A disconnecting interlocking mechanism of a universal circuit breaker frame

Abstract

This application proposes a universal circuit breaker drawer interlocking mechanism, comprising a circuit breaker drawer, a circuit breaker body, an interlocking mechanism, and a pushing mechanism. The interlocking mechanism includes a base, an interlocking top block, and a linkage sliding plate, which controls the lifting and lowering of the interlocking top block according to the circuit breaker's open / closed state, restricting its movement. A locking operation button facilitates manual control. The locking sliding plate inside the mounting cover and the interlocking top block form an interlocking structure. The linkage sliding plate and the pushing mechanism cooperate through a limit block, and a movable connector further restricts the movement of the interlocking top block. A support base, a swing plate, and a reset elastic element provide support and reset functions. A linkage plate enables the swing plate and the pushing mechanism sliding plate to move in tandem. The pushing mechanism can precisely control the movement of the circuit breaker body. This design prevents misoperation during closing, avoids dangerous arcing, improves equipment safety and reliability, extends service life, and reduces maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of technology, and in particular to a tripping interlocking mechanism for a universal circuit breaker drawbar. Background Technology

[0002] The drawer frame (also known as drawer base or frame) of a universal circuit breaker is a core component of a withdrawable circuit breaker, designed to enable convenient installation, maintenance, testing and isolation of the circuit breaker; Modular design: The circuit breaker body can be inserted or pulled out like a drawer without disassembling the wiring, simplifying the installation and maintenance process; Reduce power outage time: When replacing or repairing a circuit breaker, only the main body needs to be pulled out, without disconnecting the wiring of the main circuit or control circuit, which greatly shortens the power outage time; Multiple operating positions can be achieved: Connection position (operating position): The main circuit and control circuit of the circuit breaker are fully connected, and it can be opened and closed normally; Test location: The main circuit of the circuit breaker is disconnected, but the control circuit is fully connected, so that safe opening and closing tests and protection function debugging can be carried out normally; Disconnected position (open position): The circuit breaker is completely disconnected from the power supply, and the body can be safely pulled out for easy replacement and maintenance; Enhanced safety: Reliable electrical isolation: Sufficient safety distance exists between the circuit breaker terminals and the frame contacts in both the test and disconnect positions to ensure complete de-energization of the main circuit; Interlocking protection: The drawer is automatically grounded when in the separated position to prevent the risk of residual charge; However, in actual use, the drawer-type universal circuit breaker must be in the open state before the circuit breaker body can be drawn out. If the circuit breaker body is drawn out or drawn in while in the closed state, the circuit breaker terminals and drawer contacts will separate or make contact under load current, which will generate an extremely dangerous electric arc, which may cause serious phase-to-phase short circuits, electric shock accidents, burn out contacts, cause permanent damage to equipment, or even cause fire or explosion.

[0003] Conventional protective devices, such as sliding locking mechanisms, provide protection by locking the insertion of the operating handle. They have a simple structure and are susceptible to mechanical damage. Electronic protective devices, on the other hand, are at risk of electronic signal failure.

[0004] Therefore, we propose a universal circuit breaker drawbar tripping interlocking mechanism.

[0005] Application content Therefore, it is necessary to provide a tripping interlocking mechanism for a universal circuit breaker drawer to address the technical problem that dangerous arcs may occur when the circuit breaker body is drawn out or drawn in during the closed state, potentially leading to serious safety accidents. This mechanism ensures that the circuit breaker body can only be safely drawn in or out during the open state, effectively preventing the generation of dangerous arcs and improving the safety and reliability of the equipment.

[0006] This application discloses a universal circuit breaker drawer interlocking mechanism, comprising a circuit breaker drawer, which is a box-shaped structure with a receiving space and an opening; a circuit breaker body, which is removably disposed within the receiving space of the circuit breaker drawer; an interlocking mechanism disposed within the circuit breaker drawer for detecting the open / closed state of the circuit breaker body and restricting its movement when the circuit breaker body is in the closed state; and a pushing mechanism disposed on the circuit breaker drawer for driving the circuit breaker body to move within the circuit breaker drawer; wherein the interlocking mechanism and the pushing mechanism are interconnected, so that the circuit breaker body can only be driven to move by the pushing mechanism when it is in the open state. This design, through the interconnection of the interlocking mechanism and the pushing mechanism, ensures that the circuit breaker body can only be driven to move when it is in the open state, thereby preventing misoperation when it is in the closed state, avoiding the generation of dangerous arcs, improving the safety and reliability of the equipment, extending the service life of the equipment, and reducing maintenance costs.

[0007] In other embodiments, the interlocking mechanism includes a base, an interlocking top block, and a linkage slide plate; the base is fixed within the circuit breaker drawer; the interlocking top block is movably disposed on the base along a third direction and has a first end for engaging with a locking block on the circuit breaker body; the linkage slide plate is slidably disposed on the base along a first horizontal direction and interacts with the interlocking top block to control the raising and lowering of the interlocking top block according to the opening and closing state of the circuit breaker body. This design enables the interlocking mechanism to accurately control the raising and lowering of the interlocking top block according to the opening and closing state of the circuit breaker body, thereby effectively limiting the movement of the circuit breaker body and improving the reliability and stability of the interlocking mechanism.

[0008] In other embodiments, the interlocking mechanism further includes a locking operation button; the locking operation button is connected to the linkage slide plate via a second linkage assembly and is used to drive the linkage slide plate to slide during operation. The locking operation button provides operators with a convenient manual control method. Through the connection between the second linkage assembly and the linkage slide plate, the linkage slide plate can be quickly driven to slide, thereby achieving control of the interlocking top block and improving the convenience of operation and the response speed of the interlocking mechanism.

[0009] In other embodiments, a mounting cover is provided on the open side of the circuit breaker drawer, and a locking slide plate movable in a first horizontal direction is provided inside the mounting cover; the interlocking top block has a second end extending into the moving path of the locking slide plate, and the second end of the interlocking top block and the locking slide plate form an interlocking structure. The mounting cover protects the internal components, and the interlocking structure formed by the locking slide plate and the interlocking top block increases the safety and reliability of the interlocking mechanism, effectively preventing the circuit breaker body from being drawn out in the closed state, thus avoiding dangerous situations.

[0010] In other embodiments, a limiting block is provided on the linkage slide plate, and the pushing mechanism includes a handle shaft with a limiting structure that cooperates with the limiting block. The limiting block on the linkage slide plate cooperates with the limiting structure on the handle shaft of the pushing mechanism to limit the sliding range of the linkage slide plate and the rotation of the handle shaft, ensuring that the linkage slide plate slides within a predetermined range and preventing equipment damage or operational errors caused by excessive sliding. Simultaneously, the limiting structure also has a buffering function, improving the stability and reliability of the equipment.

[0011] In other embodiments, the linkage slide plate is provided with a movable connector, and the interlocking top block is provided with a groove corresponding to the connector. When the connector is inserted into the groove, the downward movement of the interlocking top block is restricted. The sliding groove and connector make the connection between the linkage slide plate and the interlocking top block more flexible and reliable. When it is necessary to restrict the downward movement of the interlocking top block, the movement of the linkage slide plate causes the connector to be inserted into the groove on the interlocking top block, thereby fixing the interlocking top block and further improving the safety of the interlocking mechanism, preventing safety accidents caused by misoperation.

[0012] In other embodiments, the interlocking mechanism further includes a support base, a swing plate, and a reset elastic element. The support base is disposed on the base, and the linkage slide plate is slidably connected to the support base via a sliding connector. The swing plate is swingably disposed between the support base and the linkage slide plate. The reset elastic element is connected between the swing plate and the base, providing an elastic force to reset the linkage slide plate. The configuration of the support base, swing plate, and reset elastic element provides stable support and reset functions for the interlocking mechanism. The support base provides sliding support for the linkage slide plate, the swing plate interacts with the linkage slide plate through swinging, and the reset elastic element provides an elastic force to enable the linkage slide plate to quickly reset after operation, ensuring the continuous and reliable operation of the interlocking mechanism.

[0013] In other embodiments, a linkage plate is also included, which is movably disposed along a second horizontal direction. One end of the linkage plate abuts against the lower end of the swing plate, and the other end is connected to the slide plate of the pushing mechanism to move synchronously with the slide plate. The linkage plate enables linkage between the swing plate and the slide plate of the pushing mechanism. When the slide plate moves, the linkage plate moves synchronously, thereby driving the swing plate to swing. This design ensures the coordinated work between the pushing mechanism and the interlocking mechanism, improving the overall stability and reliability of operation.

[0014] In other embodiments, the linkage plate is provided with multiple protrusions that engage with the lower end of the swing plate. The multiple protrusions on the linkage plate engage with the lower end of the swing plate, and the linkage plate moves synchronously in the second direction with the rack portion, lifting the swing plate at the corresponding protrusions to reset the swing plate. The locking operation button is automatically reset when the circuit breaker is in the disconnect, test, or connection positions.

[0015] In other embodiments, the pushing mechanism includes a sliding plate, a transmission screw, and a handle shaft. The sliding plate is slidably disposed within the circuit breaker drawer along a second horizontal direction. The transmission screw is threadedly connected to the sliding plate. The handle shaft is driven by the transmission screw and receives external operating torque to drive the transmission screw to rotate. The sliding plate is provided with a rack portion, which meshes with a gear. The shaft of the gear is connected to the placement bracket of the circuit breaker body to convert the linear motion of the sliding plate into the linear movement of the circuit breaker body. This design achieves precise control and efficient transmission of the pushing mechanism. The sliding plate provides support for the movement of the circuit breaker body. The transmission screw achieves linear movement of the sliding plate through rotation. The handle shaft receives external operating torque to drive the transmission screw to rotate. The meshing of the rack portion and the gear converts the linear motion of the sliding plate into the linear movement of the placement bracket of the circuit breaker body, making the movement of the circuit breaker body more precise and controllable, and facilitating operation by staff. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of a local part of the structure.

[0018] Figure 3 for Figure 2 A structural diagram from another perspective.

[0019] Figure 4 for Figure 3 A schematic diagram of a local part of the structure.

[0020] Figure 5 for Figure 4 Top view.

[0021] Figure 6 for Figure 5 A sectional view of section AA in the middle.

[0022] Figure 7 This is a schematic diagram of the interlocking top block in this invention.

[0023] Figure 8 This is a schematic diagram of the linkage plate in this invention.

[0024] in: 1. Circuit breaker drawer; 11. Opening; 12. Mounting cover; 2. Circuit breaker body; 21. Locking block; 22. First linkage assembly; 3. Interlocking mechanism; 31. Base; 32. Interlocking top block; 321. Groove; 322. First end; 323. Second end; 33. Linkage slide plate; 331. Limiting top block; 332. Connector; 34. Locking operation button; 35. Second linkage assembly; 36. Support base; 37. Swing plate; 38. Reset elastic element; 39. Locking slide plate; 391. Position indicator arrow; 310. Linkage plate; 311. Protrusion 4. Pushing mechanism; 41. Slide plate; 411. Rack and pinion section; 42. Lead screw; 43. Handle shaft; 431. Limiting structure; 44. Gear; 441. Shaft. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "third-party below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature in a third-party direction, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] like Figures 1-8 As shown, this embodiment discloses a tripping interlocking mechanism for a universal circuit breaker drawer, including a circuit breaker drawer 1, a circuit breaker body 2, an interlocking mechanism 3, and a pushing mechanism 4, which is used to realize the safe operation and precise control of the circuit breaker body 2 within the drawer.

[0032] The circuit breaker drawer 1 in this embodiment is a box-shaped structure with accommodating space and an opening 11 in the second direction. The box-shaped structure provides a stable installation space for the circuit breaker body 2, and the opening in the second direction facilitates the insertion and removal of the circuit breaker body 2 in a specific direction, making the installation and maintenance process more convenient and efficient. It also provides a reasonable spatial layout for the installation of subsequent components such as the interlocking mechanism 3 and the pushing mechanism 4.

[0033] In this embodiment, the circuit breaker body 2 is removably disposed within the receiving space of the circuit breaker drawer 1. It is inserted into the drawer 1 in a direction perpendicular to the opening 11, ensuring a tight and stable connection between the circuit breaker body 2 and the drawer 1. This prevents loosening during operation, ensuring the reliability of the circuit breaker and facilitating quick installation and removal of the circuit breaker body 2, thus improving work efficiency. The removable design of the circuit breaker body 2 allows for rapid replacement or maintenance when needed. This design not only improves the maintainability of the circuit breaker but also reduces power outage time due to faults, thereby enhancing the overall reliability of the power system.

[0034] In this embodiment, the interlocking mechanism 3 is installed within the circuit breaker drawer 1 and positioned below the circuit breaker body 2 in the third direction of its movement path. It detects the open / closed state of the circuit breaker body 2 and restricts its movement when it is closed, thus controlling and locking the circuit breaker body 2. Positioning the interlocking mechanism 3 below the circuit breaker body 2 in the third direction of its movement path makes full use of space and allows for more direct control of the circuit breaker body 2's movement. Through the interlocking mechanism 3, the movement of the circuit breaker body 2 in abnormal states can be effectively prevented, allowing it to be withdrawn without being open, thereby avoiding dangerous situations and improving equipment safety. This design effectively improves the operational safety of the circuit breaker, protecting the safety of operators and equipment. Simultaneously, the interlocking mechanism 3 also has a self-locking function, ensuring that the circuit breaker body 2 will not be accidentally closed during movement.

[0035] In this embodiment, the pushing mechanism 4 is mounted on the bottom wall of the circuit breaker drawer 1 and is on the same horizontal plane as the interlocking mechanism 3. It drives the circuit breaker body 2 to move within the circuit breaker drawer 1. This arrangement makes the entire mechanism more compact and efficient. The pushing mechanism 4 drives the circuit breaker body 2 to move within the drawer, enabling rapid insertion and removal of the circuit breaker. This design not only improves the operating efficiency of the circuit breaker but also reduces the workload of the operators. Furthermore, the pushing mechanism 4 has a precise positioning function, ensuring that the circuit breaker body 2 accurately reaches the predetermined position during movement.

[0036] The interlocking mechanism 3 and the pushing mechanism 4 are interconnected, ensuring that the circuit breaker body 2 can only be moved by the pushing mechanism 4 when the circuit breaker is in the open state. This interlocking design ensures that the circuit breaker body 2 can only be moved by the pushing mechanism 4 when the circuit breaker is in the open state, thus preventing misoperation when the circuit breaker is closed. This design not only improves the operational safety of the circuit breaker but also extends the service life of the equipment.

[0037] The pushing mechanism 4 is equipped with a sliding plate 41 that slides in the circuit breaker drawer 1 along the second direction. A lead screw structure is inserted into the sliding plate 41, and a handle shaft 43 is provided at the other end of the lead screw structure. The handle shaft 43 has a through hole that mates with the handle. After the handle is inserted into the handle shaft 43, it can drive the handle shaft 43 to rotate. The sliding plate 41 is provided with a toothed groove, and a gear 44 is provided on the toothed groove. A shaft 441 is inserted into the center of the gear 44, and the shaft 441 extends to both sides of the circuit breaker drawer 1. The rotation of the shaft 441 controls the movement of the circuit breaker body 2 in the second direction. The sliding of the sliding plate 41 in the second direction and the cooperation of the lead screw structure, handle shaft 43 and other components realize the movement of the sliding plate 41 by rotating the handle, and then control the movement of the circuit breaker body 2 in the second direction through the transmission of the gear 44 and the shaft 441. This design makes the movement of the circuit breaker body 2 more precise and controllable, facilitating operation by staff. When it is necessary to introduce or withdraw the circuit breaker body 2, its movement can be smoothly controlled by rotating the handle, avoiding equipment damage or safety accidents caused by improper operation. The detailed structural design of the pushing mechanism 4 includes a sliding plate 41, a transmission screw 42, and a handle shaft 43. The sliding plate 41 is slidably mounted in the circuit breaker drawer 1 along the second horizontal direction, providing support for the movement of the circuit breaker body 2. The transmission screw 42 is threadedly connected to the sliding plate 41, and the linear movement of the sliding plate 41 is achieved by rotation. The handle shaft 43 is driven by the transmission screw 42, receiving external operating torque to drive the transmission screw 42 to rotate. The sliding plate 41 is provided with a rack part 411, which meshes with a gear 44, converting the linear motion of the sliding plate 41 into the linear movement of the circuit breaker body 2. This design achieves precise control and efficient transmission of the pushing mechanism 4.

[0038] The circuit breaker body 2 is equipped with a locking block 21 that moves in a third direction. The locking block 21 is connected to the circuit breaker body 2 via a first linkage assembly 22. A trip button for controlling the movement of the first linkage assembly 22 is also provided on the circuit breaker body 2. The first linkage assembly 22, through linkage cooperation, drives the locking block 21 to move up and down. The movement of the locking block 21 in the third direction allows it to effectively cooperate with other components in the interlocking mechanism 3, realizing the interlocking control function. When the circuit breaker body 2 is in different states, the movement of the locking block 21 can trigger or release the restriction of the interlocking mechanism 3, thereby ensuring that the circuit breaker body 2 can only operate in a state that meets safety requirements, further enhancing the safety of the equipment.

[0039] The interlocking mechanism 3 includes a base 31 fixedly connected to the circuit breaker drawer 1, and a sliding plate slidably connected to the upper end of the base 31 along a first direction. The base 31 has an interlocking top block 32 that moves along a third direction. A return spring is connected between the interlocking top block 32 and the base 31. Under elastic force, the interlocking top block 32 abuts against the lower end of the locking block 21. The interlocking top block 32 has a first end 322 that cooperates with the locking block 21. When the locking block 21 is in the lower position, it presses the interlocking top block 32 into the lower position. At this time, the second end 323 on the interlocking top block 32 restricts the locking plate 39 from moving to the left in the first direction, thereby restricting the insertion of the handle. The base 31 is fixedly connected to the circuit breaker drawer 1, providing stable support for the entire interlocking mechanism 3. The sliding plate slides along the first direction and can move according to different operating states, thereby controlling the interlocking top block 32. The interlocking top block 32 abuts against the lower end of the locking block 21 under elastic force. This design allows the interlocking top block 32 to automatically adjust its position according to the state of the locking block 21. When the locking block 21 tends to move, the interlocking top block 32 will provide a corresponding reaction force under the action of elastic force, thereby restricting the movement of the locking block 21 and realizing the interlocking control of the circuit breaker body 2. When the circuit breaker body 2 is not open, the locking block 21 is in a specific position, and the interlocking top block 32 abuts against the locking block 21 under the action of elastic force to prevent it from moving, thus preventing the circuit breaker body 2 from being pulled out in the closed state. The detailed structural design of the interlocking mechanism 3 includes a base 31, an interlocking top block 32, and a linkage slide plate 33. The base 31 serves as a support component and is fixed inside the circuit breaker drawer 1. The interlocking top block 32 cooperates with the locking block 21 on the circuit breaker body 2 through third-direction movement. The linkage slide 33 interacts with the interlocking top block 32 through horizontal sliding, controlling its lifting and lowering according to the opening and closing state of the circuit breaker body 2. This design ensures the reliability and stability of the interlocking mechanism 3.

[0040] The interlocking mechanism 3 also includes a locking operation button 34. The locking operation button 34 is connected to the linkage slide plate 33 via a second linkage assembly 35, and is used to drive the linkage slide plate 33 to slide during operation. The locking operation button 34 provides operators with a convenient manual control method. Through the connection between the second linkage assembly 35 and the linkage slide plate 33, the operation button can drive the linkage slide plate 33 to slide, thereby controlling the interlocking top block 32. This design not only improves the ease of operation but also ensures that the interlocking mechanism 3 can respond quickly when needed.

[0041] The base 31 has at least two through holes on its side wall in the second direction. One through hole connects to a locking operation button 34, and the other end of the locking operation button 34 is connected to a linkage slide plate via a second linkage assembly. The other through hole connects to the push mechanism 4 via an inserted handle, controlling the rotation of the lead screw. Multiple through holes on the side wall of the base 31 are used to connect the locking operation button 34 and the handle, respectively. This design allows each operating component to be rationally installed on the interlocking mechanism 3, and through the connection of components such as the second linkage assembly, the transmission and conversion of operating signals are realized. The locking operation button 34 is connected to the linkage slide plate via the second linkage assembly. When the locking operation button 34 is pressed, the linkage slide plate is moved via the second linkage assembly, thereby triggering other actions of the interlocking mechanism 3. The connection between the handle and the push mechanism 4 allows control of the rotation of the lead screw in the push mechanism 4, thereby controlling the movement of the circuit breaker body 2. This design makes operation more convenient and intuitive. For example, when it is necessary to lock the circuit breaker body 2 in the open state, pressing the locking operation button 34 pushes the linkage slide plate to move through the second linkage assembly, thereby triggering the action of other components of the interlocking mechanism 3 to lock the circuit breaker body 2. The locking operation button 34 is in a pressed state axially, at which point the linkage slide plate is pushed to the right through the second linkage assembly. When the locking operation button 34 is pressed, its axial movement is transmitted to the linkage slide plate through the second linkage assembly, pushing the linkage slide plate to the right. This design allows the operator to trigger a series of actions of the interlocking mechanism 3 with a simple button press, making operation convenient and quick. At the same time, the design of the second linkage assembly ensures accurate and reliable force transmission, ensuring that the linkage slide plate moves in the expected manner, thus realizing the interlocking control function.

[0042] The circuit breaker drawer 1 has a mounting cover 12 on one side of the opening 11. Inside the mounting cover 12 is a mating hole corresponding to the through hole. Inside the mounting cover 12 is a locking slide plate 39 that moves in a first direction. The locking slide plate 39 has a mating hole corresponding to the through hole. The mounting cover 12 protects the internal components, preventing damage to the interlocking mechanism 3 and other components from external factors. The mating hole corresponds to the through hole, facilitating the insertion and connection of components such as the handle. The locking slide plate 39 moves in the first direction and has a mating hole corresponding to the through hole. This design allows the locking slide plate 39 to move according to different operating states. When the handle is inserted, the locking slide plate 39 can move to the appropriate position, allowing the handle to rotate.

[0043] One side of the interlocking top block 32 extends onto the moving path of the locking slide plate 39, forming an interlocking structure. The interlocking top block 32 is provided with a second end 323 extending toward the locking slide plate 39 in a second direction, and the locking slide plate 39 is provided with a limiting device that cooperates with the second end 323. The locking slide plate 39 can lock the handle to prevent it from being inserted, thereby achieving further control over the movement of the circuit breaker body 2. When the circuit breaker body 2 is not in the correct state, the locking slide plate 39 will block the hole for inserting the operating handle, preventing it from being inserted and avoiding equipment damage or safety accidents due to misoperation. The interlocking top block 32 extends onto the moving path of the locking slide plate 39 and forms an interlocking structure. This design increases the safety and reliability of the interlocking mechanism 3. When the interlocking top block 32 and the locking slide 39 are in a specific position, they are locked together and can only be unlocked under certain conditions. When the circuit breaker body 2 is not open, the interlocking top block 32 is in a specific position and interlocks with the locking slide 39. At this time, even if an external force attempts to insert the operating handle, the locking slide 39 will be blocked by the interlocking top block 32 and cannot move, thus preventing the circuit breaker body 2 from being pulled out in the closed state. Only when the circuit breaker body 2 is opened, the interlocking top block 32 moves, releasing the interlock with the locking slide 39, and the handle can be inserted normally to realize the operation of pulling out the circuit breaker body 2.

[0044] The linkage slide plate is also provided with a limiting top block 331 extending towards the handle rotation shaft 43, and a plurality of corresponding annularly distributed limiting structures 431 are provided on the handle rotation shaft 43. The limiting top block 331 on the linkage slide plate 33 cooperates with the limiting structures 431 on the handle rotation shaft 43 of the pushing mechanism 4 to limit the sliding range of the linkage slide plate 33 and the rotation of the handle rotation shaft 43. The limiting top block 331 extends towards the handle rotation shaft 43, and the handle rotation shaft 43 is provided with a plurality of annularly distributed limiting structures 431. This design allows the linkage slide plate to precisely control the rotation of the handle rotation shaft 43. When the linkage slide is in different positions, the limiting block 331 will cooperate with different limiting structures 431 on the handle shaft 43, thereby limiting the rotation range of the handle shaft 43 or completely preventing its rotation. When the locking operation button 34 is not pressed, the limiting block 331 is stuck in a certain limiting structure, and the handle shaft 43 cannot rotate. When the locking operation button 34 is pressed, the linkage slide moves, the limiting block 331 moves out of the limiting structure, and the handle shaft 43 can rotate, thereby realizing the interlocking control of the handle rotation and further ensuring the safety of equipment operation. This design ensures that the linkage slide 33 slides within a predetermined range, preventing equipment damage or operational errors caused by excessive sliding. At the same time, the limiting structure also has a buffering function.

[0045] The linkage slide plate is provided with a sliding groove, and a connector 332 is provided in the sliding groove. A groove 321 corresponding to the connector 332 is provided on the interlocking top block 32. When the connector 332 is inserted into the groove 321, it restricts the downward movement of the interlocking top block 32. The sliding groove and connector 332 make the connection between the linkage slide plate and the interlocking top block 32 more flexible and reliable. When it is necessary to restrict the downward movement of the interlocking top block 32, the movement of the linkage slide plate causes the connector 332 to be inserted into the groove 321 on the interlocking top block 32, thereby fixing the interlocking top block 32. The movable connector 332 on the linkage slide plate 33 cooperates with the groove 321 on the interlocking top block 32 to restrict the downward movement of the interlocking top block 32. When the connector 332 is inserted into the groove 321, the interlocking top block 32 cannot descend, thus ensuring that the circuit breaker body 2 cannot move in the closed state. This design further improves the safety of the interlocking mechanism 3 and prevents safety accidents caused by misoperation.

[0046] A support base 36 is attached to the side wall of the linkage slide plate near the second link structure. The support base 36 has two grooves arranged along the first direction, and sliding bolts connecting the linkage slide plate and the support base 36 are installed within these grooves. A swing plate 37 is connected between the support base 36 and the linkage slide plate. The swing plate 37 has a rotating hole and an arc-shaped groove, and the sliding bolts are respectively connected to the rotating hole and the arc-shaped groove. The end of the swing plate 37 away from the second link is connected to the base 31 by a spring. The design of the support base 36, grooves, sliding bolts, and swing plate 37 constitutes a complex mechanical structure that provides stable support and precise guidance for the movement of the linkage slide plate. The movement of the sliding bolts within the grooves allows the linkage slide plate to move smoothly along the first direction, while the interaction between the rotating hole and the arc-shaped groove on the swing plate 37 and the sliding bolts allows the swing plate 37 to swing accordingly based on the movement of the linkage slide plate. A spring connects the swing plate 37 and the base 31, providing elastic force to the entire structure. This allows the linkage slide plate to automatically reset after movement, while also increasing the stability and reliability of the structure. For example, when the linkage slide plate moves to the right under the action of the second linkage assembly, the sliding bolt moves within the groove, the swing plate 37 swings around the rotating hole, and the spring is stretched. When the external force disappears, the spring force will reset the swing plate 37, thereby driving the linkage slide plate to move to the left and return to its initial position. The interlocking mechanism 3 also includes a support base 36, a swing plate 37, and a reset elastic element 38. The support base 36 is mounted on the base 31, and the linkage slide plate 33 is slidably connected to the support base 36 via a sliding connector. The swing plate 37 is swingably mounted between the support base 36 and the linkage slide plate 33. The reset elastic element 38 is connected between the swing plate 37 and the base 31 to provide elastic force for the linkage slide plate 33 to reset. The support base 36, the swing plate 37, and the reset elastic element 38 provide stable support and reset functions for the interlocking mechanism 3. The support base 36 is fixed to the base 31, providing sliding support for the linkage slide plate 33. The swing plate 37 is swingably disposed between the support base 36 and the linkage slide plate 33, and interacts with the linkage slide plate 33 through swinging. The reset elastic element 38 provides elastic force, so that the linkage slide plate 33 can quickly reset after operation, ensuring the continuous and reliable operation of the interlocking mechanism 3.

[0047] The lower end of the swing plate 37 abuts against a plug-in piece that moves in the second direction. The plug-in piece has multiple protrusions 311 that mate with the swing plate 37. The plug-in piece is connected to the slide plate 41 via a connector and moves with the slide plate 41. The abutment between the plug-in piece and the swing plate 37, along with the engagement of the protrusions 311, allows the movement of the plug-in piece to affect the state of the swing plate 37, thereby affecting the movement of the linkage slide plate. The plug-in piece is connected to the slide plate 41 via a connector and can move in the second direction as the slide plate 41 moves. When the slide plate 41 moves, it moves the plug-in piece. The protrusions 311 on the plug-in piece interact with the swing plate 37, causing the swing plate 37 to reset, which in turn causes the linkage slide plate to move to the right. To continue withdrawing the circuit breaker body 2, the locking operation button 34 needs to be pressed multiple times, improving overall safety. This achieves linkage control between the slide plate 41 and the linkage slide plate, enabling the entire interlocking mechanism 3 to work more harmoniously. For example, when the slide plate 41 moves under the action of the pushing mechanism 4, the oscillating plate 37 swings through the plug-in piece, thereby affecting the position of the linkage slide plate and achieving further control of the interlocking mechanism 3, ensuring that the circuit breaker body 2 is always in a safe state during movement. It also includes a linkage piece 310, which is movably arranged along the second horizontal direction. One end of the linkage piece 310 abuts against the lower end of the oscillating plate 37, and the other end is connected to the slide plate 41 of the pushing mechanism 4, so as to move synchronously with the slide plate 41. The linkage piece 310 realizes the linkage between the oscillating plate 37 and the slide plate 41 of the pushing mechanism 4. The linkage piece 310 is movably arranged along the second horizontal direction, with one end abutting against the lower end of the oscillating plate 37 and the other end connected to the slide plate 41. When the slide plate 41 moves, the linkage piece 310 moves synchronously, thereby driving the oscillating plate 37 to swing. This design ensures the coordinated work between the pushing mechanism 4 and the interlocking mechanism 3, improving the overall stability and reliability of operation. The linkage piece 310 is provided with multiple protrusions 311 that cooperate with the lower end of the oscillating plate 37. Multiple protrusions 311 on the linkage plate 310 engage with the lower end of the swing plate 37, increasing the contact area and friction, thus ensuring stable transmission between the linkage plate 310 and the swing plate 37. Simultaneously, the protrusions 311 also provide a buffering function, reducing the impact force between the linkage plate 310 and the swing plate 37 and extending the service life of the equipment.

[0048] In this embodiment, the specific working principle is as follows: The interlocking top block 32 can move up and down, and is in the "upper position" when not activated; the handle shaft 43 can rotate (inside the handle hole, rotates with the operator's handle); the locking slide plate 39 can move left and right, and is locked in the handle shaft 43 when not activated; the limit top block 331 can move left and right; the locking operation button 34 is a button that drives the internal linkage; the swing plate 37 can swing up and down; the linkage slide plate 33 moves left and right with the button, and is in the "left position" when the button is popped out, and in the right position when the button is pressed; the circuit breaker body 2 is in the lower position when the trip button is not pressed, and in the upper position when the trip button is pressed.

[0049] When the circuit breaker body 2 is not placed inside the circuit breaker drawer 1, the interlocking top block 32 is in the upper position and can move freely (without locking). In this situation, since the circuit breaker body 2 is not inside the circuit breaker drawer 1, there is no risk of dangerous arcing due to misoperation, so the interlocking top block 32 is in a free state and does not perform locking operation. This design meets practical usage requirements, avoids unnecessary restrictions, and improves operational flexibility. At the same time, it also prepares for interlocking control when the circuit breaker body 2 is subsequently introduced into the circuit breaker drawer 1. When the circuit breaker body 2 is introduced, the interlocking top block 32 will change its state according to the actions of other components, achieving safe control of the circuit breaker body 2.

[0050] When the circuit breaker body 2 is not placed inside the circuit breaker drawer 1, the circuit breaker linkage is in the lower position. When the trip button of the circuit breaker body 2 mechanism is pressed, the circuit breaker linkage moves upward through the linkage mechanism. Pressing the trip button to move the circuit breaker linkage upward is the key operation to put the circuit breaker body 2 into the tripped state. In the tripped state, the circuit breaker contacts are separated, and the main circuit is disconnected. At this time, it is safe to perform the lead-in or lead-out operation of the circuit breaker body 2. The linkage mechanism transmits the action of the trip button to the circuit breaker linkage, realizing the mechanical transmission of the operation. This allows the operator to control the tripped state of the circuit breaker with simple button operation, improving the convenience and reliability of operation.

[0051] When the circuit breaker body 2 is placed into the circuit breaker drawer 1, it is in the disengaged position. The linkage slide 33 presses the interlocking top block 32 downwards, and the interlocking top block 32 restricts the leftward movement of the locking slide 39, preventing the handle of the circuit breaker drawer 1 from being inserted into the handle hole. Simultaneously, because the interlocking top block 32 is in the downward position, it restricts the rightward movement of the linkage slide 33, preventing the locking operation button 34 from being pressed. When the circuit breaker body 2 is placed in the circuit breaker drawer 1 in the disengaged position, the interaction between the linkage slide 33 and the interlocking top block 32 triggers a series of chain reactions. The linkage slide 33 presses the interlocking top block 32 downwards, and the change in the position of the interlocking top block 32 restricts the movement of the locking slide 39, thus preventing the handle of the circuit breaker drawer 1 from being inserted into the handle hole, avoiding accidental movement of the circuit breaker body 2 due to accidental operation of the handle in the disengaged position. At the same time, the downward position of the interlocking top block 32 also restricts the rightward movement of the linkage slide 33, preventing the locking operation button 34 from being pressed, further ensuring the safety of the equipment. This interlocking control mechanism forms a robust safety protection system through the interaction between multiple components, preventing improper operation of the circuit breaker body 2 when it is not in operation.

[0052] When the operator performs the circuit breaker body 2 input operation, the trip button must be pressed to move the circuit breaker linkage upward to the upper position. The interlocking top block 32 will naturally move upward by the reset elastic element 38 to the upper position. At this time, the restriction of the limit top block 331 is released, and as the operator inserts the handle of the circuit breaker drawer 1, the locking slide plate 39 will naturally move to the left. (Pressing the trip button moves the circuit breaker linkage upwards to the upper position, a prerequisite for introducing the circuit breaker body 2. Only when the circuit breaker is in the tripped state can the circuit breaker body 2 be safely introduced into the circuit breaker drawer 1. The interlocking top block 32 naturally moves upwards under the action of the spring mechanism, returning to its initial "upper position." At this time, the restriction of the limit block 331 is released, providing conditions for subsequent operations. After the operator inserts the handle of the circuit breaker drawer 1, the locking slide 39 naturally moves to the left. This is because the insertion of the handle changes the force state of the locking slide 39, allowing it to move freely, preparing for the rotation of the handle and the movement of the circuit breaker body 2. This series of operational steps are interconnected, ensuring the safety and smooth progress of the circuit breaker body 2 introduction operation.) As described above, the handle of circuit breaker drawer 1 is inserted normally, but it is still not allowed to be turned. The linkage plate 33 restricts the rotation of the handle shaft 43. The operator must press the locking operation button 34, which moves the linkage plate 33 to the right. At the same time, the pin (plug 332 or similar structure) of the linkage plate 33 is inserted into the interlocking top block 32, which will be restricted to downward movement. At this time, the circuit breaker body 2 connecting rod will also be restricted to downward movement. When the locking operation button 34 is in the pressed position, the circuit breaker connecting rod is in the upper position throughout the entire process, which means that the circuit breaker body 2 is mechanically locked in the open state throughout the entire process. At the same time, the restriction of the linkage plate 33 on the handle shaft 43 is also released, and the handle rotation operation can be performed, allowing the circuit breaker body 2 to be introduced into the circuit breaker drawer 1. During the introduction of the circuit breaker body 2, although the handle of circuit breaker drawer 1 has been inserted, it is still not allowed to be turned for safety. By restricting the rotation of the handle shaft 43 via the linkage slide 33, improper operation of the circuit breaker body 2 is prevented when conditions are not met. After pressing the lockout button 34, the linkage slide 33 moves to the right, its pin inserting into the interlocking top block 32, restricting the downward movement of the interlocking top block 32, and consequently restricting the downward movement of the circuit breaker linkage, thus mechanically locking the circuit breaker body 2 in the open state throughout the entire process. Simultaneously, the restriction on the handle shaft 43 by the linkage slide 33 is released, allowing the handle to rotate, thereby enabling the circuit breaker body 2 to be introduced into the circuit breaker drawer 1. This design, through an interlocking control mechanism, ensures that every step in the introduction of the circuit breaker body 2 is performed safely, avoiding safety accidents caused by misoperation.

[0053] When the button 34 is pressed, the pop-out mechanism (including the swing plate 37, reset elastic element 38, etc.) is responsible for maintaining the button's state. When the pop-out mechanism is in the upward swing position, the button remains pressed; when the pop-out mechanism is in the downward swing position, the button pops out. Due to the slider toothed design (the rack part 411 of the slide plate 41 may participate), the pop-out mechanism is automatically pulled downward by the spring mechanism (reset elastic element 38, etc.) only when the circuit breaker body 2 is led out to a specific position (connection position, test position, disconnection position), thus enabling the button 34 to pop out at that specific position and ensuring the accuracy of the circuit breaker body 2 in each position. The design of the pop-out mechanism provides a reliable way to maintain the button's state. When the button is pressed, the pop-out mechanism is in the upward swing position, which can maintain the button's pressed state, ensuring that the interlocking mechanism continues to function and keeping the circuit breaker body 2 in the open state. When the circuit breaker body 2 is led out to a specific position, the pop-out mechanism automatically swings downward under the action of the spring mechanism, causing the button to pop out, releasing the interlocking mechanism and allowing the circuit breaker body 2 to perform the corresponding operation. The design of the slider tooth groove allows the ejection mechanism to operate accurately according to the position of the circuit breaker body 2, ensuring the accuracy of the circuit breaker body 2 in each position. This design improves the automation level and operational accuracy of the equipment, and reduces the possibility of human error.

[0054] The above description pertains to the introduction operation of the circuit breaker body 2. The withdrawal operation follows the same principle. This shared principle signifies that the tripping interlocking mechanism 3 possesses symmetry and reversibility. Whether introducing or withdrawing the circuit breaker body 2 from the circuit breaker drawer 1, the same interlocking control principle applies, ensuring operational safety and accuracy through the interaction between various components. This design eliminates the need for operators to learn and master different operating methods, reducing operational difficulty and improving work efficiency. Furthermore, it demonstrates the scientific and rational design of the mechanism, meeting various practical application requirements.

[0055] In summary, the tripping interlocking mechanism 3 of this universal circuit breaker drawer 1 forms a robust safety protection system through the complex interaction of multiple components. This effectively prevents the circuit breaker body 2 from being introduced or withdrawn when not in a tripped state, avoiding the generation of dangerous electric arcs and improving the safety and reliability of the equipment. Furthermore, the design of this mechanism also considers ease of operation and accuracy. Through a reasonable mechanical structure and interlocking control mechanism, operators can easily and accurately perform the introduction and withdrawal operations of the circuit breaker body 2, reducing power outage time, improving work efficiency, and demonstrating significant beneficial effects and practical application value.

[0056] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A tripping interlocking mechanism for a universal circuit breaker drawbar, characterized in that, include: The circuit breaker drawer is a box-shaped structure with a storage space and an opening. The circuit breaker body is removably disposed within the receiving space of the circuit breaker drawer. An interlocking mechanism, which is installed inside the circuit breaker drawer, is used to detect the open and closed state of the circuit breaker body and restrict its movement when the circuit breaker body is in the closed state. A pushing mechanism, which is disposed on the circuit breaker drawer, is used to drive the circuit breaker body to move within the circuit breaker drawer; The interlocking mechanism and the pushing mechanism are linked together, so that the circuit breaker body can only be driven to move by the pushing mechanism when it is in the open state.

2. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 1, characterized in that, The interlocking mechanism includes a base, an interlocking top block, and a linkage sliding plate; The base is fixed inside the circuit breaker drawer; The interlocking top block is movably disposed on the base along a third direction and has a first end for engaging with a locking block on the circuit breaker body; The linkage slide plate is slidably disposed on the base along the first horizontal direction and interacts with the interlocking top block to control the lifting and lowering of the interlocking top block according to the opening and closing state of the circuit breaker body.

3. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 2, characterized in that, The interlocking mechanism also includes a locking operation button; The locking operation button is connected to the linkage slide plate via a second linkage assembly and is used to drive the linkage slide plate to slide during operation.

4. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 2 or 3, characterized in that, The circuit breaker drawer is provided with a mounting cover on the open side, and a locking slide plate that can move along the first horizontal direction is provided inside the mounting cover. The interlocking top block has a second end extending into the moving path of the locking slide plate, and the second end of the interlocking top block and the locking slide plate form an interlocking structure.

5. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 4, characterized in that, The linkage slide is provided with a limiting top block, and the pushing mechanism includes a handle shaft, on which a limiting structure is provided that cooperates with the limiting top block.

6. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 2, characterized in that, The linkage slide plate is provided with a movable connector, and the interlocking top block is provided with a groove corresponding to the connector. When the connector is inserted into the groove, the interlocking top block is restricted from moving downward.

7. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 2, characterized in that, The interlocking mechanism also includes a support base, a swing plate, and a reset elastic element; The support base is disposed on the base, and the linkage slide plate is slidably connected to the support base through a sliding connector; The swing plate is swayably disposed between the support base and the linkage slide plate; The reset elastic element is connected between the swing plate and the base, and is used to provide an elastic force to reset the linkage slide plate.

8. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 7, characterized in that, It also includes a linkage piece, which is movably arranged along a second horizontal direction. One end of the linkage piece abuts against the lower end of the swing plate, and the other end is connected to the slide plate of the pushing mechanism so as to move synchronously with the slide plate.

9. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 8, characterized in that, The linkage plate is provided with multiple protrusions that cooperate with the lower end of the swing plate.

10. The tripping interlocking mechanism of a universal circuit breaker drawbar according to claim 1, characterized in that, The pushing mechanism includes a sliding plate, a transmission screw, and a handle shaft; The sliding plate is slidably disposed within the circuit breaker drawer along the second horizontal direction; The transmission lead screw is threadedly connected to the slide plate; The handle shaft is connected to the transmission screw and is used to receive external operating torque to drive the transmission screw to rotate. The slide plate is provided with a rack portion, which meshes with a gear. The shaft of the gear is connected to the mounting bracket of the circuit breaker body to convert the linear motion of the slide plate into the linear movement of the circuit breaker body.

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