Method for quickly updating and transforming equipment foundation of high-speed wire rod production line on line

Abstract

The invention relates to the field of metallurgical equipment, in particular to a rapid online updating and transforming method for a high-speed wire rod production line equipment foundation. The rapid online updating and reconstruction method for the equipment foundation of the high-speed wire rod production line is characterized by being implemented according to the following steps in sequence: S1, construction preparation; s2, drawing a cutting map and a position map; s3, drawing a support system diagram; s4, erecting is carried out; s5, shutdown and dismantling are conducted; s6, drilling and erecting are conducted; s7, equipment foundation block cutting is carried out; s8, equipment foundation block-by-block hoisting and transportation; s9, erecting is conducted; s10, foundation construction; s11, the supporting system is dismantled; and S12, putting a production line into production. The production efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of metallurgical equipment, and in particular to a method for rapid online updating and transformation of a high-speed wire production line equipment foundation. Background Art

[0002] With the market demand for high-quality, high-performance high-speed wire and increasingly stringent environmental protection requirements, the original high-speed wire production line is in urgent need of upgrading and transformation due to factors such as aging equipment, reduced production efficiency, increased product quality fluctuations, and rising energy consumption and costs. The high-speed wire production line is generally 300m long and mainly includes roughing and medium rolling mills, pre-finishing rolling mills, finishing rolling mills, sizing mills, STLM cooling lines, coiling stations, and supporting power supply, transmission, and control systems. The upgrade and transformation involves the protective dismantling and updating of the original equipment foundation, mechanical equipment, medium pipelines, and electrical cable replacement. Due to factors such as limited construction sites, small crane lifting weight within the span, large renovation work, complex construction procedures, and high equipment installation precision, it is generally necessary to shut down for more than 6 months for transformation, which is extremely unfavorable to production units. Every link of the online upgrade and transformation of the production line is crucial, among which the transformation of the equipment foundation is the most basic and critical link of all links. The equipment of high-speed wire production line is mainly concentrated on the 5m elevated platform. The thickness of the equipment foundation is generally 2-3m. The renovation area of ​​a single equipment foundation exceeds 300m2. During the renovation, the original equipment foundation must be protectively dismantled as a whole without affecting the foundation of surrounding equipment, and then re-poured. Generally, the equipment foundation renovation period accounts for about 60-70% of the total construction period. How to complete the equipment foundation renovation of the production line online in a short time and with high quality has become a problem that needs to be solved urgently. Summary of the invention

[0003] In order to overcome the defects of the prior art and provide an equipment updating method with high production efficiency, the present invention discloses a method for rapid online updating and transformation of the equipment foundation of a high-speed wire production line.

[0004] The present invention achieves the purpose of the invention through the following technical solutions: A method for rapid online updating and transformation of the equipment foundation of a high-speed wire production line is characterized by: implementing the following steps in sequence: S1: Construction preparation: Survey the site, familiarize yourself with the actual environment of the construction site, digest the design drawings, and use BIM modeling software to build a three-dimensional model of the existing equipment foundation and the new equipment foundation, intuitively display the structure of the renovation area, and thoroughly understand the renovation content; S2: Draw the equipment foundation block cutting diagram and rope threading hole location diagram: The drawing principle is to reduce the number of cutting blocks while meeting the cutting capacity of the diamond wire saw and the crane lifting weight within the production line span; the cutting section and rope threading hole should avoid the existing equipment foundation anchor bolts, embedded parts or rows of steel bars as much as possible to improve the cutting and drilling efficiency; the rope threading hole should avoid the existing production line equipment or obstacles as much as possible so that the rope threading hole can be drilled in advance before shutdown; the width of the equipment foundation block shall not exceed 2.2m to meet the requirements of transportation vehicles; each cutting block and rope threading hole shall be numbered, and the weight, cross-sectional size, cutting area and drilling length of the cutting block shall be listed; S3: Draw the support system diagram for the demolition stage and the support system diagram for the new construction stage. The setting principle is that the columns, main beams and diagonal braces of the support system for the demolition stage and the new construction stage are basically shared. After the demolition stage is completed, only partial adjustments are needed to the support system for the demolition stage to serve as the support system for the new construction stage. The support system is designed and verified according to the most unfavorable working conditions for the demolition stage and the new construction stage to meet the independent support capacity of each cut concrete block and the support capacity of the foundation of the new equipment. The spacing between the columns of the support system should meet the normal walking and construction needs of the construction personnel during the renovation stage. S4: Drilling of rope holes and setting up of support system: Before the production line is officially shut down, use water drills to complete more than 70% of the vertical and horizontal rope holes and more than 80% of the support system in the permitted construction area in advance; S5: The production line is officially shut down for renovation, and mechanical equipment and pipelines are dismantled; S6: Drilling of remaining rope holes and erection of support system; S7: Equipment foundation block cutting: The cutting equipment uses a hydraulic diamond wire saw, including a hydraulic system, a high-pressure oil pipe, a tensioning device, a guide mechanism and a diamond wire saw, with an operating speed of 20m / s. The block cutting follows the construction sequence of "first the two sides and then the middle, first thin and then thick". The cutting surface should be tilted 5-10 degrees to the outside to ensure that the concrete block after cutting has a "small lower opening and a large upper opening" to avoid the situation where it is difficult to remove due to an uneven cutting surface; the tensioning device and the guide mechanism of the cutting equipment must be installed stably, and the edge of the wheel must be aligned with the center line of the rope hole to ensure effective cutting of the cutting surface; the diamond wire saw is wound around the driving wheel and the auxiliary wheel in a certain order, and the direction of the wire saw should be consistent with the driving direction of the driving wheel; the lifting tension of the driving wheel is adjusted through the control panel to ensure that the diamond wire saw is properly tightened; a safety guardrail is set in front of the running direction of the diamond wire saw to avoid casualties caused by the wire saw breaking; sufficient circulating cooling water should be ensured during the cutting process to ensure the safe operation of the diamond wire saw; S8: Lifting and transportation of equipment foundation blocks: The equipment foundation blocks are all irregular rectangular blocks. Two lifting points are set on the surface of the equipment foundation. Each lifting point uses two M30 chemical bolts. Special lifting tools are used to install the lifting rings. The blocks are lifted onto a flatbed truck using an in-span crane and then transported to the construction waste dump for crushing. S9: Construction of the new equipment foundation formwork support system: Partially remodel the support system during the demolition phase, and set up 14# channel steel on the main beam as the formwork support beam; S10: Construction of new equipment foundation: Install formwork, steel bars, anchor bolts and embedded parts as required, pour the foundation of new equipment and maintain it; S11: Installation and commissioning of mechanical equipment and dismantling of support systems; S12: Production line put into operation.

[0005] The method for rapid online updating and transformation of the equipment foundation of a high-speed wire production line is characterized by: In step S3, a steel support system is used, with H200×200×8×12 or H150×150×7×10 steel used for the vertical poles and main beams, the vertical pole spacing is not greater than 1.8m, L70×5 angle steel is used for the diagonal bracing, 300×300×20 steel pads are used for the vertical pole pads, 200×200 inclined steel pads are used for the main beams and the bottom surface of the equipment foundation during the demolition stage, and 14# channel steel is used for the formwork support beams during the new construction stage.

[0006] The present invention has the following beneficial effects: 1. It can significantly reduce the in-situ dismantling of the equipment foundation of the high-speed wire production line. The construction period of the new construction can reduce the downtime; 2. Diamond wire saw block cutting technology can protect the equipment foundation and avoid damage to the surrounding equipment foundation during demolition. At the same time, it can eliminate noise pollution and dust pollution during the demolition process; 3. The steel support system can be reused. The columns, main beams and diagonal braces of the support system in the demolition stage and the new construction stage are basically shared. After the demolition stage is completed, only the support system in the demolition stage needs to be partially adjusted to be used as the support system in the new construction stage, reducing the construction period and workload during the renovation period. The steel support system has a large spacing between the poles, which can meet the normal walking and construction needs of the construction personnel during the renovation stage. The steel support system is more stable and safe, and can ensure construction safety. 4. Bevel cutting technology can ensure that the cut concrete block has a "small bottom and a large top", avoiding the situation where it is difficult to remove due to uneven cutting surface; 5. The equipment foundation blocks are divided using the process of chemical bolts + special lifting equipment, making the lifting construction more convenient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the basic BIM model of the equipment in the transformation area when the present invention is implemented. Figure 2 This is a flowchart of rapid online updating and transformation of the high-speed wire production line equipment foundation when the present invention is implemented. Figure 3 It is a schematic diagram of the basic block cutting of the high-speed wire production line equipment when the present invention is implemented. DETAILED DESCRIPTION

[0008] The present invention is further described below by means of specific examples. Example

[0009] A method for rapid online upgrading and transformation of high-speed wire production line equipment foundation, such as Figure 1 to Figure 3 As shown, the implementation process is as follows: Construction preparation → BIM modeling of production line equipment foundation → equipment foundation block cutting diagram and rope threading hole diagram → support system diagram → drilling and installation of rope threading holes, installation of steel support → production line shutdown and transformation → removal of production line machinery and pipelines → remaining rope threading holes, support system → reasonable block cutting of equipment foundation → lifting and transportation of equipment foundation blocks → installation of new equipment foundation supports (reuse of old ones) → installation of new equipment foundation formwork, steel bars, bolts, and embedded parts → pouring and maintenance of new equipment foundation concrete → installation and commissioning of production line equipment, removal of support system → production line put into use.

[0010] The specific steps are as follows: S1: Construction preparation: Survey the site, familiarize yourself with the actual environment of the construction site, digest the design drawings, and use BIM modeling software to build a three-dimensional model of the existing equipment foundation and the new equipment foundation, intuitively display the structure of the renovation area, and thoroughly understand the renovation content; S2: Draw the equipment foundation block cutting diagram and rope threading hole location diagram: The drawing principle is to reduce the number of cutting blocks while meeting the cutting capacity of the diamond wire saw and the crane lifting weight within the production line span; the cutting section and rope threading hole should avoid the existing equipment foundation anchor bolts, embedded parts or rows of steel bars as much as possible to improve the cutting and drilling efficiency; the rope threading hole should avoid the existing production line equipment or obstacles as much as possible so that the rope threading hole can be drilled in advance before shutdown; the width of the equipment foundation block shall not exceed 2.2m to meet the requirements of transportation vehicles; each cutting block and rope threading hole shall be numbered, and the weight, cross-sectional size, cutting area and drilling length of the cutting block shall be listed; S3: Draw the support system diagram for the demolition stage and the support system diagram for the new construction stage; the setting principle is that the columns, main beams and diagonal braces of the support system for the demolition stage and the new construction stage are basically shared. After the demolition stage is completed, only the support system for the demolition stage needs to be partially adjusted to serve as the support system for the new construction stage; the support system is designed and verified according to the most unfavorable working conditions in the demolition stage and the new construction stage to meet the independent support capacity of each cut concrete block and the support capacity of the new equipment foundation; the spacing between the columns of the support system should meet the normal walking and construction needs of the construction personnel during the renovation stage, and a steel support system is adopted. The uprights and main beams are made of H200×200×8×12 or H150×150×7×10 steel, the distance between the uprights is not more than 1.8m, the diagonal braces are made of L70×5 angle steel, the upright pads are made of 300×300×20 steel pads, the main beams and the bottom surface of the equipment foundation in the demolition stage are made of 200×200 diagonal steel pads, and the small beams for the template support in the new construction stage are made of 14# channel steel; S4: Drilling of rope holes and setting up of support system: Before the production line is officially shut down, use water drills to complete more than 70% of the vertical and horizontal rope holes and more than 80% of the support system in the permitted construction area in advance; S5: The production line is officially shut down for renovation, and mechanical equipment and pipelines are dismantled; S6: Drilling of remaining rope holes and erection of support system; S7: Equipment foundation block cutting: The cutting equipment uses a hydraulic diamond wire saw, including a hydraulic system, a high-pressure oil pipe, a tensioning device, a guide mechanism and a diamond wire saw, with an operating speed of 20m / s. The block cutting follows the construction sequence of "first the two sides and then the middle, first thin and then thick". The cutting surface should be tilted 5-10 degrees to the outside to ensure that the concrete block after cutting has a "small lower opening and a large upper opening" to avoid the situation where it is difficult to remove due to an uneven cutting surface; the tensioning device and the guide mechanism of the cutting equipment must be installed stably, and the edge of the wheel must be aligned with the center line of the rope hole to ensure effective cutting of the cutting surface; the diamond wire saw is wound around the driving wheel and the auxiliary wheel in a certain order, and the direction of the wire saw should be consistent with the driving direction of the driving wheel; the lifting tension of the driving wheel is adjusted through the control panel to ensure that the diamond wire saw is properly tightened; a safety guardrail is set in front of the running direction of the diamond wire saw to avoid casualties caused by the wire saw breaking; sufficient circulating cooling water should be ensured during the cutting process to ensure the safe operation of the diamond wire saw; S8: Lifting and transportation of equipment foundation blocks: The equipment foundation blocks are all irregular rectangular blocks. Two lifting points are set on the surface of the equipment foundation. Each lifting point uses two M30 chemical bolts. Special lifting tools are used to install the lifting rings. The blocks are lifted onto a flatbed truck using an in-span crane and then transported to the construction waste dump for crushing. S9: Construction of the new equipment foundation formwork support system: Partially remodel the support system during the demolition phase, and set up 14# channel steel on the main beam as the formwork support beam; S10: Construction of new equipment foundation: Install formwork, steel bars, anchor bolts and embedded parts as required, pour the foundation of new equipment and maintain it; S11: Installation and commissioning of mechanical equipment and dismantling of support systems; S12: Production line put into operation.

[0011] Figure 3 The component names corresponding to the reference numerals are as follows: 1: Hydraulic system, 2: High pressure oil pipe, 3: Tensioning device and guide mechanism, 4: Diamond wire saw, 5: Rope hole, 6: Equipment foundation, 7: Elevated platform bottom plate, 8: Steel support, 9: Inclined pad.

Claims

1. A method for rapid online updating and transformation of the equipment foundation of a high-speed wire production line, characterized by: Follow the steps below to implement: S1: Construction preparation: Survey the site, familiarize yourself with the actual environment of the construction site, digest the design drawings, and use BIM modeling software to build a three-dimensional model of the existing equipment foundation and the new equipment foundation, intuitively display the structure of the renovation area, and thoroughly understand the renovation content; S2: Draw the equipment foundation block cutting diagram and rope threading hole location diagram: The drawing principle is to reduce the number of cutting blocks while meeting the cutting capacity of the diamond wire saw and the crane lifting weight within the production line span; the cutting section and rope threading hole should avoid the existing equipment foundation anchor bolts, embedded parts or rows of steel bars as much as possible to improve the cutting and drilling efficiency; the rope threading hole should avoid the existing production line equipment or obstacles as much as possible so that the rope threading hole can be drilled in advance before shutdown; the width of the equipment foundation block shall not exceed 2.2m to meet the requirements of transportation vehicles; each cutting block and rope threading hole shall be numbered, and the weight, cross-sectional size, cutting area and drilling length of the cutting block shall be listed; S3: Draw the support system diagram for the demolition stage and the support system diagram for the new construction stage. The setting principle is that the columns, main beams and diagonal braces of the support system for the demolition stage and the new construction stage are basically shared. After the demolition stage is completed, only partial adjustments are needed to the support system for the demolition stage to serve as the support system for the new construction stage. The support system is designed and verified according to the most unfavorable working conditions for the demolition stage and the new construction stage to meet the independent support capacity of each cut concrete block and the support capacity of the foundation of the new equipment. The spacing between the columns of the support system should meet the normal walking and construction needs of the construction personnel during the renovation stage. S4: Drilling of rope holes and setting up of support system: Before the production line is officially shut down, use water drills to complete more than 70% of the vertical and horizontal rope holes and more than 80% of the support system in the permitted construction area in advance; S5: The production line is officially shut down for renovation, and mechanical equipment and pipelines are dismantled; S6: Drilling of remaining rope holes and erection of support system; S7: Equipment foundation block cutting: The cutting equipment uses a hydraulic diamond wire saw, including a hydraulic system, a high-pressure oil pipe, a tensioning device, a guide mechanism and a diamond wire saw, with an operating speed of 20m / s. The block cutting follows the construction order of "first the two sides and then the middle, first thin and then thick". The cutting surface should be tilted 5-10 degrees to the outside to ensure that the concrete block after cutting is "small at the bottom and large at the top" to avoid the situation where it is difficult to remove due to the uneven cutting surface; the tensioning device and the guide mechanism of the cutting equipment must be installed stably, and the edge of the wheel must be aligned with the center line of the rope hole to ensure effective cutting of the cutting surface; the diamond wire saw is wound around the driving wheel and the auxiliary wheel in a certain order, and the direction of the wire saw should be consistent with the driving direction of the driving wheel; the lifting tension of the driving wheel is adjusted through the control panel to ensure that the diamond wire saw is properly tightened; a safety guardrail is set in front of the running direction of the diamond wire saw to avoid casualties caused by the wire saw breaking; During the cutting process, sufficient circulating cooling water should be ensured to ensure the safe operation of the diamond wire saw; S8: Lifting and transportation of equipment foundation blocks: The equipment foundation blocks are all irregular rectangular blocks. Two lifting points are set on the surface of the equipment foundation. Each lifting point uses two M30 chemical bolts. Special lifting tools are used to install the lifting rings. The blocks are lifted onto a flatbed truck using an in-span crane and then transported to the construction waste dump for crushing. S9: Construction of the new equipment foundation formwork support system: Partially remodel the support system during the demolition phase, and set up 14# channel steel on the main beam as the formwork support beam; S10: Construction of new equipment foundation: Install formwork, steel bars, anchor bolts and embedded parts as required, pour the foundation of new equipment and maintain it; S11: Installation and commissioning of mechanical equipment and dismantling of support systems; S12: Production line put into operation.

2. The method for rapid online upgrading and transformation of the high-speed wire production line equipment foundation according to claim 1 is characterized by: In step S3, a steel support system is used, with H200×200×8×12 or H150×150×7×10 steel used for the vertical poles and main beams, the vertical pole spacing is not greater than 1.8m, L70×5 angle steel is used for the diagonal bracing, 300×300×20 steel pads are used for the vertical pole pads, 200×200 inclined steel pads are used for the main beams and the bottom surface of the equipment foundation during the demolition stage, and 14# channel steel is used for the formwork support beams during the new construction stage.

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