GB/T 36668.4-2020 in English
VALIDCondition monitoring and fault diagnostics of amusement device—Part 4:Vibration monitoring method
- Issued on:2020-03-06
- Implemented on:2020-03-06
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 36668.4-2020游乐设施状态监测与故障诊断 第4部分：振动监测方法》由TC250（全国索道与游乐设施标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
This standard establishes a complete technical system for vibration monitoring of rotating parts of amusement facilities, focusing on the installation requirements of accelerometers, vibration severity classification standards, and fault diagnosis procedures. The monitoring frequency band of 10Hz~3000Hz can cover most of the characteristic frequencies of mechanical faults.
Comparison of monitoring methods
| Monitoring stage | Sampling requirements | Analysis parameters | Typical fault characteristics |
|---|---|---|---|
| Start-up stage | ≥10 cycles | Time domain waveform | Bearing sticking |
| Operation stage | ≥2 times the highest frequency | FFT spectrum | Gear wear |
| Shutdown stage | 1Hz resolution | Trend analysis | Shaft misalignment |
Implementation points
Case: The vibration value of a large-scale Ferris wheel driving motor continued to rise from 0.45mm/s to 1.8mm/s. Through spectrum analysis, it was found that the 3rd harmonic was prominent, and the diagnosis was that the gearbox tooth surface was worn. After disassembly verification, it was consistent with the diagnosis conclusion.
The standard requires that the monitoring cycle be shortened when the vibration intensity of Class A equipment exceeds 1.12mm/s (Level III), which reflects the concept of preventive maintenance.
Technology Evolution Analysis
Compared with traditional inspection methods, this standard emphasizes:
- Multi-channel synchronous acquisition technology
- Dynamic range requirement above 65dB
- Full life cycle data tracking
Appendix B divides equipment into 4 categories according to power, among which the IV threshold of Class D (>150kW) reaches 18mm/s, reflecting the difference in vibration tolerance of high-power equipment.
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