Crane Bracing Boom with Cross-Connected Guying Cables
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Solution Overview
Problem
Existing crane designs with spatial guying systems face inefficiencies in supporting booms against forces perpendicular to the pivoting plane, particularly when the boom is extended rearward, and lack optimal stability and synchronization of guying points.
Innovation Solution
A crane design featuring a bracing boom arrangement with guying cables running to guying points on opposite sides of the pivoting plane, where the bracing boom is pivotable around a luffing axle perpendicular to the plane, ensuring consistent guying point distance and incorporating a cross-connection between guying points to handle compressive and tensile loads, along with separate derrick ballast components for improved lateral stability and travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bracing boom arrangement is positioned in the extended rearward position to serve as derrick booms, then the crane can perform derrick operations, but the spatial guying capability deteriorates significantly
Solution Approach 1:
The bracing boom arrangement is designed to be pivotable around a luffing axle that stands perpendicular to the pivoting plane of the boom. This dynamic positioning capability allows the bracing boom to be adjusted between the extended rearward position for derrick operations and positions that provide optimal spatial guying, enabling the system to adapt to different operational requirements while maintaining both derrick functionality and guying stability
Solution Approach 2:
The bracing boom arrangement serves multiple functions: it acts as a derrick boom when extended rearward and simultaneously provides spatial guying support when positioned appropriately. The cross-connection between guying points further enhances this multi-functionality by providing structural stability for both derrick operations and spatial guying configurations
2Stability of the object's composition
If the guying points are positioned far apart to improve spatial guying, then the lateral stability improves, but the device complexity increases
Solution Approach 1:
The cross-connection between the two guying points merges the structural elements into a unified bracing boom arrangement. This cross-connection serves multiple purposes: it maintains the distance between guying points for lateral stability, provides a pivot point for the luffing axle, and creates a rigid structure that handles both derrick operations and spatial guying without requiring separate complex mechanisms
Data Source
AI summary
The within invention relates to a crane with a boom slewable in a vertical pivoting plane and a bracing boom arrangement, particularly a derrick boom arrangement in which a luffing cable is arranged between the boom and the bracing boom arrangement, in which the luffing cable has at least two guying cables that run from two guying points arranged on the opposite side of the pivoting plane, which cables belong to the bracing cable arrangement, to the boom, in which the two guying cables are each movable by means of a winch and in which a mechanical coupling is provided between the two winches by means of which the movement of the two winches can be force coupled.