What are the types of safety protection devices for tower cranes?
2 Answers
Generally, there are moment limiters, which come in mechanical and electronic types. Weight limiters, also available in mechanical and electronic types. Hoisting limiters, slewing limiters, and radius limiters. Here is the relevant introduction: Definition: Tower cranes are the most commonly used lifting equipment on construction sites, also known as "tower cranes". They are extended section by section (height) (referred to as "standard sections") and are used to lift construction materials such as steel bars, wooden formwork, concrete, steel pipes, etc. Tower cranes are an essential piece of equipment on construction sites. Classification: The function of the tower crane (tower-crane) jib is to bear the upper loads transmitted by the boom ropes and counter-jib ropes, and to transfer them to the tower structure through structural components such as the slewing tower, turntable, and support base, or directly through the turntable. Self-climbing tower tops include truncated cone column type, forward or backward inclined truncated cone column type, A-frame type, and diagonal bracing type.
As someone with some mechanical knowledge, from my observations at tower crane construction sites, the safety devices on tower cranes are quite comprehensive. The radius limiter is the most basic, preventing the boom from extending too far beyond the load capacity; the height limiter ensures the hook doesn't rise too high and hit other objects; the overload protection device automatically locks the system when the weight exceeds the limit; the wind alarm alerts us to stop operations immediately when wind speeds are too high; the slewing limiter controls the rotation angle of the boom to avoid collisions; in addition, there's an emergency stop button to halt operations instantly in case of emergencies. Regular maintenance of these devices is crucial—we operators routinely check their functionality, never neglecting them despite exposure to wind and sun, otherwise the risk of accidents increases. Safety is the top priority on construction sites; at the very least, we must ensure construction safety.
