Method for improving rigidity of steel rolling lifting chain platform

Abstract

The invention discloses a method for improving rigidity of a steel rolling lifting chain platform, which relates to the technical field of steel rolling lifting chain platform processing, and comprises the following steps: carrying out real-time vibration monitoring on each subarea position by using vibration monitoring equipment, and carrying out analogue simulation on the platform by adopting a finite element analysis method, the influence of different structural parameters on the steel rolling lifting chain platform is evaluated, and a shear wall is additionally arranged on the steel rolling lifting chain platform in the insufficient-rigidity subarea; steel bar planting operation is conducted on the side edges of columns, the bottom of beams and the top of a foundation below an original reinforced concrete platform plate, needing to be additionally provided with a shear wall, of the steel rolling lifting chain platform, then a grid shear wall steel bar framework is manufactured and bound with connecting steel bars in the steel bar planting operation, and finally formwork erecting and concrete pouring are conducted. A shear wall can be formed to improve the rigidity of an original reinforced concrete platform of the steel rolling lifting chain platform, the vibration influence is reduced, an equipment foundation on the platform is protected, production is stable, and the maintenance time is shortened.

Description

Technical Field

[0001] The invention discloses a method for improving the rigidity of a steel rolling hoisting chain platform, and particularly relates to the technical field of steel rolling hoisting chain platform processing. Background Art

[0002] Rolling chain hoist platforms are widely used in the rolling process of steel production, particularly when lifting billets from the lower rolling line to the upper rolling line for further rolling. The operating principle of a rolling chain hoist platform is relatively simple. Once heated and flowing at a certain speed, the billets are conveyed onto the support platform. Rollers push the billets onto the supporting claws. Subsequently, by adjusting the inclination angle of the hoist chain beam and utilizing the support provided by the bridging bracket, the billets are steadily lifted. Once lifted to a certain height, they slide through the slideway of the platform onto the conveyor belt, completing the entire conveying process.

[0003] Currently, the rigidity of the steel rolling mill hoist chain platform is insufficient, resulting in large vibrations during the loading process, which can damage some bolts on the equipment on the platform. This requires time-consuming repairs and has an impact on production. Therefore, the present invention proposes a method for improving the rigidity of the steel rolling mill hoist chain platform to address the shortcomings of the existing technology. Summary of the Invention

[0004] In response to the above problems, the purpose of the present invention is to provide a method for improving the rigidity of the rolling steel lifting chain platform, by performing rebar planting operations on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab where shear walls are required to be added on the rolling steel lifting chain platform, and then making a grid shear wall steel frame and tying it with the connecting steel bars in the rebar planting operation, and finally supporting the formwork and pouring concrete, so as to form a shear wall to improve the rigidity of the original reinforced concrete platform on the rolling steel lifting chain platform, reduce the impact of vibration, protect the equipment foundation on the platform, stabilize production, and reduce maintenance time.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for improving the rigidity of a steel rolling hoisting chain platform comprises the following steps:

[0007] S1: Divide the steel rolling hoist chain platform into sections, and then use vibration monitoring equipment to conduct real-time vibration monitoring of each section to obtain accurate vibration data;

[0008] S2: Based on the acquired vibration data, the finite element analysis method is used to simulate the steel rolling hoist chain platform to evaluate the impact of different structural parameters on the steel rolling hoist chain platform;

[0009] S3: Based on the evaluation results, shear walls are added to the steel rolling hoist chain platform in the area with insufficient rigidity, and the rigidity of the steel rolling hoist chain platform is improved by using the shear walls.

[0010] Further improvement is that when the steel rolling lifting chain platform is divided into zones in step S1, the zones are divided based on the equipment of the steel rolling lifting chain platform to ensure that the equipment in each zone is located in the center position, and then vibration monitoring equipment is used to perform real-time vibration monitoring of each zone position.

[0011] Further improvements are as follows: when the finite element analysis method is used to simulate the steel rolling lifting chain platform in step S2, a finite element model of the steel rolling lifting chain platform is established using professional finite element analysis software, and then according to the actual working conditions of the steel rolling lifting chain platform, corresponding loads and boundary conditions are applied, the simulation is run, and the stress distribution and deformation of the steel rolling lifting chain platform are analyzed. Finally, based on the evaluation results, the influence of different structural parameters on the stiffness of the steel rolling lifting chain platform is evaluated.

[0012] A further improvement is that when adding shear walls to the steel rolling hoist chain platform in the zone with insufficient rigidity in step S3, the following steps are included:

[0013] S3-1: Plant reinforcement bars on the sides of columns, the bottom of beams, and the top of foundations below the existing reinforced concrete platform slab in the areas where shear walls are required;

[0014] S3-2: Use transverse and longitudinal reinforcement to create a grid shear wall reinforcement skeleton;

[0015] S3-3: Tie the mesh shear wall reinforcement skeleton to the connecting reinforcement in step S3-1;

[0016] S3-4: Support the formwork and pour the concrete, and remove the formwork after the concrete solidifies to form the shear wall.

[0017] A further improvement is that when performing the rebar planting operation in step S3-1, holes are drilled on the sides of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, and then rebar planting glue is injected into the holes, and then the connecting steel bars are installed into the holes. After the rebar planting glue is cured, the connecting steel bars are fixed.

[0018] A further improvement is that in step S3-1, before drilling holes in the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added need to be roughened so that the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab form a rough surface.

[0019] A further improvement is that in step S3-1, after holes are opened on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, a dust blower is needed to blow away the dust in the holes, and the connecting steel bars are installed in the holes by rotating them.

[0020] A further improvement is that in step S3-1, when holes are drilled on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, the hole depth is 15 times the diameter of the connecting steel bar.

[0021] A further improvement is that when the grid shear wall reinforcement skeleton is tied to the connecting reinforcement in step S3-3, the lap length of the transverse reinforcement and longitudinal reinforcement of the grid shear wall reinforcement skeleton and the connecting reinforcement is 35 times the diameter of the connecting reinforcement.

[0022] The beneficial effects of the present invention are as follows: the present invention performs rebar planting operations on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab where a shear wall needs to be added to the rolling steel lifting chain platform, and then makes a grid shear wall steel frame and ties it with the connecting steel bars in the rebar planting operation, and finally supports the formwork and pours concrete, so as to form a shear wall to improve the rigidity of the original reinforced concrete platform on the rolling steel lifting chain platform, reduce the impact of vibration, protect the equipment foundation on the platform, stabilize production, and reduce maintenance time; at the same time, the method of the present invention is simple to operate, has low cost investment, and does not affect normal production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the process of the present invention;

[0024] Figure 2 Schematic diagram of the reinforcing bar planting operation in the method of the present invention;

[0025] Figure 3 This is a schematic diagram of the steel skeleton structure of the grid shear wall of the present invention;

[0026] Figure 4 This is a schematic diagram of the binding of the grid shear wall reinforcement skeleton and connecting reinforcements of the present invention. DETAILED DESCRIPTION

[0027] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0028] Example 1

[0029] according to Figure 1-4 As shown, this embodiment proposes a method for improving the rigidity of a steel rolling hoisting chain platform, comprising the following steps:

[0030] A method for improving the rigidity of a steel rolling hoisting chain platform comprises the following steps:

[0031] S1: Divide the steel rolling hoist chain platform into zones based on the equipment on the platform, ensuring that the equipment in each zone is located in the center. Then, use vibration monitoring equipment to conduct real-time vibration monitoring of each zone to obtain accurate vibration data.

[0032] S2: Based on the acquired vibration data, the platform is simulated using the finite element analysis method to evaluate the impact of different structural parameters on the rolling steel lifting chain platform. Specifically, a finite element model of the rolling steel lifting chain platform is established using professional finite element analysis software (such as ANSYS, Abaqus, etc.). Then, based on the actual working conditions of the rolling steel lifting chain platform, corresponding loads and boundary conditions are applied, and simulations are run to analyze the stress distribution and deformation of the rolling steel lifting chain platform. Finally, based on the evaluation results, the impact of different structural parameters on the stiffness of the rolling steel lifting chain platform is evaluated.

[0033] S3: Based on the evaluation results, shear walls are added to the steel rolling hoist chain platform in the area with insufficient rigidity, and the rigidity of the steel rolling hoist chain platform is improved by using the shear walls.

[0034] Finite element simulation, based on mathematical approximation, discretizes complex physical systems into models composed of a finite number of simple elements (i.e., units). By solving for the interactions between these units, the behavior of the entire system can be simulated. This approach can handle complex geometries and boundary conditions, making numerical simulations more accurate and reliable. Therefore, when evaluating the effects of different structural parameters on the stiffness of rolling mill hoist chains, finite element simulation can provide highly accurate predictions. Traditional experimental methods require significant time and resources to test the stiffness of rolling mill hoist chains under different structural parameters. Finite element simulation, on the other hand, allows for virtual experiments to be conducted on a computer, allowing for rapid assessment of the impact of varying structural parameters. This not only reduces experimental costs but also significantly shortens product development cycles. Finite element simulation enables comprehensive performance evaluation of rolling mill hoist chains. By simulating the forces under different operating conditions, the platform's stress distribution, deformation, and other indicators can be analyzed, providing a comprehensive understanding of the platform's stiffness performance. By obtaining the stiffness performance of the steel rolling hoist chain platform, the process control of the subsequent addition of shear walls can be carried out, which can accurately improve the stiffness of the steel rolling hoist chain platform and avoid waste of resources. It can achieve the goal of constructing reasonable shear walls for different stiffness performances and adding them to the steel rolling hoist chain platform to improve stiffness.

[0035] Example 2

[0036] according to Figure 1-4 As shown, this embodiment proposes a method for improving the rigidity of a steel rolling hoisting chain platform, comprising the following steps:

[0037] According to the evaluation results, shear walls are added to the steel rolling hoist chain platform in the area with insufficient rigidity to improve the rigidity of the steel rolling hoist chain platform;

[0038] When adding shear walls to the steel rolling hoist chain platform in the area with insufficient rigidity, the following steps are included:

[0039] Rebar planting is performed on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where shear walls need to be added; during the rebar planting operation, holes are drilled on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where shear walls need to be added, and then rebar planting glue is injected into the holes, and then the connecting steel bars are installed in the holes, and the rebar planting glue is cured to fix the connecting steel bars; before drilling holes on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where shear walls need to be added, it is necessary to roughen the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where shear walls need to be added, so that the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab form a rough surface. The rough surface structure is conducive to improving the gap between the shear wall and the original reinforced concrete when the concrete is poured later to form the shear wall. The bonding force ensures the supporting stability of the shear wall; after opening holes on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, it is also necessary to use a dust blower to blow away the dust in the hole, and the connecting steel bar is installed in the hole by a rotating installation method. By blowing out the dust, it can be ensured that the connecting steel bar can be fully installed in place. The rotating installation method can ensure that the connecting steel bar is smoothly inserted into the hole and is stably fixed by the rebar glue in the hole; when opening holes on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, the hole depth is 15 times the diameter of the connecting steel bar. By reasonably setting the hole depth, it can be ensured that the structural stiffness of the original reinforced concrete platform can be guaranteed, and it can also be ensured that the added shear wall can be closely fitted with the original reinforced concrete platform to form a whole, thereby improving the stiffness of the rolling mill lifting chain platform.

[0040] The grid shear wall reinforcement skeleton is made of transverse and longitudinal reinforcements. The number of transverse reinforcements is adapted to the number of connecting reinforcements set on the sides of the columns below the original reinforced concrete platform slab, and the number of longitudinal reinforcements is adapted to the number of connecting reinforcements set at the bottom of the beam below the original reinforced concrete platform slab. The grid shear wall reinforcement skeleton has the advantage of high structural stability and can improve the shear wall stiffness.

[0041] Tie the mesh shear wall reinforcement skeleton to the connecting bars from step S3-1. The overlap length between the transverse and longitudinal bars of the mesh shear wall reinforcement skeleton and the connecting bars should be 35 times the diameter of the connecting bars. This optimally set overlap length ensures a stable connection between the connecting bars and the mesh shear wall reinforcement skeleton.

[0042] The formwork is supported and concrete is poured, and the formwork is removed after the concrete solidifies to form a shear wall. When supporting the formwork, a filling port is reserved at the top for concrete pouring, and the formwork is removed after the concrete solidifies. The subsequent maintenance also includes the maintenance of the formed shear wall.

[0043] The present invention performs rebar planting operations on the side edges of columns, the bottom of beams and the top of foundations below the original reinforced concrete platform slab where shear walls are required to be added to the rolling steel lifting chain platform, and then makes a grid shear wall steel frame and binds it with the connecting steel bars in the rebar planting operation, and finally performs formwork and concrete pouring, so as to form a shear wall to improve the rigidity of the original reinforced concrete platform of the rolling steel lifting chain platform, reduce the impact of vibration, protect the equipment foundation on the platform, stabilize production and reduce maintenance time; at the same time, the method of the present invention is simple to operate, has low cost investment, and does not affect normal production operations.

[0044] The present invention performs rebar planting operations on the side edges of columns, the bottom of beams and the top of foundations below the original reinforced concrete platform slab where shear walls are required to be added to the rolling steel lifting chain platform, and then makes a grid shear wall steel frame and binds it with the connecting steel bars in the rebar planting operation, and finally performs formwork and concrete pouring, so as to form a shear wall to improve the rigidity of the original reinforced concrete platform of the rolling steel lifting chain platform, reduce the impact of vibration, protect the equipment foundation on the platform, stabilize production and reduce maintenance time; at the same time, the method of the present invention is simple to operate, has low cost investment, and does not affect normal production operations.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for improving the rigidity of a steel rolling hoisting chain platform, characterized in that: The following steps are involved: S1: Divide the steel rolling hoist chain platform into sections, and then use vibration monitoring equipment to conduct real-time vibration monitoring of each section to obtain accurate vibration data; S2: Based on the acquired vibration data, the finite element analysis method is used to simulate the steel rolling hoist chain platform to evaluate the impact of different structural parameters on the steel rolling hoist chain platform; S3: Based on the evaluation results, shear walls are added to the steel rolling hoist chain platform in the area with insufficient rigidity, and the rigidity of the steel rolling hoist chain platform is improved by using the shear walls.

2. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 1, characterized in that: When the steel rolling lifting chain platform is partitioned in step S1, the zones are divided based on the equipment of the steel rolling lifting chain platform to ensure that the equipment in each zone is located in the center position, and then the vibration monitoring equipment is used to perform real-time vibration monitoring on the position of each zone.

3. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 1, characterized in that: When the finite element analysis method is used to simulate the steel rolling lifting chain platform in step S2, it includes using professional finite element analysis software to establish a finite element model of the steel rolling lifting chain platform, and then applying corresponding loads and boundary conditions according to the actual working conditions of the steel rolling lifting chain platform, running the simulation, analyzing the stress distribution and deformation of the steel rolling lifting chain platform, and finally evaluating the influence of different structural parameters on the stiffness of the steel rolling lifting chain platform based on the evaluation results.

4. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 1, characterized in that: When adding a shear wall to the steel rolling hoist chain platform in the zone with insufficient rigidity in step S3, the following steps are included: S3-1: Plant reinforcement bars on the sides of columns, the bottom of beams, and the top of foundations below the existing reinforced concrete platform slab in the areas where shear walls are required; S3-2: Use transverse and longitudinal reinforcement to create a grid shear wall reinforcement skeleton; S3-3: Tie the mesh shear wall reinforcement skeleton to the connecting reinforcement in step S3-1; S3-4: Support the formwork and pour the concrete, and remove the formwork after the concrete solidifies to form the shear wall.

5. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 4, characterized in that: When performing the rebar planting operation in step S3-1, it includes opening holes on the side of the column, the bottom of the beam and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, and then injecting rebar planting glue into the holes, and then installing the connecting steel bars into the holes. After the rebar planting glue is cured, the connecting steel bars are fixed.

6. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 5, characterized in that: In the step S3-1, before drilling holes in the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added need to be roughened so that the side edges of the columns, bottom edges of the beams and top edges of the foundation below the original reinforced concrete platform slab form a rough surface.

7. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 5, characterized in that: In step S3-1, after holes are opened on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, a dust blower is needed to blow away the dust in the holes, and the connecting steel bars are installed in the holes by rotating.

8. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 5, characterized in that: In step S3-1, when holes are drilled on the side of the columns, the bottom of the beams and the top of the foundation below the original reinforced concrete platform slab in the partition where the shear wall needs to be added, the hole depth is 15 times the diameter of the connecting steel bars.

9. The method for improving the rigidity of a steel rolling hoisting chain platform according to claim 4, characterized in that: When the grid shear wall reinforcement skeleton is tied to the connecting reinforcement in step S3-3, the lap length of the transverse reinforcement and longitudinal reinforcement of the grid shear wall reinforcement skeleton and the connecting reinforcement is 35 times the diameter of the connecting reinforcement.

Images