JB/T 8561-1997 JB/T 8561-1997 Technical requirements for acceleration type vibration meter for rolling bearings JB/T8561-1997 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 8561-1997
Technical Conditions for Acceleration Type Vibrometer for Rolling Bearings
1997-04-15 Issued
Ministry of Machinery Industry of the People's Republic of China
1908-01-Implementation
JB/I8561-1997
This international standard is formulated for the first time. The content of this standard is proposed and submitted by the National Technical Committee for Standardization of Rolling Bearings. The draft of this standard shall be: Luoyang Axle Research Institute, Daxing Instrument". The main authors of this standard: Xie Tian, ​​Yue Xiaozhuo, Han Qihua, Ni Kao, Mi Kongsu, Shen Dian and other authors. Product scope
Machinery industry standard of the People's Republic of China
Acceleration type measuring instrument for rolling bearings
Technical conditions
This standard specifies the technical requirements and test methods for the acceleration measuring instrument for rolling bearings with an inner diameter of ~12cm. 2. Referenced standards
The clauses contained in the following standards are referenced in this standard and constitute the clauses of this standard. When you start this version, the versions shown are all valid. All marks are slightly revised. The new versions of the products marked in this version may be JB5307.-91 Rolling shaft rate measuring instrument general technology parent generation 3 measurement principle || tt || The measured bearing and the corresponding central shaft driving device are placed in the outer periphery of the bearing to load a certain radial load. The internal and external hydraulic parts are driven by the driving stomach and rotated by the machine. The sensor transmits the specified positive force to the external vehicle and studies the degree of the bearing. The bearing diameter lifting speed signal is converted into a corresponding electrical signal, and the whole measurement is interrupted by the front large conductor of the large device. The listening and judging reception are carried out separately. The big book Tongji wave: after the operation of the operation circuit, the electric indication is published (the indication meter or the teaching method is to increase the effective degree of the small lifting and decreasing degree), the head agent Fuli washing medical "new release"
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machinery industry department 1997-04-15 standard
general selection
heavy power station
Sanjing city road
mobile power supply
1998-0101 implementation
4 technical requirements
4.1 sensor
use piezoelectric adding meter
4.1.1 do the degree
JB/T 8561-- 1997
The sensitivity of the speedometer should be within? ~24V/(; ·\. Its energy is not more than 2% in one year. 4..2 Thermal response characteristics
The speedometer ~cz rate thermal pressure internal test disk regular increase in the small value variable is less than 1 see 21.
4.1.3 Drag value continuity
In the working lock rate of the sensor, any number of brushes. Change the demolition and movement of the measured emotional benefits The difference between the output pressure and the internal pressure should not exceed 5%.
4.1.4 Sensor system
4.1 The mechanical device of the sensor should be installed with a resonance value of not less than 3006H. The difference between the harmonic value and the average value should not be too large.
4.1.4.2 The centerline of the acceleration sensor rod must be equal to the centerline of the nuclear rotation axis, and the two are within the same value: 4.143 Acceleration sensor rod change The thin-axis outer surface can be replaced by a car 5.~-1. The inner range of the core N is 4.2.1 The total frequency range of the measurement should comply with the block specified in Table 1. Table: Frequency range pressure 4.2.2 Frequency response characteristics The frequency response characteristics of the passband filter should fall within the shadow area of ​​​​Figure 3 4.2.3 Linearity of the sensor J8/T8561:1997 The lower limit of the wave reader is strictly set to provide an upper limit of the measurement rate 3 The linear error of the measurement value should not be greater than 1%. 4.2.4 Indication type When the power supply voltage is 320V=22V, the indication error of the measurement precision should not be greater than 0. 4.2.5 Conversion error The error of each amplifier is greater than 0. 4.2.6 Electrical point When the electrical noise of the measuring amplifier is at the maximum gain, it should be less than B. 4.2.7 The gain of the monitoring amplifier should not exceed 100%. 4.2.8 The accuracy of the self-adjusting vibration amplifier should not exceed 100%. 4.2.9 The measuring panel should be cooled by 20℃ (temperature < 4℃, humidity (0.3℃)%, power on for 48 hours. 4.3 Mechanical device of the measuring system 4.3 Main shaft speed specification 4.3.2 Drive or basic vibration specification ||Drive device state basic vibration table, 4.3.3 and main shaft assembly piece heart cat span
and main and auxiliary assembly heart color will be the same as the two parts and the end of the whole runout and heart tube table 2 is the specification 4.3.4 and axis point inner comfort matching heart shaft tolerance and axis ratio inner diameter matching heart shaft tolerance table 3: 3
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4.3.5 loading garbage
JD/T856J-1997
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The loading and transfer mode and the applied load shall comply with the standards of the competent department. 4.4 Working environment
No more than three jumps
Ambient temperature is 10~, the relative humidity should not be greater than the lower period, the measurement field should be far away from the field, the source power supply is 3VH.3 V.
4.5 The accelerometer must be calibrated weekly
The speed must be calibrated every year
4.6 The calibration error of the instrument system
The calibration error of the instrument system shall not be less than 0.5dF
4. For safety reasons, the instrument must be independently grounded to ensure that the instrument group is grounded. 4.8 Material and technical requirements for instrument parts The material and technical requirements of instrument parts shall comply with the requirements of the design letter. 4.9 The parts must be inspected by the manufacturer's quality department: 1. The equipment should be equipped with a quality certificate , gold certificate, the response curve of the instrument and the general instructions for use of the instrument. The calibration information should indicate: 1) manufacturer name:
2) instrument name and serial number;
3) instrument technical indicators and the name of the inspector and calibrator; <1> calibration period,
4.10 instrument appearance, packaging technical requirements instrument appearance packaging technical requirements should comply with JB 5307-1 3.2 and 5 chapters, 5 test items and methods
. Test environment
JB/T8561-1997
ambient temperature For the heart, the humidity should not be greater than, the place should be away from magnetic fields and electric fields to ensure that the device is not false.
5.2 Sensor explosion pulse characteristics
White standard power station and standard accelerometer or a closed-mouth power system, the sensor bears the load at a constant speed in the household power door test, and records the changes of the displayed value within the range of 0--0rH. S.3 Measure the overall device according to the critical rate characteristics
5.3.1 Linear rate characteristics
The signal is generated and the signal is released to the designated location. Accelerometer upgrade: change the signal rate, according to the indication of the measuring accelerometer, draw the non-linearity
5.3.2 Amplitude linearity
Output signal generator pushes the receiver into the center of the pressure signal, changes the amplitude of the signal within the measurement range, according to the measured value of the accelerometer, check the error, 5.3.3 Conversion error
Fix the accelerometer on the vibration table, put the measuring receiver in the appropriate gear, use the signal generator as the value of the signal, replace it with the recording, and then check the error within the range. 5.4 Basic dynamic device
After the power is on, the protective and marked bearings are not installed, and the range attenuation is increased to the appropriate gear, and the indication is evaluated as the dynamic range of the device.
5.5. Instrument system calibration
The accuracy of the instrument should be adjusted to the test requirements, and the instrument should be calibrated before calibration. The instrument should be tested at the standard test point.
6. Instrument calibration regulations
The instrument should be calibrated every time to ensure that it meets the requirements of the instrument calibration.
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