| 摘要 |
PURPOSE: A goliath crane having a turnover prevention unit is provided to prevent an upper trolley from being inclined by preventing damage to members of a main girder caused by a turnover prevention unit installed on the upper trolley. CONSTITUTION: A goliath crane having a turnover prevention unit comprises a main girder (10), an upper trolley, first and second hoist parts, and a turnover prevention unit. The turnover prevention unit comprises a support bar, a vertical bar (120), and a roller assembly (130). The top end of the support bar is fixed to the upper trolley. The vertical bar is vertically fixed to the bottom end of the support bar. The roller assembly is installed on the vertical bar and comprises a shaft (131) and a guide roller (132). The guide roller is installed on the end of the shaft exposed to the outside the vertical bar to be rotatable and line-contacts with the bottom surface of the flange of the main girder. |
