JP2016080061A - Rolling bearing device with stay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling bearing device with a stay which can constantly attach a sensor unit to the same position even if the sensor unit is repeatedly attached and detached, is favorable in the reproduction performance of a measurement result, improved in measurement accuracy, can promptly perform the installation work of the sensor unit, and can measure a rotation region.SOLUTION: A stay 3 which can detachably hold a sensor unit 2 for measuring a state 12 of a rolling bearing is arranged at a rolling bearing device 1. The stay 3 is arranged so that a center of a holding part 3a for holding the sensor unit 2 is located on a rotation center O of a rolling bearing 12. The sensor unit 2 may be arranged at any of a rotation-side component and a fixed-side component of the rolling bearing device 1. Furthermore, natural information storage means 4 such as an RFID which indicates information unique to the rolling bearing device may be arranged at the sensor unit 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rolling bearing device used in a vehicle auxiliary machine, an industrial machine, or the like, and relates to a rolling bearing device with a stay that facilitates state measurement for abnormality determination or the like.

2. Description of the Related Art Conventionally, in an industrial field such as a railway vehicle or a windmill, a permanent type monitoring system has been proposed in which an acceleration sensor, a rotation sensor, a temperature sensor, and the like are installed in a bearing or a bearing unit and the operation state thereof is monitored. (Patent Document 1)
In addition, a handy-type measurement system that monitors the status by using a portable information terminal device such as a smartphone, data processing and storage on a server, etc., and comparing it with past data is proposed. ing. (Patent Document 2)

JP 2012-02338 A JP 2013-228352 A

  The permanent monitoring system disclosed in Patent Document 1 and the like has an advantage that it can always be monitored even in a remote place, but a sensor is required for each measurement site, and the equipment is expensive. In addition, there is a possibility that the position may be shifted from the previous time during reassembly, and there are concerns such as deterioration in measurement accuracy, reproducibility, and instability.

The handy-type measurement system disclosed in Patent Document 2 has the advantages of excellent portability and low cost. However, in determining the abnormality of a bearing or the like, calculation based on the specifications of the bearing is a threshold value, but the disturbance is large. In the environment, the judgment accuracy decreases.
When a single sensor unit is used for a plurality of measurement objects, settings such as input / selection of measurement object information must be changed each time the measurement object changes. Therefore, it takes time and there is a concern about the possibility of setting mistakes.
Furthermore, there is a problem that measurement on the rotation side of the rolling bearing is difficult.

The object of the present invention is that even when the sensor unit is repeatedly detached and attached, it can always be attached at the same position, the reproducibility of the measurement results is improved, the measurement accuracy is improved, the sensor unit can be installed quickly, and the rotation It is to provide a rolling bearing device with a stay that can also measure a part.
Another object of the present invention is to shorten the setup time and to automatically determine the rolling bearing device to be measured, thereby making it possible to eliminate the need for input operations and eliminate input errors.

The rolling bearing device with a stay according to the present invention has a stay that can detachably hold a sensor unit that measures the state of the rolling bearing.
The rolling bearing device may be a single rolling bearing, a bearing unit in which the rolling bearing is housed in a housing, or a device having a roller and a pulley on the outer periphery of the rolling bearing.

According to this configuration, since the sensor unit has a stay that detachably holds the sensor unit, the sensor unit is always the same even when the sensor unit is repeatedly attached to and detached from the rolling bearing device, unlike the case where the sensor unit probe is manually pressed against the rolling bearing device. It can be attached to the position, and the reproducibility of the measurement result is good and the measurement accuracy is improved. Moreover, the time for mounting the sensor unit on the rolling bearing device is shortened by having the stay. The presence of the stay makes it possible to attach the sensor unit to the movable part of the rolling bearing device. Further, the sensor unit may be attached to the rolling bearing device only when measurement is necessary, and this does not hinder the use of the rolling bearing device.
Note that the sensor unit can be detachably held by the stay by a fitting type, or by a magnet or the like in which magnetic on / off is switched.

In this invention, the stay may be provided such that the center of the holding portion that holds the sensor unit is positioned on the rotation center of the rolling bearing.
Regardless of whether the sensor unit is installed on the rotation side or the fixed side, when vibration measurement or the like is performed, the measurement can be performed with high accuracy by performing measurement on the center of rotation. Specifically, by providing stays and aligning the cores, the sensor unit can always be mounted at the same position even when the sensor unit is repeatedly removed, so the eccentricity is always the same and the sensor unit can be easily mounted. And has reproducibility.

When positioned on the center of rotation as described above, the stay may be attached to a rotating side wheel of the rolling bearing or a rotating part that is attached to the rotating side wheel and rotates together with the rotating side wheel. .
If there is a stay on the center of rotation, even if the sensor unit is attached to a rotating part, the sensor unit will not be swung by rotation and the sensor unit will be stable.

Further, in the case of being positioned on the center of rotation as described above, the rolling bearing may be an outer ring rotating type, and the rotating component may be an end surface cover that covers an end surface of the rolling bearing.
By providing the stay at the center of the end surface cover, the sensor unit can be easily installed and the sensor unit is stabilized.

In the present invention, the stay may be attached to a fixed side wheel of the rolling bearing or a component to which the rotating side wheel is attached.
Even when the sensor unit is installed on the fixed side edge or on the fixed side part, providing the stay has the effect of improving the reproducibility due to the stable mounting of the sensor unit, the measurement accuracy, and the quick installation work. can get.

  The sensor unit may include an acceleration sensor that measures vibration of the rolling bearing. According to the acceleration sensor, it is possible to accurately determine the abnormality of the rolling bearing device. In that case, the stability of the mounting position due to the presence of the stay is effective in improving measurement accuracy and determination accuracy.

The rolling bearing device with a stay according to the present invention may include the sensor unit in addition to the rolling bearing and the stay.
In this case, the sensor unit may have wireless communication means for transmitting the measurement data of the rolling bearing measured by the sensor unit.
If the wireless communication means is provided, no wiring is required for communication of each information. Therefore, information can be transmitted even when a wiring space cannot be obtained around the rolling bearing device or when the stay and the sensor unit are installed in the rotating portion of the rolling bearing device.

In the present invention, the stay may be provided with a reading device that shows information unique to the rolling bearing device. The sensor unit may have unique information reading means for reading the unique information indicated by the reading device.
By storing unique information in the stay, even when measuring multiple objects with one sensor unit, it is possible to automatically determine parts from each unique information, thus eliminating the need for input operations. , Setting mistakes and input mistakes are eliminated.
Since the reading device is provided on the stay, the state detection and the reading of the unique information can be performed at positions close to each other as compared with the case where the stay and the reading device are provided separately, and are collectively performed by the sensor unit. The advantage of being able to
The unique information may be an identification number of the rolling bearing device, or may be information to which the configuration or manufacturing history of the rolling bearing device is added.

  Since the rolling bearing device with a stay of the present invention has a stay that can detachably hold the sensor unit for measuring the state of the rolling bearing, even when the sensor unit is repeatedly detached, it can always be mounted at the same position, The reproducibility of the measurement result is good, the measurement accuracy is improved, and the effect that the sensor unit can be installed quickly can be obtained.

It is sectional drawing which shows the rolling bearing apparatus with a stay and sensor unit which concern on 1st Embodiment of this invention. It is a block diagram which shows the outline of a conceptual structure of the state automatic determination system using the rolling bearing apparatus with a stay. It is a block diagram which shows the specific example of a conceptual structure of the same state automatic determination system. It is a flowchart which shows the flow of a process and an effect | action of the state automatic determination system. It is a block diagram which shows the conceptual structure of the other example of a state automatic determination system. It is a block diagram which shows the conceptual structure of the further another example of a state automatic determination system. It is sectional drawing which shows the rolling bearing apparatus with a stay and sensor unit concerning other embodiment. It is sectional drawing which shows the rolling bearing apparatus with a stay and sensor unit concerning other embodiment. It is a front view which shows the auxiliary machine installation part of the commercial vehicle which is an apparatus equipped with the rolling bearing apparatus used as a measuring object.

A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a coupling state between a rolling bearing device with a stay and a sensor unit, and FIG. 2 is a block diagram showing an outline of a conceptual configuration of a state automatic determination system of the rolling bearing device.
In FIG. 1, this stay-equipped rolling bearing device is a rolling bearing device 1 in which a stay 3 capable of detachably holding a sensor unit 2 is attached in a constantly installed state. The stay 3 is provided with unique information storage means 4.

  As shown in FIG. 2, the automatic state determination system includes the rolling bearing device 1 of FIG. 1, the sensor unit 2, and a processing system 5. The sensor unit 2 includes a state detection sensor 6 that measures a state quantity and the like of the rolling bearing device 1 and a reading device 7 that reads the unique information from the unique information storage unit 4. The processing system 5 is a device for processing the information obtained by the sensor unit 2 and includes a predetermined processing method and determination criteria used for determining the state of the rolling bearing device 1 in FIG. 1 from the unique information read by the reading device 7. The determination information is selected, and the selected determination information is used to determine a predetermined state such as abnormality determination of the rolling bearing device 1 of FIG. 1 from the measurement data output from the state detection sensor 6. The processing system 5 is wirelessly connected to a plurality of sensor units 2 and can process information of each sensor unit 2. The processing system 5 may be composed of a single information processing device such as a computer. In this example, the processing system 5 is composed of an information terminal 8 and a data server 9 as shown in FIG.

  In FIG. 1, the rolling bearing device 1 in this example is a rolling bearing device as described above. Specifically, a pulley 11 in an auxiliary machine of an automobile can be freely rotated on a fixed shaft 13 via a rolling bearing 12. It consists of a supported device. The rolling bearing 12 rotates the outer ring, and the pulley 11 is fitted to the outer peripheral surface of the outer ring 12b that is the rotating side wheel. In this example, the rolling bearing 12 is a sealed ball bearing, and includes a rolling element 12c formed of a ball between the inner ring 12a and the outer ring 12b, and seals 12d positioned at both ends between the both race rings 12a and 12b. ing. A component 14 that is a rotating portion such as an end surface cover that covers the end surface of the rolling bearing 12 is attached to the pulley 11. The stay 3 is fixed to the outer surface of the component 14, and the center of the holding portion 3 a that holds the sensor unit 2 is located on the rotation center O of the rolling bearing 12.

The stay 3 has an outer shape composed of a short cylindrical seat portion 3b whose back side surface is joined to the rotating component 14, and a shaft-like holding portion 3a protruding from the center of the front side surface of the seat portion 3b. . The cross-sectional shape of the stay 3 may be any of a hollow shaft type, a semi-hollow shaft type, and a hollow non-type. The material of the stay 3 may be a synthetic resin or a metal. The stay 3 and the component 14 may be joined in any joining form such as a screw, an adhesive, magnetism, welding, a labyrinth shape, or a ring.
In the illustrated example, the holding portion 3a is such that the bottom surface 15a of the case 15 of the sensor unit 2 is in contact with the seat portion 3b of the stay 3, and the holding portion 3a is press-fitted into the mounting hole 16 provided on the bottom surface, or a screw, The sensor unit 2 is positioned and held by fitting in a magnetic or labyrinth shape.

Note that the stay 3 may be a stay integrated with the rolling bearing device 1 or the component 14 to be measured when it is difficult to attach the stay 3 to the measurement position in the rolling bearing device 1.
Further, the rolling bearing device 1 of FIG. 1 is constituted by pulleys of belt devices 72 of auxiliary machines provided in an automobile, specifically, a commercial vehicle 71 shown in FIG.

  In addition to the example of FIG. 1, the rolling bearing device 1 may be a bearing device in which a rolling bearing 12 for rotating an inner ring is installed in a housing 61 and supports a rotating shaft 62 as shown in FIG. 7. The stay 3 is attached to the end surface of the inner ring 12a. Also in this case, the stay 3 is attached so that the center of the holding portion 3a of the stay 3 coincides with the rotation center of the bearing 12.

  Further, the rolling bearing device 1 may be a rolling bearing device in which a pulley 64 is provided on a fixed shaft 63 as shown in FIG. 8 via a fitting part 65 and a rolling bearing 12 for rotating an outer ring. In this case, the stay 3 is attached to the male screw portion 63a provided at the end of the fixed shaft 63 by being screwed with the female screw portion. The sensor unit 2 is attached to the stay 3 by screwing a male screw portion 15 a provided in the case 15 of the sensor unit 2 into a female screw portion provided concentrically with the shaft 63 in the stay 3.

  In FIG. 1, the unique information storage means 4 is means for storing unique information unique to the rolling bearing device 1, and comprises an RFID, a one-dimensional barcode, a two-dimensional barcode, or the like. A QR code (registered trademark) is used as the two-dimensional barcode. The unique information may be information unique to the rolling bearing device 1, but may be basic information such as a model number or a serial number of the rolling bearing device 1 or the stay 3 itself. The type of the rolling bearing device 1 may be used, and internal specifications, usage conditions thereof, and the like may be included.

  In addition to the state detection sensor 6 and the reading device 7, the sensor unit 2 includes a wireless communication device 18 that communicates with the processing system 5, a battery 19, and an A / D converter (not shown). The state detection sensor 6 is a sensor for detecting the state quantity of the rolling bearing device 1 and may be one. In this example, a plurality of acceleration sensors 6a for measuring vibration, for example, as shown in FIG. A gyro sensor 6b serving as a rotation detection sensor is provided. In addition, the state detection sensor 6 may have a temperature sensor (not shown).

In this example, the state detection sensor 6 is an analog output sensor, and the measurement data is digitally converted by the A / D converter and output wirelessly. Note that the sensor unit 2 may output measurement data as analog data in a wired manner and perform A / D conversion with the information terminal 8 (FIG. 3). A sensor that outputs a digital signal may be used as the state detection sensor 6.
When the sensor unit 2 is installed on the movable part of the rolling bearing device 1 to be measured, it may be transmitted to the information terminal 8 by wire using a slip ring (not shown). The battery 19 may be of a battery type or a charging type, or may be supplied from a non-contact power supply or a slip ring without using the battery 19.

  The reading device 7 is a device that reads the contents stored in the unique information storage means 4 provided in the stay 3 in a non-contact manner or in contact with the unique information storage means 4, and the sensor unit 2 detects the state in the stay 3. The unique information storage means 4 is provided so as to be readable while being held in a state where it is possible. The reader 7 uses a tag reader when the unique information storage means 4 is an RFID, and uses a barcode reader when the unique information storage means 4 is a one-dimensional or two-dimensional barcode. The wireless communication device 18 adds identification data of the sensor unit 2 to the processing system 5 and transmits the read unique information together with the measurement data. The wireless communication device 18 may be a device capable of wireless communication at a very short distance.

  In FIG. 3, the information terminal 8 receives measurement data and unique information from the sensor unit 2, accesses the communication network 51, and transmits the measurement data and unique information to the data server 9. The information terminal 8 includes a communication device 21 that can receive data from the sensor unit 2 wirelessly or by wire, and is connected to a communication network 51 such as the Internet by another communication processing unit 21A. The communication processing unit 21A may be a unit that communicates wirelessly. The information terminal 8 displays related data on the screen of the display device 23 such as a liquid crystal display device via the terminal-side processing means 22 configured by dedicated software. The communication processing unit 21A, for example, accesses the data server 9, and enables browsing of specific information, past measurement data, state determination results, and the like of the rolling bearing device 1 to be measured. The communication network 51 is a computer communication network such as the Internet, for example, and the related information can be browsed by a Web browser or the like.

  The terminal-side processing means 22 is configured by dedicated software and has a function of controlling information communication with the sensor unit 2 and the data server 9, data display, and the like. The dedicated software constituting the terminal side processing means 22 is downloaded and installed from the data server 9, or a portable storage medium such as a CD or a DVD, or the data server 9 other than the data server 9 on the Internet constituting the communication network 51. Obtained from homepage, app site, etc. and installed. The OS (operation program) 24 of the information terminal 8 has such a function that can be downloaded and installed. On the screen of the display device 23, the terminal-side processing means 22 includes, as the related information, for example, unique information of the stay 3, measurement data of the sensor unit 2, state determination results and analysis results transmitted from the data server 9, etc. Is displayed.

  In addition to the above, the information terminal 8 includes an input unit 25 such as a touch panel for input by an operator, and an information storage unit 26 for storing the measurement data and unique information, the state determination result, the analysis result, and the like.

The data server 9 includes an information storage unit 31, a specification database 32, a state determination unit 33, a data analysis unit 34, a processing data storage unit 35, and a communication processing unit 36.
In brief, the data server 9 receives data from the information terminal 8 by the communication processing unit 36 and stores the state data in the information storage unit 31. A measurement site is determined from bearings, peripheral parts, vehicle information, and the like stored in the specification database 32. Signal processing conditions and determination conditions suitable for the rolling bearing device 1 to be measured are determined in the information storage unit 31 and / or the specification database 32 and analyzed by the data analysis unit 34. The analysis result is stored in the processing data storage unit 35, and the determination condition is set or updated using the accumulated data for each part. The state determination unit 33 determines the state by comparing the analysis result with the determination condition. In addition, the state determination unit 33 estimates an abnormality occurrence site using information on bearings and peripheral parts in the specification database 32 and analysis results. The analysis result and the abnormality determination result are transferred to the information terminal 8 of the transmission source.

  The information storage unit 31 also stores state measurement data of each rolling bearing device 1 that has performed state measurement and the like, a part history such as a determination result and a data analysis result, a result output format, and the like. The information storage unit 31 may store measurement conditions based on the unique information.

  The specification database 32 stores specifications of the rolling bearing device 1, for example, bearing specifications. The specification database 32 may store peripheral component specifications, specifications of a part equipped with a bearing that is the target rolling bearing device 1, and the like. In addition, a determination method for determining a state according to the type of the rolling bearing device 1, determination information such as a threshold value, or the like is stored in either the specification database 32 or the information storage unit 31.

The data analysis unit 34 performs signal processing of the measurement data and frequency analysis to make a signal that can easily determine the state such as abnormality determination. In this frequency analysis, in addition to vibration data, measured rotational speed data may be used.
The state determination unit 33 determines whether there is an abnormality in the rolling bearing device 1 by comparing the analysis result of the data analysis unit 34 with past data or predetermined determination information.
The processing data storage unit 35 stores the analysis result performed by the data analysis unit 34 and the result of the state determination performed by the state determination unit 33 as a history for each rolling bearing device 1.

The display terminal 52 is an information terminal having a display function and a communication function, and can access the data server 9 and browse specific information, past measurement data, state determination results, and the like of the rolling bearing device 1 to be measured. . For example, information of the data server 9 can be received from the communication processing unit 36 in the data server 9 via the communication network 51 and displayed. In this case, the communication processing unit 36 may perform access restriction with a registered display terminal 52 having authority, a password, or the like.
The communication processing unit 36 of the data server 9 basically transmits and displays the result of the state determination to the information terminal 8 that has transmitted the measurement data, but is registered in addition to the information terminal 8 that has transmitted the measurement data. It has a function of transmitting the result of state processing to the display terminal 52 having an address or the like. The display terminal 52 having the registered address or the like is, for example, a terminal of a predetermined business division of a bearing manufacturer.

FIG. 4 is a flowchart showing the processing and operation performed by this state automatic determination system.
When the sensor unit 2 is attached to the stay 3 and the power of the sensor unit 2 is turned on, a calling signal (radio wave or the like) of unique information is transmitted from the sensor unit 2 to the stay 3, and the signal is incorporated in the stay 3. The unique information storage means 4 composed of the IC tag reacts to transmit the unique information to the sensor unit 2. The state detection sensor 6 incorporated in the sensor unit 2 measures the state quantity of the rolling bearing device 1 and transmits the measurement data to the information terminal 8 together with the specific information.

  The information terminal 8 is connected to the data server 9 via the communication network 51 and transmits the measurement data and the unique information received from the sensor unit 2 to the data server 9. The data server 9 receives the measurement data and the specific information from the information terminal 8 via the communication network 51, and the information storage unit 31 and the specification database 32 in the data server 9 roll the measurement target from the specific information. Information on the bearing device 1 (determination information, part history, past measurement data, etc.) is extracted, and the data analysis unit 34 processes the measurement data. The state determination unit 33 performs a determination by comparing the analysis result of the data analysis unit 34 with the extracted past data or preset determination information, and displays “abnormal” on the display terminal 52 in the case of abnormality. Signals and status determination result data are transmitted, and the user is contacted by telephone, e-mail, SNS or the like. Further, when there is no abnormality, a display signal of “no abnormality” and result data are transmitted to the display terminal 52.

According to the rolling bearing device with stay and the state automatic determination system of this configuration, the following advantages are obtained.
-Since the stay 3 is permanently installed, the following advantages can be obtained. The mounting position of the sensor unit 2 is stable, and variations in measurement data due to mounting errors can be suppressed, and preparation for measurement can be performed in a short time.
・ Even if the sensor cannot be attached to the fixed part of the rolling bearing device 1 to be measured, which is the rolling bearing device 1 and its peripheral parts, the stay 3 is provided to the movable part of the bearing for the vehicle and its peripheral parts. The sensor unit 2 having a sensor capable of measuring the state of the object can be mounted.
Even when the sensor unit 2 is installed on the movable part, the measurement at the center of the movable part makes it difficult to be affected by disturbances and enables highly accurate measurement.
Since the sensor unit 2 is detachably attached to the rolling bearing device 1 via the stay 3, unlike the conventional device that simply presses the probe, the reproducibility of the measurement result and the accuracy of the determination can be improved by improving the accuracy. Further, the sensor unit 2 may be attached to the rolling bearing device 1 only when measurement is necessary, and the use of the rolling bearing device 1 is not hindered.

・ Installation of the identification information device 4 on the stay 3 makes it easy to grasp the measurement target and prepare for measurement in a short time.
・ It becomes easy to accumulate data and search past data.
-By specifying the part to be measured, it is possible to set a threshold for abnormality determination according to the environment for each part, not for each bearing part number. In addition, high-accuracy determination can be performed in consideration of disturbance.
The rolling bearing device 1 has the unique information storage means 4, and the sensor unit 2 has the state detection sensor 6 and the reading device 7 that reads the unique information. Therefore, the rolling bearing device 1 can be automatically identified from the unique information read by the sensor unit 2, and even if this state automatic determination system is used for a plurality of rolling bearing devices 1, an input for identifying the rolling bearing device 1 is used. No operation is required, and typographic errors can be eradicated. For example, as described above, the sensor unit 2 is attached to the rolling bearing device 1 of a desired measurement target, and the measurement target rolling bearing is automatically performed without any input operation simply by giving a measurement start command by a switch or the like. Information for determination such as a threshold value corresponding to the device 1 can be selected, and a determination regarding a predetermined state such as an abnormality determination can be appropriately performed.
The information terminal 8 can handle from measurement setup to browsing of diagnosis results. The information terminal 8 may be a portable type such as a smartphone, and can be operated near the rolling bearing device 1 to be measured.

FIG. 5 shows another example of the state automatic determination system. In the example shown in FIGS. 1 to 4, the data server 9 performs data analysis and state determination, but in the example of FIG. 5, the information terminal (information / display terminal) 8 </ b> A performs data analysis and state determination. The information terminal 8A is an information / display terminal having an information display function.
Specifically, the processing system 5 includes the information terminal 8A and a data server 9 connected to the information terminal 8A via a communication network 51. The information terminal 8A receives the measurement data and the data from the sensor unit 2. It has a communication processing unit 21A that obtains unique information and transmits the unique information to the data server 9, a data analysis unit 44, and a state determination unit 43. The data server 9 includes a specification database 32 that stores specification information of a rolling bearing device corresponding to the unique information, and automatic identification and the specification of the rolling bearing device 1 based on the unique information transmitted from the information terminal 8A. A communication processing unit 36 that selects information and transmits the information to the information terminal 8A. The data analysis unit 44 and the state determination unit 43 of the information terminal 8A include the specification information transmitted from the data server 9. Are used for analysis and determination of the state based on the measurement data obtained from the sensor unit 2, respectively.

  Even if information terminals in recent years are portable terminals such as personal computers, smartphones, tablets, etc., the arithmetic processing function has been dramatically improved, and state determination processing such as abnormality determination with sufficient accuracy and processing speed Can be done. However, when used for a plurality of rolling bearing devices 1, information for determination such as threshold values and past data becomes an enormous amount of data, and is difficult to store and wasteful in the information terminal 8 </ b> A at hand. Therefore, as described above, the determination information is stored in the data server 9 and transmitted from the data server 9 to the information terminal 8A, that is, the data server 9 is simply used as a database, and the information terminal 8A determines its state. By performing only the above processing, it is possible to effectively use the advanced processing function of the information terminal 8A, and to determine the state while reducing the burden on the data server 9 and the usage cost of the data server 9.

Also in this example, the data server 9 has an information storage unit 31 for storing the results of data analysis and state determination for the rolling bearing device 1 as history information of the rolling bearing device 1, and the data server 9 Has a function of performing the state determination using the history information of the rolling bearing device 1.
Even if the state determination such as abnormality determination is performed with a threshold value determined from the rolling bearing device specifications for each type of the rolling bearing device 1 and is normal, it may become abnormal if it is determined using past determination information about the individual. Yes, and vice versa. Therefore, by performing state determination based on history information in addition to state determination by type and performing a comprehensive determination unit from the results of both determinations, the accuracy of determination such as abnormality determination is improved.
Other configurations and effects are the same as those of the example shown in FIGS.
The data server 9 has a function of performing the data analysis and the determination of the state as in the examples of FIGS. 1 to 4, and the information terminal 8 </ b> A determines the data analysis and the state according to the setting conditions. The information terminal 8A or the data server 9 may have a function of switching the determination.

FIG. 6 shows still another example of the state automatic determination system. In this embodiment, in the embodiment shown in FIGS. 1 to 4, the plurality of rolling bearing devices 1 uses stays 3 having specific information storage means 4, and a plurality of sensor units 2 are used as a plurality of rolling bearing devices in the processing system 5. The state determination of the apparatus 1 is configured to be simultaneously performed by parallel processing.
Other matters are the same as in the example shown in FIGS.

Note that the rolling bearing device 1 to be determined by the state automatic determination system is, for example, the vehicle bearing described with reference to FIG. 9 and its peripheral components.
Vehicle bearings include alternator bearings, cell motor bearings, water pump bearings, hydraulic pump bearings, fan coupling bearings, compressor bearings, supercharger bearings, turbocharger bearings, idler pulley bearings, etc. Can be mentioned.
Peripheral parts include bearing shafts, nuts, pulley covers, belts, alternators, cell motors, water pumps, hydraulic pumps, fan couplings, compressors, superchargers, turbochargers, idler pulleys, and the like.

1: Rolling bearing device 2: Sensor unit 3: Stay 4: Unique information storage means 5: Processing system 6: State detection sensor 7: Reading device 8: Information terminal 9: Data server 21: Communication device 31: Information storage unit 32: Specification database 33: state determination unit 34: data analysis unit 35: data storage unit 36: communication processing unit 51: communication network 52... Display terminal

Claims (10)

  A rolling bearing device with a stay having a stay capable of detachably holding a sensor unit for measuring the state of the rolling bearing.   The rolling bearing device with a stay according to claim 1, wherein the stay is provided so that a center of a holding portion for holding the sensor unit is positioned on a rotation center of the rolling bearing.   The rolling bearing device with a stay according to claim 2, wherein the stay is attached to a rotating side wheel of the rolling bearing or a part attached to the rotating side wheel and rotating together with the rotating side wheel. apparatus.   The rolling bearing device with a stay according to claim 3, wherein the rolling bearing is an outer ring rotating type, and the rotating component is an end surface cover that covers an end surface of the rolling bearing.   The rolling bearing device with a stay according to claim 2, wherein the stay is attached to a fixed side wheel of the rolling bearing or a component to which the rotating side wheel is attached.   The rolling bearing device with a stay according to any one of claims 2 to 5, wherein the sensor unit includes an acceleration sensor that measures vibration of the rolling bearing.   The rolling bearing device with a stay according to any one of claims 1 to 6, wherein the rolling bearing device with a stay includes the sensor unit in addition to the rolling bearing and the stay.   The rolling bearing device with a stay according to claim 7, wherein the sensor unit has wireless communication means for transmitting measurement data of the rolling bearing measured by the sensor unit.   The rolling bearing device with a stay according to any one of claims 1 to 8, wherein the stay is provided with unique information storage means for indicating information unique to the rolling bearing device.   The rolling bearing device with a stay according to claim 9, comprising the sensor unit, the sensor unit having a reading device for reading the unique information indicated by the unique information storage means.

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