CN111786337A

CN111786337A - Construction method of reinforced bus duct

Info

Publication number: CN111786337A
Application number: CN202010715428.XA
Authority: CN
Inventors: 邱兴平; 胡永贵; 阳成; 杨伟明; 杨珀麟
Original assignee: 11th Construction Co ltd Of Sichuan Province
Current assignee: 11th Construction Co ltd Of Sichuan Province
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-10-16
Anticipated expiration: 2040-07-22
Also published as: CN111786337B

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a construction method of a reinforced bus duct, which solves the problems that the bus duct in the prior art cannot be used universally and is easy to deform. The invention comprises the following steps: s1: construction preparation: the method comprises the steps of manufacturing a bus duct and a tool type hanger; s2: positioning and paying off: finding a horizontal line or a vertical line from the initial end to the terminal end of the bus duct according to a design drawing, and determining and marking the specific position of the support; s3: mounting a fixing piece: mounting a metal expansion bolt at the position determined in step S2; s4: installation of tool type hanging bracket: mounting a tool hanger on the metal expansion bolt in step S3; s5: and (3) bus duct installation: installing the bus duct on the tool type lifting frame in the step S4; s6: installing a grounding protection wire; s7: and debugging and electrifying the bus duct. The bus duct can change the size, is universal for buses of various types, is more convenient to construct, saves the construction cost, and is suitable for the construction of bus ducts.

Description

Construction method of reinforced bus duct

Technical Field

The invention belongs to the technical field of building construction, and particularly relates to a construction method of a reinforced bus duct.

Background

The bus duct is a closed metal device formed from copper and aluminium bus posts, and is used for distributing large power for every element of dispersion system. Wire and cable have been increasingly replaced in indoor low voltage power transmission mains engineering projects. The bus duct uses copper bars or aluminum as a conductor, so that the bus duct has large current capacity and good electrical and mechanical properties, and uses a metal groove as a shell, so that the bus duct is incombustible, has high safety and reliability and long service life, obviously reduces the occupied area of equipment compared with the traditional power distribution or the traditional power distribution, has beautiful appearance, and is very favorable for the construction and the power distribution of large buildings.

With the emergence of modern engineering facilities and equipment, the power consumption of various industries is increased rapidly, particularly, the appearance of numerous high-rise buildings and large-scale factory workshops, the traditional cable serving as a power transmission lead cannot meet the requirement in a large-current transmission system, and the parallel connection of multiple cables brings inconvenience to on-site installation, construction and connection. The plug-in type bus duct is produced as a novel distribution wire, compared with the traditional cable, the bus duct fully embodies the superiority of the novel bus duct in large current transmission, simultaneously, because of adopting a new technology and a new process, the contact resistance and the temperature rise of the joint of two end parts of the bus duct and the plug-in part of the branching port are greatly reduced, and high-quality insulating materials are used in the bus duct, thereby improving the safety and reliability of the bus duct and improving the whole system.

Traditional bus duct comprises apron and curb plate, and in order to alleviate bus duct's weight, the thickness of casing is generally less. Therefore, the rigidity difference of the bus duct is easy to deform and the bearing capacity is weak, the requirement amount of the hanging frames is large when the bus duct is installed, the distance between the two hanging frames is small, the bus duct is difficult to install, the stability of the structure is poor after the bus duct is installed, and the material cost and the labor cost of installation are increased. And the size of traditional bus duct is fixed, and the bus duct of a specification can only be used for installing the generating line of corresponding specification, can't accomplish universally, brings more inconvenience for the installation of bus duct.

Disclosure of Invention

Aiming at the problems that the bus ducts cannot be used universally and the bus ducts are easy to deform in the prior art, the invention provides a construction method of a reinforced bus duct, which aims to: the universality and the rigidity of the bus duct are improved, and the construction cost is saved.

The technical scheme adopted by the invention is as follows:

a construction method of a reinforced bus duct comprises the following steps:

s1: construction preparation: the method comprises the steps of manufacturing a bus duct and a tool type hanger;

s2: positioning and paying off: finding a horizontal line or a vertical line from the initial end to the terminal end of the bus duct according to a design drawing, and determining and marking the specific position of the support;

s3: mounting a fixing piece: mounting a metal expansion bolt at the position determined in step S2;

s4: installation of tool type hanging bracket: mounting a tool hanger on the metal expansion bolt in step S3;

s5: and (3) bus duct installation: installing the bus duct on the tool type lifting frame in the step S4;

s6: installing a grounding protection wire;

s7: and debugging and electrifying the bus duct.

Preferably, between the step S4 and the step S5, a support plate is installed on the tool hanger, and then the bus duct is installed on the support plate, wherein the support plate comprises an upper plate and a lower plate which are parallel to each other, and a rib is arranged between the upper plate and the lower plate and is perpendicular to the upper plate and the lower plate.

After adopting this preferred scheme, set up the backup pad, can increase the area of contact between bus duct and the instrument formula gallows, increase the rigidity of contact surface to can increase the installation interval of instrument formula gallows, material saving and manual work. The vertical setting of floor can improve the bearing capacity of backup pad in vertical direction, and the mode that adopts the double-layered floor between two boards can practice thrift material under the prerequisite that does not influence bearing effect moreover.

Preferably, the bus duct in step S1 includes a first cover plate, a second cover plate, a first side plate, a second side plate, a first bottom plate and a second bottom plate, the first side plate and the second side plate are symmetrically disposed, upper and lower ends of the first side plate are respectively fixedly connected to the first cover plate and the first bottom plate, upper and lower ends of the second side plate are respectively fixedly connected to the second cover plate and the second bottom plate, the first cover plate is slidably connected to the second cover plate, and the first bottom plate is slidably connected to the second bottom plate.

After the preferred scheme is adopted, the width of the bus duct can be adjusted through the sliding connection of the first cover plate and the second cover plate and the sliding connection of the first bottom plate and the second bottom plate. When the buses with different specifications need to be installed, the first bottom plate and the second bottom plate slide relatively, the first cover plate and the second cover plate slide relatively, and when the required size is reached, the first bottom plate and the second bottom plate are fixed, and the first cover plate and the second cover plate are fixed simultaneously. The invention can change the size, thereby being universal to buses of various types, being more convenient to construct and saving the construction cost.

Preferably, the first cover plate, the second cover plate, the first bottom plate and the second bottom plate are all provided with a plurality of first reinforcing ribs along the length direction, and the first side plate and the second side plate are provided with a plurality of second reinforcing ribs along the length direction.

After the adoption of the optimal scheme, the bearing capacity of the whole bus duct can be improved under the condition that the thickness of the plates is not increased, so that the horizontal distance of the hanging bracket can be increased during installation, the joint of the bus duct is reduced, the resistance is reduced, the workload of procedures such as pre-embedding a fixing piece, installing the hanging bracket and installing a grounding protection line is greatly reduced, and the construction period is shortened.

Preferably, the first cover plate is connected with a first bolt, the second cover plate is provided with a strip-shaped hole, the first bolt is connected with the strip-shaped hole, the first bottom plate is connected with the first bolt, the second bottom plate is provided with the strip-shaped hole, and the first bolt is connected with the strip-shaped hole.

After the preferable scheme is adopted, when the size of the bus duct needs to be changed, only the first bolt needs to be unscrewed, then the second cover plate and the second bottom plate slide along the strip-shaped hole, and after the second cover plate and the second bottom plate slide in place, the first bolt is screwed to fix the first cover plate and the second cover plate, and the first bottom plate and the second bottom plate are fixed. The operation is simple and quick, and the construction efficiency can be improved.

Preferably, a seal ring is disposed between the first bolt and the first cover plate.

After adopting this preferred scheme, the sealing washer can prevent to leak from first bolt department, strengthens the waterproof ability of bus duct.

Preferably, the first cover plate, the second cover plate, the first bottom plate and the second bottom plate are provided with wing plates, protrusions are arranged on the wing plates, grooves are formed in the first side plate and the second side plate, the grooves are matched with the protrusions in size, the wing plates are connected with the first side plate and the second side plate through second bolts, and sealing strips are arranged in the grooves.

After adopting this preferred scheme, the pterygoid lamina can increase heat radiating area to improve the radiating efficiency, the arch on the pterygoid lamina can further increase heat radiating area, improves the radiating efficiency, and pterygoid lamina and curb plate pass through protruding and recess interlock mutually moreover, can improve the waterproof performance between curb plate and the pterygoid lamina. The second bolt is screwed, so that the sealing strips in the bulges and the grooves are mutually extruded, the sealing performance between the wing plate and the side plate can be further enhanced, and a better waterproof effect is achieved.

Preferably, the tool type hanger described in step S1 includes two first columns, each first column is connected to a screw, the screw is provided with a connecting block and a first nut, the connecting block is located above the first nut, the connecting block is connected to a second column, and a cross beam is provided between the two second columns.

After adopting this preferred scheme, the second stand can slide on the screw rod to adjust the height of crossbeam, through screwing up first nut, can fix the crossbeam, thereby adjust the height of bus duct.

Preferably, a first sliding groove is formed in the cross beam, two limiting blocks are arranged on the first sliding groove, and the limiting blocks slide in the first sliding groove and are fixed through bolts.

After the preferred scheme is adopted, the limiting blocks can slide on the cross beams, the limiting blocks slide to the two sides of the cable bridge and then the bolts are screwed, so that the bus duct can be fixed on the cross beams, and the bus duct is prevented from being displaced due to the action of vibration or other external forces.

Preferably, the second column is provided with a second sliding groove along the length direction, the cross beam is connected with the second sliding groove in a sliding manner, and second nuts are arranged at two ends of the cross beam.

After adopting this preferred scheme, the crossbeam can slide from top to bottom at the second stand to it is fixed through the second nut at both ends, thereby adjust the height of bus duct.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. set up the backup pad, can increase the area of contact between bus duct and the instrument formula gallows, increase the rigidity of contact surface to can increase the installation interval of instrument formula gallows, material saving and manual work. The vertical setting of floor can improve the bearing capacity of backup pad in vertical direction, and the mode that adopts the double-layered floor between two boards can practice thrift material under the prerequisite that does not influence bearing effect moreover.

2. Through first apron and second apron sliding connection and first bottom plate and second bottom plate sliding connection, can realize the regulation of busway width. When the buses with different specifications need to be installed, the first bottom plate and the second bottom plate slide relatively, the first cover plate and the second cover plate slide relatively, and when the required size is reached, the first bottom plate and the second bottom plate are fixed, and the first cover plate and the second cover plate are fixed simultaneously. The invention can change the size, thereby being universal to buses of various types, being more convenient to construct and saving the construction cost.

3. The reinforcing rib is arranged, so that the bearing capacity of the whole bus duct is improved under the condition that the thickness of a plate is not increased, the horizontal distance of the hanging bracket can be increased during installation, the seam of the bus duct is reduced, the joint of the bus duct is reduced, the resistance is reduced, the workload of procedures such as pre-buried fixing pieces, installation hanging brackets and installation grounding protection lines is greatly reduced, and the construction period is shortened.

4. When the size of the bus duct needs to be changed, only the first bolt needs to be unscrewed, then the second cover plate and the second bottom plate slide along the strip-shaped hole, and after the second cover plate slides in place, the first bolt is screwed to fix the first cover plate and the second cover plate, and the first bottom plate and the second bottom plate are fixed. The operation is simple and quick, and the construction efficiency can be improved.

5. Be provided with the sealing washer between first bolt and the first apron, can prevent to leak from first bolt department, strengthen the waterproof ability of bus duct.

6. The pterygoid lamina can increase heat radiating area to improve the radiating efficiency, the arch on the pterygoid lamina can further increase heat radiating area, improves the radiating efficiency, and pterygoid lamina and curb plate pass through protruding and recess interlock mutually moreover, can improve the waterproof performance between curb plate and the pterygoid lamina. The second bolt is screwed, so that the sealing strips in the bulges and the grooves are mutually extruded, the sealing performance between the wing plate and the side plate can be further enhanced, and a better waterproof effect is achieved.

7. The second stand can slide on the screw rod to adjust the height of crossbeam, through screwing up first nut, can fix the crossbeam, thereby adjust the height of bus duct.

8. The limiting blocks can slide on the cross beams, the limiting blocks slide to the two sides of the cable bridge and then the bolts are screwed, so that the bus duct can be fixed on the cross beams, and the bus duct is prevented from being displaced due to the action of vibration or other external forces.

9. The crossbeam can slide from top to bottom at the second stand to it is fixed through the second nut at both ends, thereby adjust the height of bus duct.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a flow chart of the construction process of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural diagram of a bus duct;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is an enlarged view of a portion B in fig. 3.

The heat dissipation structure comprises 1-a first cover plate, 2-a second cover plate, 3-a first side plate, 4-a second side plate, 5-a first reinforcing rib, 6-a second reinforcing rib, 7-a first bottom plate, 8-a strip-shaped hole, 9-a second bottom plate, 10-a wing plate, 11-a protrusion, 12-a heat dissipation protrusion, 13-a first bolt, 14-a second bolt, 15-a sealing strip, 16-a sealing ring, 17-a first upright column, 18-a screw, 19-a second upright column, 20-a limiting block, 21-a cross beam, 22-a supporting plate, 23-a connecting block, 24-a first nut and 25-a second nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail with reference to fig. 1 to 5.

A construction method of a reinforced bus duct comprises the following steps:

s6: installing a grounding protection wire;

s7: and debugging and electrifying the bus duct.

Between the step S4 and the step S5, the support plate 22 is mounted on the tool hanger, and then the bus duct is mounted on the support plate 22, where the support plate 22 includes an upper plate and a lower plate parallel to each other, and a rib is provided between the upper plate and the lower plate, and the rib is perpendicular to the upper plate and the lower plate.

In this embodiment, the bus duct includes first apron 1, second apron 2, first curb plate 3, second curb plate 4, first bottom plate 7 and second bottom plate 9, first curb plate 3 sets up with second curb plate 4 symmetry, the upper and lower both ends of first curb plate 3 pass through second bolt 14 with first apron 1 and first bottom plate respectively and are connected, the upper and lower both ends of second curb plate 4 pass through second bolt 14 with second apron 5 and second bottom plate 9 respectively and are connected, first apron 1 and second apron 2 sliding connection, first bottom plate 7 and second bottom plate 9 sliding connection.

In this embodiment, the first cover plate 1, the second cover plate 2, the first bottom plate 7 and the second bottom plate 9 are respectively provided with one first reinforcing rib 5 along the length direction.

In this embodiment, the first side plate 3 and the second side plate 4 are provided with two second reinforcing ribs 6 along the length direction, and the second reinforcing ribs 6 are arc-shaped.

In this embodiment, the first cover plate 1 is provided with a screw hole, the screw hole is connected with a first bolt 13, the second cover plate 2 is provided with a strip-shaped hole 8, and the first bolt 13 is connected with the strip-shaped hole 8. The first bottom plate 7 is also provided with a screw hole, a first bolt 13 is connected in the screw hole, a strip-shaped hole 8 is formed in the second bottom plate 9, and the first bolt 13 is connected with the strip-shaped hole 8. The first bolt 13 can slide in the strip-shaped hole 8, thereby adjusting the width of the bus duct.

In the present embodiment, the first cover plate 1 and the first base plate 7 are located on the outer side, and the second cover plate 2 and the second base plate 9 are located on the inner side. The first cover plate 1 and the first bottom plate 7 are provided with cathetuses for limiting the position of the second cover plate 2 and the second bottom plate 9, and the cathetuses also can prevent water above from flowing into the gap between the first cover plate 1 and the second cover plate 2.

In this embodiment, a seal ring 16 is disposed between the first bolt 13 and the first cover plate 1. The sealing ring 16 is used to prevent water from entering the bus duct from the first bolt.

In this embodiment, the first cover plate 1, the second cover plate 2, the first bottom plate 7 and the second bottom plate 9 are all provided with wing plates 10, and the wing plates 10 are integrally formed with the first cover plate 1, the second cover plate 2, the first bottom plate 7 and the second bottom plate 9.

The height of the upper surface of the wing plate 10 is lower than the height of the contact surface between the first cover plate 1 and the second cover plate 2 (in this embodiment, the height of the second cover plate 2 is equal to the height of the wing plate 10).

Be provided with arch 11 on the pterygoid lamina 10, all be provided with the recess on first curb plate 3 and the second curb plate 4, recess and protruding 11 size phase-match, pterygoid lamina 11 passes through second bolt 14 with first curb plate 3 and second curb plate 4 and is connected. The protrusion 11 on the wing plate 10 can further increase the heat dissipation area and improve the heat dissipation efficiency, and the wing plate 10 and the side plate are mutually occluded through the protrusion 11 and the groove, so that the waterproof performance between the side plate and the wing plate 10 can be improved.

A sealing strip 15 is arranged in the groove. The second bolt 14 is screwed up, so that the protrusion 11 and the sealing strip 15 in the groove are mutually extruded, the sealing performance between the wing plate 10 and the side plate can be further enhanced, and a better waterproof effect is achieved.

The outer sides of the first side plate 3 and the second side plate 4 are provided with heat dissipation protrusions 12 to increase the heat dissipation area and further improve the heat dissipation efficiency.

The tool type hanger described in step S1 includes two first vertical columns 17, the lower end of each first vertical column 17 is connected with a screw 18, the outer side of the screw 18 is sleeved with a connecting block 23 and a first nut 24, the connecting block 23 can slide on the screw 18 and is located above the first nut 24, the connecting block 23 is connected with a second vertical column 19, and a cross beam 21 is arranged between the two second vertical columns 19. The support plate 22 is mounted on the cross member 21. The second upright column 19 can slide on the screw 18, and the height of the cross beam 21 can be adjusted by rotating the first nut 24, so that the height of the bus duct is adjusted.

The beam 21 is provided with a first sliding groove, the first sliding groove is provided with two limiting blocks 20, and the limiting blocks 20 slide in the first sliding groove and are fixed through bolts. The limiting blocks 20 can slide on the cross beam 21, the limiting blocks 20 slide to the two sides of the bus duct, then bolts on the limiting blocks 20 are screwed, the limiting blocks 20 can be fixed, the bus duct is fixed on the cross beam, and the bus duct is prevented from being displaced due to the action of vibration or other external forces.

The second column 19 is provided with a second sliding groove along the length direction, the beam 21 is connected with the second sliding groove in a sliding manner, and the two ends of the beam 21 are provided with second nuts 25. The cross beam 21 can slide up and down on the second upright column 19 and is fixed through second nuts 25 at two ends, so that the height of the bus duct is adjusted.

When the bus duct is installed, conventional accessories such as straight line sections, bend-throughs and tee joints of the bus duct are installed firstly, then bend-throughs and non-standard parts in various special shapes are measured on site, the overall dimension is provided to a manufacturer in time, and then the manufacturer carries out factory processing, so that the engineering installation quality is ensured.

The straight-line section of the bus duct is connected by adopting a connecting plate and is fastened by a gasket, a spring gasket and a nut, the interface gap is tight and level, the bus is concentric with the shell, and the allowable deviation is plus or minus 0.5 mm; when the bus duct sections are connected with each other, the bus ducts and the shells of two adjacent sections are aligned, the phase sequence is accurate, and the buses and the shells are not subjected to additional stress after connection.

And the terminal of the bus duct is plugged by a special terminal.

The distance between the tool type hanging brackets is not more than 4.5 m.

And adopting corresponding checking and connecting boxes at the branch joints of the circuit.

The metal shells of each section of bus duct are reliably connected, and the total length of the bus duct is reliably connected with the protection conductor by no less than 2 parts and is connected with a grounding (PE) trunk line.

The metal casing of the enclosed and plugged bus is only used as a protective casing and cannot be used for protecting a grounding main line (PE line), but the casing must be grounded. The application between each section of bus is not less than 16mm²The soft copper ribbon is crossed to connect the bus shells into a whole.

After the equipment is connected with the plug-in type bus and the connection is installed, a voltage withstand test is carried out before the bus is powered on, the bus below 500V can be shaken by a 500V shaking meter, and the insulation resistance is not less than 0.5M omega.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. A construction method of a reinforced bus duct is characterized in that: the method comprises the following steps:

s6: installing a grounding protection wire;

s7: and debugging and electrifying the bus duct.

2. A construction method of a reinforced bus duct according to claim 1, wherein between the steps S4 and S5, a support plate (22) is installed on the tool type hanger, and then the bus duct is installed on the support plate (22), wherein the support plate (22) comprises an upper plate and a lower plate which are parallel to each other, and a rib plate is arranged between the upper plate and the lower plate, and is vertical to the upper plate and the lower plate.

3. The construction method of the reinforced bus duct according to claim 1, wherein the bus duct in the step S1 comprises a first cover plate (1), a second cover plate (2), a first side plate (3), a second side plate (4), a first bottom plate (7) and a second bottom plate (9), the first side plate (3) and the second side plate (4) are symmetrically arranged, the upper end and the lower end of the first side plate (3) are fixedly connected with the first cover plate (1) and the first bottom plate respectively, the upper end and the lower end of the second side plate (4) are fixedly connected with the second cover plate (5) and the second bottom plate (9) respectively, the first cover plate (1) is slidably connected with the second cover plate (2), and the first bottom plate (7) is slidably connected with the second bottom plate (9).

4. The construction method of the reinforced bus duct according to claim 3, wherein a plurality of first reinforcing ribs (5) are arranged on the first cover plate (1), the second cover plate (2), the first bottom plate (7) and the second bottom plate (9) along the length direction, and a plurality of second reinforcing ribs (6) are arranged on the first side plate (3) and the second side plate (4) along the length direction.

5. A construction method of a reinforced bus duct according to claim 3, wherein a first bolt (13) is connected to the first cover plate (1), a strip-shaped hole (8) is formed in the second cover plate (2), the first bolt (13) is connected to the strip-shaped hole (8), a first bolt (13) is connected to the first bottom plate (7), a strip-shaped hole (8) is formed in the second bottom plate (9), and the first bolt (13) is connected to the strip-shaped hole (8).

6. A construction method of a reinforced bus duct according to claim 3, wherein a sealing ring (16) is arranged between the first bolt (13) and the first cover plate (1).

7. The construction method of the reinforced bus duct according to claim 3, wherein the first cover plate (1), the second cover plate (2), the first bottom plate (7) and the second bottom plate (9) are all provided with wing plates (10), the wing plates (10) are provided with protrusions (11), the first side plate (3) and the second side plate (4) are both provided with grooves, the grooves are matched with the protrusions (11) in size, the wing plates (11) are connected with the first side plate (3) and the second side plate (4) through second bolts (14), and sealing strips (15) are arranged in the grooves.

8. The construction method of the reinforced bus duct according to claim 1, wherein the tool type hanger in step S1 comprises two first vertical columns (17), each first vertical column (17) is connected with a screw (18), the screw (18) is provided with a connecting block (23) and a first nut (24), the connecting block (23) is located above the first nut (24), the connecting block (23) is connected with a second vertical column (19), and a cross beam (21) is arranged between the two second vertical columns (19).

9. A construction method of a reinforced bus duct according to claim 8, wherein a first sliding groove is arranged on the beam (21), two limiting blocks (20) are arranged on the first sliding groove, and the limiting blocks (20) slide in the first sliding groove and are fixed through bolts.

10. A construction method of a reinforced bus duct according to claim 8, wherein a second sliding groove is formed in the second upright column (19) along the length direction, the cross beam (21) is connected with the second sliding groove in a sliding mode, and second nuts (25) are arranged at two ends of the cross beam (21).