International journal of advanced smart convergence

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Development of Auxiliary Wheel Unit Mechanism for Overcoming Obstacles

  • Han, Jae-Oh (Dept. of Mechanical Engineering, Chung-Ang University) ;
  • Youm, Kwang-Wook (Dept. of Mechanical and Automotive Engineering, Hanyaang cyber University)
  • Received : 2019.03.10
  • Accepted : 2019.03.21
  • Published : 2019.06.30
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Abstract

Recently, the spread of personal mobility has been rapidly increasing due to the development of environmentally friendly alternative transportation means. In addition, the level of battery technology is also rapidly developing, accelerating the popularization of personal mobility. Such personal mobility has convenience of location transfer, amusement, and high portability compared to other transportation devices. Most personal mobility, however, is made up of small wheels, which cannot overcome obstacles such as rugged roads or obstacles on the road. In this paper, to solve these problems, we tried to devise a device that can easily overcome obstacles by combining wheels with small moving means. The wheel size can be mounted on the front wheel of the small moving means in a protruding manner so that obstacles can be encountered before the front wheels and the safety and ride comfort of the running can be improved.

Keywords

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Figure 1. Conceptual design of auxiliary wheel unit

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Figure 2. The driving mechanism of the auxiliary wheel unit

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Figure 3. Horizontal and vertical component impulse comparison graph before and aftermounting of auxiliary wheel unit longer than front wheel radius

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Figure 4. 2nd prototype design throughcomplementation of 1st prototype design

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Figure 5. Manufacture of prototype model

Table 1. When the radius of the auxiliary wheel unit is shorter than the radius of the front wheel, the offset distance variation due to the change of the auxiliary wheel unit radius

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Table 2. When the radius of the auxiliary wheel unit is longer than the radius of the front wheel, the offset distance variation due to the change of the auxiliary wheel unit radius

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Table 3. When the radius of the auxiliary front wheel, impact of horizontal component

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Table 4. When the radius of the auxiliary front wheel, impact of vertical component

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Table 5. When the radius of the auxiliary front wheel, impact of horizontal component

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Table 6. When the radius of the auxiliary front wheel, impact of vertical component

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