An investment, exceeding one million pounds, has been completed at the Manchester operationsof European paper machinery maker Voith Paper Limited.
The new process facility will re-grind, to ensure perfect geometry and balance in paper machine rollers of up to 115 tonnes. A 120 tonne safe working load crane plays a crucial role in loading and off loading the Walldrich Siegan roll grinder that will perform the precision roller re-profiling.
Street Crane has a long association with Voith having supplied an 80 tonne overhead travelling crane (OTC) in 1997. Commenting on the installation Steve Walls, Voith Paper’s works manager commented, “The 80 tonne crane installed in 1997 and serviced by Street Crane’s sister company SCX, has given us no trouble. The relationship has always been good and we are happy to be working with them again on this important investment for our Manchester site.”
Safety systems included on the crane include an audible alarm, flashing amber light and an anti-collision system. The brake on the new Voith crane work on the first reduction shaft in the gearbox. This ensures that the load is held securely even in the unlikely event of a motor failure. Operation will normally be by a wire free radio remote device, allowing the operator to adopt the best position for safety and visibility. A conventional pendant control is also provided.
Major structural elements of the crane include twin box-beam girders for rigidity with eight wheel carriages to spread the load. Hoisting is achieved using a heavy duty crab unit based on a twin scrolling open barrel design that ensures that the hook follows a true vertical lift path. Programmable micro processor controllers, allied to digital frequency inverters on the motor drives ensure smooth acceleration and deceleration for safe transport of the load with no load swing.
