Lateral motion of the endless flat belt in a two-pulley belt system

Han, Fenglin; He, Ruibo; Yan, Hongzhi; Xiong, Feng

doi:10.1177/1687814017695955

Cited by 5 publications

(6 citation statements)

References 20 publications

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“…He also showed that the skew ratio varied with the belt width. Fenglin et al proposed a simulation method that could forecast the transient and steady lateral motion of a belt using the solver dde23 in MATLAB, and the simulation results agreed well with the experimental ones (Fenglin et al, 2017). Furthermore, they proposed a closed-form expression for the lateral velocity of the belt and showed that the velocity increased with an increase in the tilt angle, belt speed, and tension, and decreased with an increase in the radius of the pulley.…”

Section: Introductionmentioning

confidence: 86%

Lateral motion of slender endless flat belt in two-roller belt system with in-plane misalignment

YOSHIDA,

KAWAMATA,

NAKAMICHI

2024

JAMDSM

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This study aims to clarify the relationship between the lateral motion of a slender endless flat belt and the parameters of a two-roller belt system, such as misalignment angle, distance between rollers, and roller diameter. A calculation method to predict the lateral motion the aforementioned configuration with in-plane misalignment was proposed based on the results of our previous study on an open-end belt system, which revealed that the lateral belt motion was determined by the relative displacement of the belt between the upstream and downstream rollers in the axial direction of the roller. An experimental setup was employed to investigate the lateral motion of such a system with in-plane misalignment and verify the validity of the method. The results based on the proposed method agreed well with the experimental results of the lateral belt motion. Furthermore, a formulation that could predict the change in the lateral belt motion, referred to as the tracking ratio or skew rate, of the slender endless flat belt in a two-roller belt system with in-plane misalignment based on the calculation method of the lateral belt motion was proposed. The computed tracking ratio based on this formulation agreed well with the experimental results. Our results demonstrated that the tracking ratio was influenced by the misalignment angle, distance between the rollers, and roller diameter.

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Section: Introductionmentioning

confidence: 86%

Lateral motion of slender endless flat belt in two-roller belt system with in-plane misalignment

YOSHIDA,

KAWAMATA,

NAKAMICHI

2024

JAMDSM

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“…The tensioner consists of a base (1), a torsional spring (2), a tensioner arm (3), and a friction disk (6), and so on. The description for each component and the mechanical fit among components of tensioner are shown in Tables 1 and 2. As shown in Figure 1(b), owing to the rotation of tensioner arm (3), a counter torque is generated by the torsional spring (2). Two types of friction torques are generated: the friction torque (M f1 ) between the top surface of bushing (4) and friction disk (6), and the friction torque (M f2 ) between the cylindrical contact surfaces of the bushing (4) and the pivot shaft (5).…”

Section: Structure Of Tensioner and Friction Torquesmentioning

confidence: 99%

“…As shown in Figure 1(b), owing to the rotation of tensioner arm (3), a counter torque is generated by the torsional spring (2). Two types of friction torques are generated: the friction torque (M f1 ) between the top surface of bushing (4) and friction disk (6), and the friction torque (M f2 ) between the cylindrical contact surfaces of the bushing (4) and the pivot shaft (5).…”

Section: Structure Of Tensioner and Friction Torquesmentioning

confidence: 99%

“…The test rig for measuring the working torque of tensioner is shown in Figure 8. The tensioner pulley (3) is mounted inside a hook (2), and the hook (2) is connected to an actuator (1). The base of tensioner ( 3) is installed in a connecting support (4) which is fixed to the fixed jaw (5).…”

Section: Experiments and Model Validation For Vibration Responses Of Tensionermentioning

confidence: 99%

“…The tensioner is an important component of TBDS for maintaining belt tension constantly, avoiding the jumping in meshed belt teeth and improving the belt service life by reducing vibration. [1][2][3][4] Generally, a typical tensioner is mainly composed of a torsional spring, friction elements, and an eccentric tensioner arm. 5 The spring functions as an energy storage element for tensioning the belt, and the damping element is used for reducing and absorbing the vibration of the belt.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Methods for estimating hysteretic behavior and vibration responses of a timing belt tensioner

Long

Yin

Zhao

et al. 2019

Advances in Mechanical Engineering

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An automatic tensioner that consists of a torsional spring and friction damping elements is widely used in belt drive system. The relation of the applied torque versus the imposed angle of tensioner during loading and unloading processes is described as a hysteretic loop. An analytical model is established for estimating the hysteretic behavior of a tensioner, and measurements for hysteretic loop in quasi-static and dynamic excitation are carried out to validate the analytical model. Taking one engine timing belt drive system as a studying example, the method and the procedure for estimating vibration responses of the nonlinear tensioner are given. An iterative algorithm for predicting the accurate equivalent viscous damping of tensioner is carried out in analyzing a belt drive system. The vibration responses of tensioner are validated by the measurement of timing belt drive system. The developed method presented in this article is useful for predicting the hysteretic behavior of tensioner, vibration responses, and the parameters optimization of a belt drive system.

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Lateral motion of a flat belt in an open-end belt system with in-plane misalignment

YOSHIDA,

TAKEDA

2023

JAMDSM

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Belt systems with flat belts and rollers have been widely used in power transmission and article transport mechanisms. In belt systems, the relative tilt of adjacent rollers, called misalignment, causes the flat belt to move in the width direction (lateral belt motion, also referred to as tracking). However, the mechanism of the lateral belt motion has not been precisely clarified. Understanding the mechanism of the lateral belt motion not only helps achieve the stable operation of the belt system but also is useful for web transportation, such as films and thin sheets. The lateral belt motion in the open-end belt system with in-plane misalignment was investigated using an experimental setup. The experiment shows that, in the open-end belt system, the lateral belt motion stays in equilibrium where the stream of the belt becomes perpendicular to the axis of the downstream roller. We, herein, proposed a formulation that predicts a lateral belt motion in the belt system using a relative displacement of the belt between rollers, distance between adjacent rollers and parameters of the crown roller. We observed that, in an open-end belt system, the lateral belt motion is influenced by the relative displacement of the belt between the rollers rather than the misalignment angle between rollers.

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Lateral motion of the endless flat belt in a two-pulley belt system

Cited by 5 publications

References 20 publications

Lateral motion of slender endless flat belt in two-roller belt system with in-plane misalignment

Lateral motion of slender endless flat belt in two-roller belt system with in-plane misalignment

Methods for estimating hysteretic behavior and vibration responses of a timing belt tensioner

Lateral motion of a flat belt in an open-end belt system with in-plane misalignment

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