A switch cabinet instrument door plate wiring structure

Abstract

The utility model relates to a switchgear technical field, concretely is a switchgear instrument door board wiring structure, including door board, multiple signal lights of being located in the inboard of door board, knob switch, liquid crystal control screen, temperature and humidity controller, still including two wiring hollow cross beams and a wiring hollow longitudinal beam of being located in the inboard of door board, the outside of two wiring hollow cross beams is opened a plurality of first incoming wire mouth respectively, the outside of wiring hollow longitudinal beam is provided with two second incoming wire mouth, one wiring hollow cross beam and wiring hollow longitudinal beam outside all are equipped with the binding structure, the strong cable is fixed in the wiring hollow cross beam and wiring hollow longitudinal beam outside through the binding structure, this structure physically isolates strong and weak electric cable, avoids the centralized arrangement, weakens electromagnetic interference, prevents the problem of signal interference, satisfies the anti -interference demand, still is exclusive path for component cable, makes weak electric cable directional access, avoids the disorderly cross, guarantees signal stability.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, specifically to a wiring structure for a switch cabinet instrument door panel. Background Technology

[0002] In the use of switchgear, the wiring of the instrument panel is a crucial link in ensuring the stable operation of the electrical system. With the increasing integration of electrical equipment, the requirements for the convenience, standardization, and anti-interference of wiring are becoming increasingly stringent. At the same time, as an important component of the switchgear, the structural strength of the panel also affects the overall stability of the equipment.

[0003] A Chinese patent (CN210142804U) discloses an improved structure for a switchgear instrument door panel. While this structure utilizes detachable fixing beams and cable management binding beams to adjust wiring positions and enhance door panel strength, it suffers from several drawbacks. It fails to differentiate between high-voltage and low-voltage cable routing, relying solely on a single cable management binding beam for centralized cable routing. This can lead to electromagnetic interference from high-voltage cables affecting the data signal transmission of low-voltage cables, causing equipment malfunctions or signal errors. Consequently, it cannot meet the anti-interference requirements for separate high-voltage and low-voltage wiring within the switchgear. Therefore, a new wiring process for switchgear instrument doors is needed to address these practical challenges. Utility Model Content

[0004] The purpose of this utility model is to provide a wiring structure for switch cabinet instrument door panels, which solves the problem that the existing wiring structure does not distinguish between strong and weak current cables, and that single wiring can easily cause strong electromagnetic interference to weak current signals, resulting in equipment malfunction, signal errors, and failure to meet anti-interference requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wiring structure for a switch cabinet instrument door panel, including a door panel, multiple indicator lights, a rotary switch, an LCD control panel, and a temperature and humidity controller located on the inner side of the door panel, and further including low-voltage cables and high-voltage cables; the low-voltage cables are electrically connected to the rotary switch, the LCD control panel, and the temperature and humidity controller respectively, and the high-voltage cables are electrically connected to the multiple indicator lights, the rotary switch, the LCD control panel, and the temperature and humidity controller respectively; the multiple indicator lights are arranged horizontally at intervals, and the rotary switch, the LCD control panel, and the temperature and humidity controller are arranged horizontally at intervals and located below the indicator lights, and further including two hollow crossbeams and one hollow longitudinal beam for wiring located on the inner side of the door panel; the two hollow crossbeams for wiring are arranged at intervals along the longitudinal direction, and the hollow longitudinal beam for wiring... The beam is connected to the same end of the two hollow crossbeams for wiring; the outer sides of the two hollow crossbeams for wiring have multiple first inlets, and the outer sides of the hollow longitudinal beam for wiring have two second inlets. The outer sides of both hollow crossbeams and the hollow longitudinal beam for wiring are provided with binding structures for fixing high-voltage cables; the signal light is located above the two hollow crossbeams for wiring, and the high-voltage cables connected to it are fixed to the outer sides of one hollow crossbeam and the hollow longitudinal beam for wiring through the binding structures; the rotary switch, LCD control panel, and temperature and humidity controller are located between the two hollow crossbeams for wiring, and the low-voltage cables connected to them pass through the first inlet of the corresponding hollow crossbeam for wiring and exit from a second inlet of the hollow longitudinal beam for wiring; the high-voltage cables are fixed to the outer side of the other hollow crossbeam for wiring through the binding structures.

[0006] Furthermore, the inner side of the door panel is also provided with a fixed crossbeam and a fixed longitudinal beam; the fixed longitudinal beam abuts against the other end of the two wiring hollow crossbeams; the two ends of the fixed crossbeam abut against the opposite side of the fixed longitudinal beam and the wiring hollow longitudinal beam, respectively; multiple signal lights are located between another wiring hollow crossbeam and the fixed crossbeam; the fixed crossbeam, the fixed longitudinal beam, a wiring hollow crossbeam and the wiring hollow longitudinal beam together enclose a rectangular frame.

[0007] Furthermore, a U-shaped cable lead-out cover is provided at one corner of the inner side of the door panel; the ends of the multiple low-voltage cables that emerge from the same second inlet and one end of the multiple high-voltage cables all extend through the U-shaped cable lead-out cover to the outer side of the door panel.

[0008] Furthermore, cable protection flexible conduits are installed on the outside of the intersections of multiple high-voltage cables and multiple low-voltage cables.

[0009] Furthermore, both the hollow crossbeam and the hollow longitudinal beam for wiring include a C-shaped wire groove located on the inner side of the door panel, and a U-shaped wire groove cover covering the outer opening of the C-shaped wire groove; the outer side of the U-shaped wire groove cover is provided with a plurality of fixing screws, and is fixedly connected to the C-shaped wire groove by the plurality of fixing screws; the first wire inlet is opened on the outer wall of the C-shaped wire groove and the U-shaped wire groove cover of the hollow crossbeam for wiring; the second wire inlet is opened on the outer wall of the C-shaped wire groove and the U-shaped wire groove cover of the hollow longitudinal beam for wiring.

[0010] Furthermore, in the hollow crossbeam and hollow longitudinal beam of the cable routing with a binding structure on the outside, multiple first square holes are opened through the two side walls of the U-shaped cable tray cover; multiple second square holes corresponding one-to-one with the first square holes are opened through the two side walls of the C-shaped cable tray of the hollow crossbeam and hollow longitudinal beam of the cable routing; the binding structure consists of multiple nylon cable ties, each of which passes through a set of corresponding first and second square holes, and binds and fixes the high-voltage cables to the outside of the hollow crossbeam or hollow longitudinal beam of the cable routing.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a switchgear instrument panel wiring structure that constructs a partitioned wiring channel through two hollow crossbeams and one hollow longitudinal beam. This physically isolates low-voltage cables from high-voltage cables. Low-voltage cables are run inside the hollow crossbeams, while high-voltage cables are fixed to the outside of the hollow crossbeams and longitudinal beams by a binding structure. The low-voltage cables exit through the second inlet of the longitudinal beam, avoiding the concentrated laying of high-voltage and low-voltage cables. This reduces electromagnetic interference generated by high-voltage cables during operation and prevents data signals transmitted by low-voltage cables from being interfered with, thus preventing equipment malfunctions or signal errors. This meets the anti-interference requirements for the separation of high-voltage and low-voltage wiring in the switchgear. Furthermore, by combining the layered layout of components such as indicator lights and rotary switches, dedicated wiring paths are matched for the cables of different components, allowing low-voltage cables to enter the wiring channel through their corresponding first inlet, avoiding messy cable crossings and further ensuring signal transmission stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the wiring structure of the switch cabinet instrument door panel of this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of the C-shaped wire groove and the U-shaped wire groove cover of this utility model; Figure 4 This is a cross-sectional schematic diagram of the C-shaped wire groove and the U-shaped wire groove cover of this utility model.

[0013] In the diagram: 1. Door panel; 2. Hollow longitudinal beam for cable routing; 3. U-shaped cable outlet cover; 4. Low-voltage cable; 5. High-voltage cable; 6. Temperature and humidity controller; 7. LCD control panel; 8. Rotary switch; 9. Indicator light; 10. Fixed crossbeam; 11. C-shaped cable trough; 12. U-shaped cable trough cover; 13. First cable inlet; 14. Fixing screw; 15. First square hole; 16. Second square hole; 17. Cable protection flexible conduit; 18. Nylon cable tie; 19. Fixed longitudinal beam; 20. Second cable inlet; 21. Hollow crossbeam for cable routing. Detailed Implementation

[0014] Please see Figure 1-4 A wiring structure for a switchgear instrument panel includes a door panel 1, multiple indicator lights 9, a rotary switch 8, an LCD control panel 7, and a temperature and humidity controller 6 located inside the door panel 1. It also includes low-voltage cables 4 and high-voltage cables 5. The low-voltage cables 4 are electrically connected to the rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6, respectively. The high-voltage cables 5 are electrically connected to the multiple indicator lights 9, the rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6, respectively. The multiple indicator lights 9 are arranged horizontally at intervals. The rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6 are arranged horizontally at intervals and located below the indicator lights 9. The structure also includes two hollow crossbeams 21 and one hollow longitudinal beam 2 located inside the door panel 1. The two hollow crossbeams 21 are arranged longitudinally at intervals, and the hollow longitudinal beam 2 shares the same end with the two hollow crossbeams 21. The two hollow crossbeams 21 are connected; multiple first cable inlets 13 are opened on the outer side of each of the two hollow crossbeams 21, and two second cable inlets 20 are opened on the outer side of the hollow longitudinal beam 2. Both the hollow crossbeam 21 and the hollow longitudinal beam 2 are equipped with binding structures for fixing the high-voltage cables 5. The signal light 9 is located above the two hollow crossbeams 21, and the high-voltage cables 5 connected to it are fixed to the outer side of one hollow crossbeam 21 and the hollow longitudinal beam 2 through the binding structures. The rotary switch 8, the LCD control screen 7, and the temperature and humidity controller 6 are located between the two hollow crossbeams 21, and the low-voltage cables 4 connected to them pass through the first cable inlet 13 of the corresponding hollow crossbeam 21 and exit from one of the second cable inlets 20 of the hollow longitudinal beam 2. The high-voltage cables 5 are fixed to the outer side of the other hollow crossbeam 21 through the binding structures.

[0015] This application further proposes that the inner side of the door panel 1 is also provided with a fixed crossbeam 10 and a fixed longitudinal beam 19; the fixed longitudinal beam 19 abuts against the other end of the two wiring hollow crossbeams 21; the two ends of the fixed crossbeam 10 abut against the opposite side of the fixed longitudinal beam 19 and the wiring hollow longitudinal beam 2 respectively; multiple signal lights 9 are located between another wiring hollow crossbeam 21 and the fixed crossbeam 10; the fixed crossbeam 10, the fixed longitudinal beam 19, a wiring hollow crossbeam 21 and the wiring hollow longitudinal beam 2 together enclose a rectangular frame.

[0016] The fixed crossbeam 10 and the fixed longitudinal beam 19 are both fixed to the inside of the door panel 1 by welding. The two ends of the fixed longitudinal beam 19 are respectively tightly connected to the ends of the two hollow crossbeams 21 that are away from the hollow longitudinal beams 2, and the connection is fixed by spot welding or buckle.

[0017] Specifically, the rectangular frame structure enhances the overall rigidity of the door panel 1, distributes the force on the door panel 1, reduces the risk of deformation and bending caused by opening and closing vibrations or long-term use, and extends the service life of the door panel 1. The fixed crossbeam 10 and the fixed longitudinal beam 19 provide additional support for the hollow crossbeam 21 and the hollow longitudinal beam 2 of the wiring, preventing displacement due to cable weight or external force collisions and ensuring the stability of the wiring structure. The signal light 9 is confined between another hollow crossbeam 21 of the wiring and the fixed crossbeam 10, which not only prevents it from interfering with components such as the rotary switch 8 and the LCD control screen 7 in the middle, but also allows the fixed crossbeam 10 to cover the cables on the back of the signal light 9, improving the neatness of the inside of the door panel 1, and facilitating the later inspection and maintenance of the signal light 9.

[0018] This application further proposes that a U-shaped cable lead-out cover 3 is provided on one corner of the inner side of the door panel 1; the ends of multiple low-voltage cables 4 that pass through the same second inlet 20 and one end of multiple high-voltage cables 5 all extend through the U-shaped cable lead-out cover 3 to the outside of the door panel 1.

[0019] The U-shaped cable outlet cover 3 is installed on one corner of the inner side of the door panel 1 by welding or bolting, with its opening facing the edge of the door panel 1. After the high-voltage cables 5 and low-voltage cables 4 are sorted and routed, all the low-voltage cables 4 and high-voltage cables 5 that come out from the same second inlet 20 are first gathered into a bundle, and then the end of the cable bundle is aligned with the inlet of the U-shaped cable outlet cover 3 and slowly inserted along the extension direction of the channel until the cable bundle comes out from the other end of the U-shaped cable outlet cover 3, so that the U-shaped cable outlet cover 3 forms a limiting support for the section of the cable bundle before it passes through the door panel 1.

[0020] Specifically, the U-shaped cable outlet cover 3 can limit the high-voltage cable 5 and low-voltage cable 4 that pass through the second inlet 20, bear the weight of all cable bundles, prevent the cables from swinging randomly during the opening and closing of the door panel 1, prevent the cables from rubbing against the edge of the door panel 1 or other parts, protect the cable sheath from damage, and extend the service life of the cables.

[0021] This application further proposes that cable protection hoses 17 are provided on the outside of the intersection sections of multiple high-voltage cables 5 and multiple low-voltage cables 4.

[0022] After completing the classification and routing of low-voltage cables 4 and high-voltage cables 5, when the two cables intersect before exiting from the U-shaped cable lead-out cover 3, the cable protection hose 17 is fitted onto the outside of the intersection section.

[0023] Specifically, a cable protection flexible conduit 17 is installed on the outside of the junction of the high-voltage cable 5 and the low-voltage cable 4. The cable protection flexible conduit 17 has good flexibility and wear resistance, which can isolate the junction cable from the edges, frames and other structures that may come into contact with the door panel 1 during opening and closing, prevent the cable from being damaged due to friction and bending, protect the insulation layer of the high-voltage cable 5 and the low-voltage cable 4, and reduce the risk of leakage and short circuit. In addition, the cable protection flexible conduit 17 can gather the junction of the high-voltage cable 5 and the low-voltage cable 4 into a bundle, prevent them from getting tangled or misaligned when the door panel 1 moves, and maintain the neatness of the wiring.

[0024] This application further proposes that both the hollow crossbeam 21 and the hollow longitudinal beam 2 include a C-shaped wire trough 11 located inside the door panel 1, and a U-shaped wire trough cover 12 covering the outer opening of the C-shaped wire trough 11; the outer side of the U-shaped wire trough cover 12 is provided with a plurality of fixing screws 14 at intervals, and is fixedly connected to the C-shaped wire trough 11 by the plurality of fixing screws 14; the first wire inlet 13 is opened on the outer side wall of the C-shaped wire trough 11 and the U-shaped wire trough cover 12 of the hollow crossbeam 21; the second wire inlet 20 is opened on the outer side wall of the C-shaped wire trough 11 and the U-shaped wire trough cover 12 of the hollow longitudinal beam 2.

[0025] The C-shaped cable tray 11 is fixed to a preset position on the inner side of the door panel 1 by welding, with its opening facing outward away from the door panel 1, forming a cavity for accommodating cables. Subsequently, the U-shaped cable tray cover 12 is fastened to the outer opening end of the C-shaped cable tray 11 in a cover-like manner. Screw holes are opened at preset distances along the length direction on the outer side wall of the U-shaped cable tray cover 12. Multiple fixing screws 14 pass through these screw holes and are screwed into the threaded holes at corresponding positions of the C-shaped cable tray 11, thereby fixing the U-shaped cable tray cover 12 and the C-shaped cable tray 11 together to form a hollow cable routing channel. The first cable inlet 13 is a through opening, which is simultaneously opened on the outer wall of the C-shaped cable trough 11 and the corresponding position of the U-shaped cable trough cover 12. The size and shape of the openings are matched to ensure that the cable can pass through the hollow channel. Similarly, on the cable routing hollow longitudinal beam 2, the second cable inlet 20 is also simultaneously opened on the outer wall of its C-shaped cable trough 11 and the corresponding position of its U-shaped cable trough cover 12, forming a cable entry and exit channel in the longitudinal beam direction.

[0026] Specifically, the C-shaped cable tray 11 and the U-shaped cable tray cover 12 are detachably connected by fixing screws 14, which facilitates the later opening of the U-shaped cable tray cover 12 to inspect or replace the cable and reduce the difficulty of maintenance. The first cable inlet 13 and the second cable inlet 20 are opened simultaneously on the C-shaped cable tray 11 and the U-shaped cable tray cover 12 of the cable routing hollow crossbeam 21 and the cable routing hollow longitudinal beam 2, respectively, to avoid cable bending or wear due to misalignment of the openings, and at the same time guide the cable to run neatly and prevent messy wiring.

[0027] This application further proposes that in the hollow crossbeam 21 and hollow longitudinal beam 2 with binding structures on the outside, the two side walls of the U-shaped cable tray cover 12 are provided with multiple spaced first square holes 15; the two side walls of the C-shaped cable tray 11 of the hollow crossbeam 21 and hollow longitudinal beam 2 are provided with multiple second square holes 16 corresponding to the first square holes 15; the binding structure consists of multiple nylon cable ties 18, each nylon cable tie 18 passing through a set of corresponding first square holes 15 and second square holes 16, and binding and fixing the power cable 5 to the outside of the hollow crossbeam 21 or the hollow longitudinal beam 2.

[0028] The first square holes 15 are spaced apart along the length of the crossbeam. Multiple second square holes 16 are drilled through the two side walls of the C-shaped cable tray 11 corresponding to the positions of the first square holes 15, with a one-to-one correspondence between the first square holes 15 and the second square holes 16. The binding structure uses multiple nylon cable ties 18. Each nylon cable tie 18 passes sequentially through a set of corresponding first square holes 15 (entering from the outside of the U-shaped cable tray cover 12) and second square holes 16 (exiting from the inside of the C-shaped cable tray 11), then wraps around the high-voltage cable 5, reverses direction, and tightens and locks, ultimately binding and fixing the high-voltage cable 5 to the outer wall of the hollow crossbeam 21 or the hollow longitudinal beam 2.

[0029] Specifically, the one-to-one correspondence between the first square hole 15 and the second square hole 16 provides a threading position for the nylon cable tie 18, preventing deviation during binding and ensuring that the power cable 5 is always fixed to the outside of the hollow crossbeam 21 and the hollow longitudinal beam 2, and will not shift due to vibration of the door panel 1 opening and closing.

[0030] Working process and principle: When assembling the wiring structure, two hollow crossbeams 21 are fixed longitudinally along the inner side of the door panel 1 at intervals. The hollow longitudinal beam 2 is connected to the same end of the two crossbeams, forming a U-shaped wiring channel. At the same time, a fixed crossbeam 10 and a fixed longitudinal beam 19 are installed. The fixed longitudinal beam 19 abuts against the other end of the two hollow crossbeams 21. The two ends of the fixed crossbeam 10 abut against the opposite sides of the fixed longitudinal beam 19 and the hollow longitudinal beam 2, respectively. Finally, it is enclosed with one of the hollow crossbeams 21 and the hollow longitudinal beam 2 to form a rectangular frame. The frame structure enhances the deformation resistance of the door panel 1 and improves its bending strength.

[0031] During wiring, the low-voltage cable 4 is first electrically connected to the rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6 respectively. Among them, the low-voltage cable 4 connected to the rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6 located between the two hollow crossbeams 21 passes through the corresponding first inlet 13 of the lower hollow crossbeam 21, enters the interior of the hollow crossbeam 21, and then merges into the hollow longitudinal beam 2 through one of the second inlets 20, and then exits from the other second inlet 20 of the hollow longitudinal beam 2. The high-voltage cable 5 connected to the signal light 9 located above the two hollow crossbeams 21 is tied and fixed to the outside of the lower hollow crossbeam 21 and the hollow longitudinal beam 2 by nylon cable ties 18 (passing through the corresponding first square hole 15 and second square hole 16 of the lower hollow crossbeam 21 and the hollow longitudinal beam 2), and finally merges with the ends of the low-voltage cable 4 and the high-voltage cable 5 of the middle component. The high-voltage cable 5, which connects the rotary switch 8, the LCD control panel 7, and the temperature and humidity controller 6, is secured to the outside of the lower cable tray 21 using nylon cable ties 18 (passing through the corresponding first square hole 15 and second square hole 16 of the lower cable tray 21). It is then gathered together with the low-voltage cable 4. Finally, a cable protection flexible conduit 17 is fitted over the junction of the low-voltage cable 4 and the high-voltage cable 5. The flexibility and wear resistance of the cable protection flexible conduit 17 prevent damage to the cables due to bending and friction during the opening and closing of the door panel 1, extending the cable's lifespan. All cables are then passed through the U-shaped cable outlet cover 3 and extended to the outside of the door panel 1.

[0032] This structure, through the separate wiring design of low-voltage cables 4 and high-voltage cables 5, combined with the physical isolation and shielding effect of the inner and outer cavities of the hollow crossbeam 21 in the wiring, can reduce the electromagnetic interference generated by the high-voltage cables 5 during operation, and avoid affecting the data signals transmitted by the low-voltage cables 4, making the data signal transmission more stable and accurate; at the same time, it effectively reduces problems such as equipment malfunction and signal detection errors caused by electromagnetic interference, further improving the operational stability and control accuracy of the switch cabinet electrical system.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wiring structure for a switch cabinet instrument panel, comprising a panel (1), a plurality of indicator lights (9), a rotary switch (8), an LCD control screen (7), and a temperature and humidity controller (6) disposed on the inner side of the panel (1), and further comprising low-voltage cables (4) and high-voltage cables (5); wherein the low-voltage cables (4) are electrically connected to the rotary switch (8), the LCD control screen (7), and the temperature and humidity controller (6), and the high-voltage cables (5) are electrically connected to the plurality of indicator lights (9), the rotary switch (8), the LCD control screen (7), and the temperature and humidity controller (6); wherein the plurality of indicator lights (9) are arranged horizontally at intervals, and the rotary switch (8), the LCD control screen (7), and the temperature and humidity controller (6) are arranged horizontally at intervals and located below the indicator lights (9), characterized in that, It also includes two hollow crossbeams (21) for wiring and one hollow longitudinal beam (2) for wiring located on the inner side of the door panel (1); the two hollow crossbeams (21) for wiring are arranged longitudinally at intervals, and the hollow longitudinal beam (2) for wiring is connected to the two hollow crossbeams (21) at the same end; the two hollow crossbeams (21) for wiring have multiple first inlets (13) on their outer sides, and the hollow longitudinal beam (2) for wiring has two second inlets (20) on its outer side; the two hollow crossbeams (21) for wiring and the hollow longitudinal beam (2) for wiring are all provided with binding structures for fixing high-voltage cables (5) on their outer sides; The signal light (9) is located above the two hollow crossbeams (21) for wiring. The high-voltage cable (5) connected to it is fixed to the outside of one hollow crossbeam (21) and the hollow longitudinal beam (2) for wiring by a binding structure. The rotary switch (8), the LCD control panel (7), and the temperature and humidity controller (6) are located between the two hollow crossbeams (21). The low-voltage cable (4) connected to it passes through the first inlet (13) of the corresponding hollow crossbeam (21) and exits from a second inlet (20) of the hollow longitudinal beam (2). The high-voltage cable (5) is fixed to the outside of the other hollow crossbeam (21) for wiring by a binding structure.

2. The wiring structure of the switchgear instrument door panel according to claim 1, characterized in that, The inner side of the door panel (1) is also provided with a fixed crossbeam (10) and a fixed longitudinal beam (19); the fixed longitudinal beam (19) abuts against the other end of the two wiring hollow crossbeams (21); the two ends of the fixed crossbeam (10) abut against the opposite side of the fixed longitudinal beam (19) and the wiring hollow longitudinal beam (2); multiple signal lights (9) are located between another wiring hollow crossbeam (21) and the fixed crossbeam (10); the fixed crossbeam (10), the fixed longitudinal beam (19), a wiring hollow crossbeam (21) and the wiring hollow longitudinal beam (2) together form a rectangular frame.

3. The wiring structure of the switchgear instrument door panel according to claim 1, characterized in that, A U-shaped cable lead-out cover (3) is provided on one corner of the inner side of the door panel (1); the ends of multiple low-voltage cables (4) that pass through the same second inlet (20) and one end of multiple high-voltage cables (5) all extend through the U-shaped cable lead-out cover (3) to the outside of the door panel (1).

4. The wiring structure of the switchgear instrument door panel according to claim 1, characterized in that, Cable protection hoses (17) are installed on the outside of the intersection of multiple high-voltage cables (5) and multiple low-voltage cables (4).

5. The wiring structure of the switchgear instrument door panel according to claim 1, characterized in that, The hollow crossbeam (21) and the hollow longitudinal beam (2) both include a C-shaped wire groove (11) located inside the door panel (1) and a U-shaped wire groove cover (12) covering the outer opening of the C-shaped wire groove (11). The outer side of the U-shaped wire groove cover (12) is provided with a plurality of fixing screws (14) and is fixedly connected to the C-shaped wire groove (11) by the plurality of fixing screws (14). The first wire inlet (13) is opened on the outer side wall of the C-shaped wire groove (11) and the U-shaped wire groove cover (12) of the hollow crossbeam (21). The second wire inlet (20) is opened on the outer side wall of the C-shaped wire groove (11) and the U-shaped wire groove cover (12) of the hollow longitudinal beam (2).

6. The wiring structure of the switch cabinet instrument door panel according to claim 5, characterized in that, In the hollow crossbeam (21) and hollow longitudinal beam (2) with binding structure on the outside, the two sides of the U-shaped cable tray cover (12) are provided with multiple first square holes (15) arranged at intervals; the two sides of the C-shaped cable tray (11) of the hollow crossbeam (21) and the hollow longitudinal beam (2) are provided with multiple second square holes (16) corresponding to the first square holes (15); the binding structure is multiple nylon cable ties (18), each of the nylon cable ties (18) passes through a set of corresponding first square holes (15) and second square holes (16), and binds and fixes the power cable (5) to the outside of the hollow crossbeam (21) or the hollow longitudinal beam (2).

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