A round robin test for the hand-transmitted vibration from an olive harvester

Lenzuni, Paolo; Deboli, Roberto; Preti, Christian; Calvo, Angela

doi:10.1016/j.ergon.2015.10.006

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…Both studies performed field tests, while the former also used a simulator of the tree (a wooden frame with nine horizontal and nine vertical wires). In [72], laboratory data were found to be statistically consistent with the real field data regarding the front z axis as well as the front and rear x axis. There were significant discrepancies on the accelerations in the rear and front y axis and the rear z axis.…”

Section: Handheld Olive Beatersupporting

confidence: 66%

“…Lenzuni et al [72] and Calvo et al [33] investigated the experienced acceleration owing to the operation of the handheld olive beaters. Both studies performed field tests, while the former also used a simulator of the tree (a wooden frame with nine horizontal and nine vertical wires).…”

Section: Handheld Olive Beatermentioning

confidence: 99%

“…Postural control alterations to lessen acute exposures [79] WBV levels exceeded the Japanese and European threshold limits WBV, heavy implements, high velocities New health management strategies [13] Positive HATV symptoms relationships between the low-moderate and high exposure groups HATV Safety and health awareness programs [72] The simulated olive harvesting performed via this Round Robin test proved to be consistent with field tests HATV Round Robin test could be a viable basis for future research [58] Tractors play a key role in the development of lateral vibrations, while the implements in the horizontal ones;…”

Section: Postural Control Displacementsmentioning

confidence: 99%

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A Review on Ergonomics in Agriculture. Part II: Mechanized Operations

2020

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Background: Musculoskeletal disorders (MSDs) have long been recognized as the most common risks that operation of agricultural machineries poses, thus, undermining the ability to labor and quality of life. The purpose of this investigation was to thoroughly review the recent scholarly literature on ergonomics in agricultural mechanized operations; Methods: Electronic database research over the last ten years was conducted based on specific inclusion criteria. Furthermore, an assessment of the methodological quality and strength of evidence of potential risk factors causing MSDs was performed; Results: The results demonstrated that ergonomics in agriculture is an interdisciplinary topic and concerns both developed and developing countries. The machines with driving seats seem to be associated with painful disorders of the low back, while handheld machines with disorders of the upper extremities. The main roots of these disorders are the whole-body vibration (WBV) and hand-arm transmitted vibration (HATV). However, personal characteristics, awkward postures, mechanical shocks and seat discomfort were also recognized to cause MSDs; Conclusions: The present ergonomic interventions aim mainly at damping of vibrations and improving the comfort of operator. Nevertheless, more collaborative efforts among physicians, ergonomists, engineers and manufacturers are required in terms of both creating new ergonomic technologies and increasing the awareness of workers for the involved risk factors.

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Section: Handheld Olive Beatersupporting

confidence: 66%

Section: Handheld Olive Beatermentioning

confidence: 99%

Section: Postural Control Displacementsmentioning

confidence: 99%

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A Review on Ergonomics in Agriculture. Part II: Mechanized Operations

2020

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“…There are few studies on the impact of noise and HAV exposure in the olive sector. Some studies on hand-harvesters [ 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 ] only assess the HAV exposure received by the worker, with values almost always above the EAV set by Directive 2003/10/EC [ 75 ] and sometimes above the ELV.…”

Section: Occupational Hav and Noise In The Olive Oil Sectormentioning

confidence: 99%

Proposal of Combined Noise and Hand-Arm Vibration Index for Occupational Exposure: Application to a Study Case in the Olive Sector

Nieto-Álvarez

Hoz‐Torres

Aguilar

et al. 2022

IJERPH

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In many production and industrial sectors, workers are exposed to noise and hand-arm vibrations (HAV). European directives have established the maximum limit values or exposure action values for noise and vibration independently. However, in many cases, workers who endure hand-arm vibration also receive high noise levels. This research suggests a procedure to aid the establishment of precautionary measures for workers with simultaneous exposure to both physical agents. This procedure defines a combined index based on the energy doses for both noise and HAV. From this combined index, the suggested methodology allows a recommended exposure time for workers with simultaneous noise and HAV exposure to be calculated. This methodology can be adapted to tackle the relative importance assigned to both agents according to the safety manager and new knowledge on combined health effects. To test this method, a measurement campaign under real working conditions was conducted with workers from the olive fruit-harvesting sector, where a variety of hand-held machinery is used. The results of the study case show that the suggested procedure can obtain reliable exposure time recommendations for simultaneous noise and HAV exposures and is therefore a useful tool for establishing prevention measures.

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“…The influence of field irregularities on the smoothness of agricultural machinery motion was determined in [10]. Statistical properties of field surface irregularity were calculated in [8].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Estimating the dynamics of a machine-tractor assembly considering the effect of the supporting surface profile

Galych

Antoshchenkov

et al. 2021

EEJET

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Results of theoretical studies of dynamics of the machine-tractor assembly taking into account the influence of a bearing surface profile were presented. It was established that in the course of operation, the machine-tractor assembly is exposed to a number of external factors leading to a change of vertical loads on the chassis and the engine. Mathematical models of dynamics of a tractor and a machine and a tractor unit consisting of a tractor of pivotally connected arrangement and a trailed sower were constructed. Such models make it possible to study dynamics and oscillatory processes of multi-element units. A mathematical model of tractor wheel dynamics was formed. Speeds and angles of orientation of elements of the machine-tractor assembly in space were determined. Influence of profile of the bearing surface on the unit elements when moving in the field prepared for sowing and the field after plowing was calculated. Theoretical studies of the influence of the bearing surface profile on dynamics of the machine-tractor assembly were performed on the example of KhTZ-242K tractor and Vega-8 Profi sower (Ukraine). When moving, the sower frame has a smaller amplitude of vibration accelerations than that of the tractor. Accordingly, the tractor has higher oscillation energy because it rests on the ground through its wheels having appropriate stiffness. The sower moves with its working bodies immersed into the soil which leads to a decrease in the amplitude of oscillations. The highest energy of amplitude of oscillation accelerations of the sower frame in the vertical direction was observed at frequencies of 15.9; 23.44; 35.3 and 42.87 Hz. It was found that the increase in working speeds of agricultural units leads to the fact that oscillations of all components reach significant values. This entails an increase in dynamic loads on soil and, as a consequence, its compaction

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A round robin test for the hand-transmitted vibration from an olive harvester

Cited by 9 publications

References 12 publications

A Review on Ergonomics in Agriculture. Part II: Mechanized Operations

A Review on Ergonomics in Agriculture. Part II: Mechanized Operations

Proposal of Combined Noise and Hand-Arm Vibration Index for Occupational Exposure: Application to a Study Case in the Olive Sector

Estimating the dynamics of a machine-tractor assembly considering the effect of the supporting surface profile

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