Patent ID: 8945259
Filing Date: 2015-02-03
Classification: B01D,E02F,F02M

Abstract:
1. A construction machine, comprising: a lower propelling body; and an upper slewing body mounted on the lower propelling body, the upper slewing body including a working attachment mounted thereto such that the working attachment is able to perform work at a front side of the upper slewing body relative to a front-rear direction of the upper slewing body, an equipment room cover which covers an equipment room provided on the upper slewing body, a radiator which is disposed in the equipment room, an air intake duct which is disposed on an upstream side of the radiator with respect to an airflow direction in the equipment room, and an air filter which filters an airflow to be taken into the air intake duct, wherein the radiator has a core surface, and is disposed in such a manner that the core surface faces one side in width direction of the upper slewing body, the core surface being a surface for receiving an airflow taken into the radiator, the air intake duct has a filter mounting portion to which the air filter is dismountably mounted, the air filter has a filter surface, and is mounted to the filter mounting portion in a state that the filter surface faces the core surface of the radiator, the filter surface being a surface through which an airflow filtered through the air filter is allowed to exit, the equipment room cover is formed with a maintenance hole at a position corresponding to a rear side of the air filter mounted to the filter mounting portion relative to the front-rear direction of the upper slewing body, and in a state that the filter surface faces the core surface of the radiator, the maintenance hole having such a shape as to allow the air filter to pass, the filter mounting portion has a pair of guide members extending in a front-rear direction, relative to the front-rear direction of the upper slewing body, and along an upper surface and a lower surface of the air filter mounted to the filter mounting portion respectively, a contact member which is contacted with a front surface of the air filter mounted to the filter mounting portion, and a locking device which fixes a position of the air filter in a state that the front surface of the air filter is contacted with the contact member, the guide members are vertically spaced to form therebetween a space which houses the air filter, respective rear ends of the guide members defining an opening therebetween, the opening being opened rearward to allow the air filter to move away from the space to a rear side of the filter mounting portion through the opening, the locking device has a movable member which is configured to be movable between a locking position and a lock-releasing position, the movable member being configured in such a manner that when the movable member is in the locking position, the movable member contacts with a rear surface of the air filter in a state that the front surface of the air filter is contacted with the contact member while the air filter is housed in the space, thereby making the air filter be sandwiched and held between the movable member and the contact member, and that when the movable member is in the lock-releasing position, the movable member is apart from the rear surface of the air filter housed in the space to allow the air filter to slide rearward along the paired guide members so as to move away from the space through the opening.