The main parts of the crane: 1, hook group: is extract device. Note: The hook surface without cracks; hook mouth parts wear and broken pulley rim. 2, pulley blocks: two movable pulley and fixed pulley block. Note: if the surface crack; if work pulley rotating flexible, dual-beam crane wholesale, pulley rim is broken. After the pulley damaged, users often use brazing (brass water welding) or welding repair to continue using. Because of the uneven heating, double girder crane sales, the pulleys deformed and uneven hardness, can cause abnormal wear and tear of wire rope, welding quality assurance is not easy, it does not allow welding. 3, the rope: Note: broken wire, broken stocks, knotted, rust, pitting. On the roll Filled with lithium grease lubrication. 4, the drum group: a lifting mechanism for winding the rope components. Drum gear coupling disc set is a closed transmission packet is good. 5, reducer: it is the high speed of the motor, reducing the need for agencies to work speed. Common horizontal reducer ZQ, vertical reducer ZSC. Note: Check the oil level; reducer smooth operation, Dongtai double girder crane, there should be no beating, shock and severe or intermittent noise, sound evenly; and at the joint of the fastening must not loose. Crane rules 1, in strict compliance with crane safety technology. It must be done by holders of operating permits of drivers dedicated driver. Driving work before the new appointment, must be trained to organize the evaluation device. 2, should be used to understand the structure and performance of the crane, familiar with its working principle and control system, control the function of the safety devices and the correct method of operation, do careful maintenance and timely repairs. 3, the operation in violation of the right to refuse lifting crane safety items technical regulations, strictly enforce the 'do not hang ten': ① not hanging over rated negatively harsh. ② command signal is unknown; weight unknown; dim light does not hang. ③ slings and accessories bundle is not strong, does not meet safety requirements are not suspended. ④ not hanging heavy hanging direct machining. ⑤ pull Xiegua not hanging crooked. ⑥ on the work station or floating deregulation animals do not hang. ⑦ flammable items are not hanging. ⑧ fast mouth with angular object is not really hanging mat. ⑨ buried items are not hanging. ⑩ illegal command not hang. Electric double girder cranes, double girder crane Dongtai, heavy generous generous by heavy machinery Co., Ltd., Henan Province. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) strong, credible, in Zhengzhou, Henan engineering, construction crane industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving generous innovative ideas will lead into the brilliant heavy and you work for a better future!