Safety Elevator Parts Hydraulic Elevator Buffer Oil Buffer For Passenger Elevator

The elevator hydraulic buffer is a crucial safety device designed to safely absorb and dissipate kinetic energy when an elevator car or counterweight reaches its terminal landing at excessive speed, preventing abrupt stops and potential damage. Installed at the bottom of the elevator pit, this energy-absorbing mechanism serves as the last line of defense in the elevator safety system.

Working Principle & Design

Hydraulic buffers operate on the principle of fluid dynamics, utilizing a piston-cylinder mechanism filled with high-grade hydraulic oil. When engaged, the descending elevator compresses the piston, forcing oil through precisely calibrated orifices to create controlled resistance. This converts kinetic energy into heat energy, ensuring a smooth, gradual deceleration.

Key Features & Benefits

• Progressive Deceleration: Provides non-linear resistance for optimal energy absorption

• Automatic Reset: Self-repositioning design allows immediate reuse after activation

• Maintenance-Free Operation: Sealed construction prevents fluid leakage and contamination

• Adaptive Performance: Maintains consistent buffering capacity across temperature variations

Technical Specifications

• Load Capacity: Typically rated for 0.5-10 m/s impact speeds

• Stroke Length: Ranges from 150-1000mm depending on elevator speed

• Fluid Type: High-viscosity, temperature-stable hydraulic oil

Safety Compliance

Manufactured to meet rigorous international standards (EN 81-20/50, ASME A17.1), hydraulic buffers undergo stringent testing for:

• Impact absorption efficiency

• Corrosion resistance

• Fire safety ratings

• Endurance reliability

FAQ
1. Are the elevator wire ropes durable?
The elevator wire rope has special provisions and requirements. Configuration is not only for wire rope and rated load, but also considered the size of the traction, as a result, the tensile strength of wire rope is greater than the weight of the lift. The safety factor is equipped with more than four wire rope. So it won’t break at the same time.
2. Is it dangerous for power failure suddenly during the elevator running?
If it occurs, the elevator will automatically stop due to the electrical and mechanical safety device. In case of power failure,elevator brakes will automatically taken. In addition, the power supply departments such as planned outage, prior notice are also operating.
3. Will us be hurt when it closed suddenly?
In the closing process, if people touch the hall door, the door of elevator will automatically restart without any danger. With anti clamping switch, once the gate touched, this switching action make the elevator unable to be closed and even reopened. In addition, closing force is also available here.
4. How the elevator running?
Elevators are operated with a counterweight wire rope through the (tractor) traction drive, making ups and downs on the guide rail.
5. Is the escalator installation complicated?
We believe the functions of an escalator are not necessarily proportional to the operation complexity. Therefore, escalators designed by us apply an integrated structure, so that the equipment is more precise and more efficient and allows easier and more convenient commissioning.
6. Do you have any cerifications?
Yes, we do with ISO9001 / CCC / CE Certificates for u.