Cable Anchorage Coupling Rod with Rotational Freedom
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Solution Overview
Problem
Existing cable anchorage systems in civil engineering structures face difficulties in installation and tuning due to extreme weight and high loads, and lack rotational capacity, leading to parasite stresses from misalignment and potential damage from bending moments.
Innovation Solution
A cable anchorage system providing at least four degrees of freedom with a coupling rod that allows for free rotation around three perpendicular axes during installation, featuring a threaded end and a mounting end with a radially extending rod shoulder for alignment and stabilization, and a stressing unit for tensioning the cable without additional auxiliary elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid thread connection is used between the anchor pipe and clevis, then the structural strength is improved, but the installation flexibility and ability to accommodate misalignment are worsened
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism with a movable adjustment element that can shift position along the anchor pipe during installation. This allows the system to transition from a rigid fixed connection to a dynamic adjustable connection, enabling accommodation of misalignment while maintaining structural integrity once positioned.
Solution Approach 2:
The patent changes the positional parameter of the adjustment element along the anchor pipe to accommodate misalignment. By allowing the adjustment element to move to different positions, the system can adapt to varying alignment conditions without compromising the strength of the connection.
2Stability of the object's composition
If the anchor pipe is fixed rigidly to the support structure, then the stability is improved, but the ability to accommodate misalignment and reduce parasite stresses is worsened
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism that allows the anchor pipe to be positioned at different locations along its length during installation. This dynamic positioning capability enables the system to accommodate misalignment and reduce parasite stresses while maintaining stability once the correct position is achieved.
Solution Approach 2:
The patent incorporates a feedback mechanism where the adjustment element can be repositioned based on alignment conditions. This allows the system to respond to misalignment and adjust accordingly, reducing harmful stresses while maintaining stable anchoring.
3Ease of operation
If additional auxiliary elements are added for alignment and adjustment, then the ease of installation is improved, but the device complexity increases
Solution Approach 1:
The patent merges the adjustment function directly into the anchor pipe structure by incorporating an adjustment element that can move along the pipe. This integration eliminates the need for separate auxiliary alignment devices while maintaining ease of installation, as the adjustment capability is built-in rather than added as a separate component.
Solution Approach 2:
The adjustment element serves multiple functions: it provides alignment capability, allows positional adjustment, and maintains structural connection. This multi-functionality reduces the need for additional specialized components, thereby reducing overall device complexity while improving installation ease.
Data Source
AI summary
A cable anchorage system for anchoring a cable to a support structure in a civil engineering construction comprises an anchorage socket attached to the cable, a support socket attached to the support structure and a longitudinal coupling rod, which couples the anchorage socket to the support socket. The coupling rod comprises a threaded end, which interacts with a counter thread on one of the two parts which are the anchorage socket and the support socket, and a mounting end with a radially extending rod shoulder. The other one of the two parts which are the anchorage socket and the support socket comprises a longitudinal opening for receiving the mounting end of the coupling rod, which opening comprises an inwardly extending abutment shoulder. The rod shoulder abuts on the abutment shoulder in a first longitudinal direction and is slideable within the opening in a second longitudinal direction opposite to the first direction, when the anchorage socket is moved towards the support socket for tuning the cable anchorage system.