Transmission characteristics and phase number optimization on the transmission mechanism of rod gear pulse continuously variable transmission

Chen, Suifan; Zhang, Dong

doi:10.1177/1687814017751966

Cited by 3 publications

(2 citation statements)

References 5 publications

(5 reference statements)

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“…Structural scheme of the variator with lever mechanisms (1) crank, (2) rod, (3) slider, (4) driven crank, (5) variator, (6) auxiliary crank, (7) auxiliary rod, (8) auxiliary slider…”

Section: Figurementioning

confidence: 99%

Kinematic and Dynamic investigations of the variator with lever mechanisms

Abdiraimov

2022

Preprint

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The article discusses the spatial lever mechanisms attached to the speed variator. The device of the mechanism is described that has the ability to change the transmission ratio in a wide range by converting rotary motion into translational motion and having the ability of reversibility. A kinematic investigation of mechanisms was carried out, where the tasks of direct and inverse kinematics were solved and the uniformity of the output shaft rotation has been proved, as well as the main kinematic characteristics of the links were determined. In the dynamic investigation of mechanisms was used the kinetostatic analysis, where the reactions in kinematic pairs and the ratio of the input and output moments on the mechanism depending on the transmission ratio were determined. Numerical analysis has confirmed the validity and correctness of the theoretical results.

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“…Structural scheme of the variator with lever mechanisms (1) crank, (2) rod, (3) slider, (4) driven crank, (5) variator, (6) auxiliary crank, (7) auxiliary rod, (8) auxiliary slider…”

Section: Figurementioning

confidence: 99%

Kinematic and Dynamic investigations of the variator with lever mechanisms

Abdiraimov

2022

Preprint

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“…They can be applied to vehicle and wind turbine, and the simulation and experimental analysis were carried out. Chen et al [21] proposed a new rod gear pulse CVT and analyzed its transmission characteristics and phase number optimization. Compared with the other traditional CVT, it has a wider variable range of transmission ratio and smaller pulsation rate while reducing volume.…”

Section: Introductionmentioning

confidence: 99%

Pattern Classification and Gear Design of Spatial Noncircular Gear Continuously Variable Transmission

Yang

Lin

Xu³

2022

Applied Sciences

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Noncircular gear and curve face gear are collectively referred to as spatial noncircular gear. Combined with the transmission characteristics of spatial noncircular gear, a new classification design method of spatial noncircular gear continuously variable transmission (CVT) pattern was proposed, including two categories named addition type and multiplication type, with a total of five subcategories. Through the combination of the transmission ratio changing mechanism and transmission selection mechanism, it can realize the CVT. The overall transmission ratio depends on the phase angle between the spatial noncircular gear pairs and is independent of the input rotation angle. Firstly, the CVT principle and transmission ratio characteristics of each pattern were analyzed. Then the tooth profile classification design of spatial noncircular gear was carried out, and the general parametric design equations of the tooth surface with different tooth profiles were obtained. Finally, through simulation, the overall transmission ratio of each pattern was compared between theory and simulation, which verified the correctness of the CVT classification design method. The advantages and disadvantages of the two categories were analyzed. Moreover, through the transmission experiments of curve face gear pairs with different tooth profiles, the transmission ratios were compared between theory and experiment. Considering the influencing factors such as machining error, assembly error and measurement error, the experimental error is within a reasonable error range, which verified the correctness of the tooth profile classification design method. This study provides a new idea for the further research and application of spatial noncircular gear CVT.

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Analytical Evaluation of the Velocity Fluctuation of Pulse Continuously Variable Transmissions

Sharkov

Kalinin

2022

PoHEI.MB

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Pulse continuously variable transmissions allow to change gradually the speed and power characteristics of machine drives in motion and under load. When operating such transmissions, the transforming mechanism has the most complex kinematics. It transforms the rotational motion of the input link into the vibrational motion of intermediate links with different amplitudes and frequencies. The article considers the problem of analytical research of the kinematics of the transforming mechanism of a pulsed continuously variable transmission with six free-running mechanisms. To solve the problem, a calculation scheme is proposed and mathematical expressions are obtained for describing the relationship between the geometric parameters of the transforming mechanism and the speeds of the points of its links. The kinematic analysis was performed for the most compact design - a transforming mechanism based on a four-link lever. Graphs characterizing the change in the angular velocity of the output link during the forward and reverse motion of the rocker arm are given. The values of the coefficient of velocity fluctuation are found. It is shown that it is preferable to transfer the rotational motion by free-running mechanisms in the forward stroke.

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Transmission characteristics and phase number optimization on the transmission mechanism of rod gear pulse continuously variable transmission

Cited by 3 publications

References 5 publications

Kinematic and Dynamic investigations of the variator with lever mechanisms

Kinematic and Dynamic investigations of the variator with lever mechanisms

Pattern Classification and Gear Design of Spatial Noncircular Gear Continuously Variable Transmission

Analytical Evaluation of the Velocity Fluctuation of Pulse Continuously Variable Transmissions

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