Elevator landing door impact protection device
By using a double-layer door contact and control cabinet design, the problem of elevator landing door anti-collision function failure caused by sensor malfunction was solved, realizing fast and sensitive anti-collision detection response, and improving elevator safety and maintenance efficiency.
CN117699615BActive Publication Date: 2026-06-09SHANGHAI MITSUBISHI ELEVATOR CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MITSUBISHI ELEVATOR CO LTD
- Filing Date
- 2023-11-24
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
Existing elevator landing door anti-collision devices cannot detect in a timely manner when sensor malfunctions or mechanical errors cause functional failures, resulting in safety hazards and maintenance difficulties.
Method used
The system employs a double-layer door contact and control cabinet design. By monitoring the door status and sensor signals, it enables the detection of sensor faults and sensitive response to anti-collision functions, avoiding delayed actions.
Benefits of technology
It enables accurate identification of sensor malfunctions and rapid response to collision avoidance, thus avoiding safety risks and maintenance difficulties caused by functional failures.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117699615B_ABST
Abstract
The application discloses an elevator landing door anti-collision device, which comprises a control cabinet, a landing power supply, a landing door anti-collision sensor, a first landing door contact and a second landing door contact. The landing door anti-collision sensor is provided with a detection sensor, a first sensor contact and a second sensor contact. The detection sensor is used for detecting whether an object has a tendency to approach and collide with the landing door. When the detection sensor detects that the object has the tendency to approach and collide with the landing door, the first sensor contact and the second sensor contact are disconnected. When the detection sensor does not detect that the object has the tendency to approach and collide with the landing door, the first sensor contact and the second sensor contact are closed. When the control cabinet opens the detection function of the elevator landing door anti-collision device, if the first signal interface on the control cabinet side or the second signal interface on the control cabinet side is at a low level, the control cabinet controls the opening of the elevator car door, thereby driving the opening of the landing door of the floor.
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