Bus duct with good heat dissipation effect and use method thereof

Abstract

The application discloses a bus duct with good heat dissipation effect and a use method thereof, which comprises a bus duct body, heat dissipation holes and dustproof plates, a plurality of groups of heat dissipation holes are arranged at equal intervals on the outer wall of the bus duct body, a rotating shaft is integrally formed at the bottom end of the inner wall of the heat dissipation hole, a rotating piece is rotatably arranged in the rotating shaft, a sleeve rod is fixedly installed at the top end of the rotating piece, and a dustproof plate is installed on the surface of the sleeve rod; the top end of the sleeve rod is connected with other sleeve rods through a transmission mechanism, and the transmission mechanism is arranged at the top end of the inner wall of the heat dissipation hole; the rotating shaft, the rotating piece and the sleeve rod are arranged, so that the heat dissipation holes can effectively improve the heat dissipation efficiency, and at the same time, dust and sundries in the air can easily enter the bus duct; dust adhered to the surface of the bus duct can reduce the insulation performance of the insulating material, thereby reducing the insulation resistance of the bus duct; when the insulation resistance of the bus duct is lower than the minimum requirement, current leakage and short circuit electrical faults can be caused, and the safety of the device is improved.

Description

Technical Field

[0001] This invention relates to a busbar trunking with good heat dissipation and its usage method. Background Technology

[0002] With the emergence of modern engineering facilities and equipment, the electricity consumption of all industries has increased rapidly. In particular, with the emergence of numerous high-rise buildings and large factory workshops, traditional cables, as power transmission conductors, can no longer meet the requirements of high-current transmission systems. The parallel use of multiple cables has brought many inconveniences to on-site installation and construction connections. Plug-in busbar trunking has emerged as a new type of power distribution conductor. Busbar trunking is a closed metal device made of copper and aluminum busbar columns. It is used to distribute a large amount of power to various components of a distributed system. Compared with traditional cables, it can fully demonstrate its superiority when transmitting high current. It has the advantages of series matching, commercial production, small size, large capacity, short design and construction cycle, convenient installation and disassembly, non-combustible, safe and reliable, and long service life. During long-term use, if the power consumption is high and the temperature rises rapidly, the insulation material inside the busbar may age faster, thus reducing the safety factor. Therefore, heat dissipation holes are made on the outer shell of the busbar. However, in actual use, although the heat dissipation holes improve heat dissipation efficiency, they also allow dust and debris in the air to easily enter the busbar. Dust adhering to the surface of the busbar reduces the insulation performance of the insulation material, resulting in a decrease in the insulation resistance of the busbar. When the insulation resistance of the busbar falls below the minimum requirement, it may lead to electrical faults such as current leakage and short circuits, affecting the normal operation and safety of the busbar. To address this, we propose a busbar with good heat dissipation and its usage method. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a busbar trunking with good heat dissipation and its usage method. Through a rotating shaft, rotating components, and a sleeve rod, the operator pushes a dust baffle, causing it to rotate under the constraint of the shaft, thus opening the dust baffle and allowing heat dissipation through ventilation holes. Simultaneously, the sleeve rod drives a gear belt, which in turn drives other gears to rotate synchronously. These gears then drive the dust baffles connected below them, enabling all dust baffles to open quickly. When the busbar trunking body temperature is detected to be high, all dust baffles are opened promptly for heat dissipation, and the baffles are quickly closed after the temperature drops. This reduces the time it takes for air to enter the busbar trunking body through the ventilation holes, improving the safety of the device.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a busbar trunking with good heat dissipation effect and its usage method, comprising a busbar trunking body, heat dissipation holes and a dust baffle plate. Several sets of heat dissipation holes are equidistantly arranged on both sides of the outer wall of the busbar trunking body. A rotating shaft is integrally formed at the bottom of the inner wall of the heat dissipation hole, and a rotating component is rotatably arranged inside the rotating shaft. A sleeve rod is fixedly installed at the top of the rotating component, and a dust baffle plate is sleeved on the surface of the sleeve rod. The top of the sleeve rod is connected to other sleeve rods through a transmission mechanism, and the transmission mechanism is located at the top of the inner wall of the heat dissipation hole.

[0005] As a preferred embodiment of the present invention, the transmission mechanism includes an integrally formed mounting groove at the top of the inner wall of the heat dissipation hole, and a rotating ring with the same number of heat dissipation holes is rotatably arranged at the bottom of the inner wall of the mounting groove. A sleeve rod is provided through the middle of each rotating ring, and a gear is mounted on the top of each set of sleeve rods. A gear belt is meshed on the surface of multiple sets of gears.

[0006] As a preferred embodiment of the present invention, a rectangular slot is provided on the top surface of the sleeve rod, and a protrusion that meshes with the slot is integrally formed on the inner wall surface of the gear.

[0007] As a preferred embodiment of the present invention, a rotating rod is fixedly installed at the top of any group of sleeve rods, and the rotating rod passes through the top of the inner wall of the mounting groove.

[0008] As a preferred embodiment of the present invention, the outer wall surface of the rotating component is provided with a rotating groove, and the inner wall surface of the rotating shaft is integrally formed with an annular guide rail, and the guide rail is embedded inside the rotating groove.

[0009] As a preferred embodiment of the present invention, the top and bottom surfaces of the guide rail are provided with ball grooves at equal intervals, and the ball grooves are all embedded with rolling balls. The top and bottom surfaces of the inner wall of the rotating groove are provided with annular guide grooves, and the balls can roll in contact with the inner wall of the guide groove.

[0010] As a preferred technical solution of the present invention, a connecting mechanism is provided on the side of the sleeve rod near the rotating ring. The connecting structure includes a split connecting rod that is separately provided at the top of the sleeve rod, and the bottom surface of the split connecting rod is in contact with the top surface of the sleeve rod. A telescopic rod is provided inside the split connecting rod, and a collar is fixedly installed at the bottom of the telescopic rod. Several sets of meshing blocks are equidistantly arranged around the inner wall of the collar. The top of the sleeve rod has a slot, and a guide rod is integrally formed in the middle of the inner wall of the slot. The outer wall surface of the guide rod has meshing grooves that are equidistant from each other, the same number as the meshing blocks. All meshing grooves are L-shaped grooves with open tops, and all meshing blocks can be inserted into the meshing grooves. The outer wall surface of the slot is provided with an inverted L-shaped adjustment hole, and an adjustment rod is fixedly installed on the outer wall surface of the collar. The adjustment rod can drive the collar to move and rotate under the restriction of the adjustment hole. The surface of the split connecting rod is provided with a slot with the same width as the vertical part of the adjustment hole.

[0011] As a preferred embodiment of the present invention, a spring is wound around the surface of the guide rod, one end of the spring is connected to the bottom end of the inner wall of the split connecting rod, and the other end is attached to the bottom end surface of the collar.

[0012] As a preferred embodiment of the present invention, the surface of the adjusting rod is provided with a plurality of grooves at equal intervals.

[0013] The present invention also provides a technical solution, a method for using a busbar trunking with good heat dissipation, the specific steps of which are as follows: S1. By pulling the adjusting rod, the adjusting rod moves the collar under the constraint of the vertical slot hole on the surface of the split connecting rod. The collar moves with the cooperation of the telescopic rod, and the collar moves out from the inside of the split connecting rod and inserts into the slot. The adjusting rod is inserted into the vertical part of the adjusting hole. S2. During the movement of the collar inserted into the slot, the meshing block set on the inner wall is inserted into the vertical part of the meshing groove through the top of the meshing groove. After the meshing block touches the bottom, the adjusting rod is rotated to rotate from the vertical part of the adjusting hole to the horizontal part. At the same time, the adjusting rod drives the collar to rotate, so that the collar drives the meshing block to rotate into the horizontal part of the meshing groove. The guide rod is connected to the collar. With the cooperation of the collar and the adjusting rod, the sleeve rod is connected to the split connecting rod. S3. Rotate the rotating rod to make the rotating rod drive the split connecting rod to rotate. The split connecting rod can drive the rotating part to rotate under the restriction of the rotating shaft through the sleeve rod. The rotating part drives the rotating groove to rotate under the restriction of the guide rail and drives the ball to be fixed inside the ball groove. S4. As the sleeve rotates, the dust baffle changes angle, so that the dust baffle no longer completely covers the heat dissipation holes, allowing the heat inside the busbar trunking to be conducted through the air entering from the heat dissipation holes and thus dissipating the heat. S5. During rotation, the split connecting rod drives the gear to rotate, which in turn drives other gears to rotate synchronously via the gear belt. This allows other gears to adjust the angle of other dust baffles together. When a dust baffle does not need to be opened, the connection between the split connecting rod and the sleeve rod can be released.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. By using a rotating shaft, rotating parts, and sleeve rods, the design effectively prevents dust and debris from easily entering the busbar trunking, even though the heat dissipation holes improve heat dissipation efficiency. Dust adhering to the surface of the busbar trunking reduces the insulation performance of the insulation material, leading to a decrease in the insulation resistance of the busbar trunking. When the insulation resistance of the busbar trunking falls below the minimum requirement, it may cause electrical faults such as current leakage and short circuits. By pushing the dust baffles, the dust baffles are driven by the sleeve rods to rotate under the restriction of the rotating shafts. The dust baffles open and dissipate heat through the heat dissipation holes. At the same time, the sleeve rods drive the gear belt to rotate, which in turn drives other gears to rotate synchronously. These other gears drive the dust baffles connected below them to rotate, allowing all the dust baffles to open quickly. When the temperature of the busbar trunking body is detected to be high, all the dust baffles are opened in time to dissipate heat, and the dust baffles are quickly closed after the temperature drops, reducing the time for air to enter the interior of the busbar trunking body through the heat dissipation holes and improving the safety of the device. 2. By using a separate connecting rod, slot, and guide rod, the connection between the gear and the sleeve rod can be separated. By rotating the separate connecting rod, the connecting rod drives the collar to rotate via the telescopic rod. The collar drives the meshing block to rotate out from inside the guide rod. At the same time, the adjusting rod rotates out from inside the adjusting hole. The connection between the sleeve rod and the separate connecting rod is released, and the gear can no longer drive the sleeve rod to rotate via the separate connecting rod. The dust baffle can no longer rotate, thus achieving the purpose of individually controlling the opening and closing of individual dust baffles and improving the convenience of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the dust baffle of the present invention; Figure 3 This is a frontal cross-sectional view of the present invention. Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B; Figure 6 For the present invention Figure 3 Enlarged schematic diagram of the structure at point C; Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at point D.

[0016] The components are as follows: 1. Busbar trunking body; 2. Heat dissipation hole; 3. Dust baffle; 41. Rotating shaft; 42. Rotating component; 43. Sleeve rod; 44. Rotating ring; 51. Mounting groove; 52. Gear; 53. Gear belt; 54. Rotating rod; 61. Guide rail; 62. Rotating groove; 63. Ball groove; 64. Ball; 65. Guide groove; 71. Split connecting rod; 72. Slot; 73. Guide rod; 74. Spring; 75. Engaging groove; 76. Telescopic rod; 77. Collar; 78. Engaging block; 79. Adjusting hole; 8. Adjusting rod. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0018] Example: like Figure 1 - Figure 7 As shown, this embodiment proposes a busbar trunking with good heat dissipation effect, including a busbar trunking body 1, heat dissipation holes 2 and dust baffles 3. Several sets of heat dissipation holes 2 are equidistantly arranged on both sides of the outer wall of the busbar trunking body 1. A rotating shaft 41 is integrally formed at the bottom of the inner wall of the heat dissipation hole 2, and a rotating component 42 is rotatably arranged inside the rotating shaft 41. A sleeve rod 43 is fixedly installed at the top of the rotating component 42, and a dust baffle 3 is sleeved on the surface of the sleeve rod 43. The top end of the sleeve rod 43 is connected to other sleeve rods 43 through a transmission mechanism, and the transmission mechanism is located at the top end of the inner wall of the heat dissipation hole 2; The transmission mechanism includes an integrally formed mounting groove 51 at the top of the inner wall of the heat dissipation hole 2, and a rotating ring 44 with the same number as the heat dissipation hole 2 is rotatably provided at the bottom of the inner wall of the mounting groove 51. A sleeve rod 43 is provided through the middle of each rotating ring 44. A gear 52 is mounted on the top of each set of sleeve rods 43, and a gear belt 53 is meshed on the surface of multiple sets of gears 52. When heat dissipation is required, the operator pushes the dust baffle 3, causing the dust baffle 3 to rotate via the sleeve rod 43, which in turn drives the rotating component 42 to rotate under the constraint of the rotating shaft 41. The dust baffle 3 opens and dissipates heat through the heat dissipation holes 2. At the same time, the sleeve rod 43 drives the gear belt 53 to rotate via the gear 52, which in turn drives other gears 52 to rotate synchronously. The other gears 52 drive the other dust baffles 3 connected below them to rotate, allowing all the dust baffles 3 to open quickly. When the temperature of the busbar trunking body 1 is detected to be high, all the dust baffles 3 are opened in time to dissipate heat, and the dust baffles 3 are quickly closed after the temperature drops, reducing the time for air to enter the interior of the busbar trunking body 1 through the heat dissipation holes 2 and improving the safety of the device.

[0019] To improve the stability of gear 52, a rectangular slot is provided on the top surface of sleeve rod 43, and a protrusion that meshes with the slot is integrally formed on the inner wall surface of gear 52. With this design, after gear 52 is sleeved on the surface of sleeve rod 43, the protrusion on the inner wall can be inserted into the slot at the top of sleeve rod 43, thereby preventing gear 52 from spinning freely on the surface of sleeve rod 43.

[0020] In order to control the dust baffle 3 without touching it, a rotating rod 54 is fixedly installed at the top of any set of sleeve rods 43, and the rotating rod 54 passes through the top of the inner wall of the mounting groove 51. With this design, the operator can control the rotation of the sleeve rod 43 by rotating the rotating rod 54, thereby achieving the purpose of opening and closing the dust baffle 3.

[0021] In other embodiments, a rotating groove 62 is provided around the outer wall surface of the rotating member 42, and an annular guide rail 61 is integrally formed on the inner wall surface of the rotating shaft 41. The guide rail 61 is embedded in the rotating groove 62. With this design, when the sleeve rod 43 drives the rotating member 42 to rotate inside the rotating shaft 41, the rotating member 42 can drive the rotating groove 62 to rotate under the restriction of the guide rail 61, thereby achieving the purpose of guiding and restricting the rotation of the rotating member 42.

[0022] To improve the smoothness of the rotation of the rotating component 42 within the rotating shaft 41, ball grooves 63 are equidistantly arranged around the top and bottom surfaces of the guide rail 61, and rolling balls 64 are embedded inside each ball groove 63. Annular guide grooves 65 are formed on the top and bottom surfaces of the inner wall of the rotating groove 62, allowing the balls 64 to roll against the inner wall of the guide groove 65. This design allows the rotating component 42 to drive the rotating groove 62 to rotate on the surface of the guide rail 61, while the balls 64 roll within the ball grooves 63 via the guide grooves 65. The guide groove 65 contacts the guide rail 61 through the ball grooves 63 and the balls 64, thereby reducing the contact area between the guide rail 61 and the rotating groove 62, and reducing the frictional force experienced by the rotating component 42 when driving the rotating groove 62 to rotate. This results in smoother rotation of the rotating component 42.

[0023] In other embodiments, in order to enable multiple sets of dust baffles 3 to open and close simultaneously, and to selectively open or close certain sets of dust baffles 3 according to actual conditions, a connecting mechanism is provided on the side of the sleeve rod 43 near the rotating ring 44. The connecting structure includes a split connecting rod 71 that is separately provided at the top of the sleeve rod 43, and the bottom surface of the split connecting rod 71 is in contact with the top surface of the sleeve rod 43. A telescopic rod 76 is provided inside the split connecting rod 71, and a collar 77 is fixedly installed at the bottom of the telescopic rod 76. Several sets of meshing blocks 78 are equidistantly arranged around the inner wall of the collar 77. The top of the sleeve rod 43 is provided with a slot 72, and a guide rod 73 is integrally formed in the middle of the inner wall of the slot 72. The outer wall surface of the guide rod 73 is provided with the same number of meshing grooves 75 as the meshing blocks 78. All meshing grooves 75 are set as L-shaped grooves and have a through top. All meshing blocks 78 can be inserted into the meshing grooves 75. The outer wall surface of the slot 72 is provided with an inverted L-shaped adjustment hole 79, and the outer wall surface of the collar 77 is fixedly installed with an adjustment rod 8. The adjustment rod 8 can drive the collar 77 to move and rotate under the restriction of the adjustment hole 79. The surface of the split connecting rod 71 is provided with a slot with the same width as the vertical part of the adjustment hole 79. When it is necessary to control the opening and closing of a single dust baffle 3, the adjusting rod 8 is rotated, causing it to rotate within the adjusting hole 79 and move out of the horizontal portion of the adjusting hole 79. The adjusting rod 8 drives the telescopic rod 76 to rotate via the collar 77. Simultaneously, during the rotation, the collar 77 drives the engaging block 78 to move from the horizontal portion of the engaging groove 75 to the vertical portion. Then, the adjusting rod 8 is pulled upwards, causing the adjusting rod 8, in cooperation with the telescopic rod 76, to drive the collar 77 to insert into the split connecting rod 71. The adjusting rod 8 then moves out of the vertical portion of the adjusting hole 79. The split connecting rod 71 is moved into the slot on its surface. The split connecting rod 71 is no longer connected to the guide rod 73 via the collar 77. The connection between the split connecting rod 71 and the sleeve rod 43 is disconnected. When the rotating rod 54 drives the split connecting rod 71 to rotate, the split connecting rod 71 spins freely and therefore cannot drive the sleeve rod 43 below to rotate and adjust the angle of the dust baffle 3. However, the dust baffles 3 connected to other split connecting rods 71 ​​and sleeve rods 43 can rotate and adjust normally, thereby achieving the purpose of individually controlling the opening and closing of individual dust baffles 3 and improving the convenience of the device.

[0024] In order to enable the collar 77 to retract into the split connecting rod 71 on its own, a spring 74 is wound around the surface of the guide rod 73. One end of the spring 74 is connected to the bottom of the inner wall of the split connecting rod 71, and the other end is attached to the bottom surface of the collar 77. With this design, when the collar 77 and the guide rod 73 are connected, the bottom end of the collar 77 is attached to the spring 74 and squeezes the spring 74 to produce elastic deformation. After the collar 77 is rotated to release the connection, the elastic deformation of the spring 74 is restored and pushes the collar 77 to rise and automatically retract into the split connecting rod 71.

[0025] In other embodiments, the surface of the adjusting rod 8 is provided with several sets of grooves at equal intervals. This design allows the fingers of the operator to sink into the grooves on the surface of the adjusting rod 8 when rotating it, increasing the contact area between the fingers and the adjusting rod 8, thereby increasing the friction generated when rotating the adjusting rod 8 and preventing slippage.

[0026] The specific steps for using a busbar trunking system with good heat dissipation are as follows: S1. By pulling the adjusting rod 8, the adjusting rod 8 drives the collar 77 to move under the restriction of the vertical slot hole opened on the surface of the split connecting rod 71. The collar 77 moves with the cooperation of the telescopic rod 76. The collar 77 moves out from the inside of the split connecting rod 71 and is inserted into the inside of the slot 72. The adjusting rod 8 is inserted into the vertical part of the adjusting hole 79. S2. During the movement of the collar 77 inserted into the slot 72, the engagement block 78 set on the inner wall is inserted into the vertical part of the engagement groove 75 through the top of the engagement groove 75. After the engagement block 78 touches the bottom, the adjusting rod 8 is rotated to rotate from the vertical part of the adjusting hole 79 to the horizontal part. At the same time, the adjusting rod 8 drives the collar 77 to rotate, so that the collar 77 drives the engagement block 78 to rotate into the horizontal part of the engagement groove 75. The guide rod 73 is connected to the collar 77. With the cooperation of the collar 77 and the adjusting rod 8, the sleeve rod 43 is connected to the split connecting rod 71. S3. Rotate the rotating rod 54 so that the rotating rod 54 drives the split connecting rod 71 to rotate. The split connecting rod 71 can drive the rotating part 42 to rotate under the restriction of the rotating shaft 41 through the sleeve rod 43. The rotating part 42 drives the rotating groove 62 to rotate under the restriction of the guide rail 61 and drives the ball 64 to be fixed inside the ball groove 63. S4. As the sleeve rod 43 rotates, the dust baffle 3 changes angle, so that the dust baffle 3 no longer completely covers the heat dissipation hole 2, so that the heat inside the bus trunking body 1 can be conducted through the air entering from the heat dissipation hole 2 and complete the heat dissipation. S5. During the rotation of the split connecting rod 71, the gear 52 is driven to rotate, so that the gear 52 can drive other gears 52 to rotate synchronously through the gear belt 53, so that other gears 52 can drive other dust baffles 3 to adjust their angles together. When a certain dust baffle 3 does not need to be opened, the connection between the split connecting rod 71 and the sleeve rod 43 can be released.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A busbar trunking system with good heat dissipation, comprising a busbar trunking body (1), heat dissipation holes (2), and a dust baffle plate (3), wherein a plurality of sets of heat dissipation holes (2) are equidistantly arranged on both sides of the outer wall of the busbar trunking body (1), characterized in that: The bottom of the inner wall of the heat dissipation hole (2) is integrally formed with a rotating shaft (41), and a rotating part (42) is rotatably arranged inside the rotating shaft (41). A sleeve rod (43) is fixedly installed at the top of the rotating part (42), and a dust baffle (3) is sleeved on the surface of the sleeve rod (43). The top end of the sleeve rod (43) is connected to other sleeve rods (43) through a transmission mechanism, and the transmission mechanism is located at the top end of the inner wall of the heat dissipation hole (2). The transmission mechanism includes an installation groove (51) integrally formed at the top end of the inner wall of the heat dissipation hole (2), and a rotating ring (44) of the same number as the heat dissipation hole (2) is rotatably provided at the bottom end of the inner wall of the installation groove (51). The sleeve rod (43) is provided through the middle of each rotating ring (44). A gear (52) is sleeved and installed at the top end of each set of sleeve rods (43), and a gear belt (53) is meshed on the surface of multiple sets of gears (52). A rectangular slot is opened on the top surface of the sleeve rod (43), and a convex part that meshes with the slot is integrally formed on the inner wall surface of the gear (52). The top of any one of the sleeve rods (43) is fixedly installed with a rotating rod (54), and the rotating rod (54) passes through the top of the inner wall of the mounting groove (51). The outer wall surface of the rotating part (42) is surrounded by a rotating groove (62). The inner wall surface of the rotating shaft (41) is integrally formed with an annular guide rail (61), and the guide rail (61) is embedded in the rotating groove (62). The top and bottom surfaces of the guide rail (61) are equidistantly surrounded by ball grooves (63), and the ball grooves (63) are all embedded with rolling balls (64). The top and bottom surfaces of the inner wall of the rotating groove (62) are all provided with an annular guide groove (65), and the balls (64) can all roll against the inner wall of the guide groove (65).

2. The busbar trunking with good heat dissipation effect according to claim 1, characterized in that: A connecting mechanism is provided on the side of the sleeve rod (43) near the rotating ring (44). The connecting structure includes a split connecting rod (71) that is split at the top of the sleeve rod (43), and the bottom surface of the split connecting rod (71) is in contact with the top surface of the sleeve rod (43). A telescopic rod (76) is provided inside the split connecting rod (71), and a collar (77) is fixedly installed at the bottom of the telescopic rod (76). Several sets of meshing blocks (78) are arranged equidistantly around the inner wall of the collar (77). The top of the sleeve rod (43) is provided with a slot (72), and a guide rod (73) is integrally formed in the middle of the inner wall of the slot (72). The outer wall surface of the guide rod (73) is provided with meshing grooves (75) of the same number as the meshing blocks (78) at equal intervals. All meshing grooves (75) are set as L-shaped grooves and the top is open. All meshing blocks (78) can be inserted into the meshing grooves (75). The slot (72) has an inverted L-shaped adjustment hole (79) on its outer wall surface. An adjustment rod (8) is fixedly installed on the outer wall surface of the collar (77). The adjustment rod (8) can drive the collar (77) to move and rotate under the restriction of the adjustment hole (79). The split connecting rod (71) has a slot with the same width as the vertical part of the adjustment hole (79) on its surface.

3. The busbar trunking with good heat dissipation effect according to claim 2, characterized in that: A spring (74) is wound around the surface of the guide rod (73). One end of the spring (74) is connected to the bottom of the inner wall of the split connecting rod (71), and the other end is attached to the bottom surface of the collar (77).

4. A busbar trunking system with good heat dissipation according to claim 3, characterized in that: The adjusting rod (8) has several sets of grooves equidistantly arranged around its surface.

5. The method of using a busbar trunking with good heat dissipation according to claim 4, characterized in that: S1. By pulling the adjusting rod (8), the adjusting rod (8) drives the collar (77) to move under the restriction of the vertical slot hole opened on the surface of the split connecting rod (71). The collar (77) moves with the cooperation of the telescopic rod (76). The collar (77) moves out from the inside of the split connecting rod (71) and is inserted into the slot (72). The adjusting rod (8) is inserted into the vertical part of the adjusting hole (79). S2. During the movement of the collar (77) inside the insertion slot (72), the engagement block (78) set on the inner wall is inserted into the vertical part of the engagement groove (75) through the top of the engagement groove (75). After the engagement block (78) touches the bottom, the adjusting rod (8) is rotated to make the adjusting rod (8) rotate from the vertical part of the adjusting hole (79) to the horizontal part. At the same time, the adjusting rod (8) drives the collar (77) to rotate, so that the collar (77) drives the engagement block (78) to rotate into the horizontal part of the engagement groove (75). The guide rod (73) is connected to the collar (77). With the cooperation of the collar (77) and the adjusting rod (8), the sleeve rod (43) is connected to the split connecting rod (71). S3. Rotate the rotating rod (54) to drive the split connecting rod (71) to rotate. The split connecting rod (71) can drive the rotating part (42) to rotate under the restriction of the rotating shaft (41) through the sleeve rod (43). The rotating part (42) drives the rotating groove (62) to rotate under the restriction of the guide rail (61) and drives the ball (64) to be fixed inside the ball groove (63). S4. As the sleeve rod (43) rotates, the dust baffle (3) changes angle, so that the dust baffle (3) no longer completely covers the heat dissipation hole (2), so that the heat inside the busbar trunking body (1) can be conducted through the air entering from the heat dissipation hole (2) and complete the heat dissipation. S5. During the rotation of the split connecting rod (71), the gear (52) is driven to rotate, so that the gear (52) can drive other gears (52) to rotate synchronously through the gear belt (53), so that other gears (52) can drive other dust baffles (3) to adjust their angles together. When a certain dust baffle (3) does not need to be opened, the connection between the split connecting rod (71) and the sleeve rod (43) can be released.

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