Harmonic detection modular extension bracket

Abstract

This utility model relates to the field of power detection technology, specifically a modular expansion bracket for harmonic detection, designed to solve the problems of unstable fixation, inconvenient angle adjustment, and poor expandability of traditional brackets. The bracket includes a support frame and a rotating plate. The rotating plate is hinged to the support frame via a rotating seat, enabling pitch angle adjustment. A limiting frame is provided on the rotating plate, and a mounting bracket slides between the limiting frames. A flexible fixing box is fixed at the top to hold the equipment. When the mounting bracket slides, an inclined plane drives the rotating frame, causing a second abutment rod to clamp the fixing box, achieving double fixation of the equipment. The fixing box can be designed as a cuboid, cylindrical, or irregularly shaped adaptable structure to accommodate different equipment shapes. Angle locking is achieved by pressing a fixing screw with a rubber gasket against the side wall of the support frame. The expansion mounting plate is bolted to the bottom of the rotating plate, providing additional equipment interfaces. This bracket improves equipment stability, simplifies angle adjustment, and supports modular expansion for multiple devices.

Description

Technical Field

[0001] This utility model relates to the field of power detection technology, and in particular to a modular extension bracket for harmonic detection. Background Technology

[0002] Harmonic detection equipment is used in power systems to monitor power quality, and its support structure needs to accommodate different equipment sizes and detection angles. Existing supports mostly use bolts or clips to fix the equipment, resulting in insufficient stability and potential deviations in detection data. Angle adjustment typically relies on manual disassembly of components, a cumbersome process that is difficult to control precisely. When auxiliary equipment needs to be added, traditional supports lack expansion interfaces, making it impossible to flexibly adapt to multiple devices working together. These limitations affect detection efficiency and applicable scenarios.

[0003] To address the aforementioned issues, this utility model proposes a modular extension bracket for harmonic detection. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing harmonic detection brackets, such as simple structure, limited functionality, inconvenient angle adjustment, poor modular expandability, and difficulty in meeting diverse detection needs. Therefore, this invention proposes a modular expansion bracket for harmonic detection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A modular extension bracket for harmonic detection, comprising: A support frame and a rotating plate, wherein the rotating plate is rotatably connected to the support frame to achieve angle adjustment at one end of the rotating plate; Two limiting brackets are fixedly installed on the top of the rotating plate; The mounting bracket is slidably mounted between the two limiting brackets; A mounting box, which is fixedly installed on the top of the mounting frame, is used to place and engage the harmonic detection equipment. The mounting box is made of elastic material. The fixing assembly includes two rotating frames and two second abutting rods, wherein the rotating frames are rotatably disposed within the limiting frame, and the second abutting rods are fixedly connected to the top end of the rotating frames; When the mounting bracket slides between the limiting brackets, the inclined surface of the mounting bracket abuts against the first abutting rod, driving the rotating bracket to rotate, causing the two second abutting rods to move closer to each other, clamping and fixing the fixing box, thereby causing the side wall of the fixing box to elastically contract to stabilize the clamping device.

[0006] In one possible design, a rotating seat is fixedly installed at the bottom of the rotating plate, and the rotating seat is located near one end of the rotating plate; rotating blocks are fixedly installed at both ends of the rotating seat, and the two rotating blocks are rotatably connected to the inner walls of the two sides of the support frame respectively; two fixing screws pass through both sides of the support frame, one end of each fixing screw is threaded through the adjacent rotating block, and one side is in close contact with the side wall of the support frame to lock the angle of the rotating plate.

[0007] In one possible design, the outer walls of both fixing screws are fitted with rubber gaskets, which are pressed between the fixing screws and the side walls of the support frame to increase friction.

[0008] In one possible design, the fixing assembly further includes two clearance slots, each formed on the top of one of the two limiting frames; the rotating frame is rotatably mounted on the top of the limiting frame via a bracket, and its bottom end extends into the limiting frame through the clearance slots; the first abutment rod is fixedly mounted on the two bottom ends of the rotating frame.

[0009] In one possible design, the mounting bracket consists of a support plate and two limiting protrusions, which are respectively fixedly connected to both sides of the support plate; each of the two limiting protrusions slides against the inner wall of the corresponding limiting bracket, and the side furthest from each other is provided with an inclined surface, which cooperates with the first abutment rod.

[0010] In one possible design, multiple positioning holes are provided on one side of each of the two limiting protrusions; multiple positioning screws are threaded through one side of each of the two limiting brackets, with one end of each positioning screw extending into the corresponding positioning hole to lock the mounting bracket.

[0011] In one possible design, a mounting plate is also included, which is fixedly mounted to the bottom of the rotating plate; It also includes an extension mounting plate, which is bolted to the mounting plate, and the extension mounting plate has multiple mounting holes for mounting additional brackets.

[0012] In one possible design, a groove is provided on one side of the support frame to facilitate lifting the rotating plate or the lifting device.

[0013] In one possible design, a support plate is also included, which is fixedly mounted on the top of the rotating plate and located at the end of the rotating plate away from the limiting frame, for supporting the item to be placed when the rotating plate is raised.

[0014] In this application, the harmonic detection equipment to be used is first placed inside the mounting box. The mounting box itself is designed to accommodate and initially engage the equipment. Subsequently, the mounting bracket is slid along the groove between the two limiting brackets. The mounting bracket consists of a support plate and limiting protrusions on both sides. The limiting protrusions slide on the inner wall of the limiting bracket, causing the support plate and the mounting box on top to move, thereby initially positioning the equipment in the desired position.

[0015] During installation, ensure that the beveled end of the sliding mounting bracket enters the limiting bracket first. As the sliding mounting bracket moves forward, the beveled side of the limiting protrusion will contact and abut against the first abutment rod located inside the limiting bracket. At this time, the two first abutment rods move away from each other. Since the first abutment rods are fixedly connected to the bottom of the rotating bracket, and the rotating bracket is rotatably mounted on the top of the limiting bracket via a support, the moving away of the two first abutment rods will drive the rotating bracket to rotate around its fulcrum, thereby achieving the synchronous approach of the two second abutment rods.

[0016] At this point, the two second abutment rods can apply a clamping force from both sides to the fixing box located between them. This clamping force, on the one hand, further positions and locks the fixing box itself on the mounting bracket, preventing it from shaking; on the other hand, this clamping force is transmitted to the fixing box, causing the side walls of the fixing box to undergo controlled elastic compression and contraction. This contraction significantly enhances the enclosure and clamping force of the fixing box on the harmonic detection equipment placed inside, achieving stable clamping of the equipment and effectively preventing the equipment from loosening or shifting during the detection process.

[0017] Once the installation position of the equipment is determined and the clamping force is adjusted appropriately, the end of the positioning screw can be inserted into the positioning hole on the side of the limiting protrusion by screwing in the positioning screw, thereby firmly locking the mounting bracket, the fixing box and the equipment in this position and preventing them from sliding accidentally.

[0018] When the pitch angle of the harmonic detection equipment needs to be adjusted, the operator can manually raise or lower one end of the rotating plate. The rotating plate is rotatably connected to the inner walls of the support frame on both sides through the rotating seat at its bottom and the rotating blocks at both ends, allowing for smooth angle adjustment.

[0019] After adjusting to the desired angle, tighten the fixing screws on both sides of the support frame. The threads at the ends of the fixing screws pass through the adjacent rotating blocks, and when tightened, one side of the screw is pressed tightly against the side wall of the support frame. The rubber gaskets fitted on the outer wall of the screws are compressed during tightening, producing elastic deformation, which significantly increases the friction between the fixing screws and the side wall of the support frame. This friction effectively prevents the rotating blocks, and thus prevents the rotating plate from rotating relative to the support frame, achieving reliable locking of the rotating plate angle and ensuring that the equipment maintains a stable tilt angle during testing. The groove on one side of the support frame allows the operator to insert their fingers to apply force to lift the rotating plate or pull the entire support.

[0020] If additional auxiliary supports or equipment are required, users can install two mounting brackets between the two limit brackets. The two mounting brackets are inserted between the two limit brackets at both ends and secured using the method described above, facilitating the fixing of multiple sets of equipment. Additionally, an extension mounting plate can be fixed to the mounting plate, which is fixed to the bottom of the rotating plate, using bolts or other fasteners. The extension mounting plate has multiple mounting holes, providing flexible mounting interfaces for additional supports or accessories, further enabling modular expansion of the support's functionality.

[0021] Beneficial effects: In this utility model, the modular expansion bracket for harmonic detection initially engages and fixes the harmonic detection equipment using a fixing box, and then further clamps, fixes, and compresses the fixing box using the rotating frame and the second abutment rod in the fixing assembly, achieving dual fixation of the equipment. This fixing method not only improves the stability of the equipment during the detection process, but also significantly enhances the enclosure and clamping force of the fixing box on the equipment, effectively preventing the equipment from loosening or shifting during the detection process. In this utility model, the modular extension bracket for harmonic detection features a compact and reasonable structural design with seamless coordination between its components. The mounting bracket is slidably connected to the limiting frame via a limiting protrusion, ensuring not only the stability of the mounting bracket but also facilitating the installation and disassembly of the equipment. Furthermore, the design of the positioning screws and positioning holes further secures the mounting bracket, preventing accidental slippage of the equipment during the testing process. In this invention, a modular extension bracket for harmonic detection employs a rotatable connection between the rotating plate and the support frame, allowing the operator to manually raise or lower one end of the rotating plate to adjust the device's pitch angle. After adjusting to the desired angle, tightening the fixing screws utilizes rubber washers to increase the friction between the fixing screws and the side wall of the support frame, reliably locking the rotating plate angle. This angle adjustment mechanism is not only convenient to operate but also highly accurate, meeting the angle requirements of various detection scenarios. In this utility model, a modular expansion bracket for harmonic detection allows for the fixation of two mounting brackets between two limiting brackets. The design, along with the mounting plate and expansion mounting plate, provides a flexible installation interface for additional brackets or accessories. Users can choose to install one or two mounting brackets according to their actual needs. Furthermore, an expansion mounting plate can be installed at the bottom of the rotating plate using bolts or other fasteners, further increasing the modular expansion capability of the bracket. This allows users to install multiple auxiliary devices or expand other functions on the same bracket. In this invention, the modular expansion bracket for harmonic detection significantly improves equipment stability through a dual fixing mechanism, effectively preventing the detection equipment from loosening or shifting. Its compact and reasonable structural design ensures stable sliding of the mounting bracket and facilitates easy assembly and disassembly. The rotating connection design allows for convenient and precise angle adjustment, meeting diverse detection needs. The dual mounting bracket fixing and expansion mounting plate design gives the bracket a highly modular expansion capability, allowing users to flexibly configure and install multiple auxiliary devices or expand functionality, greatly enhancing the bracket's practicality and adaptability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a modular extended bracket for harmonic detection proposed in this utility model; Figure 2 This is a schematic diagram of the rotating plate of a modular extension bracket for harmonic detection proposed in this utility model in the lifted state. Figure 3 This is a schematic diagram of the rotating plate and support frame of a modular extension bracket for harmonic detection proposed in this utility model in a separated state. Figure 4 This is a schematic diagram of the mounting bracket and limiting bracket structure of a modular extension bracket for harmonic detection proposed in this utility model; Figure 5 This is a cross-sectional view of the fixing component of a modular extension bracket for harmonic detection proposed in this utility model. Figure 6 This is a schematic diagram of the installation state of the expansion mounting plate of the modular expansion bracket for harmonic detection proposed in this utility model.

[0023] In the diagram: 1. Support frame; 2. Rotating plate; 3. Limiting frame; 4. Mounting frame; 5. Fixing box; 6. Support plate; 7. Rotating seat; 8. Rotating block; 9. Fixing screw; 10. Mounting plate; 11. Groove; 12. Bearing plate; 13. Limiting protrusion; 14. Inclined surface; 15. Positioning hole; 16. Relief groove; 17. Rotating frame; 18. First abutment rod; 19. Second abutment rod; 20. Positioning screw; 21. Extended mounting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figure 1-6 An extension bracket includes: a support frame 1, a rotating plate 2, a limiting frame 3, a mounting frame 4, a fixing box 5, a mounting plate 10, and fixing components.

[0026] In this embodiment, the support frame 1 serves as the supporting foundation for the entire bracket, and its structure is stable. The rotating plate 2 is connected to the support frame 1 through a specific rotating connection method. Specifically, a rotating seat 7 is fixedly installed at the bottom of the rotating plate 2, and the rotating seat 7 is located near one end of the rotating plate 2. Rotating blocks 8 are fixedly installed at both ends of the rotating seat 7. These two rotating blocks 8 are rotatably connected to the inner walls of both sides of the support frame 1, thereby enabling the rotating plate 2 to rotate around the support frame 1 at a certain angle, so as to realize the lifting and lowering operation of one end of the rotating plate 2.

[0027] Meanwhile, in order to lock the rotating plate 2 after it has rotated to a suitable angle, in this embodiment, two fixing screws 9 are inserted through both sides of the support frame 1. One end of each fixing screw 9 is threaded through the adjacent rotating block 8. One side of the fixing screw 9 is close to one side of the support frame 1. By tightening the fixing screw 9, it is made to fit tightly with the support frame 1, and the rotation locking of the rotating plate 2 is completed by friction.

[0028] In this embodiment, two limiting frames 3 are fixedly installed on the top of the rotating plate 2, and these two limiting frames 3 are arranged parallel to each other. A mounting frame 4 is slidably installed between the two limiting frames 3. The mounting frame 4 consists of a support plate 12 and two limiting protrusions 13, which are fixedly connected to both sides of the support plate 12. The mounting frame 4 is located between the two limiting frames 3 and is slidably connected to the two limiting frames 3 through corresponding sliding grooves. Specifically, both limiting protrusions 13 slide in cooperation with the inner walls of their respective limiting frames 3. To facilitate the sliding operation of the mounting frame 4 within the limiting frames 3, inclined surfaces 14 are provided on the opposite sides of the two limiting protrusions 13. The inclined surfaces 14 allow the mounting frame 4 to be better inserted into the two limiting frames 3 during installation.

[0029] In addition, in this embodiment, in order to further lock the position of the mounting bracket 4 within the limiting bracket 3, multiple positioning holes 15 are provided on one side of each of the two limiting protrusions 13, and multiple positioning screws 20 are threaded through one side of each of the two limiting brackets 3. One end of each of the multiple positioning screws 20 extends into the corresponding positioning hole 15. When the mounting bracket 4 slides to the appropriate position, the positioning screws 20 are tightened so that one end of them enters the positioning hole 15, thereby locking the mounting bracket 4.

[0030] In this embodiment, a fixing box 5 is fixedly installed on the top of the mounting frame 4. The fixing box 5 is used to place and lock the harmonic detection equipment to be used. After the fixing box 5 is initially placed, in order to further ensure the stability of the harmonic detection equipment in the fixing box 5, a fixing component is also provided in this embodiment. The fixing component includes two clearance slots 16 respectively opened on the top of the two limiting frames 3. The two rotating frames 17 are rotatably connected to the top of the limiting frame 3 through corresponding brackets. The two bottom ends of the two rotating frames 17 extend into the limiting frame 3 through the corresponding clearance slots 16. The two top ends of the rotating frames 17 are fixedly connected to the second abutment rod 19. The two bottom ends of the rotating frames 17 are fixedly installed with the same first abutment rod 18. When the mounting bracket 4 slides within the limiting bracket 3, the inclined surface 14 on the limiting protrusion 13 will cooperate with the first abutting rod 18. As the mounting bracket 4 continues to slide, the limiting protrusion 13 abuts against the first abutting rod 18, thereby driving the rotating bracket 17 to rotate, which in turn causes the two second abutting rods 19 to move closer to each other. The two second abutting rods 19 are used to squeeze the fixed box 5 located between them to achieve further positioning of the fixed box 5. At the same time, the fixed box 5 can also be squeezed and contracted, which can further enable the fixed box 5 to firmly clamp the harmonic detection equipment placed inside.

[0031] This application can be used in the field of power detection technology, or in other fields applicable to this application.

[0032] Example 2: Reference Figure 2 , 3 6. An improvement based on Example 1: a modular extension bracket for harmonic detection, which is applied to the field of power detection technology; In order to further increase the friction between the fixing screw 9 and the outer wall of the support frame 1 and improve the stability of locking, in this embodiment, the outer walls of the two fixing screws 9 are fitted with rubber gaskets, and the fixing screws 9 are pressed against and squeezed against one side of the support frame 1 through the rubber gaskets.

[0033] In this embodiment, a mounting plate 10 is fixedly installed at the bottom of the rotating plate 2. The mounting plate 10 is used for installing additional supports. Specifically, an extension mounting plate 21 is fixedly installed on one side of the rotating plate 2 by the mounting plate 10 and external bolts. The extension mounting plate 21 has multiple mounting holes inside, through which additional supports can be easily installed to meet the needs of different usage scenarios.

[0034] In this embodiment, a support plate 6 is fixedly installed on the top of the rotating plate 2, and the support plate 6 is located at the end of the rotating plate 2 away from the limiting frame 3. When the rotating plate 2 is raised, the support plate 6 can provide support for the placement of items, such as auxiliary tools related to harmonic detection.

[0035] In this embodiment, a groove 11 is provided on one side of the support frame 1. The groove 11 has a dual function. On the one hand, it facilitates the lifting operation of the rotating plate 2. The operator can insert his / her fingers into the groove 11 and lift the rotating plate 2 by applying an upward force. On the other hand, it also facilitates the lifting of the equipment, making it easier to transport and move the equipment.

[0036] The working principle and usage process of this technical solution are as follows: First, the harmonic detection equipment to be used is placed inside the mounting box 5. The mounting box 5 is designed to accommodate and initially engage the equipment. Then, the mounting bracket 4 is slid along the groove between the two limiting brackets 3. The mounting bracket 4 consists of a support plate 12 and limiting protrusions 13 on both sides. The limiting protrusions 13 slide on the inner wall of the limiting bracket 3, causing the support plate 12 and the mounting box 5 on top to move, thereby initially positioning the equipment in the desired position.

[0037] During installation, ensure that the end of the sliding mounting bracket 4 with the inclined surface 14 enters the limiting bracket 3 first. As the sliding mounting bracket 4 moves forward, the inclined surface 14 on the side of the limiting protrusion 13 will contact and abut against the first abutting rod 18 located inside the limiting bracket 3. At this time, the first abutting rods 18 on both sides move away from each other. Since the first abutting rods 18 are fixedly connected to the bottom end of the rotating bracket 17, and the rotating bracket 17 is rotatably mounted on the top of the limiting bracket 3 through a bracket, the moving away of the two first abutting rods 18 will drive the rotating bracket 17 to rotate around its fulcrum, thereby achieving the synchronous approach of the two second abutting rods 19.

[0038] At this point, the two second abutment rods 19 can apply a clamping force from both sides to the fixing box 5 located between them. This clamping force, on the one hand, further positions and locks the fixing box 5 itself on the mounting bracket 4, preventing it from shaking; on the other hand, this clamping force is transmitted to the fixing box 5, causing the side wall of the fixing box 5 to undergo controllable elastic compression and contraction. This contraction significantly enhances the enclosure and clamping force of the fixing box 5 on the harmonic detection equipment placed inside, achieving stable clamping of the equipment and effectively preventing the equipment from loosening or shifting during the detection process.

[0039] Once the installation position of the equipment is determined and the clamping force is adjusted appropriately, the end of the positioning screw 20 can be inserted into the positioning hole 15 on the side of the limiting protrusion 13 by screwing in the positioning screw 20, thereby firmly locking the mounting bracket 4 together with the fixing box 5 and the equipment in this position to prevent them from sliding accidentally.

[0040] When it is necessary to adjust the pitch angle of the harmonic detection equipment, the operator can manually raise or lower one end of the rotating plate 2. The rotating plate 2 is rotatably connected to the inner walls of both sides of the support frame 1 through the rotating seat 7 at its bottom and the rotating blocks 8 at both ends, so that the angle adjustment can be carried out smoothly.

[0041] After adjusting to the desired angle, tighten the fixing screws 9 on both sides of the support frame 1. The threads at the end of the fixing screws 9 pass through the adjacent rotating blocks 8, and when tightened, one side of the screw is in close contact with the side wall of the support frame 1. The rubber gaskets fitted on the outer wall of the screws are compressed during tightening, producing elastic deformation, thereby significantly increasing the friction between the fixing screws 9 and the side wall of the support frame 1. This friction effectively prevents the rotating blocks 8 from rotating, and thus prevents the rotating plate 2 from rotating relative to the support frame 1, achieving reliable locking of the angle of the rotating plate 2 and ensuring that the equipment maintains a stable tilt angle during testing. The groove 11 opened on one side of the support frame 1 allows the operator to insert their fingers to apply force to lift the rotating plate 2 or pull the entire support.

[0042] If additional auxiliary supports or equipment are required, the user can install two mounting brackets 4 between the two limiting brackets 3. The two mounting brackets 4 are installed between the two limiting brackets at both ends and fixed in the manner described above, which facilitates the fixing of multiple sets of equipment. At the same time, the extension mounting plate 21 can be fixed to the mounting plate 10 fixed to the bottom of the rotating plate 2 using bolts or other fasteners. The extension mounting plate 21 has multiple mounting holes, providing a flexible installation interface for additional supports or accessories, which can further realize the modular expansion of the support function.

[0043] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A modular extension bracket for harmonic detection, characterized in that, include: A support frame (1) and a rotating plate (2), wherein the rotating plate (2) is rotatably connected to the support frame (1) to achieve angle adjustment at one end of the rotating plate (2); Two limiting brackets (3) are fixedly installed on the top of the rotating plate (2); Mounting bracket (4) is slidably mounted between the two limiting brackets (3); A fixing box (5) is fixedly installed on the top of the mounting frame (4) for placing and engaging the harmonic detection equipment. The fixing box (5) is made of elastic material. The fixing assembly includes two rotating frames (17) and two second abutting rods (19), wherein the rotating frames (17) are rotatably disposed within the limiting frame (3), and the second abutting rods (19) are fixedly connected to the top of the rotating frames (17); When the mounting bracket (4) slides between the limiting bracket (3), the inclined surface (14) of the mounting bracket (4) abuts against the first abutting rod (18), driving the rotating bracket (17) to rotate, so that the two second abutting rods (19) move closer to each other, clamping and fixing the fixing box (5), thereby causing the side wall of the fixing box (5) to elastically contract to stabilize the clamping device.

2. The modular extension bracket for harmonic detection according to claim 1, characterized in that, A rotating seat (7) is fixedly installed at the bottom of the rotating plate (2). The rotating seat (7) is located near one end of the rotating plate (2). Rotating blocks (8) are fixedly installed at both ends of the rotating seat (7). The two rotating blocks (8) are rotatably connected to the inner walls of the two sides of the support frame (1). Two fixing screws (9) pass through both sides of the support frame (1). One end of each fixing screw (9) is threaded through the adjacent rotating block (8), and one side is close to the side wall of the support frame (1) to lock the angle of the rotating plate (2).

3. The modular extension bracket for harmonic detection according to claim 2, characterized in that, Both fixing screws (9) are fitted with rubber gaskets on their outer walls. The rubber gaskets are pressed between the fixing screws (9) and the side wall of the support frame (1) to increase friction.

4. The modular extension bracket for harmonic detection according to claim 1, characterized in that, The fixing component also includes two clearance slots (16), which are respectively opened on the top of the two limiting frames (3); the rotating frame (17) is rotatably installed on the top of the limiting frame (3) by a bracket, and the bottom end extends into the limiting frame (3) through the clearance slots (16); the first abutting rod (18) is fixedly installed on the two bottom ends of the rotating frame (17).

5. The modular extension bracket for harmonic detection according to claim 1, characterized in that, The mounting bracket (4) consists of a bearing plate (12) and two limiting protrusions (13). The two limiting protrusions (13) are fixedly connected to both sides of the bearing plate (12). The two limiting protrusions (13) slide with the inner wall of the corresponding limiting bracket (3), and the inclined surface (14) is provided on the side that is far away from each other. The inclined surface (14) cooperates with the first abutting rod (18).

6. The modular extension bracket for harmonic detection according to claim 5, characterized in that, Multiple positioning holes (15) are provided on one side of each of the two limiting protrusions (13); multiple positioning screws (20) are threaded through one side of each of the two limiting brackets (3), and one end of the positioning screw (20) extends into the corresponding positioning hole (15) to lock the mounting bracket (4).

7. The modular extension bracket for harmonic detection according to claim 1, characterized in that, It also includes a mounting plate (10), which is fixedly mounted on the bottom of the rotating plate (2); It also includes an extension mounting plate (21), which is fixedly mounted to the mounting plate (10) by bolts. The extension mounting plate (21) has multiple mounting holes for mounting additional brackets.

8. The modular extension bracket for harmonic detection according to claim 1, characterized in that, The support frame (1) has a groove (11) on one side for easy lifting of the rotating plate (2) or lifting device.

9. The modular extension bracket for harmonic detection according to claim 1, characterized in that, It also includes a support plate (6), which is fixedly installed on the top of the rotating plate (2) and located at the end of the rotating plate (2) away from the limiting frame (3), for supporting the item to be placed when the rotating plate (2) is lifted.

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