Shallow well lifting device and safe hoisting method for offshore platform geological survey

Abstract

The present application relates to the technical field of lifting platform, and discloses a shallow well lifting device and a safe hoisting method for offshore platform geological exploration. When problems occur at the bottom end of the drilling construction equipment on the tower, the staff can first stay in the lifting platform and wait. The lifting platform drives the staff to move downward, so that the staff moves to the lower side of the platform main body, and the staff is adjacent to the bottom end of the drilling construction equipment on the tower, so that the staff can maintain the drilling construction equipment. Therefore, when the staff encounters a fault of the drilling construction equipment during the exploration process, the staff can move to the lower side of the platform main body by riding the shallow well lifting device, so that the staff can maintain the drilling construction equipment. When the drilling construction equipment has problems, the staff can avoid the cumbersome problem that the drilling construction equipment needs to be removed from the sea as a whole for maintenance, and the staff's maintenance method is simplified, and the staff can maintain the device conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting platforms, in particular to a shallow well lifting device and a safe lifting method for geological surveys on offshore platforms. Background Art

[0002] An offshore platform is a truss structure elevated above sea level with a horizontal surface, used for production operations and other activities. Exploration for seabed resources requires the use of mechanical core drilling and offshore platforms to conduct exploration, assess the resource potential of the survey area, and conduct deep prospecting and prediction.

[0003] In existing offshore platforms, such as the offshore platform wind turbine hoisting system and hoisting method disclosed in Publication No. CN105460796A, the blades, nacelle, and tower of the wind turbine can be reasonably arranged on the water platform according to their own shape and structural characteristics. They can be stacked as needed to save space. Each component can be placed in a reasonable position within the working range of the No. 1 crane, No. 2 crane, and derrick crane, making lifting and installation convenient. The cranes work closely with each component to improve assembly efficiency. In addition, the use of a derrick crane can adapt to different assembly processes and adjust the height of each component during the assembly process, making assembly more efficient. The derrick crane has a solid foundation for windproof support, which improves operational safety. The tower assembly auxiliary device, lifting platform, blade installation device, and intermediate installation platform provided in the present invention greatly improve the safety and work efficiency of installation, and can ensure operational safety even in strong winds. The derrick crane is used to achieve lifting operations, and with the help of the tower assembly auxiliary device, lifting platform, blade installation device, and intermediate installation platform, different operating procedures can be adopted according to the environment or wind speed conditions to ensure operational safety and improve work efficiency.

[0004] However, there are still the following problems: During drilling construction, the drill pipe may crack due to the influence of hard objects such as rock formations. Because the drill pipe is too long and is too slow to be retracted, real-time welding is more necessary on the drill pipe. However, manual underwater welding is relatively dangerous. In addition, when lifting and transporting cargo on the ship, the lifting hook will swing with the wind due to the influence of offshore winds. Currently, the workers on the ship first grab the moved hook and then manually hook the hook to the cargo. The strong wind may cause the hook to slip out of the hand and hit someone, posing a major safety hazard. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a shallow well lifting device and a safe lifting method for geological surveys on offshore platforms. The method has the advantages that when the staff encounter a failure in the drilling construction equipment during the exploration process, and the failure is at the bottom, the staff can take the shallow well lifting device to move to the bottom of the platform body, so that the staff can repair the drilling construction equipment, avoiding the cumbersome problem of having to move the entire drilling construction equipment out of the sea for repair when problems occur. The method simplifies the staff's maintenance method, facilitates the staff's maintenance of the device, avoids the staff's need to manually hang the hook on the cargo, prevents the hook from swinging with the wind due to the influence of the offshore wind and flying and hitting people, eliminates the safety hazards in lifting cargo, and improves the overall safety of the device. It solves the problem that when lifting and transporting cargo on the ship, the lifting hook will swing with the wind due to the influence of the offshore wind. If the hook is manually hooked to the cargo, the hook may fly and hit people, posing a major safety hazard.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shallow well lifting device, comprising a platform body, a functional mechanism disposed on the platform body, and a lifting mechanism disposed on the platform body, wherein the functional mechanism comprises a tower, the tower being disposed on the platform body and located at the center of the platform body, a drilling construction device being disposed on the tower, and the tower cooperating with the drilling construction device to perform offshore exploration operations;

[0007] The lifting mechanism includes a lifting platform, which is provided on the platform body and adjacent to the tower. The lifting platform moves up and down to move the position below the platform body.

[0008] A hanger is provided on one side of the platform body, and an auxiliary mechanism is also provided on the platform body, and the auxiliary mechanism includes a berthing dock. The berthing dock is fixedly provided on one side of the platform body, and a rail frame is fixedly installed on one side of the platform body. A movable frame is slidably matched on the rail frame, and a rotating frame is rotatably matched on the movable frame. A limiting guide plate is fixedly installed on the rotating frame, and a conversion arc is provided on the limiting guide plate. The cross-sectional size of the conversion arc is adapted to the hook size of the hanger.

[0009] Preferably, the functional mechanism also includes pile legs, and a plurality of the pile legs are provided at the bottom end of the platform body. The pile legs are symmetrically distributed at the four corners of the platform body. The fixed rods of the pile legs are fixedly set on the seabed, and the extension rods of the pile legs are fixedly connected to the platform body. The pile legs are hydraulic self-lifting equipment, and the pile legs drive the platform body to rise and fall. A moon pool is opened in the center of the platform body, and the moon pool is a square structure. The moon pool is opposite to the position in the sea that needs to be explored.

[0010] Preferably, the tower is fixedly mounted on the platform body, the tower is located above the moon pool, the bottom end of the tower covers the moon pool, the drilling end of the drilling construction equipment on the tower passes through the moon pool, the hanger is adjacent to the edge of the platform body, the hanger is a platform crane, and the hanger is deflected on the platform body to lift cargo outside the platform body onto the platform body.

[0011] Preferably, the lifting mechanism also includes a limiting slide bar, a through opening is opened on the platform body, the through opening of the platform body connects the top and bottom of the platform body, and a plurality of limiting slide bars are fixedly installed in the through opening of the platform body. The limiting slide bars are symmetrically distributed at the corners around the through opening of the platform body, and the limiting slide bar passes through the through opening of the platform body. A limiting ring frame is fixedly installed at the bottom end of the limiting slide bar, and the limiting ring frame limits the bottom end of the limiting slide bar.

[0012] Preferably, the lifting platform is slidably engaged on the limiting slide rod, and the limiting slide rods all pass through the lifting platform. The size of the lifting platform is the same as the size of the through-opening of the platform body. A rotary rod is rotatably engaged on the platform body, and the rotary rod passes through the lifting platform. The rotary rod is threadedly engaged with the rotary rod, and the bottom end of the rotary rod is rotatably engaged with the limiting ring frame. A stepper motor is fixedly installed on the platform body, and the stepper motor is power-connected to the rotary rod.

[0013] Preferably, all ships are docked beside the berthing pier, so that staff can enter the platform body from the berthing pier, and the berthing pier is adjacent to the cradle.

[0014] Preferably, the rail frame is located below the hanger, and a screw is rotatably mounted on the rail frame, the screw passes through the movable frame, the screw is threadedly engaged with the movable frame, the length of the screw is adapted to the length of the rail frame track, a servo motor is fixedly mounted on the rail frame, a driven gear roller is rotatably mounted on the rail frame, the driven gear roller is dynamically connected to the screw, a sprocket is fixedly mounted on the shaft of the servo motor, and a chain is tensioned between the sprocket and the driven gear roller.

[0015] Preferably, a first rotating oil cylinder is fixedly mounted on the movable frame, the first rotating oil cylinder is dynamically connected to the rotating frame, and the length of the rotating frame is adapted to the berthing position of the vessel.

[0016] Preferably, a turntable is rotatably mounted on the rotating frame, the turntable is located in the conversion arc, the size of the turntable is adapted to the cross-sectional size of the conversion arc, a push rod is fixedly mounted on the top of the turntable, the push rod is located at the edge of the turntable, the pushing end of the push rod is at the same height on the turntable as the height of the hook notch of the hanger on the turntable, a second rotating oil cylinder is fixedly mounted on the bottom end of the rotating frame, and the second rotating oil cylinder is dynamically connected to the turntable.

[0017] A safe hoisting method for geological survey of an offshore platform, using the above-mentioned shallow well lifting device, comprises the following steps:

[0018] S1: The vessel is moored at the berthing pier;

[0019] S2: first, the hook of the hanger is placed on the turntable, and the notch of the hook of the hanger is rotated toward the vessel by using the push rod;

[0020] S3: rotating the rotating frame to the side of the cargo on the vessel;

[0021] S4: The hanger is then directly removed from the rotating frame to hook the cargo, and the cargo is hoisted onto the platform body.

[0022] Compared with the prior art, the present invention provides a shallow well lifting device with the following beneficial effects:

[0023] 1. The shallow well lifting device installs the platform body on the required sea surface, utilizes the tower and the drilling construction equipment on the tower to conduct exploration in the sea, and when a problem occurs at the bottom of the drilling construction equipment on the tower, the staff can first stay and wait in the lifting platform, and the lifting platform drives the staff to move downward, so that the staff moves to the bottom of the platform body, so that the staff leans against the bottom of the drilling construction equipment on the tower, so that the staff can repair the drilling construction equipment. When the staff encounters a failure of the drilling construction equipment during the exploration process, and the failure is at the bottom, the staff can take the shallow well lifting device to move to the bottom of the platform body, so that the staff can repair the drilling construction equipment, avoiding the cumbersome problem caused by the need to move the entire drilling construction equipment out of the sea for maintenance when a problem occurs, simplifying the staff's maintenance method, and facilitating the staff to maintain the device.

[0024] 2. The shallow well lifting device utilizes the deflection of the push rod when the hook is in the conversion arc, so that the push rod stably directs the notch of the hook toward the cargo, so that the hook can stably and automatically hook the cargo on the ship in the limit guide plate, thereby avoiding the need for workers to manually hang the hook on the cargo, preventing the hook from swinging in the wind due to the influence of the sea wind and flying into people, eliminating safety hazards in lifting cargo, and improving the overall safety of the device.

[0025] 3. The shallow well lifting device, through the setting of the berthing pier, can have a fixed anchor point for installation when the ship is docked next to the platform body, ensuring that the ship can dock stably and the cargo on the ship will not shake violently, thereby ensuring the stability of the cargo on the ship, and ensuring that the hook can stably and automatically hook onto the cargo, thereby improving the stability of the device operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the shallow well lifting device of the present invention;

[0027] Figure 2 This is a schematic diagram of the main structure of the platform of the present invention;

[0028] Figure 3 This is a schematic diagram of the functional mechanism structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the structural distribution of the lifting mechanism of the present invention;

[0030] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0031] Figure 6 This is a schematic diagram of the structural distribution of the limiting ring frame of the present invention;

[0032] Figure 7 This is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure distribution at the berthing terminal of the present invention;

[0034] Figure 9 This is a schematic diagram of the structural distribution of the servo motor of the present invention;

[0035] Figure 10 This is a schematic diagram of the structure distribution of the rail frame of the present invention;

[0036] Figure 11 This is a schematic diagram of the structure distribution of the push rod of the present invention;

[0037] Figure 12 This is a schematic diagram of the structural distribution of the rotating frame of the present invention.

[0038] In the figure: 1. Platform body; 2. Functional mechanism; 21. Pile legs; 22. Moon pool; 23. Tower; 24. Hanger; 3. Lifting mechanism; 31. Limiting slide bar; 32. Limiting ring frame; 33. Lifting platform; 34. Rotating rod; 35. Stepping motor; 4. Auxiliary mechanism; 41. Berthing terminal; 42. Rail frame; 43. Moving frame; 44. Screw; 45. Servo motor; 46. Driven gear roller; 47. Sprocket; 48. Chain; 49. Rotating frame; 410. First rotating cylinder; 411. Limiting guide plate; 412. Conversion arc; 413. Turntable; 414. Push rod; 415. Second rotating cylinder. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a shallow well lifting device and a safe lifting method for geological surveys on offshore platforms.

[0041] Example 1, a typical embodiment of the present application, as Figure 1 As shown, a shallow well lifting device includes a platform body 1, a functional mechanism 2 provided on the platform body 1, and a lifting mechanism 3 provided on the platform body 1. The functional mechanism 2 includes a tower 23. The platform body 1 is provided with the tower 23, and the tower 23 is located at the center of the platform body 1. The tower 23 is provided with drilling construction equipment, and the tower 23 cooperates with the drilling construction equipment to perform offshore exploration operations.

[0042] The lifting mechanism 3 includes a lifting platform 33. The lifting platform 33 is provided on the platform body 1. The lifting platform 33 is adjacent to the tower 23. The lifting platform 33 moves up and down to move its position below the platform body 1. The staff repairs the drilling and conveying equipment below the platform body 1 on the lifting platform 33.

[0043] Furthermore, the drilling construction equipment is existing technology, and the drilling construction equipment is on the tower 23, specifically an auger or a punch drill for drilling processing, which will not be described in detail here.

[0044] When using the present invention:

[0045] The platform body 1 is installed on the required sea surface, and the tower 23 and the drilling construction equipment on the tower 23 are used to explore the sea. When a problem occurs at the bottom of the drilling construction equipment on the tower 23, the staff can first stay and wait in the lifting platform 33, start the lifting platform 33, and the lifting platform 33 drives the staff to move downward, so that the staff moves to the bottom of the platform body 1, so that the staff is adjacent to the bottom of the drilling construction equipment on the tower 23, so that the staff can repair the drilling construction equipment. Therefore, if the staff encounters a failure of the drilling construction equipment during the exploration process, and the failure is at the bottom, the staff can take the shallow well lifting device to move to the bottom of the platform body 1, so that the staff can repair the drilling construction equipment, avoiding the cumbersome problem caused by the need to move the entire drilling construction equipment out of the sea for repair when a problem occurs, simplifying the staff's maintenance method, and facilitating the staff to maintain the device.

[0046] Example 2, as Figure 2-Figure 3 As shown, the difference from the above embodiment is that the functional mechanism 2 also includes pile legs 21, and a plurality of pile legs 21 are provided at the bottom end of the platform body 1. The pile legs 21 are symmetrically distributed at the corners of the platform body 1. The fixed rods of the pile legs 21 are fixedly set on the seabed, and the extension rods of the pile legs 21 are fixedly connected to the platform body 1. The pile legs 21 are hydraulic self-lifting equipment, and the pile legs 21 drive the platform body 1 to move up and down. A moon pool 22 is opened in the center of the platform body 1. The moon pool 22 is a square structure, and the moon pool 22 is opposite to the position to be explored in the sea.

[0047] Furthermore, the platform body 1 is the offshore platform deck. Specifically, the deck load is 80 tons and the variable load is 200 tons.

[0048] Furthermore, a tower 23 is fixedly mounted on the platform body 1. The tower 23 is located above the moon pool 22. The bottom end of the tower 23 covers the moon pool 22. The drilling end of the drilling construction equipment on the tower 23 passes through the moon pool 22. A hanger 24 is provided on one side of the platform body 1. The hanger 24 is adjacent to the edge of the platform body 1. The hanger 24 is a platform crane. The hanger 24 is deflected on the platform body 1 to lift the cargo outside the platform body 1 onto the platform body 1.

[0049] When the height of the platform body 1 needs to be adjusted, the pile legs 21 are started, and the pile legs 21 drive the platform body 1 to rise and fall, so that the height of the platform body 1 is adjusted. When exploring, the drilling construction equipment on the tower 23 is used to work, and the drilling construction equipment drills into the sea. At the same time, the staff can observe downward at the moon pool 22. When a ship is moored next to the platform body 1, the hanger 24 can be used to lift the cargo on the ship onto the platform body 1.

[0050] Example 3, as Figure 4-Figure 6As shown, the difference from the above embodiment is that the lifting mechanism 3 also includes a limit slide 31, and a through opening is opened on the platform body 1. The through opening of the platform body 1 connects the upper and lower parts of the platform body 1. A plurality of limit slides 31 are fixedly installed in the through opening of the platform body 1. The limit slides 31 are symmetrically distributed at the corners around the through opening of the platform body 1. The limit slide 31 passes through the through opening of the platform body 1. A limit ring frame 32 is fixedly installed at the bottom end of the limit slide 31, and the limit ring frame 32 limits the bottom end of the limit slide 31.

[0051] Furthermore, a lifting platform 33 is slidably engaged on the limit slide 31, and the limit slide 31 passes through the lifting platform 33. The size of the lifting platform 33 is the same as the size of the through-hole of the platform body 1. A rotary rod 34 is rotatably engaged on the platform body 1, and the rotary rod 34 passes through the lifting platform 33. The rotary rod 34 is threadedly engaged with the rotary rod 34, and the bottom end of the rotary rod 34 is rotatably engaged with the limit ring frame 32. A stepper motor 35 is fixedly installed on the platform body 1, and the stepper motor 35 is power-connected to the rotary rod 34.

[0052] When the drilling construction equipment needs to be repaired, the staff stands on the lifting platform 33 and starts the stepper motor 35. The stepper motor 35 drives the rotary rod 34 to rotate. The rotary rod 34 drives the lifting platform 33 to move on the limiting slide bar 31, so that the lifting platform 33 moves to the place where maintenance is required. The staff can stand on the lifting platform 33 to repair the drilling construction equipment, and the bottom end of the lifting platform 33 is limited by the limiting ring frame 32.

[0053] Example 4, as Figure 7-12 As shown, the difference from the above embodiment is that an auxiliary mechanism 4 is further provided on the platform body 1, and the auxiliary mechanism 4 includes a berthing dock 41. The berthing dock 41 is fixedly provided on one side of the platform body 1, and all ships are docked next to the berthing dock 41, so that the staff can log into the platform body 1 from the berthing dock 41, and the berthing dock 41 is adjacent to the hanger 24.

[0054] Furthermore, a rail frame 42 is fixedly installed on one side of the platform body 1, and the rail frame 42 is located below the hanger 24. The upper sliding part of the rail frame 42 is matched with a movable frame 43, and the rail frame 42 is rotatably matched with a screw 44. The screw 44 passes through the movable frame 43, and the screw 44 is threadedly matched with the movable frame 43. The length of the screw 44 is adapted to the length of the track of the rail frame 42. A servo motor 45 is fixedly installed on the rail frame 42, and a driven gear roller 46 is rotatably matched on the rail frame 42. The driven gear roller 46 is power-connected to the screw 44. A sprocket 47 is fixedly installed on the shaft of the servo motor 45, and a chain 48 is tensioned between the sprocket 47 and the driven gear roller 46.

[0055] Furthermore, the movable frame 43 is rotatably coupled with a rotating frame 49 , and a first rotating oil cylinder 410 is fixedly mounted on the movable frame 43 . The first rotating oil cylinder 410 is power-connected to the rotating frame 49 , and the length of the rotating frame 49 is adapted to the berthing position of the vessel.

[0056] Furthermore, a limiting guide plate 411 is fixedly installed on the rotating frame 49, and a conversion arc 412 is opened on the limiting guide plate 411. The cross-sectional size of the conversion arc 412 is adapted to the hook size of the hanger 24. A turntable 413 is rotatably mounted on the rotating frame 49, and the turntable 413 is located in the conversion arc 412. The size of the turntable 413 is adapted to the cross-sectional size of the conversion arc 412. A push rod 414 is fixedly installed on the top of the turntable 413. The push rod 414 is located at the edge of the turntable 413. The pushing end of the push rod 414 is at the same height on the turntable 413 as the height of the hook notch of the hanger 24 on the turntable 413. A second rotating oil cylinder 415 is fixedly installed on the bottom end of the rotating frame 49, and the second rotating oil cylinder 415 is power-connected to the turntable 413.

[0057] Among them, the ship can be moored next to the berthing pier 41. At this time, the ship is parked under the hanger 24. When the cargo on the ship needs to be hoisted onto the platform body 1, the hanger 24 is first started, and the hook of the hanger 24 is moved into the limiting guide plate 411, and the hook of the hanger 24 is moved in the limiting guide plate 411. When the hook of the hanger 24 moves to the turntable 413, it stops moving, and then the second rotating cylinder 415 is started. The second rotating cylinder 415 drives the turntable 413 to rotate, and the turntable 413 drives the push rod 414 rotates, so that the push rod 414 always rotates from one side to the other side in the conversion arc 412 toward the exit end of the limit guide plate 411, so that when the hook of the hanger 24 is facing the cargo, the push rod 414 passes through the notch of the hook and does not contact the hook. When the hook of the hanger 24 is facing the cargo, as the push rod 414 rotates, the push rod 414 will hit the hook arm of the hook, so that the push rod 414 pushes the hook to rotate, thereby turning the notch of the hook in the conversion arc 412 toward the cargo. The servo motor 45 is then started, which drives the sprocket 47 to rotate, the sprocket 47 drives the chain 48 to rotate, the chain 48 drives the driven gear roller 46 to rotate, the driven gear roller 46 drives the screw 44 to rotate, the screw 44 drives the mobile frame 43 to move on the rail frame 42, and at the same time the first rotating oil cylinder 410 is started, the first rotating oil cylinder 410 drives the rotating frame 49 to deflect, so that the rotating frame 49 moves to the side of the lifting position facing the cargo, that is, the limiting guide plate 411 is moved to the lifting position facing the cargo. The hook is placed aside and then continues to be driven by the hanger 24 to continue to move in the limit guide plate 411, so that the hook is directly moved out of the limit guide plate 411 to the lifting position of the cargo, so that the hook directly hooks the cargo on the ship, and the hanger 24 can directly lift the cargo onto the platform body 1, thereby avoiding the need for workers to manually hang the hook on the cargo, preventing the hook from swinging in the wind due to the influence of the sea wind and flying and hitting people, eliminating the safety hazards in lifting cargo and improving the overall safety of the device.

[0058] Working principle of the present invention:

[0059] The platform body 1 is installed on the required sea surface, and the tower 23 and the drilling construction equipment on the tower 23 are used to explore the sea. When a problem occurs at the bottom of the drilling construction equipment on the tower 23, the staff can first stay and wait in the lifting platform 33, start the lifting platform 33, and the lifting platform 33 drives the staff to move downward, so that the staff moves to the bottom of the platform body 1, so that the staff is adjacent to the bottom of the drilling construction equipment on the tower 23, so that the staff can repair the drilling construction equipment. When the staff encounters a failure of the drilling construction equipment during the exploration process, and the failure is at the bottom, the staff can take the shallow well lifting device to move to the bottom of the platform body 1, so that the staff can repair the drilling construction equipment, avoiding the cumbersome problem of having to move the entire drilling construction equipment out of the sea for repair when a problem occurs, simplifying the maintenance method of the staff and facilitating the maintenance of the device by the staff;

[0060] When the height of the platform body 1 needs to be adjusted, the pile legs 21 are activated, and the pile legs 21 drive the platform body 1 to rise and fall, so that the platform body 1 can adjust its height. When conducting exploration, the drilling construction equipment on the tower 23 is used to work, and the drilling construction equipment drills into the sea. At the same time, the staff can observe downwards at the moon pool 22. When a ship is moored next to the platform body 1, the crane 24 can be used to lift the cargo on the ship onto the platform body 1.

[0061] When the drilling construction equipment needs to be repaired, the worker stands on the lifting platform 33 and starts the stepper motor 35. The stepper motor 35 drives the rotary rod 34 to rotate. The rotary rod 34 drives the lifting platform 33 to move on the limit slide 31, so that the lifting platform 33 moves to the place where maintenance is required. The worker can then stand on the lifting platform 33 to repair the drilling construction equipment, and the bottom end of the lifting platform 33 is limited by the limit ring frame 32.

[0062] When the goods are hoisted, the ship can be parked beside the berthing wharf 41, at this time the ship is parked below the lifting frame 24, when the goods on the ship need to be hoisted to the platform body 1, first start the lifting frame 24, move the lifting hook of the lifting frame 24 into the limiting guide plate 411, and make the lifting hook of the lifting frame 24 move in the limiting guide plate 411, stop moving when the lifting hook of the lifting frame 24 moves to the rotating table 413, then start the second rotating oil cylinder 415, the second rotating oil cylinder 415 drives the rotating table 413 to rotate, the rotating table 413 drives the push rod 414 to rotate, so that the push rod 414 always rotates in the outlet direction of the limiting guide plate 411 in the conversion arc opening 412 from one side to the other side, so that the lifting hook of the lifting frame 24 is facing the goods, the push rod 414 passes through the gap of the lifting hook, and does not contact the lifting hook, and when the lifting hook of the lifting frame 24 is opposite to the goods, the push rod 414 will abut against the hook arm of the lifting hook with the rotation of the push rod 414, so that the push rod 414 pushes the lifting hook to rotate, so that the gap of the lifting hook is converted to face the goods in the conversion arc opening 412, then start the servo motor 45, the servo motor 45 drives the sprocket 47 to rotate, the sprocket 47 drives the chain 48 to rotate, the chain 48 drives the driven gear roller 46 to rotate, the driven gear roller 46 drives the screw rod 44 to rotate, the screw rod 44 drives the moving frame 43 to move on the rail frame 42, at the same time, start the first rotating oil cylinder 410, the first rotating oil cylinder 410 drives the rotating frame 49 to deflect, so that the rotating frame 49 moves to the hoisting position beside the goods, that is, the limiting guide plate 411 is moved to the hoisting position beside the goods, then continue to use the lifting frame 24 to drive the lifting hook to continue to move in the limiting guide plate 411, so that the lifting hook is directly moved out of the limiting guide plate 411 to the hoisting position of the goods, so that the lifting hook directly hooks the goods on the ship, so that the lifting frame 24 can directly hoist the goods to the platform body 1, thereby avoiding the need for workers to manually hang the lifting hook on the goods, preventing the lifting hook from flying into the body due to the influence of the sea wind, eliminating the safety hazard in hoisting the goods, and improving the safety of the whole device.

[0063] A safe hoisting method for offshore platform geological exploration uses the shallow well lifting device described above, comprising the following steps:

[0064] S1: the ship is parked beside the berthing wharf 41;

[0065] S2: first move the lifting hook of the lifting frame 24 to the rotating table 413, and use the push rod 414 to rotate the gap of the lifting hook of the lifting frame 24 to face the ship;

[0066] S3: then rotate the rotating frame 49 to the goods on the ship;

[0067] S4: then use the lifting frame 24 to directly move out of the rotating frame 49 to hook the goods, and hoist the goods to the platform body 1.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A shallow well lifting device, comprising a platform body, a functional mechanism disposed on the platform body, and a lifting mechanism disposed on the platform body, characterized in that: The functional mechanism includes a tower, which is provided on the platform body and located at the center of the platform body. Drilling construction equipment is provided on the tower, and the tower cooperates with the drilling construction equipment to perform offshore exploration operations; The lifting mechanism includes a lifting platform, which is provided on the platform body and adjacent to the tower. The lifting platform moves up and down to move the position below the platform body. Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring or rubber cushion, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

2. A shallow well lifting device according to claim 1, characterized in that: The functional mechanism also includes pile legs. A plurality of pile legs are provided at the bottom end of the platform body. The pile legs are symmetrically distributed at the corners of the platform body. The fixed rods of the pile legs are fixedly provided on the seabed, and the extension rods of the pile legs are fixedly connected to the platform body. The pile legs are hydraulic self-lifting devices, and the pile legs drive the platform body to move up and down. A moon pool is provided in the center of the platform body. The moon pool is a square structure, and the moon pool is opposite to the position in the sea that needs to be explored.

3. A shallow well lifting device according to claim 2, characterized in that: The tower is fixedly mounted on the platform body, the tower is located above the moon pool, the bottom end of the tower covers the moon pool, the drilling end of the drilling construction equipment on the tower passes through the moon pool, the hanger is adjacent to the edge of the platform body, the hanger is a platform crane, and the hanger is deflected on the platform body to lift cargo outside the platform body onto the platform body.

4. A shallow well lifting device according to claim 3, characterized in that: The lifting mechanism also includes a limiting slide bar. A through opening is opened on the platform body. The through opening of the platform body connects the top and bottom of the platform body. A plurality of limiting slide bars are fixedly installed in the through opening of the platform body. The limiting slide bars are symmetrically distributed at the corners around the through opening of the platform body. The limiting slide bar passes through the through opening of the platform body. A limiting ring frame is fixedly installed at the bottom end of the limiting slide bar. The limiting ring frame limits the bottom end of the limiting slide bar.

5. A shallow well lifting device according to claim 4, characterized in that: The lifting platform is slidably engaged with the limiting slide rod, and the limiting slide rods all pass through the lifting platform. The size of the lifting platform is the same as the size of the through-hole of the platform body. A rotating rod is rotatably engaged with the platform body, and the rotating rod passes through the lifting platform. The rotating rod is threadedly engaged with the rotating rod, and the bottom end of the rotating rod is rotatably engaged with the limiting ring frame. A stepping motor is fixedly installed on the platform body, and the stepping motor is dynamically connected to the rotating rod.

6. A shallow well lifting device according to claim 5, characterized in that: The ships are all docked beside the berthing pier, so that the staff can enter the platform body from the berthing pier, and the berthing pier is adjacent to the cradle.

7. A shallow well lifting device according to claim 6, characterized in that: The rail frame is located below the hanger, and a screw is rotatably mounted on the rail frame. The screw passes through the movable frame, and the screw is threadedly engaged with the movable frame. The length of the screw is adapted to the length of the rail frame track. A servo motor is fixedly mounted on the rail frame, and a driven gear roller is rotatably mounted on the rail frame. The driven gear roller is dynamically connected to the screw, and a sprocket is fixedly mounted on the shaft of the servo motor. A chain is tensioned between the sprocket and the driven gear roller.

8. A shallow well lifting device according to claim 7, characterized in that: A first rotating oil cylinder is fixedly mounted on the movable frame. The first rotating oil cylinder is dynamically connected to the rotating frame. The length of the rotating frame is adapted to the berthing position of the vessel.

9. A safe hoisting method for geological survey of an offshore platform, using the shallow well lifting device according to claim 8, characterized in that: The following steps are involved: S1: The vessel is moored at the berthing pier; S2: first, the hook of the hanger is placed on the turntable, and the notch of the hook of the hanger is rotated toward the vessel by using the push rod; S3: rotating the rotating frame to the side of the cargo on the vessel; S4: The hanger is then directly removed from the rotating frame to hook the cargo, and the cargo is hoisted onto the platform body.

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