FEATURES OF DIAGNOSTICS OF METALLURGICAL MACHINES WITH WALKING BEAMS

Abstract

The main purpose of mechanisms with walking beams is the periodic movement of goods, which is carried out by alternately lifting vertically and moving horizontally, and at the same time contact with the load is excluded. The movement cycle includes four phases: lifting the load using movable beams, moving the load one step, lowering the load onto fixed beams, idling – moving the movable beams to their original position. In fact, it is a machine, since it includes two mechanisms (a vertical lifting mechanism and a horizontal movement mechanism) and a control device. Mechanisms with walking beams occupy the largest area in steelmaking and rolling shops of metallurgical enterprises. In the ferrous metallurgy, these mechanisms are mainly represented by three implementations: refrigerators of continuous casting machines, refrigerators of rolling mills, mechanisms for moving workpieces in the heating furnaces of rolling mills. The article is devoted to the topic of metallurgical machines with walking beams, their loading methods, location, work cycles, working conditions, and frequent malfunctions. The main methods of adapting a structure with walking beams to various operating conditions are considered, as well as the main causes of failures, are considered. The review of existing structures and design features of mechanisms with walking beams used in metallurgical enterprises is carried out. The characteristic failures and adaptation of the design of mechanisms with walking beams for operating conditions are determined.