Oleo Hydraulic Buffers


Hydraulic buffer installed on ship loader

Oleo Hydraulic Buffers

Oleo Hydraulic buffers absorb all the energy of an impacting body by dissipating the energy internally and stops the impacting body with no damage to the impacting body itself whatsoever.

The industrial buffers are sealed units and are maintanance free. They can handle many impacts on a daily basis and will typically last 10 to 15 years, under normal conditions, with no maintanance required. The buffers are designed and specified according to each individual application to ensure that the buffers will absorb whatever the particular installation can throw at them.

The buffer works on a simple principal of forcing oil from one chamber to another under high pressure with a tapered pin through the centre of the orifice, which gradually restricts the flow. Restricting the oil flow results in the absorption of the impact energy.

The buffers can be tailor-made to suit any environment or impact situation as long as the impact direction is in a straight line. The only limitiation is that no buffer can absorb impact speeds of more than 5m/s.

Horne is only one of two companies outside of the UK that is certified to repair the buffers should they require maintenance.

For more info on Oleo industrial buffers visit: www.oleo.demon.co.uk/industrial/index.htm

Oleo Sliding Rail End Stop

The rail end stop is intended as the final safety mechanism in a rail line impact. The impact energy is absorbed by friction clamps installed on the rail and on the Oleo hydraulic buffer.

The number of clamps and torque required per clamp is determined by the mass and impact speed of the run-away train. The endstop can accomodate impact masses of up to 3000 tons and speeds of up to 25km/h. The critical aspect in the design of the endstop is the available "stroke". The longer the available stroke, the more energy that can be absorbed.

After impact, the end stop needs to be inspected and recalibrated to its original settings. The rail endstop is virtually maintenance free. The rail is not damaged in any way after repeated impacts and the train does not derail during deceleration after the impact. The deceleration forces are generally kept below 1G for the sake of the passengers on the train.

For more info on Oleo rail end stops visit: www.oleo.demon.co.uk/rail/R18.htm