Polyurethane Shock Absorbing Pad—Applications in Industrial Equipment

With the development of urban construction, super-large urban complex projects and super high-rise projects are springing up, and industrial zones are proliferating throughout cities. The operation of large equipment units in these projects generates a significant amount of low-frequency noise and vibration, which can be very harmful to people and is already recognized worldwide as one of the seven major hazards.

● Challenges
During operation, technical equipment can cause vibrations in fixed components and machine assemblies. Structural noise and secondary airborne noise are also generated as a result. Vibrations, noise, and other negative health effects are consequences we want to avoid.

● Requirements for Vibration Solutions
On one hand, an effective vibration isolation system must be able to withstand both static and dynamic loads under normal operation. On the other hand, the supporting structure should maintain a soft characteristic under dynamic loads and possess a lower stiffness than other materials (such as rubber or cork) to filter out externally input high-frequency vibrations. Static and dynamic forces must be mitigated in both vertical and horizontal directions.

● Advantages of Vibrotec Company Solutions

The elastic supports made of Vibratec® polyurethane material effectively reduce vibration and noise whether installed within the machine or beneath it.
— The elastic supports are easy to install, require no maintenance, and can continue to function throughout the machine's entire service life.
— By customizing calculations and adjustments for the support structure, very low tuning frequencies can be achieved, enhancing the system's vibration reduction performance.
● Description of Vibrotec Solutions

Source Isolation (Active)
Elastic interlayers can reduce the strong dynamic forces generated by machinery. This lowers the continued transmission of disruptive vibrations, isolating the vibration source (such as stamping machines, compressors) from its surroundings.

Receiver Isolation (Passive)
Elastic support components can protect machines and sensitive components from the influence of non-isolated equipment. Machines such as measurement devices, servers, etc., can be isolated from the surrounding environment.

Working Principle of Vibratec® Polyurethane Vibration Pads
Vibratec® polyurethane elastic pad material integrates both elasticity and damping properties. Its operation is based on the principle of a single-mass spring system. During operation, technical equipment causes vibrations in fixed parts and machine components. This also generates structure-borne noise and secondary airborne noise. Vibration, noise, and some health-hazardous negative effects are undesirable to us.

On one hand, an effective vibration isolation system must be able to withstand static and dynamic loads during normal operation. On the other hand, the supporting structure should remain soft under dynamic loads and possess lower stiffness than other materials (such as rubber or cork) to filter high-frequency vibrations from external inputs. Static and dynamic forces need to be mitigated in both vertical and horizontal directions.

Advantages of Vibratec® Polyurethane Elastic Pads

— Maintenance-free
— High cost-effectiveness
— Customizable features to meet different engineering needs
— Tuning frequency can be reduced as low as 6 Hz
— Materials have good durability and a guaranteed service life, covering the entire lifespan of the equipment
— Maintains high efficiency even with low bases and minimal settlement (protects electrical and mechanical connections)
— Load range from 0.5 t/㎡ to 600 t/㎡ — can compensate for uneven surfaces
— Can be used as a spring, damper, or spring/damper combination
— Geometric shape can be individually adjusted (to suit on-site installation conditions)
— Elastically decoupled preloaded supports and screw joints can withstand tensile forces
— Vibration isolation pads can block vertical and horizontal vibrations under different external excitations
— The internal composition of the materials does not degrade, and their performance remains unchanged.

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