In the steel plant in the crane inspection a few questions

At present, the steel plant are widely used in plant construction. Because of its short construction period, the construction process is relatively simple, low cost and other advantages, except for some special occasions, the steel plant is always preferred. And installation of reinforced concrete factory building cranes in different tests,  Steel crane  inspection otherwise within the plant should pay attention to several issues.

Vibration, noise, sound, easy to loose coupling
     Because steel plant vibration absorption effect is poor, crane operation, especially when running carts have a greater vibration and noise. Damping method is currently used in the crane rails and carts bearing rail beam diagonally into the rubber gasket between the pads. These rubber pads can absorb vibration noise, but also regulate the level of rail carts levelness. However, this structure reduces the carts with the rail beam orbit coupling stiffness asked. In the  overhead gantry crane  truck operations, the rubber gasket compression and rebound the intermittent cause carts orbit coupling (eg orbit coupling plate, hook bolts, etc.) are more loose. In the inspection, found several inter-orbit coupling bolts loose carts or track hook bolts loose. Therefore, it is recommended to take the following measures when installing the track: (a) strictly control the height of the rubber gasket in the rail beam height difference between the larger, should be leveled using iron gaskets, rubber mat last; (2) on the bend hook bolt with a larger preload, compression rubber gaskets, increase joint stiffness,overhead bridge crane torque wrench should be used at the same time evenly distributed between rail fixing bolt preload; (3) using the double nut sturdy other more reliable anti-loose measure.