scholarly journals OPERATIONAL PERFORMANCE OF AN AGRICULTURAL TRACTOR UNDER DIFFERENT TIRE INFLATION PRESSURES IN THE SUBSOILING OPERATION

2020 ◽  
Vol 7 (4) ◽  
pp. 59-64
Author(s):  
Arthur Gabriel Caldas Lopes ◽  
Tiago Pereira da Silva Correia ◽  
Gabriel Pastor de Barros Lima ◽  
Isabela Dias de Souza ◽  
Wesley Matheus Cordeiro Fulgêncio Taveira ◽  
...  
Keyword(s):  
Experimental Design ◽  
Fuel Consumption ◽  
Field Capacity ◽  
Operational Performance ◽  
Agricultural Machinery ◽  
Inflation Pressure ◽  
Mechanization Laboratory ◽  
The University ◽  
Efficiency And Productivity ◽  
Agricultural Tractor

For the agricultural tractor's best performance, it must be correctly adapted to the job. Among other factors, the adequacy of tire inflation pressure is one of the most important and may influence the operation's efficiency and productivity. This study aimed to evaluate an agricultural tractor's operational performance with different tire inflation pressures in the subsoiling operation. The study was carried out in an experimental area of the Agricultural Machinery and Mechanization Laboratory of the experimental farm “Água Limpa,” belonging to the University of Brasília. The experimental design used was in randomized blocks with the following values, 206.8 kPa (30 psi), 137.9 kPa (20 psi), and 68.9 kPa (10 psi), of inflation pressure for agricultural tractor tires. The mechanized set used was a tractor model TM7020 2WD MFWD pulling a subsoiler with five shanks, SPCR model, in a Latossolo Vermelho-Amarelo. The higher inflation pressure resulted in greater slippage, advance, hourly fuel consumption, and lower speed and operational field capacity.

scholarly journals PERFORMANCE OPERATIONAL AND COSTS OF MECHANIZED STUMP EXTRACTION SETS

2020 ◽  
Vol 28 ◽  
pp. 326-335
Author(s):  
Tiago Pereira da Silva Correia ◽  
Arthur Gabriel Caldas Lopes ◽  
Francisco Faggion ◽  
Guilherme Rodrigues de Brito ◽  
Saulo Fernando Gomes de Sousa
Keyword(s):  
Experimental Design ◽  
Fuel Consumption ◽  
Field Capacity ◽  
Operational Performance ◽  
Economic Optimization ◽  
Forestry Sector ◽  
Mechanized Removal ◽  
The One ◽  
Agricultural Tractor ◽  
Eucalyptus Urograndis

Stump extraction can be carried out in different ways, among which the mechanized removal is the most usual in the forestry sector. Information regarding the operation with cutting implements is important in the context of decision taking, operational and economic optimization of the activity. The objective of this work was to evaluate the operational performance and mechanized costs of different stump extractors implements in an eucalyptus harvested area. The work was carried out in an Eucalyptus urograndis clones harvested area where the treatments adopted for removal were the following: agricultural tractor + shredder head (T1), excavator + shovel bucket (T2); excavator + shredder head (T3), excavator + stump shear (T4) and bulldozer mat + stump pullers (5). The experimental design was the completely randomized, with four replications per treatment, where it was evaluated the operational efficiency (Ef), operational field capacity (Ofc), extraction productivity (Ps), hourly fuel consumption (Fch), hourly cost (HC), operational (OC) and by extracted stump (SC). For the conditions of the work, the T5 was the one with the highest Ef, Ofc, and Ps, lowest OC and SC.

scholarly journals DESEMPENHO OPERACIONAL E DISTRIBUIÇÃO LONGITUDINAL DE SEMENTES POR SEMEADORA DE PRECISÃO SUBMETIDA À DIFERENTES CALIBRAGENS DO RODADO

Nativa ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 679-686
Author(s):  
Tiago Pereira da Silva Correia ◽  
Arthur Gabriel Caldas Lopes ◽  
Leandro Augusto Felix Tavares ◽  
Wesley Matheus Cordeiro Fulgêncio Taveira ◽  
Paulo Roberto Arbex Silva
Keyword(s):  
Experimental Design ◽  
Fuel Consumption ◽  
Surface Condition ◽  
Soil Surface ◽  
Field Capacity ◽  
Operational Performance ◽  
Longitudinal Distribution ◽  
Tire Pressure ◽  
Accuracy Index ◽  
Tukey Test

As regulagens da semeadora-adubadora são cruciais para a correta distribuição dos insumos, melhorando assim o desempenho operacional. O objetivo do trabalho foi avaliar a distribuição longitudinal de sementes e o desempenho operacional de uma semeadora-adubadora de precisão em função de diferentes pressões de insuflagem dos pneumáticos. O delineamento experimental utilizado foi de blocos casualizados, sendo os tratamentos três pressões de insuflagem dos pneus (138, 241 e 345 kPa), repetidos em seis blocos, totalizando 18 parcelas de 60 m de comprimento e 4,5 m de largura cada. Realizou-se avaliações de consumo de combustível horário (Chc), velocidade operacional (V), deslizamento dos pneus (DP), capacidade de campo operacional (Cco), distância entre sementes (DES), coeficiente de variação do espaçamento entre sementes (CVes) e índice de precisão da distribuição (IP). Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey (P ≤ 0,05). Os resultados indicaram maior Chc e DP pela pressão 345 kPa. Menor falha, dupla, CVes, e maior IP, foram obtidos pela pressão 241 kPa. Cco não diferiu. Salienta-se que para cada tipo de máquina e condição de superfície do solo, seja necessário o refinamento da pressão dos pneus e regulagens da máquina. Palavras-chave: pressão; insuflagem; consumo de combustível; patinagem; plantabilidade.   Operational performance and longitudinal distribution of seeds by precision seeder submitted to different calibrations of the wheel   ABSTRACT: The settings of the seeder-fertilizer are crucial for the correct distribution of inputs, thus improving operational performance. The objective of the work was to evaluate the longitudinal distribution of seeds and the operational performance of a precision seed drill-fertilizer in function of different tire insufflation pressures. The experimental design used was randomized blocks, with three tire insufflation pressures from the seeder-fertilizer (138, 241 and 345 kPa), repeated in six blocks, totaling 18 plots of 60 m long and 4.5 m wide each. Hourly fuel consumption (Chc), operational speed (V), tire slip (DP), operational field capacity (Cco), distance between seeds (DES), variation coefficient of spacing between seeds were performed (CVes) and distribution accuracy index (IP). The data were subjected to analysis of variance and the means compared by the Tukey test (P ≤ 0.05). The results indicated higher Chc and DP by the 345 kPa pressure. Minor failure, double, CVes, and higher IP, were obtained by pressure 241 kPa. Cco did not differ. It should be noted that for each type of machine and soil surface condition, refinement of tire pressure and machine adjustments is necessary. Keywords: pressure; insufflation; fuel consumption; skating; plantability.

scholarly journals DESEMPENHO OPERACIONAL E CUSTO DA SUBSOLAGEM COM E SEM RODADO DUPLO NO TRATOR AGRÍCOLA

2020 ◽  
Vol 35 (3) ◽  
pp. 317-329
Author(s):  
Arthur Gabriel Caldas Lopes ◽  
Tiago Pereira da Silva Correia ◽  
Guilherme Rodrigues De Brito ◽  
Alexandre Pinto Ferreira de Almeida Faria ◽  
Paulo Roberto Arbex Silva
Keyword(s):  
Fuel Consumption ◽  
Agricultural Soils ◽  
Field Capacity ◽  
Effective Field ◽  
Mechanical Resistance ◽  
Tukey Test ◽  
The University ◽  
E Mail ◽  
Agricultural Tractor ◽  
Resistance To Penetration

DESEMPENHO OPERACIONAL E CUSTO DA SUBSOLAGEM COM E SEM RODADO DUPLO NO TRATOR AGRÍCOLA   ARTHUR GABRIEL CALDAS LOPES1, TIAGO PEREIRA DA SILVA CORREIA1, GUILHERME RODRIGUES DE BRITO1, ALEXANDRE PINTO FERREIRA DE ALMEIDA FARIA1, PAULO ROBERTO ARBEX SILVA2    1Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected], [email protected], [email protected], [email protected] 2Departamento de Engenharia Rural, Universidade Estadual Paulista, Av. Universitária, nº 3780, Altos do Paraíso, Cep: 18610-034, Botucatu/SP, Brasil. E-mail: [email protected]   RESUMO: A descompactação dos solos agrícolas pode ser realizada com diferentes números de rodados do trator agrícola. O objetivo do trabalho foi avaliar o desempenho operacional e econômico da operação de subsolagem utilizando trator agrícola equipado com e sem rodado duplo traseiro. O experimento foi realizado na Fazenda Experimental Água Limpa, pertencente a Universidade de Brasília. O delineamento experimental utilizado foi o inteiramente casualizado em arranjo fatorial 2 x 3 (Duas configurações de rodado, simples e duplos; e três velocidades operacionais, 3,2; 4,2 e 4,9 km h-1), com quatro repetições. O subsolador utilizado foi o modelo SPCR com cinco hastes e ponteiras sem asa, tracionado por um trator modelo TM7020 (4 x 2 TDA) com 109,58 kW de potência. Foram avaliadas a resistência mecânica do solo a penetração (RMP), consumo horário de combustível (Chc) e patinagem dos rodados, capacidade de campo efetiva (Cce) e custo horário (CH). Os dados foram submetidos a análise de variância e as médias comparadas pelo teste de Tukey (P ≥ 0,05). Concluiu-se que a subsolagem com rodado duplo e menor velocidade possibilita menor patinagem, Chc e CH. A Cce foi maior com rodado duplo e maior velocidade.   Palavras-chaves: consumo de combustível, patinagem, subsolador.   PERFORMANCE OPERATIONAL AND SUBSOILING COST WITH AND WITHOUT DOUBLE WHEELS IN THE AGRICULTURAL TRACTOR   ABSTRACT: Agricultural soils decompaction can be carried out with different numbers of wheels on the agricultural tractor. The aim of the work was to evaluate the operational and economic performance of subsoiling operation using an agricultural tractor equipped with and without rear double wheels. The experiment was carried out at Fazenda Experimental Água Limpa, belonging to the University of Brasília. The experimental design used was completely randomized in a 2 x 3 factorial arrangement (two wheel configurations: single and double; and three operational speeds, 3.2; 4.2 and 4.9 km h-1), with four repetitions. The subsoiler used was the SPCR model with five rods and tips without wing, pulled by a tractor model TM7020 (4 x 2 TDA) with 109.58 kW of power. Soil mechanical resistance to penetration (RMP), hourly fuel consumption (Chc) and slip, effective field capacity (Cce) and hourly cost (CH) were evaluated. The data were subjected to analysis of variance and the means compared by the Tukey test (P ≥ 0.05). It was concluded that subsoiling with double wheels and lower speed allows less slip, Chc and CH. The Cce was bigger with double wheels and higher speed.   Keywords: fuel consumption, slip, subsoiler.

scholarly journals Operational Performance of an Agricultural Tractor as a Function of Weight, Inflation Pressure and Tire Life

2013 ◽  
Vol 21 (4) ◽  
pp. 379-386
Author(s):  
R.T. Spagnolo ◽  
M.A.Z. Palma ◽  
C.E.S. Volpato ◽  
J.A. Barbosa ◽  
R.A. Nunes
Keyword(s):  
Operational Performance ◽  
Inflation Pressure ◽  
Agricultural Tractor

scholarly journals Energetic efficiency of an agricultural tractor in function of tire inflation pressure

2013 ◽  
Vol 33 (4) ◽  
pp. 758-763 ◽  
Author(s):  
Leonardo de A. Monteiro ◽  
Daniel Albiero ◽  
Kleber P. Lanças ◽  
André V. Bueno ◽  
Fabricio C. Masiero
Keyword(s):  
Engine Speed ◽  
Front Wheel ◽  
Operational Performance ◽  
Energetic Efficiency ◽  
Inflation Pressure ◽  
Tire Pressure ◽  
Displacement Speed ◽  
Agricultural Tractor ◽  
Tractor Engine ◽  
Engine Power

The tire inflation pressure, among other factors, determines the efficiency in which a tractor can exert traction. It was studied the effect of using two tire inflation pressures, 110.4 kPa in the front and rear wheels, 124.2 kPa in the front wheel and 138 kPa in the rear wheels, the energetic efficiency of an agricultural tractor of 147 kW of engine power, in the displacement speed of 6.0 km.h-1, on track with firm surface, with the tractor engine speed of 2000 rpm. For each condition of the tire pressure, the tested tractor was subjected to constant forces in the drawbar of 45 kN and 50 kN, covering 30 meters. It was used a randomized complete block with a 2x2 factorial arrangement (tire pressure and drawbar power) with four replications, totaling 16 experimental units. Data were subjected to analysis of variance, using the Tukey test at 5% probability for comparison averages. The lowest hourly and specific fuel consumption, the lowest slippage of the wheelsets and the highest efficiency in the drawbar was obtained with the tire inflation pressure of 110.4 kPa in the front and rear tires of the tractor, highlighting that lower pressures improve energetic and operational performance of the tractor.

scholarly journals Operational performance of a tractor-seeder according to the velocity and working depth

2016 ◽  
Vol 20 (3) ◽  
pp. 280-285 ◽  
Author(s):  
Deivielison X. S. Macedo ◽  
Francisca E. de A. Nicolau ◽  
Henryque C. F. do Nascimento ◽  
Enio Costa ◽  
Carlos A. Chioderoli ◽  
...  
Keyword(s):  
Experimental Design ◽  
Fuel Consumption ◽  
Agricultural Production ◽  
Operational Performance ◽  
Good Efficiency ◽  
Production Chain ◽  
Agricultural Equipment ◽  
Satisfactory Performance ◽  
Normal Spacing

ABSTRACT The sowing process is one of the most important steps in agricultural production chain, requiring a good efficiency in order to avoid seed and plant population losses. In order to achieve a satisfactory performance of the seeder, the agricultural implement needs to be properly adjusted. Therefore, the present study aimed to verify both the operational performance and sowing quality of the agricultural equipment, depending on different working depths and different operating velocities. The experimental design was a factorial, with two theoretical velocities and three working depths. The velocity of 6.8 km h-1 achieved both a good operating consumption and a low fuel consumption per working area and when associated with working depth of 0.05 m provided better operational performance. However, the operating velocity of 4.8 km h-1 made it possible to increase the number of normal spacing of seeds, an improved quality of sowing and the possibility of greater population.

scholarly journals Tractor perfomance as a function of speed and seeder’s tire inflation pressure

2010 ◽  
Vol 40 (8) ◽  
pp. 1726-1731 ◽  
Author(s):  
Carlos Eduardo Angeli Furlani ◽  
Jorge Wilson Cortez ◽  
Anderson de Toledo ◽  
Rouverson Pereira da Silva ◽  
Danilo Cesar Checchio Grotta ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Experimental Design ◽  
State University ◽  
Inflation Pressure ◽  
Paulo State ◽  
Draft Force ◽  
Agricultural Tractors ◽  
Displacement Speed ◽  
Tractor Gear ◽  
Agricultural Tractor

The performance of agricultural tractors under field conditions results from the interaction between tire and wheel affected by displacement speed. This work was developed to assess the performance of an agricultural tractor under different seeder's tire inflation pressure (518; 483 and 414kPa) and in two different gears providing speeds of 3.0 and 6.0km h-1. The experiment was performed at Jaboticabal Campus of São Paulo State University (UNESP). The experimental design used was entirely randomized in a 2-factor factorial design (3x2) with four replications. The draft force was influenced by the gear as well as by the required power; however, tire inflation pressure in the seeder did not change these parameters. Also, fuel consumption was influenced only by the tractor gear. Energy consumption was greater as speed increased, caused by gear shifting. The displacement speed was greater for the 518kPa pressure due to a lesser slippage in the seeder under this pressure. Tractor slippage did not change.

scholarly journals DESEMPENHO DE UM TRATOR AGRÍCOLA EM OPERAÇÕES DE PREPARO DE SOLO NO ESTADO DE MATO GROSSO

Nativa ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 288
Author(s):  
Diego Augusto Fiorese ◽  
Thiago Martins Machado ◽  
Rodrigo Sinaidi Zandonadi ◽  
Renan Felipe Almeida de Araujo ◽  
Gabriel Felipe Da Silva Ricardo ◽  
...  
Keyword(s):  
Experimental Design ◽  
Fuel Consumption ◽  
The State ◽  
Soil Tillage ◽  
Mato Grosso ◽  
Ground Speed ◽  
Fuel Savings ◽  
Drawbar Pull ◽  
Agricultural Tractor ◽  
Tillage Operations

Objetivou-se avaliar o desempenho de um trator de 134 kW com quatro equipamentos de preparo do solo, sendo um escarificador 11 hastes, um subsolador 5 hastes, uma grade 28x28 (G1) e uma grade 24x26 (G2). O delineamento foi em blocos casualizados com esquema fatorial, onde avaliou-se principalmente a demanda de tração e o consumo de combustível em duas marchas de trabalho compatíveis para cada operação. As máximas demandas de tração foram: 44,9 kN (escarificação); 38,1 kN (subsolagem); 31,1 kN (G1); e 24,5 kN (G2). Os consumos operacionais não tiveram variação entre as marchas (4,5 e 6 km h-1) para a escarificação e subsolagem, com médias de 16,9 a 23,5 L ha-1, respectivamente. Com as grades, houve variação de 1,5 a 2 L ha-1 de economia quando operando em marchas mais rápidas, tendo-se o menor consumo de 12,9 L ha-1 (G1 a 7,3 km h-1) e 11,6 L ha-1 (G2 a 9,2 km h-1). Conclui-se que para mobilização do solo a até 0,3 m de profundidade, a escarificação é mais vantajosa que a subsolagem, promovendo economia de 6,6 L ha-1. Recomenda-se utilizar as marchas de maior velocidade, dentro do permitido para o tamanho do trator e para a qualidade da operação.Palavras-chave: força de tração, consumo de combustível, escarificação, subsolagem, gradagem. AGRICULTURAL TRACTOR PERFORMANCE IN SOIL TILLAGE OPERATIONS IN THE STATE OF MATO GROSSO - BRAZIL ABSTRACT:The objective of this work was to evaluate the performance of a 134 kW tractor with four tillage equipment, with a 11 shank light subsoiler (for scarification), a 5 shank heavy subsoiler, a Offset disk harrow 28x28 (G1) and a Offset disk harrow 24x26 (G2). The experimental design was in randomized blocks in factorial scheme, where traction demand and fuel consumption was evaluated in two ground speed for each operation. The maximum drawbar pull was: 44.9 kN (scarification); 38.1 kN (subsoiling); 31.1 kN (G1); and 24.5 kN (G2); The operational consumption did not vary between the ground speed allowed by the different gears (4.5 and 6 km h-1) for scarification and subsoiling, varying from 16.9 and 23.5 L ha-1, respectively. With the disk harrows, there was a variation of 1.5 to 2 L ha-1 of fuel savings when operating at higher gear, with the lowest consumption of 12.9 L ha-1 (G1 at 7.3 km h-1) and 11.6 L ha-1 (G2 at 9.2 km h-1). It was concluded that for soil mobilization up to 0.3 m depth, scarification is more advantageous than subsoiling, promoting an economy of 6.6 L ha-1. It is recommended to use higher speed gears, within the limits allowed for tractor size and operation quality.Keywords: drawbar pull, fuel consumption, scarification, subsoiling, harrowing.

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