CAB FOR CONSTRUCTION MACHINE

摘要

Provided is a cab for construction machine, having an excellent operator protection effect against a lateral load. Provided is a cab disposed on an upper frame of a construction machine, including a pair of rear pillars and a rear panel disposed therebetween. The rear panel includes an outer panel and an inner panel including a plurality of panel portions vertically arranged and a bridge portion partly bridging the panel portions vertically adjacent to each other at a position offset from a lateral center position of the rear panel. The bridge portion forms a low-strength portion having lower strength than that of the panel portions so as to make the low-strength portion include a bending point at which the rear panel is bent when a lateral load acts thereon through an outer rear pillar.

主权项

1. A cab for use in a construction machine including a lower travelling body and an upper slewing body slewably mounted on the lower travelling body, the upper slewing body including an upper frame, the cab being disposed on the upper frame, the cab comprising:
a pair of rear pillars standing in a rear portion of the cab and laterally spaced; and a rear panel disposed between the pair of rear pillars, wherein: the rear panel includes an outer panel and an inner panel disposed on an inner side of the outer panel and joined to the outer panel; the inner panel includes a plurality of panel portions vertically arranged, each of the panel portions extending laterally, and a bridge portion partly bridging the panel portions vertically adjacent to each other, at a position offset outward and widthwise of the upper frame from a lateral center position of the rear panel; and the bridge portion forms a low-strength portion of the inner panel, the low-strength portion having a lower strength than a strength of the panel portions against a lateral load applied to the rear panel through an outer rear pillar of the pair of rear pillars from outer side widthwise of the upper frame upon turning over of the construction machine, so as to make the low-strength portion include a bending point at which the rear panel is bent by the lateral load.