Patent ID: 9062465
Filing Date: 2015-06-23
Classification: B66C,E04G,Y10T

Abstract:
1. A distributing boom for stationary or mobile concrete pumps comprising: a rotary head which is rotated about an axis of rotation comprising a vertical axis, an arm assembly which is made up of a plurality of boom arms which are telescoped or pivoted relative to one another, wherein the plurality of boom arms comprises a first boom arm and the arm assembly has one end of the first boom arm articulated on the rotary head, a first cylinder/piston unit having ends articulated at points of articulation of the rotary head and of the first boom arm, wherein the first cylinder/piston unit pivots the arm assembly about a horizontal axis of inflection between a substantially horizontally oriented retracted position and an operating position, and at least one displacement-assisting element acting on the first boom arm, wherein the at least one displacement-assisting element is effective over a defined pivoting range, starting from a retracted position of the first boom arm, and is articulated either on the rotary head and bears freely against a contact point on the first boom arm or is articulated on the first boom arm and bears freely against a contact point on the rotary head.