阅读说明：本技术 轴承轴向游隙监测装置及方法 (Bearing axial play monitoring device and method ) 是由 吴丽娟 蔡福强 刘鑫 于 2019-09-04 设计创作，主要内容包括：本发明实施例提供一种轴承轴向游隙监测装置及监测方法,轴承轴向游隙监测装置包括：第一传感器,包括传感器第一探头,传感器第一探头固定于轴承所在的轴箱的轴承端面侧壁和轴承的内圈的轴向外端面二者中的一者上,且能够向轴箱的轴承端面侧壁和轴承的内圈的轴向外端面二者中的另一者发射平行于轴承的轴线方向的第一信号并接收第一反射信号,并获取自发射所述第一信号到接收所述第一反射信号的时间间隔,第一反射信号为第一信号的反射信号,轴箱的轴承端面侧壁与轴承的轴线相垂直。本发明实施例所提供的轴承轴向游隙监测装置,算法简单,能够及时发现因安装不当或者运行后期磨损导致的轴向游隙超出安全阈值的问题,提高了轴承运行的安全性。(The embodiment of the present invention provides a kind of bearing axial play monitoring device and monitoring method, bearing axial play monitoring device includes: first sensor, it pops one's head in including sensor first, the probe of sensor first is fixed on one of both bearing face side wall of the axle box where bearing and the axial outer end face of inner ring of bearing, and it can be parallel to the first signal of the axis direction of bearing to the other of both axial outer end face of the inner ring transmitting of the bearing face side wall and bearing of axle box and receive the first reflection signal, and the first signal described in spontaneous emission is obtained to the time interval for receiving the first reflection signal, first reflection signal is the reflection signal of the first signal, the bearing face side wall of axle box and the axis perpendicular of bearing.The problem of bearing axial play monitoring device provided by the embodiment of the present invention, algorithm is simple, and end-play is beyond secure threshold caused by capable of finding in time because of Rig up error or the abrasion of operation later period, improves the safety of bearing operation.)

1. a kind of bearing axial play monitoring device, which is characterized in that suitable for monitoring the end-play of bearing, comprising:

First sensor, including sensor first are popped one's head in, and the probe of sensor first is fixed on the axle box where the bearing Bearing face side wall and the bearing one of both axial outer end face of inner ring on, and can be to the axis of the axle box The other of both axial outer end faces of the inner ring of socket end surface side wall and the bearing emit the axis for being parallel to the bearing First signal in direction simultaneously receives the first reflection signal, and obtains the first signal described in spontaneous emission and believe to first reflection is received Number time interval, it is described first reflection signal be first signal reflection signal, the bearing face side wall of the axle box With the axis perpendicular of the bearing.

2. bearing axial play monitoring device as described in claim 1, which is characterized in that the probe of sensor first passes through Be fixed on bearing front cover and be fixed on the inner ring, and can the first signal described in the bearing face side wall light emission to the axle box simultaneously The first reflection signal is received, and obtains the first signal described in spontaneous emission between the time for receiving the first reflection signal Every, or

The sensor first, which is popped one's head in, is fixed on the bearing face side wall of the axle box, and can be by sending out to the bearing front cover It penetrates first signal and receives the first reflection signal, and it is anti-to receiving described first to obtain the first signal described in spontaneous emission The time interval for penetrating signal realizes and emits first signal to the inner ring of the bearing and receive the first reflection signal, And the first signal described in spontaneous emission is obtained to the time interval for receiving the first reflection signal, wherein the bearing front cover is solid Due to the rotation axis of inner ring suit, and backstop is in the axial end portion of the inner ring, the axial outer end face of the bearing front cover With the axis perpendicular of the bearing.

3. bearing axial play monitoring device as claimed in claim 2, which is characterized in that the probe of sensor first is fixed In the bearing face side wall of the axle box；

The first sensor further includes that sensor second is popped one's head in, and the sensor second, which is popped one's head in, is fixed on the bearing of the axle box End face side wall, and can the axial outer end surface launching to the outer ring of the bearing be parallel to the bearing axis direction second Signal simultaneously receives the second reflection signal, and obtains second signal described in spontaneous emission between the time for receiving the second reflection signal Every the second reflection signal is the reflection signal of the second signal.

4. bearing axial play monitoring device as claimed in claim 3, which is characterized in that the probe of sensor second passes through Emit the second signal to the sealing ring of the bearing and receive the second reflection signal, and obtains second described in spontaneous emission Signal is realized to the time interval for receiving the second reflection signal and emits the second signal to the outer ring of the bearing and connect The second reflection signal is received, and obtains the time interval that second signal described in spontaneous emission reflects signal to reception described second, Wherein, the outer ring of the sealing ring and the bearing is interference fitted, the axial outer end face of the sealing ring and the axis of the bearing Line is perpendicular.

5. bearing axial play monitoring device as described in claim 1, which is characterized in that further include:

Second sensor is fixed on both the bearing face side wall of the axle box or the axial outer end face of outer ring of the bearing One of on, and can be to the bearing face side wall of the axle box or both with the axial outer end face of the outer ring of the bearing The other of transmitting be parallel to the bearing axis direction second signal and receive the second reflection signal, and obtain spontaneous The second signal is penetrated to the time interval for receiving the second reflection signal, the second reflection signal is the second signal Reflection signal.

6. bearing axial play monitoring device as claimed in claim 5, which is characterized in that the second sensor is fixed on institute It states on one of both bearing face side wall of axle box or the axial outer end face of sealing ring of bearing, and can be to the axis The transmitting of the other of both axial outer end faces of the bearing face side wall of case or the sealing ring is parallel to the bearing The second signal of axis direction simultaneously receives the second reflection signal, and it is anti-to receiving described second to obtain second signal described in spontaneous emission The time interval of signal is penetrated, the second reflection signal is the reflection signal of the second signal, wherein the sealing ring and institute State the outer ring interference fit of bearing, the axial outer end face of the sealing ring and the axis perpendicular of the bearing.

7. bearing axial play monitoring device as claimed in any one of claims 1 to 6, which is characterized in that further include:

Arithmetic unit is integrated on the first sensor, is suitable for according to anti-to receiving described first Zi first signal is sent The time interval of signal is penetrated, the end-play of outer ring and inner ring is obtained.

8. bearing axial play monitoring device as claimed in any one of claims 1 to 6, which is characterized in that first signal is Optical signal or electromagnetic signal or acoustic signals.

9. a kind of bearing axial play monitoring method, which is characterized in that using such as the described in any item bearing axis of claim 1-8 To clearance monitoring device, comprising:

Interval executes following steps to schedule:

It obtains to the first signal of axial outer end surface launching of the bearing face side wall of the axle box or the inner ring, arrives and receive To the time interval of the first reflection signal；

Obtained according to the time interval between the bearing face side wall of the axle box and the axial outer end face of the inner ring away from From；

According to the distance between the axial outer end face of the bearing face side wall of the axle box and the inner ring obtain the outer ring and The end-play of inner ring.

Technical field

The present embodiments relate to bearing operational monitoring technical field more particularly to a kind of bearing axial play monitoring devices And method.

Background technique

During bearing working, the contact stress of mechanical periodicity is generated on bearing roller and inside and outside circle roller surface.When answering After power cycle-index reaches certain numerical value, Fatigue peelback is just generated on rolling element or inside and outside circle raceway working face.Therefore, it arranges Bearing monitor system would generally be provided on vehicle wheel set bearing, for monitoring bearing fatigue state.

Because wheel needs swing during train driving, axis and inner ring are also being swung always, the inner ring of wheel set bearing It is provided with certain end-play, between outer ring to prevent bearing stuck.If wheel set bearing assembles in incorrect or bearing Circle may cause interior since failure causes to loosen or bearing generates abrasion for clamping element (for example, front cover, bolt and rear gear) It encloses and becomes larger the clearance between outer ring, however, current bearing monitor system is unable to monitor the variation of bearing clearance, and bearing Clearance is excessive, and the impact that bearing is subject to is larger, in some instances it may even be possible to cause inner ring to deviate from bearing damage, even result in overturning derailing thing Therefore occur.

Therefore, a kind of bearing axial play monitoring device how is designed, the end-play variation of real-time monitoring bearing becomes The technical issues of urgent need to resolve.

Summary of the invention

The technical issues of embodiment of the present invention solves is to design a kind of bearing axial play monitoring device, real-time monitoring bearing Changed play.

To solve the above problems, the embodiment of the present invention provides a kind of bearing axial play monitoring device, it is suitable for monitoring bearing Changed play, comprising:

First sensor, including sensor first are popped one's head in, and the probe of sensor first is fixed on where the bearing On one of both axial outer end faces of inner ring of the bearing face side wall of axle box and the bearing, and can be to the axle box The other of both axial outer end face of the inner ring transmitting of bearing face side wall and the bearing be parallel to the bearing First signal of axis direction simultaneously receives the first reflection signal, and it is anti-to receiving described first to obtain the first signal described in spontaneous emission The time interval of signal is penetrated, the first reflection signal is the reflection signal of first signal, the bearing face of the axle box The axis perpendicular of side wall and the bearing.

Optionally, the probe of sensor first is fixed on the inner ring by being fixed on bearing front cover, and can be to institute It states the first signal described in the bearing face side wall light emission of axle box and receives the first reflection signal, and obtain described in spontaneous emission the One signal reflects the time interval of signal to reception described first, or

The sensor first, which is popped one's head in, is fixed on the bearing face side wall of the axle box, and can be by before the bearing Lid emits first signal and simultaneously receives the first reflection signal, and obtains the first signal described in spontaneous emission to reception described the The time interval of one reflection signal is realized and emits first signal to the inner ring of the bearing and receive the first reflection letter Number, and the first signal described in spontaneous emission is obtained to the time interval for receiving the first reflection signal, wherein the bearing front cover It is fixed on the rotation axis of the inner ring suit, and backstop is in the axial end portion of the inner ring, the axial outer end of the bearing front cover The axis perpendicular in face and the bearing.

Optionally, the sensor first, which is popped one's head in, is fixed on the bearing face side wall of the axle box；

The first sensor further includes that sensor second is popped one's head in, and the probe of sensor second is fixed on the axle box Bearing face side wall, and can axial outer end surface launching to the outer ring of the bearing be parallel to the axis direction of the bearing Second signal simultaneously receive second reflection signal, and obtain second signal described in spontaneous emission to receive it is described second reflect signal when Between be spaced, it is described second reflection signal be the second signal reflection signal.

Optionally, the probe of sensor second is by emitting the second signal to the sealing ring of the bearing and receiving The second reflection signal, and obtain second signal described in spontaneous emission to the time interval for receiving the second reflection signal, in fact Now emit the second signal to the outer ring of the bearing and receive the second reflection signal, and obtains second described in spontaneous emission Time interval of the signal to reception the second reflection signal, wherein the outer ring of the sealing ring and the bearing is interference fitted, The axial outer end face of the sealing ring and the axis perpendicular of the bearing.

Optionally, the bearing axial play monitoring device, further includes:

Second sensor is fixed on the axial outer end face of the bearing face side wall of the axle box or the outer ring of the bearing In one of the two, and can to the axle box bearing face side wall or with the axial outer end face of the outer ring of the bearing The transmitting of the other of the two is parallel to the second signal of the axis direction of the bearing and receives the second reflection signal, and obtains For second signal described in spontaneous emission to the time interval for receiving the second reflection signal, the second reflection signal is described second The reflection signal of signal.

Optionally, the second sensor is fixed on the axis of the bearing face side wall of the axle box or the sealing ring of bearing On one of both outside end faces, and can be to the bearing face side wall of the axle box or the axial outer end of the sealing ring The transmitting of the other of both faces is parallel to the second signal of the axis direction of the bearing and receives the second reflection signal, and obtains It is derived from and emits the second signal to the time interval for receiving the second reflection signal, the second reflection signal is described the The reflection signal of binary signal, wherein the outer ring of the sealing ring and the bearing is interference fitted, the axial outer end of the sealing ring The axis perpendicular in face and the bearing.

Optionally, the bearing axial play monitoring device, further includes:

Arithmetic unit is integrated on the first sensor, is suitable for according to from first signal is sent to reception described the The time interval of one reflection signal, obtains the end-play of outer ring and inner ring.

Optionally, first signal is optical signal or electromagnetic signal or acoustic signals.

To solve the above problems, the embodiment of the present invention also provides a kind of bearing axial play monitoring method, using above-mentioned Bearing axial play monitoring device, comprising:

Interval executes following steps to schedule:

It obtains to the first signal of axial outer end surface launching of the bearing face side wall of the axle box or the inner ring, arrives Receive the time interval of the first reflection signal；

It is obtained according to the time interval between the bearing face side wall of the axle box and the axial outer end face of the inner ring Distance；

It is obtained according to the distance between the axial outer end face of the bearing face side wall of the axle box and the inner ring described outer The end-play of circle and inner ring.

Compared with prior art, the technical solution of the embodiment of the present invention has the advantage that

Bearing axial play monitoring device provided by the embodiment of the present invention, suitable for monitoring the end-play of bearing, comprising: First sensor, including sensor first are popped one's head in, and the probe of sensor first is fixed on the axis of the axle box where the bearing On one of both axial outer end faces of the inner ring of socket end surface side wall and the bearing, and can be to the bearing end of the axle box The other of both axial outer end faces of the inner ring of surface side wall and the bearing emit the axis direction for being parallel to the bearing The first signal and receive the first reflection signal, and obtain the first signal described in spontaneous emission and reflect signal to receiving described first Time interval, the first reflection signal are the reflection signal of first signal, the bearing face side wall of the axle box and institute State the axis perpendicular of bearing.Bearing axial play monitoring device provided by the embodiment of the present invention, when bearing outer ring and axle box After fixed installation, the probe of sensor first is installed on axle box or bearing inner race, the probe of sensor first can be to described The transmitting of the other of both axial outer end faces of inner ring of the bearing face side wall of axle box and the bearing is parallel to the axis First signal of the axis direction held simultaneously receives the first reflection signal, it is thus possible to obtain the axis according to the time interval The bearing face side wall of case and the distance between the axial outer end face of the inner ring, and since axle box is fixed in outer ring, pass through prison The distance between bearing face side wall and the axial outer end face of inner ring of axle box are surveyed, and then realizes the prison for bearing axial play It surveys.Bearing axial play monitoring device provided by the embodiment of the present invention utilizes the axis for the axle box being fixed on where the bearing Sensor first on one of both axial outer end faces of the inner ring of socket end surface side wall and the bearing is popped one's head in, realize for The monitoring of bearing axial play, it is axial caused by capable of finding in time because of Rig up error, loose-parts or the abrasion of operation later period Clearance exceeds the problem of secure threshold, improves the safety of bearing operation, meanwhile, utilize the first signal of transmission and reception first Monitoring of the time interval realization of signal to bearing axial play is reflected, algorithm is simple, and cost is relatively low.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.

Fig. 1 is a kind of structural schematic diagram of axle box device provided by the embodiment of the present invention；

Fig. 2 is the structural schematic diagram of another kind axle box device provided by the embodiment of the present invention.

Fig. 3 is a kind of flow diagram of bearing axial play monitoring method provided by the embodiment of the present invention.

Wherein: 10- first sensor；The first signal of 100-；101- first reflects signal；110- sensor first is popped one's head in； 120- sensor second is popped one's head in；The bearing face side wall of 20- axle box；200- second signal；202- second reflects signal；In 30- Circle；40- bearing front cover；The outer ring 50-；60- sealing ring；

Specific embodiment

It can be seen from background technology that current bearing monitor system is unable to monitor the variation of bearing axial play, causes to pacify Full hidden danger.

Change in order to the end-play of real-time monitoring bearing, the embodiment of the invention provides a kind of bearing axial plays The probe of sensor first is installed on axle box or bearing inner race by monitoring device after bearing outer ring and axle box fixed installation, The probe of sensor first can be into axial outer end face the two of the inner ring of the bearing face side wall and bearing of the axle box Another one transmitting be parallel to the bearing axis direction the first signal and receive first reflection signal, it is thus possible to root The distance between the bearing face side wall of the axle box and the axial outer end face of the inner ring are obtained according to the time interval, and by It is fixed on axle box in outer ring, by the distance between bearing face side wall and the axial outer end face of inner ring for monitoring axle box, in turn Realize the monitoring for bearing axial play.Bearing axial play monitoring device provided by the embodiment of the present invention, utilizes fixation In on the bearing face side wall of the axle box where the bearing and one of both the axial outer end face of inner ring of the bearing Sensor first pop one's head in, realize monitoring for bearing axial play, can find in time because of Rig up error, loose-parts or Person runs the problem of end-play caused by later period abrasion exceeds secure threshold, improves the safety of bearing operation, meanwhile, benefit With sending the first signal and receiving monitoring of the time interval realization of the first reflection signal to bearing axial play, algorithm is simple, And cost is relatively low.

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It should be noted that the orientation or positional relationship of instruction involved by this specification is side based on the figure Position or positional relationship are merely for convenience of description and simplification description, rather than the device of indication or suggestion meaning must have spy Fixed orientation with specific orientation construction, therefore is not considered as limiting the invention.

Bearing axial play monitoring device provided by the embodiment of the present invention, suitable for monitoring the changed play of bearing, comprising:

First sensor, including sensor first are popped one's head in, and the probe of sensor first is fixed on where the bearing On one of both axial outer end faces of inner ring of the bearing face side wall of axle box and the bearing, and can be to the axle box The other of both axial outer end face of the inner ring transmitting of bearing face side wall and the bearing be parallel to the bearing First signal of axis direction simultaneously receives the first reflection signal, and it is anti-to receiving described first to obtain the first signal described in spontaneous emission The time interval of signal is penetrated, the first reflection signal is the reflection signal of first signal, the bearing face of the axle box The axis perpendicular of side wall and the bearing.

It should be noted that the bearing face side wall of axle box as described herein, refer to axle box with where bearing face The parallel axle box side wall in face.Bearing face refers to the axial end face of bearing, because bearing face is vertical close with the axis of bearing System, the bearing face side wall of the axle box and the axis perpendicular of the bearing, also show the bearing end surface side of the axle box Wall and bearing face are parallel.The axial outer end face of bearing inner race can be the axial end portion of bearing inner race, when bearing inner race When axial end portion includes opposing stationary axial stop part, the axial outer end face of axial stop part can be considered as the axis of bearing inner race Outside end face.Bearing axial play monitoring device can be to the axis of the inner ring of the bearing face side wall and bearing of the axle box The transmitting of the other of both outside end faces is parallel to the first signal of the axis direction of the bearing and receives the first reflection letter Number, refer to that bearing axial play monitoring device has the function, when bearing axial play monitoring device is installed to axle box After on the inner ring of bearing face side wall or bearing, and when under bearing is in running order, bearing axial play monitoring device It is parallel to the other of both axial outer end face of the inner ring transmitting of the bearing face side wall and the bearing of the axle box First signal of the axis direction of the bearing simultaneously receives the first reflection signal.

During bearing working, the inner ring 30 of bearing is matched with axis, and the outer ring 50 of bearing is fixed on bearing housing, axis The outer ring 50 and axle box held are opposing stationary, then the end-play between inner ring 30 and outer ring 50 can be by monitoring 30 He of inner ring The distance between bearing face side wall 20 of axle box is realized.

It is easily understood that since the transmission speed of the first signal of the probe transmitting of sensor first can be far longer than bearing Running speed therefore emit in the first signal to certain point in the axial outer end face of bearing inner race, and the first reflection signal returns In the period popped one's head in sensor first, it is believed that bearing does not rotate also.

In one embodiment, the first signal of the probe of sensor first transmitting is optical signal, in other embodiments, the One signal may be electromagnetic signal, the signal of acoustic signals or other forms, as long as the speed order of magnitude of the first signal is remote Greater than the running speed of bearing.

Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of axle box device provided by the embodiment of the present invention.

As shown in Figure 1, for the installation convenient for sensor, first sensor 10 to be mounted on to the axis of axle box in the present embodiment On the wall of socket end surface side, the probe of sensor first 110 is integrated on first sensor 10, and the probe 110 of sensor first is into bearing The axial outer end surface launching of circle 30 is parallel to the first signal 100 of the axis direction of the bearing, and the first signal 100 is through in bearing The axial outer end face reflection of circle 30 forms the first reflection signal 101, and the first reflection signal 101 is by backtracking and by sensor First probe 110 receives.

Similarly, in other embodiments, it is also possible to for first sensor to be mounted on the axial outer end face of bearing inner race 30 On.So, during bearing operation, sensor first, which is popped one's head in, is parallel to the axis of bearing to the bearing face side wall light emission of axle box First signal in line direction, the first signal reach the bearing face side wall reflection of axle box, form the first reflection signal, the first reflection Signal is received by backtracking and by the probe of sensor first.

In the present embodiment, it is a cycle that signal 101 is reflected from the first signal 100 of transmitting to reception first, due to sensing The probe of device first 110 can be spaced to schedule to be emitted the first signal 100 repeatedly and receives the first reflection signal 101, and The time interval for reflecting signal 101 to reception described first Zi transmission first signal 100 that different cycles can be obtained, into And it is obtained according to the time interval between the bearing face side wall 20 of the axle box and the axial outer end face of the inner ring 30 Distance, and since axle box is fixed in outer ring 50, by monitoring the bearing face side wall 20 of axle box and the axial outer end face of inner ring 30 The distance between, so that it may realize the monitoring of the end-play between outer ring 50 and inner ring 30.

It is possible to further which bearing axial play monitoring device is accessed FTP client FTP, so that client can voluntarily set Secure threshold is set, after bearing monitoring device is accessed operating system, by the bearing face side wall and the institute that judge a certain period Whether the distance between the axial outer end face for stating inner ring has exceeded secure threshold, so as to find bearing inner race and bearing in time Whether the end-play between outer ring has exceeded safe range, and bearing axial play monitoring device once monitors bearing axial play Gap has exceeded secure threshold, can alarm, to improve the safety of bearing operation, avoids the generation of safety accident.

As it can be seen that bearing axial play monitoring device provided by the embodiment of the present invention, using being fixed on where the bearing The bearing face side wall of axle box and one of both the axial outer end face of inner ring of the bearing on sensor first visit Head realizes the monitoring for bearing axial play, axis caused by capable of finding in time because of Rig up error or the abrasion of operation later period The problem of exceeding secure threshold to clearance the safety of bearing operation is improved, meanwhile, using sending the first signal and receive the The time interval of one reflection signal realizes the monitoring to bearing axial play, and algorithm is simple, and cost is relatively low.

It continues to refer to figure 1, in a specific embodiment, the bearing front cover 40 is fixed on turn that the inner ring 30 is set with Moving axis, and backstop is in the axial end portion of the inner ring 30, the axial outer end face of the bearing front cover 40 and the axis of the bearing It is perpendicular.

The probe of sensor first 110 is fixed on the inner ring 30 by being fixed on bearing front cover 40, and can be to institute The bearing face side wall 20 for stating axle box emits first signal 100 and receives the first reflection signal 101, and obtains spontaneous Send first signal 100 to the time interval for receiving the first reflection signal 101.

Since bearing front cover 40 is set in rotation axis and backstop is in the axial end portion of inner ring 30, then bearing front cover 40 and axis Hold that inner ring 30 is opposing stationary, then by the bearing face side wall 20 of monitoring axle box and bearing front cover 40 different cycles away from From the monitoring of the end-play between the inner ring 30 and outer ring 50 to bearing may be implemented.

It is easily understood that bearing monitoring device is during the work time, the axial direction of bearing front cover 40 can be transmitted signals to On outer end face using first probe to axis distance in order to reduce monitoring error, to be installed by sensor on the circle of radius When on to the bearing face side wall 20 of axle box, the table that sensor is mounted on and can transmit signals to bearing front cover 40 can choose Region on the opposed flattened circle in face.Certainly, in other embodiments, hollow is not present in the axial outer end face of bearing front cover 40 In the case where injustice, the installation site of sensor without limitation, as long as can guarantee sensor first probe 110 transmitting signals The axial outer end face of bearing front cover 40 can be reached.

In another embodiment, the sensor first, which is popped one's head in, can also be fixed on the bearing face side wall of the axle box, And it can be realized by emitting first signal to the bearing front cover and receiving the first reflection signal to the bearing Inner ring emit first signal and receive the first reflection signal, and be obtained from and send first signal to reception institute State the time interval of the first reflection signal.

Referring to FIG. 2, according to operating condition needs, when the outer ring of bearing 50 is not secured on axle box, during bearing working The inner ring 30 of bearing and outer ring 50 be it is unfixed, in order to accurately measure different cycles bearing inner ring 30 and outer ring 50 it Between end-play, in a specific embodiment, the sensor first probe 110 is fixed on the bearing face of the axle box Side wall 20；

The first sensor 10 further includes the probe of sensor second 120, and the probe of sensor second 120 is fixed on institute State the bearing face side wall 20 of axle box, and can the axial outer end surface launching to the outer ring of the bearing 50 be parallel to the bearing Axis direction second signal 200 and receive the second reflection signal 202, and be obtained from and send the second signal 200 to connecing The time interval of the second reflection signal 202 is received, the second reflection signal 202 is that the reflection of the second signal 200 is believed Number.

The probe of sensor second 120 is parallel to the axis direction of the bearing to the axial outer end surface launching of bearing outer ring 50 Second signal 200, second signal 200 reflects through the axial outer end face of bearing inner race 30, form the second reflection signal 202, the Two reflection signals 202 are received by backtracking and by the probe of sensor second 120.

In the present embodiment, it is a cycle that signal 202 is reflected from transmitting second signal 200 to reception second, due to sensing The probe of device second 120 can be spaced to schedule to be emitted second signal 200 repeatedly and receives the second reflection signal 202, and The time interval for reflecting signal 202 to reception described second Zi the transmission second signal 200 that different cycles can be obtained, into And it is obtained according to the time interval between the bearing face side wall 20 of the axle box and the axial outer end face of the outer ring 50 Distance, and then obtain the relative position between the bearing face side wall 20 of the axle box and the axial outer end face of the outer ring 50 and become Change value.Relative position variation between the outer ring 50 of bearing and the bearing face side wall 20 of axle box is the outer ring under different cycles 50 change in location in the axial direction is denoted as S₁.Meanwhile it can be monitored under different cycles by the probe of sensor first 110 Change in location in the axial direction of inner ring 30, is denoted as S₂, by comparing the S under same period₁And S₂Difference, difference can be obtained The inner ring 30 of bearing under period and the end-play of outer ring 50.

Specifically, bearing axial play monitoring device may include arithmetic unit, in one embodiment, arithmetic unit can collect On first sensor 10 described in Cheng Yu, it is suitable for reflecting signal 101 to receiving described first according to Zi transmission first signal 100 Time interval, obtain outer ring and inner ring end-play.Bearing axial play monitoring device provided by the embodiment of the present invention It only needs to carry out simply plus and minus calculation, algorithm is simple, by the way that arithmetic unit to be integrated on first sensor 10, but also bearing axis Structure to clearance monitoring device is more integrated, easier for installation.

Certainly, sealing ring 60 is also provided on bearing to improve sealing performance, with continued reference to Fig. 2, in a kind of specific reality Apply in example, the sealing ring 60 and the outer ring 50 of the bearing are interference fitted, the axial outer end face of the sealing ring 60 with it is described The axis perpendicular of bearing；

The probe 120 of sensor second is by emitting the second signal 200 to the sealing ring 60 of the bearing and connecing The second reflection signal 202 is received, and obtains reflecting Zi the transmission second signal 200 to receiving described second for different cycles The time interval of signal 202 is realized and emits the second signal 200 to the outer ring of the bearing 50 and receive second reflection Signal 202, and obtain under different cycles from send the second signal 200 to reception described second reflect signal 202 when Between be spaced.

In the present embodiment, it is a cycle that signal 202 is reflected from transmitting second signal 200 to reception second, due to sealing Circle 60 and the outer ring 50 of bearing are interference fitted, and sealing ring 60 and bearing outer ring 50 are opposing stationary, then passing through the axis of measurement axle box Socket end surface side wall 20 can reflect the bearing face side wall of the axle box under different cycles at a distance under 60 different cycles of sealing ring The distance between 20 and outer ring 50.

Sensor includes the probe of sensor first 110 and the probe of sensor second 120, thus more convenient by bearing axial play Gap monitoring device is installed on the bearing face side wall 20 of axle box.Certainly, in other embodiments, bearing axial play monitoring dress Setting may include second sensor, and second sensor plays the role of the probe of sensor second.Specifically, for the ease of installation, Second sensor can be fixed on the bearing face side wall of the axle box, axis of the second sensor to the outer ring of the bearing Surface launching outward is parallel to the second signal of the axis direction of the bearing and receives the second reflection signal, and can obtain not The synperiodic time interval for reflecting signal 202 to reception described second Zi the transmission second signal 200, second reflection Signal is the reflection signal of the second signal.Certainly, in the case where the axial end portion of the outer ring of bearing is provided with sealing ring, Second sensor can the axial outer end surface launching to sealing ring be parallel to the bearing axis direction second signal and connect Receive the second reflection signal.

In another embodiment, second sensor can also be fixed on the axial outer end face of outer ring of the bearing, Second sensor to the bearing face side wall light emission of the axle box be parallel to the bearing axis direction second signal and connect Receive the second reflection signal.Certainly, in the case where the axial end portion of the outer ring of bearing is provided with sealing ring, second sensor can be with It is fixed on the axial outer end face of the sealing ring of bearing, and is parallel to the bearing to the bearing face side wall light emission of the axle box Axis direction second signal and receive the second reflection signal, and obtain different cycles from the transmission second signal to connecing The time interval of the second reflection signal is received, the second reflection signal is the reflection signal of the second signal.

Referring to FIG. 3, Fig. 3 is that solve the above-mentioned problems, the embodiment of the present invention also provides a kind of bearing axial play prison Survey method, using above-mentioned bearing axial play monitoring device, comprising:

Interval executes following steps to schedule:

Constantly lead to it should be noted that being spaced refer to that bearing axial play monitoring device can be to schedule Sensor emission signal is crossed to the inner ring of bearing and receives the first reflection signal, is also possible to pass through biography within the scope of certain time Sensor emits signal to the inner ring of bearing and receives the first reflection signal.

Step S1 is obtained from the axial outer end surface launching first to the bearing face side wall of the axle box or the inner ring Signal, and receive the time interval of the first reflection signal.

Specifically, Fig. 3, when first sensor is installed on the bearing face side wall of axle box, sensor are referred in conjunction with Fig. 1 Inner ring 30 from first probe 110 to bearing the first signal of axial outer end surface launching 100, first signal 100 reaches inner ring 30 Axial outer end reflects behind face, forms the first reflection signal 101, and the first reflection signal 101 along backtracking and passes through sensing The probe of device first 110 receives, and is obtained from and sends first signal 100 to the time for receiving the first reflection signal 101 Interval, obtains the first signal of axial outer end surface launching 100 of the bearing face side wall 20 or the inner ring 30 to the axle box, And the time interval of the first reflection signal 101 is received,

Similarly, in another embodiment, when first sensor is installed on the axial outer end face of inner ring, sensor first The first signal of bearing face side wall light emission popped one's head in axle box, the first signal reach occur after the bearing face side wall of axle box it is anti- It penetrates, forms the first reflection signal, the first reflection signal is received along backtracking and by the probe of sensor first, and is obtained spontaneous Send first signal to the time interval for receiving the first reflection signal.

Since first sensor can be obtained from the first signal 100 of transmitting to the time interval for receiving the first signal 100, Have the data basis of the distance between the axial side wall of the calculating axle box and the axial outer end face of the inner ring 30, Realize the basis being monitored to the end-play of bearing, thus it is subsequent can bearing face side wall 20 to the axle box It is calculated with the distance in the axial outer end face of the inner ring 30, realizes the monitoring to the end-play of inner ring 30 and outer ring 50.

Step S2 obtains the bearing face side wall 20 of the axle box and the axial direction of the inner ring 30 according to the time interval The distance between outer end face.

Specifically, arithmetic unit can be according to different weeks after sensor obtains the first signal 100 and the first reflection signal 101 The bearing face side wall 20 of the data acquisition axle box of the first signal 100 and the first reflection signal 101 of phase and the inner ring 30 of bearing The distance between axial outer end face.

Step S3, according between the bearing face side wall 20 of the axle box and the axial outer end face of the inner ring 30 away from From obtaining the end-play of outer ring 50 and inner ring 30.

It is a cycle to emit the first signal 100 to the first reflection signal 101 is received, obtains the bearing end surface side of axle box The distance between wall 20 and the axial outer end face of inner ring 30 of bearing obtain 20 He of bearing face side wall of different cycles inside axle box The distance between axial outer end face of inner ring 30 of bearing, and since axle box is fixed in outer ring 50, by the bearing for monitoring axle box The distance between the axial outer end face of end face side wall 20 and inner ring 30, so that it may realize the axial play between outer ring 50 and inner ring 30 The monitoring of gap.

After bearing axial play monitoring device is accessed FTP client FTP, client can be with the safety threshold of self-setting bearing Value, after bearing monitoring device is accessed operating system, bearing axial play monitoring device once monitors bearing axial play Secure threshold is had exceeded, can be alarmed, to improve the safety of bearing operation, avoids the generation of safety accident.

As it can be seen that bearing axial play monitoring device provided by the embodiment of the present invention, using being fixed on where the bearing The bearing face side wall 20 of axle box and one of both the axial outer end face of inner ring 30 of the bearing on sensor One probe, realizes the monitoring for bearing axial play, can find in time because of Rig up error, loose-parts or operation later period End-play caused by wearing exceeds the problem of secure threshold, improves the safety of bearing operation, meanwhile, utilize transmission first Signal 100 and the time interval for receiving the first reflection signal 101 realize the monitoring to bearing axial play, and algorithm is simple, and at This is lower.

Although the embodiment of the present invention discloses as above, present invention is not limited to this.Anyone skilled in the art, not It is detached from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should be with right It is required that subject to limited range.