Lifting device for ship maintenance

Abstract

The invention provides a lifting device for ship maintenance, and relates to the technical field of lifting devices.The lifting device comprises two bases, a water area is connected between the two bases, a top frame is fixed to the tops of the bases, and two movable frames are symmetrically installed at the upper end of the top frame in a sliding mode; and two sets of electric winches are symmetrically installed on the surface of the top of the movable frame, lifting ropes penetrate out of one ends of the bottoms of the electric winches, and two sets of abutting blocks are arranged on the surfaces of the inner sides of the two bases. After the first arc block and the second arc block are unfolded, the rope body is tightly attached to the bottom and the two side surfaces of the ship, the stability of the ship in the lifting process is improved by increasing the contact area, the ship is pushed upwards from the bottom through the connecting rod, the pressure of top lifting equipment is relieved, and meanwhile the stability of the bottom of the ship is kept.

Description

Technical Field

[0001] The invention relates to the technical field of lifting devices, in particular to a lifting device for ship maintenance. Background Art

[0002] Ship maintenance refers to the regular maintenance and repair of ships during their service life to keep them in good technical condition. When repairing a ship, it is generally necessary to lift the ship so that its propellers and other parts below the water surface are exposed. When using existing auxiliary lifting devices for ship maintenance, the lifting of the ship is generally achieved through winding equipment and wire ropes.

[0003] In the process of lifting the ship with the lifting rope, the connection range between the lifting rope and the ship is limited, which can easily cause the ship to shake and have poor stability. In addition, the ship is usually lifted by connecting it to the hull at multiple lifting points. The main power comes from the top, which can easily cause the top winding equipment to bear too much weight and be damaged. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lifting device for ship maintenance to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The lifting rope of the lifting component is connected with the supporting rope of the binding component to form a U-shaped wrapped rope body, which is wrapped around the bottom of the ship. After being unfolded through the first arc block and the second arc block, the rope body is pressed against the bottom and two side surfaces of the ship, and the stability of the ship during the lifting process is improved by increasing the contact area. The connecting rod pushes the ship upward from the bottom to reduce the pressure on the top lifting equipment while maintaining the stability of the bottom of the ship.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a lifting device for ship maintenance, including a base, the base is provided with two groups, the middle of the two groups of bases is connected with a water area, a top frame is fixed on the top of the base, and two mobile frames are symmetrically slidably installed on the upper end of the top frame, two groups of electric winches are symmetrically installed on the top surface of the mobile frame, a lifting rope is passed through one end of the bottom of the electric winch, two groups of blocks are provided on the inner side surfaces of the two bases, and a binding component is provided inside the block, the binding component includes a supporting rope, the two ends of the supporting rope are connected with two corresponding blocks in the horizontal direction, a slot is provided on the surface of the block, a first arc block is slidably inserted at the upper end of the slot, and a second arc block is slidably inserted at the lower end of the slot, the two ends of the supporting rope slide through the first arc block and the second arc block, an insertion frame is fixed on the back of the block, a vertical frame is slidably inserted inside the insertion frame, and the top of the vertical frame is fixedly connected to the outer side of the mobile frame.

[0006] Furthermore, a bidirectional screw is rotatably installed on the top of the top frame through a bearing seat, and the two ends of the two groups of movable frames are respectively threadedly sleeved on the two end surfaces of the bidirectional screw. A motor is fixed at the position of the top frame corresponding to one end of the bidirectional screw, and the output end of the motor is fixedly connected to the bidirectional screw.

[0007] Furthermore, two moving grooves are symmetrically opened on the surface of the moving frame, and a moving plate is slidably installed inside the moving groove, and the electric winch is fixed on the top of the moving plate.

[0008] Furthermore, the lifting assembly also includes a slider, the vertical frame is slidably connected to the slider, and a traction rope is fixed to the top of the slider, and the other end of the traction rope passes through the top of the vertical frame and is connected to the other end of the electric winch.

[0009] Furthermore, a stud is installed at the bottom of the lifting rope through a rotating shaft, and a screw barrel is fixed on the top of both ends of the supporting rope, and the stud can be threadedly inserted into the screw barrel, and the outer diameter of the screw barrel is smaller than the supporting rope and the lifting rope.

[0010] Furthermore, the binding assembly also includes an insertion rod, which is slidably inserted into the interior of the slider, and one end of the insertion rod is inserted into the interior of the stop block and is rotatably connected to the first arc block through a rotating shaft. A spring is sleeved on the outer surface of the other end of the insertion rod, and the other end of the spring is fixedly connected to the slider.

[0011] Furthermore, a sliding frame is slidably installed at a position in the same straight line as the bottom of the base and the stop block, and one end of the sliding frame is fixedly connected to the stop block, and a vertical plate is slidably connected inside the sliding frame, a connecting rod is rotatably connected to the surface of the vertical plate via a rotating shaft, and the other end of the connecting rod is rotatably connected to the bottom of the second arc block via the rotating shaft.

[0012] Furthermore, first electric push rods are fixed on both sides of the sliding frame, and the extended ends of the first electric push rods are fixedly connected to the vertical plates.

[0013] Furthermore, a second electric push rod is rotatably mounted on the upper end surface of the vertical plate located at the connecting rod mounting position via a rotating shaft, and an extended end of the second electric push rod is slidably sleeved on the connecting rod surface via a sleeve frame.

[0014] Furthermore, the base is provided with a movable notch at a position corresponding to the position where the insertion frame passes through, and the insertion frame slides out of the movable notch.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention adjusts the positions of the lifting component and the binding component to match the length of the ship, and then the electric winch unwinds the lifting rope, and the screw barrel of the supporting rope is kept on the top of the stop block. The stud is rotated to insert it into the screw barrel, so that the connection between the lifting rope and the supporting rope can be completed, thereby forming a U-shaped wrapped rope body, which can increase the contact range with the bottom of the ship, and the first arc block can slide along the supporting rope onto the surface of the lifting rope to make the lifting rope contact with the surfaces of both sides of the ship as much as possible according to the height of the ship.

[0017] 2. The present invention drives the movement of the vertical plate through the first electric push rod, maintains the connection between the connecting rod and the second block, and at this time the second block is still in contact with the surface of the ship, and then in the process of the lifting assembly driving the ship to lift, the second electric push rod is used to push the connecting rod to rotate, and the connecting rods at four positions form an inclined support frame, which cooperates with the second arc block to support the bottom surface of the ship, and at the same time assists the lifting assembly to lift the ship, reducing the pressure of the lifting assembly.

[0018] 3. In the present invention, the second electric push rod and the connecting rod are connected through a sleeve frame. Simply put, the sleeve frame is slidably sleeved on the surface of the connecting rod and is rotatably connected to the extended end of the second electric push rod, and then the extended end of the second electric push rod pushes the connecting rod to rotate along the vertical plate. The connection between the two is maintained by the sleeve frame, because at this time the stop block has been retracted to the vicinity of the base and separated from the first arc block and the second arc block, thereby facilitating the adjustment of the position of the first arc block and the second arc block, and the rotation of the connecting rod will not be interfered with by the stop block.

[0019] 4. After the lifting rope and the supporting rope are connected, the electric winch of the present invention reels the lifting rope and the traction rope at the same time, the lifting rope drives the ship to rise, and the traction rope pulls the sliding block to slide upward along the vertical frame. At the same time, the first arc block and the insertion rod also slide upward, and the first arc block enters the surface of the lifting rope. Through the elastic force of the spring, the insertion rod drives the first arc block to always contact the outer wall of the side of the ship. Because the first arc block is sleeved on the surface of the lifting rope, part of the lifting rope will also stick to the side of the ship, so as to increase the contact area between the U-shaped rope body and the ship, and increase the stability during the lifting and lowering process by wrapping.

[0020] 5. The present invention connects the vertical frame and the insertion frame, and the motor drives the bidirectional screw to rotate. The two movable frames slide along the top frame to adjust the distance between the front and rear lifting components. At the same time, the vertical frame drives the bottom frame and the binding component to slide synchronously along the movable notch of the base, and adjusts according to the length of the ship to ensure that the lifting rope and the supporting rope can be wrapped around the two ends of the ship as much as possible after binding.

[0021] 6. Compared with the prior art, the present invention connects the lifting rope of the lifting component with the supporting rope of the binding component to form a U-shaped wrapped rope body, which is wrapped around the bottom of the ship. After being unfolded by the first arc block and the second arc block, the rope body is pressed against the bottom and both side surfaces of the ship, thereby increasing the contact area to improve the stability of the ship during the lifting process. The connecting rod pushes the ship upward from the bottom to reduce the pressure on the top lifting equipment while maintaining the stability of the bottom of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall front view of a lifting device for ship maintenance according to the present invention;

[0023] Figure 2 This is a schematic diagram of the overall top of a lifting device for ship maintenance according to the present invention;

[0024] Figure 3 This is a schematic diagram of the overall bottom of a lifting device for ship maintenance according to the present invention;

[0025] Figure 4 It is a schematic diagram of the side structure of a lifting assembly of a lifting device for ship maintenance of the present invention;

[0026] Figure 5 This is a schematic diagram of the surface structure of an insert frame of a lifting device for ship maintenance according to the present invention;

[0027] Figure 6 This is a schematic diagram of the binding assembly structure of a lifting device for ship maintenance according to the present invention;

[0028] Figure 7 The present invention is a schematic diagram of the connection between a binding assembly of a lifting device for ship maintenance and a first arc block and a second arc block.

[0029] In the figure: 1. base; 11. moving notch; 2. top frame; 21. bidirectional screw rod; 22. motor; 23. moving frame; 24. moving slot; 25. moving plate; 3. stop block; 31. slot; 4. lifting assembly; 41. electric winch; 42. traction rope; 43. stud; 44. lifting rope; 45. slider; 46. vertical frame; 5. binding assembly; 51. first electric push rod; 52. vertical plate; 53. connecting rod; 54. supporting rope; 55. first arc block; 56. second arc block; 57. screw barrel; 58. insertion frame; 59. spring; 510. insertion rod; 511. second electric push rod; 512. sliding frame. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 7 The present invention provides a technical solution: a lifting device for ship maintenance, comprising a base 1, wherein the base 1 is provided with two groups, a water area is connected in the middle of the two groups of bases 1, a top frame 2 is fixed on the top of the base 1, and two mobile frames 23 are symmetrically slidably installed on the upper end of the top frame 2, two groups of electric winches 41 are symmetrically installed on the top surface of the mobile frame 23, a lifting rope 44 is passed through one end of the bottom of the electric winch 41, two groups of abutments 3 are provided on the inner side surfaces of the two bases 1, and a binding component 5 is provided inside the abutment 3, the binding component 5 includes a supporting rope 54, both ends of the supporting rope 54 are connected to two corresponding abutments 3 in the transverse direction, a card slot 31 is opened on the surface of the abutment 3, the upper end of the card slot 31 is slidably inserted with a first arc block 55, and the lower end of the card slot 31 is slidably inserted with a first arc block 55. A second arc block 56 is connected, and both ends of the supporting rope 54 slide through the first arc block 55 and the second arc block 56. An insertion frame 58 is fixed to the back of the block 3, and a vertical frame 46 is slidably inserted inside the insertion frame 58. The top of the vertical frame 46 is fixedly connected to the outer side of the mobile frame 23. This device is mainly aimed at some smaller ships, such as small ships or yachts, etc., and can also be used for disassembly parts of some medium-sized ships. The ship passes through the water area and enters the middle of the two bases 1. The block 3 contacts the two sides of the bottom of the ship. After the lifting rope 44 of the lifting component 4 is connected with the supporting rope 54 of the binding component 5, the bottom and both sides of the two ends of the ship are wrapped. Then the lifting component 4 lifts the ship, and the binding component 5 applies an upward propulsion force to the bottom of the ship, while maintaining the stability of the ship during the lifting process.

[0032] In this embodiment, a bidirectional screw rod 21 is rotatably installed on the top of the top frame 2 through a bearing seat, and the two ends of the two groups of the moving frames 23 are respectively threadedly sleeved on the two end surfaces of the bidirectional screw rod 21, and the position of the top frame 2 corresponding to one end of the bidirectional screw rod 21 is fixed with a motor 22, and the output end of the motor 22 is fixedly connected to the bidirectional screw rod 21, and two moving grooves 24 are symmetrically provided on the surface of the moving frame 23, and a moving plate 25 is slidably installed inside the moving groove 24, and the electric winch 41 is fixed on the top of the moving plate 25, and the base 1 is provided with a moving notch 11 at the position where the insertion frame 58 passes through, and the insertion frame 58 slides out of the moving frame 21. The gap 11 is connected with the vertical frame 46 and the insertion frame 58, and the motor 22 drives the bidirectional screw rod 21 to rotate. The two movable frames 23 slide along the top frame 2 to adjust the distance between the front and rear lifting components 4. At the same time, the vertical frame 46 drives the bottom frame and the binding component 5 to slide synchronously along the movable gap 11 of the base 1, and adjusts the length of the ship to ensure that the lifting rope 44 and the supporting rope 54 can be wrapped around the two ends of the ship after binding as much as possible. The position of the electric winch 41 is slid along the movable groove 24 on the surface of the movable frame 23. The electric winch 41 is a prior art. In this device, the electric winch 41 has two winding shafts for winding the traction rope 42 and the lifting rope 44 respectively.

[0033] In this embodiment, the lifting component 4 also includes a slider 45, the slider 45 is slidably connected inside the vertical frame 46, and a traction rope 42 is fixed on the top of the slider 45, and the other end of the traction rope 42 passes through the top of the vertical frame 46 and is connected to the other end of the electric winch 41. The binding component 5 also includes a plug rod 510, the slider 45 is slidably inserted with the plug rod 510, and one end of the plug rod 510 passes through the inside of the stop block 3 and is rotatably connected to the first arc block 55 through the rotating shaft, and the outer surface of the other end of the plug rod 510 is sleeved with a spring 59, and the other end of the spring 59 is fixedly connected to the slider 45, when the lifting rope 44 and the supporting rope 54 are connected After the connection, the electric winch 41 reels the lifting rope 44 and the traction rope 42 at the same time, the lifting rope 44 drives the ship to rise, and the traction rope 42 pulls the slider 45 to slide upward along the vertical frame 46, and at the same time the first arc block 55 and the insertion rod 510 also slide upward, and the first arc block 55 enters the surface of the lifting rope 44. Through the elastic force of the spring 59, the insertion rod 510 drives the first arc block 55 to always contact the outer wall of the side of the ship. Because the first arc block 55 is sleeved on the surface of the lifting rope 44, part of the lifting rope 44 will also stick to the side of the ship, so as to increase the contact area between the U-shaped rope body and the ship, and increase the stability during the lifting process by wrapping.

[0034] In this embodiment, a sliding frame 512 is slidably installed at a position where the bottom of the base 1 is in the same straight line as the stop block 3, and one end of the sliding frame 512 is fixedly connected to the stop block 3, and a vertical plate 52 is slidably connected inside the sliding frame 512, and a connecting rod 53 is rotatably connected to the surface of the vertical plate 52 through a rotating shaft, and the other end of the connecting rod 53 is rotatably connected to the bottom of the second arc block 56 through a rotating shaft, and the first electric push rod 51 is fixed on both sides of the sliding frame 512, and the extended end of the first electric push rod 51 is fixedly connected to the vertical plate 52, and the vertical plate 52 is located at the connecting rod 53. A second electric push rod 511 is installed on the upper end surface of the installation position through a rotating shaft. The extended end of the second electric push rod 511 is slidably sleeved on the surface of the connecting rod 53 through a sleeve frame. The insertion frame 58 can be driven by a separate electric push rod or a screw to translate along the surface of the base 1, and the block 3 is pushed outward and attached to both sides of the bottom of the ship. At this time, the sliding frame 512 and the connecting rod 53 partially move synchronously, the first arc block 55 and the second arc block 56 are in contact with the surface of the ship, and after the connection of the lifting rope 44 and the supporting rope 54 is completed, the insertion frame 58 and the block 3 are separately retracted. The first electric push rod 51 drives the vertical plate 52 to move to both sides of the base 1, and keeps the connection between the connecting rod 53 and the second stop block 3. At this time, the second stop block 3 is still in contact with the surface of the ship. Then, when the lifting assembly 4 drives the ship to rise, the second electric push rod 511 drives the connecting rod 53 to rotate. The connecting rods 53 at four positions form an inclined support frame, which cooperates with the second arc block 56 to support the bottom surface of the ship, and at the same time assists the lifting assembly 4 to lift the ship, reducing the pressure of the lifting assembly 4. The second electric push rod 511 and the connecting rod The connection of 53 is connected through a sleeve. Simply put, the sleeve is slidably sleeved on the surface of the connecting rod 53 and is rotationally connected to the extended end of the second electric push rod 511, and then the extended end of the second electric push rod 511 pushes the connecting rod 53 to rotate along the vertical plate 52, and the connection relationship between the two is maintained by the sleeve, because at this time the block 3 has been retracted to the vicinity of the base 1 and separated from the first arc block 55 and the second arc block 56, thereby facilitating the adjustment of the position of the first arc block 55 and the second arc block 56, and the rotation of the connecting rod 53 will not be interfered with by the block 3.

[0035] In this embodiment, a stud 43 is installed at the bottom of the lifting rope 44 through a rotating shaft, and a screw barrel 57 is fixed on the top of both ends of the supporting rope 54, and the stud 43 can be threadedly inserted into the screw barrel 57. The outer diameter of the screw barrel 57 is smaller than the supporting rope 54 and the lifting rope 44. After the ship enters the water area between the two bases 1, the positions of the lifting component 4 and the binding component 5 are adjusted to match the length of the ship, and then the electric winch 41 unwinds the lifting rope 44, and the screw barrel 57 of the supporting rope 54 is maintained at the top of the stop block 3. The stud 43 is rotated to insert it into the screw barrel 57, so that the connection between the lifting rope 44 and the supporting rope 54 can be completed, thereby forming a U-shaped wrapped rope body, which can increase the contact range with the bottom of the ship, and the first arc block 55 can slide along the supporting rope 54 into the surface of the lifting rope 44 to make the lifting rope 44 contact with the surfaces of both sides of the ship as much as possible according to the height of the ship.

[0036] When the device is used, the ship passes through the water area and enters the middle of the two bases 1. Through the connection between the vertical frame 46 and the insertion frame 58, the motor 22 drives the bidirectional screw rod 21 to rotate, and the two moving frames 23 slide along the top frame 2 to adjust the spacing between the front and rear two sets of lifting components 4. At the same time, the vertical frame 46 drives the bottom frame and the binding component 5 to slide synchronously along the moving notch 11 of the base 1, and adjusts according to the length of the ship to ensure that the lifting rope 44 and the supporting rope 54 can be wrapped around the two ends of the ship after binding as much as possible, and contact the two sides of the bottom of the ship through the stop block 3. The stud 43 is rotated and inserted into the screw barrel 57 to complete the connection of the lifting rope 44 and the supporting rope 54. The electric winch 41 simultaneously reels the lifting rope 44 and the traction rope 42, and the lifting rope 44 drives the ship to rise. The traction rope 42 pulls the slider 45 to slide upward along the vertical frame 46. At the same time, the first arc block 55 and the insertion rod 510 will also slide upward, and the first arc block 55 enters the surface of the lifting rope 44. Through the elastic force of the spring 59, the insertion rod 510 drives the first arc block 55 to always contact the outer wall of the side of the ship. , because the first arc block 55 is sleeved on the surface of the lifting rope 44, part of the lifting rope 44 will also be attached to the side of the ship, so as to increase the contact area between the U-shaped rope body and the ship, and increase the stability during the lifting process by wrapping, and push the block 3 outward to stick to both sides of the bottom of the ship. At this time, the sliding frame 512 and part of the connecting rod 53 move synchronously, and the first arc block 55 and the second arc block 56 are in contact with the surface of the ship. After the connection between the lifting rope 44 and the supporting rope 54 is completed, the insertion frame 58 and the block 3 are separately retracted to both sides of the base 1, and the movement of the vertical plate 52 is driven by the first electric push rod 51 to maintain the connection between the connecting rod 53 and the second block 3, and at this time the second block 3 is still in contact with the surface of the ship. Subsequently, in the process of the lifting assembly 4 driving the ship to rise, the second electric push rod 511 is used to push the connecting rod 53 to rotate, and the connecting rods 53 at four positions form an inclined support frame, which cooperates with the second arc block 56 to support the bottom surface of the ship, and at the same time assists the lifting assembly 4 to lift the ship and reduce the pressure of the lifting assembly 4.

[0037] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lifting device for ship maintenance, comprising a base (1) and a lifting assembly (4), characterized in that: The base (1) is provided with two groups, and a water area is connected between the two groups of bases (1). A top frame (2) is fixed on the top of the base (1), and two mobile frames (23) are symmetrically slidably installed on the upper end of the top frame (2). Two groups of electric winches (41) are symmetrically installed on the top surface of the mobile frame (23), and a lifting rope (44) is passed through one end of the bottom of the electric winch (41). Two groups of stop blocks (3) are provided on the inner side surfaces of the two bases (1), and a binding component (5) is provided inside the stop blocks (3). The binding component (5) includes a supporting rope (54). The supporting rope (54) is provided on the inner side surfaces of the two bases (1). The two ends of the rope (54) are connected to two corresponding blocks (3) in the transverse direction. A slot (31) is provided on the surface of the block (3). A first arc block (55) is slidably inserted at the upper end of the slot (31), and a second arc block (56) is slidably inserted at the lower end of the slot (31). The two ends of the supporting rope (54) slide through the first arc block (55) and the second arc block (56). An insertion frame (58) is fixed on the back of the block (3). A vertical frame (46) is slidably inserted inside the insertion frame (58). The top of the vertical frame (46) is fixedly connected to the outer side of the movable frame (23).

2. A lifting device for ship maintenance according to claim 1, characterized in that: A bidirectional screw rod (21) is rotatably mounted on the top of the top frame (2) via a bearing seat, and the two ends of the two groups of movable frames (23) are respectively threadedly sleeved on the two end surfaces of the bidirectional screw rod (21), and a motor (22) is fixed to the top frame (2) at a position corresponding to one end of the bidirectional screw rod (21), and the output end of the motor (22) is fixedly connected to the bidirectional screw rod (21).

3. A lifting device for ship maintenance according to claim 1, characterized in that: Two moving grooves (24) are symmetrically provided on the surface of the moving frame (23), and a moving plate (25) is slidably installed inside the moving groove (24), and the electric winch (41) is fixed on the top of the moving plate (25).

4. A lifting device for ship maintenance according to claim 3, characterized in that: The lifting assembly (4) further comprises a slider (45), the slider (45) is slidably connected inside the vertical frame (46), a traction rope (42) is fixed to the top of the slider (45), and the other end of the traction rope (42) passes through the top of the vertical frame (46) and is connected to the other end of the electric winch (41).

5. A lifting device for ship maintenance according to claim 4, characterized in that: A stud (43) is rotatably mounted on the bottom of the suspension rope (44) via a rotating shaft, and screw barrels (57) are fixed on the tops of both ends of the support rope (54), and the stud (43) can be threadedly inserted into the screw barrel (57), and the outer diameter of the screw barrel (57) is smaller than that of the support rope (54) and the suspension rope (44).

6. A lifting device for ship maintenance according to claim 4, characterized in that: The binding assembly (5) also includes an insertion rod (510), the insertion rod (510) is slidably inserted into the interior of the slider (45), and one end of the insertion rod (510) is inserted into the interior of the stop block (3) and is rotatably connected to the first arc block (55) via a rotating shaft, and the outer surface of the other end of the insertion rod (510) is sleeved with a spring (59), and the other end of the spring (59) is fixedly connected to the slider (45).

7. A lifting device for ship maintenance according to claim 6, characterized in that: A sliding frame (512) is slidably mounted at a position on the same straight line as the bottom of the base (1) and the stop block (3), and one end of the sliding frame (512) is fixedly connected to the stop block (3), and a vertical plate (52) is slidably connected inside the sliding frame (512), and a connecting rod (53) is rotatably connected to the surface of the vertical plate (52) via a rotating shaft, and the other end of the connecting rod (53) is rotatably connected to the bottom of the second arc block (56) via a rotating shaft.

8. A lifting device for ship maintenance according to claim 7, characterized in that: A first electric push rod (51) is fixed on both sides of the sliding frame (512), and an extended end of the first electric push rod (51) is fixedly connected to the vertical plate (52).

9. A lifting device for ship maintenance according to claim 8, characterized in that: A second electric push rod (511) is rotatably mounted on the upper end surface of the vertical plate (52) located at the mounting position of the connecting rod (53) via a rotating shaft, and an extended end of the second electric push rod (511) is slidably sleeved on the surface of the connecting rod (53) via a sleeve frame.

10. A lifting device for ship maintenance according to claim 1, characterized in that: The base (1) is provided with a movable notch (11) corresponding to the position where the insertion frame (58) passes through, and the insertion frame (58) slides out of the movable notch (11).

Images