Transport equipment steel ladle path compilation method of considering production equipment scheduling plan constraints
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A technology for scheduling planning and production equipment, applied in computing, manufacturing computing systems, instruments, etc., can solve the problems of continuous casting and pouring, affecting the smooth operation of steelmaking production, and idle equipment.
Active Publication Date: 2017-11-28
SHENYANG INST OF ENG
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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 exe
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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 transport equipment steel ladle path compilation method of considering production equipment scheduling plan constraints. According to the method, indexes that a steel ladle transport path is shortest, lifting and laying frequency is minimum, interval time between two successively adjacent steel ladles in the same path is longest, a steel ladle transport temperature drop is minimum, and transport time is minimum are taken as performance indexes, conditions that the loading weight of a crown block on the path is greater than the weight of the steel ladle laden with molten steel, transportable time of the crown block on the path is in a specified range of a furnace charge plan, a path length is in an available path length range determined by the maximum speed of the crown block and the furnace charge plan, and a temperature drop of the transported molten steel in the path does not exceed a specified temperature range of a furnace charge process are taken as constraint conditions, steel ladle transport paths are taken as a decision variable, and a mathematical model of the problem is constructed; the multi-priority-based heuristic compilation method of the steel ladle path is designed; and steel ladle path priority is determined and the available paths are sorted according to importance degrees of the performance indexes on the bases of the layout of a plant area and the furnace charge plan, and the steel ladle transport path is decided.
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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