Construction machine

摘要

A construction machine includes: a lower propelling body; and an upper slewing body which is slewably mounted on the lower propelling body. The upper slewing body includes: an engine room provided with an intake opening and a discharge opening; a duct provided in the engine room so as to communicate with the discharge opening; and an exhaust gas pipe which guides exhaust gas discharged from the engine into the duct. The discharge opening and an outlet of the duct are open downward from the engine room. A portion on a distal end side of the exhaust gas pipe is inserted into the duct. The duct and the exhaust gas pipe are configured to cause the exhaust gas to be mixed with cooled air in the duct and cause the mixture of the exhaust gas and the cooled air to be discharged downward from the discharge opening.

主权项

1. A construction machine comprising:
a lower propelling body; and an upper slewing body which is slewably mounted on the lower propelling body, the upper slewing body including: an engine room provided with an intake opening for introducing cooling air from an outside and a discharge opening for discharging cooling air to the outside; a duct provided in the engine room so as to communicate with the discharge opening and adapted to discharge the cooling air to the outside of the engine room through the discharge opening; and an exhaust gas pipe which guides exhaust gas discharged from the engine into the duct, wherein the duct has an inlet which is opened in the engine room to allow the cooling air in the engine room to be introduced into an inner space of the duct, and an outlet which is opened to allow the cooling air in the inner space of the duct to be discharged, the inlet being arranged above the outlet to allow the cooling air in the engine room to flow downward from the inlet to the outlet, the discharge opening and the outlet of the duct are open downward from the engine room, a portion on a distal end side of the exhaust gas pipe is inserted into the inner space of the duct and has an opening in the duct to discharge the exhaust gas to the inner space of the duct through the opening to cause the exhaust gas to be mixed with the cooling air flowing from the inlet to the outlet in the inner space of the duct and cause the mixture of the exhaust gas and the cooling air to be discharged downward from the discharge opening.