Daimlerchrysler Aerospace Airbus Gmbh

Claas Hiestermann

Husnu Can

Meiko Kaninck

Mario Meyer

Marc Peters

Ralf Von Borstel

Falco Sengebusch

Frank Kuehn

Reinhard Czaja

A connection bolt arrangement typically used for connecting two structural members to each other, for example in aircraft construction, includes a conically tapered connection bolt that is force-locked or frictionally engaged in an expansion sleeve so as to cause a radial outward expansion of the sleeve and thereby tightly hold the structural components. An apparatus for releasing such a connection bolt arrangement includes two levers that are pivotably connected to each other, a stamping actuator arranged between respective first ends of the two levers, a pulling extraction device mounted at the second end of the first lever, and a pushing block mounted at the second end of the second lever. The actuating force applied by the actuator is transmitted through the levers and applied to the connection bolt and to the expansion sleeve in opposite directions so as to tend to push the bolt out of the sleeve. The extraction device additionally applies a tension pulling force to the connection bolt relative to the expansion sleeve. The combination of the pressing forces and the tension pulling force releases the connection bolt from the expansion sleeve. The tension pulling force is developed by applying a turning torque to the extraction device.

Method and apparatus for loosening and removing connection bolts

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Ahausen, Germany

Claas Hiestermann