A switch cabinet with a sensing interlocking function

Abstract

This invention discloses a switchgear with a sensing and interlocking function, belonging to the field of switchgear. It includes a switchgear body with a hinged door. At least three sets of through-wall bushings are installed through the side of the switchgear body. Busbars are bolted to the through-wall bushings, and connecting busbars are bolted to the ends of the busbars. A surge arrester is connected to one end of the connecting busbar. A mounting bracket is fixed inside the switchgear body. The surge arrester is connected to the mounting bracket via a grounding component. The side of the busbars is elastically buffered by a buffer assembly and an interlocking assembly. This switchgear with a sensing and interlocking function absorbs the impact of cabinet vibration and load fluctuations through buffer springs one and two, offsetting relative displacement pulling forces, reducing direct pulling on the sensor, and indirectly reducing the tensile stress at the connection between the sensor and the secondary wiring. The fixing assembly provides full-process protection for the secondary wiring through placement, wiring, and guiding units, and is linked with the sensor end for buffering, preventing damage to the secondary wiring from pulling.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and in particular to a switchgear with a sensing and interlocking function. Background Technology

[0002] For example, in the field of live-line interlocking of 10kV high-voltage switchgear, existing technology uses sensors to sense the energized state of the copper busbar. One end of the sensor is fastened to the 10kV copper busbar through a conductive metal bolt, and the other end is rigidly connected to the mounting components inside the switchgear through a metal bolt. The induced electrical signal is transmitted to the live-line display device via a secondary line. The live-line display device then forcibly interlocks the electromagnetic lock on the switchgear door, thereby achieving safety control that prevents the cabinet door from being opened when the high voltage is energized, ensuring the safety of personnel operation.

[0003] During operation, switchgear generates not only its own mechanical vibration but also cabinet vibration due to power grid load fluctuations. Rigid connections lack vibration buffering capabilities and cannot effectively absorb the stress generated by vibration. Vibration energy is directly transmitted to the internal components of the sensor through rigidity. Long-term vibration can also easily lead to loose bolts, which will further aggravate abnormal contact resistance, and may cause sensor position displacement, fatigue damage to internal components, affect the stability and accuracy of electrical signal sensing, and even cause loose wiring, resulting in decreased sensor sensing accuracy and shortened service life. In addition, it is difficult to precisely control the bolt tightening torque during installation. Too tight a torque will cause deformation and bulging of the copper busbar contact surface, reducing the effective contact area. Too loose a torque will not guarantee the reliability of the connection. Rigid connections themselves lack buffering and compensation capabilities and cannot absorb the vibration impact and thermal deformation stress during equipment operation. Long-term accumulation can easily cause mechanical damage to the sensor or connection parts, ultimately leading to inaccurate signal reception by the live display device and reduced reliability of the electromagnetic lock interlocking function.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a switchgear with a sensing and interlocking function to solve the problems of bolt loosening, sensor damage, difficulty in controlling bolt tightening torque, and lack of buffering in rigid connections caused by vibration during switchgear operation, which affect the reliability of signal and interlocking functions.

[0006] This invention adopts the following technical solution: a switch cabinet with a sensing and interlocking function. It includes a switch cabinet body with a hinged door. An internal frame column is fixedly installed inside the switch cabinet body. At least three sets of through-wall bushings are installed through the side of the switch cabinet body. Busbar copper busbars are bolted to the through-wall bushings. Connecting copper busbars are bolted to the ends of the busbar copper busbars. A surge arrester is connected to the end of the connecting copper busbar furthest from the busbar copper busbar. A mounting bracket is fixedly installed on the inner wall of the switch cabinet body. The surge arrester is reliably connected to the mounting bracket through a grounding component. The side of the busbar copper busbar is elastically buffered and connected to the interlocking component through a buffer assembly.

[0007] Furthermore, the locking assembly includes a mounting plate and a sensor mounted on one side thereof. The sensor has an elastic conductive connector. The mounting plate is fixed to the inner wall of the switch cabinet. The sensor and the mounting plate, and the sensor and the busbar copper busbar form a bidirectional directional elastic buffer structure through the buffer assembly.

[0008] Furthermore, the buffer assembly includes a second bolt that is threadedly connected to the busbar copper busbar through the first fixing unit. The second bolt passes through the busbar copper busbar and the first fixing unit in sequence and is threadedly connected to a nut. A first buffer spring is sleeved on the second bolt, and the two ends of the first buffer spring contact the side of the first fixing unit and the busbar copper busbar, respectively.

[0009] Furthermore, the first fixing unit includes two sets of relatively fitted semi-annular components. The two sets of semi-annular components are fitted together at one end of the sensor. Both ends of the semi-annular components are integrally provided with connecting ends. The connecting ends of the two sets of semi-annular components are connected by a bolt. The two sets of semi-annular components are relatively fitted with a fixing end. The fixing end is movably connected to a nut and elastically abuts against one end of a buffer spring.

[0010] Furthermore, the buffer assembly also includes a bolt three connected to the mounting plate via a second fixing unit. The second fixing unit has a similar structure to the first fixing unit. The second fixing unit has a fixing end one defined as fixing end two (not shown in the figure). The fixing end two is movably connected to the bolt three. Buffer spring two is sleeved on both sides of the bolt three and located at the fixing end two. The two ends of the two sets of buffer spring two are respectively connected to the side of the mounting plate and the side of the bolt three.

[0011] Furthermore, the interlocking assembly also includes a secondary line for transmitting signals and power. One end of the secondary line is connected to a sensor, and the other end is connected to a live display device and an electromagnetic lock, forming a linkage control loop. The live display device is fixed on the switch cabinet, and the electromagnetic lock is fixed on the cabinet door. The signal interaction between the sensor and the two devices is realized through the secondary line.

[0012] Furthermore, the fixing component includes a placement box, in which the secondary wire is elastically supported by a placement unit. The placement unit is fixed with a wire-binding unit for fixing the secondary wire, and multiple sets of guide units are fixed on the secondary wire to guide its arrangement. The guide units are fixed to the inner wall of the switch cabinet.

[0013] Furthermore, the placement unit includes a placement box, which is embedded in the mounting plate. One end of the placement box is open, and extension ends are fixed on both sides of the placement box. A support column is fixed at the bottom of the extension end, and one end of the support column is movably inserted into the mounting plate. A support spring is sleeved on the support column, and both ends of the support spring are connected to the mounting plate and the extension end, respectively.

[0014] Furthermore, the wire harness unit includes three sets of spaced placement plates, the four corners of which are movably connected by a support shaft. A second support spring is coaxially sleeved between adjacent placement plates and between the upper placement plate and the top of the support shaft. The second support spring is correspondingly connected between each mating surface. A wire harness clamp with an opening is fixed on the placement plate, and the wire harness clamp is adapted to engage with the secondary wire.

[0015] Furthermore, the guiding unit includes a base fixed to the inner wall of the switch cabinet, a clamping seat hinged to the base, a buckle block with grooves on both sides at one end of the clamping seat near the base, a card seat with a concave structure fixed at the corresponding end of the base, and buckle balls supported by springs at both ends of the inner wall of the card seat. The buckle balls are adapted to be embedded in the grooves of the buckle blocks to form a positioning lock. A wire-passing groove for secondary wires to pass through is symmetrically opened between the clamping seat and the base.

[0016] The above-mentioned at least one technical solution adopted in this invention can achieve the following beneficial effects:

[0017] A switchgear with sensing and interlocking function can efficiently absorb the impact of cabinet vibration and power load fluctuations through a buffer spring 1 between the sensor and the busbar copper bus, and a symmetrical buffer spring 2 between the sensor and the mounting plate. This also counteracts the relative displacement pulling force between the two, preventing hard collisions and wear between the sensor and the busbar copper bus. Furthermore, the elastic buffering effect of the buffer components weakens the direct pulling force of vibration on the sensor, indirectly reducing the tensile stress at the connection between the sensor and the secondary wiring. Secondly, the fixing components are designed with full-process protection for the secondary wiring: the support spring 1 of the placement unit can elastically buffer the vibration with the cabinet. The impact counteracts the relative pulling between the cable and the placement box; the second support spring of the cable harness unit adapts to the slight deformation of the cable through elastic clamping, avoiding cable pulling and displacement caused by vibration; the directional constraint of the guide unit further restricts cable offset, forming a linkage with the buffer structure at the sensor end, weakening the transmission of vibration pulling from the source, and preventing secondary lines from being pulled and damaged, loosened, or interrupted due to the relative vibration between the sensor and the busbar. At the same time, the dual fixing unit adopts a semi-ring-shaped encircling structure, eliminating the need for destructive processing such as drilling and welding of the sensor, and is compatible with sensors of different diameters, improving adaptability to multiple scenarios. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0019] In the attached diagram:

[0020] Figure 1 This is an overall schematic diagram of a switchgear with a sensing interlocking function according to this application;

[0021] Figure 2 for Figure 1 A partial structural diagram;

[0022] Figure 3 for Figure 1 A partial structural diagram;

[0023] Figure 4 for Figure 3 Enlarged view of point A;

[0024] Figure 5 for Figure 1 Schematic diagram of the intermediate buffer component structure;

[0025] Figure 6 for Figure 1 A partial structural diagram;

[0026] Figure 7 for Figure 6 Enlarged view of point B;

[0027] Figure 8 for Figure 1 Schematic diagram of the fixed component structure;

[0028] Figure 9 for Figure 8 Enlarged view of point C;

[0029] Figure 10 for Figure 1 Schematic diagram of the mid-beam unit structure;

[0030] Figure label:

[0031] 1. Switch cabinet; 11. Cabinet door; 12. Frame column; 13. Through-wall bushing; 14. Busbar copper busbar; 15. Connecting copper busbar; 16. Surge arrester; 17. Mounting bracket; 18. Grounding components;

[0032] 2. Locking assembly; 21. Mounting plate; 22. Sensor; 221. Flexible conductive connector; 23. Secondary line; 24. Electromagnetic lock; 25. Live display device;

[0033] 3. Buffer assembly; 31. Semi-circular component; 32. Connecting end; 33. Bolt 1; 34. Bolt 2; 35. Buffer spring 1; 36. Nut; 37. Second fixing unit; 38. Bolt 3; 39. Buffer spring 2; 311. Fixing end 1;

[0034] 4. Fixing component; 41. Placement box; 42. Extension end; 43. Support column; 44. Support spring one; 45. Placement unit; 451. Placement plate; 452. Support shaft; 453. Second support spring; 454. Wire harness clamp; 47. Base; 48. Clamping seat; 49. Fastener block; 410. Card holder; 412. Wire passage. Detailed Implementation

[0035] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0036] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Reference Figures 1-4As shown, the present invention provides a switch cabinet with sensing and interlocking function, including a switch cabinet body 1, a cabinet door 11 hinged to the switch cabinet body 1, a frame column 12 fixed inside the switch cabinet body 1, at least three sets of through-wall bushings 13 installed through the side of the switch cabinet body 1, a busbar copper busbar 14 connected to the through-wall bushing 13 by bolts, a connecting copper busbar 15 connected to the end of the busbar copper busbar 14 by bolts, a surge arrester 16 connected to the end of the connecting copper busbar 15 away from the busbar copper busbar 14, a mounting bracket 17 fixedly installed on the inner wall of the switch cabinet body 1, the surge arrester 16 being reliably connected to the mounting bracket 17 through a grounding component 18, and the side of the busbar copper busbar 14 being elastically buffered connected to the interlocking component 2 through a buffer component 3.

[0038] The locking component 2 in this invention is mainly used to realize bidirectional elastic buffering and sensing locking between the sensor 22 and the bus copper bus 14. As a preferred locking component 2, it includes a mounting plate 21 and a sensor 22 mounted on one side thereon. The terminal of the sensor 22 is connected to an elastic conductive connector 221. The mounting plate 21 is fixed to the inner wall of the switch cabinet 1. The sensor 22 and the mounting plate 21, and the sensor 22 and the bus copper bus 14 form a bidirectional directional elastic buffering structure through the buffer component 3.

[0039] In use, the elastic conductive connector 221 can be tightly attached to the busbar copper bus 14 to achieve stable conductivity. The current is transmitted through the busbar copper bus 14 to the elastic conductive connector 221, and then through the elastic conductive connector 221 to the internal circuit of the sensor 22, thereby achieving electrical conduction. The buffer component 3 absorbs the vibration and impact between the two simultaneously, avoiding poor conductivity or component damage caused by hard contact. At the same time, the directional buffer structure ensures the stability of the sensor 22's detection posture, ensuring accurate transmission of the sensing signal to achieve reliable interlocking control. It does not require additional conductive connection mechanisms, and can take into account both buffer protection and interlocking accuracy, fully meeting the requirements of switchgear for conductive reliability, buffer stability, and sensing interlocking accuracy.

[0040] Reference Figure 3 and Figure 5 As shown, in order to achieve elastic buffering between the busbar copper bus 14 and the locking assembly 2, the buffer assembly 3 includes a bolt 2 34 that is threadedly connected to the busbar copper bus 14 through the first fixing unit. The bolt 2 34 passes through the busbar copper bus 14 and the first fixing unit in sequence and is threadedly connected to a nut 36. A buffer spring 1 35 is sleeved on the bolt 2 34. The two ends of the buffer spring 1 35 contact the first fixing unit and the side of the busbar copper bus 14 respectively.

[0041] When assembled and used, the buffer spring 35 can absorb the vibration and impact between the busbar copper bus 14 and the locking component 2 through its own elastic deformation, avoiding structural wear or loosening of the connection caused by hard collision between the two. At the same time, the threaded locking effect of the bolt 34 and the nut 36 ensures the stability of the assembly. It can achieve elastic protection efficiently without the need for a complex buffer structure design.

[0042] To achieve a reliable connection between the sensor 22 and the buffer assembly 3 and to facilitate the assembly of the elastic buffer structure, the first fixing unit includes two sets of relatively close semi-annular parts 31. The two sets of semi-annular parts 31 can be fitted together at one end of the sensor 22. Both ends of the semi-annular parts 31 are integrally provided with connecting ends 32. The connecting ends 32 of the two sets of semi-annular parts 31 are fastened together by bolts 33. The two sets of semi-annular parts 31 are provided with fixed ends 311. The fixed ends 311 are movably connected with nuts 36 and elastically abut against one end of buffer spring 35.

[0043] During assembly, simply fasten the two sets of semi-annular parts 31 symmetrically to the end of the sensor 22 and quickly lock them with bolts 33 to complete the connection with the sensor 22. Subsequently, directly assemble with the buffer spring 35 and nut 36 through the fixed end 311, without the need for complex processing such as drilling and welding of the sensor 22. At the same time, thanks to the adjustability of the semi-annular structure, it can be compatible with sensors 22 of different diameters, and the wrap-around fit design can avoid stress concentration at the connection point, ensuring that the elastic deformation force of the buffer spring 35 is evenly transmitted to the sensor 22. This achieves both rapid assembly and multi-specification adaptation, while ensuring the elastic buffer function.

[0044] To achieve bidirectional elastic buffering between sensor 22 and mounting plate 21, ensure balanced transmission of buffering force and structural assembly compatibility, buffer assembly 3 also includes bolt 38 connected to mounting plate 21 via second fixing unit 37. The second fixing unit 37 has a similar structure to the first fixing unit. The fixing end 311 of the second fixing unit 37 is defined as fixing end 2 (not shown in the figure). Fixing end 2 is movably connected to bolt 38. Buffer spring 39 is sleeved on both sides of bolt 38 and on both sides of fixing end 2. The two ends of the two sets of buffer spring 39 are connected to the side of mounting plate 21 and the side of bolt 38, respectively.

[0045] When assembled and used, the structural similarity between the second fixing unit 37 and the first fixing unit can reduce the difficulty of assembly and adaptation. There is no need to adapt to fixing structures of different specifications. The buffer springs 39 arranged symmetrically on both sides can absorb the bidirectional vibration impact between the sensor 22 and the mounting plate 21 through bidirectional elastic deformation, avoiding force imbalance or component displacement caused by unidirectional buffering. This ensures the stability of the connection structure and makes the bidirectional buffering effect more balanced and reliable.

[0046] Reference Figures 1-3As shown, to achieve real-time signal interaction between the sensor 22, the live display device 25, and the electromagnetic lock 24, and thus achieve precise linkage and interlocking function, avoiding safety hazards caused by signal transmission interruption or linkage delay, the interlocking component 2 also includes a secondary line 23 that combines signal transmission and power supply functions. One end of the secondary line 23 is stably connected to the sensor 22, and the other end is connected to the live display device 25 and the electromagnetic lock 24 respectively, forming a closed-loop linkage control circuit. The live display device 25 is fixed in a prominent position on the switch cabinet 1, and the electromagnetic lock 24 is fixed at the locking adapter of the cabinet door 11. Through the efficient conduction of the secondary line 23, the sensor 22 can feed back the detection signal to the live display device 25 and the electromagnetic lock 24 in real time, while providing working power to the electromagnetic lock 24, ensuring the linkage logic of locking when energized and unlocking when de-energized. This ensures both the stability and timeliness of signal transmission, and the reliable effectiveness of the interlocking function.

[0047] Reference Figures 6-8 As shown, to achieve elastic support, orderly fixation, and directional guidance for the secondary cable 23, and to avoid signal transmission failures caused by messy cable tangling, vibration wear, or layout misalignment, a fixing component 4 is fixed inside the switch cabinet 1. The fixing component 4 includes a placement box 41 adapted to accommodate the secondary cable 23. Inside the placement box 41, a placement unit 45 provides elastic support for the secondary cable 23, which can buffer the impact of cabinet vibration on the cable. A cable bundling unit is fixed on the placement unit 45, which can neatly clamp and fix the secondary cable 23 to prevent the cable from loosening and shifting. At the same time, multiple sets of guiding units are installed on the secondary cable 23. The guiding unit is fixed to the inner wall of the switch cabinet 1 and can directionally guide the cable route to ensure that the cable is arranged in an orderly manner and the path is orderly.

[0048] In use, the elastic support structure of the placement unit 45 can adapt to the slight deformation of the secondary line 23, the cable bundling unit realizes the centralized fixation of the cable, and the guide unit standardizes the extension path of the cable. The three work together to avoid the inconvenience of maintenance caused by messy cable tangles, reduce cable wear caused by vibration, and ensure the stability of signal transmission of the secondary line 23.

[0049] To achieve flexible support and stable placement of the secondary cable 23, avoid cable displacement or wear caused by cabinet vibration, and ensure stable signal transmission, the placement unit 45 includes an open placement box 41 embedded in the mounting plate 21; the placement box 41 has extension ends 42 fixed on both sides, and a support column 43 is fixedly connected to the bottom of the extension end 42. One end of the support column 43 is movably inserted into the mounting plate 21, and a support spring 44 is coaxially sleeved on the support column 43. The two ends of the support spring 44 elastically abut against the mounting plate 21 and the extension end 42, respectively.

[0050] In use, the support spring 44 can absorb the impact force generated by the vibration of the cabinet through elastic deformation, and drive the placement box 41 to achieve a small buffer displacement, so as to avoid hard collision or friction between the secondary line 23 and the placement box 41; at the same time, the embedded installation and the plug-in cooperation of the support column 43 ensure that the placement box 41 is installed stably as a whole, which not only achieves elastic protection for the secondary line 23, but also ensures the stability of its placement position.

[0051] Reference Figures 8-9 As shown, to address the elastic clamping requirement of the secondary wire 23 and avoid the poor heat dissipation problem caused by the wrapping method in the prior art, ensuring that the cable is neat and heat dissipation is smooth, the cable harness unit includes three sets of spaced placement plates 451; the four corners of the three sets of placement plates 451 are movably connected through a support shaft 452, and a second support spring 453 is coaxially sleeved between adjacent placement plates 451 and between the upper placement plate 451 and the top of the support shaft 452, and the second support spring 453 elastically abuts against each mating surface; each set of placement plates 451 is fixed with a wire harness clip 454 with an opening, the opening size of the wire harness clip 454 is adapted to the outer diameter of the secondary wire 23, which can realize the quick snap-fit ​​fixation of the secondary wire 23.

[0052] In use, with the help of the elastic force of the second support spring 453, the spacing of the three sets of placement plates 451 can be adjusted adaptively. The secondary wires 23 are elastically clamped by the wire harness clamp 454, which not only prevents the cables from loosening and shifting, but also prevents damage to the cable sheath due to excessive clamping. At the same time, the spacing of the three sets of placement plates 451 and the independent snap-fit ​​design of the wire harness clamp 454 make the secondary wires 23 arranged in a layered and orderly manner, reducing cable stacking and tangling, and ensuring unobstructed heat dissipation channels.

[0053] Reference Figures 9-10 As shown, in order to achieve directional guidance and stable clamping of the secondary wire 23, avoid cable displacement or bending damage, and ensure neat wiring and stable signal transmission, the guide unit includes a base 47 fixed to the inner wall of the switch cabinet 1. A flip-up clamping seat 48 is hinged on the base 47. The clamping seat 48 is provided with a buckle 49 with grooves on both sides at one end near the base 47. A concave structure card seat 410 is fixed at the corresponding position of the base 47. The two ends of the inner wall of the card seat 410 are elastically supported by built-in springs with buckle balls (not shown in the figure). The buckle balls can be locked into the grooves of the buckle blocks 49 to form a reliable positioning lock. The mating surfaces of the clamping seat 48 and the base 47 are symmetrically provided with wire grooves 412 that are adapted to the outer diameter of the secondary wire 23 for the secondary wire 23 to be smoothly passed through.

[0054] In use, flip the clamping seat 48 to place the secondary wire 23 into the cable tray 412, and then snap the clamping seat 48 shut. The locking action of the locking ball and the locking block 49 achieves quick locking, ensuring that the secondary wire 23 is firmly clamped and will not shift. The cable tray 412 also standardizes the cable routing, preventing bending or messy arrangement. At the same time, the hinged structure and flexible locking design facilitate the disassembly and maintenance of the cable.

[0055] Working principle: When the switchgear is in operation, the busbar copper bus 14 is connected to the power system through the wall bushing 13, and its surface energization is monitored in real time by the sensor 22 in the interlocking assembly 2. The elastic conductive connector 221 at one end of the sensor 22 adopts an elastic metal conductive structure design, which can fit tightly against the surface of the busbar copper bus 14. This not only achieves stable conduction of the conductive circuit and provides a reliable circuit foundation for the detection of live signals, but also offsets the contact gap caused by minor vibrations through its own elastic deformation, avoiding the contact problems that are prone to occur in traditional rigid conductive connections. At the same time, the sensor 22 and the busbar copper bus 14 are connected by a first fixing unit. The first fixing unit consists of two sets of semi-annular parts 31 connected together and fastened to the end of the sensor 22 by bolt 33. The fixing end 311 of the first unit cooperates with bolt 34 and buffer spring 35. The buffer spring 35 is coaxially sleeved on bolt 34, and its two ends elastically abut against the fixing end 311 and the side of the busbar copper bus 14, respectively, which can efficiently absorb the unidirectional impact generated by power load fluctuations.

[0056] The sensor 22 is connected to the mounting plate 21 via a similarly structured second fixing unit 37. The second fixing end of the second fixing unit 37 is movably connected to a bolt 38. Two buffer springs 39 are symmetrically fitted onto the bolt 38 on both sides of the second fixing end. These two sets of buffer springs 39 elastically abut against the side of the mounting plate 21 and the end face of the bolt 38, respectively, simultaneously counteracting the bidirectional force caused by cabinet vibration. This design of dual fixing units + dual spring sets avoids destructive processing of the sensor 22 through the encircling structure of the semi-circular component 31 and achieves directional buffering through the symmetrical spring layout, ensuring that the sensor 22 always maintains a stable detection posture, capturing the charged signal of the busbar copper bus 14, and solving the problems of detection deviation and component wear caused by vibration.

[0057] The charged signal captured by sensor 22 is quickly transmitted to the charged display device 25 and electromagnetic lock 24 through secondary line 23. Secondary line 23 has the dual functions of signal transmission and power supply. The closed-loop linkage control circuit formed by its connection is the transmission carrier of the sensing and locking function. In order to ensure the stability of signal transmission, secondary line 23 achieves full-process regular protection through fixing component 4. The placement unit 45 adopts an elastic support design. The embedded placement box 41 absorbs the vibration of the cabinet through the elastic deformation of support spring 44, and drives the box to a small buffer displacement to avoid hard friction between secondary line 23 and box.

[0058] The cable bundling unit, through the cooperation of three sets of spaced placement plates 451 and the second support spring 453, achieves layered elastic clamping of the secondary cable 23, which not only prevents the cable from loosening and shifting, but also avoids poor heat dissipation caused by traditional wrapping, ensuring the long-term operational stability of the cable; the guide unit, through the adaptation of the hinged clamping seat 48 and the cable passage 412, standardizes the extension path of the secondary cable 23, and the elastic snap-fit ​​design of the buckle 49 and the card seat 410 realizes the quick locking and unloading of the cable.

[0059] At the signal response end, the live display device 25 is fixed in a prominent position on the switch cabinet 1, allowing staff to intuitively grasp the live status of the equipment. The electromagnetic lock 24 is correspondingly fixed at the locking adapter of the cabinet door 11, and its live locking and de-energizing unlocking linkage logic is precisely adapted to the cabinet structure. When the busbar copper bus 14 is energized, the electromagnetic lock 24 remains locked with the power supply from the secondary line 23. The tight cooperation between the mechanical structure and the cabinet door 11 prevents arbitrary opening, thus physically blocking the risk of electric shock. When the busbar copper bus 14 is de-energized, the electromagnetic lock 24 automatically unlocks, allowing staff to safely carry out maintenance operations.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A switch cabinet with sensing and interlocking function, comprising a switch cabinet body (1), wherein the switch cabinet body (1) is hinged with a cabinet door (11), and a frame column (12) is fixed inside the switch cabinet body (1). At least three sets of wall bushings (13) are installed through the side of the switch cabinet body (1). The wall bushings (13) are connected to a busbar copper busbar (14) by bolts. The end of the busbar copper busbar (14) is connected to a connecting copper busbar (15) by bolts. A surge arrester (16) is connected to the end of the connecting copper busbar (15) away from the busbar copper busbar (14). A mounting bracket (17) is fixedly installed on the inner wall of the switch cabinet body (1). The surge arrester (16) is reliably connected to the mounting bracket (17) through a grounding component (18). The switch cabinet body (1) is characterized in that: The side of the busbar copper bus (14) is elastically buffered and connected to the locking assembly (2) through the buffer assembly (3); The locking assembly (2) includes a mounting plate (21) and a sensor (22) mounted on one side thereof. The sensor (22) has an elastic conductive connector (221). The mounting plate (21) is fixed to the inner wall of the switch cabinet (1). The sensor (22) and the mounting plate (21), and the sensor (22) and the bus copper bus (14) form a bidirectional directional elastic buffer structure through the buffer assembly (3).

2. A switchgear with sensing and interlocking function according to claim 1, characterized in that: The buffer assembly (3) includes a bolt two (34) that is threadedly connected to the busbar copper bus (14) through the first fixing unit. The bolt two (34) passes through the busbar copper bus (14) and the first fixing unit in sequence and is threadedly connected to a nut (36). A buffer spring one (35) is sleeved on the bolt two (34). The two ends of the buffer spring one (35) are in contact with the side of the first fixing unit and the busbar copper bus (14) respectively.

3. A switchgear with sensing and interlocking function according to claim 2, characterized in that: The first fixing unit includes two sets of semi-annular parts (31) that are fitted together. The two sets of semi-annular parts (31) are fitted together at one end of the sensor (22). The two ends of the semi-annular parts (31) are integrally provided with connecting ends (32). The connecting ends (32) of the two sets of semi-annular parts (31) are connected by bolts (33). The two sets of semi-annular parts (31) are provided with fixing ends (311) that are fitted together. The fixing ends (311) are movably connected to the nut (36) and elastically abut against one end of the buffer spring (35).

4. A switchgear with sensing interlocking function according to claim 3, characterized in that: The buffer assembly (3) also includes a bolt three (38) connected to the mounting plate (21) via a second fixing unit (37). The second fixing unit (37) has a similar structure to the first fixing unit. The second fixing unit (37) has a fixing end one (311) defined as a fixing end two. The fixing end two is movably connected to the bolt three (38). Buffer spring two (39) is sleeved on both sides of the bolt three (38) and located at the fixing end two. The two ends of the two sets of buffer spring two (39) are respectively connected to the side of the mounting plate (21) and the side of the bolt three (38).

5. A switchgear with sensing and interlocking function according to claim 1, characterized in that: The locking assembly (2) also includes a secondary line (23) for transmitting signals and power. One end of the secondary line (23) is connected to the sensor (22), and the other end is connected to the live display device (25) and the electromagnetic lock (24) respectively, forming a linkage control loop. The live display device (25) is fixed on the switch cabinet (1), and the electromagnetic lock (24) is fixed on the cabinet door (11). The signal interaction between the sensor (22) and the two is realized through the secondary line (23).

6. A switchgear with sensing interlocking function according to claim 5, characterized in that: The inner wall of the switch cabinet (1) is fixed with a fixing component (4). The fixing component (4) includes a placement box (41). The secondary wire (23) is elastically supported in the placement box (41) by a placement unit (45). The placement unit (45) is fixed with a wire harness unit for fixing the secondary wire (23). Multiple sets of guide units are fixed on the secondary wire (23) to guide its arrangement. The guide units are fixed to the inner wall of the switch cabinet (1).

7. A switchgear with sensing interlocking function according to claim 6, characterized in that: The placement box (41) is embedded in the mounting plate (21). One end of the placement box (41) is open. Extension ends (42) are fixed on both sides of the placement box (41). A support column (43) is fixed at the bottom of the extension end (42). One end of the support column (43) is movably inserted into the mounting plate (21). A support spring (44) is sleeved on the support column (43). The two ends of the support spring (44) are respectively connected to the mounting plate (21) and the extension end (42).

8. A switchgear with sensing interlocking function according to claim 6, characterized in that: The wire harness unit includes three sets of spaced placement plates (451). The four corners of the three sets of placement plates (451) are movably connected through a support shaft (452). A second support spring (453) is coaxially sleeved between adjacent placement plates (451) and between the upper placement plate (451) and the top of the support shaft (452). The second support spring (453) is correspondingly connected between each mating surface. A wire harness clamp (454) with an opening is fixed on the placement plate (451). The wire harness clamp (454) is suitable for engaging with the secondary wire (23).

9. A switchgear with sensing and interlocking function according to claim 7, characterized in that: The guiding unit includes a base (47) fixed to the inner wall of the switch cabinet (1). A clamping seat (48) is hinged on the base (47). The clamping seat (48) is provided with a buckle (49) with grooves on both sides at one end near the base (47). A concave structure card seat (410) is fixed at the corresponding end of the base (47). The two ends of the inner wall of the card seat (410) are supported by springs with buckle balls. The buckle balls are suitable for embedding into the grooves of the buckle (49) to form a positioning lock. A wire groove (412) for the secondary wire (23) to pass through is symmetrically opened between the clamping seat (48) and the base (47).

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