Low-voltage switch cabinet facilitating installation of internal components

By installing support components inside the low-voltage switchgear, and using adjusting rods and guide ramps to quickly separate the horizontal and vertical rods, the problem of time-consuming and labor-intensive component maintenance in existing technologies is solved, achieving more efficient installation and replacement.

CN224502673UActive Publication Date: 2026-07-14ZHEJIANG YUFA ELECTRICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-11
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

When repairing electrical components inside existing low-voltage switchgear, it is necessary to disassemble adjacent equipment or reach into the cabinet, which is time-consuming, labor-intensive, and results in limited space for maintenance operations.

Method used

A support assembly consisting of longitudinal and transverse rods is installed inside the low-voltage switchgear. The transverse and longitudinal rods can be quickly separated by adjusting the rods and guide ramps, facilitating the installation and replacement of components.

Benefits of technology

It improves the maintenance efficiency of components, avoids the limitations of the switch cabinet, and expands the maintenance operation space.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224502673U_ABST
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Abstract

The utility model discloses a kind of low-voltage switchgear of internal component installation convenient for involving switchgear technical field, including control cabinet body, the installation beam of horizontal placement is arranged in the left and right side of control cabinet body, support assembly is arranged in the inside of control cabinet body, support assembly includes longitudinal rod and transverse rod, transverse rod both ends are all set with recess, recess inside movably connected with limit block, the outer end surface of limit block is equipped with the spacing limit pin of being set up in up and down, limit hole for limit pin plug-in is set up on longitudinal rod, the guide inclined plane of being symmetrically set up is provided on the upside and downside of limit block, transverse rod both sides are all set with guide hole, adjusting rod is movably inserted in the inside of guide hole, adjusting rod and transverse rod are connected by reset spring between. The scheme can quickly separate transverse rod and longitudinal rod, transverse rod with component is convenient to take out, can effectively avoid the limitation of switchgear cabinet body, and lead to the case that maintenance operation space is small, further improve the efficiency of component maintenance.
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Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, specifically a low-voltage switchgear that facilitates the installation of internal components. Background Technology

[0002] Low-voltage switchgear, also known as low-voltage distribution cabinet, is a common name for low-voltage complete switchgear and control equipment. It refers to AC and DC voltages below 1000V, consisting of one or more low-voltage switchgear and related control, measurement, signaling, protection, and regulation equipment. As the core equipment of the power distribution system, the installation efficiency, space utilization, and ease of maintenance of its internal components directly affect the reliability of power supply and operation and maintenance costs.

[0003] In existing technologies, maintenance of electrical components inside switchgear requires disassembling adjacent equipment or reaching into the cabinet, which is time-consuming and labor-intensive, especially for replacing deep components. Furthermore, the limited space within the switchgear cabinet itself restricts maintenance operations. To address this, we propose a low-voltage switchgear that facilitates the installation of internal components. Utility Model Content

[0004] The purpose of this utility model is to provide a low-voltage switchgear that facilitates the installation of internal components, in order to solve the problem mentioned in the background art that when repairing electrical components inside the switchgear, it is necessary to disassemble adjacent equipment or lean into the cabinet for operation, especially for replacing deep components, which is time-consuming and labor-intensive, and is easily restricted by the switchgear cabinet, resulting in a small maintenance operation space.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage switchgear for easy installation of internal components, comprising a control cabinet, a door hinged to the side of the control cabinet, horizontally placed mounting beams on both the left and right sides of the control cabinet, a support assembly inside the control cabinet, the support assembly comprising longitudinal rods and transverse rods, the longitudinal rods being fixed to the mounting beams by bolts, the transverse rods being located between adjacent longitudinal rods and perpendicular to each other, both ends of the transverse rods having notches, with limit blocks movably connected inside the notches, and limit pins spaced vertically on the outer end face of the limit blocks, limit holes for inserting the limit pins on the longitudinal rods, guide ramps symmetrically arranged on the upper and lower sides of the limit blocks, guide holes on both the upper and lower sides of the transverse rods, with adjusting rods movably inserted into the guide holes, and the adjusting rods and transverse rods being connected by a return spring.

[0006] Preferably, the adjusting rod and the guide inclined surface are in movable contact, and adjacent adjusting rods are symmetrically arranged on the upper and lower sides of the limiting block.

[0007] Preferably, the center lines of the limiting pin and the adjusting rod are perpendicular to each other, and the limiting pin is disposed between the symmetrical adjusting rods.

[0008] Preferably, the side of one end of the limiting block inserted into the transverse rod is in contact with the inner side of the corresponding notch.

[0009] Preferably, the depth of the notch is greater than the length of the limiting block.

[0010] Preferably, the longitudinal bar has a U-shaped cross-section, and the opening of the longitudinal bar faces the door stop.

[0011] Preferably, the mounting beam, longitudinal rod, and transverse rod are all perpendicular to each other in pairs, and the longitudinal rod is located between the mounting beam and the transverse rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This type of low-voltage switchgear, which facilitates the installation of internal components, features a support assembly inside the switchgear. This assembly consists of longitudinal and transverse rods. Components are installed on the transverse rods. By simultaneously pressing the adjusting rods on both the upper and lower sides, the adjusting rods are inserted into the transverse rods. The return spring is compressed, and through the contact action between the adjusting rod and the guide slope, the limiting block moves from the outside to the inside, thereby causing the limiting pin to retract into the recess. At this point, the transverse and longitudinal rods can be quickly separated. The separation of the transverse rods facilitates their removal from the switchgear, making it easier to repair or replace the components installed on them. By removing the corresponding transverse rods, the maintenance of components installed on the transverse rods can effectively avoid the limitation of the switchgear cabinet, which could result in a small maintenance operating space, further improving the efficiency of component maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view schematic diagram of the present invention;

[0016] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram at point M;

[0017] Figure 4 This is a partial structural diagram of the transverse bar of this utility model;

[0018] Figure 5 This is a schematic diagram of the limiting block structure of this utility model.

[0019] In the diagram: 1. Control cabinet; 2. Support assembly; 21. Longitudinal rod; 210. Limiting hole; 22. Transverse rod; 220. Guide hole; 23. Limiting block; 230. Guide slope; 24. Limiting pin; 25. Adjusting rod; 26. Return spring; 3. Door stop. Detailed Implementation

[0020] 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.

[0021] Example: Please refer to Figure 1-5 This utility model provides a technical solution: a low-voltage switch cabinet that facilitates the installation of internal components, including a control cabinet 1, a door 3 hinged to the side of the control cabinet 1, and horizontally placed mounting beams on both the left and right sides of the control cabinet 1, wherein the mounting beams and the control cabinet 1 are connected by welding.

[0022] Please see Figure 1 and Figure 3 Inside the control cabinet 1, a support assembly 2 is installed. The support assembly 2 includes longitudinal rods 21 and transverse rods 22. The longitudinal rods 21 have a U-shaped cross-section, and their openings face the door 3. The longitudinal rods 21 are U-shaped steel with a specification of U25, forming a U-shaped steel structure. The transverse rods 22 are square steel with a specification of 25 x 25 cm. This design facilitates manufacturing and material sourcing, and also makes drilling easier, thus facilitating the connection of the transverse rods 22.

[0023] Furthermore, the longitudinal rod 21 is fixed to the mounting beam by bolts, the transverse rod 22 is located between adjacent longitudinal rods 21, and the transverse rod 22 and the longitudinal rod 21 are perpendicular to each other. The mounting beam, the longitudinal rod 21 and the transverse rod 22 are all perpendicular to each other, and the longitudinal rod 21 is located between the mounting beam and the transverse rod 22.

[0024] A notch 221 is provided at both ends of the transverse rod 22. A limiting block 23 is movably connected inside the notch 221. The side of the limiting block 23 inserted into the transverse rod 22 is in contact with the inner side of the corresponding notch 221. The depth of the notch 221 is greater than the length of the limiting block 23. The notch 221 facilitates the guidance of the limiting block 23, allowing the limiting block 23 to reciprocate left and right inside the notch 221.

[0025] Furthermore, the outer end face of the limiting block 23 is provided with limiting pins 24 spaced vertically, and the longitudinal rod 21 is provided with limiting holes 210 for inserting the limiting pins 24. The upper and lower sides of the limiting block 23 are symmetrically provided with guide slopes 230, and the adjusting rod 25 is in contact with the guide slopes 230. Adjacent adjusting rods 25 are symmetrically arranged on the upper and lower sides of the limiting block 23. The upper and lower sides of the transverse rod 22 are provided with guide holes 220, and the adjusting rod 25 is movably inserted into the guide holes 220. The adjusting rod 25 and the transverse rod 22 are connected by a return spring 26. The center lines of the limiting pins 24 and the adjusting rods 25 are perpendicular to each other, and the limiting pins 24 are located between the symmetrical adjusting rods 25. In the initial state, due to the elastic return action of the return spring 26, the adjusting rod 25 is inserted into the transverse rod 22, and the lower end of the adjusting rod 25 is attached to the guide slopes 230 on the upper and lower sides of the limiting block 23. Figure 3 As shown, at this time, the limiting pin 24 protrudes from the transverse rod 22; while pressing the adjusting rod 25 causes the adjusting rod 25 to be inserted into the transverse rod 22, the return spring 26 is compressed, and through the contact action of the adjusting rod 25 and the guide inclined surface 230, the limiting block 23 moves from the outside to the inside, thereby driving the limiting pin 24 to retract into the recess 221. At this time, the transverse rod 22 and the longitudinal rod 21 can be quickly separated. Through the separation of the transverse rod 22, it is easier to remove it from the inside of the switch cabinet, which is more conducive to the maintenance or replacement of the components installed on it.

[0026] Working principle: This type of low-voltage switchgear facilitates the installation of internal components. After installation, its state is as follows... Figure 2 and Figure 3 As shown, at this time, the return spring 26 is in a natural extension and retraction state, and the limiting pin 24 is inserted into the limiting hole 210 on the longitudinal rod 21. The insertion of the limiting pins 24 on both sides facilitates the fixation of the transverse rod 22 and the longitudinal rod 21. When disassembling or installing components inside the switch cabinet for maintenance, the adjusting rods 25 on both sides are pressed at the same time, so that the adjusting rods 25 are inserted into the transverse rod 22. The return spring 26 is compressed. Through the contact action between the adjusting rod 25 and the guide slope 230, the limiting block 23 moves from the outside to the inside, thereby driving the limiting pin 24 to retract into the recess 221. At this time, the transverse rod 22 and the longitudinal rod 21 can be quickly separated. The separation of the transverse rod 22 makes it easier to remove it from inside the switch cabinet, which is more conducive to the maintenance or replacement of the components installed on it.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-voltage switchgear for easy installation of internal components, comprising a control cabinet (1), wherein a door (3) is hinged to the side of the control cabinet (1), and horizontally placed mounting beams are provided on both the left and right sides of the control cabinet (1), characterized in that: The control cabinet (1) is equipped with a support assembly (2), which includes a longitudinal rod (21) and a transverse rod (22). The longitudinal rod (21) is fixed to the mounting beam by bolts. The transverse rod (22) is located between adjacent longitudinal rods (21), and the transverse rod (22) and the longitudinal rod (21) are perpendicular to each other. Both ends of the transverse rod (22) are provided with notches (221), and limit blocks (23) are movably connected inside the notches (221). (23) The outer end face is provided with a limiting pin (24) spaced at the top and bottom. The longitudinal rod (21) is provided with a limiting hole (210) for inserting the limiting pin (24). The limiting block (23) is provided with guide slopes (230) symmetrically arranged on the upper and lower sides. The transverse rod (22) is provided with guide holes (220) on both the upper and lower sides. An adjusting rod (25) is movably inserted into the guide hole (220). The adjusting rod (25) and the transverse rod (22) are connected by a return spring (26).

2. The low-voltage switchgear according to claim 1, characterized in that: The adjusting rod (25) and the guide slope (230) are in active contact, and adjacent adjusting rods (25) are symmetrically arranged on the upper and lower sides of the limiting block (23).

3. A low-voltage switchgear for easy installation of internal components according to claim 1, characterized in that: The center lines of the limiting pin (24) and the adjusting rod (25) are perpendicular to each other, and the limiting pin (24) is located between the adjusting rods (25) symmetrically.

4. A low-voltage switchgear for easy installation of internal components according to claim 1, characterized in that: The side of one end of the limiting block (23) inserted into the transverse rod (22) is in contact with the inner side of the corresponding notch (221).

5. A low-voltage switchgear for easy installation of internal components according to claim 1, characterized in that: The depth of the notch (221) is greater than the length of the limiting block (23).

6. A low-voltage switchgear for easy installation of internal components according to claim 1, characterized in that: The longitudinal rod (21) has a U-shaped cross section, and the opening of the longitudinal rod (21) faces the door (3).

7. A low-voltage switchgear for easy installation of internal components according to claim 1, characterized in that: The mounting beam, longitudinal rod (21) and transverse rod (22) are all perpendicular to each other, and the longitudinal rod (21) is located between the mounting beam and the transverse rod (22).