Lightweight and High‐Strength Design of an Excavator Bucket under Uncertain Loading

Yu, Xiujuan; Pang, Xiaoping; Zou, Zhihong; Guo, Zhang; Hu, Yi; Dong, Jingjun; Song, Houli

doi:10.1155/2019/3190819

Cited by 15 publications

(9 citation statements)

References 18 publications

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“…In [16], the methodology for creating a light and highstrength design of an excavator bucket under indefinite load is presented, obtained by Monte Carlo modeling based on the existing model of soil interaction with the bucket. Modeling of the excavator bucket using the ANSYS program allowed determining the directions of diminishing the maximum stress according to Mises and reducing the weight of the bucket.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining efficient operating modes and sizes of blades for multi-scraper trench excavators

Kravets

Suponyev

Goponov

et al. 2020

EEJET

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The presented results of scientific research are aimed at increasing the efficiency of trenching for laying the utility lines using new less energy-consuming technologies of excavating the soil with the working equipment of multi-scraper excavators. The proposed method of determining the efficient operating modes for excavators when digging a trench is based on the idea of cutting the soil with the blades at a critical depth level, which guarantees consumption of minimum specific energy and maximum efficiency of the machine. This becomes possible if the operation of such blades is provided with the absolute values and the ratio of the speeds of cutting and submitting the working body into the face. To determine the efficient modes of multi-scraper excavators and the size of their edge side blades, the conditions of their effective unloading were identified and the patterns of changing the soil movement over the surface of unloading scrapers depending on the time of unloading were determined. For the same purpose, the dependences of the blocked cutting speed on the trench width were determined and the technical performance of the excavator was specified on the basis of determining the soil bearing capacity for one group of blades. It is found that the time of unloading the soil from the scrapers very slightly depends on their angular velocity within its change in the unloading zone. On this basis, the maximum angular speed of the scrapers is determined. The identified indicators are related to the width of the edge side blades performing asymmetric locked cutting, whose dimensions were determined by calculations. The obtained efficient operating modes of scraper trench excavators and the size of their edge side blades allow developing practical recommendations for improving the working equipment of excavators of this type

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining efficient operating modes and sizes of blades for multi-scraper trench excavators

Kravets

Suponyev

Goponov

et al. 2020

EEJET

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“…Yao et al [16], by modifying angular parameters, reached 36.4% von Mises stress reduction. Yu et al [35] achieved 31.89% von Mises stress reduction by reducing the weight of the structure. As is shown in Figure 18, the object was more relaxed regarding the distribution of tensions.…”

Section: Design Optimisationmentioning

confidence: 99%

Parameterisation and Optimisation of a Hand-Rake Sweeper: Application in Olive Picking

et al. 2020

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Olive picking is one of the most common social agricultural activities in many regions of Andalusia where the predominant crop is the traditional olive grove. The machinery used includes shakers, blowers and essential, low-cost hand-rake sweepers. The latter are generally used by the women of the squads to sweep the olives that fall from the trees. This article is focused on the design and optimisation of a hand-rake sweeper, in terms of durability and cost, for the picking of olives and other fruits, such as almonds, which are currently the main alternative to nonperennial crops in Andalusia. A parametric design of a hand-rake sweeper was created for this application using the design software CATIA, and its most vulnerable points were analysed in terms of effectiveness with varying design parameters, conducting usage simulations with ANSYS for a light material such as polypropylene. The maximum von Mises stress of the whole structure was 155.81 MPa. Using ANSYS, the dimension parameters of the hand-rake sweeper structure were optimised. The modified design was analysed again, showing a reduction of maximum tensions of 10.06%, as well as a decrease in its maximum elongations (0.0181 mm).

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“…Yao et al [12], by modifying angular parameters, reached 36.4% von Mises stress reduction. Yu et al [23] achieved 31.89% von Mises stress reduction by reducing the weight of the structure. As is shown in Figure 18, the object was more relaxed regarding the distribution of tensions.…”

Section: Design Optimisationmentioning

confidence: 99%

“…On the other hand, there are other light weight tools, such as rods and hand-rake sweepers, which are used by part of the squad [3]. The latter are normally used by women to pile the olives that fall from the trees and facilitate their collection, preventing them from getting covered in dirt, which does not occur when carrying out this task using blowers [23].…”

Section: Introductionmentioning

confidence: 99%

Parameterisation and Optimisation of a Hand-Rake Sweeper: Application in Olive Picking

Fernández¹,

Carranza-Cañadas²,

García-Salcedo³

et al. 2020

Preprint

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Olive picking is one of the most common social agricultural activities in many regions of Andalusia where the predominant crop is the traditional olive grove. The machinery used includes shakers, blowers and an essential low-cost type: hand-rake sweepers. The latter are generally used by the women of the squads to sweep the olives that fall from the trees. This article is focused on the design and optimisation of a hand-rake sweeper, in terms of durability and cost, for the picking of olives and other fruits, such as almonds, which are currently the main alternative to non-perennial crops in Andalusia. A parametric design of a hand-rake sweeper was created for this application using the design software CATIA, and its most vulnerable points were analysed in terms of effectiveness with varying design parameters, conducting usage simulations with ANSYS for a light material such as polypropylene. The maximum von Mises stress of the whole structure was 155.81 MPa. Using ANSYS, the dimension parameters of the hand-rake sweeper structure were optimised. The modified design was analysed again, showing a reduction of maximum tensions of 10.06%, as well as a decrease in its maximum elongations (0.0181 mm).

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Lightweight and High‐Strength Design of an Excavator Bucket under Uncertain Loading

Cited by 15 publications

References 18 publications

Determining efficient operating modes and sizes of blades for multi-scraper trench excavators

Determining efficient operating modes and sizes of blades for multi-scraper trench excavators

Parameterisation and Optimisation of a Hand-Rake Sweeper: Application in Olive Picking

Parameterisation and Optimisation of a Hand-Rake Sweeper: Application in Olive Picking

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