Improvement and research of a suspension-shock absorber for attaching a hydraulic hammer to an excavator

Abstract

Problem. The article proposes a developed construction of a suspension – shock absorber, which made it possible to install a hydraulic hammer as a working equipment, simultaneously isolating it from vibrations.
 A mathematical model of the system was developed, the basis of which is a suspension – shock absorber for attaching a hydraulic hammer to an excavator, which includes modeling of its mechanical system. Goal. The goal is the development and research of a sub-axle - shock absorber for the attachment of hydraulic hammer equipment (hydraulic hammer) to an excavator. Methodology. The solution of the set problems involved the creation of a mathematical model of the vibration system and its implementation using the MathCAD application program. Originality. It is proposed to transform the differential equations of the mathematical model of the vibration system by the method of decreasing order and as a result obtain the displacements, velocities, and accelerations of individual elements and obtain the nature of the change in the disturbing force of the vibrating hammer. Using the MathCAD program, a study of the dynamics of the system, which includes a hydraulic ham a shock absorber and an excavator, was performed, as well as the frequencies of free oscillations of the system in question were determined. Practical value. The obtained results of scientific research on vibration protection of excavators, which are operated with attached shock devices (hydraulic hammers), with the use of the MathCAD mathematical program, can be successfully used in the development, as well as in the determination of dynamic loads of similar vibration protection systems used in industry.