Double-beam pile turning process

Abstract

The double-beam pile turning-over process is characterized in that two main hoisting steel wires on two hoisting beams are respectively sleeved to two lifting lugs of a steel pipe pile, a lock of a tail sliding steel wire connected through a shackle mechanism of a hook one hooks the tail of the steel pipe pile, the hook one and a hook two are lifted to drive the steel pipe pile to be separated from a transport ship, and the transport ship departs; at this time, the hook one and the hook two are lowered, when the hoisting weight of the hook one and the hook two is obviously reduced, the lowering of the hook two is temporarily stopped, the hook one continues to be lowered until the tail sliding steel wire is in a slack state and is separated through the shackle mechanism, then the hook one is lifted until the hoisting weight of the hook one and the hook two is close, the hook one and the hook two start to be synchronously lifted, and the steel pipe pile slowly realizes the pile turning-over operation around the lifting lugs in the process of synchronous lifting of the hook one and the hook two. The double-beam pile turning-over process is convenient, safe and low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to a piling turning process, in particular to a piling turning process based on two lifting beams for offshore wind power steel pipe piles, belonging to the technical field of offshore wind power construction. BACKGROUND

[0002] At present, single-hook or double-hook methods are generally used for piling turning operation of steel pipe piles in the process of offshore wind power construction, but the stability of the above-mentioned single-hook or double-hook is poor, and the construction difficulty is high for large-diameter and large-tonnage steel pipe piles. Therefore, some enterprises have developed a "offshore large-diameter steel pipe pile turning equipment and its piling turning construction method" as disclosed in Chinese patent CN202010634288.3, which realizes the piling turning operation of the steel pipe pile by installing a piling turning equipment on the ship in cooperation with the crane, but the above-mentioned method needs to modify the transport ship, which increases the construction cost, and the power requirement of the piling turning equipment is extremely high for large-tonnage and large-length steel pipe piles, and since the piling turning operation is carried out by the piling turning equipment, the whole piling turning process is operated on the ship body, and as the steel pipe pile is turned over, the overall center of gravity will be offset, which needs to be dynamically balanced by ballast water, so the overall implementation difficulty is high, and there is a certain safety risk. Therefore, a new process is needed to solve the above-mentioned problems. SUMMARY

[0003] The purpose of the present application is to overcome the above-mentioned shortcomings, and to provide a double-lifting-beam piling turning process which is convenient, safe and low in cost.

[0004] The purpose of the present application is to overcome the above-mentioned shortcomings, and to provide a double-lifting-beam piling turning process which is convenient, safe and low in cost.

[0005] A double-lifting-beam piling turning process, the process is:

[0006] Step one, prepare the lifting rigging and check its integrity;

[0007] Step two, hang the lifting beam one and the lifting beam two on the hook assembly one and the hook assembly two of the crane respectively, and then connect the tail rope through the shackle mechanism to the hook assembly one;

[0008] Then, rotate the crane above the bottom of the steel pipe pile, and the flat mouth hook connected by the tail rope is clamped on the bottom of the steel pipe pile; at the same time, the two main lifting steel wires one at both ends of the lifting beam one are connected to the two lifting lugs on both sides of the steel pipe pile respectively;

[0009] After the connection is completed, rotate the crane to the right and keep the main lifting steel wire one of the lifting beam one on the hook assembly one in a relaxed state, rotate the crane to the position where the hook assembly two is directly above the lifting lug, then lower the hook assembly two, connect the two main lifting steel wires two at both ends of the lifting beam two to the two lifting lugs on both sides of the steel pipe pile respectively, and realize the initial state of lifting;

[0010] Step three, lift the hook assembly one and hook assembly two, so that the tail rope on the hook assembly one, and the main hoisting wire one and the main hoisting wire two on the hoisting beam one and the hoisting beam two are all tightened, and then slowly lift the hook assembly one and the hook assembly two at the same time, find the center of gravity of the steel pipe pile by the crane boom compensation, and control the crane to slowly lift, while paying attention to the lifting angle of the steel pipe pile during the lifting process, adjust the height of the hook assembly one and the hook assembly two to ensure that the foundation pile is basically horizontally lifted, and after the steel pipe pile rises to a certain distance away from the bed frame on the transport ship, stop lifting the hook assembly one and the hook assembly two, and inform the transport ship to leave;

[0011] In this step, attention should be paid to the ballast of the transport ship. After the transport ship is docked at the crane ship, the construction unit and the transport ship determine the ballast implementation method. Before the first steel pipe pile is lifted, water is added to the corresponding side cabin in advance. During the process of lifting the steel pipe pile, the hook starts to bear the force until the steel pipe pile is separated from the bed frame, and the ballast tank continues to add water to adjust the ballast, so that the left and right sides of the transport ship are within the safe height difference range; when the second steel pipe pile is lifted, the original ballast water is discharged according to the pre-prepared plan, that is, the left and right sides of the transport ship are within the safe height difference range;

[0012] Step four, the crane lowers the hook assembly one and the hook assembly two at the same time, and when the weight of the hook assembly one and the hook assembly two is obviously reduced, it indicates that the pile body has reached the mud surface at this time. At this time, the lowering of the hook assembly two is stopped, and the hook assembly one continues to be lowered until the tail rope is in a relaxed state, and then the unhooking mechanism is started to realize the unhooking action of the tail rope and the hook assembly one. At this time, the tail rope is connected to the lifting vice hook, and the flat mouth hook will slide obliquely downward to separate from the steel pipe pile under the action of gravity;

[0013] Then lift the hook assembly one again until the hoisting weight of the hook assembly one and the hook assembly two is close, and then lift the hook assembly one and the hook assembly two at the same time. With the lifting of the hook assembly one and the hook assembly two, the steel pipe pile realizes the overturning action around the lifting lug; and in this process, the tail rope with the flat mouth hook is lifted to the hoisting beam one and the hoisting beam two through the lifting vice hook to prevent collision;

[0014] The connection of the main hoisting steel wire rope one and the main hoisting steel wire rope two with the lifting lug is realized through hoisting transition pieces; the hoisting transition piece is provided with two pieces, the hoisting transition piece comprises clamping plates arranged in parallel in front and back, and a pin shaft is connected between the clamping plates, the pin shaft is provided with three roots constituting a triangular stable structure; the main hoisting steel wire rope one is provided with two roots, and the two roots of the main hoisting steel wire rope one are respectively located at two ends of the hoisting beam one; similarly, the main hoisting steel wire rope two is provided with two roots, and the two roots of the main hoisting steel wire rope two are respectively located at two ends of the hoisting beam two; the two roots of the main hoisting steel wire rope one are respectively connected to the first pin shaft of the two hoisting transition pieces, the two roots of the main hoisting steel wire rope two are respectively connected to the second pin shaft of the two hoisting transition pieces, and the third pin shaft of the two hoisting transition pieces is respectively connected to the two lifting lugs through the connecting steel wire rope.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The present application realizes the turning pile operation of the steel pipe pile through two hoisting beams controlled by two groups of hooks, the overall required equipment is simple, the whole turning pile operation is carried out away from the transport ship, and part of the gravity of the steel pipe pile is borne by the sea mud, so that the power requirement in the turning pile process is low and the safety is more reliable. And compared with the hook mode, the stability of the beam mode is better, the double-beam design mode is used, which not only further improves the stability, but also is more suitable for the unhooking operation of the flat mouth hook, and simplifies the operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a hoisting state schematic view of a double-beam turning pile process of the present application.

[0018] Figure 2 It is an installation and cooperation schematic view between the flat mouth hook and the steel pipe pile in the present application.

[0019] Figure 3 It is a structure schematic view of the structure of the hoisting transition piece in the present application.

[0020] Figure 4 It is a sectional view of the hoisting transition piece in the present application.

[0021] Figure 5 It is a state schematic view after the transport ship leaves the berth in the present application.

[0022] Figure 6 It is a state schematic view when the tailing steel wire rope is separated from the hook assembly one in the present application.

[0023] Figure 7 And Figure 8 It is a state schematic view in the turning pile process.

[0024] Among them:

[0025] Hook assembly one 1, hook assembly two 2;

[0026] 3. Shackle mechanism; 4. Tail-running wire rope; 5. Main lifting wire rope one; 6. Main lifting wire rope two; 7. Lifting beam one; 8. Lifting beam two; 9. Flat-mouth hook; 10. Lifting transition piece.

[0027] Clamping plate 10.1, pin 10.2;

[0028] Steel pipe pile 101, lifting lug 102. Detailed Implementation Example 1:

[0029] See Figure 1 The present invention relates to a double-beam pile-turning process, the process steps of which are as follows:

[0030] Step 1: Prepare the lifting slings and check their integrity;

[0031] Step 2: Hang the lifting beam 7 and the lifting beam 8 on the crane's hook assembly 1 (i.e., hook 1) and hook assembly 2 (i.e., hook 2) respectively, and then connect the tail wire rope 4 to the hook assembly 1 through the shackle mechanism 3 (the shackle mechanism 3 is a hydraulic automatic shackle mechanism);

[0032] Then, the crane is rotated to a position above the bottom of the steel pipe pile 101, and the flat hook 9 connected to the tail wire rope 4 is engaged with the bottom of the steel pipe pile 101 (e.g., Figure 2 (as shown); At the same time, the two main lifting wire ropes 5 at both ends of the lifting beam 7 are respectively connected to the two lifting lugs 102 on both sides of the steel pipe pile 101.

[0033] After connection, rotate the crane to the right while keeping the main lifting wire rope 5 of the lifting beam 7 on the hook assembly 1 slack. Rotate the crane until the hook assembly 2 is directly above the lifting lug 102. Then lower the hook assembly 2 and connect the two main lifting wire ropes 6 at both ends of the lifting beam 8 to the two lifting lugs 102 on both sides of the steel pipe pile 101, thereby achieving the following: Figure 1 The initial lifting state is shown;

[0034] Step 3: Lift hook assembly 1 and hook assembly 2, tightening the tail wire rope 4 on hook assembly 1, and the main lifting wire ropes 5 and 6 on lifting beams 7 and 8. Then, simultaneously and slowly lift hook assembly 1 and hook assembly 2, using crane boom compensation to find the center of gravity of the steel pipe pile 101, and controlling the crane to lift slowly. During the lifting process, carefully observe the lifting angle of the steel pipe pile 101, and fine-tune the height of hook assembly 1 and hook assembly 2 to ensure the foundation pile is lifted in a basically horizontal position. Once the steel pipe pile 101 has risen to a certain distance completely detached from the jig on the transport ship, stop lifting hook assembly 1 and hook assembly 2, and notify the transport ship to leave berth. Figure 5 As shown;

[0035] In this step, the following points should be noted regarding ballast adjustment on the transport ship (when one ship is carrying two steel pipe piles 101). After the transport ship docks at the crane vessel, the construction unit and the transport ship should determine the ballast implementation method. Before lifting the first steel pipe pile 101, water should be added to the corresponding side compartment of the ship. During the lifting of steel pipe pile 101, from the moment the hook begins to bear force until the steel pipe pile 101 is detached from the jig, water should be continuously added to the ballast tank to ensure that the height difference between the port and starboard sides of the transport ship remains within a safe range. When lifting the second steel pipe pile 101, the original ballast water should be discharged according to the pre-established plan, ensuring that the height difference between the port and starboard sides of the transport ship remains within a safe range.

[0036] Step 4: Simultaneously lower hook assembly 1 and hook assembly 2. When the weight on hook assembly 1 and hook assembly 2 decreases significantly, it indicates that the pile body has reached the mud surface. At this point, pause lowering hook assembly 2 and continue lowering hook assembly 1 until the tailing wire rope 4 becomes slack. Then, activate the shackle mechanism 3 to disengage the tailing wire rope 4 from hook assembly 1. At this time, the tailing wire rope 4 is connected to the lifting auxiliary hook, and the flat hook 9 will slide obliquely downwards and detach from the connection of the steel pipe pile 101 under the action of gravity. Figure 6 As shown;

[0037] Next, lift hook assembly 1 until the lifting weights of hook assembly 1 and hook assembly 2 are close, then lift hook assembly 1 and hook assembly 2 simultaneously. Figure 7 As shown, with the lifting of hook assembly 1 and hook assembly 2, the steel pipe pile 101 rotates around the lifting lug 102 until it reaches the desired position. Figure 8 As shown. During this process, the tailing wire rope 4, along with the flat-mouth hook 9, is lifted onto the lifting beam via the lifting auxiliary hook to prevent collision; Example 2:

[0038] The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the connection between the main lifting wire rope 5 and the main lifting wire rope 6 and the lifting lug 102 is achieved through the lifting transition piece 10; specifically:

[0039] The lifting transition piece 10 is provided in two parts. The lifting transition piece 10 includes a clamping plate 10.1 arranged in parallel front and rear, and a pin 10.2 is connected between the clamping plates 10.1. The pin 10.2 is provided with three pins (first pin, second pin, and third pin) to form a triangular stable structure.

[0040] There are two main lifting wire ropes 5, and the two main lifting wire ropes 5 are located at both ends of the lifting beam 7; similarly, there are two main lifting wire ropes 6, and the two main lifting wire ropes 6 are located at both ends of the lifting beam 8.

[0041] Two main lifting wire ropes 5 are respectively connected to the first pins of the two lifting transition pieces 10, and two main lifting wire ropes 6 are respectively connected to the second pins of the two lifting transition pieces 10. The third pins of the two lifting transition pieces 10 are respectively connected to the two lifting lugs 102 through connecting wire ropes.

[0042] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A double-beam pile-turning process, characterized in that: The process is as follows: Step 1: Prepare the lifting slings and check their integrity; Step 2: Hang the first lifting beam (7) and the second lifting beam (8) on the first hook assembly (1) and the second hook assembly (2) of the crane respectively, and then connect the tail wire rope (4) to the first hook assembly (1) through the shackle mechanism (3); Then, the crane is rotated to the bottom of the steel pipe pile (101), and the flat hook (9) connected to the tail wire rope (4) is engaged on the bottom of the steel pipe pile (101); at the same time, the two main lifting wire ropes (5) at both ends of the lifting beam (7) are connected to the two lifting lugs (102) on both sides of the steel pipe pile (101). After the connection is completed, rotate the crane to the right and keep the main lifting wire rope 1 (5) of the lifting beam 1 (7) on the hook assembly 1 (1) in a slack state. Rotate the crane until the hook assembly 2 (2) is directly above the lifting lug (102). Then lower the hook assembly 2 (2) and connect the two main lifting wire ropes 2 (6) at both ends of the lifting beam 2 (8) to the two lifting lugs (102) on both sides of the steel pipe pile (101) to achieve the initial lifting state. Step 3: Lift hook assembly 1 (1) and hook assembly 2 (2) to tighten the tail wire rope (4) on hook assembly 1 (1), and the main lifting wire rope 1 (5) and main lifting wire rope 2 (6) on lifting beam 1 (7) and lifting beam 2 (8). Then lift hook assembly 1 (1) and hook assembly 2 (2) slowly at the same time. Find the center of gravity of the steel pipe pile (101) through crane boom compensation and control the crane to lift slowly. At the same time, observe the lifting angle of the steel pipe pile (101) during the lifting process. Adjust the height of hook assembly 1 (1) and hook assembly 2 (2) to ensure that the foundation pile is basically horizontally lifted. After the steel pipe pile (101) rises to a certain distance from the jig on the transport ship, stop lifting hook assembly 1 (1) and hook assembly 2 (2) and notify the transport ship to leave the berth. In this step, attention should be paid to the ballast water displacement and load adjustment of the transport ship. After the transport ship docks at the crane ship, the construction unit and the transport ship shall determine the ballast implementation method. Before the first steel pipe pile (101) is lifted, water shall be added to the corresponding side compartment of the ship in advance. When the steel pipe pile (101) is lifted, the hook begins to bear force until the steel pipe pile (101) is separated from the jig. During this process, water shall be continuously added to the ballast tank to adjust the load, so as to ensure that the height difference between the port and starboard sides of the transport ship is within the safe height difference range. When the second steel pipe pile (101) is lifted, the original ballast water shall be discharged according to the pre-established plan, that is, it is necessary to ensure that the height difference between the port and starboard sides of the transport ship is within the safe height difference range. Step 4: The crane lowers hook assembly 1 (1) and hook assembly 2 (2) at the same time. When the weight on hook assembly 1 (1) and hook assembly 2 (2) decreases significantly, it indicates that the pile body has reached the mud surface. At this time, the lowering of hook assembly 2 (2) is paused, and hook assembly 1 (1) is lowered until the tail wire rope (4) becomes slack. Then, the shackle mechanism (3) is activated to realize the unhooking action of tail wire rope (4) from hook assembly 1 (1). At this time, tail wire rope (4) is connected to the lifting auxiliary hook, and the flat hook (9) will slide obliquely downwards and detach from the connection of the steel pipe pile (101) under the action of gravity. Next, lift hook assembly one (1) until the weights of hook assembly one (1) and hook assembly two (2) are close. Then lift hook assembly one (1) and hook assembly two (2) simultaneously. As hook assembly one (1) and hook assembly two (2) are lifted, the steel pipe pile (101) rotates around the lifting lug (102). During this process, the tail wire rope (4) with the flat hook (9) is lifted by the lifting auxiliary hook to the lifting beam one (7) and lifting beam two (8) to prevent collision. The main lifting wire rope one (5) and the main lifting wire rope two (6) are connected to the lifting lug (102) through the lifting transition piece (10); the lifting transition piece (10) is provided in two parts, the lifting transition piece (10) includes a clamp plate (10.1) arranged in parallel front and rear, and a pin shaft (10.2) is connected between the clamp plate (10.1), and the pin shaft (10.2) is provided with three pins to form a triangular stable structure; the main lifting wire rope one (5) is provided in two parts, and the two main lifting wire ropes one (5) are respectively Located at both ends of the lifting beam (7); similarly, there are two main lifting wire ropes (6), and the two main lifting wire ropes (6) are located at both ends of the lifting beam (8); the two main lifting wire ropes (5) are respectively connected to the first pin of the two lifting transition pieces (10), the two main lifting wire ropes (6) are respectively connected to the second pin of the two lifting transition pieces (10), and the third pin of the two lifting transition pieces (10) are respectively connected to the two lifting lugs (102) by connecting wire ropes.

Images