When we transport large items, we often use many other tools, such as a 1" ratchet buckle . So what are our methods for hoisting?
The hanging object is lying horizontally, and the spreader is hoisted at the longitudinal center of a certain point above the center of gravity of the hanging object. As shown in Figure C above, the force of the spreader during the hoisting process is much greater than half of the weight of the hanging object, and the force depends on the distance between the lifting points. The distance of the center of gravity of the hanging object. The smaller the distance, the greater the force on the spreader, and vice versa. Then the force of the sling is gradually reduced. When the hanging object is about to stand upright, the force of the sling becomes more sensitive. When it is completely lifted off the ground, the force of the sling is slightly greater than the weight of the hanging object.
The hanging object is lying horizontally, and the spreader is hung on a side surface above the center of gravity of the hanging object, but the deflection of the spreader is slightly increased, and the force is also slightly greater. After the hanging object is lifted off the ground, the hanging object is skewed, and its inclination reaches the balance of the spreader and the center of gravity of the hanging object on a vertical line. To reach the hanging object upright, this method needs to exert another force on the hanging object.
Of course, the tensioner has different models, and there are also the 2" ratchet buckle or other specifications.