Rotary drilling rig covering part air spring opening and closing door

• Main Authors: QIN AIGUO, YANG YANG
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2013
• Subjects: CHECKS FOR WINGS; DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; KEYS; LADDERS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING

The utility model relates to the technical field of rotary drilling rig covering part air spring opening and closing doors, in particular to a rotary drilling rig covering part air spring opening and closing door which comprises a door lock, a handle, a door, an air spring, a collision block and a door frame. The top end of the door is hinged to the top end of the door frame, the middle of the door is connected with the middle of the door frame through the air spring, the handle is arranged on the door, the door lock is mounted at the tail end of the door, and the collision block is mounted at the lower end of the door frame. The covering part door is quite convenient to open and close, the door is fixed at the maximum position and cannot fall down by locking the air spring, and a manual limit rod needed by a traditional mode is omitted.