A lifting device with adjustable lifting point position and a method for lifting and deploying underwater equipment.

Abstract

This invention relates to the field of underwater equipment hoisting technology, and discloses a hoisting device with adjustable hoisting point position and a method for hoisting and deploying underwater equipment. The hoisting device includes a hoisting column, an umbilical cable, a connecting seat, a sliding seat, a connecting beam, a drive mechanism, a controller, and an inclination sensor. The top of the hoisting column has a vertically arranged connecting through hole that matches the umbilical cable. The umbilical cable passes through the connecting through hole and extends to the outside. The umbilical cable is fixedly connected to the hoisting column. The hoisting column is connected to the sliding seat through the connecting seat. The sliding seat has a sliding groove that slides with the connecting beam. The drive mechanism is mounted on the connecting beam and is connected to the sliding seat, enabling it to drive the sliding seat and the connecting beam to move laterally relative to each other. The controller is electrically connected to the inclination sensor and the drive mechanism, respectively. When using this device to hoist and lower underwater equipment into the water or to retrieve it from underwater, the position of the hoisting point of the underwater equipment can be adjusted to ensure stable hoisting.

Description

Technical Field

[0001] This invention relates to the field of underwater equipment hoisting technology, and in particular to a hoisting device with adjustable hoisting point position and a method for hoisting and deploying underwater equipment. Background Technology

[0002] Underwater equipment refers to equipment designed to operate in underwater environments. It can be used for various purposes, including scientific research, resource exploration, subsea construction, and rescue operations. This equipment typically requires resistance to water pressure and corrosion, excellent sealing, and a precise control system. Underwater equipment is connected to an umbilical cable, which provides power and transmits signals. Additionally, lifting equipment can use the umbilical cable to suspend or lift the underwater equipment. Generally, the lifting point of the underwater equipment is fixed during lifting. However, in actual use, the position of the underwater equipment's center of gravity can change. For example, some underwater equipment uses a modular design; after replacing working parts (usually by adding or removing components laterally, such as a robotic arm), the position of the underwater equipment's center of gravity will change. Similarly, when underwater equipment is gripping or carrying items for lifting and recovery, the weight of the items will cause the underwater equipment's center of gravity to shift. When the position of the underwater equipment's center of gravity and the lifting point are not on the same vertical line, the underwater equipment will tilt during lifting, making it unstable and affecting the umbilical cable. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a lifting device with adjustable lifting point position that can stably lift underwater equipment and a method for lifting and lowering underwater equipment.

[0004] To address the aforementioned technical problems, this invention provides a lifting device with adjustable lifting point position, comprising a lifting column, an umbilical cable, a connecting seat, a sliding seat, a connecting beam, a drive mechanism, a controller, and an inclination sensor for detecting the lateral levelness of the connecting beam. The top of the lifting column has a vertically aligned connecting through hole that matches the umbilical cable. The umbilical cable passes through the connecting through hole and extends to the outside. The umbilical cable is fixedly connected to the lifting column. The top of the connecting seat is rotatably connected to the bottom of the lifting column, with the rotation axis arranged laterally. The bottom of the connecting seat is rotatably connected to the top of the sliding seat, with the rotation axis arranged longitudinally. The sliding seat has a sliding groove that slides with the connecting beam. The drive mechanism is mounted on the connecting beam and is connected to the sliding seat, enabling it to drive the sliding seat and the connecting beam to move laterally relative to each other. The controller is electrically connected to both the inclination sensor and the drive mechanism.

[0005] As a preferred embodiment of the present invention, the top of the connecting seat is provided with a first connecting groove arranged in the longitudinal direction, the bottom of the lifting column is provided with a first connecting block, the first connecting block is inserted into the first connecting groove and is rotatably connected to the two sides of the first connecting groove through a first connecting shaft arranged in the transverse direction, the top of the sliding seat is provided with a second connecting groove arranged in the transverse direction, the bottom of the connecting seat is provided with a second connecting block, the second connecting block is inserted into the second connecting groove and is rotatably connected to the two sides of the second connecting groove through a second connecting shaft arranged in the longitudinal direction.

[0006] As a preferred embodiment of the present invention, limiting blocks are respectively provided on both sides of the longitudinal direction of the first connecting groove.

[0007] As a preferred embodiment of the present invention, buffer springs are respectively provided on both sides of the second connecting groove, one end of the buffer spring is connected to the bottom of the second connecting groove, and the other end of the buffer spring is connected to the bottom of the connecting seat.

[0008] As a preferred embodiment of the present invention, the top of the connector is provided with a connecting groove corresponding to the position of the connecting through hole, and the bottom of the connector is provided with a cable outlet groove communicating with the bottom end of the connecting groove, and the two sides of the cable outlet groove are open in the lateral direction.

[0009] As a preferred embodiment of the present invention, the middle part of the connecting through hole is provided with a tapered portion that gradually expands from top to bottom, the outer side of the umbilical cable is provided with an armor layer, the outer side of the armor layer is provided with a connecting portion that expands outward, the connecting portion is located inside the tapered portion, the tapered portion is filled with fastening adhesive, and the connecting portion is fixedly connected to the inner sidewall of the tapered portion by the fastening adhesive.

[0010] As a preferred embodiment of the present invention, the driving mechanism includes a movable support, a fixed support, and a hydraulic cylinder. The movable support is fixed to the top of the sliding seat, the fixed support is fixed to the top of the connecting beam, the hydraulic cylinder is arranged laterally, one end of the hydraulic cylinder is connected to the movable support, the other end of the hydraulic cylinder is hinged to the fixed support, and the tilt sensor is electrically connected to the hydraulic system of the hydraulic cylinder.

[0011] As a preferred embodiment of the present invention, the top of the sliding groove is provided with a first slider, the bottom of the first slider is slidably connected to the top of the connecting beam, and the bottom of the sliding groove is provided with a second slider, the top of the second slider is slidably connected to the bottom of the connecting beam.

[0012] As a preferred embodiment of the present invention, the sliding seat includes an upper housing and a lower housing, which are connected by a connector. The bottom of the upper housing is provided with a first groove, and the top of the lower housing is provided with a second groove. The first groove and the second groove are joined together to form the sliding through groove.

[0013] Meanwhile, the present invention also provides a method for suspending and deploying underwater equipment using the above-mentioned lifting device with adjustable lifting point position, comprising the following steps:

[0014] S1: Install the controller on the underwater equipment, electrically connect the umbilical cable to the underwater equipment, and connect the controller to the umbilical cable through the underwater equipment;

[0015] S2: Fix the connecting beam to the top of the underwater equipment, wherein the connecting beam is arranged along the transverse centerline of the underwater equipment;

[0016] S3: The lifting equipment lifts the underwater equipment through the umbilical cable. At this time, the controller controls the drive mechanism to drive the sliding seat and the connecting beam to move laterally relative to each other based on the lateral levelness of the connecting beam detected by the tilt sensor, so that the connecting beam rotates to a horizontal state.

[0017] S4: The lifting equipment gradually lowers the underwater equipment to the seabed via the umbilical cable. Once the underwater equipment has been lowered to the seabed, the umbilical cable is released.

[0018] S5: After the underwater equipment completes its work, the lifting equipment lifts the underwater equipment through the umbilical cable. At this time, the controller controls the drive mechanism to drive the sliding seat and the connecting beam to move laterally relative to each other based on the lateral levelness of the connecting beam detected by the tilt sensor, so that the connecting beam rotates to a horizontal state.

[0019] S6: The lifting equipment gradually lifts the underwater equipment through the umbilical cable until the underwater equipment is lifted off the water surface.

[0020] This invention provides an adjustable lifting point position hoisting device and a method for hoisting and deploying underwater equipment. Compared with the prior art, its advantages are as follows: The drive mechanism of this device can drive the sliding seat and the connecting beam to slide relative to each other along the length direction of the connecting beam, thereby moving the lifting column and umbilical cable, and thus adjusting the position of the lifting point of the underwater equipment. When using this device to hoist and lower the underwater equipment into the water or to retrieve it from underwater, the tilt sensor will detect the lateral levelness of the connecting beam and feed it back to the controller. The controller will then control the drive mechanism according to the detected tilt angle to adjust the position of the lifting point of the underwater equipment until the connecting beam rotates to a horizontal state, so as to ensure that the underwater equipment is hoisted smoothly. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a cross-sectional view of the lifting column of the present invention;

[0024] Figure 4 This is a structural diagram of the connector of the present invention;

[0025] Figure 5 This is a structural diagram of the upper housing of the present invention;

[0026] Figure 6 This is a bottom structural diagram of the upper housing of the present invention;

[0027] Figure 7 This is a structural diagram of the lower housing of the present invention;

[0028] In the diagram, 1. Lifting column; 11. Connecting through hole; 111. Conical part; 12. First connecting block; 121. First connecting shaft; 2. Umbilical cable; 21. Connecting part; 3. Connecting seat; 31. First connecting groove; 311. Limiting block; 32. Second connecting block; 321. Second connecting shaft; 33. Connecting through groove; 34. Outlet groove; 4. Sliding seat; 41. Sliding through groove; 411. First slider; 412. Second slider; 42. Second connecting groove; 421. Buffer spring; 43. Upper housing; 431. First groove; 44. Lower housing; 441. Second groove; 5. Connecting crossbeam; 6. Drive mechanism; 61. Movable support; 62. Fixed support; 63. Hydraulic cylinder; 7. Controller; 8. Tilt sensor. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] like Figure 1-7 As shown, a preferred embodiment of the present invention provides a lifting device with adjustable lifting point position, including a lifting column 1, an umbilical cable 2, a connecting seat 3, a sliding seat 4, a connecting beam 5, a drive mechanism 6, a controller 7, and an inclination sensor 8 for detecting the lateral levelness of the connecting beam 5, i.e., detecting the tilt angle of the connecting beam 5 relative to the lateral direction. Generally, the inclination sensor 8 is installed on the connecting beam 5. The top of the lifting column 1 is provided with a vertically arranged connecting through hole 11 that matches the umbilical cable 2. The umbilical cable 2 passes through the connecting through hole 11 and extends to the outside. One end of the umbilical cable 2 extending out of the connecting through hole 11 is used for connection with underwater equipment. 2 is fixedly connected to the lifting column 1, that is, the lifting column 1 can be lifted by lifting the umbilical cable 2. The top of the connecting seat 3 is rotatably connected to the bottom of the lifting column 1, and the rotation axis is set in the transverse direction. The bottom of the connecting seat 3 is rotatably connected to the top of the sliding seat 4, and the rotation axis is set in the longitudinal direction. The sliding seat 4 is provided with a sliding through groove 41 that slides with the connecting crossbeam 5, that is, the sliding seat 4 can slide on the connecting crossbeam 5. The drive mechanism 6 is installed on the connecting crossbeam 5. The drive mechanism 6 is connected to the sliding seat 4 and can drive the sliding seat 4 and the connecting crossbeam 5 to move relatively laterally. The controller 7 is electrically connected to the tilt sensor 8 and the drive mechanism 6 respectively.

[0032] The working principle of this embodiment is as follows: In use, the connecting beam 5 is fixed horizontally to the top of the underwater equipment, and there is space between the top of the underwater equipment and the top of the connecting beam 5 for the sliding seat 4 to slide. When the underwater equipment is lifted, if the underwater equipment tilts relative to the horizontal direction, the tilt sensor 8 detects the tilt angle of the connecting beam 5 and feeds it back to the controller 7. The controller 7 controls the drive mechanism 6 according to the detected tilt angle, thereby driving the sliding seat 4 and the connecting beam 5 to move horizontally relative to each other (in the length direction of the connecting beam 5), thereby adjusting the position of the lifting point of the underwater equipment until the connecting beam 5 rotates to a horizontal state. At this time, the center of gravity of the underwater equipment and the position of the lifting point are on the same vertical line, ensuring the stability of the underwater equipment when it is lifted. When the underwater equipment is lowered into the water or retrieved from the water, the underwater equipment is easily affected by the water flow and will swing. At this time, the sliding seat 4 will rotate relative to the connecting seat 3 along the longitudinal axis, and the connecting seat 3 will rotate relative to the lifting column 1 along the horizontal axis, thereby reducing the impact on the lifting column 1 and the umbilical cable 2.

[0033] Furthermore, the present invention also provides a method for deploying underwater equipment using this embodiment, comprising the following steps:

[0034] S1: Install the controller 7 on the underwater equipment and electrically connect the umbilical cable 2 to the underwater equipment. That is, connect one end of the umbilical cable 2 that passes through the lifting column 1 to the underwater equipment to achieve electrical connection between the umbilical cable 2 and the underwater equipment. The controller 7 is electrically connected to the umbilical cable 2 through the underwater equipment, and the other end of the umbilical cable 2 is electrically connected to the terminal device, thereby realizing the transmission of current and signals.

[0035] S2: Fix the connecting beam 5 to the top of the underwater equipment. The connecting beam 5 is set along the transverse centerline of the underwater equipment (in this embodiment, the transverse direction of the equipment refers to the length direction of the equipment), that is, the connecting beam 5 is in a horizontal state. It can be understood that there is a space between the top of the underwater equipment and the top of the connecting beam 5 that allows the sliding seat 4 to slide. For example, a support column is set at the bottom of the connecting beam 5, and the support column is fixedly connected to the connecting beam 5 and the underwater equipment respectively.

[0036] S3: The underwater equipment is lifted using the umbilical cable 2. At this time, the controller 7 controls the drive mechanism 6 to drive the sliding seat 4 to move laterally based on the lateral levelness of the connecting beam 5 detected by the tilt sensor 8, so that the connecting beam 5 rotates to a horizontal state. Since the center of gravity of the underwater equipment and the lifting point may not be on the same vertical line during initial installation, and the position of the center of gravity of the underwater equipment may change due to the addition or removal of components (the center of gravity shifts laterally), that is, the center of gravity of the underwater equipment and the lifting point are not on the same vertical line. Therefore, the tilt sensor 8 detects the lateral levelness of the connecting beam 5, and controls the drive mechanism 6 according to the detected structure to drive the sliding seat 4 and the connecting beam 5 to move laterally relative to each other, thereby adjusting the position of the lifting point of the underwater equipment. When the lifting point and the center of gravity of the underwater equipment are on the same vertical line (on the axis of the connecting through hole 11), the connecting beam 5 is in a horizontal state, so that the underwater equipment can be lifted smoothly.

[0037] S4: The lifting equipment gradually lowers the underwater equipment to the seabed via the umbilical cable 2. Once the underwater equipment is lowered to the seabed, the umbilical cable 2 is released, meaning that the umbilical cable 2 no longer bears the weight of the underwater equipment, allowing the underwater equipment to operate underwater.

[0038] S5: After the underwater equipment completes its work, the lifting equipment lifts the underwater equipment through the umbilical cable 2. At this time, the controller 7 controls the drive mechanism 6 to drive the sliding seat 4 to move laterally based on the lateral levelness of the connecting beam 5 detected by the tilt sensor 8, so that the connecting beam 5 rotates to a horizontal state. Since the underwater equipment may change its center of gravity position due to clamping or carrying items after completing its work (the center of gravity shifts laterally), the center of gravity of the underwater equipment is not on the same vertical line as the lifting point. Therefore, the position of the lifting point of the underwater equipment is adjusted, and the connecting beam 5 rotates to a horizontal state, so that the underwater equipment can be lifted smoothly.

[0039] S6: The lifting equipment gradually lifts the underwater equipment through the umbilical cable 2 until the underwater equipment is lifted off the water surface, thereby recovering the underwater equipment.

[0040] When this method lifts and lowers underwater equipment into or retrieves it from underwater, the tilt sensor 8 detects the lateral levelness of the connecting beam 5 and sends the information back to the controller 7. The controller 7 then controls the drive mechanism 6 based on the detected tilt angle, thereby driving the sliding seat 4 and the connecting beam 5 to move laterally relative to each other. This adjusts the position of the lifting point of the underwater equipment until the connecting beam 5 rotates to a horizontal position, ensuring that the underwater equipment is lifted smoothly.

[0041] For example, the top of the connecting seat 3 is provided with a first connecting groove 31 arranged longitudinally, and the bottom of the lifting column 1 is provided with a first connecting block 12. The first connecting block 12 is inserted into the first connecting groove 31 and is rotatably connected to the lateral sides of the first connecting groove 31 by a first connecting shaft 121 arranged laterally, thereby realizing the rotatable connection between the connecting seat 3 and the lifting column 1. It can be understood that there is space on both sides of the longitudinal direction of the first connecting groove 31 for the lifting column 1 to rotate, and the lateral width of the first connecting groove 31 is adapted to the lateral dimension of the first connecting block 12 to prevent the first connecting block 12 from rotating laterally. The sliding seat 4 has a second connecting groove 42 arranged horizontally at its top, and a second connecting block 32 is provided at the bottom of the connecting seat 3. The second connecting block 32 is inserted into the second connecting groove 42 and is rotatably connected to the longitudinal sides of the second connecting groove 42 by a second connecting shaft 321 arranged vertically, thereby realizing the rotatable connection between the connecting seat 3 and the sliding seat 4. It can be understood that there is space on both sides of the second connecting groove 42 that allows the connecting seat 3 to rotate. The longitudinal width of the second connecting groove 42 is compatible with the longitudinal dimension of the second connecting block 32 to prevent the second connecting block 32 from shifting longitudinally.

[0042] For example, limit blocks 311 are provided on both sides of the longitudinal direction of the first connecting groove 31. When the underwater equipment is affected by the water flow and causes longitudinal sway, the connecting seat 3 will rotate around the axis of the first connecting shaft 121. The limit blocks 311 are set to limit the rotation and prevent the umbilical cable 2 from being affected by the excessive rotation amplitude of the connecting seat 3 (the umbilical cable 2 is scratched and worn by the underwater equipment, or the umbilical cable 2 is entangled with the equipment structure).

[0043] For example, buffer springs 421 are provided on both sides of the second connecting groove 42. One end of the buffer spring 421 is connected to the bottom of the second connecting groove 42, and the other end of the buffer spring 421 is connected to the bottom of the connecting seat 3. When the underwater equipment is affected by the water flow and swings laterally, the sliding seat 4 will rotate around the axis of the second connecting shaft 321. The buffer spring 421 can play a buffering role. In addition, after the umbilical cable 2 is loosened, the buffer spring 421 can help the connecting seat 3 and the sliding seat 4 to remain in the initial state, thereby preventing the connecting seat 3 from rotating and tilting, causing the umbilical cable 2 to come into contact with the underwater equipment, and avoiding any impact on the umbilical cable 2.

[0044] For example, the top of the connector 3 is provided with a connecting groove 33 corresponding to the position of the connecting through hole 11, and the bottom of the connector 3 is provided with a cable outlet groove 34 communicating with the bottom end of the connecting groove 33. The two sides of the cable outlet groove 34 are open. The umbilical cable 2 passes through the connecting through hole 11, the connecting groove 33 and the cable outlet groove 34 in sequence, and extends out to the outside from the opening of the cable outlet groove 34, so as to facilitate the connection of the umbilical cable 2 with the underwater equipment.

[0045] For example, the middle of the connecting through hole 11 is provided with a tapered portion 111 that gradually expands from top to bottom. The outer side of the umbilical cable 2 is provided with an armor layer. The outer side of the armor layer is provided with a connecting portion 21 that expands outward. The connecting portion 21 is located inside the tapered portion 111. Generally, in actual operation, the armor wire on the outer side of the umbilical cable 2 located inside the tapered portion 111 is cut and stripped, and it is expanded outward into a trumpet shape to form the connecting portion 21. The tapered portion 111 is filled with fastening glue. The connecting portion 21 is fixedly connected to the inner sidewall of the tapered portion 111 by the fastening glue, so that the connection between the umbilical cable 2 and the lifting column 1 is tight.

[0046] For example, the drive mechanism 6 includes a movable support 61, a fixed support 62, and a hydraulic cylinder 63. The movable support 61 is fixed to the top of the sliding seat 4, and the fixed support 62 is fixed to the top of the connecting beam 5. The hydraulic cylinder 63 is arranged laterally, with one end connected to the movable support 61 and the other end hinged to the fixed support 62. The tilt sensor 8 is electrically connected to the hydraulic system of the hydraulic cylinder 63. The telescopic shaft of the hydraulic cylinder 63 can extend and retract laterally, thereby driving the sliding seat 4 to move laterally. In this embodiment, the hydraulic cylinder 63 is provided with a position sensor for detecting the movement position of the telescopic rod of the hydraulic cylinder 63. The position sensor is electrically connected to the controller 7. When the tilt sensor 8 feeds back the detected structure to the controller 7, the controller 7 calculates the required displacement of the telescopic rod of the hydraulic cylinder 63. When the drive mechanism 6 drives the telescopic rod of the hydraulic cylinder 63 to extend and retract, the position sensor detects whether the telescopic rod of the hydraulic cylinder 63 has moved into place.

[0047] For example, the top of the sliding groove 41 is provided with a first slider 411, the bottom of the first slider 411 is slidably connected to the top of the connecting beam 5, and the bottom of the sliding groove 41 is provided with a second slider 412, the top of the second slider 412 is slidably connected to the bottom of the connecting beam 5, which helps the sliding seat 4 to slide relative to the connecting beam 5.

[0048] For example, the sliding seat 4 includes an upper housing 43 and a lower housing 44, which are connected by a connector (such as a bolt). The bottom of the upper housing 43 is provided with a first groove 431, and the top of the lower housing 44 is provided with a second groove 441. The first groove 431 and the second groove 441 are joined together to form a sliding through groove 41, which facilitates the assembly and connection of the sliding seat 4 with the connecting beam 5.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A hoisting device with adjustable lifting point position, characterized in that: The device includes a lifting column, an umbilical cable, a connecting seat, a sliding seat, a connecting beam, a drive mechanism, a controller, and an inclination sensor for detecting the lateral levelness of the connecting beam. The top of the lifting column has a vertically aligned connecting through hole that matches the umbilical cable. The umbilical cable passes through the connecting through hole and extends to the outside. The umbilical cable is fixedly connected to the lifting column. The top of the connecting seat is rotatably connected to the bottom of the lifting column, with the rotation axis arranged laterally. The bottom of the connecting seat is rotatably connected to the top of the sliding seat, with the rotation axis arranged longitudinally. The sliding seat has a sliding groove that slides with the connecting beam. The drive mechanism is mounted on the connecting beam and is connected to the sliding seat, enabling it to drive the sliding seat and the connecting beam to move laterally relative to each other. The controller is electrically connected to the inclination sensor and the drive mechanism, respectively. The top of the connecting seat is provided with a first connecting groove arranged in the longitudinal direction, and the bottom of the lifting column is provided with a first connecting block. The first connecting block is inserted into the first connecting groove and is rotatably connected to the two sides of the first connecting groove through a first connecting shaft arranged in the transverse direction. The top of the sliding seat is provided with a second connecting groove arranged in the transverse direction, and the bottom of the connecting seat is provided with a second connecting block. The second connecting block is inserted into the second connecting groove and is rotatably connected to the two sides of the second connecting groove through a second connecting shaft arranged in the longitudinal direction. The drive mechanism includes a movable support, a fixed support, and a hydraulic cylinder. The movable support is fixed to the top of the sliding seat, the fixed support is fixed to the top of the connecting beam, the hydraulic cylinder is arranged laterally, one end of the hydraulic cylinder is connected to the movable support, the other end of the hydraulic cylinder is hinged to the fixed support, and the tilt sensor is electrically connected to the hydraulic system of the hydraulic cylinder.

2. The lifting device with adjustable lifting point position according to claim 1, characterized in that: Limiting blocks are provided on both sides of the longitudinal direction of the first connecting groove.

3. The lifting device with adjustable lifting point position according to claim 1, characterized in that: The second connecting groove is provided with buffer springs on both sides of the transverse direction. One end of the buffer spring is connected to the bottom of the second connecting groove, and the other end of the buffer spring is connected to the bottom of the connecting seat.

4. The lifting device with adjustable lifting point position according to claim 1, characterized in that: The top of the connector is provided with a connecting groove corresponding to the position of the connecting through hole, and the bottom of the connector is provided with a cable outlet groove communicating with the bottom end of the connecting groove. The two sides of the cable outlet groove are open in the lateral direction.

5. The lifting device with adjustable lifting point position according to claim 1, characterized in that: The connecting through hole has a tapered portion that gradually expands from top to bottom in the middle. The outer side of the umbilical cable has an armor layer. The outer side of the armor layer has a connecting portion that expands outward. The connecting portion is located inside the tapered portion. The tapered portion is filled with fastening glue. The connecting portion is fixedly connected to the inner wall of the tapered portion through the fastening glue.

6. The lifting device with adjustable lifting point position according to claim 1, characterized in that: The top of the sliding groove is provided with a first slider, the bottom of the first slider is slidably connected to the top of the connecting beam, and the bottom of the sliding groove is provided with a second slider, the top of the second slider is slidably connected to the bottom of the connecting beam.

7. The lifting device with adjustable lifting point position according to claim 1, characterized in that: The sliding seat includes an upper housing and a lower housing, which are connected by a connector. The bottom of the upper housing is provided with a first groove, and the top of the lower housing is provided with a second groove. The first groove and the second groove are joined together to form the sliding through groove.

8. A method for suspending and deploying underwater equipment using a lifting device with adjustable lifting point position as described in claim 1, characterized in that: Includes the following steps: S1: Install the controller on the underwater equipment, electrically connect the umbilical cable to the underwater equipment, and connect the controller to the umbilical cable through the underwater equipment; S2: Fix the connecting beam to the top of the underwater equipment, wherein the connecting beam is arranged along the transverse centerline of the underwater equipment; S3: The lifting equipment lifts the underwater equipment through the umbilical cable. At this time, the controller controls the drive mechanism to drive the sliding seat and the connecting beam to move laterally relative to each other based on the lateral levelness of the connecting beam detected by the tilt sensor, so that the connecting beam rotates to a horizontal state. S4: The lifting equipment gradually lowers the underwater equipment to the seabed via the umbilical cable. Once the underwater equipment has been lowered to the seabed, the umbilical cable is released. S5: After the underwater equipment completes its work, the lifting equipment lifts the underwater equipment through the umbilical cable. At this time, the controller controls the drive mechanism to drive the sliding seat and the connecting beam to move laterally relative to each other based on the lateral levelness of the connecting beam detected by the tilt sensor, so that the connecting beam rotates to a horizontal state. S6: The lifting equipment gradually lifts the underwater equipment through the umbilical cable until the underwater equipment is lifted off the water surface.

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