Low-voltage cabinet frame

By designing the support method of forming a triangular structure of side beams, vertical beams and cross beams in the low-pressure cabinet frame, the problem of insufficient strength of the existing low-pressure cabinet frame structure is solved, and the impact resistance and overall quality are significantly improved.

CN222620394UActive Publication Date: 2025-03-14NANJING DAQO ELECTRIC CO LTD +1
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Patent Information

Application Number
CN202421194980.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-29
Publication Date
2025-03-14
Estimated Expiration
2034-05-29

AI Technical Summary

Technical Problem

The structural strength of the existing low-voltage cabinet frame is poor and is easily affected by external force during the installation of sheet metal shells, installation and transportation of electrical parts, affecting the quality of the low-voltage cabinet.

Method used

A low-pressure cabinet frame including vertical beams, cross beams and side beams is designed. The side beams, vertical beams and cross beams form a triangular structure. The cross beams and vertical beams are supported through the side beams to improve the structural strength.

Benefits of technology

Through the support structure of the side beams, the impact resistance of the low-pressure cabinet frame is improved, deformation and damage are reduced, and the overall quality of the low-pressure cabinet is improved.

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Abstract

The utility model discloses a low-voltage cabinet frame, comprising a plurality of vertical beams which are respectively arranged along a first direction in an extending manner; the cross beams are fixedly connected between every two adjacent vertical beams; wherein one part of the cross beams extend in the second direction, the other part of the cross beams extend in the third direction, the second direction is perpendicular to the third direction, and the second direction and the third direction are both perpendicular to the first direction; one end of each side beam is connected to the vertical beam, and the other end of each side beam is connected to the cross beam; wherein the vertical beam and the cross beam which are connected to the same side beam are fixedly connected; the side beams are obliquely arranged relative to the vertical beams and the cross beams, so that the side beams, the vertical beams and the cross beams form a triangular structure. The low-voltage cabinet frame provided by the utility model has the beneficial effect that the cross beams and the vertical beams are supported through the side beams so as to improve the structural strength.
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Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage cabinets, in particular to a low-voltage cabinet frame. Background Art

[0002] Low voltage cabinets are suitable for power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and other industries for power transmission, distribution and power conversion. Low voltage cabinets generally include sheet metal shell, cabinet frame and cabinet door, among which the cabinet frame is the main force-bearing structure of the entire low voltage cabinet.

[0003] In the prior art, the cabinet frame is generally assembled from hollow rectangles and C-shaped steels as the skeleton, and has poor structural strength. During the installation of sheet metal shells, electrical components and transportation, it is easily deformed by external impact, which affects the quality of the low-voltage cabinet. Utility Model Content

[0004] The content of this utility model is used to introduce the concepts in a brief form, which will be described in detail in the following specific implementation. The content of this utility model is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present utility model provide a low-voltage cabinet frame, including:

[0006] A plurality of vertical beams are respectively extended along the first direction;

[0007] A plurality of horizontal beams, fixedly connected between two adjacent vertical beams;

[0008] Part of the cross beam is extended along the second direction, and another part of the cross beam is extended along the third direction. The second direction and the third direction are perpendicular to each other, and the second direction and the third direction are perpendicular to the first direction.

[0009] The low voltage cabinet frame also includes:

[0010] A number of side beams connected at one end to the vertical beam and at the other end to the horizontal beam;

[0011] Among them, the vertical beam and the cross beam connected to the same side beam are fixedly connected; the side beam is inclined relative to the vertical beam, and the side beam is inclined relative to the cross beam, so that the side beam, the vertical beam and the cross beam form a triangular structure.

[0012] Furthermore, one end of the side beam is rotatably connected to the vertical beam, and the other end of the side beam is detachably connected to the horizontal beam.

[0013] Furthermore, the low voltage cabinet frame also includes:

[0014] A first mounting frame fixedly connected to the vertical beam;

[0015] a second mounting bracket fixedly connected to the crossbeam;

[0016] One end of the side beam is rotatably connected to the first mounting frame, and the other end is detachably connected to the second mounting frame.

[0017] Furthermore, two side beams connected to two adjacent transverse beams at the head and tail and forming a triangular structure with the same vertical beam are both connected to the same first mounting frame.

[0018] Further, the first mounting frame includes:

[0019] A main body is arranged around and fixed to at least two side surfaces of the vertical beam;

[0020] A first folded edge portion, arranged perpendicular to the second direction;

[0021] The second folding edge portion is arranged perpendicular to the third direction;

[0022] Among them, among the two side beams connected to two adjacent horizontal beams at the head and tail and forming a triangular structure with the same vertical beam, one side beam is rotatably connected to the first folded edge portion, and the other side beam is rotatably connected to the second folded edge portion.

[0023] Furthermore, two side beams located between two adjacent vertical beams and forming a triangular structure with the same horizontal beam are both connected to the same second mounting frame.

[0024] Further, the second mounting frame includes:

[0025] Two mounting parts are arranged and fixed on the top surface, inner side surface and bottom surface of the crossbeam;

[0026] A binding portion, located between the two mounting portions;

[0027] Two side beams located between two adjacent vertical beams and forming a triangular structure with the same horizontal beam are both bound and connected to the binding portion.

[0028] Furthermore, there is a distance between the binding portion and the inner side surface, and the binding portion is also provided with a guide groove;

[0029] The low voltage cabinet frame also includes:

[0030] A guide rod is provided through the guide groove and the side beam;

[0031] a fastener threadedly connected to one end of the guide rod;

[0032] The guide rod is also provided with a boss, which is located between the binding portion and the inner side surface of the cross beam; when the fastener is rotated, the fastener and the boss approach each other to clamp the binding portion and the side beam.

[0033] Furthermore, the side beam is provided with a first limiting hole, and the binding portion is provided with a second limiting hole;

[0034] The low voltage cabinet frame also includes:

[0035] A limiter, disposed between the fastener and the side beam;

[0036] Wherein, the limiting member is provided with a limiting protrusion, and the limiting protrusion passes through the first limiting hole and is at least partially embedded in the second limiting hole.

[0037] Furthermore, the low voltage cabinet frame also includes:

[0038] An elastic gasket is arranged between the limiting member and the crossbeam;

[0039] Wherein, the elastic gasket is also sleeved on the guide rod.

[0040] The beneficial effect of the utility model is that it provides a low-voltage cabinet frame which supports the horizontal beams and the vertical beams through the side beams to improve the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The drawings and descriptions of the exemplary embodiments of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0042] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0043] In the attached picture:

[0044] Figure 1 It is an overall schematic diagram of a low-voltage cabinet frame according to an embodiment of the utility model;

[0045] Figure 2 yes Figure 1 A perspective view of a portion of a low voltage cabinet frame is shown;

[0046] Figure 3 yes Figure 1 A perspective view of another part of the low voltage cabinet frame shown;

[0047] Figure 4 yes Figure 1 A perspective view of another part of the low voltage cabinet frame shown;

[0048] Figure 5 yes Figure 1 A three-dimensional view of a first mounting frame in a low voltage cabinet frame shown;

[0049] Figure 6 yes Figure 1 A cross-sectional view of a portion of the structure in the low voltage cabinet frame shown;

[0050] Figure 7 yes Figure 1 An exploded view of a portion of the structure in the low voltage cabinet frame is shown;

[0051] Figure 8 yes Figure 1 A perspective view of the side beams in the low voltage cabinet frame shown;

[0052] Fig. 9 yes Figure 1 A perspective view of the guide rod in the low voltage cabinet frame shown;

[0053] Fig.10 yes Figure 1 A three-dimensional diagram of a stopper in a low-voltage cabinet frame is shown;

[0054] Fig.11 yes Figure 1 A perspective view of the second mounting bracket in the low voltage cabinet frame is shown.

[0055] Meaning of the reference symbols:

[0056] 100, low voltage cabinet frame; 111, vertical beam; 112, horizontal beam;

[0057] 113, side beam; 113a, anti-rotation hole; 113b, first limiting hole;

[0058] 120, first mounting frame; 121, main body; 122, first folding edge portion; 123, second folding edge portion;

[0059] 130, second mounting frame; 131, mounting portion; 132, binding portion; 132a, guide groove; 132b, second limiting hole;

[0060] 141, first latch; 142, second latch;

[0061] 150, guide rod; 151, boss; 152, anti-rotation part;

[0062] 160, fastener; 170, limiter; 171, limiter protrusion; 180, elastic gasket;

[0063] Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0064] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0065] It should also be noted that, for ease of description, only the parts related to the present invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0066] In the description of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second" and the like appear in the description of the present utility model, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0069] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Example

[0070] like Figures 1 to 3 As shown, the low voltage cabinet frame 100 of the present invention includes a vertical beam 111 , a horizontal beam 112 and a side beam 113 .

[0071] Specifically, a plurality of vertical beams 111 are provided, which are respectively extended along the first direction Z; a plurality of horizontal beams 112 are provided, which are fixedly connected between two adjacent vertical beams 111; a part of the horizontal beams 112 are extended along the second direction X, and another part of the horizontal beams 112 are extended along the third direction Y, the second direction X and the third direction Y are perpendicular to each other, and the second direction X and the third direction Y are both perpendicular to the first direction Z. The two vertical beams 111 and the two horizontal beams 112 are connected end to end to form a rectangular frame in the vertical direction (i.e., parallel to the first direction Z), and the internal space of the low-voltage cabinet frame 100 is enclosed by four rectangular frames. The vertical beams 111 and the horizontal beams 112 are both hollow rectangular beams, which can reduce the overall weight of the low-voltage cabinet frame 100, but will reduce the structural strength of the low-voltage cabinet frame 100.

[0072] In order to solve the above problems, the utility model is provided with a plurality of side beams 113, one end of the side beam 113 is connected to the vertical beam 111, and the other end is connected to the horizontal beam 112, and the vertical beam 111 and the horizontal beam 112 connected to the same side beam 113 are fixedly connected. The specific fixing method of the vertical beam 111 and the horizontal beam 112 can be fixed directly or through a connecting piece, which is not the focus of improvement in the utility model and will not be described in detail; the side beam 113 is inclined relative to the vertical beam 111, and the side beam 113 is inclined relative to the horizontal beam 112, so that the side beam 113, the vertical beam 111 and the horizontal beam 112 form a triangular structure.

[0073] By adopting the above scheme, by setting the side beam 113, cooperating with the vertical beam 111 and the horizontal beam 112 to form a triangular structure, the vertical beam 111 and the horizontal beam 112 can be effectively supported, thereby improving the structural strength of the low-voltage cabinet, making it less susceptible to deformation and damage due to external impact, thereby improving the quality of the low-voltage cabinet.

[0074] As a preferred solution, the side beam 113 is disposed inside the rectangular frame, thereby avoiding interference between the side beam 113 and the subsequent installation of the sheet metal housing.

[0075] It should be noted that the inner side of the rectangular frame in the present invention refers to a side surface close to the inner space enclosed by four rectangular frames.

[0076] As a preferred solution, one end of the side beam 113 is rotatably connected to the vertical beam 111 , and the other end of the side beam 113 is detachably connected to the cross beam 112 .

[0077] By adopting such an installation method, one end of the side beam 113 can be installed to the vertical beam 111 before the vertical beam 111 and the horizontal beam 112 are assembled, and the other end of the side beam 113 can be connected to the horizontal beam 112 after the vertical beam 111 and the horizontal beam 112 are assembled, thereby reducing the difficulty of installing the side beam 113.

[0078] like Figures 2 to 4As shown, as a specific solution, the low voltage cabinet frame 100 further includes a first mounting frame 120 and a second mounting frame 130 .

[0079] Specifically, the first mounting frame 120 is fixedly connected to the vertical beam 111 , and the second mounting frame 130 is fixedly connected to the horizontal beam 112 ; one end of the side beam 113 is rotatably connected to the first mounting frame 120 , and the other end is detachably connected to the second mounting frame 130 .

[0080] By adopting the above scheme, by setting up the first mounting frame 120 and the second mounting frame 130, when the low-voltage cabinet frame 100 is impacted by external force, the force of the side beam 113 can be evenly applied to the vertical beam 111 or the horizontal beam 112 through the first mounting frame 120 and the second mounting frame 130, thereby avoiding deformation at the connection of the side beam 113.

[0081] like Figure 3 As shown, further preferably, the vertical beam 111 is provided with a first reserved hole (not shown), and the first mounting frame 120 is limited in position on the vertical beam 111 by the cooperation of the first latch 141 with the first reserved hole.

[0082] The cross beam 112 is provided with a second reserved hole (not shown), and the first mounting bracket 120 limits the position of the second mounting bracket 130 on the cross beam 112 by the cooperation between the second pin 142 and the second reserved hole.

[0083] like Figures 1 to 3 As shown, in some embodiments, two side beams 113 connected to two adjacent transverse beams 112 and forming a triangular structure with the same vertical beam 111 are both connected to the same first mounting frame 120. With such a solution, not only the number of first mounting frames 120 can be reduced, but also the impact on the vertical beam 111 can be dispersed to the two side beams 113 connected thereto, thereby improving the impact resistance.

[0084] like Figures 3 to 5 As shown, as a specific solution, the first mounting frame 120 includes a main body 121 , a first folded edge portion 122 and a second folded edge portion 123 .

[0085] Specifically, the main body 121 is fixed around at least two side surfaces of the vertical beam 111, preferably two side surfaces close to the internal space. The first folding portion 122 is arranged perpendicular to the second direction X; the second folding portion 123 is arranged perpendicular to the third direction Y; of the two side beams 113 connected to the two adjacent horizontal beams 112 and forming a triangular structure with the same vertical beam 111, one of the side beams 113 is rotatably connected to the first folding portion 122, and the other side beam 113 is rotatably connected to the second folding portion 123.

[0086] By adopting the above scheme, by setting the first folding part 122 and the second folding part 123 perpendicular to each other, the external force along the second direction X received by the vertical beam 111 can be transmitted along the second folding part 123, and the external force along the third direction Y received by the vertical beam 111 can be transmitted along the first folding part 122, thereby improving the effect of resisting external force impact. At the same time, the cooperation between the folding parts in two directions and the vertical beam 111 makes the first mounting frame 120 abut against the vertical beam 111, and then the first latch 141 and the vertical beam 111 do not need to be screwed and fixed, and the first mounting frame 120 can be fixed by only using the first latch 141 and the shaft hole of the first reserved hole, so that the first mounting frame 120 can be disassembled according to the needs later.

[0087] like Figures 2 to 4 As shown, in some embodiments, two side beams 113 located between two adjacent vertical beams 111 and forming a triangular structure with the same cross beam 112 are connected to the same second mounting frame 130. With such a solution, not only the number of second mounting frames 130 can be reduced, but also the force exerted by one side beam 113 on the second mounting frame 130 can be dispersed to the cross beam 112 and the other side beam 113 connected to the second mounting frame 130, thereby improving the impact resistance.

[0088] like Figure 3 , Figure 4 , Figures 6 to 11 As shown, as a specific solution, the second mounting frame 130 includes a mounting portion 131 and a binding portion 132 .

[0089] Specifically, two mounting portions 131 are provided, which are respectively arranged around the top surface, the inner side surface and the bottom surface fixed to the cross beam 112, wherein the top surface and the bottom surface are two opposite surfaces of the cross beam 112 in the first direction Z, the second reserved hole is located on the top surface, and the inner side surface is a side surface close to the internal space. The binding portion 132 is located between the two mounting portions 131, and the two side beams 113 located between two adjacent vertical beams 111 and forming a triangular structure with the same cross beam 112 are both bound and connected to the binding portion 132.

[0090] By adopting the above scheme, when the horizontal beam 112 is arranged parallel to the third direction Y, the movement freedom of the second mounting frame 130 in the first direction Z and the second direction X can be limited by the shape cooperation between the mounting portion 131 and the vertical beam 111, and the movement freedom of the second mounting frame 130 in the third direction Y can be limited by the cooperation between the second pin 142 and the second reserved hole.

[0091] When the horizontal beam 112 is arranged parallel to the second direction X, the movement freedom of the second mounting frame 130 in the first direction Z and the third direction Y can be limited by the shape cooperation between the mounting portion 131 and the vertical beam 111, and the movement freedom of the second mounting frame 130 in the second direction X can be limited by the cooperation between the second pin 142 and the second reserved hole.

[0092] Thus, through the above arrangement, the second mounting frame 130 is completely fixed, and thus the second pin 142 and the beam 112 do not need to be screwed together. The second mounting frame 130 can be fixed only by cooperating with the second pin 142 and the axial hole of the second reserved hole, which facilitates the subsequent disassembly of the second mounting frame 130 as needed.

[0093] As a more specific solution, there is a gap between the binding portion 132 and the inner side surface, and the binding portion 132 is further provided with a guide groove 132a, which is open at the bottom surface of the binding portion 132. The low voltage cabinet frame 100 further includes a guide rod 150 and a fastener 160.

[0094] Specifically, the guide rod 150 is inserted through the side beam 113 and the guide groove 132a, and can slide along the guide groove 132a. A boss 151 is also provided at one end of the guide rod 150, and the boss 151 is located between the binding portion 132 and the inner side surface of the cross beam 112. The fastener 160 is threadedly connected to the other end of the guide rod 150. When the fastener 160 is rotated, the fastener 160 and the boss 151 approach each other to clamp the binding portion 132 and the side beam 113.

[0095] By adopting the above solution, the side beam 113 and the second mounting frame 130 are quickly fixed to each other through the cooperation between the guide rod 150 and the guide groove 132a, and the threaded cooperation between the fastener 160 and the guide rod 150, so as to facilitate assembly.

[0096] More specifically, the surface of the guide rod 150 is provided with a rotation stopper 152, and the side beam 113 is penetrated with a rotation stopper hole 113a that matches the rotation stopper 152. The cross-sectional shape of the rotation stopper 152 can be cam-shaped, polygonal, spline-shaped, etc.

[0097] Due to the setting of the guide groove 132a, when impacted by external force, the guide rod 150 may retreat along the guide groove 132a. As a preferred solution, the side beam 113 is provided with a first limiting hole 113b, and the binding portion 132 is provided with a second limiting hole 132b. When the guide rod 150 moves into position along the guide groove 132a, the first limiting hole 113b and the second limiting hole 132b are completely aligned.

[0098] The low voltage cabinet frame 100 further includes a limiter 170. The limiter 170 is disposed between the fastener 160 and the side beam 113, and the limiter 170 is sleeved on the guide rod 150; a limiter protrusion 171 is disposed on a side of the limiter 170 close to the fastener 160, and the limiter protrusion 171 passes through the first limiter hole 113b and is at least partially embedded in the second limiter hole 132b. The number of limiter protrusions 171 can be selected according to actual needs.

[0099] By adopting the above scheme, when the guide rod 150 moves into position along the guide groove 132a and then rotates the fastener 160 to clamp the binding part 132 and the side beam 113, the limiting protrusion 171 passes through the first limiting hole 113b and is at least partially embedded in the second limiting hole 132b, thereby limiting the movement of the side beam 113 relative to the second mounting frame 130 and preventing the guide rod 150 from retreating along the guide groove 132a.

[0100] Furthermore, the low-voltage cabinet frame 100 also includes an elastic gasket 180, which is arranged between the limit piece 170 and the cross beam 112, and the elastic gasket 180 is also sleeved on the guide rod 150. When the fastener 160 is loosened in reverse, under the action of the elastic gasket 180, the limit protrusion 171 can automatically pop out of the second limit hole 132b, thereby facilitating the separation of the side beam 113 and the second mounting frame 130.

[0101] Preferably, the elastic gasket 180 may be a corrugated gasket.

[0102] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above utility model concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A low voltage cabinet frame, comprising: A plurality of vertical beams are respectively extended along the first direction; A plurality of horizontal beams, fixedly connected between two adjacent vertical beams; Part of the cross beams are extended along the second direction, and another part of the cross beams are extended along the third direction, the second direction and the third direction are perpendicular to each other, and the second direction and the third direction are perpendicular to the first direction; Features: The low voltage cabinet frame also includes: a plurality of side beams, one end of which is connected to the vertical beam and the other end of which is connected to the horizontal beam; Among them, the vertical beam and the cross beam connected to the same side beam are fixedly connected; the side beam is inclined relative to the vertical beam, and the side beam is inclined relative to the cross beam, so that the side beam, the vertical beam and the cross beam form a triangular structure.

2. The low voltage cabinet frame according to claim 1, characterized in that: One end of the side beam is rotatably connected to the vertical beam, and the other end of the side beam is detachably connected to the cross beam.

3. The low voltage cabinet frame according to claim 1, characterized in that: The low voltage cabinet frame also includes: a first mounting frame fixedly connected to the vertical beam; a second mounting bracket fixedly connected to the crossbeam; One end of the side beam is rotatably connected to the first mounting frame, and the other end is detachably connected to the second mounting frame.

4. The low voltage cabinet frame according to claim 3, characterized in that: The two side beams connected to the two adjacent transverse beams and forming a triangular structure with the same vertical beam are both connected to the same first mounting frame.

5. The low voltage cabinet frame according to claim 4, characterized in that: The first mounting frame comprises: A main body, which is arranged around and fixed to at least two side surfaces of the vertical beam; A first folded edge portion, arranged perpendicular to the second direction; A second folded edge portion, arranged perpendicular to the third direction; Among them, among the two side beams connected to the two adjacent horizontal beams at the head and tail and forming a triangular structure with the same vertical beam, one of the side beams is rotatably connected to the first folded edge portion, and the other side beam is rotatably connected to the second folded edge portion.

6. The low voltage cabinet frame according to claim 3, characterized in that: The two side beams located between two adjacent vertical beams and forming a triangular structure with the same horizontal beam are both connected to the same second mounting frame.

7. The low voltage cabinet frame according to claim 6, characterized in that: The second mounting frame comprises: Two mounting parts are arranged and fixed around the top surface, the inner side surface and the bottom surface of the crossbeam; A binding portion, located between the two mounting portions; Two side beams located between two adjacent vertical beams and forming a triangular structure with the same horizontal beam are both bound and connected to the binding portion.

8. The low voltage cabinet frame according to claim 7, characterized in that: There is a distance between the binding portion and the inner side surface, and the binding portion is also provided with a guide groove; The low voltage cabinet frame also includes: A guide rod, passing through the guide groove and the side beam; a fastener threadedly connected to one end of the guide rod; Wherein, the guide rod is also provided with a boss, and the boss is located between the binding portion and the inner side surface of the cross beam; when the fastener is rotated, the fastener and the boss approach each other to clamp the binding portion and the side beam.

9. The low voltage cabinet frame according to claim 8, characterized in that: The side beam is provided with a first limiting hole, and the binding portion is provided with a second limiting hole; The low voltage cabinet frame also includes: A limiting member, disposed between the fastener and the side beam; Wherein, the limiting member is provided with a limiting protrusion, and the limiting protrusion passes through the first limiting hole and is at least partially embedded in the second limiting hole.

10. The low voltage cabinet frame according to claim 9, characterized in that: The low voltage cabinet frame also includes: An elastic gasket, arranged between the limiting member and the crossbeam; Wherein, the elastic gasket is also sleeved on the guide rod.