Linkage opening and closing mechanism of high-voltage switch

Abstract

The utility model provides a linkage opening and closing mechanism of a high-voltage switch, which relates to the technical field of switch control of high-voltage electrical equipment, and comprises a mounting rack for fixing the equipment, the front side of the mounting rack is fixedly connected with a power mechanism for opening and closing, and the right side of the power mechanism is movably connected with a connecting structure for connecting the opening and closing; the rear side of the connecting structure is fixedly connected with a switching-on and switching-off structure, the two sides of the switching-on and switching-off structure are movably connected with three groups of wiring terminals, and the bottoms of the wiring terminals are fixedly connected with the top of the mounting frame. By arranging the mounting rack, the power mechanism, the connecting structure and the opening and closing structure, the problems of arc damage, complex mechanical interlocking structure and high failure rate caused by asynchronous actions of the traditional opening and closing mechanism of the existing switch are solved.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage electrical equipment switch control technology, and in particular to a high-voltage switch linkage opening and closing mechanism. Background Technology

[0002] High-voltage switches refer to electrical appliances with a rated voltage of 1kV and above, mainly used for opening and closing conductive circuits. It is a general term for the high-voltage switch and its corresponding control, measurement, protection, and regulating devices, as well as auxiliary components, housings, and supporting parts, and their electrical and mechanical connections. It is an important control device for connecting and disconnecting circuits and isolating faults. High-voltage switchgear generally includes high-voltage circuit breakers, disconnecting switches, load switches, fuses, and high-voltage switchgear. High-voltage circuit breakers (or high-voltage switches) can not only cut off or close the no-load current and load current in high-voltage circuits, but also, when a system fault occurs, can cut off overload current and short-circuit current through the action of relay protection devices. They have a fairly complete arc-extinguishing structure and sufficient breaking capacity, and can be divided into oil circuit breakers (multi-oil circuit breakers, low-oil circuit breakers), sulfur hexafluoride circuit breakers (SF6 circuit breakers), vacuum circuit breakers, compressed air circuit breakers, etc.

[0003] In existing technologies, high-voltage switch control requires the use of a linkage opening and closing mechanism. However, during use, the existing high-voltage switch linkage opening and closing mechanism suffers from asynchronous operation, leading to arc damage. The mechanical interlocking structure is complex and has a high failure rate. Therefore, a high-voltage switch linkage opening and closing mechanism that can synchronize and has a simple structure is needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a high-voltage switch linkage opening and closing mechanism that facilitates synchronized operation of the opening and closing mechanism and is simple and easy to operate, thereby solving the problems of arc damage caused by asynchronous operation of existing switch traditional opening and closing mechanisms, complex mechanical interlocking structure, and high failure rate.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-voltage switch linkage opening and closing mechanism, including a mounting bracket for fixing the equipment, a power mechanism for opening and closing the switch is fixedly connected to the front side of the mounting bracket, and a connecting structure for connecting the opening and closing is movably connected to the right side of the power mechanism.

[0006] The rear side of the connection structure is fixedly connected to a switching structure, and both sides of the switching structure are movably connected to wiring terminals. There are three sets of wiring terminals, and the bottom of the wiring terminals is fixedly connected to the top of the mounting bracket.

[0007] Furthermore, the power mechanism includes a servo motor, the output end of which is fixedly connected to a screw, the surface of which is threadedly connected to a threaded sleeve, the surface of which is fixedly connected to a movable housing, the right side of which is fixedly connected to a connecting structure, the surface of which is fixedly connected to a fixed frame, and the rear side of which is fixedly connected to the front side of a mounting frame.

[0008] Furthermore, the connecting structure includes a hexagonal sleeve, which is fitted onto the surface of the opening and closing structure. A connecting plate is fixedly connected to the bottom of the hexagonal sleeve, and a fixed shaft is movably connected inside the connecting plate. A sleeve is fixedly connected to the surface of the fixed shaft, and the surface of the sleeve is movably connected to the interior of the connecting plate. The left side of the sleeve is fixedly connected to the right side of the fixed frame.

[0009] Furthermore, the opening and closing structure includes a hexagonal block located inside a hexagonal sleeve. A drive shaft is fixedly connected to the rear side of the hexagonal block. The rear side of the drive shaft passes through the mounting bracket and extends into the interior of the mounting bracket. A first connecting rod is fixedly connected to the surface of the drive shaft. A second connecting rod is movably connected to the top of the first connecting rod via a first rotating shaft. A contact rod is movably connected to the top of the second connecting rod via a second rotating shaft. A fixed connector is movably connected to the left side of the contact rod via a third rotating shaft. The fixed connector is fixedly connected to the left-side terminal block. A movable connector is snapped into the right side of the contact rod. The movable connector is fixedly connected to the right-side terminal block.

[0010] Furthermore, a protective shell is fitted onto the surface of the movable shell, the left side of the protective shell is fixedly connected to the right side of the fixed frame, and a reinforcing sleeve for reinforcing the connection with the movable shell is fixedly connected inside the protective shell, the inside of the reinforcing sleeve being movably connected to the surface of the movable shell.

[0011] Furthermore, the top of the hexagonal sleeve is provided with a screw for limiting the hexagonal sleeve. The threaded end of the screw penetrates the hexagonal sleeve and extends to the surface of the hexagonal block. The left side of the connecting plate is provided with an opening for use with the sleeve and the fixing bracket. The inside of the connecting plate is provided with a through hole for use with the fixing shaft. Bearing seats are provided on the front and rear sides of the surface of the drive shaft. The surface of the bearing seats is fixedly connected to the surface of the mounting bracket. An insulator is fixedly connected to the surface of the second connecting rod.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of a mounting frame, a power mechanism, a connecting structure, and a switching structure, ensures the stable fixation of the equipment and guarantees its stability and safety during operation by setting up a mounting frame. The power mechanism is fixedly connected to the front side of the mounting frame, providing a reliable power source for switching operations and ensuring the accuracy and timeliness of the switching actions. The connecting structure is movably connected to the right side of the power mechanism, acting as a bridge to effectively transmit the action of the power mechanism to the switching structure, realizing remote control or automated operation of switching, and improving the convenience and efficiency of operation. The switching structure is connected to the circuit through three sets of wiring terminals to meet various circuit connection needs, improving the applicability and flexibility of the equipment. The bottom of the wiring terminals is fixedly connected to the top of the mounting frame, ensuring the stability and safety of the circuit connection.

[0014] 2. This utility model, by setting up a power mechanism, can achieve precise movement control. The servo motor, as the power source, ensures the stability and accuracy of the screw rotation with its high-precision output. The threaded connection design between the screw and the sleeve allows the sleeve to move along its axial direction when the screw rotates, thereby driving the movable shell fixedly connected to it to perform linear motion, which can achieve precise positioning and movement.

[0015] 3. By setting up a connection structure, this utility model can improve the stability and reliability of the opening and closing structure. The hexagonal sleeve is fitted onto the surface of the opening and closing structure. Through the movable connection between the connecting plate and the fixed shaft and the sleeve, as well as the fixed connection between the sleeve and the fixed frame, a stable mechanical connection system is formed, which enhances the overall strength of the structure, makes the opening and closing operation smoother, and reduces the risk of failure caused by structural loosening or deformation.

[0016] 4. This utility model, by setting up a circuit breaker opening and closing structure, can improve the stability and reliability of the circuit connection. The cooperation between the hexagonal block and the hexagonal sleeve ensures the stable installation of the transmission shaft, guaranteeing the accuracy and stability of the entire circuit breaker opening and closing process. The transmission shaft, through the linkage mechanism composed of the first connecting rod, the second connecting rod, and the contact rod, realizes the smooth transmission and conversion of force, enabling the contact rod to smoothly perform opening and closing actions. The contact rod is movably connected to the fixed connector through the third rotating shaft, and the snap-fit ​​design with the moving connector not only facilitates the connection and disconnection of the wiring terminals, but also improves the flexibility and safety of the circuit connection.

[0017] 5. By setting up a protective shell and a reinforcing sleeve, this utility model can improve the structural strength and stability of the mobile shell. The left side of the protective shell is fixedly connected to the right side of the fixed frame, providing an additional protective layer for the mobile shell and effectively preventing external factors from directly impacting and damaging the mobile shell. The inside of the reinforcing sleeve is movably connected to the surface of the mobile shell, reinforcing the connection between the mobile shell and the protective shell, enhancing the overall stability, and extending the service life.

[0018] 6. This utility model ensures the stability and accuracy of the hexagonal sleeve during use by incorporating screws, openings, through holes, bearing seats, and insulators, effectively preventing the hexagonal sleeve from falling off or becoming misaligned. The openings on the connecting plate, used in conjunction with the sleeve and fixing bracket, improve the flexibility of the structure, allowing the entire device to adapt to the connection requirements of components of different sizes. The use of through holes in conjunction with the fixing shaft enhances the stability of the structure. The bearing seats fitted on the surface of the transmission shaft are fixedly connected to the mounting bracket, reducing friction and loss during transmission, improving transmission efficiency and service life. The insulators fixed to the surface of the second connecting rod effectively ensure electrical safety and prevent safety hazards such as current leakage or short circuits. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional view of the power mechanism;

[0022] Figure 3 This is a three-dimensional diagram of the opening and closing mechanism;

[0023] Figure 4 This is a cross-sectional perspective view of the protective shell.

[0024] In the diagram: 1. Mounting bracket; 2. Terminal block; 3. Servo motor; 4. Screw; 5. Screw sleeve; 6. Moving housing; 7. Fixed bracket; 8. Hexagonal sleeve; 9. Connecting plate; 10. Fixed shaft; 11. Sleeve; 12. Hexagonal block; 13. Drive shaft; 14. First connecting rod; 15. Second connecting rod; 16. Contact rod; 17. Fixed joint; 18. Moving joint; 19. Protective housing; 20. Reinforcing sleeve; 21. Screw; 22. Opening; 23. Through hole; 24. Bearing seat; 25. Insulator. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] A high-voltage switch linkage opening and closing mechanism includes a mounting bracket 1 for fixing the equipment, a power mechanism for opening and closing is fixedly connected to the front side of the mounting bracket 1, and a connecting structure for connecting the opening and closing is movably connected to the right side of the power mechanism.

[0028] The rear side of the connecting structure is fixedly connected to the opening and closing structure. Both sides of the opening and closing structure are movably connected to the wiring terminals 2. There are three sets of wiring terminals 2. The bottom of the wiring terminals 2 is fixedly connected to the top of the mounting bracket 1.

[0029] Please see Figure 2 , Figure 3 and Figure 4 , Figure 2 This is a three-dimensional view of the power mechanism; Figure 3 This is a three-dimensional diagram of the opening and closing mechanism; Figure 4 This is a cross-sectional perspective view of the protective shell.

[0030] The power mechanism includes a servo motor 3, with a screw 4 fixedly connected to the output end of the servo motor 3. A threaded sleeve 5 is threadedly connected to the surface of the screw 4, and a movable housing 6 is fixedly connected to the surface of the threaded sleeve 5. The right side of the movable housing 6 is fixedly connected to the connecting structure. A fixed frame 7 is fixedly connected to the surface of the servo motor 3, and the rear side of the fixed frame 7 is fixedly connected to the front side of the mounting frame 1, enabling precise movement control. As a power source, the high-precision output of the servo motor 3 ensures the stability and accuracy of the screw 4's rotation. The threaded connection design between the screw 4 and the threaded sleeve 5 allows the threaded sleeve 5 to move along its axial direction when the screw 4 rotates, thereby driving the movable housing 6 fixedly connected to it to perform linear motion, enabling precise positioning and movement.

[0031] The connecting structure includes a hexagonal sleeve 8, which is fitted onto the surface of the opening and closing structure. A connecting plate 9 is fixedly connected to the bottom of the hexagonal sleeve 8. A fixed shaft 10 is movably connected inside the connecting plate 9. A sleeve 11 is fixedly connected to the surface of the fixed shaft 10. The surface of the sleeve 11 is movably connected to the inside of the connecting plate 9. The left side of the sleeve 11 is fixedly connected to the right side of the fixing frame 7. This improves the stability and reliability of the opening and closing structure. The hexagonal sleeve 8, fitted onto the surface of the opening and closing structure, forms a stable mechanical connection system through the movable connection between the connecting plate 9 and the fixed shaft 10 and the sleeve 11, as well as the fixed connection between the sleeve 11 and the fixing frame 7. This enhances the overall strength of the structure, makes the opening and closing operation smoother, and reduces the risk of failure caused by structural loosening or deformation.

[0032] The opening and closing mechanism includes a hexagonal block 12 located inside a hexagonal sleeve 8. A drive shaft 13 is fixedly connected to the rear side of the hexagonal block 12. The rear side of the drive shaft 13 passes through the mounting bracket 1 and extends into the interior of the mounting bracket 1. A first connecting rod 14 is fixedly connected to the surface of the drive shaft 13. A second connecting rod 15 is movably connected to the top of the first connecting rod 14 via a first rotating shaft. A contact rod 16 is movably connected to the top of the second connecting rod 15 via a second rotating shaft. A fixed connector 17 is movably connected to the left side of the contact rod 16 via a third rotating shaft. The fixed connector 17 is fixedly connected to the left-side terminal 2. A movable connector 18 is snapped into the right side of the contact rod 16. The fixed connection between terminal 8 and right-side terminal 2 enhances the stability and reliability of the circuit connection. The cooperation between hexagonal block 12 and hexagonal sleeve 8 ensures the stable installation of drive shaft 13, guaranteeing the accuracy and stability of the entire opening and closing process. Drive shaft 13 achieves smooth force transmission and conversion through the linkage mechanism composed of first connecting rod 14, second connecting rod 15 and contact rod 16, enabling contact rod 16 to smoothly perform opening and closing actions. Contact rod 16 is movably connected to fixed connector 17 through third rotating shaft and has a snap-fit ​​design with moving connector 18, which not only facilitates the connection and disconnection of terminal 2, but also improves the flexibility and safety of the circuit connection.

[0033] The surface of the movable shell 6 is covered with a protective shell 19. The left side of the protective shell 19 is fixedly connected to the right side of the fixing frame 7. Inside the protective shell 19, a reinforcing sleeve 20 is fixedly connected to reinforce the connection with the movable shell 6. The inside of the reinforcing sleeve 20 is movably connected to the surface of the movable shell 6, which can improve the structural strength and stability of the movable shell 6. The left side of the protective shell 19 is fixedly connected to the right side of the fixing frame 7, providing an additional protective layer for the movable shell 6, effectively preventing direct impact and damage to the movable shell 6 from external factors. The inside of the reinforcing sleeve 20 is movably connected to the surface of the movable shell 6, reinforcing the connection between the movable shell 6 and the protective shell 19, enhancing the overall stability and extending the service life.

[0034] The top of the hexagonal sleeve 8 is provided with a screw 21 for limiting the hexagonal sleeve 8. The threaded end of the screw 21 passes through the hexagonal sleeve 8 and extends to the surface of the hexagonal block 12. The left side of the connecting plate 9 has an opening 22 for use with the sleeve 11 and the fixing bracket 7. The inside of the connecting plate 9 has a through hole 23 for use with the fixing shaft 10. Bearing seats 24 are fitted on the front and rear sides of the surface of the drive shaft 13. The surface of the bearing seats 24 is fixedly connected to the surface of the mounting bracket 1. An insulator 25 is fixedly connected to the surface of the second connecting rod 15, ensuring the stability and accuracy of the hexagonal sleeve 8 during use. This effectively prevents the hexagonal sleeve 8 from falling off or becoming misaligned. The opening 22 on the connecting plate 9 works in conjunction with the sleeve 11 and the fixing bracket 7, improving the flexibility of the structure and enabling the entire device to adapt to the connection requirements of components of different sizes. The through hole 23 works in conjunction with the fixing shaft 10, enhancing the stability of the structure. The bearing seat 24 fitted on the surface of the transmission shaft 13 is fixedly connected to the mounting bracket 1, reducing friction and loss during transmission and improving transmission efficiency and service life. The insulator 25 fixed on the surface of the second connecting rod 15 effectively ensures electrical safety and prevents safety hazards such as current leakage or short circuit.

[0035] Working Principle: This utility model uses a servo motor 3 as a power source to drive the screw 4 to rotate. Due to the threaded connection design between the screw 4 and the screw sleeve 5, the screw sleeve 5 can move along its axial direction when the screw 4 rotates, thereby driving the movable housing 6, which is fixedly connected to it, to perform linear motion, achieving precise positioning and movement. The movable housing 6 is connected to the opening and closing structure through a connecting structure. The connecting structure uses a hexagonal sleeve 8 fitted onto the surface of the opening and closing structure, and forms a stable mechanical connection system with the fixed frame 7 through the connecting plate 9, the fixed shaft 10, and the sleeve 11, enhancing the overall strength of the structure. When the movable housing 6 moves, it drives the opening and closing structure to perform opening and closing operations through the connecting structure. The opening and closing structure includes components such as a hexagonal block 12, a transmission shaft 13, a first connecting rod 14, a second connecting rod 15, and a contact rod 16. The hexagonal block 12 and the hexagonal sleeve 8 cooperate to ensure the stable installation of the transmission shaft 13. The transmission shaft 13 achieves smooth force transmission and conversion through a linkage mechanism. This allows the contact rod 16 to open and close smoothly. The contact rod 16 is movably connected to the fixed joint 17 via the third rotating shaft and to the moving joint 18 via a snap-fit ​​design, enabling the connection and disconnection of the terminal 2. During the movement of the movable housing 6, the protective housing 19 provides an additional protective layer for the movable housing 6, effectively preventing direct impact and damage from external factors. The reinforcing sleeve 20 is movably connected to the surface of the movable housing 6, reinforcing the connection between the movable housing 6 and the protective housing 19 and enhancing the overall stability. The screw 21 on the top of the hexagonal sleeve 8 is used for limiting and preventing the hexagonal sleeve 8 from falling off or misaligning. The opening 22 on the connecting plate 9 is used in conjunction with the sleeve 11 and the fixing frame 7, improving the flexibility of the structure. The bearing seat 24 sleeved on the surface of the transmission shaft 13 is fixedly connected to the mounting frame 1, reducing friction and loss during transmission. The insulator 25 fixed on the surface of the second connecting rod 15 effectively ensures electrical safety.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-voltage switch linkage opening and closing mechanism, characterized in that: It includes a mounting bracket (1) for fixing the equipment, and a power mechanism for opening and closing the circuit is fixedly connected to the front side of the mounting bracket (1), and a connection structure for connecting the opening and closing circuit is movably connected to the right side of the power mechanism. The rear side of the connection structure is fixedly connected to the opening and closing structure, and both sides of the opening and closing structure are movably connected to the wiring terminals (2). There are three sets of wiring terminals (2), and the bottom of the wiring terminals (2) is fixedly connected to the top of the mounting bracket (1).

2. The high-voltage switch linkage opening and closing mechanism according to claim 1, characterized in that: The power mechanism includes a servo motor (3), the output end of which is fixedly connected to a screw (4), the surface of which is threadedly connected to a screw sleeve (5), the surface of which is fixedly connected to a movable shell (6), the right side of which is fixedly connected to a connecting structure, the surface of which is fixedly connected to a fixing frame (7), and the rear side of which is fixedly connected to the front side of the mounting frame (1).

3. The high-voltage switch linkage opening and closing mechanism according to claim 2, characterized in that: The connection structure includes a hexagonal sleeve (8), which is fitted onto the surface of the opening and closing structure. A connecting plate (9) is fixedly connected to the bottom of the hexagonal sleeve (8). A fixed shaft (10) is movably connected inside the connecting plate (9). A sleeve (11) is fixedly connected to the surface of the fixed shaft (10). The surface of the sleeve (11) is movably connected to the interior of the connecting plate (9). The left side of the sleeve (11) is fixedly connected to the right side of the fixing frame (7).

4. The high-voltage switch linkage opening and closing mechanism according to claim 3, characterized in that: The opening and closing structure includes a hexagonal block (12), which is located inside a hexagonal sleeve (8). A drive shaft (13) is fixedly connected to the rear side of the hexagonal block (12). The rear side of the drive shaft (13) passes through the mounting bracket (1) and extends into the interior of the mounting bracket (1). A first connecting rod (14) is fixedly connected to the surface of the drive shaft (13). A second connecting rod (15) is movably connected to the top of the first connecting rod (14) via a first rotating shaft. A contact rod (16) is movably connected to the top of the second connecting rod (15) via a second rotating shaft. A fixed connector (17) is movably connected to the left side of the contact rod (16) via a third rotating shaft. The fixed connector (17) is fixedly connected to the left side terminal (2). A movable connector (18) is snapped onto the right side of the contact rod (16). The movable connector (18) is fixedly connected to the right side terminal (2).

5. A high-voltage switch linkage opening and closing mechanism according to claim 2, characterized in that: The surface of the movable shell (6) is covered with a protective shell (19). The left side of the protective shell (19) is fixedly connected to the right side of the fixed frame (7). The inside of the protective shell (19) is fixedly connected with a reinforcing sleeve (20) for reinforcing the connection with the movable shell (6). The inside of the reinforcing sleeve (20) is movably connected to the surface of the movable shell (6).

6. The high-voltage switch linkage opening and closing mechanism according to claim 4, characterized in that: The top of the hexagonal sleeve (8) is provided with a screw (21) for limiting the hexagonal sleeve (8). The threaded end of the screw (21) passes through the hexagonal sleeve (8) and extends to the surface of the hexagonal block (12). The left side of the connecting plate (9) is provided with an opening (22) for use with the sleeve (11) and the fixing bracket (7). The inside of the connecting plate (9) is provided with a through hole (23) for use with the fixing shaft (10). The front and rear sides of the surface of the drive shaft (13) are both provided with bearing seats (24). The surface of the bearing seat (24) is fixedly connected to the surface of the mounting bracket (1). The surface of the second connecting rod (15) is fixedly connected with an insulator (25).

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