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Method and device for monitoring status of mechanical equipment and abnormality diagnosing device

A technology for abnormal diagnosis and mechanical equipment, applied in mechanical equipment, measuring devices, transportation and packaging, etc., can solve the problems of reduced detection accuracy, difficulty in high-precision detection and judgment, and maintenance and management that take a lot of time and money

Inactive Publication Date: 2005-10-26
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are problems in that a lot of time and money are spent on maintenance management, and maintenance efficiency is not satisfactory
[0006] However, there is still the following problem in the case of installing the sensor in the vehicle body: due to the distance between the bearing and the sensor, the S / N ratio (signal-to-noise ratio) of the detection signal of the sensor deteriorates, making it difficult to perform detection and judgment with high accuracy.
However, for a large personal computer with poor resistance to external vibration, etc., it has to be as far away as possible from the source of vibration, that is, the bearing device, etc.
As a result, if the sensor and the personal computer are separated by a predetermined distance or more, there may be problems such as a decrease in detection accuracy due to the influence of external noise on the information transmission path between the sensor and the personal computer.

Method used

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  • Method and device for monitoring status of mechanical equipment and abnormality diagnosing device
  • Method and device for monitoring status of mechanical equipment and abnormality diagnosing device
  • Method and device for monitoring status of mechanical equipment and abnormality diagnosing device

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no. 1 approach

[0224] FIG. 1 shows an abnormality diagnosis device for a railway vehicle according to a first embodiment of the present invention. The abnormality diagnosis device 1 includes: a detection processing unit 20 having a sensor unit 22 provided on each row of each rolling bearing 21 and outputting the state of each row as an electrical signal; An arithmetic processing unit 30 for judging a state such as a defect or an abnormality of the railway vehicle equipment 10 ; and a control processing unit 40 for controlling and outputting a judgment result of the arithmetic processing unit 30 .

[0225] The abnormality diagnosis device 1 is a device for detecting abnormalities caused by wear and damage of a plurality of roller bearings 21 in a bearing device supporting an axle of a railway vehicle. Each rolling bearing 21 comprises: respectively embedded in the outer wheel 23 of one side of the vehicle body as a stationary part; the inner wheel 24 embedded on the axle and rotates together ...

no. 2 approach

[0327] Next, an abnormality diagnosis device for machinery equipment according to a second embodiment of the present invention will be described in detail. Among them, the same reference numerals are assigned to the same parts as those in the first embodiment, and overlapping descriptions are omitted or summarized.

[0328] As shown in FIG. 27 , in this embodiment, instead of the detection processing unit 20 , a detection process composed of the detection units 51 a , 51 b , and 51 c of the sensor unit 52 wirelessly communicating with the arithmetic processing unit 30 as shown in FIG. 26 is used. Section 51. The sensor units 52 are attached to the outer ring 23 of the respective bearings 21 in each of the detection units 51 a , 51 b , and 51 c . This sensor unit 52 is equipped with a temperature detection element 52b, a rotation detection element 52c, a vibration detection element 52d, and a transmitter 52h for wireless communication inside a sensor case 52a. Amplifiers for ...

no. 3 approach

[0332] 28 is a block diagram showing a schematic configuration of an abnormality diagnosis device for machinery equipment according to a third embodiment of the present invention. The abnormality diagnosis device 60 of the rotating body of the present embodiment is an improvement of the sensor unit equipped on the sensor bearing 21 supporting the axle in the abnormality diagnosis device 1 of the first embodiment, and the output signal of the sensor unit is determined. The arrangement of the arithmetic processing unit 30 and the control processing unit 40 for processing has also been improved.

[0333] Since the specific structures and processing methods of the calculation processing unit 30 and the control processing unit 40 are the same as those of the first embodiment, the same reference numerals as those in the first embodiment are attached to the common structures, and those of the calculation processing unit 30 and control processing are omitted. Section 40 related instru...

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Abstract

An abnormality-diagnosing device is used to diagnose if a bearing device used on the axle of a railway vehicle is normal. The abnormality-diagnosing device comprises a detection processing part, an operation processing part, a result output part and a control processing part, wherein, the detection processing part outputs the signal generated by the bearing device, which is regarded as an electric signal, the operation processing part conducts an abnormality diagnosis on the bearing device according to the output of the detection processing part, the result output part outputs the judgement result of the operation processing part, and according to the judgement result, the control processing part returns a control signal to the control system of the railway vehicle.

Description

technical field [0001] The present invention relates to a state monitoring method and device for mechanical equipment and an abnormality diagnosis device. A state monitoring method and device and an abnormality diagnosis device for monitoring abnormalities and other states of mechanical equipment without disassembling the mechanical equipment, such as railway vehicle equipment, working machinery, windmills, reducers, and electric motors. Background technique [0002] Conventionally, machinery and equipment such as rolling stock equipment, machine tools, and windmills required periodic dismantling and visual inspections to prevent abnormalities due to wear or damage of rotating bodies and sliding parts. This dismantling visual inspection refers to dismantling and removing the rotating body and sliding parts from the mechanical equipment after the device has been used for a certain period of time, and then visually confirming the degree of wear of each component by skilled pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/00B61K9/04F16C19/52F16C41/00G01D21/00G01H17/00G01M13/04G01M17/08G01M99/00
Inventor 宫坂孝范荒牧宏敏武藤泰之佐原淳太郎
Owner NSK LTD
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