Patent ID: 8037682
Filing Date: 2011-10-18
Classification: B66C,E04G,F04B,F15B,F16F

Abstract:
1. A method for suppressing vibration of a boom of a concrete pump truck, comprising the steps of: connecting a boom cylinder with a vibration suppression cylinder via piping lines, wherein a rod side chamber as well as a non-rod side chamber in the boom cylinder are in communication with a rod side chamber as well as a non-rod side chamber in the vibration suppression cylinder, respectively; monitoring information about hydraulic pressure in the boom cylinder and/or information about changing of concrete pumping direction by a pressure sensing unit in real time; transmitting the monitored information about hydraulic pressure and/or the information about changing of concrete pumping direction to a control unit for vibration suppression cylinder; configuring the control unit for the vibration suppression cylinder to analyze and process the monitored information and then adjusting volumes of the rod side chamber and the non-rod side chamber in the vibration suppression cylinder and correspondingly changing volumes of the rod side chamber and the non-rod side chamber in the boom cylinder such that the vibration suppression cylinder and the boom cylinder generates a pulsed vibration; wherein the pulsed vibration from the vibration suppression cylinder and the boom cylinder causes a pulsed vibration at the end of the boom, and the pulsed vibration at the end of the boom is less than or equal in amplitude to a vibration caused by an intermittent concrete supply at the end of the boom and is reversed in phase with respect to the vibration caused by the intermittent concrete supply at the end of the boom.