Control system and method for hoisting of slabs in heat holding furnace in slab yard

Abstract

The invention relates to a control system and method for hoisting of slabs in a heat holding furnace in a slab yard. The control system comprises a clamp shaking detection system and a heat holding furnace edge interference warning system, wherein the detection system comprises a laser sensor and a laser reflection device for reflecting a signal sent by the sensor; the sensor at least comprises an output interface which can output different signals according to the condition whether a reflection signal is received or not, and the interface is connected with a controller; the sensor is arranged at the relative static position of a crane; and the laser reflection device is arranged at the relative static position of a clamp. The warning system comprises another set of laser sensor and laser reflection device; correspondingly, the laser sensor and the laser reflection device are arranged on the opposite sides of an entry of the heat holding furnace; in the case of no barrier between the laser sensor and the laser reflection device, the signal emitted by the sensor can be reflected by the laser reflection device; and the laser sensor is at least provided with an output interface which can output different signals according to the condition whether a reflection signal is received, and the interface is connected wiht another controller.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to a control system and a control method based on hoisting and transporting slabs in a holding furnace of a slab storehouse in a steel factory. Background technique [0002] The holding furnace is a common equipment in the slab warehouse of the steel factory. Generally, in order to achieve high efficiency and low consumption of the holding furnace, the design size of the holding furnace will follow the principle of maximizing space utilization when designing the holding furnace, which will make the holding furnace The size between the slab stacks is smaller than the size between the slab stacks on the ground. Due to the fact that the slabs are often in and out of the holding furnace, although during manual lifting, the crane operator can make judgments with the naked eye to prevent the slab from rubbing against the holding furnace wall and damaging the insulation materia...

AI Technical Summary

Problems solved by technology

When using an unmanned crane for automatic lifting, although the positioning accuracy of the crane is much higher than that of manual positioning, taking the storage methods of slab warehouses in most domestic steel mills as an example, there are various storage methods. However, all methods cannot guarantee the centering of all slab center points during storage

Therefore, before the slab needs to be clamped into the holding furnace, due to the lack of center positioning during clamping and the shaking of the clamp under abnormal conditions, the slab will shake unexpectedly during the lifting process; The slabs hung during the furnace will rub against the wall of the heat preservation furnace, which may cause damage to the heat preservation material of the side wall of the heat preservation furnace, affect the heat preservation effect of the heat preservation furnace, and cause major accidents such as falling slabs and damaging equipment.

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