DISTRIBUTING BOOM FOR CONCRETE PUMPS Russian patent published in 2017 - IPC E04G21/04 B66C23/62 

FIELD: machine building.

SUBSTANCE: invention relates to distribution boom for stationary or mobile concrete pumps. Distributing boom consists of rotating around in form of vertical axis of rotation of rotary head and consisting of several rotary relative to each other or telescopic boom sections of sectional package. Sectional package on one end of its first section is pivoted to rotary head and by means of articulated with its ends in every pivot joint rotary head and first section of first cylinder/piston assembly can turn around horizontal axis of joint between in fact, horizontally oriented folded position and working position. On first section of boom act, at least one auxiliary lifting element, which is active at certain way of turning, starting from its folded position, and which both articulated with rotary head and without fixation adjoins contact point on first section, or hinged to first section and without fixation adjoins contact point on rotary head.

EFFECT: purpose of invention consists in providing possibility of reducing acting on first section of boom cylinder/piston assembly.

9 cl, 2 dwg