19.11.2021
The regular maintenance work on the steel structure of the mountain station on the Zugspitze could be completed much faster than usual this year. At Germany's highest workplace at 2,943.75 metres above sea level, ITH Schraubtechnik supported the inspection of the bolted connections with qualified technical advice, fast service and flexible bolting tools.
The maintenance work was comprehensively accompanied by ITH Bolting Technology:
Bolted connections of different nominal diameters are installed in the supporting structure of the mountain station.
These range from M36-SW55 to M64-SW95 (d 1 1/8”, A/F 2 1/5” to d 2 3/8”, A/F 5 3/8”);
the torques to be applied are between 2,800 Nm and 14,762 Nm (2,065 ft*lbs and 10,888 ft*lbs).
A total of six different bolt configurations could be controlled with two ITH hydraulic torque wrenches (HTW) and a battery-powered hydraulic unit:
The use of the ITH Hydro-DAX V18 Battery high-pressure hydraulic power unit eliminated the need for time-consuming routing of power supplies.
This significantly accelerated the inspection process. The electric drive's load-sense technology continuously adjusts the motor's speed to the load to be applied - which has a positive effect on the battery's charge level.
The ITH battery-powered high-pressure hydraulic unit of the type Hydro-DAX V18 Battery could also be used with the different operating principles (single-hose and two-hose system).
"The development concept of the power unit deliberately included different applications. Hydraulic multi-purpose lifting cylinders can also be operated with the power unit," explains ITH general manager Frank Hohmann, who runs the family-owned business together his brother Jörg Hohmann.
"The flexibility and battery operation are a clear advantage for service work on bolted connections. We are pleased that the concept has proven itself and that the customer could realize a significant time reduction."
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