Automatic positioning type cement cushion pier hoisting and placing device

Abstract

The invention relates to a cement cushion pier hoisting device, in particular to an automatic positioning type cement cushion pier hoisting device which comprises an underwater automatic positioning power unit and an automatic release hanging bracket, the underwater automatic positioning power unit is detachably arranged on the automatic release hanging bracket, and the lower portion of the automatic release hanging bracket is detachably connected with a cement cushion pier through a hanging belt. The underwater automatic positioning power unit is used for providing rotation power, so that the automatic release hanging bracket drives the cement cushion pier to rotate to the design direction; compared with a common cement pad pier hoisting frame, the underwater automatic positioning power unit is additionally arranged, the hoisting frame can be automatically oriented and stabilize the posture according to a pipeline route, the cement pad pier can be accurately in place without auxiliary adjustment of manual work or an ROV, automatic release of the cement pad pier is completed through a hydraulic transmission device on the hoisting frame, the construction cost is reduced, and the construction efficiency is improved. Meanwhile, the construction quality and efficiency are improved.

Description

Technical Field

[0001] This invention relates to a cement pier hoisting device, and more particularly to an automatic positioning cement pier hoisting device. Background Technology

[0002] Offshore oil and gas fields are mineral areas in the ocean where oil and gas are explored, developed, and produced. Compared to onshore oil and gas fields, the development of offshore oil and gas fields involves more complex technologies, higher costs, and unique engineering challenges.

[0003] Submarine pipelines are an important component of offshore oil and gas fields. With the expansion and upgrading of offshore oil and gas fields, to prevent direct contact and wear or damage when a new pipeline crosses an existing pipeline, the intersection point usually needs to be treated before laying the new pipeline. One method of intersection treatment is to use concrete supports to support the new pipeline, placing the proposed pipeline above the old pipeline to avoid direct contact and distribute the load.

[0004] Currently, divers or ROVs are typically used to assist ship cranes in placing concrete piers. Divers assist the crane in adjusting the orientation of the piers and manually release the piers to place them on the route. The disadvantages of this method are lower construction precision and higher safety risks. If an ROV is used to assist the crane in adjusting the orientation of the piers and to release the piers on the route, the disadvantages are that in shallow waters, the underwater environment is often characterized by a mixture of sediment and suspended material, resulting in poor visibility. Furthermore, obstacles such as fishing nets and reefs can hinder ROV operations, leading to lower construction quality and efficiency, and higher construction costs. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic positioning cement pier hoisting device to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, an automatic positioning type cement pier hoisting device is provided, comprising an underwater automatic positioning power unit and an automatic release gantry, wherein the underwater automatic positioning power unit is detachably mounted on the automatic release gantry, and the automatic release gantry is detachably connected to the cement pier below by a sling, wherein the underwater automatic positioning power unit is used to provide rotational power to the automatic release gantry, so that the automatic release gantry drives the cement pier to rotate to the designed direction.

[0007] Furthermore, the underwater automatic positioning power unit includes a frame, with sleeves fixedly connected to the top corners of the bottom of the frame, and several first lifting lugs fixedly provided on the top.

[0008] Furthermore, electrical equipment and a hydraulic system are fixedly installed within the frame.

[0009] Furthermore, the electrical equipment includes an underwater pressure-resistant electronic compartment and an underwater oil-filled electronic compartment.

[0010] Furthermore, the hydraulic system includes an underwater motor, a hydraulic pump, a filter, a main control valve box, and an oil tank.

[0011] Furthermore, a protective net is fixedly provided on the outer surface of the frame, which is used to enclose the frame.

[0012] Furthermore, a number of thrusters are fixedly installed within the frame, and the thrusters are used to provide rotational power for the underwater automatic positioning power unit.

[0013] Furthermore, the automatic release bracket includes a bracket, and the top of the bracket is fixedly provided with a docking seat, a number of second lifting lugs, and a number of observation and communication equipment mounting seats.

[0014] Furthermore, protective frames for observation and communication equipment are fixedly installed on both short sides of the hanger, and several mounting plate groups, several roller mounting seats, and several main frame supports are fixedly installed at the bottom of the hanger.

[0015] Furthermore, each of the mounting plate assemblies has a movable rod slidably mounted on one side and a mounting pin fixed on the other side. A push rod is slidably mounted on the middle of the bottom of the hanger along the long side. A hydraulic cylinder is fixed on the main frame support in the middle of the bottom of the hanger.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves precise positioning of the concrete pier by controlling the thrust of the propeller within the underwater automatic positioning power unit in conjunction with the ship's crane. Then, it automatically releases the concrete pier's lifting straps by controlling the hydraulic transmission device on the automatic release gantry, completing the placement of the concrete pier. Compared to commonly used concrete pier lifting frames, by adding the underwater automatic positioning power unit, the gantry can automatically orient and stabilize itself according to the pipeline route, enabling precise positioning of the concrete pier without manual or ROV assistance. The automatic release of the concrete pier via the hydraulic transmission device on the gantry reduces construction costs while improving construction quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall invention; Figure 2 This is a schematic diagram of the overall underwater automatic positioning power unit of the present invention; Figure 3 This is a bottom view of the underwater automatic positioning power unit of the present invention; Figure 4 This is a top view of the underwater automatic positioning power unit of the present invention; Figure 5 This is a schematic diagram of the automatic release bracket of the present invention; Figure 6 This is a bottom view of the automatic release bracket of the present invention; Figure 7 This is a side view of the automatic release bracket of the present invention.

[0018] Figure label: 1. Frame; 2. Sleeve; 3. First lifting lug; 4. Underwater pressure-resistant electronic compartment; 5. Underwater oil-filled electronic compartment; 6. Underwater motor; 7. Hydraulic pump; 8. Filter; 9. Main control valve box; 10. Oil tank; 11. Protective net; 12. Thruster; 13. Lifting frame; 14. Docking seat; 15. Second lifting lug; 16. Viewing and communication equipment mounting seat; 17. Viewing and communication equipment protective frame; 18. Mounting plate assembly; 19. Roller mounting seat; 20. Main frame support; 21. Movable rod; 22. Mounting pin; 23. Push rod; 24. Hydraulic cylinder; 25. Underwater automatic positioning power unit; 26. Automatic release lifting frame; 27. Cement pad; 28. Lifting strap; 29. ​​Lifting sling. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] This embodiment provides an automatic positioning type cement pier hoisting device, such as... Figure 1 As shown, it includes an underwater automatic positioning power unit 25 and an automatic release gantry 26. The underwater automatic positioning power unit 25 is detachably mounted on the automatic release gantry 26. The automatic release gantry 26 is detachably connected to the concrete pier 27 via a sling 28. The underwater automatic positioning power unit 25 is used to provide rotational power to the automatic release gantry 26, so that the automatic release gantry 26 drives the concrete pier 27 to rotate to the designed direction.

[0021] like Figure 2 As shown, the underwater automatic positioning power unit 25 includes a frame 1, such as... Figure 3 As shown, sleeves 2 are welded to the four corners of the bottom of the frame 1, and four first lifting lugs 3 are fixed on the top.

[0022] Frame 1 is welded from square steel and steel plates; the bottom of frame 1 includes ten square steel bars and several steel plates, providing installation positions for electrical equipment and hydraulic systems; The middle part of frame 1 consists of four vertical long steel plates, which are connected to the square steel at the bottom and top of frame 1 by welding. The long steel plates have four inward through holes and two outward through holes in the middle. The inward through holes are used for the installation of the protective netting 11 on the side of frame 1, while the outward through holes provide installation positions for observation and communication equipment.

[0023] The top of frame 1 consists of six square steel bars and four steel plates, which provide support for the top of frame 1 and also provide installation positions for the pusher 12 and the protective net 11 on the top of frame 1.

[0024] The docking post on the docking seat 14 is inserted into the corresponding sleeve 2, and at the same time, the right-angled steel plate fixed with bolts is inserted into the groove of the docking post, connecting the underwater automatic positioning power unit 25 and the automatic release gantry 26.

[0025] Electrical equipment and a hydraulic system are fixedly installed inside frame 1.

[0026] The electrical equipment includes an underwater pressure-resistant electronic compartment 4 and an underwater oil-filled electronic compartment 5.

[0027] The underwater pressure-resistant electronic compartment 4 is a dry pressure-resistant compartment used to provide installation locations for electronic and electrical components that should not come into contact with oil underwater. It relies on the strength of its own outer shell to protect the internal electronic components underwater.

[0028] The main functions of the underwater oil-filled electronic compartment 5 are to integrate underwater high-voltage power supply, 220V power conversion and fiber optic communication connection, and to balance the underwater pressure through its internal compensator and oil.

[0029] like Figure 4 As shown, the hydraulic system includes an underwater motor 6, a hydraulic pump 7, a filter 8, a main control valve box 9, and an oil tank 10. The hydraulic system provides power and controls the hydraulic cylinders 24 on the thruster 12 and the boom 13.

[0030] A protective net 11 is fixedly installed on the outer surface of the frame 1. The protective net 11 is used to enclose the frame 1.

[0031] The protective net 11 is composed of steel plates and steel bars welded together. The steel plates form the outer shape of the protective net 11, and steel bars are welded inside to form a mesh. Installation holes are set on the outer steel plates.

[0032] Four thrusters 12 are fixedly installed inside the frame 1. The thrusters 12 are used to provide rotational power for the underwater automatic positioning power unit 25.

[0033] In this embodiment, the thruster 12 consists of four high-thrust hydraulic propellers, which are arranged at the four corners along the tangent direction of the arc with the geometric center of the frame 1 as the center, to provide power for the device to rotate underwater.

[0034] like Figure 5 As shown, the automatic release hanger 26 includes a hanger 13, with a docking seat 14, six optional second lifting lugs 15, and two sets of observation and communication equipment mounting seats 16 fixedly mounted on the top of the hanger 13. Four docking columns are fixedly mounted on the docking seat 14, and each docking column has a groove at its top for accommodating steel plates.

[0035] Six sets of optional second lifting lugs 15 are used for the overall hoisting of the automatic release gantry 26.

[0036] The two sets of observation and communication equipment mounting bases 16 are used to install observation and communication equipment such as electric pan-tilt units, sonar, underwater cameras, and underwater lights.

[0037] The hanger 13 consists of two H-shaped longitudinal beams and ten H-shaped transverse beams. Corner support plates are welded between the longitudinal beams and transverse beams to alleviate stress concentration.

[0038] The two short sides of the hanger 13 are each fixedly equipped with a viewing and communication equipment protective frame 17, such as Figure 6 As shown, the bottom of the hanger 13 is fixedly installed with six sets of mounting plates 18, four sets of roller mounting seats 19 and four main frame supports 20, and rollers are rotatably installed on the roller mounting seats 19.

[0039] The observation and communication equipment protection frame 17 is used to protect the observation and communication equipment that protrudes from the hanger 13 on the observation and communication equipment mounting base 16.

[0040] Mounting plate assembly 18 consists of six sets welded together from two mounting plates, eight elbow plates, and one connecting plate. Each mounting plate has four through holes: two mounting holes and two bolt through holes.

[0041] like Figure 7 As shown, movable rods 21 are slidably provided on one side of the mounting plate assembly 18, and multiple movable rods 21 form a movable rod assembly. Mounting pins 22 are fixedly provided on the other side. Push rods 23 are slidably provided along the long side at the bottom center of the hanger 13. Hydraulic cylinders 24 are fixedly provided on the main frame support 20 at the bottom center of the hanger 13.

[0042] The movable rod assembly passes through two mounting holes on one side of the mounting plate assembly 18 and is connected to the push rod 23 by a spherical bearing. It is used to mount the movable end of the sling 28 and release the sling 28 at the target position to place the cement pad 27.

[0043] The mounting pin 22 passes through the two mounting holes on the other side of the mounting plate assembly 18 and does not move after the fixed end of the mounting sling 28 is mounted, so that the sling 28 can be retrieved after the cement pad 27 is laid. The push rod 23 is an H-beam, driven by a hydraulic cylinder 24, and guided by rollers on the roller mounting seat 19, which drives the movable rod assembly connected by the spherical bearing to complete the loading and unloading of the sling 28.

[0044] The fixed end of the sling 28 is manually attached to the mounting pin 22.

[0045] The hydraulic cylinder 24 is controlled to move to the middle position, which simultaneously drives the push rod 23 and the movable rod assembly, so that the end of the movable rod moves to the middle of the two mounting plates, making room for the sling 28 to be mounted. Then, the movable end of the sling 28 is manually passed through the through hole of the cement block 27 and mounted on the movable rod 21.

[0046] After the movable end of the sling 28 is attached, the hydraulic cylinder 24 is controlled to retract to the fully retracted position, which simultaneously drives the push rod 23 and the movable rod assembly, so that the movable rod completely passes through the two mounting plates, thus restricting the movable end of the sling 28 to the movable rod 21.

[0047] The sling 29 passes through the second lifting lug 15 and connects to the crane hook of the working vessel. The automatic release jack 26 is lifted to the target position by the working vessel. The rotation direction is input into the terminal of the water integrated control system. After the control signal is processed by the software, it is transmitted in real time to the underwater pressure-resistant electronic compartment 4 of the underwater automatic positioning power unit 25 via the umbilical cable. After receiving the instruction, the control system inside the underwater pressure-resistant electronic compartment 4 calls the corresponding algorithm to drive the thruster 12 to start moving, which drives the underwater automatic positioning power unit 25 to rotate, thereby adjusting the direction of the automatic release jack 26 and realizing the precise positioning of the cement pier 27.

[0048] After the cement block 27 is precisely positioned, the control signal for releasing the cement block 27 is input to the underwater automatic positioning power unit 25 through the terminal of the water integrated control system. This controls the hydraulic system to drive the hydraulic cylinder 24 on the gantry 13, causing the hydraulic cylinder 24 to be pushed out to the fully extended position. This drives the push rod 23 and the movable rod group to push the movable rod 21 out of the gap between the two mounting plates, releasing the movable end of the sling 28 and placing the cement block 27 into the target position.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic positioning type cement pier hoisting device, characterized in that, It includes an underwater automatic positioning power unit (25) and an automatic release gantry (26). The underwater automatic positioning power unit (25) is detachably mounted on the automatic release gantry (26). The automatic release gantry (26) is detachably connected to the cement pier (27) below by a sling (28). The underwater automatic positioning power unit (25) is used to provide rotational power to the automatic release gantry (26), so that the automatic release gantry (26) drives the cement pier (27) to rotate to the designed direction.

2. The automatic positioning type cement pier hoisting device according to claim 1, characterized in that, The underwater automatic positioning power unit (25) includes a frame (1), with sleeves (2) fixedly connected to the top corners of the bottom of the frame (1), and several first lifting lugs (3) fixedly provided on the top.

3. The automatic positioning type cement pad hoisting device according to claim 2, characterized in that, Electrical equipment and a hydraulic system are fixedly installed inside the frame (1).

4. The automatic positioning type cement pad hoisting device according to claim 3, characterized in that, The electrical equipment includes an underwater pressure-resistant electronic compartment (4) and an underwater oil-filled electronic compartment (5).

5. The automatic positioning type cement pier hoisting device according to claim 3, characterized in that, The hydraulic system includes an underwater motor (6), a hydraulic pump (7), a filter (8), a main control valve box (9), and an oil tank (10).

6. The automatic positioning type cement pier hoisting device according to claim 3, characterized in that, The outer surface of the frame (1) is fixedly provided with a protective net (11), which is used to enclose the frame (1).

7. The automatic positioning type cement pad hoisting device according to claim 2, characterized in that, Several thrusters (12) are fixedly installed inside the frame (1), and the thrusters (12) are used to provide rotational power for the underwater automatic positioning power unit (25).

8. The automatic positioning type cement pad hoisting device according to claim 1, characterized in that, The automatic release bracket (26) includes a bracket (13), and the top of the bracket (13) is fixedly provided with a docking seat (14), a number of second lifting lugs (15) and a number of observation and communication equipment mounting seats (16).

9. The automatic positioning type cement pad hoisting device according to claim 8, characterized in that, The two short sides of the hanger (13) are fixedly installed with a viewing equipment protection frame (17), and the bottom of the hanger (13) is fixedly installed with a number of hanging plate groups (18), a number of roller mounting seats (19) and a number of main frame supports (20).

10. The automatic positioning type cement pad hoisting device according to claim 1, characterized in that, The mounting plate assembly (18) has a movable rod (21) slidably provided on one side and a mounting pin (22) fixedly provided on the other side. The bottom center of the hanger (13) has a push rod (23) slidably provided along the long side direction. The bottom center of the hanger (13) has a hydraulic cylinder (24) fixedly provided on the main frame support (20) at the bottom center.

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