The vibration absorber is a type of equipment that converts mechanical vibrational kinetic energy into heat energy, which is then absorbed by the high elastic deformation properties of the rubber material.
Its core functions include:
Energy dissipation: It consumes vibrational energy by utilizing viscous shear and elastic hysteresis effects.
Momentum isolation: It blocks the vibration transmission path, thereby reducing the risk of system resonance.
Buffer protection: It absorbs shock loads and extends the service life of the equipment.
Zhongmu Rubber is committed to developing both existing and new products, offering customers high-quality, high-performance isolation solutions.
1.Typical construct type comparison
| structured type |
structure characteristics |
Dynamic performance parameters |
application scenarios |
| Solid compression type |
Single rubber column (no reinforced layer) |
Scirrhosity ShoreA70-90 |
Low-frequency and large-amplitude industrial equipment |
| Fiber enhancement type |
Rubber matrix + aramid fiber woven mesh |
shear modulus≥15MPa |
Earthquake absorption of high-speed rail transit |
| Metal nested type |
Aluminum alloy shell + rubber lining |
radial rigidity ≥500N/mm |
Generator set vibration isolation |
| Multi-layer compound |
NBR base layer + EPDM damping layer + silicone surface layer |
thermal adaptability -50~+200ºC |
Semiconductor equipment precision vibration isolation |
2.Classical structure and its classification
| structure type |
operational principle |
typical parameter |
application scenarios |
| Compressed shock absorber |
The rubber column is deformed by the axial compression |
Scirrhosity60-90 ShoreA,compression ratio≥30% |
Car suspension, machine tool shock absorption |
| Cut-type shock absorber |
Rubber sheets produce shear deformation under shear sheets |
shear modulus≥10MPa,thickness2-5mm |
Electronic equipment, building vibration isolation |
| Compound shock absorber |
Rubber + spring / hydraulic pressure works together |
Nonlinear stiffness characteristics, with adjustable damping |
Heavy machinery, high-speed rail track |
| Damage liner |
Thin-walled rubber sleeve covers the rotating shaft |
radial rigidity 50-500N/mm,friction(al) coefficient 0.1-0.3 |
Rotary shaft frame vibration control |
3.Material type selection system
| Rubber type |
dynamic modulus (MPa) |
temperature range(-40ºC~+150ºC) |
oil resistivity (70#) |
Typical application |
| NBR |
2-5 |
-40ºC~+120ºC |
Volume change rate<10% |
Automobile shock absorber, hydraulic cylinder bushing |
| EPDM |
3-8 |
-50ºC~+180ºC |
Volume change rate<5% |
Building vibration isolation cushion, wind power sealing |
| SBR |
2-4 |
-20ºC~+100ºC |
Volume change rate<15% |
Industrial floor damping pad |
| IIR |
1-3 |
-40ºC~+80ºC |
Volume change<8% |
Precision instrument vibration absorber |
4.International standard and test range
| criterion |
test project |
technical requirement |
| ISO 9001 |
quality management system |
Whole-process traceability |
| GB/T 10179 |
Experimental method of rubber shock absorber |
The deformation was <20% after 10 ^ 6 cycles |
| ASTM D3452 |
Schematic drawing test |
Rehome rate is> 70% |
| IEC 60068-2-6 |
Environmental experiments |
-40ºC ~ + 85ºC cycle aging |
5.Failure mode and structural improvements
| failure mode |
analysis of causes |
Improve the plan |
| surface checking |
UV aging (> 2000h exposure) |
Add UV absorber (carbon black N330) |
| The central hole collapsed |
Localized overload (> 150% rated load) |
Set the safety factor (≥2.5) |
| Damage recession |
Liquid erosion (ASTM D471 test) |
HNBR oil resistant rubber |
| Install stress cracking |
Taper fitting (H7 / p6) |
Add flexible spacer (Shaw 30-50A) |
6.Typical application scenarios and product types
| device type |
Application site |
vibration performance |
Type of shock absorber |
Type of shock absorber |
| excavator |
Rotary turning platform and walking mechanism |
Low-frequency (2-10Hz) axial vibration |
Compressed shock absorber |
Hardness of Shore A 70-90, compression rate of 30% |
| crane |
Hanging arm, balance beam |
Intermediate frequency (10-50Hz) torsional vibration |
Cut-type shock absorber |
Shear modulus of 15MPa, 5-8mm in thickness |
crane Hanging arm, balance beam Intermediate frequency (10-50Hz) torsional vibration Cut-type shock absorber Shear modulus of 15MPa, 5-8mm in thickness
loader Hanging arm, balance beam High-frequency (50-200Hz) random vibration Compound shock absorber Rubber + metal skeleton, with a damping ratio of ζ =0.8-0.9
road roller Shbrator, self-walking wheel Impact load (5-10ms pulse) hydraulic buffer Ababsorbed energy 200 kJ with response time <50ms
shield tunneling machine Spindle drive, pipe segment assembly machine Multi-axial synchronous vibration (axial + radial) 3 D shock absorption module Flexible connection design, torsional torque 500 N·m
7.Manufacturing Process Flow
1. Material Premixing:
Hot Feeding System: Temperature control ± 1°C (to ensure material uniformity)
Fiber Dispersion: 95% (detected by a laser particle size analyzer)
2. Molding Process:
Compression Molding: Mold temperature is set at 60°C, pressure at 15MPa, with a pressure holding time of 30 minutes
Injection Molding: Screw speed ranges from 50 to 100 rpm, injection temperature from 80 to 120°C
Vacuum Vulcanization: Pressure at 0.95MPa, temperature at 150°C, duration of 60 minutes
3. Reprocessing:
Surface Treatment: Spray polyurethane anti-fouling coating (0.2mm thickness)
Performance Optimization: Microwave vulcanization (40% efficiency improvement, temperature variance ± 2°C)
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