A type of cold-drawn special-shaped steel column resistant to bending

Abstract

This invention relates to the field of steel profile technology, specifically to a bending-resistant cold-drawn special-shaped steel column, comprising an I-shaped special-shaped steel. Both ends of the I-shaped special-shaped steel have pre-reserved slots. One set of pre-reserved slots has a pre-reserved hole on its surface. A connecting plate is rotatably connected inside the other set of pre-reserved slots, and the connecting plate has a pre-reserved hole on its surface. One end of the I-shaped special-shaped steel is provided with a screw, and the other end of the I-shaped special-shaped steel has a positioning insertion hole. Two sets of I-shaped special-shaped steel are provided. When the two sets of I-shaped special-shaped steel are stacked vertically, the screw at one end of one set of I-shaped special-shaped steel is inserted into the positioning insertion hole at the other end of the other set of I-shaped special-shaped steel. The beneficial effect is that the bending-resistant cold-drawn special-shaped steel column proposed in this invention provides screws and positioning insertion holes at both ends of the I-shaped special-shaped steel. When the two sets of I-shaped special-shaped steel are stacked vertically, the screw at the top of one set of I-shaped special-shaped steel is inserted into the positioning insertion hole at the bottom of the other set of I-shaped special-shaped steel, allowing for rapid positioning of the two sets of I-shaped special-shaped steel when stacked vertically.

Description

Technical Field

[0001] This invention relates to the field of structural steel, specifically to a cold-drawn special-shaped steel column resistant to bending. Background Technology

[0002] Special-shaped steel is a shorthand term for complex and irregularly shaped cross-section steel, belonging to the category of structural steel, and is distinguished from the terminology used for simple cross-section steel. Depending on the manufacturing process, it can be further divided into hot-rolled special-shaped steel, cold-drawn (cold-stretched) special-shaped steel, cold-bent special-shaped steel, welded special-shaped steel, etc. Usually, special-shaped steel specifically refers to hot-rolled special-shaped steel.

[0003] In the existing technology, I-shaped steel is widely used in the construction industry. It is mainly used as the column of the frame structure, and two I-shaped steel columns are fixed by welding or bolts.

[0004] However, when bolts are used to fix the two sets of I-shaped steel columns, multiple adjustments are required to align the two vertically stacked I-shaped steel columns when the upper I-shaped steel column is hoisted and lowered, which affects the improvement of construction efficiency. Furthermore, the two I-shaped steel columns fixed by welding have the problem of low bending resistance at the weld joint. Summary of the Invention

[0005] The purpose of this invention is to provide a bending-resistant cold-drawn special-shaped steel column to solve the problems mentioned in the background art, such as the need for multiple adjustments to align the two vertically stacked I-shaped steel columns when the upper I-shaped steel column is hoisted and lowered during the fixing of two sets of I-shaped special-shaped steel columns with bolts, which affects the improvement of construction efficiency; and the problem that the bending resistance of the welded joints of the two I-shaped special-shaped steel columns fixed by welding is low.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bending-resistant cold-drawn special-shaped steel column, comprising an I-shaped special-shaped steel, wherein both ends of the I-shaped special-shaped steel are provided with reserved slots, a reserved hole one is provided on the surface of one set of reserved slots, a connecting plate is rotatably connected inside the other set of reserved slots, a reserved hole two is provided on the surface of the connecting plate, a screw is provided at one end of the I-shaped special-shaped steel, a positioning insertion hole is provided at the other end of the I-shaped special-shaped steel, two sets of I-shaped special-shaped steel are provided, when the two sets of I-shaped special-shaped steel are stacked vertically, the screw at one end of one set of I-shaped special-shaped steel is inserted into the positioning insertion hole at the other end of the other set of I-shaped special-shaped steel, and the connecting plate on the surface of one set of I-shaped special-shaped steel is inserted into the reserved slot of the other set of I-shaped special-shaped steel, the two sets of I-shaped special-shaped steel are fixed by bolts, the bolts passing through the reserved hole one and the reserved hole two.

[0007] Preferably, the I-shaped profiled steel is in an "I"-shaped plate structure. Each group of reserved grooves has two, and the two reserved grooves are symmetrically distributed with respect to the I-shaped profiled steel. Multiple anti-fold grooves are provided on the surfaces of the two parallel side plates of the I-shaped profiled steel, and the height of the anti-fold grooves is equal to the height of the I-shaped profiled steel.

[0008] Preferably, anti-fold reinforcement ribs are integrally formed at the corners of the plate body of the I-shaped profiled steel.

[0009] Preferably, a limiting shaft is fixed between the two parallel side walls of the reserved groove. The limiting shaft is movably inserted into the insertion hole. The insertion hole is opened on the surface of the connecting plate, and the height of the insertion hole is equal to the height of the reserved groove.

[0010] Preferably, a picking groove is provided at one end of the I-shaped profiled steel. There are two groups of picking grooves, and the two groups of picking grooves are symmetrically distributed with respect to the reserved groove. A screwing groove is opened on the bottom surface of the picking groove. The diameter of the screwing groove is smaller than the diameter of the picking groove. A screw is screwed into the screwing groove. The height of the screw is greater than the height of the screwing groove, and the height of the screw is less than the sum of the heights of the picking groove and the screwing groove.

[0011] Preferably, a plurality of finger grooves are provided at one end of the screw, and a silica gel gasket is fixed on the surface of the finger grooves. The silica gel gasket is in a "匚"-shaped plate structure.

[0012] Preferably, side grooves are provided on both sides of the connecting plate, and rubber clamping strips are fixed on the surfaces of the side grooves. The thickness of the rubber clamping strips is greater than the depth of the side grooves. The rubber clamping strips are clamped between the connecting plate and the reserved groove.

[0013] Preferably, lapping grooves and supporting grooves are provided on both sides of the I-shaped profiled steel respectively. There are two lapping grooves and two supporting grooves. The two lapping grooves are respectively distributed on the two parallel side plates of the I-shaped profiled steel. The supporting grooves and the lapping grooves correspond to each other one by one, and the lapping grooves and the supporting grooves are symmetrically distributed with respect to the side plates of the I-shaped profiled steel.

[0014] Preferably, a rubber gasket is fixed on the surface of the supporting groove. The rubber gasket is in an "L"-shaped plate structure. After two groups of I-shaped profiled steels are stacked horizontally, the two lapping grooves of one group of I-shaped profiled steels are respectively inserted into the supporting grooves of the other group of I-shaped profiled steels, and the side plates of one group of I-shaped profiled steels are lapped on the rubber gaskets of the other group of I-shaped profiled steels. Compared with the prior art, the beneficial effects of the present invention are:

[0015] The bending-resistant cold-drawn special-shaped steel column proposed in this invention features screws and positioning holes at both ends of the I-shaped special-shaped steel. When two sets of I-shaped special-shaped steel are stacked vertically, the screws at the top of one set of I-shaped special-shaped steel are inserted into the positioning holes at the bottom of the other set of I-shaped special-shaped steel, achieving rapid positioning when the two sets of I-shaped special-shaped steel are stacked vertically, thus improving on-site construction efficiency. Furthermore, the insertion of the screws into the positioning holes enhances the bending resistance of the two I-shaped special-shaped steel after welding. And after the two sets of I-shaped special-shaped steel are fixed by connecting plates and bolts, the connection firmness of the two I-shaped special-shaped steel is strengthened, improving the bending resistance at the weld point after the two sets of I-shaped special-shaped steel are connected. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the I-shaped irregular steel structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the half-section structure of the I-shaped special steel of the present invention;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure after two sets of I-shaped special steels are vertically stacked and connected according to the present invention;

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B;

[0021] Figure 6 This is a partial sectional view of the structure after two sets of I-shaped special steels are vertically stacked and connected according to the present invention.

[0022] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C;

[0023] Figure 8 This is a half-sectional view of the structure after two sets of I-shaped special steels are vertically stacked and connected according to the present invention.

[0024] Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point D;

[0025] Figure 10 This is a schematic diagram of the structure after two sets of I-shaped special steel are stacked flat according to the present invention;

[0026] Figure 11 for Figure 10 Enlarged schematic diagram of the structure at point E in the middle;

[0027] Figure 12 This is a schematic diagram of the connecting plate structure of the present invention;

[0028] Figure 13 This is a schematic diagram of the screw structure of the present invention.

[0029] In the diagram: 1. I-shaped special steel; 2. Reserved groove; 3. Reserved hole 1; 4. Limiting shaft; 5. Insertion hole.

[0030] 5. Reserved hole 2; 6. Side groove; 7. Rubber clamp strip; 8. Bolt; 9. Grip groove; 10. Threaded groove; 11. Threaded rod; 12. Finger groove; 13. Silicone gasket; 14. Positioning insertion hole; 15. Bending groove; 16. Bending reinforcement rib; 17. Overlap groove; 18. Support groove; 19. Rubber gasket; 20. Connecting plate; 21. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see Figure 1 , Figure 2 , Figure 4 , Figure 6 as well as Figure 8This invention provides a technical solution: a bending-resistant cold-drawn special-shaped steel column, comprising an I-shaped special-shaped steel 1, with reserved slots 2 at both ends of the I-shaped special-shaped steel 1, a reserved hole 3 on the surface of one set of reserved slots 2, and a connecting plate 21 rotatably connected inside the other set of reserved slots 2, with a reserved hole 6 on the surface of the connecting plate 21, a screw 12 at one end of the I-shaped special-shaped steel 1, and a positioning insertion hole 15 at the other end of the I-shaped special-shaped steel 1. Two sets of I-shaped special-shaped steel 1 are provided. When the two sets of I-shaped special-shaped steel 1 are stacked vertically, the screw 12 at one end of one set of I-shaped special-shaped steel 1 is inserted into the positioning insertion hole 15 at the other end of the other set of I-shaped special-shaped steel 1, and the connecting plate 21 on the surface of one set of I-shaped special-shaped steel 1 is inserted into the reserved slot 2 of the other set of I-shaped special-shaped steel 1. Two sets of I-shaped steel profiles 1 are fixed by bolts 9, which pass through pre-drilled holes 3 and 6. Screws 12 and positioning holes 15 are respectively installed at both ends of the I-shaped steel profiles 1. When the two sets of I-shaped steel profiles 1 are stacked vertically, the screw 12 at the top of one set of I-shaped steel profiles 1 is inserted into the positioning hole 15 at the bottom of the other set of I-shaped steel profiles 1, achieving rapid positioning when the two sets of I-shaped steel profiles 1 are stacked vertically, improving on-site construction efficiency. Furthermore, the insertion of the screw 12 into the positioning hole 15 enhances the bending resistance of the two I-shaped steel profiles 1 after welding. And after the two sets of I-shaped steel profiles 1 are fixed by the connecting plate 21 and bolts 9, the connection strength of the two I-shaped steel profiles 1 is reinforced, improving the bending strength at the weld point after the two sets of I-shaped steel profiles 1 are connected.

[0034] Example 2

[0035] Based on Example 1, in order to improve the bending resistance of the I-shaped steel 1, the I-shaped steel 1 has an "I"-shaped plate structure. Each set of reserved slots 2 has two slots, which are symmetrically distributed about the I-shaped steel 1. Multiple bending resistance grooves 16 are opened on the surface of the two parallel side plates of the I-shaped steel 1. The height of the bending resistance grooves 16 is equal to the height of the I-shaped steel 1. Bending resistance reinforcing ribs 17 are integrally formed at the corners of the plate of the I-shaped steel 1.

[0036] The multiple sets of bending grooves 16 add more side ribs to the I-shaped steel 1 itself. The increase in the number of side ribs improves the bending resistance of the I-shaped steel 1 in the horizontal extension direction. Furthermore, the setting of the bending reinforcement ribs 17 not only improves the bending resistance of the I-shaped steel 1, but also improves the bending strength of the two side plates of the I-shaped steel 1 and the plate connection between the two side plates of the I-shaped steel 1.

[0037] Example 3

[0038] See attached document Figure 3 , Figure 5 , Figure 7 as well as Figure 9 , Figure 12 , Figure 13 , on the basis of the second embodiment, in order to improve the anti-bending strength between the I-shaped profiled steels 1 fixed by vertical stacking and welding, a limiting shaft 4 is fixed between two parallel side walls of the reserved groove 2. The limiting shaft 4 is movably inserted into the jack 5. The jack 5 is opened on the surface of the connecting plate 21. The height of the jack 5 is equal to the height of the reserved groove 2. A picking groove 10 is opened at one end of the I-shaped profiled steel 1. There are two groups of picking grooves 10, and the two groups of picking grooves 10 are symmetrically distributed about the reserved groove 2. A screwing groove 11 is opened at the bottom surface of the picking groove 10. The diameter of the screwing groove 11 is smaller than the diameter of the picking groove 10. A screw 12 is screwed in the screwing groove 11. The height of the screw 12 is greater than the height of the screwing groove 11, and the height of the screw 12 is smaller than the sum of the heights of the picking groove 10 and the screwing groove 11. A plurality of finger grooves 13 are opened at one end of the screw 12. A silica gel gasket 14 is fixed on the surface of the finger grooves 13. The silica gel gasket 14 is in a "C"-shaped plate structure. Edge grooves 7 are opened on both sides of the connecting plate 21. A rubber clamping strip 8 is fixed on the surface of the edge grooves 7. The thickness of the rubber clamping strip 8 is greater than the depth of the edge grooves 7. The rubber clamping strip 8 is clamped between the connecting plate 21 and the reserved groove 2.

[0039] Attached Figure 1 As shown, the connecting plate 21 is folded in the reserved groove 2. At this time, the rubber clamping strip 8 is clamped between the connecting plate 21 and the reserved groove 2, that is, the resilience of the rubber clamping strip 8 abuts against the side wall of the reserved groove 2, preventing the connecting plate 21 from rotating around the limiting shaft 4 without external tension in the reserved groove 2. Before hoisting the upper group of I-shaped profiled steels 1, fingers are inserted into the picking groove 10 and grasped at the finger grooves 13, and the screw 12 is screwed upward. After the screw 12 protrudes from the top surface of the I-shaped profiled steel 1, the upper group of I-shaped profiled steels 1 is hoisted above the lower group of I-shaped profiled steels 1. The positioning jack 15 at the bottom of the upper group of I-shaped profiled steels 1 is sleeved on the screw 12 at the top of the lower group of I-shaped profiled steels 1, realizing the limit when the two groups of I-shaped profiled steels 1 are vertically stacked. Then, fingers are inserted into the second reserved hole 6, and the connecting plate 21 is rotated upward by 180° around the limiting shaft 4. At this time, the connecting plate 21 is in the reserved groove 2 at the bottom of the upper I-shaped profiled steel 1, and the connecting plates 21 on both sides of the lower I-shaped profiled steel 1 are pushed into the corresponding reserved grooves 2. After the bolt 9 passes through the second reserved holes 6 on the surfaces of the two connecting plates 21 and the first reserved holes 3 on the surface of the upper I-shaped profiled steel 1, the bolt 9 is tightened, realizing the fixation of the two groups of I-shaped profiled steels 1. And the existence of the screw 12 improves the anti-bending strength at the welding joint after the two groups of I-shaped profiled steels 1 are welded.

[0040] Example 4

[0041] Refer to attached Figure 10 And Figure 11Based on Embodiment 3, in order to improve the bending resistance of the horizontally placed I-shaped steel 1 when stacked, overlapping grooves 18 and supporting grooves 19 are respectively provided on both sides of the I-shaped steel 1. There are two overlapping grooves 18 and two supporting grooves 19. The two overlapping grooves 18 are respectively distributed on the two parallel side plates of the I-shaped steel 1. The supporting grooves 19 and overlapping grooves 18 correspond one-to-one. The overlapping grooves 18 and supporting grooves 19 are symmetrically distributed about the side plates of the I-shaped steel 1. A rubber pad 20 is fixed on the surface of the supporting groove 19. The rubber pad 20 has an "L" shaped plate structure. After the two sets of I-shaped steel 1 are stacked horizontally, the two overlapping grooves 18 of one set of I-shaped steel 1 are respectively inserted into the supporting grooves 19 of the other set of I-shaped steel 1, and the side plates of one set of I-shaped steel 1 overlap on the rubber pad 20 of the other set of I-shaped steel 1.

[0042] When multiple sets of I-beams shaped steel 1 are placed for standby, or when multiple sets of I-beams shaped steel 1 are stacked for transportation and turnover, the stacking state of two I-beams shaped steel 1 is as shown in the attached figure. Figure 10 As shown, at this time, the two side plates of the upper I-shaped steel 1 press on the two rubber pads 20 on the top of the lower I-shaped steel 1, and the two side plates of the upper I-shaped steel 1 are limited by the two support grooves 19 of the lower I-shaped steel 1, which facilitates the alignment of multiple I-shaped steel 1 when stacked, thereby avoiding uneven force caused by the skew of multiple sets of I-shaped steel 1 when placed flat, and thus avoiding the bending problem caused by the skew.

[0043] Example 6

[0044] A method for using a bending-resistant cold-drawn special-shaped steel column specifically includes the following steps:

[0045] When multiple sets of I-beams shaped steel 1 are placed for standby, or when multiple sets of I-beams shaped steel 1 are stacked for transportation and turnover, the stacking state of two I-beams shaped steel 1 is as shown in the attached figure. Figure 10 As shown, at this time, the two side plates of the upper I-shaped steel 1 press on the two rubber pads 20 on the top of the lower I-shaped steel 1, and the two side plates of the upper I-shaped steel 1 are limited by the two support grooves 19 of the lower I-shaped steel 1, which facilitates the alignment of multiple I-shaped steel 1 when stacked, thereby avoiding uneven force caused by the skew of multiple sets of I-shaped steel 1 when placed flat, and thus avoiding the bending problem caused by the skew.

[0046] When reinforcing the weld joint of two vertically stacked I-shaped steel sections 1, additional... Figure 1The connecting plate 21 shown is folded inside the reserved groove 2. At this time, the rubber clamp 8 is clamped between the connecting plate 21 and the reserved groove 2. That is, the rebound force of the rubber clamp 8 abuts against the side wall of the reserved groove 2, preventing the connecting plate 21 from rotating around the limiting shaft 4 when there is no external tension in the reserved groove 2. Before hoisting the upper set of I-shaped special steel 1, insert your finger into the picking groove 10 and pick it at the finger groove 13. Twist the screw 12 upward. After the screw 12 protrudes from the top surface of the I-shaped special steel 1, hoist the upper set of I-shaped special steel 1 above the lower set of I-shaped special steel 1. The positioning insertion hole 15 at the bottom of the upper set of I-shaped special steel 1 is fitted onto the screw 12 at the top of the lower set of I-shaped special steel 1, realizing the two When the I-shaped steel 1 is stacked vertically, the limit is set. Then, a finger is inserted into the second reserved hole 6, and the connecting plate 21 is rotated 180° upward around the limit axis 4. At this time, the connecting plate 21 is in the reserved groove 2 at the bottom of the upper I-shaped steel 1. The connecting plates 21 on both sides of the lower I-shaped steel 1 are pushed into the corresponding reserved groove 2. After the bolt 9 passes through the second reserved hole 6 on the surface of the two sets of connecting plates 21 and the first reserved hole 3 on the surface of the upper I-shaped steel 1, the bolt 9 is tightened to fix the two sets of I-shaped steel 1. Then, the splice of the two I-shaped steel 1 is welded and reinforced. The presence of the screw 12 increases the bending strength of the two sets of I-shaped steel 1 at the weld after welding.

[0047] 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. A bending-resistant cold-drawn special-shaped steel column, comprising I-shaped special-shaped steel (1), characterized in that: Both ends of the I-shaped profiled steel (1) are provided with reserved grooves (2). A first reserved hole (3) is provided on the surface of one set of reserved grooves (2). A connecting plate (21) is rotatably connected inside the other set of reserved grooves (2). A second reserved hole (6) is provided on the surface of the connecting plate (21). One end of the I-shaped profiled steel (1) is provided with a screw rod (12). A positioning insertion hole (15) is provided at the other end of the I-shaped profiled steel (1). There are two sets of I-shaped profiled steels (1). When the two sets of I-shaped profiled steels (1) are vertically stacked, the screw rod (12) at one end of one set of I-shaped profiled steels (1) is inserted into the positioning insertion hole (15) at the other end of the other set of I-shaped profiled steels (1), and the connecting plate (21) on the surface of one set of I-shaped profiled steels (1) is inserted into the reserved groove (2) of the other set of I-shaped profiled steels (1). The two sets of I-shaped profiled steels (1) are fixed by bolts (9), and the bolts (9) penetrate through the first reserved hole (3) and the second reserved hole (6); A limiting shaft (4) is fixed between two parallel side walls of the reserved groove (2). The limiting shaft (4) is movably inserted into a jack (5). The jack (5) is provided on the surface of the connecting plate (21). The height of the jack (5) is equal to the height of the reserved groove (2); Side grooves (7) are provided on both sides of the connecting plate (21). Rubber clamping strips (8) are fixed on the surfaces of the side grooves (7). The thickness of the rubber clamping strips (8) is greater than the depth of the side grooves (7). The rubber clamping strips (8) are clamped between the connecting plate (21) and the reserved groove (2); A picking groove (10) is provided at one end of the I-shaped profiled steel (1). There are two sets of picking grooves (10), and the two sets of picking grooves (10) are symmetrically distributed with respect to the reserved groove (2). A screwing groove (11) is provided at the bottom of the picking groove (10). The diameter of the screwing groove (11) is smaller than the diameter of the picking groove (10). The screw rod (12) is screwed into the screwing groove (11). The height of the screw rod (12) is greater than the height of the screwing groove (11), and the height of the screw rod (12) is less than the sum of the heights of the picking groove (10) and the screwing groove (11); Multiple finger grooves (13) are provided at one end of the screw rod (12). A silica gel gasket (14) is fixed on the surface of the finger grooves (13). The silica gel gasket (14) has a "匚”-shaped plate structure.

2. The bending-resistant cold-drawn special-shaped steel column according to claim 1, characterized in that: The I-shaped profiled steel (1) has an "I”-shaped plate structure. Each set of reserved grooves (2) has two, and the two reserved grooves (2) are symmetrically distributed with respect to the I-shaped profiled steel (1). Multiple anti-folding grooves (16) are provided on the surfaces of two parallel side plates of the I-shaped profiled steel (1). The height of the anti-folding grooves (16) is equal to the height of the I-shaped profiled steel (1).

3. The bending-resistant cold-drawn special-shaped steel column according to claim 1, characterized in that: Anti-folding reinforcing ribs (17) are integrally formed at the corners of the plate body of the I-shaped profiled steel (1).

4. The bending-resistant cold-drawn special-shaped steel column according to claim 1, characterized in that: The I-shaped special steel (1) has two overlapping grooves (18) and two supporting grooves (19) on its two sides respectively. The two overlapping grooves (18) are distributed on two parallel side plates of the I-shaped special steel (1). The supporting grooves (19) and the overlapping grooves (18) correspond one to one. The overlapping grooves (18) and the supporting grooves (19) are symmetrically distributed about the side plates of the I-shaped special steel (1).

5. A bending-resistant cold-drawn special-shaped steel column according to claim 4, characterized in that: The surface of the support groove (19) is fixed with a rubber pad (20). The rubber pad (20) has an "L" shaped plate structure. After the two sets of I-shaped steel (1) are stacked horizontally, the two overlapping grooves (18) of one set of I-shaped steel (1) are respectively inserted into the support groove (19) of the other set of I-shaped steel (1), and the side plate of one set of I-shaped steel (1) overlaps on the rubber pad (20) of the other set of I-shaped steel (1).

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