A corrugated board connection structure for resisting negative wind pressure

Abstract

The utility model relates to the technical field of metal corrugated sheet roofs, and discloses a corrugated sheet negative wind pressure resistance connection structure, comprising a roof purlin, and corrugated components are respectively pressed and arranged on both sides of the upper end of a connecting base, and are fixed to the roof purlin by passing through a stainless steel fastener and a polyamide base through self-tapping screws, and the vertical edge interface of the corrugated metal sheet is 360° engaged with the stainless steel fastener, and the polyamide base is inserted into a corresponding groove, and the self-tapping screw is first passed through the stainless steel fastener, and then the polyamide base is fixed, and the self-tapping screw is tightened on the roof purlin, and the stainless steel fastener and the polyamide base are fixed together on the roof purlin, and the adjacent corrugated metal sheet is inserted into the first fixed groove, and the installed corrugated metal sheet female buckle is pressed on the male buckle of the corrugated metal sheet installed first, and the corrugated metal sheet is installed in place, and the vertical edge of the corrugated metal sheet is engaged once, and the vertical edge of the corrugated metal sheet is engaged twice, and the two vertical edges of the corrugated metal sheet are engaged with the stainless steel fastener, and the installation is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of metal profiled plate roofs, in particular to a profiled plate negative wind pressure resistance connection structure. Background Art

[0002] Metal corrugated sheet roofs are widely used in large-space and large-span buildings due to their light weight, fast construction speed, and low cost. However, due to the large thermal expansion coefficient of metal, temperature changes cause the metal sheet roof to continuously shrink and expand in its length direction. The nail holes that penetrate the roof panel and fix it to the purlin will be enlarged due to the shearing effect of temperature stress, and the nails will break, causing the roof to leak and the roof panel to fall off.

[0003] Nowadays, most metal corrugated sheet roofs are installed in the form of vertical locking. The edges of the metal roof panels are pressed into various forms by metal sheet profiling equipment and interlocked with the corresponding supports fixed on the purlins. There are no nail holes on the roof, and the metal roof panels can also wrap around the supports and slide in the length direction to release the temperature stress of the metal roof panels. However, metal sheets have strong ductility and large elastic deformation capacity. Under the repeated action of positive and negative wind pressure for a long time, the accumulated creep causes the gap between the roof panel and the support to become larger, and the connection point gradually loosens. Under the action of strong winds in the later period, once the deformation of the roof panel exceeds the constraint range of the support, the roof panel will be disengaged from the support and form a disengagement phenomenon, pulling up the adjacent roof panels together, causing the roof panel to be blown off by the strong wind;

[0004] Therefore, we proposed a corrugated board connection structure to resist negative wind pressure in order to solve the above problems. Summary of the invention

[0005] The utility model aims to provide a negative wind pressure resistant connection structure of a corrugated plate, so as to solve the problem that the metal plate has strong ductility and large elastic deformation capacity, and under the repeated action of positive and negative wind pressure for a long time, the creep accumulation causes the gap between the roof panel and the support to become larger, and the connection point gradually loosens. Under the action of strong wind in the later period, once the deformation of the roof panel exceeds the constraint range of the support, the roof panel will be disengaged from the support, and the unfastening phenomenon will be formed, and the adjacent roof panels will be pulled up together, thereby causing the roof panel to be blown off by the strong wind;

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrugated board anti-negative wind pressure connection structure, comprising a roof purlin, the upper end of the roof purlin is fixedly installed with a connecting base, and both sides of the upper end of the connecting base are respectively pressed and provided with a corrugated component, and the corrugated component is fixedly installed on the upper end of the connecting base through a fixing component;

[0007] The profiled assembly includes a profiled metal plate and a corresponding groove formed at one end of the profiled metal plate;

[0008] Preferably, the connecting base comprises a polyamide base and first grooves provided on both sides of the upper end of the polyamide base;

[0009] Preferably, the fixing assembly comprises a stainless steel fastener and self-tapping screws threadedly connected to both sides of the upper end of the stainless steel fastener;

[0010] Preferably, the corrugated metal plates are arranged on both sides of the upper end of the polyamide base, the corresponding grooves are embedded in the inner cavity of the first groove, and the corrugated metal plates are fixedly installed on the upper end of the polyamide base by stainless steel fasteners and self-tapping screws;

[0011] Preferably, the upper portion of the profiled metal plate is 360° engaged with the stainless steel fastener;

[0012] Preferably, the corrugated metal plate and polyamide base are made of stainless steel and polyamide materials to avoid galvanic corrosion caused by metal contact with different potential differences;

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the sheet of the corrugated metal sheet is formed into a 360° interlocking interface of the upright edge through the corrugating equipment, and at the same time a groove is formed on the side of the upright edge as the corresponding groove, the polyamide base is provided with a first groove at a position corresponding to the corresponding groove, the self-tapping screws pass through the stainless steel fasteners and the polyamide base and are fixed on the roof purlin, the upright edge interface of the corrugated metal sheet is interlocked with the stainless steel fastener at 360°, the polyamide base is snapped into the corresponding groove, the self-tapping screws are first passed through the stainless steel fasteners, and then the polyamide base is fixed, the self-tapping screws are tightened on the roof purlin, the stainless steel fasteners and the polyamide base are fixed together on the roof purlin, the adjacent corrugated metal sheet is snapped into the fixed first groove, the installed female buckle of the corrugated metal sheet is pressed on the male buckle of the corrugated metal sheet installed first, the corrugated metal sheet is installed in place, the upright edge of the corrugated metal sheet is interlocked once, the upright edge of the corrugated metal sheet is interlocked twice, the two upright edges of the corrugated metal sheet are interlocked with the stainless steel fasteners, and the installation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the components of the utility model before installation;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model after the components are installed;

[0017] Figure 4 This is a schematic diagram of the deformation of the 270° interlocking corrugated plate under negative wind pressure;

[0018] Figure 5It is a schematic diagram of the stress analysis of the 270° interlocking profiled plate after deformation under negative wind pressure;

[0019] Figure 6 This is a schematic diagram of the deformation of the 360° interlocking corrugated plate under negative wind pressure;

[0020] Figure 7 It is a schematic diagram of the stress analysis of the 360° interlocking corrugated plate after deformation under negative wind pressure;

[0021] Figure 8 It is a schematic diagram of deformation of the connecting profiled plate of the utility model under negative wind pressure;

[0022] Fig. 9 It is a schematic diagram of the force analysis of the utility model after the connection profiled plate is deformed under negative wind pressure;

[0023] In the figure: 1. roof purlin; 2. connecting base; 21. polyamide base; 22. first groove; 3. corrugated component; 31. corrugated metal plate; 32. corresponding groove; 4. fixing component; 41. stainless steel fastener; 42. self-tapping screw. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0025] See also Figure 1 A corrugated sheet anti-negative wind pressure connection structure comprises a roof purlin 1, a connecting base 2 is fixedly installed on the upper end of the roof purlin 1, and a corrugated component 3 is respectively pressed and arranged on both sides of the upper end of the connecting base 2. The corrugated component 3 is fixedly installed on the upper end of the connecting base 2 through a fixing component 4. The corrugated component 3 comprises a corrugated metal plate 31 and a corresponding groove 32 opened at one end of the corrugated metal plate 31;

[0026] See also Figure 2 , the connecting base 2 includes a polyamide base 21 and first grooves 22 opened on both sides of the upper end of the polyamide base 21;

[0027] The fixing assembly 4 includes a stainless steel fastener 41 and a self-tapping screw 42 threadedly connected to the stainless steel fastener 41;

[0028] The corrugated metal plate 31 is arranged on both sides of the upper end of the polyamide base 21, and the corresponding groove 32 is embedded in the inner cavity of the first groove 22. The corrugated metal plate 31 is fixedly installed on the upper end of the polyamide base 21 by stainless steel fasteners 41 and self-tapping screws 42;

[0029] See also Figure 3 The upper part of the profiled metal plate 31 is 360° engaged with the stainless steel fastener 41, and its width and height directions are constrained in the polyamide base 21. The profiled metal plate 31 can slide in the polyamide base 21 along its length direction, thereby preventing the polyamide base 21 and the self-tapping screws 42 fixing the polyamide base 21 from being sheared due to temperature deformation of the profiled metal plate 31;

[0030] The corrugated metal plate 31 and the polyamide base 21 are made of stainless steel and polyamide materials to avoid electrochemical corrosion caused by metal contact with different potential differences. The corresponding grooves 32 on the side of the upright edge of the corrugated metal plate 31 can directly transfer the force of the corrugated metal plate 31 to the polyamide base 21 through the corresponding grooves 32, avoiding direct force on the bite between the corrugated metal plates 31, eliminating the influence of the corrugated metal plate 31 on the bite after deformation, maintaining the original structural form of the bite under stress, thereby improving the wind resistance of the roof;

[0031] The connection method of the corrugated metal sheet 31 can be combined with the corrugated structure for installing photovoltaic modules to produce a corrugated sheet corresponding to the length and width modulus of the photovoltaic module, or connected with a matching locking clip structure to install the keel to meet the installation requirements of photovoltaic modules or decorative panels on the roof;

[0032] Specifically, the sheet of the corrugated metal plate 31 is formed into a 360° bite interface of the vertical edge by a profiling device, and a groove is formed on the side of the vertical edge as the corresponding groove 32. The polyamide base 21 is provided with a first groove 22 at a position corresponding to the corresponding groove 32. The polyamide base 21 is first inserted into the corresponding groove 32, and then the self-tapping screws 42 are passed through the stainless steel fasteners 41, and then the polyamide base 21 is fixed on the roof purlin 1. After tightening the self-tapping screws 42, the stainless steel fasteners 41 and the polyamide base 21 are fixed together. It is fixed on the roof purlin 1, and the corresponding groove 32 of the adjacent corrugated metal sheet 31 is inserted into the first groove 22 on the other side of the fixed polyamide base 21. The female buckle of the corrugated metal sheet 31 installed later is pressed on the male buckle of the corrugated metal sheet 31 installed earlier. The two corrugated metal sheets 31 are installed in place, and the vertical edges of the corrugated metal sheets 31 are engaged once, and the vertical edges of the corrugated metal sheets 31 are engaged twice. The vertical edges of the two corrugated metal sheets 31 are engaged 360° with the stainless steel fasteners 41, connected and fixed together, and the installation is completed;

[0033] Stress analysis of traditional standing seam connection under negative wind pressure:

[0034] See also Figure 4 , the 270° interlocking corrugated metal sheet is subjected to negative wind pressure, and the middle of the sheet bulges upward;

[0035] See also Figure 5, after the 270° interlocking corrugated metal plate bulges upward, it drives the vertical edge to rotate with the interlocking point as the axis. After the vertical edge of the 270° interlocking corrugated metal plate rotates, it pries the interlocking fixed points A and B, widening the distance between A and B. If the negative wind pressure continues to increase, the distance between A and B will be greater than the width of the support head, and the 270° interlocking corrugated metal plate will separate from the corrugated plate support; if the negative wind pressure fails to reach the strength to destroy the interlocking point, it will also produce creep due to repeated action, causing the distance between A and B to gradually widen, and the wind-resistant ability of the corrugated plate system will gradually decrease;

[0036] See also Figure 6 , the 360° interlocking corrugated metal sheet is subjected to negative wind pressure, and the middle of the sheet bulges upward;

[0037] See also Figure 7 , after the 360° interlocking corrugated metal sheet bulges upward, it drives the vertical edge to rotate with the interlocking point as the axis. After the vertical edge of the 360° interlocking corrugated metal sheet rotates, it pries the interlocking fixed points A and B, widens the distance between A and B, and the rotation of the vertical edge of the corrugated sheet at point B will expand the fastener interlocking opening. If the negative wind pressure continues to increase, the distance between A and B will increase, the fastener will fail, and the 360° interlocking corrugated metal sheet will separate from the corrugated sheet support; if the negative wind pressure fails to reach the strength to destroy the interlocking point, it will also produce creep due to repeated action, so that the distance between A and B will gradually widen, and the wind-resistant ability of the corrugated sheet system will gradually decrease;

[0038] Please refer to 8, the corrugated metal plate 31 is subjected to negative wind pressure, and the middle of the plate bulges upward;

[0039] See also Fig. 9 After the corrugated metal plate 31 bulges upward, the rotation points are at points A and B in the corrugated metal plate groove 32. The corrugated metal plate groove 32 is constrained in the first groove 22 of the polyamide base 21. The rotation of the corrugated metal plate 31 in the corrugated metal plate groove 32 produces a prying effect on points A1 and B1 in the first groove 22 of the polyamide base 21, but does not produce a prying effect on the bite vertical edge and the stainless steel fastener 41. By increasing the rigidity of the polyamide base 21, the wind resistance of the corrugated plate system can be effectively improved;

[0040] The contents not described in detail in this specification belong to the prior art known to professionals in the field;

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A corrugated board connection structure for resisting negative wind pressure, comprising a roof purlin (1), characterized in that: The upper end of the roof purlin (1) is fixedly mounted on a connecting base (2), and both sides of the upper end of the connecting base (2) are respectively provided with press-fitted profiled components (3), and the press-fitted components (3) are fixedly mounted on the upper end of the connecting base (2) via a fixing component (4); The profiled component (3) comprises a profiled metal plate (31) and a corresponding groove (32) formed at one end of the profiled metal plate (31).

2. The negative wind pressure resistant connection structure of profiled plate according to claim 1, characterized in that: The connecting base (2) comprises a polyamide base (21) and first grooves (22) formed on both sides of the upper end of the polyamide base (21).

3. The negative wind pressure resistant connection structure of profiled plate according to claim 2, characterized in that: The fixing assembly (4) comprises a stainless steel fastener (41) and self-tapping screws (42) threadedly connected to both sides of the upper end of the stainless steel fastener (41).

4. The negative wind pressure resistant connection structure of profiled plate according to claim 3, characterized in that: The profiled metal plates (31) are arranged on both sides of the upper end of the polyamide base (21), and the corresponding grooves (32) are embedded in the inner cavity of the first groove (22). The profiled metal plates (31) are fixedly mounted on the upper end of the polyamide base (21) by means of stainless steel fasteners (41) and self-tapping screws (42).

5. The negative wind pressure resistant connection structure of profiled plate according to claim 4, characterized in that: The upper portion of the profiled metal plate (31) is engaged with the stainless steel fastener (41) in a 360° snap connection.

6. The negative wind pressure resistant connection structure of profiled plate according to claim 5, characterized in that: The profiled metal plate (31) and the polyamide base (21) are made of stainless steel and polyamide materials to avoid galvanic corrosion caused by contact between metals with different potential differences.

Images