Avaliação dos níveis de ruído, luz e calor em máquinas de colheita florestal

Minette, Luciano José; Silva, Emília P. da; Souza, Amaury Paulo de; Silva, Kátia R.

doi:10.1590/s1415-43662007000600017

Cited by 22 publications

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“…This indicates that the values found are below the limit of exposure allowed by Brazilian legislation, which is 85 dB (A) for an 8-hour daily exposure, but above the comfort threshold, which is 65 dB (A). Similar results are described by other authors in studies carried out with the same types of machines analyzed in this study (Messingerová et al, 2005;Minette et al, 2007). Under these working conditions, the operator may have a reduction on productivity and performance, as well as the risk of hearing loss and extra-auditory effects.…”

Section: Marzano Flcsupporting

confidence: 90%

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Proposal for an Ergonomic Conformity Index for Evaluation of Harvesters and Forwarders

2017

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-Context: In mechanized forestry work, the ergonomic conditions of the workplace affects operator's health, performance and productivity. Originality: A comparison of different forest machines becomes complex in case where it is required analysis of several ergonomic factors simultaneously. There are several methods of ergonomic analysis however, a more complete methodology that considers several ergonomic factors and produces an index that represent the ergonomic condition of the machine is needed. Objective: Propose a methodology to determining an Ergonomic Conformity Index to evaluate Harvesters and Forwarders of different brands. Methodology: The ECI was determined initially basing in four relevant ergonomic factors: noise, vibration, thermal environment and air quality. These factors were evaluated utilizing four Harvesters and two Forwarders in eucalyptus timber harvesting operations. For each factor, a score was given according to its compliance with the established parameters. The ECI was obtained from an average of the scores given to each factor. The index ranges from zero to one, so that lower values indicate worse ergonomic conditions. Results: All the analyzed machines had continuous noise between 75.0 and 82.6 dB (A) and whole-body vibration between 0.27 and 0.70 m s -2 . HV1 and HV2 presented thermal environment in accordance with the established criteria, other machines showed deficiencies in this regard. All the machines presented non-conformities in the air quality, except HV2. The ECI of Harvesters HV1, HV2, HV3 and HV4, were 0.83; 0.88; 0.71; 0.63. The ECI of Forwarders FW1 and FW2 were 0.58 and 0.79. Conclusion: The determination of the ECI allowed an evaluation and comparison between analyzed forest machines. The machine with the higher ECI had only one non-conformity, and it was related to noise inside the cab. The machine that got the lower ECI presented non-conformities for all the factors. Keywords: Forest harvesting; Forest mechanization; Occupational hygiene. ÍNDICE DE CONFORMIDADE ERGONÔMICA PARA MÁQUINAS FLORESTAIS

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Section: Marzano Flcsupporting

confidence: 90%

“…Ergonomic factors that influence the work in the forest sector have been analyzed by several authors (Bovenzi and Betta, 1994;Kallunki et al, 2004;Minette et al, 2007). However, studies contemplate each factor in isolation.…”

Section: Introductionmentioning

confidence: 99%

Proposal for an Ergonomic Conformity Index for Evaluation of Harvesters and Forwarders

2017

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“…Differently, ergonomic guidelines for forest machines consider ergonomically great a value lower than 65 dB (A) for the machine turned on and lower than 80 dB (A) for the machine in operation (Skogforsk, 1999). In general, forest machines have noise levels above those permitted by Brazilian legislation (Minette et al, 2007), which can cause various side effects to the health of operators, such as tinnitus, increased blood pressure and heart rate, insomnia, stress and irritability, as well as NIHL -Noise-Induced Hearing Loss, characterized by reduced hearing acuity resulting from prolonged exposure and irreversibility (Aybek et al, 2010;Guedes et al, 2010). To avoid these problems, the use of personal protective equipment is of fundamental importance.…”

Section: Discussionmentioning

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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“…Conforme Minette et al (2007) começou-se a perceber que para aumentar o rendimento da operação e diminuir o índice de acidentes o operador deveria estar perfeitamente relacionado com seu posto de trabalho, operando com atenção, melhor visibilidade, comandos ajustados à sua postura de trabalho e com conforto e segurança. Logo, a otimização dos fatores ergonômicos é capaz de aumentar a eficiência com que o sistema homem-máquina executa suas funções (Debiasi et al, 2004).…”

Section: Introductionunclassified

Distribuição dos comandos de operação em tratores agrícolas nacionais com até 55 kW de potência

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et al. 2012

Rev. bras. eng. agríc. ambient.

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R ESU M O and ISO 15077 (1996) for determining the regions of range for the operator seated and the position of controls operation in reference to the SIP. In the analysis of longitudinal vertical profile, the frequently used controls were present in greater numbers in the Comfort Zone in the tractor Valtra A750 (38,5% of controls). In the same profile, the tractor John Deere 5603 showed 60,0% of its controls located within the Access Zone, which also showed the lowest percentage of controls in the Inaccessible Zone of the tractor (20,0% of controls). In the upper horizontal profile, the tractor Massey Ferguson 4275 showed 60,0% of its controls in the Comfort Zone, while Valtra A750 showed the highest percentage of controls located in the Access Zone and the lowest percentage in the Inaccessible Zone with 38,5 and 23,0%, respectively.

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Avaliação dos níveis de ruído, luz e calor em máquinas de colheita florestal

Cited by 22 publications

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Proposal for an Ergonomic Conformity Index for Evaluation of Harvesters and Forwarders

Proposal for an Ergonomic Conformity Index for Evaluation of Harvesters and Forwarders

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

Distribuição dos comandos de operação em tratores agrícolas nacionais com até 55 kW de potência

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