Antenna Unit Hook for RRU Eject-Inject Installation
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Solution Overview
Problem
Current antenna systems do not allow for convenient and safe installation or removal of remote radio units while they are installed on a tower or structure, requiring the units to be lowered to the ground for servicing or changes.
Innovation Solution
An antenna unit system with a docking station and mechanical tab that allows remote radio units to be suspended above the docking station for cable connection before full installation, and a mechanical handle for easy engagement and disengagement using a cam and follower configuration, along with safety features like carabiners for secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the RRU is fully installed in the docking station on the tower, then the system is stable and secure, but cable connections and servicing cannot be performed without lowering to ground level
Solution Approach 1:
The installation process is segmented into distinct phases: a temporary hanging phase using the mechanical tab for cable connections, and a final installed phase using the cam-and-follower mechanism for secure mounting. This segmentation allows cable connections to be made in an accessible position before final installation, resolving the contradiction between accessibility and stability.
Solution Approach 2:
Cable connections are performed as a preliminary action while the RRU is temporarily hung from the mechanical tab, before the RRU is fully installed into the docking station. This preliminary action resolves the contradiction by enabling cable work to be completed in an accessible position prior to final secure installation.
2Ease of manufacture
If the RRU is lowered to ground level for servicing, then cable connections can be made easily, but the system remains non-operational during the servicing process
Solution Approach 1:
Cable connections are performed as a preliminary action while the RRU is temporarily hung from the mechanical tab on the tower, eliminating the need to lower the unit to ground level. This allows servicing to be performed in-situ, reducing service downtime while maintaining ease of cable connection.
Solution Approach 2:
The mechanical tab serves as an intermediary mechanism that enables temporary suspension of the RRU in an intermediate position between ground level and final installed position. This intermediary state provides both accessibility for cable connections and proximity for rapid reinstallation, resolving the contradiction between ease of connection and minimal downtime.
3Adaptability or versatility
If a temporary hanging mechanism is added to the antenna system, then in-situ servicing becomes possible, but the device complexity increases
Solution Approach 1:
The mechanical tab and cam-and-follower mechanism are merged with the existing docking station structure, rather than being separate add-on components. This integration minimizes the increase in device complexity while enabling in-situ servicing capability. The mechanical tab is attached to the antenna body, and the cam-and-follower mechanism is incorporated into the docking station, combining multiple functions in a unified structure.
4Area of stationary object
If the mechanical tab extends to the back of the antenna body, then clearance for cable connections is provided, but the antenna structure becomes more complex
Solution Approach 1:
The mechanical tab extends in a direction perpendicular to the front face of the antenna body, utilizing the depth dimension of the antenna structure to create clearance space. This dimensional approach provides the necessary clearance for cable connections without adding complexity to the front-facing antenna structure, as the tab is integrated into the rear portion of the antenna body.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables safe and efficient servicing and replacement of remote radio units while installed, providing clearance for cable connections and preventing falls through secure anchoring, thus streamlining maintenance processes.
Implementation Method 1
pressing the handle(s) upwards assists in ejecting/removing the RRU from the docking station through a cam and follower configuration
Data Source
AI summary
An antenna system having a quick release that removably and reliably connects a Remote Radio Unit (RRU) to an Integrated Antenna Unit (IAU), both mechanically and electronically. The RRU has an RRU connector and the antenna has an antenna connector that removably engages with and mates with the RRU connector. The system has a temporary hanging position that enables a user to connect additional electronic connections to the RRU before it is fully coupled with the antenna.