Crane Brake Mounting Block Design
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Date
2014-12-01
Authors
Calvadores, Kirk
Cheng, Xiao
Mach, Daniel
Sweryda, Kelsie
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Abstract
This report explains the design methods, and the necessary analysis needed to develop a crane brake-mounting block made from G40.21 44W steel. This report also covers our sponsoring company’s background, the problem statement that was presented by the customer, and needs we identified in order to develop the optimum design for the customer. Initially the team developed 26 rough brake mount ideas. Through careful screening and scoring of each mount idea, three final designs were selected for the initial designs. These designs were carefully analyzed based on static stresses obtained through finite element analysis (FEA) in order to determine the minimum thickness of the steel. Our FEA showed that the minimum thickness of the steel required was very small. As a result, we selected 1/8” steel which is the thinnest steel commercially available. The 3 selected concept designs we selected were; the hourglass, prism sheet metal, and the 2 block design. These designs were modeled using Autodesk Inventor and Solidworks in order to determine the stress distributions obtained from the applied loading forces. The designs were required to support the weight of the brake, which was 145 pounds as well as handle 300% of the motors’ full load torque. This value was calculated to be 546 foot pounds. FEA was performed on each initial design, and modifications were performed in order to determine the optimum dimensions for each design. Finally the three designs were evaluated in terms of manufacturing and material cost and engineering drawings were produced for each design.