Steel frame of a switch cabinet

A technology of steel frame and switchgear, which is applied to the frame of substation/switchgear, details of substation/switch layout, electrical components, etc. Good stability, strong torsion resistance, and the effect of enhancing strength

Active Publication Date: 2019-04-16
WECOME GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of domestic power distribution technology, a considerable part of the low-voltage power distribution cabinets are equipped with withdrawable frame circuit breakers with larger and larger currents, and most of the power distribution cabinets on the market currently use cabinets assembled with ordinary C-shaped openings. Frame, due to the simple structure of steel profiles, the frame has poor rigidity and strength after combination, and the load capacity after forming the cabinet is limited, especially when used on complete sets of equipment for large-current frame circuit breakers, due to its poor dynamic stability, The strength of the cabinet is not enough to meet the requirements of high-strength dynamic stability

Method used

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  • Steel frame of a switch cabinet
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  • Steel frame of a switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, with reference to the attached Figure 1-5 , 7-8.

[0036] The steel frame of the switch cabinet of the present invention includes a column, a side beam 4, a small column 2 and a large beam 3. The column is fixedly connected to the side beam 4 and the large beam 3 respectively. Parallel to each other, the large beams 3 are parallel to each other, the side beams 4 and the large beams 3 are perpendicular to each other, and the small columns 3 are fixedly connected to the upper side beams 4; The steel frame also includes Corner fastening device, the structure of the corner fastening device as enlarged figure 2 The I site and magnification image 3 As shown in part II, the corner fastening device fixes the column 1, the side beam 4 and the large beam 3 together through fasteners 5 (such as fastening bolts), and the column adopts a rectangular closed profile 1. The sealing part of the profile 1 is provided with a confronting reinforcing rib device 12 .

[003...

Embodiment 2

[0042] Example 2, with reference to the attached Figure 1-3 , 6-9, 15-16.

[0043] In this embodiment, the corner fastening device includes a corner connecting block 6 and a pressing plate 7 , the corner connecting block 6 is pre-assembled and fixed on the end of the closed profile 1 , and the corner connecting block 6 is formed by a connecting plate 61 and the support column 62 are assembled and connected, the connecting plate 61 is provided with a positioning hole 612 for fixing the support column 63, the end surface of the support column 63 is provided with a positioning step 623, and the positioning hole 612 and The positioning step 623 cooperates to connect the connecting plate 61 and the support column 62 into a whole, and the support column 61 is provided with a second fastening hole 622 matched with the column 1; The cross-section of the beam 3 is adapted.

[0044] Two sides of the connecting plate 61 are provided with reinforced bending edges 611 , and a plurality ...

Embodiment 3

[0047] Example 3, with reference to the attached Figure 1-4 , 10-11.

[0048] In this embodiment, the confronting reinforcing rib device 12-1 means that the sealing portion of the closed profile can be fixedly connected by flat welding or other fastening methods. Correspondingly, the corner support column 62 does not need to be Set aside slot 621.

[0049] Other implementations of this embodiment are the same as those of Embodiment 1.

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Abstract

The invention provides a steel framework of a switch cabinet. The steel framework includes stand columns, side cross beams, small stand columns and large cross beams, the stand columns are fixedly connected with the side cross beams and the large cross beams, the side cross beams are mutually parallel, the large cross beams are mutually parallel, the side cross beams and the large cross beams are mutually perpendicular in direction, and the small stand columns are fixedly connected to the side cross beams located at the upper part; and the steel framework also includes corner fastening devices, the corner fastening devices fixedly connect the stand columns, the side cross beams and the large cross beams through fasteners, the stand columns are made of rectangular closed sectional materials, and sealing parts of the closed sectional materials are provided with collision reinforcing rib devices. According to steel framework of the switch cabinet, the closed rectangular steel sectional materials are obtained by rolling through a plurality of processes, the mechanical stability is good, the torsion resistance is high, and the steel framework can bear strong impact force generated by a 80KA short circuit current alone.

Description

technical field [0001] The invention relates to a high-strength steel frame of medium and low voltage cabinets, and belongs to the field of medium and low voltage switch cabinet manufacturing. Background technique [0002] With the development of domestic power distribution technology, a considerable number of low-voltage power distribution cabinets are equipped with draw-out frame circuit breakers with increasing current, and most power distribution cabinets on the market currently use ordinary open C-section cabinets. Due to the simple structure of steel profiles, the cabinet frame has poor rigidity and strength after combination, and the load capacity after forming the cabinet is limited, especially when used in the complete set of high-current frame circuit breakers, due to its poor dynamic stability. The strength of the cabinet is also not enough to meet the requirements of high-strength dynamic stability. SUMMARY OF THE INVENTION [0003] The technical problem to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B1/01
CPCH02B1/013H02B1/014
Inventor 蔡恒才马修福王陈伟李恩霖王家春
Owner WECOME GRP
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