Steel structure purlin quick installation structure and installation method

Abstract

The application relates to the field of steel structure installation, in particular to a steel structure purlin quick installation structure and a method, which comprises a plurality of mounting seats welded on steel beams, a connecting plate is fixedly installed on one end of the mounting seat away from the steel beam, a purlin is fixedly installed on the connecting plate, and the area of the side of the connecting plate away from the steel beam is larger than the area of the side of the mounting seat away from the steel beam. The application has the effect of improving the installation strength of the purlin.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel structure installation, in particular to a steel structure purlin quick installation structure and a method. BACKGROUND

[0002] A purlin is also called a purline, a purline, a horizontal roof beam perpendicular to a roof truss or a rafter, used to support the rafter or the roof material, the purlin is a transverse bending (usually double bending) component, and is generally designed as a single-span simply supported purlin.

[0003] At present, a plurality of installation seats need to be welded on a steel beam before the purlin is installed, and the corresponding installation seats are directly welded on the I-shaped steel beam according to the needs during the production of the steel beam, and the installation seats are arranged at intervals along the length direction of the steel beam, and the installation seats are arranged as 3*4 square steels, and the purlin is also arranged as 3*4 square steels, after the steel structure installation is completed, the purlin is directly hoisted, the position of the purlin is moved during hoisting, so that the two ends of the purlin abut against the installation seats, and finally the purlin is fixed on the installation seat by manual welding.

[0004] In the related technology, since the width of the installation seat is the same as that of the purlin, and the purlin is fixed on the installation seat by manual welding, errors are prone to occur, the purlin and the installation seat are arranged in a dislocation mode, the bottom surface of the purlin cannot completely abut against the end surface of the installation seat, and then the connection strength of the purlin and the installation seat is not high; in addition, during welding, since the steel beam is arranged in an inclined mode, in order to prevent the purlin from sliding, the worker needs to limit the position of the purlin and weld at the same time, and then the purlin is inconvenient to install and fix. SUMMARY

[0005] In order to improve the installation strength of the purlin, the application provides a steel structure purlin quick installation structure and a method.

[0006] First aspect

[0007] The steel structure purlin quick installation structure provided by the application adopts the following technical scheme:

[0008] A steel structure purlin quick installation structure, comprising a plurality of installation seats welded on a steel beam, a connecting plate is fixedly installed at one end of the installation seat away from the steel beam, a purlin is fixedly installed on the connecting plate, and the area of the connecting plate away from the steel beam is greater than the area of the installation seat away from the steel beam.

[0009] By adopting the technical scheme, multiple mounting seats are directly welded on the steel beam according to requirements when the steel beam is produced, the multiple mounting seats are arranged at intervals, the mounting seat and the steel beam are arranged vertically, then a connecting plate is welded on an end surface of each mounting seat away from the steel beam, the connecting plate and the steel beam are arranged in parallel, meanwhile, the surface of the connecting plate away from the steel beam is larger than the area of the end surface of the mounting seat, and then when the purlin is installed and fixed, even if an error occurs in manual welding, the surface of the purlin can still be completely welded on the mounting plate, meanwhile, the contact area of the purlin is increased, and the connection strength of the purlin and the mounting seat is improved.

[0010] Optionally, the connecting plate is fixedly provided with an abutting plate, the abutting plate and the connecting plate are arranged at an angle, the purlin arranged on the connecting plate abuts against the abutting plate, and the abutting plate is used for limiting the purlin.

[0011] By adopting the technical scheme, when the installed steel beam needs to be arranged obliquely, the steel beam forms a highest point and a lowest point, after installation is completed, water at the highest point flows to the lowest point, meanwhile, the abutting plate is arranged on the side of the connecting plate away from the highest point of the steel beam, and when the purlin is installed, the purlin can abut against the abutting plate under the action of gravity, on one hand, the abutting plate plays a limiting role, and it is convenient to weld the purlin on the connecting plate, on the other hand, the other side surface of the purlin can be welded on the abutting plate, and the installation strength of the purlin is improved.

[0012] Optionally, a limiting plate is welded on the connecting plate, and the limiting plate is used for abutting against the end surface of the purlin.

[0013] By adopting the technical scheme, under the action of the abutting plate, when the purlin is installed, the two end surfaces of the purlin can directly abut against the limiting plate, and thus the purlin can be installed more conveniently.

[0014] Optionally, the limiting plate is provided with a reinforcing assembly for further fixing the purlin arranged on the connecting plate; the reinforcing assembly comprises a rotating shaft rotatably connected to the limiting plate and a reinforcing plate fixed to the rotating shaft, and the reinforcing plate is used for abutting against the inner bottom wall of the purlin.

[0015] By adopting the technical scheme, when the purlin simultaneously abuts against the connecting plate and the abutting plate, the rotating shaft is rotated, the rotating shaft drives the reinforcing plate to rotate, the reinforcing plate is rotated from the opening of the end surface of the purlin to the inside of the purlin, and the reinforcing plate abuts against the inner bottom wall of the purlin, on one hand, the purlin is fixed to the connecting plate, and it is convenient to weld the purlin, on the other hand, the purlin can be further fixed, and the connection strength of the purlin and the connecting plate is improved.

[0016] Optionally, the rotating shaft is provided with two reinforcing plates, the two reinforcing plates are used for simultaneously fixing two purlins arranged on the connecting plate, and the abutting plate is provided with a control member for pushing the reinforcing plate to move.

[0017] By adopting the technical scheme, since the two adjacent purlins need to be fixed on the connecting plate, and the end faces of the two purlins abut on opposite sides of the limiting plate, the rotating shaft is driven to rotate by the control member, the two reinforcing plates are simultaneously driven to rotate by the rotating shaft, the reinforcing plates are rotated to be parallel to the steel beam, then the control member simultaneously abuts the two reinforcing plates on the inner bottom walls of the two purlins, and the fixing purpose of the two adjacent purlins is achieved.

[0018] Optionally, the control member is a control plate fixed on the rotating shaft, a rotating groove for the rotation of the control plate is formed in the limiting plate, and a sliding groove for accommodating the control plate is formed in the bottom wall of the rotating groove in the limiting plate; the control plate comprises two symmetrically arranged long edges and two symmetrically arranged short edges; when the reinforcing plates are perpendicular to the steel beam, the long edges of the control plate abut on the inner bottom wall of the rotating groove; when the reinforcing plates are parallel to the steel beam, the short edges of the control plate correspond to the sliding groove, the control plate moves into the sliding groove under the action of gravity, and the short edges of the control plate abut on the bottom wall of the sliding groove, at this time, the reinforcing plates rotate into the purlins and abut on the inner bottom walls of the purlins.

[0019] By adopting the technical scheme, when the two adjacent purlins are installed, the control plate is rotated, the rotating shaft and the reinforcing plates arranged on the rotating shaft are rotated by the control plate, the long edges of the control plate no longer abut on the bottom wall of the rotating groove, when the control plate is rotated by 90 degrees, the reinforcing plates are arranged parallel to the steel beam, at this time, the short edges of the control plate correspond to the sliding groove, then the control plate moves along the length direction of the sliding groove under the action of gravity, the control plate drives the reinforcing plates to move towards the inner bottom walls of the purlins when the control plate moves, and the reinforcing plates abut on the inner bottom walls of the purlins, so that the reinforcing plates are adjusted more conveniently.

[0020] Optionally, a moving block is slidably connected to the limiting plate, the moving block slides on the limiting plate along the length direction of the sliding groove, the rotating shaft is arranged through the moving block and is rotatably connected to the moving block, and a pushing spring for pushing the moving block to move towards the bottom wall of the sliding groove is fixedly arranged on the abutment plate.

[0021] By adopting the technical scheme, when the reinforcing plates are perpendicular to the steel beam, the reinforcing plates and the abutment plate are parallel at this time, the pushing spring is in a compressed state at this time, the pushing spring pushes the control plate to abut on the bottom wall of the rotating groove, then when the purlins need to be fixed, the control plate is rotated by 90 degrees at this time, the short edges of the control plate correspond to the sliding groove, the pushing spring pushes the moving block and the control plate to move along the length direction of the sliding groove, on the one hand, the reinforcing plates move faster, and on the other hand, the reinforcing plates can be more firmly abut on the inner bottom walls of the purlins.

[0022] Optionally, the control plate is fixedly installed with an adjusting shaft, the adjusting shaft is rotationally connected to the limiting plate, and an end of the adjusting shaft away from the control plate extends out of the limiting plate.

[0023] By adopting the above technical scheme, under the action of the control shaft, the control plate is driven to rotate, so that the use is more convenient.

[0024] Optionally, the two ends of the rotating shaft are fixedly connected with control plates.

[0025] By adopting the above technical scheme, under the action of the two control plates, when the reinforcing plate is rotated, the movement of the reinforcing plate is more stable.

[0026] The second aspect

[0027] A mounting method of a steel structure purlin comprises the following steps: S1: hoisting the purlin above the steel beam by a crane, then adjusting the position of the purlin, so that the end face of the purlin abuts against the limiting plate, and the side face abuts against the abutting plate; S2: rotating the adjusting shaft, the adjusting shaft drives the control plate to rotate, when the control plate rotates by 90 degrees, the short side of the control plate corresponds to the sliding groove, then the spring pushes the moving block and the control plate to move in the sliding groove. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic view of the overall structure of the embodiment one of the present application.

[0029] Figure 2 is a limiting plate connection schematic view of the embodiment two of the present application.

[0030] Figure 3 is a fixed assembly structure schematic view of the embodiment two of the present application.

[0031] Figure 4 is a limiting plate sectional view of the embodiment two of the present application.

[0032] Figure 5 is a structure schematic view of the reinforcing plate after the rotation is completed in the embodiment two of the present application.

[0033] Figure 6 is a structure schematic view of the reinforcing plate abutting against the inner bottom wall of the purlin in the embodiment two of the present application.

[0034] : 1, steel beam; 11, mounting seat; 12, connecting plate; 13, abutting plate; 14, purlin; 2, limiting plate; 21, accommodation groove; 22, short side; 23, long side; 24, rotating groove; 25, sliding groove; 3, reinforcing assembly; 31, reinforcing plate; 32, rotating shaft; 4, control piece; 41, control plate; 5, first abutting surface; 51, second abutting surface; 52, A surface; 53, B surface; 6, supporting plate; 61, adjusting shaft; 62, moving block; 7, moving groove; 71, pushing spring. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The application is further described in detail.

[0036] First aspect

[0037] Embodiment one

[0038] The embodiment of the application discloses a steel structure purlin quick mounting structure. Figure 1 The steel structure purlin 14 quick mounting structure comprises a mounting seat 11 arranged on a steel beam 1, the steel beam 1 is arranged to be inclined downward, so that the steel beam 1 can form a highest point and a lowest point, and the steel tile arranged on the steel beam 1 is also arranged to be high at one end and low at the other end, thereby facilitating the drainage of the steel tile arranged on the steel beam 1, in addition, in the embodiment, the steel beam 1 is arranged to be an I-shaped steel, the mounting seat 11 is arranged to be a square steel with openings arranged at both ends, and the purlin 14 is also arranged to be a square steel with openings arranged at both ends.

[0039] Referring to Figure 1 The mounting seat 11 is directly welded on the steel beam 1 and arranged perpendicularly to the steel beam 1, is arranged to be uniformly spaced along the length direction of the steel beam 1, and is welded on the steel beam 1 according to the number required after the production of the steel beam 1, and the connecting plate 12 is arranged on the mounting seat 11, in the embodiment, when the mounting seat 11 is welded, the connecting plate 12 is also fixed on the end face of the mounting seat 11 by welding, and the area of the side, away from the steel beam 1, of the mounting seat 11 is smaller than the area of the side, away from the mounting seat 11, of the connecting plate 12; when the steel beam 1 is installed, the purlin 14 is directly welded on the connecting plate 12, and even if the purlin 14 and the mounting seat 11 are slightly misaligned, the purlin 14 can still be completely welded on the connecting plate 12 under the action of the connecting plate 12, thereby improving the connecting strength of the purlin 14.

[0040] Referring to Figure 1The abutting plate 13 is arranged on the connecting plate 12, and the abutting plate 13 is arranged on the side of the connecting plate 12 close to the lowest point of the steel beam 1. The abutting plate 13 and the connecting plate 12 are arranged at an angle. In the embodiment, the abutting plate 13 and the connecting plate 12 are vertically welded, so that the connecting plate 12 and the abutting plate 13 form an L-shaped structure. In other embodiments, the connecting plate 12 and the abutting plate 13 can be integrally formed by bending a steel plate. When the purlin 14 is installed, the crane hoists the purlin 14, and then the workers adjust the position of the purlin 14 so that the purlin 14 abuts against the connecting plate 12 and the abutting plate 13. Under the action of the abutting plate 13, the abutting plate 13 can limit the movement of the purlin 14 along the length direction of the steel beam 1, so that the purlin 14 is more convenient to weld. On the other hand, under the action of the abutting plate 13, the purlin 14 can be welded on the side of the abutting plate 13, so that the two adjacent sides of the purlin 14 are welded, and the installation strength of the purlin 14 is further improved.

[0041] The implementation principle of the steel structure purlin 14 quick installation structure in the embodiment is as follows: since the mounting seat 11, the connecting plate 12 and the abutting plate 13 are fixed before the steel beam 1 is installed, when the steel beam 1 is installed, the purlin 14 is hoisted by the crane and is above the steel beam 1. Then the workers adjust the position of the purlin 14 so that the purlin 14 abuts against the connecting plate 12 and the abutting plate 13. Finally, the purlin 14 is fixed by welding, and the two adjacent sides of the purlin 14 are welded on the connecting plate 12 and the abutting plate 13 respectively, so that the connection strength of the purlin 14 and the steel structure is further improved.

[0042] Embodiment two

[0043] The difference from the first embodiment is that the purlin 14 can be preliminarily fixed, so that the workers can weld the purlin 14 on the connecting plate 12 and the abutting plate 13.

[0044] Reference Figure 2 and Figure 3 The limiting plate 2 is welded on the connecting plate 12, and the limiting plate 2 is arranged perpendicularly to the connecting plate 12 and the abutting plate 13. Therefore, when the purlin 14 is installed, the two end surfaces of the purlin 14 can abut against the limiting plate 2, so that the position of the purlin 14 on the connecting plate 12 does not need to be adjusted manually, and the installation of the purlin 14 is more convenient. In the embodiment, the two adjacent sides of the limiting plate 2 are welded on the connecting plate 12 and the abutting plate 13 respectively, so that the connecting plate 12 and the abutting plate 13 are equally divided into two parts, and two purlins 14 can be installed on the connecting plate 12.

[0045] Reference Figure 2 and Figure 3The limiting plate 2 is provided with a limiting slot 21 penetrating through the limiting plate 2, so that the limiting plate 2 has an inverted U-shaped structure. The reinforcing assembly 3 is arranged on the limiting plate 2 and is arranged in the limiting slot 21. The reinforcing assembly 3 is used for preliminarily fixing the purline 14 during installation, so that the purline 14 is not moved during welding, and the purline 14 is more convenient to weld.

[0046] With reference to Figure 2 and Figure 3 The reinforcing assembly 3 comprises a reinforcing plate 31 and a rotating shaft 32. The rotating shaft 32 is provided with a control member 4. The control member 4 is used for driving the rotating shaft 32 to rotate. The reinforcing plate 31 is welded on the rotating shaft 32. The rotating shaft 32 drives the reinforcing plate 31 to rotate, so that the reinforcing plate 31 rotates from the opening of the purline 14 into the purline 14 and abuts against the inner bottom wall of the purline 14. Two reinforcing plates 31 are welded on the rotating shaft 32. The two reinforcing plates 31 form an integral rectangular plate. When the purline 14 is not installed, the two reinforcing plates 31 are arranged in the limiting slot 21. When the two adjacent purlines 14 on the connecting plate 12 are installed, the rotating shaft 32 is driven to rotate by the control member 4. The two reinforcing plates 31 are simultaneously driven to rotate by the rotating shaft 32. Then, the two reinforcing plates 31 abut against the inner bottom walls of the two adjacent purlines 14, respectively.

[0047] With reference to Figure 3 and Figure 4 The control member 4 is a control plate 41. The control plate 41 is a rectangular plate. The side surface of the control plate 41 comprises two symmetrically arranged short edges 22 and two symmetrically arranged long edges 23. In the embodiment, in order to distinguish the side surface of the control plate 41, the four side surfaces of the control plate 41 are defined. The surfaces where the two long edges 23 are located are abutting surfaces. The surfaces where the two short edges 22 are located are rotating surfaces. The two rotating surfaces are arranged at two ends of the control plate 41. The two abutting surfaces are arranged at two sides of the control plate 41. The area of the rotating surface is smaller than the area of the abutting surface.

[0048] With reference to Figure 3 and Figure 4A rotating groove 24 is formed on the limiting plate 2, the control plate 41 is rotatably connected in the rotating groove 24, and a sliding groove 25 is formed on the bottom wall of the rotating groove 24, the sliding groove 25 is formed along the direction perpendicular to the rotating shaft 32 axis, the sliding groove 25 is communicated with the rotating groove 24, the opening size of the sliding groove 25 is same with the area of the rotating surface, under the action of the sliding groove 25, the bottom wall of the rotating groove 24 is divided into two parts, in the embodiment, one part is defined as the first abutting surface 5, and the other part is defined as the second abutting surface 51, a supporting plate 6 is arranged on the bottom wall of the rotating groove 24, the supporting plate 6 is connected with the first abutting surface 5 on the rotating groove 24, the supporting plate 6 is used for abutting with the abutting surface on the control plate 41, under the action of the supporting plate 6, the position of the control plate 41 can be limited, so that the control plate 41 can only rotate 90 degrees.

[0049] With reference to Figure 4 and Figure 5 , in the initial state, the reinforcing plate 31 is in the giving-way groove 21, at this time, the abutting surface on the control plate 41 abuts on the side surface of the supporting plate 6, then when the adjacent two purline 14 are all installed on the connecting plate 12, the control plate 41 is rotated, the control plate 41 rotates in the rotating groove 24, the abutting surface on the control plate 41 no longer abuts on the side surface of the supporting plate 6, the rotating surface rotates towards the direction close to the sliding groove 25, when the sliding groove 25 corresponds to the rotating surface on the control plate 41, at this time, the abutting surface on the control plate 41 abuts on the end surface of the supporting plate 6, the control plate 41 cannot rotate, under the action of gravity, the control plate 41 drives the rotating shaft 32 and the reinforcing plate 31 to move along the length direction of the sliding groove 25, thereby facilitating the reinforcing plate 31 to abut on the bottom wall in the purline 14.

[0050] With reference to Figure 3 and Figure 4 , in order to facilitate the distinction of the two rotating surfaces on the control plate 41, in the embodiment, the two rotating surfaces are defined as A surface 52 and B surface 53, when the reinforcing plate 31 is in the giving-way groove 21, the A surface 52 is above the supporting plate 6, and the B surface 53 is above the second abutting surface 51, at this time, the distance between the axis of the rotating shaft 32 and the A surface 52 is greater than the distance between the axis of the rotating shaft 32 and the B surface 53, thereby facilitating the control plate 41 to stably abut on the side surface of the supporting plate 6 in the initial state, preventing the self-rotation of the control plate 41.

[0051] With reference to Figure 4 and Figure 5 , an adjusting shaft 61 is fixedly installed on the control plate 41, the adjusting shaft 61 is coaxially arranged with the rotating shaft 32, one end of the adjusting shaft 61 extends out of the limiting plate 2, and the adjusting shaft 61 rotates and slides on the limiting plate 2, the adjusting shaft 61 slides on the limiting plate 2 along the length direction of the sliding groove 25, under the action of the adjusting shaft 61, the control plate 41 is driven to rotate.

[0052] With reference to Figure 5 And Figure 6 The moving block 62 is slidably connected to the limiting plate 2, and a moving groove 7 is formed in the limiting plate 2 and is arranged along the length direction of the sliding groove 25. A limiting block is slidably connected in the moving groove 7, and the limiting block is welded to the moving block 62. In this embodiment, the limiting block and the moving groove 7 are both arranged in a T-shaped cross section. The rotating shaft 32 is rotatably connected to the moving block 62. The pushing spring 71 is arranged on the limiting plate 2, one end of the pushing spring 71 is welded to the moving block 62, and the other end is fixed to the limiting plate 2. When the reinforcing plate 31 is in the giving way groove 21, the pushing spring 71 is in a compressed state, and the pushing spring 71 has a tendency to push the moving block 62 to move, and the rotating shaft 32 and the control plate 41 both have a tendency to move towards the bottom wall of the sliding groove 25, so that the abutting surface on the control plate 41 can be firmly abutted on the side surface of the supporting plate 6.

[0053] With reference to Figure 5 And Figure 6 When it is necessary to fix two adjacent purlins 14, the adjusting shaft 61 is rotated, the adjusting shaft 61 drives the control plate 41 to rotate by 90 degrees, and the reinforcing plate 31 is rotated to give way to the giving way groove 21. At this time, the B surface 53 corresponds to the sliding groove 25, and the pushing spring 71 pushes the moving block 62 and the control plate 41 and the reinforcing plate 31 to move, so that the reinforcing plate 31 moves faster, and the reinforcing plate 31 is abutted on the inner bottom wall of the purlin 14 more stably.

[0054] With reference to Figure 5 And Figure 6 The two ends of the rotating shaft 32 are both fixedly installed with the control plate 41, and the rotating groove 24 and the sliding groove 25 are both provided with two. Each control plate 41 is fixedly installed with the adjusting shaft 61, which is convenient for adjusting the rotation of the control plate 41 and makes the rotating shaft 32 more stable when moving.

[0055] The implementation principle of the steel structure purlin 14 quick installation structure in the embodiment is as follows: when two adjacent purlins 14 are placed on the connecting plate 12 and abut on the abutting plate 13, the adjusting shaft 61 is rotated, the adjusting shaft 61 drives the control plate 41 to rotate, when the control plate 41 rotates by 90 degrees, the B surface 53 on the control plate 41 corresponds to the sliding groove 25, at this time, the reinforcing plate 31 is rotated out of the giving way groove 21, so that the reinforcing plate 31 is rotated into the purlin 14 through the opening of the end surface of the purlin 14, and then the pushing spring 71 pushes the control plate 41 to move in the sliding groove 25, so that the reinforcing plate 31 is abutted on the inner bottom wall of the purlin 14, thereby being more convenient for fixing the purlin 14, and the preliminary fixing of the purlin 14 can be realized, which is convenient for subsequent welding of the purlin 14.

[0056] The second aspect

[0057] The embodiment discloses a purlin mounting method, which comprises the following steps.

[0058] S1: hoist the purlin 14 to the steel beam 1 by a crane, then adjust the position of the purlin 14, so that the end surface of the purlin 14 abuts against the limiting plate 2 and the side surface abuts against the abutting plate 13;

[0059] S2: after the installation of the two adjacent purlins 14 is completed, rotate the adjusting shaft 61, the adjusting shaft 61 drives the control plate 41 to rotate, when the control plate 41 rotates by 90 degrees, the abutting surface on the control plate 41 abuts against the supporting plate 6, at this time, the B surface 53 on the control plate 41 corresponds to the sliding groove 25, then push the spring 71 to push the moving block 62 and the control plate 41 to move in the sliding groove 25, the control plate 41 moves and drives the rotating shaft 32 and the reinforcing plate 31 rotating by 90 degrees to move, when the B surface 53 abuts against the bottom wall of the sliding groove 25, the reinforcing plate 31 abuts against the inner bottom wall of the purlin 14, thereby realizing the preliminary fixation of the purlin 14.

[0060] The above are preferred embodiments of the application, and the protection scope of the application is not limited thereto, so that: any equivalent change made on the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A quick installation structure of steel structural purlin, comprising a plurality of mounting seats (11) welded on a steel beam (1), characterized in that: The mounting base (11) is fixedly installed with a connecting plate (12) at one end away from the steel beam (1), and a purlin (14) is fixedly installed on the connecting plate (12); the area of the side of the connecting plate (12) away from the steel beam (1) is greater than the area of the side of the mounting base (11) away from the steel beam (1); The connecting plate (12) is fixedly installed with an abutting plate (13), the abutting plate (13) and the connecting plate (12) are arranged at an angle, the purlin (14) arranged on the connecting plate (12) abuts against the abutting plate (13), and the abutting plate (13) is used for limiting the purlin (14); The connecting plate (12) is welded with a limiting plate (2), and the limiting plate (2) is used for abutting against the end face of the purlin (14); The limiting plate (2) is provided with a reinforcing assembly (3) for further fixing the purlin (14) arranged on the connecting plate (12); the reinforcing assembly (3) comprises a rotating shaft (32) rotatably connected to the limiting plate (2) and a reinforcing plate (31) fixed to the rotating shaft (32), and the reinforcing plate (31) is used for abutting against the inner bottom wall of the purlin (14); The rotating shaft (32) is provided with two reinforcing plates (31), and the two reinforcing plates (31) are used for simultaneously fixing two purlins (14) installed on the connecting plate (12); the limiting plate (2) is installed with a control member (4) for pushing the reinforcing plate (31) to move; The control member (4) is arranged as a control plate (41) fixed to the rotating shaft (32), the limiting plate (2) is provided with a rotating groove (24) for rotating the control plate (41), and the bottom wall of the rotating groove (24) of the limiting plate (2) is provided with a sliding groove (25) for accommodating the control plate (41); the control plate (41) comprises two symmetrically arranged long edges (23) and two symmetrically arranged short edges (22); when the reinforcing plate (31) and the steel beam (1) are arranged perpendicularly, the long edges (23) of the control plate (41) abut against the inner bottom wall of the rotating groove (24); when the reinforcing plate (31) and the steel beam (1) are arranged in parallel, the short edges (22) of the control plate (41) correspond to the sliding groove (25), the control plate (41) moves into the sliding groove (25) under the action of gravity, the short edges (22) of the control plate (41) abut against the bottom wall of the sliding groove (25), and the reinforcing plate (31) rotates into the purlin (14) and abuts against the inner bottom wall of the purlin (14).

2. The quick installation structure of purlin of steel structure according to claim 1, characterized in that: The limiting plate (2) is slidably connected with a moving block (62), the moving block (62) slides on the limiting plate (2) along the length direction of the sliding groove (25), the rotating shaft (32) penetrates through the moving block (62) and is rotatably connected to the moving block (62), and the limiting plate (2) is fixedly installed with a pushing spring (71) for pushing the moving block (62) to move towards the bottom wall of the sliding groove (25).

3. The quick installation structure of purlin of steel structure according to claim 2, characterized in that: The control plate (41) is fixedly provided with an adjusting shaft (61), the adjusting shaft (61) rotates and slides on the limiting plate (2), and the end of the adjusting shaft (61) away from the control plate (41) extends out of the limiting plate (2).

4. The quick installation structure of purlin of steel structure according to claim 3, characterized in that: Both ends of the rotating shaft (32) are fixedly connected with the control plate (41).

5. A method of installing a steel structural purlin, characterized by: The steel structure purlin quick mounting structure of claim 4 comprises the following steps: S1: using a crane to hoist the purlin (14) above the steel beam (1), then adjusting the position of the purlin (14), so that the end surface of the purlin (14) abuts against the limiting plate (2), and the side surface abuts against the abutting plate (13); S2: rotating the adjusting shaft (61), the adjusting shaft (61) drives the control plate (41) to rotate, when the control plate (41) rotates by 90 degrees, the short side (22) of the control plate (41) corresponds to the sliding groove (25), then the spring (71) pushes the moving block (62) and the control plate (41) to move in the sliding groove (25).

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