Four Girder Casting Crane
The metallurgical overhead crane (hereinafter the crane) is dedicated lifting equipment for metal smelting environments. It carries materials, pours and tilts molten metal intermittently and repeatedly during smelting, with vertical lifting plus longitudinal and transverse travel. Load-handling devices are gantry-type spreaders or hooks. Duty classes A6–A8. The crane uses a four-girder, four/six-rail twin trolley arrangement: the main trolley carries a two-point fixed gantry-type plate hook and the auxiliary trolley a forged hook, each running on its own rails, so molten metal can be transported and the ladle tipped, as well as general loads handled.
Type test specification: YZS
Type test product name: Metallurgical Overhead Crane
Advantages & features
- 01
The control console has a PLC module and HMI touchscreen with a WLK master controller: distinct feel, clear positions, zero-position self-return and locking.
- 02
Dual protection prevents the hook from over-travelling: a rotary limit switch (adjustable mechanical memory that counts drum revolutions to control the upper and lower limits, with two-stage protection) and a heavy hammer limit device (when it trips, the main contactor opens and the hoist can only lower).
- 03
Key structural parts such as the main and end girders have heat insulation protection and withstand radiant heat, ensuring stable long-term operation in high-temperature shops.
- 04
Excellent resistance to harsh environments: finite element analysis optimises the load distribution in the main and end girders for outstanding rigidity and deformation resistance. The crane is fitted with a safety monitoring system and PLC plus inverter communication control throughout; load-bearing members are designed through precise finite element analysis, so the equipment runs more smoothly.
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