Liebherr-International has patented a fast-erecting crane with a height-adjustable control stand lifted by two elements. The invention includes a safety device and a lever mechanism to monitor and ensure safety. The pivot axis serves as a measurement axis for detecting load state. GlobalData’s report on Liebherr-International gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Liebherr-International, Liebherr-International's grant share as of March 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Fast-erecting crane with height-adjustable control stand and safety device
A recently granted patent (Publication Number: US11964850B2) discloses a fast-erecting crane with innovative features aimed at enhancing safety and efficiency. The crane includes a telescopable and/or luffable tower with a height-adjustable control and/or personnel stand that can be lifted and lowered by two lifting elements. A monitoring and safety device is integrated to monitor the control and/or personnel stand, with a pivot axis serving as a measurement axis to detect the load state of the balancing rocker. A lever mechanism is employed to generate a change in the measurement axis load based on the rotation of the balancing rocker relative to the rocker bearing head, enhancing the crane's stability and safety during operation.
Furthermore, the patent details the inclusion of pivot stops on the balancing rocker and rocker bearing head to prevent excessive swivel movements, ensuring operational safety. The crane's design incorporates flexurally slack traction elements, such as lifting cables, for efficient lifting operations. Additionally, an evaluating device is integrated to analyze the measurement signal of the measurement axis, distinguishing between normal operating conditions and potential malfunctions of the lifting elements and balancing rocker. The evaluating device utilizes height and changes in the measurement signal to differentiate between overload scenarios and proper functioning, enhancing overall safety and performance of the fast-erecting crane.
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