Experimental verification of the regulated vibration on the subsoil

Kašpárek, Jaroslav; Škopán, Miroslav

doi:10.21595/vp.2017.19061

Cited by 3 publications

(2 citation statements)

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“…Timber logging can be defined as transposition of logs form a place of harvesting to a place of timber processing or timber transportation. Ground yarding is most often used for slopes up to 40 %, but some logging tractors are able to work on slopes even up to 50 % [1][2][3][4]. DOI:10.22616/ERDev.2020.19.TF058…”

Section: Fig 1 Three-dimensional Model Of the Solved Tractormentioning

confidence: 99%

Design of pedestal for mounting of hydraulic grapple on skidder

Dižo

Blatnický

Fidrik

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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Skidders represent an important part of the forestry. They allow to perform timber harvesting in difficult conditions of forests in an effective way. In the Slovak republic, only one company currently produces several types of articulated steering skidders differing by the dimensions, operating weight, engine power etc., which are well-known and used in the region of central and Eastern Europe for many years. These products are exposed to the strong competition from other world producers. In comparison with earlier technical solution of skidders, which have used winches for pulling trees to a landing, skidders are recently most often equipped with a hydraulic grapple, which is controlled by an operator directly from a skidder cabin. Thus, the operator has not to get off the cabin in order to drag the cable to the logs and hook them up. Hence, the hydraulic grapple improves the user comfort of a skidder, mainly in bad weather conditions. Therefore, every skidder is currently required to allow mounting the hydraulic grapple. The content of this article is focused on presentation of the design of a pedestal, which is intended to be mounted on an articulated steering skidder. The pedestal is the structural unit of the smallest type of the skidders produced in the Slovak Republic. The designed pedestal will be mounted in the rear part of the skidder. Winches are located under it. Therefore, the pedestal has to be clapper for better access to winches during maintenance and repair processes. As the pedestal will be loaded by various types of loads resulting from its fundamentals in the real operating conditions, its structure has to be designed precisely. The article contains a CAD model of the pedestal. Based on the calculated forces, which will act on it during a real operation, strength analyses are carried out.

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Section: Fig 1 Three-dimensional Model Of the Solved Tractormentioning

confidence: 99%

Design of pedestal for mounting of hydraulic grapple on skidder

Dižo

Blatnický

Fidrik

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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“…The advantages of this technology include speed and low cost [1]. However, this is a complicated process, and in order to achieve the best compaction results, the design of the compaction rollers is still in development [2][3][4][5]. One of the negative effects of this technology is the generated vibration that is transmitted to the surrounding rock environment [6,7].…”

Section: Introductionmentioning

confidence: 99%

Alternative Approaches to Measurement of Ground Vibrations Due to the Vibratory Roller: A Pilot Study

Nedoma

Stolárik

Kepák

et al. 2019

Sensors

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At present, one of the primary tasks of the construction industry is to build transport infrastructure. This concerns both the construction of new bypasses of towns and the repair of existing roads, which are damaged by congestion, especially by freight transport. Whether it is a new building or a reconstruction, it is always very important to choose a suitable method of subsoil treatment. One of the most commonly used methods for soil treatment is currently compaction using vibratory rollers. This method is very effective both in terms of results and due to its low financial demands compared to other methods. Vibration is transmitted to the surrounding rock environment when compacting the subsoil using vibratory rollers. Although the intensity of these vibrations is not as pronounced as in other methods of subsoil treatment, such vibrations can have a significant effect, for example during compaction in urban areas or in an area with the presence of historical objects. Therefore, it is very advisable to monitor the effect of these vibrations on the environment during construction. This paper brings an original experimental comparative study of standard seismic instrumentation with a developed interferometric sensor for the field of monitoring vibrations generated during compaction of subsoil using vibrating rollers. The paper presents time and frequency domain results, as well as attenuation curves, which represent real attenuation of vibrations in a given rock environment. The results presented here show that a system operating on a different physical principle from the one used at present has the potential to replace the existing, very expensive, seismic equipment.

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Digital signal processing in studying the vertical accelerations of the vibratory roller frame

Tyuremnov¹,

Krayushkin²

2022

AIP Conference Proceedings

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Experimental verification of the regulated vibration on the subsoil

Cited by 3 publications

References 1 publication

Design of pedestal for mounting of hydraulic grapple on skidder

Design of pedestal for mounting of hydraulic grapple on skidder

Alternative Approaches to Measurement of Ground Vibrations Due to the Vibratory Roller: A Pilot Study

Digital signal processing in studying the vertical accelerations of the vibratory roller frame

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