A logistics transfer gantry

Abstract

This utility model relates to the field of offshore wind power component transfer equipment, specifically to a logistics transfer gantry that solves the problem of uneven force distribution during the transfer and transportation of wind turbine monopiles. The logistics transfer gantry includes a main beam, defined as follows: the length direction of the main beam is X-axis, the vertical direction is Z-axis, and the direction perpendicular to X and Z is Y-axis. Support piers are installed at the bottom of both ends of the main beam in the X-axis direction. Right-angled triangular brackets are arranged on the upper surface of the main beam above each support pier. A plurality of primary threaded holes for adjusting the installation position of the triangular brackets are evenly distributed on the upper surface of the main beam. Two triangular brackets are symmetrically distributed and their inclined surfaces are opposite each other to form a support surface for supporting the monopile. Wedges for adapting to support the monopile are installed on the support surface. A plurality of secondary threaded holes for installing and adjusting the installation position of the wedges are evenly distributed on the support surface. This utility model is applied to the transfer of offshore wind turbine monopiles.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power component transfer equipment, specifically to a logistics transfer gantry. Background Technology

[0002] The transportation of large-diameter steel pipe monopiles for offshore wind power projects is a crucial step, requiring comprehensive consideration of the monopile's size, weight, sea conditions, and transportation costs. The foundation, as illustrated in the technical solution with application publication number CN 106013213A, presents a current offshore wind power pile foundation structure and proposes an offshore wind turbine pile foundation that can increase the capacity of a single turbine. This foundation includes a monopile, a basic connecting section, horizontal steel pipes, inclined steel pipes, and three or more vertical skirt piles. The monopile is vertically positioned, the basic connecting section is fixed to the top of the monopile, and the vertical skirt piles are evenly distributed around the monopile. The sidewalls of the vertical skirt piles are connected to the monopile via horizontal steel pipes, and the tops of the vertical skirt piles are connected to the basic connecting section via inclined steel pipes. The top of the basic connecting section is equipped with a first flange.

[0003] For monopiles, high verticality accuracy is required during installation, and under the conditions of large size and heavy weight, high protection is required during transportation and transport. Good support is needed, and deformation under stress should be avoided as much as possible. Most conventional monopiles have radial inconsistencies at both ends, and corresponding support structures need to be specially designed to avoid uneven stress at both ends during transportation. Utility Model Content

[0004] Therefore, this utility model provides a logistics transfer gantry that solves the problem of uneven force distribution during the transfer and transportation of wind power monopile.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A logistics transfer gantry includes a main beam, defined as follows: the length direction of the main beam is X-axis, the vertical direction is Z-axis, and the direction perpendicular to X and Z is Y-axis. Support piers are installed at the bottom of both ends of the main beam in the X-axis direction. A right-angled triangular bracket is provided on the upper end face of the main beam above each support pier. A plurality of primary threaded holes for adjusting the installation position of the triangular brackets are evenly distributed on the upper end face of the main beam. Two triangular brackets are symmetrically distributed and their inclined surfaces are arranged opposite each other to form a support surface for supporting a single pile. A wedge block for adapting to support the single pile is installed on the support surface. A plurality of secondary threaded holes for installing and adjusting the installation position of the wedge block are evenly distributed on the support surface.

[0007] Preferably, the wedge is placed at the X-direction end of the support surface, and in use, a single pile is supported by the joint contact between the support surface and the wedge.

[0008] Preferably, the wedge is mounted on the support surface, and the upper surface of the wedge is arc-shaped. In use, a single pile is supported by the upper surface of the wedge independently.

[0009] Preferably, the X-direction end surfaces of the main beam are provided with stop blocks to prevent displacement of the triangular bracket.

[0010] Preferably, each of the piers includes a base plate, a vertical plate and an inclined plate on the base plate, and a connecting horizontal plate between the vertical plate and the inclined plate. The vertical plate and the inclined plate are both trapezoidal structures. The inclined plates of the two piers are located on one side of the X-direction end of the main beam, and the Z-direction end of the vertical plate is provided with a triangular reinforcing plate for structural reinforcement.

[0011] Preferably, the triangular bracket is provided with a T-shaped structural plate extending along the Y direction.

[0012] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0013] This technical solution addresses the core pain points of transporting large-diameter monopiles for offshore wind power, namely "large size span, significant radial differences at both ends, and strict requirements for verticality accuracy." This invention utilizes a dynamically adaptable support system formed by double-sided triangular brackets and wedges: the main beam's X-axis supports at both ends provide foundation load-bearing capacity; primary threaded holes enable precise X-axis positioning of the triangular brackets, adapting to the axial support requirements of monopiles of different diameters; secondary threaded holes, in conjunction with wedges, allow for radial position fine-tuning, enabling the wedges and the inclined surfaces of the triangular brackets to jointly form a "double-sided enveloping" support surface. This design, through a modular adjustment mechanism of the threaded hole array, maximizes the contact surface and optimizes the fit during the transport of large-diameter monopiles, while effectively distributing the load through symmetrical double-sided support. This fundamentally solves the deformation risk caused by uneven stress on the monopile during transport, improving transport safety and economy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the support structure at the large-diameter end of the gantry in an embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the support structure at the small-diameter end of the gantry in an embodiment of this utility model.

[0016] Figure 3 This is a schematic diagram of the support structure of an embodiment of the present utility model.

[0017] Figure 4 This is a schematic diagram of the installation structure of the support pier according to an embodiment of the present utility model.

[0018] Reference numerals: 1. Main beam; 11. Primary threaded hole; 12. Stop block; 2. Support pier; 21. Base plate; 22. Vertical plate; 23. Inclined plate; 24. Connecting horizontal plate; 25. Triangular reinforcing plate; 3. Triangular bracket; 3a. Support surface; 31. Secondary threaded hole; 32. T-shaped structural plate; 4. Wedge block. Detailed Implementation

[0019] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] Example

[0021] refer to Figures 1 to 4 A logistics transfer gantry includes a main beam 1, defined as the length direction of the main beam 1 as the X direction, the vertical direction as the Z direction, and the direction perpendicular to X and Z as the Y direction. Support piers 2 are installed at the bottom of both ends of the main beam 1 in the X direction. Specifically, each support pier 2 includes a base plate 21, a vertical plate 22 and an inclined plate 23 standing on the base plate 21, and a connecting horizontal plate 24 standing between the vertical plate 22 and the inclined plate 23. The vertical plate 22 and the inclined plate 23 are both trapezoidal structures. The inclined plate 23 of both supports 2 is located on one side of the X-direction end of the main beam 1, and the Z-direction end of the vertical plate 22 is provided with a triangular reinforcing plate 25 for structural reinforcement. As the core load-bearing unit of the gantry, the structural rigidity of the support pier 2 directly affects the overall safety. This utility model adopts a composite support pier 2 structure of "trapezoidal vertical plate + triangular reinforcing plate 25": the vertical plate 22 and the inclined plate 23 form a stable triangular force-bearing system, and the trapezoidal structure expands the bearing area of ​​the bottom surface; the connecting horizontal plate 24 and the triangular reinforcing plate 25 form a three-dimensional reinforcement network, which effectively disperses the bending moment and shear force transmitted by the main beam 1. This design enables the support pier 2 to maintain a low stress level under the dynamic load of marine transportation, avoid local deformation, and ensure the structural stability of the gantry for long-term use;

[0022] Each of the above-mentioned piers 2 has a right-angled triangular bracket 3 on the upper end face of the main beam 1. The upper end face of the main beam 1 is evenly distributed with a number of primary threaded holes 11 for adjusting the installation position of the triangular bracket 3. Two triangular brackets 3 are symmetrically distributed and their inclined surfaces are opposite each other to form a support surface 3a for supporting a single pile. A wedge 4 for adapting to support the single pile is installed on the support surface. A number of secondary threaded holes 31 for installing and adjusting the installation position of the wedge 4 are evenly distributed on the support surface. This technical solution addresses the core pain points of transporting large-diameter monopiles for offshore wind power, namely "large size span, significant radial differences at both ends, and strict requirements for verticality accuracy." This utility model utilizes a dynamically adaptable support system formed by double-sided triangular brackets 3 and wedges 4: the main beam 1X provides foundation load-bearing to the two end supports 2; the primary threaded hole 11 achieves precise positioning of the triangular brackets 3X in the X direction, adapting to the axial support requirements of monopiles with different diameters; the secondary threaded hole 31, in conjunction with the wedges 4, allows for fine-tuning of the radial position, so that the wedges 4 and the inclined surfaces of the triangular brackets 3 together form a "double-sided enveloping" support surface 3a. This design, through a modular adjustment mechanism of the threaded hole array, ensures maximized contact surface and optimized fit during the transport of large-diameter monopiles, while effectively dispersing the load through symmetrical double-sided support, fundamentally solving the deformation risk caused by uneven stress on the monopiles during transport, and improving transport safety and economy. In this embodiment, the X-axis end surfaces of the main beam 1 are provided with stop blocks 12 to prevent displacement of the triangular bracket 3. Under the complex conditions of marine transportation, the triangular bracket 3 is prone to X-axis displacement due to vibration and impact, affecting the stability of the support. This utility model forms a mechanical limit by setting the stop blocks 12 at both ends of the main beam 1 in the X-axis direction, effectively restraining the axial movement of the triangular bracket 3. This design not only enhances the structure's resistance to disturbance, but also ensures that the triangular bracket 3 maintains its designed position throughout the entire transportation cycle through the dual guarantee mechanism of the stop blocks 12 and the threaded hole positioning, providing continuous and stable support force for the monopile and improving the reliability of the gantry system.

[0023] In this technical solution, different support structures are designed for the large-diameter end and the small-diameter end of the single pile:

[0024] Large-diameter end: The wedge 4 is arranged at the X-direction end of the support surface 3a. In use, the single pile is supported by the joint contact of the support surface 3a and the wedge 4. Addressing the characteristics of the large-diameter end of the single pile—large diameter, concentrated weight, and the need for additional end support—this invention uses small-sized wedges 4 arranged at the X-direction end of the support surface 3a to form a composite support structure of "foundation slope + end wedge 4". This design ensures uniform load distribution on the main support surface 3a while using the end wedges 4 to provide localized reinforcement support for the large-diameter end. This avoids stress concentration at the end of the single pile due to abrupt changes in diameter and achieves precise end positioning through the synergistic effect of the wedges 4 and the triangular bracket 3. It is particularly suitable for the transportation and protection needs of the ends of large-diameter single piles.

[0025] At the small-diameter end, the wedge 4 is mounted on the support surface. The upper surface of the wedge 4 is arc-shaped. In use, the single pile is independently supported by the upper surface of the wedge 4. Addressing the characteristics of the small-diameter end of the single pile—small diameter, large curvature, and the need for high-precision fit support—this invention employs an independent support structure with arc-shaped wedge 4. The arc-shaped surface design perfectly matches the outer contour of the small-diameter end, achieving high-precision "point-to-surface" fit. This structure can form a "differentiated support at both ends" combination with the large-diameter end support structure, satisfying the support requirements of different radial dimensions at both ends of the single pile. Furthermore, the independent load-bearing characteristics of the arc-shaped wedge 4 reduce local pressure at the small-diameter end, preventing surface damage during transportation and improving the overall protective performance of the single pile.

[0026] In this embodiment, the triangular bracket 3 and wedge block 4 are each composed of several steel plates forming a corresponding structure. Structurally, the triangular bracket 3 is provided with a T-shaped structural plate 32 extending along the Y direction. As a direct load-bearing component, the triangular bracket 3 needs to withstand the weight of a single pile and the impact force during transportation. This utility model enhances its cross-sectional moment of inertia by strengthening the T-shaped structural plate 32 extending along the Y direction, significantly improving its bending resistance. The T-shaped structure forms a mechanically optimized "flange-web" layout in the Y direction, effectively dispersing stress concentration, reducing elastic deformation during transportation, extending the service life of the triangular bracket 3, and ensuring that the support surface always maintains the designed geometric shape, maintaining high-precision support for the single pile.

[0027] This technical solution designs a dual-sided dynamic adaptive support system and adopts a differentiated support strategy at both ends. Combined with structural reinforcement and stability assurance at each location, it achieves high precision, high stability and low damage in monopile transportation, significantly improving transportation safety and economy.

[0028] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A logistics transfer gantry, characterized in that: Includes a main beam (1), the length direction of the main beam (1) is defined as the X direction, the vertical direction as the Z direction, and the direction perpendicular to X and Z as the Y direction. Support piers (2) are installed at the bottom of both ends of the main beam (1) in the X direction. The upper surface of the main beam (1) above each support pier (2) is provided with a right-angled triangular bracket (3). The upper surface of the main beam (1) is evenly distributed with a number of primary threaded holes (11) for adjusting the installation position of the triangular bracket (3). Two triangular brackets (3) are symmetrically distributed and their inclined surfaces are set opposite each other to form a support surface (3a) for supporting a single pile. A wedge (4) for adapting to support the single pile is installed on the support surface. A number of secondary threaded holes (31) for installing and adjusting the installation position of the wedge (4) are evenly distributed on the support surface.

2. The logistics transfer gantry according to claim 1, characterized in that: The wedge (4) is placed at the X-direction end of the support surface (3a). In use, a single pile is supported by the support surface (3a) and the wedge (4) working together.

3. The logistics transfer gantry according to claim 1, characterized in that: The wedge (4) is mounted on the support surface. The upper surface of the wedge (4) is arc-shaped. When in use, a single pile is supported by the upper surface of the wedge (4) independently.

4. The logistics transfer gantry according to claim 1 or 2 or 3, characterized in that: The X-direction end surfaces of the main beam (1) are provided with stop blocks (12) to prevent displacement of the triangular bracket (3).

5. The logistics transfer gantry according to claim 1 or 2 or 3, characterized in that: Each of the aforementioned piers (2) includes a base plate (21), a vertical plate (22) standing on the base plate (21), an inclined plate (23), and a connecting horizontal plate (24) standing between the vertical plate (22) and the inclined plate (23). The vertical plate (22) and the inclined plate (23) are both trapezoidal structures. The inclined plates (23) of the two piers (2) are both located on one side of the X-direction end of the main beam (1), and the Z-direction end of the vertical plate (22) is provided with a triangular reinforcing plate (25) for structural reinforcement.

6. The logistics transfer gantry according to claim 1 or 2 or 3, characterized in that: The triangular bracket (3) is provided with a T-shaped structural plate (32) extending along the Y direction.

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