Abstract: This invention provides with a construction machine having a front window-locking device comprising locking members rotatably mounted on a window frame of a front window and adapted to secure the front window either in a closed position or in an opened position of the front window and engaging members provided in a cabin to be coupled with the locking members in a locked state, whereby capable of fixing the front window such that it is attracted to a main body of the cabin without rattling.

Abstract: This invention provides with a construction machine having a door-locking device comprising a door lock upon closing a door including two sets of locking mechanisms and door strikers mounted on front and rear sides of the door in which the locking mechanisms and door strikers are engaged with each other respectively so as to lock the door, whereby capable of making the door secured to a cabin body firmly without jounce.

Abstract: A cabin frame for a cabin of a construction machine includes a combination of a posterior frame body having a predetermined strength and an anterior frame body disposed in front thereof. The posterior frame body defines a common element that is used in common between different machine models, whereas the anterior frame body defines an adjustment element such that its dimension in a front-back direction of the construction machine is determined according to the corresponding machine model. Another cabin frame includes a combination of an anterior frame body defining a common element used in common between three machine models, namely, a model with an operator-protecting function, a low-tare model with an operator-protecting function, and a high-tare model with an operator-protecting function; and a posterior frame body defining a replaceable element having a predetermined strength selected from a plurality of strengths set for the corresponding machine models.

Abstract: This invention provides with a construction machine having a front window-locking device comprising locking members rotatably mounted on a window frame of a front window and adapted to secure the front window either in a closed position or in an opened position of the front window and engaging members provided in a cabin to be coupled with the locking members in a locked state, whereby capable of fixing the front window such that it is attracted to a main body of the cabin without rattling.

Abstract: A cabin equipped with link type door comprises two links provided on at least upper parts of both a cabin and an opening and closing door at the side of the cabin, one-side ends thereof being pivotally supported on the door and the other ends on the cabin, so that the door is retained on the cabin by the links; a movable supporter for supporting the door weight, which is provided in the middle part of the link for mainly supporting the door weight of the links; and a support member for placing the movable supporter to support the door weight and making the movable supporter travel in the opening and closing movement of the door, which is provided on the cabin, whereby the sagging of the links can be prevented to keep the link pivotal support part from shaking.

Abstract: This invention provides with a construction machine having a door-locking device comprising a door lock upon closing a door including two sets of locking mechanisms and door strikers mounted on front and rear sides of the door in which the locking mechanisms and door strikers are engaged with each other respectively so as to lock the door, whereby capable of making the door secured to a cabin body firmly without jounce.

Abstract: A cabin equipped with link type door comprises two links provided on at least upper parts of both a cabin and an opening and closing door at the side of the cabin, one-side ends thereof being pivotally supported on the door and the other ends on the cabin, so that the door is retained on the cabin by the links; a movable supporter for supporting the door weight, which is provided in the middle part of the link for mainly supporting the door weight of the links; and a support member for placing the movable supporter to support the door weight and making the movable supporter travel in the opening and closing movement of the door, which is provided on the cabin, whereby the sagging of the links can be prevented to keep the link pivotal support part from shaking.