CPC B66C 13/54 (2013.01) [B66C 15/02 (2013.01)] | 20 Claims |
1. A fast-erecting crane comprising:
a telescopable and/or luffable tower with a height-adjustable mounted control and/or personnel stand configured to be lifted and lowered by two lifting elements, wherein the two lifting elements are articulated to a balancing rocker that is luffably mounted on a rocker bearing head connected to the control and/or personnel stand about a horizontal pivot axis;
a monitoring and/or safety device for monitoring the control and/or personnel stand, wherein the pivot axis is configured as a measurement axis for detecting the load state of the luffable bearing of the balancing rocker and for providing a load signal to the monitoring and/or safety device; and
a lever mechanism for generating a change of the measurement axis load acting on the measurement axis in dependence on a rotation of the balancing rocker relative to the rocker bearing head, and wherein the lever mechanism is associated with the balancing rocker and/or the rocker bearing head and/or the measurement axis.
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