JP2005030588A - Abnormality checking system for bearing with ic tag sensor in conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and inexpensive abnormality checking system capable of easily checking the occurrence of abnormality in a number of bearings in a bearing operating state, and preventing the occurrence of abnormality of the bearings. <P>SOLUTION: This system is the abnormality checking system of a rolling bearing 1 assembled in a machine plant 10. The bearing 1 is the bearing 1A with the IC tag sensor, and a tag reading/writing terminal 2 is mounted to read the stored information with respect to the IC tag 3 and to feed the power to a power source circuit 5 in a non-contact state. The bearing 1A with the IC tag sensor is obtained by mounting the IC tag 3, a temperature sensor 4 and the power source circuit 5 on the bearing 1. The power source circuit 5 is incorporated in the IC tag 3, or mounted independently from the IC tag 3, and receiving the electric power from the external of the bearing to drive the sensor 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention, a rolling bearing incorporated in various conveyor lines relates anomaly inspection system for detecting an abnormality of the bearing as with IC tag and sensor, for example, etc. of thermal power plants belt conveyors, It is applied to bearings and the like that are used in large numbers and require life management.

In various conveyor lines , a large number of rolling bearings are used, and management of the bearing life is necessary, but management is often difficult.
For example, in a thermal power plant, coal used for fuel is carried by a coal carrier and landed on a belt conveyor by a coal lift. Furthermore, it is sent to a coal storage by a belt conveyor, piled up in a mountain shape and stored, and when consumed, it is sent from the coal pile of the storage coal to the boiler by a belt conveyor. The boiler cannot be stopped from the viewpoint of power supply and fuel efficiency, and it is necessary to always operate the belt conveyor. For the belt conveyor, a bearing unit having a structure in which a bearing is provided in a cylindrical roller is used. For example, several hundred bearing units are used.
In such a belt conveyor, the main bearing section such as a drive section stops the apparatus when an abnormality occurs due to damage or the like, so it is necessary to always monitor it. For this purpose, a temperature sensor or a vibration sensor is attached to the bearing to constantly monitor whether there is a change in temperature or vibration. On the other hand, since there are a large number of rollers that support the belt in the middle of the belt conveyor, it is not possible to manage all of the bearings in the same way as the bearing unit of the drive unit. Monitoring is not realistic. Therefore, from the record when the bearing unit was replaced last time, the bearing unit is replaced early to ensure safety with respect to the rated bearing life. Replacement of the bearings in this case, the replacement of each roller is a bearing unit, subjected to appropriate treatment, it is to perform replacement without stopping the belt conveyor.

In the conventional belt conveyor of a thermal power plant, even if the intermediate roller supports the belt, if an abnormality occurs in the bearing, it may be necessary to stop the conveyor depending on the damage situation. In periodic bearing replacement, appropriate measures are taken to enable replacement without stopping the conveyor. However, in the case of an unexpected bearing abnormality, replacement may not be possible with the conveyor operating. Even if the bearing is replaced early with respect to the rated life, an unexpected abnormality may occur, and such an abnormality cannot be known in advance.
In addition, for rolling stock wheel support bearings, periodic inspections are performed at the time of stopping as described above. However, for vehicles that run long hours at high speeds, bearing usage conditions are severe. It becomes. For this reason, the occurrence of abnormal bearings may not be sufficiently prevented only by periodic inspection at the time of stopping. Moreover, the bearing state during traveling cannot be accurately known when the vehicle is stopped.

An object of the present invention is to provide an IC tag sensor in a simple and inexpensive conveyor that can easily inspect the occurrence of abnormality in a large number of bearings in a bearing operating state and can prevent the occurrence of bearing abnormality. It is to provide an abnormality inspection system for a bearing with a bearing.

Sensor The anomaly inspection system I C tag with a sensor bearing in conveyor invention, for detecting the rolling bearing incorporated into machinery equipment consisting of a conveyor line, such as a belt conveyor or roller conveyor, and the IC tag, the detection target And an IC tag / sensor-equipped bearing having a built-in IC tag or a separate body from the IC tag and a non-contact power supply circuit that drives the sensor by being fed from outside the bearing, And a tag receiver for contactlessly supplying power to the power supply circuit.
According to this configuration, close to the bearing periodically or moved to an arbitrary time receiver for the tag, then supplies power to the power supply circuit of the bearings, to drive the power Dese capacitors, but any time only Ru can be measured to be detected not operate the sensor. Abnormalities of bearings by measurement results Ru can check. Measurement results may be transmitted to the tag receiver, or may be transmitted only upon reaching a certain condition. Such an operation can also be performed for a large number of bearings with IC tags and sensors with one tag receiver.
Therefore, as in the case of the conventional constant inspection, without the power of the transmission apparatus and continuously drive in addition to the sensor to each bearing unit, simply by providing the power supply circuit to convey the IC tag and the supply power to the sensor It is not necessary to provide a receiver corresponding to each bearing unit, so that a small installation space is required and the equipment cost is low. For example, it is only necessary to determine the monitoring time once a day or once every certain time, so that it can be monitored intermittently. Therefore, many bearings can be monitored, and even if there are many bearings to be measured. . Also, as a result of the measurement, since the abnormality can be replaced before they occur, not lead to failure of the mechanical equipment itself need not damaging the machinery itself. In addition, since a bearing with a sign of failure can be replaced at the time of periodic maintenance when the mechanical equipment is stopped, it is easy to carry out necessary inventory of a replacement bearing or a bearing unit.

In the present invention, the IC tag sensor-equipped bearing, may be assumed to have a both or either of the temperature sensors and vibration sensor as the sensor. In this case, the power supply circuit may be capable of driving the sensors .
Life of the bearing is determined by the temperature, is determined by the vibration was or. If vibration information is obtained in addition to temperature information, a bearing abnormality can be determined with higher accuracy.

The IC tag may store identification information of a rolling bearing provided with the IC tag. The identification information is a product number and lot number, and the like. When the bearing identification information is obtained together with the temperature measurement information, the life judgment and management by a management computer or the like is further facilitated. Further, the IC tag may store information on the installation location of the bearing with respect to the mechanical equipment.

The mechanical equipment may be one in which a plurality of bearings with IC tags and sensors are arranged. When a large number of bearings are arranged, the abnormality inspection system using the bearing with the IC tag / sensor according to the present invention is effective.
In this case, terminal moving means may be provided for moving the tag reading / writing terminal along the arrangement of the bearings with the IC tag / sensor so that the reading / writing and feeding can be performed. When such a terminal moving means is provided, it becomes easy to intermittently monitor a large number of bearings by periodically moving the tag reading / writing terminal.

Upper SL IC tag sensor-equipped bearing is applied to the bearing for supporting the roller or conveyor roller for the belts supporting the conveyor line.
In such a conveyor line, since a large number of bearings are used, the effect that the abnormality inspection can be easily performed in the operation state of the bearing in the abnormality inspection system using the bearing with the IC tag / sensor of the present invention is further effective. It becomes.

  In particular, when the mechanical equipment is a belt conveyor that transports coal to the boiler of a thermal power plant, and the bearing with the IC tag / sensor is a bearing that supports the roller by being incorporated in a roller that supports the belt. Since the number of bearings is very large and the conveyor cannot be stopped, the effect of the present invention is effectively exhibited.

Abnormal inspection method of the IC tag with a sensor bearing in the conveyor of the invention, the sensor roller bearing incorporated in machinery equipment consisting of a conveyor line, such as a belt conveyor or roller conveyor, that detect the IC tag, the detection target And a bearing with an IC tag / sensor having a built-in IC tag or separate from the IC tag, and a non-contact power supply circuit that is powered from the outside of the bearing to drive the sensor. periodically or by driving the upper xenon capacitors optionally during power supply to the reading-out and the power supply circuit of the information by using a tag reading and writing device for performing a non-contact, and a method of reading information stored in the IC tag.
According to this method, as described in the abnormality inspection system of the present invention, it is possible to easily check the occurrence of abnormalities in a large number of bearings in the bearing operating state, and to prevent occurrence of abnormalities in the bearings. it can. Moreover, the inspection method is simple and inexpensive.

Abnormal inspection system I C tag with a sensor bearing in the conveyor of the invention, a rolling bearing incorporated in machinery equipment consisting of a conveyor line, such as a belt conveyor or roller conveyor, Se for detecting the IC tag, the detection target Because it is a bearing with an IC tag / sensor having a sensor and a power supply circuit, and a tag read / write terminal that performs non-contact reading and writing of stored information on the IC tag and power feeding to the power supply circuit is provided. Inspection of occurrence of abnormality in a large number of bearings can be easily performed in a bearing operation state, and a simple and inexpensive abnormality inspection system that can prevent occurrence of abnormality in the bearing can be obtained.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, this abnormality inspection system for a bearing with an IC tag / sensor has a rolling bearing 1 incorporated in a machine facility 10 as a bearing 1A with an IC tag / sensor and a tag reading / writing terminal 2. is there. An IC tag / sensor-equipped bearing 1 </ b> A is a rolling bearing 1 provided with an IC tag 3, a temperature sensor 4, and a power supply circuit 5. The power supply circuit 5 is built in the IC tag 3 or separated from the IC tag 3 and is supplied with electric power from the outside of the bearing in a non-contact manner to drive the temperature sensor 4. The IC tag 3, the temperature sensor 4, and the power supply circuit 5 are installed on a common substrate to constitute one bearing-equipped electronic component 6. The bearing-equipped electronic component 6 has a conceptual configuration shown in a block diagram drawn out and enlarged in FIG. The tag read / write terminal 2 reads stored information from the IC tag 3 of the IC tag / sensor-equipped bearing 1A and supplies power to the power supply circuit 5 in a non-contact manner.

The mechanical equipment 10 is equipment having a plurality of rolling bearings 1 arranged, and these bearings 1 are used as the above-mentioned bearings 1A with an IC tag / sensor. Specifically, the machine facility 10 is a conveyor line such as a belt conveyor or a roller conveyor, and FIG. 1 shows an example applied to the belt conveyor line. In this example, the rolling bearing 1 incorporated in the roller 8 that supports the middle portion of the belt 7 in the length direction is the bearing 1A with an IC tag / sensor. The roller 8 and the bearings 1 at both ends thereof constitute a bearing unit 8A. The inner ring of the rolling bearing 1 is installed on a roller spindle fixed to a conveyor frame (not shown in FIG. 1).
The tag reading / writing terminal 2 is movably installed along the arrangement of the IC tag / sensor-equipped bearings 1 </ b> A, and is moved by the terminal moving means 20. The tag reading / writing terminal 2 may be a terminal that can be moved by an operator.

The IC tag 3 includes an IC chip 11 and an antenna 12. The IC chip 11 and the antenna 12 are provided on a common substrate (not shown) and are integrally wrapped with a resin (not shown) or the like. The IC tag 3 has various types, shapes, and sizes. In addition to the plate-shaped object, the IC tag 3 includes, for example, a rectangular shape or a spherical shape having a size of less than 1 mm, and the storage capacity varies. The size, type, etc. may be selected according to the bearing 1 to be attached. As the IC tag 3, for example, an RFID tag using an RFID (Radio Frequency Identification) technology can be used. The RFID-type IC tag 3 has a transmission system that uses electrostatic coupling, electromagnetic coupling, electromagnetic induction, microwave, light, etc., and any of these types may be used. In this example, an electromagnetic induction type is used. Further, there are some IC tags 3 that can be used even if there is a metal around them, and these are preferable because they are attached to the bearing 1.

FIG. 2 is a block diagram showing an example of the configuration of the bearing-equipped electronic component 6 provided with the IC tag 3 and the like and the tag read / write terminal 2. The IC chip 11 of the IC tag 3 has a central processing unit (CPU) 13, a memory 14, a transmission / reception circuit 15, and a power supply circuit 5, and the power supply circuit 5 obtains power from an antenna 12. The power supply circuit 5 is used not only for driving each part of the IC tag 3 but also for driving the temperature sensor 4. As the memory 14, a memory that does not require a power source is used.
The bearing-equipped electronic component 6 is a component that can be handled integrally by mounting the IC tag 3 and the temperature sensor 4 on a common substrate or the like. The output of the temperature sensor 4 is connected to, for example, a predetermined input terminal (not shown) of the IC tag 3. When an analog output sensor is used as the temperature sensor 4, the output is output to the IC tag 3 or the like via an A / D converter 16 that converts the output into a digital value. The A / D converter 16 is installed on a common substrate (not shown) or the like with the temperature sensor 4, and the temperature sensor 4 A with the converter is configured by the temperature sensor 4 and the A / D converter 16. The output of the temperature sensor 4A with the converter is connected to the central processing unit 13 of the IC tag 3 in the illustrated example, but may be connected to the transmission / reception circuit 15.

The tag read / write terminal 2 can transmit signals and supply power to the IC tag 3 in a non-contact manner. The tag read / write terminal 2 includes a central processing unit (CPU) 22, a memory 23, a transmission / reception circuit 24, and a power supply circuit 25, and the central processing unit (CPU) 22 and the IC tag 3 via the antenna 26 and the transmission / reception circuit 24. Signal transmission / reception is performed. The tag read / write terminal 2 further has communication means 27 for connecting to a computer serving as the management host machine 28 via a communication path 29. The communication path 29 may be a simple cable or a wireless communication line, or may be a local area network, the Internet, or another wide area network.
The management host machine 28 includes a management system that manages the maintenance of the entire bearing 1 of the mechanical equipment 10. The management host machine 28 may manage maintenance of the bearings 1 of the plurality of mechanical facilities 10.

In the above embodiment, the power supply circuit 5 for driving the temperature sensor 4 is the one built in the IC tag 3, but for example, as shown in FIG. 3, a power supply circuit 51 for driving the IC tag 3 and Alternatively, a power supply circuit 52 for driving the temperature sensor 4 may be provided. The power supply circuit 52 also obtains power from the antenna 12. Further, the power supply circuit 52 may be provided with a rechargeable battery 1 9 Contact and charging circuit (not shown) (FIG. 5).
The bearing-equipped electronic component 6 may include a vibration sensor 17 as shown in FIG. 4 in addition to the temperature sensor 4. The output of the vibration sensor 17 is connected to, for example, a predetermined input terminal (not shown) of the IC tag 3. When an analog output sensor is used as the vibration sensor 17, the output is input to the IC tag 3 or the like via an A / D converter 18 that converts the output into a digital value. The A / D converter 18 is installed on a common substrate (not shown) or the like with the vibration sensor 17, and the vibration sensor 17 and the A / D converter 18 constitute a temperature sensor 17A with a converter. The output of the vibration sensor 17A with the converter is connected to the CPU 13 of the IC tag 3 in the illustrated example, but may be connected to the transmission / reception circuit 15. When the vibration sensor 17 is provided, the power source may be a power circuit 51 built in the IC tag 3, or another power circuit 52 may be used as shown in FIG.

6 to 10 show specific examples of the mechanical equipment 10. As shown in FIG. 6, the machine facility 10 includes a conveyor line in which a plurality of belt conveyors 41 are arranged in series. This mechanical equipment 10 is, for example, a conveyor line that conveys coal from a coal storage unit to a boiler (not shown) in a thermal power plant.
As shown in FIG. 7, each belt conveyor 41 hangs the belt 7 between end rollers 42 at both ends, and a plurality of transport surface support rollers 8 and return support rollers 8 arranged in the transport direction at an intermediate portion. The belt 7 is supported by '. Both or one of the end rollers 42 at both ends is a driving roller. As shown in FIG. 8, each supporting roller 8 includes a horizontal central roller 8 aligned in the conveyor width direction and inclined side rollers 8 on both sides, and the belt 7 is reversed by these three rollers 8. Supports trapezoidal groove shape. The rollers 8 at the center and both sides constitute a bearing unit 8A in which the rolling bearings 1 are incorporated at both ends in the roller 8. FIG. 9 is an enlarged cross-sectional view of the bearing unit 8A. In addition to the example of FIG. 9, the bearing unit 8 </ b> A has a bearing housing 43 provided on the inner periphery of both ends of the roller 8 as shown in FIG. 10, and the rolling bearing 1 is fitted on the inner periphery of the bearing housing 43. It may be. The inner ring of the rolling bearing 1 is fitted to the roller support shaft 44, and the roller support shaft 44 is fixedly installed on the conveyor frame 9. The roller support shaft 44 may be supported at both ends with respect to the conveyor frame 9 or may be cantilevered. FIG. 10 shows an example of the side roller 8 in which the roller support shaft 44 is cantilevered.
The rolling bearing 1 of each of the rollers 8 in the mechanical equipment 10 including such a conveyor line is the bearing 1A with an IC tag / sensor to which the IC tag 3 and the temperature sensor 4 are attached as described above.

  FIG. 11 shows an example in which the terminal moving means 20 of the tag reading / writing terminal 2 is provided in the mechanical equipment 10 composed of such a conveyor line. The tag read / write terminal 2 is installed on a guide rail 45 provided along the rolling bearing 1 in the roller 8 so as to be able to run, and is driven to travel by a travel drive means 46. The guide rail 45 is, for example, a rail attached to the conveyor frame 9 (FIG. 8) or a part of the conveyor frame 8. The travel drive means 46 includes a motor 47 and a winding transmission means 49 that transmits the drive to the tag read / write terminal 2 or is a self-propelled device mounted on the tag read / write terminal 2.

The abnormality inspection method with the above configuration will be described. The tag receiver 2 is moved periodically or at any time to bring it close to the IC tag / sensor bearing 1A bearing. At this time, electric power is supplied to the power supply circuit 5 of the bearing 1A, the temperature sensor 4 is driven by the electric power, and the temperature sensor 4 is operated for an arbitrary time to perform temperature measurement. The temperature measurement value of the temperature sensor 4 is transmitted to the tag reading / writing terminal 2 through the central processing unit 13 and the transmission circuit 15 of the IC tag 3. In this case, only the maximum value of the temperature sensor 4 may be stored in the IC tag 3 and transmitted to the tag reading / writing terminal 2. The temperature measurement result transmitted to the tag reading / writing terminal 2 may always be transmitted to the management host machine 28 (FIG. 2), or only when a certain condition is reached, to the management host machine 28. May be. The determination as to whether or not the predetermined condition has been reached is made by condition determination means (not shown) provided in the tag read / write terminal 2. Such an operation may be performed on a large number of, for example, 100 bearings 1A with IC tags / sensors by one tag reading / writing terminal 2. Thus, a single tag reading / writing terminal 2 can monitor a large number of IC tag / sensor bearings 1A, and only the information when a certain condition of the IC tag / sensor bearings 1A is reached is managed by the management host machine. Therefore, it is only necessary to provide several tag reading / writing terminals 2 for several hundreds of IC tag / sensor-equipped bearings 1A in one machine facility 10, for example. As a result of temperature measurement, if a certain condition is exceeded, the bearing 1 may malfunction, but if it does not need to be replaced immediately, it should be monitored continuously as long as possible, The bearing 1 may be replaced at a time.

  For this reason, as in the case of the conventional continuous inspection, the power supply circuit 5 that transmits the IC tag 3 and the supplied power to the temperature sensor without attaching the transmission device and the power supply for continuous driving to each bearing unit 8A in addition to the temperature sensor. It is not necessary to provide a corresponding receiver for each bearing unit 8A. Therefore, the installation space is small and the equipment cost is low. For example, once every day or once every two hours, the monitoring interval may be determined and monitored intermittently. Since many bearings 1 can be monitored, even if there are many bearings 1 to be measured. Can do. Moreover, since it can replace | exchange before abnormality generate | occur | produces according to the result of temperature measurement, it does not lead to failure of mechanical equipment 10 itself, and does not need to damage mechanical equipment 10 itself. Further, since the bearing having a sign of failure can be replaced at the time of periodic maintenance when the mechanical equipment 10 is stopped, it is easy to carry out necessary inventory of a replacement bearing or a bearing unit.

  Further, since the IC tag 3 is used, the identification information of the rolling bearing 1 provided with the IC tag 3 can be stored in the IC tag 3. The identification information is a product number, a lot number, or the like. When the identification information of the bearing 1 is obtained together with the temperature measurement information, it is possible to know the specifications of the bearing from a database or the like, so that the life determination and management by the management host machine 28 and the like are further facilitated. The IC tag 3 may further store information on the installation location of the bearing 1 with respect to the mechanical equipment 10.

For storing the maximum value of the measurement result of the temperature sensor 4 in the IC tag 3 as described above, for example, the IC tag 3 may be configured as follows. That is, as shown in FIG. 12A , the IC tag 3 includes a maximum value storage unit 14a and a maximum value update unit 51. The maximum value updating means 51 compares the temperature detection value of the temperature sensor 4 when power is supplied by the tag reading / writing terminal 2 with the temperature detection value stored in the maximum value storage unit 14a, and sets the larger value as described above. It shall be stored in the maximum value storage unit. The IC tag 3 may be provided with an identification information storage unit 14b to store the identification information and the like.
The maximum value updating means 51 may be configured by an electronic circuit component or the like provided in the bearing-equipped electronic component 6 separately from the IC tag 3. The maximum value updating means 51 may be provided in the tag reading / writing terminal 2 instead of being provided in the IC tag / sensor-equipped bearing 1A. Also in this case, the IC tag 3 is provided with a maximum value storage unit 14a.

Moreover, when transmitting only when the measurement result of the temperature sensor 4 reaches a certain condition as described above, for example, the following configuration can be adopted. That is, as shown in FIG. 12 (B) , the IC tag 3 is provided with a condition storage unit 14c to store the certain condition. In addition, the tag reading / writing terminal 2 is provided with condition determination processing means 55 for performing processing according to the setting conditions of the setting condition storage unit 14c. When the condition storage unit 14c is provided in the IC tag 3 and the conditions are stored in this way, the condition determination processing means 55 provided in the tag reading / writing terminal 2 performs the same processing for the different bearings 1A with IC tag / sensor. Even if it is a thing, the process of the content corresponding to each bearing 1A can be performed.

  Although the above description of the operation has been performed when only the temperature sensor 4 is provided as a sensor, for example, when the vibration sensor 17 is provided as in the example of FIG. 4, the following processing can be performed. The life of the bearing 1 is also determined by vibration. If vibration information is obtained in addition to temperature information, a bearing abnormality can be determined with higher accuracy. For example, an integrated rotational speed storage processing unit (not shown) that stores the integrated rotational speed detected from the detection signal of the vibration sensor 17 is used as the IC tag 3 in the tag reading / writing terminal 2 or the bearing-equipped electronic component 6 or the like. By providing the parts, it is possible to determine the life based on the accumulated rotational speed. The integrated rotation speed is stored in the IC tag 3.

Next, with reference to FIGS. 13 to 22, various specific structural examples in which the bearing-equipped electronic component 6 such as the IC tag 3 is installed in the rolling bearing 1 will be described.
FIG. 13 shows an example in which the bearing-equipped electronic component 6 is attached to the bearing race. The rolling bearing 1 is configured such that a plurality of rolling elements 73 are interposed between facing rolling surfaces of an inner ring 71 and an outer ring 72 that are inner and outer races, and the rolling elements 73 are held by a cage 74. The rolling element 73 consists of a ball. Seals 75 for sealing the bearing space are provided at both ends between the inner and outer rings 71 and 72. The seal 75 is a contact seal that is attached to the outer ring 72 and has a tip that contacts the inner ring 71. The outer ring 72 is provided with a tag mounting hole 76 on the side surface, and the bearing-equipped electronic component 6 including the IC tag 3 and the temperature sensor 4 is mounted in the tag mounting hole 76 in an embedded state. The bearing-equipped electronic component 6 is obtained by mounting the IC tag 3 and the temperature sensor 4 on a substrate , and is embedded in the tag mounting hole 76 of the outer ring 72 and then fixed in a sealed state by a resin mold.
In this way, when the bearing-equipped electronic component 6 such as the IC tag 3 is fixed to the outer ring 72, the bearing-equipped electronic component 6 can be firmly fixed.

14A and 14B show an example in which the bearing-equipped electronic component 6 such as the IC tag 3 is attached to the seal 75 of the rolling bearing 1. FIG. 2A shows an example in which the seal 75 is a non-contact bearing, and the bearing-equipped electronic component 6 is fixed to the seal 75 by bonding with an adhesive. FIG. 7B shows an example in which the seal 75 is a contact bearing in the same manner as in the example of FIG. 13. The bearing-equipped electronic component 6 has a core metal of the seal 75 by vulcanization adhesion when the rubber material portion 75a of the seal 75 is vulcanized. Fix to 75b.
Since the manufacturing process of the race rings such as the inner ring 71 and the outer ring 72 is complicated and there are strict requirements in terms of strength, when the IC tag 3 or the temperature sensor 4 is incorporated, the number of processes increases. However, if the bearing-equipped electronic component 6 such as the IC tag 3 is attached to the seal 75 that is a simple component as described above, the mounting operation of the bearing-equipped electronic component 6 is easy. Further, when the bearing-equipped electronic component 6 is attached to the seal 75, the manufacturing process can be the same as that of a general bearing in which the IC tag 3 or the like is not attached to main bearing components such as the inner and outer rings 71 and 72 and the cage 74. Excellent in productivity.

FIGS. 15 and 16 show an example in which the bearing-equipped electronic component 6 such as the IC tag 3 is attached to the cage 74 of the rolling bearing 1. FIG. 15 corresponds to the B1-B1 cross-sectional view of FIG. The cage 74 is a comb-like or bowl-shaped resin. The seal 75 is provided only on one side of the bearing 1, omitting the side surface on the installation side of the bearing-equipped electronic component 6 so as not to hinder signal transmission and reception. The bearing-equipped electronic component 6 is obtained by mounting the IC tag 3 and the temperature sensor 4 on a substrate , and is embedded in a resin constituting the cage 74 by integral molding.
In addition to the integral molding, as shown in FIGS. 18 and 19, an IC tag mounting hole 78 is provided in the retainer 74, and after inserting the bearing-equipped electronic component 6 in the IC tag mounting hole 78, the hole 78 is provided. May be sealed with resin or the like. In this case, the retainer 74 is not limited to resin and may be made of metal.
In this way, even when the bearing-equipped electronic component 6 is fixed to the cage 74, the bearing-equipped electronic component 6 can be fixed by a simpler process than when the bearing-equipped electronic component 6 is fixed to the raceway.

20 and 21 show an example in which the IC tag 3 or the like is embedded in a solid lubricant 80 provided in the rolling bearing 1. 20 corresponds to a cross-sectional view along B3-B3 in FIG. The solid lubricant 80 is, for example, a resin material impregnated with grease. The solid lubricant 80 is provided in a ring shape in the bearing space between the inner ring 71 and the outer ring 72. The bearing-equipped electronic component 6 is obtained by mounting the IC tag 3 and the temperature sensor 4 on a substrate , and is embedded in, for example, a solid lubricant 80 by integral molding. In addition to integral molding, the bearing-equipped electronic component 6 is provided with an IC tag mounting hole 81 in a part of the solid lubricant 80 as shown in FIG. 23 and FIG. You can stop it.
Thus, when the bearing-equipped electronic component 6 is embedded in the solid lubricant 80, each bearing component is the same as a normal bearing, the mounting process of the bearing-equipped electronic component 6 is simple, and the components can be shared. I can plan.

It is a block diagram which shows the conceptual structure of the abnormality inspection system of the bearing with an IC tag sensor concerning one Embodiment of this invention. It is a block diagram which shows the circuit structural example of the bearing mounting electronic component and tag reading / writing terminal of the abnormality inspection system. It is a block diagram of the modification of a bearing equipped electronic component. It is a block diagram of the other modification of a bearing equipped electronic component. It is a block diagram of the other modification of a bearing equipped electronic component. It is a side view of an example of the conveyor line used as the mechanical equipment to which this invention is applied. It is a side view of one conveyor of the same conveyor line. It is a cross-sectional view of the conveyor. It is sectional drawing of the bearing unit used as the roller of the conveyor. It is sectional drawing of the modification of the bearing unit used as the roller of the conveyor. It is a side view which shows an example of the terminal moving means to which a tag reading / writing terminal is moved. (A) is a block diagram of a modified example of the conceptual configuration example of the IC tag, and (B) is a block diagram of a modified example of the conceptual configuration example of the IC tag and the tag read / write terminal. It is a fragmentary sectional view showing an example of a bearing with an IC tag sensor. (A), (B) is a fragmentary sectional view which shows the other example of a bearing with an IC tag and a sensor, respectively. It is a fragmentary sectional view which shows the other example of a bearing with an IC tag sensor. It is a partial front view of the bearing with the same IC tag and sensor. It is A1-A1 sectional view taken on the line of FIG. It is a partial front view of the further another example of a bearing with an IC tag sensor. It is A2-A2 sectional view taken on the line of FIG. It is a fragmentary sectional view which shows the other example of a bearing with an IC tag sensor. It is a partial front view of the bearing with the same IC tag and sensor. It is A3-A3 sectional view taken on the line of FIG. It is a partial front view of the further another example of a bearing with an IC tag sensor. It is A4-A4 sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rolling bearing 1A ... Bearing with IC tag sensor 2 ... Tag reading / writing terminal 3 ... IC tag 4 ... Temperature sensor 5 ... Power supply circuit 6 ... Electronic equipment 8 with bearing 8 ... Roller 8A ... Bearing unit
DESCRIPTION OF SYMBOLS 10 ... Mechanical equipment 12 ... Antenna 13 ... Central processing unit 17 ... Vibration sensor 20 ... Terminal moving means 71 ... Inner ring 72 ... Outer ring 74 ... Cage 75 ... Seal 80 ... Solid lubricant

Claims (14)

A power supply circuit that drives a rolling bearing incorporated in a mechanical facility, an IC tag, a temperature sensor, and a built-in IC tag or separated from the IC tag and fed from the outside of the bearing without contact. An abnormality inspection system for a bearing with an IC tag and a sensor provided with a tag reading and writing terminal that performs non-contact reading and writing of information with respect to the IC tag and power feeding to the power supply circuit. 2. The abnormality of the bearing with the IC tag / sensor according to claim 1, wherein the bearing with the IC tag / sensor has a vibration sensor in addition to the temperature sensor, and the power supply circuit can drive the vibration sensor. Inspection system. 3. The abnormality inspection system for a bearing with an IC tag / sensor according to claim 1, wherein identification information of a rolling bearing provided with the IC tag is stored in the IC tag. 4. The abnormality inspection system for a bearing with an IC tag / sensor according to claim 1, wherein the mechanical equipment includes a plurality of bearings with the IC tag / sensor. 5. An abnormality inspection system for a bearing with an IC tag / sensor according to claim 4, wherein a terminal moving means for moving the tag reading / writing terminal so as to be able to read / write and feed power along the arrangement of the bearing with the IC tag / sensor is provided. . 6. The IC tag according to claim 4, wherein the mechanical equipment is a conveyor line such as a belt conveyor or a roller conveyor, and the bearing with the IC tag / sensor is a belt for supporting a belt or a conveyor roller.・ Abnormality inspection system for bearings with sensors. 7. The mechanical equipment according to claim 6, wherein the mechanical equipment is a belt conveyor for transporting coal of a thermal power plant to a boiler, and the bearing with the IC tag / sensor is a bearing that is incorporated in a roller that supports the belt and supports the roller. Abnormality inspection system for bearings with IC tags and sensors. 5. The railroad vehicle according to claim 1, wherein the mechanical equipment is a railroad vehicle, the bearing with the IC tag / sensor is a wheel support bearing, and the railroad vehicle travels along a path on which the railcar travels. An abnormality inspection system for a bearing with an IC tag and a sensor in which the tag receiver is installed so that the IC tag can sometimes be read and the power supply circuit can be powered. A power supply circuit that drives a rolling bearing incorporated in a mechanical facility, an IC tag, a temperature sensor, and a built-in IC tag or separated from the IC tag and fed from the outside of the bearing without contact. The temperature sensor is driven periodically or at any time using a tag reading / writing terminal that performs contactless reading / writing of stored information on the IC tag and power supply to the power supply circuit. And a method for inspecting an abnormality of a bearing with an IC tag / sensor that reads stored information of the IC tag. An IC tag having a rolling bearing, an IC tag, a temperature sensor, and a power supply circuit that is built in the IC tag or separated from the IC tag and is supplied in a non-contact manner and is fed from outside the bearing to drive the sensor. Bearing with sensor. 11. The bearing with an IC tag / sensor according to claim 10, wherein the IC tag, the temperature sensor, and the power supply circuit are fixed to a raceway of a rolling bearing. 11. The bearing with an IC tag / sensor according to claim 10, wherein the IC tag, the temperature sensor, and the power supply circuit are fixed to a seal of the rolling bearing. The bearing with an IC tag / sensor according to claim 10, wherein the IC tag, the temperature sensor, and the power supply circuit are fixed to a cage of a rolling bearing. 11. The bearing with an IC tag / sensor according to claim 10, wherein the IC tag, the temperature sensor, and the power supply circuit are embedded in a solid lubricant provided in the rolling bearing.

Images