Design and Experiment of Self-Propelled System for Paddy Field Weeder Based on the Interaction Mechanism of Wheel-Soil

Tian, Liang; Cao, Chengmao; Qin, Kuan; Ge, Jianli; Fang, Liangfei

doi:10.1590/1809-4430-eng.agric.v42n1e20210095/2022

Cited by 5 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The team has developed a paddy-field inter-row weeder ( Figure 1 ) that typically contains rake-tooth weeding wheels, a frame, front and rear vehicle wheels, a hoeing-depth-adjustment device, and related accessories ( Tian et al., 2022 ). The most important working part is the inter-row weeding device, installed in front of the driver’s seat between the front and rear wheels of the weeding machine.…”

Section: Methodsmentioning

confidence: 99%

Optimization and validation of blade parameters for inter-row weeding wheel in paddy fields

Zhang

Tian²,

Cao³

et al. 2022

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

The performance of existing rice-paddy weeding machines is not optimal. In this study, the influence of the installation angle of the weeding-wheel blade on cutting resistance and soil-slippage ability was analyzed. The optimal blade angle of the weeding wheel (i.e., the angle at which the resistance to the weeding wheel is minimal and the disturbance speed of the soil maximal) was shown to be< 20°; numerical simulation showed the actual optimal value to be 0°. Different weeding depths (30, 40, and 50 mm), rotation speed of weeding wheel (120, 180, and 240 r/min), and weeder forward speeds (0.3, 0.6, and 0.9 m/s) were used as test factors, and the rates of seedling injury and weeding were used as performance-evaluation criteria to optimize the machine in a secondary orthogonal-rotation combination test. Field experiments showed that the weeding wheel can exhibit optimal working performance under the operating conditions of weeding depth of 39 mm, rotation speed of 175 r/min, and forward speed of 0.6 m/s. The seedling injury and weeding rates were 4.4% and 88.2%, respectively, which were consistent with the numerically predicted results and met the agronomic requirements. This study provides a technical reference for the improvement of paddy-field weeding components.

show abstract

Section: Methodsmentioning

confidence: 99%

Optimization and validation of blade parameters for inter-row weeding wheel in paddy fields

Zhang

Tian²,

Cao³

et al. 2022

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, the JKR model provides attractive cohesion; even if the particles are not in direct contact, they have a certain attractive force. They can be calculated by Equations ( 16) and (17).…”

Section: Modeling Of Wheel-soil Interactionsmentioning

confidence: 99%

“…In the field of agricultural machinery, Liang Tian established an interaction model between weeder wheels and paddy soil. Additionally, he conducted discrete element simulation and field experiments, and the results showed that the wheel could meet the requirements of a paddy field [17]. Zhewu Chen proposed a new type of curved-rim wheel suitable for paddy fields in which finite elements were used to simulate the interaction between the wheel and soil for wheel improvement design.…”

Section: Introductionmentioning

confidence: 99%

A Bionic Walking Wheel for Enhanced Trafficability in Paddy Fields with Muddy Soil

Chen,

Xu,

Song

et al. 2024

Biomimetics

View full text Add to dashboard Cite

To improve wheel trafficability in soft and muddy soils such as paddy fields, a bionic walking wheel is designed based on the structural morphology and movement mode of the feet of waders living in marshes and mudflats, similar to the muddy soil of paddy fields. The bionic walking wheel adopts the arrangement of double-row wheel legs and staggered arrays to imitate the walking posture of waders. The two legs move alternately, cooperate with each other, and improve the smoothness of movement. The cam inside the bionic walking wheel is used to control the movement mode of the feet. The flippers open before touching the ground to increase the contact area and reduce sinking, and the toes bend and grip the ground while touching the ground to increase traction. Multi-rigid-body dynamics software (Adams View 2020) is used to simulate the movement of the wheel during the wading process, and the movement coordination and interference between the wheel legs are analyzed. The simulation results show that there is no interference between the parts and that the movement smoothness is good. The interaction between the bionic walking wheel and muddy soil was analyzed via coupled EDEM–ADAMS simulation, and the simulation analysis and experiments were conducted and compared with those for a common paddy wheel. The results showed that the bionic walking wheel designed in this paper improved the drawbar pull by 113.56% compared with that of a common paddy wheel and had better anti-sinking performance. By analyzing the effect of toe grip on traction, it was found that the soil under the feet can be disturbed to provide greater traction when the toe is bent downward. This study provides a reference for improving the trafficability of walking mechanisms in soft and muddy soils, such as paddy fields.

show abstract

“…Research has shown that weed control in paddy fields during the tillering stage not only achieves the highest weed removal rates but also attains optimal economic efficiency [ 4 , 5 ]. Thus, early weed control and removal are essential [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Various mechanical weed control methods have been developed, including the weeding turtle robot designed by Nakamura et al [ 19 ]. Tian et al designed a self-propelled paddy field weeding machine and conducted dynamic modeling research on the interaction between the walking wheel and soil, providing support for the motion model of the paddy field walking chassis [ 6 ]. Tang et al designed a weeding wheel with rake teeth to bury the weeds between the rice rows [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Biomimetic Duckbill-like Vibration Chain for Physical Weed Control during the Rice Tillering Stage

Fang,

Luo,

Wang

et al. 2023

Biomimetics

View full text Add to dashboard Cite

The widespread use of chemical herbicides has jeopardized concerns about food safety and ecological consequences. To address these issues and reduce reliance on chemical herbicides, a physical weed control device was developed for the tillering stage in paddy fields. This device features a biomimetic duckbill-like vibration chain that effectively controls weed outbreaks. The chain penetrates the soft surface soil of the paddy field under gravity and rapidly stirs the soil through vibration, leading to the detachment of the weed roots anchored in the surface layer. Simultaneously, the device avoids mechanical damage to rice seedlings rooted in deeper soil. This study aimed to investigate the effects of chain structural parameters (the number of chain rows, vibration amplitude, and length of chains) and operational parameters (vibration frequency and working velocity) on weed control efficiency and rice seedling damage. Through a central composite regression field test, the optimal device structure and operational parameters were determined. The optimization results demonstrated that a vibration amplitude of 78.8 mm, a chain length of 93.47 cm, and 3.4 rows of chains, along with a vibration frequency and working velocity ranging from 0.5 to 1.25 m/s, achieved an optimal weeding effect. Under the optimal parameter combination, field test results demonstrated that approximately 80% of the weeds in the field were effectively cleared. This indicates that the design of the biomimetic duckbill-like vibration chain weeding device exhibits a relatively superior weeding performance, offering a practical solution for the management of weeds in rice fields.

show abstract

Design and Experiment of Self-Propelled System for Paddy Field Weeder Based on the Interaction Mechanism of Wheel-Soil

Cited by 5 publications

References 8 publications

Optimization and validation of blade parameters for inter-row weeding wheel in paddy fields

Optimization and validation of blade parameters for inter-row weeding wheel in paddy fields

A Bionic Walking Wheel for Enhanced Trafficability in Paddy Fields with Muddy Soil

Design and Experiment of a Biomimetic Duckbill-like Vibration Chain for Physical Weed Control during the Rice Tillering Stage

Contact Info

Product

Resources

About