Construction machine

A construction machine comprising:

• a track structure;
• a swing structure provided swingably at an upper portion of the track structure;
• and
• an earth removing implement provided at at least either a front portion or a rear portion of the track structure, the earth removing implement including:
• a base portion frame mounted on the track structure;
• a blade mounted on the base portion frame by using a linkage mechanism and a cylinder such that the blade can be raised and lowered;
• a fixed cover supported on the base portion frame and positioned above the linkage mechanism;
• a movable cover that covers a gap between the fixed cover and the blade;
• and
• a guide pin that guides the movable cover while the blade is being raised and lowered, wherein
• the guide pin is supported on the base portion frame,
• the movable cover includes a main surface portion having a lower end connected rotatably with the blade and having an upper portion leaning on the fixed cover, the movable cover further including a side surface portion having a slot with which the guide pin engages, and
• the slot is formed along positions of the side surface portion of the movable cover facing the guide pin when the movable cover rotates by having the upper portion of the main surface portion sliding over the fixed cover in accordance with a raising/lowering operation of the blade, the slot being configured such that the guide pin engages with the slot at a lower end position therein when the blade is raised to a highest position.