| 摘要 |
Mechanical positioner device for wrench units which screw, or screw partially, the nuts on the bolts to connect rails to sleepers, which is suitable to be fitted to machines or units delivering clamping components and/or to machines which bolt the rails to the sleepers, and comprises a support (21) able to oscillate crosswise to the axis of a rail (11) and bearing a positioner lever (27) suitable to oscillate lengthwise to such rail (11) and able to cooperate with an end (114) of a lodgement (14) for a bolt (17). |
