Traction elevators and hydraulic elevators both have high safety performance guarantees, but each has its own characteristics and advantages. The following is a detailed comparison of the safety of the two:
1、 Safety protection device
Traction elevator:
Traction elevators have multiple safety protection devices, such as speed limiters, safety clamps, buffers, etc. These devices can quickly activate protection mechanisms in case of elevator overspeed, loss of control, etc., ensuring passenger safety.
The traction machine of the traction elevator has multiple protection measures such as overload protection and rope breakage protection. When abnormal situations occur during the operation of the elevator, the traction machine will automatically stop working.
Traction elevators use multiple steel wire ropes to jointly support the car, so even if one steel wire rope breaks, the other steel wire ropes can still bear the weight of the car, reducing the risk of elevator falling.
Hydraulic elevator:
Hydraulic elevators also have a comprehensive safety system, such as overload protection function in the hydraulic system. When the car load exceeds the set value, the system will automatically stop working.
Hydraulic elevators are equipped with specialized speed limiters. When the elevator’s operating speed exceeds the set value, the speed limiter will automatically start, causing the elevator to stop running.
As the main load-bearing component of elevators, hydraulic cylinders have high material and process requirements. Under normal use conditions, the failure rate of hydraulic cylinders is low, ensuring the safety of elevators.
2、 Response and braking performance
Traction elevator: Due to the use of advanced control technology and driving methods, the response speed and braking performance of traction elevators are usually better than hydraulic elevators. In emergency situations, the traction elevator can activate the protection mechanism more quickly and stop running.
Hydraulic elevator: The response speed and braking performance of hydraulic elevators are relatively slow. In emergency situations, hydraulic elevators may take longer to respond and brake.
3、 Fire and explosion resistance performance
Traction elevator: Special attention should be paid to fire and explosion prevention issues in the electrical system of traction elevators. However, due to the fact that the driving method of traction elevators does not directly involve flammable and explosive substances, their fire and explosion risks are relatively low (but electrical safety protection measures still need to be taken).
Hydraulic elevator: The hydraulic elevator is driven by a hydraulic system, and the hydraulic oil circulates in a closed oil pipe without generating electric sparks, thus reducing the risk of fire. In addition, the hydraulic system itself also has certain explosion-proof performance.
4、 Applicable scenarios and security considerations
Traction elevator: Traction elevators are suitable for high-rise buildings and commercial buildings. In these situations, elevators are used more frequently and have higher requirements for safety and stability. Traction elevators can meet these requirements due to their efficient and stable driving mode and multiple safety protection devices.
Hydraulic elevator: Hydraulic elevators are suitable for low rise buildings, homes, or small office buildings. In these situations, when the frequency of elevator usage is relatively low, there are special requirements for the location of the machine room, or initial investment costs need to be saved, hydraulic elevators may be a better choice. However, it should be noted that hydraulic elevators may require higher maintenance costs (such as hydraulic oil replacement and repair) during later operation.
In summary, both traction elevators and hydraulic elevators have advantages in terms of safety performance. Traction elevators perform well in response speed, braking performance, and multiple safety protection devices; Hydraulic elevators have advantages in fire and explosion prevention. When choosing an elevator, it is necessary to comprehensively consider factors such as the actual situation of the project, user needs, and budget. At the same time, regardless of the type of elevator chosen, it is necessary to ensure its quality and reliable after-sales service, and regularly maintain it to ensure the safety of passengers.
