Turnover device for H-shaped steel welding

Abstract

The invention discloses an overturning device for H-shaped steel welding, and relates to the technical field of H-shaped steel production equipment.The overturning device comprises a base, rotating frames, a conveying frame and a limiting assembly, an opening is formed in one side of the base, the rotating frames are arranged at the two ends of the inner side of the base, first hydraulic cylinders which are symmetrically distributed are fixedly arranged on the outer sides of the rotating frames, and fixing frames are fixedly arranged at the output ends of the first hydraulic cylinders; a motor is fixedly arranged on the outer side of the base, the output end of the motor is fixed to the rotating frame, a third hydraulic cylinder is fixedly arranged at the bottom of the inner side of the base, and the output end of the third hydraulic cylinder is fixed to the bottom of the conveying frame. H-shaped steel with one welded face is conveyed to the center of the base, the second hydraulic cylinder drives the clamping block to vertically clamp a wing plate of the H-shaped steel, the outer side of the H-shaped steel is limited and fixed through the limiting assembly, the conveying frame is moved downwards, and then the motor can drive the rotating frame to rotate so as to drive the H-shaped steel to rotate by 180 degrees.

Description

Technical Field

[0001] The invention relates to the technical field of H-beam production equipment, in particular to a turning device for H-beam welding. Background Art

[0002] With the expansion of the application of H-shaped steel in various types of tall buildings, various types of super-high and super-long H-shaped steel structures in large buildings are increasingly used. In the production process of H-shaped steel structures in large buildings, in order to ensure the balance of heat during the welding process of the steel and avoid welding stress bending deformation during the welding of H-shaped steel, the welding process usually requires that each weld between the flange and the web on one side must be immediately turned over, and then the weld between the flange and the web on the other side is welded. Multiple turns and welding are required to ensure the external dimensions of the H-shaped steel components and avoid structural deformation.

[0003] The existing large-scale welded H-beams are usually flipped by two factory cranes to lift the H-beams. During the flipping process, when the H-beam stands upright on the welding bracket and starts to flip to the other side, if the crane operation is not properly controlled, the H-beam will quickly tip over to the other side and slide in the opposite direction under the action of gravity, which may cause the welding bracket to be damaged or the H-beam components to fall and deform. In severe cases, the crane steel cable may be broken by the diagonal pull under the action of sudden external force, the crane steel beam may be bent and deformed, or personal safety accidents may occur. There are very serious safety hazards. Therefore, we propose a flipping device for H-beam welding. Summary of the invention

[0004] The object of the present invention is to provide a turning device for H-beam welding, which has the advantage that the H-beam is fixedly supported by a turning frame on a base and a limit assembly in the turning frame, and the H-beam is rotated 180° by rotating the turning frame, which can effectively prevent slippage and the like when the H-beam is turned over.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a turning device for H-beam welding, comprising a base, a rotating frame, a conveying frame and a limiting assembly, wherein an opening for the H-beam to enter is provided on one side of the base, two rotating frames are provided, and the two rotating frames are respectively rotatably arranged at the two ends of the inner side of the base, a symmetrically distributed hydraulic cylinder 1 is fixedly arranged on the outer side of the rotating frame, a fixed frame is fixedly arranged on the output end of the hydraulic cylinder 1, a symmetrically distributed hydraulic cylinder 2 is fixedly arranged on the outer side of the fixed frame, a clamping block is fixedly arranged on the output end of the hydraulic cylinder 2, and the clamping block is slidably connected to the inside of the fixed frame, a motor is fixedly arranged on the side of the outer side of the base away from the opening, and the output end of the motor is fixed to the rotation center of the rotating frame, the conveying frame is arranged in the base, and evenly distributed hydraulic cylinders 3 are fixedly arranged on the bottom of the inner side of the base, and the output end of the hydraulic cylinder 3 is fixed to the bottom of the conveying frame, and the limiting assembly is arranged between the two rotating frames, and is used for fixing the H-beam in the limiting base.

[0006] Preferably, the limiting component includes a mounting frame, two mounting frames are provided, the two mounting frames are symmetrically arranged on the inner side of the base, both ends of the mounting frames are respectively fixed to the fixing frames symmetrically arranged inside the base, four evenly distributed hydraulic cylinders are fixed on the outer side of the mounting frame, a back plate is provided on the inner side of the mounting frame, the outer side of the back plate is fixed to the output end of the four hydraulic cylinders, and an auxiliary component of the wing plate for limiting the H-shaped steel is provided on the inner side of the mounting frame.

[0007] Preferably, the auxiliary component includes a fixing plate, the fixing plate is provided with two symmetrically distributed groups, each group is provided with two fixing plates, which are arranged on the inner side of the mounting frame, and two ends of the fixing plate are respectively fixed to two clamping blocks symmetrically arranged in the base, an auxiliary plate is provided on the inner side of the fixing plate, and the end of the auxiliary plate is slidably connected to the clamping block, a uniformly distributed fixing cylinder 1 is fixed on the inner side of the fixing plate, a piston plate 1 is slidably provided in the fixing cylinder 1, a piston rod 1 is fixed on the side of the piston plate 1, an end of the piston rod 1 away from the piston plate 1 passes through the fixing cylinder 1 and is fixed to the auxiliary plate, a uniformly distributed fixing cylinder 2 is fixed on the outer side of the push plate, a piston plate 2 is slidably provided in the fixing cylinder 2, a piston rod 2 is fixed on the side of the piston plate 2 close to the push plate, an end of the piston rod 2 away from the piston plate 2 passes through the fixing cylinder 2 and the push plate, a pressure plate for contacting H-shaped steel is provided on the inner side of the push plate, and an end of the piston rod 2 away from the piston plate 2 is fixed to the pressure plate, a connecting pipe is fixed between the fixing cylinder 2 and the fixing cylinder 1, and the connecting pipe is connected with the interior of the fixing cylinder 1 and the fixing cylinder 2.

[0008] Preferably, a compression spring 1 is fixedly provided on the side where piston plate 1 is connected to piston rod 1, and compression spring 1 is fixed to the inside of fixed cylinder 1. A compression spring 2 is fixedly provided on the side of piston plate 2 away from piston rod 2, and compression spring 2 is fixed to the inside of fixed cylinder 2.

[0009] Preferably, a groove for embedding the wing plate of the H-shaped steel is provided at the bottom of the auxiliary plate.

[0010] Preferably, the notch is V-shaped.

[0011] Preferably, the connecting pipe is a plastic hose.

[0012] Preferably, guide plates are symmetrically arranged in the opening.

[0013] Preferably, symmetrically distributed hydraulic cylinders five are fixedly provided on the outer side of the opening, and the hydraulic cylinders five are fixed to the guide plate.

[0014] Preferably, an inclined surface is provided on the inner side of the guide plate, and a narrow opening between the two inclined surfaces is close to the opening.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention delivers the H-shaped steel with one side welded into the opening, uses the conveying frame to deliver the H-shaped steel to the center of the base, drives the fixing frames on both sides of the H-shaped steel to move toward the H-shaped steel through the first hydraulic cylinder, and then drives the clamping blocks to clamp the wing plates of the H-shaped steel up and down through the second hydraulic cylinder, and finally limits and fixes the outer side of the H-shaped steel through the limiting assembly, moves the conveying frame downward, and then drives the motor to drive the rotating frame to rotate as a whole to drive the H-shaped steel to rotate 180 degrees.

[0016] 2. After the H-beam is clamped up and down by the clamping blocks, the outer side of the wing plate of the H-beam is clamped by the pressing plate, so that the H-beam is stable when the rotating frame drives the H-beam to rotate without deviation.

[0017] 3. The present invention utilizes a push plate to press the pressure plate against the outside of the H-shaped steel. When the push plate continuously moves toward the H-shaped steel, the pressure plate drives the piston plate 2 to slide in the fixed cylinder 2 through the piston rod 2, pressurizing the air in the fixed cylinder 2. The pressurized air enters the fixed cylinder 1 through the connecting pipe to squeeze the piston plate 1, thereby pressing the auxiliary plate toward the H-shaped steel through the piston rod 1, and finally the wing plate of the H-shaped steel is embedded in the groove of the auxiliary plate. The wing plate of the H-shaped steel is limited and fixed by the groove, thereby ensuring that the H-shaped steel is straight during its rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position of the conveying frame of the present invention; Figure 3 It is a schematic diagram of the structure between two rotating frames of the present invention; Figure 4 This is a schematic diagram of the outer structure of the rotating frame of the present invention; Figure 5 It is a side view schematic diagram of the device when the H-shaped steel of the present invention is placed in the rotating frame; Figure 6 It is a schematic diagram of the structure of the limit assembly of the present invention; Figure 7 It is a partial distribution diagram of the hydraulic cylinder 4 and the fixed cylinder 2 of the present invention; Figure 8 It is a partial cross-sectional schematic diagram of the auxiliary component of the present invention.

[0019] In the figure: 1. base; 2. opening; 3. rotating frame; 4. hydraulic cylinder 1; 5. fixed frame; 6. hydraulic cylinder 2; 7. clamping block; 8. motor; 9. conveying frame; 10. hydraulic cylinder 3; 11. limit assembly; 12. mounting frame; 13. hydraulic cylinder 4; 14. stop plate; 15. auxiliary assembly; 16. fixed plate; 17. auxiliary plate; 18. fixed cylinder 1; 19. piston plate 1; 20. piston rod 1; 21. fixed cylinder 2; 22. piston plate 2; 23. piston rod 2; 24. pressure plate; 25. connecting pipe; 26. compression spring 1; 27. compression spring 2; 28. notch; 29. ​​guide plate; 30. hydraulic cylinder 5; 31. inclined surface. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 - Figure 8 , a turning device for H-beam welding shown in the figure comprises a base 1, a rotating frame 3, a conveying frame 9 and a limiting assembly 11. An opening 2 for the H-beam to enter is provided on one side of the base 1. Two rotating frames 3 are provided. The two rotating frames 3 are respectively rotatably arranged at the two ends of the inner side of the base 1. A symmetrically distributed hydraulic cylinder 1 4 is fixedly arranged on the outer side of the rotating frame 3. A fixed frame 5 is fixedly arranged on the output end of the hydraulic cylinder 1 4. A symmetrically distributed hydraulic cylinder 2 6 is fixedly arranged on the outer side of the fixed frame 5. A clamping block 7 is fixedly arranged on the output end of the hydraulic cylinder 2 6. The clamping block 7 is slidably connected to the inside of the fixed frame 5. A motor 8 is fixedly arranged on the side of the outer side of the base 1 away from the opening 2. The output end of the motor 8 is fixed to the rotation center of the rotating frame 3. The conveying frame 9 is arranged in the base 1. A uniformly distributed hydraulic cylinder 3 10 is fixedly arranged on the bottom of the inner side of the base 1. The output end of the hydraulic cylinder 3 10 is fixed to the bottom of the conveying frame 9. The limiting assembly 11 is arranged between the two rotating frames 3, and is used for fixing and limiting the H-beam in the base 1. It should be noted that, in the present scheme, the H-beam with one side welded is transported into the opening 2, and the H-beam is transported to the center of the base 1 by the transport frame 9, and the fixed frames 5 on both sides of the H-beam are driven toward the H-beam by the hydraulic cylinder 1 4, and then the clamping block 7 is driven by the hydraulic cylinder 2 6 to clamp the wing plate of the H-beam up and down, and finally the outer side of the H-beam is limited and fixed by the limit assembly 11, and the transport frame 9 is moved down, and then the motor 8 can drive the rotating frame 3 to rotate as a whole to drive the H-beam to rotate 180°.

[0022] Specifically, refer to Figure 1-Figure 8The limiting component 11 includes a mounting frame 12, two mounting frames 12 are provided, and the two mounting frames 12 are symmetrically arranged on the inner side of the base 1. The two ends of the mounting frame 12 are respectively fixed to the fixing frames 5 symmetrically arranged inside the base 1. The outer side of the mounting frame 12 is fixed with evenly distributed hydraulic cylinders 13. The inner side of the mounting frame 12 is provided with a stop plate 14, and the outer side of the stop plate 14 is fixed to the output end of the hydraulic cylinder 13. The inner side of the mounting frame 12 is provided with an auxiliary component 15 for limiting the wing plate of the H-shaped steel; The principle of the limit assembly 11 for limiting the clamping of the H-beam is as follows: first, the H-beam with one side welded is sent into the rotating frame 3 through the opening 2, and the H-beam is transported to the center of the rotating frame 3 by the conveying frame 9, and then the fixed frame 5 is pushed toward the H-beam by the hydraulic cylinder 1 4 until the clamping block 7 in the fixed frame 5 is above the wing plate of the H-beam, and then the clamping blocks 7 on the upper and lower sides of the H-beam are driven by the hydraulic cylinder 2 6 to move toward the H-beam, and the clamping blocks 7 are used to clamp the upper and lower sides of the wing plate of the H-beam, and then the clamping blocks 7 are used to clamp the upper and lower sides of the wing plate of the H-beam. The hydraulic cylinder four 13 drives the abutment plate 14 to move toward the H-shaped steel, and the force of the abutment plate 14 is used to clamp the outer side of the wing plate of the H-shaped steel. At this time, the upper and lower sides and the left and right sides of the H-shaped steel are all limited and fixed, and then the hydraulic cylinder three 10 drives the conveying frame 9 to move down to a position that does not affect the rotation of the rotating frame 3. Finally, the motor 8 drives the rotating frame 3 to rotate to drive the H-shaped steel in the rotating frame 3 to rotate 180°. The whole process is smooth and stable, and there will be no problem of one end of the H-shaped steel tilting and then slipping.

[0023] At the same time, reference Figure 3 , Figure 6 , Figure 7 and Figure 8 The auxiliary component 15 includes a fixed plate 16, and the fixed plate 16 is provided with two groups symmetrically distributed, each group is provided with two, the fixed plate 16 is arranged on the inner side of the mounting frame 12, and the two ends of the fixed plate 16 are respectively fixed to the two clamping blocks 7 symmetrically arranged in the base 1, and an auxiliary plate 17 is provided on the inner side of the fixed plate 16, and the end of the auxiliary plate 17 is slidably connected with the clamping block 7, and a uniformly distributed fixed cylinder 18 is fixed on the inner side of the fixed plate 16, and a piston plate 19 is slidably provided in the fixed cylinder 18, and a piston rod 20 is fixed on the side of the piston plate 19, and the end of the piston rod 20 away from the piston plate 19 passes through the fixed cylinder 18 and is connected to the auxiliary The plate 17 is fixed, and the outer side of the plate 14 is fixed with evenly distributed fixed cylinders 21, and a piston plate 22 is slidably arranged in the fixed cylinder 21. A piston rod 23 is fixed on the side of the piston plate 22 close to the plate 14. The end of the piston rod 23 away from the piston plate 22 passes through the fixed cylinder 21 and the plate 14. A pressure plate 24 for contacting the H-shaped steel is provided on the inner side of the plate 14. The end of the piston rod 23 away from the piston plate 22 is fixed to the pressure plate 24. A connecting pipe 25 is fixed between the fixed cylinder 21 and the fixed cylinder 18, and the connecting pipe 25 is connected with the interior of the fixed cylinder 18 and the fixed cylinder 21; Among them, a compression spring 26 is fixedly provided on one side where the piston plate 19 is connected to the piston rod 20, and the compression spring 26 is fixed to the inside of the fixed cylinder 18. A compression spring 27 is fixedly provided on the side of the piston plate 22 away from the piston rod 23, and the compression spring 27 is fixed to the inside of the fixed cylinder 21. The existence of the compression spring 26 can ensure that the auxiliary plate 17 itself will not go over the bottom when it is not squeezed by the piston rod 20, thereby ensuring that the auxiliary plate 17 will not affect the H-shaped steel entering the rotating frame 3 in the initial state. The existence of the compression spring 27 can ensure that the pressure plate 24 can stably press against the outer side of the H-shaped steel during the movement of the push plate 14 toward the H-shaped steel. It is worth noting that Figure 8 As shown, the bottom of the auxiliary plate 17 is provided with a notch 28 for embedding the wing plate of the H-shaped steel, and the notch 28 is V-shaped; The principle of the auxiliary component 15 clamping and protecting the outer side of the wing plate of the H-beam is as follows: when the push plate 14 is driven by the hydraulic cylinder 4 13 to move toward the H-beam in the rotating frame 3, the pressure plate 24 first presses against the outer side of the wing plate of the H-beam. As the push plate 14 continues to approach the H-beam, the pressure plate 24 is subjected to the reaction force of the H-beam, and the piston rod 23 is used to push the piston plate 22 to slide in the fixed cylinder 21, thereby squeezing the air in the fixed cylinder 21, and pressing the air in the fixed cylinder 21 into the fixed cylinder 18 through the connecting pipe 25. The air in the fixed cylinder 18 The body is compressed and squeezes the piston plate 19. The piston plate 19 drives the auxiliary plate 17 to move toward the H-shaped steel through the piston rod 20 under the push of air pressure, until the upper and lower sides of the wing plate of the H-shaped steel are embedded in the groove 28 at the bottom of the auxiliary plate 17, and the upper and lower sides of the wing plate are clamped and fixed by the V-shaped groove 28 to ensure the straightness of the wing plate, thereby ensuring that the edge of the wing plate will not be damaged by collision during the rotation of the H-shaped steel with the rotating frame 3. At the same time, the auxiliary plate 17 can also be used to support the middle part of the wing plate to ensure the straightness of the H-shaped steel when it is turned over.

[0024] In the present technical solution, when the hydraulic cylinder 4 is controlled by an external CNC operating table to drive the fixing frame 5 to adjust its position, the fixing frame 5 is finally adjusted until the center of the notch 28 of the auxiliary plate 17 is directly above the wing plate of the H-shaped steel, ensuring that when the auxiliary plate 17 passes through the notch 28 to limit the wing plate of the H-shaped steel, both sides of the edge of the wing plate are evenly stressed in the notch 28.

[0025] In the present technical solution, the connecting pipe 25 is a plastic hose that can adapt to the movement of the abutment plate 14 .

[0026] In this technical solution, if Figure 2As shown, a guide plate 29 is symmetrically provided in the opening 2, and a symmetrically distributed hydraulic cylinder five 30 is fixedly provided on the outside of the opening 2. The hydraulic cylinder five 30 is fixed to the guide plate 29. An inclined surface 31 is provided on the inner side of the guide plate 29, and the narrow opening between the two inclined surfaces 31 is close to the opening 2. The width of the narrow opening between the two inclined surfaces 31 is adjusted according to the width of the H-beam, and the width of the narrow opening of the two inclined surfaces 31 is adjusted to the width of the H-beam. When the H-beam is fed into the opening 2, under the action of the two symmetrically distributed guide plates 29, the H-beam entering the rotating frame 3 can be located at the center of the rotating frame 3, so that the subsequent limiting assembly 11 can clamp and fix the H-beam.

[0027] In this scheme, the two symmetrically distributed guide plates 29 are driven to approach each other by the hydraulic cylinder 5 30 until the distance between the narrow openings of the inclined surfaces 31 of the two guide plates 29 is equal to the width of the H-shaped steel. The H-shaped steel with one side welded is guided to the center of the opening 2 by the guide plate 29, so that the H-shaped steel entering the opening 2 can be in the middle position of the rotating frame 3. The H-shaped steel entering the rotating frame 3 is supported by the conveying frame 9, and the web of the H-shaped steel is on the rolling roller of the conveying frame 9 until the H-shaped steel is completely in the center of the rotating frame 3. Then, the fixed frame 5 is pushed toward the H-shaped steel by the hydraulic cylinder 1 4 until the clamping block 7 in the fixed frame 5 is above the wing plate of the H-shaped steel. Then, the clamping blocks 7 on the upper and lower sides of the H-shaped steel are driven toward the H-shaped steel by the hydraulic cylinder 2 6, and the upper and lower sides of the wing plate of the H-shaped steel are clamped by the clamping blocks 7. At this time, the hydraulic cylinder 4 13 drives the abutment plate 14 toward the H The H-shaped steel moves, and the pressure plate 24 on the outside of the plate 14 first contacts the wing plate of the H-shaped steel. As the hydraulic cylinder continues to press in, the pressure plate 24 drives the piston plate 22 to slide in the fixed cylinder 21 through the piston rod 23, squeezing the compression spring 27 to clamp and limit the left and right sides of the wing plate of the H-shaped steel. At this time, the upper and lower parts and the left and right parts of the H-shaped steel are clamped and fixed, and the H-shaped steel is limited and fixed in the rotating frame 3. The conveying frame 9 is driven downward by the hydraulic cylinder 3 10 to move the conveying frame 9 down to a position that does not affect the rotation of the rotating frame 3. The rotating frame 3 is then driven to rotate by the motor 8, which can drive the H-shaped steel to rotate 180°, and the side of the H-shaped steel that has not been welded is rotated to the top. The conveying frame 9 is driven upward by the hydraulic cylinder 3 10, and the conveying frame 9 is used to support the web of the H-shaped steel again. Then, the flipped H-shaped steel is released, and the conveying frame 9 is used to send the H-shaped steel out of the opening 2 for welding again. When the hydraulic cylinder 4 13 drives the abutment plate 14 to gradually approach the H-shaped steel, the pressure plate 24 continuously slides in the fixed cylinder 21 with the piston plate 22 through the piston rod 23, and the piston plate 22 squeezes the air in the fixed cylinder 21, and presses the air in the fixed cylinder 21 into the fixed cylinder 18 through the connecting pipe 25. The gas in the fixed cylinder 18 is compressed and squeezes the piston plate 19. The piston plate 19 drives the auxiliary plate 17 toward the H-shaped steel through the piston rod 1 20 under the push of air pressure, until the upper and lower sides of the wing plate of the H-shaped steel are embedded in the groove 28 at the bottom of the auxiliary plate 17, and the upper and lower sides of the wing plate are clamped and fixed by the V-shaped groove 28 to ensure that the edge of the wing plate will not be damaged by collision when the H-shaped steel rotates with the rotating frame 3. At the same time, the auxiliary plate 17 can also be used to support the middle part of the wing plate to ensure the straightness of the H-shaped steel when it is turned over.

[0028] Embodiment 2: This embodiment further describes the embodiment 1, and the difference lies in the optimization of the notch 28 of the auxiliary plate 17; Specifically, a rubber pad can be provided on the inner surface of the notch 28 of the auxiliary plate 17, and the rubber pad is in direct contact with the H-shaped steel, so that the rubber pad can be used to wrap the sharp part of the edge of the H-shaped steel wing plate to prevent possible damage to the wing plate edge.

[0029] Embodiment 3: This embodiment further illustrates other embodiments, and the difference lies in the optimization of the motor 8; Specifically, the motor 8 can be a servo motor 8. The controller of the servo motor 8 has flexible programming capabilities and supports multiple motion control modes, such as position control, speed control, and force control, etc., which is convenient for users to customize according to actual needs. At the same time, the servo motor 8 can accurately control its position, speed, and acceleration to achieve high-precision motion control. It can adjust the rotor rotation angle in real time to ensure motion accuracy, thereby accurately controlling the rotation angle of the rotating frame 3 to 180° to ensure the level of the H-shaped steel after flipping.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning device for H-beam welding, characterized in that: include: A base (1), wherein one side of the base (1) is provided with an opening (2) for the H-shaped steel to enter; A rotating frame (3), wherein two rotating frames (3) are provided, and the two rotating frames (3) are rotatably arranged at two ends of the inner side of the base (1), and the outer side of the rotating frame (3) is fixedly provided with a symmetrically distributed hydraulic cylinder 1 (4), and the output end of the hydraulic cylinder 1 (4) is fixedly provided with a fixed frame (5), and the outer side of the fixed frame (5) is fixedly provided with a symmetrically distributed hydraulic cylinder 2 (6), and the output end of the hydraulic cylinder 2 (6) is fixedly provided with a clamping block (7), and the clamping block (7) is slidably connected to the inside of the fixed frame (5); a motor (8) is fixedly provided on the outer side of the base (1) away from the opening (2), and the output end of the motor (8) is fixed to the rotation center of the rotating frame (3); A conveying frame (9), the conveying frame (9) being arranged in the base (1), and evenly distributed hydraulic cylinders (10) are fixedly arranged on the inner bottom of the base (1), and the output end of the hydraulic cylinders (10) is fixed to the bottom of the conveying frame (9); A limiting assembly (11), the limiting assembly (11) is arranged between the two rotating frames (3) and is used to fix and limit the H-shaped steel in the base (1).

2. The H-beam welding turning device according to claim 1 is characterized in that: The limiting component (11) comprises a mounting frame (12), wherein two mounting frames (12) are provided, and the two mounting frames (12) are symmetrically arranged on the inner side of the base (1), and the two ends of the mounting frame (12) are respectively fixed to the fixing frames (5) symmetrically arranged inside the base (1), and the outer side of the mounting frame (12) is fixed with evenly distributed hydraulic cylinders (13), and the inner side of the mounting frame (12) is provided with a stop plate (14), and the outer side of the stop plate (14) is fixed to the output end of the hydraulic cylinder (13), and the inner side of the mounting frame (12) is provided with an auxiliary component (15) for limiting the wing plate of the H-shaped steel.

3. The H-beam welding turning device according to claim 2 is characterized in that: The auxiliary component (15) comprises a fixing plate (16), wherein the fixing plate (16) is provided with two groups symmetrically distributed, each group having two fixing plates (16), the fixing plate (16) being provided on the inner side of the mounting frame (12), the two ends of the fixing plate (16) being respectively fixed to the two clamping blocks (7) symmetrically arranged in the base (1), the inner side of the fixing plate (16) being provided with an auxiliary plate (17), the end of the auxiliary plate (17) being slidably connected to the clamping blocks (7), the inner side of the fixing plate (16) being fixed with evenly distributed fixing cylinders (18), the fixing cylinders (18) being slidably provided with a piston plate (19), the side of the piston plate (19) being fixed with a piston rod (20), the end of the piston rod (20) away from the piston plate (19) passing through the fixing cylinder (18) and being connected to the auxiliary plate (17) is fixed, the outer side of the said stop plate (14) is fixedly provided with evenly distributed fixing cylinders (21), the inside of the said fixing cylinder (21) is slidably provided with a piston plate (22), the side of the said piston plate (22) close to the said stop plate (14) is fixedly provided with a piston rod (23), the end of the said piston rod (23) away from the said piston plate (22) passes through the said fixing cylinder (21) and the said stop plate (14), the inside of the said stop plate (14) is provided with a pressure plate (24) for contacting the H-shaped steel, the end of the said piston rod (23) away from the said piston plate (22) is fixed to the pressure plate (24), a connecting pipe (25) is fixedly provided between the said fixing cylinder (21) and the said fixing cylinder (18), and the connecting pipe (25) is connected with the inside of the said fixing cylinder (18) and the said fixing cylinder (21).

4. The H-beam welding turning device according to claim 3 is characterized in that: A compression spring 1 (26) is fixedly provided on the side where the piston plate 1 (19) is connected to the piston rod 1 (20), and the compression spring 1 (26) is fixed to the inside of the fixed cylinder 1 (18). A compression spring 2 (27) is fixedly provided on the side of the piston plate 2 (22) away from the piston rod 2 (23), and the compression spring 2 (27) is fixed to the inside of the fixed cylinder 2 (21).

5. The H-beam welding turning device according to claim 3 is characterized in that: The bottom of the auxiliary plate (17) is provided with a notch (28) for embedding the wing plate of the H-shaped steel.

6. The H-beam welding turning device according to claim 5, characterized in that: The notch (28) is V-shaped.

7. The H-beam welding turning device according to claim 3 is characterized in that: The connecting pipe (25) is a plastic hose.

8. The H-beam welding turning device according to claim 1, characterized in that: Guide plates (29) are symmetrically arranged in the opening (2).

9. The H-beam welding turning device according to claim 8, characterized in that: A symmetrically distributed hydraulic cylinder five (30) is fixedly provided on the outside of the opening (2), and the hydraulic cylinder five (30) is fixed to the guide plate (29).

10. The H-beam welding turning device according to claim 9, characterized in that: An inclined surface (31) is provided on the inner side of the guide plate (29), and a narrow opening between the two inclined surfaces (31) is close to the opening (2).

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