Propulsion mechanism and unit assembly for low voltage switchgear

By adjusting the structural design of the low-voltage switchgear propulsion mechanism, the problem of inconsistent lifting and connection stroke of the unit during the propulsion process was solved, achieving higher connection reliability and equipment stability, reducing temperature rise, and extending equipment life.

CN117239607BActive Publication Date: 2025-10-10CHANGZHOU XINYUANXING ELECTRICAL APPLIANCES CO LTD
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Patent Information

Application Number
CN202310586430.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-23
Publication Date
2025-10-10
Estimated Expiration
2043-05-23

AI Technical Summary

Technical Problem

The existing manual propulsion mechanism of low-voltage switchgear causes the unit to lift up during the propulsion process, resulting in large propulsion resistance and inconsistent connection stroke, which affects the plug connection reliability of the main circuit connector and the operating life of the equipment.

Method used

A propulsion mechanism for low-voltage switchgear is designed. By adjusting the position of the propulsion screw and the slotted positioning piece and coordinating the gear transmission mechanism, the propulsion force is aligned with the axis of the main circuit connector. A positioning block is added to the rear plate of the unit to control the connection stroke deviation, and the sliding post hook guide is combined to balance the unit movement.

Benefits of technology

It effectively reduces the unit propulsion resistance, ensures the consistency of the connection stroke, improves the reliability of the main circuit connector and the stability of equipment operation, reduces temperature rise, and extends the life of the equipment.

✦ Generated by Eureka AI based on patent content.
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Abstract

The application relates to a pushing mechanism and a unit assembly for a low-voltage switch cabinet, wherein the pushing mechanism comprises an operating rod, a pushing screw rod assembly and a slot type positioning piece; the pushing screw rod assembly is installed at an effective position in the middle of a unit rear plate; the operating rod is used for transmitting a hand-operated pushing operation force to a gear transmission mechanism; the gear transmission mechanism drives the pushing screw rod from bottom to top; and the slot type positioning piece is installed on the unit chamber rear plate and located above the pushing screw rod. The beneficial effect is that the pushing force F generated by the pushing mechanism can effectively suppress the plugging resistance of a main circuit connector, the unit lifting can be suppressed, the unit pushing resistance is reduced, the slot type positioning piece is located above the pushing screw rod, the connection stroke deviation of the unit is less than 1.0 mm, the plugging reliability and stability of the main circuit connector are effectively guaranteed, the technical target that the temperature rise of the 630A main circuit connector is reduced by more than 5k is achieved, the overheat failure of the equipment is greatly reduced, and the operation reliability and safety of the equipment are greatly improved.
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