APPARATUS FOR SEMI-AUTOMATICALLY OPENING/CLOSING DOOR OF CONSTRUCTION EQUIPMENT

摘要

Disclosed is an apparatus for opening/closing a door in which the door can be semi-automatically closed in a preset section so as to enable an operator in an operating cab to easily close the door. The apparatus for semi-automatically opening/closing door of construction equipment according to the present invention comprises: an upper hinge mounted on the door and having a first receiving hole; an upper option pin which is detachably coupled to a bottom surface of the upper hinge and the bottom surface of which has a first plane and a first inclined surface extending from the first plane; a lower hinge mounted on an operating cab and having a second receiving hole; a lower option pin which is detachably coupled to an upper surface of the lower hinge and the upper surface of which has a second plane and a second inclined surface extending from the second plane; and a guide pin, the upper end of which penetrates through the upper option pin and is coupled to the first receiving hole of the upper hinge, and the lower end of which penetrates through the lower option pin and is coupled to the second receiving hole of the lower hinge.

主权项

1. A semi-automatic door opening and closing apparatus for a construction machine having a door 10 openably and closably mounted on an operator's cab 17, the apparatus comprising:
an upper hinge 12 mounted on the door 10, the upper hinge having a first seating hole 11 formed therein and a rotation prevention means formed on an underside thereof; an upper option pin 16 having a rotation prevention means formed on a top surface thereof, which is in close contact with the underside of the upper hinge 12 to prevent idling of the upper option pin 16 during the opening and closing of the door 10, a first plane 14 formed on an underside thereof, and a first inclined surface 15 formed on the underside thereof so as to extend from the first plane 14, the upper option pin 16 being penetratingly formed internally; a lower hinge 19 mounted on the cab 17 so as to perform a relative rotation with respect to the upper hinge 12, the lower hinge 19 having a second seating hole 18 formed therein and a rotation prevention means formed on a top surface thereof; a lower option pin 22 having a rotation prevention means formed on an underside thereof, which is in close contact with the top surface of the lower hinge 19 to prevent idling of the lower option pin 22 during the opening and closing of the door 10, a second plane 20 formed on a top surface thereof, and a second inclined surface 21 formed on the top surface thereof so as to extend from the second plane 20, the lower option pin 22 being penetratingly formed internally; and a guide pin 23 having an upper end coupled to the first seating hole 11 of the upper hinge 12 so as to penetrate through the option pin 16 and a lower end coupled to the second seating hole 18 of the lower hinge 19 so as to penetrate through the lower option pin 22, wherein if an external force applied to the door 10 is removed after opening the door 10 in a state where the lower hinge 19 is securely fixed to the cab 17 and the upper hinge 12 is mounted on the door 10, the first inclined surface 15 of the upper option pin 16 is rotated to slide along the second inclined surface 21 of the lower option pin 22 by the door's own weight, so that the door 10 is semi-automatically closed in a preset section.