| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance the strength and rigidity of a support bracket by a comparatively simple constitution and suppress vibration and deformation of a supporting leg plate in its plate thickness direction. <P>SOLUTION: A cab bracket 50 includes a supporting leg plate 51, a base plate 52, and a reinforcement plate 53. The supporting leg plate 51 extends upward along a beam board 23. A side edge of the supporting leg plate 51 is welded to a plate surface of the beam board 23. The base plate 52 is welded to a top end of the supporting leg plate 51, is projected in the horizontal direction, and is positioned over the beam board 23. A base end part of the reinforcement plate 53 is welded to the plate surface of the beam board 23. A tip of the reinforcement plate 53 is joined to a lower surface of the base plate 52. The reinforcement plate 53 protrudes horizontally from the base end part, and then is bent and extends up to the tip. A side edge part of the reinforcement plate 53 is welded to a plate surface of the supporting leg plate 51. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
