Primarily speaking, mining machines mostly work under time varying and non-stationary load conditions. It deals with the concept of condition monitoring o CM, which is evolution of prognostic and evolutionary systems.
The primary aim of CM in mining machinery is to examine the present functional health. Real time assessment is pivotal as it is used for predicting fault in operation or components and so, improving the equipment performance.
The condition monitoring of the mining machines comes with various transducers like acoustic emission sensor, thermocouples, accelerometers and tachometers.
These sections are segmented into coherent and discrete analysis to extract features that vectors fed into the post processing and pattern recognizable algorithms. It will include sensor failure detection, diagnosis, prognosis and reporting too.
Importance of safety in mining machinery:
Mining industry came up with various safety programs with control technologies and interventions. The primary aim is to reduce injuries to the personnel working near mobile equipment or machinery.
These programs mainly attempt to understand machine system specifications and requirements to address some of the human interface issue involving maintenance and operation of the equipment. Accidents are too common. Learn about the contributing factors to accidents now.
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Mining machinery |
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Use of hydraulic in mining machinery to enhance safety quotient:
The first thing that pops up in your mind is what makes hydraulics perfect for the mobile mining machinery. To start it off, hydraulics is designed for mining for same reason it is perfect for any other sector. Those are reliability, controllability, power density and service ability.
- Some of the mining machines like CAT 6090, Belaz 75710 and more are able to cover up workloads which other machines even fail to comprehend. Their services would not be possible without the help of hydraulics.
- Mining is in requirement of processing earthen material on different levels. The basic CAT 6090 is driven up a whopping horsepower engine of 4500, which will be running 8 variable displacement piston pumps. Each come with a flowing of 250 gpm which will not include six swing pumps flowing at around 130 gpm each.
- The total volume of the hydraulic fluid is around 3500 gallons in this machine. It operates at more than 5000 PSI with a bucket payload of around 103 tons.
Special focus on the hydraulic pressure:
The present hydraulic circuit of this machine is as complex as injection molding machine or even the hydraulic press. There you will find closed loop control of temperature, flow and pressure with limiting horsepower pumps. The focus of this circuit is efficient and productive and with an approach that ensures higher output level in some extreme harsh climatic conditions. An example might help you understand the deal well. A 1000+ gpm cooling circuit with the help of hydraulic motor powered coolers is not enough to keep hydraulic fluid within acceptable range. It has sophisticated version of control system to reduce the present pump flow for lowering input power. It helps in reducing the heat load completely.
The qualities of hydraulics to the rescue:
A massive machine like the mining ones have capability of amazing productivity, which comes with is shares of potential danger. That’s when the inherent properties of Hydraulic Pump come to action. It helps in improving the safety and controlling ability to the core.
The wheel motors of the track use hydraulic retardation valves. It helps in preventing over speed while traversing downhill. Moreover, the sophisticated kinematic control of the mechanism helps to over functions like automatic roll back prevention, constant angle bucket guidance and the constant boom momentum control.
Mining machinery is not just safe for the techniques applied to circuitry but also for addressing major quality into component construction. The level of quality control of the hydraulic cylinders in mining applications is no doubt shocking!
