Integrated monitoring sensor for sliding bearing

Abstract

The invention discloses an integrated monitoring sensor for a sliding bearing, particularly relates to the technical field of bearing monitoring, and is technically characterized in that the integrated monitoring sensor comprises a shell, an insulator, a first monitoring unit and a second monitoring unit; the insulator is embedded in the top end of the shell, the first monitoring unit and the second monitoring unit are both arranged at the top end of the insulator, the top surface of the first monitoring unit is flush with the top surface of the insulator, and the top surface of the second monitoring unit is lower than the top surface of the insulator; the bottom end of the shell is provided with a first placing channel used for placing a lead, the first placing channel penetrates through the bottom end of the shell and extends to the bottom of the insulator, one end of the lead is connected with the first monitoring unit and the second monitoring unit through the first placing channel, and the other end of the lead is connected with an external signal acquisition device.

Description

Technical Field

[0001] The invention relates to the technical field of bearing monitoring, and in particular to an integrated monitoring sensor for sliding bearings. Background Art

[0002] In the field of sliding bearing monitoring, the lubrication status is used to determine whether the bearing is in a fluid lubrication state, mixed lubrication state or solid lubrication state, thereby ensuring the normal operation of the unit equipment. Therefore, the monitoring of lubrication status parameters is extremely important.

[0003] In the prior art, patent CN214748491U provides a sliding bearing oil film temperature measuring element, which is installed by opening a hole in the highest area of ​​the theoretical dynamic pressure lubricating oil film of the sliding bearing, and can monitor the oil film temperature state of the highest load-bearing area of ​​the sliding bearing; patents CN18010348A and CN18010805A respectively invented a lubrication state identification sensor for elastic metal plastic tiles and polyaryletherketone series composite material bearings, which are embedded in the tile surface material (i.e., holes are opened inside the bearing) to monitor the operating state of the sliding bearing and ensure the safe operation of the unit equipment; patent CN17968507A invented a sliding bearing life prediction sensor, which is made of the same material as the working surface of the sliding bearing, is installed inside the bearing and flush with the working surface of the tile surface, and realizes the life prediction and termination warning of the sliding bearing by monitoring the common wear state between it and the working surface; patent CN17516935A integrates the state identification sensor of the elastic metal plastic tile and the life prediction sensor into a multifunctional sensor.

[0004] However, if you want to monitor multiple operating parameters at the same time, you need to open multiple holes in the bearing surface, which will reduce the bearing area of ​​the bearing surface and increase the risk of bearing operation. At the same time, if installed in different areas, due to slight differences in lubrication conditions, the monitoring results of various parameters will not form a corresponding relationship, affecting the comprehensive and systematic analysis of the bearing operation status.

[0005] Therefore, the present invention aims to provide an integrated monitoring sensor for a sliding bearing to solve the above-mentioned related problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the prior art requires the opening of multiple holes, which leads to a reduction in the bearing area of ​​the bearing surface and an increase in the risk of bearing operation; at the same time, the monitoring results of various parameters do not form a corresponding relationship, which affects the comprehensive and systematic analysis of the bearing operation status. The purpose is to provide an integrated monitoring sensor for sliding bearings. Through the two integrated monitoring sensors provided by the present invention, multiple parameters can be monitored at the same time, and multi-parameter fusion monitoring of the lubrication status at the same position of the sliding bearing is realized, thereby improving the monitoring accuracy, reducing the number of bearing hole positions and improving the safety of bearing operation. It solves the problem that if you want to monitor multiple operating parameters at the same time, you need to open multiple holes in the bearing surface, which leads to a reduction in the bearing area of ​​the bearing surface and an increase in the risk of bearing operation; at the same time, if installed in different areas, due to slight differences in the lubrication status, the monitoring results of various parameters do not form a corresponding relationship, which affects the comprehensive and systematic analysis of the bearing operation status.

[0007] The present invention is achieved through the following technical solutions:

[0008] An integrated monitoring sensor for a sliding bearing, the integrated monitoring sensor comprising a housing, an insulator, a first monitoring unit and a second monitoring unit;

[0009] The insulator is embedded in the top of the shell, the first monitoring unit and the second monitoring unit are both arranged at the top of the insulator, and the top surface of the first monitoring unit is flush with the top surface of the insulator, and the top surface of the second monitoring unit is lower than the top surface of the insulator;

[0010] The bottom end of the shell is provided with a first placement channel for placing a lead, the first placement channel passes through the bottom end of the shell and extends to the bottom of the insulator, one end of the lead is connected to the first monitoring unit and the second monitoring unit via the first placement channel, and the other end of the lead is connected to an external signal acquisition device.

[0011] Furthermore, the first monitoring unit is a life monitoring unit, and the second monitoring unit is an oil film temperature monitoring unit.

[0012] Furthermore, the life monitoring unit includes a life prediction resistance layer and two life prediction conductive cores, a groove for placing the life prediction resistance layer is provided in the middle of the top of the insulator, and two second placement channels are provided at the top of the insulator, one end of the two second placement channels extends to the top surface of the life prediction resistance layer, and the other end of the two second placement channels extends to the top of the first placement channel, the two life prediction conductive cores are respectively placed in the two second placement channels, and the top surfaces of the two life prediction conductive cores are flush with the top surface of the life prediction resistance layer, and the bottom ends of the two life prediction conductive cores are respectively connected to the leads.

[0013] Furthermore, a third placement channel for placing an oil film temperature monitoring unit is provided at the top of the insulator, one end of the third placement channel passes through the life prediction resistance layer and extends to the outside of the top of the insulator, the other end of the third placement channel extends to the top of the first placement channel, one end of the oil film temperature monitoring unit is connected to the lead, and the other end of the oil film temperature monitoring unit is close to the top of the insulator.

[0014] Furthermore, the first monitoring unit is a lubrication state monitoring unit, and the second monitoring unit is an oil film temperature monitoring unit.

[0015] Furthermore, the lubrication state monitoring unit includes two lubrication state monitoring conductive cores, and two second placement channels are provided at the top of the insulator, one end of the two second placement channels extends to the top surface of the insulator, and the other end of the two second placement channels extends to the top of the first placement channel, and the two lubrication state monitoring conductive cores are respectively placed in the two second placement channels, and the top surfaces of the two lubrication state monitoring conductive cores are flush with the top surface of the insulator, and the bottom ends of the two lubrication state monitoring conductive cores are respectively connected to the leads.

[0016] Furthermore, a third placement channel for placing an oil film temperature monitoring unit is provided on the inner side of the insulator, one end of the third placement channel passes through the life prediction resistance layer and extends to the outside of the top end of the insulator, the other end of the third placement channel extends to the top of the first placement channel, one end of the oil film temperature monitoring unit is connected to the lead, and the other end of the oil film temperature monitoring unit is close to the top of the insulator.

[0017] Furthermore, the top surface of the oil film temperature monitoring unit is 0.5 to 2.0 mm lower than the top surface of the insulator.

[0018] Furthermore, the cross-sections of the two second placement channels and the cross-section of the third placement channel are arranged in the shape of an equilateral triangle.

[0019] Furthermore, a connecting piece is provided on the outer side wall of the shell.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] In the present invention, through the two integrated monitoring sensors provided by the present invention, multiple parameters can be monitored at the same time, realizing multi-parameter fusion monitoring of the lubrication status at the same position of the sliding bearing, improving the monitoring accuracy, reducing the number of holes on the bearing surface, and improving the safety of bearing operation. It solves the problem that if you want to monitor multiple operating parameters at the same time, you need to open multiple holes on the bearing surface, which leads to a reduction in the bearing area of ​​the bearing surface and an increase in the risk of bearing operation; at the same time, if installed in different areas, due to slight differences in the lubrication status, the monitoring results of each parameter do not form a corresponding relationship, affecting the comprehensive and systematic analysis of the bearing operation status. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 is a top view of an integrated monitoring sensor for a sliding bearing in Example 1;

[0024] Figure 2 for Figure 1 Sectional view along AA direction;

[0025] Figure 3 for Figure 1 Cross-sectional view along the BB direction;

[0026] Figure 4 is a top view of an integrated monitoring sensor for a sliding bearing in Example 2;

[0027] Figure 5 for Figure 4 Sectional view along AA direction;

[0028] Figure 6 for Figure 4 Cross-sectional view along the BB direction;

[0029] Figure 7 This is a schematic diagram of the installation of an integrated monitoring sensor in a thrust bearing test bench simulating a power station operating condition test in this embodiment;

[0030] Figure 8 This is a schematic diagram of the temperature curve of the bearing block during a test of a power station operating condition simulated by the thrust bearing test bench in this embodiment;

[0031] Fig. 9 This is a schematic diagram of the oil film temperature curve in a thrust bearing test bench simulating a power station operating condition test in this embodiment;

[0032] Fig.10 This is a trend diagram of the overall lubrication force model in a thrust bearing test bench simulating a power station operating condition test in this embodiment;

[0033] Fig.11 This is a schematic diagram of the lubrication state identification curve of the 1# bearing in a power station operating condition test simulated by the thrust bearing test bench in this embodiment;

[0034] Fig.12 This is a schematic diagram of the lubrication state identification curve of the 2# bearing in a power station operating condition test simulated by the thrust bearing test bench in this embodiment;

[0035] Fig.13 This is a schematic diagram of the lubrication state identification curve of the 3# bearing in a power station working condition test simulated by the thrust bearing test bench in this embodiment;

[0036] Fig.14 This is a schematic diagram of the lubrication state identification curve of the 4# bearing in a power station operating condition test simulated by the thrust bearing test bench in this embodiment;

[0037] Fig.15 This is a schematic diagram of the lubrication state identification curve of the 5# bearing in a power station operating condition test simulated by the thrust bearing test bench in this embodiment;

[0038] Fig.16 This is a schematic diagram of the lubrication state identification curve of the 6# bearing in a power station operating condition test simulated by the thrust bearing test bench in this embodiment.

[0039] Marks and corresponding parts names in the attached drawings:

[0040] 1. Shell; 2. Insulator; 3. Life monitoring unit; 301. Life prediction resistor layer; 302. Life prediction conductive core; 4. Oil film temperature monitoring unit; 5. Lead; 6. First placement channel; 7. Groove; 8. Second placement channel; 9. Third placement channel; 10. Lubrication status monitoring unit; 101. Lubrication status monitoring conductive core; 1. Connector. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with examples and drawings. The illustrative implementation scheme of the present application and its description are only used to explain the present application and are not intended to limit the present application.

[0042] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it is apparent to those of ordinary skill in the art that these specific details do not need to be adopted to practice the present application. In other embodiments, in order to avoid confusing the present application, well-known structures, circuits, materials or methods are not specifically described.

[0043] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present application. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] In the description of the present application, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present application.

[0045] As mentioned in the background, if the existing technology wants to monitor multiple operating parameters at the same time, it is necessary to open multiple holes in the bearing surface, which will lead to a reduction in the bearing area of ​​the bearing surface and an increase in the risk of bearing operation; at the same time, if installed in different areas, due to slight differences in lubrication conditions, the monitoring results of various parameters do not form a corresponding relationship, affecting the comprehensive and systematic analysis of the bearing operation status.

[0046] Example 1

[0047] See also Figure 1-Figure 3 As shown, this embodiment provides an integrated monitoring sensor for sliding bearings, which is used for life monitoring and oil film temperature monitoring. The technical solution is as follows: the integrated monitoring sensor includes a housing 1, an insulator 2, a life monitoring unit 3 and an oil film temperature monitoring unit 4;

[0048] The insulator 2 is embedded in the top of the housing 1, and the life monitoring unit 3 and the oil film temperature monitoring unit 4 are both embedded in the top of the insulator 2, and the top surface of the life monitoring unit 3 is flush with the top surface of the insulator 2, and the top surface of the oil film temperature monitoring unit 4 is lower than the top surface of the insulator 2;

[0049] The bottom end of the shell 1 is provided with a first placement channel 6 for placing the lead 5. The first placement channel 6 passes through the bottom end of the shell 1 and extends to the bottom of the insulator 2. One end of the lead 5 is connected to the life monitoring unit 3 and the oil film temperature monitoring unit 4 through the first placement channel 6, and the other end of the lead 5 is connected to an external signal acquisition device.

[0050] It should be noted that, in the present embodiment, the oil film temperature monitoring unit 4 adopts a PT100 temperature sensor, and other types of temperature sensors may also be used in other embodiments, without making too many restrictions here; at the same time, the height of the integrated monitoring sensor is 40-100 mm, and the diameter is 12-20 mm. In the present embodiment, the height is set to 60 mm and the diameter is set to 16 mm, and other height and diameter settings may also be used in other embodiments, without making too many restrictions here; at the same time, in the present embodiment, the integrated monitoring sensor adopts an integrated molding setting; at the same time, in the present embodiment, an external signal acquisition device is used to obtain the data signal output by the integrated monitoring sensor. This technical content is a conventional technical means in this field and will not be elaborated here.

[0051] Furthermore, the life monitoring unit 3 includes a life prediction resistor layer 301 and two life prediction conductive cores 302. A groove 7 for placing the life prediction resistor layer 301 is bored in the middle of the top of the insulator 2, and two second placement channels 8 are bored at the top of the insulator 2. One end of the two second placement channels 8 extends to the top surface of the life prediction resistor layer 301, and the other end of the two second placement channels 8 extends to the top of the first placement channel 6. The two life prediction conductive cores 302 are respectively placed in the two second placement channels 8, and the top surfaces of the two life prediction conductive cores 302 are flush with the top surface of the life prediction resistor layer 301, and the bottom ends of the two life prediction conductive cores 302 are respectively connected to the leads 5.

[0052] It should be noted that, in the present embodiment, the wear amount of the bearing is determined by the wear amount (resistance signal) of the life prediction resistor layer 301, so as to achieve the purpose of predicting the service life of the bearing. This technical means is a conventional technical means and will not be elaborated on here. At the same time, in the present embodiment, the life prediction resistor layer 301 and the two life prediction conductive cores 302 are made of modified polytetrafluoroethylene composite materials or modified polyaryletherketone composite materials. At the same time, the diameter of the two life prediction conductive cores 302 can be 2 to 5 mm. In the present embodiment, the diameter of the two life prediction conductive cores 302 is 3 mm. In other embodiments, other diameter settings can also be used, and no excessive restrictions are made here. At the same time, the top outer walls of the two life prediction conductive cores 302 are connected to the life prediction resistor layer 301.

[0053] Furthermore, a third placement channel 9 for placing the oil film temperature monitoring unit 4 is provided at the top of the insulator 2, one end of the third placement channel 9 passes through the life prediction resistance layer 301 and extends to the outside of the top of the insulator 2, and the other end of the third placement channel 9 extends to the top of the first placement channel 6, one end of the oil film temperature monitoring unit 4 is connected to the lead 5, and the other end of the oil film temperature monitoring unit 4 is close to the top of the insulator 2.

[0054] It should be noted that the diameter of the third placement channel 9 is 2-5 mm, and 3 mm is used in this embodiment. Other diameters may also be used in other embodiments, and no excessive restrictions are made here.

[0055] Furthermore, the top surface of the oil film temperature monitoring unit 4 is 0.5 to 2.0 mm lower than the top surface of the insulator 2 .

[0056] It should be noted that, in the present embodiment, the top surface of the oil film temperature monitoring unit 4 is 0.5 mm lower than the top surface of the insulator 2 . In other embodiments, other heights may be set, and no further restrictions are imposed here.

[0057] Specifically, in this embodiment, by making the top surface of the oil film temperature monitoring unit 4 0.5 to 2.0 mm lower than the top surface of the insulator 2 , it is possible to prevent the temperature sensor from being damaged when friction occurs on the shoe surface.

[0058] Furthermore, the cross-sections of the two second placement channels 8 and the cross-section of the third placement channel 9 are arranged in the shape of an equilateral triangle.

[0059] Specifically, in this embodiment, by arranging the cross-sections of the two second placement channels 8 and the third placement channel 9 in an equilateral triangle, the two life prediction conductive cores 302 can be evenly distributed and worn symmetrically, thereby preventing the accuracy of data collection from being affected by uneven wear.

[0060] Furthermore, a connecting piece 11 is provided on the outer side wall of the housing 1 .

[0061] It should be noted that, in the present embodiment, the connecting member 11 may be connected by threading, and in other embodiments, it may also be bonded, or other connecting members 11 may be used, and no further restrictions are made here.

[0062] Example 2

[0063] See also Figure 4-6 As shown, this embodiment provides an integrated monitoring sensor for sliding bearings, the integrated monitoring sensor is used for lubrication state monitoring and oil film temperature monitoring, and the technical solution is as follows: the integrated monitoring sensor includes a housing 1, an insulator 2, a lubrication state monitoring unit 10 and an oil film temperature monitoring unit 4;

[0064] The insulator 2 is embedded in the top of the housing 1, the lubrication state monitoring unit 10 and the oil film temperature monitoring unit 4 are both embedded in the top of the insulator 2, and the top surface of the lubrication state monitoring unit 10 is flush with the top surface of the insulator 2, and the top surface of the oil film temperature monitoring unit 4 is lower than the top surface of the insulator 2;

[0065] A first placement channel 6 for placing a lead 5 is opened at the bottom of the shell 1. The first placement channel 6 passes through the bottom of the shell 1 and extends to the bottom of the insulator 2. One end of the lead 5 is connected to the lubrication status monitoring unit 10 and the oil film temperature monitoring unit 4 through the first placement channel 6, and the other end of the lead 5 is connected to an external signal acquisition device.

[0066] It should be noted that, in the present embodiment, the oil film temperature monitoring unit 4 adopts a PT100 temperature sensor, and in other embodiments, other types of temperature sensors may also be used, without making too many restrictions here; at the same time, the height of the integrated monitoring sensor is 40-100 mm, and the diameter is 12-20 mm. In the present embodiment, the height is set to 80 mm and the diameter is set to 18 mm. In other embodiments, other height and diameter settings may also be used, without making too many restrictions here; at the same time, in the present embodiment, the integrated monitoring sensor is assembled by first manufacturing the insulator 2 and the conductive core separately, and then interferingly assembling them together after machining; at the same time, in the present embodiment, an external signal acquisition device is used to obtain the data signal output by the integrated monitoring sensor. This technical content is a conventional technical means in the field and will not be described in detail here.

[0067] Furthermore, the lubrication state monitoring unit 10 includes two lubrication state monitoring conductive cores 101, and two second placement channels 8 are provided at the top of the insulator 2, one end of the two second placement channels 8 extends to the top surface of the insulator 2, and the other end of the two second placement channels 8 extends to the top of the first placement channel 6, and the two lubrication state monitoring conductive cores 101 are respectively placed in the two second placement channels 8, and the top surfaces of the two lubrication state monitoring conductive cores 101 are flush with the top surface of the insulator 2, and the bottom ends of the two lubrication state monitoring conductive cores 101 are respectively connected to the leads 5.

[0068] It should be noted that, in the present embodiment, the resistance signal of the lubrication state monitoring conductive core 101 is used to determine whether boundary lubrication occurs in the bearing shell, thereby achieving the purpose of lubrication state identification. This technical means is a conventional technical means and will not be elaborated on here. At the same time, in the present embodiment, the lubrication state monitoring conductive core 101 adopts a modified polytetrafluoroethylene composite material or a modified polyaryletherketone composite material. At the same time, the diameter of the two lubrication state monitoring conductive cores 101 can be 2 to 5 mm. In the present embodiment, the diameter of the two life prediction conductive cores 302 is 2 mm. In other embodiments, other diameter settings may also be used, and no excessive restrictions are made here.

[0069] Furthermore, a third placement channel 9 for placing the oil film temperature monitoring unit 4 is provided on the inner side of the insulator 2, one end of the third placement channel 9 passes through the life prediction resistance layer 301 and extends to the outside of the top end of the insulator 2, and the other end of the third placement channel 9 extends to the top of the first placement channel 6, one end of the oil film temperature monitoring unit 4 is connected to the lead 5, and the other end of the oil film temperature monitoring unit 4 is close to the top end of the insulator 2.

[0070] It should be noted that the diameter of the third placement channel 9 is 2-5 mm. In this embodiment, 2 mm is used. In other embodiments, other diameter settings may also be used, and no excessive restrictions are made here.

[0071] Furthermore, the top surface of the oil film temperature monitoring unit 4 is 0.5 to 2.0 mm lower than the top surface of the insulator 2 .

[0072] It should be noted that, in the present embodiment, the top surface of the oil film temperature monitoring unit 4 is 0.5 mm lower than the top surface of the insulator 2 . In other embodiments, other heights may be set, and no further restrictions are imposed here.

[0073] Specifically, in this embodiment, by making the top surface of the oil film temperature monitoring unit 4 0.5 to 2.0 mm lower than the top surface of the insulator 2 , it is possible to prevent the temperature sensor from being damaged when friction occurs on the shoe surface.

[0074] Furthermore, the cross-sections of the two second placement channels 8 and the cross-section of the third placement channel 9 are arranged in the shape of an equilateral triangle.

[0075] Specifically, in this embodiment, by arranging the cross-sections of the two second placement channels 8 and the third placement channel 9 in an equilateral triangle, the two life prediction conductive cores 302 can be evenly distributed and worn symmetrically, thereby preventing the accuracy of data collection from being affected by uneven wear.

[0076] Furthermore, a connecting piece 11 is fixedly mounted on the outer side wall of the housing 1 .

[0077] It should be noted that, in the present embodiment, the connecting member 11 may be connected by threading, and in other embodiments, it may also be bonded, or other connecting members 11 may be used, and no further restrictions are made here.

[0078] It should be noted that the integrated monitoring sensors provided in Example 1 and Example 2 can be used simultaneously or individually on a sliding bearing, and can be distributed continuously, at intervals, or symmetrically on the entire set of bearings (in order to better monitor the lubrication status of the entire set of bearings).

[0079] In order to verify the beneficial effects of the integrated monitoring sensors provided in Example 1 and Example 2, a comparative experiment was conducted between the two integrated monitoring sensors of the present invention and an independent sensor, as follows:

[0080] The comparison of different types of sensors installed on the same type of bearing surface is shown in the following table. It can be seen from the installation data in the table that under the condition of multi-parameter monitoring, the use of integrated sensors can reduce the number of bearing surface openings and the bearing area, reduce the risk of bearing operation, and reduce costs;

[0081]

[0082] Note: ※ The more you buy, the higher the cost

[0083] Also, see Figure 7 As shown, a thrust bearing test bench was also tested to simulate the working conditions of a power station - the temperature of the bearing body was raised from 40℃ to 80℃. Six FZB3G thrust bearings / sets were prepared for the test; 245cm 2 / piece; each tile is equipped with tile body temperature and oil inlet temperature, and the oil tank temperature sensor is installed in the oil tank; 1#, 2#, 3# tiles are integrated sensors for oil film temperature and state recognition; 4#, 5#, 6# tiles are oil film temperature sensors, state recognition sensors, and life prediction sensors;

[0084] Simulate the working condition of a power station to perform a step-by-step loading test: at rated speed and rated load, the temperature of the tile body rises from 40℃ to 80℃, with each 5℃ step being a level, and each level running stably for 30 minutes. The results are as follows Figure 8-Figure 10 As shown in the figure, in the stable operation of each stage, the temperature difference of the bearing body of the whole set of bearings is less than 3℃, indicating that the bearing is operating normally. Figure 8-Figure 10 It can be seen that the individual oil film temperatures of 1#~3# tend to be consistent, and the integrated oil film temperatures of 4#~6# tend to be consistent. Both monitoring are good. Due to the different contact areas of the sensors, the difference in the monitoring values ​​of the two is normal. Both are reliable. At the same time, see Figure 11-Figure 16 As shown, during operation, the state identification parameters of 1#~6# are all > 1*10 5 Ω indicates that the bearing is in a fluid lubrication state as a whole.

[0085] It can be seen from the above experimental results that by installing integrated sensors on some bearings, the operating status and lubrication status of the entire set of bearings can be analyzed and judged. At the same time, the number of holes opened on the elastic metal plastic bearing is changed from 2-3 to 1, which can improve the performance and safety of the thrust bearing while reducing costs.

[0086] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated monitoring sensor for a sliding bearing, characterized in that: The integrated monitoring sensor comprises a housing (1), an insulator (2), a first monitoring unit and a second monitoring unit; The insulator (2) is embedded in the top of the shell (1), the first monitoring unit and the second monitoring unit are both arranged at the top of the insulator (2), and the top surface of the first monitoring unit is flush with the top surface of the insulator (2), and the top surface of the second monitoring unit is lower than the top surface of the insulator (2); The bottom end of the shell (1) is provided with a first placement channel (6) for placing a lead wire (5); the first placement channel (6) passes through the bottom end of the shell (1) and extends to the bottom of the insulator (2); one end of the lead wire (5) is connected to the first monitoring unit and the second monitoring unit via the first placement channel (6); the other end of the lead wire (5) is connected to an external signal acquisition device.

2. An integrated monitoring sensor for sliding bearings according to claim 1, characterized in that: The first monitoring unit is a life monitoring unit (3), and the second monitoring unit is an oil film temperature monitoring unit (4).

3. An integrated monitoring sensor for sliding bearings according to claim 2, characterized in that: The life monitoring unit (3) comprises a life prediction resistor layer (301) and two life prediction conductive cores (302); a groove (7) for placing the life prediction resistor layer (301) is provided at the middle of the top of the insulator (2); and two second placement channels (8) are provided at the top of the insulator (2); one end of the two second placement channels (8) extends to the top surface of the life prediction resistor layer (301); the other end of the two second placement channels (8) extends to the top of the first placement channel (6); the two life prediction conductive cores (302) are respectively placed in the two second placement channels (8); the top surfaces of the two life prediction conductive cores (302) are flush with the top surface of the life prediction resistor layer (301); and the bottom ends of the two life prediction conductive cores (302) are respectively connected to the leads (5).

4. The integrated monitoring sensor for sliding bearings according to claim 3, characterized in that: A third placement channel (9) for placing an oil film temperature monitoring unit (4) is provided at the top of the insulator (2); one end of the third placement channel (9) penetrates the life prediction resistor layer (301) and extends to the outside of the top of the insulator (2); the other end of the third placement channel (9) extends to the top of the first placement channel (6); one end of the oil film temperature monitoring unit (4) is connected to a lead wire (5); and the other end of the oil film temperature monitoring unit (4) is close to the top of the insulator (2).

5. The integrated monitoring sensor for sliding bearings according to claim 1, characterized in that: The first monitoring unit is a lubrication state monitoring unit (10), and the second monitoring unit is an oil film temperature monitoring unit (4).

6. An integrated monitoring sensor for sliding bearings according to claim 5, characterized in that: The lubrication state monitoring unit (10) comprises two lubrication state monitoring conductive cores (101); two second placement channels (8) are provided at the top of the insulator (2); one end of the two second placement channels (8) extends to the top surface of the insulator (2); the other end of the two second placement channels (8) extends to the top of the first placement channel (6); the two lubrication state monitoring conductive cores (101) are respectively placed in the two second placement channels (8); the top surfaces of the two lubrication state monitoring conductive cores (101) are flush with the top surface of the insulator (2); and the bottom ends of the two lubrication state monitoring conductive cores (101) are respectively connected to the lead wires (5).

7. An integrated monitoring sensor for sliding bearings according to claim 6, characterized in that: A third placement channel (9) for placing an oil film temperature monitoring unit (4) is provided on the inner side of the insulator (2); one end of the third placement channel (9) penetrates the life prediction resistor layer (301) and extends to the outside of the top end of the insulator (2); the other end of the third placement channel (9) extends to the top of the first placement channel (6); one end of the oil film temperature monitoring unit (4) is connected to a lead wire (5); and the other end of the oil film temperature monitoring unit (4) is close to the top end of the insulator (2).

8. An integrated monitoring sensor for sliding bearings according to any one of claims 2 to 7, characterized in that: The top surface of the oil film temperature monitoring unit (4) is 0.5 to 2.0 mm lower than the top surface of the insulator (2).

9. An integrated monitoring sensor for sliding bearings according to claim 4 or 7, characterized in that: The cross sections of the two second placement channels (8) and the cross section of the third placement channel (9) are arranged in the shape of an equilateral triangle.

10. An integrated monitoring sensor for sliding bearings according to any one of claims 1 to 7, characterized in that: The outer side wall of the shell (1) is provided with a connecting piece (1).

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