Abstract: A method and a device for assembling a structure that is formed from several modules that are disposed on top of each other, e.g. a wind power plant. An auxiliary mast of modular construction is erected parallel to and laterally of the structure to be erected, wherein the length of an auxiliary mast module approximately corresponds to the length of a structural module. A respective auxiliary mast module is previously detachably connected to a respective structural module to form an overall module, such that the auxiliary mast module can accept the weight of the structural module. The overall modules that are each formed from one auxiliary mast module and one structural module are moved by means of the lifting gondola in an upward direction along the auxiliary mast of previously erected structural modules to the level of the assembly position.

Abstract: The invention proposes a method and a device for assembling a structure that is formed from several modules that are disposed on top of each other, e.g. a wind power plant, wherein a first module of the structure is initially erected and at least one further structural module is subsequently disposed onto the first structural module or the previously erected structural modules by moving at least the at least one further structural module by means of a lifting gondola in an upward direction to the level of its assembly position such that contact between the lifting gondola and the previously erected structural module(s) is prevented at least during movement of the lifting gondola.

Abstract: The present invention provides a disassemblable camshaft for internal combustion engines features a cylindrical shaft which in a single operation can be inserted in the bearing bores and cams arranged in between, so that undivided bearings of relatively small diameter can be used. The cams are joined in rotationally fixed fashion to the shaft by pinch-fitting them on the shaft. Transverse screw joints utilizing tensionally stressed clamping screws improve the fixed joint between the cam and both the conic sleeve and shaft. The screw joints are fashioned in a manner such that no additional construction space is needed as compared to conventional camshafts and assembly can be performed with only standard tools.