Mechanism Design and Experimental Verification of Novel Automatic Balance Equipment for a Rope-Type Elevator

Qin, Zhen; Wu, Yu-Ting; Cong, Jianchen; Lyu, Sung-Ki

doi:10.3390/machines10121180

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…Varying the inner diameter of O-ring grooves. Precision machining technology has developed rapidly in recent years and now the precision of machining can be accurately controlled within the error range of only 0.1~1.0μm [28][29][30][31]. This research has attempted to explore the friction behavior between the sealing ring and the cylinder through precision machining technology.…”

Section: Plos Onementioning

confidence: 99%

Empirical research on the friction behavior of O-rings in hydraulic cylinders

Qin

et al. 2023

PLoS ONE

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Mechanical products are becoming more diversified with the continuous development of precision processing and materials technologies. The friction force generated by the O-ring seal in a hydraulic cylinder was once considered redundant. However, its utilization has recently been proposed. The hardness of the O-ring and the inner diameter of its groove directly affect the normal pressure between the O-ring and the inner wall of the cylinder, thereby affecting the friction behavior. In order to explore this friction behavior, a strain-based friction force measurement system is developed in this study, and the steady-state and dynamic friction values under different working conditions are studied and discussed in depth. This research on the friction behavior in the cylinder provides a theoretical basis for more convenient design and utilization of the friction force generated between the O-ring and the inner wall of the cylinder.

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Section: Plos Onementioning

confidence: 99%

Empirical research on the friction behavior of O-rings in hydraulic cylinders

Qin

et al. 2023

PLoS ONE

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“…To balance the different tensions and the axial deformation of each cable, automatic balance equipment for cable-type elevators was proposed. (25) The results of using the Simscape numerical methodology showed that the imbalance rate of the system could be effectively limited to a low level.…”

Section: Introductionmentioning

confidence: 99%

Detection of Elevator Cable Slippage Using Streaming Image Process Algorithm

Lin,

Peng

2024

Sensors and Materials

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Elevators are the most common transportation tool in modern buildings. To satisfy the safety requirement, it is mandatory to carry out regular maintenance in a certain period of time. Among maintenance items, the determination of the traction compartment cable slippage status is one of the greatest challenges in the elevator industry, but a simple and effective method is still lacking. Currently, in a real situation, the inspection accuracy relies considerably on suitable personnel experiences, and the inspection process is also time-consuming. Accordingly, we aim to develop an automatic streaming image process model for the detection of the elevator cable slipping distance. First, the geometric shape of an ellipse is established from a captured circle image. Second, the ellipse is averaged and segmented into 360° with a predefined label as a reference point. Third, the circumference formula is applied to the calculation of the cable slipping distance. Finally, the outcome of the arithmetic operation is sent to the cloud database through a graphical user interface (GUI) on the web for monitoring purposes. The experimental results reveal that the standard deviation is as small as 1.153 mm, and the measurement uncertainty is only 0.258 mm, demonstrating high accuracy, rapidity, and robustness.

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