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DOI: 10.1016/J.MEASUREMENT.2021.109179 Corpus ID: 233978647; Analysis of the dynamic forces acting on a vibrating screen and its support structure using a scale model @article{Linhares2021AnalysisOT, title={Analysis of the dynamic forces acting on a vibrating screen and its support structure using a scale model}, author={Thiago Bento Linhares and …
Analyzed vibrating screen's dynamic characteristics of determinate structure and statically indeterminate structure, calculate natural frequency, natural vibration mode and dynamic response based ...
When the vibrating screen structure generates fatigue crack, its stiffness, frequency and mode . ... Selects the 27 m 2 large linear vibrating screen as the research object, ...
This paper presents a novel model for calculating the dynamic stress of a beam structure in a vibrating screen. The proposed model employs a dynamic screen box model as a foundation and utilizes the flow method to establish the mass of the screening materials within the screen box. By considering the motion characteristics of beam structures, the dynamic model …
problems, the vibrating screen structure has been improved, and the rationality of structural improvement has been proved by comparative analysis. The research in this paper can …
With the demand for large-scale screening in coal preparation, the width of screen surface may increase up to 5 ms, which results in extremely complex dynamic characteristics of the screen structure. Generally, a vibrating screen may bear the coupled load consisting of intense excitation load initiated by the exciter, the inertial load of the ...
In this paper, coal screening in vibrating screen was carried out with the size ranges of −6 mm + 4 mm, −4 mm + 2 mm, and −2 mm + 0.5 mm. The vibrating screen was newly designed with ...
In order to solve the problem of fatigue fracture of the beam of the large-scale vibrating screen, the 3.6x7.3 m banana vibrating screen was taken as the research object, and the joint surface ...
Simulation of simplified the part structures of vibration screen by ANSYS software, and then establishes the finite element model of the linear vibration screen. Modal analysis and harmonic analysis of finite element model, and then according to the analysis results corresponding local structural modifications and adjust the center of mass of the modified …
Unlike the traditional vibrating screens, the VFFS is a two-body vibration system, including two vibrating bodies, comprising the main screen frame and a floating screen frame. In this paper, a single-deck type of 0827 VFFS excited by an exciter was designed and produced, and a five-degree-of-freedom translational and rotational dynamic model ...
The vibrating screen with statically indeterminate mesh beam structure (VSSIMBS) is a novel type of large vibrating screen, which is widely used in coal preparation plants due to its high strength ...
The simplest Vibrating Screen Working Principle can be explained using the single deck screen and put it onto an inclined frame. The frame is mounted on springs. The vibration is generated from an unbalanced flywheel. ... The vibration will crystallize the molecular structure of the metal causing what is known as METAL FATIGUE to develop. The ...
The designed equipment presented in this work is a vibrating dewatering screen, model PVD 1206 1 A (Fig. 1), with a nominal length of 1200 mm and nominal width of 600 …
The screen body is a composite structure composed of two side panels, an excitation beam, several bearing beams and stiffeners and so forth. The screening process is …
Analysing the forces transmitted from the vibrating screen to its structure, the analytical and experimental values were quite different, mainly at higher frequencies. Introduction. It is known that vibrating screens can be considered the main equipment in mining. Among the large machines, it can be said that vibrating screens are the most ...
Aiming at the design defects of the existing structure of the linear vibrating screen, the finite element analysis model of the linear vibrating screen was established by Abaqus finite element ...
Flip-flow screens are increasingly used in the processing of fine wet coal. In this work, the vibration characteristics of an industrial-scale flip-flow screen with crank-link structure (FFSCLS) were investigated theoretically and experimentally. An improved kinematic model of FFSCLS was proposed and experiments are carried out to verify the reasonability. The effects …
In order to obtain more reliable and believable research results, model of a traditional vibrating screen (TVS) with the same mass was also established for comparisons with VSDSIMBS.
Based on the basic theory research and semi-industrial test optimization, the technological achievements were applied to design the industrial vibrating screen. And the different specifications of industrial VEVSs were developed by Anshan Heavy Duty Mining Machinery Engineering Technology Research Center, as shown in Table 4 .
Dynamic models of vibrating screens can simulate motion of the vibrating screen structure and show good agreement with experimental measurements [27] and finite element method (FEM) results [22]. ...
The vibrating screen with hyperstatic net-beam structure was taken as research object and the original basic structure of side plate is shown as Fig 7. ... Su et al. proposed an improved scheme of ...
The research in this paper can provide a theoretical basis for the optimal design of vibrating screen structure and improve the reliability of design. References 1. Huo PF. Fatigue life analysis of linear vibrating screen. Taiyuan: Taiyuan University of Technology; 2010. p. 1. 2. Wen BC, Liu SY.
The dynamic response of the vibrating screen has a great impact on the screening efficiency and fatigue life of the structures. For the conventional dynamic design, the consideration of the ...
To bridge this research gap, the loaded dynamic model of a FFVS is established in this paper. First, dynamic tests are performed to investigate the equivalent stiffness and the equivalent damping of the force along the screen surface which is induced by the processed materials. ... Unlike the structure of conventional vibrating screens, a FFVS ...
A vibrating flip-flow screen (VFFS) is a two-body vibration system with a high-vibrating-strength screen surface developed based on a circular vibrating screen (CVS), which offers significant ...
As a traditional reciprocating vibrating screen, linear vibrating screen has always been the focus of research because of its simple and reliable structure and strong practicability. The linear vibrating screen is mainly composed of screen box, excitation device, gearing, vibration damping device and support components, etc.
The screen body is a composite structure composed of two side panels, an excitation beam, several bearing beams and stiffeners and so forth. The screening process is illustrated in Fig. 2(b). ... Research method. ... Flip-flow vibrating screens (FFVSs) are the critical screening equipment for classifying and dewatering wet materials in mining ...
The vibrating screen has absolute advantages in the sorting equipment due to its simple structure, reliable operation and large processing capacity.
A flip-flow screen with crankshaft-link structure (FFSCLS) proposed by Li has excellent performance for moist coal screening. 17 Improvement for design of beam structures in large vibrating screen considering bending and random vibration is studied by Peng and Liu, 18 which aims to conduct a systematic mechanics analysis of the beam structures ...
The considered vibrating screen is investigated on the 6-DOF (degree-of-freedom) dynamical model to reflect all linear and rotational components of spatial motion. Besides the main periodic motion ...
