A power supply line protection device for a substation

Abstract

The utility model discloses a power supply line protection device of transformer substation belongs to transformer substation technical field, include: bridge, the inner wall of bridge is set up and places the groove, and the quantity of placing groove has multiple and is equidistant distribution, the inside of placing groove is provided with protection component, the upper end of bridge is provided with the cover body, the upper end screw thread connection of cover body has fixed screw rod. The utility model protection component and limiting component can guide cable smooth into the placing groove, ensure that the bending radius of the bending part is always greater than the minimum bending radius allowed, avoid copper core fracture or insulating layer cracking, prevent the stress concentration and fatigue aging of cable bending part.

Description

Technical Field

[0001] This utility model specifically relates to a power supply line protection device for a substation, belonging to the field of substation technology. Background Technology

[0002] In power systems, the protection of power supply lines in substations is a crucial aspect of ensuring safe and stable power transmission. To achieve effective cable management, including dust and moisture prevention, as well as improving overall aesthetics, cable tray systems are widely used for wiring and installation of power supply lines.

[0003] During the patent application process, a search revealed a Chinese patent with patent number CN223156630U: a power supply line protection device for a substation, comprising: a cable tray with internal channels for accommodating cables; several crossbeams sequentially arranged above the cable tray; several cover plates arranged between adjacent crossbeams, with the cover plates fitting against the top of the cable tray; several connectors provided at the bottom of the cover plates; and mounting grooves adapted to the connectors provided above the cable tray; several baffles detachably installed inside the channels, the baffles being used to divide the channels into multiple chambers for accommodating cables. This application, through its detachable cover plate design, makes cable inspection and maintenance more convenient and efficient. Maintenance tasks can be completed by partially opening the cover plates without the need for complete disassembly, significantly saving time and labor costs.

[0004] The above solution uses a cable tray to accommodate the cable during use. However, at the inlet and outlet of the tray, the cable sheath can easily rub against the inner wall of the tray. Over time, this may cause wear on the insulation layer, posing a safety hazard. In addition, the cable laying path is complex and often needs to enter the tray from the bottom, side, or at an angle. When the cable enters the tray, it is easy for it to bend. The cable is under concentrated stress, which can easily lead to fatigue and aging, and the bending point can easily become a high-incidence area for line faults. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a power supply line protection device for substations, thereby achieving the aforementioned objective.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable tray, wherein the inner wall of the cable tray is provided with a placement groove, and the number of placement grooves is multiple and distributed at equal intervals, a protective component is provided inside the placement groove, and a cover is provided at the upper end of the cable tray, and a fixing screw is threadedly connected to the upper end of the cover.

[0007] The protective assembly includes a housing disposed on one side of the cable tray. A toothed ring is rotatably connected to the inner wall of the housing, and a protective tube is fixedly connected to the inner wall of the toothed ring. Multiple limiting holes are opened on the front side of the toothed ring, and the multiple limiting holes are distributed in a circumferential array. A gear is rotatably connected to the inner wall of the housing, and a rotating rod is fixedly connected to the front side of the gear. A handle is fixedly connected to one end of the rotating rod that passes through the housing. A through hole is opened on the rear side of the housing. Two screws are threadedly connected to the front side of the housing, and a limiting assembly is provided on the front side of the housing.

[0008] Furthermore, the limiting component includes a slide rod, which is disposed on the front side of the housing. A pull rod is rotatably connected to the front side of the slide rod via a pivot. A limiting post is fixedly connected to one end of the slide rod that is away from the pull rod and passes through the housing. The slide rod is slidably connected to the housing. A baffle is fixedly connected to the outer wall of the inner end of the slide rod in the housing. A spring is installed on the outer wall of the baffle that is fitted onto the outer wall of the slide rod.

[0009] Furthermore, the limiting post is adapted to the inner wall of the limiting hole, and the limiting post is slidably connected to the limiting hole.

[0010] Furthermore, the gear is located on one side of the gear ring, and the gear meshes with the gear ring.

[0011] Furthermore, the diameter of the through hole is the same as that of the protective tube and is connected to it, and a rubber pad is installed at the opening of the inner wall of the placement groove.

[0012] Furthermore, a protective pad is installed on the inner wall of one end of the protective tube that penetrates the shell. The protective tube is L-shaped and is rotatably connected to the shell.

[0013] Furthermore, two connecting slots are provided on the front side of the cable tray, next to the placement slot, and the screw passes through the housing and is threadedly connected to the inner wall of the connecting slot.

[0014] Beneficial effects:

[0015] The "L"-shaped protective tube in the protection assembly guides the cable smoothly into the placement groove, ensuring that the bending radius at the cable bend is always greater than the minimum allowable bending radius. This prevents the copper core from breaking due to excessive bending or the insulation layer from cracking. Compared to straight grooves, this solves the problems of stress concentration and fatigue aging at cable bends. By turning the handle, the gear rotates, and the gear meshes with the gear ring to drive the protective tube to rotate synchronously. This allows for adjustment of the protective tube's angle, adapting to different cable entry requirements such as from the side, at an angle, or from the bottom, thus improving the device's applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention in its explosive state;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of the shell of this utility model;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the limiting component of this utility model;

[0020] Figure 5 This is a schematic diagram of the shell structure from the rear view of this utility model.

[0021] In the diagram: 1. Cable tray; 2. Placement slot; 3. Fixing screw; 4. Cover; 5. Protective component; 501. Housing; 502. Gear ring; 503. Protective tube; 504. Limiting hole; 505. Gear; 506. Rotating rod; 507. Handle; 508. Through hole; 509. Screw; 6. Limiting component; 601. Slide rod; 602. Pull rod; 603. Limiting post; 604. Baffle; 605. Spring; 201. Rubber pad; 5031. Protective pad; 101. Connecting slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 As shown, a power supply line protection device for a substation includes: a cable tray 1, with a placement groove 2 on the inner wall of the cable tray 1, and the number of placement grooves 2 is multiple and distributed at equal intervals. A protection component 5 is installed inside the placement groove 2. A cover 4 is installed at the upper end of the cable tray 1, and a fixing screw 3 is threadedly connected to the upper end of the cover 4.

[0024] The protection component 5 includes a housing 501 disposed on one side of the cable tray 1. A gear ring 502 is rotatably connected to the inner wall of the housing 501, and a protective tube 503 is fixedly connected to the inner wall of the gear ring 502. Multiple limiting holes 504 are provided on the front side of the gear ring 502, and these holes are arranged in a circumferential array. A gear 505 is rotatably connected to the inner wall of the housing 501, and a rotating rod 506 is fixedly connected to the front side of the gear 505. A handle 507 is fixedly connected to one end of the rotating rod 506 that passes through the housing 501. A through hole 508 is provided on the rear side of the housing 501, and two screws 509 are threadedly connected to the front side of the housing 501. A limiting component 6 is provided on the front side of the housing 501. The protection component 5 can protect the bending points of the cable, preventing bending and fatigue aging.

[0025] The limiting component 6 includes a slide rod 601, which is located on the front side of the housing 501. A pull rod 602 is rotatably connected to the front side of the slide rod 601 via a pivot. A limiting post 603 is fixedly connected to the end of the slide rod 601 that is away from the pull rod 602 and passes through the housing 501. The slide rod 601 is slidably connected to the housing 501. A baffle 604 is fixedly connected to the outer wall of the inner end of the slide rod 601. A spring 605 is installed on the outer wall of the baffle 604 that fits onto the outer wall of the slide rod 601. The limiting component 6 can lock the angle of the protective tube 503, preventing accidental rotation of the protective tube 503 and the toothed ring 502 even if the cable is pulled by external force or subjected to environmental vibration.

[0026] The limiting post 603 is adapted to the inner wall of the limiting hole 504, and the limiting post 603 is slidably connected to the limiting hole 504. By inserting the limiting post 603 into the limiting hole 504, the toothed ring 502 can be prevented from rotating, thus maintaining the stability of the protective tube 503 and preventing the protective tube 503 from shaking.

[0027] Gear 505 is located on one side of gear ring 502, and gear 505 meshes with gear ring 502. The rotation of gear 505 drives the rotation of gear ring 502, which in turn drives the rotation of protective tube 503.

[0028] The diameter of the through hole 508 is the same as that of the protective tube 503 and is connected to it. Rubber pads 201 are installed on the inner wall and opening of the placement groove 2. The identical diameter of the through hole allows the cable to pass through the protective tube 503 and the through hole 508 into the placement groove 2.

[0029] A protective tube 503 penetrates the inner wall of one end of the housing 501 and is fitted with a protective pad 5031. The protective tube 503 is L-shaped and rotatably connected to the housing 501. The protective pad 5031 reduces friction between the cable's outer insulation layer and the opening of the protective tube 503, preventing damage to the insulation layer. The L-shaped protective tube 503 also guides the cable through a smooth transition, ensuring that the bending radius at the cable bend is always greater than the minimum allowable bending radius, thus preventing copper core breakage or insulation layer cracking.

[0030] Two connecting slots 101 are provided on the front side of the cable tray 1, next to the placement slot 2. A screw 509 passes through the housing 501 and is threaded to the inner wall of the connecting slot 101. The housing 501 is fixed to the cable tray 1 by the bolts 509, while aligning the through hole 508 with the placement slot 2.

[0031] The implementation principle of a power supply line protection device for a substation according to an embodiment of this application is as follows: During use, the placement slots 2 in the cable tray 1 provide passage space for cables, facilitating cable accommodation. Multiple placement slots 2 can separate the cables, preventing them from tangling and being squeezed together. A cover 4 can be placed over the cable tray 1 to provide closed protection for the placement slots 2. When cables need to enter the placement slots 2 from different directions, the housing 501 can be fixed to one side of the cable tray 1 using a screw 509, aligning the through hole 508 with the placement slot 2. The cable enters from the outside through the protective tube 503, passes through the through hole 508, and enters the placement slot 2. Simultaneously, the operator can rotate the handle 507 to drive the rotating rod 506 and gear 505 to rotate. The gear 505 meshes with the gear ring 502, driving the gear ring 502 and the protective tube... 503 rotates synchronously until the opening of the protective tube 503 faces the cable inlet direction. When it is necessary to adjust the angle of the protective tube 503, the operator pulls the pull rod 602 outward. The pull rod 602 drives the slide rod 601 to move outward from the housing 501 through the rotating shaft. The slide rod 601 drives the baffle 604 to compress the spring 605. At this time, the limiting post 603 disengages from the limiting hole 504 of the gear ring 502. At this time, the handle 507 can be rotated to drive the gear 505 to rotate and adjust the angle. When locking the angle of the protective tube 503, the pull rod 602 is loosened. The deformation force generated by the compression of the spring 605 pushes the baffle 604, thereby driving the slide rod 601 and the limiting post 603 to move closer to the side of the gear ring 502 and insert into the limiting hole 504, thereby locking the rotation of the gear ring 502 and ensuring that the protective tube 503 always remains at the preset angle.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power supply line protection device for a substation, comprising: The cable tray (1) is characterized in that: the inner wall of the cable tray (1) is provided with a placement groove (2), and the number of placement grooves (2) is multiple and distributed at equal intervals; a protective component (5) is provided inside the placement groove (2); a cover (4) is provided at the upper end of the cable tray (1); and a fixing screw (3) is threadedly connected to the upper end of the cover (4). The protective component (5) includes a housing (501) disposed on one side of the cable tray (1). A toothed ring (502) is rotatably connected to the inner wall of the housing (501). A protective tube (503) is fixedly connected to the inner wall of the toothed ring (502). Multiple limiting holes (504) are opened on the front side of the toothed ring (502), and the multiple limiting holes (504) are arranged in a circumferential array. A gear (505) is rotatably connected to the inner wall of the housing (501). A rotating rod (506) is fixedly connected to the front side of the gear (505). A handle (507) is fixedly connected to one end of the rotating rod (506) that passes through the housing (501). A through hole (508) is opened on the rear side of the housing (501). Two screws (509) are threadedly connected to the front side of the housing (501). A limiting component (6) is provided on the front side of the housing (501).

2. The power supply line protection device for a substation as described in claim 1, characterized in that: The limiting component (6) includes a slide rod (601), which is located on the front side of the housing (501). A pull rod (602) is rotatably connected to the front side of the slide rod (601) via a pivot. A limiting post (603) is fixedly connected to one end of the slide rod (601) that is away from the pull rod (602) and passes through the housing (501). The slide rod (601) is slidably connected to the housing (501). A baffle (604) is fixedly connected to the outer wall of the inner end of the slide rod (601). A spring (605) is installed on the outer wall of the baffle (604) that is sleeved on the outer wall of the slide rod (601).

3. The power supply line protection device for a substation as described in claim 2, characterized in that: The limiting post (603) is adapted to the inner wall of the limiting hole (504), and the limiting post (603) is slidably connected to the limiting hole (504).

4. The power supply line protection device for a substation as described in claim 1, characterized in that: The gear (505) is located on one side of the gear ring (502), and the gear (505) meshes with the gear ring (502).

5. A power supply line protection device for a substation as described in claim 1, characterized in that: The diameter of the through hole (508) is the same as that of the protective tube (503) and is connected to it. The inner wall and opening of the placement groove (2) are fitted with rubber pads (201).

6. The power supply line protection device for a substation as described in claim 1, characterized in that: The protective tube (503) passes through the inner wall of one end of the housing (501) and is fitted with a protective pad (5031). The protective tube (503) is L-shaped and is rotatably connected to the housing (501).

7. A power supply line protection device for a substation as described in claim 1, characterized in that: Two connecting slots (101) are provided on the front side of the bridge frame (1) and next to the placement slot (2). The screw (509) passes through the housing (501) and is threaded to the inner wall of the connecting slot (101).

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