ENGINEERING MACHINERY AND BALANCE WEIGHT LOCKING DEVICE THEREOF

摘要

A balance weight locking device for engineering machinery is provided, wherein the engineering machinery includes a balance weight lifting seat which is provided with lifting openings at its top part. The device has a swinging arm (3) hinged to a turntable (7) of the engineering machinery via a pin (4). Two ends of the swinging arm (3) are respectively hinged to push rods (2), and the tail ends of the two push rods (2) are respectively connected with locking parts. Under the action of power components, the swinging arm (3) is rotated about the pin (4) to make the two locking parts synchronously insert into or extract from the lifting openings. Engineering machinery with the balance weight locking device stated above is also provided. The engineering machinery and the balance weight locking device thereof may guarantee that the two sides of the balance weight are locked at the same time based on that the balance weight is reliably locked.