2012•Coal Mine MachineryRequires access

NVH Improvement of Hydraulic Excavator Based on Modal Analysis of Rotary Platform

XU Xiao-cheng

Abstract

For problem of bad NVH performance in hydraulic excavator cab,analyzed vibration transmission path from engine to cab,and judged rotary platform was possible factor to NVH problem.Modal analysis was carried for rotary platform,natural frequency and mode shapes were calculated.Compared result with excitation frequency of engine,conclusion was made that rotary platform resonance was one of influencings to problem.Then,structure of rotating platform was modified to make natural frequency escape from excitation frequency in idle and common operating speed.So that resonance was avoided and NVH performance was improved.Validity of structure amelioration was validated by experimentation.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Excavator, Noise, vibration, and harshness, Natural frequency, Modal analysis, Vibration, Engineering, Modal, Automotive engineering