Anti-loosening steel frame fixing piece and assembling and locking method thereof

Abstract

The invention discloses an anti-loosening steel frame fixing part and an assembling and locking method thereof, and relates to the field of steel structure fixing parts, the anti-loosening steel frame fixing part comprises two sets of clamping parts, the two sets of clamping parts are distributed on the two sides of the intersection position of an H-shaped steel roof truss and an H-shaped steel wingceltis, each clamping part comprises a flat pressing base, and the flat pressing bases downwards press bottom flange plates of the H-shaped steel wingceltis; according to the flat pressing device, the expansion pieces abut against the swing arms on the same side to expand in a splayed mode, the nail columns abut against the clamping plates upwards, the swing arms form a lever effect with the nail columns as the center, the top ends of the swing arms apply inclination force to the flat pressing base in the direction of the H-shaped steel wingceltis strips, and therefore the flat pressing base can be pressed tightly. The bottom flange plate of the H-shaped steel wingceltis is pressed downwards by the flat pressing base, the vertical end face of the flat pressing base abuts against and extrudes the web plate of the H-shaped steel wingceltis, the position of the H-shaped steel wingceltis is kept to be fixed, the H-shaped steel wingceltis is stably and flatly attached to the flange plate of the H-shaped steel roof truss, and the cross point of the H-shaped steel roof truss and the H-shaped steel wingceltis can be rapidly and stably locked without punching.

Description

Technical Field

[0001] This invention relates to the field of steel structure fasteners, and more particularly to anti-loosening steel frame fasteners and their assembly and locking methods. Background Technology

[0002] A steel roof structure uses a roof truss as its foundation, and then purlins are distributed and fixed to the roof truss in a cross pattern to form a supporting structure, such as... Figure 1 As shown, H-beams are generally used as roof trusses for large-span flat or gently sloping roof structures, and H-beams are also used for the purlins. This type of roof structure has the advantages of resistance to deformation and high strength. For example, the roof structures used in the large atrium areas of steel structure buildings and other large-span spatial areas of steel structure buildings are all the above-mentioned H-beam structures.

[0003] The intersections of H-beam purlins and H-beam roof trusses are usually fixed by welding or bolts. Since there are many intersections between the purlins and the roof trusses, fixing them one by one by welding is time-consuming and increases the risk of working at height. Fixing them with bolts requires drilling holes at the bolt assembly points before inserting bolts, which also makes the construction time-consuming. Moreover, drilling holes in the surface of the roof truss and purlins will damage their structural strength. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, the purpose of this invention is to provide anti-loosening steel frame fasteners and their assembly and locking methods, which can solve the problems of long time consumption and high construction difficulty in fixing the intersection of H-beam steel purlins and H-beam steel roof trusses by welding or bolting in the large-span roof structure of steel structure buildings.

[0005] To address the problems of the prior art, the technical solution of the present invention is as follows: The anti-loosening steel frame fastener includes two sets of clamping components, distributed on both sides of the intersection of the H-beam roof truss and the H-beam purlin. Each clamping component includes a flat pressure base, which presses down on the bottom flange plate of the H-beam purlin. Clamping plates are symmetrically and rotatably installed on both sides of the flat pressure base, and the clamping plates rotate upward to support the top flange plate of the H-beam roof truss. Swing arms are symmetrically and rotatably installed on both sides of the flat pressure base. Nail holes are opened on the surface of the swing arms, and nail columns are inserted through the nail holes towards the web of the H-beam roof truss. An expansion member is installed between two swing arms on the same side, which is used to resist the two swing arms to expand and swing in a figure-eight shape, so that the nail columns press upward against the clamping plates. The clamping plates and the flat pressure base clamp and fix the flange plates of the H-beam roof truss and the H-beam purlin that are flat against each other.

[0006] Preferably, the expansion member includes a double-ended screw, the bottom of the swing arm has a through groove, both ends of the double-ended screw pass through the through groove of the swing arm on the same side, and the surface of the double-ended screw is threaded with an expansion nut, which abuts against the swing arm from the inside to expand in a figure-eight shape.

[0007] Preferably, a positioning nut is threaded onto the end of the double-ended screw. The positioning nut abuts against the rocker arm from the outside, so that the positioning nut and the expansion nut together compress the expansion position of the positioning rocker arm.

[0008] Preferably, both the positioning nut and the expansion nut are hexagonal nuts, and the end of the positioning nut and the expansion nut that abuts against the swing arm is hemispherical.

[0009] Preferably, the surface of the clamping plate has an embedded groove, and an arc-shaped protruding elastic plate is provided in the embedded groove, the elastic plate elastically abutting against the top flange plate of the H-shaped steel roof truss.

[0010] Preferably, the nail post slides through the nail hole, and the ends of the nail post are arranged with annular grooves to form a rough annular surface. The surface of the clamping plate is arranged with strip grooves to form a rough plane, and the rough annular surface contacts the rough plane.

[0011] Preferably, the nail post has a threaded portion and a smooth portion, the threaded portion of the nail post is threadedly connected to the nail hole, the smooth portion of the nail post presses against the clamping plate, and the end of the nail post presses against the web of the H-beam steel roof truss.

[0012] Preferably, the vertical end face of the flat pressure base abuts against the web of the H-beam steel purlin, half of the bottom surface of the flat pressure base is flat against the top flange plate of the H-beam steel roof truss, and the other half is provided with a right-angle stepped groove. The horizontal plane of the right-angle stepped groove presses down on the bottom flange plate of the H-beam steel purlin, and the vertical plane of the right-angle stepped groove abuts against the edge of the flange plate of the H-beam steel purlin.

[0013] Preferably, the bottom surface, right-angle stepped groove, and vertical end face of the flat pressure base are all covered with a rubber layer.

[0014] The steel frame assembly locking method based on the aforementioned anti-loosening steel frame fastener comprises the following specific steps: A. The H-beam purlins are arranged in a cross shape above the H-beam roof truss, with the bottom flange of the H-beam purlins flush with the top flange of the H-beam roof truss. B. Two sets of clamping components are symmetrically distributed on the top of the H-shaped steel roof truss and on both sides of the H-shaped steel purlin. The flat pressure base presses down on the bottom flange plate of the H-shaped steel purlin, and the swing arm and clamping plate hang down to both sides of the H-shaped steel roof truss. C. Rotate the clamp plate upwards to support the top flange plate of the H-beam roof truss, and insert the nails into the nail holes pointing towards the web of the H-beam roof truss. D. The swing arms on the same side abut against each other through the expansion members, causing the swing arms to expand in a figure-eight shape. The nail column swings upward to press against the clamping plate, so that the clamping plate and the flat pressure base clamp and fix the flange plate of the H-shaped steel roof truss and the H-shaped steel purlin flat.

[0015] Compared with the prior art, the advantages of the present invention are as follows: This invention expands in a figure-eight shape by the expansion member abutting against the swing arm on the same side, causing the nail post to press upward against the clamping plate. The swing arm forms a lever action with the nail post as the center. The top of the swing arm applies an inclined force to the flat pressure base in the direction of the H-beam purlin, causing the flat pressure base to press down on the bottom flange plate of the H-beam purlin. The vertical end face of the flat pressure base abuts against and compresses the web plate of the H-beam purlin, keeping the position of the H-beam purlin fixed. The H-beam purlin and the flange plate of the H-beam roof truss are stably flat and can be quickly and stably locked at the intersection of the H-beam roof truss and the H-beam purlin without drilling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a steel roof structure.

[0017] Figure 2 This is a schematic diagram of an embodiment of the locking of H-beam steel purlins and H-beam steel roof trusses according to the present invention.

[0018] Figure 3 This is a schematic diagram of the locking steps between the H-beam steel purlin and the H-beam steel roof truss of the present invention.

[0019] Figure 4 This is a schematic diagram of the clamping component structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the elastic plate abutting the top flange plate of the H-shaped steel roof truss according to the present invention.

[0021] Figure 6 This is one of the schematic diagrams of the nail column structure of the present invention.

[0022] Figure 7 This is the second schematic diagram of the nail column structure of the present invention.

[0023] Figure 8 This is a schematic diagram of a second embodiment of the locking of H-beam steel purlins and H-beam steel roof trusses according to the present invention.

[0024] Reference numerals: 1. Flat base; 11. Right-angle stepped groove; 12. Rubber layer; 2. Clamping plate; 21. Embedded groove; 22. Elastic plate; 23. Strip groove; 3. Swing arm; 31. Nail hole; 32. Through groove; 4. Nail post; 41. Annular groove; 5. Double-ended screw; 51. Expansion nut; 52. Positioning nut; 6. H-beam steel roof truss; 7. H-beam steel purlin. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Example 1: As Figure 2As shown, the anti-loosening steel frame fastener uses two sets of clamping devices to secure the intersection of the H-beam roof truss 6 and the H-beam purlin 7. The specific fixing operation is as follows: like Figure 2 , Figure 3 , Figure 4 As shown, H-beam purlins 7 are arranged in a cross shape above H-beam roof trusses 6. The bottom flange of H-beam purlins 7 is flush with the top flange of H-beam roof trusses 6. Two sets of clamping members are symmetrically distributed on the top of H-beam roof trusses 6 and on both sides of H-beam purlins 7.

[0027] The clamping component includes a flat pressure base 1. Half of the bottom surface of the flat pressure base 1 is flat against the top flange plate of the H-shaped steel roof truss 6, and the other half is provided with a right-angle stepped groove 11. The horizontal surface of the right-angle stepped groove 11 extends to the vertical end face of the flat pressure base 1, and the horizontal surface of the right-angle stepped groove 11 presses down on the bottom flange plate of the H-shaped steel purlin 7.

[0028] The clamping plates 2 are symmetrically rotated and installed at the bottom positions on both sides of the flat pressure base 1. The clamping plates 2 can swing towards the web of the H-shaped steel roof truss 6. The clamping plates 2 are rotated upward to a horizontal state so that the clamping plates 2 flatly support the top flange plate of the H-shaped steel roof truss 6.

[0029] Two swing arms 3 are symmetrically arranged on both sides of the flat pressure base 1. The top of the swing arm 3 is rotatably connected to the flat pressure base 1 through a pivot, so that the swing arm 3 swings parallel to the edge of the H-shaped steel roof truss 6. The swing arm 3 hangs down to both sides of the H-shaped steel roof truss 6. The middle part of the swing arm 3 is opened with nail holes 31 through the direction of the web of the H-shaped steel roof truss 6. The bottom of the swing arm 3 is opened with through grooves 32 through the direction of the edge of the H-shaped steel roof truss 6, so that the nail post 4 passes through the nail holes 31, and the end of the nail post 4 is located below the clamping plate 2.

[0030] An expansion member is installed between the two swing arms 3 on the same side. The expansion member includes a double-ended screw 5. The two ends of the double-ended screw 5 pass through the through grooves 32 on the surface of the two swing arms 3 on the same side. The surface of the double-ended screw 5 is threaded with two expansion nuts 51. Tightening the two expansion nuts 51 moves them toward the two swing arms 3 respectively. The expansion nuts 51 abut against the inner side of the swing arm 3, causing the swing arm 3 to swing upward in a figure-eight shape. The nail post 4 moves upward with the swing arm 3 until the nail post 4 abuts against the clamping plate 2. The expansion nuts 51 are tightened continuously, causing the nail post 4 to exert upward force to press against the clamping plate 2. At this time, the swing arm 3 forms a lever action with the nail post 4 as the center. Due to the expansion force at the bottom end of the swing arm 3, the top end of the swing arm 3 applies an inclined force toward the H-shaped steel purlin 7 to the flat pressure base 1. The downward component of the inclined force causes the horizontal plane of the right-angle stepped groove 11 at the bottom of the flat pressure base 1 to press down on the bottom flange plate of the H-beam steel purlin 7. The horizontal component of the inclined force causes the vertical end face of the flat pressure base 1 to abut against and compress the web of the H-beam steel purlin 7. The vertical surface of the right-angle stepped groove 11 abuts against the edge of the flange plate of the H-beam steel purlin 7. The vertical end faces of the two flat pressure bases 1 abut against and clamp the web of the H-beam steel purlin 7, thus fixing the position of the H-beam steel purlin 7. The downward pressure of the flat pressure base 1 on the bottom flange plate of the H-beam steel purlin 7 and the upward force of the clamping plate 2 on the top flange plate of the H-beam steel roof truss 6 make the H-beam steel purlin 7 and the flange plate of the H-beam steel roof truss 6 stably flat and securely attached, thus achieving stable locking of the intersection point of the H-beam steel roof truss 6 and the H-beam steel purlin 7.

[0031] like Figure 2 As shown, a positioning nut 52 can be threaded onto the end of the double-ended screw 5. The positioning nut 52 abuts against the rocker arm 3 from the outside, so that the positioning nut 52 and the expansion nut 51 together squeeze the expansion position of the positioning rocker arm 3, thereby increasing the stability of the rocker arm 3 in maintaining its expansion angle.

[0032] Both the positioning nut 52 and the expansion nut 51 are hexagonal nuts. The end of the positioning nut 52 and the expansion nut 51 that abuts against the rocker arm 3 is hemispherical, so that the positioning nut 52 and the expansion nut 51 can stably abut against the surface of the rocker arm 3.

[0033] like Figure 5 As shown, the surface of the clamping plate 2 has an embedded groove 21, and an elastic plate 22 is installed in the embedded groove 21. The elastic plate 22 is an arc-shaped plate made of elastic steel plate. One end of the elastic plate 22 is rotatably positioned in the embedded groove 21, and the other end of the elastic plate 22 abuts against the surface of the embedded groove 21. The elastic plate 22 protrudes arc-shaped from the embedded groove 21. When the nail column 4 presses against the clamping plate 2, the clamping plate 2 elastically abuts against the top flange plate of the H-shaped steel roof truss 6 through the elastic plate 22, so that the clamping and fixing of the clamping plate 2 against the top flange plate of the H-shaped steel roof truss 6 has a buffer gap, which is used to overcome the vibration force at the intersection of the H-shaped steel purlin 7 and the H-shaped steel roof truss 6 and prevent the fasteners from loosening due to vibration.

[0034] The bottom surface, right-angle stepped groove 11 and vertical end face of the flat pressure base 1 are all covered with a rubber layer 12. The rubber layer 12 increases the contact friction between the flat pressure base 1 and the H-shaped steel purlin 7 and the H-shaped steel roof truss 6, so that the flat pressure base 1 can stably clamp the bottom flange plate of the H-shaped steel purlin 7.

[0035] like Figure 6 As shown, the nail post 4 is a smooth cylinder, allowing the nail post 4 to slide through the nail hole 31. Annular grooves 41 are arranged at the end of the nail post 4 to form a rough annular surface. Strip grooves 23 are arranged on the surface of the clamping plate 2 to form a rough plane. The rough annular surface contacts the rough plane to prevent the nail post 4 from slipping.

[0036] Example 2: The clamping and expansion components in this example are the same as in Example 1. The difference lies in the locking positions of the clamping components with the H-beam purlin 7 and the H-beam roof truss 6. The specific locking method is as follows: like Figure 8 As shown, the clamping components are symmetrically arranged on both sides of the H-beam roof truss 6 and below the H-beam purlin 7. The flat pressure base 1 is flat against the top flange of the H-beam roof truss 6. The clamping plate 2 rotates and flat against the bottom flange of the H-beam purlin 7. The swing arm 3 is rotated upward to both sides of the H-beam purlin 7. The nail post 4 passes through the nail hole 31 and points towards the web of the H-beam purlin 7. The expansion component abuts against the two swing arms 3 on the same side to expand. At this time, the two swing arms 3 on the same side expand in an inverted V shape. The swinging nail post 4 presses down on the clamping plate 2, so that the clamping plate 2 and the flat pressure base 1 clamp and fix the H-beam purlin 7 and the flange of the H-beam roof truss 6 that are flat against it.

[0037] Example 3: The difference from Example 1 lies in the connection method between the nail post 4 and the nail hole 31. The specific operation is as follows: like Figure 7 As shown, the nail post 4 has a threaded part and a smooth part. The outer end of the nail post 4 has a hexagonal end. The threaded part of the nail post 4 is threadedly connected to the nail hole 31. The smooth part of the nail post 4 presses against the clamping plate 2, which not only prevents the nail post 4 from slipping, but also allows the nail post 4 to be rotated so that the end of the nail post 4 presses against the web of the H-shaped steel roof truss 6, thereby increasing the positioning and support stability of the nail post 4.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening steel frame fastener, comprising two sets of clamping members distributed on both sides of the intersection of an H-beam roof truss (6) and an H-beam purlin (7), characterized in that, The clamping components include a flat pressure base (1), which presses down on the bottom flange of the H-beam steel purlin (7). Clamping plates (2) are symmetrically rotated on both sides of the flat pressure base (1). The clamping plates (2) rotate upward to support the top flange of the H-beam steel roof truss (6). Swing arms (3) are symmetrically rotated on both sides of the flat pressure base (1). Nail holes (31) are opened on the surface of the swing arms (3). Nail columns (4) are inserted through the nail holes (31) towards the web of the H-beam steel roof truss (6). An expansion member is set between the two swing arms (3) on the same side. The expansion member is used to resist the two swing arms (3) to swing in a figure-eight pattern, so that the nail columns (4) press the clamping plates (2) upward. The clamping plates (2) and the flat pressure base (1) clamp and fix the flange of the H-beam steel roof truss (6) and the H-beam steel purlin (7) flat against each other.

2. The anti-loosening steel frame fastener according to claim 1, characterized in that, The expansion member includes a double-ended screw (5), and the bottom of the swing arm (3) is provided with a through groove (32). The two ends of the double-ended screw (5) pass through the through groove (32) of the swing arm (3) on the same side. The surface of the double-ended screw (5) is threaded with an expansion nut (51), and the expansion nut (51) abuts against the swing arm (3) from the inside to expand in a figure-eight shape.

3. The anti-loosening steel frame fastener according to claim 2, characterized in that, The end of the double-headed screw (5) is threaded with a positioning nut (52). The positioning nut (52) abuts against the swing arm (3) from the outside, so that the positioning nut (52) and the expansion nut (51) together squeeze the expansion position of the positioning swing arm (3).

4. The anti-loosening steel frame fastener according to claim 3, characterized in that, The positioning nut (52) and expansion nut (51) are both hexagonal nuts, and the end of the positioning nut (52) and expansion nut (51) that abuts against the swing arm (3) is hemispherical.

5. The anti-loosening steel frame fastener according to claim 1, characterized in that, The surface of the clamp (2) has an embedded groove (21), and an arc-shaped protruding elastic plate (22) is provided in the embedded groove (21). The elastic plate (22) elastically abuts against the top flange of the H-shaped steel roof truss (6).

6. The anti-loosening steel frame fastener according to claim 1, characterized in that, The nail post (4) slides through the nail hole (31), and the end of the nail post (4) is arranged with annular grooves (41) to form a rough annular surface. The surface of the clamping plate (2) is arranged with strip grooves (23) to form a rough plane. The rough annular surface is in contact with the rough plane.

7. The anti-loosening steel frame fastener according to claim 1, characterized in that, The nail post (4) has a threaded part and a smooth part. The threaded part of the nail post (4) is threadedly connected to the nail hole (31). The smooth part of the nail post (4) presses against the clamping plate (2). The end of the nail post (4) presses against the web of the H-shaped steel roof truss (6).

8. The anti-loosening steel frame fastener according to claim 1, characterized in that, The vertical end face of the flat pressure base (1) abuts against the web of the H-shaped steel purlin (7). Half of the bottom surface of the flat pressure base (1) is flat against the top flange of the H-shaped steel roof truss (6), and the other half is provided with a right-angle stepped groove (11). The horizontal surface of the right-angle stepped groove (11) presses down on the bottom flange of the H-shaped steel purlin (7), and the vertical surface of the right-angle stepped groove (11) abuts against the edge of the flange of the H-shaped steel purlin (7).

9. The anti-loosening steel frame fastener according to claim 8, characterized in that, The bottom surface, right-angle stepped groove (11) and vertical end face of the flat pressure base (1) are all covered with a rubber layer (12).

10. A steel frame assembly and locking method based on the anti-loosening steel frame fastener according to any one of claims 1-8, characterized in that, The specific steps are as follows: A. The H-shaped steel purlins (7) are arranged in a cross shape above the H-shaped steel roof truss (6), and the bottom flange of the H-shaped steel purlins (7) is flush with the top flange of the H-shaped steel roof truss (6). B. Two sets of clamping components are symmetrically distributed on the top of the H-shaped steel roof truss (6) and on both sides of the H-shaped steel purlin (7). The flat pressure base (1) presses down on the bottom flange of the H-shaped steel purlin (7), and the swing arm (3) and clamping plate (2) hang down to both sides of the H-shaped steel roof truss (6). C. Rotate the clamp (2) to lift the top flange of the H-shaped steel roof truss (6) upwards, and insert the nail column (4) through the nail hole (31) pointing towards the web of the H-shaped steel roof truss (6); D. The swing arms (3) on the same side abut against each other through the expansion member, so that the swing arms (3) expand in a figure-eight shape, and the nail column (4) swings upward to press the clamp plate (2), so that the clamp plate (2) and the flat pressure base (1) clamp and fix the flange plate of the H-shaped steel roof truss (6) and the H-shaped steel purlin (7) flat.

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