{
  "abstract": "A traveling robot comprises: a lower housing; a frame assembly positioned inside the lower housing; a traveling unit position at the lower part of the frame assembly; a tray frame coupled to the upper part of the lower housing so as to extend upwardly; a load cell coupled to the tray frame; a moving bracket coupled to the upper part of the load cell; a tray holder coupled to the moving bracket and protruding through a fastening hole of the tray frame; and a tray module seated on the tray holder. By having the load cell, the traveling robot is capable of detecting whether an object placed on a tray is present or falling, toppling over, etc. and thus is capable of traveling in a stable manner.",
  "assignees": [
    "LG ELECTRONICS INC"
  ],
  "authors": [
    "KIM MOONCHAN",
    "KIM WOOJIN",
    "LEE GUNHO",
    "LEE ILJAE",
    "LEE WONDONG",
    "MUN SANGHUN"
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  "title": "Traveling robot",
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