Assembled switchgear general base and construction method thereof

Abstract

The application discloses a general foundation of an assembled switch cabinet and a construction method thereof, and relates to the technical field of switch cabinets. The general foundation of the assembled switch cabinet comprises at least two groups of foundation units, and each foundation unit comprises two main columns. A plurality of receiving plates are detachably arranged in the installation spaces. The upper ends of the main columns and the auxiliary columns are provided with rectangular base plates. Limiting blocks are arranged at the four corners of the base plates. Cross-shaped grooves are arranged on the base plates corresponding to the limiting blocks. The limiting blocks are in sliding connection with the cross-shaped grooves. The detachable arrangement of the plurality of receiving plates enables a user to independently adjust according to the wiring conditions of specific switch cabinets, thereby realizing the general performance of the foundation. The cross-shaped grooves can be used to adjust the positions of the limiting blocks, thereby reducing the straightness requirements of the first beam columns and the auxiliary columns, and facilitating installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet foundation, and more particularly to a general foundation of assembled switch cabinet and a construction method thereof. BACKGROUND

[0002] As one of the key equipments of a substation, a switch cabinet mainly plays the roles of switching, controlling and protecting in the process of power transmission and distribution. When installing the switch cabinet, an overhead platform needs to be constructed on the ground inside the substation. In the traditional way, the overhead platform is supported by cement or reinforced concrete. The construction period of such overhead platform is long, which seriously restricts the construction speed of the substation.

[0003] In recent years, an overhead platform formed by connecting vertical columns and cross beams has appeared. Specifically, the vertical columns are connected to one end of the cross beams, and a supporting plane is arranged on the cross beams to support the switch cabinet. Since the circuit of the switch cabinet is complex, the traditional overhead platform is punched and wired according to different wiring conditions of the switch cabinet. However, such method has poor versatility and is troublesome to use due to different wiring routes and quantities of different switch cabinets. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a general foundation of assembled switch cabinet and a construction method thereof. By arranging a plurality of detachable receiving plates, the user can independently adjust according to different wiring conditions of different switch cabinets, thereby improving the versatility.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a general foundation of assembled switch cabinet, comprising at least two groups of foundation units arranged in an array, wherein each foundation unit comprises at least two main vertical columns, a first beam column is arranged between adjacent main vertical columns and connected to each other through the first beam column, at least four first beam columns enclose a rectangular receiving space, at least four main vertical columns enclose a wiring space, the receiving space and the wiring space are arranged in a vertical manner, at least two second beam columns are arranged in the receiving space in an array and separate the receiving space into a plurality of mounting spaces through the at least two second beam columns, auxiliary vertical columns are arranged at both ends of the second beam column corresponding to the foundation unit, the auxiliary vertical columns are used to receive one end of the second beam column, a plurality of receiving plates are detachably arranged in the mounting space, the plurality of receiving plates are connected to each other to form a receiving surface, a wiring channel connecting the receiving space and the wiring space is formed by detaching the receiving plates, rectangular base plates are arranged at the upper ends of the main vertical columns and the auxiliary vertical columns, limit blocks are arranged at the four corners of the base plates, cross-shaped grooves are arranged on the base plates corresponding to the limit blocks, the limit blocks and the cross-shaped grooves are in sliding connection, a clamping space is formed between adjacent limit blocks and used to clamp the first beam column or the second beam column.

[0006] As a further improvement of the application, the upper end of the main column and the auxiliary column is sleeved with a mounting cover, the base plate is arranged corresponding to the upper surface of the mounting cover, the lower end surface of the base plate is arranged with an insertion block, one end of the insertion block is in contact with the outer side of the mounting cover, the base plate is inserted with a support plate through the insertion block, one side of the support plate is provided with an insertion slot and is inserted with the insertion block, and the other side is in contact with the outer side of the mounting cover.

[0007] As a further improvement of the application, the outer side of the base plate is provided with a bolt corresponding to the cross-shaped slot, one end of the bolt passes through the base plate and is in contact with the limiting block, the bolt is threadedly connected with the base plate, and the bolt is used to keep the limiting block in contact with one side of the first beam column or the second beam column.

[0008] As a further improvement of the application, the first beam column and the second beam column each include an upper plate, a middle plate and a lower plate, the upper plate, the middle plate and the lower plate are connected with each other and form an I-shaped structure, the middle plate and the lower plate each extend outward at both ends to form a connecting end, the connecting end is used to be inserted into the clamping space, and the horizontal height of the upper plate is higher than that of the limiting block.

[0009] As a further improvement of the application, the upper end surface of the limiting block is provided with a contact plate, the contact plate is connected with the base plate through a screw rod, the contact plate is used to contact one end of the upper plate, the upper end surface of the contact plate is consistent with the horizontal height of the upper end surface of the upper plate, the upper plate is provided with a first baffle along the length direction, the first baffle forms an included angle with the upper end surface of the upper plate, and the included angle is used to receive one side of the receiving plate.

[0010] As a further improvement of the application, the upper plate is provided with an auxiliary beam, the auxiliary beam is connected with the upper plate, and the two ends of the auxiliary beam are connected with the contact plate.

[0011] As a further improvement of the application, the contact plate is provided with a second baffle corresponding to the two sides of the auxiliary beam, the second baffle is arranged corresponding to the first baffle, and the two sides of the second baffle are in contact with the auxiliary beam and the first baffle respectively.

[0012] A general foundation construction method of a spliced switch cabinet is used to construct the general foundation of the spliced switch cabinet.

[0013] Step one: vertically placing four main columns to form a rectangular structure, and fixing the lower end of the four main columns to the ground; step two: symmetrically arranging at least four auxiliary columns between two main columns, so that the two main columns and the auxiliary columns are on the same straight line, and the lower end of the auxiliary column is fixed to the ground;

[0014] Step three: twisting the bolt, and manually moving the limiting block to the outer side of the base plate, so that the clamping space corresponding to the auxiliary column is the maximum value;

[0015] Step four: hoist two first beam columns, set two first beam columns respectively corresponding to two sides of the auxiliary column, so that one first beam column end is inserted into two end clamping space respectively, and the first beam column penetrates through the auxiliary column corresponding clamping space;

[0016] Step five: twist the bolt on the main column, so that the bolt pushes two limit blocks close to each other, and fixes and limits the two ends of the first beam column;

[0017] Step six: twist the bolt on the auxiliary column, so that the bolt pushes two limit blocks close to each other, and fixes and limits the two sides of the first beam column;

[0018] Step seven: hoist two first beam columns again, so that the two ends of the first beam column are inserted into the corresponding clamping space of the two end main columns, and form a rectangular receiving space with the two first beam columns in step four;

[0019] Step eight: twist the bolt on the main column, so that the bolt pushes another limit block to move towards the first beam column, and fixes and limits the two sides of the first beam column;

[0020] Step nine: install the abutting plate on the corresponding limit block of the main column, and fix and connect it with the base plate through the countersunk screw;

[0021] Step ten: hoist two second beam columns in the receiving space, and make the two ends of the second beam column inserted into the corresponding clamping space of the two sides of the auxiliary column respectively, and the receiving space is divided into three installation spaces by the two second beam columns; Step eleven: hoist the auxiliary beam on the first beam column, and fix and connect it with the upper plate through the screw;

[0022] Step twelve: install the receiving plate in the installation space, and the edge of the receiving plate abuts against the angle.

[0023] The beneficial effects of the present application are:

[0024] 1. The detachable setting of multiple receiving plates enables users to adjust independently according to the specific switch cabinet wiring condition, so as to realize the basic general performance;

[0025] 2. The setting of the cross-shaped groove can adjust the position of the limit block, so as to reduce the straightness requirement of the first beam column and the auxiliary column, thereby facilitating installation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall schematic diagram of the present application;

[0027] Figure 2 It is the schematic diagram of the column and beam column installation of the present application;

[0028] Figure 3 It is the schematic diagram of the cross-shaped groove of the present application;

[0029] Figure 4 This is a schematic cross-sectional view of the bolt installation of the present invention;

[0030] Figure 5 This is a schematic diagram of the support plate installation of the present invention;

[0031] Figure 6 This is a schematic diagram of the installation of the first beam-column and the second beam-column of the present invention.

[0032] Reference numerals: 1. Main column; 2. First beam column; 3. Supporting space; 4. Wiring space; 5. Installation space; 6. Auxiliary column; 7. Second beam column; 8. Supporting plate; 9. Wiring channel; 10. Base plate; 11. Limiting block; 12. Cross-shaped groove; 13. Mounting cover; 14. Insert block; 15. Support plate; 16. Bolt; 17. Upper plate; 18. Middle plate; 19. Lower plate; 20. Connecting end; 21. Clamping space; 22. Abutment plate; 23. First baffle; 24. Angle; 25. Auxiliary beam; 26. Second baffle; 27. Slot; 28. Wiring path; 29. ​​Limiting piece; 30. Pre-set hole. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0034] like Figures 1-6As shown, a general-purpose foundation of an assembled switch cabinet includes at least two groups of foundation units arranged in an array. When a plurality of switch cabinets need to be installed continuously or a large-sized switch cabinet needs to be installed, a larger installation area can be obtained by connecting the foundation units in series and parallel. The foundation unit includes at least two main columns 1. First beam columns 2 are arranged between adjacent main columns 1 and are connected to each other by the first beam columns 2. In this embodiment, the number of main columns 1 is two and each is connected to one end of a first beam column 2. At least four first beam columns 2 form a rectangular receiving space 3. At least four main columns 1 form a wiring space 4. The receiving space 3 and the wiring space 4 are arranged vertically. At least two second beam columns 7 are arranged in the receiving space 3 and divide the receiving space 3 into a plurality of installation spaces 5. Auxiliary columns 6 are arranged at both ends of the second beam columns 7. The auxiliary columns 6 are used to receive one end of the second beam columns 7. A plurality of receiving plates 8 are detachably arranged in the installation space 5. The receiving plates 8 are connected to each other to form a receiving surface. A wiring channel 9 is formed by removing the receiving plates 8 to connect the receiving space 3 and the wiring space 4. Rectangular base plates 10 are arranged at the upper ends of the main columns 1 and the auxiliary columns 6. Limiting blocks 11 are arranged at the four corners of the base plates 10. Cross-shaped grooves 12 are arranged on the base plates 10 corresponding to the limiting blocks 11. The limiting blocks 11 are slidably connected to the cross-shaped grooves 12. Clamping spaces 21 are formed between adjacent limiting blocks 11 and are used to clamp the first beam columns 2 or the second beam columns 7. The detachable arrangement of the receiving plates 8 allows the user to adjust according to the specific wiring condition of the switch cabinet, thereby realizing the general-purpose performance of the foundation. The arrangement of the cross-shaped grooves 12 allows the position of the limiting blocks 11 to be adjusted, thereby reducing the installation precision requirement of the first beam columns 2 and the auxiliary columns 6, i.e., reducing the straightness requirement between the two first beam columns 2 and the auxiliary columns 6, thereby facilitating installation.

[0035] Preferably, mounting covers 13 are arranged at the upper ends of the main columns 1 and the auxiliary columns 6. The base plates 10 are arranged corresponding to the upper surfaces of the mounting covers 13. Insert blocks 14 are arranged on the lower end surfaces of the base plates 10. One end of the insert blocks 14 abuts against the outer side of the mounting covers 13, thereby improving the support capacity of the base plates 10. The base plates 10 are inserted with support plates 15 through the insert blocks 14. One side of the support plates 15 is provided with an insertion groove 27 and is inserted with the insert blocks 14. The other side abuts against the outer side of the mounting covers 13, thereby making the direction of the insertion groove 27 perpendicular to the stress direction of the support plate 15, thereby avoiding the stress of the support plate 15 causing the support plate 15 to return to the original position and causing the support to fail. In another embodiment, the insert blocks 14 are arranged on the outer surfaces of the mounting covers 13.

[0036] Preferably, the outer side of the substrate 10 corresponds to the cross-shaped groove 12 and is provided with a bolt 16, one end of the bolt 16 penetrating the substrate 10 and abutting against the limiting block 11, the bolt 16 being threadedly connected with the substrate 10, the bolt 16 being used to keep the limiting block 11 abutting against one side of the first beam column 2 or the second beam column 7, in use, by twisting the bolt 16, the one end of the bolt 16 abutting against the limiting block 11 to drive the limiting block 11 to move in the cross-shaped groove 12.

[0037] Preferably, the first beam column 2 and the second beam column 7 each include an upper plate 17, a middle plate 18 and a lower plate 19, the upper plate 17, the middle plate 18 and the lower plate 19 being connected with each other and forming an I-shaped structure, thereby ensuring the load-bearing capacity of the first beam column 2 and the second beam column 7, both ends of the middle plate 18 and the lower plate 19 extending outward to form a connecting end 20, the connecting end 20 being used to be inserted into the clamping space 21, the upper plate 17 being higher in horizontal height than the limiting block 11, thereby avoiding the upper plate 17 from abutting against the limiting block 11, thereby facilitating the installation of the first beam column 2 and the second beam column 7.

[0038] Preferably, the upper end surface of the limiting block 11 is provided with an abutting plate 22, the abutting plate 22 being connected with the substrate 10 through a screw rod, in the embodiment, after the connecting end 20 is inserted into the clamping space 21, the connecting end 20 is aligned with the limiting block 11, thereby making the central part of the substrate 10 form a reserved cavity, the reserved cavity being used to adapt to the tolerance of the connecting end 20, the screw rod being provided corresponding to the reserved cavity, one end of the screw rod penetrating the abutting plate 22 and being threadedly connected with the substrate 10, thereby realizing the fixation of the abutting plate 22, the abutting plate 22 being used to abut against one end of the upper plate 17, the upper end surface of the abutting plate 22 being consistent in horizontal height with the upper end surface of the upper plate 17, the upper plate 17 being provided with a first baffle 23 along the length direction, the first baffle 23 forming an included angle 24 with the upper end surface of the upper plate 17, the included angle 24 being used to receive one side of the receiving plate 8, thereby being able to arrange the edge of the switch cabinet corresponding to the upper end surface of the abutting plate 22, thereby increasing the stress in the longitudinal direction of the main stand column 1, thereby improving the support capacity for the switch cabinet, thereby being able to press the abutting plate 22 through the edge of the switch cabinet, thereby fixing the position of the limiting block 11.

[0039] Preferably, the upper plate 17 is provided with an auxiliary beam 25, the auxiliary beam 25 being provided corresponding to the auxiliary stand column 6, the auxiliary beam 25 being connected with the upper plate 17, in the embodiment, the abutting plate 22 corresponds to a countersunk screw as the screw rod, thereby avoiding the screw rod from abutting against the auxiliary beam 25 during installation, the auxiliary beam 25 being provided with a through wiring passage 28 along the length direction.

[0040] Preferably, the abutment plate 22 is provided with a second baffle plate 26 on both sides of the auxiliary beam 25, the second baffle plate 26 is provided corresponding to the first baffle plate 23, and the second baffle plate 26 is abutted on both sides of the auxiliary beam 25 and the first baffle plate 23 respectively, so that the second baffle plate can limit the auxiliary beam 25 and connect with the first baffle plate 23 at the same time, thereby expanding the range of the included angle 24.

[0041] Preferably, the auxiliary column 6 is provided with a limiting piece 29 on the upper surface of the limiting block 11, the number of the limiting piece 29 is 2 and the limiting piece 29 is symmetrically arranged on both sides of the auxiliary beam 25, in use, when the installation of the auxiliary beam 25 is completed, the limiting piece 29 is placed on both sides of the auxiliary beam 25, wherein the limiting piece 29 is provided with a preset hole 30, and the limiting piece 29 is connected with the limiting block 11 by bolt connection, because the positions of the limiting blocks 11 are different, so that there is no screw hole on the upper surface of the limiting block 11 in the initial state, that is, only when the limiting piece 29 is placed, the bolt is driven through the preset hole 30 and the threaded hole on the limiting block 11 by a punch, and then the limiting piece 29 is bolted with the limiting block 11.

[0042] A general foundation construction method for assembling switchgear, which is used for constructing the general foundation for assembling switchgear described above, and the construction method comprises the following steps:

[0043] Step one: four main columns 1 are vertically placed to form a rectangular structure, and the lower ends of the four main columns 1 are fixed to the ground;

[0044] Step two: at least four auxiliary columns 6 are symmetrically arranged and arranged between two main columns 1, so that the two main columns 1 and the auxiliary columns 6 are on the same straight line, and the lower ends of the auxiliary columns 6 are fixed to the ground;

[0045] Step three: twist the bolt 16, and manually move the limiting block 11 outward of the base plate 10, so that the clamping space 21 corresponding to the auxiliary column 6 is the maximum;

[0046] Step four: hoist two first beam columns 2, and arrange the two first beam columns 2 corresponding to the two auxiliary columns 6 respectively, so that one end of each first beam column 2 is inserted into the clamping space 21 at both ends, and the first beam column 2 penetrates the clamping space 21 corresponding to the auxiliary column 6;

[0047] Step five: twist the bolt 16 on the main column 1, so that the bolt 16 pushes the two limiting blocks 11 close to each other, and fixes and limits the two ends of the first beam column 2;

[0048] Step six: twist the bolt 16 on the auxiliary column 6, so that the bolt 16 pushes the two limiting blocks 11 close to each other, and fixes and limits the two sides of the first beam column 2;

[0049] Step seven: hoist two first beam columns 2 again, so that the two ends of the first beam columns 2 are inserted into the corresponding clamping spaces 21 of the two end main columns 1, and a rectangular receiving space 3 is formed with the two first beam columns 2 in step four;

[0050] Step eight: twist the bolts 16 on the main columns 1, so that the bolts 16 push the other limiting blocks 11 to move towards the first beam columns 2, and fix and limit the two sides of the first beam columns 2;

[0051] Step nine: install the abutting plates 22 on the corresponding limiting blocks 11 of the main columns 1, and fix and connect them with the base plates 10 through countersunk screws;

[0052] Step ten: hoist two second beam columns 7 in the receiving space 3, and insert the two ends of the second beam columns 7 into the corresponding clamping spaces 21 of the two side auxiliary columns 6, respectively, so that the receiving space 3 is divided into three installation spaces 5 by the two second beam columns 7;

[0053] Step eleven: hoist the auxiliary beams 25 on the first beam columns 2, and fix and connect them with the upper plates 17 through screws; Step twelve: install the receiving plates 8 in the installation spaces 5, abut the edges of the receiving plates 8 with the included angles 24, and install the limiting pieces 29 on the upper end faces of the corresponding limiting blocks 11 of the auxiliary columns 6, and abut the two sides of the auxiliary beams 25, after the position of the limiting pieces 29 is confirmed, drive the bolts through the pre-set holes 30 and fix and connect them with the limiting blocks 11 through a punch.

[0054] Preferably, in the embodiment, the main columns 1 and the auxiliary columns 6 are provided with bases at the lower ends, and are fixed and connected with the ground through the screw holes on the bases.

[0055] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiment, and any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A universal base for an assembled switchgear cabinet, characterized in that: The utility model provides a kind of foundation unit, including at least two groups of arrangement of basic unit, the basic unit includes at least two main columns (1), first beam column (2) is provided between adjacent main column (1) and is connected with each other by first beam column (2), at least four first beam column (2) surrounds rectangular receiving space (3), at least four main columns (1) surround wiring space (4), receiving space (3) and wiring space (4) are arranged, at least two second beam columns (7) are arranged in receiving space (3) and are separated by at least two second beam columns (7) and form multiple installation space (5), the auxiliary column (6) of the two ends of second beam column (7) is provided in the basic unit, the auxiliary column (6) is used to receive second beam column (7) one end, multiple receiving plates (8) are detachably arranged in installation space (5), multiple receiving plates (8) are connected to form receiving surface, by removing receiving plate (8), wiring channel (9) that wiring space (4) is formed to the receiving space (3) is communicated, the upper end of main column (1) and auxiliary column (6) is equipped with rectangular base plate (10), the four corners of base plate (10) are equipped with limiting block (11), base plate (10) is equipped with cross slot (12) corresponding to limiting block (11), limiting block (11) and cross slot (12) are slidably connected, the clamping space (21) is formed between adjacent limiting block (11) and is used to clamp first beam column (2) or second beam column (7).

2. The universal base of the assembled switchgear cabinet according to claim 1, characterized in that: The upper end of main column (1) and auxiliary column (6) is equipped with mounting cover (13), the upper surface of base plate (10) is provided corresponding to mounting cover (13), the lower end surface of base plate (10) is arranged with plug (14), one end of plug (14) is in contact with the outside of mounting cover (13), base plate (10) is inserted with support plate (15) by plug (14), one side of support plate (15) is provided with insertion slot (27) and is inserted with plug (14), and the other side is in contact with the outside of mounting cover (13).

3. The universal base of the assembled switchgear cabinet according to claim 1, characterized in that: The outside of base plate (10) is provided with bolt (16) corresponding to cross slot (12), one end of bolt (16) passes through base plate (10) and is in contact with limiting block (11), bolt (16) is threadedly connected with base plate (10), and bolt (16) is used to keep limiting block (11) in contact with one side of first beam column (2) or second beam column (7).

4. The universal base of the assembled switchgear cabinet according to claim 1, characterized in that: First beam column (2) and second beam column (7) include upper plate (17), middle plate (18) and lower plate (19), the upper plate (17), middle plate (18) and lower plate (19) are connected to each other and form an I-shaped structure, the two ends of middle plate (18) and lower plate (19) extend outward to form connecting end (20), the connecting end (20) is used to be inserted into clamping space (21), and the horizontal height of upper plate (17) is higher than the horizontal height of limiting block (11).

5. A universal base for an assembled switchgear cabinet according to claim 4, characterized in that: The upper end face of the limiting block (11) is provided with a resisting plate (22), the resisting plate (22) is connected with the base plate (10) through a screw rod, the resisting plate (22) is used for resisting one end of the upper plate (17), the upper end face of the resisting plate (22) is consistent with the upper end face of the upper plate (17) in height, the upper plate (17) is provided with a first baffle (23) along the length direction, the first baffle (23) forms an included angle (24) with the upper end face of the upper plate (17), and the included angle (24) is used for supporting one side of the supporting plate (8).

6. A universal base for an assembled switchgear cabinet according to claim 5, characterized in that: The upper plate (17) is provided with an auxiliary beam (25), the auxiliary beam (25) is connected with the upper plate (17), and the two ends of the auxiliary beam (25) are connected with the resisting plate (22).

7. A universal base for an assembled switchgear cabinet according to claim 6, characterized in that: The resisting plate (22) is provided with a second baffle (26) on the two sides of the auxiliary beam (25), the second baffle (26) is arranged correspondingly to the first baffle (23), and the two sides of the second baffle (26) abut against the auxiliary beam (25) and the first baffle (23) respectively.

8. A method for building a prefabricated switchgear universal foundation according to any one of claims 1 to 7, characterized in that, The construction method comprises the following steps: Step one: four main columns (1) are vertically placed and form a rectangular structure, and the lower ends of the four main columns (1) are fixed to the ground; Step two: at least four auxiliary columns (6) are symmetrically arranged and arranged between two main columns (1), so that the two main columns (1) and the auxiliary columns (6) are on the same straight line, and the lower ends of the auxiliary columns (6) are fixed to the ground; Step three: twist the bolt (16), and manually move the limiting block (11) outwardly of the base plate (10), so that the clamping space (21) corresponding to the auxiliary column (6) is the maximum value; Step four: hoist two first beam columns (2), and arrange the two first beam columns (2) corresponding to the two auxiliary columns (6) respectively, so that one end of each first beam column (2) is inserted into the two end clamping spaces (21) respectively, and the first beam column (2) penetrates through the auxiliary column (6) corresponding to the clamping space (21); Step five: twist the bolt (16) on the main column (1), so that the bolt (16) pushes the two limiting blocks (11) close to each other, and the two ends of the first beam column (2) are fixed and limited; Step six: twist the bolt (16) on the auxiliary column (6), so that the bolt (16) pushes the two limiting blocks (11) close to each other, and the two sides of the first beam column (2) are fixed and limited; Step seven: hoist two first beam columns (2) again, so that the two ends of the first beam column (2) are inserted into the two end main columns (1) corresponding to the clamping space (21), and form a rectangular supporting space (3) with the two first beam columns (2) in step four; Step eight: twist the bolt (16) on the main column (1), so that the bolt (16) pushes the other limiting block (11) to move in the direction of the first beam column (2), and the two sides of the first beam column (2) are fixed and limited; Step nine: install the resisting plate (22) on the limiting block (11) corresponding to the main column (1), and fixedly connect the resisting plate (22) with the base plate (10) through a countersunk screw. Step ten: two second beam columns (7) are hoisted in the receiving space (3), and the two ends of the second beam columns (7) are respectively inserted into the corresponding clamping spaces (21) of the two side auxiliary columns (6), and the receiving space (3) is divided into three installation spaces (5) by the two second beam columns (7); Step eleven: the auxiliary beam (25) is hoisted on the first beam column (2) and fixedly connected with the upper plate (17) through screws; Step twelve: the receiving plate (8) is arranged in the installation space (5), and the edge of the receiving plate (8) is in contact with the included angle (24).

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