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:
| Stroke(mm) | 210 |
| Rated speed(m/s) | ≤1.75m/s |
Permitted P+Q(kg) | 600~3500 |
Free height A(mm) | 610 |
Mounting dimension CxB(mm)/D | 90x90 4φ 14(mm) |
CE Certifcation | Yes |
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.
