| 摘要 |
A beam of single-bucket excavator has two side elements with mounting openings connected to each other by means of metal sheet in such way that those form eyes for fixation to rotary column of base machine and hydro-cylinder for handle control. To the side elements beam with box cross-section is attached, this has mounting openings for connection of hydro-cylinder for beam control. To the beam holder is welded, for connection of handle, this is arranged as continuous made by casting fork-like element, this has flat base and two tailpieces, and inside - reinforcement elements, at the tailpieces bosses are arranged, with openings for handle fixation by means of pin. The holder and the beam are additionally connected by reinforcement ribs and plates.
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