Testing of elevator door sill assembly
Kaariaho, Iiro-Elias (2018)
Savonia-ammattikorkeakoulu
2018
All rights reserved
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-201804024009
https://urn.fi/URN:NBN:fi:amk-201804024009
Tiivistelmä
Reliability is a key competitive factor in global markets. Reliability affects the safety of a product as well as the customer satisfaction. In a mechanical assembly, every individual component is linked together and often the assembly is only as good as the weakest link. For this reason, it is im- portant to study every individual component. The aim of this thesis is to design a test device and method for an automatic elevator door sill assembly. Firstly, the background and the scope of the thesis are presented. The theory chapter contains a couple of main standards which are related the reliability of the elevator door. Also reliability and accelerated testing are studied in the chapter. After the theory chapter the basics of elevator doors are presented. It includes a presentation about different types of doors and the mechanical structure of the elevator door. Every assembly of the door is presented briefly and their functions are explained. Last, the mechanics of the sill and guide shoe assembly are presented. This assembly is also the main research object in this the- sis. The research starts by exploring the sill assembly requirements and functions. The reliability of the sill is studied also and main failure modes and the number of them are presented. KONE stud- ies are used as a source when studying reliability.
Based on these studies there was a need to develop a test device and method for sill assembly testing. The new device provides possibility to test the sill assembly in laboratory conditions and the failure of the assembly is easy to monitor. The test device and method are designed so that the maximum number of situations which an elevator door faces during its life cycle can be simu- lated. Also various levels of stress are used to accelerate the test. The new testing system is mainly intended to be used for research how existing products and new innovations perform against each other under the test. Based on the test results, it is possible to compare and validate the most reliable option. Under- standing the issues which cause unreliability is the key to developing and producing better auto- matic elevator doors in the future.
Based on these studies there was a need to develop a test device and method for sill assembly testing. The new device provides possibility to test the sill assembly in laboratory conditions and the failure of the assembly is easy to monitor. The test device and method are designed so that the maximum number of situations which an elevator door faces during its life cycle can be simu- lated. Also various levels of stress are used to accelerate the test. The new testing system is mainly intended to be used for research how existing products and new innovations perform against each other under the test. Based on the test results, it is possible to compare and validate the most reliable option. Under- standing the issues which cause unreliability is the key to developing and producing better auto- matic elevator doors in the future.