Control Method for Lifting Cylinder Lifting Position of Moving Beam of Walking Billet Heating Furnace
A billet heating and maintaining control technology, which is applied in the direction of heat treatment process control, heat treatment furnace, use feedback control, etc. The effect of entering and running deviation and improving stability
Active Publication Date: 2020-02-07
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0006] However, due to the internal leakage of the lifting cylinder of the moving beam and the drift of the neutral position of the proportional valve, during the static heating process of the steel billet, the moving beam usually slides down when the lifting cylinder is self-locking in the middle position, resulting in the billet Bend and sag during static heating
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[0025] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0026] Such as figure 1 The structure shown is the walking beam mechanism of the heating furnace applied to the lifting position control method of the moving beam lifting cylinder of the walking billet heating furnace of the present invention. The mechanism includes a lifting cylinder 1, a lifting frame 2, a translation frame 3, an inclined Rail 4, lifting wheel 5, translation wheel 6, translation cylinder 7.
[0027] The program of the method for maintaining the lifting position of the moving beam lifting cylinder of the walking billet heating furnace of the present invention is as follows: figure 2 shown. In this diagram:
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The invention discloses a method for keeping and controlling the lifting position of a moving beam lifting cylinder of a stepping steel billet heating furnace. The control procedure of the method is composed of a heating furnace moving beam lifting cylinder position keeping value acquiring unit formed by functional blocks JBSWBC01-JBSWBC03 and a heating furnace moving beam lifting cylinder position keeping and controlling unit formed by functional blocks JBSWBC04-JBSWBC09. According to the technical scheme, a moving beam can be kept at the position where the moving beam is expected to stay allthe time, the position where the moving beam waits for steel is included, the position of the moving beam of the stepping steel billet heating furnace is prevented from sliding down in the steel billet static heating process, then caused stepping deflection of a steel billet in the furnace is avoided, and the production stability is improved.
Description
technical field [0001] The invention belongs to the technical field of hydraulic transmission system control. More specifically, the present invention relates to a control method for maintaining the lifting position of the lifting cylinder of the moving beam of the walking billet heating furnace. Background technique [0002] For the walking-type billet heating furnace, the lifting and translation of the moving beam are usually driven by hydraulic cylinders, and the movement of the billet in the heating furnace is realized by the lifting, translational forward, lowering and translational retreat of the moving beam of the heating furnace, while the heating The furnace moving beam lifting stroke control adopts a single differential position control method at home and abroad, that is, when the heating furnace moving beam rises and falls, the moving beam motion control system sets a reference value and allowable deviation range for the moving beam lifting stroke (usually ±3~4mm...
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IPC IPC(8): G05D3/12C21D9/70C21D11/00
CPCC21D9/70C21D11/00
Inventor 叶光平冯昱王金来包忠东朱旭光
Owner MAANSHAN IRON & STEEL CO LTD