| 摘要 |
<p>An attachment part (10) for tightening joints, comprising: an elongate housing (11,12) including an upper housing part (11) and an interconnected lower housing part (12), - an input gear wheel (22) for connection to an output shaft of a power wrench, which input gear wheel is arranged at a first end of the housing, an output gear wheel (23) for connection to a joint to be tightened, which output gear wheel is arranged at a second end of the housing, and at least one intermediate gear wheel (24,25,26), which is arranged inside the housing (11,12) to transmit the rotation of the input gear wheel (22) to the output gear wheel (23), wherein each gear wheel (22-26) has outer slanted teeth that connect the gear wheels and transmit said rotation there between. The intermediate gear wheel (24,25,26) comprises: an upper race (27) facing the upper housing part (12), wherein balls (28) are arranged inside said upper race (27) to support an upper part of the at least one intermediate gear wheel (24,25,26) with respect to the housing (11,12), and a lower race (52) facing the lower housing part (12), wherein balls (38) are arranged inside said lower race (52) to support a lower part of the at least one intermediate gear wheel (24,25,26) with respect to the housing (11,12).</p> |
