A box-type substation facilitating wire harness bundling

Abstract

This invention discloses a prefabricated substation for easy wire harness management, relating to the technical field of prefabricated substations. It includes a main substation body, with a junction box on one side and a cable tray box on another side. A cover is hinged to one side of the cable tray box, and the cover has a cable tray port for power supply lines to pass through. This invention, by setting up an independent cable tray box, centralizes the introduction, organization, and fixing of external wires in a single independent space, avoiding messy wire distribution inside the substation body, improving the cleanliness and safety of the interior space, and facilitating subsequent inspection and maintenance. Furthermore, the cable harness device integrates clamping, transmission, locking, and switching functions, forming an independent functional module. This modular design is not only compact and easy to install, but also provides stable and reliable clamping of wires, preventing loosening due to vibration or external force.

Description

Technical Field

[0001] This invention relates to the field of prefabricated substation technology, and particularly to a prefabricated substation that facilitates the tidying up of wiring harnesses. Background Technology

[0002] A prefabricated substation (or simply prefabricated substation) is a factory-prefabricated complete set of power distribution equipment that combines high-voltage switchgear, distribution transformers, and low-voltage power distribution devices according to a specific wiring scheme. It features a compact structure, small footprint, and convenient installation, and is widely used in urban power grids, industrial parks, residential communities, tourist attractions, and other locations. To meet the needs of temporary power supply, mobile operations, or emergency repairs, mobile prefabricated substations have emerged. These typically integrate the power equipment into a movable enclosure, with a towing device at the bottom or a hoisting structure at the top for easy transportation and rapid deployment.

[0003] Existing prefabricated substation junction boxes have poor adaptability to wires of different diameters. Although some existing prefabricated substations have simple clamps or clamps, they can usually only fix wires of a single specification, or cannot be flexibly adjusted according to the actual diameter of the wire. When it is necessary to connect incoming wires of different thicknesses (such as temporarily changing the power supply capacity or using spare wires of different specifications), it is often difficult to achieve stable and reliable clamping and fixing, which can easily lead to loosening of the wires and affect the stability and safety of the power connection.

[0004] Secondly, existing wire fixing devices lack ease of operation. For example, some bolt-fastened structures are difficult to operate in the confined space of the junction box, and are prone to stripping after repeated disassembly; some spring-clamp structures are easy to operate, but have limited clamping force and cannot meet the fixing requirements of large-diameter heavy wires; some structures lack effective anti-loosening design, and the fixing structure may loosen during long-term operation or under external vibration, leading to wire displacement or even detachment. In view of this, the present invention proposes a box-type substation that facilitates wire harness aggregation. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated substation that facilitates wire harness organization, thereby solving the problems mentioned in the background art regarding the poor adaptability and unstable fixing of wires in the junction box of existing prefabricated substations.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a box-type substation that facilitates wire harness assemblies, comprising a transformer box body, a junction box on one side of the transformer box body, a cable tray box on one side of the transformer box body, a cover hinged to one side of the cable tray box, a cable tray port for power supply lines to pass through on the cover, a through opening communicating with the transformer box body inside the cable tray box, and a wire harnessing device at the through opening for clamping wires of different diameters; The wire harnessing device includes a base fixedly connected to the outer wall of the transformer box body. A positioning ring is provided on one side of the base. Three clamping plates are evenly distributed around the center of the positioning ring between the base and the positioning ring. An installation ring is fixedly sleeved on the outer wall of the positioning ring. The wire harnessing device also includes a transmission device for driving the clamping plates to clamp or release the wires, a power source for outputting power to the transmission device, a locking device for limiting the unidirectional rotation of the power source, and a switching device for controlling the locking and releasing of the locking device. The top surface of the transformer box body is fixedly connected with a hanging lug.

[0007] Preferably, the transmission device includes a pin fixedly connected to each clamping plate, one end of the pin being rotatably connected to the base, and the other end of the pin passing through the mounting ring and fixedly sleeved with a gear; the transmission device also includes an internal gear ring rotatably connected to one side of the mounting ring, the inner wall of the internal gear ring being provided with internal teeth, and the internal teeth simultaneously meshing with three gears.

[0008] Preferably, the power source includes a rotating ring fixedly connected to the internal gear ring, and the outer wall of the rotating ring is provided with anti-slip texture.

[0009] Preferably, the locking device includes a locking tongue rotatably connected to the inner wall of the mounting ring, the outer edge of the inner gear ring is provided with external teeth, one end of the locking tongue abuts against the external teeth of the inner gear ring, a positioning rod is fixedly connected to the inner wall of the mounting ring, a clearance hole is opened on the locking tongue for the positioning rod to pass through, the diameter of the clearance hole is larger than the diameter of the positioning rod; a spring is sleeved on the positioning rod, the two ends of the spring abut against the inner wall of the mounting ring and the top surface of the locking tongue respectively, for applying an elastic force to the locking tongue to keep it abutting against the external teeth.

[0010] Preferably, the switching device includes a plug rod slidably connected to a mounting ring, the bottom end of the plug rod passing through the mounting ring and abutting against the top surface of the locking tongue; a pressing block is fixedly connected to the top end of the plug rod, and a limit plate is fixedly connected to the bottom end of the plug rod.

[0011] Preferably, the clamping plate is crescent-shaped and concave towards the side facing the wire.

[0012] Preferably, the electrical box has a cable tray opening, and a rainproof device is provided at the cable tray opening. The rainproof device includes a rainproof sleeve fixedly connected to the cable tray opening. The rainproof sleeve is trapezoidal in shape and has a through hole through which the power supply line passes.

[0013] Preferably, both the bottom surface of the cable box and the box cover are provided with drainage outlets.

[0014] Preferably, a rubber ring for protecting the wire is fixedly fitted inside the second cable outlet.

[0015] The technical effects and advantages of this invention are as follows: This invention employs a design with three crescent-shaped clamping plates evenly distributed along the circumference. The clamping plates have a concave crescent-shaped arc surface facing the wire. This arc-shaped structure can well conform to the outer wall of wires of different diameters. Regardless of the thickness of the wire being connected, the three crescent-shaped clamping plates can effectively wrap and support the wire. At the same time, through the synchronous meshing transmission of the internal gear ring and three gears, the synchronous movement of the three clamping plates is achieved, ensuring that the wire is always clamped in the central position, with uniform force, effectively preventing axial slippage or loosening of the wire, and ensuring the stability of the connection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the installation position of the cable box according to the present invention.

[0018] Figure 3 This is a schematic diagram of the installation location of the electrical junction box according to the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the cable box of the present invention.

[0020] Figure 5 This is an exploded structural diagram of the wire harness device of the present invention.

[0021] Figure 6 for Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 7 for Figure 5 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Main body of the transformer box; 11. Hanging lug; 2. Connection box; 21. Cable tray one; 22. Rain cover; 3. Cable tray box; 31. Box cover; 32. Cable tray two; 33. Drain outlet; 4. Cable harness; 41. Base; 42. Positioning ring; 43. Clamping plate; 431. Pin; 44. Gear; 45. Mounting ring; 46. Internal gear ring; 461. External gear; 47. Rotating ring; 5. Pressing block; 51. Insert rod; 52. Limiting plate; 6. Locking tongue; 61. Clearance hole; 62. Positioning rod; 63. Spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides, for example Figure 1-7 The box-type substation shown is easy to bundle wires and includes a transformer box body 1. A power receiving box 2 is provided on one side of the transformer box body 1. A cable tray box 3 is provided on one side of the transformer box body 1. A box cover 31 is hinged to one side of the cable tray box 3. A cable tray port 32 for power supply lines to pass through is provided on the box cover 31. A through port communicating with the transformer box body 1 is provided inside the cable tray box 3. A wire bundling device 4 is provided at the through port. The wire bundling device 4 is used to clamp wires of different diameters. The cable harness device 4 includes a base 41 fixedly connected to the outer wall of the transformer box body 1. A positioning ring 42 is provided on one side of the base 41. Three clamping plates 43 are evenly distributed around the center of the positioning ring 42 between the base 41 and the positioning ring 42. An installation ring 45 is fixedly sleeved on the outer wall of the positioning ring 42. The cable harness device 4 also includes a transmission device for driving the clamping plates 43 to clamp or release the wires, a power source for outputting power to the transmission device, a locking device for limiting the unidirectional rotation of the power source, and a switching device for controlling the locking and releasing of the locking device. The top surface of the transformer box body 1 is fixedly connected with a hanging lug 11; This invention includes a rectangular transformer box body 1. A junction box 2 is provided on one side wall of the transformer box body 1 to accommodate the access terminals of external incoming wires. A cable tray 3 is fixedly connected to the same side wall of the transformer box body 1, below the junction box 2. The cable tray 3 is a box-shaped structure with an opening on one side, and a cover 31 is hinged to the opening side. The cover 31 can be opened or closed. Multiple semi-circular cable tray openings 32 are provided on the bottom edge of the cover 31. When the cover 31 is closed, these cable tray openings 32 allow power lines to pass through and enter the interior of the cable tray 3. A through-hole (not shown in the diagram) is provided on the side wall of the cable tray 3 adjacent to the transformer box body 1, allowing the interior space of the cable tray 3 to communicate with the interior space of the transformer box body 1. A cable harness 4 is fixedly installed at this through-hole to gather and clamp the wires entering from the cable tray openings 32, and then guide them through the through-hole into the interior of the transformer box body 1.

[0026] The specific structure of the cable management device 4 is as follows: it includes a disc-shaped base 41, which is fixedly connected to the outer wall of the transformer box body 1 (i.e., the inner side wall of the cable tray 3) by bolts, and surrounds the aforementioned through-hole. A positioning ring 42 is coaxially arranged at the front of the base 41, with a gap between the positioning ring 42 and the base 41. Three clamping plates 43 are arranged between the base 41 and the positioning ring 42, and these three clamping plates 43 are evenly distributed around the center of the positioning ring 42, i.e., at 120-degree angles to each other. An installation ring 45 is fixedly sleeved on the outer circumferential wall of the positioning ring 42.

[0027] In addition, the wire harness device 4 integrates multiple functional mechanisms: a transmission device for driving the three clamping plates 43 to move synchronously, thereby clamping or releasing the wire located at their center; a power source for inputting power to the transmission device; a locking device for limiting the reverse rotation of the power source after clamping to prevent the clamping from loosening; and a switching device for controlling the locking and releasing of the locking device.

[0028] The top four corners of the transformer box body 1 are fixedly welded with hanging lugs 11, and the hanging lugs 11 are provided with lifting holes to facilitate the use of cranes and other equipment to lift and unload the entire transformer box. This invention, by setting up an independent cable management box 3, centralizes the introduction, organization, and fixing of external wires in a single, independent space. This avoids the messy distribution of wires inside the transformer box body 1, improving the cleanliness and safety of the box interior and facilitating subsequent inspection and maintenance. The cable management device 4 integrates multiple functions such as clamping, transmission, locking, and switching, forming an independent functional module. This modular design is not only compact and easy to install, but also provides stable and reliable clamping of the wires, preventing them from loosening due to vibration or external force.

[0029] like Figure 4 and Figure 5 As shown, the transmission device includes a pin 431 fixedly connected to each clamping plate 43. One end of the pin 431 is rotatably connected to the base 41, and the other end of the pin 431 passes through the mounting ring 45 and is fixedly sleeved with a gear 44. The transmission device also includes an internal gear ring 46 rotatably connected to one side of the mounting ring 45. The inner wall of the internal gear ring 46 is provided with internal teeth, which mesh with three gears 44 at the same time. The transmission device includes three pins 431, one end of which is fixedly connected to a clamping plate 43. The other end of the pin 431 passes through a corresponding shaft hole on the base 41, forming a rotatable connection with the base 41. The end of each pin 431 extends rearward, penetrating into the internal cavity of the mounting ring 45, and a gear 44 is fixedly sleeved on this end.

[0030] The transmission device also includes an internal gear ring 46, which is rotatably mounted on one side of the mounting ring 45. Internal teeth are machined on the inner circumferential wall of the internal gear ring 46. During installation, all three gears 44 are located inside the internal gear ring 46, and all three gears 44 simultaneously mesh with the internal teeth of the internal gear ring 46. Thus, the rotation of the internal gear ring 46 drives the three gears 44 to rotate synchronously, which in turn drives the three clamping plates 43 to rotate synchronously around the axis of the pin 431 via the pin shaft 431. Through the meshing transmission between the internal gear ring 46 and the three gears 44, the three clamping plates 43 achieve completely synchronous movement. When it is necessary to clamp the wire, the three clamping plates 43 will move towards the center simultaneously and at equal angles, ensuring that the wire is always clamped in the center position, with uniform force and no deviation.

[0031] like Figure 4 As shown, the power source includes a rotating ring 47 fixedly connected to the internal gear ring 46, and the outer wall of the rotating ring 47 is provided with anti-slip texture. The power source mainly includes a rotating ring 47. The rotating ring 47 is a circular component, its inner ring being fixedly connected to the outer circumferential wall of the internal gear ring 46. The operator can manually rotate the rotating ring 47 to drive the internal gear ring 46 to rotate. To facilitate manual operation and prevent slippage, the outer circumferential wall of the rotating ring 47 is machined with knurled or grooved anti-slip textures. The power source adopts the form of a manual rotating ring 47. On-site operators do not need to carry any tools and can directly rotate by hand to complete the clamping or loosening action, which greatly improves the convenience and efficiency of wiring.

[0032] like Figure 6 and Figure 7As shown, the locking device includes a locking tongue 6 rotatably connected to the inner wall of the mounting ring 45. The outer edge of the inner gear ring 46 is provided with external teeth 461. One end of the locking tongue 6 abuts against the external teeth 461 of the inner gear ring 46. A positioning rod 62 is fixedly connected to the inner wall of the mounting ring 45. A clearance hole 61 is opened on the locking tongue 6 for the positioning rod 62 to pass through. The diameter of the clearance hole 61 is larger than the diameter of the positioning rod 62. A spring 63 is sleeved on the positioning rod 62. The two ends of the spring 63 abut against the inner wall of the mounting ring 45 and the top surface of the locking tongue 6, respectively, to apply a spring force to the locking tongue 6 to keep it abutting against the external teeth 461. The locking device is essentially a ratchet mechanism. The ratchet is the internal gear ring 46 itself, with multiple unidirectional ratchet teeth, or external teeth 461, evenly machined on its outer circumference. The pawl is a locking tongue 6, one end of which is rotatably connected to the inner wall of the mounting ring 45 via a shaft (not shown in the diagram). Its free end abuts against the external teeth 461 of the internal gear ring 46, allowing the internal gear ring 46 to rotate in one direction, such as the clamping direction, while preventing it from rotating in the opposite direction, such as the loosening direction.

[0033] To provide the locking tongue 6 with the elastic force for reset and maintaining engagement, a positioning rod 62 is fixedly installed on the inner wall of the mounting ring 45. A clearance hole 61 is provided on the locking tongue 6, the diameter of which is larger than the diameter of the positioning rod 62, allowing the positioning rod 62 to pass through the hole without affecting the rotation of the locking tongue 6. A spring 63 is fitted onto the positioning rod 62, one end of which abuts against the inner wall of the mounting ring 45, and the other end abuts against the top surface of the locking tongue 6. Under the elastic force of the spring 63, the locking tongue 6 is pressed downwards, ensuring that its free end always maintains tight contact with the outer teeth 461 of the internal gear ring 46. The locking device utilizes the unidirectional nature of the ratchet mechanism. After the operator rotates the rotating ring 47 to clamp the wire, it automatically prevents the inner gear ring 46 from reversing, thereby ensuring that the clamping plate 43 does not loosen and maintaining a stable clamping force. This prevents the wire from loosening due to vibration during long-term operation.

[0034] like Figure 6 As shown, the switching device includes a plug rod 51 that is slidably connected to the mounting ring 45. The bottom end of the plug rod 51 passes through the mounting ring 45 and abuts against the top surface of the locking tongue 6. A pressing block 5 is fixedly connected to the top end of the plug rod 51, and a limit plate 52 is fixedly connected to the bottom end of the plug rod 51. The switching device is mainly used to control the locking and releasing of the locking device. It includes a rod 51, which is perpendicular to the side wall of the mounting ring 45 and slides in engagement with a guide hole on the mounting ring 45. The bottom end of the rod 51 passes through the side wall of the mounting ring 45, extends into the interior of the mounting ring 45, and abuts against the top surface of the latch 6. The top end of the rod 51 extends out of the mounting ring 45 and is fixedly connected to a pressing block 5 for pressing with a finger. To prevent the rod 51 from dislodging from the mounting ring 45, a limiting plate 52 is also fixedly connected to the bottom end of the rod 51 inside the mounting ring 45. The size of the limiting plate 52 is larger than the diameter of the guide hole.

[0035] When it is necessary to release the wire, the operator presses the pressing block 5 with their finger, causing the insert rod 51 to move downwards. Its bottom end pushes down on the top surface of the locking tongue 6, overcoming the elastic force of the spring 63, causing the locking tongue 6 to rotate upwards around its axis. When the free end of the locking tongue 6 completely disengages from the outer teeth 461 of the inner gear ring 46, the ratchet mechanism is released. At this time, the operator can rotate the rotating ring 47 in the opposite direction to release the wire from the clamping plate 43. After releasing the pressing block 5, the locking tongue 6 returns to its original position under the elastic force of the spring 63, simultaneously pushing the insert rod 51 back to its original position.

[0036] like Figure 4 and Figure 5 As shown, the clamping plate 43 is a crescent shape that is concave towards the side facing the wire; All three clamping plates 43 are designed as crescent-shaped indentations facing the wire. Essentially, the working surface of the clamping plate 43 that contacts the wire is an arc-shaped concave surface. The radius of curvature of this arc matches the outer diameter of common wires, allowing for better contact with the wire surface during clamping. The concave surfaces of the three crescent-shaped clamping plates 43 together form an approximately circular clamping space. The crescent-shaped concave arc surface can form a surface contact with the outer wall of the cylindrical wire. Compared with the point contact or line contact of the flat clamping block, the contact area is larger, the friction is stronger, the clamping is more stable and reliable, and it can effectively prevent the wire from sliding axially.

[0037] like Figure 2 and 3 As shown, the electrical box 2 has a cable tray 21. A rainproof device is provided at the cable tray 21. The rainproof device includes a rainproof sleeve 22 fixedly connected to the cable tray 21. The rainproof sleeve 22 is trapezoidal in shape and has a through hole through which the power supply line passes. A cable tray 21 is provided on the bottom wall of the junction box 2 for the power supply cable to be connected from below. A rain cover 22 is fixedly installed at the cable tray 21. The rain cover 22 is made of flexible material such as rubber or plastic, and is generally trumpet-shaped, with the diameter gradually increasing from top to bottom. The interior of the rain cover 22 is hollow, forming a through hole for the power supply cable to pass through. During installation, the smaller upper end of the rain cover 22 is tightly connected to the edge of the cable tray 21, while the larger lower end hangs freely. The trapezoidal rain cover 22, with its downward opening, effectively prevents rainwater from flowing into the junction box 2 along the surface of the wires. Even if rainwater falls on the wires, it will flow down the wires to the inner wall of the rain cover 22 and then drip to the ground, without entering the box, greatly improving the waterproof safety of the junction points.

[0038] like Figure 3 and Figure 4 As shown, both the bottom surfaces of the cable box 3 and the box cover 31 are provided with drainage outlets 33; At least one drain outlet 33 is provided at the bottom of the cable box 3 and the cover 31. If rainwater accidentally enters the inside of the cable box 3, for example, when the cover 31 is opened for operation, or if it seeps in from the gap of the cable outlet 32, the drain outlet 33 can drain the water out of the box in time, avoid the box being damp for a long time, and prevent electrical components from getting damp or metal components from rusting.

[0039] like Figure 4 As shown, a rubber ring for protecting the wire is fixedly fitted inside the cable outlet 32. A rubber ring is fixedly fitted onto the inner edge of each cable tray 32. This rubber ring matches the shape of the cable tray 32; it can be a complete ring or an open snap-fit ​​structure. When the wire passes through the cable tray 32, the wire contacts the rubber ring directly, rather than the metal or plastic edge of the cover 31. The rubber ring is soft and can effectively protect the wire from being scratched or worn by the sharp edges or burrs of the cover 31 when the wire passes through the cable tray 2 32, thus avoiding safety hazards such as leakage and short circuit caused by insulation damage.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated substation for easy wire harness assembly, comprising a transformer box body (1), wherein a junction box (2) is provided on one side of the transformer box body (1), characterized in that: A cable box (3) is provided on one side of the transformer box body (1). A cover (31) is hinged to one side of the cable box (3). A cable port (32) for power supply lines to pass through is provided on the cover (31). A through-hole communicating with the transformer box body (1) is provided inside the cable box (3). A wire harnessing device (4) is provided at the through-hole. The wire harnessing device (4) is used to clamp wires of different diameters. The wire harness device (4) includes a base (41) fixedly connected to the outer wall of the transformer box body (1). A positioning ring (42) is provided on one side of the base (41). Three clamping plates (43) are evenly distributed around the center of the positioning ring (42) between the base (41) and the positioning ring (42). An installation ring (45) is fixedly sleeved on the outer wall of the positioning ring (42). The wire harness device (4) is provided with a transmission device for driving the clamping plates (43) to clamp or release the wires, a power source for outputting power to the transmission device, a locking device for limiting the unidirectional rotation of the power source, and a switch device for controlling the locking and releasing of the locking device. The top surface of the transformer box body (1) is fixedly connected with a hanging lug (11).

2. A prefabricated substation for easy wire harness assembly according to claim 1, characterized in that: The transmission device includes a pin (431) fixedly connected to each clamping plate (43). One end of the pin (431) is rotatably connected to the base (41), and the other end of the pin (431) passes through the mounting ring (45) and is fixedly sleeved with a gear (44). The transmission device also includes an internal gear ring (46) rotatably connected to one side of the mounting ring (45). The inner wall of the internal gear ring (46) is provided with internal teeth, which mesh with three gears (44) at the same time.

3. A prefabricated substation for easy wire harness assembly according to claim 2, characterized in that: The power source includes a rotating ring (47) fixedly connected to the internal gear ring (46), and the outer wall of the rotating ring (47) is provided with anti-slip texture.

4. A prefabricated substation for easy wire harness assembly according to claim 2, characterized in that: The locking device includes a locking tongue (6) rotatably connected to the inner wall of the mounting ring (45). The outer edge of the inner gear ring (46) is provided with external teeth (461). One end of the locking tongue (6) abuts against the external teeth (461) of the inner gear ring (46). A positioning rod (62) is fixedly connected to the inner wall of the mounting ring (45). A clearance hole (61) is provided on the locking tongue (6) for the positioning rod (62) to pass through. The width of the clearance hole (61) is greater than the diameter of the positioning rod (62). A spring (63) is sleeved on the positioning rod (62). The two ends of the spring (63) abut against the inner wall of the mounting ring (45) and the top surface of the locking tongue (6) respectively, and are used to apply a spring force to the locking tongue (6) to keep it abutting against the external teeth (461).

5. A box-type substation facilitating the bundling of wiring harnesses according to claim 4, characterized in that: The switching device includes a plug rod (51) that is slidably connected to the mounting ring (45). The bottom end of the plug rod (51) passes through the mounting ring (45) and abuts against the top surface of the locking tongue (6). A pressing block (5) is fixedly connected to the top end of the plug rod (51), and a limiting plate (52) is fixedly connected to the bottom end of the plug rod (51).

6. A prefabricated substation for easy wire harness assembly according to claim 1, characterized in that: The clamping plate (43) is a crescent-shaped structure that is concave towards the side facing the wire.

7. A prefabricated substation for easy wire harness assembly according to claim 1, characterized in that: The electrical box (2) has a cable tray opening (21), and a rainproof device is provided at the cable tray opening (21). The rainproof device includes a rainproof sleeve (22) fixedly connected to the cable tray opening (21). The rainproof sleeve (22) is trapezoidal in shape and has a through hole through which the power supply line passes.

8. A prefabricated substation for easy wire harness assembly according to claim 1, characterized in that: Both the bottom surface of the cable box (3) and the box cover (31) are provided with drainage outlets (33).

9. A prefabricated substation for easy wire harness assembly according to claim 1, characterized in that: The inner fixed sleeve of the second cable outlet (32) is fitted with a rubber ring for protecting the wire.

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