Strength Analysis of Eight-Wheel Bogie of Bucket Wheel Excavator

Vulović, Snežana; Živković, Miroslav; Pavlović, Ana; Vujanac, Rodoljub; Topalović, Marko

doi:10.3390/met13030466

Cited by 5 publications

(6 citation statements)

References 17 publications

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“…Stress analysis revealed that the maximum stress acting on the ring gear and drive shaft was 204.2 MPa. This can confirm reliability by ensuring that it does not break under extreme conditions that will be used in producing the electric wheelchair drive unit [20,21]. The maximum strain appears at the end of the shaft connected through the pulley and key, with a value of 0.064453 mm, which is very small, allowing cross-verification of safety [22].…”

Section: Gear Stress Analysismentioning

confidence: 87%

Design of Wheelchair Drive Unit Capable of Driving on Roads and Obstacles with Shape Conversion

Jeong,

Kwon,

Youm

et al. 2024

Applied Sciences

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Wheelchairs are widely used globally and are essential for providing autonomy and mobility to elderly and disabled people who have movement restrictions. Manual wheelchairs require operation through turning the wheels or pushing the wheelchair directly, thus posing mobility limitations for the user and caregiver. In contrast, electric wheelchairs, when used by the user, allow for improved flexibility by operating the wheelchair through a single control mechanism. However, the use of electric wheelchairs poses challenges in accessing areas with stairs and curbs, limiting the range of activity and thereby diminishing the quality of life for users and those reliant on electric wheelchairs. The electric wheelchair developed in this research incorporates a single motor for lightweight design. It uses a wheel travel variation actuator, eliminating the need for synchronization and allowing for low-power operation. This design reduces power loss from the caterpillar’s idling during wheel movement and includes the implementation of a pulley system. The optimal pulley belt length was calculated, and a deceleration device was installed inside the caterpillar, enabling a design that is compact, lightweight, and capable of high deceleration. On paved roads and flat terrain, the electric wheelchair is designed for high-speed travel using two pairs of front omni wheels and drive wheels. For terrains with stairs, speed bumps, unpaved roads, and unavoidable obstacles, the wheelchair is powered by caterpillars. The electric wheelchair developed through the research presented in this paper has verified the reliability of its transmission system through gear stress and deformation analysis. Additionally, an electric wheelchair based on the proposed concept was constructed to validate the drivability, safety, operability, and convenience of its driving unit. Furthermore, a user rode the constructed electric wheelchair to confirm that there were no issues with its drivability.

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Section: Gear Stress Analysismentioning

confidence: 87%

Design of Wheelchair Drive Unit Capable of Driving on Roads and Obstacles with Shape Conversion

Jeong,

Kwon,

Youm

et al. 2024

Applied Sciences

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“…The collection includes papers regarding the most multifaced aspects of metals and their alloys as synthesis and treatments [1], experimental characterization [2][3][4], material models [2,5,6], and engineering applications [7,8], providing a clear cross-section of the wide variety of topics and research arguments under investigation in the scientific community now.…”

Section: Contributionsmentioning

confidence: 99%

“…The [8] discusses the crawler travel gear, a heavy vehicle propulsion system commonly used in tanks, excavators, and off-road vehicles. Crawler travel gears offer advantages in distributing vehicle weight over soft terrain, but they can also damage paved roads and have complex designs.…”

Section: Contributionsmentioning

confidence: 99%

High-Performance Applications of Metals and Alloys: Material Properties, Behaviour Modeling, Optimal Design and Advanced Processes

Fragassa,

Lesiuk,

Epp

2023

Metals

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“…At present, the welding of magnesium alloy is mainly used in engineering fields such as aviation, aerospace, transportation, chemical engineering, and rockets [2]. Therefore, the reliable connection between magnesium and galvanized steel has great potential for manufacturing lightweight structural components, and can also expand the application of magnesium alloys in various fields [3,4]. However, the welding performance of magnesium alloys is relatively insufficient.…”

Section: Introductionmentioning

confidence: 99%

Application of ultrasonic vibration in magnesium alloy lap welding

Tian

2024

J. vibroeng.

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In order to enhance the performance of magnesium alloy and galvanized steel welds, ultrasonic vibration was applied to the laser welding process, and the effect of ultrasonic on mechanical properties was verified through experimental methods. The laser welding system for the lap weld seam was designed, and the ultrasonic vibration module and image detection module were added, which can obtain the influence of ultrasonic vibration on the molten pool area. Under the conditions of ultrasonic vibration power of 1000 W and 0 W, the characteristics of the weld pool area, metallographic structure, tensile strength, fracture morphology, hardness, residual stress, wear resistance, and corrosion resistance of the weld specimen were compared. The image data acquisition structure indicated that ultrasonic vibration can effectively reduce the ineffective area of the molten pool and make the energy in the molten pool more concentrated. Under the influence of ultrasonic vibration, the maximum molten pool area decreased to 5.38 mm2, with a variation range of 3.9 %, and the proportion of pores was greatly reduced. Research found that ultrasonic vibration can significantly improve the microstructure characteristics of the fusion welding zone, with an average grain size reduced to 23 μm. The reduction of grain size and refinement of microstructure were beneficial to the improvement of mechanical properties of magnesium alloy joints, with a yield strength increase of 6.5 %. Ultrasonic vibration had little effect on the hardness of the heat affected zone, it can increase the average hardness of the weld zone by more than 5 % and reduce the maximum residual stress by more than 50 %. Under different pressure and friction speed conditions, the maximum wear amount can be reduced by more than 25 %. At the same time, the resistance to oxidation corrosion and electrochemical corrosion also can be improved to a certain extent.

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Strength Analysis of Eight-Wheel Bogie of Bucket Wheel Excavator

Cited by 5 publications

References 17 publications

Design of Wheelchair Drive Unit Capable of Driving on Roads and Obstacles with Shape Conversion

Design of Wheelchair Drive Unit Capable of Driving on Roads and Obstacles with Shape Conversion

High-Performance Applications of Metals and Alloys: Material Properties, Behaviour Modeling, Optimal Design and Advanced Processes

Application of ultrasonic vibration in magnesium alloy lap welding

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