Sealing winch device for lifting underwater lifting platform

Abstract

The utility model discloses a sealing winch device for lifting an underwater lifting platform. The sealing winch device comprises a winch base assembly, a winding drum, a planetary reducer and a variable-frequency and variable-speed motor, the two ends of the winch base assembly are open, the winding drum is arranged in the winch base assembly, a through hole is formed in one end of the winding drum, the planetary reducer penetrates through the through hole and is deeply hidden in the winding drum, and the output end of the planetary reducer is connected with the connecting flange at the through hole. The other end of the winding drum is mounted on a bearing seat of the winch base assembly through a shaft end support; an output shaft of the variable-frequency and variable-speed motor penetrates through the winch base assembly and is connected with the input end of the planetary reducer. A built-in driving method is adopted, the internal space size of the winding drum is fully and reasonably utilized, and underwater sealing is more compact in structure, so that the weight of the underwater sealing winch is reduced, the cable arrangement capacity of the underwater winch is improved, and the service life of equipment is prolonged to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater lifting test platform devices, and particularly relates to an underwater lifting platform hoisting sealed winch device. Background Technique

[0002] In recent years, with the continuous improvement of the scientific and technological level, the technology of underwater lifting test platform devices in China has achieved rapid development. When using an underwater lifting test platform to monitor underwater electromechanical equipment, the platform device is driven by an underwater winch to move up and down vertically along the water surface, so as to monitor the motion states and trajectories of underwater electromechanical equipment at different positions for a long time. During the movement of the underwater lifting test platform, the underwater hoisting winch is subjected to too much water pressure, which puts forward higher requirements for the sealing performance of the internal motor of the underwater hoisting winch.

[0003] Chinese Utility Model Patent CN102079490B discloses an underwater winch, but the structure of this underwater winch is complex in design, cannot work underwater for a long time, needs to add pressure oil to balance the internal and external pressures of the winch, and the maximum bearing pressure is 3.0MP.

[0004] Chinese Utility Model Patent CN103466489A discloses an underwater automatic cable-laying winch. Due to its large internal pressure-resistant space size and small pressure-resistant strength, it cannot work in deep waters for a long time.

[0005] Therefore, it is necessary to develop an underwater hoisting winch with good sealing performance, strong corrosion resistance and high structural strength to better improve the working efficiency, safety and reliability of the underwater lifting test platform. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the defects existing in the prior art and provide an underwater lifting platform hoisting sealed winch device to solve the problem of poor sealing of the underwater winch in the existing underwater lifting platform.

[0007] To achieve the above purpose, the technical solution of the utility model is to design an underwater lifting platform hoisting sealed winch device, which is characterized in that it includes a winch base assembly, a drum, a planetary reducer, a shaft-end support and a variable-frequency speed-regulating motor;

[0008] Both ends of the winch base assembly are provided with openings, and a fixed flange for installing the planetary reducer is installed at one opening, and a bearing seat is installed at the other opening;

[0009] The drum is arranged inside the winch base assembly. A through hole is provided at one end of the drum, and a connecting flange is installed at the through hole. The planetary reducer passes through the through hole and is arranged inside the drum in a hidden manner. The output end of the planetary reducer is connected to the connecting flange at the through hole by bolts. The other end of the drum is installed on the bearing seat of the winch base assembly through an end support;

[0010] The mounting flange on the planetary reducer is connected to the fixed flange of the winch base assembly by bolts; the output shaft of the variable frequency speed regulating motor passes through the winch base assembly and is connected to the input end of the planetary reducer.

[0011] Further, the drum includes a second flange plate, a cylinder body, a second backing plate, and a third flange plate. The second flange plate and the third flange plate are respectively installed at both ends of the cylinder body. The mounting flange is installed close to the third flange plate on the inner wall of the cylinder body to form a through hole for facilitating the installation of the planetary reducer. A rope groove for facilitating rope laying is provided on the circumferential wall of the cylinder body, and the rope groove is composed of a plurality of rope groove measuring rods for reasonably distributing the arrangement of the rope; the second backing plate is installed on the second flange plate to form an installation groove for facilitating the installation of the end support.

[0012] A platform is provided between the cylinder body and the second flange plate to facilitate the installation of the rope groove measuring rod between the platform and the second flange plate.

[0013] It further includes a rope pressing block, and the rope pressing block is installed on one side of the cylinder body.

[0014] A third backing plate is installed on the mounting flange.

[0015] Further, it further includes a limit mechanism device and a limit device protective cover. The limit mechanism device is arranged on the side of the winch base assembly opposite to the variable frequency speed regulating motor. The limit mechanism device passes through the winch base assembly through an end support and is connected to the drum. The limit mechanism device is externally covered with a limit device protective cover;

[0016] The end support includes a sliding bearing, a support seat, and a support shaft for supporting the drum. One end of the support shaft is connected to the drum, and the other end of the support shaft is installed in the bearing seat through the sliding bearing and the support seat and is connected to the limit mechanism device.

[0017] Further, the limit mechanism device includes a three-jaw coupling, a transition rib plate, a coupling, an encoder, a transition flange, a limit switch, and an encoder protective cover. One end of the three-jaw coupling is connected to the support shaft, and the other end is connected to the limit switch. The limit switch is connected to the encoder through the coupling. The lower end face of the limit switch is installed on the transition rib plate;

[0018] The other end of the transition rib plate is connected to a transition flange, the transition flange is connected to the encoder protection cover by bolts, the encoder is installed inside the encoder protection cover, and an O-ring seal is provided on the installation end face between the transition flange and the encoder protection cover.

[0019] Further, the limit mechanism device protection cover includes a first plate, a cylinder, a third rib plate, a first flange plate, an extension pipe, a lifting lug, a cable row, a second plate, a third plate and a mounting seat. The first flange plate is welded to the end face of the cylinder close to the winch base assembly, and the first flange plate is connected to the winch base assembly by bolts. The extension pipe is welded to the end of the cylinder away from the winch base assembly. The first plate is welded to the end of the extension pipe away from the cylinder. The second plate, the third plate and the mounting seat are all welded inside the extension pipe and form a groove body convenient for the built-in encoder protection cover.

[0020] A third rib plate is welded between the cylinder and the first flange plate;

[0021] The lifting lug and the cable row are both welded to the outside of the extension pipe or / and the cylinder.

[0022] Further, the winch base assembly includes a first connecting plate arranged at the top and a first side plate and a second side plate connected to both sides of the first connecting plate. A second connecting plate is connected to the first side plate. Holes are provided on both the first side plate and the second side plate. A first backing plate is installed on the peripheral wall of the hole on the first side plate. A first rib plate and a second rib plate are installed at the bottom of the second side plate.

[0023] Further, an O-ring seal groove is provided at each interface of the drum.

[0024] Further, it further includes a motor base. The feet of the variable-frequency speed-regulating motor are installed on the installation surface of the motor base, and the motor base is installed on the winch base assembly.

[0025] Further, the motor base includes a fourth plate, a side plate, a third connecting plate, a panel, a third backing plate, a fifth plate, and a fourth rib plate. The fourth plate is installed on the winch base assembly. The lower end of the third connecting plate, the side plate and the fifth plate form an inclined surface structure. The panel is connected to the panel through the inclined surface structure formed by the side plate, the third connecting plate and the fifth plate. Third backing plates are installed at the four end corners of the top of the panel. A fourth rib plate is also provided between the panel and the inclined surface structure.

[0026] The advantages and beneficial effects of the present utility model are as follows:

[0027] 1. The present utility model adopts an internal drive method, makes full and reasonable use of the internal space size of the drum, makes the underwater seal more compact in structure, thereby reducing the weight of the underwater seal winch, and at the same time improving the cable laying capacity of the underwater winch, and to a certain extent improving the service life of the equipment.

[0028] 2. The utility model adopts a method of multiple sealing designs, can be used in deep water areas, can withstand greater pressure, has stronger sealing performance during the descent of the underwater lifting platform, better protects the internally installed motor and reducer, and prevents external liquids from damaging them.

[0029] 3. The utility model adopts a method of modular design, which can reduce the difficulty of disassembly. When a certain module is damaged, it can be replaced in time, making it more convenient during use. Description of the Drawings

[0030] Figure 1 It is the front view of a lifting and sealing winch device for an underwater lifting platform described in the utility model;

[0031] Figure 2 It is the sectional view taken along the A-A direction of a lifting and sealing winch device for an underwater lifting platform described in the utility model;

[0032] Figure 3 It is the sectional view taken along the A-A direction of the limit mechanism device of the utility model;

[0033] Figure 4 It is the front view of the protective cover of the limit device of the utility model;

[0034] Figure 5 It is the front view of the winch base assembly of the utility model;

[0035] Figure 6 It is the sectional view taken along the A-A direction of the winch base assembly of the utility model;

[0036] Figure 7 It is the sectional view taken along the A-A direction of the drum of the utility model;

[0037] Figure 8 It is the three-dimensional view of the motor base of the utility model.

[0038] In the figure: cover plate 1, support shaft 2, limit mechanism device 3, sliding bearing 4, limit device protective cover 5, support seat 6, winch base assembly 7, distance ring 8, drum 9, planetary reducer 10, fixed flange 11, variable frequency speed regulation motor 12, motor base 13, loose rope limit device 14, rope pressing wedge block 15, three-jaw coupling 16, transition rib plate 17, coupling 18, encoder 19, transition flange 20, limit switch 21, encoder protective cover 22, first plate 23, cylinder 24, third rib plate 25, first flange plate 26, extension pipe 27, lifting lug 28, cable row 29, second plate 30, third plate 31, mounting seat 32, first connecting plate 33, second connecting plate 34, first side plate 35, first backing plate 36, second side plate 37, first rib plate 38, second rib plate 39, first plate member 40, second plate member 41, cable row 42, second flange plate 43, cylinder body 44, second backing plate 45, climbing platform 46, third flange plate 47, connecting flange 48, third backing plate 49, rope pressing block 50, rope groove measuring rod 51, fourth plate 52, side plate 53, third connecting plate 54, panel 55, third backing plate 56, fifth plate 57, fourth rib plate 58. Detailed implementation manners

[0039] The following combines the drawings and embodiments to further describe the detailed implementation manners of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0040] According to Figures 1 - 8 As shown, the present utility model is an underwater lifting platform hoisting and sealing winch device, which includes a winch base assembly 7, a drum 9, a planetary reducer 10, shaft end supports and a variable frequency speed regulation motor 12;

[0041] Both ends of the winch base assembly 7 are open, and a fixed flange 11 for installing the planetary reducer 10 is installed at one open end, and a bearing seat is installed at the other open end;

[0042] The drum 9 is arranged inside the winch base assembly 7. A through hole is opened at one end of the drum 9, and a connecting flange 48 is installed at the through hole. The planetary reducer 10 penetrates through the through hole and is arranged inside the drum 9. The output end of the planetary reducer 10 is bolted to the connecting flange 48 at the through hole. The other end of the drum 9 is installed on the bearing seat of the winch base assembly 7 through shaft end supports;

[0043] The mounting flange on the planetary reducer 10 is bolted to the fixed flange of the winch base assembly 7; the output shaft of the variable frequency speed regulation motor 12 penetrates through the winch base assembly 7 and is connected to the input end of the planetary reducer 10.

[0044] In the above technical solution, the underwater hoisting sealed winch adopts a form in which a variable-frequency speed-regulating motor 12 drives a single-drum 9 through a built-in planetary reducer 10. By adopting the underwater variable-frequency speed-regulating motor 12, the stepless speed change requirement of the underwater sealed winch is realized.

[0045] The output shaft of the variable-frequency speed-regulating motor 12 is directly connected to the input end of the underwater built-in planetary reducer 10. The mounting flange of the underwater built-in planetary reducer 10 and the fixed flange of the winch base assembly 7 are connected by high-strength bolts, and the connecting flange of the output end and the drum 9 is connected by high-strength bolts. The other end of the drum 9 is installed on the bearing seat of the winch base through an end support, and an encoder is installed at the end of the shaft. It can ensure automatic and neat cable laying in the unmanned state, enable the underwater platform to lift normally and safely, and the lifting force at the lifting point will not affect the cable laying ability of the underwater winch. The fixed flange 11 adopts a transition flange.

[0046] In the present utility model, the winch base assembly 7 is a welded assembly. One end is used for installing the fixed flange of the underwater built-in planetary reducer 10, and the other end is used for installing the bearing seat of the support shaft 2, and both are fixed by bolts and nuts.

[0047] As a preference of the above technical solution, the drum 9 includes a second flange plate 43, a cylinder body 44, a second backing plate 45, and a third flange plate 47. The second flange plate 43 and the third flange plate 47 are respectively installed at both ends of the cylinder body 44. The mounting flange 48 is installed close to the third flange plate 47 on the inner wall of the cylinder body to form a through hole convenient for the installation of the planetary reducer. A rope groove for facilitating rope laying is opened on the circumferential wall of the cylinder body 44, and the rope groove is composed of a plurality of rope groove measuring rods 51 to reasonably distribute the arrangement of the ropes; the second backing plate 45 is installed on the second flange plate 43 to form an installation groove convenient for the installation of the end support.

[0048] A climbing platform 46 is provided between the cylinder body 44 and the second flange plate 43 so that the rope groove measuring rod 51 can be installed between the climbing platform 46 and the second flange plate 43.

[0049] It further includes a rope pressing block 50, and the rope pressing block 50 is installed on one side of the cylinder body 44.

[0050] A third backing plate 49 is installed on the mounting flange 48.

[0051] It further includes a rope pressing wedge 15, and the rope pressing wedge 15 is installed on the drum 9.

[0052] In the above technical solution, one end of the drum 9 is fixedly connected to the flange plate on the underwater built-in planetary reducer 10 by bolts, and the other end is fixedly connected to the shaft-end support shaft 2 by bolts. An O-ring groove is provided at each interface of the drum 9 to achieve the sealing effect. The drum 9, the shaft-end support shaft 2, and the underwater built-in planetary reducer 10 operate together under the drive of the underwater variable-frequency speed-regulating motor 12.

[0053] As an optimization of the above technical solution, it further includes a limit mechanism device 3 and a limit device protective cover 5. The limit mechanism device 3 is arranged on the side of the winch base assembly 7 opposite to the variable-frequency speed-regulating motor 12. The limit mechanism device 3 is connected to the drum 9 through the shaft-end support penetrating the winch base assembly 7. A limit device protective cover 5 is provided outside the limit mechanism device 3.

[0054] The shaft-end support includes a sliding bearing 4, a support seat 6, and a support shaft 2, and is used to support the drum 9. One end of the support shaft 2 is connected to the drum 9, and the other end of the support shaft 2 is installed in the bearing seat through the sliding bearing 4 and the support seat 6 and is connected to the limit mechanism device 3.

[0055] In the above technical solution, the shaft-end support is mainly composed of a sliding bearing 4, a support seat 6, and a support shaft 2, and is used to support the drum 9. The other components of the underwater hoisting and sealing winch are installed on the winch base assembly 7.

[0056] As an optimization of the above technical solution, the limit mechanism device 3 includes a three-jaw coupling 16, a transition rib plate 17, a coupling 18, an encoder 19, a transition flange 20, a limit switch 21, and an encoder protective cover 22. One end of the three-jaw coupling 16 is connected to the support shaft 2, and the other end is connected to the limit switch 21. The limit switch 21 is connected to the encoder 19 through the coupling 18. The lower end face of the limit switch 21 is installed on the transition rib plate 17. The three-jaw coupling 16 is connected to the transition rib plate 17 and the shaft-end support through a cover plate 1, and bone sealing rings are provided at their installation end faces. A distance ring 8 is provided between the shaft-end support and the drum 9.

[0057] The other end of the transition rib plate 17 is connected to the transition flange 20. The transition flange 20 is connected to the encoder protective cover 22 by bolts. The encoder 19 is installed inside the encoder protective cover 22, and an O-ring is provided at the installation end face of the transition flange 20 and the encoder protective cover 22.

[0058] In the above technical solution, the three-jaw coupling 16 is connected to the support shaft 2 and the transition rib plate 17 by screws and nuts respectively. A bone sealing ring is provided at its installation end face. The lower end face of the transition rib plate 17 is connected to the lower end face of the limit switch 21 by screws, nuts and washers. The limit switch 21 is connected to the left end of the coupling 18 by screws. The transition flange 20 is connected to the encoder protection cover 22 by bolts. The encoder 19 is installed inside the encoder protection cover 22, and an O-ring is provided at the installation end face. The encoder 19 is used to record the number of turns of the drum to realize the function of displaying the rope length of the drum and setting the over-release of the wire rope.

[0059] As an optimization of the above technical solution, the limit mechanism device protection cover 5 includes a first plate 23, a cylinder 24, a third rib plate 25, a first flange plate 26, an extension pipe 27, a lifting lug 28, a wire harness 29, a second plate 30, a third plate 31 and a mounting seat 32. The first flange plate 26 is welded to the end face of the cylinder 24 close to the winch base assembly 7, and the first flange plate 26 is connected to the winch base assembly 7 by bolts. The extension pipe 27 is welded to the end of the cylinder 24 facing away from the winch base assembly 7. The first plate 23 is welded to the end of the extension pipe 27 facing away from the cylinder 24. The second plate 30, the third plate 31 and the mounting seat 32 are all welded inside the extension pipe 27 to form a groove body convenient for the encoder protection cover 22 to be built in.

[0060] A third rib plate 25 is welded between the cylinder 24 and the first flange plate 26.

[0061] The lifting lug 28 and the wire harness 29 are both welded to the outside of the extension pipe 27 or / and the cylinder 24.

[0062] In the above technical solution, the limit mechanism device protection cover 5 is mainly used to protect the limit mechanism device and play a sealing role.

[0063] As an optimization of the above technical solution, the winch base assembly 7 includes a first connecting plate 33 arranged at the top and a first side plate 35 and a second side plate 37 connected to both sides of the first connecting plate 33. A second connecting plate 34 is connected to the first side plate 35. Holes are provided on both the first side plate 35 and the second side plate. A first backing plate 36 is installed on the peripheral wall of the hole on the first side plate. A first rib plate 38 and a second rib plate 39 are installed at the bottom of the second side plate.

[0064] The winch base assembly 7 further includes a first plate member 40, a second plate member 41 and a wire harness 42.

[0065] As an optimization of the above technical solution, an O-ring groove is provided at each interface of the drum 9.

[0066] As a preference of the above technical solution, it further includes a motor base 13. The feet of the variable-frequency speed-regulating motor 12 are mounted on the mounting surface of the motor base 13, and the motor base 13 is mounted on the winch base assembly 7. The variable-frequency speed-regulating motor 12 adopts the B35 mounting form, and the feet of the variable-frequency speed-regulating motor 12 are mounted on the mounting surface of the motor base 13. The motor base 13 in the present utility model is a steel plate welded part, mainly used to fix the underwater variable-frequency speed-regulating motor 12.

[0067] As a preference of the above technical solution, the motor base 13 includes a fourth plate 52, side plates 53, a third connecting plate 54, a panel 55, a third backing plate 56, a fifth plate 57, and a fourth rib plate 58. The fourth plate 52 is mounted on the winch base assembly 7. The lower end of the third connecting plate 54, the side plates 53, and the fifth plate 57 form an inclined surface structure. The panel 55 is connected to the panel 55 through the inclined surface structure formed by the side plates 53, the third connecting plate 54, and the fifth plate 57. Third backing plates 56 are mounted at the four end corners of the top of the panel 55, and a fourth rib plate 58 is further provided between the panel 55 and the inclined surface structure.

[0068] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A lifting sealing winch device for an underwater lifting platform, characterized in that: It includes a winch base assembly (7), a drum (9), a planetary reducer (10), a shaft end support and a variable frequency speed regulating motor (12); The winch base assembly (7) is open at both ends, and a fixing flange (11) for mounting a planetary reducer (10) is installed at one open end, and a bearing seat is installed at the other open end; The drum (9) is arranged in the winch base assembly (7), one end of the drum (9) is provided with a through hole, and a connecting flange (48) is installed at the through hole, the planetary reducer (10) passes through the through hole and is deeply hidden in the drum (9), the output end of the planetary reducer (10) is connected to the connecting flange (48) at the through hole by bolts, and the other end of the drum (9) is installed on the bearing seat of the winch base assembly (7) through the shaft end support; The mounting flange on the planetary reducer (10) is connected to the fixing flange (11) of the winch base assembly (7) by bolts; and the output shaft of the variable frequency speed regulating motor (12) passes through the winch base assembly (7) and is connected to the input end of the planetary reducer (10).

2. The underwater lifting platform lifting sealing winch device according to claim 1, characterized in that: The winding drum (9) comprises a second flange plate (43), a cylinder (44), a second gasket (45), and a third flange plate (47). The second flange plate (43) and the third flange plate (47) are respectively mounted on both ends of the cylinder (44). The mounting flange (48) is mounted on the inner wall of the cylinder (44) close to the third flange plate (47) to form a through hole for facilitating the installation of the planetary reducer (10). A rope groove for arranging ropes is provided on the circumferential wall of the cylinder (44). The second gasket (45) is mounted on the second flange plate (43) to form a mounting groove for facilitating the installation of the shaft end support.

3. The underwater lifting platform lifting sealing winch device according to claim 2 is characterized in that: It also includes a limit mechanism device (3) and a limit mechanism protection cover (5), wherein the limit mechanism device (3) is arranged on a side of the winch base assembly (7) opposite to the variable frequency speed regulating motor (12), the limit mechanism device (3) penetrates the winch base assembly (7) and is connected to the drum (9) via an axle end support, and the limit mechanism device (3) is provided with a limit mechanism protection cover (5) on its outer cover; The shaft end support comprises a sliding bearing (4), a support seat (6) and a support shaft (2), and is used to support the reel (9); one end of the support shaft (2) is connected to the reel (9); the other end of the support shaft (2) is installed in the bearing seat through the sliding bearing (4) and the support seat (6), and is connected to the limit mechanism device (3).

4. The underwater lifting platform lifting sealing winch device according to claim 3 is characterized in that: The limit mechanism device (3) comprises a three-claw coupling (16), a transition rib plate (17), a coupling (18), an encoder (19), a transition flange (20), a limit switch (21) and an encoder protection cover (22); one end of the three-claw coupling (16) is connected to the support shaft (2), and the other end is connected to the limit switch (21); the limit switch (21) is connected to the encoder (19) via the coupling (18); and the lower end surface of the limit switch (21) is mounted on the transition rib plate (17); The other end of the transition rib plate (17) is connected to a transition flange (20), the transition flange (20) is connected to an encoder protection cover (22) by bolts, the encoder (19) is installed inside the encoder protection cover (22), and an O-ring is provided on the installation end surfaces of the transition flange (20) and the encoder protection cover (22).

5. The underwater lifting platform lifting sealing winch device according to claim 4, characterized in that: The protective cover (5) of the limiting mechanism device comprises a first plate (23), a cylinder (24), a third rib plate (25), a first flange plate (26), an extension tube (27), a lifting ear (28), a row bar (29), a second plate (30), a third plate (31) and a mounting seat (32); the first flange plate (26) is welded to the end surface of the cylinder (24) close to the winch base assembly (7), and the first flange plate (26) is connected to the winch base assembly (7) by bolts; the extension tube (27) is welded to the end of the cylinder (24) away from the winch base assembly (7); the first plate (23) is welded to the end of the extension tube (27) away from the cylinder (24); the second plate (30), the third plate (31) and the mounting seat (32) are all welded to the inside of the extension tube (27) and form a groove body for facilitating the internal installation of the encoder protective cover (22); A third rib plate (25) is welded between the cylinder (24) and the first flange plate (26); The lifting lug (28) and the wiring strip (29) are welded to the outside of the extension tube (27) and / or the cylinder (24).

6. The underwater lifting platform lifting sealing winch device according to claim 3, characterized in that: The winch base assembly (7) comprises a first connecting plate (33) arranged at the top, and a first side plate (35) and a second side plate (37) connected to both sides of the first connecting plate (33); the first side plate (35) is connected to the second connecting plate (34); the first side plate (35) and the second side plate are both provided with holes; a first pad (36) is installed on the peripheral wall of the hole of the first side plate; and a first rib plate (38) and a second rib plate (39) are installed at the bottom of the second side plate.

7. The underwater lifting platform lifting sealing winch device according to claim 2, characterized in that: Each interface of the reel (9) is provided with an O-ring groove.

8. The underwater lifting platform lifting sealing winch device according to claim 1, characterized in that: It also includes a motor base (13), the base of the variable frequency speed regulating motor (12) is mounted on the mounting surface of the motor base (13), and the motor base (13) is mounted on the winch base assembly (7).

9. The underwater lifting platform lifting sealing winch device according to claim 8, characterized in that: The motor base (13) comprises a fourth plate (52), a side plate (53), a third connecting plate (54), a panel (55), a third pad (56), a fifth plate (57), and a fourth rib plate (58); the fourth plate (52) is mounted on the winch base assembly (7); the lower end of the third connecting plate (54), the side plate (53) and the fifth plate (57) form an inclined surface structure; the panel (55) is connected to the panel (55) via the inclined surface structure formed by the side plate (53), the third connecting plate (54) and the fifth plate (57); the third pad (56) is mounted at the four end corners of the top of the panel (55); and a fourth rib plate (58) is further provided between the panel (55) and the inclined surface structure.

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