CN217146308U - Large-size precast concrete cushion block structure underwater transfer device - Google Patents

Abstract

A large-size precast concrete cushion block structure underwater transfer device comprises a precast platform and a plurality of buoyancy tanks, wherein firstly, cushion blocks and the buoyancy tanks are built on the precast platform, the buoyancy tanks are respectively connected with cushion block embedded hoisting points and buoyancy tank lifting lugs and cushion block embedded hoisting points through vertical cables and diagonal cables, and every two buoyancy tanks are connected through horizontal cables; filling water into the prefabricated platform and sinking, floating the cushion block and the buoyancy tank integrally and drawing the cushion block and the buoyancy tank to a specified position, filling water into the buoyancy tank, and sinking the cushion block and the buoyancy tank integrally until the bottom of the buoyancy tank is seated; and (4) unwinding the cables between the buoyancy tanks and the cushion blocks, and independently transferring the buoyancy tanks to the prefabricated platform area for transferring the next cushion block. The floating block and the floating box are integrally floated and sunk by utilizing the water filling and draining functions of the floating box, and the floating box can be repeatedly used; the flexible connection system formed by the vertical cable, the inclined pull cable and the horizontal cable can improve the overall stability of the structure and can not damage the main structure due to too large constraint rigidity.

Description

Large-size precast concrete cushion block structure underwater transfer device

Technical Field

The utility model relates to an offshore wind power technology field is a device that is applicable to the prefabricated concrete cushion block structure of barrel type basis near bank seat end shifts in aqueous through flexonics.

Background

With the continuous development of offshore wind power offshore resources, offshore wind power is continuously developed to the deep open sea. Compared with the traditional foundation, the cylindrical foundation has more remarkable capability of resisting environmental load under the same material consumption. In order to further reduce the construction and installation cost of offshore wind power, the construction and installation of the cylindrical foundation are gradually changed from land prefabrication and hoisting launching into underwater prefabrication. In order to bear the vertical load of the foundation and prevent the foundation from being buried into the seabed in the construction process, a large-size cushion block structure needs to be arranged at the bottom of the foundation. However, due to the size and weight, the safety transfer of the large-sized precast concrete pad structure in water is an urgent problem to be solved.

Disclosure of Invention

The utility model aims at providing an adopt jumbo size precast concrete pad structure aquatic transfer device of flexonics mode, the device can realize that jumbo size precast concrete pad structure shifts and repeatedly usable in aqueous.

The technical scheme of the utility model is that:

an underwater transfer device with a large-size precast concrete cushion block structure comprises a precast platform, a plurality of floating boxes and a plurality of water storage tanks, wherein the precast platform is used for bearing the cushion block and the floating boxes are used for floating the cushion block; the prefabricated platform floats on the water surface, the cushion block and the buoyancy tank are sequentially arranged on the prefabricated platform, and the cushion block and the buoyancy tank are fixed together in a flexible connection mode.

Furthermore, the flexible connection comprises a vertical cable and an inclined pull cable which are used for connecting the buoyancy tanks and the cushion blocks, and a horizontal cable which is used for connecting every two adjacent buoyancy tanks. The vertical cable is connected with a ground order arranged on the buoyancy tank and a pre-embedded hoisting point arranged on the cushion block; the cable-stayed cable is connected with a lifting lug arranged on the buoyancy tank and a pre-embedded lifting point arranged on the cushion block; the horizontal mooring ropes are connected with horizontal lifting hooks arranged on every two adjacent buoyancy tanks.

Furthermore, the ground is welded at a strong structural position on the side surface of the buoyancy tank. The lifting lugs are welded at the position of a strong structure at the top of the buoyancy tank. The horizontal lifting hooks are longitudinally arranged on the end surfaces of the two sides of the floating box.

Further, prefabricated platform and flotation tank on be equipped with and fill drainage device.

The utility model has the advantages that:

the underwater transfer device with the large-size precast concrete cushion block structure can realize the transfer of the large-size precast concrete cushion block structure in water and can be repeatedly used; the floating and sinking of the cushion block and the floating box are realized by utilizing the water filling and draining functions of the floating box, and the floating box can be repeatedly used; the flexible connection system formed by the vertical cable, the inclined pull cable and the horizontal cable can improve the overall stability of the structure and can not damage the main structure due to too large constraint rigidity.

Drawings

FIG. 1 is an axial side view of the present invention;

FIG. 2 is a partial view of the vertical cable connection of the present invention;

FIG. 3 is a partial view of the horizontal cable connection of the present invention;

FIG. 4 is a layout view of the lifting lugs and horizontal lifting hooks on the top of the buoyancy tank of the utility model;

FIG. 5 is a schematic view of the floating of the whole cushion block and the buoyancy tank of the present invention;

FIG. 6 is a connection diagram of the buoyancy tank and the cushion block of the present invention;

FIG. 7 is a schematic view of the prefabricated platform with the cushion blocks transferred out;

FIG. 8 is a schematic diagram of the foundation transfer to the spacer of the present invention;

in figure 1, a platform is prefabricated; 2. a buoyancy tank; 3. a cushion block; 4. a step of ordering; 5. a vertical cable; 6. a horizontal cable; 7. a horizontal hook; 8. lifting lugs; 9. embedding lifting points in the cushion blocks; 10. cable-stayed cables; 11. a cylindrical foundation.

Detailed Description

The utility model provides a jumbo size precast concrete pad structure aquatic transfer device for jumbo size precast concrete pad structure shifts in the aquatic, and the device realizes the prefabrication and bearing to the cushion through prefabricated platform, realizes floating and realize shifting through external force to the cushion through the flotation tank.

Referring to the attached drawings 1-8, the utility model discloses jumbo size precast concrete pad structure aquatic transfer device adopts the flexible connection mode, mainly by prefabricated platform 1, flotation tank 2, cushion 3, ground order 4, perpendicular hawser 5, horizontal hawser 6, horizontal lifting hook 7, lug 8, the pre-buried hoisting point 9 of cushion, draw hawser 10 to one side. The buoyancy tank 2 is a floating device of the cushion block 3, and the self design size is adjusted according to the size of the cushion block 3 and the depth of the sea water; the cushion block 3 is a bearing structure of an upper foundation, and the size is designed according to the bearing capacity of the foundation; the ground 4 is welded at a strong structure position on the side surface of the buoyancy tank 2 and mainly provides a vertical upward force for the cushion block 3; the vertical cable 5 is a high-strength cable, the diameter of the vertical cable is selected according to the required breaking force, and the vertical cable 4 is connected with the cushion block pre-embedded lifting point 9 on the cushion block 3; the horizontal cable 6 is connected with a horizontal lifting hook 7 between two adjacent buoyancy tanks 2, so that the buoyancy tanks 2 are constrained to move mutually, and the stability of the whole structure in water is improved; the horizontal lifting hooks 7 are provided with a plurality of lifting hooks and are longitudinally and uniformly distributed on two sides of the buoyancy tank 2; the lug 8 welds in 2 top strong structural positions of flotation tank, links to each other with the pre-buried hoisting point 9 of cushion through drawing hawser 10 to one side, prevents that flotation tank 2 from producing great inclination in aqueous.

The utility model discloses be equipped with on prefabricated platform 1 and flotation tank 2 and fill drainage device, set up the cabin inside at prefabricated platform 1 and the cabin inside of flotation tank 2 respectively. A water charging and discharging pipeline system is arranged in the prefabricated platform 1, a water pump is arranged in the dry cabin, and a water pump start-stop control line is introduced into an above-water control chamber for control; the buoyancy tank 2 is filled with water and pumped into through the centrifugal pump on water, the drainage is pumped out through the submersible pump inside the buoyancy tank 2, and the submersible pump is started and stopped to control the control line and is introduced into the control chamber on water to control. The utility model discloses a fill drainage device's purpose is through filling the ups and downs that drainage realized prefabricated platform 1 and flotation tank 2, in order to realize right the utility model discloses an aquatic shifts the operation.

Through the utility model discloses the device can realize shifting cushion 3, and the step is as follows:

when the prefabricated platform 1 floats on the water surface, the cushion blocks 3 and the buoyancy tanks 2 are built on the prefabricated platform 1, lofting is carried out in advance, and the prefabricated platform is placed according to the design positions of the buoyancy tanks 2 on the cushion blocks 3;

stress structures such as a ground 4 order, a lifting lug 8 and the like are welded when the cushion block 3 floats and transfers corresponding to the position of the strong structure in the buoyancy tank 2;

the vertical cable 5 and the diagonal cable 10 are respectively connected with the cushion block pre-embedded hoisting point 9 and the lifting lug 8 and the cushion block pre-embedded hoisting point 9, and the cable is tensioned in advance through a chain block, so that the cable is prevented from generating large deformation due to hoisting stress; the two buoyancy tanks 2 are connected through a horizontal cable 6, so that the buoyancy tanks 2 are restricted when moving in water, and the overall stability is improved;

the prefabricated platform 1 is filled with water and sinks, and the gravity of the whole of the initial cushion block 3 and the buoyancy tank 2 is larger than the buoyancy force and sinks along with the prefabricated platform 1. With the increase of the sinking depth, the draft height outside the buoyancy tank 2 is increased, the buoyancy of the cushion block 3 and the buoyancy tank 1 is larger than the gravity, and the whole buoyancy tank floats and is separated from the prefabricated platform 1;

pulling the cushion block 3 through an external traction device to enable the buoyancy tank 2 and the cushion block 3 to move horizontally and leave the prefabricated platform area;

after the cushion block 3 moves to a designated position, filling water into the buoyancy tank 2, and continuously sinking the cushion block 3 and the buoyancy tank 2 to the bottom along with the increase of the water filling amount in the buoyancy tank;

and (3) unwinding the cable between the buoyancy tank 2 and the cushion block 3, wherein the buoyancy tank 2 has self-floating stability and can be independently transferred to the prefabricated platform area for transferring the next cushion block.

In the embodiment, the cushion block 3 is of a hexagonal panel structure, the size of opposite sides is 39m, and the thickness is 30 cm; the width of the buoyancy tank 2 is 2.5m, the height is 12m, and the length is 15 m; 4 nominal tension of the ground ream 50 t; the vertical cable 5 and the diagonal cable 10 are high-strength cables with the diameter of 28mm, and the horizontal cable 6 is a common nylon cable with the diameter of 28 mm; the lifting lug 8 is designed according to the pulling force of 60 t; the cushion block embedded lifting points 9 are designed to bear 50 t. Referring to fig. 8, after the spacer 3 is moved to the predetermined position, the cylindrical foundation 11 can be moved to the spacer 3 for the next fixing operation. In this embodiment, the prefabricated hexagonal cylindrical foundation 11 has a diameter of 32 m.

Claims (7)

1. The utility model provides a jumbo size precast concrete cushion block structure aquatic transfer device, characterized by: the device comprises a prefabricated platform (1), a bearing cushion block (3), a plurality of buoyancy tanks (2) and a plurality of lifting mechanisms, wherein the buoyancy tanks are used for lifting the cushion block (3); the prefabricated platform (1) floats on the water surface, the cushion blocks (3) and the buoyancy tanks (2) are sequentially arranged on the prefabricated platform (1), and the cushion blocks (3) and the buoyancy tanks (2) are fixed together in a flexible connection mode.

2. The underwater transfer device of a large-sized precast concrete pad structure of claim 1, wherein: the flexible connection comprises a vertical cable (5) and an oblique pull cable (10) which are used for connecting the buoyancy tanks (2) and the cushion blocks (3), and a horizontal cable (6) which is used for connecting every two adjacent buoyancy tanks (2).

3. The underwater transfer device of a large-sized precast concrete pad structure of claim 2, wherein: the vertical cable (5) is connected with a ground tackle (4) arranged on the buoyancy tank (2) and a pre-embedded hoisting point (9) arranged on the cushion block (3); the cable-stayed cable (10) is connected with a lifting lug (8) arranged on the buoyancy tank (2) and a pre-embedded lifting point (9) arranged on the cushion block (3); the horizontal mooring ropes (6) are connected with horizontal lifting hooks (7) arranged on every two adjacent buoyancy tanks (2).

4. The underwater transfer device of a large-sized precast concrete pad structure of claim 3, wherein: the ground ream (4) is welded at a strong structure position on the side surface of the buoyancy tank (2).

5. The underwater transfer device of a large-sized precast concrete pad structure of claim 3, wherein: the lifting lugs (8) are welded at the position of a strong structure at the top of the buoyancy tank (2).

6. The underwater transfer device of a large-sized precast concrete pad structure of claim 3, wherein: the horizontal lifting hook (7) is longitudinally arranged at the end surfaces of two sides of the floating box (2).

7. The underwater transfer device of a large-sized precast concrete pad structure of claim 1, wherein: the prefabricated platform (1) and the buoyancy tank (2) are provided with water filling and draining devices, the water filling and draining devices are arranged inside the cabin of the prefabricated platform (1) and inside the cabin of the buoyancy tank (2), and sinking and floating of the prefabricated platform (1) and the buoyancy tank (2) are achieved through water filling and draining.

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