Drilling platform wharf standing pile cantilever beam recovery installation method

Abstract

The invention relates to the technical field of drilling platform resetting, in particular to a drilling platform wharf standing pile cantilever beam recovery installation method which comprises the following steps: (1) designing a drilling platform; (2) designing a wharf bearing platform; and (3) cantilever beam installation recovery: through the three steps, overall protective cantilever beam installation recovery of the drilling platform is met, the risk of damage and deformation of the cantilever beam is avoided, and the method is suitable for the field of cantilever beam installation in the drilling platform manufacturing process or the field that the cantilever beam is disassembled by the platform to be used for modifying a wind power installation platform and then installed on an original drilling platform for operation. The problems that the dock period of the dock is insufficient and large hoisting equipment is not needed are solved. According to the method, the project cost of mounting recovery of the cantilever beam of the drilling platform is reduced, the project period is shortened, the construction safety is improved, and damage and deformation of the cantilever beam are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of drilling platform resetting, in particular to a method for restoring and installing a cantilever beam of a drilling platform dock pile, which has the advantages of simple method, low cost, good restoration effect, high restoration efficiency, short construction period and high safety. Background Art

[0002] As we all know, offshore wind power projects currently require a large number of offshore wind power installation vessels. Some offshore oil drilling platforms such as CJ46, CJ50 and JU200 directly dismantle the cantilever beam drilling package and transform it into a wind power installation platform. After the operation is completed, the cantilever beam drilling package needs to be restored to restore the oil drilling function of the platform. The commonly used solution is to split the cantilever beam into two parts: the cantilever beam body structure and the drilling frame, and install them with a large floating crane, or to make a slideway on the ground and use a winch to slide and install. These two solutions are not only extremely costly, have a long construction period, but also have great risks. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide a method for restoring and installing a cantilever beam of a drilling platform wharf pile station which is simple, low in cost, good in restoration effect, high in restoration efficiency, short in construction period and high in safety.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A method for restoring and installing a cantilever beam of a drilling platform dock pile, characterized in that the steps of the installation method are as follows: (1) Design of drilling platform: A sliding groove is provided on the drilling platform, and a bottom wear-resistant plate is provided at the bottom of the sliding groove. A protruding pressure block integrally connected to the side wall of the sliding groove is provided on the drilling platform on the left and right sides of the sliding groove. A top block is provided on the left and right sides of the exit position of the sliding groove. The side of the top block is detachably connected to the sliding groove by bolts. Through holes are provided on the pressure block and the top block respectively. A clamping groove is provided below the pressure block and the top block respectively. The upper bolt passes through the through hole and is fixedly connected to the threaded hole on the top wear-resistant plate in the clamping groove. Side wear-resistant plates are provided on the left and right sides of the sliding groove below the pressure block respectively. The side wear-resistant plates are fixed to the side of the sliding groove by side bolts. The bottom wear-resistant plate, the side wear-resistant plate and the top wear-resistant plate are slidably connected to the T-shaped slider of the cantilever beam. (2) Design of the dock bearing platform: A slide rail 20 coaxial with the T-shaped slider in the sliding groove is provided on the dock. There are two slide rails 20, each of which is slidably connected to the support sliding vehicle. The support sliding vehicle includes a pulley, a fixed plate, a support top plate, a jacking cylinder, a U-shaped support plate, and a support column. The pulley is slidably connected to the slide rail 20, and the pulley is fixedly connected to the fixed plate via a bracket. A jacking port is provided on the fixed plate, and a support top plate is provided at the jacking port. The support top plate is connected to the fixed plate via a jacking cylinder. A U-shaped support plate is inverted above the fixed plate, and the upper middle part of the inverted U-shaped support plate is connected to the support column. The support top plate is driven to be jacked up by the jacking cylinder, and then the U-shaped support plate is jacked up, and finally the T-shaped slider is jacked up by the support column; (3) Restoration and installation of the cantilever beam: At least three sets of support skid vehicles are supported on each side of the two T-shaped sliders on the left and right sides below the cantilever beam. The drilling platform is moved to the side of the dock by a tugboat. The support skid vehicle drives the cantilever beam to the exit position of the sliding groove of the drilling platform. The T-shaped slider on the support skid vehicle is inserted into the exit position of the sliding groove of the drilling platform. After insertion, the top block behind the top wear-resistant plate at the exit position of the sliding groove of the drilling platform is connected to the side of the sliding groove through the upper bolts. The support skid vehicle continues to move. The support skid vehicle moves When it moves to the dock shore, the lifting cylinder on the supporting sliding vehicle close to the dock shore moves downward to disengage the supporting column from the lower end of the T-shaped sliding block, and then the group of supporting sliding vehicles is taken out, and the supporting sliding vehicle away from the dock shore continues to move, and the T-shaped sliding block continues to move along the sliding groove until the supporting sliding vehicle away from the dock shore moves to the dock shore. When the group of supporting sliding vehicles is withdrawn, the supporting sliding vehicles are finally completely withdrawn, and the cantilever beam is completely retracted through the driving connection relationship between the drilling platform and the cantilever beam, and the cantilever beam is finally restored and installed.

[0005] A stopper integrally connected to the sliding groove is provided on the side wall of the sliding groove above the top block in step (1) of the present invention, so that the connection strength of the top block is increased by the stopper to prevent the T-shaped slider from ejecting the top block.

[0006] The drilling platform of the present invention is provided with three pile legs, and the sliding groove is arranged on the drilling platform between the three pile legs.

[0007] The present invention adopts the above structure, and has the advantages of simple method, low cost, good recovery effect, high recovery efficiency, short construction period, high safety, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a position relationship diagram of the drilling platform and the wharf of the present invention.

[0009] Figure 2 It is a connection relationship diagram between the side surface of the cantilever beam of the present invention and the supporting sliding vehicle.

[0010] Figure 3It is a cross-sectional view of the sliding groove of the present invention.

[0011] Figure 4 It is a cross-sectional view of the exit position of the sliding groove of the present invention.

[0012] Figure 5 It is a structural schematic diagram of the supporting skid steer of the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings: As shown in the attached figure, a method for restoring and installing a cantilever beam of a drilling platform dock pile is provided, wherein the steps of the installation method are as follows: (1) Design of drilling platform 1: A sliding groove 2 is provided on the drilling platform 1, and a bottom wear plate 3 is provided at the bottom of the sliding groove 2. A protruding pressure block 4 integrally connected to the side wall of the sliding groove 2 is provided on the drilling platform 1 on the left and right sides of the sliding groove 2. A top block 5 is provided on the left and right sides of the exit position of the sliding groove 2. The side of the top block 5 is detachably connected to the sliding groove 2 by bolts. Through holes are provided on the pressure block 4 and the top block 5 respectively. A clamping groove 6 is provided below the pressure block 4 and the top block 5 respectively. An upper bolt 7 passes through the through hole and is fixedly connected to the threaded hole on the top wear plate 8 in the clamping groove 6. Side wear plates 9 are provided on the left and right sides of the sliding groove 2 below the pressure block 4 respectively. The side wear plates 9 are fixed to the side of the sliding groove 2 by side bolts. The bottom wear plate 3, the side wear plate 9 and the top wear plate 8 are slidably connected to the T-shaped slider 10 of the cantilever beam 11; (2) Design of the dock bearing platform: A slide rail 20 coaxial with the T-shaped slider 10 in the sliding groove 2 is provided on the dock. There are two slide rails 20, each of which is slidably connected to the support sliding vehicle. The support sliding vehicle includes a pulley 12, a fixed plate 13, a support top plate 14, a jacking cylinder 15, a U-shaped support plate 16, and a support column 17. The pulley 12 is slidably connected to the slide rail 20. The pulley 12 is fixedly connected to the fixed plate 13 via a bracket. The fixed plate 13 is provided with a jacking opening. A support top plate 14 is provided at the jacking opening. The support top plate 14 is connected to the fixed plate 13 via a jacking cylinder 15. A U-shaped support plate 16 is inverted above the fixed plate 13. The upper middle part of the inverted U-shaped support plate 16 is connected to the support column 17. The support top plate 14 is lifted up by the jacking cylinder 15, and then the U-shaped support plate 16 is lifted up. Finally, the T-shaped slider 10 is lifted up by the support column 17. (3) Restoration and installation of the cantilever beam 11: At least three sets of support skid vehicles are supported on each side of the two T-shaped sliders 10 on the left and right sides below the cantilever beam 11. The drilling platform 1 is moved to the side of the dock by a tugboat. The support skid vehicle drives the cantilever beam 11 to move to the exit position of the sliding groove 2 of the drilling platform 1. The T-shaped slider 10 on the support skid vehicle is inserted into the exit position of the sliding groove 2 of the drilling platform 1. After insertion, the top block 5 connected to the top wear-resistant plate 8 at the exit position of the sliding groove 2 of the drilling platform 1 is connected to the side of the sliding groove 2 through the upper bolt 7. The support skid vehicle continues to move. When the trolley moves to the dock shore, the lifting cylinder on the supporting sliding trolley close to the dock shore moves downward, disengaging the supporting column 17 from the lower end of the T-shaped slider 10, and then taking out the group of supporting sliding trolleys, and the supporting sliding trolley away from the dock shore continues to move, and the T-shaped slider 10 continues to move along the sliding groove 2 until the supporting sliding trolley away from the dock shore moves close to the dock shore, and then the group of supporting sliding trolleys is withdrawn until the supporting sliding trolley is completely withdrawn, and the cantilever beam 11 is completely retracted through the driving connection relationship between the drilling platform 1 and the cantilever beam 11, and finally the cantilever beam 11 is restored and installed.

[0014] Furthermore, a stopper 18 integrally connected to the sliding groove 2 is provided on the side wall of the sliding groove 2 above the top block 5 in the step (1). The stopper 18 increases the connection strength of the top block 5 and prevents the T-shaped slider 10 from ejecting the top block 5.

[0015] Furthermore, the drilling platform 1 is provided with three pile legs 19 , and the sliding groove 2 is provided on the drilling platform 1 between the three pile legs 19 .

[0016] The present invention satisfies the need for the overall protective restoration and installation of the cantilever beam 11 of the drilling platform 1, avoiding the risk of damage and deformation of the cantilever beam 11, and is suitable for the installation of the cantilever beam 11 during the manufacturing process of the drilling platform 1 or the restoration and installation of the cantilever beam 11 to the original drilling platform 1 after the platform removes the cantilever beam 11 for transformation of the wind power installation platform, solving the problem of insufficient docking time and no need for large-scale lifting equipment. The method reduces the project cost of restoring the cantilever beam 11 of the drilling platform 1, shortens the project construction period, improves construction safety, and avoids damage and deformation of the cantilever beam 11. Due to the use of the above structure, the present invention has the advantages of simple method, low cost, good restoration effect, high restoration efficiency, short construction period, and high safety.

Claims

1. A method for restoring and installing a cantilever beam of a drilling platform pier pile, characterized in that The steps of the installation method are as follows: (1) Design of drilling platform: A sliding groove is provided on the drilling platform, and a bottom wear-resistant plate is provided at the bottom of the sliding groove. A protruding pressure block integrally connected to the side wall of the sliding groove is provided on the drilling platform on the left and right sides of the sliding groove. A top block is provided on the left and right sides of the exit position of the sliding groove. The side of the top block is detachably connected to the sliding groove by bolts. Through holes are provided on the pressure block and the top block respectively. A clamping groove is provided below the pressure block and the top block respectively. The upper bolt passes through the through hole and is fixedly connected to the threaded hole on the top wear-resistant plate in the clamping groove. Side wear-resistant plates are provided on the left and right sides of the sliding groove below the pressure block respectively. The side wear-resistant plates are fixed to the side of the sliding groove by side bolts. The bottom wear-resistant plate, the side wear-resistant plate and the top wear-resistant plate are slidably connected to the T-shaped slider of the cantilever beam. (2) Design of the dock bearing platform: A slide rail coaxial with the T-shaped slider in the sliding groove is provided on the dock. There are two slide rails, each of which is slidably connected to the support sliding vehicle. The support sliding vehicle includes a pulley, a fixed plate, a support top plate, a jacking cylinder, a U-shaped support plate, and a support column. The pulley is slidably connected to the slide rail, and the pulley is fixedly connected to the fixed plate via a bracket. A jacking port is provided on the fixed plate, and a support top plate is provided at the jacking port. The support top plate is connected to the fixed plate via a jacking cylinder. A U-shaped support plate is inverted above the fixed plate, and the upper middle part of the inverted U-shaped support plate is connected to the support column. The support top plate is driven to be jacked up by the jacking cylinder, and then the U-shaped support plate is jacked up, and finally the T-shaped slider is jacked up by the support column; (3) Restoration and installation of the cantilever beam: At least three sets of support skid vehicles are supported on each side of the two T-shaped sliders on the left and right sides below the cantilever beam. The drilling platform is moved to the side of the dock by a tugboat. The support skid vehicle drives the cantilever beam to the exit position of the sliding groove of the drilling platform. The T-shaped slider on the support skid vehicle is inserted into the exit position of the sliding groove of the drilling platform. After insertion, the top block behind the top wear-resistant plate at the exit position of the sliding groove of the drilling platform is connected to the side of the sliding groove through the upper bolts. The support skid vehicle continues to move. The support skid vehicle moves When it moves to the dock shore, the lifting cylinder on the supporting sliding vehicle close to the dock shore moves downward to disengage the supporting column from the lower end of the T-shaped sliding block, and then the group of supporting sliding vehicles is taken out, and the supporting sliding vehicle away from the dock shore continues to move, and the T-shaped sliding block continues to move along the sliding groove until the supporting sliding vehicle away from the dock shore moves to the dock shore. When the group of supporting sliding vehicles is withdrawn, the supporting sliding vehicles are finally completely withdrawn, and the cantilever beam is completely retracted through the driving connection relationship between the drilling platform and the cantilever beam, and the cantilever beam is finally restored and installed.

2. A drilling platform dock pile cantilever beam recovery and installation method according to claim 1, characterized in that In the step (1), a stopper integrally connected to the sliding groove is provided on the side wall of the sliding groove above the top block, and the connection strength of the top block is increased by the stopper to prevent the T-shaped slider from pushing the top block out.

3. A drilling platform dock pile cantilever beam recovery and installation method according to claim 1, characterized in that In the step (1), three pile legs are arranged on the drilling platform, and the sliding groove is arranged on the drilling platform between the three pile legs.

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