Vibration isolation damper in structures

1.Design based on customer needs 2.Stainless steel casing 3.Invention patents

Our company independently developed and produced JZN series vibration isolation dampers.Each performance index of  the product reaches technological level of congeneric  products home and abroad.

 

1. Features of vibration isolation damper 

a.  Simple appearance,symmetrical and compact structure,easy installation and small installation space; 

b.  Small resistance at a low speed of motion,less than 10% of nominal load; 

c.  High energy consuming efficiency up to over 90%; 

d. The lugs with ball bushing are installed on both ends of damper,favorable for installing under construction and swing as operating(±6°operating pendular angle allowable); 

e.  Hydraulic fluid uses stable,burning and aging resistant silicone oil;sealing element uses rubber materials having great compatibility with the fluid.

2.Principle formula:

F=C×Va,

F:Damping force(kN)

C:Damping coefficient(kN/(mm/s))

V:Velocity of piston(mm/s)

a:velocity exponent,designed and selected according to the engineering requirements,value is generally taken between 0.2~1.when a=1,it is linear damping. 

A selected range of velocity exponent a is 0.1~1,damper giving priority to earthquake resistance commonly selects a<0.4;damper to wind resistance selects a≥0.4.

3.Technical parameters

Vibration isolation damper in structures