A steel-concrete prefabricated building and its construction method

Abstract

This application relates to the technical field of prefabricated buildings, and in particular to a steel-concrete prefabricated building and its construction method. The building includes two prefabricated body components spaced apart, with a steel section installed between the two components. An mounting plate is located on the side of each prefabricated body component closest to the steel section. A support base is mounted on the mounting plate, and guide plates are located on both sides of the support base, with the guide plates positioned on the side of the support base closest to the steel section. The guide plates on both sides of the support base are inclined away from the support base at their ends, moving away from the steel section. The end of the steel section is spaced apart from the mounting plate. A limiting component for pre-fixing the steel section onto the support base is provided on the support base. Fixing bolts are also provided on the support base, passing sequentially through the steel section and the support base, and are secured to the steel section with nuts. This application improves construction efficiency.

Description

Technical Field

[0001] This application relates to the technical field of prefabricated buildings, and in particular to a steel-concrete prefabricated building and its construction method. Background Technology

[0002] Steel-concrete composite structures refer to structures that combine steel profiles and concrete. Steel-concrete prefabricated buildings refer to structures primarily composed of precast reinforced concrete components produced in factories, which are then connected to the steel structure during assembly. These buildings are formed by assembling, connecting, and pouring concrete onto the construction site using precast components.

[0003] The relevant technology regarding the structure of prefabricated steel-concrete buildings includes prefabricated body, with multiple prefabricated body sets. A steel plate is fitted onto the prefabricated body, and an I-beam is set on the steel plate. Steel beams are set on the side of the prefabricated body, and the steel beams are installed between two adjacent prefabricated body sets. The ends of the steel beams and the I-beams are fixedly connected by bolts.

[0004] In the aforementioned technologies, during installation, the ends of the steel beam and the I-beam need to be aligned before bolts are used for fixing. However, during installation, it is inconvenient to align both ends of the steel beam and the I-beam simultaneously, and the position of the steel beam is prone to shift when installing bolts, affecting construction efficiency. Summary of the Invention

[0005] To improve construction efficiency, this application provides a steel-concrete prefabricated building and its construction method.

[0006] Firstly, this application provides a steel-concrete prefabricated building.

[0007] The following technical solution is adopted:

[0008] A prefabricated steel-concrete composite building includes two prefabricated body parts spaced apart. A steel section is installed between the two prefabricated body parts. An installation plate is provided on the side of each prefabricated body part near the steel section. A support base is provided on the installation plate. Guide plates are provided on both sides of the support base. The guide plates are located on the side of the support base near the steel section. The ends of the guide plates on both sides of the support base are inclined away from the support base in a direction away from the steel section. The ends of the steel section are spaced apart from the installation plate. A limiting component for pre-fixing the steel section on the support base is provided. A fixing bolt is provided on the support base. The fixing bolt passes through the steel section and the support base in sequence and is fixed to the steel section with a nut.

[0009] By adopting the above technical solution, when installing the steel profile, the distance between the two precast components is set to be greater than the length of the steel profile, so that the steel profile can be placed between the two precast components, and the ends of the steel profile and the precast components are placed correspondingly. At the same time, guide rods are set to guide the steel profile to be placed on the support base. Meanwhile, the position of the steel profile is restricted by the limiting component to reduce the phenomenon of the steel profile detaching from the support base, so as to adjust the position of the steel profile. Finally, it is fixed with fixing bolts, thereby improving the installation efficiency.

[0010] Optionally, the limiting assembly includes a sleeve plate and a limiting plate. The sleeve plate is disposed outside the support base and the guide plate. The sleeve plate is slidably disposed on the support base in the direction of the length of the steel section. The sleeve plate has an opening for the steel section to pass through. The limiting plate is rotatably disposed on the side of the support base near the guide plate. The limiting plate is disposed between the support base and the sleeve plate. The side of the limiting plate near the steel section abuts against the steel section to restrict the steel section on the support base.

[0011] By adopting the above technical solution, after placing the steel profile on the support base, the limiting plate is rotated until it abuts against the steel profile, and then the position of the sleeve plate is moved to the outside of the limiting plate. This reduces the possibility of the limiting plate rotating away from the steel profile. When adjusting the position of the steel profile, the position of the steel profile is restricted, preventing the steel profile and the support base from separating or shifting, thus improving installation efficiency.

[0012] Optionally, the sleeve plate is provided with an abutment bolt, which is threadedly connected to the sleeve plate, and the end of the abutment bolt abuts against the side of the limiting plate away from the steel section.

[0013] By adopting the above technical solution, after the steel section is moved to the designated position, the end of the abutting bolt and the limiting plate abut against each other, thereby fixing the position of the steel section and further improving its stability.

[0014] Optionally, a groove is provided on the side of the support base near the mounting plate, and a top block is slidably disposed in the groove. The top block corresponds to the gap between the steel section and the mounting plate. A guide slope is provided on the edge of the top block near the steel section. The top block slides along the gap between the steel section and the mounting plate, and abuts against the steel section through the guide slope to adjust the position of the steel section. A push bolt is threaded on the side of the support base away from the steel section. The end of the push bolt extends through the support base into the groove. The end of the push bolt abuts against the top block to adjust the position of the top block.

[0015] By adopting the above technical solution, when it is necessary to adjust the position of the steel section, the push bolt is rotated, the end of the push bolt is pushed to abut against the top block, and the top block is moved. After the top block abuts against the steel section through the guide slope, it continues to move, driving the steel section to move and adjusting the steel section to the designated position, thereby improving installation efficiency.

[0016] Optionally, a roller is rotatably mounted on the support base, the rotation axis of the roller is arranged perpendicular to the length direction of the steel section, and the side of the steel section closest to the support base abuts against the roller.

[0017] By adopting the above technical solution, the steel profile is placed on the support seat by rollers. When the steel profile moves, the rollers rotate, which reduces the friction between the steel profile and the support seat, so as to adjust the steel profile to the designated position.

[0018] Optionally, a slot is provided on the side of the steel section near the support seat, and the roller is engaged in the slot.

[0019] By adopting the above technical solution, after the steel section moves to the designated position, the roller and the slot engage, and then the steel section is fixed by the fixing bolts, so that the steel section remains in contact with the support seat. The engagement of the roller and the slot can further limit the lateral displacement of the steel section relative to the support seat and improve the overall stability.

[0020] Optionally, the rotation axes of the sleeve plate and the limiting plate are spaced apart in the vertical direction.

[0021] By adopting the above technical solution, when the steel section is placed on the roller and the roller and the slot are not engaged, the limiting plate can rotate to an inclined state towards the gap with the sleeve plate, and at this time it remains in contact with the steel section and is fixed by the sleeve plate. That is, even when the steel section and the roller are in contact, the position of the steel section can be restricted by the limiting plate to prevent the steel section from shifting.

[0022] Optionally, a baffle is provided on the side of the limiting plate opposite to the support seat. The baffle is provided on the side of the limiting plate opposite to the mounting seat, and the side of the baffle abuts against the side of the sleeve plate.

[0023] By adopting the above technical solution, a baffle is set, and the side of the sleeve plate abuts against the baffle, so that the sleeve plate can be quickly moved to a designated position to restrict the steel section.

[0024] Optionally, two limiting plates are provided, with the two limiting plates respectively located on both sides of the steel section. An auxiliary plate is provided on the limiting plate, and the auxiliary plate abuts against the steel section. An auxiliary bolt is provided on the auxiliary plate, and the auxiliary bolt passes through the auxiliary plate, the steel section, and another auxiliary plate in sequence, and is used with a nut to fix the auxiliary plate and the steel section together.

[0025] By adopting the above technical solution, an auxiliary plate is set to increase the contact area with the steel section, and auxiliary bolts are set to fix the auxiliary plate and the steel section together, thereby improving the overall stability of the steel section.

[0026] Secondly, this application provides a construction method for steel-concrete prefabricated buildings.

[0027] The following technical solution is adopted:

[0028] A construction method for a steel-concrete prefabricated building includes the following steps:

[0029] S1, the mounting plate is cast into the precast body through the connecting bar, and the two precast bodies are placed at intervals, with the distance between them being greater than the length of the steel to be installed.

[0030] S2, rotate the limiting plate until the side of the limiting plate abuts against the guide plate, and at the same time move the sleeve plate to the position where it abuts against the mounting plate;

[0031] S3, place the steel section onto the support base using the guide plate;

[0032] S4, rotate the limiting plate until it abuts against the edge of the steel section, and then move the sleeve plate to the outside of the limiting plate;

[0033] S5, rotate the push bolt, push the bolt to drive the top block to move, the top block is adjusted by the guide slope to the position of the steel section until the steel section moves to the position corresponding to the slot and the roller, and at the same time the side of the top block abuts against the steel section;

[0034] S6, the limit plate rotates to contact the steel section, and at the same time the auxiliary plate abuts against the steel section;

[0035] S7. Install the fixing bolts, abutment bolts, and auxiliary bolts in the designated positions and mate them with nuts to complete the installation of the steel profile.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. During installation, place the steel profile on the support base and restrict its position using a limiting plate to reduce the possibility of the steel profile detaching from the support base. This also allows the steel profile to move on the support base and be fixed in the designated position, improving installation efficiency. Attached Figure Description

[0038] Figure 1 This is a structural schematic diagram of a steel-concrete prefabricated building according to an embodiment of this application.

[0039] Figure 2 This is a partial view of a steel-concrete prefabricated building according to an embodiment of this application.

[0040] Figure 3 This is a structural view of the top block in a steel-concrete prefabricated building according to an embodiment of this application.

[0041] Figure 4 This is a structural view of the limiting component in a steel-concrete prefabricated building according to an embodiment of this application.

[0042] Figure 5 This is a structural view of the auxiliary panel in the steel-concrete prefabricated building according to an embodiment of this application.

[0043] Figure 6 This is a structural view of the abutting bolt in a steel-concrete prefabricated building according to an embodiment of this application.

[0044] Figure 7 This is a structural view of the roller in the steel-concrete prefabricated building according to an embodiment of this application.

[0045] Reference numerals: 1. Precast component body; 2. Steel section; 21. Slot; 3. Mounting plate; 31. Connecting rib; 4. Support base; 41. Fixing bolt; 42. Slide groove; 5. Guide plate; 6. Limiting assembly; 61. Limiting plate; 62. Sleeve plate; 621. Opening; 622. Abutment bolt; 623. Auxiliary plate; 624. Auxiliary bolt; 7. Top block; 71. Guide ramp; 72. Push bolt; 8. Roller; 9. Baffle. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0047] This application discloses a steel-concrete prefabricated building.

[0048] Reference Figure 1 and Figure 2 The precast steel-concrete structure includes a precast body 1, of which there are two. A steel section 2 is placed between the two precast bodies 1. An installation plate 3 is provided on the side of the precast body 1. A connecting rib 31 is provided on the side of the installation plate 3 near the precast body 1. Multiple connecting ribs 31 are provided and are evenly spaced on the installation plate 3. The connecting ribs 31 are connected to the steel bars in the precast body 1. The connecting ribs 31 and the steel bars are cast together in the precast body 1. A support seat 4 is provided on the installation plate 3. The support seat 4 is located on the side of the installation plate 3 near the other precast body 1. The end of the steel section 2 is placed on the support seat 4. Fixing bolts 41 are passed through the steel section 2 and the support seat 4. The steel section 2 is installed between the two precast bodies 1 by fixing bolts 41.

[0049] Reference Figure 2 and Figure 3 Guide plates 5 are provided on both sides of the support base 4. The guide plates 5 are located on the side of the support base 4 closest to the steel section 2, and the end of the guide plates 5 away from the support base 4 is inclined in a direction away from each other, so that the steel section 2 can be placed on the support base 4 through the guide plates 5. Then, the steel section 2 is fixed with fixing bolts 41.

[0050] Reference Figure 2 and Figure 3The length of the steel section 2 is set to be less than the distance between the two precast body 1s, meaning there is a gap between the end of the steel section 2 and the mounting plate 3. This allows the steel section 2 to be placed between the two precast body 1s and then onto the support base 4. After placement on the support base 4, the position of the steel section 2 can be adjusted and corrected to move it to the designated location. Simultaneously, a limiting component 6 is provided on the support base 4 to pre-fix the steel section 2, reducing the possibility of the steel section 2 detaching from the support base 4 during position adjustment, thus improving installation safety.

[0051] Reference Figure 4 and Figure 5 The limiting component 6 includes a sleeve plate 62 and a limiting plate 61. The sleeve plate 62 is sleeved on the outside of the support base 4 and the guide plate 5. The inner side of the sleeve plate 62 abuts against the side of the support base 4 away from the steel section 2 and the side of the guide plate 5 away from the steel section 2. The sleeve plate 62 is slidably arranged on the support base 4 along the length direction of the steel section 2. An opening 621 for the steel section 2 to pass through is provided on the sleeve plate 62. The limiting plate 61 is rotatably arranged on the support base 4. The limiting plate 61 is arranged on the side of the support base 4 near the guide plate 5 and on the side of the guide plate 5 near the steel section 2. The limiting plate 61 is arranged between the support base 4 and the sleeve plate 62. The side of the limiting plate 61 near the steel section 2 abuts against the steel section 2. When installing the steel section 2, rotate the support base 4 to the unfolded state, then place the steel section 2 on the support base 4, and put the sleeve plate 62 on the support base 4. At the same time, move it to the outside of the limiting plate 61 to restrict the position of the limiting plate 61, so that the limiting plate 61 remains in contact with the steel section 2. By restricting the position of the steel section 2 through the limiting plate 61, the pre-fixing effect is achieved.

[0052] Reference Figure 4 and Figure 5 An abutment bolt 622 is provided on the sleeve plate 62. The abutment bolt 622 passes through the sleeve plate 62 and abuts against the limiting plate 61. The abutment bolt 622 and the sleeve plate 62 are threadedly connected. After the steel section 2 is moved to the designated position, the abutment bolt 622 is rotated until it abuts against the side of the limiting plate 61 away from the support base 4, thereby fixing the steel section 2.

[0053] Reference Figure 4 and Figure 5An auxiliary plate 623 is provided on the limiting plate 61. The auxiliary plate 623 is located on the side of the limiting plate 61 opposite to its rotating end and is perpendicular to the limiting plate 61. When the limiting plate 61 and the steel section 2 abut, the auxiliary plate 623 abuts against the steel section 2. There are two limiting plates 61, which are respectively located on both sides of the steel section 2. Auxiliary bolts 624 are passed through the auxiliary plate 623 and the steel section 2. The auxiliary bolts 624 pass through the auxiliary plate 623, the steel section 2, and another auxiliary plate 623 in sequence. The auxiliary plate 623 and the steel section 2 are fixedly connected by the auxiliary bolts 624 and nuts, thereby improving the stability of the steel section 2.

[0054] Reference Figure 2 and Figure 3 To facilitate the movement of the steel profile 2 to a designated position, a groove 42 is provided on the support base 4 near the mounting plate 3. The groove 42 is located on the side of the support base 4 facing away from the ground. A top block 7 is slidably installed in the groove 42 in a vertical direction. The top block 7 is located in the gap between the steel profile 2 and the mounting plate 3. A push bolt 72 is threadedly fitted on the side of the support base 4 near the ground. The end of the push bolt 72 extends through the support base 4 into the groove 42, and the end of the push bolt 72 abuts against the side of the top block 7. A guide ramp 71 is provided near the edge of the steel section 2. When the top block 7 moves in the direction away from the ground, the guide ramp 71 abuts against the edge of the steel section 2. As the top block 7 continues to move, the guide ramp 71 drives the steel section 2 to slide away from the mounting plate 3, thereby adjusting and correcting the position of the steel section 2 until the guide ramp 71 and the steel section 2 separate, that is, the side of the top block 7 abuts against the end of the steel section 2, moving the steel section 2 to the designated position. At the same time, the position of the top block 7 is fixed by the push bolt. Top blocks 7 are provided on the support seats 4 at both ends of the steel section 2. By adjusting the position of the top blocks 7, the steel section 2 can be adjusted to the designated position.

[0055] Reference Figure 5 and Figure 6 In order to facilitate the adjustment of the position of the steel section 2, a roller 8 is rotatably installed on the support base 4. The rotation axis of the roller 8 is set along the length direction perpendicular to the steel section 2. The side of the steel section 2 closest to the support base 4 abuts against the roller 8, so as to reduce the friction between the steel section 2 and the support base 4 through the roller 8 and adjust the position of the steel section 2.

[0056] Reference Figure 6 and Figure 7 A slot 21 is provided on the side of the steel section 2 near the support base 4. The side of the roller 8 is locked in the slot 21, and the side of the roller 8 abuts against the inner wall of the slot. After the steel section 2 moves to the designated position, the roller 8 and the slot 21 are engaged, further improving the stability of the steel section 2.

[0057] Reference Figure 6 and Figure 7 When the steel section 2 is placed on the roller 8, since the steel section 2 is not fully in contact with the support base 4, the side of the limiting plate 61 cannot contact the steel section 2 when it rotates to the position of the steel section 2; the limiting plate 61 and the edge of the steel section 2 do not contact each other. The rotation axes of the sleeve plate 62 and the limiting plate 61 are spaced apart in the vertical direction, that is, when the steel section 2 is fully moved to the designated position and the limiting plate 61 and the steel section 2 are in contact, the sleeve plate 62 and the limiting plate 61 are spaced apart. When the roller 8 is not engaged with the slot 21, the sleeve can be moved to the outside of the limiting plate 61, and the steel section 2 is pre-fixed by the limiting plate 61.

[0058] Reference Figure 4 and Figure 5 A baffle 9 is provided on the side of the limiting plate 61 opposite to the support base 4. The baffle 9 is located on the side of the limiting plate 61 opposite to the mounting base, and the side of the baffle 9 abuts against the side of the sleeve plate 62. The width of the sleeve plate 62 is smaller than the gap between the end of the steel section 2 and the mounting plate 3. This allows the sleeve plate 62 to be moved to the designated position by abutting the side of the sleeve plate 62 against the baffle 9 when it is moved, thus improving installation efficiency.

[0059] The implementation principle of this application is as follows: the steel profile 2 is placed on the support base 4, and the limiting plate 61 is rotated and the moving sleeve 62 is moved to the outside of the limiting plate 61 to restrict the position of the steel profile 2. Then the steel profile 2 is adjusted to the designated position. The steel profile 2 is pre-fixed on the support base 4 by setting the limiting plate 61 to reduce the phenomenon of steel profile 2 shifting. After moving to the designated position, the steel profile 2 is fixed on the support base 4 by fixing bolts 41 to improve the installation efficiency.

[0060] This application also discloses a construction method for a steel-concrete prefabricated building, which adopts the above-mentioned steel-concrete prefabricated building.

[0061] A construction method for a steel-concrete prefabricated building includes the following steps:

[0062] S1, the mounting plate 3 is cast into the precast body 1 through the connecting rib 31, and the two precast bodies 1 are placed at intervals, with the distance between them being greater than the length of the steel section 2 to be installed.

[0063] S2, rotate the limiting plate 61 until the side of the limiting plate 61 abuts against the guide plate 5, and at the same time move the sleeve plate 62 to the position where it abuts against the mounting plate 3;

[0064] S3, place the steel section 2 on the support base 4 through the guide plate 5;

[0065] S4, rotate the limiting plate 61 until it abuts against the edge of the steel section 2, and then move the sleeve plate 62 to the outside of the limiting plate 61;

[0066] S5, rotate the push bolt 72, push the bolt 72 to drive the top block 7 to move, the top block 7 adjusts the position of the steel section 2 through the guide inclined surface 71 until the steel section 2 moves to the position corresponding to the slot 21 and the roller 8, and at the same time the side of the top block 7 abuts against the steel section 2;

[0067] S6, the limiting plate 61 rotates to make contact with the steel section 2, and at the same time the auxiliary plate 623 abuts against the steel section 2;

[0068] S7. Install the fixing bolt 41, the abutment bolt 622 and the auxiliary bolt 624 in the designated positions and mate them with the nuts to complete the installation of the steel section 2.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated steel-concrete structure, comprising two prefabricated body parts (1) spaced apart, with steel sections (2) installed between the two prefabricated body parts (1), characterized in that: The precast body (1) is provided with an installation plate (3) on the side near the steel section (2). A support base (4) is provided on the installation plate (3). Guide plates (5) are provided on both sides of the support base (4). The guide plates (5) are provided on the side of the support base (4) near the steel section (2). The guide plates (5) on both sides of the support base (4) are inclined away from the support base (4) in the direction away from the steel section (2). The end of the steel section (2) and the installation plate (3) are spaced apart. A limiting component (6) for pre-fixing the steel section (2) on the support base (4) is provided. A fixing bolt (41) is provided on the support base (4). The fixing bolt (41) passes through the steel section (2) and the support base (4) in sequence and is used with a nut to fix the steel section (2). The limiting component (6) includes a sleeve plate (62) and a limiting plate (61). The sleeve plate (62) is disposed outside the support base (4) and the guide plate (5). The sleeve plate (62) is slidably disposed on the support base (4) in the direction of the length of the steel section (2). The sleeve plate (62) has an opening (621) for the steel section (2) to pass through. The limiting plate (61) is rotatably disposed on the side of the support base (4) near the guide plate (5). The limiting plate (61) is disposed between the support base (4) and the sleeve plate (62). The side of the limiting plate (61) near the steel section (2) abuts against the steel section (2) to limit the steel section (2) on the support base (4). A groove (42) is provided on the side of the support base (4) near the mounting plate (3). A top block (7) is slidably arranged in the groove (42). The top block (7) corresponds to the gap between the steel section (2) and the mounting plate (3). A guide slope (71) is provided on the edge of the top block (7) near the steel section (2). The top block (7) slides along the gap between the steel section (2) and the mounting plate (3), passes through the guide slope (71), and abuts against the steel section (2) to adjust the position of the steel section (2). A push bolt (72) is threaded on the side of the support base (4) away from the steel section (2). The end of the push bolt (72) extends through the support base (4) into the groove (42). The end of the push bolt (72) abuts against the top block (7) to adjust the position of the top block (7).

2. The prefabricated steel-concrete structure according to claim 1, characterized in that: The sleeve plate (62) is provided with an abutment bolt (622), the abutment bolt (622) and the sleeve plate (62) are threadedly connected, and the end of the abutment bolt (622) abuts against the side of the limiting plate (61) away from the steel section (2).

3. The prefabricated steel-concrete structure according to claim 2, characterized in that: A roller (8) is rotatably mounted on the support base (4). The rotation axis of the roller (8) is arranged along the length direction perpendicular to the section steel (2). The side of the section steel (2) closest to the support base (4) abuts against the roller (8).

4. The prefabricated steel-concrete structure according to claim 3, characterized in that: A slot (21) is provided on the side of the steel section (2) near the support base (4), and the roller (8) is engaged in the slot (21).

5. The prefabricated steel-concrete structure according to claim 4, characterized in that: The rotation axes of the sleeve plate (62) and the limiting plate (61) are spaced apart in the vertical direction.

6. The prefabricated steel-concrete structure according to claim 5, characterized in that: A baffle (9) is provided on the side of the limiting plate (61) away from the support base (4). The baffle (9) is provided on the side of the limiting plate (61) away from the mounting base. The side of the baffle (9) abuts against the side of the sleeve plate (62).

7. The prefabricated steel-concrete structure according to claim 6, characterized in that: Two limiting plates (61) are provided, and the two limiting plates (61) are respectively provided on both sides of the steel section (2). An auxiliary plate (623) is provided on the limiting plate (61). The auxiliary plate (623) abuts against the steel section (2). An auxiliary bolt (624) is provided on the auxiliary plate (623). The auxiliary bolt (624) passes through the auxiliary plate (623), the steel section (2) and the other auxiliary plate (623) in sequence, and is fixedly connected to the auxiliary plate (623) and the steel section (2) with a nut.

8. A construction method for a steel-concrete prefabricated building, employing the steel-concrete prefabricated building method as described in claim 7, characterized in that, Includes the following steps: S1, the mounting plate (3) is cast into the precast body (1) through the connecting bar (31), and the two precast bodies (1) are placed at intervals, and the distance between them is greater than the length of the steel section (2) to be installed; S2, rotate the limiting plate (61) until the side of the limiting plate (61) abuts against the guide plate (5), and at the same time move the sleeve plate (62) to the position where it abuts against the mounting plate (3); S3, place the steel section (2) on the support base (4) through the guide plate (5); S4, rotate the limiting plate (61) until it abuts against the edge of the steel section (2), and then move the sleeve plate (62) to the outside of the limiting plate (61); S5, rotate the push bolt (72), push the bolt (72) to drive the top block (7) to move, the top block (7) adjusts the position of the steel section (2) through the guide slope (71) until the steel section (2) moves to the position corresponding to the slot (21) and the roller (8), and at the same time the side of the top block (7) abuts against the steel section (2); S6, the limiting plate (61) rotates to contact the steel section (2), and at the same time the auxiliary plate (623) abuts against the steel section (2); S7, install the fixing bolt (41), the abutment bolt (622) and the auxiliary bolt (624) in the designated positions and mate them with the nuts to complete the installation of the steel section (2).

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