Hot-state steel pipe straightening machine

Abstract

The invention discloses a hot-state steel pipe straightening machine, which belongs to the technical field of steel pipe straightening machines, and comprises a bottom frame, a heating frame is arranged on the bottom frame, and a carbon fiber heating pipe is arranged in the heating frame; a plurality of mounting plates are arranged on the two sides of the top face of the heating frame, a first movable roller used for supporting a steel pipe is rotationally mounted between the two opposite mounting plates on the two sides of the top face of the heating frame, a portal is arranged on the top face of the bottom frame, a first air cylinder is arranged on the portal, and a straightening roller is arranged at the bottom end of a piston rod of the first air cylinder. A driving mechanism used for driving the first air cylinder to move in the length direction of the portal frame is arranged on the portal frame, conveying mechanisms are arranged on the two sides of the bottom frame, the conveying mechanism on the left side of the bottom frame is used for conveying a steel pipe to be straightened to the first movable roller, and the conveying mechanism on the right side of the bottom frame is used for taking down the straightened steel pipe on the first movable roller. The device has the effect that workers are prevented from being burnt by the carbon fiber heating pipe when placing and taking the steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe straightening machines, in particular to a hot steel pipe straightening machine. Background Art

[0002] Steel pipe has a hollow cross-section and its length is much larger than its diameter or circumference. It is divided into round, square, rectangular and special-shaped steel pipes according to the cross-sectional shape; it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe according to the material; it is divided into steel pipes for transportation pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc. according to the purpose.

[0003] In the related art, a Chinese utility model patent with announcement number CN221388242U discloses a hot steel pipe straightening device, including a straightening device body, a supporting component, a clamping component, a limiting component, a straightening component, and a heating component; the supporting component is fixedly arranged on the outside of the straightening device body, the clamping component is fixedly arranged on the left side of the straightening device body, the limiting component is fixedly arranged on the right side of the straightening device body, the straightening component is movably arranged on the upper end of the straightening device body, and the heating component is fixedly arranged on the upper end of the supporting component; the supporting component includes an operating component, a supporting frame, a workbench, and a movable hanger; the supporting frame is fixedly arranged at the lower end of the straightening device body, the workbench is fixedly arranged at the upper end of the supporting frame, and two groups of movable hangers are mirror-fixed on both sides of the workbench; the operating component includes a working frame, a trustee support, and a movable roller; the working frame is fixedly arranged at the center position of the upper end of the workbench, a number of the trustee supports are fixedly arranged on the upper end of the working frame, and a number of the movable rollers are rotatably arranged inside a number of the trustee supports.

[0004] In the above-mentioned related technology, the staff places the steel pipe on the movable roller, then fixes the steel pipe through the limiting component and the clamping component, and finally straightens the steel pipe through the straightening component. After the steel pipe is straightened, the staff removes the steel pipe. Because the heating component keeps heating the steel pipe during the straightening process, the staff may be burned by the heating component when placing and removing the steel pipe. Summary of the invention

[0005] In order to improve the problem that workers may be burned by heating components when placing or removing steel pipes, the present application provides a hot steel pipe straightening machine.

[0006] The hot steel pipe straightening machine provided in this application adopts the following technical solution: A hot steel pipe straightening machine comprises a base frame, a heating frame is arranged on the base frame, a carbon fiber heating tube is arranged in the heating frame; a plurality of mounting plates are arranged on both sides of the top surface of the heating frame, a movable roller for supporting the steel pipe is rotatably installed between two mounting plates opposite to each other on both sides of the top surface of the heating frame, a gantry is arranged on the top surface of the base frame, a cylinder is arranged on the gantry, a straightening roller is arranged at the bottom end of the piston rod of the cylinder, a driving mechanism for driving the cylinder to move along the length direction of the gantry is arranged on the gantry, feeding mechanisms are arranged on both sides of the base frame, the feeding mechanism on the left side of the base frame is used to transport the steel pipe to be straightened to the movable roller, and the feeding mechanism on the right side of the base frame is used to remove the steel pipe straightened on the movable roller.

[0007] By adopting the above technical scheme, the steel pipe to be straightened is placed on multiple active rollers through the feeding mechanism on the left side of the base frame, and then the steel pipe is heated by the carbon fiber heating tube. Then, the driving mechanism drives the cylinder one to drive the straightening roller to move to the bending part of the steel pipe, and then the piston rod of the cylinder one drives the straightening roller to move downward, so that the straightening roller presses the steel pipe to straighten the steel pipe. When the straightening of the steel pipe is completed, the straightened steel pipe is removed by the conveying mechanism on the right side of the base frame, thereby reducing the staff from placing the steel pipe on the active roller one and then removing the steel pipe from the active roller one, thereby reducing the possibility of the staff being burned by the carbon fiber heating tube when placing and removing the steel pipe.

[0008] Preferably, the driving mechanism includes a screw rod rotatably installed between the opposite inner side surfaces of the door frame, a moving block is sleeved on the screw rod 1, the moving block is threadedly connected to the screw rod 1, the cylinder 1 is fixed to the bottom surface of the moving block, a motor 1 is arranged on the side of the door frame, the output shaft of the motor 1 is fixedly connected to one end of the screw rod 1, and a limit member for limiting the moving block to follow the rotation of the screw rod 1 is arranged on the door frame.

[0009] By adopting the above technical solution, when the feeding mechanism conveys the steel pipe to be straightened to the movable roller 1, the motor 1 is started, the output shaft of the motor 1 drives the screw 1 to rotate, the screw 1 drives the moving block to move along the axial direction of the screw 1, so that the moving block drives the cylinder 1 to move, and the cylinder 1 drives the straightening roller to move to the steel pipe belt straightening position.

[0010] Preferably, the limiting member comprises a limiting rod fixed between opposite inner side surfaces of the door frame, the limiting rod passes through the moving block, and the moving block is slidably connected to the limiting rod along the axial direction of the limiting rod.

[0011] By adopting the above technical solution, when the screw rod 1 rotates to drive the moving block to move along the axial direction of the screw rod 1, the moving block slides with the limiting rod, thereby reducing the possibility that the moving block rotates with the screw rod 1.

[0012] Preferably, the feeding mechanism includes a support frame arranged on one side of the base frame, moving rods are slidably arranged on both sides of the top surface of the support frame, a vertical rod is fixed to the end of the moving rod close to the base frame, an inclined support rod is fixed to the side of the vertical rod close to the base frame, and the end of the support rod away from the vertical rod is inclined upward, and a driving component for driving the moving rod to move along the width direction of the support frame is arranged on the support frame, cylinder 2 is fixed on both ends of the top surface of the base frame, a mounting frame 1 is fixed to the top end of the piston rod of the cylinder 2, and an active roller 2 is rotatably installed between the opposite inner sides of the mounting frame 1.

[0013] By adopting the above technical scheme, the steel pipe to be straightened is placed on two support rods, and then the driving component drives the moving rod to move toward the direction close to the base frame, so that the support rod drives the steel pipe to move above the movable roller one, and then the cylinder two is started, and the piston rod of the cylinder two drives the mounting frame to move upward, so that the mounting frame drives the movable roller two to move upward, so that the movable roller two lifts the steel pipe to be straightened, and then the driving component drives the moving rod to move toward the direction away from the base frame to the initial position, and then the cylinder two is started again, so that the piston rod of the cylinder two drives the mounting frame one to move downward, so that the mounting frame drives the movable roller two to move downward, thereby placing the straightened steel pipe on the movable roller one.

[0014] Preferably, both sides of the top surface of the support frame 1 are provided with sliding grooves, and a slider is fixed to the bottom surface of the movable rod, and the slider is slidably arranged in the sliding groove. The driving assembly includes a screw rod 2 rotatably installed between the opposite inner sides of the sliding groove, and the screw rod 2 passes through the slider, and the screw rod 2 is threadedly connected to the slider. The support frame is provided with a synchronization component for simultaneously driving the two screw rods 2 to rotate simultaneously.

[0015] By adopting the above technical solution, the synchronous part is started, the synchronous part drives the two screw rods to rotate simultaneously, the screw rods drive the two moving rods to move along the width direction of the support frame, so that the moving rods drive the support rods to move, and the support rods drive the steel pipes to move.

[0016] Preferably, the synchronization component includes a pulley 1 arranged on the two screw rods 2, a transmission belt 1 is wound around the two pulleys 1, a motor 2 is arranged on the side of the support frame away from the base frame, and the output shaft of the motor 2 is fixedly connected to one end of one of the screw rods 2.

[0017] By adopting the above technical solution, motor 2 is started, and the output of motor 2 drives one of the screws 2 to rotate, so that screw 2 drives pulley 1 to rotate, pulley 1 drives transmission belt 1 to rotate, transmission belt 1 drives another pulley 1 to rotate, so that the other pulley 1 drives the other screw 2 to rotate, so that the two screws 2 rotate at the same time.

[0018] Preferably, two cylinders three are arranged on one side of the support frame close to the base frame, a mounting frame two is fixed to the top end of the piston rod of the cylinder three, and a movable roller three is rotatably installed between the opposite inner sides of the mounting frame two.

[0019] By adopting the above technical solution, the steel pipe to be straightened is placed on two movable rollers three, and then the cylinder three is started. The piston rod of the cylinder three drives the mounting frame two to move upward, and the mounting frame two drives the movable roller three to move upward, so that the movable roller three drives the steel pipe to be straightened to move upward, and the steel pipe to be straightened is moved to the position of the support rod, and then the support rod is driven to move by the moving rod, so that the support rod removes the steel pipe, thereby facilitating the staff to place the steel pipe on the support rod.

[0020] Preferably, two side plates arranged parallel to each other are fixed at both ends of the top surface of the base frame, two rotating shafts are rotatably installed between the two side plates, rollers for turning the steel pipes are arranged on the two rotating shafts, and a power mechanism for driving the two rotating shafts to rotate simultaneously is arranged on the side plates.

[0021] By adopting the above technical solution, the power mechanism is started, and the power mechanism drives the two shafts to rotate simultaneously, so that the two shafts drive the rollers to rotate, and the rollers drive the steel pipes to rotate, thereby facilitating the adjustment of the bending position of the steel pipe and further facilitating the straightening of the steel pipe.

[0022] Preferably, the power mechanism includes a pulley two arranged on the two rotating shafts, a transmission belt two is wound around the two pulleys two, a fixed plate is arranged on the top surface of the base frame, a motor three is arranged on the side of the fixed plate, a pulley three is arranged on the output shaft of the motor three and one of the rotating shafts, and a transmission belt three is wound around the two pulleys three.

[0023] By adopting the above technical solution, motor three is started, the output shaft of motor three drives pulley three to rotate, pulley three drives transmission belt three to rotate, transmission belt three drives another rotating shaft to rotate, the rotating shaft drives pulley two to rotate, pulley two drives transmission belt two to rotate, and transmission belt two drives another pulley two to rotate, so that the two rotating shafts rotate at the same time.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The steel pipe to be straightened is placed on multiple active rollers 1 through the feeding mechanism on the left side of the chassis, and then the steel pipe is heated by the carbon fiber heating tube. Then, the driving mechanism drives the cylinder 1 to drive the straightening roller to move to the bending part of the steel pipe, and then the piston rod of the cylinder 1 drives the straightening roller to move downward, so that the straightening roller presses the steel pipe to straighten the steel pipe. When the steel pipe is straightened, the straightened steel pipe is removed through the conveying mechanism on the right side of the chassis, thereby reducing the possibility of workers placing the steel pipe on the active roller 1 and then removing the steel pipe from the active roller 1, thereby reducing the possibility of workers being burned by the carbon fiber heating tube when placing and removing the steel pipe; 2. Place the steel pipe to be straightened on two support rods, then the driving assembly drives the moving rod to move toward the direction close to the base frame, so that the support rod drives the steel pipe to move above the movable roller 1, and then start the second cylinder, the piston rod of the second cylinder drives the mounting frame to move upward, so that the mounting frame drives the movable roller 2 to move upward, so that the movable roller 2 lifts the steel pipe to be straightened, then the driving assembly drives the moving rod to move away from the base frame to the initial position, and then start the second cylinder, so that the piston rod of the second cylinder drives the mounting frame 1 to move downward, so that the mounting frame drives the movable roller 2 to move downward, so that the straightened steel pipe is placed on the movable roller 1; 3. Place the steel pipe to be straightened on two movable rollers three, then start cylinder three, the piston rod of cylinder three drives mounting frame two to move upward, mounting frame two drives movable roller three to move upward, movable roller three drives the steel pipe to be straightened to move upward, and moves the steel pipe to be straightened to the position of the support rod, and then drives the support rod to move through the moving rod, so that the support rod removes the steel pipe, making it convenient for the staff to place the steel pipe on the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the hot steel pipe straightening machine according to an embodiment of the present application.

[0026] Figure 2 It is a cross-sectional view of the door frame in the embodiment of the present application.

[0027] Figure 3 It is a cross-sectional view of the support frame in the embodiment of the present application.

[0028] 1. Base frame; 2. Heating frame; 3. Carbon fiber heating tube; 4. Mounting plate; 5. Active roller 1; 6. Door frame; 7. Screw rod 1; 8. Moving block; 9. Motor 1; 10. Cylinder 1; 11. Straightening roller; 12. Limit rod; 13. Side plate; 14. Rotating shaft; 15. Roller; 16. Pulley 2; 17. Transmission belt 2; 18. Motor 3; 19. Motor 4; 20. Pulley 3; 21. Vertical rod; 22. Support rod; 23. Sliding block; 24. Cylinder 1; 25. Straightening roller; 26. Limit rod; 3. Side plate; 31. Rotating shaft; 32. Roller; 33. Pulley 2; 34. Transmission belt 2; 35. Motor 3; 36. Pulley 3; 37. Transmission belt 3; 38. Fixed plate; 4. Feeding mechanism; 41. Support frame; 42. Moving rod; 43. Vertical rod; 44. Support rod; 45. Slide; 46. Slider; 5. Screw rod 2; 51. Pulley 1; 52. Transmission belt 1; 53. Motor 2; 54. Cylinder 2; 55. Mounting frame 1; 56. Active roller 2; 57. Cylinder 3; 58. Mounting frame 2; 59. Active roller 3. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a hot steel pipe straightening machine.

[0031] Reference Figure 1 and Figure 2 A hot steel pipe straightening machine includes a base frame 1, a heating frame 11 is fixed on the top surface of the base frame 1, and a plurality of carbon fiber heating tubes 12 are arranged in the heating frame 11. A plurality of mounting plates 13 are fixed on both sides of the top surface of the heating frame 11, and a movable roller 14 for supporting the steel pipe is rotatably installed between two opposite mounting plates 13 on the heating frame 11.

[0032] Reference Figure 1 and Figure 2 The top surface of the base frame 1 is fixed with a door frame 2, and a screw rod 21 is rotatably installed between the opposite inner side surfaces of the door frame 2. The outer peripheral surface of the screw rod 21 is sleeved with a moving block 22, and the moving block 22 is threadedly connected with the screw rod 21. A motor 23 is fixed to the side of the door frame 2, and the output shaft of the motor 23 is fixedly connected with one end of the screw rod 21. A cylinder 24 is fixed to the bottom surface of the moving block 22, and a straightening roller 25 is rotatably installed at the bottom end of the piston rod of the cylinder 24. Two limit rods 26 are fixed between the opposite inner side surfaces of the door frame 2, and the two limit rods 26 are respectively located on both sides of the screw rod 21. The two limit rods 26 pass through the moving block 22, and the moving block 22 is slidably connected with the limit rod 26 along the axial direction of the limit rod 26.

[0033] Reference Figure 1 and Figure 2Two parallel side plates 3 are fixed to both ends of the top surface of the base frame 1. The two side plates 3 are located on one side of the heating frame 11. Two rotating shafts 31 are rotatably mounted between the two side plates 3. The two rotating shafts 31 are sleeved and fixed with rollers 32 for turning the steel pipe. One end of the two rotating shafts 31 passes through the side of one of the side plates 3 away from the heating frame 11. One end of the two rotating shafts 31 is sleeved and fixed with a pulley 2 33. The two pulleys 2 33 are wound with a transmission belt 2 34. A fixing plate 38 is fixed to one side of the top surface of the base frame 1. A motor 35 is fixed to the side of the fixing plate 38. The output shaft of the motor 35 and one of the rotating shafts 31 are both provided with a pulley 36. The two pulleys 36 are wound with a transmission belt 37.

[0034] Reference Figure 1 , Figure 2 and Figure 3 , feeding mechanisms 4 are arranged on both sides of the base frame 1. The feeding mechanism 4 on the left side of the base frame 1 is used to transport the steel pipe to be straightened to the movable roller 14, and the feeding mechanism 4 on the right side of the base frame 1 is used to remove the straightened steel pipe from the movable roller 14. The feeding mechanism 4 includes a support frame 41 fixed to one side of the base frame 1, and moving rods 42 are slidably arranged on both sides of the top surface of the support frame 41. A vertical rod 43 is fixed to the end of the moving rod 42 close to the base frame 1. A support rod 44 arranged obliquely is integrally formed on the side of the vertical rod 43 close to the base frame 1, and the end of the support rod 44 away from the vertical rod 43 is inclined upward. Slide grooves 45 are arranged on both sides of the top surface of the support frame 41, and a slider 46 is fixed to the bottom surface of the moving rod 42. The slider 46 is slidably arranged in the slide groove 45. A screw rod 2 5 is rotatably installed between the opposite inner sides of the slide groove 45. The screw rod 2 5 passes through the slider 46, and the screw rod 2 5 is threadedly connected to the slider 46. A pulley 51 is fixedly mounted on each of the two screw rods 5 , and a transmission belt 52 is wound around the two pulleys 51 . A motor 53 is fixed to the side of the support frame 41 away from the base frame 1 , and the output shaft of the motor 53 is fixedly connected to one end of one of the screw rods 5 .

[0035] Reference Figure 1 and Figure 2 , two cylinders 3 57 are arranged on one side of the support frame 41 close to the bottom frame 1, and the cylinders 3 57 are fixed to the ground. A mounting frame 2 58 is fixed to the top of the piston rod of the cylinder 3 57, and a movable roller 3 59 is rotatably mounted between the opposite inner sides of the mounting frame 2 58. Cylinders 2 54 are fixed to both sides of the top surface of the bottom frame 1, and the cylinders 2 54 are located between the side plate 3 and the heating frame 11. A mounting frame 1 55 is fixed to the top of the piston rod of the cylinder 2 54, and a movable roller 2 56 is rotatably mounted between the opposite inner sides of the mounting frame 1 55.

[0036] The implementation principle of a hot steel pipe straightening machine in an embodiment of the present application is: when the steel pipe needs to be straightened, the staff places the steel pipe on two movable rollers three 59, and then starts two cylinders. The two cylinders three 57 simultaneously drive the two mounting frames two 58 to move upward, so that the mounting frames two 58 drive the movable rollers three 59 to move upward, and the movable rollers three 59 drive the steel pipe to move upward to above the support rod 44. Then start the motor 2 53, the output shaft of the motor 2 53 drives the screw 2 5 to rotate, so that the screw 2 5 drives the pulley 1 51 to rotate, the pulley 1 51 drives the transmission belt 1 52 to rotate, and the transmission belt 1 52 drives the other pulley 1 51 to rotate, so that the two screws 2 5 rotate at the same time, the screw 2 5 drives the slider 46 to move in the direction close to the base frame 1, and the slider 46 drives the moving rod 42 to move in the direction close to the base frame 1, so that the moving rod 42 removes the steel pipe from the movable roller 3 59 during the movement of the supporting rod 44 and the vertical rod 43, and drives the steel pipe to move above the heating frame 11, and then starts the cylinder 2 54, the piston rod of the cylinder 2 54 drives the mounting frame 1 55 to move upward, and the mounting frame 1 55 drives the movable roller 2 56 to move upward The movable roller 256 pushes the steel pipe upward to the support frame, so that the steel pipe is separated from the support rod 44. Then, the motor 253 is started to make the screw 25 rotate in the opposite direction to move the movable rod 42 away from the base frame 1. Then, the cylinder 254 is started, and the piston rod of the cylinder 254 drives the mounting frame 155 to move downward, and the mounting frame 155 drives the steel pipe to move downward so that the steel pipe is placed on the movable roller 14. Then, the motor 23 is started to make the output shaft of the motor 23 drive the moving block 22 to move, and the moving block 22 drives the cylinder 24 to move, so that the cylinder 24 drives the correction roller to move along the axial direction of the screw 21 to the steel pipe correction position. Then, the cylinder 24 is started to make the piston rod of the cylinder 24 drive the correction roller to move downward to straighten the steel pipe. When the steel pipe is straightened, start cylinder 2 54 again. Cylinder 2 54 drives movable roller 2 56 to move upward, so that movable roller 2 56 lifts up the straightened steel pipe, and then the straightened steel pipe is removed through the feeding mechanism 4 on the other side of the base frame 1, thereby reducing the possibility of workers being burned by the carbon fiber heating tube 12 when placing and removing the steel pipe.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hot steel pipe straightening machine, comprising a base frame (1), a heating frame (11) being arranged on the base frame (1), and a carbon fiber heating tube (12) being arranged in the heating frame (11); characterized in that: A plurality of mounting plates (13) are provided on both sides of the top surface of the heating frame (11); a movable roller (14) for supporting the steel pipe is rotatably installed between two mounting plates (13) opposite to each other on both sides of the top surface of the heating frame (11); a door frame (2) is provided on the top surface of the base frame (1); a cylinder (24) is provided on the door frame (2); a straightening roller (25) is provided at the bottom end of the piston rod of the cylinder (24); a driving mechanism for driving the cylinder (24) to move along the length direction of the door frame (2) is provided on the door frame (2); a feeding mechanism (4) is provided on both sides of the base frame (1); the feeding mechanism (4) on the left side of the base frame (1) is used to transport the steel pipe to be straightened to the movable roller (14); and the feeding mechanism (4) on the right side of the base frame (1) is used to remove the steel pipe straightened on the movable roller (14).

2. A hot steel pipe straightening machine according to claim 1, characterized in that: The driving mechanism comprises a screw rod (21) rotatably mounted between opposite inner side surfaces of the door frame (2); a moving block (22) is sleeved on the screw rod (21); the moving block (22) is threadedly connected to the screw rod (21); the cylinder (24) is fixed to the bottom surface of the moving block (22); a motor (23) is arranged on the side of the door frame (2); the output shaft of the motor (23) is fixedly connected to one end of the screw rod (21); and a limiting member is arranged on the door frame (2) for limiting the moving block (22) from rotating following the screw rod (21).

3. A hot steel pipe straightening machine according to claim 2, characterized in that: The limiting member comprises a limiting rod (26) fixed between opposite inner side surfaces of the door frame (2), the limiting rod (26) passing through the moving block (22), and the moving block (22) being slidably connected to the limiting rod (26) along the axial direction of the limiting rod (26).

4. A hot steel pipe straightening machine according to claim 1, characterized in that: The feeding mechanism (4) comprises a support frame (41) arranged on one side of the base frame (1), and moving rods (42) are slidably arranged on both sides of the top surface of the support frame (41), and a vertical rod (43) is fixed to one end of the moving rod (42) close to the base frame (1), and an inclined support rod (44) is fixed to the side of the vertical rod (43) close to the base frame (1), and the end of the support rod (44) away from the vertical rod (43) is inclined upward, and a driving component for driving the moving rod (42) to move along the width direction of the support frame (41) is arranged on the support frame (41), and a cylinder 2 (54) is fixed on both ends of the top surface of the base frame (1), and a mounting frame 1 (55) is fixed to the top end of the piston rod of the cylinder 2 (54), and a movable roller 2 (56) is rotatably installed between the opposite inner sides of the mounting frame 1 (55).

5. A hot steel pipe straightening machine according to claim 4, characterized in that: Slide grooves (45) are provided on both sides of the top surface of the support frame (41), and a slider (46) is fixed on the bottom surface of the moving rod (42). The slider (46) is slidably arranged in the slide groove (45). The driving component includes a screw rod (5) rotatably installed between the opposite inner sides of the slide groove (45), the screw rod (5) passes through the slider (46), and the screw rod (5) is threadedly connected to the slider (46). The support frame (41) is provided with a synchronization member for simultaneously driving the two screw rods (5) to rotate simultaneously.

6. A hot steel pipe straightening machine according to claim 5, characterized in that: The synchronous member comprises a pulley 1 (51) arranged on the two screw rods 2 (5), a transmission belt 1 (52) is wound around the two pulleys 1 (51), a motor 2 (53) is arranged on the side of the support frame (41) away from the base frame (1), and an output shaft of the motor 2 (53) is fixedly connected to one end of one of the screw rods 2 (5).

7. A hot steel pipe straightening machine according to claim 6, characterized in that: Two cylinder threes (57) are arranged on one side of the support frame (41) close to the base frame (1); a mounting frame two (58) is fixed to the top end of the piston rod of the cylinder three (57); and a movable roller three (59) is rotatably mounted between the opposite inner sides of the mounting frame two (58).

8. A hot steel pipe straightening machine according to claim 7, characterized in that: Two side plates (3) arranged parallel to each other are fixed at both ends of the top surface of the base frame (1); two rotating shafts (31) are rotatably mounted between the two side plates (3); rollers (32) for turning the steel pipes are arranged on the two rotating shafts (31); and a power mechanism for driving the two rotating shafts (31) to rotate simultaneously is arranged on the side plates (3).

9. A hot steel pipe straightening machine according to claim 8, characterized in that: The power mechanism comprises a second pulley (33) arranged on the two rotating shafts (31), a second transmission belt (34) is wound around the two second pulleys (33), a fixing plate (38) is arranged on the top surface of the base frame (1), a third motor (35) is arranged on the side of the fixing plate (38), a third pulley (36) is arranged on the output shaft of the third motor (35) and one of the rotating shafts (31), and a third transmission belt (37) is wound around the two third pulleys (36).

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