A device for correcting welding deformation of a steel structural member

Abstract

The present application belongs to the technical field of steel structure processing equipment, in particular to a steel structure component welding deformation correction device, which comprises a flame spray gun, the flame spray gun is connected with a gas supply device through a pipeline; it also comprises an automatic guide assembly, the flame spray gun is installed on the automatic guide assembly, and the automatic guide assembly is used for guiding the movement track of the flame spray gun; by setting the automatic guide assembly, the fixed seat and the guide rope are matched to provide support and guidance for the transverse movement of the flame spray gun, and the longitudinal movement of the lifting seat is matched, so that the flame spray gun can perform linear heating correction on the steel structure component; on the one hand, the automatic operation mode can effectively reduce the labor intensity of the workers, on the other hand, the driving motor is used to drive the flame spray gun to move transversely and longitudinally, so that the movement speed of the flame spray gun is more uniform, and the heating effect on the steel structure component is better.

Description

Technical Field

[0001] This invention belongs to the technical field of steel structure processing equipment, specifically a welding deformation correction device for steel structure components. Background Technology

[0002] H-steel has significant advantages in load-bearing capacity and stability due to its unique H-shaped cross-section. In the construction field, H-steel has become the preferred material for high-rise buildings and large-span structures due to its excellent mechanical properties. When using H-steel to manufacture steel structural components, welding is a common connection process. However, during the welding process, due to problems such as uneven heating of the steel, the steel structural components will undergo local or overall deformation such as bending, twisting, and shrinkage.

[0003] In related technologies, after the welding process is completed, steel structure components usually need to undergo measurement and straightening procedures to eliminate the impact of welding deformation on the steel structure components and ensure that the size and shape of the steel structure components meet production requirements. In the process of correcting welding deformation, heating straightening uses uneven heating to induce reverse deformation in the structure to compensate for or offset the original welding deformation. Heating straightening can eliminate many deformations that cannot be solved by force straightening, so it is often used in the correction of welding deformation in steel structure components. Heating straightening is further divided into point heating method, line heating method and triangular heating method according to the specific construction method. Among them, the line heating method refers to the flame moving along a straight line or swinging laterally in the width direction to form a strip of heating, which is called line heating. The advantage of line heating straightening is mainly reflected in its correcting effect on structures with large deformation or high rigidity. Therefore, in the straightening process of H-steel steel structure components, the line heating method has a better application effect.

[0004] A related technology discloses a method for heating and straightening welded structures (application number CN2018110805293). This method includes: a first heating and straightening process on the parts of the welded structure that exhibit bending deformation, so that the bending deflection of the welded structure is less than or equal to a preset threshold; after the first heating and straightening process is completed, a second heating and straightening process is performed on the parts of the welded structure that exhibit torsional deformation. The second heating and straightening process utilizes a gradually widening flame for heating and straightening. The flame width on the side of the welded structure with smaller torsional deformation is smaller than the flame width on the side with larger torsional deformation, thus completing the straightening operation. However, in practical application, it has been found that, on the one hand, due to the large volume of the building steel structure components, the linear heating process requires a long flame movement path; on the other hand, the two heating processes and the gradually widening heating further extend the flame movement path, thus increasing the workload for workers heating the steel structure components.

[0005] In view of this, the present invention proposes a welding deformation correction device for steel structure components to solve the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a welding deformation correction device for steel structure components.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a steel structure component welding deformation correction device according to the present invention, including a flame spray gun, wherein the flame spray gun is connected to an external gas supply device through a pipeline;

[0008] It also includes an automatic guidance assembly, on which the flame gun is mounted, and the automatic guidance assembly is used to guide the movement trajectory of the flame gun;

[0009] The automatic guidance assembly includes a fixed base, a movable base, a guide cable, and a lifting base;

[0010] The fixed seat is detachably fixedly installed on the steel structure component. The fixed seats are parallel and symmetrically designed. All fixed seats are C-shaped structures. The movable seat is located between two fixed seats.

[0011] A guide cable is installed on both of the fixed seats. A through hole is provided on the movable seat. The guide cable extends into the through hole. The flame gun is detachably fixedly installed on the movable seat.

[0012] The movable seat is provided with a lifting groove, and a lifting seat is slidably installed on the movable seat. The lifting seat extends into the lifting groove, and a reciprocating screw is rotatably installed in the lifting groove. A nut is embedded in the lifting seat, and the reciprocating screw and the nut form a screw drive pair.

[0013] A drive motor is fixedly installed on the movable seat. The output end of the drive motor is fixedly connected to a reciprocating lead screw. A transmission wheel set is installed on the reciprocating lead screw. The transmission wheel set extends into the through hole and is driven by friction with the guide cable.

[0014] Preferably, the lifting seat has a T-shaped design, and an adjustment groove is provided at the end of the lifting seat away from the moving seat. An adjustment screw is rotatably installed in the adjustment groove, and a symmetrically designed connecting piece is slidably installed in the adjustment groove. The flame gun is installed on the connecting piece. The adjustment screw has a left-hand thread and a right-hand thread at its two ends, and the adjustment screw and the connecting piece form a helical transmission pair.

[0015] Preferably, all the connecting parts are made of spring telescopic rods, and the end of the connecting part away from the lifting seat is designed with an arc shape, and the flame gun is installed at the extended end of the connecting part.

[0016] Preferably, one of the fixed seats has a winding groove, a winding shaft is rotatably installed in the winding groove, the guide cable is wound on the winding shaft, a winding motor is fixedly installed on the winding shaft, and the output end of the winding motor is fixedly connected to the winding shaft.

[0017] Preferably, an elastic pad is fixedly installed in the winding groove, a first pressure sensor is installed on the elastic pad, the guide cable passes through the surface of the first pressure sensor, the first pressure sensor is electrically connected to the winding motor, and the first pressure sensor is used to control the forward and reverse rotation of the winding motor.

[0018] Preferably, the movable seat is equipped with a symmetrically designed push-pull plate, which is made of a spring telescopic plate. A symmetrically designed connecting wheel is rotatably installed at the end of the push-pull plate away from the movable seat. The fixed seat is a C-shaped structure. The push-pull plate, the fixed seat, and the connecting parts cooperate to perform multi-point correction on the steel structure frame.

[0019] Preferably, the push-pull plate has a sliding groove, a slide bar is slidably installed in the sliding groove, one of the connecting wheels is rotatably installed on the slide bar, and a fastening bolt is threaded on the push-pull plate, the fastening bolt extending into the sliding groove.

[0020] Preferably, the fixing base consists of a base plate and a mounting rod. The mounting rod is a rod-shaped structure with an adjustable length. The mounting rod is used to connect with the steel structure component. A reference rod is fixedly installed in the middle of the fixing base. In the initial state, the reference rod provides a reference for the initial length of the connector and the push-pull plate.

[0021] Preferably, a second pressure sensor is fixedly installed inside both the push-pull plate and the connector. The second pressure sensor is used to detect the magnitude of the spring force inside the push-pull plate and the connector.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The steel structure component welding deformation correction device of the present invention, by setting an automatic guide component, uses a fixed seat and guide cable to provide support and guidance for the lateral movement of the flame gun, and in conjunction with the longitudinal movement of the lifting seat, can drive the flame gun to perform linear heating correction on the steel structure component. On the one hand, the automated operation mode can effectively reduce the labor intensity of the workers. On the other hand, the use of a drive motor to drive the flame gun to perform lateral and longitudinal movements simultaneously can make the flame gun movement speed more uniform and the heating effect on the steel structure component better.

[0024] 2. The steel structure component welding deformation correction device of the present invention maintains the guide cable pressure close to the threshold to maintain the normal movement of the moving seat and other structures. By controlling the tension of the guide cable, the starting and closing of the winding motor can be made more intelligent. On the one hand, it effectively avoids the problem of guide cable breakage, and on the other hand, it can maintain the normal operation of the moving seat and other structures, so that the flame heating correction process can be carried out. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a three-dimensional view of the invention assembled with steel structure components;

[0027] Figure 2 This is a perspective view of the assembly of the fixing base and the guide cable in this invention;

[0028] Figure 3 It is a 3D diagram of the movable seat;

[0029] Figure 4 This is a cross-sectional view of the movable seat;

[0030] Figure 5 yes Figure 4 Enlarged view of a section at point B in the middle;

[0031] Figure 6 This is a partial sectional view of the mounting base;

[0032] In the diagram: 1. Flame gun; 2. Mounting base; 21. Base plate; 22. Mounting rod; 23. Moving base; 24. Guide cable; 25. Through hole; 26. Lifting groove; 27. Lifting base; 28. Reciprocating screw; 29. ​​Drive motor; 2A. Transmission wheel set; 3. Adjusting groove; 31. Adjusting screw; 32. Connecting piece; 4. Winding groove; 41. Winding shaft; 42. Winding motor; 43. Elastic pad; 44. First pressure sensor; 5. Push-pull plate; 51. Connecting wheel; 52. Slide groove; 53. Slide bar; 55. Fastening bolt; 56. Reference rod; 57. Second pressure sensor. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 6 As shown, the steel structure component welding deformation correction device of the present invention includes a flame gun 1, which is connected to a gas supply device through a pipeline.

[0035] It also includes an automatic guidance assembly, on which the flame gun 1 is mounted, and the automatic guidance assembly is used to guide the movement trajectory of the flame gun 1;

[0036] The automatic guidance assembly includes a fixed base 2, a movable base 23, a guide cable 24, and a lifting base 27;

[0037] The fixed seat 2 is detachably fixedly installed on the steel structure component. The fixed seat 2 is designed in parallel and symmetrically. The fixed seat 2 is a C-shaped structure. The movable seat 23 is located between the two fixed seats 2.

[0038] Guide cables 24 are installed on both fixed seats 2. A through hole 25 is provided on the movable seat 23. The guide cables 24 extend into the through hole 25. The flame gun 1 is detachably fixedly installed on the movable seat 23.

[0039] The movable seat 23 is provided with a lifting groove 26, and a lifting seat 27 is slidably installed on the movable seat 23. The lifting seat 27 extends into the lifting groove 26, and a reciprocating screw 28 is rotatably installed in the lifting groove 26. A nut is embedded in the lifting seat 27, and the reciprocating screw 28 and the nut form a screw transmission pair.

[0040] A drive motor 29 is fixedly installed on the movable seat 23. The output end of the drive motor 29 is fixedly connected to the lead screw. A transmission wheel set 2A is installed on the lead screw. The transmission wheel set 2A extends into the through hole 25 and is driven by friction with the guide cable 24.

[0041] When performing flame heating straightening on large steel structure components, due to the large volume and deformation range of the steel structure components, continuous and large-scale linear heating is required. In order to ensure the effect of heating straightening, it is usually necessary to perform heating twice or more. Since the operation of large-scale linear heating is highly repeatable and easy, in order to reduce the labor intensity of workers, this invention is equipped with an automatic guidance component. By installing the flame gun 1 on the automatic guidance component, the automatic guidance component guides the movement trajectory of the flame gun 1, thereby driving the flame gun 1 to automatically heat the steel structure component in a linear heating manner.

[0042] Specifically, during the flame heating and straightening operation of welded steel structure components, it is necessary to first collect parameters such as the dimensions and deformation degree of the steel structure components. Then, based on the collected data, the flame heating and straightening operation area is determined. Subsequently, the automatic guide assembly is installed on the steel structure components. During installation, two fixed seats 2 are symmetrically installed on both sides of the designated area to be heated. Infrared rangefinders and other equipment are used to assist in installation, ensuring that the two fixed seats 2 are parallel and on the same horizontal plane after installation. Furthermore, the guide cable 24 between the two fixed seats 2 is kept taut during the installation process. The movable seat 23, installed on the guide cable 24, is on the same horizontal plane as the two fixed seats 2. It should be noted that in this invention, the fixed seats 2 are detachably fixed to the steel structure component. The preferred fixing method is a mature existing technology such as magnetic adsorption or clamping. In this embodiment, the end of the fixed seat 2 is clamped and fixed to the steel structure component. The operator manually pushes the movable seat 23 until it moves along the guide cable 24 to one end of the area to be heated, and then installs the flame gun 1 on the lifting seat 27. Subsequently, the operator starts the drive motor 29 through a pre-set program to drive... The output of the motor 29 drives the lead screw to rotate. Since the lead screw and the nut embedded in the lifting seat 27 form a helical transmission pair, and the lifting seat 27 is slidably connected to the lifting groove 26, when the lead screw rotates, the lifting seat 27 performs linear lifting and lowering motion within the lifting groove 26. At the same time, since the lead screw and the guide cable 24 are driven by the transmission wheel set 2A, when the lead screw rotates, it drives the transmission wheel set 2A to rotate. The transmission wheel set 2A and the guide cable 24 are driven by friction, thus causing the moving seat 23 to perform directional movement on the guide cable 24. At this time, the flame gun 1 is activated, and the external gas supply equipment continuously supplies gas, causing the flame gun 1 to continuously spray. The flame is sprayed onto the steel structure component, heating it. Combined with the lifting motion of the lifting seat 27 and the horizontal movement of the moving seat 23, the steel structure component is linearly heated and corrected. As the drive motor 29 continues to drive, when the moving seat 23 moves from one end of the heated area to the other, the operator controls the drive motor 29 again through a pre-set degree to stop the equipment. Then the flame gun 1 is turned off, thus completing the first flame heating and correction. After the steel structure component has cooled, it can be flame heated and corrected again according to the planned heating and correction process.

[0043] This invention, by setting up an automatic guidance component, uses the fixed base 2 and the guide cable 24 to provide support and guidance for the lateral movement of the flame gun 1. Combined with the longitudinal movement of the lifting base 27, it can drive the flame gun 1 to perform linear heating and correction on the steel structure component. On the one hand, the automated operation can effectively reduce the labor intensity of the workers. On the other hand, the use of the drive motor 29 to drive the flame gun 1 to perform lateral and longitudinal movements simultaneously can make the movement speed of the flame gun 1 more uniform and the heating effect on the steel structure component better.

[0044] In a preferred embodiment of the present invention, the lifting seat 27 is T-shaped, and an adjustment groove 3 is provided at the end of the lifting seat 27 away from the moving seat 23. An adjustment screw 31 is rotatably installed in the adjustment groove 3, and a symmetrically designed connecting piece 32 is slidably installed in the adjustment groove 3. The flame gun 1 is installed on the connecting piece 32. The two ends of the adjustment screw 31 are left-hand thread and right-hand thread, respectively. The adjustment screw 31 and the connecting piece 32 form a helical transmission pair.

[0045] To further enhance the flexibility of adjusting the movement area of ​​the flame gun 1, the present invention provides symmetrical connecting parts 32, each of which is equipped with a flame gun 1. When adjusting the longitudinal movement range of the flame gun 1, the operator manually turns the adjusting screw 31 with the aid of a tool, causing the adjusting screw 31 to rotate. Since the two ends of the adjusting screw 31 are left-handed and right-handed threads respectively, the two connecting parts 32 move in opposite directions when the adjusting screw 31 rotates, thus causing the two connecting parts 32 to move closer or further apart. Since the lifting seat 27 has a T-shaped design and the vertical movement distance of the lifting seat 27 is fixed, when the distance between the two connecting parts 32 is shortened, the longitudinal movement distance of the flame gun 1 decreases, and when the distance between the two connecting parts 32 is increased, the longitudinal movement distance of the flame gun 1 increases. Therefore, before multiple flame heating operations, the operator can adjust the longitudinal range of the flame heating area by rotating the adjusting screw 31.

[0046] In a preferred embodiment of the present invention, the connectors 32 are all made of spring telescopic rods, and the end of the connector 32 away from the lifting seat 27 is designed with an arc shape. The flame gun 1 is installed at the extended end of the connector 32.

[0047] Because the steel structure components are bent and twisted before correction, in order to enhance the uniformity of the heating effect of the flame on the steel structure components, the connector 32 in this invention is made of a spring telescopic rod, and the flame gun 1 is installed on the extended end of the connector 32, and the extended end of the connector 32 is in contact with the steel structure components. Therefore, when the connector 32 moves with the lifting seat 27 and the moving seat 23, since the position of the flame gun 1 on the extended end of the connector 32 is fixed, and the extended end of the connector 32 is in contact with the steel structure components, the distance between the flame gun 1 and the steel structure components is constant. Combined with the uniform movement of the flame gun 1, the uniformity of the heating effect on the steel structure components is effectively enhanced.

[0048] In a preferred embodiment of the present invention, a winding groove 4 is provided on one of the fixed bases 2, a winding shaft 41 is rotatably installed in the winding groove 4, the guide cable 24 is wound on the winding shaft 41, a winding motor 42 is fixedly installed on the winding shaft 41, and the output end of the winding motor 42 is fixedly connected to the winding shaft 41.

[0049] An elastic pad 43 is fixedly installed inside the winding groove 4. A first pressure sensor 44 is installed on the elastic pad 43. The guide cable 24 passes through the surface of the first pressure sensor 44. The first pressure sensor 44 is electrically connected to the winding motor 42. The first pressure sensor 44 is used to control the forward and reverse rotation of the winding motor 42.

[0050] To further enhance the ease of installation, this invention includes a winding motor 42 and a winding shaft 41. In practical application, the operator fixes two mounting bases 2 on both sides of the area to be heated, according to the planned range. Then, the winding motor 42 is started, driving the winding shaft 41 to rotate, thereby winding the guide cable 24. This causes the guide cable 24 between the two mounting bases 2 to tighten. During the tightening process, as the guide cable 24 is gradually wound up, it gradually straightens, thus pressing against the first pressure sensor 44 and the elastic pad 43. As the value of the first pressure sensor 44 gradually approaches a preset threshold, the rotation speed of the winding motor 42 gradually decreases until the value of the first pressure sensor 44 matches the threshold. Under the control of a preset program, the device then... This causes the winding motor 42 to stop. Then, when the moving seat 23 moves, if the moving distance of the steel structure component pushing the connecting piece 32 is greater than the extension length of the connecting piece 32, pressure is applied to the guide cable 24 under the transmission action of the connecting piece 32 and the moving seat 23. This causes the guide cable 24 to be pushed by the thrust, which in turn causes the value of the first pressure sensor 44 to exceed the threshold. At this time, under the control of the pre-set program, the winding motor 42 reverses, thereby loosening the wound guide cable 24 to maintain the pressure of the guide cable 24 close to the threshold, so as to maintain the normal movement of the moving seat 23 and other structures. By controlling the tension of the guide cable 24, the opening and closing of the winding motor 42 can be made more intelligent. On the one hand, it effectively avoids the problem of the guide cable 24 breaking. On the other hand, it can maintain the normal operation of the moving seat 23 and other structures, so that the flame heating straightening process can be carried out.

[0051] In a preferred embodiment of the present invention, a symmetrically designed push-pull plate 5 is installed on the movable seat 23. The push-pull plate 5 is made of a spring telescopic plate and is generally L-shaped. The push-pull plate extends into the interior of the movable seat 23 and is slidably connected to the movable seat 23. A symmetrically designed connecting wheel 51 is rotatably installed at the end of the push-pull plate 5 away from the movable seat 23. The fixed seat 2 is generally a C-shaped structure. The push-pull plate 5, the fixed seat 2 and the connecting piece 32 cooperate to perform multi-point correction of the steel structure frame.

[0052] The push-pull plate 5 has a groove 52, and a slide bar 53 is slidably installed in the groove 52. One of the connecting wheels 51 is rotatably installed on the slide bar 53. A fastening bolt 55 is threaded on the push-pull plate 5 and extends into the groove 52.

[0053] The fixing base 2 consists of a base plate 21 and a mounting rod 22. The mounting rod 22 is a rod-shaped structure with adjustable length. The base plate 21 and the mounting rod 22 form a C-shaped structure. A reference rod 56 is fixedly installed in the middle of the fixing base 2. In the initial state, the reference rod 56 provides a reference for the initial length of the connector 32 and the push-pull plate 5. It should be noted that the mounting rod 22 is installed at both ends of the base plate 21, and the end of the mounting rod 21 near the base plate 21 is L-shaped. The mounting rod 21 extends and slides inside the base plate 21 to facilitate the connection of the fixing base 2 with the steel structure component.

[0054] During the installation process, the workers first selected undeformed points on the steel structure components. Then, when installing the fixing base 2, they used these undeformed points as a basis to install the mounting rod 22 on the steel structure components. Simultaneously, they adjusted the length of the mounting rod 22 so that the reference rod 56 on the base plate 21 was aligned with the undeformed point. After the fixing base 2 was installed, the workers manually pulled the push-pull plate 5 and secured the connecting wheel 51 at the end of the push-pull plate 5 to both sides of the steel structure components. During installation, the workers manually rotated the fastening bolts 55 according to the thickness of the steel structure components, causing the slider 53 to lose its restraint, and then pushed the slider 53 to move. Then, the gap between the two connecting wheels 51 is adjusted, and the connecting wheels 51 are engaged on both sides of the steel structure component. It should be noted that in this invention, the connecting wheel 51 is a circular structure with a surface made of elastic high-temperature resistant material. Therefore, the connecting wheel 51 also has a certain deformation capacity. Subsequently, under the action of the winding motor 42, the guide cable 24 is taut. At this time, the fixing seat 2, the connecting piece 32, and the push-pull plate 5 act on the front and back sides of the steel structure component, respectively. When the guide cable 24 is taut, the guide cable 24 and the fixing seat 2 form a reference plane, and this reference plane remains parallel to the undeformed area of ​​the steel structure component. The distance from the reference rod 56 is controlled by the length of the push-pull plate 5. Simultaneously, when the push-pull plate 5 and connecting piece 32 are not subjected to external force, their vertical distances to the undeformed area of ​​the steel structure component are the same. During the movement of the movable seat 23, as the distance between the steel structure component and the reference surface increases, the push-pull plate 5 is stretched. The greater the distance, the greater the stretching of the push-pull plate 5. Under the self-restoring deformation of the push-pull plate 5, a tensile force is generated on the steel structure component, causing the steel structure component to be parallel to the reference surface. When the distance between the steel structure component and the reference surface is less than the length of the reference rod 56, the push-pull plate 5 and connecting piece 32 are compressed, and under the reaction force... Under the action of the push-pull plate 5 and the connector 32, the steel structure component is pushed to deform away from the reference plane. Therefore, during the linear heating of the steel structure component, an external force is always applied to the deformation area of ​​the steel structure component. With the help of heating and correction, the correction rate of the steel structure component is accelerated. It should be noted that since the guide cable 24 can provide a support force to the moving seat 23 at a preset threshold, the upper limit of the mechanical force generated by the push-pull plate 5 and the connector 32 on the steel structure component is determined. By adjusting the preset threshold, the problem of indentation and scratches on the steel structure component under the action of external force can be effectively reduced.

[0055] In a preferred embodiment of the present invention, a second pressure sensor 57 is fixedly installed inside both the push-pull plate 5 and the connector 32. The second pressure sensor 57 is used to detect the magnitude of the spring force inside the push-pull plate 5 and the connector 32.

[0056] The second pressure sensor 57 is used to measure the spring force inside the push-pull plate 5 and the connector 32. During installation, one end of the spring inside the push-pull plate 5 or the connector 32 is fixed to the protruding end of the push-pull plate 5 or the connector 32, and the other end is fixed to the second pressure sensor 57. The second pressure sensor 57 is fixed to the fixed end of the push-pull plate 5 or the connector 32, thereby measuring the extension and contraction of the push-pull plate 5 and the connector 32. When the value of the second pressure sensor 57 inside the push-pull plate 5 and the connector 32 does not change at all during multiple linear heating processes, it indicates that the surface of the steel structure component is parallel to the reference surface and the spacing is the same as the length of the reference rod 56. Therefore, the surface straightening process is completed.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding deformation correction device for steel structure components, comprising a flame gun (1), wherein the flame gun (1) is connected to an external gas supply device via a pipeline; Its features are: It also includes an automatic guidance assembly, on which the flame gun (1) is mounted, and the automatic guidance assembly is used to guide the movement trajectory of the flame gun (1); The automatic guidance assembly includes a fixed base (2), a movable base (23), a guide cable (24), and a lifting base (27). The fixed seat (2) is detachably fixedly installed on the steel structure component. The fixed seat (2) is designed in parallel and symmetrical manner. The fixed seat (2) is a C-shaped structure. The movable seat (23) is located between the two fixed seats (2). The two fixed seats (2) are equipped with guide cables (24), and the movable seat (23) has a through hole (25). The guide cables (24) extend into the through hole (25), and the flame gun (1) is detachably fixed on the movable seat (23). The movable seat (23) is provided with a lifting groove (26), and a lifting seat (27) is slidably installed on the movable seat (23). The lifting seat (27) extends into the lifting groove (26), and a reciprocating screw (28) is rotatably installed in the lifting groove (26). A nut is embedded in the lifting seat (27), and the reciprocating screw (28) and the nut form a screw drive pair. A drive motor (29) is fixedly installed on the movable seat (23). The output end of the drive motor (29) is fixedly connected to the reciprocating screw (28). A transmission wheel set (2A) is installed on the reciprocating screw (28). The transmission wheel set (2A) extends into the through hole (25), and the transmission wheel set (2A) is frictionally driven with the guide cable (24). The lifting seat (27) has a T-shaped design. An adjustment groove (3) is provided at the end of the lifting seat (27) away from the moving seat (23). An adjustment screw (31) is rotatably installed in the adjustment groove (3). A symmetrically designed connector (32) is slidably installed in the adjustment groove (3). The flame gun (1) is installed on the connector (32). The adjustment screw (31) has a left-hand thread and a right-hand thread at both ends. The adjustment screw (31) and the connector (32) form a helical transmission pair. The connectors (32) are all made of spring telescopic rods. The end of the connector (32) away from the lifting seat (27) is designed in an arc shape. The flame gun (1) is installed at the extended end of the connector (32). The movable seat (23) is equipped with a symmetrically designed push-pull plate (5), which is made of a spring telescopic plate. The push-pull plate (5) is rotatably mounted with a symmetrically designed connecting wheel (51) at the end away from the movable seat (23). The fixed seat (2) is a C-shaped structure. The push-pull plate (5), the fixed seat (2), and the connecting piece (32) cooperate to perform multi-point correction on the steel structure frame.

2. The steel structure component welding deformation correction device according to claim 1, characterized in that: One of the fixed seats (2) has a winding groove (4) and a winding shaft (41) is rotatably installed in the winding groove (4). The guide cable (24) is wound on the winding shaft (41) and a winding motor (42) is fixedly installed on the winding shaft (41). The output end of the winding motor (42) is fixedly connected to the winding shaft (41).

3. The steel structure component welding deformation correction device according to claim 2, characterized in that: An elastic pad (43) is fixedly installed inside the winding groove (4). A first pressure sensor (44) is installed on the elastic pad (43). The guide cable (24) passes through the surface of the first pressure sensor (44). The first pressure sensor (44) is electrically connected to the winding motor (42). The first pressure sensor (44) is used to control the forward and reverse rotation of the winding motor (42).

4. The steel structure component welding deformation correction device according to claim 3, characterized in that: The push-pull plate (5) has a groove (52) and a slide bar (53) is slidably installed in the groove (52). One of the connecting wheels (51) is rotatably installed on the slide bar (53). A fastening bolt (55) is threaded on the push-pull plate (5) and extends into the groove (52).

5. The steel structure component welding deformation correction device according to claim 4, characterized in that: The fixing seat (2) consists of a base plate (21) and a mounting rod (22). The mounting rod (22) is a rod-shaped structure with adjustable length. The mounting rod (22) is used to connect with the steel structure component. A reference rod (56) is fixedly installed in the middle of the fixing seat (2). In the initial state, the reference rod (56) provides a reference for the initial length of the connector (32) and the push-pull plate (5).

6. The steel structure component welding deformation correction device according to claim 5, characterized in that: The push-pull plate (5) and the connector (32) are both fixedly installed with a second pressure sensor (57). The second pressure sensor (57) is used to detect the magnitude of the spring force inside the push-pull plate (5) and the connector (32).

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