A fixing device

Abstract

This utility model discloses a fixing device for securing a busbar to a utility pole. It includes a first clamp, a first bracket, and an L-shaped bracket. The first clamp is fitted onto the utility pole. The first end of the first bracket is fixedly connected to the first clamp. The L-shaped bracket includes a horizontal part and a vertical part connected perpendicularly to each other. The horizontal part is slidably fitted onto the second end of the first bracket. The vertical part is connected to a PVC pipe clamp for holding and fixing the busbar. The first clamp, fitted onto the utility pole, provides a stable support foundation for the entire fixing device. The PVC pipe clamp connected to the vertical part of the L-shaped bracket for holding and fixing the busbar distributes the weight and swaying force of the busbar to the utility pole and the fixing device, rather than solely to the transformer terminals. This reduces the burden on the terminals, avoids loosening caused by prolonged excessive weight, and effectively prevents oil leakage caused by loose terminals.

Description

Technical Field

[0001] This utility model relates to the field of busbar fixing technology, and in particular to a fixing device. Background Technology

[0002] In power systems, transformers, as one of the core pieces of equipment, undertake the critical tasks of voltage transformation and power transmission and distribution. Their reliability and stability directly affect the safe and efficient operation of the entire power grid. Transformer terminals, as important components of the transformer's electrical connections, play a vital role in the normal operation of the transformer.

[0003] From the perspective of current product technology and manufacturing processes, oil leakage at transformer terminals due to product quality issues is extremely rare. According to statistics from numerous operating units, most transformer terminal oil leaks are caused by improper installation, with the low-voltage terminal side being a particularly high-risk area. In low-voltage wiring scenarios, due to the relatively large current, large-diameter copper core cables are typically used for connection. Generally, the diameter of the copper core cable used is over 120 square millimeters; for larger capacity transformers, even three large-diameter cables may be used simultaneously to meet current transmission requirements. However, in actual installation, the low-voltage busbar on the low-voltage terminal side often lacks effective fixing measures. This forces the transformer's low-voltage terminal not only to bear the significant weight of the copper core busbar itself but also to withstand the swaying caused by external factors such as wind. Over long-term operation, this continuous force causes the low-voltage terminal to gradually loosen. Once the terminal loosens, its sealing performance is severely affected, leading to oil leakage.

[0004] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fixing device that can solve the problem of oil leakage at transformer terminals caused by the lack of effective fixing measures for low-voltage busbars.

[0006] A fixing device according to an embodiment of the present invention is used to fix a busbar to a utility pole. It includes a first clamp, a first bracket, and an L-shaped bracket. The first clamp is sleeved on the utility pole. A first end of the first bracket is fixedly connected to the first clamp. The L-shaped bracket includes a horizontal portion and a vertical portion that are perpendicularly connected to each other. The horizontal portion is slidably sleeved on a second end of the first bracket. A PVC pipe clamp is connected to the vertical portion, and the PVC pipe clamp is used to clamp and fix the busbar.

[0007] A fixing device according to an embodiment of the present invention has at least the following beneficial effects: The fixing device consists of a first clamp, a first bracket, and an L-shaped bracket. The first clamp is fitted onto the utility pole, providing a stable support foundation for the entire fixing device. A PVC pipe clamp is connected to the vertical part of the L-shaped bracket. The PVC pipe clamp is used to clamp and fix the busbar. The weight and swaying force of the busbar are distributed to the utility pole and the fixing device, rather than being borne solely by the transformer terminal. This reduces the burden on the terminal, avoids loosening caused by long-term excessive weight, and effectively prevents oil leakage caused by loose terminal.

[0008] According to some embodiments of the present invention, the first bracket is provided with a plurality of spaced first through holes along its length direction, and the horizontal part is provided with a plurality of spaced second through holes along its length direction. Bolts selectively penetrate any of the aligned first through holes and any of the second through holes to adjust and lock the first bracket and the horizontal part.

[0009] According to some embodiments of the present invention, the vertical part is provided with a plurality of third through holes arranged along the height direction, and bolts selectively penetrate any of the aligned second through holes and any of the third through holes to lock the vertical part and the horizontal part.

[0010] According to some embodiments of the present invention, the PVC pipe clamp is provided with openings at both ends, and bolts pass through the openings and the third through hole to detachably fix the PVC pipe clamp to the vertical part.

[0011] According to some embodiments of the present invention, the fixing device further includes a second clamp and a reinforcing rib. The second clamp is located below the first clamp and is sleeved on the utility pole. The two ends of the reinforcing rib are respectively connected to the middle part of the first bracket and the second clamp to form a triangular support structure.

[0012] According to some embodiments of the present invention, both the first clamp and the second clamp include a first half-clamp and a second half-clamp. The first end of the first half-clamp is hinged to the first end of the second half-clamp. The second end of the first half-clamp is connected to a threaded rod. The threaded rod passes through the through hole of the second half-clamp. A nut is threadedly connected to the threaded rod so that the first clamp and the second clamp are clamped and fixed on the utility pole.

[0013] According to some embodiments of the present invention, the fixing device further includes a clamp and a second bracket. The clamp is sleeved on the utility pole, the first end of the second bracket is connected to the clamp, and the PVC pipe clamp is connected to the second bracket to clamp and fix the busbar.

[0014] According to some embodiments of this utility model, the clamp includes a first clamp arm and a second clamp arm. The first clamp arm has a first hole at each end, and the second clamp arm has a second hole at each end. The second bracket has a plurality of fourth through holes. A threaded rod passes through the first hole, the fourth through hole, and the second hole in sequence. A nut is threadedly connected to the threaded rod so that the clamp is fitted onto the utility pole and connected to the second bracket. The PVC pipe clamp has openings at both ends, and bolts pass through the openings and the fourth through holes to detachably fix the PVC pipe clamp to the second bracket.

[0015] According to some embodiments of this utility model, the PVC pipe clamp includes a fixing plate and a sliding rod. The fixing plate is detachably fixed to the first bracket or the vertical part by bolts. A fixing seat and a first clamp are connected to the fixing plate. A limiting hole is provided at the first end of the fixing seat. The sliding rod is slidably inserted into the limiting hole, and its end is fixedly connected to a second clamp. When the sliding rod makes a linear displacement along the axial direction of the limiting hole, it drives the second clamp to move towards or away from the opening of the first clamp, so as to seal or open the opening.

[0016] According to some embodiments of the present invention, the fixing device further includes a pressure rod and a connecting rod. The second end of the fixing seat is connected to a fixing shaft, which passes through the pressure rod. The two ends of the connecting rod are respectively hinged to the pressure rod and the sliding rod. When the pressure rod rotates around the fixing shaft, the connecting rod drives the sliding rod to move axially, thereby driving the second clamping piece to approach or move away from the opening of the first clamping piece, so as to realize the clamping or release of the busbar.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the fixing device according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the first or second clamp according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the clamp according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of a PVC pipe clamp according to an embodiment of the present invention.

[0023] Figure label:

[0024] 10. First clamp; 101. First half-clamp body; 102. Second half-clamp body; 11. Second clamp; 12. First bracket; 121. First through hole; 13. Horizontal part; 131. Second through hole; 14. Vertical part; 141. Third through hole; 15. Reinforcing rib; 16. Clamp; 161. First clamp arm; 162. Second clamp arm; 17. Second bracket; 171. Fourth through hole;

[0025] 20. Fixing plate; 21. Fixing base; 22. First clamping piece; 23. Sliding rod; 24. Second clamping piece; 25. Pressure rod; 26. Fixing shaft; 27. Connecting rod;

[0026] 30. Busbar; 31. Utility pole. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] Please refer to Figures 1-4 According to an embodiment of the present invention, a fixing device is used to fix a busbar 30 to a utility pole 31. The device includes a first clamp 10, a first bracket 12, and an L-shaped bracket. The first clamp 10 is sleeved on the utility pole 31. The first end of the first bracket 12 is fixedly connected to the first clamp 10. The L-shaped bracket includes a horizontal part 13 and a vertical part 14 that are perpendicularly connected to each other. The horizontal part 13 is slidably sleeved on the second end of the first bracket 12. The vertical part 14 is connected to a PVC pipe clamp, which is used to clamp and fix the busbar 30.

[0032] The fixing device consists of a first clamp 10, a first bracket 12, and an L-shaped bracket. The first clamp 10 is fitted onto the utility pole 31, providing a stable support foundation for the entire fixing device. The vertical part 14 of the L-shaped bracket is connected to a PVC pipe clamp, which is used to clamp and fix the busbar 30. The weight and swaying force of the busbar 30 are distributed to the utility pole 31 and the fixing device, rather than being borne solely by the transformer terminal. This reduces the burden on the terminal, avoids loosening caused by prolonged excessive weight, and effectively prevents oil leakage caused by loose terminal.

[0033] According to some embodiments of the present invention, the first bracket 12 is provided with a plurality of spaced first through holes 121 along its length direction, and the horizontal part 13 is provided with a plurality of spaced second through holes 131 along its length direction. Bolts selectively pass through any of the aligned first through holes 121 and any of the second through holes 131 to adjust and lock the first bracket 12 and the horizontal part 13.

[0034] First, the first clamp 10 is fitted onto and secured to the utility pole 31, at which point the first bracket 12 is stably connected to the utility pole 31. The horizontal part 13 is fitted onto the second end of the first bracket 12. Since the first bracket 12 has multiple spaced first through holes 121 along its length, and the horizontal part 13 has multiple spaced second through holes 131 along its length, appropriate first through holes 121 and second through holes 131 are aligned according to actual installation requirements (such as the installation position of the busbar 30, the relative distance to the transformer terminal, etc.). Then, bolts are used to pass through the aligned through holes, locking the first bracket 12 and the horizontal part 13 in the adjusted position. This process allows for flexible adjustment of the position of the horizontal part 13 on the first bracket 12 to adapt to different installation scenarios.

[0035] According to some embodiments of the present invention, the vertical part 14 is provided with a plurality of third through holes 141 arranged along the height direction, and the bolt selectively passes through any of the aligned second through holes 131 and any of the third through holes 141 to lock the vertical part 14 and the horizontal part 13.

[0036] The vertical part 14 is provided with multiple third through holes 141 arranged along the height direction. After the horizontal part 13 is adjusted to the correct position, appropriate second through holes 131 and third through holes 141 are selected and aligned according to the height requirements of the busbar 30. Bolts are then inserted through the aligned through holes to lock the vertical part 14 and the horizontal part 13. In this way, the position of the vertical part 14 can be precisely adjusted according to the actual height of the busbar 30, ensuring that the PVC pipe clamp can accurately clamp the busbar 30.

[0037] According to some embodiments of the present invention, the PVC pipe clamp is provided with openings at both ends, and bolts pass through the openings and the third through hole 141 to detachably fix the PVC pipe clamp to the vertical part 14.

[0038] Place the PVC pipe clamp in a suitable position on the vertical part 14, ensuring that the openings at both ends of the PVC pipe clamp are accurately aligned with the corresponding third through holes 141 on the vertical part 14. Insert the bolt sequentially through the opening at one end of the PVC pipe clamp and the aligned third through hole 141 on the vertical part 14, then pass it out from the other end. Next, install a nut at the bolt's exit end and tighten it using a tool to ensure a tight connection between the PVC pipe clamp and the vertical part 14, effectively clamping and fixing the busbar 30.

[0039] According to some embodiments of the present invention, the fixing device further includes a second clamp 11 and a reinforcing rib 15. The second clamp 11 is located below the first clamp 10 and is sleeved on the utility pole 31. The two ends of the reinforcing rib 15 are respectively connected to the middle part of the first bracket 12 and the second clamp 11 to form a triangular support structure.

[0040] The installer first places the first clamp 10 onto the utility pole 31 at a suitable height and tightens it using matching fasteners (such as bolts and nuts), initially fixing the first clamp 10 to the pole 31. At this point, the first end of the first bracket 12 is fixedly connected to the first clamp 10. Next, the second clamp 11 is placed on the utility pole 31, positioned below the first clamp 10. Based on the actual installation and design requirements, the position of the second clamp 11 on the utility pole 31 is adjusted to ensure it provides a suitable support point for the subsequent connection of the reinforcing rib 15. After adjustment, the second clamp 11 is firmly fixed to the utility pole 31 using fasteners. The two ends of the reinforcing rib 15 are then connected to the middle of the first bracket 12 and the second clamp 11, respectively. During the connection process, it is crucial to ensure a firm and reliable connection between the reinforcing rib 15, the middle of the first bracket 12, and the second clamp 11, which can be achieved through welding, bolting, or other methods. After the connection is complete, a triangular support structure is formed between the reinforcing rib 15, the first bracket 12, and the utility pole 31. The triangular support structure can effectively distribute the load, reduce structural deformation and swaying, and make the entire fixing device more firmly fixed to the utility pole 31.

[0041] According to some embodiments of the present invention, the first clamp 10 and the second clamp 11 both include a first half clamp 101 and a second half clamp 102. The first end of the first half clamp 101 is hinged to the first end of the second half clamp 102. The second end of the first half clamp 101 is connected to a threaded rod. The threaded rod passes through the through hole of the second half clamp 102. A nut is threadedly connected to the threaded rod so that the first clamp 10 and the second clamp 11 are clamped and fixed on the utility pole 31.

[0042] When installing the first clamp 10 and the second clamp 11, open the first half-clamp 101 and the second half-clamp 102 around the hinge, so that the first clamp 10 and the second clamp 11 are in an unfolded state, ready to be fitted onto the utility pole 31. Close the first half-clamp 101 and the second half-clamp 102 around the hinge, so that they surround the utility pole 31. At this time, the threaded rod connected to the second end of the first half-clamp 101 will pass through the through hole in the second half-clamp 102. Use a nut to thread the threaded rod, and by rotating the nut, the nut will gradually move on the threaded rod, thereby tightly clamping the first half-clamp 101 and the second half-clamp 102 onto the utility pole 31. The installer can adjust the tightness of the nut according to actual needs to ensure that there is sufficient clamping force between the first clamp 10 and the second clamp 11 and the utility pole 31 to achieve stable fixation.

[0043] According to some embodiments of the present invention, the fixing device further includes a clamp 16 and a second bracket 17. The clamp 16 is sleeved on the utility pole 31, and the first end of the second bracket 17 is connected to the clamp 16. A PVC pipe clamp is connected to the second bracket 17 to clamp and fix the busbar 30.

[0044] According to some embodiments of the present invention, the clamp 16 includes a first clamp arm 161 and a second clamp arm 162. The first clamp arm 161 has a first hole at both ends, and the second clamp arm 162 has a second hole at both ends. The second bracket 17 has a plurality of fourth through holes 171. A threaded rod passes through the first hole, the fourth through hole 171 and the second hole in sequence. A nut is threaded to the threaded rod so that the clamp 16 is fitted onto the utility pole 31 and connected to the second bracket 17. The PVC pipe clamp has openings at both ends. Bolts pass through the openings and the fourth through holes 171 to detachably fix the PVC pipe clamp to the second bracket 17.

[0045] The installer first positions the first clamp arm 161 and the second clamp arm 162 around the utility pole 31 at a suitable height. Based on the diameter of the utility pole 31, the relative positions of the first clamp arm 161 and the second clamp arm 162 are roughly adjusted to ensure they fit snugly against the surface of the pole 31, preparing for subsequent fixing. The second bracket 17 is then placed between the first clamp arm 161 and the second clamp arm 162 at a suitable position, aligning the fourth through hole 171 on the second bracket 17 with the first holes at both ends of the first clamp arm 161 and the second holes at both ends of the second clamp arm 162. The threaded rod is then inserted through the first hole, the fourth through hole 171, and the second hole in sequence, ensuring the threaded rod can pass smoothly through each hole. A nut is installed at the end of the threaded rod that exits the second hole, and the nut is tightened using a tool. As the nut is tightened, the first clamp arm 161 and the second clamp arm 162 gradually move closer together, tightly clamping the utility pole 31. Simultaneously, the second bracket 17 is also securely connected to the clamp 16, forming a stable fixing structure. Place the PVC pipe clamp in a suitable position on the second bracket 17, aligning the openings at both ends of the PVC pipe clamp with the fourth through hole 171 on the second bracket 17. Insert bolts through the openings and the fourth through hole 171, and install nuts at the protruding ends of the bolts. Tighten the nuts to detachably fix the PVC pipe clamp to the second bracket 17. Then, effectively clamp and fix the busbar 30 to the utility pole 31 using the PVC pipe clamp.

[0046] According to some embodiments of the present invention, the PVC pipe clamp includes a fixing plate 20 and a sliding rod 23. The fixing plate 20 is detachably fixed to the first bracket 12 or the vertical part 14 by bolts. A fixing seat 21 and a first clamp 22 are connected to the fixing plate 20. The first end of the fixing seat 21 is provided with a limiting hole. The sliding rod 23 is slidably inserted into the limiting hole, and its end is fixedly connected to the second clamp 24. When the sliding rod 23 makes a linear displacement along the axial direction of the limiting hole, it drives the second clamp 24 to move towards or away from the opening of the first clamp 22, so as to seal or open the opening.

[0047] According to some embodiments of the present invention, the fixing device further includes a pressure rod 25 and a connecting rod 27. The second end of the fixing base 21 is connected to a fixing shaft 26, which passes through the pressure rod 25. The two ends of the connecting rod 27 are respectively hinged to the pressure rod 25 and the sliding rod 23. When the pressure rod 25 rotates around the fixing shaft 26, the sliding rod 23 is driven to move axially through the connecting rod 27, thereby driving the second clamping piece 24 to approach or move away from the opening of the first clamping piece 22, so as to realize the clamping or release of the busbar 30.

[0048] The fixing device is initially in an unclamped state for the busbar 30. At this time, the opening of the PVC pipe clamp is open, and the second clamp 24 is away from the first clamp 22. The operator places the busbar 30 to be fixed on the first clamp 22 of the PVC pipe clamp. Since the opening is open, the busbar 30 can smoothly enter the space between the first clamp 22 and the second clamp 24. The operator manually or with the help of a tool presses down on the pressure rod 25, causing the pressure rod 25 to rotate around the fixed axis 26. Since the two ends of the connecting rod 27 are hinged to the pressure rod 25 and the sliding rod 23 respectively, when the pressure rod 25 rotates, the connecting rod 27 will undergo a corresponding angle change, driving the sliding rod 23 to make a linear displacement along the axial direction of the limiting hole. The linear displacement of the sliding rod 23 will push the second clamp 24, which is fixedly connected to its end, to move towards the opening of the first clamp 22. As the second clamp 24 moves, the busbar 30 is finally tightly clamped between the first clamp 22 and the second clamp 24, thus fixing the busbar 30. When it is necessary to release the busbar 30, the operator lifts the pressure rod 25 upwards, causing the pressure rod 25 to rotate in the opposite direction around the fixed shaft 26. Similarly, the connecting rod 27 will drive the sliding rod 23 to move in the opposite direction along the axial direction of the limiting hole, pushing the second clamping piece 24 to move away from the opening of the first clamping piece 22. As the second clamping piece 24 moves, the opening opens, and the busbar 30 can be smoothly removed from the PVC pipe clamping piece.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fixing device for fixing a busbar to a utility pole, characterized in that, include: The first clamp is fitted onto the utility pole; The first bracket has its first end fixedly connected to the first clamp. The L-shaped bracket includes a horizontal part and a vertical part that are perpendicularly connected to each other. The horizontal part is slidably sleeved on the second end of the first bracket. The vertical part is connected to a PVC pipe clamp, which is used to clamp and fix the busbar.

2. The fixing device according to claim 1, characterized in that: The first bracket has a plurality of spaced first through holes along its length, and the horizontal part has a plurality of spaced second through holes along its length. Bolts selectively pass through any of the aligned first through holes and any of the second through holes to adjust and lock the first bracket and the horizontal part.

3. The fixing device according to claim 2, characterized in that: The vertical section is provided with a plurality of third through holes arranged along the height direction. Bolts selectively penetrate any of the aligned second through holes and any of the third through holes to lock the vertical section and the horizontal section.

4. The fixing device according to claim 3, characterized in that: The PVC pipe clamp has openings at both ends, and bolts pass through the openings and the third through hole to detachably fix the PVC pipe clamp to the vertical part.

5. The fixing device according to claim 1, characterized in that: It also includes a second clamp and a reinforcing rib. The second clamp is located below the first clamp and is fitted onto the utility pole. The two ends of the reinforcing rib are respectively connected to the middle of the first bracket and the second clamp to form a triangular support structure.

6. The fixing device according to claim 5, characterized in that: Both the first clamp and the second clamp include a first half-clamp body and a second half-clamp body. The first end of the first half-clamp body is hinged to the first end of the second half-clamp body. The second end of the first half-clamp body is connected to a threaded rod. The threaded rod passes through the through hole of the second half-clamp body. A nut is threadedly connected to the threaded rod so that the first clamp and the second clamp are clamped and fixed on the utility pole.

7. The fixing device according to claim 1, characterized in that: It also includes a clamp and a second bracket. The clamp is fitted onto the utility pole, and the first end of the second bracket is connected to the clamp. The second bracket is connected to the PVC pipe clamp to hold and fix the busbar.

8. The fixing device according to claim 7, characterized in that: The clamp includes a first clamp arm and a second clamp arm. The first clamp arm has a first hole at each end, and the second clamp arm has a second hole at each end. The second bracket has several fourth through holes. A threaded rod passes through the first hole, the fourth through hole, and the second hole in sequence. A nut is threaded to the threaded rod so that the clamp is fitted onto the utility pole and connected to the second bracket. The PVC pipe clamp has openings at both ends. Bolts pass through the openings and the fourth through holes to detachably fix the PVC pipe clamp to the second bracket.

9. The fixing device according to claim 7, characterized in that: The PVC pipe clamp includes a fixing plate and a sliding rod. The fixing plate is detachably fixed to the first bracket or the vertical part by bolts. A fixing seat and a first clamp are connected to the fixing plate. A limiting hole is provided at the first end of the fixing seat. The sliding rod is slidably inserted into the limiting hole, and a second clamp is fixedly connected to its end. When the sliding rod makes a linear displacement along the axial direction of the limiting hole, it drives the second clamp to move towards or away from the opening of the first clamp, so as to seal or open the opening.

10. The fixing device according to claim 9, characterized in that: It also includes a pressure rod and a connecting rod. The second end of the fixed base is connected to a fixed shaft, which passes through the pressure rod. The two ends of the connecting rod are respectively hinged to the pressure rod and the slide rod. When the pressure rod rotates around the fixed shaft, it drives the slide rod to move axially through the connecting rod, thereby driving the second clamping piece to approach or move away from the opening of the first clamping piece, so as to realize the clamping or release of the busbar.

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