Abstract: An apparatus installed in an inner side surface of an entrance door of a driving room for safely preserving a subglass when the subglass, which is detachably installed in a lower portion of a front surface of a driving room of a heavy equipment, is separated based on a working environment. The apparatus includes a lower bracket attached to a lower portion of the door, forming a mounting groove upwardly opened for inserting a lower portion of the subglass therein, and supports the subglass inserted in the mounting groove; an upper bracket installed on the upper portion of the lower bracket of the door supporting an upper portion of the inner surface of the subglass inserted in the lower bracket; and a locking apparatus installed in an upper portion of the door, which detachably supports an upper portion of the outer surface of the subglass.

Abstract: The present invention relates to an apparatus for preserving a subglass of a driving room of a heavy equipment which is installed in an inner side surface of an entrance door of a driving room for safely preserving a subglass when the subglass which is detachably installed in a lower portion of a front surface of a driving room of a heavy equipment is separated based on a working environment.