A low voltage distribution cabinet

Abstract

The invention discloses a low-voltage power distribution cabinet, which relates to the technical field of electric power and electrical equipment, and comprises a cabinet and a power distribution shell. The interior of the cabinet is provided with an installation device, a withdrawal device and a heat dissipation device. When the interior of the power distribution shell needs to be inspected, the power distribution shell cannot be taken out by directly moving it, and it must be taken out after the circuit breaker cuts off the internal power supply through a handle, an arc rod and a switch, so as to prevent electric shock accidents caused by misoperation or unexpected situations. The power distribution shell can be taken out through a latch, a trigger rod, a trigger block, a slide plate, a locking plate and a limit plate. By quickly withdrawing and sliding the power distribution shell, each drawer unit can be used as an independent functional module, which is convenient for installation, maintenance and replacement. This design also makes system expansion easier, and the growing power demand can be met by simply adding drawer units.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power and electrical equipment, and in particular to a low-voltage power distribution cabinet. Background Art

[0002] Low voltage distribution cabinet is a kind of equipment used in power system, mainly used to distribute and control low voltage power supply. It distributes the voltage through the transformer to each power unit to ensure the normal operation of the power system. Low voltage distribution cabinet is widely used in buildings, factories, public facilities and other places, with protection, monitoring and control functions to ensure the safe and stable operation of the power system.

[0003] The patent with the patent announcement number CN217159092U relates to the technical field of power and electrical equipment. The patent discloses a drawer-type power distribution cabinet, including a cabinet and several drawers. An opening is vertically opened on one side of the cabinet, and the drawers are arranged vertically in the opening, and the drawers are slidably connected to the cabinet. Slide rails are arranged on both sides of the cabinet corresponding to the drawers. First rollers are arranged on both sides of the drawers, and the first rollers are arranged on the side of the drawer away from the opening. The first roller is rotatably connected to the drawer through a rotating shaft, and the first roller rolls along the slide rail. A take-up wheel is arranged on the side of the first roller away from the drawer, and the take-up wheel is fixedly connected to the first roller. A pulling rope is wound around the surface of the take-up wheel, and the pulling rope is wound counterclockwise along the axis of the take-up wheel. The other end of the pulling rope is fixedly connected to the side of the cabinet away from the drawer, and the length of the pulling rope is less than the width of the cabinet. The patent provides a drawer-type power distribution cabinet, which can pull the drawer in the cabinet to prevent the drawer from sliding out of the cabinet, so as to facilitate the maintenance personnel to pull out the drawer and repair the electrical components in the drawer.

[0004] In the above patent, it is convenient for maintenance personnel to pull out the drawer and then inspect the electrical components inside the drawer. However, the current measuring equipment has the following problems: failure to perform a circuit-breaking operation may cause electric shock to the operator, because when the drawer unit is taken out in a live state, its internal circuit is still connected, which increases the risk of the operator contacting the live parts. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a low-voltage power distribution cabinet, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a low-voltage power distribution cabinet, comprising a cabinet and a power distribution shell, the power distribution shell is slidably mounted on the inner wall of the cabinet, the inner wall of the cabinet is provided with a slide rail, the inner wall of the cabinet is provided with a heat dissipation groove, the rear side of the power distribution shell is provided with a heat dissipation hole, and the interior of the cabinet is provided with a mounting device, a withdrawal device and a heat dissipation device; wherein the mounting device comprises a handle, a latch, a circuit breaker, an arc rod, a switch, a limit plate, a trigger rod, a fixing frame, a slider, a T-bar, a No. 1 spring, a trigger block, a slide plate, a positioning plate and a mounting plate, the handle is rotatably mounted on the inner wall of the power distribution shell, one side of the latch is slidably mounted on the inner wall of the cabinet, and the other side of the latch is fixedly mounted on the circumferential surface of the handle, the circuit breaker is arranged on the inner wall of the power distribution shell, the arc rod is slidably mounted on the inner wall of the power distribution shell, the switch The switch is arranged on the inner wall of the distribution shell, the limit plate is fixedly installed on the bottom of the distribution shell, the trigger rod is fixedly installed on the rear side of the distribution shell, the fixed frame is fixedly installed on the inner wall of the cabinet, the slider is slidably installed on the inner wall of the fixed frame, one side of the T-shaped rod is fixedly installed on the front side of the slider, and the other side of the T-shaped rod slides through the inner and outer walls of the fixed frame, the No. 1 spring is arranged between the fixed frame and the slider, and the slider is reset by the arranged No. 1 spring, the trigger block is slidably installed on the inner wall of the fixed frame, the slide plate is fixedly installed on the bottom of the slider, one side of the clamping plate is rotatably installed on the inner wall of the fixed frame, and the other side of the clamping plate is slidably installed on the inner wall of the slide plate, and the mounting plate is fixedly installed on the left side of the distribution shell, and each drawer unit can be used as an independent functional module by quickly pulling out and sliding in the distribution shell.

[0007] According to the above technical solution, the contact surface between the handle and the arc rod is set as an eccentric circle, and the circuit breaker is electrically connected to the switch. By turning the handle upward, the arc rod moves upward, and the movement of the arc rod contacts the switch to open the circuit breaker. At this time, the power supply in the distribution shell is cut off.

[0008] According to the above technical solution, a card slot is provided on the top of the slider, a docking slot is provided on the left side of the mounting plate, a side of the trigger block close to the trigger rod is set as an inclined surface, and a side of the trigger block close to the slider is set as an inclined surface. The movement of the slider will compress the No. 1 spring and contact the inclined surface of the trigger block at the same time. At this time, the position of the slider is fixed, and a No. 2 spring is provided between the trigger block and the fixed frame, and the trigger block is reset by the provided No. 2 spring.

[0009] According to the above technical solution, the extraction device includes a hollow block, an insert block rod and a No. 3 spring. The hollow block is fixedly passed through the inner and outer walls of the cabinet, the insert block rod is slidably installed on the inner wall of the hollow block, and the No. 3 spring is arranged between the hollow block and the insert block rod. The insert block rod is driven to reset by the arranged No. 3 spring. The side of the insert block rod close to the mounting plate is arranged as an inclined surface. When the distribution shell is taken out, the mounting plate will contact the inclined surface of the insert block rod, causing the insert block rod to move to the left and compress the No. 3 spring at the same time. When the docking groove and the insert block rod are on the same horizontal line, the No. 3 spring is released and drives the insert block rod to be inserted into the docking groove, thereby completing the temporary fixation of the distribution shell.

[0010] According to the above technical solution, the extraction device also includes a hollow cylinder and a brake rod. The hollow cylinder is fixedly installed on the left side of the hollow block, and the brake rod is fixedly installed on the left side of the plug-in block rod. When the distribution shell needs to be completely removed, the clamping rod is moved out of the restriction range of the slide button. At this time, the slide button is moved to the left to contact the brake rod, so that the brake rod moves to the left. The movement of the brake rod drives the plug-in block rod to move, so that the plug-in block rod is freed from the restriction of the mounting plate, that is, the distribution shell can be completely removed at this time.

[0011] According to the above technical solution, the pulling-out device also includes a sliding button and a clamping rod. The sliding button is slidably installed on the circumferential surface of the hollow cylinder, and the clamping rod is rotatably installed on the surface of the hollow block, so that each drawer unit can be used as an independent functional module, which is convenient for installation, maintenance and replacement. A No. 4 spring is arranged between the sliding button and the hollow cylinder, and the sliding button is driven to reset by the arranged No. 4 spring.

[0012] According to the above technical solution, a square groove is provided on the surface of the sliding button close to the clamping rod, the clamping rod is in contact with the square groove, and a No. 1 torsion spring is arranged between the clamping rod and the hollow block. When the distribution shell needs to be completely removed, the clamping rod is moved out of the restriction range of the sliding button, and the clamping rod is reset by the No. 1 torsion spring.

[0013] According to the above technical solution, the pull-out device also includes a support plate, a stop block and a pull-out plate. The support plate is slidably installed on the inner wall of the cabinet, the stop block is fixedly installed on the rear side of the support plate, and the pull-out plate is rotatably installed on the inner wall of the support plate. A No. 1 torsion spring is arranged between the pull-out plate and the support plate. The pull-out plate is reset by the arranged No. 1 torsion spring, the movement of the pull-out plate drives the support plate to move, and the movement of the support plate drives the stop block to move. The stop block enables the support plate to have a maximum support distance, and the distribution shell is supported by the support plate.

[0014] According to the above technical solution, the heat dissipation device includes a hollow frame, a fan, a temperature sensor and a conveying pipe. The hollow frame is fixedly installed on the top of the cabinet, the fan is arranged on the inner wall of the hollow frame, the temperature sensor is arranged on the inner wall of the hollow frame, the temperature sensor is electrically connected to the fan, and the conveying pipe is fixedly installed on the outer wall of the fan. The fan is used to dissipate heat for each distribution shell. When the fan is working, wind will be transported to the heat dissipation holes of each distribution shell through the conveying pipe.

[0015] According to the above technical solution, the heat dissipation device also includes an L-shaped rod, a heat dissipation net and a brush. The L-shaped rod is fixedly installed on the rear side of the end block, the heat dissipation net is arranged on the inner wall of the heat dissipation groove, and the brush is fixedly installed on the surface of the L-shaped rod close to the heat dissipation net. The movement of the end block drives the L-shaped rod to move, and the movement of the L-shaped rod drives the brush to move, so that the dust on the heat dissipation net is brushed off by the brush.

[0016] The present invention provides a low-voltage power distribution cabinet. It has the following beneficial effects: (1) The invention, through the setting of the installation device, loads the electrical equipment inside the distribution shell and then installs it along the slide rail. The position of the distribution shell is fixed by the T-shaped rod, the limit plate, the slider, the No. 1 spring, the trigger block, the slide plate, and the locking plate. When it is necessary to inspect the inside of the distribution shell, the distribution shell cannot be removed by directly moving it. The circuit breaker is opened by the handle, the arc rod, and the switch. At this time, the power supply in the distribution shell is isolated. When it is necessary to remove the distribution shell for inspection, maintenance or replacement of electrical equipment, the circuit breaker can be used to isolate the circuit to ensure safe operation and prevent electric shock accidents caused by misoperation or unexpected situations. The distribution shell can be removed by the latch, the trigger rod, the trigger block, the slide plate, the locking plate, and the limit plate. By quickly pulling out and sliding in the distribution shell, each drawer unit can be used as an independent functional module, which is convenient for installation, maintenance and replacement. This design also makes system expansion easier. Only by adding drawer units can the growing power demand be met.

[0017] (2) The invention, through the setting of the extraction device, temporarily fixes the distribution shell through the installation plate, the plug-in rod and the No. 3 spring when taking out the distribution shell, so that the distribution shell has a maximum distance for taking out. The limit can ensure that the distribution shell stays in a safe position when taking out, prevents the distribution shell from accidentally falling off, and improves the safety of the operator. The distribution shell is supported by the extraction plate, the support plate and the end block to prevent it from falling off due to the gravity of the tilt after the distribution shell is taken out. When the distribution shell needs to be completely taken out, the distribution shell can be completely taken out through the clamping rod, the sliding button, the brake rod and the plug-in rod. The sliding button is prevented from being touched accidentally by the clamping rod. The distribution shell can also be taken out completely by temporarily fixing it, so that the structure of the distribution cabinet is highly versatile and flexible in assembly.

[0018] (3) This invention, through the setting of the heat dissipation device, dissipates heat to each distribution shell through the fan when the distribution cabinet is working. When the fan is working, the wind will be transported to the heat dissipation holes of each distribution shell through the conveying pipe. The traditional heat dissipation method may only dissipate heat to the entire distribution cabinet, while this separate heat dissipation method can avoid heat accumulation in the distribution shell, which helps to improve the heat dissipation efficiency of the entire distribution cabinet and ensure the normal working temperature of the equipment inside the distribution cabinet, thereby extending the service life of the equipment and improving work efficiency. The fan speed is controlled by the temperature sensor. After long-term use, dust may accumulate on the surface of the heat dissipation net. The dust on the heat dissipation net is brushed off by L-shaped rods and brushes. The dust may contain conductive particles, which may form a conductive path in the distribution cabinet, causing short circuits or other electrical faults. Regular dust cleaning can reduce this risk and improve the safety and reliability of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fan and conveying pipe position structure of the present invention; Figure 3 This is a schematic diagram of the position structure of the release plate and the distribution shell of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A; Figure 5 It is a schematic diagram of the position structure of the limit plate and the trigger rod of the present invention; Figure 6 It is a schematic diagram of a partial cross-sectional structure of the installation device of the present invention; Figure 7 This is a schematic diagram of the position structure of the L-shaped rod and the heat dissipation net of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the structure of part B in the middle is enlarged; Fig. 9 This is a schematic diagram of the position structure of the plug rod and the mounting plate of the present invention; Fig.10 This is a schematic diagram of the position structure of the transmission pipe and the distribution shell of the present invention.

[0020] In the figure: 1. cabinet; 2. distribution shell; 3. handle; 4. latch; 5. circuit breaker; 6. arc rod; 7. switch; 8. limit plate; 9. trigger rod; 10. fixed frame; 11. slider; 12. T-shaped rod; 13. No. 1 spring; 14. trigger block; 15. slide plate; 16. clamping plate; 17. mounting plate; 20. hollow block; 21. plug-in block rod; 22. No. 3 spring; 24. hollow cylinder; 25. brake rod; 26. slide button; 27. clamping rod; 28. support plate; 29. ​​end block; 210. escape plate; 30. hollow frame; 31. fan; 32. temperature sensor; 33. conveying pipe; 34. L-shaped rod; 35. heat dissipation net; 36. brush. DETAILED DESCRIPTION

[0021] 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 the embodiments. 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.

[0022] See also Figure 1-Figure 6One embodiment of the present invention is: a low-voltage power distribution cabinet, comprising a cabinet 1 and a power distribution shell 2, the power distribution shell 2 is slidably mounted on the inner wall of the cabinet 1, the inner wall of the cabinet 1 is provided with a slide rail, the inner wall of the cabinet 1 is provided with a heat dissipation slot, the rear side of the power distribution shell 2 is provided with a heat dissipation hole, the interior of the cabinet 1 is provided with a mounting device, the mounting device comprises a handle 3, a latch 4, a circuit breaker 5, an arc rod 6, a switch 7, a limit plate 8, a trigger rod 9, a fixing frame 10, a slider 11, a T-shaped rod 12, a A spring 13, a trigger block 14, a slide plate 15, a positioning plate 16 and a mounting plate 17, the handle 3 is rotatably mounted on the inner wall of the distribution shell 2, one side of the latch 4 is slidably mounted on the inner wall of the cabinet 1, and the other side of the latch 4 is fixedly mounted on the circumferential surface of the handle 3, the circuit breaker 5 is arranged on the inner wall of the distribution shell 2, the arc rod 6 is slidably mounted on the inner wall of the distribution shell 2, the switch 7 is arranged on the inner wall of the distribution shell 2, the limit plate 8 is fixedly mounted on the bottom of the distribution shell 2, and the trigger rod 9 is fixedly mounted on the inner wall of the distribution shell 2 On the back side, the fixing frame 10 is fixedly installed on the inner wall of the cabinet 1, the sliding block 11 is slidably installed on the inner wall of the fixing frame 10, one side of the T-shaped rod 12 is fixedly installed on the front side of the sliding block 11, and the other side of the T-shaped rod 12 slides through the inner and outer walls of the fixing frame 10, a spring 13 is arranged between the fixing frame 10 and the sliding block 11, and the sliding block 11 is driven to reset by the arranged spring 13, the trigger block 14 is slidably installed on the inner wall of the fixing frame 10, the slide plate 15 is fixedly installed on the bottom of the sliding block 11, one side of the positioning plate 16 is rotatably installed on the inner wall of the fixing frame 10, and the other side of the positioning plate 16 is slidably installed on the inner wall of the slide plate 15, and the mounting plate 17 is fixedly installed on the left side of the distribution shell 2. By quickly pulling out and sliding in the distribution shell 2, each drawer unit can be used as an independent functional module, which is convenient for installation, maintenance and replacement. This design also makes system expansion easier, and the growing power demand can be met by simply adding drawer units.

[0023] The contact surface between the handle 3 and the arc rod 6 is set to an eccentric circle, so that the arc rod 6 moves upward and the circuit breaker 5 is electrically connected to the switch 7.

[0024] A card slot is provided on the top of the slider 11, a docking slot is provided on the left side of the mounting plate 17, a side of the trigger block 14 close to the trigger rod 9 is set as an inclined surface, and a side of the trigger block 14 close to the slider 11 is set as an inclined surface, so that the position of the slider 11 is fixed, and a No. 2 spring is provided between the trigger block 14 and the fixing frame 10, and the trigger block 14 is reset by the No. 2 spring.

[0025] When the present embodiment is working, the electrical equipment is loaded inside the power distribution shell 2 and then installed along the slide rail. The power distribution shell 2 moves and contacts with the T-shaped rod 12, causing the T-shaped rod 12 to move backward. The power distribution shell 2 moves while driving the limit plate 8 to move. The movement of the T-shaped rod 12 drives the slider 11 to move. The movement of the slider 11 compresses the No. 1 spring 13 and contacts with the inclined surface of the trigger block 14, causing the trigger block 14 to move upward and compress the No. 2 spring. When the card slot and the trigger block 14 are at the same level, the No. 2 spring is released and drives the trigger block 14 to move upward. The hair block 14 is inserted into the card slot, and the position of the slider 11 is fixed at this time. The movement of the slider 11 drives the slide plate 15 to move, and the movement of the slide plate 15 causes the card plate 16 to rotate upward. The card plate 16 rotates and contacts with the limit plate 8, thereby limiting the position of the limit plate 8. That is, the position of the distribution shell 2 is fixed. When it is necessary to inspect the inside of the distribution shell 2, the distribution shell 2 cannot be removed by directly moving. At this time, the handle 3 is turned upward to move the arc rod 6 upward, and the arc rod 6 moves to contact with the switch 7 to make the circuit breaker 5 is opened, and the power supply in the distribution shell 2 is isolated. When the distribution shell 2 needs to be removed for inspection, maintenance or replacement of electrical equipment, the circuit breaker 5 can be used to isolate the circuit to ensure safe operation and prevent electric shock accidents caused by misoperation or unexpected situations. When the handle 3 is rotated, the latch 4 is driven to be separated from the cabinet 1. At this time, the distribution shell 2 is pushed so that the trigger rod 9 contacts the inclined surface of the trigger block 14, so that the trigger block 14 moves upward. The upward movement of the trigger block 14 makes the slider 11 break away from the restriction and drives the slider 11 to reset when the No. 1 spring 13 is reset. At this time, the slide plate 15 moves so that the positioning plate 16 rotates downward. At this time, the positioning plate 16 is free from the restriction of the limit plate 8. At this time, the distribution shell 2 can be taken out. The distribution shell 2 moves and the installation plate 17 is driven to move. By quickly pulling out and sliding in the distribution shell 2, each drawer unit can be used as an independent functional module, which is convenient for installation, maintenance and replacement. This design also makes system expansion easier. Only the increase of drawer units is required to meet the growing power demand.

[0026] See also Figure 1-Figure 9 On the basis of the above embodiment, in another embodiment of the present invention, a pull-out device and a heat dissipation device are arranged inside the cabinet 1, and the pull-out device comprises a hollow block 20, an insert block rod 21 and a No. 3 spring 22. The hollow block 20 is fixedly passed through the inner and outer walls of the cabinet 1, and the insert block rod 21 is slidably installed on the inner wall of the hollow block 20. The No. 3 spring 22 is arranged between the hollow block 20 and the insert block rod 21, and the insert block rod 21 is driven to reset by the arranged No. 3 spring 22. The side of the insert block rod 21 close to the mounting plate 17 is arranged as an inclined surface, which temporarily fixes the distribution shell 2 so that there is a maximum distance for taking out the distribution shell 2. The limit can ensure that the distribution shell 2 stays in a safe position when being taken out, prevents the distribution shell 2 from accidentally falling off, and improves the safety of the operator.

[0027] The extraction device also includes a hollow cylinder 24 and a brake rod 25. The hollow cylinder 24 is fixedly installed on the left side of the hollow block 20, and the brake rod 25 is fixedly installed on the left side of the plug-in rod 21. By temporarily fixing the distribution shell 2, the entire shell can be taken out, making the distribution cabinet structure versatile and flexible to assemble.

[0028] The extraction device also includes a sliding button 26 and a clamping rod 27. The sliding button 26 is slidably installed on the circumferential surface of the hollow tube 24, and the clamping rod 27 is rotatably installed on the surface of the hollow 20. The clamping rod 27 is used to prevent the sliding button 26 from being accidentally touched. A No. 4 spring is arranged between the sliding button 26 and the hollow tube 24, and the sliding button 26 is reset by the arranged No. 4 spring.

[0029] A square groove is provided on the surface of the sliding button 26 close to the clamping rod 27 , and the clamping rod 27 contacts the square groove. A first torsion spring is provided between the clamping rod 27 and the hollow block 20 , and the clamping rod 27 is reset by the first torsion spring.

[0030] The extraction device also includes a support plate 28, an end block 29 and a pull-out plate 210. The support plate 28 is slidably mounted on the inner wall of the cabinet 1, the end block 29 is fixedly mounted on the rear side of the support plate 28, and the pull-out plate 210 is rotatably mounted on the inner wall of the support plate 28. A No. 2 torsion spring is arranged between the pull-out plate 210 and the support plate 28. The No. 1 torsion spring is arranged to drive the pull-out plate 210 to reset, so as to support the distribution shell 2 and prevent it from falling off due to the gravity of the tilting of the distribution shell 2 after it is taken out and suspended in the air.

[0031] The heat dissipation device includes a hollow frame 30, a fan 31, a temperature sensor 32 and a conveying pipe 33. The hollow frame 30 is fixedly installed on the top of the cabinet 1, the fan 31 is arranged on the inner wall of the hollow frame 30, the temperature sensor 32 is arranged on the inner wall of the hollow frame 30, the temperature sensor 32 is electrically connected to the fan 31, and the conveying pipe 33 is fixedly installed on the outer wall of the fan 31. The traditional heat dissipation method may only dissipate heat for the entire distribution cabinet, while this separate heat dissipation method can avoid heat accumulation in the distribution shell 2, which helps to improve the heat dissipation efficiency of the entire distribution cabinet and ensure the normal working temperature of the equipment inside the distribution cabinet, thereby extending the service life of the equipment and improving work efficiency. The speed of the fan 31 is controlled by the temperature sensor 32.

[0032] The heat dissipation device also includes an L-shaped rod 34, a heat dissipation net 35 and a brush 36. The L-shaped rod 34 is fixedly mounted on the rear side of the termination block 29, the heat dissipation net 35 is arranged on the inner wall of the heat dissipation slot, and the brush 36 is fixedly mounted on the surface of the L-shaped rod 34 close to the heat dissipation net 35. The dust on the heat dissipation net 35 is brushed away by the brush 36. The dust may contain conductive particles, which may form a conductive path in the power distribution cabinet, causing a short circuit or other electrical faults. Regular dust cleaning can reduce this risk and improve the safety and reliability of the circuit.

[0033] When the present embodiment is working, when the distribution shell 2 is taken out, the mounting plate 17 will contact the inclined surface of the block rod 21, causing the block rod 21 to move to the left while compressing the No. 3 spring 22. When the docking groove and the block rod 21 are at the same horizontal line, the No. 3 spring 22 is released and drives the block rod 21 to be inserted into the docking groove. At this time, the temporary fixation of the distribution shell 2 is completed, so that there is a maximum distance for the removal of the distribution shell 2. The limit can ensure that the distribution shell 2 stays in a safe position when it is taken out, prevents the distribution shell 2 from falling off accidentally, and improves the safety of the operator. When the distribution shell 2 moves, it will contact the ejection plate 210 and drive the ejection plate 210 to move. The movement of the ejection plate 210 drives the support plate 28 to move, and the movement of the support plate 28 drives the terminal The stop block 29 moves, and the support plate 28 has a maximum support distance through the stop block 29. The support plate 28 supports the distribution shell 2 to prevent the distribution shell 2 from falling off due to the gravity of the tilt after being taken out. When the distribution shell 2 needs to be completely taken out, the clamping rod 27 is moved out of the restriction range of the slide button 26. At this time, the slide button 26 is moved to the left to contact the brake rod 25, so that the brake rod 25 moves to the left. The movement of the brake rod 25 drives the insertion rod 21 to move, so that the insertion rod 21 is separated from the restriction of the mounting plate 17, that is, the distribution shell 2 can be completely taken out at this time, and the movement of the slide button 26 is prevented from being touched by mistake through the clamping rod 27. The distribution shell 2 can also be taken out as a whole by temporarily fixing the distribution shell 2, so that the structure of the distribution cabinet is highly versatile and flexible to assemble. When the distribution cabinet is working, each distribution shell 2 is cooled by the fan 31. When the fan 31 is working, the wind will be transported to the heat dissipation holes of each distribution shell 2 through the delivery pipe 33. The traditional heat dissipation method may only dissipate heat for the entire distribution cabinet, while this separate heat dissipation method can avoid heat accumulation in the distribution shell 2, which helps to improve the heat dissipation efficiency of the entire distribution cabinet and ensure the normal operating temperature of the equipment inside the distribution cabinet, thereby extending the service life of the equipment and improving work efficiency. The speed of the fan 31 is controlled by the temperature sensor 32. Under long-term use, dust may accumulate on the surface of the heat dissipation net 35. At this time, the movement of the end block 29 drives the L-shaped rod 34 to move, and the movement of the L-shaped rod 34 drives the brush 36 to move. The dust on the heat dissipation net 35 is brushed off by the brush 36. The dust may contain conductive particles, which may form a conductive path in the distribution cabinet, causing a short circuit or other electrical faults. Regular dust cleaning can reduce this risk and improve the safety and reliability of the circuit.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage power distribution cabinet, comprising a cabinet (1) and a power distribution shell (2), characterized in that: The power distribution shell (2) is slidably mounted on the inner wall of the cabinet (1); the inner wall of the cabinet (1) is provided with a slide rail; the inner wall of the cabinet (1) is provided with a heat dissipation groove; the rear side of the power distribution shell (2) is provided with a heat dissipation hole; and the interior of the cabinet (1) is provided with a mounting device, a drawer device and a heat dissipation device; The mounting device comprises a handle (3), a latch (4), a circuit breaker (5), an arc rod (6), a switch (7), a limit plate (8), a trigger rod (9), a fixing frame (10), a slider (11), a T-shaped rod (12), a No. 1 spring (13), a trigger block (14), a slide plate (15), a positioning plate (16) and a mounting plate (17); the handle (3) is rotatably mounted on the inner wall of the distribution shell (2); one side of the latch (4) is slidably mounted on the inner wall of the cabinet (1); the other side of the latch (4) is fixedly mounted on the circumferential surface of the handle (3); the circuit breaker (5) is arranged on the inner wall of the distribution shell (2); the arc rod (6) is slidably mounted on the inner wall of the distribution shell (2); the switch (7) is arranged on the inner wall of the distribution shell (2); the limit plate (8) is fixedly mounted on the bottom of the distribution shell (2); The trigger rod (9) is fixedly mounted on the rear side of the power distribution shell (2); the fixing frame (10) is fixedly mounted on the inner wall of the cabinet (1); the slider (11) is slidably mounted on the inner wall of the fixing frame (10); one side of the T-shaped rod (12) is fixedly mounted on the front side of the slider (11); the other side of the T-shaped rod (12) slides through the inner and outer walls of the fixing frame (10); the No. 1 spring (13) is arranged between the fixing frame (10) and the slider (11); the trigger block (14) is slidably mounted on the inner wall of the fixing frame (10); the slide plate (15) is fixedly mounted on the bottom of the slider (11); one side of the locking plate (16) is rotatably mounted on the inner wall of the fixing frame (10); the other side of the locking plate (16) is slidably mounted on the inner wall of the slide plate (15); and the mounting plate (17) is fixedly mounted on the left side of the power distribution shell (2).

2. A low voltage distribution cabinet according to claim 1, characterized in that: The contact surface between the handle (3) and the arc rod (6) is arranged as an eccentric circle, and the circuit breaker (5) is electrically connected to the switch (7).

3. A low voltage distribution cabinet according to claim 2, characterized in that: A slot is provided on the top of the slider (11), a docking slot is provided on the left side of the mounting plate (17), a side of the trigger block (14) close to the trigger rod (9) is provided as an inclined surface, a side of the trigger block (14) close to the slider (11) is provided as an inclined surface, and a No. 2 spring is provided between the trigger block (14) and the fixing frame (10).

4. A low voltage distribution cabinet according to claim 3, characterized in that: The extraction device comprises a hollow block (20), an insert block rod (21) and a No. 3 spring (22); the hollow block (20) is fixedly passed through the inner and outer walls of the cabinet (1); the insert block rod (21) is slidably mounted on the inner wall of the hollow block (20); the No. 3 spring (22) is arranged between the hollow block (20) and the insert block rod (21); and a side of the insert block rod (21) close to the mounting plate (17) is arranged as an inclined surface.

5. A low voltage distribution cabinet according to claim 4, characterized in that: The extraction device further comprises a hollow cylinder (24) and a brake rod (25), wherein the hollow cylinder (24) is fixedly mounted on the left side of the hollow block (20), and the brake rod (25) is fixedly mounted on the left side of the block insertion rod (21).

6. A low voltage distribution cabinet according to claim 5, characterized in that: The extraction device further comprises a sliding button (26) and a clamping rod (27), wherein the sliding button (26) is slidably mounted on the circumferential surface of the hollow cylinder (24), and the clamping rod (27) is rotatably mounted on the surface of the hollow block (20), and a No. 4 spring is arranged between the sliding button (26) and the hollow cylinder (24).

7. A low voltage distribution cabinet according to claim 6, characterized in that: A square groove is provided on the surface of the sliding button (26) on the side close to the clamping rod (27), the clamping rod (27) is in contact with the square groove, and a first torsion spring is provided between the clamping rod (27) and the hollow block (20).

8. A low voltage distribution cabinet according to claim 7, characterized in that: The extraction device further comprises a support plate (28), a stop block (29) and an ejection plate (210); the support plate (28) is slidably mounted on the inner wall of the cabinet (1); the stop block (29) is fixedly mounted on the rear side of the support plate (28); the ejection plate (210) is rotatably mounted on the inner wall of the support plate (28); and a No. 2 torsion spring is provided between the ejection plate (210) and the support plate (28).

9. A low voltage distribution cabinet according to claim 8, characterized in that: The heat dissipation device comprises a hollow frame (30), a fan (31), a temperature sensor (32) and a delivery pipe (33); the hollow frame (30) is fixedly mounted on the top of the cabinet (1); the fan (31) is arranged on the inner wall of the hollow frame (30); the temperature sensor (32) is arranged on the inner wall of the hollow frame (30); the temperature sensor (32) is electrically connected to the fan (31); and the delivery pipe (33) is fixedly mounted on the outer wall of the fan (31).

10. A low voltage distribution cabinet according to claim 9, characterized in that: The heat dissipation device further comprises an L-shaped rod (34), a heat dissipation net (35) and a brush (36); the L-shaped rod (34) is fixedly mounted on the rear side of the termination block (29); the heat dissipation net (35) is arranged on the inner wall of the heat dissipation groove; and the brush (36) is fixedly mounted on the surface of the L-shaped rod (34) on a side close to the heat dissipation net (35).

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