Marine adjustable salvage device and salvage method

Abstract

The invention relates to the field of hoisting equipment in ships, in particular to a marine adjustable salvage device and a salvage method. An adjustable fishing device for a ship comprises a steering mechanism, the steering mechanism comprises a rotating seat and a base which are arranged up and down, a suspension arm is fixedly arranged on the rotating seat, winding equipment is arranged on the rotating seat or the suspension arm, and a lifting rope used for lifting an object to be fished is wound on the winding equipment; the adjustable fishing device for the ship further comprises a guide moving seat located at the bottom of the base, the base can be locked and arranged on the guide moving seat in a guiding mode, and then adjustment is conducted when the size of the lifted to-be-fished object is different, for example, when the to-be-fished object is small, the position of the base is adjusted to enable the length, extending out of the ship, of the suspension arm to be shortened; the problems that in the prior art, a salvage device is located at the fixed position of a ship, so that a salvaged object is prone to colliding with a ship board when being large, and when the object to be salvaged is transferred to a deck when being small, the object to be salvaged shakes greatly, and unsafety is caused are solved.

Description

Technical Field

[0001] The invention relates to the field of lifting equipment in ships, and in particular to an adjustable salvaging device and a salvaging method for ships. Background Art

[0002] During the shipbuilding process, some equipment needs to be tested. Specifically, these equipment are put into the water, soaked in water, and then salvaged onto the ship and installed on the hull for use. Usually, a rope is tied to the equipment before putting it into the water. After putting it into the water, the equipment is towed to the side of the ship and lifted manually. As ships become larger, the weight of these equipment is getting heavier, and it is no longer enough to move these equipment manually. Therefore, lifting and salvaging equipment is also installed on ships in the prior art.

[0003] For example, a Chinese utility model patent with an authorization announcement date of December 3, 2014 and an authorization announcement number of CN203975179U discloses a shallow-water salvage device, which includes a steering device fixedly mounted on a hull, the steering device including a base for fixedly connecting to the hull and a rotating seat for fixedly connecting to the boom of the salvage device, and the rotating seat and the base can rotate relative to each other. A pulley is rotatably mounted on the end of the boom away from the rotating seat, and a winch is also mounted on the rotating seat. A cable is wound around the winch, and the cable passes over the pulley and extends to the water surface. An excavation claw or a salvage net (salvage structure) is connected to the end of the cable to facilitate excavation and salvage. When in use, first control the winch to rotate to loosen the cable and place the salvage structure below the water surface. After the salvage structure is connected to the object to be salvaged, start the winch to lift the object to be salvaged until it exceeds the height of the ship's side. Then use the steering device to steer the boom to facilitate the transfer of the object to be salvaged to the ship's side.

[0004] However, in the above technical solution, when the steering device is used to steer the boom, the objects to be salvaged will rotate. Generally, personnel standing on the deck need to hold the objects to be salvaged by hand or use metal rods to limit the position of the objects to be salvaged to prevent the objects to be salvaged from shaking violently and causing safety hazards. Therefore, the lifting device generally suspends the end of the lifting arm away from the rotating seat out of the ship, and in order to facilitate the straightening of the objects to be salvaged, the objects to be salvaged will be lifted by the cable closer to the ship's side. Since the length of the boom extending out of the ship's side is fixed, the lifting equipment varies in size. For larger objects, it is easy to hit the ship's side; for smaller objects, it will cause a large distance from the ship's side, and it is easy to cause a large shaking when transferring to the deck of the ship, posing a safety hazard. Summary of the invention

[0005] In view of this, the present invention provides an adjustable ship salvaging device to solve the problem in the prior art that the salvaging device is located at a fixed position on the ship, which makes it easy for the salvaged objects to collide with the ship's side when they are large, and when the objects to be salvaged are small, the objects to be salvaged will be shaken greatly when being transferred to the deck, resulting in insecurity; the present invention also provides a ship salvaging method to solve the above-mentioned technical problems.

[0006] A ship-based adjustable salvaging device includes a steering mechanism, the steering mechanism includes a rotating seat and a base which are arranged up and down and can rotate relative to each other, a boom for being suspended outside the ship during lifting is fixedly arranged on the rotating seat, a winding device is arranged on the rotating seat or the boom, a lifting rope for lifting the object to be salvaged is wound on the winding device, the ship-based adjustable salvaging device also includes a guide movable seat located at the bottom of the base for being fixedly connected to the deck of the ship, the base can be locked and guided on the guide movable seat, so that the length of the boom extending outside the ship during lifting can be changed as the position of the base on the guide movable seat changes.

[0007] Furthermore, a slide groove is arranged on the guide movable seat, and a limit block adapted to the slide groove is arranged on the base.

[0008] Furthermore, the slide groove is a dovetail groove, and the limit block is a dovetail block adapted to the slide groove.

[0009] Furthermore, the slide groove is provided with a plurality of first limit holes arranged at intervals along the length direction, and the limit block is provided with a second limit hole, so as to complete the relative locking of the limit block and the slide groove after the limit pin passes through the first limit hole and the second limit hole in sequence.

[0010] Furthermore, the base includes a support rod and a diagonal brace fixed between the support rod and the limit block.

[0011] Furthermore, the rotating seat includes a vertically arranged rotating rod and a winding installation rod arranged perpendicular to the rotating rod, the winding installation rod is provided with the winding device, and the end of the boom away from the rotating seat is also provided with a roller for winding the lifting rope.

[0012] Furthermore, the ship-based adjustable salvage device also includes a righting mechanism, which includes a base fixed on the deck of the ship and arranged at an interval with the steering mechanism, and a telescopic rod with adjustable length is hingedly connected to the base, and the end of the telescopic rod has an abutment end for contacting the object to be salvaged and maintaining the stability of the object to be salvaged during the lifting process.

[0013] Furthermore, the base and the telescopic rod are connected via a ball joint.

[0014] Furthermore, the telescopic rod includes a plurality of telescopic sections which are nested and each telescopic section can slide relatively under the action of an external force.

[0015] Furthermore, the abutment end is an abutment ring arranged at the end of the telescopic rod.

[0016] The beneficial effects of the adjustable ship salvaging device in the present invention are as follows: the adjustable ship salvaging device in the present invention is convenient for rotation during the salvaging process by arranging a steering mechanism; by arranging a rotating seat and a base on the rotating mechanism, and arranging a crane arm on the rotating seat, it is convenient to rotate the objects to be salvaged on the outside of the ship to the inside of the deck of the ship during rotation; by arranging a winding device, it is convenient to automatically wind up the lifting rope, thereby facilitating the lifting of the objects to be lifted connected to the lifting rope, thereby avoiding the difficulty of manual lifting; by fixing a guide movable seat on the ship, the base is lockably and guideably arranged on the guide movable seat, thereby facilitating the relative movement of the base and the guide movable seat, thereby allowing the relative position of the crane arm and the ship to be changed, and then adjusting when the sizes of the objects to be salvaged are different. For example, when the objects to be salvaged are small, the position of the base is adjusted to shorten the length of the crane arm extending out of the ship, which can be The jib crane is used to support the object to be salvaged during rotation; when the object to be salvaged is large, the position of the base is adjusted so that the length of the boom extending out of the ship becomes longer, thereby avoiding collision between the object to be salvaged and the side of the ship; by arranging a righting mechanism, and the righting mechanism includes a base arranged at an interval from the steering mechanism, it is convenient to arrange the righting mechanism and the steering mechanism at different positions respectively, and to facilitate separate adjustment of the steering mechanism; by arranging a telescopic rod and arranging an abutment end at the end of the telescopic rod, it is convenient to contact with the object to be salvaged in real time during the salvage process; since the telescopic rod is a hard rod, it can provide supporting force in different directions from the lifting rope, thereby facilitating the maintenance of the position of the lifting rope, making it difficult for the object to be salvaged to shake, thereby solving the problem in the prior art that the salvage device is located in a fixed position on the ship, which makes it easy to collide with the side of the ship when the object to be salvaged is large, and when the object to be salvaged is small, the transfer to the deck will cause the object to be salvaged to shake greatly, resulting in insecurity.

[0017] A ship salvaging method uses the above-mentioned adjustable ship salvaging device. First, the position of the steering mechanism is adjusted and fixed according to the size of the object to be salvaged, and then the winding device is started. During the process of the winding device winding up the lifting rope and the object to be salvaged rising, the end of the telescopic rod of the righting mechanism is maintained in contact with the salvaged object.

[0018] The beneficial effect of the ship salvage method of the present invention is that: by using the above-mentioned adjustable ship salvage device, during the salvage process, the position can be adjusted conveniently by using the adjustable salvage device, and the salvage position can be adjusted conveniently, thereby adjusting the distance between the object to be salvaged and the ship's side during the lifting process; because the end of the telescopic rod is always in contact with the object to be salvaged, the object to be salvaged is provided with an upward force by the lifting rope, and an inclined force by the telescopic rod at the same time, and the above two forces are convenient to limit the end of the lifting rope, avoiding the swing of the lifting rope and the object to be salvaged on the lifting rope, thereby solving the problem in the prior art that the salvage device is located in a fixed position on the ship, which makes it easy for the salvaged object to collide with the ship's side when it is large, and when the object to be salvaged is small, the transfer to the deck will cause the object to be salvaged to shake greatly, resulting in insecurity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 1 is a schematic structural diagram of an embodiment of the adjustable salvaging device for ship of the present invention (for the convenience of illustration, the connection relationship with the ship is shown);

[0021] Figure 2 It is a structural schematic diagram of an embodiment of an adjustable marine salvaging device of the present invention;

[0022] Figure 3 It is a cross-sectional view of the guide direction of the vertical base in the embodiment of the adjustable marine salvaging device of the present invention.

[0023] The meanings of the numbers in the figure are: 1. hull; 21. support rod; 22. diagonal brace; 23. limit block; 31. guide moving seat; 32. limit pin; 41. rotating rod; 42. winding installation rod; 43. boom; 44. roller; 45. turntable; 51. winch; 52. lifting rope; 53. hook; 54. hand crank; 61. telescopic rod; 62. fixed seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0025] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0026] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0027] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0030] In the embodiment 1 of the adjustable salvaging device for ship (hereinafter referred to as salvaging device) of the present invention:

[0031] like Figure 1As shown, the salvage device in this embodiment is located on the deck of the ship. Specifically, the salvage device in this embodiment includes, from bottom to top, a guide movable seat 31 for being fixedly arranged on the deck of the ship. A steering mechanism is installed on the guide movable seat 31. The steering mechanism includes a rotating seat and a base arranged up and down and relatively rotatable, wherein the base is installed on the guide movable seat 31. A boom 43 for hanging out of the ship during lifting is fixedly arranged on the rotating seat. A winding device is arranged on the boom 43. A lifting rope 52 for lifting the salvaged object is wound on the winding device.

[0032] like Figure 2 and Figure 3 As shown, specifically, a slide groove is provided on the guide movable seat 31, and the base includes a support rod 21, and a limit block 23 adapted to the slide groove is provided at the bottom of the support rod 21, thereby meeting the requirement that the base guide slide is provided on the guide movable seat 31. In order to prevent the base from slipping out of the slide groove during the movement, the slide groove is set as a dovetail groove, and the limit block 23 is set as a dovetail block adapted to the above-mentioned slide groove, so that the base will not easily slip out during the sliding process. In addition, during the salvage operation, it is necessary to meet the requirement that the base is fixed, so it is necessary to lock the base on the guide movable seat 31 during the salvage operation. In this embodiment, a plurality of first limit holes arranged vertically and spaced along the length direction of the guide movable seat 31 are provided on the slide groove, and a second limit hole is provided on the limit block 23. The second limit hole can be adjusted to a position corresponding to the first limit hole, and the relative fixation of the base and the guide movable seat 31 can be completed after the positions of the two correspond and the limit pins 32 are installed in the first limit hole and the second limit hole. The second limiting holes are matched with the first limiting holes at different positions to meet the adjustment of the position of the base on the guide movable seat 31.

[0033] Of course, in other embodiments, a convex strip may be provided on the guide movable seat, and a groove adapted to the convex strip may be provided on the base, so as to realize the guiding cooperation between the base and the guide movable seat. Alternatively, in other embodiments, a limit block may no longer be provided on the base, and the base itself is in the form of a limit block. Alternatively, in other embodiments, the slide groove may no longer be provided as a dovetail groove, but may be provided as a U-shaped groove or a square groove. Alternatively, in other embodiments, a second limit hole may no longer be provided on the limit block, and the first limit hole located on the guide movable seat is still provided at this time, and the spacing between the two first limit holes is set to be equal to the length of the base. After the base is moved into place, limit pins are respectively installed on the first limit holes and the end face of the base is stopped and limited. Alternatively, in other embodiments, the second limiting hole may no longer be provided on the limiting block, and a first limiting hole may be provided on the slide groove. The first limiting hole is a threaded hole, and the base is limited by inserting a top screw into the first limiting hole. Since the base is relatively short, multiple first limiting holes still need to be provided, and the distance between two adjacent limiting holes is less than the length of the base. At this time, the base can be infinitely adjusted.

[0034] In order to achieve the stable supporting function of the base, the base also includes a diagonal brace 22, and there are four diagonal braces 22, which are evenly spaced along the circumference of the support rod 21. Two of them are connected between the support rod 21 and the deck of the ship, and the other two are connected between the support rod 21 and the base. In this way, during the movement of the base, only the two diagonal braces 22 located between the support rod 21 and the deck of the ship need to be adjusted, reducing the number of diagonal braces 22 that need to be reinstalled. In order to fix the diagonal brace 22 between the deck and the support rod 21, a mounting hole fixedly connected to the bottom end of the diagonal brace 22 is provided on the deck. Of course, spot welding can also be used. When the position needs to be changed, an angle grinder is used to grind the welding position.

[0035] The rotating seat includes a rotating rod 41 arranged vertically and rotating relative to the support rod 21 and a winding installation rod 42 arranged perpendicular to the rotating rod 41. A turntable 45 is arranged between the rotating rod 41 and the support rod 21 so that the two can rotate relative to each other. A suspension arm 43 is also arranged at the upper end of the rotating rod 41, and the suspension arm 43 is arranged obliquely. A winding device is arranged at the end of the winding installation rod 42. In this embodiment, the winding device is a winch 51, and a lifting rope 52 is wound on the winch 51. The lifting rope 52 is wound by the winch 51 to facilitate the lifting of the salvaged items. At the same time, a roller 44 for the lifting rope 52 to change direction is also arranged at the end of the suspension arm 43 away from the rotating seat. One end of the lifting rope 52 is wound on the winch 51, and the other end passes through the roller 44 in turn to realize the rope reversal and then extends downward, so as to be conveniently connected to the object to be salvaged. A hook 53 is arranged at the end of the lifting rope 52 to facilitate the lifting function. The lifting rope 52 in this embodiment refers to a flexible rope that can withstand a certain torque, including a wire rope or an iron chain. In order to prevent the reel from missing the recovery position due to reeling too quickly at the end of the reeling stroke, a hand crank 54 for manual reeling is also provided on the reeling mounting rod. Of course, in other embodiments, a roller may no longer be provided, but a winch may be directly provided on the boom. Alternatively, in other embodiments, the reeling device may also be an electric hoist or a motor with a winding wheel on the output shaft.

[0036] During the lifting process, the lifting rope 52 needs to be lowered from the ship to the water surface. The lifting rope 52 extends for a long length. If the lifting is performed directly, the objects to be salvaged will swing on behalf of the lifting rope 52, which may hit the side of the ship and even cause safety risks. In this embodiment, the adjustable marine salvage device also includes a righting mechanism, which includes a base fixed on the deck of the ship and arranged at intervals with the steering mechanism, and the base is a vertically arranged fixed rod. A telescopic rod 61 with adjustable length is hingedly provided on the upper part of the fixed rod, and the end of the telescopic rod 61 has an abutment end for contacting with the objects to be salvaged and maintaining the stability of the objects to be salvaged during the lifting process. In order to realize the telescopic function, the telescopic rod 61 includes a plurality of nested telescopic sections, and each telescopic section can slide relative to each other under the action of external force, that is, passive adjustment of the telescopic rod 61 is realized. Of course, the telescopic rod can also be an electric telescopic rod, in which case active adjustment is realized.

[0037] In order to achieve the straightening effect, the abutting end is an abutting ring arranged at the end of the telescopic rod 61, and the abutting ring can assist the hook on the lifting rope 52 to hook on the salvaged object when the hook is hung on the object to be salvaged. At the same time, it can also play a certain straightening effect on the salvaged object and the lifting rope 52 during the lifting process. Specifically, since the extension directions of the telescopic rod 61 and the lifting rope are inconsistent, the forces on the salvaged object are inconsistent, and a horizontal separation will be generated on the telescopic rod 61, thereby reducing the shaking of the hook in the horizontal direction, thereby reducing the shaking of the object to be salvaged. During the salvage process, when the rotating mechanism rotates relatively, the telescopic rod 61 also needs to rotate, so a ball joint is provided between the base and the telescopic rod 61, thereby realizing the multi-angle adjustment of the telescopic rod 61. Of course, in other embodiments, the abutting end can also be set as a magnetic suction end, and the magnetic force is used to limit the hook for convenient hooking. Or, in other embodiments, the base and the telescopic rod are hinged by a pin shaft, and a rotating seat is also provided on the base to facilitate the multi-angle adjustment of the telescopic rod. Or, in other embodiments, the base is only hinged to the telescopic rod through a pin. When hoisted above the deck and required to be rotated, the telescopic rod is disconnected from the object to be salvaged.

[0038] Specifically, when in use, first extend the boom 43 out of the ship, start the winch 51 to unwind the lifting rope 52, stop when the object to be salvaged is placed under the hook, use the telescopic rod 61 to assist the hook in hooking, and after the hooking is completed, maintain the contact and straightening of the telescopic rod 61 with the object to be salvaged. Then start the winch 51, reel in the lifting rope 52, and the object to be salvaged will gradually rise. During the rising process, the telescopic rod 61 always maintains abutment contact with the object to be salvaged. Since when the object rises, if the telescopic rod 61 maintains a specific length, the object to be salvaged will generate a component force on the telescopic rod 61, which will act on the telescopic rod 61 and make the telescopic rod 61 extend and retract, and at the same time, another component force will be generated to suppress the movement in the horizontal direction, thereby completing the adaptation of the length of the telescopic rod 61 to the lifting process. Finally, after the object to be salvaged is higher than the deck and fence of the ship, rotate the rotating rod 41 so that the boom 43 is located above the ship, which is convenient for placing the object to be salvaged on the deck.

[0039] In an embodiment of the ship salvaging method of the present invention:

[0040] The ship salvage method in this embodiment uses the above-mentioned ship adjustable salvage device. Specifically, during the operation, the boom 43 is first extended out of the ship, and the winch 51 is started to unwind the lifting rope 52. When the object to be salvaged is placed under the hook, it stops, and the telescopic rod 61 is used to assist the hook in hooking. After the hooking is completed, the telescopic rod 61 is maintained in contact with the object to be salvaged to straighten it. Then the winch 51 is started to reel in the lifting rope 52, and the object to be salvaged will gradually rise. During the rising process, the telescopic rod 61 always maintains abutment contact with the object to be salvaged. Since when the object rises, if the telescopic rod 61 maintains a specific length, the object to be salvaged will generate a component force on the telescopic rod 61, which will act on the telescopic rod 61 and make the telescopic rod 61 extend and retract. At the same time, another component force will be generated to suppress the movement in the horizontal direction, thereby completing the adaptation of the length of the telescopic rod 61 to the lifting process. Finally, after the object to be salvaged is higher than the ship deck and the fence, the rotating rod 41 is rotated so that the boom 43 is located above the ship, so that the object to be salvaged can be conveniently placed on the deck. This ship salvaging method is also a method for using the ship adjustable salvaging device.

[0041] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An adjustable salvage device for a ship, comprising a steering mechanism, the steering mechanism comprising a rotating seat and a base arranged up and down and relatively rotatable, a boom for hanging out of the ship during lifting is fixedly arranged on the rotating seat, a winding device is arranged on the rotating seat or the boom, a hoisting rope for hoisting the salvaged object is wound on the winding device, and the characteristics are: The adjustable ship-borne salvaging device also includes a guide movable seat located at the bottom of the base and used to be fixedly connected to the deck of the ship. The base can be locked and guided on the guide movable seat so that the length of the base extending out of the ship when lifting can be changed as the position of the base on the guide movable seat changes. The adjustable ship-borne salvaging device also includes a righting mechanism, which includes a base fixed on the deck of the ship and arranged at an interval with the steering mechanism. A telescopic rod with adjustable length is hingedly connected to the base, and the end of the telescopic rod has an abutment end for contacting the object to be salvaged and maintaining the stability of the object to be salvaged during the lifting process.

2. The adjustable marine salvaging device according to claim 1, characterized in that: A slide groove is arranged on the guide movable seat, and a limit block matched with the slide groove is arranged on the base.

3. The adjustable marine salvaging device according to claim 2, characterized in that: The slide groove is a dovetail groove, and the limit block is a dovetail block adapted to the slide groove.

4. The adjustable marine salvaging device according to any one of claims 1 to 3, characterized in that: The telescopic rod comprises a plurality of telescopic sections which are nested and each of the telescopic sections can slide relatively under the action of an external force.

5. The adjustable marine salvaging device according to any one of claims 1 to 3, characterized in that: The abutment end is an abutment ring arranged at the end of the telescopic rod.

6. The adjustable marine salvaging device according to claim 2 or 3, characterized in that: The slide groove is provided with a plurality of first limit holes arranged at intervals along the length direction of the guide movable seat, and the limit block is provided with a second limit hole, so as to complete the relative locking of the limit block and the slide groove after the limit pin passes through the first limit hole and the second limit hole in sequence.

7. The adjustable marine salvaging device according to claim 2 or 3, characterized in that: The base comprises a support rod and a diagonal support fixed between the support rod and the limiting block.

8. The adjustable marine salvaging device according to any one of claims 1 to 3, characterized in that: The rotating seat includes a vertically arranged rotating rod and a winding installation rod arranged perpendicular to the rotating rod, the winding installation rod is provided with the winding device, and the end of the boom away from the rotating seat is also provided with a roller for winding the lifting rope.

9. The adjustable marine salvaging device according to any one of claims 1 to 3, characterized in that: The base and the telescopic rod are connected by a ball joint.

10. A ship salvaging method, characterized in that: When using the adjustable marine salvaging device as described in any one of claims 1 to 9, the position of the steering mechanism is first adjusted and fixed according to the size of the object to be salvaged, and then the winding device is started. During the process of the winding device winding the lifting rope and the object to be salvaged rising, the end of the telescopic rod of the righting mechanism is maintained in contact with the salvaged object.

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