Hydraulic hammer fixing device and method for offshore foundation construction

Abstract

The invention discloses an offshore foundation construction hydraulic hammer fixing device and method.The device comprises an upper-layer platform, a first stand column, a second stand column, a first ring beam and a second ring beam, a top fastening device is arranged on the upper-layer platform, a bottom fastening device is arranged on the first ring beam, and the first stand column is arranged between the upper-layer platform and the second ring beam; the second stand column is arranged between the first ring beam and the second ring beam and used for connecting the first ring beam and the second ring beam. The safety is high, and high-altitude operation can be carried out without taking a cage; the construction efficiency is high, the time for workers to take a cage to hook and unhook in the construction process is saved, and the time for sea binding and unbinding of the hydraulic hammer before ship transition is also saved; the top fastening device and the bottom fastening device are arranged, the hydraulic hammer is placed in front of a deck and is straightened in advance through the bottom fastening device, shaking of the hammer body before landing is reduced, and collision is avoided; and the device is good in universality and can be suitable for different types of hydraulic hammers.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore construction, and in particular relates to a device and method for fixing a hydraulic hammer for offshore foundation construction. Background Art

[0002] As the diameter of offshore steel pile foundations continues to increase, hydraulic hammers have become the main equipment in the pile sinking construction process, but there are the following problems in the construction:

[0003] The hydraulic hammer is usually placed on the deck of the ship. It will move with the ship during transportation and is easily damaged. To solve this problem, a flexible steel wire rope is currently used to fix the top of the hydraulic hammer rod, but this requires reasonable control of the pre-tightening force of the steel wire rope, and the rope is also prone to loosening during transportation;

[0004] The hydraulic hammer is very high, about 20 meters. The top connection wire rope sea lashing or construction hook requires workers to be hoisted to a high place by a crane to connect, which has low construction efficiency and high risk to personnel.

[0005] When the hydraulic hammer returns to the deck after piling, the hammer body shakes due to the movement of the ship, and it is easy to be bumped and damaged when falling. Summary of the invention

[0006] In order to solve the technical problems existing in the prior art, the purpose of the present invention is to provide a hydraulic hammer fixing device and method for offshore foundation construction.

[0007] In order to achieve the above purpose and the above technical effect, the technical solution adopted by the present invention is:

[0008] A hydraulic hammer fixing device for offshore foundation construction comprises an upper platform, a first column, a second column, a first ring beam and a second ring beam, wherein a top fastening device is arranged on the upper platform, a bottom fastening device is arranged on the first ring beam, the first column is arranged between the upper platform and the second ring beam for connecting the upper platform and the second ring beam, and the second column is arranged between the first ring beam and the second ring beam for connecting 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 in sequence 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 a discontinuous structure, and a plurality of discontinuities are arranged on the first ring beam, and each discontinuity is provided with a bottom fastening device.

[0012] Furthermore, the bottom fastening device is used to fix the hammer cap of the hydraulic hammer, and the bottom fastening device includes a guide plate, a box body, a push rod, a slider, a spring, a steel plate, a slideway and a second telescopic rod, and the two ends of the second telescopic rod are respectively connected to the box body and the first ring beam, a spring is provided in the box body, 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 slideway is provided at the bottom of the box body. The slider can slide along the slideway, and when the guide plate is subjected to force, it drives the push rod to move toward the spring. At this time, the slider at the bottom of the push rod moves along the slideway toward the spring to squeeze the spring.

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

[0014] Furthermore, the top fastening device is used to fix the hammer rod of the hydraulic hammer, and 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, the center of the arc passes 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. Railing handrails are provided around the upper platform and the telescopic ladder.

[0017] The present invention also discloses a method for fixing a hydraulic hammer for offshore foundation construction, which is fixed by using the above-mentioned hydraulic hammer fixing device for offshore foundation construction. The fixing method comprises the following steps:

[0018] 1) Draw a positioning point for the lower opening of the hydraulic hammer cap in advance to facilitate the subsequent positioning of the hydraulic hammer;

[0019] 2) The staff enters the upper platform through an inclined ladder or a ladder, and then reaches the top of the hydraulic hammer through a telescopic ladder to hook it;

[0020] 3) The first telescopic rod is retracted, the top fastening device is opened, the second telescopic rod is extended, the guide plate is separated from the hammer cap, and the hydraulic hammer is lifted off the ground and its posture is observed. If it shakes greatly, it is straightened through the bottom fastening device. After the hydraulic hammer is stable, the hydraulic hammer is started to be lifted and lifted to the top of the steel pile to be driven;

[0021] 4) Pile sinking 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 retreats to the maximum;

[0023] 6) The hydraulic hammer is hoisted horizontally, and the hammer rod slowly falls after it is located in the center of the pile clamp arm;

[0024] 7) When falling close to the bottom, tighten the bottom fastening device through 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) Adjust the center of the hydraulic hammer through the movement of the crane and the cooperation of the bottom fastening device so that the lower opening of the hydraulic hammer cap coincides with the pre-set positioning point, and continue to lower the hydraulic hammer until it is placed on the ship deck;

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

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

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

[0030] The invention discloses a device and method for fixing a hydraulic hammer for offshore foundation construction. The device comprises an upper platform, a first column, a second column, a first ring beam and a second ring beam. A top fastening device is arranged on the upper platform, a bottom fastening device is arranged on the first ring beam, the first column is arranged between the upper platform and the second ring beam and is used to connect the upper platform and the second ring beam, and the second column is arranged between the first ring beam and the second ring beam and is used to connect the first ring beam and the second ring beam. The invention has high safety and does not require a cage for high-altitude operations; the invention has high construction efficiency, which saves the time of workers riding in the cage to hook and unhook during the construction process, and also saves the time of sea tying and untying the hydraulic hammer before the ship is transferred; a top fastening device and a bottom fastening device are provided, and the hydraulic hammer is placed in front of the deck, and is straightened in advance by the bottom fastening device, so as to reduce the shaking of the hammer body before landing and avoid collision; the equipment is fixed by the top fastening device, and the structure will not be loosened due to the movement of the ship, which is more reliable than fixing with a flexible steel wire rope; the invention has good versatility and can be applied to hydraulic hammers of different styles; for changes in the diameter of the hammer cap, the diameter of the limiting structure can be adjusted by changing the position of the bottom fastening device; for changes in the height of the hammer rod, the position of the upper platform can be changed by changing the length of the first column, thereby changing the clamping height of the top fastening device; for personnel operation, the required unhooking and hooking positions can be achieved by changing the amplitude and telescopic length of the ladder. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0033] Figure 3 A top view of the present invention;

[0034] Figure 4 It is a schematic structural diagram of the bottom fastening device of the present invention. DETAILED DESCRIPTION

[0035] The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0036] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[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, wherein the upper platform 1, the second ring beam 3 and the first ring beam 2 are arranged in sequence from top to bottom, the first column 2 can be connected by flange connection, and the rest are welded, the first column 2 is used to connect the upper platform 1 and the second ring beam 5, and the second column 3 is used to connect 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 second ring beam 5 is connected, the bottom of the second column 3 is connected to the first ring beam 4, the second ring beam 5 is a continuous structure, the first ring beam 4 is a discontinuous structure, the first ring beam 4 is provided with 4 discontinuities, each discontinuity is provided with a bottom fastening device 6, the upper platform 1 is provided with a top fastening device 7, the upper platform 1 is provided with a ladder base 8, the ladder base 8 is provided with a telescopic ladder 9 with adjustable amplitude, which is used to adapt to hydraulic hammers 10 of different heights, the upper platform 1 and the telescopic ladder 9 are provided with railings around them, and an inclined ladder or a climbing ladder structure can be provided on the outside of the ring beam according to the on-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, and includes a guide plate 15, a box body 16, a push rod 17, a slider 18, a spring 19, a steel plate 20, a slide 21, and a second telescopic rod 22. The two ends of the second telescopic rod 22 are respectively connected to the box body 16 and the first ring beam 4. A spring 19 is provided in the box body 16, 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 20 is provided at the bottom of the box body 16. When the guide plate 15 is subjected to force, the push rod 17 is driven to move backward (toward the direction of the spring 19). At this time, the slider 18 at the bottom of the push rod 17 moves backward along the slide 20 to squeeze the spring 19.

[0040] The top fastening device 7 is used to fix the hammer rod 11 of the hydraulic hammer 10, including 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, and a flexible buffer structure such as a rubber block is provided at the contact position between the arc-shaped clamping structure and the hammer rod 11. 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] The present invention also discloses a method for fixing a hydraulic hammer for offshore foundation construction, comprising the following steps:

[0042] 1) Draw a positioning point for the lower opening of the hydraulic hammer cap in advance to facilitate the subsequent positioning of the hydraulic hammer;

[0043] 2) The staff enters the upper platform 1 through an inclined ladder or a climbing ladder, and then reaches the top of the hydraulic hammer through a telescopic ladder 9 to hook it;

[0044] 3) The first telescopic rod 13 is retracted, the top fastening device 7 is opened, the second telescopic rod 22 is extended, the guide plate 15 is separated from the hammer cap 14, and the hydraulic hammer is lifted off the ground and its posture is observed. If it shakes greatly, it is straightened through the bottom fastening device 6. After the hydraulic hammer is stable, the hydraulic hammer is started to be lifted to the top of the steel pile to be driven;

[0045] 4) Pile sinking construction;

[0046] 5) The hydraulic hammer is lifted off the steel pile, at which time the pile clamping arm 12 of the top fastening device 7 is opened, the second telescopic rod 22 of the bottom fastening device 6 is extended, and the box 16 is retracted to the maximum;

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

[0048] 7) When falling close to 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) Through the movement of the crane and the cooperation of the bottom fastening device 6, the center of the hydraulic hammer is adjusted so that the lower opening of the hydraulic hammer cap coincides with the preset positioning point, and the hydraulic hammer is continued to be lowered until it is placed on the ship deck;

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

[0052] 11) The staff enters the upper platform 1 through an inclined ladder or a climbing ladder, and then uses a telescopic ladder 9 to reach the top of the hydraulic hammer to remove the hook.

[0053] Parts or structures not specifically described in the present invention may adopt existing technologies or existing products and will not be described in detail here.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic hammer fixing device for offshore foundation construction, characterized in that: The invention comprises an upper platform, a first column, a second column, a first ring beam and a second ring beam, wherein a top fastening device is arranged on the upper platform, a bottom fastening device is arranged on the first ring beam, the first column is arranged between the upper platform and the second ring beam for connecting the upper platform and the second ring beam, and the second column is arranged between the first ring beam and the second ring beam for connecting the first ring beam and the second ring beam.

2. A hydraulic hammer fixing device for 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 sequence from top to bottom.

3. A hydraulic hammer fixing device for 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. A hydraulic hammer fixing device for offshore foundation construction according to claim 1, characterized in that: The first ring beam is a discontinuous structure, and a plurality of discontinuities are arranged on the first ring beam, and each discontinuity is provided with a bottom fastening device.

5. A hydraulic hammer fixing device for offshore foundation construction according to claim 1 or 4, characterized in that: The bottom fastening device is used to fix the hammer cap of the hydraulic hammer. The bottom fastening device includes a guide plate, a box body, a push rod, a slider, a spring, a steel plate, a slideway and a second telescopic rod. The two ends of the second telescopic rod are respectively connected to the box body and the first ring beam. A spring is arranged in the box body, a steel plate is arranged on the spring, a push rod is arranged on the steel plate, a guide plate is arranged on the push rod, a slider is arranged at the bottom of the push rod, and a slideway is arranged at the bottom of the box body. The slider can slide along the slideway. When the guide plate is subjected to force, the push rod is driven to move toward the spring. At this time, the slider at the bottom of the push rod moves along the slideway toward the spring to squeeze the spring.

6. The offshore foundation construction hydraulic hammer fixing device according to claim 1, characterized in that: The second ring beam is a continuous circular structure.

7. The offshore foundation construction hydraulic hammer fixing device according to claim 1, characterized in that: 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, the center of the arc passes 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.

8. A hydraulic hammer fixing device for offshore foundation construction according to claim 7, characterized in that: A flexible buffer structure is provided at the contact position between the arc-shaped clamping structure and the hammer rod.

9. The offshore foundation construction hydraulic hammer fixing device according to claim 1, characterized in that: A ladder base is arranged on the upper platform, and a telescopic ladder with variable amplitude is arranged on the ladder base to adapt to hydraulic hammers of different heights. Railing handrails are arranged around the upper platform and the telescopic ladder.

10. A method for fixing a hydraulic hammer for offshore foundation construction, characterized in that: The fixing is performed by using a hydraulic hammer fixing device for offshore foundation construction as described in any one of claims 1 to 9, and the fixing method comprises the following steps: 1) Draw a positioning point for the lower opening of the hydraulic hammer cap in advance to facilitate the subsequent positioning of the hydraulic hammer; 2) The staff enters the upper platform through an inclined ladder or a ladder, and then reaches the top of the hydraulic hammer through a telescopic ladder to hook it; 3) The first telescopic rod is retracted, the top fastening device is opened, the second telescopic rod is extended, the guide plate is separated from the hammer cap, and the hydraulic hammer is lifted off the ground and its posture is observed. If it shakes greatly, it is straightened through the bottom fastening device. After the hydraulic hammer is stable, the hydraulic hammer is started to be lifted and lifted to the top of the steel pile to be driven; 4) Pile sinking 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 retreats to the maximum; 6) The hydraulic hammer is hoisted horizontally, and the hammer rod slowly falls after it is located in the center of the pile clamp arm; 7) When falling close to the bottom, tighten the bottom fastening device through 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) Adjust the center of the hydraulic hammer through the movement of the crane and the cooperation of the bottom fastening device so that the lower opening of the hydraulic hammer cap coincides with the pre-set positioning point, and continue to lower the hydraulic hammer until it is placed on the ship deck; 10) Tighten the top fastening device to fix the hammer rod; 11) The staff enters the upper platform via an inclined ladder or a climbing ladder, and then uses a telescopic ladder to reach the top of the hydraulic hammer to remove the hook.

Images