Central Pivot Pendant Arm Internal Cabling Through Shoulder Castings
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Solution Overview
Problem
Conventional pendant arm systems face issues with cabling exposure, which leads to damage and increased complexity and cost due to the need for external covers, and they often only run cabling for the top and bottom shoulder castings, neglecting those in the middle.
Innovation Solution
The central pivot pendant arm system incorporates a shaft with side openings for internal cabling access, allowing cabling to pass through the shoulder casting and pendant arm, with features like protrusions, removable covers, and dividers to manage cabling securely and efficiently across multiple shoulder castings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cabling is run externally to the shoulder castings, then installation is simpler, but the cabling is exposed to damage and requires external covers increasing complexity and cost
Solution Approach 1:
The cabling is nested within the shoulder casting structure itself. The shaft contains a passageway that runs through the shoulder casting, allowing cables to be routed internally rather than externally. This nesting eliminates the need for separate external covers while protecting the cabling from damage.
Solution Approach 2:
The shaft passageway acts as an intermediary structure that mediates between the need for simple cable installation and the need for cable protection. By providing an internal routing path, the shaft serves as a protective conduit without requiring additional external protective components.
2Device complexity
If cabling is run only for top and bottom shoulder castings, then installation is simpler, but middle shoulder castings lack cabling support
Solution Approach 1:
The shaft passageway design is universal and can accommodate multiple cables serving multiple shoulder castings simultaneously. The same internal routing structure supports cabling for top, middle, and bottom shoulder castings, making the system versatile without proportionally increasing complexity.
Solution Approach 2:
The shaft is segmented with multiple passageways or openings that can independently route cables to different shoulder castings. This segmentation allows each shoulder casting (top, middle, bottom) to have its own cabling path while using the same overall shaft structure.
3Device complexity
If multiple cables are routed through the same opening, then device complexity is reduced, but cable management and separation become difficult
Solution Approach 1:
Different regions of the shaft provide different routing options. The shaft can have larger openings near the top and bottom for easier cable access, while middle sections provide adequate space for cable management. Each local region is optimized for its specific cabling needs.
Data Source
AI summary
A central pivot pendant arm system is provided for running cabling internally within a shoulder casting through a shaft that provides an axis of rotation and cabling access through a side opening in the shaft. The shoulder casting is pivotable about the axis of rotation and partially encloses a portion of the shaft. The shoulder casting has a protrusion for attachment of a pendant arm and facilitates cabling passage inside the shoulder casting, between the shaft side opening and the pendant arm interior.