CN220708438U - Tunnel boring machine main bearing monitoring device and tunnel boring machine adopting same - Google Patents
Tunnel boring machine main bearing monitoring device and tunnel boring machine adopting same Download PDFInfo
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- CN220708438U CN220708438U CN202321997551.0U CN202321997551U CN220708438U CN 220708438 U CN220708438 U CN 220708438U CN 202321997551 U CN202321997551 U CN 202321997551U CN 220708438 U CN220708438 U CN 220708438U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 12
- 230000005641 tunneling Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012208 gear oil Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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Abstract
The utility model discloses a monitoring device of a main bearing of a tunnel boring machine and the tunnel boring machine adopting the same, which utilizes a non-contact type clearance sensor to monitor the axial clearance of the main bearing in real time, utilizes a temperature and pressure integrated sensor to monitor the temperature and pressure of a sealed position of the main bearing in real time, utilizes a vibration sensor to monitor vibration of the main bearing in real time and utilizes a strain sensor to monitor strain of the main bearing in real time, thereby being beneficial to comprehensively evaluating the running state of the main bearing, being capable of finding faults of the main bearing in time and improving the running safety and reliability of the tunnel boring machine.
Description
Technical Field
The utility model relates to the technical field of tunnel boring machine monitoring, in particular to a monitoring device of a main bearing of a tunnel boring machine, and in addition, the utility model particularly relates to a tunnel boring machine adopting the monitoring device.
Background
The tunnel boring machine is used as underground engineering equipment, the construction environment is complex and bad, the main bearing is used as a key component of the tunnel boring machine, the axial force, the radial force and the overturning moment brought by forward tunneling are borne, meanwhile, the impact load transmitted by the cutterhead is borne, the working state and the efficiency of the tunnel boring machine are directly influenced by the running state of the main bearing, and once the main bearing fails, the main bearing is difficult to replace and repair, and the loss is immeasurable. Because the installation position of the main bearing is closed, the operation state monitoring mode of the main bearing is insufficient, and the monitoring quantity related to the main bearing at present mainly comprises gear oil tank temperature, gear oil flow, lubricating grease pressure and the like, and the monitoring quantity mainly monitors the lubrication condition of the main bearing and the grease injection condition at the sealing position, and has limited monitoring effect on the faults of the main bearing. In addition, although the abrasion state of the main bearing of the heading machine can be measured through ferrographic analysis and spectral analysis, the gear oil is required to be sampled and then analyzed in a laboratory, the cost of analysis equipment is high, and real-time detection and analysis cannot be performed on a construction site.
Disclosure of Invention
The utility model provides a monitoring device for a main bearing of a tunnel boring machine and the tunnel boring machine adopting the same, and solves the technical problem that the monitoring effect of the existing main bearing monitoring mode on the main bearing faults is limited.
According to one aspect of the utility model, a monitoring device for a main bearing of a tunneling machine is provided, and the monitoring device comprises a play sensor, a vibration sensor, a strain sensor, a temperature and pressure integrated sensor, a data acquisition module, a processor and a display, wherein the play sensor, the vibration sensor, the strain sensor and the temperature and pressure integrated sensor are all arranged on the main bearing and are respectively used for monitoring the play of the main bearing, vibration of the main bearing, strain of the main bearing, sealing temperature and pressure of the main bearing in real time, and the data acquisition module is respectively electrically connected with the play sensor, the vibration sensor, the strain sensor, the temperature and pressure integrated sensor and the processor and is used for acquiring monitoring data of each sensor and transmitting the monitoring data to the processor, and the display is electrically connected with the processor and is used for displaying all monitoring data of the main bearing in real time.
Further, four measuring points are uniformly arranged on the main bearing along the circumferential direction, and a clearance sensor, a vibration sensor, a strain sensor and a temperature and pressure integrated sensor are arranged at the position of each measuring point.
Further, the clearance sensor is arranged on a sensor support of a hollow structure, the tail end of the sensor support is fixedly arranged on the main drive gearbox, the front end of the sensor support extends to the end face of the main bearing inner gear ring, the clearance sensor is arranged at the front end of the sensor support, the probe end face of the clearance sensor is parallel to the end face of the main bearing inner gear ring, a gap is reserved between the two end faces, and a small hole is formed in the tail end of the sensor support for a sensor cable to extend out.
Further, the front end of the sensor bracket is provided with a threaded hole, the tail part of the clearance sensor is provided with external threads, and the clearance sensor is fixed at the front end of the sensor bracket through threaded connection.
Further, a sensor mounting hole with a through hole at the bottom is formed in the main bearing outer sealing ring, the bottom of the sensor mounting hole is communicated with the sealing structure of the main bearing, the temperature and pressure integrated sensor is fixedly mounted in the sensor mounting hole, the probe of the sensor is communicated with the sealing structure of the main bearing, the top of the sensor mounting hole is plugged through a plugging block, and mutually communicated cable holes are formed in the main bearing outer sealing ring, the main bearing inner ring, the main bearing outer ring and the main driving gearbox so as to allow a sensor cable to extend.
Further, the probe of the temperature and pressure integrated sensor is provided with external threads, the bottom through hole of the sensor mounting hole is provided with internal threads, and the temperature and pressure integrated sensor is fixedly mounted at the bottom through hole of the sensor mounting hole through threaded connection.
Further, a through hole is formed in the main driving gearbox along the axial direction, and the vibration sensor and the strain sensor are mounted on the outer ring of the main bearing through the through hole.
Further, the vibration sensor is mounted on the main bearing outer ring in a magnetic attraction mode through the magnetic base, and the strain sensor is mounted on the main bearing outer ring in a pasting mode.
Further, the data acquisition module comprises an IO module, a PLC, a data acquisition card and an industrial personal computer, wherein the IO module is respectively and electrically connected with the temperature and pressure integrated sensor and the PLC, the data acquisition card is respectively and electrically connected with the clearance sensor, the vibration sensor, the strain sensor and the industrial personal computer, and the PLC and the industrial personal computer are electrically connected with the processor.
In addition, the utility model also provides a tunnel boring machine which adopts the monitoring device.
The utility model has the following effects:
according to the monitoring device for the main bearing of the tunnel boring machine, the non-contact type play sensor is utilized to monitor the axial play of the main bearing in real time, the temperature and the pressure of the sealing position of the main bearing are monitored in real time by utilizing the temperature and pressure integrated sensor, the vibration of the main bearing is monitored in real time by utilizing the vibration sensor, and the strain of the main bearing is monitored in real time by utilizing the strain sensor, so that the real-time monitoring of the play, the vibration, the strain of the main bearing and the temperature and the pressure of the sealing position of the main bearing is facilitated, the fault of the main bearing can be found in time, and the running safety and the running reliability of the tunnel boring machine are improved.
In addition, the tunnel boring machine of the present utility model also has the above-described advantages.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic block diagram of a monitoring device for a main bearing of a tunnel boring machine according to a preferred embodiment of the present utility model.
FIG. 2 is a schematic diagram of the distribution of measurement points on a main bearing of a preferred embodiment of the present utility model.
Fig. 3 is a schematic view of the mounting structure of the play sensor of the preferred embodiment of the present utility model.
Fig. 4 is a schematic view of the installation structure of the temperature and pressure integrated sensor according to the preferred embodiment of the present utility model.
Fig. 5 is a schematic view showing the mounting structure of the vibration sensor and the strain sensor according to the preferred embodiment of the present utility model.
Description of the reference numerals
1. A main bearing ring gear; 2. an outer ring of the main bearing; 3. a main drive gearbox; 4. a play sensor; 5. a sensor holder; 6. a bolt; 7. a main bearing outer seal ring; 8. a block; 9. a cable hole; 10. a temperature and pressure integrated sensor; 11. a probe; 12. and a through hole.
Detailed Description
Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.
It will be appreciated that as shown in fig. 1, a preferred embodiment of the present utility model provides a monitoring device for a main bearing of a tunneling machine, including a play sensor, a vibration sensor, a strain sensor, a temperature and pressure integrated sensor, a data acquisition module, a processor and a display, where the play sensor, the vibration sensor, the strain sensor and the temperature and pressure integrated sensor are all installed on the main bearing and are respectively used for monitoring play of the main bearing, vibration of the main bearing, strain of the main bearing, sealing temperature and pressure of the main bearing in real time, the data acquisition module is respectively and electrically connected with the play sensor, the vibration sensor, the strain sensor, the temperature and pressure integrated sensor and the processor and is used for acquiring monitoring data of each sensor and transmitting the data to the processor, and the processor is then used for comprehensively evaluating the running state of the main bearing according to the acquired monitoring data so as to find faults of the main bearing in time, and the display is electrically connected with the processor and is used for displaying all the monitoring data of the main bearing in real time.
It can be understood that the monitoring device for the main bearing of the tunnel boring machine of the embodiment utilizes the non-contact type clearance sensor to monitor the axial clearance of the main bearing in real time, utilizes the temperature and pressure integrated sensor to monitor the temperature and pressure of the sealed position of the main bearing in real time, utilizes the vibration sensor to monitor the vibration of the main bearing in real time and utilizes the strain sensor to monitor the strain of the main bearing in real time, thereby being beneficial to comprehensively evaluating the running state of the main bearing, being capable of finding the fault of the main bearing in time and improving the running safety and reliability of the tunnel boring machine.
It can be understood that the data acquisition module comprises an IO module, a PLC, a data acquisition card and an industrial personal computer, wherein the IO module is respectively and electrically connected with the temperature and pressure integrated sensor and the PLC, the IO module is used for acquiring low-frequency signals such as sealing temperature and sealing pressure of the main bearing, the data acquisition card is respectively and electrically connected with the clearance sensor, the vibration sensor, the strain sensor and the industrial personal computer, the data acquisition card is used for acquiring high-frequency signals such as the clearance of the main bearing, vibration of the main bearing and strain of the main bearing, and the PLC and the industrial personal computer are electrically connected with the processor. The process of comprehensively evaluating the running state of the main bearing by the processor based on the collected monitoring data belongs to the prior art, and specific contents are not described herein. For example, the processor stores each item of monitoring data after acquiring the monitoring data, and then extracts time domain characteristic values of the high-frequency signal monitoring data, such as a maximum value, a minimum value, an effective value, an average value, kurtosis, margin, a waveform factor and the like, while the low-frequency signal monitoring data is directly analyzed by a real-time value; performing FFT (fast Fourier transform) on the high-frequency signal monitoring data to extract frequency spectrum data, setting a threshold value of a time domain index, judging whether the index is abnormal according to the threshold value, drawing a change trend of each time domain index according to time, analyzing the change condition of each index by using a trend graph, and comprehensively evaluating whether the index is abnormal; then, drawing a frequency spectrum waterfall graph, analyzing whether abnormal frequency components exist according to the frequency spectrum waterfall graph, finding out abnormal states of the main bearing in time, calculating fault characteristic frequencies of different monitoring amounts of the main bearing, analyzing frequency spectrum data according to the fault characteristic frequencies, judging whether the main bearing is abnormal or not, and finally comprehensively evaluating the running state of the main bearing according to a time domain analysis result and a frequency domain analysis result.
Optionally, as shown in fig. 2, four measuring points are uniformly arranged on the main bearing along the circumferential direction, and a play sensor, a vibration sensor, a strain sensor and a temperature and pressure integrated sensor are installed at each measuring point, so that accuracy and reliability of a monitoring result are improved by adopting a multi-point monitoring mode. Of course, in other embodiments, the number and distribution of the measuring points may be adjusted according to actual needs, which is not specifically limited herein.
Optionally, as shown in fig. 3, the play sensor 4 is mounted on a sensor support 5 with a hollow structure, a through hole is axially formed in the main driving gearbox 3, the tail end of the sensor support 5 is fixedly mounted on the main driving gearbox 3 through a bolt 6, that is, is mounted in the through hole, the front end of the sensor support 5 extends to the end face of the main bearing ring gear 1, the play sensor 4 is mounted at the front end of the sensor support 5, the probe end face of the play sensor 4 is parallel to the end face of the main bearing ring gear 1, a gap is reserved between the two end faces, and a small hole is formed in the tail end of the sensor support 5 for the sensor cable to extend. The front end of the sensor bracket 5 is provided with a threaded hole, the tail part of the clearance sensor 4 is provided with external threads, and the clearance sensor 4 is fixed at the front end of the sensor bracket 5 through threaded connection.
It can be understood that the sensor bracket 5 is installed through the hole on the gearbox, and then the non-contact type clearance sensor 4 is installed on the sensor bracket 5, so that the non-contact type clearance sensor 4 is installed at the end face of the main bearing inner gear ring 1 to monitor the axial clearance of the main bearing in real time, the installation structure of the sensor is simple, the later maintenance is convenient, and the sensor can adapt to complex working conditions such as overlarge vibration during the main shaft operation. And moreover, the sensor bracket 5 adopts a hollow structure and a tail end opening design, so that a sensor cable is convenient to stretch out, the power supply problem of the sensor is solved, and long-term real-time monitoring can be realized.
Optionally, as shown in fig. 4, a sensor mounting hole with a through hole at the bottom is formed in the main bearing outer sealing ring 7, the bottom of the sensor mounting hole is communicated with the sealing structure of the main bearing, the temperature and pressure integrated sensor 10 is fixedly mounted in the sensor mounting hole, the probe 11 of the sensor is communicated with the sealing structure of the main bearing, the top of the sensor mounting hole is plugged by a plugging block 8, the plugging block 8 is fixed on the main bearing outer sealing ring 7 by a bolt 6, and cable holes 9 which are mutually communicated are formed in the main bearing outer sealing ring 7, the main bearing inner gear ring 1, the main bearing outer ring 2 and the main drive gearbox 3 so as to allow a sensor cable to extend. The probe 11 of the temperature and pressure integrated sensor 10 is provided with external threads, the bottom through hole of the sensor mounting hole is provided with internal threads, and the temperature and pressure integrated sensor 10 is fixedly mounted at the bottom through hole of the sensor mounting hole through threaded connection.
It can be understood that by installing the temperature and pressure integrated sensor 10 at the bottom through hole of the installation hole on the main bearing outer sealing ring 7, the sensor probe directly contacts grease at the sealing position, so that the temperature and pressure at the sealing position of the main bearing can be effectively monitored when the heading machine operates.
Optionally, as shown in fig. 5, a through hole 12 is formed in the main driving gearbox 3 along the axial direction, and the vibration sensor and the strain sensor are mounted on the main bearing outer ring 2 through the through hole 12 so as to monitor vibration and strain of the main bearing outer ring 2. The vibration sensor is arranged on the main bearing outer ring 2 in a magnetic attraction mode through a magnetic base, and the strain sensor is arranged on the main bearing outer ring 2 in a pasting mode.
It can be understood that the vibration sensor and the strain sensor can be directly arranged on the main bearing outer ring 2 through partial holes on the gearbox, so that the main bearing is convenient to install and maintain, and the vibration and the strain of the main bearing can be effectively monitored for a long time by adopting a wired transmission mode.
In addition, another embodiment of the utility model also provides a tunneling machine, preferably adopting the monitoring device.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a monitoring devices of tunnel boring machine main bearing, its characterized in that includes clearance sensor, vibration sensor, strain sensor, temperature and pressure integration sensor, data acquisition module, treater and display, clearance sensor, vibration sensor, strain sensor and temperature and pressure integration sensor all install on the main bearing, are used for carrying out real-time supervision to main bearing clearance, main bearing vibration, main bearing strain, main bearing seal temperature and pressure respectively, data acquisition module respectively with clearance sensor, vibration sensor, strain sensor, temperature and pressure integration sensor, treater electric connection for gather the monitoring data of each sensor and transmit to the treater, display and treater electric connection are used for each item monitoring data of real-time display main bearing.
2. The monitoring device for the main bearing of the tunnel boring machine according to claim 1, wherein four measuring points are uniformly arranged on the main bearing along the circumferential direction, and a play sensor, a vibration sensor, a strain sensor and a temperature and pressure integrated sensor are arranged at the positions of each measuring point.
3. The monitoring device for the main bearing of the tunnel boring machine according to claim 1, wherein the play sensor is mounted on a sensor support of a hollow structure, the tail end of the sensor support is fixedly mounted on the main driving gearbox, the front end of the sensor support extends to the end face of the main bearing inner gear ring, the play sensor is mounted at the front end of the sensor support, the probe end face of the play sensor is parallel to the end face of the main bearing inner gear ring, a gap is reserved between the probe end face and the two end faces, and a small hole is reserved at the tail end of the sensor support for the sensor cable to extend.
4. A tunnel boring machine main bearing monitoring device according to claim 3, wherein the front end of the sensor bracket is provided with a threaded bore, the tail of the clearance sensor is provided with external threads, and the clearance sensor is fixed at the front end of the sensor bracket by threaded connection.
5. The monitoring device for the main bearing of the tunneling machine according to claim 1, wherein a sensor mounting hole with a through hole at the bottom is formed in the outer sealing ring of the main bearing, the bottom of the sensor mounting hole is communicated with the sealing structure of the main bearing, the temperature and pressure integrated sensor is fixedly arranged in the sensor mounting hole, the probe of the sensor is communicated with the sealing structure of the main bearing, the top of the sensor mounting hole is blocked by a blocking block, and mutually communicated cable holes are formed in the outer sealing ring of the main bearing, the inner ring of the main bearing, the outer ring of the main bearing and the main driving gearbox for extending out of a sensor cable.
6. The monitoring device for the main bearing of the tunnel boring machine according to claim 5, wherein the probe of the temperature and pressure integrated sensor is provided with external threads, the bottom through hole of the sensor mounting hole is provided with internal threads, and the temperature and pressure integrated sensor is fixedly mounted at the bottom through hole of the sensor mounting hole through threaded connection.
7. A tunnel boring machine main bearing monitoring device according to claim 1, wherein the main drive gearbox is provided with a through hole in the axial direction through which the vibration sensor and strain sensor are mounted on the main bearing outer race.
8. A tunnel boring machine main bearing monitoring device according to claim 7, wherein the vibration sensor is magnetically mounted to the main bearing outer race via a magnetic mount, and the strain sensor is adhesively mounted to the main bearing outer race.
9. The monitoring device for the main bearing of the tunnel boring machine according to claim 1, wherein the data acquisition module comprises an IO module, a PLC, a data acquisition card and an industrial personal computer, the IO module is respectively and electrically connected with the temperature and pressure integrated sensor and the PLC, the data acquisition card is respectively and electrically connected with the clearance sensor, the vibration sensor, the strain sensor and the industrial personal computer, and the PLC and the industrial personal computer are respectively and electrically connected with the processor.
10. A tunnel boring machine, characterized in that a monitoring device according to any one of claims 1-9 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321997551.0U CN220708438U (en) | 2023-07-27 | 2023-07-27 | Tunnel boring machine main bearing monitoring device and tunnel boring machine adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321997551.0U CN220708438U (en) | 2023-07-27 | 2023-07-27 | Tunnel boring machine main bearing monitoring device and tunnel boring machine adopting same |
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| Publication Number | Publication Date |
|---|---|
| CN220708438U true CN220708438U (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321997551.0U Active CN220708438U (en) | 2023-07-27 | 2023-07-27 | Tunnel boring machine main bearing monitoring device and tunnel boring machine adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220708438U (en) |
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2023
- 2023-07-27 CN CN202321997551.0U patent/CN220708438U/en active Active
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