Foundry bridge cranes are the primary lifting and transportation equipment in steel mills’ smelting workshops, used for operations such as transferring liquid metal, pouring, and adding molten iron during the smelting process. Cranes under 125t typically feature a YZ-type double-girder structure. Cranes over 125t typically feature a YZS-type four-girder structure. The YZS-type utilizes a four-beam, four-track, dual-trolley design. It primarily consists of a bridge, main trolley, auxiliary trolley, hook beam, trolley travel, and electrical components. The main trolley operates on the main girder track outside the bridge, while the auxiliary trolley operates on the auxiliary girder track inside the bridge. The main trolley’s pickup mechanism utilizes fixed-spaced hook beams.
Product Features
- Casting bridge cranes are the primary lifting and transportation equipment in steel mills’ smelting workshops, used for operations such as transferring liquid metal, pouring, and adding molten iron during the smelting process. Those below 125t typically feature a YZ-type double-girder structure. Those above 125t typically feature a YZS-type four-girder structure.
- The YZS type adopts a main and auxiliary double trolley, four-beam four-track structure, and is mainly composed of a bridge, a main trolley, an auxiliary trolley, a hook beam, a trolley operation and an electrical part. The main trolley runs on the main beam track outside the bridge, and the auxiliary trolley runs on the auxiliary beam track inside the bridge. The main trolley’s picking device is a hook beam with a fixed spacing, which is used to lift the ladle. The auxiliary trolley runs under the main trolley, and the picking device is a hook, which is used to cooperate with the main hook to dump molten steel, slag and other auxiliary lifting operations.
- The YZ type casting bridge crane adopts a double-beam single trolley structure, which is mainly composed of a bridge, a trolley, a hook beam, a trolley operation and an electrical part. The main hook picking device is a hook beam with a fixed spacing, which is used to lift the ladles. The auxiliary hook is used to cooperate with the main hook to dump molten steel, slag and other auxiliary lifting operations.
- The trolley mechanism and main electrical equipment are installed in the main beam, and the main beam electrical room is equipped with a cooling fan. To reduce the heat radiation of molten steel to the metal structural parts, a heat insulation board is installed at the bottom of the main beam along the span direction.
- The trolley running mechanism adopts four-corner drive.
- The crane is equipped with a special electronic scale with obvious display devices in the driver’s cab and on the bridge.
