Avaliação Da Exposição Ocupacional À Vibração De Corpo Inteiro Em Máquinas De Colheita Florestal

Almeida, Simone Formigoni; Abrahão, Roberto Funes; Tereso, Mauro José Andrade

doi:10.1590/01047760201521011446

Cited by 14 publications

(6 citation statements)

References 5 publications

(4 reference statements)

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“…In the forestry sector, particularly in mechanized activities and because of the inadequacy of work stations, long working hours and the lack of work organization led occupational diseases to occupy a prominent place in concerns regarding the health and safety of workers (TEWARI; DEWANGAN, 2009;SILVA et al, 2013;SILVA et al, 2014;ALMEIDA et al, 2015;SOUZA et al, 2015). Such a finding is a clear demonstration that this risk group has low tolerability, with substantial risk, requiring actions to reduce its impact on operators who work in such activities (SCHETTINO et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Ergonomic Evaluation of Agricultural Tractors Used in Forestry Operations

Machado

Schettino

Colen

et al. 2020

Reveng

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The objective of this work was to evaluate farming machines adapted to forestry work and to verify if their characteristics meet the safety, ergonomics and working conditions necessary to maintain the health and safety of the operators. Thus, three farming tractors were selected, with a closed cabin and a minimum power of 73.5 kW, a widely used specification in the forestry sector. The following ergonomic parameters were considered: acess to the cab, cab dimensions, visibility, seat, controls and operation, work posture, cabin air conditioning, noise, lighting and maintenance aspects. The evaluations were based on the guidelines contained in the “Ergonomic Guidelines for Forest Machines” of the Swedish Forestry Research Institute, developed for forestry machines. The results showed that all the evaluated machines presented ergonomic standards below those indicated in all evaluated aspects, particularly related to access to the work station and difficulties during mechanical maintenance, besides the necessity of adopting forced postures during the working day due to operator’s seats. It was concluded that the farming machines adapted for work in forest processes presented significant gaps in relation to the ergonomic aspects, which represents high and imminent risks of development of occupational diseases in their operators, as well as the predisposition to work accidents.

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Section: Resultsmentioning

confidence: 99%

Ergonomic Evaluation of Agricultural Tractors Used in Forestry Operations

Machado

Schettino

Colen

et al. 2020

Reveng

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“…According to Almeida et al (2015), vibrations may trigger neurological, muscular or vascular disorders and osteo-articular lesions, in the case of vibrations transmitted to the hand-arm system and pathologies in the lumbar region, and injuries of the spine in the case of vibrations transmitted to the entire body.…”

Section: Schettino S Et Almentioning

confidence: 99%

Work Precariousness: Ergonomic Risks to Operators of Machines Adapted for Forest Harvesting

et al. 2017

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-This study aimed to assess different types of machines adapted for mechanized forest harvesting activities in order to quantify the degree of compliance with ergonomic principles applicable to forest machines, as well as the ergonomic risks to which workers are exposed. The following machines were evaluated: a feller buncher adapted into a wheel loader; a mini skidder coupled to an agricultural tractor; and a forest loader adapted to an agricultural tractor; operating in the states of Paraná and Minas Gerais. Biomechanical working conditions were assessed by applying a checklist for simplified assessment of the workplace biomechanical conditions. The forced postures assessment was performed using the REBA -"Rapid Entire Body Assessment" method. In turn, ergonomic classification was through guidelines contained in the ergonomic classification manual "Ergonomic Guidelines for Forest Machines". Moreover, the environmental factors noise, temperature and vibration to which the operators of these machines were exposed were assessed. The results showed all assessed machines had ergonomic standards below those indicated in all assessed aspects, mainly related to access and dimensions of the workplace, need to adopt forced postures during working hours, and exposure to environmental factors assessed above tolerance limits. It is concluded that machines adapted for use in forest harvesting processes have shown significant gaps in relation to ergonomic aspects, presenting high and imminent risk of development of occupational diseases in their operators.Keywords: Forest operations; Forest mechanization; Occupational health. PRECARIZAÇÃO DO TRABALHO: RISCOS ERGONÔMICOS AOS OPERADORES DE MÁQUINAS ADAPTADAS PARA COLHEITA FLORESTALRESUMO -Este estudo teve como objetivo avaliar diferentes tipos de máquinas adaptadas para as atividades de colheita florestal mecanizada, de forma a quantificar o grau de atendimento aos princípios ergonômicos aplicáveis às máquinas florestais, bem como os riscos ergonômicos aos quais os trabalhadores estão expostos. Foram avaliadas as seguintes máquinas: um feller buncher adaptado em uma pá carregadeira de rodas; um mini skidder acoplado a um trator agrícola; e um carregador florestal adaptado a um trator agrícola; operando nos estados do Paraná e Minas Gerais. As condições biomecânicas do trabalho foram avaliadas através da aplicação de um check-list para avaliação simplificada das condições biomecânicas do posto de trabalho. A avaliação das posturas forçadas foi realizada utilizando o método REBA -"Rapid Entire Body Assessment". Por sua vez, a classificação ergonômica foi através das diretrizes contidas no manual de classificação ergonômica "Ergonomic Guidelines for Forest Machines". Ainda, foram avaliados os fatores ambientais ruído, temperatura e vibração aos quais os operadores destas máquinas estavam expostos. Os resultados apontaram que todas as máquinas avaliadas apresentaram padrões ergonômicos abaixo dos indicados em todos os aspectos avaliados, principalmente relacionados ao ace...

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“…However, changes in engine speed and hydraulic pump flow can positively or negatively affect the ergonomics of forest machine operators, since all machine commands are activated by buttons and joysticks. Research has found that wood harvesting operations are arduous and uncomfortable, as they are carried out in the same posture (sitting), transmit vibration to operators during 75% of the workday, and present cognitive and motor demands, with high levels of repeatability (GERASIMOV & SOKOLOV, 2014;ALMEIDA et al, 2015). According to Caffaro et al (2016) forest machine operators need solutions that provide the reduction of wholebody vibration values.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Harvester Operation Mode on Ergonomic Parameters of Operators

Santos

Valente

Fernándes

et al. 2022

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Changes in the way of operating forest machines causes a reduction in fuel consumption, however it can affect ergonomic factors of the operators. Thus, the objective of this research was to evaluate ergonomic parameters of the operation with harvester in different modes of operation. The operating modes were obtained by changing the engine speed and flow rate of the hydraulic pump. The machine was programmed to operate at engine speeds of 2,060; 2,000; 1,950; and 1,900 rpm and hydraulic pump flow of 300; 295; 290 l min-1, totaling 12 operating modes. The research was carried out on the average tree volumes of 0.08; 0.12; and 0.16 m³ tree-1. The Acceleration values resulting from normalized exposure (Aren) and the TOR (Real Occupancy Rate) - TOMCAR (Maximum Occupancy Rate considering Repetitive Activities) were measured. The data were submitted to analysis of variance and when significant compared by the Tukey test. Changes in the machine's operating mode cause significant decreases in Aren values. A execução da operação deslocamento e busca expõem os operadores aos maiores valores de aceleração resultante de exposição normalizada. A operação com harvester se caracteriza como causadora de doenças ocupacionais. The execution of the displacement and search operation exposes operators to the highest values of acceleration resulting from normalized exposure. The operation with harvester is characterized as causing occupational diseases.

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Avaliação Da Exposição Ocupacional À Vibração De Corpo Inteiro Em Máquinas De Colheita Florestal

Abstract: , onde, de acordo com a mesma metodologia, o tempo de exposição máxima não deveria ultrapassar 1h35min. A Garra Traçadora apresentou os níveis mais próximos e dentro das recomendações das referidas normas: 0,99 m . s -2

Cited by 14 publications

References 5 publications

Ergonomic Evaluation of Agricultural Tractors Used in Forestry Operations

Ergonomic Evaluation of Agricultural Tractors Used in Forestry Operations

Work Precariousness: Ergonomic Risks to Operators of Machines Adapted for Forest Harvesting

Influence of the Harvester Operation Mode on Ergonomic Parameters of Operators

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