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.

Experimental testing of open pit dump trucks in operating conditions

2020 ◽  
pp. 530-542
Author(s):  
A. G. Zhuravlev ◽  
M. V. Isakov
Keyword(s):  
Power Plants ◽  
Experimental Testing ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Experimental Measurements ◽  
Complex Data ◽  
Special Unit ◽  
Operating Modes ◽  
Dump Trucks

The high importance of optimizing the operation of quarry transport is confirmed by the leading share of its costs in the total cost of mining. The current direction of optimization is the development and implementation of digital technologies for processing complex data on the parameters of transport vehicles. The solution of the above issues should be based on the results of scientific research on the collection and processing of information. Developed a set of techniques to perform experimental measurements of working parameters of mining dump trucks as part of a special unit experiments, and long monitoring measurements. A set of equipment for performing experimental measurements, as well as its installation on a dump truck is presented. The data of experimental measurements and a methodical approach to their analysis are presented. In particular, it shows the identification of operating modes of the power plant and the construction of the load diagram, the identification of elements of the transport cycle, etc. The approach to substantiation of innovative designs of power plants adapted to the conditions of a particular quarry is shown on the example of calculated schedules of energy consumption and reserve of recovery of braking energy. The proposed hardware-methodical complex is a research model for the development of methods for automated data collection and processing in the formation of elements of digital mining production.

scholarly journals Effect of aerodynamic loads on redistribution of normal reactions of quarry dump trucks tires

2020 ◽  
Vol 174 ◽  
pp. 03018
Author(s):  
Mikhail Dadonov ◽  
Alexander Kulpin ◽  
Valery Borovtsov ◽  
Anar Zhunusbekova
Keyword(s):  
Normal Load ◽  
Operating Conditions ◽  
Dump Truck ◽  
Early Failure ◽  
Aerodynamic Loads ◽  
Truck Tires ◽  
Dump Trucks ◽  
And Control ◽  
Mine Dump

Tires of quarry dump trucks occupy one of the leading places in the item of costs for motor transport, as they are expensive product and at the same time more than half of them do not generate their resource. The causes of premature tires failure are exceeding normal load on them. In turn, the aerodynamic forces effect on the quarry dump truck as one of the influencing factors, is the dynamic redistribution of normal loads on tires and, as a result, affects temperature modes. The determination of the load on the tire under different operating conditions will increase the service life of the tires and avoid early failure. The proposed calculation method of aerodynamic loads and their influence on redistribution of normal mine dump truck tires reactions in dynamics allows to make correction to load modes and control the tires resource, which will lead to more complete use of tires resource.

scholarly journals Energy method of assessing and systematizing open pit automobile transport operating conditions

2020 ◽  
Vol 1 (8) ◽  
pp. 14-25
Author(s):  
Iurii Lel ◽  
◽  
Igor Glebov ◽  
Olga Musikhina ◽  
Ruslan Ganiev ◽  
...  
Keyword(s):  
Rock Mass ◽  
Power Consumption ◽  
Operating Conditions ◽  
Open Pit ◽  
Horizontal Distance ◽  
Actual Length ◽  
Operation Conditions ◽  
Regulatory Standards ◽  
Wheel Drive ◽  
Dump Trucks

Research aim is to develop the method of assessing and systematizing open pit automobile transport operating conditions. Research relevance. Pit depth growth and the introduction of modern models of dump trucks capable of working on 18–24% slopes complicate the conditions of industrial vehicles operation. In this regard, the development of the method and indicators of rock mass transportation difficulty becomes relevant as well as the systematization of vehicles operation conditions. Research methodology. The method of evaluating the difficulty of transportation is based on calculating diesel consumption per one haul cycle and reducing the actual length of the route to the relative horizontal distance with the use of rock mass vertical haul horizontal equivalents. Experimental and analytical dependences for horizontal equivalents have been determined. As a criterion of transportation difficulty evaluation, the use of operation conditions difficulty coefficient has been substantiated showing how many times truck’s power consumption when moving along the real route is higher than power consumption when moving along the horizontal macadamized route of the same length. Results. As a result of the research, the method of assessing and systematizing the operation conditions of open pit automobile transport. It has been determined that maximum values for conditions difficulty ISSN 0536-1028 «Известия вузов. Горный журнал», № 8, 2020 25 coefficients for the trucks with 4 × 2 wheel configuration are 2.6–3.0, and for all-wheel drive trucks – 5.0–6.5. By the difficulty coefficient, all operating conditions are divided into 5 classes (relatively easy, medium, difficult, very difficult, and extremely difficult). It has been determined that operating conditions in the most of diamond-mining open pits of ALROSA PJSC refer to class 3 and 4 (difficult and very difficult). The introduction of the all-wheel drive trucks will go along with the transition of operating conditions to class 5 (extremely difficult). For most of Ural pits classes 2 and 3 are typical (medium and difficult). Scope of results. Research results are to be used in open pit automobile transport design and operation when assessing and systematizing operating conditions, in technological calculations when regulating and planning diesel consumption and dump trucks capacity, and when correcting the regulatory standards of maintenance support, etc.

scholarly journals Influence of tire temperature conditions on the capacity of quarry dump trucks operated in JSC "CC Kuzbassrazrezugol"

2021 ◽  
Vol 315 ◽  
pp. 03013
Author(s):  
Alexander Kulpin ◽  
Mikhail Dadonov ◽  
Evdokia Kulpina ◽  
Valery Borovtsov ◽  
Zhanar Kaisanova
Keyword(s):  
Temperature Regime ◽  
Load Capacity ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Main Mode ◽  
Utilization Factor ◽  
Operating Modes ◽  
Truck Tires ◽  
Dump Trucks

More than 50-60% of minerals in Russia and the CIS countries are mined in an open-pit or in mining quarry, as it is the most economical and productive. JSC "CC Kuzbassrazrezugol" ranks second in terms of total coal production among the regions of the Russian Federation and first in Kuzbass. Quarry dump trucks are the main mode of technological transport when transporting mined rock. An important task facing road transport is to reduce the cost of transported products. The components of the costs include fuel, tires, maintenance and repair, maintenance of roads and others. It is possible to reduce tires costs by controlling tires life. Most often, thermal damage causes the emergency decommissioning of tires. It is possible to maintain the optimal temperature regime of quarry dump truck tires with the help of operating modes such as load capacity utilization factor and speed, as well as operating conditions such as ambient temperature and longitudinal slope of the road. In turn, the performance of quarry dump trucks directly depends on the operating modes. On the one hand, the growing utilization factor of load capacity and speed increase the productivity of quarry dump trucks, but at the same time this increases the temperature regime and reduces their reliability. This article proposes a methodology for determining the maximum productivity of quarry dump trucks operated in CC Kuzbassrazrezugol taking into account the temperature regime of tires.

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.

scholarly journals Modelling for degreasing the mining equipment downtime by optimizing blasting period at Erdenet surface mine

2021 ◽  
Vol 280 ◽  
pp. 08001
Author(s):  
Khavalbolot Kyelgyenbai ◽  
Serhii Pysmennyi ◽  
Serhii Chukharev ◽  
Batbolor Purev ◽  
Ijilmaa Jambaa
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Dump Truck ◽  
Mining Equipment ◽  
Weekly Basis ◽  
Surface Mine ◽  
Molybdenum Deposit ◽  
The World ◽  
Dump Trucks ◽  
Mining Works

Erdenet copper-molybdenum deposit is the biggest one in the world and has a significant impact on Mongolian society and economy. Today LIEBHERR-994B hydraulic shovels from Germany, electric shovels including EKG-10 and EKG-15 from Russia operate for the mining works, and dump truck BelAZ - 75130 used for transportation. The causes of shovel downtime are classified as technical, technological, and organizational. During the study period, 41% of the total downtime of the excavator’s park was technical, 45% was technological, and 11% was organizational downtime. For shovels, 7% of technological downtime is due to blasting, and for dump trucks 8.7%. In open-pit mining, blasting is performed on a weekly basis, so the duration of this technological downtime can be considered almost constant. If the time between blasts or period of blasting can be arranged optimally, it will be possible to reduce mining equipment’s downtime due to blasting.

scholarly journals Directions of Career Transport Development

2021 ◽  
Vol 21 (3) ◽  
pp. 144-150
Author(s):  
Mark L. Khazin
Keyword(s):  
Rock Mass ◽  
Carrying Capacity ◽  
Power Plants ◽  
Negative Impact ◽  
Specific Capacity ◽  
Mining Industry ◽  
Dump Truck ◽  
Diagnostic Systems ◽  
Dump Trucks ◽  
Mining Dump Truck

Since the beginning of the civilization emergence, people began to use the minerals extraction on the surface of the Earth and the rock mass transportation. One of the main tasks of the mining industry is the transportation of an increasing rock mass amount from the quarry, which has caused the need to increase the power and carrying capacity of mining dump trucks. Today, we can assume that the revolutionary period of increasing the carrying capacity in the creation of heavy-duty dump trucks is over. Further improvement of the designs of frame dump trucks is impractical. To create super-powerful dump trucks capable of efficiently transporting rock mass from deep horizons, fundamentally different designs of machines and power plants are needed. The most important requirement for promising machines is to minimize the negative impact on the environment. In its development, mining vehicles have come a long way: a hand wheelbarrow - a horse cart - a truck - a diesel mining dump truck - a diesel-electric mining dump truck - an electric mining dump truck - an unmanned electric mining dump truck. According to the law of the transition from quantity to quality, it can be assumed that the period of increasing the carrying capacity of mining dump trucks has ended (quantitative changes), and a new period of qualitative changes begins (the development of new types of mining transport, an increase in the specific capacity of a power plant, the use of other energy carriers, etc.). An important area is the use of artificial intelligence: robotic dump trucks, self-diagnostic systems, etc. The main requirement for promising machines is to reduce the cost of transporting rock mass and a minimum negative impact on the environment.

EVALUA TION OF DUST EMISSIONS DURING TRANSPORTA TION OF ROCK MASS AT DEPOSITS DEVELOPED OPEN PIT MINE

2020 ◽  
Vol 2 (1) ◽  
pp. 78-87
Author(s):  
S.V. KOVSHOV ◽  
◽  
A.V. PASYNKOV ◽  
Keyword(s):  
Rock Mass ◽  
Comprehensive Analysis ◽  
Open Pit Mine ◽  
Dust Control ◽  
Open Pit ◽  
Dust Formation ◽  
Dust Suppression ◽  
Dust Emissions ◽  
Opencast Mine ◽  
Dump Trucks

The issues of dust formation and dust suppression in quarries during transportation of rock mass are considered. Foreign and Russian techniques and methods of dust control in open pit mine are analyzed. The limit number of equipment units for the Noyon-Tologoi opencast mine is established, and the dependence of the gross emission of inorganic dust on the number of dump trucks is determined. As a result of a comprehensive analysis, dust suppression methods for a polymetallic open pit mine are proposed.

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