05-10-2016, 11:08 AM
1457811718-designcalcltn.docx (Size: 18.83 KB / Downloads: 5)
SPECIFICATION OF PARTS
BASE:
Material: Mild steel
Size:
Length: 650 mm
Width: 300 mm
Fabrication process: Welding
SCISSOR LEGS:
Material: Mild steel
Type: Flat plate
Size: 360×25×5 in mm
Fabrication process: Riveted joints
Extended position: 420 mm
Retracted position: 200 mm
PLATFORM:
Material: Mild steel
Type: L angle [25×5]
Size:
Length: 400 mm
Width: 300 mm
Fabrication process: Welding
HYDRAULIC CYLINDER:
Material: Structural steel
Cylinder:
Bore :45 mm
Stroke length: 100 mm
Thickness: 2.5 mm
Piston: 44.5 mm
Piston seal:
Material: Poly urethane
Bore: 35 mm
Thickness: 5 mm
HYDRAULIC HOSE:
Material: Rubber
Size: Diameter: ¼ inch
Length: 500 mm
Capacity: 400 bar
GUIDING ROLLERS:
Material: Mild steel
Diameter = 16 mm
Length = 20 mm
Hole = 5.2 mm
DESIGN CALCULATIONS
DESIGN CALCULATIONS
HYDRAULIC CYLINDER:
Stroke length: 100 mm
Bore: 45 mm
Thickness: 2.5 mm
Area = π/4 × D2
= π/4×45×45
= 1590.43 mm2
Volume = Area × stroke length
= 1590.43 × 100
= 159043 mm3
In milliliter = 159 ml
Pressure = load/Area
= 20×9.81/1590.43
= 0.123 N/mm2