Method for using a lifting device for a ship

Abstract

The present invention discloses a ship lifting device and a method of using the same, and relates to the technical field of ship lifting equipment. The ship lifting device comprises a base, a support column fixed on the base, a bearing seat installed on the upper end of the support column, a rotating table rotatably arranged on the upper end of the bearing seat, a wire winding box arranged on the upper end of the rotating table, and a winch installed in the rotating table. The connecting column is initially buffered by a second oil pressure buffer and an arc buffer plate evenly arranged on the movable sleeve, thereby maintaining the stability of the lifting wire and reducing the swing of the lifting wire. The male head of the contact switch contacts the female head of the contact switch, and a command is issued through a wireless communication connection to accelerate the rotation of a winding motor parallel to the second oil pressure buffer in a compressed state, so that the corresponding two pulling wires are tightened to pull the movable sleeve back in the opposite direction of the swing of the object, thereby greatly reducing the swing of the lifting wire.

Description

Technical Field

[0001] The present invention relates to the technical field of ship lifting equipment, and in particular to a method for using a ship lifting device. Background Art

[0002] Ship lift, also known as crane, ship crane, ship crane, is a large deck machinery on board, mainly used for important tasks such as transportation and transfer of cargo between ships, marine replenishment, deployment and recovery of underwater operating equipment, etc. Hydraulic crane is a commonly used loading and unloading equipment on ships. Ships are equipped with cranes to solve the dependence on port unloading equipment. This crane is convenient and efficient during lifting, with a wide range of applications, which brings great convenience to the loading and unloading of cargo. However, during ship operations, the cargo is often heavy and the inertia of the cargo during lifting will cause the cargo to sway, especially in some vast waters, accompanied by wind on the water surface, causing a significant decrease in the stability of cargo lifting, which may cause wear of the wire rope and reduce its service life, or cause cargo to fall, or even cause injuries to personnel and equipment, posing a huge safety hazard.

[0003] A Chinese patent with publication number CN116002524A discloses a lifting device for ships. By adding a buffer mechanism, the device can effectively reduce the wear between the wire rope and the guide wheel when it is shaking, thereby extending the service life of the wire rope. However, the device cannot fundamentally solve the problem of swaying during cargo lifting.

[0004] The Chinese patent with publication number CN212101718U discloses a crane-mounted lifting anti-sway control system. The device is connected to the hook through a pull rope to form a stable triangular shape, which preliminarily improves the stability of the wire rope. The cylinder is controlled by a controller to drive the clamping plate to move downward and fit into the limit groove, fixing the rotating rod to make the pull rope a fixed length. Under the tension of the pull rope, the wire rope is prevented from swinging.

[0005] However, when the above structure is actually used, the flexibility of the pull rope will cause it to deform, making it impossible to form a stable triangular structure. It can only play an auxiliary role in suppressing the swing of goods and wire ropes. In addition, when the above structure is in use, because the pull ropes are arranged on both sides of the wire rope, the pulling direction of the pull rope is single, and it cannot solve the problem of multi-directional swing of the wire rope. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method for using a lifting device for a ship, which solves the problems raised in the background technology.

[0007] Base comprises support, cast, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring, and castor is arranged on the pin of base bottom four, to carry mobile handler location. A connecting column; a movable sleeve, the movable sleeve is movably installed on the outside of the connecting column, and a first oil pressure buffer is provided between the lower end of the movable sleeve and the connecting column, and the two ends of the first oil pressure buffer are hinged with movable sleeves and discs respectively; a second oil pressure buffer, there are three second oil pressure buffers in total, and the second oil pressure buffers are fixed at equal intervals on the circumference of the movable sleeve, and the movable end of the second oil pressure buffer is fixed with an arc-shaped buffer plate, and the outer side of the arc-shaped buffer plate is fixed with a male contact switch, and the outer side of the second oil pressure buffer is fixed with a female contact switch matched with the male contact switch. The inner side of the movable sleeve; an equipment box, the equipment box is fixed on the circumference of the connecting shell in an equilateral triangle array, and the angle between the second oil pressure buffer and the two adjacent equipment boxes in the plane is 60°, and the inside of the equipment box is symmetrically provided with pulling wires, and the angle between the two pulling wires is an acute angle, and the lower end of the pulling wire extends downward and is fixedly connected to the outer side of the movable sleeve.

[0008] Furthermore, it also includes a winding component, which is arranged inside the equipment box, and the winding component includes a winding motor, which is installed inside the equipment box, and a driving gear is installed at the output end of the winding motor; there are two winding rollers, and the two winding rollers are symmetrically arranged inside the equipment box for winding and pulling the steel wire, and a driven gear is fixed between the two winding rollers, and the driven gear is meshed with the driving gear.

[0009] Furthermore, a motor controller is installed inside the equipment box, and the motor controller is connected to the corresponding contact switch female head through wireless communication.

[0010] Furthermore, connecting blocks are installed at equal intervals on the outer side of the movable sleeve in the circumferential direction, the upper end of the connecting block is fixedly connected to the lower end of the pulling wire, and the lower end of the connecting block is hinged to the movable end of the first oil pressure buffer.

[0011] Furthermore, the movable pulley assembly includes a pulley frame fixed to the upper end of the connecting column, a movable pulley is rotatably mounted inside the pulley frame, and a wire fixing frame fixedly connected to one end of the lifting wire is fixed to the upper end of the pulley frame.

[0012] Furthermore, the fixed pulley assembly includes a first fixed pulley and a second fixed pulley rotatably mounted inside the connecting shell, the second fixed pulley is located below the first fixed pulley, and the maximum outer diameter of the second fixed pulley is smaller than the maximum outer diameter of the first fixed pulley.

[0013] Furthermore, a support frame fixedly connected to the equipment box is installed on the outer side of the connecting shell, and a stabilizing rod is installed between two adjacent support frames.

[0014] Furthermore, reinforcing columns are installed between the base and the bearing seat, and the reinforcing columns are fixed at equal intervals on the circumference of the supporting column.

[0015] Furthermore, hydraulic cylinders are rotatably installed on both sides of the rotating platform, and the telescopic ends of the hydraulic cylinders are hinged to the outer sides of the main boom.

[0016] In addition, the present invention also provides a method for using a ship lifting device, comprising the following steps:

[0017] S1. Pre-preparation: Control the rotation angle of the rotating platform on the support column, adjust the direction of the main boom and telescopic arm, and determine the extension and retraction of the telescopic arm according to the distance of the objects to be lifted;

[0018] S2. Loading: Bundle the items to be lifted and hang them on the hooks;

[0019] S3. Lifting: Start the hydraulic cylinder, extend and retract the hydraulic cylinder to drive the main boom to rotate, adjust the lifting height of the object, start the winch to reel in the lifting wire, so that the object rises synchronously with the lifting wire, start the reeling motor to rotate the driving gear, and mesh the driving gear with the driven gear to rotate the reeling roller, and reel the pulling wire through the reeling roller to ensure that the pulling wire is always in a taut state;

[0020] S4. Control the swing amplitude of the lifting object: When the object swings, the hook drives the connecting column to swing, so that the connecting column contacts the arc buffer plate, and the second hydraulic buffer is used to buffer the swing of the object. When the swing amplitude of the object is too large, the connecting column squeezes the arc buffer plate, so that the arc buffer plate fits the inner wall of the movable sleeve, and the male head of the contact switch contacts the female head of the contact switch. A command is sent through the wireless communication connection to accelerate the rotation of the winding motor parallel to the second hydraulic buffer in the compressed state, so that the pulling wire is tightened to pull the movable sleeve back in the opposite direction of the object swing, until the male head of the contact switch is separated from the female head of the contact switch, and the speed of the winding motor returns to normal;

[0021] S5. Transport: Control the rotation angle of the rotating platform on the support column, adjust the direction of the main boom and telescopic arm, and transport the items to the specified location and direction;

[0022] S6. Unloading: Unwind the lifting wire through the winch, and start the reeling motor at the same time, so that the reeling roller can unwind the pulling wire synchronously until the object falls to the ground and is removed from the hook.

[0023] The present invention has the following beneficial effects:

[0024] (1) The method for using the ship lifting device is to form a triangular structure through two adjacent pulling wires to assist in improving the stability of the movable sleeve, and to perform preliminary buffering on the connecting column through the second hydraulic buffer and the arc buffer plate evenly arranged on the movable sleeve, thereby maintaining the stability of the lifting wire and reducing the swing of the lifting wire. When the swing amplitude of the lifting wire is large, the connecting column squeezes the arc buffer plate so that the arc buffer plate fits the inner wall of the movable sleeve, and then the male head of the contact switch contacts the female head of the contact switch, and sends a command through the wireless communication connection to accelerate the rotation of the winding motor parallel to the second hydraulic buffer in the compressed state, so that the corresponding two pulling wires are tightened to pull the movable sleeve back in the opposite direction of the swing of the object, thereby greatly reducing the swing of the lifting wire;

[0025] (2) The method for using the ship lifting device is to reduce the multi-directional pulling of the movable sleeve by arranging a plurality of pulling steel wires on the outer side of the movable sleeve, thereby facilitating the pulling of the movable sleeve after swinging in different directions, so as to improve the stability of the movable sleeve;

[0026] (3) The method for using the ship lifting device can be used for buffering between the movable sleeve and the hook by setting the connecting column, the disc and the first oil pressure buffer, so as to adjust the posture of the movable sleeve and the hook so as to facilitate the pullback of the movable sleeve after swinging, thereby improving the stability of the equipment;

[0027] (4) The method for using the ship lifting device is to form a labor-saving pulley group by using the first fixed pulley, the second fixed pulley and the movable pulley, thereby improving the load-bearing capacity of the lifting wire.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a lifting device for a ship;

[0030] Figure 2 For ship lifting device Figure 1 Another perspective of the picture;

[0031] Figure 3This is a schematic diagram of the installation structure of the lifting wire in the ship lifting device;

[0032] Figure 4 Lifting device for ships Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 5 It is a schematic diagram of the installation structure of the hook in the ship lifting device;

[0034] Figure 6 It is a schematic diagram of the installation structure of the movable sleeve in the ship lifting device;

[0035] Figure 7 The figure is a schematic diagram of the installation structure of the first oil pressure buffer in the ship lifting device;

[0036] Figure 8 For ship lifting device Figure 7 A top view of

[0037] Fig. 9 It is a schematic diagram of the internal structure of the movable sleeve in the lifting device for ships;

[0038] Fig.10 This is a schematic diagram of the internal structure of the equipment box in the ship's lifting device.

[0039] In the figure, 1, base; 2, support column; 3, bearing seat; 4, reinforcement column; 5, rotating table; 6, movable arm; 7, main boom; 8, hydraulic cylinder; 9, telescopic arm; 10, wire winding box; 11, winch; 12, lifting wire; 13, connecting shell; 14, support frame; 15, equipment box; 16, stabilizer bar; 17, pulling wire; 18, movable sleeve; 19, connecting block; 20, hook; 21, pulley frame; 22, connecting column; 23, disc; 24, movable pulley; 25, wire fixing frame; 26, first fixed pulley; 27, second fixed pulley; 28, first hydraulic buffer; 29, second hydraulic buffer; 30, arc buffer plate; 31, contact switch male head; 32, contact switch female head; 33, winding motor; 34, motor controller; 35, driving gear; 36, winding roller; 37, driven gear. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] See also Figure 1-Figure 10 The embodiment of the present invention provides a technical solution: a lifting device for a ship, comprising a base 1, a support column 2 fixed on the base 1, a bearing seat 3 installed on the upper end of the support column 2, a rotating table 5 rotatably arranged on the upper end of the bearing seat 3, a wire winding box 10 arranged on the upper end of the rotating table 5, and a winch 11 installed in the rotating table 5, a movable arm 6 is rotatably installed on the outer side of the rotating table 5, a main boom 7 is fixed at one end of the movable arm 6, a telescopic arm 9 is arranged in the main boom 7, and also includes a connecting shell 13, the connecting shell 13 is fixed to the telescopic end of the telescopic arm 9, and a fixed pulley assembly is arranged inside the connecting shell 13, a movable pulley assembly is arranged below the connecting shell 13, a hook 20 is installed at the lower end of the movable pulley assembly, and a lifting wire 12 is arranged on the movable pulley assembly, and the other end of the lifting wire 12 passes through the fixed pulley assembly and is connected to the winch 11.

[0043] To facilitate the lifting of cargo, the ship lifting device provided in this embodiment also includes a disc 23, which is fixed to the upper end of the hook 20, and a connecting column 22 is installed on the upper surface of the disc 23. Preferably, the connecting column 22 and the disc 23 are integrally formed, and the hook 20 and the disc 23 are tightly connected by bolts.

[0044] In order to reduce the swing during the cargo lifting process, the ship lifting device provided in this embodiment further includes a movable sleeve 18. Preferably, the outer diameter of the movable sleeve 18 is larger than the outer diameter of the disc 23, and the movable sleeve 18 is a steel component to improve its strength and extend its service life. In addition, the movable sleeve 18 is movably installed on the outside of the connecting column 22, and a first oil pressure buffer 28 is provided between the lower end of the movable sleeve 18 and the disc 23. The movable sleeve 18 and the disc 23 are hinged at both ends of the first oil pressure buffer 28. Preferably, there are three first oil pressure buffers 28, and the three first oil pressure buffers 28 are arranged on the disc 23 at equal intervals.

[0045] In order to improve the anti-sway effect during cargo lifting, the ship lifting device provided in this embodiment also includes a second oil hydraulic buffer 29, there are three second oil hydraulic buffers 29, and the second oil hydraulic buffers 29 are fixed at equal intervals on the circumference of the movable sleeve 18, and an arc-shaped buffer plate 30 is fixed at the movable end of the second oil hydraulic buffer 29. Preferably, the arc angle corresponding to the arc buffer plate 30 is 110°-120°, so that the connecting column 22 is in contact with the arc buffer plate 30. It should be noted that when the two arc buffer plates 30 are close to the inner wall of the movable sleeve 18, the distance between the nearest ends of the two arc buffer plates 30 is less than the diameter of the connecting column 22 to prevent the connecting column 22 from leaking out of the gap between the arc buffer plates 30.

[0046] In addition, in order to facilitate the detection of the state of the arc buffer plate 30, a male contact switch 31 is fixed on the outside of the arc buffer plate 30, and a female contact switch 32 adapted to the male contact switch 31 is fixed on the outside of the second oil pressure buffer 29 near the inner side of the movable sleeve 18. When the male contact switch 31 contacts the female contact switch 32, an acceleration signal is triggered to facilitate subsequent operations.

[0047] In addition, the ship lifting device provided in this embodiment also includes an equipment box 15, which is fixed on the peripheral side of the connecting shell 13 in an equilateral triangle array, and the angle between the second oil pressure buffer 29 and the two adjacent equipment boxes 15 in the plane is 60°, that is, when the equipment box 15 and the second oil pressure buffer 29 are both projected onto the disk 23, the angle bisector between the two adjacent equipment boxes 15 coincides with the projection of the second oil pressure buffer 29. In addition, the interior of the equipment box 15 is symmetrically provided with pulling wires 17, and the angle between the two pulling wires 17 is an acute angle, and the lower end of the pulling wire 17 extends downward and is fixedly connected to the outer side of the movable sleeve 18. Preferably, a tension sensor is installed at the lower end of the pulling wire 17 to detect the tension of the pulling wire 17, so as to determine whether the pulling wire 17 is in a taut state.

[0048] like Figure 6 , Figure 8 and Fig.10 As shown, the ship lifting device provided in this embodiment also includes a winding assembly, which is arranged inside the equipment box 15. The winding assembly includes a winding motor 33, which is installed inside the equipment box 15, and a driving gear 35 and a winding roller 36 are installed at the output end of the winding motor 33. There are two winding rollers 36, and the two winding rollers 36 are symmetrically arranged inside the equipment box 15. The two winding rollers 36 are respectively fixed to the upper ends of the two pulling wires 17 for winding the pulling wires 17. Preferably, a through hole is opened at the bottom of the equipment box 15 for the movement of the pulling wires 17, and a driven gear 37 is fixed between the two winding rollers 36, and the driven gear 37 is meshed with the driving gear 35.

[0049] In this embodiment, the winding motor 33 works to drive the driving gear 35 to rotate, and the driven gear 37 is engaged with the driving gear 35, so that the driven gear 37 drives the two winding rollers 36 to rotate synchronously, and then the two winding rollers 36 synchronously wind up the two pulling wires 17 to facilitate the lifting of the movable sleeve 18.

[0050] like Fig.10 As shown, in order to facilitate the control of the winding speed of the pulling wire 17 to reduce the swing amplitude of the goods, a motor controller 34 is installed inside the equipment box 15, and the motor controller 34 and the corresponding contact switch female head 32 are connected through wireless communication. Through the wireless communication connection, the acceleration signal generated when the contact switch male head 31 contacts the contact switch female head 32 is sent to the inside of the equipment box 15.

[0051] In this embodiment, it should be noted that since the angle between the second oil pressure buffer 29 and the two adjacent equipment boxes 15 in the plane is 60°, the angle between the motor controller 34 inside the two adjacent equipment boxes 15 in the plane and the second oil pressure buffer 29 is also 60°. Furthermore, the extension line of the plane where the contact switch female head 32 located outside the second oil pressure buffer 29 is located is parallel to the motor controller 34 inside the other equipment box 15. Therefore, the motor controller 34 and the relative contact switch female head 32 are connected through wireless communication, that is, the contact switch female head 32 is wirelessly communicated with the motor controller 34 inside the other equipment box 15 to achieve staggered connection, so as to achieve the purpose of controlling the pulling wire 17 with opposite swinging directions.

[0052] In this embodiment, when the swing amplitude of the goods is large, the connecting column 22 squeezes the arc buffer plate 30 so that the arc buffer plate 30 fits against the inner wall of the movable sleeve 18. At this time, one of the second oil pressure buffers 29 is in a compressed state, and then the contact switch male head 31 contacts the contact switch female head 32, and an acceleration signal is sent through the wireless communication connection to accelerate the rotation of the winding motor 33 parallel to the second oil pressure buffer 29 in the compressed state, so that the corresponding two pulling wires 17 are tightened to pull the movable sleeve 18 back in the opposite direction of the swing of the object, thereby greatly reducing the swing of the goods.

[0053] like Figure 6-Figure 8 As shown, in order to facilitate the fixation of the lower end of the pulling wire 17, connecting blocks 19 are installed at equal intervals on the outer side of the movable sleeve 18 in the circumferential direction. The upper end of the connecting block 19 is fixedly connected to the lower end of the pulling wire 17, and the lower end of the connecting block 19 is hinged to the movable end of the first oil pressure buffer 28.

[0054] like Figure 5As shown, the movable pulley assembly includes a pulley frame 21 fixed to the upper end of a connecting column 22, a movable pulley 24 is rotatably mounted inside the pulley frame 21, and a wire fixing frame 25 fixedly connected to one end of the lifting wire 12 is fixed to the upper end of the pulley frame 21.

[0055] like Figure 3-Figure 5 As shown, the fixed pulley assembly includes a first fixed pulley 26 and a second fixed pulley 27 rotatably mounted inside the connecting shell 13. The second fixed pulley 27 is located below the first fixed pulley 26, and the maximum outer diameter of the second fixed pulley 27 is smaller than the maximum outer diameter of the first fixed pulley 26, so that the lifting wire 12 can pass through the fixed pulley assembly smoothly.

[0056] In this embodiment, the lifting wire 12 starts from the winch 11, passes through the first fixed pulley 26, the movable pulley 24, and the second fixed pulley 27 in sequence, and is finally fixed on the wire fixing frame 25 to form a labor-saving pulley group, thereby improving the load-bearing capacity of the lifting wire 12.

[0057] like Figure 1 and Figure 2 As shown, to facilitate the fixation of the equipment box 15 , a support frame 14 fixedly connected to the equipment box 15 is installed on the outside of the connecting shell 13 , and a stabilizing rod 16 is installed between two adjacent support frames 14 , forming a triangular structure between the stabilizing rods 16 to improve the stability of the support frame 14 .

[0058] like Figure 1 and Figure 2 As shown, in order to improve the stability of the support column 2, a reinforcing column 4 is installed between the base 1 and the bearing seat 3, and the reinforcing columns 4 are fixed at equal intervals around the support column 2, thereby improving the stability of the support column 2 and improving the bearing capacity of the bearing seat 3.

[0059] like Figure 1 and Figure 2 As shown, in order to realize the lifting of the main boom 7, hydraulic cylinders 8 are rotatably installed on both sides of the rotating platform 5. The telescopic ends of the hydraulic cylinders 8 are hinged to the outside of the main boom 7. The main boom 7 is driven to move by the telescopic movement of the hydraulic cylinders 8, thereby realizing the lifting of the main boom 7.

[0060] In addition, this embodiment also provides a method for using a ship lifting device, comprising the following steps:

[0061] S1. Pre-preparation: Control the rotation angle of the rotating table 5 on the support column 2, adjust the direction of the main boom 7 and the telescopic arm 9, and determine the telescopic arm 9 according to the distance of the lifting object;

[0062] S2. Loading: Bundle the items to be hoisted and hang the bundled items on the hook 20;

[0063] S3. Lifting: Start the hydraulic cylinder 8, and drive the main boom 7 to rotate by extending and retracting the hydraulic cylinder 8, adjust the lifting height of the object, start the hoist 11, reel the lifting wire 12, so that the object rises synchronously with the lifting wire 12, start the reeling motor 33, rotate the driving gear 35, and mesh the driving gear 35 with the driven gear 37 to rotate the reeling roller 36, and reel the pulling wire 17 through the reeling roller 36 to ensure that the pulling wire 17 is always in a taut state;

[0064] S4. Control the swing amplitude of the lifting object: when the object swings, the hook 20 drives the connecting column 22 to swing, so that the connecting column 22 contacts the arc buffer plate 30, and the second hydraulic buffer 29 is used to buffer the swing of the object. When the swing amplitude of the object is too large, the connecting column 22 squeezes the arc buffer plate 30, so that the arc buffer plate 30 fits the inner wall of the movable sleeve 18, and the contact switch male head 31 contacts the contact switch female head 32. A command is sent through the wireless communication connection to accelerate the rotation of the winding motor 33 parallel to the second hydraulic buffer 29 in the compressed state, so that the pulling wire 17 is tightened to pull the movable sleeve 18 back in the opposite direction of the object swing, until the contact switch male head 31 is separated from the contact switch female head 32, and the speed of the winding motor 33 returns to normal;

[0065] S5. Transport: Control the rotation angle of the rotating table 5 on the support column 2, adjust the direction of the main boom 7 and the telescopic arm 9, so that the items are transported to the specified position and direction;

[0066] S6. Unloading: The lifting wire 12 is unwound through the winch 11, and the reeling motor 33 is started at the same time, so that the reeling roller 36 synchronously unwinds the pulling wire 17 until the goods fall to the ground and are removed from the hook 20.

[0067] When in use (working), the objects to be lifted are bundled and hung on the hook 20, the hydraulic cylinder 8 is started, and the main boom 7 is driven to rotate through the extension and retraction of the hydraulic cylinder 8, the lifting height of the object is adjusted, the winch 11 is started, the lifting wire 12 is reeled, so that the object rises synchronously with the lifting wire 12, the reeling motor 33 is started, the driving gear 35 is rotated, and the driving gear 35 is meshed with the driven gear 37 to make the reeling roller 36 rotate, and the pulling wire 17 is reeled by the reeling roller 36 to ensure that the pulling wire 17 is always in a taut state.

[0068] When the object swings, the hook 20 drives the connecting column 22 to swing, so that the connecting column 22 contacts the arc buffer plate 30, and the second oil pressure buffer 29 is used to buffer the swing of the object. When the swing amplitude of the object is too large, the connecting column 22 squeezes the arc buffer plate 30, so that the arc buffer plate 30 fits against the inner wall of the movable sleeve 18, and the contact switch male head 31 contacts the contact switch female head 32. A command is issued through the wireless communication connection to accelerate the rotation of the winding motor 33 parallel to the second oil pressure buffer 29 in the compressed state, so that the pulling wire 17 is tightened to pull the movable sleeve 18 back in the opposite direction of the swing of the object until the contact switch male head 31 is separated from the contact switch female head 32, and the speed of the winding motor 33 returns to normal.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for using a ship lifting device, comprising a ship lifting device, the ship lifting device comprising a base (1), a support column (2) fixed on the base (1), a bearing seat (3) installed on the upper end of the support column (2), a rotating table (5) rotatably arranged on the upper end of the bearing seat (3), a wire winding box (10) arranged on the upper end of the rotating table (5), and a winch (11) installed in the rotating table (5), a movable arm (6) is rotatably installed on the outer side of the rotating table (5), a main boom (7) is fixed at one end of the movable arm (6), and a telescopic arm (9) is arranged in the main boom (7), characterized in that: Also includes: A connecting shell (13), the connecting shell (13) being fixed to the telescopic end of the telescopic arm (9), and a fixed pulley assembly being provided inside the connecting shell (13), a movable pulley assembly being provided below the connecting shell (13), a hook (20) being installed at the lower end of the movable pulley assembly, and a lifting wire (12) being provided on the movable pulley assembly, and the other end of the lifting wire (12) passing through the fixed pulley assembly and being connected to the winch (11); A circular disc (23), wherein the circular disc (23) is fixed to the upper end of the hook (20), and a connecting column (22) is installed on the upper surface of the circular disc (23); A movable sleeve (18), the movable sleeve (18) is movably mounted on the outside of the connecting column (22), and a first oil pressure buffer (28) is provided between the lower end of the movable sleeve (18) and the connecting column (22), and the movable sleeve (18) and the disc (23) are hinged at both ends of the first oil pressure buffer (28); A second oil pressure buffer (29), wherein there are three second oil pressure buffers (29) in total, and the second oil pressure buffers (29) are fixed at equal intervals in the circumferential direction of the movable sleeve (18), an arc-shaped buffer plate (30) is fixed to the movable end of the second oil pressure buffer (29), a contact switch male head (31) is fixed to the outer side of the arc-shaped buffer plate (30), and a contact switch female head (32) adapted to the contact switch male head (31) is fixed to the outer side of the second oil pressure buffer (29) near the inner side of the movable sleeve (18); Equipment boxes (15), the equipment boxes (15) are fixed to the peripheral side of the connecting shell (13) in an equilateral triangle array, and the angle between the second oil pressure buffer (29) and two adjacent equipment boxes (15) in the plane is 60 degrees, and the equipment box (15) is symmetrically provided with pulling wires (17) inside, the angle between the two pulling wires (17) is an acute angle, and the lower end of the pulling wire (17) extends downward and is fixedly connected to the outer side of the movable sleeve (18); The winding assembly is arranged inside the equipment box (15), and the winding assembly comprises: A winding motor (33), wherein the winding motor (33) is installed inside the equipment box (15), and a driving gear (35) is installed at the output end of the winding motor (33); A winding roller (36), wherein there are two winding rollers (36), and the two winding rollers (36) are symmetrically arranged inside the equipment box (15) for winding up the pulling wire (17), and a driven gear (37) is fixed between the two winding rollers (36), and the driven gear (37) is meshed with the driving gear (35); A motor controller (34) is installed inside the equipment box (15), and the motor controller (34) is connected to the corresponding contact switch female head (32) via wireless communication; Hydraulic cylinders (8) are rotatably mounted on both sides of the rotating platform (5), and the telescopic ends of the hydraulic cylinders (8) are hinged to the outside of the main boom (7); The method for using the ship lifting device comprises the following steps: S1. Pre-preparation: controlling the rotation angle of the rotating table (5) on the support column (2), adjusting the direction of the main boom (7) and the telescopic arm (9), and determining the telescopic distance of the telescopic arm (9) according to the distance of the items to be lifted; S2. Loading: Bundle the items to be lifted and hang the bundled items on the hook (20); S3. Lifting: Start the hydraulic cylinder (8), extend and retract the hydraulic cylinder (8), drive the main boom (7) to rotate, adjust the lifting height of the object, start the winch (11), reel in the lifting wire (12), so that the object rises synchronously with the lifting wire (12), start the reeling motor (33), rotate the driving gear (35), mesh the driving gear (35) with the driven gear (37), rotate the reeling roller (36), and reel the pulling wire (17) through the reeling roller (36), so as to ensure that the pulling wire (17) is always in a taut state; S4. Controlling the swing amplitude of the lifting object: When the object swings, the hook (20) drives the connecting column (22) to swing, so that the connecting column (22) contacts the arc buffer plate (30), and the second hydraulic buffer (29) is used to buffer the swing of the object. When the swing amplitude of the object is too large, the connecting column (22) squeezes the arc buffer plate (30), so that the arc buffer plate (30) fits the inner wall of the movable sleeve (18), and the male contact switch (31) contacts the female contact switch (32). A command is sent through the wireless communication connection to accelerate the rotation of the winding motor (33) parallel to the second hydraulic buffer (29) in the compressed state, so that the pulling wire (17) is tightened to pull the movable sleeve (18) back in the opposite direction of the swing of the object, until the male contact switch (31) and the female contact switch (32) are separated, and the speed of the winding motor (33) returns to normal; S5. Handling: Control the rotation angle of the rotating table (5) on the support column (2), adjust the direction of the main boom (7) and the telescopic arm (9), so that the items are transported to the specified position and direction; S6. Unloading: The lifting wire (12) is unwound by the winch (11), and the reeling motor (33) is started at the same time, so that the reeling roller (36) synchronously unwinds the pulling wire (17) until the object falls to the ground, and the object is removed from the hook (20).

2. A method for using a ship lifting device according to claim 1, characterized in that: Connecting blocks (19) are installed at equal intervals on the outer side of the movable sleeve (18) in the circumferential direction. The upper end of the connecting block (19) is fixedly connected to the lower end of the pulling wire (17), and the lower end of the connecting block (19) is hinged to the movable end of the first oil pressure buffer (28).

3. A method for using a ship lifting device according to claim 2, characterized in that: The movable pulley assembly comprises a pulley frame (21) fixed to the upper end of a connecting column (22), a movable pulley (24) being rotatably mounted inside the pulley frame (21), and a steel wire fixing frame (25) fixedly connected to one end of a lifting steel wire (12) being fixed to the upper end of the pulley frame (21).

4. A method for using a ship lifting device according to claim 3, characterized in that: The fixed pulley assembly comprises a first fixed pulley (26) and a second fixed pulley (27) rotatably mounted inside the connecting housing (13); the second fixed pulley (27) is located below the first fixed pulley (26); and the maximum outer diameter of the second fixed pulley (27) is smaller than the maximum outer diameter of the first fixed pulley (26).

5. A method for using a ship lifting device according to any one of claims 1 to 4, characterized in that: A support frame (14) fixedly connected to the equipment box (15) is installed on the outside of the connection shell (13), and a stabilizing rod (16) is installed between two adjacent support frames (14).

6. A method for using a ship lifting device according to claim 5, characterized in that: Reinforcement columns (4) are installed between the base (1) and the bearing seat (3), and the reinforcement columns (4) are fixed at equal intervals in the circumferential direction of the support column (2).

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