Distribution box with good heat dissipation performance

Abstract

The utility model discloses a distribution box with good heat dissipation performance, which relates to the technical field of distribution boxes, and comprises a distribution box main body, a box door, a dustproof net and a dust collection box. According to the power distribution box, the power distribution box body is provided with the limiting assembly, so that an operator can conveniently inspect or maintain electrical equipment in the power distribution box body, limiting of the limiting assembly on the box door can be relieved by pressing the push plate, so that the operator can conveniently close the box door, and the sealing cover assembly can seal the top of the dust collection box through a cover plate when the dust collection box is not used; according to the dust collection box, dust in the external environment is prevented from entering the dust collection box, the frequency of taking out the dust collection box for cleaning is reduced, when the box door is opened, the box door rotates to drive the cover plate to be opened, the dust collection box can conveniently collect the cleaned dust, and the dust collection box and the sealing cover assembly can be conveniently taken out through the through groove.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution boxes, in particular to a distribution box with good heat dissipation performance. Background Art

[0002] The distribution box is a low-voltage distribution device that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-enclosed metal cabinet or on a screen according to the requirements of electrical wiring. The distribution box has the characteristics of small size, easy installation, special technical performance, fixed position, unique configuration function, no site restrictions, relatively common application, stable and reliable operation, high space utilization, small footprint and environmental protection. The heat generated inside the distribution box when it is working needs to be dissipated in time to avoid affecting the normal operation of electrical equipment due to the increase in temperature inside the box. The existing technology generally opens an opening on the distribution box body to cooperate with a fan for heat dissipation. A dust net is usually installed at the opening. The dust net needs to be cleaned regularly to avoid clogging of the opening due to large accumulation of dust, which affects the heat dissipation efficiency.

[0003] For example, the heat dissipation distribution box disclosed in the utility model with authorization announcement number CN215732957U has a dust cleaning brush installed on the dustproof net at the heat dissipation port on both sides of the distribution box body. The dust cleaning brush is connected to the box door by a pull rope. The box door can be opened and the dust cleaning brush can be moved by pulling the pull rope for cleaning, thereby eliminating the need for manual timed cleaning. A dust collecting box is installed on the lower side of the dustproof net, which can collect the dust swept, and the dust collecting box can be taken out regularly to dispose of the dust.

[0004] This prior art also has the following problems when used:

[0005] When the device opens the box door, the reset spring is squeezed and contracted. When the operator releases the box door, the reset spring drives the box door to close. Therefore, when inspecting or repairing the electrical equipment inside the distribution box body, the operator needs to hold the box door to maintain the position of the box door, which affects the operator's work efficiency. The working environment of the distribution box body of the device is usually located outdoors, and dust from the external environment can easily enter the dust box, resulting in an increased frequency of taking out the dust box for cleaning. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a distribution box with good heat dissipation performance to solve the technical problems mentioned in the above background.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a distribution box with good heat dissipation performance, comprising a distribution box body, a box door, a dustproof net and a dust collecting box, wherein the front of the distribution box body is hinged with symmetrical box doors, the left and right sides of the distribution box body are respectively installed with dustproof nets, and a dust collecting box is arranged under the dustproof net;

[0008] The limit assembly is arranged on the left and right sides of the main body of the distribution box. The limit assembly can limit the position of the box door after the box door is opened and released;

[0009] A cover assembly is arranged below the dust screen and can cover the top of the ash box when the ash box is not in use;

[0010] The through slot is arranged outside the ash collecting box, and the through slot can facilitate taking out the ash collecting box and the sealing cover assembly.

[0011] As an optimal technical solution of the present utility model, heat dissipation ports are respectively provided on the left and right sides of the distribution box body, the dustproof net is installed inside the heat dissipation ports, a pull rope is fixedly provided on the back of the box door, the pull rope passes through the distribution box body, and a lifting slide bar is fixedly provided on the other end of the pull rope, and a symmetrical first U-shaped fixing frame is fixedly provided on the left and right sides of the distribution box body, a fixing rod is fixedly provided between the inner top and bottom surfaces of the first U-shaped fixing frame, a first spring is fixedly provided on the inner top surface of the first U-shaped fixing frame, and the other end of the first spring is fixedly connected to the top surface of the lifting slide bar, a brush is installed on the bottom surface of the lifting slide bar and a side close to the distribution box body, the fixing rod passes through the lifting slide bar and is connected to the lifting slide bar by sliding, and a symmetrical second U-shaped fixing frame is fixedly provided on the left and right sides of the distribution box body, the outer side of the ash collecting box passes through the second U-shaped fixing frame and is connected to the second U-shaped fixing frame by sliding, the through groove is provided on the inner side of the second U-shaped fixing frame, and the through groove passes through the front to the back of the second U-shaped fixing frame.

[0012] As a preferred technical solution of the utility model, the limiting assembly includes an inclined plate, a second spring, a first fixed block, a T-shaped slide groove, an L-shaped plate, a first connecting rod, a lifting block, a second connecting rod, a movable block, a guide sleeve, a push rod and a push plate. The first fixed block is symmetrically fixed to the left and right sides of the distribution box body, the second spring is fixedly arranged on the back of the first fixed block, the inclined plate is fixedly arranged at the other end of the second spring, the T-shaped slide groove is symmetrically arranged on the left and right sides of the distribution box body, the L-shaped plate is fixedly arranged on the front of the inclined plate, the first connecting rod is hinged to the top surface of the L-shaped plate, the lifting block is hinged to the other end of the first connecting rod, the second connecting rod is hinged to the top surface of the lifting block, the movable block is hinged to the other end of the second connecting rod, the push rod is fixedly arranged on the front of the movable block, the push plate is fixedly arranged on the front of the push rod, and the guide sleeve is fixedly arranged on the left and right sides of the distribution box body.

[0013] As a preferred technical solution of the utility model, a T-shaped slider adapted to the T-shaped slide groove is fixedly provided on one side of the inclined plate close to the distribution box body. The T-shaped slider is slidably connected to the distribution box body through the T-shaped slide groove, and the push rod passes through the guide sleeve and is slidably connected to the guide sleeve.

[0014] As a preferred technical solution of the utility model, the sealing cover assembly includes a rubber rope, a cover plate, a second fixed block, a torsion spring, a rotating rod and a bolt. The cover plate is hinged to the top surface of the ash collecting box, the rotating rod is fixedly arranged on the bottom surface of the cover plate, the rubber rope is fixedly arranged at the bottom of the side of the rotating rod, the bolt is fixedly arranged at the other end of the rubber rope, the second fixed block is fixedly arranged on the outside of the ash collecting box, and one end of the torsion spring is fixedly arranged on the top surface of the second fixed block.

[0015] As a preferred technical solution of the utility model, the top surface of the cover plate is provided with a vertical groove extending through to the bottom surface, the rubber rope passes through the cover plate through the vertical groove, the end of the torsion spring away from the second fixed block is fixedly connected to the top surface of the cover plate, and the bottom surface of the lifting slide is provided with a threaded hole for adapting bolts, and the bolts are threadedly connected to the lifting slide through the threaded holes.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] The utility model provides a limit assembly, which can limit the position of the box door after the box door is opened and released, so as to facilitate the operator to check or repair the electrical equipment inside the distribution box body; pressing the push plate can release the limit of the box door by the limit assembly, so as to facilitate the operator to close the box door; by providing a sealing assembly, the sealing assembly can seal the top of the ash box through the cover plate when the ash box is not in use, so as to prevent dust from the external environment from entering the ash box and reduce the frequency of taking out the ash box for cleaning; when the box door is opened, the rotation of the box door can drive the cover plate to open, so as to facilitate the ash box to collect the swept dust; by providing a through groove, the through groove can facilitate the removal of the ash box and the sealing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0020] Figure 3 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0021] Figure 4 It is a schematic diagram of the structure of the left view of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the front view of the cover assembly of the utility model;

[0023] Among them: 1. Distribution box body; 2. Box door; 3. Dust net; 4. Lifting slide; 5. First U-shaped fixing frame; 6. Pull rope; 7. Inclined plate; 8. Second spring; 9. First fixing block; 10. T-shaped slide; 11. L-shaped plate; 12. First connecting rod; 13. Lifting block; 14. Second connecting rod; 15. Movable block; 16. Guide sleeve; 17. Push rod; 18. Push plate; 19. Rubber rope; 20. Ash collecting box; 21. Cover plate; 22. Second fixing block; 23. Torsion spring; 24. Second U-shaped fixing frame; 25. Through slot; 26. Turn rod; 27. Bolt. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] Example

[0026] Please refer to Figure 1-Figure 5 As shown, the utility model provides a distribution box with good heat dissipation performance, including a distribution box body 1, a box door 2, a dustproof net 3 and an ash collecting box 20. The front of the distribution box body 1 is hinged with a symmetrical box door 2, and the left and right sides of the distribution box body 1 are respectively provided with heat dissipation ports, and the insides of the heat dissipation ports are respectively installed with dustproof nets 3, and an ash collecting box 20 is arranged below the dustproof net 3. A pull rope 6 is fixedly arranged on the back of the box door 2, and the pull rope 6 runs through the distribution box body 1. A lifting slide 4 is fixedly arranged on the other end of the pull rope 6, and a first spring is fixedly arranged on the top surface of the lifting slide 4. A symmetrical first U-shaped fixing frame 5 and a second U-shaped fixing frame 24 are fixedly arranged on the left and right sides of the distribution box body 1. The first U-shaped fixing frame 5 is arranged on the front and rear sides of the heat dissipation port, and the first U A fixing rod is fixedly arranged between the inner top surface and the bottom surface of the first U-shaped fixing frame 5, the inner top surface of the first U-shaped fixing frame 5 is fixedly connected to the top end of the first spring, the lifting slide bar 4 is arranged on the inner side of the first U-shaped fixing frame 5, the fixing rod penetrates the lifting slide bar 4 and is connected with the lifting slide bar 4 by sliding, opening the box door 2 can drive the pull rope 6 to pull the lifting slide bar 4 to move upward along the fixing rod, and the first spring is compressed. When the box door 2 is released, the first spring pushes the lifting slide bar 4 to move downward to its original position, and brushes are installed on the bottom surface of the lifting slide bar 4 and on the side close to the distribution box body 1. The lifting slide bar 4 moves up and down, driving the brush to move up and down, thereby realizing the cleaning of the dustproof net 3, avoiding the blockage of the heat dissipation port due to the accumulation of a large amount of dust, and affecting the heat dissipation efficiency.

[0027] like Figure 1-Figure 4As shown, the left and right sides of the distribution box body 1 are provided with limit assemblies, which are composed of an inclined plate 7, a second spring 8, a first fixed block 9, a T-shaped slide 10, an L-shaped plate 11, a first connecting rod 12, a lifting block 13, a second connecting rod 14, a movable block 15, a guide sleeve 16, a push rod 17 and a push plate 18. The left and right sides of the distribution box body 1 are fixedly provided with symmetrical first fixed blocks 9, the back of the first fixed block 9 is fixedly provided with a second spring 8, and the other end of the second spring 8 is fixedly provided with an inclined plate 7, which is arranged above the dustproof net 3, and the bottom surface of the inclined plate 7 is an inclined surface. A T-shaped slider adapted to the T-shaped slide 10 is fixedly provided on the side of the inclined plate 7 close to the distribution box body 1, and the T-shaped slider is slidably connected to the distribution box body 1 through the T-shaped slide 10, and the left and right sides of the distribution box body 1 are respectively provided with symmetrical T-shaped slides 10 An L-shaped plate 11 is fixedly provided on the front of the inclined plate 7, a first connecting rod 12 is hinged on the top surface of the L-shaped plate 11, a lifting block 13 is hinged on the other end of the first connecting rod 12, a second connecting rod 14 is hinged on the top surface of the lifting block 13, a movable block 15 is hinged on the other end of the second connecting rod 14, a push rod 17 is fixedly provided on the front of the movable block 15, a push plate 18 is fixedly provided on the front of the push rod 17, guide sleeves 16 are fixedly provided on the left and right sides of the distribution box body 1, the push rod 17 penetrates the guide sleeve 16 and is connected to the guide sleeve 16 by sliding, the limit assembly can limit the position of the box door 2 after the box door 2 is opened and released, so as to facilitate the operator to inspect or repair the electrical equipment inside the distribution box body 1, and pressing the push plate 18 can release the limit of the box door 2 by the limit assembly, so as to facilitate the operator to close the box door 2.

[0028] Specifically, when the operator opens the box door 2, the box door 2 rotates and drives the pull rope 6 to pull the lifting slide bar 4 to move upward. When the lifting slide bar 4 contacts the inclined plate 7, it drives the inclined plate 7 to move outward at the same time, and the second spring 8 is compressed until the lifting slide bar 4 moves above the top surface of the inclined plate 7. At this time, the rotation angle of the box door 2 reaches the maximum, and the second spring 8 pushes the inclined plate 7 to move inward at the same time until the inclined plate 7 moves back to its original position. After releasing the box door 2, the bottom surface of the lifting slide bar 4 is close to the top surface of the inclined plate 7, and the inclined plate 7 can prevent the lifting slide bar 4 from moving downward, thereby limiting the position of the box door 2. When the box door 2 needs to be closed, the push plate 18 is pressed to drive the push plate 18 to move backward, and the movement of the push plate 18 drives the push rod 17 and the movable block 1 5 moves backward, the guide sleeve 16 cooperates with the push rod 17 to guide the movement of the movable block 15, the movement of the movable block 15 drives the second connecting rod 14 to rotate, the rotation of the second connecting rod 14 drives the lifting block 13 to move downward, the movement of the lifting block 13 drives the first connecting rod 12 to rotate at the same time, the rotation of the first connecting rod 12 drives the L-shaped plate 11 to move outward at the same time, the movement of the L-shaped plate 11 drives the inclined plate 7 to move outward at the same time, the second spring 8 is compressed until the inclined plate 7 is separated from the lifting slide bar 4, the first spring pulls the lifting slide bar 4 to move downward, the movement of the lifting slide bar 4 drives the pull rope 6 to pull the box door 2 to rotate, so as to close the box door 2, and after releasing the push plate 18, the second spring 8 pushes the inclined plate 7 to move back to its original position.

[0029] like Figure 1-Figure 5 As shown, a cover assembly is provided below the dustproof net 3, and the cover assembly consists of a rubber rope 19, a cover plate 21, a second fixed block 22, a torsion spring 23, a rotating rod 26 and a bolt 27. The top surface of the ash collecting box 20 is hinged with a cover plate 21, and a rotating rod 26 is fixedly provided on the bottom surface of the cover plate 21. A rubber rope 19 is fixedly provided at the bottom of the side of the rotating rod 26. The rubber rope 19 is made of natural rubber or synthetic rubber and has a certain elasticity. The other end of the rubber rope 19 is fixedly provided with a bolt 27. A vertical groove is provided on the top surface of the cover plate 21 to penetrate to the bottom surface. The rubber rope 19 penetrates the cover plate 21 through the vertical groove. A threaded hole adapted to the bolt 27 is provided on the bottom surface of the lifting slide bar 4, and the bolt 27 passes through the threaded hole The ash box 20 is threadedly connected to the lifting slide bar 4, and a second fixing block 22 is fixedly provided on the outside of the ash box 20. The top surface of the second fixing block 22 is provided with a torsion spring 23. The second fixing block 22 is fixedly connected to one end of the torsion spring 23, and the end of the torsion spring 23 away from the second fixing block 22 is fixedly connected to the top surface of the cover plate 21. The sealing assembly can seal the top of the ash box 20 through the cover plate 21 when the ash box 20 is not in use, thereby preventing dust from the external environment from entering the interior of the ash box 20 and reducing the frequency of taking out the ash box 20 for cleaning. When the box door 2 is opened, the rotation of the box door 2 can drive the cover plate 21 to open, thereby facilitating the ash box 20 to collect the cleaned dust.

[0030] Specifically, when the box door 2 is opened, the box door 2 rotates to drive the lifting slide bar 4 to move upward, and the movement of the lifting slide bar 4 drives the rubber rope 19 to pull the rotating rod 26 to rotate upward, and the rotation of the rotating rod 26 drives the cover plate 21 to rotate upward, the torsion spring 23 is compressed, and the rubber rope 19 is stretched, but the stretching amount of the rubber rope 19 is small, so that the cover plate 21 is gradually opened, and the thrust of the torsion spring 23 on the second U-shaped fixing frame 24 gradually increases, and the stretching amount of the rubber rope 19 gradually increases. When the rotating rod 26 rotates to a horizontal state, the cover plate 21 rotates to a vertical state. At this time, the brush of the lifting slide bar 4 begins to contact the dustproof net 3, and the lifting slide bar 4 moves upward to drive the brush to clean the dustproof net 3. The dust generated by the cleaning falls into the dust collecting box 20. The cover plate 21 has a small dust blocking effect. As the lifting slide bar 4 moves upward, the elongation of the rubber rope 19 continues to increase, the cover plate 21 and the rotating rod 26 continue to rotate, and when the extension line of the rubber rope 19 intersects the straight line where the central axis of the rotation of the cover plate 21 is located, the rotation angle of the cover plate 21 and the rotating rod 26 reaches the maximum and no longer rotates. When the lifting slide bar 4 moves to the highest point, the elongation of the rubber rope 19 reaches the maximum. When the ash box 20 is not in use, the box door 2 is closed so that the first spring pulls the lifting slide bar 4 downward, and the elongation of the rubber rope 19 gradually decreases. The torsion spring 23 pushes the cover plate 21 to rotate toward the inside of the ash box 20. The rotation of the cover plate 21 drives the rotating rod 26 to rotate until the rotating rod 26 is close to the inner wall of the ash box 20. At this time, the cover plate 21 rotates to a horizontal state, and the cover plate 21 can seal the top surface of the ash box 20.

[0031] like Figure 1-Figure 5 As shown, the outer side of the ash box 20 passes through the second U-shaped fixing frame 24 and is connected to the second U-shaped fixing frame 24 by sliding. A through groove 25 is provided between the outer side of the ash box 20 and the inner side of the second U-shaped fixing frame 24. The through groove 25 passes through the front to the back of the second U-shaped fixing frame 24. When it is necessary to clean the dust inside the ash box 20, the bolt 27 is rotated to drive the bolt 27 to disengage from the lifting slide bar 4, the bolt 27 and the rubber rope 19 are placed into the ash box 20 and the cover 21 is closed, the ash box 20 and the disassembly assembly can be pulled forward and the dust inside the ash box 20 can be cleaned. The through groove 25 can prevent the second U-shaped fixing frame 24 from bumping against the cover assembly when taking out the ash box 20 and the cover assembly, so that the ash box 20 and the cover assembly can be taken out conveniently.

[0032] Specific working principle:

[0033] When the operator opens the box door 2, the box door 2 rotates and drives the pull rope 6 to pull the lifting slide bar 4 to move upward. When the lifting slide bar 4 contacts the inclined plate 7, it drives the inclined plate 7 to move outward at the same time, and the second spring 8 is compressed. While the lifting slide bar 4 moves, it drives the rubber rope 19 to pull the rotating rod 26 to rotate upward. The rotation of the rotating rod 26 drives the cover plate 21 to rotate upward, the torsion spring 23 is compressed, and the rubber rope 19 is stretched but the stretching amount of the rubber rope 19 is small, so that the cover plate 21 is gradually opened, and the thrust of the torsion spring 23 on the second U-shaped fixing frame 24 gradually increases, and the stretching amount of the rubber rope 19 gradually increases. When the rotating rod 26 rotates to a horizontal state, the cover plate 21 rotates to a vertical state. At this time, the brush of the lifting slide bar 4 begins to contact the dustproof net 3, and the lifting slide bar 4 moves upward to drive the brush to clean the dustproof net 3, and the dust generated by the cleaning falls into the collecting Inside the ash box 20, the cover 21 has a smaller dust blocking effect. As the lifting slide 4 moves upward, the elongation of the rubber rope 19 continues to increase, and the cover 21 and the rotating rod 26 continue to rotate. When the extension line of the rubber rope 19 intersects the straight line where the central axis of the rotation of the cover 21 is located, the rotation angle of the cover 21 and the rotating rod 26 reaches a maximum and no longer rotates until the lifting slide 4 moves above the top surface of the inclined plate 7. The elongation of the rubber rope 19 reaches a maximum, and the rotation angle of the box door 2 reaches a maximum. The second spring 8 pushes the inclined plate 7 to move inward at the same time until the inclined plate 7 moves back to its original position. After the box door 2 is released, the bottom surface of the lifting slide 4 is close to the top surface of the inclined plate 7. The inclined plate 7 can prevent the lifting slide 4 from moving downward, thereby limiting the position of the box door 2, making it convenient for operators to inspect or repair electrical equipment inside the distribution box body 1.

[0034] When the door 2 needs to be closed, the push plate 18 is pressed to drive the push plate 18 to move backward, and the movement of the push plate 18 drives the push rod 17 and the movable block 15 to move backward. The guide sleeve 16 cooperates with the push rod 17 to guide the movement of the movable block 15. The movement of the movable block 15 drives the second connecting rod 14 to rotate, and the rotation of the second connecting rod 14 drives the lifting block 13 to move downward. The movement of the lifting block 13 drives the first connecting rod 12 to rotate at the same time, and the rotation of the first connecting rod 12 drives the L-shaped plate 11 to move outward at the same time. The movement of the L-shaped plate 11 drives the inclined plate 7 to move outward at the same time, and the second spring 8 is compressed until the inclined plate 7 is separated from the lifting slide 4, the first spring pulls the lifting slide bar 4 to move downward, and the movement of the lifting slide bar 4 drives the pull rope 6 to pull the box door 2 to rotate, so as to close the box door 2. During the downward movement of the lifting slide bar 4, the elongation of the rubber rope 19 gradually decreases, and the torsion spring 23 pushes the cover plate 21 to rotate toward the inside of the ash collecting box 20. The rotation of the cover plate 21 drives the rotating rod 26 to rotate until the rotating rod 26 is close to the inner wall of the ash collecting box 20. At this time, the cover plate 21 rotates to a horizontal state, and the cover plate 21 can cover the top surface of the ash collecting box 20, thereby preventing dust from the external environment from entering the interior of the ash collecting box 20 and reducing the frequency of taking out the ash collecting box 20 for cleaning.

[0035] When it is necessary to clean the dust inside the ash box 20, turn the bolt 27 to drive the bolt 27 to disengage from the lifting slide bar 4, put the bolt 27 and the rubber rope 19 into the ash box 20 and close the cover 21, then the ash box 20 and the disassembly assembly can be pulled forward and the dust inside the ash box 20 can be cleaned. The through groove 25 can prevent the second U-shaped fixing frame 24 from causing collision with the cover assembly when taking out the ash box 20 and the cover assembly, making it convenient to take out the ash box 20 and the cover assembly.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A distribution box with good heat dissipation performance, comprising a distribution box body (1), a box door (2), a dust screen (3) and a dust collection box (20), wherein the front of the distribution box body (1) is hinged with a symmetrical box door (2), the left and right sides of the distribution box body (1) are respectively provided with dust screens (3), and a dust collection box (20) is provided below the dust screen (3), characterized in that: A limit assembly, the limit assembly being arranged on the left and right sides of the distribution box body (1), and the limit assembly can limit the position of the box door (2) after the box door (2) is opened and released; A cover assembly, the cover assembly is arranged below the dustproof net (3), and the cover assembly can cover the top of the ash collection box (20) when the ash collection box (20) is not in use; A through slot (25), wherein the through slot (25) is arranged outside the ash collecting box (20), and the through slot (25) can facilitate the removal of the ash collecting box (20) and the sealing cover assembly.

2. A distribution box with good heat dissipation performance according to claim 1, characterized in that: The distribution box body (1) is provided with heat dissipation openings on the left and right sides respectively, the dustproof net (3) is installed inside the heat dissipation openings, a pull rope (6) is fixedly provided on the back of the box door (2), the pull rope (6) runs through the distribution box body (1), the other end of the pull rope (6) is fixedly provided with a lifting slide bar (4), and the distribution box body (1) is fixedly provided with symmetrical first U-shaped fixing frames (5) on the left and right sides, a fixing rod is fixedly provided between the inner top surface and the bottom surface of the first U-shaped fixing frame (5), a first spring is fixedly provided on the inner top surface of the first U-shaped fixing frame (5), and the other end of the first spring is fixedly provided with the lifting slide bar. The lifting slide bar (4) is fixedly connected to the top surface thereof, the bottom surface of the lifting slide bar (4) and the side close to the distribution box body (1) are both installed with brushes, the fixing rod passes through the lifting slide bar (4) and is connected to the lifting slide bar (4) by sliding, the left and right sides of the distribution box body (1) are fixedly provided with symmetrical second U-shaped fixing frames (24), the outer side of the dust collecting box (20) passes through the second U-shaped fixing frame (24) and is connected to the second U-shaped fixing frame (24) by sliding, the through groove (25) is provided on the inner side of the second U-shaped fixing frame (24), and the through groove (25) passes through the front to the back of the second U-shaped fixing frame (24).

3. A distribution box with good heat dissipation performance according to claim 2, characterized in that: The limiting assembly comprises an inclined plate (7), a second spring (8), a first fixed block (9), a T-shaped slide groove (10), an L-shaped plate (11), a first connecting rod (12), a lifting block (13), a second connecting rod (14), a movable block (15), a guide sleeve (16), a push rod (17) and a push plate (18), wherein the first fixed block (9) is symmetrically fixed to the left and right sides of the distribution box body (1), the second spring (8) is fixedly arranged on the back side of the first fixed block (9), the inclined plate (7) is fixedly arranged on the other end of the second spring (8), and the T-shaped slide groove (10) is symmetrically arranged on the distribution box body. The main body (1) is provided with an L-shaped plate (11) fixedly arranged on the front face of the inclined plate (7), the first connecting rod (12) is hingedly connected to the top face of the L-shaped plate (11), the lifting block (13) is hingedly connected to the other end of the first connecting rod (12), the second connecting rod (14) is hingedly connected to the top face of the lifting block (13), the movable block (15) is hingedly connected to the other end of the second connecting rod (14), the push rod (17) is fixedly arranged on the front face of the movable block (15), the push plate (18) is fixedly arranged on the front face of the push rod (17), and the guide sleeve (16) is fixedly arranged on the left and right sides of the main body (1) of the distribution box.

4. A distribution box with good heat dissipation performance according to claim 3, characterized in that: A T-shaped slider adapted to the T-shaped slide groove (10) is fixedly provided on one side of the inclined plate (7) close to the distribution box body (1); the T-shaped slider is slidably connected to the distribution box body (1) via the T-shaped slide groove (10); and the push rod (17) passes through the guide sleeve (16) and is slidably connected to the guide sleeve (16).

5. A distribution box with good heat dissipation performance according to claim 2, characterized in that: The cover assembly comprises a rubber rope (19), a cover plate (21), a second fixed block (22), a torsion spring (23), a rotating rod (26) and a bolt (27); the cover plate (21) is hinged to the top surface of the ash collecting box (20); the rotating rod (26) is fixedly arranged on the bottom surface of the cover plate (21); the rubber rope (19) is fixedly arranged at the bottom of the side of the rotating rod (26); the bolt (27) is fixedly arranged at the other end of the rubber rope (19); the second fixed block (22) is fixedly arranged on the outside of the ash collecting box (20); and one end of the torsion spring (23) is fixedly arranged on the top surface of the second fixed block (22).

6. A distribution box with good heat dissipation performance according to claim 5, characterized in that: The top surface of the cover plate (21) is provided with a vertical groove extending from the bottom surface thereof, the rubber rope (19) passes through the cover plate (21) through the vertical groove, one end of the torsion spring (23) away from the second fixing block (22) is fixedly connected to the top surface of the cover plate (21), and the bottom surface of the lifting slide bar (4) is provided with a threaded hole adapted for a bolt (27), and the bolt (27) is threadedly connected to the lifting slide bar (4) through the threaded hole.

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