Innovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory

Product innovation refers to the process of creating a new product or redesigning the function of a product [1]. To help engineers quickly generate innovative ideas to complete complex designs, many innovative methods have emerged. Commonly used innovative methods fall into two categories: intuitive methods and logical methods. Intuitive methods do not involve pre-analysis but produce innovative ideas by stimulating a dormant human thought process [2]. Because intuition is usually divergent, many detours generally occur. The logical method is based on the principles of science and engineering, and a large number of existing solutions must be analysed to systematically solve a problem. The theory of inventive problem solving (TRIZ) was proposed by Ahshuler, who analysed more than 2 million highlevel patents worldwide and proposed the involving invention, creation and technological innovation based on the principles of multiple disciplines [3]. Because TRIZ theory is highly abstract and can be repeatedly applied in different fields to solve different problems, it is now widely used as a scientific theory. Elevators, as vertical transport tools in buildings, can solve the problem of vertical passenger transport in high-rise buildings and have been increasingly widely used [4]. Elevators are indispensable in modern highrise buildings and serve users with high efficiency and quality. With the rapid development of the economy and the rapid growth of the urban population, the scale of modern buildings is expanding, and the span of buildings is increasing [5]. Traditional elevators can only solve the problem of vertical transportation. Passengers still need to spend time walking to their destination after leaving the elevator. Because an elevator cannot move horizontally, it restricts the connections between different elevators with different shafts. In 1996, the Otis Company first proposed the OdysseyTM elevator system, which uses transmission and traction drives in the vertical direction and a linear motor drive in the horizontal direction to achieve lateral elevator movement [6]. This system is mainly used to solve the transfer problems of elevators in different sections of high-rise buildings and can be applied to improve the mobility efficiency of passengers in large-span buildings. In [7], a ropeInnovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory Chen, J. – Li, X. – Yang, H. – Wang, C. Jiwen Chen1,2,* – Xin Li1,2 – Hongjuan Yang3 – Chen Wang1,2 1Shandong Jianzhu University, Co-Innovation Center for Green Building of Shandong Province, China 2Shandong Jianzhu University, School of Mechanical and Electronic Engineering, China 3Shandong Jianzhu University, School of Information and Electrical Engineering, China