Automatic Connection Device for High Voltage Switchgear
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Summary
Problems
Current high voltage electrical switchgear connections require numerous manual interlockings for mechanical and electrical connections, which are prone to errors and inefficiencies, especially when transitioning between test and plugged-in positions.
Innovation solutions
A device that automatically hooks a mobile carriage's hook onto a drive nut within a medium or high voltage cell, simultaneously establishing electrical connections between the cell and carriage, using a lever and spring mechanism to ensure constant contact pressure and compensate for dimensional variations, allowing for automatic movement between test and plugged-in positions.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If manual interlocking mechanisms are implemented for mechanical and electrical connections, then connection safety is improved, but device complexity and ease of operation deteriorate due to numerous interlocks and manual procedures
Why choose this principle:
The patent combines the mechanical connection (via hook and nut) and electrical connection (via auxiliary connectors) into a single integrated operation. The hook mechanism and electrical connectors are positioned and designed to engage simultaneously during the carriage insertion, eliminating the need for separate manual interlocking steps while maintaining connection safety through the unified design.
Principle concept:
If manual interlocking mechanisms are implemented for mechanical and electrical connections, then connection safety is improved, but device complexity and ease of operation deteriorate due to numerous interlocks and manual procedures
Why choose this principle:
The connection system is designed to perform self-interlocking through the mechanical engagement of the hook with the nut and the simultaneous alignment of auxiliary connectors. The return means automatically returns the hook to the hooked position on the nut, and the electrical connectors automatically engage without requiring manual intervention, making the system self-sufficient for both mechanical and electrical connection tasks.
Application Domain
Data Source
AI summary:
A device that automatically hooks a mobile carriage's hook onto a drive nut within a medium or high voltage cell, simultaneously establishing electrical connections between the cell and carriage, using a lever and spring mechanism to ensure constant contact pressure and compensate for dimensional variations, allowing for automatic movement between test and plugged-in positions.
Abstract
The present invention relates to a mechanical and electrical connection device of a mobile trolley M carrying electrical equipment to a medium or high voltage cell, this device comprising a drive nut (6) belonging to the aforementioned cell adapted to cooperate with a hook (9) belonging to the aforementioned trolley M to drive the trolley to a position for plugging the equipment into the cell, an electrical auxiliary connector (7) of the cell adapted to cooperate with a complementary electrical auxiliary connector (8) of the mobile trolley M.This device is characterized in that it includes means, called primary, for making the aforementioned hook (9) on the nut (6) automatically engage when the carriage M is inserted into the cell up to the so-called test position in which the equipment is in the cell without being plugged in, and means called secondary, for making at the same time as this engagement, the automatic electrical connection of the two connectors (7,8) respectively of the cell and of the carriage M, in such a way that after this connection, the movement of the connector belonging to the cell becomes dependent on that of the mobile carriage between the so-called test position and the plugged-in position of the equipment, and vice versa between the plugged-in position and the so-called test position.