Effect of mechanical properties of rice stem and its fiber on the strength of straw rope

Tang, Zhong; Liang, Yaquan; Wang, Meilin; Zhang, Hao; Wang, Xinzhong

doi:10.1016/j.indcrop.2022.114729

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…The suspension speed is an important parameter when calibrating the performance of the cleaning system. The fluid velocity of the air flow field needs to be between the grain and the impurities to achieve the cleaning effect [16] .…”

Section: Experimental Design For Determination Of Grain Suspension Speedmentioning

confidence: 99%

Cross-flow fan on multi-dimensional airflow field of air screen cleaning system for rice grain

Liang

Tang

Zhang

et al. 2022

International Journal of Agricultural and Biological Engineering

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With the advancement of agricultural mechanization and the development of combine harvesters, cleaning devices play a very important role in the grain harvesting process. In this study, the DFPF-25 type material floating velocity measuring device was used to measure the suspension velocity of each component of the grain material. Secondly, the DFQX-3 cleaning device was used to conduct the airflow field test, then the fluid simulation of the cleaning shoe was carried out. The results showed that the simulation and experimental results were in a good agreement under the conditions of single fan and double fan. The high-speed flow velocity formed by the double fan system at the tail of the cleaning shoe was 4.76 m/s (simulation) and 4.03 m/s (experiment), which had outstanding cleaning effects on unfilled grains, long stems, and short stems. To sum up, the installation of the cross-flow fan at the rear of the cleaning shoe has a positive effect on the cleaning effect of the combine harvester, and the double-fan cleaning structure composed of the cross-flow fan and the centrifugal fan can significantly improve the cleaning effect.

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Section: Experimental Design For Determination Of Grain Suspension Speedmentioning

confidence: 99%

Cross-flow fan on multi-dimensional airflow field of air screen cleaning system for rice grain

Liang

Tang

Zhang

et al. 2022

International Journal of Agricultural and Biological Engineering

Self Cite

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“…However, all of the above resource recovery methods re mixed material is first shredded, particularly the knotted feature, to ensur sequent process can be carried out smoothly. The straw in the mechanized recovery waste has a lower moisture higher degree of lignification than the growing season [27], so it has high sti toughness, while the residual film is a light and flexible polyethylene mater is more flexible than straw. Therefore, the straw can be effectively crushed crushing such as impact and shearing, but the residual film will be greatly difficult to crush due to its own physical properties, and it will be wrapp crushing equipment.…”

Section: Introductionmentioning

confidence: 99%

“…The straw in the mechanized recovery waste has a lower moisture content and a higher degree of lignification than the growing season [27], so it has high stiffness and low toughness, while the residual film is a light and flexible polyethylene material [28], which is more flexible than straw. Therefore, the straw can be effectively crushed by traditional crushing such as impact and shearing, but the residual film will be greatly deformed and difficult to crush due to its own physical properties, and it will be wrapped around the crushing equipment.…”

Section: Introductionmentioning

confidence: 99%

Design and Test of a Sliding Cutting Device for the Plastic Mulch Waste

Guo

Luo

et al. 2023

Sustainability

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Agricultural mulch waste that is mechanically recycled has a high resource value. It has been found that the mulch is tightly entangled in the crop straw, forming a knotted feature that prevents further resource utilization. Traditional cutting tools were found to be ineffective in breaking up the knotted feature. In response to the above problems, a sliding cutting device for mechanically recovered mulch waste was proposed and built. The structure of the device and key components were designed and analyzed. A three-factor five-level orthogonal test was conducted and regression variance analysis was performed with the Central Composite Design (CCD) module in Design expert 8. The relationship model was constructed between the test factors such as supporting motor speed a, cutting-support rotation speed ratio b, and cutting edge angle c and the response indicators such as film breakage rate y1 and knotted feature removal rate y2. The influence law between each key parameter with its significant interaction and the waste crushing effect was analyzed, and the optimum combination of parameters of the crushing device were obtained. Under the same conditions, the errors between the physical test values and the model prediction values of the two response indicators were 2.17% and 3.52%, respectively, indicating that the verification test results were basically consistent with the model prediction results.

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“…Since the creation of ropes for tying knots thousands of years ago, the ropes then become an indispensable part in various fields for human society, [ 1–3 ] which involving manufacture, [ 4,5 ] transportation, [ 6 ] fishery, [ 7 ] and especially, the security and rescue applications. [ 8 ] During the long‐time practical actions, the functional simplicity and mechanical vulnerability [ 9,10 ] always motivated the generation of rescue rope technology, and spontaneously enormous efforts had been focused on the performance enhancement technological iteration. And with the novel materials, [ 11 ] neoteric design, [ 12,13 ] innovative braiding technic, [ 14 ] and multifunction [ 15 ] being applied, rescue ropes could satisfy the diversified demands of various groups, different situations and complex environments, in which they could not only maintain excellent tensile strength and shape stability, but also be provided unprecedented characteristics (thermostability, electroconductibility, reflective, or insulative) and innovative experience.…”

Section: Introductionmentioning

confidence: 99%

A Smart Self‐Powered Rope for Water/Fire Rescue

et al. 2022

Adv Funct Materials

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Rescue rope plays an indispensable role in the emergency rescue. And with the continuous development of modern society, rescue rope has been gradually developed from only with the single mechanical function to the multi‐functional rescue rope. However, the lack of smart active warning for dangers usually leads to injury or even death at complex especially some extreme environment. Herein, a smart self‐powered rope is developed by integrating fiber‐based Zn battery unit and traditional rope unit based on the mature braiding technology, which performs desirable electrochemical performance (specific capacity of 31.1 mAh cm−3 and stable cycling stability of 81.95% after 1000 cycles). Moreover, the floatable self‐powered rope and thermoduric self‐powered rope are demonstrated in extreme environment to indicate their potential application for practical water/fire rescue. Therefore, smart active response is successfully realized with the integration toward fiber‐based Zn battery and rescue rope, which largely shorten the rescue time to protect the safety and health of the human body. This study provides an effective strategy of the construction of smart rope used in emergency rescue.

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Effect of mechanical properties of rice stem and its fiber on the strength of straw rope

Cited by 10 publications

References 29 publications

Cross-flow fan on multi-dimensional airflow field of air screen cleaning system for rice grain

Cross-flow fan on multi-dimensional airflow field of air screen cleaning system for rice grain

Design and Test of a Sliding Cutting Device for the Plastic Mulch Waste

A Smart Self‐Powered Rope for Water/Fire Rescue

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