Shovel In Mining

Shovel In Mines

Shovel is the most commonly used excavating equipment in opencast mines. It is mounted on crawler.

This machine excavate the rock or ore by digging for its operating base to upward (crown motion) & dump it either on the dumper or railway wagon or on the spoil heap.

Shovel may be electrically operated or diesel operated depending on the mode of transmission.

There are basically two types of shovel used in mining operations.

a)Rope Shovel b)Hydraulic Shovel

The Main Parts Of Rope Shovel Are:

The Main Parts Of Hydraulic Shovel Are:

A shovel's work cycle, or digging cycle, consists of four phases:

a) Digging

b) Dumping

c) Swinging

d) Returning

The digging phase consists of crowding the dipper into the bank, hoisting the dipper to fill it, then retracting the full dipper from the bank.

The swinging phase occurs once the dipper is clear of the bank both vertically and horizontally. The operator controls the dipper through a planned swing path and dump height until it is suitably positioned over the haul unit (e.g. truck).

Dumping involves opening the dipper door to dump the load, while maintaining the correct dump height.

Returning is when the dipper swings back to the bank, and involves lowering the dipper into the track position to close the dipper door.

Comparison Between Rope Shovel & Hydraulic Shovel

Watch Video

TO WATCH MORE MINING RELATED KNOWLEDGEABLE VIDEOS

CLICK ON BELOW LINK

https://www.youtube.com/channel/UCGt9WOPcOXZpTal94BSh-EA/videos?view_as=subscriber

Comments

SIDE DISCHARGE LOADER MACHINE (SDL) IN UNDERGROUND MINES

SIDE DISCHARGE LOADER MACHINE It is a popular coal loading machine of u/g mines. Which is mounted on the crawler track and is designed for loading the broken rocks on to a conveyor, in tub or to unload coal to the right or left of the machine. Being crawler mounted the SDL can work in gradient up to 1 in 4. It is totally flameproof machine, which make them suitable for operation in gassy mines. Side Discharge Loader Machine A SDL has a bucket at front, which load the coal /ore from the face and transport or dump onto the chain conveyor, belt conveyor which is installed near the faces or in tub and mine cars. All the movements of bucket are done hydraulically for which hydraulic pack is mounted on machine itself. The bucket capacity of SDL is 1𝒎^𝟑. The Motor capacity is 65 HP/ 550 V. the motor shall be DGMS approved and ISI marked. The SDL can work in distance upto 10m. Due to its crawler mounted it is not use for long distances. The SDL is ...

HEADGEAR STRUCTURE IN MINES

HEADGEAR STRUCTURE HEADGEAR STRUCTURE It is a steel or concrete frame work on the shaft mouth. The headgear consists of nearly, vertical columns which is two front legs columns, two main leg columns & two back legs columns. Which is inclined at 1 in 8 to 1 in 10. towards the winding engine room. The vertical and inclined legs are joined by horizontal girder. The top of the headgear has a steel platform, or plate & the bush bearing of the winding pulleys, rest on the vertical numbers of headgear frame. Above the banking level, there is a detaching plate or detaching bell which is fixed in the headgear structure. This detaching plate is fixed at the height of length of cage + length of cage suspension gear + 3 to 7 m. This margin of 3 to 7 meter allows a cage to be lifted for materials, to be slung, beneath it. Above the Detaching plate there is a headgear pulley which is fixed at the top of the structure and the winding rope is passed ov...

LOAD HAUL DUMP MACHINE (LHD) IN UNDERGROUND MINES

LOAD HAUL DUMP MACHINE (LHD) LOAD HAUL DUMP MACHINE L.H.D is used in underground mines for the loading, hauling and dumping of the material from the working face. L.H.D’S are used in more than 75% of the u/g mines throughout the world. L.H.D are available in both Diesel & Electric versions. Diesel version is easily transportable from one location to another and have diesel engines as power drive of 75 to 150 HP or more. Engines are either water or air cooled. L.H.D with Electric motors as drives have general capacity of 75 to 150 HP. These are operative at medium voltage of 380 to 550 volts. Flexible trailing cables are provided with reeling/unreeling facility to feed power. In L.H.D machine an axial piston type motor is used. The maximum speed of L.H.D is nearly, 8-10 km/hr. when the machine is Empty. But when the L.H.D machine is loaded the maximum speed is 3-5 km/hr. The standard bucket capacity of the L.H.D is 1.6...

MininG EngineeR

Search This Blog