A mechanical interlocking dual power automatic transfer switch

Abstract

The present invention relates to a mechanically interlocked dual-power automatic transfer switch, which includes a primary-end circuit breaker for connecting to a primary power source, an interlocking mechanism, and a backup-end circuit breaker for connecting to a backup power source, both of which are connected to the interlocking mechanism. The interlocking mechanism is used to restrict the simultaneous closing of the primary-end circuit breaker and the backup-end circuit breaker. After the primary-end circuit breaker or the backup-end circuit breaker is closed, the interlocking mechanism locks the other circuit breaker so that it cannot be closed, thereby preventing the two circuit breakers from being closed simultaneously due to misoperation, improving the safety of dual-power electricity use, and effectively improving the efficiency of dual-power switching and improving electricity safety.

Description

Technical Field

[0001] The present invention relates to the field of automatic transfer switches, in particular to a mechanical interlocking dual-power automatic transfer switch. Background Art

[0002] As the name suggests, a dual-power automatic transfer switch automatically switches to a backup power source in the event of a sudden power outage, ensuring continued operation without interruption. Simply put, a dual-power automatic transfer switch provides one main power source and one backup power source. In the event of a sudden power outage or failure in the primary power source, the dual-power transfer switch automatically switches to the backup power source (which can also be powered by a generator under low loads), allowing equipment to continue operating normally. It's most commonly used in elevators, fire protection, and surveillance systems. Banks also use UPS uninterruptible power supplies, but their backup power is a battery pack.

[0003] Dual-power automatic transfer switches are primarily used in emergency power supply systems, automatically switching load circuits from one power source to another (backup) power source to ensure continuous and reliable operation of critical loads. Therefore, they are often used in critical power consumption locations, making product reliability extremely important. A failed transfer could result in one of two hazards: a short circuit between the power sources or a power outage (even a temporary blackout) to critical loads. Both of these consequences are severe, not only causing economic losses (production halts and financial crises) but also potentially causing social problems (putting lives and safety at risk). Consequently, developed industrial countries have designated the production and use of automatic transfer switches as key products, subjecting them to restrictions and regulations. Traditional dual-power automatic transfer switches, due to limitations in their transfer mechanism, lack operational stability, making it prone to simultaneous switching of both power sources due to misoperation, posing a potential safety hazard.

[0004] In view of the above-mentioned related technologies, the inventors believe that the existing dual-power automatic transfer switch has insufficient working stability due to the limitations of the transfer operating mechanism, and is prone to the phenomenon of simultaneous closing of dual power supplies due to misoperation, posing a safety hazard to electricity use. Summary of the Invention

[0005] In order to improve the problem that the existing dual power automatic transfer switch has insufficient working stability due to the limitations of the transfer operating mechanism, is prone to the phenomenon of simultaneous closing of dual power supplies due to misoperation, and poses a potential safety hazard in electricity use, the present invention provides a mechanically interlocked dual power automatic transfer switch.

[0006] In a first aspect, the present invention provides a mechanical interlocking dual power automatic transfer switch, which adopts the following technical solution:

[0007] A mechanically interlocked dual-power automatic transfer switch includes a common-end circuit breaker for connecting to a common power source, an interlocking mechanism, and a standby-end circuit breaker for connecting to a standby power source, which are arranged in sequence. Both the common-end circuit breaker and the standby-end circuit breaker are connected to the interlocking mechanism, and the interlocking mechanism is used to limit the simultaneous closing of the common-end circuit breaker and the standby-end circuit breaker.

[0008] By adopting the above technical solution, automatic switching between the normal power supply and the backup power supply is achieved through the setting of the normal end circuit breaker and the backup end circuit breaker, ensuring that the electrical appliances can operate stably, thereby effectively improving the stability of power consumption; through the setting of the interlocking mechanism, after the normal end circuit breaker or the backup end circuit breaker is closed, the interlocking mechanism locks the other circuit breaker so that it cannot be closed, avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual power supply power consumption, and effectively improving the efficiency of dual power supply switching and improving the safety of power consumption.

[0009] Preferably, the common-end circuit breaker and the standby-end circuit breaker have the same structure, and both include a circuit breaker housing, a four-pole terminal, a four-pole outlet terminal, a contact mechanism for controlling the on and off of the four-pole terminal and the four-pole outlet terminal, an operating mechanism for controlling the clutch of the contact mechanism, a traction rod and a tripping mechanism. The four-pole terminal and the four-pole outlet terminal are both connected to the contact mechanism, the operating mechanism is connected to the contact mechanism, and the operating mechanism and the tripping mechanism are both connected to the traction rod.

[0010] By adopting the above technical solution, the setting of the operating mechanism and the contact mechanism facilitates the control of the on and off of the four-pole terminal and the four-pole outlet terminal, facilitates the automatic switching of the normal power supply and the backup power supply, ensures that the electrical appliances can operate stably, and effectively improves the stability of power consumption; through the setting of the traction rod and the tripping mechanism, the operating mechanism and the contact mechanism are limited and controlled, which facilitates the timely resetting of the closing component when an abnormal power consumption condition occurs, avoids the occurrence of accidental power consumption accidents, and effectively improves the safety of power consumption.

[0011] Preferably, the contact mechanism includes a contact shaft rotatably arranged in the circuit breaker housing and three static contact bases, three dynamic contact blades are sequentially arranged on the contact shaft along its length direction, the three dynamic contact blades correspond to the three static contact bases one by one, the three dynamic contact blades are connected to the four-pole terminal, the three static contact bases are connected to the four-pole outlet terminal, the three dynamic contact blades are each provided with a dynamic contact piece, and the three static contact bases are each provided with a static contact piece.

[0012] By adopting the above technical solution and setting the contact shaft, when it is necessary to close the circuit breaker to connect the three-phase electricity, the operating mechanism drives the contact shaft to rotate, so that the three moving contact blades are respectively closed into the three static contact bases. At this time, the moving contact pieces on the moving contact blades abut against the contact pieces on the static contact bases, and the three-phase electricity is connected, achieving the effect of stable and efficient control of the three-phase electricity on and off, and effectively improving the safety of electricity use.

[0013] Preferably, the interlocking mechanism includes an interlocking housing, a first vertical rod, a second vertical rod, a common end limiting rod, a spare end limiting rod, a common end rotating rod and a spare end rotating rod, the first vertical rod and the second vertical rod are coaxially rotatable and arranged in the interlocking housing; the top of the first vertical rod is connected to the common end limiting rod, and the bottom is connected to the spare end rotating rod; the top of the second vertical rod is connected to the spare end limiting rod, and the bottom is connected to the common end rotating rod; one end of the common end limiting rod extends into the common end circuit breaker and is located on one side of the traction rod, so One end of the standby end limit rod extends into the standby end circuit breaker and is located on one side of the traction rod. The connection between the interlock housing and the two circuit breaker housings is provided with a first arc-shaped waist-shaped hole along the movement trajectory of the common end limit rod and the standby end limit rod; the common end rotating rod is connected to the contact rotating shaft of the common end circuit breaker, and the standby end rotating rod is connected to the contact rotating shaft of the standby end circuit breaker. The connection between the interlock housing and the two circuit breaker housings is provided with a second arc-shaped waist-shaped hole along the movement trajectory of the common end rotating rod and the standby end rotating rod.

[0014] By adopting the above technical solution and setting the interlocking mechanism, when the circuit breaker at the common end is closed, the operating mechanism drives the contact shaft to rotate, and the contact shaft drives the moving contact blade to close into the static contact base. At the same time, the contact shaft drives the common end shaft to move downward. At this time, the second vertical rod rotates relative to the first vertical rod, driving the spare end limit rod to move and press the traction rod of the spare end circuit breaker to the limit, so that the closing component of the spare end circuit breaker cannot be closed; the phenomenon of two circuit breakers being closed at the same time due to misoperation is avoided, the safety of dual power supply is improved, and the effect of effectively improving the efficiency of dual power supply switching and improving the safety of power use is achieved; when the common end power supply fails When a fault occurs, the common-end circuit breaker controls the operating mechanism to open, and the common-end rotating shaft resets. At this time, both the common-end circuit breaker and the standby-end circuit breaker are in the open state; at the same time, the standby-end circuit breaker controls the operating mechanism to close the contact mechanism, and the contact rotating shaft of the standby-end circuit breaker drives the standby-end rotating rod to move downward, so that the first vertical rod rotates and drives the common-end limit rod to move, so that the common-end limit rod presses the traction rod of the common-end circuit breaker to a limit position, making it impossible for the common-end circuit breaker to be closed, avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual-power supply power use, and effectively improving the efficiency of dual-power supply switching and improving the safety of power use.

[0015] Preferably, the common end limit rod includes a common limit cross rod, a common limit longitudinal rod and a common limit vertical rod connected in sequence, one end of the common limit cross rod is connected to the common limit vertical rod, and the other end is connected to the top of the first vertical rod; the common end rotating rod includes a first common cross rod, a common vertical rod and a second common cross rod connected in sequence, and the end of the first common cross rod away from the common vertical rod is connected to the top of the second vertical rod; the spare end rotating rod includes a first spare cross rod, a first spare longitudinal rod and a second spare cross rod connected in sequence, and the end of the first spare cross rod away from the first spare longitudinal rod is connected to the bottom of the second vertical rod; a reset rod is horizontally arranged on the interlocking housing, and reset springs are hung at the bottom of the first vertical rod and the second vertical rod, and the bottom of the reset springs are rotatably connected to the reset rod.

[0016] By adopting the above technical solution, the interlocking mechanism is set up so that after the circuit breaker at the common end or the circuit breaker at the standby end is closed, the interlocking mechanism can lock the drawbar of the other circuit breaker so that it cannot be closed, thereby avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual power supply, and achieving the effect of effectively improving the efficiency of dual power supply switching and improving the safety of power supply; by setting the reset spring, it is convenient to reset the interlocking mechanism after the contact mechanism is opened.

[0017] Preferably, the common-end circuit breaker and the standby-end circuit breaker also include a controller, a monitoring device for monitoring three-phase current and voltage data, a display device, and an electric drive component for driving the operating mechanism to move. The monitoring device, display device, and electric drive component are all connected to the controller, and the controller is communicatively connected to a preset cloud platform.

[0018] By adopting the above technical solution, through the setting of the controller, monitoring device and display device, it is convenient to monitor the voltage and current data of the power output of the power supply in use in real time, and display it intuitively through the display device, so that daily maintenance personnel can intuitively understand the power data; through the setting of the electric drive component, it is convenient to control the operating component, realize the automatic completion of the closing and opening operations of the contact mechanism, and realize the effect of intelligent and automatic power switching; in addition, the controller is connected to the pre-set cloud platform for communication, which facilitates the controller to transmit the collected power data to the cloud platform in real time for maintenance personnel to view. At the same time, maintenance personnel can also remotely send instructions to the controller to realize remote control and remote modification of parameters, thereby effectively improving the convenience and practicality of the intelligent automatic transfer switch.

[0019] Preferably, the operating mechanism includes a bracket, a paddle component rotatably arranged on the bracket, and a driving member; a booster spring is connected to the bottom of the paddle component, and the end of the booster spring away from the paddle component is connected to the driving member; one end of the driving member is rotatably connected to the bracket, and the other end is rotatably connected to the contact shaft.

[0020] By adopting the above technical solution, the auxiliary spring and the paddle component are set to facilitate the driving of the contact shaft, making the closing process of the contact mechanism more labor-saving and convenient, and effectively improving the power switching efficiency and stability of the automatic transfer switch.

[0021] Preferably, the electric drive assembly includes a drive motor, a drive gear and a toggle gear, the drive gear is coaxially sleeved on the output shaft of the drive motor, the drive gear is engaged with the toggle gear, the toggle gear is rotatably set on the circuit breaker housing, a drive shaft is fixedly set at the top of the toggle gear near the outside, a paddle shaft is set at the top of the paddle of the paddle component, a drive plate is set between the paddle shaft and the drive shaft, one end of the drive plate is rotatably connected to the drive shaft, and the other end is rotatably connected to the paddle shaft.

[0022] By adopting the above technical solution, through the setting of the motor drive component, the controller controls the drive motor to rotate, driving the drive gear to rotate, and then driving the toggle gear to rotate. The drive shaft on the toggle gear moves as the toggle gear rotates, and the toggle component is toggled by the drive plate, thereby realizing the closing and opening of the drive contact mechanism, and realizing the effect of intelligent and automatic power switching.

[0023] Preferably, a gear sleeve is provided on the outside of the toggle gear along its circumference, the gear sleeve is fixedly arranged on the inner wall of the circuit breaker housing, and an output port for the toggle gear to engage with the drive gear is provided on the gear sleeve; a manual adjustment shaft is rotatably provided on the circuit breaker housing, the bottom of the manual adjustment shaft extends to the circuit breaker and is connected to a manual paddle, one end of the manual paddle is in contact with the drive shaft, and the top end of the manual adjustment shaft extends out of the circuit breaker housing and is provided with an adjustment groove.

[0024] By adopting the above technical solution and setting the gear sleeve, the toggle gear can be protected to prevent foreign objects from affecting the toggle gear, effectively improving the stability of the electric drive component, ensuring the stable automatic opening or closing of the circuit breaker, and effectively improving the service life of the electric drive component; by manually adjusting the shaft and the manual paddle setting, the owner and daily maintenance personnel can still manually control the closing of the circuit breaker and complete the power conversion work even when the electric drive component fails, ensuring that users can use electricity stably and safely, improving the safety of dual power supply use, and achieving the effect of improving the safety of electricity use.

[0025] Preferably, both the common-end circuit breaker and the standby-end circuit breaker are provided with an opening and closing indicating device for indicating the closing state of the contact mechanism, and the opening and closing indicating device comprises an indicating device housing, a guide block slidingly arranged in a vertical direction, a triggering block slidingly arranged in a horizontal direction and a micro switch; a guide rod is provided at the bottom of the guide block in a vertical direction, one end of the guide rod extends out of the indicating device housing and abuts against the top of the moving contact blade, and a limiting spring is provided at the top of the guide block in a vertical direction; guide sliders are provided on both sides of the thickness direction of the triggering block, and a guide slot for sliding the guide slider is provided on the indicating device housing in a horizontal direction, a limiting slot for accommodating the limiting spring is provided on the side of the triggering block close to the limiting spring, and the triggering block is away from the limiting spring. A trigger spring is provided on one side; a trigger slope is provided on one end of the bottom of the trigger block close to the guide block, and a guide slope is provided on the top of the guide block close to the trigger block, and the trigger slope abuts against the guide slope; an indicating slide hole is provided on the top of the shell of the indicating device, and a trigger slider is provided on the top of the trigger block. The trigger slider is slidably set in the indicating slide hole and the top of the trigger block extends out of the indicating device shell and is connected to the indicating plate, and the indicating mark is provided on the indicating plate, and an indicating hole for displaying the indicating mark on the indicating plate is provided on the circuit breaker housing; the micro switch is connected to the controller, the micro switch is located on one side of the guide block, and a micro slide groove for accommodating the micro switch is provided at the bottom of the trigger block, and the top of the micro switch is located in the micro slide groove.

[0026] By adopting the above technical solution, through the setting of the separation and closing indicating device, the guide rod abuts against the top of the dynamic contact blade. When the dynamic contact blade is closed into the static contact base, the separation and closing indicating device is in normal state. The guide block and the guide rod naturally hang down under the action of their gravity, and the limit spring is in normal state. At this time, the trigger block is supported by the trigger spring and the guide slider and is tightly attached to the guide block. At this time, the indicator plate indicates the closing through the indicating hole; after the contact mechanism is opened, the dynamic contact blade is lifted and separated from the static contact base, and the guide rod is lifted up by the passive contact blade to drive the guide block to move upward. The guide inclined surface and the trigger inclined surface slide relative to each other. Driven by the guide block, the trigger block drives the guide slider to slide in the guide slot. At this time, the trigger block slides toward the micro switch, and the micro slot of the trigger block is pressed on the micro switch. The microswitch on the switch chip of the dynamic switch is triggered to send an electrical signal to the controller, and at the same time the trigger block drives the indicator plate to slide, so that the content displayed in the indicator hole of the indicator plate changes to indicate the opening; through the setting of the opening and closing indicator device, the opening and closing status of the two circuit breakers can be intuitively understood, which is convenient for daily maintenance personnel; through the setting of the microswitch, the controller can obtain feedback on whether the contact mechanism is opened or closed after controlling the electric drive component to open and close, which effectively improves the intelligence of the automatic transfer switch, helps the controller to detect the fault of the electric drive component in time, ensures the stable and safe operation of the automatic transfer switch, improves the safety of dual power supply, and effectively improves the efficiency of dual power supply switching and improves the safety of power use.

[0027] In summary, the present invention includes at least one of the following beneficial technical effects:

[0028] 1. Automatic switching between the normal power supply and the backup power supply is achieved through the setting of the normal end circuit breaker and the backup end circuit breaker, ensuring the stable operation of electrical appliances and effectively improving the stability of power consumption; through the setting of the interlocking mechanism, after the normal end circuit breaker or the backup end circuit breaker is closed, the interlocking mechanism locks the other circuit breaker so that it cannot be closed, avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual power supply, and effectively improving the efficiency of dual power supply switching and improving the safety of power consumption.

[0029] 2. Through the setting of the interlocking mechanism, when the circuit breaker at the common end is closed, the operating mechanism drives the contact shaft to rotate, and the contact shaft drives the moving contact blade to close into the static contact base. At the same time, the contact shaft drives the common end shaft to move downward. At this time, the second vertical rod rotates relative to the first vertical rod, driving the spare end limit rod to move and press the traction rod of the spare end circuit breaker to the limit position, so that the closing component of the spare end circuit breaker cannot be closed; avoid the phenomenon of two circuit breakers closing at the same time due to misoperation, improve the safety of dual power supply, and effectively improve the efficiency of dual power supply switching and improve the safety of power use; when the common end power supply fails, the common end The end circuit breaker controls the operating mechanism to open, and the common end shaft resets. At this time, both the common end circuit breaker and the standby end circuit breaker are in the open state; at the same time, the standby end circuit breaker controls the operating mechanism to close the contact mechanism, and the contact shaft of the standby end circuit breaker drives the standby end rotating rod to move downward, so that the first vertical rod rotates and drives the common end limit rod to move, so that the common end limit rod presses the traction rod of the common end circuit breaker to a limit position, making it impossible to close the common end circuit breaker, thereby avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual power supply power consumption, and effectively improving the efficiency of dual power supply switching and improving the safety of power consumption;

[0030] 3. Through the setting of the motor drive component, the controller controls the drive motor to rotate, driving the drive gear, and then driving the toggle gear. The drive shaft on the toggle gear moves with the rotation of the toggle gear, and the drive plate toggles the paddle component, thereby realizing the closing and opening of the drive contact mechanism, realizing the effect of intelligent and automatic power switching;

[0031] 4. Through the setting of the opening and closing indicating device, the guide rod abuts against the top of the dynamic contact blade. When the dynamic contact blade is closed into the static contact base, the opening and closing indicating device is in normal state. The guide block and the guide rod naturally hang down under the action of their gravity, and the limit spring is in normal state. At this time, the trigger block is supported by the trigger spring and the guide slider and is in close contact with the guide block. At this time, the indicator plate indicates the closing through the indicating hole; after the contact mechanism is opened, the dynamic contact blade is lifted and separated from the static contact base, and the guide rod is lifted up by the passive contact blade to drive the guide block to move upward. The guide inclined surface and the trigger inclined surface slide relative to each other. Driven by the guide block, the trigger block drives the guide slider to slide in the guide slot. At this time, the trigger block slides toward the micro switch, and the micro slot of the trigger block presses on the micro switch. The microswitch on the switch chip is triggered to send an electrical signal to the controller, and at the same time the trigger block drives the indicator plate to slide, so that the content displayed in the indicator hole of the indicator plate changes to indicate the opening; through the setting of the opening and closing indicator device, the opening and closing status of the two circuit breakers can be intuitively understood, which is convenient for daily maintenance personnel; through the setting of the microswitch, the controller can obtain feedback on whether the contact mechanism is opened or closed after controlling the electric drive component to open and close, which effectively improves the intelligence of the automatic transfer switch, helps the controller to detect the fault of the electric drive component in time, ensures the stable and safe operation of the automatic transfer switch, improves the safety of dual power supply, and effectively improves the efficiency of dual power supply switching and improves the safety of power use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a mechanical interlocking dual power automatic transfer switch according to an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of the structure of a commonly used end circuit breaker in an embodiment of the present invention;

[0034] Figure 3 is a structural diagram of a contact mechanism in an embodiment of the present invention;

[0035] Figure 4 is a schematic structural diagram of the contact mechanism from another angle in an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the positions of the interlocking mechanism, the common-end circuit breaker, and the standby-end circuit breaker in an embodiment of the present invention;

[0037] Figure 6 is a structural schematic diagram of the interlocking mechanism in an embodiment of the present invention;

[0038] Figure 7 Schematic diagram of the exploded structure of the interlocking mechanism in an embodiment of the present invention;

[0039] Figure 8 2 is a schematic diagram of the internal structure of the interlocking mechanism in an embodiment of the present invention;

[0040] Figure 9 is a schematic structural diagram of an electric drive assembly in an embodiment of the present invention;

[0041] Figure 10 Schematic diagram of the positions of the opening and closing indicating device and the contact mechanism in an embodiment of the present invention;

[0042] Figure 11 2 is a schematic structural diagram of an opening and closing indicator device according to an embodiment of the present invention;

[0043] Figure 12 The invention relates to a mechanical interlocking dual power automatic transfer switch.

[0044] Explanation of reference numerals: 1. common end circuit breaker; 11. circuit breaker housing; 111. indicator hole; 12. four-pole terminal; 13. four-pole outlet terminal; 14. contact mechanism; 141. contact shaft; 142. moving contact blade; 143. moving contact piece; 144. stationary contact base; 145. stationary contact piece; 15. operating mechanism; 151. bracket; 152. paddle component; 153. driving member; 154. assist spring; 16. traction rod; 17. tripping mechanism; 2 , interlocking mechanism; 21, interlocking housing; 211, first arc-shaped waist-shaped hole; 212, second arc-shaped waist-shaped hole; 22, first vertical pole; 23, second vertical pole; 24, common end limit rod; 241, common limit horizontal rod; 242, common limit vertical rod; 243, common limit vertical rod; 25, spare end limit rod; 26, common end rotating rod; 261, first common horizontal rod; 262, common vertical rod; 263, second common horizontal rod; 27, spare end rotating rod; 271 , first spare crossbar; 272, first spare longitudinal bar; 273, second spare crossbar; 28, reset rod; 29, reset spring; 3, spare end circuit breaker; 4, controller; 5, monitoring device; 6, display device; 7, electric drive assembly; 71, drive motor; 72, drive gear; 73, toggle gear; 731, drive shaft; 732, gear sleeve; 733, output port; 74, toggle shaft; 75, drive plate; 76, manual adjustment shaft; 7 61. Adjustment groove; 77. Manual paddle; 8. Opening / closing indicator device; 81. Indicator housing; 811. Guide slide; 812. Indicator slide hole; 82. Guide block; 821. Guide slope; 83. Trigger block; 831. Guide slide; 832. Limiting groove; 833. Trigger slope; 834. Trigger slide; 835. Indicator plate; 836. Micro slide; 84. Micro switch; 85. Guide rod; 86. Limiting spring; 87. Trigger spring. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-12 The present invention is further described in detail. The embodiment of the present invention discloses a mechanical interlocking dual power automatic transfer switch. Figure 1 A mechanically interlocked dual-power automatic transfer switch comprises a common-end circuit breaker 1 for connecting to a common power source, an interlocking mechanism 2, and a standby-end circuit breaker 3 for connecting to a standby power source, which are arranged in sequence. Both the common-end circuit breaker 1 and the standby-end circuit breaker 3 are connected to the interlocking mechanism 2, which is used to restrict the common-end circuit breaker 1 and the standby-end circuit breaker 3 from being closed at the same time. By setting the common-end circuit breaker 1 and the standby-end circuit breaker 3, automatic switching between the common power source and the standby power source is achieved, ensuring that electrical appliances can operate stably, thereby effectively improving the stability of power consumption. By setting the interlocking mechanism 2, after the common-end circuit breaker 1 or the standby-end circuit breaker 3 is closed, the interlocking mechanism 2 locks the other circuit breaker so that it cannot be closed, thereby avoiding the phenomenon of two circuit breakers being closed at the same time due to misoperation, improving the safety of dual-power electricity use, and effectively improving the efficiency of dual-power switching and improving the safety of electricity use.

[0046] Reference Figure 2 The normal-end circuit breaker 1 and the standby-end circuit breaker 3 have the same structure. Both the normal-end circuit breaker 1 and the standby-end circuit breaker 3 include a circuit breaker housing 11, a four-pole terminal 12, a four-pole outlet terminal 13, a contact mechanism 14 for controlling the on / off of the four-pole terminal 12 and the four-pole outlet terminal 13, an operating mechanism 15 for controlling the clutch of the contact mechanism 14, a traction rod 16 and a tripping mechanism 17. The four-pole terminal 12 and the four-pole outlet terminal 13 are both connected to the contact mechanism 14. The operating mechanism 15 is connected to the contact mechanism 14. The operating mechanism 15 and the tripping mechanism 17 are both connected to the traction rod 16. The arrangement of the operating mechanism 15 and the contact mechanism 14 facilitates the control of the on / off of the four-pole terminal 12 and the four-pole outlet terminal 13, facilitates the automatic switching of the normal power supply and the standby power supply, ensures the stable operation of the electrical appliances, and effectively improves the stability of power consumption. By setting the traction rod 16 and the tripping mechanism 17, the operating mechanism 15 and the contact mechanism 14 are limited and controlled, so that the closing component can be reset in time when an abnormal power consumption condition occurs, thereby avoiding the occurrence of accidental power consumption accidents and effectively improving the safety of power consumption.

[0047] Reference Figure 3The contact mechanism 14 includes a contact shaft 141 rotatably disposed within the circuit breaker housing 11 and three stationary contact bases 144. Three movable contact blades 142 are sequentially disposed along the length of the contact shaft, with the three movable contact blades 142 corresponding to the three stationary contact bases 144. The three movable contact blades 142 are connected to the four-pole terminal 12, and the three stationary contact bases 144 are connected to the four-pole outlet terminal 13. Each of the three movable contact blades 142 is provided with a movable contact piece 143, and each of the three stationary contact bases 144 is provided with a stationary contact piece 145. Due to the arrangement of the contact shaft 141, when the circuit breaker needs to be closed to connect the three phases, the operating mechanism 15 drives the contact shaft 141 to rotate, causing the three movable contact blades 142 to respectively close into the three stationary contact bases 144. At this time, the dynamic contact piece 143 on the dynamic contact blade 142 abuts against the contact piece on the static contact base 144, and the three-phase electricity is connected, achieving the effect of stable and efficient control of the three-phase electricity on and off, effectively improving the safety of electricity use.

[0048] Reference Figure 4 The operating mechanism 15 includes a bracket 151, a paddle component 152 rotatably mounted on the bracket 151, and a driver 153. A booster spring 154 is connected to the bottom of the paddle component 152, and the end of the booster spring 154, which is away from the paddle component 152, is connected to the driver 153. The driver 153 is rotatably connected to the bracket 151 at one end and to the contact shaft 141 at the other end. The arrangement of the booster spring 154 and the paddle component 152 facilitates the driving of the contact shaft 141, making the closing process of the contact mechanism 14 more labor-saving and convenient, effectively improving the power switching efficiency and stability of the automatic transfer switch.

[0049] Reference Figure 5-7The interlocking mechanism 2 includes an interlocking housing 21, a first vertical rod 22, a second vertical rod 23, a normal end limit rod 24, a standby end limit rod 25, a normal end rotating rod 26, and a standby end rotating rod 27. The first vertical rod 22 and the second vertical rod 23 are coaxially rotatably arranged in the interlocking housing 21. The top of the first vertical rod 22 is connected to the normal end limit rod 24, and the bottom is connected to the standby end rotating rod 27. The top of the second vertical rod 23 is connected to the standby end limit rod 25, and the bottom is connected to the normal end rotating rod 26. One end of the normal end limit rod 24 extends into the normal end circuit breaker 1 and is located on the side of the traction rod 16. One end of the standby end limit rod 25 extends into the standby end circuit breaker 3 and is located on the side of the traction rod 16. The connection between the interlocking housing 21 and the two circuit breaker housings 11 is provided with a first arc-shaped waist-shaped hole 211 along the movement trajectory of the normal end limit rod 24 and the standby end limit rod 25. The normal-end rotating rod 26 is connected to the contact rotating shaft 141 of the normal-end circuit breaker 1, and the standby-end rotating rod 27 is connected to the contact rotating shaft 141 of the standby-end circuit breaker 3. A second arcuate waist-shaped hole 212 is formed at the connection between the interlock housing 21 and the two circuit breaker housings 11, along the movement trajectory of the normal-end rotating rod 26 and the standby-end rotating rod 27. Due to the interlock mechanism 2, when the normal-end circuit breaker 1 is closed, the operating mechanism 15 rotates the contact rotating shaft 141, which drives the moving contact blade 142 to close into the static contact base 144. Simultaneously, the contact rotating shaft 141 drives the normal-end rotating shaft downward. At this time, the second vertical rod 23 rotates relative to the first vertical rod 22, driving the standby-end limiting rod 25 to move and press the draw rod 16 of the standby-end circuit breaker 3 to the limit position, preventing the closing assembly of the standby-end circuit breaker 3 from closing. The phenomenon of two circuit breakers closing at the same time due to misoperation is avoided, the safety of dual power supply is improved, and the effect of effectively improving the efficiency of dual power supply switching and improving the safety of power supply is achieved. When the common end power supply fails, the common end circuit breaker 1 controls the operating mechanism 15 to open the switch, and the common end shaft is reset. At this time, the common end circuit breaker 1 and the standby end circuit breaker 3 are both in the open state. At the same time, the standby end circuit breaker 3 controls the operating mechanism 15 to close the contact mechanism 14, and the contact shaft 141 of the standby end circuit breaker 3 drives the standby end rotating rod 27 to move downward, so that the first vertical rod 22 rotates and drives the common end limit rod 24 to move, so that the common end limit rod 24 presses the traction rod 16 of the common end circuit breaker 1 to limit, so that the common end circuit breaker 1 cannot be closed. The phenomenon of two circuit breakers closing at the same time due to misoperation is avoided, the safety of dual power supply is improved, and the effect of effectively improving the efficiency of dual power supply switching and improving the safety of power supply is achieved.

[0050] Reference Figure 7 and Figure 8The common end limit rod 24 includes a common limit horizontal rod 241, a common limit vertical rod 242 and a common limit vertical rod 243 connected in sequence. One end of the common limit horizontal rod 241 is connected to the common limit vertical rod 242, and the other end is connected to the top of the first vertical rod 22. The common end rotating rod 26 includes a first common horizontal rod 261, a common vertical rod 262 and a second common horizontal rod 263 connected in sequence. The end of the first common horizontal rod 261 away from the common vertical rod 262 is connected to the top of the second vertical rod 23. The spare end rotating rod 27 includes a first spare horizontal rod 271, a first spare vertical rod 272 and a second spare horizontal rod 273 connected in sequence. The end of the first spare horizontal rod 271 away from the first spare vertical rod 272 is connected to the bottom of the second vertical rod 23. A reset rod 28 is horizontally arranged on the interlocking housing 21, and a reset spring 29 is hung at the bottom of the first vertical rod 22 and the second vertical rod 23. The bottom of the reset spring 29 is rotatably connected to the reset rod 28. The interlock mechanism 2 is configured to lock the drawbar 16 of the other circuit breaker after either the common-side circuit breaker 1 or the standby-side circuit breaker 3 is closed, preventing the other circuit breaker from closing. This prevents the two circuit breakers from closing simultaneously due to misoperation, thereby improving the safety of dual power supply operation and effectively increasing the efficiency of dual power supply switching and safety. The reset spring 29 facilitates resetting the interlock mechanism 2 after the contact mechanism 14 is opened.

[0051] Reference Figure 9 and Figure 12 The common end circuit breaker 1 and the standby end circuit breaker 3 also include a controller 4, a monitoring device 5 for monitoring three-phase current and voltage data, and a display device 6 (refer to Figure 2 ) and an electric drive assembly 7 for driving the operating mechanism 15 to move. The monitoring device 5, the display device 6 and the electric drive assembly 7 are all connected to the controller 4, and the controller 4 is connected to the preset cloud platform for communication. Through the setting of the controller 4, the monitoring device 5 and the display device 6, it is convenient to monitor the voltage and current data of the power output of the power supply in use in real time, and display it intuitively through the display device 6, so that daily maintenance personnel can intuitively understand the power data. Through the setting of the electric drive assembly 7, it is convenient to control the operating assembly, realize the automatic completion of the closing and opening operations of the contact mechanism 14, and realize the effect of intelligent and automatic switching of power. In addition, the controller 4 is connected to the preset cloud platform for communication, which makes it convenient for the controller 4 to transmit the collected power data to the cloud platform in real time for maintenance personnel to view. At the same time, maintenance personnel can also remotely send instructions to the controller 4 to realize remote control and remote modification of parameters, thereby effectively improving the convenience and practicality of the intelligent automatic transfer switch.

[0052] Reference Figure 9The electric drive assembly 7 includes a drive motor 71, a drive gear 72, and a toggle gear 73. The drive gear 72 is coaxially mounted on the output shaft of the drive motor 71 and meshes with the toggle gear 73. The toggle gear 73 is rotatably mounted on the circuit breaker housing 11. A drive shaft 731 is fixedly mounted on the top of the toggle gear 73 near the outside. A toggle shaft 74 is mounted on the top of the paddle of the paddle component 152. A drive plate 75 is disposed between the paddle shaft 74 and the drive shaft 731. One end of the drive plate 75 is rotatably connected to the drive shaft 731, and the other end is rotatably connected to the paddle shaft 74. Through the setting of the motor drive component, the controller 4 controls the driving motor 71 to rotate and drive the driving gear 72 to rotate, and then drives the toggle gear 73 to rotate. The driving shaft 731 on the toggle gear 73 rotates and moves with the toggle gear 73, and the toggle component 152 is toggled through the driving piece 75, thereby realizing the closing and opening of the driving contact mechanism 14, and realizing the effect of intelligent and automatic switching of power supply.

[0053] Reference Figure 9 The toggle gear 73 is circumferentially sleeved with a gear sheath 732. The gear sheath 732 is fixedly mounted on the inner wall of the circuit breaker housing 11. The gear sheath 732 is provided with an output port 733 for the toggle gear 73 to engage with the drive gear 72. The provision of the gear sheath 732 protects the toggle gear 73, preventing foreign objects from affecting the toggle gear 73, effectively improving the stability of the electric drive assembly 7, ensuring the stable automatic opening or closing of the circuit breaker, and effectively increasing the service life of the electric drive component. A manual adjustment shaft 76 is rotatably mounted on the circuit breaker housing 11. The bottom of the manual adjustment shaft 76 extends to the circuit breaker and is connected to a manual paddle 77. One end of the manual paddle 77 abuts against the drive shaft 731. The top of the manual adjustment shaft 76 extends out of the circuit breaker housing 11 and is provided with an adjustment groove 761. By manually adjusting the settings of the rotating shaft 76 and the manual paddle 77, the owner and daily maintenance personnel can still manually control the closing of the circuit breaker and complete the power conversion work even when the electric drive component 7 fails, ensuring that users can use electricity stably and safely, improving the safety of dual power supply, and achieving the effect of improving power safety.

[0054] Reference Figure 10 and Figure 11Both the normal-side circuit breaker 1 and the standby-side circuit breaker 3 are equipped with an opening / closing indicator device 8 for indicating the closing status of the contact mechanism 14. The opening / closing indicator device 8 comprises an indicator housing 81, a vertically slidable guide block 82, a horizontally slidable trigger block 83, and a microswitch 84. A guide rod 85 is vertically positioned at the bottom of the guide block 82. One end of the guide rod 85 extends outside the indicator housing 81 and abuts against the top of the movable contact blade 142. A limit spring 86 is vertically positioned at the top of the guide block 82. Guide slides 831 are positioned on both sides of the trigger block 83 in the thickness direction. A guide slot 811 is horizontally defined in the indicator housing 81 for the guide slides 831 to slide. A limit slot 832 for accommodating the limit spring 86 is defined on the side of the trigger block 83 proximal to the limit spring 86. A trigger spring 87 is positioned on the side of the trigger block 83 distal to the limit spring 86. A trigger bevel 833 is provided at the bottom end of the trigger block 83, near the guide block 82. A guide bevel 821 is provided at the top end of the guide block 82, near the trigger block 83. The trigger bevel 833 abuts against the guide bevel 821. An indicator slide hole 812 is provided at the top of the indicator device housing 81. A trigger slider 834 is provided at the top of the trigger block 83. The trigger slider 834 slides within the indicator slide hole 812. An indicator plate 835 extends from the top of the trigger block 83 and is connected to the indicator device housing 81. An indicator mark is provided on the indicator plate 835. The circuit breaker housing 11 is provided with an indicator hole 111 for displaying the indicator mark on the indicator plate 835. A microswitch 84 is connected to the controller 4. The microswitch 84 is located on one side of the guide block 82. A microslide slot 836 is provided at the bottom of the trigger block 83 to accommodate the microswitch 84. The top of the microswitch 84 is positioned within the microslide slot 836.

[0055] Reference Figure 10 and Figure 11Through the setting of the opening and closing indicator device 8, the guide rod 85 abuts against the top of the dynamic contact blade 142. When the dynamic contact blade 142 is closed into the static contact base 144, the opening and closing indicator device 8 is in normal state. The guide block 82 and the guide rod 85 naturally hang down under the action of their gravity, and the limit spring 86 is in normal state. At this time, the trigger block 83 is supported by the trigger spring 87 and the guide slider 831 and is tightly attached to the guide block 82. At this time, the indicator plate 835 indicates the closing state through the indicator hole 111. After the contact mechanism 14 opens, the moving contact blade 142 is lifted and separated from the static contact base 144. The guide rod 85 is lifted by the moving contact blade 142, driving the guide block 82 upward. The guide slope 821 and the trigger slope 833 slide relative to each other. Driven by the guide block 82, the trigger block 83 drives the guide slider 831 to slide in the guide groove 811. At this time, the trigger block 83 slides toward the micro switch 84. The micro groove 836 of the trigger block 83 presses on the switch piece of the micro switch 84. The micro switch 84 is triggered and sends an electrical signal to the controller 4. At the same time, the trigger block 83 drives the indicator plate 835 to slide, so that the content displayed in the indicator hole 111 of the indicator plate 835 changes, indicating the opening. Through the setting of the opening and closing indicator device 8, the opening and closing status of the two circuit breakers can be intuitively understood, which is convenient for daily maintenance personnel. Through the setting of the micro switch 84, the controller 4 can obtain feedback on whether the contact mechanism 14 is opened or closed after controlling the electric drive component 7 to open or close, which effectively improves the intelligence of the automatic transfer switch, helps the controller 4 to detect the fault of the electric drive component 7 in time, ensures the stable and safe operation of the automatic transfer switch, improves the safety of dual power supply electricity use, and achieves the effect of effectively improving the efficiency of dual power supply switching and improving the safety of electricity use.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A mechanical interlocking dual power automatic transfer switch, characterized by: The invention comprises a common end circuit breaker (1) for connecting to a common power source, an interlocking mechanism (2), and a standby end circuit breaker (3) for connecting to a standby power source, which are arranged in sequence. The common end circuit breaker (1) and the standby end circuit breaker (3) are both connected to the interlocking mechanism (2), and the interlocking mechanism (2) is used to restrict the common end circuit breaker (1) and the standby end circuit breaker (3) from being closed simultaneously. The common-end circuit breaker (1) and the standby-end circuit breaker (3) have the same structure. Both the common-end circuit breaker (1) and the standby-end circuit breaker (3) comprise a circuit breaker housing (11), a four-pole terminal (12), a four-pole outlet terminal (13), a contact mechanism (14) for controlling the on / off of the four-pole terminal (12) and the four-pole outlet terminal (13), an operating mechanism (15) for controlling the on / off of the contact mechanism (14), a traction rod (16), and a tripping mechanism (17). The four-pole terminal (12) and the four-pole outlet terminal (13) are both connected to the contact mechanism (14), the operating mechanism (15) is connected to the contact mechanism (14), and the operating mechanism (15) and the tripping mechanism (17) are both connected to the traction rod (16). The contact mechanism (14) includes a contact shaft (141) rotatably arranged in the circuit breaker housing (11) and three static contact bases (144); three dynamic contact blades (142) are sequentially arranged on the contact shaft (141) along its length direction; the three dynamic contact blades (142) correspond to the three static contact bases (144) in a one-to-one correspondence; the three dynamic contact blades (142) are connected to the four-pole terminal (12); the three static contact bases (144) are connected to the four-pole outlet terminal (13); the three dynamic contact blades (142) are each provided with a dynamic contact piece (143); and the three static contact bases (144) are each provided with a static contact piece (145); The interlocking mechanism (2) comprises an interlocking housing (21), a first vertical rod (22), a second vertical rod (23), a common end limiting rod (24), a standby end limiting rod (25), a common end rotating rod (26) and a standby end rotating rod (27); the first vertical rod (22) and the second vertical rod (23) are coaxially rotatably arranged in the interlocking housing (21); the top of the first vertical rod (22) is connected to the common end limiting rod (24), and the bottom is connected to the standby end rotating rod (27); the top of the second vertical rod (23) is connected to the standby end limiting rod (25), and the bottom is connected to the common end rotating rod (26); one end of the common end limiting rod (24) extends into the common end circuit breaker (1) and is located on one side of the traction rod (16); the standby end limiting rod (25) is connected to the standby end rotating rod (27); the first vertical rod (22) is connected to the common end limiting rod (24), and the bottom ...3) is connected to the standby end limiting rod (25), and the bottom is connected to the common end rotating rod (26); one end of the common end limiting rod (24) extends into the common end circuit breaker (1) and is located on one side of the traction rod (16); the standby end limiting rod (25) is connected to the standby end rotating rod (27); the first vertical rod (22) is connected to the common end limiting rod (24), and the standby end rotating rod (27) is connected to the standby end rotating rod (27); the first vertical rod (22) is connected to the common end limiting rod (24), and the second vertical rod (23) is connected to the standby end limiting rod (25) One end of the active end limiting rod (25) extends into the standby end circuit breaker (3) and is located on one side of the traction rod (16); a first arc-shaped waist-shaped hole (211) is provided at the connection between the interlock housing (21) and the two circuit breaker housings (11) along the moving tracks of the active end limiting rod (24) and the standby end limiting rod (25); the active end rotating rod (26) is connected to the contact rotating shaft (141) of the active end circuit breaker (1), and the standby end rotating rod (27) is connected to the contact rotating shaft (141) of the standby end circuit breaker (3); a second arc-shaped waist-shaped hole (212) is provided at the connection between the interlock housing (21) and the two circuit breaker housings (11) along the moving tracks of the active end rotating rod (26) and the standby end rotating rod (27).

2. The mechanical interlocking dual power automatic transfer switch according to claim 1, characterized in that: The common end limit rod (24) comprises a common limit cross rod (241), a common limit longitudinal rod (242) and a common limit vertical rod (243) connected in sequence, one end of the common limit cross rod (241) is connected to the common limit vertical rod (242), and the other end is connected to the top of the first vertical rod (22); the common end rotating rod (26) comprises a first common cross rod (261), a common vertical rod (262) and a second common cross rod (263) connected in sequence, the end of the first common cross rod (261) away from the common vertical rod (262) is connected to the second vertical rod (23 ) top connection; the spare end rotating rod (27) includes a first spare cross rod (271), a first spare longitudinal rod (272) and a second spare cross rod (273) connected in sequence, and the end of the first spare cross rod (271) away from the first spare longitudinal rod (272) is connected to the bottom of the second vertical rod (23); a reset rod (28) is arranged horizontally on the interlocking housing (21), and reset springs (29) are hung at the bottom of the first vertical rod (22) and the second vertical rod (23), and the bottom of the reset spring (29) is rotatably connected to the reset rod (28).

3. The mechanical interlocking dual power automatic transfer switch according to claim 1, characterized in that: The common-end circuit breaker (1) and the standby-end circuit breaker (3) both further include a controller (4), a monitoring device (5) for monitoring three-phase current and voltage data, a display device (6), and an electric drive assembly (7) for driving the operating mechanism (15) to move. The monitoring device (5), the display device (6), and the electric drive assembly (7) are all connected to the controller (4), and the controller (4) is in communication connection with a preset cloud platform.

4. The mechanical interlocking dual power automatic transfer switch according to claim 3, characterized in that: The operating mechanism (15) comprises a bracket (151), a paddle component (152) rotatably arranged on the bracket (151), and a driving member (153); a booster spring (154) is connected to the bottom of the paddle component (152), and one end of the booster spring (154) away from the paddle component (152) is connected to the driving member (153); one end of the driving member (153) is rotatably connected to the bracket (151), and the other end is rotatably connected to the contact shaft (141).

5. The mechanical interlocking dual power automatic transfer switch according to claim 4, characterized in that: The electric drive assembly (7) comprises a drive motor (71), a drive gear (72) and a toggle gear (73); the drive gear (72) is coaxially sleeved on the output shaft of the drive motor (71); the drive gear (72) is meshed with the toggle gear (73); the toggle gear (73) is rotatably arranged on the circuit breaker housing (11); a drive shaft (731) is fixedly arranged on the top of the toggle gear (73) near the outside; a paddle shaft (74) is arranged on the top of the paddle of the paddle component (152); a drive plate (75) is arranged between the paddle shaft (74) and the drive shaft (731); one end of the drive plate (75) is rotatably connected to the drive shaft (731), and the other end is rotatably connected to the paddle shaft (74).

6. The mechanical interlocking dual power automatic transfer switch according to claim 5, characterized in that: The outer portion of the toggle gear (73) is sheathed with a gear sleeve (732) along its circumference, the gear sleeve (732) is fixedly arranged on the inner wall of the circuit breaker housing (11), and the gear sleeve (732) is provided with an output port (733) for the toggle gear (73) to engage with the drive gear (72); a manual adjustment shaft (76) is rotatably arranged on the circuit breaker housing (11), the bottom of the manual adjustment shaft (76) extending to the circuit breaker is connected to a manual paddle (77), one end of the manual paddle (77) abuts against the drive shaft (731), and the top end of the manual adjustment shaft (76) extends out of the circuit breaker housing (11) and is provided with an adjustment groove (761).

7. The mechanical interlocking dual power automatic transfer switch according to claim 6, characterized in that: The common-end circuit breaker (1) and the standby-end circuit breaker (3) are both provided with an opening / closing indicating device (8) for indicating the closing state of the contact mechanism (14), the opening / closing indicating device (8) comprising an indicating device housing (81), a guide block (82) arranged to slide in a vertical direction, a trigger block (83) arranged to slide in a horizontal direction, and a micro switch (84); a guide rod (85) is provided at the bottom of the guide block (82) in a vertical direction, one end of the guide rod (85) extending out of the indicating device housing (81) and abutting against the top of the movable contact blade (142). The guide block (82) is provided with a limit spring (86) on the top in the vertical direction; the trigger block (83) is provided with guide sliders (831) on both sides in the thickness direction; the indicator device housing (81) is provided with a guide slot (811) for sliding the guide slider (831) in the horizontal direction; the trigger block (83) is provided with a limit slot (832) for accommodating the limit spring (86) on the side close to the limit spring (86); the trigger block (83) is provided with a trigger spring (87) on the side away from the limit spring (86); A trigger slope (833) is provided at one end of the bottom of the trigger block (83) close to the guide block (82), and a guide slope (821) is provided at one end of the top of the guide block (82) close to the trigger block (83), and the trigger slope (833) abuts against the guide slope (821); an indicating sliding hole (812) is provided at the top of the shell of the indicating device housing (81), and a trigger slider (834) is provided at the top of the trigger block (83), and the trigger slider (834) is slidably provided in the indicating sliding hole (812) and extends out of the top of the trigger block (83). The indicating device housing (81) is connected to an indicating plate (835), an indicating mark is provided on the indicating plate (835), and an indicating hole (111) for displaying the indicating mark on the indicating plate (835) is provided on the circuit breaker housing (11); the micro switch (84) is connected to the controller (4), the micro switch (84) is located on one side of the guide block (82), a micro slide groove (836) for accommodating the micro switch (84) is provided at the bottom of the trigger block (83), and the top of the micro switch (84) is located in the micro slide groove (836).

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