SAFETY DEVICE AND RECORDING METHOD FOR WORKING CONDITIONS OF LIFTING MACHINE Russian patent published in 2012 - IPC B66C15/00 

FIELD: cranes.

SUBSTANCE: invention refers to the field of cranes. The rated value that characterizes load conditions, three-dimensional position of the gib arm, the load-handling device of the lifting machine is set in the safety system, the value of the mentioned parameter is measured. Working authorization for the drive that change the three-dimensional position of the working gib arm, the load-handling device of the lifting machine is withdrawn on the basis of the condition that the excessive measured value of the working conditions of the lifting machine should be eliminated and should exceed the rated value. The value of the parameter is recorded in the energy-independent memory unit that gives the user a possibility to read out the information. Presence of working authorization is revealed, the same is about the drive work if the measured parameter exceeds its rated value, the signal or data message about the working conditions of the lifting machine with a switched off or standing safety system is made up.

EFFECT: improvement of reliability of the lifting machine.

17 cl, 1 dwg