Offshore foundation construction hydraulic hammer fixture and method

Abstract

The application discloses a kind of offshore foundation construction hydraulic hammer fixing device and method, the device includes upper platform, first column, second column, first ring beam and second ring beam, top fastening device is provided on upper platform, bottom fastening device is provided on first ring beam, first column is arranged between upper platform and second ring beam, for connecting upper platform and second ring beam, second column is arranged between first ring beam and second ring beam, for connecting first ring beam and second ring beam.The safety of the application is high, without taking lift cage to carry out high-altitude work;Construction efficiency is high, saves the time of working personnel to hang and unhook in the construction process by taking lift cage, also saves the time of sea binding and unbinding of hydraulic hammer before ship transfer;Top fastening device and bottom fastening device are set, hydraulic hammer is placed in deck, is righted in advance by bottom fastening device, reduces the hammer body shaking before landing, avoids bumping;Good versatility can be applied to different styles of hydraulic hammer.

Description

Technical Field

[0001] This invention belongs to the field of marine construction technology, specifically relating to a hydraulic hammer fixing device and method for marine foundation construction. Background Technology

[0002] As the diameter of offshore steel pile foundations continues to increase, hydraulic hammers have become the main equipment in the pile driving process. However, the following problems exist in the construction:

[0003] Hydraulic hammers are usually placed on the deck of a ship. During transportation, they move with the ship and are easily damaged. To solve this problem, flexible steel wire ropes are currently used to fix the top of the hydraulic hammer rod. However, this requires proper control of the pretension of the steel wire rope, and the rope is also prone to loosening during transportation.

[0004] The hydraulic hammer is very tall, about 20m. The top connection with the steel wire rope or construction hook requires the use of a crane to hoist the workers to the height for connection, which results in low construction efficiency and high personnel danger.

[0005] When the hydraulic hammer is lowered back onto the deck after pile driving, it is prone to impact damage due to the swaying of the hammer caused by the movement of the ship. Summary of the Invention

[0006] To address the technical problems existing in the prior art, the present invention aims to provide a hydraulic hammer fixing device and method for offshore foundation construction.

[0007] To achieve the above objectives and technical effects, the technical solution adopted by this invention is as follows:

[0008] A hydraulic hammer fixing device for offshore foundation construction includes an upper platform, a first column, a second column, a first ring beam, and a second ring beam. The upper platform is provided with a top fastening device, and the first ring beam is provided with a bottom fastening device. The first column is located between the upper platform and the second ring beam to connect the upper platform and the second ring beam, and the second column is located between the first ring beam and the second ring beam to connect the first ring beam and the second ring beam.

[0009] Furthermore, the upper platform, the second ring beam, and the first ring beam are arranged sequentially from top to bottom.

[0010] Furthermore, the top of the first column is connected to the upper platform, the bottom of the first column is connected to the second ring beam, the top of the second column is connected to the second ring beam, and the bottom of the second column is connected to the first ring beam.

[0011] Furthermore, the first ring beam is an intermittent structure, with several discontinuities on the first ring beam, and each discontinuity is equipped with a bottom fastening device.

[0012] Furthermore, the bottom fastening device is used to fix the hammer cap of the hydraulic hammer. The bottom fastening device includes a guide plate, a housing, a push rod, a slider, a spring, a steel plate, a slide rail, and a second telescopic rod. The two ends of the second telescopic rod are respectively connected to the housing and the first ring beam. A spring is provided inside the housing, a steel plate is provided on the spring, a push rod is provided on the steel plate, a guide plate is provided on the push rod, a slider is provided at the bottom of the push rod, and a slide rail is provided at the bottom of the housing. The slider can slide along the slide rail. When the guide plate is subjected to force, it drives the push rod to move towards the spring. At this time, the slider at the bottom of the push rod moves towards the spring along the slide rail, compressing the spring.

[0013] Furthermore, the second ring beam has a continuous circular structure.

[0014] Furthermore, the top fastening device is used to fix the hammer rod of the hydraulic hammer. The top fastening device includes a pile clamping arm and a first telescopic rod. One end of the pile clamping arm is hinged to the upper platform, and the other end is an arc-shaped clamping structure with the center of the arc passing through the center of the hammer rod. One end of the first telescopic rod is hinged to the pile clamping arm, and the other end is hinged to the upper platform. The opening and closing of the pile clamping arm is controlled by controlling the length of the first telescopic rod.

[0015] Furthermore, a flexible buffer structure is provided at the contact position between the arc-shaped clamping structure and the hammer rod.

[0016] Furthermore, a ladder base is provided on the upper platform, and a telescopic ladder with variable amplitude is provided on the ladder base to accommodate hydraulic hammers of different heights. Handrails are provided around the upper platform and the telescopic ladder.

[0017] This invention also discloses a method for fixing a hydraulic hammer in offshore foundation construction, which uses a hydraulic hammer fixing device for offshore foundation construction as described above. The fixing method includes the following steps:

[0018] 1) Pre-draw positioning points at the lower opening of the hydraulic hammer cap to facilitate the subsequent placement of the hydraulic hammer;

[0019] 2) Workers enter the upper platform via an inclined ladder or climbing ladder, and then reach the top of the hydraulic hammer via a telescopic ladder to hook it up;

[0020] 3) The first telescopic rod retracts, the top fastening device is opened, the second telescopic rod extends, the guide plate is removed from the hammer cap, and the hydraulic hammer is lifted off the ground and its posture is observed. If there is a large sway, it is straightened by the bottom fastening device. After the hydraulic hammer is stable, the hydraulic hammer is lifted and lifted to the top of the steel pile to be driven.

[0021] 4) Pile driving construction;

[0022] 5) Lift the hydraulic hammer away from the steel pile. At this time, the pile clamping arm of the top fastening device opens, the second telescopic rod of the bottom fastening device extends, and the box body retracts to its maximum.

[0023] 6) The hydraulic hammer is moved horizontally and hoisted, and then slowly lowered after the hammer rod is located in the center of the pile clamping arm;

[0024] 7) When it falls close to the bottom, the bottom fastening device is tightened by the second telescopic rod, and the hammer cap contacts the guide plate;

[0025] 8) Continue to retract the second telescopic rod to stabilize the hydraulic hammer until it stops moving laterally;

[0026] 9) By adjusting the center of the hydraulic hammer through the movement of the crane and the cooperation of the bottom fastening device, the lower opening of the hydraulic hammer cap is aligned with the pre-set positioning point. Continue to lower the hydraulic hammer until it is placed on the ship deck.

[0027] 10) Tighten the top fastening device to secure the hammer rod;

[0028] 11) Workers enter the upper platform via an inclined ladder or climbing ladder, and then use a telescopic ladder to reach the top of the hydraulic hammer to remove the hook.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] This invention discloses a hydraulic hammer fixing device and method for offshore foundation construction. The device includes an upper platform, a first column, a second column, a first ring beam, and a second ring beam. A top fastening device is provided on the upper platform, and a bottom fastening device is provided on the first ring beam. The first column is located between the upper platform and the second ring beam to connect the upper platform and the second ring beam, and the second column is located between the first ring beam and the second ring beam to connect the first ring beam and the second ring beam. This invention offers high safety, eliminating the need for high-altitude operations in a gondola; it also boasts high construction efficiency, saving time spent by workers using gondolas to hook and unhook the hydraulic hammer, as well as time spent on sea tying and untying the hydraulic hammer before ship relocation; it features top and bottom fastening devices, allowing the hydraulic hammer to be positioned in front of the deck and pre-positioned via the bottom fastening device to reduce hammer swaying before landing and prevent collisions; the top fastening device secures the equipment, preventing structural loosening due to ship movement, making it more reliable than using flexible steel wire ropes; it is highly versatile and applicable to different types of hydraulic hammers. For variations in hammer head diameter, the diameter of the limiting structure can be adjusted by changing the position of the bottom fastening device; for variations in hammer rod height, the position of the upper platform can be changed by altering the length of the first column, thus changing the clamping height of the top fastening device; and for personnel operation, the required hooking and unhooking positions can be achieved by adjusting the ladder's width and extension length. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0032] Figure 2 This is a front view of the present invention;

[0033] Figure 3 This is a top view of the present invention;

[0034] Figure 4 This is a schematic diagram of the bottom fastening device of the present invention. Detailed Implementation

[0035] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0036] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0037] Example 1

[0038] like Figure 1-4 As shown, a hydraulic hammer fixing device for offshore foundation construction includes an upper platform 1, a first column 2, a second column 3, a first ring beam 4, and a second ring beam 5. The upper platform 1, the second ring beam 5, and the first ring beam 2 are arranged sequentially from top to bottom. The first column 2 can be connected by a flange, while the others are welded. The first column 2 connects the upper platform 1 and the second ring beam 5, and the second column 3 connects the first ring beam 4 and the second ring beam 5. Specifically, the top of the first column 2 is connected to the upper platform 1, the bottom of the first column 2 is connected to the second ring beam 5, and the top of the second column 3 is connected to the second ring beam 5. The ring beams 5 are connected, and the bottom of the second column 3 is connected to the first ring beam 4. The second ring beam 5 is a continuous structure, while the first ring beam 4 is an intermittent structure. There are 4 interruptions in the first ring beam 4, and each interruption is equipped with a bottom fastening device 6. The upper platform 1 is equipped with a top fastening device 7. The upper platform 1 is equipped with a ladder base 8, and the ladder base 8 is equipped with a telescopic ladder 9 that can be adjusted to accommodate hydraulic hammers 10 at different heights. The upper platform 1 and the telescopic ladder 9 are equipped with railings and handrails. An inclined ladder or climbing ladder structure can be set on the outside of the ring beam according to the site conditions to reach the upper platform 1.

[0039] The bottom fastening device 6 is used to fix the hammer cap 14 of the hydraulic hammer 10. It includes a guide plate 15, a box 16, a push rod 17, a slider 18, a spring 19, a steel plate 20, a slide rail 21, and a second telescopic rod 22. The two ends of the second telescopic rod 22 are respectively connected to the box 16 and the first ring beam 4. The box 16 is equipped with a spring 19, a steel plate 20 is provided on the spring 19, a push rod 17 is provided on the steel plate 20, a guide plate 15 is provided on the push rod 17, a slider 18 is provided at the bottom of the push rod 17, and a slide rail 21 is provided at the bottom of the box 16. When the guide plate 15 is subjected to force, it drives the push rod 17 to move backward (towards the spring 19). At this time, the slider 18 at the bottom of the push rod 17 moves backward along the slide rail 21 and squeezes the spring 19.

[0040] The top fastening device 7 is used to fix the hammer rod 11 of the hydraulic hammer 10. It includes a pile clamping arm 12 and a first telescopic rod 13. One end of the pile clamping arm 12 is hinged to the upper platform beam, and the other end is an arc-shaped clamping structure. The center of the arc passes through the center of the hammer rod. The contact position between the arc-shaped clamping structure and the hammer rod 11 is provided with a flexible buffer structure such as a rubber block. One end of the first telescopic rod 13 is hinged to the pile clamping arm 12, and the other end is hinged to the upper platform beam. The opening and closing of the pile clamping arm 12 can be controlled by controlling the length of the first telescopic rod 13.

[0041] This invention also discloses a method for fixing a hydraulic hammer in offshore foundation construction, comprising the following steps:

[0042] 1) Pre-draw positioning points at the lower opening of the hydraulic hammer cap to facilitate the subsequent placement of the hydraulic hammer;

[0043] 2) Workers enter the upper platform 1 via an inclined ladder or climbing ladder, and then reach the top of the hydraulic hammer via the telescopic ladder 9 to hook it up;

[0044] 3) The first telescopic rod 13 retracts, the top fastening device 7 is opened, the second telescopic rod 22 extends, the guide plate 15 is removed from the hammer cap 14, and the hydraulic hammer is lifted off the ground and its posture is observed. If there is a large sway, it is straightened by the bottom fastening device 6. After the hydraulic hammer is stable, the hydraulic hammer is lifted and lifted to the top of the steel pile to be driven.

[0045] 4) Pile driving construction;

[0046] 5) The hydraulic hammer is lifted away from the steel pile. At this time, the pile clamping arm 12 of the top fastening device 7 opens, the second telescopic rod 22 of the bottom fastening device 6 extends, and the box 16 retracts to its maximum.

[0047] 6) The hydraulic hammer is moved and hoisted, and the hammer rod 11 is slowly lowered after being located at the center of the pile clamping arm 12;

[0048] 7) When it falls to near the bottom, the bottom fastening device 6 is tightened by the second telescopic rod 22, and the hammer cap 14 contacts the guide plate 15;

[0049] 8) Continue to retract the second telescopic rod 22 to stabilize the hydraulic hammer until it stops moving laterally;

[0050] 9) By adjusting the center of the hydraulic hammer through the movement of the crane and the cooperation of the bottom fastening device 6, the lower opening of the hydraulic hammer cap is aligned with the pre-set positioning point. Continue to lower the hydraulic hammer until it is placed on the ship deck.

[0051] 10) Tighten the top fastening device 7 to fix the hammer rod 11;

[0052] 11) Workers enter the upper platform 1 via an inclined ladder or climbing ladder, and then use the telescopic ladder 9 to reach the top of the hydraulic hammer to remove the hook.

[0053] Any parts or structures not specifically described in this invention can be made using existing technologies or products, and will not be elaborated upon here.

[0054] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for fixing a hydraulic hammer in offshore foundation construction, characterized in that, A hydraulic hammer fixing device for offshore foundation construction is used for fixing. The hydraulic hammer fixing device for offshore foundation construction includes an upper platform, a first column, a second column, a first ring beam, and a second ring beam. The upper platform is equipped with a top fastening device, and the first ring beam is equipped with a bottom fastening device. The first column is located between the upper platform and the second ring beam to connect the upper platform and the second ring beam. The second column is located between the first ring beam and the second ring beam to connect the first ring beam and the second ring beam. The bottom fastening device is used to fix the hammer cap of the hydraulic hammer. The bottom fastening device includes a guide plate, a housing, a push rod, a slider, a spring, a steel plate, a slide rail, and a second telescopic rod. The two ends of the second telescopic rod are respectively connected to the housing and the first ring beam. A spring is provided inside the housing. A steel plate is provided on the spring. A push rod is provided on the steel plate. A guide plate is provided on the push rod. A slider is provided at the bottom of the push rod. A slide rail is provided at the bottom of the housing. The slider can slide along the slide rail. When the guide plate is subjected to force, it drives the push rod to move towards the spring. At this time, the slider at the bottom of the push rod moves towards the spring along the slide rail, compressing the spring. The top fastening device is used to fix the hammer rod of the hydraulic hammer. The top fastening device includes a pile clamping arm and a first telescopic rod. One end of the pile clamping arm is hinged to the upper platform, and the other end is an arc-shaped clamping structure with the center of the arc passing through the center of the hammer rod. One end of the first telescopic rod is hinged to the pile clamping arm, and the other end is hinged to the upper platform. The opening and closing of the pile clamping arm is controlled by controlling the length of the first telescopic rod. The upper platform is provided with a ladder base, and the ladder base is provided with a telescopic ladder with variable amplitude to accommodate hydraulic hammers of different heights. The upper platform and the telescopic ladder are all provided with railings and handrails. The fixing method includes the following steps: 1) Pre-draw positioning points at the lower opening of the hydraulic hammer cap to facilitate the subsequent placement of the hydraulic hammer; 2) Workers enter the upper platform via an inclined ladder or climbing ladder, and then reach the top of the hydraulic hammer via a telescopic ladder to hook it up; 3) The first telescopic rod retracts, the top fastening device is opened, the second telescopic rod extends, the guide plate is removed from the hammer cap, and the hydraulic hammer is lifted off the ground. Observe its posture. If it shakes, straighten it through the bottom fastening device. After the hydraulic hammer is stable, start lifting the hydraulic hammer and lift it to the top of the steel pile to be driven. 4) Pile driving construction; 5) Lift the hydraulic hammer away from the steel pile. At this time, the pile clamping arm of the top fastening device opens, the second telescopic rod of the bottom fastening device extends, and the box body retracts to its maximum. 6) The hydraulic hammer is moved horizontally and hoisted, and then slowly lowered after the hammer rod is located in the center of the pile clamping arm; 7) When it falls close to the bottom, the bottom fastening device is tightened by the second telescopic rod, and the hammer cap contacts the guide plate; 8) Continue to retract the second telescopic rod to stabilize the hydraulic hammer until it stops moving laterally; 9) By adjusting the center of the hydraulic hammer through the movement of the crane and the cooperation of the bottom fastening device, the lower opening of the hydraulic hammer cap is aligned with the pre-set positioning point. Continue to lower the hydraulic hammer until it is placed on the ship deck. 10) Tighten the top fastening device to secure the hammer rod; 11) Workers enter the upper platform via an inclined ladder or climbing ladder, and then use a telescopic ladder to reach the top of the hydraulic hammer to remove the hook.

2. The method for fixing a hydraulic hammer in offshore foundation construction according to claim 1, characterized in that, The upper platform, the second ring beam, and the first ring beam are arranged in order from top to bottom.

3. The method for fixing a hydraulic hammer in offshore foundation construction according to claim 2, characterized in that, The top of the first column is connected to the upper platform, the bottom of the first column is connected to the second ring beam, the top of the second column is connected to the second ring beam, and the bottom of the second column is connected to the first ring beam.

4. The method for fixing a hydraulic hammer in offshore foundation construction according to claim 1, characterized in that, The first ring beam is an intermittent structure, with several discontinuities on the first ring beam, and each discontinuity is equipped with a bottom fastening device.

5. The method for fixing a hydraulic hammer in offshore foundation construction according to claim 1, characterized in that, The second ring beam has a continuous circular structure.

6. The method for fixing a hydraulic hammer in offshore foundation construction according to claim 1, characterized in that, The arc-shaped clamping structure is provided with a flexible buffer structure at the contact position with the hammer rod.

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