Hydraulic in-sleeper point machine

The MA-HVH point machine moves the switch rails of railway turnouts using electrically generated hydraulic power, locks them hydraulically and mechanically, and detects their end position electrically.

It is suitable for both simple and large-radius turnouts. The equipment is unique in that, in large-radius turnouts, its actuators move together synchronously even though they are not mechanically connected, so they do not subject the switch rails to additional bending stress.

Our point machines are installed in hollow steel sleepers on the track centre line, so the turnout can be tamped by machine. With the centre of gravity on the track axis, the track is loaded symmetrically, which is very favourable in the long term. The machine is fastened so that it can follow the movement of the switch rail relative to the stock rail caused by thermal expansion.

Types installed so far: individual, 2-phase and 3-phase; large-radius with 2 machines, 3-phase. All these types are trailable, but on request we can supply a non-trailable version.

Main technical data

• Throw time: approx. 2.5 s
• Throw force: 4–6 kN (adjustable)
• Holding force: 7–12 kN (can be increased to 20 kN by replacing parts)
• Mechanical strength of the point machine: 25 kN