Design of lifting frame for bundle puller

Mohamed Aliasrudin, Mohamad Ikhwan (2021) Design of lifting frame for bundle puller. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Bundle puller is important in oil refinery plant since this machine is used to extract the tube bundle from heat exchanger. Bundle puller consist of a cradle which is use to carry a mainframe and an engine compartment, a winch that can be attachable to a tube bundle· with a hydraulic powered screw drive to push the sled on the mainframe, a hydraulic elevator on the mainframe for holding and adjusting the position of tube bundle and adjusting the length of the front side of mainframe by using an extension. This project aim to design a lifting frame for bundle puller that can be used for variable size in diameter of tube bundle which the range is from 600 mm to 2000 mm and the maximum weight of the tube bundle is 20 ton. The study involve a few process which are designing conceptual design, designing the test rig to test the locking part of lifting frame, and finite element analysis on both of the design. The purpose of the analysis of the final design is to determine the maximum equivalent von-Mises stress on the design while the analysis on the test rig is to dcte1mine the maximum load that the test rig can withstand. This analysis have been done in order to define the suitable size of specimen from the final design at the locking part to be test on the test rig. The result shows that the final design of bundle puller is in good condition to be used by the company. From the analysis, the maximum stress for bundle puller is 156.86 MPa and the safety factor is 1.5938 while for test rig, the maximum stress is 206.85 MPa and the safety factor is 1.21. The result also shows that the test rig can be used to test the locking part of lifting frame for bundle puller. Finally, both of the design are to be a good guideline for further development or research on this project.

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