Tool holder with hydraulic coupling means

B - Operations – Transporting – 66 – C

Patent

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Details

B66C 13/14 (2006.01) B66C 3/00 (2006.01) B66C 23/66 (2006.01) E02F 3/36 (2006.01)

Patent

CA 2514722

The invention relates to a tool holder for cranes. The tool holder comprises hydraulic cylinder means (16a, 16b) arranged to detachably be able to lock a tool to the tool holder. Furthermore, hydraulic coupling means (17a, 17b) is comprised arranged to be connected with hydraulic coupling means (20a, 20b) on the tool and hydraulic line means (24a, 24b). The object of the invention is, among other things, to reduce the number of requisite lines in the hydraulic line meansr. According to the invention, the tool holder comprises furthermore valve means (9) provided with switching means (1Oa, 1Ob) arranged to connect the hydraulic line means (24a, 24b) either to the hydraulic cylinder means (16a, 16b) or to the hydraulic coupling means (1 7a, 17b) of the tool holder. Thereby, the same hydraulic line means may be used for the locking i 5 function and the tool. The invention also relates to a crane provided with such a tool holder as well as use of the tool holder.

Porte-outil pour grues, qui comporte des vérins hydrauliques (16a, 16b) conçus pour verrouiller de manière détachable un outil sur le porte-outil. De plus, des éléments de couplage hydraulique (17a, 17b) sont conçus pour être raccordés à des éléments de couplage hydraulique (20a, 20b) situés sur l'outil et à des conduites hydrauliques (24a, 24b). L'objet de la présente invention est, entre autres, de réduire le nombre de conduites hydrauliques nécessaires. Selon la présente invention, le porte-outil comporte en outre des soupapes (9) pourvues d'éléments de commutation (10a, 10b) conçus pour raccorder les conduites hydrauliques (24a, 24b) soit au vérin hydraulique (16a, 16b), soit à l'élément de couplage hydraulique (17a, 17b) du porte-outil. Par conséquent, les mêmes conduites hydrauliques peuvent être utilisées pour la fonction de verrouillage et pour l'outil. La présente invention concerne également une grue pourvue d'un porte-outil de ce type ainsi que l'utilisation dudit porte-outil.

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