Method for wind power pipe pile sliding on ship

Abstract

The application discloses a method for wind power pipe pile sliding on a ship, which comprises the following steps: arranging a sliding tool at a wharf front, arranging a sliding tool on a transport ship, placing a pipe pile to be transported on a roller frame, calculating the center position of the pipe pile, confirming the pile length and the pile weight, and transporting the pipe pile to the wharf by two front and rear axis module vehicles; separating a single pile from the front axis module vehicle, driving the rear axis module vehicle to drive out from the side, lowering a lifting sliding device, driving the lifting sliding device to lift and move to a specified position together in the direction of a cab, untying a cable (raising an anchor) of the transport ship, and finally fixing the single pile according to requirements. The application can be applied to a tool for low tide, is not limited by a wharf and water depth of the wharf, can be used to smoothly and stably slide the wind power pipe pile on the ship at low tide, all kinds of tools used can be repeatedly used, and the use condition is not affected by tides and a height of a dry deck of a ship, so that the cost of loading on the ship is greatly reduced, and the loading time of the wind power pipe pile on the ship is shortened.

Description

Technical Field

[0001] This invention belongs to the field of wind power pipe pile technology, specifically relating to a method for sliding wind power pipe piles onto a ship using a sliding fixture. Background Technology

[0002] Traditional methods for loading wind turbine piles onto ships mainly involve hoisting them onto the ship or using modular vehicles for roll-on / roll-off loading; hoisting onto the ship (such as...) Figure 1 As shown, this method requires the use of a crane with a large lifting capacity and slings to lift the pipe piles onto the ship. The main drawback of this method is that the lifting weight is limited by the crane, while the weight of pipe piles typically exceeds 1000 tons, making it difficult to select a heavy-duty crane. Cranes capable of meeting the required lifting capacity are often expensive to purchase or rent. Their application is also limited by the wharf and the water depth.

[0003] Roll-on / roll-off (Ro-Ro) loading is relatively inexpensive and convenient, but it is affected by tides and the ship's freeboard. It can only be used at high tide; at low tide, Ro-Ro loading is often unusable (e.g., Figure 2 (As shown). Summary of the Invention

[0004] The purpose of this invention is to provide a method for sliding wind turbine piles onto a ship to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for sliding wind turbine piles onto a ship, comprising the following steps:

[0006] a) Deploying sliding fixtures along the wharf's front edge:

[0007] Before high tide, the No. 4 lifting and sliding tooling was arranged in advance at the front of the wharf as an emergency backup. The No. 1 shore sliding track and the No. 2 shore sliding track were laid horizontally at the work site on the wharf. Considering that the module vehicle needs to drive out from the side during the sliding and loading process, the No. 1 shore sliding track was not laid continuously for the time being. After the track was laid, the No. 3 lifting and sliding device and the No. 4 lifting and sliding device were placed on the wharf.

[0008] b): Deploying skid shunting fixtures on the transport ship:

[0009] Before high tide, the transport ship (front pilot ship) is positioned along the edge of the dock (facing the dock), and two ship-sliding tracks are laid on the ship's deck using a crane. The No. 1 lifting sliding device and the No. 2 lifting sliding device are then placed at the stern.

[0010] c): Place the pipe pile to be transferred on the roller frame, calculate the center position of the pipe pile, confirm its length and weight, and transport it to the dock using two axle modular vehicles.

[0011] d): Align the two shipboard sliding tracks with the No. 1 and No. 2 shore sliding tracks at the front of the dock on the same axis;

[0012] e): The No. 1 lifting and sliding device is slowly lifted, and part of the weight of the single pile falls on the stern of the barge, so the barge will sink. The support of the No. 1 lifting and sliding device stops lifting. After the ballast water is adjusted and the tide rises to raise the barge, the No. 1 lifting and sliding device continues to lift. The above process is repeated until the single pile is separated from the front axle module vehicle. Then the front axle module vehicle drives out from the side. At this time, the weight of the single pile is borne by the No. 1 lifting and sliding device and the thick axle module vehicle.

[0013] f): Insert the No. 3 lifting and sliding device from the bottom of the pile, then lift the No. 3 lifting and sliding device, and drive the rear axle module vehicle out from the side. At this time, the weight of a single pile is borne by the No. 1 lifting and sliding device and the No. 3 lifting and sliding device. During this process, adjust the ballast water in time to regulate the ship's state.

[0014] g): Lay the No. 1 shore sliding track to the predetermined position, ensuring the axis is aligned. Under its own jacking action, the No. 1 lifting sliding device drives the No. 3 lifting sliding device to move together towards the bridge. During this process, the weight of a single pile is borne by the No. 1 lifting sliding device and the No. 3 lifting sliding device. During this process, the ballast water is adjusted in time to regulate the ship's state.

[0015] h): The No. 2 lifting and sliding device is lifted, the No. 3 lifting and sliding device is lowered, and the No. 1 lifting and sliding device 1, under its own jacking action, drives the No. 2 lifting and sliding device to move together towards the bridge until it reaches the designated position. During this process, the weight of a single pile is borne by the No. 1 lifting and sliding device and the No. 2 lifting and sliding device. During this process, the ballast water is adjusted in time to regulate the ship's state.

[0016] i) The transport ship unmoors (anchors) and is aligned with the No. 2 approach bridge and moored at the front edge of the wharf. The crane is used to adjust the transport supports on the ship so that they are evenly distributed under the pile. The No. 1 and No. 2 lifting and sliding devices are depressurized so that the single pile rests on multiple transport supports. Then, the No. 1 and No. 2 lifting and sliding devices and the sliding track are hoisted to the wharf surface in sequence. Finally, the single pile is fixed by sea rigging as required.

[0017] Preferably, at least six transport supports are arranged in step i).

[0018] Preferably, the center distance between the No. 1 shore sliding track and the No. 2 shore sliding track is 10m-12m.

[0019] Preferably, in step b), the distance between the #2 lifting and sliding device and the stern is 3m-5m.

[0020] Preferably, the No. 1, No. 2, No. 3 and No. 4 lifting and sliding devices each include a double-frame structure, a load-bearing beam, a jacking device and a jacking limiting device. A load-bearing beam is fitted between the double-frame structures. The load-bearing beam is lifted and lowered synchronously on the top crossbeam of the double-frame structure by a lifting cylinder, a lifting jack and steel strands. The jacking device and the jacking limiting device are located at the lower end of the base beam of the double-frame structure.

[0021] Preferably, an angle sensor is mounted on the base beam.

[0022] Preferably, the double-frame structure is further provided with a windproof wedge device, an anchor cable device, a weight indicator device, and a height indicator device.

[0023] Preferably, two support points are symmetrically provided on the support beam, and each support point is provided with an adjustment seat.

[0024] Preferably, a lateral movement device is installed at the bottom of the No. 3 and No. 4 lifting and sliding devices to realize the lateral movement function.

[0025] The technical effects and advantages of this invention are as follows:

[0026] 1. This invention is applicable to tooling at low tide levels, is not limited by the dock or the depth of the dock, and can be used to smoothly and steadily slide wind turbine piles onto the ship at low tide levels.

[0027] 2. All types of tools used in this method of loading onto a ship can be reused, and the conditions of use are not affected by tides and ship freeboard, which greatly reduces the cost of loading onto a ship and shortens the time for loading wind turbine piles onto a ship. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the current hoisting method;

[0029] Figure 2 This is a schematic diagram of the current roll-on / roll-off (Ro-Ro) system;

[0030] Figure 3 This is a schematic diagram of the sliding loading method of the present invention;

[0031] Figures 4.1-4.2 A schematic diagram of the sliding device structure is provided.

[0032] Figure 5 This is a schematic diagram of the jacking and sliding mechanism;

[0033] Figure 6 A schematic diagram for calculating the stroke of the hydraulic cylinder in the lifting device;

[0034] Figure 7A schematic diagram showing the top of a transport ship docking at a pier;

[0035] Figure 8 Schematic diagram of preparation for skid loading;

[0036] Figure 9 A schematic diagram of a 36-axle modular vehicle approaching the edge of the dock;

[0037] Figure 10 A schematic diagram showing the removal of the 36-axis modular vehicle;

[0038] Figure 11 A schematic diagram of a 28-axle modular vehicle approaching the edge of the dock;

[0039] Figure 12 Schematic diagram of the installation of the No. 3 lifting and sliding device at the bottom of the pile;

[0040] Figure 13 A schematic diagram showing the removal of the 28-axle modular vehicle;

[0041] Figure 14 Schematic diagram for laying the remaining No. 1 sliding track;

[0042] Figure 15 This is a schematic diagram of the No. 3 lifting and sliding device near the front edge of the dock.

[0043] In the diagram: 1-1# lifting and sliding device, 2-2# lifting and sliding device, 3-3# lifting and sliding device, 4-4# lifting and sliding device, 11-1# shore sliding track, 12-2# shore sliding track, 6-ship sliding track, 101-double door frame structure, 102-bearing beam, 103-pushing device, 104-pushing limit device, 105-lifting cylinder, 106-lifting top, 107-steel strand, 108-tilt sensor, 109-support point support. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Taking a load capacity of 1800t as an example, such as Figures 3-15 This invention illustrates a specific embodiment of a method for sliding wind turbine pipe piles onto a ship:

[0046] Sliding fixtures are deployed along the front edge of the wharf:

[0047] Before high tide, the No. 4 lifting and sliding device was pre-positioned at the front of the wharf as an emergency backup. The No. 1 and No. 2 shore sliding tracks were laid horizontally at the work site on the wharf. Considering that the modular vehicle needs to drive out from the side during the sliding and loading process, the No. 1 shore sliding track was not laid continuously for the time being. The center distance between the two sliding tracks was 11m (each track was located on a crossbeam). After the tracks were laid, the No. 3 lifting and sliding device was placed on the rear edge of the wharf.

[0048] Deploying skid gliding fixtures on transport ships:

[0049] Before high tide, the transport ship (the lead ship) berthed along the edge of the dock (directly facing the dock), and a 350t crane laid two sliding tracks on the ship's deck as required, and placed lifting sliding devices No. 1 and No. 2 at the stern, with the distance between lifting sliding device No. 2 and the stern controlled at about 4m.

[0050] skid loading

[0051] (1) After the sliding fixtures (sliding rails, lifting sliding devices) on the transport ship are installed, the mooring lines are released, and the ship is positioned against the front edge of the dock directly opposite the No. 2 approach bridge (e.g., Figure 7 As shown), secure the mooring line at the stern and tie the inverted figure-eight line in the middle to ensure that the sliding track on the ship is on the same axis as the sliding track on the dock. If it is during a spring tide, two figure-eight anchors need to be dropped at the bow. Connect the power lines of lifting sliding devices #1, #2, and #3 to ensure that the no-load test run is normal.

[0052] (2) Before the slip-shift loading, re-inspect the slip-shifting fixtures and wait for a suitable tide. The modular vehicle slowly moves towards the sea until the 36-axis modular vehicle is about 4m away from the edge of the pier and stops. At this point, the weight of a single pile is shared by two modular vehicles (e.g., Figures 8-9 (as shown);

[0053] (3) The No. 1 lifting and sliding device slowly lifts the barge. Part of the monopile's weight will fall at the stern, causing the barge to sink. The No. 1 lifting and sliding device then stops lifting, waiting for the ballast water to adjust and the tide to rise and raise the barge. The No. 1 lifting and sliding device continues lifting, repeating the above process until the monopile separates from the 36-axle modular vehicle. Then, the 36-axle modular vehicle drives out from the side. At this point, the weight of the monopile is shared by the No. 1 lifting and sliding device and the 28-axle modular vehicle (e.g., ...). Figure 10 (as shown);

[0054] (4) The 28-axle module vehicle, driving the No. 1 lifting and skidding device, continues to move towards the bridge until the 28-axle module vehicle stops 4m away from the edge of the wharf. During this process, the weight of the single pile is shared by the No. 1 lifting and skidding device and the 28-axle module vehicle. Ballast water is adjusted in a timely manner to regulate the ship's condition (e.g., ...). Figure 11 (as shown);

[0055] (5) A 350t crane lifts the No. 3 lifting and sliding device, inserts it from the bottom of the pile, and places it approximately 8m from the bottom of the pile. At this time, the weight of the single pile is still jointly borne by the No. 1 lifting and sliding device and the 28-axle modular vehicle (e.g.) Figure 12 (as shown);

[0056] (6) Step Six: Lifting and sliding device #3 is lifted, and the 28-axle module vehicle drives out from the side. At this time, the weight of the single pile is jointly borne by lifting and sliding devices #1 and #3. During the process, the ballast water is adjusted in a timely manner to regulate the ship's state (e.g., Figure 13 (as shown);

[0057] (7) Lay the remaining No. 1 shore-based sliding track to the predetermined position, ensuring axis alignment. Under its own jacking action, the No. 1 support will drive the No. 3 lifting and sliding device to move together towards the bridge until the center of the No. 3 lifting and sliding device stops moving 4m from the edge of the wharf (at this point, the No. 3 lifting and sliding device will be positioned precisely on the sea-side track beam). During this process, the weight of a single pile is jointly borne by the No. 1 and No. 3 lifting and sliding devices. Ballast water should be adjusted in a timely manner to regulate the ship's condition (e.g., ...). Figure 14 (as shown);

[0058] (8) Lifting and sliding device #2 is raised, lifting and sliding device #3 is lowered, and lifting and sliding device #1, under its own jacking action, moves lifting and sliding device #2 together towards the bridge until it reaches the designated position. During this process, the weight of a single pile is borne jointly by lifting and sliding devices #1 and #2. Ballast water is adjusted in a timely manner to regulate the ship's condition (e.g., Figure 15 (as shown);

[0059] (9) The transport ship unmoored (anchored) and aligned itself with the No. 2 approach bridge at the front of the wharf. The 350t crane was used to adjust the original transport supports on the ship so that the transport supports were evenly distributed under the piles. The No. 1 lifting and sliding device and the No. 2 lifting and sliding device were depressurized so that the single pile was placed on the 6 transport supports. Then, the No. 1 lifting and sliding device, the No. 2 lifting and sliding device and the sliding track were hoisted to the wharf surface in sequence. Finally, the single pile was fixed by sea tying as required. A total of at least 6 transport supports were arranged.

[0060] Calculation of the stroke of the lifting sliding device:

[0061] To ensure that the slip-shift loading capability is available every day of the year, and that the effective loading time is 4 hours per day, the design of the lifting slip-shifting device must fully consider the cylinder stroke.

[0062] Analysis of the Qinglong Port tide table in the "China Coastal Tide Tables (Shanghai Port, Hangzhou Bay) / 2020" shows that, based on the high tide level at 16:50 on April 26, 2019, this tide level is the lowest among all daytime high tide levels in the year, with an elevation of +2.26m (Wusong Elevation).

[0063] The planned sliding loading operation will take place between 15:00 and 19:00 on the same day. The water surface elevation at 15:00 is +1.89m, and the water surface elevation at 19:00 is +1.92m (Wusong elevation). Since the high tide level at this wharf is approximately 0.6m higher than the high tide level at Wusong Port, the initial operating tide level will be calculated as (+1.89)m + 0.6m = +2.49m.

[0064] Considering the modular vehicle's height is 1.5m, the bottom height of the U-shaped bracket on the modular vehicle is 0.4m, and the height of the lifting and sliding device base is 1.68m (including the height of the ship's rails) (e.g. Figure 6 (as shown);

[0065] Therefore, the stroke of the hydraulic cylinder of the lifting sliding device is L = (+6.7m) + 1.5m + 0.4m - (2.49 + 2 + 1.68) = 2.43m;

[0066] Taking into account a certain safety margin, the stroke of the lifting sliding device is set at 3m.

[0067] The applicant further declares that while the above embodiments illustrate the implementation method and apparatus structure of the present invention, the present invention is not limited to the above-described embodiments, meaning that the present invention must rely on the above methods and structures to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions for the selected implementation methods, additions to steps, and selections of specific methods all fall within the protection and disclosure scope of the present invention.

[0068] This invention is not limited to the above-described embodiments. All methods that employ similar structures and approaches to achieve the objectives of this invention are within the scope of protection of this invention.

Claims

1. A method for sliding wind turbine pipe piles onto a ship, characterized in that, Includes the following steps: a): Deploy sliding fixtures along the wharf's front edge: Before high tide, the No. 4 lifting and sliding device (4) is arranged in advance at the front of the wharf as an emergency backup. The No. 1 shore sliding track (11) and the No. 2 shore sliding track (12) are laid horizontally at the work site on the wharf. The No. 1 shore sliding track (11) is not laid in its entirety for the time being. After the track is laid, the No. 3 lifting and sliding device (3) and the No. 4 lifting and sliding device (4) are placed on the wharf. b): Deploying skid slewing fixtures on the transport ship: The transport ship was brought alongside the front edge of the dock, and two ship-sliding rails (6) were laid on the ship deck by a crane. The No. 1 lifting sliding device (1) and the No. 2 lifting sliding device (2) were placed at the stern. c): Place the pipe pile to be transferred on the roller frame, calculate the center position of the pipe pile, confirm its length and weight, and transport it to the dock using two axle modular vehicles. d): Align the two shipboard sliding rails (6) with the No. 1 shore sliding rail (11) and No. 2 shore sliding rail (12) at the front of the dock on the same axis; e): The No. 1 lifting and sliding device (1) is slowly lifted. The weight of the single pile falls on the stern of the ship, so the barge will sink. The support of the No. 1 lifting and sliding device (1) stops lifting. The barge is raised by the adjustment of the ballast water and the rise of the tide. The No. 1 lifting and sliding device (1) continues to lift. The above process is repeated until the single pile is separated from the front axle module vehicle. Then the front axle module vehicle drives out from the side. At this time, the weight of the single pile is borne by the No. 1 lifting and sliding device (1) and the thick axle module vehicle. f): Insert the No. 3 lifting and sliding device (3) from the bottom of the pile, then lift the No. 3 lifting and sliding device (3) and drive the rear axle module vehicle out from the side. At this time, the weight of a single pile is borne by the No. 1 lifting and sliding device (1) and the No. 3 lifting and sliding device (3). During this process, adjust the ballast water in time to regulate the ship's state. g): Lay the No. 1 shore sliding track (11) completely to the predetermined position, ensuring the axis is aligned. Under its own pushing action, the No. 1 lifting sliding device (1) drives the No. 3 lifting sliding device (3) to move together towards the bridge. During this process, the weight of a single pile is borne by the No. 1 lifting sliding device (1) and the No. 3 lifting sliding device (3). During this process, the ballast water is adjusted in time to regulate the ship's state. h): The 2# lifting and sliding device (2) is lifted, the 3# lifting and sliding device (3) is lowered, and the 1# lifting and sliding device (1) drives the 2# lifting and sliding device (2) to be lifted together under its own jacking action, moving towards the bridge until reaching the designated position. During this process, the weight of a single pile is borne by the 1# lifting and sliding device (1) and the 2# lifting and sliding device (2). During this process, the ballast water is adjusted in time to regulate the ship's state. i) The transport ship unmoored and aligned with the No. 2 approach bridge at the front edge of the wharf. The crane was used to adjust the transport supports on the ship so that they were evenly distributed under the piles. The No. 1 lifting and sliding device (1) and the No. 2 lifting and sliding device (2) were depressurized so that the single pile fell on multiple transport supports. Then, the No. 1 lifting and sliding device (1), the No. 2 lifting and sliding device (2) and the sliding track (6) were hoisted to the wharf surface in sequence. Finally, the single pile was fixed by sea tying as required.

2. The method for sliding wind turbine pipe piles onto a ship according to claim 1, characterized in that: At least six transport supports are arranged in step i).

3. The method for sliding wind turbine pipe piles onto a ship according to claim 1, characterized in that: The center-to-center distance between the No. 1 shore sliding track (11) and the No. 2 shore sliding track (12) is 10m-12m.

4. The method for sliding wind turbine pipe piles onto a ship according to claim 1, characterized in that: In step b), the distance between the #2 lifting and sliding device (2) and the stern is 3m-5m.

5. The method for sliding wind turbine pipe piles onto a ship according to claim 1, characterized in that: The No. 1 lifting and sliding device (1), No. 2 lifting and sliding device (2), No. 3 lifting and sliding device (3) and No. 4 lifting and sliding device (4) all include a double door frame structure (101), a bearing beam (102), a jacking device (103) and a jacking limiting device (104). The bearing beam (102) is installed between the double door frame structures (101). The bearing beam (102) is lifted and lowered synchronously on the top crossbeam of the double door frame structure (101) by a lifting cylinder (105), a lifting top (106) and a steel strand (107). The jacking device (103) and the jacking limiting device (104) are located at the lower end of the base beam of the double door frame structure (101).

6. The method for sliding wind turbine pipe piles onto a ship according to claim 5, characterized in that: An angle sensor (108) is mounted on the base beam.

7. The method for sliding wind turbine pipe piles onto a ship according to claim 5, characterized in that: The double-door frame structure (101) is also equipped with a windproof iron wedge device, an anchor cable device, a weight indicator device and a height indicator device.

8. The method for sliding wind turbine pipe piles onto a ship according to claim 5, characterized in that: Two support points (109) are symmetrically provided on the bearing beam (102), and an adjustment seat is provided on each support point (109).

9. The method for sliding wind turbine pipe piles onto a ship according to claim 5, characterized in that: A transverse movement device is installed at the bottom of the No. 3 lifting sliding device (3) and the No. 4 lifting sliding device (4).

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