Research and Application of Protective Device for Belt Conveyor

Kebutuhan manusia semakin lama semakin meningkat, berkembang dan bervariasi, untuk memenuhi kebutuhan tersebut industri membutuhkan suatu alat yang dapat mengontrol dan mengendalikan proses permesinan secara otomatis. Diantaranya industri yang memerlukan pengendalian kualitas secara otomatis adalah industri makanan dan minuman instan. Di Indonesia, industri minuman didominasi oleh hasil olahan minuman instan bubuk dan cair. Salah satunya minuman instan kopi, minuman kopi membutuhkan beberapa tahap pengolahan, salah satu yang terpenting adalah proses pemutuan biji kopi. Saat ini industri masih menggunakan tenaga konvensional yang memakan waktu, biaya, tenaga operator. Penentuan mutu dengan cara seperti ini mempunyai kelemahan dari sisi subyektivitas yang memungkinkan terjadinya kesalahan akibat kelelahan mata manusia terhadap contoh yang dianalisis. Untuk menanggulangi masalah tersebut perlu adanya mesin pemutuan biji kopi dengan sistem otomasi berdasarkan parameter besar dan kecilnya biji kopi. Dengan cara menghitung banyaknya biji kopi pada sampel 300 gram biji kopi. Penyelesaian rancang bangun ini dilakukan dengan 2 tahapan yaitu perancangan konveyor sabuk dan perancangan otomasi. Perancangan konveyor sabuk pemilah terdiri dari pemilihan konsep, desain rinci menggunakan aplikasi Solidwork dan proses pembuatan berdasarkan desain. Selanjutnya, perancangan otomasi menggunakan mikrokontroller Arduino Uno, sensor load cell dan sensor FC-51. Setelah peralatan sudah dipasang semua selanjutnya dilakukan pengujian didapatkan dari 300 gram biji kopi terhitung jumlah biji kopi yang bervariasi yaitu 907, 954, 976, 1007, dan 1036 biji kopi. Kemudian, ketinggian sensor yang optimal 6 cm dari permukaan belt conveyor dan kecepatan conveyor 1,52 m/menit agar pembacaan sensor FC-51 akurat.

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Justification of design parameters of the fractional reaping conveyor and its devices for removal of beveled stems from under the wheels of the vehicle

Agricultural Technologies ◽

10.35599/agritech/01.03.01 ◽

2019 ◽

Vol 1 (3) ◽

pp. 1-10

Author(s):

Mikhail M. Konstantinov ◽

Ivan N. Glushkov ◽

Sergey S. Pashinin ◽

Igor I. Ognev ◽

Tatyana V. Bedych

Keyword(s):

Optimal Design ◽

Technological Process ◽

Design Parameters ◽

Theoretical Studies ◽

Optimal Parameters ◽

Belt Conveyor ◽

Grain Crops ◽

Mode Of Operation ◽

Optimal Values ◽

Main Component

In this paper we consider the structural and technological process of the combine used in the process of separate harvesting of grain crops, as well as a number of its parameters. Among the main units of the combine, we allocate a conveyor and devices for removing beveled stems from under the wheels of the vehicle. The principle of operation of the conveyor at different phases of the Reaper and especially the removal of cut stems from under the wheels of the vehicle during operation of the Reaper. The results of theoretical studies on the establishment of the optimal design of the parameters of the belt conveyor are presented, the ranges of their optimal values are considered and determined. Studies on the establishment of optimal parameters of the screw divider in the Reaper, which is the main component of the device for removal of beveled stems, are presented. Taking into account the optimal design and mode of operation of the screw divider, the correct work is provided to remove the cut stems from under the wheels of the harvester.

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Study on the Residual Current Protection Device Technology

The Open Electrical & Electronic Engineering Journal ◽

10.2174/1874129001408010404 ◽

2014 ◽

Vol 8 (1) ◽

pp. 404-411 ◽

Cited By ~ 1

Author(s):

Guo Rongyan ◽

Zhang Honghui

Keyword(s):

Distribution System ◽

Low Voltage ◽

Residual Current ◽

Electrical Safety ◽

Protective Device ◽

Protection Device ◽

Voltage Distribution ◽

The People ◽

Safety Protection ◽

Device Technology

As an important electrical safety protection device in low voltage distribution system, residual current protection device is to protect the insulation line leakage fault; the electric shock of the people plays an important role in fault. From the protection characteristics of residual current protective device to points, those can be divided into, residual current protection device for residual pulsating direct current and residual dc, according to the residual sinusoidal alternating current.

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Research of Fault Diagnosis of Belt Conveyor Based on Fuzzy Neural Network

The Open Mechanical Engineering Journal ◽

10.2174/1874155x01408010916 ◽

2014 ◽

Vol 8 (1) ◽

pp. 916-921

Author(s):

Yuan Yuan ◽

Wenjun Meng ◽

Xiaoxia Sun

Keyword(s):

Neural Network ◽

Fault Diagnosis ◽

Bp Neural Network ◽

Fault Location ◽

Fuzzy Neural Network ◽

Fuzzy Theory ◽

Belt Conveyor ◽

Fuzzy Neural ◽

Neural Network Algorithm ◽

Network Fault

To address deficiencies in the process of fault diagnosis of belt conveyor, this study uses a BP neural network algorithm combined with fuzzy theory to provide an intelligent fault diagnosis method for belt conveyor and to establish a BP neural network fault diagnosis model with a predictive function. Matlab is used to simulate the fuzzy BP neural network fault diagnosis of the belt conveyor. Results show that the fuzzy neural network can filter out unnecessary information; save time and space; and improve the fault diagnosis recognition, classification, and fault location capabilities of belt conveyor. The proposed model has high practical value for engineering.

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Technical efficiency of pesticide application on tomato, chinese cabbage and cauliflower in simpang empat sub-district Karo Regency

E3S Web of Conferences ◽

10.1051/e3sconf/20185200045 ◽

2018 ◽

Vol 52 ◽

pp. 00045

Author(s):

Sri Fajar Ayu ◽

Destanul Aulia

Keyword(s):

Technical Efficiency ◽

Chinese Cabbage ◽

Quantitative Method ◽

Protective Device ◽

Test Results ◽

Pesticide Application ◽

Vegetable Farmers ◽

The Right ◽

North Sumatra ◽

Mild Toxicity

Prior research by authors on the use of pesticides and their impact on 75 vegetable farmers in Simpang Empat subdistrict, Karo district, North Sumatra showed that 60% of respondents applied pesticides in excess of the packaging instructions. Respondents were also found not to use a complete protective device. Almost 70% of respondents have mild toxicity complaints, and based on blood cholinesterase levels are also found most respondents have mild toxicity. Pesticide residue test results also found 0.728 residues of chlorpyrifos and 0.321 profenofos in vegetables produced in this area. This led to continued review by checking the technical efficiency in the use of pesticides. The method used is a quantitative method with the Data Envelope Analysis (DEA) approach to analyze technical efficiency of pesticide on each commodity. The population is the whole vegetable farmer who grew tomatoes, Chinese cabbage and cauliflower at the time of the study. The entire population is used to be a sample of 35 tomato and cauliflower farmers and 20 Chinese cabbage farmers. The results of the study indicate that the uses of pesticide as production inputs on tomato commodities, Chinese cabbage and cauliflower are not technically efficient. It is suggested to farmers to use pesticide input according to the rules, proper dosage, on target, on time, the right way so that pesticide used is technically efficient.

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An innovative design of a protective device for integrity of tank wagons in a collision

Transportation Research Procedia ◽

10.1016/j.trpro.2021.07.044 ◽

2021 ◽

Vol 55 ◽

pp. 767-773

Author(s):

Kateryna Kravchenko ◽

Pavol Šťastniak ◽

Marián Moravčík ◽

Ján Dižo ◽

Miroslav Blatnický

Keyword(s):

Protective Device ◽

Innovative Design

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Reliability modeling for multi-state systems with a protective device considering multiple triggering mechanism

Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability ◽

10.1177/1748006x211013325 ◽

2021 ◽

pp. 1748006X2110133

Author(s):

Xian Zhao ◽

Rong Li ◽

Yu Fan ◽

Qingan Qiu

Keyword(s):

Failure Modes ◽

Operating Time ◽

Replacement Policy ◽

Economic Losses ◽

Residual Lifetime ◽

Cumulative Number ◽

Protective Device ◽

Triggering Mechanism ◽

Safety Critical ◽

Markov Chain Imbedding

Failures of safety-critical systems may result in irretrievable economic losses and significant safety hazards, thus enhancing the reliability of safety-critical system is crucial. As applied widely in engineering fields, protective devices are commonly equipped for the systems operating in shock environment to reduce external damage, which has not been taken into consideration in existing literatures. This paper investigates the reliability of multi-state systems with competing failure patterns supported by a protective device. According to the system failure modes, state-based and shock number-based triggering mechanism of the protective device are developed. That is, the protective device is triggered once the system state or cumulative number of shocks exceeds corresponding critical thresholds respectively. After being triggered, the protective device can reduce the probability of damaging shocks for the system. The protective device fails when the number of consecutive valid shocks reaches a threshold. Based on the constructed model, a finite Markov chain imbedding approach is employed to derive reliability indices including distribution functions of system lifetime and residual lifetime, together with expected operating time of the protective device. Moreover, two age-based replacement policies together with a condition-based replacement policy are developed to accommodate different maintenance scenarios and corresponding optimal solutions are acquired. Numerical illustrations based on the application of cooling systems in engines are presented to validate the results.

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