Casting bridge cranes are the main handling equipment for smelting workshop of steel works. They are used for conveying, pouring and hot metal charging of liquid metal in smelting process. YZS casting bridge crane, adopting main crab and auxiliary crab,and four-girder and four-rail structure, is composed of bridge, main crab, auxiliary crab, connecting traverse, trolley traveling mechanism and electric part. The main crab runs at the rails outside the bridge, and the auxiliary crab runs at the rails inside the bridge. The main crab employs the connecting transverse as the load handling device to hoist steel ladle, and the auxiliary crab,employing the hook as the load handling device, runs across under the main crab to accomplish pouring of molten steel and steel slag,and other auxiliary hoisting in coordination with the main hook.

The design lifting capacity of YZ-type casting double girder bridge crane is: 100/32 tons, 125/32 tons, 140/40 tons, 160/50 tons, 180/40 (50) tons (T), etc.

The trolley travelling mechanism and main electric equipment are installed in the girder. The girder' s electric panel room employs rock wool for heat insulation, and has an air cooler inside. To reduce heat radiation of molten steel to metal structural members, a thermal baffle is set along the span direction at the bottom of the girder.

The trolley travelling mechanism adopts four-corner drive. The crane is equipped with a special electronic scale, and there are display devices in the cab and on the bridge. The main hoisting mechanism is furnished with an over speed switch.

Foundry cranes lift molten metal and work in harsh environments with high temperatures and high dust. The working level is A7. Due to its special use environment, its design and manufacturing have special requirements. The casting crane should fully meet the requirements of various relevant standards, and the manufacturing quality and performance should be safe and reliable.

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