CN215399254U

CN215399254U - Shifting device for large-scale prefabricated underwater mat

Info

Publication number: CN215399254U
Application number: CN202120655475.XU
Authority: CN
Inventors: 练继建; 刘润; 王孝群; 练冲
Original assignee: Hebei University of Engineering
Current assignee: Hebei University of Engineering
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-01-04
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a shifting device of a large-scale prefabricated underwater mat, which comprises a prefabricated platform, a mat, a fixed support, a hook, a rope threading hole, a limiting rod, a movable support, a buoyancy tank and a cable; the heavy pad be the hexagon structure and set up in prefabricated platform upper surface, be provided with on two relative sides of heavy pad the fixed bolster, all install on other sides the gag lever post, the bottom of moving movable support is equipped with the spacing groove, through the spacing groove activity cup joint in will on the gag lever post moving movable support mounting is on heavy pad, moving movable support and the equal rotatable couple that is provided with in fixed bolster's top, the impartial interval is provided with on moving movable support and the inboard heavy pad of fixed bolster the wire rope handling hole, the flotation tank sets up back in fixed bolster and moving movable support, the flotation tank passes through the hawser passes couple and wire rope handling hole restrict.

Description

Shifting device for large-scale prefabricated underwater mat

Technical Field

The utility model relates to the technical field of offshore wind power, in particular to a waterborne prefabricating device suitable for an offshore wind power cylinder type foundation.

Background

In recent years, the scale development speed of global offshore wind power is obviously accelerated. With the capacity expansion of offshore wind turbine generators and the gradual expansion of wind farm positions to deep and far sea, offshore wind turbine foundations are gradually developed from onshore prefabrication-offshore installation to direct offshore prefabrication. However, large structures such as wind turbine foundations, underwater sinkers and the like are difficult to displace in water due to large sizes and large masses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide the displacement device for the large-scale prefabricated underwater mat, which can perform the water prefabrication and displacement of the large-scale mat; after the mat is prefabricated on the above-water prefabricated platform, the mat can be quickly and conveniently moved to a specified construction site, so that subsequent construction activities can be carried out in order.

The purpose of the utility model is realized by the following technical scheme:

a displacement device for a large-scale prefabricated underwater mat comprises a prefabricated platform, a mat, a fixed support, a hook, a rope threading hole, a limiting rod, a movable support, a buoyancy tank and a cable; the sinking pad is of a hexagonal structure, pouring construction is completed on the upper surface of the prefabricated platform, two opposite side edges of the sinking pad are provided with the fixed support, the limiting rods are mounted on other side edges, the bottom of the moving support is provided with limiting grooves, the limiting grooves are movably sleeved on the limiting rods, the moving support is mounted on the sinking pad, the tops of the moving support and the fixed support are provided with rotatable hooks through cross rods, the rope penetrating holes are formed in the sinking pad on the inner sides of the moving support and the fixed support at equal intervals, the buoyancy tank is arranged in the fixed support and the moving support, and is limited by the rope penetrating through the hooks and the rope penetrating holes.

Furthermore, the sinking pad is of a concrete structure with the thickness of 0.3-0.5 m.

Furthermore, the stringing hole is positioned right below the hook.

Furthermore, the number of the side edges of the mat on which the limiting rods are arranged is 3-4, and the number of the limiting grooves is matched with the number of the limiting rods.

Furthermore, the pipe diameter of the limiting groove is larger than the outer diameter of the limiting rod.

Furthermore, the length of the cross rod extending out of the tops of the movable support and the fixed support is larger than the width of the small buoyancy tank.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

1. the device can be used for prefabricating a large-scale underwater mat, and displacement is realized by providing buoyancy through the buoyancy tank, so that the use of machines such as a large crane is avoided.

2. The floating box is limited at the inner sides of the six sides of the mat by the combined structures of the fixed support, the movable support, the cable and the like, so that the reliability of the displacement process of the mat is ensured; after the mat is shifted, the movable support, the buoyancy tank and the like can be detached, so that the subsequent construction links needing to be carried out on the mat are not affected; the device has the advantages of simple structure, easy realization, repeated utilization and good application prospect.

Drawings

FIG. 1 is a schematic diagram of the structure of a prefabricated part of a mat according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the mobile carriage according to the embodiment of the present invention after installation;

FIG. 3 is a schematic illustration of the embodiment of the utility model after installation of the buoyancy tank;

FIG. 4 is a schematic structural diagram of a floating and shifting process in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a cylindrical foundation to be poured in the embodiment of the utility model;

FIG. 6 is a schematic structural diagram of a cylindrical foundation to be poured in the embodiment of the utility model.

Reference numerals: 1-prefabricating a platform; 2-sinking a cushion; 3-fixing the bracket; 4-hooking; 5-stringing holes; 6-a limiting rod; 7-moving the support; 8-a limiting groove; 9-a buoyancy tank; 10-a cable; 11-cylinder type foundation.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The utility model provides a large-scale displacement device for a prefabricated underwater mat, and relates to a prefabricated platform 1, a mat 2, a fixed support 3, a hook 4, a rope through hole 5, a limiting rod 6, a movable support 7, a limiting groove 8, a buoyancy tank 9, a cable 10 and a cylindrical foundation 11. Wherein, the size of the prefabricated platform 1 is 50m multiplied by 3.5m and can be lifted; the mat 2 is a hexagonal concrete structure with a side distance of 36m, a thickness of 0.35m and an area of about 1000m²Weighing about 1000 t; the tops of the fixed support 3 and the movable support 7 are provided with a rotatable hook 4 through a cross bar,

the rope threading hole 5 is arranged on the inner side of the six sides of the sinking pad and right below the hook; the limiting rod 6 is positioned at the outer side of the other four edges of the sinking pad, the diameter is 0.3m, and 4 limiting rods are arranged at each edge; the number of the movable supports 7 is 4, the limiting grooves 8 are formed in the bottoms of the movable supports, the number and the positions of the limiting grooves correspond to those of the limiting rods, and the size of the limiting rods is 0.4m multiplied by 0.6 m. The buoyancy tank 9 is made of pure steel material in this embodiment.

Specifically, the displacement method of the large-scale prefabricated underwater mat comprises the following specific construction steps:

firstly, prefabricating a sinking pad 2 on a prefabricated platform 1, wherein the prefabricated platform comprises a fixed support 3, a hook 4, a rope penetrating hole 5 and a limiting rod 6, which are fixed on the sinking pad, and after prefabrication is finished, the prefabricated platform and the sinking pad on the prefabricated platform are immersed into water together; subsequently, lifting and hanging the 4 movable supports 7 to the vicinity of the sinking pad, respectively corresponding the limiting grooves 8 of the 4 movable supports to the limiting rod positions on the 4 sides of the sinking pad, slowly pushing the movable supports in and finally completing the installation of the movable supports; then, floating 6 floating boxes 9 above the mat one by one, turning over and standing up after filling water, slowly sinking and standing in the center of the mat, and then pushing the floating boxes into a fixed support or a movable support respectively; at the moment, the hook faces upwards, so that the buoyancy tank 9 is not prevented from being embedded into the support; connecting a rope threading hole with a rope 10, rotating the hook to enable the hook to face downwards, hanging the rope on the hook, then rotating the hook to enable the hook to face upwards to prevent the rope from unhooking, and limiting the floating box 6 at the inner side of the edge of the sinking mat 6; discharging a proper amount of water in the buoyancy tank through an air pump, floating the water upwards and acting on the fixed support and the movable support, and jacking and floating the sinking pad; after the floating structure is integrally moved to a preset position, filling water into the buoyancy tank to enable the structure to integrally sink, untying the mooring rope, and removing the buoyancy tank and the movable support; and finally, moving the cylindrical foundation 11 to a sinking pad and carrying out subsequent construction pouring work.

In this embodiment, after the mat displacement is completed, the method can be used for construction and pouring of the offshore wind power cylindrical foundation and also can be used for other large structures needing to be constructed on water.

The present invention is not limited to the above-described embodiments. The foregoing description of the specific embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above specific embodiments are merely illustrative and not restrictive. Those skilled in the art can make many changes and modifications to the utility model without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A displacement device for a large-scale prefabricated underwater mat comprises a prefabricated platform and is characterized by further comprising a mat, a fixed support, a hook, a rope threading hole, a limiting rod, a movable support, a buoyancy tank and a cable; the sinking pad is of a hexagonal structure, pouring construction is completed on the upper surface of the prefabricated platform, two opposite side edges of the sinking pad are provided with the fixed support, the limiting rods are mounted on other side edges, the bottom of the moving support is provided with limiting grooves, the limiting grooves are movably sleeved on the limiting rods, the moving support is mounted on the sinking pad, the tops of the moving support and the fixed support are provided with rotatable hooks through cross rods, the rope penetrating holes are formed in the sinking pad on the inner sides of the moving support and the fixed support at equal intervals, the buoyancy tank is arranged in the fixed support and the moving support, and is limited by the rope penetrating through the hooks and the rope penetrating holes.

2. The displacement device of the large-scale prefabricated underwater mat according to claim 1, wherein the mat is a concrete structure with a thickness of 0.3-0.5 m.

3. The displacement device for large-scale prefabricated underwater mat according to claim 1, wherein the rope through hole is positioned right below the hook.

4. The displacement device for the large-scale prefabricated underwater mat according to claim 1, wherein the number of the limiting rods arranged on each side edge of the mat is 3-4, and the number of the limiting grooves is matched with the number of the limiting rods.

5. The apparatus for displacing a prefabricated large underwater mat according to claim 1, wherein the pipe diameter of the limiting groove is larger than the outer diameter of the limiting rod.

6. The displacement device for large-scale prefabricated underwater mat according to claim 1, wherein the length of the cross bar extended from the top of the moving bracket and the fixed bracket is greater than the width of the small buoyancy tank.