Circuit breaker control mechanism used in switch cabinet

Abstract

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker control mechanism used in a switch cabinet, which comprises a switch cabinet, and a first circuit breaker and a second circuit breaker are arranged in the switch cabinet; push rods are arranged on the first circuit breaker and the second circuit breaker, the first circuit breaker and the second circuit breaker are driven by the push rods to move, and the switch cabinet is characterized in that a driving rod is fixedly arranged at the lower end of the first circuit breaker, a seesaw is arranged below the driving rod, and the seesaw is arranged at the bottom of the switch cabinet through a fulcrum; a plurality of mounting grooves are formed in the seesaw, sleeves are arranged in the mounting grooves, the sleeves are connected with the seesaw in a matched mode, and the center lines of the sleeves are parallel to the push rod all the time; a connecting groove is formed in the sleeve and connected with the push rod in a matched mode. Connecting rods are arranged at the lower ends of the first circuit breaker and the second circuit breaker; the connecting rods are matched and connected with the sleeves; the problems that in the prior art, a mechanical interlocking mechanism is complex, clamping stagnation is prone to occurring, and errors cannot be compensated in a self-adaptive mode are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit breakers and relates to a circuit breaker control mechanism for use in a switchgear cabinet. Background Art

[0002] In a power distribution system, to ensure the reliability and stability of power supply, when there are important loads in the load, according to relevant power distribution design specifications, a dual-power distribution scheme is often required. This requires configuring a main circuit breaker and a standby circuit breaker in the switchgear cabinet, and ensuring that only one of them can be in the working position. It is crucial to achieve a reliable electrical interlock function. In the prior art, the performance of the circuit breaker control mechanism directly affects the operation safety and efficiency of the entire power distribution system.

[0003] During the production and actual use process, there are many problems with the existing circuit breaker control mechanisms. On the one hand, the mechanical interlock mechanism is complex and contains numerous components, which not only increases the difficulty and cost of production and manufacturing, but also makes the assembly and debugging work cumbersome due to the complex structure, and it is easy to have installation errors, thus affecting the normal operation of the equipment. On the other hand, such mechanisms are prone to jamming. During frequent operation, the friction and wear between components will cause the cooperation accuracy to decrease, resulting in jamming, affecting the normal operation of the circuit breaker and reducing the reliability of the equipment. At the same time, the existing control mechanisms have extremely high requirements for machining accuracy, and a tiny machining error may cause the mechanism to operate smoothly, which undoubtedly increases the cost of production and manufacturing and the difficulty of quality control. In addition, due to the lack of self-adaptive ability in its structure, it is unable to compensate for the errors generated during operation. After long-term use, the performance of the mechanism will gradually decline, and frequent maintenance and adjustment are required.

[0004] In response to the above problems, there are currently various solutions. For example, the patent authorization announcement number CN105225868B discloses a circuit breaker control mechanism for use in a switchgear cabinet, which realizes the interlock between circuit breakers by setting components such as a non-circular lead screw, a lifting drive slider, a lifting lead screw limit block, a lever, and a return spring. Its principle is that one circuit breaker pushes the lifting drive slider to descend, and according to the lever principle, the lifting lead screw limit block of the other circuit breaker rises to block the drive lead screw, preventing the two circuit breakers from working simultaneously. This method solves the problem of the two circuit breakers working simultaneously to a certain extent, and has relatively low requirements for machining accuracy and is relatively flexible to use. However, it also has some deficiencies. For example, there are many components and the structure is relatively complex. During long-term operation, components such as levers and linkages may become loose or deformed, affecting the reliability of the interlock; the elasticity of the return spring may also change over time, resulting in inaccurate reset of the mechanism.

[0005] Through comprehensive analysis, although the existing solutions have achieved certain results in some aspects, they cannot fully meet the requirements of simple reliability and low maintenance cost of the circuit breaker control mechanism in actual production. Therefore, it is necessary to develop a new circuit breaker control mechanism for switchgear to solve the problems of complex mechanical interlock mechanism, easy jamming, dependence on high-precision machining and inability to adaptively compensate for errors in the existing technology, and achieve reliable interlock of double circuit breakers and reduce maintenance costs. Summary of the Invention

[0006] The present invention provides a circuit breaker control mechanism for switchgear to solve the problems of complex mechanical interlock mechanism, easy jamming, dependence on high-precision machining and inability to adaptively compensate for errors in the existing technology, and realizes reliable interlock of double circuit breakers and reduces maintenance costs.

[0007] In order to solve the above problems, the technical solution adopted by the invention is:

[0008] A circuit breaker control mechanism for switchgear includes a switchgear, and a first circuit breaker and a second circuit breaker are arranged in the switchgear; push rods are arranged on both the first circuit breaker and the second circuit breaker, and the first circuit breaker and the second circuit breaker are driven to move by the push rods. The characteristics are that: a driving rod is fixedly arranged at the lower end of the first circuit breaker, a seesaw is arranged at a position below the driving rod, and the seesaw is arranged on the bottom of the switchgear through a fulcrum; a plurality of mounting grooves are arranged on the seesaw, sleeves are arranged in the mounting grooves, the sleeves are connected with the seesaw in a matching manner, and the center line on the sleeves is always arranged in parallel with the push rod; a connecting groove is arranged on the sleeve, and the connecting groove is connected with the push rod in a matching manner; connecting rods are arranged at the lower ends of both the first circuit breaker and the second circuit breaker, and the connecting rods are connected with the sleeves in a matching manner.

[0009] The principle and advantages of this solution are as follows:

[0010] This solution realizes the interlock control of the circuit breaker through a mechanical linkage structure. When the first circuit breaker moves downward through the push rod, the driving rod fixed at its lower end moves synchronously and presses one end of the seesaw. Since the seesaw is hinged to the bottom of the switchgear through a fulcrum, the other end will tilt upward, driving the sleeves installed in the mounting grooves of the seesaw to move synchronously. The center line of the sleeve is always parallel to the push rod, and its connecting groove is matched with the connecting rod. Therefore, the sleeve is always in a stable state during the lifting process, and the connecting groove on the rising sleeve is connected with the push rod in a connected state; when the second circuit breaker descends, the driving rod below the second circuit breaker first touches the seesaw, and the other end tilts upward, so that the sleeve of the seesaw at the rising end is connected with the connecting rod of the first circuit breaker in a connected state; and after the driving rod is provided, when the first circuit breaker and the second circuit breaker move downward at the same time, the first circuit breaker and the second circuit breaker will not be turned on at the same time, resulting in power consumption problems.

[0011] Compared with the prior art, by directly linking the active rod with the seesaw to drive the push rod, the number of precisely matched components is reduced, and the requirement for machining accuracy is significantly lowered. For example, in the comparative solution, it is necessary to ensure the precise fit between the wedge-shaped slider and the push rod limit groove, while in this solution, it only needs to ensure the matching of the sleeve and the connection groove of the push rod, and the manufacturing difficulty is greatly reduced. At the same time, the seesaw constructs a physical-level forced interlocking mechanism through the lever principle. When the active rod of one circuit breaker presses down one end of the seesaw, the other end will surely tilt up, driving the corresponding sleeve to act, thereby restricting the connection of another circuit breaker. This interlocking method based on the mechanical structure is direct and reliable, fundamentally eliminating the possibility of two circuit breakers being connected simultaneously. For example, during the operation of the power system, situations such as electrical control signal interference may occur. If only relying on the electrical logic control unit to move the circuit breaker alone, it may cause the dual power supplies to be connected simultaneously due to signal errors. However, the mechanical interlocking of the seesaw is not affected by electrical signal interference, and can ensure the stable realization of the interlocking function under any complex electromagnetic environment.

[0012] In this solution, through the combination of the seesaw and the sleeve, the interlocking action is simplified to a single lifting motion, reducing the moving parts. Compared with the lever-wedge block structure in the comparative document, which relies on the cooperation of mechanical components such as connecting rods, levers, and wedge blocks, the swing of the sleeve in the installation groove can automatically compensate for the axis deviation between the connecting rod and the sleeve, reducing the maintenance cost; at the same time, with the lever action of the seesaw, the interlocking control of the two circuit breakers is simplified to a relatively simple mechanical action. Compared with separately controlling the connections of the first circuit breaker and the second circuit breaker, there is no need for complex electrical control logic and multiple sets of sensors to coordinate their actions. Only by controlling the push rod of the circuit breaker to interact with the active rod and the seesaw can the interlocking function be achieved. This greatly reduces the complexity of the control system, reduces the workload of control program development and debugging, and also reduces the failure risk caused by complex control logic.

[0013] In the prior art, the rigid contact between the wedge block and the limit groove is prone to jamming due to dust and deformation. In this solution, the sleeve and the connecting rod are in contact and limited through the connection groove, and the installation groove allows the sleeve to have a floating amount in the direction perpendicular to the push rod. For example, when the push rod is slightly offset due to vibration in the switch cabinet, the sleeve and the connecting rod can still be properly docked; in the prior art, the non-circular push rod requires special processing technology, while in this solution, a push rod is adopted to move the circuit breaker downward. Compared with the comparative document, the push rod only requires standard linear motion components, reducing the manufacturing cost. The comparative document drives the circuit breaker to move horizontally through the rotation of the lead screw, relying on the precise fit between the non-circular lead screw and the limit groove, with high processing cost and high requirement for assembly accuracy.

[0014] In addition, the rigid contact between the wedge block and the limit groove in the reference document is prone to jamming due to dust and deformation. This solution reduces the risk of jamming through the sliding cooperation between the push rod and the guide sleeve; at the same time, the screw drive needs to reserve installation space along the length direction of the circuit breaker. The lever transmission in the reference document has mechanical delay, while the push rod directly triggers the interlocking mechanism through a rigid connection, shortening the response time. In the emergency disconnection scenario, the fault circuit can be cut off in advance, reducing the risk of arcing and improving system safety.

[0015] Furthermore, the sleeve is movably connected to the seesaw, and the sleeve and the seesaw are fixedly connected via a rotating shaft, which allows the sleeve to rotate around the axis when the seesaw moves, thereby adjusting the relative angle between the sleeve and the connecting rod. For example, when the seesaw tilts due to the push of the active rod, the sleeve can maintain the parallelism between the connecting groove and the connecting rod by rotating, avoiding the connecting rod from getting stuck due to angle deviation.

[0016] Furthermore, the bottom of the sleeve is arranged in a circular structure, and the sleeve is connected with the seesaw so that the sleeve can be kept stable when the seesaw moves up and down, so as to facilitate the connection between the sleeve and the connecting rod on the circuit breaker; when the seesaw is tilted due to the push of the active rod, the sleeve can rotate around the bottom rotating axis to adjust the parallelism of the connecting groove and the connecting rod.

[0017] Furthermore, an arc-shaped mechanism is arranged in the mounting groove on the seesaw, and a lubrication cavity with an arc-shaped structure is arranged at the bottom of the connecting groove. The sleeve is installed in the lubrication cavity so that the sleeve can swing in the arc-shaped lubrication cavity, so that the position of the sleeve can be better adjusted when the seesaw moves up and down, so that the connecting groove on the sleeve is always in a vertical state.

[0018] Furthermore, a self-balancing gyroscope is provided at the bottom of the sleeve, which can sense the posture changes of the sleeve in space in real time. When disturbed by external factors such as vibration, collision or irregular movement, it will respond quickly, and ensure that the sleeve always remains stable by adjusting relevant components or triggering compensation mechanisms. For example, at a construction site or on a mobile work platform, vibration and shaking in the environment are relatively frequent, and the self-balancing gyroscope can effectively offset these adverse effects, avoiding damage to internal equipment or affecting working accuracy due to sleeve shaking.

[0019] Furthermore, a connecting groove is provided on the sleeve, and the connecting groove is arranged in a trumpet-mouth structure. The trumpet-mouth-shaped connecting groove, whose structure of being wide outside and narrow inside, plays a natural guiding role. When other components need to be inserted into the connecting groove, the larger opening end can more easily accommodate the inserted components.

[0020] Further, a wedge-shaped permanent magnet is arranged at the bottom of the connecting groove and fixedly connected to the connecting groove. By arranging a permanent magnet in the connecting groove, when the circuit breaker moves downward, the connecting rod and the sleeve can be positioned and docked through magnetic attraction.

[0021] Further, a contact part is arranged at the bottom of the push rod. The contact part is arranged in a wedge-shaped structure and can be cooperatively connected with the connecting groove. The wedge-shaped contact part guides the push rod into the connecting groove through an inclined surface, and no additional positioning device is required.

[0022] Further, springs are arranged at both ends of the fulcrum at the bottom position of the seesaw. When the circuit breaker needs to be reset, the elastic force of the springs and the reverse magnetic attraction force of the wedge-shaped permanent magnet act together. The elastic force provided by the springs can help the seesaw quickly return to the initial position, separate the sleeve from the connecting rod, and realize the reset operation of the circuit breaker. Compared with relying only on the reverse magnetic force of the permanent magnet, the auxiliary effect of the springs speeds up the reset speed and ensures that the mechanism can quickly respond to the next operation instruction.

[0023] Further, the driving rod below the second circuit breaker is cooperatively connected with the second circuit breaker. The driving rod on the second circuit breaker can be horizontally slidably arranged along the direction of the first circuit breaker at the lower end of the second circuit breaker. When the second circuit breaker needs to be disconnected, the driving rod moves along the direction of the first circuit breaker. When the second circuit breaker moves downward, after the driving rod contacts the seesaw, the seesaw at the end close to the first circuit breaker is lifted, so that the sleeve at one end of the first circuit breaker contacts the connecting rod on the first circuit breaker, and at the same time, the connecting rod of the second circuit breaker is prevented from connecting with the sleeve at the end of the second circuit breaker, avoiding the two circuit breakers connecting with the sleeve at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the circuit breaker of the present invention;

[0025] Figure 2 is a schematic structural diagram of the using process of the present invention;

[0026] Figure 3 is a schematic structural diagram of the seesaw and the sleeve;

[0027] Figure 4 is a schematic connection diagram of the connecting rod and the sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The reference numerals in the accompanying drawings of the specification include: first circuit breaker 1, driving rod 2, contact part 3, push rod 4, fulcrum 5, seesaw 6, sleeve 7, spring 8, installation groove 9, lubrication cavity 10, rotating shaft 11, connecting groove 12, permanent magnet 13, electric slide rail 14, second circuit breaker 15, connecting rod 16, switch cabinet 17.

[0029] Embodiment 1 is basically as Figures 1-4As shown in the figure, a circuit breaker control mechanism for a switchgear cabinet 17 includes the switchgear cabinet 17. Inside the switchgear cabinet 17, a first circuit breaker 1 and a second circuit breaker 15 are provided. Push rods 4 are installed on both the first circuit breaker 1 and the second circuit breaker 15. The first circuit breaker 1 and the second circuit breaker 15 rely on the drive of the push rods 4 to achieve movement.

[0030] The lower end of the first circuit breaker 1 is fixed with a driving rod 2. Below the driving rod 2, a seesaw 6 is provided. The seesaw 6 is installed at the bottom of the switchgear cabinet 17 through a fulcrum 5. Centered on this fulcrum 5, the seesaw 6 can swing up and down.

[0031] Two mounting grooves 9 are provided on the seesaw 6. A sleeve 7 is installed in each mounting groove 9. The sleeve 7 is movably connected with the seesaw 6 through a rotating shaft, which enables the sleeve 7 to rotate around the axis when the seesaw 6 moves. The bottom of the sleeve 7 is of a circular structure and is connected with the seesaw 6 in a matching manner. When the seesaw 6 moves up and down, the sleeve 7 can always remain stable. A connecting groove 12 is provided on the sleeve 7, and the connecting groove 12 is of a flared structure, wider outside and narrower inside. A wedge-shaped permanent magnet 13 is fixedly connected to the bottom of the connecting groove 12.

[0032] Connecting rods 16 are provided at the lower ends of both the first circuit breaker 1 and the second circuit breaker 15. The connecting rods 16 are in matching connection with the connecting grooves 12 on the sleeves 7. A contact part 3 in a wedge-shaped structure is provided at the bottom of the connecting rod 16, and the contact part 3 can cooperate with the connecting groove 12.

[0033] The mounting grooves 9 on the seesaw 6 are arranged in an arc-shaped structure. An arc-shaped lubricating cavity 10 is provided at the bottom of the connecting groove 12. The sleeve 7 is installed in the arc-shaped lubricating cavity 10, enabling the sleeve 7 to swing in the arc-shaped lubricating cavity 10. A self-balancing gyroscope is also provided at the bottom of the sleeve 7 for real-time sensing of the attitude change of the sleeve 7 in space.

[0034] Springs 8 are provided at both ends of the fulcrum 5 at the bottom of the seesaw 6, and the springs 8 play a specific role during the operation of the mechanism.

[0035] The driving rod 2 below the second circuit breaker 15 is in matching connection with the second circuit breaker 15, and the driving rod 2 on the second circuit breaker 15 can slide horizontally along the direction of the first circuit breaker 1 at the lower end of the second circuit breaker 15.

[0036] In actual use, when the first circuit breaker 1 moves downward through the push rod 4, the active rod 2 fixed at the lower end moves downward synchronously, thereby pressing down one end of the seesaw 6. Since the seesaw 6 is hinged to the bottom of the switch cabinet 17 through the fulcrum 5, according to the lever principle, the other end of the seesaw 6 will tilt upward, thereby driving the sleeve 7 installed in the installation groove 9 of the seesaw 6 to rise synchronously. During this process, the center line of the sleeve 7 is always parallel to the push rod 4, and the bottom of the sleeve 7 is circular, making it stable during the lifting and lowering process. At the same time, the sleeve 7 is movably connected to the seesaw 6 through a rotating shaft. When the seesaw 6 tilts due to the push of the active rod 2, the sleeve 7 can rotate around the axis to maintain the parallelism between the connection groove 12 and the connecting rod 16, avoiding jamming of the connecting rod 16. The connection groove 12 is in a flared structure, which facilitates the wedge-shaped contact part 3 at the bottom of the push rod 4 to enter the connection groove 12 through the inclined plane guidance without the need for an additional positioning device. Moreover, the wedge-shaped permanent magnet 13 at the bottom of the connection groove 12 enables magnetic attraction positioning and docking between the connecting rod 16 and the sleeve 7 when the circuit breaker moves downward.

[0037] When the second circuit breaker 15 needs to operate, the active rod 2 first slides horizontally along the direction of the first circuit breaker 1, and then the second circuit breaker 15 moves downward. After the active rod 2 contacts the seesaw 6, it lifts the seesaw 6 at the end close to the first circuit breaker 1, so that the sleeve 7 at one end of the first circuit breaker 1 contacts the connecting rod 16 on the first circuit breaker 1, while preventing the connecting rod 16 of the second circuit breaker 15 from connecting to the sleeve 7 at the lower end of the second circuit breaker 15, thereby preventing the two circuit breakers from connecting to the sleeve 7 simultaneously, realizing reliable interlocking of the double circuit breakers and avoiding power consumption problems.

[0038] During the whole process, if the push rod 4 is slightly offset due to external factors such as vibration of the switch cabinet 17, since the installation groove 9 allows a certain floating amount of the sleeve 7 in the direction perpendicular to the push rod 4, and the sleeve 7 and the connecting rod 16 are in contact limit fit through the connection groove 12, the organic docking between the two can still be ensured. At the same time, the design of the arc-shaped installation groove 9 and the lubrication cavity 10 enables the seesaw 6 to better adjust the position of the sleeve 7 when moving up and down, so that the connection groove 12 on the sleeve 7 is always in a state convenient for docking.

[0039] When the circuit breaker needs to be reset, the elastic force of the spring 8 and the reverse magnetic attraction force of the wedge-shaped permanent magnet 13 act together. The elastic force provided by the spring 8 helps the seesaw 6 quickly return to the initial position, separating the sleeve 7 from the connecting rod 16, realizing the reset operation of the circuit breaker. Compared with relying only on the reverse magnetic force of the permanent magnet 13, the reset speed is greatly increased, ensuring that the mechanism can quickly respond to the next operation instruction.

[0040] In addition, in some special scenarios, such as construction sites or mobile working platforms, vibrations and shakes in the environment are relatively frequent. At this time, the self-balancing gyroscope at the bottom of the sleeve 7 comes into play. It can real-time sense the attitude changes of the sleeve 7 in space. When disturbed by vibrations, collisions, or irregular movements, etc., it can quickly respond to ensure that the sleeve 7 always remains stable, avoiding damage to internal equipment or affecting the working accuracy due to the shaking of the sleeve 7.

[0041] Specific implementation process

[0042] When the first circuit breaker 1 receives an instruction to connect the circuit, it drives downward through the push rod 4. At this time, the active rod 2 fixed at the lower end of the first circuit breaker 1 moves downward synchronously and presses down one end of the seesaw 6. Since the seesaw 6 is hinged to the bottom of the switch cabinet 17 through the fulcrum 5, according to the lever principle, the other end of the seesaw 6 will tilt upward. The sleeve 7 installed in the installation groove 9 at this end of the seesaw 6 rises synchronously with the tilting of the seesaw 6. During the rising process, the sleeve 7 is movably connected to the seesaw 6 through a rotating shaft and can rotate around the axis. When the seesaw 6 tilts due to the push of the active rod 2, the sleeve 7 can automatically rotate to maintain the parallelism between the connection groove 12 and the connecting rod 16, avoiding jamming of the connecting rod 16 due to angle deviation. At the same time, the circular structure at the bottom of the sleeve 7 cooperates with the bottom of the installation groove 9 of the seesaw 6 to keep it stable during the lifting and lowering process. The connection groove 12 has a flared structure, which facilitates the wedge-shaped contact part 3 at the bottom of the push rod 4 to smoothly enter the connection groove 12 through the guidance of the inclined surface. And the wedge-shaped permanent magnet 13 at the bottom of the connection groove 12 generates a magnetic attraction force to assist in the positioning and docking of the push rod 4 and the connection groove 12, realizing the reliable connection between the first circuit breaker 1 and related components and completing the circuit connection operation. During this process, the self-balancing gyroscope real-time senses the attitude changes of the sleeve 7. If disturbed by external vibrations, etc., it quickly responds, and by adjusting related components or triggering a compensation mechanism, ensures that the sleeve 7 always remains stable and guarantees the stability of the connection. At the same time, the lubricating grease in the arc-shaped lubricating cavity 10 plays a lubricating role for the sleeve 7, reducing wear, and allowing the sleeve 7 to swing in the cavity to better adjust the position of the sleeve 7, so that the connection groove 12 is always in a vertical state convenient for docking.

[0043] When it is necessary to disconnect the second circuit breaker 15 and connect the first circuit breaker 1, the active rod 2 below the second circuit breaker 15 first slides horizontally along the direction of the first circuit breaker 1, and then the second circuit breaker 15 moves downward. After the active rod 2 on the second circuit breaker 15 touches the seesaw 6, it lifts the seesaw 6 at the end close to the first circuit breaker 1, so that the sleeve 7 at one end of the first circuit breaker 1 contacts and connects with the connecting rod 16 on the first circuit breaker 1, while preventing the connecting rod 16 of the second circuit breaker 15 from connecting with the sleeve 7 at the lower end of the second circuit breaker 15, thus preventing the two circuit breakers from connecting to the sleeve 7 simultaneously and realizing the reliable interlock of the double circuit breakers. During this process, the cooperation of each component is similar to that when the first circuit breaker 1 operates, ensuring the accuracy and reliability of the operation.

[0044] When it is necessary to disconnect the circuit and reset the circuit breaker, the elastic force of the spring 8 and the reverse magnetic suction force of the wedge-shaped permanent magnet 13 act together. The elastic force provided by the spring 8 helps the rocker 6 quickly return to the initial position, separates the sleeve 7 from the connecting rod 16, and realizes the reset operation of the circuit breaker. Compared with relying only on the reverse magnetic force of the permanent magnet 13, the auxiliary effect of the spring 8 greatly speeds up the reset speed and ensures that the mechanism can quickly respond to the next operation instruction.

[0045] The active rods 2 provided on the first circuit breaker 1 and the second circuit breaker 15 are slidably connected through the electric slide rail 14, so that the active rods 2 on the first circuit breaker 1 and the second circuit breaker 15 can be slidably arranged. In actual use, when the first circuit breaker 1 descends, the slide rail on the first circuit breaker 1 slides along one side of the second circuit breaker 15. At the same time, the active rod 2 on the second circuit breaker 15 slides away from one side of the first circuit breaker 1 synchronously. When the active rod 2 on the first circuit breaker touches the rocker 6, the active rod 2 on the second circuit breaker 15 moves away from the rocker 6, so that the sleeve 7 on the rocker 6 will not be blocked by the active rod 2 when connecting to the second circuit breaker 15. When the second circuit breaker 15 descends, the active rod 2 of the second circuit breaker 15 will also slide towards one side of the first circuit breaker 1, and the active rod 2 on the first circuit breaker 1 will also slide along the side away from the second circuit breaker 15, so that the active rod 2 under the second circuit breaker 15 presses against the rocker 6, so that the sleeve 7 on the rocker 6 at one end of the first circuit breaker 1 first touches the first circuit breaker 1. Because of the limit of the active rod 2, the second circuit breaker 15 will not be connected to the sleeve 7 on the rocker 6, avoiding the connection of the two circuit breakers.

[0046] The above are only the embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solution are not described in detail here. Those of ordinary skill in the art know all the common general knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A circuit breaker control mechanism for use inside a switchgear cabinet, comprising a switchgear cabinet, wherein a first circuit breaker and a second circuit breaker are arranged inside the switchgear cabinet; push rods are arranged on both the first circuit breaker and the second circuit breaker, and the first circuit breaker and the second circuit breaker are driven to move through the push rods, and it is characterized in that: A driving rod is fixedly arranged at the lower end of the first circuit breaker. A seesaw is arranged below the driving rod. The seesaw is arranged at the bottom of the switch cabinet through a fulcrum. A plurality of mounting grooves are arranged on the seesaw. A sleeve is arranged in the mounting groove. The sleeve is connected with the seesaw in a matching manner. The center line on the sleeve is always arranged in parallel with the push rod. A connecting groove is arranged on the sleeve. The connecting groove is connected with the push rod in a matching manner. Connecting rods are arranged at the lower ends of both the first circuit breaker and the second circuit breaker. The connecting rods are connected with the sleeve in a matching manner.

2. The circuit breaker control mechanism for use inside a switch cabinet according to claim 1, wherein The sleeve is movably connected with the seesaw in a matching manner. The sleeve is fixedly connected with the seesaw through a rotating shaft.

3. The circuit breaker control mechanism for use in a switch cabinet according to claim 2, characterized in that, The bottom of the sleeve is arranged in a circular structure. The sleeve is connected with the seesaw in a matching manner.

4. A circuit breaker control mechanism for use in a switchgear cabinet according to claim 1, characterized in that, The mounting groove on the seesaw is arranged in an arc-shaped structure. A lubricating cavity with an arc-shaped structure is arranged at the bottom of the connecting groove. The sleeve is installed in the lubricating cavity.

5. A circuit breaker control mechanism for use inside a switchgear cabinet according to claim 1, characterized in that, A self-balancing gyroscope is arranged at the bottom of the sleeve.

6. The circuit breaker control mechanism for use in a switch cabinet according to claim 1, wherein A connecting groove is arranged on the sleeve. The connecting groove is arranged in a flared structure.

7. The circuit breaker control mechanism for use in a switchgear cabinet according to claim 6, characterized in that, A wedge-shaped permanent magnet is fixedly connected to the bottom of the connecting groove.

8. A contact part is arranged at the bottom of the push rod. The contact part is arranged in a wedge-shaped structure and can be connected with the connecting groove in a matching manner.

9. The circuit breaker control mechanism for use in a switchgear cabinet according to claim 1, wherein, Springs are arranged at both ends of the fulcrum at the bottom position of the seesaw.

10. The circuit breaker control mechanism for use in a switchgear cabinet according to claim 1, characterized in that, The driving rods below the second circuit breaker and the first circuit breaker are both connected in a matching manner. The driving rod can be horizontally slid along the direction of the first circuit breaker at the lower end of the second circuit breaker.

Images