the steel cable 11. When the load-bearing head 2 deflects due to the torsion of the steel cable 11 and the drag of seawater, it can prevent the load-bearing seat 3 from rotating accordingly, maintaining the stability and safety of the load-bearing seat 3. Moreover, with the cooperation of the universal ball head 7 and the ball head cavity 31, axial fixation between the load-bearing seat 3 and the optical cable 1 can be directly ensured.

[0042] Specifically, the load-bearing seat further includes a load-bearing seat pressing plate. The load-bearing seat pressing plate fixes the ball head cavity 31 and the universal ball head 7 within the support seat. The universal ball head 7 is constrained by the supporting spherical cavity, but can rotate freely in all directions within the spherical surface, forming a spherical kinematic pair. In this way, flexible and free rotation can be achieved between the steel cable 11 and the support seat, that is, the rotational torque generated by the steel cable 11 can be released immediately, avoiding the entanglement of the steel cable 11 and also avoiding the continuous rotation of the sampling detection device during the lowering and cable retraction processes. At the same time, the steel cable 11 and the support seat can swing freely to match the attitude angles required when the steel cable 11 drags the detection device to work.

[0043] Furthermore, the load-bearing head 2 further includes a fixing sleeve 21 and a connecting sleeve 22. The fixing sleeve 21 is fixedly connected to the steel cable 11 and is conical, and the small end of the fixing sleeve 21 is away from the load-bearing seat 3. The connecting sleeve 22 is sleeved outside the fixing sleeve 21, and the connection part is adapted to the fixing sleeve 21.

[0044] With the foregoing technical solution, after the detector enters the water, the equipment and seawater will increase a certain drag force on the steel cable 11, and the tensile force of the steel cable 11 will increase. With the cooperation of the fixing sleeve 21 and the connecting sleeve 22, since the fixing sleeve 21 is conical, after the tensile force of the steel cable 11 increases, the fixing sleeve 21 and the connecting sleeve 22 will be pulled tighter, thus increasing the strength of the relevant mechanism.

[0045] Furthermore, the connecting sleeve 22 further includes a connecting sleeve 22 and a closed cylinder 6. The connecting sleeve 22 is detachably connected to the closed cylinder 6. The closed cylinder 6 wraps around the rotating optoelectronic coupler 4, and the optical cable 1 passes through the closed cylinder 6 and is connected to the rotating optoelectronic coupler 4.

[0046] With the foregoing technical solution, the rotating optoelectronic coupler 4 is wrapped by the closed cylinder 6 to isolate it from the outside world, which can prevent seawater from entering the rotating optoelectronic coupler 4. The optical cable 1 passes through the closed cylinder 6 and is connected to the rotating optoelectronic coupler 4 to enable the transmission of optical and electrical signals and power.

[0047] Specifically, since it works in seawater, the seawater will affect the photoelectric signals and power transmission of the rotary optoelectronic coupler 4 and will also erode the components of the optoelectronic coupler. Therefore, the rotary optoelectronic coupler 4 is placed in the closed cylinder 6 to prevent the components from being eroded by seawater.

[0048] Furthermore, a rotating assembly 8 is provided between the load-bearing head 2 and the output cable 5, and the load-bearing head 2 rotates relative to the output cable 5 through the rotating assembly 8.

[0049] With the foregoing technical solution, it is necessary to separate the output cable 5 connected to the detector from the closed cylinder 6 to prevent the closed cylinder 6 from driving the output cable 5 to rotate and avoid the output cable 5 from being twisted and broken due to the winding torsion force.

[0050] Furthermore, the rotating assembly 8 is composed of a closed rotating seat 81, a bearing 82, and a rotary seal ring 83. The closed rotating seat 81 and the output cable 5 are rotatably connected through the bearing 82, and the closed rotating seat 81 and the output cable 5 are sealed through the rotary seal ring 83. The rotary seal ring 83 is on the outside of the bearing 82.

[0051] With the foregoing technical solution, the rotating assembly 8 realizes the relative rotation between the closed cylinder 6 and the output cable 5 through the bearing 82 between the inner side wall of the closed rotating seat 81 and the output cable 5, and the seal between the closed rotating seat 81 and the output cable 5 is ensured by the rotary seal ring 83 to prevent seawater from entering the closed cylinder 6.

[0052] Specifically, since it is desired that the detector does not rotate, there is a relative rotation between the output cable 5 and the coupled input part of the rotary optoelectronic coupler 4. The present invention provides a set of rotating assemblies 8 at one end of the closed cylinder 6. The rotating assembly 8 includes: a closed rotating seat 81, a rolling bearing 82, an output claw sleeve 84, an outgoing cable sheath 85, a rotary seal ring 83, and a lower rubber seal; the closed rotating seat 81 is divided into a body and a sealing cover 811 fixed to the body by bolts, and the output claw sleeve 84 is sleeved on the output part of the rotary optoelectronic coupler. The output claw sleeve is supported by the rolling bearing 82, and the output cable of the rotary optoelectronic coupler 4 passes through the output claw sleeve, allowing the output cable to rotate relative to the inside of the closed cylinder 6 stably, easily, and flexibly. The lower rotating seat provides axial fixation for the rolling bearing 82 and provides installation support for the rotary seal ring 83. The rotary seal ring 83 allows the output claw sleeve to rotate easily but still seals and isolates seawater; the outgoing cable sheath provides protection for the output cable 5 to prevent the outgoing cable from being bent and damaged; the lower rubber seal serves as a seal. After confirming that the installation and debugging are appropriate, seal the fluid inlet and outlet of the output cable 5 with glue and also provide axial fixation for the output cable 5.

[0053] Similarly, after finally confirming that the installation and debugging are appropriate, glue seals should also be applied to seal the inlets and outlets of the optical cable 1 and also provide axial fixation for the optical cable 1.

[0054] Specifically describe the sealed isolation structure of the rotary optoelectronic coupler 4: At the end of the optical cable 1, a part of the external steel cable 11 is removed, leaving a section of the optical cable 1. A part of the steel cable 11 is fixed by passing through the fixing sleeve 21. The optical cable 1 passes through the upper end of the closed cylinder 6 and is connected to the input part of the rotary optoelectronic coupler, and is connected to the rotary optoelectronic coupler 4. Then, the optoelectronic signal or power is coupled and output through the rotary optoelectronic coupler 4, and after being converted by the rotary optoelectronic coupler 4, it is connected to the output cable 5 and finally connected to the sampling detection device.

[0055] Furthermore, the connecting sleeve 22 and the closed cylinder 6 are fixed by connecting screws.

[0056] Adopting the foregoing technical solution, the connecting sleeve 22 and the closed cylinder 6 are fixed by connecting screws, which facilitates the disassembly and assembly between the connecting sleeve 22 and the closed cylinder 6.

[0057] Furthermore, one end of the closed cylinder 6 is sealed by a closed seat 61, and the optical cable 1 passes through the closed seat 61 and is connected to the rotary optoelectronic coupler 4.

[0058] Adopting the foregoing technical solution, one end of the closed cylinder 6 is sealed by the closed seat 61, avoiding the rotary optoelectronic coupler 4 from being eroded by seawater.

[0059] Furthermore, the closed seat 61 and the optical cable 1 are sealed by an upper sealing glue 62.

[0060] Adopting the foregoing technical solution, after the installation and calibration are completed, finally, the closed seat 61 and the optical cable 1 are sealed by the upper sealing glue 62, further improving the sealing performance of the closed seat 61 for the inside of the closed cylinder 6.

[0061] Embodiment 2:

[0062] The difference from the above Embodiment 1 is that the connecting sleeve 22 is extended to wrap and seal the rotary optoelectronic coupler 4 inside. At this time, since the connecting sleeve wraps and seals the rotary optoelectronic coupler inside, it can avoid the rotary optoelectronic coupler from contacting seawater, and the structure is simple and easy to manufacture.

[0063] In addition to the above preferred embodiments, the present invention has other implementation manners. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection claimed by the present invention.

Claims

1. A marine exploration load-bearing device, comprising an optical cable, wherein the optical cable is wrapped with a steel cable, characterized in that: A load-bearing head is provided on the fixed sleeve of the steel cable, and a load-bearing seat is rotatably connected to the load-bearing head. The load-bearing head and the load-bearing seat are axially fixed. A detector is installed on the load-bearing seat, and the optical cable and the detector are photoelectrically connected through a rotating photoelectric coupler.

2. The marine exploration bearing device according to claim 1, characterized in that: A universal joint structure is connected between the load-bearing seat and the load-bearing head, and the universal joint structure enables the load-bearing head to rotate around the axis of the optical cable relative to the load-bearing seat, and enables the load-bearing seat to deflect at a certain angle relative to the axis of the steel cable.

3. The marine exploration bearing device according to claim 2, characterized in that: The universal joint structure comprises a universal ball head on the bearing head, and a ball head cavity adapted to the universal ball head is arranged in the bearing seat.

4. The marine exploration bearing device according to claim 1, characterized in that: The load-bearing head also includes a fixing sleeve and a connecting sleeve. The fixing sleeve is fixedly connected to the steel cable, and the fixing sleeve is conical, and the small end of the fixing sleeve is away from the load-bearing seat. The connecting sleeve is arranged on the outside of the fixing sleeve, and the connection part is adapted to the fixing sleeve. The connecting sleeve wraps the rotating photoelectric coupler inside and seals it.

5. The marine exploration bearing device according to claim 1, characterized in that: The load-bearing head also includes a connecting sleeve and a closed cylinder, wherein the connecting sleeve is detachably connected to the closed cylinder, the closed cylinder is wrapped outside the rotating photoelectric coupler, and the optical cable penetrates into the closed cylinder to be connected to the rotating photoelectric coupler.

6. The marine exploration bearing device according to claim 5, characterized in that: The connecting sleeve and the closed cylinder are fixed by a connecting screw.

7. The marine exploration bearing device according to claim 5, characterized in that: One end of the closed cylinder is sealed by a closed seat, and the optical cable passes through the closed seat to be connected with the rotating photoelectric coupler.

8. The marine exploration bearing device according to claim 7, characterized in that: The sealing seat and the optical cable are sealed by applying sealing glue.

9. The marine exploration bearing device according to claim 1, characterized in that: A rotating assembly is provided between the load-bearing head and the output optical cable, and the load-bearing head rotates relative to the output optical cable through the rotating assembly.

10. The marine exploration bearing device according to claim 9, characterized in that: The rotating assembly consists of a closed rotating seat, a bearing and a rotating sealing ring. The closed rotating seat and the output optical cable are rotatably connected through the bearing. The closed rotating seat and the output optical cable form a seal through the rotating sealing ring, and the rotating sealing ring is outside the bearing.

Images