Fixing structure of high-voltage heavy-current heavy fuse

Abstract

The utility model provides a fixing structure of a high-voltage heavy-current heavy-duty fuse, comprising a cabinet body and two fuse bodies, the two fuse bodies are installed inside the cabinet body, a first epoxy plate is horizontally and fixedly installed inside the cabinet body through screws, the surface of the first epoxy plate is provided with two through holes, and the two through holes are communicated with the cabinet body. The copper bars of the two fuse bodies are fixedly installed on the surface of the first epoxy plate through screws. The first epoxy plate is installed in the cabinet body and used for installing the fuse bodies, the two fuse bodies are separated through the second epoxy plate, and the first epoxy plate and the second epoxy plate are made of epoxy resin, so that compared with a traditional metal support or frame, the first epoxy plate and the second epoxy plate are made of epoxy resin. The first epoxy plate and the second epoxy plate have insulation characteristics while having large supporting strength, can provide good support for the fuse body, and can effectively isolate interference.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically to the fixing structure of a high-voltage, high-current heavy-duty fuse. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting a fusible element when the current exceeds a specified value. It can break the circuit by melting the fusible element with the heat generated by itself after the current exceeds the specified value for a period of time. Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short circuit and overcurrent protectors and are one of the most commonly used protective devices.

[0003] When high-voltage, high-current heavy-duty fuses are installed inside the cabinet, they are mostly directly mounted on brackets or frames inside the cabinet. However, after installation, the high-voltage, high-current heavy-duty fuses lack support, and the brackets or frames are often made of the same metal material as the cabinet, which does not have insulating properties and cannot isolate interference. As a result, the high-voltage, high-current heavy-duty fuses are easily interfered with during use. Utility Model Content

[0004] The purpose of this invention is to provide a fixing structure for high-voltage, high-current, heavy-duty fuses to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mounting structure for a high-voltage, high-current, heavy-duty fuse includes a cabinet and two fuse bodies. The two fuse bodies are installed inside the cabinet. A first epoxy board is horizontally fixed inside the cabinet by screws. The surface of the first epoxy board has two through holes. The copper busbars of the two fuse bodies are fixed to the surface of the first epoxy board by screws. The two fuses are concentrically positioned above the through holes. A second epoxy board is vertically fixed to the surface of the first epoxy board, located between the two fuse bodies. A third epoxy board is vertically fixed inside the cabinet by screws. The surface of the third epoxy board has a notch, and the top of the second epoxy board extends into the notch.

[0007] Preferably, a heat dissipation vent cleaning mechanism is installed on the back of the bottom of the cabinet. The heat dissipation vent cleaning mechanism includes a housing, threaded rods, a traction plate, a connecting seat, and a brush. The housing is fixedly installed at the heat dissipation vent on the back of the bottom of the cabinet by screws. A protective net is provided at the bottom of the housing. The two threaded rods are vertically rotatably connected to the inside of the housing by a drive mechanism. The traction plate is threadedly connected to the surface of the two threaded rods. The brush is fixedly installed on one side of the connecting seat. The other side of the connecting seat is horizontally slidably connected to the side of the traction plate by an elastic mechanism.

[0008] Preferably, a guide structure is provided between the connecting seat and the housing. The guide structure includes a groove, a cavity, a first spring, and a guide rod. The cavity is located on the side wall of the connecting seat. One end of the guide rod is slidably connected to the inside of the cavity. The first spring is fixedly connected between the guide rod and the cavity. The groove is located on the inner wall of the housing. The other end of the guide rod is slidably connected to the inside of the groove. The trajectory of the groove is an isosceles trapezoid.

[0009] Preferably, the slide is divided into a first section, a second section, a third section, and a fourth section. The first and third sections are inclined, while the second and fourth sections are vertical. The first, second, and fourth sections have the same depth, and the third section has a greater depth than the first, second, and fourth sections. Initially, one end of the guide rod is at the beginning of the second section, and the first spring is in a compressed state.

[0010] Preferably, the connection between the end of the third groove segment and the beginning of the fourth groove segment is made by an arc surface.

[0011] Preferably, the elastic mechanism includes a second spring and a telescopic rod, both of which are fixedly connected between the traction plate and the connecting seat, with the second spring sleeved on the surface of the telescopic rod.

[0012] Preferably, the drive mechanism includes a motor, a bracket, and a rotating shaft. The bracket is fixedly installed inside the housing, the rotating shaft is rotatably connected between the housing and the bracket, the motor is fixedly installed on the top of the bracket and connected to the rotating shaft, and the rotating shaft is driven by a synchronous pulley and a synchronous belt to a threaded rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model has a first epoxy board installed inside the cabinet for mounting the fuse body, and a second epoxy board to separate the two fuse bodies. Since both the first and second epoxy boards are made of epoxy resin, compared with traditional metal brackets or frames, the first and second epoxy boards have high support strength and insulation properties, which can provide good support for the fuse body and effectively isolate interference.

[0015] 2. This utility model is equipped with a heat dissipation vent cleaning mechanism at the heat dissipation vent on the bottom back of the cabinet. The heat dissipation vent cleaning mechanism uses a downward-moving brush to clean the heat dissipation vent, and the dust on the heat dissipation vent is discharged to the outside through the protective net to prevent the dust from clogging the heat dissipation vent and affecting the heat dissipation effect inside the cabinet. In addition, the brush can move away from the heat dissipation vent when it returns to its original position to prevent the brush from bringing the dust back to the surface of the heat dissipation vent. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the cabinet of this utility model;

[0017] Figure 2 This is a schematic diagram of the back structure of the cabinet of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram of area A in the middle;

[0019] Figure 4 This is a schematic diagram of the connection structure between the first epoxy board and the fuse body of this utility model;

[0020] Figure 5 This is a schematic diagram of the bottom structure of the shell of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the housing of this utility model;

[0022] Figure 7 This is a schematic diagram of the main structure of the drive mechanism of this utility model;

[0023] Figure 8 This is a schematic diagram of the connection structure between the traction plate and the connecting seat of this utility model;

[0024] Figure 9 This is a schematic diagram of the connection structure between the guide rod and the connecting seat of this utility model;

[0025] Figure 10 This is a schematic diagram of the main structure of the slide groove of this utility model.

[0026] In the diagram: 1. Cabinet; 2. Fuse body; 3. First epoxy board; 4. Through hole; 5. Second epoxy board; 6. Third epoxy board; 7. Notch; 8. Shell; 9. Threaded rod; 10. Traction plate; 11. Connecting seat; 12. Brush; 13. Slide groove; 131. First groove segment; 132. Second groove segment; 133. Third groove segment; 134. Fourth groove segment; 14. Cavity; 15. First spring; 16. Guide rod; 17. Curved surface; 18. Second spring; 19. Telescopic rod; 20. Motor; 21. Bracket; 22. Shaft; 23. Synchronous pulley; 24. Synchronous belt; 25. Protective net. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-10 This utility model provides a fixing structure for a high-voltage, high-current heavy-duty fuse, including a cabinet 1 and two fuse bodies 2. The two fuse bodies 2 are installed inside the cabinet 1. A first epoxy board 3 is horizontally fixed inside the cabinet 1 by screws. The surface of the first epoxy board 3 is provided with two through holes 4. The copper busbars of the two fuse bodies 2 are fixed to the surface of the first epoxy board 3 by screws. The two fuses are respectively concentrically arranged above the through holes 4. A second epoxy board 5 is vertically fixed to the surface of the first epoxy board 3. The second epoxy board 5 is located between the two fuse bodies 2. A third epoxy board 6 is vertically fixed inside the cabinet 1 by screws. The surface of the third epoxy board 6 is provided with a notch 7. The top of the second epoxy board 5 extends into the notch 7.

[0029] Please see Figure 1-4 The first epoxy board 3, the second epoxy board 5, and the third epoxy board 6 are all made of epoxy resin, which has high support strength. Therefore, the first epoxy board 3 can provide good support for the fuse body 2. Furthermore, since the first epoxy board 3, the second epoxy board 5, and the third epoxy board 6 have insulating properties, they can isolate external interference to the fuse body 2.

[0030] A heat dissipation vent cleaning mechanism is installed on the back of the bottom of the cabinet 1. The heat dissipation vent cleaning mechanism includes a housing 8, threaded rods 9, a traction plate 10, a connecting seat 11, and a brush 12. The housing 8 is fixedly installed at the heat dissipation vent on the back of the bottom of the cabinet 1 by screws. A protective net 25 is provided at the bottom of the housing 8. The two threaded rods 9 are vertically rotatably connected to the inside of the housing 8 by a drive mechanism. The traction plate 10 is threadedly connected to the surface of the two threaded rods 9. The brush 12 is fixedly installed on one side of the connecting seat 11. The other side of the connecting seat 11 is horizontally slidably connected to the side of the traction plate 10 by an elastic mechanism. The elastic mechanism includes a second spring 18 and a telescopic rod 19. The telescopic rod 19 and the second spring 18 are both fixedly connected between the traction plate 10 and the connecting seat 11. The second spring 18 is sleeved on the surface of the telescopic rod 19.

[0031] Please see Figure 1 , 5The drive mechanism can drive the threaded rod 9 to rotate vertically. By periodically driving the threaded rod 9 to rotate back and forth, it can drive the traction plate 10 to perform vertical reciprocating motion. When the traction plate 10 moves down, the traction plate 10 can drive the connecting seat 11 to move vertically down through the elastic mechanism, which in turn causes the connecting seat 11 to drive the brush 12 to move vertically down. During the downward movement, the brush 12 can sweep off the dust on the surface of the heat dissipation port. Under the action of gravity, the dust falls through the protective net 25 to the outside of the housing 8.

[0032] In the above solution, the heat dissipation vent can be cleaned by moving the brush 12 downward. However, when the brush 12 moves upward and resets, it will push some dust remaining on the heat dissipation vent upward and let it enter the interior of the housing 8 through the heat dissipation vent. Therefore, in this example, a guide structure is provided between the connecting seat 11 and the housing 8. The guide structure includes a slide groove 13, a cavity 14, a first spring 15 and a guide rod 16. The cavity 14 is provided on the side wall of the connecting seat 11. One end of the guide rod 16 is slidably connected to the interior of the cavity 14. The first spring 15 is fixedly connected between the guide rod 16 and the cavity 14. The slide groove 13 is provided on the inner wall of the housing 8. The other end of the guide rod 16 is slidably connected to the interior of the slide groove 13. The trajectory of the slide groove 13 is an isosceles trapezoid.

[0033] Please see Figure 6 , 8 9 and 10, when the brush 12 moves down, the connecting seat 11 can drive the guide rod 16 to move down synchronously. The guide rod 16 can move inside the slide groove 13 at this time. When the brush 12 moves down to the lowest point, one end of the guide rod 16 reaches the lowest end of the slide groove 13. Then the brush 12 moves up to reset. The guide rod 16 can then move up along the trajectory of the slide groove 13 at an angle for a certain distance. At this time, the brush 12 will move away from the heat dissipation port. Finally, one end of the guide rod 16 will move up normally inside the slide groove 13. During this process, the brush 12 will not come into contact with the heat dissipation port.

[0034] Specifically, the slide 13 is divided into a first groove segment 131, a second groove segment 132, a third groove segment 133, and a fourth groove segment 134. The first groove segment 131 and the third groove segment 133 are inclined, while the second groove segment 132 and the fourth groove segment 134 are vertical. The first groove segment 131, the second groove segment 132, and the fourth groove segment 134 have the same depth, while the third groove segment 133 has a greater depth than the first groove segment 131, the second groove segment 132, and the fourth groove segment 134. Initially, one end of the guide rod 16 is at the beginning of the second groove segment 132, and the first spring 15 is in a compressed state. The connection between the end of the third groove segment 133 and the beginning of the fourth groove segment 134 is made by the arc surface 17.

[0035] Please see Figure 10When the brush 12 moves downward, one end of the guide rod 16 is at the beginning of the second groove 132. When the brush 12 moves to the lowest point, one end of the guide rod 16 moves from the beginning of the second groove 132 to the end (i.e., the beginning of the third groove 133). During this process, the guide rod 16 compresses the first spring 15 inside the cavity 14 to store energy. Since the depth of the third groove 133 is greater than that of the second groove 132, when one end of the guide rod 16 enters the third groove 133, the first spring 15 can release its elastic force, causing one end of the guide rod 16 to abut against the inner wall of the third groove 133. At this time, when the brush 12 moves upward, it will drive the guide rod 16 to move inside the inclined third groove 133 through the connecting seat 11 until the guide rod 16 enters the fourth groove 134. During this process, The brush 12 will gradually move away from the heat dissipation vent, and the distance between the connecting seat 11 and the traction plate 10 will shorten simultaneously. At the same time, the second spring 18 is compressed to store energy. The brush 12 is still in an upward state at this time, so the guide rod 16 can enter the vertical fourth groove 134 through the arc surface 17 at the end of the third groove 133 until the guide rod 16 moves to the end of the fourth groove 134 (i.e. the beginning of the first groove 131). When the guide rod 16 enters the first groove 131, the second spring 18 can release energy, driving one end of the guide rod 16 to re-enter the beginning of the second groove 132 along the first groove 131. This completes the process of the brush 12 first descending and then resetting. Through the continuous cycle of the above process, the brush 12 can efficiently clean the heat dissipation vent.

[0036] The drive mechanism includes a motor 20, a bracket 21 and a rotating shaft 22. The bracket 21 is fixedly installed inside the housing 8. The rotating shaft 22 is rotatably connected between the housing 8 and the bracket 21. The motor 20 is fixedly installed on the top of the bracket 21 and connected to the rotating shaft 22. The rotating shaft 22 is driven by the threaded rod 9 through the synchronous pulley 23 and the synchronous belt 24.

[0037] Please see Figure 6 and 7 The motor 20 can drive the rotating shaft 22 to rotate, and the rotating shaft 22 drives the threaded rod 9 to rotate through the synchronous pulley 23 and the synchronous belt 24. By changing the rotation direction of the motor 20, the rotation direction of the threaded rod 9 can be changed, so as to realize the periodic reciprocating rotation of the threaded rod 9.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a high-voltage, high-current heavy-duty fuse, comprising a cabinet (1) and two fuse bodies (2), wherein the two fuse bodies (2) are installed inside the cabinet (1), characterized in that: The cabinet (1) is horizontally fixed inside by screws. The surface of the first epoxy board (3) is provided with two through holes (4). The copper busbars of the two fuse bodies (2) are fixed to the surface of the first epoxy board (3) by screws. The two fuses are respectively concentrically arranged above the through holes (4). The surface of the first epoxy board (3) is vertically fixed to the second epoxy board (5). The second epoxy board (5) is located between the two fuse bodies (2). The cabinet (1) is vertically fixed inside by screws to the third epoxy board (6). The surface of the third epoxy board (6) is provided with a notch (7). The top of the second epoxy board (5) extends into the notch (7).

2. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 1, characterized in that: A heat dissipation vent cleaning mechanism is installed on the back of the bottom of the cabinet (1). The heat dissipation vent cleaning mechanism includes a housing (8), threaded rods (9), a traction plate (10), a connecting seat (11), and a brush (12). The housing (8) is fixedly installed at the heat dissipation vent on the back of the bottom of the cabinet (1) by screws. A protective net (25) is provided at the bottom of the housing (8). The two threaded rods (9) are vertically rotated and connected to the inside of the housing (8) by a drive mechanism. The traction plate (10) is threadedly connected to the surface of the two threaded rods (9). The brush (12) is fixedly installed on one side of the connecting seat (11). The other side of the connecting seat (11) is horizontally slidably connected to the side of the traction plate (10) by an elastic mechanism.

3. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 2, characterized in that: A guide structure is provided between the connecting seat (11) and the housing (8). The guide structure includes a groove (13), a cavity (14), a first spring (15), and a guide rod (16). The cavity (14) is located on the side wall of the connecting seat (11). One end of the guide rod (16) is slidably connected to the inside of the cavity (14). The first spring (15) is fixedly connected between the guide rod (16) and the cavity (14). The groove (13) is located on the inner wall of the housing (8). The other end of the guide rod (16) is slidably connected to the inside of the groove (13). The trajectory of the groove (13) is an isosceles trapezoid.

4. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 3, characterized in that: The slide (13) is divided into a first groove segment (131), a second groove segment (132), a third groove segment (133), and a fourth groove segment (134). The first groove segment (131) and the third groove segment (133) are inclined, while the second groove segment (132) and the fourth groove segment (134) are vertical. The first groove segment (131), the second groove segment (132), and the fourth groove segment (134) have the same depth. The third groove segment (133) has a greater depth than the first groove segment (131), the second groove segment (132), and the fourth groove segment (134). Initially, one end of the guide rod (16) is at the beginning of the second groove segment (132), and the first spring (15) is in a compressed state.

5. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 4, characterized in that: The connection between the end of the third groove segment (133) and the beginning of the fourth groove segment (134) is made by an arc surface (17).

6. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 2, characterized in that: The elastic mechanism includes a second spring (18) and a telescopic rod (19). The telescopic rod (19) and the second spring (18) are both fixedly connected between the traction plate (10) and the connecting seat (11). The second spring (18) is sleeved on the surface of the telescopic rod (19).

7. The fixing structure of the high-voltage, high-current heavy-duty fuse according to claim 2, characterized in that: The drive mechanism includes a motor (20), a bracket (21) and a rotating shaft (22). The bracket (21) is fixedly installed inside the housing (8). The rotating shaft (22) is rotatably connected between the housing (8) and the bracket (21). The motor (20) is fixedly installed on the top of the bracket (21) and connected to the rotating shaft (22). The rotating shaft (22) is driven by a synchronous pulley (23) and a synchronous belt (24) to a threaded rod (9).

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