Power distribution cabinet capable of preventing overcurrent fault

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet capable of preventing an overcurrent fault, which comprises an overcurrent fault prevention mechanism comprising a power distribution box. According to the utility model, the interior of the power distribution cabinet is designed into a multi-layer structure through the drawing mechanism, different types of elements are placed on the bottom layer, the middle layer and the upper layer respectively, the vertical space is reasonably utilized, the problem of unreasonable internal space layout of a traditional power distribution cabinet is solved, different types of elements are installed in a layered and isolated manner, electromagnetic interference is reduced, and electrical isolation is ensured; the arrangement of the hollowed-out partition plates not only ensures the electrical isolation among the layers, but also provides a channel for ventilation and heat dissipation, effectively avoids the thermal interference of high-temperature elements on key components such as an overcurrent prevention relay and the like, improves the accuracy of overcurrent fault detection and processing, and can directly pull out the drawing mechanism during maintenance, thereby avoiding the operation in a compact space, and reducing the maintenance cost. The operation difficulty and the risk of new faults caused by misoperation are reduced, and the convenience and safety of maintenance are improved.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, specifically a power distribution cabinet for preventing overcurrent faults. Background Technology

[0002] In modern power systems, distribution cabinets play a crucial role in power distribution, and their operational status directly affects the safety and stability of the entire system. Preventing overcurrent faults is a core aspect among the many functions of distribution cabinets.

[0003] However, current distribution cabinets have some problems. First, the internal space layout lacks rationality, with various electrical components arranged quite compactly. This makes the installation and maintenance of critical components such as overcurrent protection relays extremely difficult. The cramped space restricts the operation of staff, and during operation, even slight carelessness may lead to new faults due to touching other components, thus creating hidden dangers for the normal operation of the power system.

[0004] Meanwhile, due to the compact space, high-temperature components inside the distribution cabinet, such as high-power transformers and frequently operating contactors, are prone to thermal interference with the overcurrent protection relay. This thermal interference can cause the overcurrent protection relay to deviate when detecting current, leading to misjudgments and preventing timely and accurate handling of overcurrent faults, thus threatening the reliable power supply of the power system. Utility Model Content

[0005] The purpose of this utility model is to provide a power distribution cabinet that prevents overcurrent faults, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A distribution cabinet for preventing overcurrent faults includes:

[0008] Overcurrent fault protection mechanisms, including distribution boxes;

[0009] Two pull-out mechanisms are provided, fixed at equal intervals inside the distribution box, which allows personnel to easily move components out of the distribution box for maintenance.

[0010] Several sliding mechanisms are provided, which slide on the pull-out mechanism to enable electrical connection between components;

[0011] The pressing mechanism, fixed to the sliding mechanism, can limit the movement of the sliding mechanism.

[0012] Furthermore, the pull-out mechanism includes:

[0013] There are two slide rails, which are fixedly connected to the inner walls of both sides of the distribution box respectively.

[0014] The perforated partition slides between two guide rails.

[0015] Preferably, the pull-out mechanism includes:

[0016] A set of rotating seats is provided and fixed to the bottom wall of the hollow partition plate at the center. Bolts are rotatably connected between the internal parts of the set of rotating seats.

[0017] The slide rail three is fixed at one end between the outer walls of a set of slide rails one. The bottom of the slide rail three has a threaded hole at the center and is screwed into a bolt.

[0018] Preferably, the pull-out mechanism includes:

[0019] The second slide rail is fixed to the outer wall of one side of the hollow partition plate. The outer wall of the second slide rail has several arc-shaped grooves at equal intervals.

[0020] The second arc-shaped groove is provided in several places, and is equally spaced on the outer wall of the third slide rail.

[0021] Preferably, the sliding mechanism includes:

[0022] The base has two parts, one of which is slidably inserted into the second slide rail, and the other is slidably inserted into the third slide rail;

[0023] The limit bracket is fixed to the outer wall of the base;

[0024] The wire clamp is fixed to one of the bases on the outer wall, located on one side of the limit frame.

[0025] Preferably, the sliding mechanism includes:

[0026] A set of square plates is provided and fixed to the outer wall of one of the bases;

[0027] A set of square tubes is provided and fixed to the outer wall of another base, and the inside of the square tubes is slidably inserted into the square plate;

[0028] Rotary base 2, there are two of them, which are respectively fixed to the outer wall of one end of the square plate and the square tube;

[0029] The V-shaped frame rotates at one end of the rotating seat, and a coil spring is fixedly connected between the outer wall of the V-shaped frame and the outer wall of the rotating seat.

[0030] Preferably, the pressing mechanism includes:

[0031] There are two slide rails, one of which is fixed to the outer wall of each of the two sides of one of the bases.

[0032] The U-shaped frame slides between two slide rails, and a spring is fixedly connected between the outer wall of the U-shaped frame and the inner wall of the slide rails.

[0033] A square rod is fixed to one end of the U-shaped frame.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] 1. The distribution cabinet is designed with a multi-layer structure using a pull-out mechanism. Different types of components are placed in the bottom, middle, and top layers, making reasonable use of vertical space and solving the problem of unreasonable internal space layout in traditional distribution cabinets. Different types of components are installed in isolation on different layers, reducing electromagnetic interference and ensuring electrical isolation. The perforated partitions not only ensure electrical isolation between layers but also provide channels for ventilation and heat dissipation, effectively preventing thermal interference from high-temperature components to key components such as overcurrent protection relays. This improves the accuracy of overcurrent fault detection and handling. Furthermore, the pull-out mechanism can be directly pulled out for maintenance, avoiding operation in a compact space, reducing operational difficulty and the risk of new faults caused by improper operation, and improving the convenience and safety of maintenance.

[0036] 2. The sliding mechanism allows for flexible adjustment of component installation positions, enabling critical components such as overcurrent protection relays to be positioned appropriately, avoiding placement above components with high heat generation. This prevents the heat dissipation mechanism from blowing heat onto the relay, which could cause misjudgments and improves the reliability of overcurrent protection. Furthermore, the limit bracket on the base can be replaced according to the size of the plug or socket, facilitating the installation of electrical connections of different specifications. The insertion and mating of the square plate and square tube, as well as the screwing of the bolts into the three-threaded holes of the slide rail, ensures accurate plug and socket connection, avoiding potential contact problems that may occur when manually pushing the plug, thus improving the stability of the electrical connection.

[0037] 3. The sliding mechanism is released and restored by pressing the U-shaped frame through the pressing mechanism. The operation is simple and convenient. Utilizing the rebound characteristics of springs and coil springs, the sliding mechanism can be quickly and accurately limited and unlocked, ensuring the flexibility and stability of component position adjustment. This design enables efficient operation when adjusting the component position, and at the same time, it can reliably fix the component position after adjustment, improving the practicality and reliability of the entire distribution cabinet structure. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0039] Figure 2 This is a schematic diagram of the internal structure of the distribution box in this utility model;

[0040] Figure 3 This is a schematic diagram of the pull-out mechanism in this utility model;

[0041] Figure 4 This is a schematic diagram of the sliding mechanism and the pressing mechanism in this utility model.

[0042] In the diagram: 100, overcurrent protection mechanism; 110, distribution box; 200, pull-out mechanism; 210, slide rail one; 211, perforated partition; 212, rotating seat one; 213, bolt; 220, slide rail two; 221, arc groove one; 222, slide rail three; 223, arc groove two; 300, sliding mechanism; 310, base; 311, limit frame; 312, square plate; 313, wire clamp; 314, square tube; 320, rotating seat two; 321, V-shaped frame; 322, coil spring; 400, pressing mechanism; 410, slide rail four; 411, square rod; 412, U-shaped frame. Detailed Implementation

[0043] 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.

[0044] Please see Figure 1-4 In this embodiment of the utility model, a power distribution cabinet for preventing overcurrent faults includes: an overcurrent fault prevention mechanism 100, which includes a power distribution box 110; two pull-out mechanisms 200, which are equally spaced and fixed inside the power distribution box 110, allowing personnel to easily remove components from the power distribution box 110 for maintenance; several sliding mechanisms 300, which slide on the pull-out mechanisms 200, enabling electrical connection between components; and a pressing mechanism 400, which is fixed on the sliding mechanisms 300 and limits their movement. The pull-out mechanism 200 includes: two slide rails 210, which are respectively fixedly connected to the inner walls of both sides of the power distribution box 110; a perforated partition 211, which slides between the two slide rails 210; and a rotating seat. 212, which is set up and fixed to the bottom wall of the hollow partition 211 at the center, and the internal rotating seat 212 is rotatably connected by bolts 213. The slide rail 3 222 is fixed to the outer wall of the slide rail 1 210 at one end, and the bottom of the slide rail 3 222 has a threaded hole at the center, which is screwed to the bolt 213. The slide rail 220 is fixed to the outer wall of one side of the hollow partition 211, and the outer wall of the slide rail 220 has several arc-shaped grooves 221 at equal intervals. The arc-shaped grooves 223 are set up and are evenly spaced on the outer wall of the slide rail 3 222. The internal structure of the distribution box 110 is designed as a multi-layer structure by the pull-out mechanism 200. Different types of components are placed in the bottom, middle and top layers, making reasonable use of vertical space.

[0045] The sliding mechanism 300 includes: two bases 310, one of which is slidably inserted into slide rail 220 and the other into slide rail 322; a limiting bracket 311 fixed to the outer wall of the base 310; a wire clamp 313 fixed to one side of the limiting bracket 311 on the outer wall of one of the bases 310; a set of square plates 312 fixed to the outer wall of one of the bases 310; and a set of square tubes 314 fixed to the outer wall of the bases 310. On the outer wall of another base 310, and the inside of the square tube 314 is slidably inserted into the square plate 312, there are two rotating seats 320, which are respectively fixed on the outer wall of one end of the square plate 312 and the square tube 314. The V-shaped frame 321 rotates at one end of the rotating seat 320, and a coil spring 322 is fixedly connected between the outer wall of the V-shaped frame 321 and the outer wall of the rotating seat 320. The sliding mechanism 300 is slidable, so that the installation position of the component can be flexibly adjusted.

[0046] The pressing mechanism 400 includes: two slide rails 410, which are respectively fixed to the outer walls of the two sides of one of the bases 310; a U-shaped frame 412, which slides between the two slide rails 410, and a spring is fixedly connected between the outer wall of the U-shaped frame 412 and the inner wall of the slide rail 410; and a square rod 411, which is fixed to one end of the U-shaped frame 412. The pressing mechanism 400 releases and restores the limit of the sliding mechanism 300 by pressing the U-shaped frame 412, which is simple and convenient to operate.

[0047] Specifically, during operation, the operator first presses down on the U-shaped frame 412 of the pressing mechanism 400. The U-shaped frame 412 moves downward under force, causing the connected square rod 411 to move downward simultaneously. The square rod 411 presses against one end of the V-shaped frame 321, causing the V-shaped frame 321 to rotate around the rotating seat 320. This causes it to separate from the arc groove 221 on the corresponding slide rail 220 or the arc groove 223 on the slide rail 322. At this point, the limit of the sliding mechanism 300 is released, and the operator can then push the sliding mechanism 300 to slide along the guide rail of the pull-out mechanism 200. The installation position of the component is flexibly adjusted to avoid the position above components with high heat output, effectively preventing hot air from blowing onto the relay and causing misjudgment. After the position is adjusted, the person releases the pressure on the U-shaped frame 412. The spring between the U-shaped frame 412 and the slide rail 410 exerts its elasticity, causing the U-shaped frame 412 to return to its original position, driving the square rod 411 to separate from the V-shaped frame 321. At the same time, the V-shaped frame 321 is subjected to the elastic restoring force of the coil spring 322, rotating around the rotating seat 320, and re-aligning with the corresponding arc groove 221 or arc groove 2. 223. After plugging in, the sliding mechanism 300 is limited to its current position. When installing components such as overcurrent protection relays, the limiting bracket 311 on the base 310 of the sliding mechanism 300 is replaced according to the plug or socket size. The plug connecting the incoming and outgoing lines is limited within the limiting bracket 311. One end of the socket of the secondary side of the current transformer and the socket of the control circuit are limited within the limiting bracket 311 opposite to the corresponding plugs. Then, the hollow partition 211 is pushed to send it back to the distribution box 110 along the slide rail 210. During this process, the square plate 312 and another... The square tube 314 is precisely inserted to ensure that the plug and socket can be accurately aligned during movement. When one end of the square plate 312 is fully inserted into the square tube 314, one end of the bolt 213 is in contact with the threaded hole at the bottom of the slide rail 222. The operator uses an electric wrench to turn the bolt 213 to engage with the threaded hole at the bottom of the slide rail 222. As the bolt 213 rotates, it drives the hollow partition 211 to move, thereby enabling multiple plugs on the hollow partition 211 to simultaneously and accurately connect with multiple sockets on the slide rail 222, ensuring the stability of the electrical connection.

[0048] Example 1

[0049] like Figure 3As shown, in this embodiment, the pull-out mechanism 200 includes: two slide rails 210, which are fixedly connected to the inner walls of both sides of the distribution box 110; a perforated partition 211, which slides between the two slide rails 210; a set of rotating seats 212, which are fixed to the bottom wall of the perforated partition 211 at the center, and a bolt 213 is rotatably connected between the two rotating seats 212; a slide rail 222, which is fixed to the outer wall of the set of slide rails 210 at one end, and a threaded hole is opened at the center of the bottom of the slide rail 222, which is screwed to the bolt 213; a slide rail 220, which is fixed to the outer wall of one side of the perforated partition 211, and a number of arc-shaped grooves 221 and arc-shaped grooves 223 are equally spaced on the outer wall of the slide rail 222.

[0050] In this embodiment, the distribution box 110 is designed with a multi-layer structure through a pull-out mechanism 200. Different types of components are placed in the bottom, middle and top layers, making reasonable use of vertical space and solving the problem of unreasonable internal space layout in traditional distribution cabinets. Different types of components are installed in layers with isolation, reducing electromagnetic interference and ensuring electrical isolation. The hollow partition 211 not only ensures electrical isolation between layers, but also provides a channel for ventilation and heat dissipation, effectively avoiding thermal interference from high-temperature components to key components such as overcurrent protection relays, improving the accuracy of overcurrent fault detection and handling. Moreover, the pull-out mechanism 200 can be pulled out directly during maintenance, avoiding operation in a compact space, reducing the difficulty of operation and the risk of new faults caused by improper operation, and improving the convenience and safety of maintenance.

[0051] like Figure 4 As shown, in this embodiment, the sliding mechanism 300 includes: a base 310, of which two are provided, one of which is slidably inserted into slide rail 220 and the other is slidably inserted into slide rail 322; a limiting frame 311, which is fixed to the outer wall of the base 310; a wire clamp 313, which is fixed to the outer wall of one of the bases 310 at one side of the limiting frame 311; a set of square plates 312, which are provided and fixed to the outer wall of one of the bases 310; a set of square tubes 314, which are provided and fixed to the outer wall of the other base 310, and the inside of the square tubes 314 is slidably inserted into the square plates 312; two rotating seats 320, which are respectively fixed to the outer wall of one end of the square plate 312 and the square tube 314; and a V-shaped frame 321, which rotates at one end of the rotating seat 320, and a coil spring 322 is fixedly connected between the outer wall of the V-shaped frame 321 and the outer wall of the rotating seat 320.

[0052] In practical implementation, the sliding mechanism 300 allows for flexible adjustment of the component's installation position. This enables critical components such as the overcurrent protection relay to be positioned appropriately, avoiding areas above components that generate high heat. This prevents the heat dissipation mechanism from blowing heat onto the relay, which could cause misjudgment and improves the reliability of overcurrent protection. Furthermore, the limit bracket 311 on the base 310 can be replaced according to the size of the plug or socket, facilitating the installation of electrical connections of different specifications. The insertion and engagement of the square plate 312 and the square tube 314, as well as the screwing of the bolt 213 into the threaded hole of the slide rail 222, ensure precise insertion of the plug and socket, avoiding potential contact problems that may occur when manually pushing the plug, and improving the stability of the electrical connection.

[0053] Example 2

[0054] like Figure 4 As shown, in this embodiment, the pressing mechanism 400 includes: two slide rails 410, which are respectively fixed to the outer walls on both sides of one of the bases 310; a U-shaped frame 412, which slides between the two slide rails 410, and a spring is fixedly connected between the outer wall of the U-shaped frame 412 and the inner wall of the slide rail 410; and a square rod 411, which is fixed to one end of the U-shaped frame 412.

[0055] In practice, the sliding mechanism 300 is released and restored by pressing the U-shaped frame 412 through the pressing mechanism 400. The operation is simple and convenient. By utilizing the rebound characteristics of the spring and coil spring 322, the sliding mechanism 300 can be quickly and accurately limited and unlocked, ensuring the flexibility and stability of component position adjustment. This design enables efficient operation when adjusting the component position, and at the same time, it can reliably fix the component position after adjustment, improving the practicality and reliability of the entire power distribution cabinet structure.

[0056] 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.

[0057] 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 distribution cabinet for preventing overcurrent faults, characterized in that, include: Overcurrent fault protection mechanism (100), including distribution box (110); Two pull-out mechanisms (200) are provided and are fixed inside the distribution box (110) at equal intervals, which makes it convenient for personnel to move the components out of the distribution box (110) for maintenance; Several sliding mechanisms (300) are provided and slide on the pull-out mechanism (200) to enable electrical connection between components; The pressing mechanism (400) is fixed on the sliding mechanism (300) and can limit the sliding mechanism (300).

2. The distribution cabinet for preventing overcurrent faults according to claim 1, characterized in that, The pull-out mechanism (200) includes: There are two slide rails (210), which are fixedly connected to the inner walls on both sides of the distribution box (110); The perforated partition (211) slides between two slide rails (210).

3. A distribution cabinet for preventing overcurrent faults according to claim 2, characterized in that, The pull-out mechanism (200) includes: A set of rotating seats (212) is provided, which is fixed to the bottom wall of the hollow partition (211) at the center. Bolts (213) are rotatably connected between the internal parts of the set of rotating seats (212). The slide rail three (222) is fixed at one end between the outer walls of a set of slide rail one (210). The bottom of the slide rail three (222) has a threaded hole at the center and is screwed into the bolt (213).

4. A distribution cabinet for preventing overcurrent faults according to claim 3, characterized in that, The pull-out mechanism (200) includes: The slide rail 2 (220) is fixed on the outer wall of one side of the hollow partition (211). The outer wall of the slide rail 2 (220) has several arc-shaped grooves 1 (221) at equal intervals. Several arc-shaped grooves (223) are provided and are equally spaced on the outer wall of slide rail three (222).

5. A distribution cabinet for preventing overcurrent faults according to claim 4, characterized in that, The sliding mechanism (300) includes: The base (310) has two parts, one of which is slidably connected to slide rail two (220), and the other is slidably connected to slide rail three (222); The limiting bracket (311) is fixed to the outer wall of the base (310); A wire clamp (313) is fixed to the outer wall of one of the bases (310) on one side of the limit frame (311).

6. A distribution cabinet for preventing overcurrent faults according to claim 5, characterized in that, The sliding mechanism (300) includes: A set of square plates (312) are provided and fixed to the outer wall of one of the bases (310); A set of square tubes (314) is fixed to the outer wall of another base (310), and the inside of the square tubes (314) is slidably inserted into the square plate (312); Rotating seat 2 (320) is provided in two parts, which are respectively fixed to the outer wall of one end of square plate (312) and square tube (314); V-shaped frame (321) rotates at one end of rotating seat two (320), and a coil spring (322) is fixedly connected between the outer wall of V-shaped frame (321) and the outer wall of rotating seat two (320).

7. A distribution cabinet for preventing overcurrent faults according to claim 6, characterized in that, The pressing mechanism (400) includes: There are two slide rails (410), which are fixed to the outer walls on both sides of one of the bases (310); The U-shaped frame (412) slides between two slide rails (410), and a spring is fixedly connected between the outer wall of the U-shaped frame (412) and the inner wall of the slide rails (410); The square rod (411) is fixed at one end of the U-shaped frame (412).

Images