Mould joint opening monitoring device and three-row-column variable pitch bearing assembly

Abstract

The utility model provides a parting surface opening monitoring device and a three-row column variable pitch bearing assembly, and belongs to the technical field of bearing monitoring, the parting surface opening monitoring device comprises a first base, a second base, a test circuit and a force sensitive resistor, the first base is used for being installed on a first outer ring of a three-row column variable pitch bearing; the second base is used for being installed on a second outer ring of the three-row-column variable pitch bearing. The test circuit is arranged in the first base and / or the second base; two ends of the force sensitive resistor are respectively connected with the first base and the second base, the force sensitive resistor is electrically connected with the test circuit to form a closed loop, and the test circuit is used for monitoring the force sensitive resistor. According to the parting surface opening monitoring device provided by the utility model, the micro-opening drives the power sensitive resistor to deform to generate voltage signal change, the test circuit acquires and processes the voltage signal change, the micro-opening is converted into real-time high-precision digital signal fluctuation, and the measuring precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing monitoring, in particular to a parting surface opening monitoring device and a three-row column variable pitch bearing assembly. Background Art

[0002] The three-row column pitch bearing is the most widely used bearing type in the current wind turbine pitch system. The three-row column pitch bearing includes an inner ring and an outer ring. In order to facilitate the installation of the rolling elements in the bearing, the outer ring includes a first outer ring and a second outer ring that are press-fitted. The mating surfaces of the first outer ring and the second outer ring form the parting surface of the outer ring.

[0003] As the capacity of wind turbines increases, bearing sizes are getting larger and larger, and operating loads are becoming more severe. During actual operation, the opening of the outer ring parting surface is very likely to occur, and since the opening size is small and difficult to detect, it will lead to further deterioration of the problem, directly affecting the efficiency of wind power conversion and the safety of the equipment. Therefore, it is necessary to monitor the tiny opening of the parting surface of the pitch bearing ring in real time.

[0004] At present, the opening monitoring of the parting surface of the three-row column pitch bearing is generally carried out through displacement sensors. The opening of the parting surface is reflected by detecting the distance to a certain end face of the bearing. The measurement result is easily affected by the vibration of the surrounding environment and produces errors, and the measurement accuracy is low. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defect of low measurement accuracy in the prior art of monitoring the opening of the parting surface of a three-row column pitch bearing by a position sensor, thereby providing a parting surface opening monitoring device and a three-row column pitch bearing assembly.

[0006] In order to solve the above technical problems, the utility model provides a parting surface opening monitoring device, comprising:

[0007] A first base, used for mounting on a first outer ring of a three-row column pitch bearing;

[0008] A second base is used for mounting on a second outer ring of the three-row column pitch bearing;

[0009] A test circuit, arranged inside the first base and / or the second base;

[0010] A force-sensitive resistor, both ends of which are respectively connected to the first base and the second base, the force-sensitive resistor is electrically connected to the test circuit to form a closed loop, and the test circuit is used to monitor the force-sensitive resistor.

[0011] Optionally, the test circuit includes a charging and discharging module, a digital-to-analog conversion module, a communication transmission module and a single-chip microcomputer module, and the single-chip microcomputer module is electrically connected to the charging and discharging module, the digital-to-analog conversion module, and the communication transmission module respectively.

[0012] Optionally, it also includes:

[0013] A power supply module is electrically connected to the test circuit and is used to supply power to the test circuit.

[0014] Optionally, the power supply module is arranged inside the second base, and the test circuit is arranged inside the first base.

[0015] Optionally, there are two force-sensitive resistors, both connected to the test circuit.

[0016] Optionally, it also includes:

[0017] A fastening assembly is provided on both the first base and the second base, and is used to fasten the force-sensitive resistor.

[0018] Optionally, a clamping assembly is disposed on both the first base and the second base, and the clamping assembly includes a first clamping member and a second clamping member disposed opposite to each other;

[0019] There is a clamping area between the first clamping member and the second clamping member, and there is an adjustment gap between the first clamping member and the second clamping member. One end of the force-sensitive resistor is inserted in the clamping area, and the fastening component is connected to the clamping component so that the clamping component holds the force-sensitive resistor tightly.

[0020] Optionally, the fastening assembly comprises:

[0021] A first clamping member;

[0022] The second clamping hoop member is arranged opposite to the first clamping hoop member, and the first clamping hoop member and the second clamping hoop member are connected by a connecting member to clamp the clamping assembly.

[0023] Optionally, the first base and the first outer ring, as well as the second base and the second outer ring, are detachably connected.

[0024] The utility model also provides a three-row column variable pitch bearing assembly, comprising:

[0025] Bearing body;

[0026] The parting surface opening monitoring device described in any of the above items has one or more, and the parting surface opening monitoring device is arranged on the outer ring of the bearing body to monitor the opening condition of the parting surface of the bearing body.

[0027] The technical solution of the utility model has the following advantages:

[0028] 1. The parting surface opening monitoring device provided by the utility model comprises a first base, a second base, a test circuit and a force-sensitive resistor, wherein the test circuit is arranged inside the first base and / or the second base, two ends of the force-sensitive resistor are respectively connected to the first base and the second base, the force-sensitive resistor is electrically connected to the test circuit to form a closed loop, and the test circuit is used to monitor the force-sensitive resistor;

[0029] By installing the first base and the second base on the first outer ring and the second outer ring respectively, when the parting surface opens slightly, the dynamic sensitive resistor is deformed to generate a voltage signal change. The test circuit collects and processes the voltage signal change to complete the real-time monitoring of the opening size of the parting surface. The tiny opening is converted into real-time high-precision digital signal fluctuations with high measurement accuracy. The first base and the second base only need to be arranged on the two outer rings on both sides of the parting surface, and the position requirements are not high. The monitoring method is simple and fast. It can be applied to bearings of different specifications and sizes, with high versatility and multi-scenario practicality.

[0030] 2. The parting surface opening monitoring device provided by the utility model, the test circuit includes a charging and discharging module, a digital-to-analog conversion module, a communication transmission module and a single-chip microcomputer module, the single-chip microcomputer module is electrically connected to the charging and discharging module, the digital-to-analog conversion module and the communication transmission module respectively, and also includes a power supply module to supply power to the test circuit, the charging and discharging module is used to control the input and output voltage adjustment of the power supply module, the digital-to-analog conversion module is used for converting electrical signals and digital signals, the single-chip microcomputer module can realize the automatic control of each module of the test circuit, including starting and stopping, signal conversion, signal processing and signal transmission, the communication transmission module is used to output the processed digital signal to the outside, and can also receive external command signals;

[0031] The external communication transmission module sends a power-on command to the single-chip microcomputer module. The single-chip microcomputer module controls the charging and discharging module to complete the power-on preparation of the equipment. At the same time, the collected real-time digital signal is reset to zero. After the preparation is completed, the opening size measurement begins. When the parting surface of the three-row column variable pitch bearing ring opens slightly, the dynamic sensitive resistor will be deformed and the voltage signal will change. The electrical signal generates a real-time digital test signal through the digital-to-analog conversion module. The single-chip microcomputer module processes the digital signal according to the set sampling frequency and required accuracy, and then outputs it to the external monitoring end through the communication transmission module to complete the real-time monitoring of the opening size.

[0032] 3. In the parting surface opening monitoring device provided by the utility model, the power module is arranged inside the second base, and the test circuit is arranged inside the first base. The test circuit inside the first base, the power module and the loop inside the second base are connected in series with the force-sensitive resistor to form a closed loop. There is no complex external wiring, and the overall structural connection is more compact.

[0033] 4. The parting surface opening monitoring device provided by the utility model has two force-sensitive resistors, both of which are connected to the test circuit. The setting of the two force-sensitive resistors connects the test circuit and the power module in series, and all external connections are completed through the force-sensitive resistors. The setting of the two force-sensitive resistors further improves the measurement accuracy.

[0034] 5. The parting surface opening monitoring device provided by the utility model also includes a fastening assembly. The fastening assemblies on the first base and the second base are used to fasten the force-sensitive resistor. The setting of the fastening assembly ensures the firmness of the series circuit and avoids affecting the measurement accuracy after disengagement.

[0035] 6. The utility model provides a parting surface opening monitoring device, and clamping assemblies are arranged on the first base and the second base, and the clamping assembly includes a first clamping member and a second clamping member that are arranged relatively to each other, and the clamping area between the two clamping members is used to clamp the force-sensitive resistor, and the setting of the adjustment gap between the first clamping member and the second clamping member ensures that the force-sensitive resistor can be clamped to the maximum extent, further ensures the stability of the clamping, and can adapt to force-sensitive resistors of different specifications.

[0036] 7. The parting surface opening monitoring device provided by the utility model comprises a fastening assembly including a first clamping member and a second clamping member, the first clamping member and the second clamping member are connected by a connecting member, and the clamping assembly is clamped by the connection between the two clamping members, thereby achieving the clamping of the force sensitive resistor.

[0037] 8. The parting surface opening monitoring device provided by the utility model has a detachable connection between the first base and the first outer ring, and between the second base and the second outer ring. The detachable connection makes the monitoring device reusable, and the specifications of the first base and the second base can be set to standard specifications. Only force-sensitive resistors of different lengths need to be set to monitor the opening of the parting surfaces of different bearings.

[0038] 9. The three-row column variable pitch bearing assembly provided by the utility model includes a bearing body and a parting surface opening monitoring device. Since the device adopts a parting surface opening monitoring device, any one of the advantages mentioned above can be realized, and the setting of multiple monitoring devices can also monitor the distribution trend of the entire circle of opening, providing the staff with a design basis for the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A schematic structural diagram of a specific implementation of a parting surface opening monitoring device provided in an embodiment of the utility model;

[0041] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure;

[0042] Figure 3 for Figure 1 Control diagram of the monitoring device;

[0043] Figure 4 for Figure 1 A schematic diagram of the structure of the fastening assembly and the clamping assembly;

[0044] Figure 5 for Figure 4 A schematic diagram of the structure of the clamping assembly;

[0045] Figure 6 for Figure 4 Schematic diagram of the structure of the fastening assembly.

[0046] Description of reference numerals:

[0047] 1. First base; 2. First outer ring; 3. Second base; 4. Second outer ring; 5. Force-sensitive resistor; 6. Charging and discharging module; 7. Digital-to-analog conversion module; 8. Communication transmission module; 9. Single-chip microcomputer module; 10. Power module; 11. Fastening assembly; 12. Clamping assembly; 13. First clamping piece; 14. Second clamping piece; 15. Clamping area; 16. Adjusting gap; 17. First clamping piece; 18. Second clamping piece; 19. Connecting piece; 20. Outer ring; 21. Parting surface; 22. Communication output interface; 23. Power access interface; 24. Magnetic base. DETAILED DESCRIPTION

[0048] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] At present, when monitoring is carried out through displacement sensors, it is easy to be affected by the vibration of the surrounding environment and produce errors, and the measurement accuracy is low. The reasons are: the displacement sensor is generally installed on the bearing surface with viscose, and the vibration of the bearing operation will cause the sensor to deflect or vibrate. The actual measured displacement distance is not the ideal distance between fixed end points, and the variation fluctuations are extremely large; the outer end surface of the bearing is relatively rough, and the general displacement sensor accuracy is μm level. When measuring the end-to-end specific point distance, the outer surface roughness is greater than the accuracy, which will also cause the displacement sensor measurement results to fluctuate greatly; when there is an obvious opening visible to the naked eye, the displacement sensor can reflect it, but a small opening cannot be accurately measured by the displacement sensor. A single high-precision displacement sensor is expensive, and the actual wind field detection application cost is too high to be promoted.

[0053] The parting surface opening monitoring device provided in this embodiment is arranged in the parting surface opening monitoring of the three-row column pitch bearing, and can also be used in other opening monitoring components.

[0054] like Figures 1 to 3As shown, a specific implementation of the parting surface opening monitoring device provided in this embodiment includes a first base 1, a second base 3, a test circuit and a force-sensitive resistor 5, the first base 1 is used to be installed on the first outer ring 2 of the three-row column pitch bearing; the second base 3 is used to be installed on the second outer ring 4 of the three-row column pitch bearing; the test circuit is arranged inside the first base 1 and / or the second base 3; the two ends of the force-sensitive resistor 5 are respectively connected to the first base 1 and the second base 3, the force-sensitive resistor 5 is electrically connected to the test circuit to form a closed loop, and the test circuit is used to monitor the force-sensitive resistor 5.

[0055] By installing the first base 1 and the second base 3 on the first outer ring 2 and the second outer ring 4 respectively, when the parting surface 21 opens slightly, the dynamic sensitive resistor 5 is deformed to generate a voltage signal change. The test circuit collects and processes the voltage signal change to complete the real-time monitoring of the opening size of the parting surface 21. The tiny opening is converted into real-time high-precision digital signal fluctuations with high measurement accuracy. The first base 1 and the second base 3 only need to be arranged on the two outer rings on both sides of the parting surface 21, and the position requirements are not high. The monitoring method is simple and fast. It can be applied to bearings of different specifications and sizes, with high versatility and multi-scenario practicality.

[0056] Specifically, the first base 1 and the second base 3 have an inner cavity, and the test circuit can be set in one of the inner cavities, or in both inner cavities; the first base 1 and the second base 3 are arranged opposite to each other, and the force-sensitive resistor 5 is parallel to the axis of the bearing, so that the measurement is more accurate.

[0057] Specifically, the force-sensitive resistor 5 can be a strain resistor wire, which can be a metal strain resistor, a semiconductor strain resistor, or an alloy strain resistor; the mechanical force is converted into an electrical signal, and the resistance value changes with the magnitude of the external force. The length of the force-sensitive resistor 5 can be selected to be longer, and the excess part can be prevented from being inside the first base 1 and the second base 3. When a longer force-sensitive resistor 5 is needed to replace the bearing, it can be pulled out to the set length without replacing the force-sensitive resistor 5.

[0058] Specifically, the first base 1 is the main base, in which a test circuit can be installed, and the second base 3 is the auxiliary base for installing other electrical components or only setting up a loop; the first base 1 is provided with a communication output interface 22 and a power access interface 23, the test circuit sends out the signal through the communication output interface 22, and the power access interface 23 can power the test circuit through an external power supply.

[0059] like Figure 3As shown, the parting surface opening monitoring device provided in this embodiment, the test circuit includes a charging and discharging module 6, a digital-to-analog conversion module 7, a communication transmission module 8 and a single-chip computer module 9, and the single-chip computer module 9 is electrically connected to the charging and discharging module 6, the digital-to-analog conversion module 7, and the communication transmission module 8 respectively.

[0060] like Figure 3 As shown, the parting surface opening monitoring device provided in this embodiment further includes a power module 10, and the power module 10 is electrically connected to the test circuit for supplying power to the test circuit.

[0061] The charging and discharging module 6 is used to control the input and output voltage regulation of the power module 10, the digital-to-analog conversion module 7 is used for converting electrical signals and digital signals, the single-chip microcomputer module 9 realizes the automatic control of each module of the test circuit, including start and stop, signal conversion, signal processing and signal transmission, and the communication transmission module 8 is used to output the processed digital signal to the outside and receive external command signals at the same time;

[0062] The external communication transmission module 8 sends a power-on command to the single-chip computer module 9. The single-chip computer module 9 controls the charging and discharging module 6 to complete the power-on preparation of the equipment. At the same time, the collected real-time digital signal is reset to zero. After the preparation is completed, the opening size measurement is started. When the parting surface of the three-row column variable pitch bearing ring opens slightly, the dynamic sensitive resistor 5 will be deformed to produce a voltage signal change. The electrical signal is converted into a real-time digital test signal through the digital-to-analog conversion module 7. The single-chip computer module 9 processes the digital signal according to the set sampling frequency and required accuracy, and then outputs it to the external monitoring end through the communication transmission module 8 to complete the real-time monitoring of the opening size.

[0063] In the parting surface opening monitoring device provided in this embodiment, the power module 10 is arranged inside the second base 3, and the test circuit is arranged inside the first base 1. The test circuit inside the first base 1, the power module 10 inside the second base 3 and the loop are connected in series with the force-sensitive resistor 5 to form a closed loop, without external complex wiring, and the overall structure connection is more compact.

[0064] In addition, as an alternative implementation, the power supply module 10 may not be disposed in the second base 3, and an external power supply may be directly used to supply power to the test circuit.

[0065] like Figure 2As shown, in the parting surface opening monitoring device provided in this embodiment, there are two force-sensitive resistors 5, both of which are connected to the test circuit. The setting of the two force-sensitive resistors 5 connects the test circuit and the power module 10 in series, and all external connections are completed through the force-sensitive resistors 5. The setting of the two force-sensitive resistors 5 further improves the measurement accuracy. In addition, as an alternative embodiment, the force-sensitive resistor 5 can also be set to only one, and the loop connection on the other side is completed through the connecting line.

[0066] like Figure 2 and Figure 4 As shown, the parting surface opening monitoring device provided in this embodiment further includes a fastening component 11, and the first base 1 and the second base 3 are both provided with the fastening component 11, and the fastening component 11 is used to fasten the force sensitive resistor 5. The setting of the fastening component 11 ensures the firmness of the series circuit and avoids affecting the measurement accuracy after being disconnected.

[0067] like Figure 4 and Figure 5 As shown, in the parting surface opening monitoring device provided by the present embodiment, a clamping assembly 12 is provided on both the first base 1 and the second base 3, and the clamping assembly 12 includes a first clamping member 13 and a second clamping member 14 which are arranged opposite to each other; a clamping area 15 is provided between the first clamping member 13 and the second clamping member 14, and an adjustment gap 16 is provided between the first clamping member 13 and the second clamping member 14, one end of the force sensitive resistor 5 is inserted in the clamping area 15, and the fastening assembly 11 is connected to the clamping assembly 12 so that the clamping assembly 12 holds the force sensitive resistor 5 tightly.

[0068] The setting of the adjustment gap 16 ensures that the force-sensitive resistor 5 can be clamped to the maximum extent, further ensures the stability of the clamping, and can adapt to force-sensitive resistors of different specifications. Specifically, arc grooves are relatively arranged in the middle of the first clamping member 13 and the second clamping member 14, and the arc grooves are adapted to the structure of the force-sensitive resistor 5 to avoid the force-sensitive resistor 5 from shaking and shifting during the clamping process, thereby affecting the measurement results.

[0069] In a specific implementation of the clamping assembly 12, the cross-sections of the first clamping member 13 and the second clamping member 14 are arc-shaped structures smaller than a semicircle, and the two clamping members can form a full circle relative to each other. In addition, the cross-sections can also be a square structure.

[0070] like Figure 6As shown, in the parting surface opening monitoring device provided in this embodiment, the fastening assembly 11 includes a first hoop member 17 and a second hoop member 18, the second hoop member 18 is arranged opposite to the first hoop member 17, and the first hoop member 17 and the second hoop member 18 are connected by a connecting member 19 to hold the clamping assembly 12 tightly, thereby clamping the force-sensitive resistor. Specifically, the internal structure between the first hoop member 17 and the second hoop member 18 is adapted to the external structure of the clamping assembly 12, and under the action of the fastening assembly 11, the adjustment gap 16 can be reduced, thereby clamping the force-sensitive resistor 5.

[0071] In a specific implementation of the fastening assembly 11, connecting plates are provided at both ends of the first clamp member 17 and the second clamp member 18, connecting holes are provided on the connecting plates, and the connecting member 19 is a bolt. The first clamp member 17 and the second clamp member 18 are fixed to each other by connecting the connecting plates with the bolts.

[0072] In addition, as an alternative implementation, the clamping assembly 12 may not be provided, and the fastening assembly 11 may be directly used to clamp the force-sensitive resistor 5. At this time, an adjustment gap 16 is provided between the first clamping hoop 17 and the second clamping hoop 18 to ensure the clamping effect of the force-sensitive resistor 5.

[0073] In the parting surface opening monitoring device provided in this embodiment, the first base 1 and the first outer ring 2, and the second base 3 and the second outer ring 4 can be detachably connected. The detachable connection makes the monitoring device reusable, and the specifications of the first base 1 and the second base 3 can be set to standard specifications. Only by setting force-sensitive resistors 5 of different lengths, the parting surface opening of different bearings can be monitored.

[0074] Specifically, Figure 1 and Figure 2 As shown, a magnetic base 24 may be provided at the bottom of the first base 1 and the second base 3 , and connected to the outer ring via the magnetic base 24 .

[0075] In addition, as an alternative implementation, a flange plate may be welded on the outer ring, and the first base 1 and the second base 3 may be bolted to the flange plate; or the first base 1 and the second base 3 may be directly bonded to the outer ring by solid glue.

[0076] This embodiment also provides a three-row column pitch bearing assembly, including a bearing body and a parting surface opening monitoring device as described in any of the above embodiments, the parting surface opening monitoring device has one or more parting surface opening monitoring devices, and the parting surface opening monitoring devices are arranged on the outer ring 20 of the bearing body, and are used to monitor the opening condition of the parting surface 21 of the bearing body.

[0077] Specifically, when there is only one group of parting surface opening monitoring devices, it is arranged at the 12 o'clock direction of the heavy-load area of ​​the bearing to monitor the area most likely to open; when there are multiple groups of parting surface opening monitoring devices, they are preferentially arranged at 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock to monitor the opening distribution trend of the entire circle.

[0078] Working process of the parting surface opening monitoring device:

[0079] Install the first base 1 on the first outer ring 2, and install the second base 3 on the second outer ring 4;

[0080] The external device sends a power-on command to the single-chip microcomputer module 9 through the communication transmission module 8, and the single-chip microcomputer module 9 controls the charge and discharge module 6 to complete the power-on preparation of the device, and at the same time performs a reference zeroing operation on the collected real-time digital signal;

[0081] After the preparation is completed, the opening size measurement is started. When the parting surface of the three-row column pitch bearing ring is slightly opened, the dynamic sensitive resistor 5 is deformed to generate a voltage signal change;

[0082] The electrical signal is converted into a real-time digital test signal by the digital-to-analog conversion module 7. The single-chip microcomputer module 9 processes the digital signal according to the set sampling frequency and required accuracy, and then the communication transmission module 8 outputs the digital signal to the external monitoring terminal to complete the real-time monitoring of the opening size.

[0083] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A parting surface opening monitoring device, characterized in that: include: A first base (1) is used for being mounted on a first outer ring (2) of a three-row column pitch bearing; A second base (3) is used for being mounted on a second outer ring (4) of a three-row column pitch bearing; A test circuit is arranged inside the first base (1) and / or the second base (3); A force-sensitive resistor (5), two ends of which are respectively connected to the first base (1) and the second base (3); the force-sensitive resistor (5) is electrically connected to the test circuit to form a closed loop; and the test circuit is used to monitor the force-sensitive resistor (5).

2. The parting surface opening monitoring device according to claim 1, characterized in that: The test circuit comprises a charge and discharge module (6), a digital-to-analog conversion module (7), a communication transmission module (8) and a single-chip computer module (9); the single-chip computer module (9) is electrically connected to the charge and discharge module (6), the digital-to-analog conversion module (7) and the communication transmission module (8), respectively.

3. The parting surface opening monitoring device according to claim 2, characterized in that: Also includes: A power supply module (10) is electrically connected to the test circuit and is used to supply power to the test circuit.

4. The parting surface opening monitoring device according to claim 3, characterized in that: The power module (10) is arranged inside the second base (3), and the test circuit is arranged inside the first base (1).

5. The parting surface opening monitoring device according to claim 1, characterized in that: The force-sensitive resistors (5) are two and both are connected to the test circuit.

6. The parting surface opening monitoring device according to claim 1, characterized in that: Also includes: A fastening component (11), wherein the first base (1) and the second base (3) are both provided with the fastening component (11), and the fastening component (11) is used for fastening the force-sensitive resistor (5).

7. The parting surface opening monitoring device according to claim 6, characterized in that: The first base (1) and the second base (3) are both provided with a clamping assembly (12), and the clamping assembly (12) comprises a first clamping member (13) and a second clamping member (14) which are arranged opposite to each other; A clamping area (15) is provided between the first clamping member (13) and the second clamping member (14); an adjustment gap (16) is provided between the first clamping member (13) and the second clamping member (14); one end of the force-sensitive resistor (5) is inserted into the clamping area (15); and the fastening component (11) is connected to the clamping component (12) so that the clamping component (12) tightly holds the force-sensitive resistor (5).

8. The parting surface opening monitoring device according to claim 7, characterized in that: The fastening assembly (11) comprises: A first hoop member (17); The second clamping hoop member (18) is arranged opposite to the first clamping hoop member (17), and the first clamping hoop member (17) and the second clamping hoop member (18) are connected via a connecting member (19) to clamp the clamping assembly (12).

9. The parting surface opening monitoring device according to claim 1, characterized in that: The first base (1) and the first outer ring (2), as well as the second base (3) and the second outer ring (4) are both detachably connected.

10. A three-row column pitch bearing assembly, characterized in that: include: Bearing body; The parting surface opening monitoring device described in any one of claims 1 to 9 comprises one or more parting surface opening monitoring devices, which are arranged on the outer ring (20) of the bearing body and are used to monitor the opening condition of the parting surface (21) of the bearing body.

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