Move of  Material

Welcome visitor number  

Most  probably you can  improve the  profitability of  your process by using the  Site Simulation  link that leads to the CLHsite,  a tool to evaluate problems that arise when you have to move material from one place to another.  The CLHsite is an applet built in the Java2SDK,  Standard  Edition Version 1.2.2.   

Though you normally have to stick to traditonal concepts of equipment it is not a trivial task to combine them in an efficiant way. When investigating  processes of  material moving I have very often found out that it  will pay off  to be in control of  how everything fit together from time to time. The CLHsite will show you how things work together in a technical sense. So for your advantage, always use the CLHsite to investigate your process to secure optimum use of  the resources involved. 

The hourly production when you are loading or have a selfloading hauler to continuously carry a load of  Q units in  its  bucket or body  from a load area to a tip area you can estimate as  P = Q* 60 / T  where T is the roundtrip time in minutes. If you are working only the fraction E  minutes of an hour the production per hour shall be reduced  to  P =  Q* E / T . With a number of  N equally equiped  haulers you can estimate the hourly production as   P = Q*N*E / T .  If the haulers are sharing  the same loader and receiver there might be delay times to consider when evaluating the roundtrip time. 

The CLHsite will understand where and when delay times comes into account,  it only requires input data from one "undelayed" hauler .  

Anything able to carry a load such as a truck, a wheel loader, an excavator, a ship, a plane and so on, can be regarded as a hauler and the load measured in loose m3 can be associated with pieces. 

You always have to define 

• a  LOAD AREA  and a  TIP AREA  where just one hauler can be at a time .  

• Loader Activity Time after loading a Hauler. This may result in that each hauler has an extra delay on the load area before it will be loaded. 
• Lowest Tip Interval allowed in Seconds. If for instance you have a hopper that otherwise will overflow, an extra delay for each hauler may be necessary on the tip area. 

Whatever number of  haulers, the CLHsite will show them graphically moving in their continuous state. A delay time at a fill or load area will slow down the speed between for each hauler. Normaly they will be queuing up the delay time at a boarder. A delay time on an area will be interpreted as a stop before loading or tipping. 

christer.lindh@mbox303.swipnet.se