We can see that the vertical downward forces of Fv1 and Fv2 are balanced by the components F1y and F2y, while F1x and F2x are the compressive forces on the spreader. If we resolve the forces on the whole beam, we get the force diagram as shown in figure 3. If we resolve the forces, we can immediately see that the lifting beam will be primarily under bending stress (see figure 2).Ī spreader beam, on the other hand, is designed to take primarily compressive loads, as can be seen in figure 3. We can see that it has a lifting eye at its top in the middle, while the eyes below are used to connect the slings to the lifted object. Lifting beams are designed to take bending loads. 1 A typical lifting beam Lifting beam vs Spreader beamĪt the outset, it is important to clarify the difference between a lifting beam and a spreader beam. The slings from the two eyes on the lower face go directly to the item lifted.įig. The lifting beam discussed here is one with two lifting eyes at the lower face and a single lifting eye in the middle of the upper face as shown below. In this article, we will explore the design of a basic lifting beam and see what design checks are needed to establish the suitability of the beam for a particular lifting operation. Lifting beams are universally applied gear used widely in various types of lifting operations, onshore and offshore.
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