Engineer Talk about port mechanics

Till now we talked about tippling process and the way wagon tippling takes place and its maintenance.So what happens next?. Actually tippler tipples and what ever the material is in the wagon gets unloaded into hopper. Now , What is a Hopper ? A hopper is simply a conical structure wide at the top and narrow at the bottom.It is designed so as to free and constant flow of materials.Inside the hopper,its walls are fastened with liner plates , so that the mother plate by which the hopper is made, doesnt get worn out. The liner plates are made up of different materials depending on the cost. Mostly stainless steel,Manganese steel , Hardox plates are used. Fabrication is a vast subject , different metals and combination alloy's are used for different purposes. Even many countries have their own standards and codes ,for exmple  china uses Q355,Q255 structural steels for heavy structures. It doent mean that these are the only steels , there are wide variety of options. Every company fabri

 All mechnical equipments indeed any equipment need maintenance at regular intervals. By proper maintenance we can stretch the life of the equipment beyond the validity, Even when maintained properly, problems and failures occurs due to many reasons. Human error's have to be eliminated to avoid major accidents and failures, which causes death and economical loss. Rack and pinion changing When and how do we know to change the rack and pinion ? . Simple, observation and constant monitoring have to be done. So if the rack and pinion are wear out , there will be slippage, there are chances of free fall at the position where wear is more.                                                                          Pinion wear out In order to change the rack, "as the rack is assembled in parts to tippler with bolts", a set simply be changed by removing bolts and replace with new one and properly tighten the bolts at required torque. For the pinion to change , the intermidiate shaft

The place where the wagon is placed , to be tippled , is called table . On to the table the rail is fixed with clamps , it is a detached portion from the ground rail. There is a safe gap of 10 to 12 mm maintained between the table and ground rail , so that when the platform rises for tippling it doesn't collides with the rail on the ground.  How do one know's the position of wagon on table ? For positioning of wagon there lies a curved convex portion on rail , on the table , for the wheels of wagon to exactly sit without movement during tippling process. When the wagon is tippled at an angle of 80°  , there lies a structure called ARMS , with rubber pads attached to them.  The Arms hold the wagon from free fall in to the hopper . The tippler tipples the wagon till an angle of 135° ,in this position the wagon is completly rested on the arms. They are just free moment equipment , they are not rotated by any external means , the arms are connected to a rigid structure with a pin