Actions to increase the reliability of the chain transmissions

Ghimişi, Ştefan; Nicula, Dana

doi:10.1051/matecconf/201817806002

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…The previous work referred to the tree diagram to design the chain drive system, which can improve the reliability of the chain [ 33 ]. The friction chain rig is used at the Transylvania University of Brasov in order to increase the tensioning force and keep the force pushing on the guide [ 34 ].…”

Section: Principle Of the Designmentioning

confidence: 99%

Design and Implementation of a Chain-Type Direct Push Drilling Rig for Contaminated Sites

Sun

Zhou

Cao

et al. 2023

IJERPH

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For sites where volatile organic compounds are present, the direct push method, in combination with other sensors for investigation, is a powerful method. The investigation process is an integrated drilling and sensing process, but the trajectory of the probe carrying the sensor is ambiguous. This paper explores and introduces the application of a chain-type direct push drilling rig by designing and building a chain-type direct push miniature drilling rig. This rig allows for indoor experimental studies of direct push trajectories. The chain-type direct push drilling model is proposed based on the mechanism of chain transmission. The drilling rig provides a steady direct thrust through the chain, which is driven by a hydraulic motor. In addition, the drilling tests and results described prove that the chain could be applied to direct push drilling. The chain-type direct push drilling rig can drill to a depth of 1940 mm in single-pass and up to 20,000 mm in multiple passes. The test results also indicate that it drills a total length of 462.461 mm and stops after 87.545 s of operation. The machine can provide a drilling angle of 0–90° and keep the borehole angle fluctuating within 0.6° with the characteristics of strong adjustability, flexibility, continuity, stability, and low disturbance, which is of great value and significance for studying the drilling trajectory of direct push tools and obtaining more accurate investigation data.

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Section: Principle Of the Designmentioning

confidence: 99%

Design and Implementation of a Chain-Type Direct Push Drilling Rig for Contaminated Sites

Sun

Zhou

Cao

et al. 2023

IJERPH

View full text Add to dashboard Cite

show abstract

“…In this case, input and output sprockets have the same diameters, but different number of teeth and thus different pitch of teeth. The difference in number of teeth should be only one tooth, which significantly affects the shape of the teeth of one of the sprocket and thus its loadability [7,8,11]. Transmission ratio for this sprockets arrangement can be also calculated in the same way [11]:…”

Section: Fig3 Characteristic Solution Of Coaxial Triplex Chain Tranmentioning

confidence: 99%

“…Shaft center distances are relatively unrestricted. Whereas gear drive center-to-center distances are restricted to specific dimensions for a given set of gears, the center distances between two chained sprockets can vary anywhere from 50% to 300% or more of their pitch diameters [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Possible Concept Solutions of Chain Drives

et al. 2019

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Possible concept solutions of chain drives are analysed in this paper in order to point out the benefits of chain drive application and, in particular, the possibility of application of multi-level chain drive. The paper also analyses the possibility of replacing the gear drives with chain drives, which, in the case of short-term drive and using the same direction of rotation, enables a slightly simpler drive solution. The paper doesn’t consider difference between the roller and gear chains application because these two types of chains can be used very successfully. Also, the possibility of using timing belt drive is not considered, but it can be also used very successfully in this type of drive, but only as a transmission of motion.

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Study to increase the quality of the scientific research process

Ghimişi

Nicula

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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At present, increasing attention is paid to the quality of products and processes in different fields of activity. Currently, universities and other institutions with research activities scientifically, are increasingly concerned with the implementation of quality management through different one’s methods and tools. Quality Management provides a range of tools that can be used to find solutions when it comes to improving quality. In this paper the authors present a study on the tree diagram determination, for quality improvement the scientific research process. The important measures to be taken have been identified for the successful completion of a scientific research process. To increase the quality of the scientific research process, has grouped the identified measures and thus leads to an orientation to three specific objectives: the organization’s management adequately assures the necessary resources; the head of the research collective adequately organizes the research activity; the research collective chooses and applies an adequate research methodology on the theme. A measure from the third specific objective is considered to be a secondary objective, and for it specific actions are provided which constitute level 4 of the tree diagram. A diagram has been developed that includes: the general objective, the specific objectives, the measures identified for the achievement of the objects. The paper presents a tree diagram that can be used in the quality management within the frame of the organizations which desire to improve the quality of the scientific research activities. The use of this diagram offers the advantage to examine in a chronological and logical sense the causes which determine the quality of a scientific research process

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Actions to increase the reliability of the chain transmissions

Cited by 5 publications

References 8 publications

Design and Implementation of a Chain-Type Direct Push Drilling Rig for Contaminated Sites

Design and Implementation of a Chain-Type Direct Push Drilling Rig for Contaminated Sites

Analysis of Possible Concept Solutions of Chain Drives

Study to increase the quality of the scientific research process

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