A reliable operating mechanism for a dual power transfer switch

Abstract

The utility model discloses a kind of operating mechanisms reliable in operation for dual-power change-over switch, the operating mechanisms reliable in operation for dual-power change-over switch include;Turntable assembly, the turntable assembly has holding state, commutating state and critical state by the holding state turns the commutating state;Guiding piece, and it is arranged in one side of turntable assembly, the two sides of the guiding piece are equipped with trough, wave crest is equipped between two the trough, wherein one the trough is equipped with boost column that can be in horizontal direction activity in guiding piece, the boost column is equipped with rotatable boost link plate, and is hinged in turntable assembly.Main backup power supply switching only needs to drive assembly to execute single action instruction, by boost piece and boost elastic member, after making moving iron core retract, make turntable assembly cross middle line, after drive assembly power-off, drive turntable to continue fast rotation, this design effectively shortens switching window, improves the transient response characteristic of switching action.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to a reliable operating mechanism for a dual power transfer switch. Background Technology

[0002] The dual power transfer switch mainly consists of a main / standby power transfer switch, a transfer actuator, and a controller. The controller monitors and collects the switch status in real time through a sampling line, and drives the actuator based on the monitored status information to realize the switching of power supply, thereby switching from a faulty power supply to a normal power supply. This ensures the stability of the power supply to the load end and the smooth and reliable operation of the load equipment.

[0003] According to the authorized publication number CN212625229U, "Electromagnetic Drive Assembly and Dual Power Transfer Switch," an electromagnetic drive assembly and a dual power transfer switch having the electromagnetic drive assembly are disclosed. The electromagnetic drive assembly includes: a drive member movable from a first position to a second position under the action of an electromagnet, the drive member being biased toward the first position, and a first end of the drive member fixedly connected to the moving iron core of the electromagnet; a lever pivotally mounted on the drive member; and a rotating member connected to the moving contact, such that rotation of the rotating member can drive the moving contact to move, the rotating member further including an actuating portion; wherein the drive member is biased relative to the longitudinal centerline of the moving iron core, and the lever extends toward the rotating member such that the contact position between the lever and the actuating portion is located at or near the longitudinal centerline of the moving iron core.

[0004] The aforementioned technical solution has several drawbacks: For example, the use of two moving iron cores significantly increases the internal space requirements. Given the already limited internal space of the equipment, this design further exacerbates the space constraints. This space compression not only directly restricts the installation positions of other necessary components but also poses serious challenges to their size and the complex functions they can perform, often requiring more precise or customized components to adapt to the confined environment. This undoubtedly increases the overall manufacturing cost and design complexity of the product. Furthermore, the overall structure of this solution is relatively complex. To ensure the reliable operation of the operating mechanism, multiple elastic reset components are required. The increased number of components not only increases assembly complexity but also means more potential failure points, raising the probability of malfunction or failure during long-term use and affecting the overall stability and reliability of the equipment. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this background. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned technical solutions and provide a product with small overall size, low manufacturing cost, low failure rate, and improved operational reliability.

[0006] A reliable operating mechanism for a dual-power transfer switch includes: a turntable assembly having a holding state, a reversing state, and a critical state for transitioning from the holding state to the reversing state; a guide member disposed on one side of the turntable assembly, the guide member having troughs on both sides and a crest between two troughs, one of the troughs having a horizontally movable booster post, the booster post having a rotatable booster connecting plate hinged to the turntable assembly, the booster connecting plate having a booster elastic element acting on the booster post and the turntable assembly; and a drive assembly hinged to one side of the turntable assembly and located near the guide member or on its opposite side. The elastic force of the drive component keeps the turntable assembly in a holding state; the turntable assembly is provided with a trigger sleeve, and trigger devices for feedback position signals and resetting the drive component are provided on both sides of the trigger sleeve; when the drive component drives the turntable assembly to rotate, the turntable assembly is in a critical state that changes from the holding state to the reversing state; when the hinge point between the booster plate and the turntable assembly crosses the crest, the turntable assembly is in a reversing state; the energy release of the booster elastic element drives the turntable assembly to continue rotating in a predetermined direction of rotation, and the booster column is affected by the traction force of the turntable assembly and suddenly jumps to another trough; the reset elastic force of the drive component drives the turntable assembly to complete the switching of main and backup power.

[0007] Preferably, the turntable assembly includes two turntable parts, a drive shaft that rotates with them, and a support plate for carrying the triggering device. The drive shaft is provided with an identification plate, and a drive component is provided above and below the drive shaft. A first connecting post, a second connecting post, and a third connecting post are provided between the two turntable parts. The first connecting post and the third connecting post are located on both sides of the turntable parts. The second connecting post is close to the drive component, and the first connecting post is close to the guide component.

[0008] Preferably, the trigger sleeve is fixed to the drive shaft, a trigger part is provided on one side of the trigger sleeve, and inclined guide surfaces are provided on both sides of the trigger part. The bearing plate is provided with a raised support part that provides support for the trigger device. The support part is also provided with an elastic buckle part that is pressed against the end face of the trigger device. The trigger device is configured as a micro switch.

[0009] Preferably, the turntable component has a connecting part and is hinged to the booster plate. The connecting part is located between the first connecting post and the third connecting post. When the main and backup power supplies are switched, the connecting part is located on the opposite side of the drive assembly or close to the drive assembly.

[0010] Preferably, the driving assembly includes an electromagnet, a retractable moving iron core, and a linkage plate. The electromagnet is provided with a guide rail and is disposed on both sides of the moving iron core. The guide rail is provided with a limiting through hole, and a limiting post is slidably provided in the limiting through hole and passes through the moving iron core and the linkage plate.

[0011] Preferably, the two ends of the linkage plate are respectively hinged to the moving iron core and the first connecting column, and the linkage plate is disposed between the two turntable components.

[0012] Preferably, the booster plate has pressure plates that can move on both ends, and the booster elastic element is disposed between the two pressure plates, so that the pressure plates press tightly against the connecting part or the booster column.

[0013] Preferably, a support member is provided below the guide member, a guide groove is provided on the support member, a plurality of support columns are provided between the guide member and the support member, and a clearance groove is provided on one side of the support member and the guide member to allow the turntable assembly to rotate.

[0014] Preferably, the guide member and the support member are provided with guide grooves, and the crests and troughs are arranged in the guide grooves. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) In this utility model, only one drive component is used to drive the turntable assembly to complete the rotation action. When the moving iron core of the drive component retracts into place, the force of the push elastic component is exactly to prevent the turntable assembly from returning to the initial position due to the resetting of the moving iron core. After the drive component is de-energized, the push elastic component immediately assists in pushing the turntable assembly to continue rotating, so that the part that is hinged with the drive component crosses the center line of the drive component and is stably biased to one side. Then, the elastic reset force inside the drive component becomes the main driving force, causing the turntable assembly to rotate rapidly, thereby accurately and efficiently completing the switching process of the main and backup power supplies. This design not only effectively reduces the overall volume of the operating mechanism, preparing for the miniaturization of the dual power supply conversion switch, but also reduces the number of parts, reduces the existence of potential failure points, and significantly improves the stability of the product during long-term use. At the same time, the simplified structure also effectively improves the assembly efficiency, thereby reducing the overall manufacturing cost, achieving dual optimization of performance and cost, and overcoming the design defects of the technical solutions in the background art.

[0016] (2) In the present invention, the driving component of the technical solution in the background technology needs to be operated twice to complete the switching of the main and backup power. This two-stage switching mode not only significantly prolongs the response time of power switching, but also increases the sensitivity of the system to external electrical interference during the switching window period. However, the operating mechanism design of the present invention only requires a single action command to quickly complete the switching of the main and backup power, greatly compressing the inherent delay of power switching, improving the transient response characteristics of the switching action, and effectively shortening the exposure window of the system to potential electrical noise and interference during the power switching transition, thereby strengthening the dynamic stability and anti-interference margin of the entire power supply system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a reliable operating mechanism for a dual-power transfer switch according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a reliable operating mechanism for a dual-power transfer switch according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a reliable operating mechanism for a dual-power transfer switch according to this utility model. Figure 3 ; Figure 4 This is a top view of the critical state of the reliable operating mechanism for a dual-power transfer switch according to this utility model; Figure 5 This is a top view of the main power supply closing of a reliable operating mechanism for a dual power supply transfer switch according to this utility model. Figure 6 This is a bottom view of the main power supply closing of a reliable operating mechanism for a dual power supply transfer switch according to this utility model. The correspondence between the labels and component names in the attached figures is as follows: Reference numerals: 1. Turntable assembly; 2. Guide component; 3. Drive assembly; 4. Boosting column; 5. Boosting connecting plate; 6. Boosting elastic component; 7. Holding device; 8. Contact assembly; 9. Stationary spring; 11. Turntable component; 12. Drive shaft; 13. Transmission component; 14. First connecting post; 15. Second connecting post; 16. Third connecting post; 17. Trigger sleeve; 18. Triggering device; 19. Bearing plate; 111. Connecting part; 121. Signage; 171. Triggering part; 172. Guiding surface; 191. Support part; 192. Buckle part; 21. Trough; 22. Crest; 23. Guide groove; 24. Support component; 25. Clearance groove; 31. Electromagnet; 32. Moving iron core; 33. Linkage plate; 34. Guide rail; 35. Limiting post; 341. Limiting through hole; 51. Pressure plate. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0021] Reference example Figures 1 to 6A reliable operating mechanism for a dual-power transfer switch includes: a turntable assembly 1 having a holding state, a reversing state, and a critical state for transitioning from the holding state to the reversing state; a guide member 2 disposed on one side of the turntable assembly 1, with troughs 21 on both sides of the guide member 2 and a crest 22 between the two troughs 21, one of the troughs 21 having a booster column 4 that can move horizontally in the guide member 2, the booster column 4 having a rotatable booster connecting plate 5 and hinged to the turntable assembly 1, the booster connecting plate 5 having a booster elastic member 6 that acts on the booster column 4 and the turntable assembly 1; and a drive assembly 3 hinged to one side of the turntable assembly 1 and located near or opposite the guide member 2. On the facade, the elastic force of the drive assembly 3 keeps the turntable assembly 1 in a holding state; the turntable assembly 1 is provided with a trigger sleeve 17, and trigger devices 18 for feeding back position signals and resetting the drive assembly 3 are provided on both sides of the trigger sleeve 17; when the drive assembly 3 drives the turntable assembly 1 to rotate, the turntable assembly 1 is in a critical state of changing from the holding state to the reversing state; when the hinge point between the booster plate 5 and the turntable assembly 1 crosses the crest 22, the turntable assembly 1 is in a reversing state; the booster elastic element 6 releases energy to drive the turntable assembly 1 to continue rotating in the predetermined rotation direction, and the booster column 4 is affected by the traction force of the turntable assembly 1 and jumps to another trough 21; the reset elastic force of the drive assembly 3 drives the turntable assembly 1 to complete the switching of the main and backup power supplies.

[0022] A single drive assembly 3 is sufficient to drive the turntable assembly 1 to rotate. When the moving iron core 32 of the drive assembly 3 retracts into place, the force of the push elastic element 6 precisely prevents the turntable assembly 1 from returning to its initial position due to the resetting of the moving iron core 32. After the drive assembly 3 is de-energized, the push elastic element 6 immediately assists in pushing the turntable assembly 1 to continue rotating, causing the part hinged to the drive assembly 3 to cross the center line of the drive assembly 3 and stably deflect to one side. Subsequently, the elastic resetting force inside the drive assembly 3 becomes the main driving force, causing the turntable assembly 1 to rotate rapidly, thereby accurately and efficiently completing the switching process between the main and backup power supplies. This design not only effectively reduces the overall size of the operating mechanism, preparing for the miniaturization of the dual power transfer switch, but also reduces the number of parts, lowers the potential failure points, and significantly improves the stability of the product during long-term use. At the same time, the simplified structure also effectively improves assembly efficiency, thereby reducing the overall manufacturing cost, achieving a dual optimization of performance and cost, and overcoming the design defects of the technical solutions in the background technology. It is worth mentioning that the turntable assembly 1 includes two turntable parts 11, a drive shaft 12 that rotates with them, and a support plate 19 for supporting the trigger device 18. The drive shaft 12 is provided with a marking plate 121, and drive components 13 are provided above and below the drive shaft 12. A first connecting post 14, a second connecting post 15, and a third connecting post 16 are provided between the two turntable parts 11. The first connecting post 14 and the third connecting post 16 are located on both sides of the turntable part 11. The second connecting post 15 is close to the drive assembly 3, and the first connecting post 14 is close to the guide member 2. This switch also includes a vertically extendable... The contact assembly 8 is retracted, and a plurality of stationary springs 9 are disposed on both sides of the contact assembly 8, and a holding device 7 is disposed on the contact assembly 8. The holding device 7 is hinged to the transmission member 13. According to the patent document of Chinese Patent Application No. 202510462015.8, the holding device 7 is hinged to the transmission member 13. The holding device 7 is used to maintain the power state after the turntable assembly 1 rotates and after the main and backup power supplies are switched. The components and connections between the contact assembly 8, the stationary springs 9, and the holding device 7 have been described in the prior application, so they will not be described in detail here. It is worth mentioning that the trigger sleeve 17 is fixedly mounted on the drive shaft 12. The trigger sleeve 17 has a trigger part 171 on one side and inclined guide surfaces 172 on both sides of the trigger part 171. The bearing plate 19 has a raised support part 191 that provides support for the trigger device 18. The support part 191 also has an elastic buckle part 192 that is snapped onto the end face of the trigger device 18. The trigger device 18 is configured as a micro switch. The guide surface 172 facilitates the trigger part 171 to smoothly push the pressing plate 51 of the trigger device 18 during movement, making a pressing action. When the trigger device 18 is pressed, the support plate provides support force for it. The buckle part 192 effectively improves the installation efficiency of the trigger device 18. The trigger device 18 can not only be used to cut off the power supply of the electromagnet 31, but also provide a signal point for external warning devices, such as a warning light when the customer needs to connect an external main or backup power supply. This design effectively improves the product's expandability and practicality. It is worth mentioning that the turntable component 11 is provided with a connecting part 111 and is hinged to the booster plate 5. The connecting part 111 is located between the first connecting post 14 and the third connecting post 16. When the main and backup power supplies are switched, the connecting part 111 is located on the opposite side of the drive assembly 3 or close to the drive assembly 3. When the backup power supply is opened and the main power supply is closed, the backup power supply is the uppermost power supply and the main power supply is the lowermost power supply. The connecting part 111 is located on the opposite side of the drive assembly 3. When the backup power supply is closed and the main power supply is opened, the connecting part 111 is close to the drive assembly 3. It is worth mentioning that the drive assembly 3 includes an electromagnet 31, a retractable moving iron core 32, and a linkage plate 33. The electromagnet 31 is provided with a guide rail 34, which is set on both sides of the moving iron core 32. The guide rail 34 is provided with a limiting through hole 341, and a limiting post 35 is slidably provided in the limiting through hole 341, passing through the moving iron core 32 and the linkage plate 33. The electromagnet is provided with a reset spring to push the moving iron core 32 to reset. This is prior art, and the specific internal structure is described in the patent document with application number 202510462015.8, so it will not be described in detail here. The limiting through hole 341, together with the limiting post 35, limits the range of motion of the moving iron core 32. The drive assembly of the technical solution in the background technology needs to operate twice to complete the switching of the main and backup power. This two-stage switching mode not only significantly extends the time required for the main and backup power supplies to switch, but also improves the efficiency of the power supply. The response time of power switching is reduced, and the system's sensitivity to external electrical interference is also increased during the switching window. This means that during the short period when the power switching action is in progress, the entire power system or equipment is more susceptible to the effects of unwanted electrical signals or fluctuations from the outside. During this period, the system may be in a state of voltage instability, power outage, or initial power supply from the backup power source. The operating mechanism design of this technical solution can quickly complete the switching between the main and backup power sources with only a single action command, which greatly reduces the inherent delay of power switching, improves the transient response characteristics of the switching action, and effectively shortens the exposure window of the system to potential electrical noise and interference during the power switching transition, thereby strengthening the dynamic stability and anti-interference margin of the entire power supply system. It is worth mentioning that the two ends of the linkage plate 33 are respectively hinged to the moving iron core 32 and the first connecting column 14. The linkage plate 33 is set between the two turntable parts 11, and the linkage plate 33 transmits the pushing force of the moving iron core 32 to the first connecting column 14. It is worth mentioning that the booster plate 5 has pressure plates 51 that can move on both ends, and the booster elastic element 6 is arranged between the two pressure plates 51, so that the pressure plates 51 press tightly against the connecting part 111 or the booster column 4. The force of the booster elastic element 6 is transmitted to the connecting part 111 and the booster column 4 through the pressure plates 51. The booster elastic element 6 can be a spring. It is worth mentioning that a support member 24 is provided below the guide member 2, and a guide groove 23 is provided on the support member 24. Multiple support columns are provided between the guide member 2 and the support member 24. A clearance groove 25 is provided on one side of the support member 24 and the guide member 2 to allow the turntable assembly 1 to rotate. The support member 24 raises the height of the guide member 2 so that the hinge position of the booster column 4 and the hinge position of the connecting part 111 are on the same horizontal plane. It is worth mentioning that the guide member 2 and the support member 24 are provided with guide grooves 23, and the crests 22 and troughs 21 are set in the guide grooves 23.

[0023] The working principle of this utility model is described as follows: Reference Appendix Figure 1 When the backup power supply is in the open state and the main power supply is in the closed state, and the triggering part 171 has pressed the triggering device 18 on the left side, when the electromagnet 31 is energized, it generates a magnetic attraction force and pulls the moving iron core 32 to retract inward, and drives the turntable 11 to rotate. See attached document Figure 4 As the connecting part 111 gradually approaches the opposite side of the wave crest 22, specifically, as the connecting part 111 gradually moves to the position of the first connecting part 111 in the initial state, the connecting part 111 pushes the pressure plate 51 to move towards the other pressure plate 51, and causes the booster elastic member 6 to gradually squeeze and store energy, and presses the booster column 4 tightly into the initial wave trough 21. At this time, the turntable assembly 1 is in a critical state of changing from the holding state to the reversing state. When the connecting part 111 passes the crest 22, that is, when the moving iron core 32 is fully retracted into place, the force of the push elastic member 6 just prevents the turntable part 11 from returning to its initial position due to the reset of the moving iron core 32. The trigger part 171 moves from the left to the right and triggers the right trigger device 18 to press, thereby cutting off the power supply to the electromagnet 31. As the electromagnet 31 is de-energized, the push elastic member 6 then assists in pushing the turntable part 11 to continue rotating, so that the hinge part between the connecting plate and the first connecting part 111 passes the center line of the moving iron core 32 and is stably biased to one side. See attached document Figure 5 and attached Figure 6 Immediately afterwards, the elastic reset member inside the moving iron core 32 becomes the main driving force, causing the turntable 11 to rotate rapidly. In addition, due to the rapid rotation of the turntable 11, the booster column 4 is affected by the traction force of the connecting part 111, causing the booster column 4 to quickly cross the peak 22 from the initial trough 21 and enter another trough 21, thus preparing for the next main and backup power switching. The contact assembly 8 of the backup power supply quickly contacts the stationary springs 9 on both sides, thus forming a conductive state. The contact assembly 8 of the main power supply quickly moves away from the contact with the stationary springs 9 on both sides, thus cutting off the main circuit. At this time, the connecting part 111 is close to the moving iron core 32, and the second connecting part 111 is in the position of the connecting part 111 in the initial state and is located on the opposite side of the moving iron core 32. Moreover, the above-mentioned main and backup power switching occurs in milliseconds. The above design scheme enables the product to achieve advantages such as small overall size, low manufacturing cost, low failure rate, and improved operational reliability.

[0024] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A reliable operating mechanism for a dual-power transfer switch, characterized in that: include; A turntable assembly (1) has a holding state, a reversing state, and a critical state that transitions from the holding state to the reversing state. A guide (2) is provided on one side of the turntable assembly (1). The guide (2) has troughs (21) on both sides and a peak (22) between the two troughs (21). One of the troughs (21) is provided with a booster column (4) that can move horizontally on the guide (2). The booster column (4) is provided with a rotatable booster connecting plate (5) and is hinged to the turntable assembly (1). The booster connecting plate (5) is provided with a booster elastic element (6) and acts on the booster column (4) and the turntable assembly (1). The drive assembly (3) is hinged to one side of the turntable assembly (1) and is close to or opposite to the guide (2). The elastic force of the drive assembly (3) keeps the turntable assembly (1) in a holding state. The turntable assembly (1) is provided with a trigger sleeve (17), and trigger devices (18) for feeding back position signals and resetting the drive assembly (3) are provided on both sides of the trigger sleeve (17). When the drive component (3) drives the turntable component (1) to rotate, the turntable component (1) is in a critical state of changing from the holding state to the reversing state; When the hinge point between the booster plate (5) and the turntable assembly (1) crosses the wave crest (22), the turntable assembly (1) is put into a reversing state. The energy release of the booster elastic element (6) drives the turntable assembly (1) to continue rotating in the predetermined rotation direction. The booster column (4) is affected by the traction force of the turntable assembly (1) and jumps to another trough (21). The reset elastic force of the drive component (3) drives the turntable component (1) to complete the switching of the main and backup power supplies.

2. The reliable operating mechanism for a dual power supply transfer switch according to claim 1, characterized in that: The turntable assembly (1) includes two turntable parts (11), a drive shaft (12) that rotates with it, and a support plate (19) for carrying the triggering device (18). The drive shaft (12) is provided with an identification plate (121). The drive shaft (12) is provided with a transmission component (13) above and below it. A first connecting post (14), a second connecting post (15), and a third connecting post (16) are provided between the two turntable parts (11). The first connecting post (14) and the third connecting post (16) are located on both sides of the turntable part (11). The second connecting post (15) is close to the drive assembly (3), and the first connecting post (14) is close to the guide component (2).

3. The reliable operating mechanism for a dual power supply transfer switch according to claim 2, characterized in that: The trigger sleeve (17) is sleeved and fixed on the transmission shaft (12). The trigger sleeve (17) has a trigger part (171) on one side and inclined guide surfaces (172) on both sides of the trigger part (171). The bearing plate (19) has a support part (191) that provides support for the trigger device (18) and protrudes. The support part (191) also has an elastic buckle part (192) that is pressed against the end face of the trigger device (18). The trigger device (18) is a micro switch.

4. The reliable operating mechanism for a dual power supply transfer switch according to claim 2, characterized in that: The turntable component (11) is provided with a connecting part (111) and is hinged to the booster plate (5). The connecting part (111) is located between the first connecting post (14) and the third connecting post (16). When the main and backup power supplies are switched, the connecting part (111) is located on the opposite side of the drive assembly (3) or close to the drive assembly (3).

5. The reliable operating mechanism for a dual power supply transfer switch according to claim 2, characterized in that: The drive assembly (3) includes an electromagnet (31), a retractable moving iron core (32), and a linkage plate (33). The electromagnet (31) is provided with a guide rail (34) and is arranged on both sides of the moving iron core (32). The guide rail (34) is provided with a limiting through hole (341). The limiting through hole (341) is slidably provided with a limiting post (35) and passes through the moving iron core (32) and the linkage plate (33).

6. The reliable operating mechanism for a dual power supply transfer switch according to claim 5, characterized in that: The two ends of the linkage plate (33) are respectively hinged to the moving iron core (32) and the first connecting column (14), and the linkage plate (33) is arranged between the two turntable parts (11).

7. The reliable operating mechanism for a dual power supply transfer switch according to claim 4, characterized in that: The booster plate (5) has pressure plates (51) that can move on both ends. The booster elastic element (6) is arranged between the two pressure plates (51) so that the pressure plates (51) are pressed tightly against the connecting part (111) or the booster column (4).

8. The reliable operating mechanism for a dual power supply transfer switch according to claim 1, characterized in that: A support member (24) is provided below the guide member (2), and a guide groove (23) is provided on the support member (24). Multiple support columns are provided between the guide member (2) and the support member (24). A clearance groove (25) for allowing the turntable assembly (1) to rotate is provided on one side of the support member (24) and the guide member (2).

9. The reliable operating mechanism for a dual power supply transfer switch according to claim 1, characterized in that: The guide (2) and support (24) are provided with guide grooves (23), and the crests (22) and troughs (21) are located in the guide grooves (23).

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