A low-voltage circuit breaker for a photovoltaic switch

Abstract

The present invention discloses a low-voltage circuit breaker for a photovoltaic switch, which includes a low-voltage circuit breaker body and a pluggable fixed shell arranged on the right side of the low-voltage circuit breaker body. Two movable first transparent shells and second transparent shells are arranged on the left side of the fixed shell. In the present invention, by rotating the rotating block, the first transparent shell and the second transparent shell can cover the switch on the low-voltage circuit breaker, avoiding accidental touch during use. The electric push rod drives the arc-shaped locking block to move up and down, so that the arc-shaped locking block locks the limiting groove on the rotating block through the limiting block. When the low-voltage circuit breaker is disconnected and the maintenance personnel repair the faulty circuit, it can prevent the protection switch from being pushed to the on position by people who are unaware of the situation, avoiding the phenomenon of electric shock to the maintenance staff who are in the process of repair. Moreover, only the maintenance personnel can separate the arc-shaped locking block and the rotating block, thereby unlocking and operating the switch on the low-voltage circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage circuit breakers, and particularly to a low-voltage circuit breaker for a photovoltaic switch. Background Art

[0002] A low-voltage circuit breaker, also known as an automatic air switch, is mainly used in AC and DC low-voltage power grids. It can be used to manually or electrically switch the circuit on and off, and can protect the circuit or electrical equipment from overload, short circuit, and undervoltage. It can also be used to start a motor infrequently. It is an important control and protection electrical appliance, and a low-voltage circuit breaker is usually used in daily photovoltaic switches.

[0003] According to the application number: CN201620716377.1, a low-voltage circuit breaker aims to solve the problem that the finger is likely to slip off the control switch during closing of the existing low-voltage circuit breaker. The key points of its technical solution are: a low-voltage circuit breaker includes a circuit breaker body and a control switch. The control switch includes a handle part. A clamping mechanism is provided on the circuit breaker body. The clamping mechanism includes a clamping rod rotatably connected to the circuit breaker body, a clamping buckle fixed at the end of the clamping rod, and a buckling component; the buckling component includes a limiting plate fixed on the side wall of the handle part, a buckling plate rotatably connected to the side wall of the handle part, an elastic member, and a buckling groove formed between the limiting plate and the buckling plate. The clamping rod is buckled in the buckling groove when the handle part is perpendicular to the circuit breaker body, and the clamping buckle abuts against the side wall of the buckling plate.

[0004] The low-voltage circuit breaker in the above case does not have a protective effect, resulting in the switch on the low-voltage circuit breaker always being exposed to the outside. It will be accidentally touched during use, resulting in incorrect operation. Moreover, when the low-voltage circuit breaker is disconnected and the maintenance personnel repair the faulty circuit, the protection switch is pushed to the closed position by someone who does not know the situation, causing electric shock or even death to the staff who are repairing, increasing the potential safety hazard and reducing the safety. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-voltage circuit breaker for a photovoltaic switch to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A low-voltage circuit breaker for a photovoltaic switch, comprising a low-voltage circuit breaker body, and a pluggable fixed shell arranged on the right side of the low-voltage circuit breaker body. Two movable first transparent shells and second transparent shells are arranged on the left side of the fixed shell. A connection shell is installed on the right side of the fixed shell. An electrically actuated push rod that can be locked is installed on the top of the inner wall of the connection shell. It also includes mounting blocks, the number of the mounting blocks is two and they are respectively arranged on the right sides of the top and bottom of the low-voltage circuit breaker body. Fastening bolts that are threadedly connected to the low-voltage circuit breaker body are arranged on the mounting blocks. A clamping block is installed on the left side of the mounting block. A clamping groove is opened on the right side of the low-voltage circuit breaker body corresponding to the clamping block. Support blocks are installed on the mutually remote sides of the two mounting blocks. A fixed block is installed on the front of the support block. The side of the fixed block close to the fixed shell is fixedly connected to the fixed shell. A forward rotation threaded rod is rotatably connected through a bearing in a groove on the top of the inner wall of the fixed shell. A reverse rotation threaded rod is rotatably connected through a bearing in a groove on the bottom of the inner wall of the fixed shell. The bottom end of the forward rotation threaded rod and the top end of the reverse rotation threaded rod are fixedly connected through a fixed shaft.

[0007] Preferably, it further includes a rotating block, the rotating block is arranged on the right side of the fixed shell. A moving block is installed at the bottom end of the electrically actuated push rod. Adjusting blocks are installed on the front and rear sides of the bottom of the moving block. The bottom of the adjusting block penetrates through the connection shell and extends to its outside. An arc-shaped locking block is arranged on the top of the rotating block. A limiting block is installed at the bottom of the arc-shaped locking block. A limiting groove is opened on the top of the rotating block corresponding to the limiting block.

[0008] Preferably, a moving plate is installed on the top of the arc-shaped locking block. The top of the moving plate is fixedly connected to the bottom of the adjusting block. A label pasting plate is arranged above the moving plate. The side of the label pasting plate close to the adjusting block is fixedly connected to the adjusting block. The label pasting plate is used for pasting fonts in equipment maintenance.

[0009] Preferably, a rotating shaft is installed on the left side of the rotating block. The left end of the rotating shaft penetrates through the fixed shell and extends to its inside. A driving gear is installed at the left end of the rotating shaft. A driven gear that meshes with the driving gear is installed on the surface of the fixed shaft corresponding to the driving gear.

[0010] Preferably, threaded blocks are threadedly connected to the surfaces of the forward rotation threaded rod and the reverse rotation threaded rod. The left sides of the threaded blocks penetrate through the fixed shell and extend to its outside. The left sides of the two threaded blocks are respectively fixedly connected to the right sides of the first transparent shell and the second transparent shell.

[0011] Preferably, a pressing block is installed at the bottom of the first transparent shell, a slot is opened at the top of the second transparent shell corresponding to the position of the pressing block, a base is arranged inside the slot, and a pressure sensor matched with the pressing block is installed at the top of the base.

[0012] Preferably, fixing rods are installed on both the left and right sides of the bottom of the base, sliding grooves are opened at the bottom of the inner wall of the slot corresponding to the positions of the fixing rods, the bottom ends of the fixing rods sequentially penetrate through the slot and the sliding grooves from top to bottom and extend into the interior of the sliding grooves, and buffer springs are sleeved on the surfaces of the fixing rods.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. By rotating the rotating block, the first transparent shell and the second transparent shell can cover the switch on the low-voltage circuit breaker, avoiding the switch on the low-voltage circuit breaker being always exposed to the outside, preventing it from being accidentally touched during use and avoiding the phenomenon of misoperation. By driving the arc-shaped locking block to move up and down through the electric push rod, the arc-shaped locking block locks the limiting groove on the rotating block through the limiting block. When the low-voltage circuit breaker is disconnected and the maintenance personnel repair the faulty circuit, it can prevent the protection switch from being pushed to the on position by people who don't know the situation, avoiding the phenomenon of electric shock to the maintenance staff during repair, improving safety, reducing potential safety hazards, and enabling only the maintenance personnel to separate the arc-shaped locking block and the rotating block, thereby unlocking and operating the switch on the low-voltage circuit breaker.

[0015] 2. When the pressing block and the pressure sensor are separated and the pressure sensor cannot sense the pressure value, it indicates that the first transparent shell and the second transparent shell are separated, and at this time, the maintenance and supervision personnel of the low-voltage circuit breaker are immediately notified, preventing irrelevant personnel from the outside from opening and closing the low-voltage circuit breaker, further improving safety. By setting the fastening bolts, the mounting block can be detached from the low-voltage circuit breaker, enabling the protection structure of the low-voltage circuit breaker to be detached from it, making it recyclable and improving the flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is an exploded three-dimensional structural diagram of the low-voltage circuit breaker body, the first transparent shell and the second transparent shell of the present invention;

[0018] Figure 3 is a three-dimensional structural schematic diagram of the connection shell, the rotating block, the moving plate and the label pasting plate of the present invention;

[0019] Figure 4 is an exploded three-dimensional structural diagram of the connection shell and the rotating block of the present invention;

[0020] Figure 5 This is an exploded perspective view of the first transparent case and the second transparent case of the present invention;

[0021] Figure 6 This is a structural sectional view of the front view of the present invention;

[0022] Figure 7 This is a structural sectional view of the front view of the fixed case, the connecting case, the limiting groove, the slot and the buffer spring of the present invention;

[0023] Figure 8 This is a structural sectional view of the front view of the fixed case, the rotating block, the annular groove, the annular block and the steel ball of the present invention.

[0024] In the figure: 1 low-voltage circuit breaker body, 2 fixed case, 3 first transparent case, 4 second transparent case, 5 connecting case, 6 electric push rod, 7 mounting block, 8 fastening bolt, 9 clamping block, 10 clamping groove, 11 support block, 12 fixed block, 13 forward rotation threaded rod, 14 reverse rotation threaded rod, 15 fixed shaft, 16 rotating block, 17 moving block, 18 adjusting block, 19 arc locking block, 20 limiting block, 21 limiting groove, 22 moving plate, 23 label pasting plate, 24 rotating shaft, 25 driving gear, 26 driven gear, 27 threaded block, 28 stop block, 29 positioning block, 30 pressing block, 31 slot, 32 base, 33 pressure sensor, 34 fixed rod, 35 sliding groove, 36 buffer spring, 37 annular groove, 38 annular block, 39 steel ball. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1-8 , a low-voltage circuit breaker for a photovoltaic switch, including a low-voltage circuit breaker body 1, and a pluggable fixed case 2 provided on the right side of the low-voltage circuit breaker body 1. Two movable first transparent cases 3 and second transparent cases 4 are provided on the left side of the fixed case 2. A connecting case 5 is fixedly connected to the right side of the fixed case 2, and a lockable electric push rod 6 is fixedly connected to the top of the inner wall of the connecting case 5.

[0027] Further, as shown in the figure, at this time, the low-voltage circuit breaker body 1 is in the open state, and the maintenance and supervision personnel of the low-voltage circuit breaker repair the faulty circuit.

[0028] It further includes mounting blocks 7. The number of the mounting blocks 7 is two, and they are respectively arranged on the right sides of the top and bottom of the low-voltage circuit breaker body 1. One side of the mounting block 7 close to the low-voltage circuit breaker body 1 is in contact with the low-voltage circuit breaker body 1. A fastening bolt 8 threadedly connected to the low-voltage circuit breaker body 1 is arranged on the mounting block 7. Support blocks 11 are fixedly connected to the mutually remote sides of the two mounting blocks 7. A fixing block 12 is fixedly connected to the front of the support block 11. One side of the fixing block 12 close to the fixing shell 2 is fixedly connected to the fixing shell 2.

[0029] Furthermore, a clamping block 9 is fixedly connected to the left side of the mounting block 7. A clamping groove 10 is formed in the right side of the low-voltage circuit breaker body 1 at a position corresponding to the clamping block 9. One side of the clamping block 9 close to the clamping groove 10 penetrates through the clamping groove 10 and extends into its interior. By providing the clamping block 9 and the clamping groove 10, the stability of the connection between the mounting block 7 and the low-voltage circuit breaker body 1 is improved.

[0030] Furthermore, loosen the fastening bolt 8, and then pull the mounting block 7 to the right, so that the clamping block 9 and the clamping groove 10 are separated, the mounting block 7 and the low-voltage circuit breaker body 1 are separated, and the two transparent shells and the low-voltage circuit breaker body 1 are separated, and then the disassembly can be completed.

[0031] A forward-rotating threaded rod 13 is rotatably connected to the groove at the top of the inner wall of the fixing shell 2 through a bearing, and a reverse-rotating threaded rod 14 is rotatably connected to the groove at the bottom of the inner wall of the fixing shell 2 through a bearing. The bottom end of the forward-rotating threaded rod 13 is fixedly connected to the top end of the reverse-rotating threaded rod 14 through a fixing shaft 15.

[0032] It further includes a rotating block 16. The rotating block 16 is arranged on the right side of the fixing shell 2. The left side of the rotating block 16 is in rotational contact with the right side of the fixing shell 2. The bottom end of the electric push rod 6 is fixedly connected to a moving block 17. Adjusting blocks 18 are fixedly connected to the front and rear sides of the bottom of the moving block 17. The bottom of the adjusting block 18 penetrates through the connecting shell 5 and extends to its outside. An arc-shaped locking block 19 is arranged on the top of the rotating block 16. The bottom of the arc-shaped locking block 19 is in contact with the top of the rotating block 16. A limiting block 20 is fixedly connected to the bottom of the arc-shaped locking block 19. A limiting groove 21 is formed in the top of the rotating block 16 at a position corresponding to the limiting block 20. The bottom of the limiting block 20 penetrates through the limiting groove 21 and extends into its interior to be in contact with the inner wall of the limiting groove 21. A moving plate 22 is fixedly connected to the top of the arc-shaped locking block 19. The top of the moving plate 22 is fixedly connected to the bottom of the adjusting block 18. A label pasting plate 23 is arranged above the moving plate 22. One side of the label pasting plate 23 close to the adjusting block 18 is fixedly connected to the adjusting block 18. The label pasting plate 23 is used for pasting the words in equipment maintenance. When the label pasting plate 23 is located outside the connecting shell 5, other people outside can directly see the words in equipment maintenance pasted on the label pasting plate 23.

[0033] Further, when there is no fault in the circuit and no maintenance is required, at this time, the label paste board 23, the arc-shaped locking block 19 and the limiting block 20 are located inside the connection shell 5.

[0034] Further, a signal receiver and a signal transmitter are respectively fixedly connected to the left and right sides of the top of the inner wall of the connection shell 5. The central processor is fixedly connected to the top of the left side of the inner wall of the connection shell 5. The storage battery is fixedly connected to the top of the right side of the inner wall of the connection shell 5. The storage battery supplies power to the electrical appliances. The electric push rod 6, the signal receiver and the signal transmitter are respectively electrically connected to the central processor. The low-voltage circuit breaker maintenance personnel are electrically connected to the signal receiver through the mobile phone APP. The signal transmitter and the maintenance personnel are electrically connected through the mobile phone APP. And the control circuit can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art and will not be elaborated here.

[0035] The left side of the rotating block 16 is fixedly connected to a rotating shaft 24. The left end of the rotating shaft 24 penetrates through the fixed shell 2 and extends to its interior. The left end of the rotating shaft 24 is fixedly connected to a driving gear 25. A driven gear 26 meshing with the driving gear 25 is fixedly connected to the surface of the fixed shaft 15 corresponding to the position of the driving gear 25. Threaded blocks 27 are threadedly connected to the surfaces of the forward rotation threaded rod 13 and the reverse rotation threaded rod 14. The left sides of the threaded blocks 27 penetrate through the fixed shell 2 and extend to its outside. The left sides of the two threaded blocks 27 are respectively fixedly connected to the right sides of the first transparent shell 3 and the second transparent shell 4. The bottom of the first transparent shell 3 is in contact with the top of the second transparent shell 4. The right sides of the first transparent shell 3 and the second transparent shell 4 are respectively in sliding contact with the fixed shell 2. The left sides of the first transparent shell 3 and the second transparent shell 4 are respectively in sliding contact with the low-voltage circuit breaker body 1.

[0036] Further, stoppers 28 are provided on the top of the inner wall of the first transparent shell 3 and the bottom of the inner wall of the second transparent shell 4. The stopper 28 at the top is in contact with the top of the inner wall of the first transparent shell 3. The stopper 28 at the bottom is in contact with the bottom of the inner wall of the second transparent shell 4. Positioning blocks 29 are fixedly connected to the mutually remote sides of the two stoppers 28. The side of the positioning block 29 close to the support block 11 is fixedly connected to the support block 11. By providing the stoppers 28 and the positioning blocks 29, the stability of the up and down movement of the first transparent shell 3 and the second transparent shell 4 is improved.

[0037] By rotating the rotary block 16, the first transparent shell 3 and the second transparent shell 4 can cover the switch on the low-voltage circuit breaker, preventing the switch on the low-voltage circuit breaker from always being exposed to the outside, avoiding accidental touch during use, and preventing the phenomenon of incorrect operation. By driving the arc-shaped locking block 19 to move up and down through the electric push rod 6, the arc-shaped locking block 19 locks the limiting groove 21 on the rotary block 16 through the limiting block 20. When the low-voltage circuit breaker is disconnected and the maintenance personnel repair the faulty circuit, it prevents the protection switch from being pushed to the on position by people who are unaware of the situation, avoiding the phenomenon of electric shock to the maintenance staff who are repairing, improving safety, reducing potential safety hazards, and enabling only the maintenance personnel to separate the arc-shaped locking block 19 and the rotary block 16, thereby unlocking and operating the switch on the low-voltage circuit breaker.

[0038] A pressing block 30 is fixedly connected to the bottom of the first transparent shell 3. A slot 31 is provided at the top of the second transparent shell 4 corresponding to the position of the pressing block 30. A base 32 is arranged inside the slot 31. The surface of the base 32 is in sliding contact with the inner wall of the slot 31. A pressure sensor 33 used in cooperation with the pressing block 30 is fixedly connected to the top of the base 32. The bottom of the pressing block 30 is in contact with the top of the pressure sensor 33. Fixing rods 34 are fixedly connected to both the left and right sides of the bottom of the base 32. A sliding groove 35 is provided at the bottom of the inner wall of the slot 31 corresponding to the position of the fixing rods 34. The bottom ends of the fixing rods 34 sequentially penetrate through the slot 31 and the sliding groove 35 from top to bottom and extend into the interior of the sliding groove 35. A buffer spring 36 is sleeved on the surface of the fixing rods 34. By setting the buffer spring 36, the rigid collision generated when the pressing block 30 moves downward and the pressure sensor 33 is reduced. Due to the elastic force of the buffer spring 36, the pressure sensor 33 has a certain buffer force.

[0039] Furthermore, when the first transparent shell 3 and the second transparent shell 4 are separated, the pressing block 30 and the pressure sensor 33 are separated. The pressure sensor 33 cannot sense the pressure value. The pressure sensor 33 transmits the signal to the central processing unit, and the central processing unit transmits the signal to the mobile APP of the low-voltage circuit breaker maintenance and supervision personnel through the signal transmitter, facilitating the notification of the low-voltage circuit breaker maintenance and supervision personnel that the first transparent shell 3 and the second transparent shell 4 are opened.

[0040] Furthermore, an annular groove 37 is provided inside the fixed shell 2 on the surface of the rotating shaft 24. An annular block 38 is fixedly connected to the surface of the rotating shaft 24 corresponding to the position of the annular groove 37. Steel balls 39 are rotatably connected to the surface of the annular block 38 in the grooves on both the left and right sides. One end of the steel ball 39 close to the inner wall of the annular groove 37 is in rolling contact with the inner wall of the annular groove 37. By setting the annular groove 37 and the annular block 38, the stability of the rotating shaft 24 during rotational movement is improved. By setting the steel balls 39, the friction generated when the annular block 38 contacts the inner wall of the annular groove 37 is reduced.

[0041] Separation occurs between the briquet 30 and the pressure sensor 33. When the pressure sensor 33 fails to sense the pressure value, it indicates that the first transparent case 3 and the second transparent case 4 are separated. At this time, the maintenance and supervision personnel of the low-voltage circuit breaker are immediately notified to prevent unauthorized personnel from operating the opening and closing of the low-voltage circuit breaker, further enhancing safety. By setting the fastening bolts 8, the mounting block 7 can be detached from the low-voltage circuit breaker, enabling the protective structure of the low-voltage circuit breaker to be removed and recycled, thus improving the flexibility during use.

[0042] During use, the maintenance and supervision personnel of the low-voltage circuit breaker repair the faulty circuit. After the maintenance of the circuit by the maintenance and supervision personnel of the low-voltage circuit breaker is completed, the control signal is transmitted to the central processing unit through the signal receiver via the mobile phone APP. The central processing unit activates the electric push rod 6. The electric push rod 6 drives the adjusting block 18 and the label pasting plate 23 to move upward through the moving block 17. The adjusting block 18 drives the arc-shaped locking block 19 to move upward through the moving plate 22. The arc-shaped locking block 19 drives the limiting block 20 to move upward, causing the limiting block 20 to separate from the limiting groove 21, and enabling the arc-shaped locking block 19 to drive the limiting block 20 to move upward into the interior of the connecting shell 5, thus unlocking the rotating block 16.

[0043] Rotate the rotating block 16. The rotating block 16 drives the driving gear 25 and the driven gear 26 to rotate through the rotating shaft 24. The driven gear 26 drives the forward rotation threaded rod 13 and the reverse rotation threaded rod 14 to rotate through the fixed shaft 15, causing the two threaded blocks 27 to move away from each other. The two threaded blocks 27 respectively drive the first transparent case 3 to move upward and the second transparent case 4 to move downward.

[0044] The first transparent case 3 drives the briquet 30 to move upward and separate from the pressure sensor 33, causing the briquet 30 to separate from the slot 31. At this time, the switch on the low-voltage circuit breaker body 1 is exposed to the outside, and the maintenance and supervision personnel of the low-voltage circuit breaker can perform the closing operation on the switch.

[0045] After the closing is completed, reverse-rotate the rotating block 16 to make the first transparent case 3 move downward and the second transparent case 4 move upward, so that the two transparent cases cover the switch on the low-voltage circuit breaker body 1 again.

[0046] When the maintenance and supervision personnel of the low-voltage circuit breaker find that the circuit fails and needs to be repaired, the low-voltage circuit breaker body 1 trips at this time. The electric push rod 6 is controlled to start through the mobile phone APP. The electric push rod 6 drives the adjusting block 18 and the label pasting plate 23 to move downward. The arc-shaped locking block 19 drives the limiting block 20 to move downward, causing the limiting block 20 to insert into the limiting groove 21, thus completing the locking of the rotating block 16.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low voltage circuit breaker for a photovoltaic switch, characterized in that: The invention comprises a low-voltage circuit breaker body (1), and a pluggable fixed shell (2) arranged on the right side of the low-voltage circuit breaker body (1), wherein two movable first transparent shells (3) and second transparent shells (4) are arranged on the left side of the fixed shell (2), a connecting shell (5) is installed on the right side of the fixed shell (2), and a lockable electric push rod (6) is installed on the top of the inner wall of the connecting shell (5), and also comprises a mounting block (7), wherein the number of the mounting blocks (7) is two and they are respectively arranged on the right side of the top and bottom of the low-voltage circuit breaker body (1), and the mounting blocks (7) are provided with a threaded connection with the low-voltage circuit breaker body (1). A fastening bolt (8) is provided, a supporting block (11) is provided on the side of the two mounting blocks (7) away from each other, a fixing block (12) is provided on the front side of the supporting block (11), a side of the fixing block (12) close to the fixing shell (2) is fixedly connected to the fixing shell (2), a forward-rotating threaded rod (13) is rotatably connected to the groove at the top of the inner wall of the fixing shell (2) via a bearing, a reverse-rotating threaded rod (14) is rotatably connected to the groove at the bottom of the inner wall of the fixing shell (2) via a bearing, and the bottom end of the forward-rotating threaded rod (13) and the top end of the reverse-rotating threaded rod (14) are fixedly connected via a fixing shaft (15).

2. A low voltage circuit breaker for a photovoltaic switch according to claim 1, characterized in that: The invention also comprises a rotating block (16), wherein the rotating block (16) is arranged on the right side of the fixed shell (2), a moving block (17) is installed at the bottom end of the electric push rod (6), and adjustment blocks (18) are installed on both the front and rear sides of the bottom of the moving block (17), and the bottom of the adjustment block (18) passes through the connecting shell (5) and extends to the outside thereof, an arc-shaped locking block (19) is arranged on the top of the rotating block (16), a limit block (20) is installed on the bottom of the arc-shaped locking block (19), and a limit groove (21) is provided on the top of the rotating block (16) and at a position corresponding to the limit block (20).

3. A low voltage circuit breaker for a photovoltaic switch according to claim 2, characterized in that: A movable plate (22) is mounted on the top of the arc-shaped locking block (19); the top of the movable plate (22) is fixedly connected to the bottom of the adjusting block (18); a label pasting plate (23) is arranged above the movable plate (22); a side of the label pasting plate (23) close to the adjusting block (18) is fixedly connected to the adjusting block (18); the label pasting plate (23) is used for pasting fonts during equipment maintenance.

4. A low voltage circuit breaker for a photovoltaic switch according to claim 3, characterized in that: A rotating shaft (24) is installed on the left side of the rotating block (16); the left end of the rotating shaft (24) penetrates the fixed housing (2) and extends into the interior thereof; a driving gear (25) is installed on the left end of the rotating shaft (24); and a driven gear (26) meshing with the driving gear (25) is installed on the surface of the fixed shaft (15) and at a position corresponding to the driving gear (25).

5. A low voltage circuit breaker for a photovoltaic switch according to claim 4, characterized in that: The surfaces of the forward-rotating threaded rod (13) and the reverse-rotating threaded rod (14) are both threadedly connected with a threaded block (27); the left side of the threaded block (27) penetrates the fixed shell (2) and extends to the outside thereof; the left sides of the two threaded blocks (27) are respectively fixedly connected to the right sides of the first transparent shell (3) and the second transparent shell (4).

6. A low voltage circuit breaker for a photovoltaic switch according to claim 5, characterized in that: A pressing block (30) is installed at the bottom of the first transparent shell (3), a slot (31) is provided at the top of the second transparent shell (4) at a position corresponding to the pressing block (30), a base (32) is provided inside the slot (31), and a pressure sensor (33) used in conjunction with the pressing block (30) is installed on the top of the base (32).

7. A low voltage circuit breaker for a photovoltaic switch according to claim 6, characterized in that: Fixed rods (34) are installed on both left and right sides of the bottom of the base (32); a slide groove (35) is provided at the bottom of the inner wall of the slot (31) and at a position corresponding to the fixed rod (34); the bottom end of the fixed rod (34) passes through the slot (31) and the slide groove (35) in sequence from top to bottom and extends to the inside of the slide groove (35); and a buffer spring (36) is sleeved on the surface of the fixed rod (34).

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