Frame beam column connecting structure and switch cabinet using connecting structure

Abstract

The invention relates to the field of cabinet type shells, in particular to a beam column connecting structure of a frame and a switch cabinet using the connecting structure. According to the switch cabinet, a frame of the switch cabinet adopts a beam-column connecting structure of the frame and comprises a stand column and a cross beam, the cross beam comprises a first connecting edge connected with the stand column, and the stand column comprises a second connecting edge connected with the cross beam; a first bolt penetrating hole is formed in the first connecting edge, and a second bolt penetrating hole matched with the first bolt penetrating hole is formed in the position, making contact with the first connecting edge, of the second connecting edge. A connecting nut matched with a bolt to realize fixed connection between the upright post and the cross beam is arranged on one side, back to the cross beam, of the second connecting edge or one side, back to the upright post, of the first connecting edge; pin penetrating holes penetrating through the first connecting edge and the second connecting edge are formed in the sides of the first bolt penetrating hole and the second bolt penetrating hole. The problems that due to the fact that a connecting structure in an existing switch cabinet frame is too complex, the assembly difficulty of the switch cabinet frame is large, and the assembly time is long are solved.

Description

Technical Field

[0001] The invention relates to the field of cabinet-type housings, and in particular to a beam-column connection structure of a frame and a switch cabinet using the connection structure. Background Art

[0002] In the prior art, the frames of medium and high voltage switchgear are mostly welded structures, which are usually welded by angle steel, channel steel and other profiles. Although the welded frame has a stable structure, it is inconvenient to weld and has a large workload due to its large size. In addition, when performing subsequent surface treatment and spraying, it cannot enter the ordinary spraying line due to size limitations, and can only be sprayed and cured in a separate spraying room, which seriously affects production efficiency. In addition, the cost of separate spraying is high, and the overall storage, transportation and assembly of the welded frame occupy a large space, which is not conducive to batch assembly line production.

[0003] The patent with authorization announcement number CN204391500U discloses a frame of a low-voltage switch cabinet, including four columns, the upper and lower ends of which are connected and fixed by a pair of cross beams and a pair of longitudinal beams: the first cross beam portion, the second cross beam portion, the second cross beam portion, the fourth cross beam portion, the fifth cross beam portion, the first connecting end portion and the second connecting end portion of the cross beam are bent and enclosed to form a semi-closed polygonal frame structure, and the first connecting end portion overlaps with the second connecting end portion: the connecting bolts pass through the second connecting end portion and the first connecting end portion of the cross beam end in sequence, and the longitudinal beam and are then threadedly connected to the first connecting pressure plate located in the longitudinal beam; the connecting bolts pass through the second connecting end portion and the first connecting end portion of the cross beam end in sequence, and the column and are then bolted to the second connecting pressure plate located in the column.

[0004] The frame of the low-voltage switchgear of this patent is firmly connected and easy to install. However, during the production of this patent, it is necessary to first enclose the beam into a semi-enclosed structure and set a connecting plate inside the column. During assembly, it is necessary to fix it with a large number of bolts, which does not reduce much of the workload, and does not simplify the workflow and reduce the process. And if this patent is applied to medium and high voltage switchgear, due to the larger size of the cabinet frame of the medium and high voltage switchgear, there are higher requirements for the tightness of the connection structure, so it is even necessary to add more fastening structures, such as adding bolts, etc., so the process will be more complicated and more difficult to assemble. Summary of the invention

[0005] The object of the present invention is to provide a beam-column connection structure of a frame, so as to solve the problem that the connection structure in the prior art is too complicated, resulting in difficulty in installing the frame and a long installation time. The present invention also provides a switch cabinet, so as to solve the problem that the connection structure in the existing switch cabinet frame is too complicated, resulting in difficulty in assembling the switch cabinet frame and a long assembly time.

[0006] A beam-column connection structure of a frame includes a column and a crossbeam, the crossbeam includes a first connection edge connected to the column, and the column includes a second connection edge connected to the crossbeam; a first bolt through-hole is provided on the first connection edge, a second bolt through-hole matching the first bolt through-hole is provided at a position where the second connection edge contacts the first connection edge, a connecting nut that cooperates with the bolt to achieve a fixed connection between the column and the crossbeam is provided on the side of the second connection edge facing away from the crossbeam or on the side of the first connection edge facing away from the column; a pin hole that passes through the first connection edge and the second connection edge is provided next to the first bolt through-hole and the second bolt through-hole.

[0007] The present invention improves the prior art. Specifically, through the cooperation of bolts and pins, the crossbeam and the column are fastened together, which simplifies the installation process, reduces the installation difficulty, greatly shortens the installation time, and solves the problem in the prior art that the connection structure is too complicated, resulting in difficulty in installing the frame and a long installation time.

[0008] Furthermore, the number of the pin-penetrating holes is not less than two.

[0009] The advantage is that the number of the pin holes is more than two, that is, the number of the pins is more than two, which can ensure the connection effect and the anti-rotation effect.

[0010] Furthermore, the pin holes are arranged asymmetrically with the bolt through hole as the center.

[0011] The advantages are that the asymmetrically arranged pin holes can provide a certain adjustment margin for the subsequent pin assembly, and because the pin holes are asymmetrically arranged, the fastening effect of the pin is better.

[0012] Furthermore, the crossbeam is an L-shaped crossbeam, and the first connecting edge is a double-layer folded edge formed by bending and overlapping two side edges of the L-shaped crossbeam.

[0013] The advantage is that making the connecting edge into a double-layer folded edge extending from both sides of the beam and bending and overlapping can strengthen the fastening effect of the column and the beam and avoid the situation of disengagement.

[0014] Furthermore, the bolt through holes and the pin through holes on the side of the double-layer folding edge away from the column are through holes that are slightly larger than the bolt through holes and the pin through holes on the other side of the folding edge.

[0015] The advantage is that setting the bolt through hole and the pin through hole on the side of the fold away from the column to be slightly larger than the bolt through hole and the pin through hole on the other side of the fold can make the connecting bolts and pins more convenient and easier to install.

[0016] Furthermore, the connecting nut is fixed on the corresponding connecting edge.

[0017] The advantage is that the connecting nut is fixed on the corresponding connecting edge so that the bolt and the nut can be fastened together more conveniently.

[0018] Furthermore, the column is a U-shaped column, the wall surface of the column facing the end of the beam is the second connecting edge, and the connecting nut is a rivet nut fixed on the second connecting edge by riveting.

[0019] The advantage is that since the column is a U-shaped column, the connecting bolt cannot be inserted from this side, so the connecting nut is set on the second connecting edge. The connecting nut is fixed to the second connecting edge by riveting, which saves time and improves manufacturing efficiency.

[0020] Furthermore, the pin inserted into the pin hole is an elastic cylindrical pin.

[0021] The advantages are: the connection is carried out through the elastic cylindrical pin. Due to the tensioning effect of the elastic cylindrical pin itself, the connection effect of the elastic cylindrical pin is good, and the falling off caused by looseness can be prevented.

[0022] A switch cabinet, the switch cabinet frame adopts a frame beam-column connection structure, including a column and a beam, the beam including a first connection edge connected to the column, and the column including a second connection edge connected to the beam; a first bolt through hole is provided on the first connection edge, and a second bolt through hole matching the first bolt through hole is provided at a position where the second connection edge contacts the first connection edge, and a connecting nut that cooperates with the bolt to achieve a fixed connection between the column and the beam is provided on the side of the second connection edge facing away from the beam or the side of the first connection edge facing away from the column; a pin hole that passes through the first connection edge and the second connection edge is provided next to the first bolt through hole and the second bolt through hole.

[0023] The present invention improves the prior art. Specifically, the switch cabinet frame adopts the method of combining bolts and pins to fix the switch cabinet frame columns and beams, which simplifies the installation process, reduces the installation difficulty, and greatly shortens the installation time. It solves the problem that the connection structure in the existing switch cabinet frame is too complicated, resulting in difficulty in assembling the switch cabinet frame and a long assembly time.

[0024] Furthermore, the number of the pin-penetrating holes is not less than two.

[0025] The advantage is that the number of the pin holes is more than two, that is, the number of the pins is more than two, which can ensure the connection effect and the anti-rotation effect.

[0026] Furthermore, the pin holes are arranged asymmetrically with the bolt through hole as the center.

[0027] The advantages are that the asymmetrically arranged pin holes can provide a certain adjustment margin for the subsequent pin assembly, and because the pin holes are asymmetrically arranged, the fastening effect of the pin is better.

[0028] Furthermore, the crossbeam is an L-shaped crossbeam, and the first connecting edge is a double-layer connecting edge formed by bending and overlapping two sides of the L-shaped crossbeam.

[0029] The advantage is that making the connecting edge into a double-layer folded edge extending from both sides of the beam and bending and overlapping can strengthen the fastening effect of the column and the beam and avoid the situation of disengagement.

[0030] Furthermore, the bolt through holes and the pin through holes on the side of the double-layer folding edge away from the column are through holes that are slightly larger than the bolt through holes and the pin through holes on the other side of the folding edge.

[0031] The advantage is that the bolt through holes and the pin through holes on the folded edge on the side away from the column are set to be slightly larger than the bolt through holes and the pin through holes on the folded edge on the other side, which can make the bolts and pins more convenient and easier to install.

[0032] Furthermore, the connecting nut is fixed on the second connecting edge.

[0033] The advantage is that the connecting nut is fixed on the second connecting edge, so that the bolt and the nut can be fastened together more conveniently.

[0034] Furthermore, the column is a U-shaped column, the wall surface of the column facing the end of the beam is the second connecting edge, and the connecting nut is a rivet nut fixed on the second connecting edge by riveting.

[0035] The advantage is that since the column is a U-shaped column, the connecting bolt cannot be inserted from this side, so the connecting nut is set on the second connecting edge. The connecting nut is fixed to the second connecting edge by riveting, which saves time and improves manufacturing efficiency.

[0036] Furthermore, the pin inserted into the pin hole is an elastic cylindrical pin.

[0037] The advantages are: the connection is carried out through the elastic cylindrical pin. Due to the tensioning effect of the elastic cylindrical pin itself, the connection effect of the elastic cylindrical pin is good, and the falling off caused by looseness can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 : a schematic diagram of a connection structure between a beam and a column of a frame of a switch cabinet according to an embodiment of the present invention;

[0039] Figure 2 for: Figure 1 The enlarged schematic diagram of point Ⅰ in the middle;

[0040] Figure 3 The figure is a side view of a connection structure between a beam and a column of a frame of a switch cabinet according to an embodiment of the present invention;

[0041] Figure 4 for: Figure 3 An enlarged view of point II in FIG.

[0042] In the figure: 1, column; 2, beam; 3, connecting bolt; 4, flat washer; 5, elastic cylindrical pin; 6, rivet nut; 7, second connecting edge; 8, first connecting edge. DETAILED DESCRIPTION

[0043] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0044] Embodiment 1 of the switch cabinet of the present invention:

[0045] like Figure 1-4 As shown, the switch cabinet frame of the present invention achieves the purpose of fastening the crossbeam 2 to the column 1 through the cooperation of the connecting bolts 3 and the elastic cylindrical pins 5, and replaces the close bolt connection method in the prior art through the cooperation of the elastic cylindrical pins 5 and the connecting bolts 3. Compared with the dense bolt connection method, the method of using the elastic cylindrical pins 5 and the connecting bolts 3 to cooperate is simple in the connection process, the connection difficulty is reduced, and the assembly time is greatly shortened, which solves the problem that the connection structure in the existing switch cabinet frame is too complicated, resulting in the difficulty of assembling the switch cabinet frame and the long assembly time.

[0046] like Figure 1-4 As shown, the crossbeam 2 is an L-shaped crossbeam, and the two sides of the crossbeam 2 are extended and bent to form a double-layer folded edge, which together constitutes a first connecting edge 8. The first connecting edge 8 is made into a double-layer structure extending from the two sides of the crossbeam 2 and bending to overlap, which can strengthen the fastening effect of the column 1 and the crossbeam 2 and avoid the occurrence of disengagement. A first bolt through hole is provided on the first connecting edge 8. The column 1 is a U-shaped column, and the wall surface of the column 1 facing the end of the crossbeam is the second connecting edge 7. The second bolt through hole matching the first bolt through hole is provided at the position where the second connecting edge 7 and the first connecting edge 8 are in contact with each other, and six pin holes are provided beside the first bolt through hole and the second bolt through hole. The pin holes are arranged around the bolt through hole with the bolt through hole as the center, and the pin holes are asymmetrically arranged around the bolt through hole. The asymmetrically arranged pin holes can provide a certain adjustment margin for the subsequent assembly of the pin. And due to the asymmetrical arrangement of the pin holes, the fastening effect of the pin is even better. Of course, in other embodiments, the number of the pin holes may be four, five, seven, eight, or more or less, and can be selected according to actual conditions.

[0047] The first connecting edge 8 on the crossbeam 2 is a double-layer folded edge, and the bolt through hole and the pin through hole on the folded edge on the side away from the column 1 in the double-layer folded edge are through holes slightly larger than the bolt through hole and the pin through hole on the folded edge on the other side. Setting the connecting hole on the folded edge on the side away from the column 1 as a through hole slightly larger than the connecting hole on the folded edge on the other side can make the connecting bolt 3 and the pin more convenient and easier to install.

[0048] A connecting nut matched with the connecting bolt 3 is provided on the side of the first connecting edge 8 of the column 1 away from the cross beam 2. The connecting nut is fixed to the second connecting edge 7 by means of pressure riveting. The connecting nut is fixed to the second connecting edge 7 by means of pressure riveting, which saves time and improves manufacturing efficiency compared to other fixing methods.

[0049] When connecting, first place the first connecting edge 8 of the cross beam 2 and the second connecting edge 7 on the column 1 together, then align the first bolt through hole with the second bolt through hole, and then align the pin hole, insert the connecting bolt 3 from the first bolt through hole, and the connecting bolt 3 passes through the flat washer 4, the first bolt through hole and the second bolt through hole in sequence, and contacts the rivet nut 6, and then the connecting bolt 3 and the rivet nut 6 are tightened. Then the elastic cylindrical pin 5 is inserted into the pin hole to complete the fixation. The reason for using the elastic cylindrical pin 5 is that the elastic cylindrical pin 5 has a good connection effect and can prevent falling off due to loosening.

[0050] Embodiment 2 of the switch cabinet of the present invention: This embodiment differs from Embodiment 1 in that the nut is fixed to the second connecting edge by welding.

[0051] Embodiment 3 of the switch cabinet of the present invention: The difference between this embodiment and embodiment 1 is that: in this embodiment, the connecting nut is independent of the second connecting edge.

[0052] Embodiment 4 of the switch cabinet of the present invention: The difference between this embodiment and the embodiment 1 is that in this embodiment, the connecting nut is fixed to the first connecting edge by means of pressure riveting.

[0053] Embodiment 5 of the switch cabinet of the present invention: The difference between this embodiment and embodiment 1 is that the pin holes are symmetrically arranged around the bolt holes.

[0054] Embodiment 6 of the switch cabinet of the present invention: The difference between this embodiment and embodiment 1 lies in that: the crossbeam is a straight plate-shaped crossbeam, both sides of which are bent to form a first connecting edge, and a first bolt through hole is provided on the first connecting edge; the column is an L-shaped column, and the side in contact with the first connecting edge of the crossbeam is the second connecting edge, and a second bolt through hole is provided on the second connecting edge; pin holes penetrating the first connecting edge and the second connecting edge are provided around the first bolt through hole and the second bolt through hole.

[0055] Embodiment 7 of the switch cabinet of the present invention: The difference between this embodiment and the embodiment 1 is that: in this embodiment, a conical pin is installed in the through-pin hole, and the first connecting edge and the second connecting edge are wedged together by the conical pin.

[0056] When the upright columns and the cross beams of the switch cabinet frame are connected, the above connection structure may be used for both, or of course, the above connection structure may be used for part and other connection structures may be used for part.

[0057] An embodiment of the beam-column connection structure of the frame of the present invention: Its specific structure is the same as the beam-column connection structure of the frame in the switch cabinet introduced above, and will not be described in detail herein.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A frame beam-column connection structure, comprising a column (1) and a beam (2), characterized in that: The cross beam (2) includes a first connecting edge (8) connected to the column (1), and the column (1) includes a second connecting edge (7) connected to the cross beam (2); a first bolt through hole is provided on the first connecting edge (8), a second bolt through hole matching the first bolt through hole is provided at a position where the second connecting edge (7) contacts the first connecting edge (8), and a connecting nut is provided on the side of the second connecting edge (7) facing away from the cross beam (2) or the side of the first connecting edge (8) facing away from the column (1) to cooperate with the connecting bolt (3) to achieve fixed connection between the column (1) and the cross beam (2); and pin holes penetrating the first connecting edge (8) and the second connecting edge (7) are provided beside the first bolt through hole and the second bolt through hole.

2. The beam-column connection structure of the frame according to claim 1, characterized in that: The number of the pin-through holes is not less than two.

3. The beam-column connection structure of the frame according to claim 2, characterized in that: The pin holes are arranged asymmetrically with the bolt through hole as the center.

4. The beam-column connection structure of the frame according to any one of claims 1 to 3, characterized in that: The crossbeam (2) is an L-shaped crossbeam (2), and the first connecting edge (8) is a double-layer folded edge formed by bending and overlapping two side edges of the L-shaped crossbeam (2).

5. The beam-column connection structure of the frame according to claim 4, characterized in that: The bolt through holes and the pin through holes on the connection edge on one side of the double-layer connection edge away from the column (1) are through holes slightly larger than the bolt through holes and the pin through holes on the connection edge on the other side.

6. The beam-column connection structure of the frame according to any one of claims 1 to 3, characterized in that: The connecting nut is fixed on the corresponding connecting edge.

7. The beam-column connection structure of the frame according to claim 6, characterized in that: The column (1) is a U-shaped column, the wall surface of the column (1) facing the end of the crossbeam (2) is a second connecting edge (7), and the connecting nut is a rivet nut (6) fixed on the second connecting edge (7) by riveting.

8. The beam-column connection structure of the frame according to any one of claims 1 to 3, characterized in that: The pin inserted into the pin hole is an elastic cylindrical pin (5).

9. A switch cabinet, characterized in that: The frame of the switch cabinet adopts the beam-column connection structure of the frame described in any one of claims 1 to 8.

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