HOISTING AND EARTHWORK EQUIPMENT
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Transcript of HOISTING AND EARTHWORK EQUIPMENT
A PRESENTATION ON
HOISTING EQUIPMENT- EARTH WORK EQUIPMENT
BY B.MAHESHBABU
CONTENTS :- HOISTING EQUIPMENT HOISTS-CRANES TRACTORS SCRAPERS DRAGLINES CLAM-SHELL BUCKETS
INTRO Hoisting is the lifting a weight from
one location and moving it to another location which is at a reasonable distance.
Big projects such as dams,industrial builindgs
Require hoisting equipment, which includes jacks,winches,chain hoists and cranes
HOISTING JACK
HOISTING WINCH MECHANISM
CRANES CRANE IS THE ONLY SINGLE MACHINE
WHICH IS SINGLE PIECE CAPABLE OF PROVIDING THREE DIMENSIONAL (360 degree) MOVEMENT OF WEIGHT IS CALLED A CRANE
TYPES STATIONARY OR DERRICK CRANES MOBILE CRANES OVERHEAD OR GANTRY CRANES TOWER CRANES
DERRICK CRANE
MAJOR PARTS
DERRICK CRANE CONSISTS OF MAJOR PARTS LIKE CRAWLER,MAST,SUPERSTRUCTURE,COUNTERWEIGHT,JIB,PULLEY
ELECTRICALLY OPERATED,DISEIL OPERATED, DIESIEL-ELECTRICAL OPERATED
THE BOOM CAN REVOLVE 360 Degrees THIS CRANE IS USED FOR HEAVY LOADS
UPTO 200 TONS
APPLICATIONS A DERRICK CRANES MAY BE USED ON A
WIDE RANGE OF WORKS INDUSTRIAL BUILDINGS CONSTRUCTION OF HIGH RISE
BUILDINGS ERECTION OF STEEL AND INDUSTRIAL
PLANTS HANDLING TIMBER HOISTING WORKS AT SHIP YARDS LOADING AND UNLOADING AT
SHIPYARDS CARGOS AT PORTS
MOBILE CRANES
CRAWLER TYPE MOBILE CRANE
TYPES CRAWLER TYRE TYPE ROUGH TERRAIN
THESE CRANES ARE MOUNTED ON MOBILE UNITS WHICH IS EITHER TYRE TYPE OR CRAWLER TYPE
TRUCK CRANES HAVE HIGH MOBILITY WHILE THE CRAWLER MOUNTED CRANES MOVE SLOWLY
CRAWLER MOUNTED CRANES ARE CAPABLE OF MOVING ON ROUGH TERRAIN
APPLICATIONS WHEEL TYPER CRANES USED FOR
LIFTING LOW LOAD CAPCITY MATERIALS USED TO LIFT THE CONCRETE GIRDERS,
LIGHT STEEL AND WOOD MATERIALS WORKING AND LIFTING MATERIALS AT
DEEP VALLY AND HIGH RISE BUILIDINGS LIFTING VEHICLES AT ACCIDENT AREAS
AND CLEARING THE VECHILCES IN JAMMED AREAS
LIFTING LIGHT WEIGHT SLEEPERS IN RAILWAYS
CRAWLER TYPE USED AT ROUGH AND WET TERRAINS FOR THE SAME PURPOSES ABOVE
GANTRY CRANES
PARTS :-
THESE TYPE CRANES CONSITS OF TWO MAJOR PARTS : BRIDGE AND CRAB
THE BRIDGE CONSISTS OF TWO MAIN GIRDERS AT THEIR END TO END AND CAPABLE OF MOVING ON GANTRY RAILS
THE CRAB CONSISTS OF THE HOISTING GEAR MOUNTED ON FRAME
FREE OF MOVING IN ANY DIRECTION NO OBSTACLES IN LIFTING LIMITED TO CERTAIN HEIGHT
APPLICATIONS THESE CRANES ARE USED FOR
HANDLING LOADS OVER A LONG RECATANGULAR AREA SUCH AS IN FACORIES AND WORKSHOPS TO MOVE MACHINES AND OTHER LOADS IN ANY DIRECTION
THESE CRANES CONSIST OF HOISTING MECHANISM MOUNTED ON A CARRIAGE
CAPICITY 0.99 TO 455 Metric tonnes LARGE SEVICE AREA FREEDOM FROM FLOOR AREA
WIDLEY USED IN ERECTION ,FOUNDRY, STEEL PLANTS, STORAGE YARDS
TOWER CRANES
IN APPEARNCE MOST OF TOWER CRANES LOOK ALIKE BUT THEY ARE NOT SAME TYPE
VARIOUS TYPES OF TOWER CRANES ARE AVAILABLE IN THE MARKET AND IT IS IMPORTANT TO CHOOSE THE RIGHT TOWER CRANE FOR A PROJECT.
THE TOWER CRANES HAVE MORE ADAVANTAGES THAN CONVENTIONAL CRANES
THE LIFTING CAPACITY IS ONE OF THE IMPORTANT SLECTION PARAMETER BESIDES LENGTH OF RADIUS,MAXIMUM HOOK HEIGHT ABVOVE GROUND
APPLICATIONS THE USE OF TOWER CRANE HAS
BECOME PROMINENT WITH MEDIUM TO HIGH RISE CONSTRUCTIONS
BRIDGES ,DAMS, TOWERS(COMMUNICATION)
TOWER CRANES CAN BE FIXED ON RAILS ONLY
EXCELLENT BEARING OF LOAD AND ITS SURROUNDINGS AT ALL TIMES
TRACTORS MULTI-PURPOSE MACHINES USED
MAINLY PULLING AND PUSHING OTHER EQUIPMENTS
TRACTORS MAYBLE CLASSIFED INTO TWO
CRAWLER TYPE WHEEL TYPE
TYPES CRAWLER TYPE : USED TO MOVE
BULLDOZERS,SCRAPERS
THE CRAWLER HAS A CHAIN BY WHICH THESE TRACTORS CAN BE VERY EFFECTIVE EVEN IN THE CASE OF LOOSE OR MUDDY SOILS. THE SPEED OF THIS TYPE DOSE NOT EXCEED 12 KMPH NORMALLY.
WHEEL TYPE :THE ENGINE IS MOUNTED ON FOUR WHEELS. THE MAIN ADVANTAGE IS HIGHER SPEED, SOMETIMES EXCEEDING 50 KMPH IT IS USED FOR LONG-DISTANCE HAULING AND GOOD ROADS
COMPARISION
CRAWLER TYPE
WHEEL TYPE
SCRAPERS
SCRAPERS UNIQUE MACHINE FOR DIGGING AND LONG-
DISTANCE HAULING OF PLOUGH ABLE MATERIALS.
SELF-OPERATING MACHINE A WHEEL TRACTOR-SCRAPER IS A PIECE
OF HEAVY EQUIPMENT USED FOR EARTHMOVING
IT IS NOT DEPENDENT ON OTHER EQUIPMENT. WHEELS OF MACHINE CAUSE SOME
COMPACTION THE BASIC PARTS OF SCRAPERS ARE THE
BOWL, APRON AND TAIL GATE OR EJECTOR
APPLICATION USED FOR EARTH MOVING TRIMMING THE SMALL EARTH CUTTINGS GRADING AND SMALL COMPACTION FOR
LARGE HAULS
DRAGLINES
THE DRAG LINE IS SO NAME BECAUSE OF ITS PROMINENT OPERATION OF DRAGGING THE BUCKET AGAINST THE MATERIAL TO BE DUG
UNLIKE THE SHOVEL, IT HAS A LONG LIGHT CRANE BOOM AND THE BUCKET IS LOOSELY ATTACHED TO THE BOOM THROUGH CABLES
BECAUSE OF THIS CONSTRUCTION, A DRAGLINE CAN DIG AND DUMP OVER LARGER DISTANCES THAN A SHOVEL CAN DO
DRAG LINES ARE USEFUL FOR DIGGING BELOW ITS TRACK LEVEL AND HANDLING SOFTER MATERIALS.
THE BASIC PARTS OF A DRAG LINE INCLUDING THE BOOM, HOIST CABLE, DRAG CABLE, HOIST CHAIN, DRAG CHAIN AND BUCKET.
APPLICATION IT IS THE MOST SUITABLE MACHINE FOR
DRAGGING SOFTER MATERIAL AND BELOW ITS TRACK LEVEL
IT IS VERY USEFUL FOR EXCAVATING TRENCHES WHEN THE SIDES ARE PERMITTED TO ESTABLISH THEIR ANGLE OF REPOSE WITHOUT SHORING
IT IS MOSTLY USED IN THE EXCAVATION FOR CANALS AND DEPOSITING ON THE EMBANKMENT WITHOUT HAULING UNITS
CLAM SHELL BUCKET
THIS IS SO NAMED DUE TO RESEMBLANCE OF ITS BUCKET TO A CLAM WHICH IS LIKE A SHELL-FISH WITH HINGED DOUBLE SHELL
THE FRONT END IS ESSENTIALLY A CRANE BOOM WITH A SPECIALLY DESIGNED BUCKET LOOSELY ATTACHED AT THE END THROUGH CABLES AS IN A DRAG LINE.
THE CAPACITY OF A CLAM SHELL BUCKET IS USUALLY GIVEN IN CUBIC METERS
THE BASIC PARTS OF CLAM SHELL BUCKET ARE THE CLOSING LINE, HOIST LINE, SHEAVES, BRACKETS, TAGLINE, SHELL AND HINGE.
USED FOR HANDLING LOOSE MATERIAL SUCH AS CRUSHED STONE, SAND, GRAVEL, COAL ETC.
MAIN FEATURE IS VERTICAL LIFTING OF MATERIAL FROM ONE LOCATION TO ANOTHER.
MAIN FEATURE IS VERTICAL LIFTING OF MATERIAL FROM ONE LOCATION TO ANOTHER.
THANK YOU