An intelligent circuit breaker mechanical fault prediction device

Abstract

The application discloses a kind of intelligent circuit breaker mechanical fault prediction devices, including intelligent circuit breaker body, and the inner side wall of intelligent circuit breaker body is fixedly connected with mechanical locking device by screw, the power input end of mechanical locking device is provided with reset switch, and the power output end of mechanical locking device is provided with movable contact, and the inner side wall of intelligent circuit breaker body is fixedly connected with protection electromagnetic release, rapid arc extinguishing device and inner partition by screw at the position below mechanical locking device close to it;With the impact head of direct contact and movable contact linkage of tuning fork, movable contact can be directly detected, does not influence movable contact to circuit break at the same time, and also can avoid the problem that traditional vibration signal is weakened or lost, to cause signal acquisition information inaccurate, guarantee the protection effect of intelligent circuit breaker body to electrical equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical fault prediction of circuit breakers, and particularly relates to an intelligent mechanical fault prediction device for circuit breakers. BACKGROUND

[0002] A circuit breaker refers to a reset switch device capable of closing, carrying and opening the current under normal loop conditions and capable of closing, carrying and opening the current under abnormal loop conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their use range, and the division of high-low voltage boundary is relatively ambiguous. Generally, 3kV or above is referred to as high-voltage electrical apparatus. The mechanism of an intelligent circuit breaker is located on the front of the circuit breaker. The mechanism adopts a five-link free trip mechanism and is designed in an energy storage form. During use, the mechanism is always in a pre-energy storage position. As long as the circuit breaker receives a closing command, the circuit breaker can be immediately closed instantaneously, which is completed by a pre-energy release button or a closing electromagnet. At present, the mechanism of the intelligent circuit breaker lacks corresponding mechanical faults to predict the mechanical faults inside the intelligent circuit breaker, which may easily cause the malfunction of the circuit breaker and damage the subsequent equipment.

[0003] The existing technical scheme for predicting mechanical faults of circuit breakers discloses a high-voltage circuit breaker mechanical fault vibration monitoring device, which comprises a power module, a signal acquisition module, a signal conditioning module, an external storage module, a control module, an A / D conversion module and a fault alarm module. The power module is connected with the signal acquisition module, the control module, the A / D conversion module and the fault alarm module. The input end of the signal acquisition module is connected with the high-voltage circuit breaker, and the signal acquisition module is used for acquiring the vibration signal of the high-voltage circuit breaker. The output end of the signal acquisition module is connected with the signal conditioning module. The signal conditioning module is connected with the control module through the A / D conversion module. The control module is connected with the external storage module and the fault alarm module.

[0004] The existing technology usually judges whether there is a mechanical fault by the vibration signal in the circuit breaker, so as to achieve the purpose of monitoring. However, the vibration signal in the circuit breaker is unstable. Due to the existence of other components in the circuit breaker, the vibration needs to be transmitted for several times before being monitored. There is a loss in the transmission path, and the loss amount is uncontrollable. Therefore, the vibration signal has errors and cannot intuitively and accurately monitor whether there is a mechanical fault in the circuit breaker. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an intelligent circuit breaker mechanical fault prediction device to solve the technical problem that there is a lack of corresponding mechanical fault prediction of the internal mechanical fault of the intelligent circuit breaker.

[0006] The present application adopts the following technical scheme:

[0007] The application discloses a mechanical fault prediction device of an intelligent circuit breaker.

[0008] The inside wall of the intelligent circuit breaker body is fixedly connected with a short-circuit protection electromagnetic tripper, a rapid arc extinguishing device and an inner partition plate at positions close to the lower part of the mechanical locking device.

[0009] The inside wall of the intelligent circuit breaker body is provided with an overload protection bimetallic strip at a position close to the upper side of the mechanical locking device.

[0010] The outside wall of the moving contact is provided with a first linkage rod integrally formed.

[0011] The outside wall of the intelligent circuit breaker body is fixedly connected with a first sealing cover at a position close to the outside of the impact head.

[0012] Preferably, the outside wall of the moving contact is provided with a second linkage rod.

[0013] The outside wall of the intelligent circuit breaker body is fixedly connected with a second sealing cover at a position close to the outside of the extrusion head.

[0014] Preferably, the outside wall of the second sealing cover is fixedly connected with a controller and a wireless signal receiving device through bolts.

[0015] Preferably, the sound sensor, the pressure sensor and the wireless signal receiving device are electrically connected with the controller.

[0016] Preferably, the moving butt joint and the static butt joint are matched.

[0017] Preferably, the outside wall of the intelligent circuit breaker body is provided with a through groove at a position close to the outside of the reset switch.

[0018] Preferably, a first through groove is formed on the one side outer wall of the intelligent circuit breaker body near the outer side of the first linkage rod, and the impact head is located in the interior of the first sealing cover, and the cross section of the first through groove is arc-shaped.

[0019] Preferably, a second through groove is formed on the other side outer wall of the intelligent circuit breaker body near the outer side of the second linkage rod, and the extrusion head is located in the interior of the second sealing cover, and the cross section of the second through groove is arc-shaped.

[0020] Preferably, the impact head moves synchronously with the movement track of the movable contact, and the impact head impacts the tuning fork during the movement.

[0021] Preferably, the movable contact is precisely butted with the fixed contact under the driving of the mechanical locking device.

[0022] Compared with the prior art, the intelligent circuit breaker mechanical fault prediction device has at least the following beneficial effects:

[0023] The intelligent circuit breaker mechanical fault prediction device has at least the following beneficial effects: The impact head directly contacts the movable contact, so that the movable contact can be directly detected without affecting the circuit breaking of the movable contact, and the problem of inaccurate signal acquisition information caused by the weakening or loss of the traditional vibration signal is avoided, thereby guaranteeing the protection of the intelligent circuit breaker body on the electrical equipment.

[0024] Further, the pressure sensor detects the extrusion force received by the static butt joint column, and the change of the pressure value is used to judge the mechanical rebound strength of the movable contact, so as to realize the double detection of the vibration sound and the extrusion pressure.

[0025] Further, the problem of misalignment of the static butt joint column and the movable butt joint column under gradual extrusion is avoided, thereby guaranteeing the stability during butt extrusion.

[0026] Further, the cross section of the first through groove is arc-shaped, so that the first linkage rod can move smoothly, and the movement of the first linkage rod is not blocked.

[0027] Furthermore, the cross-section of the second through groove is arc-shaped. The setting of the second through groove allows the second linkage rod to move smoothly and avoids obstruction of the movement of the second linkage rod.

[0028] In summary, the present invention can ensure the protective function of the intelligent circuit breaker body for electrical equipment.

[0029] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the following description of the relative embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the mating structure of the intelligent circuit breaker body and the second sealing cover of the present invention;

[0033] Figure 3 This is a schematic diagram of the mating structure of the intelligent circuit breaker body and the first sealing cover of the present invention;

[0034] Figure 4 This is a schematic diagram of the first sealing cover structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the second sealing cover structure of the present invention;

[0036] Figure 6 This is a partial structural diagram of the moving contact of the present invention;

[0037] Figure 7 This is a cross-sectional view of the arc-shaped seat of the present invention;

[0038] Figure 8 For the present invention Figure 1 Enlarged view of point A in the image.

[0039] 1. Intelligent circuit breaker body; 2. Mechanical locking device; 3. Reset switch; 4. Moving contact; 5. Short-circuit protection electromagnetic release; 6. Rapid arc extinguishing device; 7. Inner partition plate; 8. Overload protection bimetallic strip; 9. Terminal post; 10. First linkage rod; 11. Impact head; 12. Second linkage rod; 13. Extrusion head; 14. Moving butt joint post; 15. First through slot; 16. First sealing cover; 17. Tone fork; 18. Sound sensor; 19. Second through slot; 20. Second sealing cover; 21. Arc-shaped seat; 22. Pressure sensor; 23. Spring; 24. Static butt joint post; 25. Controller; 26. Wireless signal receiver; 27. Fixed contact. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one edge" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] It should be understood that the terms "comprises" and "comprising," when used in this specification and the following claims, indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0044] It should also be understood that the terms used in the specification and the following claims are intended to describe particular embodiments and do not intend to limit the present application. As used in the specification and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0045] It should further be understood that the term "and / or" used in the specification and the following claims is intended to refer to any combination of one or more of the associated listed items and all possible combinations thereof.

[0046] Various structural diagrams according to the disclosed embodiments of the present application are shown in the accompanying drawings. These drawings are not drawn to scale, in which certain details are exaggerated for the purpose of clarity and some details may be omitted. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are only exemplary, and in actuality may deviate due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes and relative positions can be additionally designed by those skilled in the art according to actual needs.

[0047] The present application provides a kind of intelligent circuit breaker mechanical fault prediction device, the inner side wall of intelligent circuit breaker body is fixedly connected with mechanical locking device by screw, the power input end of mechanical locking device is provided with reset switch, and the power output end of mechanical locking device is provided with movable contact, the inner side wall of intelligent circuit breaker body is fixedly connected with protection electromagnetic release, rapid arc extinguishing device and inner partition by screw at the position below mechanical locking device;With the direct contact of tuning fork and the impact head of movable contact linkage, movable contact can be directly detected, does not influence movable contact to circuit break at the same time, and it can also avoid the problem that traditional vibration signal is weakened or lost, to cause signal acquisition information inaccurate, guarantee the protection effect of intelligent circuit breaker body to electrical equipment.

[0048] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 And Figure 8The application discloses an intelligent circuit breaker mechanical fault prediction device, which comprises an intelligent circuit breaker body 1, a mechanical locking device 2 fixedly connected to the inner side wall of the intelligent circuit breaker body 1 through screws, and a reset switch 3 arranged at the power input end of the mechanical locking device 2. A through slot is formed in the outer side position of the side wall of the intelligent circuit breaker body 1 adjacent to a first sealing cover 16 and close to the reset switch 3. The reset switch 3 protrudes from the intelligent circuit breaker body 1, so that the opening of the intelligent circuit breaker body 1 is controlled, and the reset switch 3 is manually pushed upward after the circuit protection, so that the intelligent circuit breaker body 1 has circuit protection again. A moving contact 4 is arranged at the power output end of the mechanical locking device 2. A short-circuit protection electromagnetic release 5, a rapid arc extinguishing device 6 and an inner partition plate 7 are fixedly connected to the lower position of the inner side wall of the intelligent circuit breaker body 1 through screws. The inner partition plate 7 is located between the short-circuit protection electromagnetic release 5 and the rapid arc extinguishing device 6. A fixed contact 27 is arranged at the top of the inner partition plate 7. The moving contact 4 can be precisely connected with the fixed contact 27 under the drive of the mechanical locking device 2. After the precise connection of the moving contact 4 and the fixed contact 27, the circuit forms a passage. An overload protection bimetallic strip 8 is arranged at the upper side position of the inner side wall of the intelligent circuit breaker body 1 close to the mechanical locking device 2. A terminal post 9 is embedded in the side wall of the intelligent circuit breaker body 1. A first linkage rod 10 is integrally formed on one side of the moving contact 4. A striking head 11 is integrally formed on the end of the first linkage rod 10 away from the moving contact 4. A first sealing cover 16 is fixedly connected to the outer side position of the side wall of the intelligent circuit breaker body 1 close to the striking head 11 through screws. A tuning fork 17 is fixedly connected to the upper side position of the inner wall of the first sealing cover 16 close to the striking head 11 through screws. The striking force of the striking head 11 is detected by the vibration of the tuning fork 17, so that the rebounding force of the moving contact 4 connected with the striking head 11 is judged, and the mechanical performance is further judged. The performance of the moving contact 4 is reduced due to long-time use, the reset ability of the moving contact 4 is poor, the circuit is instantaneously short-circuited, the striking head 11 moves synchronously along the movement track of the moving contact 4, and the striking head 11 strikes the tuning fork 17 in the moving process. A sound sensor 18 is embedded and fixed at the top of the first sealing cover 16. The sound emitted by the tuning fork 17 is collected by the sound sensor 18. The collected sound information is compared, so that the mechanical performance of the moving contact 4 is judged. A first through slot 15 is formed in the outer side position of the side wall of the intelligent circuit breaker body 1 close to the first linkage rod 10. The striking head 11 is located in the first sealing cover 16. The cross section of the first through slot 15 is arc-shaped. The first linkage rod 10 is smoothly moved through the first through slot 15, and the movement of the first linkage rod 10 is not blocked.

[0049] In operation, the prior art usually judges whether there is mechanical failure by the vibration signal in the circuit breaker, so as to achieve the purpose of monitoring. However, the vibration signal in the circuit breaker is unstable. Due to the existence of other components in the circuit breaker, the vibration can be monitored only after several transmissions. There is a loss in the transmission path, and the loss amount is uncontrollable. Therefore, the vibration signal has errors, and the circuit breaker cannot be directly and accurately monitored. The technical scheme can solve the above problems, and the specific working mode is as follows:

[0050] The first sealing cover 16 is installed and fixed on the outer side wall of the intelligent circuit breaker body 1. At this time, the impact head 11 is located below the side of the tuning fork 17. When the circuit is abnormal, the short-circuit protection electromagnetic release 5 performs the operation of unhooking. The moving contact 4 on the mechanical locking device 2 moves upward and rebounds quickly under the action of pre-energy storage. The moving contact 4 and the fixed contact 27 are separated, and the circuit is disconnected. In the moving process of the moving contact 4, the first linkage rod 10 on the moving contact 4 moves synchronously. The impact head 11 at one end of the first linkage rod 10 also moves synchronously. The impact head 11 hits the tuning fork 17 in the moving process. The tuning fork 17 vibrates and emits sound after being hit. The sound sensor 18 collects the sound. The collected sound information is transmitted to the remote end through the wireless signal receiver 26. The memory, recognition comparator and other structures set on the remote end are used to compare the collected sound information. When the collected sound information changes (becomes weaker), it means that the rebound potential energy of the moving contact 4 is poor. The mechanical locking device 2 is prone to mechanical failure, which causes the intelligent circuit breaker body 1 to lose the ability to break the short circuit, thereby causing damage to the electrical equipment. The tuning fork 17 directly contacts the impact head 11 connected with the moving contact 4, which can directly detect the moving contact 4 without affecting the circuit breaking of the moving contact 4. At the same time, it can also avoid the problem that the traditional vibration signal is weakened and affects the accuracy of signal collection information.

[0051] Please refer to Figure 2 、 Figure 5 、 Figure 6 and Figure 8, including the moving contact 4, the other side of the outer wall of the moving contact 4 is integrally formed with the second linkage rod 12, the end of the second linkage rod 12 away from the moving contact 4 is integrally formed with the extrusion head 13, the top of the extrusion head 13 is provided with the dynamic butt column 14, the side of the intelligent circuit breaker body 1 is provided with the second sealing cover 20 through screw connection close to the outer side of the extrusion head 13, the side of the second sealing cover 20 is provided with the controller 25 and the wireless signal receiver 26 through bolt connection, the controller 25 is located above the wireless signal receiver 26, the sound sensor 18, the pressure sensor 22 and the wireless signal receiver 26 are electrically connected with the controller 25, the inside top of the second sealing cover 20 is provided with the arc-shaped seat 21 through screw connection, the inside top of the arc-shaped seat 21 is provided with the pressure sensor 22, the extrusion force received by the static butt column 24 is detected through the pressure sensor 22, and the mechanical rebound force of the moving contact 4 is judged by using the change of the pressure value, the double detection of vibration sound and extrusion pressure is realized, the bottom of the pressure sensor 22 is provided with the spring 23, the bottom end of the spring 23 is provided with the static butt column 24, the dynamic butt column 14 and the static butt column 24 are matched and fitted, the movement track of the static butt column 24 in the arc-shaped seat 21 is the same as the movement track of the moving contact 4, the problem of misplacement of the static butt column 24 and the dynamic butt column 14 under gradual extrusion is avoided, the stability during butt extrusion is ensured, the second through groove 19 is arranged on the other side of the intelligent circuit breaker body 1 close to the outer side of the second linkage rod 12, the extrusion head 13 is located in the second sealing cover 20, the cross section of the second through groove 19 is arc-shaped, the second linkage rod 12 can be smoothly moved through the arrangement of the second through groove 19, and the movement of the second linkage rod 12 is avoided.

[0052] In work, the prior art usually judges whether there is mechanical failure by the vibration signal in the circuit breaker, and then achieves the purpose of monitoring, but the vibration signal in the circuit breaker is unstable, due to the existence of other components in the circuit breaker, the vibration can be monitored after several times of transmission, there is loss on the transmission path, the loss amount is uncontrollable, so that the vibration signal has error, and the existence of mechanical failure in the circuit breaker cannot be directly and accurately monitored, the technical scheme can solve the above problems, and the specific working mode is as follows:

[0053] The second sealing cover 20 is fixed on the outer side wall of the intelligent circuit breaker body 1, at this time, the extrusion head 13 is located below the static butt joint column 24, when the circuit is abnormal, the short-circuit protection electromagnetic release 5 is operated, the movable contact 4 on the mechanical locking device 2 is quickly tilted and moved upward under the action of pre-energy storage, the movable contact 4 and the fixed contact 27 are separated, the circuit is disconnected, in the movement process of the movable contact 4, the second linkage rod 12 on the movable contact 4 moves synchronously, the extrusion head 13 at one end of the second linkage rod 12 also moves synchronously, the extrusion head 13 moves in the movement process, the movable butt joint column 14 contacts the static butt joint column 24, the static butt joint column 24 moves in the inside of the arc-shaped seat 21 after being impacted, the static butt joint column 24 extrudes the spring 23, the spring 23 is compressed, the spring 23 extrudes the pressure sensor 22 under the action of elastic deformation force, the pressure sensor 22 detects the pressure value, the collected pressure information is sent to the remote end through the wireless signal receiver 26, and the memory, the identification comparator and other structures provided on the remote end are used to realize the contrast of the collected pressure information, when the collected pressure information changes (becomes smaller), it indicates that the rebound potential energy of the movable contact 4 is poor, and the mechanical locking device 2 is prone to mechanical failure, so that the intelligent circuit breaker body 1 loses the circuit breaking ability of short circuit, thereby causing damage to the electrical equipment.

[0054] The working principle of the intelligent circuit breaker mechanical fault prediction device is as follows:

[0055] The first sealing cover 16 is fixed on the outer side wall of the intelligent circuit breaker body 1, at this time, the impact head 11 is located below the side of the tuning fork 17, when the circuit is abnormal, the short-circuit protection electromagnetic release 5 is operated, the movable contact 4 on the mechanical locking device 2 is quickly tilted and moved upward under the action of pre-energy storage, the movable contact 4 and the fixed contact 27 are separated, the circuit is disconnected, in the movement process of the movable contact 4, the first linkage rod 10 on the movable contact 4 moves synchronously, the impact head 11 at one end of the first linkage rod 10 also moves synchronously, the impact head 11 impacts the tuning fork 17 in the movement process, the tuning fork 17 vibrates and emits sound after being impacted, and the sound sensor 18 collects the sound;

[0056] The second sealing cover 20 is fixed on the outer side wall of the intelligent circuit breaker body 1, at this time, the extrusion head 13 is located below the static butt joint column 24, when the circuit is abnormal, the short-circuit protection electromagnetic release 5 is operated, the movable contact 4 on the mechanical locking device 2 is quickly tilted upward and rebounded under the action of pre-energy storage, the movable contact 4 and the fixed contact 27 are separated, the circuit is disconnected, in the movement process of the movable contact 4, the second linkage rod 12 on the movable contact 4 moves synchronously, the extrusion head 13 at one end of the second linkage rod 12 also moves synchronously, the extrusion head 13 moves in the movement process, the movable butt joint column 14 is in contact with the static butt joint column 24, the static butt joint column 24 moves in the inside of the arc-shaped seat 21 after being impacted, the static butt joint column 24 extrudes the spring 23, the spring 23 is compressed, the spring 23 extrudes the pressure sensor 22 under the action of elastic deformation force, the pressure sensor 22 detects the pressure value;

[0057] The collected sound information and pressure information are sent to the remote end through the wireless signal receiving device 26, and the memory, identification comparator and other structures arranged on the remote end are used to compare the collected sound information and pressure information, when the collected sound information changes (becomes weaker) and the pressure information changes (becomes smaller), it indicates that the rebound potential energy of the movable contact 4 is poor, and the mechanical locking device 2 is prone to mechanical failure, so that the intelligent circuit breaker body 1 loses the circuit breaking ability of short circuit, thereby causing the damage of the electrical equipment, the tone fork 17 directly contacts the impact head 11 linked with the movable contact 4, directly detects the movable contact 4, does not affect the circuit breaking of the movable contact 4, and avoids the problem that the traditional vibration signal is weakened and the signal collection information is inaccurate.

[0058] In summary, the intelligent circuit breaker mechanical fault prediction device can directly detect the movable contact by directly contacting the impact head linked with the movable contact, does not affect the circuit breaking of the movable contact, and avoids the problem that the traditional vibration signal is weakened or lost and the signal collection information is inaccurate.

[0059] The above content only illustrates the technical idea of the present application, and cannot limit the protection scope of the present application, any modification made according to the technical idea of the present application on the basis of the technical scheme falls within the protection scope of the present application.

Claims

1. An intelligent circuit breaker mechanical failure prediction device, characterized by, The utility model relates to a kind of intelligent circuit breaker, including intelligent circuit breaker body (1), the inner side wall of intelligent circuit breaker body (1) is fixedly connected with mechanical locking device (2), the power input end of mechanical locking device (2) is provided with reset switch (3), the power output end of mechanical locking device (2) is provided with movable contact (4); The inner side wall of intelligent circuit breaker body (1) is fixedly connected with short-circuit protection electromagnetic release (5), rapid arc extinguishing device (6) and inner baffle (7) respectively at the lower position close to mechanical locking device (2), and the inner baffle (7) is located between short-circuit protection electromagnetic release (5) and rapid arc extinguishing device (6), and the top of inner baffle (7) is provided with fixed contact (27); The inner side wall of intelligent circuit breaker body (1) is provided with overload protection bimetal (8) at the side upper position close to mechanical locking device (2), and the corresponding side outer wall of intelligent circuit breaker body (1) is embedded with terminal post (9); The side outer wall of movable contact (4) is provided with integrally-formed first linkage rod (10), the end of first linkage rod (10) away from movable contact (4) is provided with impact head (11), the other side outer wall of movable contact (4) is provided with second linkage rod (12), the end of second linkage rod (12) away from movable contact (4) is provided with extrusion head (13), and the top of extrusion head (13) is provided with movable butt joint column (14); The other side outer wall of intelligent circuit breaker body (1) is fixedly connected with second sealing cover (20) at the outer side position close to extrusion head (13), the inside top of second sealing cover (20) is fixedly connected with arc-shaped seat (21), the top in arc-shaped seat (21) is provided with pressure sensor (22), the bottom of pressure sensor (22) is provided with spring (23), and the bottom end of spring (23) is provided with static butt joint column (24); The side outer wall of intelligent circuit breaker body (1) is fixedly connected with first sealing cover (16) at the outer side position close to impact head (11), the side inner wall of first sealing cover (16) is fixedly connected with tuning fork (17) at the side upper position close to impact head (11), and the top of first sealing cover (16) is embedded with sound sensor (18).

2. The intelligent circuit breaker mechanical failure prediction device of claim 1, wherein, The side outer wall of second sealing cover (20) is fixedly connected with controller (25) and wireless signal receiving transceiver (26) by bolt, and controller (25) is located above wireless signal receiving transceiver (26).

3. The intelligent circuit breaker mechanical failure prediction device of claim 2, wherein, Sound sensor (18), pressure sensor (22) and wireless signal receiving transceiver (26) are electrically connected with controller (25).

4. The intelligent circuit breaker mechanical failure prediction device of claim 1, wherein, Movable butt joint column (14) and static butt joint column (24) are matched, and the movement track of static butt joint column (24) in arc-shaped seat (21) is same with the movement track of movable contact (4).

5. The intelligent circuit breaker mechanical failure prediction device of claim 1, wherein, The side outer wall of intelligent circuit breaker body (1) adjacent to first sealing cover (16) is provided with through slot at the outer side position close to reset switch (3), and reset switch (3) protrudes from intelligent circuit breaker body (1).

6. The intelligent circuit breaker mechanical failure prediction device of claim 5, wherein, The first through slot (15) is arranged on one side of the intelligent circuit breaker body (1) and close to the outer side of the first linkage rod (10), the impact head (11) is located in the first sealing cover (16), and the cross section of the first through slot (15) is arc-shaped.

7. The intelligent circuit breaker mechanical failure prediction device of claim 5, wherein, The second through slot (19) is arranged on the other side of the intelligent circuit breaker body (1) and close to the outer side of the second linkage rod (12), the extrusion head (13) is located in the second sealing cover (20), and the cross section of the second through slot (19) is arc-shaped.

8. The intelligent circuit breaker mechanical failure prediction device of claim 1, wherein, The impact head (11) moves synchronously with the movement track of the movable contact (4), and the impact head (11) impacts the tuning fork (17) in the moving process.

9. The intelligent circuit breaker mechanical failure prediction device of claim 1, wherein, The movable contact (4) is precisely butted with the fixed contact (27) under the driving of the mechanical locking device (2).

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