A ship hull lifting device with anti-collision function

Abstract

This invention discloses a ship lifting device with anti-collision function, belonging to the field of lifting equipment technology. It includes a mounting plate, a lifting unit, an anti-breakage unit, an anti-wear unit, an anti-overturning unit, and an anti-collision unit. The mounting plate is used to install and fix the lifting unit. The anti-breakage unit prevents the sling from breaking due to sudden tension changes. The anti-wear unit prevents the sling from wearing down due to friction caused by the swinging of the load. The anti-overturning unit prevents the lifting device from overturning due to the forward and backward swinging of the load. The anti-collision unit prevents the load from swaying and colliding with the ship's hull. After the lifting unit lifts the load, it prevents the load from swaying due to waves and wind. The anti-breakage unit adjusts the tension of the sling to prevent breakage. The anti-wear unit reduces the sling's swing and prevents breakage due to friction. The anti-overturning unit prevents the lifting device from overturning due to the forward and backward swinging of the load. The anti-collision unit prevents the load from colliding with the ship's hull, thus avoiding transportation hazards and cargo damage.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, specifically a ship hull lifting device with anti-collision function. Background Technology

[0002] In the fields of shipbuilding, repair, and marine engineering, hull section lifting (such as deck sections and bulkhead sections) is one of the core processes. A single lifting operation typically involves a weight of 50-1000 tons, and the work environment is mostly in open slipways or offshore platforms, making them susceptible to natural factors such as wind, waves, and tides. This leads to multiple technical challenges for lifting equipment, including collision prevention, rope protection, tension control, and capsizing prevention. While existing hull lifting equipment possesses basic lifting capabilities, its safety and reliability under complex working conditions remain significantly insufficient.

[0003] The dock area is densely packed with equipment, posing a high-frequency collision risk between cranes and surrounding facilities, as well as other cranes. The swaying of the load causes intense relative motion and angular friction between the cables and pulleys, which is the main cause of cable wear. Existing technologies mainly delay wear by increasing the pulley diameter and using high-performance pads, which are passive solutions that only address the symptoms, not the root cause. In addition, the periodic rise and fall of waves causes the hull to move vertically, resulting in alternating loads on the slings: at wave crests, the hull rises, and the slings slacken instantly, creating surge slackening; at wave troughs, the hull falls, and the slings suddenly tighten, creating impact tension. This cyclical impact load can easily exceed the fatigue limit of the cables, leading to internal wire breakage, structural damage, and even fracture. There is a lack of effective strategies to deal with the dynamic overturning moment generated by the swaying of the load. The swaying of the load generates huge inertial forces, creating periodic impacts on the crane, seriously threatening the stability of the entire machine, and greatly increasing the probability of the entire unit overturning. Summary of the Invention

[0004] The purpose of this invention is to provide a ship hull lifting device with anti-collision function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The aforementioned anti-collision hull lifting device includes a mounting plate, a lifting unit, an anti-fracture unit, an anti-wear unit, an anti-overturning unit, and an anti-collision unit. The mounting plate is fixedly connected to the horizontal plane of the hull deck. The lifting unit is fixedly connected to the mounting plate. The anti-fracture unit is fixedly connected to the lifting unit and has the function of adjusting the tension of the slings. The anti-wear unit is fixedly connected to the lifting unit and the anti-fracture unit. The anti-overturning unit is fixedly connected to the mounting plate, the anti-overturning unit is fixedly connected to the lifting unit, and the anti-collision unit is fixedly connected to the lifting unit.

[0007] The mounting plate is used to install and fix the lifting unit. The anti-breakage unit is used to prevent the sling from breaking due to sudden tension changes. The anti-wear unit is used to prevent the sling from being worn by friction caused by the swinging of the load. The anti-tipping unit is used to prevent the lifting device from tipping over due to the back-and-forth swinging of the load. The anti-collision unit is used to prevent the load from swaying and colliding with the ship. After the lifting unit lifts the load, it prevents the load from swaying due to waves and sea winds. The anti-breakage unit adjusts the tension of the sling to prevent breakage. The anti-wear unit reduces the swinging of the sling and prevents the sling from breaking due to friction. The anti-tipping unit prevents the lifting device from tipping over due to the back-and-forth swinging of the load. The anti-collision unit prevents the load from colliding with the ship, causing transportation dangers and cargo damage.

[0008] Furthermore, the lifting unit includes a support platform, an upright plate, a boom, an electric actuator, a conveyor reel, a rope, a hook, a motor housing, and a take-up reel. The support platform is fixedly mounted on the mounting plate, the upright plate is fixedly mounted on the support platform, one end of the boom is rotatably connected to the upright plate, and the other end of the boom is fixedly connected to the conveyor reel. The fixed end of the electric actuator is fixedly connected to the support platform, and the output end of the electric actuator is fixedly connected to the middle of the boom. One end of the rope is fixedly connected to the hook, and the other end of the rope is evenly wound around the take-up reel. The fixed end of the motor housing is fixedly mounted on the support platform, and the output end of the motor housing is fixedly connected to the take-up reel.

[0009] The controller starts the motor box, which drives the take-up drum to rotate, slowly retracting the rope and hook above the load. The worker hangs the load on the hook. At this time, the controller controls the electric push rod to extend, and the motor box reverses to drive the take-up drum to wind up one end of the rope and then stops rotating, keeping the load at a certain height for easy transportation. As the boom rotates along the upright plate, it moves the load, thus realizing the transportation of the load.

[0010] Furthermore, the anti-fracture unit includes a bending frame, a slip ring, a connecting rod, a mounting box, a straight cylinder, and a gravity block. The bending frame is fixedly installed on the conveyor plate, the slip ring is slidably installed on the bending frame, the slip ring is fixedly connected to the connecting rod, the connecting rod is fixedly connected to the mounting box, the mounting box contains a straight cylinder, the gravity block is slidably installed inside the straight cylinder, and the straight cylinder has a rectangular groove.

[0011] Furthermore, the anti-breakage unit also includes a support plate, a return spring, a spring telescopic rod, a long rod, a conductive ring, a straight column, and a drive coil. One end of the support plate is fixedly connected to the gravity block, and the other end of the support plate is fixedly connected to one end of the return spring. The support plate is slidably installed inside the straight cylinder. The other end of the return spring is fixedly connected to the inner surface of the straight cylinder. The output end of the spring telescopic rod is fixedly connected to the support plate, and the fixed end of the spring telescopic rod is fixedly connected to the hook. The output end of the spring telescopic rod is slidably connected to the straight cylinder. One end of the long rod is fixedly connected to the gravity block, and the other end of the long rod passes through the rectangular groove of the straight cylinder and is fixedly connected to the conductive ring. The conductive ring is electrically connected to the motor box. The straight column is fixedly installed on the inner surface of the mounting box, and the drive coil is evenly wound on the surface of the straight column.

[0012] During cargo transport, when waves impact the hull, causing it to move vertically, the gravity block moves downwards under the impact force as the hull is pushed to its highest point. This compresses the return spring via the support plate and simultaneously pushes the spring extension rod downwards. Due to the lag of the load, the load pulls the rope taut via the hook, causing the rope to become taut. As the gravity block moves downwards, the conductive ring moves downwards through the transmission action of the long rod. The conductive ring contacts the drive coil on the vertical column below. At this point, the current supplied by the controller to the drive coil is transmitted to the motor box through the conductive ring, causing the motor box to drive the take-up drum to rotate forward, allowing the rope to be released a certain length to prevent it from becoming taut. To prevent breakage, during the descent of the ship back to sea level after passing through waves, the gravity block moves upward under the restoring force of the return spring and the spring extension rod. At this time, due to the weightlessness of the suspended load, the rope becomes relaxed. As the gravity block moves upward, the conductive ring moves upward through the transmission action of the long rod. The conductive ring contacts the drive coil on the upper straight column. At this time, the current supplied by the controller to the drive coil is transmitted to the motor box through the conductive ring, causing the motor box to drive the take-up drum to reverse, causing the rope to wind up a certain length. This slightly tightens the rope, reducing the tension impact on the rope due to the periodic tension and relaxation caused by the waves, thus preventing the rope from breaking.

[0013] Furthermore, the wear-resistant unit includes a guide ring, a support plate, a front electromagnet, a rear electromagnet, and a cross plate. The guide ring is fixedly installed on the conveyor plate, and the rope is slidably connected to the guide ring. One end of the support plate is fixedly connected to the conveyor plate, and the other end of the support plate is fixedly connected to the front electromagnet. The rear electromagnet is fixedly connected to the conveyor plate, and the front electromagnet is connected to the rear electromagnet through the cross plate.

[0014] Furthermore, the wear-resistant unit also includes a buffer spring, an arc-shaped metal plate, a short rod, a telescopic light shield, a photoresistor, and a light source. One end of the buffer spring is fixedly connected to the horizontal plate, and the other end of the buffer spring is fixedly connected to the arc-shaped metal plate. The arc-shaped metal plate is fixedly connected to a rope. One end of the short rod is fixedly connected to the long rod, and the other end of the short rod is fixedly connected to the telescopic end of the telescopic light shield. The fixed end of the telescopic light shield is fixedly installed at the end of the mounting box away from the ship's deck. The photoresistor is fixedly installed on the inner surface of the mounting box at the end away from the telescopic light shield. The light source is fixedly installed on the inner surface of the mounting box at the end near the telescopic light shield. The photoresistor is electrically connected to the front electromagnet and the rear electromagnet, and the front and rear electromagnets have opposite polarities.

[0015] During the impact of waves on the hull, the size of the waves varies. Larger waves cause greater swaying of the hull, increasing the amplitude and frequency of the swaying of the hoisting rope. During the impact of large waves, the descent of the weight block within the cylinder increases. Under the transmission action of the long and short rods, the retraction distance of the telescopic light shield increases, resulting in less light being blocked. At this time, the resistance of the photoresistor decreases under high light intensity, and the current supplied by the controller to the front and rear electromagnets increases. The swaying of the hoisting load causes the rope and the curved metal plate to swing. As the curved metal plate oscillates between the front and rear electromagnets and compresses the buffer spring, its internal magnetic flux changes. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the curved metal plate, forming eddy currents. These eddy currents experience an Ampere force in the magnetic field, in the opposite direction to the movement of the metal plate, creating a damping force. This damping force overcomes the swaying amplitude and frequency of the curved metal plate, reducing rope wear. Because the weight block... During the process of being impacted and raised until returning to a stable initial state, the initial movement of the gravity block is the largest, causing the area of ​​the telescopic light-blocking plate to block the light source to increase from its minimum to its maximum, resulting in the largest change in the amount of blocking. As the movement of the gravity block decreases, the change in the area of ​​the light source blocked gradually decreases, thus achieving a dynamic change in the area of ​​the light source blocked. The initial range of the gravity block's movement causes the current received by the front and rear electromagnets to change from its maximum to its minimum, and finally the change in current gradually decreases, achieving a dynamic change in the damping force of the curved metal plate and the rope. This dynamic adjustment is to avoid the excessive damping force generated by the constant maximum current, which would cause the rope to be subjected to a violent impact in the early stage of swinging, leading to local stress concentration or increased surface wear. The dynamic swing suppression adjustment strategy provides peak damping force when the swing amplitude is maximum, quickly suppressing large swings, and then gradually reduces the damping force as the swing amplitude decreases, avoiding the phenomenon of the rope swinging hard landing. This dynamic matching of damping force and swing kinetic energy can make the rope more evenly stressed and extend the rope replacement cycle.

[0016] Furthermore, the anti-tipping unit includes a hydraulic column, an electric telescopic rod, a chute, and a counterweight. One end of the hydraulic column is fixedly mounted on the mounting plate, and the other end of the hydraulic column is fixedly connected to the support platform. The fixed end of the electric telescopic rod is fixedly mounted on the chute, and the telescopic end of the electric telescopic rod is fixedly connected to the counterweight. The chute is fixedly mounted on the mounting plate, and the counterweight is slidably connected to the chute. Pressure sensors are provided at the bottom of both ends of the chute.

[0017] During the swinging of the suspended object, in order to prevent the device from overturning, a certain buffer adjustment is made by the hydraulic column. When the pressure sensor at one end of the chute detects that the pressure exceeds the set value, the controller controls the electric telescopic rod to start and drive the counterweight to move to the other side of the chute to balance the pressure and prevent the device from overturning.

[0018] Furthermore, the anti-collision unit includes a barrier plate and an airbag. The barrier plate is rotatably mounted on the support platform, and the airbag is fixedly mounted on the side of the barrier plate near the suspended object. The airbag is connected to an external air pump through an air pipe.

[0019] During the swinging process of the suspended object, in order to prevent the suspended object from swinging too much and impacting the ship's hull and causing damage, an air pump is used to deliver gas into the airbag to provide cushioning against impact, thereby achieving collision prevention.

[0020] Furthermore, there are two straight columns, and in the vertical direction, the current flowing through the drive coil on the surface of the upper column is opposite to the current flowing through the drive coil on the surface of the lower column.

[0021] To prevent rope breakage caused by the tension and relaxation of the hoisting rope when the ship is hit by waves, conductive rings are connected to different straight columns to supply current in different directions to the motor box, controlling the feeding and winding of the rope by the take-up drum. This addresses the tension and relaxation of the rope and extends its service life.

[0022] Furthermore, a controller is provided on the support platform.

[0023] To facilitate staff control of the lifting device's start and stop, and to achieve automated control of the entire device, appropriate measures can be adjusted promptly to address various situations.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention addresses the issue of a sling being used during cargo transport. When waves impact the hull, causing it to move vertically, a gravity block moves downwards under the impact force as the hull reaches its highest point. This pressure compresses the return spring via a support plate, simultaneously pushing the spring extension rod downwards. Due to the lag of the load, the load pulls the rope taut via the hook, creating tension. As the gravity block moves downwards, a conductive ring moves downwards via the transmission of the long rod. The conductive ring contacts the drive coil on the lower column. The current supplied by the controller to the drive coil is then transmitted through the conductive ring to the motor housing, causing the motor housing to rotate the take-up drum forward. This allows the rope to be released a certain length, preventing further rope loss. The rope's tautness could lead to breakage. As the ship descends back to sea level after passing through waves, the gravity block moves upward under the restoring force of the return spring and the spring extension rod. At this time, due to the weightlessness of the suspended load, the rope becomes slack. As the gravity block moves upward, the conductive ring moves upward through the transmission action of the long rod. The conductive ring contacts the drive coil on the upper straight column. At this time, the current supplied by the controller to the drive coil is transmitted to the motor box through the conductive ring, causing the motor box to drive the take-up drum to reverse, causing the rope to wind up a certain length. This slightly tightens the rope, reducing the impact of the periodic tension and relaxation of the rope due to the waves, thus preventing the rope from breaking.

[0026] 2. This invention addresses the issue of swaying during the impact of ocean waves. Larger waves cause greater swaying of the hull, increasing the amplitude and frequency of the rope's sway. During this impact, the weight block descends more significantly within the cylinder, increasing the retraction distance of the telescopic light-blocking plate through the transmission action of the long and short rods. This reduces the area of ​​the light source blocked, causing the photoresistor to lose resistance under high light intensity. The controller then transmits a larger current to the front and rear electromagnets via the photoresistor. The swaying of the load causes the rope and the curved metal plate to swing. As the curved metal plate oscillates between the front and rear electromagnets and compresses the buffer spring, its internal magnetic flux changes. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the curved metal plate, forming eddy currents. These eddy currents experience an Ampere force in the magnetic field, opposite to the direction of the metal plate's movement, creating a damping force. This damping force overcomes the swaying amplitude and frequency of the curved metal plate, reducing rope wear. During the process of the force block being impacted and rising until it returns to its initial stable state, the initial rise and fall of the force block is the largest, causing the area of ​​the telescopic light-blocking plate to block the light source to increase from its minimum to its maximum, resulting in the largest change in the amount of blocking. As the rise and fall of the force block decreases, the change in the area of ​​the light source blocked gradually decreases, thus achieving a dynamic change in the area of ​​the light source blocked. The initial rise and fall range of the force block causes the current received by the front and rear electromagnets to change from its maximum to its minimum, and finally the change in current gradually decreases, achieving a dynamic change in the damping force of the arc-shaped metal plate and the rope. This dynamic adjustment is to avoid the excessive damping force generated by the constant maximum current, which would cause the rope to be subjected to a violent impact in the early stage of swing, leading to local stress concentration or increased surface wear. The dynamic swing suppression adjustment strategy provides peak damping force when the swing amplitude is maximum, quickly suppressing large swings, and then gradually reduces the damping force as the swing amplitude decreases, avoiding the phenomenon of the rope swinging hard landing. This dynamic matching of damping force and swing kinetic energy can make the rope more evenly stressed and extend the rope replacement cycle. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall appearance structure of a ship hull lifting device with anti-collision function according to the present invention;

[0028] Figure 2 This invention relates to a ship hull lifting device with anti-collision function. Figure 1 Another perspective structural diagram;

[0029] Figure 3 This invention relates to a ship hull lifting device with anti-collision function. Figure 2 A partial enlarged view of the structure at point A in the middle;

[0030] Figure 4This is a schematic diagram of the installation position of the buffer spring and the arc-shaped metal plate of a ship hull lifting device with anti-collision function according to the present invention.

[0031] Figure 5 This is a schematic diagram of the external structure of the lifting unit of a ship hull lifting device with anti-collision function according to the present invention;

[0032] Figure 6 This invention relates to a ship hull lifting device with anti-collision function. Figure 5 A partial enlarged view of the structure at point B in the middle;

[0033] Figure 7 This is a schematic diagram of the photoresistor installation position structure of a ship hull lifting device with anti-collision function according to the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the mounting box of a ship hull lifting device with anti-collision function according to the present invention.

[0035] In the diagram: 1. Mounting plate; 2. Lifting unit; 21. Support platform; 22. Vertical plate; 23. Boom; 24. Electric actuator; 25. Conveyor tray; 26. Rope; 27. Hook; 28. Motor box; 29. ​​Reel; 3. Anti-breakage unit; 31. Bending frame; 32. Slip ring; 33. Connecting rod; 34. Mounting box; 35. Straight cylinder; 36. Gravity block; 37. Support plate; 38. Return spring; 39. Spring telescopic rod; 310. Long rod; 311. Conductive ring; 3 12. Straight column; 313. Drive coil; 4. Anti-wear unit; 41. Guide ring; 42. Support plate; 43. Front electromagnet; 44. Rear electromagnet; 45. Horizontal plate; 46. Buffer spring; 47. Curved metal plate; 48. Short rod; 49. Telescopic light shield; 410. Photoresistor; 411. Light source; 5. Anti-tipping unit; 51. Hydraulic column; 52. Electric telescopic rod; 53. Slide groove; 54. Counterweight; 6. Anti-collision unit; 61. Baffle plate; 62. Airbag. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Figures 1-8 As shown, the present invention provides a technical solution:

[0038] like Figure 1As shown, a ship hull lifting device with anti-collision function includes a mounting plate 1, a lifting unit 2, an anti-fracture unit 3, an anti-wear unit 4, an anti-overturning unit 5, and an anti-collision unit 6. The mounting plate 1 is fixedly connected to the horizontal plane of the ship's deck. The lifting unit 2 is fixedly connected to the mounting plate 1. The anti-fracture unit 3 is fixedly connected to the lifting unit 2 and has the function of adjusting the tension of the slings. The anti-wear unit 4 is fixedly connected to the lifting unit 2 and the anti-fracture unit 3. The anti-overturning unit 5 is fixedly connected to the mounting plate 1 and the lifting unit 2. The anti-collision unit 6 is fixedly connected to the lifting unit 2.

[0039] Mounting plate 1 is used to install and fix lifting unit 2. Anti-breakage unit 3 is used to prevent the sling from breaking due to sudden tension changes. Anti-wear unit 4 is used to prevent the sling from being worn by the swinging friction of the suspended object. Anti-tipping unit 5 is used to prevent the lifting device from tipping over due to the back-and-forth swinging of the heavy object. Anti-collision unit 6 is used to prevent the suspended object from swaying and colliding with the hull. After the lifting unit 2 lifts the heavy object, it prevents the suspended object from swaying due to waves and sea wind. The anti-breakage unit 3 adjusts the tension of the sling to prevent breakage. The anti-wear unit 4 reduces the swinging of the sling and prevents the sling from breaking due to friction. The anti-tipping unit 5 prevents the lifting device from tipping over due to the back-and-forth swinging of the suspended object. The anti-collision unit 6 prevents the suspended object from colliding with the hull, causing transportation danger and cargo damage.

[0040] like Figures 3-6 As shown, the lifting unit 2 includes a support platform 21, a vertical plate 22, a boom 23, an electric push rod 24, a conveyor plate 25, a rope 26, a hook 27, a motor housing 28, and a take-up drum 29. The support platform 21 is fixedly installed on the mounting plate 1, and the vertical plate 22 is fixedly installed on the support platform 21. One end of the boom 23 is rotatably connected to the vertical plate 22, and the other end of the boom 23 is fixedly connected to the conveyor plate 25. The fixed end of the electric push rod 24 is fixedly connected to the support platform 21, and the output end of the electric push rod 24 is fixedly connected to the middle of the boom 23. One end of the rope 26 is fixedly connected to the hook 27, and the other end of the rope 26 is evenly wound around the take-up drum 29. The fixed end of the motor housing 28 is fixedly installed on the support platform 21, and the output end of the motor housing 28 is fixedly connected to the take-up drum 29.

[0041] The controller starts the motor box 28, which drives the take-up drum 29 to rotate, slowly retracting the rope 26 and hook 27 above the load. The worker hangs the load on the hook 27. At this time, the controller controls the electric push rod 24 to extend, and the motor box 28 reverses to drive the take-up drum 29 to wind up one end of the rope 26 and then stops rotating, keeping the load at a certain height for easy transportation. As the boom 23 rotates along the upright plate 22, it moves the load, thus realizing the transportation of the load.

[0042] like Figures 6-8As shown, the anti-fracture unit 3 includes a bending frame 31, a slip ring 32, a connecting rod 33, a mounting box 34, a straight cylinder 35, and a gravity block 36. The bending frame 31 is fixedly mounted on the conveyor plate 25, the slip ring 32 is slidably mounted on the bending frame 31, the slip ring 32 is fixedly connected to the connecting rod 33, the connecting rod 33 is fixedly connected to the mounting box 34, the straight cylinder 35 is provided inside the mounting box 34, the gravity block 36 is slidably mounted inside the straight cylinder 35, and the straight cylinder 35 has a rectangular groove.

[0043] like Figure 8 As shown, the anti-breakage unit 3 also includes a support plate 37, a reset spring 38, a spring telescopic rod 39, a long rod 310, a conductive ring 311, a straight column 312, and a drive coil 313. One end of the support plate 37 is fixedly connected to the gravity block 36, and the other end of the support plate 37 is fixedly connected to one end of the reset spring 38. The support plate 37 is slidably installed inside the straight cylinder 35. The other end of the reset spring 38 is fixedly connected to the inner surface of the straight cylinder 35. The output end of the spring telescopic rod 39 is fixedly connected to the support plate 37, and the fixed end of the spring telescopic rod 39 is fixedly connected to the hook 27. The output end of the spring telescopic rod 39 is slidably connected to the straight cylinder 35. One end of the long rod 310 is fixedly connected to the gravity block 36, and the other end of the long rod 310 passes through the rectangular groove of the straight cylinder 35 and is fixedly connected to the conductive ring 311. The conductive ring 311 is electrically connected to the motor box 28. The straight column 312 is fixedly installed on the inner surface of the mounting box 34, and the drive coil 313 is evenly wound on the surface of the straight column 312.

[0044] During the transport of the load, when the hull is impacted by waves, causing it to move vertically, the gravity block 36 moves downwards under the impact force as the hull is pushed to its highest point. This compresses the return spring 38 via the support plate 37 and simultaneously pushes the spring extension rod 39 downwards. Due to the lag of the load, the load pulls the rope 26 taut via the hook 27, causing the rope 26 to become taut. As the gravity block 36 moves downwards, the conductive ring 311 moves downwards via the transmission action of the long rod 310. The conductive ring 311 contacts the drive coil 313 on the lower straight column 312. At this time, the current supplied by the controller to the drive coil 313 is transmitted to the motor housing 28 through the conductive ring 311, causing the motor housing 28 to rotate the take-up drum 29 clockwise, allowing the rope 26 to be released a certain length to prevent it from becoming taut. As the ship descends back to sea level after passing through waves, the gravity block 36 moves upward under the restoring force of the return spring 38 and the spring extension rod 39. At this time, due to the weightlessness of the suspended load, the rope 26 becomes relaxed. During the upward movement of the gravity block 36, the conductive ring 311 moves upward through the transmission action of the long rod 310. The conductive ring 311 contacts the drive coil 313 on the upper straight column 312. At this time, the current supplied by the controller to the drive coil 313 is transmitted to the motor box 28 through the conductive ring 311, causing the motor box 28 to drive the take-up drum 29 to reverse, causing the rope 26 to wind up a certain length, making the rope 26 slightly taut. This avoids the periodic tension and relaxation of the rope 26 due to the waves, reducing the tension impact on the rope 26 and thus preventing the rope 26 from breaking.

[0045] like Figure 3 As shown, the wear-resistant unit 4 includes a guide ring 41, a support plate 42, a front electromagnet 43, a rear electromagnet 44, and a cross plate 45. The guide ring 41 is fixedly installed on the conveyor plate 25, and the rope 26 is slidably connected to the guide ring 41. One end of the support plate 42 is fixedly connected to the conveyor plate 25, and the other end of the support plate 42 is fixedly connected to the front electromagnet 43. The rear electromagnet 44 is fixedly connected to the conveyor plate 25, and the front electromagnet 43 is connected to the rear electromagnet 44 through the cross plate 45.

[0046] like Figure 4 , Figure 7 , Figure 8As shown, the anti-wear unit 4 also includes a buffer spring 46, an arc-shaped metal plate 47, a short rod 48, a telescopic light shield 49, a photoresistor 410, and a light source 411. One end of the buffer spring 46 is fixedly connected to the horizontal plate 45, and the other end of the buffer spring 46 is fixedly connected to the arc-shaped metal plate 47. The arc-shaped metal plate 47 is fixedly connected to the rope 26. One end of the short rod 48 is fixedly connected to the long rod 310, and the other end of the short rod 48 is fixedly connected to the telescopic end of the telescopic light shield 49. The fixed end of the telescopic light shield 49 is fixedly installed on the end of the mounting box 34 away from the ship's deck. The photoresistor 410 is fixedly installed on the inner surface of the end of the mounting box 34 away from the telescopic light shield 49. The light source 411 is fixedly installed on the inner surface of the end of the mounting box 34 close to the telescopic light shield 49. The photoresistor 410 is electrically connected to the front electromagnet 43 and the rear electromagnet 44. The front electromagnet 43 and the rear electromagnet 44 have opposite polarities.

[0047] During the impact of waves on the hull, the size of the waves varies. Larger waves cause greater swaying of the hull, increasing the swing amplitude and frequency of the hoisting rope 26. During the impact of large waves, the descent of the gravity block 36 within the straight cylinder 35 increases. Under the transmission action of the long rod 310 and the short rod 48, the retraction distance of the telescopic light shield 49 increases, resulting in less area of ​​the light source 411 being blocked. At this time, the resistance of the photoresistor 410 decreases under high light intensity. The controller transmits signals to the front electromagnet 43 and... As the current in the rear electromagnet 44 increases, the swing of the suspended object causes the rope 26 and the arc-shaped metal plate 47 to swing. During the swinging motion of the arc-shaped metal plate 47 between the front electromagnet 43 and the rear electromagnet 44, and as it compresses the buffer spring 46, the magnetic flux inside the plate changes. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the arc-shaped metal plate 47, thus forming eddy currents. These eddy currents are subjected to an Ampere force in the magnetic field, the direction of which is opposite to the direction of the plate's movement, forming a damping force. This damping force overcomes the swing amplitude and frequency of the arc-shaped metal plate 47, thereby reducing the wear on the rope 26. During the process of gravity block 36 being impacted and rising until it returns to its initial stable state, the initial rise and fall of gravity block 36 is the largest, causing the area of ​​the telescopic light shield 49 blocking the light source 411 to increase from its smallest to its largest, resulting in the largest change in the amount of obstruction. As the rise and fall of gravity block 36 decreases, the change in the area of ​​the light source 411 blocked gradually decreases, thus achieving a dynamic change in the area of ​​the light source 411 blocked. The initial rise and fall range of gravity block 36 causes the current received by the front electromagnet 43 and the rear electromagnet 44 to change from its largest to its smallest, and finally the change in current... The damping force of the curved metal plate 47 and the rope 26 is gradually reduced, achieving dynamic variation. This dynamic adjustment is to avoid the excessive damping force generated by the constant maximum current causing the rope 26 to be subjected to severe impact in the early stage of swing, resulting in local stress concentration or increased surface wear. The dynamic swing suppression adjustment strategy provides peak damping force when the swing amplitude is at its maximum, quickly suppressing large swings. Subsequently, the damping force is gradually reduced as the swing amplitude decreases to avoid the phenomenon of the rope 26 swinging hard landing. This dynamic matching of damping force and swing kinetic energy can make the rope 26 more uniformly stressed and extend the replacement cycle of the rope 26.

[0048] like Figure 2 As shown, the anti-tipping unit 5 includes a hydraulic column 51, an electric telescopic rod 52, a slide rail 53, and a counterweight 54. One end of the hydraulic column 51 is fixedly installed on the mounting plate 1, and the other end of the hydraulic column 51 is fixedly connected to the support platform 21. The fixed end of the electric telescopic rod 52 is fixedly installed on the slide rail 53, and the telescopic end of the electric telescopic rod 52 is fixedly connected to the counterweight 54. The slide rail 53 is fixedly installed on the mounting plate 1, and the counterweight 54 is slidably connected to the slide rail 53. Pressure sensors are provided at the bottom of both ends of the slide rail 53.

[0049] During the swinging of the suspended object, in order to prevent the device from overturning, the hydraulic column 51 performs a certain buffer adjustment. When the pressure sensor at one end of the slide 53 detects that the pressure exceeds the set value, the controller controls the electric telescopic rod 52 to start and drive the counterweight block 54 to move to the other side of the slide 53 to balance the pressure and prevent the device from overturning.

[0050] like Figure 2 As shown, the anti-collision unit 6 includes a baffle plate 61 and an airbag 62. The baffle plate 61 is rotatably mounted on the support platform 21, and the airbag 62 is fixedly mounted on the side of the baffle plate 61 near the suspended object. The airbag 62 is connected to an external air pump through an air pipe.

[0051] During the swinging process of the suspended object, in order to prevent the suspended object from swinging too much and impacting the hull and causing damage, gas is delivered to the airbag 62 by an air pump to provide cushioning for the impact of the suspended object, thereby achieving collision prevention.

[0052] like Figure 8 As shown, there are two straight columns 312. In the vertical direction, the current flowing through the drive coil 313 on the surface of the upper straight column 312 is opposite to the current flowing through the drive coil 313 on the surface of the lower straight column 312.

[0053] To prevent the rope 26 from breaking due to the tension and relaxation of the hoisting rope when the ship is hit by waves, the conductive ring 311 contacts different straight columns 312 to supply current in different directions to the motor box 28, which controls the take-up drum 29 to deliver and wind up the rope 26. This addresses the tension and relaxation of the rope 26 and extends its service life.

[0054] like Figure 5 As shown, a controller is installed on the support platform 21.

[0055] To facilitate staff control of the lifting device's start and stop, and to achieve automated control of the entire device, appropriate measures can be adjusted promptly to address various situations.

[0056] Working principle of the invention:

[0057] The controller starts the motor box 28, which drives the take-up drum 29 to rotate, slowly retracting the rope 26 and hook 27 above the load. The worker hangs the load on the hook 27. At this time, the controller controls the electric push rod 24 to extend, and the motor box 28 reverses to drive the take-up drum 29 to wind up one end of the rope 26 and then stops rotating, keeping the load at a certain height for easy transportation. As the boom 23 rotates along the upright plate 22, it moves the load, thus realizing the transportation of the load.

[0058] During the transport of the load, when the hull is impacted by waves, causing it to move vertically, the gravity block 36 moves downwards under the impact force as the hull is pushed to its highest point. This compresses the return spring 38 via the support plate 37 and simultaneously pushes the spring extension rod 39 downwards. Due to the lag of the load, the load pulls the rope 26 taut via the hook 27, causing the rope 26 to become taut. As the gravity block 36 moves downwards, the conductive ring 311 moves downwards via the transmission action of the long rod 310. The conductive ring 311 contacts the drive coil 313 on the lower straight column 312. At this time, the current supplied by the controller to the drive coil 313 is transmitted to the motor housing 28 through the conductive ring 311, causing the motor housing 28 to rotate the take-up drum 29 clockwise, allowing the rope 26 to be released a certain length to prevent it from becoming taut. As the ship descends back to sea level after passing through waves, the gravity block 36 moves upward under the restoring force of the return spring 38 and the spring extension rod 39. At this time, due to the weightlessness of the suspended load, the rope 26 becomes relaxed. During the upward movement of the gravity block 36, the conductive ring 311 moves upward through the transmission action of the long rod 310. The conductive ring 311 contacts the drive coil 313 on the upper straight column 312. At this time, the current supplied by the controller to the drive coil 313 is transmitted to the motor box 28 through the conductive ring 311, causing the motor box 28 to drive the take-up drum 29 to reverse, causing the rope 26 to wind up a certain length, making the rope 26 slightly taut. This avoids the periodic tension and relaxation of the rope 26 due to the waves, reducing the tension impact on the rope 26 and thus preventing the rope 26 from breaking.

[0059] During the impact of waves on the hull, the size of the waves varies. Larger waves cause greater swaying of the hull, increasing the swing amplitude and frequency of the hoisting rope 26. During the impact of large waves, the descent of the gravity block 36 within the straight cylinder 35 increases. Under the transmission action of the long rod 310 and the short rod 48, the retraction distance of the telescopic light shield 49 increases, resulting in less area of ​​the light source 411 being blocked. At this time, the resistance of the photoresistor 410 decreases under high light intensity. The controller transmits signals to the front electromagnet 43 and... As the current in the rear electromagnet 44 increases, the swing of the suspended object causes the rope 26 and the arc-shaped metal plate 47 to swing. During the swinging motion of the arc-shaped metal plate 47 between the front electromagnet 43 and the rear electromagnet 44, and as it compresses the buffer spring 46, the magnetic flux inside the plate changes. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the arc-shaped metal plate 47, thus forming eddy currents. These eddy currents are subjected to an Ampere force in the magnetic field, the direction of which is opposite to the direction of the plate's movement, forming a damping force. This damping force overcomes the swing amplitude and frequency of the arc-shaped metal plate 47, thereby reducing the wear on the rope 26. During the process of gravity block 36 being impacted and rising until it returns to its initial stable state, the initial rise and fall of gravity block 36 is the largest, causing the area of ​​the telescopic light shield 49 blocking the light source 411 to increase from its smallest to its largest, resulting in the largest change in the amount of obstruction. As the rise and fall of gravity block 36 decreases, the change in the area of ​​the light source 411 blocked gradually decreases, thus achieving a dynamic change in the area of ​​the light source 411 blocked. The initial rise and fall range of gravity block 36 causes the current received by the front electromagnet 43 and the rear electromagnet 44 to change from its largest to its smallest, and finally the change in current... The damping force of the curved metal plate 47 and the rope 26 is gradually reduced, achieving dynamic variation. This dynamic adjustment is to avoid the excessive damping force generated by the constant maximum current causing the rope 26 to be subjected to severe impact in the early stage of swing, resulting in local stress concentration or increased surface wear. The dynamic swing suppression adjustment strategy provides peak damping force when the swing amplitude is at its maximum, quickly suppressing large swings. Subsequently, the damping force is gradually reduced as the swing amplitude decreases to avoid the phenomenon of the rope 26 swinging hard landing. This dynamic matching of damping force and swing kinetic energy can make the rope 26 more uniformly stressed and extend the replacement cycle of the rope 26.

[0060] During the swinging of the suspended object, in order to prevent the device from overturning, the hydraulic column 51 performs a certain buffer adjustment. When the pressure sensor at one end of the slide 53 detects that the pressure exceeds the set value, the controller controls the electric telescopic rod 52 to start and drive the counterweight block 54 to move to the other side of the slide 53 to balance the pressure and prevent the device from overturning.

[0061] During the swinging process of the suspended object, in order to prevent the suspended object from swinging too much and impacting the hull and causing damage, gas is delivered to the airbag 62 by an air pump to provide cushioning for the impact of the suspended object, thereby achieving collision prevention.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A ship hull lifting device with anti-collision function, characterized in that: The aforementioned anti-collision hull lifting device includes a mounting plate, a lifting unit, an anti-fracture unit, an anti-wear unit, an anti-overturning unit, and an anti-collision unit. The mounting plate is fixedly connected to the horizontal plane of the hull deck. The lifting unit is fixedly connected to the mounting plate. The anti-fracture unit is fixedly connected to the lifting unit and has the function of adjusting the tension of the slings. The anti-wear unit is fixedly connected to the lifting unit and the anti-fracture unit. The anti-overturning unit is fixedly connected to the mounting plate, the anti-overturning unit is fixedly connected to the lifting unit, and the anti-collision unit is fixedly connected to the lifting unit. The lifting unit includes a support platform, upright plate, boom, electric push rod, conveyor plate, rope, hook, motor box and take-up drum; The anti-fracture unit includes a bending frame, a slip ring, a connecting rod, a mounting box, a straight cylinder, and a gravity block. The bending frame is fixedly installed on the conveyor tray, the slip ring is slidably installed on the bending frame, the slip ring is fixedly connected to the connecting rod, the connecting rod is fixedly connected to the mounting box, a straight cylinder is provided inside the mounting box, the gravity block is slidably installed inside the straight cylinder, and the straight cylinder has a rectangular groove. The anti-breakage unit also includes a support plate, a return spring, a spring telescopic rod, a long rod, a conductive ring, a straight column, and a drive coil. One end of the support plate is fixedly connected to a gravity block, and the other end of the support plate is fixedly connected to one end of the return spring. The support plate is slidably installed inside the straight cylinder. The other end of the return spring is fixedly connected to the inner surface of the straight cylinder. The output end of the spring telescopic rod is fixedly connected to the support plate, and the fixed end of the spring telescopic rod is fixedly connected to a hook. The output end of the spring telescopic rod is slidably connected to the straight cylinder. One end of the long rod is fixedly connected to a gravity block, and the other end of the long rod passes through a rectangular groove in the straight cylinder and is fixedly connected to the conductive ring. The conductive ring is electrically connected to the motor box. The straight column is fixedly installed on the inner surface of the mounting box, and a drive coil is evenly wound on the surface of the straight column. The wear-resistant unit includes a guide ring, a support plate, a front electromagnet, a rear electromagnet, and a cross plate. The guide ring is fixedly installed on the conveyor plate, and the rope is slidably connected to the guide ring. One end of the support plate is fixedly connected to the conveyor plate, and the other end of the support plate is fixedly connected to the front electromagnet. The rear electromagnet is fixedly connected to the conveyor plate, and the front electromagnet is connected to the rear electromagnet through the cross plate.

2. The ship hull lifting device with anti-collision function according to claim 1, characterized in that: The support platform is fixedly mounted on the mounting plate, the upright plate is fixedly mounted on the support platform, one end of the boom is rotatably connected to the upright plate, the other end of the boom is fixedly connected to the conveyor plate, the fixed end of the electric push rod is fixedly connected to the support platform, the output end of the electric push rod is fixedly connected to the middle of the boom, one end of the rope is fixedly connected to the hook, the other end of the rope is evenly wound on the take-up drum, the fixed end of the motor box is fixedly mounted on the support platform, and the output end of the motor box is fixedly connected to the take-up drum.

3. A ship hull lifting device with anti-collision function according to claim 1, characterized in that: The wear-resistant unit also includes a buffer spring, an arc-shaped metal plate, a short rod, a telescopic light shield, a photoresistor, and a light source. One end of the buffer spring is fixedly connected to a horizontal plate, and the other end of the buffer spring is fixedly connected to the arc-shaped metal plate. The arc-shaped metal plate is fixedly connected to a rope. One end of the short rod is fixedly connected to a long rod, and the other end of the short rod is fixedly connected to the telescopic end of the telescopic light shield. The fixed end of the telescopic light shield is fixedly installed on the end of the mounting box away from the ship's deck. The photoresistor is fixedly installed on the inner surface of the end of the mounting box away from the telescopic light shield. The light source is fixedly installed on the inner surface of the end of the mounting box close to the telescopic light shield. The photoresistor is electrically connected to the front electromagnet and the rear electromagnet, and the front and rear electromagnets have opposite polarities.

4. A ship hull lifting device with anti-collision function according to claim 2, characterized in that: The anti-tipping unit includes a hydraulic column, an electric telescopic rod, a slide rail, and a counterweight. One end of the hydraulic column is fixedly mounted on the mounting plate, and the other end of the hydraulic column is fixedly connected to the support platform. The fixed end of the electric telescopic rod is fixedly mounted on the slide rail, and the telescopic end of the electric telescopic rod is fixedly connected to the counterweight. The slide rail is fixedly mounted on the mounting plate, and the counterweight is slidably connected to the slide rail. Pressure sensors are provided at the bottom of both ends of the slide rail.

5. A ship hull lifting device with anti-collision function according to claim 2, characterized in that: The anti-collision unit includes a barrier plate and an airbag. The barrier plate is rotatably mounted on a support platform, and the airbag is fixedly mounted on the side of the barrier plate near the suspended object. The airbag is connected to an external air pump through an air pipe.

6. A ship hull lifting device with anti-collision function according to claim 1, characterized in that: There are two straight columns. In the vertical direction, the current flowing through the drive coil on the surface of the upper column is opposite to the current flowing through the drive coil on the surface of the lower column.

7. A ship hull lifting device with anti-collision function according to claim 2, characterized in that: A controller is installed on the support platform.

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