| 摘要 |
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.
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