Unlock instant, AI-driven research and patent intelligence for your innovation.

Bearing inspection device

A technology for inspection devices and bearings, which is applied in the direction of measuring devices, mechanical bearing tests, machine/structural parts tests, etc., can solve problems such as unreliable inspection of bearing status, and achieve reliable detection results

Active Publication Date: 2020-12-22
HITACHI BUILDING SYST CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, sometimes it is not possible to reliably check the condition of the bearing even with the measurement data obtained from the AE sensor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bearing inspection device
  • Bearing inspection device
  • Bearing inspection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Hereinafter, an embodiment will be described based on the drawings.

[0020] (Example)

[0021] figure 1 It is a circuit configuration diagram showing a bearing inspection device according to an embodiment of the present invention. exist figure 1 Among them, the bearing inspection device has magnetic sensors 10, 12, vibration sensors 14, coils 16, 18, temperature sensors 11, sound sensors (microphones) 13, resistors 20, 22, amplifiers 24, 26, differential amplifiers 28, amplifiers 30 , 31, 32, 33, an analog-to-digital converter (A / D converter) 34, a digital-to-analog converter (D / A converter) 36, and a computer 38. The computer 38 is constituted by, for example, a computer including a CPU (Central Processing Unit), a memory, an input / output interface, a display device (liquid crystal display), an input device (mouse, keyboard), and the like. The CPU executes various arithmetic processing and determination processing based on various programs stored in the memory, su...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

To inspect securely the condition of a bearing by at least detecting a change of magnetism generated from the bearing.SOLUTION: Included are: a vibration sensor that detects vibration of a bearing; a plurality of magnetic sensors that detect magnetism generated from the bearing; and a determination unit that determines a condition of the bearing based on an output signal of the vibration sensor and an output signal of each magnetic sensor. The determination unit performs a first determination of whether a first value obtained from an output signal of the vibration sensor is within the range of a first reference value and a second determination of whether a second value obtained from an output signal of each magnetic sensor is within the range of a second reference value, and determines at least the presence or absence of normality of the bearing from the result of the first determination and the result of the second determination.SELECTED DRAWING: Figure 1

Description

technical field [0001] The present invention relates to a bearing inspection device for inspecting bearings. Background technique [0002] A bearing that rotatably supports a rotating device is a device for smoothly rotating the rotating device. When a bearing fails, it may cause the operation of rotating equipment to stop. Therefore, maintenance work is performed to prevent deterioration of the bearing. As a technique for judging the state of a bearing, for example, Patent Document 1 discloses that "a bearing state monitoring device 1 includes an AE sensor 10 mounted on a bearing 3, a detection processing unit 30, an amplitude distribution calculation unit 32, a reference waveform generation unit 33, and Determination section 22. The detection processing section 30 performs detection processing on the signal from the AE sensor 10 to calculate the detection waveform. The amplitude distribution calculation section 32 calculates the amplitude distribution based on the detect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04G01M13/045
Inventor 神鸟明彦沟口崇子小平法美大西友治松本俊昭马场理香
Owner HITACHI BUILDING SYST CO LTD