Layered equipment mounting mechanism for alternating-current low-voltage power distribution cabinet

Abstract

A layered equipment installation mechanism for an AC low-voltage power distribution cabinet belongs to the technical field of power distribution cabinet auxiliary equipment and is provided with an electric leakage detection circuit and adjustable fixing equipment. The adjustable fixing equipment comprises a movable plate, a vertical pipe and a movable column; the lower end of the movable column and the upper part of the vertical pipe are mounted together; each movable plate is matched with a bearing seat and a guide pipe; two sides of the movable plate are respectively mounted on the inner sides of the two bearing seats, the other two sides of the movable plate are respectively mounted on the inner sides of the two guide pipes, an adjusting pipe is mounted in a bearing inner ring of each bearing seat, and the two bearing seat adjusting pipes are respectively connected with the outer sides of the two vertical pipes through threads. The two guide pipes movably sleeve the outer sides of the other two vertical pipes respectively, and electrical equipment, needing to be installed, of the power distribution cabinet is fixedly installed on the multiple movable plates; the storage battery and the electric leakage detection circuit are installed in the element box and are electrically connected. Electrical equipment required by the power distribution cabinet can be installed after the height of the movable plate is adjusted according to needs, and electric shock accidents are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for power distribution cabinets, and in particular to a layered equipment installation mechanism for AC low-voltage power distribution cabinets. Background Technology

[0002] A distribution cabinet is a widely used electrical device and serves as the final stage of a power distribution system. Distribution cabinets are typically used in situations where loads are relatively dispersed and there are few circuits. During operation, they distribute electrical energy from a specific circuit of the upstream distribution equipment to the nearest load and provide protection and control functions for the load.

[0003] With technological advancements, the functions of power distribution cabinets have become increasingly sophisticated. For example, the authorized patent in my country, patent number "201620024277.2" entitled "New Type Power Distribution Cabinet," states that "the beneficial effects of this utility model are: the safety power distribution cabinet, through a slot on the edge of the cabinet and a switch inside the slot, allows the conductive block on the cabinet door to contact and disconnect with the switch. When the cabinet door is opened, the circuit is broken, ensuring excellent safety. A cooling fan on one side of the cabinet body, in conjunction with a temperature sensor and controller, automatically dissipates heat according to the cabinet body's temperature. A desiccant layer inside the cabinet maintains a dry working environment, improving both the cabinet's efficiency and lifespan." As can be seen, although the aforementioned patent achieves the above-mentioned objectives, like other power distribution cabinets in the field, it still suffers from the following problems due to structural limitations. Firstly, the internal electrical equipment is typically fixed inside the distribution cabinet's casing or on internal partitions. Because the location of the electrical equipment is fixed, there's a risk of electric shock if other electrical equipment needs to be installed inside (e.g., the distribution cabinet lacks temperature and humidity alarms, but the actual power supply area has a large load and high humidity, requiring temperature and humidity alarms to promptly alert staff when the load is too high or temperature and humidity are abnormal, thus extending the lifespan of the distribution cabinet and its electrical equipment). Secondly, the distribution cabinet lacks leakage current detection and power disconnection functions. Therefore, if the casing becomes conductive due to various reasons (such as leakage from other electrical equipment) without the staff's knowledge, there is a possibility of electric shock from touching the casing. Utility Model Content

[0004] To overcome the shortcomings of existing distribution cabinets due to structural limitations, as described in the background, this utility model provides a collaborative distribution cabinet that can be conveniently and permanently installed inside the distribution cabinet as needed. It also allows for easy adjustment of the height of multiple partitions to facilitate the installation of other electrical equipment. Furthermore, it can immediately alert relevant personnel and disconnect the main power supply to the distribution cabinet in the event of a leakage, preventing electric shock accidents. This is a layered equipment installation mechanism for AC low-voltage distribution cabinets.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A layered equipment installation mechanism for AC low-voltage distribution cabinets includes a battery, a leakage current detection circuit, and adjustable fixing devices. The adjustable fixing devices include movable plates, risers, and movable columns. Multiple risers, movable columns, and movable plates are included. The risers have internal threads on their inner sides, and at least two risers have external threads on their outer sides. The movable columns have external threads, and their lower ends are threaded together with the upper parts of the risers. Each movable column has a support plate installed at its upper end and the lower end of the riser. Each movable plate is equipped with at least two bearing seats and two guide tubes. Two support plates are installed on each of the two sides of each movable plate. On the outer side of the bearing housing, the other two sides of each movable plate are respectively installed on the outer sides of two guide tubes. An internal threaded adjusting tube is installed in the inner ring of the bearing of each bearing housing. Multiple vertical tubes are vertically distributed in the cabinet of the distribution cabinet. The adjusting tubes of the two bearing housings are respectively threaded to the outer sides of two of the vertical tubes. The two guide tubes are respectively movably sleeved on the outer sides of the other two vertical tubes. The electrical equipment to be installed in the distribution cabinet is fixedly installed on multiple movable plates. The battery and leakage detection circuit are installed in the component box. The signal output terminal of the leakage detection circuit is electrically connected to the two contacts under the test button of the leakage protection device of the distribution cabinet.

[0007] Furthermore, the support plates at the upper ends of the multiple movable columns and the support plates at the lower ends of the multiple risers are in close contact with each other at the upper and lower ends of the cabinet.

[0008] Furthermore, the upper side of the upper support plate of the movable column and the lower side of the lower support plate of the riser are respectively provided with anti-slip teeth.

[0009] Furthermore, the inner diameter of the guide tube is larger than the outer diameter of the riser.

[0010] Furthermore, an adjustment seat is installed on the outer side of the lower end of the adjustment tube.

[0011] Furthermore, the leakage current detection circuit includes an electrically connected resistor, a silicon controlled rectifier (SCR), an LED display screen, and a relay. One end of the resistor is connected to the outer side of the distribution cabinet, and the other end is connected to the control electrode of the SCR. The cathode of the SCR is connected to the positive power input terminal of the LED display screen and the relay, and the LED display screen is connected to the negative power input terminal of the relay.

[0012] The beneficial effects of this utility model are as follows: When used in conjunction with a distribution cabinet, the adjustable and fixed equipment can be easily installed inside the cabinet, and the height of the movable plate is adjustable. This allows for the installation of the necessary electrical equipment after adjusting the height of the movable plate as needed. Under the action of the leakage current detection circuit, when a leakage occurs in the distribution cabinet, it can immediately alert relevant personnel and disconnect the power output from the distribution cabinet, effectively preventing electric shock accidents. Based on the above, this utility model has good application prospects. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure between a part of this utility model and the power distribution cabinet.

[0015] Figure 2 This is a partial structural schematic diagram of the present invention.

[0016] Figure 3 This is the circuit diagram of this utility model. Detailed Implementation

[0017] Figure 1 , 2As shown in Figure 3, a layered equipment installation mechanism for AC low-voltage distribution cabinets includes a power module U1, a battery G1, a leakage current detection circuit 1, and an adjustable fixing device. The adjustable fixing device includes a movable plate 21, a riser 22, and a movable column 23. There are four risers 22 and four movable columns 23. The four risers 22 have internal threads on their inner sides, and two of the risers 22 have external threads on their outer sides. The movable columns 23 have external threads, and the lower end of the movable column 23 is threaded through the external thread. The upper end of each movable column 23 is screwed into the internal thread of the riser 22 and installed together with the upper part of the riser 22. A support plate 24 is welded to the upper end of each movable column 23 and the lower end of the riser 22. There are four movable plates 21, each equipped with two bearing seats 25 and a guide tube 26. The rear left end and the front right end of each movable plate 24 are welded to the inner side of the outer surface of the two bearing seats 25, respectively. The front left end and the rear right end of each movable plate 23 are welded to the inner side of the outer surface of the two guide tubes 26, respectively. Each bearing housing 25 has an internally threaded adjusting tube 27, with a height greater than the bearing housing height, tightly fitted inside the bearing inner ring. Four vertical tubes 22 are vertically distributed inside the distribution cabinet 3. The adjusting tubes 27 of the two bearing housings are respectively threaded to the outside of two of the vertical tubes 22 at the left rear and right front. Two guide tubes 26 are respectively movably sleeved on the outside of the other vertical tubes 22 at the left front and right rear. The electrical equipment to be installed in the distribution cabinet 3 is fixedly installed on four movable plates 21. The power module U1, battery G1, and leakage detection circuit 1 are installed on the circuit board inside the component box 4. The component box 4 is fixedly installed on the upper outside of the distribution cabinet body 3. The power input terminals 1 and 2 of the power module U1 are connected to the two AC 220V poles via wires. The power output terminals 3 and 4 of the power module U1 are connected to the two poles of the battery G1, the other end of the power switch S1 at the power input terminal of the leakage detection circuit, and the negative power input terminal of the LED display screen via wires.

[0018] Figure 1 , 2As shown in Figure 3, the support plates 24 at the upper ends of the four movable columns 23 and the support plates 24 at the lower ends of the four risers 22 are in close contact with each other at the upper and lower ends of the cabinet. The upper side of the support plate at the upper end of the movable column and the lower side of the support plate at the lower end of the riser have anti-slip teeth 28 (for better anti-slip and fixing). The inner diameter of the guide tube 26 is slightly larger than the outer diameter of the riser 22. A rectangular adjustment seat 29 is welded to the outer side of the lower end of the adjustment tube. The leakage current detection circuit includes a resistor R1, a silicon controlled rectifier (SCR) VS, a power switch S1, an LED display screen, and a relay J1 connected by circuit board wiring. The front end of the LED display screen is located outside the front end of the component box 4. One end of the resistor R1 is connected to the outer end of the cabinet T of the distribution cabinet 1 by a wire. One end of the power switch S1 is connected to the anode of the SCR VS, and the other end of the resistor R1 is connected to the control electrode of the SCR VS. The cathode of the SCR VS is connected to the positive power input terminal of the LED display screen and the relay J1. The negative power input terminal of the relay J1 is connected to the negative power input terminal of the LED display screen. The signal output terminal of the leakage current detection circuit, the control contact terminal and the normally open contact terminal of the relay J1, and the two contacts K under the test button of the leakage current protector DL ​​in the distribution cabinet are connected together by wires. Figure 3 In this application, power module U1 is a finished product of AC 220V to DC 12V power module; battery G1 is a 12V / 10Ah lithium battery (normally the power module floats and charges the battery to ensure that the leakage detection circuit can still operate normally after the power distribution cabinet is powered off); resistor R1 has a resistance of 4MΩ; thyristor VS is model MCR100-1; relay J1 is model DC12V; and the LED display screen is the LED display screen body with text display function. The above electrical components are mature technologies and will not be described in detail in this application.

[0019] Figure 1 , 2As shown in Figure 3, this new type of collaborative power distribution cabinet 1 is used in application. Adjustable fixed equipment can be easily installed inside the power distribution cabinet, and the height of the movable plate 21 is adjustable. This allows for easier installation of electrical equipment (such as temperature alarms and humidity alarms) after adjusting the height of the movable plate 21 as needed. Specifically, when the operator rotates the four movable columns 23 counterclockwise, the four movable columns 23 move upwards. This allows the support plates 24 on the upper part of the four movable columns 23 and the support plates 24 on the lower part of the four risers 22 to effectively fix themselves to the upper and lower ends of the cabinet, thus securing the adjustable fixed equipment as a whole. When the operator rotates the four movable columns 23 clockwise, the four movable columns 23 move downwards. This allows the support plates 24 on the upper part of the four movable columns 23 and the support plates 24 on the lower part of the four risers 22 to separate from the upper and lower ends of the cabinet, allowing the adjustable fixed equipment to be moved or removed. When the staff rotates the adjusting seat 29 counterclockwise or clockwise by hand (due to the bearing seat, the movable plate will not rotate, ensuring that the movable plate will only move up or down), the two adjusting tubes 27 move up or down along the external thread of the riser 22 via the internal thread (the guide tube 26 moves up or down along the other two risers). In this way, one or more movable plates 21 will rise or fall in height. After the adjustment is in place, the adjusting seat 29 will no longer be rotated. After the 220V AC power enters the power input terminal of the power module U1, the power module U1 outputs a stable 12V DC power supply from pins 3 and 4, which enters the leakage detection circuit (power switch S1 is open). When there is no leakage in the distribution cabinet 3, there is no power input to the control electrode of the thyristor VS. The thyristor VS will not be triggered to conduct, and the LED display will not be powered on to issue a warning signal, indicating that there is no leakage in the distribution cabinet. When distribution cabinet 3 leaks current, the leakage current is reduced and current limited by resistor R1, triggering the conduction of thyristor VS. Consequently, the LED display screen will be energized and display a prominent "Leakage, Power Off" message to nearby personnel. Simultaneously, relay J1 will be energized and its control contact and normally open contact will close. This will connect the two contacts K under the test button of the leakage current protector DL ​​in the distribution cabinet. Under the function of the leakage current protector itself, the leakage current protector will trip, and the distribution cabinet will no longer output power. Through the above, when a leakage occurs in the distribution cabinet, relevant personnel can be alerted immediately, effectively preventing electric shock accidents.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0021] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A layered equipment installation mechanism for an AC low-voltage distribution cabinet, comprising a storage battery, characterized in that, It also features a leakage current detection circuit and an adjustable fixing device; the adjustable fixing device includes a movable plate, a riser, and a movable column; there are multiple risers, movable columns, and movable plates, with internal threads on the inner side of multiple risers and external threads on the outer side of at least two risers, and external threads on the movable columns. The lower end of the movable column and the upper part of the riser are threaded together. A support plate is installed at the upper end of each movable column and the lower end of the riser, and each movable plate is equipped with at least two bearing seats and two guide tubes; two sides of each movable plate are respectively installed on the outer side of the seat of two bearing seats, and each movable plate... The other two sides of the plate are respectively installed on the outside of two guide tubes. Each bearing seat has an internal threaded adjusting tube installed in the inner ring of the bearing. Multiple vertical tubes are vertically distributed in the cabinet of the distribution cabinet. The adjusting tubes of the two bearing seats are respectively connected to the outside of two of the vertical tubes by threads. The two guide tubes are respectively movably sleeved on the outside of the other two vertical tubes. The electrical equipment to be installed in the distribution cabinet is fixedly installed on multiple movable plates. The battery and leakage detection circuit are installed in the component box. The signal output terminal of the leakage detection circuit is electrically connected to the two contacts under the test button of the leakage protection device of the distribution cabinet.

2. The layered equipment installation mechanism for AC low-voltage distribution cabinets according to claim 1, characterized in that, The support plates at the top of the multiple movable columns and the support plates at the bottom of the multiple risers are in close contact at the top and bottom of the cabinet.

3. The layered equipment installation mechanism for AC low-voltage distribution cabinets according to claim 1, characterized in that, The upper side of the support plate at the top of the movable column and the lower side of the support plate at the bottom of the riser are respectively equipped with anti-slip teeth.

4. The layered equipment installation mechanism for AC low-voltage distribution cabinets according to claim 1, characterized in that, The inner diameter of the guide tube is larger than the outer diameter of the riser.

5. A layered equipment installation mechanism for AC low-voltage distribution cabinets according to claim 1, characterized in that, An adjustment seat is installed on the outer side of the lower end of the regulating pipe.

6. The layered equipment installation mechanism for AC low-voltage distribution cabinets according to claim 1, characterized in that, The leakage current detection circuit includes an electrically connected resistor, a thyristor, an LED display, and a relay. One end of the resistor is connected to the outside of the distribution cabinet, and the other end is connected to the control electrode of the thyristor. The cathode of the thyristor is connected to the positive power input terminal of the LED display and the relay, and the LED display is connected to the negative power input terminal of the relay.

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