QDY型通用桥式起重机
QDY型通用桥式起重机是在满足GB/T14405-2011《通用桥式起重机》技术标准的基础上，根据国家质检办特【2007】375号文件要求所设计、制造；适用于铸造车间搬运、浇注融熔金属工作和装卸、搬运物料及台模使用。
本产品起重量般为5t、10t 、16/3.2t、20/5t、32/5t、50/10t，跨度为7.5～31.5m，工作级别为A7级。
主要特点：
1.本机由箱型桥架、大车运行、小车部分及电气系统所组成，其基本结构形式与QD型通用桥式起重机相同。
2.采用H级绝缘冶金起重专用电动机。
3.升降机构装设有两套独立工作的制动器（双制动)，并装设重量限制器及双重上升限位器。
4.采用铸钢滑轮和耐高温钢丝绳。
5.必要时对桥架结构进行隔热处理．其电器设备采取防粉尘和高温的防护处理。
QDY overhead crane in accordance with GB/T14405-2011 standard and the request of Office of Quality Supervision Special【2007】375 document is applicable to convey molten metal and assemble modules in foundry.
Performance data
Range of lifting load 5t、10t、 16/3.2t、20/5t、32/5t、50/10t
Range of span 7.5～31.5m
Allowed crane classification group A7
Main features：
1.The machine is composed of boxed bridge,travelling mechanism , trolley and electrical system，whose features are similar fo those of QD crane.
2. It adopts H-insulated motor especially for metallurgy crane.
3. The hoisting mechanism is equipped with two set of brakes (dual brake)which can work independently,as well as load-limiter and dual hosting-displacement limiter.
4. The pulley is made of cast steel and the rope is resistant to high temperature.
5. If necessary, special measures should be taken to protect the bridge from therma-radiated sources and eleetrical equipment from dust and high-temperature environments.
