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Bioresource and Agricultural Engineering

Selected Works

Lloyd D Snell

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Full-Text Articles in Life Sciences

Force And Moment Analysis Of Stacked Counter Rotating Eccentric Mass Tree Shaker Energy-Wheel System, Lloyd Dale Snell Apr 2015

Force And Moment Analysis Of Stacked Counter Rotating Eccentric Mass Tree Shaker Energy-Wheel System, Lloyd Dale Snell

Lloyd D Snell

The tree shaker is a high throughput hydro-mechanical systems used in nut and fruit harvest. Many commercial tree shakers use stacked counter rotating eccentric mass energy-wheels to dislodge the crop from the tree by attaching and shaking the trunk. Tree shakers are known to cause tree trunk damage by approach impact, barking, and bruising of the tree trunk. Tree trunk damage, catastrophic or accumulative, could account for a 4% lifetime production loss, 1408 kg/hectare.;The energy-wheels are commonly known to create planer pulse forces. The pulse is created by the rotation of eccentric mass about a fixed common shaft ...


Nut And Fruit Harvesting Apparatus, Systems And Methods, Lloyd D. Snell Apr 2015

Nut And Fruit Harvesting Apparatus, Systems And Methods, Lloyd D. Snell

Lloyd D Snell

In an example, a system for harvesting nut and fruit trees includes an electro-mechanical shaker head, a transport mechanism, and a control system. The electro-mechanical shaker head is configured to dislodge fruit or nuts from a target tree using a linear energy system. The transport mechanism is configured to position the electro-mechanical shaker head on the target tree. The control system is communicatively coupled to the shaker head and configured to dynamically control shaker head operation.