A double-layer steel pipe pile transport and turning device with end supports

Abstract

This invention provides a double-layer steel pipe pile transport and turning device with end support, including a lower transport fixture for placing the lower layer steel pipe pile and an upper transport fixture for placing the upper layer steel pipe pile. It also includes an arc-shaped protective plate and a pile end turning support seat. The pile end turning support seat is fixedly installed on the deck of the transport ship and close to the turning ends of the lower and upper steel pipe piles. The arc-shaped protective plate is fixedly installed on the upper surface of the turning end of the lower steel pipe pile. The pile end turning support seat includes a lower support structure and an upper support structure. By setting the pile end turning support seat, effective control of the turning trajectory is achieved, enabling independent turning operations of the upper steel pipe pile. This overcomes the limitations of existing technologies that rely on the support of the lower steel pipe pile, thereby eliminating the risk of stress concentration causing surface depression of the lower steel pipe pile. Combined with the flexible support of the arc-shaped protective plate, it effectively solves the problem of easy slippage and collision of steel pipe piles under harsh sea conditions.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower technology, and in particular to a double-layer steel pipe pile transportation and turning device with end support. Background Technology

[0002] With the continuous development of offshore wind power in deep and remote waters, the four-pile jacket foundation has become the mainstream foundation type for offshore wind turbines. This foundation structure consists of four large steel pipe piles and the jacket body. The steel pipe piles, as the core load-bearing components, have seen a significant increase in size and weight with the development of deep and remote waters. Currently, the length of steel pipe piles for deep and remote offshore wind power exceeds 100 meters, and the weight of a single steel pipe pile can reach over 500 tons.

[0003] For offshore construction of large steel pipe piles, the current main construction process is "double-layer transportation + single floating crane with overturning protection device". The basic process is as follows: after the steel pipe piles are manufactured on land, they are transported to the construction area in a double-layer stacked manner by transport ships. Then, a single floating crane with a special overturning protection device lifts the steel pipe piles from the horizontal transportation state and flips them into a vertical state, and finally the pile driving operation is carried out.

[0004] The following problems still exist in practical applications of this solution: First, the upper steel pipe piles cannot be turned over independently. In existing technology, the transport equipment and the turning equipment are arranged separately and in rigid contact. In practical applications, if the upper turning equipment fails, the upper steel pipe piles need to be supported by the lower pile body to complete the turning. It is impossible to turn the upper steel pipe piles over independently, which can easily cause the pile surface to sink due to stress concentration, thereby affecting the efficiency of steel pipe pile driving construction.

[0005] Secondly, steel pipe piles are prone to slippage during the turning process. As the upper steel pipe piles need to use the lower piles as support points when turning over, under the combined effects of wind, waves and currents, the end contact points are easily affected by the ship's swaying, which can easily cause relative slippage, resulting in collisions between the upper and lower steel pipe piles. This can cause irreversible damage to the anti-corrosion layer of the piles and even lead to major construction safety accidents.

[0006] Third, the existing equipment is not adaptable to the harsh sea conditions in deep-sea areas. The design of the existing equipment did not fully consider the special characteristics of deep-sea construction, and it lacks effective constraints and buffer protection for the steel pipe piles during the turning process. Under conditions of large swells and short construction windows, the existing equipment cannot ensure that the steel pipe piles can smoothly and safely complete the attitude transformation, and cannot meet the stringent requirements for construction safety and efficiency in large-scale deep-sea wind power development. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a double-layer steel pipe pile transportation and turning device with end support, which can solve the problem that the turning of the upper layer steel pipe pile requires the help of the lower layer steel pipe pile, which may cause surface damage to the lower layer steel pipe pile.

[0008] Therefore, the present invention adopts the following technical solution: A double-layer steel pipe pile transport and turning device with end support includes a lower transport fixture for placing lower layer steel pipe piles and an upper transport fixture for placing upper layer steel pipe piles. The lower transport fixture is fixedly installed on the deck of a transport ship, and the upper transport fixture is installed between two adjacent lower layer steel pipe piles. It also includes an arc-shaped protective plate and a pile end turning support seat. The pile end turning support seat is fixedly installed on the deck of the transport ship and close to the turning ends of the lower and upper layer steel pipe piles. The arc-shaped protective plate is fixedly installed on the upper surface of the turning end of the lower layer steel pipe pile. The arc-shaped protective plate is used to protect the lower layer steel pipe pile from surface damage caused by the turning of the upper layer steel pipe pile. The pile end turning support seat includes a lower support structure and an upper support structure. The lower support structure is used to guide the turning of the lower layer steel pipe pile and limit and support the turning end of the lower layer steel pipe pile. The upper support structure is used to guide the turning of the upper layer steel pipe pile and limit and support the turning end of the upper layer steel pipe pile.

[0009] Based on the above technical solutions, the present invention may also employ the following further technical solutions, or combine these further technical solutions: The arc-shaped protective plate includes an arc-shaped steel plate, lifting lugs, and an arc-shaped rubber buffer pad. The arc of the arc-shaped steel plate matches the lower layer of steel pipe piles. The arc-shaped steel plate is attached to the upper surface of the lower layer of steel pipe piles. The arc-shaped rubber buffer pad is attached to and fixed to the upper surface of the arc-shaped steel plate. The lifting lugs are fixed to the two downward-curved sides of the arc-shaped steel plate. The steel wire passes through the lifting lugs and its lower end is fixed to the deck of the transport ship, thereby pressing the arc-shaped steel plate tightly against the surface of the lower layer of steel pipe piles.

[0010] The lower support structure is an L-shaped structure, consisting of a lower vertical stop structure and a lower horizontal support structure. The lower vertical stop structure is used to abut against the lower steel pipe pile when it is turned over and to limit its movement after it is turned over. The lower horizontal support structure is used to support the turned-over end of the lower steel pipe pile.

[0011] The upper surface of the lower transverse support structure is fixed with a lower pad block.

[0012] The pile end overturning support also includes a lower inclined brace, which is inclinedly supported on the side of the lower vertical stop structure away from the lower horizontal support structure. The lower end of the lower inclined brace is fixed to the deck of the transport ship, and the upper end of the lower inclined brace is welded to the back of the lower vertical stop structure.

[0013] The pile end turning support also includes a trapezoidal steel plate, and the bottom of the lower support structure is welded to the adjacent lower transport tooling through the trapezoidal steel plate.

[0014] The upper support structure is an L-shaped structure, consisting of an upper vertical stop structure and an upper horizontal support structure. The upper vertical stop structure is used to abut against the upper steel pipe pile during its overturning and to limit its movement after the pile has been overturned. The upper horizontal support structure supports the overturned end of the upper steel pipe pile. The upper support structure is welded between two adjacent lower transport fixtures.

[0015] The upper surface of the upper transverse support structure is fixed with an upper pad block.

[0016] The pile end overturning support also includes an upper inclined brace, which is inclinedly supported on the side of the upper vertical stop structure away from the upper horizontal support structure. The lower end of the lower inclined brace is fixed to the deck of the transport ship, and the upper end of the upper inclined brace is welded to the back of the upper vertical stop structure.

[0017] The lower transport fixture includes a rectangular bottom support structure. The upper ends of the bottom support structure are respectively welded with a left side support structure and a right side support structure with a triangular cross-section. The lower transport fixture forms an inverted trapezoidal placement space in the middle. The upper transport fixture includes a V-shaped side support structure. The side support structure is internally connected to a bottom horizontal support structure. The upper transport fixture forms an inverted trapezoidal placement space in the middle.

[0018] Compared with existing technologies, this invention has the following advantages and beneficial effects: Significantly improved safety and greatly increased construction efficiency: By setting up a pile-end turning support seat, effective control of the turning trajectory is achieved, enabling independent turning operations of the upper steel pipe piles. This breaks through the limitations of existing technologies that rely on the support of the lower steel pipe piles, thereby eliminating the risk of stress concentration causing surface depressions in the lower steel pipe piles and significantly improving construction efficiency. Simultaneously, the flexible support of the arc-shaped protective plate effectively solves the problem of easy slippage and collision of steel pipe piles in harsh sea conditions, greatly reducing construction safety risks; Significantly enhanced tooling utilization: The pile-end turning support seat also serves as… It has the dual functions of transporting and fixing steel pipe piles and bearing loads for turning over. It integrates transport support and turning over protection into the same overall frame, achieving a high degree of functional integration. One set of tooling can meet the full-process operation requirements of transporting and turning over double-layer steel pipe piles, avoiding the cumbersome operation of switching multiple sets of tooling and effectively reducing equipment investment costs. It has excellent adaptability to deep and deep sea: the overall load-bearing frame structure has good rigidity and stability, the arc-shaped protective plate can effectively protect the key parts of the pile body, and the pile end turning over support seat ensures that the turning over trajectory is controlled, fully meeting the engineering requirements of equipment reliability and adaptability to the operation window for large-scale offshore wind power development in deep and deep sea. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the lower-level transport fixture of the present invention.

[0020] Figure 2 This is a schematic diagram of the upper transport fixture of the present invention.

[0021] Figure 3 This is a schematic diagram of the arc-shaped protective plate of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 5 This is a schematic diagram of the transportation and installation of the present invention.

[0024] Figure 6 This is a schematic diagram of the steel pipe pile turning over according to the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote elements with the same or similar functions throughout. However, it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present invention.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0027] This invention provides a double-layer steel pipe pile transport and turning device with end support, comprising a lower-layer transport fixture 1 for placing the lower-layer steel pipe pile 51 and an upper-layer transport fixture 2 for placing the upper-layer steel pipe pile 52. The lower-layer transport fixture 1 is fixedly mounted on the deck of the transport ship, and the upper-layer transport fixture 2 is positioned between two adjacent lower-layer steel pipe piles 51. It also includes an arc-shaped protective plate 3 and a pile end turning support 4, which is fixedly mounted on the deck of the transport ship and close to the turning ends of the lower-layer and upper-layer steel pipe piles 51 and 52. The arc-shaped protective plate 3 is fixedly installed on the upper surface of the turning end of the lower steel pipe pile 51. The arc-shaped protective plate 3 is used to protect the lower steel pipe pile 51 from surface damage caused by the turning of the upper steel pipe pile 52. The pile end turning support 4 includes a lower support structure 42 and an upper support structure 43. The lower support structure 42 is used to guide the turning of the lower steel pipe pile 51 and limit and support the turning end of the lower steel pipe pile 51. The upper support structure 43 is used to guide the turning of the upper steel pipe pile 52 and limit and support the turning end of the upper steel pipe pile 52.

[0028] Combination Figures 4-6 By setting the pile end turning support seat 4, the load is distributed to the deck of the transport ship, so that the upper steel pipe pile does not need to rely on the support of the lower steel pipe pile during the turning process, and can complete the operation completely independently by relying only on the pile end turning support seat 4.

[0029] In this embodiment, the lower steel pipe pile 51 and the upper steel pipe pile 52 are 80,000 mm long, with an outer diameter of 4,500 mm and an inner diameter of 4,370 mm. Figure 5 As shown, the transportation arrangement includes five lower-level steel pipe piles 51 and three upper-level steel pipe piles 52. The turning ends of the five lower-level steel pipe piles 51 extend 2500mm beyond the turning ends of the three upper-level steel pipe piles 52. The position and number of the lower-level support structure 42 correspond one-to-one with the five lower-level steel pipe piles 51, and the position and number of the upper-level support structure 43 correspond one-to-one with the three upper-level steel pipe piles 52. The lower-level support structure 42 is arranged 2500mm away from the turning ends of the lower-level steel pipe piles 51, and the upper-level support structure 43 is arranged 2500mm away from the turning ends of the upper-level steel pipe piles 52.

[0030] The arc-shaped protective plate 3 includes an arc-shaped steel plate 31, lifting lugs 32, and an arc-shaped rubber buffer pad 33. The arc of the arc-shaped steel plate 31 matches the lower steel pipe pile 51. The arc-shaped steel plate 31 is attached to the upper surface of the lower steel pipe pile 51. The arc-shaped rubber buffer pad 33 is attached to and fixed to the upper surface of the arc-shaped steel plate 31 to cope with the risk of slippage when the upper steel pipe pile 52 overturns in sudden severe sea conditions, and to protect the lower steel pipe pile 51 from surface damage caused by the collision of the pile body when the upper steel pipe pile 52 overturns. Lifting lugs 32 are fixed on the two downward curved sides of the arc-shaped steel plate 31 respectively. The steel wire passes through the lifting lugs 32 and the lower end is fixed to the deck of the transport ship, so that the arc-shaped steel plate 31 is pressed tightly against the surface of the lower steel pipe pile 51.

[0031] In this embodiment, the arc-shaped steel plate 31 is formed by mechanically rolling a 20mm thick DH36 steel plate, with an internal diameter of 4500mm, a length of 5000mm, and an angle of 180°. The lifting lug 32 is formed by welding a 20mm thick DH36 steel plate to the arc-shaped plate, arranged symmetrically at 160° on both sides, with pre-drilled 40mm diameter installation holes. The arc-shaped rubber buffer pad 33 is formed by machine heating and softening a 40mm thick hard rubber pad, placed directly above the arc-shaped steel plate 31, completely covering the arc-shaped steel plate 31, thus protecting the upper steel pipe pile 52 from overturning. The arc-shaped protective plate 3 is arranged close to the overturning end of the lower steel pipe pile 51, which is close to the upper steel pipe pile 52.

[0032] The lower support structure 42 is an L-shaped structure, consisting of a lower vertical stop structure 421 and a lower horizontal support structure 422. The lower vertical stop structure 421 is used to abut against the lower steel pipe pile 51 when it is turned over and to limit the position after the lower steel pipe pile 51 is turned over. The lower horizontal support structure 422 is used to support the turned-over end of the lower steel pipe pile 51.

[0033] The lower layer pad 6 is fixed to the upper surface of the lower layer transverse support structure 422.

[0034] The pile end overturning support 4 also includes a lower inclined brace 44, which is inclinedly supported on the side of the lower vertical stop structure 421 away from the lower horizontal support structure 422. The lower end of the lower inclined brace 44 is fixed to the deck of the transport ship, and the upper end of the lower inclined brace 44 is welded to the back of the lower vertical stop structure 421.

[0035] The pile end turning support 4 also includes a trapezoidal steel plate 41, and the bottom of the lower support structure 42 is welded to the adjacent lower transport fixture 1 through the trapezoidal steel plate 41.

[0036] In this embodiment, the lower vertical stop structure 421 has a height of 1500mm and is formed by welding DH36 rectangular steel plates with a thickness of 20mm in both the horizontal and vertical directions. The bottom and sides of the lower horizontal support structure 422 are formed by welding DH36 fixing steel plates with a thickness of 20mm. After the lower vertical stop structure 421 and the lower horizontal support structure 422 are welded together, a DH36 trapezoidal steel plate 41 with a thickness of 20mm is welded together with the lower transport tool 1 to achieve the lower pad block 6 of the lower steel pipe pile 51 contacting the horizontal support structure 422 and the turning operation around the lower vertical stop structure 421.

[0037] The upper support structure 43 is an L-shaped structure, consisting of an upper vertical stop structure 431 and an upper horizontal support structure 432. The upper vertical stop structure 431 is used to abut against the upper steel pipe pile 52 when it is turned over and to limit the position after the upper steel pipe pile 52 is turned over. The upper horizontal support structure 432 is located at the turning end of the upper steel pipe pile 52. The upper support structure 43 is welded between two adjacent lower transport fixtures 1.

[0038] The upper surface of the upper transverse support structure 422 is fixed with an upper pad 7.

[0039] In this embodiment, both the lower pad 6 and the upper pad 7 are made of hardwood, which can meet the load-bearing strength requirements and provide flexible protection. The upper vertical stop structure 431 has a height of 6000mm, a width of 800mm, and a thickness of 400mm, and is formed by welding DH36 rectangular steel plates with a horizontal and vertical thickness of 20mm. The upper horizontal support structure 432 has a height of 4500mm, a width of 800mm, and a thickness of 1000mm, and is formed by welding DH36 rectangular steel plates with a horizontal, vertical, and top thickness of 20mm. After the upper vertical stop structure 431 and the upper horizontal support structure 432 are welded together, they are welded together with the side of the transport fixture 1 to achieve the contact between the upper steel pipe pile 52 and the upper pad 7 of the upper horizontal support structure 432, and to allow the pile to be turned around the upper vertical stop structure 431.

[0040] The lower vertical stop structure 421 and the upper vertical stop structure 431 restrict the movement of the steel pipe pile during the turning process, ensuring that the steel pipe pile turns around the stop structure.

[0041] The pile end overturning support 4 also includes an upper inclined brace 45, which is inclinedly supported on the side of the upper vertical stop structure 431 away from the upper horizontal support structure 432. The lower end of the upper inclined brace 45 is fixed to the deck of the transport ship, and the upper end of the upper inclined brace 45 is welded to the back of the upper vertical stop structure 431.

[0042] The lower diagonal brace 44 and the upper diagonal brace 45 are designed to increase the structure's resistance to overturning. Both are made of 294×200mm H-beams. The lower diagonal brace 44 has an angle of 50° with the deck, and the upper diagonal brace 45 has an angle of 60° with the deck.

[0043] The lower transport fixture 1 includes a rectangular bottom support structure 11. The upper two ends of the bottom support structure 11 are respectively welded with a left side support structure 12 and a right side support structure 13 with triangular cross sections. The lower transport fixture 1 forms an inverted trapezoidal placement space in the middle. The upper transport fixture 2 includes a V-shaped side support structure 21. The side support structure 21 is internally connected to a bottom horizontal support structure 22. The upper transport fixture 2 forms an inverted trapezoidal placement space in the middle.

[0044] like Figure 1 As shown, the bottom support structure 11, the left side support structure 12, and the right side support structure 13 of the lower transport fixture 1 are respectively composed of a middle steel plate and thickness-direction steel plates welded vertically to the periphery of the middle steel plate. Multiple reinforcing ribs 10 are also welded between the middle steel plate and the thickness-direction steel plates, with specific welding positions as shown in the figure. Figure 1 As shown, this increases load-bearing capacity and impact resistance.

[0045] In this embodiment, the lower transport fixture 1 has external dimensions of 4500mm × 400mm × 2000mm (length × width × height). The middle steel plate and the thickness-direction steel plate are both made of 20mm thick DH36 steel plate. The bottom support structure 11 is reinforced internally with 20mm thick reinforcing ribs 10 (DH36 steel plate) welded symmetrically at 500mm intervals to increase load-bearing capacity. The left side support structure 12 and the right side support structure 13 are reinforced internally with 20mm thick reinforcing ribs 10 (DH36 steel plate) welded along the inclined surface at the tangent point to the steel pipe pile to increase impact resistance. Figure 4 As shown, the two lower transport fixtures at both ends are reinforced with 294×200mm H-beams welded to the sides (at a 50° angle with the deck) to increase load-bearing capacity.

[0046] like Figure 2 As shown, the upper transport fixture 2 is provided with a double-layered stacked and welded side support structure 21 and a bottom horizontal support structure 22 in the thickness direction. The side support structure 21 and the bottom horizontal support structure 22 are respectively composed of an intermediate steel plate and a steel plate in the thickness direction welded vertically around the intermediate steel plate.

[0047] In this embodiment, both the side support structure 21 and the bottom horizontal support structure 22 are made of H-beams. The upper transport fixture 2 has a length of 2700mm on both sides and is formed by welding 294×200mm H-beams. The included angle on both sides is 110°. Inside, 294×200mm H-beam supports 2-3 are welded horizontally to increase the load-bearing capacity.

[0048] The construction method of the double-layer steel pipe pile transport and turning device with end support according to this embodiment includes the following steps: Step 1: Loading steel pipe piles onto the ship The required lower transport fixture 1 is pre-welded on the deck of the transport ship, and the required upper transport fixture 2 is prepared. The pile end turning support seat 4 is arranged. After the lower steel pipe pile 51 and the upper steel pipe pile 52 are manufactured, they are transported to the dock. After the lower steel pipe pile 51 is placed on the lower transport fixture 1 and loaded onto the ship, the upper transport fixture 2 is arranged between two adjacent lower steel pipe piles 51. Then the upper steel pipe pile 52 is placed on the upper transport fixture 2 and loaded onto the ship. The turning end of the lower steel pipe pile 51 is equipped with an arc-shaped protective plate 3. The steel wire passes through the lifting lug 32 and the lower end is fixed on the deck of the transport ship, so that the arc-shaped steel plate 31 is pressed tightly against the surface of the lower steel pipe pile 51. After the sea tying is completed, the transport is carried out.

[0049] Step 2: Turning over the upper steel pipe piles After the transport ship berths at the crane ship, the sea ties are removed. The crane ship lifts the pile flipper, clamps the top of the upper steel pipe pile 52, and slowly lifts it so that the flipped end of the upper steel pipe pile 52 lands on the upper pad 7. The upper vertical stop structure 431 abuts against the end face of the upper steel pipe pile 52 and restricts slippage. The upper steel pipe pile 52, with the upper vertical stop structure 431 as the center, slowly flips to a vertical state, and then is lifted and moved. This step is repeated until all the flipping operations of the upper steel pipe piles 52 are completed.

[0050] Step 3: Turning over the lower layer of steel pipe piles The arc-shaped protective plate 3 and the upper transport tool 2 are removed in sequence. The crane ship lifts the pile flipper, clamps the top of the lower steel pipe pile 51, and slowly lifts it so that the flipped end of the lower steel pipe pile 51 lands on the lower pad block 6. The lower vertical stop structure 421 abuts against the end face of the lower steel pipe pile 51 and restricts slippage. The lower steel pipe pile 51 is slowly flipped to a vertical state with the lower vertical stop structure 421 as the center. Then it is lifted and moved. This step is repeated until all the flipping operations of the lower steel pipe piles 51 are completed.

[0051] In step one, the loading plan is to arrange five lower-level steel pipe piles 51 on the lower level and three upper-level steel pipe piles 52 on the upper level.

[0052] In step two, if sudden severe sea conditions cause the upper steel pipe pile 52 to detach from the upper vertical stop structure 431, the arc-shaped protective plate 3 can effectively prevent slippage and collision from damaging the lower steel pipe pile 51 below. Based on the description and drawings of this invention, those skilled in the art can easily manufacture or use the double-layer steel pipe pile transport and turning device with end support of this invention, and can produce the positive effects described in this invention.

[0053] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "installed," "set," "equipped with," "connected," "linked," and "sleeve" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral construction; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two mechanisms, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In the description of this invention, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

[0055] Furthermore, in practicing the claims of this invention, those skilled in the art can understand and influence variations to the disclosed embodiments through a study of the drawings, the disclosure, and the appended claims. Additionally, in the claims and description, words such as "comprising" and "containing" do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications made in accordance with the present invention are covered by the scope of the claims of the present invention, and will not be listed here.

Claims

1. A double-layer steel pipe pile transport and turning device with end support, comprising a lower transport fixture (1) for placing the lower layer steel pipe piles (51) and an upper transport fixture (2) for placing the upper layer steel pipe piles (52), wherein the lower transport fixture (1) is fixedly installed on the deck of a transport ship, and the upper transport fixture (2) is installed between two adjacent lower layer steel pipe piles (51), characterized in that, It also includes an arc-shaped protective plate (3) and a pile end turning support seat (4). The pile end turning support seat (4) is fixedly installed on the deck of the transport ship and close to the turning ends of the lower steel pipe pile (51) and the upper steel pipe pile (52). The arc-shaped protective plate (3) is fixedly installed on the upper surface of the turning end of the lower steel pipe pile (51). The arc-shaped protective plate (3) is used to protect the lower steel pipe pile (51) from surface damage caused by the turning of the upper steel pipe pile (52). The pile end turning support seat (4) includes a lower support structure (42) and an upper support structure (43). The lower support structure (42) is used to guide the turning of the lower steel pipe pile (51) and limit and support the turning end of the lower steel pipe pile (51). The upper support structure (43) is used to guide the turning of the upper steel pipe pile (52) and limit and support the turning end of the upper steel pipe pile (52).

2. The double-layer steel pipe pile transport and turning device with end support as described in claim 1, characterized in that, The arc-shaped protective plate (3) includes an arc-shaped steel plate (31), lifting lugs (32), and an arc-shaped rubber buffer pad (33). The arc of the arc-shaped steel plate (31) matches the lower steel pipe pile (51). The arc-shaped steel plate (31) is attached to the upper surface of the lower steel pipe pile (51). The arc-shaped rubber buffer pad (33) is attached to and fixed to the upper surface of the arc-shaped steel plate (31). The lifting lugs (32) are fixed to the two downward curved sides of the arc-shaped steel plate (31). The steel wire passes through the lifting lugs (32) and its lower end is fixed to the deck of the transport ship, so that the arc-shaped steel plate (31) is pressed tightly against the surface of the lower steel pipe pile (51).

3. The double-layer steel pipe pile transport and turning device with end support as described in claim 1, characterized in that, The lower support structure (42) is an L-shaped structure, consisting of a lower vertical stop structure (421) and a lower horizontal support structure (422). The lower vertical stop structure (421) is used to abut against the lower steel pipe pile (51) when it is turned over and to limit the position after the lower steel pipe pile (51) is turned over. The lower horizontal support structure (422) is used to support the turned-over end of the lower steel pipe pile (51).

4. The double-layer steel pipe pile transport and turning device with end support as described in claim 3, characterized in that, The lower layer pad (6) is fixed on the upper surface of the lower layer transverse support structure (422).

5. A double-layer steel pipe pile transport and turning device with end support as described in claim 3, characterized in that, The pile end overturning support (4) also includes a lower inclined brace (44), which is inclinedly supported on the side of the lower vertical stop structure (421) away from the lower horizontal support structure (422). The lower end of the lower inclined brace (44) is fixed on the deck of the transport ship, and the upper end of the lower inclined brace (44) is welded to the back of the lower vertical stop structure (421).

6. A double-layer steel pipe pile transport and turning device with end support as described in claim 1, characterized in that, The pile end turning support (4) also includes a trapezoidal steel plate (41), and the bottom of the lower support structure (42) is welded to the adjacent lower transport fixture (1) through the trapezoidal steel plate (41).

7. A double-layer steel pipe pile transport and turning device with end support as described in claim 1, characterized in that, The upper support structure (43) is an L-shaped structure, consisting of an upper vertical stop structure (431) and an upper horizontal support structure (432). The upper vertical stop structure (431) is used to abut against the upper steel pipe pile (52) when it is turned over and to limit the position after the upper steel pipe pile (52) is turned over. The upper horizontal support structure (432) is located at the turning end of the upper steel pipe pile (52). The upper support structure (43) is welded between two adjacent lower transport fixtures (1).

8. A double-layer steel pipe pile transport and turning device with end support as described in claim 6, characterized in that, The upper surface of the upper transverse support structure (422) is fixed with an upper pad block (7).

9. A double-layer steel pipe pile transport and turning device with end support as described in claim 6, characterized in that, The pile end overturning support (4) also includes an upper inclined brace (45), which is inclinedly supported on the side of the upper vertical stop structure (431) away from the upper horizontal support structure (432). The lower end of the lower inclined brace (44) is fixed on the deck of the transport ship, and the upper end of the upper inclined brace (45) is welded to the back of the upper vertical stop structure (431).

10. A double-layer steel pipe pile transport and turning device with end support as described in claim 1, characterized in that, The lower transport fixture (1) includes a rectangular bottom support structure (11), and the upper two ends of the bottom support structure (11) are respectively welded with a left side support structure (12) and a right side support structure (13) with a triangular cross section. The lower transport fixture (1) forms an inverted trapezoidal placement space in the middle. The upper transport fixture (2) includes a V-shaped side support structure (21), and the side support structure (21) is internally connected to a bottom horizontal support structure (22). The upper transport fixture (2) forms an inverted trapezoidal placement space in the middle.

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