Intelligent bearing self-powered device

Abstract

The invention discloses an intelligent bearing self-powered device, and relates to the technical field of bearings, a stator is coaxially connected with a bearing body, and the peripheral side of the stator is connected with a plurality of mounting blocks; each mounting block is at least provided with two first friction parts, and the first friction parts located on the outer circumferential side are close to the bearing body step by step towards the first friction parts located on the inner circumferential side; a plurality of electrode rings are arranged on the bearing end cover, each electrode ring is coaxially connected with a second friction part, and the second friction parts located on the outer circumferential side are close to the bearing body step by step towards the second friction parts located on the inner circumferential side; when the mounting block is not popped up, each first friction part is in contact with the corresponding second friction part, and when the mounting block is popped up, at least one first friction part on the mounting block is opposite to and close to the corresponding second friction part; the voltage stabilizing and rectifying mechanism is used for conducting the outer ring electrode and the inner ring electrode on the same electrode ring, non-contact self-power generation is achieved, and the problem that the service life is shortened due to frequent mechanical friction of a friction layer interface is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and particularly to an intelligent bearing self-power supply device. Background Art

[0002] As a core supporting component of a mechanical transmission system, the service performance of a rolling bearing directly determines the operation reliability of major equipment. Research by the American National Equipment Maintenance Association shows that the annual unplanned downtime losses caused by sudden bearing failures in the industrial field exceed $4.7 billion. This highlights the engineering urgency of constructing a bearing full-life cycle condition monitoring system.

[0003] Intelligent bearings provide an innovative path for realizing equipment health management by integrating sensing, power supply, and decision-making units. To overcome the limitations brought by traditional power supplies, the academic community has proposed micro-energy self-supply technologies based on mechanical energy capture, mainly including electromagnetic, piezoelectric, and triboelectric types. However, due to long-term direct contact friction, the friction materials of traditional triboelectric nanogenerators are worn out relatively quickly, resulting in a short structural life and severely restricting their engineering practicability. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent bearing self-power supply device to solve the problems existing in the above-mentioned prior art, which can achieve non-contact self-power generation, automatically switch the power generation mode according to the rotational speed, avoid the problem of shortened life caused by frequent mechanical friction at the friction layer interface, and will not damage the complete structure of the bearing.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides an intelligent bearing self-power supply device, including a bearing body, a bearing end cover located at one end of the bearing body, and a self-power supply component installed between the bearing body and the bearing end cover;

[0006] The self-power supply component includes a stator, a mounting block, a first friction part, a second friction part, an electrode ring, and a voltage stabilization and rectification mechanism; the stator has an annular structure and is coaxially connected to the bearing body and rotates synchronously with the bearing body. A plurality of mounting blocks that can pop out towards the outer peripheral side are connected to the outer peripheral side of the stator; at least two of the first friction parts are installed on each of the mounting blocks. The first friction parts on each mounting block are arranged in a radial dislocation along the bearing body, and the first friction part on the outer peripheral side gradually approaches the bearing body towards the first friction part on the inner peripheral side;

[0007] A plurality of the electrode rings are provided on the bearing end cover. The number of the electrode rings is the same as that of the first friction portions on the same mounting block. Each of the electrode rings includes an outer ring electrode and an inner ring electrode. The outer ring electrode coaxially surrounds the outer peripheral side of the inner ring electrode. Each of the electrode rings is provided with a second friction portion on the side close to the bearing body. The second friction portion is in an annular structure and is coaxially distributed with the electrode ring. The second friction portions are all connected to the corresponding outer ring electrodes and inner ring electrodes, and the second friction portion on the outer peripheral side gradually approaches the bearing body toward the second friction portion on the inner peripheral side;

[0008] When the mounting block is not ejected, each of the first friction portions is in contact with the corresponding second friction portion respectively. When the mounting block is ejected, at least one of the first friction portions on the mounting block is disposed opposite to and close to the corresponding second friction portion;

[0009] The voltage stabilizing and rectifying mechanism is used to conduct the outer ring electrode and the inner ring electrode on the same electrode ring.

[0010] Preferably, the stator is coaxially connected to the inner ring of the bearing body and rotates synchronously with the inner ring, and the inner hole structure of the stator is not smaller than the inner hole structure of the inner ring.

[0011] Preferably, there is an installation interval for the stator and the mounting block to move between the bearing end cover and the bearing body. The bearing end cover is provided with an annular connecting portion surrounding the outer peripheral side of the installation interval. The annular connecting portion is used to connect the outer ring of the bearing body or connect the bearing seat for installing the bearing body.

[0012] Preferably, an elastic structure capable of expanding and contracting along the radial direction of the stator is connected between each of the mounting blocks and the outer peripheral wall of the stator.

[0013] Preferably, the first friction portion is made of polytetrafluoroethylene material, the second friction portion is made of nylon material, or the second friction portion is made of polytetrafluoroethylene material and the first friction portion is made of nylon material.

[0014] Preferably, a sensor for collecting the multi-physical quantity state signal is provided on the bearing body.

[0015] Preferably, the sensor is electrically connected to the power output end of the voltage stabilizing and rectifying mechanism.

[0016] Preferably, the sensor is installed on the outer ring of the bearing body.

[0017] Preferably, the voltage stabilizing and rectifying mechanism is installed on the side of the bearing end cover facing away from the bearing body, and a first through hole penetrating along the axis of the bearing end cover is provided on the bearing end cover. A wire located in the first through hole is electrically connected between the voltage stabilizing and rectifying mechanism and the electrode ring.

[0018] Preferably, two first friction portions are installed on each of the mounting blocks. The first friction portion located on the outer peripheral side of the mounting block is away from the bearing body along the axis direction of the bearing body, and the first friction portion located on the inner peripheral side of the mounting block is close to the bearing body along the axis direction of the bearing body;

[0019] Two electrode rings are provided on the bearing end cover. A second friction portion in a ring structure is coaxially connected to each of the electrode rings. The second friction portion located on the outer peripheral side of the bearing end cover is away from the bearing body along the axis direction of the bearing body, and the second friction portion located on the inner peripheral side of the bearing end cover is close to the bearing body along the axis direction of the bearing body;

[0020] When the mounting block does not pop out, the two first friction portions are respectively in contact with the corresponding two second friction portions. When the mounting block pops out, the first friction portion located on the inner peripheral side of the mounting block and the second friction portion located on the outer peripheral side of the bearing end cover are arranged opposite to and close to each other.

[0021] The present invention has achieved the following technical effects compared with the prior art:

[0022] In the intelligent bearing self-power supply device disclosed by the present invention, when the bearing body rotates at a low speed, each first friction portion and each second friction portion directly contact and generate electricity by friction. When rotating at a high speed, due to the action of centrifugal force, the mounting block pops open towards the outer peripheral side of the bearing body, and the first friction portion is separated from the corresponding second friction portion. Since at least one group of corresponding first friction portion and second friction portion are arranged opposite to and close to each other, current is generated only through electrostatic induction. The structure of the present invention is simple, and the non-contact first friction portion and second friction portion are used for inductive power supply, that is, a non-contact triboelectric nanogenerator is formed, realizing automatic switching to the power generation mode according to the rotation speed, avoiding the shortening of the service life caused by the frequent mechanical friction of the friction layer interface between the first friction portion and the second friction portion, and avoiding damaging the complete structure of the bearing. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Exploded view schematic of part of the self-powered device for intelligent bearings disclosed in the present invention Figure 1 ;

[0025] Figure 2 Exploded view schematic of part of the self-powered device for intelligent bearings disclosed in the present invention Figure 2 ;

[0026] Figure 3 Overall exploded view schematic of the self-powered device for intelligent bearings disclosed in the present invention Figure 2 ;

[0027] Figure 4 Combined schematic of the bearing end cover and the second friction part disclosed in the present invention;

[0028] Figure 5 Combined schematic of the mounting block and the stator disclosed in the present invention;

[0029] Figure 6 Schematic of the bearing end cover disclosed in the present invention;

[0030] Figure 7 Partial cross-sectional view of the self-powered device for intelligent bearings disclosed in the present invention at low rotational speeds;

[0031] Figure 8 Partial cross-sectional view of the self-powered device for intelligent bearings disclosed in the present invention at high rotational speeds;

[0032] Figure 9 Principle diagram based on which the self-powered device for intelligent bearings disclosed in the present invention generates electricity;

[0033] Among them, 1 - bearing housing, 2 - bearing body, 3 - inner ring, 4 - outer ring, 5 - mounting block, 6 - bearing end cover, 7 - first friction part, 8 - stator, 9 - second friction part, 10 - electrode ring, 11 - outer ring electrode, 12 - inner ring electrode, 13 - spring, 14 - second through hole, 15 - circuit board, 16 - first through hole, 17 - sensor, 18 - voltage stabilizing and rectifying mechanism. Specific implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The object of the present invention is to provide an intelligent bearing self-power supply device to solve the problems existing in the above-mentioned prior art, which can achieve non-contact self-power generation, automatically switch the power generation mode according to the rotational speed, avoid the problem of shortened service life caused by frequent mechanical friction at the friction layer interface, and will not damage the complete structure of the bearing.

[0036] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Such as Figures 1 to 9As shown in the figure, this embodiment provides an intelligent bearing self-power supply device, which includes a bearing body 2, a bearing end cover 6 located at one end of the bearing body 2, and a self-power supply component installed between the bearing body 2 and the bearing end cover 6; the self-power supply component includes a stator 8, a mounting block 5, a first friction part 7, a second friction part 9, an electrode ring 10, and a voltage stabilization and rectification mechanism 18; the stator 8 is in a ring structure and is coaxially connected to the bearing body 2, and rotates synchronously with the bearing body 2. A plurality of mounting blocks 5 that can pop out towards the outer peripheral side are connected to the outer peripheral side of the stator 8; at least two first friction parts 7 are installed on each mounting block 5. The first friction parts 7 on the mounting block 5 are arranged in a staggered manner along the radial direction of the bearing body 2, and the first friction part 7 on the outer peripheral side gradually approaches the bearing body 2 towards the first friction part 7 on the inner peripheral side; a plurality of electrode rings 10 are provided on the bearing end cover 6. Preferably, the electrode ring 10 adopts a metal interdigital electrode ring 10. The number of electrode rings 10 is the same as the number of first friction parts 7 on the same mounting block 5. Each electrode ring 10 includes an outer ring electrode 11 and an inner ring electrode 12. The outer ring electrode 11 coaxially surrounds the outer peripheral side of the inner ring electrode 12. Each electrode ring 10 is equipped with a second friction part 9 on the side close to the bearing body 2. The second friction part 9 is in a ring structure and is coaxially distributed with the electrode ring 10. The second friction parts 9 are all connected to the corresponding outer ring electrode 11 and inner ring electrode 12, and the second friction part 9 on the outer peripheral side gradually approaches the bearing body 2 towards the second friction part 9 on the inner peripheral side; when the mounting block 5 does not pop out, each first friction part 7 is in contact with the corresponding second friction part 9 respectively. When the mounting block 5 pops out, at least one first friction part 7 on the mounting block 5 is arranged opposite to and close to the corresponding second friction part 9; the voltage stabilization and rectification mechanism 18 is used to conduct the outer ring electrode 11 and the inner ring electrode 12 on the same electrode ring 10, and is used to collect the electric energy generated by electrostatic induction between the first friction part 7 and the second friction part 9; preferably, a circuit board 15 is provided on the bearing end cover 6. The voltage stabilization and rectification mechanism 18 is arranged on the circuit board 15 and is electrically connected to the circuit board 15. The outer ring electrode 11 and the inner ring electrode 12 on the same electrode ring 10 are conducted through the contacts on the circuit board 15, and the voltage stabilization and rectification mechanism 18 can output a stable voltage and current to other mechanisms through the circuit board 15. In the intelligent bearing self-power supply device disclosed in the present invention, when the bearing body 2 rotates at a low speed, each first friction part 7 and each second friction part 9 are in direct contact and friction, so as to be pre-charged, so that some static charges are pre-stored on the surfaces of the first friction part 7 and the second friction part 9. When rotating at a high speed, due to the action of centrifugal force, the mounting block 5 pops open towards the outer peripheral side of the bearing body 2, and the first friction part 7 is separated from the corresponding second friction part 9. Since at least one group of corresponding first friction part 7 and second friction part 9 are arranged opposite to and close to each other, the current is generated only by electrostatic induction.The structure of the present invention is simple. It uses the non-contact first friction part 7 and second friction part 9 for inductive power supply, that is, a non-contact triboelectric nanogenerator is formed, which can automatically switch to the power generation mode according to the rotation speed, avoiding the shortening of the service life caused by the frequent mechanical friction at the friction layer interface between the first friction part 7 and the second friction part 9, and avoiding damage to the complete structure of the bearing.

[0038] In this embodiment, three first friction parts 7 can also be provided on the mounting block 5. Correspondingly, three electrode rings 10 are provided on the bearing end cover 6, and second friction parts 9 are provided on each electrode ring 10. When the mounting block 5 pops open, either one set of the first friction part 7 and the second friction part 9 are directly opposite and close to each other to generate electrostatic induction, or two sets of the first friction part 7 and the second friction part 9 are directly opposite and close to each other to generate electrostatic induction. Four first friction parts 7 can also be provided on the mounting block 5. Correspondingly, four electrode rings 10 are provided on the bearing end cover 6, and second friction parts 9 are provided on each electrode ring 10. When the mounting block 5 pops open, one set, two sets or three sets of the first friction part 7 and the second friction part 9 can be directly opposite and close to each other. And so on. Preferably, two first friction parts 7 are installed on each mounting block 5. The first friction part 7 on the outer peripheral side of the mounting block 5 is away from the bearing body 2 along the axis direction of the bearing body 2, and the first friction part 7 on the inner peripheral side of the mounting block 5 is close to the bearing body 2 along the axis direction of the bearing body 2. Two electrode rings 10 are provided on the bearing end cover 6, and a second friction part 9 in a ring structure is coaxially connected to each electrode ring 10. The second friction part 9 on the outer peripheral side of the bearing end cover 6 is away from the bearing body 2 along the axis direction of the bearing body 2, and the second friction part 9 on the inner peripheral side of the bearing end cover 6 is close to the bearing body 2 along the axis direction of the bearing body 2. When the mounting block 5 does not pop out, the two first friction parts 7 are respectively in contact with the corresponding two second friction parts 9. When the mounting block 5 pops out, the first friction part 7 on the inner peripheral side of the mounting block 5 is directly opposite and close to the second friction part 9 on the outer peripheral side of the bearing end cover 6.

[0039] In this embodiment, the second friction part 9 can be a whole-ring structure or a multi-segment structure. Each segment of the second friction part 9 is equally spaced along the circumferential direction. The first friction part 7 and the second friction part 9 are arc-shaped structures with exactly the same size but different materials.

[0040] It should be noted that the power generation principle of the present invention is based on the triboelectric nanogenerator, such as Figure 9As shown, both the outer ring electrode 11 and the inner ring electrode 12 are connected to the second friction part 9. The first friction part 7 is located on the side of the second friction part 9 away from the outer ring electrode 11 and the inner ring electrode 12. By changing the friction position between the first friction part 7 and the second friction part 9, a potential difference is generated between the outer ring electrode 11 and the inner ring electrode 12, enabling power generation. Further, based on the principle of triboelectrification and electrostatic induction coupling, under the drive of an external force, two materials with different electronegativities, namely, the first friction part 7 and the second friction part 9, generate equal amounts of positive and negative static charges on their surfaces after contact. When the surfaces of the materials separate from each other, the positive and negative charges also separate, generating an induced potential difference between the electrodes. By connecting an external circuit between the electrodes, the induced potential difference drives electrons to flow between the electrodes through the external circuit, thereby generating electrical energy output.

[0041] In a specific embodiment, the stator 8 is coaxially connected to the inner ring 3 of the bearing body 2 and rotates synchronously with the inner ring 3. Moreover, the inner hole structure of the stator 8 is not smaller than that of the inner ring 3. Here, the inner ring 3 serves as the rotating part to drive the stator 8 to rotate synchronously with the inner ring 3. Then, at low speeds, the stator 8 can drive the mounting block 5 to rotate synchronously, enabling the first friction part 7 on the mounting block 5 to make rotational frictional contact with the second friction part 9 on the bearing end cover 6. At low rotational speeds, the first friction part 7 and the second friction part 9 undergo rotational friction, thereby pre-charging and pre-storing some static charges on the friction layer surfaces of the first friction part 7 and the second friction part 9.

[0042] In another preferred embodiment, the stator 8 is coaxially connected to the outer ring 4 of the bearing body 2 and rotates synchronously with the outer ring 4. Here, the outer ring 4 serves as the rotating part to drive the stator 8 to rotate synchronously with the outer ring 4, and further drive the mounting block 5 and the first friction part 7 to rotate synchronously, achieving rotational frictional contact with the second friction part 9.

[0043] In a specific embodiment, there is an installation gap between the bearing end cover 6 and the bearing body 2 for the stator 8 and the mounting block 5 to move. The bearing end cover 6 is provided with an annular connecting part surrounding the outer peripheral side of the installation gap. The annular connecting part is used to connect the outer ring 4 of the bearing body 2 or the bearing seat 1 for installing the bearing body 2. Preferably, the annular connecting part is divided into a first connecting part and a second connecting part along its radial direction. The outer ring 4 is fitted on the bearing seat 1. The first connecting part is detachably connected to the end face of the bearing seat 1 by bolts. The second connecting part is located on the inner peripheral side of the first connecting part and is fitted on the inner ring 3 of the bearing seat 1 and abuts against the end face of the outer ring 4. Through the second connecting part, when the mounting block 5 pops out, it can be limited to prevent excessive popping out.

[0044] In a specific embodiment, an elastic structure capable of radially expanding and contracting along the stator 8 is connected between each mounting block 5 and the outer peripheral wall of the stator 8. Specifically, when the stator 8 rotates at a low speed, the mounting block 5 is driven to rotate synchronously by the elastic structure. When the stator 8 rotates at a high speed, due to the action of centrifugal force, the mounting block 5 moves toward the outer peripheral side and stretches the elastic structure, so that the first friction portion 7 on the mounting block 5 and the second friction portion 9 on the bearing end cover 6 are no longer in contact. At this time, the current is only generated by electrostatic induction. A preferred elastic structure can be a spring 13 or the like. In some other specific embodiments, a sliding track is installed on the outer peripheral wall of the stator 8. The sliding track extends along the radial direction of the stator 8. The mounting block 5 is slidably installed on the sliding track, and an elastic component is provided at a position where the mounting block 5 faces away from the stator 8, so that the mounting block 5 can be pushed to reset at a low speed.

[0045] In a specific embodiment, the first friction portion 7 is made of polytetrafluoroethylene material, the second friction portion 9 is made of nylon material, or the second friction portion 9 is made of polytetrafluoroethylene material and the first friction portion 7 is made of nylon material. Using the principle that charge is generated by the frictional contact between polytetrafluoroethylene material and nylon material, it is ensured that sufficient charge can be generated at a low speed.

[0046] In a specific embodiment, a sensor 17 for collecting multi-physical quantity state signals of the bearing body 2 is provided. Among them, a signal processing and transmission mechanism is installed on the circuit board 15. The signal processing and transmission mechanism is electrically connected to the sensor 17 and is used to receive the signals collected by the sensor 17 and wirelessly transmit them to the upper computer after processing.

[0047] In this embodiment, the sensor 17 is electrically connected to the power output end of the voltage stabilization and rectification mechanism 18. After the voltage stabilization and rectification mechanism 18 collects the corresponding electric energy, it can output stable voltage and current to the sensor 17, realizing the self-power supply of the entire bearing body 2 and fully reducing the energy consumption.

[0048] In this embodiment, the sensor 17 is mounted on the inner ring 3 of the bearing body 2, and is coaxially connected with the outer ring 4 of the bearing body 2 in combination with the stator 8. The stator 8 rotates synchronously with the outer ring 4, wherein the outer ring 4 is used as a rotating part, and the stator 8 rotates synchronously with the outer ring 4, and then the mounting block 5 rotates synchronously with the first friction part 7, so as to realize the embodiment of the rotational friction contact with the second friction part 9. As another embodiment, the inner ring 3 of the bearing body 2 rotates synchronously with the stator 8, and the outer ring 4 of the bearing body 2 is in a stationary state. The sensor 17 is mounted on the outer ring 4 of the bearing body 2, so as to be able to collect the multi-physical quantity state signals of the bearing body 2 in real time and stably; in the embodiment in which the sensor 17 is mounted on the outer ring 4 of the bearing body 2, the bearing end cover 6 is provided with an annular connecting portion surrounding the outer peripheral side of the mounting interval, the annular connecting portion is used to connect the outer ring 4 of the bearing body 2, and there is a gap between the annular connecting portion and the bearing seat 1 for connecting and mounting the sensor 17. A second through hole 14 is formed on the bearing end cover 6 , through which a built-in wire is inserted to connect a sensor 17 with a voltage stabilizing and rectifying mechanism 18 outside the bearing end cover 6 .

[0049] In a specific embodiment, the voltage stabilizing and rectifying mechanism 18 is installed on the side of the bearing end cover 6 away from the bearing body 2, and the bearing end cover 6 is provided with a first through hole 16 penetrating along its axial direction, and the voltage stabilizing and rectifying mechanism 18 and the electrode ring 10 are electrically connected via a wire located in the first through hole 16, so as to electrically connect the electrode ring 10 and the voltage stabilizing and rectifying mechanism 18 through the wire.

[0050] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0051] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0052] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An intelligent bearing self-powered device, characterized in that, It includes a bearing body, a bearing end cover located at one end of the bearing body, and a self-powered component installed between the bearing body and the bearing end cover; The self-powered component includes a stator, a mounting block, a first friction part, a second friction part, an electrode ring, and a voltage stabilization and rectification mechanism; the stator is in a ring structure and is coaxially connected to the bearing body and rotates synchronously with the bearing body. A plurality of the mounting blocks that can pop out towards the outer peripheral side are connected to the outer peripheral side of the stator; at least two of the first friction parts are installed on each of the mounting blocks. The first friction parts on each of the mounting blocks are arranged in a staggered manner along the radial direction of the bearing body, and the first friction part on the outer peripheral side gradually approaches the bearing body towards the first friction part on the inner peripheral side; A plurality of the electrode rings are provided on the bearing end cover. The number of the electrode rings is the same as the number of the first friction parts on the same mounting block. Each of the electrode rings includes an outer ring electrode and an inner ring electrode. The outer ring electrode coaxially surrounds the outer peripheral side of the inner ring electrode. A second friction part is provided on the side of each of the electrode rings close to the bearing body. The second friction part is in a ring structure and is coaxially distributed with the electrode ring. The second friction parts are all connected to the corresponding outer ring electrode and inner ring electrode, and the second friction part on the outer peripheral side gradually approaches the bearing body towards the second friction part on the inner peripheral side; When the mounting block does not pop out, each of the first friction parts is in contact with the corresponding second friction part respectively. When the mounting block pops out, at least one of the first friction parts on the mounting block is arranged opposite to and close to the corresponding second friction part; The voltage stabilization and rectification mechanism is used to conduct the outer ring electrode and the inner ring electrode on the same electrode ring.

2. The intelligent bearing self-powered device according to claim 1, characterized in that The stator is coaxially connected to the inner ring of the bearing body and rotates synchronously with the inner ring, and the inner hole structure of the stator is not smaller than the inner hole structure of the inner ring.

3. The intelligent bearing self-powered device according to claim 2, wherein An installation interval for the stator and the mounting block to act is provided between the bearing end cover and the bearing body. A ring-shaped connecting part surrounding the outer peripheral side of the installation interval is provided on the bearing end cover. The ring-shaped connecting part is used to connect the outer ring of the bearing body or the bearing seat for installing the bearing body.

4. The intelligent bearing self-powered device according to claim 2, characterized in that An elastic structure that can expand and contract along the radial direction of the stator is connected between each of the mounting blocks and the outer peripheral wall of the stator.

5. The self-powered device for intelligent bearings according to claim 1, characterized in that The first friction part is made of polytetrafluoroethylene material, the second friction part is made of nylon material, or the second friction part is made of polytetrafluoroethylene material and the first friction part is made of nylon material.

6. The self-powered device for intelligent bearings according to claim 1, characterized in that, A sensor for collecting the multi-physical quantity state signal of the bearing body is provided on the bearing body.

7. The self-powered device for intelligent bearings according to claim 6, wherein, The sensor is electrically connected to the power output end of the voltage stabilization and rectification mechanism.

8. The self-powered device for intelligent bearings according to claim 7, characterized in that The sensor is installed on the outer ring of the bearing body.

9. The self-powered device for intelligent bearings according to claim 1, wherein, The voltage stabilizing and rectifying mechanism is installed on the side of the bearing end cover facing away from the bearing body, and a first through hole penetrating along its axis is formed in the bearing end cover. A wire located in the first through hole is electrically connected between the voltage stabilizing and rectifying mechanism and the electrode ring.

10. The intelligent bearing self-powered device according to claim 1, characterized in that, Two first friction parts are installed on each of the mounting blocks. The first friction part on the outer peripheral side of the mounting block is away from the bearing body along the axis direction of the bearing body, and the first friction part on the inner peripheral side of the mounting block is close to the bearing body along the axis direction of the bearing body. Two electrode rings are provided on the bearing end cover. A second friction part in a ring structure is coaxially connected to each electrode ring. The second friction part on the outer peripheral side of the bearing end cover is away from the bearing body along the axis direction of the bearing body, and the second friction part on the inner peripheral side of the bearing end cover is close to the bearing body along the axis direction of the bearing body. When the mounting block does not pop out, the two first friction parts are respectively in contact with the corresponding two second friction parts. When the mounting block pops out, the first friction part on the inner peripheral side of the mounting block and the second friction part on the outer peripheral side of the bearing end cover are arranged opposite to and close to each other.

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