Wiring channel installation structure for ring main unit

Abstract

The utility model discloses a wiring channel installation structure for a ring main unit, the wiring channel installation structure for the ring main unit comprises a ring main unit body, spacing slide rails and installation blocks, the inner side of the ring main unit is provided with a plurality of spacing slide rails at intervals along the linear direction, each spacing slide rail is internally and movably provided with an installation block through a spacing mechanism, and the spacing slide rails are arranged on the installation blocks. And mounting holes are formed in the outer surfaces of the mounting blocks. The device overcomes the defects that in the prior art, a connecting block of the device cannot move and cannot be adjusted according to a mounting hole of a wiring groove, holes need to be punched again in the wiring groove, mounting steps are increased, and therefore the working efficiency is reduced. According to the cabling channel installation structure for the ring main unit, the connection block can be adjusted according to the installation hole of the cabling channel.

Description

Technical Field

[0001] This utility model relates to the field of ring main units, specifically to a cable tray installation structure for ring main units. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a group of power transmission and distribution equipment (high-voltage switchgear) housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components utilize load switches and fuses. It offers advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories.

[0003] Chinese patent number CN201721416430.7 discloses a cable tray installation structure for a ring main unit. By setting a connecting block, the cable tray is connected to the cabinet in an elevated manner, avoiding contact between the cable tray and the cabinet. The swaying of the cable tray is less likely to affect the cabinet, thus protecting the ring main unit.

[0004] The applicant discovered the following technical problems when implementing the above-mentioned technical solution:

[0005] The connecting block of the device cannot be moved and cannot be adjusted according to the mounting holes on the cable tray. It is necessary to drill new holes in the cable tray, which increases the installation steps and reduces work efficiency.

[0006] Therefore, providing a cable tray installation structure for ring main units where the connecting block can be adjusted according to the mounting holes provided in the cable tray is a problem that this utility model urgently needs to solve. Utility Model Content

[0007] To address the aforementioned technical problems, the purpose of this utility model is to overcome the limitations of existing devices where the connecting block cannot be moved and cannot be adjusted according to the mounting holes on the cable tray. This necessitates drilling new holes in the cable tray, increasing installation steps and reducing work efficiency. Therefore, this invention provides a cable tray installation structure for ring main units where the connecting block can be adjusted according to the mounting holes on the cable tray.

[0008] To achieve the above objectives, this utility model provides a cable tray installation structure for a ring main unit. The cable tray installation structure for the ring main unit includes: a ring main unit body, a limiting slide rail, and an installation block. Several limiting slide rails are spaced apart along a straight line on the inner side of the ring main unit. An installation block is movably installed in each limiting slide rail by a limiting mechanism. An installation hole is provided on the outer surface of the installation block.

[0009] Preferably, the limiting mechanism includes: a rotating screw, a ratchet, a pawl, and a return spring. The rotating screw is threaded through the mounting block and rotatably disposed within the limiting slide rail. One end of the rotating screw is coaxially provided with a ratchet, and one side of the rotating screw is rotatably provided with a pawl that engages with the ratchet via the return spring.

[0010] Preferably, a lever is provided at the end of the pawl away from the ratchet.

[0011] Preferably, a rotating knob is coaxially provided on the outer surface of the ratchet, and the rotating knob is provided with anti-slip texture on its periphery.

[0012] Preferably, the limiting mechanism includes: limiting holes, elastic sheets, and locking connectors. The limiting slide rail is provided with a plurality of limiting holes at intervals along its length on both inner sidewalls. The mounting block has locking posts at its middle at both opposite ends. The elastic sheet is hexagonal, and its two opposite diagonals are respectively fitted onto the locking posts. The elastic sheet is attached to both sides of the mounting block on both inner sidewalls and protrudes from the sidewalls of the mounting block, with locking connectors adapted to the limiting holes.

[0013] Preferably, the mounting block is provided with limiting sliders adapted to the limiting slide rail on both opposite sides.

[0014] Preferably, the mounting block is made of an insulating material.

[0015] According to the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: First, the mounting hole of one of the cable trays is aligned with the mounting hole on any mounting block on one side of the ring main unit, and then installed with bolts. Then, the position of the remaining mounting blocks on the limiting slide rail is adjusted by the limiting mechanism. Next, the remaining mounting holes of the cable trays are aligned with the adjusted mounting holes of the mounting blocks, and then fixed with bolts. Since the mounting blocks are movably set on the limiting slide rail by the limiting mechanism, it is convenient for users to directly install the cable trays without the need for additional drilling. Elevating the cable trays helps heat dissipate more quickly, preventing damage to surrounding components due to overheating. The elevated structure provides additional operating space for adding, removing, replacing, and maintaining cables. If equipment inside the cabinet, such as frequency converters or motor controllers, vibrates during operation, the elevated design can reduce the propagation of vibration along the cabinet, protecting the reliability of precision instruments or connectors. If the cabinet's sealing is insufficient, some cable tray materials, such as plastic, may generate sparks due to friction when in direct contact with the metal cabinet; the elevated design can reduce this risk. The elevated design can also reduce the possibility of liquid seeping into the cable trays, such as when condensate flows down the cabinet walls.

[0016] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a plan view of the cable tray installation structure for a ring main unit provided in a preferred embodiment of this utility model.

[0019] Figure 2 This is a perspective view of the cable tray installation structure for a ring main unit provided in a preferred embodiment of this utility model.

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 This is a plan sectional view of the cable tray installation structure for a ring main unit provided in a preferred embodiment of this utility model.

[0022] Figure 5 This is a partial perspective view of the cable tray installation structure for a ring main unit provided in a preferred embodiment of this utility model.

[0023] Figure 6 This is a partial plan view of the cable tray installation structure for a ring main unit provided in a preferred embodiment of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1-Ring main unit body; 2-Limit slide rail; 3-Mounting block; 301-Snap-fit ​​post; 302-Limit slider; 401-Rotating screw; 40101-Rotating knob; 402-Ratchet; 403-Pawl; 40301-Actuating rod; 501-Limit hole; 502-Elastic sheet; 503-Snap-fit ​​connector. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Additionally, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] Reference Figure 1 A cable tray installation structure for a ring main unit, comprising: a ring main unit body 1, a limiting slide rail 2, and a mounting block 3. Several limiting slide rails 2 are spaced apart along a straight line on the inner side of the ring main unit. A mounting block 3 is movably installed in each limiting slide rail 2 through a limiting mechanism. The outer surface of the mounting block 3 is provided with mounting holes.

[0030] This application first aligns one of the mounting holes on the cable tray with the mounting hole on any mounting block 3 inside the ring main unit 1, and installs it with bolts. Then, the position of the remaining mounting blocks 3 on the limiting slide rail 2 is adjusted by the limiting mechanism. Next, the remaining mounting holes on the cable tray are aligned with the adjusted mounting holes of the mounting blocks 3, and then fixed with bolts. Because the mounting blocks 3 are movably mounted on the limiting slide rail 2 by the limiting mechanism, it allows users to directly install the cable tray without additional drilling. Elevating the cable tray helps... Heat dissipates more quickly, preventing overheating damage to wires and surrounding components. The overhead structure provides extra operating space for adding, removing, replacing, and maintaining cables. If equipment inside the cabinet, such as frequency converters or motor controllers, vibrates during operation, the overhead design can reduce the propagation of vibration along the cabinet, protecting the reliability of precision instruments or connectors. If the cabinet is not well sealed, some cable tray materials, such as plastic, may generate sparks due to friction when in direct contact with the metal cabinet. The overhead design can reduce such risks. The overhead design can also reduce the possibility of liquid seeping into the cable trays, such as when condensate flows down the cabinet wall.

[0031] Reference Figure 2 The limiting mechanism includes a rotating screw 401, a ratchet 402, a pawl 403, and a return spring. The rotating screw 401 is threaded through the mounting block 3 and is rotatably mounted in the limiting slide rail 2. One end of the rotating screw 401 is coaxially provided with the ratchet 402, and one side of the screw is rotatably provided with a pawl 403 that engages with the ratchet 402 via the return spring.

[0032] The initial state of the mounting block 3 is located at one end of the limiting slide rail 2. The mounting block 3 is moved by rotating the rotating screw 401 to fit the mounting hole of the cable tray. The ratchet 402 and pawl 403 mechanism are used to limit the rotation of the rotating screw 401 to prevent the mounting block 3 from deviating. The return spring can be a torsion spring, which provides a continuous clamping force to the pawl 403 to ensure that the pawl 403 and the ratchet 402 are always in close contact and to prevent the pawl 403 from disengaging due to vibration.

[0033] Reference Figure 3 The pawl 403 is provided with a lever 40301 at the end away from the ratchet 402.

[0034] When the ratchet 402 needs to be rotated in the reverse direction, the lever 40301 is manually turned to make the pawl 403 overcome the spring force of the return spring and separate from the ratchet 402. At this time, the ratchet 402 can be rotated in the reverse direction, causing the mounting block 3 to move in the reverse direction. The lever 40301 provides an intuitive physical interface for the operator, allowing the ratchet 402 to be unlocked in the reverse direction without the aid of tools. By directly turning the lever 40301 with the fingers, the spring force of the return spring can be easily overcome, causing the pawl 403 to separate from the ratchet 402 and releasing the locked state. The lever principle design of the lever 40301 can amplify the operating force, making it easy for even women or operators with less strength to unlock.

[0035] Reference Figure 3 The ratchet 402 has a rotating knob 40101 coaxially arranged on its outer surface, and the rotating knob 40101 has anti-slip texture on its periphery.

[0036] This application allows the rotating knob 40101 to rotate the rotating screw 401, eliminating the need for a screwdriver or wrench to turn the ratchet 402, significantly reducing operational complexity. This is especially beneficial in confined cabinet spaces, where manual operation is more flexible and efficient. The anti-slip texture on the knob surface, such as wave patterns, diamond-shaped particles, or a rubber coating, significantly increases hand friction, preventing slippage caused by sweat, oil, or gloves, and ensuring operational stability.

[0037] Reference Figures 4-6 The limiting mechanism includes: limiting holes 501, elastic sheets 502, and snap-fit ​​connectors 503. The limiting slide rail 2 has a plurality of limiting holes 501 spaced apart along its length on its two inner sidewalls. The mounting block 3 has snap-fit ​​posts 301 in the middle of its two opposite ends. The elastic sheet 502 is hexagonal, and its two opposite corners are respectively fitted onto the snap-fit ​​posts 301. The elastic sheet 502 is attached to the two inner sidewalls of the mounting block 3 and has snap-fit ​​connectors 503 that are adapted to the limiting holes 501 on its two sides protruding from the sidewalls of the mounting block 3.

[0038] This application allows for manual movement of the mounting block 3. When the locking connector 503 separates from the limiting hole 501, the hexagonal elastic sheet 502 deforms on both sides until the locking connector 503 engages with the next limiting hole 501, at which point the hexagonal elastic sheet 502 resets. The hexagonal elastic sheet 502, through the symmetrically distributed locking connectors 503 on both sides cooperating with the limiting hole 501, supports bidirectional movement of the mounting block 3, such as left and right or forward and backward, without the need for additional unlocking tools.

[0039] Reference Figure 5 The mounting block 3 is provided with limiting sliders 302 on both sides of the limiting slide rail 2.

[0040] The limiting slider 302 of this application cooperates with the slide rail to form a double guiding constraint, limiting both sides at the same time, ensuring that the mounting block 3 moves in a straight line along the slide rail, and avoiding deviation or jamming caused by force on one side.

[0041] The mounting block 3 is made of insulating material.

[0042] The metal cable trays in this application may form a conductive circuit when in direct contact with the cabinet, which may aggravate electromagnetic interference. After being suspended by the insulating mounting block 3, the current path can be blocked by the insulating connecting block, eliminating the potential difference and reducing interference to sensitive electronic equipment.

[0043] In use, the device provided by this utility model first aligns one of the mounting holes on the cable tray with the mounting hole on any mounting block 3 on one side of the ring main unit 1, and installs it with bolts. Then, the position of the remaining mounting blocks 3 on the limiting slide rail 2 is adjusted by the limiting mechanism. Next, the remaining mounting holes on the cable tray are aligned with the adjusted mounting holes of the mounting blocks 3, and fixed with bolts. Because the mounting blocks 3 are movably mounted on the limiting slide rail 2 by the limiting mechanism, the user can directly install the cable tray without additional drilling. Elevated cable trays help dissipate heat more quickly, preventing damage to surrounding components from overheating. The elevated structure provides extra operating space for adding, removing, replacing, and maintaining cables. If equipment inside the cabinet, such as frequency converters or motor controllers, vibrates during operation, the elevated design can reduce the propagation of vibration along the cabinet, protecting the reliability of precision instruments or connectors. If the cabinet is not well sealed, some cable tray materials, such as plastic, may generate sparks due to friction when in direct contact with the metal cabinet. Elevation can reduce this risk. The elevated design can also reduce the possibility of liquid seeping into the cable trays, such as when condensate flows down the cabinet wall.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0046] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A cable tray installation structure for a ring main unit, characterized in that, The cable tray installation structure for the ring main unit includes: the ring main unit body (1), the limiting slide rail (2) and the mounting block (3). Several limiting slide rails (2) are spaced apart along a straight line on the inner side of the ring main unit. Each limiting slide rail (2) is movably provided with a mounting block (3) through a limiting mechanism. The outer surface of the mounting block (3) is provided with mounting holes. The limiting mechanism includes a rotating screw (401), a ratchet (402), a pawl (403), and a return spring. The rotating screw (401) is threaded through the mounting block (3) and is rotatably disposed in the limiting slide rail (2). One end of the rotating screw (401) is coaxially provided with a ratchet (402), and one side of it is rotatably provided with a pawl (403) that engages with the ratchet (402) via the return spring.

2. The cable routing channel mounting structure for a ring main unit according to claim 1, wherein The pawl (403) is provided with a lever (40301) at the end away from the ratchet (402).

3. The cable routing channel mounting structure for a ring main unit according to claim 1, characterized in that, A rotating knob (40101) is coaxially provided on the outer surface of the ratchet (402), and anti-slip texture is provided on the periphery of the rotating knob (40101).

4. The cable routing channel mounting structure for a ring main unit according to claim 1, characterized in that, The limiting mechanism includes: limiting holes (501), elastic sheets (502), and snap-fit ​​connectors (503). The limiting slide rail (2) has a number of limiting holes (501) spaced apart along its length on its two inner sidewalls. The mounting block (3) has snap-fit ​​posts (301) in the middle of its two opposite ends. The elastic sheet (502) is hexagonal, and its two opposite corners are respectively fitted onto the snap-fit ​​posts (301). The elastic sheet (502) is attached to the two inner sidewalls of the mounting block (3) and protrudes from the sidewalls of the mounting block (3) and is provided with snap-fit ​​connectors (503) that are compatible with the limiting holes (501).

5. The cable routing channel mounting structure for a ring main unit according to claim 1, characterized in that, The mounting block (3) is provided with limiting sliders (302) on both sides of the limiting slide rail (2) respectively.

6. The cable routing channel mounting structure for a ring main unit according to claim 1, wherein The mounting block (3) is made of insulating material.

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