Abstract: An engine room for construction equipment having a noise trap is provided, which can minimize noise, being generated in an engine room due to driving of an engine and a ventilating fan and emitted to an outside of the engine room, through a noise trap, and can prevent a fire caused by high heat of the engine from occurring.

Abstract: A rain hat device for heavy construction equipment which is installed adjacent to an exhaust gas discharging port of a distal end portion of an exhaust pipe to prevent inflow of rainwater therein is disclosed. The rain hat device comprises a swing cover installed at a distal end portion of the exhaust pipe in a spaced and floated state so as to prevent rainwater from flowing in the distal end portion of the exhaust pipe, and in which the swing cover does not come into contact with the distal end portion of the exhaust pipe to prevent noise from being generated due to contact and collision when an engine stops or exhaust gas is not discharged.

Abstract: A heating apparatus for a cabin of a construction equipment in which hot air ejected from an oil cooler is used for heating in the winter while it is ejected out in the summer, to maximize cooling or heating efficiency of the cabin of the construction equipment. The heating apparatus for a cabin of a construction equipment includes a duct ejecting air ejected from an oil cooler provided inside an automotive body at the rear of the cabin to the outside of the automotive body, and a switching unit provided in the duct to open and close an air vent in the duct, guiding the air inside the duct to the rear of the cabin if it is opened. The heating apparatus is automatically operated depending on its peripheral temperature condition to maximize cooling or heating efficiency of the cabin.

Abstract: A door opening device for heavy construction equipment is provided. The door opening device for heavy construction equipment is provided with a latch member rotating in a latch housing installed on one side of a door panel, and includes a latch control lever having a hinge part elastically supported on one side of an upper frame or a lower frame of a door, a handle extending from one side of the hinge part, and a yoke formed on the other side of the hinge part, the latch control lever forming a traction force on the yoke when the handle is rotated about the hinge part by an external force; a rotary shaft shaft-engaged with the latch member and having a swing part formed to extend to an outer side of the latch member, the rotary shaft rotating in a body with the latch member so that the latch member is released by the traction force of the latch control lever; and a traction cable having one end fixed to the yoke of the latch control lever and the other end connected to the swing part of the rotary shaft.