University of Twente Student Theses


Design of a modular display trolley

Lotlikar, A. (2019) Design of a modular display trolley.

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Abstract:The topic for the assignment was initiated by the company as a result of an ageing display trolley in its existing product portfolio. The X-ray Products (XP) division of Siemens Healthcare GmbH use these display trolleys in their current portfolio as an accessory to their Fluoroscopy systems. Since there was no refresh activity carried out on this module of the system, the display trolley remained outdated in terms of its design and functionality with the current trends of the market today and as desired by the customer. The X-ray products division at Siemens Healthcare values the quality and reliability in the products that they have been delivering for many years. With that being said, the company is also very sensitive towards its profit margin on products being sold. The objective of the assignment was to develop a modular display trolley to fit all the products in the XP product portfolio. The goal was to have minimum interchangeable parts depending on the variant being ordered. Additionally, there were two more features that were expected to be included in the new design of the trolley as compared to the existing one. A cost reduction of 25% and assembly time minimization was also targeted on the make up of the parts used to make up the display trolley. With this being said, all Siemens Healthcare products need to comply to the necessary compliance (IEC 60601-1) and safety norms to get the required certification for sale in most countries around the world. So, the design was obligated to fulfil certain criteria in terms of tests that are mentioned in these standards. The first part of the report explains the research that was carried out after studying the requirements drafted for the new display trolley. This includes making a basic concept using the Siemens product style guide as a reference. The aim was to get a general idea about the look and feel of the trolley and review it with the stakeholders. After the stakeholders decided their preference for the most desirable concept, further improvements and detailing was carried out. The next part of the report describes the market research that was carried out in search of modules that would meet the requirement for the two new functions that were added in the requirement specifications. The next step was to design the rest of the components and analyzing manufacturing possibilities. After this structural analysis was carried out on the indigenized components. The last part of the detailed design included calculating the stability calculations on the entire structure for all the variants. Based on the results of this analysis, further optimization was carried out on some of the components like the driving frame of the trolley and placement components within the assembly. During the final review, the cabling feasibility and serviceability is discussed in detailed.
Item Type:Internship Report (Master)
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Modular design; display trolley; COTS; stability
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