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Ningbo Pecaf Electronic And Technology Co., Ltd.
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Product (371)
- Elevator infrared light curtain (139)
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Escalator operation indicator
(25)
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3Phases voltage monitoring relay
(4)
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- Elevator Buttons (30)
- Braking Resistor (6)
- Elevator Parts (5)
- Others (146)
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Industry news (3)
Blog (14)
Knowledge (30)
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Company Info
Ningbo Pecaf Electronic And Technology Co., Ltd. [China (Mainland)]
Business Type:Manufacturer, Trading Company
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)
Knowledge
Elevator Safety System
1. the overspeed protection device. Different elevator accident in the elevator suddenly falls is relatively much, the consequences are more serious. Speed protection system had a role to play here.
Elevator just like the car, such as the original open 10 yards, but because of the low current and voltage high inrush inrush, computer chaos. Voltage is too high, lift speed accelerates, speeding. "People will feel the lift suddenly drop in the car".
The car faster and faster, but faster than rated speed 10%, automatic mechanical protection devices immediate work, speed limits and safety clamp will let the car stopped. General elevator overspeed run distance does not exceed 3 meters.
2. the buffer. If overspeed protection device, Elevator does not fall in the end, there are remedies.
When the elevator when the rush to the bottom, the car will hit the limit switches have been forced to stop. Main circuit after being cut off, drive to spin.
If momentum is too great, both ends of the shaft or hydraulic spring buffers can be cushioned to absorb kinetic energy to reduce injury.
3. emergency stop devices. When an emergency occurs, press the red stop button in the car, the el evator will be stopped immediately.
4. overload protection device. Car following a weighing device, when overloaded, overload signals will be issued to the control system, prevents the lift from running, and beeps to remind passengers.
1. the overspeed protection device. Different elevator accident in the elevator suddenly falls is relatively much, the consequences are more serious. Speed protection system had a role to play here.
Elevator just like the car, such as the original open 10 yards, but because of the low current and voltage high inrush inrush, computer chaos. Voltage is too high, lift speed accelerates, speeding. "People will feel the lift suddenly drop in the car".
The car faster and faster, but faster than rated speed 10%, automatic mechanical protection devices immediate work, speed limits and safety clamp will let the car stopped. General elevator overspeed run distance does not exceed 3 meters.
2. the buffer. If overspeed protection device, Elevator does not fall in the end, there are remedies.
When the elevator when the rush to the bottom, the car will hit the limit switches have been forced to stop. Main circuit after being cut off, drive to spin.
If momentum is too great, both ends of the shaft or hydraulic spring buffers can be cushioned to absorb kinetic energy to reduce injury.
3. emergency stop devices. When an emergency occurs, press the red stop button in the car, the el evator will be stopped immediately.
4. overload protection device. Car following a weighing device, when overloaded, overload signals will be issued to the control system, prevents the lift from running, and beeps to remind passengers.
