1、 Monitoring background and objectives

The power system of the cable car (including motor, gearbox, bearings, drive shaft, etc.) is prone to mechanical fatigue, component wear, and even shutdown due to abnormal vibration during long-term operation. Through real-time vibration monitoring, it is possible to:

Preventive maintenance: Early identification of abnormal vibrations to avoid sudden malfunctions.

Optimize operation: Analyze vibration data, adjust load or lubrication strategies.

Security guarantee: Ensure the safety of passengers and equipment, in compliance with industry standards (such as ISO 10816 vibration standard).

2、 System configuration plan

1. Sensor selection

Recommended models: 310A-20 (± 20g range) or 310A-80 (± 80g range)

Basis: The vibration amplitude of the cable car power system is usually low to medium frequency (<1kHz), and the 310A series wide frequency response (0.1-15kHz) covers typical fault characteristic frequencies (such as gear meshing and bearing defects).

Advantages: Metal welding seal (IP68) is suitable for outdoor high humidity and salt spray environments.

EMI shielding against electromagnetic interference from motors.

Resistance to impact (5000g) and instantaneous vibration.

2. Installation location and method

Key measuring point: Non drive end bearing seat of motor (axial/radial)

Gearbox input/output shaft bearings

Drive shaft support seat

Installation method: Threaded fixation (standard 1/4-28 bolt PM0011) ensures high stiffness coupling.

Magnetic seat (MB0001) assists in temporary diagnosis.

3. Supporting equipment

Component model function

Cable 16A-10-B (BNC connector) transmits signals to the acquisition device

Regulator IN-03 (3-channel) IEPE power supply+signal amplification

IN-SDG (8-channel) multi-channel synchronous sampling acquisition system

IN-91 portable analyzer for rapid on-site diagnosis

3、 Data Collection and Analysis

1. Parameter settings

Sampling frequency: ≥ 10kHz (covering a resonant frequency of 15kHz).

Monitoring indicators: Time domain: RMS value, peak value (monitoring sudden impact).

Frequency domain: FFT analysis (identifying characteristic frequencies of gears/bearings).

2. Alarm threshold

Reference ISO 10816-3 standard grading: Normal:<2.8mm/s (RMS)

Warning: 2.8-7.1mm/s

Danger:>7.1mm/s

3. Diagnostic Cases

Bearing failure: Harmonics appear in the frequency domain (such as BPFO/BPFI).

Gear wear: sideband modulation phenomenon.

4、 Advantages of the plan

High reliability: The 310A sensor is corrosion-resistant and impact resistant, suitable for harsh working conditions of cable cars.

Full frequency coverage: from low-speed shaft (<10Hz) to gear high-frequency (kHz level) without omission.

Flexible Expansion: Supports multi-channel synchronous monitoring, and can integrate multiple parameters such as temperature and noise in the future.

5、 Implementation suggestions

Initial stage: Install 4-6 measuring points (key parts of the motor and gearbox).

Long term: Establish a historical database and combine AI algorithms to predict remaining lifespan.