Crane for steel rolling production line

Abstract

The invention belongs to the technical field of hoisting equipment, and discloses a crane for a steel rolling production line, the crane comprises a crane body, the lower end of the crane body is connected with a hoisting frame through a steel cable, and two symmetrically distributed sliding thread bushings are slidably connected in the hoisting frame; the sliding threaded sleeves are in threaded connection with a double-end lead screw rotationally connected into the lifting frame, the double-end lead screw drives the two sliding threaded sleeves to slide reversely in the rotating process, hydraulic telescopic rods are fixedly connected to the ends, away from the lifting frame, of the sliding threaded sleeves correspondingly, and lifting vertical arms are fixedly connected to the ends, away from the lifting frame, of the hydraulic telescopic rods correspondingly. The lower ends of the lifting vertical arms are fixedly connected with steel drum clamping structures, and clamping and limiting of a steel drum are achieved through the two symmetrically-distributed steel drum clamping structures. And the practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, in particular to a crane used in a steel rolling production line. Background Art

[0002] Steel coil, also known as coil steel, is formed into coils by hot or cold pressing. In order to facilitate storage and transportation, and to facilitate various processing (such as processing into steel plates, steel strips, etc.), the formed coils are mainly hot-rolled coils and cold-rolled coils. Hot-rolled coils are processed products before the steel billet recrystallizes, and cold-rolled coils are the subsequent processing of hot-rolled coils. When lifting steel coils, they are mainly lifted by steel coil hoists.

[0003] A Chinese patent with application number CN202420816510.5 discloses a steel coil lifting device, in which two gears rotate relative to each other to enable the rack to drive the lifting sliders on both sides to move relative to each other, and the lifting slider can drive the lifting column to move, so that the distance between the connecting blocks on both sides can be adjusted, so that the device can lift steel coils of various widths; the lifting sliders on both sides move relative to each other, so that the lifting column is inserted into the center hole of the steel coil, and the connecting blocks on both sides contact the side surfaces of the steel coil, and the device can lift the steel coil through the lifting column, and the connecting blocks on both sides contact the steel coil, so that the steel coil will not slide during lifting, thereby improving the safety during lifting.

[0004] A Chinese patent with application number CN202311300904.1 discloses a cold-rolled strip steel coil lifting equipment. In this application, a pressure plate is set. When in use, the support shaft drives the pressure plate through the mounting part to insert into the inner ring of the strip steel coil. The lifting head lifts the support plate through the connecting part. The support plate lifts the pressure plate upward through the support plate, the support shaft and the mounting part. The arc surface of the pressure plate is attached to the inner ring surface of the strip steel coil, and the strip steel coil is lifted and transferred. The arc surface of the pressure plate is fully in contact with the inner ring surface of the strip steel coil, which increases the contact area between the pressure plate and the strip steel coil when lifting, prevents indentations from appearing on the surface of the strip steel coil when it is lifted locally, and is beneficial to ensure the quality of the strip steel coil after lifting and transfer. By setting a reinforcing plate on one side of a pair of supporting plates and below the supporting shaft, the pressure plate transmits the extrusion force to the supporting shaft through the mounting member during lifting, and a reinforcing plate is set below the supporting shaft to support the lower position of the supporting shaft, limit the deformation of the supporting shaft, prevent the supporting shaft from being bent due to excessive force during lifting, and improve the service life of the supporting shaft. However, the following problems still exist in practical applications, specifically: 1. In the existing steel drum lifting process, the inner wall support limit of the steel drum is unstable, and the inertia force will appear during the lifting process, causing the steel drum to shake, and it is impossible to effectively fix the inner wall of the steel drum before lifting it; 2. The same sling cannot be used for steel reels with different inner diameters, and the sling needs to be replaced frequently, which is time-consuming and labor-intensive; 3. When the hoist is clamping the steel drum, the steel cable will shake, causing the hoist to shake, and then the hoist needs to be clamped by auxiliary limit clamping, which is inefficient and cannot effectively ensure the stability of the connection between the hoist and the steel drum.

[0005] Therefore, the present invention provides a crane for a steel rolling production line to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a crane for a steel rolling production line, which effectively solves the problems of effective limit clamping of the steel reel, ensuring the relative stability between the sling and the steel reel, and adaptive adjustment for steel reels with different outer diameters.

[0007] The present invention comprises a crane body, wherein the lower end of the crane body is connected to a lifting frame through a steel cable, and the lifting frame is internally slidably connected with two symmetrically distributed sliding threaded sleeves, and the sliding threaded sleeve is threadedly connected to a double-headed screw rod rotatably connected to the inside of the lifting frame, and the two sliding threaded sleeves are driven to slide in opposite directions during the rotation of the double-headed screw rod, and the sliding threaded sleeve is fixedly connected to a hydraulic telescopic rod at one end away from the lifting frame, and the hydraulic telescopic rod is fixedly connected to a lifting vertical arm at one end away from the lifting frame, and the lower end of the lifting vertical arm is fixedly connected to a steel drum clamping structure, and the clamping and limiting of the steel drum is achieved through the two symmetrically distributed steel drum clamping structures; The steel reel clamping structure includes a supporting shaft rod fixedly connected to the lifting vertical arm, and the supporting shaft rod is fixedly connected to a plurality of equicircularly distributed limit groove rails on a side away from the lifting vertical arm, and the limit groove rails are rotatably connected with a double-headed adjusting screw rod, and the limit groove rails are slidably connected with two symmetrically distributed adjusting threaded sleeves, the two adjusting threaded sleeves are threadedly connected to the double-headed adjusting screw rod, and the rotation of the double-headed adjusting screw rod drives the two adjusting threaded sleeves to slide in the opposite direction. The upper ends of the adjusting threaded sleeves are rotatably connected with a rotating crank, and a lifting cross plate is rotatably connected between the two rotating cranks, the upper end of the lifting cross plate is fixed with a limit chuck, and the end of the limit chuck away from the lifting cross plate is in an arc shape, and the lower end of the lifting cross plate is fixedly connected with two lifting limit rods, and the limit groove rail is fixedly connected with a limit sleeve coaxially slidably connected to the lifting limit rod, and the double-headed adjusting screw rods are connected to the screw rod driving structure connected to the supporting shaft rod.

[0008] Preferably, the screw drive structure includes a rotating pinion coaxially fixedly connected to the double-headed adjusting screw, the rotating pinion is placed on the side of the supporting shaft away from the lifting vertical arm, the supporting shaft is rotatably connected with a driving gear plate meshing with the rotating pinion, the driving gear plate and the driving shaft rotatably connected at the axis center of the supporting shaft are coaxially fixedly connected, the driving shaft is connected to an adjusting motor connected to the supporting shaft, and the adjusting motors are connected to a control module connected to the crane body.

[0009] Preferably, the lifting vertical arm comprises a main sleeve rod fixedly connected to the hydraulic telescopic rod, a secondary sleeve rod is slidably connected to the inside of the main sleeve rod, and the lower end of the secondary sleeve rod is fixedly connected to the supporting shaft rod; A strong spring is fixedly connected to the upper end of the secondary sleeve rod, and the other end of the strong spring is fixedly connected to the main sleeve rod. The secondary sleeve rod and the main sleeve rod are connected via a sleeve rod driving mechanism, and the telescopic length of the secondary sleeve rod can be adjusted via the sleeve rod driving mechanism.

[0010] Preferably, the sleeve rod driving mechanism is an electric push rod structure, and the electric push rod is used to realize the telescopic drive of the secondary sleeve rod; The left and right sides of the secondary sleeve rod are provided with serrated limit grooves, and the serrated limit grooves are provided with limit rack plates on the side away from the secondary sleeve rod. The secondary sleeve rod is limited by the cooperation of the limit rack plate and the serrated limit grooves. The limit rack plate is slidably connected to the main sleeve rod, and the end of the limit rack plate away from the secondary sleeve rod is fixedly connected with a magnetic suction plate, and an electromagnetic suction cup is connected inside the main sleeve rod, and the magnetic suction plate and the electromagnetic suction cup are connected by a spring.

[0011] Preferably, the electromagnetic suction cup is slidably connected to the main sleeve rod, the electromagnetic suction cup is fixedly connected to a sliding piston plate on the side away from the secondary sleeve rod, the left and right sides of the main sleeve rod are fixedly connected to hydraulic tanks that cooperate with the sliding piston plate, the hydraulic tanks are fixedly connected to oil inlet pipes, and the oil inlet pipes are connected to an external oil supply device.

[0012] Preferably, the lower end of the lifting frame is fixedly connected to two fixed ear plates symmetrically distributed front and back, the lower end of the fixed ear plate is rotatably connected to a swing arm rod, and the end of the swing arm rod away from the fixed ear plate is fixedly connected to a clamping limit frame; A connecting arm is fixedly connected to the middle of the swing arm, and the other ends of the connecting arm are rotatably connected to an adjusting crank, and the two adjusting cranks are rotatably connected; The lower end of the lifting frame is fixedly connected with an adjusting sleeve, the interior of the adjusting sleeve is slidably connected with a lifting sleeve, the lifting sleeve and the adjusting sleeve are connected via a spring, and the lower end of the lifting sleeve is rotatably connected with the adjusting crank; The clamping limit frame is connected with a clamping wheel, and the clamping wheel is provided with friction lines.

[0013] Preferably, the clamping wheel and the clamping limit frame are rotatably connected, the clamping wheels on the same clamping limit frame are connected through a chain transmission mechanism, and one clamping wheel on the same clamping limit frame is connected to an adjusting motor connected to the clamping limit frame.

[0014] Preferably, the clamping limit frame is fixedly connected to a limit electromagnetic plate on one side close to the lifting frame, and the limit electromagnetic plate is externally connected to a power supply.

[0015] Preferably, the supporting shaft on one side is fixedly connected to an infrared transmitter at one end away from the lifting vertical arm, and the supporting shaft on the other side is fixedly connected to an infrared receiver that cooperates with the infrared transmitter, and the infrared transmitter and infrared receiver are both connected to the control module.

[0016] The present invention improves the existing injection mold leakage detection equipment and has the following beneficial effects: 1. By setting up the lifting frame, double-headed screw, sliding threaded sleeve, hydraulic telescopic rod, lifting vertical arm, supporting shaft, double-headed adjusting screw, rotating crank, lifting horizontal plate and limit chuck and other mechanisms, the steel drum can be effectively clamped and limited. It is suitable for steel drums with different inner diameters and avoids the problem of inertial shaking of the steel drum during the lifting process; 2. The main sleeve rod, secondary sleeve rod, limit rack plate, serrated limit groove, electromagnetic suction cup, magnetic suction plate and sliding piston plate are provided to effectively solve the problem of lifting steel drums with different outer diameters, and the distance between the supporting shaft rod and the lifting frame can be adaptively adjusted; 3. By setting up structures such as swing arm, clamping limit frame, connecting arm, adjusting crank, clamping wheel, etc., the effective contact between the clamping wheel and the steel drum is effectively solved. At the same time, the clamping of the steel drum by the clamping wheel ensures the stability between the lifting frame and the steel drum. It can also be applied to steel drums with different outer diameters to ensure that the steel cable is always in a straightened state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the lifting frame and its connecting parts of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the lifting frame of the present invention.

[0020] Figure 4 It is a schematic diagram of the driving structure of the swing arm of the present invention.

[0021] Figure 5 It is a schematic diagram of the lifting vertical arm and its connecting parts of the present invention.

[0022] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram in the middle.

[0023] Figure 7 The internal structure of the lifting vertical arm of the present invention is schematically shown. Figure 1 .

[0024] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0025] Fig. 9 The internal structure of the lifting vertical arm of the present invention is schematically shown. Figure 2 .

[0026] Fig.10 For the present invention Fig. 9 A partial enlarged schematic diagram of point C in the middle.

[0027] Figure numerals: 1, crane body; 2, lifting frame; 3, sliding threaded sleeve; 4, double-headed screw; 6, hydraulic telescopic rod; 7, lifting vertical arm; 8, supporting shaft rod; 9, limit groove rail; 10, double-headed adjusting screw; 11, adjusting threaded sleeve; 12, rotating crank; 13, lifting horizontal plate; 14, limit chuck; 15, lifting limit rod; 16, limit sleeve; 17, rotating pinion; 18, driving gear plate; 20, adjusting motor; 21, main sleeve rod ; 22. Secondary sleeve rod; 24. Serrated limit groove; 25. Limit rack plate; 26. Magnetic plate; 27. Electromagnetic suction cup; 28. Sliding piston plate; 29. ​​Hydraulic chamber; 30. Oil inlet pipe; 31. Fixed ear plate; 32. Clamping limit frame; 33. Swing arm rod; 34. Connecting arm rod; 35. Adjusting crank; 36. Adjusting sleeve; 37. Lifting sleeve; 38. Clamping wheel; 39. Limiting electromagnetic plate; 40. Infrared transmitter; 41. Infrared receiver. DETAILED DESCRIPTION

[0028] 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.

[0029] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] The present invention is a crane for a steel rolling production line, comprising a crane body 1, wherein the crane body 1 is a conventional crane structure, which realizes the lifting and lowering of a steel cable, and is convenient for lifting goods. The following description will not be repeated herein. The lower end of the crane body 1 is connected to a lifting frame 2 through a steel cable, and the lifting frame 2 is driven to rise and fall synchronously during the lifting and lowering process of the steel cable. The lifting frame 2 is internally slidably connected with two symmetrically distributed sliding threaded sleeves 3, and the sliding threaded sleeves 3 are threadedly connected to a double-headed screw rod 4 rotatably connected to the inside of the lifting frame 2. The rotation process of the double-headed screw rod 4 drives the two sliding threaded sleeves 3 to slide synchronously in the opposite direction, so as to realize the lifting of the two sliding threaded sleeves. 3, the sliding threaded sleeve 3 is fixedly connected to the hydraulic telescopic rod 6 at one end away from the lifting frame 2, and the hydraulic telescopic rod 6 is driven to slide synchronously during the sliding process of the sliding threaded sleeve 3, so as to adjust the distance between the two hydraulic telescopic rods 6, and the hydraulic telescopic rod 6 is fixedly connected to the lifting vertical arm 7 at one end away from the lifting frame 2, and the telescopic movement of the hydraulic telescopic rod 6 drives the lifting vertical arm 7 to slide synchronously, and the lower end of the lifting vertical arm 7 is fixedly connected to a steel drum clamping structure, and the clamping limit of the steel drum is realized by two symmetrically distributed steel drum clamping structures, so as to facilitate the lifting and transportation of the steel drum.

[0031] In order to achieve effective limit clamping of the steel reel and avoid shaking or rotation of the steel reel during the lifting process, the present embodiment provides a mechanism for effectively limiting and clamping the steel reel. Specifically, the steel reel clamping structure includes a supporting shaft rod 8 fixedly connected to the lifting vertical arm 7. The supporting shaft rod 8 and the lifting vertical arm 7 move synchronously. The supporting shaft rod 8 is fixedly connected to a side away from the lifting vertical arm 7 with a plurality of equally circumferentially distributed limit groove rails 9. The limit groove rails 9 are rotatably connected with double limit groove rails. The double-headed adjusting screw rod 10, the limiting groove rail 9 is slidably connected with two symmetrically distributed adjusting thread sleeves 11, the double-headed adjusting screw rod 10 rotates, driving the two adjusting thread sleeves 11 to slide in the opposite direction, thereby realizing the adjustment of the positions of the two adjusting thread sleeves 11, the two adjusting thread sleeves 11 are threadedly connected to the double-headed adjusting screw rod 10, and the rotation process of the double-headed adjusting screw rod 10 drives the two adjusting thread sleeves 11 to slide in the opposite direction, and the upper ends of the adjusting thread sleeves 11 are rotatably connected with a rotating crank 1 2. A lifting horizontal plate 13 is rotatably connected between the two rotating cranks 12. A limit chuck 14 is fixed on the upper end of the lifting horizontal plate 13. The limit chuck 14 is in an arc shape at one end away from the lifting horizontal plate 13. Two lifting limit rods 15 are fixedly connected to the lower end of the lifting horizontal plate 13. A limit sleeve 16 coaxially slidably connected to the lifting limit rod 15 is fixedly connected inside the limit groove rail 9. Through the limiting action of the lifting limit rod 15 and the limit sleeve 16, the lifting horizontal plate 13 can only slide up and down. The double-headed adjusting screw 10 is connected to the screw driving structure connected to the supporting shaft 8. The double-headed adjusting screw 10 rotates to realize the rotation of the adjusting threaded sleeve 11, and the lifting cross plate 13 is driven to rise and fall through the rotating crank 12. When the lifting cross plate 13 is lifted and lowered, the limit chuck 14 is driven to rise and fall synchronously, thereby realizing effective support and limitation of the inner wall of the steel reel, facilitating the subsequent lifting and transportation of the steel reel, ensuring the stability of the lifting, and being suitable for steel reels with different inner diameters.

[0032] During the implementation of this embodiment, in the initial state, the distance between the two supporting shafts 8 is at the maximum. During the lifting process of the steel drum, the lifting frame is first transported to the lifting position, and then the double-headed screw rod 4 and the hydraulic telescopic rod 6 are started to adjust the distance between the lifting vertical arms 7. The supporting shaft 8 is inserted into the interior of the steel drum. After the support shaft 8 is inserted into the steel drum, the double-headed adjusting screw rod 10 is started to drive the lifting cross plate 13, so that the lifting cross plate 13 rises, and then the inner wall of the steel drum is supported and clamped by the limit clamp, thereby ensuring that the steel drum is in a stable state during the lifting process without rolling or shaking.

[0033] In order to achieve the effective drive of the double-headed adjusting screw 10, ensure the synchronous rotation of the double-headed adjusting screw 10 on the same supporting shaft 8, and ensure that the lifting horizontal plate 13 is lifted and lowered by the same distance, the screw driving structure includes a rotating pinion 17 coaxially fixedly connected to the double-headed adjusting screw 10, and the rotating pinion 17 is placed on the supporting shaft 8 away from the side of the lifting vertical arm 7. The supporting shaft 8 is rotatably connected with a driving gear plate 18 meshing with the rotating pinion 17. The rotation of the driving gear plate 18 drives the meshing rotating pinion 17 to rotate synchronously. The rotation of the gear 17 drives the double-headed adjusting screw 10 to rotate, thereby realizing the adjustment of the lifting and lowering of the lifting cross plate 13. The active gear plate 18 is coaxially fixedly connected to the driving shaft rotatably connected to the axis of the supporting shaft 8. The driving shaft is connected to the adjusting motor 20 connected to the supporting shaft 8. The adjusting motor 20 is connected to the control module connected to the crane body 1. The driving of the driving shaft is realized through the control module. At the same time, the rotation of the driving shaft drives the active gear plate 18 to rotate synchronously, thereby realizing the driving of the rotating pinion 17.

[0034] During the process of lifting the steel drum, due to the different outer diameters of the steel drum, it is necessary to adjust the length of the lifting vertical arm 7 to ensure that the distance between the lifting frame 2 and the supporting shaft 8 is suitable for steel drums with different outer diameters. Therefore, the fundamental embodiment provides a structure for adjusting the distance between the lifting frame and the supporting shaft 8. Specifically, the lifting vertical arm 7 includes a main sleeve rod 21 fixedly connected to the hydraulic telescopic rod 6, and a secondary sleeve rod 22 is connected to the main sleeve rod 21 for sliding up and down movement. The lower end of the secondary sleeve rod 22 is fixedly connected to the supporting shaft 8, and the secondary sleeve rod 22 slides along the main sleeve rod 21, thereby realizing the adjustment of the length of the lifting vertical arm 7, and then realizing the adjustment of the distance between the lifting beam and the supporting shaft 8 to be suitable for steel drums with different outer diameters.

[0035] A strong spring is fixedly connected to the upper end of the secondary sleeve rod 22, and the other end of the strong spring is fixedly connected to the main sleeve rod 21. The secondary sleeve rod 22 and the main sleeve rod 21 are connected via a sleeve rod driving mechanism, and the sleeve rod driving mechanism is used to adjust the telescopic length of the secondary sleeve rod 22. The sleeve rod driving mechanism is an electric push rod structure, and the electric push rod is used to realize the telescopic drive of the secondary sleeve rod 22, thereby realizing the adjustment of the length of the lifting vertical arm 7.

[0036] In the process of lifting the steel drum, the secondary sleeve rod 22 is fixed by the electric push rod, which will appear very weak. In the process of lifting a heavy steel drum, dangerous accidents may occur, and even the secondary sleeve rod 22 may fall off. Therefore, the left and right sides of the secondary sleeve rod 22 are provided with serrated limit grooves 24, and the serrated limit grooves 24 are provided with limit rack plates 25 on the side away from the secondary sleeve rod 22. The secondary sleeve rod 22 is limited by the cooperation of the limit rack plates 25 and the serrated limit grooves 24. When the limit rack plates 25 and the serrated limit grooves 24 cooperate, the secondary sleeve rod 22 and the main sleeve rod 21 are tightly fitted, avoiding the secondary sleeve rod 2 2, the limit rack plate 25 is slidably connected to the main sleeve rod 21, and the limit rack plate 25 is fixedly connected to the end away from the secondary sleeve rod 22 with a magnetic suction plate 26, and the main sleeve rod 21 is internally connected with an electromagnetic suction cup 27, and the magnetic suction plate 26 and the electromagnetic suction cup 27 are connected by a spring. By turning the electromagnetic suction cup 27 on and off, the electromagnetic suction cup 27 is adsorbed on the magnetic suction cup, so that the limit rack plate 25 and the serrated limit groove 24 are disengaged, which facilitates the up and down sliding of the secondary sleeve rod 22. At the same time, when the electromagnet is powered off, the limit rack plate 25 and the serrated limit groove 24 cooperate to achieve effective limiting of the secondary sleeve rod 22.

[0037] The electromagnetic suction cup 27 is slidably connected to the main sleeve rod 21, and the electromagnetic suction cup 27 is fixedly connected to a sliding piston plate 28 on the side away from the secondary sleeve rod 22. The left and right sides of the main sleeve rod 21 are fixedly connected with hydraulic chambers 29 that cooperate with the sliding piston plate 28. The hydraulic chamber 29 is fixedly connected with an oil inlet pipe 30, and the oil inlet pipe 30 is connected to an external oil supply device. The oil supply to the hydraulic chamber 29 is achieved through the oil supply device. Under the action of the hydraulic oil, the sliding piston plate 28 slides in the main sleeve rod 21, thereby achieving the adjustment of the position of the limit rack plate 25, and then achieving the limitation of the secondary sleeve rod 22, avoiding the process of adjusting the position of the limit rack plate 25 only by the electromagnetic adsorption force, and the insufficient fitting force between the serrated limit groove 24 and the limit rack plate 25, which will cause the secondary sleeve rod 22 to slide or shake slightly.

[0038] During the lifting process of the steel drum, the steel drum may shake or even rotate, resulting in unstable lifting. At the same time, during the limit clamping process of the steel drum, the lifting frame may shake, resulting in shaking of the supporting shaft rod 8 during the limit clamping process of the steel drum, thereby resulting in the inability to accurately and effectively clamp the steel drum. Therefore, the present embodiment provides a structure that ensures the stability of the lifting frame and the stability of the limit clamping process. Specifically, the lower end of the lifting frame 2 is fixedly connected to two fixed ear plates 31 symmetrically distributed front and back, and the lower end of the fixed ear plate 31 is rotatably connected to a swing arm rod 33, and the swing arm rod 33 is fixedly connected to a clamping limit frame 32 at one end away from the fixed ear plate 31. The rotation of the swing arm rod 33 drives the synchronous rotation of the clamping limit frame 32, and the swing of the clamping limit frame 32 is used to achieve effective fitting between the clamping limit frame 32 and the steel drum, thereby ensuring the stability of the lifting frame above the steel drum.

[0039] A connecting arm 34 is fixedly connected to the middle position of the swing arm 33, and the other end of the connecting arm 34 is rotatably connected to an adjusting crank 35. The two adjusting cranks 35 are rotatably connected, and during the rotation and sliding process of the two adjusting cranks 35, the two swing arms 33 are driven to slide in the opposite direction, thereby achieving effective fitting of the clamping limit frame 32 and the steel reel.

[0040] An adjusting sleeve 36 is fixedly connected to the lower end of the lifting frame 2, and a lifting sleeve 37 is slidably connected to the inside of the adjusting sleeve 36. The lifting sleeve 37 and the adjusting sleeve 36 are connected by a spring, and the lower end of the lifting sleeve 37 is rotatably connected to the adjusting crank 35. Under the action of the spring, the lifting sleeve 37 has a continuous downward force, which makes the swing arm rod 33 have a force to slide toward each other, and at the same time ensures that the clamping limit frame 32 and the steel drum are tightly fitted, thereby ensuring the stability of the lifting frame.

[0041] The clamping limit frame 32 is connected to a clamping wheel 38, and the clamping wheel 38 is provided with friction grooves. The rotation of the clamping wheel 38 facilitates the sliding and movement of the clamping limit frame 32. At the same time, the friction grooves increase the friction force and ensure stability.

[0042] The clamping wheel 38 is rotatably connected to the clamping limit frame 32, and the clamping wheels 38 on the same clamping limit frame 32 are connected via a chain transmission mechanism, and the sprocket transmission mechanism drives the clamping wheels 38 on the same clamping limit frame 32 to rotate synchronously, and one clamping wheel 38 on the same clamping limit frame 32 is connected to the adjusting motor 20 connected to the clamping limit frame 32, and the clamping wheel 38 is driven by the adjusting motor 20. At the same time, the rotation of the clamping wheel 38 ensures that the limit clamping frame can smoothly clamp and limit the steel reel, and also ensures that the clamping limit frame 32 can continue to slide downward to achieve effective clamping of the steel reel. At the same time, in the process of opening the limit clamping frame, the lifting sleeve 37 slides downward for adaptive adjustment.

[0043] The clamping limit frame 32 is fixedly connected to a limit electromagnetic plate 39 near one side of the lifting frame 2. The limit electromagnetic plate 39 is externally connected to a power supply. When the clamping limit frame 32 slides to a suitable position, the limit electromagnetic plate 39 is energized to fix the clamping limit frame 32, thereby ensuring the stability of the fit between the clamping limit frame 32 and the steel reel, thereby ensuring the stability of the lifting frame, and also ensuring the stability during the adjustment process of the supporting shaft 8 to avoid shaking and deviation.

[0044] In order to ensure that the supporting shaft 8 can smoothly extend into the axis of the steel reel to support the steel reel, the supporting shaft 8 on one side is fixedly connected to one end away from the lifting vertical arm 7 with an infrared transmitter 40, and the supporting shaft 8 on the other side is fixedly connected to an infrared receiver 41 that cooperates with the infrared transmitter 40. The infrared transmitter 40 and the infrared receiver 41 are both connected to the control module. The supporting position of the supporting shaft 8 is determined by the infrared transmitter 40 and the infrared receiver 41. After the signal can be successfully received, the supporting shaft 8 can be smoothly extended into the interior of the steel reel sleeve.

[0045] When the present invention is used, in the initial state, the distance between the two supporting shafts 8 is the largest. In the process of lifting the steel drum, the lifting frame is first transported to the lifting position, and then the clamping wheel 38 is in contact with the steel drum sleeve, and the clamping wheel 38 rotates to achieve the clamping wheel 38 and the steel drum sleeve being fitted while the swing arm 33 is opened, thereby ensuring that the steel cable is in a tensioned state and that the lifting frame and the steel drum are in a relatively stable state. After the lifting frame is adjusted to a suitable position, the infrared emission The device 40 receives the signal, and then the control module starts the double-headed screw rod 4 and the hydraulic telescopic rod 6 to adjust the distance between the lifting vertical arms 7, and extends the supporting shaft rod 8 into the interior of the steel reel. After extending into the steel reel, the double-headed adjusting screw rod 10 is started to drive the lifting cross plate 13 to make the lifting cross plate 13 rise, and then the inner wall of the steel reel is supported and clamped through the limiting clamping plate, ensuring that during the lifting process, the steel reel is in a stable state without rolling or shaking.

[0046] 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 steel rolling production line, comprising a crane body (1), characterized in that: The lower end of the crane body (1) is connected to a lifting frame (2) via a steel cable. The lifting frame (2) is internally slidably connected to two symmetrically distributed sliding threaded sleeves (3). The sliding threaded sleeve (3) is threadedly connected to a double-headed screw (4) rotatably connected to the inside of the lifting frame (2). During the rotation of the double-headed screw (4), the two sliding threaded sleeves (3) are driven to slide in opposite directions. The sliding threaded sleeve (3) is fixedly connected to one end away from the lifting frame (2) with a hydraulic telescopic rod (6). The hydraulic telescopic rod (6) is fixedly connected to one end away from the lifting frame (2) with a lifting vertical arm (7). The lower end of the lifting vertical arm (7) is fixedly connected to a steel drum clamping structure. The clamping and limiting of the steel drum is achieved by means of the two symmetrically distributed steel drum clamping structures. The steel drum clamping structure comprises a supporting shaft (8) fixedly connected to the lifting vertical arm (7); a plurality of equally circumferentially distributed limiting grooves (9) are fixedly connected to the side of the supporting shaft (8) away from the lifting vertical arm (7); a double-headed adjusting screw rod (10) is rotatably connected inside the limiting grooves (9); two symmetrically distributed adjusting threaded sleeves (11) are slidably connected inside the limiting grooves (9); the two adjusting threaded sleeves (11) are threadedly connected to the double-headed adjusting screw rod (10); the rotation of the double-headed adjusting screw rod (10) drives the two adjusting threaded sleeves (11) to slide in the opposite direction; the adjusting screw rod (10) is rotat ... rotatably connected to the double-headed adjusting screw rod (10); the two adjusting threaded sleeves (11) are threadedly connected to the double-headed adjusting screw rod (10); the rotation of the double-headed adjusting screw rod (10) drives the two adjusting threaded sleeves (11) to slide in the opposite direction; the adjusting screw rod (10) is rotatably connected inside the limiting grooves (9); the two adjusting threaded sleeves (11) are rotatably connected inside the limiting grooves (9); the two adjusting threaded sleeves (11) are rotatably connected to the double-headed adjusting screw rod (10); the two adjusting threaded sleeves (11) are rotatably connected to the double-headed adjusting screw rod (10); the two adjusting threaded sleeves (11) are rotatably connected to the double-head The upper ends of the grooved sleeves (11) are rotatably connected to a rotating crank (12), and a lifting horizontal plate (13) is rotatably connected between the two rotating cranks (12). A limit chuck (14) is fixed to the upper end of the lifting horizontal plate (13), and the end of the limit chuck (14) away from the lifting horizontal plate (13) is in an arc shape. The lower end of the lifting horizontal plate (13) is fixedly connected to two lifting limit rods (15), and the limiting groove rail (9) is fixedly connected to a limit sleeve (16) coaxially slidably connected to the lifting limit rod (15), and the double-headed adjusting screw rod (10) is connected to a screw rod driving structure connected to the supporting shaft (8).

2. The crane for a steel rolling production line according to claim 1, characterized in that: The screw drive structure comprises a rotating pinion (17) coaxially fixedly connected to the double-headed adjusting screw (10); the rotating pinion (17) is disposed on the side of the supporting shaft (8) away from the lifting vertical arm (7); a driving gear plate (18) is rotatably connected to the supporting shaft (8) and meshes with the rotating pinion (17); the driving gear plate (18) is coaxially fixedly connected to a driving shaft rotatably connected to the axis of the supporting shaft (8); the driving shaft is connected to an adjusting motor (20) connected to the supporting shaft (8); and the adjusting motor (20) is connected to a control module connected to the crane body (1).

3. The crane for a steel rolling production line according to claim 2, characterized in that: The lifting vertical arm (7) comprises a main sleeve rod (21) fixedly connected to the hydraulic telescopic rod (6), a secondary sleeve rod (22) is slidably connected up and down inside the main sleeve rod (21), and the lower end of the secondary sleeve rod (22) is fixedly connected to the supporting shaft rod (8); A strong spring is fixedly connected to the upper end of the secondary sleeve rod (22), and the other end of the strong spring is fixedly connected to the main sleeve rod (21). The secondary sleeve rod (22) and the main sleeve rod (21) are connected via a sleeve rod driving mechanism, and the telescopic length of the secondary sleeve rod (22) can be adjusted via the sleeve rod driving mechanism.

4. The crane for a steel rolling production line according to claim 3, characterized in that: The sleeve rod driving mechanism is an electric push rod structure, and the electric push rod is used to realize the telescopic drive of the secondary sleeve rod (22); The left and right sides of the secondary sleeve rod (22) are provided with sawtooth-shaped limit grooves (24), and a limit rack plate (25) is provided on the side of the sawtooth-shaped limit groove (24) away from the secondary sleeve rod (22). The limit of the secondary sleeve rod (22) is achieved by the cooperation of the limit rack plate (25) and the sawtooth-shaped limit groove (24). The limit rack plate (25) and the main sleeve rod (21) are slidably connected. The end of the limit rack plate (25) away from the secondary sleeve rod (22) is fixedly connected with a magnetic suction plate (26). The main sleeve rod (21) is internally connected with an electromagnetic suction cup (27), and the magnetic suction plate (26) and the electromagnetic suction cup (27) are connected via a spring.

5. The crane for a steel rolling production line according to claim 4, characterized in that: The electromagnetic suction cup (27) is slidably connected to the main sleeve rod (21); a sliding piston plate (28) is fixedly connected to the side of the electromagnetic suction cup (27) away from the secondary sleeve rod (22); hydraulic chambers (29) matching the sliding piston plate (28) are fixedly connected to the left and right sides of the main sleeve rod (21); an oil inlet pipe (30) is fixedly connected to the hydraulic chamber (29); and the oil inlet pipe (30) is connected to an external oil supply device.

6. The crane for a steel rolling production line according to claim 1, characterized in that: The lower end of the lifting frame (2) is fixedly connected to two fixed ear plates (31) symmetrically distributed front and back, the lower end of the fixed ear plate (31) is rotatably connected to a swing arm rod (33), and the end of the swing arm rod (33) away from the fixed ear plate (31) is fixedly connected to a clamping limit frame (32); A connecting arm (34) is fixedly connected to the middle position of the swing arm (33), and the other ends of the connecting arm (34) are rotatably connected to an adjusting crank (35), and the two adjusting cranks (35) are rotatably connected; The lower end of the lifting frame (2) is fixedly connected to an adjusting sleeve (36), the interior of the adjusting sleeve (36) is slidably connected to a lifting sleeve (37), the lifting sleeve (37) and the adjusting sleeve (36) are connected via a spring, and the lower end of the lifting sleeve (37) is rotatably connected to the adjusting crank (35); The clamping limit frame (32) is connected to a clamping wheel (38), and the clamping wheel (38) is provided with friction patterns.

7. The crane for a steel rolling production line according to claim 6, characterized in that: The clamping wheel (38) is rotatably connected to the clamping limit frame (32), the clamping wheels (38) on the same clamping limit frame (32) are connected via a chain transmission mechanism, and one clamping wheel (38) on the same clamping limit frame (32) is connected to an adjustment motor (20) connected to the clamping limit frame (32).

8. The crane for a steel rolling production line according to claim 7, characterized in that: The clamping limit frame (32) is fixedly connected to a limit electromagnetic plate (39) on one side close to the lifting frame (2), and the limit electromagnetic plate (39) is externally connected to a power source.

9. The crane for a steel rolling production line according to claim 1, characterized in that: An infrared transmitter (40) is fixedly connected to one end of the supporting shaft (8) away from the lifting vertical arm (7), and an infrared receiver (41) matching the infrared transmitter (40) is fixedly connected to the other end of the supporting shaft (8). Both the infrared transmitter (40) and the infrared receiver (41) are connected to a control module.

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