Where is ground bearing pressure greatest on a crawler crane during hoisting?

The greatest ground bearing pressure on a crawler crane during hoisting occurs over the corner of the crane, particularly where the load is being lifted. This phenomenon is due to the distribution of weight and forces exerted on the crawler’s tracks during operation. When the crane lifts a load, the center of gravity shifts, and the weight of the load creates torque that influences the ground pressure.

In a hoisting scenario, especially when the load is heavy or extended out from the center, the rear and corner areas of the crane experience increased pressure as they bear the weight of the crane, the load, and the forces generated during the lifting process. This is because the force of lifting creates a moment that pivots the crane around its track system, resulting in the greatest downward force concentrated at the corner points where the tracks meet the ground.

Understanding this concept is crucial for ensuring the stability of the crane during operation and avoiding ground failure or tipping, making it an essential aspect of crane operation and safety protocols.