Design and Experimental Investigation of a Bionic Subsoiler with a Multiplex-Modality Shank

2012 ◽  
Vol 184-185 ◽  
pp. 125-129
Author(s):  
Qiang Zhang ◽  
Lu Lu Yu ◽  
Yu Jing Sun ◽  
Miao Hao ◽  
Lu Zhang ◽  
...  
Keyword(s):  
National Standard ◽  
Forward Speed ◽  
Cutting Depth ◽  
Power Requirement ◽  
Design Concepts ◽  
Claw Morphology ◽  
Arc Shape ◽  
Structure Scheme ◽  
Tillage Depth ◽  
Soil Bin

Based on study of animal-claw morphology, a multiplex-modality subsoiler is designed with an intention to decrease its operating resistance. Design concepts and structure scheme of the subsoiler are presented. To analyze the performance of multiplex-modality subsoiler, a multiplex modality sub-soiling shovel and a national standard regulated arc-shape subsoiler (JB/T 9788-1999) are tested in soil bin. Effect of tillage depth and operating speed on the operating resistance of sub-soiling shovels is examined. Type of subsoilers, tillage depth and forward speed, with 2, 3 and 3 levels taken respectively, are considered in experiment. Experiment results show that the multiplex-modality subsoiler, compared with the standard arc-shape subsoiler, sees much lower operating resistance and power requirement against soil. Resistance-decreased index of the multiplex modality subsoiler are 45.3%, 34.4% and 34.2% at 300, 350 and 400mm cutting depth, respectively.

Design and Experiments of a Bionic Hook-Shape Subsoiler

2013 ◽  
Vol 461 ◽  
pp. 50-56
Author(s):  
Qiang Zhang ◽  
Lu Lu Yu ◽  
Hong Lei Jia ◽  
Xian Jun Liu ◽  
Li Zhang
Keyword(s):  
Experimental Tests ◽  
National Standard ◽  
Operating Speed ◽  
Power Requirement ◽  
Design Concepts ◽  
Speed Range ◽  
Arc Shape ◽  
Structure Scheme ◽  
Resistance Decrease ◽  
Soil Bin

Based on study of morphology of animal claws and subsoiling characteristics of subsoiler, a bionic hook-shape subsoiler is designed to decrease its operating resistance and to improve the terrain surface morphology. Design concepts and the structure scheme of the subsoiler are presented. The influences of tillage depth and operating speed on the operating resistance of bionic hook-shape subsoiler are examined in soil bin experimental tests by compared with a standard arc-shape subsoiler regulated by national standard (JB/T 9788-1999). It is proved by experiment results that the bionic hook-shape subsoiler when the operating speed range is 4-5km / h, compared with the standard arc-shape subsoiler, showed much lower operating resistance and power requirement against soil. The resistance-decrease index of the bionic hook-shape subsoiler is 24.1%, 24.4% and 26.5% at 300, 350 and 400mm cutting depth, respectively.

scholarly journals Soil-tool interaction of a simple tillage tool in sand

2019 ◽  
Vol 85 ◽  
pp. 08007
Author(s):  
Lucian V. Fechete-Tutunaru ◽  
Ferenc Gaspar ◽  
Zoltan Gyorgy
Keyword(s):  
Rake Angle ◽  
Cutting Edge ◽  
Factorial Experiment ◽  
Forward Speed ◽  
Response Variable ◽  
Independent Variables ◽  
Edge Angle ◽  
Draft Force ◽  
Tillage Depth ◽  
Soil Bin

This study was focused to experimentally evaluate the draft force on a simple tillage tool operating in different conditions in sand. The soil-tool interaction was evaluated in controlled laboratory conditions in a soil bin. A full multilevel factorial experiment was used with one response variable and four experimental factors. The selected design 3 tools × 3 tillage depth × 3 rake angle × 3 forward speed with two replications had a total of 243 runs. Influence of four independent variables including tillage depth (15, 20, 25 cm), rake angle (25, 35, 50 degrees), forward speed (0.67, 0.98, 1.39 m/s) and cutting-edge angle of the tool (30, 45 and 60 degrees) on draft force as the dependent variable was evaluated.

scholarly journals Effect of Ploughing Depth, Tractor Forward Speed, and Plough Types on the Fuel Consumption and Tractor Performance

2019 ◽  
Vol 9 (1) ◽  
pp. 43-49
Author(s):  
Kareem Ibrahim kareem ◽  
P. Sven
Keyword(s):  
Soil Moisture ◽  
Fuel Consumption ◽  
Agricultural Production ◽  
Soil Moisture Content ◽  
Sandy Loam ◽  
Forward Speed ◽  
Power Requirement ◽  
Primary Tillage ◽  
Loam Soil ◽  
Ploughing Depth

Cost of fuel has a significant impact on the input costs of agricultural production, especially during primary tillage. It is affected by several parameters including tractor forward speed, depths of ploughing, and plough types. The experiment was performed in a Soil Hall at Harper Adams University, United Kingdom, in April 2015. A Massey Ferguson 8480 4WD tractor was used for investigating objectives of this study. The experiment was performed in a sandy loam soil texture at 11.73% soil moisture content and 1.35 (g/cm3) dry bulk density to study the amount of fuel consumption (l/ha) and the performance of tractor with effect of moldboard and disc ploughs as ploughs type, 15 and 20 cm as ploughing depth and 5 and 7 km/h as tractor forward speeds. The results showed that fuel consumption with a disc plough 5% was higher compared to the moldboard. Fuel consumption decreased approximately 8% when tractor at 7 km/h. Fuel consumption significantly decreased about 34% when ploughing depth increased from 15 to 20 cm. The power requirement to operate moldboard plough was higher by about 14% than a disc. The power requirement at speeds of 7 km/h was higher compared to the speeds of 5 km/h by about 27%. When the depth of ploughing increased from 15 to 20 cm, the power requirement increased by about 1.5%.

The Use of Robot with Force Control in Machining of Green Ceramics

2014 ◽  
Vol 805 ◽  
pp. 615-620 ◽  
Author(s):  
Gustavo José Giardini Lahr ◽  
Glauco Augusto de Paula Caurin ◽  
Carlos Alberto Fortulan
Keyword(s):  
Force Control ◽  
Cnc Machining ◽  
High Alumina ◽  
Forward Speed ◽  
Cutting Depth ◽  
Green State ◽  
Isostatic Pressing ◽  
Green Machining ◽  
Porcelain Insulators ◽  
Machining Of Ceramics

This papers studies the use of robots in the green machining of ceramics, specifically, the machining of high alumina porcelain insulators. The green state has very low strength and high brittleness where the forces applied during machining can generate and/or develop defects in the part that will reduce their properties after sintering. This work aims to study the machining by robot models of electrical insulators in 1:10 scale. Blanks were compacted in high alumina porcelain by isostatic pressing and green machined with a manual grinder attached to a Kuka KR16 robot. Models of insulators in gypsum were successfully machined and used for setup and configuration of the process. They were machined with cutting depth 0.87 mm and feed of 20 mm/s, this is the minimum programmable velocity for this robot model, and these parameters for the machining of the green porcelain generated excessive cracks at the tips of the fins. Changing the cutting depth to values of 0.25 mm, an established value in CNC machining, allowed to conclude that insufficient stiffness of the robot together with its high forward speed and excessive vibration of the grinding limits its use for thin thicknesses, although with potential for improvement.

Preliminary Design Concepts for High Solidity Nozzle-Less Radial Inflow Gas Turbine for Small Capacity Gas Turbine Engine

2006 ◽  
Author(s):  
Chetan S. Mistry ◽  
S. A. Channiwala
Keyword(s):  
Mach Number ◽  
Gas Turbine ◽  
Velocity Ratio ◽  
Basic Program ◽  
Preliminary Design ◽  
Power Requirement ◽  
Turbine Engine ◽  
Design Concepts ◽  
Compact Size ◽  
Exit Mach Number

The present work for the design of nozzle-less radial inflow turbine begins with power requirement of 20 kW. Based on the available parameters like temperature, pressure and mass flow rate required for the design are obtained from cycle analysis initially preliminary design of rotor was developed and from the available loss models the efficiency of the turbine was found. After completion of the preliminary design of turbine, it was felt necessary to optimized the result for best efficiency accordingly an analytical study was undertaken to study the influence of different parameters like inlet absolute Mach number, relative exit Mach number, solidity, relative velocity ratio, hub to shroud radius ratio and rotational speed on efficiency. VISUAL BASIC program is developed to study the effect of different parameters on efficiency, for different speed conditions it can be observed that for same solidity and higher speed gives the compact size with less variation in losses and efficiency. The results obtained from analysis also suggest the value of higher solidity but in practical situation that will restrict the flow through runner that by increasing the losses and reducing the efficiency.

scholarly journals Development and Performance Evaluation of Groundnut Digger Elevator cum Heap Formater

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Rajvir Yadav
Keyword(s):  
Field Capacity ◽  
Effective Field ◽  
Depth Of Cut ◽  
Oilseed Crop ◽  
Total Production ◽  
Forward Speed ◽  
Total Quality ◽  
Power Requirement ◽  
Field Efficiency ◽  
And Performance

Groundnut (Archis hypogaea L) or peanut is a major oilseed crop which contributes 40 per cent of the total area and 30 per cent of total production of oilseed crops. In India among the major groundnut growing states, Gujarat is the most important one accounting for 36 % of the total area. The groundnut digger elevator cum heap formater was developed considering various theories related to digger, elevator and heap formater assembly, agronomical parameters of groundnut, functional requirement and general consideration. The main components such as main frame, digging blade, elevator and heap assembly were developed. The developed groundnut digger elevator cum heap formater was able to dig up the groundnut plants with pods and convey them for removing the soil from pods and making heap. The experimental results showed the depth of cut of groundnut digger elevator cum heap assembly was found as 13.00 cm, while width of coverage measure as 60 cm and moisture content (d.b.) of 19.20%. The draft requirement of 235 kgf and power requirement was calculated 7.83 hp with fuel requirement of 2.04 l/h. The theoretical field capacity of digger elevator cum heap formater was 0.12 ha/h while effective field capacity was 0.0935 ha/h with field efficiency of 80.47 %. The digging efficiency were found as 84.18, 85.23 and 86.36 % at the forward speed of 1.5, 2.0 and 2.5 km/h respectively. The total quality of pod was found 176.41, 180.21 and 173.91 gm and pod damage percentage was found 4.37, 4.36 and 4.73 % at forward speed of 1.5, 2.0, 2.5 km/h. The cost of harvesting by developed digger cum heap formater was found to be ₹ 371.98 /h.

Soil Cutting by a Compact Disc Harrow Having Various Disc Arrangements

2019 ◽  
Vol 62 (2) ◽  
pp. 429-437 ◽  
Author(s):  
Zhiwei Zeng ◽  
Ying Chen ◽  
Long Qi
Keyword(s):  
Conservation Tillage ◽  
Compact Disc ◽  
Area Ratio ◽  
Deep Tillage ◽  
Optimal Setting ◽  
New Type ◽  
Soil Cutting ◽  
Tillage Depth ◽  
The Right ◽  
Soil Bin

Abstract. The compact disc harrow (CDH) is a relatively new type of conservation tillage implement. The disc arrangement on the implement is critical to the tillage performance. The objective of this study was to investigate the effects of disc spacing and offset on the tillage performance of a CDH. Tests were conducted in an indoor soil bin using a CDH with three-disc units. The spacing of the two rear discs in each unit was set at 203, 254, or 305 mm, and the front discs were set at one of three offset positions (left, center, or right) relative to the rear two discs. The discs were operated at two different tillage depths: shallow (63.5 mm) and deep (127 mm). The results showed that the soil cutting area ratio (the ratio of disturbed area to the total area of the furrow) decreased as the spacing increased from 203 to 305 mm. In contrast, the soil cutting efficiency (the volume of soil cut per unit quantity energy used) remained constant in the shallow tillage depth and increased in the deep tillage depth. As for the effect of offset, the center position resulted in a soil cutting area ratio of more than 80%, which was superior to the other two offset positions. However, the right offset had the highest efficiencies of 15.3 and 22 m3 MJ-1 in the shallow and deep tillage depths, respectively. The common standard disc spacing of 254 mm with a center offset was not necessarily the optimal setting, depending on the working depth and tillage performance indicators of interest. Keywords: Disc, Offset, Performance, Soil Cutting, Spacing, Tillage.

Design of Test Bench for Automotive Leaf Spring

2013 ◽  
Vol 834-836 ◽  
pp. 1718-1722 ◽  
Author(s):  
Kai Ming Hao ◽  
Wu Bin Xu ◽  
Bing Li ◽  
Xiao Long Feng
Keyword(s):  
Control System ◽  
Structure Analysis ◽  
Test Bench ◽  
Permanent Deformation ◽  
Testing Machine ◽  
National Standard ◽  
Leaf Spring ◽  
Single Function ◽  
Loading System ◽  
Structure Scheme

For improving the conditions of single function, low testing precision, complex operation that exists in the tests of leaf spring testing machine, and on the basis of relevant provisions GBT19844-2005 leaf spring, a test bench for leaf spring with multifunction is designed. Through the structure analysis of leaf spring, a structure scheme of test bench named gantry type is put forward, combined with the testing requirements of the national standard and the spring stress characteristics, the hydraulic loading system and PID(Proportion Integration Differentiation) control system is proposed as well. By this test bench, experiments of the leaf spring for "permanent deformation, stiffness, fatigue" and other aspects related can be conducted, with shorter experimental cycle and higher experimental precision.

scholarly journals Embodiment design of a soil bin for soil-tool interaction study

2021 ◽  
Vol 2070 (1) ◽  
pp. 012229
Author(s):  
A U Karmarkar ◽  
N R Gilke
Keyword(s):  
Soil Moisture ◽  
Moisture Level ◽  
Power Requirement ◽  
Soil Moisture Level ◽  
Embodiment Design ◽  
Operation Speed ◽  
Agriculture Industry ◽  
Draft Force ◽  
Soil Bin ◽  
Selection Of

Abstract The agriculture industry is an important aspect of Indian economy. The changes occurring in global climate and increased frequency of extreme weather conditions pose challenges for agriculture industry. In such unpredictable conditions, achieving required outputs from farming for supporting continuously increasing population necessitates the mechanization of traditional processes. The selection of machinery for such mechanized setup is a key management task. Tractor is one of the farm machines being used in various farm related operations. Thus understanding constraints imposed on selection of a tractor is a primary factor in decision making process. The study has highlighted importance of power requirement for farming operation in tractor selection process. Thus to determine power requirement for farming operation a study of soil-tool interaction is necessary. A soil bin setup is one of the tools for studying the soil-tool interaction. This work presents the conceptual and embodiment design of a soil bin developed to find variation in draft force with respect to variations in the parameters like tillage depth, operation speed and soil moisture level. The tillage depth and operation speed were found to be directly proportional whereas the soil moisture level was found to be inversely proportional to the draft force.

scholarly journals SIMULATION OF DRAFT FORCE FOR THREE TYPES OF PLOW USING RESPONSE SURFACE METHOD UNDER VARIOUS FIELD CONDITIONS

2018 ◽  
Vol 49 (6) ◽  
Author(s):  
S. Almaliki
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Influential Factor ◽  
Silty Clay ◽  
Forward Speed ◽  
Surface Method ◽  
Draft Force ◽  
Tillage Depth ◽  
Models Validation ◽  
Cone Index

In this study a mathematical models were developed to simulate draft force for three types of plows (moldboard, chisel and disk plow). The study was carried out in the experimental field of Agricultural Machinery Department at University of Basrah, which had silty clay soil texture. Independent parameters included three levels of tillage depth (0.15, 0.20 and 0.25m), three forward speeds (0.54, 0.83 and 1.53 m/s) and two levels of cone index (550 and 980 kPa). Response Surface Method (RSM) was utilized to produce models and to analyze results. Acquired results were used to extract accurate model for draft force. The draft force increased by 114% when tillage depth increased from 15 to 25 cm. Increasing forward speed from 0.54 to 1.53 m/s led to increased draft force by 80%. The cone index had positive effect on draft force by 42% when increased cone index from 550 kPa to 980 kPa. The most influential factor in draft force is the tillage depth, followed by the forward speed and cone index. The highest draft requirements were recorded for moldboard plow, followed by chisel and disk plow. Models validation was acceptable ( R-Squared = 0.97) and the draft force could be predicted with reliability of about 95%.

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