Intelligent anti-impact power grid low-voltage switch cabinet

Abstract

The invention discloses an intelligent impact-resistant power grid low-voltage switch cabinet, and relates to the technical field of electric power facilities, the intelligent impact-resistant power grid low-voltage switch cabinet comprises a cabinet body and a cabinet door hinged to the front surface of the cabinet body, and further comprises a pair of protection frames which are respectively installed on the two sides of the cabinet body, a plurality of cross beams are vertically distributed in the protection frames, and connecting suites are symmetrically installed on the inner sides of the cross beams. A plurality of fastening frames and buffer side plates which are fixed with the connecting suites are installed at the corners of the inner side of the cabinet body, the buffer side plates are movably installed in the protection frame, elastic limiting rod pieces penetrating through the connecting suites are fixedly connected to the inner sides of the buffer side plates, fastening positioning pieces penetrating through the cabinet body are fixedly connected to the fastening frames, and the elastic limiting rod pieces are fixedly connected to the inner sides of the buffer side plates. The inner side of the cabinet door is provided with positioning holes matched with the fastening positioning pieces, and the reinforcing debugging frame is installed on the back faces of the pair of protection frames. According to the invention, a plurality of cross beams and connecting suites are additionally arranged in a pair of protective frames, and multi-point rigid connection with the fastening frame on the inner side of the cabinet body is realized, so that a distributed stress frame is constructed.

Description

Technical Field

[0001] This invention relates to the field of power facility technology, specifically to an intelligent, impact-resistant low-voltage switchgear for power grids. Background Technology

[0002] With the increasing demands for intelligence and reliability in power grid systems, low-voltage switchgear, as a key device for power distribution and control, is receiving increasing attention for its operational stability and resilience.

[0003] The existing patent application, with publication number CN212849516U and publication date of March 30, 2021, is titled "An Impact-Resistant Intelligent High and Low Voltage Switchgear." This patent includes a high and low voltage switchgear body. Buffer plates are fixedly connected to the top and bottom of both sides of the switchgear body. A protective plate is provided on the front of the switchgear body. Extension plates are provided on both sides of the top and bottom of the back of the protective plate. One end of the extension plate, away from the protective plate, extends into the interior of the buffer plate. A sliding plate is fixedly connected to the other end of the extension plate, away from the protective plate. The surface of the sliding plate is slidably connected to the inner wall of the buffer plate. A buffer spring is fixedly connected to the back of the sliding plate, and the back of the buffer spring is fixedly connected to the rear side of the inner wall of the buffer plate. This utility model solves the problem that existing intelligent high and low voltage switchgear lacks impact resistance, leading to damage to the switchgear if workers accidentally collide with it during operation.

[0004] The aforementioned application has shortcomings. The buffer structure is mainly concentrated on the independent buffer plates and spring system on both sides of the cabinet. There is a lack of rigid connection and force transmission mechanism between the buffer units, which makes it difficult to effectively disperse the impact load in the cabinet frame. It is easy to form stress concentration in local areas, and it is still easy to cause structural deformation under long-term use. For impacts from the side, especially rigid impacts to the entire side of the cabinet, there is a lack of systematic reinforcement and energy absorption structure. The side impact resistance needs to be improved. Under impact, the cabinet door is prone to displacement from the cabinet due to vibration or deformation. It is difficult to maintain stable closure by relying solely on conventional hinges and locks, which may lead to the cabinet door opening accidentally. If there are multiple buffer structures on the switch cabinet, they need to be inspected one by one during later debugging, which is troublesome for later maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent, shock-resistant low-voltage switchgear for power grids to address the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A smart, impact-resistant low-voltage switchgear for power grids includes a cabinet body and a cabinet door hinged to the front surface of the cabinet body. It also includes a pair of protective frames installed on both sides of the cabinet body. Multiple horizontal beams are vertically distributed within the protective frames, and connecting components are symmetrically installed on the inner sides of the beams. Multiple fastening brackets, fixed to each connecting component, are installed at the inner corners of the cabinet body. A buffer side plate is movably installed within the protective frames, and an elastic limiting rod penetrating the connecting components is fixedly connected to the inner side of the buffer side plate. A fastening fixing component penetrating the cabinet body is fixedly connected to the fastening bracket. A positioning hole matching the fastening fixing component is provided on the inner side of the cabinet door. A reinforcement and debugging bracket is installed on the back of the pair of protective frames, and a diagonal brace that abuts against the reinforcement and debugging bracket is fixedly connected to the inner side of the buffer side plate.

[0008] Preferably, the height of the protective frame is equal to the height of the cabinet, and a heat dissipation cavity connected to the cabinet is formed inside the protective frame, and heat dissipation grooves are provided on both sides of the protective frame.

[0009] Preferably, the fastening bracket is L-shaped, with its outer side fitting against the inner wall of the cabinet. One side of the fastening bracket has a through hole adapted to the connecting kit, and the connecting kit passes through the through hole and is fixedly connected to the fastening bracket.

[0010] Preferably, the connecting kit includes a sleeve fixed to the crossbeam, with one end of the sleeve penetrating through a through hole and fitted with a fastening nut inside the cabinet.

[0011] Preferably, the elastic limiting rod includes an insert rod with one end fixed to the inner side of the buffer side plate, the other end of the insert rod passing through a sleeve, and a buffer spring being sleeved on the insert rod. The two ends of the buffer spring abut against the buffer side plate and the cabinet side wall, respectively.

[0012] Preferably, a heat dissipation mesh is installed on the front surface of the cabinet below the cabinet door, multiple heat dissipation holes are installed on the cabinet door, and an anti-tensile rod is horizontally installed on the inner side of the cabinet door below the distribution area of ​​the heat dissipation holes.

[0013] Preferably, the reinforced debugging frame includes multiple horizontal bars placed on the back of the cabinet. The height of the horizontal bars is the same as the height of the crossbeam, and a pair of handles are vertically installed between the multiple horizontal bars. Each end of the horizontal bar is fixedly connected to a snap-fit ​​hook. The protective frame has a through groove for the snap-fit ​​hook to pass through. The inner wall of the snap-fit ​​hook has an inclined groove that contacts the top surface of the inclined support frame, and one end of the inclined support frame is fixedly connected to a limiting block that contacts the side of the snap-fit ​​hook.

[0014] Preferably, a reinforcing frame is fixedly connected to the inner side of the cabinet door, a buffer pad is nested on the front surface of the cabinet, the outer side of the buffer pad contacts the inner side of the reinforcing frame, the two ends of the tensile rod are fixed to the cabinet door and the reinforcing frame respectively, and the positioning hole is opened on the reinforcing frame.

[0015] Preferably, an installation beam is installed inside the cabinet, and multiple components are installed on the installation beam. Supporting bases are fixedly connected to both sides of the bottom of the inner wall of the cabinet. Multiple heat dissipation fins are fixedly connected to the top of the supporting bases. The bottom of the installation beam is inserted between two adjacent heat dissipation fins.

[0016] Preferably, fasteners are installed on both sides of the mounting beam, and multiple mounting holes adapted to the fasteners are horizontally distributed on the crossbeam.

[0017] In the above technical solution, a distributed force-bearing frame is constructed by adding multiple crossbeams and connecting kits inside a pair of protective frames and achieving multi-point rigid connection with the fastening frame inside the cabinet. The buffer side plate inside the protective frame is connected to the cabinet through elastic limiting rods and connected to the reinforcement and debugging frame on the back through diagonal bracing, forming an anti-impact mechanism that integrates diagonal support and buffering. At the same time, by utilizing the cooperation between the fastening positioning component and the cabinet door positioning hole, the cabinet door and the cabinet are instantly locked when an impact occurs. This invention effectively enhances the overall rigidity of the cabinet, the side impact resistance performance, and the structural synergy, significantly improving the stability and safety of the switchgear in complex impact environments. In addition, the reinforcement and debugging frame can be pressed down to push the buffer side plate inward, thereby quickly determining whether the buffer stroke of the two buffer side plates is normal, making maintenance and repair convenient.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0019] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of an intelligent impact-resistant low-voltage switchgear for power grids according to the present invention.

[0022] Figure 2 This is a schematic diagram of the internal overall structure of an intelligent impact-resistant low-voltage switchgear for power grids according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of an intelligent shock-resistant low-voltage switchgear for power grids according to the present invention.

[0024] Figure 4This is a rear view of an intelligent impact-resistant low-voltage switchgear for power grids according to the present invention.

[0025] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A;

[0026] Figure 6 This is a schematic diagram showing the connection between the buffer side plate and the protective frame in an intelligent impact-resistant low-voltage switchgear for power grids according to the present invention.

[0027] Figure 7 This is a schematic diagram of the buffer side plate and elastic limiting rod in an intelligent impact-resistant low-voltage switchgear of the power grid according to the present invention;

[0028] Figure 8 This is a schematic diagram of the reinforced debugging frame in an intelligent impact-resistant low-voltage switchgear of the power grid according to the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Cabinet body; 11. Heat dissipation mesh; 12. Buffer pad; 13. Support frame; 14. Heat dissipation fins; 15. Heat dissipation window; 2. Cabinet door; 21. Positioning hole; 22. Heat dissipation hole; 23. Tensile bar; 24. Reinforcing frame; 3. Protective frame; 31. Crossbeam; 32. Heat dissipation cavity; 33. Heat dissipation groove; 34. Through groove; 35. Mounting hole; 4. Connecting kit; 41. Sleeve; 42. Fastening nut; 5. Fastening frame; 51. Fastening positioning component; 52. Through hole; 6. Buffer side plate; 61. Diagonal brace; 62. Limiting block; 7. Elastic limiting rod; 71. Insert rod; 72. Buffer spring; 8. Reinforcing and debugging frame; 81. Crossbar; 82. Handle; 83. Snap-on hook; 84. Diagonal groove; 9. Mounting beam frame; 91. Components; 92. Fasteners. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0032] Please see Figure 1-8This invention provides an intelligent impact-resistant low-voltage switchgear for power grids, comprising a cabinet body 1 and a cabinet door 2 hinged to the front surface of the cabinet body 1, and a pair of protective frames 3 respectively installed on both sides of the cabinet body 1. Multiple horizontal beams 31 are vertically distributed within the protective frames 3, and connecting components 4 are symmetrically installed on the inner side of the horizontal beams 31. Multiple fastening frames 5, fixed to each connecting component 4, are installed at the inner corner of the cabinet body 1. A buffer side plate 6 is movably installed within the protective frame 3, and an elastic limiting rod 7 penetrating the connecting component 4 is fixedly connected to the inner side of the buffer side plate 6. A fastening fixing component 51 penetrating the cabinet body 1 is fixedly connected to the fastening frame 5. A positioning hole 21 matching the fastening fixing component 51 is provided on the inner side of the cabinet door 2. A reinforcement and debugging frame 8 is installed on the back of the pair of protective frames 3, and a diagonal brace 61 that is inclined and abuts against the reinforcement and debugging frame 8 is fixedly connected to the inner side of the buffer side plate 6.

[0033] Specifically, the front surface of cabinet 1 is hinged with cabinet door 2 to enclose the interior space of cabinet 1. A protective frame 3 is fixedly installed on each of the outer sides of cabinet 1. Each protective frame 3 is a three-dimensional frame structure with multiple horizontal beams 31 vertically spaced inside, forming multiple horizontal reinforcing layers within the protective frame 3. A pair of connecting components 4 are symmetrically installed on the side of each horizontal beam 31 closest to cabinet 1. Multiple fastening brackets 5, corresponding to the positions of each horizontal beam 31, are located at the vertical corners inside cabinet 1. Each connecting component 4 is rigidly connected to its corresponding fastening bracket 5, thus firmly combining the protective frames 3 on both sides with cabinet 1 into a single unit. This multi-point distributed connection ensures that cabinet 1... An extended, highly rigid distributed load-bearing frame is constructed on both sides, which greatly enhances the overall structural strength and deformation resistance of the cabinet 1. A buffer side plate 6 is movably installed in each protective frame 3. Multiple elastic limiting rods 7 are fixedly connected to the side of the buffer side plate 6 closest to the side wall of the cabinet 1. These elastic limiting rods 7 extend horizontally inward and pass through the through holes 52 on the protective frame 3 and the connecting kits 4 on the crossbeam 31 in sequence, so that the buffer side plate 6 can be translated a certain distance. At the same time, an outward restoring force is applied by the elastic element on the elastic limiting rod 7. When an external impact force acts on one side of the protective frame 3 or the buffer side plate 6, the impact force first pushes the buffer side plate 6 to move towards the cabinet 1. The movement of the buffer side plate 6 compresses the elastic element inside the elastic limiting rod 7, converting some of the impact kinetic energy into elastic potential energy, thus playing a preliminary buffering and energy absorption role. A fastening fixing member 51 is also fixedly connected to the fastening frame 5. This fastening fixing member 51 extends outward through the cabinet body 1. A positioning hole 21 matching the position of the fastening fixing member 51 is provided on the inner edge of the cabinet door 2. When the cabinet door 2 is closed, the extended fastening fixing member 51 inserts into the positioning hole 21 of the cabinet door 2, thereby achieving immediate locking between the cabinet door 2 and the cabinet body 1, preventing the cabinet door 2 from being shaken open during an impact. A reinforcement and adjustment frame 8 is installed on the back of the pair of protective frames 3. Diagonal braces are also fixedly connected to the inner side of each buffer side plate 6. The frame 61, with its diagonal bracing extending upwards towards the cabinet 1, has its top surface moving into contact with a specific position on the reinforcing and adjusting frame 8. Together, they form an integrated anti-impact mechanism combining diagonal support and buffering. During routine maintenance, the reinforcing and adjusting frame 8 can be pressed down. This pressing action forces the diagonal bracing frames 61 on both sides to retract inwards along their tilt angle, thereby simultaneously driving the buffer side plates 6 on both sides to overcome the elastic force of the elastic limit rods 7 and push inwards. Maintenance personnel can visually observe and compare whether the movement of the buffer side plates 6 on both sides is smooth, symmetrical, and whether the reset is normal, thus quickly judging the performance status of the buffer mechanism. The key buffering function can be checked without disassembly, greatly facilitating maintenance and repair work.

[0034] Compared with the prior art, the embodiments of the present invention construct a distributed force-bearing frame by adding multiple crossbeams 31 and connecting kits 4 inside a pair of protective frames 3 and achieving multi-point rigid connection with the fastening frame 5 inside the cabinet 1. The buffer side plate 6 inside the protective frame 3 is connected to the cabinet 1 through elastic limiting rods 7 and connected to the reinforcement and debugging frame 8 on the back through diagonal bracing 61, forming an anti-impact mechanism that integrates diagonal support and buffering. At the same time, by utilizing the cooperation between the fastening positioning piece 51 and the positioning hole 21 of the cabinet door 2, the cabinet door 2 and the cabinet 1 are instantly locked when an impact occurs. The present invention effectively enhances the overall rigidity of the cabinet 1, the side impact resistance performance and structural synergy, and significantly improves the stability and safety of the switch cabinet in complex impact environments. In addition, the reinforcement and debugging frame 8 can be pressed down to push the buffer side plate 6 inward, thereby quickly determining whether the buffer stroke of the two buffer side plates 6 is normal, which is convenient for maintenance and repair.

[0035] In a further embodiment of the present invention, the height of the protective frame 3 is equal to the height of the cabinet 1, and a heat dissipation cavity 32 connected to the cabinet 1 is formed inside the protective frame 3. Heat dissipation windows 15 are provided on both sides of the cabinet 1, and heat dissipation grooves 33 are provided on both sides of the protective frame 3. Specifically, when the equipment generates heat during normal operation, the hot air inside the cabinet 1 decreases in density due to the increased temperature, forming an upward airflow. Since the heat dissipation cavity 32 is connected to the inside of the cabinet 1 through the heat dissipation windows 15, and the heat dissipation grooves 33 are provided on both sides of the protective frame 3, a natural air circulation channel is formed. The presence of the heat dissipation cavity 32 increases the effective heat dissipation surface area and improves heat dissipation efficiency. This design achieves effective passive heat dissipation using the structure of the protective frame 3 itself without affecting the overall protective rigidity, ensuring the thermal stability of the switchgear during long-term operation.

[0036] In a further embodiment of the present invention, the fastening frame 5 is L-shaped and consists of two mutually perpendicular side plates. Its outer side is in contact with the inner wall of the cabinet 1. One side of the fastening frame 5 has a through hole 52 adapted to the connecting kit 4. The connecting kit 4 passes through the through hole 52 and is fixedly connected to the fastening frame 5. Specifically, this L-shaped structure of the fastening frame 5 allows it to simultaneously fit with the adjacent inner walls of the cabinet 1, realizing the effective transmission and dispersion of the connection force in two directions. When the impact force is transmitted to the distributed force-bearing frame through the buffer side plate 6 and the diagonal brace 61, the L-shaped fastening frame 5 plays a key role as a critical connection node. Its L-shaped structure provides a larger contact area and connection strength with the inner wall of the cabinet 1, so that the concentrated force from the connecting kit 4 can be more evenly and effectively dispersed to the side wall of the cabinet 1 and the adjacent frame structure. The impact force is transmitted to the front panel and side plate of the cabinet 1 through the two perpendicular side plates of the fastening frame 5, respectively, avoiding excessive stress concentration on a single plate surface and significantly reducing the risk of local deformation or weld tearing of the cabinet 1.

[0037] In a further embodiment of the present invention, the connecting kit 4 includes a sleeve 41 fixed to the crossbeam 31. One end of the sleeve 41 passes through the through hole 52 and is fitted with a fastening nut 42 inside the cabinet 1. Specifically, the sleeve 41 in the connecting kit 4 is made of high-strength metal material, and its outer diameter is matched with the inner diameter of the through hole 52 on the fastening frame 5 to ensure a tight connection without loosening. During installation, one end of the sleeve 41 is pre-fixed and welded to a designated position on the crossbeam 31, and then the other end of the sleeve 41 is passed through the through hole 52 of the fastening frame 5 and extends into the cabinet 1. Inside the cabinet 1, the fastening nut 42 is threaded to the end of the sleeve 41, and the fastening nut 42 is tightened with a special tool, thereby firmly fixing the connecting kit 4 and the fastening frame 5 together. This connection method is not only simple and reliable in structure, but also easy to disassemble and replace, providing great convenience for subsequent maintenance and repair work. At the same time, since a rigid connection is adopted between the connecting kit 4 and the fastening frame 5, the overall rigidity and stability of the distributed force-bearing frame are further improved.

[0038] In a further embodiment of the present invention, the elastic limiting rod 7 includes an insert rod 71 with one end fixed to the inner side of the buffer side plate 6, and the other end of the insert rod 71 passing through the sleeve 41. A buffer spring 72 is sleeved on the insert rod 71, and the two ends of the buffer spring 72 abut against the buffer side plate 6 and the side wall of the cabinet 1, respectively. Specifically, in its natural state, the buffer spring 72 is in a pre-compressed or free state, providing an outward elastic support force for the buffer side plate 6. When subjected to external impact, the buffer side plate 6 will overcome the elastic force of the buffer spring 72 and move towards the cabinet 1. During this process, the buffer spring 72 is further compressed, converting the impact kinetic energy into elastic potential energy, thus playing a role in buffering and absorbing energy. After the impact, under the elastic restoring force of the buffer spring 72, the buffer side plate 6 can automatically reset and return to its initial position. The buffer side plate 6 can move flexibly within a certain range, effectively absorbing and dispersing the impact force, while ensuring the stability and reliability of the structure. The cooperation between the insert rod 71 and the sleeve 41 in the elastic limiting rod 7 can also play a guiding and limiting role, ensuring that the buffer side plate 6 will not deviate or get stuck during the movement, thus ensuring the normal operation of the buffer mechanism. Part of the impact force is absorbed by the spring buffer, and the other part is transmitted and dispersed by the diagonal brace 61, forming a composite impact resistance mechanism that combines flexible buffering and rigid guidance.

[0039] In a further embodiment of the present invention, a heat dissipation mesh 11 is installed on the front surface of the cabinet 1 below the cabinet door 2, and multiple heat dissipation holes 22 are installed on the cabinet door 2. A tensile rod 23 is horizontally installed on the inner side of the cabinet door 2 below the distribution area of ​​the heat dissipation holes 22. Specifically, the heat dissipation holes 22 on the cabinet door 2 and the heat dissipation mesh 11 at the lower front of the cabinet 1 together constitute the key ventilation channel at the front of the cabinet 1. External cold air can enter the interior of the cabinet 1 from the heat dissipation mesh 11 at the lower part of the cabinet 1 and the heat dissipation holes 22 on the cabinet door 2. After absorbing the heat generated by the electrical components, the incoming air forms a hot airflow. This hot airflow can move upward and work in conjunction with the heat dissipation cavity 32. Some of the hot air flows into the side heat dissipation cavity 32 connected to the cabinet 1. After further heat dissipation through convection and radiation in the cavity, it is finally discharged from the heat dissipation grooves 33 on both sides of the protective frame 3, forming a multi-path heat dissipation air duct. The tensile rod 23 forms a horizontal structural reinforcement.

[0040] In a further embodiment of the present invention, the reinforced debugging frame 8 includes multiple horizontal bars 81 placed horizontally on the back of the cabinet 1. The height of the horizontal bars 81 is the same as the height of the crossbeam 31, and a pair of handles 82 are vertically installed between the multiple horizontal bars 81. Each end of the horizontal bar 81 is fixedly connected to a snap-fit ​​hook 83. The protective frame 3 has a through groove 34 for the snap-fit ​​hook 83 to pass through. The inner wall of the snap-fit ​​hook 83 has an inclined groove 84 that contacts the top surface of the inclined support frame 61. One end of the inclined support frame 61 is fixedly connected to a limiting block 62 that contacts the side of the snap-fit ​​hook 83. Specifically, the reinforced debugging frame 8 is horizontally fixed to the back of the cabinet 1 by multiple horizontal bars 81. The height of the horizontal bars 81 is consistent with the crossbeam 31 inside the protective frame 3, ensuring the symmetry and balanced force of the overall structure. A pair of handles 82 are vertically installed between the horizontal bars 81, facilitating the operator's grip and application of downward pressure. The two ends of the crossbar 81 are connected to the protective frame 3 through the snap hooks 83. After the snap hooks 83 pass through the through slots 34 on the protective frame 3, the inclined slots 84 on its inner wall form inclined contact with the top surface of the inclined support 61. This design allows the downward pressing action to be accurately converted into the horizontal displacement of the inclined support 61. The limiting block 62 at one end of the diagonal brace 61 fits tightly against the side of the snap-fit ​​hook 83, which not only prevents the diagonal brace 61 from shifting under force, but also ensures that the buffer side plate 6 extends directly out of the protective frame 3 under the force of the buffer spring 72 through the rigid contact of the limiting block 62, thus ensuring the neat appearance of the entire switch cabinet. When the operator presses down on the reinforcing and debugging frame 8 through the handle 82, the inclined groove 84 of the snap-fit ​​hook 83 will push the diagonal brace 61 to retract inward along the inclined angle, causing the buffer side plate 6 to move synchronously towards the cabinet 1. At this time, the buffer spring 72 in the elastic limiting rod 7 is compressed, forming an observable displacement stroke. By observing the synchronous movement and reset of the buffer side plates 6 on both sides through the ventilation slot, the working status of the buffer mechanism can be quickly determined. This design does not require disassembling the cabinet 1 structure, which significantly improves maintenance efficiency.

[0041] In a further embodiment of the present invention, a reinforcing frame 24 is fixedly connected to the inner side of the cabinet door 2, and a buffer strip 12 is nested on the front surface of the cabinet body 1. The outer side of the buffer strip 12 contacts the inner side of the reinforcing frame 24. The two ends of the tensile rod 23 are fixed to the cabinet door 2 and the reinforcing frame 24 respectively, and the positioning hole 21 is opened on the reinforcing frame 24. Specifically, the reinforcing frame 24 is made of high-strength metal material and fits tightly against the inner side of the cabinet door 2, providing additional structural support for the cabinet door 2 and enhancing the overall rigidity and deformation resistance of the cabinet door 2. When the cabinet door 2 is subjected to external impact, the reinforcing frame 24 can effectively disperse the impact force and prevent the cabinet door 2 from being locally deformed or damaged. The buffer strip 12 nested on the front surface of the cabinet body 1 is made of elastic rubber. Made of materials with good cushioning performance, when the cabinet door 2 is closed, the outer side of the cushioning pad 12 contacts the inner side of the reinforcing frame 24, which can absorb and disperse the impact force between the cabinet door 2 and the cabinet body 1, reduce the noise and vibration caused by the collision, and protect the surface of the cabinet door 2 and the cabinet body 1 from damage. The two ends of the anti-tension rod 23 are fixed to the cabinet door 2 and the reinforcing frame 24 respectively, forming a transverse structural reinforcement, which further improves the structural stability of the cabinet door 2. When the cabinet door 2 is closed, the fastening fixing piece 51 is inserted into the positioning hole 21 to realize the instant locking of the cabinet door 2 and the cabinet body 1. The presence of the reinforcing frame 24 makes this locking more stable and reliable, effectively preventing the cabinet door 2 from being shaken open when an impact occurs.

[0042] In a further embodiment of the present invention, a mounting beam 9 is installed inside the cabinet 1, and multiple components 91 are mounted on the mounting beam 9. Supporting bases 13 are fixedly connected to both sides of the bottom of the inner wall of the cabinet 1, and multiple heat dissipation fins 14 are fixedly connected to the top of the supporting bases 13. The bottom of the mounting beam 9 is inserted between two adjacent heat dissipation fins 14. Specifically, the mounting beam 9 serves as the core support structure inside the cabinet 1, ensuring structural stability when bearing the weight of the components 91 and external impacts. The multiple components 91 are installed in an orderly manner according to functional zones. On the mounting beam 9, each component 91 is equipped with a dedicated mounting plate at its bottom, which is precisely fixed to the pre-drilled holes on the mounting beam 9 with bolts. This ensures both the stability of the installation and facilitates subsequent disassembly and maintenance. The support base 13 on both sides of the bottom of the inner wall of the cabinet 1 is thickened, and multiple heat dissipation fins 14 are evenly distributed on their tops in an array. The surface of the fins is specially treated to improve heat conduction efficiency. The bottom of the mounting beam 9 is inserted into the gap between adjacent heat dissipation fins 14. This design not only utilizes the heat dissipation fins 14 to form The natural airflow accelerates air circulation and also rapidly conducts the heat generated by the components 91 to the heat dissipation fins 14 through direct metal-to-metal contact. The heat dissipation fins 14 then disperse the heat into the surrounding air. When the equipment is running, the air inside the cabinet 1 is heated and rises to form convection. The gaps between the heat dissipation fins 14 become the main channels for airflow. The heat is discharged with the airflow through the heat dissipation windows 15 on both sides of the cabinet 1 and the heat dissipation grooves 33 of the protective frame 3, forming a complete heat dissipation circulation system. This structural layout not only ensures the installation density of the components 91, but also achieves a balance between efficient heat dissipation and structural strength through the coordinated work of the heat dissipation fins 14 and the mounting beam 9, ensuring the stability of the switchgear under long-term high-load operation. The mounting beam 9 is inserted into the limiting area formed between the two fins, which also prevents the mounting beam 9 from shifting back and forth when subjected to external impact, further improving the impact resistance of the overall structure. The heat dissipation fins 14 and the supporting base 13 adopt an integrated molding process, which ensures the structural strength of the connection and reduces the risk of loosening caused by thermal expansion and contraction or external impact.

[0043] In a further embodiment of the present invention, fasteners 92 are installed on both sides of the mounting beam 9, and multiple mounting holes 35 adapted to the fasteners 92 are horizontally distributed on the crossbeam 31. Specifically, the fasteners 92 installed on both sides of the mounting beam 9 are designed with full consideration of ease of installation and stability. These fasteners 92 are made of high-strength materials and can withstand large tensile and shear forces, ensuring a firm and reliable connection between the mounting beam 9 and the crossbeam 31. The multiple mounting holes 35 horizontally distributed on the crossbeam 31 provide multiple options for the installation of the fasteners 92. The position of the mounting beam 9 can be adjusted according to actual needs to meet the installation requirements of different components 91. During the installation process, the operator only needs to pass the fastener 92 through the corresponding hole on the mounting beam 9, insert it into the mounting hole 35 on the crossbeam 31, and tighten it with a special tool to complete the installation. This installation method is not only simple and quick, but also ensures that the mounting beam 9 will not loosen or shift when subjected to external impact, further improving the overall impact resistance of the switchgear. Meanwhile, the tight fit between the fastener 92 and the mounting hole 35 effectively prevents the connection from loosening due to vibration or thermal expansion and contraction, ensuring the stability of the switchgear during long-term operation.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A smart, impact-resistant low-voltage switchgear for power grids, comprising a cabinet (1) and a cabinet door (2) hinged to the front surface of the cabinet (1), characterized in that, Also includes: A pair of protective frames (3) are installed on both sides of the cabinet (1). Multiple crossbeams (31) are vertically distributed inside the protective frames (3). Connecting kits (4) are symmetrically installed on the inner side of the crossbeams (31). Multiple fastening brackets (5) that are fixed to each connecting kit (4) are installed at the inner corner of the cabinet (1). The buffer side plate (6) is movably installed inside the protective frame (3), and the inner side of the buffer side plate (6) is fixedly connected to the elastic limiting rod (7) of the through connecting kit (4). The fastening frame (5) is fixedly connected to the fastening fixing member (51) that penetrates the cabinet (1). The inner side of the cabinet door (2) is provided with a positioning hole (21) that matches the fastening fixing member (51). The reinforcement and debugging frame (8) is installed on the back of the pair of protective frames (3), and the inner side of the buffer side plate (6) is fixedly connected to the inclined support frame (61) that is inclined against the reinforcement and debugging frame (8).

2. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 1, characterized in that, The height of the protective frame (3) is equal to the height of the cabinet (1), and a heat dissipation cavity (32) connected to the cabinet (1) is formed inside the protective frame (3). Heat dissipation grooves (33) are provided on both sides of the protective frame (3).

3. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 1, characterized in that, The fastening bracket (5) is L-shaped, and its outer side is attached to the inner wall of the cabinet (1). One side of the fastening bracket (5) is provided with a through hole (52) that is compatible with the connecting kit (4). The connecting kit (4) passes through the through hole (52) and is fixedly connected to the fastening bracket (5).

4. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 3, characterized in that, The connecting kit (4) includes a sleeve (41) fixed to the crossbeam (31), one end of which passes through a through hole (52) and is fitted with a fastening nut (42) inside the cabinet (1).

5. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 4, characterized in that, The elastic limiting rod (7) includes a plug rod (71) with one end fixed to the inner side of the buffer side plate (6), the other end of the plug rod (71) passing through the sleeve (41), and a buffer spring (72) sleeved on the plug rod (71). The two ends of the buffer spring (72) abut against the buffer side plate (6) and the side wall of the cabinet (1) respectively.

6. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 1, characterized in that, A heat dissipation mesh (11) is installed on the front surface of the cabinet (1) below the cabinet door (2). Multiple heat dissipation holes (22) are installed on the cabinet door (2). A tensile rod (23) is horizontally installed on the inner side of the cabinet door (2) below the distribution area of ​​the heat dissipation holes (22).

7. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 1, characterized in that, The reinforced debugging frame (8) includes multiple horizontal bars (81) placed horizontally on the back of the cabinet (1). The height of the horizontal bars (81) is the same as the height of the crossbeam (31). A pair of handles (82) are vertically installed between the multiple horizontal bars (81). Both ends of the horizontal bars (81) are fixedly connected to snap hooks (83). The protective frame (3) has a through groove (34) for the snap hooks (83) to pass through. The inner wall of the snap hooks (83) has an inclined groove (84) that contacts the top surface of the inclined support frame (61). One end of the inclined support frame (61) is fixedly connected to a limiting block (62) that contacts the side of the snap hooks (83).

8. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 6, characterized in that, A reinforcing frame (24) is fixedly connected to the inside of the cabinet door (2). A buffer strip (12) is nested on the front surface of the cabinet body (1). The outer side of the buffer strip (12) is in contact with the inner side of the reinforcing frame (24). The two ends of the anti-tensile rod (23) are fixed to the cabinet door (2) and the reinforcing frame (24) respectively. The positioning hole (21) is opened on the reinforcing frame (24).

9. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 1, characterized in that, The cabinet (1) is equipped with an installation beam frame (9), on which multiple components (91) are installed. Supporting base frames (13) are fixedly connected to both sides of the bottom of the inner wall of the cabinet (1). Multiple heat dissipation fins (14) are fixedly connected to the top of the supporting base frame (13). The bottom of the installation beam frame (9) is inserted between two adjacent heat dissipation fins (14).

10. The intelligent impact-resistant low-voltage switchgear for power grids according to claim 9, characterized in that, Fasteners (92) are installed on both sides of the mounting beam (9), and multiple mounting holes (35) that are compatible with the fasteners (92) are horizontally distributed on the crossbeam (31).

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