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A Ladle Routing Method for Transportation Equipment Considering the Constraints of Production Equipment Scheduling Plan

A technology for dispatching planning and production equipment, which is applied in calculation, manufacturing calculation system, data processing application, etc. It can solve problems that affect the smooth operation of steelmaking production, logistics blockage, molten steel freezing, etc., and achieve good reference value and field application effect Good, less useless transport time effect

Active Publication Date: 2021-09-17
SHENYANG INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the tapping schedule relying on manual scheduling only has the start time of continuous casting and the end time of converter tapping. The dispatcher does not have an intuitive and perceptual understanding of the execution results, which may easily cause logistics blockage or idle equipment, and even cause molten steel to freeze. , continuous casting and pouring, affecting the smooth operation of steelmaking production in steelmaking plants

Method used

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  • A Ladle Routing Method for Transportation Equipment Considering the Constraints of Production Equipment Scheduling Plan
  • A Ladle Routing Method for Transportation Equipment Considering the Constraints of Production Equipment Scheduling Plan
  • A Ladle Routing Method for Transportation Equipment Considering the Constraints of Production Equipment Scheduling Plan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0137] There are 7 cranes and 9 trolleys on site. The analysis of determining the ladle path strategy is as follows:

[0138] (1) The ladle plan at the time of full ladle has been programmed, and the ladle transportation that will occur will be obtained according to the route and time of the scheduled steel delivery plan (the work that causes the position of the ladle to move is considered as ladle transportation). Obtain the starting point S and the ending point T of ladle movement according to the predetermined steel tapping sequence plan, and search for the basic path set φ to judge whether it can be reached.

[0139] (2) According to the equipment status and agreement, delete unavailable path nodes to obtain the available path set φ′. If the starting point S and the ending point T can be directly reached, go to step (8), otherwise go to step (3).

[0140] (3) According to the steel tapping plan and ladle plan, decompose the available path into several ladle operation int...

Embodiment 2

[0220] The initial data is described as follows: the production equipment scheduling plan contains 3 pouring times, and each pouring time includes 4 heats, that is, J 1 =J 2 =J 3 =4. The heat processing sequence sets of the 3 pouring times are respectively Among them, furnace number L 11 , L 12 , L 21 , L 22 , L 23 , L 31 Ladle routing has been programmed.

[0221] Step1: Initialize the heat set Φ to be empty. Obtain all the heats L currently produced through the production equipment scheduling plan ij (i=1,2,3; j=1,2,...,N i ) into the set Φ, as shown in Table 1.

[0222] Table 1 Casting plan

[0223]

[0224] Step2: Initialize the transport interval set Ψ to be empty, for the heat L in the set Φ ij (i=1,2,3; j=1,2,...,N i ) According to the heat L ij Total number of operations from converter to continuous casting process Divide the transportation interval and put it into the set Ψ;

[0225] Step3: Remove the transportation interval set Ψ={ψ 1 , ψ 2 ...

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Abstract

The invention discloses a method for preparing ladle routes for transportation equipment considering the constraints of production equipment dispatching plans. The minimum and the minimum transport time are performance indicators; the weight of the ladle on the path is greater than the weight of the ladle full of molten steel, the transportable time of the crown on the path is within the range specified in the furnace plan, the maximum speed of the crane and the furnace plan. The available path length range and the temperature drop of molten steel transported in the path do not exceed the specified temperature range of the furnace process as constraints; the path of ladle transportation is used as the decision variable, and a mathematical model of the problem is constructed; a ladle path heuristic based on multiple priorities is designed Formula preparation method; on the basis of determining the plant layout and furnace schedule, determine the ladle route priority according to the importance of performance indicators and sort the available routes, and decide the ladle transportation route.

Description

technical field [0001] The invention relates to the field of ladle route preparation, in particular to a method for preparing ladle route of transportation equipment considering the constraint of production equipment scheduling plan. Background technique [0002] After the ladle receives molten steel in the converter, it goes through the slag removal station (some molten steel does not go to the slag removal station), and then goes to the refining equipment for refining treatment; Or the molding station is ready for casting; after casting, the ladle is dumped to the corresponding slag dumping station; after the slag dumping is completed, the empty ladle is transported to the tilting table for inspection and treatment of the Ar blowing hole, nozzle, slide plate, etc. of the ladle . Check that there are several destinations for the processed empty ladle, directly go to the converter to receive molten steel, or go to the fast drying station to wait for receiving molten steel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/04
CPCG06Q10/0637G06Q50/04Y02P90/30
Inventor 庞新富姜迎春李海波刘炜田卫华于宏涛张玉艳车震海徐雪霏
Owner SHENYANG INST OF ENG
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