Four truss structure a combination of four pieces of plane truss structure into a closed space, generally in a horizontal truss paved walkway surface plate, light weight double girder crane total distribution, rigidity, but compared with other structures, size large, manufacture more complex, less fatigue, it has less production. Partial fasting truss structure similar rail box girder, a closed structure consists of four steel plates composed of, in addition to the primary web is solid web-shaped beam, but the remaining three steel plates in accordance with the design requirements into many windows form a non-inclined pole fasting trusses, the upper and lower surfaces of the horizontal truss plate lined with walkways, crane operation mechanism and electrical equipment installed in the bridge inside, lighter weight, the overall stiffness, which is a type widely used in China. Common bridge crane mainly electric drive, usually operated in the cab, there are remote control. From the weight of up to 500 tons, span up to 60 meters. Easy-beam bridge crane, also known as crane beam, its structure and composition is similar to ordinary bridge crane, from the weight, span and work rate are small. Bridge the main beam is a simple cross-section beam by a beam or other beam and plate steel composition, hand pull hoist or trolley hoist coupled with simple lifting trolley as much money double girder cranes, trolley usually in the wing-beams edge running. Can bridge the orbiting overhead, but also suspended in underpasses along the orbit, which is called the crane girder suspension cranes. Metallurgy bridge crane in the steel production process can participate in a particular process operation, its basic structure and general overhead crane similar, but lifting a small car is also equipped with special work mechanism or device. Working features of this crane is the use of frequent harsh conditions double girder crane, higher working level. 6, after the crane work should be done: (1) the crane opened at a predetermined stopping point, the car open to the cab at one end, the upper limit will be raised to empty hooked position, the controller all go to zero, cut off the power; (2) Cleaning Crane; (3) the class should have appropriate cleaning and inspection time; (4) the written record of this shift to take over the driver, the operation in question and found, to take over the driver clearly. 7. Cut the Bank crane during maintenance work to meet the maintenance staff are not allowed to leave the road. Specific reason to leave short-term need to tell maintenance personnel, in order to arrange work. 8, driving in the first whistle to start, start. Maintenance staff at work above, does not allow transmission, but not allowed to start driving. Specific reason to EMU, and maintenance personnel must be single and double girder crane hoist to fully communicate and obtain permit before moving the car, be sure to start before the whistle three times. 9, maintenance personnel working on the track, no matter how much living below or emergency, are not allowed to urge maintenance personnel, adequate communication and coordination to ensure the safety of rail-mounted double girder cranes | generous heavy (certified) | Xuancheng double girder crane provided by generous heavy machinery Co., Ltd., 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.