Pile barge pile holding device with stable load bearing support

Abstract

This invention discloses a pile-holding device for a pile-driving vessel with stable load-bearing support, relating to the field of pile-holding technology. It includes a pile-holding device, an opening and closing arm assembly, a boom cylinder, an arched positioning connecting plate, and an arc-shaped bearing plate. It also includes a limiting and bearing mechanism located at the rear end of the pile-holding device, which includes at least one support bracket assembly. The front end of the support bracket assembly is hinged to both the boom cylinder and the arc-shaped bearing plate, serving to support the pile-holding device and provide limiting and load distribution. The support bracket assembly includes a rear-end square frame-type bearing bracket assembly and a front-end main support bracket assembly. The front-end main support bracket assembly has a central main support plate and multiple layers of transverse cantilever plates, on which first and second hinge parts are arranged in a staggered manner. This invention integrates the hinge points of the boom cylinder and the arc-shaped bearing plate onto the same high-rigidity bracket, achieving load convergence, stress distribution, and physical limiting, significantly improving the overall rigidity, stability, and safety of the pile-holding device, reducing the strength requirements of the hull, and adapting to harsh sea conditions.

Description

Technical Field

[0001] This invention relates to the field of marine pile foundation construction equipment technology, and more specifically, to a pile-holding device for a pile-driving vessel, particularly a pile-holding device for a pile-driving vessel with stable load-bearing support. Background Technology

[0002] In offshore wind farm construction, cross-sea bridges, and other marine engineering projects, piling vessels are key operational platforms for pile foundation construction. The pile gripper, as the core component of the piling vessel, functions to provide precise guidance, stable clamping, and effective lateral support for the pipe piles during the placement and driving process, ensuring the verticality and positional accuracy of the piles.

[0003] In existing technologies, the structure of a pile gripper typically includes a pile-gripping opening and closing mechanism, such as a boom and a forearm, hinged to the hull or pile frame, and a hydraulic cylinder that drives the mechanism. For example, Chinese patent CN218540680U discloses a pile-gripping device for a piling vessel, which uses a boom rotation drive mechanism and a forearm rotation drive mechanism to drive the boom and forearm to open and close respectively, and a pin fixing part is provided at the front end of the forearm to achieve clamping and locking. This solution improves the stability of the gripper to a certain extent.

[0004] However, after long-term practice and in-depth research, those skilled in the art have found that existing pile-holding devices still have the following significant defects and shortcomings in structural design and force mechanism: Firstly, in existing technologies, the load-bearing and limiting functions are separated, resulting in poor structural stability. The hinge points of the boom cylinder and the load-bearing supports of the clamp, such as the connection points between the arc-shaped load-bearing plate and the hull, are usually set independently. This separated structure leads to a situation where, during piling operations, especially when the pipe pile is subjected to lateral surge impacts or ground tilt resistance, huge lateral loads are transmitted to their respective hinge points through the clamp and cylinder. Due to the lack of a unified, high-strength integrated load-bearing platform, these dispersed hinge points are prone to slight relative displacements or deformations, resulting in a decrease in the overall rigidity of the pile clamp and consequently affecting the guiding accuracy of the pipe pile.

[0005] Secondly, stress concentration at the hydraulic cylinder hinge poses a safety hazard. As the core component driving the opening and closing of the boom and bearing the clamping reaction force, the boom cylinder's hinge needs to withstand high-frequency alternating loads. In existing base-type or simple ear-mounted installation structures, the thrust of the hydraulic cylinder and the resistance of the boom are often not on an ideal force transmission path, easily generating huge bending moments and stress concentrations at the root of the hinge. Under long-term operation, fatigue cracks are prone to appear in this area, posing a significant safety hazard of structural failure.

[0006] Furthermore, existing technologies lack effective spatial restraint mechanisms, resulting in a high risk of overtravel. In adverse sea conditions or due to operational errors, the boom may exceed its designed travel range during opening or closing due to inertia or external forces. Existing technologies generally lack physical restraint structures for critical moving components such as the boom cylinder and the curved support plate. Overtravel can lead to bent cylinder piston rods, torn articulated lugs, or ruptured hydraulic lines, causing equipment damage and operational interruptions.

[0007] Furthermore, the lack of a proper load transfer path places high demands on the hull and piling frame. In existing technologies, the enormous bending moment and shear force generated during piling operation are directly transferred to the hull or piling frame through dispersed hinge points. This point-like concentrated load requires the hull or piling frame to have extremely high local structural strength, which not only increases the difficulty and cost of hull design but also limits the upgrading and application of piling devices on older ships.

[0008] Therefore, how to design a new type of pile-holding device for pile driving vessels that can provide an integrated, high-rigidity, stable bearing and limiting platform for the boom cylinder and load-bearing components, so as to optimize the load transmission path, disperse stress concentration, and provide precise spatial limiting, thereby significantly improving the stability, safety and service life of the overall structure of the pile holder, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] The problem this invention aims to solve is to overcome the technical defects of existing pile-driving vessel pile-holding devices, such as poor overall structural rigidity due to the separation of load-bearing and limiting functions, stress concentration at the hydraulic cylinder hinge leading to fatigue cracks, lack of physical limiting causing overtravel accidents, and unreasonable load transfer paths placing excessively high local strength requirements on the hull or pile frame. The invention provides a pile-driving vessel pile-holding device that provides an integrated, high-rigidity, stable load-bearing and limiting platform for the boom cylinder and the arc-shaped bearing plate, thereby optimizing load transfer, dispersing stress concentration, and achieving precise spatial limiting, thus providing stable load-bearing support.

[0010] To address the aforementioned problems, this invention provides a piling vessel with stable load-bearing support, comprising a piling gripper, an opening and closing arm assembly for clamping the pile, a boom cylinder for driving the opening and closing arm assembly, an arched positioning connecting plate hinged to the boom cylinder, and an arc-shaped bearing plate fixedly connected to the arched positioning connecting plate. It also includes a limiting bearing mechanism located at the rear end of the piling gripper. The limiting bearing mechanism includes at least one support bracket assembly, the front end of which is hinged to both the boom cylinder and the arc-shaped bearing plate. This support bracket assembly supports the piling gripper and provides limiting and load-bearing support to the boom cylinder and the arc-shaped bearing plate during the gripping and opening process of the piling gripper, providing spatial limiting and load distribution functions during piling operations.

[0011] Preferably, the support bracket assembly includes: a rear-end bearing bracket assembly, which has a square or rectangular frame structure and a certain thickness along the direction perpendicular to the pile gripping plane; and a transversely extending front-end main support bracket assembly, which is fixedly connected to or integrally formed on the front-end face of the rear-end bearing bracket assembly; the front-end main support bracket assembly includes a vertically extending central main support plate and at least two layers of transverse cantilever plates vertically connected to the central main support plate, the plane of the central main support plate being parallel to the swing plane of the pile gripper; in the front-end region of the transverse cantilever plates, a first hinge portion for hinged to the boom cylinder and a second hinge portion for hinged to the arc-shaped bearing plate are provided. By setting the support bracket assembly as a three-dimensional frame structure combining the rear-end bearing bracket assembly and the front-end main support bracket assembly, an integrated high-rigidity bearing platform is formed. The rear-end bearing support assembly provides a thick, bending and torsion resistant base, while the front-end main support support assembly centrally bears the loads of the boom cylinder and the arc-shaped bearing plate. The synergistic effect of the two significantly improves the overall structural rigidity and deformation resistance of the pile gripper, effectively eliminating the problem of reduced guiding accuracy caused by relative displacement of the dispersed hinge points in the existing technology.

[0012] Preferably, the rear-end load-bearing support assembly comprises a square frame welded together from multiple longitudinal and transverse beams, with intersecting diagonal reinforcing ribs arranged on the interior and sides of the square frame. The use of a square frame formed by welding multiple longitudinal and transverse beams, along with intersecting diagonal reinforcing ribs on the interior and sides, significantly enhances the torsional and compressive resistance of the rear-end load-bearing support assembly while providing a large load-bearing area. This allows for the dispersion and homogenization of large, concentrated point loads from the front end, transferring them to the hull or pile frame as surface loads or large-scale multi-point loads. This significantly reduces the requirements for the local structural strength of the hull, facilitates the retrofitting and upgrading of older vessels, and improves the product's versatility.

[0013] Preferably, the first hinge portion and the second hinge portion are staggered in the height direction and the front-rear direction of the transverse cantilever plate. Staggering the hinge points of the boom cylinder and the arc-shaped bearing plate vertically and horizontally avoids spatial interference between the two moving parts, making the boom opening and closing action smoother. Furthermore, this staggering optimizes the force transmission path, allowing the thrust of the boom cylinder and the resistance of the boom to be transmitted to the support bracket assembly along a more reasonable spatial force line, effectively reducing the bending moment and stress concentration at the root of the hinge lug, and extending the service life of key hinge components.

[0014] Preferably, the front edge of the central main support plate has a curved or inclined profile extending towards the pile driver; the first hinge portion includes a first hinge lug protruding from the plate surface of the transverse cantilever plate to one or both sides, the first hinge lug having a first hinge hole for the boom cylinder hinge shaft to pass through, and a first locking pin passing through the first hinge hole to connect the boom cylinder hinge shaft to the first hinge hole; the second hinge portion includes a second hinge lug protruding from the plate surface of the transverse cantilever plate to one or both sides, the second hinge lug having a second hinge hole for the arc-shaped bearing hinge shaft to pass through, and a second locking pin passing through the second hinge hole to connect the boom cylinder hinge shaft to the second hinge hole. The curved or inclined profile of the front edge of the central main support plate provides greater clearance for the hinge components, avoiding motion interference; while the hinge lugs formed by the transverse cantilever plate protruding to one or both sides and connected by locking pins not only increase the load-bearing area of ​​the hinge parts and make the stress distribution more uniform, but also facilitate installation, disassembly and maintenance, and improve the maintainability of the equipment.

[0015] Preferably, the front-end main support bracket assembly further includes a vertical connecting rod assembly, which includes a first vertical tie rod and a second vertical tie rod. The first and second vertical tie rods are arranged parallel to each other on both sides of the central main support plate, and their ends are respectively connected between the upper and lower adjacent transverse cantilever plates to enhance the vertical shear strength of the transverse cantilever plates. The parallel arrangement of the first and second vertical tie rods between the upper and lower adjacent transverse cantilever plates significantly enhances the vertical shear strength of the multi-layer transverse cantilever plates. When the pile driver is subjected to vertical impact loads or eccentric moments, the vertical tie rods can effectively prevent interlayer misalignment or relative slippage between the cantilever plates, thereby ensuring the structural integrity of the front-end main support bracket assembly in the height direction and improving the reliability of the equipment under harsh sea conditions.

[0016] Preferably, each of the three adjacent transverse cantilever plates is fixedly connected to an extension positioning plate at its front end. The front ends of multiple extension positioning plates are fixedly connected by oblique lateral reinforcing ribs, which extend along the surface of the transverse cantilever plates. Extension positioning plates are provided at the front ends of the multi-layer transverse cantilever plates and fixedly connected by oblique lateral reinforcing ribs, forming a closed triangular or trapezoidal reinforced structure. This significantly enhances the bending and torsional strength of the front-end main support assembly in the horizontal plane. When the pile gripper is subjected to a large lateral bending moment from the pipe pile, the oblique lateral reinforcing ribs can effectively resist the torsional deformation of the front-end structure, ensuring the positioning accuracy and clamping stability of the gripper.

[0017] Preferably, the hinge point between the second hinge lug and the arc-shaped support plate is higher than the hinge point between the first hinge lug and the boom cylinder. Positioning the hinge point of the arc-shaped support plate above the boom cylinder hinge point creates a reasonable lever arm relationship between the thrust line of the boom cylinder and the reaction line of the arc-shaped support plate, further optimizing torque balance. This reduces the additional bending moment experienced by the boom cylinder when pushing the boom, making the force on the cylinder piston rod closer to axial compression, improving the cylinder's working efficiency and lifespan, and also reducing the risk of fatigue damage to the hinge lug.

[0018] Compared with the prior art, the present invention achieves the following beneficial technical effects: This invention significantly improves the overall rigidity and stability of the structure, achieving precise guidance. By incorporating an integrated limiting and bearing mechanism at the rear end, the front end of its support bracket assembly is hinged to both the boom cylinder and the arc-shaped bearing plate. Compared to existing technologies where the cylinder hinge point and bearing support point are separate, this invention concentrates the key loads generated during pile clamping operations—namely, the boom cylinder driving force and the lateral reaction force of the pipe pile—on a single high-strength, high-rigidity support bracket assembly. This integrated structural design eliminates potential relative displacement and deformation between dispersed hinge points, providing a stable and unified bearing platform for the pile clamp, greatly enhancing the overall structural rigidity and torsional strength of the pile clamp, thereby ensuring the guiding accuracy of the pipe pile during sinking and driving.

[0019] This invention optimizes the load transfer path, effectively disperses stress concentration, and eliminates safety hazards. The front-end main support bracket assembly adopts a three-dimensional frame structure of a central main support vertical plate and multiple layers of transverse cantilever plates, and the hinge parts of the boom cylinder and the arc-shaped bearing plate are staggered in the height and front-rear directions. This allows the thrust of the boom cylinder and the resistance of the boom to be transferred along a more reasonable spatial force line to the rear-end square frame bearing bracket assembly. This effectively disperses the huge bending moment and stress concentrated at the root of the cylinder lugs in traditional designs to the entire vertical plate, cantilever plate, and rear-end frame structure, avoiding localized stress concentration, significantly reducing the risk of fatigue cracks at the hinge points, fundamentally eliminating major structural safety hazards, and extending the service life of the equipment.

[0020] This invention provides a precise spatial limiting function to prevent overtravel accidents. The limiting bearing mechanism not only undertakes the bearing function, but its front main support bracket assembly and rear bearing bracket assembly together form a physical spatial boundary. When the boom cylinder drives the boom arm to open or close, the range of motion of the boom cylinder itself and the arc-shaped bearing plate hinged to it is precisely limited within the space defined by the support bracket assembly. This integrated physical limiting design effectively prevents overtravel movement of the cylinder and boom arm due to inertia or external forces in harsh sea conditions or due to operational errors, thereby avoiding serious equipment damage accidents such as cylinder piston rod bending, hinge lug tearing, or hydraulic line rupture, greatly improving the safety and reliability of equipment operation.

[0021] This invention distributes loads, reducing the need for modifications to the hull and piling frame, and improving versatility. The rear-end support assembly, with its square or rectangular frame structure and diagonal reinforcing ribs, disperses and homogenizes all concentrated loads from the front end, transferring them to the hull or piling frame via surface contact or a large-scale point-matrix contact method. This point-to-surface load conversion mechanism completely overcomes the shortcomings of existing piling devices that transmit huge concentrated loads to the hull through dispersed hinge points. Therefore, this invention significantly reduces the local structural strength requirements of the hull or piling frame, facilitating integrated design for new ships and enabling the safe upgrading or installation of high-performance piling devices on older ships with limited structural strength, greatly enhancing the product's versatility and market application scope.

[0022] This invention enhances shear and bending / torsional resistance, adapting to harsh sea conditions. The front main support assembly further incorporates a vertical connecting rod assembly, including first and second vertical tie rods and oblique lateral reinforcing ribs connecting the extension positioning plate. The vertical tie rods effectively enhance the shear strength of the multi-layered transverse cantilever plates in the vertical direction, preventing interlayer misalignment under massive vertical loads. The oblique lateral reinforcing ribs significantly improve the bending / torsional strength of the entire front support in the horizontal plane. These reinforced structures enable the piling device of this invention to maintain excellent fatigue resistance and structural integrity even in harsh marine environments with high sea states and strong swells, ensuring the continuity and safety of piling operations. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the pile driver for a pile-driving vessel with stable load-bearing support according to the present invention.

[0024] Figure 2 This is a schematic diagram of the front-end main support bracket assembly from the front.

[0025] Figure 3 This is a schematic diagram of the structure of the side end of the front main support bracket assembly.

[0026] Figure 4for Figure 2 A magnified view of a section at point M.

[0027] Figure 5 This is a schematic diagram of another embodiment.

[0028] In the diagram: 1-Pile gripper, 2-Limiting bearing mechanism, 20-Support bracket assembly, 200-Rear end bearing bracket assembly, 201-Longitudinal beam, 202-Transverse beam, 203-Diagonal reinforcing rib plate, 210-Front end main support bracket assembly, 211-Central main support upright plate, 212-Transverse cantilever plate, 213-First hinge part, 214-Second hinge part, 215-First hinge lug, 216-First hinge hole, 217-Second hinge lug, 218-Second hinge hole, 219-First locking pin, 220-Second locking pin, 221-First vertical tie rod, 222-Second vertical tie rod, 223-Extension positioning plate, 224-Diagonal lateral reinforcing rib plate, 3-Boom cylinder, 4-Arch-shaped positioning connection plate, 5-Arc-shaped bearing plate. Detailed Implementation

[0029] The present invention will be further explained and described below with reference to the accompanying drawings and embodiments. It should be noted that the specific embodiments described below are only for explaining the present invention and are not intended to limit the present invention. Furthermore, for ease of description, only the parts relevant to the present invention are shown in the drawings, not the entire structure.

[0030] Example 1: Refer to Figures 1 to 4 As shown, the present invention provides a pile-holding device for a pile-driving vessel with stable load-bearing support. The device includes a pile gripper 1, an opening and closing arm assembly for clamping the pile body, including a large arm and a small arm, a small arm cylinder for driving the small arm, a large arm cylinder 3 for driving the opening and closing arm assembly, an arched positioning connecting plate 4 hinged to the large arm cylinder 3, and an arc-shaped bearing plate 5 fixedly connected to the arched positioning connecting plate 4.

[0031] As a core improvement of this invention, a limiting and bearing mechanism 2 is also included. The limiting and bearing mechanism 2 is located at the rear end of the pile gripper 1, i.e., on the side away from the pile body, and is used to provide stable bearing support and precise movement limitation for the entire pile gripper.

[0032] Specifically, the limiting and bearing mechanism 2 includes at least one support bracket assembly 20. The front end of the support bracket assembly 20 is hinged to the boom cylinder 3 and the arc-shaped bearing plate 5, respectively. The support bracket assembly 20 is configured to: provide limiting and bearing support for the boom cylinder 3 and the arc-shaped bearing plate 5 during the clamping and opening process of the pile gripper 1; and provide spatial limiting and load distribution functions when subjected to force during pile driving operations.

[0033] Furthermore, referring to Figure 1 , Figure 2 and Figure 3 As shown, the support bracket assembly 20 specifically includes: a rear bearing bracket assembly 200 and a front main support bracket assembly 210.

[0034] The rear-end support bracket assembly 200 has a square or rectangular frame structure, and has a certain thickness along the direction perpendicular to the pile gripping plane, i.e., the axial direction of the pile gripper, to provide sufficient bending and torsional stiffness. Preferably, as follows... Figure 2 As shown, the rear support bracket assembly 200 includes a square frame formed by welding together multiple longitudinal beams 201 and transverse beams 202, and the interior and sides of the square frame are provided with two sets of cross-distributed diagonal reinforcing ribs 203 to further enhance its structural strength.

[0035] The front-end main support bracket assembly 210 extends laterally, i.e., horizontally, and is fixedly connected to or integrally formed on the front-end surface of the rear-end load-bearing bracket assembly 200. (Refer to...) Figure 2 and Figure 3 The front-end main support bracket assembly 210 includes a vertically extending central main support plate 211 and at least two layers of transverse cantilever plates 212 vertically connected to the central main support plate 211. In this embodiment, three layers are preferred. The plane where the central main support plate 211 is located is parallel to the swing plane of the pile gripper 1, i.e., the movement plane of the boom and forearm opening and closing. In the front end region of the transverse cantilever plate 212, a first hinge part 213 for hinged to the boom cylinder 3 and a second hinge part 214 for hinged to the arc-shaped bearing plate 5 are provided.

[0036] Reference Figure 1 and Figure 2 As shown, the first hinge portion 213 and the second hinge portion 214 are staggered in the height direction (vertical direction) and the front-back direction (direction away from or near the pile body) of the transverse cantilever plate 212. This staggered design avoids motion interference and optimizes the force transmission path.

[0037] Furthermore, referring to Figure 2 and Figure 3 The front edge of the central main support plate 211 has a curved or inclined profile extending toward the pile driver 1 to provide greater clearance space for the hinge components.

[0038] Reference Figure 2 , Figure 4As shown, the first hinge portion 213 includes a first hinge lug 215 protruding from the plate surface of the transverse cantilever plate 212 to one or both sides. The first hinge lug 215 has a first hinge hole 216 for the boom cylinder hinge shaft to pass through. A first locking pin 219 passes through the first hinge hole 216, thereby fixing the boom cylinder hinge shaft to the first hinge hole 216.

[0039] Reference Figure 2 As shown, the second hinge portion 214 includes a second hinge lug 217 protruding from the plate surface of the transverse cantilever plate 212 to one or both sides. The second hinge lug 217 has a second hinge hole 218 for the passage of the hinge shaft of the arc-shaped support portion. The second locking pin 220 passes through the second hinge hole 218, thereby fixing the hinge shaft of the arc-shaped support plate 5 to the second hinge hole 218.

[0040] Reference Figure 2 and Figure 3 As shown, to enhance the structural strength of the front main support bracket assembly 210, the front main support bracket assembly 210 further includes a vertical connecting rod assembly. The vertical connecting rod assembly includes a first vertical tie rod 221 and a second vertical tie rod 222. The first vertical tie rod 221 and the second vertical tie rod 222 are arranged parallel to each other on both sides of the central main support plate 211, and their two ends are respectively connected between the upper and lower adjacent transverse cantilever plates 212, thereby enhancing the vertical shear strength of the transverse cantilever plates 212.

[0041] In addition, refer to Figure 2 and Figure 3 As shown, each of the three adjacent transverse cantilever plates 212 is fixedly connected to an extension positioning plate 223 at its front end. The front ends of the multiple extension positioning plates 223 are fixedly connected by oblique lateral reinforcing ribs 224. The oblique lateral reinforcing ribs 224 extend along the surface of the transverse cantilever plates 212 to enhance the bending and torsional strength of the front main support bracket assembly 210 under axial force.

[0042] Reference Figure 3 As shown, as a further preferred structure, the hinge point of the second hinge lug 217 and the arc-shaped bearing plate 5 is higher than the hinge point of the first hinge lug 215 and the boom cylinder 3, so as to further optimize the torque balance.

[0043] Example 2: Refer to Figure 5As shown, another embodiment of the present invention is illustrated. The main difference between this embodiment and the first embodiment described above is that the number of transverse cantilever plates 212 in the front-end main support bracket assembly 210 is two layers. Correspondingly, the first vertical tie rod 221 and the second vertical tie rod 222 are connected between the upper and lower layers of transverse cantilever plates 212. The rear-end load-bearing bracket assembly 200 is provided with a set of cross-distributed diagonal reinforcing ribs 203. The remaining structure and connection relationships are basically the same as in the first embodiment, and will not be described again here. The two-layer structure is suitable for application scenarios with relatively low load-bearing requirements, and can further reduce manufacturing costs and overall weight while ensuring basic functions.

[0044] To facilitate understanding of the above technical solutions of the present invention, the following detailed description of the above technical solutions of the present invention will be provided through specific usage methods.

[0045] The specific working process is as follows: When pile driving is required, the pile gripper 1 is first fixedly installed on the hull or pile frame of the pile driving vessel through the rear bearing support assembly 200 of the limiting bearing mechanism 2. The rear bearing support assembly 200, through its square frame structure and diagonal reinforcing ribs 203, distributes and homogenizes all the loads generated by the subsequent operation and then transfers them to the hull.

[0046] Subsequently, the boom cylinder 3 actuates, driving the boom and forearm of the boom assembly to open or close. During this process, the thrust and reaction force of the boom cylinder 3 are transmitted to the front main support bracket assembly 210 through the first hinge 213; simultaneously, the arc-shaped bearing plate 5, which is linked with the boom assembly, also transmits the load to the same front main support bracket assembly 210 through the second hinge 214. Since the first hinge 213 and the second hinge 214 are both integrated on the same high-rigidity front main support bracket assembly 210, and the front main support bracket assembly 210 and the rear bearing bracket assembly 200 form an integrated three-dimensional frame, all loads converge on this unified bearing platform, avoiding relative displacement that may occur at dispersed hinge points.

[0047] Meanwhile, the front main support bracket assembly 210 and the rear load-bearing bracket assembly 200 together form a physical spatial boundary. When the boom cylinder 3 drives the boom arm movement, the movement range of the boom cylinder 3 itself and the arc-shaped load-bearing plate 5 is precisely limited within this boundary, thereby achieving precise spatial limitation and preventing overtravel accidents.

[0048] During the piling process, when the pipe pile is subjected to lateral surge impact or ground tilt resistance, the huge lateral load is transmitted to the limiting bearing mechanism 2 through the boom, the boom cylinder 3, and the arc-shaped bearing plate 5. The limiting bearing mechanism 2, through the combined action of its central main support plate 211, multi-layer lateral cantilever plates 212, first vertical tie rod 221, second vertical tie rod 222, and oblique lateral reinforcing rib plate 224, effectively disperses the concentrated stress, which is ultimately transmitted to the hull in the form of surface load by the rear bearing support assembly 200, thereby ensuring the structural stability and guiding accuracy of the entire piling device.

[0049] In summary, this invention, through its unique limiting and bearing mechanism, successfully solves a series of long-standing technical problems in the prior art, such as poor structural stability, stress concentration, lack of limiting, and unreasonable load transfer. It achieves a comprehensive improvement in structural stability, safety, versatility, and environmental adaptability, providing a more efficient, safe, and reliable solution for offshore pile foundation construction.

[0050] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0051] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention described herein.

Claims

1. A pile-holding device for a pile-driving vessel with stable load-bearing support, comprising a pile holder (1), an opening and closing arm assembly for clamping the pile body, a boom cylinder (3) for driving the opening and closing arm assembly, an arched positioning connecting plate (4) hinged to the boom cylinder (3), and an arc-shaped bearing plate (5) fixedly connected to the arched positioning connecting plate (4), characterized in that, Also includes: The limiting bearing mechanism (2) is located at the rear end of the pile gripper (1). The limiting bearing mechanism includes at least a support bracket assembly (20). The front end of the support bracket assembly (20) is hinged to the boom cylinder (3) and the arc-shaped bearing plate (5) respectively. It is used to support the pile gripper (1) and provide limiting and bearing support to the boom cylinder (3) and the arc-shaped bearing plate (5) during the clamping and opening of the pile gripper (1). It provides spatial limiting and load distribution functions when the pile driving operation is under stress.

2. The piling vessel holding device with stable load-bearing support according to claim 1, characterized in that, The support bracket assembly (20) includes: The rear support bracket assembly (200) has a square or rectangular frame structure and a certain thickness along the direction perpendicular to the pile plane; The front main support bracket assembly (210) extending laterally is fixedly connected to or integrally formed on the front end face of the rear bearing bracket assembly (200); The front-end main support bracket assembly (210) includes a vertically extending central main support plate (211) and at least two layers of transverse cantilever plates (212) vertically connected to the central main support plate (211). The plane of the central main support plate (211) is parallel to the swing plane of the pile driver (1). In the front-end region of the transverse cantilever plate (212), there is a first hinge part (213) for hinged to the boom cylinder (3) and a second hinge part (214) for hinged to the arc-shaped bearing plate (5).

3. The piling vessel holding device with stable load-bearing support according to claim 2, characterized in that, The rear support bracket assembly (200) includes a square frame formed by welding together multiple longitudinal beams (201) and transverse beams (202), and the interior and sides of the square frame are provided with diagonally distributed reinforcing ribs (203).

4. The piling vessel holding device with stable load-bearing support according to claim 2, characterized in that, The first hinge portion (213) and the second hinge portion (214) are staggered in the height direction and the front-back direction of the transverse cantilever plate (212).

5. The piling vessel holding device with stable load-bearing support according to claim 4, characterized in that, The front edge of the central main support plate (211) has a curved or inclined profile extending toward the pile driver (1). The first hinge part (213) includes a first hinge lug (215) protruding from the plate surface of the transverse cantilever plate (212) to one or both sides. The first hinge lug (215) has a first hinge hole (216) for passing through the boom cylinder hinge shaft. The first locking pin (219) passes through the first hinge hole (216) to connect the boom cylinder hinge shaft to the first hinge hole (216). The second hinge part (214) includes a second hinge ear (217) protruding from the plate surface of the transverse cantilever plate (212) to one or both sides. The second hinge ear (217) is provided with a second hinge hole (218) for passing through the hinge shaft of the arc-shaped bearing part. The second locking pin (220) passes through the second hinge hole (218) to connect the boom cylinder hinge shaft to the second hinge hole (218).

6. The piling vessel holding device with stable load-bearing support according to claim 4, characterized in that, The front-end main support bracket assembly (210) also includes a vertical connecting rod assembly (218), which includes a first vertical tie rod (221) and a second vertical tie rod (222). The first vertical tie rod (221) and the second vertical tie rod (222) are arranged parallel to each other on both sides of the central main support plate (211), and their two ends are respectively connected between the upper and lower adjacent horizontal cantilever plates (212) to enhance the vertical shear strength of the horizontal cantilever plates (212).

7. The piling vessel holding device with stable load-bearing support according to claim 6, characterized in that, The front ends of the three adjacent transverse cantilever plates (212) are all fixedly connected with extension positioning plates (223). The front ends of the multiple extension positioning plates (223) are fixedly connected by oblique lateral reinforcing ribs (224). The oblique lateral reinforcing ribs (224) extend along the direction of the transverse cantilever plate (212) to enhance the bending and torsional strength of the front main support bracket assembly (210) under axial force.

8. The piling vessel holding device with stable load-bearing support according to claim 5, characterized in that, The hinge point of the second hinge lug (217) and the arc-shaped bearing plate (5) is higher than the hinge point of the first hinge lug (215) and the boom cylinder (3).

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