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Bridge crane metallurgical forging

Bridge cranes metallurgical forging are designed to work in press-forging shops, where they provide feeding and turning of workpieces in the process of forging on presses. The lifting capacity of the forging crane is characterized by the sum of the masses of the workpiece itself and the devices used to grip the workpiece.

The forging crane consists of a main and an auxiliary carriage, which move respectively along the main and auxiliary axles, connected by articulated couplings. In this case, the mechanisms for moving the forging cranes are installed on the main bridge. A forging tilter is attached to the hook of the main trolley, which, with the help of an articulated chain, supports the workpiece during the forging process and ensures its rotation around the horizontal axis.

The pivot chain supports the chuck with the ingot journal fixed in it. Since the mass of the processed ingot is significant, the chuck has a large length. An annular counterweight is installed at the end of the chuck, which is attached to the auxiliary hoist hook using a chain.

The forging process itself is carried out by the upper die of the press. With each impact of the upper striker, the workpiece is displaced downward by half the stroke of the upper striker. In this case, together with the workpiece, the tilting chain is also shifted down. With a fixed counterweight, the tilting chain has less displacement than the workpiece.

Forging cranes can move the workpiece in various ways: using a chuck, without a chuck or in a frame.

With the support of the workpiece with the help of a chuck, a load is created on the tilting chain many times higher than the weight of the workpiece. This is due to the cantilever position of the workpiece relative to the suspension points. Therefore, as a rule, the chuck is used when machining short workpieces.

Since the forging crane inevitably receives technological forces from the press or hammer during forging, great attention is paid to reducing dynamic overloads in its design.


For recommendations on the selection of the appropriate parameters of the metallurgical crane to Guminyuk Grigori +38 050 381-52-70