METHOD OF AND DEVICE TO CONTROL TOWER CRANE IN EMERGENCY Russian patent published in 2005 - IPC

FIELD: mechanical engineering; materials handling machinery.

SUBSTANCE: invention relates to safety engineering of load-lifting machines. Proposed method includes supply of current to drives of mechanisms and safety equipment, switching on drive of at least one mechanism of crane, switching off and braking, all operations being performed from cabin. Power supply to mechanism drives in emergency in cut off from ground or base on which crane is installed. Then supply of crane mechanism providing change of crane from dangerous position into safe position is carried out from said base. Then mechanism is released, its drive is actuated and crane is brought into safe position by means of additional control panel. Proposed device contains control panel arranged in crane cabin and safety device, such as external load setter with electric input and output, emergency sensor and crane mechanism drive supply pushbutton. Moreover, device is furnished with additional control panel on running gear in place easy to get at from base. Additional control panel is connected with main panel through output of external load setter and by means of additional feedback, and it has key-mark and additional switch. Drive of crane mechanism is connected with additional panel, key-mark is made removable, being installed in additional panel to interact with additional switch.

EFFECT: improved safety of tower crane in operation.

3 cl, 2 dwg