The invention relates to a limiting device of an electric trolley of a bridge type crane. The limiting device comprises a trolley frame and wheels, wherein the left and right ends of the trolley frame are both provided with rail sweeping plates the lower ends of which are provided with notches; the center of the lower part of the trolley frame is provided with a safe ruler; running tracks are arranged under the wheels; the running tracks, close to the left and right ends, are symmetrically provided with approach switch groups comprising approach switches A close to the inner side and approach switches B close to the outer side; the frontage surfaces of the running tracks close to the outer sides of the approach switches B are provided with fixed bases; the upper sides of the fixed bases are provided with telescopic cylinders; the top ends of the telescopic cylinders are provided with brake blocks which are provided with brake grooves. The limiting device has the advantages of simple structure, limiting accuracy, good braking effect and convenience in installation and maintenance.
Limiting device of electric trolley of bridge type crane
2015-09-02
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
Adjustable crane trolley limiting device with buffering structure
European Patent Office | 2020
|