Large underwater lifting platform truss structure base assembly

Abstract

The utility model discloses a large underwater lifting platform truss structure base assembly which is used for being matched with a lifting winch to lift a lifting platform and comprises a base, a middle connecting frame, an upper connecting frame and a top connecting piece, the top end of the base is connected with the bottom end of the middle connecting frame, the top end of the middle connecting frame is connected with the bottom end of the upper connecting frame, and the top connecting piece is connected with the bottom end of the upper connecting frame. The top end of the upper connecting frame is connected to the bottom end of the top connecting piece; a winch support is arranged on the outer side of the upper connecting frame, and guide rails are arranged on the inner side of the base, the inner side of the middle connecting frame and the inner side of the upper connecting frame. A steel wire rope on a winding drum of the lifting winch, a first pulley block on a pile leg of the lifting platform and a second pulley block on a top connecting piece form a winding system, the pile leg slides up and down in a reciprocating mode along a guide rail through the winding system, and the base assembly adopts the design of a truss structure and has the advantages of being large in space structure, light in weight, compact in layout, high in practicability and the like. The universality is high; the maintenance is convenient, and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of large underwater lifting mechanisms, and particularly relates to a truss structure base assembly of a large underwater lifting platform. Background Art

[0002] Large underwater lifting platforms are mostly used for offshore operations and are truss structures that are above the sea surface and have a horizontal platform surface. In the high winds and rough waves at sea, the lifting platform can stay steadily on the sea surface through three ways. The first is that its own structure lands on the seabed, the second is to be moored to the seabed with anchor cables, and the third is to use thrusters to adjust the position at any time; the specific usage method needs to be determined according to the water depth.

[0003] Large underwater lifting platforms are built in shallow seas where the water depth is only a dozen or dozens of meters. The platform uses the first method to be directly fixed to the seabed. Usually, the platform base is to drive piles and grout in the seabed through metal conduits, and then assemble the deck and equipment, or it is directly stabilized on the seabed entirely relying on the weight of the platform itself. However, once the position is determined, this method will be fixed and has a large weight. If it needs to work at another position, a new set of platforms needs to be rebuilt, with low versatility. Moreover, the platform base in this method is integral, which is not convenient for later maintenance. Summary of the Utility Model

[0004] In view of the above problems, the main purpose of the utility model is to design a truss structure base assembly of a large underwater lifting platform to solve the technical problems such as low versatility and inconvenient maintenance of current large underwater lifting platforms.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A truss structure base assembly of a large underwater lifting platform is used to cooperate with a hoisting winch to lift the lifting platform. The hoisting winch is provided with a drum for winding and unwinding a steel wire rope. The base assembly includes a base, a middle connecting frame, an upper connecting frame, and a top connecting piece. The bottom of the lifting platform is provided with pile legs for cooperating with the base assembly, and a first pulley block is arranged on the lifting platform;

[0007] Wherein, the top end of the base is connected to the bottom end of the middle connecting frame, the top end of the middle connecting frame is connected to the bottom end of the upper connecting frame, the top ends of the upper connecting frames are respectively connected to the bottom end of the top connecting piece, and a second pulley block is arranged at the top end of the top connecting piece;

[0008] A winch support for installing the hoisting winch is arranged on the outer side of the upper connecting frame, and guiding tracks for cooperating with the pile legs are respectively arranged on the inner sides of the base, the middle connecting frame, and the upper connecting frame;

[0009] The steel wire rope on the drum forms a winding system with the first pulley group and the second pulley group, and the leg reciprocates up and down along the guiding track through the winding system.

[0010] As a further description of the present utility model, one base is provided, and the top ends of its four corners are respectively provided as fixing parts; two middle connecting frames and two upper connecting frames are respectively provided, the top ends of their two corners are respectively provided as fixing parts, and the bottom ends of their two corners are respectively provided as connecting parts; four top connectors are provided, and the bottom ends of all of them are provided as connecting parts;

[0011] The fixing part of the base is connected to the connecting part of the middle connecting frame, the fixing part of the middle connecting frame is connected to the connecting part of the upper connecting frame, the fixing parts of the upper connecting frames are respectively connected to the connecting parts of the top connectors, and the two middle connecting frames and upper connecting frames are arranged parallel and opposite to each other at the top end of the base.

[0012] As a further description of the present utility model, the fixing part includes at least one flange, a guiding pin is arranged at the top of the flange, the connecting part includes at least one flange, and a fixing hole for cooperating with the guiding pin is arranged at the bottom of the flange. The flanges of the fixing part and the flanges of the connecting part correspond up and down, and the guiding pin is inserted into the fixing hole.

[0013] As a further description of the present utility model, the flanges of the fixing part and the flanges of the connecting part are fixed all around by high-strength bolts.

[0014] As a further description of the present utility model, the guiding pin is arranged as a spindle-shaped guiding pin.

[0015] Compared with the prior art, the technical effect of the present utility model is:

[0016] The utility model provides a truss structure base assembly for a large underwater lifting platform, which is used to cooperate with a hoisting winch to lift the lifting platform. The hoisting winch is provided with a drum for winding and unwinding a steel wire rope. The base assembly includes a base, a middle connecting frame, an upper connecting frame and a top connecting piece. The bottom of the lifting platform is provided with pile legs for cooperating with the base assembly, and a first pulley block is arranged on the pile legs; the top end of the base is connected to the bottom end of the middle connecting frame, the top end of the middle connecting frame is connected to the bottom end of the upper connecting frame, the top ends of the upper connecting frames are respectively connected to the bottom end of the top connecting piece, and a second pulley block is arranged at the top end of the top connecting piece; a winch bracket for installing the hoisting winch is arranged on the outer side of the upper connecting frame, and guiding tracks for cooperating with the pile legs are respectively arranged on the inner sides of the base, the middle connecting frame and the upper connecting frame; the steel wire rope on the drum and the first pulley block and the second pulley block form a winding system, and the pile legs slide up and down reciprocally along the guiding tracks through the winding system. The base assembly adopts the design of a truss structure, provides a firm and reliable lifting mechanism base assembly for the large underwater lifting platform arranged in a limited space, and has the advantages of large space structure, light weight design, compact layout, strong versatility and convenient maintenance. Description of the Drawings

[0017] Figure 1 is the overall structure view of the utility model;

[0018] Figure 2 is the view of the guiding track of the utility model;

[0019] Figure 3 is the structure view of the fixing part of the utility model;

[0020] Figure 4 is the schematic diagram of the wire winding mode of each pulley in the winding system of the utility model.

[0021] In the figure, 1. Base, 2. Middle connecting frame, 3. Upper connecting frame, 4. Top connecting piece, 5. Winch bracket, 6. Guiding track, 7. Guiding pin;

[0022] A. Drum, B. Movable pulley, C. Guide pulley, D. Fixed pulley. Detailed Embodiment

[0023] The following describes the utility model in detail with reference to the drawings:

[0024] In an embodiment of the utility model, a truss structure base assembly for a large underwater lifting platform is disclosed. Refer to Figures 1-4As shown, a truss structure design is adopted to provide a solid and reliable lifting mechanism base assembly for a large underwater lifting platform arranged in a limited space; this base assembly is used to cooperate with a hoisting winch to lift the lifting platform. The hoisting winch is provided with a drum A for winding and unwinding a steel wire rope. The bottom of the lifting platform is provided with pile legs for cooperating with the base assembly, and a first pulley block is arranged on the lifting platform, and the first pulley block is set as a movable pulley B; specifically, the base assembly includes a base 1, a middle connecting frame 2, an upper connecting frame 3 and a top connecting piece 4; among them, the top end of the base 1 is connected to the bottom end of the middle connecting frame 2, the top end of the middle connecting frame 2 is connected to the bottom end of the upper connecting frame 3, the top ends of the upper connecting frames 3 are respectively connected to the bottom end of the top connecting piece 4, and a second pulley block is arranged at the top end of the top connecting piece 4, and the second pulley block includes a guide wheel C and a fixed pulley D; a winch support 5 for installing the hoisting winch is arranged on the outside of the upper connecting frame 3, and the hoisting winch is installed on the winch support 5 through fasteners. Guide rails 6 for cooperating with the pile legs are respectively arranged on the inner sides of the base 1, the middle connecting frame 2 and the upper connecting frame 3; the steel wire rope on the drum forms a winding system with the first pulley block and the second pulley block, as Figure 4 shown, through the winding system, the pile legs slide up and down reciprocally along the guide rail 6. The matching mode between the outside of the pile legs and the inside of the guide rail 6 is set as any structure in the prior art that can rise and fall through the winding system.

[0025] Specifically, in this embodiment, one base 1 is provided, two middle connecting frames 2 and two upper connecting frames 3 are respectively provided, and four top connecting pieces 4 are provided; the top ends of the four corners of the base 1 are respectively set as fixed parts; the top ends of the two corners of the middle connecting frame 2 and the upper connecting frame 3 are respectively set as fixed parts, and the bottom ends of the two corners are respectively set as connecting parts; the bottom ends of the top connecting pieces 4 are all set as connecting parts; the fixed part of the base 1 is connected to the connecting part of the middle connecting frame 2, the fixed part of the middle connecting frame 2 is connected to the connecting part of the upper connecting frame 3, the fixed parts of the upper connecting frames 3 are respectively connected to the connecting parts of the top connecting pieces 4, and the two middle connecting frames 2 and the upper connecting frames 3 are both arranged in parallel and opposite to each other on the top end of the base 1.

[0026] In this embodiment, the above-mentioned fixed part includes at least one flange, and a guide pin 7 is arranged at the top of the flange. The above-mentioned connecting part includes at least one flange, and a fixing hole for cooperating with the guide pin 7 is arranged at the bottom of the flange. The flanges of the fixed part and the flanges of the connecting part are corresponding up and down, and the guide pin 7 is inserted into the fixing hole. At the same time, the flanges of the fixed part and the connecting part are fixed all around through high-strength bolts.

[0027] In this embodiment, the above-mentioned guide pin 7 is set as a spindle-shaped guide pin, which is convenient for the upper and lower alignment of the flange, and facilitates the docking of the base 1, the middle connecting frame 2, the upper connecting frame 3 and the top connecting piece 4 in water.

[0028] It should also be noted that four winch brackets 5 are provided, which are respectively located outside the two bottom corners of the upper connecting frame 3, and four hoisting winches are provided, which are respectively installed on the winch brackets 5 through fasteners; the top connecting piece 4 respectively includes a guide wheel C and two fixed pulleys D, and two movable pulleys B are respectively arranged at the four corners of the lifting platform. One end of the steel wire rope is connected to the drum A of the hoisting winch, and the other end is connected to the lifting platform. Through the Figure 4 wire winding method shown, the lifting or lowering of the lifting platform is realized.

[0029] Through the above content, the base assembly of the present utility model is disclosed. The hoisting winch is installed outside the upper connecting frame 3 through the setting of the winch bracket 5. The guide track 6 is welded inside the base 1, the middle connecting frame 2 and the upper connecting frame 3. The hoisting winch forms a winding system with the second pulley group on the top connecting piece 4 and the first pulley group on the lifting platform through the steel wire rope fixed on the drum. The lifting platform realizes lifting and lowering by the hoisting winch winding and unwinding the steel wire rope.

[0030] Compared with the prior art, the present utility model adopts the design of a truss structure, provides a strong and reliable lifting mechanism base assembly for a large underwater lifting platform arranged in a limited space, and has the advantages of a large space structure, lightweight design, compact layout, strong versatility and convenient maintenance.

[0031] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present utility model should be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A large underwater lifting platform truss structure base assembly, used to cooperate with a lifting winch to lift the lifting platform, the lifting winch is provided with a drum for retracting and releasing a wire rope, characterized in that: The base assembly includes a base, a middle connecting frame, an upper connecting frame and a top connecting piece. The bottom of the lifting platform is provided with pile legs for matching the base assembly, and the lifting platform is provided with a first pulley block; The top of the base is connected to the bottom of the middle connecting frame, the top of the middle connecting frame is connected to the bottom of the upper connecting frame, the top of the upper connecting frame is respectively connected to the bottom of the top connecting member, and the top of the top connecting member is provided with a second pulley block; A winch bracket for installing a lifting winch is provided on the outer side of the upper connecting frame, and guide rails for matching the pile legs are provided on the inner sides of the base, the middle connecting frame and the upper connecting frame respectively; The steel wire rope on the drum forms a winding system with the first pulley block and the second pulley block, and the pile legs reciprocate up and down along the guide track through the winding system.

2. The large underwater lifting platform truss structure base assembly according to claim 1, characterized in that: The base is provided with one, and the top ends of its four corners are respectively provided as fixing parts; the middle connecting frame and the upper connecting frame are provided with two, and the top ends of their two corners are respectively provided as fixing parts, and the bottom ends of their two corners are respectively provided as connecting parts; the top connecting members are provided with four, and the bottom ends of their four connecting members are all provided as connecting parts; The fixing part of the base is connected to the connecting part of the middle connecting frame, the fixing part of the middle connecting frame is connected to the connecting part of the upper connecting frame, the fixing parts of the upper connecting frame are respectively connected to the connecting parts of the top connecting member, and the two middle connecting frames and the upper connecting frames are arranged parallel and opposite to each other at the top end of the base.

3. The large underwater lifting platform truss structure base assembly according to claim 2 is characterized by: The fixing part includes at least one flange, and a guide pin is arranged on the top of the flange. The connecting part includes at least one flange, and a fixing hole matching the guide pin is arranged on the bottom of the flange. The flange of the fixing part corresponds to the flange of the connecting part up and down, and the guide pin is inserted into the fixing hole.

4. The large underwater lifting platform truss structure base assembly according to claim 3 is characterized by: The Hu flange of the fixing part and the Hu flange of the connecting part are fixed all around by high-strength bolts.

5. The large underwater lifting platform truss structure base assembly according to claim 3 is characterized by: The guide pin is configured as a spindle-shaped guide pin.

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