Description:
Casting bridge cranes are the main lifting and transportation equipment in the smelting workshop of steel mills. They are used for the liquid metal transfer, pouring, and hot metal mixing during the smelting process. Below 125t is generally a YZ type double beam structure. Above 125t is generally YZS type four-beam structure. YZS type adopts main and auxiliary double trolleys, four-beam and four-track structures, mainly composed of bridge frame, main trolley, auxiliary trolley, hook beam, crane operation, and electrical parts. The main trolley runs on the main girder track outside the bridge frame, and the auxiliary trolley is on the bridge frame. The inner side auxiliary beam runs on the track, and the main trolley pick-up device is a hook beam with fixed spacing.
The YZ type cast bridge crane adopts a double beam single trolley structure, which is mainly composed of bridge frame, trolley, hook beam, trolley operation and electrical parts. The main hook and fetch device is a hook beam with a fixed spacing, which is used to lift the ladle. , The auxiliary hook is used to cooperate with the main hook to dump molten steel, steel slag and other auxiliary lifting operations.
The operating mechanism of the cart and the main electrical equipment are installed in the main beam, and the air cooler is installed in the electrical room of the main beam. In order to reduce the thermal radiation of the molten steel to the metal structural parts, a heat insulation board is arranged along the span direction at the bottom of the main beam.
The cart running mechanism adopts a four-corner drive.
The crane is equipped with a special electronic scale, and there are obvious display devices in the driver’s room and on the bridge frame.
Mechanical Parts:
1.Double welding box girder, beam deflection with DIN/FEM standard
2.Steel Material: Chinese standard Q235B and Q345B
3.Trolley rail is made of high strength hot rolled flat steel (16 Mn)
4.Epoxy zinc-rich painting for one bottoms and two sides of 120μm thick, to achieve a long lifespan, beautiful appearance and good luster
5.The girder and end beam are connected together by high strength bolts to ensure the structure strength and precision of the whole machine
6.The end beams are equipped with flat wheel or double rim wheels, anti-friction bearings, buffer blocks and derailment preventing end plate
7.Maintenance walkway is located on one side of the main girder, consisting of flower pattern plate, 1050meters handrail.
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