| 摘要 |
The invention relates to a coupling device applied in a hydraulically or pneumatically driven ground-working tool with at least one passage for a medium, comprising a shaft (1), an outer sleeve (3), an inner sleeve (5), all provided with at least one channel and connecting means for the channels, wherein in the shaft, the outer sleeve and the inner sleeve a transverse hole is arranged practically perpendicularly of the longitudinal direction and the device further comprises a locking pin for insertion through the transverse holes. <IMAGE>
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