FIELD: machine building.
SUBSTANCE: working machine comprises a main bar with a rotary shaft, a tool unit installed on the one end of the main bar, a drive unit installed on the other end. The main bar comprises the first and second separate bars and a coupling element attached to the second separate bar. The coupling element is fitted by a through hole so that to allow for the insertion of the first bar on one side. The first bar consists of a positioning element to travel in the direction to the coupling element fitted with a positioning hole. The coupling element is also fitted by a guide groove passing from the positioning hole in the direction to one side of the through hole. The groove section is a section made so as to provide for the positioning element leaving the guide groove. The coupling element comprises a positioning element to travel in the direction to the first separate bar. The first bar comprises a positioning hole to get engaged with the positioning element. The guide groove passes from the positioning hole in the direction to the end of the first separate bar and is made so that to guide the positioning element to the positioning hole. The coupling element comprises a through hole, a positioning hole and a guide groove.
EFFECT: simple connection of the first and the second separate bars.
7 cl, 14 dwg
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Authors
Dates
2014-06-27—Published
2011-05-26—Filed