qd-type bridge crane, Xinxiang qd type gravity provided by the Henan Province, Henan Crane Co. gravity. Road Zhiyuan, temper forward. Gravity Henan Province Crane Co. (www.zlqzj.com.cn) strives to be and you win, symbiosis, strategic partners to move forward, the more determined to become the machining of the most influential business, and you leap together to succeed ! Operation Crane Co., Ltd., Henan Province, the gravity of this large-scale production of QD crane machinery and equipment, should by highly trained professionals are. But even matter how skilled operators can be sure will not be out of some mistakes, for example, when the operation will be stayed oblique hanging qd type hook bridge crane, lifting equipment so that the center of gravity is not vertical, which may not exist safety factor. So why is there such blunders? When the operator stayed hanging oblique, straight from the ground to lift weights, ropes and on the ground will form an angle, at this time if the force is divided into horizontal and straight direction qd type, when it increased to a certain extent, yes, straight lifting will produce at full capacity, the situation is serious, it could result in cracking of the crane wire rope. Such sudden weight will reduce the gravitational acceleration generated can be imagined, this will have the construction site and the operator will cause a great threat. And oblique lifting weights will make the center of gravity shifted, staff and other objects telescoping accident occurred is not impossible. So again, using a large crane, they must pay special attention to, do not hang stayed oblique. Especially in the case of goods not tied, accidents can easily happen, so need to go before lifting cargo insurance is tied, which is also a part of the work can not be ignored. Lifting objects must first be cleaned and checked to ensure that the goods can not be hanging appeared to be squeezed, buried frozen, etc., with the tubes, lines are wrapped, causing overloading are also banned. If lifting objects are assembled from various sections, be sure to lock their parts or tied securely, different shapes or sizes of objects with no special bundle tied up hanging can not be mixed, to prevent accidents. Even if we should pay attention has been bundled, tied parts polished smooth to prevent damage to the sling hanging objects or objects during slippage. If you are lifting heavy objects or large objects should be added to induce qd rope crane design standards, if there are unforeseen circumstances remedial measures to prevent accidents. Double girder overhead crane main parameters: Starting weight: 5 to 10 tons, 16 / 3.2 ~ 50/10 tons, 75 / 20-100 / 20 tons, 100/32 t 125 / 30-250 / 50 tons, 300/40 ton, 350/75 tons, 400/80 tons, 600/150 t Span: 10.5 to 31.5 meters, 13 to 31 meters. Lifting height: 6 to 22 meters. Advantages 1. Girder with high quality steel Q235 or Q345. 2. Motor protection class IP54, F class insulation, with overload protection device. (Optional) 3. Gear reducer, using helical gears, lubrication can be done automatically. 4. Operational control crane cam control, the cab driver, the vehicle moving qd double girder cranes, easier control of the cargo position clear. 5. Higher operating level: A5 ~ A7, work closely to meet customer demand. 6. The speed with frequency control, so that goods safer and more precise movement and landing. Security 1. From the weight of limiter 2. Polyurethane buffer 3. Travel limit switch 4. Voltage protection function 5. Emergency Shutdown System 6. Height limiter