Lifting Beam Design Example

How to design a spreader bar.

Lifting beam design example.

Shackles come in various patterns and capacities and typical examples are shown in figs. Spreader beams are universally applied gear which is widely used in various types of lifting operations onshore and offshore. Other elements commonly associated with lifting beams are hooks shackles chokers and slings. Sparta s approach to optimizing the spreader bar design otherwise known as lifting bar or lifting beam is an iterative process.

Lifting gear used appear. Lifting operations and lifting equipment regulations 1998 loler. Lifting factor f is the acceleration factor. The lifting classes are described in din 15018.

When lifting and carrying precast elements the lifting load has to be multiplied by the f factor. Conceptual design and design examples for multi storey buildings. We would like to show you a description here but the site won t allow us. In this article we will explore the design of a basic spreader beam and see what design checks are needed to establish the suitability of a spreader beam for particular lifting operation.

Review on lifting beam for electric overhead travelling eot cranes. It covers all aspects of the selection design manufacture verification testing repair modification storage inspection and safe use of lifting beams and spreader beams. Class is determined by the selected lifting system for example class h1 for a bridge crane class h4 for a. The design of lifting beams must meet specific calculation requirements per bth 1 to verify that the design will be safe and effective for its intended below the hook lifting application.

Shackles are used to connect the lines to the lifting beams. Variations in the design of the multi lift spreader bar evolve over a period of time as requirements and technology change and the demand for a more efficient product is desired. Spreader beams lifting beams lifting spreader frames. Design of adjustable spreader lifting beam of standard profile heb series geometry of lifting at the each end of the hollow pipe spreader beam solved using the equations of static equillibrium a strength design design for flexural bending stress selecting the section initially based on this.

By using bth 1 for designing lifting beams the different failure modes of the beam will be addressed and appropriate safety factors will be applied to the. Pdf a review. 4b this is but a small sample of lifting beam possibilities and their applications.