A mechanical interlocking device for preventing dragging of a power unit and a driving interlocking control system

CN122436745APending Publication Date: 2026-07-21JIANGSU TIANYI AIRPORT SPECIAL EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU TIANYI AIRPORT SPECIAL EQUIP CO LTD
Filing Date
2026-06-24
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing aircraft ground power units, the reset status of the power supply connectors cannot serve as a valid input signal for the flight control system, leading to misoperation and dragging accidents. Furthermore, the detection device is susceptible to environmental factors, resulting in poor detection accuracy and reliability.

Method used

Design a mechanical interlock device for preventing dragging of power units, including a mechanical interlock component and a travel interlock control system. The mechanical interlock component is linked with the travel mechanism, and the automatic control of the power supply connector status is achieved by using limit switches and actuators. Electrical interlock is achieved by combining position sensors and relays to provide reliable interlock signals.

Benefits of technology

It realizes automatic interlock control between the power supply connector return status and the unit's operation, reduces the risk of misoperation, improves the safety and automation of unit operation, and ensures that the power supply connector status accurately reflects the locking status of the driving mechanism.

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Abstract

The application relates to the technical field of control system equipment, in particular to a mechanical interlocking device for preventing dragging of a power unit and a running interlocking control system. The mechanical interlocking device comprises a mechanical interlocking assembly arranged on one side of a power connection protection box. The mechanical interlocking assembly comprises a trigger and a linkage. The trigger is arranged towards the opening side of the power connection protection box to abut the power connection. The trigger and the linkage are linked to drive the linkage to produce corresponding action when the trigger is displaced by the power connection. The mechanical interlocking assembly, the power connection protection box and the running mechanism are cooperated to realize mechanical interlocking control of the power connection homing state and the unit running, and solve the problem of the mechanical interlocking structure of the existing power unit without connection and running, and the dragging accident caused by the non-homing of the connection.
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