| 摘要 |
An agricultural tool comprising a frame (2), at least a work tool (30), a motor group (4) and means for joining (9) which dismountably join the motor group (4) to the frame (2); wherein the means for joining (9) comprise: two flanges (10,12) respectively fixed to the frame (2) and the motor group (4); an external locking ring nut (11) coupled to a first flange (10), and which screws up on a second flange (12), such as to press the flanges (10,12) axially into reciprocal contact; and anti-unscrewing means (114,118,128) comprising a flexible portion (114), with at least hooking tooth (118) which couples with a plurality of teeth (128) on the second flange (12), such as to be able to block the locking ring nut (11) in different angular portions.
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