Transverse wave motion compensation mechanism for offshore platform personnel boarding gangway ladder

Abstract

The invention discloses a transverse wave motion compensation mechanism for an offshore platform personnel embarkation gangway ladder, which comprises an offshore platform fixing frame, an embarkation ladder and a ship body, the embarkation ladder and the ship body are arranged on the front side of the offshore platform fixing frame, and the front side of the offshore platform fixing frame is fixedly connected with a plurality of traffic ship berthing rubber fenders. By arranging a series of structures, the lifting gangway ladder can be conveniently and accurately compensated left and right in a mode that friction measurement is matched with active distance control driving when a ship body swings left and right, so that the lifting gangway ladder and the ship body move left and right consistently to form a relative static effect, and the phenomenon that people fall off easily due to large inertia caused by direct movement to static is reduced; a person can conveniently and stably climb to the lifting gangway ladder, the use stability is improved, hard impact force generated by instant movement can be conveniently and elastically buffered and unloaded during movement compensation, compensation work is more flexible and stable, discomfort is reduced, the comfort of the person during initial climbing is improved, and the service life of the person is prolonged. In addition, the buffering damping force and the elastic swing amplitude balance can be adjusted accurately, and the using effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of gangway for offshore platform personnel to board, and in particular to a lateral wave motion compensation mechanism for gangway for offshore platform personnel to board. Background Art

[0002] Due to the unpredictable wind and waves at sea, the ship will inevitably rise and fall and swing left and right under the action of the waves, making it difficult for the staff to pass normally and safely. The sea transport boat and the offshore platform rely on the boarding ladder and gangway platform installed on the offshore platform. The boarding ladder is lifted and carried on the top of the sea transport boat. The sea transport boat personnel enter the gangway platform through the boarding ladder and then enter the offshore platform to work;

[0003] The existing boarding gangway on the offshore platform is used to connect the marine transport boat (hull), and a lifting structure is provided to drive the boarding gangway to lift and lower for connection and separation. Figure 1 , which is a reference figure showing the existing boarding gangway ladder being overlapped on the top of the hull, and which is provided with a gangway ladder sliding guide rail for vertically guiding the boarding gangway ladder and a lifting structure for driving the lifting. The boarding gangway ladder can be lifted and lowered to offset the heave phenomenon, which is also the basic lifting function of the boarding gangway ladder on the offshore platform. However, there are the following deficiencies when in use;

[0004] After the transport boat is connected to the offshore platform by the towing rope, it will still swing slightly back and forth due to the influence of the waves, resulting in a relative displacement back and forth with the boarding ladder. When people climb from the hull to the boarding ladder, the direct transition from motion to stillness will cause great left and right lateral inertia to the people, which can easily cause people to fall. The lack of a structure that automatically and accurately compensates the boarding ladder for its left and right movement to be consistent with the hull makes it difficult to climb stably to the boarding ladder, and the stability of use is not ideal.

[0005] In order to solve the problem that the boarding gangway cannot be automatically and accurately compensated laterally to make it consistent with the left and right movement of the hull, we propose a lateral wave motion compensation mechanism for the boarding gangway of offshore platform personnel to solve the above problem. Summary of the invention

[0006] The lateral wave motion compensation mechanism for a boarding ladder for offshore platform personnel proposed by the present invention cannot automatically and accurately compensate the boarding ladder laterally to make it consistent with the left-right movement of the hull.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lateral wave motion compensation mechanism for boarding a gangway for personnel on an offshore platform, comprising an offshore platform fixed frame, a boarding ladder and a hull on the front side thereof, a plurality of rubber fenders for berthing transportation boats fixedly connected to the front side of the offshore platform fixed frame, the boarding ladder comprising a mobile frame arranged at the front side of the offshore platform fixed frame, two gangway ladder sliding guide rails fixedly connected to the front side of the mobile frame, a lifting gangway ladder is arranged between the two gangway ladder sliding guide rails, and sliders slidably connected to the corresponding gangway ladder sliding guide rails are installed on both sides of the lifting gangway ladder, and the moving frame is fixedly connected to the front side of the moving frame. A lifting mechanism fixedly connected to two sliders is installed on the top of the moving frame, and a gangway platform located on the right side of the lifting gangway is fixedly installed on the front side of the offshore platform fixed frame; the lifting mechanism is used to lift and adjust the sliders in the sliding guide rails of the two gangway ladders, so as to lift and adjust the lifting gangway ladder to separate or abut against the hull, and the rubber fender for the berthing of the transportation boat is used to reduce the phenomenon of hard collision during the docking process of the hull. The gangway platform is a support platform for personnel to pass on the offshore platform fixed frame and is close to the lifting gangway ladder, and is used for personnel to directly walk from the lifting gangway ladder or jump to the top of it for passage;

[0008] The same anti-wear self-driven transverse guide compensation mechanism is installed on the front side of the fixed frame of the offshore platform and the rear side of the mobile frame. The anti-wear self-driven transverse guide compensation mechanism includes a fixed plate fixedly connected to the front side of the fixed frame of the offshore platform and a round seat embedded and fixed on the rear side of the mobile frame. Two anti-wear transverse guide components fixedly connected to the front side of the fixed plate are installed between the inner walls on both sides of the round seat. A support is fixedly connected between the two anti-wear transverse guide components. A first electric cylinder fixedly connected to the right side inner wall of the round seat with its protruding end is fixedly installed on the right side of the support. The top of the first electric cylinder is fixed and electrically connected to a PLC controller. A PLC controller connected to the PLC is installed between the left side of the support and the left inner wall of the round seat. The distance measuring component is electrically connected to the controller; after the hull is connected to the offshore platform fixed frame by two external traction ropes, there is still a small left and right swing phenomenon under the influence of the left and right lateral waves of the water body. The set PLC controller is used to control the start of the first electric cylinder to drive the return seat to move left and right, and the left and right movement of the return seat is used to drive the lifting gangway to move left and right through the moving frame and the gangway sliding guide rail in turn to perform compensation work. The anti-wear cross guide component is used for the anti-wear lateral guidance of the return seat. The distance measuring component is used to measure the left and right movement distance of the return seat in real time and transmit the distance value to the PLC controller, so that the PLC controller can accurately control the telescopic stroke of the first electric cylinder;

[0009] An elastic fitting lateral movement detection mechanism which is in active contact with the top of the hull is installed on the front bottom side of the lifting gangway, and a displacement sensor which is electrically connected to the PLC controller is fixedly installed in the elastic fitting lateral movement detection mechanism; the elastic fitting lateral movement detection mechanism is used to elastically rub against the top of the hull to move together with the hull when the hull swings left and right, and drive the displacement sensor to move together, the displacement sensor is used to detect the movement amplitude and transmit the corresponding value to the PLC controller, and the PLC controller is used to accurately control the first electric cylinder according to the received movement amplitude and the real-time measured displacement distance of the return seat, so that the movement amplitude of the return seat is consistent with that of the hull, and the consistent left and right movement of the two forms a relative static effect, so as to achieve accurate compensation, so as to facilitate personnel to board the lifting gangway from the hull.

[0010] Preferably, the lifting mechanism comprises a U-shaped seat fixedly mounted on the top of the moving frame, a groove with an opening at the top is opened on the rear inner wall of the U-shaped seat, a second electric cylinder is hinged on the rear inner wall of the groove, a roller seat is hinged on the extended end of the second electric cylinder, a first roller is rotatably mounted between the top inner wall and the bottom inner wall of the roller seat, a guide block fixedly connected to the top of the roller seat is slidably mounted between the inner walls on both sides of the groove, two first steering rollers are rotatably mounted between the top inner wall and the bottom inner wall of the U-shaped seat, second steering rollers rotatably mounted on the top of the moving frame are arranged on both sides of the U-shaped seat, a third steering roller rotatably mounted on the front side of the moving frame is arranged on the front side of the second steering roller, a steel wire rope is wound around the outer side of the first roller, two ends of the steel wire rope are respectively passed around the outer side of the corresponding first steering roller, the outer side of the second steering roller and the top of the third steering roller and a lifting roller is fixedly mounted, a connecting shaft is rotatably sleeved in the lifting roller, and the ends close to the two connecting shafts are respectively movably inserted into the corresponding gangway sliding guide rail and fixedly connected to the side that repels the two sliding blocks.

[0011] Preferably, the anti-wear cross-guide assembly includes two cross-guide rods fixedly connected between the inner walls on both sides of the circular seat, the front side of the fixed plate is fixedly connected to two support seats, one side of the support seat is provided with two circular through holes, and two anti-wear balls are movably embedded on the four side inner walls of the circular through holes, the cross-guide rod is located between the corresponding eight anti-wear balls and is in movably contact with the anti-wear balls, and the support is fixedly installed between the two support seats.

[0012] Preferably, the distance measuring component includes a laser distance measuring sensor fixedly mounted on the left side of the support and electrically connected to the PLC controller, and the left side of the laser distance measuring sensor is provided with a reflective sheet embedded and fixed on the left inner wall of the circular seat.

[0013] Preferably, the elastic fitting transverse displacement detection mechanism includes a U-shaped plate fixedly connected to the front side of the bottom of the lifting gangway, two transverse guide shafts are fixedly connected between the inner walls on both sides of the U-shaped plate, and a center guide block is provided on the sliding sleeves of the two transverse guide shafts, a flexible pulling spring is fixedly connected between the left side of the center guide block and the left inner wall of the U-shaped plate, and the flexible pulling spring is movably sleeved on the transverse guide shaft on the rear side, an outer tube with a blocking structure at the top is fixedly connected to the bottom of the center guide block, a sliding sleeve inside the outer tube is provided with an inner tube with a blocking structure at the bottom end, a compression spring in a compressed state is fixedly connected between the inner wall of the bottom end of the inner tube and the inner wall of the top end of the outer tube, a pressure block is fixedly connected to the bottom of the inner tube, an anti-skid rubber block is adhesively fixed to the bottom of the pressure block, the bottom of the anti-skid rubber block is arranged in a sawtooth structure and is in tight contact with the top of the hull, and the displacement sensor is fixedly installed on the top of the center guide block.

[0014] Preferably, a strip groove is provided on the inner wall of the repelling side of the two gangway sliding rails, and the front and rear inner walls of the strip groove are respectively in active contact with the front and rear sides of the corresponding connecting shaft, and the strip groove is used for the corresponding connecting shaft to move up and down.

[0015] Preferably, sliding grooves slidably connected to the outer side of the guide block are provided on the inner walls on both sides of the groove.

[0016] Preferably, a resistance rotating rod is rotatably mounted on the front bottom side of the lifting gangway, and the bottom of the resistance rotating rod is in movably contact with the top of the hull.

[0017] Preferably, a limiting groove is provided on the rear side of the inner tube, and a limiting block slidably connected to the limiting groove is fixedly connected to the inner wall of the rear side of the outer tube.

[0018] Preferably, the extended end of the first electric cylinder can also be disconnected from the right inner wall of the return seat, and the right inner wall of the return seat is embedded and fixed with a damping-adjustable pulling and pushing mechanism fixedly connected to the extended end of the first electric cylinder, and the damping-adjustable pulling and pushing mechanism is used to perform elastic damping unloading when the return seat is driven to move left and right by the first electric cylinder, so as to reduce the hard impact force generated at the beginning of instantaneous opening movement or back movement, so as to reduce discomfort, and the damping-adjustable pulling and pushing mechanism includes a fixed box embedded and fixed on the right inner wall of the return seat, the rear side of the fixed box is set as an opening, and two guide rods are fixedly connected between the inner walls on both sides of the fixed box, and a moving plate and two adjusting plates are slidably sleeved on the two guide rods, and the moving plate is located between the two adjusting plates, and the extended end of the first electric cylinder extends into the fixed box and is fixedly connected to the left side of the moving plate, and two buffer springs that are respectively movably sleeved on the outer sides of the corresponding guide rods are fixedly connected to the sides of the two adjusting plates, and the adjacent ends of the two buffer springs located at the bottom are respectively fixedly connected to the two sides of the moving plate;

[0019] Pressure sensors are embedded and fixed on the top of both sides of the movable plate, and the adjacent ends of the two buffer springs located above are fixedly connected to the repelling sides of the two pressure sensors respectively. Screws are rotatably installed on the inner walls of both sides of the fixed box, and the adjacent ends of the two screws are fixedly connected. The threads of the two screws have opposite rotation directions, and the two adjustment plates are threadedly sleeved on the corresponding screws respectively. A servo motor with an output shaft fixedly connected to the right end of the screw on the right side is fixedly installed on the right side of the fixed box, and the servo motor and the two pressure sensors are electrically connected to the PLC controller. The adjustment plate on the left and the left side of the fixed box are provided with movable through holes for the extended end of the first electric cylinder to move through.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. A lateral wave motion compensation mechanism for a gangway for boarding personnel on an offshore platform, which cooperates with a mobile frame, an offshore platform fixed frame, a lifting mechanism, a gangway sliding guide rail, a slider and a lifting gangway, can control the connection and separation of the lifting gangway with the hull by lifting and lowering the lifting gangway with a steel wire rope, so as to allow personnel to climb and pass, and by releasing the steel wire rope a little more during descent to reserve a part of the downward travel of the lifting gangway, the lifting gangway can achieve the effect of adaptive up and down integrated movement when the hull floats or sinks;

[0022] 2. A transverse wave motion compensation mechanism for the gangway for boarding personnel on an offshore platform. The mechanism can frictionally measure the left and right swing amplitude of the hull when it swings left and right, and control the left and right movement of the round-shaped seat and detect its movement distance to ensure that the left and right movement distance is consistent with the swing amplitude. The movement of the round-shaped seat is used to drive the lifting gangway to move left and right, so as to achieve the effect of accurate left and right compensation of the lifting gangway by friction measurement and active distance control driving, so that the lifting gangway moves in accordance with the left and right movement of the hull, and the relative static effect is formed by the consistency of the left and right movement of the two, so as to facilitate personnel to board the lifting gangway from the hull, reduce the phenomenon that personnel are easy to fall due to the great left and right lateral inertia caused by the movement of the hull directly to the static state of the lifting gangway, facilitate personnel to climb onto the lifting gangway, and improve the stability of use; it has the effect of automatic accurate left and right compensation, and has a significant effect of improving climbing stability and safety;

[0023] 3. A lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway, which can also provide anti-wear and guide for the round-shaped seat through the anti-wear transverse guide component to prevent the large friction from causing the jamming phenomenon, ensure the stable and smooth effect of the left and right compensation movement, facilitate personnel to climb up the lifting gangway stably, and further improve the stability of use; it has the effect of smooth and long-term stable compensation movement;

[0024] 4. A lateral wave motion compensation mechanism for offshore platform personnel to board the gangway, which can elastically buffer and unload the hard impact force generated by the initial instantaneous movement during movement compensation through the cooperation of a fixed plate, a circular seat, a PLC controller, a displacement sensor, an anti-wear cross guide component, a distance measuring component, an elastically fitted lateral movement detection mechanism and a damping adjustable pulling and pushing mechanism, so as to make the left and right compensation work more flexible and smooth, reduce discomfort, and improve the comfort of personnel during initial climbing, and can accurately adjust the buffering damping force to facilitate the balance and applicable adjustment of the elastic swing amplitude and force, and further improve the use effect; it has the effect of enhancing the flexibility, stability and comfort of the compensation movement, so as to bring personnel a significant effect of more comfortable use.

[0025] The present invention is provided with a series of structures, which facilitates the accurate left and right compensation of the lifting gangway by means of friction measurement and active distance control drive when the hull swings left and right, so that it moves consistently with the left and right movement of the hull to form a relative static effect, thereby reducing the phenomenon that personnel are prone to falling due to large inertia caused by direct movement to stillness, facilitating personnel to climb stably onto the lifting gangway, improving the stability of use, facilitating the elastic buffering and unloading of the hard impact force generated by the instantaneous movement during movement compensation, making the compensation work more flexible and stable, reducing discomfort, improving the comfort of personnel during initial climbing, and facilitating accurate and suitable adjustment of the balance between the buffering damping force and the elastic swing amplitude, thereby further improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a top view of the structure of a lateral wave motion compensation mechanism for offshore platform personnel boarding a gangway, as proposed in the first embodiment of the present invention;

[0027] Figure 2 This is a left-side structural schematic diagram of a lateral wave motion compensation mechanism for offshore platform personnel boarding a gangway proposed in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of a top view of the structure of a lifting mechanism of a transverse wave motion compensation mechanism for offshore platform personnel boarding a gangway proposed in the first embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of a wear-resistant self-driven transverse guide compensation mechanism of a transverse wave motion compensation mechanism for offshore platform personnel boarding a gangway proposed in the first embodiment of the present invention;

[0030] Figure 5 for Figure 4 A schematic diagram of a main cross-sectional structure;

[0031] Figure 6This is a schematic diagram of the three-dimensional structure of an elastically fitted lateral movement detection mechanism and a displacement sensor connecting piece of a lateral wave motion compensation mechanism for offshore platform personnel boarding a gangway proposed in the first embodiment of the present invention;

[0032] Figure 7 for Figure 2 A part of the structure of the enlarged cross-section diagram;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of a wear-resistant self-driven transverse guide compensation mechanism of a transverse wave motion compensation mechanism for offshore platform personnel boarding a gangway proposed in the second embodiment of the present invention;

[0034] Fig. 9 for Figure 8 A schematic diagram of a main cross-sectional structure;

[0035] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part B in FIG.

[0036] In the figure: 100, offshore platform fixed frame; 200, hull; 300, rubber fender for mooring traffic boat; 400, gangway platform; 1, mobile frame; 101, lifting mechanism; 1011, U-shaped seat; 1012, second electric cylinder; 1013, roller seat; 1014, guide block; 1015, first roller; 1016, wire rope; 1017, first steering roller; 1018, second steering roller; 1019, third steering roller; 1031, lifting roller; 1032, connecting shaft; 102, gangway sliding guide rail; 103, lifting gangway; 103, abutment turning rod; 2, fixed plate; 201, round seat; 202, horizontal guide rod; 203, anti-wear Ball bearing; 204, support seat; 205, support seat; 206, first electric cylinder; 207, reflector; 208, laser ranging sensor; 3, U-shaped plate; 301, horizontal guide shaft; 302, center guide block; 303, flexible pulling spring; 304, outer tube; 305, compression spring; 306, inner tube; 307, pressure block; 308, anti-slip rubber block; 309, limit groove; 310, limit block; 4, displacement sensor; 5, PLC controller; 6, fixing box; 601, guide rod; 602, moving plate; 603, adjusting plate; 604, buffer spring; 605, pressure sensor; 606, servo motor; 607, screw; 608, movable perforation. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Embodiment 1

[0039] like Figures 1 to 7 As shown, the present embodiment proposes a lateral wave motion compensation mechanism for a boarding ladder for offshore platform personnel, comprising an offshore platform fixed frame 100 and a boarding ladder and a hull 200 on the front side thereof, wherein a plurality of rubber fenders 300 for berthing transportation boats are fixedly connected to the front side of the offshore platform fixed frame 100, and the boarding ladder comprises a mobile frame 1 arranged at the front side of the offshore platform fixed frame 100, wherein two ladder sliding guide rails 102 are fixedly connected to the front side of the mobile frame 1, and a lifting ladder 103 is arranged between the two ladder sliding guide rails 102, and sliders slidably connected to the corresponding ladder sliding guide rails 102 are installed on both sides of the lifting ladder 103, and a lifting mechanism 101 fixedly connected to the two sliders is installed on the top of the mobile frame 1, and the offshore platform fixed frame 100 is fixedly connected to the front side of the mobile frame 100. A gangway platform 400 is fixedly installed on the front side and is located on the right side of the lifting gangway 103. A resistance rod 1033 is rotatably installed on the front side of the bottom of the lifting gangway 103. The bottom of the resistance rod 1033 is in active contact with the top of the hull 200. The lifting mechanism 101 is used to lift and lower the sliders in the two gangway sliding guide rails 102 to lift and lower the gangway 103 so as to separate or abut the hull. The rubber fender 300 for the berthing of the transportation boat is used to reduce the phenomenon of hard collision during the docking of the hull 200. The gangway platform 400 is a support platform for personnel to pass on the offshore platform fixed frame 100 and is close to the lifting gangway 103. It is used for personnel to walk directly from the lifting gangway 103 or jump to the top of it for passage.

[0040] The same anti-wear self-driven transverse guide compensation mechanism is installed on the front side of the offshore platform fixed frame 100 and the rear side of the mobile frame 1. The anti-wear self-driven transverse guide compensation mechanism includes a fixed plate 2 fixedly connected to the front side of the offshore platform fixed frame 100 and a round seat 201 embedded and fixed on the rear side of the mobile frame 1. Two anti-wear transverse guide components fixedly connected to the front side of the fixed plate 2 are installed between the inner walls on both sides of the round seat 201. A support 205 is fixedly connected between the two anti-wear transverse guide components. A first electric cylinder 206 whose protruding end is fixedly connected to the right inner wall of the round seat 201 is fixedly installed on the right side of the support 205. The top of the first electric cylinder 206 is fixed and electrically connected to a PLC controller 5. A PLC controller 5 is installed between the left side of the support 205 and the left inner wall of the round seat 201. The distance measuring component electrically connected to the device 5; after the hull 200 is connected to the offshore platform fixed frame 100 by two external traction ropes, there is still a small left and right swing phenomenon under the influence of the left and right lateral waves of the water body. The set PLC controller 5 is used to control the first electric cylinder 206 to start and drive the round seat 201 to move left and right. The left and right movement of the round seat 201 is used to drive the lifting gangway 103 to move left and right through the moving frame 1 and the gangway sliding guide rail 102 in turn to perform compensation work. The anti-wear cross guide component is used to prevent the wear of the round seat 201 and guide it laterally. The distance measuring component is used to measure the left and right movement distance of the round seat 201 in real time and transmit the distance value to the PLC controller 5, so that the PLC controller 5 can accurately control the telescopic stroke of the first electric cylinder 206;

[0041] An elastic fitting lateral movement detection mechanism that is in active contact with the top of the hull 200 is installed on the bottom front side of the lifting gangway 103, and a displacement sensor 4 that is electrically connected to the PLC controller 5 is fixedly installed inside the elastic fitting lateral movement detection mechanism; the elastic fitting lateral movement detection mechanism is used to elastically rub against the top of the hull 200 and move with it when the hull 200 swings left and right, and drive the displacement sensor 4 to move as a whole, and the displacement sensor 4 is used to detect the movement amplitude and transmit the corresponding value to the PLC controller 5. The PLC controller 5 is used to accurately control the first electric cylinder 206 according to the received movement amplitude and the real-time measured displacement distance of the return seat 201, so that the movement amplitude of the return seat 201 is consistent with that of the hull 200, and the consistent left and right movement of the two forms a relative static effect, thereby achieving precise compensation, so as to facilitate personnel to board the lifting gangway 103 from the hull 200.

[0042] Specifically, the lifting mechanism 101 includes a U-shaped seat 1011 fixedly installed on the top of the mobile frame 1, a groove with an opening at the top is provided on the rear inner wall of the U-shaped seat 1011, a second electric cylinder 1012 is hinged on the rear inner wall of the groove, a roller seat 1013 is hinged on the extended end of the second electric cylinder 1012, a first roller 1015 is rotatably installed between the top inner wall and the bottom inner wall of the roller seat 1013, a guide block 1014 fixedly connected to the top of the roller seat 1013 is slidably installed between the inner walls on both sides of the groove, and a slide groove slidably connected to the outer side of the guide block 1014 is provided on the inner walls on both sides of the groove, which plays the effect of guiding the guide block 1014 to slide forward and backward In the embodiment, two first steering rollers 1017 are rotatably installed between the top inner wall and the bottom inner wall of the U-shaped seat 1011, and second steering rollers 1018 are rotatably installed on the top of the mobile frame 1 on both sides of the U-shaped seat 1011. A third steering roller 1019 rotatably installed on the front side of the mobile frame 1 is provided on the front side of the second steering roller 1018. A steel wire rope 1016 is wound around the outer side of the first roller 1015. The two ends of the steel wire rope 1016 are respectively wound around the outer side of the corresponding first steering roller 1017, the outer side of the second steering roller 1018 and the top of the third steering roller 1019 and fixedly installed with a lifting roller 1031. A connecting shaft 1 is rotatably sleeved inside the lifting roller 1031. 032, the adjacent ends of the two connecting shafts 1032 are respectively movably inserted into the corresponding gangway sliding guide rails 102 and fixedly connected with the repelling sides of the two sliding blocks, wherein the inner walls of the repelling sides of the two gangway sliding guide rails 102 are provided with strip grooves, and the front and rear inner walls of the strip grooves are respectively in movably contact with the front and rear sides of the corresponding connecting shafts 1032, and the strip grooves are used for the corresponding connecting shafts 1032 to move up and down; the U-shaped seat 1011, the second electric cylinder 1012, the roller seat 1013, the guide block 1014, the first roller 1015, the wire rope 1016, the first steering roller 1017, the second steering roller 1018, the third steering roller 1019, the lifting The roller 1031 and the connecting shaft 1032 cooperate with each other, and the second electric cylinder 1012 is used to drive the roller seat 1013 to move forward and backward. The roller seat 1013 drives the wire rope 1016 to move forward and backward through the first roller 1015. The wire rope 1016 slides on the outside of the two first steering rollers 1017, the two second steering rollers 1018 and the two third steering rollers 1019, and drives the two lifting rollers 1031 to move upward or downward. The two lifting rollers 1031 drive the sliders in the two gangway sliding guide rails 102 to slide up and down through the two connecting shafts 1032 to perform lifting and lowering adjustments, thereby achieving the effect of lifting and lowering the lifting gangway 103 so that it is separated from or abutted against the hull.

[0043] Furthermore, the anti-wear cross-guide assembly includes two cross-guide rods 202 fixedly connected between the inner walls of the two sides of the round seat 201, two support seats 204 are fixedly connected to the front side of the fixed plate 2, one side of the support seat 204 is provided with two round through holes, and two anti-wear balls 203 are movably embedded on the inner walls of the four sides of the round through holes, the cross-guide rod 202 is located between the corresponding eight anti-wear balls 203 and is in active contact with the anti-wear balls 203, and the support 205 is fixedly installed between the two support seats 204; the cross-guide rod 202, the support seat 204, the round through holes and the anti-wear balls 203 cooperate with each other, When the return seat 201 moves left and right for compensation, the return seat 201 drives the four cross guide rods 202 to move left and right. The cross guide rods 202 slide laterally between the corresponding eight anti-wear balls 203. Each cross guide rod 202 is surrounded and guided by the eight anti-wear balls 203. With the anti-wear balls 203 being rotatable, the four cross guide rods 202 are laterally anti-wear guided, thereby achieving anti-wear guidance of the return seat 201. The anti-wear guidance can avoid the phenomenon of the return seat 201 being stuck due to friction caused by the generation of large friction force, thereby ensuring the stable and smooth effect of the left and right compensation movement.

[0044] Furthermore, the distance measuring component includes a laser distance measuring sensor 208 fixedly mounted on the left side of the support 205 and electrically connected to the PLC controller 5, and a reflective sheet 207 embedded and fixed on the left inner wall of the circular seat 201 is provided on the left side of the laser distance measuring sensor 208, wherein the left inner wall of the circular seat 201 is provided with an embedding groove bonded and fixed to the outer side of the reflective sheet 207; the laser distance measuring sensor 208 and the reflective sheet 207 cooperate with each other, and when the circular seat 201 moves left and right, the reflective sheet 207 will be driven to move left and right as a whole, thereby changing the distance between the laser distance measuring sensor 208, and the laser distance measuring sensor 208 monitors the distance between itself and the reflective sheet 207 in real time and transmits the distance value to the PLC controller 5, so that the PLC controller 5 can accurately control the telescopic stroke of the first electric cylinder 206 according to the received displacement amplitude value.

[0045] Furthermore, the elastically fitting transverse movement detection mechanism includes a U-shaped plate 3 fixedly connected to the front side of the bottom of the lifting gangway 103, two transverse guide shafts 301 are fixedly connected between the inner walls on both sides of the U-shaped plate 3, and a center guide block 302 is slidably sleeved on the two transverse guide shafts 301, wherein one side of the center guide block 302 is provided with two transverse guide holes which are respectively slidably sleeved with the outer sides of the corresponding transverse guide shafts 301, so as to guide the transverse sliding of the center guide block 302, and a flexible pulling spring 303 is fixedly connected between the left side of the center guide block 302 and the left inner wall of the U-shaped plate 3, and the flexible pulling spring 303 is movably sleeved on the transverse guide shaft 301 on the rear side, and an outer tube 304 with a blocking structure on the top is fixedly connected to the bottom of the center guide block 302, and the outer tube The inner sliding sleeve 304 is provided with an inner tube 306 with a blocking structure at the bottom end, and a limiting groove 309 is provided on the rear side of the inner tube 306. A limiting block 310 slidably connected to the limiting groove 309 is fixedly connected to the inner wall of the rear side of the outer tube 304, which has the effect of limiting and preventing the inner tube 306 from falling off. A compression spring 305 in a compressed state is fixedly connected between the inner wall of the bottom end of the inner tube 306 and the inner wall of the top end of the outer tube 304. A pressing block 307 is fixedly connected to the bottom of the inner tube 306, and an anti-skid rubber block 308 is bonded and fixed to the bottom of the pressing block 307. The bottom of the anti-skid rubber block 308 is set to a zigzag structure and is tightly contacted with the top of the hull 200. The displacement sensor 4 is fixedly installed on the top of the center guide block 302; the U-shaped plate 3 and the cross guide The shaft 301, the center guide block 302, the flexible pulling spring 303, the outer tube 304, the inner tube 306, the compression spring 305, the pressure block 307 and the anti-skid rubber block 308 cooperate with each other, and the elastic force of the flexible pulling spring 303 is used to drive the center guide block 302 to be centered on the inner side of the U-shaped plate 3 when not in use. When the lifting gangway 103 abuts against the top of the hull 200, the lifting gangway 103 will drive the anti-skid rubber block 308 to abut against the top of the hull 200 through the transverse guide shaft 301, the center guide block 302, the outer tube 304, the compression spring 305, the inner tube 306 and the pressure block 307 in sequence, and when continuing to move downward after abutment, the outer tube 304 is driven downward to compress the compression spring 305 in sequence through the transverse guide shaft 301 and the center guide block 302, and the compression spring 305 is used to The elastic force of the compression spring 305 in the compressed state elastically tightens the anti-skid rubber block 308 on the top of the hull 200 through the inner tube 306 and the pressure block 307 in turn, thereby increasing the abutting friction force. In this way, when the hull swings left and right, the anti-skid rubber block 308 will be driven to move left and right as a whole by stable friction. The anti-skid rubber block 308 drives the center guide block 302 to move left and right through the inner tube 306 and the outer tube 304 in turn. The center guide block 302 that moves left and right is used to drive the displacement sensor 4 to follow the hull 200 to swing left and right as a whole, so that it can accurately detect the left and right displacement amplitude, and then use the PLC controller 5 to accurately control the first electric cylinder 206 according to the received movement amplitude and the real-time measured displacement distance of the return seat 201 to perform precise compensation.

[0046] In this embodiment, the lifting gangway 103 can be raised and lowered by pulling the steel wire rope 1016 to control its connection and separation with the hull 200, so as to facilitate personnel to climb and pass through, and the steel wire rope 1016 can be released a little more during descent to reserve a part of the downward travel of the lifting gangway 103, so as to achieve the effect of adaptive up and down integrated movement of the lifting gangway 103 when the hull 200 floats and sinks; when the hull 200 swings left and right, the lifting gangway 103 can be automatically and accurately compensated left and right to make it consistent with the left and right movement of the hull 200, and the consistency of the left and right movement of the two can form a relative static effect, so as to facilitate personnel to board the lifting gangway 103 from the hull 200, reduce the phenomenon that personnel are easy to fall due to the great left and right lateral inertia caused by the movement of the hull 200 directly to the stationary state of the lifting gangway 103, and improve the stability in use; and the smoothness and stability of the compensation movement can be ensured by anti-wear guiding, so that personnel can stably climb to the lifting gangway 103, and further improve the stability in use.

[0047] The method of using this embodiment is as follows: after the hull 200 is docked and connected to the offshore platform fixing frame 100 through two external traction ropes, when overlapping, the second electric cylinder 1012 is started in the positive direction to drive the roller seat 1013 to move forward, and the roller seat 1013 drives the wire rope 1016 to move forward through the first roller 1015, and the wire rope 1016 slides outside the two first steering rollers 1017, the two second steering rollers 1018 and the two third steering rollers 1019, and drives the two lifting rollers 1031 to move downward The two lifting rollers 1031 drive the sliders in the two gangway sliding guide rails 102 to slide downward through the two connecting shafts 1032, and the two sliders drive the lifting gangway 103 downward to overlap the top of the hull 200, and continue to start the second electric cylinder 1012 to drive the first roller 1015 to relax part of the pulling force on the wire rope 1016, so that a little travel for the lifting gangway 103 to move downward is reserved, and the gravity of the lifting gangway 103 is used to abut against the top of the hull 200, so as to cooperate with the lifting gangway 103 when the hull 200 floats and sinks. 03, the weight of the lifting gangway 103 will drive the lifting gangway 103 to move up and down for automatic compensation to prevent the two from being squeezed and collided. The personnel can climb to the springboard platform 400 through the lifting gangway 103, and then pass to the offshore platform fixed frame 100; when it is necessary to separate later, the second electric cylinder 1012 is reversely started to drive the roller seat 1013 to move backward, and the roller seat 1013 drives the first roller 1015 to gradually tighten the wire rope 1016 and drive it to move backward. The wire rope 1016 is between the two first steering rollers 1017 and the two The second steering roller 1018 and the two third steering rollers 1019 slide outside and drive the two lifting rollers 1031 to move upward. The two lifting rollers 1031 drive the sliders in the two gangway sliding guide rails 102 to slide upward through the two connecting shafts 1032. The two sliders drive the lifting gangway 103 to separate upward from the hull 200, release the overlapping work, and achieve the effect of facilitating the overlapping with the hull 200 for people to climb and pass, and achieve the effect of the lifting gangway 103 to perform adaptive up and down integrated movement when the hull 200 floats or sinks;

[0048] When the lifting gangway 103 is overlapped with the hull 200 downward, the lifting gangway 103 will drive the anti-skid rubber block 308 to abut against the top of the hull 200 through the transverse guide shaft 301, the center guide block 302, the outer tube 304, the compression spring 305, the inner tube 306 and the pressure block 307 in sequence, and when continuing to move downward after abutment, the outer tube 304 is driven downward to compress the compression spring 305 in sequence through the transverse guide shaft 301 and the center guide block 302, and the elastic force of the compression spring 305 in the compressed state is used to elastically tighten the anti-skid rubber block 308 on the top of the hull 200 through the inner tube 306 and the pressure block 307 in sequence, thereby increasing the abutting friction force. In this way, when the hull is swung left and right by the waves of the water body, the anti-skid rubber block 308 will be driven to move left and right as a whole by stable friction. The anti-skid rubber block 308 drives the center guide block 302 to move left and right through the inner tube 306 and the outer tube 304 in turn. The center guide block 302 that moves left and right drives the displacement sensor 4 to swing left and right with the hull 200. When the displacement sensor 4 swings left and right, it detects the movement amplitude and transmits the corresponding value to the PLC controller 5. The PLC controller 5 controls the first electric cylinder 206 to start according to the received movement amplitude value. The first electric cylinder 206 drives the round seat 201 to move left and right. The round seat 201 drives the four cross guide rods 202 to move left and right. The cross guide rods 202 slide laterally between the corresponding eight anti-wear balls 203. Each cross guide rod 202 is surrounded and guided by the eight anti-wear balls 203. The anti-wear balls 203 can By rotating, the four transverse guide rods 202 are laterally guided with anti-wear, and then the round-shaped seat 201 is guided with anti-wear. The anti-wear guide can avoid the phenomenon that the round-shaped seat 201 is stuck due to friction caused by the generation of large friction force. The round-shaped seat 201 is moved left and right to drive the lifting gangway 103 to move left and right through the moving frame 1 and the gangway sliding guide rail 102 in turn to perform compensation work. When the round-shaped seat 201 moves left and right, it also drives the reflective sheet 207 to move left and right as a whole, changing the distance between it and the laser ranging sensor 208. The laser ranging sensor 208 monitors the distance between it and the reflective sheet 207 in real time and transmits the distance value to the PLC controller 5, so that the PLC controller 5 can accurately control the first electric cylinder 2 according to the received displacement amplitude value. 06, so as to achieve the precise control of the left and right movement range of the lifting gangway 103, so that it is consistent with the left and right movement of the hull 200, and the relative static effect is formed by the consistent left and right movement of the two, so as to achieve the effect of precise left and right compensation of the lifting gangway 103, so as to facilitate personnel to board the lifting gangway 103 from the hull 200, and reduce the phenomenon that personnel are easy to fall due to the great left and right lateral inertia caused by the direct movement of the hull 200 to the stillness of the lifting gangway 103, and cooperate with the anti-wear guiding method of the circular seat 201 to ensure the stable and smooth effect of the left and right compensation movement, so as to facilitate personnel to climb stably to the lifting gangway 103 and improve the stability of use. After climbing to the lifting gangway 103, the first electric cylinder 206 can be controlled to slowly close.

[0049] Embodiment 2

[0050] like Figures 8 to 10 As shown, this embodiment is based on the first embodiment, and its difference from the first embodiment is that: the protruding end of the first electric cylinder 206 can also be disconnected from the right inner wall of the round seat 201, and a damping-adjustable pulling and pushing mechanism fixedly connected to the protruding end of the first electric cylinder 206 is embedded and fixed on the right inner wall of the round seat 201. The damping-adjustable pulling and pushing mechanism is used to perform elastic damping unloading when the round seat 201 is driven to move left and right by the first electric cylinder 206, so as to reduce the hard impact force generated at the beginning of instantaneous opening movement or back movement, so as to reduce discomfort. The damping-adjustable pulling and pushing mechanism includes a fixing box 6 embedded and fixed on the right inner wall of the round seat 201, and the rear side of the fixing box 6 is set to an opening, and two inner walls on both sides of the fixing box 6 are fixedly connected. Guide rod 601, two guide rods 601 are slidably sleeved with a moving plate 602 and two adjusting plates 603, wherein one side of the moving plate 602 and the two adjusting plates 603 are provided with two guide holes respectively slidably sleeved with the outer sides of the corresponding guide rods 601, which play the effect of guiding the horizontal sliding of the moving plate 602 and the two adjusting plates 603, the moving plate 602 is located between the two adjusting plates 603, the protruding end of the first electric cylinder 206 extends into the fixed box 6 and is fixedly connected to the left side of the moving plate 602, and the adjacent sides of the two adjusting plates 603 are fixedly connected with two buffer springs 604 respectively movably sleeved on the outer sides of the corresponding guide rods 601, and the adjacent ends of the two buffer springs 604 located at the bottom are respectively fixedly connected to the two sides of the moving plate 602;

[0051] Pressure sensors 605 are embedded and fixed on the top of both sides of the movable plate 602, and the adjacent ends of the two buffer springs 604 located above are respectively fixedly connected to the repelling sides of the two pressure sensors 605. Screws 607 are rotatably installed on the inner walls of both sides of the fixed box 6, wherein the left inner wall and the right inner wall of the fixed box 6 are respectively provided with mounting grooves and mounting holes, and bearings are fixedly sleeved in the mounting grooves and the mounting holes, and the inner ring of the bearing is fixedly sleeved with the outer side of the corresponding screw 607, so as to achieve the effect of rotatably installing the screw 607, and the adjacent ends of the two screws 607 are fixedly connected, and the thread rotation directions of the two screws 607 are opposite, and the two adjustment plates 603 are respectively threadedly sleeved on the corresponding screws 60 7, wherein a threaded hole threadedly connected to the corresponding screw rod 607 is provided on one side of the adjustment plate 603, and the threaded connection relationship between the screw rod 607 and the threaded hole is utilized, and the two screw rods 607 have opposite thread rotation directions, so as to facilitate driving the two adjustment plates 603 to move in a similar or repulsive manner when the two screw rods 607 rotate. A servo motor 606 whose output shaft is fixedly connected to the right end of the screw rod 607 on the right side is fixedly installed on the right side of the fixed box 6, and the servo motor 606 and the two pressure sensors 605 are electrically connected to the PLC controller 5. The adjustment plate 603 on the left and the left side of the fixed box 6 are provided with a movable through hole 608 for the extended end of the first electric cylinder 206 to move through.

[0052] This embodiment can elastically buffer and unload the hard impact force generated by the initial instantaneous movement during movement compensation, making the left and right compensation work more flexible and smooth, reducing discomfort, and improving the comfort of personnel during initial climbing. It can also accurately adjust the buffering damping force to facilitate the balanced adjustment of the elastic swing amplitude and force, further improving the use effect.

[0053] The method of using this embodiment is as follows: the difference from the first embodiment is that: under the premise that the extended end of the first electric cylinder 206 is not directly connected to the right inner wall of the return seat 201, when the PLC controller 5 controls the first electric cylinder 206 to start the left and right compensation work according to the received displacement amplitude value and the moving distance, the first electric cylinder 206 will drive the moving plate 602 to move left and right when it starts, and the moving plate 602 drives the two adjustment plates 603 to move left and right through four buffer springs 604, and the two adjustment plates 603 drive the fixed box 6 to move left and right through two screws 607, and the fixed box 6 drives the return seat 201 to move left and right, so as to realize the transfer and drive the return seat 201 to move left and right. The effect of left-right compensation is achieved. When a large hard impact force is generated at the initial start-up moment, when a hard force is generated instantly to the right, when the moving plate 602 instantly moves to the right, it will slide to the right on the two guide rods 601, and compress the two buffer springs 604 on the right. On the contrary, when a hard impact force is generated when the moving plate 602 instantly moves to the left, the two buffer springs 604 on the left are compressed. The elastic force of the buffer spring 604 can be used to buffer and unload the hard impact force generated by the instantaneous movement, and gradually reset when the movement tends to be stable, thereby reducing the phenomenon of hard impact force generated by the initial instantaneous movement, making the left-right compensation work more flexible and stable, reducing discomfort, and improving the comfort of personnel during initial climbing.

[0054] In addition, when it is necessary to adjust the damping strength of the movable plate 602 according to the buffering requirements, if the buffer spring 604 is relatively soft, resulting in a large frequency of elastic swinging back and forth during the buffering movement, when balance adjustment is required, the PLC controller 5 is used to pre-set the closing pressure value of the servo motor 606 according to the damping strength requirements, and the servo motor 606 is started in the positive direction to drive the two screws 607 to rotate. The rotation of the two screws 607 drives the two adjustment plates 603 to move similarly, and compresses the four buffer springs 604 toward the middle. The two buffer springs 604 located at the top increase the squeezing force on the two pressure sensors 605. The pressure sensor 605 detects the squeezing force and transmits it to the PLC controller 5. When the preset value is reached, the PLC controller 5 controls the servo motor 606 to automatically close, and uses pressure measurement to adjust the initial compression degree of the buffer spring 604 to change its damping strength, so as to facilitate accurate and automatic adjustment of the damping strength, facilitate balance and applicable adjustments, and further improve the use effect.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lateral wave motion compensation mechanism for a ladder for boarding personnel on an offshore platform, comprising an offshore platform fixed frame (100) and a boarding ladder and a hull (200) on the front side thereof, wherein a plurality of rubber fenders (300) for mooring transportation boats are fixedly connected to the front side of the offshore platform fixed frame (100), characterized in that: The boarding ladder comprises a mobile frame (1) arranged at the front side of an offshore platform fixed frame (100); two gangway ladder sliding guide rails (102) are fixedly connected to the front side of the mobile frame (1); a lifting gangway ladder (103) is arranged between the two gangway ladder sliding guide rails (102); sliders slidably connected to the corresponding gangway ladder sliding guide rails (102) are installed on both sides of the lifting gangway ladder (103); a lifting mechanism (101) fixedly connected to the two sliders is installed on the top of the mobile frame (1); and a gangway platform (400) located on the right side of the lifting gangway ladder (103) is fixedly installed on the front side of the offshore platform fixed frame (100); The front side of the fixed frame (100) of the offshore platform and the rear side of the mobile frame (1) are equipped with the same anti-wear self-driven transverse guide compensation mechanism, the anti-wear self-driven transverse guide compensation mechanism comprising a fixed plate (2) fixedly connected to the front side of the fixed frame (100) of the offshore platform and a round-shaped seat (201) embedded and fixed to the rear side of the mobile frame (1), two anti-wear transverse guide components fixedly connected to the front side of the fixed plate (2) are installed between the inner walls on both sides of the round-shaped seat (201), a support (205) is fixedly connected between the two anti-wear transverse guide components, a first electric cylinder (206) whose protruding end is fixedly connected to the right inner wall of the round-shaped seat (201) is fixedly installed on the right side of the support (205), a PLC controller (5) is fixed on the top of the first electric cylinder (206) and electrically connected, and a distance measuring component electrically connected to the PLC controller (5) is installed between the left side of the support (205) and the left inner wall of the round-shaped seat (201); An elastically fitted transverse displacement detection mechanism that is in active contact with the top of the hull (200) is installed on the front bottom side of the lifting gangway (103), and a displacement sensor (4) that is electrically connected to the PLC controller (5) is fixedly installed in the elastically fitted transverse displacement detection mechanism.

2. A lateral wave motion compensation mechanism for offshore platform personnel boarding a gangway according to claim 1, characterized in that: The lifting mechanism (101) comprises a U-shaped seat (1011) fixedly mounted on the top of the moving frame (1); a groove with an opening at the top is provided on the rear inner wall of the U-shaped seat (1011); a second electric cylinder (1012) is hingedly connected to the rear inner wall of the groove; a roller seat (1013) is hingedly connected to the protruding end of the second electric cylinder (1012); a first roller (1015) is rotatably mounted between the top inner wall and the bottom inner wall of the roller seat (1013); a guide block (1014) fixedly connected to the top of the roller seat (1013) is slidably mounted between the inner walls on both sides of the groove; two first steering rollers (1017) are rotatably mounted between the top inner wall and the bottom inner wall of the U-shaped seat (1011); and rotatable guide wheels (1015) are provided on both sides of the U-shaped seat (1011). A second steering roller (1018) is mounted on the top of the moving frame (1), and a third steering roller (1019) is rotatably mounted on the front side of the moving frame (1) is arranged on the front side of the second steering roller (1018). A steel wire rope (1016) is wound around the outer side of the first roller (1015), and two ends of the steel wire rope (1016) are respectively wound around the outer side of the corresponding first steering roller (1017), the outer side of the second steering roller (1018) and the top of the third steering roller (1019) and fixedly mounted with a lifting roller (1031). A connecting shaft (1032) is rotatably sleeved in the lifting roller (1031), and the adjacent ends of the two connecting shafts (1032) are respectively movably inserted into the corresponding gangway sliding guide rail (102) and fixedly connected to the repelling side of the two sliding blocks.

3. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 1, characterized in that: The anti-wear cross-guide assembly comprises two cross-guide rods (202) fixedly connected between the inner walls on both sides of the round seat (201); the front side of the fixed plate (2) is fixedly connected to two support seats (204); one side of the support seat (204) is provided with two circular through holes; two anti-wear balls (203) are movably embedded on the inner walls on four sides of the circular through holes; the cross-guide rod (202) is located between the corresponding eight anti-wear balls (203) and is in movably contact with the anti-wear balls (203); and the support seat (205) is fixedly installed between the two support seats (204).

4. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 1, characterized in that: The distance measuring component comprises a laser distance measuring sensor (208) fixedly mounted on the left side of the support (205) and electrically connected to the PLC controller (5); the left side of the laser distance measuring sensor (208) is matched with a reflective sheet (207) embedded and fixed on the left inner wall of the circular seat (201).

5. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 1, characterized in that: The elastically fitted transverse movement detection mechanism comprises a U-shaped plate (3) fixedly connected to the front side of the bottom of the lifting gangway (103), two transverse guide shafts (301) are fixedly connected between the inner walls on both sides of the U-shaped plate (3), a center guide block (302) is slidably sleeved on the two transverse guide shafts (301), a flexible pulling spring (303) is fixedly connected between the left side of the center guide block (302) and the left inner wall of the U-shaped plate (3), the flexible pulling spring (303) is movably sleeved on the rear transverse guide shaft (301), and the bottom of the center guide block (302) is fixedly connected to an outer cap having a top with a blocking structure. The outer tube (304) is provided with an inner tube (306) whose bottom end is a blocking structure in a sliding sleeve inside the outer tube (304), a compression spring (305) in a compressed state is fixedly connected between the inner wall of the bottom end of the inner tube (306) and the inner wall of the top end of the outer tube (304), a pressing block (307) is fixedly connected to the bottom of the inner tube (306), an anti-skid rubber block (308) is adhesively fixed to the bottom of the pressing block (307), the bottom of the anti-skid rubber block (308) is arranged in a sawtooth structure and is in close contact with the top of the hull (200), and the displacement sensor (4) is fixedly installed on the top of the center guide block (302).

6. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 2, characterized in that: The inner walls of the two gangway sliding guide rails (102) that repel each other are both provided with strip grooves, and the front and rear inner walls of the strip grooves are in active contact with the front and rear sides of the corresponding connecting shafts (1032) respectively.

7. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 2, characterized in that: Sliding grooves slidably connected to the outer side of the guide block (1014) are provided on the inner walls on both sides of the groove.

8. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 1, characterized in that: A resistance rotating rod (1033) is rotatably mounted on the front side of the bottom of the lifting gangway (103), and the bottom of the resistance rotating rod (1033) is in active contact with the top of the hull (200).

9. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 5, characterized in that: A limiting groove (309) is provided on the rear side of the inner tube (306), and a limiting block (310) is fixedly connected to the inner wall of the rear side of the outer tube (304) and is slidably connected to the limiting groove (309).

10. The lateral wave motion compensation mechanism for offshore platform personnel boarding the gangway according to claim 1, characterized in that: The extended end of the first electric cylinder (206) may also be disconnected from the right inner wall of the round-shaped seat (201); a damping-adjustable pulling and pushing mechanism fixedly connected to the extended end of the first electric cylinder (206) is embedded and fixed on the right inner wall of the round-shaped seat (201); the damping-adjustable pulling and pushing mechanism comprises a fixing box (6) embedded and fixed on the right inner wall of the round-shaped seat (201); the rear side of the fixing box (6) is set to be open; two guide rods (601) are fixedly connected between the inner walls on both sides of the fixing box (6); the two guide rods (601) are 01) The upper sliding sleeve is provided with a movable plate (602) and two adjustment plates (603), the movable plate (602) is located between the two adjustment plates (603), the protruding end of the first electric oil cylinder (206) extends into the fixed box (6) and is fixedly connected to the left side of the movable plate (602), and the adjacent sides of the two adjustment plates (603) are fixedly connected with two buffer springs (604) which are movably sleeved on the outer sides of the corresponding guide rods (601), and the adjacent ends of the two buffer springs (604) located at the bottom are fixedly connected to the two sides of the movable plate (602) respectively; Pressure sensors (605) are embedded and fixed on the top of both sides of the movable plate (602), and the adjacent ends of the two buffer springs (604) located above are fixedly connected to the repelling sides of the two pressure sensors (605). Screw rods (607) are rotatably installed on the inner walls of both sides of the fixed box (6), and the adjacent ends of the two screw rods (607) are fixedly connected. The threads of the two screw rods (607) are in opposite directions. The two adjustment plates (603) are respectively threadedly sleeved on the corresponding screw rods (607). A servo motor (606) whose output shaft is fixedly connected to the right end of the screw rod (607) on the right side is fixedly installed on the right side of the fixed box (6). The servo motor (606) and the two pressure sensors (605) are electrically connected to the PLC controller (5). The adjustment plate (603) located on the left side and the left side of the fixed box (6) are both provided with movable through holes (608) for the extended end of the first electric oil cylinder (206) to move through.

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