Pile turning oil cylinder and ocean engineering equipment and pile turning method thereof

Abstract

The invention relates to the technical field of ocean engineering equipment, and discloses a pile turning oil cylinder for ocean engineering, equipment of the pile turning oil cylinder and a pile turning method. When clamping is needed, a piston rod stretches out, a hydraulic system supplies hydraulic oil to a second oil port of the oil cylinder, the hydraulic oil flows into a rodless cavity through a rodless pipeline, the pressure of the rodless cavity is gradually increased, namely, the output force is increased; when the output force is greater than the loading force, the piston rod extends out, and the rod cavity hydraulic oil flows back to the oil tank through the rod pipeline and the first oil port; the movable joint is driven to stretch upwards, so that the claw body rotates around the base to drive the clamping claw to open and close to clamp a target pile body; after clamping is completed, the piston rod retracts, the hydraulic system supplies hydraulic oil to the first oil port of the oil cylinder, the hydraulic oil flows into the rod cavity through the rod pipeline, the pressure of the rod cavity is gradually increased, namely, the output force is increased, and when the output force is larger than the loading force, the piston rod retracts, and at the moment, the hydraulic oil in the rod cavity flows back to the oil tank through the rodless pipeline and the second oil port.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a pile turning cylinder and marine engineering equipment and a pile turning method thereof. Background Art

[0002] Pile turner is a kind of engineering equipment, mainly used in the construction of bridges, offshore operations and other projects. Its function is to turn over steel pipe piles for easy transportation and installation.

[0003] As an important equipment used in engineering construction such as bridges and offshore operations, the main function of the pile turner is to turn the steel pipe pile from a horizontal state to a vertical state to facilitate subsequent transportation, installation and piling operations. The design and operation of the pile turner are crucial to ensuring the progress and safety of the project. The traditional pile turner consists of a mounting base and a number of clamping parts, which usually include a hydraulic cylinder and a clamping claw linked to it. The hydraulic cylinder is powered by an external power station, which usually consists of an oil pump driven by a motor and an oil tank connected to the oil pump. The oil pump provides oil to the hydraulic cylinder on the mounting base through a pipeline.

[0004] In the working mode of traditional pile turning device, the oil pipe of the hydraulic system connects the external power source and the pile turning device, which has certain limitations. Especially when working at sea, the sea wind, waves and other uncertain factors on the sea surface pose a great challenge to the working environment; working when the waves are large will cause the oil pipe to shake or entangle, which may cause the hydraulic system to fail, thus affecting the operating accuracy and safety of the pile turning device. Especially when performing precise operations, such as lifting the steel pipe pile to the specified position accurately, the unstable oil pressure may cause the pile turning device to be unable to maintain a stable clamping state, thereby increasing the risk of accidents during the operation.

[0005] An integrated pile flipping and transferring equipment with national application number 202010466999.4 includes a mounting seat and a plurality of clamping components evenly distributed on the mounting seat, each clamping component is driven by a hydraulic cylinder to clamp or separate, and a driving component is provided on the mounting seat, which includes a battery fixed on the mounting seat, a motor electrically connected to the battery, an oil pump driven by the motor and an oil tank connected to the oil pump, and the oil tank is provided with hydraulic oil inlet and outlet oil passages respectively connected to each hydraulic cylinder.

[0006] Although the integrated pile turning equipment has a relatively simplified design in structure and solves the problem of complex hydraulic system and dependence on external power station in traditional pile turning devices, the oil pump of the equipment is driven by an electric motor. Under long-term operation or high-load operation, the motor may overheat, lack of power or loss problems, resulting in the oil pump being unable to supply oil stably, affecting the normal operation of the hydraulic system, and then affecting the precise movement of the clamping components and reducing operating efficiency. These defects may affect the stability, operating efficiency and safety of the equipment. Summary of the invention

[0007] In order to solve the above-mentioned problems in the prior art, the present invention provides a pile turning cylinder for marine engineering;

[0008] Another object of the present invention is to provide a marine engineering equipment equipped with a pile turning cylinder;

[0009] Another object of the present invention is to provide a method for turning piles of marine engineering equipment.

[0010] In order to solve the above technical problems, the technical solution of the present invention is as follows: a pile turning cylinder, comprising a piston rod arranged in a cylinder body cavity, the piston rod divides the cylinder body cavity into a rod cavity and a rodless cavity, the two cavities respectively contain hydraulic oil to drive the piston to move; the rod cavity and the rodless cavity are connected to a first oil port and a second oil port through a rod pipeline and a rodless pipeline respectively;

[0011] The second oil port is also connected to the pressure relief oil port through a pressure relief pipeline. A plurality of pressure relief holes are arranged on the outer periphery of the cylinder body. The pressure relief holes are all connected to the pressure relief oil port for quick oil unloading.

[0012] Furthermore, an oil port groove is provided on the cylinder body, the rod pipeline and the rodless pipeline are arranged in the cylinder body, the first oil port and the second oil port are arranged in the oil port groove, and the rod pipeline is also connected to the pressure measuring port.

[0013] Furthermore, a connecting ring is provided at the end of the piston rod, a connecting groove is provided at the end of the connecting ring, and the end of the piston rod is inserted into the connecting groove and locked by bolt connection.

[0014] Furthermore, a connecting sleeve is sleeved on the piston rod; the connecting sleeve is arranged at the entrance of the inner cavity of the cylinder body and is used to abut against the piston head of the piston rod.

[0015] Preferably, a sealing device is provided on the outside of the rotary joint, and the sealing device includes an O-ring, a V-ring or a friction sealing ring. These sealing elements can effectively maintain the pressure of the hydraulic system and ensure the normal operation of the cylinder.

[0016] Preferably, the sealing device is usually made of rubber or polyurethane materials that are resistant to high pressure, high temperature and corrosion.

[0017] A marine engineering equipment of a pile-turning cylinder, the equipment comprises a clamping device, the clamping device is driven by the pile-turning cylinder to clamp or separate, the clamping device comprises a driving arm and a clamping claw, the clamping claw is connected to the end of the driving arm and connected to the pile-turning cylinder;

[0018] The driving arm includes a first arm, a second arm and a third arm. The first arm is connected to the second arm via a first rotating joint, and the second arm is connected to the third arm via a second rotating joint. Rotating motors are provided in the first rotating joint and the second rotating joint. The driving arm can be freely adjusted in angle by driving the rotating motors.

[0019] Furthermore, the clamping claw comprises a plurality of claw bodies and a base; each claw body is connected to the base via a movable joint and can freely open and close, thereby achieving clamping of workpieces of different shapes.

[0020] Furthermore, the claw body has an arc-shaped structure, and its end is designed with anti-slip teeth to increase the clamping force; the claw body is made of high-strength, wear-resistant metal material, and its surface is specially coated to prevent corrosion.

[0021] Furthermore, the claw body is movably connected to the base via a bearing, the movable joint is slidably connected to the base, the end of the movable joint is movably connected to the claw body, and the pile-turning cylinder drives the movable joint to slide along the height of the base and drives the claw body to rotate around the base to drive the clamping claw to open and close.

[0022] A method for turning piles of marine engineering equipment, the method comprising the following steps:

[0023] S1: Use the clamping claws of the clamping device to adjust the opening and closing states, clamp or fix the target pile, and ensure that the anti-slip teeth of the claws are in full contact with the surface of the pile to avoid loosening or slipping during the pile turning process;

[0024] S2: Start the hydraulic system, drive the movable joint to slide along the height of the base, and drive the claw body to close the clamping claw; adjust the opening and closing angle of the clamping claw according to the shape and size of the target pile body, so that the arc structure of the claw body fits the pile body completely, and ensure that the clamping force of the clamping device is sufficient by adjusting the pressure of the hydraulic oil, and confirm that the claw body has clamped the target pile body;

[0025] S3: Start the rotary motors in the first rotary joint and the second rotary joint, adjust the angle of the driving arm, and flip the pile body at the set path and angle; according to the operation requirements, the angles of the first arm, the second arm and the third arm can be adjusted to ensure the accuracy of the pile turning action;

[0026] S4: The hydraulic system adjusts the hydraulic pressure of the oil cylinder in real time to drive the piston rod to reciprocate to provide the power required for pile turning; according to the progress of pile turning, the oil is quickly unloaded through the pressure relief pipe and pressure relief hole to ensure the stability and controllability of the pile turning action;

[0027] S5: After the pile turning is completed, stop the rotating motor, adjust the driving arm to the initial position, reverse the movable joint through the hydraulic system, drive the clamping claw to loosen the pile body, and ensure the safe release of the pile body; then control the pile turning cylinder to return the piston rod to ensure that the rod chamber and the rodless chamber are in the initial pressure balance state; finally, check whether the pressure relief oil circuit has completed the pressure relief and ensure that the equipment is in standby state.

[0028] Furthermore, when multiple pile turning operations are required, step S4 is repeated, and before each pile turning operation, a quick check is performed on the clamping device and the pile turning cylinder to ensure the normal operation of the equipment.

[0029] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0030] ① The present invention is designed to connect the pressure relief holes arranged on the periphery of the cylinder body with the pressure relief oil port, so that the oil can be quickly unloaded during the pile turning action, the pile turning operation time can be shortened, and the overall work efficiency can be improved.

[0031] ② The driving arm is driven by the motors of the first rotary joint and the second rotary joint, which can achieve multi-degree-of-freedom angle adjustment and flexibly adapt to complex marine environments and various pile-turning conditions.

[0032] ③The hydraulic system can also accurately adjust the movement of the piston rod to provide efficient power output for the pile turning action, ensuring that the pile turning action is smooth and stable.

[0033] ④ A rotary motor is installed in the rotary joint of the driving arm, which can realize precise angle adjustment and cooperate with the real-time pressure regulation of the hydraulic system to effectively improve the control accuracy and reliability of the pile turning action.

[0034] ⑤ The claw body of the clamping claw has an arc-shaped structure, and the anti-slip tooth design at the end can firmly clamp the target pile. The claw body of the clamping claw can also open and close freely through a movable joint, and can adapt to piles of different shapes and sizes, thereby meeting diverse engineering needs.

[0035] ⑥ The present invention can realize automatic pile turning operation by controlling the hydraulic system and the motor of the rotating joint, reduce manual intervention and improve the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is the first telescopic cross-sectional view of the pile turning cylinder;

[0038] Figure 2 It is the second telescopic cross-sectional view of the pile turning cylinder;

[0039] Figure 3 This is a schematic diagram of the structure of the pile turning cylinder;

[0040] Figure 4 It is the first structural schematic diagram of the marine engineering equipment equipped with the pile turning cylinder;

[0041] Figure 5 It is a second structural schematic diagram of the marine engineering equipment equipped with the pile turning cylinder;

[0042] Figure 6 It is a schematic diagram of the structure of the claw body.

[0043] The reference numerals are as follows:

[0044] 1. Cylinder body; 2. Piston rod; 3. Rod pipe; 4. Rodless pipe; 5. First oil port; 6. Second oil port; 7. Pressure relief pipe; 8. Pressure relief oil port; 9. Pressure relief hole; 10. Oil port groove; 11. Pressure measuring port; 12. Connecting ring; 13. Connecting sleeve; 14. Driving arm; 1401. First arm; 1402. Second arm; 1403. Third arm; 1404. First rotating joint; 1405. Second rotating joint; 15. Clamping claw; 1501. Claw body; 1502. Base; 1503. Movable joint. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] Example 1

[0048] like Figure 1-6 As shown, this embodiment discloses a pile turning cylinder, comprising a piston rod 2 arranged in the inner cavity of a cylinder body 1, the piston rod 2 divides the inner cavity of the cylinder body 1 into a rod cavity and a rodless cavity, the two cavities respectively contain hydraulic oil to drive the piston to move; the rod cavity and the rodless cavity are connected to a first oil port 5 and a second oil port 6 through a rod pipeline 3 and a rodless pipeline 4 respectively;

[0049] The second oil port 6 is also connected to the pressure relief oil port 8 through the pressure relief pipe 7. A plurality of pressure relief holes 9 are arranged on the outer periphery of the cylinder body 1. The pressure relief holes 9 are all connected to the pressure relief oil port 8 for quick oil unloading.

[0050] During operation, check the equipment status to ensure that the cylinder body 1, piston rod 2, rod pipe 3, rodless pipe 4, pressure relief pipe 7 and pressure relief oil port 8 are connected normally, the hydraulic oil is sufficient and there is no leakage, check whether the connection between the first oil port 5, the second oil port 6 and the hydraulic system is firm; then pressurize the rod chamber or rodless chamber through the hydraulic system to ensure that the piston rod 2 is in the initial position.

[0051] The first oil port 5 and the second oil port 6 are connected to the oil tank respectively, and the piston rod 2 is connected to the movable joint 1503 of the clamping device through the connecting ring 12;

[0052] When clamping is required, the piston rod extends, and the hydraulic system supplies hydraulic oil to the second oil port 6 of the cylinder. The hydraulic oil flows into the rodless chamber through the rodless pipe 4, and the pressure in the rodless chamber gradually increases, that is, the output force increases. When the output force is greater than the load force, the piston rod extends. At this time, the hydraulic oil in the rod chamber flows back to the oil tank through the rod pipe 3 and the first oil port 5; thereby driving the movable joint 1503 to retract and extend upward, so that the claw body 1501 rotates around the base 1502 to drive the clamping claw 15 to open and close and clamp the target pile body; the opening and closing angle of the clamping claw can be controlled by adjusting the hydraulic pressure according to the size and shape of the target pile body.

[0053] When the clamping is completed, the piston rod is retracted, and the hydraulic system supplies hydraulic oil to the first oil port 5 of the cylinder. The hydraulic oil flows into the rod chamber through the rod pipe 3. The pressure in the rod chamber gradually increases, that is, the output force increases. When the output force is greater than the load force, the piston rod is retracted. At this time, the hydraulic oil in the rod chamber flows back to the oil tank through the rodless pipe 4 and the second oil port 6.

[0054] When there is a blockage in the rod cavity, the internal pressure of the hydraulic system may increase rapidly, causing unstable operation or even damage to the equipment; the excess hydraulic oil can be quickly released through the pressure relief pipe 7 and the pressure relief hole 9 to reduce the internal pressure of the system;

[0055] If necessary, a built-in pressure sensor can be installed in the hydraulic system to monitor the changes in rod chamber pressure in real time. When the pressure exceeds the preset safety threshold, the system automatically opens the pressure relief pipe to ensure that the internal pressure is quickly released.

[0056] As a specific implementation, an oil port groove 10 is provided on the cylinder body 1, a rod pipe 3 and a rodless pipe 4 are arranged in the cylinder body 1, a first oil port 5 and a second oil port 6 are arranged in the oil port groove 10, and the rod pipe 3 is also connected to the pressure measuring port 11.

[0057] Specifically, the cylinder body 1 is the main component of the pile turning cylinder, and an inner cavity for accommodating the piston rod 2 is formed therein; the inner cavity is divided into a rod cavity and a rodless cavity by the piston rod 2, which are used to respectively accommodate hydraulic oil to realize the hydraulic driving function;

[0058] An oil port groove 10 is arranged outside the cylinder body 1. The oil port groove adopts a groove structure to centrally accommodate the first oil port 5 and the second oil port 6, so that the oil circuit layout of the hydraulic system is more compact and safe; the opening position of the oil port groove 10 is convenient for connecting the pipeline with the external hydraulic system, while reducing the exposed area of ​​the pipeline, improving the overall protection performance of the equipment, and is particularly suitable for the high-humidity and high-corrosion working environment in marine engineering.

[0059] Specifically, the rod pipe 3 and the rodless pipe 4 are completely built into the cylinder body 1, which can effectively reduce the exposure of external pipelines and reduce the risk of pipeline damage in harsh environments; the inner surface of the pipeline is specially treated to reduce the resistance to the flow of hydraulic oil and improve the system operation efficiency.

[0060] As a specific implementation, a connecting ring 12 is further provided at the end of the piston rod 2. A connecting groove is provided at the end of the connecting ring 12. The end of the piston rod 2 is inserted into the connecting groove and is locked by bolt connection.

[0061] Specifically, the connecting ring 12 is made of high-strength metal material and combined with a multi-point bolt locking design to ensure that it can withstand the high-strength tension, thrust and torque generated during the operation of the hydraulic system to avoid failure or breakage due to overload.

[0062] Specifically, the connecting ring 12 is an extension component of the piston rod 2, and its main function is to achieve the connection between the piston rod and an external device or load; through the adaptive design of the connecting ring 12 and the external device, the driving force of the hydraulic cylinder can be effectively transmitted.

[0063] Specifically, insert the end of the piston rod 2 into the connecting groove at the end of the connecting ring 12 to ensure that the piston rod is completely in contact with the inner wall of the connecting groove; align the bolt holes when plugging in to ensure smooth subsequent bolt installation; then use high-strength bolts to firmly lock the piston rod 2 and the connecting ring 12; use a torque wrench to tighten the bolts evenly when connecting to avoid unstable connection due to uneven force.

[0064] Specifically, after the bolts are installed, anti-loosening glue can be applied to the threads to further enhance the reliability of the bolt connection.

[0065] As a specific implementation, a connecting sleeve 13 is also sleeved on the piston rod 2 ; the connecting sleeve 13 is arranged at the entrance of the inner cavity of the cylinder body 1 , and is used to abut against the piston head of the piston rod 2 .

[0066] Specifically, the connecting sleeve 13 is an annular cylindrical component, which is sleeved on the outside of the piston rod 2 and is arranged at the inner cavity entrance of the cylinder body 1; before the piston rod 2 is inserted into the cylinder body 1, the connecting sleeve 13 is first inserted from one end of the piston rod and slid to the predetermined position of the piston rod to ensure that the connecting sleeve fits tightly with the piston head; then the piston rod 2 equipped with the connecting sleeve is inserted into the inner cavity of the cylinder body 1, and the connecting sleeve 13 is fixed at the supporting position at the inner cavity entrance of the cylinder body, so that the connecting sleeve 13 and the inner cavity entrance of the cylinder body 1 form a certain sealing structure, which can effectively prevent the hydraulic oil from leaking from the inner cavity and improve the working efficiency and safety of the hydraulic system; after the installation is completed, check whether the connecting sleeve 13 is stably installed on the piston rod 2 and whether it is accurately positioned with the inner cavity entrance of the cylinder body 1, so as to ensure that the connecting sleeve can normally withstand the force of the piston rod.

[0067] Specifically, the connecting sleeve 13 is made of high-strength metal material (such as alloy steel, stainless steel or corrosion-resistant aluminum alloy), has the properties of high pressure resistance, corrosion resistance and wear resistance, and is suitable for the harsh environment of marine engineering.

[0068] As an embodiment, a sealing device is provided on the outside of the rotary joint, and the sealing device includes an O-ring, a V-ring or a friction sealing ring. These sealing elements can effectively maintain the pressure of the hydraulic system and ensure the normal operation of the cylinder.

[0069] When the hydraulic system is working, the hydraulic oil is transmitted from the oil tank through the pipeline to the rotary joint. The hydraulic energy is usually provided by a booster cylinder, a hydraulic cylinder or an oil pump. The oil flows through the inner cavity of the rotary joint. As the rotating parts move relative to each other, the sealing device plays an important sealing role to prevent oil leakage.

[0070] As an embodiment, the material of the sealing device is generally a rubber or polyurethane material that is resistant to high pressure, high temperature and corrosion.

[0071] Specifically, in hydraulic systems, sealing devices play a vital role, especially in key parts such as rotating joints. In order to ensure the long-term stability and reliability of the sealing effect, the material of the sealing device must have excellent properties of high pressure resistance, high temperature resistance and corrosion resistance. Commonly used sealing materials include high pressure resistance, high temperature resistance and corrosion resistance rubber materials and polyurethane materials. These materials can withstand extreme working conditions in hydraulic systems and ensure the normal operation of hydraulic systems.

[0072] Example 2

[0073] like Figure 1-6 As shown, this embodiment discloses a marine engineering equipment equipped with a pile-turning cylinder, the equipment includes a clamping device, the clamping device is driven by the pile-turning cylinder to clamp or separate, the clamping device includes a driving arm 14 and a clamping claw 15, the clamping claw 15 is connected to the end of the driving arm 14 and connected to the pile-turning cylinder;

[0074] The driving arm 14 includes a first arm 1401, a second arm 1402 and a third arm 1403. The first arm 1401 is connected to the second arm 1402 via a first rotating joint 1404, and the second arm 1402 is connected to the third arm 1403 via a second rotating joint 1405. Rotating motors are provided in the first rotating joint 1404 and the second rotating joint 1405, and the driving arm 14 can be freely adjusted in angle by driving the rotating motors.

[0075] During operation, check whether the oil circuit connection of the pile turning cylinder and the hydraulic system is unobstructed to ensure that the hydraulic oil is sufficient and leak-free; confirm that the clamping device (driving arm 14 and clamping claw 15) is in the initial position, and the angle of each rotating joint (1404, 1405) is adjusted to the standard starting state;

[0076] Then start the rotary motor in the rotary joint, adjust the angle of the driving arm 14, and make the clamping claw 15 align with the target pile body, ready to perform the clamping action;

[0077] The hydraulic system of the pile turning cylinder is started, thereby driving the movable joint 1503 to extend and retract upward, so that the claw body 1501 rotates around the base 1502 to drive the clamping claw 15 to open and close and clamp the target pile body, so that the arc-shaped claw body of the clamping claw is closed; the pile body is firmly grasped through the anti-slip teeth on the clamping claw 15 to ensure stable clamping; the clamping force is adjusted through the hydraulic system according to the shape and material of the pile body to avoid damage to the pile body during the clamping process, while ensuring safety during pile turning;

[0078] When the driving arm angle adjustment is required, the rotary motor in the first rotary joint 1404 is started to adjust the angle of the first arm 1401 so that the pile body initially enters the flipping position; the rotary motor in the second rotary joint 1405 is started to cooperate with the second arm 1402 and the third arm 1403 to achieve multi-degree-of-freedom angle adjustment and complete the pile flipping action; at the same time, the hydraulic power provided by the pile flipping cylinder is used to push the clamping claw 15 to maintain the clamping state to ensure the stable position of the pile body during the flipping process;

[0079] After the pile turning is completed, the hydraulic system of the pile turning cylinder is driven in reverse to open the clamping claws 15 and release the target pile body; and it is confirmed that the pile body is completely separated from the clamping device.

[0080] Specifically, the driving arm 14 includes three arm sections: a first arm 1401, a second arm 1402 and a third arm 1403; each arm section is connected by a rotary joint (1404, 1405) to form an adjustable structure with multiple degrees of freedom; the first rotary joint 1404 and the second rotary joint 1405 are built with a rotary motor to provide high-precision angle adjustment capability;

[0081] The clamping claw 15 is composed of a number of arc-shaped claws, and the end of the claws is provided with anti-slip teeth to enhance the clamping effect; the clamping claw is connected to the end of the driving arm 14 through a movable joint, and is connected to the hydraulic system of the pile turning cylinder, and the opening and closing of the clamping claw is realized by hydraulic drive; and each rotating joint is equipped with a high-strength bearing and a sealing device to ensure stable operation under high load and harsh environment;

[0082] The built-in rotary motor can provide high-precision angle adjustment and monitor and adjust the angle of each joint in real time through the control system; the real-time data can be fed back to the control system through the sensors in the rotary joint (such as angle encoders) to ensure the accuracy and stability of the pile turning process.

[0083] As a specific implementation, the clamping claw 15 includes a plurality of claw bodies 1501 and a base 1502; each claw body 1501 is connected to the base 1502 via a movable joint 1503, and can freely open and close, thereby achieving clamping of workpieces of different shapes.

[0084] Specifically, the base 1502 is fixed to the end of the driving arm 14 by bolts or welding to ensure the stability of the base;

[0085] The claw body 1501 of the clamping claw 15 is in an open state through the movable joint 1503, and can be aligned with the position and shape of the target workpiece; the hydraulic system is started to apply moving pressure to the movable joint 1503, driving the claw body 1501 to rotate around the movable joint and gradually close; the arc structure and anti-slip tooth pattern at the end of the claw body can fit tightly against the surface of the workpiece to achieve stable clamping, adapt to the clamping needs of workpieces of different shapes, and ensure that the workpiece will not slip or loosen during the flipping or clamping process.

[0086] As a specific implementation, the claw body 1501 has an arc-shaped structure, and its end is designed with anti-slip teeth to increase the clamping force; the claw body 1501 is made of high-strength, wear-resistant metal material, and its surface is specially coated to prevent corrosion.

[0087] Specifically, the claw body 1501 is made of high-strength metal materials, such as alloy steel, stainless steel or titanium alloy, to meet the strength and durability requirements under high-load conditions;

[0088] A dense anti-corrosion coating can be formed on the surface of the claw to prevent seawater and salt spray from corroding the metal;

[0089] The claw body can also adopt ceramic or polytetrafluoroethylene (PTFE) coating to enhance the wear resistance of the surface and extend the service life; coating the anti-slip coating of high friction coefficient material on the tooth pattern part can further improve the clamping stability.

[0090] Specifically, when the clamping claw is closed, the structure of the arc-shaped claw body can fit tightly against the surface of the workpiece, provide additional friction through the anti-slip tooth pattern, and firmly grasp the workpiece; the coated surface of the claw body can not only protect the surface of the workpiece from damage caused by direct metal contact, but also prevent wear caused by friction.

[0091] As a specific implementation method, the claw body 1501 is movably connected to the base 1502 through a bearing, the movable joint 1503 is slidably connected to the base 1502, and the end of the movable joint 1503 is movably connected to the claw body 1501. The pile turning cylinder drives the movable joint 1503 to slide along the height of the base 1502 and drives the claw body 1501 to rotate around the base 1502 to drive the clamping claw 15 to open and close.

[0092] Specifically, the claw body 1501 is movably connected to the base 1502 through a bearing and can rotate around the bearing; the claw body is an arc-shaped structure, and its end is designed with anti-slip teeth to increase the clamping force and ensure the stability of the target workpiece during the clamping process; the base 1502 is the supporting component of the clamping claw, which is fixedly connected to the end of the driving arm 14 to provide a movable fulcrum and a sliding track for the claw body 1501.

[0093] Specifically, the claw body 1501 is connected to the base 1502 via a bearing, providing a reliable rotation fulcrum; at the same time, the movable joint 1503 is slidably connected to the base, so that the clamping claw can flexibly adjust the opening and closing angle to meet the clamping requirements of workpieces of different shapes.

[0094] Example 3

[0095] like Figure 1-6 As shown, this embodiment discloses a pile turning method for marine engineering equipment, and the pile turning method for marine engineering equipment includes the following steps:

[0096] S1: Perform a preliminary inspection to ensure that the pile turning cylinder is installed in place and is correctly connected to the driving arm 14 and the clamping claw 15 of the clamping device; check the oil circuit connectivity of the hydraulic system, including the rod chamber, the rodless chamber and the pressure relief oil circuit, to ensure that the hydraulic oil is sufficient and there is no leakage; use the clamping claw 15 of the clamping device to adjust the opening and closing state, clamp or fix the target pile body, and ensure that the anti-slip teeth of the claw body 1501 are in full contact with the surface of the pile body to avoid loosening or slipping during the pile turning process;

[0097] S2: Start the hydraulic system, drive the movable joint 1503 to slide along the height of the base 1502, and drive the claw body 1501 to close the clamping claw 15; adjust the opening and closing angle of the clamping claw 15 according to the shape and size of the target pile body, so that the arc structure of the claw body 1501 is completely fitted with the pile body, and ensure that the clamping force of the clamping device is sufficient by adjusting the pressure of the hydraulic oil, and confirm that the claw body 1501 has clamped the target pile body;

[0098] S3: Start the rotary motors in the first rotary joint 1404 and the second rotary joint 1405, adjust the angle of the driving arm 14, and flip the pile body at the set path and angle; according to the operation requirements, the angles of the first arm 1401, the second arm 1402 and the third arm 1403 can be adjusted to ensure the accuracy of the pile turning action;

[0099] S4: The hydraulic system adjusts the hydraulic pressure of the oil cylinder in real time to drive the piston rod 2 to reciprocate to provide the power required for pile turning; according to the progress of pile turning, the oil is quickly unloaded through the pressure relief pipe 7 and the pressure relief hole 9 to ensure the stability and controllability of the pile turning action;

[0100] S5: After the pile turning is completed, stop the rotating motor, adjust the driving arm 14 to the initial position, reversely operate the movable joint 1503 through the hydraulic system, drive the clamping claw 15 to loosen the pile body, and ensure the safe release of the pile body; then control the pile turning cylinder to return the piston rod 2 to ensure that the rod chamber and the rodless chamber are in the initial pressure balance state; finally, check whether the pressure relief oil circuit has completed the pressure relief to ensure that the equipment is in standby mode.

[0101] Specifically, the movable joint 1503 is driven by the hydraulic system to slide along the height of the base 1502, and the claw body 1501 can quickly open and close the operation, thereby improving the efficiency of clamping and releasing; the rotating motor in the rotating joint (1404, 1405) provides precise angle adjustment, and cooperates with the power output of the hydraulic cylinder to achieve rapid response of the pile turning action; it can realize efficient, accurate and safe pile turning operations in marine engineering, and is an innovative technical solution with broad application prospects.

[0102] As an embodiment, when multiple pile turning operations are required, step S4 is repeated, and before each pile turning operation, a quick check is performed on the clamping device and the pile turning cylinder to ensure the normal operation of the equipment.

[0103] Specifically, the present invention supports multiple continuous pile turning operations. By repeatedly executing step S4 (the hydraulic system adjusts the hydraulic pressure of the cylinder in real time to drive the piston rod to reciprocate), the equipment can quickly enter the next pile turning task without complicated adjustments and preparations, thereby greatly improving work efficiency. The process of repeated operations is simple and efficient, which reduces the operation time and realizes rapid turnover of pile turning tasks.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pile turning cylinder, characterized in that: It comprises a piston rod (2) arranged in the inner cavity of a cylinder body (1), the piston rod (2) divides the inner cavity of the cylinder body (1) into a rod cavity and a rodless cavity, the two cavities respectively contain hydraulic oil to drive the piston to move; the rod cavity and the rodless cavity are respectively connected to a first oil port (5) and a second oil port (6) through a rod pipeline (3) and a rodless pipeline (4); The second oil port (6) is also connected to the pressure relief oil port (8) via a pressure relief pipe (7), and a plurality of pressure relief holes (9) are provided on the outer periphery of the cylinder body (1); the pressure relief holes (9) are all connected to the pressure relief oil port (8) for rapid oil unloading.

2. The pile turning cylinder according to claim 1, characterized in that: The cylinder body (1) is provided with an oil port groove (10), the rod pipeline (3) and the rodless pipeline (4) are arranged in the cylinder body (1), the first oil port (5) and the second oil port (6) are arranged in the oil port groove (10), and the rod pipeline (3) is also connected to the pressure measuring port (11).

3. The pile turning cylinder according to claim 1, characterized in that: The end of the piston rod (2) is also provided with a connecting ring (12), the end of the connecting ring (12) is provided with a connecting groove, the end of the piston rod (2) is inserted into the connecting groove and locked by bolt connection.

4. The pile turning cylinder according to claim 1, characterized in that: The piston rod (2) is also sleeved with a connecting sleeve (13); the connecting sleeve (13) is arranged at the entrance of the inner cavity of the cylinder body (1) and is used to abut against the piston head of the piston rod (2).

5. A marine engineering equipment equipped with the pile turning cylinder according to any one of claims 1 to 4, characterized in that: The marine engineering equipment comprises a clamping device, the clamping device is driven by a pile-turning cylinder to clamp or separate, the clamping device comprises a driving arm (14) and a clamping claw (15), the clamping claw (15) is connected to the end of the driving arm (14) and is connected to the pile-turning cylinder; The driving arm (14) comprises a first arm (1401), a second arm (1402) and a third arm (1403); the first arm (1401) is connected to the second arm (1402) via a first rotating joint (1404); the second arm (1402) is connected to the third arm (1403) via a second rotating joint (1405); rotating motors are provided in the first rotating joint (1404) and the second rotating joint (1405); and the driving arm (14) can be freely adjusted in angle by driving the rotating motors.

6. The marine engineering equipment according to claim 5, characterized in that: The clamping claw (15) comprises a plurality of claw bodies (1501) and a base (1502); each claw body (1501) is connected to the base (1502) via a movable joint (1503) and can freely open and close, thereby achieving clamping of workpieces of different shapes.

7. The marine engineering equipment according to claim 5, characterized in that: The claw body (1501) is of an arc-shaped structure, and its end is designed with anti-slip teeth to increase the clamping force; the claw body (1501) is made of high-strength, wear-resistant metal material, and its surface is specially coated to prevent corrosion.

8. The marine engineering equipment according to claim 5, characterized in that: The claw body (1501) is movably connected to the base (1502) via a bearing, the movable joint (1503) is slidably connected to the base (1502), and the end of the movable joint (1503) is movably connected to the claw body (1501). The pile-turning cylinder drives the movable joint (1503) to slide along the height of the base (1502) and drives the claw body (1501) to rotate around the base (1502) to drive the clamping claw (15) to open and close.

9. A method for turning over piles for marine engineering equipment according to any one of claims 6 to 8, characterized in that: The pile turning method for marine engineering equipment comprises the following steps: S1: Use the clamping claw (15) of the clamping device to adjust the opening and closing state to clamp or fix the target pile body, ensuring that the anti-slip teeth of the claw body (1501) are in full contact with the surface of the pile body to avoid loosening or slipping during the pile turning process; S2: Start the hydraulic system, drive the movable joint (1503) to slide along the height of the base (1502), and drive the claw body (1501) to close the clamping claw (15); adjust the opening and closing angle of the clamping claw (15) according to the shape and size of the target pile body, so that the arc structure of the claw body (1501) fits the pile body, and ensure that the clamping force of the clamping device is sufficient by adjusting the pressure of the hydraulic oil, and confirm that the claw body (1501) has clamped the target pile body; S3: Start the rotary motors in the first rotary joint (1404) and the second rotary joint (1405), adjust the angle of the driving arm (14), and flip the pile body at a set path and angle; according to the operation requirements, the angles of the first arm (1401), the second arm (1402) and the third arm (1403) can be adjusted to ensure the accuracy of the pile flipping action; S4: The hydraulic system adjusts the hydraulic pressure of the oil cylinder in real time to drive the piston rod (2) to reciprocate to provide the power required for pile turning; according to the progress of pile turning, the oil is quickly unloaded through the pressure relief pipe (7) and the pressure relief hole (9) to ensure the stability and controllability of the pile turning action; S5: After the pile turning is completed, the rotating motor is stopped, the driving arm (14) is adjusted to the initial position, and the movable joint (1503) is operated in reverse through the hydraulic system to drive the clamping claw (15) to loosen the pile body to ensure the safe release of the pile body; then the pile turning cylinder is controlled to return the piston rod (2) to its original position to ensure that the rod chamber and the rodless chamber are in the initial pressure balance state; finally, check whether the pressure relief oil circuit has completed the pressure relief to ensure that the equipment is in the standby state.

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