Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Zhou, Weijian; Wang, Jinwu; Tang, Han

doi:10.25165/j.ijabe.20191204.4865

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…The roller followers were selected to reduce the friction between the cams and the followers. To reduce the rigid impulse between cam and follower, the sine acceleration curve was adopted to the followers [27,28] . The displacement equation of follower in actuating travel is as follows:…”

Section: Design Of Contour Curve Of the Cammentioning

confidence: 99%

Bionic design and performance test of maize grain cleaning screen through earthworm motion characteristics

Wang

Zhang

et al. 2021

International Journal of Agricultural and Biological Engineering

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The maize mixture feeding with a large mass cannot be migrated backward rapidly along the planar reciprocating vibrating screen, and it is easy to accumulate in the front of the screen, which leads to the decrease of screening efficiency. Based on the reverse engineering technology, using the wavy geometry formed during the earthworm (Pheretima guillelmi) moving as a bionic prototype, a bionic screen was designed to make the maize mixture migrate backward rapidly in the front of the screen. The contour curve of earthworm's head in an axial contracted state was extracted and fitted to obtain its equation.Based on the difference of concave position of the lower surface's wavy geometry during the earthworm moving, the motion of the bionic screen was divided into four postures, and the conversion between different postures of the bionic screen was realized by the cam drive mechanism. The kinematics simulation of the bionic screen was carried out through ADAMS, and the displacement and velocity of the bionic screen were analyzed. When the feeding mass of the maize mixture was set at 5 kg/s, 6 kg/s and 7 kg/s, the test results showed that the time of the maize mixture migrated (TOMMM) in the front of the bionic screen was shortened by 0.18 s, 0.71 s, and 1.36 s, respectively, compared with that of planar reciprocating vibrating screen. The total screening time (TST) of the bionic screen was shortened by 1.28 s, 1.33 s, and 1.53 s, respectively. The ability of the maize mixture to be migrated backward was improved. This study can provide a reference for the innovative design of the cleaning screen.

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Section: Design Of Contour Curve Of the Cammentioning

confidence: 99%

Bionic design and performance test of maize grain cleaning screen through earthworm motion characteristics

Wang

Zhang

et al. 2021

International Journal of Agricultural and Biological Engineering

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“…The soil preparation process used here was: artificial soil levelingartificial sprayingburying stubblescompacting, the detail of soil physiochemical property is shown in Table 4. The main test instruments were: 4 types of stubble cutting devices, Hall sensors(Honeywell company, USA), AKC-205B torque sensors (Yuke Taiji Electronics Co., Ltd, Beijing, China), DI-1100 data acquisition cards (DATAQ Instruments Co., Ltd, USA), computer (HP Development Co., Ltd, USA), soil bins and trial vehicles (Jilin University, China), tapeline, cutting rings (volume = 100 cm 3 , Hua Wang Co., Ltd, China), electronic balance (Yajin Electronic Technology Co., Ltd, China), MS-350 moisture meter (Tsingtao Toky Instruments Co., Ltd, China), SC-900 soil compaction meter (Spectrum Technologies Co., Ltd, USA), and soil thermometer (Shenzhen Baiji Biological Technology Co., Ltd, China) [27,28] .…”

Section: Test Equipment and Materialsmentioning

confidence: 99%

Design of bionic locust mouthparts stubble cutting device

Zhao¹,

Guo²,

Lu³

et al. 2020

International Journal of Agricultural and Biological Engineering

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Given the technical problems of low maize stubble breaking efficiency, large cutting torque and high power consumption faced during springtime no-till planting in Northeast China, we designed a high-performance coupling bionic stubble cutting device capable by integrating the structure (multi-segment and serrate) and cutting mode (isokinetic and symmetrical) of locust mouthparts. Methods of bionic construction, mechanism design, theoretical analysis, parameter optimization, Arduino systems and intelligent control were combined to design a planetary gear mechanism and an intelligent speed control system. In particular, the bionic cutting blade could reconstruct the multi-segment and serrate structure of locust mouthparts, while the planetary gear mechanism and the intelligent speed control system jointly comprised the bionic drive system, which could simulate the isokinetic and symmetrical cutting mode, thereby bionically coupling morphological structures and movement patterns. Analysis of comparative tests showed the coupling bionic cutting device could reduce the cutting torque by 26.6%-31.6% and the power consumption by 21.9%-26.1%. This work confirmed that coupling bionic method can significantly improve the stubble cutting efficiency, which was a valuable contribution to the design of stubble cutting device for no-till planter.

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“…When applied in soil with hardness (hardness) higher than 2 MPa, the insertion rod has difficulty penetrating into the soil due to the light weight of the machine, even if increasing the working pressure of the hydraulic cylinder. Xi et al [13,14] designed a tractor rear suspension orchard gas explosion subsoiling and fertilizing machine. This machine is applicable for the injection of liquid fertilizer, which pushes the drill pipe vertically into soil through gas hammer excitation and hydraulic force.…”

Section: Introductionmentioning

confidence: 99%

Parameter optimization and test of hydraulic soil insertion device of orchard gas explosion subsoiling and fertilizing machine

Shen¹,

Zhang²,

Jia³

et al. 2023

International Journal of Agricultural and Biological Engineering

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Hydraulic soil insertion device is a key component of orchard gas explosion subsoiling and fertilizing machine to realize rod fixed point soil insertion and gas fertilizer injection into soil. In order to explore the influence of the main working parameters and structural parameters on the depth and cylinder pressure of the hydraulic insertion device during the insertion process, the working parameters were optimized to ensure the insertion quality and efficiency. In this paper, force analysis was performed on the rod insertion process, and key parameter equation of soil insertion resistance was established. LS-DYNA finite element simulation software was applied to analyze the force variation of the rod during the insertion process. Box-Behnken test optimization design method and Design-Expert V8.0.6.1 software were used to carry out parameter optimization test of hydraulic insertion device. A multivariate quadratic polynomial regression equation was established by setting the engine revolution, insertion rod diameter and insertion time as independent variables, and the operation parameters of the hydraulic insertion device were optimized based on the relationship between the independent variables and the response values. The results showed that the regression equation model based on the response values of insertion depth and cylinder pressure had a good fitting degree. The engine revolution, rod diameter and insertion time all had significant effects on the increase of insertion depth and decrease of cylinder pressure, with interaction between the engine speed and insertion time with the insertion depth, and interaction between any two factors of engine revolution, rod diameter and insertion time with the cylinder pressure. The influences of the test factors on the insertion depth showed a descending order as engine speed, insertion time, and rod diameter. The influences of the test factors on the cylinder pressure showed a descending order as engine speed, rod diameter, and insertion time. Based on the results of insertion depth and cylinder pressure, the optimal combination of parameters was as follows: engine revolution of 1450 r/min; rod diameter of 32 mm; and the insertion time of 8 s. Under this optimal combination, the insertion depth of the hydraulic insertion device was 44.43 cm, and the cylinder pressure was 23.09 MPa. The experimental results showed that the optimal combination of parameters could meet the agronomic requirements of fast and deep insertion, thus providing a theoretical support for the improvement and optimization of hydraulic soil insertion device of gas explosion subsoiling and fertilizing machine.

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Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Cited by 4 publications

References 14 publications

Bionic design and performance test of maize grain cleaning screen through earthworm motion characteristics

Bionic design and performance test of maize grain cleaning screen through earthworm motion characteristics

Design of bionic locust mouthparts stubble cutting device

Parameter optimization and test of hydraulic soil insertion device of orchard gas explosion subsoiling and fertilizing machine

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