Vibration and noise characteristics of flap type olive harvesters

Çakmak, Bülent; Saraçoğlu, Türker; Alayunt, Fazilet N.; Özarslan, Cengiz

doi:10.1016/j.apergo.2010.08.015

Cited by 33 publications

(11 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vibration exposure is the major physical risk resulting from the use of electrical portable harvesters. Noise risk has been greatly reduced due to the use of electric motors [10] As it might be expected, the frequency of the first harmonic was around 18 Hz for all the harvester heads. In fact, all the machines were driven by the same engine model, the kinematics of the initial part of the motion transmission system was the same, as well as the reduction ratio.…”

Section: Discussionmentioning

confidence: 77%

Vibration from Electric Hand-Held Harvesters for Olives

Cerruto

Manetto

2022

Applied Sciences

View full text Add to dashboard Cite

Olive harvesting is the most expensive cultivation operation in areas where full mechanization is not possible due to structural conditions such as low tree density, old trees, irregular spacing, and terraced fields, which are very frequent in many small Italian farms. Under these conditions the use of hand-held vibrating harvesters is quite wide spread, because they are capable of approximately three times the productivity of workers using manual harvesting methods. Unfortunately, the use of these machines exposes the operators to hand-arm vibration risk and acceleration values are affected by several factors, including harvester kinematics, rod material and geometry, and load conditions. In this study several models of electrical portable harvesters, obtained by combining six harvester heads and four rods (one telescopic), were tested under idling and load conditions, measuring acceleration values on the rod, near the hand positions. Assuming the use of the machinery for 4 h per day, the result is a level of daily vibration exposure A(8) for the most exposed hand ranging from about 11 to 40 m/s2, much higher than the daily exposure limit value of 5 m/s2 stated by the European Directive 2002/44/EC. With the same harvester head, reduction in vibration may be achieved by using carbon fiber rods rather than aluminum ones or by increasing the rod diameter. The most significant reduction is achievable by designing harvester heads whose kinematics inherently incorporate oscillation compensation.

show abstract

Section: Discussionmentioning

confidence: 77%

Vibration from Electric Hand-Held Harvesters for Olives

Cerruto

Manetto

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…In the Brazilian agriculture, scientific studies dealing with hand and arm vibration levels (HAV) in workers operating portable mechanical equipment are scarce. However, several studies carried out in other countries have demonstrated the importance of this issue given its relevance to the protection of workers' health (ÇAKMAK et al, 2011;HAO;EAN;RIPIN, 2011;AIELLO et al, 2012;WÓJCIK, 2015;AZMIR;YAHYA, 2017;ROMANO et al, 2017;BERNADI et al, 2018;CALVO et al, 2018). Heaver et al (2011) stated that the early recognition of exposure to vibration is of fundamental importance to promote risk management and prevent the occurrence of health damage of exposed workers.…”

Section: Methodsmentioning

confidence: 99%

Occupational Exposure to Localized Vibrations Using Portable Mechanical Brush Cutter in Coffee Crop

Júnior

Silva

Cunha

et al. 2019

C.Sci.

View full text Add to dashboard Cite

The use of portable brush cutter may expose workers to localized vibrations, from the transfer of mechanical vibration of the tool to the operator’s hands and arms. With this in mind, the objective in this study was to quantify the levels of occupational vibration transmitted to the hands and arms of the portable brush cutter operators under routine working conditions in the coffee crop. The vibration levels transmitted to the operator’s hands were measured during activity with portable brush cutters. The experimental design was completely randomized (CRD) in a factorial scheme (2 x 2) combined with two types of grip (Circular cable (CC) and double grip handle (DGH) with two types of tip cutting blades (2TB and 3TB). The data acquisition occurred from the use of the vibration meter SV 103, SVANTEK with triaxial accelerometer, installed on each of the worker’s hand at the contact point with the tool. The results demonstrated that the 2.5 ms-2 action level determined by NR 09 and NHO 10 was exceeded under all conditions of the present study. The highest accelerations were quantified in the operation of the brush cutter equipment with CC, reaching the daily exposure limit of 5 ms-2 allowed for an 8-hour of working day. The resulting acceleration of the DGH equipment was on average 37.45% lower than the operation with the CC equipment. The results bring indicatives of occupational advantages in the selection of these types of accessories for brush cutters, in order to mitigate the effects of exposure to HAV in extended use situations

show abstract

“…Various studies have also been carried out to determine the noise levels (range from 56-90 dBA, Leq) caused by various self-propelled and hand-held machines. The examples include wine and cereal growing (Franzinelli et al, 1988), hand-held olive harvesters (Saraçoğlu, 2001), motor scythes (Çakmak and Alayunt, 2009;Çakmak et al, 2011), combine harvesters (Sümer et al, 2006;Jahanbakhshi et al, 2016), grain dryers (Reinvee et al, 2013), hazelnut harvester (Sauk and Beyhan, 2016), and grass cutting machine (Calvo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…There are two studies on noise formation in olive harvest, and only hand-held electric machines (hook and flap types) were examined in the previous studies (Saraçoğlu, 2001;Çakmak et al, 2011). No study has been found on the noise level and effects of internal combustion engine driven machines, widely used in olive harvesting.…”

Section: Introductionmentioning

confidence: 99%

Noise Exposure in Olive Harvest Mechanization

Özkul

Sümer

2022

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

View full text Add to dashboard Cite

The purpose of this study was to determine the daily noise exposure levels in olive harvesting and to evaluate its effects on employees' health. The sound pressure levels (dBA) at the ear level of the employees were measured during olive harvest operations performed by hand-held, self-propelled and tractor-driven machines. It was determined that equivalent sound pressure levels and daily personal noise exposure levels at the operator ear level were in the range of 74-88 dBA and 66-82 dBA, respectively. These values for other employees ranged from 71 to 81 dBA and 65 to 75 dBA. It was determined that the hand-held and tractor driven machines driven by internal combustion engines had higher noise parameters compared to other machines, and the lower exposure action value was exceeded in these machines. The study showed that the health and work efficiency of the employees could be adversely affected, due to prolonged exposure during olive harvest activities.

show abstract

Vibration and noise characteristics of flap type olive harvesters

Cited by 33 publications

References 5 publications

Vibration from Electric Hand-Held Harvesters for Olives

Vibration from Electric Hand-Held Harvesters for Olives

Occupational Exposure to Localized Vibrations Using Portable Mechanical Brush Cutter in Coffee Crop

Noise Exposure in Olive Harvest Mechanization

Contact Info

Product

Resources

About