A coil inner circle gathering device and method

Abstract

The present application relates to a kind of steel coil inner circle collection device, the device includes track base, tow chain assembly, moving trolley, lifting platform, clamping device, fixed column cantilever crane and electric control system, wherein moving trolley carries lifting platform and clamping device is powered by tow chain assembly, walk on track base by electric control system, lifting platform is elevated to the center position of steel coil, after clamping device is inserted into steel coil, fixed column cantilever crane is placed in the movable end of clamping rod with opening pressing plate, start hydraulic station and tighten the clamping cylinder in clamping device, to realize the function of steel coil inner circle misalignment collection.This device and method aim to reduce labor intensity, reduce safety hazards, while reducing production cost, improve production efficiency and yield, and adapt to different steel coil specifications.

Description

Technical Field

[0001] This invention relates to a device and method for aligning the inner coils of a steel coil, and relates to the field of steel coil production technology. Background Technology

[0002] The finished steel coils produced by the pickling unit have a misalignment problem on the inner ring. To meet user needs and on-site packaging requirements, the coils with misalignment need to be re-rolled and repaired to eliminate the misalignment. However, this process not only increases the processing cost per ton of steel but also affects delivery efficiency and may negatively impact the product yield. This problem is quite prominent. To effectively reduce production costs, improve production efficiency, and increase yield, a device and method for aligning the inner ring of steel coils were designed. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a device and method for aligning the inner coils of steel coils. This device and method aim to reduce labor intensity, minimize safety hazards, lower production costs, improve production efficiency and yield, and adapt to different steel coil specifications.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a steel coil inner ring alignment device, the device comprising a track base 1, a drag chain assembly 2, a moving trolley 3, a lifting platform 4, a clamping device 5, a fixed column cantilever crane 6, and an electrical control system 7, wherein the moving trolley 3, carrying the lifting platform 4 and the clamping device 5, is powered by the drag chain assembly 2 and moves on the track base 1 through the electrical control system 7. The lifting platform 4 raises the clamping device 5 to the center position of the steel coil. After the clamping device 5 is inserted into the steel coil, the fixed column cantilever crane 6 places the open pressure plate on the movable end of the clamping rod and starts the hydraulic station to tighten the clamping cylinder in the clamping device 5, thereby realizing the function of aligning the misaligned edges of the inner ring of the steel coil.

[0005] The clamping device, powered by a hydraulic station, includes a clamping cylinder, a clamping rod, and a pressure plate. These components (fixed and open pressure plates) tighten the inner ring of the steel coil. The clamping rod is made of 40Cr material, and the clamping position surface of the clamping baffle is lined with a polyethylene liner. The clamping cylinder has an outer diameter of Φ165, a rod diameter of Φ100, an inner hole of Φ53, and a stroke of 200mm. The hydraulic station operates at a pressure of 63MPa. The hydraulic system is equipped with a solenoid valve for directional control and a pressure-reducing valve for pressure reduction, adapting to different specifications of steel coils. Before operating the tightening cylinder, the oil pump must be started. After starting, the oil pump will automatically stop after a 2-minute delay.

[0006] The electric lifting platform uses a lifting and clamping device to adapt to the height of steel coils of different diameters, thereby adjusting the clamping rod to the center position of the inner ring of the steel coil. The main parameters of the electric lifting platform are as follows: platform size 1300x850 mm, maximum stroke 770 mm, maximum lifting capacity 2 tons, and lifting time 20-25 seconds.

[0007] The mobile trolley is primarily responsible for bearing the load of the clamping device and the lifting platform, ensuring that the clamping device can smoothly insert into or release the steel coil. The trolley has a travel distance of 3 meters and a travel speed of 10 meters per minute. The wheels are made of 45# steel and have undergone overall heat treatment. The trolley's movement is driven by a geared motor, and a mechanical limit switch is installed at the stopping position.

[0008] With a fixed-column cantilever crane, after the moving trolley carrying the clamping device inserts the steel coil, the operator uses the fixed-column cantilever crane to place the open pressure plate on the movable end of the clamping rod, ensuring it fits tightly against the edge of the steel coil. The main technical parameters of the fixed-column cantilever crane are as follows: lifting height 3000 mm, slewing radius 3000 mm, lifting weight 1 ton, and lifting speed 6.8 m / min.

[0009] The electrical control system, with its control box located next to the equipment, offers both local and remote operation modes. Each workstation is equipped with stop limit switches in both directions to ensure safe operation. The transmission and control equipment includes: a trolley drive motor, a brake motor, a hydraulic platform push rod drive motor, a clamping cylinder pump motor, a cantilever crane slewing motor, a chain hoist motor, and alarm lights. The trolley drive and brake motors enable the trolley to move and stop. The hydraulic platform push rod drive motor controls the trolley platform's lifting and lowering. The clamping cylinder pump motor starts the hydraulic pump to provide hydraulic power. The cantilever crane slewing motor and chain hoist motor provide the kinetic energy for the lifting, lowering, and lateral swinging of the load (open pressure plate). Alarm lights are mounted on the trolley to serve as a warning when the trolley is moving. The main function of this steel coil inner coil gathering device is to bring the trolley closer to the steel coil, raise the electric lifting platform to a predetermined height, and then have the trolley, carrying the clamping device, work in conjunction with the lifting platform to insert the steel coil. The operator uses a fixed-column cantilever crane to precisely place the open clamping plate onto the movable end of the clamping rod, ensuring a tight fit with the edge of the steel coil. After starting the hydraulic station, the clamping cylinder, clamping rod, and clamping plate work together to tighten the inner coil of the steel coil. This device can meet the coiling requirements for steel coils with an outer diameter range of Φ1100-Φ2100, an inner diameter of Φ610, and a width range of 800-1630, fully covering the entire range of pickled products.

[0010] A method for aligning the inner coils of a steel coil, the method comprising the following steps:

[0011] Step 1: Confirm preliminary conditions;

[0012] Step 2: Prepare a steel coil with misaligned inner edges;

[0013] Step 3: Confirm and adjust the positions of the moving trolley and the lifting platform;

[0014] Step 4: Confirm the location of the opening pressure plate and install it;

[0015] Step 5: Start the hydraulic station;

[0016] Step 6: After the operation is completed, restore the initial operating conditions.

[0017] Step 1: Confirm the preliminary conditions, specifically as follows: Before using the inner coil gathering device, confirm that the hydraulic oil in the tightening device hydraulic station is filled to the required level, the hydraulic oil in the lifting platform oil pump is filled to the required level, the gear oil in the reducer is filled to the required level, the hydraulic oil used is 46# anti-wear hydraulic oil, and the gear oil used is ISO VG150# lubricating oil.

[0018] Step 2: Preparing the steel coil with misaligned inner rings is as follows: The misaligned steel coil is lifted by a gantry crane to the saddle position, and the distance between the steel coil and the track support after the steel coil is in place is no more than 80mm.

[0019] Step 3: Confirm and adjust the position of the moving trolley and the lifting platform. Specifically, move the moving trolley close to the steel coil, adjust the height of the lifting platform to confirm that the height of the clamping rod is the same as the center height of the steel coil, and after confirmation, move the moving trolley to pass the clamping rod through the inner ring of the steel coil.

[0020] Step 4: Confirm the position of the opening clamping plate and install it as follows: Fix the clamping plate against one side of the steel coil. Use a cantilever crane to install the opening clamping plate on the other side of the steel coil. After the opening clamping plate is in place with the clamping rod, the cantilever crane chain needs to continue to descend 200-300mm. Step 5: Start the hydraulic station as follows: Start the hydraulic station, tighten the hydraulic cylinder to press the misaligned edge of the steel coil back. After pressing back, release the cylinder clamping device. The hydraulic system will automatically stop after 2 minutes.

[0021] After step 6 is completed, restore the initial working conditions as follows: lift the open pressure plate away and rotate the cantilever crane to move the cantilever crane arm away from the steel coil, move the traveling trolley back to the other side of the track, and lower the lifting platform to the lowest position.

[0022] Compared to existing technologies, this invention offers the following advantages: the device and method aim to reduce labor intensity, minimize safety hazards, lower production costs, improve production efficiency and yield, and adapt to different steel coil specifications. This technical solution effectively ensures the inner coils of the steel coil are neat and smooth, simplifies the operation process, improves packaging efficiency, and reduces the number of rework cycles. More importantly, this solution fully meets user needs. Specifically, after an abnormal finished coil comes off the production line, it does not need to be transported to another line for uncoiling and rework, thus avoiding additional transportation costs, uncoiling processing costs, and secondary quality problems arising during the uncoiling process. Attached Figure Description

[0023] Figure 1 For the track base;

[0024] Figure 2 For a walking cart;

[0025] Figure 3 It is a lifting platform;

[0026] Figure 4 For clamping devices;

[0027] Figure 5 General drawing of the inner coil gathering device for steel coils;

[0028] Figure 6 This is a flowchart illustrating the method for aligning the inner rings of a steel coil.

[0029] In the diagram: 1. Track base, 2. Cable chain assembly, 3. Traveling trolley, 4. Lifting platform, 5. Clamping device, 6. Column-mounted cantilever crane, 7. Electrical control system. Detailed Implementation

[0030] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.

[0031] Example 1: See Figures 1-6The inner coil alignment device comprises a track base 1, a cable chain assembly 2, a moving trolley 3, a lifting platform 4, a clamping device 5, a fixed-column cantilever crane 6, and an electrical control system 7. The moving trolley 3, carrying the lifting platform 4 and clamping device 5, is powered by the cable chain assembly 2 and moves on the track base 1 via the electrical control system 7. The lifting platform 4 raises the clamping device 5 to the center of the steel coil. After the clamping device 5 is inserted into the steel coil, the fixed-column cantilever crane 6 places the open pressure plate on the movable end of the clamping rod and activates the hydraulic station to tighten the clamping cylinder in the clamping device 5, thus achieving the inner coil misalignment alignment function. The main function of this inner coil alignment device is to move the moving trolley 3 close to the inner misaligned steel coil, raise the electric lifting platform 4 to a predetermined height, and then have the moving trolley 3, carrying the clamping device 5, work in conjunction with the lifting platform 4 to insert it into the inner misaligned steel coil. The operator uses the fixed-column cantilever crane 6 to precisely place the open pressure plate on the movable end of the clamping rod, ensuring a tight fit with the edge of the steel coil. After the hydraulic station is started, the inner ring of the steel coil is tightened through the coordinated action of the clamping cylinder, clamping rod, and pressure plate. This device can meet the coiling requirements of steel coils with an outer diameter range of Φ1100-Φ2100, an inner diameter of Φ610, and a width range of 800-1630, fully covering the entire series of pickled products.

[0032] Example 2: The inner ring misaligned steel coil is lifted by the overhead crane to the saddle position, and the distance between the steel coil and the track base 1 after the steel coil is in place is no more than 80mm. The moving trolley 3 is moved close to the steel coil, and the height of the lifting platform is adjusted to confirm that the height of the clamping rod is the same as the center height of the steel coil. After confirmation, the moving trolley 3 is moved to pass the clamping rod through the inner ring of the steel coil, and the fixed pressure plate is attached to one side of the steel coil. The fixed column cantilever crane 6 is used to install the open pressure plate on the other side of the steel coil. After the open pressure plate is in place, the lifting chain of the fixed column cantilever crane 6 needs to continue to descend 200-300mm. The hydraulic cylinder is tightened to press the misaligned edge of the steel coil back. After pressing back, the hydraulic cylinder clamping device 5 is released, the open pressure plate is lifted away, and the cantilever crane is rotated to make the fixed column cantilever crane 6 move away from the steel coil. The moving trolley 3 is moved back to the other side of the track, and the lifting platform 4 is lowered to the lowest position.

[0033] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.

Claims

1. A device for aligning the inner coils of a steel coil, characterized in that, The device includes a track base, a cable chain assembly, a moving trolley, a lifting platform, a clamping device, a fixed-column cantilever crane, and an electrical control system. The moving trolley, powered by the cable chain assembly, carries the lifting platform and clamping device and moves along the track base via the electrical control system. The lifting platform raises the clamping device to the center of the steel coil. After the clamping device is inserted into the steel coil, the fixed-column cantilever crane places the open pressure plate on the movable clamping rod. At the end, the hydraulic station is activated to tighten the clamping cylinder in the clamping device, thereby realizing the function of aligning the misaligned edges of the inner ring of the steel coil.

2. The steel coil inner ring gathering device according to claim 1, characterized in that, The clamping device, powered by a hydraulic station, includes a clamping cylinder, a clamping rod, and pressure plates. These components (fixed and open pressure plates) tighten the inner coil of the steel coil. The clamping rod is made of 40Cr material, and the clamping surface of the clamping baffle is lined with a polyethylene liner. The clamping cylinder has an outer diameter of Φ165, a rod diameter of Φ100, an inner bore of Φ53, and a stroke of 200mm. The hydraulic station operates at a pressure of 63MPa. The hydraulic system is equipped with solenoid valves for directional control and pressure-reducing valves for pressure reduction, accommodating steel coils of different specifications. Before operating the clamping cylinder, the oil pump must be started. After starting, the oil pump will automatically stop after a 2-minute delay. The electric lifting platform uses a lifting and clamping device to adapt to the height of steel coils of different diameters, thereby adjusting the clamping rod to the center position of the inner ring of the steel coil. The mobile trolley is primarily responsible for bearing the load of the clamping device and the lifting platform, and ensuring that the clamping device can smoothly insert into or release the steel coil. The trolley has a travel distance of 3 meters and a travel speed of 10 meters per minute. The wheels are made of 45# steel and have undergone overall heat treatment. The trolley's movement is driven by a geared motor, and a mechanical limit switch is installed at the stopping position. With the stationary column cantilever crane in operation, after the steel coil is inserted into the moving trolley carrying the clamping device, the operator uses the crane to place the open pressure plate on the movable end of the clamping rod, ensuring it fits tightly against the edge of the steel coil. The electrical control system, with the control box located next to the equipment, provides both local and remote operation modes. Each workstation is equipped with stop limit switches in both directions to ensure safe operation. The transmission and control equipment includes: a trolley drive motor, a brake motor, a hydraulic platform push rod drive motor, a clamping cylinder pump motor, a cantilever crane slewing motor, a chain hoist motor, and alarm lights.

3. A method for neatly aligning the inner rings of a steel coil, characterized in that, The method of using the steel coil inner coil gathering device according to claim 1 or 2 includes the following steps: Step 1: Confirm preliminary conditions; Step 2: Prepare a steel coil with misaligned inner edges; Step 3: Confirm and adjust the positions of the moving trolley and the lifting platform; Step 4: Confirm the location of the opening pressure plate and install it; Step 5: Start the hydraulic station; Step 6: After the operation is completed, restore the initial operating conditions.

4. The method for aligning the inner rings of a steel coil according to claim 3, characterized in that, Step 1: Confirm the preliminary conditions, specifically as follows: Before using the inner coil gathering device, confirm that the hydraulic oil in the tightening device hydraulic station is filled to the required level, the hydraulic oil in the lifting platform oil pump is filled to the required level, the gear oil in the reducer is filled to the required level, the hydraulic oil used is 46# anti-wear hydraulic oil, and the gear oil used is ISO VG150# lubricating oil.

5. The method for aligning the inner rings of a steel coil according to claim 3, characterized in that, Step 2: Preparing the steel coil with misaligned inner rings is as follows: The misaligned steel coil is lifted by a gantry crane to the saddle position, and the distance between the steel coil and the track support after the steel coil is in place is no more than 80mm.

6. The method for aligning the inner rings of a steel coil according to claim 3, characterized in that, Step 3: Confirm and adjust the position of the moving trolley and the lifting platform. Specifically, move the moving trolley close to the steel coil, adjust the height of the lifting platform to confirm that the height of the clamping rod is the same as the center height of the steel coil, and after confirmation, move the moving trolley to pass the clamping rod through the inner ring of the steel coil.

7. The method for aligning the inner rings of a steel coil according to claim 3, characterized in that, Step 4: Confirm the position of the opening pressure plate and install it as follows: Fix the pressure plate against one side of the steel coil, and use a cantilever crane to install the opening pressure plate on the other side of the steel coil. After the opening pressure plate is in place with the clamping rod, the cantilever crane chain needs to continue to descend 200-300mm.

8. The method for aligning the inner rings of a steel coil according to claim 3, characterized in that, Step 5, starting the hydraulic station, is as follows: Start the hydraulic station, tighten the hydraulic cylinder to press the misaligned edge of the steel coil back, and after pressing it back, release the oil cylinder clamping device. The hydraulic system will automatically stop after 2 minutes.

9. A method for aligning the inner rings of a steel coil according to claim 3, characterized in that, After step 6 is completed, restore the initial working conditions as follows: lift the open pressure plate away and rotate the cantilever crane to move the cantilever crane arm away from the steel coil, move the traveling trolley back to the other side of the track, and lower the lifting platform to the lowest position.

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