Switchgear Mobile Pole Load Distribution Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing switchgear structures have a short mechanical service life and are prone to breaking due to round trip dynamic effects, limiting their number of opening and closing cycles, which is inadequate for industries requiring higher endurance, such as the wind turbine sector.
Innovation Solution
A switchgear mobile pole design featuring a pole cage with parallel lateral walls and flanges, where the flanges are connected using load take-up devices with centering and fixing parts that align with centering holes, enhancing mechanical endurance by distributing loads effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If traditional switchgear structures are used, then the device complexity is low, but the mechanical service life is short due to round trip dynamic effects causing breakage
Solution Approach 1:
The mobile pole is divided into separate components: a pole cage body and multiple flanges connected by load take-up devices. This segmentation allows each component to be optimized independently and distributed the mechanical stresses across multiple connection points, enhancing overall durability without excessive complexity
Solution Approach 2:
The flanges are nested within the pole cage structure, with centering holes positioned inside the pole cage walls. The load take-up devices connect the flanges to the pole cage through these nested centering holes, creating a compact integrated structure that improves mechanical endurance while maintaining reasonable complexity
2Reliability
If traditional fixing methods are used, then the device complexity is low, but the reliability decreases due to pole cage breakage from dynamic loads
Solution Approach 1:
The centering holes are pre-positioned within the pole cage walls during manufacturing, and the load take-up devices are pre-configured with centering parts. This preliminary preparation ensures proper alignment and load distribution from the first operation, preventing progressive failure under dynamic conditions
Solution Approach 2:
The load take-up devices act as intermediaries between the flanges and the pole cage body. These devices include centering parts that engage with the pre-positioned centering holes, mediating the connection and distributing dynamic loads evenly across the pole cage structure, thereby preventing breakage
Data Source
AI summary
A mobile pole of a switchgear that includes a pole cage comprising two parallel lateral walls, at least one of which delimits at least one centering hole defining a centering axis and an interior volume; a support leg, the pole cage being constrained to rotate with the support leg; and two flanges, each being configured to be connected to a respective lateral wall of the pole cage and including fixing members being configured to cooperate with the at least one centering hole, at least one of the fixing members being a load take-up device including a fixing part defining an insertion axis and a centering part adapted to cooperate with the fixing part and being configured to be inserted at least partly into the interior volume of the at least one centering hole with which said at least one of the fixing members is configured to cooperate so that the insertion axis of the centering part is aligned with the centering axis of the centering hole with which said at least one of the fixing members is configured to cooperate.