WO2016199846A1 - Unité de capteur, palier équipé d'un capteur et système de diagnostic d'anomalie - Google Patents

Unité de capteur, palier équipé d'un capteur et système de diagnostic d'anomalie Download PDF

Info

Publication number
WO2016199846A1
WO2016199846A1 PCT/JP2016/067200 JP2016067200W WO2016199846A1 WO 2016199846 A1 WO2016199846 A1 WO 2016199846A1 JP 2016067200 W JP2016067200 W JP 2016067200W WO 2016199846 A1 WO2016199846 A1 WO 2016199846A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
module
sensor unit
abnormality diagnosis
measurement object
Prior art date
Application number
PCT/JP2016/067200
Other languages
English (en)
Japanese (ja)
Inventor
柳沢　知之
稔 窪川
相澤　知之
邦彦 笹尾
Original Assignee
日本精工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015143072A external-priority patent/JP2017003555A/ja
Application filed by 日本精工株式会社 filed Critical 日本精工株式会社
Publication of WO2016199846A1 publication Critical patent/WO2016199846A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings

Definitions

  • the present invention relates to a sensor unit, a sensor-equipped bearing, and an abnormality diagnosis system.
  • Machine equipment such as vehicles, machine tools, and wind power generators are equipped with various devices such as rolling bearings, motors, and pumps. If wear or damage occurs due to long-term use of mechanical equipment, smooth rotation and sliding of various devices such as bearings will be hindered, and not only will abnormal noise be generated but also the life may be shortened. . For this reason, conventionally, after using a machine facility for a certain period, the presence or absence of abnormalities such as wear and damage of a bearing or the like has been inspected.
  • This inspection is performed by disassembling the part where the bearing of the mechanical equipment is incorporated, or the entire mechanical equipment, and damage and wear occurring in the bearing etc. are discovered by visual inspection of the operator. As a result of the inspection, if an abnormality such as wear or damage is found in the bearing or the like, the bearing or the like is replaced with a new one to prevent a malfunction or accident of the mechanical equipment.
  • the inspection method in which a part or the whole of the mechanical equipment is disassembled and visually checked by an operator, it is very difficult to remove the bearings from the mechanical equipment and to incorporate the bearings etc. that have been inspected again into the mechanical equipment. There is a problem that labor is required and maintenance cost of mechanical equipment increases.
  • an abnormality diagnosis device that performs abnormality diagnosis of various devices such as bearings in the actual operation state of mechanical equipment.
  • the abnormality of the rolling bearing is based on the effective value of the vibration waveform measured using the vibration sensor and the effective value of the AC component of the envelope waveform of the vibration waveform. Make a diagnosis. As a result, accurate abnormality diagnosis is realized.
  • Patent Document 1 discloses that a vibration sensor is fixed to a bearing, detects vibration of the bearing, and outputs the detected value to a data processing device.
  • a vibration sensor is fixed to a bearing, detects vibration of the bearing, and outputs the detected value to a data processing device.
  • the output method of the detection value from the vibration sensor to the data processing device and the power supply method to the vibration sensor is no specific description about the output method of the detection value from the vibration sensor to the data processing device and the power supply method to the vibration sensor.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a sensor unit, a sensor-equipped bearing, and an abnormality diagnosis system that can detect, transmit, and generate power with a compact configuration.
  • the above object of the present invention can be achieved by the following constitution.
  • a sensor module that detects ambient signals;
  • a wireless module for transmitting a signal detected by the sensor module as a wireless radio wave;
  • a power generation module for supplying power to the sensor module and the wireless module;
  • a housing for housing the sensor module, the wireless module, and the power generation module in one;
  • a sensor unit comprising: (2)
  • the housing has a male screw portion,
  • the sensor unit according to (1) or (2), wherein the radio wave from the radio module is transmitted only when abnormal data is detected by the sensor module.
  • An abnormality diagnosis system comprising: (7) comprising a relay device for receiving radio waves transmitted from the radio module;
  • FIG. 1 is a schematic diagram of an abnormality diagnosis system according to an embodiment. It is a figure for demonstrating the method to fix a sensor unit to an outer ring
  • the abnormality diagnosis system 1 of the present embodiment includes a rolling bearing 10 that is a measurement object incorporated in a mechanical facility 5, a sensor unit 20 installed in the rolling bearing 10, and a sensor unit 20. And an abnormality diagnosis device 30 for diagnosing abnormalities in the rolling bearing 10 and various devices (for example, the motor 41 and the pump 42) arranged around the rolling bearing 10 based on a signal output from the motor.
  • the rolling bearing 10 includes an outer ring 11 having an outer ring raceway surface 11a on an inner peripheral surface (a race ring which is a fixed ring), an inner ring 13 having an inner ring raceway surface 13a on an outer peripheral surface (a race ring being a rotating ring), and an outer ring raceway.
  • a plurality of balls 15 that are rotatably arranged between the surface 11a and the inner ring raceway surface 13a, a cage 17 that holds the plurality of balls 15 so as to roll, and both axial sides of the inner peripheral surface of the outer ring 11 And a pair of seal members 19 fixed to each other.
  • the rolling bearing 10 includes a plurality of constituent members such as the outer ring 11, the inner ring 13, the ball 15, the cage 17, and the seal member 19.
  • the inner ring 13 is a rotating wheel that is externally fixed to the shaft 3 and rotates together with the shaft 3.
  • a motor 41 (device) is fixed to the shaft 3 on one axial end side (left side in the figure) of the rolling bearing 10, and the shaft 3 is rotationally driven by a rotor (not shown) of the motor 41.
  • a pump 42 (device) is fixed to the shaft 3 on the other axial end side (right side in the drawing) of the rolling bearing 10, and the driving force of the motor 41 is transmitted to the pump 42 via the shaft 3. .
  • the outer ring 11 is a fixed ring that is fitted and fixed to a housing (not shown) and does not rotate.
  • a pair of seal grooves 11b for fixing a pair of seal members 19 are formed on the inner peripheral surface of the outer ring 11 on both sides in the axial direction of the outer ring raceway surface 11a.
  • the pair of seal members 19 is a non-contact type that extends in the radial direction and faces the outer peripheral surface of the inner ring 13 via a gap. As a result, the pair of seal members 19 seals the space between the outer ring 11 and the inner ring 13 and prevents foreign matter from entering the bearing.
  • a sensor unit 20 for detecting a surrounding signal is embedded and installed.
  • a method for installing the sensor unit 20 on the outer ring 11 will be described more specifically.
  • a mounting hole 12 for mounting the sensor unit 20 is provided at the axial end of the outer peripheral surface of the outer ring 11.
  • the mounting hole 12 includes a substantially rectangular housing hole 12a that is recessed in the outer peripheral surface of the outer ring 11, and a cylindrical small-diameter hole 12b that is recessed in the center of the housing hole 12a.
  • a female screw portion 12c is formed on the side surface of the small-diameter hole 12b, and a male screw portion 27c of a housing 27 of the sensor unit 20 described later can be screwed and fixed.
  • the sensor unit 20 has a housing 27 that houses the sensor module 21, the wireless module 23, and the power generation module 25 in one.
  • the casing 27 includes a cylindrical large-diameter portion 27a that houses the modules 21, 23, and 25, and a cylindrical small-diameter portion 27b that protrudes downward from the center of the large-diameter portion 27a. Become.
  • a male screw portion 27c is formed on the outer peripheral surface of the small diameter portion 27b.
  • the sensor unit 20 is fixed to the outer ring 11 by screwing the male screw portion 27c of the housing 27 into the female screw portion 12c of the small diameter hole 12b.
  • the sensor unit 20 protrudes outside the outer ring 11. do not do. Therefore, the sensor unit 20 can be prevented from interfering when the outer ring 11 is fixed to the housing or the like.
  • the shape of the accommodation hole 12a of the mounting hole 12 is not limited.
  • the shape of the large-diameter portion 27a of the housing 27 is not limited to a cylindrical shape, and an arbitrary shape such as a hexagonal cylindrical shape or an octagonal cylindrical shape may be adopted.
  • the casing 27 of the sensor unit 20 is not limited to the above-described configuration, and the configuration shown in FIGS. 4 and 5 may be adopted.
  • the casing 27 shown in FIG. 4 has a bottomed shape that opens upward by providing a flange portion 27d that protrudes on the opposite side of the small diameter portion 27b on the periphery of the large diameter portion 27a. And after arrange
  • the rolling bearing 10 is configured as a sensor-equipped bearing.
  • the sensor unit 20 is installed in the mounting hole 12 of the outer ring 11.
  • the constituent members of the rolling bearing 10 such as the inner ring 13, the cage 17, and the seal member 19, the female thread portion is provided. If it is a member which can be formed, the installation location of the sensor unit 20 is not particularly limited.
  • the material of the rolling bearing 10 is case-hardened steel and is subjected to carburizing and quenching heat treatment
  • the internal thread can be processed by post-processing by applying a carburizing agent to the internal thread installation portion before the heat treatment.
  • adhesive fixing, fitting fixing, or the like can be employed instead of screwing fixing.
  • the sensor module 21 constituting the sensor unit 20 is composed of one or more sensor elements, and monitors (measures) the state of the rolling bearing 10 and the devices (the motor 41 and the pump 42) arranged around the rolling bearing 10. ) Sensors that can be applied.
  • the sensor module 21 of the present embodiment is composed of a module equipped with a temperature sensor. The temperature detected by the temperature sensor is affected by the heat generated by the rolling bearing 10, the motor 41, and the pump 42.
  • the wireless (communication) module 23 is a module that transmits a signal detected by the sensor module 21 to the outside as a radio wave.
  • the type of radio is not particularly limited, but digital communication is preferable to analog communication because the package can be downsized.
  • the communication standard is not particularly limited, but using an existing communication standard such as Bluetooth (registered trademark) or Wi-Fi is advantageous in terms of cost.
  • the power generation module 25 supplies power to the sensor module 21 and the wireless module 23.
  • a power generation method of the power generation module 25 any method such as power generation using vibration, power generation using light, power generation using wireless power feeding from the outside can be adopted.
  • the temperature data detected by the sensor module 21 is transmitted to the abnormality diagnosis device 30 by the wireless module 23.
  • the abnormality diagnosis device 30 includes a receiving device 34 that receives a radio wave transmitted by the wireless module 23.
  • the abnormality diagnosis apparatus 30 includes, for example, a microcomputer, and each unit such as the data collection unit 31 executes the following processes by executing a program recorded and held in the microcomputer. It will be.
  • the data collection unit 31 of the abnormality diagnosis device 30 collects output data from the sensor module 21.
  • the data processing unit 32 of the abnormality diagnosis device 30 processes the collected output data and stores each output data.
  • the state determination unit 33 of the abnormality diagnosis apparatus 30 includes the rolling bearing 10, the motor 41, and the pump 42. It is determined that at least one is in an abnormal state.
  • the temperature increase curve obtained from the output value of the sensor module 21 rises for a while after the rolling bearing 10, the motor 41, and the pump 42 are started to operate.
  • the temperature reaches the rated temperature Ta the heat generated by the rolling bearing 10, the motor 41, and the pump 42 balances with the heat that escapes to the surroundings, resulting in a steady state.
  • the pump 42 abnormally generates heat due to some factor.
  • the output value of the sensor module 21 increases and exceeds a predetermined threshold value Tb.
  • the abnormality diagnosis device 30 is configured such that at least one of the rolling bearing 10, the motor 41, and the pump 42 is in an abnormal state based on the output value of the sensor module 21 increasing or the output value exceeding the threshold value Tb. It is determined that
  • abnormality diagnosis system 1 of the present embodiment it is possible to efficiently perform abnormality diagnosis of the rolling bearing 10 and abnormality diagnosis of the devices (the motor 41 and the pump 42) arranged around the rolling bearing 10. It is.
  • a relay device 35 is disposed between the wireless module 23 of the sensor unit 20 and the receiving device 34 of the abnormality diagnosis device 30, and the relay device 35 receives wireless radio waves transmitted from the wireless module 23 and receives the receiving device. 34 may be transferred.
  • the relay device 35 may be a non-metal through which a radio signal passes, or may have an antenna 36 inside and outside the mechanical equipment 5 and transmit data received inside to the outside.
  • the power supply of the relay device 35 may be self-generated by vibration or the like, may be contactless power feeding, may be a primary battery such as a button battery, and is not particularly limited.
  • data transfer may be performed by one relay device 35 for one sensor unit 20, and data transfer may be performed by one relay device 35 for a plurality of sensor units 20.
  • the radio wave from the radio module 23 may be transmitted only when the sensor module 21 detects abnormal data. In this case, since it is not necessary to transmit data wirelessly at all times, the power consumption of the entire sensor unit 20 can be suppressed.
  • the installation position of the sensor unit 20 may be changed as appropriate so that the position or phase is suitable for the object whose abnormality is to be detected.
  • the sensor unit 20 may be arranged in the vicinity of one end in the axial direction of the outer ring 11 to improve the sensitivity to the abnormality of the motor 41, so that the arrangement is suitable for detecting the abnormality of the motor 41.
  • the sensor unit 20 may be arranged near the other end in the axial direction of the outer ring 11 to improve sensitivity to the abnormality of the pump 42, so that the arrangement is suitable for detecting the abnormality of the pump 42.
  • the sensor unit 20 may be arranged in the vicinity of the outer ring raceway surface 11a of the outer ring 11 to improve sensitivity to the abnormality of the rolling bearing 10 so that the arrangement is suitable for detecting the abnormality of the rolling bearing 10.
  • the sensor constituting the sensor module 21 is not limited in type as long as it can monitor the state of the rolling bearing 10 and the devices (for example, the motor 41 and the pump 42) arranged around the rolling bearing 10, for example. You may employ
  • the abnormality diagnosis device 30 determines an abnormality in the rolling bearing 10, the motor 41, or the pump 42, it can notify the host system to automatically stop the mechanical equipment, or display an alarm or screen display to the worker and the administrator. It is also possible to warn with etc.
  • the device disposed around the rolling bearing 10 is not limited to the motor 41 and the pump 42 described above, and any device can be employed.
  • Abnormality diagnosis system Shaft 5 Mechanical equipment 10 Rolling bearing (measurement object) 11 Outer ring (fixed ring) 11a Outer ring raceway surface 11b Seal groove 12 Mounting hole 12a Housing hole 12b Small diameter hole 12c Female thread 13 Inner ring 13a Inner raceway surface 15 Ball 17 Cage 19 Seal member 20 Sensor unit 21 Sensor module 23 Wireless module 25 Power generation module 27 Housing 27a Large Diameter portion 27b Small diameter portion 27c Male thread portion 28 Lid member 29 Resin mold 30 Abnormality diagnosis device 31 Data collection unit 32 Data processing unit 33 State determination unit 34 Reception device 35 Relay device 36 Antenna

Abstract

L'invention concerne une unité de capteur (20) qui comprend : un module capteur (21) qui détecte un signal dans la zone environnante ; un module sans fil (23) qui envoie sous la forme d'une onde radio le signal détecté par le module capteur (21) ; un module de production d'énergie (25) qui fournit de l'énergie au module capteur (21) et au module sans fil (23) ; et un boîtier (27) qui loge ensemble le module capteur (21), le module sans fil (23) et le module de production d'énergie (25). Grâce à cette configuration, une unité de capteur qui présente une configuration compacte et peut effectuer une détection, un envoi et une production d'énergie est obtenue, ainsi qu'un palier équipé d'un capteur et un système de diagnostic d'anomalie.
PCT/JP2016/067200 2015-06-10 2016-06-09 Unité de capteur, palier équipé d'un capteur et système de diagnostic d'anomalie WO2016199846A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015117317 2015-06-10
JP2015-117317 2015-06-10
JP2015-143072 2015-07-17
JP2015143072A JP2017003555A (ja) 2015-06-10 2015-07-17 センサユニット、センサ付き軸受及び異常診断システム

Publications (1)

Publication Number Publication Date
WO2016199846A1 true WO2016199846A1 (fr) 2016-12-15

Family

ID=57503968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/067200 WO2016199846A1 (fr) 2015-06-10 2016-06-09 Unité de capteur, palier équipé d'un capteur et système de diagnostic d'anomalie

Country Status (1)

Country Link
WO (1) WO2016199846A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020209206A1 (fr) * 2019-04-08 2020-10-15 日本精工株式会社 Système de communication sans fil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355203A (ja) * 1999-06-14 2000-12-26 Denso Corp タイヤ空気圧警報装置
JP2005098941A (ja) * 2003-09-26 2005-04-14 Ntn Corp ワイヤレスセンサ付軸受装置
JP2008122268A (ja) * 2006-11-14 2008-05-29 Ntn Corp 回転検出装置付き軸受
JP2009015626A (ja) * 2007-07-05 2009-01-22 Nsk Ltd センサ付軸受装置
JP2013032211A (ja) * 2011-08-03 2013-02-14 Ntn Corp 異常検出機能付き搬送装置用軸受ユニットおよびコンベア設備

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355203A (ja) * 1999-06-14 2000-12-26 Denso Corp タイヤ空気圧警報装置
JP2005098941A (ja) * 2003-09-26 2005-04-14 Ntn Corp ワイヤレスセンサ付軸受装置
JP2008122268A (ja) * 2006-11-14 2008-05-29 Ntn Corp 回転検出装置付き軸受
JP2009015626A (ja) * 2007-07-05 2009-01-22 Nsk Ltd センサ付軸受装置
JP2013032211A (ja) * 2011-08-03 2013-02-14 Ntn Corp 異常検出機能付き搬送装置用軸受ユニットおよびコンベア設備

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020209206A1 (fr) * 2019-04-08 2020-10-15 日本精工株式会社 Système de communication sans fil
JPWO2020209206A1 (ja) * 2019-04-08 2021-10-28 日本精工株式会社 無線通信システム
JP7024913B2 (ja) 2019-04-08 2022-02-24 日本精工株式会社 無線通信システム
US11817934B2 (en) 2019-04-08 2023-11-14 Nsk Ltd. Wireless communication system

Similar Documents

Publication Publication Date Title
JP6699140B2 (ja) 異常診断システム
WO2016175322A1 (fr) Système de diagnostic d'anomalie
EP2746610B1 (fr) Dispositif de détection d'état pour rouleau de support, dispositif de palier à roulement avec capteur et générateur de turbine éolienne
EP2841902B1 (fr) Mesures d'émission acoustique d'ensemble palier
US6535135B1 (en) Bearing with wireless self-powered sensor unit
US20150211580A1 (en) Bearing power embedded generating configuration
WO2012098980A1 (fr) Palier muni d'un joint équipé d'un capteur
CN113039141B (zh) 输送机惰轮监控设备、系统和方法
WO2016133100A1 (fr) Système de diagnostic d'anomalie
JP2013050193A (ja) 軸受装置
JP2010174969A (ja) 異常検知装置
WO2016199846A1 (fr) Unité de capteur, palier équipé d'un capteur et système de diagnostic d'anomalie
JP2017003555A (ja) センサユニット、センサ付き軸受及び異常診断システム
JP6966497B2 (ja) 軸受診断装置、軸受診断方法、及びエスカレーター
JP6621683B2 (ja) 部品状態検知装置
JP2003090335A (ja) センサ付転がり軸受装置及びセンサ付回転支持装置
JP2006312972A (ja) 車両用軸受装置
JP4329698B2 (ja) 駆動軸損傷診断ユニット
JP2014129849A (ja) 軸受回転状態計測監視装置
JP2021032769A (ja) 転がり軸受の状態監視方法及び状態監視装置
JP2017096444A (ja) 転がり軸受装置及び異常診断システム
JP2018136863A (ja) 異常検知システム
JP2004218814A (ja) 軸受装置
JP2004308878A (ja) センサ付軸受装置
JP2005233290A (ja) センサ付軸受装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16807552

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16807552

Country of ref document: EP

Kind code of ref document: A1