Frame weight and anti-fatigue co-optimization of a mining dump truck based on Kriging approximation model

2016 ◽  
Vol 66 ◽  
pp. 99-109 ◽  
Author(s):  
Chengji Mi ◽  
Zhengqi Gu ◽  
Yong Zhang ◽  
Shuichang Liu ◽  
Sha Zhang ◽  
...  
Keyword(s):  
Dump Truck ◽  
Approximation Model ◽  
Kriging Approximation ◽  
Mining Dump Truck

scholarly journals Methodology for determining permissible operating modes of DC traction motor of quarry dump truck to ensure satisfactory commutation

2021 ◽  
pp. 36-40
Author(s):  
V. V. Kharlamov ◽  
◽  
Yu. V. Moskalev ◽  
S. N. Naiden ◽  
◽  
...  
Keyword(s):  
Experimental Data ◽  
Dc Motor ◽  
Dump Truck ◽  
Traction Motor ◽  
Operating Modes ◽  
Excitation Coefficient ◽  
Mining Dump Truck

The article considers an approach to determining the permissible ranges of changes in the armature voltage, armature current and the excitation coefficient of the DC traction motor of a mining dump truck to ensure satisfactory commutation. When the DC motor is running in the specified modes, the probability of sparking in the collector-brush unit with a degree of 2 points will be minimal. A method for determining the permissible operating modes of a mining dump truck traction motor to ensure satisfactory commutation is proposed. The method allows, based on the analysis of experimental data, to determine the permissible ranges of changes in voltage, armature current and excitation coefficient, at which the degree of sparking does not exceed 1½ points

Comparative Study on Optimization Design Methods of Steering Mechanism

2012 ◽  
Vol 490-495 ◽  
pp. 2191-2195
Author(s):  
Jing Gao Lin ◽  
Jue Yang ◽  
Wen Ming Zhang
Keyword(s):  
Optimization Design ◽  
Design Method ◽  
Steering System ◽  
Paper Analysis ◽  
Design Methods ◽  
Dump Truck ◽  
Mechanism Analysis ◽  
Steering Mechanism ◽  
Optimal Design Method ◽  
Mining Dump Truck

In the paper, analysis and comparison is made for different optimization design methods of the separation steering trapezoidal mechanism based on the steering system of 170 tons mining dump truck. The optimal design method is obtained, and research shows that the steering mechanism analysis method introduced in many automotive design textbooks has errors and should be improved.

scholarly journals Fluxgate Sensors for Onboard Weighing Systems of Heavy-Duty Dump Trucks

2021 ◽  
Vol 19 (3) ◽  
pp. 25-32
Author(s):  
A. P. Nikishechkin ◽  
L. M. Dubrovin ◽  
V. I. Davydenko
Keyword(s):  
Ease Of Use ◽  
The Body ◽  
Dump Truck ◽  
Measuring Device ◽  
Traction Motors ◽  
Fluxgate Sensor ◽  
Useful Signal ◽  
Control Section ◽  
Mining Dump Truck ◽  
Excitation Winding

The article reviews the results of the authors’ research on the possibility of using the magnetic field strength generated by DC traction motors as a useful signal carrying information about weight of cargo transported by a mining dump truck.The objective of the research was to find a way to determine weight of cargo carried by a mining dump truck. In contrast to the existing onboard weighing systems, it becomes possible to create a compact autonomous device that does not require integration of sensors into the body structure and electrical circuits of the truck.Problems of increasing the efficiency of measuring devices based on fluxgate converters are considered with the view of using them as onboard systems for estimating cargo weight. The sensitivity of the fluxgate sensor can be increased by increasing both the amplitude and the effective value of the voltage applied to its excitation winding. The proposed original circuit for feeding the fluxgate sensor’s excitation winding from a modulated signal generator made on logical elements allows increasing the voltage supplied to the fluxgate sensor’s excitation winding without increasing the supply voltage, and by increasing voltage surges at the fronts of rectangular modulated high-frequency pulses, as well as due to resonant phenomena. The use of such a generator excludes the influence of the fluxgate sensor’s excitation winding on the generator frequency, since the frequency of modulating signals becomes the operating frequency of the fluxgate sensor, and it remains unchanged. The increased sensitivity makes it possible to install the sensor in any convenient place in the dump truck cab, and not in the immediate vicinity of traction motors.Evaluation of cargo weight is carried out during movement of the dump truck along the control section of the road. The readings are taken from an ammeter (milliammeter), the scale of which is pre-calibrated in mass units. Measurements of mass should be carried out under the same modes of dump truck movement and with the same location of the fluxgate sensor as when calibrating the scale of the measuring device. The control section of the route on which the measurements are carried out must be the same or similar to the one on which the measuring device was calibrated.The proposed device is distinguished by ease of use, is characterised by low energy consumption, is compact, does not contain expensive elements and does not require careful maintenance.

scholarly journals Effect of operating conditions on a heavy truck ride comfort with hydro-pneumatic suspension system

2021 ◽  
Vol 304 ◽  
pp. 02011
Author(s):  
Le Xuan Long ◽  
Dang Viet Ha ◽  
Le Van Quynh ◽  
Bui Van Cuong ◽  
Vu Thanh Niem
Keyword(s):  
Ride Comfort ◽  
Surface Condition ◽  
Operating Conditions ◽  
Dump Truck ◽  
Vibration Model ◽  
Pneumatic Suspension ◽  
Heavy Truck ◽  
Set Up ◽  
Mining Dump Truck ◽  
Vehicle Vibration Model

The purpose of this paper is to analyze the performance of the hydro-pneumatic suspension system (HPSs) of a mining dump truck on ride comfort under operating conditions. To achieve goals, a 3-D full-vehicle vibration model of a mining dump truck with 10 degrees of freedom is set up to analyze the effects. A nonlinear mathematical model is set up based on the nonlinear characteristics of the HPSs to determine their vertical force which is connected with a 3-D full-vehicle vibration model. The effects of operating conditions on a heavy truck ride comfort are respectively analyzed through the values of the root mean square of acceleration responses of the vertical cab, pitch and roll angles of cab (awc, awphi and awteta). The analysis results indicate that the survey conditions have a great influence on vehicle ride comfort. Especially, the values of awc, awphi and awteta with the poor road surface condition respectively reduce by 43.1%, 45.9% and 61.8% compared to the very poor road surface condition at vehicle speed of 30 km/h and full load.

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.

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