Channel steel straightening device

Abstract

The invention provides a channel steel straightening device which aims at solving the problems that in the prior art, only a channel steel web can be straightened, and flexible adjustment cannot be conducted according to the size of channel steel. And by arranging the middle extrusion straightening wheel and the edge straightening wheel, simultaneous straightening treatment of a web and a flange of the channel steel is achieved, and the overall straightness of the channel steel is effectively improved. Besides, the device further has a flexible width adjusting function, through cooperative use of a high-speed gear and a first rack and cooperative use of a low-speed gear and a second rack, a second sliding plate can move along with movement of a first sliding plate, and the displacement of the second sliding plate is half of that of the first sliding plate; and it is ensured that the middle extrusion straightening wheel is always located in the center of the two edge straightening wheels in the adjusting process. By means of the design, the adaptability of the straightening device is improved, the straightening device can be suitable for channel steel of various specifications, the straightening efficiency and the product quality are improved, and the straightening device is suitable for various industrial occasions where comprehensive straightening treatment needs to be conducted on the channel steel.

Description

Technical Field

[0001] This invention belongs to the field of channel steel processing technology and relates to a channel steel straightening device. Background Technology

[0002] In the steel manufacturing industry, especially in the profile processing field, channel steel, as a common metal profile, is widely used in construction, bridge construction, and machinery manufacturing due to its unique "I"-shaped cross-section structure. The production of channel steel involves multiple processes, including hot rolling and cold bending, which can lead to varying degrees of bending and twisting after forming. To ensure the straightness and flatness of the final product, the straightening process becomes an indispensable part of the channel steel production line.

[0003] Traditional channel steel straightening technology mainly relies on straightening machines. These machines are typically equipped with multiple sets of straightening rollers, which apply appropriate pressure to restore the channel steel to an ideal straight state. The working principle of a straightening machine is that as the channel steel passes through the machine, the interaction force between the straightening rollers gradually eliminates the internal stress of the material, thereby achieving the straightening purpose. This straightening method is simple and effective, but some shortcomings have also been revealed in practical applications.

[0004] First, existing channel steel straightening devices mostly focus on straightening the web (the thicker middle section) of the channel steel. Since the flanges (the thinner sides) are perpendicular to the web, they cannot be straightened. Second, most existing straightening devices on the market do not fully consider the diversity of channel steel dimensions in their design; they often can only handle channel steel dimensions within a fixed range and cannot flexibly adjust the width as needed. Summary of the Invention

[0005] The purpose of this invention is to provide a channel steel straightening device that can effectively straighten the web and flange of the channel steel at the same time, and can flexibly meet the straightening needs of channel steel of various specifications.

[0006] To solve the above-mentioned technical problems, the present invention provides a channel steel straightening device, including a frame. The upper end of the frame is provided with a straightening area and an adjustment area arranged side by side. Two rows of compression straightening groups arranged vertically opposite each other are rotatably connected in the straightening area. Each compression straightening group includes multiple edge straightening groups and intermediate straightening groups that are distributed in pairs. The upper or lower part of each edge straightening group and each intermediate straightening group is not directly opposite the edge straightening group or the intermediate straightening group. A drive motor for driving the edge straightening group and the intermediate straightening group to rotate in the same direction is installed on one side of the frame.

[0007] Each edge straightening group includes a first drive shaft, a first transmission shaft slidably connected to the first drive shaft, and two edge straightening wheels respectively disposed on the first drive shaft and the first transmission shaft and disposed opposite to each other. One end of each first drive shaft facing the end of the corresponding first transmission shaft is provided with a first sliding hole, and one end of each first transmission shaft facing the end of the corresponding first drive shaft is provided with a first sliding shaft slidably connected to the first sliding hole and unable to rotate relative to it. The outer periphery of each edge straightening wheel is provided with an edge straightening circular groove.

[0008] Each intermediate straightening group includes a second drive shaft, a second transmission shaft slidably connected to the second drive shaft, and an intermediate extrusion straightening wheel disposed on the second transmission shaft. The intermediate extrusion straightening wheel is always located in the middle position between the two edge straightening wheels on the edge straightening group. One end of each second drive shaft facing the end of the corresponding second transmission shaft is provided with a second sliding hole, and the end of each second transmission shaft facing the corresponding second drive shaft is provided with a second sliding shaft that is slidably connected to the second sliding hole and cannot rotate relative to it.

[0009] Within the adjustment zone, a first slide plate slidably connects to each first drive shaft and is rotatably connected to each first drive shaft, facing the direction of the straightening zone. A second slide plate slidably connects to each second drive shaft and is rotatably connected to each second drive shaft within the adjustment zone. The second slide plate is located on the side of the first slide plate closest to the straightening zone. Multiple sliding holes, corresponding to the first drive shafts, are formed through the second slide plate. Within the adjustment zone, an adjustment drive shaft is rotatably connected to the side of the first slide plate furthest from the second slide plate, extending along its length. Both ends of the adjustment drive shaft are provided with external threads in opposite directions. Both ends of the adjustment drive shaft are rotatably connected to threaded sleeves threaded to the corresponding external threads. Each threaded sleeve is rotatably connected to a push-pull arm on the side corresponding to the first slide plate. The second slide plate can move with the displacement of the first slide plate, and the displacement of the second slide plate is half the displacement of the first slide plate.

[0010] By adopting the above technical solution, before straightening the channel steel, the width of the channel steel is first adjusted. The adjustment drive shaft is rotated to drive the threaded sleeve to slide inward or outward at the same time. The first slide plate can be pushed to slide by the push-pull arm. The sliding of the first slide plate pushes the first transmission shaft to slide relative to the first drive shaft, thereby achieving the purpose of adjusting the distance between the two edge straightening wheels. The second slide plate moves in the same direction as the first slide plate, and the displacement of the second slide plate is half of the displacement of the first slide plate.

[0011] After adjustment, the channel steel is inserted from one end between the upper and lower rows of compression straightening groups. The drive motor drives the edge straightening group and the middle straightening group to rotate in the same direction. During the rotation, the channel steel is gradually driven in. The middle compression straightening wheel and the edge compression straightening wheel compress and straighten the web of the channel steel. If the web of the channel steel is not straight, it will bend downward or upward during the forward movement. The rotating middle compression straightening wheel and the edge compression straightening wheel will gradually compress the channel steel in the opposite direction, upward or downward. The flanges on both sides of the channel steel are inserted into the edge straightening groove, and the flanges are compressed and straightened. Finally, after being removed from the other end, the web and flanges of the channel steel can be effectively straightened.

[0012] The invention is further configured such that the first slide plate is rotatably connected to a graded transmission shaft arranged along its length on the side facing the second slide plate, both ends of the graded transmission shaft are provided with high-speed gears, and multiple low-speed gears are provided on the graded transmission shaft. The diameter of each high-speed gear is twice that of the corresponding low-speed gear. The two inner walls of the adjustment area are provided with first racks that mesh with the high-speed gears one by one. The second slide plate is provided with multiple second racks that mesh with the low-speed gears one by one in the direction facing the first slide plate.

[0013] By adopting the above technical solution, when the first slide slides, it pushes the graded transmission shaft to move. During the movement of the graded transmission shaft, the high-speed gear meshes with the first rack, driving the graded transmission shaft to rotate. The low-speed gear rotates coaxially with the high-speed gear. The rotation of the low-speed gear drives the second rack to move in the same direction as the first slide, thus causing the second slide to move in the same direction as the first slide. Since the diameter of the high-speed gear is twice that of the low-speed gear, the displacement of the second slide is half that of the first slide.

[0014] The present invention is further configured such that a plurality of through holes are provided through the first sliding plate and are slidably connected to the second rack in a one-to-one correspondence.

[0015] The invention is further configured such that the free end of each first drive shaft and the free end of each second drive shaft extend out of the frame and are provided with drive gears, all drive gears are in a zigzag pattern and mesh with each other in pairs, and the power output shaft of the drive motor meshes with one of the drive gears.

[0016] The present invention is further configured such that each edge straightening wheel is tilted outward by 1-2°.

[0017] By adopting the above technical solution, the inclined edge straightening wheel can squeeze the flange inward from left to right during the rotation process until the flange is straight and located in the middle before it is squeezed.

[0018] The invention is further configured such that the inlet edge of each edge straightening groove is chamfered to enlarge the inlet.

[0019] The present invention is further configured such that each first drive shaft and each first transmission shaft are provided with an edge extrusion straightening wheel on the inner side of the corresponding edge straightening wheel.

[0020] The present invention is further configured such that the inlet end of each extrusion straightening group is an intermediate straightening group, and the outer periphery of the intermediate extrusion straightening wheel of the intermediate straightening group located at the inlet end is provided with multiple circumferentially arranged friction transmission teeth.

[0021] The present invention is further configured such that one end of the adjustment drive shaft extends out of the frame and is provided with a rocker handle.

[0022] The present invention is further configured such that the inner walls at both ends of the adjustment area are provided with slide rails that are slidably connected to the first slide plate and the second slide plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] Based on the above technical content and working principle, the two beneficial effects are summarized as follows:

[0025] Firstly, this invention provides an improved channel steel straightening device, which not only straightens the web of the channel steel through the intermediate extrusion straightening wheel, but also incorporates an edge straightening wheel design. The inclined edge straightening wheel, during rotation, can extrude inwards from both sides to straighten the flanges. This allows for simultaneous straightening of the channel steel's flanges during the straightening process, avoiding the flange deformation problem caused by traditional devices that only straighten the web. This significantly improves the overall straightness and flatness of the channel steel, thereby enhancing product quality.

[0026] Secondly, the channel steel straightening device of the present invention has high flexibility and can be quickly adjusted according to the width of channel steel of different specifications. By employing a precision meshing mechanism of a high-speed gear with the first rack and a low-speed gear with the second rack, coordinated displacement between the first and second sliding plates is achieved. Specifically, the displacement of the second sliding plate is half that of the first sliding plate, ensuring that regardless of the width, the intermediate compression straightening roller is always positioned between the two edge straightening rollers, maintaining the optimal straightening position. This design not only simplifies the adjustment process but also significantly improves the applicability and working efficiency of the straightening device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an exploded view showing the connection of the edge straightening group;

[0029] Figure 3 This is an exploded view showing the connection of the intermediate straightening group;

[0030] Figure 4 Used to demonstrate the connection between the first and second skateboards;

[0031] Figure 5 Used to demonstrate the connection between the high-speed gear and the first rack;

[0032] Figure 6 The broken line connection used to illustrate the drive gear.

[0033] The components are as follows: 1. Frame; 2. Straightening zone; 3. Adjustment zone; 4. First drive shaft; 5. First transmission shaft; 6. Edge straightening wheel; 7. First sliding hole; 8. First sliding shaft; 9. Edge straightening circular groove; 10. Edge extrusion straightening wheel; 11. Second drive shaft; 12. Second transmission shaft; 13. Intermediate extrusion straightening wheel; 14. Second sliding hole; 15. Second sliding shaft; 16. Friction transmission gear; 17. Drive motor; 18. Drive gear; 19. First slide plate; 20. Second slide plate; 21. Slide rail; 22. Sliding perforation; 23. Adjustment drive shaft; 24. Handle; 25. Threaded sliding sleeve; 26. Push-pull arm; 27. Graded transmission shaft; 28. High-speed gear; 29. ​​Low-speed gear; 30. First rack; 31. Second rack; 32. Perforation. Detailed Implementation

[0034] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the channel steel straightening device proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0035] Example, refer to Figure 1-6 A channel steel straightening device includes a frame 1. The upper end of the frame 1 is provided with a straightening zone 2 and an adjustment zone 3 arranged side by side. The straightening zone 2 is located on the left and the adjustment zone 3 is located on the right. Two rows of compression straightening groups are rotatably connected in the straightening zone 2 and arranged vertically opposite each other. Each compression straightening group includes multiple edge straightening groups and intermediate straightening groups that are distributed in pairs. The top or bottom of each edge straightening group and each intermediate straightening group is not directly opposite the edge straightening group or the intermediate straightening group. The edge straightening group and the intermediate straightening group are distributed vertically and horizontally, so that when the channel steel enters, if it is not straight, it will bend downward or upward during the forward movement, and then be gradually squeezed and straightened by the intermediate straightening group until it is completely straightened before it can pass through the upper and lower compression straightening groups.

[0036] Each edge straightening assembly includes a first drive shaft 4, a first transmission shaft 5 slidably connected to the first drive shaft 4, and two edge straightening wheels 6 respectively mounted on the first drive shaft 4 and the first transmission shaft 5 and arranged opposite to each other. Each first drive shaft 4 has a first sliding hole 7 extending inwards from one end facing the corresponding end of the first transmission shaft 5. Each first transmission shaft 5 has a first sliding shaft 8 slidably connected to the first sliding hole 7 and not rotatable relative to it, making the connection between the two edge straightening wheels 6 adjustable. Each edge straightening wheel 6 has an inwardly extending edge straightening groove 9 on its outer circumference for engaging and straightening the flange of the channel steel. The entrance edge of each edge straightening groove 9 is chamfered to enlarge the entrance. Each edge straightening wheel 6 is tilted outwards by 1-2°, allowing it to press the flange of the channel steel back and forth during rotation, ultimately straightening the flange of the channel steel. Each first drive shaft 4 and each first transmission shaft 5 is provided with an edge compression straightening wheel 10 on the inner side of the corresponding edge straightening wheel 6 to increase the compression straightening capacity of the web edge position.

[0037] Each intermediate straightening group includes a second drive shaft 11, a second transmission shaft 12 slidably connected to the second drive shaft 11, and an intermediate extrusion straightening wheel 13 disposed on the second transmission shaft 12. The intermediate extrusion straightening wheel 13 is always located in the middle position between the two edge straightening wheels 6 on the edge straightening group. One end of each second drive shaft 11 is provided with a second sliding hole 14 facing the end of the corresponding second transmission shaft 12. One end of each second transmission shaft 12 is provided with a second sliding shaft 15 slidably connected to the second sliding hole 14 and not rotatable relative to it. The inlet end of each extrusion straightening group is the intermediate straightening group. The outer periphery of the intermediate extrusion straightening wheel 13 of the intermediate straightening group located at the inlet end is provided with multiple circumferentially arranged friction transmission teeth 16. The friction transmission teeth 16 on the intermediate extrusion straightening wheel 13 drive the channel steel to move inward.

[0038] A drive motor 17 is installed on one side of the frame 1 to drive the edge straightening group and the middle straightening group to rotate in the same direction. The free end of each first drive shaft 4 and the free end of each second drive shaft 11 extend out of the frame 1 and are provided with a drive gear 18. All the drive gears 18 are meshed in pairs in a zigzag shape. The power output shaft of the drive motor 17 is meshed with one of the drive gears 18. Through the zigzag connection of the drive gears 18, the upper and lower drive gears 18 can rotate in the same direction, thereby pushing the channel steel to move.

[0039] A first slide plate 19, which is rotatably connected to each first drive shaft 5, is slidably connected to the adjustment zone 3 in the direction of the straightening zone 2. A second slide plate 20, which is rotatably connected to each second drive shaft 12, is slidably connected to the adjustment zone 3 in the direction of the straightening zone 2. A slide rail 21, which is slidably connected to the first slide plate 19 and the second slide plate 20, is provided on the inner wall of both ends of the adjustment zone 3. The second slide plate 20 is located on the side of the first slide plate 19 near the straightening zone 2. Multiple sliding holes 3222 are provided through the second slide plate 20 and are slidably connected to the first drive shaft 5 one by one. An adjustment drive shaft 23 is rotatably connected to the side of the first slide plate 19 away from the second slide plate 20 in the adjustment zone 3. One end of the adjustment drive shaft 23 extends out of the frame 1 and is provided with a rocker handle 24. Both ends of the adjustment drive shaft 23 are respectively provided with external threads in opposite directions. Both ends of the adjustment drive shaft 23 are rotatably connected with a threaded sleeve 25 that is threaded to the corresponding external thread. Each threaded sleeve 25 is rotatably connected to a push-pull arm 26 on the side of the corresponding first slide plate 19. By adjusting the drive shaft 23 to drive the threaded sleeve 25 to slide inward or outward at the same time, the first slide plate 19 can be pushed to slide by the push-pull arm 26.

[0040] A graded transmission shaft 27 is rotatably connected to the side of the first slide plate 19 facing the second slide plate 20, which is arranged along its length. A high-speed gear 28 is provided at both ends of the graded transmission shaft 27, and three low-speed gears 29 are provided on the graded transmission shaft 27. The diameter of the high-speed gear 28 is twice that of the low-speed gear 29. A first rack 30 is provided on each of the two inner walls of the adjustment area 3, which meshes with the high-speed gear 28 one by one. Three second racks 31 are provided on the second slide plate 20 facing the first slide plate 19, which mesh with the low-speed gears 29 one by one. Three through holes 32 are provided through the first slide plate 19, which are slidably connected to the second racks 31 one by one. When the graded transmission shaft 27 rotates, the second slide plate 20 can be displaced with the displacement of the first slide plate 19 through the connection between the high-speed gear 28 and the first rack 30, and the connection between the low-speed gear 29 and the second rack 31. The displacement of the second slide plate 20 is half the displacement of the first slide plate 19.

[0041] Working principle: Before straightening the channel steel, the width of the channel steel is first adjusted. The drive shaft 23 is adjusted by rotating the crank 24, which drives the threaded sleeve 25 to slide inward or outward simultaneously. This allows the push-pull arm 26 to push the first slide plate 19 to slide. The sliding of the first slide plate 19 pushes the first transmission shaft 5 to slide relative to the first drive shaft 4, thereby achieving the purpose of adjusting the distance between the two edge straightening wheels 6. When the first slide plate 19 slides, it pushes the graded transmission shaft 27 to move. During the movement of the graded transmission shaft 27, the high-speed gear 28 meshes with the first rack 30, driving the graded transmission shaft 27 to rotate. The low-speed gear 29 rotates coaxially with the high-speed gear 28. The rotation of the low-speed gear 29 drives the second rack 31 to move in the same direction as the first slide plate 19, which in turn drives the second slide plate 20 to move in the same direction as the first slide plate 19. Since the diameter of the high-speed gear 28 is twice that of the low-speed gear 29, the displacement of the second slide plate 20 is half the displacement of the first slide plate 19.

[0042] After adjustment, the channel steel is inserted from one end between the upper and lower rows of compression straightening groups. The drive motor 17 drives the edge straightening group and the middle straightening group to rotate in the same direction. During the rotation, the channel steel is gradually driven in. The middle compression straightening wheel 13 and the edge compression straightening wheel 10 compress and straighten the web of the channel steel. If the web of the channel steel is not straight, it will bend downward or upward during the forward movement. The rotating middle compression straightening wheel 13 and the edge compression straightening wheel 10 will gradually compress the channel steel in the opposite direction, upward or downward. The flanges on both sides of the channel steel are inserted into the edge straightening circular groove 9 and the flanges are compressed and straightened. The inclined edge straightening wheel 6 can compress the flanges inward from left to right during the rotation until the flanges are straight and located in the middle before they are no longer compressed. Finally, after being removed from the other end, the web and flanges of the channel steel can be effectively straightened.

[0043] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0044] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A channel steel straightening device, comprising a frame (1), wherein the upper end of the frame (1) is provided with a straightening area (2) and an adjustment area (3) arranged side by side, characterized in that: Two rows of extrusion straightening groups arranged in an upper and lower direction are rotatably connected in the straightening area (2), each of the extrusion straightening groups includes a plurality of edge straightening groups and middle straightening groups arranged in pairs, and the upper and lower parts of each edge straightening group and each middle straightening group are not directly opposite to the edge straightening group or the middle straightening group. A driving motor (17) for driving the edge straightening group and the middle straightening group to rotate in the same direction is installed on one side of the frame (1); Each edge straightening group comprises a first driving shaft (4), a first transmission shaft (5) slidably connected to the first driving shaft (4), and two edge straightening wheels (6) respectively arranged on the first driving shaft (4) and the first transmission shaft (5) and arranged opposite to each other; one end of each first driving shaft (4) is provided with a first sliding hole (7) inwardly facing one end of the corresponding first transmission shaft (5); one end of each first transmission shaft (5) is provided with a first sliding shaft (8) slidably connected to the first sliding hole (7) and cannot rotate relative to the first sliding hole; and the outer circumference of each edge straightening wheel (6) is provided with an edge straightening circular groove (9) inwardly facing; Each intermediate straightening group comprises a second driving shaft (11), a second transmission shaft (12) slidably connected to the second driving shaft (11), and an intermediate extrusion straightening wheel (13) arranged on the second transmission shaft (12); the intermediate extrusion straightening wheel (13) is always located in the middle of the two edge straightening wheels (6) on the edge straightening group; one end of each second driving shaft (11) is provided with a second sliding hole (14) inwardly facing one end of the corresponding second transmission shaft (12); and one end of each second transmission shaft (12) is provided with a second sliding shaft (15) slidably connected to the second sliding hole (14) and cannot rotate relative to the second sliding hole (14); A first slide plate (19) is slidably connected in the adjustment area (3) toward the straightening area (2) and is rotatably connected to each first transmission shaft (5). A second slide plate (20) is slidably connected in the adjustment area (3) toward the straightening area (2) and is rotatably connected to each second transmission shaft (12). The second slide plate (20) is located on a side of the first slide plate (19) close to the straightening area (2). A plurality of sliding through holes (32) (22) are provided through the second slide plate (20) and are slidably connected to the first transmission shaft (5) in a one-to-one correspondence. A side away from the second slide plate (20) is rotatably connected to an adjustment drive shaft (23) arranged along its length direction, and both ends of the adjustment drive shaft (23) are respectively provided with external threads with opposite spiral directions. Both ends of the adjustment drive shaft (23) are rotatably connected to threaded sleeves (25) threadedly connected to the corresponding external threads. Each threaded sleeve (25) is rotatably connected to a push-pull arm (26) on one side of the corresponding first slide plate (19). The second slide plate (20) can be displaced along with the displacement of the first slide plate (19), and the displacement of the second slide plate (20) is half of the displacement of the first slide plate (19).

2. A channel steel straightening device according to claim 1, characterized in that: The first slide plate (19) is rotatably connected to a grading transmission shaft (27) arranged along its length direction on one side facing the second slide plate (20); high-speed gears (28) are arranged at both ends of the grading transmission shaft (27); a plurality of low-speed gears (29) are arranged on the grading transmission shaft (27); the diameter of each high-speed gear (28) is twice that of the corresponding low-speed gear (29); first racks (30) meshing with the high-speed gears (28) in a one-to-one correspondence are arranged on both inner walls of the adjustment area (3); and a plurality of second racks (31) meshing with the low-speed gears (29) in a one-to-one correspondence are arranged on the second slide plate (20) in a direction facing the first slide plate (19).

3. A channel steel straightening device according to claim 2, characterized in that: A plurality of through holes (32) are provided through the first slide plate (19) and are slidably connected to the second racks (31) in a one-to-one correspondence.

4. A channel steel straightening device according to claim 1, characterized in that: The free end of each first drive shaft (4) and the free end of each second drive shaft (11) extend out of the frame (1) and are provided with a drive gear (18). All the drive gears (18) are in a broken line shape and mesh with each other in pairs. The power output shaft of the drive motor (17) meshes with one of the drive gears (18).

5. A channel steel straightening device according to claim 1, characterized in that: Each edge straightening wheel (6) is inclined outwards by 1-2°.

6. A channel steel straightening device according to claim 5, characterized in that: The inlet edge of each edge-straightening circular groove (9) is chamfered to enlarge the inlet.

7. A channel steel straightening device according to any one of claims 1, 5 or 6, characterized in that: Each first driving shaft (4) and each first transmission shaft (5) is provided with an edge pressing and straightening wheel (10) on the inner side of the corresponding edge straightening wheel (6).

8. A channel steel straightening device according to claim 1, characterized in that: The inlet end of each extrusion straightening group is an intermediate straightening group, and the outer circumference of the intermediate extrusion straightening wheel (13) of the intermediate straightening group located at the inlet end is provided with a plurality of friction transmission teeth (16) arranged in a circular pattern.

9. A channel steel straightening device according to claim 1, characterized in that: One end of the adjustment drive shaft (23) extends out of the frame body (1) and is provided with a crank (24).

10. A channel steel straightening device according to claim 1, characterized in that: The inner walls at both ends of the adjustment area (3) are provided with slide rails (21) that are slidably connected to the first slide plate (19) and the second slide plate (20).

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