Shallow pit elevator bottom maintenance safety protection system and method
The microcontroller-controlled low-level maintenance safety protection system uses multiple signals and prompts to ensure that the elevator car in the shallow pit remains stationary at a designated position, thus solving the safety risks during maintenance and enabling maintenance personnel to enter and exit safely.
CN122233242APending Publication Date: 2026-06-19THYSSENKRUPP ELEVATORS SHANGHAI CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THYSSENKRUPP ELEVATORS SHANGHAI CO LTD
- Filing Date
- 2024-12-18
- Publication Date
- 2026-06-19
Smart Images
Figure CN122233242A_ABST
Abstract
This invention relates to a safety protection system and method for bottom-level maintenance of a shallow pit elevator. The system includes a microcontroller, a bottom-level maintenance switch, landing door lock contacts, a mechanical stop device, a stop button, and an audible alert device. At different stages of receiving signals from the bottom-level maintenance switch, the landing door opening signal, the stop button, and the mechanical stop device, the microcontroller generates a first or second alert signal and sends it to the audible alert device. The audible alert device generates a first alert sound under the control of the first alert signal and a second alert sound under the control of the second alert signal. This invention uses different alert sounds to remind maintenance personnel whether they can enter the bottom of the shaft for maintenance work, thereby ensuring the safety of personnel entering the bottom of the shaft for maintenance.
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