Task No: 1/2006

FLUID POWER

To design double acting hydraulic cylinder for the following data:

advancing force . . . . . . . . . . . . . . . . kN

rectracting force . . . . . . . . . . . . . . . . kN,

piston stroke . . . . . . . . . . . . . . . . . . . mm,

kind of fastening:

a

b

c

d

e

f

g

h

i

J

One should make:

1. geometric calculations (piston and piston rod diameter),

2. kinematics calculations at establishing that the piston speed isn't exceeding the 5 m/min,

3. select hydraulic pump at establishing that the fluid velocity pumped in pressure is equal 5 m/s and the fluid flowing out is equal 1,5 m/s,

4. endurance (strenght) calculations (in it buckling calculations),

5. choose sealing junctions (knots):

• piston seal . . . . . . . . . . . . . .

• rod seal in cylinder head (head end cap) . . . . . . . .

• remained seal O-ring type

6. braking piston calculations, geometrical design of the breaking . . . . . . . . .

7. wenting system (set) . . . ,wenting valve according with Polish Standards ……..

8. choose oil inlet/outlet seats,

9. rod end (thread, articulated joint),

10. choose the connection between the cylinder barrel (tuleja cylindryczna) with the heads

11. assembly drawing (min. A-2),

12. 2 workshop drawings

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