Ladle Overhead Bridge Crane

Ladle overhead crane is designed for transporting, pouring and charging hot metal in the process of smelting liquid metal, etc.

According to the crane structure, the ladle overhead cranes can be classified into Double Girder Double Rail Ladle Cranes, Four Girder Four Rail Ladle Cranes, and Four Girder Six Rails Ladle Cranes. The front two types are used for lifting middle and large scale ladles, and the latter one is used for extremely large scale ladles. DQCRANES is capable of offering customized ladle overhead crane without lifting capacity limitation.

√ Widely used in the smelting industry, such as steel mill.
√ Span Length: 7.5~31.5 m.
√ Lifting Capacity: 5~74 ton.

QDY hook bridge casting crane is mainly used for lifting molten metal in metallurgy, casting and other places. The working level of the whole machine is A7, and a heat insulation layer device is added at the bottom of the main beam. Other places for lifting molten non-metallic materials and lifting hot solid metal can also be used for reference.

• Double sets of independent action brakes is installed to the lifting mechanism.
• Heavy hammer and rotary lifting position limiters is installed and down position limiter will be installed when crane hoisting height is more than 20 m.
• Over speed protection equipment is stalled.
• Fault protection devices, such as, positive and negative contactor is installed to prevent dangerous in case of electricity power off.
• Insulating layer is installed at the bottom of main girders to prevent molten steel thermal radiation to ensure the long serving life of main girders.
• Special designed metallurgy motor is used, with insulation class H level, and motor protection grade IP54.
• Cast steel pulley is used to ensure the safety and long working life.
• Steel core wire rope is used, which is suitable for high temperature environment with the safety factor≧7.1.
• High temperature resistant cable is used for the power supply of trolley.
• Thermal insulation layer and air conditioning is equipped to the cabin.

Mechanism Parts

• Double girder, welding box beam, camber meet national standard;
• Adopt high quality carbon steel, Q235B or Q345B; (similar as Fe37 or Fe52);
• Main welding submerged are welded automaticly, nondestructive flaw detection
• The trolley is consisted with motor,reducer, brake, coupling, the wheel, drum
• No asbestos brake pad or brake block, insert the card installed,safe and reliable .
• The speed reducer has hard-toothed surface, compact structure, durable
• End girder is matched with rail buffer and rail clearance device.
• Crane protection grade is IP54 or IP44, F grade insulation
• Brake effectively, and long service life

Electric Parts

• Electric box layout is reasonable, easy to repair
• Security trolley line or angle steel trolley line
• External cable are equipped with mark line number
• Trolley moving' power is supplied by flat cable
• And the conductor is I steal or C shape sliding line.
• Safe touch line conductive rate is high, low pressure,
• Set electric taxi speed is high.
• Lifting and crane can be independently controlled, also can run separately or together.
• Sliding smooth, and beautiful outlooking.

Protection Devices

• Set the trolley trip spacing device, anti-collision device
• Audible and visual alarm device
• And set platform, covery and protective covers and barriers.

Control Mode

Ground control and cabin control

• Special cabin for bridge crane or capsule driver room, open vision, comfortable operation. The cable have open style, close style,can fixed on left or right, the open direction include end open,side open or top open, the cabin has special small room and the capsule cabin
• Ground control has pendant control and remote control, do not need to set up special driver
• Users can choose as you need

Optional Function

• All the mechanism speed regulation is 1:10 or bigger
• Overload limiter and alarm display, and the load of weighing and display
• Height limiter device
• The change between main hook and aux hook on single trolley
• Central lubrication
• PLC controlling and accident testing, record display and typing system

QDY bridge crane is mainly used for lifting molten metal in metallurgy, casting and other places.