Device, system and method for evaluating vibration of tail end of boom

Abstract

The invention discloses a device, a system and a method for evaluating vibration of a tail end of a boom. The device for evaluating the vibration of the tail end of the boom comprises a signal acquiring unit (10) and a signal converting unit (20), wherein the signal acquiring unit (10) is used for acquiring a rod cavity pressure signal and a rodless cavity pressure signal of a boom cylinder (2) of one arm section (1) of the boom; and the signal converting unit (20) is used for acquiring a cylinder pressure signal according to the rod cavity pressure signal and the rodless cavity pressure signal, and the cylinder pressure signal is multiplied by a pressure displacement conversion coefficient to obtain a displacement signal of the tail end of the boom. The pressure change of the boom cylinder is detected, so that the corresponding displacement signal of the tail end of the boom can be obtained according to the pressure signal, and the displacement signal is used as a signal for representing the vibration of the tail end of the boom so as to evaluate the vibration of the tail end of the boom. The device, the system and the method are simple and practical, distortion does not happen easily for low-frequency vibration, and the conversion precision is higher.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a vibration evaluation device, system and method at the end of a boom. Background technique [0002] Concrete pump truck is a special machine for conveying and pouring concrete, which can continuously transport concrete along the pipeline to the pouring site. At present, concrete pump truck has gradually become an indispensable key equipment in construction. [0003] During the process of pumping concrete by the concrete pump truck, the hydraulic impact and the flow impact of the concrete will cause the boom to vibrate. At present, a variety of vibration control methods for the boom have been developed. In the vibration control process of the boom, the evaluation of the vibration amplitude at the end of the boom is often the key to the vibration reduction effect, that is to say, how to evaluate the vibration at the end of the boom is one of the key technologies. During the ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem of low precision in evaluating the vibration at the end of the boom by obtaining the displacement signal by integrating the acceleration signal in the prior art, and provides a high-precision evaluation device, system and method for the vibration at the end of the boom

Images