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When people often use the crane in equipment handling process, use the crane operator, crane hoists shall be the oblique oblique, that hoisting rope hanging objects through the center of gravity and perpendicular, that allowed the oblique oblique hanging a lot of people In this regard some questions, why not oblique crane hanging it? 1, it is possible to overload the crane oblique hanging on the assumption that weight lifting objects from the floor for the Q, vertical lifting, rope tension S as long as equal to or slightly greater than Q Q, heavy on You can leave the ground. However, if the oblique, wire rope and on the ground at an angle to the vertical. According to mechanics, acting on the rope pull S, so that the object can be decomposed into a vertical upward force P and the horizontal movement of the force F, to an object hanging from the ground, P Q. At the same time at least equal to F with the angle increases. In other words, the larger the angle oblique hanging when, at the same time lifting heavy objects rope the force the more produce big. So, if a full load when lifting heavy objects vertically, so when the inevitable overload oblique hanging, rope and even pulled off the accident occur. 2, a crane hanging oblique produce inertial force, endanger those around Further, when the oblique hanging The horizontal component F, when the weight is affected before leaving to friction in an instant from the ground, will object to the vertical center of the swing, it is possible and hang hanging personnel, workers or other objects around the crowded collision caused by an accident. In short, if oblique hanging, not only will cause overload pull off the rope, and make heavy swing jostling objects and people, causing personal and equipment accidents construction crane safety supervision and management of the provisions of Article 1 strengthen safety supervision and management of construction crane, preventing and reducing accidents, protect people's lives and property safety, based on "Construction Safety Management Regulations", "Regulations on Safety Supervision of Special Equipment", "safe production license regulations" the enactment of this provision. The second construction crane rental, installation, removal, use and supervision and management, application of this provision. The term construction crane means of special equipment included in the directory, in house construction sites and public works construction site installation, removal, use of lifting machinery. Article competent construction department of the State Council for National Construction crane leasing, installation, removal, use of supervision and management. Local people's governments at or above the county building department on building the administrative area of ??the crane rental, installation, removal, use of supervision and management. Article Rent construction crane rental and use of the unit purchase, leasing, construction crane used should have special equipment manufacturing license, product certification, manufacturing supervision and inspection certificate. Article Rent before construction crane rental for the first time, since the purchase of used construction crane construction crane in front of the unit is first installed, it should support the construction crane special equipment manufacturing license, product certification and manufacturing supervision Inspection Certificate to commercial registration of the unit above the county level people's government department in charge of construction for the record. Article Rent shall construction crane lease contract signed, clearly lease security responsibilities of both parties, and issue Construction crane special equipment manufacturing license, product certification, manufacturing supervision and inspection certificate, record evidence and self-test quality certificates, submit installation instructions. When people often use the crane in equipment handling process, use the crane operator, crane hoists shall be the oblique oblique, that hoisting rope hanging objects through the center of gravity and perpendicular, that allowed the oblique oblique hanging a lot of people In this regard some questions, why not oblique crane hanging it? 1, it is possible to overload the crane oblique hanging on the assumption that weight lifting objects from the floor for the Q, vertical lifting, rope tension S as long as equal to or slightly greater than Q Q, heavy on You can leave the ground. However, if the oblique, wire rope and on the ground at an angle to the vertical. According to mechanics, acting on the rope pull S, so that the object can be decomposed into a vertical upward force P and the horizontal movement of the force F, to an object hanging from the ground, P Q. At the same time at least equal to F with the angle increases. In other words, the larger the angle oblique hanging when, at the same time lifting heavy objects rope the force the more produce big. So, if a full load when lifting heavy objects vertically, so when the inevitable overload oblique hanging, rope and even pulled off the accident occur. 2, a crane hanging oblique produce inertial force, endanger those around Further, when the oblique hanging The horizontal component F, when the weight is affected before leaving to friction in an instant from the ground, will object to the vertical center of the swing, it is possible and hang hanging personnel, workers or other objects around the crowded collision caused by an accident. In short, if oblique hanging, not only will cause overload pull off the rope, and make heavy swing jostling objects and people, causing personal and equipment accidents