| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To properly collect sounds, which are generated around a shovel, except for a work sound of the shovel in which a revolving super structure including a cabin has a slewing mechanism, and to enable an operator to hear the collected sounds. <P>SOLUTION: A revolving super structure 3 of a shovel is supported to be revolvable with respect to a lower structure 1. The revolving super structure 3 is provided with an operator cab. An operation element is attached to the revolving super structure 3 so as to perform work in a position ahead of the driver cab. The operation element 6 revolves together with the revolving super structure 3. Sounds generated around the revolving super structure 3 are collected by a microphone 40. The sounds collected by the microphone 40 are reproduced by a speaker 10C inside the operator cab. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
