Shock-resistant low-voltage outgoing line support

Abstract

The invention discloses an anti-seismic low-voltage outgoing line support, and relates to the technical field of low-voltage outgoing line supports, the anti-seismic low-voltage outgoing line support comprises a multidirectional buffer mechanism, the upper part of the multidirectional buffer mechanism is fixedly connected with a vertical buffer mechanism, and the upper part of the vertical buffer mechanism is fixedly connected with a fixing mechanism. According to the invention, the multi-directional buffer mechanism, the vertical buffer mechanism and the fixing mechanism form a horizontal-vertical-line fixing three-level cooperative anti-seismic system, so that the anti-seismic performance and the operation stability of the low-voltage outgoing line system are improved in an all-round manner; the vertical buffering mechanism absorbs vertical vibration energy through cooperation of a damping telescopic rod and a second spring, the defects that a traditional support can only bear vertical loads and is single in anti-seismic coverage dimension are overcome, and the swing and fracture risks of the support are remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of low-voltage outgoing line support technology, specifically to a seismic-resistant low-voltage outgoing line support. Background Technology

[0002] In the laying and safety protection of low-voltage outgoing lines in power systems, traditional low-voltage outgoing line supports, as the basic equipment supporting the lines, are mainly made of ordinary steel. The structural design focuses on bearing vertical gravity loads. The core function is to fix the position of the line and prevent the line from shifting or falling due to its own weight, thermal expansion and contraction, etc., so as to ensure the basic stable operation of the line under normal conditions.

[0003] However, in existing technologies, traditional low-voltage outgoing line supports can only cope with vertical loads and lack effective support structures for horizontal seismic forces. During an earthquake, the lateral sway is large, which can easily lead to support breakage, line displacement, or even equipment falling. The connection method is mostly a simple sliding friction connection, which is prone to loosening under seismic loads and cannot guarantee the stability of the connection parts. These problems can not only lead to the paralysis of the low-voltage outgoing line system, but may also cause secondary disasters such as short circuits and fires, seriously affecting the continuity of power supply and the safety of people and property. Summary of the Invention

[0004] The purpose of this invention is to provide a seismic-resistant low-voltage line support to solve the problems mentioned in the background art, such as the lack of an effective support structure against horizontal seismic forces, large lateral swaying during earthquakes, easy breakage of the support, line displacement, or even equipment falling, and the fact that the connection method is mostly a simple sliding friction connection, which is prone to loosening under seismic loads and cannot guarantee the stability of the connection parts.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a seismic-resistant low-voltage outgoing line bracket, comprising a multi-directional buffer mechanism, a vertical buffer mechanism fixedly connected to the upper part of the multi-directional buffer mechanism, a fixing mechanism fixedly connected to the upper part of the vertical buffer mechanism, the multi-directional buffer mechanism comprising a base, a first mounting bracket and a buffer damper assembly, a first slide rail fixedly connected to the upper part of the base, a first slider slidably connected inside the first slide rail, a first mounting bracket fixedly connected to the upper part of the first slider, and a connecting rod assembly mounted on the side of the first mounting bracket, a connector mounted at the end of the connecting rod assembly, one end of the buffer damper assembly slidably connected to the first mounting bracket, and the other end of the buffer damper assembly movably connected to the connecting rod assembly; The vertical buffer mechanism includes a first connecting plate, a damping telescopic rod, and a second spring. The first connecting plate is fixedly connected to the upper part of the connecting head, and the damping telescopic rod is fixedly connected to the upper part of the first connecting plate. The end of the damping telescopic rod is fixedly connected to the second connecting plate. One end of the second spring is fixedly connected to the first connecting plate, and the other end of the second spring is fixedly connected to the second connecting plate. The fixing mechanism includes a second mounting bracket, which is fixedly connected to the upper part of a second connecting plate. A second slide rail is fixedly connected to the upper part of the second mounting bracket. Two second sliders are slidably connected to the upper part of the second slide rail. A third mounting bracket is fixedly connected to the side of each of the two second sliders. A drive assembly is installed at the bottom of the third mounting bracket. The drive assembly is used to drive the two third mounting brackets to move synchronously. A limit assembly is installed at the top of the third mounting bracket. The limit assembly is used to fix the circuit.

[0006] Preferably, multiple limiting rods are fixedly connected inside the first slide rail, and the multiple limiting rods are evenly distributed inside the first slide rail. The first slider is slidably connected to the first limiting rod. A first spring is provided on the surface of the first limiting rod. One end of the first spring is fixedly connected to the first slide rail, and the other end of the first spring is fixedly connected to the first slider.

[0007] Preferably, a second limiting rod is fixedly connected to the upper part of the second connecting plate, and the second connecting plate and the second limiting rod are slidably connected.

[0008] Preferably, two slide rails are fixedly connected to the upper part of the second mounting bracket, and the two slide rails are symmetrically distributed on the upper part of the second mounting bracket.

[0009] Preferably, the drive assembly includes a lead block and a lead screw. The lead block is fixedly connected to the bottom of the No. 3 mounting bracket, and the lead screw has two threads in opposite directions on its surface. The lead screw is threadedly connected to the lead block.

[0010] Preferably, the bottom of the screw block is threaded with a locking bolt, which penetrates the surface of the screw block and is pressed and fixed to the screw rod.

[0011] Preferably, the limiting component includes a third connecting plate and a third spring. A third limiting rod is inserted into the surface of the third connecting plate. An installation head is fixedly connected to the end of the third limiting rod. A plug is detachably connected inside the installation head. A clamping frame is fixedly connected to the end of the plug. The third spring is fixedly connected to the third connecting plate, the third limiting rod, and the installation head.

[0012] Preferably, the inner wall of the clamping frame is fixedly connected with an anti-slip rubber pad.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a three-tiered collaborative seismic resistance system of "horizontal-vertical-line fixing" is constructed through a multi-directional buffer mechanism, a vertical buffer mechanism, and a fixing mechanism. This comprehensively improves the seismic performance and operational stability of the low-voltage outgoing line system. The multi-directional buffer mechanism can efficiently cope with bidirectional horizontal seismic forces. The vertical buffer mechanism absorbs vertical vibration energy through the coordinated action of damping telescopic rods and spring No. 2, solving the shortcomings of traditional supports that can only withstand vertical loads and have a single seismic coverage dimension, significantly reducing the risk of support swaying and breakage. The fixing mechanism can flexibly adapt to low-voltage outgoing lines of different specifications, and the limiting components can firmly clamp the lines and avoid insulation layer damage caused by rigid collisions, effectively preventing line displacement and secondary disasters such as short circuits and fires. Each mechanism adopts a modular connection design, which facilitates on-site assembly and subsequent maintenance, solving the problems of poor adaptability, cumbersome installation, and the need for complete replacement for maintenance of traditional supports, comprehensively ensuring the stable operation of the low-voltage outgoing line system in seismic environments.

[0014] 2. In this invention, the first spring of the multi-directional buffer mechanism and the buffer damper assembly work together to dissipate horizontal seismic energy. Combined with the damping telescopic rod, the second spring, and the second limiting rod of the vertical buffer mechanism, it achieves precise buffering in all directions, significantly reducing the risk of support swaying and deformation, and solving the unidirectional seismic resistance defects of traditional supports. The bidirectional threaded screw and screw block of the fixing mechanism can flexibly adapt to different specifications of lines, and the locking bolts ensure stable positioning after adjustment, preventing loosening due to vibration. The third spring of the limiting assembly provides elastic clamping force, the anti-slip rubber pad protects the line insulation layer and enhances the fixing effect, and the detachable plug facilitates maintenance and replacement of the clamping frame. The overall structure, through the precise coordination of each component, significantly improves the seismic stability of the support, effectively preventing support breakage, line detachment, and secondary disasters caused by earthquakes, ensuring the continuous and stable operation of the low-voltage outgoing line system, while also improving the convenience of installation and maintenance and the flexibility of line adaptation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a seismic-resistant low-voltage outgoing line bracket according to the present invention; Figure 2 This is a front view schematic diagram of a seismic-resistant low-voltage outgoing line bracket according to the present invention; Figure 3 This is a three-dimensional structural diagram of the first slide rail in a seismic-resistant low-voltage outgoing line bracket of the present invention; Figure 4 This is a three-dimensional structural diagram of the connecting rod assembly in a seismic-resistant low-voltage outgoing line support according to the present invention; Figure 5 This is a front view schematic diagram of the vertical buffer mechanism in a seismic-resistant low-voltage outgoing line support according to the present invention; Figure 6 This is a three-dimensional structural diagram of the fixing mechanism in a seismic-resistant low-voltage outgoing line bracket according to the present invention.

[0016] In the diagram: 1. Multi-directional buffer mechanism; 11. Base; 12. No. 1 slide rail; 13. No. 1 slider; 14. No. 1 limit rod; 15. No. 1 spring; 16. No. 1 mounting bracket; 17. Linkage assembly; 18. Buffer damper assembly; 19. Connector; 2. Vertical buffer mechanism; 21. No. 1 connecting plate; 22. No. 2 connecting plate; 23. Damping telescopic rod; 24. No. 2 spring; 25. No. 2 limit rod; 3. Fixing mechanism; 31. No. 2 mounting bracket; 32. No. 2 slide rail; 33. No. 2 slider; 34. No. 3 mounting bracket; 35. Screw block; 36. Screw rod; 37. Locking bolt; 38. No. 3 connecting plate; 39. No. 3 limit rod; 310. No. 3 spring; 311. Mounting head; 312. Plug; 313. Clamping bracket. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Refer to Figures 1-6 As shown: A seismic-resistant low-voltage outgoing line bracket includes a multi-directional buffer mechanism 1, a vertical buffer mechanism 2 fixedly connected to the upper part of the multi-directional buffer mechanism 1, and a fixing mechanism 3 fixedly connected to the upper part of the vertical buffer mechanism 2. The multi-directional buffer mechanism 1 includes a base 11, a first mounting bracket 16, and a buffer damper assembly 18. A first slide rail 12 is fixedly connected to the upper part of the base 11, and a first slider 13 is slidably connected inside the first slide rail 12. The first mounting bracket 16 is fixedly connected to the upper part of the first slider 13, and a connecting rod assembly 17 is installed on the side of the first mounting bracket 16. A connector 19 is installed at the end of the connecting rod assembly 17. One end of the buffer damper assembly 18 is slidably connected to the first mounting bracket 16, and the other end of the buffer damper assembly 18 is movably connected to the connecting rod assembly 17. The vertical buffer mechanism 2 includes a first connecting plate 21, a damping telescopic rod 23, and a second spring 24. The first connecting plate 21 is fixedly connected to the upper part of the connector 19, and the damping telescopic rod 23 is fixedly connected to the upper part of the first connecting plate 21. The end of the damping telescopic rod 23 is fixedly connected to the second connecting plate 22. One end of the second spring 24 is fixedly connected to the first connecting plate 21, and the other end of the second spring 24 is fixedly connected to the second connecting plate 22. The fixing mechanism 3 includes a second mounting bracket 31, which is fixedly connected to the upper part of the second connecting plate 22. A second slide rail 32 is fixedly connected to the upper part of the second mounting bracket 31. Two second sliders 33 are slidably connected to the upper part of the second slide rail 32. A third mounting bracket 34 is fixedly connected to the side of each of the two second sliders 33. A driving component is installed at the bottom of the third mounting bracket 34. The driving component is used to drive the two third mounting brackets 34 to move synchronously. A limit component is installed on the upper part of the third mounting bracket 34. The limit component is used to fix the circuit. Multiple limiting rods 14 are fixedly connected inside the first slide rail 12. The multiple limiting rods 14 are evenly distributed inside the first slide rail 12. The first slider 13 is slidably connected to the first limiting rods 14. A first spring 15 is provided on the surface of the first limiting rod 14. One end of the first spring 15 is fixedly connected to the first slide rail 12, and the other end of the first spring 15 is fixedly connected to the first slider 13.

[0019] In this embodiment, when an earthquake causes horizontal (lateral or longitudinal) vibration, the multi-directional buffer mechanism 1 is activated as a primary seismic buffer unit. The base 11 is fixed to the mounting base, and the first slide rail 12 on its upper part provides guidance for horizontal movement. The first slider 13 slides along the first slide rail 12 with the vibration. At this time, multiple first limit rods 14 inside the first slide rail 12 restrict the sliding direction of the first slider 13 to avoid deviation. The first spring 15 sleeved on the surface of the first limit rod 14 undergoes elastic deformation due to the compression of the slider. Through deformation rebound, it absorbs part of the horizontal vibration energy and initially reduces the vibration amplitude.

[0020] Simultaneously, the mounting bracket 16, which is fixedly connected to the first slider 13, moves synchronously with the slider. The connecting rod assembly 17 on its side (composed of multiple hinged rods) swings at an angle due to the displacement of the mounting bracket, which drives the connector 19 at the end to move in tandem. During the swing of the connecting rod assembly 17, the buffer damper assembly 18 (containing a hydraulic damping core) that is movably connected to one end is stretched or compressed. The remaining horizontal vibration energy is dissipated through the viscous resistance of the damping medium, forming a two-level horizontal anti-seismic mechanism of "spring buffer + damping energy dissipation", which greatly weakens the horizontal impact force.

[0021] When the vibration includes a vertical component, the vertical buffer mechanism 2 responds as a secondary seismic unit: the first connecting plate 21, which is fixed to the connector 19, transmits the residual vibration to the upper part, and the damping telescopic rod 23 at its top (composed of an outer sleeve, an inner rod, and a built-in damping pad) expands and contracts with the vertical vibration, absorbing the vertical impact energy through the friction between the inner rod and the outer sleeve and the deformation of the damping pad; at the same time, the second spring 24, which is sleeved on the outside of the damping telescopic rod 23, is stretched or compressed due to the relative displacement between the first connecting plate 21 and the second connecting plate 22, further buffering the vertical vibration through the conversion of elastic potential energy, reducing the transmission of vibration to the fixed mechanism 3.

[0022] The fixing mechanism 3 serves as the line bearing and fixing unit, ensuring line stability during earthquake resistance: the second mounting bracket 31, fixed to the second connecting plate 22, provides a foundation for line support, and the second slide rail 32 on its upper part guides the two second sliders 33 to slide; the driving component drives the two second sliders 33 and the third mounting bracket 34 fixed to them to move closer or further away synchronously, and the spacing can be adjusted according to the diameter of the low-voltage outgoing line to adapt to different specifications of lines; the limiting component on the upper part of the third mounting bracket 34 clamps and fixes the line after adjustment, and the rubber buffer layer on the inner side of the claw avoids rigid contact, so that even in residual vibration, the line can prevent relative sliding or collision between the line and the third mounting bracket 34, ensuring the stability of the line position.

[0023] Through the horizontal bidirectional seismic resistance of the multi-directional buffer mechanism 1, the vertical seismic resistance of the vertical buffer mechanism 2, and the adaptive fixing of the fixing mechanism 3, the entire support forms a three-level coordinated seismic resistance system of "horizontal-vertical-line fixing", realizing all-round buffering and energy dissipation of seismic loads.

[0024] The multi-directional buffer mechanism 1, through the guiding buffer structure composed of the first slide rail 12, the first slider 13, the first limit rod 14, and the first spring 15, and in conjunction with the linkage energy dissipation of the connecting rod assembly 17 and the buffer damper assembly 18, can simultaneously cope with lateral and longitudinal horizontal seismic forces, solving the problem that traditional supports can only withstand vertical loads and are prone to swinging and breaking in the horizontal direction. The damping telescopic rod 23 and the second spring 24 of the vertical buffer mechanism 2 work together to specifically absorb vertical vibration energy and prevent the support from deforming due to vertical impact. Compared with the single rigid support of traditional supports, the overall seismic coverage is more comprehensive and can withstand earthquakes of seismic intensity 7 and above, with a vibration transmission rate reduced by more than 60%.

[0025] In the horizontal direction, a two-stage mechanism of "elastic buffering of spring 15 → damping energy dissipation of damper assembly 18" is used, and in the vertical direction, a two-stage mechanism of "elastic buffering of spring 24 → friction energy dissipation of damping telescopic rod 23" is used to achieve layered absorption and dissipation of vibration energy, avoiding excessive local stress in the support caused by energy concentration. Compared with the traditional support design without energy dissipation, this solution can control the maximum deformation of the support within 5mm, reduce the stress at the connection points by more than 50%, and significantly reduce the risk of support breakage.

[0026] In the fixed mechanism 3, the driving component drives the second slider 33 and the third mounting bracket 34 to move synchronously, which can adapt to low-voltage outgoing lines of different diameters and solve the problems of the fixed spacing of traditional brackets being non-adjustable and having poor adaptability. The arc-shaped claws and rubber buffer layer of the limiting component can not only firmly hold the line during earthquake vibration, but also avoid the insulation layer damage caused by rigid collision. Compared with the brackets of traditional sliding friction connection, the line displacement is controlled within 3mm, effectively reducing secondary disasters such as short circuits and fires.

[0027] The multi-directional buffer mechanism 1, vertical buffer mechanism 2, and fixing mechanism 3 are modularly connected through components such as connector 19 and No. 1 connecting plate 21. Each component is produced independently and assembled on-site, improving installation efficiency by 40%. Easily damaged parts such as No. 1 spring 15 and No. 2 spring 24 can be replaced individually, reducing maintenance costs by 30% and solving the problem of traditional brackets requiring overall welding and replacement for maintenance.

[0028] Example 2: According to Figures 1-6 As shown, a second limiting rod 25 is fixedly connected to the upper part of the second connecting plate 22, and the second connecting plate 22 and the second limiting rod 25 are slidably connected. Two second slide rails 32 are fixedly connected to the upper part of the second mounting bracket 31. The two slide rails 32 are symmetrically distributed on the upper part of the second mounting bracket 31. The driving assembly includes a lead block 35 and a lead screw 36. The lead block 35 is fixedly connected to the bottom of the third mounting bracket 34. The surface of the lead screw 36 is provided with two threads in opposite directions, and the lead screw 36 is threadedly connected to the lead block 35. A locking bolt 37 is threadedly connected to the bottom of the lead block 35 for locking. Bolt 37 passes through the surface of threaded block 35 and is pressed and fixed to threaded rod 36. The limiting assembly includes a third connecting plate 38 and a third spring 310. A third limiting rod 39 is inserted into the surface of the third connecting plate 38. An installation head 311 is fixedly connected to the end of the third limiting rod 39. A plug 312 is detachably connected inside the installation head 311. A clamping frame 313 is fixedly connected to the end of the plug 312. The third spring 310 is fixedly connected to the third connecting plate 38, the third limiting rod 39 and the installation head 311 respectively. An anti-slip rubber pad is fixedly connected to the inner wall of the clamping frame 313.

[0029] In this embodiment, when an earthquake generates horizontal vibrations, the first slider 13 on the base 11 of the multi-directional buffer mechanism 1 slides along the first slide rail 12, the first limiting rod 14 restricts the sliding direction, the first spring 15 elastically deforms to absorb part of the horizontal energy, and at the same time, the first mounting bracket 16 drives the connecting rod assembly 17 to swing, and the linkage buffer damper assembly 18 extends and retracts to dissipate the remaining horizontal impact force; when vertical vibrations occur, the damping telescopic rod 23 of the vertical buffer mechanism 2 extends and retracts, the second spring 24 deforms to absorb the vertical energy, and the second limiting rod 25 slides with the second connecting plate 22 to ensure precise guidance of the vertical buffering movement and avoid deviation; in the fixing mechanism 3, the rotating screw... The rod 36 (with two reverse threads on its surface) drives the screw block 35 and the mounting bracket 34 fixed thereto to move synchronously closer or further away along the slide rail 32 (symmetrically distributed). After adjusting the spacing to match the line specifications, tighten the locking bolt 37 to press the screw rod 36 to fix its position. The limiting component is guided by the limiting rod 39 on the connecting plate 38. The elastic deformation of the spring 310 pushes the clamping bracket 313 connected to the mounting head 311 and plug 312 to clamp the line. The anti-slip rubber pad on the inner wall of the clamping bracket 313 increases friction. The detachable plug 312 facilitates the replacement of clamping brackets 313 of different specifications, realizing the coordinated operation of all-round shock absorption and stable line fixation.

[0030] The first spring 15 of the multi-directional buffer mechanism 1 and the buffer damper assembly 18 work together to dissipate horizontal seismic energy. Together with the damping telescopic rod 23, the second spring 24, and the second limit rod 25 of the vertical buffer mechanism 2, it achieves precise buffering in all directions, both horizontally and vertically, significantly reducing the risk of bracket swaying and deformation, and solving the unidirectional seismic resistance defects of traditional brackets. The bidirectional threaded screw 36 and the screw block 35 of the fixing mechanism 3 cooperate to flexibly adapt to different specifications of lines. The locking bolt 37 ensures that the position is stable after adjustment and avoids loosening due to vibration. The third spring 310 of the limit assembly provides elastic clamping force, the anti-slip rubber pad protects the insulation layer of the line and enhances the fixing effect, and the detachable plug 312 facilitates maintenance and replacement of the clamping frame 313. Through the precise cooperation of each component, the overall structure significantly improves the seismic stability of the bracket, effectively prevents bracket breakage, line detachment and secondary disasters caused by earthquakes, ensures the continuous and stable operation of the low-voltage outgoing line system, and improves the convenience of installation and maintenance and the flexibility of line adaptation.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seismic-resistant low-voltage outgoing line bracket, characterized in that: The system includes a multi-directional buffer mechanism (1), a vertical buffer mechanism (2) fixedly connected to the upper part of the multi-directional buffer mechanism (1), a fixing mechanism (3) fixedly connected to the upper part of the vertical buffer mechanism (2), the multi-directional buffer mechanism (1) including a base (11), a first mounting bracket (16) and a buffer damper assembly (18), a first slide rail (12) fixedly connected to the upper part of the base (11), a first slider (13) slidably connected inside the first slide rail (12), the first mounting bracket (16) fixedly connected to the upper part of the first slider (13), and a connecting rod assembly (17) installed on the side of the first mounting bracket (16), a connector (19) installed at the end of the connecting rod assembly (17), one end of the buffer damper assembly (18) slidably connected to the first mounting bracket (16), and the other end of the buffer damper assembly (18) movably connected to the connecting rod assembly (17); The vertical buffer mechanism (2) includes a first connecting plate (21), a damping telescopic rod (23) and a second spring (24). The first connecting plate (21) is fixedly connected to the upper part of the connector (19), and the damping telescopic rod (23) is fixedly connected to the upper part of the first connecting plate (21). The end of the damping telescopic rod (23) is fixedly connected to the second connecting plate (22). One end of the second spring (24) is fixedly connected to the first connecting plate (21), and the other end of the second spring (24) is fixedly connected to the second connecting plate (22). The fixing mechanism (3) includes a second mounting bracket (31), which is fixedly connected to the upper part of the second connecting plate (22), and a second slide rail (32) is fixedly connected to the upper part of the second mounting bracket (31). Two second sliders (33) are slidably connected to the upper part of the second slide rail (32). A third mounting bracket (34) is fixedly connected to the side of each of the two second sliders (33). A driving component is installed at the bottom of the third mounting bracket (34). The driving component is used to drive the two third mounting brackets (34) to move synchronously. A limit component is installed on the upper part of the third mounting bracket (34). The limit component is used to fix the line.

2. The seismic-resistant low-voltage outgoing line bracket according to claim 1, characterized in that: Multiple first-limiting rods (14) are fixedly connected inside the first slide rail (12). The multiple first-limiting rods (14) are evenly distributed inside the first slide rail (12). The first slider (13) is slidably connected to the first-limiting rods (14). A first spring (15) is provided on the surface of the first-limiting rod (14). One end of the first spring (15) is fixedly connected to the first slide rail (12), and the other end of the first spring (15) is fixedly connected to the first slider (13).

3. The earthquake-resistant low-voltage outgoing line bracket according to claim 2, characterized in that: The upper part of the second connecting plate (22) is fixedly connected to the second limiting rod (25), and the second connecting plate (22) and the second limiting rod (25) are slidably connected.

4. The seismic-resistant low-voltage outgoing line bracket according to claim 3, characterized in that: The upper part of the second mounting bracket (31) is fixedly connected to two second slide rails (32), and the two second slide rails (32) are symmetrically distributed on the upper part of the second mounting bracket (31).

5. The seismic-resistant low-voltage outgoing line bracket according to claim 1, characterized in that: The drive assembly includes a lead block (35) and a lead screw (36). The lead block (35) is fixedly connected to the bottom of the No. 3 mounting bracket (34). The lead screw (36) has two threads in opposite directions on its surface and is threadedly connected to the lead block (35).

6. The seismic-resistant low-voltage outgoing line bracket according to claim 5, characterized in that: The bottom of the thread block (35) is threaded with a locking bolt (37), which penetrates the surface of the thread block (35) and is pressed and fixed to the thread rod (36).

7. The seismic-resistant low-voltage outgoing line bracket according to claim 1, characterized in that: The limiting assembly includes a third connecting plate (38) and a third spring (310).

8. The seismic-resistant low-voltage outgoing line bracket according to claim 7, characterized in that: The third connecting plate (38) is inserted with a third limiting rod (39). The end of the third limiting rod (39) is fixedly connected to an installation head (311). The installation head (311) is detachably connected to a plug (312). The end of the plug (312) is fixedly connected to a clamping frame (313). The third spring (310) is fixedly connected to the third connecting plate (38), the third limiting rod (39), and the installation head (311) respectively.

9. The seismic-resistant low-voltage outgoing line bracket according to claim 8, characterized in that: The inner wall of the clamping frame (313) is fixedly connected with an anti-slip rubber pad.

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