JP2006092412A - Rotation supporting device with sensor - Google Patents

Rotation supporting device with sensor Download PDF

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JP2006092412A
JP2006092412A JP2004279161A JP2004279161A JP2006092412A JP 2006092412 A JP2006092412 A JP 2006092412A JP 2004279161 A JP2004279161 A JP 2004279161A JP 2004279161 A JP2004279161 A JP 2004279161A JP 2006092412 A JP2006092412 A JP 2006092412A
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sensor
rotation
data representing
rotational speed
raceway
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Ikunori Sakatani
郁紀 坂谷
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To realize a configuration in which the wiring job of a harness 32 is simplified and weight reduction is attained. <P>SOLUTION: A rotation speed detection sensor 15a is a digital system sensor for sending data to indicate a speed as the detection signal of a pulse string. Also, a vibration sensor or temperature sensor which is different from the rotation speed detection sensor 15a is an analog system sensor for sending data to indicate a measurement value as an analog detection signal. The data to indicate the measurement value of the other sensor are superimposed upon the data of the pulse string to indicate the speed of the rotation speed detection sensor 15a as a duty ratio of the pulse string. As a result, the detection signal can be sent to a controller installed at a position away from the respective sensors with a single harness 23 though usually two sets of harnesses are necessary. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明に係るセンサ付回転支持装置は、自動車や鉄道車両等の各種車両の車輪、或いは、各種工作機械の主軸や各種産業機械の回転軸等を回転自在に支持すると共に、この回転支持部の状態を検出する為に利用する。   The rotation support device with a sensor according to the present invention rotatably supports the wheels of various vehicles such as automobiles and railway vehicles, the main shafts of various machine tools, the rotation shafts of various industrial machines, and the like. Used to detect the state.

例えば鉄道車両の走行速度を求めたり、或いは鉄道車両の車輪が偏摩耗するのを防止する為の滑走制御を行なう為には、車輪の回転速度を検出する必要がある。更には、車輪を支持する転がり軸受ユニット部分に剥離等の異常が発生した場合に、この異常が、焼き付き等の、より重大な故障に結び付くのを防止する為には、この異常に伴って生じる温度上昇や振動の増大を検知すべく、上記転がり軸受の温度や振動を検出する必要がある。この為、上記転がり軸受ユニットに、回転速度センサ、温度センサ、振動センサを組み込んだセンサ付回転支持装置により、上記車輪を軸受箱等の固定部分に対し回転自在に支持すると共に、この車輪の回転速度並びに上記転がり軸受ユニットの温度や振動を検出する事が、近年行われる様になっている。   For example, it is necessary to detect the rotational speed of the wheel in order to obtain the traveling speed of the railway vehicle or to perform sliding control for preventing uneven wear of the wheels of the railway vehicle. Furthermore, when an abnormality such as peeling occurs in the rolling bearing unit portion that supports the wheel, this abnormality is accompanied by this abnormality in order to prevent it from leading to a more serious failure such as seizure. In order to detect an increase in temperature and an increase in vibration, it is necessary to detect the temperature and vibration of the rolling bearing. For this reason, the rotation support device with a sensor in which a rotation speed sensor, a temperature sensor, and a vibration sensor are incorporated in the rolling bearing unit supports the wheel rotatably with respect to a fixed part such as a bearing box and the rotation of the wheel. In recent years, detection of speed and temperature and vibration of the rolling bearing unit has been performed.

図５〜６は、この様な事情に鑑みて考えられて特許文献１に記載された、センサ付回転支持装置の１例を示している。このセンサ付回転支持装置の場合には、車軸１の外端部を軸受箱２の内側に、複列円すいころ軸受ユニット３により回転自在に支持している。この複列円すいころ軸受ユニット３は、使用状態でも回転しない静止側軌道輪である外輪４と、使用状態で回転する回転側軌道輪である１対の内輪５、５と、これら外輪４と各内輪５、５との互いに対向する周面に存在する各外輪軌道６、６と各内輪軌道７、７との間に設けられた、それぞれが転動体である複数個の円すいころ８、８とを備える。又、上記車軸１の外端面にエンドキャップ９を、ボルト１０、１０により固定している。このエンドキャップ９は、スペーサ１１を介して、被検出部材である回転速度検出用エンコーダ１２、並びに、上記複列円すいころ軸受ユニット３を構成する上記各内輪５、５を軸方向に抑え付け、これら各部材１２、５が上記車軸１から抜け出るのを阻止している。   5-6 has shown an example of the rotation support apparatus with a sensor considered in view of such a situation, and was described in patent document 1. FIG. In the case of this rotation support device with a sensor, the outer end portion of the axle 1 is rotatably supported by the double row tapered roller bearing unit 3 inside the bearing housing 2. The double-row tapered roller bearing unit 3 includes an outer ring 4 that is a stationary raceway that does not rotate even in use, a pair of inner rings 5 and 5 that are rotary raceways that rotate in use, A plurality of tapered rollers 8, 8 provided between the outer ring raceways 6, 6 and the inner ring raceways 7, 7 existing on the circumferential surfaces facing each other with the inner rings 5, 5, respectively. Is provided. An end cap 9 is fixed to the outer end surface of the axle 1 with bolts 10 and 10. The end cap 9 presses the rotational speed detecting encoder 12 as a member to be detected and the inner rings 5 and 5 constituting the double row tapered roller bearing unit 3 in the axial direction via the spacer 11. These members 12 and 5 are prevented from coming out of the axle 1.

又、上記回転速度検出用エンコーダ１２は、例えば磁性材製の環状部材の外周面を歯車状に形成する事により、或いは、Ｓ極とＮ極とを円周方向に交互に、且つ、等間隔に配置した永久磁石により外周面を構成する事により（円周方向に間隔を空けて永久磁石を設けても良い）、被検出面であるその外周面の特性を円周方向に関して交互に変化させている。又、上記複列円すいころ軸受ユニット３を構成する上記外輪４に欠円環状のセンサユニット１３を、支持環１４を介して支持している。このセンサユニット１３は、回転速度センサである回転速度検出用センサ１５を、その検出部を上記回転速度検出用エンコーダ１２の外周面（被検出面）に近接対向させた状態で支持している。又、上記センサユニット１３内や上記支持環１４等に、図示しない振動センサや温度センサを設置している。   The encoder 12 for detecting the rotational speed is formed, for example, by forming the outer peripheral surface of an annular member made of a magnetic material in a gear shape, or alternatively, the S pole and the N pole are alternately arranged at equal intervals in the circumferential direction. By configuring the outer peripheral surface with permanent magnets arranged on the surface (permanent magnets may be provided at intervals in the circumferential direction), the characteristics of the outer peripheral surface that is the detected surface are alternately changed in the circumferential direction. ing. Further, a sensor unit 13 having an annular shape is supported by a support ring 14 on the outer ring 4 constituting the double row tapered roller bearing unit 3. This sensor unit 13 supports a rotational speed detection sensor 15 which is a rotational speed sensor in a state where its detection portion is closely opposed to the outer peripheral surface (detected surface) of the rotational speed detection encoder 12. A vibration sensor and a temperature sensor (not shown) are installed in the sensor unit 13 and the support ring 14.

上述の図５〜６に示した様なセンサ付転がり軸受ユニットの使用時には、上記回転速度検出用センサ１５が、上記車軸１の回転速度に比例した周波数で変化する検出信号を出力するので、この検出信号の周波数或いは変化の周期により、上記回転速度を求められる。求めた回転速度は、前記滑走制御等に利用する。又、上記振動センサにより、上記車軸１の回転に伴って上記複列円すいころ軸受ユニット３部分で発生する振動を求められる。更に、上記温度センサにより、上記複列円すいころ軸受ユニット３を構成する外輪４等の温度を求められる。そこで、上記振動或いはこの温度が所定の閾値よりも大きくなった場合には、上記複列円すいころ軸受ユニット３の転がり接触部を構成する各面の何れかの部分に、剥離等の損傷が発生したとして、運転者に注意を促す警報を発する等により、焼き付き等のより重大な故障の発生を防止する。   When the sensor-equipped rolling bearing unit as shown in FIGS. 5 to 6 is used, the rotational speed detection sensor 15 outputs a detection signal that changes at a frequency proportional to the rotational speed of the axle 1. The rotational speed can be obtained from the frequency of the detection signal or the period of change. The obtained rotation speed is used for the sliding control or the like. The vibration sensor can determine the vibration generated in the double-row tapered roller bearing unit 3 as the axle 1 rotates. Further, the temperature of the outer ring 4 constituting the double row tapered roller bearing unit 3 can be obtained by the temperature sensor. Therefore, when the vibration or the temperature becomes higher than a predetermined threshold, damage such as peeling occurs in any part of each surface constituting the rolling contact portion of the double row tapered roller bearing unit 3. Therefore, the occurrence of a more serious failure such as burn-in is prevented by issuing an alarm to alert the driver.

尚、上記回転速度検出用センサ１５は、単一で設置する他、円周方向に関して位相が異なる２個所位置（例えば被検出部の１ピッチの４分の１分相互に離間した位置）に設ける事により、位相が約９０度異なる信号を生成する様にし、両回転速度検出用センサの検出信号の位相に基づいて、上記車軸１の回転方向を判別する場合もある。何れの場合でも、上記回転速度検出用センサ１５の検出信号は、上記回転速度に比例した周波数のパルスを発生するディジタル信号である場合と、この回転速度に比例した周波数で正弦波的に変化するアナログ信号である場合とがある。前者は、永久磁石と、ホールＩＣや磁気抵抗素子等の磁気検出素子と、波形成形回路とを組み合わせたアクティブ型のセンサの場合に多い。これに対して、後者は、永久磁石とポールピースとコイルとを組み合わせた、パッシブ型のセンサに多い。   The rotational speed detection sensor 15 is not only installed as a single unit, but also at two positions with different phases in the circumferential direction (for example, positions separated from each other by a quarter of one pitch of the detected portion). In some cases, signals having phases different from each other by about 90 degrees are generated, and the rotational direction of the axle 1 may be determined based on the phases of the detection signals of both rotational speed detection sensors. In any case, the detection signal of the rotational speed detection sensor 15 is a digital signal that generates a pulse having a frequency proportional to the rotational speed, and changes sinusoidally at a frequency proportional to the rotational speed. It may be an analog signal. The former is often the case of an active sensor that combines a permanent magnet, a magnetic detection element such as a Hall IC or a magnetoresistive element, and a waveform shaping circuit. On the other hand, the latter is often a passive sensor that combines a permanent magnet, a pole piece, and a coil.

上述の様な回転速度検出センサや振動センサ、温度センサ等の複数のセンサから出力されるそれぞれの検出信号は、これら各センサから離れた部分に設置された制御器に送る必要がある。例えば、鉄道車両には、多数の車輪を支持する為に多数の転がり軸受ユニットが存在する。又、自動車の場合でも、４個の車輪を支持する為に４個の転がり軸受ユニットが存在する。そして、これら各転がり軸受ユニットに、それぞれ複数個ずつ組み込まれたセンサから、それぞれ車体側に設置した制御器に向けて、測定値を表す（或いは閾値を越えたか否かを表す）信号を送る必要がある。工作機械や産業機械の回転支持部に組み込んだ転がり軸受ユニットの場合も同様である。   Each detection signal output from a plurality of sensors such as a rotation speed detection sensor, a vibration sensor, and a temperature sensor as described above needs to be sent to a controller installed in a part away from each of these sensors. For example, a railway vehicle has a large number of rolling bearing units to support a large number of wheels. Further, even in the case of an automobile, there are four rolling bearing units for supporting four wheels. Then, it is necessary to send a signal indicating the measured value (or indicating whether or not the threshold value is exceeded) from a plurality of sensors incorporated in each rolling bearing unit to the controller installed on the vehicle body side. There is. The same applies to a rolling bearing unit incorporated in a rotation support part of a machine tool or industrial machine.

上述の様に、多数のセンサの検出信号を、それぞれ別個のハーネス（＝信号線）、或いは複数本のハーネスを束ねたケーブルにより上記制御器に送る様にした場合、必要となるハーネス延いてはケーブルの数が多くなり、配線作業の煩雑化や重量の増大を招く事が避けられない。この様な事情に鑑みて、例えば重量の低減を図るべく、上記ハーネスやケーブルを細く（小径化）する事が考えられる。但し、この様にハーネスやケーブルを細くすると、これらハーネスやケーブルの強度を確保しにくくなり、これらハーネスやケーブルの断線を生じ易くなる可能性がある。この為、配線作業の容易化や重量の低減を図る上で、上記ハーネス延いてはケーブルの数を低減する事が望まれている。   As described above, when the detection signals of a large number of sensors are sent to the controller using separate harnesses (= signal lines) or cables in which a plurality of harnesses are bundled, the necessary harnesses should be extended. It is inevitable that the number of cables will increase and the wiring work will become complicated and increase in weight. In view of such circumstances, for example, in order to reduce the weight, it is conceivable to make the harness or the cable thinner (smaller diameter). However, if the harnesses and cables are thinned in this way, it is difficult to ensure the strength of these harnesses and cables, and there is a possibility that these harnesses and cables are likely to be disconnected. For this reason, in order to facilitate the wiring work and reduce the weight, it is desired to reduce the number of harnesses and cables.

特開２０００−４３７２３号公報JP 2000-43723 A

本発明のセンサ付回転支持装置は、上述の様な事情に鑑み、ハーネス延いてはケーブルの数を少なくし、配線作業の容易化並びに重量の低減を図れる構造を実現すべく発明したものである。   The rotation support device with a sensor according to the present invention has been invented in order to realize a structure capable of reducing the number of harnesses and cables, facilitating the wiring work, and reducing the weight in view of the circumstances as described above. .

本発明のセンサ付回転支持装置は、静止側軌道輪と、回転側軌道輪と、複数個の転動体と、被検出部材と、回転速度センサと、別のセンサとを備える。
このうちの静止側軌道輪は、使用状態でも回転しないものである。
又、上記回転側軌道輪は、使用状態で回転するものである。
又、上記各転動体は、上記静止側軌道輪と回転側軌道輪との互いに対向する周面に存在する静止側軌道と回転側軌道との間に設けられている。
又、上記被検出部材は、上記各転動体又は上記回転側軌道輪と共に回転するものであり、被検出面の特性を円周方向に関して交互に変化させている。
又、上記回転速度センサは、上記被検出部材の被検出面にその検出部を対向させている。
更に、上記別のセンサは、上記回転速度センサの他に設けられたものであり、回転支持部の状態を測定する。 The rotation support device with a sensor according to the present invention includes a stationary side race ring, a rotation side race ring, a plurality of rolling elements, a detected member, a rotation speed sensor, and another sensor.
Of these, the stationary-side track ring does not rotate even in use.
Moreover, the said rotation side track ring rotates in a use condition.
Further, each of the rolling elements is provided between a stationary side raceway and a rotational side raceway that exist on the circumferential surfaces of the stationary side raceway and the rotation side raceway that face each other.
The detected member rotates together with the rolling elements or the rotating raceway, and the characteristics of the detected surface are alternately changed in the circumferential direction.
Further, the rotation speed sensor has a detection portion opposed to a detection surface of the detection member.
Further, the another sensor is provided in addition to the rotation speed sensor, and measures the state of the rotation support portion.

特に、本発明のセンサ付回転支持装置に於いては、上記回転速度センサを、速度を表すデータをパルス列の検出信号として送り出すディジタル式のセンサとしている。又、これと共に、上記別のセンサを、測定値を表すデータをアナログ検出信号として送り出すアナログ式のセンサとしている。そして、上記別のセンサの測定値を表すデータを、上記回転速度センサの速度を表すパルス列のデータに重畳させた状態で送り出している。   In particular, in the rotation support device with a sensor of the present invention, the rotation speed sensor is a digital sensor that sends data representing the speed as a detection signal of a pulse train. At the same time, the other sensor is an analog sensor that sends data representing a measured value as an analog detection signal. Then, the data representing the measured value of the other sensor is sent out in a state of being superimposed on the pulse train data representing the speed of the rotational speed sensor.

上述の様に構成する本発明のセンサ付回転支持装置は、回転速度センサとは別のセンサの測定値を表すアナログデータを、この回転速度センサの速度を表すパルス列のディジタルデータに重畳させた状態で送り出す為、ハーネス（＝信号線）の数を低減できる。即ち、上記回転速度センサと上記別のセンサとの２つのセンサからそれぞれ送り出される検出信号を、２本のハーネスを必要とするところを１本のハーネスで制御器に送る事ができる。この為、必要なハーネスの数を半分にできると共に、このハーネスを束ねたケーブルの小径化、軽量化、延いてはこのケーブルの数を低減する事ができ、配線作業の容易化並びに重量の低減を図れる。   The rotation support device with a sensor according to the present invention configured as described above is a state in which analog data representing a measurement value of a sensor different from the rotation speed sensor is superimposed on digital data of a pulse train representing the speed of the rotation speed sensor. The number of harnesses (= signal lines) can be reduced because the wire is sent out at That is, the detection signals sent from the two sensors, that is, the rotational speed sensor and the other sensor, can be sent to the controller using one harness when two harnesses are required. As a result, the number of harnesses required can be halved, the cable bundled with the harnesses can be reduced in diameter and weight, and the number of cables can be reduced, making wiring work easier and reducing weight. Can be planned.

本発明を実施する場合に好ましくは、請求項２に記載した様に、回転速度センサの速度を表すパルス列のデータに、この回転速度センサとは別のセンサの測定値を表すデータを、上記パルス列のデューティ比として重畳させる。即ち、上記別のセンサの測定値を表すデータを、上記回転センサの速度を表すパルス列中に、１パルス当たりの高位（又は低位）の比（＝デューティ比）として、この比と測定値とを対応させた状態で重畳させる。この場合に好ましくは、上記別のセンサが検出する測定値を、回転支持部の振動の大きさ（請求項３）、或いは、この回転支持部の温度（請求項４）とする。
この様に構成すれば、複雑な装置を必要とする事なく、上記別のセンサの測定値（回転支持部の振動の大きさ或いは温度）を表すアナログデータを、上記回転速度センサの速度を表すパルス列のディジタルデータに重畳させる事ができる。又、これと共に、制御器側でも複雑な装置を必要とする事なく、上述の様に重畳させたディジタルデータを、それぞれの測定値（速度と振動の大きさ或いは温度と）を表すデータに分離させる事ができる。 When the present invention is implemented, preferably, as described in claim 2, data representing a measured value of a sensor other than the rotational speed sensor is included in the pulse train data representing the speed of the rotational speed sensor. The duty ratio is superimposed. That is, the data representing the measurement value of the other sensor is used as a high (or low) ratio (= duty ratio) per pulse in the pulse train representing the speed of the rotation sensor. Superimpose in the corresponding state. In this case, preferably, the measurement value detected by the other sensor is the magnitude of vibration of the rotation support part (Claim 3) or the temperature of the rotation support part (Claim 4).
If comprised in this way, the analog data showing the measured value (the magnitude | size or temperature of a vibration of a rotation support part) of said another sensor will represent the speed of the said rotational speed sensor, without requiring a complicated apparatus. It can be superimposed on the digital data of the pulse train. Along with this, the digital data superimposed as described above is separated into data representing each measured value (speed and magnitude of vibration or temperature) without requiring a complicated device on the controller side. You can make it.

図１〜３は、本発明の実施例１を示している。軸受箱２ａの内側に回転軸１６の外端部（図１の右端部）を、それぞれが転がり軸受である１対の玉軸受１７、１７により回転自在に支持している。これら各玉軸受１７、１７はそれぞれ、外輪１８、１８と、内輪１９、１９と、複数個の玉２０、２０とを備える。このうちの各外輪１８、１８は、使用状態でも回転しない静止側軌道輪であり、内周面に静止側軌道面である外輪軌道６、６を有する。又、上記各内輪１９、１９は、使用状態で回転する回転側軌道輪であり、外周面に回転側軌道面である内輪軌道７、７を有する。又、上記各玉２０、２０は、それぞれが球状に形成された転動体であり、上記各外輪１８、１８と各内輪１９、１９との互いに対向する周面に存在する上記各外輪軌道６、６と各内輪軌道７、７との間に、それぞれ複数個ずつ設けられている。   1-3 show Example 1 of the present invention. An outer end portion (right end portion in FIG. 1) of the rotary shaft 16 is rotatably supported inside the bearing housing 2a by a pair of ball bearings 17 and 17 each of which is a rolling bearing. Each of these ball bearings 17 and 17 includes outer rings 18 and 18, inner rings 19 and 19, and a plurality of balls 20 and 20. Each of the outer rings 18 and 18 is a stationary raceway that does not rotate even in use, and has outer raceways 6 and 6 that are stationary raceways on the inner peripheral surface. Each of the inner rings 19, 19 is a rotating raceway that rotates in use, and has an inner raceway 7, 7 that is a rotating raceway on the outer peripheral surface. Each of the balls 20 and 20 is a rolling element formed in a spherical shape, and the outer ring raceway 6 and the outer ring raceway 6 that exist on the circumferential surfaces of the outer rings 18 and 18 and the inner rings 19 and 19 facing each other. 6 and a plurality of inner ring raceways 7 and 7 are provided.

又、上記各内輪１９、１９と共に回転する上記回転軸１６の外端部に、被検出部材である回転速度検出用エンコーダ１２ａを支持している。この回転速度検出用エンコーダ１２ａは、磁性材製で、外周面を歯車状に形成する事により、被検出面であるこの外周面の特性を円周方向に関して交互に且つ等間隔で変化させている。尚、この様な歯車状とした回転速度検出用エンコーダ１２ａに代えて、被検出面である外周面を、Ｎ極とＳ極とを交互に、且つ、等間隔に配置した永久磁石により構成したものとしても良い。又、上記軸受箱２ａの内外両周面を貫通する状態で形成した支持孔２１に、センサユニット２２を支持している。そして、このセンサユニット２２の先端部（図１の下端部）で、上記回転速度検出用エンコーダ１２ａの外周面（被検出面）と対向する部分に、回転速度検出用センサ１５ａを支持している。又、これと共に、上記センサユニット２２内に、上記回転軸１６の回転に伴って上記各転がり軸受１７、１７部分で発生する振動を求める為の振動センサ、或いは、上記軸受箱２ａ内の温度を求める為の温度センサを設置している（図示省略）。   A rotational speed detecting encoder 12a, which is a member to be detected, is supported on the outer end portion of the rotating shaft 16 that rotates together with the inner rings 19 and 19. This encoder 12a for detecting the rotational speed is made of a magnetic material, and by forming the outer peripheral surface in a gear shape, the characteristics of the outer peripheral surface, which is the detected surface, are changed alternately and at equal intervals in the circumferential direction. . Instead of such a gear-shaped encoder 12a for detecting the rotational speed, the outer peripheral surface, which is the detected surface, is composed of permanent magnets in which N poles and S poles are alternately arranged at equal intervals. It is good as a thing. The sensor unit 22 is supported in a support hole 21 formed so as to penetrate both the inner and outer peripheral surfaces of the bearing box 2a. And the rotational speed detection sensor 15a is supported by the front-end | tip part (lower end part of FIG. 1) of this sensor unit 22 in the part facing the outer peripheral surface (detected surface) of the said rotational speed detection encoder 12a. . Along with this, a vibration sensor for obtaining vibrations generated in the respective rolling bearings 17 and 17 with the rotation of the rotating shaft 16 in the sensor unit 22 or the temperature in the bearing box 2a. A temperature sensor is provided for this purpose (not shown).

更に、本実施例の場合は、上記回転速度検出用センサ１５ａを、速度を表すデータをパルス列の検出信号として送り出すディジタル式のセンサとしている。又、これと共に、この回転速度検出用センサ１５ａとは別のセンサである上記振動センサ或いは温度センサを、測定値（振動の大きさ或いは温度）を表すデータをアナログ検出信号として送り出すアナログ式のセンサとしている。そして、この別のセンサ（振動センサ或いは温度センサ）の測定値を表すデータを、上記回転速度検出用センサ１５ａの速度を表すパルス列のデータに重畳させた状態で、１本のハーネス（信号線）２３により、上記センサユニット２２から離れた位置に設置された制御器（図示省略）に送り出している。本実施例の場合には、上記回転速度検出用センサ１５ａの速度を表すパルス列のデータに、この回転速度検出用センサ１５ａとは別のセンサの測定値を表すデータを、上記パルス列のデューティ比として重畳させている。   Further, in the case of the present embodiment, the rotational speed detection sensor 15a is a digital sensor that sends data representing the speed as a pulse train detection signal. At the same time, the vibration sensor or temperature sensor, which is a sensor different from the rotation speed detection sensor 15a, sends out data representing the measured value (vibration magnitude or temperature) as an analog detection signal. It is said. Then, a single harness (signal line) in a state where the data representing the measurement value of the other sensor (vibration sensor or temperature sensor) is superimposed on the pulse train data representing the speed of the rotational speed detection sensor 15a. 23 is sent to a controller (not shown) installed at a position away from the sensor unit 22. In the case of the present embodiment, data representing a measured value of a sensor other than the rotational speed detection sensor 15a is used as the duty ratio of the pulse train in the pulse train data representing the speed of the rotational speed detection sensor 15a. Superimposed.

図２は、上記回転速度検出用センサ１５ａから送り出されて、上記ハーネス２３内を流れる信号（パルス列のデータ）の１例を示している。上記回転速度検出用センサ１５ａが送り出す出力信号のパルス列のデューティ比、即ち、１パルスＴｂ当たりの高位Ｔａ｛又は低位（Ｔｂ−Ｔａ）｝の比Ｔａ／Ｔｂは、特に上記出力信号を加工しない限り、前記回転速度検出用エンコーダ１２ａの被検出面の特性により決まる。例えば、歯車の凹凸或いはＳ極とＮ極とを円周方向に関して交互に且つ等間隔で配置した場合には、上記回転速度検出用エンコーダ１２ａの被検出面の特性は、円周方向に関して交互に且つ等間隔で変化する。この為、この回転速度検出用エンコーダ１２ａが回転していれば（回転軸１６の回転速度が０でなければ）、上記回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂは、０．５（５０％）となる。これに対して本実施例の場合には、上記回転速度検出用センサ１５ａの出力信号を加工する事により、上記デューティ比Ｔａ／Ｔｂを、この回転速度検出用センサ１５ａとは別のセンサである上記振動センサ或いは温度センサの測定値に応じて、図３に示す様に変化させる。   FIG. 2 shows an example of a signal (pulse train data) sent from the rotational speed detection sensor 15 a and flowing in the harness 23. The duty ratio of the pulse train of the output signal sent out by the rotational speed detection sensor 15a, that is, the ratio Ta / Tb of high order Ta {or low order (Tb-Ta)} per one pulse Tb, unless the output signal is particularly processed. It is determined by the characteristics of the surface to be detected of the rotational speed detecting encoder 12a. For example, when the unevenness of the gears or the S pole and the N pole are alternately arranged at equal intervals in the circumferential direction, the characteristics of the detection surface of the rotational speed detecting encoder 12a are alternately in the circumferential direction. And it changes at equal intervals. Therefore, if the rotation speed detection encoder 12a is rotating (if the rotation speed of the rotation shaft 16 is not 0), the duty ratio Ta / Tb of the pulse train sent out by the rotation speed detection sensor 15a is 0. 5 (50%). On the other hand, in this embodiment, the duty ratio Ta / Tb is a sensor different from the rotational speed detection sensor 15a by processing the output signal of the rotational speed detection sensor 15a. It changes as shown in FIG. 3 according to the measured value of the said vibration sensor or temperature sensor.

即ち、上記別のセンサが温度センサである場合には、同図（Ａ）に示す様に、この温度センサが測定する温度に応じて、上記回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂを変化させる。例えば、上記温度センサが測定した温度が４０℃であれば、上記回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂを０．４（４０％）にする。この様な加工は、図３に示す様な関係式を組み込んだＩＣをセンサユニット２２内に組み込む事により、容易に行なえる。尚、本実施例の場合は、上記温度センサが測定する温度の範囲を−２０℃〜１４０℃とし、この温度に対応するデューティ比Ｔａ／Ｔｂを０．１（１０％）〜０．９（９０％）としている。この様な温度の範囲と上記デューティ比Ｔａ／Ｔｂとの対応関係は、使用状態に応じて適宜設定できる。   That is, when the other sensor is a temperature sensor, the duty ratio Ta of the pulse train sent out by the rotational speed detection sensor 15a according to the temperature measured by the temperature sensor, as shown in FIG. / Tb is changed. For example, if the temperature measured by the temperature sensor is 40 ° C., the duty ratio Ta / Tb of the pulse train sent out by the rotational speed detection sensor 15a is set to 0.4 (40%). Such processing can be easily performed by incorporating an IC incorporating a relational expression as shown in FIG. In the case of this embodiment, the temperature range measured by the temperature sensor is set to −20 ° C. to 140 ° C., and the duty ratio Ta / Tb corresponding to this temperature is 0.1 (10%) to 0.9 ( 90%). The correspondence between such a temperature range and the duty ratio Ta / Tb can be appropriately set according to the use state.

又、上記別のセンサが振動センサである場合には、同図（Ｂ）に示す様に、この振動センサが測定する振動の大きさに応じて、上記回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂを変化させる。例えば、上記振動センサが測定した振動の大きさが１２Grms（Grms：重力加速度の二乗平均）であれば、上記回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂを０．６（６０％）にする。この様な加工も、上記温度を表す信号を重畳させる場合と同様に、容易に行なえる。尚、本実施例の場合は、上記振動センサが測定する振動の大きさの範囲を２Grms〜１８Grmsとし、この振動の大きさに対応するデューティ比Ｔａ／Ｔｂを０．１（１０％）〜０．９（９０％）としている。この様な振動の大きさの範囲と上記デューティ比Ｔａ／Ｔｂとの対応関係は、使用状態に応じて適宜設定できる。又、本実施例の場合は、振動の大きさをGrms値として上記デューティ比Ｔａ／Ｔｂと対応させているが、振動の時間波形の振幅値そのものを上記デューティ比Ｔａ／Ｔｂと対応させる事もできる。   When the other sensor is a vibration sensor, as shown in FIG. 4B, the pulse train sent out by the rotational speed detection sensor 15a according to the magnitude of vibration measured by the vibration sensor. The duty ratio Ta / Tb is changed. For example, if the magnitude of vibration measured by the vibration sensor is 12 Grms (Grms: root mean square of gravitational acceleration), the duty ratio Ta / Tb of the pulse train sent out by the rotational speed detection sensor 15a is 0.6 (60% ). Such processing can be easily performed as in the case where the signal representing the temperature is superimposed. In the present embodiment, the range of the magnitude of vibration measured by the vibration sensor is 2 Grms to 18 Grms, and the duty ratio Ta / Tb corresponding to this magnitude of vibration is 0.1 (10%) to 0. .9 (90%). The correspondence relationship between the range of the magnitude of vibration and the duty ratio Ta / Tb can be set as appropriate according to the use state. In the present embodiment, the magnitude of vibration is set as the Grims value and is associated with the duty ratio Ta / Tb. However, the amplitude value of the time waveform of vibration itself may be associated with the duty ratio Ta / Tb. it can.

何れにしても、上述の様に回転速度検出用センサ１５ａが送り出すパルス列のデューティ比Ｔａ／Ｔｂを、上記別のセンサである温度センサや振動センサの測定値に対応するデューティ比Ｔａ／Ｔｂとした状態で、前記ハーネス２３を通じて前記制御器に送り出す。そして、この制御器で、上記パルス列の周期Ｔｂや周波数から回転速度を求めると共に、上記パルス列のデューティ比Ｔａ／Ｔｂから温度或いは振動の大きさを求める。尚、デューティ比Ｔａ／Ｔｂを温度或いは振動の大きさを表す信号に変換するのは、図３の（Ａ）又は（Ｂ）に示す様な関係式を組み込んだＩＣを上記制御器に組み込む事により、容易に行なえる。又、上記回転速度検出用センサ１５ａが検出する回転速度は、この回転速度に比例した上記パルスの周期Ｔｂや周波数から求める為、上記デューティ比Ｔａ／Ｔｂが０（０％）或いは１（１００％）にならない限り｛検出精度や検出誤差等を考慮すると０．１（１０％）未満或いは０．９（９０％）を超えない限り｝、上記デューティ比Ｔａ／Ｔｂが何れの値であっても求める回転速度に影響する事はない。   In any case, the duty ratio Ta / Tb of the pulse train sent out by the rotational speed detection sensor 15a as described above is set to the duty ratio Ta / Tb corresponding to the measured value of the temperature sensor or the vibration sensor which is another sensor. In the state, it is sent to the controller through the harness 23. The controller obtains the rotational speed from the period Tb and frequency of the pulse train and obtains the temperature or the magnitude of vibration from the duty ratio Ta / Tb of the pulse train. The duty ratio Ta / Tb is converted into a signal representing the temperature or the magnitude of vibration by incorporating an IC incorporating a relational expression as shown in FIG. 3 (A) or (B) into the controller. This can be done easily. The rotational speed detected by the rotational speed detection sensor 15a is obtained from the pulse period Tb or frequency proportional to the rotational speed, so that the duty ratio Ta / Tb is 0 (0%) or 1 (100%). ) (In consideration of detection accuracy, detection error, etc., unless it is less than 0.1 (10%) or 0.9 (90%)), the duty ratio Ta / Tb is any value. It does not affect the required rotation speed.

上述の様な本実施例によれば、上記回転速度検出用センサ１５ａとは別のセンサである振動センサや温度センサ等の測定値を表すアナログデータを、この回転速度検出用センサ１５ａの速度を表すパルス列のディジタルデータに重畳させた状態で送り出す為、ハーネス２３の数を低減できる。即ち、上記回転速度検出用センサ１５ａと上記別のセンサとの２つのセンサからそれぞれ送り出される検出信号を、これら各センサから離れた位置に設置された制御器に、２本のハーネスを必要とするところを１本のハーネス２３で送る事ができる。又、例えば回転部材である回転軸１６の回転方向を検出自在とすべく、上記回転速度検出用センサ１５ａを１対設けた場合には、これら１対の回転速度検出用センサにそれぞれ別のセンサである振動センサと温度センサとを対応させれば、４本ハーネスを必要とするところを２本のハーネスとする事ができる。この為、必要なハーネス２３の数を半分にできると共に、このハーネス２３を束ねたケーブルの小径化、軽量化、延いてはこのケーブルの数を低減する事ができ、配線作業の容易化並びに重量の低減を図れる。   According to the present embodiment as described above, analog data representing a measured value of a vibration sensor, a temperature sensor, or the like, which is a sensor different from the rotation speed detection sensor 15a, is converted to the speed of the rotation speed detection sensor 15a. Since it sends out in the state superimposed on the digital data of the pulse train to represent, the number of the harnesses 23 can be reduced. That is, the detection signals sent from the two sensors, the rotational speed detection sensor 15a and the other sensor, require two harnesses for the controller installed at a position away from each of the sensors. However, it can be sent by one harness 23. For example, when a pair of the rotational speed detection sensors 15a is provided so that the rotational direction of the rotary shaft 16 which is a rotating member can be detected, separate sensors are used for the pair of rotational speed detection sensors. If the vibration sensor and the temperature sensor are associated with each other, the place where the four harnesses are required can be changed to two harnesses. Therefore, the number of necessary harnesses 23 can be halved, the diameter of the cable bundled with the harnesses 23 can be reduced, the weight can be reduced, and the number of cables can be reduced. Can be reduced.

尚、本実施例の場合は、被検出部材である回転速度検出用エンコーダ１２ａを回転軸１６の右端部に固定しているが、この回転速度検出用エンコーダ１２ａの設置位置は、この回転軸１６の外周面で１対の玉軸受１７、１７の間部分としても良い。又、本実施例の場合は、上記回転速度検出用エンコーダ１２ａを上記回転軸１６に固定し、この回転軸１６の回転速度を検出自在としているが、この様な構造に限定するものではない。例えば各玉２０、２０を転動自在に支持する保持器（図示省略）に速度検出用エンコーダを設け、これら各玉２０、２０の公転速度を検出する場合に本発明を適用する事もできる。又、本実施例の場合は、回転速度検出用センサとは別のセンサを振動センサ或いは温度センサとしているが、これらのセンサに限定するものではない。即ち、上記別のセンサが回転支持部の状態を測定するものであり、且つ、この別のセンサが測定値を表すデータをアナログ検出信号として送り出すアナログ式のものであれば、前述した振動センサや温度センサの場合と同様に、この別のセンサの測定値を表すデータを上記回転速度検出用センサ１５ａの速度を表すパルス列のデータに重畳させる事ができる。又、玉軸受１７、１７に代えて円すいころ軸受や、円筒ころ軸受等の他の形式の転がり軸受、更には、複列転がり軸受ユニットや車輪を支持する為のハブユニット等に、本発明を適用する事もできる。   In this embodiment, the rotational speed detection encoder 12a, which is a member to be detected, is fixed to the right end portion of the rotary shaft 16. The rotational speed detection encoder 12a is installed at the rotational shaft 16 at this position. It is good also as a part between a pair of ball bearings 17 and 17 in the outer peripheral surface of. In this embodiment, the rotational speed detecting encoder 12a is fixed to the rotary shaft 16 so that the rotational speed of the rotary shaft 16 can be detected. However, the present invention is not limited to such a structure. For example, the present invention can also be applied to a case in which a speed detecting encoder is provided in a cage (not shown) that supports the balls 20 and 20 so as to roll freely and the revolution speed of the balls 20 and 20 is detected. In the present embodiment, a sensor other than the rotational speed detection sensor is a vibration sensor or a temperature sensor, but is not limited to these sensors. That is, if the above-mentioned another sensor measures the state of the rotation support portion, and if this another sensor is an analog type that sends out data representing the measurement value as an analog detection signal, As in the case of the temperature sensor, the data representing the measurement value of the other sensor can be superimposed on the pulse train data representing the speed of the rotational speed detection sensor 15a. Further, the present invention is applied to other types of rolling bearings such as a tapered roller bearing and a cylindrical roller bearing instead of the ball bearings 17 and 17, a double row rolling bearing unit, a hub unit for supporting a wheel, and the like. It can also be applied.

図４は、本発明の実施例２を示している。本実施例の場合には、単列の玉軸受１７ａに本発明を適用している。即ち、この玉軸受１７ａは、図示しない回転軸を支持し、使用状態で回転する内輪１９と、ハウジング等の固定の部分に支持され、使用状態でも回転しない外輪１８と、この外輪１８の内周面に形成された外輪軌道６と上記内輪１９の外周面に形成された内輪軌道７との間に設けられた複数個の玉２０とを備える。そして、上記内輪１９の端部外周面に、被検出部材である回転速度検出用エンコーダ１２ｂを支持すると共に、上記外輪１８の端部開口を塞ぐカバー２４にセンサユニット２２ａを、このセンサユニット２２ａ内に設置した回転速度検出用センサ１５ｂを上記回転速度検出用エンコーダ１２ｂの被検出面（内周面）に対向する状態で支持している。又、上記センサユニット２２ａ内に、上記回転軸の回転に伴って上記玉軸受１７ａ部分で発生する振動を求める為の振動センサ、或いは、この玉軸受１７ａを構成する上記外輪１８の温度を求める為の温度センサを設置している。   FIG. 4 shows a second embodiment of the present invention. In the case of the present embodiment, the present invention is applied to the single row ball bearing 17a. That is, the ball bearing 17a supports a rotating shaft (not shown) and rotates in an in-use state, an outer ring 18 supported by a fixed portion such as a housing and not rotated in the in-use state, and an inner circumference of the outer ring 18 A plurality of balls 20 provided between the outer ring raceway 6 formed on the surface and the inner ring raceway 7 formed on the outer peripheral surface of the inner ring 19 are provided. The rotational speed detecting encoder 12b, which is a member to be detected, is supported on the outer peripheral surface of the end portion of the inner ring 19, and the sensor unit 22a is installed in the cover 24 that closes the end opening of the outer ring 18 in the sensor unit 22a. The rotational speed detection sensor 15b installed on the rotational speed detection encoder 15b is supported in a state of facing the detected surface (inner peripheral surface) of the rotational speed detection encoder 12b. Further, in the sensor unit 22a, a vibration sensor for obtaining the vibration generated in the ball bearing 17a portion with the rotation of the rotary shaft or the temperature of the outer ring 18 constituting the ball bearing 17a. The temperature sensor is installed.

この様な本実施例の場合も、上記回転速度検出用センサ１５ｂを、速度を表すデータをパルス列の検出信号として送り出すディジタル式のセンサとしている。又、これと共に、この回転速度検出用センサ１５ｂとは別のセンサである上記振動センサ或いは温度センサを、測定値（振動の大きさ或いは温度）を表すデータをアナログ検出信号として送り出すアナログ式のセンサとしている。そして、この別のセンサ（振動センサ或いは温度センサ）の測定値を表すデータを、上記回転速度検出用センサ１５ｂの速度を表すパルス列のデータに重畳させた状態で、１本のハーネス（信号線）２３により、上記センサユニット２２ａから離れた部分に設置された制御器（図示省略）に送り出している。
その他の構造及び作用は、前述した実施例１と同様であるから、重複する説明は省略する。 Also in this embodiment, the rotational speed detection sensor 15b is a digital sensor that sends data representing the speed as a pulse train detection signal. At the same time, the vibration sensor or temperature sensor, which is a sensor different from the rotational speed detection sensor 15b, sends out the data representing the measured value (vibration magnitude or temperature) as an analog detection signal. It is said. Then, a single harness (signal line) in a state where data representing the measured value of the other sensor (vibration sensor or temperature sensor) is superimposed on the pulse train data representing the speed of the rotational speed detection sensor 15b. 23 is sent out to a controller (not shown) installed in a part away from the sensor unit 22a.
Other structures and operations are the same as those of the first embodiment described above, and a duplicate description is omitted.

本発明の実施例１を示す断面図。Sectional drawing which shows Example 1 of this invention. 回転速度センサの速度を表すパルス列のデータに、別のセンサの測定値を表すデータをデューティ比として重畳させた状態を示す線図。The diagram which shows the state which superimposed the data showing the measured value of another sensor as a duty ratio on the data of the pulse train showing the speed of a rotational speed sensor. 別のセンサの測定値とデューティ比との関係を示す図で、（Ａ）は温度とデューティ比との関係を、（Ｂ）は振動の大きさとデューティ比との関係を、それぞれ示している。It is a figure which shows the relationship between the measured value of another sensor, and a duty ratio, (A) has shown the relationship between temperature and a duty ratio, (B) has each shown the relationship between the magnitude | size of a vibration, and a duty ratio. 本発明の実施例２を示す断面図。Sectional drawing which shows Example 2 of this invention. 従来構造の１例を示す断面図。Sectional drawing which shows an example of a conventional structure. 図５の右方から見た図。The figure seen from the right side of FIG.

符号の説明Explanation of symbols

１ 車軸
２、２ａ 軸受箱
３ 複列円すいころ軸受ユニット
４ 外輪
５ 内輪
６ 外輪軌道
７ 内輪軌道
８ 円すいころ
９ エンドキャップ
１０ ボルト
１１ スペーサ
１２、１２ａ、１２ｂ 回転速度検出用エンコーダ
１３ センサユニット
１４ 支持環
１５、１５ａ、１５ｂ 回転速度検出用センサ
１６ 回転軸
１７、１７ａ 玉軸受
１８ 外輪
１９ 内輪
２０ 玉
２１ 支持孔
２２、２２ａ センサユニット
２３ ハーネス
２４ カバー
DESCRIPTION OF SYMBOLS 1 Axle 2, 2a Bearing box 3 Double row tapered roller bearing unit 4 Outer ring 5 Inner ring 6 Outer ring raceway 7 Inner ring raceway 8 Tapered roller 9 End cap 10 Bolt 11 Spacer 12, 12a, 12b Rotational speed detection encoder 13 Sensor unit 14 Support ring 15, 15a, 15b Rotational speed detection sensor 16 Rotating shaft 17, 17a Ball bearing 18 Outer ring 19 Inner ring 20 Ball 21 Support hole 22, 22a Sensor unit 23 Harness 24 Cover

Claims (4)

使用状態でも回転しない静止側軌道輪と、使用状態で回転する回転側軌道輪と、これら静止側軌道輪と回転側軌道輪との互いに対向する周面に存在する静止側軌道と回転側軌道との間に設けられた複数個の転動体と、これら各転動体又は上記回転側軌道輪と共に回転する、被検出面の特性を円周方向に関して交互に変化させた被検出部材と、この被検出部材の被検出面にその検出部を対向させた回転速度センサと、この回転速度センサの他に、回転支持部の状態を測定する為の別のセンサとを備えたセンサ付回転支持装置に於いて、上記回転速度センサを、速度を表すデータをパルス列の検出信号として送り出すディジタル式のセンサとすると共に、上記別のセンサを、測定値を表すデータをアナログ検出信号として送り出すアナログ式のセンサとし、この別のセンサの測定値を表すデータを、上記回転速度センサの速度を表すパルス列のデータに重畳させた状態で送り出す事を特徴したセンサ付回転支持装置。   A stationary raceway that does not rotate even in use, a rotary raceway that rotates in use, and a stationary raceway and a rotary raceway that exist on the mutually opposing circumferential surfaces of the stationary raceway and the rotary raceway. A plurality of rolling elements provided between the members, a detected member that rotates together with each of the rolling elements or the rotation-side raceway, and whose detected surface characteristics are alternately changed in the circumferential direction, and the detected member In a rotation support device with a sensor, comprising: a rotation speed sensor having a detection portion opposed to a detected surface of a member; and another sensor for measuring the state of the rotation support portion in addition to the rotation speed sensor. The rotational speed sensor is a digital sensor that sends data representing speed as a pulse train detection signal, and the other sensor is an analog sensor that sends data representing a measured value as an analog detection signal. Sa and then, the data representing the measured value of the alternative sensor, a pulse train rotating support device with sensors, characterized in that the feeding in a state of being superimposed on the data representing the speed of the rotation speed sensor. 回転速度センサの速度を表すパルス列のデータに、この回転速度センサとは別のセンサの測定値を表すデータを、上記パルス列のデューティ比として重畳させた、請求項１に記載したセンサ付回転支持装置。   The rotation support device with a sensor according to claim 1, wherein data representing a measurement value of a sensor different from the rotation speed sensor is superimposed as a duty ratio of the pulse train on pulse train data representing the speed of the rotation speed sensor. . 別のセンサが検出する測定値が回転支持部の振動の大きさである、請求項１〜２の何れかに記載したセンサ付回転支持装置。   The rotation support device with a sensor according to claim 1, wherein the measurement value detected by another sensor is the magnitude of vibration of the rotation support unit. 別のセンサが検出する測定値が回転支持部の温度である、請求項１〜２の何れかに記載したセンサ付回転支持装置。
The rotation support device with a sensor according to claim 1, wherein the measurement value detected by another sensor is the temperature of the rotation support unit.
JP2004279161A 2004-09-27 2004-09-27 Rotation supporting device with sensor Withdrawn JP2006092412A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006207658A (en) * 2005-01-26 2006-08-10 Ntn Corp Method of detecting malfunction of bearing with rotation sensor and its device
JP2009202855A (en) * 2008-01-29 2009-09-10 Nsk Ltd Bearing device for railroad vehicle
JP2010085241A (en) * 2008-09-30 2010-04-15 Aisin Seiki Co Ltd Wheel state detection device
CN103600753A (en) * 2013-11-22 2014-02-26 哈尔滨轴承集团公司 Urban rail transit bearing intelligent sensor
CN103978992A (en) * 2014-06-13 2014-08-13 深圳市远望谷信息技术股份有限公司 Mounting bolt capable of obtaining temperature of mounted equipment, and train axle thereof
CN105003537A (en) * 2015-07-14 2015-10-28 广东省自动化研究所 Air-suspending vibration signal inhibition-based method and system
US10883543B2 (en) 2016-12-14 2021-01-05 Ntn Corporation Rolling bearing with rotation sensor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006207658A (en) * 2005-01-26 2006-08-10 Ntn Corp Method of detecting malfunction of bearing with rotation sensor and its device
JP4518970B2 (en) * 2005-01-26 2010-08-04 Ｎｔｎ株式会社 Abnormality detection method and detection device for bearing with rotation sensor
JP2009202855A (en) * 2008-01-29 2009-09-10 Nsk Ltd Bearing device for railroad vehicle
JP2010085241A (en) * 2008-09-30 2010-04-15 Aisin Seiki Co Ltd Wheel state detection device
CN103600753A (en) * 2013-11-22 2014-02-26 哈尔滨轴承集团公司 Urban rail transit bearing intelligent sensor
CN103978992A (en) * 2014-06-13 2014-08-13 深圳市远望谷信息技术股份有限公司 Mounting bolt capable of obtaining temperature of mounted equipment, and train axle thereof
CN105003537A (en) * 2015-07-14 2015-10-28 广东省自动化研究所 Air-suspending vibration signal inhibition-based method and system
US10883543B2 (en) 2016-12-14 2021-01-05 Ntn Corporation Rolling bearing with rotation sensor

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