METHOD OF AND DEVICE FOR MOMENT PROTECTION OF BOOM CRANE BY SIGNALS FROM SUPPORT PICKUPS Russian patent published in 2005 - IPC

FIELD: mechanical engineering; materials handling equipment.

SUBSTANCE: in proposed case functions of overturning moment and nominal forces of supports are synthesized from signals of support pickups. Overturning moment is reduced to one "window" whose upper limit corresponds to maximum of overturning moment, and operation of protection and is defined by constant value of restoring moment which depends on size of support outline and mass of counterweight. Created no-program device is adaptive to overturning moment and distribution of forces in supports and contributes to correct mounting of crane on supports from traveling position. Horizontal arrangement of platform and nominal distribution of forces of supports are maintained. Mounting of crane on supports is provided even is deviation of actual forces in supports from nominal values is revealed.

EFFECT: provision of protection of higher reliability and accuracy, improved service and dynamic characteristics of crane.

6 cl, 4 dwg