Drawing type wiring low-voltage cabinet

Abstract

The utility model relates to a drawing type wiring low-voltage cabinet, which comprises a cabinet body divided into a drawer chamber, a secondary cable chamber, a cable incoming and outgoing line chamber and a bus chamber, the secondary cable chamber is arranged on the right side of the drawer chamber, and the cable incoming and outgoing line chamber is arranged on the rear side of the drawer chamber and the secondary cable chamber. The bus chamber is arranged on the upper sides of the drawer chamber, the secondary cable chamber and the cable inlet and outlet chamber, a terminal strip capable of sliding back and forth is installed in the secondary cable chamber through a guide rail mechanism, the guide rail mechanism comprises guide pieces fixed on the cabinet body at intervals up and down, the guide pieces are provided with sliding pieces matched with the guide pieces, and the terminal strip is fixed at the front ends of the sliding pieces. A terminal side wire harness connected with the terminal strip is correspondingly fixed on the guide piece and the sliding piece through two fixing points, the terminal side wire harness between the two fixing points forms a U shape, and the length of the terminal side wire harness between the two fixing points is greater than or equal to the maximum sliding distance of the sliding piece relative to the guide piece. The LED lamp has the advantages of simple structure, convenience in maintenance and good heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to an electrical device, specifically a pull-out low-voltage switchgear. Background Technology

[0002] With the continuous changes in the operating environment and space of power systems, the performance and size requirements for low-voltage switchgear are becoming increasingly stringent. Existing low-voltage drawer-type outgoing switchgear with a cabinet depth of ≤600mm is limited by space, resulting in the inability to separate primary and secondary wiring harnesses. The secondary wiring harness is usually routed close to the vertical busbar channel, causing primary and secondary wiring harnesses and other components to converge at the back of the cabinet. This not only affects heat dissipation but also makes customer wiring and subsequent maintenance inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a pull-out wiring low-voltage switchgear, which has the advantages of simple structure, low cost, convenient maintenance and good heat dissipation.

[0004] To address the problems existing in the prior art, this utility model provides a pull-out type low-voltage switchgear, including a cabinet body divided into a drawer compartment, a secondary cable compartment, a cable inlet / outlet compartment, and a busbar compartment. The secondary cable compartment is arranged side-by-side on the right side of the drawer compartment, the cable inlet / outlet compartment is located behind the drawer compartment and the secondary cable compartment, and the busbar compartment is located above the drawer compartment, the secondary cable compartment, and the cable inlet / outlet compartment. A terminal block that can slide back and forth is installed in the secondary cable compartment via a guide rail mechanism. The guide rail mechanism includes guide members fixed vertically and horizontally on the cabinet body, and sliding members that cooperate with the guide members. The terminal block is fixed to the front end of the sliding member. The terminal side wire harness connected to the terminal block is fixed to the guide member and the sliding member through two fixed points, forming a U-shape between the two fixed points. The length of the terminal side wire harness between the two fixed points is greater than or equal to the maximum sliding distance of the sliding member relative to the guide member.

[0005] Furthermore, in this utility model, a pull-out wiring low-voltage cabinet is provided, wherein the guide is provided with a C-shaped groove, and the sliding member is fitted into the groove of the guide.

[0006] Furthermore, in this utility model, a pull-out wiring low-voltage cabinet is provided, wherein the front end of the guide member is provided with an anti-disengagement block, and the rear end of the sliding member is provided with a bolt hole, the bolt hole being used to fix an anti-disengagement limiting member that cooperates with the anti-disengagement block by bolts.

[0007] Furthermore, in this utility model, a pull-out wiring low-voltage cabinet is provided, wherein the front side of the secondary cable compartment is hinged to an openable door panel, and the rear side of the secondary cable compartment is fixed with a partition plate, the partition plate having spaced through holes.

[0008] Furthermore, in this utility model, a pull-out wiring low-voltage cabinet is provided, wherein three guide members are provided, and a support rod corresponding to the guide member is provided on the right side of the secondary cable compartment of the cabinet, and each guide member is horizontally fixed on the corresponding support rod.

[0009] Furthermore, this utility model provides a pull-out wiring low-voltage cabinet, wherein multiple drawer units are installed in the drawer compartment, each drawer unit includes a drawer, an operating mechanism is installed in the drawer, and the operating mechanism is connected to a plug-in contact fixed to the rear side of the drawer.

[0010] Furthermore, this utility model provides a pull-out wiring low-voltage cabinet, wherein the cabinet body includes a frame, the frame is assembled from profiles, and the profiles are provided with modular holes.

[0011] Compared with the prior art, this utility model of a pull-out wiring low-voltage cabinet has the following advantages: This utility model sets up a cabinet body, dividing it into a drawer compartment, a secondary cable compartment, a cable inlet / outlet compartment, and a busbar compartment. The secondary cable compartment is arranged side-by-side on the right side of the drawer compartment, the cable inlet / outlet compartment is located behind the drawer and secondary cable compartments, and the busbar compartment is located above the drawer, secondary cable, and cable inlet / outlet compartments. In the secondary cable compartment, a terminal block that can slide back and forth is installed via a guide rail mechanism. The guide rail mechanism has guide members fixed vertically and horizontally on the cabinet body, and sliding members that cooperate with the guide members are provided on the guide members. The terminal block is fixed to the front end of the sliding member. The terminal side wire harness connected to the terminal block is fixed to the guide member and the sliding member through two fixed points, forming a U-shape between the two fixed points. The length of the terminal side wire harness between the two fixed points is greater than or equal to the maximum sliding distance of the sliding member relative to the guide member. This results in a simple, low-cost, easy-to-maintain, and heat-dissipating pull-out low-voltage switchgear. Compared with existing technologies, this invention divides the cabinet into a drawer compartment, a secondary cable compartment, a cable inlet / outlet compartment, and a busbar compartment. In the secondary cable compartment, a sliding terminal block is installed via a guide rail mechanism. The terminal side wiring harness is fixed to the guide and sliding components of the guide rail mechanism at two fixed points. This achieves separation of the primary and secondary systems, improving heat dissipation and safety reliability. Furthermore, the terminal block can be pulled out of the cabinet for wiring operations, enhancing ease of operation and maintenance without causing wiring harness confusion. It can be widely used in various low-voltage power distribution systems in power plants, substations, industrial and mining enterprises, and municipal construction, with particularly significant advantages for low-voltage outlet switchgear with a cabinet depth ≤600mm, improving power supply reliability.

[0012] The present invention provides a detailed description of a pull-out wiring low-voltage cabinet with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1This is a front view of a pull-out wiring low-voltage cabinet according to the present invention;

[0014] Figure 2 This is an isometric view of a pull-out wiring low-voltage cabinet of this utility model with the terminal block located in the cabinet body;

[0015] Figure 3 This is an isometric view of a pull-out low-voltage switchgear according to the present invention when the terminal block is pulled out;

[0016] Figure 4 for Figure 3 A magnified view of a portion of position A in the middle;

[0017] Figure 5 This is an isometric view of the cabinet in this utility model;

[0018] Figure 6 This is a front view of the terminal block and terminal side wiring harness in this utility model;

[0019] Figure 7 This is a left view of the terminal block and terminal side wiring harness in this utility model;

[0020] Figure 8 This is an isometric view of the terminal block and terminal side wiring harness in this utility model;

[0021] Figure 9 This is a top view of the drawer unit in this utility model;

[0022] Figure 10 This is an isometric view of the drawer unit in this utility model. Detailed Implementation

[0023] First, it should be noted that the directional terms such as up, down, left, right, front, and back mentioned in this utility model are only descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this utility model.

[0024] like Figures 1 to 10The present invention discloses a specific embodiment of a pull-out wiring low-voltage switchgear, comprising a cabinet 1, which is divided into a drawer compartment 11, a secondary cable compartment 12, a cable inlet / outlet compartment 13, and a busbar compartment 14. The secondary cable compartment 12 is arranged side by side on the right side of the drawer compartment 11, the cable inlet / outlet compartment 13 is arranged on the rear side of the drawer compartment 11 and the secondary cable compartment 12, and the busbar compartment 14 is arranged on the upper side of the drawer compartment 11, the secondary cable compartment 12, and the cable inlet / outlet compartment 13. In the secondary cable compartment 12, a terminal block 3 that can slide back and forth is installed through a guide rail mechanism 2. The guide rail mechanism 2 is equipped with guide members 21 that are fixed at intervals on the cabinet 1. A sliding member 22 that cooperates with the guide member 21 is set on the guide member 21. The terminal block 3 is fixed to the front end of the sliding member 22. The terminal side wire harness 4 connected to the terminal block 3 is fixed to the guide member 21 and the sliding member 22 through two fixed points, so that the terminal side wire harness 4 between the two fixed points forms a U-shape. The length of the terminal side wire harness 4 between the two fixed points is greater than or equal to the maximum sliding distance of the sliding member 22 relative to the guide member 21, so as not to affect the movement of the terminal block 3.

[0025] The above configuration constitutes a simple, low-cost, easy-to-maintain, and heat-dissipating pull-out low-voltage switchgear. Compared with the prior art, this utility model divides the cabinet 1 into a drawer compartment 11, a secondary cable compartment 12, a cable inlet / outlet compartment 13, and a busbar compartment 14. In the secondary cable compartment 12, a sliding terminal block 3 is installed in the guide rail mechanism 2. The terminal side wiring harness 4 is fixed to the guide member 21 and the sliding member 22 of the guide rail mechanism 2 through two fixed points. On the one hand, it achieves the separation of the primary and secondary systems, improves the heat dissipation effect and safety reliability. On the other hand, it can pull out the terminal block 3 from the cabinet 1 for wiring operations, which improves the convenience of operation and maintenance and does not cause the terminal side wiring harness 4 to become messy. It can be widely used in various low-voltage power distribution systems such as power plants, substations, industrial and mining enterprises, and municipal construction. In particular, it has more obvious advantages for low-voltage outlet cabinets with a cabinet depth ≤600mm, which improves the reliability of power supply. It should be noted that the components and wiring methods of the low-voltage switchgear are well known to those skilled in the art. Drawer compartment 11 is used to install multiple push-pull drawer units 5, cable inlet / outlet compartment 13 is used to arrange vertical busbar channels and cable inlet / outlet lines, and busbar compartment 14 is used to arrange busbars and extend to the vertical busbar channel.

[0026] As an optimized solution, this specific embodiment adopts the following sliding fit structure for the guide member 21 and the sliding member 22: a C-shaped groove is provided on the guide member 21, and the sliding member 22 is snapped into the groove of the guide member 21. This configuration has the characteristics of simple structure, easy processing, and stable operation. To prevent the terminal block from falling off and being damaged, this specific embodiment provides an anti-detachment block 211 at the front end of the guide member 21. Correspondingly, a bolt hole 221 is provided at the rear end of the sliding member 22, and an anti-detachment limiting member (not shown in the figure) that cooperates with the anti-detachment block 211 is fixed at the bolt hole 221 by bolts.

[0027] In a specific embodiment, this invention features an openable door panel 121 hinged to the front of the secondary cable compartment 12, and a partition plate 122 fixed to the rear of the secondary cable compartment 12. The partition plate 122 has spaced through holes 123, allowing the terminal-side wire harness 4 to pass through the through holes 123 and extend into the cable entry / exit compartment 13 to connect with the corresponding plug-in. In another specific embodiment, this invention provides three guide members 21, and a support rod 124 corresponding to the guide member 21 is provided on the right side of the secondary cable compartment 12 of the cabinet 1, so that each guide member 21 is horizontally fixed to its corresponding support rod 124.

[0028] In a specific embodiment, the drawer unit 5 of this invention adopts the following structure: a drawer 51 is provided, an operating mechanism 52 is installed in the drawer 51, and the operating mechanism 52 is connected to a plug-in contact 53 fixed to the rear side of the drawer 51, so that it can be plugged into the vertical busbar channel through the plug-in contact 53. In a specific embodiment, to facilitate assembly and improve the versatility and standardization of components, the cabinet 1 adopts a modular assembly structure, that is, the frame of the cabinet 1 is assembled using profiles, and modular holes are provided on the profiles to facilitate the installation of components. In practical applications, this invention should also provide corresponding side panels on the left, right, rear, lower, and upper sides of the frame of the cabinet 1 to improve the protective effect.

[0029] Practical application has shown that the pull-out wiring low-voltage cabinet provided by this utility model can produce the following beneficial effects: 1. This utility model adopts a pull-out wiring design, which can effectively solve the problems of heat dissipation, client wiring, and later maintenance caused by the primary and secondary wiring harnesses and other functional components being gathered at the back of the cabinet; 2. The whole cabinet adopts a modular assembly structure with modular hole installation, strong component versatility, good applicability, and high standardization; 3. The upper part of the cabinet is the busbar compartment, the rear is the vertical busbar channel and cable entry and exit compartment, and the right side is designed as the secondary cable compartment, which has the function of separating primary and secondary systems, improving safety and maintenance convenience; 4. The length can be selected in a distributed manner according to the number of circuits in the cabinet and the amount of functional components used, and the size is adjustable.

[0030] To facilitate understanding by technical personnel, the following is a brief description of the preparation method of a pull-out low-voltage switchgear of this utility model, which includes the following steps: S1, assembling the frame of the cabinet body 1 using profiles and machining modular holes on the profiles; S2, fixing the guide rail mechanism 2 in the secondary cable compartment 12, fixing the terminal block 3 at the front end of the sliding member 22, and fixing the terminal side wire harness 4 to the guide member 21 and the sliding member 22 respectively; S3, installing the drawer unit 5 in the drawer compartment 11, arranging the vertical busbar channel in the cable inlet / outlet compartment 13, and arranging the busbar in the busbar compartment 14.

[0031] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications made by those skilled in the art based on the technical solution of the present utility model without departing from the design concept of the present utility model shall fall within the scope of protection defined by the claims of the present utility model.

Claims

1. A pull-out type low-voltage switchgear, comprising a cabinet (1), characterized in that, The cabinet (1) is divided into a drawer compartment (11), a secondary cable compartment (12), a cable entry / exit compartment (13), and a busbar compartment (14). The secondary cable compartment (12) is arranged side-by-side to the right of the drawer compartment (11). The cable entry / exit compartment (13) is located behind the drawer compartment (11) and the secondary cable compartment (12). The busbar compartment (14) is located above the drawer compartment (11), the secondary cable compartment (12), and the cable entry / exit compartment (13). A terminal block (3) that can slide back and forth is installed in the secondary cable compartment (12) via a guide rail mechanism (2). The track mechanism (2) includes guide members (21) fixed at intervals on the cabinet (1). The guide members (21) are provided with sliding members (22) that cooperate with them. The terminal block (3) is fixed at the front end of the sliding member (22). The terminal side wire harness (4) connected to the terminal block (3) is fixed on the guide member (21) and the sliding member (22) through two fixed points. The terminal side wire harness (4) between the two fixed points forms a U-shape. The length of the terminal side wire harness (4) between the two fixed points is greater than or equal to the maximum sliding distance of the sliding member (22) relative to the guide member (21).

2. The pull-out type low-voltage switchgear according to claim 1, characterized in that, The guide (21) is provided with a C-shaped groove, and the sliding member (22) is fitted into the groove of the guide (21).

3. A pull-out type low-voltage switchgear according to claim 2, characterized in that, The guide member (21) has an anti-detachment block (211) at its front end and a bolt hole (221) at its rear end. The bolt hole (221) is used to fix the anti-detachment limiting member that cooperates with the anti-detachment block (211) by bolts.

4. A pull-out type low-voltage switchgear according to claim 3, characterized in that, The secondary cable compartment (12) is hinged to the front of an openable door panel (121), and a partition plate (122) is fixed to the rear of the secondary cable compartment (12). The partition plate (122) has through holes (123) spaced apart.

5. A pull-out type low-voltage switchgear according to claim 4, characterized in that, There are three guide members (21). The secondary cable compartment (12) of the cabinet (1) is provided with a support rod (124) corresponding to the guide member (21) on the right side. Each guide member (21) is horizontally fixed on the corresponding support rod (124).

6. A pull-out type low-voltage switchgear according to claim 5, characterized in that, The drawer compartment (11) is equipped with a plurality of drawer units (5), each drawer unit (5) including a drawer (51), an operating mechanism (52) is installed in the drawer (51), and the operating mechanism (52) is connected to a plug-in contact (53) fixed to the rear side of the drawer (51).

7. A pull-out type low-voltage switchgear according to claim 6, characterized in that, The cabinet (1) includes a frame, which is assembled from profiles, and the profiles are provided with modular holes.

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