Crane for 3800mm thick plate production line

Abstract

The present invention belongs to the technical field of lifting equipment, and discloses a crane for a 3800mm wide and thick plate production line, comprising a bridge frame and a sliding trolley. The sliding trolley is internally connected with an electric hoist, the electric hoist is connected with a lifting cable arranged below the sliding trolley, the lower end of the lifting cable is fixedly connected with a lifting lock buckle, the lower end of the lifting lock buckle is fixedly connected with two symmetrically distributed lifting cables, a lifting plate frame fixedly connected to the lifting cable is arranged below the lifting cable, the lower end of the lifting plate frame is slidably connected with two symmetrically distributed lifting adsorption mechanisms, the lifting adsorption mechanism comprises a sliding sleeve rod slidably connected to the lifting plate frame, two symmetrically distributed lifting rods are slidably connected inside the sliding sleeve rod, the two lifting rods slide in opposite directions and at equal distances inside the sliding sleeve rod, the lower ends of the lifting rods are fixedly connected with lifting cables, the other ends of the lifting cables are fixedly connected with fixed blocks, the fixed blocks are fixedly connected with lifting electromagnets, and the practicability is strong.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a crane for a 3800mm wide and thick plate production line. Background Art

[0002] 3800mm wide and thick plates are often used in the shipbuilding industry. Due to the large volume and weight of 3800mm wide and thick plates, they need to be hoisted and transported during further processing in the workshop production line, which requires special equipment for hoisting.

[0003] The Chinese patent with application number CN202010513064.7 discloses a composite lifting device for steel plate lifting by an intelligent crane. The composite lifting device for steel plate lifting by an intelligent crane can be used for lifting steel plates in unmanned steel plate stereoscopic warehouses. When used with an intelligent crane, it can realize unmanned intelligent lifting of steel plates of different widths, whole bundles, or single sheets without changing the lifting device.

[0004] The Chinese patent application number CN201811514698.3 discloses a lifting device that can smoothly move steel plates. In this application, the lifting beam moves with the crane through the grab arm of the crane. When the crane stops, the steel plate will swing due to inertia, and the iron chain and connecting rod connected to the steel plate will also swing in the same way. When the connecting rod swings, it will hit the arc-shaped baffles on both sides of it, and most of the kinetic energy will be absorbed by the buffer spring, so that the connecting rod stops swinging, and then the steel plate stops. The present invention is not only simple in structure, but also easy to use, and can reduce the impact of the inertia of the steel plate. However, the following problems still exist in practical applications, specifically:

[0005] 1. Most of the existing lifting devices use magnetic chucks for lifting. The magnetic chucks directly adsorb to the middle position, which will cause unbalanced force. Even for wide and thick plates, they will tilt and fall off during the lifting process. Single-point lifting will make the lifting unstable.

[0006] 2. In the existing process of lifting wide and thick steel plates, most of them are lifted by magnetic chucks or suction cups. When the magnetic chucks descend to fix and adsorb the steel plates, the magnetic chucks or suction cups will shake, resulting in the displacement of the adsorption position of the magnetic chucks. At the same time, during the lifting process, several groups of magnetic chucks need to be adjusted in position to ensure the uniformity of force. During the adjustment process, there will be problems of short shaking or even partial falling off;

[0007] 3. When the steel plate is fixed and lifted by the magnetic chuck or suction cup, the instability of the magnetic chuck or suction cup may cause the lifting to fail or the steel plate to fall off during the lifting process, causing damage to the workshop equipment and products and even safety problems. Most of the existing lifting equipment does not have safety protection and emergency fall prevention effects;

[0008] 4. During the process of magnetic suction or suction cup adsorption, the presence of dust or impurities on the steel plate will lead to poor magnetic suction effect. When the suction cup is used for negative pressure adsorption, air leakage may even occur, resulting in lifting failure.

[0009] Therefore, the present invention provides a crane for a 3800mm wide and thick plate production line to solve the above problems. Summary of the invention

[0010] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a crane for a 3800mm wide and thick plate production line, which effectively solves the problems of quickly fixing and clamping the steel plates, quickly lifting them, and avoiding the steel plates from falling off during the lifting process, causing equipment failure or safety failure.

[0011] The present invention comprises a bridge frame, a sliding trolley slidably connected to the inside of the bridge frame, an electric hoist connected to the inside of the sliding trolley, the electric hoist connected to a lifting cable placed below the sliding trolley, a lifting lock buckle fixedly connected to the lower end of the lifting cable, two symmetrically distributed lifting cables fixedly connected to the lower end of the lifting lock buckle, and a lifting plate frame fixedly connected to the lifting cable is placed below the lifting cable;

[0012] The lower end of the lifting plate frame is slidably connected to two symmetrically distributed lifting adsorption mechanisms, and the lifting adsorption mechanism includes a sliding sleeve rod slidably connected to the lifting plate frame, and the sliding sleeve rod is internally connected to two symmetrically distributed lifting rods for sliding forward and backward, and the two lifting rods slide in opposite directions and at equal distances inside the sliding sleeve rod, and the lower ends of the lifting rods are fixedly connected to lifting cables, and the other ends of the lifting cables are fixedly connected to fixed blocks, and the fixed blocks are fixedly connected to lifting electromagnets, and the lifting electromagnets are externally connected to a power supply, and the outer periphery of the lifting cables is provided with a telescopic spring, and the two ends of the telescopic spring are respectively fixedly connected to the lifting rod and the fixed block;

[0013] A telescopic adjustment mechanism is fixedly connected directly below the lifting plate frame, and the telescopic adjustment mechanism includes an adjustment hydraulic cylinder fixedly connected to the lifting plate frame, and two symmetrically distributed adjustment piston rods are slidably connected inside the adjustment hydraulic cylinder, and the two adjustment piston rods are synchronously slid in the opposite direction during the process of supplying pressure to the adjustment hydraulic cylinder, and the two adjustment piston rods are connected by a spring, and the adjustment hydraulic cylinder is connected to an external pressure supply device;

[0014] The middle position of the sliding sleeve is fixedly connected with an oil inlet pipe, one end of the lifting rod placed on the sliding sleeve is fixedly connected with a sliding piston, the two sliding pistons located inside the same sliding sleeve are connected by a spring, and the oil inlet pipes are connected to an external pressure supply device.

[0015] Preferably, the lifting rod is connected to a lifting safety mechanism at one end away from the sliding sleeve rod, the lifting safety mechanism comprises a telescopic rod slidably connected to the lifting rod, the lifting rod is provided with a storage hole matched with the telescopic rod, the lifting rod is rotatably connected to a rotating threaded sleeve, the rotating threaded sleeve drives the telescopic rod to slide inside the storage hole, the rotating threaded sleeve is coaxially fixedly connected to a rotating sprocket, and the rotating sprocket is externally connected to a driving source;

[0016] The telescopic rod is fixedly connected to a protective rod at one end away from the lifting rod, and the lower end of the protective rod is fixedly connected to a safety frame. The safety frame is rotatably connected to a plurality of support shafts. The support shafts on the same safety frame are distributed in an inverted "V" shape. The support shafts are coaxially rotatably connected to support roller sleeves, and the support roller sleeves are made of elastic rubber.

[0017] Preferably, the upper end of the lifting plate frame is fixedly connected to a limit frame, the limit frame is internally connected to a lifting limit plate which slides up and down, and the lifting limit plate and the lifting plate frame are connected via a spring;

[0018] The lifting limit plate is rotatably connected to a driving sleeve inside, and two symmetrically distributed connecting shafts are slidably connected inside the driving sleeve. The connecting shafts are coaxially fixedly connected to lifting sprockets, and a transmission chain is wound between the lifting sprockets and the rotating sprockets on the same side of the front and rear.

[0019] The limit frame is connected with a driving motor, and the driving motor and the driving shaft sleeve are connected through a chain transmission mechanism and a tensioning wheel mechanism.

[0020] Preferably, the upper end of the lifting rod is fixedly connected to a supporting vertical plate, the supporting vertical plate is slidably connected to a rectangular guide block on the side close to the lifting plate frame, and a synchronous sliding frame matched with the rectangular guide block is slidably connected between the two rectangular guide blocks on the same side of the front and rear, and the synchronous sliding frame is fixedly connected to the connecting shaft rod;

[0021] One end of the rectangular guide block away from the supporting vertical plate is fixedly connected with a limiting disc, and the limiting disc is in contact with the synchronous sliding frame.

[0022] Preferably, two symmetrically distributed storage rails are provided inside the fixed block, and ventilation pipes are fixedly connected inside the storage rails. A plurality of high-pressure nozzles are fixedly connected to the ventilation pipes on one side close to the bottom end of the fixed block. The ventilation pipes are connected to each other and to the air supply pump connected to the lifting plate frame.

[0023] Preferably, the end of the protection rod away from the lifting rod is fixedly connected with a protection sleeve, the interior of the protection sleeve is coaxially slidably connected with a protection shaft, and the end of the protection shaft away from the protection sleeve is coaxially fixedly connected with an elastic protection disk.

[0024] Preferably, a fixed disc is fixedly connected to the upper end of the fixed block, an annular groove is formed at the lower end of the fixed disc, an annular colored light is fixedly connected inside the annular groove, and the annular colored light is externally connected to a power source.

[0025] Preferably, the lower end of the lifting lock buckle is fixedly connected to an anti-sway frame, and the left and right ends of the anti-sway frame are fixedly connected to the lifting steel cable, and the lifting steel cable and the anti-sway frame form a triangular stable state.

[0026] The present invention improves the existing lifting equipment and has the following beneficial effects:

[0027] 1. By setting up the lifting and adsorption mechanism, telescopic adjustment mechanism, sliding sleeve rod, sliding piston and telescopic spring and other mechanisms, the steel plate can be quickly adsorbed and fixed, and the displacement of the fixed block during the adsorption process can be avoided. The four lifting points can be adjusted according to the size of the steel plate;

[0028] 2. The auxiliary support of the steel plate during the lifting process is effectively solved by setting up the telescopic rod, storage hole, rotating threaded sleeve, protective rod, safety frame and rotating roller sleeve. When the lifting electromagnet fails, the steel plate can be supported in an emergency to avoid falling;

[0029] 3. By setting up structures such as storage rails, ventilation pipes, high-pressure nozzles and air supply pumps, the problem of blowing and cleaning the adsorption area on the steel plate to ensure the stability of adsorption is effectively solved;

[0030] 4. The problem of synchronously adjusting the position of the telescopic rod is effectively solved by setting structures such as a limit frame, a lifting limit plate, a driving shaft sleeve and a connecting shaft rod, a lifting sprocket and a rotating sprocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0032] Figure 2 It is a schematic diagram of the lifting plate frame and its connecting frame of the present invention.

[0033] Figure 3 The present invention is schematically shown in cross-section Figure 1 .

[0034] Figure 4 The present invention is schematically shown in cross-section Figure 2 .

[0035] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram in the middle.

[0036] Figure 6 It is a schematic diagram of the lifting rod and its connecting parts of the present invention.

[0037] Figure 7 It is a cross-sectional schematic diagram of the lifting rod and its connecting parts of the present invention.

[0038] Figure 8 It is a schematic diagram of the fixing block and its connecting parts of the present invention.

[0039] Fig. 9 For the present invention Figure 8 A partial enlarged schematic diagram of point B in the middle.

[0040] Fig.10 It is a schematic diagram of the telescopic adjustment mechanism of the present invention.

[0041] Figure numerals: 1, bridge; 2, sliding trolley; 3, electric hoist; 4, lifting cable; 5, lifting lock; 6, lifting plate frame; 7, sliding sleeve rod; 8, lifting rod; 9, lifting cable; 10, fixed block; 11, lifting electromagnet; 12, telescopic spring; 13, adjusting hydraulic cylinder; 14, adjusting piston rod; 15, oil inlet pipe; 16, sliding piston; 17, telescopic rod; 18, storage hole; 19, rotating threaded sleeve; 20, rotating sprocket; 21, protective rod; 22, insurance Frame; 23, support shaft; 24, support roller sleeve; 25, limit frame; 26, lifting limit plate; 27, drive shaft sleeve; 28, connecting shaft rod; 29, lifting sprocket; 30, transmission chain; 32, support vertical plate; 33, rectangular guide block; 34, synchronous sliding frame; 35, limit disc; 36, storage rail; 37, ventilation pipe; 38, protective sleeve; 39, protective shaft; 40, elastic protective disc; 41, fixed disc; 43, ring-shaped colored lights; 44, anti-sway frame; 45, lifting cable. DETAILED DESCRIPTION

[0042] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 10 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0043] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0044] The present invention is a crane for a 3800mm wide and thick plate production line, comprising a bridge frame 1, a sliding trolley 2 slidably connected to the inside of the bridge frame 1, the sliding trolley 2 slides on the bridge frame 1 to adjust the lifting position, and the sliding mode of the bridge frame 1 and the sliding trolley 2 is a conventional setting, which will not be repeated here, the sliding trolley 2 is internally connected with an electric hoist 3, and the electric hoist 3 is connected to a lifting cable 4 placed under the sliding trolley 2, and the telescopic adjustment of the lifting cable 4 is achieved through the rotation of the electric hoist 3, and the electric hoist 3 is externally connected to a power supply, and the lower end of the lifting cable 4 is fixedly connected to a lifting lock 5, and the lower end of the lifting lock 5 is fixedly connected to two symmetrically distributed lifting A lowering steel cable 45 is provided below the lifting steel cable 45, and a lifting plate frame 6 fixedly connected to the lifting steel cable 45 is arranged. When the electric hoist 3 is lifted or lowered, the lifting lock buckle 5 is driven to be lifted or lowered synchronously, and then the lifting plate frame 6 is driven to be lifted or lowered synchronously through the lifting steel cable 45. The lower end of the lifting plate frame 6 is slidably connected to two symmetrically distributed lifting adsorption mechanisms, and the steel plate is fixed by the two lifting adsorption mechanisms, so that the steel plate is synchronously moved and lifted with the lifting plate frame 6. The lifting adsorption mechanism includes a sliding sleeve rod 7 slidably connected to the lifting plate frame 6, and the sliding sleeve rod 7 synchronously slides in the opposite direction inside the lifting plate frame 6 to adjust the position of the sliding sleeve rod 7. To achieve the adjustment of the position of the sliding sleeve 7, the sliding sleeve 7 is internally connected with two symmetrically distributed lifting rods 8 for sliding forward and backward, and the two lifting rods 8 slide in opposite directions and at equal distances inside the sliding sleeve 7. Through the sliding of the lifting rod 8, the lifting position can be further adjusted to ensure the universality of the lifting position. The lower ends of the lifting rods 8 are fixedly connected with lifting cables 9, and the other ends of the lifting cables 9 are fixedly connected with fixed blocks 10. When the lifting rods 8 are raised and lowered, the lifting cables 9 are driven to rise and fall synchronously, and at the same time, the fixed blocks 10 are driven to rise and fall synchronously through the lifting cables 9. The fixed blocks 10 are fixedly connected with lifting electromagnets 11 inside. The lifting electromagnets 11 external power supply, the steel plate is adsorbed by the lifting electromagnet 11, and the steel plate is synchronously slid and lifted with the lifting plate frame 6 through the strong magnetic attraction. In order to ensure the stability of the fixed block 10 and avoid the fixed block 10 from shaking significantly during the movement, the lifting steel cable 9 is sheathed with a telescopic spring 12. The two ends of the telescopic spring 12 are respectively fixedly connected to the lifting rod 8 and the fixed block 10. Through the expansion and contraction of the telescopic spring 12, the lifting steel cable 9 is always in a tensioned state, thereby ensuring that the four fixed plates are in the same plane. At the same time, it also has a buffering effect on the swing of the fixed block 10, ensuring the stability of lifting and adsorption of the steel plate.

[0045] In order to achieve the adjustment and control of the sliding of the sliding sleeve rod 7, a telescopic adjustment mechanism is fixedly connected to the lower part of the lifting plate frame 6, and the adjustment of the position of the sliding sleeve rod 7 is achieved through the telescopic adjustment mechanism. The telescopic adjustment mechanism includes an adjusting hydraulic cylinder 13 fixedly connected to the lifting plate frame 6, and two symmetrically distributed adjusting piston rods 14 are slidably connected inside the adjusting hydraulic cylinder 13. In the process of supplying pressure to the adjusting hydraulic cylinder 13, the two adjusting piston rods 14 are realized to slide synchronously in opposite directions. The two adjusting piston rods 14 are connected by a spring, and the adjusting hydraulic cylinder 13 is connected to an external pressure supply device. The pressure supplied by the external pressure supply device drives the two adjusting piston rods 14 to slide synchronously, thereby achieving the adjustment of the position of the sliding sleeve rod 7. When the adjusting hydraulic cylinder 13 is depressurized, under the action of the spring, the two sliding sleeve rods 7 slide toward each other, thereby resetting the sliding sleeve rod 7.

[0046] The middle position of the sliding sleeve 7 is fixedly connected with an oil inlet pipe 15, and one end of the lifting rod 8 placed on the sliding sleeve 7 is fixedly connected with a sliding piston 16. The two sliding pistons 16 located inside the same sliding sleeve 7 are connected by a spring, and the oil inlet pipe 15 is connected to an external pressure supply device. Hydraulic oil is supplied to the inside of the sliding sleeve 7 through the oil inlet pipe 15, thereby realizing the adjustment of the position of the lifting rod 8.

[0047] During the specific implementation of this embodiment, the positions of the lifting rod 8 and the sliding sleeve rod 7 are first adjusted according to the size of the steel plate with lifting belt to ensure that the fixed block 10 can be in a suitable lifting position, and then the electric hoist 3 is started, and the electric hoist 3 realizes the lifting and lowering adjustment of the lifting plate frame 6. When the lifting plate frame 6 slides down, the fixed block 10 drives the lifting electromagnet 11 to slide down synchronously, and the steel plate is adsorbed by the lifting electromagnet 11. Then the electric hoist 3 controls the lifting plate frame 6 to rise, and then the lifting electromagnet 11 is used to lift the steel plate synchronously. At the same time, under the action of the sliding trolley 2 and the bridge frame 1, the steel plate is lifted to a suitable position.

[0048] During the lifting process, since the lifting is carried out by magnetic adsorption, if the lifting cable 9 and the lifting electromagnet 11 fail, the steel plate will fall off, causing a failure or even a safety accident. Therefore, in order to provide auxiliary support for the steel plate and ensure that the steel plate can be supported when the lifting electromagnet 11 and the lifting cable 9 fail to prevent the steel plate from falling and causing a safety accident and damage to other components, the present embodiment provides a structure for auxiliary support and insurance protection of the steel plate. Specifically, the lifting rod 8 is connected to a lifting safety mechanism at one end away from the sliding sleeve rod 7. The lifting safety mechanism supports the steel plate that suddenly falls off to prevent the steel plate from falling and causing a safety accident. The lifting safety mechanism includes a telescopic rod 17 slidably connected to the lifting rod 8. The lifting rod 8 is provided with a A storage hole 18 that matches the telescopic rod 17, a rotating threaded sleeve 19 that is rotatably connected to the lifting rod 8, and the rotating threaded sleeve 19 drives the telescopic rod 17 to slide inside the storage hole 18. A polygonal limiting rod is fixedly connected inside the storage hole 18, and the telescopic rod 17 is provided with a polygonal limiting hole that matches the polygonal limiting rod. Under the cooperation of the polygonal limiting rod and the polygonal limiting hole, the telescopic rod 17 slides inside the storage hole 18, and the rotating threaded sleeve 19 is coaxially fixedly connected with a rotating sprocket 20. The rotating sprocket 20 is externally connected to a driving source, and during the rotation process of the rotating sprocket 20, the rotating threaded sleeve 19 is driven to rotate synchronously, and then the sliding drive of the telescopic rod 17 is realized through the threaded cooperation of the rotating threaded sleeve 19 and the telescopic rod 17.

[0049] The telescopic rod 17 is fixedly connected to a protective rod 21 at one end away from the lifting rod 8, and a safety frame 22 is fixedly connected to the lower end of the protective rod 21. When the lifting rod 8 is raised or lowered, the protective rod 21 and the safety frame 22 are driven to rise or fall synchronously. The safety frame 22 is rotatably connected to a plurality of support shafts 23. The support shafts 23 on the same safety frame 22 are distributed in an inverted "V" shape. The support shafts 23 are coaxially rotatably connected to support roller sleeves 24. The support roller sleeves 24 are made of elastic rubber. When the telescopic rod 17 is moved toward the lifting frame, the protective rod 21 and the safety frame 22 are driven to rise or fall synchronously. During the side sliding process, the safety frame 22 can be placed under the steel plate. At the same time, through the gradual movement of the safety frame 22, the lower end surface of the steel plate can be brought into contact with one of the supporting roller sleeves 24, thereby achieving auxiliary support for the steel plate. At the same time, during the falling process of the steel plate, the safety frame 22 and the supporting roller sleeve 24 further support the steel plate, thereby playing a role in safety protection. At the same time, when the telescopic rod 17 slides in the opposite direction, the steel plate can be placed by the inclined rotating roller sleeve to avoid violent collision.

[0050] In order to achieve synchronous adjustment of the telescopic rod 17 and ensure stable support for the steel plate, the upper end of the lifting plate frame 6 is fixedly connected to the limit frame 25, and the limit frame 25 is internally connected to a lifting limit plate 26 for sliding up and down. The lifting limit plate 26 and the lifting plate frame 6 are connected by a spring. Under the action of the spring, the lifting limit plate 26 always has an upward sliding force. The lifting limit plate 26 is internally rotatably connected to a driving shaft sleeve 27. The driving shaft sleeve 27 is internally connected to slide forward and backward with two connecting shafts 28 symmetrically distributed front and back. The connecting shafts 28 are coaxially connected A lifting sprocket 29 is fixedly connected, and a transmission chain 30 is wound between the lifting sprocket 29 and the rotating sprocket 20 on the same side of the front and rear. A driving motor is connected to the limit frame 25, and the driving motor and the driving shaft sleeve 27 are connected through a chain transmission mechanism and a tensioning wheel mechanism. The rotation of the driving motor drives the driving shaft sleeve 27 to rotate through the tensioning wheel mechanism, and the rotation of the driving shaft sleeve 27 drives the connecting shaft rod 28 to rotate synchronously, thereby realizing the driving of the rotating sprocket 20 and the synchronous adjustment of the position of the telescopic rod 17, thereby ensuring effective emergency support for the steel plate.

[0051] In order to ensure the sliding stability of the connecting shaft 28, and at the same time ensure the stability of the transmission chain transmission, and ensure the synchronous telescopic sliding of the connecting shaft 28 and the lifting frame, the upper end of the lifting rod 8 is fixedly connected to a support vertical plate 32, and the support vertical plate 32 is connected to a rectangular guide block 33 that slides up and down close to the lifting plate frame 6. The rectangular guide block 33 can slide up and down along the support vertical plate 32, and rise and fall synchronously with the rise and fall of the connecting shaft 28. The two rectangular guide blocks 33 on the same side of the front and rear are connected to a same rectangular guide block 33 that slides left and right. The step sliding frame 34, the synchronous sliding frame 34 and the connecting shaft 28 are fixedly connected, the rectangular guide block 33 is fixedly connected to the limiting disk 35 at one end away from the supporting vertical plate 32, and the limiting disk 35 and the synchronous sliding frame 34 are in contact and connected. Under the action of the limiting disk 35, the process of extension and retraction of the lifting rod 8 drives the connecting shaft 28 to extend and retract synchronously, and at the same time, it is ensured that during the process of the lifting rod 8 sliding left and right with the sliding sleeve 7, the connecting shaft 28 slides up and down, thereby realizing the tensioning of the transmission chain and ensuring the stability of the transmission between the transmission chains.

[0052] The fixed block 10 is provided with two symmetrically distributed storage rails 36 inside, and the storage rails 36 are fixedly connected with ventilation pipes 37 inside. A plurality of high-pressure nozzles are fixedly connected to the ventilation pipes 37 on one side close to the bottom end of the fixed block 10. The ventilation pipes 37 are connected to each other and are connected to the air supply pump connected to the lifting plate frame 6. The air supply pump supplies air to the ventilation pipes 37, and then the high-pressure nozzles can be used to clean the positions of the steel plates that need to be adsorbed, thereby ensuring the stability of the magnetic suction and avoiding the presence of debris between the lifting electromagnet 11 and the steel plate, which would cause unstable magnetic suction.

[0053] In order to prevent the protection rod 21, the safety frame 22 and other mechanisms from colliding during the sliding process and causing equipment failure, the present embodiment provides a structure for protecting the equipment. The protection rod 21 is fixedly connected to a protection sleeve 38 at one end away from the lifting rod 8. A protection shaft 39 is coaxially slidably connected inside the protection sleeve 38. The protection shaft 39 is coaxially fixedly connected to an elastic protection disk 40 at one end away from the protection sleeve 38. The elastic buffering of the elastic protection disk 40 can avoid direct contact between the protection rod 21, the safety frame 22 and external obstacles, thereby ensuring the stability of the equipment and reducing the failure rate.

[0054] A fixed disc 41 is fixedly connected to the upper end of the fixed block 10, and an annular groove is provided at the lower end of the fixed disc 41. An annular colored light 43 is fixedly connected to the inside of the annular groove. The annular colored light 43 is externally connected to a power supply, and the colored light is projected onto the steel plate through the annular colored light 43 to locate the magnetic suction position. At the same time, the position of the fixed block 10 is further adjusted according to the light irradiation position.

[0055] In order to prevent the lifting cable 45 from swinging or even getting tangled, and to prevent the lifting plate frame 6 from rotating during the lifting process, the lower end of the lifting lock 5 is fixedly connected to an anti-sway frame 44, and the left and right ends of the anti-sway frame 44 are fixedly connected to the lifting cable 45, and the lifting cable 45 and the anti-sway frame 44 form a triangular stable state.

[0056] When the present invention is used in practice, the positions of the lifting rod 8 and the sliding sleeve rod 7 are first adjusted according to the size of the steel plate with lifting, to ensure that the fixed block 10 can be in a suitable lifting position, and then the electric hoist 3 is started, and the electric hoist 3 realizes the lifting and lowering adjustment of the lifting plate frame 6. When the lifting plate frame 6 slides down, the fixed block 10 drives the lifting electromagnet 11 to slide down synchronously, and the steel plate is adsorbed by the lifting electromagnet 11. Then the electric hoist 3 controls the lifting plate frame 6 to rise, and then the lifting electromagnet 11 is used to realize the synchronous lifting of the steel plate. After a certain distance of the lifting process, the driving motor rotates to realize the sliding of the telescopic rod 17 into the storage hole 18, and then the safety frame 22 and the support roller sleeve 24 are placed at the lower end of the steel plate to realize auxiliary support for the steel plate, and then the steel plate is lifted to a suitable position under the action of the sliding trolley 2 and the bridge frame 1.

[0057] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A crane for a 3800 mm wide and thick plate production line, comprising a bridge frame (1), and a trolley (2) slidably connected to the inside of the bridge frame (1), characterized in that: The sliding trolley (2) is internally connected to an electric hoist (3), the electric hoist (3) is connected to a lifting steel cable (4) disposed below the sliding trolley (2), the lower end of the lifting steel cable (4) is fixedly connected to a lifting lock (5), the lower end of the lifting lock (5) is fixedly connected to two symmetrically distributed lifting steel cables (45), and a lifting plate frame (6) fixedly connected to the lifting steel cable (45) is disposed below the lifting steel cable (45); The lower end of the lifting plate frame (6) is slidably connected to two symmetrically distributed lifting and adsorption mechanisms, and the lifting and adsorption mechanisms include a sliding sleeve rod (7) slidably connected to the lifting plate frame (6), and the sliding sleeve rod (7) is internally slidably connected to two symmetrically distributed lifting rods (8), and the two lifting rods (8) slide in opposite directions and at equal distances inside the sliding sleeve rod (7). The lower ends of the lifting rods (8) are fixedly connected to lifting cables (9), and the other ends of the lifting cables (9) are fixedly connected to fixed blocks (10). The fixed blocks (10) are fixedly connected to lifting electromagnets (11), and the lifting electromagnets (11) are externally connected to a power supply. The outer periphery of the lifting cable (9) is provided with a telescopic spring (12), and the two ends of the telescopic spring (12) are respectively fixedly connected to the lifting rod (8) and the fixed block (10); A telescopic adjustment mechanism is fixedly connected directly below the lifting plate frame (6), and the telescopic adjustment mechanism includes an adjustment hydraulic cylinder (13) fixedly connected to the lifting plate frame (6). Two symmetrically distributed adjustment piston rods (14) are slidably connected inside the adjustment hydraulic cylinder (13). In the process of supplying pressure to the adjustment hydraulic cylinder (13), the two adjustment piston rods (14) are synchronously slid in opposite directions. The two adjustment piston rods (14) are connected via a spring, and the adjustment hydraulic cylinder (13) is connected to an external pressure supply device. The middle position of the sliding sleeve rod (7) is fixedly connected to an oil inlet pipe (15), one end of the lifting rod (8) placed on the sliding sleeve rod (7) is fixedly connected to a sliding piston (16), two sliding pistons (16) located inside the same sliding sleeve rod (7) are connected via a spring, and the oil inlet pipe (15) is connected to an external pressure supply device.

2. The crane for a 3800 mm wide and thick plate production line according to claim 1 is characterized in that: The lifting rod (8) is connected to one end away from the sliding sleeve rod (7) with a lifting safety mechanism, and the lifting safety mechanism includes a telescopic rod (17) slidably connected to the lifting rod (8), and the lifting rod (8) is provided with a storage hole (18) that matches the telescopic rod (17). The lifting rod (8) is rotatably connected to a rotating threaded sleeve (19), and the rotating threaded sleeve (19) rotates to drive the telescopic rod (17) to slide inside the storage hole (18). The rotating threaded sleeve (19) is coaxially fixedly connected to a rotating sprocket (20), and the rotating sprocket (20) is externally connected to a driving source; The telescopic rod (17) is fixedly connected to one end away from the lifting rod (8) with a protective rod (21), and the lower end of the protective rod (21) is fixedly connected to a safety frame (22). The safety frame (22) is rotatably connected to a plurality of support shafts (23). The support shafts (23) on the same safety frame (22) are distributed in an inverted "V" shape. The support shafts (23) are coaxially rotatably connected to support roller sleeves (24), and the support roller sleeves (24) are made of elastic rubber material.

3. The crane for a 3800 mm wide and thick plate production line according to claim 2 is characterized in that: The upper end of the lifting plate frame (6) is fixedly connected to a limit frame (25), the limit frame (25) is internally connected to a lifting limit plate (26) in a manner that it can slide up and down, and the lifting limit plate (26) and the lifting plate frame (6) are connected via a spring; The lifting limit plate (26) is rotatably connected to a driving shaft sleeve (27) inside, and two symmetrically distributed connecting shafts (28) are slidably connected inside the driving shaft sleeve (27) in a forward and backward manner. The connecting shafts (28) are coaxially fixedly connected to lifting sprockets (29), and a transmission chain (30) is wound between the lifting sprockets (29) and the rotating sprocket (20) on the same front and rear sides. The limiting frame (25) is connected to a driving motor, and the driving motor and the driving shaft sleeve (27) are connected via a chain transmission mechanism and a tensioning wheel mechanism.

4. The crane for a 3800 mm wide and thick plate production line according to claim 3 is characterized in that: The upper end of the lifting rod (8) is fixedly connected to a supporting vertical plate (32), and the supporting vertical plate (32) is slidably connected to a rectangular guide block (33) on the side close to the lifting plate frame (6) up and down, and a synchronous sliding frame (34) matching with the rectangular guide block (33) is slidably connected between the two rectangular guide blocks (33) on the same side of the front and rear, and the synchronous sliding frame (34) is fixedly connected to the connecting shaft (28); One end of the rectangular guide block (33) away from the supporting vertical plate (32) is fixedly connected to a limiting disc (35), and the limiting disc (35) is in contact with the synchronous sliding frame (34).

5. The crane for a 3800 mm wide and thick plate production line according to claim 1 is characterized in that: The fixed block (10) is provided with two symmetrically distributed storage rails (36), and the storage rails (36) are fixedly connected with ventilation pipes (37). A plurality of high-pressure nozzles are fixedly connected to the ventilation pipes (37) on one side close to the bottom of the fixed block (10). The ventilation pipes (37) are connected to each other and are connected to an air supply pump connected to the lifting plate frame (6).

6. The crane for a 3800 mm wide and thick plate production line according to claim 4, characterized in that: The end of the protection rod (21) away from the lifting rod (8) is fixedly connected to a protection sleeve (38), the interior of the protection sleeve (38) is coaxially slidably connected to a protection shaft (39), and the end of the protection shaft (39) away from the protection sleeve (38) is coaxially fixedly connected to an elastic protection disk (40).

7. The crane for a 3800 mm wide and thick plate production line according to claim 4, characterized in that: The upper end of the fixed block (10) is fixedly connected to a fixed disc (41), the lower end of the fixed disc (41) is provided with an annular groove, the interior of the annular groove is fixedly connected to an annular colored light (43), and the annular colored light (43) is externally connected to a power source.

8. The crane for a 3800 mm wide and thick plate production line according to claim 1, characterized in that: The lower end of the lifting lock buckle (5) is fixedly connected to an anti-sway frame (44), and the left and right ends of the anti-sway frame (44) are fixedly connected to the lifting steel cable (45), and the lifting steel cable (45) and the anti-sway frame (44) form a triangular stable state.

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