Seismic Viscous Fluid Damper, Bridge Damper, Building Seismic Damper

• Customization: Available
• Material: Metal
• Shock Absorption Level: High Performance
• Work Temperature: Normal Temperature
• Position: Lower Structure
• Working Method: Straight Trip
• Rod Diameter: 100-300mm
• Bore Diameter: 200-400mm
• Stroke: 3000-6000mm
• Structure: Piston Type
• Quality Standard: International Standards
• Feature: Strong Energy Consumption Capacity
• Application: Seismic Isolation
• Transport Package: by Plywood Case
• Specification: Steel
• Trademark: YIZHUO
• Origin: Hebei, China
• Production Capacity: 10000PCS/Year
• Package Size: 1000.00cm * 300.00cm * 300.00cm
• Package Gross Weight: 400.000kg

Product Description

 

    Damping technology has been widely used in structural engineering such as buildings and bridges since the 1970s. Dampers play an important role in vibration reduction, improving structural stability, and enhancing acoustic environment through their unique energy dissipation mechanism, and are essential key devices in the engineering field.

 

Basic principles of dampers
    A damper is a device that reduces or eliminates vibration by applying a force opposite to the direction of vibration (i.e. damping force). The core principle is to convert vibration energy into thermal energy or other forms of energy, thereby gradually reducing the amplitude of vibration until it stops. Damping force is usually proportional to the speed of motion of the vibration system, and this energy dissipation mechanism is the key to achieving damping effect of dampers. 

    The viscous damper is composed of a cylinder, a piston, viscous fluid, and a guide rod. The cylinder is filled with viscous fluid, and the piston can move back and forth in the cylinder. There are appropriate small holes on the piston or gaps between the piston and the cylinder. When the structure deforms and causes relative motion between the cylinder and piston, it forces viscous fluid to flow through small holes or gaps, thereby generating damping force and dissipating vibration energy through viscous energy dissipation, achieving the purpose of shock absorption.

Maintenance frequency:
    The maintenance frequency of viscous dampers depends on their usage scenarios and design lifespan. Generally speaking, viscous dampers used in construction should undergo an initial inspection after one year of installation, followed by regular inspections every three, five, ten, and ten years after completion. If encountering disasters such as strong earthquakes, strong winds, fires, etc., timely inspections should be carried out. In addition, if the viscous damper is installed in harsh environmental conditions such as exposure to sunlight, rain, or immersion in water, personnel should be arranged to conduct regular (one year) inspections and maintenance.

Maintenance method:
    The maintenance method of viscous dampers mainly includes the following points:
1. Check if the damping medium leaks.
2. Clean the uncoated areas on the surface of the main body.
3. Regularly apply paint and rust prevention treatment to steel components.
4. Add lubricating grease to the pin shaft connection and clean the dirt in a timely manner.
5. Measure the distance between the center of the damper and record it. If it exceeds the allowable range, it should be corrected in a timely manner.
6. Check if there is any gap between the damper and the building connection.
 
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