Intelligent conveying and hoisting device for ship longitudinal

Abstract

This invention relates to the field of hoisting equipment technology, specifically disclosing an intelligent conveying and hoisting device for ship longitudinal beams, comprising: a support frame, a movable frame mounted on top of the support frame, and a motor mounted on one end of the movable frame near the support frame to drive the movable frame to rotate; a connecting frame mounted on the end of the movable frame away from the support frame, and material mounted below the connecting frame; and a conveying assembly mounted on the surface of the material, comprising a monitoring plate, a rotating wheel, a base plate, a pressure sensor, and a second motor. The pressure sensor is mounted on the bottom of the material. The material is gripped by two sets of monitoring plates, and the pressure on both sides of the material is monitored by two sets of pressure sensors. The pressure sensors on both base plates monitor the force state of the material in real time. Once a shift in the center of gravity is detected, the rotating wheel is immediately driven to make a lateral fine adjustment, so that the material automatically returns to the center, fundamentally solving the problems of swaying and tilting caused by an unstable center of gravity, and ensuring that the hoisting process is stable and controllable.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, specifically to an intelligent conveying and hoisting device for ship longitudinal beams. Background Technology

[0002] In the shipbuilding process, longitudinal skeletons are an important part of the hull structure. They are usually long and heavy metal components. Their handling and hoisting operations are frequent and have high stability requirements. At present, the industry generally uses mechanical clamps or electromagnetic lifting devices to transport and position longitudinal skeletons. These devices can meet basic hoisting needs to a certain extent, and have good operability and reliability, especially under regular working conditions.

[0003] However, as shipbuilding moves towards larger, more precise, and more intelligent designs, traditional lifting methods are increasingly showing limitations in handling complex conditions such as center of gravity shifts, weight changes, and adaptive clamping. For example, when the center of gravity of a longitudinal girder deviates from its geometric center due to machining errors, stacking deformation, or surface deposits, if the clamps cannot sense and adjust the force in real time, there is a risk of swaying, tilting, or even slippage during lifting. Furthermore, the weight differences between longitudinal girder specifications are significant; if the clamping force and lifting speed cannot be dynamically matched, it not only affects operational efficiency but may also cause potential damage to equipment or workpieces. In practice, multiple trial lifts and fine-tuning adjustments are often required by manual intervention to ensure the lifting point is centered. This process is not only time-consuming but also demands a high level of experience from the operators.

[0004] Therefore, how to achieve automatic center of gravity identification, dynamic balance adjustment, weight adaptive control, and efficient and precise clamping of longitudinal skeleton materials while ensuring safety has become a technical direction that urgently needs to be optimized to improve the automation level of ship assembly. Although existing technologies have basic lifting functions, there is still room for further integration and improvement in terms of intelligent sensing, closed-loop feedback, and multi-actuator collaborative control. To this end, we propose an intelligent conveying and lifting device for ship longitudinal skeletons. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent conveying and hoisting device for ship longitudinals, in order to solve the problems mentioned in the background art. Existing ship longitudinal hoisting devices lack real-time sensing and adaptive adjustment capabilities when dealing with working conditions such as center of gravity shift and weight changes. They often rely on repeated manual adjustments to ensure hoisting stability, which is not only inefficient but also difficult to meet the requirements of high precision, high safety and intelligent operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent conveying and hoisting device for ship longitudinals, comprising: a support frame, a movable frame provided on the top of the support frame, and a motor provided at one end of the movable frame near the support frame, the movable frame being driven to rotate by the motor, a connecting frame provided at one end of the movable frame away from the support frame, and material provided below the connecting frame; The conveying assembly is set on the surface of the material. The conveying assembly includes a monitoring plate, a rotating wheel, a base plate, a pressure sensor, and a second motor. The pressure sensor is set at the bottom of the material. The material is clamped by two sets of monitoring plates, and the pressure on both sides of the material is monitored by two sets of pressure sensors. When the pressure on one set of pressure sensors is greater than the pressure on the other set of pressure sensors, the second motor drives the rotating wheel to rotate, assisting the material to move laterally until the center of gravity of the material is stable. The display component is located between two monitoring plates. The display component includes a gravity display disk, a rotating needle, a cam, a moving plate, a slider one, a sliding resistance bar one, a sliding resistance bar two, and a slider two. A sliding resistance bar three is provided on the side of the sliding resistance bar two, and a slider three is slidably connected to the surface of the sliding resistance bar three. The weight of the material is displayed through the gravity display disk. At the same time, the rotating needle drives the cam to rotate, which pushes the moving plate to move. The movement of the moving plate drives the slider one and slider two to move synchronously, changing the resistance values ​​of the sliding resistance bars one, two, and three. When the detected material weight is large, the resistance value of the sliding resistance bar one increases, reducing the working speed of the motor one. The clamping assembly is positioned between the connecting frame and the material. The clamping assembly includes a screw, a motor, a moving frame, clamping plates, and an electromagnet. The material is clamped by two sets of clamping plates and attracted by the electromagnet. When the display component detects that the weight of the material exceeds a threshold, the resistance of the sliding resistor bar decreases, causing the motor to work faster, thereby increasing the moving distance of the moving frame. At the same time, the resistance of the sliding resistor bar decreases, increasing the electromagnetic attraction force of the electromagnet.

[0007] The monitoring board has a sliding plate fixed to its top, which is inserted inside the top plate. The top plate has a sliding opening that mates with the sliding plate.

[0008] The rotating wheel is housed in a storage cavity inside the monitoring plate. A rotating rod is fixed at the center of the rotating wheel and is rotatably connected to the monitoring plate. The top of the rotating rod on one side is fixedly connected to the output shaft of motor two, and the outer wall of motor two is fixedly connected to the top of the monitoring plate.

[0009] The monitoring plate has a base plate fixed to its side, and the base plate is set at the bottom of the material. The side of the base plate closest to the material is arc-shaped. The pressure sensor is set at the top of one side of the base plate, and a rotating ball is embedded in the top of the other side of the base plate.

[0010] Among them, a motor three is installed on one side of the top of the top plate, and a support frame one is fixed to the outer wall of the motor three. The bottom of the support frame one is fixed to the surface of the top plate, and screws one are fixed to both ends of the output shaft of the motor three, and screws one are threadedly connected to the slide plate.

[0011] Among them, a second support frame is fixed on the other side of the top plate, and a limit rod is fixed on the top of the second support frame. The limit rod passes through the slide plate, and two sets of adjacent slide plates are fixedly connected by a connecting plate.

[0012] The gravity display disk has a rotating needle at its center, and a pointer rod is fixed to the front end of the outer wall of the rotating needle. A cam is fixed to the middle end of the outer wall of the rotating needle, and the cam presses against a moving plate. One side of the moving plate is slidably connected to the inner wall of the gravity display disk through a slider. The inside of the gravity display disk has a groove that cooperates with the slider.

[0013] The other side of the movable plate is fixed to the slider one. The slider one is slidably connected to the outer wall of the sliding resistor strip one. The end of the slider one away from the movable plate is connected to the slider two through the connecting plate two. The slider two is slidably connected to the outer wall of the sliding resistor strip two. Both ends of the sliding resistor strip one and the sliding resistor strip two are fixed to the inner wall of the gravity display disk.

[0014] Among them, motor four is set inside the connecting frame, and screw two is fixed on the output shafts on both sides of motor four. The outer wall of screw two is threadedly connected to a movable frame. The end of screw two away from motor four is fixedly connected to support frame three. Support frame three is fixed on the side of the connecting frame. The top of the clamping plate is slidably connected to the movable frame. Electromagnet is fixed on the inner wall of clamping plate.

[0015] The clamping plate has a screw three internally threaded connection, with one end of the screw three rotatably connected to the inner wall of the moving frame, and the other end of the screw three fixedly connected to the output shaft of the motor five. The outer wall of the motor five is fixed to the moving frame.

[0016] The present invention has at least the following beneficial effects: 1. By integrating four core functions—pressure sensing, center of gravity self-adjustment, weight feedback, and adaptive clamping—this device significantly improves the safety, stability, and automation level of lifting heavy sheet metal materials. Traditional lifting tools often use fixed clamping distances and constant clamping forces, which are difficult to handle working conditions with different weights or center of gravity shifts, easily leading to material slippage, deformation, or even safety accidents. This device, however, monitors the material's stress state in real time through pressure sensors on both side base plates. Once a center of gravity shift is detected, it immediately drives the rotating wheels to make lateral fine adjustments, automatically centering the material. This fundamentally solves problems such as swaying and tilting caused by an unstable center of gravity, ensuring stable and controllable lifting throughout the entire process.

[0017] 2. More importantly, this automatic leveling mechanism completely eliminates the inefficient operation mode of traditional hoisting that relies on manual visual judgment, repeated trial lifting, and manual pushing. In conventional operations, operators often need to lift, observe, lower, and adjust multiple times, which is time-consuming and difficult to guarantee accuracy. Especially for ship longitudinal beams that are tens of meters long, even a slight deviation in the center of gravity can cause significant end swaying, further prolonging the centering time. This device can complete the center of gravity identification and dynamic correction within seconds after clamping, greatly shortening non-productive downtime and significantly improving the hoisting cycle and production line efficiency. At the same time, since the leveling process is fully automated and standardized, it avoids operational fluctuations caused by differences in human experience, which not only improves the consistency of operations but also provides a prerequisite for high repeatability positioning accuracy for subsequent welding, assembly, and other processes, thus promoting the shipbuilding industry towards high efficiency and intelligence.

[0018] 3. Furthermore, this device innovatively introduces a mechanical-electrical linkage weight self-recognition and response mechanism. The weight of the material is converted into cam displacement through the gravity display panel, which then synchronously adjusts the resistance values ​​of three sets of sliding resistors to achieve intelligent control of motor one, motor four, and electromagnets. When the material is heavy, the system automatically reduces the rotation speed of the movable frame to slow down the lifting rhythm, while increasing the clamping plate spacing and enhancing the electromagnetic adsorption force, forming multiple safety guarantees of "slow speed + wide distance + strong clamping". When the material is light, the clamping action is completed quickly to improve work efficiency. This dynamic matching strategy not only optimizes energy consumption but also greatly expands the equipment's versatility for longitudinal ribs of different specifications, effectively avoiding the waste of resources such as "using a small horse to pull a large cart" or "using large materials for small purposes".

[0019] 4. In addition, the gripping assembly adopts a dual-mode gripping structure (mechanical clamping plate + electromagnetic adsorption) and a three-level drive system (motor four controls the clamping distance, motor five adjusts the clamping plate fit, and electromagnet provides auxiliary attraction), which realizes all-round and highly reliable gripping of materials. Especially for the flat surface and magnetically conductive ship longitudinal ribs, the addition of electromagnets greatly enhances the anti-slip capability. The cooperation between screw three and motor five allows the clamping plate to adaptively fit the edges of plates of different thicknesses or slight warping, avoiding damage caused by local stress concentration. This flexible gripping concept takes into account both clamping force and protection, which is significantly better than rigid clamps and is particularly suitable for handling high-precision and high-value ship hull components.

[0020] 5. Finally, the device's structural design fully considers safety protection at the operating boundaries and intelligent operation. By installing travel limit sensors on the outside of the moving frame, the relative position of the clamping plate and the material edge is monitored in real time. Once the preset limit is reached, the drive signal is immediately cut off, effectively preventing the clamp from overtravel collisions or running without load. This protects the equipment body and avoids accidental scratches to the material. The entire device can complete the entire process of "identification-leveling-clamping-lifting" without manual intervention, significantly reducing the labor intensity and risk of misoperation for operators. It provides a practical and feasible technical path for the intelligent upgrading of shipbuilding workshops and has significant engineering application value and industrialization prospects. Attached Figure Description

[0021] Figure 1 This is a first three-dimensional schematic diagram of the present invention; Figure 2 This is a second three-dimensional schematic diagram of the present invention; Figure 3 This is a partial structural schematic diagram of the conveying component of the present invention; Figure 4 This is a partial structural schematic diagram of the monitoring board of the present invention; Figure 5 This is a partial structural diagram of the materials and display components of the present invention; Figure 6 This is a partial structural schematic diagram of the clamping component of the present invention; Figure 7 This is a partial structural cross-sectional view of the display component of the present invention; Figure 8 This is a partial structural diagram of the travel limit sensor of the present invention.

[0022] In the diagram: 11. Support frame; 12. Movable frame; 13. Motor 1; 14. Connecting frame; 15. Material; 2. Conveying assembly; 21. Top plate; 22. Slide plate; 23. Monitoring plate; 24. Rotary wheel; 25. Rotating rod; 26. Base plate; 27. Pressure sensor; 28. Motor 2; 29. ​​Connecting plate 1; 31. Screw 1; 32. Motor 3; 33. Support frame 1; 34. Limiting rod; 35. Support frame 2; 36. Rotating ball; 4. Display assembly; 41. Gravity display panel; 42. 43. Rotating needle; 44. Cam; 45. Moving plate; 46. Sliding plate one; 47. Sliding resistor bar one; 48. Connecting plate two; 49. Sliding resistor bar two; 5. Sliding plate two; 5. Clamping assembly; 51. Support frame three; 52. Screw two; 53. Motor four; 54. Moving frame; 55. Clamping plate; 56. Electromagnet; 57. Screw three; 58. Motor five; 61. Sliding plate three; 62. Sliding resistor bar three; 63. Slider; 64. Slide groove; 7. Fixing plate; 8. Travel limit sensor. Detailed Implementation

[0023] 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.

[0024] Example 1 Please see Figures 1 to 8 The present invention provides a technical solution: an intelligent conveying and hoisting device for ship longitudinal skeleton, including a support 11, a movable frame 12 is provided on the top of the support 11, and a motor 13 is provided at one end of the movable frame 12 near the support 11, which drives the movable frame 12 to rotate. A connecting frame 14 is provided at one end of the movable frame 12 away from the support 11, and material 15 is provided below the connecting frame 14. Conveying assembly 2 is disposed on the surface of material 15. Conveying assembly 2 includes monitoring plate 23, rotating wheel 24, base plate 26, pressure sensor 27 and motor 28. Pressure sensor 27 is disposed at the bottom of material 15. Material 15 is clamped by two sets of monitoring plates 23 and pressure on both sides of material 15 is monitored by two sets of pressure sensors 27 respectively. When the pressure on one set of pressure sensors 27 is greater than the pressure on the other set of pressure sensors 27, the rotating wheel 24 is driven to rotate by motor 28 to assist the material 15 to move laterally until the center of gravity of material 15 is stable. Display component 4 is located between two monitoring plates 23. Display component 4 includes a gravity display disk 41, a rotating needle 42, a cam 43, a moving plate 44, a slider 45, a sliding resistor bar 46, a sliding resistor bar 48, and a slider 49. A sliding resistor bar 62 is provided on the side of the sliding resistor bar 48, and a slider 61 is slidably connected to the surface of the sliding resistor bar 62. The weight of the material 15 is displayed through the gravity display disk 41. At the same time, the rotating needle 42 drives the cam 43 to rotate, and the cam 43 pushes the moving plate 44 to move. The movement of the moving plate 44 drives the slider 45 and the slider 49 to move synchronously, changing the resistance values ​​of the sliding resistor bars 46, 48, and 62. When the weight of the material 15 is large, the resistance value of the sliding resistor bar 46 increases, reducing the working speed of the motor 13. The clamping assembly 5 is disposed between the connecting frame 14 and the material 15. The clamping assembly 5 includes a screw 52, ​​a motor 53, a moving frame 54, clamping plates 55, and an electromagnet 56. The material 15 is clamped by the two clamping plates 55 and the material 15 is attracted by the electromagnet 56. When the display component 4 detects that the weight of the material 15 exceeds the threshold, the resistance of the sliding resistor bar 48 decreases, which increases the working speed of the motor 53, thereby increasing the moving distance of the moving frame 54. At the same time, the resistance of the sliding resistor bar 62 decreases, which increases the electromagnetic attraction force of the electromagnet 56.

[0025] A sliding plate 22 is fixed to the top of the monitoring plate 23, and the sliding plate 22 is inserted into the inside of the top plate 21. The inside of the top plate 21 is provided with a sliding opening that cooperates with the sliding plate 22.

[0026] The rotating wheel 24 is installed in the storage cavity inside the monitoring plate 23. A rotating rod 25 is fixed at the center of the rotating wheel 24 and is rotatably connected to the monitoring plate 23. The top of the rotating rod 25 on one side is fixedly connected to the output shaft of the second motor 28. The outer wall of the second motor 28 is fixedly connected to the top of the monitoring plate 23.

[0027] A base plate 26 is fixed to the side of the monitoring plate 23, and the base plate 26 is set at the bottom of the material 15. The side of the base plate 26 closest to the material 15 is set as arc-shaped. The pressure sensor 27 is set on the top of the base plate 26 on one side, and a rotating ball 36 is embedded in the top of the base plate 26 on the other side.

[0028] A motor 32 is provided on one side of the top of the top plate 21, and a support frame 33 is fixed to the outer wall of the motor 32. The bottom of the support frame 33 is fixed to the surface of the top plate 21. Screws 31 are fixed to both ends of the output shaft of the motor 32, and the screws 31 are threadedly connected to the slide plate 22.

[0029] A support frame 25 is fixed on the other side of the top plate 21, and a limit rod 34 is fixed on the top of the support frame 25. The limit rod 34 passes through the slide plate 22, and two sets of adjacent slide plates 22 are fixedly connected by a connecting plate 1 29.

[0030] A rotating needle 42 is provided at the center of the gravity display disk 41, and a pointer rod is fixed at the front end of the outer wall of the rotating needle 42. A cam 43 is fixed at the middle end of the outer wall of the rotating needle 42, and the cam 43 presses against the moving plate 44. One side of the moving plate 44 is slidably connected to the inner wall of the gravity display disk 41 through a slider 63. A groove 64 that cooperates with the slider 63 is provided inside the gravity display disk 41.

[0031] The other side of the movable plate 44 is fixed to the slider 45. The slider 45 is slidably connected to the outer wall of the sliding resistor bar 46. The end of the slider 45 away from the movable plate 44 is connected to the slider 49 through the connecting plate 47. The slider 49 is slidably connected to the outer wall of the sliding resistor bar 48. Both ends of the sliding resistor bar 46 and the sliding resistor bar 48 are fixed to the inner wall of the gravity display disk 41.

[0032] First, motor 13 operates, moving the two sets of monitoring plates 23 to both sides of the material 15. Motor 32 operates, driving screw 31 to rotate, causing the two sets of monitoring plates 23 to move closer to the material 15. Under external drive, the two sets of monitoring plates 23 of the conveying assembly 2 move inward from both sides, clamping the material 15. The weight of the material 15 then acts on the two sets of base plates 26 below it. The pressure sensor 27 on one side of the base plate 26 directly measures the pressure, while the pressure on the other side is transmitted through the ball bearing 36. When the center of gravity of the material 15 shifts, the pressure sensors 27 on both sides will detect the unbalanced pressure signal code. Once the system identifies that the pressure on one side is too high, it will start motor 28, whose output shaft directly drives the rotating rod 25 and the rotating wheel 24 to rotate. Using the friction between the rotating wheel 24 and the surface of the material 15, the material 15 is driven to make lateral fine adjustments until the pressure on both sides is restored to balance, ensuring the stability of the hoisting center of gravity.

[0033] The total weight information of material 15 is visualized and fed back electrically through display component 4. The gravity of material 15 causes the rotating needle 42 inside the gravity display disk 41 to deflect, and the pointer rod at the front end of the rotating needle 42 indicates the specific weight on the disk. At the same time, the cam 43 fixed in the middle of the rotating needle 42 also rotates synchronously. Its contour pushes the moving plate 44 in contact with it to move linearly along the slide groove 64. The upward movement of the moving plate 44 will link the sliding plate 45 and the sliding plate 49 connected by the connecting plate 47, so that they slide synchronously on the sliding resistance bar 46 and the sliding resistance bar 48 respectively, thereby changing the resistance value of each resistance bar. When the weight of material 15 is large, the resistance value of the sliding resistance bar 46 increases, sending a speed reduction signal to the motor 13 to slow down the rotation speed of the movable frame 12, so as to ensure the safety of hoisting heavy material 15.

[0034] The clamping force of the device is not fixed, but can be intelligently adjusted according to the weight of the material 15. When the display component 4 detects that the weight of the material 15 exceeds the preset threshold, the moving plate 44 driven by the cam 43 will move further, causing the resistance values ​​of the sliding resistor bar 48 and the sliding resistor bar 62 to decrease. The decrease in the resistance value of the sliding resistor bar 48 will send an acceleration signal to the motor 53 in the clamping component 5, causing it to drive the screw 52 to rotate faster, thereby driving the moving frame 54 connected to it to move a greater distance, so that the clamping plate 55 applies a greater mechanical clamping force to the material 15. At the same time, the decrease in the resistance value of the sliding resistor bar 62 will increase the current supplied to the electromagnet 56, thereby increasing its electromagnetic attraction force, forming a dual guarantee of mechanical clamping and magnetic attraction, effectively preventing the heavy material 15 from slipping during hoisting.

[0035] Example 2 Motor 4 53 is installed inside the connecting frame 14. The output shafts on both sides of motor 4 53 are fixed with screw 2 52, and the outer wall of screw 2 52 is threadedly connected to the movable frame 54. The end of screw 2 52 away from motor 4 53 is fixedly connected to support frame 3 51. Support frame 3 51 is fixed to the side of connecting frame 14. The top of clamping plate 55 is slidably connected to movable frame 54. Electromagnet 56 is fixed to the inner wall of clamping plate 55.

[0036] The clamping plate 55 is internally threaded with a screw 3 57, one end of which is rotatably connected to the inner wall of the movable frame 54, and the other end of which is fixedly connected to the output shaft of the motor 58. The outer wall of the motor 58 is fixed to the movable frame 54.

[0037] A fixed plate 7 is fixed on the side of the movable frame 54 away from the motor 4 53, and a travel limit sensor 8 is fixed at the bottom of the fixed plate 7. The travel limit sensor 8 monitors the edge of the material 15. When the travel limit sensor 8 detects that the material 15 is at the edge, the motor 4 53 is controlled to stop working to ensure that the fixture runs within the preset travel range and prevent the fixture from exceeding the travel limit.

[0038] Its core driving source is motor 4 53 located inside the connecting frame 14. When motor 4 53 starts, its output shafts on both sides will synchronously drive the two screws 2 52 to rotate. Since one end of screw 2 52 is fixed to support frame 3 51 and cannot move axially, the rotating screw 2 52 will drive the moving frame 54 connected to it to move in a straight line along the screw. The heavier the material 15, the farther the moving frame 54 moves, and the larger the distance between the two clamping plates 55, which is convenient for clamping heavy materials 15. Motor 5 58 drives screw 3 57 to rotate. Since screw 3 57 is threadedly connected to clamping plate 55 and one end of it rotates inside the moving frame 54, the rotation of screw 3 57 will precisely push or pull clamping plate 55 to slide on the moving frame 54, realizing adaptive fitting and precise clamping of materials 15 of different sizes or shapes.

Claims

1. An intelligent conveying and hoisting device for ship longitudinal beams, comprising: The support has a movable frame at its top, and a motor is installed at one end of the movable frame near the support. The motor drives the movable frame to rotate. A connecting frame is installed at the end of the movable frame away from the support, and materials are placed below the connecting frame. Its characteristic is that it also includes: A conveying assembly is disposed on the surface of the material. The conveying assembly includes a monitoring plate, a rotating wheel, a base plate, a pressure sensor, and a second motor. The pressure sensor is disposed at the bottom of the material. The material is clamped by two sets of monitoring plates, and the pressure on both sides of the material is monitored by two sets of pressure sensors. When the pressure on one set of pressure sensors is greater than the pressure on the other set of pressure sensors, the second motor drives the rotating wheel to rotate, assisting the material to move laterally until the center of gravity of the material is stable. The display component is located between two monitoring plates. It includes a gravity display disk, a rotating needle, a cam, a moving plate, a slider, a sliding resistor strip, a sliding resistor strip, and a slider. A third sliding resistor strip is located on the side of the second sliding resistor strip, and a slider is slidably connected to the surface of the third sliding resistor strip. The gravity display disk displays the weight of the material. Simultaneously, the rotating needle drives the cam to rotate, which in turn pushes the moving plate to move. The movement of the moving plate causes sliders one and two to move synchronously, changing the resistance values ​​of the three sliding resistor strips. When the detected material weight is large, the resistance value of the first sliding resistor strip increases, reducing the operating speed of the first motor. A clamping assembly is disposed between the connecting frame and the material. The clamping assembly includes a screw, a motor, a moving frame, clamping plates, and an electromagnet. The material is clamped by two sets of clamping plates and attracted by the electromagnet. When the display component detects that the weight of the material exceeds a threshold, the resistance of the sliding resistor bar decreases, causing the motor to work faster, thereby increasing the moving distance of the moving frame. At the same time, the resistance of the sliding resistor bar decreases, increasing the electromagnetic attraction force of the electromagnet.

2. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The top of the monitoring plate is fixed with a sliding plate, which is inserted into the inside of the top plate. The inside of the top plate has a sliding opening that cooperates with the sliding plate.

3. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The rotating wheel is housed in a storage cavity inside the monitoring plate. A rotating rod is fixed at the center of the rotating wheel and is rotatably connected to the monitoring plate. The top of the rotating rod on one side is fixedly connected to the output shaft of the second motor, and the outer wall of the second motor is fixedly connected to the top of the monitoring plate.

4. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The monitoring plate has a base plate fixed to its side, and the base plate is set at the bottom of the material. The side of the base plate closest to the material is set in an arc shape. The pressure sensor is set on the top of one side of the base plate, and a rotating ball is embedded in the top of the other side of the base plate.

5. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 2, characterized in that: A motor three is installed on one side of the top of the top plate, and a support frame one is fixed to the outer wall of the motor three. The bottom of the support frame one is fixed to the surface of the top plate, and screws one are fixed to both ends of the output shaft of the motor three, and screws one are threadedly connected to the slide plate.

6. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 2, characterized in that: A second support frame is fixed on the other side of the top of the top plate, and a limit rod is fixed on the top of the second support frame. The limit rod passes through the slide plate, and two sets of adjacent slide plates are fixedly connected by a connecting plate.

7. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: A rotating needle is located at the center of the gravity display disk, and a pointer rod is fixed to the front end of the outer wall of the rotating needle. A cam is fixed to the middle end of the outer wall of the rotating needle, and the cam presses against a moving plate. One side of the moving plate is slidably connected to the inner wall of the gravity display disk through a slider. A groove that cooperates with the slider is opened inside the gravity display disk.

8. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The other side of the movable plate is fixed to the slider one. The slider one is slidably connected to the outer wall of the sliding resistor strip one. The end of the slider one away from the movable plate is connected to the slider two through the connecting plate two. The slider two is slidably connected to the outer wall of the sliding resistor strip two. Both ends of the sliding resistor strip one and the sliding resistor strip two are fixed to the inner wall of the gravity display disk.

9. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The motor four is installed inside the connecting frame. The output shafts on both sides of the motor four are fixed with screw two, and the outer wall of the screw two is threaded with a movable frame. The end of the screw two away from the motor four is fixedly connected to the support frame three. The support frame three is fixed on the side of the connecting frame. The top of the clamping plate is slidably connected to the movable frame. The electromagnet is fixed on the inner wall of the clamping plate.

10. The intelligent conveying and hoisting device for ship longitudinal beams according to claim 1, characterized in that: The clamping plate is internally threaded with a screw three, one end of which is rotatably connected to the inner wall of the movable frame, and the other end of which is fixedly connected to the output shaft of the motor five. The outer wall of the motor five is fixed to the movable frame.

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