Ocean impact oil cylinder and piling equipment and piling method thereof

Abstract

The invention relates to the technical field of ocean engineering equipment, and discloses an ocean impact oil cylinder and pile driving equipment and a pile driving method thereof. When extending impact is needed, a hydraulic control mechanism is started firstly, hydraulic oil enters a rodless cavity through a control valve set, and the high-pressure hydraulic oil in the rodless cavity pushes a piston rod to extend outwards; power extending out of the piston rod is transmitted to the connecting lug ring, impact force is transmitted to the hammer body through the connecting lug ring and finally applied to the pile head, and the pile body is driven to enter a foundation; when the energy accumulator needs to be pressurized and impacted, the hydraulic control mechanism is firstly started, the switching valve between the energy accumulator and the impact oil cylinder is opened, and high-pressure hydraulic oil in the energy accumulator is quickly released to the rodless cavity through the collecting pipeline; the rodless cavity generates strong pressure under the combined action of high-pressure oil of the energy accumulator and a hydraulic system, the piston rod is pushed to rapidly stretch out to generate larger impact force, the impact force is transmitted to the hammer body and the pile head, and the high-strength impact hammer is suitable for complex foundation conditions or high-strength operation requirements.

Description

Technical Field

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

[0002] In marine engineering, pile foundation operation is a key process in the construction of important infrastructure such as offshore platforms, submarine tunnels, and port terminals. As the core equipment in this field, hydraulic pile hammers are widely used in a variety of projects such as driving and sinking piles and installing structures. Hydraulic pile hammers provide strong impact force to effectively push piles deep into the ground or the seabed, thus providing technical support for the smooth implementation of marine engineering.

[0003] Hydraulic pile hammers have important applications in many fields and engineering scenarios, including infrastructure construction (such as docks, bridges, highways, etc.), dredging projects (such as harbors, canals, underwater tunnels, etc.), demolition projects (such as demolition of old buildings, docks and bridges, etc.), and the petrochemical industry (such as the installation of submarine pipelines). Especially in marine engineering, hydraulic pile hammers can effectively cope with complex submarine environments and carry out deep-sea pile foundation construction and the construction, maintenance and renovation of marine infrastructure such as ports and docks.

[0004] However, there are some limitations when using traditional hydraulic pile hammers in marine environments. Specifically, the hydraulic system and pile hammer are easily affected by the external environment, especially when working at sea, where uncertain factors such as sea breeze and waves have a greater impact on the working environment. Especially when the waves are large, the pile hammer may have problems such as shaking or tubing entanglement, which will directly lead to the failure of the hydraulic system, thereby affecting the operating accuracy and work safety of the pile hammer.

[0005] The national application number is 202210321229.X, which is a kind of oil cylinder, breaker hammer and pile hammer. The technology adopts a mixed medium working mode of gas and hydraulic oil. Specifically, the oil cylinder of the equipment is designed to form a fluid channel for accommodating hydraulic oil between the outer cylinder barrel and the inner cylinder barrel, wherein the first working chamber uses gas as the working medium, and the second working chamber uses hydraulic oil. By adjusting the pressure and flow direction of the hydraulic oil, the hydraulic shock of the second working chamber can be effectively buffered, thereby reducing the damage of the hydraulic shock to the oil cylinder and hydraulic components and improving the working efficiency of the equipment.

[0006] This design simplifies the complex structure of the traditional hydraulic system, solves the problem of pile hammer shaking caused by waves, and effectively improves the reliability and stability of the equipment. However, although this technology has solved the problem of hydraulic system complexity to a certain extent, there are still some structural limitations; due to the limitations of the integrated design of the cylinder, breaker and pile hammer, the power of the cylinder is greatly affected, resulting in relatively low pile driving efficiency. In addition, there is still room for improvement in the optimization of hydraulic systems and impact pile driving, especially in deep-sea environments, where equipment requires higher power and stability to meet the needs of difficult operations such as deep-sea pile foundation construction.

[0007] Therefore, a new hydraulic pile hammer impact cylinder and its equipment are urgently needed to further improve its application performance in marine engineering by optimizing the structural design and working method. Especially in the marine environment, how to improve the impact force and stability of the equipment, reduce the interference of waves, and improve the efficiency of pile driving are still the focus of current technical improvements. Summary of the invention

[0008] In order to solve the above-mentioned problems in the prior art, the present invention provides a marine impact cylinder;

[0009] Another object of the present invention is to provide a pile driving device equipped with a marine impact cylinder;

[0010] Another object of the present invention is to provide a piling method using a piling device.

[0011] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0012] A marine impact oil 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 respectively connected to a plurality of first oil ports and a second oil port, the plurality of first oil ports and the second oil ports are respectively arranged around the cylinder body, and the plurality of second oil ports are connected to the rodless cavity through a collecting pipe;

[0013] The telescopic part of the piston rod is sleeved with a telescopic protective cover, which is arranged between the piston rod and the cylinder body and telescopes along with the piston rod; the impact oil cylinder is also provided with a connecting earring.

[0014] Furthermore, the cylinder body end and the piston rod end are detachably provided with connecting earrings, and the connecting earrings are separately connected to the piston rod end portion via a connecting sleeve.

[0015] Furthermore, a rotating bearing is embedded in the connecting earring, and a hydraulic oil channel is provided between the connecting earring and the rotating bearing, and the hydraulic oil channel is connected to a third oil port provided outside the connecting earring.

[0016] Preferably, the connecting earring is embedded with a rotating bearing to allow flexible connection or rotation with other components, to reduce friction caused by vibration or rotation of the equipment, and to ensure the stability and durability of the long-term operation of the equipment.

[0017] Furthermore, the second oil port and the collecting pipe are respectively connected to pressure measuring holes, and the pressure measuring holes are arranged outside the cylinder body.

[0018] A pile driving device equipped with a marine impact cylinder, the device comprises an impact hammer, the impact hammer is driven by the impact cylinder to repeatedly extend and retract, the impact hammer comprises a hammer body, a guide frame and a hydraulic control mechanism; the impact cylinder is arranged in the inner cavity of the guide frame, the hydraulic control mechanism is connected to the impact cylinder, and is used to push the piston rod connected inside to retract and retract; the impact cylinder is connected to the hammer body, and the impact force is transmitted to the hammer body through the piston rod;

[0019] The hydraulic control mechanism is composed of a control valve group and a plurality of high-pressure oil pipes. The control valve group is respectively connected to the first oil port and the second oil port of the impact cylinder through the plurality of high-pressure oil pipes to control the impact frequency and strength of the hammer by controlling the hydraulic oil flow pressure.

[0020] Furthermore, the control valve group is also connected to an accumulator through a high-pressure oil pipe. The accumulator is also connected to the first oil port and the second oil port of the impact cylinder through the high-pressure oil pipe, so that the stored hydraulic oil can be quickly released to increase the power of the impact hammer.

[0021] Furthermore, a switch valve is provided between the accumulator and the first oil port and the second oil port of the impact cylinder, and the high-pressure oil pipe of the accumulator is connected to the first oil port and the second oil port of the impact cylinder through the switch valve.

[0022] Furthermore, a groove is embedded in the bottom of the hammer body, and the groove can be replaceably embedded with different impact pile heads.

[0023] A piling method of a piling device, the piling method of the piling device comprising the following steps:

[0024] S1: Install the impact cylinder into the inner cavity of the guide frame of the equipment, ensure that the piston rod of the impact cylinder is firmly connected to the hammer body, and connect it to the external fixed structure through the connecting earring; according to the construction requirements, embed the groove at the bottom of the hammer body into the pile head, and select a suitable impact pile head according to the shape of the pile head to ensure that the pile head and the hammer body fit accurately;

[0025] S2: Start the hydraulic control mechanism to supply hydraulic oil to the first and second oil ports of the impact cylinder through the control valve group; control the flow and pressure of the hydraulic oil through the high-pressure oil pipe to push the piston rod to extend and retract, driving the hammer to complete the impact action;

[0026] S3: When the hydraulic oil enters the rodless chamber of the impact cylinder, it pushes the piston rod outward, and the impact force is transmitted to the hammer body through the piston rod. The hammer applies the impact force to the pile head, so that the pile body is driven into the foundation;

[0027] S4: When the hydraulic oil enters the rod chamber of the impact cylinder, it pushes the piston rod to retract inward, completing the reset and preparing for the next impact; the hydraulic control mechanism can control the impact frequency and impact force by adjusting the hydraulic oil flow and pressure in real time to adapt to different soil conditions;

[0028] S5: Repeat S3 and S4 until the pile is driven into the predetermined depth. During the impact process, the telescopic protective cover of the piston rod moves with the piston rod to prevent external impurities from entering the inner cavity of the oil cylinder, ensuring the stable operation of the equipment.

[0029] S6: When the pile reaches the designed depth, stop the hydraulic system and remove the connection between the impact cylinder and the hammer.

[0030] Furthermore, during S5, when the impact force needs to be increased, the accumulator can quickly release the stored hydraulic oil to the first oil port and the second oil port of the impact cylinder through the high-pressure oil pipe, thereby providing additional power during the impact process and improving the impact efficiency;

[0031] The switch valve between the accumulator and the impact cylinder switches on and off according to work requirements to ensure the stability of the hydraulic system pressure and avoid the impact of impact force fluctuations on the system.

[0032] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0033] ① The present invention accurately controls the oil flow and pressure of the first and second oil ports of the oil cylinder through a hydraulic control mechanism, thereby realizing adjustable control of the impact frequency and force of the impact hammer; the impact cylinder can flexibly adjust the impact force and frequency according to different soil conditions and construction requirements, thereby ensuring the high efficiency and stability of the impact process.

[0034] ② The impact cylinder uses a telescopic protective cover to protect the piston rod, which effectively prevents external impurities from entering the inner cavity of the cylinder, thereby reducing wear or failure caused by contaminants and extending the service life of the equipment; in addition, the rotating bearing embedded in the connecting earring allows the piston rod to be flexibly connected or rotated with other components, reducing the friction caused by equipment vibration or rotation, thereby improving the stability and durability of the equipment.

[0035] ③ The present invention stores hydraulic oil by setting an accumulator, and can quickly release the stored oil through a high-pressure oil pipe when needed, thereby increasing the power of the impact hammer and improving the impact efficiency; the configuration of the accumulator provides additional power for the equipment during the impact process, especially when a large impact force is required, which is of great significance to improving construction efficiency and coping with complex construction environments.

[0036] ④ The hydraulic control system of the present invention can accurately control the flow and pressure of hydraulic oil through the coordinated use of the control valve group and the high-pressure oil pipe, realize the telescopic movement of the impact cylinder piston rod, and thus accurately control the impact force and frequency of the hammer; it can effectively ensure the high efficiency of the piling operation, and can be adjusted according to different soil conditions, thereby improving work efficiency.

[0037] ⑤ The piling method of the present invention can be adjusted according to actual construction needs. For example, during the impact process, the impact force can be increased by adjusting the oil flow and pressure of the hydraulic system, or by quickly releasing the stored hydraulic oil through the accumulator, so as to adapt to factors such as different soil layers and pile head shapes; making the present invention widely applicable in various applications such as marine engineering and piling. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 It is a schematic diagram of the structure of the marine impact cylinder;

[0040] Figure 2 It is a schematic diagram of the piston rod retraction of the marine impact cylinder;

[0041] Figure 3 It is a schematic diagram of the piston rod extension of the marine impact cylinder;

[0042] Figure 4 It is a first structural schematic diagram of a pile driving device equipped with an impact cylinder;

[0043] Figure 5 is a second structural schematic diagram of a pile driving device equipped with an impact cylinder;

[0044] Figure 6 is a cross-sectional view of a pile driving device equipped with an impact cylinder;

[0045] Figure 7 It is a structural diagram of the connection between the impact cylinder and the equipment;

[0046] Figure 8 It is an enlarged schematic diagram of A.

[0047] The reference numerals are as follows:

[0048] 1. Cylinder body; 2. Piston rod; 3. First oil port; 4. Second oil port; 5. Collecting pipe; 6. Telescopic protective cover; 7. Connecting earring; 8. Connecting sleeve; 9. Pressure measuring hole; 10. Third oil port; 11. Hammer; 12. Guide frame; 13. Hydraulic control mechanism; 1301. Control valve group; 1302. High-pressure oil pipe; 14. Accumulator. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] Example 1

[0052] like Figure 1-8 As shown, this embodiment discloses a marine impact 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 respectively connected to a plurality of first oil ports 3 and second oil ports 4, the plurality of first oil ports 3 and second oil ports 4 are respectively arranged around the outside of the cylinder body 1, and the plurality of second oil ports 4 are connected to the rodless cavity through a collecting pipe 5;

[0053] The telescopic part of the piston rod 2 is sleeved with a telescopic protective cover 6, which is arranged between the piston rod 2 and the cylinder body 1 and telescopes along with the piston rod 2; the impact cylinder is also provided with a connecting earring 7.

[0054] When working, the hydraulic control mechanism 13 provides high-pressure hydraulic oil to the rodless chamber and discharges the hydraulic oil in the rod chamber at the same time; the flow rate and pressure are adjusted through the hydraulic circuit connected by the first oil port 3 and the second oil port 4;

[0055] The hydraulic oil enters the rodless cavity through the collecting pipe 5, and the pressure in the rodless cavity pushes the piston rod 2 to extend outward; the extension of the piston rod 2 drives the connecting earring 7 to transmit the impact force, and the impact force acts on the pile body through the hammer body 11 and the pile head;

[0056] Then the hydraulic control mechanism 13 switches direction, and the high-pressure hydraulic oil enters the rod chamber through the first oil port 3, pushing the piston rod 2 to retract inward, completing the reset and preparing for the next impact action;

[0057] Then the hydraulic control mechanism 13 switches direction, and the high-pressure hydraulic oil enters the rod chamber through the first oil port 3, pushing the piston rod 2 to retract inward, completing the reset and preparing for the next impact action.

[0058] When it is necessary to extend the impact, the hydraulic control mechanism 13 is started first, and the hydraulic oil enters the rodless chamber through the control valve group 1301, and the hydraulic oil in the rod chamber is discharged at the same time. The high-pressure hydraulic oil in the rodless chamber pushes the piston rod to extend outward, and the power of the piston rod 2 extending is transmitted to the connecting earring 7, and the impact force is transmitted to the hammer body 11 through the connecting earring 7, and finally applied to the pile head, driving the pile body into the foundation.

[0059] When the accumulator 14 is required to pressurize and impact, the hydraulic control mechanism 13 is first started to introduce the hydraulic oil into the accumulator 14 for storage, while ensuring that the rodless chamber maintains a certain initial pressure; the switch valve between the accumulator 14 and the impact cylinder is opened, and the high-pressure hydraulic oil in the accumulator 14 is quickly released to the rodless chamber through the collecting pipe 5; the rodless chamber generates a strong pressure under the combined action of the high-pressure oil in the accumulator 14 and the hydraulic system, pushing the piston rod to extend rapidly; because the accumulator 14 provides additional power, the piston rod 2 generates a greater impact force when it is extended, which is transmitted to the hammer body 11 and the pile head, adapting to complex foundation conditions or high-intensity operation requirements.

[0060] As a specific implementation, the ends of the cylinder body 1 and the piston rod 2 are detachably provided with connecting earrings 7, and the connecting earrings 7 are separately connected to the end of the piston rod 2 through a connecting sleeve 8;

[0061] A rotary bearing is embedded in the connecting earring 7 , and a hydraulic oil passage is provided between the connecting earring 7 and the rotary bearing. The hydraulic oil passage is communicated with a third oil port 10 provided outside the connecting earring 7 .

[0062] Specifically, the connecting earring 7 is separately connected to the end of the piston rod 2 through the connecting sleeve 8. The detachable design of the connecting sleeve 8 facilitates the quick installation or replacement of the connecting earring 7. The hydraulic oil channel is arranged between the rotating bearing and the connecting earring 7, and is connected to the hydraulic system through the third oil port 10 outside the earring to ensure the lubrication and stable operation of the rotating bearing. The hydraulic oil can also lubricate the rotating bearing, reduce the wear of the bearing, and extend its service life.

[0063] When the piston rod 2 is extended and retracted under hydraulic drive, the impact force is transmitted to the external component (such as the hammer body 11 or other load-bearing structure) through the connecting sleeve 8 and the connecting earring 7; the rotating bearing provides a flexible rotational connection to reduce the friction and impact force deflection at the connection between the piston rod 2 and the external component.

[0064] This design ensures the stability and adaptability of the impact cylinder in high-frequency and high-intensity operations. At the same time, the innovative design of the rotating bearing and hydraulic lubrication significantly improves the equipment life and efficiency, providing a superior solution for complex impact operations in marine engineering.

[0065] As a specific implementation, the second oil port 4 and the collecting pipe 5 are respectively connected to a pressure measuring hole 9 , and the pressure measuring hole 9 is arranged outside the cylinder body 1 .

[0066] Specifically, the pressure measuring hole 9 is respectively connected to the second oil port 4 and the collecting pipe 5 and is connected to a pressure measuring device to transmit the pressure signal of the hydraulic oil to the pressure measuring device or the display device; the pressure measuring hole 9 is arranged outside the cylinder body 1 for easy installation and maintenance.

[0067] When the hydraulic system starts to supply hydraulic oil to the rodless chamber, the hydraulic oil enters the rodless chamber through the second oil port 4, pushing the piston rod 2 to extend; when the hydraulic oil flows through the collecting pipe 5, the pressure change is transmitted to the pressure measuring device through the pressure measuring hole 9;

[0068] The pressure measuring device collects the pressure changes of the hydraulic oil in the second oil port 4 and the collecting pipe 5, and displays or transmits them to the hydraulic control mechanism 13 in real time; the hydraulic control mechanism 13 dynamically adjusts the flow and pressure of the hydraulic oil according to the pressure measurement data to ensure accurate control of the impact force; the subsequent pressure measurement data can be recorded as a log for subsequent analysis of the operating status of the hydraulic system, optimization of equipment operation or fault diagnosis.

[0069] If the data collected by the pressure measuring hole 9 exceeds the preset range (such as too high or too low), the pressure measuring equipment sends an alarm signal to the hydraulic control mechanism 13, prompting the operator to check the hydraulic system in time; it effectively improves the impact accuracy and adaptability of the equipment, and also significantly improves the safety and life of the equipment operation, providing an efficient and reliable solution for complex impact operations in marine engineering.

[0070] Example 2

[0071] like Figure 1-8 As shown, this embodiment discloses a marine impact cylinder piling equipment, the equipment includes an impact hammer, the impact hammer is driven by the impact cylinder to repeatedly extend and retract, the impact hammer includes a hammer body 11, a guide frame 12 and a hydraulic control mechanism 13; the impact cylinder is arranged in the inner cavity of the guide frame 12, the hydraulic control mechanism 13 is connected to the impact cylinder, and is used to push the piston rod 2 connected inside to retract and retract; the impact cylinder is connected to the hammer body 11, and the impact force is transmitted to the hammer body 11 through the piston rod 2;

[0072] The hydraulic control mechanism 13 is composed of a control valve group 1301 and a plurality of high-pressure oil pipes 1302. The control valve group 1301 is respectively connected to the first oil port 3 and the second oil port 4 of the impact cylinder through the plurality of high-pressure oil pipes 1302 to control the impact frequency and strength of the hammer 11 by controlling the hydraulic oil flow pressure.

[0073] Specifically, the impact cylinder is installed in the inner cavity of the guide frame 12 to ensure that the cylinder is stably connected to the guide frame 12 and the impact hammer body; then the impact cylinder is installed in the inner cavity of the guide frame 12 to ensure that the cylinder is stably connected to the guide frame 12 and the hammer body 11; then the accumulator 14 is connected to the hydraulic control mechanism 13 through the high-pressure oil pipe 1302, and is connected to the first oil port 3 and the second oil port 4 of the impact cylinder through the switch valve to ensure that the accumulator 14 can release the hydraulic oil when needed, and then according to the work needs, the impact pile head is installed in the groove at the bottom of the hammer body 11 to ensure that the hammer body 11 can be freely extended and retracted.

[0074] When hydraulic control is required for impact, the hydraulic control mechanism 13 is first turned on, and the control valve group 1301 adjusts the hydraulic oil flow and pressure as needed. The first oil port 3 and the second oil port 4 of the impact cylinder are respectively connected through the high-pressure oil pipe 1302, and hydraulic oil is started to be injected into the impact cylinder; when the hydraulic oil enters the impact cylinder, the piston rod 2 is pushed to produce a telescopic movement, and the impact force is transmitted to the hammer body 11. At this time, the impact hammer starts to perform repeated impact actions; the control valve group 1301 adjusts the oil flow and pressure, and accurately controls the telescopic speed of the impact cylinder, thereby adjusting the impact frequency and strength of the hammer body 11. During the operation, the operator can adjust the impact strength according to the hardness of the soil layer, construction requirements, etc.

[0075] When a stronger impact force is needed, the hydraulic control mechanism 13 adjusts the switch valve to connect the accumulator 14 with the first oil port 3 and the second oil port 4 of the impact cylinder, so that the hydraulic oil stored in the accumulator 14 is quickly released; then the hydraulic oil in the accumulator 14 flows quickly to the impact cylinder through the high-pressure oil pipe 1302, increasing the pressure of the cylinder, thereby increasing the extension and retraction speed and impact force of the piston rod 2; when the accumulator 14 releases the stored hydraulic oil, the impact cylinder generates additional impact force, greatly enhancing the power of the impact hammer, enabling it to cope with harder soil layers or improve construction efficiency.

[0076] As a specific implementation, the control valve group 1301 is also connected to the accumulator 14 through the high-pressure oil pipe 1302. The accumulator 14 is also connected to the first oil port 3 and the second oil port 4 of the impact cylinder through the high-pressure oil pipe 1302, so that the stored hydraulic oil can be quickly released to increase the power of the impact hammer.

[0077] A switch valve is also provided between the accumulator 14 and the first oil port 3 and the second oil port 4 of the impact cylinder. The high-pressure oil pipe 1302 of the accumulator 14 is connected to the first oil port 3 and the second oil port 4 of the impact cylinder through the switch valve.

[0078] Specifically, the accumulator 14 is connected to the control valve group 1301, which is connected to the first oil port 3 and the second oil port 4 of the impact cylinder through the high-pressure oil pipe 1302, and then the sealing and pressure test of the oil pipe are ensured to pass to avoid leakage; then the hydraulic control mechanism 13 is started, and the flow and pressure of the hydraulic oil are adjusted by the control valve group 1301, so as to control the extension and retraction of the piston rod 2 of the impact cylinder and push the impact hammer to perform normal repeated impacts.

[0079] During normal impact, the control valve group 1301 delivers hydraulic oil to the first oil port 3 and the second oil port 4 of the impact cylinder through the high-pressure oil pipe 1302, pushing the piston rod 2 to extend and retract, and transmitting the impact force to the hammer body 11;

[0080] When the accumulator 14 is performing a pressurized impact to increase power, the hydraulic control mechanism 13 connects the accumulator 14 to the first oil port 3 and the second oil port 4 of the impact cylinder through the switch valve. At this time, the switch valve is opened to release the hydraulic oil in the accumulator 14; then the hydraulic oil stored in the accumulator 14 quickly flows to the first oil port 3 and the second oil port 4 of the impact cylinder through the high-pressure oil pipe 1302. The hydraulic oil in the accumulator 14 provides additional energy, so that the impact cylinder obtains a greater impact force, thereby meeting the operation requirements under high-pressure underwater or more complex engineering conditions.

[0081] As a specific implementation manner, a groove is embedded in the bottom of the hammer body 11, and the groove can be replaceably embedded with different impact pile heads.

[0082] Specifically, ensure that the impact hammer, impact cylinder, hydraulic control mechanism 13 and other components are correctly installed and fixed in place; in particular, a replaceable groove is embedded in the bottom of the impact hammer to ensure its compatibility with different types of impact pile heads; then, according to the needs of the operation, select a suitable impact pile head and embed it into the groove at the bottom of the impact hammer; ensure that the pile head and the groove are firmly matched, and the connection is not loose or deviated, so as to ensure stability and safety during the impact pile operation.

[0083] The groove design at the bottom of the impact hammer allows for quick replacement of different types of impact pile heads, which increases the adaptability of the equipment and enables selection of appropriate pile heads according to different construction environments and requirements. This greatly improves the versatility and flexibility of the equipment and allows it to adapt to more types of pile foundation construction.

[0084] Example 3

[0085] like Figure 1-8 As shown, this embodiment discloses a piling method of a piling device, and the piling method of the piling device comprises the following steps:

[0086] S1: Install the impact cylinder into the inner cavity of the guide frame 12 of the equipment, ensure that the piston rod 2 of the impact cylinder is firmly connected to the hammer body 11, and connect it to the external fixed structure through the connecting earring 7; according to the construction requirements, embed the groove at the bottom of the hammer body 11 into the pile head, and select a suitable impact pile head according to the shape of the pile head to ensure that the pile head and the hammer body 11 are accurately fitted;

[0087] S2: Start the hydraulic control mechanism 13, and supply hydraulic oil to the first oil port 3 and the second oil port 4 of the impact cylinder through the control valve group 1301; control the flow and pressure of the hydraulic oil through the high-pressure oil pipe 1302, push the piston rod 2 to move telescopically, and drive the hammer 11 to complete the impact action;

[0088] S3: When the hydraulic oil enters the rodless chamber of the impact cylinder, it pushes the piston rod 2 outward, and the impact force is transmitted to the hammer body 11 through the piston rod 2. The hammer body 11 applies the impact force to the pile head, so that the pile body is driven into the foundation;

[0089] S4: When the hydraulic oil enters the rod chamber of the impact cylinder, the piston rod 2 is pushed to retract inward, completing the reset and preparing for the next impact; the hydraulic control mechanism 13 can control the impact frequency and impact force by adjusting the hydraulic oil flow and pressure in real time to adapt to different soil conditions;

[0090] S5: Repeat S3 and S4 until the pile body is driven into a predetermined depth. During the impact process, the telescopic protective cover 6 of the piston rod 2 moves with the piston rod 2 to prevent external impurities from entering the inner cavity of the oil cylinder, thereby ensuring the stable operation of the equipment.

[0091] S6: When the pile body reaches the designed depth, the hydraulic system is stopped and the connection between the impact cylinder and the hammer body 11 is removed.

[0092] Specifically, through the precise hydraulic control system, the impact frequency and strength can be quickly adjusted, thereby improving the operating efficiency of the impact hammer, especially in soft soil or complex soil, the pile driving operation can be completed quickly, shortening the construction period; the hydraulic system can adjust the hydraulic oil flow and pressure according to the actual situation, flexibly control the impact strength and frequency, so as to cope with different soil layers and geological conditions, ensuring the accuracy and efficiency of the operation;

[0093] During the impact process, the flow and pressure of the hydraulic oil are precisely controlled to avoid damage to the equipment or pile body caused by excessive impact, ensuring the safety of operation. At the same time, the design of the equipment can effectively prevent the impact of the external environment on the internal system, ensuring long-term reliability.

[0094] As an embodiment, in the process of S5, when the impact force needs to be increased, the accumulator 14 can quickly release the stored hydraulic oil to the first oil port 3 and the second oil port 4 of the impact cylinder through the high-pressure oil pipe 1302, so as to provide additional power during the impact process and improve the impact efficiency;

[0095] The switch valve between the accumulator 14 and the impact cylinder switches on and off according to work requirements to ensure the stability of the hydraulic system pressure and avoid the impact of impact force fluctuations on the system.

[0096] Specifically, the additional power provided by the accumulator 14 greatly improves the impact capacity of the impact cylinder. Under high-demand operating conditions (such as when the external pressure on the seabed is high), it can provide stronger impact force, improve impact efficiency, and quickly promote the driving of the pile body; the switching of the switch valve between the accumulator 14 and the impact cylinder can adjust the flow of hydraulic oil according to operating needs, ensure the stability of the hydraulic system pressure, avoid equipment overload or damage caused by impact force fluctuations, and ensure the long-term stable operation of the system; this method not only improves operating efficiency, but also enhances the adaptability and safety of equipment, and provides strong technical support for marine engineering pile foundation construction.

[0097] 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 marine impact 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 plurality of first oil ports (3) and a second oil port (4), the plurality of first oil ports (3) and the second oil ports (4) are respectively arranged outside the cylinder body (1), and the plurality of second oil ports (4) are connected to the rodless cavity through a collecting pipe (5); The telescopic portion of the piston rod (2) is sleeved with a telescopic protective cover (6), which is arranged between the piston rod (2) and the cylinder body (1) and telescopes as the piston rod (2) telescopes; the impact oil cylinder is also provided with a connecting earring (7).

2. The marine impact cylinder according to claim 1, characterized in that: The ends of the cylinder body (1) and the piston rod (2) are detachably provided with connecting earrings (7), and the connecting earrings (7) are separately connected to the end of the piston rod (2) via a connecting sleeve (8).

3. The marine impact cylinder according to claim 2, characterized in that: A rotary bearing is embedded in the connecting earring (7), a hydraulic oil passage is provided between the connecting earring (7) and the rotary bearing, and the hydraulic oil passage is connected to a third oil port (10) provided outside the connecting earring (7).

4. The marine impact cylinder according to claim 1, characterized in that: The second oil port (4) and the collecting pipe (5) are respectively connected to a pressure measuring hole (9), and the pressure measuring hole (9) is arranged outside the cylinder body (1).

5. A piling equipment equipped with the marine impact cylinder according to any one of claims 1 to 4, characterized in that: The piling equipment comprises an impact hammer, which is driven by an impact cylinder to perform repeated movements, and comprises a hammer body (11), a guide frame (12) and a hydraulic control mechanism (13); the impact cylinder is arranged in the inner cavity of the guide frame (12), and the hydraulic control mechanism (13) is connected to the impact cylinder and is used to push a piston rod (2) connected inside to perform telescopic movements; the impact cylinder is connected to the hammer body (11) and transmits the impact force to the hammer body (11) through the piston rod (2); The hydraulic control mechanism (13) is composed of a control valve group (1301) and a plurality of high-pressure oil pipes (1302). The control valve group (1301) is respectively connected to the first oil port (3) and the second oil port (4) of the impact cylinder through the plurality of high-pressure oil pipes (1302) to control the impact frequency and force of the hammer (11) by controlling the flow pressure of the hydraulic oil.

6. The pile driving equipment equipped with a marine impact cylinder according to claim 5, characterized in that: The control valve group (1301) is also connected to an accumulator (14) via a high-pressure oil pipe (1302). The accumulator (14) is also connected to the first oil port (3) and the second oil port (4) of the impact cylinder via the high-pressure oil pipe (1302), so that the stored hydraulic oil can be quickly released to increase the power of the impact hammer.

7. The pile driving equipment equipped with a marine impact cylinder according to claim 6, characterized in that: A switch valve is also provided between the accumulator (14) and the first oil port (3) and the second oil port (4) of the impact cylinder, and the high-pressure oil pipe (1302) of the accumulator (14) is connected to the first oil port (3) and the second oil port (4) of the impact cylinder via the switch valve.

8. The pile driving equipment equipped with a marine impact cylinder according to claim 5, characterized in that: A groove is embedded in the bottom of the hammer body (11), and the groove can be replaceably embedded with different impact pile heads.

9. A piling method using the piling equipment according to any one of claims 5 to 8, characterized in that: The piling method comprises the following steps: S1: Install the impact cylinder into the inner cavity of the guide frame (12) of the equipment, ensure that the piston rod (2) of the impact cylinder is firmly connected to the hammer body (11), and at the same time connect it to the external fixed structure through the connecting earring (7); according to the construction requirements, embed the groove at the bottom of the hammer body (11) into the pile head, and select a suitable impact pile head according to the shape of the pile head to ensure that the pile head and the hammer body (11) fit together; S2: starting the hydraulic control mechanism (13) to supply hydraulic oil to the first oil port (3) and the second oil port (4) of the impact cylinder through the control valve group (1301); controlling the flow rate and pressure of the hydraulic oil through the high-pressure oil pipe (1302), pushing the piston rod (2) to move in a telescopic manner, and driving the hammer body (11) to complete the impact action; S3: When the hydraulic oil enters the rodless chamber of the impact cylinder, the piston rod (2) is pushed outward, and the impact force is transmitted to the hammer body (11) through the piston rod (2). The hammer body (11) applies the impact force to the pile head, so that the pile body is driven into the foundation; S4: When the hydraulic oil enters the rod chamber of the impact cylinder, the piston rod (2) is pushed to retract inward, completing the reset and preparing for the next impact; the hydraulic control mechanism (13) can control the impact frequency and impact force by adjusting the flow and pressure of the hydraulic oil in real time to adapt to different soil conditions; S5: Repeat S3 and S4 until the pile body is driven into a predetermined depth. During the impact process, the telescopic protective cover (6) of the piston rod (2) moves with the piston rod (2) to prevent external impurities from entering the inner cavity of the oil cylinder, thereby ensuring stable operation of the equipment. S6: When the pile reaches the designed depth, the hydraulic system is stopped and the connection between the impact cylinder and the hammer (11) is removed.

10. The piling method of the piling equipment according to claim 9, characterized in that: In the process S5, when the impact force needs to be increased, the accumulator (14) can quickly release the stored hydraulic oil to the first oil port (3) and the second oil port (4) of the impact cylinder through the high-pressure oil pipe (1302), thereby providing additional power during the impact process and improving the impact efficiency; The switch valve between the accumulator (14) and the impact cylinder switches on and off according to work requirements, thereby ensuring the stability of the pressure of the hydraulic system and avoiding the influence of impact force fluctuations on the system.

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