Steel plate lifting appliance

Abstract

The invention discloses a steel plate lifting appliance which comprises a steel plate lifting appliance body, a plurality of first lifting beams are arranged on the lower surface of the steel plate lifting appliance body, a plurality of second lifting beams are arranged between the first lifting beams, a plurality of short lifting beams are arranged on one sides of the second lifting beams, a plurality of connecting rods are arranged on the lower surfaces of the first lifting beams, and connecting chains are arranged at the lower ends of the connecting rods. A first mounting plate is arranged at the lower ends of every two connecting chains, a controller is arranged on the upper surface of each first mounting plate, a first electromagnetic plate is arranged on the lower surface of each first mounting plate, and under the magnetic action of the first electromagnetic plates and the second electromagnetic plates, the steel plates can be firmly attracted to the surfaces of the first electromagnetic plates and the surfaces of the second electromagnetic plates, and then hoisting of the steel plates can be completed; according to the steel plate lifting appliance, the steel plate lifting appliance main body does not swing greatly when a steel plate is moved, the stability in the lifting process is improved, meanwhile, the accidents such as slipping and unhooking possibly occurring in the clamping process of the clamp are avoided through magnetic lifting, and the safety and the working efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of workshop hoisting equipment technology, and in particular to a steel plate hoisting tool. Background Technology Steel plate lifting devices are specialized tools for lifting steel plates and play a vital role in industrial production. They can be categorized into horizontal and vertical lifting devices based on their lifting method. Horizontal lifting devices feature evenly distributed horizontal lifting; simply open the clamps, securely grip the load, and lift. Remove the device only when the load is on the ground and unloaded. Vertical lifting devices are equipped with self-locking devices for safe and reliable operation. Made of high-quality steel, these devices are compact, lightweight, and easy to install when used with fixed hanging beams. Adjusting the clamping width is quick and convenient, and they are widely used in the automotive, aerospace, and metallurgical industries.

[0002] Steel plate lifting slings are widely used lifting tools, consisting of various components such as clamps, hooks, and wire ropes. They can accommodate the lifting needs of steel plates of different specifications and weights, offering a high safety factor. However, several precautions must be taken when using them. For example, they must be operated by personnel qualified for suspension and installation operations; appropriate clamps must be selected according to the intended use; they must be used within the permissible load and plate thickness range; they must not enter the lifting operation area or the overturning area; avoid striking or impacting the load and lifting sling; prevent the load from moving or stopping abruptly; and for safety, it is best to use at least two clamps. Before use, the jaws, shims, teeth blockage, wear, and other abnormalities must be checked.

[0003] However, common lifting tools use clamps or hooks to lift steel plates. During the clamping process, unexpected situations such as slippage and disengagement may occur. At the same time, the lifting tool will swing significantly when moving the steel plate, which reduces safety. Therefore, this invention provides a steel plate lifting tool. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, a steel plate lifting device is proposed.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: A steel plate lifting device according to the present invention: A steel plate lifting device includes a steel plate lifting device body. A plurality of lifting beams I are arranged on the lower surface of the steel plate lifting device body. A plurality of lifting beams II are arranged between the lifting beams I. A plurality of short lifting beams are arranged on one side of each lifting beam II. A plurality of connecting rods are arranged on the lower surface of the lifting beams I. A connecting chain is arranged at the lower end of each connecting rod. An installation plate I is arranged at the lower end of every two connecting chains. A control mechanism is arranged on the upper surface of the installation plate I. The device has an electromagnetic plate corresponding to the controller on the lower surface of the mounting plate. Through the above design, the steel plate can be firmly attracted to the surface of the electromagnetic plate under the magnetic force of the electromagnetic plate and the electromagnetic plate, thus completing the lifting of the steel plate. This prevents the main body of the steel plate lifting device from swinging significantly when moving the steel plate, improving the stability during lifting. At the same time, magnetic lifting avoids slippage, disengagement and other accidents that may occur during clamping, improving safety and work efficiency.

[0006] Preferably, the lower end of the short lifting beam is provided with a plurality of connecting rods, the lower end of the connecting rods is provided with a connecting chain, the lower end of the connecting rods is provided with a second mounting plate, the lower end of the second mounting plate is provided with a second electromagnetic plate, the upper end of the short lifting beam is provided with an upper connecting rod connected to the connecting rods, and the outer surface of the upper connecting rod is provided with a return spring. Under the action of the return spring, the second mounting plate can provide a buffer when lifting and lowering objects, effectively absorbing and dissipating the instantaneous impact force, greatly reducing the impact and wear on the second mounting plate during the lifting and lowering of objects, extending its service life, ensuring the long-term stable operation of the equipment, reducing maintenance costs and replacement frequency, and improving the overall safety of the operation.

[0007] Preferably, the outermost lifting beam two is equipped with several hydraulic cylinders. One end of each hydraulic cylinder has a telescopic rod inserted inside, and the other end of the telescopic rod has a support rod inserted inside. The lower end of the support rod is provided with a mounting plate. Under the action of the hydraulic cylinders, the telescopic rod can drive the extrusion plate to move towards the lower surface of the steel plate. The extrusion plate will support the steel plate. If a power failure occurs and the magnetic force disappears, the extrusion plate can still firmly support the steel plate, effectively eliminating the risk of the steel plate falling and greatly improving the safety and stability of the entire hoisting process.

[0008] Preferably, one side surface of the receiving rod is provided with a plurality of tooth blocks, and one end of the telescopic rod is rotatably connected with a driven tooth corresponding to the tooth block. The driven tooth meshes with the tooth block, and under the meshing action between the driven tooth and the tooth block, the movement of the receiving rod is limited, making the movement of the receiving rod more stable and improving the stability of the device during operation.

[0009] Preferably, a driven turntable is provided at one end of the driven tooth, and a mounting block is provided on the upper surface of one end of the telescopic rod. A servo motor is installed inside the mounting block, and an active turntable corresponding to the driven turntable is provided at one end of the servo motor. A transmission belt is wound around the outer surface of the driven turntable, and the other end of the transmission belt is wound around the outer surface of the active turntable. Under the action of the servo motor, the active turntable rotates, which in turn causes the transmission belt to drive the driven turntable to rotate. Under the action of the driven turntable, the driven tooth drives the receiving rod to move up and down inside one end of the telescopic rod, so that the extrusion plate can abut against the lower surface of the steel plate, improving its stability in supporting the steel plate.

[0010] Preferably, a magnetic block is installed inside the surface of the extrusion plate. The magnetic attraction of the magnetic block allows the extrusion plate to be better adsorbed onto the lower surface of the steel plate, effectively enhancing the fit and friction between the two. This ensures that the extrusion plate can always maintain close contact with the steel plate, greatly improving the stability of the connection, effectively reducing the risk of safety accidents such as steel plate falling off, and improving safety during operation.

[0011] Preferably, the outer surfaces of both sides of the main body of the steel plate lifting device are provided with a plurality of load-bearing connecting rods. One end of the load-bearing connecting rod is connected to the surface of the lifting beam, thereby improving the load-bearing capacity of the main body of the steel plate lifting device, effectively dispersing pressure, reducing safety hazards such as deformation and shaking caused by insufficient load-bearing capacity, greatly improving the safety and reliability of the lifting process, ensuring the stable operation of the lifting device, and improving the safety during lifting.

[0012] Preferably, a plurality of energy storage devices are provided on one side of the main body of the steel plate lifting device. The energy storage devices are electrically connected to the first electromagnetic plate and the second electromagnetic plate. When the main power supply suddenly fails, the energy storage devices can immediately and seamlessly connect to continuously supply stable and reliable power to the electromagnetic suction device. The magnetic force of the electromagnetic suction device can be firmly maintained in a critical short period of time, avoiding the risk of steel plate falling off due to the loss of magnetic force, and comprehensively improving the safety of lifting operations.

[0013] Preferably, the electromagnetic plate one and the electromagnetic plate two are made of rare earth permanent magnet material, which has excellent magnetic properties. It can maintain strong magnetism after power failure and can still firmly and accurately attract the steel plate even under certain external interference, keeping it in a safe suspension position. This greatly extends the time span for the steel plate to remain in a safe state after power failure, providing a more sufficient emergency response window for dealing with sudden power failures. This effectively improves the safety and reliability of the entire hoisting system, reduces the risk of safety accidents caused by the steel plate falling due to power failure, and improves safety during hoisting.

[0014] Preferably, the upper surface of the steel plate lifting device is provided with lifting plates on both sides, and lifting holes are opened on the surface of the lifting plates. Pressure sensors are installed on the upper inner walls of the lifting holes. A display device is provided on the upper surface of the steel plate lifting device, and the pressure sensors are electrically connected to the display device. During the lifting operation, when the hook comes into contact with the pressure sensor, a specific electrical signal is immediately triggered and quickly and accurately transmitted to the connected display device, clearly indicating that the steel plate is in the lifting state. During this period, the system will always maintain the magnetic attraction to the steel plate to prevent the magnetic attraction from being released due to any unexpected situation. Only when the hook and the pressure sensor are completely separated and the system receives this clear separation signal will it determine that the steel plate has been safely landed, and then automatically release the magnetic attraction to the steel plate. This can effectively prevent the magnetic attraction from being lost unexpectedly due to human error or other unexpected factors during the lifting process, thereby improving the safety and reliability of the lifting operation.

[0015] The beneficial effects of this invention are as follows: 1. Under the magnetic force of electromagnetic plate one and electromagnetic plate two, the steel plate can be firmly adsorbed onto the surface of electromagnetic plate one and electromagnetic plate two, thereby completing the lifting of the steel plate. This prevents the main body of the steel plate lifting device from swinging significantly when moving the steel plate, improving the stability during lifting. At the same time, magnetic lifting avoids unexpected situations such as slippage and disengagement of the clamps during the clamping process, improving safety and work efficiency.

[0016] 2. Under the action of the return spring, the mounting plate two can provide a buffer when lifting and lowering objects, effectively absorbing and dissipating the instantaneous impact force, greatly reducing the impact and wear on the mounting plate two during the lifting and lowering process, extending its service life, ensuring the long-term stable operation of the equipment, reducing maintenance costs and replacement frequency, and improving the overall safety of the operation.

[0017] 3. Under the action of the hydraulic cylinder, the telescopic rod can drive the extrusion plate to move towards the lower surface of the steel plate. The extrusion plate will support the steel plate. If a power failure occurs and the magnetic force disappears, the extrusion plate can still firmly support the steel plate, effectively eliminating the risk of the steel plate falling. This greatly improves the safety and stability of the entire hoisting process and avoids large swings during hoisting. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a front structural diagram of the steel plate lifting device in this invention; Figure 2 In this invention Figure 1 Enlarged view of A in the middle; Figure 3 This is a schematic diagram of the front structure of the electromagnetic plate device in this invention; Figure 4 This is a schematic diagram of the front structure of the steel plate protection device in this invention; Figure 5 This is a front view of the gear device in this invention. Figure 6 This is a schematic diagram of the planar structure of the gear device in this invention.

[0020] Figure 7 This is a schematic diagram of the planar structure of the lifting hole device in this invention.

[0021] Legend: 1. Steel plate lifting device main body; 2. Lifting beam one; 3. Electromagnetic plate one; 4. Connecting rod; 5. Mounting plate one; 6. Connecting chain; 7. Mounting plate two; 8. Electromagnetic plate two; 9. Lifting beam two; 10. Short lifting beam; 11. Upper connecting rod; 12. Return spring; 13. Controller; 14. Hydraulic cylinder; 15. Extrusion plate; 16. Driven turntable; 17. Support rod; 18. Transmission belt; 19. Driven turntable; 20. Mounting block; 21. Telescopic rod; 22. Tooth block; 23. Driven gear; 24. Servo motor; 25. Magnetic block; 26. Pressure sensor; 27. Lifting plate; 28. Lifting hole. Detailed Implementation

[0022] 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.

[0023] Specific implementation examples are given below.

[0024] like Figure 1-7As shown, a steel plate lifting device includes a steel plate lifting device body 1. A plurality of lifting beams 1-2 are arranged on the lower surface of the steel plate lifting device body 1. A plurality of lifting beams 2-9 are arranged between the lifting beams 1-2. A plurality of short lifting beams 10 are arranged on one side of each lifting beam 2-9. A plurality of connecting rods 4 are arranged on the lower surface of the lifting beams 1-2. A connecting chain 6 is arranged at the lower end of each connecting chain 4. A mounting plate 1-5 is arranged at the lower end of every two connecting chains 6. A controller 13 is arranged on the upper surface of the mounting plate 1-5. A control 13 is arranged on the lower surface of the mounting plate 1-5. The electromagnetic plate 13 corresponding to the controller 13, through the above design, allows the steel plate to be firmly adsorbed onto the surface of the electromagnetic plate 13 and electromagnetic plate 28 under the magnetic force of the electromagnetic plate 13 and electromagnetic plate 28, thereby completing the lifting of the steel plate. This prevents the main body 1 of the steel plate lifting device from swinging significantly when moving the steel plate, improving the stability during lifting. At the same time, magnetic lifting avoids accidental situations such as slippage and disengagement that may occur during clamping, improving safety and work efficiency.

[0025] like Figure 1-3 As shown, the lower end of the short lifting beam 10 is provided with several connecting rods 4, the lower end of the connecting rods 4 is provided with connecting chains 6, the lower end of the connecting rods 4 is provided with mounting plate 2 7, the lower end of mounting plate 2 7 is provided with electromagnetic plate 2 8, the upper end of the short lifting beam 10 is provided with an upper connecting rod 11 connected to the connecting rods 4, and the outer surface of the upper connecting rod 11 is provided with a return spring 12. Under the action of the return spring 12, the mounting plate 2 7 can have a buffer when lifting and lowering objects, effectively absorbing and dissipating the instantaneous impact force, greatly reducing the impact and wear on the mounting plate 2 7 during the lifting and lowering of objects, extending its service life, ensuring the long-term stable operation of the equipment, reducing maintenance costs and replacement frequency, and improving the overall safety of the operation.

[0026] like Figure 1-4 As shown, several hydraulic cylinders 14 are installed on the surface of the outermost lifting beam 29. A telescopic rod 21 is inserted into one end of the hydraulic cylinder 14, and a support rod 17 is inserted into one end of the telescopic rod 21. A mounting plate 15 is provided at the lower end of the support rod 17. Under the action of the hydraulic cylinder 14, the telescopic rod 21 can drive the extrusion plate 15 to move towards the lower surface of the steel plate. The extrusion plate 15 will support the steel plate. If a power failure occurs and the magnetic force disappears, the extrusion plate 15 can still firmly support the steel plate, effectively eliminating the risk of the steel plate falling and greatly improving the safety and stability of the entire hoisting process.

[0027] like Figure 2-6As shown, a number of toothed blocks 22 are provided on one side surface of the receiving rod 17. One end of the telescopic rod 21 is rotatably connected to a driven tooth 23 corresponding to the toothed block 22. The driven tooth 23 meshes with the toothed block 22. Under the meshing action between the driven tooth 23 and the toothed block 22, the movement of the receiving rod 17 is limited, making the movement of the receiving rod 17 more stable and improving the stability of the device during operation.

[0028] like Figure 1 and Figure 4-6 As shown, a driven turntable 16 is provided at one end of the driven tooth 23, and a mounting block 20 is provided on the upper surface of one end of the telescopic rod 21. A servo motor 24 is installed inside the mounting block 20. An active turntable 19 corresponding to the driven turntable 16 is provided at one end of the servo motor 24. A transmission belt 18 is wound around the outer surface of the driven turntable 16, and the other end of the transmission belt 18 is wound around the outer surface of the active turntable 19. Under the action of the servo motor 24, the active turntable 19 rotates, which in turn causes the transmission belt 18 to drive the driven turntable 16 to rotate. Under the action of the driven turntable 16, the driven tooth 23 drives the receiving rod 17 to move up and down inside one end of the telescopic rod 21, so that the extrusion plate 15 can abut against the lower surface of the steel plate, improving its stability in supporting the steel plate.

[0029] like Figure 6 As shown, a magnetic block 25 is installed inside the surface of the extrusion plate 15. The magnetic attraction of the magnetic block 25 allows the extrusion plate 15 to be better adsorbed onto the lower surface of the steel plate, effectively enhancing the fit and friction between the two. This ensures that the extrusion plate 15 can always maintain close contact with the steel plate, greatly improving the stability of the connection, effectively reducing the risk of safety accidents such as steel plate falling off, and improving safety during operation.

[0030] like Figure 1 As shown, several load-bearing connecting rods are provided on the outer surfaces of both sides of the steel plate lifting device body 1. One end of the load-bearing connecting rod is connected to the surface of the lifting beam 2, which improves the load-bearing capacity of the steel plate lifting device body 1, effectively disperses pressure, reduces safety hazards such as deformation and shaking caused by insufficient load-bearing capacity, greatly improves the safety and reliability of the lifting process, ensures the stable operation of the lifting device, and improves the safety during lifting.

[0031] like Figure 1 As shown, several energy storage devices are installed on one side of the main body 1 of the steel plate lifting device. The energy storage devices are electrically connected to electromagnetic plate 3 and electromagnetic plate 8. When the main power supply suddenly fails, the energy storage devices can immediately and seamlessly connect to continuously supply stable and reliable power to the electromagnetic suction device. The magnetic force of the electromagnetic suction device can be firmly maintained in a critical short period of time, avoiding the risk of steel plate falling off due to the disappearance of magnetic force, and comprehensively improving the safety of lifting operations.

[0032] like Figure 1-7 As shown, electromagnetic plate 3 and electromagnetic plate 8 are made of rare earth permanent magnet material, which has excellent magnetic properties. After power failure, they can maintain strong magnetism and can still firmly and accurately attract the steel plate even under certain external interference, keeping it in a safe suspension position. This greatly extends the time span for the steel plate to remain in a safe state after power failure, providing a more sufficient emergency response window for dealing with sudden power failures. This effectively improves the safety and reliability of the entire hoisting system, reduces the risk of safety accidents caused by the steel plate falling due to power failure, and improves safety during hoisting.

[0033] like Figure 1 and Figure 7 As shown, the upper surface of the steel plate lifting device 1 is provided with lifting plates 27 on both sides. Lifting holes 28 are formed on the surface of the lifting plates 27, and pressure sensors 26 are installed on the upper inner walls of the lifting holes 28. A display device is provided on the upper surface of the steel plate lifting device 1. The pressure sensors 26 are electrically connected to the display device. During the lifting operation, when the hook contacts the pressure sensor 26, a specific electrical signal is immediately triggered and quickly and accurately transmitted to the connected display device, clearly indicating that the steel plate is in the lifting state. During this period, the system maintains the magnetic attraction to the steel plate to prevent the magnetic attraction from being released due to any unexpected circumstances. Only when the hook and pressure sensor 26 are completely separated, and the system receives this clear separation signal, will it determine that the steel plate has safely landed and automatically release the magnetic attraction to the steel plate. This effectively prevents the magnetic attraction from unexpectedly disappearing due to human error or other unforeseen factors during the lifting process, thereby improving the safety and reliability of the lifting operation.

[0034] Working principle: During the hoisting operation, the main body 1 of the steel plate lifting device moves downwards and approaches the steel plate, causing the electromagnetic plate 3 and electromagnetic plate 8 to come into contact with the steel plate. This generates magnetic force on the electromagnetic plates 3 and 8, which magnetically attracts the steel plate, allowing it to be lifted. Simultaneously, the servo motor 24 rotates the active turntable 19, which in turn causes the transmission belt 18 to drive the driven turntable 16 to rotate. Under the action of the driven turntable 16, the driven gear 23 drives the receiving rod 17 to move up and down inside one end of the telescopic rod 21, moving the pressing plate 15 below the steel plate. When adjusted to the appropriate position, the telescopic rod 21 moves the pressing plate 15 towards the front of the steel plate. The device moves downwards, and then, through the action of the servo motor 24, drives the extrusion plate 15 upwards, so that the lower surfaces of the steel plates come into contact. At the same time, the magnetic attraction of the magnetic block 25 allows the extrusion plate 15 to be attracted to the lower surface of the steel plate, supporting the steel plate. Then, the steel plate is lifted by the main body 1 of the steel plate lifting device. When it moves to the designated position, under the action of the telescopic rod 21, the support of the extrusion plate 15 on the steel plate is released. Under the action of the servo motor 24, the extrusion plate 15 can then be placed on the ground. When the hook and the pressure sensor 26 are completely separated, the system will determine that the steel plate has been safely landed after receiving this clear separation signal, and then automatically release the magnetic attraction on the steel plate, completing the lifting of the steel plate.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate hanger, comprising a steel plate hanger body (1), characterized in that: The lower surface of the steel plate hanger body (1) is provided with a plurality of suspension beams (2), a plurality of suspension beams (9) are provided between the suspension beams (2), a plurality of short suspension beams (10) are provided on one side of the suspension beams (9), a plurality of connecting rods (4) are provided on the lower surface of the suspension beams (2), a connecting chain (6) is provided at the lower end of the connecting rods (4), a mounting plate (5) is provided at the lower end of every two connecting chains (6), a controller (13) is provided on the upper surface of the mounting plate (5), and an electromagnetic plate (3) corresponding to the controller (13) is provided on the lower surface of the mounting plate (5).

2. A steel plate hanger according to claim 1, characterized in that: A plurality of connecting rods (4) are arranged at the lower end of the short suspension beam (10), the connecting chain (6) is arranged at the lower end of the connecting rod (4), a second mounting plate (7) is arranged at the lower end of the connecting rod (4), and a second electromagnetic plate (8) is arranged at the lower end of the second mounting plate (7). An upper connecting rod (11) is arranged at the upper end of the short suspension beam (10) and is connected to the connecting rod (4), and a return spring (12) is arranged on the outer surface of the upper connecting rod (11).

3. A steel plate hanger according to claim 1, characterized in that: A plurality of hydraulic cylinders (14) are installed on the surface of the outermost suspension beam No. 2 (9), a telescopic rod (21) is inserted into one end of the hydraulic cylinder (14), a receiving rod (17) is inserted into one end of the telescopic rod (21), and a mounting plate No. 1 (5) is provided at the lower end of the receiving rod (17).

4. A steel plate hanger according to claim 3, characterized in that: A plurality of tooth blocks (22) are provided on one side surface of the receiving rod (17), and a driven tooth (23) corresponding to the tooth block (22) is rotatably connected inside one end of the telescopic rod (21), and the driven tooth (23) is meshed with the tooth block (22).

5. A steel plate hanger according to claim 4, characterized in that: A driven rotating disk (16) is arranged at one end of the driven tooth (23); a mounting block (20) is arranged on the upper surface of one end of the telescopic rod (21); a servo motor (24) is mounted inside the mounting block (20); a driving rotating disk (19) corresponding to the driven rotating disk (16) is arranged at one end of the servo motor (24); a transmission belt (18) is wound around the outer surface of the driven rotating disk (16); and the other end of the transmission belt (18) is wound around the outer surface of the driving rotating disk (19).

6. A steel plate hanger according to claim 1, characterized in that: A magnetic attraction block (25) is installed inside the surface of the extrusion plate (15).

7. A steel plate hanger according to claim 1, characterized in that: A plurality of load-bearing connecting rods are provided on the outer surfaces of both sides of the steel plate hanger body (1), and one end of the load-bearing connecting rod is connected to the surface of the first hanging beam (2).

8. The steel plate hanger according to claim 1, characterized in that: A plurality of energy storage devices are provided on one side of the steel plate hanger body (1), and the energy storage devices are electrically connected to the electromagnetic plate 1 (3) and the electromagnetic plate 2 (8).

9. The steel plate hanger according to claim 1, characterized in that: The electromagnetic plate 1 (3) and the electromagnetic plate 2 (8) are made of rare earth permanent magnet material.

10. The steel plate hanger according to claim 1, characterized in that: Hanging plates (27) are arranged on both sides of the upper surface of the steel plate hanger body (1), and hanging holes (28) are opened on the surface of the hanging plates (27). Pressure sensors (26) are installed on the upper inner walls of the hanging holes (28). A display device is arranged on the upper surface of the steel plate hanger body (1), and the pressure sensor (26) is electrically connected to the display device.

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