Method for salvaging sunken ship and tapping jack steel cable underwater

Abstract

The invention discloses a sunken ship salvage underwater tapping jack steel cable device, which belongs to the technical field of sunken ship salvage, and comprises an underwater tapping robot, the underwater tapping robot comprises a water spraying drill bit, a propelling device and an umbilical cord, the propelling device is arranged at the tail part of the water spraying drill bit, and the umbilical cord is connected with the propelling device and the water spraying drill bit. The tapping robot is designed to be capable of advancing by being attached to a ship bottom plate, and the robot advances by taking a transverse welding seam of the ship bottom plate or an adjacent tapping robot as a guide track; the head of the robot is provided with a replaceable tool bit and a high-pressure water spraying device, and a channel can be formed below a ship bottom plate; the robot only needs to overcome the resistance of the head during advancing, and the resistance of traditional tapping equipment is obviously increased along with increase of the tapping depth; the underwater channel tapped and drilled by the robot cannot collapse or be damaged due to the support of the upper ship bottom plate, the combination of the ship bottom plate and the mud surface is loose, the tapping efficiency is higher, and the rework rate is low; according to the device and the method, the threading operation of the large-water-depth shipwreck bottom-passing jack can be realized by adopting small equipment.

Description

Technical Field

[0001] The invention relates to the technical field of shipwreck salvage, and in particular to a method for underwater penetration of a heavy-duty steel cable in shipwreck salvage. Background Art

[0002] Publication No. CN113044181B discloses a shipwreck salvage tool in a navigable tunnel and a method of using the same. This salvage method does not require a heavy-duty steel cable to be threaded through the bottom of the ship, but is only applicable to shallow water channels or sea conditions with small underwater surges. In deep-water and large-tonnage salvage, it is still necessary to thread a heavy-duty steel cable through the bottom of the ship and then use an engineering ship to salvage the shipwreck.

[0003] In the field of shipwreck salvage, the underwater penetration of the bottom jack has always been the most difficult part of the salvage project. The traditional method of penetration is to use land-based trenchless equipment to pull the bottom jack from the ship. This method is only suitable for shallow water salvage, and there is no efficient method for deep water salvage.

[0004] Designing a small underwater attack jack equipment can avoid the influence of water depth on the attack jack, and can realize the work of guiding the jack through the bottom of a sunken ship at a great depth. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for underwater penetration of a jack-in-the-water steel cable for salvaging a sunken ship. The equipment and the penetration method can avoid the influence of water depth on the penetration steel cable, and can realize the penetration of the jack-in-the-water steel cable through the bottom of a sunken ship at a great depth.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an underwater penetration cable device for shipwreck salvage, including an underwater penetration robot, the underwater penetration robot includes a water jet drill bit, a propulsion device and an umbilical cord, the propulsion device is arranged at the tail of the water jet drill bit, and the umbilical cord connects the propulsion device and the water jet drill bit.

[0007] Preferably, the propulsion device includes a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are each provided with two groups, a right-handed thread is provided between the two left-handed threads, and a left-handed thread is provided between the two right-handed threads, the left-handed thread and the right-handed thread are adjacent to each other end to end, a bearing is provided in the middle of each left-handed thread and the right-handed thread, a bearing motor is provided on the bearing, the bearing motor drives the left-handed thread and the right-handed thread to rotate, and a water jet drill bit is provided at the end of the bearing.

[0008] Preferably, adjacent left-handed threads and right-handed threads are connected by hinged connection.

[0009] Preferably, each of the left-handed thread and the right-handed thread is driven individually.

[0010] Preferably, the umbilical cord between the left-handed thread and the right-handed thread supplies power to the entire underwater penetration robot and transmits signals, one end of the umbilical cord is connected to the underwater penetration robot, and the other end is connected to the salvage mother ship.

[0011] A method for using an underwater penetration cable for salvaging a sunken ship comprises the following steps: S1. The underwater penetration robot is lowered into the water, and the diver moves the underwater penetration robot to the penetration position at the bottom of the sunken ship, and guides the underwater penetration robot in the forward direction by observing the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral marks; S2, start the underwater penetration robot, which is driven forward by two sets of counter-rotating left-handed and right-handed thread modules. The water jet drill head on the head carries high-pressure water into the mud, and the underwater penetration robot can be adjusted in posture by multiple joints; S3, the underwater penetration robot moves forward in accordance with the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral markers until it emerges from the water; S4. The diver dives to recover the underwater penetration robot, and the end of the underwater penetration robot's tail umbilical cord connected to a small steel wire is pulled through the hull; S5. Replace the bottom steel wire with the lifting steel wire by pulling the small steel wire to replace the large steel wire, thus completing the installation of the bottom steel wire.

[0012] By adopting the technical solution of the present invention, the following beneficial effects can be obtained: The drilling robot of the present invention is designed to be able to move forward in close contact with the bottom plate of the ship, and the robot moves forward according to the transverse weld of the bottom plate of the ship or the adjacent drilling robot as a guide trajectory; the head of the robot is designed with a replaceable cutter head and a high-pressure water spraying device, which can form a channel under the bottom plate of the ship; the robot only needs to overcome the resistance of the head to move forward, while the resistance of traditional drilling equipment increases significantly with the increase of drilling depth; the underwater channel drilled by the robot will not collapse or be damaged because of the support of the upper bottom plate of the ship, and the bottom plate of the ship is loosely combined with the mud surface, so the drilling efficiency is higher and the rework rate is low; the device and method can realize the drilling operation of a deep-sea ship through the bottom of the ship with a thousand pounds using small equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following is a brief description of the contents and symbols in the drawings of this specification: Figure 1 This is a schematic diagram of the structure of the underwater penetration robot; Figure 2 for Figure 1 The robot drilled into the mud along the welds of the hull plates; Figure 3 for Figure 1 The robot moves down the bilge along the weld of the hull plate; Figure 4 for Figure 1 The robot moves along the bottom of the ship; Figure 5 for Figure 1 The robot moves along the bottom of the ship across the bilge; Figure 6 for Figure 1 The robot drilled out of the mud along the ship's plank; The marks in the above figures are: 1. Underwater penetration robot; 2. Water jet drill bit; 3. Left-hand thread; 4. Right-hand thread; 5. Umbilical cord. DETAILED DESCRIPTION

[0014] The following is a detailed description of the embodiments of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, etc., with reference to the accompanying drawings.

[0015] like Figure 1 As shown, the underwater penetration cable device for salvaging a sunken ship comprises an underwater penetration robot 1, which comprises a water jet drill 2, a propulsion device and an umbilical cord 5. The propulsion device is arranged at the tail of the water jet drill 2, and the umbilical cord 5 connects the propulsion device and the water jet drill 2. The propulsion device comprises a left-handed thread 3 and a right-handed thread 4, and the left-handed thread 3 and the right-handed thread 4 are each provided with two groups, and the right-handed thread 4 is arranged between the two left-handed threads 3, and the left-handed thread 3 is arranged between the two right-handed threads 4. The left-handed thread 3 and the right-handed thread 4 are adjacent to each other end to end, and a bearing is arranged in the middle of each left-handed thread 3 and the right-handed thread 4, and a bearing motor is arranged on the bearing, and the bearing motor drives the left-handed thread 3 and the right-handed thread 4 to rotate, and the water jet drill 2 is arranged at the end of the bearing. The water jet drill 2 has a built-in water spraying device to spray water while drilling a hole, thereby reducing the resistance of the drill bit to drill a hole.

[0016] Adjacent left-handed threads 3 and right-handed threads 4 are connected by hinges, and multiple joints can adjust the posture of the underwater penetration robot 1. Each left-handed thread 3 and right-handed thread 4 has a separate power drive, and the thread directions on the surfaces of the left-handed thread 3 and the right-handed thread 4 are opposite, so that the radial forces can offset each other when rotating in the same direction, preventing the direction from deviating when drilling under mud.

[0017] The umbilical cord 5 between the left-handed thread 3 and the right-handed thread 4 supplies power to the entire underwater penetration robot 1 and transmits signals. One end of the umbilical cord 5 is connected to the underwater penetration robot 1, and the other end is connected to the salvage mother ship. Multiple power lines are set in the umbilical cord 5 to supply power to the robot, and signal lines are also set for transmitting signals. A hanging point is set on the underwater penetration robot 1 for fixing the hanging wire rope, which is used for hanging the robot in and out of the water.

[0018] The method for using the underwater penetration cable for salvaging a sunken ship comprises the following steps: S1, such as Figure 2As shown, the underwater penetration robot 1 is lowered into the water, and the diver moves the underwater penetration robot 1 to the penetration position at the bottom of the sunken ship, and guides the underwater penetration robot 1 in the forward direction by observing the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral marks; S2, such as Figure 3 , 4 As shown, the underwater penetration robot 1 is started, and the underwater penetration robot 1 is driven forward by two sets of counter-rotating left-handed thread 3 and right-handed thread 4 modules, and the water jet drill 2 on the head carries high-pressure water into the mud, and the posture of the underwater penetration robot 1 can be adjusted by multiple joints; S3, such as Figure 5 , 6 As shown, the underwater penetration robot 1 moves forward in accordance with the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral markers until it emerges from the water; S4, the diver dives to recover the underwater penetration robot 1, and the tail umbilical cord 5 of the underwater penetration robot 1 is connected to a small steel wire and pulled through the hull; S5. Replace the bottom steel wire with the lifting steel wire by pulling the small steel wire to replace the large steel wire, thus completing the installation of the bottom steel wire.

[0019] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An underwater piercing cable device for salvaging a sunken ship, characterized in that: The underwater penetration robot comprises a water jet drill, a propulsion device and an umbilical cord. The propulsion device is arranged at the tail of the water jet drill, and the umbilical cord connects the propulsion device and the water jet drill.

2. The underwater piercing cable device for salvaging a sunken ship according to claim 1, characterized in that: The propulsion device includes a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are each provided with two groups, a right-handed thread is provided between the two left-handed threads, and a left-handed thread is provided between the two right-handed threads, and the left-handed thread and the right-handed thread are adjacent to each other end to end, a bearing is provided in the middle of each left-handed thread and the right-handed thread, and a bearing motor is provided on the bearing, and the bearing motor drives the left-handed thread and the right-handed thread to rotate, and a water jet drill bit is provided at the end of the bearing.

3. The underwater penetration cable device for salvaging a sunken ship according to claim 2, characterized in that: Adjacent left-handed threads and right-handed threads are connected in a hinged manner.

4. The underwater piercing cable device for salvaging a sunken ship according to claim 3, characterized in that: Each of the left-hand thread and the right-hand thread is driven individually.

5. The underwater piercing cable device for salvaging a sunken ship according to claim 4, characterized in that: The umbilical cord between the left-handed thread and the right-handed thread supplies power to the entire underwater penetration robot and transmits signals. One end of the umbilical cord is connected to the underwater penetration robot, and the other end is connected to the salvage mother ship.

6. A method for using a heavy-duty steel cable for underwater penetration in salvaging a sunken ship, characterized in that: The following steps are involved: S1. The underwater penetration robot is lowered into the water, and the diver moves the underwater penetration robot to the penetration position at the bottom of the sunken ship, and guides the underwater penetration robot in the forward direction by observing the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral marks; S2, start the underwater penetration robot, which is driven forward by two sets of counter-rotating left-handed and right-handed thread modules. The water jet drill head on the head carries high-pressure water into the mud, and the underwater penetration robot can be adjusted in posture by multiple joints; S3, the underwater penetration robot moves forward in accordance with the welds of the hull outer plate, the magnetic detection signals of the inner frame and the lateral markers until it emerges from the water; S4. The diver dives to recover the underwater penetration robot, and the end of the underwater penetration robot's tail umbilical cord connected to a small steel wire is pulled through the hull; S5. Replace the bottom steel wire with the lifting steel wire by pulling the small steel wire to replace the large steel wire, thus completing the installation of the bottom steel wire.

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