Mechanical Vibration Test Bench

1 Scope of Application  

This standard applies to the center height of the shaft.630mmAbove, the rotation speed is150～3600r/minDirect large and medium-sized... Brushless Motor, Large AC Motor.  

This standard does not apply to vertical hydraulic generators or steam turbines.  

2 Measurement Value  

RPM600r/minMotors above this specification utilize the large root mean square (RMS) value of vibration speed.(mm/s)Indicate; at 600r/minOur motor utilizes displacement amplitude.(mm,Dual Value)Indicate.  

3 Measurement Instruments  

3.1 The vibration intensity measuring instruments should be calibrated by the national metrological department, and the entire measurement system should be checked before use. Various units(Including sensors, vibration intensity meters, recording and display instruments, etc.)Perform calibration to ascertain itsPlease provide the Chinese content you would like translated into American English.No content provided for translation. No Chinese content provided.  

3.2 Measurement of Revolution Speed600r/minAt the above motor's vibration intensity, the frequency of its vibration intensity measuring instrument Response Range10～1000HzOr above, the relative sensitivity within its frequency response range80HzNo Chinese content provided. Based on relative sensitivity, the relative sensitivity of other frequencies does not exceed+10%Or-20%。  

3.3 No Chinese content provided.600r/minWhen it comes to motor vibration intensity, low-frequency sensors and low-frequency vibration intensity should be employed. Diameter Measuring Instrument, ensuring measurement accuracy below±10%The requirements.  

3.4 The sensors must have a good contact with the points being measured, and ensure that the installation of the sensors does not affect the measured components. The vibration status.  

3.5 Vibration intensity measuring instruments and gauges should be periodically calibrated in accordance with national regulations.  

4 Motor Installation Method  

4.1 The motor to be measured must be rigidly mounted according to this standard. If the motor being measured is placed directly on a platform for measurement At the time, it is required that the installation platform and foundation be rigidly connected; if the motor being tested is placed in a square box(Padding boxes, padding blocks)Please provide the Chinese content to be translated. During measurement, the square box is required.(Pads for boxes, blocks)The platform, foundation, and infrastructure are rigidly interconnected.  

4.2 Installation Platform(Or square boxes, cushioned boxes, and cushion blocks)The base should not generate additional vibration or resonate with the motor. Test. Previously, vibration velocities in the horizontal or vertical direction were measured on the motor base foot or on the base close to the pedestal bearing. The root mean square (RMS) value does not exceed the RMS vibration speed measured along the same measurement direction on the adjacent bearing. No Chinese content provided. Please provide the news content to be translated.50%。