Low-voltage circuit breaker for photovoltaic switch

Abstract

The invention discloses a low-voltage circuit breaker for a photovoltaic switch, which comprises a low-voltage circuit breaker body and a pluggable fixed shell arranged on the right side of the low-voltage circuit breaker body, and a first transparent shell and a second transparent shell which are movable are arranged on the left side of the fixed shell. According to the 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, so that the switch is prevented from being touched by mistake 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 in the rotating block through the limiting block, and the safety of the low-voltage circuit breaker is improved. When a low-voltage circuit breaker is disconnected and a maintainer carries out maintenance on a fault circuit, the protection switch is prevented from being pushed to be closed by a person who does not know the condition, the phenomenon of electric shock caused by the maintenance worker is avoided, and only the maintainer can separate the arc-shaped locking block from the rotating block, so that the maintenance efficiency is improved. Therefore, the operation on the switch on the low-voltage circuit breaker is unlocked.

Description

Technical Field

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

[0002] Low-voltage circuit breakers, also known as automatic air switches, are mainly used in AC and DC low-voltage power grids. They can open and close circuits manually or electrically, and can protect circuits or electrical equipment from overload, short circuit, and undervoltage. They can also be used to start motors infrequently. They are an important control and protection appliance. Low-voltage circuit breakers are commonly used in daily photovoltaic switches.

[0003] According to the application number: CN201620716377.1, a low-voltage circuit breaker is provided, which aims to solve the problem that fingers of existing low-voltage circuit breakers are prone to slipping off the control switch when closing the circuit. The key points of its technical solution are: a low-voltage circuit breaker, including a circuit breaker body and a control switch, the control switch including a handle part, and 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 buckle fixed at the end of the clamping rod, and a buckle assembly; the buckle assembly includes a limit plate fixed to the side wall of the handle part, a buckle plate rotatably connected to the side wall of the handle part, an elastic member, and a buckle groove formed between the limit plate and the buckle plate, the clamping rod is buckled in the buckle groove when the handle part is perpendicular to the circuit breaker body, and the buckle abuts against the side wall of the buckle 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 being always exposed to the outside world. It may be accidentally touched during use, resulting in erroneous operation. Moreover, when the low-voltage circuit breaker is disconnected for maintenance personnel to repair the faulty circuit, the protective switch is pushed up and closed by personnel who are unaware of the situation, causing electric shock or even death to the maintenance personnel, increasing safety hazards and reducing safety.

[0005] Summary of the Invention 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 technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: 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 connecting shell is installed on the right side of the fixed shell, and a lockable electric push rod is installed on the top of the inner wall of the connecting shell.

[0007] Preferably, it further includes a mounting block, wherein the number of the mounting blocks is two and they are respectively arranged on the right side of the top and bottom of the low-voltage circuit breaker body, the mounting block is provided with a fastening bolt threadedly connected to the low-voltage circuit breaker body, a clamping block is installed on the left side of the mounting block, and a clamping groove is opened on the right side of the low-voltage circuit breaker body and at the position corresponding to the clamping block.

[0008] Preferably, a supporting block is installed on the sides of the two mounting blocks that are away from each other, a fixing block is installed on the front side of the supporting block, and a side of the fixing block close to the fixing shell is fixedly connected to the fixing shell.

[0009] Preferably, a forward-rotating threaded rod is rotatably connected to the groove at the top of the inner wall of the fixed shell via a bearing, and a reverse-rotating threaded rod is rotatably connected to the groove at the bottom of the inner wall of the fixed shell via a bearing, and the bottom end of the forward-rotating threaded rod is fixedly connected to the top end of the reverse-rotating threaded rod via a fixed shaft.

[0010] Preferably, it also includes a rotating block, which is arranged on the right side of the fixed shell, a moving block is installed at the bottom end of the electric push rod, and adjusting blocks are installed on the front and rear sides of the bottom of the moving block, the bottom of the adjusting block passes through the connecting shell and extends to the outside thereof, an arc-shaped locking block is arranged on the top of the rotating block, a limiting block is installed on the bottom of the arc-shaped locking block, and a limiting groove is provided on the top of the rotating block and corresponding to the position of the limiting block.

[0011] Preferably, a movable plate is installed on the top of the arc-shaped locking block, and the top of the movable plate is fixedly connected to the bottom of the adjusting block. A label pasting plate is arranged above the movable plate, and the side of the label pasting plate close to the adjusting block is fixedly connected to the adjusting block, and the label pasting plate is used for pasting fonts during equipment maintenance.

[0012] Preferably, a rotating shaft is installed on the left side of the rotating block, the left end of the rotating shaft passes through the fixed shell and extends into the interior thereof, a driving gear is installed on the left end of the rotating shaft, and a driven gear meshing with the driving gear is installed on the surface of the fixed shaft and at a position corresponding to the driving gear.

[0013] Preferably, the surfaces of the forward-rotating threaded rod and the reverse-rotating threaded rod are both threadedly connected with threaded blocks, the left side of the threaded block penetrates the fixed shell and extends to the outside thereof, and the left sides of the two threaded blocks are fixedly connected to the right sides of the first transparent shell and the second transparent shell respectively.

[0014] Preferably, a pressure block is installed at the bottom of the first transparent shell, a slot is opened at the top of the second transparent shell and corresponds to the position of the pressure block, a base is arranged inside the slot, and a pressure sensor used in conjunction with the pressure block is installed on the top of the base.

[0015] Preferably, fixing rods are installed on both the left and right sides of the bottom of the base, and a sliding groove is opened at the bottom of the inner wall of the slot and corresponding to the position of the fixing rod. The bottom end of the fixing rod passes through the slot and the sliding groove from top to bottom and extends to the inside of the sliding groove, and a buffer spring is sleeved on the surface of the fixing rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention rotates the rotating block so that the first transparent shell and the second transparent shell can cover the switch on the low-voltage circuit breaker, thereby preventing the switch on the low-voltage circuit breaker from being always exposed to the outside world, preventing it from being accidentally touched during use, and avoiding the phenomenon of erroneous operation. The electric push rod drives the arc locking block to move up and down, so that the arc locking block locks the limit groove on the rotating block through the limit block. When the low-voltage circuit breaker is disconnected and maintenance personnel repair the faulty circuit, the protection switch is prevented from being pushed up and closed by personnel who are unaware of the situation, thereby avoiding the phenomenon of electric shock to the maintenance personnel, improving safety, reducing safety hazards, and allowing only maintenance personnel to separate the arc locking block and the rotating block, thereby releasing the lock to operate the switch on the low-voltage circuit breaker.

[0017] 2. In the present invention, the pressure block and the pressure sensor are separated. When the pressure sensor cannot sense the pressure value, it means that the first transparent shell and the second transparent shell are separated. Then, the maintenance and care personnel of the low-voltage circuit breaker are immediately notified to prevent irrelevant personnel from opening and closing the low-voltage circuit breaker, thereby further improving the safety. By setting the fastening bolts, the mounting block can be removed from the low-voltage circuit breaker, and the low-voltage circuit breaker protective structure can be removed therefrom, so that it can be recycled, thereby improving the flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is an exploded view of the three-dimensional structure of the low-voltage circuit breaker body, the first transparent shell and the second transparent shell of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the connecting shell, rotating block, moving plate and label pasting plate of the present invention; Figure 4 This is an exploded view of the three-dimensional structure of the connecting shell and the rotating block of the present invention; Figure 5 This is an exploded view of the three-dimensional structure of the first transparent shell and the second transparent shell of the present invention; Figure 6 It is a structural cross-sectional view of the front view of the present invention; Figure 7 This is a structural cross-sectional view of the front view of the fixed shell, the connecting shell, the limiting groove, the slot and the buffer spring of the present invention; Figure 8 This is a structural cross-sectional view of the fixed shell, rotating block, annular groove, annular block and steel ball front view of the present invention.

[0019] In the figure: 1 low-voltage circuit breaker body, 2 fixed shell, 3 first transparent shell, 4 second transparent shell, 5 connecting shell, 6 electric push rod, 7 mounting block, 8 fastening bolt, 9 card block, 10 card slot, 11 support block, 12 fixed block, 13 forward threaded rod, 14 reverse threaded rod, 15 fixed shaft, 16 rotating block, 17 moving block, 18 adjusting block, 19 arc locking block, 20 limit block, 21 limit slot, 22 moving plate, 23 label pasting plate, 24 rotating shaft, 25 driving gear, 26 driven gear, 27 threaded block, 28 block, 29 positioning block, 30 pressing block, 31 slot, 32 base, 33 pressure sensor, 34 fixed rod, 35 slide slot, 36 buffer spring, 37 annular groove, 38 annular block, 39 steel ball. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-8 A low-voltage circuit breaker for a photovoltaic switch 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, 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 fixedly connected to the right side of the fixed shell 2, and a lockable electric push rod 6 is fixedly connected to the top of the inner wall of the connecting shell 5.

[0022] Furthermore, as shown in the figure, the low-voltage circuit breaker body 1 is in an open state at this time, and the maintenance personnel of the low-voltage circuit breaker inspect and repair the faulty circuit.

[0023] It also includes mounting blocks 7, the number of which is two and which are respectively arranged on the right side of the top and bottom of the low-voltage circuit breaker body 1, the 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, and the mounting block 7 is provided with a fastening bolt 8 threadedly connected to the low-voltage circuit breaker body 1, and the two mounting blocks 7 are fixedly connected to the supporting blocks 11 on the sides away from each other, and the front of the supporting block 11 is fixedly connected to the fixing block 12, and the fixing block 12 is fixedly connected to the fixing shell 2 on the side close to the fixing shell 2.

[0024] Furthermore, a clamping block 9 is fixedly connected to the left side of the mounting block 7, and a clamping slot 10 is provided on the right side of the low-voltage circuit breaker body 1 and at a position corresponding to the clamping block 9. The side of the clamping block 9 close to the clamping slot 10 penetrates the clamping slot 10 and extends into the interior thereof. By providing the clamping block 9 and the clamping slot 10, the stability of the mounting block 7 and the low-voltage circuit breaker body 1 when connected is improved.

[0025] Further, loosen the fastening bolt 8, and then pull the mounting block 7 to the right to separate the clamping block 9 and the clamping slot 10, separate the mounting block 7 and the low-voltage circuit breaker body 1, and separate the two transparent shells and the low-voltage circuit breaker body 1, and the disassembly is completed.

[0026] A forward-rotating threaded rod 13 is rotatably connected to the groove at the top of the inner wall of the fixed 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 fixed shell 2 through a bearing. The bottom end of the forward-rotating threaded rod 13 and the top end of the reverse-rotating threaded rod 14 are fixedly connected by a fixed shaft 15.

[0027] It also includes a rotating block 16, which is arranged on the right side of the fixed shell 2, and the left side of the rotating block 16 is in rotational contact with the right side of the fixed shell 2. The bottom end of the electric push rod 6 is fixedly connected to a moving block 17, and the front and rear sides of the bottom of the moving block 17 are fixedly connected to an adjusting block 18. The bottom of the adjusting 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, and the bottom of the arc-shaped locking block 19 contacts the top of the rotating block 16. The bottom of the arc-shaped locking block 19 is fixedly connected to a limiting block 20, and a limiting groove 2 is provided on the top of the rotating block 16 and corresponds to the position of the limiting block 20. 1, the bottom of the limit block 20 passes through the limit groove 21 and extends to the inside thereof to contact with the inner wall of the limit groove 21, the top of the arc-shaped locking block 19 is fixedly connected with a moving plate 22, the top of the moving plate 22 is fixedly connected with the bottom of the adjusting block 18, a label pasting plate 23 is arranged above the moving plate 22, the side of the label pasting plate 23 close to the adjusting block 18 is fixedly connected with the adjusting block 18, the label pasting plate 23 is used to paste the font of the equipment maintenance, when the label pasting plate 23 is located outside the connecting shell 5, other people outside can intuitively see that the words of the equipment maintenance are pasted on the label pasting plate 23.

[0028] Furthermore, when the circuit has no faults and does not need to be repaired, the label pasting plate 23 , the arc-shaped locking block 19 and the limit block 20 are located inside the connecting shell 5 .

[0029] Furthermore, a signal receiver and a signal transmitter are fixedly connected to the left and right sides of the top of the inner wall of the connecting shell 5, respectively; a central processing unit is fixedly connected to the top of the left side of the inner wall of the connecting shell 5, and a battery is fixedly connected to the top of the right side of the inner wall of the connecting shell 5. The battery supplies power to the electrical appliance, and the electric push rod 6, the signal receiver and the signal transmitter are electrically connected to the central processing unit respectively. The low-voltage circuit breaker maintenance and care personnel are electrically connected to the signal receiver through a mobile phone APP, the signal transmitter and the maintenance and care personnel are electrically connected through a mobile phone APP, and the control circuit can be implemented by simple programming by technicians in this field. This is common knowledge in the field and will not be elaborated on here.

[0030] A rotating shaft 24 is fixedly connected to the left side of the rotating block 16, and the left end of the rotating shaft 24 passes through the fixed shell 2 and extends to the inside thereof, and a driving gear 25 is fixedly connected to the left end of the rotating shaft 24, and a driven gear 26 meshing with the driving gear 25 is fixedly connected to the surface of the fixed shaft 15 and the position corresponding to the driving gear 25, and the surfaces of the forward threaded rod 13 and the reverse threaded rod 14 are both threadedly connected with threaded blocks 27, and the left side of the threaded block 27 passes through the fixed shell 2 and extends to the outside thereof, and 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, and the bottom of the first transparent shell 3 and the top of the second transparent shell 4 are in contact with each other, and the right side of the first transparent shell 3 and the right side of the second transparent shell 4 are in sliding contact with the fixed shell 2 respectively, and the left side of the first transparent shell 3 and the left side of the second transparent shell 4 are in sliding contact with the low-voltage circuit breaker body 1 respectively.

[0031] Furthermore, a stopper 28 is provided at 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 contacts the top of the inner wall of the first transparent shell 3, and the stopper 28 at the bottom contacts the bottom of the inner wall of the second transparent shell 4. A positioning block 29 is fixedly connected to the sides of the two stops 28 that are away from each other, and a side of the positioning block 29 close to the support block 11 is fixedly connected to the support block 11. By providing the stopper 28 and the positioning block 29, the stability of the first transparent shell 3 and the second transparent shell 4 when they move up and down is improved.

[0032] By rotating the rotating block 16, the first transparent shell 3 and the second transparent shell 4 can cover the switch on the low-voltage circuit breaker, so as to avoid the switch on the low-voltage circuit breaker being always exposed to the outside world, avoiding being accidentally touched during use, and avoiding the phenomenon of erroneous operation. The arc locking block 19 is driven up and down by the electric push rod 6, so that the arc locking block 19 locks the limit groove 21 on the rotating block 16 through the limit block 20. When the low-voltage circuit breaker is disconnected and the maintenance personnel repair the faulty circuit, the protection switch is prevented from being pushed up and closed by the personnel who are unaware of the situation, and the phenomenon of electric shock to the maintenance personnel is avoided, thereby improving safety and reducing potential safety hazards. In addition, only the maintenance personnel can separate the arc locking block 19 and the rotating block 16, thereby releasing the lock and operating the switch on the low-voltage circuit breaker.

[0033] A pressure block 30 is fixedly connected to the bottom of the first transparent shell 3, and a slot 31 is provided at the top of the second transparent shell 4 and at a position corresponding to the pressure block 30. A base 32 is provided inside the slot 31, and the surface of the base 32 is in sliding contact with the inner wall of the slot 31. A pressure sensor 33 used in conjunction with the pressure block 30 is fixedly connected to the top of the base 32, and the bottom of the pressure block 30 and the top of the pressure sensor 33 are in contact with each other. Fixed rods 34 are fixedly connected to the left and right sides of the bottom of the base 32, and 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 from top to bottom in sequence and extends to the inside of the slide groove 35. A buffer spring 36 is sleeved on the surface of the fixed rod 34. By providing the buffer spring 36, the rigid collision generated by the downward movement of the pressure block 30 and the pressure sensor 33 is reduced. The elastic force of the buffer spring 36 makes the pressure sensor 33 have a certain buffer force.

[0034] 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, and the pressure sensor 33 cannot sense the pressure value. The pressure sensor 33 transmits the signal to the central processor, and the central processor transmits the signal to the mobile phone APP of the low-voltage circuit breaker maintenance and care personnel through the signal transmitter, so as to conveniently notify the low-voltage circuit breaker maintenance and care personnel that the first transparent shell 3 and the second transparent shell 4 are opened.

[0035] Furthermore, an annular groove 37 is provided inside the fixed shell 2 and on the surface of the rotating shaft 24. An annular block 38 is fixedly connected to the surface of the rotating shaft 24 and at a position corresponding to the annular groove 37. Steel balls 39 are rotatably connected to the surface of the annular block 38 and the grooves on 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 providing the annular groove 37 and the annular block 38, the stability of the rotating shaft 24 during rotational motion is improved. By providing the steel ball 39, the friction generated when the annular block 38 contacts the inner wall of the annular groove 37 is reduced.

[0036] By separating the pressing block 30 and the pressure sensor 33, when the pressure sensor 33 cannot sense the pressure value, it means that the first transparent shell 3 and the second transparent shell 4 are separated, and the low-voltage circuit breaker maintenance and care personnel are immediately notified to prevent unrelated personnel from opening and closing the low-voltage circuit breaker, thereby further improving the safety. By setting the fastening bolts 8, the mounting block 7 can be removed from the low-voltage circuit breaker, and the low-voltage circuit breaker protective structure can be removed therefrom, so that it can be recycled, thereby improving the flexibility during use.

[0037] When in use, the maintenance personnel of the low-voltage circuit breaker inspects the faulty circuit. When the maintenance personnel of the low-voltage circuit breaker completes the circuit maintenance, the control signal is transmitted to the central processor through the signal receiver via the mobile phone APP. The central processor starts the electric push rod 6, and the electric push rod 6 drives the adjustment block 18 and the label pasting plate 23 to move upward through the moving block 17. The adjustment block 18 drives the arc locking block 19 to move upward through the moving plate 22. The arc locking block 19 drives the limit block 20 to move upward, so that the limit block 20 and the limit groove 21 are separated, so that the arc locking block 19 drives the limit block 20 to move upward to the inside of the connecting shell 5, and the lock of the rotating block 16 can be released; The rotating block 16 is rotated, and 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 threaded rod 13 and the reverse threaded rod 14 to rotate through the fixed shaft 15, so that the two threaded blocks 27 move away from each other, and the two threaded blocks 27 respectively drive the first transparent shell 3 to move upward and the second transparent shell 4 to move downward; The first transparent shell 3 drives the pressing block 30 to move upward and separate from the pressure sensor 33, so that the pressing block 30 and the slot 31 are separated. At this time, the switch on the low-voltage circuit breaker body 1 can be exposed to the outside world, and the maintenance personnel of the low-voltage circuit breaker can close the switch. After the closing is completed, the rotating block 16 is reversed to make the first transparent shell 3 move downward and the second transparent shell 4 move upward, so that the two transparent shells cover the switch on the low-voltage circuit breaker body 1 again; When the maintenance personnel of the low-voltage circuit breaker find that the circuit has a fault and needs to be repaired, the low-voltage circuit breaker body 1 trips. The electric push rod 6 is started through the mobile phone APP control. The electric push rod 6 drives the adjustment block 18 and the label pasting plate 23 to move downward, and the arc-shaped locking block 19 drives the limit block 20 to move downward, so that the limit block 20 is inserted into the limit groove 21, and the rotating block 16 can be locked.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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), two movable first transparent shells (3) and second transparent shells (4) being arranged on the left side of the fixed shell (2), a connecting shell (5) being installed on the right side of the fixed shell (2), and a lockable electric push rod (6) being installed on the top of the inner wall of the connecting shell (5).

2. A low voltage circuit breaker for a photovoltaic switch according to claim 1, characterized in that: It also includes mounting blocks (7), the number of which is two and which 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 fastening bolts (8) threadedly connected to the low-voltage circuit breaker body (1).

3. A low voltage circuit breaker for a photovoltaic switch according to claim 2, characterized in that: A support block (11) is installed on the side of the two mounting blocks (7) that is away from each other, a fixing block (12) is installed on the front side of the supporting block (11), and the fixing block (12) is fixedly connected to the fixing shell (2) on the side close to the fixing shell (2).

4. A low voltage circuit breaker for a photovoltaic switch according to claim 3, characterized in that: A forward-rotating threaded rod (13) is rotatably connected to the groove at the top of the inner wall of the fixed shell (2) via a bearing, and a reverse-rotating threaded rod (14) is rotatably connected to the groove at the bottom of the inner wall of the fixed 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 fixed shaft (15).

5. A low voltage circuit breaker for a photovoltaic switch according to claim 4, 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).

6. A low voltage circuit breaker for a photovoltaic switch according to claim 5, 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.

7. A low voltage circuit breaker for a photovoltaic switch according to claim 6, 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).

8. A low voltage circuit breaker for a photovoltaic switch according to claim 7, 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).

9. A low voltage circuit breaker for a photovoltaic switch according to claim 8, 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).

10. A low voltage circuit breaker for a photovoltaic switch according to claim 9, 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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