Henan Mine Crane Co.,Ltd.
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QDY type bridge foundry crane with hook is mainly used at the place where the molten mental is lifted. The QDY type casting crane generally adopts the form of double girder single trolley, the main girder is a box-shaped structure, the normal rail, the bridge has double main girder and double end girder, as well as walking platform and walking platform railing. When using aerial operation, there are inclined ladders connecting from the driver's cab to the main beam.The working class of the complete machine is A7, its weight is less than 75 tons, and thermal ---protective coating is added at the bottom of the main girder.
| QDY PK QD | |||
| 序号 serial | 项目Item | QDY | QD |
| 1 | 环境温度 ambient temperature | -10~60'C | -25~40'C |
| 2 | 隔热防护Thermal protection | 1. The driver's cab must be able to keep warm, with a cooling fan or air conditioner in the room, and a non-conductive rubber sheet should be laid on the ground; 2. The bottom of the electrical room is insulated, the indoor temperature cannot exceed 45'C, and the room is equipped with a cooling fan or air conditioner; 3. Motors with H-class insulation; 4. There is a reliable heat insulation device under the lower flange plate of the crane beam, and the movable pulley wound at both ends should be provided with a protective cover; 5. Electrical equipment and cables: use flexible cables, high temperature cables. | No special requirements |
| 3 | 适用范围Scope of application | It is mainly used for lifting and transporting molten metal in smelting workshop, rolling and other hot processing workshops for lifting and transporting hot items (melting non-metallic objects and solid metals whose temperature is lower than that of molten metal), and can also be used for machinery manufacturing, metal structure, assembly, etc. The work level of continuous production such as workshops and warehouses is busy with lifting and loading and unloading in busy places | According to the busyness of use, it is divided into two working systems: intermediate and heavy. The intermediate is suitable for hoisting and loading and unloading in workshops and warehouses such as machinery manufacturing, metal structure, and assembly. Heavy grade is suitable for smelting workshops and handling work involved in continuous production |
| 4 | 工作级别working class | A7 | A3~A6 |
| 5 | 安全保护装置Safety protection device | 1. Single motor double brake; 2. The main hoisting mechanism of casting cranes larger than 75 tons on the main production line should have two sets of drive systems. When one set of drive systems fails, the other set of drive systems should complete a working cycle under the rated weight; 3. The hoisting mechanism should have a double interlock protection device limit for the lifting limit position, and a lower limit position limiter should also be provided for cranes with a lifting height greater than 20 meters; 4. For the hoisting mechanism for hoisting liquid metal and other dangerous goods, at least two brakes shall be provided for each independent driving device; 5. When the crane is equipped with a weighing device, there should be obvious display devices in the appropriate positions of the driver's cab and the main beam; 6. The part of the crane that is directly exposed to high temperature radiation should be provided with heat insulation boards or heat insulation walls | No special requirements |
| 6 | 主要零部件以及电气元件 Main parts and electrical components | 1. Forged wheels or rolled wheels are used for wheels, and cast wheels cannot be used; 2. The main hook adopts laminated hook; 3. Adopt casting pulley; 4. When using casting reel, when using welding reel, the material should not be lower than Q235C or Q345 5. The resistor should have adequate ventilation and heat dissipation measures. | No special requirements |
| 7 | 供电方式Power supply method | Current collector-slider when powering the system | Current collector for double beam hoisting power supply system |
| 8 | 电器安装方法Electrical installation method | The large tonnage of the foundry crane is electrically installed inside the main beam | Electrical stacking on the walkway |