scholarly journals Development of a simulation dump truck dynamics model to estimate loads acting on its carrier and load platform when loading and dumping bulk loads

2022 ◽  
pp. 117-126
Author(s):  
M.V. Zalesov ◽  
V.A. Grigoreva ◽  
V.S. Trubilov ◽  
A.Ya. Boduen
Keyword(s):  
Mathematical Model ◽  
Joint Modeling ◽  
Dump Truck ◽  
Mining Operations ◽  
Durability Analysis ◽  
Dump Trucks ◽  
Bulk Load ◽  
Calculation System ◽  
Dynamics Calculation ◽  
The Cost

It is important for mining dump trucks to minimize the weight of the carrier and the load platform while maintaining a sufficient level of their rigidness and strength. This requirement significantly affects the weight of the transported material, the cost of transportation and, consequently, the economic efficiency of mining operations. Processes of loading and dumping of bulk loads, which is transported by dump trucks, make a significant contribution to reducing the service life of the carrier. Therefore, proper consideration of the bulk load dynamics is an important and relevant task. Contemporary systems for calculating the dynamics of solids allow for joint modeling with applications designed to calculate the dispersed body dynamics. This approach helps to obtain adequate loads in the pivots and force links of the model, to analyze the loading of the load platform, to asses the durability of the dump truck elements, to define the geometry of the load platform. In order to perform the simulation, it is required to develop a mathematical model of a dump truck, including all its key elements and subsystems, a model of the bulk load, and a model of the load platform. The purpose of the study is to develop a mathematical model of a mine dump truck to determine the loads in the pivots and force links connected to the carrier and the load platform for the strength calculations and durability analysis. The calculations are made with the combined use of the solids dynamics calculation system and the application to calculate the dynamics of dispersed bodies.

scholarly journals OPTIMASI TARGET PRODUKSI BERBIAYA ALOKASI PEKERJAAN MINIMUM DENGAN PENDEKATAN PROGRAM LINIER (STUDI KASUS : PT. TASS ENGINEERING)

2019 ◽  
Vol 4 (2) ◽  
pp. 81-93
Author(s):  
Helena Sitorus ◽  
Ratna Suminar ◽  
Arohman Dwi Santoso
Keyword(s):  
Optimum Allocation ◽  
Dump Truck ◽  
Assignment Method ◽  
Maximum Profit ◽  
Dump Trucks ◽  
Research Findings ◽  
Optimum Solution ◽  
The Cost ◽  
A Company ◽  
Production Target

AbstrakPT. TASS Engineering adalah perusahaan yang bergerak di bidang karoseri truk. Perusahaan ini bekerja sama dengan pihak kedua (pemborong) dalam menyelesaikan pekerjaan untuk memenuhi pesanan pelanggan. Diantara produknya, terdapat 4 jenis produk (Dump Truck, Subframe, Tilting, dan Tanki Truck) yang pengerjaannya diserahkan kepada 4 tim  pemborong. Keputusan alokasi pekerjaan dilakukan dengan cara memberikan pekerjaan kepada tim yang sudah menyelesaikan pekerjaan tertentu. Cara alokasi ini ternyata menimbulkan biaya tiap tim dalam mengerjakan satu jenis produk yang sama  cukup bervariasi. Variasi biaya pengerjaan tentu saja berdampak bagi variasi keuntungan. Perlu ditentukan alokasi jenis dan jumlah pekerjaan yang tepat bagi masing-masing tim sehingga mendapatkan keuntungan yang maksimum. Hasil alokasi optimum adalah parameter keputusan kombinasi jumlah produksi tiap produk selain kapasitas tiap tim dan waktu pengerjaan.. Kombinasi jumlah tiap produk ini merupakan target produksi atau target penjualannya. Untuk itu diperlukan penelitian yang bertujuan 1) menentukan alokasi pekerjaan yang optimum, 2) menentukan target produksi tiap produk untuk mendapatkan keuntungan maksimum. Alokasi pekerjaan dilakukan dengan membandingkan metode Penugasan Hungarian dan metode Transportasi untuk memilih total biaya yang paling minimum. Solusi optimum jumlah produk yang diproduksi untuk mencapai keuntungan maksimum dilakukan dengan Program Linier. Hasi temuan penelitian menunjukkan bahwa 1) dump truck dikerjakan sebanyak 88% oleh tim-1 dan 12% oleh tim-4; subframe dikerjakan sebanyak 39% oleh tim-2, 26% oleh tim-3, 35% oleh tim-4; tilting dikerjakan oleh tim-3, dan tanki truk dikerjakan oleh tim-2. Target produksi (target penjualan) untuk mendapatkan keuntungan maksimum adalah dengan memproduksi dump truck 73 unit, subframe 120 unit, tilting 29 unit, dan tanki truk 33 unit. Solusi ini memberikan kenaikan keuntungan sebesar 0.9%.. Kata kunci: optimum, Hungarian, Transportasi, Program Linier AbstractPT. TASS Engineering is a company engaged in the truck body. The company is working with a second party (contractor) in completing jobs to fulfill customer orders. Among its products, there are 4 types of products (Dump Truck, Subframe, Tilting, and Tanki Truck) whose job is submitted to 4 teams of contractors. The decision on job allocation is done by givingit  to the team that have alredy completed their jobs. This allocation method turns out to cost each team to work on the same type of product that is quite varied. Variations in the cost of work, of course, have an impact on variations in profits. It is necessary to determine the allocation of the type and amount of work that is right for each team so as to get the maximum profit. The optimum allocation result is the decision parameter for the combination of the amount of production of each product in addition to the capacity of each team and the processing time. For this reason research is needed which aims to 1) determine the optimum allocation of work, 2) determine the production target of each product to get the maximum profit. The work allocation is done by comparing the Hungarian Assignment method and the Transportation method to choose the minimum total cost. The optimum solution for the number of products produced to achieve maximum profit is done by the Linear Program. The results of the research findings show that 1) dump trucks were handled by 88% by team-1 and 12% by team-4; subframes are done by 39% by team-2, 26% by team-3, 35% by team-4; tilting is done by team-3, and truck tank is done by team-2; 2)the production target (sales target) to get maximum profit is to produce 73 units of dump trucks, 120 units of subframes, 29 units of tilting, and 33 units of tank trucks. This solution provides a profit increase of 0.9%.Keywords: optimum, Hungarian, Transportation, Linier Programming

scholarly journals Increasing life of pit dump truck motor-wheel gearboxes by introducing the monitoring of the actual technical condition

2021 ◽  
Vol 6 (4) ◽  
pp. 267-276
Author(s):  
A. A. Khoreshok ◽  
A. V. Kudrevatykh ◽  
A. S. Ashcheulov ◽  
A. V. Vinidiktov ◽  
L. I. Kantovich
Keyword(s):  
Technical Condition ◽  
Dump Truck ◽  
Mining Equipment ◽  
Quality Performance ◽  
Equipment Operation ◽  
Maintenance Service ◽  
Dump Trucks ◽  
Combination Of Methods ◽  
The Cost ◽  
Physical And Chemical

At present, Kuzbass coal strip mines pay great attention to improving quality performance of mining equipment operation, including reliability and durability of components and units. One of the ways of the performance improvement is decreasing number of unforeseen failures. To achieve this purpose a mine dump truck part diagnostics should be introduced into a maintenance service procedure. At the same time the process of diagnostics should not increase the machinery downtime, but effectively reveal a condition of motor-wheel gearboxes in the course of dump truck operation. The aim of the research is to increase the reliability and service life of motor-wheel gearboxes of large BelAZ dump trucks. Failure of a motor-wheel gearbox is a rare phenomenon, but the cost of a new gearbox can vary from 3.5 to 10 million rubles. That is why it is important to implement such methods of diagnostics, which allow revealing the condition of gearboxes in the shortest possible time and without disassembling corresponding units. Determination of the actual technical condition of motor-wheel gearboxes is possible by different methods: vibroacoustic; acoustic; thermal; physical and chemical analysis of spent operating materials. The studies showed that none of these methods can be used as a universal one. When justifying and selecting the most suitable method, different factors should be considered, including technological, or a combination of methods should be applied, which will reduce risks, but at the same time increase costs. It is necessary to develop a better diagnostic method based on the use of several methods simultaneously.

Digital Transformation of Surface Mining and New Generation of Open-Pit Equipment

2020 ◽  
pp. 10-12
Author(s):  
D.Ya. Vladimirov ◽  
A.F. Klebanov ◽  
I.V. Kuznetsov
Keyword(s):  
Control System ◽  
Surface Mining ◽  
Digital Transformation ◽  
Industrial Safety ◽  
Open Pit ◽  
Dump Truck ◽  
Mining Equipment ◽  
Robotic Control ◽  
Mining Operations ◽  
Dump Trucks

The The paper addresses the issues of designing onboard systems and complex digitalization of open-pit mining equipment. A generalized schematic diagram and composition of the On-Board Robotic Control System for open-pit equipment (OBRCS OPE) are provided. The option of the On-Board Robotic Control System for mining dump trucks (OBRCS MDT) and schematics of the on-board robotic system of the BELAZ dump truck are described in more detail. A layout option is suggested for an autonomous ready dump truck, a modification that meets all the requirements for the digital transformation (DT) generation of dump trucks i.e. the ability to operate as part of the mine fleet management systems and robotic control systems, as well as the availability of modern on-board industrial safety systems and remote diagnostics. The DT Generation of mining equipment will allow mining companies to achieve the up-to-date level in digital transformation of surface mining operations and will cut the amount of investments required in upgrading the mining transport system.

scholarly journals Distribution of Static Normal Reactions to Wheels of Open-Pit Dump Trucks Depending on the Longitudinal and Cross Sections of the Open-Pit Road

2019 ◽  
Vol 105 ◽  
pp. 03009
Author(s):  
Michail Dadonov ◽  
Alexander Kulpin ◽  
Oleg Ostanin ◽  
Erkin Suleimenov
Keyword(s):  
Rock Mass ◽  
Cross Sections ◽  
Normal Load ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Mass Transportation ◽  
Premature Failure ◽  
Dump Trucks ◽  
The Cost

Vehicle costs for rock mass transportation are more than 50% of total costs, among which 25 — 30% are tire costs. The average tire life in mining enterprises is lower than that the value recommended by production plants. The tire life of open-pit dump trucks is more dependent on the normal load on the wheel. The main factor in the change of the normal load is location of the wheel on the dump truck and the open-pit road’s section. Determination of the maximum loaded tire in different operating conditions will allow increasing the tire life and preventing its premature failure. The TKPH index (tire performance) recommended by tire manufacturers does not take into account the diversity of mining conditions and variations of sections of open-pit roads on different routes. The average load per trip is defined as movement of a loaded open-pit truck and an empty open-pit truck on a straight reach of a road. The proposed method for recording of redistribution of the load on the wheel allows making adjustments to recording of TKPH indexes and thereby effectively managing the tire life, which in turn will make it possible to more fully use the tire life, increase its reliability and reduce the cost of rock mass transportation.

scholarly journals Reducing The Operational Stop Time of Hauller Komatsu Hd465-7 by Using the Six Sigma’s Approach in PT X

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Humiras Hardi Purba
Keyword(s):  
Six Sigma ◽  
Dump Truck ◽  
Heavy Equipment ◽  
Stop Time ◽  
Driving Speed ◽  
Plan Selection ◽  
Dump Trucks ◽  
Standardization Process ◽  
The Cost ◽  
And Control

An operational stop time is a condition where heavy equipment is not working as usual. It is important to avoid this condition since excessive idling wastes an enormous amount of fuel and money. However, the operational stop time of a dump truck Hauller HD465-7 is 2.83 minutes, which is far above the normal standard. This project aims to optimize the improvement of an operational stop time by using a Six Sigma method with optimize plan selection. This will return the operational stop time to the standard range within 1.25 to 1.65 minutes. These steps of define, measure, analyze, improve, and control are applied to the standardization process according to the rules and criteria established by the Six Sigma. The result found that the Six Sigma’s approach which was applied in PT X has reduced the cost from US$1,105,300 to US$963,000 every month. An improvement have been made to matching fleet by combining six fleet of dump trucks at driving speed of 22 km per hour and the average simulated haul distance was 2,000 meters.

scholarly journals Improving design and application method of screening bucket excavators

2021 ◽  
Vol 44 (1) ◽  
pp. 56-62
Author(s):  
A. Yu. Cheban
Keyword(s):  
The Body ◽  
Dump Truck ◽  
Technological Solution ◽  
Mining Operations ◽  
Unit Costs ◽  
Hydraulic Cylinders ◽  
Dump Trucks ◽  
Material Separation ◽  
Operation Cycle ◽  
Promising Development

The purpose of the study is to increase the productivity and economic efficiency of mining operations using screening bucket excavators on the basis of the introduction of a new technical and technological solution that expands equipment functionality. The study involves the analysis of known designs of screening buckets installed on excavators that ensure material separation to be carried out simultaneously with excavation and loading works. It is noted that a promising development direction of screening buckets is a design with working drums. The article presents an excavator with a modernized screening bucket and its operation technology, which allows to start rock mass sorting in the bucket while the excavator is turning to the place of unloading. The improved screening bucket is equipped with a hinged movable bottom controlled by hydraulic cylinders to accumulate fine fractions screened through the working drums. Fine fractions accumulated in the moving bottom are unloaded into a dump truck, after which screening continues directly into the body of the dump truck. Screening finished, the movable bottom closes and the excavator unloads the coarse fractions remaining in the bucket into another vehicle. Unloading is carried out by bucket turning. The combination of screening and excavator turning reduces the operation cycle time, which increases the performance of both the excavator and dump trucks. The use of a modernized screening bucket with a moving bottom eliminates the loss of valuable fine material as a result of spilling when the excavator turns for unloading. The movable bottom can be installed on the screening buckets of known designs and does not require their significant alteration. Application of the proposed technical and technological solution will reduce unit costs and increase the efficiency of work.

scholarly journals Energy Assessment of BelAZ-75131 Gas-diesel Mining Dump Trucks Operation at Kuzbass Open Casts

2020 ◽  
Vol 174 ◽  
pp. 03010
Author(s):  
Ilya Kuznetsov ◽  
Ivan Panachev ◽  
Georgiy Dubov ◽  
Sergey Nokhrin
Keyword(s):  
Natural Gas ◽  
Diesel Fuel ◽  
Liquefied Natural Gas ◽  
Dump Truck ◽  
Energy Estimation ◽  
Gaseous Fuels ◽  
Energy Assessment ◽  
Dump Trucks ◽  
Gas Consumption ◽  
The Cost

The parameters of the BelAZ-75131 heavy dump truck im- proved model using gas-diesel mixture are given in the paper. The moni- toring analysis of the conditions and operation indicators of BelAZ-75131 heavy dump truck using diesel and gaseous fuels is done. Numerical and percentage values of the replacement of diesel fuel with liquefied natural gas when transporting exploded rock mass are determined; the volume of diesel fuel and liquefied natural gas consumption has been established. The analytical dependence to calculate the cost per unit of energy during trans- portation by mining dump trucks with gas equipment is determined. The energy estimation of diesel and gas-diesel mining dump trucks operation is given.

Modernization of Water Treatment System at Agricultural Enterprises Due to Introduction of Solar Energy

2020 ◽  
Vol 67 (1) ◽  
pp. 142-147
Author(s):  
Alina A. Aleksandrova ◽  
Maksim S. Zhuzhin ◽  
Yuliya M. Dulepova
Keyword(s):  
Mathematical Model ◽  
Water Treatment ◽  
Solar Energy ◽  
Energy Saving ◽  
Electric Energy ◽  
Solar Water Heater ◽  
Water Heater ◽  
Agricultural Enterprises ◽  
Solar Water ◽  
The Cost

Energy saving today is an integral part of the development strategy of agricultural organizations. Considerable attention is paid to the modernization and automation of technological processes in agricultural enterprises, which can improve the quality of work and reduce the cost of production. The direction of modernization is to reduce the consumption of electric energy by improving the water treatment system in livestock complexes. (Research purpose) The research purpose is to determine the potential of solar energy used in the Nizhny Novgorod region and to determine the possibility of its use for water heating in livestock complexes and to consider the cost-effectiveness of using a device to heat water through solar energy. (Materials and methods) Authors used an improved algorithm of Pixer and Laszlo, applied in the NASA project «Surface meteorology and Energy», which allows to calculate the optimal angle of inclination of the device for heating water. (Results and discussion) Designed a mock-up of a livestock complex with a solar water heater installed on the roof, protected by patent for invention No. 2672656. A mathematical model was designed experimentally to predict the results of the plant operation in non-described modes. (Conclusions) The article reveales the optimal capacity of the circulation pump. Authors have created a mathematical model of the device that allows to predict the water heating in a certain period of time. The article presents the calculations on the energy and economic efficiency of using a solar water heater. An electric energy saving of about 30 percent, in the economic equivalent of 35 percent.

scholarly journals An Optimized Mathematical Model for Items Supplies Planning of a Logistic System

2016 ◽  
Vol 10 (10) ◽  
pp. 133
Author(s):  
Mohammad Ali Nasiri Khalili ◽  
Mostafa Kafaei Razavi ◽  
Morteza Kafaee Razavi
Keyword(s):  
Mathematical Model ◽  
Mixed Integer ◽  
Logistics System ◽  
Proposed Model ◽  
Multiple Objective Decision Making ◽  
System Requirements ◽  
Purchasing Logistics ◽  
The Cost ◽  
The Mathematical Model ◽  
First Time

Items supplies planning of a logistic system is one of the major issue in operations research. In this article the aim is to determine how much of each item per month from each supplier logistics system requirements must be provided. To do this, a novel multi objective mixed integer programming mathematical model is offered for the first time. Since in logistics system, delivery on time is very important, the first objective is minimization of time in delivery on time costs (including lack and maintenance costs) and the cost of purchasing logistics system. The second objective function is minimization of the transportation supplier costs. Solving the mathematical model shows how to use the Multiple Objective Decision Making (MODM) can provide the ensuring policy and transportation logistics needed items. This model is solved with CPLEX and computational results show the effectiveness of the proposed model.

Influence of inter-organizational relations on methods of calculating the cost of production of agricultural organizations

2020 ◽  
pp. 13-20 ◽  
Author(s):  
Anastasiya Alekseevna Romanova
Keyword(s):  
Theoretical Analysis ◽  
Cost Calculation ◽  
Interorganizational Cooperation ◽  
Organizational Relations ◽  
Interorganizational Management ◽  
Calculation System ◽  
Analytical System ◽  
Definition Of ◽  
The Cost ◽  
Organizational Cooperation

The author’s definition of inter-organizational cooperation, interorganizational management accounting and inter-organizational accounting and analytical system and cost calculation system in the framework of inter-organizational relations is given in the article on the basis of theoretical analysis. The features of calculating the cost of interorganizational cooperation are defined, new accounting practices are described, the advantages of implementing this type of accounting are identified, and possible problem areas are identified.

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