Overall lifting device of offshore photovoltaic platform

Abstract

The utility model discloses an integral lifting device of an offshore photovoltaic platform. The integral lifting device comprises an upper lifting frame, two upper steel wire ropes, a lower lifting frame and four lower steel wire ropes. The upper hanging bracket is a rectangular frame; the two upper steel wire ropes are connected between the top surfaces of the four corners of the upper hanging bracket and a main hook of the crane ship; the lower lifting frame comprises two lifting beams and two groups of buoys; the two lifting beams are respectively positioned below the two upper cross beams of the upper lifting frame; the inner side faces of the two ends of each lifting beam are each provided with a concave through groove, the opening end of each concave through groove is hinged to a side door, and a square inserting hole is defined by the concave through grooves and the side doors. The two groups of buoys are respectively bound on the top surfaces of the two lifting beams; four fulcrum seats of the photovoltaic platform are inserted into four insertion holes of the lower lifting frame; the four lower steel wire ropes are connected between the four corners of the upper lifting frame and the two ends of the two lifting beams of the lower lifting frame. According to the utility model, the installation efficiency of the photovoltaic platform can be effectively improved, and the offshore operation time is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a whole lifting device of offshore photovoltaic platform. BACKGROUND

[0002] Offshore photovoltaic is a new ocean energy utilization mode, offshore photovoltaic is the construction solar photovoltaic power generation system in offshore, mudflat and other marine environment, and becomes the darling of solar energy utilization field by the advantages of rich resources, high efficiency etc.. The current offshore photovoltaic structure has floating type and pile foundation fixed type. The photovoltaic platform unit of pile foundation fixed type structure includes a photovoltaic platform and four piles set on the sea. The photovoltaic platform is truss structure and includes photovoltaic platform main body and four legs connected at the bottom of photovoltaic platform main body, the bottom of each leg is provided with a fulcrum seat, and the top surface of photovoltaic platform main body is installed with photovoltaic panel. The height of the front two legs in four legs is greater than the height of the rear two legs. The top of four piles is respectively provided with a connecting seat for one-to-one corresponding butt joint with four fulcrum seats of photovoltaic platform, so that the photovoltaic platform is inclined 15 DEG in the mode of high front and low rear. The hoisting method of the existing photovoltaic platform needs to reserve four hoisting holes (not installing photovoltaic panel) corresponding to four fulcrum seats in photovoltaic platform main body, and four steel wires are one-to-one corresponding from four hoisting holes to four fulcrum seats after connecting through four lifting lugs on rectangular lifting frame and hoisting, after the butt joint of four fulcrum seats of photovoltaic platform and four piles, the photovoltaic panel at four hoisting holes is supplemented on the sea, not only increases the sea operation time, but also has great risk of high-altitude manual work in marine environment. CONTENT OF UTILITY MODEL

[0003] The utility model aims at overcoming the defects of prior art and provides a whole lifting device of offshore photovoltaic platform, which can effectively improve the installation efficiency of photovoltaic platform, greatly reduces the sea operation time and has higher safety.

[0004] The utility model aims at overcoming the defects of prior art and provides a whole lifting device of offshore photovoltaic platform, which can effectively improve the installation efficiency of photovoltaic platform, greatly reduces the sea operation time and has higher safety.

[0005] The upper suspension includes two upper horizontal beams and two upper vertical beams. The length of the upper horizontal beams is greater than the width of the main body of the photovoltaic platform. The spacing between the two upper horizontal beams is adapted to the lateral spacing of the support base of the photovoltaic platform. An upper lifting lug is fixed on the top surface of each end of the two upper horizontal beams. The two upper vertical beams are connected one-to-one between the inner sides of the two ends of the two upper horizontal beams, forming a rectangular frame with the two upper horizontal beams.

[0006] The two ends of one upper wire rope are connected one-to-one to the two upper lifting lugs of one upper crossbeam of the upper gantry, and the two ends of another upper wire rope are connected one-to-one to the two upper lifting lugs of another upper crossbeam of the upper gantry. The middle of both upper wire ropes is hung on the main hook of the crane ship.

[0007] The lower support frame includes two lifting beams and two sets of floats; the two lifting beams are located below the two upper crossbeams of the upper support frame, and the length of the lifting beams is adapted to the length of the upper crossbeams; each lifting beam has a lower lifting lug fixed on its top surface at both ends, which corresponds to the two upper lifting lugs on the corresponding upper crossbeam; the cross-section of each lifting beam is rectangular, and a concave through groove is opened on the inner side of each end of each lifting beam. The opening end of each concave through groove is hinged to a side door, so that the concave through groove and the side door form a square insertion hole. The axial distance between the two insertion holes is adapted to the longitudinal distance of the support base on the photovoltaic platform.

[0008] Two sets of pontoons were tied one-to-one to the top surface of the two lifting beams;

[0009] The four support points of the photovoltaic platform are inserted into the four holes of the lower frame in a one-to-one correspondence.

[0010] The four lower steel wire ropes are connected one-to-one between the four upper lifting lugs of the upper scaffold and the four lower lifting lugs of the lower lifting frame.

[0011] The aforementioned overall lifting device for offshore photovoltaic platforms includes a lifting beam that is a square tube truss comprising two upper main beams, two lower main beams, multiple upper horizontal connecting rods spaced apart between the two upper main beams, multiple lower horizontal connecting rods spaced apart between the two lower main beams, and multiple vertical connecting rods spaced apart between the two upper main beams and their corresponding lower main beams. The top surface of each concave through-slot on each lifting beam is composed of two upper horizontal connecting rods and one upper main beam, and the bottom surface of each concave through-slot is composed of two lower horizontal connecting rods and one lower main beam.

[0012] In the aforementioned overall lifting device for offshore photovoltaic platforms, the side door is a rectangular frame, one end of which is hinged to the inner side of the lifting beam via a pivot. A pin hole is installed on the top surface of the side door, which is engaged with a pin installed on the lifting beam, so that the side door is locked in place by the pin. A hydraulic cylinder is connected to the outer side of each side door.

[0013] In the aforementioned overall lifting device for offshore photovoltaic platforms, an arc-shaped limiting block is fixed to each of the four sides of the insertion hole, and the center of the inner arc surface of the four limiting blocks is located on the axis of the insertion hole.

[0014] The aforementioned overall lifting device for the offshore photovoltaic platform includes two sets of pontoons, each equipped with a water pump to control the buoyancy of the pontoons.

[0015] The overall lifting device for offshore photovoltaic platforms of this utility model has the following characteristics:

[0016] The overall lifting device of this utility model mainly includes a rectangular upper frame, a lower frame consisting of two lifting beams, four lower steel wire ropes connecting the upper frame and the lower frame, and two upper steel wire ropes connecting the upper frame and the main hook of the crane vessel. This utility model has two insertion holes on each of the two lifting beams, and a side door is provided on the side of each insertion hole, into which the four support points at the bottom of the photovoltaic platform are inserted one by one. This utility model also has buoyancy-adjustable floats tied to the two lifting beams. When the lower lifting frame is installed on the transport barge, it can be used as a transport tool for the photovoltaic platform. When the lower lifting frame is connected to the upper gantry via four lower steel wire ropes, and the upper gantry is connected to the main hook of the crane vessel via two upper steel wire ropes, the photovoltaic platform can be quickly and conveniently lifted to sea and installed on four pile foundations. Then, the side door of the insertion hole is opened, and the buoyancy of the lifting beam is adjusted by the float, allowing the lower lifting frame to detach from the photovoltaic platform and be towed and floated onto the transport barge. This utility model's integrated lifting device can effectively improve the installation efficiency of the photovoltaic platform, and eliminates the need to pre-drill installation holes on the main body of the photovoltaic platform, greatly reducing offshore operation time and providing high safety. Attached Figure Description

[0017] Figure 1 This is a side view of the overall lifting device for the offshore photovoltaic platform according to this utility model;

[0018] Figure 2 This is a top view of the overall lifting device for the offshore photovoltaic platform according to this utility model;

[0019] Figure 3a This is a side view of the lifting beam in the overall lifting device for offshore photovoltaic platforms according to this utility model.

[0020] Figure 3b This is a top view of the lifting beam in the overall lifting device for the offshore photovoltaic platform of this utility model;

[0021] Figure 3c yes Figure 3b Enlarged view of the P-section;

[0022] Figure 4This is a side view of the overall lifting device for offshore photovoltaic platforms using this utility model during step one of the lifting process.

[0023] Figure 5 This is a top view of step two during the hoisting of a marine photovoltaic platform using the overall lifting device of this utility model;

[0024] Figure 6 This is a side view of the first state when the overall lifting device for the offshore photovoltaic platform of this utility model is used in step three during the lifting of the photovoltaic platform;

[0025] Figure 7 This is a second side view of the overall lifting device for offshore photovoltaic platforms using this invention, during step five of the photovoltaic platform lifting process.

[0026] Figure 8 This is a second side view of the overall lifting device for offshore photovoltaic platforms using this utility model during step five of the lifting process;

[0027] Figure 9 This is a side view of step five during the hoisting of a photovoltaic platform using the overall lifting device of this utility model.

[0028] Figure 10 This is a side view of step six during the hoisting of a marine photovoltaic platform using the overall lifting device of this utility model. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Please see Figures 1 to 3c The present invention relates to an overall lifting device for an offshore photovoltaic platform, which is used to lift the photovoltaic platform onto a rectangular pile foundation 100 formed by four axes connected in the sea. The photovoltaic platform 1 includes a photovoltaic platform body 10, four legs 11 connected to the bottom of the photovoltaic platform body 10, and four fulcrum seats 12 that are connected to the bottom of the four legs 11 and are connected to the top connecting seats of the four pile foundations 100 respectively.

[0031] The present invention relates to an overall lifting device for an offshore photovoltaic platform, comprising an upper lifting frame 2, two upper steel wire ropes 3, a lower lifting frame 4, and four lower steel wire ropes 5.

[0032] The upper suspension frame 2 includes two upper horizontal beams 21 and two upper vertical beams 22. The length of the upper horizontal beams 21 is greater than the width of the photovoltaic platform body 10. The spacing between the two upper horizontal beams 22 is adapted to the lateral spacing of the support base 12 of the photovoltaic platform 1. An upper lifting lug 23 is fixed on the top surface of each end of the two upper horizontal beams 21. The two upper vertical beams 22 are connected one-to-one between the inner sides of the two ends of the two upper horizontal beams 21, so that the two upper vertical beams 22 and the two upper horizontal beams 21 form a rectangular frame.

[0033] One upper wire rope 3 is connected at both ends to the two upper lifting lugs 23 of one upper crossbeam 21 of the upper gantry 2, and the other upper wire rope 3 is connected at both ends to the two upper lifting lugs 23 of another upper crossbeam 21 of the upper gantry 2. The middle of both upper wire ropes 3 is hung on the main hook of the crane vessel 400.

[0034] The lower lifting frame 4 includes two lifting beams 41 and two sets of floats 44; the two lifting beams 41 are located below the two upper crossbeams 21 of the upper lifting frame 2, and the length of the lifting beams 41 is adapted to the length of the upper crossbeams 21; each lifting beam 41 has a lower lifting lug 42 fixed on its top surface at both ends, corresponding to the two upper lifting lugs 23 on the corresponding upper crossbeam 21; the cross-section of each lifting beam 41 is rectangular, and a concave through groove is opened on the inner side of each end of each lifting beam 41. A side door 43 is hinged to the opening end of each concave through groove, so that the concave through groove and the side door 43 form a square insertion hole 40. The outer side of each side door 43 is connected to a hydraulic cylinder 430, which is connected to the hydraulic cylinder 430. The hydraulic cylinder seat is installed on the inner side of the lifting beam 41, so that the side door 43 is controlled by the hydraulic cylinder 430. An arc-shaped limiting block 400 is fixed on each of the four sides of the insertion hole 40. The center of the inner arc surface of the four limiting blocks 400 is located on the axis of the insertion hole 40, which can guide the insertion of the pile foundation 100 well. The axial distance between the two insertion holes 40 is adapted to the longitudinal distance of the support seat 12 of the photovoltaic platform. One end of the side door 43 is hinged to the inner side of the lifting beam 41 through the pivot 431. A pin hole 432 is installed on the top surface of the other end of the side door 43. The pin hole 432 is inserted into the pin 433 installed on the top surface of the lifting beam 41, so that the side door 43 closes the corresponding insertion hole 40 through the pin 433.

[0035] The lifting beam 41 adopts a square tube truss and includes two upper main beams 411, two lower main beams 412, multiple upper horizontal connecting rods 413 spaced between the two upper main beams 411, multiple lower horizontal connecting rods 414 spaced between the two lower main beams 412, and multiple vertical connecting rods 415 spaced between the two upper main beams 411 and the corresponding lower main beams 412; the top surface of each concave through slot on each lifting beam 41 is composed of two upper horizontal connecting rods 413 and one upper main beam 411, and the bottom surface of each concave through slot is composed of two lower horizontal connecting rods 414 and one lower main beam 412; the side door 43 hinged to each concave through slot is a rectangular frame.

[0036] Two sets of pontoons 44 are tied to the top surfaces of two lifting beams 41 in a one-to-one correspondence, and each set of pontoons 44 is equipped with a water pump to control the buoyancy of the pontoons.

[0037] The four support points 12 of the photovoltaic platform 1 are inserted into the four sockets 40 of the lower support frame 4 in a one-to-one correspondence;

[0038] The four lower steel wire ropes 5 are connected one-to-one between the four upper lifting lugs 23 of the upper frame 2 and the four lower lifting lugs 42 of the lower lifting frame 4.

[0039] Please see again Figures 4 to 10 The overall lifting device for offshore photovoltaic platforms using this utility model includes the following steps when lifting the photovoltaic platform:

[0040] Step 1: Using the lower lifting frame 4 as the transport fixture for the photovoltaic platform 1, first close the side doors 43 of the four insertion holes 40 on the lower lifting frame 4 using the corresponding hydraulic cylinders 430, and then lock the corresponding insertion holes 40 with the pins 433. Then, install the lower lifting frame 4 on the main deck of the transport barge 300 (see...). Figure 4 );

[0041] Step two: After the photovoltaic platform 1 is processed and assembled on land, four pairs of lifting holes 1A are evenly distributed on the main body 10 of the photovoltaic platform. The platform is then hoisted onto the transport barge 300 after being connected to the four pairs of lifting holes 1A using the land-based hoisting frame 200. The four support points 12 of the photovoltaic platform 1 are then inserted one-to-one into the four insertion holes 40 of the lower lifting frame 4 (see...). Figure 5 );

[0042] Step 3: On the transport barge 300, first install photovoltaic panels on the four pairs of lifting holes 1A on the main body 10 of the photovoltaic platform (see...). Figure 6 ), and connect the corresponding electrical lines, and then transport the photovoltaic platform and the lower frame 4 together to the project site location by transport barge 300;

[0043] Step four: At the site location, the main hook on the crane vessel 400 is connected to the upper gantry 2 via two upper steel wire ropes 3, and the upper gantry 2 is connected to the lower gantry 4 via four lower steel wire ropes 5 (see...). Figure 7 Then, the photovoltaic platform and its lower support frame 4 are lifted together from the transport barge 300, and the photovoltaic platform 1 is installed onto the four pile foundations 100 (see...). Figure 8 The top connecting seats of the four pile foundations 100 are inserted one-to-one into the four insertion holes 40 of the lower support frame 4, so that the four support seats 12 of the photovoltaic platform 1 are connected one-to-one with the connecting seats of the four pile foundations 100, thus completing the installation of one photovoltaic platform unit (see...). Figure 9 );

[0044] Step 5: First, disconnect the four lower lifting lugs 42 of the lower lifting frame 4 from the four lower steel wire ropes 5 one by one. Then, use the water pumps in the two sets of floats 44 on the lower lifting frame 4 to adjust the buoyancy of the two lifting beams 41, so that the two lifting beams 41 are lower than the support base 12 of the photovoltaic platform 1 (see...). Figure 10 Open the latches 433 on each side door 43, and then open the four side doors 43 with the four hydraulic cylinders 430 one by one. Then, pull out the two lifting beams 41 in the opposite direction to the corresponding side door 43 to the open water. Finally, lift the two lifting beams 41 onto the transport barge 300.

[0045] Alternatively, first, disconnect the two lower lifting lugs 42 on one lifting beam 41 from the corresponding two lower steel wire ropes 5. Then, adjust the buoyancy of the other lifting beam 41 through the float 44 to be lower than the support seat 12 of the photovoltaic platform. Next, open the side doors 43 of the two insertion holes 40 on the lifting beam 41, and then pull the lifting beam 41 out in the direction away from the side doors 43. Then, lower the upper gantry 2 and the pulled-out lifting beam 41 onto the transport barge 300. Then, open the side doors 43 of the two insertion holes 40 on the other lifting beam 41, and then pull the lifting beam 41 out in the direction away from the side doors 43. Finally, lift it back onto the transport barge 300 by the crane vessel 400.

[0046] Step six: The crane vessel 400 and the transport barge 300 will return the entire lifting device to the processing site to prepare for the installation of the next photovoltaic platform.

[0047] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A lifting device for a whole offshore photovoltaic platform, which is used to lift the photovoltaic platform to four pile foundations arranged in a rectangle on the sea; the photovoltaic platform comprises a photovoltaic platform body, four supporting legs connected to the bottom of the photovoltaic platform body, and four supporting point seats connected to the bottom of the four supporting legs and corresponding to the top of the four pile foundations; the lifting device comprises an upper lifting frame, two upper steel wires, a lower lifting frame, and four lower steel wires; characterized in that, the upper lifting frame comprises two upper cross beams and two upper longitudinal beams, the length of the upper cross beams is greater than the width of the photovoltaic platform body, and the distance between the two upper cross beams is adapted to the horizontal distance between the supporting point seats of the photovoltaic platform; an upper lifting lug is fixed to the top surface of each end of the two upper cross beams; the two upper longitudinal beams are connected between the inner side surfaces of the two ends of the two upper cross beams, and form a rectangular frame with the two upper cross beams; one end of one upper steel wire is connected to the two upper lifting lugs of one upper cross beam of the upper lifting frame, and the other end of the upper steel wire is connected to the two upper lifting lugs of the other upper cross beam of the upper lifting frame; the middle part of the two upper steel wires is hung on the main hook of a crane ship; the lower lifting frame comprises two lifting beams and two groups of floating buoys; the two lifting beams are located below the two upper cross beams of the upper lifting frame, and the length of the lifting beams is adapted to the length of the upper cross beams; an lower lifting lug corresponding to the two upper lifting lugs on the corresponding upper cross beam is fixed to the top surface of each end of each lifting beam; the cross section of each lifting beam is a rectangular frame, and a concave slot is formed in the inner side surface of each end of each lifting beam; the opening end of each concave slot is hinged to a side door, so that the concave slot and the side door form a square insertion hole, and the horizontal distance between the two insertion holes is adapted to the vertical distance between the supporting point seats on the photovoltaic platform; two groups of floating buoys are tied to the top surface of the two lifting beams; the four supporting point seats of the photovoltaic platform are inserted into the four insertion holes of the lower lifting frame; four lower steel wires are connected between the four upper lifting lugs of the upper lifting frame and the four lower lifting lugs of the lower lifting frame.

2. The integrated lifting device for offshore photovoltaic platforms according to claim 1, characterized in that, the lifting beam is a square tube truss, which comprises two upper main beams, two lower main beams, a plurality of upper horizontal connecting rods spaced apart and connected between the two upper main beams, a plurality of lower horizontal connecting rods connected between the two lower main beams, and a plurality of vertical connecting rods spaced apart and connected between the two upper main beams and the corresponding lower main beams; the top surface of each concave slot on each lifting beam is formed by two upper horizontal connecting rods and one upper main beam, and the bottom surface of each concave slot is formed by two lower horizontal connecting rods and one lower main beam.

3. The integrated lifting device for offshore photovoltaic platforms according to claim 1, characterized in that, the side door is a rectangular frame, one end of the side door is hinged to the inner side surface of the lifting beam through a rotating shaft, and a latch hole is installed on the top surface of the side door; the latch hole is inserted with a latch installed on the lifting beam, so that the side door is locked to the corresponding insertion hole through the latch; the outer side surface of each side door is connected to a hydraulic oil cylinder.

4. The integrated lifting device for offshore photovoltaic platforms according to claim 1, characterized in that, an arc-shaped limiting block is fixed to the periphery of each insertion hole, and the centers of the inner arcs of the four limiting blocks are located on the axis of the insertion hole.

5. The integrated lifting device for offshore photovoltaic platforms according to claim 1, characterized in that, two groups of floating buoys are provided with water pumps for controlling the buoyancy of the floating buoys.

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