Stone-clod Separation and Its Application to Potato Cultivation in Hokkaido

Ichiki, Hideyuki; Van, Nang Nguyen; Yoshinaga, Keita

doi:10.1016/s1881-8366(13)80030-4

Cited by 9 publications

(5 citation statements)

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“…Following rice, wheat and corn, potatoes (Solanum tuberosum Linnaeus) are one of the world's main crops in terms of calories, and play a dominant role in the world food production (Ichiki et al 2013). According to the annual report of the Food and Agricultural Organization (FAO), the total potato production in 2016 was 375 million t for the world, and Iran's contribution was about 5.2 million t over 162 thousand ha (FAOSTAT 2016).…”

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confidence: 99%

The physical and mechanical properties of potato (Solanum tuberosum L.) tubers as related to the automatic separation from clods and stones

Abedi¹,

Abdollahpour²,

Bakhtiari³

2019

Res. Agric. Eng.

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In the current research, some of the mechanical and physical properties of two industrial varieties of potato tubers that have a prominent role in the mechanised separation process from clods and stones were investigated. These properties include the physical dimension, mass, volume, sphericity, surface area, density, projected areas and Young’s modulus. In addition, the static coefficient of friction and rolling resistance for tubers on five surface materials were determined. The tuber’s size positively affected the physical and mechanical properties of the tubers. The frictional properties of the tubers were affected by the tuber size, the surface type, and the interaction between them. The results showed that most of the apparent properties for the Sante variety were greater than those of the Marfona variety. The static coefficient of friction for the tubers on a wood surface was the maximum and was the minimum value on a galvanized sheet, but for the tuber’s rolling resistance, the results were inversed. The results proposed that the automatic separation of the potato tubers from the impurities using the properties of the crop is possible.

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confidence: 99%

The physical and mechanical properties of potato (Solanum tuberosum L.) tubers as related to the automatic separation from clods and stones

Abedi¹,

Abdollahpour²,

Bakhtiari³

2019

Res. Agric. Eng.

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“…To perform the calculation you need to specify the values of some parameters included in the expression (9).…”

Section: Fig 1 Equivalent Scheme Of Shock Interaction Of Vibratory mentioning

confidence: 99%

“…Some experimental studies of this process are briefly discussed in monographs [4,5]. In works [6][7][8][9] the general questions of the mechanized harvesting of root crops are covered, the designs of digging working bodies, results of theoretical and experimental researches of processes of digging of root crops are resulted.…”

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confidence: 99%

Analytical investigation in the impact interaction of a vibration digger with the body of the root during its extraction from the soil

Adamchuk¹,

Булгаков²,

Kuvachov³

et al. 2020

Visnyk agrarnoi nauky

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The purpose. To substantiate rational constructive and kinematic parameters of the vibrating digger at its shock interaction with the root of sugar beet under the condition of its undamaging during digging from the soil. Methods. Theoretical research was conducted using the basic principles of higher mathematics and theoretical mechanics, in particular the theory of impact. Numerical calculations and graphical dependencies were obtained using a PC based on the developed and standard programs. Results. The shock interaction of the vibrating digging working body with the body of the sugar beet root at one point (asymmetric impact) is considered. Based on the developed equivalent scheme and application of the general theory of impact, a mathematical model of the impact interaction of the vibrating digger of the beet harvester with the body of the root, which is firmly connected with dry and hard soil, is built. Analytical expressions are obtained to determine the shock impulse, as well as the maximum allowable frequency of oscillations of the working body and reduced to the point of impact of its mass, provided that the root is not damaged. Based on analytical expressions, calculations were performed on a PC and graphical dependencies were created of the maximum allowable oscillation frequency of the vibrating digger and reduced to the point of impact of its mass on the amplitude of oscillations and translational velocity for a wide range of values of these parameters. Conclusions. With the increasing frequency of vibration of the vibrating digger in the range of 7.5 -20.3 Hz and the speed of translational movement in the range of 1.4 -2.2 m/s the value of the reduced to the point of impact of its mass tends to decrease and varies within 1.51 -0.63 kg with an amplitude of oscillations of 0.016 m. The maximum allowable frequency of oscillations of the vibrating digger with increasing amplitude of its oscillations decreases sharply, the same as with the increasing speed of translational motion. Thus, for the consolidated mass of the vibrating digger 1.5 kg and the depth of its motion in the soil 0.10 m with increasing amplitude of oscillations in the range of 0.008 -0.024 m and the speed of translational movement in the range of 1.4 -2.2 m/s the maximum allowable frequency varies between 15.7 -4.0 Hz. For the depth of motion of the vibrating digging working body 0.08 m, it varies in the range of 33.0 -10.0 Hz.

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“…The narrowest link in the mechanized technologies of potato production remains his harvesting (Petrov, 2004). In this regards, theoretical and experimental studies, as well as numerous tests of various types of potato harvesting machines, have established that high-quality cleaning of potato tubers from clod and plant impurities is possible when a significant mass of soil and other components of the pile (remains of tops, roots, strong soil formations, stones and others) is immediately separated from the tubers within the process of dig of the potato or immediately after its lifted so that a large mass of heap do not move along with the tubers inside the machine (Keijbets, 2008;Ichiki et al, 2013;Manetto et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Mathematical model of the movement of a potato body along the surface of a spiral separator

Bulgakov¹,

Pascuzzi²

2021

Acta Hortic.

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The potato is grown in over one hundred countries spread over all latitudes, with the most diverse climatic conditions, from the areas near the Arctic Circle to the southern end of the South American continent. The potato is an irreplaceable component of the food tradition of many countries and is the most cultivated species after cereals (wheat, rice and corn). The authors set up and developed a new clod and rubbish spiral separator for potatoes, which is protected by the patent of Ukraine. The operation modalities of this machine are briefly described in the paper. The aim of this study is the development of a mathematical model concerning the movement of a potato body along the surface the spiral separator. In particular, equations are found for determining the coordinates of the position of a potato tuber on the surface of a spiral separator depending on the parameters of the spiral (spiral line) and the size of the tuber. Furthermore, the velocity of tuber movement in the stream formed by the surfaces of two neighboring spirals in the direction of the horizontal, vertical and longitudinal axis are determined. The results of this study will be used in the future to analytically considering the dynamics of movement of a potato tuber on the surface of a spiral separator, taking into account the conditions that exclude its damage.

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Stone-clod Separation and Its Application to Potato Cultivation in Hokkaido

Cited by 9 publications

References 1 publication

The physical and mechanical properties of potato (Solanum tuberosum L.) tubers as related to the automatic separation from clods and stones

The physical and mechanical properties of potato (Solanum tuberosum L.) tubers as related to the automatic separation from clods and stones

Analytical investigation in the impact interaction of a vibration digger with the body of the root during its extraction from the soil

Mathematical model of the movement of a potato body along the surface of a spiral separator

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