Cab for construction machinery

A cab for construction machines, including:

• mount bases located at four corners;
• base link frames arranged to connect said mount bases in transverse and longitudinal directions of the machine;
• left and right front pillars erected on left front and right front mount bases;
• left and right rear pillars erected on left rear and right rear mount bases;
• left and right roof pillars disposed in the longitudinal direction and bridged between upper end portions of said left front and rear pillars and said right front and rear pillars, respectively;
• a front tie frame bridged between upper end portions of said left and right front pillars to connect same in the transverse direction;
• and a rear tie frame bridged between upper end portions of said left and right rear pillars to connect same in the transverse direction;
• characterized in that said cab comprises:
• said left and right rear pillars are each constituted by a hollow steel pipe of a staggered shape with an inclined intermediate pillar portion between upright lower and upper pillar portions to have positions of said lower and upper pillar portions shifted in the forward and rearward directions, respectively;
• a recessed space is provided on the lower side of said intermediate pillar portions of said left and right rear pillars to expand an external machine room;
• a rear expansion space provided on the upper side of said intermediate pillar portions of said left and right rear pillars to expand an internal dwelling room of said cab;
• a rear panel provided between said left and right rear pillars to cover the back side of said cab, said rear panel being formed of a plate shaped in conformity with said staggered shape of said rear pillars;
• and
• a design cover attached to the back side of said rear panel in such a way as to cover an upper side of said recessed space.