Study on dynamic characteristics of leaf spring system in vibration screen

Abstract

By studying dynamic characteristics of the leaf spring system, a new elastic component is designed to reduce the working load and to a certain extent to ensure the linearity as well as increase the amplitude in the vertical and horizontal directions in vibration screen. The modal parameters, amplitudes, and amplification factors of the leaf spring system are studied by simulation and experiment. The modal results show that the leaf spring system vibrates in horizontal and vertical directions in first and second mode shapes, respectively. It is conducive to loosening and moving the particles on the vibration screen. In addition, it is found that the maximum amplitude and amplification factor in the horizontal direction appear at 300 r/min (5 Hz) while those in the vertical direction appear at 480 r/min (8 Hz), which are higher than those in the disc spring system. Moreover, the amplitude of the leaf spring system increases proportionally with the increase of exciting force while the amplification factors are basically the same under different exciting forces, indicating the good linearity of the leaf spring system. Furthermore, the minimum exciting force occurs in the leaf spring system under the same amplitude by comparing the exciting force among different elastic components. The above works can provide guidance for the industrial production in vibration screen.

Radyal Tabanlı Yapay Sinir Ağları Kullanılarak Yaprak Yay Sistemi Titreşim Karakteristiğinin Modellenmesi

“…Dinamik analize yönelik bir başka çalışmada ise beklenen çalışma ömründen çok daha erken deforme olan bir yaprak yay sistemi üzerinde ayrıntılı yüzey analizleri ve mekanik testler gerçekleştirilmiştir [8]. Malzeme özelliklerini temel alan çalışmalar incelendiğinde ise; Zhou ve ark., 2021 tarafından yapılan çalışmada yaprak yay sistemlerinde çalışma yükünü azaltmak, doğrusallığı sağlamak ve genlik değişimlerini düzenlemek için yeni bir elastik bileşen tasarlanmıştır [9]. Öztoprak ve arkadaşları tarafından malzeme etkisinin analiz edildiği bir diğer çalışmada, tek yapraklı metal yaprak yay yapılarının yerine kompozit esaslı tek yapraklı yay sistemi tasarlanmış ve prototip üretimi gerçekleştirilmiştir [10].…”

Study on the dynamics characteristics and screening performance of the disc spring vibration screen

“…This type of elastic elements has low stiffness, which makes the overall stiffness of the elliptical vibration screen low. 9 The natural frequency of the traditional elliptical vibration screen in the vibration direction is far lower than working frequency, which leads to a large exciting force to achieve the required amplitude. However, with the development of large-scale and high-speed vibrating screen, exciting force of vibrating screen is increasing to satisfy the required amplitude.…”

Analysis of the Vibration Characteristics of a Leaf Spring System Using Artificial Neural Networks

“…In [2], the authors have realized detailed surface analyses and mechanical tests over a leaf spring system that deformed much earlier than its expected service life. In their work [3], Zhou et al, have designed a new elastic component in order to reduce the working load, ensure the linearity, and regulate the amplitude variations in leaf spring systems. A composite leaf spring system improved by utilizing polymers reinforced with glass fiber has been proposed in [4], and also detailed ANSYS analyses have been realized under the modeling constraints of strains, stresses, and deflection.…”