1. The Core Role of SHUYI Elevator Limit Switch
Elevator safety relies on precise position control, and the elevator limit switch is a key component to achieve this. SHUYI elevator limit switch acts as a “safety guard” for elevators, preventing overtravel of the car.
It monitors the elevator’s running path in real-time. When the car approaches the top or bottom floor of the shaft, the switch triggers a signal to slow down or stop the elevator.
This avoids collisions between the car and the shaft top or bottom, which is essential to protect passengers and equipment from potential risks.
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2. How SHUYI Elevator Limit Switch Works
The switch is installed at specific positions in the elevator shaft, usually near the top and bottom terminal floors. It uses mechanical contact or non-contact sensing to detect the car’s position.
When the elevator car moves to the sensing range of the switch, the switch’s actuator is triggered. This converts mechanical motion into an electrical signal and transmits it to the elevator control system.
The control system then responds immediately—adjusting the elevator’s speed or cutting off the running power to ensure the car stops at the safe position.
3. Key Safety Applications in Elevator Systems
It plays a vital role in terminal limit protection. When the elevator fails to stop at the designated floor and continues to move upward or downward, the switch activates the emergency stop function.
In door zone control, it coordinates with door opening mechanisms. The switch confirms the car is aligned with the floor before allowing the doors to open, preventing passengers from stepping into the gap.
It also assists in maintenance. During elevator inspection, technicians can use the switch to fix the car at a specific height, ensuring safe maintenance operations.
4. Design Advantages of SHUYI Elevator Limit Switch
Durability is a standout feature. It uses high-strength zinc alloy housing, which resists corrosion from moisture in the shaft and reduces wear caused by long-term use.
Anti-vibration performance is optimized. The internal components are fixed with shock-absorbing structures, avoiding false triggers caused by elevator operation vibration.
It has a wide temperature adaptation range. From -20°C to 60°C, the switch maintains stable performance, adapting to different environmental conditions of buildings.
5. Installation and Maintenance Guidelines
Installation requires precise positioning. The switch must be aligned with the elevator car’s trigger component to ensure accurate sensing, and the installation bracket should be fixed firmly to prevent loosening.
Regular inspection is necessary. Check the switch’s contact status and wiring every three months to avoid poor contact due to dust or wire aging.
Replacement should follow standards. When the switch reaches its service life (usually 5-8 years), replace it with genuine SHUYI parts to ensure consistent safety performance.
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Zhejiang SHUYI Electric Co., LTD, Focus On Switches With 30 Years.
