Shock absorber manufacturer Sizing Examples Typical Shock Absorber and Crane Applications

Overview

Crane A Per BufferPropelling Force Cranelbs.Propelling Force Trolleylbs. Weight of Cranelbs. Weight of Trolleylbs. Distance X

Front View Plan Views

Velocity of TrolleyTotal Weight of CraneWeight of TrolleyDistance XSpan ZRail XRail Y
min in.Distance X in.Distance Y Load
max Distance Y Load
min in.Distance Y
max in.Crane Velocityin./sec. Trolley Velocityin./sec. Application 1
Shock Absorber Sizing Examples Crane A against Solid Stop Crane B Per BufferPropelling Force Cranelbs.Propelling Force Trolleylbs. Weight of Cranelbs. Weight of Trolleylbs. Distance X Velocity:V
A r = V
A Impact weight per buffer:W

Crane A (W ) Crane B (W

D = W2
A min in.Distance X Application 2 in.Distance Y Crane A against Crane B
max Velocity:V

Crane B (W

)Crane A (W

min in.Distance Y
r = V
A + V
B V in.Crane Velocityin./sec. Trolley Velocityin./sec.
B max Impact weight per buffer:W
D = W
A •W
B ..
A

)

Trolley + W 2W
A B V
A Crane C Per BufferPropelling Force Cranelbs.Propelling Force Trolleylbs. Weight of Cranelbs. Weight of Trolleylbs. Distance X Application 3 Crane B against Crane C Velocity:V

Crane C (W

)

r = V
B + V
C V 2Impact weight per buffer:W
C D = W
B •W
C B

) Crane C (W

W
B + W
C min in.Distance X V in.Distance Y
B max min in.Distance Y Application 4 Crane C against Solid Stop with Buffer Velocity:Vr= V
max in.Crane Velocityin./sec. Trolley Velocityin./sec.
C 2Impact weight per buffer:W V
C

Please note:

Unless instructed otherwise, Enidine willalways calculate with:• 100% velocity v, and• 100% propelling force F

D = W
C C

)

Trolley Trolley TrolleyV
D

13

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