LOAD-LIFTING CRANE SAFEGUARD ADJUSTMENT METHOD Russian patent published in 2005 - IPC

FIELD: materials handling equipment.

SUBSTANCE: invention relates to methods of protection of boom load-lifting cranes and pipelayer cranes from overloads and damage. Adjustment is carried out by lifting calibrated load of preset mass in points of load characteristic with known parameters of boom equipment and regulating signals in load, reach and/or boom tilt angle measuring channels to provide correspondence of safeguard characteristic to preset load characteristic of crane. In process of regulation of signals in load, reach and/or boom tilt angle measuring channels, values of output signals of corresponding sensors are kept constant and regulation is done by adding and/or multiplying output signals from sensors and signals corresponding to adjusting parameters. Values of the latter are preliminarily determined and kept in nonvolatile memory of safeguard.

EFFECT: reduced labor input in adjustment of safeguard on load-lifting crane, provision of interchangeability of all components, possibility of adjustment of device on any type of load-lifting crane with unspecified mounting of load sensor.

6 cl, 2 dwg