Modeling and dynamic analysis of the non-circular gear system of a bucket wheel stacker/reclaimer

Yuan, Yongliang; Song, Xuguan; Sun, Wei; Wang, Xiaobang

doi:10.1063/1.5040124

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…However, the methodology used by this author is complex, not universally applicable, and therefore not suitable for engineering purposes. The topic of designing planetary mechanisms with non-circular gears was touched upon in publications [2,3,4,5,6,7,8]. Our articles [9,10,11], which consistently improve the design methodology, are devoted to the development of an engineering method of profiling the PRHM segments.…”

Section: Introductionmentioning

confidence: 99%

Geometric calculation of non-circular gear segments of the planetary mechanism in rotary hydraulic machines

Volkov,

Fadyushin,

Vedernikov

2023

E3S Web of Conf.

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The article discusses the improvement of the methods of geometric design of positive-displacement hydraulic machines with floating satellites. At the first stage, based on standard methods, an “average” round-link planetary mechanism, having the number of teeth as in the designed hydraulic machine, is calculated. At the second stage, the same-type cyclic functions characterizing the paths of the center of the satellite in the coordinates associated with each of the central gearwheels are specified. At the third stage, the coordinate arrays of the satellite in a variety of its positions are calculated. The angular position of the satellite relative to one of the profiled gearwheels (for example, the sun gearwheel) provides equidistance of the centroid of this gearwheel to the path of the center of the satellite. The angular position of the satellite relative to the other profiled wheel is determined by its running around the first wheel. At the final stage of the design, the satellite is constructed in a variety of positions, and the profile of the corresponding non-circular gear rim is obtained as an envelope of the family of satellite curves-profiles.

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Section: Introductionmentioning

confidence: 99%

Geometric calculation of non-circular gear segments of the planetary mechanism in rotary hydraulic machines

Volkov,

Fadyushin,

Vedernikov

2023

E3S Web of Conf.

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show abstract

“…e noncircular gear mechanism has a compact structure and high transmission torque and is widely used in various machines, such as seedling pick-up mechanism for vegetable [1], transplanting mechanism for rice [2], gravity equilibrator [3], bucket wheel stacker [4], and differential velocity vane pump [5]. e noncircular gear hydraulic motor with the noncircular gear mechanism as the core component has a small size, high torque, and smooth transmission and can use a nonflammable emulsion as the working medium, which can improve the safety factor when used in a high gas environment such as a mine and therefore has good application prospects.…”

Section: Introductionmentioning

confidence: 99%

Design of a Noncircular Planetary Gear Mechanism for Hydraulic Motor

Liu

Gong

et al. 2021

Mathematical Problems in Engineering

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Given the design difficulty and poor accuracy of tooth profile of noncircular gear used in noncircular gear hydraulic motor, it is proposed to reduce the design difficulty and improve the design accuracy by using arc-shaped pitch curve instead of noncircular pitch curve with continuously varying curvature. Based on the geometric relationship and transmission relationship of the noncircular planetary gear mechanism, a nonlinear programming model is constructed for the circular arc-shaped pitch curve. By solving the nonlinear programming model, a noncircular planetary gear mechanism with a modulus of m = 1.5 is designed. The noncircular gear mechanism with the arc-shaped pitch curve was machined and installed in a hydraulic motor, and an efficiency comparison experiment was conducted with a high-order elliptical noncircular gear mechanism with a continuously varying curvature. The experiment shows that the efficiency of the two noncircular gear mechanisms is basically the same, and the best speed range is 100–400 rpm. The noncircular planetary gear mechanism with an arc-shaped pitch curve designed in this paper has reasonable structure, correct transmission relationship, and simple design method, which shows that the design method proposed in this paper has a good engineering application value.

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“…Non-circular gears have been investigated by many researchers, studies of which included determination of the transmission ratio based on the required kinematic properties (Zheng et al, 2016;Lin et al, 2019), optimization of dynamic performance of non-circular gear pair (Yuan et al, 2018), design of tooth profile with better strength properties (Danieli and Mundo, 2005), computer aided design, and the processing method of non-circular gear. Furthermore, a variable-ratio Line Gear was proposed by Chen et al (2016), and then an incomplete Line Gear was proposed to lower the sliding rate , but its complex structure could limit the application.…”

Section: Introductionmentioning

confidence: 99%

A miniature non-circular line gear with pure-rolling contact

Xiao

Chen

Xie

et al. 2021

JAMDSM

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The design of pure-rolling gear has always been a subject of intense research, because in some working conditions, such as dry friction, pure-rolling gear has higher transmission efficiency and less possibility of transmission failure. Non-circular gears have played an important role in mechanical devices and robots. To date, there is no effective method to design a pure-rolling non-circular gear with relatively small number of teeth. Based on the space curve meshing theory, a pure-rolling non-circular Line Gear (PNLG) mechanism was presented in this paper. Firstly, the fundamental design method of the PNLG was proposed, which included the derivation of the contact curves, the obtainment of the teeth number and the solution of the rotating angle function. And, the rotating angle function was selected as a segmental quartic curve to ensure the dynamic stability in the meshing process. Afterwards, a pair of PNLG was designed for finite element analysis (FEA) and kinematics experiment. Finally, prototypes of PNLG pair were manufactured by using of 3D printing, and transmission ratios were measured on the test rig. The simulation results and experimental results indicate that the devised PNLG is feasible, that is, the PNLG can smoothly output the preset rotating angle and angular velocity. The designed PNLG mechanism might be used in some special cases, such as the occasion without lubrication and miniature devices.

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Modeling and dynamic analysis of the non-circular gear system of a bucket wheel stacker/reclaimer

Cited by 9 publications

References 21 publications

Geometric calculation of non-circular gear segments of the planetary mechanism in rotary hydraulic machines

Geometric calculation of non-circular gear segments of the planetary mechanism in rotary hydraulic machines

Design of a Noncircular Planetary Gear Mechanism for Hydraulic Motor

A miniature non-circular line gear with pure-rolling contact

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