HyPower supplied a special jacking installation to a client who specializes in the infrastructure maintenance, which was designed entirely according to the wishes of this client.

In this case, the customer required a hydraulic system to lift a bridge. Precise control of the jacks was needed to avoid damage to the structure, moreover other important requirements were ease of use and quick parameters adjustment.

An additional challenge was that the number of jacks to be controlled per jacking group would not always be the same.

Together, Europress and HyPower have designed a central control unit for this purpose, which controls the jacks and the individual HPUs that activate and control the three cylinder-groups independently of each other.

Each HPU has its own frequency controller on the central control unit, which can vary the flow rate to each cylinder-group by approximately 60% using an easy-to-use potentiometer.

The system consists of:
– a battery of 100-ton locknut-cylinders with a low construction height CGR series,
– a central control unit with three 3/3-way manual valves, adjustable return valves, pressure gauges and frequency controllers,
– various distribution hoses and distribution blocks
– three HPUs that are controlled from the manually operated central control unit

HyPower is our official Distributor for The Netherlands.