QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7

QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7

QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7 is composed of box bridge, hook, crane traveling mechanism and electrical system. The main hook uses a load tool as a lifting device to lift the ladle, and the auxiliary hook cooperates with the main hook to complete auxiliary lifting such as the pouring of molten steel and steel slag. Various speed control systems with 1:10 speed ratio are used for main mechanisms such as lifting, trolley traveling and crane traveling. The appropriate speed can also be selected according to    customer requirements.

 Main Features of QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7:

Working condition:
1．The power of crane is three—phase AC；rated frequency is 50HZ；rated voltage is 380V；
2．The temperature of working environment is-10~+60℃；
3．The relative humidity is no more than 50％ when the temperature is+40℃；
4．If the requirements are more than above-mentioned,it shall carry out the requirements in the purchase contract as the user asks．
 

Safety feature:
A. Overload protection, in the case of overload, the lifting device is closed and only descending movement can be carried out restrict long-distance and lateral travel through preliminary and final limit switches or wireless anti-collision devices
B. Three-in-one motor fall protection for trolley crane to prevent accidental fall
C. All movements can be closed by the emergency shutdown switch of the control station activated by the main contact
D. High-quality long load-bearing polyurethane material buffer is fixed at the end of the trolley and crane to prevent overtravel
E. The safety hook latch is used to prevent the material being lifted from falling off the hook
F. Sound and light alarm device to notify people near the vehicle
G. Rainproof cover for outdoor crane lifting mechanism, electric cabinet and driving mechanism
H The protective grounding conductor is installed as standard
I. Voltage drop protection system
J. Current overload protection system

Design standards
1.Overhead crane and gantry crane manufacturing and tolerances of rail installation GB/T10183-2005
2.Crane test specification and procedures GB/T5905-1986
3.Crane electric control equipment JB/T4315-1997
4.Important application wire rope GB8918-2006
5.Carbon structure steel GB/T700-2006
6.Low alloy high strength structure steel GB/T1591-2008
7.Welding joint radiographic inspection standard JB928-1994
8.Steel welding joint manual ultrasonic flaw detection way GB11345-1989

Product Structure



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