What is the safety factor for lifting and hoisting?
2 Answers
The safety factor for lifting and hoisting is 1.3 times. The following is an analysis of the reasons for high engine speed: Poor fuel quality: If the quality of the fuel added to the vehicle is relatively low, it cannot effectively combine with air and burn in the engine cylinder, causing abnormal engine operation, which may lead to symptoms of excessively high vehicle speed. Personal adjustment: To prevent manual transmission vehicles from stalling during startup, the vehicle's speed can be manually increased. For example, manual transmission models in driving schools may have a speed 200-300 RPM higher than personal vehicles. Idle switch not closing: If the idle switch does not close, the engine will operate under overload conditions, naturally resulting in a high speed.
The safety factor in lifting and hoisting is something I frequently use when repairing vehicles. Simply put, it's the multiple of additional load the equipment can withstand. For example, if we're hoisting an engine in the workshop and the hoisting tool's label states a maximum load of 500 kg, but the actual safety factor is set at 4 times, then it can actually lift 2000 kg. This design accounts for unexpected situations, such as vibrations or impacts, to prevent objects from falling and causing injuries. In the automotive industry, the standard safety factor typically ranges between 5 to 6 times, but I recommend not operating at full load during routine tasks—leaving some margin is safer. Additionally, regularly inspect the aging of hoisting chains and hooks, as this affects the stability of the factor. I remember once when I was repairing a truck for a friend, I didn't check the factor, and the chain suddenly snapped, nearly causing an accident. Since then, I always test the actual load-bearing capacity before starting any job.
