Mechanism Study on the Grading of the 5BF-3 Fruits Grading Machine

2012 ◽  
Vol 490-495 ◽  
pp. 233-237
Author(s):  
Xiao Rong Zhou
Keyword(s):  
Physical Experiment ◽  
Virtual Simulation ◽  
Conveyer Belt ◽  
Test Results ◽  
Affecting Factors ◽  
Quadratic Regression ◽  
Mechanism Study ◽  
Experiment Study ◽  
Belt Speed ◽  
Influence Mechanism

The physical experiment study of affecting factors for fruits grading rate is presented by means of the 5BF-3 fruits grading machine and is applying the design of four factors quadratic regression general rotary to grade the spheroid fruit citrus. By using virtual simulation and dynamic to dynamically analyze the test results, ascertain the grading rate influence mechanism of the grading transportation chain speed at the stage of artificially chosen, fruits conveyer belt speed, the fruit graded wooden roller speed and the friction coefficient of the 5BF-3 fruits grading machine are verified.

scholarly journals PARAMETER OPTIMIZATION AND EXPERIMENT OF ORCHARD DOUBLE ROW DITCHING-FERTILIZING MACHINE

2020 ◽  
pp. 9-18
Author(s):  
HongJian Zhang ◽  
ChunBao Xu ◽  
ShuangXi Liu ◽  
Hao Jiang ◽  
Xuemei Liu ◽  
...  
Keyword(s):  
Conveyer Belt ◽  
Test Results ◽  
Double Row ◽  
Factors Affecting ◽  
Design And Optimization ◽  
Belt Speed ◽  
Guide Plate ◽  
Contour Lines ◽  
Test Parameters ◽  
Mechanism Parameter

In order to improve the fertilization uniformity and stability of the orchard double row ditching-fertilizing machine, the design was optimized. Firstly, the factors affecting the movement of the fertilizer particles were analysed in combination with the kinetic model of the fertilizer particles during the falling process. Secondly, the influence of each factor on the fertilization uniformity was analysed by single factor variance. Finally, the Box-Behnken central composite method was used to establish a mathematical model of fertilization uniformity of the orchard double row ditching-fertilizing machine, and regression statistical variance, response surface, and contour lines were used to analyse the influence of each mechanism parameter on the fertilization uniformity. The test results show that: when the test parameters of the conveyer belt speed is within 165~235 r·min-1, the advancing velocity is within 0.8~1.2 m·s-1, and the guide plate angle is changed within the range of 15~45°, the degree of influence of each factor on the fertilization uniformity from high to low is the conveyer belt speed, advancing velocity, the angle of the guide plate, and the conveyer belt speed; when the conveyer belt speed is 214 r·min-1, advancing velocity is 1 m·s-1, and the angle of the guide plate is 37°, the fertilizer coverage reaches 100%, and the fertilization uniformity is increased from 86.31% to 90.73%, and the fertilization stability is improved. The research results provide a theoretical basis for the design and optimization of orchard ditching-fertilizing machine.

Simulation and Experimental Study on Sugarcane Field Excitation to the Cutter

2010 ◽  
Vol 156-157 ◽  
pp. 1105-1108 ◽  
Author(s):  
Xiao Lai ◽  
Shang Ping Li ◽  
Fang Lan Ma ◽  
Zhi Wen Qin ◽  
Jing Hui Zhou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Dynamic Model ◽  
3D Model ◽  
Simulation Analysis ◽  
Physical Experiment ◽  
Virtual Simulation ◽  
Sugarcane Field ◽  
Field System ◽  
Measure Analysis ◽  
Field Excitation

The Sugarcane field excitation has notable influence on the sugarcane cutting quality, but its mechanism has seldom been studied. Based on the dynamic model analysis, this paper measure, analysis and test how the field excitation impacts the vibration of the cutter. After building up 3D model of the vehicle and field system, virtual simulation analysis on it is carried out, deducing that the frequency of field unevenness has notable influence on the vibration of the cutter. In physical experiment, it compares and analyzes the vibration of the cutter and cutting quality under different frequencies of field unevenness. The result shows that, the frequency of field unevenness has magnificent influence on the vibration of the cutter, and the higher the frequency the more deteriorated the sugarcane cutting quality.

Analysis on Actuating Mechanism for Tomato Color Sorting Robot Based on High-Speed Photography

2011 ◽  
Vol 308-310 ◽  
pp. 384-387
Author(s):  
Ruo Yu Zhang ◽  
Za Kan ◽  
Xu Guang Yan ◽  
Wan Chao Hu
Keyword(s):  
High Speed ◽  
Process Analysis ◽  
High Speed Photography ◽  
Conveyer Belt ◽  
Test Results ◽  
Foreign Material ◽  
Color Grading ◽  
Sorting Process

To separate objects (immature tomatoes, foreign material) accurately from tomatoes using actuating mechanism of tomato color grading robot, high-speed photography was used to acquire images the tomato sorting process for studying effect between tomato cast position and track for separating. Test results show that tomatoes cast position affects tomato sorting; tomato track from conveyer belt affects the hitting position of pneumatic ejection finger directly. High-speed photography is used for tomatoes sorting process analysis at high speed, which can be helpful for design of tomato color sorting robot.

Experiment Study on Mechanical Properties of Shotcrete under Heat Injury Environment of High Ground Temperature Tunnel

2013 ◽  
Vol 785-786 ◽  
pp. 291-294 ◽  
Author(s):  
Yu Fan ◽  
Sheng Ai Cui ◽  
Tao Chen ◽  
Zhi Hua Zhou
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Ground Temperature ◽  
Water Tank ◽  
Test Results ◽  
Experiment Study ◽  
Curing Conditions ◽  
Heat Injury ◽  
Humid Environment ◽  
Temperature Impact

With the tunnel growing more long and deep,heat injury problems have become increasingly prominent.In order to analyze how would the environment of high ground temperature impact on compressive strength of shotcrete, experiment was designed to explore the compressive strength of C25 shotcrete at 28d age by simulating environmental. The test results show that: water tank and the oven can more accurately simulate the natural hot-humid and hot-dry environment; Compared to the standard curing conditions, Whether in the hot-humid environment or hot-dry environment, the compressive strength of shotcrete is decreased. Mixed with 25% fly ash can improve the compressive strength of shotcrete in hot-humid environment.

Influence Mechanism of Lime on Strength and Water-Resistance Properties of Phosphogypsum Autoclaved Brick

2012 ◽  
Vol 204-208 ◽  
pp. 1492-1498 ◽  
Author(s):  
Yang Lin ◽  
Jian Xin Cao ◽  
Qian Lin
Keyword(s):  
Thermal Analysis ◽  
Phase Composition ◽  
Water Resistance ◽  
Sem Analysis ◽  
Maximum Strength ◽  
Test Results ◽  
Slag Powder ◽  
Influence Mechanism ◽  
Mineral Compositions ◽  
Phosphorous Slag

Influence mechanisum of lime on the strength and water-resistance properties of phosphogypsum autoclaved brick is exploited for the manufacture of preparing phosphogypsum autoclaved brick. Results of XRD and SEM analysis of phosphogypsum and phosphorous slag powder, influence of lime on the properties of phosphogypsum autoclaved bricks, phase composition, microstructure and thermal analysis of phosphogypsum autoclaved bricks with different lime content, and influence mechanisum of lime on the strength and water-resistance properties development have been discussed. The test results reveal that (a) when the dosage of lime is zero, the major mineral compositions of the autoclaved bricks are CaSO4 and SiO2, thus the strength and water-resistance properties of the bricks are poor, (b) optimum lime to phosphorous slag powder and phosphogypsum ratio yielding maximum strength and Softness coefficient is about 0.03, (c) excess lime beyond the optimum limit (in this case 5%) can remain unreacted and act as weak filler in the phosphogypsum autoclaved bricks leading to reduction in strength and water-resistance properties.

Micro-Mechanism Study and Road Engineering Application of Asphalt Rubber

2013 ◽  
Vol 361-363 ◽  
pp. 1817-1824 ◽  
Author(s):  
Ting Gang Li ◽  
Jin Zhong Li ◽  
Wei Li
Keyword(s):  
Formation Mechanism ◽  
Engineering Application ◽  
Raw Material ◽  
Test Results ◽  
Mechanism Study ◽  
Rubber Content ◽  
Road Engineering ◽  
Road Pavement ◽  
Asphalt Rubber ◽  
Physical Reaction

Based on the results of electron microscope observation, the formation mechanism of asphalt rubber can be explained as followed: both chemical and physical reaction take place when crumbed rubber and base bitumen are mixed together. Physical swelling of the crumbed rubber particles take place during the process, at the same time a layer of gel comes into being on the surface of the crumbed particles, through which the particles connect with each other and form a network structure. Because of the unique formation mechanism of asphalt rubber, the material provide some much better properties than other kinds of bitumen. The main points of choosing raw material and production technology of asphalt rubber is given out based on the results of a series of contrast tests such as different sizes of crumbed, different crumbed rubber content, different reaction time and different reaction temperatures. The good performance of asphalt rubber in the field of road engineering is proven based on the test results of asphalt rubber premix and road pavement.

Testing Analysis on Rock Fatigue Life Due to Affecting Factors under Uniaxial Compression

2011 ◽  
Vol 243-249 ◽  
pp. 2188-2193
Author(s):  
Jian Xi Ren ◽  
Yin He Zhang ◽  
Qing Yuan Li ◽  
Kun Zhang
Keyword(s):  
Fatigue Life ◽  
Uniaxial Compression ◽  
Rock Sample ◽  
Stress Amplitude ◽  
Testing Machine ◽  
Affecting Factors ◽  
Rock Fatigue ◽  
Influence Mechanism ◽  
Function Testing ◽  
Compression Condition

Using the rock mechanics multi-function testing machine named RMT150B, the testing study on rock fatigue life due to different affecting factors under uniaxial compression condition are accomplished. It is the study emphasis that the influence mechanism of rock sample fatigue life due to different stress amplitudes, waveforms and frequencies .It shows that the stress amplitude, waveform and frequency can all remarkably affect the rock fatigue life. The influence essential reason of rock life due to different stress amplitudes and waveforms is the different dissipation of energy. And the influence essential reason of rock life due to different frequencies is the different loading rate of speed.

Basic Mechanics Properties Test of Fly Ash Concrete

2012 ◽  
Vol 238 ◽  
pp. 138-141
Author(s):  
Wei Xie ◽  
Hai Juan Zhang ◽  
Shu Shan Li
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Ash Content ◽  
Early Age ◽  
Test Results ◽  
Fly Ash Concrete ◽  
Influence Mechanism ◽  
Normal Reference ◽  
Test Study

By the test study of basic mechanics properties of concrete with different fly ash content, the influence of the content of fly ash on the compressive strength, flexural strength, splitting tensile strength and static compressive elastic modulus of concrete are analyzed with the explaining of the influence mechanism of fly ash. The test results show that, comparing with the normal reference concrete, the early age strength of fly ash concrete enhances slowly, while the late strength develops rapidly, even overpasses the strength of normal reference concrete.

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