kbk cranes often experience accidents during operation, which typically involve injuries and equipment damage caused by heavy loads, such as lifting beams and cables, falling from the air during lifting operations. Loss accidents are quite common and severe among equipment malfunctions. But what exactly causes these issues? Let's delve into that.
1. A rope release accident refers to injury and damage incidents caused by heavy objects falling, collapsing, or scattering from tied lifting ropes. The primary cause of rope release accidents is improper tying methods and key points for the heavy objects, leading to their slipping off. Incorrect selection of the lifting center of gravity can cause part of the lifting or an unstable lifting center, resulting in the heavy object falling; the crane sways during collisions, impacts, vibrations, etc., leading to the loss of the heavy object.
2. A脱钩 incident refers to an accident where heavy objects, lifting ropes, or slings fall off from the hook mouth, resulting in the loss of the heavy load. The main causes of脱钩 incidents are the lack of a protective hook device on the KBK crane hook; the failure of the protective hook mechanism; improper lifting methods; and the deformation of the hook mouth, causing it to open too wide.
The primary reasons for rope breakage are overloading of the lifting wire rope; failure of the lifting limit switch causing excessive winding of the wire rope; diagonal lifting and pulling leading to random rope compression and cutting of the wire rope; and fatigue deformation, wear, and damage due to long-term use and lack of maintenance of the wire rope, such as continued use when reaching or exceeding the discard standards.
The kbk crane accidents primarily occur in the lifting mechanism's retrieval system. Besides rope and hook release, rope and hook breakage, it is also very important to secure both ends of each lifting wire rope.
