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 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 overspeed switch.

YZS Four Girder Ladle crane is composed of boxed bridge frame, hook, crane travelling mechanism and electric system. The main hook employs a load tool as the lifting device to hoist steel ladle, the auxiliary hook cooperate with the main hook to accomplish pouring of molten steel and steel slag, and other auxiliary hoisting. Also we can choose the suitable speed under the customer requirement.The main structure of four beam foundry crane is designed with 4 girders and 6 rails. The highlights of this crane are integral processing technology and secondary assembly technology. For the first time assembly, the welding components sizes are fixed and adopt flat position welding to ensure the quality of welding seams; and the secondary assembly is to release welding stress before the integral processing of the bridge to ensure the stability and accuracy of product process precision. The two-times assembly technologies could maximally ensure the precision of gauge, diagonal and span, as well as users' site installation.During manufacture and installation, we have obtained valuable experiences to lay the foundation for manufacturing crane with more technology and complex structure.

Working condition:

1.Working tempreture:-10~+60°C,

2.Work class:A7,

3.Power Source:3ph,380V,50HZ or other under customer requirement.

Safety feature:

1. Overload protection in the event of overload, the hoist unit switches off and only the lowering motion is possible

2.Long and cross travel limited by means of preliminary and final limit switches or Wireless anti-collision device

3.Anti-falling protection for the Three-in-One electric motor of trolley and crane prevents from accidental falling

4.Safety hook latch used for avoiding the lifted material out off from the hook

5.Voltage lower protection system

Features

1.Very stable because of two lifting point on hanging beam of ladle hook through wirerope pulley.

2.Very very safty to lift because every one hanging beam pulley have two pcs of wirerope to avoid the risk happened once one pc

of wirerope damaged.

3.Anti high temperature.

4.Capacity is 125/32tons and up.

5.Two sets of brake for each lifting point and 4sets of brake for the main lift.

6, Emergency stop system

7, Over current Protection

8, Short-circuit Protection

9, Phase sequence protection.

10, High protection level IP54 IP55.

11, Zero position protection.

12, Voltage loss protection.

13, Current overload protection.

14, Two carts for two lift, main lift cart is up, aux lift cart is below, to finish the heavy duty working, and could aux hook

could be on left and right of main hook.