Building steel structure welding deformation correcting device and using method thereof

Abstract

The invention discloses a building steel structure welding deformation correcting device and a using method thereof, and relates to the technical field of steel structure machining. Comprising a base and H-shaped steel, and the base is in a C shape and is provided with an upward opening; the H-shaped steel is positioned in the base; first correcting pieces used for correcting the H-shaped steel are installed on the upper side face and the lower side face of the H-shaped steel. Second correcting pieces are installed and connected to the positions, located on the two sides of the H-shaped steel, of the inner side face of the base. The bottom end of the side face of the base is fixedly connected with a motor, and the output end of the motor is rotationally connected with a linkage piece. A fixing groove is formed in the top end of the side face, away from the motor, of the base, and a fixing piece used for fixing the linkage piece is slidably connected to the inner surface of the fixing groove. The problems that when H-shaped steel columns of different models are corrected, correction equipment of other corresponding models needs to be used for correcting the H-shaped steel columns, compatibility is not achieved, operation is troublesome, and the machining cost is increased are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure processing, and in particular to a device for correcting welding deformation of a building steel structure and a method for using the device. Background Art

[0002] H-shaped steel is an economical and efficient profile with a more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. It is named because its cross-section is the same as the English letter "H". Since all parts of the H-shaped steel are arranged at right angles, it has the advantages of strong bending resistance in all directions, simple construction, cost savings and light structural weight, and has been widely used.

[0003] During the welding process of H-beam, the wing plate is easily deformed due to the concentrated heat at the weld. In order to improve the quality of H-beam, a correction device is needed to correct the H-beam wing plate.

[0004] The existing H-beam correction device can only correct H-beams of fixed specifications. When correcting H-beam columns of different models, other corresponding models of correction equipment are required to correct them. This is not compatible, is cumbersome to operate, and increases processing costs.

[0005] Therefore, there is a need for a building steel structure welding deformation correction device and a method of using the same as mentioned in the present invention. Summary of the invention

[0006] The purpose of the present invention is to correct H-shaped steel columns of different models by using correction equipment of other corresponding models, which is incompatible, cumbersome to operate and increases processing costs.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A welding deformation correction device for a building steel structure comprises a base and an H-shaped steel, wherein the base is in a "C" shape and is opened upward; the H-shaped steel is located inside the base;

[0009] The upper and lower sides of the H-shaped steel are provided with first correcting members for correcting the H-shaped steel;

[0010] The inner side surface of the base is located on both sides of the H-shaped steel and is connected with a second correcting member;

[0011] A motor is fixedly connected to the bottom end of the side surface of the base, and a linkage is rotatably connected to the output end of the motor;

[0012] A fixing groove is provided at the top of a side surface of the base away from the motor, and a fixing piece for fixing the linkage piece is slidably connected to the inner surface of the fixing groove.

[0013] In a further technical solution, the first correcting member includes a correcting roller 1 and a correcting roller 2, and the correcting roller 1 and the correcting roller 2 are distributed on the upper and lower sides of the H-shaped steel;

[0014] The top inner side of the base is fixedly connected to a mounting plate, the center position of the upper surface of the mounting plate is fixedly connected to a hydraulic cylinder 1, the cylinder body of the hydraulic cylinder 1 is connected to the mounting plate, and the output end of the hydraulic cylinder 1 passes downward through the mounting plate and is fixedly connected to a mounting frame 1;

[0015] The two sides of the base are provided with slide grooves, which are arranged vertically; the two sides of the mounting frame slide in the slide grooves, the two ends of the mounting frame are bent downward and the inner side surface is rotatably connected to a correction roller through an installation rotating shaft.

[0016] In a further technical solution, the motor output shaft is coaxially fixedly connected to the second straightening roller, the second straightening roller is located inside the base, and the first straightening roller and the second straightening roller are suitable for movably abutting against the upper and lower wing plates of the H-shaped steel respectively.

[0017] In a further technical solution, the second correcting member includes a hydraulic cylinder 2, the cylinder body of which is fixed on the inner side of the base and is symmetrically arranged in two groups; the output end of the hydraulic cylinder 2 is fixedly connected to a mounting frame 2, the mounting frame 2 is in a "C" shape, and the inner side surface is rotatably connected to a correcting roller 3 via an installed connecting shaft; the correcting roller 3 is vertically arranged.

[0018] In a further technical solution, transmission rollers are connected to both sides of the second correction roller, and both ends of the transmission rollers extend into the base and are installed with connecting bearings, and the transmission rollers rotate relatively inside the base;

[0019] The conveying roller and the second correction roller have the same horizontal height.

[0020] In a further technical solution, the linkage member includes a rotating plate, and the end of the second correction roller facing away from the motor extends to the outer side of the base and is coaxially fixedly connected with a connecting rod;

[0021] A protection box is fixedly connected to the side of the rotating plate facing away from the base, the connecting rod extends to the inside of the protection box and is fixedly connected to a sprocket wheel 1, the outer surface of the sprocket wheel 1 is meshedly connected to a chain, the inner surface of the chain is meshedly connected to a sprocket wheel 2, and the sprocket wheel 2 is located at the upper end of the sprocket wheel 1;

[0022] The correction roller 1 is installed with a rotating shaft and extends outside the base, and is fixedly connected with a gear 4, the outer surface of the gear 4 is meshedly connected with the gear 1, the outer surface of the gear 1 is meshedly connected with the gear 2, and the outer surface of the gear 2 is meshedly connected with the gear 3;

[0023] The gear one, gear two and gear three are rotatably connected to the rotating plate by installing rotating rods respectively, and are located on the side of the rotating plate relative to the base; the gear one extends through the rotating plate through the correspondingly connected rotating rod and is fixedly connected to the sprocket two.

[0024] In a further technical solution, the fixing member includes a fixing block, a movable groove is formed at the upper end of the rotating plate, and the fixing block penetrates the movable groove and the fixing groove and moves inside;

[0025] A tooth plate is fixedly connected to the lower side of the inner surface of the fixing groove, and a tooth bar is arranged at the bottom end of the fixing block located at the fixing groove, and the tooth bar is adapted to and meshed with the tooth plate.

[0026] In a further technical solution, a socket is provided at the other end of the fixed block, and the socket extends to the inside of the rotating plate. The inner surface of the socket is slidably connected with an insertion rod, and the insertion rod has a T-shaped structure; a spring is fixedly connected between the insertion rod and the socket, and one end of the insertion rod extends to the outside of the fixed block and is fixedly connected with a connecting plate.

[0027] A method for using a building steel structure welding deformation correction device, the specific operation is as follows:

[0028] Step 1: Remove restrictions

[0029] When it is necessary to correct H-beams of different sizes, pull the connecting plate to drive the plug rod to move synchronously, so that the plug rod slides out from the inside of the rotating plate and compresses the spring;

[0030] Then, the fixed block is pulled upward to make the fixed block slide upward inside the fixed groove and the movable groove, thereby releasing the meshing relationship between the fixed block and the tooth plate;

[0031] The connecting plate slides to the right inside the socket provided inside the fixed block, and the fixed block does not move. The fixed block moves upwards while driving the connecting plate to move together.

[0032] Then the rotating plate rotates around the connecting rod to drive gear 1, gear 2, and gear 3 to move synchronously, releasing the meshing relationship with gear 4;

[0033] Step 2: Vertical abutment

[0034] Then, the H-shaped steel is placed on the upper surface of the second straightening roller and the transmission roller. When the hydraulic cylinder starts to work, it drives the mounting frame to slide downward inside the slide slot, so that the straightening roller abuts against the upper surface of the H-shaped steel. The hydraulic cylinder stops working and rotates in the opposite direction.

[0035] Step 3: Position determination

[0036] When gear four is located at the lower side of the slide slot, gear four is meshed and connected with gear one;

[0037] When gear 4 is located at the center of the slide slot, gear 4 is meshed with gear 1 and gear 3;

[0038] When gear four is located on the upper side of the slide slot, gear four is meshed and connected with gear three;

[0039] Because gear one and gear three are of the same size and meshed with gear two, gear one and gear three rotate in the same direction and at the same speed, that is, in the three cases where the rotating plate is meshed with gear one, gear three, or gear one and gear three are meshed with gear four, gear four can be driven to rotate synchronously;

[0040] Step 4: Lateral abutment

[0041] Then, the fixed block is pulled down to make it mesh with the toothed plate. At the same time, the plug rod is re-engaged in the rotating plate under the elastic force of the spring to fix the rotating plate. The hydraulic cylinder 2 starts to work and drives the mounting frame 2 and the correction roller 3 to move in the direction of the H-beam. When the correction roller 3 contacts the left and right sides of the web of the H-beam, the hydraulic cylinder 2 stops working.

[0042] Step 5: Corrective work

[0043] When the H-beam needs to be corrected, the motor starts working to drive the correction roller 2 and the sprocket 1 fixedly connected to the correction roller 2 through the connecting rod to rotate synchronously. The rotation of the sprocket 1 drives the sprocket 2 meshing with it through the chain to rotate synchronously. The rotation of the sprocket 2 drives the gear 1 to rotate, and drives the gear 2 and the gear 3 to rotate synchronously, thereby driving the gear 4 meshing with the gear 1 and / or the gear 3 to rotate in the opposite direction; the reverse rotation of the gear 4 drives the correction roller 1 rotationally connected to it through the rotating shaft to rotate synchronously. Because the correction roller 2 and the correction roller 1 rotate in the opposite directions, the H-beam is driven to move backward under the restriction of the upper surface of the transmission roller and the correction roller 3.

[0044] Beneficial Effects

[0045] (1) The present invention realizes the correction of H-shaped steel by the cooperation of the first correcting member and the second correcting member. The device can correct H-shaped steel of different sizes by the cooperation of the adjusting member and the fixing member. There is no need to replace the correction equipment. The device has strong compatibility, is easy to use, and reduces processing costs.

[0046] (2) The present invention realizes lateral movement through the T-shaped structure and spring at the insertion rod, and realizes the meshing of the rack and the tooth plate by the up and down movement of the fixed block, thereby controlling the up and down movement of the correction roller 1, thereby controlling the abutment of the upper wing plate of the H-shaped steel to ensure the correction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A schematic diagram of the structure of a building steel structure welding deformation correction device provided in this application;

[0049] Figure 2 A schematic diagram of the chain structure of a building steel structure welding deformation correction device provided in this application;

[0050] Figure 3 A schematic diagram of the side cross-section structure of a gear 2 of a building steel structure welding deformation correction device provided in the present application;

[0051] Figure 4 This is a schematic diagram of the oblique cross-section structure of a rotating plate of a building steel structure welding deformation correction device provided in the present application;

[0052] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A;

[0053] Figure 6 A schematic structural diagram of a fixing block of a building steel structure welding deformation correction device provided in this application.

[0054] In the figure: 1. base; 2. mounting plate; 21. hydraulic cylinder 1; 22. mounting frame 1; 23. slide; 24. straightening roller 1; 25. motor; 26. straightening roller 2; 27. transmission roller; 3. hydraulic cylinder 2; 31. mounting frame 2; 32. straightening roller 3; 4. rotating plate; 41. protective box; 42. sprocket 1; 43. sprocket 2; 44. chain; 45. gear 1; 46. gear 2; 47. gear 3; 48. gear 4; 5. fixed groove; 51. movable groove; 52. fixed block; 53. tooth plate; 6. socket; 61. plug rod; 62. spring; 63. connecting plate; 7. H-shaped steel. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0057] Example 1

[0058] Please refer to Figures 1 to 6 A device for correcting welding deformation of a building steel structure and a method for using the same include a base 1 and an H-shaped steel 7. The upper and lower sides of the H-shaped steel 7 are fitted with a first correcting piece for correcting the H-shaped steel 7. The inner side of the base 1 is located on both sides of the H-shaped steel 7 and is fixedly connected with a second correcting piece. The bottom end of the left side of the base 1 is fixedly connected with a motor 25, and the output end of the motor 25 is rotatably connected with a linkage piece. The top end of the right side of the base 1 is provided with a fixing groove 5, and the inner surface of the fixing groove 5 is slidably connected with a fixing piece for fixing the linkage piece. The linkage part includes a rotating plate 4, the output shaft of the motor 25 extends to the right side of the base 1 and is fixedly connected to a connecting rod, the outer surface of the connecting rod is rotatably connected to the rotating plate 4, the right side of the rotating plate 4 is fixedly connected to a protective box 41, the connecting rod extends to the inside of the protective box 41 and is fixedly connected to a sprocket 1 42, the outer surface of the sprocket 1 42 is meshedly connected to a chain 44, the inner surface of the chain 44 is meshedly connected to a sprocket 2 43, the correction roller 1 24 extends to the right side of the base 1 through the rotating shaft and is fixedly connected to a gear 48, the outer surface of the gear 48 is meshedly connected to a gear 1 45, the outer surface of the gear 1 45 is meshedly connected to a gear 2 46, the outer surface of the gear 2 46 is meshedly connected to a gear 3 47, the gear 1 45, the gear 2 46, and the gear 3 47 are rotatably connected to the left side of the rotating plate 4 through the rotating rod respectively, and the gear 1 45 extends to the right side of the rotating plate 4 through the fixedly connected rotating rod and is fixedly connected to the sprocket 2 43. The fixing member includes a fixing block 52, a movable groove 51 is provided at the upper end of the rotating plate 4, the fixing block 52 is slidably arranged inside the fixing groove 5 and the movable groove 51, a tooth plate 53 is fixedly connected to the lower side of the inner surface of the fixing groove 5, one end of the fixing block 52 is located inside the fixing groove 5 and is provided with a rack matching the tooth plate 53, and the rack is meshed and connected with the tooth plate 53. A plug hole 6 is provided at the other end of the fixing block 52, the plug hole 6 extends to the inside of the rotating plate 4, a plug rod 61 is slidably connected to the inner surface of the plug hole 6, a spring 62 is fixedly connected between the plug rod 61 and the plug hole 6, and one end of the plug rod 61 extends to the outside of the fixing block 52 and is fixedly connected to a connecting plate 63.

[0059] Implementation process: When it is necessary to correct H-shaped steels 7 of different sizes, pull the connecting plate 63 to drive the plug rod 61 to move synchronously, so that the plug rod 61 slides out from the inside of the rotating plate 4 and compresses the spring 62, and then pull the fixed block 52 to slide inside the fixed groove 5 and the movable groove 51, and release the meshing relationship between the fixed block 52 and the toothed plate 53, and then rotate the rotating plate 4 around the connecting rod to drive the gear 1 45, gear 2 46, and gear 3 47 to move synchronously, and release the meshing relationship with the gear 4 48, and then place the H-shaped steel 7 on the upper surface of the correction roller 2 26 and the transmission roller 27, and the hydraulic cylinder 1 21 starts to work and drives the mounting frame 1 22 to slide downward inside the slide groove 23, so that the correction roller 1 24 fits with the upper surface of the H-shaped steel 7, and the hydraulic cylinder 1 21 stops working and rotates in the opposite direction. When the gear 4 48 is located at the lower side of the slide groove 23, the gear 4 48 is meshed and connected with the gear 1 45. When the gear 4 48 is located at the center position of the slide groove 23, When the gear 48 is located at the upper side of the slide groove 23, the gear 48 is meshed with the gear 3 47. Because the gear 45 and the gear 3 47 are of the same size and are meshed with each other through the gear 2 46, the gear 1 45 and the gear 3 47 have the same rotation direction and the same rotation speed. That is, in the three cases where the rotating plate 4 is meshed with the gear 1 45 and the gear 3 47 or the gear 1 45 and the gear 3 47 are meshed with the gear 4 48 together, the gear 4 48 can be driven to rotate synchronously. Then the fixing block 52 is pulled downward so that the fixing block 52 is meshed with the toothed plate 53. At the same time, the insert rod 61 is re-inserted into the interior of the rotating plate 4 under the elastic force of the spring 62 to fix the rotating plate 4. The hydraulic cylinder 2 3 starts to work and drives the mounting frame 2 31 and the correction roller 3 32 to move in the direction of the H-shaped steel 7. When the correction roller 3 32 is in contact with the left and right sides of the H-shaped steel 7, the hydraulic cylinder 2 3 stops working.

[0060] Implementation benefits: H-beams 7 of different sizes can be corrected, and the compatibility is strong.

[0061] The first correction part includes a correction roller 1 24 and a correction roller 2 26. The top of the inner surface of the base 1 is fixedly connected with a mounting plate 2. The center of the upper surface of the mounting plate 2 is fixedly connected with a hydraulic cylinder 1 21. The output end of the hydraulic cylinder 1 21 passes through the mounting plate 2 and is fixedly connected with a mounting frame 1 22. Slide grooves 23 are provided on both sides of the base 1. The mounting frame 1 22 is slidably arranged inside the slide grooves 23. The inner side of the mounting frame 1 22 is rotatably connected with the correction roller 1 24 through a rotating shaft. The outer surface of the output shaft of the motor 25 is fixedly connected with the correction roller 2 26. The correction roller 2 26 is located inside the base 1. The correction roller 1 24 and the correction roller 2 26 are respectively arranged to fit the upper and lower sides of the H-shaped steel 7. The second correcting member includes a hydraulic cylinder 23, which is fixedly arranged on both sides of the inner side of the base 1, and the output end of the hydraulic cylinder 23 is fixedly connected to a mounting frame 21, and the inner side of the mounting frame 21 is rotatably connected to a correcting roller 32 through a connecting shaft, and transmission rollers 27 are connected to both sides of the correcting roller 26, and the transmission rollers 27 are rotatably arranged with the inner wall surface of the base 1.

[0062] Implementation process: When the H-beam 7 needs to be corrected, the motor 25 starts working to drive the correction roller 26 and the sprocket 1 42 fixedly connected to the correction roller 26 through the connecting rod to rotate synchronously, and the rotation of the sprocket 1 42 drives the sprocket 2 43 meshed with it through the chain 44 to rotate synchronously, and the rotation of the sprocket 2 43 drives the gear 1 45 and the gear 3 47 meshed with the gear 1 45 through the gear 2 46 to rotate synchronously, thereby driving the gear 4 48 meshed with the gear 1 45, the gear 3 47 or the gear 1 45 and the gear 3 47 to rotate in the opposite direction, and the reverse rotation of the gear 4 48 drives the correction roller 1 24 rotationally connected to it through the rotating shaft to rotate synchronously, because the correction roller 2 26 and the correction roller 1 24 rotate in the opposite directions, thereby driving the H-beam 7 to move backward under the restriction of the upper surface of the transmission roller 27 and the correction roller 3 32.

[0063] Implementation benefits: The correction function of H-beam 7 is realized.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding deformation correction device for building steel structures, Features: It comprises a base (1) and an H-shaped steel (7); the base (1) is in a "C" shape and is open upward; the H-shaped steel (7) is located inside the base (1); The upper and lower side surfaces of the H-shaped steel (7) are provided with first correcting members for correcting the H-shaped steel (7); The inner side surface of the base (1) is connected to a second correcting member on both sides of the H-shaped steel (7); A motor (25) is fixedly connected to the bottom end of the side surface of the base (1), and a linkage member is rotatably connected to the output end of the motor (25); A fixing groove (5) is provided at the top of a side surface of the base (1) away from the motor (25), and a fixing piece for fixing the linkage piece is slidably connected to the inner surface of the fixing groove (5).

2. A welding deformation correction device for building steel structures according to claim 1, It is characterized in that The first correction member comprises a correction roller 1 (24) and a correction roller 2 (26), and the correction roller 1 (24) and the correction roller 2 (26) are distributed on the upper and lower sides of the H-shaped steel (7); The top inner side of the base (1) is fixedly connected to a mounting plate (2), the center position of the upper surface of the mounting plate (2) is fixedly connected to a hydraulic cylinder (21), the cylinder body of the hydraulic cylinder (21) is connected to the mounting plate (2), and the output end of the hydraulic cylinder (21) passes downward through the mounting plate (2) and is fixedly connected to a mounting frame (22); The two side surfaces of the base (1) are provided with slide grooves (23), which are arranged vertically; the two sides of the mounting frame (22) slide in the slide grooves (23), the two ends of the mounting frame (22) are bent downward, and the inner side surface is rotatably connected to a correction roller (24) via a mounting rotation shaft.

3. A welding deformation correction device for building steel structures according to claim 2, It is characterized in that The output shaft of the motor (25) is coaxially fixedly connected to the second straightening roller (26), and the second straightening roller (26) is located inside the base (1). The first straightening roller (24) and the second straightening roller (26) are suitable for movably contacting the wing plates on the upper and lower sides of the H-shaped steel (7) respectively.

4. A welding deformation correction device for building steel structures according to claim 2, It is characterized in that The second correcting member comprises a second hydraulic cylinder (3), the cylinder body of the second hydraulic cylinder (3) being fixed on the inner side surface of the base (1) and being symmetrically arranged in two groups; the output end of the second hydraulic cylinder (3) is fixedly connected to a second mounting frame (31), the second mounting frame (31) is in a "C" shape, and the inner side surface is rotatably connected to a third correcting roller (32) via a mounting connecting shaft; the third correcting roller (32) is arranged vertically.

5. A welding deformation correction device for building steel structures according to claim 4, It is characterized in that Transmission rollers (27) are connected to both sides of the second correction roller (26), both ends of the transmission roller (27) extend into the base (1) and are provided with connecting bearings, and the transmission roller (27) rotates relatively inside the base (1); The transmission roller (27) and the second correction roller (26) are at the same level.

6. A welding deformation correction device for building steel structures according to claim 5, It is characterized in that The linkage member comprises a rotating plate (4), and one end of the second correction roller (26) facing away from the motor (25) extends to the outer side surface of the base (1) and is coaxially fixedly connected with a connecting rod; A protective box (41) is fixedly connected to the side of the rotating plate (4) facing away from the base (1), the connecting rod extends to the interior of the protective box (41) and is fixedly connected to a sprocket wheel one (42), the outer surface of the sprocket wheel one (42) is meshedly connected to a chain (44), the inner surface of the chain (44) is meshedly connected to a sprocket wheel two (43), and the sprocket wheel two (43) is located at the upper end of the sprocket wheel one (42); The correction roller 1 (24) is extended to the outside of the base (1) by installing a rotating shaft, and is fixedly connected to a gear 4 (48), the outer surface of the gear 4 (48) is meshingly connected to a gear 1 (45), the outer surface of the gear 1 (45) is meshingly connected to a gear 2 (46), and the outer surface of the gear 2 (46) is meshingly connected to a gear 3 (47); The gear 1 (45), gear 2 (46) and gear 3 (47) are rotatably connected to the rotating plate (4) by installing rotating rods, and are located on the side of the rotating plate (4) opposite to the base (1); the gear 1 (45) extends through the rotating plate (4) through the correspondingly connected rotating rods and is fixedly connected to the sprocket 2 (43).

7. A welding deformation correction device for building steel structures according to claim 6, It is characterized in that The fixing member comprises a fixing block (52), a movable groove (51) is formed at the upper end of the rotating plate (4), and the fixing block (52) penetrates the movable groove (51) and the fixing groove (5) and moves inside. A toothed plate (53) is fixedly connected to the lower side of the inner surface of the fixing groove (5), and a toothed bar is arranged at the bottom end of the fixing block (52) located at the fixing groove (5), and the toothed bar is adapted to and meshed with the toothed plate (53).

8. A welding deformation correction device for building steel structures according to claim 7, It is characterized in that The other end of the fixed block (52) is provided with a plug hole (6), the plug hole (6) extends to the inside of the rotating plate (4), the inner surface of the plug hole (6) is slidably connected with an insertion rod (61), and the insertion rod (61) is in a T-shaped structure; a spring (62) is fixedly connected between the insertion rod (61) and the plug hole (6), and one end of the insertion rod (61) extends to the outside of the fixed block (52) and is fixedly connected with a connecting plate (63).

9. A method for using a welding deformation correction device for a building steel structure, comprising the welding deformation correction device for a building steel structure according to claim 8, Features: The specific operations are as follows: Step 1: Remove restrictions When it is necessary to correct H-shaped steels (7) of different sizes, the connecting plate (63) is pulled to drive the insertion rod (61) to move synchronously, so that the insertion rod (61) slides out from the inside of the rotating plate (4) and compresses the spring (62); Then, the fixed block (52) is pulled upward to make the fixed block (52) slide upward inside the fixed groove (5) and the movable groove (51), thereby releasing the meshing relationship between the fixed block (52) and the toothed plate (53); then, the rotating plate (4) is rotated around the connecting rod to drive the gear 1 (45), the gear 2 (46), and the gear 3 (47) to move synchronously, thereby releasing the meshing relationship with the gear 4 (48); Step 2: Vertical abutment Then, the H-shaped steel (7) is placed on the upper surfaces of the second straightening roller (26) and the transmission roller (27), and the first hydraulic cylinder (21) starts to work to drive the first mounting frame (22) to slide downward inside the slide groove (23), so that the first straightening roller (24) abuts against the upper surface of the H-shaped steel (7), and the first hydraulic cylinder (21) stops working and rotates in the opposite direction; Step 3: Position determination When the gear four (48) is located at the lower side of the slide slot (23), the gear four (48) is meshed and connected with the gear one (45); When the gear 4 (48) is located at the center of the slide slot (23), the gear 4 (48) is meshed and connected with the gear 1 (45) and the gear 3 (47); When the gear four (48) is located on the upper side of the slide slot (23), the gear four (48) is meshed and connected with the gear three (47); Because the gear 1 (45) and the gear 3 (47) are of the same size and meshed with each other through the gear 2 (46), the gear 1 (45) and the gear 3 (47) rotate in the same direction and at the same speed, that is, in the three cases where the rotating plate (4) is meshed with the gear 1 (45), the gear 3 (47), or the gear 1 (45) and the gear 3 (47) are meshed with the gear 4 (48), the gear 4 (48) can be driven to rotate synchronously; Step 4: Lateral abutment Then, the fixing block (52) is pulled downward to make the fixing block (52) mesh with the tooth plate (53), and at the same time, the insertion rod (61) is re-engaged in the interior of the rotating plate (4) under the elastic force of the spring (62) to fix the rotating plate (4), and the hydraulic cylinder 2 (3) starts to work to drive the mounting frame 2 (31) and the correction roller 3 (32) to move in the direction of the H-shaped steel (7). When the correction roller 3 (32) abuts against the left and right sides of the web of the H-shaped steel (7), the hydraulic cylinder 2 (3) stops working; Step 5: Corrective work When the H-beam (7) needs to be corrected, the motor (25) starts to work and drives the correction roller 2 (26) and the sprocket 1 (42) fixedly connected to the correction roller 2 (26) through the connecting rod to rotate synchronously. The rotation of the sprocket 1 (42) drives the sprocket 2 (43) meshed with it through the chain (44) to rotate synchronously. The rotation of the sprocket 2 (43) drives the gear 1 (45) to rotate, and drives the gear 2 (46) and the gear 3 (47) to rotate synchronously, thereby driving the gear 4 (48) meshed with the gear 1 (45) and / or the gear 3 (47) to rotate in the opposite direction; the reverse rotation of the gear 4 (48) drives the correction roller 1 (24) connected to it through the rotating shaft to rotate synchronously. Because the correction roller 2 (26) and the correction roller 1 (24) rotate in the opposite direction, the H-beam (7) is driven to move backward under the restriction of the upper surface of the transmission roller (27) and the correction roller 3 (32).

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