| Presentation | 2015-12-17 Failure Analysis of the Link Chain used in the Electric Chain Hoist Takashi Honda, Tetsuya Sasaki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The link chain used in the electric chain hoist at the factory of recycling cullet was fractured though it was used within the rated load. According to fracture surface analyses of the failure link chain by the scanning electron microscopic, the striation, which is a property of fatigue fracture, formed by over loads repeatedly was observed. In order to reveal the cause of the over load, the situation of the hoist installed in the factory was investigated in details. It was found that the coil spring above the hock was removed from the hoist. In case of removing it, the over winding prevent system does not work normally because the coil spring is a essential part of this system, and consequently, the link chain is subjected to the over load whenever this system works. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Chain hoist / Link chain / Fatigue / Fracture surface analysis |
| Paper # | SSS2015-27 |
| Date of Issue | 2015-12-10 (SSS) |
| Conference Information | |
| Committee | SSS |
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| Conference Date | 2015/12/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shigeo Umesaki(JNIOSH) |
| Vice Chair | Masaomi Kimura(Shibaura Inst. of Tech.) |
| Secretary | Masaomi Kimura(NPO RDA) |
| Assistant | Koh Kawashima(Oriental Motor) / Sei Takahashi(Nihon Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Safety |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Failure Analysis of the Link Chain used in the Electric Chain Hoist |
| Sub Title (in English) | |
| Keyword(1) | Chain hoist |
| Keyword(2) | Link chain |
| Keyword(3) | Fatigue |
| Keyword(4) | Fracture surface analysis |
| 1st Author's Name | Takashi Honda |
| 1st Author's Affiliation | National Institute of Safety and Health(JNIOSH) |
| 2nd Author's Name | Tetsuya Sasaki |
| 2nd Author's Affiliation | National Institute of Safety and Health(JNIOSH) |
| Date | 2015-12-17 |
| Paper # | SSS2015-27 |
| Volume (vol) | vol.115 |
| Number (no) | SSS-367 |
| Page | pp.pp.11-14(SSS), |
| #Pages | 4 |
| Date of Issue | 2015-12-10 (SSS) |