Apple Harvesting with A Double Impact Trunk Shaker

Pellerin, R. A.; Millier, W. F.; Throop, J. A.; Lakso, Alan N.; Carpenter, Sam.

doi:10.13031/2013.33769

Cited by 4 publications

(3 citation statements)

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“…Mechanical harvesting of tree fruit crops, including sweet cherry, has been investigated for many decades (Adrian et al, 1965, Pellerin et al, 1982, Peterson and Brown, 1996, Erdoğan et al, 2003, Polat et al, 2007, Zhou et al, 2013, but the commercial adoption for fresh market fruit is still lacking. One of the obstacles for adopting mechanical harvesting to fresh market sweet cherry and other tree fruit is the harvest-induced fruit damage.…”

Section: Introductionmentioning

confidence: 99%

Effect of catching surface and tilt angle on bruise damage of sweet cherry due to mechanical impact

Zhou

Karkee

et al. 2016

Computers and Electronics in Agriculture

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Fruit bruise damage induced by mechanical impact is the most critical obstacle for the application of mechanical harvesting on fresh-market sweet cherries. One of main sources of fruit bruise is the mechanical impact by fruit catching surfaces occurring in fruit collection during mechanical harvesting. The goal of this research was to investigate the effect of cushion material, fruit drop height, and tilt angle of catching surface on fruit bruise damage. Three catching surfaces with five tilt angles from 0° to 60° were used to catch fruits freely dropped from heights of 0.3 to 2.1 m. The impact force and deformation of cushion materials was measured by a force sensing unit and a high speed camera, respectively. Results showed that maximum impact force increased linearly with drop height and was reduced by cushion materials with sufficient thickness. The fruit damage percentages of cushion material 1 and 2 were 25.0%-89.0% and 72.0%-100.0% less than that of non-cushion material at drop height of 0.3 to 2.1 m at 0° tilt angle, respectively. Results also shown catching surfaces with tilt angle reduced bruise damage substantially. Damage percentage of catching surfaces at 60° tilt angle was around 75.0% less than that at 0° non-cushion and cushion material when fruit were dropped from 1.5 m. The results show that catching surfaces with cushion materials at a tilt angle of 60º might be a promise for mechanical harvesting of fruits with low fruit bruise damage.

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Section: Introductionmentioning

confidence: 99%

Effect of catching surface and tilt angle on bruise damage of sweet cherry due to mechanical impact

Zhou

Karkee

et al. 2016

Computers and Electronics in Agriculture

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“…Besides, a spring activated trunk shaker with either double-impact or recoil-impact mode was studied to harvest semi-vigorous open-center apple trees. The results showed that the trunk shaker with double-impact or recoil-impact mode caused less apple damage than inertial trunk shaker [82] . Trunk shaker technique was also used to be applied to the mechanical harvesting of citrus fruit.…”

Section: Trunk Shaking System (Tss)mentioning

confidence: 97%

“…In 1969, the shake-and-catch frame method was proposed to harvest apples investigated by Marshall et al [80] . And then, straddle-frame trunk shaker and mobile limb shaker were designed for harvesting apples respectively [27,81,82] . Later, a kind of canopy apple harvester using a continuous horizontal shaking method was also developed [83] .…”

Section: Basic Principles Of Vibratory Fruit Harvestingmentioning

confidence: 99%

Recent progress and future prospects for mechanized harvesting of fruit crops with shaking systems

Pu¹,

Wang²,

Yang³

et al. 2023

International Journal of Agricultural and Biological Engineering

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Mechanized harvesting technologies with shaking systems for fruit industry have been widely investigated and significantly developed over the past several decades which were presented by a large amount of literature. This paper reviews the research and development progress of mechanized harvesting of fruits systematically with a focus on the theoretical study, fruit crop variety, shaking system categories, abscission chemical agents, and their actual applications. Based on the comprehensive review, mechanized harvesting systems for different fruit crops appear multifarious shaking modes with various vibratory mechanisms and structural dimensions. Major advantages in the development of fruit mechanical harvesting with effective vibratory patterns and catching frames provide a series of economic and agronomic benefits, such as reducing labor costs, promoting standardized planting, and increasing productivity. However, fruit injury and tree damage are the main reasons why mechanical shaking systems are rarely used for fresh fruit harvesting because of tenderness and frangibility of the fruit crops. Therefore, more efforts should be concentrated on the innovative shake-and-catch system with suitable frequency and amplitude to achieve low fruit damage or even nondestructive harvesting for fresh fruit market. This overview summarized the advantages and bottlenecks of these shaking systems for fruit harvesting and proposed the challenges and some constructive prospective viewpoints aimed at the major issues of mechanical harvesting techniques. In addition, employing sorting technologies to classify the postharvest fruits provide a new direction for the further development of mechanized harvesting in high-value fruit crops, as well as bring more benefits to growers and increase their interest in equipment investment on the mechanical shaking harvester for the fruit industry.

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Effect of Shaking Amplitude and Capturing Height on Mechanical Harvesting of Fresh Market Apples

et al. 2019

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Apple Harvesting with A Double Impact Trunk Shaker

Cited by 4 publications

References 0 publications

Effect of catching surface and tilt angle on bruise damage of sweet cherry due to mechanical impact

Effect of catching surface and tilt angle on bruise damage of sweet cherry due to mechanical impact

Recent progress and future prospects for mechanized harvesting of fruit crops with shaking systems

Effect of Shaking Amplitude and Capturing Height on Mechanical Harvesting of Fresh Market Apples

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