What is the trial lifting height?
2 Answers
The trial lifting height of a crane should not exceed 0.5 meters. Below is relevant information about cranes: 1. Introduction to cranes: A crane is a lifting and handling machinery widely used in ports, workshops, power plants, construction sites, and other locations. The term "crane" is the unified designation for lifting machinery. Commonly referred to as cranes are mainly truck cranes, crawler cranes, and tire cranes. The uses of cranes include hoisting equipment, emergency rescue, lifting, machinery, and rescue operations. 2. Structure of cranes: Cranes mainly consist of the hoisting mechanism, traveling mechanism, luffing mechanism, slewing mechanism, and metal structure. The hoisting mechanism is the basic working mechanism of a crane, mostly composed of a suspension system and a winch, and some also use a hydraulic system to lift heavy objects. The traveling mechanism is used for longitudinal horizontal movement of heavy objects or to adjust the working position of the crane, generally consisting of an electric motor, reducer, brake, and wheels.
In crane operations, the trial lifting height is a critical point, usually referring to the initial distance the load is lifted off the ground, such as around 100 millimeters. I've seen many people overlook this, and the consequences can be disastrous if an accident occurs. Think about it—before lifting anything, you should always test it first to check if the ropes are tight and the center of gravity is stable, to avoid swinging and hitting something after lifting. Especially in automotive repairs, such as lifting an engine, if not tested properly, it might tilt and fall, damaging the vehicle or injuring people. I recommend keeping the height around 10 centimeters during initial operations, waiting for about ten seconds to confirm everything is secure before proceeding to lift higher. This not only saves time but also enhances safety. Don’t find it troublesome; with practice, it will become a habit.
