Assessment of Hand-Arm Vibration in Semi-Mechanized Gardening Activities

Lima, Roldão Carlos Andrade; Rocha, Qüinny Soares; Cazani, Ana Carolina; Santos, João Eduardo Guarnetti dos; Simões, Danilo

doi:10.1007/s42417-022-00480-5

Cited by 4 publications

(3 citation statements)

References 52 publications

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“…For the end of the finger to easily capture branch A, the absolute speed of the end of the finger in positions K, that is, at the height h of the location of the branch relative to the surface of the field, must Vкhave directions relative to from Vп ⃗⃗⃗⃗⃗ by an angle α, which is less than the friction angle ȹ of the branch and the finger. With this condition, the quantity Vп ⃗⃗⃗⃗⃗ was also determined Vм ⃗⃗⃗⃗⃗ [3,4].…”

Section: Methodsmentioning

confidence: 99%

Parameters of finger stalk lifter cut branches in intensive gardens

Shoumarova,

Abdillaev,

Berdimuratov

et al. 2023

E3S Web of Conf.

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In Uzbekistan, the areas of intensive orchards are expanding, in which branches are regularly pruned according to agrotechnical rules. In intensive orchards, the number of fruit trees is usually greater, so cut branches occupy most of the row-spacing area. They interfere with many operations, so they must be removed. Usually, this work is done manually. True, some rakes collect cut branches and take them out of the field. The parameters of existing rakes do not always meet the requirements, so the authors proposed a branch pick-up that works satisfactorily. This article provides a rationale for its kinematic parameters. This branch pick-up also allows you to pick up short-cut branches in intensive orchards.

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Section: Methodsmentioning

confidence: 99%

Parameters of finger stalk lifter cut branches in intensive gardens

Shoumarova,

Abdillaev,

Berdimuratov

et al. 2023

E3S Web of Conf.

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“…On the other hand, the frequent use of these machines in wood harvesting has caused the emergence of ergonomic adversities-whether biomechanical problems, repetitive strain injuries, work-related musculoskeletal disorders, noise, or vibrations, among others [5][6][7]. The physical aspect derived from mechanical vibration stands out among the adversities to which self-propelled forest machine operators are exposed.…”

Section: Introductionmentioning

confidence: 99%

Measurement Time in the Evaluation of Whole-Body Vibration: The Case of Mechanized Wood Extraction with Grapple Skidder

Lima,

Minette,

Simões

et al. 2023

Forests

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The grapple skidder is a self-propelled forestry machine that is used for the extraction of trees in wood harvesting—commonly used in full tree systems. Moving this machine can expose operators to occupational hazards of physical origin, among which whole body vibration stands out. However, the measurement of this risk agent does not have a standard measurement time, being performed for periods of approximately 30 min—disregarding the time of the daily workday. In view of this, it was analyzed whether occupational exposure to whole body vibration transmitted to grapple skidder operators using different measurement times complies with the guidelines for preventative purposes. Thus, measurements of whole-body vibration were carried out along three orthogonal axes over a period of one hour and over a daily workday of eight hours—by which were measured the daily (8 h) vibration exposure for the l-axis and the vibration value. The acceleration values in the three evaluated axes were higher for the daily working day, denoting the influence of the measurement time. In addition, the vibration dose value resulted in values above the action limit for both evaluations; however, the daily workload was highlighted—indicating the presence of higher vibration peaks over a longer measurement time. Thus, the assertiveness and influence of measurement times over the daily working day for whole-body vibration transmitted to grapple skidder operators is evidenced.

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“…Indeed, workers are exposed in their workplace to various environmental factors that can affect their health. These factors include physical agents such as vibration [ 6 , 7 , 8 ] and noise [ 9 , 10 , 11 ], which can cause various pathologies and adverse effects. Nowadays, the exposure of workers to both physical agents has increased as all productive sectors have evolved towards mechanisation, and so the probability of suffering from these adverse health effects has increased.…”

Section: Introductionmentioning

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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Assessment of Hand-Arm Vibration in Semi-Mechanized Gardening Activities

Cited by 4 publications

References 52 publications

Parameters of finger stalk lifter cut branches in intensive gardens

Parameters of finger stalk lifter cut branches in intensive gardens

Measurement Time in the Evaluation of Whole-Body Vibration: The Case of Mechanized Wood Extraction with Grapple Skidder

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

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