PROBLEM TO BE SOLVED: To provide a demolition attachment that is prevented from growing in size and opening of a movable jaw during shearing of a steel material.;SOLUTION: A demolition attachment is used by slidably crossing facing portions 111a, 111b formed on a pair of movable jaws 1a, 1b, respectively, while slidably contacting mutual inside faces 112a, 112b. In the demolition attachment, pinching plates 12a, 12b in parallel with movable jaw bodies 11a, 11b are integrally installed on the movable jaw bodies 11a, 11b on opposite side of the facing portions 111a, 111b across a rotary axis 2. At least in an opening and closing range of the movable jaws 1a, 1b where the facing portions 111a 111b pinch a steel material and start shearing, the movable jaws bodies 11a, 11b of the other party are pinched by mutual movable jaw bodies 11a, 11b and the pinching plates 12a, 12b.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT
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