Special-shaped steel structure bending device

Abstract

The invention relates to the field of steel plate bending devices, and discloses a special-shaped steel structure bending device which comprises a base, a top extrusion seat is fixedly mounted on the base, a first bending block is fixedly mounted at the top end of the center of the base, a steel plate is placed on the first bending block, and a second bending block is fixedly mounted at the bottom end of the center of the top extrusion seat. A telescopic rod is arranged at the connecting position of the top extrusion base and the second bending block, and a clamping device is arranged on the base. According to the steel plate bending device, a clamping transmission piece and a first telescopic piece are driven to rotate through a following piece in the clamping device, the steel plate clamping angle of a first clamping rod and a second clamping rod on the first telescopic piece is adjusted, and the effect that the first clamping rod and the second clamping rod clamp the steel plate after bending is achieved; the height of the first clamping rod and the height of the second clamping rod are changed, the first clamping rod and the second clamping rod adapt to the height of the steel plate after the steel plate is bent, and the safety during steel plate bending is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel plate bending devices, and more specifically, to a special-shaped steel structure bending device. Background Art

[0002] Special-shaped steel bending refers to the process of bending special-shaped steel materials to achieve specific shape and size requirements. Special-shaped steel, also known as complex and special-shaped cross-section steel, is a type of steel that can be divided into hot-bent special-shaped steel, cold-bent special-shaped steel, direct special-shaped assembly welding special-shaped steel, etc. according to different processes. Bending is a metal processing method that uses machinery to bend metal material plates into profiles of a certain shape at room temperature. Common processing methods include roll bending, press bending, and pull bending.

[0003] The patent with publication number CN110788170B discloses a steel plate bending device, including a working bin, a fixed frame is installed above the working bin, a motor is installed on the inner side of the fixed frame, a driving gear is installed on the inner side of the working bin, a driven gear is installed on the outer side of the driving gear, the driving gear is connected to the motor through a connecting shaft, a U-shaped plate is installed below the working bin, a connecting plate is installed on the inner side of the U-shaped plate, a second lead screw is installed at the four end feet of the connecting plate, a fixed block is installed on the outer side of the second lead screw, a fixed seat is installed on one end of the second lead screw, and a bevel gear is installed on the inner side of the fixed seat, which is convenient for staff to operate, reduces the labor intensity of the staff, and improves the working efficiency of the device.

[0004] During use, although the above-mentioned device can facilitate workers to pick up steel plates before and after bending, the bending angle will change during bending. If the workers are not careful, they may be injured during bending. In addition, the bending angle will rebound due to stress, and the stress of the steel plate after bending cannot be reduced, resulting in poor bending effect. Summary of the invention

[0005] The present invention provides a bending device for a special-shaped steel structure, which solves the technical problems in the related art that the bending angle will change during bending, which may cause injuries to the workers if the workers are not careful, and the bending angle will rebound due to stress, which cannot reduce the stress of the steel plate after bending and leads to poor bending effect.

[0006] The present invention provides a bending device for a special-shaped steel structure, comprising a base, a top extrusion seat is fixedly installed on the base, a first bending block is fixedly installed on the central top end of the base, a steel plate is placed on the first bending block, a second bending block is fixedly installed on the central bottom end of the top extrusion seat, a telescopic rod is arranged at the connection position between the top extrusion seat and the second bending block, the base is provided with a clamping device, the clamping device is used to clamp the steel plate; the clamping device comprises a first clamping rod, a second clamping rod, a follower and a follower block, the first clamping rod and the second clamping rod clamp the steel plate Steel plate clamping, the first clamping rod and the second clamping rod are provided with follower pieces at both ends, the follower pieces slide on the follower block, and the follower piece and the follower block adjust the angle at which the second clamping rod and the first clamping rod clamp the steel plate after the steel plate is squeezed; a transmission device is provided at the bottom of the follower block, and the transmission device adjusts the height of the first clamping rod and the second clamping rod; a first fixed column is fixedly installed on the second bending block, and a rolling device is provided on the first fixed column, and the rolling device rolls the steel plate after it is bent to reduce the stress of the steel plate.

[0007] As a further optimization scheme of the present invention, the transmission device includes a threaded telescopic rod symmetrically installed on the base, the threaded telescopic rod is rotatably connected to the base, the top of the threaded telescopic rod is connected to the clamping device, a second belt is arranged on the outside of the threaded telescopic rod, a transmission gear part is rotatably installed on the central axis of the base, a transmission ring is fixedly installed on the transmission gear part, and the transmission ring and the two threaded telescopic rods are connected to the transmission ring through two second belts, a second gear is rotatably installed on the outer wall of the transmission gear part, the second gear is rotatably installed on the base, a third screw is installed on the internal thread of the second gear, a direction limit block is fixedly installed on the top of the third screw, a fourth limit column is rotatably installed inside the direction limit block, and the fourth limit column is connected to the rolling device.

[0008] As a further optimization scheme of the present invention, the transmission gear member includes a third gear rotatably mounted on the central axis of the base, a fifth fixed block is fixedly mounted on the base, a gear clamping rod is slidably mounted inside the fifth fixed block, a fourth telescopic rod is fixedly mounted on the end of the gear clamping rod away from the third gear, and the bottom of the fourth telescopic rod is fixedly connected to the base.

[0009] As a further optimization scheme of the present invention, the rolling device includes a U-shaped fixed block fixedly installed on the outside of the first fixed column, a first threaded rod is rotatably installed on the U-shaped fixed block, a threaded slider is threaded on the outer wall of the first threaded rod, a lifting gear part is rotatably installed on the U-shaped fixed block, a first gear is fixedly installed on the end of the first threaded rod, the first gear is meshed with the lifting gear part, a first telescopic rod is fixedly installed on the bottom of the threaded slider, a third limit block is fixedly installed on the bottom of the first telescopic rod, a third rolling rod is rotatably installed inside the third limit block, a first rack is fixedly installed on the bottom of the top extrusion seat, the first rack is meshed with the lifting gear part, and a ratchet is provided in connection with the first rack and the lifting gear part.

[0010] As a further optimization scheme of the present invention, the clamping device includes a clamping transmission member fixedly installed on the top end of the threaded telescopic rod, the clamping transmission member is connected to a follower member and a first telescopic member, the first telescopic member is rotatably mounted with a first clamping rod and a second clamping rod, the follower member is connected to a follower block, a follower slide groove is arranged inside the follower block, the follower block is fixedly connected to the fourth limit column, a torsion spring is arranged at the connection part between the fourth limit column and the direction limit block, a second fixed column is fixedly installed on the first fixed column, and the second fixed column squeezes the top of the direction limit block.

[0011] As a further optimization scheme of the present invention, the clamping transmission member includes a second limit block fixedly installed on the top end of the threaded telescopic rod, the interior of the clamping transmission member is rotatably connected to the first telescopic member, the side wall of the second limit block is provided with a first belt, the top end of the second limit block is fixedly installed with a second fixed block, the second fixed block is rotatably installed with a first rotating rod, the first telescopic member and the first rotating rod are driven by the first belt, and the first rotating rod is connected to the follower member.

[0012] As a further optimization scheme of the present invention, the first telescopic member includes a first fixed plate rotatably mounted inside a second limit block, the outside of the first fixed plate is connected to the first belt, a first motor is fixedly mounted inside the first fixed plate, a first limit block is symmetrically mounted outside the first motor, a first clamping rod and a second clamping rod are rotatably mounted on the two first limit blocks, and the first motor drives the first clamping rod and the second clamping rod to synchronously approach or move away from the center of the first motor.

[0013] As a further optimization scheme of the present invention, the follower includes a first follower plate fixedly mounted on the first rotating rod, a second clamping plate is symmetrically mounted on the first follower plate, a first limit plate is fixedly mounted on the second clamping plate, and a follower roller is rotatably mounted inside the first limit plate.

[0014] As a further optimization solution of the present invention, the third rolling rod is rotatably mounted with the following member which is the same as that on the first rotating rod.

[0015] As a further optimization solution of the present invention, the distance between the two threaded telescopic rods is greater than the width of the top extrusion seat.

[0016] The beneficial effects of the present invention are:

[0017] The special-shaped steel structure bending device described in the present invention drives the clamping transmission member and the first telescopic member to rotate through the follower member inside the clamping device, thereby adjusting the angle of the first clamping rod and the second clamping rod on the first telescopic member to clamp the steel plate, completing the effect of the first clamping rod and the second clamping rod clamping the steel plate after bending, and compressing the transmission device through the second fixed column to change the height of the first clamping rod and the second clamping rod, completing the first clamping rod and the second clamping rod adapting to the height of the steel plate after bending, thereby improving the safety when bending the steel plate, and driving the third rolling rod to move along the direction after the steel plate is bent through the movement of the threaded slider on the rolling device, thereby reducing the stress generated by the bending of the steel plate after the steel plate is bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the appearance diagram of the overall device of the present invention;

[0019] Figure 2 It is the overall device position diagram of the present invention;

[0020] Figure 3 It is the internal transmission diagram of the overall device of the present invention;

[0021] Figure 4 It is the position diagram of the transmission device of the present invention;

[0022] Figure 5 It is a transmission diagram of the roller pressing device of the present invention;

[0023] Figure 6 It is a diagram showing the coordination of the roller pressing device and the transmission device of the present invention;

[0024] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 It is a transmission connection diagram of the roller pressing device and the transmission device of the present invention.

[0026] In the figure:

[0027] 1. Base; 11. Steel plate; 12. Top extrusion seat; 13. First bending block; 14. Second bending block; 141. First fixing column; 142. Second fixing column;

[0028] 2. Clamping device; 21. First clamping rod; 22. Second clamping rod; 23. First telescopic member; 231. First limit block; 232. First motor; 233. First fixed plate; 24. Clamping transmission member; 241. Second limit block; 242. First belt; 243. Second fixed block; 244. First rotating rod; 25. Following member; 251. First following plate; 252. Second clamping plate; 253. First limit plate; 254. Following roller; 26. Following block; 261. Following slide;

[0029] 3. Rolling device; 31. U-shaped fixing block; 32. First threaded rod; 33. First rack; 34. Lifting gear member; 35. Threaded slider; 36. First gear; 37. First telescopic rod; 38. Third limit block; 39. Third rolling rod;

[0030] 4. Transmission device; 41. Threaded telescopic rod; 42. Second belt; 43. Transmission ring; 44. Transmission gear member; 441. Third gear; 442. Fifth fixed block; 443. Gear clamping rod; 444. Fourth telescopic rod; 45. Third screw rod; 46. Second gear; 47. Fourth limiting column; 48. Direction limiting block. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0032] like Figures 1 to 3 As shown, a special-shaped steel structure bending device according to an embodiment of the present invention comprises a base 1, a top extrusion seat 12 is fixedly mounted on the base 1, a first bending block 13 is fixedly mounted on the central top of the base 1, a steel plate 11 is placed on the first bending block 13, a second bending block 14 is fixedly mounted on the central bottom of the top extrusion seat 12, a telescopic rod is arranged at the connection position between the top extrusion seat 12 and the second bending block 14, and the base 1 is provided with a clamping device 2, and the clamping device 2 is used to clamp the steel plate 11;

[0033] like Figures 5 to 8The clamping device 2 shown includes a first clamping rod 21, a second clamping rod 22, a follower 25 and a follower block 26. The first clamping rod 21 and the second clamping rod 22 clamp the steel plate 11. Followers 25 are provided at both ends of the first clamping rod 21 and the second clamping rod 22. The follower 25 slides on the follower block 26. After the steel plate 11 is squeezed, the follower 25 and the follower block 26 adjust the angle at which the second clamping rod 22 and the first clamping rod 21 clamp the steel plate 11. A transmission device 4 is provided at the bottom of the follower block 26. The transmission device 4 adjusts the height of the first clamping rod 21 and the second clamping rod 22. A first fixed column 141 is fixedly installed on the second bending block 14. A rolling device 3 is provided on the first fixed column 141. The rolling device 3 rolls after the steel plate 11 is bent to reduce the stress of the steel plate 11.

[0034] It should be noted that, in the initial state, the first bending block 13 and the second bending block 14 are in the maximum distance state, and then the steel plate 11 is passed through the center position of the first clamping rod 21 and the second clamping rod 22, and the steel plate 11 is placed on the first bending block 13, and then the telescopic rod on the second bending block 14 is started, so that the second bending block 14 approaches the direction of the first bending block 13. When the first bending block 13 is engaged with the second bending block 14, the second fixing column 142 is fixedly installed on the first fixing column 141, and the second fixing column 142 squeezes the transmission device 4, thereby driving the clamping device 2 to rise and adjust the angle, so that the direction of the clamping device 2 changes with the bending direction of the steel plate 11, and the direction of the follower block 26 is the same as the direction of the steel plate 11 after bending, and the follower 25 drives the first clamping rod 2 1 and the second clamping rod 22 adjust the direction to adapt to the angle of the steel plate 11 after bending. A rolling device 3 is arranged on the first fixed column 141. When the second bending block 14 finishes squeezing the steel plate 11 and the second bending block 14 is reset, the rolling device 3 drives the clamping device 2 to roll the steel plate 11 to reduce the stress of the steel plate 11 after bending, until the second bending block 14 completely rises to the highest point, the rolling device 3 drives the clamping device 2 to complete the rolling effect and reset. When this device is in use, the steel plate 11 can be clamped, thereby reducing the danger of holding the steel plate 11 when bending. Then, the rolling device 3 drives the clamping device 2 to roll the steel plate 11 after bending, thereby reducing the stress of the steel plate 11 after bending and preventing the steel plate 11 from rebounding.

[0035] like Figure 3 to Figure 4As shown, the transmission device 4 includes a threaded telescopic rod 41 symmetrically installed on the base 1, the threaded telescopic rod 41 is rotatably connected to the base 1, the top of the threaded telescopic rod 41 is connected to the clamping device 2, a second belt 42 is arranged on the outside of the threaded telescopic rod 41, a transmission gear member 44 is rotatably installed on the central axis of the base 1, a transmission ring 43 is fixedly installed on the transmission gear member 44, and the transmission ring 43 and the two threaded telescopic rods 41 are connected to the transmission ring 43 through two second belts 42, a second gear 46 is rotatably installed on the outer wall of the transmission gear member 44, the second gear 46 is rotatably installed on the base 1, a third screw 45 is threadedly installed on the inner wall of the second gear 46, a direction limiting block 48 is fixedly installed on the top of the third screw 45, a fourth limiting column 47 is rotatably installed inside the direction limiting block 48, and the fourth limiting column 47 is connected to the rolling device 3.

[0036] It should be noted that when the second fixing column 142 squeezes the fourth limiting column 47, the fourth limiting column 47 descends and drives the third screw rod 45 to descend, and the third screw rod 45 is threadedly connected to the second gear 46, thereby driving the second gear 46 to rotate, and the rotation of the second gear 46 drives the transmission gear member 44 and the transmission ring 43 to rotate, thereby driving the threaded telescopic rod 41 to rotate, and the threaded telescopic rod 41 is provided with a screw inside, thereby driving the screw inside the threaded telescopic rod 41 to rise, and can drive the clamping device 2 to adjust the angle of the first clamping rod 21 and the second clamping rod 22, and the connection position of the fourth limiting column 47 and the follower block 26 is provided with a torsion spring, so that the two follower blocks 26 are in a normal state. Figure 4 state, after the second bending block 14 bends the steel plate 11, the second bending block 14 rises completely, limiting the transmission gear member 44 to prevent the torsion spring at the connection position of the fourth limiting column 47 and the follower block 26 from being stressed, so that the angle of the second clamping rod 22 and the first clamping rod 21 is reset, and the clamping device 2 is operated to unfold the first clamping rod 21 and the second clamping rod 22, and the steel plate 11 is taken out, and the transmission gear member 44 can be operated to reset the follower block 26 and the threaded telescopic rod 41.

[0037] like Figure 6 and Figure 8 As shown, the transmission gear member 44 includes a third gear 441 rotatably mounted on the central axis of the base 1, a fifth fixed block 442 is fixedly mounted on the base 1, a gear clamping rod 443 is slidably mounted inside the fifth fixed block 442, a fourth telescopic rod 444 is fixedly mounted on the end of the gear clamping rod 443 away from the third gear 441, and the bottom of the fourth telescopic rod 444 is fixedly connected to the base 1.

[0038] It should be noted that, by starting the fourth telescopic rod 444 to fully extend it, the gear clamping rod 443 can slide inside the fifth fixed block 442, so that the gear clamping rod 443 can lock the third gear 441, preventing the first clamping rod 21 and the second clamping rod 22 from resetting after the steel plate 11 is bent. After that, the steel plate 11 can be taken out by operating the clamping device 2, and the fourth telescopic rod 444 can be started to retract, so that the third gear 441 is reset under the action of the follower block 26.

[0039] like Figure 5 to Figure 6 As shown, the rolling device 3 includes a U-shaped fixed block 31 fixedly mounted on the outside of the first fixed column 141, a first threaded rod 32 is rotatably mounted on the U-shaped fixed block 31, a threaded slider 35 is threadedly mounted on the outer wall of the first threaded rod 32, a lifting gear part 34 is rotatably mounted on the U-shaped fixed block 31, a first gear 36 is fixedly mounted on the end of the first threaded rod 32, the first gear 36 is meshed with the lifting gear part 34, a first telescopic rod 37 is fixedly mounted on the bottom of the threaded slider 35, a third limiting block 38 is fixedly mounted on the bottom of the first telescopic rod 37, a third rolling rod 39 is rotatably mounted inside the third limiting block 38, a first rack 33 is fixedly mounted on the bottom of the top extrusion seat 12, the first rack 33 is meshed with the lifting gear part 34, and a ratchet is connected to the first rack 33 and the lifting gear part 34.

[0040] It should be noted that a ratchet is provided at the connection portion between the first rack 33 and the threaded slider 35. Therefore, when the second bending block 14 descends, the first rack 33 meshes with the lifting gear part 34 and will not drive the first gear 36 to rotate. Therefore, the rolling device 3 will not drive the clamping device 2 to roll the steel plate 11. When the second bending block 14 rises, the first rack 33 and the ratchet inside the lifting gear part 34 can drive the first gear 36 to rotate, thereby driving the threaded slider 35, the first telescopic rod 37, the third limit block 38 and the third rolling rod 39 to move. The threaded slider 35 moves along the length direction of the first threaded rod 32, and the end of the third rolling rod 39 is provided with the same structure as the follower 25. Therefore, it can follow the bending direction of the steel plate 11 for rolling, thereby reducing the stress of the steel plate 11 after bending and preventing the steel plate 11 from rebounding.

[0041] like Figures 6 to 8As shown, the clamping device 2 includes a clamping transmission member 24 fixedly mounted on the top of the threaded telescopic rod 41, the clamping transmission member 24 is connected to a follower member 25 and a first telescopic member 23, the first telescopic member 23 is rotatably mounted with a first clamping rod 21 and a second clamping rod 22, the follower member 25 is connected to a follower block 26, a follower slide groove 261 is arranged inside the follower block 26, the follower block 26 is fixedly connected to the fourth limit column 47, a torsion spring is arranged at the connection portion between the fourth limit column 47 and the direction limit block 48, the first fixed column 141 is fixedly mounted with a second fixed column 142, and the second fixed column 142 squeezes the top of the direction limit block 48.

[0042] It should be noted that when the second bending block 14 descends and drives the second fixed column 142 to squeeze the direction limit block 48, the angle of the two follower blocks 26 is changed. Then, the follower member 25 slides inside the follower block 26 to drive the follower member 25 to rotate. The rotation of the follower member 25 drives the clamping transmission member 24 and the first telescopic member 23 to rotate and adjust the angle. The rotation of the first telescopic member 23 can drive the second clamping rod 22 and the first clamping rod 21 to rotate, so that the first clamping rod 21 and the second clamping rod 22 adapt to the angle of the steel plate 11 after bending. The first telescopic member 23 is provided at both ends of the first clamping rod 21 and the second clamping rod 22. After the steel plate 11 is bent and rolled, the first clamping rod 21 and the second clamping rod 22 can be moved away from each other, and the steel plate 11 can be taken out. Then, the first telescopic member 23 drives the first clamping rod 21 and the second clamping rod 22 to approach each other, and the steel plate 11 is placed in the gap reserved by the first clamping rod 21 and the second clamping rod 22, and then the bending work can be performed again.

[0043] like Figure 7 As shown, the clamping transmission member 24 includes a second limit block 241 fixedly mounted on the top of the threaded telescopic rod 41, the interior of the clamping transmission member 24 is rotatably connected to the first telescopic member 23, the side wall of the second limit block 241 is provided with a first belt 242, the top of the second limit block 241 is fixedly mounted with a second fixed block 243, the second fixed block 243 is rotatably mounted with a first rotating rod 244, the first telescopic member 23 and the first rotating rod 244 are transmitted through the first belt 242, and the first rotating rod 244 is connected to the follower 25.

[0044] It should be noted that when the follower 25 drives the first rotating rod 244 to rotate, the first rotating rod 244 drives the first belt 242 to rotate, and the rotation of the first belt 242 drives the first telescopic member 23 to rotate, thereby achieving the effect of driving the first clamping rod 21 and the second clamping rod 22 to adjust the angle.

[0045] like Figure 7As shown, the first telescopic member 23 includes a first fixed plate 233 rotatably mounted inside a second limit block 241, the outside of the first fixed plate 233 is connected to the first belt 242, a first motor 232 is fixedly mounted inside the first fixed plate 233, a first limit block 231 is symmetrically mounted outside the first motor 232, a first clamping rod 21 and a second clamping rod 22 are rotatably mounted on the two first limit blocks 231, and the first motor 232 drives the first clamping rod 21 and the second clamping rod 22 to synchronously approach or move away from the center of the first motor 232.

[0046] It should be noted that the first fixed plate 233 is rotatably installed inside the second limit block 241. Therefore, when the first belt 242 drives the first fixed plate 233 to rotate, it can drive the first motor 232 and the first limit block 231 to adjust the angle, thereby driving the first clamping rod 21 and the second clamping rod 22 to adapt to the angle and height changes of the steel plate 11 after bending. Starting the first motor 232 can drive the first clamping rod 21 and the second clamping rod 22 to approach each other and the principle, thereby facilitating the removal of the bent steel plate 11.

[0047] like Figure 7 As shown, the follower 25 includes a first follower plate 251 fixedly mounted on the first rotating rod 244, a second clamping plate 252 is symmetrically mounted on the first follower plate 251, a first limiting plate 253 is fixedly mounted on the second clamping plate 252, and a follower roller 254 is rotatably mounted inside the first limiting plate 253.

[0048] It should be noted that the follower roller 254 rolls on the follower slot 261, so when the angle of the follower block 26 changes, it can drive the first follower plate 251 to rotate, thereby driving the first rotating rod 244 to rotate, adjusting the angle of the first telescopic member 23 and the second clamping rod 22 and the first clamping rod 21.

[0049] like Figure 7 As shown, the third rolling rod 39 is rotatably mounted with the following member 25 which is the same as that on the first rotating rod 244 .

[0050] It should be noted that the third rolling rod 39 is provided with a follower 25 which is the same as that on the first rotating rod 244. Therefore, after the steel plate 11 is bent, the follower 25 on the third rolling rod 39 slides on the follower groove 261, so that the third rolling rod 39 can roll along the bending angle of the steel plate 11, thereby reducing the stress of the steel plate 11 after rolling.

[0051] like Figure 5 As shown, the distance between the two threaded telescopic rods 41 is greater than the width of the top extrusion seat 12 .

[0052] It should be noted that the distance between the two threaded telescopic rods 41 is greater than the width of the top extrusion seat 12, so that the second bending block 14 will not interfere with the clamping device 2 when it is raised or lowered, thereby improving safety.

[0053] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A bending device for a special-shaped steel structure, comprising a base (1), a top extrusion seat (12) being fixedly mounted on the base (1), a first bending block (13) being fixedly mounted on the central top end of the base (1), a steel plate (11) being placed on the first bending block (13), a second bending block (14) being fixedly mounted on the central bottom end of the top extrusion seat (12), a telescopic rod being arranged at the connection position between the top extrusion seat (12) and the second bending block (14), characterized in that: The base (1) is provided with a clamping device (2), and the clamping device (2) is used to clamp the steel plate (11); The clamping device (2) comprises a first clamping rod (21), a second clamping rod (22), a follower (25) and a follower block (26); the first clamping rod (21) and the second clamping rod (22) clamp the steel plate (11); both ends of the first clamping rod (21) and the second clamping rod (22) are provided with follower members (25); the follower members (25) slide on the follower block (26); after the steel plate (11) is squeezed, the follower member (25) and the follower block (26) adjust the angle at which the second clamping rod (22) and the first clamping rod (21) clamp the steel plate (11); A transmission device (4) is provided at the bottom of the following block (26), and the transmission device (4) adjusts the height of the first clamping rod (21) and the second clamping rod (22). A first fixing column (141) is fixedly mounted on the second bending block (14), and a rolling device (3) is provided on the first fixing column (141). The rolling device (3) rolls the steel plate (11) after it is bent to reduce the stress of the steel plate (11).

2. The device for bending a special-shaped steel structure according to claim 1, characterized in that: The transmission device (4) comprises a threaded telescopic rod (41) symmetrically mounted on the base (1), the threaded telescopic rod (41) being rotatably connected to the base (1), the top end of the threaded telescopic rod (41) being connected to the clamping device (2), a second belt (42) being arranged on the outside of the threaded telescopic rod (41), a transmission gear member (44) being rotatably mounted on the central axis of the base (1), a transmission ring (43) being fixedly mounted on the transmission gear member (44), the transmission ring (43), the two threaded telescopic rods (41) The second belts (42) are connected to the transmission ring (43); a second gear (46) is rotatably mounted on the outer wall of the transmission gear member (44); the second gear (46) is rotatably mounted on the base (1); a third screw rod (45) is threadedly mounted on the inner surface of the second gear (46); a direction limiting block (48) is fixedly mounted on the top end of the third screw rod (45); a fourth limiting column (47) is rotatably mounted inside the direction limiting block (48); and the fourth limiting column (47) is connected to the rolling device (3).

3. The device for bending a special-shaped steel structure according to claim 2, characterized in that: The transmission gear member (44) comprises a third gear (441) rotatably mounted on the central axis of the base (1); a fifth fixed block (442) is fixedly mounted on the base (1); a gear clamping rod (443) is slidably mounted inside the fifth fixed block (442); a fourth telescopic rod (444) is fixedly mounted on the end of the gear clamping rod (443) away from the third gear (441); and the bottom of the fourth telescopic rod (444) is fixedly connected to the base (1).

4. The device for bending a special-shaped steel structure according to claim 3, characterized in that: The rolling device (3) comprises a U-shaped fixed block (31) fixedly mounted on the outside of a first fixed column (141); a first threaded rod (32) is rotatably mounted on the U-shaped fixed block (31); a threaded slider (35) is threadedly mounted on the outer wall of the first threaded rod (32); a lifting gear member (34) is rotatably mounted on the U-shaped fixed block (31); a first gear (36) is fixedly mounted on the end of the first threaded rod (32); the first gear (36) is meshed with the lifting gear member (34); a first telescopic rod (37) is fixedly mounted on the bottom of the threaded slider (35); a third limiting block (38) is fixedly mounted on the bottom of the first telescopic rod (37); a third rolling rod (39) is rotatably mounted inside the third limiting block (38); a first rack (33) is fixedly mounted on the bottom of the top extrusion seat (12); the first rack (33) is meshed with the lifting gear member (34); and a ratchet is provided to connect the first rack (33) and the lifting gear member (34).

5. The device for bending a special-shaped steel structure according to claim 4, characterized in that: The clamping device (2) comprises a clamping transmission member (24) fixedly mounted on the top of a threaded telescopic rod (41); a following member (25) and a first telescopic member (23) are connected to the clamping transmission member (24); a first clamping rod (21) and a second clamping rod (22) are rotatably mounted on the first telescopic member (23); a following block (26) is connected to the following member (25); a following slide groove (261) is provided inside the following block (26); the following block (26) is fixedly connected to the fourth limiting column (47); a torsion spring is provided at a connection portion between the fourth limiting column (47) and the direction limiting block (48); a second fixing column (142) is fixedly mounted on the first fixing column (141); the second fixing column (142) squeezes the top of the direction limiting block (48).

6. The device for bending a special-shaped steel structure according to claim 5, characterized in that: The clamping transmission member (24) comprises a second limit block (241) fixedly mounted on the top end of the threaded telescopic rod (41); the interior of the clamping transmission member (24) is rotatably connected to the first telescopic member (23); a first belt (242) is provided on the side wall of the second limit block (241); a second fixed block (243) is fixedly mounted on the top end of the second limit block (241); a first rotating rod (244) is rotatably mounted on the second fixed block (243); the first telescopic member (23) and the first rotating rod (244) are driven by the first belt (242); and the first rotating rod (244) is connected to the follower member (25).

7. The device for bending a special-shaped steel structure according to claim 6, characterized in that: The first telescopic member (23) comprises a first fixing plate (233) rotatably mounted inside a second limiting block (241); the outside of the first fixing plate (233) is connected to the first belt (242); a first motor (232) is fixedly mounted inside the first fixing plate (233); a first limiting block (231) is symmetrically mounted outside the first motor (232); a first clamping rod (21) and a second clamping rod (22) are rotatably mounted on the two first limiting blocks (231); the first motor (232) drives the first clamping rod (21) and the second clamping rod (22) to synchronously approach or move away from the center of the first motor (232).

8. The device for bending a special-shaped steel structure according to claim 7, characterized in that: The follower member (25) comprises a first follower plate (251) fixedly mounted on a first rotating rod (244); a second clamping plate (252) is symmetrically mounted on the first follower plate (251); a first limit plate (253) is fixedly mounted on the second clamping plate (252); and a follower roller (254) is rotatably mounted inside the first limit plate (253).

9. The device for bending a special-shaped steel structure according to claim 8, characterized in that: The third roller rod (39) is rotatably mounted with the following member (25) which is the same as that on the first rotating rod (244).

10. The device for bending a special-shaped steel structure according to claim 9, characterized in that: The distance between the two threaded telescopic rods (41) is greater than the width of the top extrusion seat (12).

Images