JP2016075479A - Rolling stock bearing abnormality detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling stock bearing abnormality detection device with which it is possible to simplify the general composition of a device and reduce costs, and also to previously exclude disturbance vibration caused by a travelling rail joint, etc., and to accurately determine abnormality in the bearing of a rolling stock.SOLUTION: This rolling stock bearing abnormality detection device detects abnormality in a plurality of rolling bearings assembled into the axle box of the bogie of a rolling stock, the device having: a vibration detection device 15 for detecting one or both of the vibration of the rolling bearing and disturbance vibration; vibration measurement start means 53 for monitoring the detection value of the vibration detection device 15 and, when it is determined that the detection value is greater than or equal to a prescribed value, starting the measurement of the vibration of the rolling bearing; and an analysis device 6 for determining abnormality in the rolling bearing from the captured vibration data.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a railway vehicle bearing abnormality detection device that detects an abnormality of an axle bearing in a railway vehicle.

  In a railway vehicle, when an abnormality occurs in an axle bearing, it is necessary to take a measure such as stopping the operation of the vehicle, resulting in a great loss. Therefore, a bearing device with a railcar sensor that detects various operating elements of a rolling device by attaching various detecting elements to the bearing device has been proposed (Patent Document 1).

Japanese Patent No. 4529602

In the vibration detection of the bearing by the bearing device with a sensor for a rail vehicle, disturbance vibration generated at the time of passing through the joint of the wheel rail and the point portion when the vehicle travels is detected together with the vibration waveform caused by the abnormality of the bearing. There is a problem that the bearing abnormality cannot be accurately determined.
Further, the technique described in Patent Document 1 does not disclose the timing for starting vibration measurement. When a separate command device for starting vibration measurement is provided, the overall configuration of the device becomes complicated and the manufacturing cost increases.

  The object of the present invention is to simplify the overall configuration of the apparatus and reduce costs, and to accurately determine the abnormality of a bearing for a railway vehicle by excluding disturbance vibration caused by a joint of a traveling rail in advance. The present invention provides a bearing abnormality detecting device for a railway vehicle.

The bearing abnormality detecting device for a railway vehicle according to the present invention is a bearing abnormality detecting device for a railway vehicle that detects an abnormality of a plurality of rolling bearings 17 incorporated in a axle box 3 provided on a carriage 2 of the railway vehicle 1.
A vibration detection device 15 for detecting either or both of vibration of the rolling bearing 17 and disturbance vibration;
When the detection value of the vibration detection device 15 is monitored and it is determined that the detection value is equal to or greater than a predetermined value, vibration measurement starting means 53 for starting vibration measurement of the rolling bearing 17;
And an analysis device 6 for judging an abnormality of the rolling bearing 17 from the acquired vibration data.
The constant value is a value that serves as a trigger for capturing as vibration data of the rolling bearing 17, and is, for example, a joint or a point portion of the traveling rail 20 (these may be collectively referred to as "seam etc."). It is a value that occurs when passing through. This value is determined in advance by results of tests, simulations, and the like.

  According to this configuration, the vibration measurement start unit 53 monitors the detection value of the vibration detection device 15 and determines whether or not the detection value is equal to or greater than a predetermined value. The vibration measurement starting unit 53 starts measuring the vibration of the rolling bearing 17 when it is determined that the detected value is equal to or greater than a predetermined value. The analysis device 6 determines the abnormality of the rolling bearing 17 from the acquired vibration data. As described above, since the subsequent detection value is taken in as vibration data of the rolling bearing 17 on the basis of the detection value when the value is equal to or greater than a predetermined value, the vibration detection device 15 can be used also as a command means for starting vibration measurement. Thus, there is no need to separately provide a command device for starting vibration measurement. Therefore, the configuration of the entire apparatus can be simplified and the cost can be reduced.

  Further, the vibration detection device 15 takes in, for example, a detection value detected after a detection value equal to or greater than a certain value, such as a joint, as vibration data of the rolling bearing 17, thereby causing an extra vibration waveform other than the vibration waveform due to the bearing abnormality. Therefore, the detection data that is the vibration waveform due to the bearing abnormality is clarified. Accordingly, it is possible to accurately determine the abnormality of the bearing 17 for the railway vehicle by excluding the vibration waveform caused by passing through the joint or the like of the traveling rail 20.

A detection data transmission device 13 for transmitting detection data detected by the vibration detection device 15 and a detection data transmitted from the detection data transmission device 13 are installed in the vicinity of the traveling rail 20 on which the railway vehicle 1 travels. A data collection device 45 that collects data may be further provided.
The vicinity of the traveling rail 20 is the position of the data collection device 45 that can receive the detection data transmitted from the detection data transmission device 13.

  The detection data transmission device 13 transmits the detection data detected by the vibration detection device 15. The data collection device 45 receives and collects detection data wirelessly transmitted from the detection data transmission device 13. For this reason, for example, ancillary work for electric wires and data extraction work are not required as compared with data transmission by wire or recording media. Therefore, the detection data can be easily extracted and the cost can be reduced.

  The data collection device 45 may receive and collect the detection data together with an ID associated with each vibration detection device. Since the detection data is collected together with the ID in the data collecting device 45 in this way, it can be immediately identified which rolling bearing 17 incorporated in any axle box 3 is abnormal.

  A data storage server 46 for transmitting the detection data and the ID from the data collection device 45 via a telephone line is provided, and the analysis device 6 uses the detection data and the ID transmitted from the data storage server 46. The abnormality of each rolling bearing 17 may be determined. In this case, the acquisition of detection data can be simplified and the analysis time can be shortened.

The analysis device 6 includes:
A diagnostic unit 50 for diagnosing an abnormality of the bearing 17 when an analysis value obtained by frequency analysis of the detection data is equal to or greater than a threshold value relating to a set vibration;
A storage unit 51 for storing an analysis result diagnosed by the diagnosis unit 50;
A display unit 52 for displaying the analysis result diagnosed by the diagnostic unit 50;
Have
The analysis result diagnosed by the diagnosis unit 50 may be transmitted to the data storage server 46 together with the ID.
The threshold is determined, for example, by a result of experiment or simulation.

  According to this configuration, the diagnosis unit 50 diagnoses that the bearing 17 is abnormal when the analysis value is equal to or greater than the threshold value, and diagnoses that the bearing 17 is normal when the analysis value is less than the threshold value. The storage unit 51 stores the diagnosed diagnosis result. Since the analysis result is displayed on the display unit 52, the person in charge of measurement can visually check the analysis result without delay. Since the analysis result is transmitted to the data storage server 46 together with the ID, the analysis result can be browsed and confirmed for each ID as necessary.

  You may provide the electronic device which browses the analysis result recorded on the said data storage server 46 for every ID. As said electronic device, various electronic devices, such as a personal computer, a mobile phone, a smart phone, or PDA, can be applied, for example. By using such an electronic device, the data storage server 46 can be accessed and the analysis result can be browsed and confirmed for each ID. As a result of this analysis, not only the administrator who manages the apparatus but also the administrator who manages the peripheral devices including the railway vehicle 1 accesses the data storage server 46 using the above-mentioned various devices to obtain bearing replacement information. It is possible to easily obtain information such as maintenance information and information order arrangements.

  You may provide the memory | storage means 46 which memorize | stores the relationship of said ID of the said detection data, a bearing model number, a shaft box, a vehicle number, and a measurement date corresponding to the said detection data. In this case, it is possible to reduce the work burden associated with the arrangement and management of detected data.

  A railway vehicle bearing abnormality detection device according to the present invention is a railway vehicle bearing abnormality detection device that detects an abnormality of a plurality of rolling bearings incorporated in a axle box provided in a railcar bogie, wherein vibration of the rolling bearings, And a vibration detection device that detects one or both of disturbance vibrations and a detection value of the vibration detection device, and if it is determined that the detection value is equal to or greater than a predetermined value, the vibration of the rolling bearing It has vibration measurement starting means for starting measurement, and an analysis device for judging abnormality of the rolling bearing from the acquired vibration data. For this reason, while simplifying the whole structure of an apparatus and aiming at cost reduction, the disturbance vibration resulting from the joint of a running rail etc. can be excluded beforehand, and the abnormality determination of the bearing for railway vehicles can be performed correctly.

It is a figure which shows the example of installation of the bearing abnormality detection apparatus for rail vehicles which concerns on embodiment of this invention. It is a perspective view which shows the external appearance of the same bearing abnormality detection apparatus. It is a block diagram of a control system of the bearing abnormality detection device. It is a figure which shows the example of the vibration waveform detected with the same bearing abnormality detection apparatus. It is a figure which shows the example of attachment of the measurement start command transmission / reception apparatus and vibration detection apparatus of the same bearing abnormality detection apparatus. It is an AA line end view of FIG. It is a circuit diagram which shows roughly the structure of the processing circuit of the same bearing abnormality detection apparatus. It is a figure which shows the example of a vibration measurement by the same bearing abnormality detection apparatus. It is a figure which shows the example of a vibration measurement by the bearing abnormality detection apparatus which concerns on other embodiment of this invention.

  A railway vehicle bearing abnormality detection device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, this bearing abnormality detection device is a device that detects an abnormality in a plurality of rolling bearings incorporated in a axle box 3 provided in a carriage 2 of a railway vehicle 1. As the railway vehicle 1, for example, various railway vehicles such as a Shinkansen are applied. The bearing abnormality detection device detects the vibration of the bearing from the outside without having to take out the bearing from the axle box 3 when, for example, inspecting the bearing or the like at the vehicle station during vehicle inspection.

  FIG. 2 is a perspective view showing the appearance of the bearing abnormality detection device. As shown in FIGS. 1 and 2, the bearing abnormality detection device includes a slave unit set 5, a data collection device 45, a data storage server 46, and an analysis device 6. A plurality of handset sets 5 are provided for each axle box 3 for vibration detection. The plurality of handset sets 5 are detachably provided on a part of the railway vehicle 1 as will be described later. Each cordless handset set 5 includes a vibration detection device 15 and a measurement start command transmission / reception device 13. These vibration detection device 15 and measurement start command transmission / reception device 13 are electrically connected via an electric wire 16.

  FIG. 3 is a block diagram of a control system of the bearing abnormality detection device. The measurement start command transmission / reception device 13 in each slave set 5 includes a case (not shown), a vibration measurement start means 53, a power supply 41, a power supply circuit 42, a communication circuit 43, a communication module 44, an antenna 14, And a permanent magnet 47 (FIG. 2). In the case, the vibration measurement starting means 53, the power supply 41, the power supply circuit 42, the communication circuit 43, and the communication module 44 are accommodated. A permanent magnet 47 (FIG. 2) is provided in a part of the case, and this permanent magnet 47 (FIG. 2) is attracted and fixed to the head surface of the bolt near the axle box. The antenna 14 may be appropriately fixed to the vehicle body using an adhesive tape or the like as a separate body from the case.

  The vibration measurement start unit 53 includes a vibration measurement start determination unit 53a and a vibration data recording unit 53b. The vibration measurement start determination unit 53a monitors the detection value of the vibration detection device 15 via the electric wire 16 or the like, and determines whether or not the detection value is equal to or greater than a predetermined value. When the vibration measurement start determination unit 53a determines that the detected value is equal to or greater than a predetermined value, the vibration data recording unit 53b starts to measure the vibration of the rolling bearing and captures and records it as vibration data.

  In this example, as shown in FIG. 1, the vibration when the wheel 19 of the leading vehicle 1 passes through the joint of the traveling rail 20 is detected by the vibration detection device 15, and the detected value is as shown in FIG. When the vibration measurement start determination unit 53a determines that the value is equal to or greater than a certain value, the vibration data recording unit 53b starts to measure the vibration of the rolling bearing and captures and records it as vibration data.

  FIG. 4A shows an example of the vibration waveform due to the passage of the rolling element when the bearing outer ring is abnormal, and FIG. 4B shows the vibration waveform when the normal bearing passes the point portion of the running rail. An example is shown. As shown in FIGS. 4 (a) and 4 (b), the detected value by the vibration detection device 15 (FIG. 3) when passing through the joint of the running rail is the vibration detection device 15 (FIG. 3) due to normal bearing rotation. ) Is larger than the detection value detected in step (b).

  The detected value when passing through a seam, etc. is generated once and gradually attenuates, and the peak of the vibration waveform is regularly like the passing cycle of the bearing rolling element as in the bearing when the outer ring of the bearing is abnormal. Does not appear, so it is easy to determine. For example, when a detection value equal to or greater than a certain value is detected once per certain time, it may be determined that the vehicle has passed through a joint of the traveling rail. The predetermined time is determined according to the speed of the railway vehicle, for example.

  As shown in FIG. 3, the power supply voltage supplied from the power supply 41 is changed to a desired voltage by the power supply circuit 42 and supplied to the communication circuit 43, the communication module 44, and the antenna 14. The detection data recorded in the vibration data recording unit 53 b is converted into an electromagnetic wave having a frequency determined by the communication circuit 43 and transmitted via the communication module 44 and the antenna 14. The measurement start command transmission / reception device 13 as a transmission data transmission device is held in a state where radio waves are transmitted from the antenna 14.

  Here, FIG. 5 is a diagram illustrating an example of attachment of the measurement start command transmission / reception device 13 and the vibration detection device 15 of the bearing abnormality detection device. FIG. 6 is an end view taken along line AA in FIG. FIG. 6 is an enlarged view of the vicinity of the wheel 19 of the leading vehicle in FIG. As shown in FIGS. 1, 5, and 6, the vibration detection device 15 detects vibration of the rolling bearing 17, vibration at the time of passage of the joint of the traveling rail 20, and the like. A pair of axle boxes 3 are provided at a lower portion of the carriage 2 in the vehicle width direction, and rolling bearings 17 are incorporated in the axle boxes 3 respectively. Two axles 18 are provided in parallel to one carriage 2. For example, a plurality of rolling bearings 17 are incorporated into one axle box 3 at a predetermined interval. As the rolling bearing 17, for example, a ball bearing, a cylindrical roller bearing, a tapered roller bearing or the like is applied.

  The outer ring of the rolling bearing 17 is fitted to the inner peripheral surface of each axle box 3, and the axle 18 is fitted to the inner ring of the rolling bearing 17. Wheels 19 are attached to both ends of the axle 18 in the axial direction, and these wheels 19 are rotatably supported by rolling bearings 17 so as to be able to travel on two rails 20 laid in parallel on the track. The A bolt 21 made of a magnetic material is fastened to the axle box 3. For example, a hexagonal bolt is applied as the bolt 21. The permanent magnet 12 of the vibration detecting device 15 can be attracted and fixed to the head surface of the hexagon bolt exposed from the axle box 3.

  As shown in FIG. 3, the vibration detection device 15 includes, for example, a case (not shown), a vibration detection element 23, a processing circuit 24, a permanent magnet 12 (FIG. 5), a power supply circuit 25, and a recording unit 40. And a recording medium 22. For example, a processing circuit 24 mounted on a printed circuit board is accommodated in the case. The processing circuit 24 has a plurality of electronic components and is soldered to one side or both sides of the printed circuit board. As the printed circuit board, for example, a highly rigid glass-filled epoxy resin is desirable.

  A vibration detection element 23 for detecting the operating state of the rolling bearing 17 (FIG. 5) and a holder made of a magnetic material are attached to one end of the case in the axial direction. As the vibration detection element 23, for example, a piezoelectric acceleration sensor is applied. A wide range of vibrations can be detected by using the piezoelectric vibration detecting element 23. Inside the case, a lead wire is connected from a lead terminal of the vibration detecting element 23 to a connection terminal provided in the processing circuit 24.

  As shown in FIG. 5, a permanent magnet 12 is provided at the tip of the holder, and the permanent magnet 12 is attracted and fixed to the head surface of the bolt 21 in the axle box 3. Therefore, the vibration detection device 15 is detachably attached to the head surface of the bolt 21 by the permanent magnet 12. The plurality of vibration detection devices 15 are preferably attached above or below the axle box 3.

FIG. 7 is a circuit diagram schematically showing the configuration of the processing circuit 24 of the vibration detecting apparatus.
The processing circuit 24 includes an operational amplifier circuit 26, a filter circuit 27, a microcomputer 28, and a reference voltage circuit 29. The output signal of the vibration detecting element 23 is generally input from the operational amplifier circuit 26 to the microcomputer 28 via the filter circuit 27. The filter circuit 27 constitutes a bandpass filter that sets a certain frequency band in order to extract frequencies before and after the bearing natural frequency. A combination of a high-pass filter and a low-pass filter may be used.

  The microcomputer 28 is normally in a sleep state, and is preferably activated when it is received. The analog output signal of the acceleration sensor which is the vibration detecting element 23 is A / D converted inside the microcomputer 28 and then recorded in the recording means 40 as shown in FIG. Thereafter, data is transferred from the recording means 40 to the recording medium 22. As the recording means 40, for example, a random access memory (abbreviated as RAM: Random Access Memory) capable of rewriting data is applied.

  As shown in FIG. 7, a power supply voltage is supplied to the vibration detection element 23 and the processing circuit 24. The power supply voltage is a desired voltage. Power supply bypass capacitors C1 to C4 are connected to the vibration detection element 23 and the processing circuit 24. The power supply bypass capacitors C1 to C4 are connected between the power supply line L1 and the GND line L2 for the purpose of supplying a stable power supply voltage by bypassing noise superimposed on the DC power supply and suppressing the fluctuation of the power supply voltage. The

  A power supply bypass capacitor C1 is connected between the power supply line L1 and the GND line L2 of the vibration detecting element 23. The power supply bypass capacitor C1 supplies a stable power supply voltage to the vibration detecting element 23, and suppresses fluctuations in the supplied power supply voltage. An analog output signal from the vibration detection element 23 is input to one input terminal of the operational amplifier 31 in the operational amplifier circuit 26 via the resistor 30.

  A power supply bypass capacitor C2 is connected between the power supply line L1 and the GND line L2 of the operational amplifier 31. The power supply bypass capacitor C2 supplies a stable power supply voltage with noise bypassed to the operational amplifier circuit 26, and suppresses fluctuations in the supplied power supply voltage. An output signal from the operational amplifier 31 is input to the other input terminal via a capacitor 32 and a resistor 33 connected in parallel to the capacitor 32. The operational amplifier 31 amplifies and outputs a difference between inputs (inverted input and non-inverted input) to two input terminals.

  The amplified output signal is input to one input terminal of the operational amplifier 36 in the filter circuit 27 via the resistors 34 and 35 connected in series. A power supply bypass capacitor C3 is connected between the power supply line L1 and the GND line L2 of the operational amplifier 36. The power supply bypass capacitor C3 supplies a stable power supply voltage with noise bypassed to the filter circuit 27, and suppresses fluctuations in the supplied power supply voltage. The output signal from the operational amplifier 36 is input to the other input terminal and is fed back between the resistors 34 and 35 via the capacitor 37.

  The filter circuit 27 extracts only a predetermined frequency band corresponding to the natural vibration of the bearing and removes an unnecessary frequency band. During normal operation of the bearing, natural vibrations of the bearing occur as the rolling element passes through.However, if an abnormality occurs on the rolling surface of the bearing, vibration occurs at the passing period of the rolling element according to the bearing rotation speed. Peaks are superimposed. Therefore, by removing or attenuating frequency components other than the natural vibration component of the bearing by the filter circuit 27 with respect to the output signal from the operational amplifier circuit 26, the frequency component at the time of abnormality can be accurately extracted. The bearing rotational speed is determined so as to correspond to the rotational speed of the drive motor of the railway vehicle, for example.

  The analog output signal that has passed through the filter circuit 27 is input to the microcomputer 28 via the resistor 38 and the like. In the microcomputer 28, the analog output signal is temporarily recorded in the recording means 40 (FIG. 3) after A / D conversion. A reference voltage circuit 29 is connected to the microcomputer 28 so that an excessive voltage is not applied. A power supply bypass capacitor C4 is connected between the power supply line L1 and the GND line L2 of the reference voltage circuit 29. The power supply bypass capacitor C4 supplies a stable power supply voltage with noise bypassed to the reference voltage circuit 29, and suppresses fluctuations in the supplied power supply voltage.

  As shown in FIG. 3, the detection data detected by the vibration detection means 15 is recorded in the recording means 40 of the microcomputer 28 (FIG. 7) in the vibration detection device 15, and then measurement is started via the electric wire 16. It is transferred to the command transmission / reception device 13. The microcomputer 28 (FIG. 7) in each vibration detection device 15 stores an ID associated with each vibration detection device, that is, each child device set, and detection data is transferred together with this ID.

  The data collection device 45 is installed at a location away from the railway vehicle, for example, in the vicinity of the traveling rail 20 (FIG. 8) and ahead of the point portion Pt (FIG. 8) in the vehicle traveling direction. The data collection device 45 includes an antenna 45 a that receives the detection data transmitted from the measurement start command transmission / reception device 13. When the measurement start command transmission / reception device 13 passes in the vicinity of the data collection device 45, the data collection device 45 receives and collects detection data wirelessly via the antenna 45a.

  Thereafter, the detected data and the ID are transmitted to the data storage server 46 through the telephone line 48, the repeater 49, and the like, if necessary, and recorded. The analysis device 6 determines the abnormality of each rolling bearing from the detection data and ID transmitted from the data storage server 46. The analysis device 6 includes a diagnosis unit 50, a storage unit 51, and a display unit 52.

  The diagnosis unit 50 diagnoses that the bearing is abnormal when the analysis value obtained by frequency analysis of the detection data is equal to or greater than the threshold value, and diagnoses that the bearing is normal when the analysis value is less than the threshold value. The storage unit 51 stores the analysis result diagnosed by the diagnosis unit 50. The display unit 52 displays the analysis result diagnosed by the diagnosis unit 50. The data storage server 46 may transmit and record the analysis result diagnosed by the diagnosis unit 50 together with the ID.

  In this case, for example, the data storage server 46 is accessed using various electronic devices such as a personal computer, a mobile phone, a smartphone, or a PDA, and the analysis result recorded in the data storage server 46 is browsed for each ID. You can confirm. As a result of this analysis, not only the administrator who manages this apparatus, but also the administrator who manages the peripheral devices including this railway vehicle accesses the data storage server 46 using the above-mentioned various devices to obtain bearing replacement information, etc. Maintenance information and information ordering arrangements can be easily obtained.

  FIG. 8 is a diagram illustrating an example of vibration measurement by the bearing abnormality detection device. In this example, one point portion Pt is provided in the travel range of the railway vehicle 1. When the railway vehicle 1 is inspected, the power of the plurality of slave sets 5A to 5F and the data collection device 45 are all turned on before the railway vehicle 1 travels at the vehicle station (vehicle base).

  Next, the axle box which is the first vibration detection target of the carriage 2 in the leading vehicle 1 travels at a vehicle speed (for example, 25 km / h or more and 35 km / h or less) determined by traveling the rail vehicle 1 along the traveling rail 20. Using the passage of the point portion Pt of the rail 20 as a trigger for starting vibration measurement, the vibration measuring device 15 of the first slave unit set 5A detects the vibration of the first bearing after passing the point portion Pt.

  Further, the measurement start command transmission / reception device 13 of the first handset set 5A transmits a radio wave of a detection start signal to the measurement start command transmission / reception device 13 of the second handset set 5B. Thereby, the vibration detection device 15 of the second handset set 5B detects the vibration of the next bearing. Similarly, the preceding measurement start command transmission / reception device 13 transmits a radio wave of the detection start signal to the measurement start command transmission / reception devices 13 of the subsequent slave sets 5C, 5D, 5E, 5F, and sequentially detects each vibration detection device 15. Detects the vibration of the bearing.

  In addition, after the second handset 5B, the vibration is measured by a time lag determined in advance from the travel speed of the vehicle and the distance between the handset sets so as to measure the vibration at a position not hitting the point portion Pt. May be. Or you may measure a vibration also at the timing which passed each point part Pt of the traveling rail 20 similarly to the 1st subunit | mobile_unit set 5A also after the 2nd subunit | mobile_unit set 5B.

  The detection data detected by each vibration detection device 15 and the ID for each slave set 5 are recorded in the recording means of the microcomputer in each vibration detection device 15 and then recorded in the vibration data in the measurement start command transmission / reception device 13. Forwarded to the department. The measurement start command transmission / reception device 13 is held in a state where radio waves are transmitted from the antenna 14.

  Thereafter, when the measurement start command transmission / reception device 13 passes through the vicinity of the data collection device 45 installed in front of the vehicle traveling direction, the data collection device 45 receives and collects the detection data and ID wirelessly. Alternatively, when the measurement start command transmission / reception device 13 passes in the vicinity of the data collection device 45, the measurement start command transmission / reception device 13 transmits the detection data and the ID at the timing when the data transmission command is received from the data collection device 45. good.

  According to the railway vehicle bearing abnormality detection device described above, since a vibration measurement value of the rolling bearing 17 is subsequently started based on a vibration detection value of a certain value or more such as a joint, a command device for starting vibration measurement is separately provided. There is no need to provide it. Therefore, the configuration of the entire apparatus can be simplified and the cost can be reduced.

  Further, the vibration detection device 15 takes in a detection value detected after a detection value equal to or greater than a certain value such as a joint as vibration data of the rolling bearing 17, thereby causing an extra vibration waveform other than the vibration waveform due to the bearing abnormality to appear. Therefore, the detection data that is the vibration waveform due to the bearing abnormality is clarified. Accordingly, it is possible to accurately determine the abnormality of the bearing 17 for the railway vehicle by excluding the vibration waveform caused by passing through the joint or the like of the traveling rail 20.

  The data collection device 45 receives and collects the detection data transmitted from the measurement start command transmission / reception device 13 which is a detection data transmission device. There is no need for construction or data retrieval. Therefore, the detection data can be easily extracted and the cost can be reduced. Since the detection data is collected in the data collection device 45 together with the ID associated with each slave unit set, it is possible to immediately identify which rolling bearing 17 incorporated in any axle box 3 is abnormal.

Another embodiment will be described.
In the following description, the same reference numerals are given to the portions corresponding to the matters described in the preceding forms in each 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.

  FIG. 9 is a diagram illustrating an example of vibration measurement by a bearing abnormality detection device according to another embodiment. In this example, two point portions Pt are provided in the travel range of the railway vehicle 1 and one vehicle 1 enters between them. After the first axle box of the leading vehicle bogie passes the first point portion Pt of the traveling rail 20, the vibration measuring device of the first slave unit set 5A attached to the hexagon bolt of the axle box is the first bearing. Measure vibration.

  In this case, as in FIG. 8, a detection start signal is transmitted in the order of the first handset 5A → second handset 5B → third handset 5C → fourth handset 5D to detect each vibration. Set to start measuring the target. Further, the fifth handset 5E in the succeeding vehicle 1 is set to start measurement after passing through the first point portion Pt and to transmit a detection start signal to the sixth handset 5F. . By setting in this way, the measurement of each of the child device sets 5A to 5F is performed at a substantially close position along the traveling rail 20.

  In addition, each subunit | mobile_unit set 5A-5F which passed the 1st point part Pt and measured the vibration of the bearing passes the 2nd point part Pt after that, but passes the 1st point part Pt. Since the vibration of the bearing is measured later, the vibration of the bearing is not measured after passing through the second point portion Pt.

  When each of the handset sets 5A to 5F measures bearing vibration, it is set so that it is not affected by disturbance vibration without being hit by a predetermined traveling speed and the joint of the traveling rail 20 or the point portion Pt. Further, for example, after the railway vehicle 1 is set at a constant vehicle speed by a drive motor, the drive motor is deenergized, and the railway vehicle 1 is caused to travel with inertial force. In this case, when the vibration of each rolling bearing 17 (FIG. 5) is detected, there is no fear that the vibration measuring device receives electromagnetic noise generated by the drive motor.

  The bearing vibration data recorded in the data collecting device 45 is transferred together with the ID to a data storage server 46 which is a storage means, as shown in FIG. 3, via radio such as a telephone line. In the data storage server 46, the relationship between the ID of the bearing vibration data, the bearing model number, the axle box, the vehicle number, and the measurement date is stored in association with the bearing vibration data. The bearing vibration data and ID stored in the data storage server 46 can be transmitted to the analysis device 6 using, for example, a wireless LAN, Wi-Fi, Bluetooth (registered trademark), ZigBee module, or the like.

  Although the vibration measurement start means is provided in the measurement start command transmission / reception device of each slave unit set, it is not limited to this example. For example, vibration measurement starting means may be provided in the vibration detection device of each slave unit set.

DESCRIPTION OF SYMBOLS 1 ... Railway vehicle 2 ... Carriage 3 ... Shaft box 6 ... Analysis apparatus 13 ... Measurement start command transmission / reception apparatus (detection data transmission apparatus)
DESCRIPTION OF SYMBOLS 15 ... Vibration detection apparatus 17 ... Rolling bearing 45 ... Data collection apparatus 46 ... Data storage server (storage means)
50 ... diagnosis unit 51 ... storage unit 52 ... display unit 53 ... vibration measurement starting means

Claims (7)

A railway vehicle bearing abnormality detection device that detects an abnormality of a plurality of rolling bearings incorporated in an axle box provided on a railway vehicle carriage,
A vibration detecting device for detecting either one or both of vibration of the rolling bearing and disturbance vibration;
When monitoring the detection value of the vibration detection device and determining that the detection value is equal to or greater than a predetermined value, vibration measurement starting means for starting vibration measurement of the rolling bearing;
An analyzer for judging abnormality of the rolling bearing from the captured vibration data;
A bearing abnormality detecting device for railway vehicles, comprising: In the railway vehicle bearing abnormality detection device according to claim 1, a detection data transmission device that transmits detection data detected by the vibration detection device;
A data collection device that is installed in the vicinity of a traveling rail on which the railway vehicle travels, receives and collects detection data transmitted from the detection data transmission device, and
A railway vehicle bearing abnormality detection device further provided.   The bearing abnormality detection device for a railway vehicle according to claim 2, wherein the data collection device receives and collects the detection data together with an ID associated with each vibration detection device.   The railway vehicle bearing abnormality detection device according to claim 3, further comprising a data storage server that transmits the detection data and the ID from the data collection device via a telephone line, and the analysis device includes the data storage server. A bearing abnormality detection device for a railway vehicle that determines an abnormality of each rolling bearing from the detection data and the ID transmitted from the railway. The bearing abnormality detecting device for a railway vehicle according to claim 4,
The analysis device includes:
A diagnosis unit that diagnoses a bearing abnormality when the analysis value obtained by frequency analysis of the detection data is equal to or greater than a set threshold value for vibration, and diagnoses that the bearing is normal when less than the threshold value;
A storage unit for storing the analysis result diagnosed by the diagnosis unit;
A display unit for displaying the analysis result diagnosed by the diagnostic unit;
Have
A bearing abnormality detecting device for a railway vehicle that transmits an analysis result diagnosed by the diagnostic unit together with the ID to the data storage server.   6. The railway vehicle bearing abnormality detection device according to claim 5, further comprising an electronic device for browsing the analysis result recorded in the data storage server for each ID.   The railway vehicle bearing abnormality detection device according to any one of claims 3 to 6, wherein the relationship between the ID of the detection data and the bearing model number, axle box, vehicle number, and measurement date is A bearing abnormality detecting device for a railway vehicle provided with a storage means for storing data corresponding to detection data.

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