An electric meter with automatic closing and circuit breaker device

Abstract

The present invention relates to the technical field of smart electric meters, and provides an electric meter with an automatic closing and circuit breaker device. By integrating an external handle device, a tripping protection device, a driving device and a switching device, the automatic closing and opening control of the electric meter is realized. The external handle device is convenient for manual operation, the tripping protection device ensures safety, the driving device adopts a motor and a transmission rack to cooperate to realize power transmission, and the switching device drives a sliding limiter through a motor to flexibly switch the working state of the driving rod. The electric meter with an automatic closing and circuit breaker device of the present invention has a compact structure and is easy to operate. It can automatically control the closing and opening of the electric meter according to the user's fee situation, improve the efficiency of power management, meet the needs of the smart grid, and ensure safety and stability.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to an electric meter with an automatic closing and breaking device. Background Art

[0002] In the context of the rapid development of smart grid and smart meter technology, the performance of the external circuit breaker of the meter, as a key component of the smart fee control system, directly affects the user's electricity experience and the efficiency of grid management. At present, there are many design solutions for meter circuit breakers on the market, which meet the needs of smart meters to varying degrees, but there are also some problems that need to be solved.

[0003] The Chinese patent with the patent publication number CN104201016B discloses a circuit breaker for prepaid electricity meters with an automatic reclosing function. The circuit breaker detects the control voltage signal of the prepaid electricity meter through the control circuit to realize the power-off and automatic reclosing functions for arrears. Although the patent has some innovations in circuit design and control logic, it does not provide a specific solution for how to realize the automatic operation of the external circuit breaker of the electricity meter, especially how to realize efficient automatic reclosing through a mechanical structure.

[0004] The Chinese patent with the patent publication number CN107799331A discloses an operating mechanism and control method of an external circuit breaker of an electric meter, and adopts a connecting rod transmission technology to realize the operation of the external circuit breaker of the electric meter. The patent drives the worm to rotate through the motor in the operating box, and the worm drives the worm wheel to rotate. The driving member on the worm wheel further drives the guide member to move, and finally realizes the opening and closing actions of the circuit breaker through the linkage of the guide member, the inner shaft and the circuit breaker handle. Although this scheme realizes the automatic control of the circuit breaker and improves the convenience of operation. However, this scheme adopts a connecting rod transmission mechanism to switch the closing, opening and tripping self-protection functions, which has obvious deficiencies in transmission efficiency and reliability. By adopting a connecting rod transmission mechanism to switch the closing, opening and tripping self-protection functions, the meshing of the worm wheel and the toothless gear and the transmission of the connecting rod during the transmission process will generate large friction and energy loss, resulting in reduced transmission efficiency. In addition, under long-term use, components such as the worm wheel, toothless gear and connecting rod are prone to wear, which is easy to cause mechanical failures and affect the reliability and service life of the circuit breaker.

[0005] With the development of smart grids, higher requirements are placed on the intelligence and integration level of electric meters. The existing electric meter closing and circuit breaker design still has many deficiencies in transmission efficiency, reliability, intelligence and integration. How to realize the automatic operation of the electric meter closing and circuit breaker, especially how to realize efficient and reliable automatic reclosing function through mechanical structure, is still a technical problem to be solved in this field. Summary of the invention

[0006] In view of this, the present invention aims to propose an electric meter with an automatic closing and circuit breaker device, aiming to solve the shortcomings of existing electric meters in automatic closing and opening control, especially when the electric meter needs to automatically close and open the circuit breaker according to the user's fee situation, there are problems such as inconvenient operation, low efficiency and safety hazards.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] An electric meter with an automatic closing and circuit breaker device, comprising:

[0009] The external handle device comprises a handle connecting rod, one end of which can rotate along a first rotating shaft on the operating box, and an operating rod is arranged at the other end of the handle connecting rod, and the operating rod passes through a first sliding groove on the operating box and extends into the interior of the operating box to be connected with the circuit breaker handle, and when the handle connecting rod rotates, the circuit breaker handle can be driven to switch between closing and opening positions;

[0010] The tripping protection device comprises a second connecting rod, one end of which can rotate along a second rotating shaft on the operating box, and the other end of which is provided with an external lever, and the external lever passes through a second sliding groove on the operating box and cooperates with a circuit breaker linkage structure inside the operating box to disengage the circuit breaker handle from the closing safety lock in the closing position;

[0011] The driving device comprises a first driving motor and a transmission rack device, wherein the transmission rack device is hingedly fixed to the operation box through a fifth rotating shaft, the first driving motor can drive the transmission rack device to rotate, and a first driving rod and a second driving rod are arranged on the transmission rack device, and the first driving rod and the second driving rod are arranged on the transmission rack device through a rotating shaft and a torsion spring;

[0012] The switching device includes a second drive motor and a sliding limiter, wherein the second drive motor can push the sliding limiter to move from an upper position to a lower position and push the second drive rod to rotate toward a side away from the first rotating shaft;

[0013] The first rotating shaft, the second rotating shaft and the fifth rotating shaft are provided with reset torsion springs for self-reset of the handle connecting rod, the second connecting rod and the transmission rack device in a power failure state;

[0014] The sliding limiter in the switching device is in the upper position, and the second driving rod can push the handle connecting rod to drive the operating rod to move from the closing position to the opening position under the rotation of the transmission rack device. At this time, the first driving rod is always in a disengaged state from the second connecting rod during the rotation process with the transmission rack device;

[0015] The sliding limiter in the switching device moves to the lower position, the second driving rod rotates to the side away from the first rotating shaft, and the first driving rod correspondingly rotates toward the pushing portion of the second connecting rod. When the transmission rack device is driven to rotate by the first driving motor, the first driving rod can drive the second connecting rod to drive the outer lever to rotate, so that the circuit breaker handle is disengaged from the closing safety lock in the closing position. At this time, the second driving rod is always in a disengaged state from the handle connecting rod during the rotation of the transmission rack device.

[0016] Furthermore, one end of the first driving rod is hingedly fixed to the transmission rack device via a third rotating shaft, a torsion spring for self-resetting the first driving rod is arranged at the third rotating shaft, and a first limiting rod is arranged near the middle of the first driving rod; the middle part of the second driving rod is hingedly fixed to the transmission rack device via a fourth rotating shaft, a torsion spring for self-resetting the second driving rod is arranged at the fourth rotating shaft, and a first limiting portion is arranged at one end of the second driving rod, and the first limiting portion can push against the first limiting rod to prevent the first driving rod from self-resetting.

[0017] Furthermore, a second limiting rod is arranged on a side of the second driving rod away from the first limiting portion, and the second limiting rod can be pushed by the sliding limiting component when the second driving rod is driven from the upper position to the lower position and drive the second driving rod to rotate along the fourth rotating shaft.

[0018] Furthermore, a first worm is arranged on the first driving motor, and the first worm drives the transmission rack device to rotate through the first transmission device.

[0019] Furthermore, the first transmission device includes a first transmission gear assembly and a second transmission gear assembly, the first transmission gear assembly is a double gear, namely a first gear part and a second gear part, the first gear part and the second gear part are coaxially arranged, and the tooth diameter ratio of the first gear part and the second gear part is greater than 1.5; the second transmission gear assembly has a double gear, namely a third gear part and a fourth gear part, the third gear part and the fourth gear part are coaxially arranged, and the tooth diameter ratio of the third gear part and the fourth gear part is greater than 1.5; the first worm is meshed with the first gear part of the first transmission gear assembly, the second gear part is meshed with the third gear part, and the fourth gear part is meshed with the transmission rack device for transmission.

[0020] Furthermore, the rack of the transmission rack device is a fan-shaped rack.

[0021] Furthermore, a first flange is provided on the handle connecting rod, and the first flange is used for cooperating with and pushing the pushing end of the second driving rod; a second flange is provided on the second connecting rod, and the second flange is used for cooperating with and pushing the pushing end of the first driving rod.

[0022] Furthermore, the switching device also includes a second transmission device, and the second transmission device performs sliding driving of the sliding limiter under the driving action of the second drive motor.

[0023] Furthermore, the second transmission device includes a third transmission gear and a third connecting rod, the third transmission gear can be driven to rotate by the second drive motor, one end of the third connecting rod is connected to the third transmission gear, and the other end is connected to the sliding limit member, a third sliding groove is arranged on the sliding limit member, and the third sliding groove is sleeved on the first limiting column on the operating box and can slide relatively along it.

[0024] Furthermore, the first slide groove is arranged in an arc shape, the second slide groove is arranged in an arc shape, and the third slide groove is arranged in a long groove shape.

[0025] Compared with the prior art, the electric meter with automatic closing and circuit breaker device of the present invention has the following advantages:

[0026] (1) The electric meter with automatic closing and circuit breaker device described in the present invention realizes the function of automatically closing and opening the electric meter according to the user's fee situation by integrating an external handle device, a tripping protection device, a driving device and a switching device, without manual intervention, which greatly improves the convenience and efficiency of electricity management. At the same time, the design of the tripping protection device effectively prevents the hidden dangers of electricity safety caused by misoperation and enhances the safety performance of the electric meter.

[0027] (2) The electric meter with automatic closing and circuit breaker device described in the present invention has a driving device and a switching device, which realize flexible switching of the working state of the driving rod and precise control of the sliding limiter through ingenious mechanical structure design, optimize the transmission path and enhance the transmission efficiency, provide the equipment with more stable, efficient and flexible power support, ensure the accurate control of the electric meter in different scenarios, and improve the stability and operation accuracy of the system.

[0028] (3) The electric meter with automatic closing and circuit breaker device described in the present invention has a compact structure, optimizes the transmission path, improves the overall performance of the external circuit breaker of the electric meter, and meets the requirements of the smart grid for rapid response and efficient control. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of the automatic closing circuit breaker device of the electric meter according to the embodiment of the present invention in the closing state;

[0031] Figure 2 It is a schematic structural diagram of the automatic closing circuit breaker device of the electric meter according to the embodiment of the present invention in a tripping protection state;

[0032] Figure 3 It is a schematic diagram of the structure of the driving device according to an embodiment of the present invention;

[0033] Figure 4 for Figure 3 A rear view schematic diagram of the structure shown in;

[0034] Figure 5 It is a structural schematic diagram of the first driving rod in the automatic closing and circuit breaker device of the electric meter according to the embodiment of the present invention being in a pushing state and the second driving rod driving the tripping protection device to rotate;

[0035] Figure 6 for Figure 3 A rear view schematic diagram of the drive device shown in;

[0036] Description of reference numerals:

[0037] 100-external handle device; 200-trip protection device; 300-driving device; 400-switching device; 1-operating box; 2-handle connecting rod; 201-first flange; 3-first rotating shaft; 4-operating rod; 5-first slide groove; 6-external lever; 7-second slide groove; 8-second connecting rod; 9-second rotating shaft; 10-second flange; 11-first driving motor; 12-first worm; 13-first transmission device; 14-transmission rack device; 15-first driving rod; 16-second driving rod; 1601-first Limiting part; 17-second driving motor; 18-second transmission device; 19-third transmission gear; 20-third connecting rod; 21-sliding limiting member; 2101-third slide groove; 22-first limiting column; 23-first transmission gear assembly; 2301-first gear part; 2302-second gear part; 24-second transmission gear assembly; 2401-third gear part; 2402-fourth gear part; 25-third rotating shaft; 26-first limiting rod; 27-fourth rotating shaft; 28-second limiting rod; 29-fifth rotating shaft. DETAILED DESCRIPTION

[0038] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0039] It should be noted that all the terms used in the present invention for directional and positional indications, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state (as shown in the accompanying drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] like Figures 1 to 6 As shown, the present application discloses an electric meter with an automatic closing and circuit breaker device, comprising:

[0043] The external handle device 100 includes a handle connecting rod 2, one end of which can rotate along a first rotating shaft 3 on an operating box 1, and an operating rod 4 is arranged at the other end of the handle connecting rod 2. The operating rod 4 passes through a first sliding groove 5 on the operating box 1 and extends into the inside of the operating box 1 to be connected to the circuit breaker handle. When the handle connecting rod 2 rotates, it can drive the circuit breaker handle to switch between closing and opening positions.

[0044] The trip protection device 200 comprises a second connecting rod 8, one end of which can rotate along a second rotating shaft 9 on the operating box 1, and an external lever 6 is arranged at the other end of the second connecting rod 8, and the external lever 6 passes through a second sliding groove 7 on the operating box 1 and cooperates with the circuit breaker linkage structure inside the operating box 1 to disengage the circuit breaker handle from the closing safety lock in the closing position;

[0045] The driving device 300 includes a first driving motor 11 and a transmission rack device 14, wherein the transmission rack device 14 is hingedly fixed to the operation box 1 through a fifth rotating shaft 29, and the first driving motor 11 can drive the transmission rack device 14 to rotate. A first driving rod 15 and a second driving rod 16 are arranged on the transmission rack device 14, and the first driving rod 15 and the second driving rod 16 are arranged on the transmission rack device 14 through a rotating shaft and a torsion spring;

[0046] The switching device 400 includes a second drive motor 17 and a sliding limiter 21, wherein the second drive motor 17 can push the sliding limiter 21 to move from an upper position to a lower position, and push the second drive rod 16 to rotate toward a side away from the first rotating shaft 3;

[0047] The first rotating shaft 3, the second rotating shaft 9, and the fifth rotating shaft 29 are provided with reset torsion springs for self-reset of the handle connecting rod 2, the second connecting rod 8, and the transmission rack device 14 in a power-loss state;

[0048] The sliding limiter 21 in the switching device 400 is in the upper position, and the second driving rod 16 can push the handle connecting rod 2 to drive the operating rod 4 to move from the closing position to the opening position under the rotation of the transmission rack device 14. At this time, the first driving rod 15 is always in a disengaged state from the second connecting rod 8 during the rotation process with the transmission rack device 14;

[0049] The sliding limiter 21 in the switching device 400 moves to the lower position, the second driving rod 16 rotates to the side away from the first rotating shaft 3, and the first driving rod 15 correspondingly rotates toward the pushing part of the second connecting rod 8. When the transmission rack device 14 is driven to rotate by the first driving motor 11, the first driving rod 15 can drive the second connecting rod 8 to drive the external lever 6 to rotate, so that the circuit breaker handle is disengaged from the closing safety lock in the closing position. At this time, the second driving rod 16 is always in a disengaged state from the handle connecting rod 2 during the rotation process with the transmission rack device 14.

[0050] The present application discloses an electric meter with an automatic closing circuit breaker device, which realizes automatic closing and opening control of the electric meter by integrating an external handle device 100, a tripping protection device 200, a driving device 300 and a switching device 400. When the user's fee is small and a trip reminder is required, the electric meter needs to be opened, the sliding limiter 21 in the switching device 400 is in the upper position, the first driving motor 11 in the driving device 300 is started, driving the transmission rack device 14 to rotate, and the second driving rod 16 on the transmission rack device 14 rotates accordingly, pushing the handle connecting rod 2 in the external handle device 100, so that the operating rod 4 moves, and then drives the circuit breaker handle inside the electric meter to switch from the closing position to the opening position. At this time, the first driving rod 15 on the transmission rack device 14 remains disengaged from the second connecting rod 8 of the tripping protection device 200, and the second connecting rod 8 is always in the original position, which does not affect the opening operation; after the tripping reminder, the electric meter needs to be closed, and at this time, the first driving motor 11 in the driving device 300 rotates in the opposite direction, and the handle connecting rod 2 is reset under the action of the self-resetting torsion spring and drives the operating rod 4 and the circuit breaker handle inside the electric meter to switch from the opening position to the closing position; when the electric meter is opened due to arrears, the second driving motor 17 of the switching device 400 is started, pushing the sliding limiter 21 downward The first drive rod 15 is moved so that the second drive rod 16 rotates in the direction away from the first rotating shaft 3 where the handle connecting rod 2 rotates. At the same time, the first drive rod 15 rotates under the action of the torsion spring at its own rotating shaft and rotates to a position close to the pushing portion on the second connecting rod 8. The first drive motor 11 is started and the transmission rack device 14 rotates. At this time, the first drive rod 15 pushes the second connecting rod 8, and cooperates with the circuit breaker linkage structure through the external lever 6, so that the circuit breaker handle is disengaged from the closing safety lock in the closing position. This action is implemented by the cooperation of the energy storage spring mechanism and the safety lock mechanism. This part of the structure belongs to the prior art in this field and will not be described in detail here. At this time, the meter is in the tripping protection state, and then the arrears tripping operation is completed, and the second drive rod 16 remains separated from the handle connecting rod 2 during this process, which does not affect the arrears tripping operation; after the user renews the fee, the first drive rod 15 rotates in the opposite direction, and the second connecting rod 8 is reset under the action of the self-resetting torsion spring and drives the outer lever 6 to be separated from the circuit breaker linkage structure, and the tripping protection state of the meter is invalid. The handle connecting rod 2 is reset under the action of the self-resetting torsion spring and drives the operating rod 4 and the circuit breaker handle inside the meter to switch from the open position to the closed position. The second drive motor 17 of the switching device 400 drives the sliding limiter 21 to move to the upper position, and the second drive rod 16 is reset and drives the first drive rod 15 to rotate to a position away from the push part on the second connecting rod 8, and the meter returns to the initial state. During the whole process, the reset torsion springs on each rotating shaft ensure that the device can automatically reset in the power-losing state.

[0051] The electric meter with automatic closing and circuit breaker device described in the present application realizes the automatic closing and opening functions of the electric meter through a clever mechanical structure design. On the one hand, the electric meter can automatically close and open the circuit according to the user's fee situation without manual intervention, thereby improving the convenience and efficiency of electricity management. On the other hand, through the design of the trip protection device 200, even if the circuit breaker handle inside the electric meter is mistakenly operated to the closing position, the circuit breaker handle can be disengaged from the closing safety lock at the closing position through the cooperation of the external lever 6 and the circuit breaker linkage structure, effectively preventing the hidden danger of electricity safety caused by misoperation.

[0052] As a preferred example of the present application, one end of the first driving rod 15 is hingedly fixed to the transmission rack device 14 through a third rotating shaft 25, a torsion spring for self-resetting the first driving rod 15 is arranged at the third rotating shaft 25, and a first limiting rod 26 is arranged near the middle of the first driving rod 15; the middle part of the second driving rod 16 is hingedly fixed to the transmission rack device 14 through a fourth rotating shaft 27, a torsion spring for self-resetting the second driving rod 16 is arranged at the fourth rotating shaft 27, and a first limiting portion 1601 is arranged at one end of the second driving rod 16, and the first limiting portion 1601 can push on the first limiting rod 26 to prevent the first driving rod 15 from self-resetting. In the present application, when the sliding limiter 21 of the switching device 400 is in the upper position, the second drive rod 16 is hingedly fixed to the transmission rack device 14 by the torsion spring and the fourth rotating shaft 27, and the first limiter 1601 of the second drive rod 16 pushes the first limiter 26 on the first drive rod 15 and moves the pushing end of the first drive rod 15 away from the pushing part on the second connecting rod 8, so that when the transmission rack device 14 is driven to rotate by the first drive motor 11, only the second drive rod 16 is pushed against the handle connecting rod 2 when it rotates integrally with the transmission rack device 14, and the first drive rod 15 is disengaged from the second connecting rod 8 when it rotates integrally with the transmission rack device 14; when the sliding limiter 21 of the switching device 400 is in the upper position, the second drive rod 16 is hingedly fixed to the transmission rack device 14 by the torsion spring and the fourth rotating shaft 27, and the first limiter 1601 of the second drive rod 16 pushes the first limiter 26 on the first drive rod 15 and moves the pushing end of the first drive rod 15 away from the pushing part on the second connecting rod 8, so that when the transmission rack device 14 is driven to rotate by the first drive motor 11, only the second drive rod 16 is pushed against the handle connecting rod 2 when it rotates integrally with the transmission rack device 14, and the first drive rod 15 is disengaged from the second connecting rod 8 when it rotates integrally with the transmission rack device 14. When the limiter 21 is in the lower position, the second drive rod 16 is pushed by the sliding limiter 21 to rotate in the direction away from the first rotation axis 3 where the handle link 2 rotates. At this time, the first limiter 1601 of the second drive rod 16 pushes the first limiter 26 on the first drive rod 15 to disengage, and the first drive rod 15 moves to the pushing portion close to the second link 8 under the action of the torsion spring at the third rotation axis 25, so that when the transmission rack device 14 is driven to rotate by the first drive motor 11, only the first drive rod 15 pushes the second link 8 when rotating with the transmission rack device 14, and the second drive rod 16 disengages from the handle link 2 when rotating with the transmission rack device 14. Preferably, the first limiter 1601 is designed in an arc or bent shape.

[0053] This design achieves flexible switching of the driving rod's working state through simple mechanical linkage, ensuring accurate control of the meter in different scenarios. Even in the event of a sudden power outage or fault, it can ensure that the device quickly returns to its initial state, improving the stability and safety of the system.

[0054] As a preferred example of the present application, a second limit rod 28 is provided on the side of the second drive rod 16 away from the first limit portion 1601, and the second limit rod 28 can be pushed by the sliding limit member 21 when the second drive rod 16 is driven from the upper position to the lower position and drive the second drive rod 16 to rotate along the fourth rotation axis 27.

[0055] Through the above-mentioned optimized design, a second limit rod 28 is added to the second driving rod 16, and a direct mechanical linkage is formed with the sliding limit member 21, which simplifies the mechanical structure, reduces energy loss and mechanical wear, greatly improves the response speed and action accuracy of the electric meter drive device, and improves the operating efficiency and reliability of the device.

[0056] As a preferred example of the present application, a first worm 12 is provided on the first driving motor 11 , and the first worm 12 drives the transmission rack device 14 to rotate through the first transmission device 13 . As a preferred example, the first transmission device 13 includes a first transmission gear assembly 23 and a second transmission gear assembly 24, the first transmission gear assembly 23 is a double gear, namely a first gear portion 2301 and a second gear portion 2302, the first gear portion 2301 and the second gear portion 2302 are coaxially arranged, and the tooth diameter ratio of the first gear portion 2301 to the second gear portion 2302 is greater than 1.5; the second transmission gear assembly 24 has double gears, namely a third gear portion 2401 and a fourth gear portion 2402, the third gear portion 2401 and the fourth gear portion 2402 are coaxially arranged, and the tooth diameter ratio of the third gear portion 2401 to the fourth gear portion 2402 is greater than 1.5; the first worm 12 is meshed with the first gear portion 2301 of the first transmission gear assembly 23, the second gear portion 2302 is meshed with the third gear portion 2401, and the fourth gear portion 2402 is meshed with the transmission rack device 14 for transmission. Preferably, the rack of the transmission rack device 14 is a fan-shaped rack.

[0057] This arrangement realizes efficient transmission and conversion of the power of the first drive motor 11 by introducing a gear transmission structure. Specifically, the first drive motor 11 drives the first worm 12 to rotate, and the first worm 12 meshes with the first gear portion 2301 of the first transmission gear assembly 23 to transmit the rotational force to the first transmission gear assembly 23; the first transmission gear assembly 23 is designed as a double gear, including a first gear portion 2301 and a second gear portion 2302 with a tooth diameter ratio greater than 1.5, and this design realizes the first deceleration and torque increase in the power transmission process; subsequently, the second gear portion 2302 meshes with the third gear portion 2401 of the second transmission gear assembly 24, and the second transmission gear assembly 24 is also a double gear structure, including a third gear portion 2401 and a fourth gear portion 2402 with a tooth diameter ratio greater than 1.5, further realizing the deceleration and torque increase of the power; finally, the fourth gear portion 2402 meshes with the transmission rack device 14 to drive the sector rack to rotate. The entire transmission chain increases the output torque through two decelerations and torque increases, while the special shape of the sector rack is used to achieve the conversion from rotary motion to specific trajectory motion, which can adapt to more complex mechanical action requirements and improve the functionality and adaptability of the equipment. This design provides more stable, efficient and flexible power support for the equipment by optimizing the transmission path and enhancing the transmission efficiency, significantly improving the overall performance and reliability of the equipment and extending the service life of the equipment.

[0058] As a preferred example of the present application, a first flange 201 is provided on the handle connecting rod 2, and the first flange 201 is used for the cooperation and pushing of the pushing end of the second driving rod 16. A second flange 10 is provided on the second connecting rod 8, and the second flange 10 is used for the cooperation and pushing of the pushing end of the first driving rod 15. By providing a flange on the connecting rod to cooperate with the pushing end of the driving rod, the intermediate transmission links are reduced, the energy loss is reduced, the efficiency of force transmission is improved, and the response of the entire mechanical system is faster and more accurate. In addition, the design of the flange enhances the connection strength between the connecting rod and the driving rod, avoids mechanical failures caused by loose connection or falling off, and improves the stability and reliability of the system.

[0059] This setting simplifies the mechanical structure through the cooperation between the flange and the push end of the drive rod, making the entire system more compact and lightweight, improving the performance of the mechanical system, and reducing manufacturing costs and maintenance difficulties. The position and shape of the flange can also be adjusted according to different mechanical needs to adapt to different motion trajectories and force transmission requirements, thereby improving the versatility and flexibility of the device.

[0060] As a preferred example of the present application, the switching device 400 further includes a second transmission device 18, and the second transmission device 18 performs sliding drive of the sliding limiter 21 under the driving action of the second drive motor 17. As a preferred example of the present application, the second transmission device 18 includes a third transmission gear 19 and a third connecting rod 20, and the third transmission gear 19 can be driven to rotate by the second drive motor 17, one end of the third connecting rod 20 is connected to the third transmission gear 19, and the other end is connected to the sliding limiter 21, and a third slide groove 2101 is provided on the sliding limiter 21, and the third slide groove 2101 is sleeved on the first limiter column 22 on the operation box 1 and can slide relatively along it.

[0061] This setting further optimizes the structure of the switching device 400. The switching device introduces a second transmission device, specifically a crank-connecting rod structure formed by a third transmission gear 19 and a third connecting rod 20, to achieve precise control of the sliding limiter, avoiding deviation and jitter that may be caused by direct drive, thereby improving the stability and operating accuracy of the entire system, with a compact structure and reliable drive.

[0062] In the example of the present application, a high-performance PCB board is fixedly installed inside the operation box 1, and a control chip is integrated on the PCB board. The control chip realizes direct electrical connection with the first drive motor 11 and the second drive motor 17, ensuring that the drive motor can accurately respond to the instructions of the control chip and realize fast and accurate action. In order to further improve the convenience of user operation, automatic and manual adjustment buttons are carefully set on the top of the operation box, and these buttons are connected to the control chip on the PCB board through precise circuits. The user can easily switch the automatic reclosing and manual operation modes of the meter by simply pressing a button, which greatly improves the flexibility and convenience of use. In the example of the present application, the movement positions of the first drive rod 15, the second drive rod 16, and the sliding limiter 21 can be detected by sensors. For example, the rotation angles of the first worm 12 on the first drive motor 11 and the second worm on the second drive motor 17 are detected by relatively independent Hall sensors, and the movement strokes of the first drive rod 15, the second drive rod 16, and the sliding limiter 21 are calculated in combination with the gear transmission ratio, thereby satisfying the switching of the circuit breaker handle of the electric meter between the closing and opening positions and the switching of the start-up state and the failure state of the tripping protection device 200.

[0063] The electric meter with automatic closing and circuit-breaking device described in the present application not only simplifies the system structure and improves space utilization, making the entire system more compact and beautiful by optimizing the design of the external closing and circuit-breaking device of the electric meter, but also significantly reduces the power outage time and manual intervention costs caused by circuit failures through automatic detection and power supply restoration functions. At the same time, combined with remote monitoring and control technology, it further improves the safety, reliability and management efficiency of the power system, bringing great convenience and value to users and management departments.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric meter with an automatic closing and circuit breaker device, characterized in that: include: An external handle device (100) comprises a handle connecting rod (2), one end of which is capable of rotating along a first rotating shaft (3) on an operating box (1), an operating rod (4) is arranged on the other end of the handle connecting rod (2), the operating rod (4) passes through a first sliding groove (5) on the operating box (1) and extends into the interior of the operating box (1) to be connected to a circuit breaker handle, and when the handle connecting rod (2) rotates, it can drive the circuit breaker handle to switch between closing and opening positions; The tripping protection device (200) comprises a second connecting rod (8), one end of which is capable of rotating along a second rotating shaft (9) on an operating box (1), and an external lever (6) is arranged on the other end of the second connecting rod (8), and the external lever (6) passes through a second sliding groove (7) on the operating box (1) and cooperates with a circuit breaker linkage structure inside the operating box (1) so that the circuit breaker handle is disengaged from the closing safety lock in the closing position; A driving device (300) comprises a first driving motor (11) and a transmission rack device (14), wherein the transmission rack device (14) is hingedly fixed to the operation box (1) via a fifth rotating shaft (29), the first driving motor (11) can drive the transmission rack device (14) to rotate, a first driving rod (15) and a second driving rod (16) are arranged on the transmission rack device (14), and the first driving rod (15) and the second driving rod (16) are arranged on the transmission rack device (14) via a rotating shaft and a torsion spring; The switching device (400) comprises a second drive motor (17) and a sliding limiter (21), wherein the second drive motor (17) is capable of pushing the sliding limiter (21) to move from an upper position to a lower position, and pushing the second drive rod (16) to rotate toward a side away from the first rotating shaft (3); The first rotating shaft (3), the second rotating shaft (9) and the fifth rotating shaft (29) are provided with reset torsion springs for self-reset of the handle connecting rod (2), the second connecting rod (8) and the transmission rack device (14) in a power failure state; The sliding limiter (21) in the switching device (400) is in an upper position, and the second driving rod (16) can push the handle connecting rod (2) to drive the operating rod (4) to move from the closing position to the opening position under the rotation of the transmission rack device (14). At this time, the first driving rod (15) is always in a disengaged state from the second connecting rod (8) during the process of rotating with the transmission rack device (14); The sliding limiter (21) in the switching device (400) moves to the lower position, the second drive rod (16) rotates toward the side away from the first rotating shaft (3), and the first drive rod (15) correspondingly rotates toward the pushing portion of the second connecting rod (8). When the transmission rack device (14) is driven to rotate by the first drive motor (11), the first drive rod (15) can drive the second connecting rod (8) to drive the external lever (6) to rotate, so that the circuit breaker handle is disengaged from the closing safety lock in the closing position. At this time, the second drive rod (16) is always in a disengaged state from the handle connecting rod (2) during the process of rotating with the transmission rack device (14).

2. The electric meter with automatic closing and circuit breaker device according to claim 1, characterized in that: One end of the first driving rod (15) is hingedly fixed to the transmission rack device (14) via a third rotating shaft (25), a torsion spring for self-resetting the first driving rod (15) is arranged at the third rotating shaft (25), and a first limiting rod (26) is arranged near the middle of the first driving rod (15); the middle of the second driving rod (16) is hingedly fixed to the transmission rack device (14) via a fourth rotating shaft (27), a torsion spring for self-resetting the second driving rod (16) is arranged at the fourth rotating shaft (27), and a first limiting portion (1601) is arranged at one end of the second driving rod (16), and the first limiting portion (1601) can push against the first limiting rod (26) to prevent the first driving rod (15) from self-resetting.

3. The electric meter with automatic closing and circuit breaker device according to claim 2, characterized in that: A second limiting rod (28) is provided on the second driving rod (16) at a side away from the first limiting portion (1601), and the second limiting rod (28) can be pushed by the sliding limiting member (21) when the second driving rod (16) is driven from the upper position to the lower position, and drive the second driving rod (16) to rotate along the fourth rotating shaft (27).

4. The electric meter with automatic closing and circuit breaker device according to any one of claims 1 to 3, characterized in that: A first worm gear (12) is arranged on the first driving motor (11), and the first worm gear (12) drives a transmission rack device (14) to rotate through a first transmission device (13).

5. The electric meter with automatic closing and circuit breaker device according to claim 4, characterized in that: The first transmission device (13) comprises a first transmission gear assembly (23) and a second transmission gear assembly (24); the first transmission gear assembly (23) is a double gear, which comprises a first gear portion (2301) and a second gear portion (2302); the first gear portion (2301) and the second gear portion (2302) are coaxially arranged, and the tooth diameter ratio of the first gear portion (2301) to the second gear portion (2302) is greater than 1.5; the second transmission gear assembly (24) is a double gear, which comprises a third gear portion (2 401), a fourth gear portion (2402), the third gear portion (2401) and the fourth gear portion (2402) are coaxially arranged and the tooth diameter ratio of the third gear portion (2401) and the fourth gear portion (2402) is greater than 1.5; the first worm gear (12) is meshed with the first gear portion (2301) of the first transmission gear assembly (23), the second gear portion (2302) is meshed with the third gear portion (2401), and the fourth gear portion (2402) is meshed with the transmission rack device (14) for transmission.

6. The electric meter with automatic closing and circuit breaker device according to claim 5, characterized in that: The rack of the transmission rack device (14) is a fan-shaped rack.

7. The electric meter with automatic closing and circuit breaker device according to claim 1, characterized in that: A first flange (201) is provided on the handle connecting rod (2), and the first flange (201) is used for cooperating with the push end of the second driving rod (16). A second flange (10) is provided on the second connecting rod (8), and the second flange (10) is used for cooperating with the push end of the first driving rod (15).

8. The electric meter with automatic closing and circuit breaker device according to claim 1, characterized in that: The switching device (400) further comprises a second transmission device (18), wherein the second transmission device (18) performs sliding drive of the sliding limiter (21) under the driving action of the second drive motor (17).

9. The electric meter with automatic closing and circuit breaker device according to claim 8, characterized in that: The second transmission device (18) comprises a third transmission gear (19) and a third connecting rod (20); the third transmission gear (19) can be driven to rotate by the second drive motor (17); one end of the third connecting rod (20) is connected to the third transmission gear (19), and the other end is connected to a sliding limiter (21); a third sliding groove (2101) is arranged on the sliding limiter (21); the third sliding groove (2101) is sleeved on the first limiter column (22) on the operating box (1) and can slide relatively therewith.

10. The electric meter with automatic closing and circuit breaker device according to claim 9, characterized in that: The first slide groove (5) is arranged in an arc shape, the second slide groove (7) is arranged in an arc shape, and the third slide groove (2101) is arranged in a long groove shape.

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