Safety divice at universal joint couplings, in particular at drive shafts for agricultural machinery

The invention refers to a safety divice at universal joint couplings, in particular at drive shafts for agricultural machinery with at least an end piece covering a wave joint in form of a first funnel, with a pipe or a hose covering the wave is connected and a second funnel, that at the first funnel is arranged and has the task to arrange the safety divice in such a way that also with so-called wide angle joints the großere bend angles, which can occur in the enterprise cannot cause damage of the safety divice. Admitted safety divices for universal joint--Clutches at drive shafts are provided with a two-piece safety divice, by which one Tell each on a WeUenteil provided with a Gelenkkreuz is arranged. Such safety divices are complex pedantic regarding the manufacturing costs and to handle with the attachment or removing the GelenkweUe. Safety divices for universal joints at drive shafts are further admit with an end piece in form of a first funnel, covering a wave joint, with a pipe or a hose covering the wave are connected and a second funnel, which is firmly connected with the first funnel, whereby the connection takes place via Vernietung or welding. These safety divices do not permit the desired large diffraction angle, which occurs with so-called Weitwlnkelgelenken in the enterprise. An enlargement of the opening diameter at the outside end of the funnel for the achievement of a possible larger diffraction angle cannot be used, because the limited area at the agricultural machinery, available for the funnel, is then exceeded. After the invention the trichterförmige flexible end piece of the first funnel at its free end exhibits a circulating groove during a safety divice of the initially mentioned kind, in which the second funnel intervenes out against Relbungsverschleiß resistant material with its bent end with axial play. With the training according to invention the protection funnel over the universal joint can follow the safety divice also on utilization of the greatest possible joint diffraction of a so-called wide angle joint of this diffraction, without the danger is given to a damage of the trichterförmigen end piece. The end piece remains with its largest outside diameter thereby in the free space specified by the standard around the ZaFfwellenende. By the connection between the two parts of the protection funnel the outside funnel knows a difference movement between the wave and the firmly arranged protective pipe during contact with the circulating wave would drive out. Hiedurch changes the contact surface between funnels and wave continuously, so that by the choice of a material for the funnel, resistant against wear, a long life span is ensured. The protection device is simple in the structure to manufacture inexpensive and easily mountable and/or. dismantlable. A Ausführungsbeispiei of the invention is represented in the design. With the circulating GdenkweUe covering protective pipe --5-- is a trichtefförmiger, dastischer body --1-- connected. The same has a ttrrdaufende groove at its free end --3--, into some further funnel --2-- with his bent end with axial play intervenes. The funnel --2--is made of a material, which is approximately geibungsverschleiß resistant, so that an occasional Berahrung of the funnel --2-- with the diffraction of the wide angle joint at the GelenkweUenflans¢h --4-- without danger of a destruction is possible. By the axial play between the parts --1 and 2-- an additional joint in the funnel, which informal following of the funnel, develops --2-- with larger joint diffractions permits. Thereby that directly with the Schntzrohr --5-- connected smaller, trichterförmige bodies --1-- , become his assembly and connection are made of flexible material both with the protective pipe --5-- and with the part --2-- facilitated.