WO2016060008A1

WO2016060008A1 - Roller bearing device with attached stay

Info

Publication number: WO2016060008A1
Application number: PCT/JP2015/078297
Authority: WO
Inventors: 泰孝楠見; 浩也加藤; 雄一郎野呂; 健太郎西川
Original assignee: Ntn株式会社
Priority date: 2014-10-16
Filing date: 2015-10-06
Publication date: 2016-04-21
Also published as: JP2016080061A

Abstract

The present invention relates to a roller bearing device with an attached stay, and provided with: a rolling bearing (12) having a pair of bearing rings, i.e., an inner ring (12a) and an outer ring (12b), and multiple rotating bodies (12c) interposed between said bearing rings; at least one peripheral component (11) of the roller bearing (12); and a stay (3) which is configured so as to detachably hold a sensor unit (2). The stay (3) comprises a holding unit (3a) for holding the sensor unit (2), and is arranged such that the center of said holding unit (3a) is positioned on the rotational axis O of the rolling bearing (12). By this means, the sensor unit (2) can always be attached to the same position even when repeatedly attached and detached; reproducibility of the measurement results is good and measurement accuracy high; the mounting operation of the sensor unit (2) is speedy; and it is possible to measure a rotating site.

Description

Rolling bearing device with stay

Related applications

This application claims the priority of Japanese Patent Application No. 2014-211677 filed on October 16, 2014, and is incorporated herein by reference in its entirety.

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

So far, in the industrial field such as railway vehicles and windmills, a permanent 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 device to monitor the operation state. (Patent Document 1)

In addition, a handy type measurement system that monitors the status of data detected by a dedicated sensor by using a portable information terminal such as a smartphone, processing and storing data on a server, etc., and comparing it with past data Has been proposed. (Patent Document 2)

JP 2012-042338 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 from a remote place, but it requires installation of a sensor unit for each measurement site, resulting in expensive equipment. Instead, when one sensor unit is used for a plurality of measurement sites, the position may be shifted from the previous assembly at the time of reassembly.

The handy-type measurement system disclosed in Patent Document 2 has the advantages of excellent portability and low cost. However, in determining an abnormality of a bearing or the like, a value calculated based on the bearing specifications is used as a threshold value. However, if the determination is made based on such a threshold value in an environment with a large disturbance, the determination accuracy is lowered.

In addition, when one sensor unit is used for a plurality of measurement objects (measurement parts), settings such as input / selection of measurement object information must be changed every time the measurement object changes.
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 if the sensor unit is repeatedly attached and detached, the sensor unit can always be attached at the same position, so the reproducibility of the measurement results is good and the measurement accuracy is high, and the sensor unit can be installed quickly. It is to provide a rolling bearing device with a stay that enables measurement of a rotating part.

A rolling bearing device with a stay according to one configuration of the present invention includes a pair of bearing rings that are an inner ring and an outer ring, and a rolling bearing having a plurality of rolling elements interposed between the bearing rings, and at least one periphery of the rolling bearing. There is provided a stay configured to detachably hold a sensor unit having a component and a state detection sensor for measuring 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, when the sensor unit is repeatedly attached to and removed from the rolling bearing device, unlike the case where the sensor probe is manually pressed against the rolling bearing device because the stay is configured to detachably hold the sensor unit. However, it can always be measured at the same position with respect to the rolling bearing device. Therefore, the reproducibility of the measurement result is good and the measurement accuracy is high. 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. Furthermore, 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 a preferred embodiment, the stay may be arranged such that the stay has a holding portion that holds the sensor unit, and the center of the holding portion is located on the rotation shaft of the rolling bearing.
Regardless of whether the sensor unit is installed on the rotating side or the stationary side of the rolling bearing device, when measuring vibrations with this sensor unit, it is necessary to measure accurately by measuring on the rotating shaft of the rolling bearing. Can do. Specifically, stays are provided and centered so that the sensor unit can always be mounted at the same position even if it is repeatedly attached and detached, so the eccentricity is always the same and the sensor unit can be easily mounted. And reproducibility is good.

In a further preferred embodiment, the inner ring or the outer ring is a rotating wheel, and the rotating wheel and a component that is one of the peripheral components, the rotating component being attached to the rotating wheel and rotating together with the rotating wheel. The stay may be attached to any one of the above.
When the stay is positioned on the rotation shaft, even if the sensor unit is attached to the rotating component, the stay is not swung around by rotation, and the sensor unit is stabilized.

In a further preferred embodiment, the outer ring may be a rotating ring, 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 a preferred embodiment, the inner ring or the outer ring is a fixed ring, and the stay is attached to any one of the fixed ring and a part that is one of the peripheral parts and the part to which the fixed ring is attached. May be attached.
Even when a sensor unit is installed on a fixed side edge or a fixed side component, the above-mentioned stay is interposed, so that the reproducibility and measurement accuracy due to the stable mounting position of the sensor unit is good and rapid. Enable installation work.

The state detection sensor may include an acceleration sensor that measures vibration of the rolling bearing. If an acceleration sensor is used, abnormality determination of a rolling bearing device can be performed with high accuracy. In this case, the stability of the mounting position due to the stay is useful for improving the measurement accuracy and the determination accuracy.

In a preferred embodiment, the sensor unit may be further provided.
Furthermore, the sensor unit may include a wireless communication device that transmits measurement data about the rolling bearing measured by the state detection sensor.
Since the sensor unit has a wireless communication device, no wiring is required for communication of the 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 a preferred embodiment, unique information holding means for indicating information unique to the rolling bearing device may be provided in the stay. Further, the sensor unit may have a reading device that reads the unique information indicated by the unique information holding means.
Since the stay holds the unique information, even when one sensor unit is used for measurement of a plurality of objects, it is possible to automatically determine a part based on the unique information read by the reader. Therefore, no input operation is required, and no setting mistake or input mistake occurs.
Since the unique information holding means is provided in 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 unique information holding means are provided separately. There is also an advantage that it can be performed by each of the above devices.
The unique information may be an identification number of the rolling bearing device, or may be information to which the specifications of the rolling bearing device, manufacturing history, and the like are added.

Any combination of at least two configurations disclosed in the claims and / or the specification and / or drawings is included in the present invention. In particular, any combination of two or more of each claim in the claims is included in the present invention.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same reference numerals in a plurality of drawings indicate the same or corresponding parts.
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 which concerns on 1st Embodiment using the rolling bearing apparatus with a stay of FIG. It is a block diagram which shows the specific example of a conceptual structure of the state automatic determination system of FIG. It is a figure which shows the flow of the process and action which each component of the state automatic determination system of FIG. 2 performs with a block configuration. It is a block diagram which shows the conceptual structure of the state automatic determination system which concerns on 2nd Embodiment. It is a block diagram which shows the conceptual structure of the state automatic determination system which concerns on 3rd Embodiment. It is sectional drawing which shows the rolling bearing apparatus with a stay and sensor unit which concern on 2nd Embodiment of this invention. It is sectional drawing which shows the rolling bearing apparatus with a stay and sensor unit which concern on 3rd Embodiment of this invention. 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 which is a measuring object.

A rolling bearing device with a stay according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a combined state of a rolling bearing device with a stay and a sensor unit, and FIG. 2 is a conceptual configuration of an automatic state determination system 100 according to the first embodiment including the rolling bearing device according to this embodiment. It is a block diagram which shows an outline.

1, a rolling bearing device 10 with a stay according to the present embodiment includes a rolling bearing device 1 and a stay 3. The stay 3 holds the sensor unit 2 in a detachable manner. The stay 3 is also attached to the rolling bearing device 1 in a constantly installed state (fixed installation). The stay 3 is provided with unique information holding means 4.

As shown in FIG. 2, the state automatic determination system 100 according to the first embodiment includes one or more rolling bearing devices 1 and one or more sensor units corresponding to the rolling bearing devices 1, respectively. 2 and one processing system 5. Each sensor unit 2 includes a state detection sensor 6 that measures a state quantity or the like of the rolling bearing device 1 and a reading device 7 that reads unique information from the unique information holding means 4 of the corresponding stay 3. The processing system 5 is a device that processes information obtained by one or a plurality of sensor units 2. Based on the unique information read by the reading device 7 of each sensor unit 2, the processing system 5 extracts information for determination such as a predetermined processing method and determination criteria used for determining the state of the rolling bearing device 1. The processing system 5 uses the extracted determination information to determine whether or not the rolling bearing device 1 is in a predetermined state such as abnormality determination based on the measurement data output by the state detection sensor 6. The processing system 5 is wirelessly connected to one or 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, but in the present embodiment is composed of an information terminal 8 and a data server 9 as shown in FIG.

1, the rolling bearing device 1 according to the present embodiment is specifically composed of a device in which a pulley 11 in an auxiliary machine of an automobile is rotatably supported on a fixed shaft 13 via a rolling bearing 12. 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. That is, the rolling bearing device 1 includes a rolling bearing 12 and its peripheral parts (pulley 11 and the like). In this embodiment, the rolling bearing 12 is a sealed ball bearing. The rolling bearing 12 includes an inner ring 12a and an outer ring 12b, and includes a rolling element 12c formed of a ball and seals 12d and 12d positioned at both ends between the both race rings 12a and 12b. A rotating part 14 that is a movable part such as an end face cover that covers the end face of the rolling bearing 12 and that is rotated is attached to the pulley 11. The stay 3 is fixedly installed on the outer surface of the rotating component 14. The stay 3 has a holding portion 3 a that holds the sensor unit 2, and the center of the holding portion 3 a is located on the rotation axis O of the rolling bearing 12. Here, the center of the holding part 3a is the center of gravity of the holding part 3a. The holding portion 3a preferably has a symmetric shape in a cross section orthogonal to the extending direction. The holding part 3a is more preferably cylindrical. In that case, the cross section orthogonal to the extending direction of the holding part 3a is circular.

The stay 3 has a short cylindrical seat portion 3b whose back side surface (one of two back-facing surfaces orthogonal to the extending direction of the stay 3) is joined to the rotating component 14, and the seat portion 3b. And a shaft-like holding portion 3a protruding from the center of the front side surface (the other surface of the two back-facing surfaces). The stay 3 may be hollow, semi-hollow, or solid. The material of the stay 3 may be a synthetic resin or a metal. The stay 3 and the rotating component 14 may be joined by any of screws, adhesives, magnetism, welding, labyrinth shapes, rings, and the like.

The holding unit 3a positions and holds the sensor unit 2. Specifically, in the illustrated embodiment, the holding portion 3a is press-fitted into the mounting hole 16 provided in the bottom outer surface 15b of the case 15 of the sensor unit 2, or is fitted with a screw, magnetism, labyrinth shape, or the like. As a result, the bottom outer surface 15 b comes into contact with the front side surface of the seat portion 3 b of the stay 3. As a result, the holding unit 3a positions and holds the sensor unit 2.

In addition, the stay 3 may be difficult to attach to the measurement position in the rolling bearing device 1. In that case, the stay 3 may be integrated with the rolling bearing device 1 or the rotating component 14 to be measured.

A pulley 11 having a shaft 13 supported by the rolling bearing 12 of the rolling bearing device 1 is a pulley of each belt device 72 of an auxiliary machine provided in an automobile, specifically, a commercial vehicle 71 shown in FIG. Also good.

The rolling bearing device 1 according to the second embodiment shown in FIG. 7 is 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. In the present embodiment, the stay 3 is attached to the end surface of the inner ring 12a. Also in this embodiment, the stay 3 is attached so that the center of the holding portion 3 a of the stay 3 is positioned on the rotation axis O of the bearing 12. Other configurations of the state measurement device according to the second embodiment are the same as those of the state measurement device according to the first embodiment. The parts corresponding to the matters described in the preceding form in the present embodiment are denoted by the same reference numerals, and the overlapping description is omitted.

Further, the rolling bearing device 1 according to the third embodiment shown in FIG. 8 is a rolling bearing device in which a pulley 64 is provided on a fixed shaft 63 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 machine component 1 by screwing the stay 3 into the male screw portion 63 a provided at the end of the fixed shaft 63 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. Other configurations of the state measurement device according to the second embodiment are the same as those of the state measurement device according to the first embodiment. The parts corresponding to the matters described in the preceding form in the present embodiment are denoted by the same reference numerals, and the overlapping description is omitted.

Referring back to FIG. 1 showing the state measurement device according to the first embodiment, the state measurement device according to the first embodiment will be described in detail. However, the following description is common to the state measurement apparatuses according to the second and third embodiments. The unique information holding means 4 provided in the stay 3 is means for holding and indicating unique information (identification information of the rolling bearing 1) unique to the corresponding rolling bearing device 1, and includes an RFID, a one-dimensional barcode, or It consists of a two-dimensional barcode. A QR code (registered trademark) is used as the two-dimensional barcode. The specific information is preferably information specific to the rolling bearing device 1. The unique information may be basic information such as the model number or serial number of the rolling bearing device 1 or the stay 3 itself, the installation location, the shipping date, the type of the rolling bearing device 1, and the internal specifications and The usage conditions may be included.

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) in addition to the state detection sensor 6 and the reading device 7. The state detection sensor 6 is a sensor that detects a state quantity of the rolling bearing device 1. Although only one state detection sensor 6 may be provided in the sensor unit 2, a plurality of, for example, an acceleration sensor 6a that performs vibration measurement and a gyro sensor 6b that is a rotation detection sensor are provided as shown in FIG. Also good. In addition, the state detection sensor 6 may have a temperature sensor (not shown).

In this embodiment, the state detection sensor 6 is a sensor that outputs measurement data composed of analog signals. The output measurement data is digitally converted by the A / D converter and output wirelessly. The sensor unit 2 may output the measurement data as an analog signal in a wired manner and A / D convert it by the information terminal 8 (FIG. 3). A sensor that outputs measurement data composed of digital signals may be used as the state detection sensor 6.

When the sensor unit 2 is installed in the movable part of the rolling bearing device 1 to be measured, a signal of measurement data may be transmitted to the information terminal 8 by wire using a slip ring (not shown). The battery 19 (FIG. 1) may be a battery type or a charging type. The processing elements such as the sensor 6, the wireless communication device 18, and the reading device 7 of the center unit 2 may be supplied with power from a non-contact power supply or a slip ring without using the battery 19.

The reading device 7 is a device that reads information indicated by the unique information holding means 4 provided in the stay 3 in a non-contact manner or in contact with the unique information holding means 4. The reading device 7 is provided so that the information indicated by the unique information holding means 4 can be read in a state where the sensor unit 2 is held by the stay 3 so that the state detection sensor 6 can detect the state of the rolling bearing device 1. It has been. The reading device 7 is a tag reader when the unique information holding means 4 is an RFID, and a barcode reader when the unique information holding means 4 is a one-dimensional or two-dimensional barcode. The wireless communication device 18 transmits the read unique information to the processing system 5 together with the measurement data. A sensor unit identifier such as identification data of the sensor unit 2 may be transmitted together with the measurement data and the unique information. The wireless communication device 18 may be a device capable of wireless communication at a very short distance. The wireless communication device 18 is a communication device including a processor that executes processing according to a communication protocol, an antenna that performs transmission and reception of radio waves, and the like. The wireless communication method employed by the wireless communication device 18 may be any method such as infrared communication or Wi-Fi (registered trademark).

In FIG. 3, the information terminal 8 of the processing system 5 receives the measurement data and the unique information from the sensor unit 2 and transmits the measurement data and the unique information to the data server 9 via the communication network 51. The information terminal 8 includes a communication device 21 capable of receiving data from the sensor unit 2 wirelessly or by wire, and another communication processing unit 21A is connected to a communication network 51 such as the Internet. The communication processing unit 21A may be a unit that communicates wirelessly. The information terminal 8 displays the related information on the screen 23a of the display device 23 such as a liquid crystal display device via the terminal side processing means 22 configured by dedicated software. For example, the communication processing unit 21A acquires the unique information of the rolling bearing device 1 to be measured, the past measurement data, the state determination result, and the like stored in the data server 9, and can be browsed on the display device 23. To do. The communication network 51 is a computer communication network such as the Internet, for example. Therefore, the display device 23 of the information terminal 8 can browse the related information using a Web browser or the like.

The terminal side processing means 22 is composed of 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 may be installed after being downloaded from the data server 9. Alternatively, the dedicated software is stored in a portable storage medium such as a CD or DVD, and may be installed from the storage medium. Alternatively, the communication network 51 may be obtained and installed from a homepage or an application site on a server other than the data server 9 on the Internet. The OS (operation program) 24 of the information terminal 8 has a function that enables such download and installation. The terminal-side processing means 22 displays, for example, the specific information of the stay 3, the measurement data of the sensor unit 2, the state determination result or the analysis result acquired from the data server 9 on the screen 23 a of the display device 23. Etc. are displayed.

The information terminal 8 further 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.

The data server 9 receives the measurement data and unique information from the information terminal 8 by the communication processing unit 36 and stores the measurement data in the information storage unit 31. The data server 9 also identifies the measurement site by specifying the bearings, peripheral components, vehicle information, and the like stored in the specification database 32 based on the received unique information. Measurement data and determination conditions (determination information) suitable for the rolling bearing device 1 to be measured are determined using the information storage unit 31 and / or the specification database 32, and the measurement data received by the data analysis unit 34 Is analyzed. The analysis result is stored in the processing data storage unit 35. The determination condition is set or updated using accumulated data for each part. The state determination unit 33 determines the state of each rolling bearing device 1 by comparing the analysis result with the determination condition. Further, the state determination unit 33 estimates an abnormality occurrence part using information on bearings and peripheral parts stored in the specification database 32 and an analysis result. The analysis result and the abnormality determination result are transmitted to the information terminal 8 that is the transmission source.

In the information storage unit 31, component history (various histories of the rolling bearing device 1) such as measurement data, determination results and / or data analysis results of each rolling bearing device 1 whose state has been measured, result output format, etc. Is also remembered. 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 specifications of peripheral parts, specifications of a part equipped with the rolling bearing device 1 to be measured, and the like. Further, a determination method for determining a state according to the type of the rolling bearing device 1 and determination information (determination conditions) such as a threshold value are stored in either the specification database 32 or the information storage unit 31.

The data analysis unit 34 performs frequency analysis, which is signal processing of measurement data, and converts the signal into a signal that can easily determine the state such as abnormality determination. In this frequency analysis, not only vibration data but also rotational speed data may be used among the measurement data.

The state determination unit 33 compares the result of the process performed by the data analysis unit 34 with the part history or past measurement data, or a predetermined determination condition (threshold value, etc.) and the like, such as whether there is an abnormality in the rolling bearing device 1. Make a decision.

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. The display terminal 52 can access the data server 9 and browse the unique information of the rolling bearing device 1 that is the measurement target, the past measurement data, the result of the state determination, and the like stored in the processing data storage unit 35. . The display terminal 52 can receive and display information acquired from the data server 9 via the communication network 51 from the communication processing unit 36 in the data server 9, for example. In this case, the communication processing unit 36 may perform access restriction by registering the authorized display terminal 52 or using a password or the like.

The communication processing unit 36 of the data server 9 transmits and displays the result of the state determination to at least the information terminal 8 that has transmitted the measurement data. In addition to the information terminal 8 that has transmitted the measurement data, the status processing result or the like may be transmitted to the display terminal 52 in which the address is registered. The display terminal 52 in which the address is registered is, for example, a terminal of a predetermined business department of a bearing manufacturer.

FIG. 4 is a block diagram showing a flow of processing and action performed by each component of the state automatic determination system 100.
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 (such as a radio wave) of specific information is transmitted from the sensor unit 2 to the stay 3. In response to the call signal, unique information holding means 4 comprising an IC tag built in the stay 3 in the signal transmits the held 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 unique information from the information terminal 8 via the communication network 51. The data server 9 extracts information about the rolling bearing device 1 to be measured (determination information, part history, past measurement data, etc.) from the information storage unit 31 and the specification database 32 using the specific information as a key. The data analysis unit 34 of the data server 9 processes the measurement data. The state determination unit 33 of the data server 9 is a rolling bearing by comparing the result of processing by the data analysis unit 34 with the extracted component history or past measurement data, or information for determination set in advance from bearing specifications or the like. The state of the device 1 is determined. When the result of determination by the data analysis unit 34 is abnormal, the communication processing unit 36 of the data server 9 transmits a signal for causing the display terminal 52 to display “abnormal” and data regarding the result of the state determination. At the same time, the administrator of the display terminal 52, for example, a business unit of a bearing manufacturer is contacted by telephone, e-mail, SNS or the like. When there is no abnormality, the communication processing unit 36 transmits a signal for causing the display terminal 52 to display “no abnormality” and data regarding the result of the state determination.

The information terminal 8 and the display terminal 52 may be configured by a common terminal 80.

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 in the rolling bearing device 1, the mounting position of the sensor unit 2 is stable, variation in measurement data due to mounting errors is suppressed, and preparation for measurement in a short time becomes possible.
Even if the mounting position of the sensor cannot be secured in the fixed part of the vehicle bearing and its peripheral parts included in the rolling bearing device 1 to be measured, the movable part of the vehicle bearing and its peripheral parts can be provided by providing the stay 3. In addition, the sensor unit 2 having a sensor for measuring the state of the measurement object can be mounted.
Even when the sensor unit 2 is installed in the movable part, if the movable center is measured, it is difficult to be affected by disturbances and high-precision measurement is possible.
-The sensor unit 2 is detachably attached to the rolling bearing device 1 via the stay 3, so that the reproducibility of the measurement result is good and the accuracy of the measurement result is different from that in which the probe is manually pressed against the rolling bearing device 1. The accuracy of determination is improved by the improvement. 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.

By providing the unique information holding means 4 in the stay 3, the measurement object can be easily identified, measurement preparation in a short time is possible, and data accumulation and past data retrieval are easy.
-Since the part to be measured can be specified by using the unique information, 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, it is possible to make a highly accurate determination in consideration of disturbance.
The unique information unique to the rolling bearing device 1 is held in the unique information holding means 4. The sensor unit 2 includes a state detection sensor 6 and a reading device 7 that reads unique information held in the unique information holding unit 4. For this reason, 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 determining the state of the plurality of rolling bearing devices 1, Input operation is not required. Therefore, input mistakes do not occur. 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 only by giving a measurement start command by a switch or the like. Information for determination such as a threshold corresponding to the device 1 can be extracted. For this reason, it is possible to appropriately perform a determination regarding a predetermined state such as an abnormality determination.

-From the information setup 8 to the measurement setup to the browsing of the diagnosis result becomes possible. The information terminal 8 may be a portable terminal such as a smartphone. If it is a portable type, it can operate near the rolling bearing device 1 to be measured.

FIG. 5 shows an automatic state determination system 100A according to the second embodiment. In the state automatic determination system 100 according to the first embodiment shown in FIGS. 1 to 4, the data server 9 performs data analysis and state determination, but the state automatic determination system according to the present embodiment in FIG. In 100A, the information terminal (information / display terminal) 8A is configured to perform data analysis and state determination, and the information terminal 8A is an information / display terminal having an information display function.

In the following description, the same reference numerals are assigned to the portions corresponding to the matters described in the preceding form in this embodiment, and the overlapping description is omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in advance unless otherwise specified. The same effect is obtained from the same configuration. Not only the combination of the parts specifically described in each embodiment, but also the embodiments can be partially combined as long as the combination does not hinder.

In this embodiment, 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 obtains the measurement data and the unique information from the sensor unit 2 and transmits the unique information to the data server 9, a data analysis unit 44, a state determination unit 43, Have The data server 9 automatically identifies the rolling bearing device 1 based on the specification database 32 storing the specification information of the rolling bearing device corresponding to each unique information and the unique information transmitted from the information terminal 8A. The communication processing unit 36 extracts the specification information of the rolling bearing device 1 and transmits the specification information to the information terminal 8A. The data analysis unit 44 and the state determination unit 43 of the information terminal 8A analyze the measurement data obtained from the sensor unit 2 by using the specification information transmitted from the data server 9, and the rolling bearing device 1 Each state is determined.

Even if information terminals in recent years are portable terminals such as personal computers, smartphones, tablets, etc., the arithmetic processing function has dramatically improved, and state determination processing such as abnormality determination with sufficient accuracy and processing speed Can be done. However, determination information such as threshold values and determination information such as past data are enormous amounts of data when used in a plurality of rolling bearing devices 1, and are difficult to store in the portable information terminal 8A. In addition, there is a lot of waste due to redundant storage of data. 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. In this way, the information terminal 8A performs only the state determination process, thereby effectively using the advanced processing function of the information terminal 8A and reducing the burden on the data server 9 and the usage cost of the data server 9. However, the state can be determined.

Also in this embodiment, the data server 9 stores an information storage unit 31 for storing measurement data, determination results and / or data analysis results, part history, result output format, and the like of the rolling bearing device 1 that has performed state measurement. And a processing data storage unit 35 that stores data analysis and state determination results for each rolling bearing device 1 as a history for each rolling bearing device 1. The data server 9 may perform the state determination using the history of the rolling bearing device 1.

Even if state determination such as abnormality determination is performed under a determination condition such as a threshold value determined from rolling bearing device specifications for each type of rolling bearing device 1, it is determined that the state is normal by using past determination information about the individual. If determined, it may be determined to be abnormal, and vice versa. Therefore, in addition to state determination based on machine part specifications for each type, state determination using history information is performed, and the determination unit such as abnormality determination is improved by comprehensively performing a determination unit from the results of both determinations. .
Other configurations and effects of the state automatic determination system 100A according to the present embodiment are the same as the configurations and effects of the state automatic determination system 100 according to the first embodiment shown in FIGS.

The data server 9 has a function of performing the data analysis and the state determination as in the embodiments of FIGS. 1 to 4, and the information terminal 8A is configured to perform the data analysis and the state according to a set condition. It may have a function of switching whether to perform the determination at the information terminal 8A or the data server 9.

FIG. 6 shows an automatic state determination system 100B according to the third embodiment. The state automatic determination system 100B according to this embodiment is different from the state automatic determination system 100 according to the first embodiment shown in FIGS. 1 to 4 in that each piece of rolling bearing device 1 has different unique information. By applying the stay 3 provided with the unique information holding means 4 for holding the plurality of sensor units 2, the plurality of sensor units 2 are connected to the processing system 5, and the processing system 5 simultaneously determines the state of the plurality of rolling bearing devices 1. It is configured to perform in parallel processing.
Other configurations and effects are the same as those of the state automatic determination system 100 according to the first embodiment shown in FIGS. 1 to 4.

In each of the first to third automatic state determination systems, the rolling bearing device 1 that is a determination target is, for example, a vehicle bearing device that includes the vehicle bearing described in conjunction with 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.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily assume various changes and modifications within the obvious scope by looking at the present specification. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

1: Rolling bearing device 2: Sensor unit 3: Stay 5: Processing system 6: State detection sensor

Claims

A rolling bearing having a pair of race rings which are an inner ring and an outer ring, and a plurality of rolling elements interposed between the race rings;
At least one peripheral component of the rolling bearing;
A rolling bearing device with a stay, comprising: a stay configured to detachably hold a sensor unit having a state detection sensor for measuring the state of the rolling bearing.
2. The rolling bearing device with a stay according to claim 1, wherein the stay has a holding portion for holding the sensor unit, and the center of the holding portion is positioned on a rotation shaft of the rolling bearing. Is a rolling bearing device with a stay.
The rolling bearing device with a stay according to claim 2, wherein the inner ring or the outer ring is a rotating wheel, and the rotating wheel and one of the peripheral parts are attached to the rotating wheel and A rolling bearing device with a stay, wherein the stay is attached to any one of components rotating together with a rotating wheel.
4. The rolling bearing device with a stay according to claim 3, wherein the outer ring is a rotating wheel, and the rotating part 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 inner ring or the outer ring is a fixed ring, and the fixed ring and a part that is one of the peripheral parts, and a part to which the fixed ring is mounted. A rolling bearing device with a stay, wherein the stay is attached to any one of the above.
6. A rolling bearing device with a stay according to claim 2, wherein the state detection sensor includes an acceleration sensor that measures vibration of the rolling bearing.
7. A rolling bearing device with a stay according to any one of claims 1 to 6, further comprising the sensor unit.
The rolling bearing device with a stay according to claim 7, wherein the sensor unit has a wireless communication device that transmits measurement data about the rolling bearing measured by the state detection sensor.
9. A rolling bearing device with a stay according to any one of claims 1 to 8, wherein the stay is provided with unique information holding means for indicating information unique to the rolling bearing device.
10. A rolling bearing device with a stay according to claim 9, wherein the sensor unit has a reading device for reading the unique information indicated by the unique information holding means.