A double-layer pile-holding device for a pile stabilization platform

Abstract

The utility model relates to a kind of double-layered pile gripper of pile stabilizing platform, by being set in the locking hole cooperation of locking rod and arc arm of inclined strut, form the double protection mechanism of " hydraulic cylinder drive + mechanical locking ";If the first hydraulic cylinder fails, also can be through the cooperation of locking rod and locking hole, through mechanical rigid locking prevents arc arm accidental rotation, fundamentally avoid the safety accident caused by hydraulic cylinder failure, substantially improve the safety redundancy of pile gripper;Inclined strut between pile gripper frame body and fixed seat not only can disperse radial load in the process of pile gripping, reduce the deformation risk of fixed seat, also provide stable installation carrier for locking rod;The cooperation of locking rod and locking hole makes the stress transmission path of arc arm more reasonable, part of the reaction force of pile body borne by arc arm is transmitted to pile gripper frame body, reduces the sustained stress load of hydraulic cylinder, prolongs the service life of hydraulic system, while improving the overall structural stability of pile gripper under complex load.

Description

Technical Field

[0001] This utility model relates to the field of pile gripper technology, and in particular to a double-layer pile gripper for a pile stabilization platform. Background Technology

[0002] In the field of pile foundation construction, especially in the installation of large piles such as offshore wind turbine piles and deep-water bridge foundation piles, pile grippers are key equipment to ensure the verticality and stability of the piles. Currently, most mainstream pile grippers adopt a symmetrical arc-shaped arm structure. The arc-shaped arms are driven to rotate by hydraulic cylinders, so that the two arc-shaped arms close to form a ring-shaped gripping space, thereby achieving the clamping and fixing of the pile.

[0003] However, existing pile grippers rely solely on the extension and retraction force of hydraulic cylinders for position control, resulting in significant stability defects. During construction, the pile is subjected to external forces such as wind, waves, and impact loads, requiring the curved arm to continuously withstand substantial reaction forces. Long-term reliance on the hydraulic cylinder's hydraulic lock for positioning makes it susceptible to positioning failures due to hydraulic system leaks or cylinder malfunctions. If one hydraulic cylinder fails, the corresponding curved arm will rotate and open under the pile's reaction force, causing the pile to lose effective clamping. This not only affects the pile's verticality accuracy but can also lead to serious safety accidents such as pile tilting or falling, posing a severe threat to the safety of construction personnel and equipment. Furthermore, while some pile grippers employ a double-layer structure to improve stability, the curved arms of the upper and lower pile gripping components still fail to overcome the inherent defects of relying solely on hydraulic cylinder positioning, resulting in low overall safety redundancy and difficulty meeting the high reliability requirements of complex construction environments. Utility Model Content

[0004] This utility model aims to at least partially solve one of the problems existing in the existing related technologies. To this end, this utility model proposes a pile gripper structure that can effectively lock the arc arm even when the hydraulic cylinder fails, so as to improve construction safety and equipment stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A double-layer pile gripper for a pile stabilization platform includes a pile gripping frame. Pile gripping components are spaced vertically at the front of the frame. Each component includes a fixed base fixed to the frame. Arc-shaped arms are hinged to the left and right sides of the fixed base, and a first hydraulic cylinder drives the arc-shaped arms to swing. A diagonal brace connects the frame and the fixed base. A locking rod passes through the diagonal brace. A locking hole is provided on the arc-shaped arm. A driving device is provided on the frame. The driving device drives the locking rod to move and insert it into the locking hole to lock the arc-shaped arm.

[0006] In some embodiments, a middle crossbeam is provided on the front side of the pile-holding frame, and the middle crossbeam is located between the upper and lower fixed seats.

[0007] In some embodiments, four diagonal braces are provided, which are arranged symmetrically in the upper and lower and left and right directions, respectively. One end of each of the four diagonal braces is connected to the middle crossbeam, and the other end is connected to the two fixed seats above and below.

[0008] In some embodiments, the intermediate crossbeam is provided with an installation cavity, and the locking rods in the four diagonal braces all extend into the installation cavity. The two upper locking rods and the two lower locking rods are each a group, and a connecting rod is connected between the two locking rods in the corresponding group. A second hydraulic cylinder is also provided on the intermediate crossbeam. The piston rod of the second hydraulic cylinder is arranged along the front and back and a moving block is installed. A longitudinal sliding groove is provided on the moving block, and both connecting rods are located in the longitudinal sliding groove.

[0009] In some embodiments, anti-detachment mechanisms are provided at the outer ends of the two arc-shaped arms on the same horizontal line.

[0010] In some embodiments, the anti-detachment mechanism includes an upper connector, a lower connector, and a locking pin, wherein the locking pin passes between the upper connector and the lower connector, the upper connector is located at the outer end of one of the arc-shaped arms, and the lower connector is located at the outer end of the other arc-shaped arm.

[0011] In some embodiments, a correction mechanism is further provided on the arc-shaped arm, the correction mechanism including a third hydraulic cylinder provided on the arc-shaped arm, and a push block provided on the piston rod of the third hydraulic cylinder.

[0012] In some embodiments, a guardrail is provided on the arc-shaped arm.

[0013] In some embodiments, a ladder is also provided on the pile-holding frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a locking rod inside the diagonal brace and cooperating with the locking hole of the arc arm, a dual protection mechanism of "hydraulic cylinder drive + mechanical locking" is formed. When the first hydraulic cylinder is working normally, the locking rod can serve as an auxiliary positioning structure to enhance the stability of the arc arm. If the first hydraulic cylinder fails, the locking rod and the locking hole can also cooperate to mechanically and rigidly lock the arc arm to prevent accidental rotation, fundamentally avoiding safety accidents caused by hydraulic cylinder failure and greatly improving the safety redundancy of the pile gripper.

[0015] 2. The diagonal bracing between the pile gripping frame and the fixed base not only disperses the radial load during the pile gripping process and reduces the risk of deformation of the fixed base, but also provides a stable mounting carrier for the locking rod. The cooperation between the locking rod and the locking hole makes the force transmission path of the arc arm more reasonable, transferring part of the pile reaction force borne by the arc arm to the pile gripping frame, reducing the continuous load on the hydraulic cylinder, extending the service life of the hydraulic system, and improving the overall structural stability of the pile gripper under complex loads. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the pile gripper of this utility model.

[0017] Figure 2 This is a top view of the pile gripper of this utility model.

[0018] Figure 3 This utility model Figure 1 Enlarged diagram of point A.

[0019] Figure 4 This utility model Figure 2 Schematic diagram of section AA.

[0020] Figure 5 This utility model Figure 4 Enlarged diagram of point B.

[0021] Figure 6 This is an enlarged schematic diagram of the locking rod of this utility model disengaging from the locking hole. Detailed Implementation

[0022] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0023] like Figures 1-6 The illustrated double-layer pile gripper for a pile stabilizing platform includes a pile gripping frame 1. Pile gripping components are spaced vertically at the front of the pile gripping frame 1. Each pile gripping component includes a fixed base 2 fixed to the pile gripping frame 1. Arc-shaped arms 3 are hinged to the left and right sides of the fixed base 2, and a first hydraulic cylinder 4 drives the arc-shaped arms 3 to swing. A diagonal brace 5 connects the pile gripping frame 1 and the fixed base 2. A locking rod 6 is movably inserted into the diagonal brace 5. A locking hole 7 is provided on the arc-shaped arm 3. A driving device is provided on the pile gripping frame 1. The driving device drives the locking rod 6 to move and insert it into the locking hole 7 to lock the arc-shaped arm 3.

[0024] Based on the above structure, by setting a locking rod 6 inside the diagonal brace 5 and cooperating with the locking hole 7 of the arc arm 3, a dual protection mechanism of "hydraulic cylinder drive + mechanical locking" is formed. When the first hydraulic cylinder 4 is working normally, the locking rod 6 can serve as an auxiliary positioning structure to enhance the stability of the arc arm 3. If the first hydraulic cylinder 4 fails, the locking rod 6 and the locking hole 7 can also cooperate to mechanically and rigidly lock the arc arm 3 to prevent accidental rotation, fundamentally avoiding safety accidents caused by hydraulic cylinder failure and greatly improving the safety redundancy of the pile gripper.

[0025] In addition, the diagonal bracing rod 5 between the pile clamping frame 1 and the fixed seat 2 can not only disperse the radial load during the pile clamping process and reduce the risk of deformation of the fixed seat 2, but also provide a stable mounting carrier for the locking rod 6. The cooperation between the locking rod 6 and the locking hole 7 makes the force transmission path of the arc arm 3 more reasonable, and transmits part of the pile reaction force borne by the arc arm 3 to the pile clamping frame 1, reducing the continuous load on the hydraulic cylinder, extending the service life of the hydraulic system, and improving the overall structural stability of the pile clamp under complex loads.

[0026] See Figure 1 , Figure 4 As shown, a middle crossbeam 21 is provided on the front side of the pile-holding frame 1, and the middle crossbeam 21 is located between the upper and lower fixed seats 2.

[0027] Specifically, on the front side of the pile-holding frame 1, an intermediate crossbeam 21 is provided between the upper and lower fixed seats 2. The intermediate crossbeam 21 is fixedly connected to the pile-holding frame 1 and serves as an intermediate component connecting the upper and lower structures.

[0028] The intermediate crossbeam 21 increases the overall rigidity of the front side of the pile clamping frame 1, connects the upper and lower fixed seats 2 into an integral force-bearing structure, disperses the load borne by the fixed seats 2, reduces the relative displacement between the upper and lower fixed seats 2, and further improves the structural stability of the pile clamping device.

[0029] Furthermore, four diagonal braces 5 are provided, which are arranged symmetrically in the upper and lower and left and right directions respectively. One end of each of the four diagonal braces 5 is connected to the middle crossbeam 21, and the other end is connected to the two fixed seats 2 above and below respectively.

[0030] The symmetrical arrangement of the four diagonal braces 5 makes the force distribution more even, which can more effectively transfer the load borne by the fixed seat 2 to the middle crossbeam 21 and the pile clamping frame 1, greatly enhances the stability of the connection between the fixed seat 2 and the pile clamping frame 1, reduces the risk of structural deformation, and improves the load-bearing capacity of the pile clamping device under complex working conditions.

[0031] See Figures 4-6As shown, the intermediate crossbeam 21 is provided with an installation cavity 41. The locking rods 6 in the four diagonal braces 5 all extend into the installation cavity 41. The two upper locking rods 6 and the two lower locking rods 6 are each a group. A connecting rod 42 is connected between the two locking rods 6 in the corresponding group. A second hydraulic cylinder 43 is also provided on the intermediate crossbeam 21. The piston rod of the second hydraulic cylinder 43 is arranged along the front and back and a moving block 44 is installed. A longitudinal sliding groove 45 is provided on the moving block 44. Both connecting rods 42 are located in the longitudinal sliding groove 45.

[0032] The second hydraulic cylinder 43 drives the moving block 44, and with the cooperation of the longitudinal slide groove 45 and the connecting rod 42, the two locking rods 6 in a set can be controlled to move synchronously at the same time, realizing the linkage operation of the locking rods 6. This simplifies the drive structure and control process, improves the efficiency and synchronization of locking and unlocking operations, reduces the number of drive devices, and lowers equipment costs and failure probability.

[0033] See Figures 1-3 As shown, anti-detachment mechanisms are provided at the outer ends of the two arc-shaped arms 3 on the same horizontal line. The anti-detachment mechanisms further enhance the stability of the arc-shaped arms 3 after they are closed, and prevent the outer ends of the two arc-shaped arms 3 from separating due to external impacts or other reasons during the pile clamping process. This ensures that the arc-shaped arms 3 effectively clamp the pile body and improves the safety performance of the pile clamp.

[0034] Furthermore, the anti-detachment mechanism includes an upper connector 61, a lower connector 62, and a locking pin 63. The locking pin 63 passes between the upper connector 61 and the lower connector 62. The upper connector 61 is located at the outer end of one of the arc-shaped arms 3, and the lower connector 62 is located at the outer end of the other arc-shaped arm 3.

[0035] The anti-detachment mechanism has a simple structure and is easy to operate. Through the rigid connection of the locking pin 63, it can reliably prevent the outer ends of the two arc arms 3 from accidentally detaching, enhance the overall holding force of the arc arms 3 after closure, and facilitate quick disassembly without affecting the normal opening and closing operation of the arc arms 3.

[0036] See Figure 1 , Figure 2 As shown, a correction mechanism is also provided on the arc-shaped arm 3. The correction mechanism includes a third hydraulic cylinder 71 provided on the arc-shaped arm 3, and a push block 72 is provided on the piston rod of the third hydraulic cylinder 71.

[0037] A third hydraulic cylinder 71 is installed on the arc-shaped arm 3. Specifically, two third hydraulic cylinders 71 are evenly distributed on each arc-shaped arm 3. The piston rod of the third hydraulic cylinder 71 faces the pile body, and the push block 72 is fixed at the end of the piston rod. The push block 72 can contact the pile body under the drive of the third hydraulic cylinder 71.

[0038] Thus, the correction mechanism can drive the push block 72 through the third hydraulic cylinder 71 to fine-tune the position of the pile. When the pile deviates slightly, it can correct the verticality of the pile in time, further improving the accuracy of pile clamping, ensuring that the pile is constructed at the correct angle, and guaranteeing the quality of pile foundation construction. Of course, this correction mechanism is a conventional design and will not be described in detail here.

[0039] See Figure 1 As shown, a guardrail 81 is provided on the arc-shaped arm 3. The guardrail 81 provides safety protection for construction workers when working on the arc-shaped arm 3, preventing accidental falls. Especially in complex construction environments such as at sea, it improves the safety of operations and reduces the risk of accidents.

[0040] Furthermore, a ladder 91 is also provided on the pile-holding frame 1. The ladder 91 provides a convenient access for construction personnel to go up and down, making it easy to inspect, maintain and operate the various components of the pile-holding device, reducing the time and difficulty of going up and down, and improving construction efficiency and convenience.

[0041] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-layer pile gripper for a pile stabilizing platform, comprising a pile gripping frame (1), wherein pile gripping components are spaced vertically on the front side of the pile gripping frame (1), the pile gripping components comprising a fixed seat (2) fixed to the pile gripping frame (1), and arc-shaped arms (3) hinged to the left and right sides of the fixed seat (2) and a first hydraulic cylinder (4) for driving the arc-shaped arms (3) to swing, characterized in that: A diagonal brace (5) is connected between the pile-holding frame (1) and the fixed base (2). A locking rod (6) is movably inserted in the diagonal brace (5). A locking hole (7) is provided on the arc-shaped arm (3). A driving device is provided on the pile-holding frame (1). The driving device is used to drive the locking rod (6) to move so as to insert it into the locking hole (7) to lock the arc-shaped arm (3).

2. The double-layer pile gripper for a pile stabilization platform according to claim 1, characterized in that: The front side of the pile-holding frame (1) is provided with a middle crossbeam (21), which is located between the upper and lower fixed seats (2).

3. The double-layer pile gripper for a pile stabilization platform according to claim 2, characterized in that: The diagonal bracing rod (5) is provided in four parts. The four diagonal bracing rods (5) are arranged symmetrically in the upper and lower and left and right directions respectively. One end of the four diagonal bracing rods (5) is connected to the middle crossbeam (21), and the other end is connected to the two fixed seats (2) above and below respectively.

4. The double-layer pile gripper for a pile stabilization platform according to claim 3, characterized in that: An installation cavity (41) is provided in the middle crossbeam (21). The locking rods (6) in the four diagonal braces (5) all extend into the installation cavity (41). The two upper locking rods (6) and the two lower locking rods (6) are each a group. A connecting rod (42) is connected between the two locking rods (6) in the corresponding group. A second hydraulic cylinder (43) is also provided on the middle crossbeam (21). The piston rod of the second hydraulic cylinder (43) is arranged along the front and back and a moving block (44) is installed. A longitudinal slide groove (45) is provided on the moving block (44). Both connecting rods (42) are located in the longitudinal slide groove (45).

5. The double-layer pile gripper for a pile stabilization platform according to claim 1, characterized in that: Anti-detachment mechanisms are provided at the outer ends of the two arc-shaped arms (3) on the same horizontal line.

6. The double-layer pile gripper for a pile stabilization platform according to claim 5, characterized in that: The anti-detachment mechanism includes an upper connector (61), a lower connector (62), and a locking pin (63). The locking pin (63) is inserted between the upper connector (61) and the lower connector (62). The upper connector (61) is located at the outer end of one of the arc-shaped arms (3), and the lower connector (62) is located at the outer end of the other arc-shaped arm (3).

7. The double-layer pile gripper for a pile stabilization platform according to claim 1, characterized in that: A correction mechanism is also provided on the arc arm (3). The correction mechanism includes a third hydraulic cylinder (71) provided on the arc arm (3), and a push block (72) is provided on the piston rod of the third hydraulic cylinder (71).

8. The double-layer pile gripper for a pile stabilization platform according to claim 1, characterized in that: A guardrail (81) is provided on the arc-shaped arm (3).

9. A double-layer pile gripper for a pile stabilization platform according to claim 1, characterized in that: A ladder (91) is also provided on the pile-holding frame (1).

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