Winding engines and fittings

 ।

At every shaft,including a shaft in the course of being sunk, where winding is effected by means of an engine,the following provisions regarding winding engines shall have effect,namely There shall be on the drum such flanges,and also if the drum is conical or spiral such other appliances,as will be suffickecxtzfthdrdient to prevent the rope from slipping or coiling unevenly. Except the koepe system of winding,the end of the rope shall be securely fixed in such a manner that the rope is not unduly strained.There shall be at least two turns of the rope on the drum when the cage or other means of conveyance is at its lowest working point in the shaft. (a) There shall be provided one or more braks on the drum or the drum shaft,which-(i)if there are two cages or other means of conveyance when the maximum torque is applied in either direction and(ii)If there is only one cage or other means of conveyance,will hold the loaded cage or other means of conveyance in midshaft when the maximum torque is applied downwards.(b)At least one of the brakes shall be so designed that the brake remains at the on position except when operated.(c)Where the brake or brakes are power operated at least one of them shall be arranged to be applied automatically at all times if the power supply fails.(d)The brake on the drum shall be used only for the propose of keeping such drum statonary and not for lowering the cage or other means of conveyance,except in case where the engine is to be worked at a very lo w speed as when examining the winding rope or the shaft.Where the winding engine is worked by steam or compressed air,a screw stop value shall not be used as the controlling valve of the engine.Every engine shall be equipped with a reliable depth indicater showing to the winding engine man the position of the cage or other means of conveyance in the shaft,and an automatically device that the ring a bell in the engine room when the ascending cage or other means of conveyance is at a distance of not less than two revolution of the drum from the top of the shaft.

Mining Engineering

Comments

Post a Comment

Mining Engineering

First-aid station

Image
First-aid  station is a place fixed by the manger for rendering first-aid to person injured.Every first-aid station is provided with equipment as prescribed in the Third schedule of mines Rules namely: a stretcher and two blanket,Sets of splints(1.4m,0.9m,0.3m,)and sufficient tringular bandages.First-aid boxes(or cupboards),one per150 person,containin sufficient supply of large and small dressings and burn dressings,sufficient supply of sterilised cotton and adhesive plaster,roller bandages,Dettol or other antiseptic solution,a tourniquet,scissors and safety pins,soap.                                                  First aid station shall be provided at the following places On surface:-                     At pit top/incline mouth.In workshop,screening plant and    ...
Read more

Audio visual alarm

Image
  When a truck or dumper backs up a person standing behind the vehicle may get crushed.To alert such a person truck/dumpers are provided with audio visual alarm.As soon as the vechile is put in reverse gear, a special horn starts blowing and the backlight flashes.It is a statutory requirements that truck,dumper or loader shall not be run unless the audio visual alarm is working.
Read more

MINE WORKING

Image
  Opencast working--In open cast working,the following precautions shall be observed,namely:                                          In alluvial soil,morum,gravel,clay,debris or other similar ground-;*the side shall be sloped at an angle of sefty not exceeding 45degree from the horizontal or such other angle as the regional inspector may permit by an order in writing are subject to such conditions as he may specify therein;or the side shall be kept benched and the hight of any bench shall not exceed 1.5meter and the breadth thereof shall not be less than the height:।       Provide that the regional inspector may,be an order in writing and subject to such conditions as he may specify therein, exempt form the operation of his clause any working in the case of which special difficult exist,which in his opinion make compily with the provisions their ...
Read more