Telescoping Jib Rod Guying System for Mobile Crane
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Solution Overview
Problem
Current telescoping jibs for mobile cranes face challenges in achieving a lighter construction and increased load-bearing capacity while maintaining the same dimensions, with existing guying systems often requiring complex setups and increasing construction height during transport.
Innovation Solution
A rod guying system with guide holders on the jib basic box that receive displaceable tension rods, which are fixedly articulated to guying supports on telescoping sections, allowing for easier setup and operation, and featuring a simplified structure with multiple guying points for enhanced stability and load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a rod guying system with guide holders is used, then setup time is reduced and construction height during transport is lowered, but the complexity of the guying system increases
Solution Approach 1:
The guying system is divided into modular components: guide holders attached to the jib basic box, displaceable tension rods, and guying supports on telescoping sections. This segmentation allows independent positioning and assembly of each component, reducing setup time while distributing system complexity across manageable modules rather than a single complex assembly mechanism.
Solution Approach 2:
Guide holders serve as intermediary elements between the jib basic box and the tension rods, providing a simplified interface for rod placement and displacement control. This intermediary mechanism enables quick setup by guiding rods into position without requiring complex alignment procedures, while the holding mechanisms on guying supports provide secure fixation when needed.
2Strength
If multiple guying points are used, then stability and load-bearing capacity increase, but the weight of the guying system increases
Solution Approach 1:
Multiple guying points are strategically positioned at specific locations along the telescoping jib sections where structural support is most needed. Each guying point is equipped with holding mechanisms that can be selectively engaged, providing localized reinforcement without requiring continuous heavy-duty support along the entire jib length. This allows optimization of load-bearing capacity at critical points while minimizing overall system weight.
Solution Approach 2:
The guying system incorporates displaceable tension rods that can be dynamically positioned and adjusted along the jib sections. The holding mechanisms on guying supports allow the system to adapt its configuration based on operational requirements, enabling the same structure to provide varying levels of support for different load conditions without requiring a permanently heavy design.
3Ease of operation
If displaceable tension rods are used with holding mechanisms, then ease of operation improves, but the device complexity increases
Solution Approach 1:
The holding mechanisms are extracted as separate, standardized components attached to the guying supports, rather than being integrated into the tension rods themselves. This extraction allows the tension rods to remain simple, lightweight, and easy to handle, while the holding mechanisms provide the necessary fixation function at the guying support locations. Operators can easily engage and disengage rods without manipulating complex integrated mechanisms.
Solution Approach 2:
The guide holders and holding mechanisms are designed to enable self-guiding and self-locking of the tension rods during setup and operation. The guide holders automatically guide rods into correct positions, and the holding mechanisms on guying supports provide automatic engagement features, reducing the skill level and effort required for operation while maintaining system reliability.
Data Source
AI summary
A telescoping jib of a mobile crane includes sections that telescope out of a jib housing from a transport position into an operating position. A guying system has successively connected tension rods extending from the jib housing to at least one of the extended telescoping jibs by at least one guying support. The mobile crane provides a lighter construction and improved road handling, and an increased load capacity for unchanged telescoping jib measurements. To this end, a guide holder arranged on the jib housing receives the tension rods in the transport position and, in the operating position, at least one movable tension rod on one of the guying supports is respectively securely connected to the outer end of a telescoping section head in an articulated manner and can be secured to a holding mechanism on the opposite end on an adjacent guying support of an adjacent telescoping section head.