(9) for lifting less than 50% of the nominal weight of the object, allowing the simultaneous operation of both institutions; hanging above the rated from 50% by weight of the object fixed bridge crane, only can an agency action. (10) has a main and auxiliary hook bridge crane, do not rise or fall main and auxiliary hook (special exception) at the same time. (11) allowed or hammering and welding work on the object to be lifted the following items (when support can). (12) must be after a power outage and when power switches wears a sign the job before check-ups or carry out maintenance work. If you must live working, there must be security measures to protect the electric double girder bridge crane, and a special care. (13) can not just throw things down from the car. (14) limit switches and interlock protection device should always check. (15) is not allowed to touch the limit switch as a parking solution. When there is a problem (16) lifting the brake, do not allow lifting heavy loads. Types and causes of the accident analysis of common cranes in crane use, there is a certain security risk, there will occur such as accidents. Because cranes are high-altitude operations crane, there is a certain risk. Perhaps there will be a variety of reasons lost accident. It will result in casualties and property losses. Now I am here to tell you that maybe analysis Lost accident type and causes. In modern construction industry electric hoist bridge crane, crane is playing an increasingly important role. Whether the construction of aerial work or the ground, everywhere you can see its posture. While the crane played a significant role, but they sometimes bring to the lives and property of the people a lot of security risks. For example, it is the most common accident caused by crane lost. Electric double girder bridge crane _ generous heavy (certified) _ Hekou Bridge Crane Co. provided by generous heavy machinery in Henan Province. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) is Zhengzhou, engineering, construction cranes leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In heavy generous leadership with the staff warmly welcome all inquiries negotiations to create a better future for heavy generous.