Earth moving equipments

  • 1,840 views
Uploaded on

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
1,840
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
193
Comments
0
Likes
3

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. 05/01/1305/01/13 11EARTH MOVINGEARTH MOVINGEQUIPMENTSEQUIPMENTS
  • 2. 05/01/1305/01/13 22CONSTRUCTION & WORKING OFCONSTRUCTION & WORKING OFPOWER SHOVELPOWER SHOVEL
  • 3. 05/01/1305/01/13 33POWER SHOVELSPOWER SHOVELS Power Shovels are used primarily to excavate earthPower Shovels are used primarily to excavate earthand load it into trucks or tractor pulled wagons or ontoand load it into trucks or tractor pulled wagons or ontoor onto conveyor belts.or onto conveyor belts. They are capable of excavating all classes of earth,They are capable of excavating all classes of earth,except solid rock, without prior loosening, like inexcept solid rock, without prior loosening, like inquarries, mines in any road projects etc.quarries, mines in any road projects etc. Power shovels are considered as basic tool forPower shovels are considered as basic tool forexcavating the materials and loading.excavating the materials and loading. They may be mounted on crawler tracks, in which caseThey may be mounted on crawler tracks, in which casethey are referred to as crawler mounted shovels. Suchthey are referred to as crawler mounted shovels. Suchshovels have very low travel speeds.shovels have very low travel speeds. However, they may be mounted an rubber-tired wheels.However, they may be mounted an rubber-tired wheels.Single-engine self-propelled units are powered andSingle-engine self-propelled units are powered andoperated from excavator cab. The non-self-propelledoperated from excavator cab. The non-self-propelledunits mounted on the rear of tracks, which are referredunits mounted on the rear of tracks, which are referredto as truck-mounted, have separate engines forto as truck-mounted, have separate engines foroperating them.operating them.
  • 4. 05/01/1305/01/13 44POWER SHOVELSPOWER SHOVELS The basic parts of a power shovel include theThe basic parts of a power shovel include themounting, cab, boom, dipper stick and bucket or dippermounting, cab, boom, dipper stick and bucket or dipperand under carriage unit.and under carriage unit. Power unitPower unit Under carriage unitUnder carriage unit Hoist and loading assembly: It is used for hoisting theHoist and loading assembly: It is used for hoisting thedipper and loading the material into predetermineddipper and loading the material into predeterminedplace.place. It essentially consists of rigid boom and dipper stickIt essentially consists of rigid boom and dipper stickwhich is strongly built to withstand impact loading whilewhich is strongly built to withstand impact loading whileexcavation. To operate shovel in favorable conditionexcavation. To operate shovel in favorable conditioni.e. economically, it will be necessary to reduce thei.e. economically, it will be necessary to reduce thedepth of penetration of dipper face.depth of penetration of dipper face.
  • 5. 05/01/1305/01/13 55POWER SHOVELSPOWER SHOVELS The general operation of a hydraulically controlledThe general operation of a hydraulically controlledshovel differ fromshovel differ from thosethose of a cable-controlled shovelof a cable-controlled shovelprimarily in that the operator forces are produced byprimarily in that the operator forces are produced bypistons instead of by cables.pistons instead of by cables.Hence, it is clear that the applications of powerHence, it is clear that the applications of powershovel areshovel are1) To excavate the soils of all types except rocks1) To excavate the soils of all types except rockswithout prior loosening.without prior loosening.2) To collect and dump the material.2) To collect and dump the material.3) To load the excavated material into dump trucks,3) To load the excavated material into dump trucks,conveyer belts etc.conveyer belts etc.
  • 6. 05/01/1305/01/13 66SCRAPERSSCRAPERS
  • 7. 05/01/1305/01/13 77SCRAPERSSCRAPERS Scrapers are the result of a compromise between theScrapers are the result of a compromise between thebest loading and the best hauling machines.best loading and the best hauling machines. Scrapers are used to scrap the ground, load itScrapers are used to scrap the ground, load itsimultaneously, then transport it over a distance, dump atsimultaneously, then transport it over a distance, dump atthe desired place and then spread or layered.the desired place and then spread or layered. The ability of these machines to deposit their loads inThe ability of these machines to deposit their loads inuniformly thick layer will facilitate the succeedinguniformly thick layer will facilitate the succeedingspreading operationspreading operation On the return trips to borrow pits the cutting blades ofOn the return trips to borrow pits the cutting blades ofscrapers may be lowered enough to remove high spots,scrapers may be lowered enough to remove high spots,thereby assisting in maintaining the haul roads.thereby assisting in maintaining the haul roads. Thus, scrapers are designed to dig, load, haul, dump andThus, scrapers are designed to dig, load, haul, dump andspread. Therefore sometimes it is called “Carryall.spread. Therefore sometimes it is called “Carryall.
  • 8. 05/01/1305/01/13 88SCRAPERSSCRAPERS It essentially consists of a large scoop provided withIt essentially consists of a large scoop provided withcutting edge. The scoop is in the form of bucket on hollowcutting edge. The scoop is in the form of bucket on hollowcontainer, which is known as bowl or body.container, which is known as bowl or body. The scoop can excavate, transport and dump theThe scoop can excavate, transport and dump thematerial wherever required.material wherever required. The cutting edge of scoop does the excavate work andThe cutting edge of scoop does the excavate work andthe excavated material goes on collecting in howl fromthe excavated material goes on collecting in howl fromthe front gate.the front gate. The material is transported to the site of dumping and isThe material is transported to the site of dumping and istaken out from the tailgate of the bowl. Then facilitate thetaken out from the tailgate of the bowl. Then facilitate thesucceeding spreading operations to required and uniformsucceeding spreading operations to required and uniformthick layer.thick layer.
  • 9. 05/01/1305/01/13 99Types of ScrapersTypes of ScrapersScrapers may be broadly classified intoScrapers may be broadly classified intotwo main categoriestwo main categories1) Crawler — tractor scraper1) Crawler — tractor scraper2) Wheel — tractor scraper.2) Wheel — tractor scraper.a) Single — enginea) Single — engineb) Twin — engineb) Twin — enginec) Two — bowl tandemc) Two — bowl tandemd) Elevating Scrapers.d) Elevating Scrapers.
  • 10. 05/01/1305/01/13 1010DUMPERSDUMPERS
  • 11. 05/01/1305/01/13 1111DUMPERSDUMPERS Dumper is also known as Dump truck. The motor vehicleDumper is also known as Dump truck. The motor vehiclewhich is specially designed & constructed for carryingwhich is specially designed & constructed for carryingthe heavy loads under various operations conditions canthe heavy loads under various operations conditions canbe called as Dumpers.be called as Dumpers. These are meant for carrying rocks, coal, minerals,These are meant for carrying rocks, coal, minerals,aggregate and other materials in construction works.aggregate and other materials in construction works. Dumper may be ON road Vehicle or OFF road vehicle.Dumper may be ON road Vehicle or OFF road vehicle. ON road Dumpers generally used in normal roads suchON road Dumpers generally used in normal roads suchas in road construction, while OFF road means, vehicleas in road construction, while OFF road means, vehicleis used apart from good words, i.e. in terrains like in damis used apart from good words, i.e. in terrains like in damconstruction mines etc.construction mines etc.
  • 12. 05/01/1305/01/13 1212DUMPERSDUMPERS The constructional features of Dumper is similarThe constructional features of Dumper is similarto that heady duty truck, except a high strengthto that heady duty truck, except a high strengthcontainer or trolley is mounted at back side ofcontainer or trolley is mounted at back side ofthe Cabin and Hydraulic assisted load raisingthe Cabin and Hydraulic assisted load raisingand lowering facility is provided for dumpingand lowering facility is provided for dumpingmaterial in the trolley.material in the trolley. Some dumpers may have 2 hydraulic cylindersSome dumpers may have 2 hydraulic cylindersand the size of rear wheel and number of rearand the size of rear wheel and number of rearaxles may vary with load carrying capacity andaxles may vary with load carrying capacity andmode of operations.mode of operations.
  • 13. 05/01/1305/01/13 1313DUMPERSDUMPERS Suspension at front is of rigid elliptical type and at rearSuspension at front is of rigid elliptical type and at rearheavy duty leaf springs are provided to absorb highheavy duty leaf springs are provided to absorb highimpact loading under severe operating conditions.impact loading under severe operating conditions. Container for dumper is specially constructed toContainer for dumper is specially constructed towithstand ill handlings. Heavy duty air cleaner, filter,withstand ill handlings. Heavy duty air cleaner, filter,share proof mountings of all instruments, dust proofshare proof mountings of all instruments, dust proofelectrical systems and cushion mountings for radiatorelectrical systems and cushion mountings for radiatormay present in some dump trucks.may present in some dump trucks. Dumpers play important vole in dam construction, roadDumpers play important vole in dam construction, roadmaking, mining etc. for carrying materials and dumpingmaking, mining etc. for carrying materials and dumpingat required place quickly and conveniently.at required place quickly and conveniently.
  • 14. 05/01/1305/01/13 1414AnyQuestions?