Manitowoc has been granted a patent for a crane drive method that automates the selection and application of a preferential load curve based on the actual inclination of a luffing jib. This method enhances load handling efficiency by utilizing pre-calculated load curves stored in memory. GlobalData’s report on Manitowoc 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 Manitowoc, was a key innovation area identified from patents. Manitowoc's grant share as of June 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.
Crane drive method for selecting preferential load curves
The patent US11999598B2 outlines a method for driving a crane that optimizes load handling based on the crane's configuration. The method involves several key steps: measuring the inclination of the jib structural elements using inclinometers, selecting a preferential load curve from a pre-stored set of curves based on the measured inclination, and applying this load curve to control the lifting and movement of loads. The system is designed to automate these processes, enhancing efficiency and safety during crane operations. Additionally, the method accommodates cranes with foldable luffing jibs, allowing for the measurement of multiple jib elements' inclinations and the selection of load curves that consider both the jib's angle and height.
The crane described in the patent includes a control system that integrates the inclinometer data and the stored load curves to facilitate automated decision-making. This system can also account for the position of a third jib structural element, which can be in either a stowed or deployed position. The control system is connected to maneuvering actuators, enabling precise control over load handling. Furthermore, the crane's design may incorporate height measurement devices, particularly for telescopic masts, to ensure that the load curve selection is based on both inclination and height, thereby optimizing performance across various operational scenarios.
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