Anti-misoperation locking mechanism and unlocking assembly for high-voltage switch

Abstract

The utility model provides a high-voltage switch anti-misoperation locking mechanism and unlocking assembly, and relates to the technical field of high-voltage electrical equipment safety, the high-voltage switch anti-misoperation locking mechanism comprises a high-voltage switch handle, and the bottom of the surface of the high-voltage switch handle is movably connected with a mounting seat connected with a high-voltage switch through a first rotating shaft. And the bottom of the high-voltage switch handle is movably connected with a connecting structure for pushing the high-voltage switch through a second rotating shaft. By arranging the high-voltage switch handle, the mounting seat, the connecting structure and the locking mechanism, the safety and the convenience of high-voltage switch operation can be improved, the high-voltage switch handle can flexibly perform switching operation through the movable connection of the first rotating shaft and the second rotating shaft, meanwhile, the design of the connecting structure is convenient for pushing the high-voltage switch, and the operation is convenient. And the locking mechanism is fixedly connected, so that the misoperation of the high-voltage switch handle is effectively prevented, and the personal safety of operators and the stable operation of equipment are ensured.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage electrical equipment safety technology, and in particular to a high-voltage switch anti-misoperation interlocking mechanism and unlocking component. Background Technology

[0002] High-voltage electrical equipment refers to electrical equipment with a rated voltage exceeding 1000V, playing a crucial role in power systems. Transformers: Used to change the magnitude of AC voltage, enabling the transmission and distribution of electrical energy. There are various types of transformers, such as oil-immersed transformers and dry-type transformers, whose main parameters include rated capacity, rated voltage, and turns ratio. Circuit breakers: Capable of closing, carrying, and interrupting the current of operating circuits under normal or fault conditions. Circuit breakers have strong arc-extinguishing capabilities and breaking capacity, protecting circuits and equipment from damage caused by overloads, short circuits, and other faults. Common types of circuit breakers include vacuum circuit breakers and sulfur hexafluoride circuit breakers. Disconnect switches: Primarily used to isolate power sources, separating high-voltage equipment from energized parts to ensure the safety of maintenance personnel. Instrument transformers: Include current transformers and voltage transformers. Current transformers convert large currents into smaller currents for use by measurement and protection devices; voltage transformers convert high voltages into low voltages, providing signals for measurement, metering, and protection. Surge arresters are used to protect electrical equipment from damage caused by lightning overvoltages and operational overvoltages. When the voltage exceeds a certain value, the surge arrester will conduct, diverting the overvoltage to the ground. High-voltage electrical equipment utilizes insulating media to block current, conducts high-voltage electrical energy through conductors, and combines this with arc-extinguishing devices to control the current flow, thus achieving the transmission, distribution, and protection of electrical energy. The insulating media ensures that no breakdown occurs between the high potential and the ground potential, the conductive system uses large-section conductors to reduce contact resistance, and the arc-extinguishing mechanism is used to extinguish the electric arc.

[0003] In existing technologies, high-voltage electrical equipment requires the use of high-voltage switches. Misoperation of existing high-voltage switches may lead to arcing injuries, equipment damage, or even power grid accidents. At the same time, existing electromagnetic interlocks rely on secondary circuit power supplies and fail when power is cut off. Therefore, a high-voltage switch anti-misoperation interlocking mechanism and unlocking components are 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 anti-misoperation interlocking mechanism and unlocking component, which can prevent misoperation and facilitate manual unlocking, thereby solving the problem that misoperation of existing high-voltage switches may lead to arc damage, equipment damage, or even power grid accidents. At the same time, existing electromagnetic interlocks rely on secondary circuit power supplies and fail when power is cut off.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-voltage switch anti-misoperation locking mechanism and unlocking component, including a high-voltage switch handle, wherein the bottom of the surface of the high-voltage switch handle is movably connected to a mounting base connected to the high-voltage switch via a first rotating shaft, and the bottom of the high-voltage switch handle is movably connected to a connecting structure for pushing the high-voltage switch via a second rotating shaft;

[0006] The right side of the mounting base is fixedly connected to a locking mechanism for preventing misoperation of the high-voltage switch handle.

[0007] Furthermore, the locking mechanism includes a protective shell, the left side of which is fixedly connected to the surface of the mounting base, a positioning pin is movably connected to the left side inside the protective shell, the left side of the positioning pin passes through the mounting base and extends into the interior of the high-voltage switch handle, a slot for cooperating with the positioning pin is opened on the surface of the high-voltage switch handle, and a movable plate is fixedly connected to the right side of the positioning pin surface.

[0008] Furthermore, a guide rod is movably connected inside the positioning pin, and the right side of the guide rod is fixedly connected to the right side of the inner wall of the protective shell. A return spring is sleeved on the surface of the guide rod, and the return spring is located between the moving plate and the protective shell.

[0009] Furthermore, a limiting ring is sleeved on the left side of the surface of the reset spring, and the left side of the limiting ring is fixedly connected to the right side of the moving plate. A limiting rod is movably connected inside the positioning pin, and a sliding groove is opened inside the positioning pin to cooperate with the limiting rod.

[0010] An unlocking component for a high-voltage switch anti-misoperation interlocking mechanism includes a retaining ring, a drive shaft fixedly connected inside the retaining ring, an auger fixedly connected to the surface of the drive shaft, the left side of the auger being fixedly connected to the right side of the retaining ring, a semi-circular baffle fixedly connected to the right side of the auger, and the right side of the drive shaft penetrating through a protective shell and extending to the right side of the protective shell.

[0011] Furthermore, a bearing seat is fixedly connected to the left side of the drive shaft surface, and the left side of the bearing seat is fixedly connected to the surface of the mounting base. A reinforcing sleeve is fitted on the right side of the drive shaft surface, and the surface of the reinforcing sleeve is fixedly connected to the inside of the protective shell. A rotating handle is fixedly connected to the right side of the drive shaft, and an arrow mark is provided on the rotating handle. The protective shell is provided with text markings that cooperate with the arrow mark.

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

[0013] 1. This utility model improves the safety and convenience of high-voltage switch operation by setting a high-voltage switch handle, mounting base, connecting structure and locking mechanism. The movable connection of the first and second rotating shafts allows the high-voltage switch handle to be operated flexibly. At the same time, the design of the connecting structure facilitates the pushing of the high-voltage switch and improves the operating efficiency. The fixed connection of the locking mechanism effectively prevents the misoperation of the high-voltage switch handle and ensures the personal safety of the operator and the stable operation of the equipment.

[0014] 2. This utility model, by setting a locking mechanism, can effectively lock the high-voltage switch handle. The fixed connection between the protective shell and the mounting base ensures the stability of the structure. The cooperation between the positioning pin and the slot prevents the high-voltage switch handle from being operated arbitrarily without authorization, thus enhancing the safety of the equipment. The setting of the movable plate makes it convenient for the staff to operate the positioning pin, thereby realizing the locking and unlocking of the high-voltage switch handle and improving the convenience of operation.

[0015] 3. By setting a guide rod and a return spring, this utility model can ensure the stability and accuracy of the moving plate during the movement process. The movable connection between the guide rod and the positioning pin provides a clear movement path for the moving plate, effectively preventing the moving plate from deviating or shaking. The return spring is located between the moving plate and the protective shell, and can quickly return to the initial position after the moving plate is subjected to external force.

[0016] 4. This utility model, by setting a limiting ring, a limiting rod, and a sliding groove, can effectively limit and stably support the moving plate. The limiting ring is sleeved on the left side of the return spring and, through its fixed connection with the moving plate, prevents the spring from being misaligned, thus ensuring its stability during operation. The limiting rod, which is movably connected inside the positioning pin, works in conjunction with the sliding groove to increase the stability of the positioning pin's movement while limiting its range of motion.

[0017] 5. This utility model ensures structural stability by setting an unlocking component and fixing the retaining ring to the drive shaft. The auger is driven by the drive shaft, which enables the auger to move the moving plate. The left side of the auger is fixedly connected to the right side of the retaining ring, which enhances the stability of the auger during operation and prevents it from shifting or shaking. The semi-circular baffle fixedly connected to the right side causes the moving plate to contact the semi-circular baffle when the moving plate moves to the far right, thereby limiting the movement of the moving plate.

[0018] 6. This utility model enhances the stability and robustness of the drive shaft by incorporating a bearing housing, reinforcing sleeve, handle, arrow markings, and text markings. The fixed connection between the bearing housing and the mounting base, as well as the fixed connection between the reinforcing sleeve and the protective shell, effectively prevents the drive shaft from shaking and shifting during operation, improving the operating accuracy and safety of the equipment. The arrow markings on the handle and the text markings on the protective shell, used in conjunction, allow operators to clearly identify the rotation direction and status of the drive shaft, facilitating operation and control, and improving work efficiency and accuracy. 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 A sectional perspective view of the high-voltage switch handle;

[0022] Figure 3 A sectional perspective view of the protective shell;

[0023] Figure 4 This is a three-dimensional view of the locking mechanism.

[0024] In the diagram: 1. High-voltage switch handle; 2. Mounting base; 3. Connecting structure; 4. Protective shell; 5. Positioning pin; 6. Slot; 7. Moving plate; 8. Guide rod; 9. Return spring; 10. Limit ring; 11. Limit rod; 12. Slide groove; 13. Retaining ring; 14. Drive shaft; 15. Screwdriver; 16. Semi-circular baffle; 17. Bearing seat; 18. Reinforcing sleeve; 19. Rotary handle. 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 anti-misoperation interlocking mechanism and unlocking component includes a high-voltage switch handle 1, a mounting base 2 connected to the high-voltage switch is movably connected to the bottom of the surface of the high-voltage switch handle 1 via a first rotating shaft, and a connection structure 3 for pushing the high-voltage switch is movably connected to the bottom of the high-voltage switch handle 1 via a second rotating shaft.

[0028] The right side of the mounting base 2 is fixedly connected to a locking mechanism for preventing misoperation of the high-voltage switch handle 1.

[0029] Please see Figure 2 , Figure 3 and Figure 4 , Figure 2 A sectional perspective view of the high-voltage switch handle; Figure 3 A sectional perspective view of the protective shell; Figure 4 This is a three-dimensional view of the locking mechanism.

[0030] The locking mechanism includes a protective shell 4, the left side of which is fixedly connected to the surface of the mounting base 2. A positioning pin 5 is movably connected to the left side inside the protective shell 4. The left side of the positioning pin 5 passes through the mounting base 2 and extends into the interior of the high-voltage switch handle 1. A slot 6 is provided on the surface of the high-voltage switch handle 1 to cooperate with the positioning pin 5. A movable plate 7 is fixedly connected to the right side of the surface of the positioning pin 5, which can effectively lock the high-voltage switch handle 1. The fixed connection between the protective shell 4 and the mounting base 2 ensures the stability of the structure. The cooperation between the positioning pin 5 and the slot 6 prevents the high-voltage switch handle 1 from being operated arbitrarily without authorization, thus enhancing the safety of the equipment. The movable plate 7 facilitates the operation of the positioning pin 5 by the staff, thereby realizing the locking and unlocking of the high-voltage switch handle 1 and improving the convenience of operation.

[0031] The positioning pin 5 is internally connected to a guide rod 8. The right side of the guide rod 8 is fixedly connected to the right side of the inner wall of the protective shell 4. A return spring 9 is sleeved on the surface of the guide rod 8. The return spring 9 is located between the moving plate 7 and the protective shell 4, which can ensure the stability and accuracy of the moving plate 7 during the movement. The movable connection between the guide rod 8 and the positioning pin 5 provides a clear movement path for the moving plate 7, effectively preventing the moving plate 7 from deviating or shaking. The return spring 9 is located between the moving plate 7 and the protective shell 4, and can quickly return to the initial position after the moving plate 7 is subjected to external force.

[0032] A limiting ring 10 is fitted on the left side of the surface of the return spring 9. The left side of the limiting ring 10 is fixedly connected to the right side of the moving plate 7. A limiting rod 11 is movably connected inside the positioning pin 5. A sliding groove 12 is opened inside the positioning pin 5 to cooperate with the limiting rod 11, which can effectively limit and stably support the moving plate 7. The limiting ring 10 is fitted on the left side of the return spring 9. Through the fixed connection with the moving plate 7, the spring is prevented from being misaligned, ensuring its stability during operation. The limiting rod 11 movably connected inside the positioning pin 5, in conjunction with the use of the sliding groove 12, increases the stability of the movement of the positioning pin 5, while limiting the range of movement of the positioning pin 5.

[0033] An unlocking component for a high-voltage switch anti-misoperation interlocking mechanism includes a retaining ring 13. A drive shaft 14 is fixedly connected inside the retaining ring 13, and an auger 15 is fixedly connected to the surface of the drive shaft 14. The left side of the auger 15 is fixedly connected to the right side of the retaining ring 13, and a semi-circular baffle 16 is fixedly connected to the right side of the auger 15. The right side of the drive shaft 14 passes through the protective shell 4 and extends to the right side of the protective shell 4. The fixed connection between the retaining ring 13 and the drive shaft 14 ensures the stability of the structure. The auger 15 is driven by the drive shaft 14, enabling the auger 15 to move the moving plate 7. The fixed connection between the left side of the auger 15 and the right side of the retaining ring 13 enhances the stability of the auger 15 during operation and prevents it from deviating or shaking. The semi-circular baffle 16 fixedly connected to the right side causes the moving plate 7 to contact the semi-circular baffle 16 when the moving plate 7 moves to the rightmost position, thereby limiting the movement of the moving plate 7.

[0034] A bearing housing 17 is fixedly connected to the left side of the drive shaft 14. The left side of the bearing housing 17 is fixedly connected to the surface of the mounting base 2. A reinforcing sleeve 18 is fitted onto the right side of the drive shaft 14. The surface of the reinforcing sleeve 18 is fixedly connected to the inside of the protective shell 4. A handle 19 is fixedly connected to the right side of the drive shaft 14. An arrow mark is provided on the handle 19, and text markings that cooperate with the arrow mark are provided on the protective shell 4. This enhances the stability and robustness of the drive shaft 14. The fixed connection between the bearing housing 17 and the mounting base 2, as well as the fixed connection between the reinforcing sleeve 18 and the protective shell 4, effectively prevents the drive shaft 14 from shaking and displacing during operation, improving the operating accuracy and safety of the equipment. The arrow mark on the handle 19 and the text markings on the protective shell 4 work together to allow operators to clearly identify the rotation direction and status of the drive shaft 14, facilitating operation and control, and improving work efficiency and accuracy.

[0035] Working Principle: The working principle of this utility model is to effectively lock and unlock the high-voltage switch handle 1 through a locking mechanism. When the high-voltage switch needs to be operated, it is first unlocked through the unlocking component. The rotating handle 19 of the unlocking component is rotated, driving the transmission shaft 14 and the auger 15 to rotate together. The design of the auger 15 allows it to generate friction with the moving plate 7, thereby driving the moving plate 7 to move to the right. When the moving plate 7 moves to the right, it will drive the positioning pin 5 fixedly connected to it to move together. The positioning pin 5 disengages from the slot 6 on the surface of the high-voltage switch handle 1, thereby unlocking the high-voltage switch handle 1. During the process of the moving plate 7 moving to the right, the return spring 9 is compressed, providing a leftward return force to the moving plate 7. The limit rod 11 moves in the slide groove 12 inside the positioning pin 5, limiting and stabilizing the moving plate 7 to prevent it from shifting or shaking. When the moving plate 7 moves to the far right... The semi-circular baffle 16, which is fixedly connected to the right side of the auger 15, will contact the moving plate 7, thus limiting its movement. At this time, the high-voltage switch handle 1 is fully unlocked. During the unlocking process, the bearing seat 17 and the reinforcing sleeve 18 enhance the stability and robustness of the drive shaft 14, effectively preventing the drive shaft 14 from shaking and displacing during operation. The arrow markings on the handle 19 and the text markings on the protective shell 4 work together to allow the operator to clearly identify the rotation direction and status of the drive shaft 14, facilitating operation and control. When it is necessary to lock the high-voltage switch handle 1, simply rotate the handle 19 in the opposite direction, and the auger 15 will drive the moving plate 7 to move to the left. The positioning pin 5 will re-engage in the slot 6 on the surface of the high-voltage switch handle 1, thereby locking the high-voltage switch handle 1. The return spring 9 gradually returns to its initial state during the movement of the moving plate 7 to the left, providing a restoring force for the next unlocking.

[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 anti-misoperation interlocking mechanism, characterized in that: It includes a high-voltage switch handle (1), the bottom of the surface of the high-voltage switch handle (1) is movably connected to a mounting base (2) connected to the high-voltage switch via a first rotating shaft, and the bottom of the high-voltage switch handle (1) is movably connected to a connection structure (3) for pushing the high-voltage switch via a second rotating shaft; The right side of the mounting base (2) is fixedly connected to a locking mechanism for preventing misoperation of the high-voltage switch handle (1).

2. The high-voltage switch anti-misoperation interlocking mechanism according to claim 1, characterized in that: The locking mechanism includes a protective shell (4), the left side of which is fixedly connected to the surface of the mounting base (2), and a positioning pin (5) is movably connected to the left side inside the protective shell (4). The left side of the positioning pin (5) passes through the mounting base (2) and extends into the interior of the high-voltage switch handle (1). A slot (6) is provided on the surface of the high-voltage switch handle (1) to cooperate with the positioning pin (5). A movable plate (7) is fixedly connected to the right side of the surface of the positioning pin (5).

3. The high-voltage switch anti-misoperation interlocking mechanism according to claim 2, characterized in that: The positioning pin (5) is internally connected to a guide rod (8), the right side of the guide rod (8) is fixedly connected to the right side of the inner wall of the protective shell (4), and a reset spring (9) is sleeved on the surface of the guide rod (8), the reset spring (9) is located between the moving plate (7) and the protective shell (4).

4. The high-voltage switch anti-misoperation interlocking mechanism according to claim 3, characterized in that: A limiting ring (10) is sleeved on the left side of the surface of the reset spring (9). The left side of the limiting ring (10) is fixedly connected to the right side of the moving plate (7). A limiting rod (11) is movably connected inside the positioning pin (5). A sliding groove (12) is opened inside the positioning pin (5) to cooperate with the limiting rod (11).

5. The unlocking component of a high-voltage switch anti-misoperation interlocking mechanism according to any one of claims 1-4, characterized in that: The unlocking assembly includes a retaining ring (13), a drive shaft (14) is fixedly connected inside the retaining ring (13), an auger (15) is fixedly connected to the surface of the drive shaft (14), the left side of the auger (15) is fixedly connected to the right side of the retaining ring (13), a semi-circular baffle (16) is fixedly connected to the right side of the auger (15), and the right side of the drive shaft (14) penetrates the protective shell (4) and extends to the right side of the protective shell (4).

6. The high-voltage switch anti-misoperation interlocking mechanism and unlocking component according to claim 5, characterized in that: A bearing seat (17) is fixedly connected to the left side of the surface of the drive shaft (14). The left side of the bearing seat (17) is fixedly connected to the surface of the mounting base (2). A reinforcing sleeve (18) is fitted on the right side of the surface of the drive shaft (14). The surface of the reinforcing sleeve (18) is fixedly connected to the inside of the protective shell (4). A rotating handle (19) is fixedly connected to the right side of the drive shaft (14). An arrow mark is provided on the rotating handle (19), and a text mark is provided on the protective shell (4) to cooperate with the arrow mark.

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