Method Research and Structural Design of Segmented Shrimp Clamping

Shi Xiong (), Qiaojun Luo, Junlue Li, Yunyun Feng, Ling Gan, Shenghe Bai and Xianfa Fang
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Shi Xiong: Key Laboratory of Modern Agricultural Intelligent Equipment in South China, Guangdong Institute of Modern Agricultural Equipment, Guangzhou 510630, China
Qiaojun Luo: Key Laboratory of Modern Agricultural Intelligent Equipment in South China, Guangdong Institute of Modern Agricultural Equipment, Guangzhou 510630, China
Junlue Li: Key Laboratory of Modern Agricultural Intelligent Equipment in South China, Guangdong Institute of Modern Agricultural Equipment, Guangzhou 510630, China
Yunyun Feng: Key Laboratory of Modern Agricultural Intelligent Equipment in South China, Guangdong Institute of Modern Agricultural Equipment, Guangzhou 510630, China
Ling Gan: Key Laboratory of Modern Agricultural Intelligent Equipment in South China, Guangdong Institute of Modern Agricultural Equipment, Guangzhou 510630, China
Shenghe Bai: The State Key Laboratory of Soil, Plant and Machine System Technology, Beijing 100083, China
Xianfa Fang: The State Key Laboratory of Soil, Plant and Machine System Technology, Beijing 100083, China

Agriculture, 2022, vol. 12, issue 12, 1-22

Abstract: Clamping is the key factor that restricts the full-process mechanization of directional shrimp peeling. To solve the problem of difficult clamping caused by the uncertainty of shrimp position after orientation, a segmented shrimp clamping method was proposed by analyzing the relationship between shrimp conveying and clamping conditions. The contact force relationship on the shrimp meat was deduced based on mechanical analysis of the clamping process, and it was concluded that the number of segmented clamping units should be increased during the clamping process to reduce the pressure of the clamping units on the shrimp meat. A segmented shrimp clamping mechanism was designed for adaptive shrimp clamping, conveying and discharging. The profile curve model of the clamping surface was built by analyzing the shrimp section profile characteristics. According to ADAMS kinematics simulation analysis, no shrimp fell off or was damaged during the clamping process, which verified the design rationality of the segmented shrimp clamping mechanism. According to the single-factor test on a newly built shrimp clamping test bench, the optimal rotation speed range of the segmented clamping mechanism was found to be 10–20 r/min, the clamping success rate was over 92%, and the shrimp integrity rate was no less than 99%. The comparison test and performance test results showed that the segmented clamping mechanism had stronger adaptability and better clamping effect under the condition of variable interval feeding. Therefore, the segmented clamping mechanism is capable of practical application and can create stable clamping conditions for shrimp peeling.

Keywords: aquatic machinery; shrimp; clamping; dynamics simulation; experimental study (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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