Utveckling av monteringsbar Automationsstation : Produktrealisering av automatiseringsprocess inom byggindustrin

Detta är en Master-uppsats från Mälardalens högskola/Akademin för innovation, design och teknik

Sammanfattning: Automated processes in the construction industry are made today by prefabricating the building items and then transport it to the building site. Instead of producing the building items and transport them to the building site there is an idea of bringing the automated process to the construction site is, as it would generate huge profits by reducing unnecessary resource waste. However, it is a difficult challenge to implement and therefore it has not got a big impact today. The standard method to build reinforcement cages today is a tiresome job for construction workers. The method to build this cages is by means of lashing reinforcements bar on sight or in be prefabricated in advance. To avoid this manual work on sight, an idea from the companies Skanska and Robotdalen is to build an automated facility that can perform this work. This idea based on today's technology can be a way to automate a process at the construction site. The objective of this facility is to enable this station to be able to be mounted and transportable. This work is based on investigating via a pre-study, how it would be possible to product realize this concept of mountable automation station for reinforcement cages. The problem that arises is that an automation station requires repeatable accuracy and very fine accuracy. That is, the automation system used to drive the station can find itself back to exactly the same position repeatedly. This places enormous demands on the design that it has to be extremely rigid in order not to be deformed. A smaller prototype of this automated station has shown that the concept works. This work is based on continuing the concept of this project and examining how a full-scale prototype of the construction can look as well as concepts for manufacturing and find solutions for possible design problems. To study this, the strategy for research been to carry out a case study for the development of this construction. The study has followed a product development model similar to the waterfall method. This means that the work has followed a step by step plan. Many steps and concepts along the way have been evaluated with interviews and with many experienced designers in the industry. Many design areas have been very special and specific, which means it has been difficult to find general data in those areas. This means that a lot of the conclusions have to been put together from the experienced interviewees. The end result of this work is a product realized model of the automation station. The model is in the form of a gantry. The gantry can be assembled into removable beams that can be placed in a 40 foot container. The conclusion of this work is that, although the concept of the design has been discussed with several parties there still remains some practical testing. The unevenness system for recurring accuracy remains to be seen if it works. The calculations that are made should also be double- check aw well complete with calculations that may not be done in this work but are required to realize the concept. Even though there needs some testing, the concept is still considered feasible. This means that it could be a possible application to automate an on-site construction process.

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