Corrosion-resistant and deformation-resistant cold-drawn steel

Abstract

This invention discloses a corrosion-resistant and deformation-resistant cold-drawn steel profile, comprising a cold-drawn steel body with a 2mm thick PE polymer material thermoplasticized on its outer surface for corrosion resistance. By pre-setting overlapping end grooves and installation slots at the ends of the cold-drawn steel body, when two adjacent sets of cold-drawn steel bodies need to be assembled, the overlapping block at one end of one set of cold-drawn steel bodies is aligned with the overlapping end groove at the other end of the other set for positioning and insertion, completing the rapid assembly between the two sets of cold-drawn steel bodies. The lower inclined surface of the overlapping block abuts against the fitting rubber sheet to avoid damage to the overlapping block. A pressure-distributing component set inside the extrusion cavity increases the supporting strength of the cold-drawn steel body, solving the problem of bending deformation easily caused by applying pressure to the upper end and sides of existing C-shaped steel bodies. This enhances the deformation resistance and increases the strength of the cold-drawn steel profile.

Description

Technical Field

[0001] This invention belongs to the field of cold-drawn steel technology, specifically relating to a corrosion-resistant and deformation-resistant cold-drawn steel. Background Technology

[0002] Cold-formed steel has advantages such as high structural strength, environmental friendliness, large span, long service life, and relatively economical price. As a type of cold-formed steel, C-shaped steel is often used in building construction. This means that this type of steel has advantages as a building material. It not only has strong strength but also high stability. In addition, it can be combined into lightweight roof trusses, brackets, and other building components to meet different usage requirements.

[0003] In the existing technology, the lower end of the C-shaped steel is folded inward, and multiple connecting holes are added to the upper end of the C-shaped steel. The adjacent steel sections are fixed by welding or bolts to satisfy the fixing of multiple sets of C-shaped steel.

[0004] However, if a slight misalignment occurs when multiple sets of steel sections are joined, the steel section will break and deform when subjected to external pressure. When the existing C-shaped steel is subjected to external force, the upper end and both sides of the C-shaped steel body are prone to bending deformation.

[0005] Therefore, we propose a corrosion-resistant and deformation-resistant cold-drawn steel to solve the problem that the upper end and both sides of the existing C-shaped steel body are prone to bending deformation when pressure is increased. This can enhance the deformation resistance of the cold-drawn steel and improve its strength. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a corrosion-resistant and deformation-resistant cold-drawn steel profile with advantages such as deformation resistance and high strength.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a corrosion-resistant and deformation-resistant cold-drawn steel profile, comprising a cold-drawn steel profile body, wherein a 2mm thick PE polymer material is thermoplasticized on the outer surface of the cold-drawn steel profile body for corrosion resistance; one end of the cold-drawn steel profile body is provided with an overlapping end groove, and the other end of the cold-drawn steel profile body away from the overlapping end groove is provided with an auxiliary limiting mounting groove; a top groove is provided between the mounting groove and the overlapping end groove, and the mounting groove and the overlapping end groove are symmetrically distributed about the central axis of the top groove; an annular groove is sequentially provided on the outer side of the top groove; an overlapping block is provided on the inner surface of the mounting groove; two sets of cold-drawn steel profile bodies are provided; when the two sets of cold-drawn steel profile bodies are horizontally assembled, the overlapping block at one end of one set of cold-drawn steel profile bodies is inserted into the overlapping end groove at the other end of the other set of cold-drawn steel profile bodies; an inner frame plate is installed on the inner surface of the cold-drawn steel profile body.

[0008] Preferably, two sets of the overlapping blocks are provided, and the overlapping blocks are symmetrically distributed about the central axis of the cold-drawn steel section body. The overlapping blocks are integrally in a "T"-shaped plate structure. A reserved insertion hole is provided on the inner wall of the upper end of the overlapping block. Two sets of the reserved insertion holes are provided, and the reserved insertion holes are symmetrically distributed about the central axis of the overlapping block.

[0009] Preferably, a fitting rubber sheet is additionally provided on the inner wall of the overlapping end groove. The lower surface of the fitting rubber sheet is fixedly connected to the inner wall of the overlapping end groove. The inner surface of the fitting rubber sheet is in movable abutment with the lower inclined surface of the overlapping block at the other end of the other cold-drawn steel section body.

[0010] Preferably, an inclined surface is provided on the lower surface of the overlapping block, and two planes distributed in parallel are provided on the outer surfaces on both sides of the overlapping block. Side wing strips are additionally fixedly provided outside the planes.

[0011] Preferably, the outer surface of one set of the overlapping blocks is movably inserted into the inner wall of one end of the other cold-drawn steel section body where the overlapping end groove is provided. Side insertion grooves are preset on the inner walls on both sides of the overlapping end groove. The side insertion grooves correspond to the side wing strips one by one, and the inner wall of the side insertion groove is in sliding insertion with the outer surface of the side wing strip. A compensation block is additionally fixedly provided at the lower end inside the overlapping block.

[0012] Preferably, a through groove is provided on the inner wall of the compensation block, and the compensation block is integrally in a "convex"-shaped block structure. Ventilation round holes are symmetrically provided on the upper surface of the compensation block. Bolts are connected through the inner walls of the ventilation round holes. Four sets of the bolts are provided. The outer surface of the bolts sequentially passes through the inner walls of the reserved insertion holes and the through groove and is threadedly connected with the inner walls thereof. A labor-saving component is provided at the upper end of the bolts.

[0013] Preferably, the top groove provided between the compensation block and the overlapping end groove is located at the central position of the upper end of the cold-drawn steel section body. A rigid compression-resistant groove frame plate is fixedly installed on the inner wall of the top groove. The rigid compression-resistant groove frame plate is integrally in a "square"-shaped block structure. A folded compression-resistant strip is fixedly installed on the inner surface of the rigid compression-resistant groove frame plate. A triangular through groove is provided between the gap between the folded compression-resistant strip and the rigid compression-resistant groove frame plate.

[0014] Preferably, the outer surface on the upper side of the inner frame plate is adaptively fitted with the inner surface of the cold-drawn steel section body. Annular grooves II are equidistantly provided at the upper end of the inner frame plate. An extrusion cavity is provided on the inner surface of the inner frame plate. A pressure-dividing component is provided inside the extrusion cavity.

[0015] Preferably, two sets of folding flanges are additionally fixedly provided at the lower end of the cold-drawn steel section body, and the folding flanges are mirror-image distributed about the central axis of the cold-drawn steel section body.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention proposes a corrosion-resistant and deformation-resistant cold-drawn steel profile. Overlapping end grooves and mounting slots are pre-set at the ends of the cold-drawn steel profile. When two adjacent sets of cold-drawn steel profiles need to be assembled, the overlapping block at one end of one set of cold-drawn steel profiles is aligned with the overlapping end groove at the other end of the other set for positioning and insertion, completing the rapid assembly between the two sets of cold-drawn steel profiles. The lower inclined surface of the overlapping block abuts against the fitting rubber sheet, preventing damage to the overlapping block. A pressure-distributing component set inside the extrusion cavity increases the support strength of the cold-drawn steel profile, solving the problem of bending deformation easily caused by applying pressure to the upper end and sides of existing C-shaped steel profiles. This enhances the deformation resistance and increases the strength of the cold-drawn steel profile. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the two sets of cold-drawn steel bodies of the present invention;

[0021] Figure 4 This is a side view sectional structural diagram of a set of cold-drawn steel bodies according to the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified structural diagram at point A;

[0023] Figure 6 This is a schematic diagram showing the disassembled structure of the cold-drawn steel body and the overlapping block of the present invention;

[0024] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the cold-drawn steel body when disassembling the cold-drawn steel body and the lap block of the present invention;

[0025] Figure 8 This is an exploded structural diagram of the rigid compression-resistant groove frame plate and the compensation block of the present invention;

[0026] Figure 9 This is a cross-sectional structural schematic diagram of the rigid compression-resistant groove frame plate of the present invention;

[0027] Figure 10 This is a partial three-dimensional cross-sectional structural diagram of the inner frame plate of the present invention;

[0028] Figure 11 This is a schematic diagram of the bolt structure of the present invention.

[0029] In the diagram: 1. Cold-drawn steel body; 2. Annular groove one; 3. Overlap end groove; 4. Installation groove; 5. Overlap block; 51. Reserved insertion hole; 6. Bolt; 61. Auxiliary slot; 62. Screwdriver slot; 7. Side wing strip; 8. Side groove; 9. Adhesive rubber sheet; 10. Compensation block; 101. Through groove; 11. Ventilation round hole; 12. Top groove; 13. Rigid compression-resistant groove frame plate; 14. Folded compression-resistant strip; 141. Triangular through groove; 15. Inner frame plate; 16. Annular groove two; 17. Extrusion cavity; 18. Diagonal brace plate; 19. Parallel support connecting rod; 20. Folded edge. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] Please see Figures 1 to 11This invention provides a technical solution: a corrosion-resistant and deformation-resistant cold-drawn steel profile, comprising a cold-drawn steel body 1, with a 2mm thick PE polymer material thermoplasticized on the outer surface of the cold-drawn steel body 1 for corrosion resistance. One end of the cold-drawn steel body 1 has an overlapping end groove 3, and the end of the cold-drawn steel body 1 away from the overlapping end groove 3 has an auxiliary limiting mounting groove 4. A top groove 12 is provided between the mounting groove 4 and the overlapping end groove 3, and the mounting groove 4 and the overlapping end groove 3 are symmetrically distributed about the central axis of the top groove 12. Annular grooves 2 are sequentially formed on the outer side of the top groove 12, and overlapping blocks 5 are provided on the inner surface of the mounting groove 4. The cold-drawn steel body 1 has two sets. When the two sets of cold-drawn steel bodies 1 are horizontally assembled, the overlapping block 5 at one end of one set of cold-drawn steel bodies 1 is inserted into the overlapping end groove 3 at the other end of the other set of cold-drawn steel bodies 1. An inner frame plate 15 is installed on the inner surface of the cold-drawn steel body 1. The overlapping blocks 5 are set in two sets and are symmetrically distributed about the central axis of the cold-drawn steel body 1. The overlapping blocks 5 have a "T" shaped plate structure. The upper inner wall of the overlapping block 5 has a reserved insertion hole 51. There are two sets of reserved insertion holes 51 and they are symmetrically distributed about the central axis of the overlapping block 5. A bonding rubber sheet 9 is added to the inner wall of the overlapping end groove 3 for bonding. The lower surface of the rubber sheet 9 is fixedly connected to the inner wall of the overlapping end groove 3. The inner surface of the rubber sheet 9 is in contact with the lower inclined surface of the overlapping block 5 at the other end of another set of cold-drawn steel bodies 1. The lower surface of the overlapping block 5 is provided with an inclined surface, and two parallel planes are provided on the outer surfaces of both sides of the overlapping block 5. Side wing strips 7 are fixedly added to the outside of the planes. The overlapping end groove 3 and the installation groove 4 are respectively preset at the end position of the cold-drawn steel body 1. When it is necessary to assemble and connect two adjacent sets of cold-drawn steel bodies 1, the overlapping block 5 at one end of one set of cold-drawn steel bodies 1 is aligned with the overlapping end groove 3 at the other end of the other set of cold-drawn steel bodies 1. Positioning and insertion are performed to complete the rapid assembly between the two sets of cold-drawn steel bodies 1. The lower inclined surface of the overlapping block 5 abuts against the rubber sheet 9 to avoid damage to the overlapping block 5. At this time, the side wing strips 7 on both sides of the overlapping block 5 correspond one-to-one with the inner wall of the side groove 8, which can achieve precise positioning of the two sets of cold-drawn steel bodies 1 and prevent displacement during use. The pressure-distributing component set inside the extrusion cavity 17 is used to increase the support strength of the cold-drawn steel body 1, which solves the problem that the upper end and both sides of the existing C-shaped steel body are prone to bending deformation when pressure is increased. It can enhance the deformation resistance of the cold-drawn steel and improve its strength.

[0033] Example 2

[0034] See attached document Figure 1-11, on the basis of the first embodiment, in order to achieve the positioning and assembly of adjacent two groups of cold-drawn steel body 1, the outer surface of one group of lapping blocks 5 is movably embedded in the inner wall of one end of the cold-drawn steel body 1 provided with a lapping end groove 3. Side grooves 8 are preset on the inner walls on both sides of the lapping end groove 3. The side grooves 8 correspond to the side wing strips 7 one by one, and the inner wall of the side groove 8 is slidably embedded with the outer surface of the side wing strip 7. A compensation block 10 is fixedly added to the lower end inside the lapping block 5. A through groove 101 is opened on the inner wall of the compensation block 10, and the compensation block 10 is integrally in a "convex" block structure. Ventilation round holes 11 are symmetrically opened on the upper side surface of the compensation block 10. A bolt 6 is connected through the inner wall of the ventilation round hole 11. There are four groups of bolts 6. The outer surface of the bolt 6 sequentially passes through the inner wall of the reserved insertion hole 51 and the through groove 101 and is threadedly connected with the inner wall thereof. A labor-saving component is provided at the upper end of the bolt 6;

[0035] By adding a compensation block 10 between the two groups of lapping blocks 5 to compensate for the end position of the cold-drawn steel body 1 far from the lapping end groove 3. The reason for such setting is to prevent the rigid compression groove frame plate 13 and the triangular through groove 141 of the other cold-drawn steel body 1 from being exposed outside and prevent corrosion. With the opening of the through groove 101 corresponding to the surface of the compensation block 10, the through groove 101 and the triangular through groove 141 preset between one side folded compression strip 14 and the rigid compression groove frame plate 13 are on the same horizontal line, ensuring that the external air can enter the top groove 12 through the through groove 101 and penetrate through multiple triangular through grooves 141, realizing the ventilation of the cold-drawn steel body 1, avoiding the airtightness of the steel sections when stacked, and further solving the problem that the upper end and both sides of the existing C-shaped steel body are prone to bending deformation when increasing pressure, enhancing the anti-deformation effect of the cold-drawn steel and improving the strength.

[0036] Embodiment Three

[0037] Refer to the appendix Figure 1-11 , on the basis of the second embodiment, in order to improve the compressive and anti-deformation effects at the top position of the cold-drawn steel body 1, the top groove 12 opened between the compensation block 10 and the lapping end groove 3 is located at the center position of the upper end of the cold-drawn steel body 1. A rigid compression groove frame plate 13 is fixedly installed on the inner wall of the top groove 12. The rigid compression groove frame plate 13 is integrally in a "square" block structure. A folded compression strip 14 is fixedly installed on the inner surface of the rigid compression groove frame plate 13. A triangular through groove 141 is provided between the gap of the folded compression strip 14 and the rigid compression groove frame plate 13. The upper outer surface of the inner frame plate 15 is adaptively fitted with the inner surface of the cold-drawn steel body 1. Annular grooves two 16 are equidistantly opened at the upper end of the inner frame plate 15. An extrusion cavity 17 is provided on the inner surface of the inner frame plate 15. A pressure-dividing component is provided inside the extrusion cavity 17. Two groups of folding flanges 20 are fixedly added to the lower end of the cold-drawn steel body 1, and the folding flanges 20 are mirror-symmetrically distributed about the central axis of the cold-drawn steel body 1;

[0038] By arranging multiple sets of rigid compression-resistant groove frame plates 13 at equal intervals inside the top groove 12, the inner wall of the excavated top groove 12 is reinforced and supported. The spacing between two adjacent sets of rigid compression-resistant groove frame plates 13 is reserved to provide space for the passage of the annular groove 2. The folded compression-resistant strip 14 adopts the stable support principle of triangle, which avoids external force deformation of the rigid compression-resistant groove frame plate 13 and improves the support strength of the top groove 12. In addition, an inner frame plate 15 is added to the inner side of the cold-drawn steel body 1 to strengthen the support of the side and top of the cold-drawn steel body 1. This further solves the problem that the upper end and sides of the existing C-shaped steel body are prone to bending deformation when pressure is increased, which can enhance the deformation resistance of the cold-drawn steel and improve its strength.

[0039] Example 4

[0040] See attached document Figure 1-11 Based on Embodiment 3, this embodiment adds a labor-saving component:

[0041] The labor-saving component includes an auxiliary slot 61 and a screwdriver slot 62. The auxiliary slot 61 is formed on the upper outer surface of the bolt 6. The auxiliary slot 61 is a recessed hexagonal groove. The inner surface of the auxiliary slot 61 is provided with a screwdriver slot 62. The screwdriver slot 62 is a recessed "+" shaped groove. The depth of the screwdriver slot 62 is greater than the opening depth of the auxiliary slot 61.

[0042] By adding a labor-saving component, when the bolt 6 is connected and fixed between the pre-reserved insertion hole 51 and the cold-drawn steel body 1, the user can insert a wrench into the auxiliary slot 61 and insert a screwdriver into the screwdriver slot 62. This allows for labor-saving and quick assembly of the overlapping block 5, further solving the problem that the upper end and sides of the existing C-shaped steel body are prone to bending and deformation when pressure is applied. This can enhance the deformation resistance of the cold-drawn steel and improve its strength.

[0043] Example 5

[0044] See attached document Figure 1-11 Based on Example 4, this example adds a voltage divider component:

[0045] The pressure dividing assembly includes a bracing plate 18, the outer surface of which is fixedly connected to the inner wall of the extrusion cavity 17. The bracing plate 18 is inclined at a 45° angle and is arranged in an equidistant array. Parallel support rods 19 are fixedly added to the inner side of two adjacent sets of bracing plates 18, and there are two parallel support rods 19 in each set. The parallel support rods 19 are symmetrically distributed about the central axis of the bracing plate 18.

[0046] By adding a pressure-dividing component, an extrusion cavity 17 is added inside the inner frame plate 15, and the diagonal bracing plate 18 and parallel support rods 19 are arranged in an array on the inner side of the extrusion cavity 17 to enhance the reinforcement support of the inner frame plate 15. When subjected to external pressure, the inner frame plate 15 can provide stress support for the cold-drawn steel body 1, further solving the problem that the upper end and both sides of the existing C-shaped steel body are prone to bending deformation when pressure is increased. This can enhance the deformation resistance of the cold-drawn steel and improve its strength.

[0047] Working principle and usage process of this invention:

[0048] First, overlapping end grooves 3 and mounting grooves 4 are pre-set at the ends of the cold-drawn steel body 1. When it is necessary to assemble and connect two adjacent sets of cold-drawn steel bodies 1, the overlapping block 5 at one end of one set of cold-drawn steel bodies 1 is aligned with the overlapping end groove 3 at the other end of the other set of cold-drawn steel bodies 1 for positioning and insertion, thus completing the rapid assembly between the two sets of cold-drawn steel bodies 1. The lower inclined surface of the overlapping block 5 abuts against the rubber sheet 9 to avoid damage to the overlapping block 5. At this time, the side wing strips 7 on both sides of the overlapping block 5 correspond one-to-one with the inner wall of the side groove 8, which can achieve precise positioning of the two sets of cold-drawn steel bodies 1. At this time, a set of compensation blocks 10 is added between the two sets of overlapping blocks 5 to compensate for the end position of the cold-drawn steel body 1 that is far away from the overlapping end groove 3. The reason for this setting is to avoid the rigid compressive strength groove frame plate 13 and the triangular through groove 141 of the other set of cold-drawn steel bodies 1 being exposed to the outside, preventing corrosion, and cooperating with the compensation. The surface of block 10 corresponds to the opening of the through groove 101. The through groove 101 and the pre-set triangular through groove 141 between the side folded anti-compression strip 14 and the rigid anti-compression groove frame plate 13 are on the same horizontal line, ensuring that external air can enter the top groove 12 through the through groove 101 and pass through multiple sets of triangular through grooves 141, which can realize ventilation of the cold-drawn steel body 1 and avoid the steel from being sealed when stacked. Furthermore, multiple sets of rigid anti-compression groove frame plates 13 are arranged at equal intervals inside the top groove 12. The inner wall of the excavated top trench 12 is reinforced with top support, and the spacing between the two adjacent sets of rigid compression-resistant groove frame plates 13 is reserved to provide space for the passage of the annular groove 12. The folded compression-resistant strip 14 adopts the stable support principle of triangle to avoid external force deformation of the rigid compression-resistant groove frame plate 13. In addition, an extrusion cavity 17 is added inside the inner frame plate 15, and the diagonal bracing plate 18 and parallel support connecting rod 19 are arranged in an array on the inner side of the extrusion cavity 17 to enhance the reinforcement support of the inner frame plate 15.

[0049] 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 corrosion-resistant and deformation-resistant cold-drawn steel profile, comprising a cold-drawn steel profile body (1), characterized in that: The outer surface of the cold-drawn steel section body (1) is thermoplastically coated with a PE polymer material with a thickness of 2 mm for corrosion resistance of the cold-drawn steel section. One end of the cold-drawn steel section body (1) is provided with a lapping end groove (3). An installation embedding groove (4) for auxiliary limiting is provided at one end of the cold-drawn steel section body (1) away from the lapping end groove (3). A top groove (12) is provided between the installation embedding groove (4) and the lapping end groove (3). The installation embedding groove (4) and the lapping end groove (3) are symmetrically distributed about the central axis of the top groove (12). An annular groove one (2) is sequentially provided on the outer side of the top groove (12). A lapping block (5) is provided on the inner surface of the installation embedding groove (4). There are two groups of the cold-drawn steel section bodies (1). When the two groups of cold-drawn steel section bodies (1) are horizontally assembled, the lapping block (5) at one end of one group of cold-drawn steel section bodies (1) is inserted into the lapping end groove (3) at the other end of the other group of cold-drawn steel section bodies (1). An inner frame plate (15) is installed on the inner side surface of the cold-drawn steel section body (1); There are two groups of the lapping blocks (5). The lapping blocks (5) are symmetrically distributed about the central axis of the cold-drawn steel section body (1). The lapping block (5) is integrally in a "T"-shaped plate structure. Reserved jack holes (51) are provided on the inner wall of the upper end of the lapping block (5). There are two groups of the reserved jack holes (51). The reserved jack holes (51) are symmetrically distributed about the central axis of the lapping block (5); An inclined surface is provided on the lower side surface of the lapping block (5). And two planes parallel to each other are provided on the outer side surfaces of both sides of the lapping block (5). Side wing strips (7) are fixedly added outside the planes; The outer surface of one group of lapping blocks (5) is movably embedded in the inner wall of one end of the other group of cold-drawn steel section bodies (1) provided with the lapping end groove (3). Side embedding grooves (8) are preset on the inner walls of both sides of the lapping end groove (3). The side embedding grooves (8) correspond to the side wing strips (7) one by one. And the inner wall of the side embedding groove (8) is slidably embedded with the outer surface of the side wing strip (7). A compensation block (10) is fixedly added at the lower end inside the lapping block (5); Ventilation round holes (11) are provided on the inner walls of both sides of the compensation block (10). And the compensation block (10) is integrally in a "convex"-shaped block structure. Through grooves (101) are symmetrically provided at both ends of the upper surface of the compensation block (10). Bolts (6) are connected through the inner walls of the through grooves (101). There are four groups of the bolts (6). The outer surface of the bolt (6) sequentially penetrates through the inner walls of the reserved jack hole (51) and the through groove (101) and is threadedly connected with the inner walls thereof. A labor-saving component is provided at the upper end of the bolt (6); The top groove (12) opened between the compensation block (10) and the lapping end groove (3) is located at the center position of the upper end of the cold-drawn steel body (1). A rigid compressive groove frame plate (13) is fixedly installed on the inner wall of the top groove (12). The rigid compressive groove frame plate (13) is integrally in a "mouth"-shaped block structure. A folded compressive strip (14) is fixedly installed on the inner surface of the rigid compressive groove frame plate (13). A triangular through groove (141) is arranged between the gap between the folded compressive strip (14) and the rigid compressive groove frame plate (13).

2. The corrosion-resistant and deformation-resistant cold-drawn steel according to claim 1, characterized in that: A fitting rubber sheet (9) is additionally arranged on the inner wall of the lapping end groove (3). The lower surface of the fitting rubber sheet (9) is fixedly connected to the inner wall of the lapping end groove (3). The inner side surface of the fitting rubber sheet (9) is movably abutted against the lower inclined surface of the lapping block (5) at the other end of another group of cold-drawn steel bodies (1).

3. The corrosion-resistant and deformation-resistant cold-drawn steel according to claim 1, characterized in that: The outer surface of the upper side of the inner frame plate (15) is adaptively fitted to the inner surface of the cold-drawn steel body (1). Annular grooves II (16) are equidistantly opened at the upper end of the inner frame plate (15). An extrusion cavity (17) is arranged on the inner surface of the inner frame plate (15). A voltage-dividing component is arranged inside the extrusion cavity (17).

4. The corrosion-resistant and deformation-resistant cold-drawn steel according to claim 3, characterized in that: Two groups of folding flanges (20) are fixedly added to the lower end of the cold-drawn steel body (1), and the two groups of folding flanges (20) are mirror-symmetrically distributed about the central axis of the cold-drawn steel body (1).

Images