In this study, a double-shaft type sweet potato rice-planting and rice-returning machine was designed. The structure of the whole as well key components were analyzed, influence each factor on operation quality studied. results study showed that order length broken stems leaves rate checking follows: roller speed > toggle clearance spacing; stubble height injury to potatoes = spacing. optimal combination working parameters in field test 1944 r/min for roll speed, 132 mm spacing, 20...

To date, mechanized picking of famous tea (bud, one bud leaf) causes a lot damage. Manual results in high-quality but the process is inefficient. Therefore, order to improve quality mechanically harvested buds, study bionic beneficial reduce damage rate mechanical picking. In this paper, manual flexible studied, and bladeless mechanics model developed. The relationship between properties structural deformation stalks obtained by microstructural observation experimental analysis determination...

The performance of existing rice-paddy weeding machines is not optimal. In this study, the influence installation angle weeding-wheel blade on cutting resistance and soil-slippage ability was analyzed. optimal wheel (i.e., at which to minimal disturbance speed soil maximal) shown be< 20°; numerical simulation showed actual value be 0°. Different depths (30, 40, 50 mm), rotation (120, 180, 240 r/min), weeder forward speeds (0.3, 0.6, 0.9 m/s) were used as test factors, rates seedling injury...

To address the current problems of large positioning error, low picking efficiency, and high cost tea shoot picking, a continuous precise harvesting scheme for shoots based on two-dimensional (2D) perspective is designed in this study. A high-speed method standardized plantation assembly line type was proposed. First, 2D view recognition model tips multi-disturbance environment constructed, accurate point coordinates were determined by combining skeleton algorithm curve growth. avoid losses...

Aiming to solve problems in organic rice weeding a type of post-seat machine was designed for paddies. The differences the strengths and lengths root systems between seedlings weeds were studied, motion track wheel analyzed obtain structural parameters wheel. Then, model designed. interaction process soil paddy fields simulated based on discrete element method, so as investigate working resistance change tendency orderliness disturbances. An orthogonal test this study, with three factors:...

The design and performance of tillage components such as subsoiler are generally characterized by the fracture features soil mass in agricultural engineering, thus making improvements those tools challenging due to fact that mechanisms cannot be accurately explored implemented. To alleviate this issue, paper, a physical three‐point bending (TPB) test is conducted for investigating fractural fragmental characteristics compacted clay beams (CCB) with offset notches under framework mixed‐mode I...

Aiming at the low mechanization of paddy field weeding and lack dedicated agricultural machinery for in China, a self-propelled system machine was designed. The overall structure working principle were illustrated analyzed. interaction mechanism wheel-soil during model established, then, wheel traction surface flatness selected as evaluation indexes discrete element simulation experiment. steering performance, stability, over ridge ability analyzed, experiment carried out. results show that...

Sandy loam soils are widespread and important for agricultural soil use. The lateral stress caused by the loosening shovel of a subsoiler produces disturbances in sandy soil, reducing compaction improving structure. To explore variation transmission due to operation double-wing lattice point-type sensors was arranged bin, generated subsoiling measured shallow, medium, deep layers. experimental results show that when is transferred position different distances.The shows sinusoidal fluctuation...

The dyeing properties of the iterative polyester (an upgraded version polyester) and ordinary dyed with disperse dyes were compared. effects amount carrier CWP-N, time, temperature dye concentration on uptake color depth K/S values fabric investigated. At same washing rubbing fastness coordinates different kinds results show that are improved significantly compared polyester. rate is obviously higher than transition lower without at 98 °C for 60 min 95%, while under conditions 87%. In...

A type of weeding device was designed to solve the problems weeders in paddy fields, such as high rice seedling damage and low rate. The structure machine working principle are illustrated. avoiding mechanism were analyzed. parts weeder that contacted soil designed. contact process between spring tine simulated using discrete element method study change mechanical behavior during process. To verify performance machine, forward speed hoeing depth taken experimental factors, rate selected test...

One major constraint in developing a combine harvester cum seed drill (CHCSD) is the limited space available for attachment of no-till furrow openers. Investigating straw stubble cutting and opening performance small-sized disc openers critically important development optimization seeding assemblies. A set down-scaled sliding knife notch-type opener (SKO), modified (MNO) smooth-type (SDO), with upper size limit 160 mm, were designed fabricated field testing. Experimental results show that...

The problems of the uneven strip shape and low efficiency tea de-enzyming carding machines in working process were addressed by analyzing trajectory particles establishing a force model diagram pot slot. three-dimensional geometric machine was drawn using UG software, simulation established EDEM software. work improved, rate broken reduced software to simulate movement slot under different heights convex bar, angle inclination, number slots. average velocity interaction curve obtained....

This study aims to investigate the influence of moisture contents and grouser heights on traction force exerted different surfaces in track-soil interaction system. A sandy loam was employed for acquiring soil parameters, such as kc, kφ, n, C, Ca, δ, φ, γ. These parameters were obtained through mean bevameter technique. Moisture changed from low high levels, which could be listed 1.4%, 8.0%, 14.7%, 22.2% at last. The direct shear penetration tests performed each condition content,...

Abstract In response to the challenges of low automation and a lack continuous processing system for Taiping Houkui tea, this study proposed design scheme line built prototype testing by combining production requirements characteristics withered leaves, existing relevant equipment. First, physical properties tea were determined. A simulation was performed using Hertz–Mindlin model, motion states leaves obtained under different conditions define parameter range experimental platform verify...

In order to investigate the soil reactions influenced by single plate with inclination angles from 0° 75°, an in-house code of 2D DEM has been developed in this study. An iron flat penetrated a constant velocity 1 mm/s penetration test, maximum vertical force was 753.8 N which generated plate. addition, it found that less angle, greater force. Furthermore, horizontal direction at 45° angle. This research can provide theoretical reference for optimizing tools contact soil, example,...

The force analysis of the tea leaves on U-shaped tank resistance wire heating groove-type de-enzyming and carding machine is conducted, then track SolidWorks based analysis. coupled steady state thermal carried out two kinds machinery. comparative test content three prototypes gas trough machines are average value tests considered. results presented. output prototype 3.80 kg h-1, strip rate 88.38%, surface temperature pot groove reaches requirement finishing temperature.

Introduction The uneven heating of the U-shaped multi-groove pot in gas-fired tea fixation and shaping machines results inconsistent quality leaves. Methods A three-dimensional model machine was established by using SOLIDWORKS software. With use ANSYS finite element software, orthogonal experiment method applied to analyze optimize design spacing arrangement, shape parts, heat conduction temperature field. Results show that optimized parts significantly reduce difference on surface pot,...

Conventional winnowing machines rely on manual operation and adjust their parameter settings based experience. These problems have led to poor wind sorting results. In order improve the accuracy efficiency of tea machine, a double-layer automatically controlled machine has been designed in this study. Firstly, an automatic control system programmable logic controller is established. Secondly, AC motor technology used achieve adjustment baffle position. The prototype tests show that input...

Sandy clay loam has the characteristics of both sand and clay. Because these characteristics, frictional resistance adhesive occur between soil tillage tool. The combined effect two forces increases external friction angle tool, thus increasing working resistance. To address this issue, study investigated coupling high pressure hot air on by using a self-developed device to measure angle. Test results showed that high-pressure tool formed curtain layer which acted as lubricant, thereby...

Small, handheld furrow openers using rotary blades usually have limited power, making it necessary to minimise their operating power consumption, which mainly occurs with the soil throwing and movement of blades. To this end, is investigate consumption such tillage implements, particularly relationship between conditions based on patterns. In study, we performed a field test furrow-opening blade round, physical tracers monitor movement. The total was positively related depth but not...