Research on Tractor of Coal Mine Horizontal Belt Extension Transfer Machine

2013 ◽  
Vol 791-793 ◽  
pp. 750-753
Author(s):  
Ping Huai Mao ◽  
Bing Zhai ◽  
Jing Xi Li
Keyword(s):  
Coal Mine ◽  
Frame Structure ◽  
Main Function ◽  
Working Process ◽  
Loading Problem ◽  
Use Efficiency ◽  
Set Up ◽  
D Model ◽  
Direct Use ◽  
Machine Structure

Coal mine horizontal belt extension transfer machine is designed in order to solve the mine loading efficiency is not high; especially the most loading mechanical failed to solve continuous loading problem. This machine can also load a whole column tramcars and tramcars without modification with direct use, efficiency improve obviously. This paper first introduces transfer machine structure and working process, and introduces its important part tractor, structure and main function; Then as the main force of tractor parts, we frame for stress analysis, and set up the frame of 3-D model; Finally put the model into ANSYS of its structure statics analysis, and according to the result of analysis frame structure optimization. We will use the same approach to the design of tractor other components, finally complete the complete tractor. Through the study of tractor, summarizes the design methods for other similar mechanical similar provide a theory basis for the design.

The Lightweight Design for Tractor Frame of the Coal Mine Belt Horizontal Extension Transfer Machine

2013 ◽  
Vol 791-793 ◽  
pp. 730-733
Author(s):  
Ping Huai Mao ◽  
Bing Zhai ◽  
Jing Xi Li
Keyword(s):  
Coal Mine ◽  
Optimization Design ◽  
Material Selection ◽  
Lightweight Design ◽  
Parameters Optimization ◽  
Frame Size ◽  
Material Optimization ◽  
New Material ◽  
Loading Problem ◽  
Set Up

Coal mine horizontal belt extension transfer machine is designed in order to solve the mine loading efficiency is not high, especially the most loading mechanical failed to solve continuous loading problem. Among them, the tractor as power to provide the transfer machine, its importance cans be imagined. Through the statics analysis of the tractor frame, we draw the conclusion: Preliminary plan is too conservative given frame size, frame heavier, cause material waste, processing difficult. We will through two aspects of size parameters optimization and material optimization design, make the tractor frame on the premise of guarantee function materials more provinces, lighter weight, lower cost. Size options and set up new material selection, and then we stand for the statics analysis. Analysis results show that our lightweight design of tractor frame is a success.

A Novel Routing Network Algorithm Via Neutrosphic Fuzzy Set Approach

2021 ◽  
pp. 9-22
Author(s):  
S.Krishna Prabha ◽  
◽  
Broumi said ◽  
Selçuk Topal ◽  
◽  
...  
Keyword(s):  
Public Transportation ◽  
Routing Algorithm ◽  
Optimal Path ◽  
Routing Algorithms ◽  
Network Data ◽  
Main Function ◽  
Network Nodes ◽  
Web Interfaces ◽  
Telephone Networks ◽  
Set Up

Routers steer and bid network data, through packets that hold a variety of categories of data such as records, messages, and effortless broadcasts like web interfaces. The procedure of choosing a passageway for traffic in a network or between several networks is called routing. Starting from telephone networks to public transportation the principles of routing are applied. Routing is the higher-level decision-making that directs network packets from their source en route for their destination through intermediate network nodes by specific packet forwarding mechanisms. The main function of the router is to set up optimized paths among the different nodes in the network. An efficient novel routing algorithm is proposed with the utilization of neutrosophic fuzzy logic in this work addition to many routing algorithms for finding the optimal path in the literature. In this approach, each router makes its own routing decision in the halting time. Various concepts like routing procedures, most expected vector, most expected object, and list of estimated delays are explained.

scholarly journals Fertilization expression via nitrogen indices in soybean crop under two system tillage

2020 ◽  
Vol 48 (2) ◽  
pp. 799-813
Author(s):  
Ioanna KAKABOUKI ◽  
Antigolena FOLINA ◽  
Charikleia ZISI ◽  
Stella KARYDOGIANNI
Keyword(s):  
N Uptake ◽  
Conventional Tillage ◽  
Fertilizer Application ◽  
Nutritional Properties ◽  
Agronomic Efficiency ◽  
Glycine Max L ◽  
Use Efficiency ◽  
Set Up ◽  
Efficiency Effects ◽  
Nitrogen Harvest

Soybean (Glycine max L.) constitutes a crop that is currently of interest both for its nutritional properties in humans and animals and for its contribution to soil nitrogen. It belongs to legumes, that means that it can take N2 and channel it to the soil, to be assimilable from plants. In addition, its high oil and protein content makes it important because of its nutritional properties. Moreover, soybean is a crop that has a major impact on nitrogen indicators. In this study, set up two same experiments in 2018-2019, in Western Greece. There were identified the effects of different fertilizer application (Control, N80, N100, N120), and different tillage (conventional tillage (CT), no tillage (NT)), on soil (organic matter, root density, no nodules/soil) and in agronomic (LAI, height, N% in upper parts, Yield, N% in seeds, N uptake in upper parts, N uptake in seed, N total uptake) characteristics. As well as in nitrogen indicators (nitrogen use efficiency, nitrogen harvest index, nitrogen agronomic efficiency, effects of absorption, effects of uptake). Soil properties were affected mainly by the tillage. However agronomic characteristics presented more differences between the different fertilizer application and finally the indicators were affected on both the parameters.

Jaw Crusher Based on Discrete Element Method

2013 ◽  
Vol 312 ◽  
pp. 101-105
Author(s):  
Fu Sheng Mu ◽  
Hui Li ◽  
Xing Xue Li ◽  
Hong Zhi Xiong
Keyword(s):  
Energy Consumption ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Working Process ◽  
Element Analysis ◽  
Dem Simulation ◽  
Force Condition ◽  
Jaw Crusher ◽  
Set Up ◽  
Element Method

In order to analyze the force condition and crushing power of crusher teeth plate, the discrete element method models of jaw crusher and double-cavity jaw crusher are set up respectively using EDEM, a kind of software for discrete element analysis. Meanwhile, the working process, the loading force on the teeth plate and crushing power are simulated. The results show that: the rationality of the DEM simulation is declared, and the crushing process of the particles is also shown intuitively. The loading force condition and the crushing power of the moving jaw teeth plate serve as basis for its abrasion and energy consumption respectively.

Evaluation Method of Coal Mine Safety Based on Evidence Theory

2012 ◽  
Vol 524-527 ◽  
pp. 426-430
Author(s):  
Gang Xu ◽  
Yang Ding ◽  
Tian Jun Zhang
Keyword(s):  
Coal Mine ◽  
Evaluation Method ◽  
Production Systems ◽  
Evaluation Model ◽  
Evidence Theory ◽  
Mine Safety ◽  
Coal Mine Safety ◽  
Mine Production ◽  
Set Up ◽  
Decision Making Rule

Coal mine safety assessment is an important ways for identification and elimination of danger in coal mine production systems. This paper introduce D-S evidence theory in evaluation of coal mine safety to solve the uncertainty problem of randomicity and faintness in evaluation of coal mine safety. The evaluation model of coal mine safety is set up based on evidence theory and the detailed arithmetic of evidence theory is brought forward, and according to some decision making rule the Chaohua Coal Mine has been evaluated. The results show that the model can solve the problem of uncertainty preferable and evaluation results with more accuracy and reliability.

Research on the Flow Character of Regenerative Heating Furnace Affected by the Switching Model

2011 ◽  
Vol 383-390 ◽  
pp. 6210-6214
Author(s):  
Kun Can Zheng ◽  
Zhi Wen ◽  
Xun Liang Liu ◽  
Wen Fei Wu ◽  
Xia Lan Huang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heating Furnace ◽  
Design And Optimization ◽  
Switching Model ◽  
The Law ◽  
Set Up ◽  
Regenerative Furnace ◽  
D Model

On the basis of wholly analyzing the mechanism of the heat transfer in the 1880 regenerative furnace, the physical and mathematical 3-D model was set up to describe the heat transfer and combustion in the furnace, and the CFD software was used to simulate the whole combusting process in detail. From this, the law of the flow affected by four classical switching modes was studied in emphasis. The conclusions in the study were helpful to the reasonably design and optimization controlling of such furnaces.

Study on the Safety Assessment System of Fire Hazard in Coal Mine

2011 ◽  
Vol 415-417 ◽  
pp. 2126-2129
Author(s):  
Jia Yong Zhang ◽  
Xue Min Gong ◽  
Li Wen Guo
Keyword(s):  
Coal Mine ◽  
Safety Assessment ◽  
Fire Hazard ◽  
Electrical Equipment ◽  
Assessment System ◽  
Coal Bed ◽  
Fire Control ◽  
Fire Hazards ◽  
Sustained Development ◽  
Set Up

Fire hazard is one of the severe casualty accident, which injures the life-safety of the miner crucially and disturbs the sustained development of the coal mine. Recently the check-up table is the mere method applying for the assessment of the fire hazard, and the assessment conclusion is subjective intensively and the Index System of the Safety Assessment is not perfect, because the dangerous degree of fire hazard is set up by the professional. In this paper, the seven factors were generalized through the statistic and analysis of the 56 fire hazards, which included self-ignite gradation of coal bed, miner stuff, management of ventilation of coal pits, fire control system, safety administration, mine combustible, risk ratio of the electrical equipment. The ratio of each factor was confirmed by the method of layered analysis, the safety degree was set up through data processing and the proper measure and suggestion were put forward according to the safety result.

Numerical Simulation of Intercepting Efficiency on Airbag Active Protection System

2010 ◽  
Vol 156-157 ◽  
pp. 360-366
Author(s):  
Kun Zhong ◽  
Zhong Hua Du ◽  
Liang Zhou ◽  
Li Li Song
Keyword(s):  
Element Model ◽  
Protection System ◽  
Working Process ◽  
3D Finite Element ◽  
Advantages And Disadvantages ◽  
Active Protection ◽  
New Type ◽  
Simulation Results ◽  
Set Up ◽  
Metal Jet

Based on the advantages and disadvantages of existing active protection system, this paper proposes a new type of airbag active protection system. The components and working process of the system is introduced. Then taking the physical process of airbag active protection system against a rocket projectile as an example, a 3D finite element model (FEM) of airbag and rocket projectile is set up. With the assistance of the software LS-DYNA3D, through performing the simulation when the rocket projectile touched the airbag with an angle 30° from the normal interface, the intercepting efficiency is calculated and analyzed in the simulation. Results show that airbag can deform and rupture the metal jet generated by the rocket projectile, thus greatly reduce its armor penetrating effect. Finally, it shows excellent protective effect of the airbag active protection system.

Rc Infilled Frame: Shaking Table Tests on a Full Scale Model

2007 ◽  
Vol 347 ◽  
pp. 285-290
Author(s):  
Elena Candigliota ◽  
Alain Le Maoult
Keyword(s):  
Research Program ◽  
Structural Characteristics ◽  
Seismic Intensity ◽  
Full Scale ◽  
Shaking Table ◽  
Frame Structure ◽  
Scale Model ◽  
Limit States ◽  
Infilled Frame ◽  
Set Up

Tests on shaking table have been carried out on a 3D full scale infilled r.c. frame specimen (55 tons). These tests have been performed by the EMSI Laboratory of C.E.A. Saclay (France) together with a research team of the Universities of Chieti-Pescara (Italy), Roma Tre (Italy) and Patras (Greece). These tests are included in Ecoleader European research program. Many characterization tests of infill components (mortar and bricks) have been performed in the SCAM Laboratory of the University of Chieti-Pescara while tests on masonry walls were made in the laboratory of University of Rome 3. The structure represents the first floor of a two floors frame structure previously tested. The mockup is a full-scale one storey rc infilled frame with four columns, 3 meters high, with about 4 meters side square floor and infilled with double bricks wall. The main aim is to get information about the behavior of real structures. The instrumentation with about one hundred channels was set up to measure the rc frame response and the different behavior of the double walls during the tests. First, monodirectional and bidirectional tests at low seismic intensity (0.10 g and 0.15 g PGA levels) have been performed on the bare frame in order to characterize its structural characteristics and to check the design provisions. Then, the bare frame has been infilled and other tests have carried out at increasing seismic intensity in order to define its serviceability and ultimate limit states. Monodirectional and bidirectional tests up to 0.45 g PGA level were carried out. The last sequence included a monodirectional test on the infilled frame with only two walls. The high seismic input (0.55 g PGA level) was parallel to the direction of the walls. In this paper, research program and some main test results are presented.

Soil - Structure Interaction Effects on the Bridge Isolation System

2011 ◽  
Vol 374-377 ◽  
pp. 2375-2378
Author(s):  
Hai Qing Liu ◽  
Ya Bing Wang
Keyword(s):  
Comparative Analysis ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structural System ◽  
Isolation System ◽  
Structure Interaction ◽  
Rubber Bearing ◽  
Laminated Rubber Bearing ◽  
Set Up ◽  
D Model

Isolation technology has been applied to bridges more than before, and soil-structure interaction on structural system is gradually attracted people's attention, but combine the two is also considered very few especially in the bridge. In this paper, we combine the two cases, and set up 3-D model by ANSYS, do comparative analysis in three cases. The first is no bearing and no soil-structure interaction, the second is with laminated rubber bearing but not considering the soil - structure interaction, and the last one is considering both laminated rubber bearing and soil - structure interaction. Ultimately it proves that soil - structure interaction on the structure does produce effects what can not be ignored.

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