Bus duct with spring support

Abstract

The utility model discloses a bus duct with spring support, including bus duct main part, connecting plate, mounting seat and adjusting assembly, and mounting seat is located bus duct main part's both sides, and the both ends of every mounting seat all are equipped with connecting bolt, to with building connection fixed, in the top of two mounting seats, erect two connecting plates, and the position of connecting plate on mounting seat is adjustable, and the bus duct main part is equipped with between two connecting plates, the top of every connecting plate all is equipped with upper and is equipped with adjusting assembly, and the movable end of adjusting assembly is fixedly connected with bus duct main part, and the movable end of adjusting assembly is along the height direction elasticity of mounting seat and is close to or away from connecting plate. The utility model can dynamically adapt the uneven settlement of building structure, and automatically offset the tensile stress and pressure stress on bus duct body, thereby effectively protecting the integrity of mechanical structure and electrical connection point, maintaining the safe and stable operation of power supply system in building settlement process.

Description

Technical Field

[0001] This utility model relates to the field of power transmission accessories technology, and in particular to a busbar trunking with a spring support. Background Technology

[0002] Vertically installed busbar trunking acts as the "main artery" for building power transmission. Through its modular structure, it efficiently transmits large-capacity electrical energy vertically from the ground floor main distribution room to each floor. Compared to traditional cables, it features a compact structure that saves space, high safety and reliability, and ease of future maintenance and expansion, making it an ideal vertical power distribution solution for modern mid- to high-rise buildings.

[0003] In existing technologies, vertical busbar trunking is typically fixed to the building structure using rigid supports, with each unit segment rigidly connected by bolts or plugs. When uneven settlement occurs in the building, the relative displacement of the connection points with the building causes the busbar trunking to bear enormous external stress. When settlement increases the distance between installation points, the busbar trunking experiences tensile stress, which may cause the conductors to elongate or even break, and the connections to loosen. When the distance decreases, it experiences compressive stress, which may cause the trunking to bend and deform, and the internal insulation supports to break.

[0004] Therefore, it is urgent to research and develop a busbar trunking with flexible supports to solve the above-mentioned defects. Summary of the Invention

[0005] The purpose of this utility model is to provide a busbar trunking with spring supports. This busbar trunking with spring supports can dynamically adapt to uneven settlement of building structures and automatically offset the tensile and compressive stresses applied to the busbar trunking body, thereby effectively protecting the integrity of its mechanical structure and electrical connection points and maintaining the safe and stable operation of the power supply system during building settlement.

[0006] To achieve the above objectives, this utility model provides a busbar trunking with a spring support, the specific implementation of which is as follows:

[0007] A busbar trunking with spring supports includes a busbar trunking body, a connecting plate, a mounting base, and an adjustment assembly. The mounting bases are located on both sides of the busbar trunking body, and each mounting base has connecting bolts at both ends for connection and fixation to the building.

[0008] Two connecting plates are mounted on top of the two mounting bases. The position of the connecting plates on the mounting bases is adjustable. The main body of the busbar trunking is provided between the two connecting plates.

[0009] Each of the connecting plates is provided with an adjustment component on its top. The movable end of the adjustment component is fixedly connected to the main body of the busbar trunking, and the movable end of the adjustment component can move elastically closer to or further away from the connecting plate along the height direction of the mounting base.

[0010] When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting seats fixed at different locations in the building. The adjusting component dynamically compensates for the relative displacement between the two mounting seats through the elastic movement of its movable end, absorbing the tensile and compressive stresses acting on the main body of the busbar trunking, so as to maintain the morphological integrity of the main body of the busbar trunking and the stability of the electrical connection.

[0011] This utility model discloses a busbar trunking with a spring support. Compared with the prior art, it uses an adjustable component that can be flexibly moved to connect the busbar trunking body and the mounting base. When uneven settlement of the building causes relative displacement of the mounting bases fixed at different points, the adjustable component can act as a dynamic buffer mechanism to automatically absorb and offset the tensile and compressive stress transmitted to the busbar trunking body. This ensures that the mechanical structure of the busbar trunking is free from deformation and damage, while protecting the tightness of its internal electrical connections. Thus, it maintains the safe and stable operation of the power supply trunking system throughout the entire building settlement process.

[0012] In some embodiments, the adjustment assembly includes an adjustment screw, an adjustment plate, and an adjustment spring, with the adjustment screw provided at both ends of the top of each connecting plate, and the adjustment screw extending along the height direction of the mounting base;

[0013] The adjusting plate is mounted on the top of the adjusting screw located on the same connecting plate. The adjusting plate is the movable end of the adjusting assembly. The adjusting spring is sleeved on the adjusting screw. One end of the adjusting spring abuts against the bottom of the adjusting plate, and the other end abuts against the fixed end on the adjusting screw.

[0014] When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting seats fixed at different positions in the building, and the adjusting plate can move elastically along the axial direction of the adjusting screw.

[0015] By employing a classic elastic structure consisting of an adjusting screw, an adjusting plate, and an adjusting spring, the compression and rebound of the adjusting spring are directly converted into the vertical floating of the adjusting plate. This transforms the relative displacement between the mounting bases into controllable elastic deformation, achieving stable and continuous absorption of settlement stress and ensuring the compliance and reliability of the compensation process.

[0016] In some embodiments, the connecting plate is provided with a first limiting nut, the bottom end of the adjusting screw passes through the connecting plate and is screwed to the first limiting nut, the top of the connecting plate is provided with a locking nut, the locking nut is screwed to the adjusting screw, the top of the adjusting plate is provided with a second limiting nut, and the top end of the adjusting screw passes through the adjusting plate and is screwed to the second limiting nut.

[0017] Through the coordinated action of the first limiting nut, the locking nut, and the second limiting nut, a reliable connection and precise fixation between the adjusting screw and the connecting plate and the adjusting plate are achieved, ensuring the structural rigidity and stability of the adjusting assembly under force, preventing the components from loosening, and the nut adjustment facilitates precise fine-tuning of the initial height of the adjusting plate, thus presetting the system to the optimal working state.

[0018] In some embodiments, the fixed end of the adjusting screw is an adjusting nut sleeved on the adjusting screw, and the bottom end of the adjusting spring abuts against the adjusting nut.

[0019] By specifying the fixed end on the adjusting screw as an adjustable adjusting nut, users can change the preload of the adjusting spring by rotating the nut. This allows for flexible adjustment of the stiffness and initial support force of the elastic support according to the actual weight of the busbar and the expected settlement compensation requirements, greatly enhancing the adaptability of the bracket to busbars of different specifications and the adjustability of its compensation performance.

[0020] In some embodiments, each of the two adjusting plates has a connecting block located at both ends on its opposite side. The connecting block has a hook for engaging with a snap-fit ​​buckle on the outer wall of the busbar trunking body.

[0021] The adjustment plate and the busbar trunking body are connected by a snap-fit ​​mechanism using hooks and latches. This connection method is simple to operate and can effectively improve construction and maintenance efficiency. At the same time, it provides a firm constraint in the vertical direction, ensuring reliable linkage between the busbar trunking body and the movable end of the adjustment component.

[0022] In some embodiments, each of the connecting plates has guide members at both ends of its bottom, and each of the mounting bases has a guide groove at its top, with the guide members embedded in the guide groove and engaging with it for guidance.

[0023] The cooperation between the guide component and the guide groove provides precise guidance and constraint for the horizontal position adjustment of the connecting plate on the mounting base, ensuring that the connecting plate can only move smoothly in the predetermined direction and preventing it from shifting or twisting during adjustment or under stress. This ensures the alignment of the upper adjustment component with the busbar trunking body, allowing stress compensation to be performed in the correct direction.

[0024] In some embodiments, the guide is provided with a limiting member, and the top of the mounting base is provided with two limiting protrusions extending toward the center, and the two ends of the limiting member are respectively limited and engaged with the limiting protrusions on the same side.

[0025] The cooperation between the limiting component and the upper limit protrusion of the mounting base constitutes the limit of the horizontal movement of the connecting plate, effectively preventing the risk of the guide component accidentally slipping out of the guide groove during the adjustment process, and enhancing the safety and reliability of the entire support system during installation and long-term use.

[0026] In some embodiments, the connecting plate is provided with a connecting screw, the bottom end of which passes through the connecting plate and is screwed to the limiting member.

[0027] By using a connecting screw to connect and press the limiting component from above, a compact locking structure from top to bottom is formed, making the installation and fixing of the limiting component more convenient. It eliminates the need to operate from the bottom of the mounting base, simplifies the assembly process, and ensures the firmness of the connection.

[0028] In some embodiments, the guide member has a first through hole for the connecting screw to pass through, the side wall of the guide member has a first through groove that passes through itself and connects to the first through hole, the limiting member is mounted in the first through groove, and the limiting member has a connecting screw hole for the connecting screw to be screwed in.

[0029] The design of the first through hole and the first through groove allows the limiting component to be installed horizontally inside the guide component as an independent module, which simplifies the processing and assembly of the parts. When the limiting component needs to be repaired or replaced, it can be done easily and independently without replacing the entire guide mechanism, thus improving the maintainability of the system.

[0030] In some embodiments, the connecting bolt is provided in the guide groove at one end of the mounting base, and a right-angle connector is provided at the top of the other end of the mounting base, with the connecting bolt provided on the right-angle connector.

[0031] By directly installing connecting bolts in the guide groove and using a right-angle connector with connecting bolts at the other end, a more stable installation method is provided for the mounting base.

[0032] Based on the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0033] By setting up a flexible adjustment component to connect the busbar trunking body and the mounting base, when uneven settlement of the building causes relative displacement of the mounting bases fixed at different points, the adjustment component can act as a dynamic buffer mechanism to automatically absorb and offset the tensile and compressive stress transmitted to the busbar trunking body. This ensures that the mechanical structure of the busbar trunking is free from deformation and damage, while protecting the tightness of its internal electrical connections. As a result, the safe and stable operation of the power supply trunking system is maintained throughout the entire building settlement process. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 For the present utility model Figure 1 A magnified view of a portion of the image;

[0036] Figure 3 This is a schematic diagram of the structure of the main body of the busbar trunking to be dismantled according to this utility model;

[0037] Figure 4 For the present utility model Figure 3 Exploded view;

[0038] Figure 5 For the present utility model Figure 4 A magnified view of a portion of the image.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Busbar trunking body; 110. Fastener; 200. Mounting base; 210. Connecting bolt; 220. Guide groove; 230. Limiting flange; 240. Right-angle connector; 300. Connecting plate; 310. First limiting nut; 320. Connecting screw; 330. Guide; 331. First through hole; 332. First through groove; 340. Limiting component; 341. Connecting screw hole; 350. Locking nut; 400. Adjusting assembly; 410. Adjusting screw; 420. Adjusting spring; 430. Adjusting plate; 440. Adjusting nut; 450. Second limiting nut; 460. Connecting block; 461. Hook; 462. Fixing screw; 463. Fixing nut. Detailed Implementation

[0041] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0042] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0043] Unless otherwise specified or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0044] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0045] like Figure 1-5 As shown, the busbar trunking with spring bracket provided in this embodiment includes a busbar trunking body 100, a connecting plate 300, a mounting base 200 and an adjustment assembly 400. The mounting base 200 is provided on both sides of the busbar trunking body 100, and each mounting base 200 is provided with connecting bolts 210 at both ends for connecting and fixing to the building.

[0046] Two connecting plates 300 are mounted on top of the two mounting bases 200. The position of the connecting plates 300 on the mounting bases 200 is adjustable. The busbar trunking body 100 is provided between the two connecting plates 300.

[0047] Each of the connecting plates 300 is provided with an adjustment component 400 on its top. The movable end of the adjustment component 400 is fixedly connected to the busbar trunking body 100, and the movable end of the adjustment component 400 can move elastically towards or away from the connecting plate 300 along the height direction of the mounting base 200.

[0048] When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting seats 200 fixed at different positions in the building. The adjusting component 400 dynamically compensates for the relative displacement between the two mounting seats 200 through the elastic movement of its movable end, absorbing the tensile and compressive stresses acting on the busbar trunking body 100, so as to maintain the morphological integrity and electrical connection stability of the busbar trunking body 100.

[0049] In some embodiments, the adjustment assembly 400 includes an adjustment screw 410, an adjustment plate 430, and an adjustment spring 420. The adjustment screw 410 is provided at both ends of the top of each of the connecting plates 300, and the adjustment screw 410 extends along the height direction of the mounting base 200.

[0050] The adjusting plate 430 is mounted on the top of the adjusting screw 410 located on the same connecting plate 300. The adjusting plate 430 is the movable end of the adjusting assembly 400. The adjusting spring 420 is sleeved on the adjusting screw 410. One end of the adjusting spring 420 abuts against the bottom of the adjusting plate 430, and the other end abuts against the fixed end on the adjusting screw 410.

[0051] When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting bases 200 fixed at different positions in the building, and the adjusting plate 430 can move elastically along the axial direction of the adjusting screw 410.

[0052] By adopting a classic elastic structure consisting of an adjusting screw 410, an adjusting plate 430, and an adjusting spring 420, the compression and rebound of the adjusting spring 420 are directly converted into the vertical floating of the adjusting plate 430, thereby converting the relative displacement between the mounting bases 200 into controllable elastic deformation, realizing the smooth and continuous absorption of settlement stress, and ensuring the compliance and reliability of the compensation process.

[0053] In some embodiments, the connecting plate 300 is provided with a first limiting nut 310, the bottom end of the adjusting screw 410 passes through the connecting plate 300 and is screwed to the first limiting nut 310, the top of the connecting plate 300 is provided with a locking nut 350, the locking nut 350 is screwed to the adjusting screw 410, the top of the adjusting plate 430 is provided with a second limiting nut 450, and the top end of the adjusting screw 410 passes through the adjusting plate 430 and is screwed to the second limiting nut 450.

[0054] Through the coordinated action of the first limiting nut 310, the locking nut 350, and the second limiting nut 450, a reliable connection and precise fixation between the adjusting screw 410 and the connecting plate 300 and the adjusting plate 430 are achieved, ensuring the structural rigidity and stability of the adjusting assembly 400 under stress, preventing the components from loosening, and the nut adjustment facilitates precise fine-tuning of the initial height of the adjusting plate 430, thus presetting the system to the optimal working state.

[0055] In some embodiments, the fixed end of the adjusting screw 410 is an adjusting nut 440 sleeved on the adjusting screw 410, and the bottom end of the adjusting spring 420 abuts against the adjusting nut 440.

[0056] By specifying the fixed end on the adjusting screw 410 as an adjustable adjusting nut 440, the user can change the preload of the adjusting spring 420 by rotating the nut. This allows for flexible adjustment of the stiffness and initial support force of the elastic support according to the actual weight of the busbar and the expected settlement compensation requirements, greatly enhancing the adaptability of the bracket to busbars of different specifications and the adjustability of its compensation performance.

[0057] In some embodiments, each of the two adjusting plates 430 has a connecting block 460 located at both ends on one side opposite to the other. The connecting block 460 has a hook 461 for engaging with the fastener 110 on the outer wall of the busbar trunking body 100.

[0058] The adjustment plate 430 and the busbar trunking body 100 are connected by a snap-fit ​​method using hook 461 and buckle 110. The connection method is simple to operate and can effectively improve construction and maintenance efficiency. At the same time, it provides a firm constraint in the vertical direction to ensure reliable linkage between the busbar trunking body 100 and the movable end of the adjustment component 400.

[0059] In some embodiments, the connecting block 460 is fixedly connected to the adjusting plate 430 by means of a fixing screw 462 and a fixing nut 463.

[0060] In some embodiments, each of the connecting plates 300 has guide members 330 at both ends of its bottom, and each of the mounting bases 200 has a guide groove 220 at its top. The guide members 330 are embedded in the guide groove 220 and cooperate with the guide groove 220 for guidance.

[0061] The cooperation between the guide member 330 and the guide groove 220 provides precise guidance and constraint for the horizontal position adjustment of the connecting plate 300 on the mounting base 200, ensuring that the connecting plate 300 can only move smoothly in the predetermined direction, preventing it from shifting or twisting when adjusted or under stress, thereby ensuring the alignment of the upper adjustment component 400 with the busbar trunking body 100, so that stress compensation can be carried out in the correct direction.

[0062] In some embodiments, the guide member 330 is provided with a limiting member 340, and the top of the mounting base 200 is provided with two limiting protrusions 230 extending towards the center. The two ends of the limiting member 340 are respectively limited and engaged with the limiting protrusions 230 on the same side.

[0063] The cooperation between the limiting member 340 and the upper limit protrusion 230 of the mounting base 200 forms the limit of the horizontal movement of the connecting plate 300, effectively preventing the risk of the guide member 330 accidentally slipping out of the guide groove 220 during the adjustment process, and enhancing the safety and reliability of the entire support system during installation and long-term use.

[0064] In some embodiments, the connecting plate 300 is provided with a connecting screw 320, the bottom end of which passes through the connecting plate 300 and is screwed to the limiting member 340.

[0065] By using a connecting screw 320 to connect and press the limiting member 340 from above, a compact locking structure from top to bottom is formed, which makes it easier to install and fix the limiting member 340 without having to operate from the bottom of the mounting base 200, simplifying the assembly process and ensuring the firmness of the connection.

[0066] In some embodiments, the guide member 330 has a first through hole 331 for the connecting screw 320 to pass through, and the side wall of the guide member 330 has a first through groove 332 that passes through itself and connects to the first through hole 331. The limiting member 340 is mounted in the first through groove 332, and the limiting member 340 has a connecting screw hole 341 for the connecting screw 320 to be screwed in.

[0067] The design of the first through hole 331 and the first through groove 332 allows the limiting member 340 to be installed horizontally inside the guide member 330 as an independent module, which simplifies the processing and assembly of the parts. When the limiting member 340 needs to be repaired or replaced, it can be easily done separately without replacing the entire guide mechanism, thus improving the maintainability of the system.

[0068] In some embodiments, the connecting bolt 210 is provided in the guide groove 220 at one end of the mounting base 200, and the right-angle connector 240 is provided on the top of the other end of the mounting base 200, and the connecting bolt 210 is provided on the right-angle connector 240.

[0069] By directly setting the connecting bolt 210 in the guide groove 220 and using the right-angle connector 240 with the connecting bolt 210 at the other end, a more stable installation method is provided for the mounting base 200.

[0070] In some embodiments, the connection structure between the right-angle connector 240 and the mounting base 200 is the same as the connection structure between the connecting plate 300 and the mounting base 200, both of which are achieved by using a connecting screw 320, a guide 330 and a limiting member 340, and can also slide and adjust within the range of the guide groove 220.

[0071] The busbar trunking with spring supports provided in this embodiment, compared with the prior art, connects the busbar trunking body 100 and the mounting base 200 by setting an elastically movable adjustment component 400. When uneven settlement of the building causes relative displacement of the mounting base 200 fixed at different points, the adjustment component 400 can act as a dynamic buffer mechanism to automatically absorb and offset the tensile and compressive stress transmitted to the busbar trunking body 100. This ensures that the mechanical structure of the busbar trunking is free from deformation and damage, while protecting the tightness of its internal electrical connections. Thus, the safe and stable operation of the power supply trunking system is maintained throughout the entire building settlement process.

[0072] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A busbar trunking system with a spring support, characterized in that, It includes a busbar trunking body (100), a connecting plate (300), a mounting base (200), and an adjusting assembly (400). The mounting base (200) is located on both sides of the busbar trunking body (100), and each mounting base (200) has connecting bolts (210) at both ends for connecting and fixing to the building. Two connecting plates (300) are mounted on top of the two mounting bases (200), and the position of the connecting plates (300) on the mounting bases (200) is adjustable. The busbar trunking body (100) is provided between the two connecting plates (300). Each of the connecting plates (300) is provided with an adjustment component (400) on its top. The movable end of the adjustment component (400) is fixedly connected to the busbar trunking body (100), and the movable end of the adjustment component (400) can move elastically closer to or further away from the connecting plate (300) along the height direction of the mounting base (200). When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting seats (200) fixed at different locations in the building. The adjustment component (400) dynamically compensates for the relative displacement between the two mounting seats (200) through the elastic movement of its movable end, and absorbs the tensile and compressive stresses acting on the busbar trunking body (100) to maintain the morphological integrity and electrical connection stability of the busbar trunking body (100).

2. The busbar trunking with spring supports as described in claim 1, characterized in that, The adjustment assembly (400) includes an adjustment screw (410), an adjustment plate (430), and an adjustment spring (420). The adjustment screw (410) is provided at both ends of the top of each of the connecting plates (300). The adjustment screw (410) extends along the height direction of the mounting base (200). The adjusting plate (430) is mounted on the top of the adjusting screw (410) located on the same connecting plate (300). The adjusting plate (430) is the movable end of the adjusting assembly (400). The adjusting spring (420) is sleeved on the adjusting screw (410). One end of the adjusting spring (420) abuts against the bottom of the adjusting plate (430), and the other end abuts against the fixed end on the adjusting screw (410). When uneven settlement occurs in the building structure, relative displacement occurs between the two mounting seats (200) fixed at different positions in the building, and the adjusting plate (430) can move elastically along the axial direction of the adjusting screw (410).

3. The busbar trunking with spring supports as described in claim 2, characterized in that, The connecting plate (300) is provided with a first limiting nut (310). The bottom end of the adjusting screw (410) passes through the connecting plate (300) and is screwed to the first limiting nut (310). The top of the connecting plate (300) is provided with a locking nut (350). The locking nut (350) is screwed to the adjusting screw (410). The top of the adjusting plate (430) is provided with a second limiting nut (450). The top end of the adjusting screw (410) passes through the adjusting plate (430) and is screwed to the second limiting nut (450).

4. The busbar trunking with spring supports as described in claim 3, characterized in that, The fixed end of the adjusting screw (410) is an adjusting nut (440) sleeved on the adjusting screw (410), and the bottom end of the adjusting spring (420) abuts against the adjusting nut (440).

5. The busbar trunking with spring supports as described in claim 2, characterized in that, Each of the two adjusting plates (430) has a connecting block (460) located at both ends on one side opposite to the other. The connecting block (460) has a hook (461) for engaging with the fastener (110) on the outer wall of the busbar body (100).

6. The busbar trunking with spring supports as described in any one of claims 1-5, characterized in that, Each of the connecting plates (300) has guide members (330) at both ends of its bottom, and each of the mounting bases (200) has a guide groove (220) at its top. The guide members (330) are embedded in the guide groove (220) and cooperate with the guide groove (220) for guidance.

7. The busbar trunking with spring supports as described in claim 6, characterized in that, The guide member (330) is provided with a limiting member (340), and the top of the mounting base (200) is provided with two limiting protrusions (230) extending towards the center. The two ends of the limiting member (340) are respectively limited and engaged with the limiting protrusions (230) on the same side.

8. The busbar trunking with spring supports as described in claim 7, characterized in that, The connecting plate (300) is provided with a connecting screw (320), and the bottom end of the connecting screw (320) passes through the connecting plate (300) and is screwed to the limiting member (340).

9. The busbar trunking with spring supports as described in claim 8, characterized in that, The guide member (330) has a first through hole (331) through which the connecting screw (320) passes. The side wall of the guide member (330) has a first through groove (332) that passes through itself and leads to the first through hole (331). The limiting member (340) is mounted in the first through groove (332). The limiting member (340) has a connecting screw hole (341) for the connecting screw (320) to be screwed in.

10. The busbar trunking with spring supports as described in claim 6, characterized in that, The connecting bolt (210) is provided in the guide groove (220) at one end of the mounting base (200), and the right-angle connector (240) is provided on the top of the other end of the mounting base (200), and the connecting bolt (210) is provided on the right-angle connector (240).

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