High-strength L-shaped steel and production process

Abstract

The invention discloses high-strength L-shaped steel and a production process, and relates to the related field of L-shaped steel, the high-strength L-shaped steel comprises an L-shaped steel body, a butt joint part is fixedly mounted at the right end of the L-shaped steel body, the butt joint part is fixed to an insertion groove in the adjacent L-shaped steel body in an inserted mode, and an outer fixing plate is arranged outside the butt joint position of the L-shaped steel body in an attached mode; embedding grooves are symmetrically formed in the ends of the two sides of the L-shaped steel body, connecting pieces are connected into the embedding grooves, and grooves are formed in the front sides of the two ends of the L-shaped steel body and the top of the bottom face of the L-shaped steel body. According to the high-strength L-shaped steel and the production technology, in the using process, the L-shaped steel is stably supported and restrained in all directions through multi-directional connection and fixation, loads can be better dispersed through all-directional connection, local stress concentration is reduced, and therefore the firmness of the connecting position is greatly enhanced, the connecting position can bear larger loads, and the service life of the connecting position is prolonged. And the anti-fatigue performance of the joint of the L-shaped steel is improved, so that the use strength of the L-shaped steel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to L-shaped steel, and in particular to a high-strength L-shaped steel and a production process. Background Art

[0002] In modern construction, bridges, machinery manufacturing and other industries, the requirements for the strength and stability of structural materials are becoming increasingly higher. L-shaped steel, as a commonly used profile, is widely used in various engineering structures. However, due to the lack of supporting ribs in the L-shaped design and the large right-angle opening, it is easy to bend. When splicing the ends together, there are often problems such as loose joints and looseness, which seriously affects the stability and safety of the structure. To address the above-mentioned defects, the prior art (Announcement No. CN209443652U, Chinese patent with an announcement date of September 27, 2019) provides an L-shaped steel structure. The trapezoidal web steel plate is used to increase the left and right stress of the web steel plate. At the same time, the steel clamping plate and the clamping groove strip facilitate the user to assemble and splice the left and right sides. The protrusion and the first groove and the second groove are tightly engaged to improve the clamping stability of the L-shaped steel structure, solving the problem that the existing L-shaped steel components are still not strong enough in actual use and have limited assembly and use forms. The L-shaped steel component has the advantages of being not easy to bend and having a variety of assembly and splicing styles, thereby improving the stability of the L-shaped steel structure and the convenience of assembly and installation. Prior art (Announcement No. CN119412414A, Chinese patent with announcement date of 2025-02-11) A reinforced cold-drawn steel and its production process, by providing side grooves at both ends of the cold-drawn steel body, inserting assembly blocks, and then fixing the wing plates to the cold-drawn steel body by bolts, thereby achieving a firm connection between the assembly blocks and the cold-drawn steel body. At the same time, the coordinated connection between the slots and the inserts, as well as the traction limit of the rubber ferrule, further strengthens the firmness of the end-to-end splicing of the cold-drawn steel body, effectively preventing loosening and falling off of the spliced parts. When splicing the reinforced cold-drawn steel, it is only necessary to insert the inserts into the corresponding slots to achieve preliminary pre-limiting. Subsequently, the spliced parts can be quickly fixed by connecting the threaded semi-cylinders and the nuts. This splicing method is simple and quick to operate, reducing the difficulty and cost of installation. During the operation of the above scheme, the connection between the steels is based on the same force direction of the installation orientation, which makes the steel connections have high strength along the installation orientation and weak strength in other orientations. The external forces applied to the steel during use are multi-directional, and there may be weak connection points in certain directions, which makes the strength and durability of the steel insufficient when subjected to large loads or in harsh environments, making it difficult to meet the needs of complex working conditions. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-strength L-shaped steel and a production process to solve the problem of the existing high-strength L-shaped steel proposed in the above background technology. During use, the connection between the steels is based on the same force direction of the installation orientation, so that the steel connection has high strength along the installation orientation and weak strength in other orientations. The external force applied to the steel during use is multi-directional, and there may be weak connection points in certain directions, which makes it difficult to meet the needs of complex working conditions due to insufficient strength and durability of the steel when subjected to large loads or in harsh environments.

[0004] To achieve the above object, the present invention provides the following technical solution: a high-strength L-shaped steel, comprising an L-shaped steel body, wherein a docking portion is fixedly mounted on the right end portion of the L-shaped steel body, the docking portion being plugged and fixed to a slot on an adjacent L-shaped steel body, the slot being provided at the right end portion of the L-shaped steel body; An outer fixing plate is provided on the outside of the joint of the L-shaped steel body, and end plates are integrally installed on the top and bottom of the outer fixing plate, and the end plates are in contact with the top and front side of the L-shaped steel body; The two ends of the L-shaped steel body are symmetrically provided with engaging grooves, and the engaging grooves are connected with connecting pieces, and the connecting pieces lock and reinforce the joints of the L-shaped steel body; Grooves are provided on the front sides and bottom tops of both ends of the L-shaped steel body, and protrusions are inserted into the grooves. The protrusions are fixed to the top and bottom of the reinforcing support. The reinforcing support spans between the joints of the L-shaped steel body, and a triangular support area is formed at the joints between the reinforcing support and the L-shaped steel body.

[0005] Furthermore, the docking part and the slot are both configured as rectangular structures, and a mounting hole is provided through the docking part, and the upper and lower sides of the mounting hole coincide with the position of the first through hole, which is provided through the vertical and horizontal parts at both ends of the L-shaped steel body.

[0006] Furthermore, the horizontal and vertical portions of the outer fixing plate are each provided with a second through hole, and the positions of the second through hole correspond one-to-one to those of the first through hole and the mounting hole. Bolts are passed through the first through hole, the mounting hole, and the second through hole, and nuts are threadedly connected to the top and bottom of the bolts. After the nuts are tightened, they are countersunk in the second through hole.

[0007] Furthermore, a connecting rail is fixed to the side of the upper end plate of the outer fixing plate, and the connecting rail is slidably connected to the slide groove. The slide groove is symmetrically opened on the front side of the horizontal part on both sides of the L-shaped steel body and the top of the vertical part. The L-shaped steel body forms a mortise and tenon connection fixing structure through the connecting rail and the slide groove, and the connecting rail and the slide groove are both set to a dovetail structure.

[0008] Furthermore, the fitting groove at the end of the L-shaped steel body is set to a "T"-shaped structure, the fitting grooves on the opposite sides of the L-shaped steel body constitute a complete connecting groove, and the connecting groove is connected with a connecting piece in a concave and convex manner, and the connecting piece is set to an "I"-shaped structure.

[0009] Furthermore, a rotation groove is provided inside the horizontal part and the vertical part at the right end of the L-shaped steel body, a rotation rod is rotatably connected in the rotation groove, a pull rope is connected to the outside of the rotation rod, and an insertion rod is connected to the end of the pull rope. The insertion rod passes through horizontally and is slidably connected to the fitting groove on the right side of the L-shaped steel body, and a spring is installed between the insertion rod and the outer wall of the fitting groove.

[0010] Furthermore, the outer end of the insertion rod is engaged with the positioning hole, and the positioning hole is opened on the side of the connecting piece.

[0011] Furthermore, half of the protrusion on the reinforcing support is inserted into the groove of the left L-shaped steel body, and the other half of the protrusion is inserted into the groove of the right L-shaped steel body.

[0012] A high-strength L-shaped steel and a production process of the high-strength L-shaped steel are also disclosed. The specific method and steps are as follows: S1. Open slots corresponding to the docking portions on both ends of the L-shaped steel body, open first through holes for bolt installation, open slide grooves corresponding to the connecting rails, open corresponding fitting grooves on the connectors for enhanced firmness, and open second through holes on the outer fixing plate; S2. Connect the outer fixing plate to the outer side of the L-shaped steel body through the connecting rail and the sliding groove mortise and tenon joint to strengthen the horizontal connection; S3. Connect and fix the adjacent L-shaped steel bodies to the outer fixing plates with bolts and nuts to enhance the vertical and longitudinal connection stability of the L-shaped steel body connections; S4, the connection between the connector and the fitting groove strengthens the fastening force perpendicular to the docking direction and enhances the horizontal and vertical connection stability: S5. The reinforcing braces are connected by protrusions and grooves to form a triangular firm support area at the connection of adjacent L-shaped steel bodies, thereby enhancing the bearing capacity of the L-shaped steel body in response to different external force directions, enabling it to withstand greater loads and improving the service strength of the L-shaped steel body.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The high-strength L-shaped steel and its production process, during use, is fixed in all directions through multi-directional connections, so that the L-shaped steel is firmly supported and constrained in all directions. The all-round connection can better disperse the load and reduce local stress concentration, thereby greatly enhancing the firmness of the connection, enabling it to withstand greater loads, improving the fatigue resistance of the L-shaped steel connection, and thus improving the service strength of the L-shaped steel; 1. Further, after the docking portion and the slot are plugged in, the mounting hole on the docking portion, the first through hole on the L-shaped steel body, and the second through hole on the outer fixing plate will be in a coincident position. At this time, a bolt is passed through the first through hole, the mounting hole, and the second through hole, and the nut is tightened at the top and bottom of the bolt, thereby reinforcing the horizontal and vertical parts of the docking portion of the L-shaped steel body; 2. Furthermore, when the L-shaped steel bodies are butted together, the slide grooves on the L-shaped steel bodies are connected to the connecting rails on the end plates, thereby limiting and fixing the spliced L-shaped steel bodies, thereby enhancing the stability of the spliced L-shaped steel bodies; 3. Further, the rotating rod on the L-shaped steel body is rotated. After the rotating rod rotates, the pull rope drives the insertion rod to compress the spring and retract it into the rotating groove. Then, the connector is inserted into the fitting groove. The connector locks the spliced L-shaped steel body again. After the rotating rod is released, the spring pushes the insertion rod out and plugs into the positioning hole on the side of the connector, thereby fixing the connector. The double locking enhances the strength of the L-shaped steel body joint and can withstand external forces from all sides and remain stable. 4. Furthermore, the reinforcing support is connected to the groove on the L-shaped steel body through the protrusion, thereby spanning both sides of the joint of the L-shaped steel body and forming a stable support area at the joint of the L-shaped steel body, further improving the use strength of the joint of the L-shaped steel body and improving the fatigue resistance of the L-shaped steel connection, thereby improving the use strength of the L-shaped steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of the overall connection state of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the overall connection state of the present invention; Figure 3 It is a partial cross-sectional structural diagram of the integral connection of the present invention; Figure 4 This is a schematic structural diagram of the present invention in a separated state of the integral connection; Figure 5 This is a schematic diagram of the side view of the slot and the slide groove of the present invention; Figure 6 This is a schematic diagram of the explosion structure of the L-shaped steel connection of the present invention; Figure 7 This is a schematic cross-sectional view of the insert rod and the connector of the present invention; Figure 8 This is a schematic diagram of the exploded rear view of the connection between the reinforcement brace and the L-shaped steel of the present invention; Figure 9 This is a schematic diagram of the exploded front view structure of the connection between the reinforcing brace and the L-shaped steel of the present invention.

[0015] In the figure: 1. L-shaped steel body; 2. docking part; 3. slot; 4. outer fixing plate; 5. first through hole; 6. mounting hole; 7. second through hole; 8. bolt; 9. nut; 10. end plate; 11. connecting rail; 12. slide groove; 13. rotating groove; 14. fitting groove; 15. connecting piece; 16. rotating rod; 17. pull rope; 18. plug rod; 19. spring; 20. positioning hole; 21. reinforcement support; 22. protrusion; 23. groove. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1 - Figure 9 The present invention provides the following technical solutions: a high-strength L-shaped steel, comprising an L-shaped steel body 1, a docking portion 2 is fixedly installed on the right end portion of the L-shaped steel body 1, and the docking portion 2 is plugged and fixed with a slot 3 on the adjacent L-shaped steel body 1, and the slot 3 is opened at the right end portion of the L-shaped steel body 1, and an outer fixing plate 4 is provided on the outside of the docking portion of the L-shaped steel body 1, and an end plate 10 is integrally installed on the top and bottom of the outer fixing plate 4, and the end plate 10 is in contact with the top and front side of the L-shaped steel body 1, and the two ends of the L-shaped steel body 1 are symmetrically provided with a fitting groove 14, and a connecting piece 15 is connected in the fitting groove 14, and the connecting piece 15 locks and reinforces the docking portion of the L-shaped steel body 1, and grooves 23 are opened on the front side and the top of the bottom surface of both ends of the L-shaped steel body 1, and a protrusion 22 is inserted in the groove 23, and the protrusion 22 is fixed at the top and bottom of the reinforcing support 21, and the reinforcing support 21 spans between the docking portions of the L-shaped steel body 1, and a triangular support area is formed at the docking portion of the reinforcing support 21 and the L-shaped steel body 1; The L-shaped steel body 1 is connected to the two sides of the outer fixing plate 4, and the end plates 10 on the outer fixing plate 4 are in contact with the top and bottom of the L-shaped steel body 1. Then the butt joint 2 on the L-shaped steel body 1 is plugged and fixed with the slot 3 on the adjacent L-shaped steel body 1, thereby performing horizontal internal connection and external reinforcement of the L-shaped steel body 1. Then the connecting piece 15 is inserted into the fitting groove 14 of the two L-shaped steel bodies 1, thereby performing horizontal and vertical connection and fixing of the butt joint of the L-shaped steel body 1. Finally, the protrusion 22 on the reinforcing support 21 is plugged into the groove 23, thereby reinforcing the butt joint of the L-shaped steel body 1 again. The L-shaped steel body 1 and the reinforcing support 21 form a triangular support area, thereby improving the stability of the butt joint, so that the butt joint of the spliced L-shaped steel body 1 can withstand multiple external forces. The all-round connection can better disperse the load, reduce local stress concentration, thereby greatly enhancing the firmness of the connection, so that it can withstand greater loads.

[0018] Example 2: Based on Example 1, the first through hole 5 and the second through hole 7 are also disclosed. Please refer to Figure 1 - Figure 5 As shown, its specific structure is as follows: the docking portion 2 and the slot 3 are both configured as rectangular structures, a mounting hole 6 is provided through the docking portion 2, the upper and lower sides of the mounting hole 6 coincide with the position of the first through hole 5, the first through hole 5 is provided through the vertical portion and the horizontal portion at both ends of the L-shaped steel body 1, the horizontal portion and the vertical portion of the outer fixing plate 4 are both provided with a second through hole 7, the second through hole 7 corresponds to the position of the first through hole 5 and the mounting hole 6 one-to-one, a bolt 8 is connected through the first through hole 5, the mounting hole 6 and the second through hole 7, the top and bottom of the bolt 8 are threadedly connected with a nut 9, and the nut 9 is countersunk in the second through hole 7 after being tightened; During use, after the docking part 2 and the slot 3 are plugged in, the mounting hole 6 on the docking part 2 and the first through hole 5 on the L-shaped steel body 1 and the second through hole 7 on the outer fixing plate 4 will be in an overlapping position. At this time, the bolt 8 is passed through the first through hole 5, the mounting hole 6 and the second through hole 7, and the nut 9 is tightened at the top and bottom of the bolt 8, thereby reinforcing the horizontal and vertical parts of the docking point of the L-shaped steel body 1.

[0019] Example 3: Based on Example 2, the connecting rail 11 and the slide 12 are also disclosed. Please refer to Figure 3 - Figure 5 and Figure 8 - Figure 9As shown, its specific structure is as follows: a connecting rail 11 is fixed to the side of the upper end plate 10 of the outer fixing plate 4, and the connecting rail 11 is slidably connected to the slide groove 12. The slide groove 12 is symmetrically opened on the front side of the horizontal part of both sides of the L-shaped steel body 1 and the top of the vertical part. The L-shaped steel body 1 forms a mortise and tenon connection fixing structure through the connecting rail 11 and the slide groove 12. The connecting rail 11 and the slide groove 12 are both configured as a dovetail structure; During use, when the L-shaped steel body 1 is docked, the slide groove 12 on the L-shaped steel body 1 is connected to the connecting rail 11 on the end plate 10, thereby limiting and fixing the spliced L-shaped steel body 1, thereby enhancing the stability of the spliced L-shaped steel body 1.

[0020] Example 4: Based on Example 3, the insertion rod 18 and the positioning hole 20 are also disclosed. Please refer to Figure 6 - Figure 7 As shown, its specific structure is as follows: the fitting groove 14 at the end of the L-shaped steel body 1 is set to a "T"-shaped structure, the fitting grooves 14 on the opposite surfaces of the L-shaped steel body 1 constitute a complete connecting groove, and the connecting groove is connected with a connector 15 in a concave-convex matching manner, and the connector 15 is set to an "I"-shaped structure, and a rotating groove 13 is provided inside the horizontal part and the vertical part of the right end of the L-shaped steel body 1. A rotating rod 16 is rotatably connected in the rotating groove 13, and a pull rope 17 is connected to the outside of the rotating rod 16. The end of the pull rope 17 is connected to an insertion rod 18, and the insertion rod 18 is horizontally penetrated and slidably connected to the fitting groove 14 on the right side of the L-shaped steel body 1. A spring 19 is installed between the insertion rod 18 and the outer wall of the fitting groove 14, and the outer end of the insertion rod 18 is engaged with the positioning hole 20, and the positioning hole 20 is opened on the side of the connecting member 15; When in use, the rotating rod 16 on the L-shaped steel body 1 is rotated. After the rotating rod 16 is rotated, the insertion rod 18 is driven by the pull rope 17 to compress the spring 19 and retracted into the rotating groove 13, and then the connecting piece 15 is inserted into the fitting groove 14. The connecting piece 15 locks the spliced L-shaped steel body 1 again. After loosening the rotating rod 16, the spring 19 pushes the insertion rod 18 to extend and plug into the positioning hole 20 on the side of the connecting piece 15, thereby fixing the connecting piece 15 and doubly locking it, thereby enhancing the strength of the joint of the L-shaped steel body 1 and being able to withstand external forces from all sides and remain stable.

[0021] Example 5: Based on Example 4, a reinforcing brace 21 is also disclosed. Please refer to Figure 3 - Figure 5 and Figure 8 - Figure 9 As shown, its specific structure is as follows: half of the protrusion 22 on the reinforcing support 21 is inserted into the groove 23 of the left L-shaped steel body 1, and the other half of the protrusion 22 is inserted into the groove 23 of the right L-shaped steel body 1; When in use, the reinforcing support 21 is plugged into the groove 23 on the L-shaped steel body 1 through the protrusion 22, thereby spanning both sides of the joint of the L-shaped steel body 1 and forming a stable support area at the joint of the L-shaped steel body 1, further improving the use strength of the joint of the L-shaped steel body 1, improving the fatigue resistance of the L-shaped steel connection, and thus improving the use strength of the L-shaped steel.

[0022] A high-strength L-shaped steel and a production process of the high-strength L-shaped steel are also disclosed. The specific method and steps are as follows: S1. Slots 3 corresponding to the docking portions 2 are formed on both ends of the L-shaped steel body 1, first through holes 5 are formed to facilitate the installation of bolts 8, sliding grooves 12 corresponding to the connecting rails 11 are formed, and corresponding fitting grooves 14 are formed on the connecting members 15 for strengthening the firmness, and second through holes 7 are formed on the outer fixing plate 4; S2, connect the outer fixing plate 4 to the outer side of the joint part of the L-shaped steel body 1 through the connecting rail 11 and the slide groove 12, and perform horizontal connection reinforcement; S3. Connect and fix the adjacent L-shaped steel bodies 1 to the outer fixing plates 4 using bolts 8 and nuts 9 to enhance the vertical and longitudinal connection stability of the connection between the L-shaped steel bodies 1; S4, the connection piece 15 and the fitting groove 14 are connected to strengthen the fastening force perpendicular to the docking direction and enhance the horizontal and vertical connection stability: S5. The reinforcing brace 21 is connected by the protrusion 22 and the groove 23, so that the connection between adjacent L-shaped steel bodies 1 forms a triangular firm support area, which enhances the bearing capacity of the L-shaped steel body 1 when responding to different external force directions, enables it to withstand a larger load, and improves the use strength of the L-shaped steel body 1.

[0023] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 should be included in the scope of protection of the present invention.

Claims

1. A high-strength L-shaped steel, comprising an L-shaped steel body (1), wherein a docking portion (2) is fixedly mounted on the right end portion of the L-shaped steel body (1), wherein the docking portion (2) is plugged and fixed to a slot (3) on an adjacent L-shaped steel body (1), and the slot (3) is provided at the right end portion of the L-shaped steel body (1); Its characteristics are: An outer fixing plate (4) is provided on the outside of the joint of the L-shaped steel body (1), and end plates (10) are integrally mounted on the top and bottom of the outer fixing plate (4), and the end plates (10) are in contact with the top and front side of the L-shaped steel body (1); The two end portions of the L-shaped steel body (1) are symmetrically provided with engaging grooves (14), the engaging grooves (14) are connected with connecting pieces (15), and the connecting pieces (15) lock and reinforce the joints of the L-shaped steel body (1); The front sides and the top of the bottom surface of both ends of the L-shaped steel body (1) are provided with grooves (23), and protrusions (22) are inserted into the grooves (23). The protrusions (22) are fixed to the top and bottom of the reinforcing support (21). The reinforcing support (21) spans between the joints of the L-shaped steel body (1), and the joints of the reinforcing support (21) and the L-shaped steel body (1) form a triangular support area.

2. The high-strength L-shaped steel according to claim 1, characterized in that: The docking portion (2) and the slot (3) are both configured as rectangular structures. A mounting hole (6) is provided through the docking portion (2). The upper and lower sides of the mounting hole (6) coincide with the positions of the first through hole (5). The first through hole (5) extends through the vertical portion and the horizontal portion provided at both ends of the L-shaped steel body (1).

3. The high-strength L-shaped steel according to claim 1, characterized in that: The horizontal portion and the vertical portion of the outer fixing plate (4) are both provided with second through holes (7), and the positions of the second through holes (7) correspond one to one with the positions of the first through holes (5) and the mounting holes (6). Bolts (8) are connected through the first through holes (5), the mounting holes (6) and the second through holes (7). The top and bottom of the bolts (8) are both threadedly connected with nuts (9), and the nuts (9) are sunk into the second through holes (7) after being tightened.

4. The high-strength L-shaped steel according to claim 1, characterized in that: A connecting rail (11) is fixed to the side of the upper end plate (10) of the outer fixing plate (4), and the connecting rail (11) is slidably connected to the slide groove (12). The slide groove (12) is symmetrically opened on the front side of the horizontal part and the top of the vertical part of both sides of the L-shaped steel body (1). The L-shaped steel body (1) forms a mortise and tenon connection fixing structure through the connecting rail (11) and the slide groove (12), and the connecting rail (11) and the slide groove (12) are both configured as a dovetail structure.

5. The high-strength L-shaped steel according to claim 1, characterized in that: The engaging groove (14) at the end of the L-shaped steel body (1) is configured as a "T"-shaped structure. The engaging grooves (14) on the opposite sides of the L-shaped steel body (1) form a complete connecting notch, and a connecting piece (15) is connected in a concave-convex manner in the connecting notch. The connecting piece (15) is configured as an "I"-shaped structure.

6. The high-strength L-shaped steel according to claim 1, characterized in that: A rotation groove (13) is provided inside the horizontal part and the vertical part of the right end of the L-shaped steel body (1), a rotation rod (16) is rotatably connected in the rotation groove (13), a pull rope (17) is externally connected to the rotation rod (16), an end of the pull rope (17) is connected to an insertion rod (18), the insertion rod (18) is horizontally penetrated and slidably connected to the right side fitting groove (14) of the L-shaped steel body (1), and a spring (19) is installed between the insertion rod (18) and the outer wall of the fitting groove (14).

7. The high-strength L-shaped steel according to claim 6, characterized in that: The outer end of the insertion rod (18) is engaged with a positioning hole (20), and the positioning hole (20) is opened on the side of the connecting piece (15).

8. The high-strength L-shaped steel according to claim 1, characterized in that: Half of the protrusion (22) on the reinforcing support (21) is inserted into the groove (23) of the left L-shaped steel body (1), and the other half of the protrusion (22) is inserted into the groove (23) of the right L-shaped steel body (1).

9. The high-strength L-shaped steel according to claim 1, characterized in that: The production process of high-strength L-shaped steel is also disclosed, and the specific method and steps are as follows: S1, opening corresponding slots (3), first through holes (5), slide grooves (12) and interlocking grooves (14) at both side ends of the L-shaped steel body (1), and opening a second through hole (7) on the outer fixing plate (4); S2, connecting the outer fixing plate (4) to the outer side of the joint portion of the L-shaped steel body (1) through the connecting rail (11) and the slide groove (12) to strengthen the connection in the horizontal direction; S3. Connect and fix the adjacent L-shaped steel bodies (1) to the outer fixing plates (4) by means of bolts (8) and nuts (9), thereby strengthening the vertical and longitudinal connection stability of the connection of the L-shaped steel bodies (1); S4, the connecting piece (15) and the fitting groove (14) are connected to strengthen the fastening force perpendicular to the docking direction and enhance the horizontal and vertical connection stability: S5. The reinforcing brace (21) is connected via the protrusion (22) and the groove (23), so that the connection between the adjacent L-shaped steel bodies (1) forms a triangular strong support area, which enables it to withstand a greater load and improves the service strength of the L-shaped steel body (1).

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